개에서 발생한 이버멕틴 중독증 1례

여동원,윤기영,박정호,이왕희,송근호,박성준 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2011 動物醫科學硏究誌 Vol.18 No.1

A 1-year old, intact male Jin-do dog with ataxia, hypersalivation and anorexia was referred to the Veterinary Medical Teaching Hospital of Chungnam National University. Ivermectin toxicosis was diagnosed by the history taking, clinical signs, physical examination and neurological examination. After therapy with intravenous fluid and lipid emulsion administration, the clinical signs were found to have significantly improved.

슬개골 골절의 수술적 치료

김동휘,김정만,고인준 대한골절학회 2004 대한골절학회지 Vol.17 No.4

목적 : 슬개골 골절 치료의 일반적 치료 지침을 얻고자 하였다. 대상 및 방법 : 평균 2.2년간 추적이 가능하였고 내고정을 시행한 23례를 대상으로 하였다. 주 고정 방법은 금속 나사 7례, Dall-Miles' cable을 이용한 환상 강선 고정 14례, 그리고 이들 두 가지 방법의 겸용이 2례였다. 추가 공정으로는 장력대 강선 고정 9례, 부하배분케이블 고정 3례 그리고 이들 두 가지 겸용이 5례였다. 수술 후 고정은 굴곡위로, 가능하면 90°고정을 7일간 시행하였다. 결과 : 전 예에서 유의한 골편 전위 없는 골유합이 이루어졌다. 일 례를 제외한 전 례에서 완전 운동 범위를 얻을 수 있었다. 결론 : 고정 방법의 선택은 골절의 분쇄 정도, 골의 강도, 골절 부위 및 연부 조직의 손상 정도에 따른 개별화가 필요하다. 강력한 고정, 초기 굴곡위 고정과 조기 관절운동으로 좋은 결과를 얻을 수 있었다. Purpose : To establish general guide line in the treatment of the patellar fracture. Materials and Methods : Twenty three patellar fractures followed for 2.2 years in average, treated with internal fixation were evaluated retrospectively. The primary fixations were the metal screw fixation in 7, the Dall-Mlles' cable circumferential fixation in 14 and combination of both methods in 2 cases. The additional fixations were the tension band wiring in 9, the load sharing cable fixation in 3 and combination of both methods in 5 cases. The initial postoperative immobilazation of the knee joint in flexion, preferably 90°, for 7 days was effective to gain full range of motion. Results : Complete union without displacement was achieved in all cases. Full ROM was achieved in all cases except one. Conclusion : The choice of internal fixation need to be individualized according to the level of comminution, bone strength, fracture site and soft tissue damage. A strong internal fixation, initial immobilization in flexion followed by early ROM exercise were important factors to gain good result.

상완골 근위부 골절 치료에서 잠김 압박 금속판의 유용성

김동휘,이준영,조승환,양훈,하상호 朝鮮大學校 附設 醫學硏究所 2009 The Medical Journal of Chosun University Vol.34 No.1

Purpose: To prove the efficacy of locking compression plate (LCP) in proximal humerus fracture. Materials and Methods: Forty four out of 48 patients who had proximal humerus fracture operation with LCP from November, 2004 to June, 2008 and available for follow up for more than 6 months were evaluated. Eighteen cases were male and 26 cases were female with mean age of 56 years (range 29-85 years). Cause of injury was traffic accident in 17 cases, slip down in 20 cases and fall down in 7 cases. Mean interval from injury to operation was 6.8 days (range 2-30 days) and mean operation time was 80. 5 minutes(range 40-130 minutes). Open reduction and internal fixation with LCP using deltopectoral approach was used in all cases. Postoperative clinical evaluation was done using Constant-Murley assessment and bone union and neck-shaft angle was checked using radiographic exam. Results: Bone union was achieved in 41 out of 44 cases at mean interval of 11.2 weeks(range 6-16 weeks). Mean neck-shaft angle was 129.7 degree (range 101-146) with more than 20 degree of angular deformation in 2 cases. For the complication, 2 cases of temporary axillary nerve injury, 1 case of nonunion, 2 case of delayed unions with angulation, 2 case of ankylosis was observed. Conclusion: LCP can prevent reduction loss and minimize soft tissue injury which result in firm fixation and early immobilization. It seem to be very efficient in treating proximal humerus fracture in elderly.

