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1.
J Cancer Educ ; 39(4): 353-359, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38411867

RESUMO

Deaf, deafblind, and hard of hearing (DDBHH) individuals experience barriers to accessing cancer screening, including ineffective patient-physician communication when discussing screening recommendations. For other underserved communities, culturally and linguistically aligned community health navigators (CHNs) have been shown to improve cancer screening and care. A needs assessment study was conducted to identify barriers and gather recommendations for CHN training resources. A community-based participatory needs assessment was conducted from May 2022 to June 2022 using three focus groups. Eight were cancer survivors, six advocates/navigators, and three clinicians. All questions were semi-structured and covered screening barriers, observations or personal experiences, perceived usefulness of having a CHN to promote cancer screening adherence, and training resources that may be useful to American Sign Language (ASL)-proficient CHNs, who are also culturally and linguistically aligned. Out of 20 focus group participants, seven self-identified as persons of color. Data highlighted systemic, attitudinal, communication, and personal-level barriers as recurrent themes. The most frequently cited barrier was access to training that supports the role and competencies of CHNs, followed by cultural considerations, access to cancer guidelines in ASL, dialect diversity in sign language, and the health system itself. Unaddressed barriers can contribute to health disparities, such as lower preventive cancer screening rates amongst DDBHH individuals. The next step is to translate recommendations into actionable tasks for DDBHH CHN training programs. As a result, CHNs will be well-equipped to help DDBHH individuals navigate and overcome their unique barriers to cancer screening and healthcare access.


Assuntos
Agentes Comunitários de Saúde , Pesquisa Participativa Baseada na Comunidade , Detecção Precoce de Câncer , Grupos Focais , Língua de Sinais , Humanos , Feminino , Masculino , Pessoas com Deficiência Auditiva/psicologia , Adulto , Pessoa de Meia-Idade , Navegação de Pacientes , Barreiras de Comunicação , Avaliação das Necessidades , Neoplasias/diagnóstico , Neoplasias/prevenção & controle , Acessibilidade aos Serviços de Saúde , Surdez/diagnóstico
2.
Tob Control ; 2023 Dec 05.
Artigo em Inglês | MEDLINE | ID: mdl-38071532

RESUMO

BACKGROUND: In 2023, President Biden issued an executive order requiring cost-benefit analyses for new regulations to account for distributional effects. To inform new tobacco regulations, we estimate for the first time racial and ethnic disparities in spending and outcomes associated with smoking. METHODS: With the 2008-2019 Medical Expenditure Panel Survey linked to the National Health Interview Survey, n=118 084 adults-years, logit models estimate the per cent of the top 10 health conditions attributable to smoking. Two-part regression models estimate the share of and total annual healthcare spending attributable to smoking. RESULTS: White adults had higher ever-smoked rates, but minority smoking adults had twice as much of their annual medical spending associated with smoking than white smoking adults, 25% vs 12% (p<0.01). minority adults who smoked had 41% (p<0.05) higher risks of multiple chronic conditions associated with smoking than white adults. While the share of white smoking adults trying to quit declined to 53% in 2019, this desire increased to 63% for minorities. From 2008-2016, smoking comprised 7.5% of the nation's spending for white adults and 10.7% for minorities (p<0.05). In 2017-2019, this declined to 2.5% of the nation's spending for white adults and 8.9% for minorities (p<0.05). For any new antitobacco regulation, the cost savings would be $134 million per year for every 100 000 minorities averted from initiating smoking, 135% more than the $57 million saved annually for 100 000 white adults averted. IMPLICATIONS: Minority adults may benefit substantially more from antitobacco regulations and past federal cost-benefit analyses would have overlooked this.

3.
BMC Health Serv Res ; 19(1): 590, 2019 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-31429740

RESUMO

BACKGROUND: The first aim was to present descriptive data on the frequency of dental visits among older adults in Germany. The second aim was to identify the determinants of the number of dental visits using a longitudinal approach. METHODS: Longitudinal data were derived from the German Ageing Survey, which is a nationally representative sample of community-dwelling individuals ≥40 years in Germany. The frequency of dental visits in the past 12 months was recorded in the years 2002, 2008 and 2011. In order to control for time-constant unobserved heterogeneity, Poisson fixed effects regressions were used. RESULTS: While the mean number of dental visits was 2.3 (SD: 2.0) in 2002, it was 2.0 (SD: 1.7) in 2008 and 2.1 (SD: 1.7) in 2011. The frequency of dental visits declined with age (total sample and women), transitions from normal weight to overweight (total sample), changes from divorced/widowed/single/married, living separated from spouse to 'married, living together with spouse' in women and with a decrease in the number of physical illnesses (total sample and men). CONCLUSIONS: The frequency of dental visits declines with age in older adults. While some of the determinants of frequency are non-modifiable (e.g., ageing and worsening of general health), others are modifiable (e.g., change in weight category).


