[IL-6 and TNF-alpha levels in oviductal epithelial cells culture after escherichia coli LPS stimulation].

UNLABELLED: The aim of the study was to determine wether Gram-negative bacterial cell membrane lipopolysaccharides (endotoxine) can change the IL-6 and TNF-alpha cytokine concentration synthetized by fallopian tube endothelial cells. For the study 5 normal fallopian tubes from females at their reproductive age who underwent total hysterectomy due to uterine myoma were used. The fallopian tubes specimens (endothelial tissue) 2 mm2 fixed in 0.5 ml DMEM/HAM F-12 (GibcoBRL) solution with 15% FCS, Gentamycin, Fungizone, ITS (GibcoBRL) were incubated at 37 degrees C with 5% CO2. The explants were stimulated by Escherichia coli lipopolysaccharide (LPS) at ascending concentrations 1 ng/mL, 10 ng/mL and 100 ng LPS/mL incubation media. Tissue specimen incubated in a media without LPS were used for control test. IL-6 activity in the supernatants were determined by Van Sinc method, TNF-alpha activity were determined against WEHI-164.13. cells according to Espevik and Nisser-Mayer. The presence of TNF-alpha and IL-6 were confirmed in all the supernatants of the incubated fallopian tubes explants. The LPS stimulation caused a concentration increase in both cytokines. The maximum cytokine concentration level was observed in the incubation stimulated at 1 and 10 ng LPS/mL incubation media. The use of the highest LPS concentration retarded the cytokine production.

CONCLUSION: The TNF-alpha and IL-6 cytokines dose-dependent production is caused by the fallopian tubes LPS stimulation.