RESUMO
PURPOSE OF REVIEW: While there has been a growing utilization of total pancreatectomy with islet autotransplantation (TPIAT) for patients with medically refractory chronic pancreatitis over the past few decades, there remains a lack of consensus clinical guidelines to inform the counseling and management of patients undergoing TPIAT. In this article, we review the current clinical practice and published experience of several TPIAT centers, outline key aspects in managing patients undergoing TPIAT, and discuss the glycemic outcomes of this procedure. RECENT FINDINGS: Aiming for lower inpatient glucose targets immediately after surgery (usually 100-120 mg/dl), maintaining all patients on subcutaneous insulin for at least 3 months to "rest" islets before an attempt is made to wean insulin, and close outpatient endocrinology follow-up after TPIAT particularly in the first year is common and related to better outcomes. Although TPIAT procedures and glycemic outcomes may differ across surgical centers, overall, approximately one third of patients are insulin independent at 1 year after TPIAT. Higher islet yield and lower preoperative glucose levels are among the strongest predictors of short-term post-operative insulin independence. Beyond 1 year post-operatively, the clinical management and long-term glycemic outcomes of patients after TPIAT are more variable. A multidisciplinary approach is essential in optimizing the preoperative, inpatient, and post-operative management and counseling of patients about the expected glycemic outcomes after surgery. Consensus guidelines for the clinical management of diabetes after TPIAT and harmonization of data collection protocols among TPIAT centers are needed to address the current knowledge gaps in clinical care and research and to optimize glycemic outcomes after TPIAT.
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Glicemia/análise , Transplante das Ilhotas Pancreáticas , Humanos , Insulina/uso terapêutico , Transplante das Ilhotas Pancreáticas/métodos , Pancreatectomia/efeitos adversos , Seleção de Pacientes , Qualidade de Vida , Transplante AutólogoRESUMO
DESCRIPTION: The American Diabetes Association (ADA) annually updates the Standards of Medical Care in Diabetes to provide clinicians, patients, researchers, payers, and other interested parties with evidence-based recommendations for the diagnosis and management of patients with diabetes. METHODS: For the 2017 Standards, the ADA Professional Practice Committee updated previous MEDLINE searches performed from 1 January 2016 to November 2016 to add, clarify, or revise recommendations based on new evidence. The committee rates the recommendations as A, B, or C, depending on the quality of evidence, or E for expert consensus or clinical experience. The Standards were reviewed and approved by the Executive Committee of the ADA Board of Directors, which includes health care professionals, scientists, and laypersons. Feedback from the larger clinical community informed revisions. RECOMMENDATIONS: This synopsis focuses on recommendations from the 2017 Standards about pharmacologic approaches to glycemic treatment of type 2 diabetes.
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Diabetes Mellitus Tipo 2/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Diabetes Mellitus Tipo 2/sangue , Custos de Medicamentos , Quimioterapia Combinada , Medicina Baseada em Evidências , Hemoglobinas Glicadas/análise , Humanos , Hipoglicemiantes/efeitos adversos , Hipoglicemiantes/economia , Insulina/efeitos adversos , Insulina/economia , Insulina/uso terapêutico , Metformina/efeitos adversos , Metformina/uso terapêuticoRESUMO
DESCRIPTION: The American Diabetes Association (ADA) annually updates Standards of Medical Care in Diabetes to provide clinicians, patients, researchers, payers, and other interested parties with evidence-based recommendations for the diagnosis and management of patients with diabetes. METHODS: For the 2017 Standards of Care, the ADA Professional Practice Committee did MEDLINE searches from 1 January 2016 to November 2016 to add, clarify, or revise recommendations on the basis of new evidence. The committee rated the recommendations as A, B, or C, depending on the quality of evidence, or E for expert consensus or clinical experience. The Standards of Care were reviewed and approved by the Executive Committee of the ADA Board of Directors, which includes health care professionals, scientists, and laypersons. Feedback from the larger clinical community informed revisions. RECOMMENDATION: This synopsis focuses on recommendations from the 2017 Standards of Care about monitoring and pharmacologic approaches to glycemic management for type 1 diabetes.