Assuntos
Assistência Odontológica/estatística & dados numéricos , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Feminino , Alemanha/epidemiologia , Humanos , Vida Independente , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Saúde Bucal/estatística & dados numéricos , Sobrepeso/epidemiologia , Prevalência , Cônjuges , Inquéritos e Questionários
4.
JAMA ; 332(5): 371-372, 2024 08 06.
Artigo em Inglês | MEDLINE | ID: mdl-38843041

RESUMO

This Viewpoint from AHRQ describes the plan to create a national health care extension service to disseminate actionable knowledge, with a goal to reduce the gap from evidence of clinical effectiveness to clinical practice.


Assuntos
Melhoria de Qualidade , United States Agency for Healthcare Research and Quality , Estados Unidos , Humanos , Governo Estadual , Atenção à Saúde/organização & administração
5.
Gen Comp Endocrinol ; 259: 154-160, 2018 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-29174867

RESUMO

Taeniids tapeworms are hermaphroditic helminths that gradually develop testis and ovaries in their reproductive units. The larval stage of the tapeworms named cysticercus is a vesicle that contains the scolex and proliferates asexually in the abdominal cavity of mice. Once in the host, they evaginate, attach to the gut and develop into an adult organism, the tapeworm. We have previously reported reported that T. crassiceps ORF and solium cysticerci transform steroid precursors to androgens and estrogens. Taenia crassiceps WFU cysticerci can also synthesize corticosteroids. The aim of the present work is to investigate the relationship between steroid synthesis ability and the developmental stage of the parasite T. crassiceps WFU. To this purpose, cysticerci were obtained from the abdominal cavity of female mice, manually separated in invaginated (IC) and evaginated parasites (EC) and preincubated for 24 h in DMEM plus antibiotics/antimycotics. Next step consisted in incubation for different periods in the fresh media added with tritiated androstenedione (3H-A4) or progesterone (3H-P4) and incubated for different periods. Taenia crassiceps WFU tapeworms were recovered from the intestine of golden hamsters that had been orally infected with cysticerci. The worms were pre-cultured in DMEM plus FBS and antibiotics, and then incubated without FBS for different time periods, in the presence of 3H-A4 or 3H-P4. At the end of the experiments the media from cysticerci and tapeworms were analyzed by thin layer chromatography. Results showed that testosterone synthesis was significantly higher in the evaginated cysticerci and increased with time in culture. The invaginated and evaginated cysticerci also synthesized small quantities of 17ß-estradiol (E2) and estrone. The evaginated cysticerci synthesized twice more 3H-deoxycorticosterone (3H-DOC) than the invaginated parasites, the production increased significantly with time in culture. Taenia crassiceps WFU tapeworms synthesized significant quantities of 3H-testosterone and small amounts of estrone after only 3 h of culture in the presence of 3H-A4. The tapeworms also transformed 3H-P4 to 3H-DOC and increased its synthesis after 24 h in culture. In summary, our data show the pathways that T. crassiceps WFU cysticerci use to synthesize sexual steroids in both larval developmental stages and reveals the steroidogenic capacity of the tapeworms.


Assuntos
Parasitos/crescimento & desenvolvimento , Esteroides/metabolismo , Androstenodiona/metabolismo , Animais , Cysticercus , Feminino , Camundongos , Taenia
6.
Epidemiol Infect ; 142(12): 2522-9, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24512765

RESUMO

This paper examines the importance of environmental factors (mosquito pools and home foreclosures) in human West Nile virus (WNV) transmission in California and Colorado. The role of environmental factors is investigated by applying an instrumental variable technique to a spatial filtering random-effects negative binomial model to correct for both spatial autocorrelation and endogeneity. The results suggest that mosquito pools and home foreclosures are significant in explaining the prevalence of human WNV. An innovative aspect of this research is that it emphasizes the role of home foreclosures in WNV transmission and in the allocation of resources. Knowledge of the factors associated with WNV prevalence is crucial for abatement of future outbreaks. The results suggest that more resources should be allocated to areas that have a high number of home foreclosures and mosquito pools for surveillance and mitigation of the disease.


