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Future far-infrared astrophysics observatories will require focal plane arrays containing thousands of ultrasensitive, superconducting detectors, each of which require efficient optical coupling to the telescope fore-optics. At longer wavelengths, many approaches have been developed, including feedhorn arrays and macroscopic arrays of lenslets. However, with wavelengths as short as 25 µm, optical coupling in the far infrared remains challenging. In this paper, we present an approach to fabricate far-infrared monolithic silicon microlens arrays using grayscale lithography and deep reactive ion etching. The fabricated microlens arrays presented here are designed for two different wavebands: 25-40 µm and 135-240 µm. The microlens arrays have sags as deep as 150 µm, are hexagonally packed with a pixel pitch of 900 µm, and have an overall size as large as 80 by 15 mm. We compare an as-fabricated lens profile to the design profile and calculate that the fabricated lenses would achieve 84% encircled power for the designed detector, which is only 3% less than the designed performance. We also present methods developed for antireflection coating microlens arrays and for a silicon-to-silicon die bonding process to hybridize microlens arrays with detector arrays.
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BACKGROUND: A challenge facing many Academic Health Centers (AHCs) attempting to revise health professions education to include the impact of racism as a social and structural determinant of health (SSDoH) is a lack of broad faculty expertise to reinforce and avoid undermining learning modules addressing this topic. To encourage an institutional culture that is in line with new anti-racism instruction, we developed a six-part educational series on the history of racism in America and its impact on contemporary health inequities for teaching structural competency to health professions academicians. METHODS: We developed a six-hour elective continuing education (CE) series for faculty and staff with the following objectives: (1) describe and discuss race as a social construct; (2) describe and discuss the decolonization of the health sciences and health care; (3) describe and discuss the history of systemic racism and structural violence from a socio-ecological perspective; and (4) describe and discuss reconciliation and repair in biomedicine. The series was spread over a six-month period and each monthly lecture was followed one week later by an open discussion debriefing session. Attendees were assessed on their understanding of each objective before and after each series segment. RESULTS: We found significant increases in knowledge and understanding of each objective as the series progressed. Attendees reported that the series helped them grapple with their discomfort in a constructive manner. Self-selected attendees were overwhelmingly women (81.8%), indicating a greater willingness to engage with this material than men. CONCLUSIONS: The series provides a model for AHCs looking to promote anti-racism and structural competency among their faculty and staff.
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Racismo , Humanos , Racismo/história , Estados Unidos , Docentes de Medicina , Currículo , Masculino , História do Século XX , Educação Médica Continuada/história , FemininoRESUMO
Limited women's health and cancer prevention materials are available that have been validated for vulnerable populations. Such materials are especially important for groups, which have intermittent and typically low-quality healthcare access and are at greatest risk for missing out on women's health and cancer prevention screening. Health education materials are developed from heterogeneous sources. Clinical and research teams have minimal guidance in terms of sources, timelines, outputs, and evaluation in the development of such materials. The goal of this paper is to share our process in developing and evaluating an up-to-date women's health and cancer prevention learning guide appropriate for a target population of women involved in the criminal justice system. A ten-page learning guide was drafted using the current evidence-based data, with the objective of providing educational material on four topics: cervical cancer, breast cancer, sexually transmitted infection, and unintended pregnancy prevention. The learning guide was then tested on a convenience sample of 33 women at a local county jail. Feedback was organized into three parts in which the participants Responded to open-ended question, "What is missing?" Rated each of the four topics for design and content Completed a usability assessment Common themes were participants' interest in learning about side effects of birth control and wanting more information on testing and treatment, specifically for sexually transmitted infections (STIs). Women were satisfied with the cancer prevention information presented to them. This report provides a framework for cancer prevention researchers who are developing health education materials for vulnerable populations.
