Zinc status, insulin resistance and glycoxidative stress in elderly subjects with type 2 diabetes mellitus.

Zinc deficiencies have been reported in numerous pathologies, such as diabetes mellitus, but also in the physiological process of ageing. Similarly, the end products of glycoxidation processes, advanced glycation end products (AGEs), are damaging compounds, a myriad of reports linking them to the development and progression of several age-associated chronic diseases. The aim of the present study was to analyze the relationships between zinc status, glycoxidative stress and insulin resistance (IR) in elderly subjects with type 2 diabetes mellitus (T2DM).

Correlations of sialic acid with glycated hemoglobin A1c and glycemia in postmenopausal women with type-2 diabetes mellitus.

For women in the postmenopausal period, age-related changes in the hormonal status are associated with a higher risk for type-2 diabetes and its complications. The tissue injury caused by diabetic vascular complications can induce a release of sialic acid (SA) into the general circulation leading to increased levels. The present study is a cross-sectional single center study of 77 women in the postmenopausal period.

Variation of total serum sialic acid concentration in postmenopausal women.

Given its location and ubiquitous distribution, sialic acid can mediate or modulate a wide variety of physiological and pathological processes; however, there is scarce data regarding the associations between sialic acid serum levels and sex, age and menopause. The present study evaluated the age-related changes in serum sialic acid (SA) levels in 97 elderly subjects, including men and postmenopausal women. A significant increase in serum levels of sialic acid in postmenopausal women and a significant decrease in men were observed in an age-dependent manner.