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van den Heuvel LL, Suliman S, Bröcker E, Kilian S, Stalder T, Kirschbaum C, Seedat S. The association between hair cortisol levels, inflammation and cognitive functioning in females. Psychoneuroendocrinology 2022; 136:105619. [PMID: 34896739 DOI: 10.1016/j.psyneuen.2021.105619] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/09/2021] [Accepted: 12/01/2021] [Indexed: 01/31/2023]
Abstract
Glucocorticoids and inflammatory markers can influence cognitive function. Hair cortisol concentrations (HCC) reflect longer-term hypothalamic pituitary adrenal (HPA) axis function and combined with immune markers can provide insights into how HPA-axis and immune pathways interact to influence cognition. We examined the association between HCC and high sensitivity c-reactive protein (hsCRP) levels, as well as the interaction between HCC and hsCRP, and cognitive function in a sample of 153 females, aged between 18 and 79 years, from a cross-sectional case-control study (SHARED ROOTS), conducted in Cape Town, South Africa from May 2014 until June 2017. We examined whether HCC and hsCRP levels were associated with performance on neurocognitive tests in both unadjusted and adjusted linear regression models. HCC demonstrated a significant inverse association with verbal working memory in both unadjusted (p = 0.010) and adjusted (p = 0.016) analyses. There were significant interactions between HCC and hsCRP on verbal intelligence (p = 0.016), language (p = 0.023) and executive function (p = 0.008) scores, such that at low HCC hsCRP levels were positively associated with language (p = 0.020) and executive function (p = 0.006) scores and at high HCC hsCRP levels were inversely associated with verbal intelligence (p = 0.034) scores. Though the results did not survive correction for multiple comparisons, they suggest stress-related neuroendocrine effects on working memory impairment. Furthermore, under physiological conditions and low long-term HCC, there may be positive effects of peripheral inflammatory markers on cognitive performance, whereas there may be detrimental effects when the HPA-axis is dysregulated as reflected by high long-term cortisol output.
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Achoki T, Sartorius B, Watkins D, Glenn SD, Kengne AP, Oni T, Wiysonge CS, Walker A, Adetokunboh OO, Babalola TK, Bolarinwa OA, Claassens MM, Cowden RG, Day CT, Ezekannagha O, Ginindza TG, Iwu CCD, Iwu CJ, Karangwa I, Katoto PD, Kugbey N, Kuupiel D, Mahasha PW, Mashamba-Thompson TP, Mensah GA, Ndwandwe DE, Nnaji CA, Ntsekhe M, Nyirenda TE, Odhiambo JN, Oppong Asante K, Parry CDH, Pillay JD, Schutte AE, Seedat S, Sliwa K, Stein DJ, Tanser FC, Useh U, Zar HJ, Zühlke LJ, Mayosi BM, Hay SI, Murray CJL, Naghavi M. Health trends, inequalities and opportunities in South Africa's provinces, 1990-2019: findings from the Global Burden of Disease 2019 Study. J Epidemiol Community Health 2022; 76:jech-2021-217480. [PMID: 35046100 PMCID: PMC8995905 DOI: 10.1136/jech-2021-217480] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 12/14/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Over the last 30 years, South Africa has experienced four 'colliding epidemics' of HIV and tuberculosis, chronic illness and mental health, injury and violence, and maternal, neonatal, and child mortality, which have had substantial effects on health and well-being. Using data from the 2019 Global Burden of Diseases, Injuries and Risk Factors Study (GBD 2019), we evaluated national and provincial health trends and progress towards important Sustainable Development Goal targets from 1990 to 2019. METHODS We analysed GBD 2019 estimates of mortality, non-fatal health loss, summary health measures and risk factor burden, comparing trends over 1990-2007 and 2007-2019. Additionally, we decomposed changes in life expectancy by cause of death and assessed healthcare system performance. RESULTS Across the nine provinces, inequalities in mortality and life expectancy increased over 1990-2007, largely due to differences in HIV/AIDS, then decreased over 2007-2019. Demographic change and increases in non-communicable diseases nearly doubled the number of years lived with disability between 1990 and 2019. From 1990 to 2019, risk factor burdens generally shifted from communicable and nutritional disease risks to non-communicable disease and injury risks; unsafe sex remained the top risk factor. Despite widespread improvements in healthcare system performance, the greatest gains were generally in economically advantaged provinces. CONCLUSIONS Reductions in HIV/AIDS and related conditions have led to improved health since 2007, though most provinces still lag in key areas. To achieve health targets, provincial governments should enhance health investments and exchange of knowledge, resources and best practices alongside populations that have been left behind, especially following the COVID-19 pandemic.
