Anabolic androgenic steroids effects on the immune system: a review

2009 ◽  
Vol 4 (1) ◽  
pp. 19-33 ◽  
Author(s):  
Sonya Marshall-Gradisnik ◽  
Rachel Green ◽  
Ekua Brenu ◽  
Robert Weatherby
Keyword(s):  
Immune System ◽  
Immune Cell ◽  
Anabolic Steroids ◽  
Cell Number ◽  
Steroid Nucleus ◽  
Regime Types ◽  
Androgenic Anabolic Steroids ◽  
Differentiation And Proliferation ◽  
Androgenic Steroids ◽  
And Function

AbstractAndrogenic anabolic steroids (AAS) are synthetic derivatives of the male hormone testosterone. AAS are used by athletes and recreational users of all ages to enhance their athletic performance and/or physical appearance. While several adverse effects of AAS abuse have been described, their effect on the immune system has not been clearly elucidated. The literature generally indicates that supraphysiologic doses of AAS with an intact steroid nucleus are immunosuppressive, that is they reduce immune cell number and function. While those with alterations to the steroid nucleus are immunostimulatory as they induce the proliferation of T cells and other immune cells. Specifically, several common AAS have been shown to adversely influence lymphocyte differentiation and proliferation, antibody production, Natural Killer Cytotoxic activity and the production of certain cytokines, thereby altering the immune reaction. These effects may be profound and long lasting depending on the dosing regime, types or combinations of AAS used and the extent and duration of AAS abuse. Nevertheless, the effects of long term use of supraphysiologic doses of AAS on the immune system remain uncertain.

scholarly journals Cellular and metabolic mechanisms of nutrient actions in immune function

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Philip Newsholme
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Vitamin D ◽  
Immune System ◽  
Cell Function ◽  
Immune Cell ◽  
Cell Structure ◽  
Nutritional Intervention ◽  
Immune Cell Function ◽  
And Function

AbstractVarious nutrients can change cell structure, cellular metabolism, and cell function which is particularly important for cells of the immune system as nutrient availability is associated with the activation and function of diverse immune subsets. The most important nutrients for immune cell function and fate appear to be glucose, amino acids, fatty acids, and vitamin D. This perspective will describe recently published information describing the mechanism of action of prominent nutritional intervention agents where evidence exists as to their action and potency.

scholarly journals Androgenic anabolic steroids and arterial structure and function in male bodybuilders

2001 ◽  
Vol 37 (1) ◽  
pp. 224-230 ◽  
Author(s):  
Mark A Sader ◽  
Kaye A Griffiths ◽  
Robyn J McCredie ◽  
David J Handelsman ◽  
David S Celermajer
Keyword(s):  
Anabolic Steroids ◽  
Structure And Function ◽  
Arterial Structure ◽  
Androgenic Anabolic Steroids ◽  
And Function

scholarly journals Recent Advancements and Applications of Human Immune System Mice in Preclinical Immuno-Oncology

2019 ◽  
Vol 48 (2) ◽  
pp. 302-316 ◽  
Author(s):  
Michelle Curran ◽  
Maelle Mairesse ◽  
Alba Matas-Céspedes ◽  
Bethany Bareham ◽  
Giovanni Pellegrini ◽  
...  
Keyword(s):  
Immune System ◽  
New Technologies ◽  
Immune Cell ◽  
Human Immune System ◽  
Immunodeficient Mice ◽  
Graft Versus Host ◽  
Human Immune ◽  
And Function ◽  
Human Cytokines

Significant advances in immunotherapies have resulted in the increasing need of predictive preclinical models to improve immunotherapeutic drug development, treatment combination, and to prevent or minimize toxicity in clinical trials. Immunodeficient mice reconstituted with human immune system (HIS), termed humanized mice or HIS mice, permit detailed analysis of human immune biology, development, and function. Although this model constitutes a great translational model, some aspects need to be improved as the incomplete engraftment of immune cells, graft versus host disease and the lack of human cytokines and growth factors. In this review, we discuss current HIS platforms, their pathology, and recent advances in their development to improve the quality of human immune cell reconstitution. We also highlight new technologies that can be used to better understand these models and how improved characterization is needed for their application in immuno-oncology safety, efficacy, and new modalities therapy development.

