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1.
Nutr Metab Cardiovasc Dis ; 31(7): 2165-2172, 2021 06 30.
Artigo em Inglês | MEDLINE | ID: mdl-34039503

RESUMO

BACKGROUND AND AIMS: Food preferences are often modified in populations during stressful, unanticipated events. We examined how a U.S. population's food choices changed during the beginning of the COVID-19 stay-at-home orders, specifically during the spring of 2020. METHODS AND RESULTS: Daily dietary intake data from a digital behavior change weight loss program, which includes an interface for logging meals, beverages, and snacks, were analyzed to assess self-reported food choices from March 5-March 11, 2020 ("Start-COVID") and during the first week of the COVID-19 lockdown (March 12-March 18, 2020; "during-COVID"). The final sample consisted of 381,564 participants: 318,076 (83.4%) females, the majority who were aged 45-65 years (45.2%). Results indicate that self-reported servings of fresh fruit and vegetable intake decreased from start-to during-COVID, while intake of red meat and starchy vegetables increased. More men than women increased their intake of red meat and processed meat. Less overall change in fruit and vegetable consumption was seen in those 66 and older, compared to aged 18-35. Lean meat and starchy vegetable intake increased in older participants, but the change was negligible in younger subjects. More subjects aged 18-35 years reduced their intake of caffeine, desserts, lean meat, and salads compared to older participants. No changes were observed in snack or alcohol intake logged. CONCLUSION: This study revealed that particular food groups were altered according to age and gender during the first weeks of COVID lockdown. Understanding changes in food choices during a crisis may be useful for preparing supply chains and public health responses.


Assuntos
COVID-19 , Comportamento de Escolha , Dieta Saudável , Comportamento Alimentar , Redução de Peso , Programas de Redução de Peso , Adolescente , Adulto , Fatores Etários , Idoso , Ingestão de Energia , Feminino , Humanos , Intervenção Baseada em Internet , Masculino , Pessoa de Meia-Idade , Valor Nutritivo , Cooperação do Paciente , Tamanho da Porção de Referência , Fatores de Tempo , Estados Unidos , Adulto Jovem
2.
Am J Obstet Gynecol ; 222(5): 478.e1-478.e17, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-31705884

RESUMO

BACKGROUND: Frequent and severe vasomotor symptoms during menopause are linked with adverse health outcomes. Understanding modifiable lifestyle factors for the risk of vasomotor menopausal symptoms is important to guide preventive strategies. OBJECTIVE: We investigated the associations between body mass index and smoking, their joint effects with the risk of vasomotor symptoms, and whether the associations differed by menopausal stage. STUDY DESIGN: The International Collaboration for a Life Course Approach to Reproductive Health and Chronic Disease Events pooled data on 21,460 midlife women from 8 studies (median age, 50 years; interquartile range, 49-51 years) for the cross-sectional analysis. Four studies provided data for the prospective analysis (n=11,986). Multinomial logistic regression models with 4 categories of frequency/severity for the outcome of vasomotor symptoms were used to estimate relative risk ratios and 95% confidence intervals that were adjusted for within-study correlation and covariates. RESULTS: At baseline, nearly 60% of the women experienced vasomotor symptoms. One-half of them were overweight (30%) or obese (21%), and 17% were current smokers. Cross-sectional analyses showed that a higher body mass index and smoking more cigarettes with longer duration and earlier initiation were all associated with more frequent or severe vasomotor symptoms. Never smokers who were obese had a 1.5-fold (relative risk ratio, 1.52; 95% confidence interval, 1.35-1.73) higher risk of often/severe vasomotor symptoms, compared with never smokers who were of normal-weight. Smoking strengthened the association because the risk of often/severe vasomotor symptoms was much greater among smokers who were obese (relative risk ratio, 3.02; 95% confidence interval, 2.41-3.78). However, smokers who quit at <40 years of age were at similar levels of risk as never smokers. Prospective analyses showed a similar pattern, but the association attenuated markedly after adjustment for baseline vasomotor symptoms. Furthermore, we found that the association between body mass index and vasomotor symptoms differed by menopausal status. Higher body mass index was associated with increased risk of vasomotor symptoms in pre- and perimenopause but with reduced risk in postmenopause. CONCLUSION: High body mass index (≥25 kg/m2) and cigarette smoking substantially increased women's risk for experiencing frequent or severe vasomotor symptoms in a dose-response manner, and smoking intensified the effect of obesity. However, the effect of body mass index on the risk of vasomotor symptoms was opposite among postmenopausal women. Maintaining a normal weight before the menopausal transition and quitting smoking at <40 years of age may mitigate the excess risk of vasomotor symptoms in midlife.


Assuntos
Índice de Massa Corporal , Fogachos/etiologia , Menopausa/fisiologia , Obesidade/complicações , Fumar/efeitos adversos , Sistema Vasomotor/fisiopatologia , Feminino , Fogachos/fisiopatologia , Humanos , Pessoa de Meia-Idade , Obesidade/fisiopatologia , Fumar/fisiopatologia , Sudorese/fisiologia
3.
BMC Public Health ; 20(1): 999, 2020 Jun 26.
Artigo em Inglês | MEDLINE | ID: mdl-32586316

RESUMO

Tuberculosis is the deadliest infection of our time. In contrast, about 11,000 people died of Ebola between 2014 and 2016. Despite this manifest difference in mortality, there is now a vaccine licensed in the United States and by the European Medicines Agency, with up to 100% efficacy against Ebola. The developments that led to the trialing of the Ebola vaccine were historic and unprecedented. The single licensed TB vaccine (BCG) has limited efficacy. There is a dire need for a more efficacious TB vaccine. To deploy such vaccines, trials are needed in sites that combine high disease incidence and research infrastructure. We describe our twelve-year experience building a TB vaccine trial site in contrast to the process in the recent Ebola outbreak. There are additional differences. Relative to the Ebola pipeline, TB vaccines have fewer trials and a paucity of government and industry led trials. While pathogens have varying levels of difficulty in the development of new vaccine candidates, there yet appears to be greater interest in funding and coordinating Ebola interventions. TB is a global threat that requires similar concerted effort for elimination.


