Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 16 de 16
Filtrar
1.
Trauma Violence Abuse ; 24(4): 2711-2725, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-35773632

RESUMO

Children in foster care face heightened risk of adverse psychosocial and economic outcomes compared with children in the general population. Yet, the effects of foster care as an intervention are heterogeneous. Heterogeneity outcomes by race and ethnicity are of particular interest, given that Black and Indigenous youth experience foster care at higher rates than other racial/ethnic groups and experience group differences in setting, duration, and exits to permanency. This meta-regression explores racial disparities in education, employment, mental health, and behavioral outcomes during and following foster care. A systematic search of PsycINFO, ERIC, and Academic Search Complete using a series of search terms for studies published between January 2000 and June 2021 found 70 articles and 392 effect sizes that provided outcomes of US-based foster care by race/ethnicity. Findings reveal that Black foster care impacted persons (FCIPs) have 20% lower odds (95% CI: .68-.93) of achieving employment or substantial financial earnings and have 18% lower odds (95% CI: .68-1.00) of mental health concerns compared to White FCIPs. Hispanic FCIPs have 10% lower odds (95% CI: .84-.97) of achieving stable housing compared to non-Hispanic FCIPs. Moderator analyses revealed certain study features (i.e. publication type, timing of the study, location of the study, and placement status of the participants) have a significant impact on the gap between Black and non-Black and Hispanic and non-Hispanic FCIPs. The findings provide important implications for racial disparities in foster care outcomes, as well as highlight important gaps and missing information from published studies.


Assuntos
Cuidados no Lar de Adoção , Disparidades nos Níveis de Saúde , Habitação , Bem-Estar Psicológico , Adolescente , Criança , Humanos , Etnicidade , Hispânico ou Latino , Saúde Mental , Grupos Raciais , Negro ou Afro-Americano , Brancos
2.
Child Abuse Negl ; 123: 105419, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34856446

RESUMO

BACKGROUND: Limited prior research has examined the rates or predictors of re-perpetration of child maltreatment. Yet, perpetrators may have multiple victims, and perpetrators, rather than their victims, are often the primary focus of child welfare services. OBJECTIVE: We examine rates of child maltreatment re-perpetration of repeat and new victims, and test perpetrator demographics and maltreatment index incident case characteristics as predictors of re-perpetration. PARTICIPANTS AND SETTING: We use a sample of 285,245 first-time perpetrators of a substantiated maltreatment incident in 2010 from the National Child Abuse and Neglect Data System. METHODS: We use linear probability models with full information maximum likelihood to test new victim and same victim perpetration by the end of FY 2018. RESULTS: Fifteen percent of perpetrators re-maltreated one or more of their original victims ("same victim re-perpetration"); 12% maltreated a new victim. Overall, re-perpetration was more common among younger, female, and White perpetrators. Perpetrators who were the biological or adoptive parent of their initial victim(s) had higher rates of same victim re-perpetration; new victim re-perpetration was more common among perpetrators who initially victimized an adoptive or stepchild. Same victim re-perpetration was less common among perpetrators of physical abuse than other types of maltreatment, and new victim re-perpetration was more common among perpetrators of sexual abuse and neglect than physical abuse. CONCLUSIONS: Child welfare agencies should track re-perpetration in addition to revictimization as part of agency evaluations and risk assessments.


Assuntos
Maus-Tratos Infantis , Vítimas de Crime , Delitos Sexuais , Criança , Serviços de Proteção Infantil , Feminino , Humanos , Pais
3.
J Interpers Violence ; 37(19-20): NP18589-NP18613, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-34467800

RESUMO

Females exposed to child sexual abuse (CSA) are at an increased risk of experiencing further victimization in adolescence. Associations between CSA and several forms of cyber and in-person peer bullying victimization were assessed in a prospective, longitudinal study. Females exposed to substantiated CSA and a matched comparison group (N = 422) were followed over a two-year period. Bullying experiences were assessed in both survey and qualitative interviews. Qualitative data were coded and used to describe the types (e.g., cyber, physical, verbal), and foci (e.g., threats, physical appearance) of bullying victimization. Logistic regression was used to assess the odds that CSA was associated with subsequent bullying victimization, adjusted for demographics, social networking use, and prior bullying. CSA-exposed females were at an increased risk of multiple forms of bullying victimization with a persistent risk of bullying victimization over time. Specifically, they had 2.6 times higher odds of experiencing any bullying at follow-up, 2.9 times higher odds of experiencing cyberbullying at follow-up, and 2 times higher odds of experiencing combined cyber/in-person bullying at follow-up. CSA-exposed females were more likely than comparison females to experience bullying regarding their appearance/weight and dating relationships. Findings provide further insight into the unique circumstances of the cyberbullying and in-person bullying experienced by CSA-exposed females. Females exposed to child sexual abuse (CSA) are at an increased risk of experiencing bullying victimization, specifically cyberbullying and combined cyber/in-person bullying, as well as bullying about their appearance and dating relationships. These findings indicate that bullying prevention needs to include trauma-focused components to target these uniquely vulnerable females.


