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Nationwide survey of partial fundoplication in Korea
Chang Min Lee,Joong-Min Park,Han Hong Lee,Kyong Hwa Jun,Sungsoo Kim,Kyung Won Seo,Sungsoo Park,Jong-Han Kim,Jin-Jo Kim,Sang-Uk Han 대한외과학회 2018 Annals of Surgical Treatment and Research(ASRT) Vol.94 No.6
Purpose: Laparoscopic total fundoplication is the standard surgery for gastroesophageal reflux disease. However, partial fundoplication may be a viable alternative. Here, we conducted a nationwide survey of partial fundoplication in Korea. Methods: The Korean Anti-Reflux Surgery study group recorded 32 cases of partial fundoplication at eight hospitals between September 2009 and January 2016. The surgical outcomes and postoperative adverse symptoms in these cases were evaluated and compared with 86 cases of total fundoplication. Results: Anterior partial fundoplication was performed in 20 cases (62.5%) and posterior in 12 (37.5%). In most cases, partial fundoplication was a secondary procedure after operations for other conditions. Half of patients who underwent partial fundoplication had typical symptoms at the time of initial diagnosis, and most of them showed excellent (68.8%), good (25.0%), or fair (6.3%) symptom resolution at discharge. Compared to total fundoplication, partial fundoplication showed no difference in the resolution rate of typical and atypical symptoms. However, adverse symptoms such as dysphagia, difficult belching, gas bloating and flatulence were less common after partial fundoplication. Conclusion: Although antireflux surgery is not popular in Korea and total fundoplication is the primary surgical choice for gastroesophageal reflux disease, partial fundoplication may be useful in certain conditions because it has less postoperative adverse symptoms but similar efficacy to total fundoplication.
Genetic Diversity of Cultivable Plant Growth-Promoting Rhizobacteria in Korea
( Won Il Kim ),( Won Kyong Cho ),( Su Nam Kim ),( Hyo Sub Chu ),( Kyoung Yul Ryu ),( Jong Chul Yun ),( Chang Seuk Park ) 한국미생물 · 생명공학회 2011 Journal of microbiology and biotechnology Vol.21 No.8
To elucidate the biodiversity of plant growth-promoting rhizobacteria (PGPR) in Korea, 7,638 bacteria isolated from the rhizosphere of plant species growing in many different regions were screened. A large number of PGPR were identified by testing the ability of each isolate to promote the growth of cucumber seedlings. After redundant rhizobacteria were removed via amplified rDNA restriction analysis, 90 strains were finally selected as PGPR. On the basis of 16S ribosomal RNA sequences, 68 Gram-positive (76%) and 22 Gram-negative (24%) isolates were assigned to 21 genera and 47 species. Of these genera, Bacillus (32 species) made up the largest complement, followed by Paenibacillus (19) and Pseudomonas (11). Phylogenetic analysis showed that most of the Grampositive PGPR fell into two categories: low- and high- G+C (Actinobacteria) strains. The Gram-negative PGPR were distributed in three categories: α-proteobacteria, β- proteobacteria, and γ-proteobacteria. To our knowledge, this is the largest screening study designed to isolate diverse PGPR. The enlarged understanding of PGPR genetic diversity provided herein will expand the knowledge base regarding beneficial plant-microbe interactions. The outcome of this research may have a practical effect on crop production methodologies.
Cytomegalovirus infection of the gastrointestinal tract: endoscopical aspects (초)
( Kyong Won Park ),( Hye Jeong Kim ),( Hearn Kook Kim ),( Ki Tae Suk ),( Il Young Lee ),( Chang Jin Ye ),( Moon Young Kim ),( Jae Woo Km ),( Hyun Soo Kim ),( Soon Koo Baik ),( Sang Ok Kwon ) 대한내과학회 2008 대한내과학회지 Vol.75 No.1S
경로 매칭 알고리즘을 이용한 구조화된 문서의 변화 탐지
이경호(Kyong Ho Lee),변창원(Chang Won Byun),최윤철(Yoon Chul Choy),고견(Kyun Koh) 한국정보과학회 2001 정보과학회논문지 : 데이타베이스 Vol.28 No.4
본 논문에서는 SGML/XML 문서의 구 버전과 신 버전간의 차이를 계산할 수 있는 효율적인 알고리즘을 제안한다. 차이는 구 버전의 문서를 신 버전으로 변환하는데 소요되는 편집 스크립트로 간주할수 있다. 제안된 알고리즘은 상향식과 하향식의 복합적인 접근 방식을 적용한다. 먼저 두 버전을 구성하는 노드간의 대응관계를 상향식으로 생성하며 하향식 너비 우선 탐색을 적용하여 편집 스크립트를 계산한다. 제안된 알고리즘은 모든 노드간의 대응 여부를 모두 조사할 필요가 없기 때문에 대응관계를 보다 빠르게 생성할 수 있다. 또한 삽입, 삭제, 그리고 갱신의 단순한 변화는 물론이고 부트리 이동과 복사의 구조적으로 보다 의미 있는 변화를 탐지할 수 있다. This paper presents an efficient algorithm to compute differences between old and new versions of an SGML/XML document. The difference between the two versions can be considered to be an edit script that transforms one document tree into another. The proposed algorithm is based on hybridization of bottom-up and top-down methods: matching relationships between nodes in the two versions are produced in a bottom-up manner and top-down breadth-first search computes an edit script. Because the algorithm does not need to investigate possible existence of matchings for all nodes, faster matching can be achieved. Furthermore, it can detect more structurally meaningful changes such as subtree move and copy as well as simple changes to the node itself like insert, delete, and update.
