간세포암에 대한 화학 색전 및 주입 요법 후에 발생한 발열과 감염성 합병증에 관한 전향적 연구

김양수,이상오,이미숙,정두련,김은옥,정영화,우준희,이영상,서동진,성규보,류지소,고기영 대한감염학회 1998 감염 Vol.30 No.3

목적 : 간동맥 화학 색전 및 주입 요법을 시행 받은 환자에서 시술 후 나타나는 발열 및 감염성 합병증의 빈도와 특성을 관찰하고, 이들 중 감염성 합병증이 발생한 환자들을 미래 예측할 수 있는 임상적 지표들이 있는 지 알고자 하였다. 방법 : 1997년 6월부터 8월까지 간세포암으로 간동맥 화학 색전 및 주입 요법을 시행받은 환자들을 대상으로 전향적으로 조사하였다. 화학 색전 및 주입 요법 시행 후 발열이 발생하였으나 감염 및 간 회 색전증의 증거 없이 자연히 소실된 경우에 한해 색전술 후 증후군이라고 정의하였다. 결과 : 284명에서 303예의 시술(화학 색전 요법 200예, 주입 요법 103예)이 시행되었다. 이중 108예(35.6%)에서 시술 후 발열이 있었다. 발열의 원인으로 감염성 합병증이 7예 (2.3%), 허혈성 담낭염이 5예(1.7%)였고 1예는 분류가 힘들어 나머지 95예(31.4%)를 색전술 후 증후군으로 분류하였다. 감염성 합병증은 배양 음성 중성구성 복수(culture-negative neutrocytic ascites)가 3예, 원발성 세균성 복막염이 2예(이중 1예는 패혈증 동반), 패혈송 쇽이 1예, 요로 감염증이 1예이었다. 색전술 후 증후군은 발열이 없었던 군에 비해 복수가 있거나(odds ratio [OR], 2.74; 95% contidence interval [CI], 1.30∼5.75) 종양이 클수록 (OR, 1/15; 95% CI, 1.06∼1.24), 도한 좌우 감동맥을 모두 막은 경우 (OR, 1.81; 95% CI, 1.00∼3.28) 빈번하게 발생하였다. 감염성 합병증일 때에는 색전술 후 발열이 있으면서 systemic inflammatory response syndrome(SIRS)의 기준을 만족하거나 (p<0.05) 시술 후 72시간 이후에 복부 동통이 발생하는 경우가 많았다.(p<0.01). 그러나 발열 시 감염을 미리 구별할 수 있는 검사실 소견은 없었다. 결론 : 간세포암에 대한 화학 색전 및 주입 요법 후 색전술 후 증후군은 31.4%, 감염성 합병증은 2.3%에서 발생하였다. 색전술 후 발열이 있으면서 SIRS의 기준을 만족하거나 시술 후 72시간 이 후에 복부 동통이 발생할 때에는 감염성 합병증을 반드시 고려해야 하겠다. Background : Transarterial chemoembolization(TACE) and chemoinfusion (TACI) are the methods used increasingly in hepatocelluar carcinoma patients. In this study, the incidence of fever and infectious complications after TACE or TACI in pateints with hepatocellular cacinoma was investigated and clinical parameters predicting such complications were evaluated. Methods : Prospective surveys were done in hepatocelluar carcinoma patients who had undergone TACE or TACI from June August, 1997. Three hundred three treatment cases with TACE (200) or TACI (103) in 284 patients were analyzed. The postembolization syndrome was defined as fever following TACE or TACI that spontaneously subsided without the evidence of infections or extrahepatic emboilizations. Results : One hundread eight (35.6%) out of 303 cases showed fever after the treatment. Regarding the etiology of the fever, after the treatment. Regarding the etiology of the fever, infections occurred in 7 cases (2.3%), and ischemic cholecystitis existed in 5 cases (1.7%). In one case the cause was not clear and 95 cases (31.4%) were classified as the postembolization syndrome. Out of the infections, three had culture-negative neutrocytic scites, two spontaneous bacterial peritonitis (one was accompanied with sepsis), one septic shock, and one urinary tract infection. The postembolization syndrome was more frequently found in the cases with ascites (odd ratio [OR], 2.74; 95% confidence interval[CI], 1.30∼5.75), with larger tumor (OR, 1.15; 95% CI, 1.06∼1.24) and with embolization both hepatic arteries (OR, 1.81; 95% CI, 1.00∼3.28). In the cases with infections, many satisfied the criteria for systemic inflammatory response syndrome (SIRS, P<0.05) or had abdominal pain 72 hours later (P<0.01) after the treatment. However, no other laboratory data predicted infection among the cases with fever. Conclusion : After TACE or TACI in hepatocellular carcinoma patients, 31.4% of cases showed the postembolization syndrome and 2.3% of cases showed infection. Infection should be considered as a cause of fever in patients satisfying the criteria for SIRS or with abdominal pain 72 hours later after the treatment.