Assuntos
Vacina BCG/uso terapêutico , Ensaios Clínicos como Assunto/normas , Surtos de Doenças/prevenção & controle , Programas de Imunização/normas , Tuberculose/prevenção & controle , África , Surtos de Doenças/estatística & dados numéricos , Vacinas contra Ebola , Doença pelo Vírus Ebola/epidemiologia , Humanos , Tuberculose/epidemiologia
4.
BMC Med ; 17(1): 17, 2019 02 15.
Artigo em Inglês | MEDLINE | ID: mdl-30764819

RESUMO

BACKGROUND: Stigma is associated with health conditions that drive disease burden in low- and middle-income countries (LMICs), including HIV, tuberculosis, mental health problems, epilepsy, and substance use disorders. However, the literature discussing the relationship between stigma and health outcomes is largely fragmented within disease-specific siloes, thus limiting the identification of common moderators or mechanisms through which stigma potentiates adverse health outcomes as well as the development of broadly relevant stigma mitigation interventions. METHODS: We conducted a scoping review to provide a critical overview of the breadth of research on stigma for each of the five aforementioned conditions in LMICs, including their methodological strengths and limitations. RESULTS: Across the range of diseases and disorders studied, stigma is associated with poor health outcomes, including help- and treatment-seeking behaviors. Common methodological limitations include a lack of prospective studies, non-representative samples resulting in limited generalizability, and a dearth of data on mediators and moderators of the relationship between stigma and health outcomes. CONCLUSIONS: Implementing effective stigma mitigation interventions at scale necessitates transdisciplinary longitudinal studies that examine how stigma potentiates the risk for adverse outcomes for high-burden health conditions in community-based samples in LMICs.


Assuntos
Estigma Social , Países em Desenvolvimento , Epilepsia , Infecções por HIV , Humanos , Masculino , Transtornos Mentais , Transtornos Relacionados ao Uso de Substâncias , Tuberculose
5.
BMC Med ; 17(1): 25, 2019 02 15.
Artigo em Inglês | MEDLINE | ID: mdl-30764806

RESUMO

Stigma in health facilities undermines diagnosis, treatment, and successful health outcomes. Addressing stigma is fundamental to delivering quality healthcare and achieving optimal health. This correspondence article seeks to assess how developments over the past 5 years have contributed to the state of programmatic knowledge-both approaches and methods-regarding interventions to reduce stigma in health facilities, and explores the potential to concurrently address multiple health condition stigmas. It is supported by findings from a systematic review of published articles indexed in PubMed, Psychinfo and Web of Science, and in the United States Agency for International Development's Development Experience Clearinghouse, which was conducted in February 2018 and restricted to the past 5 years. Forty-two studies met inclusion criteria and provided insight on interventions to reduce HIV, mental illness, or substance abuse stigma. Multiple common approaches to address stigma in health facilities emerged, which were implemented in a variety of ways. The literature search identified key gaps including a dearth of stigma reduction interventions in health facilities that focus on tuberculosis, diabetes, leprosy, or cancer; target multiple cadres of staff or multiple ecological levels; leverage interactive technology; or address stigma experienced by health workers. Preliminary results from ongoing innovative responses to these gaps are also described.The current evidence base of stigma reduction in health facilities provides a solid foundation to develop and implement interventions. However, gaps exist and merit further work. Future investment in health facility stigma reduction should prioritize the involvement of clients living with the stigmatized condition or behavior and health workers living with stigmatized conditions and should address both individual and structural level stigma.


Assuntos
Instalações de Saúde , Pessoal de Saúde , Estigma Social , Humanos
6.
BMC Infect Dis ; 19(1): 682, 2019 Aug 02.
Artigo em Inglês | MEDLINE | ID: mdl-31375068

RESUMO

BACKGROUND: Adolescents are a prime target group for tuberculosis (TB) vaccine trials that include prevention of infection (POI). The BCG vaccine is given at birth and does not prevent TB infection. TB infection, a critical endpoint for POI vaccine trials would need to be documented to estimate sample sizes in target populations. METHODS: Adolescents aged 12-18 years of age were enrolled in an area under continuous demographic surveillance. A tuberculin skin test (TST) survey was conducted as part of a study on TB prevalence and incidence. All adolescents got TSTs at enrolment and returned after 72 h for reading. A TST of ≥10 mm if HIV negative or ≥ 5 mm if HIV positive, was considered positive. RESULTS: Of 4808 adolescents returning for TST readings (96% of those enrolled), mean age was 14.4 (SD 1.9), 4518(94%) were enrolled in school and 21(0.4%) gave a previous history of tuberculosis. Among adolescents with TST reactivity, the mean TST induration was 13.2 mm (SD 5.4). The overall prevalence of latent TB infection was 1544/4808 (32.1, 95% CI 29.2-35.1) with a corresponding annual risk of TB infection (ARTI) of 2.6% (95% CI 2.2-3.1). Risk factors for a positive TST included being male (OR 1.3, 95% CI 1.2,1.5), history of having a household TB contact (OR 1.5, 95% CI 1.2,1.8), having a BCG scar (OR 1.5,95% CI 1.2,1.8), living in a rural area (OR 1.4, 95% CI 1.1,1.9), and being out of school (OR 1.8, 95% CI 1.4,2.3). CONCLUSION: We conclude that the high TB transmission rates we found in this study, suggest that adolescents in this region may be an appropriate target group for TB vaccine trials including TB vaccine trials aiming to prevent infection.


