본 연구는 한우의 난포낭종 및 황체낭종에서 세포자멸사 관련 유전자의 발현 변화를 조사함으로써 난소낭종과 세포자 멸사간의 관계를 정리하고자 한다. 마이크로어레이 분석 결과, 난포낭종에서 PIK3R2와 AKT1가 유의하게 증가하였고, 황체낭종에서는 증가되는 세포자멸사 관련 DEGs, TNF-RAF2, PRLR, FOXL2, STK4 및 COL4A3와 감소하는 DEGs, INHA, CIDEB, BCL10 및 FASLG가 포함되었다. 정량적 역전사 중합 효소

본 연구는 도축되는 소 난소의 효율적인 이용을 위해서 도축장으로부터 실험실로 운반되는 난소 수송 온도에 따른 체외 수정란 생산 효율을 조사하고자 실시되었다. 도축장의 HACCP 적용으로 도축장 출입이 불가능하므로 위탁하여 난소를 공급받게 되어 취급자의 부주의로 적절한 온도 유지가 되지 않는 경우가 많다. 특히 겨울철에는 더 많은 주의가 필요하다. 따라서 본 실험에서는 겨울철 난소수송 온도에 따라서 4처리 그룹, 즉 (T1), (T2), (T3) 그리고

The present study was carried out for the comparative study on the collection of bovine follicular oocytes by ultrasound-guided ovum pick-up(OPU) and slaughterhouse-derived (SHD) ovary aspiration and in vitro production of bovine embryos with the follicular oncytes in Korean native cows. Bovine follicular nocytes were observed with a 6.5 MHz convex-array ultrasound transducer designed for intravaginal use and the oocytes were collected with the aspiration equipment attached to the ultrasonograph. Bovine ovaries were collected and transported in phosphate buffered saline from the local slaughterhouse, the follicular oocytes were collected by the aspiration method. The collected follicular oocytes in good quality were matured, fertilized and cultured in the media. The total number of the visible follicles and the recovery rate of follicular oocytes were increased in ultrasonography following follicle stimulating hormone(FSH) treatment in Korean native cows. The mean recovery rate of oocytes was 66.2, 52.8 and 41.7% in the FSH-OPU, non-treatment-OPU and SHD ovaries, respectively. The mean number of recorved oocytes per cow were not significantly(P<0.05) different between the FSH-OPU(14.011.54) and SHD(17.1i6.21) groups, but the numbers in both groups were significantly(P<0.05) higher than the number in the non-treatment-OPU(3.71.57) group. The mean number of usable nocytes in Grade T /11 per ovary was 6.3, 4.8 and 1.3 in the cows of the SHD, FSH-OPU and non-treatment-OPU groups, respectively. The in vitro developmental rate to the blastocyst was not significantly different between the oocytes obtained via OPU(37.1%) and SHD(29.3%). Therefore, the ultrasound-guided OPU technique can be applied to the production of excellent embryos from the high-quality cows, and for the large scale production of in vitro bovine oocytes and embryos, the SHD ovary aspiration method is valuable.