이면성 및 도플러 심초음파도를 이용하여 진단한 선천성 거대 좌회선지-좌심실 관동맥루

진승원,박준철,이영중,유병현,박현옥,김용주,윤호중,김재형,홍순조,최규보,권종범,원용순,박건 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.4

산성강하물의 침착량과 동태 해명에 관한 연구 -춘천과 서울 강우의 화학조성 비교 : Comparison of Chemical Composition of Rain Water between Chunchon and Seoul

김만구,강미희,임양석,박기준,황훈,이보경,홍승희,이동수 江原大學校 附設 環境硏究所 1999 環境硏究 Vol.16 No.-

The rain water samples were collected at Chunchon and Seoul by using wet only automatic sampler from January 1996 through December 1997. The daily base rain water samples collected over than 95% rainy events during the whole period. The samples were measured both pH and conductivity, and were analysed major ionic components, SO₄^(2-), NO₃^(-), Cl^(-), NH₄^(+), Ca^(2+), Na^(+) and K ^(+), by ion chromatography. In 1996, about 77% sampled rain water showed below pH 5.6 and the 60% of rain water was lower than pH 5.0. The volume weighted average pH was 4.7 at all sites. In 1997, the volume weighted average pH was 4.6 and 4.9 at Seoul and Chunchon, respectively. Among the rain water samples, 87% and 55% of samples showed below than pH 5.6 and 5.0, respectively. The pH value of Chunchon was significantly (p<0.05) lower than Seoul at the rain samples for less than 20 ㎜ rainfall. However conductivity of the rain samples were 20.9 μS/㎝ for 1996 and 27.7 μS/㎝ for 1997 at Seoul, and 19.1 μS/㎝ for 1996 and 14.1 μS/㎝ for 1997 at Chunchon. H₂SO₄AND HNO₃CONTRIBUTED 65.9% and 29.6% of free acidity at Seoul, respectively. The ratio of [NO₃^(-)]/[nss-SO₄^(2-)] were 0.43 at Seoul and 0.51 at Chunchon for rain samples for less than 20 ㎜ rainfall. The annual wet deposition of Cl^(-), NO₃^(-), SO₄^(2-), H^(+), Na^(+), NH₄^(+), K ^(+), Mg^(2+) and Ca^(2+), respectively, 568.8 ㎏/㎢, 1489.3 ㎏/㎢, 3184.8 ㎏/㎢, 20.9 ㎏/㎢, 249.4 ㎏/㎢, 1091.2 ㎏/㎢, 189.8 ㎏/㎢, 90.2 ㎏/㎢, and 702.4 ㎏/㎢ at Seoul for 1996; 656.4 ㎏/㎢, 2029.7 ㎏/㎢, 3280.7 ㎏/㎢,27.2 ㎏/㎢, 229.4 ㎏/㎢, 1063.9 ㎏/㎢, 106.9 ㎏/㎢, 7802 ㎏/㎢, and 645.3 ㎏/㎢, at Seoul for 1997; 116.9 ㎏/㎢, 983.3 ㎏/㎢, 1797.0 ㎏/㎢, 21.4 ㎏/㎢, 83.2 ㎏/㎢, 648.1 ㎏/㎢, 78.0 ㎏/㎢, 22.2 ㎏/㎢ and 368.8 ㎏/㎢ at Chunchon for 1996; 100.2 ㎏/㎢, 1077.6 ㎏/㎢, 1754.0 ㎏/㎢, 13.4 ㎏/㎢, 146.0 ㎏/㎢, 602.3 ㎏/㎢, 88.8 ㎏/㎢, 16.2 ㎏/㎢ and 206.8 ㎏/㎢ at Chunchon for 1997.

양측 부신 절제술의 수술 후 결과 분석

강보라,김지영,최준호,김지수,남석진,양정현1,김정한,Bo Ra Kang,Jiyoung Kim,Jun-Ho Choe,Jee Soo Kim,Seok Jin Nam,Jung-Hyun Yang1,Jung-Han Kim 대한갑상선-내분비외과학회 2013 The Koreran journal of Endocrine Surgery Vol.13 No.4