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Neoplasias , Infecções Sexualmente Transmissíveis , Feminino , Educação em Saúde , Acessibilidade aos Serviços de Saúde , Humanos , Neoplasias/prevenção & controle , Gravidez , Infecções Sexualmente Transmissíveis/prevenção & controle , Interface Usuário-ComputadorRESUMO
BACKGROUND: Adrenocortical carcinoma (ACC) is a rare but aggressive malignancy, and many prognostic factors that influence survival remain undefined. Individually, the GRAS (Grade, Resection status, Age, and Symptoms of hormone hypersecretion) parameters have demonstrated their prognostic value in ACC. This study aimed to assess the value of a cumulative GRAS score as a prognostic indicator after ACC resection. METHODS: A retrospective cohort study of adult patients who underwent surgical resection for ACC between 1993 and 2014 was performed using the United States Adrenocortical Carcinoma Group (US-ACCG) database. A sum GRAS score was calculated for each patient by adding one point each when the criteria were met for tumor grade (Weiss criteria ≥ 3 or Ki67 ≥ 20%), resection status (micro- or macroscopically positive margin), age (≥ 50 years), and preoperative symptoms of hormone hypersecretion (present). Overall survival (OS) and disease-free survival (DFS) by cumulative GRAS score were analyzed by the Kaplan-Meier method and log-rank test. RESULTS: Of the 265 patients in the US-ACCG database, 243 (92%) had sufficient data available to calculate a cumulative GRAS score and were included in this analysis. The 265 patients comprised 23 patients (10%) with a GRAS of 0, 52 patients (21%) with a GRAS of 1, 92 patients (38%) with a GRAS of 2, 63 patients (26%) with a GRAS of 3, and 13 patients (5%) with a GRAS of 4. An increasing GRAS score was associated with shortened OS (p < 0.01) and DFS (p < 0.01) after index resection. CONCLUSION: In this retrospective analysis, the cumulative GRAS score effectively stratified OS and DFS after index resection for ACC. Further prospective analysis is required to validate the cumulative GRAS score as a prognostic indicator for clinical use.
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Neoplasias do Córtex Suprarrenal , Carcinoma Adrenocortical , Neoplasias do Córtex Suprarrenal/cirurgia , Carcinoma Adrenocortical/cirurgia , Adulto , Intervalo Livre de Doença , Humanos , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Estados Unidos/epidemiologiaRESUMO
Correctional systems in several U.S. states have entered into partnerships with academic medical centers (AMCs) to provide healthcare for persons who are incarcerated. One AMC specializing in the care of incarcerated patients is the University of Texas Medical Branch at Galveston (UTMB), which hosts the only dedicated prison hospital in the U.S. and supplies 80% of the medical care for the entire Texas Department of Criminal Justice (TDCJ). Nearly all medical students and residents at UTMB take part in the care of the incarcerated. This research, through qualitative exploration using focus group discussions, sets out to characterize the correctional care learning environment medical trainees enter. Participants outlined an institutional culture of low prioritization and neglect that dominated the learning environment in the prison hospital, resulting in treatment of the incarcerated as second-class patients. Medical learners pointed to delays in care, both within the prison hospital and within the TDCJ system, where diagnostic, laboratory, and medical procedures were delivered to incarcerated patients at a lower priority compared to free-world patients. Medical learners elaborated further on ethical issues that included the moral judgment of those who are incarcerated, bias in clinical decision making, and concerns for patient autonomy. Medical learners were left to grapple with complex challenges like the problem of dual loyalties without opportunities to critically reflect upon what they experienced. This study finds that, without specific vulnerable populations training for both trainees and correctional care faculty to address these institutional dynamics, AMCs risk replicating a system of exploitation and neglect of incarcerated patients and thereby exacerbating health inequities.
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Educação Médica , Estudantes de Medicina , Centros Médicos Acadêmicos , Atenção à Saúde , Humanos , PrisõesRESUMO
BACKGROUND: The 7th AJCC T-stage system for adrenocortical carcinoma (ACC), based on size and extra-adrenal invasion, does not adequately stratify patients by survival. Lymphovascular invasion (LVI) is a known poor prognostic factor. We propose a novel T-stage system that incorporates LVI to better risk-stratify patients undergoing resection for ACC. METHOD: Patients undergoing curative-intent resections for ACC from 1993 to 2014 at 13 institutions comprising the US ACC Group were included. Primary outcome was disease-specific survival (DSS). RESULTS: Of the 265 patients with ACC, 149 were included for analysis. The current T-stage system failed to differentiate patients with T2 versus T3 disease (p = 0.10). Presence of LVI was associated with worse DSS versus no LVI (36 mo vs. 168 mo; p = 0.001). After accounting for the individual components of the current T-stage system (size, extra-adrenal invasion), LVI remained a poor prognostic factor on multivariable analysis (hazard ratio 2.14, 95% confidence interval 1.05-4.38, p = 0.04). LVI positivity further stratified patients with T2 and T3 disease (T2: 37 mo vs. median not reached; T3: 36 mo vs. 96 mo; p = 0.03) but did not influence survival in patients with T1 or T4 disease. By incorporating LVI, a new T-stage classification system was created: [T1: ≤ 5 cm, (-)local invasion, (+/-)LVI; T2: > 5 cm, (-)local invasion, (-)LVI OR any size, (+)local invasion, (-)LVI; T3: > 5 cm, (-)local invasion, (+)LVI OR any size, (+)local invasion, (+)LVI; T4: any size, (+)adjacent organ invasion, (+/-)LVI]. Each progressive new T-stage group was associated with worse median DSS (T1: 167 mo; T2: 96 mo; T3: 37 mo; T4: 15 mo; p < 0.001). CONCLUSIONS: Compared with the current T-stage system, the proposed T-stage system, which incorporates LVI, better differentiates T2 and T3 disease and accurately stratifies patients by disease-specific survival. If externally validated, this T-stage classification should be considered for future AJCC staging systems.
