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Long Q, Qi T, Zhang T, Wang J, Zeng J, Yan Y, Wang M, Huang W, Zhao H, Chen W, Zhang C. Commutability Assessment of Candidate External Quality Assessment Materials for Aminotransferase Activity Measurements Based on Different Approaches in China. Ann Lab Med 2020; 41:68-76. [PMID: 32829581 PMCID: PMC7443529 DOI: 10.3343/alm.2021.41.1.68] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 02/20/2020] [Accepted: 07/29/2020] [Indexed: 11/30/2022] Open
Abstract
Background Using commutable external quality assessment (EQA) materials is important for monitoring successful harmonization efforts. We assessed the commutability of four human serum pool (HSP) preparations to identify candidate EQA materials for alanine aminotransferase (ALT) and aspartate aminotransferase (AST) activity measurement. Methods One set each of 85 clinical samples (CSs) was collected for ALT and AST activity measurement. The 15 candidate EQA materials included four types of HSP preparations (A to D): materials A, C, and D contained human original recombinant (HOR) aminotransferases; materials B was mixed leftover samples. The CSs and 15 candidate EQA materials were analyzed using seven routine assays, and the ln-transformed results were analyzed in 21 assay pairs. Commutability was assessed using Deming regression, with a 95% prediction interval (CLSI approach) and the difference in bias with an error component model (International Federation of Clinical Chemistry and Laboratory Medicine [IFCC] approach). Results For ALT, all materials were commutable for 14–21 assay pairs according to the CLSI and IFCC approaches. For AST, B01–03 showed commutability for 14–21 assay pairs, and C01–03 and D01–03 showed commutability for no less than 10 assay pairs according to the two approaches. A01–06 were commutable for 9–16 assay pairs according to the CLSI approach, but for 6–9 assay pairs according to the IFCC approach. Conclusions Mixed leftover samples showed desirable commutability characteristics as candidate EQA materials for routine aminotransferase activity measurements. Human serum bases supplemented with HOR were commutable for most routine ALT activity measurements.
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Affiliation(s)
- Qichen Long
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| | - Tianqi Qi
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
| | - Tianjiao Zhang
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Beijing, P. R. China
| | - Jing Wang
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Beijing, P. R. China
| | - Jie Zeng
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Beijing, P. R. China
| | - Ying Yan
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Beijing, P. R. China
| | - Meng Wang
- Clinical Laboratory, Department, Beijing Hospital, National Center of Gerontology, Beijing, P. R. China
| | - Wei Huang
- The Ministry of Health Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, P. R. China
| | - Haijian Zhao
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Beijing, P. R. China
| | - Wenxiang Chen
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Beijing, P. R. China
| | - Chuanbao Zhang
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Beijing, P. R. China
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Gharib G, Chohan SM, Rashid N, Akhtar M. Heterologous gene expression and characterization of recombinant aspartate aminotransferase from Geobacillus thermopakistaniensis. Protein Expr Purif 2020; 175:105709. [PMID: 32738436 DOI: 10.1016/j.pep.2020.105709] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 07/11/2020] [Accepted: 07/11/2020] [Indexed: 11/27/2022]
Abstract
Aspartate aminotransferase catalyzes the transfer of an amino group from l-aspartate to α-oxoglutarate. A gene encoding aspartate aminotransferase, ASTGt, from Geobacillus thermopakistaniensis was cloned and expressed in Escherichia coli. The purified recombinant ASTGt exhibited highest activity at 65 °C and pH 7.0. The activity was dependent on pyridoxal phosphate but not on any metal ions. Stoichiometry of purified ASTGt demonstrated that 0.1 pyridoxal phosphate was attached per subunit of the enzyme. Determination of molecular weight by gel filtration chromatography indicated that ASTGt existed in a dimeric form in solution. Thermostability experiments showed no significant change in activity even after 16 h incubation at 65 °C. ASTGt exhibited apparent Vmax and Km values of 120 μmol min-1 mg-1 and 1.5 mM, respectively, against l-aspartate. Substrate specificity experiments indicated the highest relative activity against aspartate (100%) followed by tyrosine (27%) and proline (16%). To the best of our knowledge, this is the first report on cloning and characterization of an AST from genus Geobacillus.
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Affiliation(s)
- Ghazaleh Gharib
- School of Biological Sciences, University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Pakistan; Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla, 34956, Istanbul, Turkey
| | - Shahid Mahmood Chohan
- School of Biological Sciences, University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Pakistan
| | - Naeem Rashid
- School of Biological Sciences, University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Pakistan.
| | - Muhammad Akhtar
- School of Biological Sciences, University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Pakistan; School of Biological Sciences, University of Southampton, Southampton, UK
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Gallo S, Calle RA, Terra SG, Pong A, Tarasenko L, Raji A. Effects of Ertugliflozin on Liver Enzymes in Patients with Type 2 Diabetes: A Post-Hoc Pooled Analysis of Phase 3 Trials. Diabetes Ther 2020; 11:1849-1860. [PMID: 32648108 PMCID: PMC7376773 DOI: 10.1007/s13300-020-00867-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Indexed: 12/11/2022] Open
Abstract
INTRODUCTION This post hoc exploratory analysis examined the effects of ertugliflozin on liver enzymes in patients with type 2 diabetes mellitus (T2DM). METHODS Data were pooled from seven randomized, double-blind VERTIS phase 3 trials that evaluated ertugliflozin (5 mg and 15 mg) versus non-ertugliflozin (placebo, glimepiride, or sitagliptin) treatment in patients with T2DM. Change from baseline at week 52 of treatment in alanine and aspartate aminotransferase (ALT and AST, respectively) serum levels (overall and categorized into tertiles by baseline ALT and AST), Fibrosis-4 Index (FIB-4), glycated hemoglobin (HbA1c), and body weight were evaluated, along with the association between changes in ALT and AST and changes in HbA1c and body weight by treatment. RESULTS Baseline characteristics were balanced across treatment groups (ertugliflozin 5 mg, n = 1716; ertugliflozin 15 mg, n = 1693; non-ertugliflozin, n = 1450). At week 52 of treatment, serum levels of ALT and AST were reduced in patients in the ertugliflozin treatment groups (5 and 15 mg, respectively) compared with those in the non-ertugliflozin group. The comparator-adjusted mean (95% confidence interval [CI]) difference in change from baseline at week 52 for ALT was - 3.35 (- 4.40, - 2.31) IU/L for ertugliflozin 5 mg and - 4.08 (- 5.13, - 3.03) IU/L for ertugliflozin 15 mg; for AST, the respective values were - 1.81 (- 2.50, - 1.11) IU/L and - 2.12 (- 2.82, - 1.42) IU/L. The effects of ertugliflozin were detected across all baseline ALT and AST tertiles, with the highest tertile showing the greatest treatment differences. No meaningful differences were observed between treatment groups for FIB-4. Changes in ALT and AST showed a weak but statistically significant association with changes in HbA1c and body weight in all treatment groups. CONCLUSIONS Treatment with ertugliflozin resulted in a reduction in the levels of hepatic transaminases compared with the non-ertugliflozin group after 52 weeks of treatment. Changes in body weight and HbA1c contributed at least in part to the effects of ertugliflozin on liver enzymes. TRIAL REGISTRATION Clinicaltrials.gov registry numbers: NCT02033889, NCT01958671, NCT02036515, NCT01986855, NCT02099110, NCT02226003, NCT01999218.
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Abstract
BACKGROUND Hemorrhagic transformation (HT) is a common complication of ischemic stroke. We performed this study to determine whether aspartate aminotransferase (AST) to alanine aminotransferase (ALT) ratio (AAR) was related to HT, as well as compare the predictive values of AAR, ALT and AST for HT in patients with ischemic stroke. METHODS We included ischemic stroke patients within 7 days of onset. HT was identified by a follow-up imaging examination. Univariate and multivariate logistic regression models were performed to assess the association between AAR and HT. Net reclassification index (NRI) was calculated to assess the ability of AAR, AST and ALT to reclassify risks of HT. RESULTS A total of 2042 (median age: 69 years; 63.2% males) patients were included in this study, of whom 232 (11.4%) were identified as HT. The receiver-operating characteristic curve analysis showed that the optimal cut-off value for AAR to predict HT was 1.22. Higher AAR (≥1.22) was an independent predictor associated with HT (OR 1.44, 95%CI 1.06-1.97, P = 0.02) after adjusting for covariates. A U-shaped dose-effect relationship was found between AAR level and HT in logistic regression model with restricted cubic splines. In addition, adding AAR to a model containing conventional risk factors significantly improved predictive power for HT (NRI: 15.4%, P = 0.027), but not for ALT (NRI: 10.3%, P = 0.141) or AST (NRI: 8.3%, P = 0.237). CONCLUSIONS Higher AAR was associated with an increased risk of HT after ischemic stroke. In addition, AAR might be a better biomarker for predicting HT than ALT or AST.
