Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 49
Filtrar
1.
N Engl J Med ; 367(25): 2375-84, 2012 Dec 20.
Artigo em Inglês | MEDLINE | ID: mdl-23121323

RESUMO

BACKGROUND: In some randomized trials comparing revascularization strategies for patients with diabetes, coronary-artery bypass grafting (CABG) has had a better outcome than percutaneous coronary intervention (PCI). We sought to discover whether aggressive medical therapy and the use of drug-eluting stents could alter the revascularization approach for patients with diabetes and multivessel coronary artery disease. METHODS: In this randomized trial, we assigned patients with diabetes and multivessel coronary artery disease to undergo either PCI with drug-eluting stents or CABG. The patients were followed for a minimum of 2 years (median among survivors, 3.8 years). All patients were prescribed currently recommended medical therapies for the control of low-density lipoprotein cholesterol, systolic blood pressure, and glycated hemoglobin. The primary outcome measure was a composite of death from any cause, nonfatal myocardial infarction, or nonfatal stroke. RESULTS: From 2005 through 2010, we enrolled 1900 patients at 140 international centers. The patients' mean age was 63.1±9.1 years, 29% were women, and 83% had three-vessel disease. The primary outcome occurred more frequently in the PCI group (P=0.005), with 5-year rates of 26.6% in the PCI group and 18.7% in the CABG group. The benefit of CABG was driven by differences in rates of both myocardial infarction (P<0.001) and death from any cause (P=0.049). Stroke was more frequent in the CABG group, with 5-year rates of 2.4% in the PCI group and 5.2% in the CABG group (P=0.03). CONCLUSIONS: For patients with diabetes and advanced coronary artery disease, CABG was superior to PCI in that it significantly reduced rates of death and myocardial infarction, with a higher rate of stroke. (Funded by the National Heart, Lung, and Blood Institute and others; FREEDOM ClinicalTrials.gov number, NCT00086450.).


Assuntos
Angioplastia Coronária com Balão , Ponte de Artéria Coronária , Doença da Artéria Coronariana/terapia , Complicações do Diabetes/terapia , Stents Farmacológicos , Idoso , Doenças Cardiovasculares/mortalidade , Doença da Artéria Coronariana/complicações , Doença da Artéria Coronariana/cirurgia , Complicações do Diabetes/cirurgia , Feminino , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/epidemiologia , Acidente Vascular Cerebral/epidemiologia
2.
Arch Virol ; 160(6): 1579-83, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25877821

RESUMO

New sequencing studies of the nonsegmented dsRNA genome of penaeid shrimp infectious myonecrosis virus (IMNV), a tentatively assigned member of the family Totiviridae, identified previously unread sequences at both genome termini in three previously analyzed IMNV strains, one from Brazil (the prototype strain of IMNV) and two from Indonesia. The new sequence determinations add >600 nt to the 5' end of the genomic plus strand of each strain, increasing the length of the 5' nontranslated region to at least 469-472 nt and the length of the upstream open reading frame (ORF1) translation product by at least 48 aa. These new findings are similar to recent ones for two other IMNV strains (GenBank KF836757.1 and KJ556923.1) and thereby corroborate important amendments to the full-length IMNV genome sequence.


Assuntos
Penaeidae/virologia , Totiviridae/genética , Animais , Sequência de Bases , Brasil/epidemiologia , Genoma Viral/genética , Indonésia/epidemiologia , Dados de Sequência Molecular , Fases de Leitura Aberta/genética , Regiões não Traduzidas/genética
3.
J Urol ; 191(1): 100-6, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23867307

RESUMO

PURPOSE: We evaluate the bidirectional association between urological symptoms (urinary incontinence, lower urinary tract symptoms and nocturia) and sleep related variables. MATERIALS AND METHODS: Data were obtained from a prospective cohort study of 1,610 men and 2,535 women who completed baseline (2002 to 2005) and followup (2006 to 2010) phases of the BACH (Boston Area Community Health) Survey, a population based random sample survey. Sleep restriction (5 hours or less per night), restless sleep, sleep medication use and urological symptoms were assessed by self-report. Urinary incontinence was defined as weekly leakage or moderate/severe leakage, lower urinary tract symptoms (overall, obstructive, irritative) were defined by the AUA-SI (American Urological Association symptom index) and nocturia was defined as urinary frequency 2 or more times per night. RESULTS: At the 5-year followup 10.0%, 8.5% and 16.0% of subjects newly reported lower urinary tract symptoms, urinary incontinence and nocturia, respectively, and 24.2%, 13.3% and 11.6% newly reported poor sleep quality, sleep restriction and use of sleep medication, respectively. Controlling for confounders, the odds of urological symptoms developing were consistently increased for subjects who reported poor sleep quality and sleep restriction at baseline, but only baseline nocturia was positively associated with incident sleep related problems at followup. Body mass index, a potential mediator, reduced selected associations between sleep and incident urinary incontinence and irritative symptoms, but C-reactive protein did not. CONCLUSIONS: These data suggest that self-reported sleep related problems and urological symptoms are linked bidirectionally, and that body mass index may be a factor in the relationship between sleep and the development of urological symptoms.


