Immunostimulant

Classification

There are two main categories of immunostimulants:

1. Specific immunostimulants provide antigenic specificity in immune response, such as vaccines or any antigen.
2. Non-specific immunostimulants act irrespective of antigenic specificity to augment immune response of other antigen or stimulate components of the immune system without antigenic specificity, such as adjuvants and non-specific immunostimulators.

Non-specific

Many endogenous substances are non-specific immunostimulators. For example, female sex hormones are known to stimulate both adaptive and innate immune responses. Some autoimmune diseases such as lupus erythematosus strike women preferentially, and their onset often coincides with puberty. Other hormones appear to regulate the immune system as well, most notably prolactin, growth hormone and vitamin D.

Some publications point towards the effect of deoxycholic acid (DCA) as an immunostimulant of the non-specific immune system, activating its main actors, the macrophages. According to these publications, a sufficient amount of DCA in the human body corresponds to a good immune reaction of the non-specific immune system.

Claims made by marketers of various products and alternative health providers, such as chiropractors, homeopaths, and acupuncturists to be able to stimulate or "boost" the immune system generally lack meaningful explanation and evidence of effectiveness.

Uses

Immunostimulants have been recommended to help prevent acute illness related to chronic obstructive pulmonary disease and they are sometimes used to treat chronic bronchitis. The evidence in the form of high quality clinical trials to support their use is weak, however, there is some evidence of benefit and they appear to be safe. The most commonly used immunostimulant type for this purpose are bacterial-derived immunostimulants. The goal is to stimulate the person's immune system in order to prevent future infections that may result in an acute episode or exacerbation of COPD.

References

References

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2. (2015). "Mucosal Immunology". Academic Press.
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5. (September 2004). "Sex hormones influence on the immune system: basic and clinical aspects in autoimmunity". Lupus.
6. (1 February 2000). "Presence of secretory leukocyte protease inhibitor in human endometrium and first trimester decidua suggests an antibacterial protective role". Molecular Human Reproduction.
7. (1 June 2000). "The Roles of Prolactin, Growth Hormone, Insulin-Like Growth Factor-I, and Thyroid Hormones in Lymphocyte Development and Function: Insights from Genetic Models of Hormone and Hormone Receptor Deficiency". Endocrine Reviews.
8. (1 August 2005). "Noncalcemic Actions of Vitamin D Receptor Ligands". Endocrine Reviews.
9. (1 May 1971). "Evidence of the Participation of Deoxycholate in Cancer Immunity". Zeitschrift für Naturforschung B.
10. (1972). "Potentiation of the immune response with DCA". Praktický Lékař.
11. (1982). "Regulation of the immune response with DCA". Sborník Lékařský.
12. Hall, Harriet. (July–August 2020). "How You Can Really Boost Your Immune System". [[Center for Inquiry]].
13. Global Initiative for Chronic Obstructive Lung Disease – GOLD. (2023). "2023 GOLD Report".
14. (2022). "Immunostimulants versus placebo for preventing exacerbations in adults with chronic bronchitis or chronic obstructive pulmonary disease". Cochrane Database of Systematic Reviews.