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OBJECTIVE: Levetiracetam (LEV) is an effective antiseizure medicine, but 10%-20% of people treated with LEV report psychiatric side-effects, and up to 1% may have psychotic episodes. Pharmacogenomic predictors of these adverse drug reactions (ADRs) have yet to be identified. We sought to determine the contribution of both common and rare genetic variation to psychiatric and behavioral ADRs associated with LEV. METHODS: This case-control study compared cases of LEV-associated behavioral disorder (n = 149) or psychotic reaction (n = 37) to LEV-exposed people with no history of psychiatric ADRs (n = 920). All samples were of European ancestry. We performed genome-wide association study (GWAS) analysis comparing those with LEV ADRs to controls. We estimated the polygenic risk scores (PRS) for schizophrenia and compared cases with LEV-associated psychotic reaction to controls. Rare variant burden analysis was performed using exome sequence data of cases with psychotic reactions (n = 18) and controls (n = 122). RESULTS: Univariate GWAS found no significant associations with either LEV-associated behavioural disorder or LEV-psychotic reaction. PRS analysis showed that cases of LEV-associated psychotic reaction had an increased PRS for schizophrenia relative to contr ols (p = .0097, estimate = .4886). The rare-variant analysis found no evidence of an increased burden of rare genetic variants in people who had experienced LEV-associated psychotic reaction relative to controls. SIGNIFICANCE: The polygenic burden for schizophrenia is a risk factor for LEV-associated psychotic reaction. To assess the clinical utility of PRS as a predictor, it should be tested in an independent and ideally prospective cohort. Larger sample sizes are required for the identification of significant univariate common genetic signals or rare genetic signals associated with psychiatric LEV ADRs.
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Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Estudo de Associação Genômica Ampla , Anticonvulsivantes/efeitos adversos , Estudos de Casos e Controles , Predisposição Genética para Doença/genética , Humanos , Levetiracetam/efeitos adversos , Farmacogenética , Estudos ProspectivosRESUMO
This study presents findings from a community survey on pup play. Pup play is a kink activity and a form of role play that is growing in popularity internationally, and gaining increasing attention in sexology, yet prior research on pup play has almost entirely employed qualitative methods and primarily involved gay and bisexual men. Using survey data of 733 pup play participants primarily from the US, but also internationally, this study reports on the demographics of participants, how they engage in pup play, its social and sexual elements, and how it relates to social identity and mental health. Unique pup names and identifying with breeds of dogs were used to foster a sense of individuality within pup play, while the majority of participants owned and wore gear when engaging in pup play. We also found significant associations between being younger and identifying as a pup. Most participants reported that pup play improved their mental health. Binary logistic regression analyses indicated that having a mental health diagnosis was associated with identifying with a more social style of pup play and self-reporting the mental health benefits of pup play. We find that the conceptualization of pup play in the existing literature to be accurate to this international sample and highlight areas where further research is needed, alongside limitations of the study.
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Bissexualidade , Minorias Sexuais e de Gênero , Bissexualidade/psicologia , Humanos , Saúde Mental , Comportamento Sexual/psicologia , Inquéritos e QuestionáriosRESUMO
Little is known about the other leisure activities of people who engage in kink, including sexual practices and the use of alcohol and other drugs. This article examines the drinking, illicit drug use and sexual practices of people who engage in kink from a novel sample of attendees at an English festival. Of 966 respondents, 64 reported having engaged in kink within the past 12 months. We provide evidence of these respondents' self-reported demographic characteristics, alcohol and other drug use in their lifetime and within the past 12 months, as well as other sexual practices they engaged in. This study illustrates the value of accessing participants through in situ festival fieldwork to understand kink practices, and helps us move beyond notions of clustered risky activities toward a leisure studies approach to understanding the practices of people who engage in kink.