Assuntos
Tuberculose/epidemiologia , Adolescente , Vacina BCG/uso terapêutico , Criança , Feminino , Humanos , Quênia/epidemiologia , Tuberculose Latente/diagnóstico , Tuberculose Latente/epidemiologia , Masculino , Mycobacterium tuberculosis/patogenicidade , Prevalência , Fatores de Risco , Instituições Acadêmicas , Teste Tuberculínico , Tuberculose/diagnóstico
7.
PLoS Med ; 15(11): e1002704, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-30481189

RESUMO

BACKGROUND: Cigarette smoking is associated with earlier menopause, but the impact of being a former smoker and any dose-response relationships on the degree of smoking and age at menopause have been less clear. If the toxic impact of cigarette smoking on ovarian function is irreversible, we hypothesized that even former smokers might experience earlier menopause, and variations in intensity, duration, cumulative dose, and age at start/quit of smoking might have varying impacts on the risk of experiencing earlier menopause. METHODS AND FINDINGS: A total of 207,231 and 27,580 postmenopausal women were included in the cross-sectional and prospective analyses, respectively. They were from 17 studies in 7 countries (Australia, Denmark, France, Japan, Sweden, United Kingdom, United States) that contributed data to the International collaboration for a Life course Approach to reproductive health and Chronic disease Events (InterLACE). Information on smoking status, cigarettes smoked per day (intensity), smoking duration, pack-years (cumulative dose), age started, and years since quitting smoking was collected at baseline. We used multinomial logistic regression models to estimate multivariable relative risk ratios (RRRs) and 95% confidence intervals (CIs) for the associations between each smoking measure and categorised age at menopause (<40 (premature), 40-44 (early), 45-49, 50-51 (reference), and ≥52 years). The association with current and former smokers was analysed separately. Sensitivity analyses and two-step meta-analyses were also conducted to test the results. The Bayesian information criterion (BIC) was used to compare the fit of the models of smoking measures. Overall, 1.9% and 7.3% of women experienced premature and early menopause, respectively. Compared with never smokers, current smokers had around twice the risk of experiencing premature (RRR 2.05; 95% CI 1.73-2.44) (p < 0.001) and early menopause (1.80; 1.66-1.95) (p < 0.001). The corresponding RRRs in former smokers were attenuated to 1.13 (1.04-1.23; p = 0.006) and 1.15 (1.05-1.27; p = 0.005). In both current and former smokers, dose-response relationships were observed, i.e., higher intensity, longer duration, higher cumulative dose, earlier age at start smoking, and shorter time since quitting smoking were significantly associated with higher risk of premature and early menopause, as well as earlier menopause at 45-49 years. Duration of smoking was a strong predictor of age at natural menopause. Among current smokers with duration of 15-20 years, the risk was markedly higher for premature (15.58; 11.29-19.86; p < 0.001) and early (6.55; 5.04-8.52; p < 0.001) menopause. Also, current smokers with 11-15 pack-years had over 4-fold (4.35; 2.78-5.92; p < 0.001) and 3-fold (3.01; 2.15-4.21; p < 0.001) risk of premature and early menopause, respectively. Smokers who had quit smoking for more than 10 years had similar risk as never smokers (1.04; 0.98-1.10; p = 0.176). A limitation of the study is the measurement errors that may have arisen due to recall bias. CONCLUSIONS: The probability of earlier menopause is positively associated with intensity, duration, cumulative dose, and earlier initiation of smoking. Smoking duration is a much stronger predictor of premature and early menopause than others. Our findings highlight the clear benefits for women of early smoking cessation to lower their excess risk of earlier menopause.


Assuntos
Menopausa Precoce , Doenças Ovarianas/epidemiologia , Abandono do Hábito de Fumar , Fumar/efeitos adversos , Adulto , Idade de Início , Idoso , Austrália/epidemiologia , Europa (Continente)/epidemiologia , Feminino , Humanos , Pessoa de Meia-Idade , Estudos Observacionais como Assunto , Doenças Ovarianas/diagnóstico , Doenças Ovarianas/fisiopatologia , Medição de Risco , Fatores de Risco , Fumar/epidemiologia , Fatores de Tempo , Estados Unidos/epidemiologia
8.
Liver Transpl ; 24(6): 803-809, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29506323

