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Yoon, Jeong,Yoon, Hye-Jin,Juhn, Kyoung-Mi,Ko, Jin-Kyung,Yoon, San-Hyun,Ko, Yong,Lim, Jin-Ho The Korean Society for Reproductive Medicine 2011 Clinical and Experimental Reproductive Medicine Vol.38 No.4
Objective: Since IVF program was first established, various types of media and culture systems have been developed either in-house or commercially. The aim of this study was to compare the efficacy of in-house Maria Research Center (MRC) media to that of commercially available Sydney IVF media in human day 3 embryo transfer cycles. Methods: Three hundred sixty nine couples were included in this prospective, randomized, and comparative study. All couples undergoing IVF treatment at the Maria Fertility Hospital were randomly assigned to either Sydney IVF (n=178) or MRC (n=191) media. Results: No difference was observed between the MRC media and Sydney IVF media groups with respect to fertilization rate (74.4% vs. 75.5%). The clinical pregnancy and implantation rates of MRC media (47.1% and 20.0%, respectively) were also similar to those of Sydney IVF media (44.4% and 19.4%, respectively). However, the proportion of embryos with good quality on day 3 was significantly higher in the MRC media group than the Sydney IVF media group (50.2% vs. 43.2%) ($p$ <0.05). Conclusion: MRC media were as effective as Sydney IVF media for sustaining embryo development and pregnancy rates. The present study implies that MRC media can be a suitable alternative to commercially available media for human IVF-ET program.
Lim, Woo-Hyun,Seo, Won-Woo,Choe, Wonseok,Kang, Chan-Koo,Park, Jonghanne,Cho, Hyun-Ju,Kyeong, San,Hur, Jin,Yang, Han-Mo,Cho, Hyun-Jai,Lee, Yoon-Sik,Kim, Hyo-Soo The Association 2011 Arteriosclerosis, thrombosis, and vascular biology Vol.31 No.12
<P>In contrast to CD34, vascular endothelial-cadherin (VE-cadherin) is exclusively expressed on the late endothelial progenitor cells (EPC) whereas not on the early or myeloid EPC. Thus, VE-cadherin could be an ideal target surface molecule to capture circulating late EPC. In the present study, we evaluated whether anti-VE-cadherin antibody-coated stents (VE-cad stents) might accelerate endothelial recovery and reduce neointimal formation through the ability of capturing EPC.</P>
Yoon, Jee-Hyun,Park, Ha-Yeong,Kim, Tae-Ju,Lee, Seung-Ho,Kim, Jung-Hoon,Lee, Guem-San,Kim, Hong-Jun,Ju, Young-Sung The Society of Korean Medicine 2014 대한한의학회지 Vol.35 No.4
Objectives: This study aimed for establishing the discriminative criteria for Aucklandiae Radix, Inulae Radix, Vladimiriae Radix and Aristolochiae Radix, which can be confused as 'Mokhyang', because of similar appearances and synonyms. Methods: Morphological characteristics of dried herbal medicines were compared by macroscopic observation. To examine microscopic features of 'Mokhyang', paraffin embedding and the staining by using Ju's method were conducted. Physicochemical experiments were performed using HPLC analysis and antioxidant assay. Results: The types of stem, phyllotaxy and leaf shape were chosen as macroscopic criteria and the size, oil spots, color and root top as well as phloem and central cylinder were compared using microscopic features. The HPLC results showed different amounts of costunolide and dehydrocostuslactone among Aucklandiae Radix, Inulae Radix and Vladimiriae Radix. However, Aristolochiae Radix only contained aristolochic acid. The antioxidant assays also showed that Vladimiriae Radix exhibited strongest antioxidant activity followed by Aucklandiae Radix, Inulae Radix and Aristolochiae Radix. Conclusions: These results demonstrate that macroscopic, microscopic and physicochemical methods would be useful tools for the discrimination of 4 kinds of 'Mokhyang'.