Assuntos
Bullying , Abuso Sexual na Infância , Vítimas de Crime , Adolescente , Criança , Feminino , Humanos , Estudos Longitudinais , Estudos Prospectivos
4.
J Interpers Violence ; 36(11-12): 5401-5421, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-30311539

RESUMO

Bully-victims are often found to be the most high-risk group involved in bullying, yet limited prior research has explored differences among bully-victims. This study aims to fill that gap by exploring within-group differences of youth involved in both bullying perpetration and victimization. In a nationally representative sample of 165 youth ages 5 to 17, four bully-victim types were created using cutoff points based on the amount of perpetration and victimization reported: high bully-victims (n = 38), aggression predominant bully-victims (n = 67), victimization predominant bully-victims (n = 23), and moderate bully-victims (n = 37). Analyses revealed distinct differences among the groups, particularly relating to traumatic symptoms, types of bullying involvement, and nonvictimization adversity. The findings confirm that there is heterogeneity among bully-victims. The most substantial difference was found between the high group and the moderate group, with the high group significantly more likely to report depression (p < .05) and anxiety symptoms (p < .05), and more than two times more likely to experience past-year adversity than the moderate group. The findings from this study indicate that youth involved in high amounts of both perpetration and victimization are considerably more at risk of traumatic symptoms and nonvictimization adversity than youth involved in fewer bullying behaviors. These findings can be used to inform both research and practice, particularly in regard to targeted evidence-based interventions that meet the unique needs of each type.


Assuntos
Bullying , Vítimas de Crime , Adolescente , Agressão , Criança , Pré-Escolar , Humanos , Fatores de Risco
5.
Trauma Violence Abuse ; 22(4): 914-927, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-31789118

RESUMO

The current study used meta-regression to establish trends in bullying from 1998 to 2017, to identify factors that help explain variation in bullying trends, and to determine differences in the trends by gender and grade. This study focused on trends of face-to-face (FTF) bullying victimization and perpetration, cyberbullying victimization, relational bullying victimization, verbal bullying victimization, and physical bullying victimization, as well as characteristics of the youth involved. It also explored methodological and survey differences to help determine which factors contribute to variation from study to study. A systematic search found 91 studies reporting trends of bullying, from 1998 to 2017, that met predefined inclusion and exclusion criteria. The findings illustrate no significant time trend when looking at FTF bullying victimization, yet an increasing time trend for cyberbullying victimization. Additional trends begin to emerge when stratifying the findings by grade and gender, with FTF bullying victimization among boys declining, while FTF bullying victimization among girls is increasing. Across both FTF bullying victimization and cyberbullying victimization, younger adolescents report significantly more bullying than older adolescents, and this is consistent over time. Verbal and physical bullying victimization as well as FTF bullying perpetration have significantly declined over time. This study also identified key variables that contribute to the variation from trend study to trend study. The implications of these findings inform both policy and practice and provide insight into the overall scope of bullying within the United States.


Assuntos
Bullying , Vítimas de Crime , Cyberbullying , Adolescente , Feminino , Humanos , Masculino , Inquéritos e Questionários , Estados Unidos
6.
EClinicalMedicine ; 24: 100417, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32775967

RESUMO

BACKGROUND: There is limited evidence to inform treatment decision-making in adolescents experiencing first episode psychosis (FEP). In the MAPS trial (Managing Adolescent first Episode Psychosis: a feasibility Study), adolescents with FEP received either antipsychotic medication (AP), psychological intervention (PI), or both. We investigated treatment views of young people and family members across each treatment arm of MAPS. METHODS: Thirteen adolescents participating in MAPS and eighteen family members attended in-depth audio-recorded interviews to discuss trial treatments. Interviews were analysed using inductive Thematic Analysis, identifying salient themes across these accounts. FINDINGS: Family members in particular reported an urgent need for treatment regardless of type. Both AP and PI were broadly viewed as acceptable treatment approaches, but for differing reasons which participants weighed against a range of concerns. AP were often seen to reduce symptoms of psychosis, though participants expressed concerns about side effects. PI were viewed as interactive treatment approaches that helped improve understanding of psychosis and enhanced coping, although some found PI emotionally and cognitively challenging. Combining treatments was seen to maximise benefits, with a perceived interaction whereby AP facilitated engagement with PI. INTERPRETATION: Acceptability of and engagement with treatments for FEP may differ between individual young people and their family/carers. In order to be able to offer fully informed choices, and determine an optimum treatment approach for young people with FEP, definitive trial evidence should be established to determine wanted and unwanted treatment impacts. FUNDING: NIHR HTA programme (project number 15/31/04).