Assuntos
Sintomas do Trato Urinário Inferior/epidemiologia , Transtornos do Sono-Vigília/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Índice de Massa Corporal , Boston/epidemiologia , Comorbidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Autorrelato
4.
Am J Public Health ; 104(9): 1650-6, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24028244

RESUMO

OBJECTIVES: We explored prevalence and clustering of key environmental conditions in low-income housing and associations with self-reported health. METHODS: The Health in Common Study, conducted between 2005 and 2009, recruited participants (n = 828) from 20 low-income housing developments in the Boston area. We interviewed 1 participant per household and conducted a brief inspection of the unit (apartment). We created binary indexes and a summed index for household exposures: mold, combustion by-products, secondhand smoke, chemicals, pests, and inadequate ventilation. We used multivariable logistic regression to examine the associations between each index and household characteristics and between each index and self-reported health. RESULTS: Environmental problems were common; more than half of homes had 3 or more exposure-related problems (median summed index = 3). After adjustment for household-level demographics, we found clustering of problems in site (P < .01) for pests, combustion byproducts, mold, and ventilation. Higher summed index values were associated with higher adjusted odds of reporting fair-poor health (odds ratio = 2.7 for highest category; P < .008 for trend). CONCLUSIONS: We found evidence that indoor environmental conditions in multifamily housing cluster by site and that cumulative exposures may be associated with poor health.


Assuntos
Exposição Ambiental/análise , Nível de Saúde , Habitação/estatística & dados numéricos , Pobreza/estatística & dados numéricos , População Urbana/estatística & dados numéricos , Adolescente , Adulto , Poluição do Ar em Ambientes Fechados/análise , Poluição do Ar em Ambientes Fechados/estatística & dados numéricos , Animais , Boston/epidemiologia , Análise por Conglomerados , Feminino , Fungos , Humanos , Insetos , Masculino , Pessoa de Meia-Idade , Praguicidas , Prevalência , Roedores , Fatores Socioeconômicos , Ventilação , Adulto Jovem
5.
Cancer Causes Control ; 24(4): 805-11, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23334887

RESUMO

PURPOSE: To assess the association between intention to quit smoking and perceptions of household environmental risks among racially/ethnically diverse residents of low-income housing. METHODS: Baseline data were collected from 2007 to 2009 for the Health in Common Study, which assessed social and physical determinants of cancer risk-related behaviors among residents of 20 low-income housing developments in the Greater Boston metropolitan area. Participants were surveyed about their tobacco use and concerns about household exposures. Household environmental inspections were also conducted to identify conditions associated with increased risk of exposure to indoor environmental agents, including pesticides, mold, and cleaning products. RESULTS: Intention to quit smoking was associated with a greater degree of concern about exposures in the home, yet not with the actual presence of household hazards, as identified by home inspections and survey findings. CONCLUSIONS: An ecological approach targeting multiple levels of influence may help to highlight the importance of both quitting tobacco and reducing potential household environmental exposures as part of comprehensive efforts to promote individual and household health.


Assuntos
Poluição do Ar em Ambientes Fechados/estatística & dados numéricos , Atitude Frente a Saúde , Exposição Ambiental/efeitos adversos , Pobreza/psicologia , Abandono do Hábito de Fumar/psicologia , Fumar/psicologia , Adolescente , Adulto , Idoso , Características da Família , Feminino , Seguimentos , Inquéritos Epidemiológicos , Humanos , Intenção , Masculino , Pessoa de Meia-Idade , North Carolina , Prognóstico , Fatores de Risco , Fumar/epidemiologia , Adulto Jovem
6.
J Sex Med ; 10(12): 3029-37, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24125113