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Neoplasias do Córtex Suprarrenal/patologia , Adrenalectomia/mortalidade , Carcinoma Adrenocortical/secundário , Neoplasias do Córtex Suprarrenal/classificação , Neoplasias do Córtex Suprarrenal/cirurgia , Carcinoma Adrenocortical/classificação , Carcinoma Adrenocortical/cirurgia , Feminino , Seguimentos , Humanos , Metástase Linfática , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica , Estadiamento de Neoplasias , Estudos Retrospectivos , Fatores de Risco , Taxa de Sobrevida , Resultado do Tratamento , Carga Tumoral , Estados UnidosRESUMO
BACKGROUND: Adrenocortical carcinoma (ACC) is a rare and aggressive cancer. This report describes factors and outcomes associated with resection of extra-adrenal organs en bloc during index adrenalectomy. METHODS: Patients who underwent ACC resection for non-metastatic disease from 1993 to 2014 at 13 participating institutions of the US-ACC Group were included in the study. Factors associated with en bloc resection were assessed by uni- and multivariate analysis. The primary end point was overall survival. RESULTS: In this study, 167 patients were included and categorized as adrenalectomy with en bloc resection (AdEBR) if they had extra-adrenal organs removed or adrenalectomy (Ad) if they did not. The demographics were similar between the AdEBR (n = 68, 40.7%) and Ad groups, including age, gender, race, American Society of Anesthesiology (ASA) class, and body mass index (BMI). The AdEBR group had larger tumors (13 vs. 10 cm), more open operations (97.1 vs. 63.6%), and more lymph node dissections (LNDs) (36.8 vs. 12.1%). The most common organs removed were kidney (55.9%), liver (27.9%), and spleen (23.5%). Multiple organs were removed in 38.2% (n = 26) of the patients. Margin-negative resections were similar between the two groups. In the multivariate Cox regression adjusted for T and N stages, LND, margin, size, and hormone hypersecretion, en bloc resection was not associated with improved survival (hazard ratio [HR], 1.42; p = 0.323). CONCLUSION: The study findings validated current practice by showing that en bloc resection should occur at index adrenalectomy for ACC when a T4 lesion is suspected pre- or intraoperatively, or when it is necessary to avoid tumor rupture. However, in this study, when a negative margin resection was otherwise achieved, removal of extra-adrenal organs en bloc was not associated with additional survival benefit.
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Neoplasias do Córtex Suprarrenal/cirurgia , Adrenalectomia/mortalidade , Carcinoma Adrenocortical/cirurgia , Bases de Dados Factuais , Excisão de Linfonodo/mortalidade , Neoplasias do Córtex Suprarrenal/patologia , Carcinoma Adrenocortical/patologia , Adulto , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Taxa de SobrevidaRESUMO
OBJECTIVE: To evaluate conditional disease-free survival (CDFS) for patients who underwent curative intent surgery for adrenocortical carcinoma (ACC). BACKGROUND: ACC is a rare but aggressive tumor. Survival estimates are usually reported as survival from the time of surgery. CDFS estimates may be more clinically relevant by accounting for the changing likelihood of disease-free survival (DFS) according to time elapsed after surgery. METHODS: CDFS was assessed using a multi-institutional cohort of patients. Cox proportional hazards models were used to evaluate factors associated with DFS. Three-year CDFS (CDFS3) estimates at "x" year after surgery were calculated as follows: CDFS3â=âDFS(x+3)/DFS(x). RESULTS: One hundred ninety-two patients were included in the study cohort; median patient age was 52 years. On presentation, 36% of patients had a functional tumor and median size was 11.5âcm. Most patients underwent R0 resection (75%) and 9% had N1 disease. Overall 1-, 3-, and 5-year DFS was 59%, 34%, and 22%, respectively. Using CDFS estimates, the probability of remaining disease free for an additional 3 years given that the patient had survived without disease at 1, 3, and 5 years, was 43%, 53%, and 70%, respectively. Patients with less favorable prognosis at baseline demonstrated the greatest increase in CDFS3 over time (eg, capsular invasion: 28%-88%, Δ60% vs no capsular invasion: 51%-87%, Δ36%). CONCLUSIONS: DFS estimates for patients with ACC improved dramatically over time, in particular among patients with initial worse prognoses. CDFS estimates may provide more clinically relevant information about the changing likelihood of DFS over time.