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OBJECTIVE: To ascertain whether adverse effects experienced by people taking carbamazepine or oxcarbazepine could be attributed to carbamazepine- or oxcarbazepine-induced hyponatremia (COIH). METHODS: We performed an observational study, collecting data between 2017 and 2019 on serum sodium levels and adverse effects retrospectively in people with epilepsy while receiving treatment with either carbamazepine (CBZ) or oxcarbazepine (OXC). We defined hyponatremia as sodium level ≤134 mEq/L and severe hyponatremia as sodium level ≤128 mEq/L. Adverse effects experienced were compared between groups of individuals with and without hyponatremia. RESULTS: A total of 1370 people using CBZ or OXC were identified, of whom 410 had at least one episode of hyponatremia. We checked for symptoms related to the use of CBZ and OXC in 710 people (410 with and 300 without hyponatremia) and found relevant information in 688. Adverse effects occurred in 65% of people with hyponatremia compared to 21% with normal sodium levels (odds ratio [OR] 7.5, P ≤ .001) and in 83% of people with severe hyponatremia compared to 55% in those with mild hyponatremia (P ≤ .001). Significant predictors of adverse effects were the drug (OXC vs CBZ), and the number of concomitant anti-seizure medications. Dizziness (28% vs 6%), tiredness (22% vs 7%), instability (19% vs 3%), and diplopia (16% vs 4%) were reported more often in the hyponatremia group than in patients with normal levels. SIGNIFICANCE: People with COIH had a 7-fold increased risk of developing adverse effects during treatment. Clinicians should consider ascertainment of sodium levels in patients taking CBZ and OXC and act upon findings.
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Anticonvulsivantes/efeitos adversos , Carbamazepina/efeitos adversos , Epilepsia/tratamento farmacológico , Hiponatremia/induzido quimicamente , Oxcarbazepina/efeitos adversos , Adulto , Anticonvulsivantes/uso terapêutico , Carbamazepina/uso terapêutico , Tontura/induzido quimicamente , Tontura/etiologia , Fadiga/induzido quimicamente , Fadiga/etiologia , Feminino , Humanos , Hiponatremia/sangue , Hiponatremia/complicações , Masculino , Pessoa de Meia-Idade , Oxcarbazepina/uso terapêutico , Estudos Retrospectivos , Sódio/sangueRESUMO
Muslim women in Iran live in a patriarchal society which significantly restricts their freedom and agency. While there is a growing understanding of social change as it relates to younger Muslim women in Iran, the perspectives and experiences of older women are marginalized; mirroring problems with the intersections of age, gender, and sexuality in the West. In order to address this occlusion, this article draws on life history interviews with 30 older Muslim women living in Tehran and Karaj. Adopting a biographical life course approach, and examining pivotal moments related to sexuality in their lives, we discuss how cultural meanings and symbols of sexuality have emerged and been negotiated by these women at the life stages of puberty, first sex at marriage, and menopause. The patriarchal and religious gender order of Iran transgresses these women's human rights so that sexuality is experienced as a source of shame, stigma, and pollution, yet the women also exert forms of agency in their lives as they adopt and challenge these norms.
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Islamismo , Sexualidade , Idoso , Feminino , Identidade de Gênero , Humanos , Irã (Geográfico) , Comportamento SexualRESUMO
OBJECTIVE: Drug resistance is a major concern in the treatment of individuals with epilepsy. No genetic markers for resistance to individual antiseizure medication (ASM) have yet been identified. We aimed to identify the role of rare genetic variants in drug resistance for three common ASMs: levetiracetam (LEV), lamotrigine (LTG), and valproic acid (VPA). METHODS: A cohort of 1622 individuals of European descent with epilepsy was deeply phenotyped and underwent whole exome sequencing (WES), comprising 575 taking LEV, 826 LTG, and 782 VPA. We performed gene- and gene set-based collapsing analyses comparing responders and nonresponders to the three drugs to determine the burden of different categories of rare genetic variants. RESULTS: We observed a marginally significant enrichment of rare missense, truncating, and splice region variants in individuals who were resistant to VPA compared to VPA responders for genes involved in VPA pharmacokinetics. We also found a borderline significant enrichment of truncating and splice region variants in the synaptic vesicle glycoprotein (SV2) gene family in nonresponders compared to responders to LEV. We did not see any significant enrichment using a gene-based approach. SIGNIFICANCE: In our pharmacogenetic study, we identified a slightly increased burden of damaging variants in gene groups related to drug kinetics or targeting in individuals presenting with drug resistance to VPA or LEV. Such variants could thus determine a genetic contribution to drug resistance.