7.
Drug Metab Dispos ; 47(9): 995-1003, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31201212

RESUMO

Pharmacokinetic/pharmacodynamic properties are strongly correlated with the in vivo efficacy of antibiotics. Propargyl-linked antifolates, a novel class of antibiotics, demonstrate potent antibacterial activity against both Gram-positive and Gram-negative pathogenic bacteria, including multidrug-resistant Staphylococcus aureus Here, we report our efforts to optimize the pharmacokinetic profile of this class to best match the established pharmacodynamic properties. High-resolution crystal structures were used in combination with in vitro pharmacokinetic models to design compounds that not only are metabolically stable in vivo but also retain potent antibacterial activity. The initial lead compound was prone to both N-oxidation and demethylation, which resulted in an abbreviated in vivo half-life (∼20 minutes) in mice. Stability of leads toward mouse liver microsomes was primarily used to guide medicinal chemistry efforts so robust efficacy could be demonstrated in a mouse disease model. Structure-based drug design guided mitigation of N-oxide formation through substitutions of sterically demanding groups adjacent to the pyridyl nitrogen. Additionally, deuterium and fluorine substitutions were evaluated for their effect on the rate of oxidative demethylation. The resulting compound was characterized and demonstrated to have a low projected clearance in humans with limited potential for drug-drug interactions as predicted by cytochrome P450 inhibition as well as an in vivo exposure profile that optimizes the potential for bactericidal activity, highlighting how structural data, merged with substitutions to introduce metabolic stability, are a powerful approach to drug design.


Assuntos
Antibacterianos/farmacocinética , Desenho de Fármacos , Antagonistas do Ácido Fólico/farmacocinética , Modelos Biológicos , Animais , Antibacterianos/química , Proteínas de Bactérias/antagonistas & inibidores , Proteínas de Bactérias/química , Proteínas de Bactérias/metabolismo , Linhagem Celular , Cristalografia por Raios X , Citocromo P-450 CYP3A/química , Citocromo P-450 CYP3A/metabolismo , Interações Medicamentosas , Farmacorresistência Bacteriana , Ensaios Enzimáticos , Feminino , Antagonistas do Ácido Fólico/química , Hepatócitos , Humanos , Concentração Inibidora 50 , Masculino , Taxa de Depuração Metabólica , Staphylococcus aureus Resistente à Meticilina/efeitos dos fármacos , Camundongos , Testes de Sensibilidade Microbiana , Microssomos Hepáticos/metabolismo , Proteínas Recombinantes/metabolismo , Relação Estrutura-Atividade , Tetra-Hidrofolato Desidrogenase/química , Tetra-Hidrofolato Desidrogenase/metabolismo
8.
Schizophr Res ; 204: 326-333, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30121185

RESUMO

Sleep disturbance is common among individuals at risk of psychosis, yet few studies have investigated the relationship between sleep disturbance and clinical trajectory. The Early Detection and Intervention Evaluation (EDIE-2) trial provides longitudinal data on sleep duration and individual psychotic experiences from a cohort of individuals at risk of psychosis, which this study utilises in an opportunistic secondary analysis. Shorter and more variable sleep was hypothesised to be associated with more severe psychotic experiences and lower psychological wellbeing. Mixed effect models were used to test sleep duration and range as predictors of individual psychotic experiences and psychological wellbeing over the 12-24 months (with assessments every 3 months) in 160 participants. Shorter sleep duration was associated with more severe delusional ideas and hallucinations cross-sectionally and longitudinally. The longitudinal relationships did not remain significant after conservative controls were added for the previous severity of psychotic experiences. No significant relationships were found between the sleep variables and other psychotic experiences (e.g. cognitive disorganisation), or psychological wellbeing. The results support a relationship between shorter sleep duration and delusional ideas and hallucinations. Future studies should focus on improving sleep disturbance measurement, and test whether treating sleep improves clinical trajectory in the at-risk group.


