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1.
J Ment Health ; : 1-10, 2024 Apr 08.
Artículo en Inglés | MEDLINE | ID: mdl-38588708

RESUMEN

BACKGROUND: Smoking is a major contributor to morbidity and mortality among individuals with serious mental illness (SMI) and social networks may play an important role in smoking behaviors. AIMS: Our objectives were to (1) describe the network characteristics of adults with SMI who smoke tobacco (2) explore whether network attributes were associated with nicotine dependence. METHODS: We performed a secondary analysis of baseline data from a tobacco smoking cessation intervention trial among 192 participants with SMI. A subgroup (n = 75) completed questions on the characteristics of their social network members. The network characteristics included network composition (e.g. proportion who smoke) and network structure (e.g. density of connections between members). We used multilevel models to examine associations with nicotine dependence. RESULTS: Participant characteristics included: a mean age 50 years, 49% women, 48% Black, and 41% primary diagnosis of schizophrenia/schizoaffective disorder. The median personal network proportion of active smokers was 22%, active quitters 0%, and non-smokers 53%. The density of ties between actively smoking network members was greater than between non-smoking members (55% vs 43%, p = .02). Proportion of network smokers was not associated with nicotine dependence. CONCLUSIONS: We identified potential social network challenges and assets to smoking cessation and implications for network interventions among individuals with SMI.

2.
Dev Neurosci ; 45(6): 349-360, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37734326

RESUMEN

Complex brain disorders like schizophrenia may have multifactorial origins related to mis-timed heritable and environmental factors interacting during neurodevelopment. Infections, inflammation, and autoimmune diseases are over-represented in schizophrenia leading to immune system-centered hypotheses. Complement component C4 is genetically and neurobiologically associated with schizophrenia, and its dual activity peripherally and in the brain makes it an exceptional target for biomarker development. Studies to evaluate the biomarker potential of plasma or serum C4 in schizophrenia do so to understand how peripheral C4 might reflect central nervous system-derived neuroinflammation, synapse pruning, and other mechanisms. This effort, however, has produced mostly conflicting results, with peripheral C4 sometimes elevated, reduced, or unchanged between comparison groups. We undertook a pilot biomarker development study to systematically identify sociodemographic, genetic, and immune-related variables (autoimmune, infection-related, gastrointestinal, inflammatory), which may be associated with plasma C4 levels in schizophrenia (SCH; n = 335) and/or in nonpsychiatric comparison subjects (NCs; n = 233). As with previously inconclusive studies, we detected no differences in plasma C4 levels between SCH and NCs. In contrast, levels of general inflammation, C-reactive protein (CRP), were significantly elevated in SCH compared to NCs (ANOVA, F = 20.74, p < 0.0001), suggestive that plasma C4 and CRP may reflect different sources or causes of inflammation. In multivariate regressions of C4 gene copy number variants, plasma C4 levels were correlated only for C4A (not C4B, C4L, C4S) and only in NCs (R Coeff = 0.39, CI = 0.01-0.77, R2 = 0.18, p < 0.01; not SCH). Other variables associated with plasma C4 levels only in NCs included sex, double-stranded DNA IgG, tissue-transglutaminase (TTG) IgG, and cytomegalovirus IgG. Toxoplasma gondii IgG was the only variable significantly correlated with plasma C4 in SCH but not in NCs. Many variables were associated with plasma C4 in both groups (body mass index, race, CRP, N-methyl-D-aspartate receptor (NMDAR) NR2 subunit IgG, TTG IgA, lipopolysaccharide-binding protein (LBP), and soluble CD14 (sCD14). While the direction of most C4 associations was positive, autoimmune markers tended to be inverse, and associated with reduced plasma C4 levels. When NMDAR-NR2 autoantibody-positive individuals were removed, plasma C4 was elevated in SCH versus NCs (ANOVA, F = 5.16, p < 0.02). Our study was exploratory and confirmation of the many variables associated with peripheral C4 requires replication. Our preliminary results point toward autoimmune factors and exposure to the pathogen, T. gondii, as possibly significant contributors to variability of total C4 protein levels in plasma of individuals with schizophrenia.


Asunto(s)
Complemento C4 , Esquizofrenia , Humanos , Complemento C4/genética , Esquizofrenia/diagnóstico , Inflamación , Biomarcadores , Inmunoglobulina G
3.
J Gen Intern Med ; 36(2): 500-505, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-32869192

RESUMEN

Many of the most pressing health issues in the USA and worldwide require complex, multi-faceted solutions. Delivery of such solutions is often complicated by the need to reach and engage vulnerable populations facing multiple barriers to care. While the fields of quality improvement and implementation science have made valuable gains in the development and spread of individual strategies to improve evidence-based practice delivery, models for coordinated deployment of numerous strategies to simultaneously implement multiple evidence-based interventions in vulnerable populations are lacking. In this Perspective, we describe a model for this type of comprehensive research-practice translation effort: the Johns Hopkins ALACRITY Center for Health and Longevity in Mental Illness, which is focused on reducing premature mortality in the population with serious mental illness. We describe the Center's conceptual framework, which is built upon an integrated set of quality improvement and implementation science frameworks, provide an overview of the Center's organizational structure and core research-practice translation activities, and discuss our vision for how the Center may evolve over time. Lessons learned from this Center's efforts could inform models to address other critical health issues in vulnerable populations that require multi-component solutions at the policy, system, provider, and patient levels.