솔-젤공정에 의한 한외알루미나 여과막의 기공보정에 관한 연구

채만병,조원준,정은정,이진휘,서동호 서울産業大學校 1996 논문집 Vol.44 No.1

서로 다른 입자 크기의 3층 구조를 갖는 튜브 형태의 한외 알루미나 분리막은, 일반적으로 제조공정중 분리층에 결손부분이 발생하기 때문에 낮은 선택도 및 제거율을 보인다. 이와같은 결손부분을 보정하기위하여 습도조절에 의한 선택적 적심(alternative wetting by controlled humidity)을 한 수 colloidal silical 솔을 적용하여 처리하고 특성을 평가 하였다. Sealing처리한 분리막에 대한 누수여부를 평가하기 위하여 3가지의 염료로 조사하였고, 보정전분리막과 보정후분리막에 대한 SEM, 액체으 투고도, 선택도 및 P.E.G./물 혼합물의 제거율을 측정하였다. P.E.G 2000, 12000 및 35000에 대한 제거율은 각각 약 0.6, 18 및 17% 향상된 결과를 보였으나 colloidal silica 솔의 deposition에 기인하여 투과율의 감소는 77%였다. 이상의 결과에서 보면 습도조절에 의한 선택적 적심법은 비록 deposition에 의한 문제점을 내포하고 있으나 액체분리를 위한 알루미나 한외여과막의 보정에 효과적인 방법이다. The 3-layer type alumina membrane consisting of different pore size shows the decreased selectivity and rejection because of cracks in the separation layer generally occurred during the manufacturing process. To modify these cracks, the colloidal sol is applied by sol-gel process after treating by alternative wetting method using controlled humidity(Alternative Wetting Method by controlled humidity) and evaluated the characteristics. For the evaluation of the leakage for the sealed membrane, the sealed membranes were tested by 3 kinds of dyes. For the comparing of native and modified membranes, the modified membranes for the cracks treated by Alternative Wetting Method by controlled humidity were also tested by SEM, permeability by liquid equipment, selectivity and rejection of the P.E.G./water mixtures. The results showed that the rejections were increased ca. 0.6, 18 and 17 % for the P.E.G. polyethyleneglycol 2000, 12000 and 35000 individually. The permeabilities are decreased, however, 77% for the pure water caused by deposition of colloidal silica sol after caulking. In conclusion, the Alternative Wetting Method by humidity control had the effect for the modification of ultrafiltration alumina membrane for separation of liquids and gases, though having problem of deposition.

Type 2 Autoimmune Pancreatitis (Idiopathic Duct-Centric Pancreatitis) Highlighting Patients Presenting as Clinical Acute Pancreatitis: A Single- Center Experience

Dong Wook Oh,Tae Jun Song,Sung-Hoon Moon,Jin Hee Kim,Joo Nam Lee,Seung Mo Hong,Joune Seup Lee,Seok Jung Jo,Dong Hui Cho,Do Hyun Park,Sang Soo Lee,Dong-Wan Seo,Sung Koo Lee,Myung-Hwan Kim 거트앤리버 소화기연관학회협의회 2019 Gut and Liver Vol.13 No.4

Background/Aims: Type 2 autoimmune pancreatitis (AIP) has been considered extremely rare in East Asia. This study aimed to clarify the prevalence, clinical characteristics and radiological findings of type 2 AIP highlighting patients presenting as acute pancreatitis in a single center. Methods: Type 2 AIP patients were classified according to International Consensus Diagnostic Criteria. Radiological findings were compared between type 2 AIP presenting as acute pancreatitis and gallstone pancreatitis. Results: Among 244 patients with AIP, 27 (11.1%) had type 2 AIP (definite, 15 [55.5%] and probable 12 [44.5%]). The median age of patients with type 2 AIP was 29 years (interquartile range, 20 to 39 years). Acute pancreatitis was the most common initial presentation (n=17, 63%) while obstructive jaundice was present in only one patient. Ulcerative colitis (UC) was associated with type 2 AIP in 44.4% (12/27) of patients. Radiological pancreatic imaging such as delayed enhancement of diffusely enlarged pancreas, homogeneous enhancement of focal enlargement/ mass, absent/minimal peripancreatic fat infiltration or fluid collection, and multifocal main pancreatic duct narrowings were helpful for differentiating type 2 AIP from gallstone pancreatitis. During follow-up (median, 32.3 months), two patients (2/25, 8%) experienced relapse. Conclusions: In South Korea, type 2 AIP is not as rare as previously thought. Overall, the clinical profile of type 2 AIP was similar to that of Western countries. Type 2 AIP should be considered in young UC patients with acute pancreatitis of uncertain etiology.

