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육상호지를 이용한 참갑오징어(Sepia esculenta) 시험양식 국내 첫 보고
유해균(Hae-Kyun YOO),이기욱(Ki-Wook LEE),김동휘(Dong-Hwi KIM),김기승(Gi-Seung KIM),김우진(Woo-Jin KIM),임현정(Hyun-Jung LIM),정민민(Min-Min JUNG) 한국수산해양교육학회 2023 水産海洋敎育硏究 Vol.35 No.6
The present study was investigated to determine the aquaculture possibility of cuttlefish (Sepia esculenta) in the open tank. The broodstock cuttlefish were purchased at Sacheon port in the South sea of Korea. The broodstock cuttlefish were transported to East Sea Fisheries Research Institute and were spawned in an indoor tank. Approximately 50,000 eggs were transferred to the open tank in early May, when the water temperature was maintained at around 20℃. The opossum shrimps were placed in an open tank to be used as feed for hatched cuttlefish. For growth, 10 cuttlefish were randomly selected once a month and their mantle length (ML) and body weight (BW) were measured. The average ML and BW for hatched cuttlefish were 0.55 cm and 0.06 g. After 2 months, ML and BW were 4.5 cm and 10.1 g. After 4 months, ML and BW were 13.8 cm, 258.3 g, and after 6 months, ML and BW were 17.4 cm and 567.0 g. In this study, it was found that there was a difference in growth between individuals, but the confirmation of fast-growing cuttlefish suggests the aquaculture possibility of cuttlefish in the open tank. Cuttlefish farming is expected to succeed through technological methods that can select and breed fast-growing individuals and reach on growth improvement in the future.
S-469 GDF 15 as a novel biomarker in patients with IgA nephropathy
( Hae Ri Kim ),( Dae Eun Choi ),( Ki Ryang Na ),( Yoo Hyung Kim ),( Hyo Kyun Chung ),( Min-kyung Yeo ),( Jin Young Jeong ),( Koon Soon Kim ),( Kang Wook Lee ) 대한내과학회 2016 대한내과학회 추계학술발표논문집 Vol.2016 No.1
Introduction: Growth differentiation factor 15 (GDF 15) is a member of the transforming growth factor-β superfamily. GDF 15 was reported as a potentially useful prognostic marker in patients with chronic inflammatory disease and heart disease. However, no prognostic biomarkers have been identified for IgA nephropathy. We evaluated the possibility that GDF 15 could serve as a prognostic predictor of renal outcome in immunoglobulin A nephropathy (IgAN). Methods: The study included 212 patients in the Chungnam National Hospital glomerulonephritis cohort who were diagnosed with biopsy-proven IgAN from March 2010 to June 2014. Blood samples were stored at -80°C. GDF 15 was analyzed by an enzyme-linked immunosorbent assay. Correlations were evaluated among initial serum GDF 15, blood urea nitrogen levels, serum creatinine level, and estimated glomerular filtration rate (eGFR). Results: GDF 15 correlated well with initial eGFR (R=?0.649), and the mean serum GDF 15 level correlated with chronic kidney disease (CKD) stage. A GDF 15 level > 496.32 pg/mL showed 90% sensitivity and 72.9% specificity for predicting the need for hemodialysis within 2 years of diagnosis, and > 490.4 pg/mL showed 63.64% sensitivity and 65% specificity for predicting a decline in eGFR > 30 ml/min in 1 year. In addition, the initial serum GDF 15 level was associated with the development of interstitial fibrosis/tubular atrophy. Conclusions: The initial serum GDF 15 level was a useful disease severity and prognostic biomarker in patients with IgA nephropathy.
