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1.
Diabetes Res Clin Pract ; 176: 108851, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33957142

RESUMO

Patients with diabetes have an increased risk of developing heart failure and those with heart failure are at higher risk of developing diabetes. In patients with diabetes antidiabetic medications and the metabolic alterations of diabetes increase the risk of developing heart failure. In diabetic patients with heart failure and in those with an increased likelihood of developing the disease a stepwise approach based on the use of natriuretic peptides and echocardiography to rule out the presence of heart failure should be used. Once the diagnosis of heart failure is established it will be important to define the phenotype according to the left ventricular function and, where appropriate, use additional tests to identify possible additional underlying causes of heart failure like coronary artery disease. A multidisciplinary heart failure management programs is recommended in all patients with diabetes mellitus and heart failure to enable appropriate investigations, accurate diagnosis, and appropriate agreed evidence-based therapy and care plan. The implementation of a multidisciplinary heart failure management program requires a multidisciplinary team that will have to follow the patients throughout the whole heart failure trajectory and that should consider a holistic approach to the diabetic patient with heart failure rather than focussing merely on either heart failure or diabetes.


Assuntos
Algoritmos , Cardiologistas , Angiopatias Diabéticas/diagnóstico , Insuficiência Cardíaca/diagnóstico , Papel do Médico , Angiopatias Diabéticas/tratamento farmacológico , Angiopatias Diabéticas/fisiopatologia , Técnicas de Diagnóstico Cardiovascular , Técnicas de Diagnóstico Endócrino , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/etiologia , Insuficiência Cardíaca/fisiopatologia , Humanos , Hipoglicemiantes/uso terapêutico , Equipe de Assistência ao Paciente , Prognóstico , Função Ventricular Esquerda/fisiologia
2.
Angiology ; 71(10): 876-885, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32638622

RESUMO

Vascular complications in patients with diabetes mellitus (DM) are common. Since impaired oxygen balance in plasma plays an important role in the pathogenesis of chronic DM-associated complications, the administration of hyperbaric oxygen therapy (HBOT) has been recommended to influence development of vascular complications. Hyperbaric oxygen therapy involves inhalation of 100% oxygen under elevated pressure from 1.6 to 2.8 absolute atmospheres in hyperbaric chambers. Hyperbaric oxygen therapy increases plasma oxygen solubility, contributing to better oxygen diffusion to distant tissues and preservation of the viability of tissues reversibly damaged by atherosclerosis-induced ischemia, along with microcirculation restoration. Hyperbaric oxygen therapy exerts antiatherogenic, antioxidant, and cardioprotective effects by altering the level and composition of plasma fatty acids and also by promoting signal transduction through membranes, which are impaired by hyperglycemia and hypoxia. In addition, HBOT affects molecules involved in the regulation of nitric oxide synthesis and in that way exerts anti-inflammatory and angiogenic effects in patients with DM. In this review, we explore the recent literature related to the effects of HBOT on DM-related vascular complications.


Assuntos
Angiopatias Diabéticas/diagnóstico , Angiopatias Diabéticas/terapia , Oxigenoterapia Hiperbárica , Animais , Angiopatias Diabéticas/etiologia , Modelos Animais de Doenças , Humanos
3.
Obes Surg ; 29(12): 3907-3911, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31372874

RESUMO

BACKGROUND: Obesity surgery has pronounced effects on metabolic profile of patients with type 2 diabetes mellitus (T2DM); however, reports on long-term remission rates based on the standardised and holistic criteria by the International Diabetes Federation (IDF) and effects on T2DM microvascular complications are scarce in the literature. In this retrospective clinical trial, our objectives were to assess these variables 5 years after surgery. METHODS: Clinical data and direct measurements of renal and retinal damage were collected prospectively and analysed retrospectively for 82 patients with T2DM who underwent obesity surgery and were followed up for 5 years. RESULTS: The cohort of 82 patients with T2DM that were followed up 5 years after obesity surgery was predominantly female (71%) with a median age of 51 years, weight of 133.5 kg, BMI of 46.8 kg/m2 and pre-operative duration of T2DM of 8 years; 6% of patients had diet-controlled T2DM, 57% were on non-insulin treatment and 37% were on insulin treatment pre-operatively. Of the total 82 patients, 59 patients underwent Roux-en-Y gastric bypass, 15 sleeve gastrectomy and 8 patients underwent gastric band operations. At 5 years, 5% and 15% patients achieved optimisation and improvement of the metabolic state based on the IDF criteria respectively. Surgery was associated with almost halving of the albumin-creatinine ratio in 22 patients with pre-existing albuminuria (follow-up data available for 64 patients) and an overall stabilisation of retinopathy in 24 patients with retinal images available at 5 years. CONCLUSION: Whilst the findings on microvascular complications are encouraging, the rates of metabolic remission were lower than expected and raise the need for validated protocols to assist clinicians in managing these patients more aggressively post-operatively to achieve optimum cardio-metabolic risk factor control and hopefully further reduction in microvascular and macrovascular complications.