An effective method for improving outcomes in patients with a fertilization defect
Yoon, Hye Jin,Kim, Hyung Jun,Bae, In Hee,Chae, Soo Jin,Yoon, San Hyun,Lee, Won Don,Lim, Jin Ho The Korean Society for Reproductive Medicine 2014 Clinical and Experimental Reproductive Medicine Vol.41 No.3
The effect of artificial oocyte activation (AOA) with a calcium ionophore on intracytoplasmic morphologically selected sperm injection (IMSI) was examined in patients with histories of repeated failed implantation attempts. Four singleton pregnancies and one twin pregnancy were obtained after embryos transfer (5/14, 35.7%). Therefore, AOA combined with IMSI can be considered an option for cycles with a fertilization defect and recurrent implantation failures.
윤산현,박세필,박태균,고대환,정길생 한국낙농학회 1989 韓國酪農學會誌 Vol.11 No.3
本 硏究는 發精牛血淸, 牛卵胞液 및 成熟卵丘細胞가 牛卵胞卵의 體外成熟과 體外受精에 미치는 效果를 調査하였으며 그 結果는 다음과 같다. 1. 發精牛血淸 50%와 成熟卵丘細胞를 添加한 m-TALP 培養液에 있어서의 卵胞卵의 成熟率은 63.7%로서 이는 基礎培養液 및 100% 發精牛血淸에 있어서의 成熟率인 40.2% 및 47.3%보다 有意하게(P<0.05) 높았다. 2. m-TALP 培養液에 牛卵胞液 50%와 成熟卵丘細胞을 添加했을 때의 卵胞卵의 成熟率은 70.5%로서 이는 基礎培養液에 있어서의 38.3%나, 100% 牛卵胞液에 있어서의 50.7%보다 有意하게(P<0.05) 높았다. 3. 發精牛血淸이나 牛卵胞液이 添加된 m-TALP 培養液에서 成熟卵丘細胞와 함께 同伴培養에 의해 成熟된 卵胞卵의 體外受精率은 22.3∼43.2%였는데 이 成績은 基礎培養液의 11.6∼17.2%보다 有意하게(P<0.01) 높았으며, 특히 25% 發精牛血淸과 25% 牛卵胞液을 添加한 培養液에서 成熟된 卵胞卵의 體外受精率은 43.2%로서 가장 높았다. These experiments were carried out to investigate the effects of estrus bovine serum(EBS), bovine follicular fluid(BFF) and matured cumulus cells(MCC) on in vitro maturation and fertilization of bovine follicular oocytes. The ovaries and testes were obtained from slaughtered Holstein cow and bulls respectively. The follicular oocytes surrounded with cumulus cells were recovered by aspirating the follicular fluid from the visible follicles of diameter 2-6 ㎜ and the semen were prepared from bull's epididymal cauda. The follicular oocytes were cultured in m-TALP medium containing EBS, BFF or/and MCC for 32h in a incubator with 5% CO_2 in air at 38℃, and then matured oocytes were again cultured for 24h, with 5×10^5/㎖ motile sperm capacitated in the BO medium containing 5㎎/㎖ BSA and 2.5㎜ caffein. The results obtained in these experiments were summarized as follow: 1. The maturation rate of the follicular oocytes, 63.7%, obtained from the m-TALP medium supplemented with 50% EBS and MCC was significantly higher (P<0.05) than that from basic medium (40.2%) or from 100% EBS medium (47.3%). 2. The maturation rate of the follicular oocytes cultured in m-TALP medium supplemented with 50% BFF and MCC was 70.5%. This value was significantly higher (P<0.05) than 38.3% of basic medium or 50.7% of 100% BFF medium. 3. The fertilization rates of the follicular oocytes matured in the m-TALP medium supplemented with EBS, BFF or/and MCC were ranged from 22.3% to 43.2%, and those values were significantly higher (P<0.01) than that of the follicular oocytes matured in basic medium. The highest fertilization rate, 43.2%, was obtained from m-TALP medium supplemented with EBS and BFF by 25% respectively.
