PMID- 14506926 OWN - NLM STAT- MEDLINE DCOM- 20040309 LR - 20190922 IS - 1046-7408 (Print) IS - 1046-7408 (Linking) VI - 50 IP - 1 DP - 2003 Jul TI - Deficient expression of tumor necrosis factor receptor type 2 in the endometrium of women with endometriosis. PG - 33-40 AB - PROBLEM: Tumor necrosis factor-alpha (TNF-alpha) is secreted mainly during the menstrual phase and has been suggested to play a role in induction of apoptosis in endometrial cells and menstrual shedding. TNF-alpha receptor type 2 (TNF-RII) is believed to play a central role in TNFalpha-mediated cytotoxic, mitogenic, anti-proliferative and apoptotic effects. The aim of this study was to assess whether TNF-RII maybe expressed differentially in the endometrium of women with different degrees of endometriosis. METHOD OF STUDY: TNF-RII expression in the endometrial tissue of women with and without endometriosis was investigated by immunohistochemical techniques and in situ hybridization. RESULTS: In histological sections, we observed TNF-RII mRNA and the corresponding protein localized mainly in endometrial glandular cells, with only very faint immunostaining in the surrounding stromal cells. Statistical analysis of our data showed a significant decrease in protein and mRNA expression of TNF-RII in endometrial glandular cells of patients with stages I and II endometriosis compared to normal subjects. TNF-RII expression was also found to decrease significantly in the secretory phase of the menstrual cycle in women with early endometriosis stages (I and II). CONCLUSIONS: In view of the relevant role of TNF-RII in the modulation of the inflammatory and the proapoptotic effects of TNFalpha, deficient expression of TNF-RII mRNA in the endometrium of women at the earliest stages of endometriosis may play a significant role in the pathophysiology of this disease. FAU - Kharfi, Abdelaziz AU - Kharfi A AD - Centre de Recherche, Hopital Saint-Francois d'Assise, Centre Hospitalier Universitaire de Quebec, Faculte de Medecine, Universite Laval, Quebec, Canada. FAU - Labelle, Yves AU - Labelle Y FAU - Mailloux, Jacques AU - Mailloux J FAU - Akoum, Ali AU - Akoum A LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Denmark TA - Am J Reprod Immunol JT - American journal of reproductive immunology (New York, N.Y. : 1989) JID - 8912860 RN - 0 (Antigens, CD) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Tumor Necrosis Factor) RN - 0 (Receptors, Tumor Necrosis Factor, Type II) SB - IM MH - Adult MH - Antigens, CD/genetics/*metabolism MH - Endometriosis/*metabolism/pathology MH - Endometrium/chemistry/*metabolism/pathology MH - Female MH - Gene Expression MH - Humans MH - Immunohistochemistry/methods MH - In Situ Hybridization, Fluorescence/methods MH - RNA, Messenger/metabolism MH - Receptors, Tumor Necrosis Factor/genetics/*metabolism MH - Receptors, Tumor Necrosis Factor, Type II MH - U937 Cells EDAT- 2003/09/26 05:00 MHDA- 2004/03/10 05:00 CRDT- 2003/09/26 05:00 PHST- 2003/09/26 05:00 [pubmed] PHST- 2004/03/10 05:00 [medline] PHST- 2003/09/26 05:00 [entrez] AID - 10.1034/j.1600-0897.2003.00058.x [doi] PST - ppublish SO - Am J Reprod Immunol. 2003 Jul;50(1):33-40. doi: 10.1034/j.1600-0897.2003.00058.x.