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Serological responses to Ascaris suum adult worm antigens in Iberian finisher pigs
- E. Frontera, F. Serrano, D. Reina, M. Alcaide, J. Sánchez-López, I. Navarrete
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- Journal:
- Journal of Helminthology / Volume 77 / Issue 2 / June 2003
- Published online by Cambridge University Press:
- 12 April 2024, pp. 167-172
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Adult Ascaris suum were dissected to obtain different worm components (body wall, body fluid, ovaries, uterus and oesophagus) which were used as antigens when testing 95 sera of naturally A. suum-infected Iberian pigs by enzyme-linked immunosorbent assay (ELISA) and Western blot (WB). Pigs with patent Ascaris infections had significantly lower ELISA optical density values than pigs without adult worms when using the body fluid and the body wall as antigens. A poor negative correlation was found between adult intestinal worm burden or eggs in faeces and specific antibody responses, measured by ELISA and WB using all antigens. By WB, the recognition of specific bands was variable, but three groups of bands with molecular weights of 97 kDa, 54–58 kDa and 42–44 kDa were generally recognized by sera from naturally infected pigs as well as from hyperimmunized pigs when using the five antigen extracts. The ELISA and WB techniques may be used for immunodiagnosis, using somatic adult worm antigens, to declare young pigs to be Ascaris-free but cannot be used for individual Ascaris-diagnosis in adult Iberian pigs.
Experimental Clay-Mineral Formation from a Subvolcanic Rock by Interaction with 1 M NaOH Solution at Room Temperature
- A. Drief, F. Nieto, A. Sanchez-Navas
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- Clays and Clay Minerals / Volume 49 / Issue 1 / February 2001
- Published online by Cambridge University Press:
- 28 February 2024, pp. 92-106
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The alteration process of a subvolcanic rock with calcic plagioclase, pyroxene, and olivine as major components was investigated by X-ray diffraction (XRD) and analytical and transmission electron microscopy (TEM/AEM). Experimental interaction with 1 M NaOH solution led to the formation of dioctahedral beidellite to Fe-rich montmorillonite after 1 and 3 d of reaction. This range of smectite composition is similar to that from natural subvolcanic-derived soil formed from the same parent material. After 14 d of reaction, a berthierine-smectite (B-S) interstratified clay had partially replaced the smectite. Although, the presence of smectite interlayers prevented analysis of pure berthierine, berthierine-rich BS interstratifications have a composition similar to pure berthierine. After 40 d, the alteration process led to a 7-Å S interstratification whose composition falls between greenalite and lizardite. A series of amorphous materials were also found in the 14 and 40-d experiments. The most abundant of these is a Si-CaFe-rich material, whose chemical composition approaches that of the starting rock. In contrast, two other amorphous materials had a smectitic composition.
Interaction of Trialkyl Phosphites with Montmorillonites
- G. Dios Cancela, E. Romero Taboada, F. J. Huertas, A. Hernández Laguna, F. Sánchez Rasero
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- Clays and Clay Minerals / Volume 44 / Issue 2 / April 1996
- Published online by Cambridge University Press:
- 28 February 2024, pp. 170-180
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Complexes formed between montmorillonite, saturated in Li+, Na+, Mg2+, Ca2+, Co2+, Fe3+, Cu2+ and Zn2+, and trimethyl phosphites (TMP) and triethyl phosphites (TEP) were studied. In all of the cases, phosphites penetrate into the interlayer space of the montmorillonite and produce solvates whose basal spacing varies depending on the characteristics of the exchangeable cation. All the complexes with low basal spacing (Li+, Na+, Mg2+, Co2+ and Zn2+) are stable in vacuum, whereas those with high basal spacing, formed by the Ca2+ sample with TMP, and Ca2+ and Fe3+ samples with TEP are transformed into low basal spacing complexes in vacuum. The complexes with high basal spacing (Cu2+ sample with TMP and TEP) are stable in vacuum.
The TMP and TEP complexes stable in vacuum with low spacing are thermally destroyed in one or two stages with two loss maxima, as a result of partial burning of phosphite molecules. Those with high spacing (Cu2+) are destroyed in two stages; the first is probably the result of the transformation process from high to low spacing, as a consequence of the structural reorganization of the molecules which remain in the interlayer space, and the second, could be associated with the destruction of low spacing complexes.
The IR spectra show that the molecule and the cation are linked by the P of the phosphite, which produces a reinforcement of the other bonds in the molecule, caused by an inductive effect. The phosphite intercalation is accompanied by a partial isomerization of phosphite to phosphonate.
The heat of adsorption of phosphites shows that the molecule-cation bond is ion-dipole. In the Cu sample with trimethyl phosphite, this bond seems to be reinforced by retrodonation of electrons from copper to ligand. Finally, the possible disposition of phosphite molecules in the interlayer space is considered. For this purpose, ab initio calculations have been performed on the different conformers of the TMP molecule at 6–31G* and 6–31+G* basis sets.
Iron Removal from Kaolin Waste Dumps by Chemical (Oxalic and Citric Acids) and Biological (Bacillus Strain) Leaching
- Yolanda Sánchez-Palencia, David Bolonio, Marcelo F. Ortega, María-Jesús García-Martínez, José Eugenio Ortiz, Fernando Rayo, Lucía Arregui, Susana Serrano, Juan F. Llamas, Laureano Canoira
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- Journal:
- Clays and Clay Minerals / Volume 70 / Issue 3 / June 2022
- Published online by Cambridge University Press:
- 01 January 2024, pp. 386-404
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Kaolin waste dumps contain a huge volume of material that cannot be commercialized due to the presence of variable amounts of iron minerals, which impart a yellowish color to the kaolin. Elimination of iron from kaolin using either a chemical or a biological method was the aim of this study. The chemical leaching of iron from kaolin was carried out using response surface methodology to optimize the reaction conditions. Time was found to be the most influential variable, although oxalic acid must be present to leach 32% of the iron. Biological leaching was also assayed for 14 days using a Bacillus strain. The results of bacterial leaching of iron from kaolin showed <1% iron elimination.
