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Despite the increased awareness and action towards Equality, Diversity and Inclusion (EDI), the glaciological community still experiences and perpetuates examples of exclusionary and discriminatory behavior. We here discuss the challenges and visions from a group predominantly composed of early-career researchers from the 2023 edition of the Karthaus Summer School on Ice Sheets and Glaciers in the Climate System. This paper presents the results of an EDI-focused workshop that the 36 students and 12 lecturers who attended the summer school actively participated in. We identify common threads from participant responses and distill them into collective visions for the future of the glaciological research community, built on actionable steps toward change. In this paper, we address the following questions that guided the workshop: What do we see as current EDI challenges in the glaciology research community and which improvements would we like to see in the next fifty years? Contributions have been sorted into three main challenges we want and need to face: making glaciology (1) more accessible, (2) more equitable and (3) more responsible.
Les élections municipales de 2021 à la Ville de Québec ont été marquées par une forte compétition entre cinq candidats et une saillance des enjeux concernant la construction d'un tramway et d'un troisième lien autoroutier entre Québec et sa Rive-Sud. Ainsi, cette élection représente un contexte idéal pour étudier le comportement électoral au niveau local et plus spécifiquement le vote sur enjeu qui a été très peu étudié dans le contexte municipal. Nous soutenons que ces deux enjeux ont acquis une valeur symbolique et ont été exploités comme enjeu de brèche par le candidat à la mairie Jean-François Gosselin. À l'aide d'une analyse multivariée, nous testons la relation entre l'appui aux deux projets de transport et l'intention de vote. Nos résultats montrent que les attitudes des électeurs envers ces deux enjeux sont fortement corrélées avec leur choix de vote et suggèrent une continuité entre le comportement électoral municipal, provincial et fédéral, du moins lorsqu'il est question de vote sur les enjeux.
The harmful consumption of alcohol is known for how tortuous its management can be in mental health, encouraging introspection of it as a serious problem is perhaps the main key to starting to battle against its damaging influence on the development of a functional and full life.
Objectives
To describe a clinical case showing an unpredictible complication in an alcohol detoxification process.
Methods
54-year-old man, native of Cádiz, widowed for half a decade, without children. He resides with his parents in the family home. Currently unemployed for approximately a year. He has previously worked in the IT sector. As a notable somatic history, we found long-established arterial hypertension and a total hip replacement. He has been under irregular follow-up with a mental health team for anxiety-depressive symptoms in the context of grief. He goes to the emergency service brought by his family to begin the detoxification process in the hospital setting. He acknowledges ethanol consumption since he was widowed, which began when he awakes; quantities that ranged between one or up to three bottles of distilled liquor per day, generally consumption is in the home environment. A little less than a year ago, he began to isolate himself in his room and abandon his self-care, eating increasingly insufficient food intake, refusing to receive professional care to quit the habit, mainly because he did not recognize it as disruptive.
The patient was admitted to hospital with symptoms suggestive of withdrawal, making it extremely difficult to control blood pressure levels. On the third day of admission to the acute care unit, fever peaks, blood pressure levels well below normal parameters, and compromised level of consciousness began to be evident.
Results
Blood tests were performed that, together with the clinical picture, suggested imminent septic shock, so critical care was contacted for transfer and stabilization. A germ of probable urinary etiology sensitive to a broad spectrum of antibiotics was isolated in blood cultures, and the medication of the detoxification process was progressively optimized. Once clinical stability was achieved at all levels, an inpatient cessation resource was managed, which the patient accepted and considered suitable for his complete recovery.
Conclusions
A holistic approach to the alcoholic patient is important, since serious problems of an organic nature often arise. This is why a multidisciplinary intervention is necessary, as well as a holistic approach to care, involving both classic pharmacology and assiduous long-term psychotherapeutic intervention.
Schizotypal personality is a condition suffered by 4% of the population. It is defined by presenting interpersonal, behavioral and perceptual features similar to the clinical features of psychotic disorders, such as schizophrenia, in less intensity and dysfunctionality, but at risk of reaching psychosis.
Objectives
Presentation of a clinical case about a patient with premorbid schizotypal personality traits presenting with an acute psychotic episode.
Methods
Literature review on association between schizotypal personality and psychosis.
