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1.
Indian J Psychol Med ; 46(3): 196-207, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38699764

RESUMO

Background: As the number of students with learning disabilities (SwLD) entering higher education (HE) increases, a need arises to improve the services provided to them by understanding their experiences. This scoping review explores the extent and type of evidence on the experiences of SwLD in HE. Method: The review followed the six stages outlined by Arksey and O'Malley. PubMed, Science Direct, EBSCO, ProQuest, and APA PsycNet were searched for primary data, and studies published between January 2012 and July 2022 were included. The following information was extracted and collated from the included studies: author/s, year, location, objective/aim, study design, materials and methods, and major findings. Results: The search yielded 3729 titles and abstracts. Their screening resulted in 26 eligible articles. The review of these articles identified three major themes: (a) academic concerns, (b) psychosocial experiences, and (c) support systems and accommodations. The academic concerns included difficulties in areas such as reading, writing, and spelling. The studies on psychosocial experiences showed that SwLD experience stress, anxiety, and lower self-esteem. The studies on support systems and accommodations indicate that they get academic support, technological support, and extra time for examinations from educational institutions. Conclusion: The SwLD experiences academic and psychosocial challenges during higher studies. However, the existing support systems do not address these challenges, and there is a need for further research in this area.

2.
J Family Med Prim Care ; 12(10): 2456-2462, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-38074231

RESUMO

Background: A good number of psychiatric patients continue to stay in psychiatric hospitals for longer period of time despite their recovery. Inevitably, they tend to experience limitations to their freedom, personal choice and social isolation, and loss of self. It is important to assess the characteristics of these patients and the challenges in social integration. Materials and Methods: A cross-sectional study was conducted at a mental health hospital from May 2018 to January 2023. The data were collected from a retrospective review of 101 case files of all the long-stay patients (LSPs) who were admitted to psychiatric closed wards. Furthermore, cases were utilized to analyze the psychosocial situations of LSP. Results: This study reveals that the majority of the subjects were unmarried, females, unemployed, and hailing from rural background. Nearly 50% of the patients' families are untraceable. About three-fourths of those patients had the wrong address and lacked community psychiatric rehabilitation facilities and employment opportunities in their neighborhood. Caregivers' burden and poverty are major causes for prolonged or long-term hospitalization of patients in the mental hospital and barriers to community reintegration. Conclusion: Facilitating the transition of patients from the psychiatric hospital to community care is the need of the hour.

3.
Asian J Psychiatr ; 54: 102363, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33271685

RESUMO

Multiple lines of evidence have suggested a potential role of Neuregulin-1 (NRG1) in the neurodevelopmental pathogenesis of schizophrenia. Interaction between genetic risk variants present within NRG1 locus and non-specific gestational putative insults can significantly impair crucial processes of brain development. Such genetic effects can be analyzed through the assessment of digit ratio and dermatoglyphic patterns. We examined the role of two well-replicated polymorphisms of NRG1 (SNP8NRG221533 and SNP8NRG243177) on schizophrenia risk and its probable impact on the digit ratio and dermatoglyphic measures in patients (N = 221) and healthy controls (N = 200). In schizophrenia patients, but not in healthy controls, a significant association between NRG1 SNP8NRG221533 C/C genotype with lower left 2D:4D ratio, as well as with higher FA_TbcRC and DA_TbcRC. The substantial effect of SNP8NRG221533 on both digit ratio and dermatoglyphic measures suggest a potential role for NRG1 gene variants on neurodevelopmental pathogenesis of schizophrenia.