Assuntos
Falência da Empresa , Surtos de Doenças , Habitação , Febre do Nilo Ocidental/epidemiologia , Vírus do Nilo Ocidental , Animais , California/epidemiologia , Colorado/epidemiologia , Culicidae/virologia , Humanos , Modelos Estatísticos , Prevalência , Medição de Risco , Fatores de Risco , Febre do Nilo Ocidental/transmissão
7.
Gen Comp Endocrinol ; 205: 62-7, 2014 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-24793221

RESUMO

Cysticercosis is a disease caused by the larval stage of Taenia solium cestodes that belongs to the family Taeniidae that affects a number of hosts including humans. Taeniids tapeworms are hermaphroditic organisms that have reproductive units called proglottids that gradually mature to develop testis and ovaries. Cysticerci, the larval stage of these parasites synthesize steroids. To our knowledge there is no information about the capacity of T. solium tapeworms to metabolize progesterone or other precursors to steroid hormones. Therefore, the aim of this paper was to investigate if T. solium tapeworms were able to transform steroid precursors to corticosteroids and sex steroids. T. solium tapeworms were recovered from the intestine of golden hamsters that had been orally infected with cysticerci. The worms were cultured in the presence of tritiated progesterone or androstenedione. At the end of the experiments the culture media were analyzed by thin layer chromatography. The experiments described here showed that small amounts of testosterone were synthesized from (3)H-progesterone by complete or segmented tapeworms whereas the incubation of segmented tapeworms with (3)H-androstenedione, instead of (3)H-progesterone, improved their capacity to synthesize testosterone. In addition, the incubation of the parasites with (3)H-progesterone yielded corticosteroids, mainly deoxicorticosterone (DOC) and 11-deoxicortisol. In summary, the results described here, demonstrate that T. solium tapeworms synthesize corticosteroid and sex steroid like metabolites. The capacity of T. solium tapeworms to synthesize steroid hormones may contribute to the physiological functions of the parasite and also to their interaction with the host.


Assuntos
Corticosteroides/biossíntese , Hormônios Esteroides Gonadais/biossíntese , Taenia solium/metabolismo , Androstenodiona/biossíntese , Animais , Cromatografia em Camada Fina , Cricetinae , Humanos , Progesterona/metabolismo , Testosterona/biossíntese , Trítio/metabolismo
8.
Am J Prev Med ; 2024 Jul 16.
Artigo em Inglês | MEDLINE | ID: mdl-39025246

RESUMO

INTRODUCTION: There is much concern that substance use treatment programs are rarely integrated with smoking cessation programs. Here, the first national statistics are presented on the connection between heavy vs. light smoking and the opioid epidemic. METHODS: Using the 2013-2021 Medical Expenditure Panel Survey linked to the National Health Interview Survey, N=81,400 adults-years, logit regressions estimate the impact of heavy vs. light smoking on opioid use, chronic pain, work limitations due to pain, and poor mental health. Analyses were conducted from October 2023 to May 2024. RESULTS: Only 37 percent of the population has ever smoked, but they used 69% of the nation's annual prescription opioids. Adults who smoked more than 5 cigarettes a day composed 12% of the population but used about the same number of opioids as the 63% of the population who never smoked. Adults who formerly smoked used 16% fewer opioids than adults who currently smoke (p<0.01). The percent with chronic pain during the year varied from 12.2% for adults who never smoked to 14.2% for light smoking, to 16.5% for those smoking more than a pack a day (p<0.01). Severe work limitations due to pain varied from 7.3% for adults who never smoked to 16.9% for those smoking more than a pack a day (p<0.01). Adults smoking more than a pack a day were twice as likely to report fair or poor mental health compared to those who never smoked (29.2% vs 13.6%) (p<0.01). CONCLUSIONS: As nations deal with the opioid epidemic, integrating smoking cessation programs into substance abuse treatment programs appears prudent.