Purpose: Because the main drawback of bilateral adrenalectomy is permanent adrenal insufficiency and the subsequent risks of life-long steroid use, adrenal preserving partial adrenalectomy is being accepted as its alternative. The aim of this study is to investigate the indications for bilateral adrenalectomy and to assess the postoperative outcomes and steroid replacement according to operative methods. Methods: From May 1996 through July 2013, a total of 25 patients who underwent bilateral adrenalectomy in our institution were reviewed retrospectively. Surgical outcomes were compared between total and partial adrenalectomy, and postoperative steroid hormone replacement were examined according to the volume of remnant adrenal gland. Results: The median follow-up duration of 25 patients was 55.8 months. The most common indication for bilateral adrenalectomy was bilateral pheochromocytoma (n=16), which was associated with genetic mutation of RET or VHL gene in 11 cases. Cushing's syndrome (n=8) and hyperaldosteronism (n=1) were another indications of bilateral adrenalectomy. Total adrenalectomy was performed in 8 patients and adrenal preserving partial adrenalectomy in 17 patients. Among the 17 patients, only 5 patients needed adrenal hormone replacement and 2 patients had a recurrence at remnant adrenal tissue. Conclusion: Adrenal preserving partial adrenalectomy might be a better option for bilateral adrenal tumor than total adrenalectomy because it can reduce complications associated with adrenal insufficiency and recurrence of the disease is not common.

Improved photocatalytic performance of Pd-doped ZnO

Jun bo Zhong,Jian zhang Li,Xi yang He,Jun Zeng,Yan Lu,Wei Hu,Kun Lin 한국물리학회 2012 Current Applied Physics Vol.12 No.3

ZnO and Pd-doped ZnO photocatalysts with different molar ratio of Pd/Zn (1/100, 2/100, 3/100 and 4/100) were prepared by a solegel method. The photocatalysts prepared were characterized by BET surface area, X-ray diffraction (XRD), UV/vis diffuse reflectance (DRS) and surface photovoltage spectroscopy (SPS), respectively. The results show that doping Pd into ZnO decreases the BET surface area. The XRD spectra of the Pd-doped ZnO catalysts calcined at 773 K show only the characteristic peaks of wurtzite-type. Doping Pd into ZnO increases the absorbance of ZnO in visible region and enhances the photoinduced charge separation rate. The photocatalytic activity of Pd-doped ZnO photocatalysts for decolorization of methyl orange (MO) solution was evaluated, of all the photocatalysts prepared, the Pddoped ZnO with 3/100 possesses the best photocatalytic activity. The results of further experiments show that increased adsorption ability of light and high separation rate of photoinduced charge carriers all play an important role in promotion of photocatalytic activity of Pd-doped ZnO nanostructure.

Molecular and Biochemical Characterization of a Novel Xylanase from Massilia sp. RBM26 Isolated from the Feces of Rhinopithecus bieti

( Bo Xu ),( Li Ming Dai ),( Jun Jun Li ),( Meng Deng ),( Hua Biao Miao ),( Jun Pei Zhou ),( Yue Lin Mu ),( Qian Wu ),( Xiang Hua Tang ),( Yun Juan Yang ),( Jun Mei Ding ),( Nan Yu Han ),( Zun Xi Huang 한국미생물 · 생명공학회 2016 Journal of microbiology and biotechnology Vol.26 No.1

Xylanases sourced from different bacteria have significantly different enzymatic properties. Therefore, studying xylanases from different bacteria is important to their applications in different fields. A potential xylanase degradation gene in Massilia was recently discovered through genomic sequencing. However, its xylanase activity remains unexplored. This paper is the first to report a xylanase (XynRBM26) belonging to the glycosyl hydrolase family (GH10) from the genus Massilia. The gene encodes a 383-residue polypeptide (XynRBM26) with the highest identity of 62% with the endoxylanase from uncultured bacterium BLR13. The XynRBM26 expressed in Escherichia coli BL21 is a monomer with a molecular mass of 45.0 kDa. According to enzymatic characteristic analysis, pH 5.5 is the most appropriate for XynRBM26, which could maintain more than 90% activity between pH 5.0 and 8.0. Moreover, XynRBM26 is stable at 37°C and could maintain at least 96% activity after being placed at 37°C for 1 h. This paper is the first to report that GH10 xylanase in an animal gastrointestinal tract (GIT) has salt tolerance, which could maintain 86% activity in 5 M NaCl. Under the optimum conditions, Km, Vmax, and kcat of XynRBM26 to beechwood xylan are 9.49 mg/ml, 65.79 μmol/min/mg, and 47.34 /sec, respectively. Considering that XynRBM26 comes from an animal GIT, this xylanase has potential application in feedstuff. Moreover, XynRBM26 is applicable to high-salt food and seafood processing, as well as other high-salt environmental biotechnological fields, because of its high catalytic activity in high-concentration NaCl.