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Anticonvulsivantes/uso terapêutico , Resistência a Medicamentos/genética , Epilepsia/tratamento farmacológico , Epilepsia/genética , Variantes Farmacogenômicos/genética , Estudos de Casos e Controles , Feminino , Genótipo , Humanos , Lamotrigina/uso terapêutico , Levetiracetam/uso terapêutico , Masculino , Ácido Valproico/uso terapêuticoRESUMO
OBJECTIVES: Both clinical genomics and e-Health technology are changing the way medicine is being practiced. Although the basic clinical methodology of good medical care will remain unchanged, the combined power of genomics and electronic health records has the capability of enhancing, and in some cases transforming, the practice of medicine. This is particularly true in the care of patients with complex long-term medical conditions such as chronic refractory epilepsy, especially in those with related complex comorbidities including intellectual disability and psychiatric disease. METHODS: Herein we outline the development and integration of an epilepsy genomics module into a preexisting epilepsy electronic patient record (EPR) system. RESULTS: We describe how this EPR infrastructure is used to facilitate discussion at multidisciplinary clinical meetings around molecular diagnosis and resulting changes in management. SIGNIFICANCE: This work illustrates the role of eHealth technology in embedding genomics into the clinical pathway.
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Registros Eletrônicos de Saúde , Epilepsia/genética , Genômica , Epilepsia/terapia , Genômica/métodos , Humanos , Comunicação Interdisciplinar , Linhagem , Fenótipo , FotografaçãoRESUMO
The recent biochemical distinction between antibodies against leucine-rich, glioma-inactivated-1 (LGI1), contactin-associated protein-2 (CASPR2) and intracellular epitopes of voltage-gated potassium-channels (VGKCs) demands aetiological explanations. Given established associations between human leucocyte antigen (HLA) alleles and adverse drug reactions, and our clinical observation of frequent adverse drugs reactions in patients with LGI1 antibodies, we compared HLA alleles between healthy controls (n = 5553) and 111 Caucasian patients with VGKC-complex autoantibodies. In patients with LGI1 antibodies (n = 68), HLA-DRB1*07:01 was strongly represented [odds ratio = 27.6 (95% confidence interval 12.9-72.2), P = 4.1 × 10-26]. In contrast, patients with CASPR2 antibodies (n = 31) showed over-representation of HLA-DRB1*11:01 [odds ratio = 9.4 (95% confidence interval 4.6-19.3), P = 5.7 × 10-6]. Other allelic associations for patients with LGI1 antibodies reflected linkage, and significant haplotypic associations included HLA-DRB1*07:01-DQA1*02:01-DQB1*02:02, by comparison to DRB1*11:01-DQA1*05:01-DQB1*03:01 in CASPR2-antibody patients. Conditional analysis in LGI1-antibody patients resolved further independent class I and II associations. By comparison, patients with both LGI1 and CASPR2 antibodies (n = 3) carried yet another complement of HLA variants, and patients with intracellular VGKC antibodies (n = 9) lacked significant HLA associations. Within LGI1- or CASPR2-antibody patients, HLA associations did not correlate with clinical features. In silico predictions identified unique CASPR2- and LGI1-derived peptides potentially presented by the respective over-represented HLA molecules. These highly significant HLA associations dichotomize the underlying immunology in patients with LGI1 or CASPR2 antibodies, and inform T cell specificities and cellular interactions at disease initiation.10.1093/brain/awy109_video1awy109media15796480660001.
