To study the origin of interleukin 1 (IL-1) present in human follicular fluid we determined the percentage of macrophages (MO) and cells with HLA-DR antigen (DR+) present in 22 samples of human follicular fluid (FF) from women undergoing in vitro fertilization, and examined the release of IL-1β by cultures of purified human granulosa cells (GC). The number of red blood cells (RBC) in the crude preparation was taken as a measure of possible contamination with peripheral blood monocytes (assuming a ratio of one monocyte or MO per 104 RBC). For the evaluation of MO and DR+ cells percentages we employed an indirect immunofluorescence technique using specific monoclonal antibodies. Total cells from FF were purified by Ficoll-Hypaque density gradient centrifugation (δ = 1.076 g/l and GC were purified using a gradient δ = 1.065 g/l. This method reduced the contamination with MO to 0-1%. The spontaneous release of IL-1β was measured by ELISA, We found that FF contained 9.81 ± 1.47% of MO but only 7.85% were ovarian MO. In addition the total percentage of DR+ cells was 17.13 ± 2.35% but only 9.81% corresponded to MO. Therefore about 7.32% of DR+ cells could be GC. Then purified GC (104/0.2 ml/well) were cultured during 24 hours at 37°C in serum free medium (DMEM:F12). IL-1β levels were 84±17 pg/ml and these values were increased by 44% when GC were stimulated with FSH (200 ng/ml). These results suggest that GC produced IL-1β and that the synthesis of this cytokine might be regulated by hormones.
Documento: | Artículo |
Título: | Human granulosa cells express HLA-DR antigen and are capable of synthesizing interleukin-1 |
Autor: | Baranao, R.I.; Dain, L.; De Fried, E.P.; Rumi, L.S. |
Filiación: | Inst. Biologia/Medicina Experimental, Vta. de Obligado 2490, 1428 Buenos Aires, Argentina |
Palabras clave: | Granulosa cells; HLA-DR Antigen; Interleukin 1; Macrophages; chorionic gonadotropin; follitropin; HLA DR antigen; human menopausal gonadotropin; interleukin 1; leuprorelin; phytohemagglutinin; urofollitropin; adult; article; controlled study; female; gene expression; granulosa cell; human; human cell; macrophage; priority journal |
Año: | 1995 |
Volumen: | 27 |
Número: | 11 |
Página de inicio: | 495 |
Página de fin: | 498 |
DOI: | http://dx.doi.org/10.1055/s-2007-980010 |
Título revista: | Hormone and Metabolic Research |
Título revista abreviado: | HORM. METAB. RES. |
ISSN: | 00185043 |
CODEN: | HMMRA |
CAS: | chorionic gonadotropin, 9002-61-3; follitropin, 9002-68-0; human menopausal gonadotropin, 61489-71-2; leuprorelin, 53714-56-0, 74381-53-6; phytohemagglutinin, 9008-97-3; urofollitropin, 97048-13-0 |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00185043_v27_n11_p495_Baranao |