Methylated Alteration of SHP1 Complements Mutation of JAK2 Tyrosine Kinase in Patients with Myeloproliferative Neoplasm

Yang, Jun-Jun,Chen, Hui,Zheng, Xiao-Qun,Li, Hai-Ying,Wu, Jian-Bo,Tang, Li-Yuan,Gao, Shen-Meng Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.6

SHP1 negatively regulates the Janus kinase 2/signal transducer and activator of transcription (JAK2/STAT) signaling pathway, which is constitutively activated in myeloproliferative neoplasms (MPNs) and leukemia. Promoter hypermethylation resulting in epigenetic inactivation of SHP1 has been reported in myelomas, leukemias and other cancers. However, whether SHP1 hypermethylation occurs in MPNs, especially in Chinese patients, has remained unclear. Here, we report that aberrant hypermethylation of SHP1 was observed in several leukemic cell lines and bone marrow mononuclear cells from MPN patients. About 51 of 118 (43.2%) MPN patients including 23 of 50 (46%) polycythaemia vera patients, 20 of 50 (40%) essential thrombocythaemia and 8 of 18 (44.4%) idiopathic myelofibrosis showed hypermethylation by methylation-specific polymerase chain reaction. However, SHP1 methylation was not measured in 20 healthy volunteers. Hypermethylation of SHP1 was found in MPN patients with both positive (34/81, 42%) and negative (17/37, 45.9%) JAK2V617F mutation. The levels of SHP1 mRNA were significantly lower in hypermethylated samples than unmethylated samples, suggesting SHP1 may be epigenetically inactivated in MPN patients. Furthermore, treatment with 5-aza-2'-deoxycytidine (AZA) in K562 cells showing hypermethylation of SHP1 led to progressive demethylation of SHP1, with consequently increased reexpression of SHP1. Meanwhile, phosphorylated JAK2 and STAT3 were progressively reduced. Finally, AZA increased the expression of SHP1 in primary MPN cells with hypermethylation of SHP1. Therefore, our data suggest that epigenetic inactivation of SHP1 contributes to the constitutive activation of JAK2/STAT signaling. Restoration of SHP1 expression by AZA may contribute to clinical treatment for MPN patients.

Molecular Biology and Omics : Cloning and Characterization of a Novel α-Amylase from a Fecal Microbial Metagenome

( Bo Xu ),( Fu Ya Yang ),( Cai Yun Xiong ),( Jun Jun Li ),( Xiang Hua Tang ),( Jun Pei Zhou ),( Zhen Rong Xie ),( Jun Mei Ding ),( Yun Juan Yang ),( Zun Xi Huang ) 한국미생물 · 생명공학회 2014 Journal of microbiology and biotechnology Vol.24 No.4

To isolate novel and useful microbial enzymes from uncultured gastrointestinal microorganisms, a fecal microbial metagenomic library of the pygmy loris was constructed. The library was screened for amylolytic activity, and 8 of 50,000 recombinant clones showed amylolytic activity. Subcloning and sequence analysis of a positive clone led to the identification a novel gene (amyPL) coding for α-amylase. AmyPL was expressed in Escherichia coli BL21 (DE3) and the purified AmyPL was enzymatically characterized. This study is the first to report the molecular and biochemical characterization of a novel α-amylase from a gastrointestinal metagenomic library.

Biochemical Characterization of a GDSL-Motif Esterase from Bacillus sp. K91 with a New Putative Catalytic Mechanism

( Jun Mei Ding ),( Ting Ting Yu ),( Lian Ming Liang ),( Zhen Rong Xie ),( Yun Juan Yang ),( Jun Pei Zhou ),( Bo Xu ),( Jun Jun Li ),( Zun Xi Huang ) 한국미생물 · 생명공학회 2014 Journal of microbiology and biotechnology Vol.24 No.11

The esterase gene Est8 from the thermophilic bacterium Bacillus sp. K91 was cloned and expressed in Escherichia coli. The monomeric enzyme exhibited a theoretical molecular mass of 24.5 kDa and an optimal activity around 50°C at pH 9.0. A model of Est8 was constructed using a hypothetical YxiM precursor structure (2O14_A) from Bacillus subtilis as template. The structure showed an α/β-hydrolase fold and indicated the presence of a typical catalytic triad consisting of Ser-11, Asp-182, and His-185, which were investigated by site directed replacements coupled with kinetic characterization. Asp-182 and His-185 residues were more critical than the Ser-11 residue in the catalytic activity of Est8. A comparison of the amino acid sequence showed that Est8 could be grouped into the GDSL family and further classified as an SGNH hydrolase. Est8 is a new member of the SGNH hydrolase subfamily and may employ a different catalytic mechanism.

Transparent conducting hybrid thin films fabricated by layer-by-layer assembly of single-wall carbon nanotubes and conducting polymers

Sim, Jun-Bo,Yang, Hyun-Ho,Lee, Min-Jae,Yoon, Jun-Bo,Choi, Sung-Min Springer-Verlag 2012 APPLIED PHYSICS A MATERIALS SCIENCE AND PROCESSING Vol.108 No.2