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Affiliation(s)
- Yanan Wang
- Department of Neurology, West China Hospital, Sichuan University , Sichuan, China
| | - Ke Qiu
- West China School of Medicine, Sichuan University , Sichuan, China
| | - Quhong Song
- Department of Neurology, West China Hospital, Sichuan University , Sichuan, China
| | - Yajun Cheng
- Department of Neurology, West China Hospital, Sichuan University , Sichuan, China
| | - Junfeng Liu
- Department of Neurology, West China Hospital, Sichuan University , Sichuan, China
| | - Ming Liu
- Department of Neurology, West China Hospital, Sichuan University , Sichuan, China
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Lorzadeh E, Akhondi-Meybodi M, Mozaffari-Khosravi H, Mirzaei M, Salehi-Abargouei A. Association between empirically derived dietary patterns and liver function tests in adults: Shahedieh cohort study. Nutrition 2020; 81:110897. [PMID: 32738511 DOI: 10.1016/j.nut.2020.110897] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 05/03/2020] [Accepted: 06/06/2020] [Indexed: 12/27/2022]
Abstract
OBJECTIVES Limited data exist on the association between dietary patterns (DPs) and enzymes mainly produced by the liver. This study aimed to examine the relationship between empirically derived DPs and serum alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, and gamma glutamyl transferase (GGT) levels in addition to the alanine/aspartate aminotransferase ratio. METHODS This cross-sectional study was conducted on adults in the baseline phase of the Shahedieh cohort study in Yazd, Iran. Blood samples were taken from participants in a fasted state to provide data on dietary intake and other variables. Major DPs were derived using a principal component analysis. RESULTS In total, 4973 participants (age 46.33 ± 9.08 y) were included in the study. Three DPs were derived: Traditional diet (high in vegetables, fruits, tomatoes, dairy, dried fruits, fruit juice, yogurt, olive and olive oil, sweet desserts, and high-fat dairy products), western diet (high in pizza, refined grains, soft drinks, high-fat dairy products, processed meats, mayonnaise, and snack foods), and hydrogenated fat and sugar diet (high in hydrogenated fat, potatoes, sugars, and legumes). After adjustment for all confounders, the western DP had a significant linear association with serum GGT (P < 0.001). This diet was also associated with higher odds for developing abnormal levels of serum GGT (Ptrend < 0.001). Although the other DPs had some linear associations with enzymes levels, they were not associated with the likelihood for developing abnormally high liver enzymes levels. CONCLUSIONS A higher consumption of a western DP might adversely affect serum GGT levels. Prospective studies are recommended to confirm our results.
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Affiliation(s)
- Elnaz Lorzadeh
- Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran; Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mohsen Akhondi-Meybodi
- Department of Internal Medicine, School of Medicine, Shahid Sadoughi General Hospital, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Hassan Mozaffari-Khosravi
- Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran; Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Masoud Mirzaei
- Yazd Cardiovascular Research Center, Shahid Sadoughi General Hospital, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Amin Salehi-Abargouei
- Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran; Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
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Wang Y, Shi L, Wang Y, Yang H. An updated meta-analysis of AST and ALT levels and the mortality of COVID-19 patients. Am J Emerg Med 2020; 40:208-209. [PMID: 32475764 PMCID: PMC7251355 DOI: 10.1016/j.ajem.2020.05.063] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 05/24/2020] [Indexed: 12/22/2022] Open
Affiliation(s)
- Ying Wang
- Department of Epidemiology, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Li Shi
- Department of Epidemiology, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Yadong Wang
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - Haiyan Yang
- Department of Epidemiology, School of Public Health, Zhengzhou University, Zhengzhou 450001, China.
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Zhang GM, Zhang GM, Hu S, Peng YF, Gu B. Is testing of aspartate aminotransferase necessary along with every alanine aminotransferase for health check in elderly individuals? Clin Chim Acta 2020; 507:224-227. [PMID: 32380092 DOI: 10.1016/j.cca.2020.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/18/2020] [Accepted: 05/02/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVE This study is to evaluate whether Aspartate Aminotransferase (AST) is necessary to screen for liver function in apparently healthy elderly individuals. METHODS We derived the proportions of elevated ASTs that would not be measured based on 2018-year of paired Chinese elderly (Age ≥ 65 years old) check-up. Defined as AST > 40U/L is elevated. The relationship between alanine aminotransferase (ALT) and AST was analyzed by using Pearson's approach. Receiver operating characteristics curve analysis was used to evaluate the predictive accuracy of ALT for abnormal AST. RESULTS 52,857 pairs of ALT and AST were analyzed. Serum AST was found to be positively correlated with serum ALT, r = 0.81, p < 0.01 for the entire cohort. The receiver operating characteristics (ROC) curve of ALT for predicting positive AST is 0.918. The optimal threshold for ALT is 28 U/L with the sensitivity of 82.6%, and specificity of 86.8%. At the threshold, below 0.7% of subjects with positive AST were missed, but approximately 83% of the AST tests were eliminated. CONCLUSION Our study showed that tests of AST were not necessary along with every ALT test for health check in elderly individuals. An estimated 84.5% of subjects were not needed for AST tests which could have saved about CN¥ 815 million (USD$115 million or EURO$100 million) every year.
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Affiliation(s)
- Guo-Ming Zhang
- Department of Laboratory Medicine, The Affiliated Shuyang Hospital of Xuzhou Medical University, Shuyang 223600, China
| | - Gao-Ming Zhang
- Department of Laboratory Medicine, The Affiliated Shuyang Hospital of Xuzhou Medical University, Shuyang 223600, China
| | - Shan Hu
- Department of Laboratory Medicine, Xuzhou Tumor Hospital, Xuzhou 221005, China
| | - You-Fan Peng
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Bing Gu
- Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China; Medical Technology Institute of Xuzhou Medical University, Xuzhou 221004, China.
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Liang S, Tang J, Wang X, Wen Z, Xie M, Wu Y, Hou S, Zhang D. Effect of duck hepatitis A virus genotype 3 infection on glucose metabolism of Pekin ducklings and underlying mechanism. Gene 2020; 748:144710. [PMID: 32339622 DOI: 10.1016/j.gene.2020.144710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 04/12/2020] [Accepted: 04/23/2020] [Indexed: 10/24/2022]
Abstract
Earlier works identified the second generation (Z8R2) of a resistant Pekin duck line to duck hepatitis A virus genotype 3 (DHAV-3), which displays significantly strong resistance than that of the second generation (Z8S2) of a susceptible Pekin duck line. To understand the genetic mechanisms that determine the different resistance/susceptibility of Z8R2 and Z8S2 to DHAV-3, transcriptome analysis on livers of infected Pekin ducklings was performed to screen differentially expressed genes (DEGs). We found that DHAV-3 infection has a great effect on metabolism of Z8S2 at the transcription level. Using a newly created fourth generation of the resistant Pekin duck line (Z8R4) and an unselected Pekin duck flock (Z7) as models, hypoglycemia and dramatically increased aspartate aminotransferase and alanine aminotransferase were shown to be noticeable signs of fatal cases caused by DHAV-3 infection. These findings, together with expression analysis and verification of DEGs, support the view that DHAV-3 infection results in glucose metabolic abnormalities in susceptible individuals and that there are significant differences in expression patterns of glucose metabolism-related DEGs between susceptible and resistant individuals. Notably, cytokines displayed a negative correlation with glucose synthesis in terms of expression in susceptible individuals following DHAV-3 infection. Mechanism analyses suggests that cytokines will activate PI3K-AKT pathway and/or JAK-STAT pathway by up-regulated expression of JAK2, and thereby causes down-regulated expression of G6PC and/or ACAT1. Cytokines can also cause down-regulated expression of HPGDS by JAK2. The present work contributes to the understanding of pathogenesis of DHAV-3 infection and the resistance breeding project against DHAV-3.
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Affiliation(s)
- Suyun Liang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Jing Tang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xiaoyan Wang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Zhiguo Wen
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Ming Xie
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yongbao Wu
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Shuisheng Hou
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Dabing Zhang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
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Abstract
Rhabdomyolysis is a syndrome of skeletal muscle injury with release of cellular constituents such as potassium, phosphate, urate and intracellular proteins such as myoglobin into the circulation, which may cause complications including acute kidney injury, electrolyte disturbance and cardiac instability. Abnormal liver function tests are frequently observed in cases of severe rhabdomyolysis. Typically, there is an increase in serum aminotransferases, namely aspartate aminotransferase and alanine aminotransferase. This raises the question of liver injury and often triggers a pathway of investigation which may lead to a liver biopsy. However, muscle can also be a source of the increased aminotransferase activity. This review discusses the dilemma of finding abnormal liver function tests in the setting of muscle injury and the potential implications of such an association. It delves into some of the clinical and experimental evidence for correlating muscle injury to raised aminotransferases, and discusses pathophysiological mechanisms such as oxidative stress which may cause actual liver injury. Serum aminotransferases lack tissue specificity to allow clinicians to distinguish primary liver injury from muscle injury. This review also explores potential approaches to improve the accuracy of our diagnostic tools, so that excessive or unnecessary liver investigations can be avoided.
