PMID- 9754895 OWN - NLM STAT- MEDLINE DCOM- 19981203 LR - 20091119 IS - 0392-9590 (Print) IS - 0392-9590 (Linking) VI - 17 IP - 2 DP - 1998 Jun TI - Restricted usage of T-cell receptor Valpha-Vbeta genes in infiltrating cells in the aortic tissue of a patient with atherosclerotic aortic aneurysm. PG - 89-92 AB - We report a rare case of an atherosclerotic aortic aneurysm with lymphocyte infiltration in which T-cell receptor (TCR) Valpha as well as Vbeta gene usage was restricted. Immunohistochemical studies showed that the infiltrating cells mainly consisted of macrophages, natural killer (NK) cells, cytotoxic T lymphocytes (CTLs) and T-helper (Th) cells, and that there were almost no infiltrating delta T lymphocytes, and human leukocyte antigen (HLA) class I and 65-kD heat-shock protein (HSP-65) was not strongly expressed in the aortic tissue. Although the immunohistochemical data were consistent with an ordinary atherosclerotic aortic aneurysm, in which TCR Valpha-Vbeta gene usage is known to be polyclonal, the restricted TCR gene usage suggests that a certain autoimmune mechanism was involved in the pathogenesis of this case similar to Takayasu's arteritis, in which massive infiltration of delta T lymphocytes and strong expression of HSP-65 in the aortic tissue are characteristic. FAU - Seko, Y AU - Seko Y AD - Third Department of Internal Medicine, University of Tokyo, Japan. FAU - Takahashi, N AU - Takahashi N FAU - Sato, O AU - Sato O FAU - Takagi, A AU - Takagi A FAU - Yagita, H AU - Yagita H FAU - Okumura, K AU - Okumura K FAU - Yazaki, Y AU - Yazaki Y LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Italy TA - Int Angiol JT - International angiology : a journal of the International Union of Angiology JID - 8402693 RN - 0 (Bacterial Proteins) RN - 0 (Chaperonin 60) RN - 0 (Receptors, Antigen, T-Cell, alpha-beta) RN - 0 (heat-shock protein 65, Mycobacterium) RN - EC 3.6.1.- (Chaperonins) SB - IM MH - Aged MH - Aged, 80 and over MH - Aortic Aneurysm, Thoracic/*immunology/pathology MH - Arteriosclerosis/*immunology/pathology MH - Bacterial Proteins/analysis MH - Chaperonin 60 MH - Chaperonins/analysis MH - Female MH - Humans MH - Immunohistochemistry MH - Macrophages/immunology MH - Receptors, Antigen, T-Cell, alpha-beta/*genetics MH - T-Lymphocytes/immunology EDAT- 1998/10/01 00:00 MHDA- 1998/10/01 00:01 CRDT- 1998/10/01 00:00 PHST- 1998/10/01 00:00 [pubmed] PHST- 1998/10/01 00:01 [medline] PHST- 1998/10/01 00:00 [entrez] PST - ppublish SO - Int Angiol. 1998 Jun;17(2):89-92.