Assuntos
Albuminúria/etiologia , Cirurgia Bariátrica , Diabetes Mellitus Tipo 2/cirurgia , Angiopatias Diabéticas/etiologia , Obesidade Mórbida/cirurgia , Complicações Pós-Operatórias , Adulto , Idoso , Albuminúria/diagnóstico , Albuminúria/epidemiologia , Albuminúria/metabolismo , Cirurgia Bariátrica/métodos , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/epidemiologia , Diabetes Mellitus Tipo 2/metabolismo , Angiopatias Diabéticas/diagnóstico , Angiopatias Diabéticas/epidemiologia , Angiopatias Diabéticas/metabolismo , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade Mórbida/complicações , Obesidade Mórbida/metabolismo , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/metabolismo , Estudos Retrospectivos , Resultado do Tratamento , Redução de Peso
4.
Ann Vasc Surg ; 61: 83-90, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31382005

RESUMO

OBJECTIVE: To determine whether functional electrical stimulation (FES) is able to improve ischemic pain and quality of life of patients with diabetic arteriopathy (DA) in grade-IIa Leriche-Le Fontaine. MATERIAL AND METHODS: This is a single-blinded, randomized, prospective cohort study. We included patients diagnosed with grade-IIa Leriche-Le Fontaine peripheral arterial disease in both lower extremities with and without diabetes mellitus (DM). The ankle-brachial index was 0.4-0.9. Patients were randomized into two experimental groups: nondiabetic (non-DM) (n = 71) and diabetic (DM) (n = 71). The patients received FES while walking for 1 hr on a supervised treadmill. Three months of follow-up were conducted after treatment. RESULTS: A total of 168 patients were randomized; 142 completed the study, with 71 in each group. Both groups reported an improvement after the treatment, but the improvement was statistically significant in the DM group, in which all the parameters studied improved. Greater benefits were observed in all the parameters in the DM group after the follow-up, except for the test of the meters walked in 6 min. CONCLUSIONS: The use of FES during daily walking is effective in patients with DA, reducing intermittent claudication and improving the quality of life of these patients.


Assuntos
Angiopatias Diabéticas/terapia , Terapia por Estimulação Elétrica , Terapia por Exercício , Tolerância ao Exercício , Claudicação Intermitente/terapia , Isquemia/terapia , Doença Arterial Periférica/terapia , Idoso , Terapia Combinada , Angiopatias Diabéticas/diagnóstico , Angiopatias Diabéticas/fisiopatologia , Método Duplo-Cego , Terapia por Estimulação Elétrica/efeitos adversos , Terapia por Exercício/efeitos adversos , Feminino , Humanos , Claudicação Intermitente/diagnóstico , Claudicação Intermitente/fisiopatologia , Isquemia/diagnóstico , Isquemia/fisiopatologia , Masculino , Pessoa de Meia-Idade , Doença Arterial Periférica/diagnóstico , Doença Arterial Periférica/fisiopatologia , Estudos Prospectivos , Qualidade de Vida , Recuperação de Função Fisiológica , Espanha , Fatores de Tempo , Resultado do Tratamento , Caminhada
5.
BMC Cardiovasc Disord ; 19(1): 145, 2019 06 17.
Artigo em Inglês | MEDLINE | ID: mdl-31208330

RESUMO

BACKGROUND: The relationship between vitamin D levels and peripheral arterial disease (PAD) remains unclear. We assessed the association of serum 25-hydroxyvitamin D (25(OH)D) levels with the prevalence of PAD in patients with type 2 diabetes mellitus(T2DM). METHODS: A total of 1018 T2DM patients participated in this cross-sectional study. Serum 25(OH)D levels were measured and risk factors of PAD were recorded. PAD was diagnosed as an ankle-brachial index (ABI) < 0.9. RESULTS: The mean age of the diabetic patients was 58.59 ± 11.34 years. Of all the patients, only 20.1% had a 25(OH)D level ≥ 20 ng/mL. Compared to patients without PAD, serum 25(OH)D levels were significantly lower in those with PAD (14.81 ± 8.43 vs. 11.55 ± 5.65 ng/mL, P < 0.001). The overall prevalence of PAD was 7.7%. From the highest level (≥ 20 ng/mL) to the lowest level (< 10 ng/mL) of serum 25(OH)D, the prevalence of PAD was 2.8, 7.5 and 10.7% respectively. After adjustment for age, sex, body mass index (BMI), smoking status and season, compared to patients with serum 25(OH)D levels ≥20 ng/mL, the odds ratios of PAD in patients with a level of 10 to < 20 ng/mL and < 10 ng/mL was 3.587(95% CI: 1.314-9.790) and 5.540(95% CI: 2.004-15.320), respectively. When further considering the influence of coronary heart disease (CHD), hypertension and cerebral infarction, the ratios changed to 3.824(95% CI: 1.378-10.615) and 5.729(95% CI: 2.028-16.187), respectively. And after further adjustment for the duration of diabetes, glycated hemoglobin (HbA1c) and glomerular filtration rate (GFR), the ratios changed to 3.489(95% CI: 1.100-11.062) and 3.872(95% CI: 1.168-12.841), respectively. CONCLUSIONS: Reduced serum vitamin D levels were associated with an increased risk of PAD in T2DM patients. Randomized interventive clinical studies are required to verify the effects of vitamin D supplementation on PAD.


