PMID- 8197848 OWN - NLM STAT- MEDLINE DCOM- 19940624 LR - 20190821 IS - 0001-6470 (Print) IS - 0001-6470 (Linking) VI - 65 IP - 2 DP - 1994 Apr TI - T-lymphocytes are not necessary for particulate polyethylene-induced macrophage recruitment. Histologic studies of the rat tibia. PG - 157-60 AB - Immunological processes involving T-lymphocytes have been implicated in the mechanisms of aseptic loosening of joint endoprostheses. We report the histological reaction of bone to phagocytosable particles of high-density polyethylene (HDPE) in normal and T-cell deficient rats. A bolus of 3 x 10(7) polyethylene particles averaging 4.7 microns in size, mixed in 0.1 mL of sodium hyaluronate, was injected into the right proximal tibia of 10 normal and 10 T-cell deficient (nude) Rowett rats from the same litter. The left control side was injected with sodium hyaluronate alone. The animals were killed after 6 weeks. Transverse paraffin-embedded sections stained with hematoxylin and eosin were made of the implant area. On the control side, there was normal bone marrow without evidence of foreign body reaction. On the HDPE side, in both normal and T-cell deficient rats, macrophages were found to surround and engulf the particles, with no differences in the histological reactions. We conclude that T-lymphocytes are not necessary for the recruitment of macrophages to sites in which phagocytosable particles of HDPE have been implanted. FAU - Goodman, S AU - Goodman S AD - Department of Orthopedics, University of Lund, Sweden. FAU - Wang, J S AU - Wang JS FAU - Regula, D AU - Regula D FAU - Aspenberg, P AU - Aspenberg P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Acta Orthop Scand JT - Acta orthopaedica Scandinavica JID - 0370352 RN - 0 (Biocompatible Materials) RN - 0 (Polyethylenes) SB - IM MH - Animals MH - *Biocompatible Materials MH - Cell Movement/immunology MH - Foreign-Body Reaction/etiology/*immunology/*pathology MH - Joint Prosthesis MH - Macrophages/*immunology MH - Polyethylenes/*adverse effects MH - Prostheses and Implants/adverse effects MH - Prosthesis Failure MH - Rats MH - Rats, Nude MH - T-Lymphocytes/*immunology MH - Tibia/*pathology EDAT- 1994/04/01 00:00 MHDA- 1994/04/01 00:01 CRDT- 1994/04/01 00:00 PHST- 1994/04/01 00:00 [pubmed] PHST- 1994/04/01 00:01 [medline] PHST- 1994/04/01 00:00 [entrez] AID - 10.3109/17453679408995425 [doi] PST - ppublish SO - Acta Orthop Scand. 1994 Apr;65(2):157-60. doi: 10.3109/17453679408995425.