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1.
BMC Health Serv Res ; 24(1): 7, 2024 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-38172856

RESUMO

BACKGROUND: The Covid-19 pandemic has exacerbated pre-existing inequalities and increased adversity and challenges for vulnerable and marginalised communities worldwide. In the UK, the Voluntary Community and Social Enterprise (VCSE) sector play a vital role in supporting the health and wellbeing of people who are marginalised or experiencing multiple complex needs. However, only a small number of studies have focused on the impact that Covid-19 had on the VCSE sector. METHODS: As part of a Health Inequalities Impact Assessment (HIIA), we conducted qualitative focus groups with staff and volunteers from five organisations to examine short, medium and longer-term impacts of Covid-19 upon the VCSE sector in Northern England. Nine online focus groups were conducted between March and July 2021. FINDINGS: Focus group transcripts were analysed using Framework Analysis and yielded three central themes: (1) exacerbation of pre-existing inequalities, adversity and challenges for vulnerable and marginalised populations; (2) the 'price' of being flexible, innovative and agile for VCSE staff and volunteers; and (3) the voluntary sector as a 'lifeline' - organisational pride and resilience. CONCLUSIONS: While the voluntary sector 'adapted at pace' to provide support during Covid-19 and in its continued aftermath, this resilience has potentially come at the cost of workforce and volunteer wellbeing, compounded by political obstacles and chronic shortage in funding and support. The VCSE sector has a vital role to play in the post-lockdown 'levelling up' agenda. The expertise, capacity and resilience of VCSE organisations, and their ability to respond to Covid-19, should be celebrated, recognised and supported adequately to maintain its resilience. To not do so threatens the sector's sustainability and risks jeopardising attempts to involve the sector in addressing the social determinants of health.


Assuntos
COVID-19 , Resiliência Psicológica , Humanos , Grupos Focais , COVID-19/epidemiologia , Pandemias , Controle de Doenças Transmissíveis , Inglaterra/epidemiologia
2.
Gynecol Oncol ; 160(3): 688-695, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33390325

RESUMO

BACKGROUND: EP0057 (formerly CRLX101) is an investigational nanoparticle-drug conjugate (NDC) of a cyclodextrin-based polymer backbone plus camptothecin, a topoisomerase-1 inhibitor. Prior studies showed efficacy in recurrent or persistent, epithelial ovarian, fallopian tube or primary peritoneal cancer (EOC). METHODS: This phase Ib/2 trial assessed safety and efficacy of EP0057 Q2W plus weekly paclitaxel in patients with EOC. The recommended phase 2 dose (RP2D) was identified using a 3+3 design. The single-arm phase 2 assessed overall response (ORR) per RECIST 1.1 in patients previously treated with bevacizumab. Secondary objectives included progression free survival (PFS) and duration of response. RESULTS: The RP2D was established as 15 mg/m2 EP0057 Q2W plus 80 mg/m2 paclitaxel administered 3 weeks on/1 week off. Nine patients enrolled on phase 1b, with no DLTs; 21 additional patients enrolled on phase 2. All completed >1 cycle. Median age was 62 (44-76) years, 57% ≥3 prior therapies. For the primary analysis, 6/19 patients with prior bevacizumab had confirmed responses (ORR=31.6% (95% CI: 15.4% to 54.0%)) including one complete response (CR). Median PFS was 5.4 months. Most common grade 3/4 adverse events attributed to treatment were decreased neutrophil count (13, 43%) and anemia (3, 10%). CONCLUSIONS: Although the observed ORR was not statistically better than the historical control rate, EP0057 remains an interesting option for treatment of recurrent EOC. EP0057 exhibits high plasma drug retention, slow clearance, and controlled slow release of CPT from the polymer when administered alone and with paclitaxel. (NCT02389985) 242 words.


Assuntos
Antineoplásicos Fitogênicos/uso terapêutico , Neoplasias das Tubas Uterinas/tratamento farmacológico , Neoplasias Ovarianas/tratamento farmacológico , Paclitaxel/uso terapêutico , Neoplasias Peritoneais/tratamento farmacológico , Adulto , Idoso , Antineoplásicos Fitogênicos/farmacologia , Feminino , Humanos , Pessoa de Meia-Idade , Paclitaxel/farmacologia , Intervalo Livre de Progressão
3.
Pediatr Blood Cancer ; 66(3): e27505, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30345617

RESUMO

BACKGROUND: Delta granule storage pool deficiency (δ-SPD) is a rare platelet disorder in which a deficiency of platelet granules leads to poor aggregation, resulting in varying clinical bleeding phenotypes. Children with δ-SPD have variable laboratory results, making the proper diagnosis and evaluation controversial. OBJECTIVES: To describe the demographic and laboratory trends of this population and to assess the value of electron microscopy in diagnostic evaluation and its correlation to bleeding symptoms. METHODS: We performed a retrospective review of 109 pediatric patients diagnosed with δ-SPD. We collected demographic information and bleeding scores using a validated bleeding assessment tool. A descriptive and exploratory analysis was performed. RESULTS: The majority of patients were female, with an average age at diagnosis of 11.61 years. Females were diagnosed at a significantly older age presenting most often with menorrhagia, while males presented most commonly with epistaxis. The majority showed normal lumiaggregometry, the mean platelet electron microscopy (PEM) value was 2.37, and the mean bleeding score was 6. Bleeding assessment tool and PEM had a significantly weak correlation. CONCLUSIONS: Patients with more dense granules per platelet had higher bleeding scores than those with fewer dense granules per platelet. The current body of evidence does not favor the use of PEM in routine clinical practice, and results are difficult to interpret. In patients with severe mucocutaneous bleeding symptoms and normal platelet aggregation studies, consideration should be given to an alternative diagnosis and further evaluation is warranted.


