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Time discrimination in psychosis: findings from a neuroimaging study
- J. Goena, C. Vidal, S. Solís, M. Fernandez Seara, F. Ortuño, S. Garcés, M. Fernández
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, pp. S130-S131
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Introduction
Previous functional neuroimaging studies have demonstrated a brain network responsible of time discrimination (TD) processes, which may play a significant mediating role in other cognitive processes, such as change detection and cognitive control. The study of TD and its dysfunction in psychosis has become a matter of growing interest. We hypothesize that the impairment of the TD network is involved both in the mechanisms of psychosis and in the cognitive deficit presented by patients.
Objectives1. To delimit the brain regions involved in TD.
2. To examine the dysfunction in TD brain network in patients diagnosed with psychosis.
3. To sudy the integrity of brain white matter pathways in psychosis.
4. To verify whether the neuroimaging findings and TD test performance predict the neurocognitive profile of the patients.
MethodsParticipants included 20 patients with psychosis (PSY group) and 13 healthy controls (HC group). PSY group participants met remission criteria for 6 months prior to the study. Participants were interviewed for sociodemographic information and clinical assessments. They underwent a detailed cognitive assesment using the Measurement and Treatment Research to Improve Cognition in Schizophrenia (MATRICS) Consensus Cognitive Battery (MCCB). Neuroimaging study was performed on a 3 Tesla MRI scanner. We designed an experimental task including a test tool to assess TD and Oddbal detection (OD) paradigms with a cognitive control component. The task was conducted under functional magentic resonance imaging (fMRI). We used the general linear model analysis of the individual data of the fMRI images and the random effects model for group inference. Group differences in DTI were tested using tract-based spatial statistics (TBSS).
ResultsWe find statistically significant differences (fMRI) in the activity related to TD (in HC), with greater activity in frontal cortical regions, the insular cortex and the cerebellum. In the PSY group, differences in the functionality and activation pattern of brain networks responsible for TD are observed, although voxel clustering does not reach the cluster significance limit when compared to HC. Compared to the HC, the PSY group has a significant deficit of fractional anisotropy (DTI) in the whole brain and in 21 specific brain regions. The PSY group has significantly lower scores in six of the seven cognitive domains than the control group, as well as in the overall composite. We correlated FA values in the groups of interest with MCCB scores.
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ConclusionsWe have defined the TD network, its relationship with other brain networks and cognitive processes of more complexity. The inclusion of participants with stable psychosis allowed us to analyze de TD disfunction in the PSY group. We compared the integrity of TD related brain pathways and correlated the findings with various clinical characteristics and the cognitive impairment present in psychotic patients.
Disclosure of InterestNone Declared
Meta-analysis of the variability in the individual response to pharmacological treatments for mania in bipolar disorder
- G. Anmella, M. De Prisco, V. Oliva, M. Sanabra, L. Fortea, M. Ortuño, G. Fico, A. Murru, E. Vieta, D. Hidalgo-Mazzei, A. Solanes, J. Radua
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, p. S84
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Introduction
Many studies have investigated whether there exist predictors of good response to antimanic drugs in bipolar disorder (BD). However, these factors predict response or only indicate benign illness course.
ObjectivesTo shed some light on the topic, we tested whether the response to antimanic drugs showed any variability beyond that expected by the effects of illness course and placebo.
MethodsWe included all double-blind, placebo-controlled RCTs of oral pharmacotherapies targeting adult patients with acute bipolar mania from 1991 to 2020. The primary outcome was the variance of the improvement in manic symptoms in treated individuals compared to placebo. The effect size was the log variability ratio (logVR). We performed a random-effects meta-analysis, including assessments of heterogeneity, sensitivity/cumulative/subgroup analyses, and meta-regression.
Results42 RCTs (46 comparisons) from a total of 8,438 BD patients with acute mania (53.7% male, mean age=39.3; 5,563 treatment/2,875 control groups) were included in the analysis. Individuals in active treatment groups did not show variability in the response beyond that observed in individuals under placebo (VR=1; 95% C.I.=0.97,1.03; p-value=0.97). No heterogeneity was detected between the studies (I2=0%; tau2=0%; Q=29.21; df=45; p-value=0.97). Results were similar in the leave-one-out/cumulative/subgroup analyses. Meta-regression did not show influences by age, sample size, sex, severity of manic symptoms at baseline, or clinical features (rapid cycling, mixed or psychotic features).