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Diabetes Mellitus Tipo 1/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Glicemia/análise , Automonitorização da Glicemia , Diabetes Mellitus Tipo 1/sangue , Hemoglobinas Glicadas/análise , Humanos , Hipoglicemia/induzido quimicamente , Hipoglicemia/classificação , Hipoglicemiantes/efeitos adversos , Hipoglicemiantes/farmacocinética , Insulina/efeitos adversos , Insulina/farmacocinética , Insulina/uso terapêutico , Polipeptídeo Amiloide das Ilhotas Pancreáticas/uso terapêutico , Liraglutida/uso terapêutico , Metformina/uso terapêuticoRESUMO
BACKGROUND: The republic of Trinidad and Tobago (T&T) is a middle income country with a comparatively high prevalence of diabetes mellitus (DM) compared to others in the Caribbean. To date, there have been no studies on health care professionals' (HCP) perspectives regarding the barriers to achieving optimal care of patients with DM in this country and few previous studies in the Caribbean, yet such perspectives are imperative to develop strategies that reduce the global burden of this disease. METHODS: An electronic invitation was sent to prospective HCP in T&T inviting them to attend a symposium on DM and cardiovascular disease. A total of 198 HCP participants attended of whom approximately 100 participants completed an Audience Response Survey at the completion of the conference. The Audience Response Survey included questions regarding access to resources, need for prevention and education, and coordination of care for to diabetes care in T&T. Responses were analyzed in aggregate. RESULTS: The 198 HCP participants attending the symposium included mostly nurses (40 %) and physicians (43 %). The most common specialty indicated by the 198 HCP participants was Internal and Family Medicine (28 %), followed by Anesthesiology (7 %), Emergency Medicine (6 %), Endocrinology and Diabetes (5 %) and Cardiology (3 %). Among the ~100 HCP who completed the Audience Response Survey, multiple barriers to achieving optimal care of patients with diabetes were reported such as: limited access to blood testing (75 %), ophthalmological evaluations (96 %), ECGs (69 %), and cardiac stress tests (92 %); inadequate time to screen and evaluate DM complications (95 %); poor access to consultants for referral of difficult cases (77 %); and lack of provider education regarding cardiovascular complications of DM (57 %). HCP agreed that nurses could potentially be considered to have a more active role in the care and prevention of cardiovascular disease and diabetes through leading patient education efforts (98 %), screening patients for complications (91 %), coordinating care efforts (99 %) and educating family members (98 %). CONCLUSIONS: The HCP in our study reported significant barriers to achieving optimal diabetes care in T&T. In the future, such barriers to care will need to be addressed in order to respond to the projected growth of diabetes in developing countries both within the Caribbean and globally.
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Diabetes Mellitus/terapia , Conhecimentos, Atitudes e Prática em Saúde , Pessoal de Saúde/psicologia , Acessibilidade aos Serviços de Saúde , Qualidade da Assistência à Saúde , Atitude do Pessoal de Saúde , Cardiologia , Doenças Cardiovasculares , Região do Caribe , Endocrinologia , Família , Feminino , Cardiopatias , Humanos , Masculino , Pessoa de Meia-Idade , Enfermeiras e Enfermeiros , Prevalência , Estudos Prospectivos , Encaminhamento e Consulta , Inquéritos e Questionários , Trinidad e TobagoRESUMO
BACKGROUND: Clinical guidelines for type 2 diabetes are a resource for providers to manage their patients and may help highlight specific areas in need of further education and training. We sought to determine how often guidelines are used and the relationship to physicians' diabetes-related knowledge and decision making. METHODS: Existing users of electronic clinical support tools were invited to complete an online questionnaire. A knowledge score was calculated for five questions related to prevention of diabetes and treatment of its complications. We explored the association of clinical guideline use with diabetes-related knowledge and self-reported decision making using logistic regression models, adjusted for key covariates. RESULTS: Of 383 physicians completing the questionnaire, 53% reported using diabetes guidelines routinely. Mean diabetes knowledge score for guideline users (GU) was significantly higher than non-guideline users (NGU) (3.37 ± 0.072 vs. 2.76 ± 0.084; p < 0.001). GU were significantly more likely to report a good understanding of type 2 diabetes medications (OR = 2.99, 95% CI 1.95-4.61; p < 0.001). GU were less likely to report their unfamiliarity with insulin as an important barrier to early insulin use (OR = 0.41, 0.21-0.80; p = 0.007) and with pharmacologic options as a barrier to prescribing intensive multifactorial interventions (OR = 0.32, 0.17-0.58; p < 0.001). Associations remained significant after adjusting for physician specialty, practice volume and frequency diagnosing or treating diabetes patients. CONCLUSIONS: Significant gaps exist in diabetes-related knowledge and decision making among practicing physicians, as highlighted by clinical guideline use. The development of educational and training strategies to address these needs may ultimately improve outcomes for patients with diabetes and should be investigated in the future.
