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김덕한,송화영,이동훈 서울産業大學校 2005 논문집 Vol.54 No.1
This paper introduces a study for the noise reduction design of a range hood for household. Generally, range hoods have a built-in sirocco fan from which squawky noises are generated. Though the squawky noises have low noise level, these kinds of noises make most of the users nervous. For the purpose of noise reduction, in this study, a perforated panel system is installed in the fan housing of range hood. From the experimental results, it is confirmed that the noise level emitted from the range hood is decreased above 2dBA in all frequency regions.
Simple Sequence Repeat Primer에 의한 딸기의 Genomic DNA 분석
양덕춘,최성민,김무성,민병훈 경희대학교 생명자원과학연구원 2002 硏究論文集 Vol.22 No.-
본 연구는 진핵세포에 널리 산재되어있는 repeat sequence를 primer로 사용하여 딸기의repeat sequence 좌위를 증폭시켜서 분석하고 이를 같은 종일지라도 지역간의 차이로 인한 환경의 변화 또는 재배방법의 차이에 의해서 일어나는 변이를 분석하는 방법에 활용할 수 있도록 하기 위하여 수행하였다. GGC repeat sequence의 딸기 genomic DNA에 존재여부를 판명하기 위하여 (GGC)_(6) probe를 DIG을 사용하여 labeling하여 딸기 genomic DNA에 hybridization한 결과 확실한 spot이 나타났다. 또한 repeat sequence로 이루어진 UBC SSR primer 100개중에서 4가지 서로 다른 primer에서 선명한 band를 확인할 수 있어서 딸기의 genomic DNA내에 여러 종류의 repeat sequence가 있는 것으로 판단되었다. 따라서 각 품종별 표지로서 이용성을 알아보고자 PCR을 수행하였는 바 (ACC)_(6)와 (CCG)_(6)의 primer에서는 다른 band에 비해 매우 확실한 밴드를 형성하였다 이러한 PCR product의 염기서열분석을 위해 우선 대량증식을 위한 PCR의 적정 조건은 primer 10p㏖, DNA 50ng으로서 수행하는 것이 DNA의 증폭에 좋았다. 증폭된 1 Kb DNA 절편을 이용하여 염기서열을 조사하였던 바, 808bp의 서열을 알아냈고 그 반복염기서열은 효모와 사람에 존재하는 유전자이었으며 Cdontella sinensis와의 유의성 검정결과 ACC 반복염기에 62% 동일성을 나타내었다. This study was carried out to investigate genetic variation caused by environmental change or cultural method difference, which was performed by amplifying repeat sequence loci of strawberry widely dispersed in eukaryotic cell. DIG labeled(GGC)_(6), probe was used to test if GGC repeat sequence exists in strawberry genomic DNA, resulting in clear spot on the filter. Among the 100 UBC SSR primers which contain repeat sequence, four different primers amplified clear DNA fragments, suggesting that the repeat sequence exist in the genome of strawberry. PCR was also performed to test whether these primers could be used for a marker among strawberry cultivars. (ACC)_(6), (No. 861) and (CCG)_(6) (No. 865) primers showed very clear bands compared to the other primers. The amplified 808 bp of 1 kb DNA was sequenced, and database search using the sequence information showed that the repeat sequence was the gene existed both in yeast and human, and a significant sequence homology to Odontella sinensis was found.
Clinical Outcomes of Late Conversion to Once-Daily Tacrolimus after Liver Transplant
( Deok Gie Kim ),( Yoon Bin Jung ),( Jee Youn Lee ),( Jae Geun Lee ),( Sung Hoon Kim ),( Han Dai Hoon ),( Man Ki Ju ),( Gi Hong Choi ),( Jin Sub Choi ),( Myoung Soo Kim ),( Soon Il Kim ),( Dong Jin Jo 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1
Aims: Since a once-daily tacrolimus (TAC-OD) has been introduced in the field of transplantation, many studies reported advantages of the new drug, such as the better adherence and the less intrapatient variability than the twice-daily tacrolimus (TAC-TD). Recently, promising results were announced regarding better clinical outcomes of the early conversion to TAC-OD in liver transplant patients. In this study, we investigated clinical outcomes of late conversion to TAC-OD more than 6 months after transplantation. Methods: A total 281 patients who received liver transplant patient from January 2012 to January 2017 took TAC-TD from operation. Of them, 38 patients were converted to TAC_OD 6 months after transplantation, while others remained with TAC-TD. We compared graft survival and postoperative complication between two groups, especially with regard to biliary complication known as implication of chronic rejection. Results: Among the patients, 151 were living donor liver transplantation. There was no difference in demographics and operative characteristics between two groups. Biliary stricture occurred later after 6 month after transplantation was 18 (7.4 %) in TAC-TD and 2 (5.3 %) in TAC-OD. The cumulative incidence was not statistically different. However, overall graft survival rate was significantly higher in TAC-OD than that in TAC-TD (P=0.049). Biliary stenosis free survival was also higher without significance (P=0.065). Adverse event of drug was similar between two groups. Conclusions: Late conversion to TAC-OD was safe and feasible. It has advantages of graft survival compared to TAC-TD.