RESUMO

INTRODUCTION: Despite widespread use of the International Index of Erectile Function (IIEF) in erectile dysfunction (ED) research, there are no published criteria for classifying ED treatment responders in clinical trials or patient management settings. A new classification for treatment response in men with ED has been developed and validated in a large clinical trial database. AIM: The study aims to test discriminant and convergent validity of the responder classification and examine the role of covariates. METHOD: Treatment assignment was used to test discriminant validity. The diary-based Sexual Encounter Profile (SEP) question ("Did your erection last long enough for you to have successful intercourse?") and Global Assessment Question (GAQ) ("Has the treatment you have been taking over the past study interval improved your erections?") were used to evaluate convergent validity. Chi-square and Cochran-Armitage trend tests were used to examine outcome associations. Logistic regression was used to further assess the relationship of outcomes controlling for covariates. MAIN OUTCOME MEASURE: The classification measure was developed and validated in a database from 17 clinical trials in 3,252 men with ED randomized to placebo or tadalafil. The treatment responder is defined as complete (erectile function [EF] ≥ 26); partial (EF < 26; met minimal clinically important difference [MCID] criteria); or nonresponder following treatment (EF < 26; did not meet MCID). RESULTS: The new responder definition performed consistently well in all prespecified tests of validity. Eighty-nine percent of subjects classified as complete responders were in the treatment group, and the responder definition was associated with changes on the SEP and GAQ measures, respectively (SEP odds ratio [OR] = 14, 95% confidence intervals [CI] 11-17; GAQ OR = 50, 95% CI 39-88; complete vs. nonresponders). CONCLUSIONS: We developed and validated a novel method of defining an ED treatment responder based on multiple IIEF criteria and using other measures (SEP, GAQ) for validation. The results have implications for understanding results of clinical trials in ED, and in monitoring response to treatment in the clinic.


Assuntos
Disfunção Erétil/classificação , Disfunção Erétil/tratamento farmacológico , Inibidores da Fosfodiesterase 5/uso terapêutico , Adolescente , Adulto , Idoso , Carbolinas/uso terapêutico , Classificação , Coito , Método Duplo-Cego , Disfunção Erétil/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Ereção Peniana/efeitos dos fármacos , Tadalafila , Resultado do Tratamento , Adulto Jovem
7.
Prev Med ; 56(1): 70-4, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23200880

RESUMO

OBJECTIVE: To examine associations between social support and ties (family, friend, and neighbors) individually and jointly with diet and physical activity among an ethnically-diverse, low-income population. METHODS: The Health in Common study (2005-2009) was designed to examine risk factors among individuals residing in low-income housing in the Boston, MA area. Cross-sectional surveys (n = 828) were administered in residents' homes. Linear/logistic multivariable analyses were employed with clustering of individuals within housing sites controlled as a random effect. RESULTS: In multivariable analyses, total social support was significantly associated with higher red meat consumption per day (p = 0.029). Having more friends was significantly associated with more daily fruit and vegetable intake (p = 0.007) and higher levels of daily vigorous physical activity (p = 0.011). Those who reported having a greater number of family ties also reported higher daily consumption of sugary drinks (p = 0.013) and fast food (p = 0.011). More neighbor social ties were associated with more fast food per day (p = 0.024). CONCLUSIONS: Social relationships can have both positive and negative associations with health behaviors. Understanding these relationships could help to inform the design of interventions that promote healthy behavior change among vulnerable populations.


Assuntos
Comportamento Alimentar/etnologia , Comportamentos Relacionados com a Saúde/etnologia , Relações Interpessoais , Obesidade/etnologia , Pobreza/etnologia , Adolescente , Adulto , Boston , Estudos Transversais , Dieta , Feminino , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Obesidade/etiologia , Apoio Social , Adulto Jovem
8.
Ethn Dis ; 23(4): 499-507, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24392615

RESUMO

OBJECTIVES: Sleep problems appear to differentially affect racial minorities and people of lower socioeconomic status (SES). These population subgroups also have higher rates of many debilitating diseases such as obesity, type 2 diabetes mellitus (T2DM), hypertension, coronary heart disease, stroke, and mortality. Considering the presence of social disparities in sleep and chronic disease, this research aims to assess the role of sleep disparities in the incidence of obesity, T2DM, hypertension, and/or cardiovascular disease (CVD). DESIGN: The Boston Area Community Health (BACH) Survey is a population-based random-sample cohort of 5502 participants aged 30-79. Sleep restriction (< or = 5 hours/night) and restless sleep were assessed at baseline. Health status was ascertained at baseline and approximately 5 years later among 1610 men and 2535 women who completed follow-up. SETTING: Participants completed an in-person, home visit, interview at baseline (2002-2005) and follow-up (2006-2010). PARTICIPANTS: Boston, Massachusetts residents (2301 men, 3201 women) aged 30-79 years from three racial groups (1767 Black, 1876 Hispanic, 1859 White) participated in the BACH Survey. RESULTS: There were significant differences in the prevalence of sleep-related problems at baseline by both race and SES as well as significant disparities in the incidence of T2DM, high blood pressure and cardiovascular disease at follow-up. Restless sleep was associated with an increased risk of obesity, T2DM, and CVD. However, we found that sleep does not mediate social disparities in health outcomes. CONCLUSIONS: Results from the BACH Survey confirm large social disparities in health outcomes as well as large social disparities in short sleep duration and restless sleep. However, sleep did not appear to mediate the relationship between race, SES, and health disparities.