Results
A 57-year-old woman with a history of adaptive disorder due to work problems 13 years ago, currently without psychopharmacological treatment, goes to the emergency room brought by the emergency services due to behavioral alteration. She reports that “her husband and son wanted to sexually abuse her”, so she had to run away from home and has been running through the streets of the town without clothes and barefoot.
Her husband relates attitude alterations and extravagant behaviors of years of evolution, such as going on diets of eating only bread for 40 days or talking about exoteric and religious subjects, as believing that the devil got inside her husband through a dental implant. He reports that these behaviors have been accentuated during the last month. She has also created a tarot website, and has even had discussions with several users. She is increasingly suspicious of him, has stopped talking to him and stays in his room all day long, with unmotivated laughter and soliloquies.
It was decided to admit him to Psychiatry and risperidone 4 mg was started. At the beginning, she was suspicious and reticent in the interview. As the days went by, communication improved, she showed a relaxed gesture and distanced herself from the delirious ideation, criticizing the episode.
Conclusions
In recent years, there has been increasing interest in understanding the association between schizotypy and serious mental disorder. Several theories understand schizotypy as a natural continuum of personality that reveals genetic vulnerability and that can lead to psychotic disorder when added to precipitating factors. Other theories define schizotypy as a “latent schizophrenia” where symptoms are contained and expressed in less intensity.
Around 20% evolves to paranoid schizophrenia or other serious mental disorders. It is complex to distinguish between those individuals in whom schizotypy is a prodrome and those in whom it is a stable personality trait. To date, studies applying early psychotherapeutic or pharmacological interventions have had insufficient and contradictory results, and the follow-up and treatment of these individuals could be a stress factor and a stigma. Some studies are looking for reliable markers of evolution to schizophrenia in order to establish adequate protocols for detention, follow-up and treatment.
Clozapine is an atypical antipsychotic synthesised in 1958. It was withdrawn from the market in the 1970s due to the appearance of agranulocytosis, but was reintroduced due to strong evidence of its efficacy and superiority over other antipsychotics in treatment-resistant schizophrenia.
Objectives
To describe the adequate response to clozapine in treatment-refractory psychosis.
Methods
Review of the scientific literature based on a relevant clinical case.
Results
A 16-year-old woman was admitted to a psychiatric inpatient unit for psychotic symptoms and behavioural disorders. She lives with her father and older sister; she has not been in contact with her mother, who lives in another country, for several years. She attends secondary school, with poor academic performance. Maternal diagnosis of schizophrenia. She started using cannabis two years ago, with a progressive increase up to 20 grams per week. He reports the onset of a feeling of strangeness a year ago, with progressive isolation in his room, referring to delirious ideation of harm towards classmates and people from his town, self-referentiality and delirious interpretations of religious mystical content (“God speaks to me through a dove”). He comments on the phenomenon of theft and thought-reading. Soliloquies and unmotivated laughter are observed.
Conclusions
Treatment was started with risperidone, progressively increasing the dose up to optimisation, without achieving a decrease in positive symptoms, but with the appearance of excessive sedation and sialorrhoea. It was combined with aripiprazole up to 20mg, maintained for a couple of weeks, without significant clinical improvement. Given the failure of two lines of therapy, it was decided to change to clozapine up to a dose of 75mg, with adequate tolerance and response, achieving a distancing of the delirious ideation. Regular haematological controls were performed, with no alterations in haemogram or troponins.
We present the case of a 48-year-old woman, a nurse, referred from the Internal Medicine department for evaluation of depressive symptoms and accompanying somatic presentation following COVID-19. The aim is to highlight a recently emerging condition that we are increasingly encountering in our clinics, which can complicate the diagnosis of an underlying affective disorder
Objectives
Diagnosed with COVID-19, confirmed by a positive PCR test, 6 months ago following an infection in the workplace. The clinical picture consisted of mild symptoms, with a ten-day course and apparent resolution at the time of hospitalization. She returned to her work activities and gradually began to report fluctuating symptoms, including headaches, mild shortness of breath, fatigue, as well as a tingling sensation in the upper extremities, especially in the hands. Additionally, she described feelings of restlessness, depressive mood, and intense fatigue. In additional tests: (CT-Scan) there are signs of mild bilateral lower lung fibrosis.
Methods
Treatment with Duloxetine was initiated for a case of depressive symptoms with accompanying physical symptoms. The differential diagnosis considered Major Depressive Disorder, Single Episode, and Adjustment Disorder with Depressed Mood.”
