http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
DNA Barcode Reference Library for the Korean Butterfly for the Reliable Identification
KANG, Tae Hwa,Tae Man HAN,Young Bo LEE,Sung Soo KIM,Sang Hyeon LEE,Jong Chel JEONG,Sang Kyu SON,Hae Chul PARK 한국응용곤충학회 2012 한국응용곤충학회 학술대회논문집 Vol.2012 No.05
We tested the identification ability of DNA barcodes comparing with morphological data using the Korean butterflies. The 921 samples (4.6 samples per species) for 202 resident Korean species except migratory species were used. The obtained samples were morphologically identified based on wing patterns. In a result, genetic divergence to the nearest-neighbouring taxon varied from 0 to 28.2%, with an average of 13.4 per cent. The neighbour joining (NJ) tree profile showed that sequence data for 185 of the 202 species formed distinct barcode clusters. Thus, our results indicated that 91.6 percent of the species were possible to allow the reliable identification using DNA barcoding. The rest 17 species (8.4%) consist of following four cases: clustering separated from each species by less than 1% branch length (two species pairs), paraphyletic clustering (two species pairs and one triple species pair), polyphyletic clustering with sharing barcodes (three species pairs), and clustering separated from existing species by the deep branch divergence (four clusters). However, it was not easy to interpret these ambiguous cases only using our current taxonomic evidences. Therefore, we are performing integrative taxonomy on these cases using other additional evidences such as examination on male genitalia and analysis of other gene regions.
Kang Hee Cho,Kwang-Sik Cho,Jeom Hwa Han,Hyun Ran Kim,Il Sheob Shin,Se Hee Kim,Jae An Chun,Hae-Sung Hwang 한국육종학회 2013 한국육종학회 심포지엄 Vol.2013 No.07
The precise, fast, and cost-effective identification of important fruit crop cultivars is essential for practical breeding and plant breeder’s rights. Traditional methods for identification of persimmon cultivars are based on the evaluation of sets of morphological characteristics. However, the identification using only morphological traits is difficult to distinguish among genetically closely related cultivars. This study was conducted to develop more reliable DNA markers for identification of the 32 persimmon cultivars in Korea and Japan. In total, 309 random amplified polymorphic DNA (RAPD) markers were identified using 40 different random primers. The 4 (OPP-08) to 14 (UBD159) polymorphic bands were detected with an average of 7.7. The resulting 57 RAPD fragments were selected, and their sequences were determined for developing sequence-characterized amplified region (SCAR) markers. As a result, 15 of 57 RAPD fragments were successfully converted to SCAR markers. A single polymorphic band of the same size as the RAPD fragments or smaller DNA fragments were amplified depending on primer combinations in the 15 SCAR markers. Among these markers, a combination of eight SCAR markers (PS225_200, PSN05_420, PSF13_523, PSN11_540, PS372_567, PS485_569, PSP08_635, and PS631_735) provided sufficient polymorphisms to identify 32 persimmon cultivars depending on number and size of amplicons. These newly developed markers will be useful as a fast and reliable tool to identify persimmon cultivars.
Gallstone, cholecystectomy and risk of gastric cancer
Sung Hwa Kang,Young Hoon Kim,Young Hoon Roh,Kwan Woo Kim,Chan Joong Choi,Min Chan Kim,Su Jin Kim,Hee Jin Kwon,Jin Han Cho,Jin Seok Jang,Jong Hun Lee 한국간담췌외과학회 2017 Annals of hepato-biliary-pancreatic surgery Vol.21 No.3
Backgrounds/Aims: The aim of this retrospective study is to compare stomach cancer incidence, characteristics between gallstones, cholecystectomy and control groups. It also aims to investigate key variables’ potential effects on overall survival. Methods: A total of 99 patients, diagnosed with stomach cancers between April 1994 and December 2015, were identified. We excluded stomach cancer patients, accrued during the first year of follow-up in both the gallstones and cholecystectomy groups, assuming that they missed cancers. The main analyses addressing the objective were a chi-square analysis and a survival analysis. Results: The incidence of stomach cancers was increased in both the gallstone and cholecystectomy groups, compared with the control group (p=0.003). Multivariate regression analysis showed that the overall survival in gallstones, cholecystectomy group patients as compared with those in the control group decreased (HR=6.66, 95 CI: 1.94-22.80, p=0.003). Also, T-stage was found to statistically affect the rate of overall survival (HR=9.85, 95% CI: 3.09-31.39, p=.000). The stomach cancer showed the worse survival at the posterior, greater curvature location than anterior, lesser curvature of the stomach. (HR=0.30, 95% CI: 0.11-0.80, p=0.017). Conclusions: We provided an awareness of the possible increased risks of stomach cancer in gallstone and cholecystectomy group patients, which might be induced by duodenogastric bile reflux. Also, the survival rate was poor (p<0.000). Therefore, close follow-up strategies for early detection are recommended for such patients.
Sung-Hoon Han,Eon-Hwa Lee,Jin-Hyoung Cho,Jong-Moon Chae,Sang-Cheol Kim,Na-Young Chang,Kyung-Hwa Kang 대한치과교정학회 2013 대한치과교정학회지 Vol.43 No.5
Objective: The purpose of this study was to classify Korean young adults into 3 groups on the basis of upper incisor exposure rates (UIERs) and to compare the skeletal, dental, and soft tissue variables. Methods: Samples were obtained from 127 students at the College of Dentistry, Wonkwang University in South Korea. Facial photographs of frontal posed smiles and lateral cephalograms of the subjects were taken. The subjects were divided into 3 groups on the basis of UIERs and 20 measurements were compared among the 3 groups. The correlations between the variables were determined. Results: Male and female subjects showed significant differences in the group distribution. Male subjects showed higher frequencies of low smiles, and female subjects showed higher frequencies of high smiles. The vertical height of the anterior alveolar process of the maxilla directly correlated with the UIER. However, the UIER showed no significant correlation with the vertical height of the anterior basal bone or the inclination of the upper incisor axis. In female subjects, the upper central incisor clinical crown length showed an inverse correlation with the UIER. However, this variable showed no significant correlation with the UIER in male subjects. Conclusions: The UIER was directly correlated with the levator muscle activity of the upper lip and inversely correlated with the upper lip thickness, yet there was no correlation between the UIER and upper lip length at rest.