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Minh Tam Le,Hiep Tuyet Thi Nguyen,Trung Van Nguyen,Thai Thanh Thi Nguyen,Hong Nhan Thi Dang,Thuan Cong Dang,Quoc Huy Vu Nguyen The Korean Society for Reproductive Medicine 2023 Clinical and Experimental Reproductive Medicine Vol.50 No.2
Objective: This study aimed to compare the efficacy of physiological intracytoplasmic sperm injection (PICSI) and intracytoplasmic sperm injection (ICSI) in terms of the fertilization rate and embryo quality using sibling oocyte cycles. Methods: This prospective, cross-sectional study collected data from 76 couples who underwent their first cycle at the Hue Center for Reproductive Endocrinology and Infertility, Vietnam, between May 2019 and November 2021. The inclusion criteria were cycles with at least eight oocytes and a sperm concentration of 5×10<sup>6</sup>/mL. Sperm parameters, sperm DNA fragmentation (SDF), fertilization, and the quality of cleavage-stage embryos on day 2 and blastocysts on day 5 were examined. Results: From 76 ICSI cycles, 1,196 metaphase II (MII) oocytes were retrieved, half of which were randomly allocated to either the PICSI (n=592) or ICSI (n=604) treatment group. The results showed no significant difference between the two groups in terms of fertilization (72.80% vs. 75.33%, p=0.32), day 2 cleavage rate (95.13% vs. 96.04%, p=0.51), blastulation rate (52.68% vs. 57.89%), and high-quality blastocyst rate (26.10% vs. 31.13%, p=0.13). However, in cases where SDF was low, 59 cycles consisting of 913 MII oocytes produced a considerably higher blastulation rate with PICSI than with ICSI (50.49% vs. 35.65%, p=0.00). There were no significant differences between the pregnancy outcomes of the PICSI and ICSI embryo groups following embryo transfer. Conclusion: Using variable sperm quality provided no benefit for PICSI versus ICSI in terms of embryo outcomes. When SDF is low, PICSI appears to be able to produce more blastocysts.
Hoạn Thư – nhân vật đặc sắc của Truyện Kiều – qua đối thoại và độc thoại
Le Thi Hong Minh 한국외국어대학교 동남아연구소 2013 東南亞硏究 Vol.23 No.2
In the pool of characters of The Tale of Kieu by the great poet Nguyen Du, Hoan Thu is a special one. Nguyen Du loved Thuy Kieu the most but was especially successful in creating the image of Hoan Thu. Through a scene of jealousy, he uncovered the social nature in the character, and through which reflected the Vietnamese feudal society in the 18th and 19th centuries. The diverse dialogue and monologue language contributes greatly in the perfect and unique depiction of the personality of Hoan Thu, and through which delivers in a special manner the message of the work and the richly humane philosophical concepts of the poet, making the masterpiece The Tale of Kieu a great success and bringing it to the top of Vietnam’s literature.
Hoan Thu -a Special Character in The Tale of Kieu -Through Dialogue and Monologue
( Thi Hong Minh Le ) 한국외국어대학교 동남아연구소 2013 東南亞硏究 Vol.23 No.2
In the pool of characters of The Tale of Kieu by the great poet Nguyen Du, Hoan Thu is a special one. Nguyen Du loved Thuy Kieu the most but was especially successful in creating the image of Hoan Thu. Through a scene of jealousy, he uncovered the social nature in the character, and through which reflected the Vietnamese feudal society in the 18th and 19th centuries. The diverse dialogue and monologue language contributes greatly in the perfect and unique depiction of the personality of Hoan Thu, and through which delivers in a special manner the message of the work and the richly humane philosophical concepts of the poet, making the masterpiece The Tale of Kieu a great success and bringing it to the top of Vietnam`s literature.
Effects of steaming on saponin compositions and antiproliferative activity of Vietnamese ginseng
Le, Thi Hong Van,Lee, Seo Young,Lee, Gwang Jin,Nguyen, Ngoc Khoi,Park, Jeong Hill,Nguyen, Minh Duc The Korean Society of Ginseng 2015 Journal of Ginseng Research Vol.39 No.3
Background: Steaming of ginseng is known to change its chemical composition and biological activity. This study was carried out to investigate the effect of different steaming time-scales on chemical constituents and antiproliferative activity of Vietnamese ginseng (VG). Methods: VG was steamed at $105^{\circ}C$ for 2-20 h. Its saponin constituents and antiproliferative activity were studied. The similarity of chemical compositions between steamed samples at $105^{\circ}C$ and $120^{\circ}C$ were compared. Results: Most protopanaxadiol and protopanaxatriol ginsenosides lost the sugar moiety at the C-20 position with 10-14 h steaming at $105^{\circ}C$ and changed to their less polar analogues. However, ocotillol (OCT) ginsenosides were reasonably stable to steaming process. Antiproliferative activity against A549 lung cancer cells was increased on steaming and reached its plateau after 12 h steaming. Conclusion: Steaming VG at $105^{\circ}C$ showed a similar tendency of chemical degradation to the steaming VG at $120^{\circ}C$ except the slower rate of reaction. Its rate was about one-third of the steaming at $120^{\circ}C$.
Processed Vietnamese ginseng: Preliminary results in chemistry and biological activity
Le, Thi Hong Van,Lee, Seo Young,Kim, Tae Ryong,Kim, Jae Young,Kwon, Sung Won,Nguyen, Ngoc Khoi,Park, Jeong Hill,Nguyen, Minh Duc The Korean Society of Ginseng 2014 Journal of Ginseng Research Vol.38 No.2
Background: This study was carried out to investigate the effect of the steaming process on chemical constituents, free radical scavenging activity, and antiproliferative effect of Vietnamese ginseng. Methods: Samples of powdered Vietnamese ginseng were steamed at $120^{\circ}C$ for various times and thei extracts were subjected to chemical and biological studies. Results: Upon steaming, contents of polar ginsenosides, such as Rb1, Rc, Rd, Re, and Rg1, were rapidly decreased, whereas less polar ginsenosides such as Rg3, Rg5, Rk1, Rk3, and Rh4 were increased as reported previously. However, ocotillol type saponins, which have no glycosyl moiety at the C-20 position, were relatively stable on steaming. The radical scavenging activity was increased continuously up to 20 h of steaming. Similarly, the antiproliferative activity against A549 lung cancer cells was also increased. Conclusion: It seems that the antiproliferative activity is closely related to the contents of ginsenoside Rg3, Rg5, and Rk1.