Open AccessCommensal bacteria and immunity of the gastrointestinal, respiratory and genitourinary tracts
Author(s) -
Beata Tokarz–Deptuła,
Joanna Śliwa-Dominiak,
Mateusz Adamiak,
Karolina Bąk,
Wiesław Deptuła
Publication year - 2016
Publication title -
postępy higieny i medycyny doświadczalnej
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.275
H-Index - 34
eISSN - 1732-2693
pISSN - 0032-5449
DOI - 10.5604/17322693.1204954
Subject(s) - immune system , bacteria , gastrointestinal tract , genitourinary system , microbiology and biotechnology , immunity , biology , pathogenic bacteria , commensalism , microorganism , respiratory tract , immunology , respiratory system , biochemistry , genetics , anatomy
Commensal bacteria are microorganisms that occur among others in the gastrointestinal, respiratory and urogenital tract not exhibit the characteristics of pathogenicity, and act on the immune system and the metabolism of macroorganism and "create" protective barrier against pathogenic bacteria. Currently, it is estimated that the number of commensal bacteria inhabiting in and on human, are more than ten times the number of cells that build the body. The composition of these microorganisms depends on health and physiological status of macroorganism, including its immune status, but also largely on environmental factors (living and diet). These bacteria affecting the immune system in the gastrointestinal, respiratory and urogenital tract, stimulate the synthesis of a number of immunological substances that interact multiphase, for example: blocking the adhesion of pathogenic microorganisms and to reduce or entirely eliminate their influence on the contact and macroorganism.