RESUMO

Recent data have suggested that pediatric patients wait-listed for a liver transplantation frequently have liver offers declined. However, factors associated with liver offer decisions and center-level variability in practice patterns have not been explored. We evaluated United Network for Organ Sharing data on all match runs from May 1, 2007 to December 31, 2015 in which the liver was offered to ≥1 pediatric patient; the transplant recipient was ranked in the first 40 positions for the organ offer; and the donor was brain-dead and <50 years of age. We used multilevel mixed effects models to evaluate factors associated with organ offer acceptance, among-center variability, and the association between center-level acceptance and wait-list mortality. There were 4088 unique pediatric patients during the study period, comprising 27,094 match runs. Initial Model for End-Stage Liver Disease or Pediatric End-Stage Liver Disease score, history of exception points, recipient region, rank on match run, and geographic share type were all associated with probability of offer acceptance. There was significant among-center variation (P < 0.001) in adjusted liver offer acceptance rates, accounting for donor, recipient, and match-related factors (adjusted acceptance rates: median, 8.9%; range, 5.1%-14.6%). Center-level acceptance rates were associated with wait-list mortality, with a >10% increase in the risk of wait-list mortality for every 1% decrease in a center's adjusted liver offer acceptance rate (odds ratio, 1.10; 95% confidence interval, 1.01-1.19). In conclusion, there is significant among-center variability in liver offer acceptance rates for pediatric patients that is not explained by donor and recipient factors. A center's liver acceptance behavior significantly impacts whether a pediatric patient will be transplanted or die on the waiting list. Liver Transplantation 24 803-809 2018 AASLD.


Assuntos
Doença Hepática Terminal/mortalidade , Transplante de Fígado/estatística & dados numéricos , Padrões de Prática Médica/estatística & dados numéricos , Obtenção de Tecidos e Órgãos/estatística & dados numéricos , Listas de Espera/mortalidade , Aloenxertos/estatística & dados numéricos , Criança , Pré-Escolar , Doença Hepática Terminal/diagnóstico , Doença Hepática Terminal/cirurgia , Feminino , Hospitais Pediátricos/organização & administração , Hospitais Pediátricos/normas , Hospitais Pediátricos/estatística & dados numéricos , Humanos , Lactente , Recém-Nascido , Fígado/cirurgia , Transplante de Fígado/métodos , Masculino , Padrões de Prática Médica/organização & administração , Padrões de Prática Médica/normas , Alocação de Recursos/normas , Alocação de Recursos/estatística & dados numéricos , Medição de Risco , Fatores de Risco , Índice de Gravidade de Doença , Fatores de Tempo , Doadores de Tecidos/estatística & dados numéricos , Obtenção de Tecidos e Órgãos/normas , Transplantados/estatística & dados numéricos , Estados Unidos/epidemiologia
9.
Psychol Med ; 48(15): 2550-2561, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-29429422

RESUMO

BACKGROUND: Many women experience both vasomotor menopausal symptoms (VMS) and depressed mood at midlife, but little is known regarding the prospective bi-directional relationships between VMS and depressed mood and the role of sleep difficulties in both directions. METHODS: A pooled analysis was conducted using data from 21 312 women (median: 50 years, interquartile range 49-51) in eight studies from the InterLACE consortium. The degree of VMS, sleep difficulties, and depressed mood was self-reported and categorised as never, rarely, sometimes, and often (if reporting frequency) or never, mild, moderate, and severe (if reporting severity). Multivariable logistic regression models were used to examine the bi-directional associations adjusted for within-study correlation. RESULTS: At baseline, the prevalence of VMS (40%, range 13-62%) and depressed mood (26%, 8-41%) varied substantially across studies, and a strong dose-dependent association between VMS and likelihood of depressed mood was found. Over 3 years of follow-up, women with often/severe VMS at baseline were more likely to have subsequent depressed mood compared with those without VMS (odds ratios (OR) 1.56, 1.27-1.92). Women with often/severe depressed mood at baseline were also more likely to have subsequent VMS than those without depressed mood (OR 1.89, 1.47-2.44). With further adjustment for the degree of sleep difficulties at baseline, the OR of having a subsequent depressed mood associated with often/severe VMS was attenuated and no longer significant (OR 1.13, 0.90-1.40). Conversely, often/severe depressed mood remained significantly associated with subsequent VMS (OR 1.80, 1.38-2.34). CONCLUSIONS: Difficulty in sleeping largely explained the relationship between VMS and subsequent depressed mood, but it had little impact on the relationship between depressed mood and subsequent VMS.


Assuntos
Depressão/fisiopatologia , Fogachos/fisiopatologia , Menopausa/fisiologia , Transtornos do Sono-Vigília/fisiopatologia , Sudorese/fisiologia , Sistema Vasomotor/fisiopatologia , Comorbidade , Interpretação Estatística de Dados , Depressão/epidemiologia , Feminino , Seguimentos , Fogachos/epidemiologia , Humanos , Pessoa de Meia-Idade , Prevalência , Transtornos do Sono-Vigília/epidemiologia
10.
Eur J Epidemiol ; 33(8): 699-710, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29460096

RESUMO

Current evidence on the association between body mass index (BMI) and age at menopause remains unclear. We investigated the relationship between BMI and age at menopause using data from 11 prospective studies. A total of 24,196 women who experienced menopause after recruitment was included. Baseline BMI was categorised according to the WHO criteria. Age at menopause, confirmed by natural cessation of menses for ≥ 12 months, was categorised as < 45 years (early menopause), 45-49, 50-51 (reference category), 52-53, 54-55, and ≥ 56 years (late age at menopause). We used multinomial logistic regression models to estimate multivariable relative risk ratios (RRRs) and 95% confidence intervals (CI) for the associations between BMI and age at menopause. The mean (standard deviation) age at menopause was 51.4 (3.3) years, with 2.5% of the women having early and 8.1% late menopause. Compared with those with normal BMI (18.5-24.9 kg/m2), underweight women were at a higher risk of early menopause (RRR 2.15, 95% CI 1.50-3.06), while overweight (1.52, 1.31-1.77) and obese women (1.54, 1.18-2.01) were at increased risk of late menopause. Overweight and obesity were also significantly associated with around 20% increased risk of menopause at ages 52-53 and 54-55 years. We observed no association between underweight and late menopause. The risk of early menopause was higher among obese women albeit not significant (1.23, 0.89-1.71). Underweight women had over twice the risk of experiencing early menopause, while overweight and obese women had over 50% higher risk of experiencing late menopause.