Assuntos
Neuregulina-1 , Esquizofrenia , Dermatoglifia , Genótipo , Humanos , Neuregulina-1/genética , Polimorfismo de Nucleotídeo Único , Esquizofrenia/genética
4.
NPJ Schizophr ; 6(1): 30, 2020 Nov 06.
Artigo em Inglês | MEDLINE | ID: mdl-33159092

RESUMO

Recently, we developed a machine-learning algorithm "EMPaSchiz" that learns, from a training set of schizophrenia patients and healthy individuals, a model that predicts if a novel individual has schizophrenia, based on features extracted from his/her resting-state functional magnetic resonance imaging. In this study, we apply this learned model to first-degree relatives of schizophrenia patients, who were found to not have active psychosis or schizophrenia. We observe that the participants that this model classified as schizophrenia patients had significantly higher "schizotypal personality scores" than those who were not. Further, the "EMPaSchiz probability score" for schizophrenia status was significantly correlated with schizotypal personality score. This demonstrates the potential of machine-learned diagnostic models to predict state-independent vulnerability, even when symptoms do not meet the full criteria for clinical diagnosis.

5.
Asian J Psychiatr ; 53: 102193, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32585632

RESUMO

OBJECTIVE: Schizophrenia is a complex neuropsychiatric disorder with significant genetic predisposition. In a subset of schizophrenia patients, mitochondrial dysfunction could be explained by the genomic defects like mitochondrial DNA Copy Number Variations, which are considered as a sensitive index of cellular oxidative stress. Given the high energy demands for neuronal functions, altered Mitochondrial DNA copy number (mtDNAcn) and consequent impaired mitochondrial physiology would significantly influence schizophrenia pathogenesis. In this context, we have made an attempt to study mitochondrial dysfunction in schizophrenia by assessing mtDNAcn in antipsychotic-naïve/free schizophrenia patients. METHOD: mtDNAcn was measured in 90 antipsychotic-naïve / free schizophrenia (SCZ) patients and 147 Healthy Controls (HC). The relative mtDNAcn was determined by quantitative real-time polymerase chain reaction (qPCR) using TaqMan® multiplex assay method. RESULT: A statistically significant difference between groups [t = 5.22, P < 0.001] was observed, with significantly lower mtDNAcn in SCZ compared to HC. The group differences persisted even after controlling for age and sex [F (4, 232) = 22.68, P < 0.001, η2 = 0.09]. CONCLUSION: Lower mtDNAcn in SCZ compared to HC suggests that mtDNAcn may hold potential to serve as an important proxy marker of mitochondrial function in antipsychotic-naïve/free SCZ patients.


Assuntos
Variações do Número de Cópias de DNA , Esquizofrenia , DNA Mitocondrial/genética , DNA Mitocondrial/metabolismo , Humanos , Leucócitos/metabolismo , Mitocôndrias/genética , Esquizofrenia/genética , Esquizofrenia/metabolismo
6.
Indian J Psychiatry ; 62(1): 36-42, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32001929

RESUMO

BACKGROUND: Differential susceptibility model hypothesizes that a genotype need not be unfavorable all the time as postulated in stress-diathesis model but can be beneficial in a supportive context. Single-nucleotide polymorphism (SNP) (rs18000795) within the promoter region of interleukin-6 (IL-6) gene was earlier noted to have a differential susceptibility on hippocampal volume in schizophrenia (SCZ). MATERIALS AND METHODS: We examined antipsychotic-naïve/free SCZ patients (n = 35) in comparison with healthy controls (n = 68). Hippocampus volumes were assessed in 3 Tesla magnetic resonance imaging using voxel-based morphometry. Region of interest analysis was done using hippocampus mask. IL-6 SNP (rs1800795) was genotyped using TaqMan allelic discrimination assay. RESULTS: A significantly deficient right (T = 3.03; K E= 392; P SVC-FWE= 0.04) and left (T = 3.03; K E= 47; P uncorr= 0.03) hippocampal gray matter volumes were noted in SCZ patients after controlling for the potential confounding effects of age, sex, and total brain volume. There was a significant diagnosis x rs1800795 genotype interaction involving both left (T = 2.17, K E= 95, P uncorr= 0.02) and right (T = 1.82, K E= 29, P uncorr= 0.04) hippocampal volumes. Patients with GG (left: F =5.78; P = 0.02; right: F =6.21; P = 0.01) but not GC/CC genotype (left: F =0.89; P = 0.34; right: F <0.01; P = 0.95) had volume depletion. CONCLUSION: A paradoxical smaller hippocampal volume with GG genotype was noted in SCZ. Further elucidation of its mechanistic basis might have translational implications.