Transmission Electron Microscopy Evidence for Experimental Illitization of Smectite in K-Enriched Seawater Solution at 50°C and Basic pH
- A. Drief, F. Martinez-Ruiz, F. Nieto, N. Velilla Sanchez
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- Clays and Clay Minerals / Volume 50 / Issue 6 / December 2002
- Published online by Cambridge University Press:
- 01 January 2024, pp. 746-756
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Experimental illitization of smectite was studied by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Experiments were performed on the <2 µm fraction consisting entirely of smectite separated from a soil formed on subvolcanic rock located in the External Zone of the Betic Cordilleras (southern Spain). Amounts of 0.25 g were added to different solutions: seawater, and three K-enriched seawater solutions prepared by adding KOH to seawater whose final [K] values were 0.1, 0.5 and 1 M, respectively. The experiments were performed at 50°C over a period of 30 days. The XRD patterns showed no mineralogical changes in residues from seawater or from the 0.1 M [K] solution. With increasing pH and K molarity, the smectite peak, initially at 1.4 nm, became broader. This change in the smectite peak was more significant in the residue from the 1 M [K] solution. The appearance of a small shoulder at 1.0 nm in the residue from a 0.5 M [K] solution showed the beginning of illite formation. However, its appearance was clearer in XRD patterns of the residue corresponding to the 1 M [K] solution. The XRD data from air-dried, glycolated, and heated samples from the 1 M [K] solution indicated the presence of smectite, disordered interstratified illite-smectite (I-S) and illite.
The TEM/AEM studies were performed on the residue corresponding to the 1 M [K] experiment. The HRTEM images revealed that smectite and illite occurred as separated packets with a ferroan lizardite, as a by-product of the smectite-to-illite reaction, interstratified and intergrown with illite. Smectite occurs both as ‘rims’ on the illite packet and in its core. The presence of smectite in the core of illite packet indicates that the lateral transition from smectite to illite was incomplete, taking place by direct replacement of smectite layers as a whole through a dissolution-precipitation mechanism. The experimental study shows that smectite may transform in a wide range of geological and artificial environments involving high-pH K-rich solutions.
Association of hippocampal subfield volumes with prevalence, course and incidence of depressive symptoms: The Maastricht Study
- Jennifer Monereo-Sánchez, Jacobus F. A. Jansen, Martin P. J. van Boxtel, Walter H. Backes, Sebastian Köhler, Coen D. A. Stehouwer, David E. J. Linden, Miranda T. Schram
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- Journal:
- The British Journal of Psychiatry / Volume 224 / Issue 2 / February 2024
- Published online by Cambridge University Press:
- 23 November 2023, pp. 66-73
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- February 2024
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Background
Late-life depression has been associated with volume changes of the hippocampus. However, little is known about its association with specific hippocampal subfields over time.
AimsWe investigated whether hippocampal subfield volumes were associated with prevalence, course and incidence of depressive symptoms.
MethodWe extracted 12 hippocampal subfield volumes per hemisphere with FreeSurfer v6.0 using T1-weighted and fluid-attenuated inversion recovery 3T magnetic resonance images. Depressive symptoms were assessed at baseline and annually over 7 years of follow-up (9-item Patient Health Questionnaire). We used negative binominal, logistic, and Cox regression analyses, corrected for multiple comparisons, and adjusted for demographic, cardiovascular and lifestyle factors.
ResultsA total of n = 4174 participants were included (mean age 60.0 years, s.d. = 8.6, 51.8% female). Larger right hippocampal fissure volume was associated with prevalent depressive symptoms (odds ratio (OR) = 1.26, 95% CI 1.08–1.48). Larger bilateral hippocampal fissure (OR = 1.37–1.40, 95% CI 1.14–1.71), larger right molecular layer (OR = 1.51, 95% CI 1.14–2.00) and smaller right cornu ammonis (CA)3 volumes (OR = 0.61, 95% CI 0.48–0.79) were associated with prevalent depressive symptoms with a chronic course. No associations of hippocampal subfield volumes with incident depressive symptoms were found. Yet, lower left hippocampal amygdala transition area (HATA) volume was associated with incident depressive symptoms with chronic course (hazard ratio = 0.70, 95% CI 0.55–0.89).
ConclusionsDifferences in hippocampal fissure, molecular layer and CA volumes might co-occur or follow the onset of depressive symptoms, in particular with a chronic course. Smaller HATA was associated with an increased risk of incident (chronic) depression. Our results could capture a biological foundation for the development of chronic depressive symptoms, and stresses the need to discriminate subtypes of depression to unravel its biological underpinnings.