Assuntos
Diabetes Mellitus Tipo 2/epidemiologia , Angiopatias Diabéticas/epidemiologia , Doença Arterial Periférica/epidemiologia , Deficiência de Vitamina D/epidemiologia , Idoso , Biomarcadores/sangue , Glicemia/metabolismo , China/epidemiologia , Estudos Transversais , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/diagnóstico , Angiopatias Diabéticas/sangue , Angiopatias Diabéticas/diagnóstico , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Masculino , Pessoa de Meia-Idade , Doença Arterial Periférica/sangue , Doença Arterial Periférica/diagnóstico , Prevalência , Medição de Risco , Fatores de Risco , Vitamina D/análogos & derivados , Vitamina D/sangue , Deficiência de Vitamina D/sangue , Deficiência de Vitamina D/diagnóstico
6.
Cardiovasc Diabetol ; 18(1): 35, 2019 03 18.
Artigo em Inglês | MEDLINE | ID: mdl-30885203

RESUMO

BACKGROUND: This pathophysiological study addressed the hypothesis that soluble epoxide hydrolase (sEH), which metabolizes the vasodilator and anti-inflammatory epoxyeicosatrienoic acids (EETs) to dihydroxyeicosatrienoic acids (DHETs), contributes to conduit artery endothelial dysfunction in type 2 diabetes. METHODS AND RESULTS: Radial artery endothelium-dependent flow-mediated dilatation in response to hand skin heating was reduced in essential hypertensive patients (n = 9) and type 2 diabetic subjects with (n = 19) or without hypertension (n = 10) compared to healthy subjects (n = 36), taking into consideration cardiovascular risk factors, flow stimulus and endothelium-independent dilatation to glyceryl trinitrate. Diabetic patients but not non-diabetic hypertensive subjects displayed elevated whole blood reactive oxygen species levels and loss of NO release during heating, assessed by measuring local plasma nitrite variation. Moreover, plasma levels of EET regioisomers increased during heating in healthy subjects, did not change in hypertensive patients and decreased in diabetic patients. Correlation analysis showed in the overall population that the less NO and EETs bioavailability increases during heating, the more flow-mediated dilatation is reduced. The expression and activity of sEH, measured in isolated peripheral blood mononuclear cells, was elevated in diabetic but not hypertensive patients, leading to increased EETs conversion to DHETs. Finally, hyperglycemic and hyperinsulinemic euglycemic clamps induced a decrease in flow-mediated dilatation in healthy subjects and this was associated with an altered EETs release during heating. CONCLUSIONS: These results demonstrate that an increased EETs degradation by sEH and altered NO bioavailability are associated with conduit artery endothelial dysfunction in type 2 diabetic patients independently from their hypertensive status. The hyperinsulinemic and hyperglycemic state in these patients may contribute to these alterations. Trial registration NCT02311075. Registered December 8, 2014.


Assuntos
Diabetes Mellitus Tipo 2/sangue , Angiopatias Diabéticas/sangue , Eicosanoides/sangue , Hipertensão Essencial/sangue , Artéria Radial/metabolismo , Vasodilatação , Idoso , Biomarcadores/sangue , Estudos de Casos e Controles , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/fisiopatologia , Angiopatias Diabéticas/diagnóstico , Angiopatias Diabéticas/fisiopatologia , Epóxido Hidrolases/metabolismo , Hipertensão Essencial/diagnóstico , Hipertensão Essencial/fisiopatologia , Feminino , Humanos , Hipertermia Induzida , Masculino , Pessoa de Meia-Idade , Óxido Nítrico/metabolismo , Nitritos/sangue , Nitroglicerina/administração & dosagem , Artéria Radial/efeitos dos fármacos , Artéria Radial/fisiopatologia , Vasodilatação/efeitos dos fármacos , Vasodilatadores/administração & dosagem
7.
Cardiovasc Diabetol ; 17(1): 138, 2018 10 23.
Artigo em Inglês | MEDLINE | ID: mdl-30352589

RESUMO

Lower-extremity arterial disease (LEAD) is a major endemic disease with an alarming increased prevalence worldwide. It is a common and severe condition with excess risk of major cardiovascular events and death. It also leads to a high rate of lower-limb adverse events and non-traumatic amputation. The American Diabetes Association recommends a widespread medical history and clinical examination to screen for LEAD. The ankle brachial index (ABI) is the first non-invasive tool recommended to diagnose LEAD although its variable performance in patients with diabetes. The performance of ABI is particularly affected by the presence of peripheral neuropathy, medial arterial calcification, and incompressible arteries. There is no strong evidence today to support an alternative test for LEAD diagnosis in these conditions. The management of LEAD requires a strict control of cardiovascular risk factors including diabetes, hypertension, and dyslipidaemia. The benefit of intensive versus standard glucose control on the risk of LEAD has not been clearly established. Antihypertensive, lipid-lowering, and antiplatelet agents are obviously worthfull to reduce major cardiovascular adverse events, but few randomised controlled trials (RCTs) have evaluated the benefits of these treatments in terms of LEAD and its related adverse events. Smoking cessation, physical activity, supervised walking rehabilitation and healthy diet are also crucial in LEAD management. Several advances have been achieved in endovascular and surgical revascularization procedures, with obvious improvement in LEAD management. The revascularization strategy should take into account several factors including anatomical localizations of lesions, medical history of each patients and operator experience. Further studies, especially RCTs, are needed to evaluate the interest of different therapeutic strategies on the occurrence and progression of LEAD and its related adverse events in patients with diabetes.