Asunto(s)
Longevidad , Trastornos Mentales , Humanos , Trastornos Mentales/epidemiología , Trastornos Mentales/terapia
4.
Mol Psychiatry ; 25(3): 560-571, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-30022042

RESUMEN

Mania is a serious neuropsychiatric condition associated with significant morbidity and mortality. Previous studies have suggested that environmental exposures can contribute to mania pathogenesis. We measured dietary exposures in a cohort of individuals with mania and other psychiatric disorders as well as in control individuals without a psychiatric disorder. We found that a history of eating nitrated dry cured meat but not other meat or fish products was strongly and independently associated with current mania (adjusted odds ratio 3.49, 95% confidence interval (CI) 2.24-5.45, p < 8.97 × 10-8). Lower odds of association were found between eating nitrated dry cured meat and other psychiatric disorders. We further found that the feeding of meat preparations with added nitrate to rats resulted in hyperactivity reminiscent of human mania, alterations in brain pathways that have been implicated in human bipolar disorder, and changes in intestinal microbiota. These findings may lead to new methods for preventing mania and for developing novel therapeutic interventions.


Asunto(s)
Manía/fisiopatología , Productos de la Carne/efectos adversos , Nitratos/efectos adversos , Adulto , Animales , Trastorno Bipolar/etiología , Trastorno Bipolar/metabolismo , Trastorno Bipolar/fisiopatología , Encéfalo/fisiopatología , Femenino , Humanos , Hipercinesia/metabolismo , Masculino , Manía/etiología , Manía/metabolismo , Productos de la Carne/análisis , Ratas , Ratas Sprague-Dawley
5.
Mol Psychiatry ; 25(1): 194-205, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-30127472

RESUMEN

Clinical studies frequently report that patients with major mental illness such as schizophrenia and bipolar disorder have co-morbid physical conditions, suggesting that systemic alterations affecting both brain and peripheral tissues might underlie the disorders. Numerous studies have reported elevated levels of anti-Toxoplasma gondii (T. gondii) antibodies in patients with major mental illnesses, but the underlying mechanism was unclear. Using multidisciplinary epidemiological, cell biological, and gene expression profiling approaches, we report here multiple lines of evidence suggesting that a major mental illness-related susceptibility factor, Disrupted in schizophrenia (DISC1), is involved in host immune responses against T. gondii infection. Specifically, our cell biology and gene expression studies have revealed that DISC1 Leu607Phe variation, which changes DISC1 interaction with activating transcription factor 4 (ATF4), modifies gene expression patterns upon T. gondii infection. Our epidemiological data have also shown that DISC1 607 Phe/Phe genotype was associated with higher T. gondii antibody levels in sera. Although further studies are required, our study provides mechanistic insight into one of the few well-replicated serological observations in major mental illness.


Asunto(s)
Interacciones Huésped-Patógeno/fisiología , Esquizofrenia/inmunología , Esquizofrenia/microbiología , Adulto , Animales , Trastorno Bipolar/genética , Trastorno Bipolar/inmunología , Trastorno Bipolar/microbiología , Encéfalo/metabolismo , Femenino , Expresión Génica/genética , Perfilación de la Expresión Génica , Genotipo , Humanos , Masculino , Trastornos Mentales/genética , Trastornos Mentales/inmunología , Trastornos Mentales/microbiología , Proteínas del Tejido Nervioso/genética , Esquizofrenia/genética , Transducción de Señal/fisiología , Toxoplasma/inmunología , Toxoplasma/patogenicidad
6.
Eur Arch Psychiatry Clin Neurosci ; 270(7): 829-839, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32219505