Assuntos
Doenças Cardiovasculares/etnologia , Diabetes Mellitus Tipo 2/etnologia , Etnicidade/estatística & dados numéricos , Obesidade/etnologia , Transtornos do Sono-Vigília/etnologia , Adulto , Idoso , Doença Crônica , Feminino , Humanos , Hipertensão/etnologia , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Fatores Socioeconômicos , Inquéritos e Questionários
9.
Pathology ; 55(7): 1013-1016, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37793963

RESUMO

The aim of this study was to describe the antibiotic susceptibility of clinical Staphylococcus saprophyticus isolates collected prospectively from urine specimens over a 2-month period from September to October 2022 at a single centre in Melbourne, Australia. Species identification was performed by MALDI-TOF MS. All isolates underwent phenotypic antibiotic susceptibility testing by disc diffusion using European Committee on Antimicrobial Susceptibility Testing (EUCAST) and Clinical and Laboratory Standards Institute (CLSI) guidelines and VITEK2, and mecA polymerase chain reaction. A total of 302 S. saprophyticus isolates from 298 patients were included in this study. Most specimens (91.1%) were referred by community general practitioners from non-hospitalised patients. Antimicrobial resistance to non-ß-lactam antibiotics was uncommon; trimethoprim susceptibility was 97%; trimethoprim/sulfamethoxazole, 98%; nitrofurantoin, 100%; and ciprofloxacin, 100% (100% ciprofloxacin susceptible, increased exposure by EUCAST breakpoints). Methicillin resistance (by mecA detection) was the most common form of urinary antibiotic resistance at 5.6%. VITEK2 susceptibility testing for methicillin resistance had a poor specificity of 61.8% (95% CI 55.8-67.4%) compared to mecA detection. These findings indicate that empiric antibiotic recommendations of trimethoprim, trimethoprim/sulfamethoxazole, and nitrofurantoin for treatment of urinary S. saprophyticus remain appropriate.


Assuntos
Antibacterianos , Staphylococcus saprophyticus , Humanos , Antibacterianos/farmacologia , Antibacterianos/uso terapêutico , Nitrofurantoína , Testes de Sensibilidade Microbiana , Farmacorresistência Bacteriana , Ciprofloxacina , Combinação Trimetoprima e Sulfametoxazol
10.
Gastroenterology ; 141(1): 141-9, 2011 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-21440548

RESUMO

BACKGROUND & AIMS: A single nucleotide polymorphism 61*G (rs4444903) in the epidermal growth factor (EGF) gene has been associated, in 2 case-control studies, with hepatocellular carcinoma (HCC). We tested associations between demographic, clinical, and genetic data and development of HCC, and developed a simple predictive model in a cohort of patients with chronic hepatitis C and advanced fibrosis. METHODS: Black and white subjects from the Hepatitis C Antiviral Long-term Treatment against Cirrhosis (HALT-C) trial (n=816) were followed up prospectively for development of a definite or presumed case of HCC for a median time period of 6.1 years. We used the Cox proportional hazards regression model to determine the hazard ratio for risk of HCC and to develop prediction models. RESULTS: Subjects with EGF genotype G/G had a higher adjusted risk for HCC than those with genotype A/A (hazard ratio, 2.10; 95% confidence interval, 1.05-4.23; P=.03). After adjusting for EGF genotype, blacks had no increased risk of HCC risk compared with whites. Higher serum levels of EGF were observed among subjects with at least one G allele (P=.08); the subset of subjects with EGF G/G genotype and above-median serum levels of EGF had the highest risk of HCC. We developed a simple prediction model that included the EGF genotype to identify patients at low, intermediate, and high risk for HCC; 6-year cumulative HCC incidences were 2.3%, 10.4%, and 26%, respectively. CONCLUSIONS: We associated the EGF genotype G/G with increased risk for HCC; differences in its frequency among black and white subjects might account for differences in HCC incidence between these groups. We developed a model that incorporates EGF genotype and demographic and clinical variables to identify patients at low, intermediate, and high risk for HCC.