9.
JAMA Netw Open ; 7(5): e2413127, 2024 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-38787558

RESUMO

Importance: Unprecedented increases in hospital occupancy rates during COVID-19 surges in 2020 caused concern over hospital care quality for patients without COVID-19. Objective: To examine changes in hospital nonsurgical care quality for patients without COVID-19 during periods of high and low COVID-19 admissions. Design, Setting, and Participants: This cross-sectional study used data from the 2019 and 2020 Agency for Healthcare Research and Quality's Healthcare Cost and Utilization Project State Inpatient Databases. Data were obtained for all nonfederal, acute care hospitals in 36 states with admissions in 2019 and 2020, and patients without a diagnosis of COVID-19 or pneumonia who were at risk for selected quality indicators were included. The data analysis was performed between January 1, 2023, and March 15, 2024. Exposure: Each hospital and week in 2020 was categorized based on the number of COVID-19 admissions per 100 beds: less than 1.0, 1.0 to 4.9, 5.0 to 9.9, 10.0 to 14.9, and 15.0 or greater. Main Outcomes and Measures: The main outcomes were rates of adverse outcomes for selected quality indicators, including pressure ulcers and in-hospital mortality for acute myocardial infarction, heart failure, acute stroke, gastrointestinal hemorrhage, hip fracture, and percutaneous coronary intervention. Changes in 2020 compared with 2019 were calculated for each level of the weekly COVID-19 admission rate, adjusting for case-mix and hospital-month fixed effects. Changes during weeks with high COVID-19 admissions (≥15 per 100 beds) were compared with changes during weeks with low COVID-19 admissions (<1 per 100 beds). Results: The analysis included 19 111 629 discharges (50.3% female; mean [SD] age, 63.0 [18.0] years) from 3283 hospitals in 36 states. In weeks 18 to 48 of 2020, 35 851 hospital-weeks (36.7%) had low COVID-19 admission rates, and 8094 (8.3%) had high rates. Quality indicators for patients without COVID-19 significantly worsened in 2020 during weeks with high vs low COVID-19 admissions. Pressure ulcer rates increased by 0.09 per 1000 admissions (95% CI, 0.01-0.17 per 1000 admissions; relative change, 24.3%), heart failure mortality increased by 0.40 per 100 admissions (95% CI, 0.18-0.63 per 100 admissions; relative change, 21.1%), hip fracture mortality increased by 0.40 per 100 admissions (95% CI, 0.04-0.77 per 100 admissions; relative change, 29.4%), and a weighted mean of mortality for the selected indicators increased by 0.30 per 100 admissions (95% CI, 0.14-0.45 per 100 admissions; relative change, 10.6%). Conclusions and Relevance: In this cross-sectional study, COVID-19 surges were associated with declines in hospital quality, highlighting the importance of identifying and implementing strategies to maintain care quality during periods of high hospital use.


Assuntos
COVID-19 , Qualidade da Assistência à Saúde , SARS-CoV-2 , Humanos , COVID-19/epidemiologia , COVID-19/terapia , COVID-19/mortalidade , Estados Unidos/epidemiologia , Estudos Transversais , Feminino , Masculino , Qualidade da Assistência à Saúde/estatística & dados numéricos , Pessoa de Meia-Idade , Idoso , Hospitalização/estatística & dados numéricos , Hospitais/estatística & dados numéricos , Mortalidade Hospitalar , Indicadores de Qualidade em Assistência à Saúde , Admissão do Paciente/estatística & dados numéricos , Admissão do Paciente/tendências , Adulto
10.
Gen Comp Endocrinol ; 188: 212-7, 2013 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-23608546

RESUMO

Cysticerci and tapeworms from Taenia crassiceps WFU, ORF and Taenia solium synthesize sex-steroid hormones in vitro. Corticosteroids increase the 17ß-estradiol synthesis by T. crassiceps cysticerci. T. crassiceps WFU cysticerci synthesize corticosteroids, mainly 11-deoxycorticosterone (DOC). The aim of this work was to investigate whether classical steroidogenic inhibitors modify the capacity of T. crassiceps WFU cysticerci to synthesize corticosteroids and sex steroid hormones. For this purpose, T. crassiceps WFU cysticerci were obtained from the abdominal cavity of mice, pre-cultured for 24h in DMEM+antibiotics/antimycotics and cultured in the presence of tritiated progesterone ((3)H-P4), androstendione ((3)H-A4), or dehydroepiandrosterone ((3)H-DHEA) plus different doses of the corresponding inhibitors, for different periods. Blanks with the culture media adding the tritiated precursors were simultaneously incubated. At the end of the incubation period, parasites were separated and media extracted with ether. The resulting steroids were separated by thin layer chromatography (TLC). Data were expressed as percent transformation of the tritiated precursors. Results showed that after 2h of exposure of the cysticerci to 100 µM formestane, the (3)H-17ß-estradiol synthesis from tritiated androstenedione was significantly inhibited. The incubation of cysticerci in the presence of (3)H-DHEA and danazol (100 nM) resulted in (3)H-androstenediol accumulation and a significant reduction of the 17ß-estradiol synthesis. The cysticerci (3)H-DOC synthesis was significantly inhibited when the parasites were cultured in the presence of different ketoconazole dosis. The drug treatments did not affect parasite's viability. The results of this study showed that corticosteroid and sex steroid synthesis in T. crassiceps WFU cysticerci can be modified by steroidogenic enzyme inhibitors. As was shown previously by our laboratory and others, parasite survival and development depends on sex steroids, therefore the inhibition of their synthesis is a good starting point exploited in situations where the inhibition of steroidogenesis could help to control the infection for the development of new treatments, or replacement of the usual therapy in resistant parasite infections. We raise the possibility that these drug actions may be beneficially.