Assuntos
Índice de Massa Corporal , Menopausa , Adulto , Fatores Etários , Austrália , Europa (Continente) , Feminino , Humanos , Pessoa de Meia-Idade , Sobrepeso , Estudos Prospectivos , Magreza , Estados Unidos
11.
J Pediatr Gastroenterol Nutr ; 66(4): 588-594, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29176474

RESUMO

BACKGROUND: Crigler-Najjar syndrome type I (CNI) arises from biallelic variants of UGT1A1 that abrogate uridine diphosphate glucuronosyltransferase (UGT1A1) activity resulting in unconjugated hyperbilirubinemia. Historically, liver parenchyma in CNI was considered structurally and histologically normal. Recent review of CNI liver explants revealed fibrosis. Our aim was to investigate the association between hepatic histology and disease phenotype in CNI. METHODS: We extracted data from the medical record at the time of liver transplant from 22 patients with CNI at the Children's Hospital of Pittsburgh, and reviewed explant histology. Continuous data were normally distributed, are presented as mean (±1 SD), and analyzed using two-tailed Student t-test. Categorical data were analyzed using the Chi-square test. RESULTS: Both alanine transaminase (ALT; mean 87.4 IU/L) and aspartate transaminase (AST; mean 54.6 IU/L) were elevated. Nine (41%) of 22 explants had significant fibrosis. Pericentral (n = 5), periportal (n = 2), and mixed (n = 2) patterns of fibrosis occurred. A significant difference in mean age of subjects with fibrotic versus non-fibrotic livers (16.1 years vs 10.5 years; P = 0.02) was seen. There were no indices of synthetic liver dysfunction or portal hypertension. Neither a history of gallstone disease nor excess weight appeared to contribute to the development of fibrosis. CONCLUSIONS: For the first time, we report a 41% prevalence of clinically silent, yet histologically significant fibrosis among subjects with Crigler-Najjar type 1. Risk for fibrosis appears to accrue with time, indicating that earlier intervention may be prudent whenever considering alternative treatments such as hepatocyte transplant, auxiliary liver transplant, or viral gene therapy.


Assuntos
Síndrome de Crigler-Najjar/patologia , Fígado/patologia , Adolescente , Criança , Pré-Escolar , Humanos , Cirrose Hepática/etiologia , Cirrose Hepática/patologia , Testes de Função Hepática/estatística & dados numéricos , Transplante de Fígado , Pennsylvania , Fenótipo , Estudos Retrospectivos , Adulto Jovem
12.
Phys Chem Chem Phys ; 20(11): 7701-7709, 2018 Mar 14.
Artigo em Inglês | MEDLINE | ID: mdl-29498386

RESUMO

Elucidating atmospheric oxidation mechanisms and the reaction kinetics of atmospheric compounds is of great importance and necessary for atmospheric modeling and the understanding of the formation of atmospheric organic aerosols. While the hydrolysis of aldehydes has been detected in the presence of sulfuric acid, the reaction mechanism and kinetics remain unclear. Herein, we use electronic structure methods with CCSD(T)/CBS accuracy and canonical variational transition state theory combined with small-curvature tunneling to study the reaction mechanism and kinetics of the hydrolysis of CH3CHO. The calculated results show that the hydrolysis of CH3CHO needs to overcome an energy barrier of 37.21 kcal mol-1, while the energy barrier is decreased to -9.79 kcal mol-1 with a sulfuric acid catalyst. In addition, the calculated kinetic results show that the H2SO4H2O + CH3CHO reaction is faster than H2SO4 + CH3CHOH2O. Additionally, the H2SO4H2O + CH3CHO reaction can play an important role in the sink of CH3CHO below 260 K occurring during the night period when OH, H2SO4, and H2O concentrations are 104, 108, and 1017 molecules cm-3, respectively, because it can compete well with the CH3CHO + OH reaction. There are wide implications in atmospheric chemistry from these findings because of the potential importance of the catalytic effect of H2SO4 on the hydrolysis of CH3CHO in the atmosphere and in the formation of secondary organic aerosols.