ConclusionsThis meta-analysis shows no evidence of differences in the individual response to treatments. These findings suggest that the average treatment effect is a reasonable assumption for the individual BD patient with acute mania. The presented article adds evidence to the equivalent results in schizophrenia-spectrum disorders, clinical high-risk state for psychosis, and major depressive disorder, not supporting classification in responders vs. non-responders. However, these findings should be balanced with results from other fields supporting such classification.
Disclosure of InterestNone Declared
Suicide behaviour and Problematic Internet Use
- J. Ortuño-Sierra, B. Lucas Molina, A. Gutiérrez, R. Aritio Solana, A. Pérez-Albéniz, E. Fonseca Pedrero
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- Journal:
- European Psychiatry / Volume 65 / Issue S1 / June 2022
- Published online by Cambridge University Press:
- 01 September 2022, pp. S69-S70
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Introduction
The use of internet among children and adolescent has risen in the last decade. In addition, suicide is the second cause of death among adolescents. Previous research have indicated the relation between Problematic Internet Use (PIU) and different mental health problems. Nonetheless there is a lack of studies analyzing the relation between suicide behaviour and PIU
ObjectivesThe main objective of the present work was to analyze the relation between Problematic Internet Use and suicide behaviour and depression in adolescents
MethodsA total of 1036 adolescents (450 males) were randomly selected. Mean age was 15,21 (SD = 1,23). The Adolescent Behavioural Suicide Scale SENTIA, The Reynolds Adolescent Depression Scale Short Form (RADS-SF), and The Compulsive Internet Use Scale (CIUS) were used. A Manova was performed with two groups (risk and non-risk to PIU) as independent variables and suicide and depression scores as dependent variables
ResultsThe results revealed a statiscally signifficant association between PIU and both depression and suicide behaviour (λ = 0.245, F(2,81,000) = 15.549, P ≤ 0.001, η² = 0.116). In particular, adolescents at a higher risk for PIU obtained higher scores on suicide behaviours and depression.
ConclusionsResults found in the present study reveal that adolescents have moderate prevalence rates for PIU. Also adolescents at risk for PIU with a total of more than 3 hour sof internet use everyday were at a higher risk for suicide. Prevention strategies should be devote to intervene in internet use as it maybe a variable affecting suicide behaviour.
DisclosureNo significant relationships.
Problematic Internet Use and wellbeing during adolescence
- J. Ortuño-Sierra, A. Pérez-Albéniz, A. Ciarreta, A. Díez Gómez, E. Fonseca Pedrero
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- European Psychiatry / Volume 65 / Issue S1 / June 2022
- Published online by Cambridge University Press:
- 01 September 2022, p. S296
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Introduction
PIU has not yet been recognized by diagnostic classification systems, but it has received increasing research and clinical attention. It is defined as a generalized and compulsive use of the Internet associated with a loss of control and negative consequences for the individual
ObjectivesThe main goal was to analyze the relation between problematic Internet Use and wellbeing in adolescents
MethodsThe sample included a total of 1059 adolescents (47% were males). Age range was between 14 and 18 years old (M = 15,12; SD = 1,03). We used the Compulsive Internet Use Scale to assess Problematic Internet Use and the Strengths and Difficulties Questionnaire to screen for psychological difficulties and prosocial behaviour.
ResultsThe results found in the ANOVA revealed that problematic internet use was statistically significant associated with psychological difficulties and prosocial capabilities (λ = 0.475, F(3,83,000) = 25.569, P ≤ 0.001, η² = 0.215).Adolescents with higher levels of Problematic Internet Use revealed more emotional and behavioural difficulties. In addition. those adolescents with higher levels of prosocial ablities were at a lower risk for Problematic Internet Use.
ConclusionsPrevious research have revealed that the use of Internet has almost doubled in the last decade among adolescents across different European countries. Results revealed statistically significant correlations between Problematic Internet Use and indicators of well-being such as emotional difficulties and behavioral problems, as well as prosocial behaviours. Prevention strategies should focus on detecting problematic internet use among adolescents, as it is a variable related with different psychological difficulties that are diminishing adolescents’ well-being.
DisclosureNo significant relationships.
Differences in interleukins’ patterns between dysthymia and major depression
- J. Schlatter, F. Ortuño, S. Cervera-Enguix
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- European Psychiatry / Volume 16 / Issue 5 / August 2001
- Published online by Cambridge University Press:
- 16 April 2020, pp. 317-319
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We assessed whether cytokine production–interleukin (IL)-1β, IL-6 and tumour necrosis factor-α (TNFα)–is affected in depressed patients, dysthymia (Dt) and major depression (MD), and its association with various parameters of severity and clinical course. We found a possible different pattern of interleukin production between Dt and MD.