Assuntos
Inibidores Enzimáticos/farmacologia , Esteroides/metabolismo , Taenia/efeitos dos fármacos , Taenia/metabolismo , Androstenodiona/análogos & derivados , Androstenodiona/farmacologia , Animais , Cromatografia em Camada Fina , Danazol/farmacologia , Desoxicorticosterona/farmacologia , Estradiol/metabolismo , Cetoconazol/farmacologia
11.
Int J Clin Pract ; 67(1): 66-72, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23241050

RESUMO

AIMS: Fabry disease (FD) is an X-linked inborn error of metabolism caused by alpha-galactosidase A deficiency. The Fabry Registry is an ongoing, global observational database that compiles clinical data from patients with FD. METHODS: Demographic and baseline clinical characteristics of Fabry Registry patients enrolled in Argentina were analysed and compared with patients enrolled in the rest of the world (ROW). Baseline clinical parameters included chronic kidney disease (CKD) stage, urine protein-to-creatinine ratio and left ventricular posterior wall thickness. Only data from untreated patients were included. RESULTS: As of 1 October 2010, 3752 patients were enrolled in the Registry, 70 patients from Argentina and 3682 from the ROW. Argentinean male subjects were younger than Fabry Registry male subjects enrolled in ROW: mean current age 32.5 years vs. 39.0 years for men (p = 0.0257 by t-test). The current age (mean ± standard deviation) of female subjects enrolled in Argentina was not significantly different from that of female subjects enrolled in the ROW: 40.1 ± 17.28 vs. 43.2 ±17.95 years respectively (p = 0.2967). Overall, a smaller percentage of patients from Argentina received ERT compared with patients in the ROW (54% vs. 58% respectively). When evaluated by gender, more men and fewer women in Argentina received ERT compared with ROW (85% vs. 79% for men and 27% vs. 38% for women). A larger proportion of patients in ROW had severe CKD (stage 4 or 5) compared with Argentina (9.8% vs. 0%), most likely because of the older age of the ROW population. CONCLUSIONS: The enrolment of Argentinean patients into the Fabry Registry has steadily increased, as has the inclusion of female and paediatric patients with FD. The medical community in Argentina should be aware of FD in these populations, as awareness will facilitate prompt diagnosis and initiation of treatment, thus leading to improved outcomes.


Assuntos
Doença de Fabry/epidemiologia , Adolescente , Adulto , Distribuição por Idade , Idade de Início , Idoso , Argentina/epidemiologia , Criança , Pré-Escolar , Terapia de Reposição de Enzimas/estatística & dados numéricos , Doença de Fabry/tratamento farmacológico , Feminino , Humanos , Lactente , Masculino , Pessoa de Meia-Idade , Sistema de Registros/estatística & dados numéricos , Distribuição por Sexo , Adulto Jovem
12.
Environ Health Perspect ; 131(12): 124201, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38109119

RESUMO

BACKGROUND: The exposome serves as a popular framework in which to study exposures from chemical and nonchemical stressors across the life course and the differing roles that these exposures can play in human health. As a result, data relevant to the exposome have been used as a resource in the quest to untangle complicated health trajectories and help connect the dots from exposures to adverse outcome pathways. OBJECTIVES: The primary aim of this methods seminar is to clarify and review preprocessing techniques critical for accurate and effective external exposomic data analysis. Scalability is emphasized through an application of highly innovative combinatorial techniques coupled with more traditional statistical strategies. The Public Health Exposome is used as an archetypical model. The novelty and innovation of this seminar's focus stem from its methodical, comprehensive treatment of preprocessing and its demonstration of the positive effects preprocessing can have on downstream analytics. DISCUSSION: State-of-the-art technologies are described for data harmonization and to mitigate noise, which can stymie downstream interpretation, and to select key exposomic features, without which analytics may lose focus. A main task is the reduction of multicollinearity, a particularly formidable problem that frequently arises from repeated measurements of similar events taken at various times and from multiple sources. Empirical results highlight the effectiveness of a carefully planned preprocessing workflow as demonstrated in the context of more highly concentrated variable lists, improved correlational distributions, and enhanced downstream analytics for latent relationship discovery. The nascent field of exposome science can be characterized by the need to analyze and interpret a complex confluence of highly inhomogeneous spatial and temporal data, which may present formidable challenges to even the most powerful analytical tools. A systematic approach to preprocessing can therefore provide an essential first step in the application of modern computer and data science methods. https://doi.org/10.1289/EHP12901.