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Técnicas de Apoio para a Decisão , Diabetes Mellitus Tipo 2/terapia , Educação Médica Continuada , Fidelidade a Diretrizes , Competência Clínica , Terapia Combinada , Diabetes Mellitus Tipo 2/diagnóstico , Humanos , Hipoglicemiantes/uso terapêutico , Medicina , Inquéritos e QuestionáriosRESUMO
Diabetes in the elderly is a growing public health burden. Persons with diabetes are living longer and are vulnerable to the traditional microvascular and macrovascular complications of diabetes but also at increased risk for geriatric syndromes. Peripheral vascular disease, heart disease, and stroke all have a high prevalence among older adults with diabetes. Traditional microvascular complications such as retinopathy, nephropathy, and neuropathy also frequently occur. Unique to this older population is the effect of diabetes on functional status. Older adults with diabetes are also more likely to experience geriatric syndromes such as falls, dementia, depression, and incontinence. Further studies are needed to better characterize those elderly individuals who may be at the highest risk of adverse complications from diabetes.
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Complicações do Diabetes/epidemiologia , Diabetes Mellitus/epidemiologia , Idoso , Idoso de 80 Anos ou mais , Humanos , Saúde PúblicaRESUMO
The obesity epidemic in aging populations poses significant public health concerns for greater morbidity and mortality risk. Age-related increased adiposity is multifactorial and often associated with reduced lean body mass. The criteria used to define obesity by body mass index in younger adults may not appropriately reflect age-related body composition changes. No consensus has been reached on the definition of sarcopenic obesity in older adults. Lifestyle interventions are generally recommended as initial therapy; however, these approaches have limitations in older adults. Similar benefits in older compared with younger adults are reported with pharmacotherapy, however, large randomized clinical trials in geriatric populations are lacking.
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Envelhecimento , Sarcopenia , Humanos , Idoso , Obesidade/complicações , Obesidade/epidemiologia , Obesidade/terapia , Sarcopenia/diagnóstico , Sarcopenia/epidemiologia , Sarcopenia/etiologia , Adiposidade , Composição CorporalRESUMO
OBJECTIVE: The optimal diet to improve glycemia in patients with type 2 diabetes remains unclear. Low carbohydrate, high fat (LCHF) diets can improve glycemic control, but have not been investigated in real-world settings. RESEARCH DESIGN AND METHODS: We investigated effects of the LCHF diet compared with usual care in a community-based cohort of patients with type 2 diabetes by performing a retrospective study of 49 patients who followed the LCHF diet for ≥3 months, and compared glycemic outcomes with age-matched and body mass index (BMI)-matched controls who received usual care (n=75). The primary outcome was change in A1C from baseline to the end of follow-up. RESULTS: Compared with the usual care group, the LCHF group showed a significantly greater reduction in A1C (-1.29% (95% CI -1.75 to -0.82; p<0.001)) and body weight (-12.8 kg (95% CI -14.7 to -10.8; p<0.001) at the end of follow-up after adjusting for age, sex, baseline A1C, BMI, baseline insulin dose. Of the patients initially taking insulin therapy in the LCHF group, 100% discontinued it or had a reduction in dose, compared with 23.1% in the usual care group (p<0.001). The LCHF group also had significantly greater reduction in fasting plasma glucose (-43.5 vs -8.5 mg/mL; p=0.03) compared with usual care. CONCLUSIONS: In a community-based cohort of type 2 diabetes, the LCHF diet was associated with superior A1C reduction, greater weight loss and significantly more patients discontinuing or reducing antihyperglycemic therapies suggesting that the LCHF diet may be a metabolically favorable option in the dietary management of type 2 diabetes.