Won, Ji Young,Ahn, Kwang Sung,Sorrell, Alice M.,Shin, Susa,Heo, Soon Young,Kang, Jee Hyun,Park, Jin-Ki,Chang, Won-Kyong,Shim, Hosup Cambridge University Press 2009 Zygote Vol.17 No.2
<B>Summary</B><P>Human complement regulatory protein hCD46 may reduce the hyperacute rejection (HAR) in pig-to-human xenotransplantation. In this study, an <I>hCD46</I> gene was introduced into porcine embryonic germ (EG) cells. Treatment of human serum did not affect the survival of hCD46-transgenic EG cells, whereas the treatment significantly reduced the survival of non-transgenic EG cells (<I>p</I> < 0.01). The transgenic EG cells presumably capable of alleviating HAR were transferred into enucleated oocytes. Among 235 reconstituted oocytes, 35 (14.9%) developed to the blastocyst stage. Analysis of individual embryos indicated that 80.0% (28/35) of embryos contained the transgene hCD46. The result of the present study demonstrates resistance of hCD46-transgenic EG cells against HAR, and the usefulness of the transgenic approach may be predicted by this cytolytic assessment prior to actual production of transgenic pigs. Subsequently performed EG cell nuclear transfer gave rise to hCD46-transgenic embryos. Further study on the transfer of these embryos to recipients may produce hCD46-transgenic pigs.</P>
Flow Cytometry for the Diagnosis of Primary Immunodeficiency Diseases: A Single Center Experience
Won Kyung Kwon,SooIn Choi,Hee-Jin Kim,Hee-Jae Huh,Ji-Man Kang,김예진,유건희,Kangmo Ahn,Hye-Kyung Cho,Kyong Ran Peck,장자현,Chang-Seok Ki,Eun-Suk Kang 대한천식알레르기학회 2020 Allergy, Asthma & Immunology Research Vol.12 No.2
Purpose: While there is an urgent need for diagnosis and therapeutic intervention in patients with primary immunodeficiency diseases (PIDs), current genetic tests have drawbacks. We retrospectively reviewed the usefulness of flow cytometry (FCM) as a quick tool for immunophenotyping and functional assays in patients suspected to have PIDs at a single tertiary care institute. Methods: Between January 2001 and June 2018, patients suspected of having PIDs were subjected to FCM tests, including lymphocyte subset analysis, detection of surface- or intracellular-target proteins, and functional analysis of immune cells, at Samsung Medical Center, Seoul, Korea. The genetic diagnosis was performed using Sanger or diagnostic exome sequencing. Results: Of 60 patients diagnosed with definite or probable PID according to the European Society of Immune Deficiencies criteria, 24 patients were provided with useful information about immunological dysfunction after initial FCM testing. In 10 patients, the PID diagnosis was based on abnormal findings in FCM testing without genetic tests. The FCM findings provided strong evidence for the diagnosis of severe combined immunodeficiency (n = 6), X-linked chronic granulomatous diseases (CGD) (n = 6), leukocyte adhesion deficiency type 1 (n = 3), X-linked agammaglobulinemia (n = 11), autoimmune lymphoproliferative syndrome-FASLG (n = 1), and familial hemophagocytic lymphohistiocytosis type 2 (n = 1), and probable evidence for autosomal recessive-CGD (n = 2), autosomal dominant-hyper-immunoglobulin E (IgE)-syndrome (n = 1), and STAT1 gain-of-function mutation (n = 1). In PIDs derived from PIK3CD (n = 2), LRBA (n = 2), and CTLA4 mutations (n = 3), the FCM test provided useful evidence of immune abnormalities and a tool for treatment monitoring. Conclusions: The initial application of FCM, particularly with known protein targets on immune cells, would facilitate the timely diagnosis of PIDs and thus would support clinical decisions and improve the clinical outcome.