Assuntos
Rotas de Resultados Adversos , Análise de Dados , Expossoma , Humanos , Saúde Pública
13.
Gen Comp Endocrinol ; 176(3): 409-14, 2012 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-22321721

RESUMO

Taenia solium and Taenia crassiceps WFU cysticerci and tapeworms have the ability to synthesize sex steroid hormones and have a functional 3ß-hydroxisteroid dehydrogenase. Corticosteroids (CS) like corticosterone and dexamethasone have been shown to stimulate in vitro estrogen production by Taenia crassiceps WFU cysticerci. The aim of this work was to study the ability of T. crassiceps WFU cysticerci to synthesize corticosteroids, and the effect of the inhibitor metyrapone on the CS synthesis. For this purpose T. crassiceps WFU cysticerci were obtained from the abdominal cavity of mice, thoroughly washed and pre-incubated in multiwells for 24 h in DMEM plus antibiotics/antimycotics. The tritiated CS precursor progesterone ((3)H-P4) was added to the culture media and parasites cultured for different periods. Blanks containing the culture media plus the (3)H-P4 were simultaneously incubated. Blanks and parasite culture media were ether extracted and analyzed by thin layer chromatography (TLC) in two different solvent systems. Corticosterone production was measured in the culture media by RIA. In some experiments metyrapone (0.1-0.5 mM) was added for 24, 48 or 72 h. Results showed that cysticerci mainly synthesized tritiated 11-deoxy corticosterone (DOC) and small amounts of corticosterone that was also detected by RIA. Small amounts of (3)H-11-deoxy cortisol were also found. Corticosteroid synthesis was time dependent. The addition of metyrapone significantly inhibited tritiated DOC, deoxycortisol and corticosterone synthesis. These results show for the first time that parasites have the capacity to synthesize CS that is modulated by metyrapone. Data suggest that DOC is the main corticosteroid in the parasites.


Assuntos
Antimetabólitos/farmacologia , Desoxicorticosterona/metabolismo , Metirapona/farmacologia , Progesterona/metabolismo , Taenia/metabolismo , Animais , Cromatografia em Camada Fina , Desoxicorticosterona/análise , Radioimunoensaio
14.
J Helminthol ; 86(4): 465-9, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22152276

RESUMO

We have shown previously that cultured Taenia crassiceps Wake Forest University (WFU) and Taenia solium cysticerci, as well as the adult worms, synthesize sex steroid hormones from [3H]steroid precursors and that androgens and oestrogens influence the in vitro development of the parasites. Glucocorticoids (GCs) are used to control the inflammation caused by T. solium cysticerci in the brain. These steroids stimulate oestrogen synthesis in several tissues. Since there is no information on the effect of GC on the endocrine function of cysticerci, we investigated the effect of natural and synthetic GCs on the synthesis of oestrogens in cultured T. crassiceps WFU cysticerci. The cysticerci were obtained from the peritoneal cavity of infected female BALB/c mice; the cysts were washed extensively and pre-cultured in Dulbecco's Modified Eagle's Medium (DMEM) plus antibiotics for 5 days. The parasites were further cultured with different doses of corticosterone, dexamethasone or the vehicle for 5 days. [3H]Dehydroepiandrosterone (3H-DHEA) was added to the media and the cysticerci were further incubated for 6 or 24 h. Media were then removed and the steroids ether-extracted. Aliquots of the media were seeded on silica gel plates and developed in solvent systems. Parasites incubated in the presence of 3H-DHEA synthesized [3H]androstenediol, [3H]testosterone and [3H]17ß-oestradiol ([3H]17ß-E2). The addition of 100 nm or higher corticosterone doses to the media increased [3H]17ß-E2 synthesis fourfold after 24 h. Dexamethasone also increased [3H]17ß-E2 synthesis. The experiments presented here show for the first time that corticosterone and the synthetic GC dexamethasone modulate the synthesis of oestrogens by cysticerci.


Assuntos
Glucocorticoides/metabolismo , Hormônios Esteroides Gonadais/metabolismo , Esteroides/metabolismo , Taenia/efeitos dos fármacos , Taenia/metabolismo , Animais , Feminino , Camundongos , Camundongos Endogâmicos BALB C
15.
J Immigr Minor Health ; 24(4): 1061-1080, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34448993

RESUMO

Cultural background influences how migrants and ethnic minority populations view and assess health. Poor oral health literacy (OHL) may be a hindrance in achieving good oral health. This systematic review summarizes the current quantitative evidence regarding OHL of migrants and ethnic minority populations. The PubMed database was searched for original quantitative studies that explore OHL as a holistic multidimensional construct or at least one of its subdimensions in migrants and ethnic minority populations. 34 publications were selected. Only 2 studies specifically addressed OHL in migrant populations. Generally, participants without migration background had higher OHL than migrant and ethnic minority populations. The latter showed lower dental service utilization, negative oral health beliefs, negative oral health behavior, and low levels of oral health knowledge. Due to its potential influence on OHL, oral health promoting behavior, attitudes, capabilities, and beliefs as well as the cultural and ethnic background of persons should be considered in medical education and oral health prevention programs.