Using rational surfaces to improve pellet fuelling in stellarators
- N. Panadero, K. J. McCarthy, B. Pégourié, R. Carrasco, I. García-Cortés, R. García, J. Hernández-Sánchez, F. Köchl, J. Martínez-Fernández, R. Sakamoto, the TJ-II team
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- Journal:
- Journal of Plasma Physics / Volume 89 / Issue 6 / December 2023
- Published online by Cambridge University Press:
- 16 November 2023, 955890601
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Pellet injection is currently the primary candidate for achieving efficient plasma fuelling, one of the key issues for steady-state operation in large fusion devices. In this paper, pellet injection experiments are performed for several magnetic configurations of the TJ-II stellarator. The aim of this study is to increase the understanding of the role played by rational surfaces in plasmoid drift and deposition profiles in stellarators. The analysis of experimentally observed plasmoid drifts is supported by simulations of such cases made with the HPI2 code. Plasmoid drift is found to be significantly reduced, as in tokamaks, in the vicinity of rational surfaces. This is attributed to the fact that plasmoid external charge reconnection lengths are shorter near rational surfaces, resulting in a more effective damping of the plasmoid drift. Although the effect of plasmoid external currents on the drift is expected to be negligible in stellarators, compared with those caused by plasmoid internal currents, the effect observed in TJ-II is clearly measurable. In addition, simulations show that enhanced drift reductions near rational surfaces lead to significantly different deposition profiles for the magnetic configurations included in this study. This implies that it should be possible to select the magnetic configurations to obtain more efficient pellet fuelling.
Screening and early therapeutic intervention of bonding disorders at first six months of life: An alternative to prevent disorganised attachment and severe mental disorder
- G. Hernández-Santillán, M. Alcamí-Pertejo, B. Palacios-Hernández, G. Lahera-Forteza, A. Fernández-Sánchez, M. F. Bravo-Ortiz
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, p. S101
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Introduction
Disorganized attachment has been described as an important risk factor for developing serious mental disorders in childhood, adolescence and adulthood, such as borderline personality disorder, psychoses, afective disorders, and a higher suicide risk, for instance. Bonding disorders (BD) in parents are related to insecure and disorganized attachment in children. BD can be early diagnosed at 4 to 6 weeks after birth.
ObjectivesDetermine if there is a significant difference between the results of the prevalence of affective disorders, disorganized attachment, and suicidal risk five years after the birth of the offspring of parents with and without attachment disorders detected in the first year postpartum during the covid-19 pandemic.
MethodsDescribe a pilot project of an analytical prospective study following a cohort of parents from the cohort SAMPECO/PEMHSCO (Perinatal Mental Health in Spain during the Covid-19 pandemic). The cohort is planned to be divided into two groups: with bonding disorders an without bonding disorders, which was established using the Postpartum Bonding Questionnaire (Brockington, 2006). Follow the offspring of both groups for 5 years and compare the results of disorganized attachment, affective disorders and suicide risk.
ResultsThe cohort SAMPECO/PEMHSCO was recruited between March 2021 and June 2022. There was measured postpartum depression in mothers and fathers using the EPDS and bonding disorders in parents using the PBQ validated to the Spaniard population. More than 1500 families were involved at the beginning and around 450 families finished the follow-up six months after birth. Around 500 families were lost because of non-right contact information.
ConclusionsThe covid-19 pandemic has seriously affected the mental health of the general population. Consequently, there is a higher demand for mental health assistance by public and private sanity sectors. Currently, the youth population is suffering very much from the consequences of isolation and other social factors, and many families who had babies in this period haven’t had enough support to breed and look after both their babies and themselves. Some papers suggest that the prevalence of perinatal mental disorders in parents has increased since the covid-19 pandemic because of several factors. Paradoxically, despite the high preventive potential of early intervention in the perinatal period, there are not yet exist well-equipped perinatal mental health units to solve this problem. It is urgent to boost the development of Perinatal Mental Health Services to prevent a major worsening of the situation and to prevent the increasing rate of severe mental disorders in children, adolescents and adults.
Disclosure of InterestNone Declared
Smoking treatments for patients with mental illness: case presentation and a brief literature review
- F. Garcia Sanchez, M. Gutierrez Rodriguez, C. Moreno Menguiano, M. A. Corral Alonso, J. J. Vazquez Vazquez, S. M. Bañon Gonzalez, V. Voces Domingo, J. A. Casado de la Hera
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- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, p. S756
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Introduction
Smoking prevalence in patients with mental illness ranges between two to 4 times higher than general population. This higher prevalence has a multifactorial origin, and some of the possible causes are still unknown.
They have a higher prevalence of tobacco-associated diseases and higher mortality.
Additionally, these patients have greater difficulty in treating and quitting smoking.
A relationship has been found between severity of mental illness and smoking. Risk of suicide seems to be higher in patients with higher tobacco consumption. Schizophrenia is the mental illness that has been most closely related to smoking, with a prevalence close to 90%.
ObjectivesThe aim of this work is reviewing the current bibliography referring to smoking treatments for patients with mental illness
MethodsA literature search using electronic manuscripts available in PubMed database published during the last ten years and further description and discussion of a single-patient clinical case
ResultsThe treatment of tobacco dependence in patients with mental illnesses is sometimes waited until there is psychiatric stability, which can take a long time in those cases with more severe mental disorders, which can have negative physical and psychiatric consequences.
The combined treatment of cognitive behavioral therapy and pharmacological treatment is the most effective approach. Nicotine replacement therapy can be useful, while combined use of antidepressants or anxiolytics is also recommended.
Bupropion has shown efficacy. In patients with schizophrenia it does not seem to worsen positive symptomatology, but improving the negative one. It should not be used in patients with bipolar disorder or bulimia.
Varenicline has shown efficacy in the general population, but limitations were established in patients with mental illness, although it is the drug that has shown greater efficacy. However, is not currently available in our country.
