Effects of estradiol and progesterone on the proinflammatory cytokine production by mononuclear cells from patients with chronic hepatitis C

World J Gastroenterol. 2008 Apr 14;14(14):2200-7. doi: 10.3748/wjg.14.2200.

Abstract

Aim: To investigate the effects of estradiol (E2) and progesterone on the unstimulated and oxidative stress-stimulated production of tumor necrosis factor (TNF)-alpha, interleukin (IL)-1beta, IL-8, and macrophage chemotactic protein (MCP)-1 by peripheral blood mononuclear cells (PBMCs) from patients with chronic hepatitis C and healthy controls.

Methods: The PBMCs were separated from age-matched 72 males and 71 females with and without chronic hepatitis C, who were divided into two groups based on a mean menopausal age of 50 years. Oxidative stress was induced by hydrogen peroxide in the cells incubated in serum-free media. Cytokines in the culture supernatant were measured by an enzyme-linked immunosorbent assay.

Results: The highest levels of the spontaneous production of TNF-alpha, IL-1beta, IL-8, and MCP-1 by the unstimulated PBMCs were in the older male patients with chronic hepatitis C and the lowest levels were in the pre-menopausal female healthy controls. E2 inhibited the cytokine production by the unstimulated PBMCs from the older male and post-menopausal female patients, which was further stimulated by progesterone. The exposure to hydrogen peroxide in the PBMCs from the younger male and pre-menopausal female healthy subjects induced the production of cytokines. The change rates of the hydrogen peroxide-stimulated cytokine production were suppressed by E2 and enhanced by progesterone.

Conclusion: These findings suggest that E2 may play a favorable role in the course of persistent liver injury by preventing the accumulation of monocytes-macrophages and by inhibiting proinflammatory cytokine production, whereas progesterone may counteract the favorable E2 effects.

MeSH terms

  • Aged
  • Case-Control Studies
  • Cytokines / metabolism*
  • Estradiol / pharmacology*
  • Female
  • Hepatitis C, Chronic / blood
  • Hepatitis C, Chronic / metabolism*
  • Humans
  • Inflammation
  • Leukocytes, Mononuclear / metabolism*
  • Male
  • Middle Aged
  • Models, Biological
  • Postmenopause
  • Premenopause
  • Progesterone / pharmacology*

Substances

  • Cytokines
  • Progesterone
  • Estradiol