( Tae Hoon Kim ),( Na Hye Kim ),( Jin Dong Kim ),( Young Nam Kim ),( Yu Jin Kim ),( Eun Jung Kim ),( Ki Deok Yoo ),( Choong Heon Ryu ),( Ha Hun Song ),( Hyun Kim ) 대한간암학회 2021 대한간암학회지 Vol.21 No.2
Background/Aims: Surgical resection, transplantation, and radiofrequency ablation (RFA) are generally accepted as amenable treatments for small hepatocellular carcinoma (HCC). Recently drug-eluting beads (DEB) which had several treatment advantages were introduced for transarterial chemoembolization (TACE). The aim of this study was to evaluate feasibility and safety of DEB-TACE compared with RFA for the treatment of single small HCC. Methods: In this pilot non-randomized trial, we assessed retrospective data of 40 patients who underwent DEB-TACE (n=21) or RFA (n=19) for single small (≤3 centimeter in greatest dimension) HCC. The primary outcomes were tumor response and time to recurrence. The secondary outcome was treatment-related complications. Results: Complete response rate to DEB-TACE and RFA after first follow-up assessment was 90.5% and 94.7%, respectively (P=1.000). During mean follow-up of 87.6 months (95% confidence interval, 74.4-102), 7 patients experienced local recurrence. The 6- and 12-month cumulative local recurrence rate was 5.0% and 21.8% in DEB-TACE vs. 11.1% and 17.0% in RFA group (P=0.877). A total 14 distant intrahepatic recurrences were developed and 12- and 24-month cumulative distant intrahepatic recurrence rate was 20.6% and 42.7% in DEBTACE vs. 17.2% and 36.3% in RFA group (P=0.844). Two patients experienced gangrenous cholecystitis after DEB-TACE requiring cholecystectomy as treatment-related adverse event. Conclusions: Tumor response and recurrence rate after single session of DEB-TACE or RFA were similar. DEB-TACE could be applied selectively in patients with a single small HCC if the other therapeutic modality is unfeasible. (J Liver Cancer 2021;21:146-154)
증례 : 류마티스 ; 강직성 척추염 환자에서 동반된 급성 횡단성 척추염
황덕원 ( Deok Won Hwang ),김재훈 ( Jae Hoon Kim ),김진주 ( Jin Ju Kim ),김은경 ( Eun Kyoung Kim ),김은미 ( Eun Mi Kim ),김현영 ( Hyun Young Kim ),김태환 ( Tae Hwan Kim ) 대한내과학회 2011 대한내과학회지 Vol.80 No.2S
급성 횡단성 척추염은 강직성 척추염에서의 염증성 요통과 다른 양상의 기계적 요통을 유발하며, 드물게 발생하지만 빠른 진단과 치료가 예후를 결정한다. 강직성 척추염과 급성횡단성 척추염과의 연관 관계는 아직 확실하지 않으나, 강직성 척추염에서 동반되는 신경학 증상과 유사한 병인을 가지며, 강직성 척추염에 병발된 급성 횡단성 척추염의 예가 보고된 바 있다[4,6]. 따라서 강직성 척추염 환자가 호소하는 요통에 대해 접근할 때 요통의 양상에 대한 정확한 문진이 필요하며 동반된 신경학적 증상의 유무도 살펴보는 것이 중요하다. Neurological manifestations as extra-articular features of ankylosing spondylitis (AS) have not been reported often, and present as root lesions, cauda equina syndrome, and compression of the spinal cord. We report a 31-year-old man who complained of back pain and claudication of both lower extremities. The patient showed typical inflammatory back pain and significant sacroiliitis, consistent with AS. He also had mechanical back pain and unexplained