Assuntos
Delusões/fisiopatologia , Alucinações/fisiopatologia , Transtornos Psicóticos/fisiopatologia , Transtornos do Sono-Vigília/fisiopatologia , Sono/fisiologia , Adolescente , Adulto , Comorbidade , Estudos Transversais , Delusões/epidemiologia , Delusões/etiologia , Diagnóstico Precoce , Intervenção Médica Precoce , Feminino , Alucinações/epidemiologia , Alucinações/etiologia , Humanos , Estudos Longitudinais , Masculino , Transtornos Psicóticos/complicações , Transtornos Psicóticos/epidemiologia , Risco , Transtornos do Sono-Vigília/epidemiologia , Adulto Jovem
9.
Psychol Med ; 47(14): 2393-2400, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28325167

RESUMO

Mental health problems are inseparable from the environment. With virtual reality (VR), computer-generated interactive environments, individuals can repeatedly experience their problematic situations and be taught, via evidence-based psychological treatments, how to overcome difficulties. VR is moving out of specialist laboratories. Our central aim was to describe the potential of VR in mental health, including a consideration of the first 20 years of applications. A systematic review of empirical studies was conducted. In all, 285 studies were identified, with 86 concerning assessment, 45 theory development, and 154 treatment. The main disorders researched were anxiety (n = 192), schizophrenia (n = 44), substance-related disorders (n = 22) and eating disorders (n = 18). There are pioneering early studies, but the methodological quality of studies was generally low. The gaps in meaningful applications to mental health are extensive. The most established finding is that VR exposure-based treatments can reduce anxiety disorders, but there are numerous research and treatment avenues of promise. VR was found to be a much-misused term, often applied to non-interactive and non-immersive technologies. We conclude that VR has the potential to transform the assessment, understanding and treatment of mental health problems. The treatment possibilities will only be realized if - with the user experience at the heart of design - the best immersive VR technology is combined with targeted translational interventions. The capability of VR to simulate reality could greatly increase access to psychological therapies, while treatment outcomes could be enhanced by the technology's ability to create new realities. VR may merit the level of attention given to neuroimaging.


Assuntos
Transtornos Mentais/diagnóstico , Transtornos Mentais/terapia , Terapia de Exposição à Realidade Virtual/métodos , Realidade Virtual , Humanos
10.
Phys Rev Lett ; 109(4): 042301, 2012 Jul 27.
Artigo em Inglês | MEDLINE | ID: mdl-23006079

RESUMO

We report a precise determination of the (19)Ne half-life to be T(1/2)=17.262±0.007 s. This result disagrees with the most recent precision measurements and is important for placing bounds on predicted right-handed interactions that are absent in the current standard model. We are able to identify and disentangle two competing systematic effects that influence the accuracy of such measurements. Our findings prompt a reassessment of results from previous high-precision lifetime measurements that used similar equipment and methods.

11.
Br J Cancer ; 91(1): 129-40, 2004 Jul 05.
Artigo em Inglês | MEDLINE | ID: mdl-15199385

RESUMO

Screening for specific biomarkers of early-stage detection of ovarian cancer is a major health priority due to the asymptomatic nature and poor survival characteristic of the disease. We utilised two-dimensional gel electrophoresis (2DE) to identify differentially expressed proteins in the serum of ovarian cancer patients that may be useful as biomarkers of this disease. In this study, 38 ovarian cancer patients at different pathological grades (grade 1 (n=6), grade 2 (n=8) and grade 3 (n=24)) were compared to a control group of eight healthy women. Serum samples were treated with a mixture of Affigel-Blue and protein A (5 : 1) for 1 h to remove high abundance protein (e.g. immunoglobulin and albumin) and were displayed using 11 cm, pH 4-7 isoelectric focusing strips for the first dimension and 10% acrylamide gel electrophoresis for the second dimension. Protein spots were visualised by SYPRO-Ruby staining, imaged by FX-imager and compared and analysed by PDQuest software. A total of 24 serum proteins were differentially expressed in grade 1 (P<0.05), 31 in grade 2 (P<0.05) and 25 in grade 3 (P<0.05) ovarian cancer patients. Six of the protein spots that were significantly upregulated in all groups of ovarian cancer patients were identified by nano-electrospray quadrupole quadrupole time-of-flight mass spectrometry (n-ESIQ(q)TOFMS) and matrix-assisted laser desorption ionisation time-of-flight mass spectrometry (MALDI-TOFMS) as isoforms of haptoglobin-1 precursor (HAP1), a liver glycoprotein present in human serum. Further identification of the spots at different pathological grades was confirmed by Western blotting using monoclonal antibody against a haptoglobin epitope contained within HAP1. Immunohistochemical localisation of HAP1-like activity was present in malignant ovarian epithelium and stroma but strong immunostaining was present in blood vessels, areas with myxomatous stroma and vascular spaces. No tissue localisation of HAP1-like immunoreactivity was observed in normal ovarian surface epithelium. These data highlight the need to assess circulating concentration of HAP1 in the serum of ovarian cancer patients and evaluate its potential as a biomarker in the early diagnosis of ovarian cancer.