Results
We are facing a clear case of depressive clinic that may have endogenous features, if we adhere to criteria such as those in the DSM-5, as it would meet the criteria for Major Depressive Disorder, Single Episode. However, we have a clearly identified trigger, so we also need to perform a differential diagnosis, primarily with Adjustment Disorder with Depressed Mood: here, the symptoms appear within 3 months following the stressful agent (in this case, SARS-CoV-2 infection). Unlike Major Depressive Episode, once the agent has ceased, the symptoms do not persist beyond 6 months (which we do not know because the physical symptoms causing disability have not disappeared).In addition to purely psychiatric diagnoses that we are accustomed to, we must consider a new diagnostic entity that is becoming more prevalent as the pandemic progresses, namely “long-covid” or persistent COVID.These are generally middle-aged women who, several months after infection, continue to manifest a multifactorial complex of symptoms. These symptoms persist over time, not only the classical ones but also many others that can appear during the ongoing course of the disease.
Conclusions
Beyond the purely psychiatric diagnoses we are accustomed to, we must also consider a new diagnostic entity that is becoming more prevalent as the pandemic continues to advance: Persistent COVID or ‘long-COVID.’ Generally, this condition affects middle-aged women who, several months after contracting the virus, continue to exhibit a multifactorial complex of symptoms. The most common symptoms include fatigue/asthenia (95.91%); general discomfort (95.47%); headaches (86.53%); and low mood (86.21%)
Men and women with psychosis have different courses and presentations of symptoms. Men with psychosis have an earlier onset of illness, more negative symptoms, and worse premorbid functioning. Women, on the other hand, have better social functioning and less substance abuse. Despite these evident differences, there are few studies that delve into these distinctions, especially from a subjective perspective.
Objectives
The aim of this study is to understand the differences in the perception of psychosis between men and women.
Methods
Five women and five men diagnosed with schizophrenia participated in the study. They were matched so that the age difference between them was no more than 5 years, with ages ranging from 40 to 56 years. Participants had not experienced acute decompensation of their underlying illness and had not required admission to an Acute Care Unit in the 6 months prior to inclusion in the study. Data collection was conducted through the Spanish translation of the Indiana Psychiatric Illness Interview, consisting of five parts: a narrative about their life, a narrative about the illness, questions related to how the illness has changed their life and what has not changed, the overall influence of the illness on their life, and lastly, expectations for the future.
Results
Men expressed more concerns about work (4 men versus 2 women), while women expressed more concerns about not having become mothers (3 out of 5 women, compared to one man). All participants shared experiences of isolation in intimate relationships, including romantic relationships. Regarding stigma, three women believed that people treated them like children and dismissed their opinions. However, two of them viewed this behavior from their loved ones positively. Two women discussed the impact that psychosis and medications had on their bodies and how others had reacted to these changes
Conclusions
The concerns and stigma associated with mental illness differ between genders. These differences should be taken into account when developing specific biopsychosocial treatment plans.
Pregnancy is a high-risk period for major affective disorders and can lead to a destabilizing period for our patients. Standard pharmacological strategies must be carefully evaluated due to potential teratogenic or side effects. We present a case of bipolar disorder type I with challenging-to-control maniac episodes during pregnancy, which has required Electroconvulsive Therapy for its management.
Objectives
Presenting maintenance electroconvulsive therapy (ECT) as a safe and effective therapeutic strategy during pregnancy, with the presentation of a case in which it has been administered every 3 weeks from the second trimester until the baby’s birth at 37 weeks
Methods
This concerns a 28-year-old immigrant woman, married, with a 10-year-old child. She was diagnosed with bipolar disorder type I at the age of 16 when she experienced her first manic episode in her country of origin. Subsequently, during her first pregnancy, she required hospitalization for electroconvulsive therapy (ECT) treatment, with a positive response after a single session. She remained stable for several years without maintenance pharmacological treatment or follow-up until the ninth week of her second pregnancy when she experienced a manic episode requiring hospitalization.
Results
She was initially treated with Olanzapine and Lorazepam with a positive response, but three weeks later, she was readmitted with a similar episode. These decompensations occurred almost monthly, leading to the consideration of introducing mood stabilizers after the first trimester. However, due to the patient’s severe hyperemesis gravidarum, this stabilizing treatment was ruled out due to the difficulty in controlling its blood levels and the associated risk of intoxication. During the fifth admission at the 20th week of gestation, the decision was made to initiate ECT treatment, which yielded an excellent response and subsequent maintenance.