RESUMEN

Common infectious agents, such as Toxoplasma gondii (T. gondii) and several human herpes viruses, have been linked to increased risk of self-harm. The aim of this study was to investigate the associations between self-harm and seropositivity to T. gondii, Epstein-Barr virus (EBV), Herpes Simplex virus Type 1 (HSV-1), and Cytomegalovirus (CMV). IgM and IgG antibodies to these infections were measured in the Health 2000 project nationally representative of the whole Finnish adult population, and 6250 participants, age 30 and over, were followed for 15 years via registers. In addition, lifetime suicidal ideation and suicide attempts based on medical records and interview were assessed within a subsample of 694 participants screened to a substudy for possible psychotic symptoms or as controls. Among the 6250 participants, 14 individuals died of suicide and an additional 4 individuals had a diagnosis of intentional self-harm during follow-up. Serological evidence of lifetime or acute infections was not found to be associated with these suicidal outcomes. However, in the subsample, those seropositive for CMV had fewer suicide attempts compared to those seronegative, adjusting for gender, age, educational level, childhood family size, regional residence, CRP, and screen status (OR for multiple attempts = 0.40, 95% confidence interval 0.20‒0.83, p = 0.014). To conclude, common infections were not associated with risk of death by suicide or with self-harm diagnoses at a 15-year follow-up in the general population sample. Our finding of an increased number of suicide attempts among persons seronegative for CMV calls for further research.


Asunto(s)
Infecciones por Herpesviridae/epidemiología , Trastornos Mentales/epidemiología , Sistema de Registros , Ideación Suicida , Intento de Suicidio/estadística & datos numéricos , Toxoplasmosis/epidemiología , Adulto , Anciano , Anticuerpos Antivirales/sangre , Estudios Transversales , Femenino , Finlandia/epidemiología , Humanos , Inmunoglobulina G/sangre , Inmunoglobulina M/sangre , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Riesgo , Toxoplasma/inmunología
7.
Psychol Med ; 49(2): 243-249, 2019 01.
Artículo en Inglés | MEDLINE | ID: mdl-29552990

RESUMEN

BACKGROUND: Depression can impair the immunogenicity of vaccine administration in adults. Whereas many vaccinations are administered in childhood, it is not known whether adolescent or adult onset depression is associated with impairments in the maintenance of protection of childhood vaccines. This study tested the hypothesis that individuals with adolescent or adult onset mood disorders would display compromised immunity to measles, a target of childhood vaccination. METHODS: IgG antibodies to measles were quantified using a solid phase immunoassay in volunteers with bipolar disorder (BD, n = 64, mean age of onset = 16.6 ± 5.6), currently depressed individuals with major depressive disorder (cMDD, n = 85, mean age of onset = 17.9 ± 7.0), remitted individuals with a history of MDD (rMDD, n = 82, mean age of onset = 19.2 ± 8.6), and non-depressed comparison controls (HC, n = 202), all born after the introduction of the measles vaccine in the USA in 1963. RESULTS: Relative to HC, both the cMDD group (p = 0.021, adjusted odds ratios (OR) = 0.47, confidence interval (CI) = 0.24-0.90), and the rMDD group (p = 0.038, adjusted OR = 0.50, CI = 0.26-0.97) were less likely to test seropositive for measles. Compared with unmedicated MDD participants, currently medicated MDD participants had a longer lifetime duration of illness and were less likely to test seropositive for measles. CONCLUSIONS: Individuals with adolescent or adult onset MDD are less likely to test seropositive for measles. Because lower IgG titers are associated with increased risk of measles infection, MDD may increase the risk and severity of infection possibly because of impaired maintenance of vaccine-related protection from measles.


Asunto(s)
Trastorno Bipolar/inmunología , Trastorno Depresivo Mayor/inmunología , Vacuna Antisarampión/inmunología , Sarampión/inmunología , Adulto , Edad de Inicio , Anticuerpos Antivirales/sangre , Trastorno Bipolar/sangre , Trastorno Depresivo Mayor/sangre , Femenino , Humanos , Inmunoglobulina G/inmunología , Masculino , Sarampión/sangre , Persona de Mediana Edad , Inducción de Remisión , Adulto Joven
8.
Brain Behav Immun ; 69: 480-485, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29355820

RESUMEN

BACKGROUND: Earlier studies have documented an association between cytomegalovirus and cognitive impairment, but results have been inconsistent. Few studies have investigated the association of cytomegalovirus and Epstein-Barr virus with cognitive decline longitudinally. Our aim was to examine whether cytomegalovirus and Epstein-Barr virus are associated with cognitive decline in adults. METHOD: The study sample is from the Finnish Health 2000 Survey (BRIF8901, n = 7112), which is representative of the Finnish adult population. The sample was followed up after 11 years in the Health 2011 Survey. In addition, persons with dementia were identified from healthcare registers. RESULTS: In the Finnish population aged 30 and over, the seroprevalence of cytomegalovirus was estimated to be 84% and the seroprevalence of Epstein-Barr virus 98%. Seropositivity of the viruses and antibody levels were mostly not associated with cognitive performance. In the middle-aged adult group, cytomegalovirus serointensity was associated with impaired performance in verbal learning. However, the association disappeared when corrected for multiple testing. No interactions between infection and time or between the two infections were significant when corrected for multiple testing. Seropositivity did not predict dementia diagnosis. CONCLUSIONS: The results suggest that adult levels of antibodies to cytomegalovirus and Epstein-Barr virus may not be associated with a significant decline in cognitive function or with dementia at population level.


