OBJECTIVE: To detect the immunoreaction after osteoblast xenotransplantation and to investigate the possibility of heterogenic osteocyte transplantation and tissue engineered bone reconstruction. METHODS: @entity35 osteoblasts were isolated by two-part bony digestion/elements in culturing, and incubated in vitro at 37 degrees C, 5% @entity544 for 5 days until they multiplied and formed a monolayer on the bottom of dish. Twenty-eight @entity95 were divided into 3 groups. Autograft of osteoblasts(group A), xenograft of osteoblasts(group B) and normal saline(group C) were implanted into the rectus abdominus muscle. The immunological and histological observations were performed after 1, 2, 4 and 8 weeks of transplantation. RESULTS: Cultured cells reached confluence within 5 days and was identified as osteoblasts by ALP staining and Bon kossa staining. The result of host versus graft reaction was negative. In group B, specific antibody reaction was detected 2 weeks and 4 weeks after transplantation. Cell mediated @entity137 was detected after 2 weeks, reached the peak value 4 weeks later, and then began to decline 8 weeks later. HE staining showed mass inflammatory cells and no @entity2736 after 8 weeks. CONCLUSION: Heterogenic osteoblast transplantation will lead to an obvious change in host humoral and cellular immunity and lost the ability of bone formation. So, it can not be used for the reliable cell sources for osteocyte transplantation or tissue-engineering bone reconstruction.

[Immunological research of XXXX osteoblast xenotransplantation].

@entity137 :: ('MESH:D064420', 'Disease') :: ['cytotoxicity'] @entity95 :: ('9986', 'Species') :: ['rabbits'] @entity2736 :: ('MESH:D009999', 'Disease') :: ['ectopic ossification'] @entity544 :: ('MESH:D002245', 'Chemical') :: ['carbon dioxide'] @entity35 :: ('10116', 'Species') :: ['Rat']
@entity35 :: (10116,Species) :: ['rat']