Assuntos
Letramento em Saúde , Migrantes , Minorias Étnicas e Raciais , Etnicidade , Humanos , Grupos Minoritários , Saúde Bucal
16.
Artigo em Inglês | MEDLINE | ID: mdl-35897436

RESUMO

During the 2015-2016 Zika Virus (ZIKV) epidemic in Brazil, the geographical distributions of ZIKV infection and microcephaly outbreaks did not align. This raised doubts about the virus as the single cause of the microcephaly outbreak and led to research hypotheses of alternative explanatory factors, such as environmental variables and factors, agrochemical use, or immunizations. We investigated context and the intermediate and structural determinants of health inequalities, as well as social environment factors, to determine their interaction with ZIKV-positive- and ZIKV-negative-related microcephaly. The results revealed the identification of 382 associations among 382 nonredundant variables of Zika surveillance, including multiple determinants of environmental public health factors and variables obtained from 5565 municipalities in Brazil. This study compared those factors and variables directly associated with microcephaly incidence positive to ZIKV and those associated with microcephaly incidence negative to ZIKV, respectively, and mapped them in case and control subnetworks. The subnetworks of factors and variables associated with low birth weight and birthweight where birth incidence served as an additional control were also mapped. Non-significant differences in factors and variables were observed, as were weights of associations between microcephaly incidence, both positive and negative to ZIKV, which revealed diagnostic inaccuracies that translated to the underestimation of the scope of the ZIKV outbreak. A detailed analysis of the patterns of association does not support a finding that vaccinations contributed to microcephaly, but it does raise concerns about the use of agrochemicals as a potential factor in the observed neurotoxicity arising from the presence of heavy metals in the environment and microcephaly not associated with ZIKV. Summary: A comparative network inferential analysis of the patterns of variables and factors associated with Zika virus infections in Brazil during 2015-2016 coinciding with a microcephaly epidemic identified multiple contributing determinants. This study advances our understanding of the cumulative interactive effects of exposures to chemical and non-chemical stressors in the built, natural, physical, and social environments on adverse pregnancy and health outcomes in vulnerable populations.


Assuntos
Microcefalia , Infecção por Zika virus , Zika virus , Big Data , Brasil/epidemiologia , Feminino , Humanos , Incidência , Microcefalia/etiologia , Gravidez , Infecção por Zika virus/complicações , Infecção por Zika virus/diagnóstico , Infecção por Zika virus/epidemiologia
17.
Am J Transplant ; 11(10): 2162-72, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21749644

RESUMO

Presence of subclinical rejection (SCR) with IF/TA in protocol biopsies of renal allografts has been shown to be an independent predictor factor of graft loss. Also, intragraft Foxp3+ T(reg) cells in patients with SCR has been suggested to differentiate harmful from potentially protective infiltrates. Nonetheless, whether presence of Foxp3 T(reg) cells in patients with SCR and IF/TA may potentially protect from a deleterious graft outcome has not yet been evaluated. This is a case-control study in which 37 patients with the diagnosis of SCR and 68 control patients with no cellular infiltrates at 6-month protocol biopsies matched for age and time of transplantation were evaluated. We first confirmed that numbers of intragraft Foxp3-expressing T cells in patients with SCR positively correlates with Foxp3 demethylation at the T(reg) -specific demethylation region. Patients with SCR without Foxp3+ T(reg) cells within graft infiltrates showed significantly worse 5-year graft function evolution than patients with SCR and Foxp3+ T(reg) cells and those without SCR. When presence of SCR and IF/TA were assessed together, presence of Foxp3+ T(reg) could discriminate a subgroup of patients showing the same graft outcome as patients with a normal biopsy. Thus, presence of Foxp3+ T(reg) cells in patients with SCR even with IF/TA is associated with a favorable long-term allograft outcome.