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Affiliation(s)
- Andy KH Lim
- Department of General Medicine, Monash Health, Clayton VIC 3168, Australia
- Department of Medicine, School of Clinical Sciences, Monash University, Clayton VIC 3168, Australia
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Rohani P, Imanzadeh F, Sayyari A, Kazemi Aghdam M, Shiari R. Persistent elevation of aspartate aminotransferase in a child after incomplete Kawasaki disease: a case report and literature review. BMC Pediatr 2020; 20:73. [PMID: 32066411 PMCID: PMC7025399 DOI: 10.1186/s12887-020-1975-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 02/12/2020] [Indexed: 11/24/2022] Open
Abstract
Background Interpretation of abnormalities in liver function tests, especially in asymptomatic children, is a common problem faced by clinicians. Isolated elevation of aspartate aminotransferase may further puzzle physicians. Macro-aspartate aminotransferase (AST) results from complexes AST produces with other plasma components, such as immunoglobulin. To our knowledge, this is the first report on a case of macro-AST-associated incomplete Kawasaki disease (KD). It is to make physicians aware of this benign condition and help to prevent extensive, unnecessary investigations and invasive workups. Case presentation A 16-month old boy with a 7-day history of fever was admitted to our pediatric ward for pyrexia workup. After complete investigations, KD was confirmed by a pediatric rheumatologist. During his admission and serial follow-up tests, an isolated AST elevation was noted. Comprehensive tests were performed and using the polyethylene glycol (PEG) precipitation method, macro-AST was confirmed. The patient has been followed up for 3 years, and so far, the benign nature of this condition has been confirmed. Conclusion Clinicians should consider testing for macro-AST when elevated AST is the only abnormal lab finding. Although an uncommon finding, macro-AST may be seen in both children and adults. There are many reasons for this phenomenon, including resolved acute hepatitis or in some cases, inflammatory bowel disease, hepatic malignancy, monoclonal gammapathy, celiac disease, or KD; however, it may be observed in asymptomatic healthy children as well. Using the PEG precipitation method, a definitive diagnosis can be made. In none of these conditions does macro-AST have any prognostic significance. An appreciation of macro-AST may prevent the need for more invasive investigations to which patients may be unnecessarily subjected. It is important to recognize this condition as benign and assure patients that no specific treatment is required.
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Affiliation(s)
- Pejman Rohani
- Pediatric Gastroenterology, Hepatology and Nutrition Research Center, Research Institute for Children Health, Shahid Beheshti University of Medical Sciences, Shariati Ave, in front of Hoseinieh Ershad, Tehran, Iran.
| | - Farid Imanzadeh
- Pediatric Gastroenterology, Hepatology and Nutrition Research Center, Research Institute for Children Health, Shahid Beheshti University of Medical Sciences, Shariati Ave, in front of Hoseinieh Ershad, Tehran, Iran
| | - Aliakbar Sayyari
- Pediatric Pathology Research Center, Research Institute for Children Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Kazemi Aghdam
- Pediatric Research Institute for Children Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Shiari
- Pediatric Research Institute for Children Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Mueser TC, Drago V, Kovalevsky A, Dajnowicz S. Pyridoxal 5'-phosphate dependent reactions: Analyzing the mechanism of aspartate aminotransferase. Methods Enzymol 2020; 634:333-359. [PMID: 32093839 DOI: 10.1016/bs.mie.2020.01.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Enzyme catalysis is the primary activity in energy and information metabolism and enzyme cofactors are key to the catalytic ability of most enzymes. Pyridoxal 5'-phosphate (PLP) cofactor, derived from Vitamin B6, is widely distributed in nature and has significant latitude in catalytic diversity. X-ray crystallography has revealed the structures of diverse PLP dependent enzymes from multiple families. But these structures are incomplete, lacking the positions of protons essential for understanding enzymatic mechanisms. Here, we review the diversity of PLP and discuss the use of neutron crystallography and joint X-ray/neutron refinement of Fold Type I aspartate aminotransferase to visualize the positions of protons in both the internal and external aldimine forms. Strategies used to prepare extremely large crystals required for neutron diffraction and the approach to data refinement including the PLP cofactor are discussed. The observed positions of protons, including one located in a previously unknown low-barrier hydrogen bond, have been used to create more accurate models for computational analysis. The results revealed a new mechanism for the transaminase reaction where hyperconjugation is key to reducing the energy barrier which finally provides a clear explanation of the Dunathan alignment.
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Affiliation(s)
- Timothy C Mueser
- Department of Chemistry and Biochemistry, University of Toledo, Toledo, OH, United States.
| | - Victoria Drago
- Department of Chemistry and Biochemistry, University of Toledo, Toledo, OH, United States
| | - Andrey Kovalevsky
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States
| | - Steven Dajnowicz
- Department of Chemistry and Biochemistry, University of Toledo, Toledo, OH, United States; Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States
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Zhu Z, Zhang L, Chen Q, Li K, Yu X, Tang C, Kong W, Jin H, Du J, Huang Y. Macrophage-derived sulfur dioxide is a novel inflammation regulator. Biochem Biophys Res Commun 2020; 524:916-922. [PMID: 32057367 DOI: 10.1016/j.bbrc.2020.02.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 02/03/2020] [Indexed: 12/17/2022]
Abstract
Macrophage-mediated inflammation is a key pathophysiological component of cardiovascular diseases, but the underlying mechanisms by which the macrophage regulates inflammation have been unclear. In our study, we, for the first time, showed an endogenous sulfur dioxide (SO2) production in RAW267.4 macrophages by using HPLC and SO2-specific fluorescent probe assays. Moreover, the endogenous SO2 generating enzyme aspartate aminotransferase (AAT) was found to be expressed by the macrophages. Furthermore, we showed that AAT2 knockdown triggered spontaneous macrophage-mediated inflammation, as represented by the increased TNF-α and IL-6 levels and the enhanced macrophage chemotaxis; these effects could be reversed by the treatment with a SO2 donor. Mechanistically, AAT2 knockdown activated the NF-κB signaling pathway in macrophages, while SO2 successfully rescued NF-κB activation. In contrast, forced AAT2 expression reversed AngII-induced NF-κB activation and subsequent macrophage inflammation. Moreover, treatment with a SO2 donor also alleviated macrophage infiltration in AngII-treated mouse hearts. Collectively, our data suggest that macrophage-derived SO2 is an important regulator of macrophage activation and it acts as an endogenous "on-off switch" in the control of macrophage activation. This knowledge might enable a new therapeutic strategy for cardiovascular diseases.
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Affiliation(s)
- Zhigang Zhu
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Lulu Zhang
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Qinghua Chen
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Kun Li
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, China
| | - Xiaoqi Yu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, China
| | - Chaoshu Tang
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Beijing, China; Key Laboratory of Molecular Cardiology, Ministry of Education, Beijing, China
| | - Wei Kong
- Department of Physiology and Pathophysiology, Peking University Health Science Center, Beijing, China; Key Laboratory of Molecular Cardiology, Ministry of Education, Beijing, China
| | - Hongfang Jin
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Junbao Du
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Yaqian Huang
- Department of Pediatrics, Peking University First Hospital, Beijing, China.
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Schreiner AD, Bian J, Zhang J, Haulsee ZM, Marsden J, Durkalski-Mauldin V, Mauldin PD, Moran WP, Rockey DC. The Association of Abnormal Liver Tests with Hepatitis C Testing in Primary Care. Am J Med 2020; 133:214-221.e1. [PMID: 31369723 PMCID: PMC6980508 DOI: 10.1016/j.amjmed.2019.07.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 06/27/2019] [Accepted: 07/01/2019] [Indexed: 12/25/2022]
Abstract
BACKGROUND As hepatitis C virus birth cohort (1945-1965) screening in primary care improves, testing patterns in response to persistently abnormal liver tests are less well known. METHODS This retrospective cohort study of a patient-centered medical home between 2007 and 2016 evaluates the association of abnormal liver chemistries and other clinical and demographic factors with hepatitis C antibody (HCV Ab) testing in patients with persistently abnormal liver tests. Patients with at least 2 consecutive abnormal liver tests were categorized by the clinical pattern of liver chemistry abnormality, including cholestatic, hepatocellular, and mixed patterns. The primary outcomes were: 1) completed HCV Ab tests; and 2) positive HCV Ab results for those patients tested. RESULTS Of 4512 patients with consecutive abnormal liver tests, only 730 (16%) underwent HCV Ab testing within 1 year of the second abnormality; 81/730 (11%) had HCV Ab detected. A logistic regression model revealed that mixed (odds ratio [OR] 2.20; 95% confidence interval [CI], 1.72-2.82) and hepatocellular (OR 1.43; 95% CI, 1.15-1.79) patterns of liver test abnormality, female sex, and alcohol and tobacco abuse were associated with higher odds of HCV Ab testing. Hepatocellular (OR 7.51; 95% CI, 2.18-25.94) and mixed patterns (OR 5.88; 95% CI, 1.64-21.15) of liver test abnormalities, male sex, Medicaid enrollment, and drug and tobacco abuse had higher odds of positive HCV Ab results. CONCLUSIONS There is opportunity to improve hepatitis C diagnostic testing in patients with consecutively elevated liver tests, and hepatocellular and mixed patterns of abnormality should prompt primary care providers to action.