EZH2 function in immune cell development

2020 ◽  
Vol 401 (8) ◽  
pp. 933-943 ◽  
Author(s):  
Stephen L. Nutt ◽  
Christine Keenan ◽  
Michaël Chopin ◽  
Rhys S. Allan
Keyword(s):  
Immune System ◽  
Cell Function ◽  
Immune Cell ◽  
Proliferating Cells ◽  
Hematopoietic Stem ◽  
Polycomb Repressive Complex 2 ◽  
Current State ◽  
Core Components ◽  
And Function ◽  
Cell Cycle Inhibitors

AbstractThe polycomb repressive complex 2 (PRC2) consists of three core components EZH2, SUZ12 and EED. EZH2 catalyzes the methylation of lysine 27 of histone H3, a modification associated with gene silencing. Through gene duplication higher vertebrate genomes also encode a second partially redundant methyltransferase, EZH1. Within the mammalian immune system most research has concentrated on EZH2 which is expressed predominantly in proliferating cells. EZH2 and other PRC2 components are required for hematopoietic stem cell function and lymphocyte development, at least in part by repressing cell cycle inhibitors. At later stages of immune cell differentiation, EZH2 plays essential roles in humoral and cell-mediated adaptive immunity, as well as the maintenance of immune homeostasis. EZH2 is often overactive in cancers, through both gain-of-function mutations and over-expression, an observation that has led to the development and clinical testing of specific EZH2 inhibitors. Such inhibitors may also be of use in inflammatory and autoimmune settings, as EZH2 inhibition dampens the immune response. Here, we will review the current state of understanding of the roles for EZH2, and PRC2 more generally, in the development and function of the immune system.

scholarly journals The impact of leukapheresis on immune-cell number and function in patients with advanced cancer

2015 ◽  
Vol 64 (11) ◽  
pp. 1429-1435 ◽  
Author(s):  
James L. Gulley ◽  
Jennifer Marté ◽  
Christopher R. Heery ◽  
Ravi A. Madan ◽  
Seth M. Steinberg ◽  
...  
Keyword(s):  
Advanced Cancer ◽  
Immune Cell ◽  
Cell Number ◽  
And Function ◽  
The Impact

scholarly journals Immunometabolism at the Nexus of Cancer Therapeutic Efficacy and Resistance

2021 ◽  
Vol 12 ◽  
Author(s):  
Javier Traba ◽  
Michael N. Sack ◽  
Thomas A. Waldmann ◽  
Olga M. Anton
Keyword(s):  
Immune System ◽  
Immune Cells ◽  
Immune Cell ◽  
Cell Metabolism ◽  
Immune Surveillance ◽  
Antitumor Effects ◽  
Cancer Management ◽  
Immunosuppressive Tumor Microenvironment ◽  
And Function ◽  
Main Effects

Constitutive activity of the immune surveillance system detects and kills cancerous cells, although many cancers have developed strategies to avoid detection and to resist their destruction. Cancer immunotherapy entails the manipulation of components of the endogenous immune system as targeted approaches to control and destroy cancer cells. Since one of the major limitations for the antitumor activity of immune cells is the immunosuppressive tumor microenvironment (TME), boosting the immune system to overcome the inhibition provided by the TME is a critical component of oncotherapeutics. In this article, we discuss the main effects of the TME on the metabolism and function of immune cells, and review emerging strategies to potentiate immune cell metabolism to promote antitumor effects either as monotherapeutics or in combination with conventional chemotherapy to optimize cancer management.

THE EFFECTS OF ANDROGENIC-ANABOLIC STEROIDS ON THE RAT ADRENALS ATROPHIED BY CORTISOL

1968 ◽  
Vol 57 (1) ◽  
pp. 16-22 ◽  
Author(s):  
O. Linèt ◽  
V. Bumba
Keyword(s):  
Water Retention ◽  
Anabolic Steroids ◽  
Dry Weight ◽  
Cholesterol Content ◽  
Male Rats ◽  
Anabolic Androgenic Steroids ◽  
Simultaneous Treatment ◽  
Rat Adrenals ◽  
Androgenic Anabolic Steroids ◽  
Androgenic Steroids