The Measurement Invariance of Schizotypy in Europe
- E. Fonseca-Pedrero, J. Ortuño-Sierra, G. Sierro, C. Daniel, M. Cella, A. Preti, C. Mohr, O.J. Mason
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- European Psychiatry / Volume 30 / Issue 7 / October 2015
- Published online by Cambridge University Press:
- 16 April 2020, pp. 837-844
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The short version of the Oxford-Liverpool Inventory of Feelings and Experiences (sO-LIFE) is a widely used measure assessing schizotypy. There is limited information, however, on how sO-LIFE scores compare across different countries. The main goal of the present study is to test the measurement invariance of the sO-LIFE scores in a large sample of non-clinical adolescents and young adults from four European countries (UK, Switzerland, Italy, and Spain). The scores were obtained from validated versions of the sO-LIFE in their respective languages. The sample comprised 4190 participants (M = 20.87 years; SD = 3.71 years). The study of the internal structure, using confirmatory factor analysis, revealed that both three (i.e., positive schizotypy, cognitive disorganisation, and introvertive anhedonia) and four-factor (i.e., positive schizotypy, cognitive disorganisation, introvertive anhedonia, and impulsive nonconformity) models fitted the data moderately well. Multi-group confirmatory factor analysis showed that the three-factor model had partial strong measurement invariance across countries. Eight items were non-invariant across samples. Significant statistical differences in the mean scores of the s-OLIFE were found by country. Reliability scores, estimated with Ordinal alpha ranged from 0.75 to 0.87. Using the Item Response Theory framework, the sO-LIFE provides more accuracy information at the medium and high end of the latent trait. The current results show further evidence in support of the psychometric proprieties of the sO-LIFE, provide new information about the cross-cultural equivalence of schizotypy and support the use of this measure to screen for psychotic-like features and liability to psychosis in general population samples from different European countries.
Algorithm-based protocol for the identification, management and treatment of psychiatric patients with acute psychomotor agitation
- E. Vieta, M. Garriga, L. Cardete, M. Bernardo, M. Lombraña, J. Blanch, R. Catalán, M. Vázquez, V. Soler, N. Ortuño, A. Martínez-Arán
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- European Psychiatry / Volume 41 / Issue S1 / April 2017
- Published online by Cambridge University Press:
- 23 March 2020, p. S566
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Introduction
Psychomotor agitation is the most common behavioural disorder observed in emergency and psychiatry departments. This syndrome is characterized by excessive or inappropriate motor or verbal activity and important emotional tension. Psychomotor agitation may be associated with medical conditions, substance intoxication/withdrawal and in a significant number of cases with schizophrenia or bipolar I disorder.
ObjectivesThe objective of this protocol was to provide up-to-date guidance to identify, manage and treat patients with an episode of acute agitation, considering the consensus clinical knowledge, current ethical standards and available therapies. This protocol is aimed to be a patient-centric tool helping to anticipate and prevent the escalation of agitation symptoms.
MethodsThe method followed to elaborate this document was through a combination of comprehensive bibliographical review (complied in the article “Assessment and management of agitation in psychiatry: expert consensus” by Garriga M. et al. (World J Biol Psychiatry, 2016), interaction with patients, and the clinical experience in our centre.
ResultsThe elaboration of this protocol resulted in a document that contains guidelines to identify, manage and treat patients efficiently, ethically and safely. One of the novelties of the protocol is the addition of dichotomies based on the patients’ willingness to cooperate. The information is summarized in easy-to-use algorithms for non-specialized healthcare professionals.
ConclusionsThis protocol may provide the basis of a new standardized treatment paradigm for psychomotor agitation which may help improve the patient's experience and therapeutic alliance with the healthcare professional and optimize resources in healthcare centres.
Disclosure of interestCOI: The preparation of the protocol was funded by an unrestricted grant from Ferrer International. The company had no say on protocol content. Dr Vieta has received funding for research projects and/or honoraria as a consultant or speaker for from the following companies and institutions: AB-Biotics, Allergan, AstraZeneca, Bial, Bristol-Myers Squibb, Dainippon Sumitomo Pharma, Elan, Eli Lilly, Farmaindustria, Ferrer, Forest Research Institute, Gedeon Richter, Glaxo-Smith-Kline, Janssen, Lundbeck, Otsuka, Pfizer, Roche, Sanofi-Aventis, Servier, Shire, Solvay, Sunovion, Takeda, Telefónica, Institute of Health Carlos III [Instituto de Salud Carlos III], Séptimo Programa Marco (ENBREC), Brain and Behaviour Foundation (NARSAD) and Stanley Medical Research Institute.