Asunto(s)
Cognición/fisiología , Citomegalovirus/aislamiento & purificación , Demencia/virología , Herpesvirus Humano 4/aislamiento & purificación , Adulto , Anciano , Anciano de 80 o más Años , Demencia/epidemiología , Femenino , Finlandia , Estudios de Seguimiento , Encuestas Epidemiológicas , Humanos , Masculino , Persona de Mediana Edad , Pruebas Neuropsicológicas , Riesgo , Estudios Seroepidemiológicos
9.
J Clin Psychopharmacol ; 38(4): 317-326, 2018 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-29912799

RESUMEN

PURPOSE/BACKGROUND: Prolactin-related adverse effects contribute to nonadherence and adverse health consequences, particularly in women with severe mental illness. Treating these adverse effects may improve treatment acceptability, adherence, and long-term outcomes. METHODS/PROCEDURES: Premenopausal women with a Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision diagnosis of schizophrenia, schizoaffective disorder, or bipolar disorder were recruited for a randomized, double-blind, placebo-controlled 16-week trial of adjunct aripiprazole (5-15 mg/d). Participants had elevated prolactin (>24 ng/mL) and were experiencing galactorrhea, amenorrhea, oligomenorrhea, or sexual dysfunction on a prolactin-elevating antipsychotic. Participants were evaluated biweekly for prolactin elevation and galactorrhea and completed a menstrual diary review. Psychiatric symptoms and adverse effects were closely monitored. FINDINGS/RESULTS: Forty-six women were randomized (n = 25 aripiprazole, n = 21 placebo). Thirty-seven completed at least 8 weeks of the study (n = 20 [80%] aripiprazole and n = 17 [81%] placebo). Aripiprazole (mean dose, 11.7 ± 2.4 mg/d) was effective for lowering prolactin relative to placebo (P = 0.04). In addition, 45% (9/20) of the aripiprazole group had a normalized prolactin (<24 mg/mL) compared with 12% (2/17) of the placebo group (P = 0.028). Galactorrhea resolved in 77% (10/13) of the aripiprazole-treated participants compared with 33% (4/12) in the placebo group (P = 0.028). Normalization of sexual function (<16 on the Arizona Sexual Experience Scale) occurred in 50% on aripiprazole (7/14) versus 9% (1/11) on placebo (P = 0.030). No differences between groups in symptoms or adverse effects were noted. Overall, women rated a mean score of 4.6 ± 0.6 on a 5-point Likert scale for sexual function improvement, suggesting their particular satisfaction with improvement in this domain. IMPLICATIONS/CONCLUSIONS: Building upon prior studies, this rigorous evaluation confirms the utility of adjunctive aripiprazole as a strategy for improving prolactin and managing prolactin-related adverse effects in premenopausal women with psychosis.


Asunto(s)
Antipsicóticos/uso terapéutico , Aripiprazol/uso terapéutico , Quimioterapia Combinada/métodos , Premenopausia/efectos de los fármacos , Prolactina/sangre , Trastornos Psicóticos/tratamiento farmacológico , Adulto , Amenorrea/inducido químicamente , Amenorrea/prevención & control , Antipsicóticos/efectos adversos , Aripiprazol/administración & dosificación , Método Doble Ciego , Femenino , Galactorrea/inducido químicamente , Galactorrea/prevención & control , Humanos , Cumplimiento de la Medicación , Oligomenorrea/inducido químicamente , Oligomenorrea/prevención & control , Calidad de Vida
10.
Bipolar Disord ; 20(7): 614-621, 2018 11.
Artículo en Inglés | MEDLINE | ID: mdl-29693757

RESUMEN

OBJECTIVE: Immunological abnormalities play a role in the pathophysiology of mania and have been associated with relapse. Probiotic organisms such as Lactobacilli and Bifidobacteria modulate inflammation in humans and animal models. The trial examined whether the administration of probiotic organisms prevents psychiatric rehospitalizations in patients recently discharged following hospitalization for mania. METHODS: Patients hospitalized for mania (N = 66) were randomized after discharge to receive 24 weeks of adjunctive probiotics (Lactobacillus rhamnosus strain GG and Bifidobacterium animalis subsp. lactis strain Bb12) or adjunctive placebo in a parallel two-group design format. The effect of treatment group on the risk of rehospitalization was calculated using Cox regression models. The modulating effect of systemic inflammation was measured employing an inflammation score based on immunoglobulin levels directed at previously defined antigens. RESULTS: During the 24-week observation period there were a total of 24 rehospitalizations in the 33 individuals who received placebo and eight rehospitalizations in the 33 individuals who received the probiotics (z = 2.63, P = .009). Hazard functions indicated that the administration of the probiotics was associated with a significant advantage in time to all psychiatric rehospitalizations (hazard ratio [HR] = 0.26, 95% confidence interval [CI] 0.10, .69; P = .007). Probiotic treatment also resulted in fewer days rehospitalized (mean 8.3 vs 2.8 days for placebo and probiotic treatment, respectively; χ2  = 5.17, P = .017). The effect of the probiotic treatment on the prevention of rehospitalization was increased in individuals with elevated levels of systemic inflammation at baseline. CONCLUSION: Probiotic supplementation is associated with a lower rate of rehospitalization in patients who have been recently discharged following hospitalization for mania.