ABSTRACT Adult male rats were administered 19-nortestosterone phenylpropionate (NTPP), methandrostenolone (MA) (2 mg/100 g/day), cortisol (1 mg/100 g/day) and a combination of these steroids for 10 consecutive days. Cortisol caused a decrease in the adrenal weight on the 5th day and this effect was partially inhibited by NTPP or MA on the 8th and 11th day. The adrenal cholesterol content fell after NTPP on the 5th, 8th and 11th day, after cortisol treatment on the 8th and 11th day, and after MA on the 11th day. The cholesterol depleting effect of cortisol was counteracted only by simultaneous treatment with NTPP on the 11th day. The decrease in wet and dry weight of adrenals and of their nitrogen and protein content induced by the injection of cortisol for 10-days was markedly inhibited by the simultaneous administration of NTPP or MA. Neither of these anabolic-androgenic steroids affected the enhanced water retention in the adrenals caused by cortisol. NTPP or MA alone did not influence the parameters mentioned above.

scholarly journals Effects of pegylated G-CSF on immune cell number and function in patients with gynecological malignancies

2010 ◽  
Vol 8 (1) ◽  
pp. 114 ◽  
Author(s):  
Giuseppina Bonanno ◽  
Annabella Procoli ◽  
Andrea Mariotti ◽  
Maria Corallo ◽  
Alessandro Perillo ◽  
...  
Keyword(s):  
Immune Cell ◽  
Cell Number ◽  
Gynecological Malignancies ◽  
And Function

scholarly journals Exposure to pesticides in utero impacts the fetal immune system and response to vaccination in infancy

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Mary Prahl ◽  
Pamela Odorizzi ◽  
David Gingrich ◽  
Mary Muhindo ◽  
Tara McIntyre ◽  
...  
Keyword(s):  
Immune System ◽  
Immune Cell ◽  
Biological Effects ◽  
In Utero ◽  
Systemic Absorption ◽  
Human Populations ◽  
Mosquito Vector ◽  
Human Immune System ◽  
And Function ◽  
Fetal Immune System

AbstractThe use of pesticides to reduce mosquito vector populations is a cornerstone of global malaria control efforts, but the biological impact of most pesticides on human populations, including pregnant women and infants, is not known. Some pesticides, including carbamates, have been shown to perturb the human immune system. We measure the systemic absorption and immunologic effects of bendiocarb, a commonly used carbamate pesticide, following household spraying in a cohort of pregnant Ugandan women and their infants. We find that bendiocarb is present at high levels in maternal, umbilical cord, and infant plasma of individuals exposed during pregnancy, indicating that it is systemically absorbed and trans-placentally transferred to the fetus. Moreover, bendiocarb exposure is associated with numerous changes in fetal immune cell homeostasis and function, including a dose-dependent decrease in regulatory CD4 T cells, increased cytokine production, and inhibition of antigen-driven proliferation. Additionally, prenatal bendiocarb exposure is associated with higher post-vaccination measles titers at one year of age, suggesting that its impact on functional immunity may persist for many months after birth. These data indicate that in utero bendiocarb exposure has multiple previously unrecognized biological effects on the fetal immune system.

scholarly journals Toll-Like Receptor Signaling in the Establishment and Function of the Immune System

Cells ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1374
Author(s):  
Jahnavi Aluri ◽  
Megan A. Cooper ◽  
Laura G. Schuettpelz
Keyword(s):  
Immune System ◽  
Immune Cell ◽  
System Development ◽  
Cell Types ◽  
Tlr Signaling ◽  
Inborn Errors ◽  
Immune System Dysfunction ◽  
Immune System Development ◽  
And Function ◽  
Immune Defects

Toll-like receptors (TLRs) are pattern recognition receptors that play a central role in the development and function of the immune system. TLR signaling promotes the earliest emergence of hematopoietic cells during development, and thereafter influences the fate and function of both primitive and effector immune cell types. Aberrant TLR signaling is associated with hematopoietic and immune system dysfunction, and both loss- and gain-of- function variants in TLR signaling-associated genes have been linked to specific infection susceptibilities and immune defects. Herein, we will review the role of TLR signaling in immune system development and the growing number of heritable defects in TLR signaling that lead to inborn errors of immunity.

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