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Antígenos HLA/metabolismo , Antígenos HLA/fisiologia , Proteínas de Membrana/fisiologia , Proteínas do Tecido Nervoso/fisiologia , Proteínas/fisiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Alelos , Autoanticorpos/metabolismo , Epitopos , Feminino , Frequência do Gene/genética , Ligação Genética/genética , Cadeias HLA-DRB1/genética , Cadeias HLA-DRB1/fisiologia , Haplótipos , Humanos , Peptídeos e Proteínas de Sinalização Intracelular , Masculino , Proteínas de Membrana/genética , Pessoa de Meia-Idade , Proteínas do Tecido Nervoso/genética , Canais de Potássio de Abertura Dependente da Tensão da Membrana/genética , Canais de Potássio de Abertura Dependente da Tensão da Membrana/imunologia , Canais de Potássio de Abertura Dependente da Tensão da Membrana/fisiologia , Proteínas/genética , População Branca/genéticaRESUMO
Recent evidence suggests it is useful to distinguish sexual identities among young men at the gay end of the spectrum because of group differences between primarily gay, mostly gay and gay orientations on several assessed physiological, behavioural and self-report measures. However, little is known about individuals' rationales for choosing sexuality labels beyond traditional gay or bisexual categories. We addressed this issue by interviewing 24 young men with a non-exclusive gay orientation about their sexual desires and histories, drawing on both qualitative and numeric data. Undertaking an inductive analysis, we found four distinct rationales for identification with a sexual orientation label: sexual, romantic, intellectual and internalised homophobia. By examining what young men mean when they classify themselves as primarily gay, mostly gay or bisexual-leaning gay, this article provides data to understand these issues and proposes that greater focus should be placed on sexual identity for non-exclusive gay men. Although the sexual and affectional components of sexual orientation are meaningful, previous research has not sufficiently accounted for the importance of intellectual, cultural and romantic factors in non-exclusive sexual orientations. To address these issues, the use of in-depth interviews should be incorporated in future studies.
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Bissexualidade , Homossexualidade Masculina , Autoimagem , Adulto , Fatores Etários , Humanos , Masculino , Pesquisa Qualitativa , Adulto JovemRESUMO
This study presents the narratives and experiences of 30 gay and bisexual men who participate in a behavior known as "pup play." Never empirically studied before, we use in-depth interviews and a modified form of grounded theory to describe the dynamics of pup play and develop a conceptual framework with which to understand it. We discuss the dynamics of pup play, demonstrating that it primarily consists of mimicking the behaviors and adopting the role of a dog. We show that the majority of participants use pup play for sexual satisfaction. It is also a form of relaxation, demonstrated primarily through the existence of a "headspace." We classify pup play as a kink, and find no evidence for the framing of it as a form of zoophilia. We call for further research on pup play as a sexual kink and leisure activity from both qualitative and quantitative perspectives.
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Bissexualidade/psicologia , Homossexualidade Masculina/psicologia , Jogos e Brinquedos/psicologia , Comportamento Sexual/psicologia , Animais , Cães , Humanos , MasculinoRESUMO
This exploratory study assessed physiological, behavioral, and self-report measures of sexual and romantic indicators of sexual orientation identities among young men (mean age = 21.9 years) with predominant same-sex sexual and romantic interests: those who described themselves as bisexual leaning gay (n = 11), mostly gay (n = 17), and gay (n = 47). Although they were not significantly distinguishable based on physiological (pupil dilation) responses to nude stimuli, on behavioral and self-report measures a descending linear trend toward the less preferred sex (female) was significant regarding sexual attraction, fantasy, genital contact, infatuation, romantic relationship, sex appeal, and gazing time to the porn stimuli. Results supported a continuum of sexuality with distinct subgroups only for the self-report measure of sexual attraction. The other behavioral and self-report measures followed the same trend but did not significantly differ between the bisexual leaning gay and mostly gay groups, likely the result of small sample size. Results suggest that romantic indicators are as good as sexual measures in assessing sexual orientation and that a succession of logically following groups from bisexual leaning gay, mostly gay, to gay. Whether these three groups are discrete or overlapping needs further research.