Maternal grazing on stubble and Mediterranean shrubland improves meat lipid profile in light lambs fed on concentrates
- L. Mateo, P. Delgado, J. Ortuño, S. Bañón
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Concentrates-fed lamb meat is often associated with an unfavourable lipid profile (high levels of saturated and/or n-6 polyunsaturated fatty acids; SFA and PUFA). For this reason, Spanish sheep producers from Mediterranean areas are turning to traditional grazing by ewes to obtain healthier lamb meat. The objective of this research was to determine the effects of maternal grazing on the fatty acid (FA) composition of weaned lamb meat. The ewes (Segureña breed) were allocated to two different rearing systems during pregnancy (5 months) and lactation (45 days): (i) feeding indoors on barley grain and lucerne pellets; (ii) grazing on cereal stubble, fallow land and seasonal pastures consisting of Mediterranean shrubs, herbs and trees. Two groups of 20 autumn and spring lambs were sampled. The lambs were weaned at 13.1±0.9 kg and 45.0±4.1 days age and fed on grain-based concentrates until they reached 24.8±2.1 kg live weight (light lambs slaughtered at 98.3±3.6 days of age). The FA content was determined in the intramuscular loin fat by gas chromatography using a flame ionization detector. The ewe diet did not affect the levels of the main lamb FAs (C18:1c+t, C16:0 and C18:2c), and so did not provide any additional reduction in fat saturation. Saturated fatty acids represented around 40% of total FAs determined in the meat. Ewe grazing acted as an n-3 PUFA-promoting diet, providing a lamb meat with a lower n-6/n-3 ratio. Spring lamb meat had higher proportions of n-3 PUFA (C18:3n-3, C20:5, C22:5 and C22:6) and conjugated linoleic acid (C18:2c9t11+c11t9) to the detriment of the n-6 PUFAs (C20:4, C20:2 and C22:4), while autumn lamb meat also had higher levels of C18:3n-3 and C18:3n-6, and lower level of C20:4, which points to little seasonal differences. The n-6/n-3 ratio achieved by ewe grazing fell from 8.2 to 4.1 (Spring) and from 7.6 to 5.5 (Autumn), values which are close to those recommended in human diet for good cardiovascular health. These n-6/n-3 reductions were associated with lower levels of total PUFA and C20:4n-6. Our research concluded that grazing on stubble and Mediterranean shrubland by ewes, a sustainable rearing practice involving local agro resources, contributed to obtaining weaned lamb meat with a more favourable lipid profile and so can be recommended to sheep farmers.
The structure of schizotypal personality traits: a cross-national study
- E. Fonseca-Pedrero, M. Debbané, J. Ortuño-Sierra, R. C. K. Chan, D. C. Cicero, L. C. Zhang, C. Brenner, E. Barkus, R. J. Linscott, T. Kwapil, N. Barrantes-Vidal, A. Cohen, A. Raine, M. T. Compton, E. B. Tone, J. Suhr, J. Muñiz, A. Fumero, S. Giakoumaki, I. Tsaousis, A. Preti, M. Chmielewski, J. Laloyaux, A. Mechri, M. A. Lahmar, V. Wuthrich, F. Larøi, J. C. Badcock, A. Jablensky
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- Psychological Medicine / Volume 48 / Issue 3 / February 2018
- Published online by Cambridge University Press:
- 17 July 2017, pp. 451-462
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Background
Schizotypal traits are considered a phenotypic-indicator of schizotypy, a latent personality organization reflecting a putative liability for psychosis. To date, no previous study has examined the comparability of factorial structures across samples originating from different countries and cultures. The main goal was to evaluate the factorial structure and reliability of the Schizotypal Personality Questionnaire (SPQ) scores by amalgamating data from studies conducted in 12 countries and across 21 sites.
MethodThe overall sample consisted of 27 001 participants (37.5% males, n = 4251 drawn from the general population). The mean age was 22.12 years (s.d. = 6.28, range 16–55 years). The SPQ was used. Confirmatory factor analysis (CFA) and Multilevel CFA (ML-CFA) were used to evaluate the factor structure underlying the SPQ scores.
