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Ghorbani MJ, Dehghani SM. Update on a previously reported missense mutation: The c.1160 C>A mutation in the UGT1A1 gene result in Crigler-Najjar syndrome type 1. Mol Genet Genomic Med 2021; 9:e1805. [PMID: 34545702 PMCID: PMC8606201 DOI: 10.1002/mgg3.1805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
| | - Seyed Mohsen Dehghani
- Gastroenterohepatology Research Center, Nemazee Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
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Ghorbani MJ, Dehghani SM. A novel deletion mutation (c.749 del C) in the UGT1A1 gene as a cause of Crigler-Najjar syndrome type 1: A case report. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Abuduxikuer K, Fang LJ, Li LT, Gong JY, Wang JS. UGT1A1 genotypes and unconjugated hyperbilirubinemia phenotypes in post-neonatal Chinese children: A retrospective analysis and quantitative correlation. Medicine (Baltimore) 2018; 97:e13576. [PMID: 30544479 PMCID: PMC6310575 DOI: 10.1097/md.0000000000013576] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
To retrospectively analyze and quantitatively correlate UGT1A1 (bilirubin UDP- glucuronosyltransferase gene) genotypes and unconjugated hyperbilirubinemia (UCH) phenotypes among Chinese children.We retrospectively reviewed UCH patients, quantitatively analyzed genotype-phenotype correlation by comparing with healthy controls. Pfam database, SWISS-model, and Pymol were used for UGT1A1 protein domain analysis and protein modeling for assessing the effect of novel missense variants on protein structure.Seventy four cases, including 21 prolonged unconjugated hyperbilirubinemia (PUCH), 30 Gilbert syndrome (GS), 22 Crigler-Najjar syndrome type II (CNS-II), and 1 Crigler-Najjar syndrome type I (CNS-I) phenotypes were analyzed. Total of 21 variants, including 7 novel variants (c.764T>A/p.L255Q, c.1112C>T/p.T371I, c.1028C>A/p.S343X, c.1047delG/p.I350YfsX16, c.996 + 5G>C/g.6923G>C, c.287G>A/p.G96E, and c.1142G>A/p.S381N) were found. In the multiple regression model, heterozygous A(TA)7TAA, G71R/P364L, and Y486D/other mutations were significantly associated with increased risk of GS, PUCH, and CNS-II, respectively. Total allele number is significantly associated with GS and CNS-II, with each increase in total allele number, the odds ratio (OR) of having GS and CNS-II increased by 1.46 and 4.47 fold, respectively. Having only functional polymorphisms in UGT1A1 gene is associated with increased risk of PUCH, and GS with OR values of 5.67 (95% CI: 1.52-21.13), and 3.88 (95% CI: 1.02-14.78), respectively. Having only mutation is associated with significantly increased risk of having GS phenotype (OR: 34.00, 95% CI: 4.65-248.37), but not CNS-II. Polymorphism plus mutation had the strongest association with CNS-II with OR value of 64.80 (95% CI: 7.68-546.41), followed by GS (OR: 4.53, 95% CI: 1.08-19.08).We detected 7 novel variants, and quantitatively calculated risks of having specific phenotypes using genetic data. Among Chinese children, G71R and P364L is independently associated with PUCH, A(TA)7TAA is associated with GS, and Y486D or other disease-causing mutations were associated with CNS-II. Multiple alleles were associated with more severe phenotypes. Combined variant of G71R+Y486D is a common occurrence among Chinese children with UCH.
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Affiliation(s)
| | - Ling-Juan Fang
- Department of Hepatology, Children's Hospital of Fudan University
| | - Li-Ting Li
- Department of Hepatology, Children's Hospital of Fudan University
| | - Jing-Yu Gong
- Department of Pediatrics, Jinshan Hospital of Fudan University, Shanghai, China
| | - Jian-She Wang
- Department of Pediatrics, Jinshan Hospital of Fudan University, Shanghai, China
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Yang XW, Chen JY, Yan WL, Du J, Wen ZJ, Yan XZ, Yang PH, Yang J, Zhang BH. Case-control study of the efficacy of retrogastric Roux-en-Y choledochojejunostomy. Oncotarget 2017; 8:81226-81234. [PMID: 29113382 PMCID: PMC5655277 DOI: 10.18632/oncotarget.16006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 02/28/2017] [Indexed: 01/04/2023] Open
Abstract
The traditional, retrocolic/antegastric Roux-en-Y choledochojejunostomy is technically complicated, and the incidence of postoperative complications remains high. Here we report the outcome of 59 consecutively treated patients (study group, SG) that underwent a new choledochojejunostomy method in which the jejunal loop is passed behind the antrum pyloricum (retrogastric route). A retrospective comparison was made between this group of patients and 187 patients (control group, CG) that underwent conventional Roux-en-Y choledochojejunostomy (antegastric route). Baseline clinicopathological characteristics were similar in both groups, except for the BMI, which was significantly higher in the SG. The time spent on constructing the anastomosis, as well as overall postoperative complications, did not differ between groups. Compared with the CG, the incidence of postoperative delayed gastric emptying was decreased in the SG, and the time elapsed before the patients' first postoperative liquid food consumption was shorter. We ascribe these beneficial effects to the superiority of the modified, retropyloric choledochojejunostomy approach, and propose that this surgical technique is particularly suitable for obese patients, especially those with a short ascending bowel loop.