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Bissexualidade , Homossexualidade Masculina , Comportamento Sexual , Adolescente , Adulto , Bissexualidade/fisiologia , Bissexualidade/psicologia , Bissexualidade/estatística & dados numéricos , Homossexualidade Masculina/psicologia , Homossexualidade Masculina/estatística & dados numéricos , Humanos , Masculino , Autorrelato , Comportamento Sexual/fisiologia , Comportamento Sexual/psicologia , Comportamento Sexual/estatística & dados numéricos , Adulto JovemRESUMO
This qualitative research examines the influence of pornography consumption on young men with non-exclusive sexual orientations. Drawing on 35 in-depth interviews with young men from an elite university in the north-eastern United States, we examine how pornography was experienced as a leisure activity to be consumed in free time. Rather than focusing on the potential harms of pornography, we use an inductive analytic approach to explore the broader range of experiences that participants had, since the time they first consumed pornography. We demonstrate that pornography had educational benefits for these young men, related to their sexual desires, emerging sexual identities and for developing new sexual techniques. This study is part of a growing body of research that seeks to develop a holistic understanding of pornography in society, addressing the absence of the lived experience of the consumer in most pornography research.
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This article draws on in-depth interviews with 35 openly gay male undergraduates from four universities in England to develop an understanding of the changing nature of language related to homosexuality. In addition to finding a diminution in the prevalence of homophobic language, we demonstrate that participants maintain complex and nuanced understandings of phrases that do not use homophobic pejoratives, such as 'that's so gay'. The majority of participants rejected the notion that these phrases are inherently homophobic, instead arguing that the intent with which they are said and the context in which they are used are vital in understanding their meaning and effect. We conceptualize an intent-context-effect matrix to understand the interdependency of these variables. Highlighting the situated nature of this matrix, we also demonstrate the importance of the existence of shared norms between those saying and hearing the phrase when interpreting such language.
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Homossexualidade Masculina/psicologia , Idioma , Comunicação , Inglaterra , Amigos/psicologia , Homofobia/psicologia , Humanos , Entrevistas como Assunto , Masculino , Apoio Social , Valores Sociais , Estudantes , UniversidadesRESUMO
Idiopathic generalized epilepsy (IGE) is a complex disease with high heritability, but little is known about its genetic architecture. Rare copy-number variants have been found to explain nearly 3% of individuals with IGE; however, it remains unclear whether variants with moderate effect size and frequencies below what are reliably detected with genome-wide association studies contribute significantly to disease risk. In this study, we compare the exome sequences of 118 individuals with IGE and 242 controls of European ancestry by using next-generation sequencing. The exome-sequenced epilepsy cases include study subjects with two forms of IGE, including juvenile myoclonic epilepsy (n = 93) and absence epilepsy (n = 25). However, our discovery strategy did not assume common genetic control between the subtypes of IGE considered. In the sequence data, as expected, no variants were significantly associated with the IGE phenotype or more specific IGE diagnoses. We then selected 3,897 candidate epilepsy-susceptibility variants from the sequence data and genotyped them in a larger set of 878 individuals with IGE and 1,830 controls. Again, no variant achieved statistical significance. However, 1,935 variants were observed exclusively in cases either as heterozygous or homozygous genotypes. It is likely that this set of variants includes real risk factors. The lack of significant association evidence of single variants with disease in this two-stage approach emphasizes the high genetic heterogeneity of epilepsy disorders, suggests that the impact of any individual single-nucleotide variant in this disease is small, and indicates that gene-based approaches might be more successful for future sequencing studies of epilepsy predisposition.
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Epilepsia Generalizada/genética , Exoma/genética , Predisposição Genética para Doença/genética , Sequência de Bases , Estudo de Associação Genômica Ampla , Genótipo , Humanos , Dados de Sequência Molecular , Alinhamento de Sequência , Análise de Sequência de DNA , População Branca/genéticaRESUMO
Cyclosporine is used extensively in kidney transplantation and is a substrate for cytochrome P450 enzymes. The role of cytochrome p450 polymorphisms in kidney transplant outcome has not yet been fully elucidated. We investigate the clinical impact of single nucleotide polymorphisms in CYP3A4, CYP3A5, PPARα, and POR*28 in 255 kidney transplant recipients. We examine for any association with graft survival, time to first cancer, and delayed graft function, and also measure cyclosporine levels at days 3, 10, and months 1, 3, 6, and 12 after transplantation. The CYP3A4*22 allele is significant associated with the development of cancer post-kidney transplantation (HR 0.20, 95% CI 0.07-0.57, p = 0.003). It is not significantly associated with graft survival. No other SNP's were associated with graft survival time to first cancer, or delayed graft function. There was a non-significant trend of lower cyclosporine dose requirement in CYP3A4*22 carriers. Independent replication of our findings is now warranted to confirm or reject the role of CYP3A variants in cancer development following kidney transplantation.
