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Published on: June 22, 2016
Flurbiprofen Inhibits Androgen Productions in Rat Immature Leydig Cells
Yiyan Wang1, Wenwen Zheng1, Yuanyuan Shan2
1Department of Anesthesiology , The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University , Wenzhou , Zhejiang 325027 , People's Republic of China.
Abstract:
Flurbiprofen is one of the nonsteroidal anti-inflammatory drugs. Whether flurbiprofen affects androgen biosynthesis in Leydig cells is still unknown. Immature Leydig cells (ILCs) isolated from 35-day-old male Sprague-Dawley rats were cultured with 0-100 μM flurbiprofen for 24 h and medium androgen levels and Leydig cell mRNA levels were measured. Immature Leydig cells were also incubated with 100 μM flurbiprofen for 3 h in combination with luteinizing hormone (LH), 8bromo-cAMP, 22R-OH-cholesterol, pregnenolone, progesterone, androstenedione, testosterone, and dihydrotestosterone, respectively, and medium androgen levels were measured. The ROS generation and apoptosis rate were also investigated. The direct effects of flurbiprofen on androgen biosynthetic and metabolizing enzyme activities were measured. Flurbiprofen significantly inhibited basal, LH, and 8bromo-cAMP stimulated androgen production at 10 and 100 μM. Further study demonstrated that flurbiprofen competitively inhibited rat and human testis 3β-hydroxysteroid dehydrogenase (HSD3B) activity with the half maximal inhibitory concentration (IC50) values of 0.95 μM for rat enzyme and 6.31 μM for human enzyme. In addition, flurbiprofen down-regulated the expression of Srd5a1 and Akr1c14 at 1, 10, and 100 μM. Flurbiprofen also down-regulated Lhcgr expression at 100 μM. Flurbiprofen at 10 and 100 μM increased ROS production and apoptosis rate of rat Leydig cells. In conclusion, flurbiprofen directly inhibits HSD3B activity and the expression levels of Srd5a1 and Akr1c14 in rat Leydig cells, thus leading to the reduction of androgen secretion.
Insights
Flurbiprofen, a nonsteroidal anti-inflammatory drug, inhibits androgen production in rat Leydig cells by directly reducing 3β-hydroxysteroid dehydrogenase activity and gene expression. This leads to decreased androgen secretion and increased cell apoptosis.
Area of Science:
- Endocrinology
- Reproductive Biology
- Pharmacology
Background:
- Leydig cells are crucial for testicular androgen biosynthesis.
- Nonsteroidal anti-inflammatory drugs (NSAIDs) effects on Leydig cell function are not fully understood.
- Flurbiprofen is a commonly used NSAID.
Purpose of the Study:
- To investigate the effects of flurbiprofen on androgen biosynthesis in immature rat Leydig cells.
- To determine the specific mechanisms by which flurbiprofen may impact Leydig cell function.
Main Methods:
- Immature rat Leydig cells were cultured with varying concentrations of flurbiprofen.
- Androgen levels, gene expression (HSD3B, Srd5a1, Akr1c14, Lhcgr), reactive oxygen species (ROS) generation, and apoptosis were measured.
- Direct enzyme activity assays for HSD3B were performed.
Main Results:
- Flurbiprofen significantly inhibited basal and stimulated androgen production.
- Flurbiprofen competitively inhibited rat and human HSD3B activity.
- Flurbiprofen down-regulated the expression of Srd5a1, Akr1c14, and Lhcgr.
- Flurbiprofen increased ROS production and Leydig cell apoptosis.
Conclusions:
- Flurbiprofen directly inhibits HSD3B activity and key gene expression in Leydig cells.
- Flurbiprofen reduces androgen secretion and induces oxidative stress and apoptosis in Leydig cells.
- These findings suggest potential adverse effects of flurbiprofen on male reproductive function.
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