Progesterone 및 Acetyl-L-Carnitine이 정자의 동결-융해에 미치는 영향

정병준,김윤진,최형민,전명권,이응수,나오순,Jung, Byeong-Jun,Kim, Yun-Jin,Choi, Hyung-Min,Jun, Myung-Kwon,Lee, Eung-Soo,Nah, O-Soon 대한생식의학회 2001 Clinical and Experimental Reproductive Medicine Vol.28 No.4

Objective : To assess the effects of progesterone and acetyl-L-carnitine used after treated with Isolate?? gradient before semen cryopreservation-thawing on sperm parameters and membrane integrity. Material and Methods : From April 2001 to July 2001, ten normal male partner of couples who were visited in vitro fertilization (IVF) clinics. the semens were treated with $Isolate^{(R)}$ gradient before cryopreservation, spermatozoa was incubated with progesterone (1, 5 and $10{\mu}M$), acetyl-L-carnitine (2.5, 5 and $10{\mu}M$), or both (progesterone, $1{\mu}M$; and acetyl-L-carnitine, $5{\mu}M$) for 30 min. Results: There were no differences in sperm parameters and vital stain among isolate only treated group, progesterone (1, 5 and $10{\mu}M$), acetyl-L-carnitine (2.5, 5 and $10{\mu}M$) and both (progesterone, $1{\mu}M$; and acetyl-L-carnitine, $5{\mu}M$). But, in high concentration of acetyl-L-carnitine ($10{\mu}M$) treated group, sperm parameters and vital stain were decreased. The statistical method was used ANOVA (Kruskal-Wallis test) and p value was <0.01. Conclusions : Neither progesterone nor acetyl-L-carnitine show to be protective effect on the cryodamage assessed by sperm parameters and vital stain (eosin-Y stain) in normal sperm. High concentration of acetyl-L-carnitine ($10{\mu}M$), however, was harmful effect on cryoprevention.

커피전문점의 서비스스케이프, 이용고객의 브랜드 태도 및 브랜드 충성도간의 관계에 대한 탐색적 연구

최형민(Choi Hyung Min),유한나(You Han Nah) 한국식공간학회 2011 식공간연구 Vol.6 No.1

This study investigates the Servicescape, which is associated with customers' Brand Attitude, and the relationship between Brand Attitude and Brand Loyalty to coffee shop brands. It aims to help suggest an appropriate branding strategy to the coffee shop brands in Korea. A sample of 491 coffee shop customers was collected from Seoul and Gyeonggi Province and data from 483 were used to derive the results after 8 outliers were removed. The dimensions pertaining to Servicescape include Interior Aesthetic, Cleanliness, Atmosphere, Layout, Staff Factor, and Social Factor. Path Analysis was conducted after the test of construct validity and reliability. The results can be summarized as follows: (1) Interior Aesthetics, Atmosphere, Staff Factor, and Social Factor are positive predictors of Brand Attitude. The effects of Cleanliness and Layout on Brand Attitude are insignificant. (2) Brand Attitude influences Brand Loyalty significantly. (3) The effects of Atmosphere and Staff Factor on Brand Attitude are higher than those of Interior Aesthetics and Social Factor.

국내패션업체의 디스플레이 실무에 관한 조사연구

최형민(Hyung Min Choi),김혜경(Hye Kyung Kim),이경미(Kyoung Mi Lee) 한국복식학회 2000 服飾 Vol.50 No.6

In viewpoint of visual merchandising, display is recognized as important means of expressing fashion as well as essential factor of stimulating customers` interest in purchase. However, visual merchandising is relatively new area and the number of specialized display personnels are limited Therefore, the purpose of this study was to investigate the practice of display in domestic fashion industry. For this study, the display personnels working in 51 fashion brands were interviewed. The result was analyzed by using frequency count and percentage. It was found that few human resources were undertaking display work in various and abundant stores with relatively frequent display replacement. And main part of display work was performed outside office hours which brought out extension of working time. Comparatively more budget assigned for ladies `brand than mens` brand, youngsters `than middle-ages` and obtaining display-related information was being done mostly via domestic documentary sources and market researches. In general, optimistic attitudes were significantly shown by the interviewees that the importance of display is increasingly recognized, in the domestic fashion industry and therefore the prospect of display found to be expected as prosperous.

리액션성 대사의 음량이 시청영상 감성평가에 미치는 영향

최형민(Hyung-Min Choi),이주환(Ju-Hwan Lee) 한국디지털콘텐츠학회 2021 한국디지털콘텐츠학회논문지 Vol.22 No.12

임신 전 체질량지수와 임신 중 체중 증가에 따른 주산기 예후

최형민 ( Hyung Min Choi ) 대한산부인과학회 2010 Obstetrics & Gynecology Science Vol.53 No.11