Assuntos
Angiopatias Diabéticas/terapia , Extremidade Inferior/irrigação sanguínea , Doença Arterial Periférica/terapia , Índice Tornozelo-Braço , Comorbidade , Angiopatias Diabéticas/diagnóstico , Angiopatias Diabéticas/epidemiologia , Angiopatias Diabéticas/fisiopatologia , Humanos , Doença Arterial Periférica/diagnóstico , Doença Arterial Periférica/epidemiologia , Doença Arterial Periférica/fisiopatologia , Valor Preditivo dos Testes , Fatores de Risco , Resultado do Tratamento
8.
Eur J Prev Cardiol ; 25(14): 1502-1519, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-29799294

RESUMO

Introduction and background Haptoglobin (Hp) is considered to be an antioxidant and protective against cardiovascular complications. Polymorphisms in the Hp gene interact with diabetes mellitus to affect the risk of vascular complications. Methods We review the updated literature about the protean role of Hp and Hp genotypes spanning genomics, molecular, translational and clinical studies. We searched Pubmed, SCOPUS and Google Scholar for all articles using the keywords: haptoglobin and/or haptoglobin polymorphism and diabetes. We review the diverse Hp genotypes, phenotypes and the impact on diabetes complications, including lessons from animal models and in vitro models. We describe the clinical studies on the associations of Hp genotypes with vascular complications in type 1 and type 2 diabetes comprehensively. We review the studies looking at vitamin E supplementation in a personalized manner in Hp2-2 diabetes individuals. Results and conclusion Hp genotypes have evolved as a result of deletions in the traditional Hp genes. The Hp genotypes have been associated with microvascular and macrovascular complications in type 1 diabetes mellitus but the association in type 2 diabetes is more consistent with cardiovascular complications. A preferential benefit of vitamin E and other antioxidants in the Hp2-2 genotype for cardiovascular complications in type 2 diabetes has been seen presumably secondary to interaction with high-density lipoprotein function. Hence, the Hp genotype can be used to personalize antioxidant therapeutics in diabetes patients. These results need to be corroborated in large, global, pragmatic, prospective, cardiovascular outcome trials in type 2 diabetes patients.


Assuntos
Diabetes Mellitus Tipo 1/genética , Diabetes Mellitus Tipo 2/genética , Angiopatias Diabéticas/genética , Haptoglobinas/genética , Estresse Oxidativo/genética , Polimorfismo Genético , Animais , Antioxidantes/administração & dosagem , Tomada de Decisão Clínica , Diabetes Mellitus Tipo 1/diagnóstico , Diabetes Mellitus Tipo 1/tratamento farmacológico , Diabetes Mellitus Tipo 1/metabolismo , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/metabolismo , Angiopatias Diabéticas/diagnóstico , Angiopatias Diabéticas/metabolismo , Angiopatias Diabéticas/prevenção & controle , Suplementos Nutricionais , Estudos de Associação Genética , Predisposição Genética para Doença , Humanos , Estresse Oxidativo/efeitos dos fármacos , Fenótipo , Medicina de Precisão , Prognóstico , Fatores de Risco , Vitamina E/administração & dosagem
9.
Microvasc Res ; 115: 1-7, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-28751169

RESUMO

This study performed laser-Doppler flowmetry (LDF) measurements with the aim of identifying differences in diabetes-induced microcirculatory-blood-flow (MBF) responses between the following skin surface measurement sites: an acupoint around the wrist, an acupoint around the ankle, and a nearby nonacupoint around the ankle. The 67 study subjects were assigned to diabetic, prediabetic, and healthy groups according to the results of oral glucose tolerance tests. Beat-to-beat and spectral analyses were applied to the LDF waveform to obtain the foot delay time (FDT), the flow rise time (FRT), and the relative energy contributions (RECs) in five frequency bands. FRT and FDT were significantly shorter and the RECs of the endothelial-, neural-, and myogenic-related frequency bands were significantly smaller in the diabetic group than in the control group at the acupoint around the ankle, but there were no such prominent differences at the other sites. The acupoint around the ankle was better than the nearby nonacupoint and the acupoint around the wrist for distinguishing the age-matched diabetic, prediabetic, and healthy subjects. These findings imply that when monitoring diabetes-induced MBF responses, the measurement locations should be chosen carefully in order to minimize interference effects and to improve the ability to distinguish subjects with different conditions.