7.
Indian J Psychol Med ; 41(5): 413-419, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31548763

RESUMO

BACKGROUND: Siblings of persons diagnosed with schizophrenia (SPS) are one among the major sources of support for persons with schizophrenia. There is a dearth of psychosocial literature on SPS in India. This qualitative study explored the perspectives about the illness, attitudes, and caregiving experiences of SPS. MATERIALS AND METHODS: Qualitative audio-recorded interviews were conducted with 15 SPS, purposively selected from a tertiary mental health hospital of Southern India. A general inductive approach was adopted to analyze the qualitative data. RESULTS: Four broad themes were identified from qualitative data analysis. (1) SPS described several explanatory models of mental illness in terms of causal attributions and treatment care. (2) They had expressed emotion toward their ill siblings, such as criticality, hostility, and emotional over-involvement. (3) They experienced objective and subjective burden while caring for their ill sibling. In spite of all these, (4) they were part of their ill siblings' care in terms of ensuring regular follow-ups and drug adherence and supported their livelihood. They coped up with adaptive as well as maladaptive strategies. CONCLUSION: SPS provide significant support to their affected siblings. However, they do have non-biomedical models of mental illness and negative attitudes toward patients and experience burden. Hence, psychosocial interventions may help SPS while caregiving for their affected siblings.

8.
Asian J Psychiatr ; 39: 104-109, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30599450

RESUMO

BACKGROUND: Emotional and behavioral problems place a heavy burden on the adolescents and their families. Many factors are known to influence adolescent mental health. The current study was designed to determine the predictors of emotional and behavioral problems among Indian adolescents. METHODS: The parents of adolescents in the age group of 10 to 18 (N = 81) were recruited from the National Institute of Mental Health and Neuro Sciences, Bangalore, Karnataka, India. Alabama Parenting Questionnaire (Parent version), Strength and Difficulty Questionnaire (Parent version) and, the Parent Interview Schedule (PIS) were used to assess the parental practices, emotional and behavioral problems and abnormal psychosocial environment of the adolescents. The data were analyzed with stepwise multiple linear and Quantile regression to find out significant predictors of emotional and behavioral problems among adolescents. RESULTS: Adolescent's age, parental involvement, and paternal age are the significant predictors of emotional problems. Parental mental disorder or deviance, gender, and inconsistent discipline are the significant predictors for conduct problems. Poor monitoring and supervision, paternal and maternal age are statistically significant predictors of prosocial skills among the adolescents. Inadequate or distorted intrafamilial communication and parental mental disorder are the significant predictors of total difficulties among the adolescents. CONCLUSION: The study validates the role of abnormal psychosocial environments and negative parenting practices as risk factors for emotional and behavioral problems among the adolescents. A comprehensive analysis which covers all possible variables related to adolescent mental health is mandatory for the health professionals before planning the intervention.


Assuntos
Comportamento do Adolescente/psicologia , Sintomas Afetivos/diagnóstico , Sintomas Afetivos/psicologia , Poder Familiar/psicologia , Pais/psicologia , Comportamento Problema/psicologia , Adolescente , Criança , Feminino , Humanos , Índia , Masculino , Fatores de Risco , Inquéritos e Questionários
9.
Asian J Psychiatr ; 38: 20-24, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30384224

RESUMO

BACKGROUND: Common Mental Disorders (CMDs) are frequent among adolescents and early adults. National Mental Health Survey of India 2015-2016 shows alarming results, especially for depression. This study explored the prevalence of psychological distress among college students. Additionally, the relationship between gender, living arrangement with psychological distress in various educational streams were explored. MATERIALS AND METHODS: Through a cross-sectional community-based survey a total of 4839 college going students of various educational streams in Mangalore, Karnataka were assessed for psychological distress with Self-Reporting Questionnaire (SRQ-20). RESULTS: Participants had median age of 19 (range = 9) years and the majority (59.5%) were females. The median SRQ score was 4 (range 20) and about 28.5% of students were found to be psychologically stressed. The suicidal ideation was reported by 13.6% of the students. Engineering and Arts/science/commerce students had significantly higher psychological distress scores as compared to health and allied sciences (k = 47.7; p < 0.001) and those who were staying with families (U = 2,687,648.5; p = 0.004) reported higher levels of psychological distress in comparison to those who were staying away from their families. CONCLUSION: Prevalence of psychological distress was high among students, especially non-medical students, students who were staying with their families, and those who were younger in age. A significant proportion of students had suicidal ideation, which needs early mental health interventions at the college level.