Assuntos
Hemorragia/complicações , Microscopia Eletrônica/métodos , Agregação Plaquetária , Deficiência do Pool Plaquetário/diagnóstico , Índice de Gravidade de Doença , Adolescente , Criança , Feminino , Seguimentos , Humanos , Masculino , Deficiência do Pool Plaquetário/etiologia , Valor Preditivo dos Testes , Estudos Retrospectivos
4.
Psychol Med ; 48(2): 279-293, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28651666

RESUMO

BACKGROUND: The unique phenotypic and genetic aspects of obsessive-compulsive (OCD) and attention-deficit/hyperactivity disorder (ADHD) among individuals with Tourette syndrome (TS) are not well characterized. Here, we examine symptom patterns and heritability of OCD and ADHD in TS families. METHOD: OCD and ADHD symptom patterns were examined in TS patients and their family members (N = 3494) using exploratory factor analyses (EFA) for OCD and ADHD symptoms separately, followed by latent class analyses (LCA) of the resulting OCD and ADHD factor sum scores jointly; heritability and clinical relevance of the resulting factors and classes were assessed. RESULTS: EFA yielded a 2-factor model for ADHD and an 8-factor model for OCD. Both ADHD factors (inattentive and hyperactive/impulsive symptoms) were genetically related to TS, ADHD, and OCD. The doubts, contamination, need for sameness, and superstitions factors were genetically related to OCD, but not ADHD or TS; symmetry/exactness and fear-of-harm were associated with TS and OCD while hoarding was associated with ADHD and OCD. In contrast, aggressive urges were genetically associated with TS, OCD, and ADHD. LCA revealed a three-class solution: few OCD/ADHD symptoms (LC1), OCD & ADHD symptoms (LC2), and symmetry/exactness, hoarding, and ADHD symptoms (LC3). LC2 had the highest psychiatric comorbidity rates (⩾50% for all disorders). CONCLUSIONS: Symmetry/exactness, aggressive urges, fear-of-harm, and hoarding show complex genetic relationships with TS, OCD, and ADHD, and, rather than being specific subtypes of OCD, transcend traditional diagnostic boundaries, perhaps representing an underlying vulnerability (e.g. failure of top-down cognitive control) common to all three disorders.


Assuntos
Transtorno do Deficit de Atenção com Hiperatividade/genética , Transtorno do Deficit de Atenção com Hiperatividade/fisiopatologia , Transtorno Obsessivo-Compulsivo/genética , Transtorno Obsessivo-Compulsivo/fisiopatologia , Síndrome de Tourette/genética , Síndrome de Tourette/fisiopatologia , Família , Humanos , Fenótipo
5.
Psychol Med ; 47(6): 1085-1096, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-27974054

RESUMO

BACKGROUND: Genetic-epidemiological studies that estimate the contributions of genetic factors to variation in tic symptoms are scarce. We estimated the extent to which genetic and environmental influences contribute to tics, employing various phenotypic definitions ranging between mild and severe symptomatology, in a large population-based adult twin-family sample. METHOD: In an extended twin-family design, we analysed lifetime tic data reported by adult mono- and dizygotic twins (n = 8323) and their family members (n = 7164; parents and siblings) from 7311 families in the Netherlands Twin Register. We measured tics by the abbreviated version of the Schedule for Tourette and Other Behavioral Syndromes. Heritability was estimated by genetic structural equation modeling for four tic disorder definitions: three dichotomous and one trichotomous phenotype, characterized by increasingly strictly defined criteria. RESULTS: Prevalence rates of the different tic disorders in our sample varied between 0.3 and 4.5% depending on tic disorder definition. Tic frequencies decreased with increasing age. Heritability estimates varied between 0.25 and 0.37, depending on phenotypic definitions. None of the phenotypes showed evidence of assortative mating, effects of shared environment or non-additive genetic effects. CONCLUSIONS: Heritabilities of mild and severe tic phenotypes were estimated to be moderate. Overlapping confidence intervals of the heritability estimates suggest overlapping genetic liabilities between the various tic phenotypes. The most lenient phenotype (defined only by tic characteristics, excluding criteria B, C and D of DSM-IV) rendered sufficiently reliable heritability estimates. These findings have implications in phenotypic definitions for future genetic studies.