13.
Breast Cancer Res ; 18(1): 57, 2016 05 28.
Artigo em Inglês | MEDLINE | ID: mdl-27233359

RESUMO

BACKGROUND: Observational studies suggest weight loss and energy restriction reduce breast cancer risk. Intermittent energy restriction (IER) reduces weight to the same extent as, or more than equivalent continuous energy restriction (CER) but the effects of IER on normal breast tissue and systemic metabolism as indicators of breast cancer risk are unknown. METHODS: We assessed the effect of IER (two days of 65 % energy restriction per week) for one menstrual cycle on breast tissue gene expression using Affymetrix GeneChips, adipocyte size by morphometry, and systemic metabolism (insulin resistance, lipids, serum and urine metabolites, lymphocyte gene expression) in 23 overweight premenopausal women at high risk of breast cancer. Unsupervised and supervised analyses of matched pre and post IER biopsies in 20 subjects were performed, whilst liquid and gas chromatography mass spectrometry assessed corresponding changes in serum and urine metabolites in all subjects after the two restricted and five unrestricted days of the IER. RESULTS: Women lost 4.8 % (±2.0 %) of body weight and 8.0 % (±5.0 %) of total body fat. Insulin resistance (homeostatic model assessment (HOMA)) reduced by 29.8 % (±17.8 %) on the restricted days and by 11 % (±34 %) on the unrestricted days of the IER. Five hundred and twenty-seven metabolites significantly increased or decreased during the two restricted days of IER. Ninety-one percent of these returned to baseline after 5 days of normal eating. Eleven subjects (55 %) displayed reductions in energy restriction-associated metabolic gene pathways including lipid synthesis, gluconeogenesis and glycogen synthesis. Some of these women also had increases in genes associated with breast epithelial cell differentiation (secretoglobulins, milk proteins and mucins) and decreased collagen synthesis (TNMD, PCOLCE2, TIMP4). There was no appreciable effect of IER on breast gene expression in the other nine subjects. These groups did not differ in the degree of changes in weight, total body fat, fat cell size or serum or urine metabolomic markers. Corresponding gene changes were not seen in peripheral blood lymphocytes. CONCLUSION: The transcriptional response to IER is variable in breast tissue, which was not reflected in the systemic response, which occurred in all subjects. The mechanisms of breast responsiveness/non-responsiveness require further investigation. TRIAL REGISTRATION: ISRCTN77916487 31/07/2012.


Assuntos
Metabolismo Energético , Regulação da Expressão Gênica , Glândulas Mamárias Humanas/metabolismo , Adulto , Biomarcadores , Biópsia , Composição Corporal , Peso Corporal , Neoplasias da Mama/etiologia , Neoplasias da Mama/metabolismo , Neoplasias da Mama/patologia , Restrição Calórica , Análise por Conglomerados , Feminino , Hormônios/sangue , Humanos , Resistência à Insulina , Lipídeos/sangue , Linfócitos/imunologia , Linfócitos/metabolismo , Ciclo Menstrual , Metabolômica/métodos , Pessoa de Meia-Idade , Característica Quantitativa Herdável
14.
BMC Infect Dis ; 16(1): 416, 2016 08 15.
Artigo em Inglês | MEDLINE | ID: mdl-27526850

RESUMO

BACKGROUND: The World Health Organization recommends TB infection control (TBIC) in health care facilities. In 2008, the Ministry of Health Uganda initiated efforts to implement TBIC by training of health care workers (HCWs). This study was carried out to assess knowledge and attitudes towards TBIC among HCWs. METHODS: We conducted a cross-sectional study among HCWs in health facilities in the districts of Mukono and Wakiso in Uganda, from October 2010 to February 2011. We assessed HCWs' knowledge of basic standards of TB diagnosis, treatment and TBIC and attitudes towards TBIC measures. RESULTS: Twenty four percent of the participants answered correctly all the basic TB knowledge questions. Overall, 62 % of the HCWs were judged to have adequate basic TB knowledge. At multivariable analysis, non-clinical cadres, were more likely to have poor basic TB knowledge, [adjusted odds ratio (aOR) 0.43; 95 % confidence interval (CI) 0.27-0.68)]. Only 7 % of the respondents answered all the questions on TBIC correctly. Almost all the respondents (98 %; 529/541) knew that TB was transmitted through droplet nuclei, while only a third (34 %; 174/532) knew that masks do not protect the wearer from getting TB. Overall, 69 % (355/512) of the HCWs were judged to have adequate TBIC knowledge. At multivariable analysis, non-clinical cadres (aOR 0.61; 95 % CI 0.38-0.98) and having not attended TBIC training, (aOR 0.65; 95 % CI 0.42-0.99), were more likely to have poor TBIC knowledge. More than three quarters (77 %; 410/530) and 63 % (329/522) of the respondents had a high self-efficacy and perceived threat of acquiring TB at work, respectively. Having not attended a TBIC training was significantly associated with a low self-efficacy (aOR 0.52; 95 % CI 0.33-0.81) and low perceived threat of acquiring TB infection at work, (aOR 0.54; 95 % CI 0.36-0.81). CONCLUSIONS: Our study finds moderate number of HCWs with correct knowledge and attitudes towards TBIC. Efforts should be put in place to train all HCWs in TBIC, with particular emphasis on the non-clinical staff due to their limited grasp of TBIC measures.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Pessoal de Saúde/psicologia , Adolescente , Adulto , Estudos Transversais , Feminino , Instalações de Saúde , Humanos , Controle de Infecções , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Razão de Chances , Tuberculose/diagnóstico , Uganda , Local de Trabalho , Adulto Jovem
15.
BMC Ophthalmol ; 15: 51, 2015 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-25971316

RESUMO

BACKGROUND: Tolosa-Hunt syndrome is a rare clinical syndrome characterized by painful ophthalmoplegia and ipsilateral cranial neuropathies. It is caused by an inflammatory process of unknown etiology. CASE PRESENTATION: We present a case of a 77-year-old white man with history of Waldenstrom's macroglobulinemia transforming to large B-cell lymphoma who presented to a community physician complaining of 4 months of isolated right retro-orbital pain and later with diplopia, ptosis, 6th nerve and pupil-sparing partial 3rd nerve palsies as well as progressive neurological findings. His clinical course was complicated by debilitating neurological symptoms and multiple hospitalizations leading to a delay in diagnosis caused by incomplete initial workup. CONCLUSION: This case is a reminder that lymphoproliferative disorders often mimic other neurologic disorders and that Tolosa-Hunt is a rare diagnosis that must be considered a diagnosis of exclusion.