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Affiliation(s)
- Andrew D Schreiner
- Department of Medicine, Medical University of South Carolina, Charleston, SC.
| | - John Bian
- Department of Medicine, Medical University of South Carolina, Charleston, SC
| | - Jingwen Zhang
- Department of Medicine, Medical University of South Carolina, Charleston, SC
| | - Z Merle Haulsee
- Department of Medicine, Medical University of South Carolina, Charleston, SC
| | - Justin Marsden
- Department of Medicine, Medical University of South Carolina, Charleston, SC
| | | | - Patrick D Mauldin
- Department of Medicine, Medical University of South Carolina, Charleston, SC
| | - William P Moran
- Department of Medicine, Medical University of South Carolina, Charleston, SC
| | - Don C Rockey
- Department of Medicine, Medical University of South Carolina, Charleston, SC
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Han BL, Wang YM, Xue YW. [Effect of preoperative serum alanine aminotransferase and asparagine aminotransferase ratio on prognosis of patients with gastric cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:65-70. [PMID: 31958933 DOI: 10.3760/cma.j.issn.1671-0274.2020.01.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the relationship of liver function index alanine aminotransferase and aspartate aminotransferase ratio (LSR) with clinicopathological factors in patients with gastric cancer and its clinical significance in predicting the survival of patients. Methods: A retrospective case-control study was used. Retrospective analysis was conducted on 891 patients with advanced gastric cancer who underwent gastric cancer surgery at the Gastrointestinal Surgery Department of Harbin Medical University Cancer Hospital from January 2007 to December 2010, having complete postoperative clinicopathological and follow-up data. Case inclusion criteria: (1) preoperative definite diagnosis of gastric cancer, residual gastric cancer and other gastric tumors were excluded; (2) no neoadjuvant therapy before surgery; (3) no other serious diseases such as acute coronary heart disease, cirrhosis, chronic renal failure, etc.; (4) radical gastrectomy was performed, palliative treatment or open laparotomy cases were excluded; (5) complete postoperative pathological data, complete follow-up information; (6) cause of death was associated with gastric cancer. Blood examination was performed during hospitalization. The best cut-off points of LSR, hemoglobin, lymph node metastasis rate, maximum diameter of tumors, alkaline phosphatase, glutamyl transpeptidase, total bilirubin and lactate dehydrogenase were obtained by using receiver operating characteristic curve(ROC). Patients were divided into two groups according to best LSR cut-off points. The relationship between LSR and clinicopathological factors was analyzed, and the overall survival rate of different LSR groups was compared. Relevant clinical factors and LSR were included in the univariate and multivariate survival analysis using the Cox method. Results: The best cut-off point of LSR in ROC curve was 1.43, and 682 cases in LSR<1.43 group, 209 cases in LSR≥1.43 group. The best cut-off points of hemoglobin, lymph node metastasis rate, maximum diameter of tumors, alkaline phosphatase, glutamyl transpeptidase, total bilirubin and lactate dehydrogenase were 130.2 g/L, 18.0%, 4.75 cm, 68.1 U/L, 16.55 U/L, 5.58 μmol/L and 135.8 U/L, respectively. Between patients with LSR<1.43 and LSR≥1.43, age (χ(2)=4.412, P=0.036), depth of tumor invasion (χ(2)=64.306, P<0.001), histological type (χ(2)=8.026, P=0.005), alkaline phosphatase (χ(2)=8.217, P=0.004), glutamyl transpeptidase (χ(2)=33.207, P<0.001), total bilirubin (χ(2)=14.012, P<0.001) and lactate dehydrogenase (χ(2)=63.630, P<0.001) were significantly different. The 1-, 3- and 5-year survival rates of LSR<1.43 group and LSR≥1.43 group were 70.8%, 31.3%, 25.0% and 64.9%, 24.4%, 11.3% respectively, whose difference was significant (χ(2)=10.140, P=0.001). Univariate analysis showed that age, hemoglobin, TNM stage, depth of invasion, lymph node metastasis rate, lymph node metastasis, histological type, maximum diameter of tumors, glutamyl transferase, total bilirubin and LSR were associated with overall survival of gastric cancer (all P<0.05). Multivariate analysis showed that tumor TNM stage (HR=1.605, 95%CI: 1.332 to 1.936, P<0.001), tumor invasion depth (HR=1.299, 95%CI: 1.168 to 1.445, P<0.001), lymph node metastasis rate (HR=2.400, 95%CI:1.873 to 3.076, P<0.001), lymph node metastasis (HR=1.263, 95%CI: 1.106 to 1.478, P=0.007), maximum tumor diameter (HR=1.375, 95%CI: 1.134 to 1.669, P=0.001), and LSR (HR=1.427, 95%CI: 1.190 to 1.711, P<0.001) were independent risk factors for the prognosis of patients with gastric cancer. Conclusions: LSR is an independent risk factor for the prognosis of gastric cancer patients, and the detection is simple and easy. It is a potential marker for the prognosis of gastric cancer. Therefore, in the preoperative comprehensive management stage, it should be possible to restore and improve the liver function in order to obtain a better prognosis of gastric cancer and prolong the survival time of patients.
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Yamamoto JM, Prado-Núñez S, Guarnizo-Poma M, Lazaro-Alcantara H, Paico-Palacios S, Pantoja-Torres B, Del Carmen Ranilla-Seguin V, Benites-Zapata VA. Association between serum transaminase levels and insulin resistance in euthyroid and non-diabetic adults. Diabetes Metab Syndr 2020; 14:17-21. [PMID: 31809968 DOI: 10.1016/j.dsx.2019.11.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 11/11/2019] [Indexed: 01/18/2023]
Abstract
AIM To evaluate the association between elevated serum transaminase levels and insulin resistance (IR) in a population of healthy individuals. METHODS We define IR with a cut-off point of homeostatic model assessment (HOMA-IR) ≥ 3.8. For aspartate aminotransferase (AST), we consider elevated values >30 U/L in women and values >36 U/L in men. For alanine aminotransferase (ALT), we consider elevated values >30 U/L in women and values >40 U/L in men. We performed a crude and adjusted generalized linear model from Poisson family with robust variance, in order to evaluate the association between elevated serum transaminase levels and IR. The associations were presented as prevalence ratio (PR) with their respective 95% confidence intervals (95% CI). RESULTS We included 261 participants in the study. The median age was 39 years (31-45) and 23.7% of the participants were men. The prevalence of elevated serum transaminase for AST and ALT were, 13.8% and 26.1%, respectively. The prevalence of IR was 34.1%. In the crude analysis we found statistical significance between elevated AST and ALT with IR (PR = 3.18; 95% CI: 2.33-4.34 and PR = 2.44; 95% CI: 1.88-3.30; respectively). However, in the multivariate analysis, the association only remained statistically significance with ALT, but lost its significance with AST, PR = 1.90; CI 95%: 1.31-2.77 and a PR = 1.23; CI 95%: 0.93-1.61; respectively. CONCLUSION Elevated serum levels of ALT were associated with insulin resistance. ALT could be used in clinical practice as an additional tool to assess IR in apparently healthy people.
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Affiliation(s)
- Jin Marcos Yamamoto
- School of Medicine, Universidad Peruana de Ciencias Aplicadas, Campus Villa, Avenida Alameda de San Marcos, Chorrillos, Lima 9, Peru.
| | - Sebastián Prado-Núñez
- School of Medicine, Universidad Peruana de Ciencias Aplicadas, Campus Villa, Avenida Alameda de San Marcos, Chorrillos, Lima 9, Peru.
| | - Mirella Guarnizo-Poma
- Instituto Médico de La Mujer, Instituto Médico Metabólico, Av. Javier Prado Este 1476, Lima, Peru.
| | - Herbert Lazaro-Alcantara
- Instituto Médico de La Mujer, Instituto Médico Metabólico, Av. Javier Prado Este 1476, Lima, Peru.
| | - Socorro Paico-Palacios
- Instituto Médico de La Mujer, Instituto Médico Metabólico, Av. Javier Prado Este 1476, Lima, Peru.
| | - Betzi Pantoja-Torres
- Instituto Médico de La Mujer, Instituto Médico Metabólico, Av. Javier Prado Este 1476, Lima, Peru.
| | | | - Vicente A Benites-Zapata
- School of Medicine, Universidad Peruana de Ciencias Aplicadas, Campus Villa, Avenida Alameda de San Marcos, Chorrillos, Lima 9, Peru.
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Zhan MR, Liu X, Zhang MY, Niu JQ. Isolated elevated aspartate aminotransferase in an asymptomatic woman due to macro-aspartate aminotransferase: A case report. World J Clin Cases 2019; 7:4414-4419. [PMID: 31911926 PMCID: PMC6940328 DOI: 10.12998/wjcc.v7.i24.4414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/13/2019] [Accepted: 11/30/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Macro-aspartate aminotransferase (AST), a macroenzyme, is a high-molecular mass complex formed by self-polymerization or association with other serum components that are difficult for the kidney to clear, leading to the isolated elevation of serum AST activity. Cases of macro-AST formation are rare, with only 3 published in the English language literature up to September 2019 in China. In this paper, we present a case in which an asymptomatic woman with persistent isolated elevated AST was confirmed as having macro-AST by the polyethylene glycol precipitation method.
CASE SUMMARY A 34-year-old woman was referred to our clinic for elevated AST levels with normal levels of other liver-associated enzymes on November 12, 2018. Her AST level of liver function test had been abnormal for 7 mo before she came to the clinic. The patient was asymptomatic with a normal physical examination. There was no relevant family history and no alcohol consumption or smoking. She had a several-month history of traditional Chinese medical taking and had stopped it 1 year prior. The laboratory tests in our clinic showed only the elevation of AST (89.5 U/L) with no other significant abnormalities. We performed the precipitation technique with polyethylene glycol to confirm the presence of macro-AST. Then for almost a year, her AST level still fluctuated in the abnormal range.