목적: 임신 전 체질량지수와 임신 중 체중 증가에 따른 주산기 예후와의 관련성에 대하여 알아보고자 하였다. 연구 방법: 2005년 1월부터 2007년 12월까지 본원에서 만삭 분만하였던 임신부 중에서 임신 전 체질량지수를 알 수 있었던 임신부를 대상으로 하여 체질량지수(body mass index [BMI], kg/m2)는 아시아 기준 저체중(<18.5), 정상체중(18.5≤BMI<23), 과체중(23≤BMI<25), 비만(≥25)의 네 군으로 나누어 비교하였으며, 임신 중 체중 증가는 정상 체중 증가를 12~13.5 kg을 기준으로 저체중 증가군(<12 kg), 정상 체중 증가군(12~13.5 kg), 과체중 증가군(>13.5 kg)의 세 군으로 나누어 비교하였다. 각 군에서의 모성합병증과 신생아합병증 유무를 조사하였다. 결과: 연구 대상 임신부는 전체 225명이었고, 임신 전 체질량지수에 따라 나누었을 때 각각 저체중군 35명(15.5%), 정상체중군 132명(58.7%), 과체중군 31명(13.8%), 비만군 27명(12.0%)이었으며. 임신 중 체중 증가는 저체중 증가군 73명(32.4%), 정상체중 증가군 44명(19.6%), 과체중 증가군 108명(48.0%)이었다. 임신 중 체중 증가의 정도를 세 군으로 나누어 임신 전 체질량지수에 따른 분포와 비교하여 보면 통계적으로 의의 있게 저체중군에서 과체중 증가군이 많았으며, 과체중군, 비만군에서 저체중 증가군이 많았다. 주산기 예후에서는 임신 전 체질량지수가 높을수록 임신성 당뇨, 제왕절개분만의 빈도, 거대아의 빈도가 각각 의의 있게 높았다. 그리고 임신 중 체중 증가가 많을수록 제왕절개분만의 빈도, 거대아의 빈도에서 각각 의의 있게 높았다. 결론: 임신 전 체질량지수가 높을수록 임신성 당뇨, 제왕절개분만, 거대아가 의의 있게 증가하였으며, 임신 중 체중 증가가 많을수록 제왕절개분만, 거대아가 의의 있게 증가하였다. Objective: To examine the association between prepregnancy body mass index (BMI), gestational weight gain and perinatal outcomes. Methods: The data of women who delivered at term in our institute from January 2005 to December 2007 were analyzed retrospectively. Four categories of prepregnancy BMI and three categories of gestational weight gain were constructed and used maternal, neonatal outcomes. Results: This study included 225 women with term delivered in our institute. According to prepregnancy BMI categories, lean (<18.5), normal (18.5≤BMI<23), overweigh (23≤BMI<25), obese (≥25) were 35, 132, 31, 27, respectively. According to gestational weight gain categories, lean (<12 kg), normal (12~13.5 kg), overweight (>13.5 kg) were 73, 44, 108, respectively. Gestational weight gain above guidelines was common in low prepregnancy weight group, this difference was statistically significant. In women with increased prepregnancy BMI was associated with increased risk of gestational diabetes mellitus, cesarean section rate, and large for gestational age (LGA) (P<0.05). In women with overweight gain during pregnancy was associated with increased cesarean section rate and LGA (P<0.05). Conclusion: Increased prepregnancy BMI was associated with increased gestational diabetes mellitus, cesarean section rate, and LGA. Also excessive weight gain during pregnancy was associated with increased cesarean section rate and LGA.

모성 사망 및 산과 환자의 집중관리

최형민 ( Hyung Min Choi ) 대한주산의학회 2000 Perinatology Vol.11 No.3

선천성 기형

최형민 ( Hyung Min Choi ) 대한주산의학회 1999 Perinatology Vol.10 No.2

임신부 영양 가이드라인

최형민 ( Hyung Min Choi ) 대한산부인과학회 2008 Obstetrics & Gynecology Science Vol.51 No.5

임신 32~36주에 분만 결정을 위한 checklist

최형민 ( Hyung Min Choi ) 대한주산의학회 2008 Perinatology Vol.19 No.3

임산부에서 발생한 말라리아 감염 2예

최형민 ( Hyung Min Choi ),김윤진 ( Yun Jin Kim ) 대한주산의학회 2003 大韓周産醫學會雜誌 Vol.14 No.1

최근에 한국에서는 수입형 말라리아가 증가하고 있고, 간간이 토착형 말라리아가 보고되고 있다. 그러나 말라리아에 감염된 산모는 드문 경우로, 본원에서 임신 2분기에 감염되어 산전에 치료 후 건강한 만삭의 신생아를 분만한 한 예와 임신 33주 경에 조기 분만 후 균이 동정되어 치료 후 신생아는 출생 후 6주경에 선천성 말라리아로 치료한 한 예를 경험하였다. 이에 본 저자들은 상기 증례들을 각각 간단한 문헌 고찰과 함께 보고하는 바이다. Recently, in Korea, the number of malarial infections from endemic countries are in increasing and occasionally domestic infections are reported. But the malarial infection during pregnancy is rare case. We have experienced two cases of malarial infected pregnant women. They did not traveling in malaria endemic area and transfusion history. One had been treated during antepartum and delivered a healthy baby at term and her baby did not have any evidence of congenital malarial infection. But another pregnant woman has not been treated antepartum and treated after delivery. Her baby was infected with congenital malaria. Thus, we present these two cases with a brief review of literatures.