PURPOSE: To investigate the effect of graft site and gonadotrophins administration on the number and survival rate of follicles of canine ovarian grafts transplanted to NOD-severe combined immune deficiency (SCID) mice. METHODS: Fresh ovarian cortex slices obtained from immature bitches were grafted subcutaneously (SC), under kidney capsule (KC) or into ovarian bursa (OB) in NOD-SCID mice. Two months after surgery, the mice allocated into non-treated and treated gonadotrophins groups that injected with porcine follicle stimulating hormone during 7 days and human chorionic gonadotrophin 48 h later. Ovarian grafts were collected after 10 h of last injection and processed for histology. RESULTS: The number of transitional and preantral follicles under KC and into OB was significantly higher in gonadotrophins-treated mice than those who received saline. Furthermore, the survival rates of primary, transitional and preantral follicles under KC and into OB grafts were significantly higher than those placed SC in the treated gonadotrophins group, and in the non-treated gonadotrophins group; the proportion of primary and preantral follicle survival was significantly higher under KC and into OB than SC grafts. CONCLUSIONS: In canine ovarian xenografting, administration of gonadotrophin could be effective for improvement of survival of transplanted ovary. Furthermore, the grafting into OB appeared to be better than grafting under KC, which in turn is better than SC.
PURPOSE: To investigate the effect of graft site and gonadotrophins administration on the number and survival rate of follicles of canine ovarian grafts transplanted to NOD-severe combined immune deficiency (SCID) mice. METHODS: Fresh ovarian cortex slices obtained from immature bitches were grafted subcutaneously (SC), under kidney capsule (KC) or into ovarian bursa (OB) in NOD-SCID mice. Two months after surgery, the mice allocated into non-treated and treated gonadotrophins groups that injected with porcine follicle stimulating hormone during 7 days and human chorionic gonadotrophin 48 h later. Ovarian grafts were collected after 10 h of last injection and processed for histology. RESULTS: The number of transitional and preantral follicles under KC and into OB was significantly higher in gonadotrophins-treated mice than those who received saline. Furthermore, the survival rates of primary, transitional and preantral follicles under KC and into OB grafts were significantly higher than those placed SC in the treated gonadotrophins group, and in the non-treated gonadotrophins group; the proportion of primary and preantral follicle survival was significantly higher under KC and into OB than SC grafts. CONCLUSIONS: In canine ovarian xenografting, administration of gonadotrophin could be effective for improvement of survival of transplanted ovary. Furthermore, the grafting into OB appeared to be better than grafting under KC, which in turn is better than SC.
Authors: S Yamamoto; I Konishi; Y Tsuruta; K Nanbu; M Mandai; H Kuroda; K Matsushita; A A Hamid; Y Yura; T Mori Journal: Gynecol Endocrinol Date: 1997-12 Impact factor: 2.260
Authors: K T Gunasena; J R Lakey; P M Villines; M Bush; C Raath; E S Critser; L E McGann; J K Critser Journal: Anim Reprod Sci Date: 1998-10 Impact factor: 2.145