Cytisine is a drug with limited number of studies in the psychiatric population but it may be a reasonable treatment alternative.
ConclusionsThe prevalence of tobacco use in patients with mental illness is higher than the general population, especially in paranoid schizophrenia. The consequences on physical health and the evolution of psychiatric illness are very relevant. Based on above, a multidisciplinary and coordinated management involving psychiatrists and other specialists in the treatment of these patients should be desirable.
Disclosure of InterestNone Declared
Efficacy of paliperidone palmitate 3-month formulation in preventing hospital admissions and emergency room visits. 66 months of follow-up
- S. L. Romero Guillena, B. O. Plasencia Garcia de Diego, J. Gomez Gonzalez, F. Gotor Sánchez-Luengo
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- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, p. S487
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Introduction
Paliperidone Palmitate 3-month formulation (PP3M) has shown a significantly longer time to relapse compared to placebo, with similar efficacy and safety to Paliperidone Palmitate 1-month (PP1M) (Carpiniello et al. Drug Des. Devel. Ther. 2016; 10 1731–1742).
ObjectivesThe main objective of this study was to determine the effectiveness of PP3M in preventing hospital admissions and emergency room visits, in people with non-acute schizophrenia in a naturalistic psychiatric outpatient setting
MethodsSample: 30 people with diagnosis of schizophrenia (DSM 5 criteria), who had started treatment with PP3M, after being stabilized with PP1M (the dose was not modified in the four months prior to inclusion in the study)
Quarterly basis, the following evaluations were performed during a follow-up period of 66 months:
The Clinical Global Impression-Schizophrenia scale (CGI-SCH)
Treatment adherence, concomitant medication and the number of hospitalizations and emergency visits
Efficacy values: Percentage of patients who remained free of admissions at the end of 66 months of follow-up.
Other evaluation criteria: Percentage of patients who never visited the emergency department at the end of 66 months of follow-up. Average change from baseline visit to the final evaluation as assessed by score obtained on the following scale: GSI-SCH, percentage of patients on antipsychotic monotherapy and treatment adherence rate.
ResultsThe mean dose of PP3M was 401. 55 mg
The percentage of patients who remained free of admissions at the end of the 66 months was 83.25% and the percentage of patients who never visited the emergency department at the end of 66 months was 79.92%
Mean variations from baseline scores at 66 months were: (-0.36 ±0-37) on the GCI-SCH.
The percentage of patients on antipsychotic monotherapy at the end of the 66 months was 76.56%
The rate of adherence was 86.58%
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ConclusionsIn our study, we found that paliperidone palmitate 3-month formulation was effective in reducing the number of admissions and visits to the emergency department, under conditions of daily clinical practice.
Disclosure of InterestNone Declared
Long-term care utilization within older adults with schizophrenia: Associated factors in a multicenter study
- L. Pierre, M. Kibby, M. Sanchez Rico, C. Hanon, J. Alvarado, R. Pascal de Raykeer, F. Limosin, N. Hoertel
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, pp. S935-S936
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Introduction
Data are scarce regarding the clinical factors associated with utilization of long-term care facilities among older adults with schizophrenia.
ObjectivesIn this multicenter study, we sought to examine potential clinical differences between older adults with schizophrenia who are living in a long-term care facility and their community-dwelling counterparts.
MethodsWe used data from the French Cohort of individuals with Schizophrenia Aged 55-years or more (CSA) study, a large multicenter sample of older adults with schizophrenia (N = 353).
We used data from the French Cohort of individuals with Schizophrenia Aged 55-years or more (CSA)study, a large multicenter sample of older adults with schizophrenia (N = 353).
ResultsResults from the multivariable binary logistic regression analysis including all variables that had a significant association in univariate analyses (i.e., p < 0.05) revealed that older age (Adjusted odds ratio (AOR) [95%CI]=1.08 [1.03–1.13]), depression (AOR [95%CI]=1.97 [1.06–3.64]), lower MMSE (AOR [95%CI]=0.94 [0.88–0.99]) and GAF scores (AOR [95%CI]=0.97 [0.95–0.99]), living in an area comprising more than 1000 inhabitants per km2 (AOR [95%CI]=2.81 [1.37–5.80]), having consulted a general practitioner in the past year (AOR [95%CI]=0.28 [0.0.14–0.56]), and a greater lifetime number of hospitalizations in a psychiatric department (AOR [95%CI]=2.30 [1.18–4.50]) were significantly and independently associated with long-term care utilization among older adults with schizophrenia . In the multivariable logistic regression model, the variance inflation factor (VIF) and tolerance values of each predictor variable were respectively lower than 2.5 and higher than 0.2, supporting that multicollinearity was not a concern in our analysis.
ConclusionsIn a multicenter sample of 353 older adults with schizophrenia, we found that ong-term care utilization was significantly and independently associated with depression, lower cognitive and global functioning, greater lifetime number of hospitalizations in a psychiatric department, not having consulted a general practitioner in the past year, urbanicity and older age. Patients living in a long-term care facility appear to belong to a distinct group, marked by a more severe course of illness with higher level of depression and more severe cognitive deficits.
Despite its limitations, this study contributes to gain more specific knowledge about this specific understudied population. Our study highlights the need of early assessment and management of depression and cognitive deficits in this population and the importance of monitoring closely this vulnerable population.