Assuntos
Estresse Psicológico/epidemiologia , Estudantes/estatística & dados numéricos , Ideação Suicida , Universidades/estatística & dados numéricos , Adolescente , Adulto , Estudos Transversais , Feminino , Humanos , Índia/epidemiologia , Masculino , Prevalência , Autorrelato , Adulto Jovem
10.
J Psychiatr Res ; 104: 88-95, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-30005373

RESUMO

Immunopathogenesis of schizophrenia has emerged as one of the predominant research paradigms in recent times. Based on the altered serum levels as well as gene expression, IL-6 has been considered as a peripheral biomarker of schizophrenia. However, the precise mechanism underlying the altered expression of IL6 in schizophrenia is inadequately known. Given the profound influence of environmental factors on schizophrenia risk, it is important to understand the effect of epigenetic changes on schizophrenia risk. Further, it is not known whether epigenetic changes modulate the expression of IL6 and its subsequent effects on the risk and progression of schizophrenia. In this study, we analysed and compared the methylation status of IL6 promoter sequence from -1200bp to +27bp in antipsychotic-naïve/free schizophrenia patients (N = 47) and matched healthy controls (N = 47) using bisulfite sequencing method. In addition, we also examined the methylation status in these patients at least after 3-months of treatment with antipsychotics (N = 40). At baseline, a state of hypomethylation was observed in the IL6 promoter of schizophrenia subjects in comparison to healthy controls. This state of hypomethylation was shown to be reversed by the administration of antipsychotics. In summary, our observations emphasize a significant role for IL-6 promoter methylation in schizophrenia pathogenesis as well as treatment with antipsychotic medications.


Assuntos
Antipsicóticos/uso terapêutico , Metilação de DNA/efeitos dos fármacos , Interleucina-6/metabolismo , Esquizofrenia/tratamento farmacológico , Esquizofrenia/genética , Adulto , Estudos de Casos e Controles , Feminino , Humanos , Interleucina-6/genética , Masculino , Regiões Promotoras Genéticas/efeitos dos fármacos , Regiões Promotoras Genéticas/genética , Escalas de Graduação Psiquiátrica
11.
J Neural Transm (Vienna) ; 125(4): 741-748, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29305655

RESUMO

Earlier studies have implicated CHRNA7, coding α-7 nicotinic acetylcholine receptor (α7 nAChR), and its partially duplicated chimeric gene CHRFAM7A in schizophrenia. However, the relationship between the alterations in peripheral gene expression of CHRFAM7A and severity of clinical symptoms has not been examined. Furthermore, potential influence of the antipsychotic medication on CHRFAM7A expression in drug-naive or drug-free schizophrenia is an unexplored area. CHRFAM7A gene expression in lymphocytes was analyzed in 90 antipsychotic-naïve or free schizophrenia patients using TaqMan-based quantitative RT-PCR. Psychotic symptoms were assessed using Scale for Assessment of Positive Symptoms and Scale for Assessment of Negative Symptoms (SANS). The relationship between psychopathology and CHRFAM7A expression was examined. In addition, measurement of CHRFAM7A gene expression was repeated during follow-up after short-term antipsychotic treatment in 38 patients. There was significant inverse correlation between CHRFAM7A expression and total negative psychopathology score-SANS, and this relationship persisted after accounting for possible confounders such as age, sex and smoking. On exploration of the factor structure of psychopathology using principal component analysis, all the negative symptoms-affective flattening, alogia, apathy, anhedonia and inattention were found to be inversely associated with CHRFAM7A expression. Furthermore, analysis of repeated measures revealed a significant increase in CHRFAM7A expression in patients after short-term administration of antipsychotic medication. Our study observations support the role for CHRFAM7A gene in schizophrenia pathogenesis and suggest a potential novel link between deficient CHRFAM7A expression and negative psychopathology. Furthermore, up-regulation of CHRFAM7A gene expression by antipsychotics suggests that it could be a potential state marker for clinical severity.