Assuntos
Predisposição Genética para Doença , Núcleo Familiar , Sistema de Registros , Transtornos de Tique/genética , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Países Baixos/epidemiologia , Linhagem , Transtornos de Tique/epidemiologia , Adulto Jovem
6.
Clin Exp Immunol ; 183(3): 350-7, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26462724

RESUMO

Granulocyte colony-stimulating factor (G-CSF) has been used to restore immune competence following chemoablative cancer therapy and to promote immunological tolerance in certain settings of autoimmunity. Therefore, we tested the potential of G-CSF to impact type 1 diabetes (T1D) progression in patients with recent-onset disease [n = 14; n = 7 (placebo)] and assessed safety, efficacy and mechanistic effects on the immune system. We hypothesized that pegylated G-CSF (6 mg administered subcutaneously every 2 weeks for 12 weeks) would promote regulatory T cell (Treg) mobilization to a degree capable of restoring immunological tolerance, thus preventing further decline in C-peptide production. Although treatment was well tolerated, G-CSF monotherapy did not affect C-peptide production, glycated haemoglobin (HbA1c) or insulin dose. Mechanistically, G-CSF treatment increased circulating neutrophils during the 12-week course of therapy (P < 0·01) but did not alter Treg frequencies. No effects were observed for CD4(+) : CD8(+) T cell ratio or the ratio of naive : memory (CD45RA(+)/CD45RO(+)) CD4(+) T cells. As expected, manageable bone pain was common in subjects receiving G-CSF, but notably, no severe adverse events such as splenomegaly occurred. This study supports the continued exploration of G-CSF and other mobilizing agents in subjects with T1D, but only when combined with immunodepleting agents where synergistic mechanisms of action have previously demonstrated efficacy towards the preservation of C-peptide.


Assuntos
Diabetes Mellitus Tipo 1/tratamento farmacológico , Diabetes Mellitus Tipo 1/imunologia , Fator Estimulador de Colônias de Granulócitos/administração & dosagem , Tolerância Imunológica , Células Secretoras de Insulina/fisiologia , Polietilenoglicóis/administração & dosagem , Adolescente , Adulto , Peptídeo C/sangue , Relação CD4-CD8 , Criança , Diabetes Mellitus Tipo 1/diagnóstico , Diabetes Mellitus Tipo 1/fisiopatologia , Progressão da Doença , Esquema de Medicação , Feminino , Hemoglobinas Glicadas/análise , Fator Estimulador de Colônias de Granulócitos/efeitos adversos , Fator Estimulador de Colônias de Granulócitos/sangue , Fator Estimulador de Colônias de Granulócitos/uso terapêutico , Humanos , Insulina/uso terapêutico , Células Secretoras de Insulina/efeitos dos fármacos , Contagem de Leucócitos , Depleção Linfocítica , Masculino , Pessoa de Meia-Idade , Neutrófilos/efeitos dos fármacos , Neutrófilos/fisiologia , Polietilenoglicóis/efeitos adversos , Polietilenoglicóis/uso terapêutico , Proteínas Recombinantes/administração & dosagem , Proteínas Recombinantes/efeitos adversos , Proteínas Recombinantes/uso terapêutico , Esplenomegalia , Linfócitos T Reguladores/efeitos dos fármacos , Linfócitos T Reguladores/imunologia , Adulto Jovem
7.
Psychol Med ; 46(2): 367-79, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26415671

RESUMO

BACKGROUND: Obsessive-compulsive disorder (OCD) is associated with an abnormally large error-related negativity (ERN), an electrophysiological measure of error monitoring in response to performance errors, but it is unclear if hoarding disorder (HD) also shows this abnormality. This study aimed to determine whether the neurophysiological mechanisms underlying error monitoring are similarly compromised in HD and OCD. METHOD: We used a visual flanker task to assess ERN in response to performance errors in 14 individuals with HD, 27 with OCD, 10 with HD+OCD, and 45 healthy controls (HC). Age-corrected performance and ERN amplitudes were examined using analyses of variance and planned pairwise group comparisons. RESULTS: A main effect of hoarding on ERN (p = 0.031) was observed, indicating ERN amplitudes were attenuated in HD relative to non-HD subjects. A group × age interaction effect on ERN was also evident. In HD-positive subjects, ERN amplitude deficits were significantly greater in younger individuals (r = -0.479, p = 0.018), whereas there were no significant ERN changes with increasing age in OCD and HC participants. CONCLUSIONS: The reduced ERN in HD relative to OCD and HC provides evidence that HD is neurobiologically distinct from OCD, and suggests that deficient error monitoring may be a core pathophysiological feature of HD. This effect was particularly prominent in younger HD participants, further suggesting that deficient error monitoring manifests most strongly early in the illness course and/or in individuals with a relatively early illness onset.


