Background： An oviduct-specific glycoprotein, OVGP1, is synthesized and secreted by non-ciliated epithelial cells of the mammalian oviduct which provides an essential milieu for reproductive functions. The present st...Background： An oviduct-specific glycoprotein, OVGP1, is synthesized and secreted by non-ciliated epithelial cells of the mammalian oviduct which provides an essential milieu for reproductive functions. The present study reports the effects of recombinant buffalo OVGP1 that lacks post-translational modifications, and native Buffalo OVGP1 isolated from oviductal tissue, on frozen-thawed sperm functions and in vitro embryo development.Results： The proportion of viable sperms was greater（P 〈 0.05） in the recombinant OVGP1-treated group compared to the native OVGP1-treated group at 2 h, 3 h, and 4 h of incubation. The proportion of motile sperms at3 h and 4 h of incubation; and membrane-intact sperms at 4 h was greater（P 〈 0.05） in the native OVGP1-treated group compared to the control and recombinant OVGP1-treated groups. The proportion of capacitated and acrosome-reacted sperms was greater（P 〈 0.05） in the native OVGP1-treated group compared to the recombinant OVGP1 group at 4 h. The rates of cleavage of embryos and their development to the blastocyst stage were greater（P 〈 0.05） in the presence of either native or recombinant OVGP1 in comparison to control at 10 μg/mL concentration as compared to 5 or 20 μg/mL.Conclusions： The study suggests that both native and recombinant OVGP1 impart a positive effect on various sperm features and in vitro embryo development. However, native OVGP1 was found to have a more pronounced effect in comparison to recombinant non-glycosylated OVGP1 on various sperm functions except viability. Hence,our current findings infer that glycosylation of OVGP1 might be essential in sustaining the sperm functions but not the in vitro embryo development.展开更多
Purpose: Can Cortisol Releasing Hormone (CRH) levels in follicular fluid predict outcomes following assisted reproductive treatment (ART) cycles? Methods: Prospective cohort study of 50 women undergoing in vitro ferti...Purpose: Can Cortisol Releasing Hormone (CRH) levels in follicular fluid predict outcomes following assisted reproductive treatment (ART) cycles? Methods: Prospective cohort study of 50 women undergoing in vitro fertilisation (IVF)/intra-cytoplasmic sperm injection (ICSI) cycles over a two month study period. All patients were treated on the long stimulation protocol;follicular fluid was aspirated and pooled for each patient. The samples were processed appropriately and assayed using CRH radioimmunoassay (RIA). Results: This study confirmed that CRH was present in follicular fluid. The average level detected was 173 ± 9 pg/mL (mean ± standard error of mean [SEM]). The data suggests a positive correlation of CRH follicular fluid levels greater than 145 pg/mL with successful ART outcomes. Conclusion: The data indicates a positive correlation between ART outcomes and the presence of follicular fluid CRH levels greater than 145 pg/mL. The results should be interpreted with caution due to the small sample size and pooling of follicular fluid per patient. Furthermore, the pooling of follicular fluid is not representative of CRH levels in an individual follicle, and thus, mature oocyte. This study serves as a reminder to what has previously been hypothesised.展开更多
Objective To determine efficacy of gonadotropin （Gn） co-treated with growth hormone （GH） on poor ovarian response （POR） patients undergoing in vitro fertiliza- tion/intracytoplasmic sperm injection （1VF/ICSI）....Objective To determine efficacy of gonadotropin （Gn） co-treated with growth hormone （GH） on poor ovarian response （POR） patients undergoing in vitro fertiliza- tion/intracytoplasmic sperm injection （1VF/ICSI）. Methods A total of 58 IVF/ICSI-embryo transfer （ET） cycles in POR patients were retrospectively identified. The POR criteria were defined by Bologna consensus. The cycles were divided into two groups： Gn co-treated with GH group （GH~ group, 25 cycles） and Gn only group （GH- group, 33 cycles）. Results of lVF/ICSI for these two groups were compared. Results The number of oocyte retrieved and the normal fertilization rate in the two groups were no difference （P〉O.05）. High-quality embryo rate and implantation rate in the GH＋ group were 39.6% and 38.5%, respectively, which were slightly higher than those in the GH group （35.9% and 25.0%）, but no difference was found on these two parameters （P〉0. 05）. Conclusion GH, to some extent, can improve the quality of embryo and the implantation rate. Whether GH co-therapy has a definite role in improving the outcome of POR patients still needs further evaluation.展开更多