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Neoplasias do Córtex Suprarrenal/cirurgia , Carcinoma Adrenocortical/cirurgia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Bases de Dados Factuais , Intervalo Livre de Doença , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Resultado do Tratamento , Adulto JovemRESUMO
BACKGROUND: Lymph node metastasis is an established predictor of poor outcome for adrenocortical carcinoma (ACC); however, routine lymphadenectomy during surgical resection of ACC is not widely performed and its therapeutic role remains unclear. METHODS: Patients undergoing margin-negative resection for localized ACC were identified from a multi-institutional database. Patients were stratified into 2 groups based on the surgeon's effort or not to perform a lymphadenectomy as documented in the operative note. Clinical, pathologic, and outcome data were compared between the 2 groups. RESULTS: Of 120 patients who met inclusion criteria from 1993 to 2014, 32 (27 %) underwent lymphadenectomy. Factors associated with lymphadenectomy were tumor size (12 vs. 9.5 cm; p = .007), palpable mass at presentation (26 vs. 12 %; p = .07), suspicious lymph nodes on preoperative imaging (44 vs. 7 %; p < .001), and need for multivisceral resection (78 vs. 36 %; p < .001). Median number of lymph nodes harvested was higher in the lymphadenectomy group (5.5 vs. 0; p < .001). In-hospital mortality (0 vs. 1.3 %; p = .72) and grade 3/4 complication rates (0 vs. 12 %; p = .061) were not significantly different. Patients who underwent lymphadenectomy had improved overall survival (5-year 76 vs. 59 %; p = .041). The benefit of lymphadenectomy on overall survival persisted on multivariate analysis (HR = 0.17; p = .006) controlling for adverse preoperative and intraoperative factors associated with lymphadenectomy, such as tumor size, palpable mass, irregular tumor edges, suspicious nodes on imaging, and multivisceral resection. CONCLUSIONS: In this multicenter study of adrenocortical carcinoma patients undergoing R0 resection, the surgeon's effort to dissect peritumoral lymph nodes was independently associated with improved overall survival.
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Neoplasias do Córtex Suprarrenal/patologia , Carcinoma Adrenocortical/secundário , Excisão de Linfonodo , Linfonodos/cirurgia , Neoplasias do Córtex Suprarrenal/cirurgia , Adrenalectomia/efeitos adversos , Carcinoma Adrenocortical/cirurgia , Adulto , Feminino , Mortalidade Hospitalar , Humanos , Excisão de Linfonodo/efeitos adversos , Linfonodos/diagnóstico por imagem , Metástase Linfática , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Taxa de Sobrevida , Carga TumoralRESUMO
INTRODUCTION: Multigland disease (MGD) accounts for 15% of sporadic primary hyperparathyroidism (pHPT). Several studies have reported a link between obesity and calcium metabolism (e.g., increased incidence of pHPT, higher levels of parathyroid hormone, lower vitamin D levels, and larger parathyroid glands). Obese patients have also been shown to require reoperation for persistent/recurrent pHPT more often than nonobese controls. We hypothesize that obese patients may have a higher prevalence of MGD. METHODS: This was a retrospective review of a prospectively collected parathyroid database that included adult patients with sporadic pHPT, who underwent initial parathyroidectomy between 1999 and 2013. Demographic, clinicopathologic, operative, and laboratory data were assessed for associations with MGD. RESULTS: Of 1305 consecutive patients, 200 (15%) had MGD. Median age was 59 y. Univariate analyses demonstrated that MGD was associated with age > 60 y, higher body mass index (BMI), history of lithium therapy, lower 24-h urine calcium excretion, higher serum alkaline phosphatase levels, and smaller size of the first excised parathyroid gland. On multivariate analyses, predictors of MGD were BMI 30-39.9 kg/m(2) (odds ratio [OR] 1.5; 95% confidence interval [CI] 1.2-2.5), BMI ≥ 40 kg/m(2) (OR 1.8; 95% CI 1.3-3.1), and smaller size of the first excised parathyroid (OR 0.7; 95% CI 0.6-0.8). CONCLUSIONS: This study demonstrates a higher incidence of MGD in obese and morbidly obese patients. Due to a higher risk of MGD, surgeons should have a lower threshold to perform bilateral exploration in obese patients, especially if the first excised parathyroid gland is relatively small.
