PMID- 12703549 OWN - NLM STAT- MEDLINE DCOM- 20031119 LR - 20191025 IS - 0914-9465 (Print) IS - 0914-9465 (Linking) VI - 66 IP - 1 DP - 2003 Mar TI - Germ cell apoptosis and its molecular trigger in mouse testes. PG - 1-16 AB - Germ cell apoptosis is very common during various stages of mammalian testicular development. However, our understanding of the mechanisms underlying male germ cell apoptosis is still limited. This review firstly covers the general features of germ cell death in normal testes of fetal, neonatal, and adult mice from electron microscopy (EM) and terminal dUTP nick-end labeling (TUNEL) staining. The issue of whether the Fas and Fas ligand (FasL) system and/or the Bax and Bcl-2 system is involved in the induction of germ cell apoptosis in normal and damaged testes will then be addressed, including a special consideration of the ischemia-reperfusion model, the endocrine disruptor-treated model, and others. Finally, this review will propose that the process of normal spermatogenesis seems skillfull in taking advantage of apoptotic processes of germ cells and that different molecular pathways may be triggered to induce male germ cell apoptosis, depending upon the physiological and pathological states of germ cells. FAU - Koji, Takehiko AU - Koji T AD - Department of Histology and Cell Biology, Nagasaki University School of Medicine, Nagasaki, Japan. tkoji@net.nagasaki-u.ac.jp FAU - Hishikawa, Yoshitaka AU - Hishikawa Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Japan TA - Arch Histol Cytol JT - Archives of histology and cytology JID - 8806082 SB - IM MH - Animals MH - Apoptosis/*physiology MH - Male MH - Mice MH - Spermatids/*cytology MH - Testis/*cytology/*embryology/physiology EDAT- 2003/04/22 05:00 MHDA- 2003/12/03 05:00 CRDT- 2003/04/22 05:00 PHST- 2003/04/22 05:00 [pubmed] PHST- 2003/12/03 05:00 [medline] PHST- 2003/04/22 05:00 [entrez] AID - 10.1679/aohc.66.1 [doi] PST - ppublish SO - Arch Histol Cytol. 2003 Mar;66(1):1-16. doi: 10.1679/aohc.66.1.