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Affiliation(s)
- Xin-Wei Yang
- Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Jun-Yi Chen
- Department of General Surgery, the Fourth People's Hospital of Shanghai, Shanghai, China
| | - Wen-Liang Yan
- Department of Dermatology, Jinling Hospital, Nanjing, China
| | - Jing Du
- Second Military Medical University, Shanghai, China
| | - Zhi-Jian Wen
- Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Xing-Zhou Yan
- Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Ping-Hua Yang
- Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Jue Yang
- Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Bao-Hua Zhang
- Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
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Pierrakos C, Velissaris D, Felleiter P, Antonelli M, Vanhems P, Sakr Y, Vincent JL. Increased mortality in critically ill patients with mild or moderate hyperbilirubinemia. J Crit Care 2017; 40:31-35. [PMID: 28314169 DOI: 10.1016/j.jcrc.2017.01.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 12/11/2016] [Accepted: 01/22/2017] [Indexed: 12/18/2022]
Abstract
PURPOSE Increased bilirubin concentrations may be related to outcome, but this has not been well studied. We evaluated the relationship between total serum bilirubin levels and outcome in critically ill patients. MATERIALS AND METHODS Data were analyzed from adult critically ill patients included in a 1-day international prevalence study after excluding those with an obvious underlying cause of hyperbilirubinemia. RESULTS Serum bilirubin concentrations were >1 mg/dL in 2803 (31%) of 8973 patients, and these patients had higher mortality rates than patients with lower bilirubin concentrations (30% vs 21%, P<.01). For serum bilirubin values of 1.1-6 mg/dL, there was a linear increase in crude mortality (R2=0.96), with the highest hospital mortality (42%) in patients with bilirubin concentrations between 3.7 and 6.0 mg/dL. There was no further increase in the mortality rates for patients with bilirubin concentrations >6 mg/dL. A serum bilirubin concentration >1 mg/dL was an independent risk factor for mortality in multilevel analysis. CONCLUSIONS Hyperbilirubinemia without a recognized cause was common and independently associated with increased mortality. There was a linear correlation of mortality with bilirubin concentration for values between 1 and 6 mg/dL but not for higher values.
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Affiliation(s)
| | | | - Peter Felleiter
- Intensive Care Medicine, Swiss Paraplegic Centre, Nottwil, Switzerland
| | - Massimo Antonelli
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of Rome, A. Gemelli University Hospital, Rome, Italy
| | - Philippe Vanhems
- Hospices Civils de Lyon, Service d'Hygiène, Epidémiologie et Prévention, Unité Epidémiologie et Biomarqueurs de l'Infection, Lyon, France
| | - Yasser Sakr
- Department of Anesthesiology and Intensive Care, Uniklinikum Jena, Jena, Germany
| | - Jean-Louis Vincent
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium.