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Índice de Massa Corporal , Hiperparatireoidismo Primário/etiologia , Obesidade/complicações , Adulto , Idoso , Feminino , Seguimentos , Humanos , Hiperparatireoidismo Primário/epidemiologia , Hiperparatireoidismo Primário/cirurgia , Incidência , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Obesidade/diagnóstico , Paratireoidectomia , Estudos Retrospectivos , Fatores de RiscoRESUMO
BACKGROUND: Adrenocortical carcinoma (ACC) is a rare and aggressive malignancy with limited therapeutic options beyond surgical resection. The characteristics of actual long-term survivors following surgical resection for ACC have not been previously reported. METHOD: Patients who underwent resection for ACC at one of 13 academic institutions participating in the US Adrenocortical Carcinoma Group from 1993 to 2014 were analyzed. Patients were stratified into four groups: early mortality (died within 2 years), late mortality (died within 2-5 years), actual 5-year survivor (survived at least 5 years), and actual 10-year survivor (survived at least 10 years). Patients with less than 5 years of follow-up were excluded. RESULTS: Among the 180 patients available for analysis, there were 49 actual 5-year survivors (27%) and 12 actual 10-year survivors (7%). Patients who experienced early mortality had higher rates of cortisol-secreting tumors, nodal metastasis, synchronous distant metastasis, and R1 or R2 resections (all P < 0.05). The need for multi-visceral resection, perioperative blood transfusion, and adjuvant therapy correlated with early mortality. However, nodal involvement, distant metastasis, and R1 resection did not preclude patients from becoming actual 10-year survivors. Ten of twelve actual 10-year survivors were women, and of the seven 10-year survivors who experienced disease recurrence, five had undergone repeat surgery to resect the recurrence. CONCLUSION: Surgery for ACC can offer a 1 in 4 chance of actual 5-year survival and a 1 in 15 chance of actual 10-year survival. Long-term survival was often achieved with repeat resection for local or distant recurrence, further underscoring the important role of surgery in managing patients with ACC. J. Surg. Oncol. 2016;114:971-976. © 2016 Wiley Periodicals, Inc.
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Neoplasias do Córtex Suprarrenal/mortalidade , Neoplasias do Córtex Suprarrenal/cirurgia , Carcinoma Adrenocortical/mortalidade , Carcinoma Adrenocortical/cirurgia , Adulto , Idoso , Bases de Dados Factuais , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Análise de Sobrevida , Resultado do Tratamento , Estados Unidos/epidemiologiaRESUMO
BACKGROUND: Due to the increased adoption of cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC), patients with malignant peritoneal mesothelioma (MPM) have seen improved outcomes. We aimed to evaluate and synthesize the recent published literature. METHODS: The review was conducted according to the recommendation of the Meta-Analysis of Observational Studies in Epidemiology group with prespecified inclusion and exclusion criteria. The DEALE method was used to combine mortality rates, and imputation techniques were used to calculate standard errors. Meta-regression techniques were used to synthesize data. Publication bias was assessed using funnel plots. RESULTS: Of 6,528 citations collected, 20 articles reporting on 1,047 patients were included in the analysis. The median age was 51 years (interquartile range 49-55), with 59 % (54-67) female. The median peritoneal carcinomatosis index score was 19 (16-23). Complete cytoreduction (CC0, 1) was performed in 67 % (46-93 %) of patients. Pooled estimates of survival yielded a 1-, 3- and 5-year survival of 84, 59, and 42 %, respectively. Patients receiving early postoperative intraperitoneal chemotherapy [EPIC] (44 %) and those receiving cisplatin intraperitoneal chemotherapy alone (48 %) or in combination (44 %) had an improved 5-year survival. CONCLUSIONS: While CRS + HIPEC has led to an improved survival for patients with MPM compared to historic data, heterogeneity of studies precludes generalizable inferences. EPIC chemotherapy and cisplatin chemoperfusion may infer survival benefit.