Assuntos
Antipsicóticos/uso terapêutico , Expressão Gênica/efeitos dos fármacos , Esquizofrenia/tratamento farmacológico , Esquizofrenia/genética , Receptor Nicotínico de Acetilcolina alfa7/genética , Adulto , Feminino , Humanos , Masculino
12.
Asian J Psychiatr ; 32: 59-66, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-29216608

RESUMO

Siblings of persons with schizophrenia are important in providing long-term social support to the patients. Interventions addressing their needs are very sparse. Hence, this study aimed at testing the short-term effects of brief need based psychoeducation on knowledge, self-stigma, and burden among siblings of persons with schizophrenia. In this prospective controlled open label trial, 80 siblings of persons with schizophrenia were allocated in equal numbers to the brief need based psychoeducation group and the treatment-as-usual group. The outcomes were measured at baseline, and after the first and third month post-intervention. RM-ANCOVA was conducted to test the effect of the brief psychoeducation on outcome scores. The groups were similar with respect to socio-demographic, clinical, and outcome scores at the baseline. There was a significant group×time interaction effect on knowledge (F=8.71; p<0.01; ηp2=0.14) and self-stigma scores (F=14.47; p<0.001; ηp2=0.21), wherein the brief psychoeducation group showed a significant increase in knowledge and reduction in self-stigma with medium effect size through baseline to the third month follow-up as compared to the treatment as usual group. We also observed a significant main effect of time; irrespective of the group allocation, there was a significant increase in the knowledge through baseline to third month follow-up (F=5.69; p=0.02; ηp2=0.09). No main or interaction effects of group and time were observed on burden. The findings suggest that brief need based psychoeducation may increase knowledge about the illness and reduce self-stigma. Further systematic studies are warranted to test this intervention for long-term effects.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Avaliação de Resultados em Cuidados de Saúde , Psicoterapia Breve/métodos , Esquizofrenia , Irmãos/psicologia , Estigma Social , Adulto , Feminino , Humanos , Masculino , Estudos Prospectivos , Adulto Jovem
13.
Psychiatry Res ; 259: 154-159, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-29049907

RESUMO

Some aspects of saccadic performance have been found to be abnormal in chronic schizophrenia. The majority of this research has, however, been performed on patients treated with long-term antipsychotic medication. Very few studies have examined saccadic performance in antipsychotic-naïve/free patients. There are also very few studies describing the relationship between saccadic performance and clinical symptoms, particularly in antipsychotic free patients. In this study, we compared pro and antisaccade performance in a large sample of antipsychotic-naïve/free schizophrenia patients (N = 45) with healthy controls (N = 57). Clinical symptoms were assessed using Scale for Assessment of Positive Symptoms (SAPS) and Negative Symptoms (SANS). In the antisaccade task, patients made significantly more errors, and their correct antisaccades had smaller amplitudes in comparison to healthy controls. Higher error rates were associated with increased severity of hallucinations. In the prosaccade task, patients had less accurate final eye positions, and made saccades with slower latency and reduced amplitude compared to the healthy controls. These observations in schizophrenia patients without the potential confounds of antipsychotic treatment suggest intrinsic link between saccadic deficits and schizophrenia pathogenesis. The relationship between antisaccade errors and hallucination severity supports the potential link between hallucinations and deficits in inhibitory control.