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Vuong E, Hemmings SM, Mhlongo S, Chirwa E, Lombard C, Peer N, Abrahams N, Seedat S. Adiponectin gene polymorphisms and posttraumatic stress disorder symptoms among female rape survivors: an exploratory study. Eur J Psychotraumatol 2022; 13:2107820. [PMID: 35992226 PMCID: PMC9389930 DOI: 10.1080/20008066.2022.2107820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background: Rape is a common traumatic event which may result in the development of posttraumatic stress disorder (PTSD), yet few studies have investigated risk biomarkers in sexually traumatised individuals. Adiponectin is a novel cytokine within inflammatory and cardiometabolic pathways with evidence of involvement in PTSD. Objective: This prospective exploratory study in a sample of female rape survivors investigated the association of single nucleotide polymorphisms (SNPs) in the adiponectin gene (ADIPOQ) and posttraumatic stress symptom (PTSS) severity, and the interaction of these SNPs of interest with childhood trauma in modifying the association with PTSS severity. Method: The study involved 455 rape-exposed black South African women (mean age (SD), 25.3 years (±5.5)) recruited within 20 days of being raped. PTSS was assessed using the Davidson Trauma Scale (DTS) and childhood trauma was assessed using a modified version of the Childhood Trauma Scale-Short Form Questionnaire. Eight ADIPOQ SNPs (rs17300539, rs16861194, rs16861205, rs2241766, rs6444174, rs822395, rs1501299, rs1403697) were genotyped using KASP. Mixed linear regression models were used to test additive associations of ADIPOQ SNPs and PTSS severity at baseline, 3 and 6 months following rape. Results: The mean DTS score post-sexual assault was high (71.3 ± 31.5), with a decrease in PTSS severity shown over time for all genotypes. rs6444174TT genotype was inversely associated with baseline PTSS in the unadjusted model (β = -13.6, 95% CI [-25.1; -2.1], p = .021). However, no genotype was shown to be significantly associated with change in PTSS severity over time and therefore ADIPOQ SNP x childhood trauma interaction was not further investigated. Conclusion: None of the ADIPOQ SNPs selected for investigation in this population were shown to be associated with change in PTSS severity over a 6-month period and therefore their clinical utility as risk biomarkers for rape-related PTSD appears limited. These SNPs should be further investigated in possible gene-gene and gene-environment interactions.
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Irusen H, Burger H, Fernandez P, Esterhuizen T, Suliman S, Seedat S. Authors Response: COVID-19 Related Anxiety in Men With Localised Prostate Cancer at Tertiary Hospitals in Cape Town, South Africa. Cancer Control 2022; 29:10732748211062356. [PMID: 35420495 PMCID: PMC9014333 DOI: 10.1177/10732748211062356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Irusen H, Fernandez P, Van der Merwe A, Suliman S, Esterhuizen T, Lazarus J, Parkes J, Seedat S. Depression, Anxiety, and Their Association to Health-Related Quality of Life in Men Commencing Prostate Cancer Treatment at Tertiary Hospitals in Cape Town, South Africa. Cancer Control 2022; 29:10732748221125561. [PMID: 36112984 PMCID: PMC9478688 DOI: 10.1177/10732748221125561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Background Comorbid depression and anxiety in men with localised prostate cancer (CaP)
largely go undiagnosed and untreated and their effects on health-related
quality of life (HRQOL) in men with CaP should not be underestimated. We
examined the prevalence of depression and anxiety and its association with
HRQOL in men about to commence treatment for CaP and the differences between
treatment groups, radical prostatectomy (RP) and radiation therapy (RT). Method One hundred and seven participants from a longitudinal prospective
observational study assessing depression, anxiety and HRQOL in men with
localised CaP (DAHCaP), were used in this cross-sectional analysis. Data
were collected shortly before participants were scheduled to receive their
treatment. The Centre for Epidemiologic Studies Depression Scale (CES-D),
the State Trait Anxiety Inventory (STAI), the Memorial Anxiety Scale for
Prostate Cancer (MAX-PC), the European Organisation for Research and
Treatment in Cancer Quality of Life questionnaire (EORTC QLQ-C30) and (EORTC
QLQ-PR25) were used in this analysis. Results Symptoms of depression pre-treatment were noted in 39.3%, state anxiety 28%,
trait anxiety 31.4% and prostate cancer anxiety in 12.1% of participants.
Statistically significant correlations (P ≤ .05) with the
CES-D and a cluster of symptoms on the EORTC QLQ-C30 domains for Global
Health (rs = −.35), fatigue (rs = .38), pain
(rs = .32), dyspnoea (rs = .28), insomnia
(rs = .30) and finance (rs = .26) and EORTC
QLQ-PR25 domains for urinary symptoms (rs = .43), bowel
(rs = .43) and hormone replacement therapy (HRT)
(rs = .41) were observed. Statistically significant correlations were also noted between the STAI-S and
EORTC QLQ-C30 and EORTC QLQ-PR25. No statistically significant difference
was noted between treatments. Conclusion More men were depressed than anxious with significant associations with HRQOL
prior to commencement of treatment. CaP treatments should focus not only on
the prevailing indisposition but include a psychooncological and HRQOL
assessment at pre-treatment in high-risk individuals.
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Irusen H, Burger H, Fernandez PW, Van der Merwe A, Esterhuizen T, du Plessis DE, Seedat S. Decisional Conflict is Associated with Treatment Modality and not Disease Knowledge in South African Men with Prostate Cancer: Baseline Results from a Longitudinal Prospective Observational Study. Cancer Control 2022; 29:10732748221082791. [PMID: 35442835 PMCID: PMC9024077 DOI: 10.1177/10732748221082791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Decisional conflict (DC) is a psychological construct that an individual experiences in making a decision that involves risk, loss, regret, or challenges to one's values. This study assessed DC in a cohort of South African men undergoing curative treatment for localised prostate cancer (LPC). The objectives were to (1) to examine the association between DC and prostate cancer knowledge (PCK), demographics, state anxiety, prostate cancer anxiety and time to treatment and (2) to compare levels of DC between treatment groups [prostatectomy (RP) and external beam radiation (RT)]. METHOD Data, comprising the Decisional Conflict Scale (DCS), Prostate Cancer Knowledge (PCK), State-Trait Anxiety Inventory (STAI-S), the Memorial Anxiety Scale for Prostate Cancer (MAX-PC) and demographic data from 83 participants of a larger prospective longitudinal observational study examining depression, anxiety and health related quality of life (DAHCaP) were analysed. RESULTS The mean age of participants was 63 years (RP 61yrs and RT 65yrs; p< 0.001). Most were of mixed ancestry (72.3%). The total DCS scores between the treatment groups (RP 25.00 and RT 18.75; p = 0.037) and two DCS sub-scores-uncertainty (p = 0.033), and support (p = 0.048), were significantly higher in the RP group. A statistically significant negative correlation was observed between state anxiety and time between diagnosis and treatment in the RP group (Spearman's rho = -0.368; p = 0.030). There was no correlation between the DCS score and PCK within each treatment group (Spearman's rho RP = -0.249 and RT = -0.001). CONCLUSION Decisional conflict was higher in men undergoing RP. Men were more anxious in the RP group regarding the time treatment was received from diagnosis. No correlation was observed between DC and PCK. Pre-surgical management of DC should include shared decision making (SDM) which is cognisant of patients' values facilitated by a customised decision aid.