CONCLUSION This case highlights that clinical physicians should be familiar with this rare condition of persistent isolated AST elevation due to the presence of macro-AST to avoid unnecessary investigation and patient anxiety.
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Affiliation(s)
- Meng-Ru Zhan
- Department of Hepatology, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Xu Liu
- Department of Hepatology, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Ming-Yuan Zhang
- Department of Hepatology, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Jun-Qi Niu
- Department of Hepatology, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
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Yousefi Rad E, Eslampour E, Falahi E, Mardani M, Hekmatdoost A, Asbaghi O, Saboori S. Effects of carnitine supplementation on liver aminotransferase enzymes: A systematic review and meta-analysis of randomized controlled clinical trials. Indian J Gastroenterol 2019; 38:470-479. [PMID: 31828538 DOI: 10.1007/s12664-019-00983-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 08/13/2019] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND AIMS This meta-analysis of the randomized controlled trials was performed to assess effects of carnitine supplementation on serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels. METHODS A comprehensive literature search of PubMed, Cochrane's library, Web of Science, Scopus, and Embase was performed up to May 2018. From a total of 2012 articles identified initially, only 17 articles were included in the final meta-analysis to evaluate the effects of carnitine supplementation on serum levels of ALT and AST enzymes. RESULTS Random effects model meta-analysis showed that carnitine supplementation led to reduction in serum ALT (weighted mean difference [WMD] - 10.25 IU/L; 95% CI = - 15.73, - 4.77; p < 0.001) and AST levels (WMD - 7.85 IU/L; 95% CI = - 11.85, - 3.86; p < 0.001). The results of subgroup analysis showed that carnitine could reduce serum AST levels at dosages equal to 2000 mg/day (p = 0.014) or more than 2000 mg/day (p < 0.001). However, carnitine supplementation at dosages of ≤ 1000 mg/day (p = 0.035) or equal to 2000 mg/day (p = 0.013) resulted in significant reduction in ALT level, while doses more than 2000 mg/day did not change ALT significantly. Carnitine exerts its reducing effect on serum ALT and AST levels only when these aminotransferases are raised or when the duration of supplementation lasts at least 3 months. CONCLUSION Results of the current meta-analysis showed that carnitine supplementation can decrease serum AST and ALT levels significantly, especially when supplementation lasts 3 months or more in patients with elevated serum aminotransferase levels.
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Affiliation(s)
- Esmaeil Yousefi Rad
- Nutritional Health Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Elham Eslampour
- Student Research Committee, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Ebrahim Falahi
- Nutritional Health Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Mahnaz Mardani
- Nutritional Health Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Azita Hekmatdoost
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Division of Gastroenterology, Hepatology and Nutrition, British Columbia's Children's Hospital and Child and Family Research Institute, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Omid Asbaghi
- Student Research Committee, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Somayeh Saboori
- Nutritional Health Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran.
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Hasegawa D, Kito K, Maeda T, Rai V, Cha-Um S, Tanaka Y, Fukaya M, Takabe T. Functional characterization of aminotransferase involved in serine and aspartate metabolism in a halotolerant cyanobacterium, Aphanothece halophytica. Protoplasma 2019; 256:1727-1736. [PMID: 31342153 DOI: 10.1007/s00709-019-01414-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 07/04/2019] [Indexed: 06/10/2023]
Abstract
Aminotransferases catalyze the reversible pyridoxal phosphate-dependent transfer of amino groups from amino acids to oxo acids and play important roles for the balance between carbon and nitrogen metabolism. In this report, four aminotransferases (Ap1-Ap4) from a halotolerant cyanobacterium Aphanothece halophytica were examined. The results revealed that Ap1 and Ap2 exhibited the aspartate:2-oxoglutarate aminotransferase (AspAT) activity whereas Ap2 catalyzed further aminotransferase activities with alanine (AlaAT) and LL-diaminopimelate (an intermediate for the synthesis of Lys/peptidoglycan) as amino donors. Ap4 exhibited bifunctional aminotransferase with phosphoserine (PSAT) and glycine (GGAT) as amino donors. No activity was observed for Ap3. We identified third gene encoding phosphoserine phosphatase (PSP) in phosphorylate serine biosynthetic pathway. The levels of mRNA for Ap2 and ApMurE encoding UDP-N-acetylmuramoyl-L-alanyl-D-glutamate-2,6-diaminopimelate ligase were increased after salt stress. These results suggest the link among photorespiratory metabolite (serine, glycine, glyoxylate), phosphorylate serine biosynthetic pathway and aspartate metabolism via aminotransferases for the synthesis of peptidoglycan and betaine under salt stress conditions.
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Affiliation(s)
- Daichi Hasegawa
- Graduate School of Environmental and Human Sciences, Meijo University, Nagoya, 468-8502, Japan
| | - Kunihide Kito
- Research Institute, Meijo University, Nagoya, 468-8502, Japan
| | - Takumi Maeda
- Graduate School of Environmental and Human Sciences, Meijo University, Nagoya, 468-8502, Japan
| | - Vandna Rai
- National Research Center on Plant Biotechnology, Pusa Campus, New Delhi, 110012, India
| | - Suriyan Cha-Um
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand
| | - Yoshito Tanaka
- Graduate School of Environmental and Human Sciences, Meijo University, Nagoya, 468-8502, Japan
| | - Minoru Fukaya
- Faculty of Science & Technology, Meijo University, Nagoya, 468-8502, Japan
| | - Teruhiro Takabe
- Research Institute, Meijo University, Nagoya, 468-8502, Japan.
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Wang Q, Chen Q, Zhang X, Lu XL, Du Q, Zhu T, Zhang GY, Wang DS, Fan QM. Diagnostic value of gamma-glutamyltransferase/ aspartate aminotransferase ratio, protein induced by vitamin K absence or antagonist II, and alpha-fetoprotein in hepatitis B virus-related hepatocellular carcinoma. World J Gastroenterol 2019; 25:5515-5529. [PMID: 31576097 PMCID: PMC6767977 DOI: 10.3748/wjg.v25.i36.5515] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/25/2019] [Accepted: 09/09/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Researchers have investigated the diagnostic value of protein induced by vitamin K absence or antagonist II (PIVKA-II) and alpha-fetoprotein (AFP) in hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC), and obtained abundant clinical diagnostic data. However, PIVKA-II and AFP have unsatisfactory specificity and sensitivity in the diagnosis of early-stage HBV-related HCC. Gamma-glutamyltransferase (γ-GT) and aspartate aminotransferase (AST) are common biomarkers for evaluating liver function, and we hypothesized that the γ-GT/AST ratio in combination with PIVKA-II and AFP would improve the diagnosis of early-stage HBV-related HCC. AIM To evaluate the diagnostic value of γ-GT/AST ratio alone or in combination with PIVKA-II and AFP in HBV-related HCC. METHODS Serum levels of γ-GT, AST, PIVKA-II, and AFP were detected and analysed in 176 patients with HBV-related HCC and in 359 patients with chronic hepatitis B. According to tumour size and serum level of HBV DNA, HBV-related HCC patients were divided into the following categories: Early-stage HCC patients, HCC patients, HBV DNA positive (HBV DNA+) HCC patients, and HBV DNA negative (HBV DNA-) HCC patients. Receiver-operating characteristic (ROC) curves were used to analyse and compare the diagnostic value of the single and combined detection of various biomarkers in different types of HBV-related HCC. RESULTS Tumour size was positively correlated with serum levels of PIVKA-II and AFP in HCC patients (r = 0.529, a P < 0.001 and r = 0.270, b P < 0.001, respectively), but there was no correlation between tumour size and the γ-GT/AST ratio (r = 0.073, P = 0.336). The areas under the receiver-operating characteristic curves (AUROCs) of the γ-GT/AST ratio in early-stage HCC patients, HBV DNA+ HCC patients and HBV DNA- HCC patients were not significantly different from that in the total HCC patients (0.754, 0.802, and 0.705 vs 0.779, respectively; P > 0.05). When PIVKA-II was combined with the γ-GT/AST ratio in the diagnosis of early-stage HCC, HCC, and HBV DNA+ HCC, the AUROCs of PIVKA-II increased, with values of 0.857 vs 0.835, 0.925 vs 0.913, and 0.958 vs 0.954, respectively. When AFP was combined with the γ-GT/AST ratio in the diagnosis of early-stage HCC, HCC, HBV DNA+ HCC, and HBV DNA- HCC, the AUROCs of AFP increased, with values of 0.757 vs 0.621, 0.837 vs 0.744, 0.868 vs 0.757, and 0.840 vs 0.828, respectively. CONCLUSION The γ-GT/AST ratio may be better than PIVKA-II and AFP in the diagnosis of early-stage HBV-related HCC, and its combination with PIVKA-II and AFP can improve the diagnostic value for HBV-related HCC.