Screening of anti-Nosema substances from entomopathogenic fungi by polar tube germination assay

Dong Jun Kim,Won Seok Gwak,Yong Oh Ahn,Seung Hee Lee,In Hui Kim,See Nae Lee,Dong Woo Kim,Tae Young Shin,Sung Min Bae,Soo Dong Woo 한국응용곤충학회 2015 한국응용곤충학회 학술대회논문집 Vol.2015 No.10

The population of managed honey bees has been dramatically declining the recent past in worldwide. The one of most common disease of bees is nosemosis, the nosemosis is caused by microsporidia in the genus Nosema. Nosema apis and N. ceranae have been described as honeybee pathogens. These microsporidia are highly evoloved fungi with an obligately intracellular parasitic lifstyle. The disease causes significant detriment to honey production and results in economic losses. In our knowledge, Fumagillin is the only antibiotic approved for control of nosemosis in honey bees, however this antibiotic may have unintended effects on the honey bee host, ultimately contributing to increased prevalence and pathogenicity of Nosema. Therefore, we screened anti-Nosema substances from entomopathogenic fungal culture filtrates using in vitro polar tube germination assay. These fungal metabolites are employed as antibiotic agents. As results, Total 3 samples (23% of 13 total samples) showing the germinating inhibition against N. ceranae. This screening method may be useful for the detection of anti-Nosema substances from various samples and selected samples in this study may be a good feature to be used in the development of a new biocontrol method of nosemosis.

Efficient Method for the Rapid Purification of Nosema ceranae Spores

( Dong-jun Kim ),( Hwi-geon Yun ),( In-hui Kim ),( Won-seok Gwak ),( Soo-dong Woo ) 한국균학회 2017 Mycobiology Vol.45 No.3

Nosema ceranae is an obligate intracellular fungal parasite that causes mortality in honey bees and enhances the susceptibility of honey bees to other pathogens. Efficient purification of Nosema spores from the midgut of infected honey bees is very important because Nosema is non-culturable and only seasonably available. To achieve a higher yield of spores from honey bees, in this study, we considered that the initial release of spores from the midgut tissues was the most critical step. The use of 2 mm beads along with enzymatic treatment with collagenase and trypsin enhanced the homogenization of tissues and the yield of released spores by approximately 2.95 times compared with the use of common 3 mm beads alone. The optimal time for the enzyme treatment was determined to be 1 hr as measured by the yield and viability of the spores. A one-step filtration using a filter paper with an 8-11 μm pore size was sufficient for removing cell debris. This method may be useful to purify not only N. ceranae spores but also other Nosema spp. spores.

Original Article : A Disintegrin and Metalloprotease with Thrombospondin Motif 2 May Contribute to Cirrhosis in Humans through the Transforming Growth Factor-β/SMAD Pathway

( Chao Dong ),( Han Jun Li ),( Shi Chang ),( Hui Jun Liao ),( Zhi Peng Zhang ),( Peng Huang ),( Hui Huan Tang ) 대한간학회 2013 Gut and Liver Vol.7 No.2

