• Title/Summary/Keyword: reproductive medicine

Search Result 3,733, Processing Time 0.039 seconds

A successful pregnancy using completely immotile but viable frozen-thawed spermatozoa selected by laser

  • Chen, Huanhua;Feng, Guixue;Zhang, Bo;Zhou, Hong;Shu, Jinhui;Gan, Xianyou
    • Clinical and Experimental Reproductive Medicine
    • /
    • v.44 no.1
    • /
    • pp.52-55
    • /
    • 2017

  • The aim of this study was to report a successful pregnancy using completely immotile frozen-thawed spermatozoa selected by laser. A single laser shot was used to detect the presence of viable immotile spermatozoa in fresh and frozen-thawed testicular spermatozoa. The viability rate was 55.8% after the laser detection, and cryopreservation was carried out immediately. The thawing test was performed on the day of oocyte pick-up, and no motile sperm were observed after extending the culture for another 4 hours, while a survival rate of 39.8% was detected using the laser. In all, five mature oocytes were injected, resulting in four cases of normal fertilization (80%) on day 1. Further, two high-quality day 3 embryos were transferred, which resulted in a singleton pregnancy. Our study demonstrates that completely immotile spermatozoa are worth cryopreserving for further intracytoplasmic sperm injection, which provides a new insight into male fertility preservation in cases of completely immotile spermatozoa.

  • https://doi.org/10.5653/cerm.2017.44.1.52 인용 PDF KSCI

Comparison of assisted reproductive technology outcomes in infertile women with polycystic ovary syndrome: In vitro maturation, GnRH agonist, and GnRH antagonist cycles

  • Choi, Min Hye;Lee, Sun Hee;Kim, Hye Ok;Cha, Sun Hwa;Kim, Jin Young;Yang, Kwang Moon;Song, In Ok;Koong, Mi Kyoung;Kang, Inn Soo;Park, Chan Woo
    • Clinical and Experimental Reproductive Medicine
    • /
    • v.39 no.4
    • /
    • pp.166-171
    • /
    • 2012

  • Objective: We compared the assisted reproductive technology (ART) outcomes among infertile women with polycystic ovary syndrome (PCOS) treated with IVM, conventional IVF, GnRH agonist, and GnRH antagonist cycles. Methods: The prospective study included a total of 67 cycles in 61 infertile women with PCOS. The women with PCOS were randomized into three IVF protocols: IVM/IVF with FSH and hCG priming with immature oocyte retrieval 38 hours later (group A, 14 cycles), GnRH agonist long protocol (group B, 14 cycles), and GnRH antagonist multi-dose flexible protocol (group C, 39 cycles). IVF outcomes, such as clinical pregnancy rate (CPR), implantation rate (IR), miscarriage rate (MR), and live birth rate (LBR), were compared among the three groups. Results: Age, BMI, and basal FSH and LH levels did not differ among the three groups. The number of retrieved oocytes and 2 pronucleus embryos was significantly lower in group A compared with groups B and C. The CPR, IR, MR, and LBR per embryo transfer showed no differences among the three groups. There was no incidence of ovarian hyperstimulation syndrome in group A. Conclusion: The IR, MR, and LBR in the IVM cycles were comparable to those of the GnRH agonist and GnRH antagonist cycles. The IVM protocol, FSH and hCG priming with oocyte retrieval 38 hours later, is an effective ART option that is comparable with conventional IVF for infertile women with PCOS.

  • https://doi.org/10.5653/cerm.2012.39.4.166 인용 PDF KSCI

Reproductive Management with Ultrasound Scanner-monitoring System for a High-yielding Commercial Dairy Herd Reared under Stanchion Management Style

  • Takagi, M.;Yamagishi, N.;Lee, I.H.;Oboshi, K.;Tsuno, M.;Wijayagunawardane, M.P.B.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.18 no.7
    • /
    • pp.949-956
    • /
    • 2005

  • The weekly ultrasound scanner (US) observations of reproductive organs in a commercial dairy herd with the popular stanchion style management were conducted for over 26 months. Based on reproductive records, the following were evaluated: 1) the effect of postpartum period commencement of US monitoring on herd reproductive efficacy, and 2) the effectiveness of a US monitoring-based diagnosis and subsequent treatments of reproductive disorders on postpartum reproductive efficiency. The reproductive parameters of cows, which were subjected to US monitoring between Days 30-40 (Day 0 = day of parturition), Days 41-50, Days 51-60, and above Day 61, were compared. The reproductive parameters of cows diagnosed as having reproductive disorders (RD) with US monitoring before or after the first artificial insemination (AI) were also compared. It was found that the day of commencement of US monitoring in cows diagnosed with and without RD significantly affected the period towards the first AI and the open period. In particular, cystic follicles and anoestrus detected either before or after the first AI significantly affected herd reproductive efficiency. The implementation of US monitoring improved reproductive efficiency by reducing the open period and increasing the number of milking cows in the herd. The results of this field trial indicate that the postpartum reproductive management of dairy cows with the use of the US monitoring system is one strategy to improve reproductive efficiency, especially in a high-yielding dairy herd reared stanchion management style.

  • https://doi.org/10.5713/ajas.2005.949 인용 PDF KSCI