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경막 내 colistimethate 투여로 치료한 다제 내성 cinetobacter baumannii 뇌실염
홍유아,유진홍,김진진,모은영,안건희,정희경,김진석,이현정,정미향,윤승배 대한감염학회 2009 감염과 화학요법 Vol.41 No.4
Acinetobacter species is a non-fermentative aerobic gram-negative coccobacillus that is an important pathogen found in nosocomial infections. Recently, multi-drug resistant Acinetobacter baumannii (MDR-AB) infections have been increasing and pose a serious problem. Most such infections present as bacteremia, pneumonia, or a wound infection; however, CNS infections are very rare. We herein present a case of ventriculitis caused by MDR-AB in a 37-year old man after a neurosurgical intervention. The patient was successfully treated with intrathecal colistimethate.
국내산 과일 및 채소 추출물을 이용한 체중 조절 관련 기능성 식품소재 탐색
김인혜;김종배;조강진;황유진;황경아;고정숙;엄애선 한양대학교 2011 韓國 生活 科學 硏究 Vol.31 No.1
Obesity can be defined as a disorder of lipid metabolism and the control of this process is regulated by enzymes involved in lipid metabolic pathway. Obesity is also characterized increases in the number and size of adipocyte differentiated from fibroblastic pre-adipocytes in adipose tissue. The aim of this study was to screen ethanol extracts of 21 fruits and vegetables cultivated in Republic of Korea for identifying natural sources of lipase inhibitor and to investigate the effects of several extracts resulting in suppression of triglyceride (TG) accumulation in 3T3-L1 cells. Among the tested extracts, Diospyros kaki L. showed the highest contents of total sugar and the content of total phenolic compounds was detected 17 species while there was not detected in Ixeris dentate root and Allium fistulosum C. etc. We were screened 26 extracts of fruits and vegetables for pancreatic lipase inhibitory activity compared with orlistat. The strongest lipase inhibitory activities were shown by extract of Allium sativum L. stem, Allium sativum L. bulb, Apteryx australis, Diospyros kaki L. Malus Pumila, Perilla frutescens and Prunus mume regardless of concentrations treated. Eight extracts including Brassica juncea var. integrilolia had no effect on lipase inhibition. During the differentiation of 3T3-L1 preadipocyte to mature adipocyte, the cells were treated with carrier or 7 extracts(1, 5 and 10 ㎍/ml), which was shown to highest lipase inhibitory effects. We were quantified lipid contents secreted mature adipocytes and stained with Oil Red O. All cells treated with the Apteryx australis and Prunus mume significantly decreased TG contents than the control. These findings suggested that the screened fruit and vegetable could be a promising source as the effective and safe lipase inhibitors for isolating bioactive ingredients and developing functional foods.
분만 후 심한 저혈당이 동반된 림프구성 뇌하수체염 1예의 경과 관찰
손장명,고승현,안유배,주강,이정록,양성은,송기호,손호영,전정수 대한내분비학회 2003 Endocrinology and metabolism Vol.18 No.3
저자들은 출산 후 발생한 심한 저혈당을 주소로 내원한 31세 여자 환자에서 뇌 자기공명영상검사에서 뇌하수체종괴가 관찰되고 복합 뇌하수체 기능검사 결과전반적인 뇌하수체 기능저하증의 소견을 보여 림프구성 뇌하수체염을 진단하고, 호르몬 보충요법만으로 경과를 관찰하여 호전된 예를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. Lymphocytic hypophysitis, an inflammatory disease of the pituitary gland that is often associated with pregnancy, is caused by autoimmune destruction of the pituitary gland evidenced by diffuse inflammatory cell infiltration of the pituitary gland and some kinds of detectable autoantibodies. We report a case of lymphocytic hypophysitis in a 31-year-old woman presenting with severe hypoglycemia and hyponatremia after delivery. Hormonal study revealed panhypopituitarism and magnetic resonance imaging with enhancement showed the bulging contour of the right side pituitary gland with an ill-defined mass-like lesion and nodular thickening of the stalk The patient's symptoms and biochemical data improved greatly with replacement of L-thyroxine and glucocorticoid. Partial recovery of panhypopituitarism was also seen. The follow-up tests revealed dramatic resolution of the pituitary lesion (J Kor SOC Endocrinol 1 8 : 3 25 -33 1, 2003).
