Tag: pubmed

J Genet. 2021;100:44.

ABSTRACT

Dysregulated histone methylation has emerged as a recurring theme in multiple neuropsychiatric disorders. However, it is yet unclear whether the altered histone methylation is associated with aetiologic mechanisms or an outcome of disease manifestation. In this study, we examined the genomewide association studies datasets of three major psychiatric disorders, schizophrenia (SCZ), bipolar disorder (BIP), and major depression disorder (MDD), which represents a total of 231,783 cases and 425,444 controls, to clarify the relationship. Our gene-set enrichment analysis results identified statistically significant association of genes involved in three histone methylation biological processes with the three adult-onset psychiatric disorders, which is mainly driven by the histone H3K4 methylation pathway (GO: 0051568). Further analysis of histone H3K4 methylation pathway genes revealed a widespread role of the genes in brain function and disease; 29 (52%) and 41 genes (73.2%) were associated with at least one brain-related trait or brain disorder, respectively. Spatiotemporal gene expression analysis suggests that these pathway genes play a critical role during the prenatal period and are consistent regulators in the cerebral cortex throughout an individual’s life. AUTS2, DNMT1 and TET2 are genes of particular interest due to their pervasive role in various aspects of brain function. Our findings support a critical aetiologic role of H3K4 methylation genes shared across SCZ, BIP and MDD, providing new direction for the development of epigenetically-focussed drugs targeting common causal factors of these devastating disorders.

PMID:34282735

Sex Transm Dis. 2021 Jul 17. doi: 10.1097/OLQ.0000000000001516. Online ahead of print.

ABSTRACT

BACKGROUND: Studies in women have shown an increased risk of HIV acquisition with prior HPV infection; however, few studies have been conducted among men. Our objective was to assess whether HPV-related external genital lesions (EGLs) increase risk of HIV seroconversion among men.

METHODS: A total of 1379 HIV-negative men aged 18-70 years from the US, Mexico, and Brazil were followed for up to seven years and underwent clinical examination for EGLs and blood draws every six-months. HIV seroconversion was assessed in archived serum. Cox proportional hazards and marginal structural models assessed the association between EGL status and time to HIV seroconversion.

RESULTS: 29 participants HIV seroconverted during follow-up. Older age was associated with a lower hazard of HIV seroconversion. We found no significant difference in the risk of HIV seroconversion between men with and without EGLs (adjusted hazard ratio [HR] = 0.94, 95%CI 0.32-2.74). Stratified analyses focusing on men that have sex with men found no association between EGLs and HIV seroconversion risk (HR = 0.63, 95%CI 0.00-1.86).

CONCLUSION: EGLs were not associated with higher risk for HIV seroconversion in this multinational population, although statistical power was limited as there were few HIV seroconversions. Results may differ in populations at higher risk for HIV.

PMID:34282740 | DOI:10.1097/OLQ.0000000000001516

J Biomol Struct Dyn. 2021 Jul 20:1-9. doi: 10.1080/07391102.2021.1953599. Online ahead of print.

ABSTRACT

Short-term breastfeeding and early exposure to dairy products into infant diets, may be critical factors for development of type 1 diabetes. In this study, we investigate whether cow’s milk proteins are risk factors for type 1 diabetes in genetically susceptible individuals (HLA DR3/DR4) by using statistical analysis and in silico approach. In order to verify the potential risk of the early introduction of cow’s milk, we conducted this study to validate the veracity of this hypothesis in our population. We included 121 subjects, 55 type 1 diabetics and 74 controls from the region of Tlemcen (Algeria). Thus, the in silico approach was performed to determine the molecular mimicry region between Bovine serum albumin and beta-lactoglobulin with self-Islet antigen 2 and glutamate decarboxylase 65 by determining their sequences and their 3D structures. The risk factors associated with type 1 diabetes in a genetically predisposed individual (HLA DR3/DR4) retained by the logistic model are: type 1 and type 2 diabetes inheritance, the early introduction of cow’s milk before 6 months and breastfeeding less than 9 months. Besides, the epitopes of cow’s milk proteins have the capacity to bind to predisposing HLA class II molecules (HLA DR3/DR4) and induce an immune reaction by the secretion of Interleukin 4 (Th2) and Interferon (Th1) which lead to the destruction of pancreatic beta cells. The early introduction of cow’s milk proteins in susceptible individuals is considered as risk factors for the pathogenesis of T1DM. The in silico approach confirm that BSA and BLG share sequence and structure homology with IA2 and GAD65.Communicated by Ramaswamy H. Sarma.

