Endothelial function in men with type 2 diabetes without clinical signs of cardiovascular disease

Khripun, Irina; Vorobyev, Sergey; Morgunov, M. N.; Kogan, M. I.

doi:10.14341/dm8017

Cited by 5 publications

(1 citation statement)

References 13 publications

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“…Ранее у здоровых добровольцев была обнаружена связь низкого числа CAG-повторов в гене AR с нарушениями артериальной вазореактивности вне зависимости от уровня общего и свободного T [29]. Некоторыми исследованиями [30,31] доказано ухудшение функции эндотелия у больных сахарным диабетом 2-го типа. В то же время существуют данные о негативном влиянии дефицита Т на сердечно-сосудистую систему у мужчин [32,33].…”

Section: эндотелийunclassified

Sensitivity to androgens: beyond the well-known facts

Khripun¹,

Воробьев²

2018

Probl Endokrinol (Mosk)

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Gonadal and extragonadal effects of testosterone in males have been extensively investigated in recent years. To date, there is no doubt that testosterone deficiency in males is associated with increased risk of obesity, type 2 diabetes mellitus, hypertension, and atherosclerosis. Sensitivity to androgens determined by the length of CAG-repeats in the androgen receptor gene is one of the underlying mechanisms of testosterone action. Increase in the number of CAG-repeats reduces activity of androgen receptors, which manifests in the form of low sensitivity to testosterone. On the contrary, decrease in the number of trinucleotide repeats is accompanied by increased sensitivity of the receptors to androgens. This review discusses the effect of androgen receptor gene polymorphism on embryogenesis and sex differentiation, regulation of spermatogenesis, progression of cancer and benign prostatic hyperplasia, symptoms of hypogonadism, control of carbohydrate and lipid metabolism, bone mineral density, vascular endothelium, response to replacement therapy with testosterone, as well as on the psychosocial aspects of personality in males. Implementation of the study of androgen receptor gene polymorphism into clinical practice will enable not only predicting male fertility or the risk of developing prostate cancer, but also selecting an individual therapy for testosterone deficiency.

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Section: эндотелийunclassified

Sensitivity to androgens: beyond the well-known facts

Khripun¹,

Воробьев²

2018

Probl Endokrinol (Mosk)

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Influence of testosterone substitution on glycemic control and endothelial markers in men with newly diagnosed functional hypogonadism and type 2 diabetes mellitus: a randomized controlled trial

et al. 2018

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Endothelial function status in hypogonadal men

Khripun

Vorobyev

2022

Diabetes mellitus

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Background: Type 2 diabetes mellitus (T2DM) and hypogonadism are mutually aggravating diseases associated with the development and progression of cardiovascular pathology. The status of endothelial function in men with T2DM and hypogonadism hasn’t been studied.Aims: To assess the effect of hypogonadism on endothelial function in men with T2DM.Materials and methods: Patients underwent clinical studies, assessment of carbohydrate and lipid metabolism, the content of sex hormones (total testosterone (T), sex hormones binding globulin, free T, luteinizing hormone) and markers of endothelial function (nitric oxide (NO), endothelial nitric oxide synthase type 3 (eNOS3), endothelin, adhesion molecules ICAM-1, VCAM-1, p- and e-selectins, cadherin), ultrasound examinations of endothelium-dependent vasodilation (EDVD) of the brachial artery (BA) and carotid arteries with an assessment of the thickness of intima-media complex (TIM) were performed.Results: The study included 276 men with T2DM (age 54.0[49;60] years), who were divided into 2 groups: 1–124 patients with hypogonadism; 2–152 eugonadal patients. Reduction of the endothelial vasomotor function was detected in 32.4% of patients in the 2st group and in 55.3% of the 1nd group (χ2=6.1; p=0.01), which was associated with a decrease in EDVD by 29.8 % (p<0.001) and an increase in the time of development of maximal BA vasodilation by 30 seconds in patients with hypogonadism (p<0.001). The TIM of the carotid arteries was 10% more in group 1 compared with group 2 (p=0.03). The level of NO in the 1st group was reduced by 1.6 times (p=0.001), eNOS3–by 1.5 times (p=0.038) compared with the 2nd group. The concentrations of adhesion molecules were higher in group 1 compared to group 2: VCAM-1 by 32.5% (p<0.001), ICAM-1 by 43.5% (p<0.001), p-selectin–by 19.3% (p=0.004), cadherin–6 times (p<0.001).Conclusion: Hypogonadism in men with T2DM is associated with the development of endothelial dysfunction, which manifests in a weakening of the EDVD and a slowdown in its development, as well as disturbances of the secretory activity of endothelium–a decrease in NO synthesis and activation of the adhesion molecules expression, which can be regarded as an universal pathogenetic mechanism of the development of cardiovascular diseases in combination of T deficiency and T2DM.

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Endothelial function in men with type 2 diabetes without clinical signs of cardiovascular disease

Cited by 5 publications

References 13 publications

Sensitivity to androgens: beyond the well-known facts

Sensitivity to androgens: beyond the well-known facts

Influence of testosterone substitution on glycemic control and endothelial markers in men with newly diagnosed functional hypogonadism and type 2 diabetes mellitus: a randomized controlled trial

Endothelial function status in hypogonadal men

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