Assuntos
Biomarcadores/metabolismo , Fatores de Transcrição Forkhead/metabolismo , Rejeição de Enxerto , Transplante de Rim , Linfócitos T Reguladores/imunologia , Adulto , Biópsia , Estudos de Casos e Controles , Feminino , Humanos , Imunossupressores/administração & dosagem , Masculino , Metilação , Pessoa de Meia-Idade , Estudos Retrospectivos
18.
Healthcare (Basel) ; 9(11)2021 Oct 21.
Artigo em Inglês | MEDLINE | ID: mdl-34828459

RESUMO

Adult immunization practices leave much to be desired. Misinformation has increased mistrust. As a result, Latino and African American populations have low rates of annual flu vaccinations and, during the COVID-19 pandemic, lag behind for COVID-19 vaccination. Historically, healthcare staff have failed to adhere to adult immunization guidelines contributing to patient infections. Healthcare staff, both clinical and non-clinical, must lead by example by making "prevention primary". Most adults may not realize they need immunizations. We recommend the following steps to increase immunization uptake: Make adult immunization a standard of patient care as we do for children. Assess immunization status at every clinical opportunity. Strongly recommend vaccinations needed. Administer needed vaccinations, multiple if warranted. Document vaccines received by your patient. Participate in your state's immunization registry and work with community organizations that can help make adult immunization the norm.

19.
Stress Health ; 37(1): 175-185, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32926523

RESUMO

Evidence-based research and interventions to address systemic institutional racism have never been more urgent. Yet, underrepresented minority (URM) professionals in research institutions who primarily produce that evidence have remained abysmally low for decades. This unique study of URM university professors assesses factors-vocational strain, role overload, discrimination, coping strategies-that contribute to health and well-being, research productivity, and ultimately their retention in high impact research positions. We administered a web-based survey assessing demographics, workplace stressors, perceived discrimination, life events, coping strategies, and physical and depressive symptoms. Study participants include 404 faculty of whom 254 are African Americans, 99 are Mexican Americans, and 51 are Puerto Ricans. Hierarchical regression analyses were employed to assess the associations between workplace stress, coping strategies, and symptoms. Results show that perceived discrimination, vocational strain, role overload, and life events directly affected physical symptoms, with self-care (p < 0.001) moderating these effects. Vocational strain and life events had direct effects on depressive symptoms with self-care (p < 0.05) and social support (p < 0.001) moderating these effects. Findings inform health care providers and university leaders about work stress and health conditions that may explain early morbidity and premature departures of URM faculty, and proffer institutional interventions to retain these faculty.


Assuntos
Etnicidade , Docentes , Grupos Minoritários , Estresse Ocupacional , Racismo , Depressão/etnologia , Etnicidade/psicologia , Etnicidade/estatística & dados numéricos , Docentes/psicologia , Docentes/estatística & dados numéricos , Nível de Saúde , Humanos , Grupos Minoritários/psicologia , Grupos Minoritários/estatística & dados numéricos , Estresse Ocupacional/etnologia , Racismo/psicologia
20.
Steroids ; 164: 108733, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-32980365

RESUMO

Glioblastoma (GB) is the most common and aggressive primary brain tumor in adult humans. Therapeutic resistance and tumor recurrence after surgical resection contributes to a poor prognosis for glioblastoma patients. Men are known to be more likely than women to develop an aggressive form of GB. Although the reasons for this disparity remain poorly understood, differences in sex steroids have emerged as a leading explanation. Studies indicate that GB-derived cells express androgen receptors (ARs) and synthesize androgens, suggesting that androgens may have a role in the tumor pathogenesis. Thus, our objective was to investigate the effects of the 5α-reductase enzyme inhibitor dutasteride, the AR antagonists cyproterone and flutamide, and combinations of these drugs on the metabolism, proliferation, and invasion capacity of GB-derived U87 cells. We also examined the effects of three natural androgens testosterone, androstenedione and dihydrotestosterone (T, A4, and DHT) on these cells. Cell metabolism was investigated by MTT assay, proliferation was assessed by the bromodeoxyuridine (BrdU) incorporation assay, and invasion was assessed by Boyden chamber assay. The results revealed that T and especially DHT, but not A4, increased U87 cell metabolism and proliferation. Following these findings, we examined the effect of adding dutasteride, cyproterone, or flutamide to the culture media and found that they all significantly decreased cell metabolism and proliferation. Dutasteride also significantly reduced cell invasion. Moreover, any combination of these drugs enhanced their inhibitory effects; the combination of dutasteride to flutamide was most effective at decreasing GB cell proliferation. Our results suggest that administering a combination of AR antagonists and enzyme blockers may be a more effective alternative treatment for GB.


Assuntos
Inibidores de 5-alfa Redutase/farmacologia , Antagonistas de Androgênios/farmacologia , Androgênios/fisiologia , Neoplasias Encefálicas/patologia , Proliferação de Células/efeitos dos fármacos , Dutasterida/farmacologia , Glioblastoma/patologia , Invasividade Neoplásica/prevenção & controle , Inibidores de 5-alfa Redutase/administração & dosagem , Antagonistas de Androgênios/administração & dosagem , Neoplasias Encefálicas/metabolismo , Linhagem Celular Tumoral , Dutasterida/administração & dosagem , Glioblastoma/metabolismo , Humanos
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