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Affiliation(s)
- Qiang Wang
- Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
- Faculty of Laboratory Medicine, Center for Translational Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
| | - Qi Chen
- Department of Laboratory Medicine, Affiliated Sichuan Ba-Yi Rehabilitation Center of Chengdu University of TCM, Chengdu 610000, Sichuan Province, China
| | - Xia Zhang
- Department of Laboratory Medicine of the Ninth People’s Hospital of Chongqing, Chongqing 400700, China
| | - Xiao-Lan Lu
- Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
| | - Qin Du
- Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
| | - Tao Zhu
- Department of Preventive Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
| | - Guo-Yuan Zhang
- Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
| | - Dong-Sheng Wang
- Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
| | - Qu-Ming Fan
- Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
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Zhang LX, Lv Y, Xu AM, Wang HZ. The prognostic significance of serum gamma-glutamyltransferase levels and AST/ALT in primary hepatic carcinoma. BMC Cancer 2019; 19:841. [PMID: 31455253 PMCID: PMC6712845 DOI: 10.1186/s12885-019-6011-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 08/02/2019] [Indexed: 12/26/2022] Open
Abstract
Background Blood counting and the liver function tests, as the routine examinations, can reflect the immune and nutritional status of the body, our aim is to assess the prognostic significance of serum gamma-glutamyltransferase (GGT) levels and AST/ALT in primary hepatic carcinoma. Methods Clinico-pathological data of 414 patients with primary hepatic carcinoma in the 1st Affiliated Hospital of Anhui Medical College between January 2007 to January 2014 was analyzed retrospectively in this study. Survival curves were described by Kaplan-Meier method and compared by Log-rank test, univariate and multivariate analysis were used to identify the prognostic factors. Results GGT was positively correlated with the tumor size(P = 0.000), tumor volume (P = 0.000), tumor volume percent (P = 0.004), TNM stage(P = 0.009), 1-year survival rate (P = 0.000), 3- years survival rate (P = 0.000) and 5-years survival rate(P = 0.000). The serum ALT/AST was significantly correlated with age (P = 0.047), tumor size(P = 0.002), tumor volume (P = 0.010), tumor volume percent (P = 0.005), TNM stage(P = 0.006), liver cirrhosis(P = 0.003), 3- years survival rate (P = 0.032) and 5-years survival rate(P = 0.000). The Kaplan-Meier curves showed that the patients with primary hepatic carcinoma had a longer time in the low GGT group and low AST/ALT group, showing a significant difference (P < 0.05). The univariate and multivariate analyses showed that TNM stage, differentiation grade, tumor volume, GGT and AST/ALT were independent factors for predicting overall survival rate of primary hepatic carcinoma patients. Conclusions GGT and AST/ALT were independent factors for predicting overall survival rate of primary hepatic carcinoma patients.
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Affiliation(s)
- Li-Xiang Zhang
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yang Lv
- Second People's Hospital of Jingmen City, Hubei Province, China
| | - A-Man Xu
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Anhui Medical University, Hefei, China.
| | - Huan-Zhong Wang
- the tenth oncology department, Hefei Cancer Hospital of Chinese Academy of Sciences, Hefei, China.
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Pascarella S. Computational classification of MocR transcriptional regulators into subgroups as a support for experimental and functional characterization. Bioinformation 2019; 15:151-159. [PMID: 31435161 PMCID: PMC6677901 DOI: 10.6026/97320630015151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 02/03/2019] [Indexed: 11/23/2022] Open
Abstract
MocR bacterial transcriptional regulators are a subfamily within the GntR family. The MocR proteins possess an N-terminal domain
containing the winged Helix-Turn-Helix (wHTH) motif and a C-terminal domain whose architecture is homologous to the fold type-I
pyridoxal 5'-phosphate (PLP) dependent enzymes and whose archetypical protein is aspartate aminotransferase (AAT). The ancestor of the
fold type-I PLP dependent super-family is considered one of the earliest enzymes. The members of this super-family are the product of
evolution which resulted in a diversified protein population able to catalyze a set of reactions on substrates often containing amino groups.
The MocR regulators are activators or repressors of gene control within many metabolic pathways often involving PLP enzymes. This
diversity implies that MocR specifically responds to different classes of effector molecules. Therefore, it is of interest to compare the AAT
domains of MocR from six bacteria phyla. Multi dimensional scaling and cluster analyses suggested that at least three subgroups exist
within the population that reflects functional specialization rather than taxonomic origin. The AAT-domains of the three clusters display
variable degree of similarity to different fold type-I PLP enzyme families. The results support the hypothesis that independent fusion
events generated at least three different MocR subgroups.
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Affiliation(s)
- Stefano Pascarella
- Structural bioinformatics and Molecular modelling Lab;Dipartimento di Scienze biochimiche;Sapienza Universita di Roma;00185 Roma,Italy
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Vijayakumar K, Rengarajan RL, Radhakrishnan R, Mathew S, Qadri I, Vijaya Anand A. Psidium guajava Leaf Extracts and Their Quercetin Protect HepG2 Cell Lines Against CCL 4 Induced Cytotoxicity. Indian J Clin Biochem 2019; 34:324-9. [PMID: 31391723 DOI: 10.1007/s12291-018-0752-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Accepted: 04/06/2018] [Indexed: 01/10/2023]
Abstract
The present study was carried out to evaluate the in vitro cytoprotective effects of Psidium guajava and their isolated quercetin fraction to reduce the CCl4 (carbon tetrachloride) induced toxicity in HepG2 cell lines (Hepatocellular carcinoma G2). Silymarin was used as a standard drug to compare the protective effects of plant extracts in infected cell lines. MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide) assay, cell viability assay, leakage parameters [Aspartate aminotransferase (AST), Alanine aminotransferase (ALT) and Lactate dehydrogenase (LDH)], lipid peroxidation and reduced glutathione (GSH) levels were used to find out the protection of human derived HepG2 cells against CCl4-induced damage. The levels of cytotoxicity, viability and GSH were reduced. While the activities of AST, ALT, LDH and lipid peroxidation was increased in CCl4-treated groups. The treatment of P. guajava and their isolated quercetin fractions (100, 200, 300 µg/mL) decreased the elevated levels of all these parameters. The results of the present study suggest that the ethanolic extract of P. guajava leaf and their isolated quercetin fractions can able to reduce the CCl4-induced cytotoxicity in HepG2 cell lines.
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73
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Muzumbukilwa WT, Kadima MG, Nlooto M, Owira PMO. Mapping the evidence of hepatoprotective properties of Moringa oleifera from sub-Saharan African countries: a systematic review protocol. Syst Rev 2019; 8:197. [PMID: 31395082 PMCID: PMC6688223 DOI: 10.1186/s13643-019-1117-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 07/26/2019] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND One of the most challenging health problems is liver disease, which can be caused by medications, toxic substances, and excessive consumption of alcohol. Liver problems can be also caused by infections, autoimmune disorders, and food. This study aims to establish evidence of the use of Moringa oleifera in sub-Saharan African countries to manage liver damage conditions in animals. METHODS In vivo studies will include those in which the activity of the serum levels of hepatic enzymes alanine transaminase (ALT) or serum glutamate-pyruvate transaminase (SGPT), aspartate transaminase (AST) or serum glutamic oxaloacetic transaminase (SGOT), gamma-glutamyltransferase (GGT), alkaline phosphatase (ALP), superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), and malondialdehyde (MDA) were measured after administering substances that induced liver injury as a primary outcome. The secondary outcome will include studies that measure the serum levels of hepatic enzymes (ALT, AST, GGT and ALP, SOD, CAT, and GR), free radical formation represented by MDA after administering the sub-Saharan Moringa oleifera, and decreases in their levels indicating the improvement of their activity. Search engines will include MEDLINE, CINAHL, PubMed, Google Scholar, SABINET, EBSCO, and WHO/African Index Medicus. The screened results will be grouped according to any noteworthy grouping variable, such as study characteristics. Data will be analyzed using Stata statistical software (Stata Corp V.14, TX, USA). Study data will be quantitatively synthesized by first assessing heterogeneity to examine whether the estimates from included studies could be pooled. Heterogeneity will be assessed by the chi-squared test on Cochran's Q statistic, which will be quantified by I 2 values. DISCUSSION Results from this protocol will give new insights into the Moringa oleifera plant for developing effective hepatoprotective drugs against liver damage. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42018084698 .
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Affiliation(s)
- Willy Tambwe Muzumbukilwa
- The Discipline of Pharmaceutical Sciences, School of Health Sciences, Westville Campus, University of KwaZulu-Natal, University Road, Durban, 4001 South Africa
| | - Mukanda Gedeon Kadima
- The Discipline of Pharmaceutical Sciences, School of Health Sciences, Westville Campus, University of KwaZulu-Natal, University Road, Durban, 4001 South Africa
| | - Manimbulu Nlooto
- The Discipline of Pharmaceutical Sciences, School of Health Sciences, Westville Campus, University of KwaZulu-Natal, University Road, Durban, 4001 South Africa
| | - Peter Mark Oroma Owira
- The Discipline of Pharmaceutical Sciences, School of Health Sciences, Westville Campus, University of KwaZulu-Natal, University Road, Durban, 4001 South Africa
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74
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Choi H, Oh HJ, Shin JS, Lim M, Kim SK, Kang HT, Oh SS, Koh SB. Relationship between shift work and liver enzymes: a cross-sectional study based on the Korea National Health and Examination Survey (2007-2015). Ann Occup Environ Med 2019; 31:e15. [PMID: 31583106 DOI: 10.35371/aoem.2019.31.e15] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 07/15/2019] [Indexed: 01/12/2023] Open
Abstract
Background Shift work has well-known adverse effects on health. However, few studies have investigated the relationship between shift work and hepatic disorders. This study aimed to evaluate the association between shift work and abnormal level of liver enzymes. Methods The aggregated data from the 2007–2009, 2010–2012, and 2013–2015 cycles of the Korea National Health and Nutrition Examination Survey was used for this study. The χ2 test and multiple logistic regression analysis were used to assess relationship between shift work and abnormal level of liver enzymes stratified by gender. Results The odds ratio (OR) of abnormal serum level of alanine aminotransferase (abnormal ALT) in female shift workers was higher with 1.31 (95% confidence interval: 1.00–1.71) compared with day workers after adjusting for covariates. After dividing into subgroups of the shift work pattern, the ORs of abnormal liver enzymes for each pattern compared with day work were not significantly higher. Conclusions This study provides limited support for the hypothesis that shift work is related to liver enzyme abnormalities, but offers some evidence in favor of the idea that shift work affects female workers more than males on abnormal ALT. Further studies are needed to define the relationship between shift work and abnormal liver enzymes to be carried out as well as the gender difference in the association.