Metabolic Engineering for Resveratrol Derivative Biosynthesis in Escherichia coli
Jeong, Yu Jeong,Woo, Su Gyeong,An, Chul Han,Jeong, Hyung Jae,Hong, Young-Soo,Kim, Young-Min,Ryu, Young Bae,Rho, Mun-Chual,Lee, Woo Song,Kim, Cha Young Korean Society for Molecular and Cellular Biology 2015 Molecules and cells Vol.38 No.4
We previously reported that the SbROMT3syn recombinant protein catalyzes the production of the methylated resveratrol derivatives pinostilbene and pterostilbene by methylating substrate resveratrol in recombinant E. coli. To further study the production of stilbene compounds in E. coli by the expression of enzymes involved in stilbene biosynthesis, we isolated three stilbene synthase (STS) genes from rhubarb, peanut, and grape as well as two resveratrol O-methyltransferase (ROMT) genes from grape and sorghum. The ability of RpSTS to produce resveratrol in recombinant E. coli was compared with other AhSTS and VrSTS genes. Out of three STS, only AhSTS was able to produce resveratrol from p-coumaric acid. Thus, to improve the solubility of RpSTS, VrROMT, and SbROMT3 in E. coli, we synthesized the RpSTS, VrROMT and SbROMT3 genes following codon-optimization and expressed one or both genes together with the cinnamate/4-coumarate:coenzyme A ligase (CCL) gene from Streptomyces coelicolor. Our HPLC and LC-MS analyses showed that recombinant E. coli expressing both ScCCL and RpSTSsyn led to the production of resveratrol when p-coumaric acid was used as the precursor. In addition, incorporation of SbROMT3syn in recombinant E. coli cells produced resveratrol and its mono-methylated derivative, pinostilbene, as the major products from p-coumaric acid. However, very small amounts of pterostilbene were only detectable in the recombinant E. coli cells expressing the ScCCL, RpSTSsyn and SbROMT3syn genes. These results suggest that RpSTSsyn exhibits an enhanced enzyme activity to produce resveratrol and SbROMT3syn catalyzes the methylation of resveratrol to produce pinostilbene in E. coli cells.
Effect of addition of methanol on rheological properties of silk formic acid solution
( Yu Jeong Bae ),( In Chul Um ) 한국잠사학회 2020 International Journal of Industrial Entomology Vol.40 No.1
Recently, many studies have been undertaken on the wet spinning and electrospinning of silk because wet-spun fibers and electrospun webs of silk can be applied in the biomedical and cosmetic fields owing to the good biocompatibility of silk. The rheological properties of silk solution are important because they strongly affect the spinning performance of the silk solution and the structures of resultant fibrous materials. Therefore, as a preliminary study on the effect of solvent composition on the rheological properties of silk fibroin (SF) solution and structure of the resultant film, in the reported work, methanol was added to the SF formic acid solution. A small amount of methanol (i.e. 2%) added to the SF formic acid solution significantly altered the rheological properties of the solution: its shear viscosity increased by 10 folds at low shear and decreased on increasing the shear rate, demonstrating shear thinning behavior of the SF solution. Dynamic tests for the SF solution indicated that the addition of 2% methanol altered the viscous state of the SF formic acid solution to elastic. However, the molecular conformation (i.e. β-sheet conformation) of the regenerated SF film cast from formic acid remained unchanged on the addition of 2% methanol. © 2020 The Korean Society of Sericultural Sciences Int. J. Indust. Entomol. 40(1), 28-32 (2020)