[Expression of tumor necrosis factor-alpha (TNF-alpha) on peritoneal fluid mononuclear cells in women with endometriosis].
OBJECTIVE
Tumor necrosis factor-alpha (TNF-alpha) plays a key role in the processes underlying the development of pelvic endometriosis. TNF-alpha acts on target cells via two receptors: TNFR1(p55) and TNFR2(p75). Depending on cell type and its activation state, ligand binding to TNF-alpha may induce activation and proliferation of the cells or promote apoptosis. The aim of our study has been to evaluate the expression of TNFR1 and TNFR2 on peritoneal fluid macrophages and T lymphocytes derived from women with endometriosis.


METHODS
The study group consisted of 22 patients with endometriosis (stage I and II rAFS). 14 patients with benign, non-inflammatory ovarian tumors composed the reference group. Mononuclear cells have been isolated from peritoneal fluid, obtained during laparoscopy. The expression of TNFR1 and TNFR2 proteins has been evaluated by means of flow cytometry, using monoclonal antibodies against CD120a, CD120b, CD3 and CD14.


RESULTS
The percentage of peritoneal fluid macrophages revealing the expression of TNFR1 and TNFR2 proteins has been higher in patients with endometriosis, in comparison with control group (22.6+/-5.3% vs. 6.8+/-1,8%; p=0.03 and 29.3+/-2.3% vs. 8.8+/-1.8%; p=0.01, respectively). The percentage of T lymphocytes with the expression of TNFR1 and TNFR2 has been similar in endometriosis and control group.


CONCLUSIONS
Higher percentage of peritoneal fluid macrophages expressing TNFR1 and TNFR2 proteins in endometriosis suggests dependence of these cells on TNF-alpha stimulation. Changes in TNF receptors distribution on PF macrophages, but not lymphocyte, may play its role in the pathogenesis of endometriosis.
Gogacz
Marek
M
II Katedra i Klinika Ginekologii Akademii Medycznej im. Prof. Feliksa Skubiszewskiego w Lublinie, Lublin. gogacz@yahoo.com
Bogusiewicz
Michał
M
Putowski
Lechosław
L
Adamiak
Aneta
A
Wertel
Iwona
I
Jakowicki
Jerzy A
JA
Rechberger
Tomasz
T
D000328:Adult; D001202:Ascitic Fluid / Q000737:chemistry / Q000378:metabolism*; D016022:Case-Control Studies; D004715:Endometriosis / Q000378:metabolism* / Q000473:pathology; D005260:Female; D006801:Humans; D017737:Macrophages, Peritoneal / Q000378:metabolism*; D008875:Middle Aged; D047888:Receptors, Tumor Necrosis Factor, Type I / Q000378:metabolism*; D047889:Receptors, Tumor Necrosis Factor, Type II / Q000378:metabolism*; D012016:Reference Values; D013601:T-Lymphocytes / Q000378:metabolism*; D016387:Women's Health
D047888:Receptors, Tumor Necrosis Factor, Type I; D047889:Receptors, Tumor Necrosis Factor, Type II