| Apoptosis in the osteonecrosis of the femoral head. | |
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MedLine Citation:
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PMID: 21119943 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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BACKGROUND: Osteonecrosis of the femoral head is classified into idiopathic and secondary forms. A number of etiological factors in the development of osteonecrosis have been suggested but the biological mechanisms are still unclear. Recently, some reports suggested that the apoptosis is closely related to osteonecrosis of the femoral head. Therefore, this study examined the expression of apoptosis in osteonecrosis of the femoral head. METHODS: Of the patients diagnosed preoperatively with osteonecrosis and underwent total hip replacement arthroplasty between August 2004 and July 2005, 58 patients (58 hips) were available for this study. Their diagnoses were confirmed by the postoperative pathology findings. Tissue samples of the femoral head sections were terminal deoxynucleotydyl transferase mediated dUTP nick-end labeling (TUNEL) stained using an in situ cell death detection POD kit. The number of total and TUNEL-positive osteocytes, and the average ratio of TUNEL-positive cells were calculated and analyzed according to the cause. RESULTS: Osteonecrosis was steroid-induced in 8 cases (13.8%), alcohol-induced in 29 cases (50%), post-traumatic in 6 cases (10.3%) and idiopathic in 15 cases (25.9%). The percentage of TUNEL-positive osteocytes was high in patients with steroid- and alcohol-induced osteonecrosis of the femoral head but low in patients with post-traumatic and idiopathic osteonecrosis. The difference in the percentage of TUNEL-positive osteocytes between these groups was significant (p < 0.05). CONCLUSIONS: Apoptosis might play an important role in the pathogenesis of osteonecrosis of the femoral head induced by steroid and alcohol. These findings highlight a need for further research into the role of apoptosis in the development of osteonecrosis of the femoral head. |
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Authors:
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Yoon-Seok Youm; Soo-Youn Lee; Soo-Ho Lee |
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Publication Detail:
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Type: Journal Article Date: 2010-11-05 |
Journal Detail:
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Title: Clinics in orthopedic surgery Volume: 2 ISSN: 2005-4408 ISO Abbreviation: Clin Orthop Surg Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-12-01 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101505087 Medline TA: Clin Orthop Surg Country: Korea (South) |
Other Details:
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Languages: eng Pagination: 250-5 Citation Subset: IM |
Affiliation:
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Department of Orthopedic Surgery, Ulsan University Hospital, Ulsan, Korea. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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