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Immunological and dermatological impact of progesterone
Insights
Progesterone increases Langerhans cells in epithelial tissues, impacting HIV and STD incidence. It also suppresses matrix metalloproteinase activity, affecting skin and tissue regeneration.
Area of Science:
- Immunology
- Endocrinology
- Dermatology
Background:
- C21 steroids, particularly progesterone, play roles beyond reproduction.
- Langerhans cells are crucial in immunology and skin immunity.
- Matrix metalloproteinases (MMPs) are vital for tissue regeneration.
Purpose of the Study:
- To investigate the effect of progesterone on Langerhans cell numbers.
- To explore progesterone's influence on matrix metalloproteinase activity in the skin.
Main Methods:
- The study discusses the physiological effects of progesterone.
- It reviews the impact of progesterone on immune cells and tissue remodeling.
Main Results:
- Progesterone increases the number of Langerhans cells in epithelial cells.
- Progesterone suppresses the expression of certain matrix metalloproteinases.
- This leads to reduced collagenolytic activity in the skin.
Conclusions:
- Progesterone influences immune cell populations and tissue-modulating enzymes.
- These effects have implications for gender-specific HIV infection and premenstrual sexually transmitted disease incidence.
- The dermatological relevance of progesterone's effect on MMPs is highlighted.
Abstract:
C21 steroids and especially progesterone are involved in various physiological processes besides reproduction. Langerhans cells are becoming a major topic in immunology and, from this point, it is of high interest that progesterone is able to increase the number of Langerhans cells in different epithelial cells. This has an impact for a gender specificity of HIV1 infection, and also for the high premenstrual incidence of sexually transmitted diseases. Matrix metalloproteinase activity is of high physiological importance for tissue regeneration; progesterone suppresses the expression of some members of the matrix metalloproteinase super-family and reduces the collagenolytic activity. These effects can be observed during pregnancy, but are not only apparent on the myometrium; the suppressing effect of progesterone on matrix metalloproteinases can also be observed in the skin. The dermatological aspect of this observation is discussed.