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Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Quimioterapia do Câncer por Perfusão Regional , Procedimentos Cirúrgicos de Citorredução , Hipertermia Induzida , Neoplasias Pulmonares/terapia , Mesotelioma/terapia , Neoplasias Peritoneais/terapia , Quimioterapia Adjuvante , Terapia Combinada , Feminino , Humanos , Neoplasias Pulmonares/patologia , Masculino , Mesotelioma/patologia , Mesotelioma Maligno , Estadiamento de Neoplasias , Neoplasias Peritoneais/secundário , PrognósticoRESUMO
BACKGROUND: Internationally, the utilization of minimally invasive techniques for gastric cancer resection has been increasing since first introduced in 1994. In the USA, the feasibility and safety of these techniques for cancer have not yet been demonstrated. METHODS: The University HealthSystem Consortium database was queried for gastrectomies performed between 2008 and 2013. Any adult patient with an abdominal visceral malignancy that necessitated gastric resection was included in the cohort. Clinicopathological and in-hospital outcome metrics were collected for open, laparoscopic, and robotic procedures. RESULTS: Open gastrectomies comprised 89.5% of the total study group, while 8.2% of procedures were performed laparoscopically, and 2.3% were performed with robotic assistance. When accounting for disparities in patient severity of illness and risk of mortality subclass designations, there were no significant differences in mean length of stay, 30-day readmission, and in-hospital mortality between the three groups; however, mean total cost was highest in the robotic-assisted group (P = 0.017). Overall, complication rates were also similar; however, there was a higher incidence of superficial infection in the laparoscopic group (P = 0.013) and a higher incidence of venous thromboembolism in the robotic group (P = 0.038). CONCLUSION: Despite widespread adoption for benign indications, minimally invasive gastrectomy for cancer remains underutilized in the USA. In these patients, laparoscopic and robot-assisted gastrectomies appear to be comparable to open resection with respect to overall complications, length of stay, 30-day readmission, and in-hospital mortality. However, when employing minimally invasive techniques, infection and thromboembolism risk reduction strategies should be emphasized in the operative and postoperative periods.
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Centros Médicos Acadêmicos/estatística & dados numéricos , Gastrectomia/métodos , Laparoscopia/estatística & dados numéricos , Procedimentos Cirúrgicos Robóticos/estatística & dados numéricos , Neoplasias Gástricas/cirurgia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Gastrectomia/estatística & dados numéricos , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento , Estados Unidos , Adulto JovemRESUMO
RATIONALE: The link between obesity, hyperleptinemia, and development of cardiovascular disease is not completely understood. Increases in leptin have been shown to impair leptin signaling via caveolin-1-dependent mechanisms. However, the role of hyperleptinemia versus impaired leptin signaling in adipose tissue is not known. OBJECTIVE: To determine the presence and significance of leptin-dependent increases in adipose tissue caveolin-1 expression in humans. METHODS AND RESULTS: We designed a longitudinal study to investigate the effects of increases in leptin on adipose tissue caveolin-1 expression during weight gain in humans. Ten volunteers underwent 8 weeks of overfeeding, during which they gained an average weight of 4.1±1.4 kg, with leptin increases from 7±3.8 to 12±5.7 ng/mL. Weight gain also resulted in changes in adipose tissue caveolin-1 expression, which correlated with increases in leptin (rho=0.79, P=0.01). In cultured human white preadipocytes, leptin increased caveolin-1 expression, which in turn impaired leptin cellular signaling. Functionally, leptin decreased lipid accumulation in differentiating human white preadipocytes, which was prevented by caveolin-1 overexpression. Further, leptin decreased perilipin and fatty acid synthase expression, which play an important role in lipid storage and biogenesis. CONCLUSIONS: In healthy humans, increases in leptin, as seen with modest weight gain, may increase caveolin-1 expression in adipose tissue. Increased caveolin-1 expression in turn impairs leptin signaling and attenuates leptin-dependent lowering of intracellular lipid accumulation. Our study suggests a leptin-dependent feedback mechanism that may be essential to facilitate adipocyte lipid storage during weight gain.