Assuntos
Encéfalo/fisiopatologia , Transtorno de Acumulação/fisiopatologia , Transtorno Obsessivo-Compulsivo/fisiopatologia , Adolescente , Adulto , Idoso , Estudos de Casos e Controles , Eletroencefalografia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Análise e Desempenho de Tarefas , Adulto Jovem
8.
Int J Clin Pract ; 70(4): 312-8, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26987766

RESUMO

BACKGROUND: There is currently no national screening programme for prostate cancer in England, but eligible men can request a prostate-specific antigen (PSA) test from their general practitioner (GP). There are no routinely available data to monitor the extent of PSA testing and referral. AIM: The aim of this study was to investigate the rate of PSA testing in general practice and subsequent patterns of referral. DESIGN AND SETTING: Data obtained from the Clinical Practice Research Datalink (CPRD) for men aged 45-84 years who had a PSA test during 2010-2011, registered in practices in England with linked Hospital Episode Statistics (HES) data. METHOD: Patient data were linked to previous tests and consultations. Rates of PSA testing and proportions of men retested and referred to secondary care were calculated. RESULTS: Overall, 8.74 (95% CI 8.67-8.82) of men per 100 person-years were tested at least once in 2010, and 9.45 (95% CI 9.37-9.53) in 2011. Rates increased with age and decreased with increasing level of deprivation. Of the 53,069 men tested in 2010, 11,289 (21.3%) had a previous PSA test within the past 12 months. Of men with raised PSA according to age specific guidelines, 22.4% (2113/9425) were referred to secondary care within 14 days, with 36% of the remainder retested within 6 months. CONCLUSIONS: Rates of PSA testing have increased compared with earlier studies; the data suggest that many GPs are retesting men with raised PSA rather than referring immediately. More routine data on PSA testing, including reasons for testing, and subsequent management and outcomes, are required.


Assuntos
Medicina Geral , Programas de Rastreamento/métodos , Padrões de Prática Médica , Antígeno Prostático Específico/sangue , Neoplasias da Próstata/sangue , Encaminhamento e Consulta , Sistema de Registros , Idoso , Idoso de 80 Anos ou mais , Inglaterra/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Morbidade/tendências , Neoplasias da Próstata/diagnóstico , Neoplasias da Próstata/epidemiologia
9.
Eur Child Adolesc Psychiatry ; 25(4): 373-81, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26174227

RESUMO

Little is known about risk factors for Tourette syndrome (TS) and chronic tic disorders (CT) but maternal psychological morbidity in pregnancy may be associated with TS/CT. We examined whether pre- and post-natal parental anxiety and/or depression are associated with risk of TS/CT in the Avon Longitudinal Study of Parents and Children. We compared self-reported anxiety and depression measures collected prospectively at four time points (18 and 32 weeks prenatally, and 8 weeks and 8 months post-natally) among parents of children who subsequently met criteria for TS/CT at 13 years of age as compared to other children from the cohort. We adjusted for various socioeconomic measures and tested both for time period-specific exposure and chronic exposure using multivariable logistic regression models. 122 children had TS/CT (50 TS, 72 CT) and 5968 children had no tics. In crude analyses, both pre- and post-natal maternal anxiety and depression, but only post-natal paternal depression at 8 months, showed associations with TS/CT. In the final, adjusted multivariable models, chronic maternal anxiety (odds ratio 2.17, 95% CI 1.23, 3.84, p = 0.007) and pre-natal maternal depression (odds ratio 1.86, 95% CI 1.02, 3.39, p = 0.04) showed associations with TS/CT though the latter was consistent with chance (p = 0.07) after adjustment for past maternal depression. We find associations between maternal psychological morbidity pre- and post-natally and risk of future TS/CT in offspring. These associations may reflect either shared genetic susceptibility or a pre-natal exposure. Further work is required to see if these findings can be replicated in larger datasets.


Assuntos
Afeto , Filho de Pais com Deficiência/psicologia , Pais/psicologia , Complicações na Gravidez/psicologia , Tiques/epidemiologia , Síndrome de Tourette/epidemiologia , Ansiedade/complicações , Transtornos de Ansiedade/psicologia , Criança , Filho de Pais com Deficiência/estatística & dados numéricos , Pré-Escolar , Depressão/diagnóstico , Depressão/psicologia , Transtorno Depressivo/diagnóstico , Transtorno Depressivo/psicologia , Feminino , Humanos , Lactente , Modelos Logísticos , Masculino , Gravidez , Complicações na Gravidez/diagnóstico , Efeitos Tardios da Exposição Pré-Natal/epidemiologia , Estudos Prospectivos , Fatores de Risco , Tiques/complicações , Síndrome de Tourette/complicações
10.
HIV Med ; 16(3): 191-5, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25197003

RESUMO

OBJECTIVES: The aim of the study was to estimate the cumulative incidence of, and rates of progression to, invasive anal cancer (IAC) according to baseline anal cytology screening category in an unselected HIV clinical care cohort in the antiretroviral era. METHODS: A retrospective cohort analysis of HIV-infected patients under care at the University of California at San Diego Owen Clinic was carried out. Patients were eligible for this analysis if they had at least two anal cytohistological results available for longitudinal analysis. Kaplan-Meier analysis was used to estimate the cumulative incidence of IAC over time according to baseline cytology category [less than high-grade intraepithelial lesion (HSIL) versus HSIL]. Cox regression analysis was used to adjust for the following covariates: antiretroviral use, level of HIV viraemia, smoking status and infrared photocoagulation (IRC) ablation therapy. RESULTS: Between 2000 and 2012, we followed 2804 HIV-infected patients for a median of 4 years under a clinic protocol requiring baseline anal cytology screening. Incident IAC was diagnosed in 23 patients. Patients with a baseline HSIL anal cytology had an estimated 5-year probability of progression to IAC of 1.7% and an estimated annual progression risk of 1 in 263. None of the examined covariates was significantly associated with IAC incidence when examined in separate unadjusted Cox models. CONCLUSIONS: HIV-infected patients with a baseline HSIL anal cytology had a 5-year cumulative incidence of IAC of 1.65%, with an upper 95% confidence bound of 4.5%. This population-based study provides quantitative risk estimates that may be used for counselling patients regarding management options for abnormal cytology results.