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75
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Mei JS, Li Q, Liao XF, Sun GH, Ding X, Wang ZX, Ouyang YL, Jiang T, Li CB. Aspartate aminotransferase to platelet ratio index value in predicting liver fibrosis in patients with hepatitis B virus infection. J BIOL REG HOMEOS AG 2019; 33:849-856. [PMID: 31190511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- J S Mei
- Cardiothoracic Surgery, The Second Clinical Medical College of Yangtze University, Jingzhou, China
| | - Q Li
- Department of Clinical Laboratory, The Second Clinical Medical College of Yangtze University, Jingzhou, China
| | - X F Liao
- Department of Clinical Laboratory, The Second Clinical Medical College of Yangtze University, Jingzhou, China
| | - G H Sun
- Department of Clinical Laboratory, The Second Clinical Medical College of Yangtze University, Jingzhou, China
| | - X Ding
- Department of Clinical Laboratory, The Second Clinical Medical College of Yangtze University, Jingzhou, China
| | - Z X Wang
- Department of Clinical Laboratory, The Second Clinical Medical College of Yangtze University, Jingzhou, China
| | - Y L Ouyang
- Department of Clinical Laboratory, The Second Clinical Medical College of Yangtze University, Jingzhou, China
| | - T Jiang
- Department of Clinical Laboratory, The Second Clinical Medical College of Yangtze University, Jingzhou, China
| | - C B Li
- Department of Clinical Laboratory, The Second Clinical Medical College of Yangtze University, Jingzhou, China
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Kılıç M, Kasapkara ÇS, Kılavuz S, Mungan NÖ, Biberoğlu G. A possible biomarker of neurocytolysis in infantile gangliosidoses: aspartate transaminase. Metab Brain Dis 2019; 34:495-503. [PMID: 30712135 DOI: 10.1007/s11011-019-0391-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 01/27/2019] [Indexed: 10/27/2022]
Abstract
Gangliosidoses (GM1 and GM2 gangliosidosis) are rare, autosomal recessive progressive neurodegenerative lysosomal storage disorders caused by defects in the degradation of glycosphingolipids. We aimed to investigate clinical, biochemical and molecular genetic spectrum of Turkish patients with infantile gangliosidoses and examined the potential role of serum aspartate transaminase levels as a biomarker. We confirmed the diagnosis of GM1 and GM2 gangliosidosis based on clinical findings with specific enzyme and/or molecular analyses. We retrospectively reviewed serum aspartate transaminase levels of patients with other biochemical parameters. Serum aspartate transaminase level was elevated in all GM1 and GM2 gangliosidosis patients in whom the test was performed, along with normal alanine transaminase. Aspartate transaminase can be a biochemical diagnostic clue for infantile gangliosidoses. It might be a simple but important biomarker for diagnosis, follow up, prognosis and monitoring of the response for the future therapies in these patients.
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Affiliation(s)
- Mustafa Kılıç
- Metabolism Unit, Sami Ulus Children Hospital, Babur cad. No: 44, 06080 Altındağ, Ankara, Turkey.
| | - Çiğdem Seher Kasapkara
- Metabolism Unit, Sami Ulus Children Hospital, Babur cad. No: 44, 06080 Altındağ, Ankara, Turkey
| | - Sebile Kılavuz
- Department of Pediatrics, Metabolism Unit, Cukurova University, Adana, Turkey
| | | | - Gürsel Biberoğlu
- Department of Pediatrics, Metabolism Unit, Gazi University, Ankara, Turkey
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77
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Tate RD, Cullis BR, Smith SDA, Kelaher BP, Brand CP, Gallen CR, Mandelman JW, Butcher PA. The acute physiological status of white sharks ( Carcharodon carcharias) exhibits minimal variation after capture on SMART drumlines. Conserv Physiol 2019; 7:coz042. [PMID: 31428427 PMCID: PMC6692849 DOI: 10.1093/conphys/coz042] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 05/16/2019] [Accepted: 06/10/2019] [Indexed: 05/21/2023]
Abstract
Drumlines incorporating SMART (Shark-Management-Alert-in-Real-Time) technology are a new tool used in several bather protection programmes globally. In New South Wales (NSW), Australia, the white shark (Carcharodon carcharias) is a target species for SMART drumlines because they are often involved in attacks on humans. To understand white shark sensitivity to capture and to establish protocols around acceptable timeframes for responding to alerts, 47 juvenile and subadult white sharks were caught on SMART drumlines at five locations off the east coast of Australia. There was no at-vessel mortality during the sampling period. After capture, blood was sampled from each shark to assess its acute physiological status. Of the 18 metabolites investigated, only lactate and aspartate aminotransferase exhibited significant positive relationships with the capture duration on SMART drumlines. These results indicate that the capture process is relatively benign and that the current response times used here are appropriate to minimize long-term negative impacts on released white sharks. Where white sharks are likely to interact negatively with beachgoers, SMART drumlines can therefore be a useful addition to bather protection programmes that also aim to minimize harm to captured animals. Other shark species captured on SMART drumlines should also be investigated to gain broader understanding of potential physiological consequences of using this new technology.
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Affiliation(s)
- R D Tate
- National Marine Science Centre, Southern Cross University, PO Box 4321, Coffs Harbour, New South Wales, Australia
- Corresponding author: National Marine Science Centre, Southern Cross University, PO Box 4321, Coffs Harbour, New South Wales 2450, Australia.
| | - B R Cullis
- National Institute of Applied Statistics Research Australia, Faculty of Engineering and Information Sciences, University of Wollongong, Wollongong, New South Wales, Australia
| | - S D A Smith
- National Marine Science Centre, Southern Cross University, PO Box 4321, Coffs Harbour, New South Wales, Australia
| | - B P Kelaher
- National Marine Science Centre, Southern Cross University, PO Box 4321, Coffs Harbour, New South Wales, Australia
| | - C P Brand
- NSW Department of Primary Industries, National Marine Science Centre PO Box 4321, Coffs Harbour, New South Wales, Australia
| | - C R Gallen
- NSW Department of Primary Industries, National Marine Science Centre PO Box 4321, Coffs Harbour, New South Wales, Australia
| | - J W Mandelman
- Anderson Cabot Center for Ocean Life, New England Aquarium, 1 Central Wharf, Boston, MA, USA
| | - P A Butcher
- National Marine Science Centre, Southern Cross University, PO Box 4321, Coffs Harbour, New South Wales, Australia
- NSW Department of Primary Industries, National Marine Science Centre PO Box 4321, Coffs Harbour, New South Wales, Australia
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Liu Y, Zhao P, Cheng M, Yu L, Cheng Z, Fan L, Chen C. AST to ALT ratio and arterial stiffness in non-fatty liver Japanese population:a secondary analysis based on a cross-sectional study. Lipids Health Dis 2018; 17:275. [PMID: 30509277 DOI: 10.1186/s12944-018-0920-4] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 11/20/2018] [Indexed: 12/29/2022] Open
Abstract
Background Previous studies have revealed that triglyceride to high-density lipoprotein cholesterol (HDL-C) ratio (henceforth TG/HDL-C) is one of the major risk factors for cardiovascular disease, insulin resistance and metabolism syndrome. However, there are fewer investigations of the correlations between the aspartate aminotransferase (AST) to alanine aminotransferase (ALT) ratio and brachial ankle pulse wave velocity (baPWV). This study was undertaken to investigate the relationship between the AST to ALT ratio and brachial-ankle pulse wave velocity (baPWV) in a Japanese population. Methods The present study was a cross-sectional study. A total of 646 Japanese men and women without fatty liver, aged 24—84 years old, received a health medical check-up programme including the results from baPWV inspection and various standardized questionnaires in a health examination centre in Japan. Main outcome measures included AST/ALT ratio, baPWV, fatty liver and postmenopausal status. Abdominal ultrasonography was used to diagnose fatty liver. A postmenopausal state was defined as beginning 1 year following the cessation of menses. Results After adjusting for potential confounders (age, sex, BMI, SBP, DBP, AST, ALT, GGT, uric acid, fasting glucose, TC, LDL, eGFR, smoking and exercise statuses, fatty liver, alcohol consumption and ABI), a non-linear relationship was detected between AST/ALT and baPWV, which had an inflection point of 5.6. The effect sizes and the confidence intervals on the left and right sides of the inflection point were 12.7 (1.9 to 23.5) and − 16.7 (− 36.8 to 3.3), respectively. Subgroup analysis in participants with excessive alcohol consumption (more than 280 g/week) showed that AST/ALT had a negative correlation with baPWV (β = − 30.7, 95%CI (− 53.1, − 8.4)), and the P value for the interaction was less than 0.05. Conclusion The relationship between AST/ALT and baPWV is non-linear. AST/ALT was positively correlated with baPWV when AST/ALT was less than 5.6. In addition, the trend was the opposite in subjects who consumed excessive amounts of alcohol.