Assuntos
Carcinoma Hepatocelular/genética , Receptores ErbB/genética , Hepatite C Crônica/genética , Cirrose Hepática/genética , Neoplasias Hepáticas/genética , Polimorfismo de Nucleotídeo Único , Adulto , Negro ou Afro-Americano/genética , Antivirais/uso terapêutico , Carcinoma Hepatocelular/etnologia , Carcinoma Hepatocelular/virologia , Progressão da Doença , Receptores ErbB/sangue , Feminino , Frequência do Gene , Predisposição Genética para Doença , Hepatite C Crônica/complicações , Hepatite C Crônica/tratamento farmacológico , Hepatite C Crônica/etnologia , Humanos , Incidência , Estimativa de Kaplan-Meier , Cirrose Hepática/tratamento farmacológico , Cirrose Hepática/etnologia , Cirrose Hepática/virologia , Neoplasias Hepáticas/etnologia , Neoplasias Hepáticas/virologia , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Fenótipo , Modelos de Riscos Proporcionais , Estudos Prospectivos , Medição de Risco , Fatores de Risco , Fatores de Tempo , Estados Unidos , População Branca/genética
11.
J Urol ; 188(1): 183-9, 2012 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-22591967

RESUMO

PURPOSE: We examined the association between the use of medications and the prevalence of urinary incontinence in gender specific analyses of a community based, representative sample. MATERIALS AND METHODS: A population based epidemiological study was conducted of 5,503 men and women 30 to 79 years old residing in Boston, Massachusetts (baseline data collected from 2002 to 2005). Urological symptoms were ascertained in a 2-hour, in person interview. Urinary incontinence was defined as urine leakage occurring weekly or more often during the last year. Medications used in the last month were considered current use. Associations of 20+ medications and prevalent urinary incontinence were examined using multivariate logistic regression (ORs and 95% CIs) with adjustments for known urinary incontinence risk factors. RESULTS: The prevalence of urinary incontinence in the analysis sample was 9.0% in women and 4.6% in men. For women the prevalence was highest among users of certain antihistamines (28.4%) and angiotensin II receptor blockers (22.9%). For men the prevalence was highest among angiotensin II receptor blocker (22.2%) and loop diuretic (19.1%) users. After final multivariate adjustment there were significant positive associations for certain antihistamines, beta receptor agonists, angiotensin II receptor blockers and estrogens with urinary incontinence in women (all ORs greater than 1.7), and a borderline significant association for anticonvulsants (OR 1.75; 95% CI 1.00, 3.07). Among men only anticonvulsants were associated with urinary incontinence after final adjustments (OR 2.50; 95% CI 1.24, 5.03), although angiotensin II receptor blockers showed an adjusted association of borderline significance (OR 2.21; 95% CI 0.96, 5.10). CONCLUSIONS: Although a cross-sectional analysis cannot determine causality, our analysis suggests certain medications should be further examined in longitudinal analyses of risk to determine their influence on urological symptoms.


Assuntos
Agonistas Adrenérgicos beta/efeitos adversos , Antagonistas de Receptores de Angiotensina/efeitos adversos , Anticonvulsivantes/efeitos adversos , Antagonistas dos Receptores Histamínicos/efeitos adversos , Vigilância da População/métodos , Inibidores de Simportadores de Cloreto de Sódio e Potássio/efeitos adversos , Incontinência Urinária/epidemiologia , Adulto , Idoso , Estudos Transversais , Feminino , Humanos , Masculino , Massachusetts/epidemiologia , Pessoa de Meia-Idade , Prevalência , Prognóstico , Estudos Retrospectivos , Medição de Risco/métodos , Fatores de Risco , Fatores Sexuais , Incontinência Urinária/induzido quimicamente
12.
Toxicol Sci ; 186(2): 260-268, 2022 03 28.
Artigo em Inglês | MEDLINE | ID: mdl-35104888