ResultsAt the SPQ item level, the nine factor and second-order factor models showed adequate goodness-of-fit. At the SPQ subscale level, three- and four-factor models displayed better goodness-of-fit indices than other CFA models. ML-CFA showed that the intraclass correlation coefficients values were lower than 0.106. The three-factor model showed adequate goodness of fit indices in multilevel analysis. The ordinal α coefficients were high, ranging from 0.73 to 0.94 across individual samples, and from 0.84 to 0.91 for the combined sample.
ConclusionsThe results are consistent with the conceptual notion that schizotypal personality is a multifaceted construct and support the validity and utility of SPQ in cross-cultural research. We discuss theoretical and clinical implications of our results for diagnostic systems, psychosis models and cross-national mental health strategies.
Use of dietary rosemary diterpenes to inhibit rancid volatiles in lamb meat packed under protective atmosphere
- J. Ortuño, R. Serrano, S. Bañón
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The objective of the present study was to determine the inhibitory effect of dietary rosemary diterpenes on the formation of the volatile organic compounds (VOCs) responsible for rancid flavour in raw lamb meat. The lamb diet was supplemented during the fattening stage with two levels (200 and 400 mg/kg feed) of a dietary rosemary extract (DRE) containing carnosic acid and carnosol (1 : 1, w/w). The formation of VOCs (determined by headspace solid-phase microextraction at 40°C and MS) and odour deterioration (assessed by quantitative descriptive analysis) were monitored in meat fillets (longissimus dorsi-lumborum muscle) packed in a 70/30 O2/CO2 protective atmosphere and kept at 2°C for up to 14 days. The raw meat odour deteriorated under pro-oxidizing conditions due to the development of an incipient rancidity caused by the formation of volatiles from lipid oxidation. A total of 46 volatile compounds were determined in lamb headspace: 18 aldehydes, seven alcohols, seven organic acids, six ketones, four furan compounds, two benzene compounds, one ester and one terpenoid. The use of DRE contributed to inhibit VOC formation and rancidity. Heptanal, octanal, nonanal and 2-pentyl-furan were the only VOCs affected (P<0.05) by the diet at any storage time. In general, VOC formation rate during storage was lower (P<0.05) in the meat from lambs that received a diet supplemented with 400 mg DRE/kg feed than in the meat from lambs receiving no dietary supplementation. VOC inhibition was less effective when the dose of DRE was reduced to 200 mg/DRE kg, although it depended on the VOC analysed. The intensity of rancid odour correlated (P<0.05) with the values of 43 of the 46 VOCs. The highest coefficients were obtained for octanol and octanal (R>0.75; P<0.001), although similar values were obtained for the coefficients of a large number of carbonyl, alcohols and furan compounds, among other volatiles, which can be considered molecular markers of rancidity in raw lamb meat. Principal component analysis confirmed that the differences in the VOC profile make it possible to identify whether or not samples have been reinforced with dietary rosemary diterpenes. Thus, VOC profiling can be regarded as a useful tool for assessing the dietary treatments used in sheep to improve the oxidative stability of lamb meat.
A new fossil resin with biological inclusions in Lower Cretaceous deposits from Álava (northern Spain, Basque-Cantabrian Basin)
- Jesus Alonso, Antonio Arillo, Eduardo Barrón, J. Carmelo Corral, Joan Grimalt, Jordi F. López, Rafael López, Xavier Martínez-Delclòs, Vicente Ortuño, Enrique Peñalver, Paulo R. Trincão
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- Journal of Paleontology / Volume 74 / Issue 1 / January 2000
- Published online by Cambridge University Press:
- 14 July 2015, pp. 158-178
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The occurrence of amber in Sierra de Cantabria (álava, Basque Country) has been known for more than two decades but biological inclusions have only recently been found. The existence of crustaceans (amphipods and isopods), chelicerates (acari and arachnids), 12 orders of insects, and several bird feathers are reported in this preliminary study. In addition, there are leaf remains, molluscs, and a fair number of inorganic inclusions.
Pollen analysis of the clastic series indicates an age between upper Aptian—middle Albian, which allows an assignment of this stratigraphic unit to the Nograro Formation. Chemical analysis indicates that the amber has high maturity, which reflects its Cretaceous age. Chemical composition analysis also indicates an araucariacean origin, which is corroborated by pollen found within the amber deposit.
This new fossil site provides information for the reconstruction of paleocommunities of arthropods and sedimentary environments in the extreme south of the Basque-Cantabrian Basin during the Lower Cretaceous, characterized by coniferous forests with an understory of vascular cryptograms. Some of the identified arthropods add to the fossil record for various groups that are poorly known or unknown for this time period. This Lagerstätte constitutes one of the most important deposits of Mesozoic amber in the world.