Conclusions
The indications for electroconvulsive therapy (ECT) during pregnancy are the same as in the rest of adult patients. In individuals with a psychiatric history, it is possible for a relapse of mental illness to occur during pregnancy, although the risk is considerably higher during the postpartum period. ECT is considered an effective and safe treatment option in all three trimesters of pregnancy and the postpartum period. During the informed consent process, patients should be informed about the potential impact of ECT as well as alternative treatment options.
Contrary to classical belief, people affected by this disease are at greater risk of developing organic pathologies.This risk has a very complex origin: a greater exposure to risk factors and specific socioeconomic conditions, a high prevalence of risk behaviors, the use of antipsychotics, and a potential common genetic background. (Reynolds et al.Int. J.Neuropsychopharmacol.2021; 24 854–855, Suvisaari J et al. Curr Diab Rep. 2016 16). Multiple studies demonstrate that Schizophrenia confers a high endogenous risk of Diabetes. Before patients diagnosed with Schizophrenia start taking antipsychotics (Andreassen OA et al. Am J Psychiatry. 2017;174 616-617), they have an approximately 3 times higher risk of developing Diabetes compared to the general population. The risk increases 3.6 times after the initiation of antipsychotic treatment compared to drug naive patients(Annamalai A et al World J Diabetes. 2017 390-396)
Objectives
To study the association between Schizophrenia or other Psychotic Disorders and Diabetes Mellitus in a sample of patients diagnosed with Schizophrenia or other Psychotic Disorders.
Methods
This is a Descriptive and Cross-sectional Observational Study. Clinical Histories were reviewed and a personal or telephone interview was established to expand data related to the objectives of the study. The patients were recruited among the patients seen in the specific Severe Mental Disorder consultation who had a diagnosis of schizophrenia or other Psychotic Disorders, according to DSM 5-TR criteria.
Results
From a sample of 93 patients, 24 had Diabetes. The Prevalence of Diabetes in patients with Schizophrenia or other Psychotic Disorders was 25.8%. Of the patients without a diagnosis of Diabetes, 15 of them had values of Glycosylated Hemoglobin (HbA1c) for Prediabetes. Using the Chi-Square Test, statistically significant differences were found between the variable Main Psychiatric Medication and Diabetes. Patients treated with Clozapine, Aripiprazole and Olanzapine had a Prevalence of Diabetes of 40.9%, 33.3% and 28.5%, respectively.
Conclusions
Prevalence of Diabetes in our sample was 3.4 times higher than the 7.51% of the general population in Spain. This presumes a significant importance and impact on the health of these patients. The diabetic patients in our sample were diagnosed with Diabetes years after the diagnosis of the mental illness, which seems to indicate that the causes have to do with lifestyle, dietary habits, weight, and exposure to chronic antipsychotics. Premature death in schizophrenia has several explanations, being of special importance the development of cardiovascular disorders and Diabetes This can be due to many reasons, but it is worth highlighting the metabolic side effects of some antipsychotics and lifestyle. In this sense, it is essential to carefully monitor this group of patients.
We construct the first examples of infinite sharply 2-transitive groups which are finitely generated. Moreover, we construct such a group that has Kazhdan property (T), is simple, has exactly four conjugacy classes and we show that this number is as small as possible.
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant (B.1.1.529) rapidly replaced Delta (B.1.617.2) to become dominant in England. Our study assessed differences in transmission between Omicron and Delta using two independent data sources and methods. Omicron and Delta cases were identified through genomic sequencing, genotyping and S-gene target failure in England from 5–11 December 2021. Secondary attack rates for named contacts were calculated in household and non-household settings using contact tracing data, while household clustering was identified using national surveillance data. Logistic regression models were applied to control for factors associated with transmission for both methods. For contact tracing data, higher secondary attack rates for Omicron vs. Delta were identified in households (15.0% vs. 10.8%) and non-households (8.2% vs. 3.7%). For both variants, in household settings, onward transmission was reduced from cases and named contacts who had three doses of vaccine compared to two, but this effect was less pronounced for Omicron (adjusted risk ratio, aRR 0.78 and 0.88) than Delta (aRR 0.62 and 0.68). In non-household settings, a similar reduction was observed only in contacts who had three doses vs. two doses for both Delta (aRR 0.51) and Omicron (aRR 0.76). For national surveillance data, the risk of household clustering, was increased 3.5-fold for Omicron compared to Delta (aRR 3.54 (3.29–3.81)). Our study identified increased risk of onward transmission of Omicron, consistent with its successful global displacement of Delta. We identified a reduced effectiveness of vaccination in lowering risk of transmission, a likely contributor for the rapid propagation of Omicron.