Asunto(s)
Bifidobacterium animalis/fisiología , Trastorno Bipolar , Lacticaseibacillus rhamnosus/fisiología , Readmisión del Paciente/estadística & datos numéricos , Probióticos/administración & dosificación , Adulto , Trastorno Bipolar/diagnóstico , Trastorno Bipolar/inmunología , Trastorno Bipolar/terapia , Suplementos Dietéticos , Método Doble Ciego , Femenino , Hospitalización/estadística & datos numéricos , Humanos , Inflamación/inmunología , Inflamación/microbiología , Masculino , Persona de Mediana Edad , Evaluación de Resultado en la Atención de Salud
11.
J Nerv Ment Dis ; 206(3): 173-178, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29474231

RESUMEN

Persons with serious mental illness are at high risk for suicide, but this outcome is difficult to predict. Serological markers may help to identify suicide risk. We prospectively assessed 733 persons with a schizophrenia spectrum disorder, 483 with bipolar disorder, and 76 with major depressive disorder for an average of 8.15 years. The initial evaluation consisted of clinical and demographic data as well as a blood samples from which immunoglobulin G antibodies to herpes viruses and Toxoplasma gondii were measured. Suicide was determined using data from the National Death Index. Cox proportional hazard regression models examined the role of baseline variables on suicide outcomes. Suicide was associated with male sex, divorced/separated status, Caucasian race, and elevated levels of antibodies to Cytomegalovirus (CMV). Increasing levels of CMV antibodies were associated with increasing hazard ratios for suicide. The identification of serological variables associated with suicide might provide more personalized methods for suicide prevention.


Asunto(s)
Trastorno Bipolar/psicología , Trastorno Depresivo Mayor/psicología , Esquizofrenia/sangre , Suicidio/psicología , Adolescente , Adulto , Anciano , Anticuerpos Antiprotozoarios/sangre , Anticuerpos Antivirales/sangre , Citomegalovirus/inmunología , Herpesviridae/inmunología , Humanos , Inmunoglobulina G/sangre , Estado Civil , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Factores de Riesgo , Psicología del Esquizofrénico , Factores Sexuales , Suicidio/estadística & datos numéricos , Toxoplasma/inmunología , Adulto Joven
12.
Brain Behav Immun ; 62: 46-52, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-28003152

RESUMEN

Schizophrenia and bipolar disorder are serious neuropsychiatric disorders of uncertain etiology. Recent studies indicate that immune activation may contribute to the etiopathogenesis of these disorders. Numerous studies in animal models indicate that the mucosal microbiome may influence cognition and behavior by altering the functioning of the immune system. It is thus likely that the microbiome plays a role in human psychiatric disorders. The study of immune alterations and the microbiome in schizophrenia and bipolar disorder is in its infancy. Two recent investigations of the oro-pharyngeal microbiota in schizophrenia found differences between cases and controls. Other studies have found increased gastrointestinal inflammation in schizophrenia and bipolar disorder based on measures of microbial translocation. Several studies have also found an association between the receipt of antibiotics and an increased incidence of psychiatric disorders, perhaps due to alterations in the microbiome. Studies to characterize the intestinal microbiome of individuals with these disorders are in progress. The ultimate test of the role of the microbiome and immune-mediated pathology in schizophrenia and bipolar disorder will come from clinical trials of therapeutic agents which alter gut microbiota or gastrointestinal inflammation. The successful development of such modalities would represent a novel strategy to prevent and treat serious psychiatric disorders.