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Tecido Adiposo Branco/metabolismo , Caveolina 1/metabolismo , Hiperfagia/metabolismo , Leptina/metabolismo , Transdução de Sinais/fisiologia , Aumento de Peso/fisiologia , Adipócitos Brancos/metabolismo , Tecido Adiposo Branco/citologia , Adulto , Células Cultivadas , Retroalimentação Fisiológica/fisiologia , Feminino , Humanos , Metabolismo dos Lipídeos/fisiologia , Estudos Longitudinais , Masculino , Células-Tronco/metabolismo , Adulto JovemRESUMO
OBJECTIVE: Given their vulnerable health status and resource constraints, the perspectives of women with criminal-legal involvement (WCLI) are important but not usually represented in the literature on vaccine interest and vaccine hesitancy. This study aims to examine how the COVID-19 pandemic and vaccine affected the influenza vaccine uptake among WCLI. METHODS: A cross-sectional secondary analysis was conducted using data collected from the Tri-City study, which followed WCLI in three U.S. cities from 2019 to 2023. We mapped the distribution of influenza vaccine uptake in 2019-2023 and developed a composite outcome that reflected participants' patterns of Y/N to influenza vaccine, which were categorized into four groups: Influenza Vaccine Supportive, Influenza Vaccine Adaptive, Influenza Vaccine Discontinued, and Influenza Vaccine Resistant. RESULTS: Out of 507 people: 23.7% were Supportive, 8.5% Adaptive, 15.2% Discontinued and 38.3% Resistant. People who received the COVID vaccine had significantly lower odds of being identified as Discontinued (OR = 0.42, 95%CI = 0.20-0.87, p = .020) and Resistant (OR = 0.23, 95%CI = 0.13-0.43, p < .001), compared to the Supportive group. Mistrust toward COVID-19-related information was a significant independent predictor of being Adaptive (OR = 1.59, 95%CI = 1.08-2.35, p = .019), Discontinued (OR = 1.61, 95%CI = 1.15-2.25, p = .006), and Resistant (OR = 1.54, 95%CI = 1.19-2.00, p < .001) relative to Supportive. CONCLUSIONS: Vaccine hesitancy poses significant challenges to public health efforts, with apparent dampening effect across vaccines. Public health messaging and clinical interactions informed by best practices in communication tailored to the lived experience of all people, including women with criminal-legal system involvement, will be necessary to inform future interventions aimed at increasing vaccine uptake.
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Vacinas contra COVID-19 , COVID-19 , Vacinas contra Influenza , Influenza Humana , Hesitação Vacinal , Humanos , Feminino , COVID-19/prevenção & controle , Vacinas contra Influenza/administração & dosagem , Vacinas contra Influenza/imunologia , Estudos Transversais , Adulto , Pessoa de Meia-Idade , Influenza Humana/prevenção & controle , Hesitação Vacinal/estatística & dados numéricos , Hesitação Vacinal/psicologia , Vacinas contra COVID-19/administração & dosagem , Vacinação/psicologia , Vacinação/estatística & dados numéricos , SARS-CoV-2/imunologia , Estados Unidos , Adulto Jovem , Idoso , AdolescenteRESUMO
OBJECTIVES: This study aimed to discover how the COVID-19 pandemic altered the implementation of the social model of recovery in sober living homes (SLHs). Researchers analyzed associations between residents' feelings of interconnectedness, social service utilization, and relapse predictors throughout the pandemic. This study provides an understanding of how the COVID-19 pandemic impacted treatment of substance use disorder (SUD). METHODS: This study used retrospective surveyed data from 105 SLH residents. Correlational analysis was used to determine the relationship between social service use, social connectivity, and relapse predictors at three different time points: February 2020, December 2020, and June 2021. Three residents underwent additional interviews. RESULTS: There was a decline in social service utilization from February 2020 to December 2020 with an associated decline in feelings of social connectivity. From December 2020 to June 2021, there was an increase in residents' use of social services with an associated increase in connectivity. There was a significant negative correlation between relapse predictors and number of supportive services used in February 2020 ( r = -0.217, P < 0.05) and in December 2020 ( r = -0.352, P < 0.001). In June 2020, there was a significant negative correlation between interconnectedness and relapse predictors ( r = -0.297, P < 0.05). The number of interviews was not sufficient for formal qualitative analysis. CONCLUSIONS: The results suggest the COVID-19 pandemic possibly interrupted the course of recovery in SLHs. These findings offer insight to how the pandemic impacted individuals recovering from SUD and suggest that SUD treatment professionals should develop interventions to enhance social connectivity to deploy in response to global stressors.