Assuntos
Canal Anal/patologia , Neoplasias do Ânus/epidemiologia , Neoplasias do Ânus/virologia , Carcinoma de Células Escamosas/epidemiologia , Infecções por HIV/complicações , Infecções por Papillomavirus/complicações , Lesões Pré-Cancerosas/epidemiologia , Adulto , Canal Anal/virologia , Neoplasias do Ânus/patologia , Carcinoma de Células Escamosas/virologia , Protocolos Clínicos , Estudos de Coortes , Progressão da Doença , Detecção Precoce de Câncer , Feminino , Infecções por HIV/epidemiologia , Infecções por HIV/patologia , Humanos , Incidência , Masculino , Invasividade Neoplásica , Infecções por Papillomavirus/epidemiologia , Infecções por Papillomavirus/patologia , Lesões Pré-Cancerosas/patologia , Lesões Pré-Cancerosas/virologia , Estudos Retrospectivos
11.
Psychol Med ; 44(13): 2867-76, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25066062

RESUMO

BACKGROUND: Until recently, hoarding was considered an obsessive-compulsive symptom (OCS). However, current evidence suggests that these two phenotypes may be clinically, and perhaps etiologically, distinct. Both hoarding and OCS have a genetic etiology, but the degree of unique and shared genetic contributions to these phenotypes has not been well studied. METHOD: Prevalence rates were assessed for hoarding and OCS in a sample of adult twin pairs (n = 7906 twins) and their family members from The Netherlands Twin Register (total sample = 15,914). Using Mplus, genetic analyses using liability threshold models were conducted for both phenotypes, for their co-morbidity, and for specific hoarding symptoms (cluttering, discarding and acquiring). RESULTS: Of the total sample, 6.7% met criteria for clinically significant hoarding; endorsement of all three hoarding symptoms was > or = 79%. Men had slightly higher rates than women. Also, 5.7% met criteria for clinically significant OCS; rates were similar in males and females. Genetic factors accounted for 36% of the variance for hoarding and 40% of the variance for OCS. The genetic correlation between hoarding and OCS was 0.10. There was no evidence of sex-specific genetic contributions for hoarding or OCS. There was evidence for a genetic contribution to all hoarding symptom subtypes. Only cluttering showed evidence of a contribution from the shared environment. CONCLUSIONS: OCS and hoarding are common in this population-based sample, have prevalence rates similar to those previously reported, and show significant heritability. Genetic factors contributed to the co-morbidity of both traits, although the genetic correlation between them was low.


Assuntos
Transtorno de Acumulação , Transtorno Obsessivo-Compulsivo , Sistema de Registros , Adulto , Feminino , Transtorno de Acumulação/epidemiologia , Transtorno de Acumulação/etiologia , Transtorno de Acumulação/genética , Humanos , Masculino , Pessoa de Meia-Idade , Países Baixos/epidemiologia , Transtorno Obsessivo-Compulsivo/epidemiologia , Transtorno Obsessivo-Compulsivo/etiologia , Transtorno Obsessivo-Compulsivo/genética
12.
Mol Psychiatry ; 18(7): 788-98, 2013 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-22889921

RESUMO

Obsessive-compulsive disorder (OCD) is a common, debilitating neuropsychiatric illness with complex genetic etiology. The International OCD Foundation Genetics Collaborative (IOCDF-GC) is a multi-national collaboration established to discover the genetic variation predisposing to OCD. A set of individuals affected with DSM-IV OCD, a subset of their parents, and unselected controls, were genotyped with several different Illumina SNP microarrays. After extensive data cleaning, 1465 cases, 5557 ancestry-matched controls and 400 complete trios remained, with a common set of 469,410 autosomal and 9657 X-chromosome single nucleotide polymorphisms (SNPs). Ancestry-stratified case-control association analyses were conducted for three genetically-defined subpopulations and combined in two meta-analyses, with and without the trio-based analysis. In the case-control analysis, the lowest two P-values were located within DLGAP1 (P=2.49 × 10(-6) and P=3.44 × 10(-6)), a member of the neuronal postsynaptic density complex. In the trio analysis, rs6131295, near BTBD3, exceeded the genome-wide significance threshold with a P-value=3.84 × 10(-8). However, when trios were meta-analyzed with the case-control samples, the P-value for this variant was 3.62 × 10(-5), losing genome-wide significance. Although no SNPs were identified to be associated with OCD at a genome-wide significant level in the combined trio-case-control sample, a significant enrichment of methylation QTLs (P<0.001) and frontal lobe expression quantitative trait loci (eQTLs) (P=0.001) was observed within the top-ranked SNPs (P<0.01) from the trio-case-control analysis, suggesting these top signals may have a broad role in gene expression in the brain, and possibly in the etiology of OCD.