Assuntos
Diabetes Mellitus/fisiopatologia , Angiopatias Diabéticas/fisiopatologia , Fluxometria por Laser-Doppler , Microcirculação , Estado Pré-Diabético/fisiopatologia , Pele/irrigação sanguínea , Pontos de Acupuntura , Adulto , Tornozelo , Velocidade do Fluxo Sanguíneo , Estudos de Casos e Controles , Diabetes Mellitus/diagnóstico , Angiopatias Diabéticas/diagnóstico , Feminino , Teste de Tolerância a Glucose , Humanos , Masculino , Pessoa de Meia-Idade , Estado Pré-Diabético/diagnóstico , Fluxo Sanguíneo Regional , Fatores de Tempo , Punho
10.
Nutrients ; 8(12)2016 Dec 17.
Artigo em Inglês | MEDLINE | ID: mdl-27999319

RESUMO

Physical activity and the ingestion of dietary fiber are non-drug alternatives commonly used as adjuvants to glycemic control in diabetic individuals. Among these fibers, we can highlight beta-glucans. However, few studies have compared isolated and synergic effects of physical exercise and beta-glucan ingestion, especially in type 2 diabetic rats. Therefore, we evaluated the effects beta-glucan (Saccharomyces cerevisiae) consumption, associated or not to exercise, on metabolic parameters of diabetic Wistar rats. The diabetes mellitus (DM) was induced by high-fat diet (HFD) associated with a low dose of streptozotocin (STZ-35 mg/kg). Trained groups were submitted to eight weeks of exercise in aquatic environment. In the last 28 days of experiment, animals received 30 mg/kg/day of beta-glucan by gavage. Isolated use of beta-glucan decreased glucose levels in fasting, Glycated hemoglobin (HbA1c), triglycerides (TAG), total cholesterol (TC), low-density lipoprotein (LDL-C), the atherogenic index of plasma. Exercise alone also decreased blood glucose levels, HbA1c, and renal lesions. An additive effect for reducing the atherogenic index of plasma and renal lesions was observed when both treatments were combined. It was concluded that both beta-glucan and exercise improved metabolic parameters in type 2 (HFD/STZ) diabetic rats.


Assuntos
Aterosclerose/prevenção & controle , Diabetes Mellitus Experimental/terapia , Diabetes Mellitus Tipo 2/terapia , Angiopatias Diabéticas/prevenção & controle , Fibras na Dieta/administração & dosagem , Suplementos Nutricionais , Terapia por Exercício , Saccharomyces cerevisiae/metabolismo , beta-Glucanas/administração & dosagem , Animais , Aterosclerose/sangue , Aterosclerose/diagnóstico , Aterosclerose/etiologia , Biomarcadores/sangue , Glicemia/metabolismo , Terapia Combinada , Diabetes Mellitus Experimental/sangue , Diabetes Mellitus Experimental/induzido quimicamente , Diabetes Mellitus Experimental/complicações , Diabetes Mellitus Experimental/diagnóstico , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/induzido quimicamente , Diabetes Mellitus Tipo 2/diagnóstico , Angiopatias Diabéticas/sangue , Angiopatias Diabéticas/diagnóstico , Angiopatias Diabéticas/etiologia , Nefropatias Diabéticas/etiologia , Nefropatias Diabéticas/prevenção & controle , Dieta Hiperlipídica , Hemoglobinas Glicadas/metabolismo , Lipídeos/sangue , Masculino , Ratos Wistar , Estreptozocina , beta-Glucanas/isolamento & purificação
11.
Diab Vasc Dis Res ; 13(3): 192-200, 2016 05.
Artigo em Inglês | MEDLINE | ID: mdl-26818228

RESUMO

We sought to determine if vitamin D supplementation, to target 25(OH)D concentrations of 30-40 ng/mL, improves endothelial function in Singapore's multi-ethnic type 2 diabetes mellitus population. We randomised 64 type 2 diabetes mellitus patients with hypovitaminosis D to cholecalciferol 4000 International Unit/matching placebo [baseline 25(OH)D < 20 ng/mL] or cholecalciferol 2000 International Unit/matching placebo [baseline 25(OH)D: 20-30 ng/mL] daily for 16 weeks with a down titration at 8 weeks if 25(OH)D > 30 ng/mL. Endothelial function was assessed by peripheral tonometry (reactive hyperaemia index-endothelial peripheral arterial tonometry) and vascular biomarkers: E-selectin, von-Willebrand factor and high-sensitivity C-reactive protein. We compared the change from baseline parameters in the two groups using Student's t-test or Kruskal-Wallis test. A log-normal multivariate regression analysis was used to adjust for relevant baseline variables. The median reactive hyperaemia index in the vitamin D group increased from 0.65 (interquartile range: 0.42) to 0.73 (interquartile range: 0.36), whereas it decreased from 0.73 (interquartile range: 0.65) to 0.65 (interquartile range: 0.38) (p = 0.02) in the placebo group. After adjustment for baseline variables, the change was not statistically significant for reactive hyperaemia index (p = 0.07) and for other vascular biomarkers (p > 0.05). Targeted vitamin D supplementation for 16 weeks resulted in a small but non-significant improvement in endothelial function in a type 2 diabetes mellitus cohort.