Asunto(s)
Trastorno Bipolar/inmunología , Inmunidad/fisiología , Microbiota/inmunología , Esquizofrenia/inmunología , Trastorno Bipolar/microbiología , Humanos , Esquizofrenia/microbiología
13.
Brain Behav Immun ; 62: 41-45, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-27871802

RESUMEN

The molecules and pathways of the gut-brain axis represent new targets for developing methods to diagnose and treat psychiatric disorders. Manipulation of the gut microbiome with probiotics may be a therapeutic strategy with the potential to relieve gastrointestinal (GI) comorbidities and improve psychiatric symptoms. Candida albicans and Saccharomyces cerevisiae, commensal yeast species, can be imbalanced in the unhealthy human microbiome, and these fungal exposures were previously found elevated in schizophrenia. In a longitudinal, double-blind, placebo-controlled, pilot investigation of 56 outpatients with schizophrenia, we examined the impact of probiotic treatment on yeast antibody levels, and the relationship between treatment and antibody levels on bowel discomfort and psychiatric symptoms. We found that probiotic treatment significantly reduced C. albicans antibodies over the 14-week study period in males, but not in females. Antibody levels of S. cerevisiae were not altered in either treatment group. The highest levels of bowel discomfort over time occurred in C. albicans-seropositive males receiving the placebo. We observed trends towards improvement in positive psychiatric symptoms in males treated with probiotics who were seronegative for C. albicans. Results from this pilot study hint at an association of C. albicans seropositivity with worse positive psychiatric symptoms, which was confirmed in a larger cohort of 384 males with schizophrenia. In conclusion, the administration of probiotics may help normalize C. albicans antibody levels and C. albicans-associated gut discomfort in many male individuals. Studies with larger sample sizes are warranted to address the role of probiotics in correcting C. albicans-associated psychiatric symptoms.


Asunto(s)
Anticuerpos Antibacterianos/aislamiento & purificación , Candida albicans/inmunología , Microbioma Gastrointestinal/efectos de los fármacos , Tracto Gastrointestinal/microbiología , Probióticos/administración & dosificación , Esquizofrenia/microbiología , Adolescente , Adulto , Anciano , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Proyectos Piloto , Resultado del Tratamiento , Adulto Joven
14.
Proc Natl Acad Sci U S A ; 111(45): 16106-11, 2014 Nov 11.
Artículo en Inglés | MEDLINE | ID: mdl-25349393

RESUMEN

Chloroviruses (family Phycodnaviridae) are large DNA viruses known to infect certain eukaryotic green algae and have not been previously shown to infect humans or to be part of the human virome. We unexpectedly found sequences homologous to the chlorovirus Acanthocystis turfacea chlorella virus 1 (ATCV-1) in a metagenomic analysis of DNA extracted from human oropharyngeal samples. These samples were obtained by throat swabs of adults without a psychiatric disorder or serious physical illness who were participating in a study that included measures of cognitive functioning. The presence of ATCV-1 DNA was confirmed by quantitative PCR with ATCV-1 DNA being documented in oropharyngeal samples obtained from 40 (43.5%) of 92 individuals. The presence of ATCV-1 DNA was not associated with demographic variables but was associated with a modest but statistically significant decrease in the performance on cognitive assessments of visual processing and visual motor speed. We further explored the effects of ATCV-1 in a mouse model. The inoculation of ATCV-1 into the intestinal tract of 9-11-wk-old mice resulted in a subsequent decrease in performance in several cognitive domains, including ones involving recognition memory and sensory-motor gating. ATCV-1 exposure in mice also resulted in the altered expression of genes within the hippocampus. These genes comprised pathways related to synaptic plasticity, learning, memory formation, and the immune response to viral exposure.


Asunto(s)
Conducta Animal , Chlorella/virología , Cognición , Laringe/virología , Memoria , Mariposas Nocturnas/virología , Phycodnaviridae , Animales , Femenino , Humanos , Masculino , Ratones
15.
N Engl J Med ; 368(17): 1594-602, 2013 Apr 25.
Artículo en Inglés | MEDLINE | ID: mdl-23517118

RESUMEN

BACKGROUND: Overweight and obesity are epidemic among persons with serious mental illness, yet weight-loss trials systematically exclude this vulnerable population. Lifestyle interventions require adaptation in this group because psychiatric symptoms and cognitive impairment are highly prevalent. Our objective was to determine the effectiveness of an 18-month tailored behavioral weight-loss intervention in adults with serious mental illness. METHODS: We recruited overweight or obese adults from 10 community psychiatric rehabilitation outpatient programs and randomly assigned them to an intervention or a control group. Participants in the intervention group received tailored group and individual weight-management sessions and group exercise sessions. Weight change was assessed at 6, 12, and 18 months. RESULTS: Of 291 participants who underwent randomization, 58.1% had schizophrenia or a schizoaffective disorder, 22.0% had bipolar disorder, and 12.0% had major depression. At baseline, the mean body-mass index (the weight in kilograms divided by the square of the height in meters) was 36.3, and the mean weight was 102.7 kg (225.9 lb). Data on weight at 18 months were obtained from 279 participants. Weight loss in the intervention group increased progressively over the 18-month study period and differed significantly from the control group at each follow-up visit. At 18 months, the mean between-group difference in weight (change in intervention group minus change in control group) was -3.2 kg (-7.0 lb, P=0.002); 37.8% of the participants in the intervention group lost 5% or more of their initial weight, as compared with 22.7% of those in the control group (P=0.009). There were no significant between-group differences in adverse events. CONCLUSIONS: A behavioral weight-loss intervention significantly reduced weight over a period of 18 months in overweight and obese adults with serious mental illness. Given the epidemic of obesity and weight-related disease among persons with serious mental illness, our findings support implementation of targeted behavioral weight-loss interventions in this high-risk population. (Funded by the National Institute of Mental Health; ACHIEVE ClinicalTrials.gov number, NCT00902694.).