Assuntos
Linfoma Difuso de Grandes Células B/diagnóstico , Neoplasias Orbitárias/diagnóstico , Síndrome de Tolosa-Hunt/diagnóstico , Idoso , Biópsia por Agulha Fina , Quimiorradioterapia , Diagnóstico Diferencial , Humanos , Linfoma Difuso de Grandes Células B/terapia , Imageamento por Ressonância Magnética , Masculino , Neoplasias Orbitárias/terapia , Tomografia por Emissão de Pósitrons , Tomografia Computadorizada por Raios X
17.
BMC Womens Health ; 14: 27, 2014 Feb 13.
Artigo em Inglês | MEDLINE | ID: mdl-24521075

RESUMO

BACKGROUND: Internet surveys that draw from traditionally generated samples provide the unique conditions to engage adolescents in exploration of sensitive health topics. METHODS: We examined awareness of unwanted pregnancy, abortion behaviour, methods, and attitudes toward specific legal indications for abortion via a school-based internet survey among 378 adolescents aged 12-21 years in three Rio de Janeiro public schools. RESULTS: Forty-five percent knew peers who had undergone an abortion. Most students (66.0%) did not disclose abortion method knowledge. However, girls (aOR 4.2, 95% CI 2.4-7.2), those who had experienced their sexual debut (aOR1.76, 95% CI 1.1-3.0), and those attending a prestigious magnet school (aOR 2.7 95% CI 1.4-6.3) were more likely to report methods. Most abortion methods (79.3%) reported were ineffective, obsolete, and/or unsafe. Herbs (e.g. marijuana tea), over-the-counter medications, surgical procedures, foreign objects and blunt trauma were reported. Most techniques (85.2%) were perceived to be dangerous, including methods recommended by the World Health Organization. A majority (61.4%) supported Brazil's existing law permitting abortion in the case of rape. There was no association between gender, age, sexual debut, parental education or socioeconomic status and attitudes toward legal abortion. However, students at the magnet school supported twice as many legal indications (2.7, SE.27) suggesting a likely role of peers and/or educators in shaping abortion views. CONCLUSIONS: Abortion knowledge and attitudes are not driven simply by age, religion or class, but rather a complex interplay that includes both social spaces and gender. Prevention of abortion morbidity and mortality among adolescents requires comprehensive sexuality and reproductive health education that includes factual distinctions between safe and unsafe abortion methods.


Assuntos
Aborto Induzido , Conhecimentos, Atitudes e Prática em Saúde , Grupo Associado , Gravidez na Adolescência , Adolescente , Brasil , Criança , Feminino , Humanos , Internet , Masculino , Gravidez , Gravidez não Desejada , Instituições Acadêmicas , Fatores Sexuais , Fatores Socioeconômicos , Inquéritos e Questionários , Adulto Jovem
18.
Prof Case Manag ; 29(2): 47-53, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38251941

RESUMO

PURPOSE: Social determinants of health (SDOH), the environmental, economic, and social factors that influence people's health outcomes, are widely recognized across health and human services. In addition, there are other factors that can exacerbate SDOH; among them is immigration status. Its influence is so profound that it has been suggested that immigration be considered an SDOH in and of itself (National Academies of Sciences, Engineering, and Medicine, 2018). Across the continuum, case managers need to be aware of the immigration status of their clients (the individuals for whom they advocate and provide services). This is particularly important when addressing the care needs and discharge plans for clients in acute care, community-based health, and workers' compensation. With workers' compensation, when an individual is undocumented and severely injured, immigration status directly impacts the services they may receive under state mandates. Moreover, such limitations can present ethical dilemmas for case managers, including what happens to workers if they are returned to their home countries. PRIMARY PRACTICE SETTINGS: SDOH and immigration status can impact individuals in acute care, subacute care, community-based care, and workers' compensation. IMPLICATIONS FOR CASE MANAGEMENT PRACTICE: SDOH and immigration status highlight the disparities that exist within health and human services. Although equity is a core value of case management practice, the case manager's ability to provide equal access to care and resources can be severely limited because of the individual's immigration status. At all times, case managers must practice within their licensure and certifications. By recognizing that immigration status should be an SDOH, case management professionals and health and human services organizations can elevate the discussion of how to care for individuals with catastrophic injuries and illnesses who are undocumented.