Assuntos
Colecalciferol/uso terapêutico , Diabetes Mellitus Tipo 2/complicações , Angiopatias Diabéticas/tratamento farmacológico , Suplementos Nutricionais , Endotélio Vascular/efeitos dos fármacos , Vasodilatação/efeitos dos fármacos , Deficiência de Vitamina D/tratamento farmacológico , Adulto , Idoso , Biomarcadores/sangue , Colecalciferol/efeitos adversos , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/diagnóstico , Angiopatias Diabéticas/diagnóstico , Angiopatias Diabéticas/etiologia , Angiopatias Diabéticas/fisiopatologia , Suplementos Nutricionais/efeitos adversos , Método Duplo-Cego , Endotélio Vascular/fisiopatologia , Feminino , Humanos , Hiperemia/fisiopatologia , Masculino , Pessoa de Meia-Idade , Singapura , Centros de Atenção Terciária , Fatores de Tempo , Resultado do Tratamento , Vitamina D/análogos & derivados , Vitamina D/sangue , Deficiência de Vitamina D/sangue , Deficiência de Vitamina D/complicações , Deficiência de Vitamina D/diagnóstico
12.
Am J Hypertens ; 28(7): 868-76, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25523296

RESUMO

BACKGROUND: It has been hypothesized that arterial stiffness leads to generalized microvascular dysfunction and that individuals with type 2 diabetes mellitus (T2DM) are particularly prone to the detrimental effects of arterial stiffness. However, evidence for an association between stiffness and markers of generalized microvascular dysfunction is lacking. We therefore investigated the association between arterial stiffness and skin microvascular function in individuals without and with T2DM. METHODS: Cross-sectional data were used of The Supplementation en Vitamines et Mineraux Antioxydants 2 (SUVIMAX2) Study (n = 284/62.2 years/48.6% women/0% T2DM (by design)) and The Maastricht Study (n = 737/59.7 years/45.2% women/28.8% T2DM (by design)). Arterial stiffness was determined by carotid-femoral pulse wave velocity (cfPWV). Skin capillaroscopy was used to determine capillary density at baseline, and during reactive hyperemia and venous congestion. Laser Doppler flowmetry was used to assess acetylcholine- and local heating-induced vasoreactivity, and skin flowmotion. RESULTS: In The SUVIMAX2 Study, cfPWV (per +1 SD) was not associated with baseline capillary density (regression coefficient: -0.48 (95% confidence interval: 2.37; 1.41)) or capillary recruitment during venous congestion (0.54% (-0.74; 1.81%)). In addition, cfPWV was not associated with acetylcholine (-0.02% (-0.14; 0.10%)) or local heating-induced vasoreactivity (0.03% (-0.07; 0.12%)). In The Maastricht Study, in individuals without T2DM, cfPWV was not associated with baseline capillary density (-1.20 (-3.17; 0.77)), and capillary recruitment during reactive hyperemia (1.22% (-0.41; 2.84%)) or venous congestion (1.50% (-0.25; 3.25%)). In addition, cfPWV was not associated with flowmotion (-0.01 (-0.07; 0.06)). Results were adjusted for age and sex. Additional adjustments for confounders did not materially change these results. Results were qualitatively similar in individuals with T2DM. CONCLUSIONS: Arterial stiffness is not associated with skin microvascular function, irrespective of the presence of T2DM.


Assuntos
Diabetes Mellitus Tipo 2/complicações , Angiopatias Diabéticas/etiologia , Microcirculação , Microvasos/fisiopatologia , Pele/irrigação sanguínea , Rigidez Vascular , Acetilcolina/farmacologia , Adulto , Idoso , Velocidade do Fluxo Sanguíneo , Estudos Transversais , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/fisiopatologia , Angiopatias Diabéticas/diagnóstico , Angiopatias Diabéticas/fisiopatologia , Feminino , França , Humanos , Fluxometria por Laser-Doppler , Masculino , Microcirculação/efeitos dos fármacos , Angioscopia Microscópica , Microvasos/efeitos dos fármacos , Pessoa de Meia-Idade , Países Baixos , Estudos Prospectivos , Análise de Onda de Pulso , Fluxo Sanguíneo Regional , Temperatura Cutânea , Vasodilatação , Vasodilatadores/farmacologia
13.
Z Gerontol Geriatr ; 47(5): 415-24, 2014 Jul.
Artigo em Alemão | MEDLINE | ID: mdl-24271148

RESUMO

BACKGROUND: Whether and to what extent the complementary use of a biorhythm-defined physical stimulation of insufficient spontaneous arteriolar vasomotion contributes to increasing the therapeutic success of established treatment concepts were examined. MATERIALS AND METHODS: In a placebo-controlled study on a biometrically defined sample of older diabetes patients with impaired wound healing, measurements of representative features of the functional status of the microcirculation and the immune system were investigated using high-resolution methods (intravital microscopy, reflective spectrometry, white light spectroscopy combined with laser Doppler microflow measurements). The stimulation signal corresponding to physiological spontaneous arteriolar vasomotion was transmitted using an electromagnetic alternating field of low magnetic flux density. RESULTS: During the 27-day treatment and observation period, a complementary treatment effect of the applied biorhythm-defined physical vasomotion stimulation could be detected.