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Elizabeth de Sousa Rodrigues M, Bekhbat M, Houser MC, Chang J, Walker DI, Jones DP, Oller do Nascimento CM, Barnum CJ, Tansey MG. Chronic psychological stress and high-fat high-fructose diet disrupt metabolic and inflammatory gene networks in the brain, liver, and gut and promote behavioral deficits in mice. Brain Behav Immun 2017; 59:158-172. [PMID: 27592562 PMCID: PMC5154856 DOI: 10.1016/j.bbi.2016.08.021] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 08/19/2016] [Accepted: 08/31/2016] [Indexed: 11/25/2022] Open
Abstract
The mechanisms underlying the association between chronic psychological stress, development of metabolic syndrome (MetS), and behavioral impairment in obesity are poorly understood. The aim of the present study was to assess the effects of mild chronic psychological stress on metabolic, inflammatory, and behavioral profiles in a mouse model of diet-induced obesity. We hypothesized that (1) high-fat high-fructose diet (HFHF) and psychological stress would synergize to mediate the impact of inflammation on the central nervous system in the presence of behavioral dysfunction, and that (2) HFHF and stress interactions would impact insulin and lipid metabolism. C57Bl/6 male mice underwent a combination of HFHF and two weeks of chronic psychological stress. MetS-related conditions were assessed using untargeted plasma metabolomics, and structural and immune changes in the gut and liver were evaluated. Inflammation was measured in plasma, liver, gut, and brain. Our results show a complex interplay of diet and stress on gut alterations, energetic homeostasis, lipid metabolism, and plasma insulin levels. Psychological stress and HFHF diet promoted changes in intestinal tight junctions proteins and increases in insulin resistance and plasma cholesterol, and impacted the RNA expression of inflammatory factors in the hippocampus. Stress promoted an adaptive anti-inflammatory profile in the hippocampus that was abolished by diet treatment. HFHF increased hippocampal and hepatic Lcn2 mRNA expression as well as LCN2 plasma levels. Behavioral changes were associated with HFHF and stress. Collectively, these results suggest that diet and stress as pervasive factors exacerbate MetS-related conditions through an inflammatory mechanism that ultimately can impact behavior. This rodent model may prove useful for identification of possible biomarkers and therapeutic targets to treat metabolic syndrome and mood disorders.
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Affiliation(s)
- Maria Elizabeth de Sousa Rodrigues
- Department of Physiology, School of Medicine at Emory University, United States,Department of Physiology of Nutrition, Federal University of Sao Paulo, SP, Brazil
| | - Mandakh Bekhbat
- Department of Physiology, School of Medicine at Emory University, United States.
| | - Madelyn C. Houser
- Department of Physiology, School of Medicine at Emory University, United States
| | - Jianjun Chang
- Department of Physiology, School of Medicine at Emory University, United States.
| | - Douglas I. Walker
- Division of Pulmonary, Allergy and Critical Care Medicine, School of Medicine at Emory University, United States
| | - Dean P. Jones
- Division of Pulmonary, Allergy and Critical Care Medicine, School of Medicine at Emory University, United States
| | | | | | - Malú G. Tansey
- Department of Physiology, School of Medicine at Emory University, United States,Corresponding author at: Emory University School of Medicine, 605L Whitehead Biomedical Res. Bldg., 615 Michael Street, Atlanta, GA 30322-3110, United States
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Assarsson E, Lundberg M, Holmquist G, Björkesten J, Bucht Thorsen S, Ekman D, Eriksson A, Rennel Dickens E, Ohlsson S, Edfeldt G, Andersson AC, Lindstedt P, Stenvang J, Gullberg M, Fredriksson S. Homogenous 96-plex PEA immunoassay exhibiting high sensitivity, specificity, and excellent scalability. PLoS One 2014; 9:e95192. [PMID: 24755770 PMCID: PMC3995906 DOI: 10.1371/journal.pone.0095192] [Citation(s) in RCA: 1098] [Impact Index Per Article: 109.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 03/24/2014] [Indexed: 12/23/2022] Open
Abstract
Medical research is developing an ever greater need for comprehensive high-quality data generation to realize the promises of personalized health care based on molecular biomarkers. The nucleic acid proximity-based methods proximity ligation and proximity extension assays have, with their dual reporters, shown potential to relieve the shortcomings of antibodies and their inherent cross-reactivity in multiplex protein quantification applications. The aim of the present study was to develop a robust 96-plex immunoassay based on the proximity extension assay (PEA) for improved high throughput detection of protein biomarkers. This was enabled by: (1) a modified design leading to a reduced number of pipetting steps compared to the existing PEA protocol, as well as improved intra-assay precision; (2) a new enzymatic system that uses a hyper-thermostabile enzyme, Pwo, for uniting the two probes allowing for room temperature addition of all reagents and improved the sensitivity; (3) introduction of an inter-plate control and a new normalization procedure leading to improved inter-assay precision (reproducibility). The multiplex proximity extension assay was found to perform well in complex samples, such as serum and plasma, and also in xenografted mice and resuspended dried blood spots, consuming only 1 µL sample per test. All-in-all, the development of the current multiplex technique is a step toward robust high throughput protein marker discovery and research.