Assuntos
COVID-19 , Transtornos Relacionados ao Uso de Substâncias , Humanos , Pandemias , Estudos Retrospectivos , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Transtornos Relacionados ao Uso de Substâncias/terapia , RecidivaRESUMO
OBJECTIVE: To quantify racial disparities in mortality and post-hospitalization outcomes among incarcerated individuals that were hospitalized during their incarceration period. METHODS: We designed a retrospective cohort study using administrative and hospital data collected from a preferred healthcare referral center for all Massachusetts jails and prisons between January 2011 and December 2018 with linkage to Massachusetts Vital Records and Statistics. We identified 4260 incarcerated individuals with complete data on race/ethnicity that were hospitalized during the study period. The primary study indicators were age, race, ethnicity, length of hospital stay, Elixhauser comorbidity score, incarceration facility type, and number of hospital admissions. The primary outcome was time to death. RESULTS: Of the incarcerated individuals that were hospitalized, 2606 identified as White, 1214 identified as Black, and 411 people who identified as some other race. The hazard of death significantly increased by 3% (OR: 1.03; 95% CI: 1.02-1.03) for each additional yearly increase in age. After adjusting for the interaction between race and age, Black race was significantly associated with 3.01 increased hazard (95% CI: 1.75-5.19) of death for individuals hospitalized while incarcerated compared to White individuals hospitalized while incarcerated. Hispanic ethnicity and being incarcerated in a prison facility was not associated with time to mortality, while increased mean Elixhauser score (HR: 1.07; 95% CI: 1.06-1.08) and ≥ 3 hospital admissions (HR: 2.47; 95% CI: 2.07-2.95) increased the hazard of death. CONCLUSIONS: Our findings suggest disparities exist in the mortality outcomes among Black and White individuals who are hospitalized during incarceration, with an increased rate of death among Black individuals. Despite hypothesized equal access to healthcare within correctional facilities, our findings suggest that incarcerated and hospitalized Black individuals may experience worse disparities than their White counterparts, which has not been previously explored or reported in the literature. In addition to decarceration, advocacy, and political efforts, increased efforts to support research access to datasets of healthcare outcomes, including hospitalization and death, for incarcerated people should be encouraged. Further research is needed to identify and address the implicit and explicit sources of these racial health disparities across the spectrum of healthcare provision.
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Clinical trials conducted with incarcerated populations are rare. We present a case example of one such jail-based cancer prevention clinical trial to demonstrate the importance of including a theory-driven approach to intervention framing, novel experimental designs to boost access to low-risk trials, and retention strategies for long-term follow-up of hard-to-reach populations. As such we offer a social determinant of health framework to ensure cancer prevention research is conducted through the lenses of health promotion and health equity. Deviations from the gold-standard randomized control design, transparent systematic allotment, and street-based outreach retention strategies contribute to the feasibility of conducting clinical trials in carceral settings and after people leave jail. Best practices presented can be used in design and conduct of future clinical trials with criminal legal system-involved populations.
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People with lived experience of incarceration have higher rates of morbidity and mortality compared to people without history of incarceration. Research conducted unethically in prisons and jails led to increased scrutiny of research to ensure the needs of those studied are protected. One consequence of increased restrictions on research with criminal-legal involved populations is reluctance to engage in research evaluations of healthcare for people who are incarcerated and people who have lived experience of incarceration. Ethical research can be done in partnership with people with lived experience of incarceration and other key stakeholders and should be encouraged. In this article, we describe how stakeholder engagement can be accomplished in this setting, and further, how such engagement leads to impactful research that can be disseminated and implemented across disciplines and communities. The goal is to build trust across the spectrum of people who work, live in, or are impacted by the criminal-legal system, with the purpose of moving toward health equity.
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This article examines the difficulties encountered in teaching professionalism to medical students in the current social and political climate where economic considerations take top priority in health care decision making. The conflict between the commitment to advocate at all times the interests of one's patients over one's own interests is discussed. With personal, institutional, tech industry, pharmaceutical industry, and third-party payer financial imperatives that stand between patients and the delivery of health care, this article investigates how medical ethics instructors are to teach professionalism in a responsible way that does not avoid dealing with the principle of justice.