Assuntos
Arteríolas/imunologia , Angiopatias Diabéticas/imunologia , Angiopatias Diabéticas/terapia , Terapia por Estimulação Elétrica/métodos , Microcirculação/imunologia , Cicatrização/imunologia , Idoso , Velocidade do Fluxo Sanguíneo/imunologia , Terapia Combinada/métodos , Angiopatias Diabéticas/diagnóstico , Feminino , Humanos , Masculino , Manipulações Musculoesqueléticas/métodos , Estimulação Física/métodos , Efeito Placebo , Resultado do Tratamento
14.
Diab Vasc Dis Res ; 10(6): 483-8, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23823849

RESUMO

AIMS: The present study investigated the effects of lipid-lowering therapy with atorvastatin on skin microvascular function in patients with type 1 diabetes and dyslipidaemia. METHODS: Twenty patients received daily treatment with atorvastatin 80 mg or placebo during 2 months in a randomised, double-blind, cross-over study. Forearm skin microcirculation was investigated with laser Doppler perfusion imaging during iontophoresis of acetylcholine and sodium nitroprusside to assess endothelium-dependent and endothelium-independent microvascular reactivity, respectively. Various biochemical markers of endothelial function were also investigated. RESULTS: Endothelium-dependent microvascular reactivity decreased during atorvastatin (p < 0.001), showing a significant treatment effect compared with placebo (p = 0.04). Atorvastatin treatment was also associated with increased haemoglobin A1C levels from 7.45% to 7.77% (p = 0.008). CONCLUSIONS: The present study shows impaired endothelium-dependent skin microvascular function during high-dose atorvastatin treatment in patients with type 1 diabetes, thus implicating a risk for deterioration of microvascular function during such therapy in these patients.


Assuntos
Diabetes Mellitus Tipo 1/complicações , Angiopatias Diabéticas/etiologia , Dislipidemias/tratamento farmacológico , Endotélio Vascular/efeitos dos fármacos , Ácidos Heptanoicos/efeitos adversos , Inibidores de Hidroximetilglutaril-CoA Redutases/efeitos adversos , Microcirculação/efeitos dos fármacos , Pirróis/efeitos adversos , Pele/irrigação sanguínea , Administração Cutânea , Adulto , Atorvastatina , Biomarcadores/sangue , Micropartículas Derivadas de Células/metabolismo , Estudos Cross-Over , Diabetes Mellitus Tipo 1/sangue , Diabetes Mellitus Tipo 1/diagnóstico , Diabetes Mellitus Tipo 1/fisiopatologia , Angiopatias Diabéticas/sangue , Angiopatias Diabéticas/diagnóstico , Angiopatias Diabéticas/fisiopatologia , Método Duplo-Cego , Dislipidemias/sangue , Dislipidemias/complicações , Dislipidemias/diagnóstico , Endotélio Vascular/metabolismo , Endotélio Vascular/fisiopatologia , Feminino , Hemoglobinas Glicadas/metabolismo , Ácidos Heptanoicos/administração & dosagem , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/administração & dosagem , Iontoforese , Fluxometria por Laser-Doppler , Masculino , Pessoa de Meia-Idade , Pirróis/administração & dosagem , Fatores de Risco , Suécia , Fatores de Tempo , Resultado do Tratamento , Vasodilatadores/administração & dosagem
15.
World J Gastroenterol ; 19(19): 2963-8, 2013 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-23704830

RESUMO

AIM: To investigate the effect of Danzhijiangtang capsule (DJC) on monocyte chemoattractant protein-1 (MCP-1) mRNA expression in newly diagnosed type 2 diabetes mellitus (T2DM) subclinical vascular lesions. METHODS: Sixty-two patients with newly diagnosed T2DM subclinical vascular lesions were randomly divided into a control group and treatment group of 31 cases each. Oral antidiabetic therapy with routine western medicine was conducted in both groups, and the treatment group was additionally treated with DJCs. The treatment course for both groups was 12 wk. Before and after treatment, the total efficiency and traditional Chinese medicine (TCM) syndrome score were calculated. The fasting plasma glucose (FPG), 2-h plasma glucose (2hPG), fasting insulin (FINS), insulin resistance index (IRI), hemoglobin (Hb)A1c, blood lipids, and hemorheology indices were determined. In addition, the levels of vascular endothelial growth factors including thrombomodulin (TM), von Willebrand factor (vWF), P-selectin and MCP-1 mRNA were determined. RESULTS: After 12 wk of treatment, the TCM syndrome score was significantly decreased compared to before treatment in both groups. After treatment, FPG, 2hPG, HbA1c, FINS, IRI, total cholesterol, triglycerides, low-density lipoprotein, high-density lipoprotein, whole blood low shear specific viscosity, plasma specific viscosity, TM, vWF, P-selectin and MCP-1 mRNA were significantly improved compared to before treatment in both groups. After treatment, the total efficiency and TCM syndrome score in the treatment group were better than in the control group. FINS, IRI, whole blood high shear specific viscosity, plasma specific viscosity, TM, vWF, P-selectin and MCP-1 mRNA level in the treatment group were significantly reduced after treatment compared with control group. CONCLUSION: DJCs are efficacious in supplementing qi, nourishing yin and invigorating blood circulation, and upregulate MCP-1 mRNA expression in patients with T2DM subclinical vascular lesions.


