Document 0090 DOCN M9590090 TI Apoptosis: molecular mechanisms and implications for human disease. DT 9509 AU Orrenius S; Institute of Environmental Medicine, Karolinska Institutet,; Stockholm, Sweden. SO J Intern Med. 1995 Jun;237(6):529-36. Unique Identifier : AIDSLINE MED/95301987 AB Apoptosis is a highly regulated process of cell death with characteristic morphological changes that are distinct from necrosis. The biochemical machinery responsible for apoptotic cell death appears to be constitutively expressed in most, if not all, cells and can be triggered by a variety of signals, including sustained increases in the intracellular Ca2+ level. Apoptosis is the main mechanism of cell deletion during development, normal cell turnover, hormone-induced tissue atrophy, and pathological processes such as T-cell depletion in HIV/AIDS and neurodegenerative disease. The aim of this review is to briefly summarize current knowledge of the molecular mechanisms of apoptosis and its role in human disease. DE Apoptosis/*PHYSIOLOGY Disease/*ETIOLOGY Human JOURNAL ARTICLE REVIEW REVIEW, TUTORIAL SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).