Treatment outcome of nasal natural killer/T-cell lymphoma
Hyun Jin Lee,Sang-Wook Lee,Cheolwon Suh,Jooryung Huh,Sang Min Yoon,Young Seok Kim,Su San Kim,Jong Hoon Kim,Eun Kyung Choi,Seung Do Ahn 대한방사선종양학회 2011 Radiation Oncology Journal Vol.29 No.3
Purpose: To evaluate the radiotherapy treatment outcome of patients in stage IE and IIE nasal natural killer/T-cell lymphoma. Materials and Methods: From August 1999 to August 2009, 46 patients with stage IE and IIE nasal natural killer/T-cell lymphoma were treated by definitive radiotherapy and chemotherapy. 33 patients were treated with chemotherapy followed by radiotherapy (CT + RT) and they received 50.4 Gy in 28 fractions. 13 patients were treated with concurrent chemoradiotherapy (CCRT) and they received 40 Gy in 20 fractions. Results: The median follow-up period was 4.6-137.6 months (median, 50.2 months) for all patients. The 4-year overall survival was 68.6% and 4-year disease free survival (DFS) was 61.9%. The 4-year locoregional recurrence free survival was 65.0%, and 4-year distant metastasis free survival (DMFS) was 66.2%. For patients treated with CT + RT, 15 patients (45.5%) achieved complete response after chemotherapy, and 13 patients (39.4%) achieved partial response. 13 patients (81.8%) achieved complete response after radiotherapy, and 6 patients (18.2%) achieved partial response. For patients treated with CCRT, 11 patients (84.6%) achieved complete response, and one patient (7.7%) achieved partial response. In univariate analysis, presence of cervical lymph node metastasis was only signifi cant prognostic factor for DFS and DMFS. Conclusion: This study did not show satisfactory overall survival rate and disease free survival rate of definitive radiotherapy and chemotherapy for stage IE and IIE nasal natural killer/T-cell lymphoma. For patients with cervical lymph node metastasis, further investigation of new chemotherapy regimens is necessary to reduce the distant metastasis.
Yoon, Jeong,Juhn, Kyoung-Mi,Yoon, San-Hyun,Ko, Yong,Lim, Jin-Ho The Korean Society for Reproductive Medicine 2017 Clinical and Experimental Reproductive Medicine Vol.44 No.1
Objective: The aims of this study were to investigate whether fertilization could induce the resumption of meiosis in mouse oocytes arrested at metaphase I (MI) after in vitro maturation (IVM), and to investigate the effect of $Ca^{2+}$ chelator treatment at the time of fertilization on the transition from MI to metaphase II (MII). Methods: MII-stage and arrested MI-stage mouse oocytes after IVM were fertilized, and then embryonic development was monitored. Blastocysts from each group were transferred into 2.5 days post-coitum pseudo-pregnant ICR mice. MI oocytes after IVM were treated with a $Ca^{2+}$ chelator to investigate the effect of $Ca^{2+}$ oscillations on their maturation. Results: As insemination time increased, the number of oocytes in the MI group that reached the MII stage also increased. The blastocyst rates and total cell numbers in the MII group were significantly higher than in the MI group. No pregnancy occurred in the MI group, but 10 pregnancies were achieved (10 of 12) in the MII group. The proportion of MI oocytes that matured to MII oocytes after fertilization was significantly higher in the non-treated group than in the $Ca^{2+}$ chelator-treated group. Conclusion: The findings that a higher proportion of MI-arrested oocytes progressed to MII after fertilization and that the MI-to-MII transition was blocked by $Ca^{2+}$ chelator treatments before fertilization indicate that the maturation of MI oocytes to MII oocytes is associated with intracellular $Ca^{2+}$ oscillations driven by fertilization.