Endocrine Abstracts

Introduction: Prostate cancer is a neoplasm with high incidence and prevalence in the elderly population in western countries. Androgen deprivation therapy (ADT) has been used in locally advanced or metastatic disease, although most relapse, becoming hormone resistant, which is a poor prognostic event.Objectives: The aim of this study was to evaluate the association of genetic polymorphisms NOS2, GPRC6A, VKORC1, ARGI and ARGII in prostate cancer, particu...

Introduction and Aim: Dopamine receptor D2 (DRD2) polymorphism (rs1800497) appears to be associated with increased susceptibility to the development of type 2 diabetes mellitus (T2DM). The dopamine transporter (DAT) determines dopamine signalling, responsible for the reuptake of its active form from the synapse. Polymorphism in the DAT gene (rs2836317) can increase dopamine reuptake in the synaptic cleft. However, its association with T2DM is still controversial.<p class="...

Introduction: Osteoporosis is a multifactorial disease characterized by reduced bone mass and increased risk of fragility fractures. Menopause predisposes women to osteoporosis due to declining estrogen levels. Iron is known to play a relevant role in the development of osteoporosis since iron suppresses osteoblast formation and may also stimulate osteoclast resorption of bone. Also, homocysteine is a known risk factor for osteoporotic fractures and is related to DNA methylati...

The European Working Group on Sarcopenia in Older People (EWGSOP2) defined in 2018 ‘sarcopenia as muscle disease (muscle failure), with low muscle strength overtaking the role of low muscle mass as a principal determinant’; sarcopenia increases risk of falls and fractures, impairs ability to perform activities of daily living, leads to mobility disorders and low quality of life and death. The diagnosis is confirmed by low muscle quantity or quality. The muscle quanti...

Objectives: To study the association of serotonin transporter gene (SLC6A4) polymorphism 5HTTVNTR and serotonin receptor 2A polymorphism 5HT2A_T102C with bone mineral density and metabolic parameters of bone remodelling.Materials and methods: BMD (g/cm2) was measured by DEXA in 105 post-menopausal women: 35 with normal BMD (age=58.30±1.33 years; BMI=28.18 [19.13-39.87] kg/m2) and 70 with osteoporosis (age=68.30±1.09 years; BMI=28.90 ...

Objectives: To study the association of Beta-2 adrenergic receptor (ADRB2) gene polymorphism Arg16Gly with bone mineral density and metabolic parameters of bone remodelling.Materials and methods: BMD (g/cm2) was measured by DEXA in 105 post-menopausal women: 35 with normal BMD (age=58.30±1.33 years; BMI=28.18 [19.13-39.87] kg/m2) and 70 with osteoporosis (age=68.30±1.09 years; BMI=28.90 [20.78-43.86] kg/m2). Met...

Introduction: A useful tool for disease clinical characterization and treatment of type 2 diabetes is the knowledge on the status of several biomarkers. The aim of this study was to evaluate the levels of cardiovascular, oxidative stress and nutritional biomarkers and their relationship with the presence of type 2 diabetes and angiopathy.Methods: A population-based case-control study in 150 Portuguese type 2 diabetic patients was performed. Group I &#150...

Introduction: Besides the benefits of low-to-high intensity physical activity (PA) on metabolism, it is currently emerging that excessive PA can be deleterious with serious implications not only in muscle but also, bone remodeling. Despite recent findings remains still unclear and controversial, we hypothesize that exercise of impact, like mountain cycling, beyond influencing the metabolic and skeletal profile, represents an important model of profoundly changes in bone metabo...

Introduction: There is a lack of epidemiological data on the distribution of haptoglobin and C677T of MTHFR polymorphisms in Caucasians type 2 diabetic patients. The contribution of these two genetic factors to hyperhomocysteinemia and hypercysteinemia can be useful to prevent cardiovascular events and to reduce public health costs. The aim of this study is to evaluate the contribution of haptoglobin and C677T polymorphisms for hyperhomocysteinemia and hypercysteinemia in Port...

Introduction: Several studies suggest DHEA and DHEAS (DHEA(S)) are related to memory enhancement and a better performance under stress. An anti-cortisol action may contribute to those relations. We looked for a new level of evidence, by studying DHEA(S) and cortisol relations to working memory (WM) and distraction in humans also at the electrophysiological level.Subjects and methods: Twenty-eight healthy female volunteers (18–26 years old) were pres...