PMID:34282715 | DOI:10.1080/07391102.2021.1953599

Nutr Neurosci. 2021 Jul 20:1-12. doi: 10.1080/1028415X.2021.1954292. Online ahead of print.

ABSTRACT

Objectives: Gulf War Illness (GWI) is a chronic, multi-symptom disorder with underlying central nervous system dysfunction and cognitive impairments. The objective of this study was to test the low glutamate diet as a novel treatment for cognitive dysfunction among those with GWI, and to explore if baseline resting-state electroencephalography (EEG) could predict cognitive outcomes.Methods: Cognitive functioning was assessed at baseline, after one-month on the diet, and across a two-week double-blind, placebo-controlled crossover challenge with monosodium glutamate (MSG) relative to placebo.Results: Significant improvements were seen after one-month on the diet in overall cognitive functioning, and in all other domains tested (FDR p < 0.05), except for memory. Challenge with MSG resulted in significant inter-individual response variability (p < 0.0001). Participants were clustered according to baseline resting-state EEG using k-means clustering to explore the inter-individual response variability. Three distinct EEG clusters were observed, and each corresponded with differential cognitive effects during challenge with MSG: cluster 1 had cognitive benefit (24% of participants), cluster 2 had cognitive detriment (42% of participants), and cluster 3 had mild/mixed effects (33% of participants).Discussion: These findings suggest that the low glutamate diet may be a beneficial treatment for cognitive impairment in GWI. Future research is needed to understand the extent to which resting-state EEG can predict response to the low glutamate diet and to explore the mechanisms behind the varied response to acute glutamate challenge.

PMID:34282720 | DOI:10.1080/1028415X.2021.1954292

Ann Ital Chir. 2021 Jun 21;10:S0003469X21036071. Online ahead of print.

ABSTRACT

AIM: Totally extra-peritoneal (TEP) repair technique is one of the most used laparoscopic techniques for inguinal hernia repair. This study aimed to investigate the learning curve of technique and phases involved to help guiding novice learners.

MATERIALS AND METHODS: Box-Jenkinson method for time series analysis and moving average method for standard deviation (SD) analysis and were employed for group determination and learning curve evaluation. Three individual groups were created based on the statistical analysis results and each group has been evaluated to determine the accuracy of the learning phases.

RESULTS: The learning phases of the technique were classified as: (1) Phase 1 (1st-28th case), (2) Phase 2 (29th-98th case), and Phase 3 (after 99th case). Operation time was statistically different between each phase. In addition, the number of intra-operative incidents was also found to be statistically different between phase-1 and other phases, with phase-1 being unfavorable.

CONCLUSION: To our knowledge, this is the first study that describes phases of learning the TEP hernia repair and compares these phases in terms of complication and operative time. We recommend that novice surgeons take extra care in terms of the selection of their patients during their first 28 cases and broaden their patient spectrum after the 63rd case. The learning curve of the TEP technique has three phases and each step must be carefully considered for patient selection so that milestones can be achieved as smoothly as possible without any complications.

KEY WORDS: Hernia, Laparoscopy, Learning curve, Moving average, TEP.

PMID:34282729

Aging Ment Health. 2021 Jul 20:1-10. doi: 10.1080/13607863.2021.1951658. Online ahead of print.

ABSTRACT

OBJECTIVE: We examined the effects of exercise on depression in older adults living in nursing homes and explored the moderator effects of participants, methods, and intervention characteristics.

METHODS: We searched 8 databases from inception to January 2020 without date restrictions. We retrieved primary studies measuring exercise with 60-year-olds with depression that were written in English. Two researchers independently coded each primary study and compared codes for discrepancies. They consulted a third researcher to come to consensus. We used random-effects model to compute effect sizes using Hedges’ g, a forest plot, and Q and I² statistics as measures of heterogeneity. We also examined moderator analyses.