We show, against skeptics, that however latent it may be in everyday life, the ability to reason effectively about politics can readily be activated when conditions are right. We justify a definition of deliberative reason, then develop and apply a Deliberative Reason Index (DRI) to analysis of 19 deliberative forums. DRI increases over the course of deliberation in the vast majority of cases, but the extent of this increase depends upon enabling conditions. Group building that activates deliberative norms makes the biggest difference, particularly in enabling participants to cope with complexity. Without group building, complexity becomes more difficult to surmount, and planned direct impact on policy decisions may actually impede reasoning where complexity is high. Our findings have implications beyond forum design for the staging of political discourse in the wider public sphere.
Modeling is important for guiding policy during epidemics. The objective of this work was to describe the experience of structuring a multidisciplinary collaborative network in Brazil for modeling coronavirus disease 2019 (COVID-19) to support decision-making throughout the pandemic.
Methods
Responding to a national call in June 2020 for proposals on COVID-19 mitigation projects, we established a team of investigators from public universities located in various regions throughout Brazil. The team’s main objective was to model severe acute respiratory syndrome coronavirus 2 transmission dynamics in various demographic and epidemiologic settings in Brazil using different types of models and mitigation interventions. The modeling results aimed to provide information to support policy making. This descriptive study outlines the processes, products, challenges, and lessons learned from this innovative experience.
Results
The network included 18 researchers (epidemiologists, infectious diseases experts, statisticians, and modelers) from various backgrounds, including ecology, geography, physics, and mathematics. The criteria for joining the network were having a communication channel with public health decision-makers and being involved in generating evidence for public policy. During a 24-month period, the following sub-projects were established: (i) development of a susceptible-exposed-infected-recovered-like, individual-based meta-population and Markov chain model; (ii) projection of COVID-19 transmission and impact over time with respect to cases, hospitalizations, and deaths; (iii) assessment of the impact of non-pharmacological interventions for COVID-19; (iv) evaluation of the impact of reopening schools; and (v) determining optimal strategies for COVID-19 vaccination. In addition, we mapped existing COVID-19 modeling groups nationwide and conducted a systematic review of relevant published research literature from Brazil.
Conclusions
Infectious disease modeling for guiding public health policy requires interaction between epidemiologists, public health specialists, and modelers. Communicating modeling results in a non-academic format is an additional challenge, so close interaction with policy makers is essential to ensure that the information is useful. Establishing a network of modeling groups will be useful for future disease outbreaks.
The scale of the global mental health burden indicates the inadequacy not only of current treatment options, but also the pace of the standard treatment development process. The ‘leapfrog’ trial design is a newly-developed simple Bayesian adaptive trial design with potential to accelerate treatment development. A first leapfrog trial was conducted to provide a demonstration and test feasibility, applying the method to a low-intensity internet-delivered intervention targeting anhedonia.
Methods
At the start of this online, single-blind leapfrog trial, participants self-reporting depression were randomized to an initial control arm comprising four weeks of weekly questionnaires, or one of two versions of a four-week cognitive training intervention, imagery cognitive bias modification (imagery CBM). Intervention arms were compared to control on an ongoing basis via sequential Bayesian analyses, based on a primary outcome of anhedonia at post-intervention. Results were used to eliminate and replace arms, or to promote them to become the control condition based on pre-specified Bayes factor and sample size thresholds. Two further intervention arms (variants of imagery CBM) were added into the trial as it progressed.
Results
N = 188 participants were randomized across the five trial arms. The leapfrog methodology was successfully implemented to identify a ‘winning’ version of the imagery CBM, i.e. the version most successful in reducing anhedonia, following sequential elimination of the other arms.