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Bröcker E, Olff M, Suliman S, Kidd M, Mqaisi B, Greyvenstein L, Kilian S, Seedat S. A clinician-monitored 'PTSD Coach' intervention: findings from two pilot feasibility and acceptability studies in a resource-constrained setting. Eur J Psychotraumatol 2022; 13:2107359. [PMID: 36212116 PMCID: PMC9542529 DOI: 10.1080/20008066.2022.2107359] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: The high prevalence of trauma exposure and consequent post-traumatic stress disorder (PTSD) is well documented in low- and middle-income countries, and most individuals with PTSD have limited access to treatment in these settings. Freely available internet-based interventions, such as PTSD Coach (web-based and mobile application), can help to address this gap and improve access to and efficiency of care. Objective: We conducted two pilot studies to evaluate the feasibility, acceptability, and preliminary effectiveness of PTSD Coach in a South African resource-constrained context. Method: Pilot 1: Participants with PTSD (n = 10) were randomized to counsellor-supported PTSD Coach Online (PCO) or enhanced treatment as usual. Pilot 2: Participants (n = 10) were randomized to counsellor-supported PTSD Coach Mobile App or self-managed PTSD Coach Mobile App. Feasibility and acceptability were assessed by comparing attrition rates (loss to follow-up), reviewing participant and counsellor feedback contained in fieldnotes, and analysing data on the 'Perceived helpfulness of the PTSD Coach App' (Pilot 2). PTSD symptom severity was assessed with the Clinician Administered PTSD Scale for DSM-5 (CAPS-5), changes between treatment and control groups were compared, the reliable change index (RCI) was calculated, and clinically significant changes were determined. Results: Three participants in Pilot 1 and two participants in Pilot 2 were lost to follow-up. Fieldnotes indicated that PTSD Coach Mobile App addressed identified computer literacy challenges in Pilot 1 (PCO); and a shorter duration of intervention (from 8 to 4 weeks) was associated with less attrition. The RCI indicated that four participants in Pilot 1 and eight participants in Pilot 2 experienced significant improvement in PTSD symptom severity. Conclusions: The preliminary results suggest that both platforms can alleviate PTSD symptoms, and that the involvement of volunteer counsellors is beneficial. The use of PTSD Coach Mobile App may be more feasible than the online version (PCO) in our setting. HIGHLIGHTS Research on supported PTSD Coach interventions is limited in resource-constrained settings.Both volunteer counsellor-supported PTSD Coach Online and the PTSD Coach Mobile App showed preliminary reliable and clinically significant changes.The use of PTSD Coach Mobile App seems more feasible than the volunteer counsellor-supported PTSD Coach Online.
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Spies G, Ahmed-Leitao F, Hoddinott G, Seedat S. Effects of unhealthy alcohol use on brain morphometry and neurocognitive function among people with HIV. J Neurovirol 2021; 28:35-45. [PMID: 34882280 DOI: 10.1007/s13365-021-01027-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/13/2021] [Accepted: 11/02/2021] [Indexed: 10/19/2022]
Abstract
Individual impacts of alcohol misuse and HIV on brain structure and function have been well demonstrated; however, the potential compounded effect of these conditions is seldom considered, despite the high prevalence of alcohol use in HIV infection. We aimed to determine the effects of unhealthy alcohol use on brain morphometry and cognitive function amongst people with HIV (PWH). In 27 (50.9%) HIV-positive users of alcohol and 26 (49.1%) HIV-positive abstainers from alcohol, results revealed significant differences for left and right amygdala (p < 0.01), left and right hippocampus (p = 0.05), left and right posterior cingulate (p < 0.01), left and right precuneus (p < 0.01), left insula (p < 0.01), left and right caudate (p < 0.01), right thalamus (p < 0.01), and corpus callosum (p < 0.05). Mean volume of these regions was significantly smaller in HIV-positive alcohol users compared to HIV-positive abstainers. Homogeneity of slopes ANCOVA revealed significant associations between anterior cingulate cortex, precuneus, amygdala, hippocampus, and insula volumes and cognitive function in the domains of learning and delayed recall, motor function, speed of information processing, executive function, attention/working memory, and language. Among PWH, unhealthy alcohol use is associated with negative effects on brain structure and cognitive function.
