TY - JOUR ID - TI - In Vitro Fertilization of Immature oocytes by Testicular Sperm: Animal Model for Azoospermic Infertile Patients AU - Saeeda A. M. Alanssari PY - 2007 VL - 49 IS - 4 SP - 394 EP - 399 JO - Journal of the Faculty of Medicine Baghdad مجلة كلية الطب SN - 00419419 24108057 AB - Background: Men with azoospermia require testicular and epididymal sperm aspiration for intracytoplasmic sperm injection. Women over 37 years of age demonstrate an increase number of immature oocytes after induction of ovulation. The development of a technique for in vitro maturation (IVM) and fertilization (IVF) of the oocytes using testicular, epididymal and vassal sperm (TS, ES, VS, respectively) will be of therapeutic value for the treatment of azoospermic patients. Objectives: The goal of the study was to develop an animal model for the treatment of infertile couples with obstructive azoospermia and immature oocytes. Materials and Methods: Canine ovaries and testes were collected from a local animal clinic. Immature oocytes were retrieved from the ovaries and cultured in modified tissue culture medium (MTCM). The mature oocytes were in vitro fertilized by TS, ES, and VS. The normality of the fertilized oocytes was studied. Results: Sperm motility index was significantly higher (P<0.01) in sperm retrieved from the vas deference compared to ES and TS. The concentration of the sperm was significantly higher (P<0.05) in the testes compared to epididymis and vas deference while VS and ES normal morphology were significantly (p<0.01) better than TS. Viable oocyte percentage was significantly higher (P ER -