Assuntos
Predisposição Genética para Doença/genética , Estudo de Associação Genômica Ampla , Proteínas do Tecido Nervoso/genética , Transtorno Obsessivo-Compulsivo/genética , Estudos de Casos e Controles , Lobo Frontal/metabolismo , Humanos , Pais , Polimorfismo de Nucleotídeo Único/genética , Locos de Características Quantitativas/genética , Proteínas Associadas SAP90-PSD95 , População Branca/genética
13.
Mol Psychiatry ; 18(6): 721-8, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22889924

RESUMO

Tourette's syndrome (TS) is a developmental disorder that has one of the highest familial recurrence rates among neuropsychiatric diseases with complex inheritance. However, the identification of definitive TS susceptibility genes remains elusive. Here, we report the first genome-wide association study (GWAS) of TS in 1285 cases and 4964 ancestry-matched controls of European ancestry, including two European-derived population isolates, Ashkenazi Jews from North America and Israel and French Canadians from Quebec, Canada. In a primary meta-analysis of GWAS data from these European ancestry samples, no markers achieved a genome-wide threshold of significance (P<5 × 10(-8)); the top signal was found in rs7868992 on chromosome 9q32 within COL27A1 (P=1.85 × 10(-6)). A secondary analysis including an additional 211 cases and 285 controls from two closely related Latin American population isolates from the Central Valley of Costa Rica and Antioquia, Colombia also identified rs7868992 as the top signal (P=3.6 × 10(-7) for the combined sample of 1496 cases and 5249 controls following imputation with 1000 Genomes data). This study lays the groundwork for the eventual identification of common TS susceptibility variants in larger cohorts and helps to provide a more complete understanding of the full genetic architecture of this disorder.


Assuntos
Colágenos Fibrilares/genética , Predisposição Genética para Doença , Estudo de Associação Genômica Ampla , Polimorfismo de Nucleotídeo Único/genética , Síndrome de Tourette/genética , Adolescente , Adulto , Transtorno do Deficit de Atenção com Hiperatividade/etiologia , Transtorno do Deficit de Atenção com Hiperatividade/genética , Estudos de Casos e Controles , Cromossomos Humanos Par 9/genética , Feminino , Genótipo , Humanos , Cooperação Internacional , Masculino , Metanálise como Assunto , Transtorno Obsessivo-Compulsivo/etiologia , Transtorno Obsessivo-Compulsivo/genética , Síndrome de Tourette/complicações , População Branca/genética , Adulto Jovem
14.
AIDS Behav ; 17(1): 203-12, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22610373

RESUMO

There is growing interest in standard care programmes for antiretroviral (ARV) adherence support. In South Africa, individual counselling following ARV initiation is a main strategy for supporting adherence in the public sector. Egan's client-centred "Skilled Helper" counselling model is the predominant model used in HIV counselling in this context. This study evaluated counselling delivered by lay ARV adherence counsellors in Cape Town in terms of adherence to Egan's model. Thirty-eight transcripts of counselling sessions with non-adherent patients were analysed based on the methods of content analysis. These sessions were conducted by 30 counsellors. Generally counsellors' practice adhered neither to Egan's model nor a client-centred approach. Inconsistent with evidence-based approaches to counselling for ARV adherence support, counsellors mainly used information-giving and advice as strategies for addressing clients' non-adherence. Recommendations for improving practice are made. The question as to how appropriate strategies from developed countries are for this setting is also raised.


Assuntos
Fármacos Anti-HIV/uso terapêutico , Aconselhamento Diretivo/métodos , Infecções por HIV/tratamento farmacológico , Adesão à Medicação/psicologia , Feminino , Infecções por HIV/psicologia , Humanos , Masculino , Motivação , Aceitação pelo Paciente de Cuidados de Saúde , Assistência Centrada no Paciente , Relações Profissional-Paciente , África do Sul
15.
Am J Med Genet B Neuropsychiatr Genet ; 162B(4): 367-79, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23606572

RESUMO

The neuronal glutamate transporter gene SLC1A1 is a candidate gene for obsessive-compulsive disorder (OCD) based on linkage studies and convergent evidence implicating glutamate in OCD etiology. The 3' end of SLC1A1 is the only genomic region with consistently demonstrated OCD association, especially when analyzing male-only probands. However, specific allele associations have not been consistently replicated, and recent OCD genome-wide association and meta-analysis studies have not incorporated all previously associated SLC1A1 SNPs. To clarify the nature of association between SLC1A1 and OCD, pooled analysis was performed on all available relevant raw study data, comprising a final sample of 815 trios, 306 cases and 634 controls. This revealed weak association between OCD and one of nine tested SLC1A1 polymorphisms (rs301443; uncorrected P = 0.046; non-significant corrected P). Secondary analyses of male-affecteds only (N = 358 trios and 133 cases) demonstrated modest association between OCD and a different SNP (rs12682807; uncorrected P = 0.012; non-significant corrected P). Findings of this meta-analysis are consistent with the trend of previous candidate gene studies in psychiatry and do not clarify the putative role of SLC1A1 in OCD pathophysiology. Nonetheless, it may be important to further examine the potential associations demonstrated in this amalgamated sample, especially since the SNPs with modest associations were not included in the more highly powered recent GWAS or in a past meta-analysis including five SLC1A1 polymorphisms. This study underscores the need for much larger sample sizes in future genetic association studies and suggests that next-generation sequencing may be beneficial in examining the potential role of rare variants in OCD.