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Womersley JS, Xulu KR, Sommer J, Hinsberger M, Kidd M, Elbert T, Weierstall R, Kaminer D, Malan-Müller S, Seedat S, M J Hemmings S. Associations between telomere length and symptoms of posttraumatic stress disorder and appetitive aggression in trauma-exposed men. Neurosci Lett 2021; 769:136388. [PMID: 34890718 DOI: 10.1016/j.neulet.2021.136388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 11/29/2021] [Accepted: 12/03/2021] [Indexed: 11/19/2022]
Abstract
Exposure to community violence is common in South Africa and negatively impacts on biopsychosocial health. Posttraumatic stress disorder (PTSD) is characterised by symptoms of intrusion, avoidance, hypervigilance and negative alterations in cognition and mood, and can develop consequent to trauma exposure. Individuals who repeatedly experience and witness violence may also come to view it as appealing and rewarding. This appetitive aggression (AA) increases the likelihood of perpetrating violence. Telomeres are repetitive nucleotide sequences that protect the ends of chromosomes. Telomere length (TL) attrition is a stress-sensitive marker of biological aging that has been associated with a range of psychiatric disorders. This study investigated the cross-sectional relationship between TL and symptoms of PTSD and AA in South African men residing in areas with high community violence. PTSD and AA symptom severity was assessed in 290 men using the Posttraumatic Stress Disorder Symptom Scale - Interview (PSS-I) and Appetitive Aggression Scale (AAS), respectively. Quantitative polymerase chain reaction was performed on DNA extracted from saliva and used to calculate relative TL (rTL). Regression models were used to assess the relationships between rTL and PSS-I and AAS scores. Network analyses using EBIC glasso methods were performed using rTL and items from each of the AAS and PSS-I measures. Both PSS-I (p = 0.023) and AAS (p = 0.016) scores were positively associated with rTL. Network analyses indicated that rTL was weakly related to two PSS-I and five AAS items but performed poorly on indicators of centrality and was not strongly associated with measure items either directly or indirectly. The positive association between rTL and measures of AA and PTSD may be due to the induction of protective homeostatic mechanisms, which reduce TL attrition, following early life trauma exposure.
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van Rensburg BJ, Kotzé C, Moxley K, Subramaney U, Zingela Z, Seedat S. Profile of the Current Psychiatrist Workforce in South Africa: Establishing a Baseline for Human Resource Planning and Strategy. Health Policy Plan 2021; 37:492-504. [PMID: 34871396 DOI: 10.1093/heapol/czab144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/01/2021] [Accepted: 12/05/2021] [Indexed: 11/13/2022] Open
Abstract
The WHO Global Health Observatory Data Repository reports South Africa with 1.52 psychiatrists/100 000 of the population among other countries in Africa with 0.01 psychiatrists/100 000 (Chad, Burundi and Niger) to more than 30/100 000 for some countries in Europe. The overall situation, while being cognizant that mental health care is not only provided by specialist psychiatrists and that the current treatment gap may have to be addressed by strategies such as appropriate task sharing, suggests that there are actually too few psychiatrists to meet the country's mental health care needs. To address the need to develop a strategy to increase the local specialist training and examination capacity, a situational review of currently practicing psychiatrists was undertaken by the [BLINDED] and the [BLINDED], using the South African Society of Psychiatrists (SASOP) membership database. The number, distribution and attributes of practicing psychiatrists were compared with international figures on the ratio of psychiatrists/100 000 population. In April 2019 there were 850 qualified psychiatrists actively practicing in the country and based on the national population figure of 55.6 million people (2016 Census), the psychiatrists/100 000 ratio was 1.53. This indicates no improvement between 2016 to 2019. From the SASOP database, we determined that about 80% of psychiatrists are working in the private sector - a much higher proportion than is usually quoted. As the vast majority of psychiatrists are practicing in urban areas in two provinces, Gauteng (n=350) and Western Cape (n=292), the ratio of psychiatrists/100 000 in these areas is relatively higher, at 2.6 and 5.0 respectively. Whereas rural areas in South Africa are largely without specialist mental health expertise, at a rate of 0.03/100 000 population. This investigation provides a discipline-specific situational review of the attributes and distribution of the current workforce of specialists in the country.
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111
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Beath N, Moxley K, Subramaney U, Zingela Z, Chiliza B, Joska J, Kotzé C, Koen L, Seedat S. Factors Affecting Specialist Psychiatry Training in South Africa: Are Psychiatry Residents Satisfied with Their Training? ACADEMIC PSYCHIATRY : THE JOURNAL OF THE AMERICAN ASSOCIATION OF DIRECTORS OF PSYCHIATRIC RESIDENCY TRAINING AND THE ASSOCIATION FOR ACADEMIC PSYCHIATRY 2021; 45:688-697. [PMID: 33973163 DOI: 10.1007/s40596-021-01470-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 03/23/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVE The authors investigated South African psychiatry residents' satisfaction with their training, physical, and mental health to inform the development of a strategy to improve the quality and experiences of training. METHOD A cross-sectional online survey was undertaken to assess the factors affecting residents' satisfaction with their current training program. The authors conducted a comparative analysis of residents across the training institutions in South Africa. RESULTS Of 179 psychiatry residents in the country, 70 responses were received (39.1% response rate). Most were satisfied with the overall quality of their training, various aspects of training, and access to training resources. However, significant differences across universities were identified with regard to residents' perception of the quality of their training, quality of their experiences, access to training resources, quality of supervision, and clinical workload. More than a quarter were dissatisfied with their mental and/or physical health. The top four factors contributing to stress were all training-related. CONCLUSION While most residents were satisfied with their specialist training, institutional differences in access to training and training resources, quality of training, and availability of quality supervision were evident and need to be addressed to ensure equitable training. There is a need to actively address staff shortages not only for clinical cover during protected academic time but also to meet training needs. A centralized examination process should remain in place to ensure that there is a national standard. Workplace-based assessments could facilitate standardization across institutions, should these assessments be standardized and accompanied by rigorous training of supervisors.