Assuntos
Alucinações/fisiopatologia , Movimentos Sacádicos/fisiologia , Esquizofrenia/fisiopatologia , Psicologia do Esquizofrênico , Adulto , Antipsicóticos/uso terapêutico , Estudos de Casos e Controles , Feminino , Alucinações/psicologia , Humanos , Masculino
14.
Cytokine ; 107: 59-64, 2018 07.
Artigo em Inglês | MEDLINE | ID: mdl-29217401

RESUMO

Converging evidence suggests important implications of immuno-inflammatory pathway in the risk and progression of schizophrenia. Prenatal infection resulting in maternal immune activation and developmental neuroinflammation reportedly increases the risk of schizophrenia in the offspring by generating pro-inflammatory cytokines including IL-6. However, it is not known how prenatal infection can induce immuno-inflammatory responses despite the presence of immuno-inhibitory Human Leukocyte Antigen-G (HLA-G) molecules. To address this, the present study was aimed at examining the correlation between 14 bp Insertion/Deletion (INDEL) polymorphism of HLA-G and IL-6 gene expression in schizophrenia patients. The 14 bp INDEL polymorphism was studied by PCR amplification/direct sequencing and IL-6 gene expression was quantified by using real-time RT-PCR in 56 schizophrenia patients and 99 healthy controls. We observed significantly low IL6 gene expression in the peripheral mononuclear cells (PBMCs) of schizophrenia patients (t = 3.8, p = .004) compared to the controls. In addition, schizophrenia patients carrying Del/Del genotype of HLA-G 14 bp INDEL exhibited significantly lower IL6 gene expression (t = 3.1; p = .004) than the Del/Ins as well as Ins/Ins carriers. Our findings suggest that presence of "high-expressor" HLA-G 14 bp Del/Del genotype in schizophrenia patients could attenuate IL-6 mediated inflammation in schizophrenia. Based on these findings it can be assumed that HLA-G and cytokine interactions might play an important role in the immunological underpinnings of schizophrenia.


Assuntos
Predisposição Genética para Doença/genética , Antígenos HLA-G/genética , Mutação INDEL , Interleucina-6/genética , Polimorfismo Genético , Esquizofrenia/genética , Adolescente , Adulto , Feminino , Expressão Gênica , Frequência do Gene , Genótipo , Humanos , Interleucina-6/sangue , Masculino , Pessoa de Meia-Idade , Esquizofrenia/sangue , Adulto Jovem
15.
Clin Psychopharmacol Neurosci ; 15(3): 276-281, 2017 Aug 31.
Artigo em Inglês | MEDLINE | ID: mdl-28783938

RESUMO

OBJECTIVE: Perspective-taking ability is an essential spatial faculty that is of much interest in both health and neuropsychiatric disorders. There is limited data on the neural correlates of perspective taking in the context of a realistic three-dimensional environment. We report the results of a pilot study exploring the same in eight healthy volunteers. METHODS: Subjects underwent two runs of an experiment in a 3 Tesla magnetic resonance imaging (MRI) involving alternate blocks of a first-person perspective based allocentric object location memory task (OLMT), a third-person perspective based egocentric visual perspective taking task (VPRT), and a table task (TT) that served as a control. Difference in blood oxygen level dependant response during task performance was analyzed using Statistical Parametric Mapping software, version 12. Activations were considered significant if they survived family-wise error correction at the cluster level using a height threshold of p<0.001, uncorrected at the voxel level. RESULTS: A significant difference in accuracy and reaction time based on task type was found. Subjects had significantly lower accuracy in VPRT compared to TT. Accuracy in the two active tasks was not significantly different. Subjects took significantly longer in the VPRT in comparison to TT. Reaction time in the two active tasks was not significantly different. Functional MRI revealed significantly higher activation in the bilateral visual cortex and left temporoparietal junction (TPJ) in VPRT compared to OLMT. CONCLUSION: The results underscore the importance of TPJ in egocentric manipulation in healthy controls in the context of reality-based spatial tasks.