RESUMO

Perfluorooctanoic acid (PFOA) is a synthetic fluorosurfactant used in the manufacturing of fluorotelomers. Although PFOA is no longer produced in the United States, it is environmentally persistent and found in imported food packaging, cookware, and textiles. Previous studies have identified developmental toxicity of PFOA, but little is known about the effects of PFOA on the adult ovary. Thus, this study examined the effects of PFOA on hormone levels, ovarian steroidogenic gene expression, and folliculogenesis in mice in vitro and in vivo. For the in vitro studies, antral follicles from adult female mice were cultured with vehicle control or 1, 10, or 100 µg/ml PFOA for 96 h. For the in vivo studies, adult CD-1 female mice were orally dosed with vehicle control or 1, 5, 10, or 20 mg/kg/day PFOA for 10 days. Gene expression of steroidogenic enzymes, levels of sex steroid hormones, and follicle counts were analyzed. In vitro, PFOA (100 µg/ml) significantly decreased follicle growth, estradiol and estrone levels, and gene expression of StaR, Cyp11a1, and Hsd3b1 compared with controls. In vivo, exposure to PFOA significantly decreased progesterone and pregnenolone levels (5 mg/kg), increased testosterone levels (1 mg/kg), and increased gene expression of Cyp19a1 (1 mg/kg) compared with controls. Exposure to PFOA also significantly altered follicle counts by decreasing primordial follicles and increasing preantral and antral follicles (5 and 10 mg/kg) compared with controls. Collectively, these data show that PFOA disrupts adult ovarian function in a nonmonotonic matter and may pose a risk for premature ovarian failure.


Assuntos
Fluorocarbonos , Ovário , Animais , Caprilatos/metabolismo , Estradiol/metabolismo , Feminino , Fluorocarbonos/metabolismo , Camundongos , Folículo Ovariano , Ovário/metabolismo
13.
Dig Dis Sci ; 56(2): 564-8, 2011 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21136163

RESUMO

BACKGROUND: Therapies that can slow the progression of liver fibrosis in chronic liver disease are needed. Evidence suggests that the renin-angiotensin system (RAS) contributes to inflammation and fibrosis in chronic liver disease. Both animal and limited human studies have shown that RAS inhibition with angiotensin-converting enzyme inhibitors (ACEi) and angiotensin receptor-1 [AT-1] blockers (ARBs) has antifibrogenic properties. AIMS: In this study, we evaluated the effects of continuous ACEi/ARB use for 3.5 years on histological liver fibrosis progression in the HALT-C Trial cohort. METHODS: In the HALT-C Trial, subjects with chronic hepatitis C and advanced hepatic fibrosis (Ishak stage ≥3) underwent serial liver biopsies at baseline, 1.5 years, and 3.5 years after randomization. The primary outcome was a ≥2-point increase in Ishak fibrosis score in at least one of the two serial biopsies. Sixty-six subjects were continuously taking ACEi/ARBs over the observation period, 126 were taking other antihypertensive medications, and 343 subjects took no antihypertensive medications. RESULTS: The three groups were similar in baseline fibrosis scores, and the two groups being treated with antihypertensives were taking a similar number of antihypertensive medications. Fibrosis progression occurred in 33.3% of the ACEi/ARB group, 32.5% of the other antihypertensive medications group, and in 25.7% of subjects taking no antihypertensive medications. No significant associations between ≥2-point increases in fibrosis scores and continuous ACEi/ARB use were apparent at either 1.5 or 3.5 years in diabetes-adjusted and unadjusted odds ratios. CONCLUSIONS: ACEi/ARB therapy did not retard the progression of hepatic fibrosis.


Assuntos
Antagonistas de Receptores de Angiotensina/uso terapêutico , Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Hepatite C Crônica/complicações , Cirrose Hepática/prevenção & controle , Adulto , Feminino , Humanos , Cirrose Hepática/etiologia , Masculino , Pessoa de Meia-Idade
14.
Cancer Causes Control ; 21(12): 2113-22, 2010 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-20725775

RESUMO

OBJECTIVES: To present the results of a study of a worksite-based intervention to promote tobacco use cessation and improve weight management among motor freight workers. METHODS: This study used a pre-test/post-test, non-randomized design to assess the effectiveness of a four-month intervention that addressed the social context of the work setting. We evaluated 7-day tobacco quit prevalence among baseline tobacco users, and successful weight management, defined as no weight gain in workers with BMI <25 at baseline and any weight loss among overweight and obese workers. RESULTS: At baseline, 40% were current tobacco users, and 88% had a BMI of 25 or greater. Of 542 workers invited to participate, 227 agreed to participate and received at least the first telephone call (42%). Ten-month post-baseline, baseline tobacco users who participated in the intervention were more likely to have quit using tobacco than non-participants: 23.8% vs. 9.1% (p = 0.02). There was no significant improvement in weight management. CONCLUSIONS: Incorporating work experiences and job conditions into messages of health behavior change resulted in significant tobacco use cessation among participating motor freight workers.