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Ruhanya V, Jacobs GB, Paul RH, Joska JA, Seedat S, Nyandoro G, Engelbrecht S, Glashoff RH. Plasma Cytokine Biomarker Cutoff Values for HIV-Associated Neurocognitive Impairment in Adults. Viral Immunol 2021; 34:689-696. [PMID: 34807730 DOI: 10.1089/vim.2021.0047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Diagnosing HIV-associated neurocognitive impairment in most high-burden, but resource-constrained, settings is difficult due to the unavailability of specialist neurologists and neuropsychologists in primary health care centers. New tests that are easy to perform, based on virological and host immune response biomarkers, may be valuable in the diagnosis of HIV-associated neurocognitive disorder. The receiver operator characteristic curve analysis was used to investigate the diagnostic accuracy of threshold/cutoff concentrations for the peripheral lymphocyte proviral load and plasma biomarkers as diagnostic candidates for neurocognitive impairment in 133 HIV-infected individuals, using global deficit scores as the clinical gold standard. Forty-five (33.83%) of the participants had HIV-associated neurocognitive impairment, with 17.29% being mildly impaired and 16.54% moderately impaired. IL-2 had the best performance as a diagnostic tool for neurocognitive impairment with sensitivity of 67% and specificity of 52%, while the lowest performance was IL-6 with 65% sensitivity and 39% specificity. MIP-1α had the highest precision for the cutoff value, as indicated by the narrow 95% confidence interval (CI) (2.23-3.27), followed by IL-2 with 95% CI (3.02-5.12). RANTES had least precision, as shown by the widest 95% CI (135-9,487.61). For clinical markers of HIV diagnosis and monitoring, the lymphocyte proviral load cutoff value of 145 genome copies/million cells had the highest accuracy with 60% sensitivity and 51% specificity. The plasma viral load had an imperfect balance of 46% sensitivity and 78% specificity. The study demonstrated low to medium diagnostic accuracy of plasma cytokine biomarker cutoff values for defining neurocognitive impairment in people living with HIV.
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Nöthling J, Abrahams N, Toikumo S, Suderman M, Mhlongo S, Lombard C, Seedat S, Hemmings SMJ. Genome-wide differentially methylated genes associated with posttraumatic stress disorder and longitudinal change in methylation in rape survivors. Transl Psychiatry 2021; 11:594. [PMID: 34799556 PMCID: PMC8604994 DOI: 10.1038/s41398-021-01608-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 08/01/2021] [Accepted: 09/02/2021] [Indexed: 12/24/2022] Open
Abstract
Rape is associated with a high risk for posttraumatic stress disorder (PTSD). DNA methylation changes may confer risk or protection for PTSD following rape by regulating the expression of genes implicated in pathways affected by PTSD. We aimed to: (1) identify epigenome-wide differences in methylation profiles between rape-exposed women with and without PTSD at 3-months post-rape, in a demographically and ethnically similar group, drawn from a low-income setting; (2) validate and replicate the findings of the epigenome-wide analysis in selected genes (BRSK2 and ADCYAP1); and (3) investigate baseline and longitudinal changes in BRSK2 and ADCYAP1 methylation over six months in relation to change in PTSD symptom scores over 6 months, in the combined discovery/validation and replication samples (n = 96). Rape-exposed women (n = 852) were recruited from rape clinics in the Rape Impact Cohort Evaluation (RICE) umbrella study. Epigenome-wide differentially methylated CpG sites between rape-exposed women with (n = 24) and without (n = 24) PTSD at 3-months post-rape were investigated using the Illumina EPIC BeadChip in a discovery cohort (n = 48). Validation (n = 47) and replication (n = 49) of BRSK2 and ADCYAP1 methylation findings were investigated using EpiTYPER technology. Longitudinal change in BRSK2 and ADCYAP1 was also investigated using EpiTYPER technology in the combined sample (n = 96). In the discovery sample, after adjustment for multiple comparisons, one differentially methylated CpG site (chr10: 61385771/ cg01700569, p = 0.049) and thirty-four differentially methylated regions were associated with PTSD status at 3-months post-rape. Decreased BRSK2 and ADCYAP1 methylation at 3-months and 6-months post-rape were associated with increased PTSD scores at the same time points, but these findings did not remain significant in adjusted models. In conclusion, decreased methylation of BRSK2 may result in abnormal neuronal polarization, synaptic development, vesicle formation, and disrupted neurotransmission in individuals with PTSD. PTSD symptoms may also be mediated by differential methylation of the ADCYAP1 gene which is involved in stress regulation. Replication of these findings is required to determine whether ADCYAP1 and BRSK2 are biomarkers of PTSD and potential therapeutic targets.
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Wolmarans DW, Prinsloo M, Seedat S, Stein DJ, Harvey BH, de Brouwer G. Escitalopram and lorazepam differentially affect nesting and open field behaviour in deer mice exposed to an anxiogenic environment. Neurosci Res 2021; 177:85-93. [PMID: 34736961 DOI: 10.1016/j.neures.2021.10.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/21/2021] [Accepted: 10/28/2021] [Indexed: 11/29/2022]
Abstract
Large nest building behaviour (LNB), as expressed by a subpopulation of laboratory housed deer mice (Peromyscus maniculatus bairdii), is persistent and repetitive. However, the response of LNB to an anxiogenic environment has not yet been investigated. Here, we employed LNB and normal nesting (NNB) expressing mice, subdivided into three drug-exposed groups per cohort, i.e. water (28 days), escitalopram (50 mg/kg/day, 28 days) and lorazepam (2 mg/kg/day; 4 days) to investigate this theme. During the last 4 days of drug exposure, mice were placed inside anxiogenic open field arenas which contained a separate enclosed and dark area for 4 consecutive nights during which open field and/or nest building assessments were performed. We show that LNB behaviour in deer mice is stable, irrespective of the anxiety-related context in which it is assessed, and that LNB mice find an open field arena to be less aversive compared to NNB mice. Escitalopram and lorazepam differentially affected the nesting and open field behaviour of LNB expressing mice, confirming deer mouse LNB as a repetitive behavioural phenotype that is related to a compulsive-like process which is regulated by the serotonergic system.