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Citocromo P-450 CYP3A/genética , Sobrevivência de Enxerto/genética , Transplante de Rim , Neoplasias/genética , Polimorfismo de Nucleotídeo Único , Complicações Pós-Operatórias/genética , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do TratamentoRESUMO
BACKGROUND: Carbamazepine causes various forms of hypersensitivity reactions, ranging from maculopapular exanthema to severe blistering reactions. The HLA-B*1502 allele has been shown to be strongly correlated with carbamazepine-induced Stevens-Johnson syndrome and toxic epidermal necrolysis (SJS-TEN) in the Han Chinese and other Asian populations but not in European populations. METHODS: We performed a genomewide association study of samples obtained from 22 subjects with carbamazepine-induced hypersensitivity syndrome, 43 subjects with carbamazepine-induced maculopapular exanthema, and 3987 control subjects, all of European descent. We tested for an association between disease and HLA alleles through proxy single-nucleotide polymorphisms and imputation, confirming associations by high-resolution sequence-based HLA typing. We replicated the associations in samples from 145 subjects with carbamazepine-induced hypersensitivity reactions. RESULTS: The HLA-A*3101 allele, which has a prevalence of 2 to 5% in Northern European populations, was significantly associated with the hypersensitivity syndrome (P=3.5×10(-8)). An independent genomewide association study of samples from subjects with maculopapular exanthema also showed an association with the HLA-A*3101 allele (P=1.1×10(-6)). Follow-up genotyping confirmed the variant as a risk factor for the hypersensitivity syndrome (odds ratio, 12.41; 95% confidence interval [CI], 1.27 to 121.03), maculopapular exanthema (odds ratio, 8.33; 95% CI, 3.59 to 19.36), and SJS-TEN (odds ratio, 25.93; 95% CI, 4.93 to 116.18). CONCLUSIONS: The presence of the HLA-A*3101 allele was associated with carbamazepine-induced hypersensitivity reactions among subjects of Northern European ancestry. The presence of the allele increased the risk from 5.0% to 26.0%, whereas its absence reduced the risk from 5.0% to 3.8%. (Funded by the U.K. Department of Health and others.).
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Anticonvulsivantes/efeitos adversos , Carbamazepina/efeitos adversos , Hipersensibilidade a Drogas/genética , Antígenos HLA-A/genética , População Branca/genética , Anticonvulsivantes/uso terapêutico , Carbamazepina/uso terapêutico , Exantema/induzido quimicamente , Exantema/genética , Estudo de Associação Genômica Ampla , Genótipo , Teste de Histocompatibilidade , Humanos , Polimorfismo de Nucleotídeo Único , Síndrome de Stevens-Johnson/induzido quimicamente , Síndrome de Stevens-Johnson/genéticaRESUMO
This article examines the emergence of progressive attitudes toward homosexuality among working-class boys in a sixth form in the south of England to develop an intersectional analysis of class, youth masculinities and decreasing homophobia. Drawing on three months of ethnographic data collection, I find that working-class male youth intellectualize pro-gay attitudes and that homophobic language is almost entirely absent from the setting. I document the presence of homosocial tactility, as well as the valuing of friendship and emotional closeness. However, these behaviours are less pronounced than documented among middle-class boys, and I use these findings to advance understanding of how class influences the development of inclusive attitudes and behaviours. Inclusive masculinity theory is used to understand these findings, refining the theory and extending it to a new demographic.