Assuntos
Diabetes Mellitus Tipo 2 , Dieta Hiperlipídica , Peso Corporal , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/epidemiologia , Dieta com Restrição de Carboidratos , Controle Glicêmico , Humanos , Estudos RetrospectivosRESUMO
AIMS: To investigate the degree to which comorbid depression contributes to the relationship of diabetes with functional disability in African Americans (AAs), a population at high-risk for complications. METHODS: We examined 2989 African Americans (AAs) in the Jackson Heart Study who had diabetes and depressive symptoms (CES-D) assessed at baseline. Overall functional disability was defined as the inability to perform at least one task of daily living. Multivariable logistic regression models explored the association of diabetes and depressive symptoms with functional disability. RESULTS: Prevalence of overall functional disability was highest with both diabetes and depressive symptoms (54%), similar with diabetes alone (31%) or depressive symptoms alone (33%), and lowest with neither (15%). Adjusting for demographics, smoking, BMI, cardiovascular comorbidities, and hsCRP, the association of depressive symptoms alone (OR=2.30,95% CI 1.75-3.03) and both diabetes and depressive symptoms (OR=2.75,1.88-4.04) with overall functional disability was significant, but not for diabetes alone (OR=1.26,0.95-1.67), compared to neither. In regression analyses including any diabetes and any depressive symptoms together in models, the main effect of depressive symptoms but not diabetes was associated with overall functional disability, and the interaction term was not significant (p-value=0.84). CONCLUSIONS: Functional disability was highest among AAs who have both diabetes and depressive symptoms; the latter was a stronger contributor. Future studies should explore mechanisms underlying functional disability in diabetes, particularly the role of depression.
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Atividades Cotidianas , Efeitos Psicossociais da Doença , Transtorno Depressivo Maior/epidemiologia , Diabetes Mellitus/epidemiologia , Pessoas com Deficiência/psicologia , Adulto , Negro ou Afro-Americano , Idoso , Estudos de Coortes , Comorbidade , Estudos Transversais , Transtorno Depressivo Maior/etnologia , Diabetes Mellitus/etnologia , Diabetes Mellitus/psicologia , Feminino , Seguimentos , Disparidades nos Níveis de Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Mississippi/epidemiologia , Prevalência , Escalas de Graduação Psiquiátrica , AutorrelatoRESUMO
OBJECTIVES: Evidence suggests vitamin D deficiency is associated with developing frailty. However, cardiometabolic factors are related to both conditions and may confound and/or mediate the vitamin D-frailty association. We aimed to determine the association of vitamin D concentration with incidence of frailty, and the role of cardiometabolic diseases (cardiovascular disease, diabetes, hyperlipidemia, hypertension) in this relationship. DESIGN: Prospective longitudinal cohort study (7 visits from 1994-2008). SETTING: Baltimore, Maryland. PARTICIPANTS: Three hundred sixty-nine women from the Women's Health and Aging Study II aged 70-79 years, free of frailty at baseline. MEASUREMENTS: Serum circulating 25-hydroxyvitamin D (25[OH]D) concentration was assessed at baseline and categorized as: <10; 10-19.9; 20-29.9; and ≥30 ng/mL. Frailty incidence was determined based on presence of three or more criteria: weight loss, low physical activity, exhaustion, weakness, and slowness. Cardiometabolic diseases were ascertained at baseline. Analyses included Cox regression models adjusted for key covariates. RESULTS: Incidence rate of frailty was 32.2 per 1,000 person-years in participants with 25(OH)D < 10 ng/mL, compared to 12.9 per 1,000 person-years in those with 25(OH)D ≥ 30 ng/mL (mean follow-up = 8.5 ± 3.7 years). In cumulative incidence analyses, those with lower 25(OH)D exhibited higher frailty incidence, though differences were non-significant (P = .057). In regression models adjusted for demographics, smoking, and season, 25(OH)D < 10 ng/mL (vs ≥30 ng/mL) was associated with nearly three-times greater frailty incidence (hazard ratio (HR) = 2.77, 95% CI = 1.14, 6.71, P = .02). After adjusting for BMI, the relationship of 25(OH)D < 10 ng/mL (vs ≥30 ng/mL) with incident frailty persisted, but was attenuated after further accounting for cardiometabolic diseases (HR = 2.29, 95% CI = 0.92, 5.69, P = .07). CONCLUSION: Low serum vitamin D concentration is associated with incident frailty in older women; interestingly, the relationship is no longer significant after accounting for the presence of cardiometabolic diseases. Future studies should explore mechanisms to explain this relationship.
