Antiinflammatory effect of androgen receptor activation in human benign prostatic hyperplasia cells

Progression of benign prostatic hyperplasia (BPH) involves chronic inflammation and immune dysregulation. Preclinical studies have demonstrated that prostate inflammation and tissue remodeling are exacerbated by hypogonadism and prevented by testosterone supplementation. We now investigated whether,...

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Veröffentlicht in:Journal of endocrinology 2012-07, Vol.214 (1), p.31-43
Hauptverfasser: Vignozzi, Linda, Cellai, Ilaria, Santi, Raffaella, Lombardelli, Letizia, Morelli, Annamaria, Comeglio, Paolo, Filippi, Sandra, Logiodice, Federica, Carini, Marco, Nesi, Gabriella, Gacci, Mauro, Piccinni, Marie-Pierre, Adorini, Luciano, Maggi, Mario
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container_issue 1
container_start_page 31
container_title Journal of endocrinology
container_volume 214
creator Vignozzi, Linda
Cellai, Ilaria
Santi, Raffaella
Lombardelli, Letizia
Morelli, Annamaria
Comeglio, Paolo
Filippi, Sandra
Logiodice, Federica
Carini, Marco
Nesi, Gabriella
Gacci, Mauro
Piccinni, Marie-Pierre
Adorini, Luciano
Maggi, Mario
description Progression of benign prostatic hyperplasia (BPH) involves chronic inflammation and immune dysregulation. Preclinical studies have demonstrated that prostate inflammation and tissue remodeling are exacerbated by hypogonadism and prevented by testosterone supplementation. We now investigated whether, in humans, hypogonadism was associated with more severe BPH inflammation and the in vitro effect of the selective androgen receptor agonist dihydrotestosterone (DHT) on cultures of stromal cells derived from BPH patients (hBPH). Histological analysis of inflammatory infiltrates in prostatectomy specimens from a cohort of BPH patients and correlation with serum testosterone level was performed. Even after adjusting for confounding factors, hypogonadism was associated with a fivefold increased risk of intraprostatic inflammation, which was also more severe than that observed in eugonadal BPH patients. Triggering hBPH cells by inflammatory stimuli (tumor necrosis factor α, lipopolysaccharide, or CD4+T cells) induced abundant secretion of inflammatory/growth factors (interleukin 6 (IL6), IL8, and basic fibroblast growth factor (bFGF)). Co-culture of CD4+T cells with hBPH cells induced secretion of Th1 inducer (IL12), Th1-recruiting chemokine (interferon γ inducible protein 10, IP10), and Th2 (IL9)- and Th17 (IL17)-specific cytokines. Pretreatment with DHT inhibited NF-κB activation and suppressed secretion of several inflammatory/growth factors, with the most pronounced effects on IL8, IL6, and bFGF. Reduced inflammatory cytokine production by testosterone cells, an increase in IL10, and a significant reduction of testosterone cells proliferation suggested that DHT exerted a broad antiinflammatory effect on testosterone cells. In conclusion, our data demonstrate that DHT exerts an immune regulatory role on human prostatic stromal cells, inhibiting their potential to actively induce and/or sustain autoimmune and inflammatory responses.
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Preclinical studies have demonstrated that prostate inflammation and tissue remodeling are exacerbated by hypogonadism and prevented by testosterone supplementation. We now investigated whether, in humans, hypogonadism was associated with more severe BPH inflammation and the in vitro effect of the selective androgen receptor agonist dihydrotestosterone (DHT) on cultures of stromal cells derived from BPH patients (hBPH). Histological analysis of inflammatory infiltrates in prostatectomy specimens from a cohort of BPH patients and correlation with serum testosterone level was performed. Even after adjusting for confounding factors, hypogonadism was associated with a fivefold increased risk of intraprostatic inflammation, which was also more severe than that observed in eugonadal BPH patients. Triggering hBPH cells by inflammatory stimuli (tumor necrosis factor α, lipopolysaccharide, or CD4+T cells) induced abundant secretion of inflammatory/growth factors (interleukin 6 (IL6), IL8, and basic fibroblast growth factor (bFGF)). Co-culture of CD4+T cells with hBPH cells induced secretion of Th1 inducer (IL12), Th1-recruiting chemokine (interferon γ inducible protein 10, IP10), and Th2 (IL9)- and Th17 (IL17)-specific cytokines. Pretreatment with DHT inhibited NF-κB activation and suppressed secretion of several inflammatory/growth factors, with the most pronounced effects on IL8, IL6, and bFGF. Reduced inflammatory cytokine production by testosterone cells, an increase in IL10, and a significant reduction of testosterone cells proliferation suggested that DHT exerted a broad antiinflammatory effect on testosterone cells. 