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Moon, Seok-Jun,Shin, Dong-Jin,Kim, Beom-Gi,Byun, Myung-Ok The Korean Society of Plant Biotechnology 2012 식물생명공학회지 Vol.39 No.2
Glycolysis is responsible for the conversion of glucose into pyruvate and for supplying reducing power and several metabolites. Fructose-1,6-bisphosphate aldolase (AtFBA1), a central enzyme in the glycolysis pathway, was isolated by functional complementation of the salt-sensitive phenotype of a calcineurin (CaN)-deficient yeast mutant. Under high salinity conditions, aldolase activity and the concentration of NADH were compromised. However, expression of AtFBA1 maintained aldolase activity and the NADH level in yeast cells. AtFBA1 shares a high degree of sequence identity with known class I type aldolases, and its expression was negatively regulated by stress conditions including NaCl. The fusion protein GFP-AtFBA1 was localized in the cytosol of Arabidopsis protoplasts. The seed germination and root elongation of AtFBA1 knock-out plants exhibited sensitivity to ABA and salt stress. These results indicate that AtFBA1 expression and aldolase activity is important for stress tolerance in yeast and plants.
Moon, Seok-Jun,Han, Se-Youn,Kim, Dool-Yi,Kim, Beom-Gi,Yoon, In Sun,Shin, Dongjin,Kwon, Hawk-Bin,Byun, Myung-Ok 한국식물학회 2014 Journal of Plant Biology Vol.57 No.3
WRKY transcription factors play a major role in plant biotic and abiotic stress responses. In this study, WRKY transcription factor, CaWRKY1, whose expression was strongly induced by cold and abscisic acid treatment in pepper, was cloned into potato via Agrobacterium-mediated transformation of vector expressing CaWRKY1 under control of the CaMV35S promoter. The overexpression of CaWRKY1 in potato plants increased tolerance to drought stress without noticeably affecting other agricultural important factors, such as plant height, leaf size and tuber formation. In addition, CaWRKY1-overexpressing transgenic potato plants showed increased expression of abiotic stress-related genes, such as C-REPEAT BINDING FACTOR 3 (CBF3), ZINC FINGER PROTEIN ZAT10 (ZAT10), TREHALOSE-6-PHOSPHATE SYNTHASE (TPS) and LATE EMBRYOGENESIS ABUNDANT (LEA). These results suggest that CaWRKY1 can regulate drought stress tolerance in potato plants via the activation of putative stress-responsive genes.
Trismus Due to Bilateral Coronoid Hyperplasia
Choi, Moon Gi,Kim, Dong Hyuck,Ki, Eun Jung,Cheon, Hae Myung Korean Association of Maxillofacial Plastic and Re 2014 Maxillofacial Plastic Reconstructive Surgery Vol.36 No.4
Bilateral coronoid hyperplasia causes painless progressive trismus, resulting from coronoid process impingement on the posterior aspect of the zygomatic bone. The etiology of coronoid hyperplasia is unclear, with various theories proposed. An endocrine stimulus, increased temporalis activity, trauma, genetic inheritance and familial occurrence have all been proposed, but no substantive evidence exists to support any of these hypotheses. Multiplanar reformatting of axial scans and 3-dimensional reconstruction permit precise reproduction of the shape and size of the coronoid and malar structures, and relationships of all structures of the temporal and infratemporal fossae. This case shows remarkably increased mouth opening by coronoidectomy in a patient who complained of trismus due to hyperplasia of coronoid process.
Hyun-Gi Lee,Tae-Hee Lee,Jung-Ha Kim,Ju-Won Seok,Seung-Hoon Lee,Yong-Hwan Kim,Jin-Eung Kim,Myung-Jun Chung,Moon-Hwan Yeo 대한의생명과학회 2010 Biomedical Science Letters Vol.16 No.4
Although an adequete intake of calcium (Ca) is recommended for the treatment and prevention of osteoporosis, the intake of Ca should be restricted because of its low rate of intestinal absorption. The purpose of this experiment was to identify the effect of the combined administration of Aquamin F (AQF) (a calcium agent) and lactic acid bacteria (LAB) on osteoporosis. Thirty ovariectomized (OVX) rats and six control rats were assigned to the following six groups, with six animals per group: sham Ca-deficient diet (Ca-D), OVX, LAB, AQF, and LAB-AQF. During the experiment, the body weight was measured; and after the experiment was completed, the serum biochemical analysis, the alkaline phosphatase, calcium, and inorganic phosphorus leves were measured. The tissue of the femur was stained and then scanned via CT. The body weight of the OVX group increased more significantly than that of the control group. The results of the bone mineral content (BMC), Bone mineral density (BMD), serum biochemical analysis and histological test on the femur epiphysis showed no difference between the OVX group and the LAB group, whereas the results of the AQF group were more significant than those of the OVX group. In particular, the LAB+AQF group showed more significant increases in the aforementioned results than the AQF group. This experiment showed that the combined administration of AQF and LAB in ovariectomized rats more significantly increased bone density than did a single administration of either AQF or LAB.