RESULTS: Twenty-one studies included 2,594 participants (81.8 ± 4.8 years old). Overall, exercise showed a small improvement in depression compared to controls (ES=.25; 95%CI 0.11, 0.38; p=.000). Interestingly, interventionists by physiotherapists had a smaller effect on depressive symptoms (.04) than other health interventionists (.37). As people aged, exercise was less effective in reducing depression (slope=-.03, Q_model=5.03, p=.025). Researchers who included a higher percentage of women in exercise showed less improvement of depression (slope=-.01, Q_model=8.60, p=.003). Also, when researchers used depression scales with higher reliability values, they measured higher levels of depression (slope = 5.48, Q_model=5.60, p=.018). No other quality indicators moderated the effects of exercise on depression.

CONCLUSION: Exercise significantly improved depressive symptoms among older adults in nursing homes. Exercise might be used as adjunct/alternative complementary treatment for improving depressive symptoms in older adults in nursing homes.

PMID:34282683 | DOI:10.1080/13607863.2021.1951658

J Ment Health. 2021 Jul 20:1-8. doi: 10.1080/09638237.2021.1952945. Online ahead of print.

ABSTRACT

BACKGROUND: The extant literature portrays informal caregiving by family members who care for a person with a diagnosis of schizophrenia, as one that involves a tremendous amount of stress and burden.

AIM: This investigation sought to assess informal caregiving experience with regard to variables such as perceived positive aspects, preparedness, resilience, and life satisfaction.

METHOD: Data was collected from two groups of respondents accessing services at the Thanjavur Medical College Hospital, Tamil Nadu, India. The study group consisted of 75 family caregivers of persons with a diagnosis of schizophrenia and the reference group had an equal number of caregivers of people with minor physical ailments. The two groups were matched on important background factors, ensuring their comparability. Standardised instruments were administered to all respondents to collect data pertaining to the key variables and analysed using appropriate statistical procedures.

RESULTS: Results indicated that caregivers of people with a diagnosis of schizophrenia, while manifesting higher levels of resilience, perceived lesser positive aspects in their caring role. A significant statistical difference between both groups of respondents in terms of their life satisfaction and resilience. Regression analyses extracted preparedness and life satisfaction as significant contributors to the manifestation of resilience in the caregivers.

CONCLUSIONS: The study highlights the importance of caregiver preparedness and life satisfaction in enhancing their resilience.

PMID:34282713 | DOI:10.1080/09638237.2021.1952945

Scand J Public Health. 2021 Jul 20:14034948211030353. doi: 10.1177/14034948211030353. Online ahead of print.

ABSTRACT

AIMS: The aims of this study were to construct a small-area index of multiple deprivation (IMD) from single deprivation indicators (SDIs) and to compare the explanatory power of the IMD and SDIs with regard to mortality. We considered a small-area division of Sweden consisting of 5985 DeSO (Demografiska statistikområden), each with a population size between 653 and 4243 at the end of 2018.

METHODS: Four SDIs were provided by open-source data: (a) the proportion of inhabitants with a low economic standard; (b) the proportion of inhabitants aged 25-64 years with ⩽12 years of schooling; (c) the proportion of inhabitants aged 16-64 years who were not in paid employment; and (d) the proportion of inhabitants who lived in a rented apartment/house. A four-indicator IMD was constructed using factor analysis. As a validation, the IMD and SDIs were compared by exploring their DeSO-level associations with spatially smoothed death rates, with robustness checks of associations across different small-area contexts defined by degree of urbanisation and distribution of immigrants from non-Western countries.

RESULTS: The constructed IMD and SDI1 performed essentially equally and outperformed SDI2, SDI3 and SDI4. Associations between IMD/SDI1 and the spatially smoothed death rates were most pronounced within the age range 60-79 years, showing 5-8% lowered rates among those categorised in the least deprived quintiles of IMD and SDI1, respectively, and 7-9% elevated rates among those categorised in the most deprived quintiles. These associations were consistent within each small-area context.

