Modern ideas about the importance of providing zinc in infectious diseases in children

Authors

DOI:

https://doi.org/10.15574/SP.2023.131.97

Keywords:

viral infection, bacterial infection, clinic, risk factors, micronutrient, zinc

Abstract

Zinc (Zn) is an essential trace element that is critical for growth, development and maintenance of immune function. Zn is an indispensable trace element for humans, which is part of more than 20 metalloenzymes, including DNA and RNA polymerase, phosphatase, carbonic anhydrase and some others. The cycle of cell development requires this trace element. The permeability of cell membranes is also related to Zn. It has antioxidant properties and delays the apoptosis of peripheral cells. The formation of immunity depends on the body’s supply of Zn, and its deficiency causes atrophy of the thymic-lymphatic system. Zn is part of insulin, accelerates the regeneration of the mucous layer of the intestines, increases the activity of enzymes of the brush border of enterocytes, increases the level of secretory antibodies and the intensity of cellular immunity. The provision of this element cannot but affect the course of various infectious pathologies.

Purpose - by analyzing modern literature data, to find out the importance of Zn provision in infectious pathologies in children.

It is analyzed a review of the literature on the pathogenetic role of Zn in the diagnosis, pathogenesis and treatment of infectious diseases, based on a search for articles in the Science, Medline and PubMed databases published from January 2017 to June 2021.

An analysis of current literature has shown that Zn is an important micronutrient involved in the regulation of innate and adaptive immune responses. Zn is necessary to ensure the barrier function of membranes. It is involved in the modulation of the pro-inflammatory response. Zn homeostasis is essential for many aspects of the immune system, including hematopoiesis, cell maturation and differentiation, cell cycle progression, and proper immune cell function. Consequently, Zn deficiency leads to cell-mediated immune dysfunctions. Such dysfunctions lead to deterioration of the body's response to bacterial infection. Zn is known to modulate antiviral immunity. Due to zinc, the production of interferon-α is activated and its antiviral activity is increased. Studies show that during the infectious process there is a decrease in the concentration of zinc in the blood plasma. Such changes, on the one hand, provide the needs of immune protection factors, and on the other hand, reduce the availability of the trace element for pathogens.

Conclusions. Zn is one of the important trace elements that plays a leading role in maintaining homeostasis and is an integral component of the pathogenesis of various pathological conditions of infectious origin. The most studied is Zn deficiency in infectious diarrhea in children, but studies have been conducted in developing countries with limited resources. No works studying the prevalence of Zn deficiency in Ukraine were found.

No conflict of interests was declared by the authors.

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Published

2023-04-28