Assuntos
Sistema X-AG de Transporte de Aminoácidos/genética , Neurônios/metabolismo , Transtorno Obsessivo-Compulsivo/genética , Sistema X-AG de Transporte de Aminoácidos/química , Estudos de Casos e Controles , Feminino , Marcadores Genéticos , Humanos , Masculino , Polimorfismo de Nucleotídeo Único
16.
S Afr Med J ; 113(5): 30-38, 2023 05 05.
Artigo em Inglês | MEDLINE | ID: mdl-37170607

RESUMO

BACKGROUND: There is no current active or passive disease surveillance programme focused on schools in South Africa. As such the country is missing an opportunity to rapidly and effectively flag and address pathogen outbreaks, for example SARS-CoV-2, in a key closed setting. Furthermore, the role of school transmission in the spread of the SARS-CoV-2 virus within communities is uncertain.  Objective. This pilot study, conducted during March 2022 in Cape Town, aimed to indicate the feasibility of conducting intense active contact-tracing in a school environment prior to a large national study to compare school versus community SARS-CoV-2 transmission risk.  Methods. We conducted a pilot school-level case-ascertained prospective study with a component of enhanced surveillance. Following study initiation, the first learner at a participating school who tested SARS-CoV-2 positive (via Polymerase Chain Reaction (PCR) or a Rapid Antigen Test (RAT)) was invited to join the study as the index case and all their school-based close contacts were followed up telephonically, monitored for symptoms for 14 days, and tested using a PCR if any symptoms were reported.  Results. On 8th March 2022, a student with RAT laboratory-confirmed COVID-19 was identified and they and their guardian consented to participate as the index case. Of the 11 eligible close contacts, six provided consent/assent and completed symptom monitoring calls until the end of the 14-day study period. The Secondary Attack Rate (SAR) was 2/11 (18.18%) of all close contacts who were at risk of infection, 2/4 (50.0%) of all those close contacts who developed symptoms, and 2/4 (50.0%) of all those close contacts who developed symptoms and were tested for SARS-CoV-2. During the same period, the school reported that nine of the 926 learner body tested COVID-19 positive (0.97%). Total hours spent conducting monitoring for 6 learners was 27 hours, with each learner requiring approximately 4.5 hours of contact time during the study period.  Conclusion. This is the first South African school-based COVID-19 transmission study, the results of which can inform national discussions regarding the role of schools and school-based active and passive surveillance in pathogen prevention and control.


Assuntos
COVID-19 , SARS-CoV-2 , Humanos , COVID-19/epidemiologia , Estudos Prospectivos , Projetos Piloto , África do Sul/epidemiologia
17.
Gynecol Oncol ; 125(1): 94-8, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22155415

RESUMO

OBJECTIVES: Controversy continues over the importance of lymph node (LN) status in treating and predicting recurrence in endometrial cancer. Several predictive models are available which use uterine factors to stratify risk groups. Our objective was to determine how LN status affects recurrence and survival compared to uterine factors alone. METHODS: A retrospective review was performed of patients undergoing complete surgical staging for clinical stage 1 endometrioid adenocarcinoma of the uterus. Patients were assessed based on PORTEC 1 high intermediate risk (H-IR) criteria (2 factors : age>60, grade 3, >50% DOI), GOG-99 H-IR criteria (age >70+1 factor, age 50-70+2 factors, any age +3 factors: grade 2 or 3, LVSI, >50% DOI), and PORTEC 2 criteria. Rates of nodal involvement, recurrence rates, PFS, and OS were compared. RESULTS: We identified 352 clinical stage I patients with positive LN in 24% (87). 175 patients met PORTEC 1 eligibility and 66 met H-IR criteria. Rates of LN positivity were similar among groups (18.4% vs 19.7%, p=0.83) but recurrence rates were dissimilar (7.4% vs 27.3%, p=0.0004). Only 93 met PORTEC 2 criteria for treatment with no association between LN status, recurrence, and eligibility. 188 patients met H-IR eligibility criteria for GOG-99 with LN positive and recurrence rates higher in the H-IR group compared to GOG-99 eligible (34.6% vs 16.3%, p=0.0004, 28.3% vs. 10.6%, p=0.0002). CONCLUSIONS: Patients with H-IR disease based on uterine characteristics alone have substantial risk of nodal involvement. Knowledge of LN status may better define risk, prognosis, and postoperative treatment.