CONCLUSIONS: We suggest prioritisation of SDI1, that is, a DeSO-level deprivation indicator based on open-access data on economic standard, for public-health surveillance in Sweden.

PMID:34282665 | DOI:10.1177/14034948211030353

JDR Clin Trans Res. 2021 Jul 20:23800844211021391. doi: 10.1177/23800844211021391. Online ahead of print.

ABSTRACT

INTRODUCTION: Despite being acknowledged as the second global burden of oral disease, periodontal disease has few epidemiologic studies in the literature, particularly for developing countries. Many previous studies have assessed the relationship between periodontal disease and oral health-related quality of life (OHRQoL), with patients attending dental clinic or hospitals rather than a general population. This study attempted to fill the knowledge gap in limited information about periodontal disease and OHRQoL, with reference to a general population in a developing country.

OBJECTIVES: To investigate the relationship between OHRQoL and periodontal diseases in an older population in Indonesia.

METHODS: We invited 582 older people from community health centers. The 369 (63.4%) older people who agreed to participate consented to an oral health examination and a questionnaire capturing demographic, socioeconomic, behavioral, and Oral Health Impact Profile-14 (OHIP-14) data.

RESULTS: Almost 75% of the older people had generalized periodontitis; 3% had healthy periodontal status; and around 22% had localized periodontitis. There was a lack of statistical evidence for an association between periodontal disease status and OHRQoL. This result was based on the appraisal of the prevalence of the impact (Odds ratio [OR], 0.95 [95% CI, 0.54 to 1.59]; P = 0.77), difference in mean severities (0.07 [95% CI, -1.66 to 1.80]; P = 0.94), and extent of the impact (P = 0.996). However, we found evidence for a relationship between tooth mobility and OHRQoL for all of the OHIP assessments, including prevalence of the impact (OR, 1.87 [95% CI, 1.16 to 3.01]; P = 0.009), difference in mean severities (-2.98 [95% CI, -4.50 to -1.45]; P < 0.001), and extent of the impact (P = 0.001).

CONCLUSION: There was a lack of statistical evidence for a relationship between periodontal disease status and OHRQoL in this society. However, we found evidence that tooth mobility, as a sign of periodontal disease progression, is related to OHRQoL.

KNOWLEDGE TRANSFER STATEMENT: The present study can be used by dentists, community health workers, and policy makers in Indonesia to understand the prevalence, severity, and extent of the negative impacts of periodontal disease on older people’s quality of life. In addition, this study provides information about factors that might considerably affect the oral health-related quality of life in this society, such as brushing habits, dental visit, family income, DMF-T status, and subjective appraisal toward dental health.

PMID:34282670 | DOI:10.1177/23800844211021391

Trauma Violence Abuse. 2021 Jul 20:15248380211030242. doi: 10.1177/15248380211030242. Online ahead of print.

ABSTRACT

BACKGROUND: Hegemonic masculinity has been recognized as contributing to the perpetration of different forms of gender-based violence (GBV). Abandoning hegemonic masculinities and promoting positive masculinities are both strategies used by interventions that foreground a “gender-transformative approach.” Preventing GBV among young people could be strengthened by engaging young men. In this article, we aim to systematically review the primary characteristics, methodological quality, and results of published evaluation studies of educational interventions that aim to prevent different forms of GBV through addressing hegemonic masculinities among young people.

MAIN BODY: We conducted a systematic review of available literature (2008-2019) using Medline (PubMed), Scopus, Web of Science, PsycInfo, the CINAHL Complete Database, and ERIC as well as Google scholar. The Template for Intervention Description and Replication was used for data extraction, and the quality of the selected studies was analyzed using the Mixed Method Appraisal Tool. More than half of the studies were conducted in Africa (n = 10/15) and many were randomized controlled trials (n = 8/15). Most of the studies with quantitative and qualitative methodologies (n = 12/15) reported a decrease in physical GBV and/or sexual violence perpetration/victimization (n = 6/15). Longitudinal studies reported consistent results over time.

CONCLUSIONS: Our results highlight the importance of using a gender-transformative approach in educational interventions to engage young people in critical thinking about hegemonic masculinity and to prevent GBV.

PMID:34282677 | DOI:10.1177/15248380211030242