Disclosure of InterestNone Declared
Antiviral and Anti-Inflammatory Activities of Fluoxetine in a SARS-CoV-2 Infection Mouse Model
- D. Péricat, S. A. Leon-Icaza, M. Sánchez-Rico, C. Mühle, I. Zoicas, F. Schumacher, R. Planès, R. Mazars, G. Gros, A. Carpinteiro, K. A. Becker, J. Izopet, N. Strub-Wourgaft, P. Sjö, O. Neyrolles, B. Kleuser, F. Limosin, E. Gulbins, J. Kornhuber, E. Meunier, N. Hoertel, C. Cougoule
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- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, pp. S119-S120
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Introduction
The coronavirus disease 2019 (COVID-19) pandemic continues to cause significant morbidity and mortality worldwide. Since a large portion of the world’s population is currently unvaccinated or incompletely vaccinated and has limited access to approved treatments against COVID-19, there is an urgent need to continue research on treatment options, especially those at low cost and which are immediately available to patients, particularly in low- and middle-income countries. Prior in vitro and observational studies have shown that fluoxetine, possibly through its inhibitory effect on the acid sphingomyelinase/ceramide system, could be a promising antiviral and anti-inflammatory treatment against COVID-19.
ObjectivesThe aim of this sudy was to test the potential antiviral and anti-inflammatory activities of fluoxetine against SARS-CoV-2 in a K18-hACE2 mouse model of infection, and against several variants of concern in vitro, and test the hypothesis of the implication of ceramides and/or their derivatives hexosylceramides.
MethodsWe evaluated the potential antiviral and anti-inflammatory activities of fluoxetine in a K18-hACE2 mouse model of SARS-CoV-2 infection, and against variants of concern in vitro, i.e., SARS-CoV-2 ancestral strain, Alpha B.1.1.7, Gamma P1, Delta B1.617 and Omicron BA.5.
ResultsFluoxetine, administrated after SARS-CoV-2 infection, significantly reduced lung tissue viral titres (Figure 1) and expression of several inflammatory markers (i.e., IL-6, TNFα, CCL2 and CXCL10) (Figure 2). It also inhibited the replication of all variants of concern in vitro. A modulation of the ceramide system in the lung tissues, as reflected by the increase in the ratio HexCer 16:0/Cer 16:0 in fluoxetine-treated mice, may contribute to explain these effects (Figure 3).
Image:
Image 2:
Image 3:
ConclusionsOur findings demonstrate the antiviral and anti-inflammatory properties of fluoxetine in a K18-hACE2 mouse model of SARS-CoV-2 infection, and its in vitro antiviral activity against variants of concern, establishing fluoxetine as a very promising candidate for the prevention and treatment of SARS-CoV-2 infection and disease pathogenesis.
Disclosure of InterestNone Declared
Mindfulness, Attention, and Impulsivity in Bipolar Disorder
- N. E. Fares-Otero, B. Solé, S. Martin-Parra, F. Piazza, J. Sanchez-Moreno, E. Vieta, A. Martinez-Aran
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- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, pp. S84-S85
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Introduction
Bipolar disorder (BD) is a chronic mental disorder characterized by mood instability1. BD is further related to neurocognitive and functional disruptions that remain remarkably stable even when patients are euthymic, leading to poor well-being and quality of life. Mindfulness means paying attention on purpose, in the present moment, and involves different facets such as observing, describing, acting with awareness, non-judging and non-reacting of inner experience. It remains unclear whether mindfulness and its specific facets are differentially associated with different aspects of attention and trait impulsivity in individuals with BD.
ObjectivesTo examine associations between different mindfulness facets, and different aspects of attention and trait impulsivity in BD.
MethodsThis study was approved by the Hospital Clínic Ethics and Research Board (HCB/2017/0432). After informed consent, 94 outpatients, M age = 45.57, SD = 9.8, range 19-61 years, 41.5% Male, 63.8% BD-I according to DSM-5 criteria, in partial or total remission based on Young Mania Rating Scale (YMRS; M = 1.81, SD = 2.11) and Hamilton Depression Rating Scale (HDRS; M = 5.46, SD = 3.71) were enrolled in this study. Participants were evaluated using the Five Facet Mindfulness Questionnaire (FFMQ) to assess Mindfulness, the Trail Making Test (TMT-A) and the Conner’s Continuous Performance test (CPT-II) to assess Attention, and the Barratt Impulsiveness Scale (BIS-11) to assess Impulsivity. Pearson correlations were performed, and statistical significance was evaluated two-sided at the 5% threshold.
ResultsMindfulness-Describing was negatively associated with Cognitive and Non-Planning Impulsivity (r = -.43 and -.28, p < .001), Mindfulness-Acting with Awareness was negatively associated with Cognitive, Motor and Non-Planning Impulsivity (r = -.27 to -.45, p < .001), Mindfulness Non-Judging (r = -.33 and -.34, p < .001) and Non-Reacting (r = -.30 and -.46, p < .001) of inner experience were negatively associated with Cognitive and Motor Impulsivity. No associations were found between neither Mindfulness nor Impulsivity with any aspects of Attention.
ConclusionsPreliminary findings suggest that better performance in specific facets of mindfulness (describing, acting with awareness, non-judging or reacting of inner experience) may be related to a decrease in different aspects of trait impulsivity. Further longitudinal and interventional research is needed on underlying mechanisms. Nonetheless, our study suggests the need for including mindfulness-based approaches to improve behavioral and functional outcomes for those with BD.
FundingThis work was supported by the European Union Horizon 2020 research and innovation program (EU.3.1.3. Treating and managing disease: Grant 945151), CIBERSAM, FIS PI17/00941 ISCIII, European Regional Development Fund.