Assuntos
Continuidade da Assistência ao Paciente , Determinantes Sociais da Saúde , Humanos , Alta do Paciente , Administração de Caso , Emigração e Imigração
19.
JMIR Public Health Surveill ; 10: e52191, 2024 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-38506095

RESUMO

BACKGROUND: Recognition of the importance of valid, real-time knowledge of infectious disease risk has renewed scrutiny into private providers' intentions, motives, and obstacles to comply with an Integrated Disease Surveillance Response (IDSR) framework. Appreciation of how private providers' attitudes shape their tuberculosis (TB) notification behaviors can yield lessons for the surveillance of emerging pathogens, antibiotic stewardship, and other crucial public health functions. Reciprocal trust among actors and institutions is an understudied part of the "software" of surveillance. OBJECTIVE: We aimed to assess the self-reported knowledge, motivation, barriers, and TB case notification behavior of private health care providers to public health authorities in Lagos, Nigeria. We measured the concordance between self-reported notification, TB cases found in facility records, and actual notifications received. METHODS: A representative, stratified sample of 278 private health care workers was surveyed on TB notification attitudes, behavior, and perceptions of public health authorities using validated scales. Record reviews were conducted to identify the TB treatment provided and facility case counts were abstracted from the records. Self-reports were triangulated against actual notification behavior for 2016. The complex health system framework was used to identify potential predictors of notification behavior. RESULTS: Noncompliance with the legal obligations to notify infectious diseases was not attributable to a lack of knowledge. Private providers who were uncomfortable notifying TB cases via the IDSR system scored lower on the perceived benevolence subscale of trust. Health care workers who affirmed "always" notifying via IDSR monthly reported higher median trust in the state's public disease control capacity. Although self-reported notification behavior was predicted by age, gender, and positive interaction with public health bodies, the self-report numbers did not tally with actual TB notifications. CONCLUSIONS: Providers perceived both risks and benefits to recording and reporting TB cases. To improve private providers' public health behaviors, policy makers need to transcend instrumental and transactional approaches to surveillance to include building trust in public health, simplifying the task, and enhancing the link to improved health. Renewed attention to the "software" of health systems (eg, norms, values, and relationships) is vital to address pandemic threats. Surveys with private providers may overestimate their actual participation in public health surveillance.


Assuntos
Confiança , Humanos , Nigéria/epidemiologia , Confiança/psicologia , Estudos Transversais , Masculino , Feminino , Adulto , Tuberculose/psicologia , Tuberculose/epidemiologia , Pessoal de Saúde/psicologia , Pessoal de Saúde/estatística & dados numéricos , Inquéritos e Questionários , Pessoa de Meia-Idade , Notificação de Doenças/estatística & dados numéricos , Vigilância da População/métodos , Setor Privado
20.
JMIR Mhealth Uhealth ; 12: e54634, 2024 Jun 27.
Artigo em Inglês | MEDLINE | ID: mdl-38935946

RESUMO

BACKGROUND: Rising rates of psychological distress (symptoms of depression, anxiety, and stress) among adults in the United States necessitate effective mental wellness interventions. Despite the prevalence of smartphone app-based programs, research on their efficacy is limited, with only 14% showing clinically validated evidence. Our study evaluates Noom Mood, a commercially available smartphone-based app that uses cognitive behavioral therapy and mindfulness-based programming. In this study, we address gaps in the existing literature by examining postintervention outcomes and the broader impact on mental wellness. OBJECTIVE: Noom Mood is a smartphone-based mental wellness program designed to be used by the general population. This prospective study evaluates the efficacy and postintervention outcomes of Noom Mood. We aim to address the rising psychological distress among adults in the United States. METHODS: A 1-arm study design was used, with participants having access to the Noom Mood program for 16 weeks (N=273). Surveys were conducted at baseline, week 4, week 8, week 12, week 16, and week 32 (16 weeks' postprogram follow-up). This study assessed a range of mental health outcomes, including anxiety symptoms, depressive symptoms, perceived stress, well-being, quality of life, coping, emotion regulation, sleep, and workplace productivity (absenteeism or presenteeism). RESULTS: The mean age of participants was 40.5 (SD 11.7) years. Statistically significant improvements in anxiety symptoms, depressive symptoms, and perceived stress were observed by week 4 and maintained through the 16-week intervention and the 32-week follow-up. The largest changes were observed in the first 4 weeks (29% lower, 25% lower, and 15% lower for anxiety symptoms, depressive symptoms, and perceived stress, respectively), and only small improvements were observed afterward. Reductions in clinically relevant anxiety (7-item generalized anxiety disorder scale) and depression (8-item Patient Health Questionnaire depression scale) criteria were also maintained from program initiation through the 16-week intervention and the 32-week follow-up. Work productivity also showed statistically significant results, with participants gaining 2.57 productive work days from baseline at 16 weeks, and remaining relatively stable (2.23 productive work days gained) at follow-up (32 weeks). Additionally, effects across all coping, sleep disturbance (23% lower at 32 weeks), and emotion dysregulation variables exhibited positive and significant trends at all time points (15% higher, 23% lower, and 25% higher respectively at 32 weeks). CONCLUSIONS: This study contributes insights into the promising positive impact of Noom Mood on mental health and well-being outcomes, extending beyond the intervention phase. Though more rigorous studies are necessary to understand the mechanism of action at play, this exploratory study addresses critical gaps in the literature, highlighting the potential of smartphone-based mental wellness programs to lessen barriers to mental health support and improve diverse dimensions of well-being. Future research should explore the scalability, feasibility, and long-term adherence of such interventions across diverse populations.


Assuntos
Aplicativos Móveis , Humanos , Estudos Prospectivos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Inquéritos e Questionários , Aplicativos Móveis/estatística & dados numéricos , Aplicativos Móveis/normas , Promoção da Saúde/métodos , Terapia Cognitivo-Comportamental/métodos , Terapia Cognitivo-Comportamental/normas , Avaliação de Programas e Projetos de Saúde/métodos , Estados Unidos , Atenção Plena/métodos , Qualidade de Vida/psicologia
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