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Idoso Fragilizado/estatística & dados numéricos , Deficiência de Vitamina D/epidemiologia , Idoso , Doenças Cardiovasculares/epidemiologia , Estudos de Coortes , Diabetes Mellitus/epidemiologia , Feminino , Humanos , Hiperlipidemias/epidemiologia , Hipertensão/epidemiologia , Incidência , Estudos Longitudinais , Maryland/epidemiologia , Vitamina D/análogos & derivados , Vitamina D/sangueRESUMO
BACKGROUND: Hormone therapy (HT) is associated with increased risk of both venous and arterial thrombosis, which are multifactorial in origin. OBJECTIVES: Our objectives were twofold: first, we sought to examine associations between endogenous serum sex hormone levels and biomarkers of thrombosis and/or coagulation in postmenopausal hormone nonusers. Second, we separately studied the associations between serum sex hormone levels and biomarkers of thrombosis and/or coagulation in postmenopausal hormone users considering the fact that pattern of circulating hormones is different in women taking exogenous hormones. PATIENTS/METHODS: We performed a cross-sectional analysis of postmenopausal women enrolled in a large multiethnic community-based cohort study, The Multiethnic Study of Atherosclerosis. We hypothesized that higher levels of estrogen-related sex hormones would be associated with biomarkers of thrombosis, suggesting mechanisms for differences in thrombotic risk from HT. Women (n = 2878) were included if they were postmenopausal and had thrombotic biomarkers (homocysteine, fibrinogen, C-reactive protein [CRP], factor VIII, and d-dimer) and sex hormone levels (total testosterone [T], bioavailable testosterone, sex hormone binding globulin [SHBG], estradiol [E2], and dehydroepiandrosterone [DHEA]) measured. A smaller random sample of 491 women also had von Willebrand factor (vWF), plasminogen activator inhibitor (PAI-1), and tissue factor pathway inhibitor (TFPI) levels measured. RESULTS AND CONCLUSIONS: We found that elevated levels of estradiol and SHBG in HT users were associated with elevated levels of CRP and lower levels of TFPI, both of which may be related to a prothrombotic milieu in HT users. HT nonusers had far more prothrombotic associations between elevated serum sex hormone levels and thrombotic biomarkers when compared with HT users.
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Aterosclerose/tratamento farmacológico , Aterosclerose/etnologia , Desidroepiandrosterona/sangue , Estradiol/sangue , Terapia de Reposição de Estrogênios , Hormônios Esteroides Gonadais/sangue , Lipoproteínas/sangue , Globulina de Ligação a Hormônio Sexual/análise , Adulto , Idoso , Idoso de 80 Anos ou mais , Aterosclerose/sangue , Biomarcadores/sangue , Proteína C-Reativa/análise , Estudos Transversais , Feminino , Produtos de Degradação da Fibrina e do Fibrinogênio/análise , Hemostáticos , Humanos , Estudos Longitudinais , Pessoa de Meia-Idade , Pós-Menopausa , Estados Unidos/epidemiologiaRESUMO
AIMS: The presence of diabetes is associated with increased odds of difficulties in functional tasks but it remains unclear if the burden is similar by race. METHODS: Our study included 122,004 non-Hispanic Black (NHB) and non-Hispanic White (NHW) adults ≥50 years from the U.S. National Health Interview Survey (2001-2012). Diabetes was defined as self-reported diagnosis or medication use. Functional limitations were defined as any self-reported difficulty in performing mobility tasks, general physical activities (GPA), or leisure and social activities (LSA). Logistic regression models were created to investigate the relationship of race with functional limitations accounting for key covariates, among men and women, by diabetes status. RESULTS: Among older U.S. adults, NHB versus NHW women without diabetes had a higher odds of limitations in mobility (OR=1.39, 1.30-1.49) and LSA (OR=1.13, 1.05-1.23) without diabetes but a similar odds of these limitations with diabetes by race, after adjusting for age, income, education, obesity, arthritis, heart disease, stroke, COPD, and cancer. Interestingly, NHB versus NHW women had significantly lower odds of GPA, irrespective of diabetes status. However, NHB versus NHW men with diabetes had a persistently higher odds for mobility and LSA limitations with diabetes as follows: mobility (OR=1.30, 1.12-1.51) and LSA limitations (OR=1.07, 1.06-1.34). The interaction of race and diabetes was significant among women for mobility limitations (p<0.01), but not men. CONCLUSIONS: The burden of functional limitations differs by race among both men and women with diabetes. Future studies should examine mechanisms underlying these differences to prevent progression to disability in older adults with diabetes.