Assuntos
Saúde Ocupacional , Abandono do Uso de Tabaco/estatística & dados numéricos , Meios de Transporte , Redução de Peso , Adulto , Algoritmos , Peso Corporal/fisiologia , Aconselhamento/métodos , Emprego/estatística & dados numéricos , Promoção da Saúde/métodos , Humanos , Masculino , Pessoa de Meia-Idade , Veículos Automotores , Saúde Ocupacional/estatística & dados numéricos , Telefone , Redução de Peso/fisiologia , Local de Trabalho/estatística & dados numéricos
15.
Acta Neuropathol ; 118(4): 519-30, 2009 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19396608

RESUMO

Mild infection may trigger sudden death in the vulnerable infant by cytokine interactions with a compromised medullary serotonergic (5-HT) system, leading to disrupted cardiorespiratory regulation and sleep-related sudden death. The cytokine interleukin (IL)-6 is elevated in the cerebrospinal fluid in SIDS. We tested the hypothesis that the expression of IL-6 receptors (IL-6R) and/or gp130 (involved in IL-6R signaling) is altered in the medullary 5-HT system in SIDS. Immunohistochemistry of IL-6R and gp130 was performed on medullae from 25 SIDS infants, 20 infectious deaths, and 14 controls using a semi-quantitative grading system. In the SIDS cases, mean IL-6R intensity grade in the arcuate nucleus (major component of medullary 5-HT system) was significantly higher than in the control group (2.00 +/- 0.07 vs. 1.77 +/- 0.08, P = 0.04), with no other differences in IL-6R or gp130 expression at any other site. Arcuate 5-HT neurons expressed IL-6R, indicating a site of IL-6/5-HT interaction. In SIDS, IL-6R expression is abnormal in the arcuate nucleus, the putative human homolog of rodent ventral medullary chemosensitivity sites involving 5-HT. Aberrant interactions between IL-6 and the arcuate nucleus may contribute to impaired responses to hypercapnia generated by infection (hyper-metabolism) combined with rebreathing.


Assuntos
Bulbo/metabolismo , Neurônios/metabolismo , Receptores de Interleucina-6/metabolismo , Serotonina/metabolismo , Morte Súbita do Lactente/etiologia , Análise de Variância , Núcleo Arqueado do Hipotálamo/metabolismo , Receptor gp130 de Citocina/metabolismo , Ensaio de Imunoadsorção Enzimática , Feminino , Humanos , Imuno-Histoquímica , Lactente , Infecções/complicações , Interleucina-6/líquido cefalorraquidiano , Interleucina-6/metabolismo , Masculino , Fatores de Risco , Morte Súbita do Lactente/líquido cefalorraquidiano
16.
Pediatr Res ; 65(5): 524-9, 2009 May.
Artigo em Inglês | MEDLINE | ID: mdl-19127204

RESUMO

Despite major advances in the long-term survival of premature infants, cognitive deficits occur in 30-50% of very preterm (<32 gestational weeks) survivors. Impaired working memory and attention despite average global intelligence are central to the academic difficulties of the survivors. Periventricular leukomalacia (PVL), characterized by periventricular necrosis and diffuse gliosis in the cerebral white matter, is the major brain pathology in preterm infants. We tested the novel hypothesis that pathology in thalamic nuclei critical for working memory and attention, i.e. mediodorsal nucleus and reticular nucleus, respectively, occurs in PVL. In 22 PVL cases (gestational age 32.5 +/- 4.8 wk) and 16 non-PVL controls (36.7 +/- 5.2 wk) who died within infancy, the incidence of thalamic pathology was significantly higher in PVL cases (59%; 13/22) compared with controls (19%; 3/16) (p = 0.01), with substantial involvement of the mediodorsal, and reticular nuclei in PVL. The prevention of thalamic damage may be required for the eradication of defects in survivors with PVL.


Assuntos
Transtornos Cognitivos/etiologia , Recém-Nascido Prematuro , Leucomalácia Periventricular/patologia , Núcleos Talâmicos/patologia , Astrócitos/patologia , Atenção , Autopsia , Axônios/patologia , Estudos de Casos e Controles , Transtornos Cognitivos/patologia , Feminino , Idade Gestacional , Humanos , Lactente , Recém-Nascido , Leucomalácia Periventricular/complicações , Leucomalácia Periventricular/mortalidade , Masculino , Malondialdeído/análise , Núcleo Mediodorsal do Tálamo/patologia , Memória , Necrose , Proteínas do Tecido Nervoso/análise , Estresse Oxidativo , Núcleos Talâmicos/química
17.
Am J Public Health ; 99 Suppl 3: S636-43, 2009 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-19890169

