Selected zinc metabolism parameters in premenopausal and postmenopausal women with moderate and severe primary arterial hypertension

Zinc and Diabetes: A Connection between Micronutrient and Metabolism

Diabetes mellitus is a global health problem and a major contributor to mortality and morbidity. The management of this condition typically involves using oral antidiabetic medication, insulin, and appropriate dietary modifications, with a focus on macronutrient intake. However, several human studies have indicated that a deficiency in micronutrients, such as zinc, can be associated with insulin resistance as well as greater glucose intolerance. Zinc serves as a chemical messenger, acts as a cofactor to increase enzyme activity, and is involved in insulin formation, release, and storage. These diverse functions make zinc an important trace element for the regulation of blood glucose levels. Adequate zinc levels have also been shown to reduce the risk of developing diabetic complications. This review article explains the role of zinc in glucose metabolism and the effects of its inadequacy on the development, progression, and complications of diabetes mellitus. Furthermore, it describes the impact of zinc supplementation on preventing diabetes mellitus. The available information suggests that zinc has beneficial effects on the management of diabetic patients. Although additional large-scale randomized clinical trials are needed to establish zinc's clinical utility further, efforts should be made to increase awareness of its potential benefits on human health and disease.

The effect of oral zinc supplementation on cervicovaginal lavage fluid zinc level

OBJECTIVES

To investigate the effect of oral zinc supplementation on cervicovaginal lavage fluid (CVL) zinc level in pre and postmenopausal women.

STUDY DESIGN

A prospective interventional cohort study was carried out by the enrollment of twelve premenopausal and ten postmenopausal women without significant gynecological conditions. Women received daily oral supplementation with 30 mg of zinc for two weeks. Clinical and demographic variables were stored in a dedicated database. Vaginal Health Index was calculated, and vaginal cytology was obtained. CVL and serum samples were collected in a standardized fashion before and after completion of the oral supplementation. Zinc and copper levels were measured by inductively coupled plasma optical emission spectrometry. Paired t-test was used to compare the before and after treatment results.

RESULTS

Serum zinc levels increased significantly both in the pre and postmenopausal women (0.88 ± 0.17 vs. 1.06 ± 0.23, p < 0.01 and 0.83 ± 0.24 vs. 0.96 ± 0.33, p < 0.01) after two weeks of daily oral zinc supplementation. CVL zinc level was significantly higher in the premenopausal group compared to the postmenopausal group before and after supplementation (0.13 ± 0.05 vs. 0.06 ± 0.04, p < 0.01 and 0.10 ± 0.03 vs. 0.05 ± 0.01, p < 0.01). Zinc supplementation had no significant impact on the CVL zinc level in either group. Neither serum nor CVL copper levels were affected by the zinc supplementation. There was no significant correlation between serum and CVL zinc or copper levels.

CONCLUSION

Daily oral supplementation with 30 mg of zinc had no significant impact on CVL zinc level despite a significant rise in serum zinc level.

A Systematic Review on the Implication of Minerals in the Onset, Severity and Treatment of Periodontal Disease

Periodontal disease is an inflammatory disease with high prevalence in adults that leads to destruction of the teeth-supporting tissues. Periodontal therapy has been traditionally directed at reduction of the bacterial load to a level that encourages health-promoting bacteria and maintenance of oral-hygiene. The role of nutrition in different chronic inflammatory diseases has been the subject of an increasing body of research in the last decades. In this sense, there has been an important increase in the volume of research on role of nutrition in periodontitis since the diet has known effects on the immune system and inflammatory cascades. Minerals play a key role in all these processes due to the multiple pathways where they participate. To clarify the role of the different minerals in the establishment, progression and/or treatment of this pathology, a systemically review of published literature cited in PubMed until May 2016 was conducted, which included research on the relationship of these elements with the onset and progression of periodontal disease. Among all the minerals, calcium dietary intake seems important to maintain alveolar bone. Likewise, dietary proportions of minerals that may influence its metabolism also can be relevant. Lastly, some observations suggest that all those minerals with roles in immune and/or antioxidant systems should be considered in future research.

Zinc: The Metal of Life

The importance of zinc was 1st reported for Aspergillus niger. It took over 75 y to realize that zinc is also an essential trace element for rats, and an additional 30 y went by before it was recognized that this was also true for humans. The adult body contains about 2 to 3 g of zinc. Zinc is found in organs, tissues, bones, fluids, and cells. It is essential for many physiological functions and plays a significant role in a number of enzyme actions in the living systems. Bioinformatics estimates report that 10% of the human proteome contains zinc-binding sites. Based on its role in such a plethora of cellular components, zinc has diverse biological functions from enzymatic catalysis to playing a crucial role in cellular neuronal systems. Thus, based on the various published studies and reports, it is pertinent to state that zinc is one of the most important essential trace metals in human nutrition and lifestyle. Its deficiency may severely affect the homeostasis of a biological system. This review compiles the role of zinc in prophylaxis/therapeutics and provides current information about its effect on living beings.