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Affiliation(s)
| | | | | | | | - Stine Bucht Thorsen
- Section for Molecular Disease Biology and Sino-Danish Breast Cancer Research Centre, Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | | | | | | | | | | | | | - Jan Stenvang
- Section for Molecular Disease Biology and Sino-Danish Breast Cancer Research Centre, Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Hornby RJ, Starkey Lewis P, Dear J, Goldring C, Park BK. MicroRNAs as potential circulating biomarkers of drug-induced liver injury: key current and future issues for translation to humans. Expert Rev Clin Pharmacol 2014; 7:349-62. [PMID: 24694030 DOI: 10.1586/17512433.2014.904201] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Drug-induced liver injury (DILI) is a common form of adverse drug reaction seen within the clinic. Sensitive, specific and non-invasive biomarkers of liver toxicity are required to help diagnose hepatotoxicity and also to identify safety liabilities during drug development. Limitations exist in the current gold standard DILI biomarkers: alanine aminotransferase is not liver-specific and therefore gives rise to false-positive signals. Interest has grown in the potential of microRNAs (miRNAs) as biomarkers of DILI. Some miRNAs display remarkable organ specificity, can be measured sensitively and are stable in a wide range of biofluids. However, little is currently known about the mechanisms through which miRNAs are released from cells. Furthermore, a clinically suitable method to measure miRNAs has not yet been developed. This review aims to highlight the current research surrounding these markers and areas in which further work is required to establish these markers within clinical and pre-clinical settings.
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Affiliation(s)
- Robert James Hornby
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, Sherrington Buildings, University of Liverpool, L69 3GE, UK
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Jang BK. Elevated serum bilirubin levels are inversely associated with nonalcoholic fatty liver disease. Clin Mol Hepatol 2012; 18:357-9. [PMID: 23323250 PMCID: PMC3540371 DOI: 10.3350/cmh.2012.18.4.357] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Accepted: 11/23/2012] [Indexed: 12/25/2022] Open
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Przybylak KR, Cronin MTD. In silico models for drug-induced liver injury--current status. Expert Opin Drug Metab Toxicol 2012; 8:201-17. [PMID: 22248266 DOI: 10.1517/17425255.2012.648613] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Drug-induced liver injury (DILI) is one of the most important reasons for drug attrition at both pre-approval and post-approval stages. Therefore, it is crucial to develop methods that will detect potential hepatotoxicity among drug candidates as early and quickly as possible. However, the complexity of hepatotoxicity endpoint makes it very difficult to predict. In addition, there is still a lack of sensitive and specific biomarkers for DILI that consequently leads to a scarcity of reliable hepatotoxic data, which are the key to any modelling approach. AREAS COVERED This review explores the current status of existing in silico models predicting hepatotoxicity. Over the past decade, attempts have been made to compile hepatotoxicity data and develop in silico models, which can be used as a first-line screening of drug candidates for further testing. EXPERT OPINION Most of the predictive methods discussed in this review are based on the structural properties of chemicals and do not take into account genetic and environmental factors; therefore, their predictions are still uncertain. To improve the predictability of in silico models for DILI, it is essential to better understand its mechanisms as well as to develop sensitive toxicogenomics biomarkers, which show relatively good differentiation between hepatotoxins and non-hepatotoxins.
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Affiliation(s)
- Katarzyna R Przybylak
- Liverpool John Moores University, School of Pharmacy and Chemistry, Byrom Street, Liverpool, L3 3AF, England
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Yu GP, Jiang QL, Fan ZP, Zhao J, Wei Q, Sun J, Meng FY, Liu QF. Allogeneic hematopoietic stem cell transplantation for acute leukemia with Gilbert's syndrome. J Hematol Oncol 2011; 4:9. [PMID: 21388537 PMCID: PMC3069947 DOI: 10.1186/1756-8722-4-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Accepted: 03/09/2011] [Indexed: 11/12/2022] Open
Abstract
Acute leukemia with coexisting Gilbert's syndrome treated by allogeneic hematopoietic stem cell transplantation (allo-HSCT) is rarely reported. Here we described a case whose transaminase levels were almost normal, although transient hyperbilirubinemia repeatedly happened during chemotherapy.
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Abstract
Of the estimated 10,000 documented human drugs, more than 1000 have been associated with drug-induced liver injury (DILI), although causality has not always been established clearly. Numerous biomarkers for DILI have been explored, but less than ten are adopted or qualified as valid by the US FDA. The biomarkers for DILI are individual or a panel of proteins, nucleic acids or metabolites from various sources, such as the liver, blood and urine. While most DILI biomarkers are drug independent, some possibly 'drug-specific' DILIs have been explored, but specificity and sensitivity of both types need to be improved for the diagnosis of DILI during drug development and in clinical practice. Novel approaches for DILI biomarkers have been actively investigated recently, but produced mainly animal-based biomarkers, which are possibly useful for drug development, but are not suitable or have not been validated for clinical applications. This review summarizes the current practice and future perspectives for DILI biomarkers.
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Affiliation(s)
- Qiang Shi
- Center for Toxicoinformatics, Division of Systems Toxicology, National Center for Toxicological Research, US Food and Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
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