Assuntos
Carcinoma Endometrioide/patologia , Neoplasias do Endométrio/patologia , Idoso , Carcinoma Endometrioide/mortalidade , Carcinoma Endometrioide/cirurgia , Técnicas de Apoio para a Decisão , Neoplasias do Endométrio/mortalidade , Neoplasias do Endométrio/cirurgia , Feminino , Humanos , Excisão de Linfonodo , Metástase Linfática , Pessoa de Meia-Idade , Modelos Estatísticos , Análise Multivariada , Estadiamento de Neoplasias , Pelve , Prognóstico , Recidiva , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Análise de Sobrevida , Taxa de Sobrevida
18.
AIDS Behav ; 16(5): 1286-94, 2012 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-21983698

RESUMO

Health care systems have been described as ideal settings for behaviour change counselling interventions. There is little research evaluating the feasibility of implementing such interventions in routine practice in primary care facilities. We implemented an intervention called Options for Health within routine adherence counselling practice in 20 antiretroviral facilities in Cape Town, South Africa. Lay counsellors were trained to use Options to help clients to optimise ARV adherence and reduce sexual risk behaviour. Counsellors delivered the intervention to 9% of eligible patients over 12 months. Interviews with counsellors revealed barriers to implementation including a lack of counselling space, time pressure and patient resistance to counselling. Counsellors felt that Options was not appropriate for use with all patients and adherence problems, and used parts of the intervention as it suited their needs. Findings revealed weaknesses in the current adherence counselling system that have implications for the feasibility of behaviour change counselling within this context.


Assuntos
Síndrome da Imunodeficiência Adquirida/psicologia , Fármacos Anti-HIV/uso terapêutico , Aconselhamento Diretivo/métodos , Instalações de Saúde/estatística & dados numéricos , Adesão à Medicação/psicologia , Atenção Primária à Saúde , Comportamento Sexual/psicologia , Síndrome da Imunodeficiência Adquirida/epidemiologia , Síndrome da Imunodeficiência Adquirida/terapia , Atenção à Saúde , Estudos de Viabilidade , Feminino , Seguimentos , Humanos , Masculino , Adesão à Medicação/estatística & dados numéricos , Motivação , Aceitação pelo Paciente de Cuidados de Saúde , Relações Profissional-Paciente , Comportamento de Redução do Risco , Comportamento Sexual/estatística & dados numéricos , África do Sul/epidemiologia
19.
Perspect Public Health ; : 17579139221106343, 2022 Aug 05.
Artigo em Inglês | MEDLINE | ID: mdl-35929588

RESUMO

BACKGROUND & AIMS: Planning regulations have been used to prevent the over-proliferation of hot food takeaways, minimising the impact of local obesogenic environments. To help mitigate the effects of lockdown, the UK government introduced temporary changes in March 2020 to Planning Regulations for England, allowing food retailers to open for takeaway services beyond 'ancillary' level without needing to apply for planning permission through permitted development rights (PDR). Businesses are required to notify their local authority (LA) when they implement PDRs. To better understand the impact of regulations on the policy and practice of key professional groups, Public Health England commissioned Teesside University to undertake scoping research in the North East of England. METHODS: A focus group and interviews were conducted with 15 professionals from 7 of 12 North East LAs. Professions included Planners, Public Health Leads, Environmental Health Officers and Town Centre Managers. Data were analysed using a codebook thematic analysis approach. An interpretation meeting with some participants was conducted. RESULTS: LAs were not aware of most businesses notifying them of new regulation adherence despite taking up PDRs, but were considered low-priority with many lacking formal recording procedures. There were concerns about health consequences of the changes, and consensus relating to ongoing issues with capacity across all professional groups, largely due to the continuing pandemic and absence of a strategy out of temporary measures. Concerns existed around ensuring cessation of restaurants trading as takeaways, and hygiene inspections backlog. Many (personally) saw new takeaways as a lifeline, offering broader menus and preserving local economies. CONCLUSION: Lack of information around the number of restaurants/pubs using PDR to trade as takeaway services, ongoing capacity issues of LAs and, at the time, the absence of a strategy post regulation changes, meant there were high levels of uncertainty regarding the impacts of these temporary measures.

20.
Diabetologia ; 54(9): 2232-6, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21773685

RESUMO

For more than 40 years, the contributions of nurture (i.e. the environment) and nature (i.e. genetics) have been touted for their aetiological importance in type 1 diabetes. Disappointingly, knowledge gains in these areas, while individually successful, have to a large extent occurred in isolation from each other. One reason underlying this divide is the lack of a testable model that simultaneously considers the contributions of genetic and environmental determinants in the formation of this and potentially other disorders that are subject to these variables. To address this void, we have designed a model based on the hypothesis that the aetiological influences of genetics and environment, when evaluated as intersecting and reciprocal trend lines based on odds ratios, result in a method of concurrently evaluating both facets and defining the attributable risk of clinical onset of type 1 diabetes. The model, which we have elected to term the 'threshold hypothesis', also provides a novel means of conceptualising the complex interactions of nurture with nature in type 1 diabetes across various geographical populations.


Assuntos
Diabetes Mellitus Tipo 1/etiologia , Diabetes Mellitus Tipo 1/genética , Meio Ambiente , Modelos Biológicos , Fatores Etários , Diabetes Mellitus Tipo 1/epidemiologia , Predisposição Genética para Doença/etiologia , Predisposição Genética para Doença/genética , Humanos , Incidência , Fatores de Risco
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