Asunto(s)
Terapia Conductista , Trastornos Mentales/complicaciones , Obesidad/terapia , Pérdida de Peso , Adulto , Índice de Masa Corporal , Femenino , Humanos , Masculino , Persona de Mediana Edad , Obesidad/psicología , Sobrepeso/psicología , Sobrepeso/terapia , Cooperación del Paciente/estadística & datos numéricos
16.
Bipolar Disord ; 18(5): 404-9, 2016 08.
Artículo en Inglés | MEDLINE | ID: mdl-27425597

RESUMEN

OBJECTIVES: We have preciously documented that many individuals with acute mania have immune activation. However, the sources of immune activation have not been identified. We investigated whether individuals hospitalized with acute mania have evidence of bacterial infections as determined by the prescription of systemic antimicrobial agents. METHODS: We assessed the recent prescription of systemic antimicrobial medications and the site of presumed bacterial infection in 234 individuals hospitalized for acute mania in either an inpatient unit or a day hospital. We also assessed individuals hospitalized for other psychiatric disorders (n=368) and controls (n=555). We employed logistic regression models to compare the rates of antibiotic prescription in individuals with the different diagnoses, employing demographic variables as covariates. RESULTS: We found that individuals hospitalized with acute mania had a substantially increased rate of recent antimicrobial prescription, defined as exposure within three days of ascertainment (adjusted odds ratio=5.5, 95% confidence interval: 2.2-14.1, P<.0002). Overall, a total of 18 of the 234 (7.7%) individuals hospitalized for acute mania were prescribed antibiotics as opposed to seven of 555 (1.3%) controls. The prescription of antibiotics was associated with being on an inpatient unit as opposed to being in the day hospital, and having increased mania symptom severity but not with other clinical ratings, demographic variables, or psychiatric medications. Hospitalization for other psychiatric disorders was not associated with the recent prescription of antimicrobial medications. The urinary tract was the most common site of infection in women, while the respiratory tract and mucosal surfaces were the most common sites in men. CONCLUSIONS: Individuals hospitalized with acute mania have a markedly increased rate of bacterial infections, as evidenced by the recent prescription of antimicrobial agents. The prevention and effective treatment of bacterial infections may be important interventions for the management of individuals with mania.


Asunto(s)
Antiinfecciosos/uso terapéutico , Infecciones Bacterianas , Trastorno Bipolar , Adulto , Infecciones Bacterianas/complicaciones , Infecciones Bacterianas/diagnóstico , Infecciones Bacterianas/tratamiento farmacológico , Infecciones Bacterianas/inmunología , Trastorno Bipolar/diagnóstico , Trastorno Bipolar/etiología , Trastorno Bipolar/inmunología , Trastorno Bipolar/terapia , Femenino , Hospitalización/estadística & datos numéricos , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Medicamentos bajo Prescripción/uso terapéutico , Escalas de Valoración Psiquiátrica , Estadística como Asunto , Resultado del Tratamiento
17.
Community Ment Health J ; 52(4): 416-23, 2016 May.
Artículo en Inglés | MEDLINE | ID: mdl-26602772

RESUMEN

Peer support is an important component of services for persons with psychiatric illness but the experience of peer mentors is not well understood. This study explored the experiences of peer mentors, all former smokers and persons with psychiatric illness, who provided smoking cessation counseling as part of a 6 month professionally-led intervention. Data was obtained from 383 contact log entries and in-depth interviews with eight peer mentors. Qualitative analysis indicated that mentor roles were unexpectedly varied beyond the focus on smoking cessation. Of the two aspects of "peer-ness," shared smoking history was more prominent, while the shared experience of psychiatric illness was sometimes overlooked. Peer mentors experienced multiple challenges trying to help participants to change their smoking behaviors. Nonetheless, they described their experience as personally rewarding. Future interventions may be improved by anticipating peer mentor role complexity and the inherent tension between providing person-centered support and promoting behavior change.