Background/Aims: We aimed to investigate the correlation between a disintegrin and metalloprotease with thrombospondin motif 2 (ADAMTS-2) and transforming growth factor-β1 (TGF-β1) in clinical human cirrhotic tissues. Methods: The liver tissues of 24 patients (16 cases with cirrhotic portal hypertension as the cirrhosis group and eight cases with healthy livers as the normal group) were collected. Immunohistochemistry and Western blots were performed to evaluate the protein expression levels of ADAMTS-2 and TGF-β1. Western blots for other key mediators of cirrhotic progression, including SMAD2, SMAD3, TGF-β receptor II (TGFβRII), matrix metalloproteinases 2 (MMP2), and tissue inhibitor of matrix metalloproteinases 2 (TIMP2), were also performed. Results: Cirrhotic tissues showed higher percentages of collagen. The protein expression levels of ADAMTS-2 and TGF-β1 were significantly higher in the cirrhotic group as compared to the matched normal group (p<0.05), and there was a positive correlation between these two proteins (r=0.862, p<0.01). The protein expressions of MMP2, TIMP2, and TGFβRII, as well as the phosphorylated forms of SMAD2 and SMAD3, were significant higher in the cirrhotic group (p<0.01 or p<0.05). Conclusions: These findings suggested that ADAMTS-2 and TGF-β1 may play important roles in the pathogenesis of human cirrhosis; specifically, TGF-β1 may induce the expression of ADAMTS-2 through the TGFβ/SMAD pathway. (Gut Liver 2013;7:213-220)

Association of Leptin Receptor Lys109Arg and Gln223Arg Polymorphisms with Increased Risk of Clear Cell Renal Cell Carcinoma

Mu, Hui-Jun,Zou, Jian,Xie, Ping,Xu, Zhuo-Qun,Ruan, Jun,Yang, Shu-Dong,Yin, Ying Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.10

Background: Although roles of genetic polymorphisms of leptin receptor (LEPR) gene in several cancers have been documented, the association between polymorphisms of LEPR and clear cell renal cell carcinoma (CC-RCC) remains unknown. The aim of this study was to explore any relation. Materials and Methods: The study population consisted of 77 patients with CC-RCC and 161 healthy control subjects. Polymorphism analyses of Lys109Arg and Gln223Arg were performed by direct DNA sequencing and PCR-restriction fragment length polymorphism approaches respectively. Results: Comparisons of allelic and genotypic frequencies in Lys109Arg and Gln223Arg showed no significant difference between the cases and controls. However, when evaluating the combined genotype of Lys109Arg and Gln223Arg, risk with GG/GG was increased (OR=1.85, 95%CI=1.04-3.30) and with GA/GG or GG/GA was decreased (OR=0.07, 95%CI=0.01-0.54; OR and 95%CI of the latter could not be calculated for a value of zero). Furthermore, the G-G haplotype frequency of Lys109Arg and Gln223Arg in the cases was higher (OR=1.68; 95%CI=1.02-2.76). In contrast, the A-G and G-A haplotype frequencies in the cases were lower than those in the controls (OR=0.06; 95%CI=0.01 to 0.47; OR and 95%CI of the latter could not be calculated for a value of zero). In addition, the Lys109Arg A allele was in LD with the Gln223Arg A allele (d'=0.9399) in the CC-RCC subjects, but not in the controls. Conclusions: Our data suggest that the GG/GG combined genotype and G-G haplotype of Lys109Arg and Gln223Arg can act as evaluating factors for CC-RCC risk.

2-Phase 3-Level ETSM With Mismatch-Free Duty Cycles Achieving 88.6% Peak Efficiency for a 20-MHz LTE RF Power Amplifier

Gwon, Hui-Dong,Bang, Jun-Suk,Yoon, Kye-Seok,Park, Se-Hong,Park, Sang-Hui,Jung, Min-Yong,Lee, Sang-Han,Kim, Min-Woo,Hong, Sung-Wan,Cho, Gyu-Hyeong Institute of Electrical and Electronics Engineers 2018 IEEE transactions on power electronics Vol.33 No.4

<P>This letter presents a 2-phase 3-level (2P3L) envelope tracking supply modulator (ETSM) for a long-term evolution 20 MHz (LTE20) radio frequency power amplifier as a solution for the ET system. This 2P3L ETSM that is composed of only switching converters achieves high efficiency, fast transient response, and a small output current ripple. To properly operate the proposed 2P3L ETSM, 4 pulse width modulatiop (PWM) signals with a 90° phase shift from each PWM signal are required without any mismatch between duty cycles. To remove the mismatch, a time-division multiplexing comparator and a duty-cycle calibrator are proposed. Thanks to the proposed techniques, the proposed ETSM fabricated in 0.18-μm CMOS achieved the highest peak dynamic efficiency of 88.6% with an LTE20 signal, which is superior to the state-of-the-art systems.</P>