Conclusions
The study demonstrates feasibility of the leapfrog design and provides a foundation for its adoption as a method to accelerate treatment development in mental health. Registration: clinicaltrials.gov, NCT04791137.
Under stress, corals and foraminifera may eject or consume their algal symbionts (“bleach”), which can increase mortality. How bleaching relates to species viability over warming events is of great interest given current global warming. We use size-specific isotope analyses and abundance counts to examine photosymbiosis and population dynamics of planktonic foraminifera across the Paleocene–Eocene thermal maximum (PETM, ~56 Ma), the most severe Cenozoic global warming event. We find variable responses of photosymbiotic associations across localities and species. In the NE Atlantic (DSDP Site 401) PETM, photosymbiotic clades (acarininids and morozovellids) exhibit collapsed size-δ13C gradients indicative of reduced photosymbiosis, as also observed in Central Pacific (ODP Site 1209) and Southern Ocean (ODP Site 690) acarininids. In contrast, we find no significant loss of size-δ13C gradients on the New Jersey shelf (Millville) or in Central Pacific morozovellids. Unlike modern bleaching-induced mass mortality, populations of photosymbiont-bearing planktonic foraminifera increased in relative abundance during the PETM. Multigenerational adaptive responses, including flexibility in photosymbiont associations and excursion taxon evolution, may have allowed some photosymbiotic foraminifera to thrive. We conclude that deconvolving the effects of biology on isotope composition on a site-by-site basis is vital for environmental reconstructions.
Based on the needs assessment of the medical and non-medical departments, the Investment Committee of the Hospital de Clínicas de Porto Alegre (HCPA), a teaching hospital in Brazil, recommends on which technologies the limited financial resources should be invested. Technology inclusion requests are evaluated by the hospital's technology assessment unit. For technology replacement, we have found models to assess the criticality of medical equipment, but they were insufficient to support the decision, which involves all departments of our hospital. This study aimed to develop an automated tool to support decision making regarding investments in equipment replacement in the hospital.
Methods
A working group was set up with professionals from healthcare administration, clinical engineering and research departments. From the hospital's inventory database, we developed the tool using Google SheetsR. We have defined three departments for pilot testing of the tool: hemodynamics, laundry, and basic research. These departments represent the areas of healthcare, support services, and teaching and research in the hospital.
Results
The criticality of medical equipment is assessed based on the criteria of function, physical risk, impact, remaining equipment life cycle, intensity of use and number of corrective maintenance actions performed. For the equipment in the administrative, support and research areas, the function and physical risk criteria were replaced by the safety and by the risks to the quality of service criteria. The evaluation is carried out by a multidisciplinary team. The tool categorizes the equipment into low, medium and high criticality.
Conclusions
The tool prioritized the equipment based on objective criteria evaluated by the departments’ multidisciplinary team comprising experts who use the equipment in their activities, the department administrator and clinical engineers, and provided transparency regarding the decision-making of the hospital's Investment Committee. In 2019, the limited financial resources were invested only in the replacement of highly critical equipment. We believe the tool can be reproduced in hospitals in low and middle-income countries.
Evidence from a recent randomised controlled trial1 suggests that in severely stressed subjects with low magnesemia, supplementation with magnesium (Mg) in combination with vitamin B6 (B6) provides greater benefits than Mg alone. B6 was reported to facilitate Mg absorption and its cellular uptake and to exert synergistic effect with Mg. The current secondary analysis explored the relationship between Mg-B6 combination and erythrocyte Mg concentration, used as a biomarker of body Mg status.
Material and Methods
An 8-week, Phase IV, controlled, single-blinded, parallel-group trial (EudraCT Number 2015-003749-24) stratified by sex was conducted in adults (n = 264) with a Depression Anxiety Stress Scales - stress subscale score (DASS-42SS) > 18 and serum Mg of 0.5–0.85mmol/L, randomised 1:1 to daily oral Mg-B6 (Magne B6®, Mg 300 mg; B6 30mg) or oral Mg alone (Magnespasmyl®, Mg 300mg). Outcomes were stress score, serum Mg (mmol/L), erythrocytes Mg (mmol/L), and serum B6 (nmol/L) from baseline to Week4 and Week8. Data are given as mean(SD) values.
