PMID- 10727280 OWN - NLM STAT- MEDLINE DCOM- 20000509 LR - 20190513 IS - 0006-3363 (Print) IS - 0006-3363 (Linking) VI - 62 IP - 4 DP - 2000 Apr TI - Human villous macrophage-conditioned media enhance human trophoblast growth and differentiation in vitro. PG - 1075-83 AB - In human chorionic villi, numerous macrophages, so-called Hofbauer cells, are located adjacent to trophoblasts. To determine the role of the macrophages in the proliferation and differentiation of trophoblasts, cytotrophoblast cells were cultured in serum-free culture-conditioned media of villous macrophages (VMCM), peritoneal macrophages (PMCM), and villous fibroblasts (VFCM). In VMCM, proliferation of cytotrophoblast cells was detected at 24 h by immunocytochemistry with Ki-67-antibody. A large number (P < 0.001) of multinucleated syncytia was formed in VMCM. In VMCM, cytotrophoblast cell fusion was completed by 96 h, which coincided with the peak of hCG secretion and initiation of human placental lactogen (hPL) release. Levels of hCG (P < 0.001) and hPL (P < 0. 001) secretion from syncytial cells were significantly higher in VMCM than in PMCM or in VFCM. Concentrations of macrophage colony-stimulating factor (M-CSF) and vascular endothelial growth factor (VEGF) analyzed by ELISA were greater in VMCM than in PMCM or in VFCM, whereas monocyte chemoattractant protein-1 (MCP-1) concentration was high in PMCM. The expression patterns of M-CSF, VEGF, and MCP-1 in villous macrophages and peritoneal macrophages by reverse transcriptase-polymerase chain reaction were similar to their secretion patterns. Thus, villous macrophages have a greater ability to stimulate hCG and hPL secretion than do peritoneal macrophages. This study suggests that macrophages within the villous stroma may stimulate the growth and differentiation of trophoblasts through their secreted substances. FAU - Khan, S AU - Khan S AD - Department of Obstetrics and Gynecology, Kumamoto University School of Medicine, Kumamoto-City 860-8556, Japan. FAU - Katabuchi, H AU - Katabuchi H FAU - Araki, M AU - Araki M FAU - Nishimura, R AU - Nishimura R FAU - Okamura, H AU - Okamura H LA - eng PT - Journal Article PL - United States TA - Biol Reprod JT - Biology of reproduction JID - 0207224 RN - 0 (Chemokine CCL2) RN - 0 (Chorionic Gonadotropin) RN - 0 (Culture Media, Conditioned) RN - 0 (DNA Primers) RN - 0 (Endothelial Growth Factors) RN - 0 (Lymphokines) RN - 0 (Vascular Endothelial Growth Factor A) RN - 0 (Vascular Endothelial Growth Factors) RN - 81627-83-0 (Macrophage Colony-Stimulating Factor) RN - 9035-54-5 (Placental Lactogen) SB - IM MH - Cell Differentiation/physiology MH - Chemokine CCL2/metabolism MH - Chorion/cytology MH - Chorionic Gonadotropin/metabolism MH - Culture Media, Conditioned MH - DNA Primers MH - Endothelial Growth Factors/metabolism MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Fibroblasts MH - Humans MH - Immunohistochemistry MH - Lymphokines/metabolism MH - Macrophage Colony-Stimulating Factor/metabolism MH - Macrophages/metabolism/*physiology MH - Macrophages, Peritoneal/physiology MH - Placental Lactogen/metabolism MH - Pregnancy MH - Radioimmunoassay MH - Reverse Transcriptase Polymerase Chain Reaction MH - Trophoblasts/metabolism/*physiology MH - Vascular Endothelial Growth Factor A MH - Vascular Endothelial Growth Factors EDAT- 2000/03/22 09:00 MHDA- 2000/05/16 09:00 CRDT- 2000/03/22 09:00 PHST- 2000/03/22 09:00 [pubmed] PHST- 2000/05/16 09:00 [medline] PHST- 2000/03/22 09:00 [entrez] AID - 10.1095/biolreprod62.4.1075 [doi] PST - ppublish SO - Biol Reprod. 2000 Apr;62(4):1075-83. doi: 10.1095/biolreprod62.4.1075.