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Atividades Cotidianas , Diabetes Mellitus/etnologia , Avaliação da Deficiência , Etnicidade , Atividade Motora/fisiologia , Transtornos Motores/etnologia , Grupos Raciais , Idoso , Comorbidade , Estudos Transversais , Diabetes Mellitus/fisiopatologia , Diabetes Mellitus/reabilitação , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Transtornos Motores/etiologia , Transtornos Motores/fisiopatologia , Prevalência , Inquéritos e Questionários , Estados Unidos/epidemiologiaRESUMO
OBJECTIVE: Persons with diabetes have accelerated muscle loss compared with their counterparts. The relationship of hyperglycemia per se to declines in muscle function has not been explored yet has implications for developing appropriate intervention strategies to prevent muscle loss. RESEARCH DESIGN AND METHODS: We examined 984 participants aged 25-96 years in the Baltimore Longitudinal Study of Aging (2003-2011) with HbA1c, knee extensor strength (isokinetic dynamometer), and lean body mass (DEXA) measured at baseline. Participants had repeated measurements up to 7.5 years later. Muscle quality was defined as knee extensor strength/leg lean mass. Participants were categorized by HbA1c quartile (<5.5, 5.5-5.79, 5.8-6.09, and ≥6.1% or <37, 37-40, 40-43, and ≥43 mmol/mol). Mixed-effects regression models were used to examine the regression of muscle outcomes on HbA1c. RESULTS: Muscle strength and quality were significantly lower across HbA1c quartiles (both P < 0.001), without differences in muscle mass at baseline. Comparing highest versus lowest HbA1c quartiles and adjusting for age, race, sex, weight, and height, strength was significantly lower (-4.70 ± 2.30 N · m; P value trend = 0.02) and results were unchanged after adjustment for physical activity (P value trend = 0.045) but of borderline significance after additional adjustment for peripheral neuropathy (P value trend = 0.05). Adjusting for demographics, muscle quality was significantly lower (-0.32 ± 0.15 N · m/kg; P value trend = 0.02) in the highest versus lowest HbA1c quartiles, but differences were attenuated after adjusting for weight and height (-0.25 ± 0.15 N · m/kg; P value trend = 0.07). Muscle mass measures were similar across HbA1c quartiles. CONCLUSIONS: Hyperglycemia is associated with persistently lower muscle strength with aging, but this effect may be mediated, at least in part, by peripheral neuropathy. Future studies should explore if better glycemic control can preserve muscle function in diabetes.
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Envelhecimento , Hiperglicemia/fisiopatologia , Força Muscular , Músculo Esquelético/fisiopatologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Composição Corporal , Índice de Massa Corporal , Peso Corporal , Feminino , Seguimentos , Hemoglobinas Glicadas/metabolismo , Humanos , Joelho , Estudos Longitudinais , Masculino , Pessoa de Meia-IdadeRESUMO
OBJECTIVE: Persons with diabetes have accelerated muscle loss. The association of fasting and postchallenge glucose levels per se to grip strength, a clinical marker of poor physical function, and potential sex differences in this relationship has not been previously described. DESIGN: Longitudinal cohort. SETTING: USA. PARTICIPANTS: Participants were community-dwelling older adults (mean age 71.3â years) without self-reported diabetes and/or use of diabetes medication with glucose measured at baseline (1992-1996). MEASUREMENTS: Fasting plasma glucose (FPG) was measured in 1019 women and 636 men. Two-hour glucose (2HG) levels after a 75â g oral glucose tolerance test were also available (women, n=870; men, n=559). Dominant hand grip strength was assessed using a hand-held dynamometer at 3.0±1.6 visits over a median 7.0â years. Mixed linear models examined the association of baseline glucose levels with grip strength, accounting for repeated visits, and adjusting for covariates. RESULTS: Sex-specific FPG quartiles were associated with unadjusted differences in grip strength among women (p=0.03) but not men (p=0.50). However, in men, adjusting for age, education, height, weight, peripheral neuropathy, physical activity, and comorbidities, each SD (SD=17â mg/dL) higher FPG was associated with persistently lower grip strength (-0.44±0.22â kg, p=0.049); 2HG (SD=50â mg/dL) was unrelated to grip strength (-0.39±0.25â kg, p=0.13). In women, neither FPG (SD=16â mg/dL) nor 2HG (SD=45â mg/dL) was associated with grip strength (0.02±0.12â kg, p=0.90; and -0.20±0.14â kg, p=0.14; respectively) after adjustment. The rate of change in grip strength did not differ across FPG or 2HG quartiles in either sex. CONCLUSIONS: In age-adjusted analyses, elevated fasting glucose levels are associated with persistently lower grip strength in older men, but not women. Future studies are needed to elucidate reasons for these sex differences and may provide further insight into accelerated loss of muscle function as a complication of diabetes in older adults.