Yeo, Moon-Hwan,Seo, Jae-Gu,Chung, Myung-Jun,Lee, Hyun-Gi The Korean Society of Animal Reproduction 2010 Reproductive & developmental biology Vol.34 No.4
To identify the treatment effect of lactic acid bacteria for diabetes, the treatment effects of a single administration of acarbose (a diabetes treatment drug) or lactic acid bacteria, and the mixture of acarbose and lactic acid bacteria on diabetes in a type 1 diabetes animal model, were studied. In this study, streptozotocin was inoculated into a Sprague-Dawley rat to induce diabetes, and sham control (Sham), diabetic control (STZ), STZ and composition with live cell, STZ and composition with heat killed cell, STZ and composition with drugs (acarbose) were orally administered. Then the treatment effect on diabetes was observed by measuring the body weight, blood glucose, and serum lipid. For the histopathological examination of the pancreas, the Langerhans islet of the pancreas was observed using hematoxylin and eosin staining, and the renal cortex, outer medullar, and inner medullar were also observed. The induced diabetes decreased the body weight, and the fasting blood glucose level decreased in the lactic-acid-bacteria-administered group and the mixture-administered group. In addition, the probiotic resulted in the greatest decrease in the serum cholesterol level, which is closely related to diabetes. Also, the hematoxylin and eosin staining of the Langerhans islet showed that the reduction in the size of the Langerhans islet slowed in the lactic-acid-bacteria-administered group. The histopathological examination confirmed that the symptoms of diabetic nephropathy decreased in the group to which viable bacteria and acarbose were administered, unlike in the group to which dead bacteria was administered. The mixture of lactic acid bacteria and acarbose and the single administration of lactic acid bacteria or acarbose had treatment effects on the size of the Langerhans islet and of the kidney histopathology. Thus, it is believed that lactic acid bacteria have treatment effects on diabetes and can be used as supplements for the treatment of diabetes.
승모판탈출증에서 Doppler 심초음파를 이용한 승모판폐쇄 부전증의 빈도와 중증도에 대한 관찰
이문호(Moon Ho Lee),배종화(Jong Hoa Bae),송정상(Jung Sang Song),김명식(Myung Shick Kim),김권삼(Kwon Sam Kim),조정휘(Chung Whee Choue),이기영(Gi Young Yi) 대한내과학회 1987 대한내과학회지 Vol.33 No.3
N/A Mitral valve prolapse is increasingly recognized as a common cause of severe pure mitral regurgitation. Overall prevalence and severity of mitral regurgitiation in mitral valve prolapse syndrome is not sitll unknown, Doppler Echocardiography is reliable and sensitive method in detecting mitral regurgitation and quantifying its severity. We investigated the prevalence and the severity of mitral regurgitation in patients with mitral prolapse syndrome by using Doppler Echocardiography. The following results are obtained; 1) The incidence of mitral regurgitation in patients with mitral valve prolapse as assessed by Doopler Echocardiography was high (95%), the rate of symptomatic patient was 70% and systolic murmur was audible only in 35% of patients. 2) Significant mitral regurgitation was not uncommon (28%) in patient with mitral valve prolapse. 3) Left atrial and left ventricular size were significantly larger in patients with moderate or severe regurgitation (3.6±0.4 cm, 5.9±0.3 cm) as compared with patients with mild or no regurgitation (3.1±0.5 cm, 4.8±0.4 cm). 4) Even at young age (at the age of 14-44) significant mitral regurgitation may occur in patients with mitral valve proapse (12 patients).