References1. Carvalho AF, Firth J, Vieta E. Bipolar Disorder. N Engl J Med. 2020;383(1):58-66. doi:10.1056/NEJMra1906193
Disclosure of InterestNone Declared
Resistant depression. Clinical manifestations and diagnosis. Purposely a case
- S. M. Bañón González, N. Ogando Portilla, O. Sobrino cabra, B. Gamo Bravo, F. García Sánchez
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- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, p. S844
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Introduction
The term “depression” can be used in different senses: it can be a syndrome, a mood state, a mental disorder, and all of them are distinct clinical conditions…There are no pathognomonic features of bipolar/unipolar depression. A good medical history is the most important component of the evaluation. We have to use clinical variables and differential epidemiology for a correct diagnosis.
ObjectivesThey both analyze clinical, psychopathological and epidemiological characteristics of resistant depression and they review causes, incidence, prevalence, diagnostic, therapeutic tools and the importance of maintaining the treatment, because the abandonment of the treatment is a good predictor of possible relapses.
MethodsA literature Review of the last five years concerning resistant depression has been done: prevalence, incidence, pathogenesis and its relationship with other psychiatric disorders encoded in DSM-V.
ResultsUnipolar major depression (major depressive disorder) is characterized by a history of one or more major depressive episodes and no previous history of mania or hypomania symptoms. A major depressive episode is presented with five or more of the following nine symptoms for at least two consecutive weeks; at least one of them must be either a depressed mood or a loss of interest or pleasure. In addition, the symptoms must cause significant distress or psychosocial impairment, and not be a direct result of a substance or general medical condition.
ConclusionsSymptoms of unipolar depression in adults can overlap with symptoms of other psychiatric and general medical disorders. Unipolar depression needs to be distinguished from these other disorders to prevent inappropriate treatment.
Disclosure of InterestNone Declared
Sociodemographic and clinical characteristics of the population with a first psychotic episode attended in the mental health services of area 5 of Madrid (Spain)
- J. Garde González, P. Herrero Ortega, A. Oliva Lozano, I. I. Louzao Rojas, M. P. Vidal-Villegas, A. Muñoz-Sanjosé, M. P. Sánchez-Castro, G. Lahera, S. Sánchez Quílez, M. F. Bravo-Ortiz, O. B. O. A.-M. Group
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, p. S443
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Introduction
Risk of functional impairment and progression to chronic illness in people with a first episode of psychosis (FEP) has motivated early intervention programs, showing promising results. Defining the characteristics of people with FEP at local level enables the clinicians to adjust interventional models to the reality of the population. The area 5 of Madrid (Spain) is referred to La Paz University Hospital and it serves a catchment area of roughly 527,000 people.
ObjectivesWe aim to identify sociodemographic and clinical characteristics of patients in the area 5 of Madrid (Spain) who meet the criteria of FEP.
MethodsA descriptive retrospective study including 179 people (age range 18-40 years) who were attended in mental health services of La Paz University Hospital (area 5 of Madrid, Spain), between January 2019 and May 2020, having suffered a psychotic episode in the last five years.
ResultsThe average age of people with FEP was 29.32 years, with a higher proportion of men (62%). The mean duration of untreated psychosis (DUP) was 3.64 months and 47% of patients consume cannabis. We found disparities in DUP among the different districts in the area and we also observed differences depending on the district for inclusion in rehabilitation programs or psychotherapy. The following averages were obtained for the aggregate sample: 1.01 hospitalization/year, 1.42 emergency room visits/year, 1.81 years of illness and a mean dosage equivalent to olanzapine 6.75 mg/day. The incidence of psychosis in our area has been 7.01 cases per 100000 inhabitants/year.
ConclusionsThe incidence of psychosis has been as expected according to data recorded at previous studies in Spain. The results obtained in our sample have included a lower DUP and a higher use of cannabis than those described in the literature. We have also found differences when observing the inclusion of patients in different treatments (psychotherapy, rehabilitation), which may be related to the differences in the DUP by districts. Further exploration in this field is needed to draw causal conclusions.
Disclosure of InterestNone Declared
Antidepressant Use and Its Association with 28-Day Mortality in Inpatients with SARS-CoV-2: Support for the FIASMA Model against COVID-19
- N. Hoertel, M. Sanchez-Rico, J. Kornhuber, E. Gulbins, A. Reiersen, E. Lenze, B. A. Fritz, F. Jalali, E. Mills, C. Cougoule, A. Carpinteiro, C. Mühle, K. A. Becker-Flegler, D. R. Boulware, C. Blanco, J. M. Alvarado, N. Strub-Wourgaft, C. Lemogne, F. Limosin
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, pp. S118-S119
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Introduction
To reduce Coronavirus Disease 2019 (COVID-19)-related mortality and morbidity, widely available oral COVID-19 treatments are urgently needed. Certain antidepressants, such as fluvoxamine or fluoxetine, may be beneficial against COVID-19.
ObjectivesThe main objective was two-fold: (i) to test the hypothesis that the prevalence of antidepressant use in patients hospitalized with COVID-19 would be lower than in patients with similar characteristics hospitalized without COVID-19, and (ii) to examine, among patients hospitalized with COVID-19, whether antidepressant use is associated with reduced 28-day mortality. Our secondary aim was to examine whether this potential association could only concern specific antidepressant classes or molecules, is dose-dependent, and/or only observed beyond a certain dose threshold.