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Preclinical studies have demonstrated that prostate inflammation and tissue remodeling are exacerbated by hypogonadism and prevented by testosterone supplementation. We now investigated whether, in humans, hypogonadism was associated with more severe BPH inflammation and the in vitro effect of the selective androgen receptor agonist dihydrotestosterone (DHT) on cultures of stromal cells derived from BPH patients (hBPH). Histological analysis of inflammatory infiltrates in prostatectomy specimens from a cohort of BPH patients and correlation with serum testosterone level was performed. Even after adjusting for confounding factors, hypogonadism was associated with a fivefold increased risk of intraprostatic inflammation, which was also more severe than that observed in eugonadal BPH patients. Triggering hBPH cells by inflammatory stimuli (tumor necrosis factor α, lipopolysaccharide, or CD4+T cells) induced abundant secretion of inflammatory/growth factors (interleukin 6 (IL6), IL8, and basic fibroblast growth factor (bFGF)). Co-culture of CD4+T cells with hBPH cells induced secretion of Th1 inducer (IL12), Th1-recruiting chemokine (interferon γ inducible protein 10, IP10), and Th2 (IL9)- and Th17 (IL17)-specific cytokines. Pretreatment with DHT inhibited NF-κB activation and suppressed secretion of several inflammatory/growth factors, with the most pronounced effects on IL8, IL6, and bFGF. Reduced inflammatory cytokine production by testosterone cells, an increase in IL10, and a significant reduction of testosterone cells proliferation suggested that DHT exerted a broad antiinflammatory effect on testosterone cells. 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Preclinical studies have demonstrated that prostate inflammation and tissue remodeling are exacerbated by hypogonadism and prevented by testosterone supplementation. We now investigated whether, in humans, hypogonadism was associated with more severe BPH inflammation and the in vitro effect of the selective androgen receptor agonist dihydrotestosterone (DHT) on cultures of stromal cells derived from BPH patients (hBPH). Histological analysis of inflammatory infiltrates in prostatectomy specimens from a cohort of BPH patients and correlation with serum testosterone level was performed. Even after adjusting for confounding factors, hypogonadism was associated with a fivefold increased risk of intraprostatic inflammation, which was also more severe than that observed in eugonadal BPH patients. Triggering hBPH cells by inflammatory stimuli (tumor necrosis factor α, lipopolysaccharide, or CD4+T cells) induced abundant secretion of inflammatory/growth factors (interleukin 6 (IL6), IL8, and basic fibroblast growth factor (bFGF)). Co-culture of CD4+T cells with hBPH cells induced secretion of Th1 inducer (IL12), Th1-recruiting chemokine (interferon γ inducible protein 10, IP10), and Th2 (IL9)- and Th17 (IL17)-specific cytokines. Pretreatment with DHT inhibited NF-κB activation and suppressed secretion of several inflammatory/growth factors, with the most pronounced effects on IL8, IL6, and bFGF. Reduced inflammatory cytokine production by testosterone cells, an increase in IL10, and a significant reduction of testosterone cells proliferation suggested that DHT exerted a broad antiinflammatory effect on testosterone cells. In conclusion, our data demonstrate that DHT exerts an immune regulatory role on human prostatic stromal cells, inhibiting their potential to actively induce and/or sustain autoimmune and inflammatory responses.</abstract><cop>Bristol</cop><pub>BioScientifica</pub><pmid>22562653</pmid><doi>10.1530/JOE-12-0142</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record>
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subjects Aged
Aged, 80 and over
Androgens - pharmacology
Biological and medical sciences
CD4-Positive T-Lymphocytes - drug effects
CD4-Positive T-Lymphocytes - metabolism
Cell Proliferation - drug effects
Cells, Cultured
Coculture Techniques
Cohort Studies
Cyclooxygenase 2 - genetics
Cytokines - metabolism
Dihydrotestosterone - pharmacology
Fundamental and applied biological sciences. Psychology
Gene Expression - drug effects
Gynecology. Andrology. Obstetrics
Humans
Inflammation Mediators - metabolism
Intercellular Signaling Peptides and Proteins - metabolism
Lymphocyte Activation - drug effects
Male
Male genital diseases
Medical sciences
Microscopy, Fluorescence
Middle Aged
Nephrology. Urinary tract diseases
Prostatic Hyperplasia - blood
Prostatic Hyperplasia - metabolism
Prostatic Hyperplasia - pathology
Receptors, Androgen - metabolism
Regular papers
Testosterone - blood
Testosterone - metabolism
Transcription Factor RelA - metabolism
Tumor Necrosis Factor-alpha - pharmacology
Tumors
Tumors of the urinary system
Urinary tract. Prostate gland
Vertebrates: endocrinology
title Antiinflammatory effect of androgen receptor activation in human benign prostatic hyperplasia cells
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