Results & Discussion
Baseline characteristics. Baseline magnesemia was 0.80(0.04) for both groups. Erythrocyte Mg concentration for the lower quintile of the studied population (n = 53) was 0.73–1.62, below the normal range of 1.65–2.65 in general population. The mean stress score in this subgroup was higher [29.5(6.3)], but not significantly different from that in other quintiles [lowest value: 26.1(7.6)]. Baseline B6 serum level for the lower B6 quintile (5–23), below the normal range for general population, was suggestive of possible B6 deficiency.
Treatment effects. Both treatments increased slightly but not significantly erythrocyte Mg level from baseline to Week8 [1.84(0.03) to 1.86(0.03), and 1.86(0.03) to 188(0.03), respectively for Mg + B6 and Mg groups]. Significant changes were observed in subjects with low erythrocyte Mg level at baseline (< 1.6), namely an increase of + 0.13(0.04–0.22) for Mg + B6 and + 0.17(0.08–0.25) for Mg groups, but with no difference between treatments. Moreover, Mg + B6 supplementation led to a significant change (p < 0.0001) in serum B6 level between baseline and Wk8 [55.9(4.8) to 370.9(11.3)], as compared to Mg alone [51.9(4.8) to 51.5(11.3)].
In conclusion, both treatments significantly increased erythrocyte Mg in subjects with low Mg status. B6 supplementation did not lead to further increase in erythrocyte Mg level. We have previously shown that severely stressed population benefits from B6 supplementation in combination with Mg, however, the mechanism of the interaction between Mg and B6 remains to be elucidated.
In recent years, research has been focusing on strategies to counteract inflammatory processes and age-related diseases(1). During ageing, a low-grade systemic inflammation is often associated to an altered intestinal permeability (IP) a condition that has been shown to promote inflammation possibly through the translocation of dietary and bacterial factors into the blood stream that activates the immune system(2).In this regard, dietary pattern and environmental factors could play a fundamental role because of their potential ability to modulate inflammation, IP and the gut microbial ecosystem (GME). Moreover, it has been hypothesized that bioactive compounds such as polyphenols may affect IP and GME(3).The MaPLE project (Microbiome mAnipulation through Polyphenols for managing gut Leakiness in the Elderly) aimed to investigate the hypothesis that a polyphenol-rich diet can improve IP condition in a target population with beneficial changes at intestine and systemic level. To this aim, a randomised, controlled, cross-over dietary intervention study (8-week polyphenol-rich diet versus 8-week control diet, separated by a wash-out period) was carried out in a group of older subjects (> 60 years) living in a well-controlled setting (i.e. nursing home). Markers related with IP, inflammation, oxidative stress, vascular function and intestinal microbial ecosystem were investigated in serum, urine and/or fecal samples. Moreover, blood bacteria DNAemia, and serum/urine metabolomics has been assessed. Moreover, a consistent nutritional evaluation of the standard menu (provided by the nursing home) and of weighed food diaries was performed, providing also data on actual polyphenol intake during the intervention. The results show there were higher levels of IP in the older subjects, and that the polyphenol-enriched diet changed the levels of serum zonulin, a marker of IP. In addition, an association between zonulin and blood bacterial load was demonstrated. Ongoing in vitro and in vivo experiments are exploring the potential effects of different polyphenols on IP and the mechanisms involved. The MaPLE project will generate new data to improve the understanding on the role of polyphenols in the modulation of intestinal microbiome and its interactions with the host.
Positive symptoms are a useful predictor of aggression in schizophrenia. Although a similar pattern of abnormal brain structures related to both positive symptoms and aggression has been reported, this observation has not yet been confirmed in a single sample.
Method
To study the association between positive symptoms and aggression in schizophrenia on a neurobiological level, a prospective meta-analytic approach was employed to analyze harmonized structural neuroimaging data from 10 research centers worldwide. We analyzed brain MRI scans from 902 individuals with a primary diagnosis of schizophrenia and 952 healthy controls.
Results
The result identified a widespread cortical thickness reduction in schizophrenia compared to their controls. Two separate meta-regression analyses revealed that a common pattern of reduced cortical gray matter thickness within the left lateral temporal lobe and right midcingulate cortex was significantly associated with both positive symptoms and aggression.
Conclusion
These findings suggested that positive symptoms such as formal thought disorder and auditory misperception, combined with cognitive impairments reflecting difficulties in deploying an adaptive control toward perceived threats, could escalate the likelihood of aggression in schizophrenia.