유리섬유 강화 폴리올레핀케톤 복합재료의 제조 및 특성에 대한 연구
조해석 ( Hae Souk Cho ),정재승 ( Jae Seung Chung ),백승조 ( Seung Jo Beak ),최원재 ( Won Jae Choi ),김진주 ( Jin Joo Kim ),윤성균 ( Sung Kyun Yoo ),이종찬 ( Jong Chan Lee ) 한국공업화학회 2012 공업화학 Vol.23 No.3
우수한 기계적 강도를 가지고 있는 폴리올레핀케톤 고분자를 합성하고, 우레탄과 아미노실란으로 표면 처리 된 유리 섬유를 도입하여 엔지니어링 플라스틱용 복합재료를 제조하였다. 유리섬유와 폴리올레핀케톤의 상용성을 확인하기 위해 주사 전자 현미경으로 복합재료의 파단면 형상을 확인하였고, 함유된 유리섬유의 크기와 양, 그리고 바인더의 종류에 따른 복합재료의 기계적 물성을 관찰하였다. 적절한 표면처리를 한 유리섬유로 강화된 폴리올레핀케톤 복합재 료는 좋은 계면 상용성을 보이며 향상된 기계적 강도를 가지고 엔지니어링 플라스틱 분야에서의 응용 가능성을 확인 할 수 있었다. Poly (olefin ketone) terpolymer having excellent mechanical properties was synthesized and composite materials of poly (olefin ketone) containing polyurethane/amino silane functionalized glass fibers were prepared. The compatibilities between the functionalized glass fiber and the polymer were characterized by observing the fracture surfaces of the composites using scanning electron microscopy (SEM). Mechanical properties of composites with different contents, diameters, lengths, and binders of glass fibers were also studied using universal testing machine (UTM). The introduction of suitably functionalized glass fiber into the poly (olefin ketone) produces composite materials having excellent mechanical properties and they are very promising alternative materials for the engineering plastic applications.
Microsatellite Instability in Coloretal Cancer
Jeon, Hae Myung,Yoo, Seung Jin,Kim, Nam Il,Kim, Jeong Soo,Chang, Suk Kyun,Kim, Jae Sung CATHOLIC MEDICAL CENTER 1996 Bulletin of the Clinical Research Institute Vol.21 No.1
Microsatellites are short nucleotide repeat sequences present throughout the human genome. Alterations of microsatellites, comprising extra or missing copies of these sequences, have been termed microsatellite instability(genetic instability, replication errors, RER(+) phenotype). Spontaneous errors in DNA replication have been suggested to play a significant role in neo-plastic transformation and to explain the chromosomal alteration seen in cancer cell. We have studied six di , tri or tetranucleotide repeat loci, located on six different chromosomes by use of polymerase chain reaction amplification and denaturing polyacrylamide gel electrophoresis. We found that 9 of 46 (19.6%) sporadic colorectal cancers showed RER at two or several loci (RER(+)). Microsatellite instability was significantly associated with location of the tumor in the proximal colon (67%) and with poorly differentiated tumor phenotype(56%). These clinicopathological features in microsatellite instability of the colorectal cancer strongly similar to tumor from patients with HNPCC(Hereditary Non Polyposis Colorectal Cancer). These data in heritable HNPCC gene and microsatellite instability is closely associated to neoplastic transformation.
하호균,오석전,조해동,유영락,김남규,정환영 대한신경외과학회 1984 Journal of Korean neurosurgical society Vol.13 No.3
A rare case of surgically extirpated intra- and extracranial metastasis of hepatocellular carcinoma is reported. This dumb-bell shaped tumor simulated malignant meningioma on computerized tomography brain scan and cerebral angiography. Removal of the mass was successfully achieved by external carotid ligation and CUSA dissection. We suggest that, when investigating patients with suspected cranial secondaries particulary if there is a bony involvement, serum α-fetoprotein and hepatic ultrasound should be carried out as screening procedures.
미세술식과 일반술식으로 시행한 요추 추간판 수술의 비교관찰 : Comparative Study
하호균,오석전,조해동,유영락,김남규,정환영 대한신경외과학회 1983 Journal of Korean neurosurgical society Vol.12 No.4
To obtain wider versatility and greater reach in microsurgical lumbar discectomy, modified procedure has been performed on 263 patients in 1979-1983. It consisted of a smaller midline incision, removal of lateral half of the spinous process, partial but sufficient microdrilling of the lamina, use of a modified slender Taylor retractor, flavotomy, preservation of epidural adipose-areolar tissue etc. Particularly a slender Taylor-Chung retractor offered yielding surgical opening and therefore secured free insertion of pituitary forceps to every direction. The microsurgical results including 72 bisegmental and 8 trisegmental discectomies were compared with those of standard operations of same number performed by same surgeon in 1972-1979, for the good contrast. Mean blood loss per operation was 94㎖ with the standard discectomy and 4.6㎖ with microsurgery. Dural tear occured in 17 cases undergoing standard operation and in 3 undergoing microsurgery. The mean time until return to duty was 8.6 weeks with the standard, compared with 4.2 weeks. In the microsurgical group, 3 patients had postoperative discitis while 2 had in the standard. In this series, the results of microsurgery surpasses the standard in the convalescent phase. Major advantages of this modified microsurgical technique were its ability to secure the greater reach to remove disc material as much as possible and to preserve the integrity of normal tissue better.