MethodsWe included 388,945 adult inpatients who tested positive for SARS-CoV-2 at 36 AP–HP (Assistance Publique–Hôpitaux de Paris) hospitals from 2 May 2020 to 2 November 2021. We compared the prevalence of antidepressant use at admission in a 1:1 ratio matched analytic sample with and without COVID-19 (N = 82,586), and assessed its association with 28-day all-cause mortality in a 1:1 ratio matched analytic sample of COVID-19 inpatients with and without antidepressant use at admission (N = 1482) (Figure 1).
ResultsAntidepressant use was significantly less prevalent in inpatients with COVID-19 than in a matched control group of inpatients without COVID-19 (1.9% versus 4.8%; Odds Ratio (OR) = 0.38; 95%CI = 0.35–0.41, p < 0.001) (Figure 2). Antidepressant use was significantly associated with reduced 28-day mortality among COVID-19 inpatients (12.8% versus 21.2%; OR = 0.55; 95%CI = 0.41–0.72, p < 0.001), particularly at daily doses of at least 40 mg fluoxetine equivalents (Figure 3). Antidepressants with high FIASMA (Functional Inhibitors of Acid Sphingomyelinase) activity seem to drive both associations.
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ConclusionsAntidepressant use is associated with a reduced likelihood of hospitalization in patients infected with SARS-CoV-2 and with a reduced risk of death in patients hospitalized with COVID-19. These associations were stronger for molecules with high FIASMA activity. These findings posit that prospective interventional studies of antidepressants with the highest FIASMA activity may be appropriate to help identify variant-agnostic, affordable, and scalable interventions for outpatient and inpatient therapy of COVID-19.
Disclosure of InterestNone Declared
Cyclothymia, bipolar disorder and multiple sclerosis: A case report
- M. D. P. Paz Otero, E. Lozano Bori, J. Sánchez Rodríguez, S. Puyal González, M. Fernández Fariña, F. Mayor Sanabria, A. Francos Ajona
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, pp. S703-S704
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Introduction
We present the case of a 49-year-old woman who was diagnosed with multiple sclerosis at the age of 19 and suffers from an affective disorder that has been evolving for years. This condition, for which she has been followed by psychiatry and psychology for more than ten years, consists of alternating periods of hypomania lasting weeks and phases in which frank depressive symptomatology predominates, with no phases of euthymia in between and with a predominance of severe deterioration of her functionality at both poles.
Objectives(1) We will review the term cyclothymia and explore the concept of “cyclothymic temperament” advocated by some authors, in order to be able to understand the dimension of the present case and reformulate its approach.
(2) The relationship between multiple sclerosis and bipolar spectrum disorders will be covered, reviewing the current knowledge in this regard and relating it to the patient’s symptomatology.
MethodsA review of the patient’s clinical history will be carried out, taking into account her life history, the complementary tests performed as well as the multiple therapeutic approaches tried over the last few years.
Likewise, a bibliographic review of the available scientific literature will be carried out in relation to the diagnosis of cyclothymia or bipolar disorder type II, the controversial term “cyclothymic temperament”, and the relationship that these diagnoses have with the diagnosis of Multiple Sclerosis.
Results(1) Our patient could fit into what many authors define as a cyclothymic temperament, fulfilling, in certain episodes, the criteria that the manuals propose for bipolar disorder type II.
(2) 2.1 The prevalence of bipolar affective disorder in MS is approximately twice as high as in the general population (rates of 0.3-2.4%). 2.2 Patients with MS have higher scores in cyclothymic and hyperthymic temperament than the control group. 2.3 Certain drugs generally used in BD also seem to have a beneficial effect on MS.
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ConclusionsThe reformulation of the concept of cyclothymia would allow us to recognize in our patient a basic temperament of long evolution that would be the substrate on which different factors have subsequently influenced, such as antidepressant drugs or multiple sclerosis. In addition, it is necessary to know the association between BD and MS, in order to be able to offer an adequate treatment, contemplating some pharmacological options such as Lithium or some Atypical Antipsychotics, given the beneficial effect both for the affective disorder and for the neurological process.
Disclosure of InterestNone Declared
Analysis of the implementation of the collaboration programme between the headache unit and the liaison psychiatry programme
- F. Garcia Lazaro, F. Gotor Sanchez Luengo, E. Garcia Ligero del Rincon, A. Luque Budia
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, p. S768
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Introduction
Headache is associated with a wide spectrum of comorbid, statistically and biologically related pathological processes. A person with headache is more likely to have a psychological disorder than the rest of the general population, even more so if the headache is chronic. Psychiatric comorbidity has been shown to act as a risk factor in the chronification of headache and may contribute to increased disability. Anxiety and mood disorders are the psychiatric comorbidities that most influence aspects of the disease such as prognosis, response to treatment and even quality of life.
ObjectivesTo analyse the results of the implementation of a joint consultation between the headache unit and the liaison psychiatry programme.
To evaluate the efficacy of interdisciplinary intervention in patients diagnosed with resistant headache.
MethodsWe performed a descriptive analysis of the database of patients included in the headache programme including data on neurological diagnosis, psychiatric diagnosis, type of intervention, referral to psychiatric consultation and number of subsequent revisions.
ResultsDiagnoses related to anxious and depressive symptomatology are the most common diagnoses in patients diagnosed with treatment-resistant headache.
In most of the patients analysed in the database a single joint intervention was necessary.
Referral to mental health consultations from the programme did not lead to an increase in urgent demands with a clinical correlation in terms of diagnostic orientation
ConclusionsJoint intervention in the management of these patients has been found to be beneficial in the reinterpretation of symptoms and progressive desensitisation to fear of chronic illness.