Assuntos
Quimiocina CCL2/genética , Diabetes Mellitus Tipo 2/tratamento farmacológico , Angiopatias Diabéticas/tratamento farmacológico , Medicamentos de Ervas Chinesas/uso terapêutico , Hipoglicemiantes/uso terapêutico , RNA Mensageiro/sangue , Administração Oral , Biomarcadores/sangue , Glicemia/efeitos dos fármacos , Glicemia/metabolismo , Cápsulas , Distribuição de Qui-Quadrado , China , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/genética , Angiopatias Diabéticas/sangue , Angiopatias Diabéticas/diagnóstico , Angiopatias Diabéticas/etiologia , Angiopatias Diabéticas/genética , Medicamentos de Ervas Chinesas/administração & dosagem , Medicamentos de Ervas Chinesas/efeitos adversos , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Hipoglicemiantes/administração & dosagem , Insulina/sangue , Resistência à Insulina , Masculino , Pessoa de Meia-Idade , Selectina-P/sangue , Trombomodulina/sangue , Fatores de Tempo , Resultado do Tratamento , Fator de von Willebrand/metabolismo
16.
Indian Heart J ; 65(6): 683-90, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24407538

RESUMO

Diabetes mellitus (DM) is a pandemic disease and an important cardiovascular (CV) risk factor. The atherogenic dyslipidemia in diabetes (ADD) is characterized by high serum triglycerides, high small dense LDL levels, low HDL levels and postprandial lipemia. Insulin resistance is a primary cause for ADD. Though statins are highly effective for CVD prevention in DM but a significant residual CV risk remains even after optimal statin therapy. Fibrates, niacin and omega-3 fatty acids are used in addition to statin for treatment of ADD (specifically hypertriglyceridemia). All these drugs have some limitations and they are far from being ideal companions of statins. Many newer drugs are in pipeline for management of ADD. Dual PPAR α/γ agonists are in most advanced stage of clinical development and they have a rational approach as they control blood glucose levels (by reducing insulin resistance, a primary factor for ADD) in addition to modulating ADD. Availability of dual PPAR α/γ agnosits and other drugs for ADD management may improve CV outcomes and decrease morbidity and mortality in diabetic patients in future.


Assuntos
Aterosclerose/epidemiologia , Diabetes Mellitus Tipo 2/epidemiologia , Gerenciamento Clínico , Dislipidemias/tratamento farmacológico , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Aterosclerose/tratamento farmacológico , Aterosclerose/prevenção & controle , Comorbidade , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/tratamento farmacológico , Angiopatias Diabéticas/diagnóstico , Angiopatias Diabéticas/tratamento farmacológico , Angiopatias Diabéticas/epidemiologia , Dislipidemias/sangue , Dislipidemias/epidemiologia , Feminino , Seguimentos , Humanos , Masculino , Niacina/uso terapêutico , Fatores de Risco , Índice de Gravidade de Doença , Taxa de Sobrevida , Resultado do Tratamento , Triglicerídeos/sangue
18.
Diabetes Metab Syndr ; 5(1): 41-4, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-22814841

RESUMO

BACKGROUND: Diabetes mellitus and its complications are a significant cause of morbidity and mortality worldwide. Micronutrients have been evaluated as potential preventive and therapeutic measures in diabetes. The present study evaluated serum magnesium levels in diabetic patients-uncomplicated and those with macrovascular complications. METHOD: This study was done on 150 subjects (60 normal, healthy controls and 90 diabetics). The 90 diabetic patients were selected in the following categories-30 patients without complications (Study Group I), 30 diabetic patients with coronary artery disease (Study Group II) and 30 diabetic patients with peripheral vascular disease (Study Group III). Plasma glucose, glycated hemoglobin and serum magnesium levels were estimated in all the patients. RESULTS: Fasting plasma glucose and glycated hemoglobin levels were significantly higher in all the 3 study groups as compared to the controls, however, serum magnesium levels were significantly lower (p<0.05). In diabetic patients with coronary atherosclerosis or peripheral vascular disease, a significant negative correlation was observed between serum magnesium and fasting plasma glucose and glycated hemoglobin indicating the role of hypomagnesemia in diabetic complications. CONCLUSION: Dietary supplementation with magnesium in addition to classical therapies for diabetes may help in prevention of diabetic complications.


Assuntos
Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/complicações , Angiopatias Diabéticas/sangue , Angiopatias Diabéticas/etiologia , Magnésio/sangue , Adulto , Idoso , Biomarcadores/sangue , Glicemia/metabolismo , Estudos de Casos e Controles , Diabetes Mellitus Tipo 2/diagnóstico , Angiopatias Diabéticas/diagnóstico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
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