Asunto(s)
Trastornos Mentales/psicología , Mentores/psicología , Cese del Hábito de Fumar/psicología , Adulto , Femenino , Promoción de la Salud/métodos , Humanos , Relaciones Interpersonales , Trastornos Mentales/terapia , Persona de Mediana Edad , Cese del Hábito de Fumar/métodos , Adulto Joven
18.
Bipolar Disord ; 17(4): 409-14, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25425421

RESUMEN

OBJECTIVE: Immunologic abnormalities have been found in bipolar disorder but pentraxin 3, a marker of innate immunity, has not been studied in this population. METHODS: Levels of pentraxin 3 were measured in individuals with bipolar disorder, schizophrenia, and non-psychiatric controls. Linear regression models were used to compare the pentraxin 3 levels in each of the psychiatric groups to that in the control group, adjusting for demographic and clinical variables. Logistic regression models were used to calculate the odds ratios associated with levels of pentraxin 3 which differed from specified levels of the control group. RESULTS: The sample consisted of 831 individuals: 256 with bipolar disorder, 309 with schizophrenia, and 266 without a psychiatric disorder. The levels of pentraxin 3 in the bipolar disorder, but not in the schizophrenia, group were significantly lower than those of controls, adjusting for age, gender, race, maternal education, smoking status, and body mass index (t = -3.78, p < 0.001). The individuals with bipolar disorder also had significantly increased odds of having low levels of pentraxin 3 relative to both the 10th and 25th percentile level of the controls and significantly decreased odds of having a level greater than the 75th and the 90th percentile level of the controls, adjusting for the same covariates. CONCLUSIONS: Individuals with bipolar disorder have low levels of pentraxin 3 which may reflect impaired innate immunity. An increased understanding of the role of innate immunity in the etiopathogenesis of bipolar disorder might lead to new modalities for the diagnosis and treatment of this disorder.


Asunto(s)
Biomarcadores/sangre , Trastorno Bipolar/inmunología , Proteína C-Reactiva/análisis , Inmunidad Innata/inmunología , Componente Amiloide P Sérico/análisis , Adulto , Trastorno Bipolar/diagnóstico , Trastorno Bipolar/psicología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Valores de Referencia , Esquizofrenia/diagnóstico , Esquizofrenia/inmunología
19.
Ethn Dis ; 25(1): 72-7, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25812255

RESUMEN

African Americans with serious mental illness (SMI) continue to experience inadequate representation in clinical trials. Persons with SMI, regardless of race, have an increased burden of all cardiovascular disease (CVD) risk factors including obesity, hypertension, diabetes mellitus, dyslipidemia, metabolic syndrome and tobacco smoking. Having SMI and being African American, however, is each associated with an increased risk of CVD mortality compared to the general population. There is a critical need, therefore, to adapt health promotion interventions for African Americans with SMI. We sought to examine overall recruitment into a randomized clinical trial of CVD prevention among persons with SMI, and to examine racial differences in interest, enrollment, and potential barriers to participation. Although similar levels of interest in participation were seen between African Americans and Caucasians in signing screening consent, 9.6% fewer African Americans enrolled due to inability to complete initial data collection. Further work is needed to better understand the nature of the barriers encountered by African Americans with SMI who otherwise may be interested in participating within clinical trials.


Asunto(s)
Negro o Afroamericano , Promoción de la Salud/organización & administración , Trastornos Mentales/complicaciones , Obesidad/prevención & control , Selección de Paciente , Población Blanca , Adulto , Femenino , Humanos , Masculino , Maryland , Persona de Mediana Edad
20.
J Dual Diagn ; 11(2): 145-50, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25985201

RESUMEN

OBJECTIVE: Consumers with serious mental illness smoke more and are at higher risk for smoking-related illness. We examined provider and consumer factors influencing the implementation of the evidence-based "5 A's" (ask, advise, assess, assist, arrange) in six community mental health centers in greater Baltimore. METHODS: Data collected as part of a larger study examining the effectiveness of delivery of the 5 A's at patient visits. First, we examined responses to a survey administered to 49 clinicians on barriers and attitudes toward delivering the 5 A's. Second, we used multilevel models to examine variance between patients (n = 228), patient factors, and variance between their psychiatrists (n = 28) in the delivery of the 5 A's (and first 3 A's). RESULTS: The most strongly endorsed barrier was perceived lack of patient interest in smoking cessation. Psychiatrists and patients both accounted for significant variance in the delivery of the 5 A's and 3 A's. Patient "readiness to change" predicted delivery of the full 5 A's, while smoking severity predicted delivery of the first 3 A's. CONCLUSIONS: There is a critical need for creative and collaborative solutions, policies, and clinician training to address actual and perceived obstacles to the delivery of evidence-based smoking cessation treatment in the mental health care setting.


Asunto(s)
Centros Comunitarios de Salud Mental , Trastornos Mentales/complicaciones , Cese del Hábito de Fumar/métodos , Tabaquismo/terapia , Adulto , Conocimientos, Actitudes y Práctica en Salud , Humanos , Persona de Mediana Edad , Cooperación del Paciente , Cese del Hábito de Fumar/psicología , Tabaquismo/complicaciones
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