Training in symptom detection at the psychopathological level is important for professionals from other areas as well as training in interviewing skills.
More studies are needed to analyse the outcome of joint interventions in patients with difficult-to-manage chronic diseases and their comorbidities.
Disclosure of InterestNone Declared
Visual hallucinations and age-related macular degeneration: case presentation and a brief literature review
- M. M. Gutiérrez Rodríguez, F. García Sánchez, M. Á. Corral Alonso, J. J. Vázquez Vázquez, C. Moreno Menguiano
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, pp. S936-S937
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Introduction
age-related macular degeneration (AMD) is an ocular disease involving central vision. It is one of the mainreasons of vision loss in people over 50. Seeing non-existing faces or shapes are described in AMD. Symtoms of visualhallucinations that occur as a result of vision loss is known as Charles Bonnet syndrome (CBS). These patients haveintact cognition, do not have hallucinations in any other sensory modalities, and retain insight into the unreal nature oftheir hallucinations.
Objectivesthe aim of this work is analizing ethiology, demographic characteristics, clinica features and treatment inpatients with AMD and visual hallucinations
Methodsa literature search using electronic manuscripts available in PubMed database published during the last ten years with further description and discussion of a single-patient clinical case.
Resultsin different studies in patients diagnosed with AMD, the reported prevalence ranges between 15 up to 39percent. Patients with more significant vision loss may be more likely to experience visual hallucinations. In large caseseries, mean age is 70 to 85 years. Hallucinations can last few minutes or several hours. On average, people experiencethese hallucinations on and off for about 3 years. Those who experience hallucinations tend to see multiple types ofimages, particularly people and faces.The diagnosis of CBS is made when visual hallucinations occur in patients withvision loss in the absence of psychosis, delirium, or other causes.
There is no specific treatment for CBS: optimal ocular care, education and differents techniques to manage hallucinations(changing your lighting conditions and environment, blinking frequently or moving your eyes side-to-side rapidly whilekeeping your head still…). Antidepressants, anticonvulsants, anxiolytics and low-dose of antipsychotics have been used for CBS with positiveeffects in previous reports, but the efficacy of these drugs in the treatment is somewhat questionable and should bereserved for those who exhibit high levels of distress and have not responded to conventional intervention.
Case report: 80-years old woman who presented with a 4 month history of hallucinations and legally blind from AMD. Aworkup for other pathological causes of visual hallucinations was negative.
ConclusionsCBS is an under-recognized and under-reported disorder that involves visual hallucinations in visuallyimpaired individuals. It requires a multidisciplinary approach from neurologists, psychiatrists, general practitioners andophthalmologists. New studies are needed in order to understand its clinical presentation and to improve its management.
Disclosure of InterestNone Declared
An empirical staging model for schizophrenia using machine learning
- M.-C. Clara, F. Sánchez-Lasheras, A. García-Fernández, L. González-Blanco, P. A. Sáiz, J. Bobes, M. P. García-Portilla
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, pp. S626-S627
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Introduction
One of the great challenges still to be achieved in schizophrenia is the development of a staging model that reflects the progression of the disorder. The previous models suggested have been developed from a theoretical point of view and do not include objective variables such as biomarkers, physical comorbidities, or self-reported subjective variables (Martinez-Cao et al. Transl Psychiatry 2022; 12(1) 1-11).
ObjectivesDevelop a multidimensional staging model for schizophrenia based on empirical data.
MethodsNaturalistic, cross-sectional study. Sample: 212 stable patients with Schizophrenia (F20). Assessments: ad hoc questionnaire (demographic and clinical information); psychopathology: PANSS, CDS, OSQ, CGI-S; functioning: PSP; cognition: MATRICS; laboratory tests: C-Reactive Protein (CRP), IL-1RA, IL-6, Platelets/Lymphocytes (PLR), Neutrophils/Lymphocytes (NLR), and Monocytes/Lymphocytes (MLR) ratios. Statistical analysis: Variables selection was performed with an ad hoc algorithm developed for this research. The referred algorithm makes use of genetic algorithms (GA) to select those variables that show the best performance for the patients classification according to their global CGI-S. The objective function of the GA maximizes the individuals correct classification of a support vector machines (SVM) model that employs as input variables those given by the GA (Díez-Díaz et al. Mathematics 2021; 9(6) 654). Models performance was assessed with the help of 3-fold cross-validation and these process was repeated 10,000 times for each one of the models assessed.
ResultsMean age(SD): 39.5(13.54); men: 63.5%; secondary education: 59.50%. Most patients in our sample had never been married (74.10%), and more than a third received disability benefits due to schizophrenia (37.70%). The mean length of the disease was 11.98(12.02) years. The best SVM model included the following variables: 1)Clinical: number of hospitalizations, positive, negative, depressive symptoms and general psychopathology; 2)Cognition: speed of processing, visual learning and social cognition; 3)Functioning: PSP total score; 4)Biomarkers: PLR, NLR and MLR. This model was executed again 100,000 times applying again 3-fold cross-validation. In 95% of the algorithm executions more than a 53.52% of the patients were classfied in the right CGI-S category. On average the right classification was of 61.93%. About specificity and sensitivity the average values obtained were of 0.85 and 0.64 respectively.
ConclusionsOur staging model is a robust method that appropriately distributes patients according to the severity of the disorder. Highlights the importance of clinical, functional and cognitive factors to classify patients. Finally, the inflammatory parameters PLR, NLR and MLR have also emerged as potential biomarkers for staging schizophrenia.
Disclosure of InterestNone Declared