16.
Asian J Psychiatr ; 23: 39-43, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27969076

RESUMO

Early life immune aberrations have strongly been associated with the risk of schizophrenia. Amongst them, inflammation induced neurodevelopmental origin has emerged as one of the widely recognized underlying mechanisms. Interleukin-10 (IL-10) is an important anti-inflammatory and immunoregulatory cytokine. It modulates the expression of another immuno-inhibitory molecule, Human Leukocyte Antigen-G (HLA-G), predominantly expressed at the feto-maternal interface. Under physiological conditions, IL-10 and HLA-G molecules regulate the feto-maternal immune homeostasis by limiting the inflammatory states and influence the outcome of pregnancy. The aberrant expression of these molecules can cause pregnancy complications, which are known to confer strong risk to schizophrenia in the offspring. However, there is a considerable lack of information on the effect of the functional interactions between IL-10 and HLA-G on the risk of schizophrenia. We therefore examined the impact of possible correlation between IL-10 genetic variations and the plasma levels of soluble HLA-G (sHLA-G) on schizophrenia risk. Genotyping of IL10 (-592 C>A, -1082 A>G) single nucleotide polymorphisms (SNPs) was performed by PCR-RFLP method in 219 schizophrenia patients and 197 healthy subjects and levels of sHLA-G were estimated by ELISA in 46 patients and 44 healthy subjects. There was no significant difference in the genotype and allele frequencies between the groups for both the IL10 SNPs analyzed. However, we observed a correlation between IL10 genetic variation and plasma levels of sHLA-G in schizophrenia patients. Patients carrying CC genotype of IL10 -592C>A polymorphism had significantly lower sHLA-G levels compared to CA and AA genotypes. Our findings suggest the impact of possible correlation between IL-10 and HLA-G on schizophrenia risk.


Assuntos
Antígenos HLA-G/sangue , Interleucina-10/genética , Esquizofrenia/sangue , Esquizofrenia/genética , Adulto , Feminino , Humanos , Masculino , Polimorfismo de Nucleotídeo Único , Risco
17.
Asian J Psychiatr ; 24: 23-27, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-27931901

RESUMO

Auditory hallucinations constitute an important symptom component in 70-80% of schizophrenia patients. These hallucinations are proposed to occur due to an imbalance between perceptual expectation and external input, resulting in attachment of meaning to abstract noises; signal detection theory has been proposed to explain these phenomena. In this study, we describe the development of an auditory signal detection task using a carefully chosen set of English words that could be tested successfully in schizophrenia patients coming from varying linguistic, cultural and social backgrounds. Schizophrenia patients with significant auditory hallucinations (N=15) and healthy controls (N=15) performed the auditory signal detection task wherein they were instructed to differentiate between a 5-s burst of plain white noise and voiced-noise. The analysis showed that false alarms (p=0.02), discriminability index (p=0.001) and decision bias (p=0.004) were significantly different between the two groups. There was a significant negative correlation between false alarm rate and decision bias. These findings extend further support for impaired perceptual expectation system in schizophrenia patients.


Assuntos
Percepção Auditiva/fisiologia , Alucinações/fisiopatologia , Testes Neuropsicológicos/normas , Psicometria/instrumentação , Esquizofrenia/fisiopatologia , Detecção de Sinal Psicológico/fisiologia , Adulto , Feminino , Humanos , Masculino , Reprodutibilidade dos Testes , Adulto Jovem
18.
Hum Immunol ; 77(12): 1166-1171, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-27567986

RESUMO

The Major Histocompatibility Complex (MHC)/Human Leukocyte Antigen (HLA) is known to influence the pathogenesis of several complex human diseases resulting from gene-environmental interactions. Recently, it has emerged as one of the risk determinants of schizophrenia. The HLA-G protein (a non-classical MHC class I molecule), encoded by the HLA-G gene, is shown to play important role in embryonic development. Importantly, its genetic variations and aberrant expression have been implicated in pregnancy complications like preeclampsia, inflammation, and autoimmunity. Converging evidence implicates these phenomena as risk mechanisms of schizophrenia. However, the functional implications of HLA-G in schizophrenia are yet to be empirically examined. The impact of two functional polymorphisms [14bp Insertion/Deletion (INDEL) and +3187 A>G] and soluble HLA-G (sHLA-G) levels on schizophrenia risk was evaluated. In this exploratory study, the Ins/Ins genotype of 14bp INDEL was found to confer a strong risk for schizophrenia. Further, low levels of sHLA-G were shown to have a significant impact on Clinical Global Impression (CGI) severity in people with schizophrenia.