RESUMO

OBJECTIVES: We assessed whether adequate sleep is linked to more healthful eating behaviors among motor freight workers and whether it mediates the effects of workplace experiences. METHODS: Data were derived from a baseline survey and assessment of permanent employees at 8 trucking terminals. Bivariate and multivariate regression models were used to examine relationships between work environment, sleep adequacy, and dietary choices. RESULTS: The sample (n = 542) was 83% White, with a mean age of 49 years and a mean body mass index of 30 kg/m(2). Most of the participants were satisfied with their job (87.5%) and reported adequate sleep (51%); 30% reported job strain. In our first model, lack of job strain and greater supervisor support were significantly associated with adequate sleep. In our second model, educational level, age, and adequate sleep were significantly associated with at least 2 of the 3 healthful eating choices assessed (P < .05). However, work experiences were not significant predictors of healthful food choices when adequate sleep was included. CONCLUSIONS: Adequate sleep is associated with more healthful food choices and may mediate the effects of workplace experiences. Thus, workplace health programs should be responsive to workers' sleep patterns.


Assuntos
Comportamento de Escolha , Comportamento Alimentar , Satisfação no Emprego , Sono , Meios de Transporte , Adulto , Inquéritos Epidemiológicos , Humanos , Masculino , Mid-Atlantic Region , Pessoa de Meia-Idade , North Carolina , Análise de Regressão
19.
Clin Child Psychol Psychiatry ; 14(3): 329-44, 2009 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19515751

RESUMO

Although social difficulties are a common feature of Attention-Deficit Hyperactivity Disorder (ADHD), little is known about the diversity of social problems, their etiology, or their relationship to disorders of social behavior, such as autism or Pervasive Developmental Disorder (PDD). In 379 children and adolescents with ADHD, social functioning was assessed using the Child Behavior Checklist (Achenbach, 1991). Factor analysis and structural equation modeling revealed two factors that we labeled Peer Rejection and Social Immaturity. A factor reflecting ;PDD risk' was defined from eight items of a separate screening instrument for PDD and examined for its association with these two social factors. There was a significant association with both factors, but the association was much stronger for the Social Immaturity (Standardized Beta [beta ] = .51) than Peer Rejection (beta = .29) factors. Social Immaturity was also associated with a greater number of hyperactive symptoms while high Peer Rejection was associated with increased aggression and lower IQ in the ADHD children.


Assuntos
Transtorno do Deficit de Atenção com Hiperatividade/diagnóstico , Transtorno Autístico/diagnóstico , Transtornos Globais do Desenvolvimento Infantil/diagnóstico , Ajustamento Social , Adolescente , Transtorno do Deficit de Atenção com Hiperatividade/genética , Transtorno do Deficit de Atenção com Hiperatividade/psicologia , Transtorno Autístico/psicologia , Criança , Transtornos Globais do Desenvolvimento Infantil/genética , Transtornos Globais do Desenvolvimento Infantil/psicologia , Comorbidade , Feminino , Humanos , Masculino , Modelos Psicológicos , Grupo Associado , Determinação da Personalidade , Rejeição em Psicologia , Comportamento Social
20.
J Investig Med ; 67(3): 663-668, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30530527

RESUMO

Electronic medical records (EMRs) offer a potential opportunity to identify patients at high risk for cardiometabolic disease, which encompasses type 2 diabetes and cardiovascular disease (CVD). The objective of this retrospective cohort study is to use information gathered from EMR to investigate the association between triglyceride to high-density lipoprotein cholesterol ratio (TG/HDL-C) and cardiometabolic outcomes in a general population of subjects over 50 years of age during a follow-up period of 8-9 years. TG/HDL-C was recorded for each of 1428 subjects in 2008, and diagnoses of type 2 diabetes and CVD were recorded through chart review until 2017. Cox proportional hazards models controlling for demographic characteristics and other risk factors demonstrated that high TG/HDL-C (>2.5 in women or >3.5 in men) was significantly associated with increased incidence of type 2 diabetes (HR 1.66; 95% CI 1.07 to 2.57; p=0.0230). There was also a suggested association between high TG/HDL-C and incidence of CVD (HR 1.51; 95% CI 0.98 to 2.35; p=0.0628). These findings suggest that using TG/HDL-C, which can be easily calculated from data in an EMR, should be another tool used in identifying patients at high cardiometabolic risk.


Assuntos
Doenças Cardiovasculares/sangue , HDL-Colesterol/sangue , Diabetes Mellitus Tipo 2/sangue , Triglicerídeos/sangue , Idoso , Biomarcadores/sangue , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/terapia , Estudos de Coortes , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/terapia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA