• Title/Summary/Keyword: Genetic Research

Search Result 6,132, Processing Time 0.034 seconds

Diterpenoids from the Roots of Agastache rugosa and their Cytotoxic Activities (배초향 지하부의 Diterpene 성분과 그 세포독성)

  • Lee, Hyeong-Kyu;Byon, Soon-Jung;Oh, Se-Ryang;Kim, Jung-Il;Kim, Young-Ho;Lee, Chong-Ock
    • Korean Journal of Pharmacognosy
    • /
    • v.25 no.4 s.99
    • /
    • pp.319-327
    • /
    • 1994
  • A new diterpene, agastanol[1] with dehydroagastol[2] was isolated from th root of Agastache rugosa, and their structures were elucidated by chemical and instrumental analysis. Agastanol[1], its derivatives, agastanone[3] and methylagastanol[5], and dehydroagastol[2] showed cytotoxic activites against in vitro human cancer cell lines. Agastanol[1] showed weak antifungal activity against Trichophyton rubrum.

  • PDF

TILIANIN PREVENTS DIET-INDUCED ATHEROSCLEROSIS BY INHIBITION OF NUCLEAR FACTOR $\textsc{k}$B (NF- $\textsc{k}$B) ACTIVATION IN LDL RECEPTOR DEFICIENT MICE

  • Nam, Kung-woo;Woonchon Mar;Cho, Myung-Hang;Hong, Jung-Joo;Park, Jae-Hoon;Oh, Goo-Tag
    • Proceedings of the Korean Society of Toxicology Conference
    • /
    • 2001.10a
    • /
    • pp.128-129
    • /
    • 2001
  • Tilianin, purified from acrial part of Agastache rugosa Kuntze, reduces progression and may induce some regression of aortic foam cell formation in low density lipoprotein receptor deficient mice (LDLR -/- mice). We investigated whether tilianin can prevent high fat diet-induced atherosclerosis. Twenty-six male mice were divided into three groups.(omitted)

  • PDF

The Structure Determination of a Herbicidal Compound, 3D5

  • Kim, Shin-Duk;Ryoo, In-Ja;Kim, Chang-Jin;Uramoto, Masakazu;Yoo, Ick-Dong
    • Journal of Microbiology and Biotechnology
    • /
    • v.3 no.1
    • /
    • pp.51-56
    • /
    • 1993
  • The structure of herbicidal compound, 3D5, isolated from the culture broth of Streptomyces sp. 3D5, was elucidated as a 16-membered diene macrolide by the spectroscopic method. It was identical with bafilomycin D which has been known to be an insecticidal compound and an inhibitor of $K^{+}-dependent$ ATPase. However, this is the first report which shows that bafilomycin D has a herbicidal activity.

  • PDF

Ethical Considerations in Genomic Cohort Study (유전체 코호트 연구의 윤리적 고려 사항)

  • Choi, Eun-Kyung;Kim, Ock-Joo
    • Journal of Preventive Medicine and Public Health
    • /
    • v.40 no.2
    • /
    • pp.122-129
    • /
    • 2007
  • During the last decade, genomic cohort study has been developed in many countries by linking health data and genetic data in stored samples. Genomic cohort study is expected to find key genetic components that contribute to common diseases, thereby promising great advance in genome medicine. While many countries endeavor to build biobank systems, biobank-based genome research has raised important ethical concerns including genetic privacy, confidentiality, discrimination, and informed consent. Informed consent for biobank poses an important question: whether true informed consent is possible in population-based genomic cohort research where the nature of future studies is unforeseeable when consent is obtained. Due to the sensitive character of genetic information, protecting privacy and keeping confidentiality become important topics. To minimize ethical problems and achieve scientific goals to its maximum degree, each country strives to build population-based genomic cohort research project, by organizing public consultation, trying public and expert consensus in research, and providing safeguards to protect privacy and confidentiality.

Estimation of genetic parameters for temperament in Jeju crossbred horses

  • Kim, Nam Young;Son, Jun Kyu;Cho, In Cheol;Shin, Sang Min;Park, Seol Hwa;Seong, Pil Nam;Woo, Jae Hoon;Park, Nam Geon;Park, Hee Bok
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.31 no.8
    • /
    • pp.1098-1102
    • /
    • 2018
  • Objective: Temperament can be defined as a type of behavioral tendency that appears in a relatively stable manner in responses to various external stimuli over time. The aim of this study was to estimate genetic parameters for the records of temperament testing that are used to improve the temperament of Jeju crossbred (Jeju${\times}$Thoroughbred) horses. Methods: This study was conducted using 205 horses (101 females and 104 males) produced between 2010 and 2015. The experimental animals were imprinted and tamed according to the Manual for Horse Taming and Evaluation for Therapeutic Riding Horses and evaluated according to the categories for temperament testing (gentleness, patience, aggressiveness, sensitivity, and friendliness) between 15 months and 18 months of age. Each category was scored on a five-point linear scale. Genetic parameters for the test categories were analyzed using a multi-trait mixed model with repeated records. The ASReml program was used to analyze the data. Results: The heritability of gentleness, patience, aggressiveness, sensitivity and friendliness ranged from 0.08 to 0.53. The standard errors of estimated heritability ranged from 0.13 to 0.17. The test categories showed high genetic correlations with each other, ranging from 0.96 to 0.99 and high repeatability, ranging from 0.70 to 0.73. Conclusion: The results of this study showed that the test categories had moderate heritability and high genetic correlations, but additional studies may be necessary to use the results for the improvement programs of the temperament of Jeju crossbred horses.

A Vehicle Routing Problem with Double-Trip and Multiple Depots by using Modified Genetic Algorithm (수정 유전자 알고리듬을 이용한 중복방문, 다중차고 차량경로문제)

  • Jeon, Geon-Wook;Shim, Jae-Young
    • IE interfaces
    • /
    • v.17 no.spc
    • /
    • pp.28-36
    • /
    • 2004
  • The main purpose of this study is to find out the optimal solution of the vehicle routing problem considering heterogeneous vehicle(s), double-trips, and multi depots. This study suggests a mathematical programming model with new numerical formula which considers the amount of delivery and sub-tour elimination and gives optimal solution by using OPL-STUDIO(ILOG). This study also suggests modified genetic algorithm which considers the improvement of the creation method for initial solution, application of demanding point, individual and last learning method in order to find excellent solution, survival probability of infeasible solution for allowance, and floating mutation rate for escaping from local solution. The suggested modified genetic algorithm is compared with optimal solution of the existing problems. We found the better solution rather than the existing genetic algorithm. The suggested modified genetic algorithm is tested by Eilon and Fisher data(Eilon 22, Eilon 23, Eilon 30, Eilon 33, and Fisher 10), respectively.

A Genetic Algorithm for Single Machine Scheduling with Unequal Release Dates and Due Dates (상이한 납기와 도착시간을 갖는 단일기계 일정계획을 위한 유전 알고리즘 설계)

  • 이동현;이경근;김재균;박창권;장길상
    • Journal of the Korean Operations Research and Management Science Society
    • /
    • v.24 no.3
    • /
    • pp.73-82
    • /
    • 1999
  • In this paper, we address a single machine non-preemptive n-job scheduling problem to minimize the sum of earliness and tardiness with different release times and due dates. To solve the problem, we propose a genetic algorithm with new crossover and mutation operators to find the job sequencing. For the proposed genetic algorithm, the optimal pair of crossover and mutation rates is investigated. To illustrate the suitability of genetic algorithm, solutions of genetic algorithm are compared with solutions of exhaustive enumeration method in small size problems and tabu search method in large size problems. Computational results demonstrate that the proposed genetic algorithm provides the near-optimal job sequencing in the real world problem.

  • PDF

Update of genetic susceptibility in patients with Kawasaki disease

  • Yoon, Kyung Lim
    • Clinical and Experimental Pediatrics
    • /
    • v.58 no.3
    • /
    • pp.84-88
    • /
    • 2015
  • Kawasaki disease (KD) is an acute systemic vasculitis that predominantly affects children, and can result in coronary artery lesions (CAL). A patient with KD who is resistant to treatment with intravenous immunoglobulin (IVIG) has a higher risk of developing CAL. Incomplete KD has increased in prevalence in recent years, and is another risk factor for the development of CAL. Although the pathogenesis of KD remains unclear, there has been increasing evidence for the role of genetic susceptibility to the disease since it was discovered in 1967. We retrospectively reviewed previous genetic research for known susceptibility genes in the pathogenesis of KD, IVIG resistance, and the development of CAL. This review revealed numerous potential susceptibility genes including genetic polymorphisms of ITPKC, CASP3, the transforming growth factor-${\beta}$ signaling pathway, B lymphoid tyrosine kinase, FCGR2A, KCNN2, and other genes, an imbalance of Th17/Treg, and a range of suggested future treatment options. The results of genetic research may improve our understanding of the pathogenesis of KD, and aid in the discovery of new treatment modalities for high-risk patients with KD.

Association Study Between Genetic Polymorph isms in Interleukin-1 Gene Family and Adult Periodontitis in Korean

  • Kang, ByungYong;Kang, Chin Yang;Lee, Kang Oh
    • Toxicological Research
    • /
    • v.20 no.4
    • /
    • pp.299-305
    • /
    • 2004
  • Adult periodontitis (AP) is a chronic inflammatory disease whose etiology is not well defined. Some studies suggested that the clinical characteristics of this disease may be in part explained by genetic factors, and some attempts to find genetic markers for this disease were successful. The interleukin-1 (IL-1) gene family as one of genetic factors may influence the expression of adult periodontitis. The aim of present study is to investigate the frequencies of genetic polymorphisms in the IL-1 gene family encoding three genes (IL-1A, IL-1B and IL-1RN) in Korean AP patients and periodontically healthy controls. There were no significant differences in genotype and allele frequencies of these polymorph isms between two groups, respectively. However, -511 polymorphism of IL-1 B gene was significantly associated with mean pocket depth (MPD, mm) value in AP patients (P<0.05). Therefore, our results suggest that -511 polymorphism in the IL-1B gene may be useful as a genetic marker for the severity of AP in Koreans.

A Greedy Genetic Algorithm for Release Planning in Software Product Lines (소프트웨어 제품라인의 출시 계획 수립을 위한 탐욕 유전자 알고리듬)

  • Yoo, Jaewook
    • Journal of Korean Society of Industrial and Systems Engineering
    • /
    • v.36 no.3
    • /
    • pp.17-24
    • /
    • 2013
  • Release planning in a software product line (SPL) is to select and assign the features of the multiple software products in the SPL in sequence of releases along a specified planning horizon satisfying the numerous constraints regarding technical precedence, conflicting priorities for features, and available resources. A greedy genetic algorithm is designed to solve the problems of release planning in SPL which is formulated as a precedence-constrained multiple 0-1 knapsack problem. To be guaranteed to obtain feasible solutions after the crossover and mutation operation, a greedy-like heuristic is developed as a repair operator and reflected into the genetic algorithm. The performance of the proposed solution methodology in this research is tested using a fractional factorial experimental design as well as compared with the performance of a genetic algorithm developed for the software release planning. The comparison shows that the solution approach proposed in this research yields better result than the genetic algorithm.