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Nöthling J, Laughton B, Seedat S. Maternal depression and infant social withdrawal as predictors of behaviour and development in vertically HIV-infected children at 3.5 years. Paediatr Int Child Health 2021; 41:268-277. [PMID: 35235497 DOI: 10.1080/20469047.2021.2023436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND In low- and middle-income countries, there is a high prevalence of post-partum depression and it is often associated with HIV status. Maternal depression negatively affects mothering and can lead to social withdrawal in infants. Maternal depression and infant social withdrawal can have deleterious long-term effects on children's behaviour and neurodevelopmental trajectories. AIM To investigate whether maternal depression and infant social withdrawal at 10-12 months post-partum were significant predictors of child behaviour and development at 42 months. METHOD Seventy-four mother-infant dyads living with HIV were followed in a prospective, longitudinal design. Mothers were assessed for depression using the Center for Epidemiologic Studies Depression scale (CES-D). Infant social withdrawal was assessed by the modified Alarm Distress Baby Scale (m-ADBB), and development and behaviour were evaluated by the Griffiths Mental Development Scales (GMDS) and the Child Behavior Checklist (CBCL), respectively. RESULTS Maternal depression explained 4.8% of the variance in child behaviour (β = 0.98, t = 2.05, p < 0.05) and 10.3% of the variance in development (β = -0.30, t = -2.66, p < 0.05). Infant social withdrawal was not a significant predictor of behaviour (β = 3.27, t = 1.36, p = 0.18), but it did uniquely explain 7% of the variance in development (β = -1.32, t = -2.48, p < 0.05). CONCLUSION In the context of HIV, screening for maternal depression and the quality of mother-infant interactions are important (especially in the 1st year post-partum), given the significant long-term impact they have on behaviour and neurodevelopment. ABBREVIATIONS ANOVA: analysis of variance; ART: antiretroviral therapy; CBCL: Child Behavioral Checklist; CES-D: Center for Epidemiologic Studies Depression Scale; CHEI: children HIV-exposed and infected; CHER: Children with HIV Early Antiretroviral Treatment Trial; CHEU: children HIV-exposed and uninfected; CHUU: children HIV-unexposed and -uninfected; GMDS: Griffiths Mental Development Scales; HIV: human immunodeficiency virus; LMIC: low- and middle-income countries; m-ADBB: modified Alarm Distress Baby Scale; NRF: National Research Foundation; SAMRC: South African Medical Research Council; WHO: World Health Organization.
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Womersley JS, Spies G, Tromp G, Seedat S, Hemmings SMJ. Longitudinal telomere length profile does not reflect HIV and childhood trauma impacts on cognitive function in South African women. J Neurovirol 2021; 27:735-749. [PMID: 34448146 PMCID: PMC8602727 DOI: 10.1007/s13365-021-01009-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 07/12/2021] [Accepted: 08/03/2021] [Indexed: 12/17/2022]
Abstract
HIV-associated neurocognitive disorders (HAND) present a challenge in South Africa where the burden of HIV infection is the highest. Identification of biological correlates of HAND is required to improve diagnosis and inform interventions. Telomeres maintain genomic integrity and their shortening is a marker of biological aging sensitive to environmental influences. This study examined relative telomere length (rTL) as a predictor of cognitive function in the context of HIV and childhood trauma (CT), a risk factor for HAND. Two hundred and eighty-six women completed a neurocognitive assessment battery and the Childhood Trauma Questionnaire-Short Form (CTQ). Quantitative polymerase chain reaction for amplification of telomeric repeats and the reference gene human beta-globin was used to calculate rTL. Neurocognitive and rTL assessments were repeated at 1 year in 110 participants. Cross-sectional and longitudinal data were assessed using linear and mixed models, respectively. Participants with HIV (n = 135 in cross-sectional and n = 62 in longitudinal study groups) reported more severe CT and had shorter baseline rTL compared to seronegative controls. Participants without HIV had a greater 1-year decline in rTL. Global cognitive and attention/working memory scores declined in participants with HIV. Our data indicate that baseline rTL in the context of CT and HIV did not predict decline in cognitive scores. HIV-associated pathophysiological processes driving cognitive decline may also engage mechanisms that protect against telomere shortening. The results highlight the importance of examining biological correlates in longitudinal studies.
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Seedat S. Commentary on the special issue on disproportionate exposure to trauma: Trauma, stress, and adversities and health disparities among disenfranchised groups globally during the COVID pandemic. J Trauma Stress 2021; 34:1061-1067. [PMID: 34642999 PMCID: PMC8662206 DOI: 10.1002/jts.22746] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 09/14/2021] [Indexed: 11/11/2022]
Abstract
The papers in this Journal of Traumatic Stress special issue on disproportionate adversity cover the gamut of discrimination traumas and stressors, including microaggressions, a more insidious forms of discrimination, and their often-devastating and wide-ranging mental health sequelae, in disproportionately affected disenfranchised groups. Discrimination based on race, ethnicity, gender, and sexual orientation commonly confers cumulative and chronic effects. In the field of traumatic stress studies, several types of identity-linked traumatic events have been identified and empirically investigated as posttraumatic stress disorder (PTSD)-producing experiences. Collectively, the 13 papers included in this special issue raise questions about the definition, conceptualization, and categorization of various forms of explicit and implicit identity-linked trauma. These papers highlight the need for acceptance of a shared nomenclature and better differentiation of both causal and correlational associations with acute and chronic PTSD, depression, suicide risk, alcohol misuse, and other mental health outcomes. In this commentary, the discussion is extended to COVID-19, a disease that has been globally devastating for many. On multiple levels (i.e., physical, mental, emotional, economic, and social), COVID-19 has magnified the prepandemic fault lines of race, ethnicity, gender, gender identity, and sexual orientation. Applying a syndemic framework to the health impact of COVID-19 and, arguably, the most pervasive identity linked epidemic worldwide-systemic racism-brings perspective to the biological and social forces that are likely to be driving the convergence of COVID-19, systemic racism, and chronic health inequities, and may be informative in guiding evidence-based strategies for managing racial trauma in the context of COVID-19.