基金funded by "Niche area of excellence,Indian Council of Agricultural Research(ICAR),India"
文摘Background： An oviduct-specific glycoprotein, OVGP1, is synthesized and secreted by non-ciliated epithelial cells of the mammalian oviduct which provides an essential milieu for reproductive functions. The present study reports the effects of recombinant buffalo OVGP1 that lacks post-translational modifications, and native Buffalo OVGP1 isolated from oviductal tissue, on frozen-thawed sperm functions and in vitro embryo development.Results： The proportion of viable sperms was greater（P 〈 0.05） in the recombinant OVGP1-treated group compared to the native OVGP1-treated group at 2 h, 3 h, and 4 h of incubation. The proportion of motile sperms at3 h and 4 h of incubation; and membrane-intact sperms at 4 h was greater（P 〈 0.05） in the native OVGP1-treated group compared to the control and recombinant OVGP1-treated groups. The proportion of capacitated and acrosome-reacted sperms was greater（P 〈 0.05） in the native OVGP1-treated group compared to the recombinant OVGP1 group at 4 h. The rates of cleavage of embryos and their development to the blastocyst stage were greater（P 〈 0.05） in the presence of either native or recombinant OVGP1 in comparison to control at 10 μg/mL concentration as compared to 5 or 20 μg/mL.Conclusions： The study suggests that both native and recombinant OVGP1 impart a positive effect on various sperm features and in vitro embryo development. However, native OVGP1 was found to have a more pronounced effect in comparison to recombinant non-glycosylated OVGP1 on various sperm functions except viability. Hence,our current findings infer that glycosylation of OVGP1 might be essential in sustaining the sperm functions but not the in vitro embryo development.
文摘Purpose: Can Cortisol Releasing Hormone (CRH) levels in follicular fluid predict outcomes following assisted reproductive treatment (ART) cycles? Methods: Prospective cohort study of 50 women undergoing in vitro fertilisation (IVF)/intra-cytoplasmic sperm injection (ICSI) cycles over a two month study period. All patients were treated on the long stimulation protocol;follicular fluid was aspirated and pooled for each patient. The samples were processed appropriately and assayed using CRH radioimmunoassay (RIA). Results: This study confirmed that CRH was present in follicular fluid. The average level detected was 173 ± 9 pg/mL (mean ± standard error of mean [SEM]). The data suggests a positive correlation of CRH follicular fluid levels greater than 145 pg/mL with successful ART outcomes. Conclusion: The data indicates a positive correlation between ART outcomes and the presence of follicular fluid CRH levels greater than 145 pg/mL. The results should be interpreted with caution due to the small sample size and pooling of follicular fluid per patient. Furthermore, the pooling of follicular fluid is not representative of CRH levels in an individual follicle, and thus, mature oocyte. This study serves as a reminder to what has previously been hypothesised.
文摘Objective To determine efficacy of gonadotropin （Gn） co-treated with growth hormone （GH） on poor ovarian response （POR） patients undergoing in vitro fertiliza- tion/intracytoplasmic sperm injection （1VF/ICSI）. Methods A total of 58 IVF/ICSI-embryo transfer （ET） cycles in POR patients were retrospectively identified. The POR criteria were defined by Bologna consensus. The cycles were divided into two groups： Gn co-treated with GH group （GH~ group, 25 cycles） and Gn only group （GH- group, 33 cycles）. Results of lVF/ICSI for these two groups were compared. Results The number of oocyte retrieved and the normal fertilization rate in the two groups were no difference （P〉O.05）. High-quality embryo rate and implantation rate in the GH＋ group were 39.6% and 38.5%, respectively, which were slightly higher than those in the GH group （35.9% and 25.0%）, but no difference was found on these two parameters （P〉0. 05）. Conclusion GH, to some extent, can improve the quality of embryo and the implantation rate. Whether GH co-therapy has a definite role in improving the outcome of POR patients still needs further evaluation.