Assuntos
Regiões 3' não Traduzidas/genética , Antígenos HLA-G/genética , Esquizofrenia/genética , Adolescente , Adulto , Feminino , Frequência do Gene , Estudos de Associação Genética , Predisposição Genética para Doença , Genótipo , Humanos , Mutação INDEL/genética , Masculino , Pessoa de Meia-Idade , Polimorfismo Genético , Gravidez , Risco , Adulto Jovem
19.
Asian J Psychiatr ; 17: 16-23, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26272276

RESUMO

There is a lack of studies on siblings of persons with schizophrenia (SOPS) in Asia. This study aims to explore the needs of SOPS in India. 15 SOPS participated in this qualitative explorative study. All the interviews were audio recorded and later transcribed. Data analysis was carried out using General Inductive Approach. Five themes emerged from the data: managing illness or socio-occupational functioning; follow up services; informational needs; personal needs; and miscellaneous needs. SOPS in India have some distinctive needs. Identifying these needs might help in developing and designing specific psychosocial interventions for better management.


Assuntos
Cuidadores , Serviços de Saúde Mental , Esquizofrenia , Irmãos/psicologia , Adulto , Cuidadores/psicologia , Cuidadores/estatística & dados numéricos , Demografia , Gerenciamento Clínico , Saúde da Família/estatística & dados numéricos , Feminino , Necessidades e Demandas de Serviços de Saúde , Humanos , Índia/epidemiologia , Masculino , Saúde Mental/estatística & dados numéricos , Serviços de Saúde Mental/normas , Serviços de Saúde Mental/estatística & dados numéricos , Avaliação das Necessidades , Reabilitação Psiquiátrica/métodos , Reabilitação Psiquiátrica/organização & administração , Pesquisa Qualitativa , Esquizofrenia/diagnóstico , Esquizofrenia/epidemiologia , Esquizofrenia/terapia , Fatores Socioeconômicos
20.
Psychiatry Res ; 228(3): 304-11, 2015 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-26162664

RESUMO

The 'cognitive mapping' component of spatial cognition, namely - the allocentric/egocentric function and its relation to symptoms in schizophrenia is relatively unexplored. In this study, we compared schizophrenia patients (N=44) to demographically-matched healthy controls (N=43) using computer-administered visuospatial transformation tasks with egocentric and allocentric components and analyzed their correlation with symptoms. Significant diagnosis X task-type interaction effect was seen on task accuracy. Patients performed significantly worse than controls in the allocentric letter rotation task (LRT) but not in the egocentric people rotation task (PRT). Accuracy in the LRT was significantly lesser than in PRT among patients but not among controls. Patients were significantly slower as compared to controls in both tasks. Both groups took longer to perform PRT as compared to LRT. LRT accuracy showed significant negative correlation with total positive symptoms as well as negative symptoms scores. Angle of rotation, perspective (front-facing/back-facing), orientation (mirrored/normal), and stimulus type (letter/number) were found to significantly influence performance in both groups of subjects. The present data support the finding that there is a differential impairment of allocentric abilities in schizophrenia patients. Further systematic research in this area may facilitate better understanding of schizophrenia pathogenesis.


Assuntos
Cognição/fisiologia , Orientação/fisiologia , Desempenho Psicomotor/fisiologia , Esquizofrenia/diagnóstico , Psicologia do Esquizofrênico , Adulto , Transtornos Cognitivos/diagnóstico , Transtornos Cognitivos/etiologia , Transtornos Cognitivos/psicologia , Feminino , Humanos , Masculino , Testes Neuropsicológicos , Estimulação Luminosa/métodos , Rotação , Esquizofrenia/complicações , Adulto Jovem
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