neurological symptoms. A neurological evaluation, including spinal magnetic resonance imaging and a cerebrospinal fluid study, revealed that the patient had acute transverse myelitis (ATM). ATM can be associated with connective tissue diseases. The pathophysiology of ATM consists primarily of inflammatory disorders, similar to the neurological complications of AS. We suggest that ATM is a possible extra-articular manifestation of AS. (Korean J Med 2011;80:S314-S318)
In vivo efficacy of HD-047703: a novel GPR119 agonist for the treatment of type 2 diabetes mellitus
So Ra Kim,Chun Hwa Kim,Young-Seok Kim,Doo-Young Kim,Tae-Young Ha,Goeun Yang,Jae Bum Park,So Youn Kim,Hyo-sun Choi,Deok Hee Lee,Jae Keol Rhee,Dae-Hoon Kim 한국실험동물학회 2013 한국실험동물학회 학술발표대회 논문집 Vol.2013 No.2
피부 병원균에 대한 톱니모자반 추출물의 항균 시너지 효과
김윤혜(Yun Hye Kim),김지훈(Ji-Hoon Kim),김덕훈(Deok-Hoon Kim),김송희(Song-Hee Kim),김형락(Hyeung-Rak Kim),김영목(Young-Mog Kim) 한국식품과학회 2016 한국식품과학회지 Vol.48 No.3
S. aureus, S. epidermidis, P. aeruginosa, P. acnes와 C. albicans는 사람의 피부에서 발생하는 질병과 밀접한 관련을 가지는 대표적인 병원성 미생물로 알려져 있다. 본 연구에서는 해조류 중에서도 항균 활성에 대한 연구가 미미한 모자반을 대상으로 피부 병원균에 대한 항균 효과를 조사하였다. 국내의 연해에 자생하는 7종의 모자반 추출물 중에서 disc diffusion assay와 MIC assay를 통해 가장 뛰어난 항균 효과를 나타낸 톱니모자반을 후속 연구를 위한 후보 물질로 선정하고 연구를 진행하였다. 톱니모자반 추출물의 유기용매 분획층 중에서, 노말-헥세인 분획층이 S. aureus, S. epidermidis, P. aeruginosa, P. acnes 및 C. albicans에 대한 MIC값이 32-256 μg/mL로 가장 뛰어난 항균 활성을 나타내었다. 이에 피부 병원균들에 대한 치료제로 사용되고 있지만 내성균의 출현으로 효능이 거의 없는 항생제들인 테트라사이클린, 에리트로마이신, 린코마이신과 플루코나졸과 항균 활성이 뛰어난 것으로 나타난 톱니모자반의 노말-헥세인 분획층과의 병용 사용에 의한 항균 시너지 효과를 조사하였다. 그 결과, 톱니 모자반 노말-헥세인 분획층과 이들 항생제와의 병용 사용에 의해 피부 병원균에 대한 항생제와 톱니모자반 노말-헥세인 분획층의 MIC값이 4-32배 감소되었고, 톱니모자반 노말-헥세인 분획층과 이들 항생제와의 병용 시 median FIC값이 0.26-0.55로 항균 시너지 효과를 나타내었다. 즉, 항생제와 톱니모자반 노말-헥세인 분획층과의 병용 사용은 피부 병원균에 대한 이들 항생제의 감수성을 회복시키는데 크게 기여하는 것으로 나타났다. The object of this study was to develop an alternative way to treat human skin pathogens using marine algae. During this study, we observed that the ethanolic extract of the edible brown algae [Sargassum serratifolium (C. Agardh) C. Agardh] exhibited potential antimicrobial activity against pathogenic commensal bacteria related with acne vulgaris (Propionibacterium acnes, Staphylococcus epidermidis, Staphylococcus aureus and Pseudomonas aeruginosa), and Candida albicans which causes cutaneous candidiasis. Among the solvent-soluble fractions from the ethanolic extract, a hexane-soluble fraction showed the strongest antimicrobial activity against all tested human skin pathogens with MIC values ranging from 32 to 512 μg/mL. In addition, the hexane fraction exhibited a synergistic antimicrobial activity with commercial antibiotics used in the treatment of acne vulgaris or cutaneous candidiasis. Thus, this study suggests that S. serratifolium extract could be a potential source of natural antimicrobial agents or a pharmaceutical component against human skin pathogens.