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Hambrick EP, Seedat S, Perry BD. Editorial: How the Timing, Nature, and Duration of Relationally Positive Experiences Influence Outcomes in Children With Adverse Childhood Experiences. Front Behav Neurosci 2021; 15:755959. [PMID: 34552475 PMCID: PMC8450360 DOI: 10.3389/fnbeh.2021.755959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 08/13/2021] [Indexed: 11/13/2022] Open
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Ruhanya V, Jacobs GB, Naidoo S, Paul RH, Joska JA, Seedat S, Nyandoro G, Engelbrecht S, Glashoff RH. Impact of Plasma IP-10/CXCL10 and RANTES/CCL5 Levels on Neurocognitive Function in HIV Treatment-Naive Patients. AIDS Res Hum Retroviruses 2021; 37:657-665. [PMID: 33472520 DOI: 10.1089/aid.2020.0203] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Immune activation, which is accompanied by the production of proinflammatory cytokines, is a strong predictor of disease progression in HIV infection. Inflammation is critical in neuronal damage linked to HIV-associated neurocognitive disorders. We examined the relationship between plasma cytokine levels and deficits in neurocognitive function. Multiplex profiling by Luminex® technology was used to quantify 27 cytokines/chemokines from 139 plasma samples of people living with HIV (PLWH). The relationship of plasma cytokine markers, clinical parameters, and cognitive impairment, was assessed using Spearman correlations. Partial least squares regression and variable importance in projection scores were used for further evaluation of the association. Forty-nine (35.3%) participants exhibited neurocognitive impairment based on a global deficit score (GDS) of at least 0.5 and 90 (64.7%) were classified as nonimpaired. Twenty-three (16.5%) initiated on combination antiretroviral therapy for 4 weeks before cognitive assessment and 116 (83.5%) were not on treatment. We identified five proinflammatory cytokines that were significant predictors of GDS namely, IP-10 (β = 0.058; p = .007), RANTES (β = 0.049; p = .005), IL-2 (β = 0.047, p = .006), Eotaxin (β = 0.042, p = .003), and IL-7 (β = 0.039, p = .003). IP-10 and RANTES were the strongest predictors of GDS. Both cytokines correlated with plasma viral load and lymphocyte proviral load and were inversely correlated with CD4+ T cell counts. IP-10 and RANTES formed a separate cluster with highest proximity. Study findings describe novel associations among IP-10, RANTES, cognitive status, plasma viral load, and cell-associated viral load.
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Schwartz B, Kaminer D, Hardy A, Nöthling J, Seedat S. Gender Differences in the Violence Exposure Types That Predict PTSD and Depression in Adolescents. JOURNAL OF INTERPERSONAL VIOLENCE 2021; 36:8358-8381. [PMID: 31130044 DOI: 10.1177/0886260519849691] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Both specific forms of violence and polyvictimization have been associated with an increased risk for negative mental health outcomes in youth. Despite evidence of gender differences in trauma experience and impact, gender patterns in the comparative contribution of specific violence exposures versus polyvictimization to mental health outcomes have seldom been explored. The few existing studies have all been conducted in high-income countries, while there is a dearth of research from lower and middle-income countries. This study examined the contribution of witnessed and direct community violence, domestic violence, sexual abuse, and different levels of polyvictimization to the severity of posttraumatic stress disorder (PTSD) and depression in a clinic sample of children and adolescents (n = 310) in South Africa. Although polyvictimization rates were high across both genders, polyvictimization posed differential risks for boys and girls. For girls, higher levels of polyvictimization, but not individual violence types, predicted both PTSD and depression severity. For boys, polyvictimization did not predict PTSD or depression severity. Higher levels of victimization in the community predicted PTSD severity among boys, while no forms of violence predicted depression. The findings confirm the value of examining gender patterns in the risk for posttraumatic sequelae posed by exposure to specific and cumulative forms of violence. Implications for interventions with youth in high-violence contexts such as South Africa are considered.
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Abstract
Soraya Seedat and Marta Rondon examine how gender inequities in the time allocated to unpaid work, exacerbated by covid-19, are affecting women’s mental health
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Verhey R, Brakarsh J, Gibson L, Shea S, Chibanda D, Seedat S. Potential Resilience to Post-traumatic Stress Disorder and Common Mental Disorders among Lay Health Workers Working on the Friendship Bench Programme in Zimbabwe. J Health Care Poor Underserved 2021; 32:1604-1618. [PMID: 34421051 DOI: 10.1353/hpu.2021.0152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE The Friendship Bench is a successful task-shifting intervention for addressing common mental disorders in Zimbabwe. The intervention takes a cognitive behavioural therapy and problem-solving approach provided by lay health workers (LHWs). The LHWs live in the same environment as their clients and are thus exposed to the same traumas and stressors as are their clients. Little is known about the long-term psychological effects on LHWs involved in this type of work. METHODS A random sample of LHWs (n=182) was assessed using the Posttraumatic Stress Disorder Checklist (PCL-5) and the Shona Symptom Questionnaire (SSQ-14), both locally validated. RESULTS The prevalence of PTSD and CMD was low among all surveyed LHWs. Eleven (6%) and 17 (11%) presented with probable PTSD and CMD, respectively. CONCLUSION Despite living and working in the same settings as their clients, the Friendship Bench LHWs show good mental health outcomes.