RESUMO
BACKGROUND: National data suggest that women are overall less likely than men to attain independent research funding. However, it remains unclear whether such sex differences are also observed in academic institutions that have integrated diversity in the workplace as a priority. METHODS: During 1999-2008, all National Institutes of Health (NIH) Career Development (K01, K08, or K23) awardees in the Department of Medicine at Johns Hopkins University School of Medicine were identified to investigate differences in the attainment of independent funding by sex, including NIH Research Project Grant (R01) or equivalent awards, (U01, P01, P50), and any R award (also R03, R21, R34) through 2012. RESULTS: A similar number of men (n = 49) and women (n = 43) received a K award. There were no significant sex differences in attaining an R01/equivalent award or any R award. The median time to attaining the first R01/equivalent award was similar for men and women (5.6 vs. 5.3 years, p = 0.93). The actuarial rate of R01/equivalent award attainment at 10 years was 64% overall (56% among men vs. 74% among women; log-rank p = 0.41). For any R award, the rate was 72% overall (70% among men vs. 76% among women; log-rank p = 0.63). In Cox proportional hazards models, adjusting for race/ethnicity, age, Doctor of Medicine (MD) degree, and funding period, sex was not an independent predictor of R01/equivalent or any R award attainment. Interestingly, black race and/or Hispanic ethnicity significantly predicted any R award attainment (adjusted hazard ratio [HR] = 2.34, 95% confidence interval [CI] 1.02-5.37). CONCLUSIONS: No sex differences were found in the attainment of independent funding by K awardees in our study. Future studies to investigate the impact of specific diversity initiatives on subsequent success in attaining independent research funding are needed.
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Distinções e Prêmios , Pesquisa Biomédica , Mobilidade Ocupacional , Médicos , Apoio à Pesquisa como Assunto/estatística & dados numéricos , Pesquisa Biomédica/economia , Feminino , Humanos , Masculino , Preconceito , Modelos de Riscos Proporcionais , Fatores Sexuais , Estados Unidos , Universidades , Recursos HumanosRESUMO
The term sarcopenia refers to the loss of muscle mass that occurs with ageing. On the basis of study results showing that muscle mass is only moderately related to functional outcomes, international working groups have proposed that loss of muscle strength or physical function should also be included in the definition. Irrespective of how sarcopenia is defined, both low muscle mass and poor muscle strength are clearly highly prevalent and important risk factors for disability and potentially mortality in individuals as they age. Many chronic diseases, in addition to ageing, could also accelerate decrease of muscle mass and strength, and this effect could be a main underlying mechanism by which chronic diseases cause physical disability. In this Review, we address both age-related and disease-related muscle loss, with a focus on diabetes and obesity but including other disease states, and potential common mechanisms and treatments. Development of treatments for age-related and disease-related muscle loss might improve active life expectancy in older people, and lead to substantial health-care savings and improved quality of life.
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Complicações do Diabetes , Obesidade/complicações , Sarcopenia/complicações , Doenças do Sistema Endócrino/complicações , Humanos , MasculinoRESUMO
OBJECTIVE: Controversy exists about the coronary artery disease (CAD) risk conveyed by diabetes in young and middle-aged women. We investigated sex differences in CAD by diabetes status among healthy individuals with different underlying risks of heart disease. RESEARCH DESIGN AND METHODS: We examined subjects aged <60 years without CAD at enrollment in the high-risk GeneSTAR Study (n = 1,448; follow-up â¼12 years), Multi-Ethnic Study of Atherosclerosis (MESA; n = 3,072; follow-up â¼7 years), and National Health and Nutrition Examination Survey III (NHANES III) Mortality Follow-up Study (n = 6,997; follow-up â¼15 years). Diabetes was defined by report, hypoglycemic use, and/or fasting glucose ≥126 mg/dL. The outcome was any CAD event during follow-up (fatal CAD in NHANES). RESULTS: In the absence of diabetes, CAD rates were lower among women in GeneSTAR, MESA, and NHANES (4.27, 1.66, and 0.40/1,000 person-years, respectively) versus men (11.22, 5.64, and 0.88/1,000 person-years); log-rank P < 0.001 (GeneSTAR/MESA) and P = 0.07 (NHANES). In the presence of diabetes, CAD event rates were similar among women (17.65, 7.34, and 2.37/1,000 person-years) versus men (12.86, 9.71, and 1.83/1,000 person-years); all log-rank P values > 0.05. Adjusting for demographics, diabetes was associated with a significant four- to fivefold higher CAD rate among women in each cohort, without differences in men. In meta-analyses of three cohorts, additionally adjusted for BMI, smoking, hypertension, HDL, and non-HDL cholesterol, antihypertensive and cholesterol-lowering medication use, the hazard ratio of CAD in men versus women among nondiabetes was 2.43 (1.76-3.35) and diabetes was 0.89 (0.43-1.83); P = 0.013 interaction by diabetes status. CONCLUSIONS: Though young and middle-aged women are less likely to develop CAD in the absence of diabetes, the presence of diabetes equalizes the risk by sex. Our findings support aggressive CAD prevention strategies in women with diabetes and at similar levels to those that exist in men.