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Homofobia/etnologia , Masculinidade , Classe Social , Adolescente , Antropologia Cultural , Atitude , Inglaterra , Amigos/etnologia , Amigos/psicologia , Homofobia/psicologia , Humanos , Entrevistas como Assunto , MasculinoRESUMO
Kink, often referred to as BDSM, is an important aspect of a sizable minority's sexual desires, practices, and personal relationships, yet there are few ways to assess kink engagement in a holistic manner. This study aimed to develop the Kink Orientation Scale (KOS), a novel short tool for measuring different aspects of kink sexuality. In phase one, 27 items were created and included in the initial scale based on a literature review and focus groups with kinky and non-kinky individuals. In phase two, the KOS was administered to 200 university students. Exploratory Factor Analyses (EFA) were used to determine the factor structure and dimensionality of the KOS, and we retained 18 items in the scale and identified five factors. In phase three, the 18 item KOS was administered to a kink sample of 1025 participants as a form of validation. Confirmatory Factor Analyses also identified five factors with a strong overlap to the EFA. The five factors were: kink identity; kink community; kink paraphernalia; kink practices; and sexual communication. The kink sample also provided higher scores on the KOS compared with the non-kink sample. This study shows the potential utility of the KOS in measuring kink engagement holistically.
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Background: There are limited data on the real-world healthcare resource use (HCRU) and management costs of myasthenia gravis (MG) in England. Objective: This study aims to assess the burden of disease for patients with MG in England. Design: A retrospective, observational cohort study of adult patients diagnosed with MG, using data from the Hospital Episode Statistics data warehouse. Methods: Patients with a first-ever recorded diagnosis of MG between 30 June 2015 and 30 June 2020 were followed up until 30 June 2021 or death, whichever occurred first. Post-diagnosis patient characteristics, treatment patterns, HCRU, and costs were described. Costs were evaluated using National Health Service reference costs. Results: A total of 9087 patients with a median follow-up time of 2.9 years (range, 1.7-4.3 years) were included. The mean age at diagnosis was 66.5 years and 53% of the patients were male. A large proportion of patients (72.8%) were admitted as inpatients during follow-up with a mean number of 1.3 admissions. Patients hospitalized for MG-related complications spent a mean of 9.7 days per patient-year in the hospital. During follow-up, 599 (6.6% of the total cohort) and 163 (1.8%) patients had a record of rescue therapy with intravenous immunoglobulin (IVIg) and plasma exchange (PLEX), respectively. Rituximab was administered to 81 (0.9%) patients and 268 (2.9%) patients underwent thymectomy. In those patients receiving rescue therapy or rituximab, >10% received at least three cycles of the same treatment. The average annual cost of hospital admissions across all patients treated with IVIg, PLEX, and rituximab were £907,072, £689,979, and £146,726, respectively. Conclusion: A majority of MG patients required hospitalization or accident and emergency attendance, resulting in high HCRU and costs. A subset of patients required rescue therapy (including IVIg and PLEX), rituximab administration, ventilation, or thymectomy.
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BACKGROUND: We examined, through genome-wide association studies (GWAS), the correlation between recipient genetic variation and renal function at five yr. METHODS: Our cohort contained 326 Irish, first time, kidney-only, deceased donor, transplant recipients on calcineurin inhibitors (263 had a functioning graft at five yr) between 1993 and 2002. Outcomes were creatinine at five yr and long-term graft function. RESULTS: Two variants were identified showing borderline genome-wide significance - one on chromosome 18 (p = 4.048e-08, rs6565887) and another on chromosome 14 (p = 7.631e-08, rs3811321). Individually, the two SNPs explained up to 8.8% and 11.29% of five-yr creatinine variance, respectively, while together they explained up to 17.4% of trait variance. Both variants were predictors of long-term allograft function (p = 0.004, 70% vs 30% survival at 10 yr). The chromosome 14 variant is located in the intergenic region of the T-Cell Receptor Alpha locus. CONCLUSIONS: Using a genome-wide approach, we have identified two associations with five-yr creatinine levels in renal transplant recipients treated with calcineurin inhibitors. Independent replication is now warranted to clarify the clinical significance of these results.