نتایج جستجو برای: ugt1a1 enzyme

تعداد نتایج: 241868  

Journal: :Drug metabolism and pharmacokinetics 2005
Hidefumi Kaji Toshiyuki Kume

We characterized the hepatic and intestinal UDP-glucuronosyltransferase (UGT) isoform(s) responsible for the glucuronidation of 2-(4-chlorophenyl)-5-(2-furyl)-4-oxazoleacetic acid (TA-1801A) in humans through several in vitro mechanistic studies. Assessment of a panel of recombinant UGT isoforms revealed the TA-1801A glucuronosyltransferase activity of UGT1A1, UGT1A3, UGT1A7, UGT1A9, and UGT2B7...

Journal: :Drug metabolism and disposition: the biological fate of chemicals 2010
Junko Sugatani Makoto Osabe Masatoshi Kurosawa Naomi Kitamura Akira Ikari Masao Miwa

Hepatocyte growth factor (HGF), an antimitogenic factor for HepG2 cells, increased mRNA and protein levels of UGT1A1 and CYP2B6, as well as the endogenous cyclin-dependent kinase (CDK) inhibitors p16, p21, and p27 in HepG2 cells but not in HuH6, Caco2, or MCF7 cells. Treatment with 1,4-diamino-2,3-dicyano-1,4-bis(methylthio)butadiene (U0126) (an extracellular signal-regulated kinase inhibitor) ...

Journal: :The Journal of pharmacology and experimental therapeutics 2017
Ayumi Kurita Yuu Miyauchi Shin'ichi Ikushiro Peter I Mackenzie Hideyuki Yamada Yuji Ishii

UDP-Glucuronosyltransferases (UGTs) are classified into three subfamilies in mice: Ugt1a, 2b, and 2a. In the Ugt1a subfamily, Ugt1a1 and 1a6 appear to correspond to human UGT1A1 and 1A6 The mouse is an important animal for its use in investigations, but the substrate specificities of Ugt isoforms belonging to the 2b subfamily in mice remain largely unknown. To address this issue, we characteriz...

2015
Yuankai Shi Yi Hu Xingsheng Hu Xue Li Lin Lin Xiaohong Han

BACKGROUND This study evaluated the efficacy and safety of irinotecan/cisplatin (IP) and etoposide/cisplatin (EP) in extensive-stage small cell lung cancer (ES-SCLC) and the distribution of uridine diphosphate glucuronosyltransferase (UGT1A1). The relationship between UGT1A1 genotypes and patient outcomes was also assessed. METHOD Patients with untreated ES-SCLC were randomly assigned to rece...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده علوم 1392

سندرم کریگلر- نجار نوع 1، یک بیماری نادر اتوزومی مغلوب با شیوع 1 در یک میلیون نوزاد می باشد و با افزایش بیلی روبین غیر کنژوگه و غیر همولیتیک شناخته می شود. این سندرم طی دوره ی نوزادی با زردی زودرس و شدید آشکار می گردد. بیماری در اثر جهش در ژنugt1a1 که باعث فقدان تقریباً کامل فعالیت آنزیم ugt1a1 و در نتیجه عدم ترکیب بیلی روبین با گلوکورونیک اسید می گردد، ایجاد می شود. لوکوس ugt1a1 بر روی کروموزوم...

Journal: :Genetics and molecular research : GMR 2014
T-Y Hsieh T-Y Shiu N-F Chu T-Y Chao H-C Chu W-K Chang Y-C Chao H-H Huang

Gilbert's syndrome is suspected in patients with unconjugated hyperbilirubinemia caused by decreased activity of the UDP-glucuronosyltransferase 1A1 (UGT1A1) gene in the absence of abnormal liver function and hemolysis. The major genetic variants underlying Gilbert's syndrome are TATA-box repeats of the promoter region and exon 1 G211A of the coding region, particularly in Asians. The efficacy ...

Journal: :Asian Pacific journal of cancer prevention : APJCP 2014
Yan-Yan Lu Xin-En Huang Xue-Yan Wu Jie Cao Jin Liu Lin Wang Jin Xiang

BACKGROUND Severe toxicity is commonly observed in cancer patients receiving irinotecan (CPT-11). UDP glucuronosyltransferase1A1 (UGT1A1) catalyzes the glucuronidation of the active metabolite SN-38 but the relationship between UGT1A1 and severe toxicity remains unclear. Our study aimed to assess this point to guide clinical use of CPT-11. MATERIALS AND METHODS 89 cancer patients with advance...

2014
Luís Belo Henrique Nascimento Michaela Kohlova Elsa Bronze-da-Rocha João Fernandes Elísio Costa Cristina Catarino Luísa Aires Helena Ferreira Mansilha Petronila Rocha-Pereira Alexandre Quintanilha Carla Rêgo Alice Santos-Silva

OBJECTIVES Bilirubin has potential antioxidant and anti-inflammatory properties. The UGT1A1*28 polymorphism (TA repeats in the promoter region) is a major determinant of bilirubin levels and recent evidence suggests that raised adiposity may also be a contributing factor. We aimed to study the interaction between UGT1A1 polymorphism, hematological and anthropometric variables with total bilirub...

Objective(s): Mutations in the UGT1A1 gene are responsible for hyperbilirubinemia syndromes including Crigler-Najjar type 1 and 2 and Gilbert syndrome. In view of the genetic heterogeneity and involvement of large numbers of the disease causing mutations, the application of polymorphic markers in the UGTA1 gene could be useful in molecular diagnosis of the disease. Materials and Methods: In the...

Journal: :Molecular pharmacology 2005
Junko Sugatani Shinichi Nishitani Kasumi Yamakawa Kouichi Yoshinari Tatsuya Sueyoshi Masahiko Negishi Masao Miwa

UDP-glucuronosyltransferase (UGT) 1A1 glucuronidates endogenous metabolites, such as bilirubin, and exogenous substances, and plays a critical role in their detoxification and excretion. In a previous article, we described the phenobarbital response activity to a 290-base pair (bp) distal enhancer sequence (-3499/-3210) of the human UGT1A1 gene that is activated by the constitutive androstane r...

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