Assuntos
Doença da Artéria Coronariana/epidemiologia , Diabetes Mellitus Tipo 2/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/tratamento farmacológico , Feminino , Seguimentos , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Inquéritos Nutricionais , Fatores de Risco , Fatores Sexuais , Adulto JovemRESUMO
Diabetes and impaired glucose tolerance affect a substantial proportion of older adults. Abnormal glucose metabolism is not a necessary component of aging. Older adults with diabetes and altered glucose status likely represent a subset of the population at high risk for complications and adverse geriatric syndromes. Goals for treatment of diabetes in the elderly include control of hyperglycemia, prevention and treatment of diabetic complications, avoidance of hypoglycemia, and preservation of quality of life. Research exploring associations of dysglycemia and insulin resistance with the development of adverse outcomes in the elderly may ultimately inform use of future glucose-lowering therapies in this population.
Assuntos
Envelhecimento , Diabetes Mellitus Tipo 2/epidemiologia , Transtornos do Metabolismo de Glucose/epidemiologia , Resistência à Insulina , Células Secretoras de Insulina/metabolismo , Animais , Complicações do Diabetes/prevenção & controle , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/metabolismo , Diabetes Mellitus Tipo 2/terapia , Transtornos do Metabolismo de Glucose/sangue , Transtornos do Metabolismo de Glucose/metabolismo , Transtornos do Metabolismo de Glucose/terapia , Humanos , Insulina/sangue , Insulina/metabolismo , Secreção de Insulina , Medicina de PrecisãoRESUMO
OBJECTIVES: To examine the independent association between diabetes mellitus (and its duration and severity) and quadriceps strength, quadriceps power, and gait speed in a national population of older adults. DESIGN: Cross-sectional nationally representative survey. SETTING: United States. PARTICIPANTS: Two thousand five hundred seventy-three adults aged 50 and older in the National Health and Nutrition Examination Survey 1999-2002 who had assessment of quadriceps strength. METHODS: Diabetes mellitus was ascertained according to questionnaire. Measurement of isokinetic knee extensor (quadriceps) strength was performed at 60º/s. Gait speed was assessed using a 20-foot walk test. Multiple linear regression analyses were used to assess the association between diabetes mellitus status and outcomes, adjusting for potential confounders or mediators. RESULTS: Older U.S. adults with diabetes mellitus had significantly slower gait speed (0.96 ± 0.02 m/s) than those without (1.08 ± 0.01 m/s; P < .001). After adjusting for demographic characteristics, weight, and height, diabetes mellitus was also associated with significantly lower quadriceps strength (-4.6 ± 1.9 Nm; P = .02) and power (-4.9 ± 2.0 W; P = .02) and slower gait speed (-0.05 ± 0.02 m/s; P = .002). Associations remained significant after adjusting for physical activity and C-reactive protein. After accounting for comorbidities (cardiovascular disease, peripheral neuropathy, amputation, cancer, arthritis, fracture, chronic obstructive pulmonary disease), diabetes mellitus was independently associated only with gait speed (-0.04 ± 0.02 m/s; P = .02). Diabetes mellitus duration in men and women was negatively associated with age-adjusted quadriceps strength (-5.7 and -3.5 Nm/decade of diabetes mellitus, respectively) and power (-6.1 and -3.8 W/decade of diabetes mellitus, respectively) (all P ≤ .001, no significant interactions according to sex). Glycosylated hemoglobin was not associated with outcomes after accounting for body weight. CONCLUSION: Older U.S. adults with diabetes mellitus have lower quadriceps strength and quadriceps power that is related to the presence of comorbidities and walk slower than those without diabetes mellitus. Future studies should investigate the relationship between hyperglycemia and subsequent declines in leg muscle function.