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Hasken JM, Marais AS, de Vries M, Joubert B, Cloete M, Botha I, Symington SR, Kalberg WO, Buckley D, Robinson LK, Manning MA, Parry CDH, Seedat S, Hoyme HE, May PA. Gestational age and birth growth parameters as early predictors of fetal alcohol spectrum disorders. Alcohol Clin Exp Res 2021; 45:1624-1638. [PMID: 34342019 DOI: 10.1111/acer.14656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 05/17/2021] [Accepted: 06/04/2021] [Indexed: 12/28/2022]
Abstract
OBJECTIVE To investigate gestational age and growth at birth as predictors of fetal alcohol spectrum disorders (FASD). METHODS The sample analyzed here comprises 737 randomly selected children who were assessed for growth, dysmorphology, and neurobehavior at 7 years of age. Maternal interviews were conducted to ascertain prenatal alcohol exposure and other maternal risk factors. Birth data originated from clinic records and the data at 7 years of age originated from population-based, in-school studies. Binary linear regression assessed the relationship between preterm birth, small for gestational age (SGA), and their combination on the odds of a specific FASD diagnosis or any FASD. RESULTS Among children diagnosed with FASD at 7 years of age (n = 255), a review of birth records indicated that 18.4% were born preterm, 51.4% were SGA, and 5.9% were both preterm and SGA. When compared to non-FASD controls (n = 482), the birth percentages born preterm, SGA, and both preterm and SGA were respectively 12.0%, 27.7%, and 0.5%. Mothers of children with FASD reported more drinking during all trimesters, higher gravidity, lower educational attainment, and older age at pregnancy. After controlling for usual drinks per drinking day in the first trimester, number of trimesters of drinking, maternal education, tobacco use, and maternal age, the odds ratio of an FASD diagnosis by age 7 was significantly associated with SGA (OR = 2.16, 95% CI: 1.35 to 3.45). SGA was also significantly associated with each of the 3 most common specific diagnoses within the FASD continuum: fetal alcohol syndrome (FAS; OR = 3.1), partial FAS (OR = 2.1), and alcohol-related neurodevelopmental disorder (OR = 2.0). CONCLUSION SGA is a robust early indicator for FASD in this random sample of children assessed at 7 years of age.
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Ramos-Sanchez CP, Schuch FB, Seedat S, Louw QA, Stubbs B, Rosenbaum S, Firth J, van Winkel R, Vancampfort D. The anxiolytic effects of exercise for people with anxiety and related disorders: An update of the available meta-analytic evidence. Psychiatry Res 2021; 302:114046. [PMID: 34126464 DOI: 10.1016/j.psychres.2021.114046] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 05/30/2021] [Indexed: 12/20/2022]
Abstract
Exercise as a treatment option for people with mental disorders is a field of growing interest. The increased number of published randomized controlled trials (RCTs) evaluating the effects of exercise in the treatment of anxiety and related disorders in recent years calls for an update of the available meta-analytic evidence. Electronic databases (PubMed, CINAHL, PSYCArticles, and Embase) were searched up to 17.2.2021, for RCTs evaluating the effects of exercise on anxiety and stress symptoms in adults with anxiety and related disorders. A random effects meta-analysis was conducted. A total of 13 RCTs comprising 731 adult participants (exercise n=376; control n=355) were included. Exercise had a small, bordering medium, but statistically significant effect on decreasing anxiety symptoms compared to control condition (standardized mean difference=-0.425, 95%CI -0.67 to -0.17; I2 = 47.9%) in people with anxiety and related disorders. Our meta-analysis updates the existing evidence supporting exercise as an efficacious intervention for anxiety and related disorders. Although the updated meta-analytic evidence is less heterogenous than previously reported, future research is still needed to explore the factors moderating the effects of exercise on outcome such as frequency, intensity, duration of the sessions, and type of exercise and qualification of the provider in more detail.
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van der Watt ASJ, Menze N, Moxley K, Mbanga I, Seedat S, Dass-Brailsford P. Self-identification, mode of diagnosis and treatment, and perceptions of relationships with medical providers of South African Xhosa-speaking traditional healers. Transcult Psychiatry 2021; 58:573-584. [PMID: 34082637 DOI: 10.1177/13634615211015071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
There is widespread use of traditional medicine in treating common mental disorders in South Africa. We aimed to (i) explore the self-identification of traditional healers (THs; how they refer to themselves, e.g., as healer, spiritualist, sangoma, etc.); (ii) determine if different types of THs treat different conditions (physical/psychological) or use different modes of diagnosis and treatment; (iii) identify factors that influence the willingness of THs to refer patients to biomedical hospitals; and (iv) compare TH practices between two provinces. Participants included Xhosa-speaking THs (mean age = 54.10, SD = 13.57 years) from the Western (n = 50) and Eastern (n = 68) Cape provinces. Participants completed a questionnaire regarding self-identification, mode of diagnosis/treatment, relationship with biomedical hospitals, type of condition(s) treated, and a Patient Health Questionnaire. There were significant associations between the type of TH (as self-identified) and (i) mode of diagnosis, (ii) mode of treatment, and (iii) type of condition(s) treated. Spiritualists, male THs, and THs who had previously been hospitalised for a mental disorder were more likely to treat mental disorders. THs who had previously been hospitalised for mental disorders were more likely to report a willingness to refer patients to biomedical hospitals. Findings highlight the complex practices of Xhosa-speaking THs. Collaboration between THs and mental health care professionals could be facilitated by focusing on male THs, spiritualists, and THs who have previously been hospitalised for mental illness. Future research should provide clearer operational definitions of the type of TH included.
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