Assuntos
Biomarcadores Tumorais/análise , Haptoglobinas/análise , Estadiamento de Neoplasias , Neoplasias Ovarianas/patologia , Precursores de Proteínas/sangue , Proteômica , Estudos de Casos e Controles , Eletroforese em Gel Bidimensional , Feminino , Humanos , Imuno-Histoquímica , Pessoa de Meia-Idade
12.
Am J Kidney Dis ; 38(1): 144-52, 2001 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-11431194

RESUMO

We previously showed that albumin is fragmented (>90%) during renal passage to low-molecular-weight (<10 kd) peptides. The aim of the present study was to document the renal handling of albumin in experimental diabetes. Tritium-labeled albumin was infused into control and streptozotocin (STZ) diabetic rats during 7 days. Urinary radioactivity, assessed by size exclusion chromatography, revealed a major peak corresponding to low-molecular-weight, albumin-derived fragments and a minor peak corresponding to intact albumin or high-molecular-weight, albumin-derived protein. The fractional clearance of albumin, calculated from total radioactivity measurements, was at least 100-fold greater than the fractional clearance of albumin determined by radioimmunoassay (RIA) for control and diabetic rats. This result was mainly because low-molecular-weight, albumin-derived fragments were not detected by RIA. The fractional clearance of high-molecular-weight, albumin-derived protein was 2- to 10-fold greater than the fractional clearance determined by RIA. The immuno-unreactive high-molecular-weight, albumin-derived protein (called ghost albumin), characterized by size exclusion chromatography and high-performance liquid chromatography, was present in control and diabetic rat urine. Ghost albumin excretion rate was enhanced 11-fold after 8 weeks of STZ diabetes as compared with aged-matched controls. This study shows that renal modification resulting in low-molecular-weight and high-molecular-weight components of albumin is a major contributor to the renal handling of albumin. The results indicate that excretion of modified albumin is increased in STZ rats as compared with albumin detected by conventional RIA. Long-term studies are necessary to evaluate the potential of ghost albumin as a new marker for the assessment of urinary albumin in diabetes.


Assuntos
Albuminas/farmacocinética , Diabetes Mellitus Experimental/metabolismo , Albuminas/química , Albuminas/metabolismo , Animais , Fracionamento Químico , Cromatografia Líquida de Alta Pressão , Diabetes Mellitus Experimental/urina , Taxa de Filtração Glomerular , Bombas de Infusão , Masculino , Taxa de Depuração Metabólica , Fragmentos de Peptídeos/metabolismo , Fragmentos de Peptídeos/farmacocinética , Ratos , Ratos Sprague-Dawley , Fatores de Tempo , Trítio , Urodinâmica
14.
Vet Rec ; 127(24): 604, 1990 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-2098027
15.
Am J Dermatopathol ; 12(2): 156-61, 1990 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-2331050

RESUMO

Nucleolar organizer regions (NORs) are loops of DNA situated on the short arms of acrocentric chromosomes 13, 14, 15, 21, and 22; they can be demonstrated in formalin-fixed paraffin-embedded sections by a one-step silver technique, the resulting black structures being termed AgNORs. We have applied the technique to 30 benign "banal" nevi (BN), 30 dysplastic nevi (DN), and 30 malignant melanomas (MM). AgNORs in 200 nuclei were scored and the means calculated. Counts were as follows: BN showed a mean of 1.3 AgNORs per nucleus within a range of 1.1-1.6; DN showed a mean of 1.2 within a range of 1.0-1.6; and MM showed a mean of 2.1 within a range of 1.2-4.2. A significant difference existed between counts for MM and those for BN and DN, despite some overlap. There was no statistically significant difference between BN and DN. Although still within the field of research, the AgNOR technique may prove to be of value in helping to differentiate MM from DN, but is unlikely to be of help in separating DN from BN.


Assuntos
Síndrome do Nevo Displásico/patologia , Melanoma/ultraestrutura , Região Organizadora do Nucléolo/ultraestrutura , Neoplasias Cutâneas/ultraestrutura , Núcleo Celular , Diagnóstico Diferencial , Síndrome do Nevo Displásico/diagnóstico , Humanos , Melanoma/diagnóstico , Neoplasias Cutâneas/diagnóstico
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...