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Samayanpaulraj V, Velu V, Uthandakalaipandiyan R. Determination of lethal dose of Aeromonas hydrophila Ah17 strain in snake head fish Channa striata. Microb Pathog 2018; 127:7-11. [PMID: 30496835 DOI: 10.1016/j.micpath.2018.11.035] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 11/13/2018] [Accepted: 11/26/2018] [Indexed: 11/16/2022]
Abstract
Aeromonas hydrophila is a major bacterial fish pathogen which causes economic losses in the aquaculture. The study determined the Letha Dose (LD50-96h) of A. hydrophila Ah17 strain (isolated from EUS infected Channa striata) in C. striata. C. striata were challenged with three different concentration of A. hydrophila Ah17 strain 1.0 × 107, 1.0 × 108, 1.0 × 109 CFU/mL. The LD50-96h values were found to be 4.1 × 108 CFU/mL. Percentage of mortality was observed as 10%, 40% and 70% in 1.0 × 107, 1.0 × 108 and 1.0 × 109 CFU/mL respectively in challenged fish. Microbial load was calculated on muscle, kidney, liver and spleen with highest load was observed in muscle and lowest in kidney. Level of liver enzymes such as Aspartate aminotransferase (AST), Alanine Aminotransferase (ALT), and Alkaline Phosphatase (ALP) were increased compared to control fish. Level of mRNA expression of antioxidant genes such as Catalase (cat), Manganese Superoxide Dismutase (MnSOD), Glutathione Peroxidase (GPx) were high in liver tissue of all treated groups than control. Clinical signs were observed after intraperitoneal treatment of Ah17 in C. striata. Clinical signs such as lesions on the site of injection, imbalanced state, changes in the movement of pectoral fins, depigmentation on the tail of caudal fin and irregular lesions on the muscle region were observed. Thus the study concluded that, the LD50-96h value of A. hydrophila Ah17 strain was 4.1 × 108 CFU/mL and exhibited potential pathogenic effect upon experimental infection in snakehead murrel C. striata.
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Affiliation(s)
- Vignesh Samayanpaulraj
- Department of Molecular Biology, School of Biological Sciences, Madurai Kamaraj University, 625 021, India
| | - Vijay Velu
- Department of Molecular Biology, School of Biological Sciences, Madurai Kamaraj University, 625 021, India
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80
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Michiko N, Setyawan B, Sunaba-Mitsumasu S. Enzymatic reaction sites on a plane formed with four exon-junctions. J Theor Biol 2018; 457:51-56. [PMID: 30102888 DOI: 10.1016/j.jtbi.2018.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 08/02/2018] [Accepted: 08/06/2018] [Indexed: 11/19/2022]
Abstract
Understanding the interaction of an enzyme with its substrate is important for the research of protein function. However, there is still no satisfactory explanation for protein folding, in spite of the continuous efforts by many excellent researchers. We present a novel approach for analysing enzyme-substrate complexes. Previously, we showed how four exon-junctions, in a domain of enzyme and carrier protein structures, form a plane around their respective ligands. Here, we report the formation of two planes by two combinations of four exon-junctions within the large enzyme, aspartate aminotransferase. Almost all the ligand atoms are located within one plane, while the other plane contains most linker-residue atoms of the coenzyme, suggesting that the former and latter planes serve as the enzyme reaction and support areas, respectively. Simulation results revealed that two-plane formation is possible in the enzyme with four random positions; however, the relationship between the coenzyme ligating substrate and the plane is significant and is biologically important. We describe the formation of such planes around the ligand, including the ligating residue for the coenzyme with no substrate.
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Affiliation(s)
- Nosaka Michiko
- Material and Biological Engineering, National Institute of Technology, Sasebo College, Sasebo, Japan.
| | - Budi Setyawan
- Material and Biological Engineering, National Institute of Technology, Sasebo College, Sasebo, Japan
| | - Syunya Sunaba-Mitsumasu
- Material and Biological Engineering, National Institute of Technology, Sasebo College, Sasebo, Japan
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81
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Mazidi M, Katsiki N, Mikhailidis DP, Banach M. Ideal cardiovascular health associated with fatty liver: Results from a multi-ethnic survey. Atherosclerosis 2018; 284:129-135. [PMID: 30878840 DOI: 10.1016/j.atherosclerosis.2018.11.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Revised: 10/30/2018] [Accepted: 11/07/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Little is known about the role of liver enzymes as predictors of non-liver-related morbidity and mortality. The ideal cardiovascular health (CVH) score proposed by the American Heart Association (AHA) can be used to predict mortality and morbidity. We investigated the association of the CVH score with liver enzymes and the risk of non-alcoholic fatty liver disease (NAFLD) among US adults. METHODS By using the National Health and Nutrition Examination Survey database (cross-sectional), the CVH score was calculated as meeting ideal levels of the following components: 4 behaviors (smoking, body mass index, physical activity and diet adherence) and 3 factors (total cholesterol, blood pressure and fasting glucose). RESULTS Individuals with a higher CVH score ("better CVH") had a more favorable profile of liver biomarkers. Adjusted (for age, gender, race, poverty to income ratio, education, marital status and alcohol intake) linear regression indicated significant and negative associations between liver biomarkers and CVH score: (β = -0.069, p < 0.001) for alanine aminotransferase, (β = -0.095, p < 0.001), aspartate aminotransferase, (β = -0.067, p < 0.001), alkaline phosphatase and (β = -0.125, p < 0.001) and fatty liver index. In the logistic regression, with the same confounders, individuals with a higher CVH score had 12% less likelihood of NAFLD compared with those with a lower score. Furthermore, each CVH metric separately was inversely linked to the risk of NAFLD. CONCLUSIONS For the first time among US adults, our findings shed light on the role CVH on liver biomarkers.
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Affiliation(s)
- Mohsen Mazidi
- Key State Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Chaoyang, China; Institute of Genetics and Developmental Biology, International College, University of Chinese Academy of Science (IC-UCAS), Chaoyang, China.
| | - Niki Katsiki
- Second Propedeutic Department of Internal Medicine, Medical School, Aristotle University of Thessaloniki, Hippokration Hospital, Thessaloniki, Greece
| | - Dimitri P Mikhailidis
- Department of Clinical Biochemistry, Royal Free Campus, University College London Medical School, University College London (UCL), London, UK
| | - Maciej Banach
- Department of Hypertension, Chair of Nephrology and Hypertension, Medical University of Lodz, Poland; Polish Mother's Memorial Hospital Research Institute (PMMHRI), Lodz, Poland; Cardiovascular Research Centre, University of Zielona Gora, Zielona Gora, Poland
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Mazidi M, Katsiki N, Banach M. A higher flavonoid intake is associated with less likelihood of nonalcoholic fatty liver disease: results from a multiethnic study. J Nutr Biochem 2018; 65:66-71. [PMID: 30623852 DOI: 10.1016/j.jnutbio.2018.10.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 09/23/2018] [Accepted: 10/03/2018] [Indexed: 02/07/2023]
Abstract
Limited information exists on the impact of flavonoid intake on nonalcoholic fatty liver disease (NAFLD). We evaluated the link between flavonoid intake, liver tests and risk of NAFLD in a randomly selected sample of US adults (from the National Health and Nutrition Examination Survey, NHANES, 2005-2010). Of the 17,685 participants, 46.9% were men and 45.4% had NAFLD. NAFLD patients had a significantly lower mean flavonoid intake than healthy individuals (111.3±3.6 vs. 201.3±2.3 mg/d, respectively; P<.001). Fatty liver index (FLI) and serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) were significantly higher in the first tertile (T1) of flavonoid intake compared with the highest tertile (T3: with the highest flavonoid intake) (FLI: 67.1 vs. 36.2, AST: 31.2 VS 26.8 U/L and, ALT: 34.2 vs. 24.2 U/L, respectively; P<.001 for all comparisons). Adjusted linear regression displayed significant and negative associations between FLI, AST, ALT and flavonoid intake (P<.001 for all comparisons). Multivariable logistic regression showed that the risk for NAFLD significantly decreased as flavonoid intake tertiles increased in a stepwise manner (odds ratio: 0.81, 95% confidence interval: 0.78-0.86). Moderation analysis revealed that C-reactive protein (CRP) strongly modulated the impact of flavonoid intake on FLI; participants with higher CRP levels benefited less from flavonoid intake compared with those with lower CRP concentrations. In conclusions, our results suggest a reverse significant association between flavonoid consumption, liver tests and the risk for NAFLD. Furthermore, CRP was shown to essentially moderate this relationship. These findings support recommendations for consumption of flavonoid-rich foods to prevent cardiometabolic diseases.
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Affiliation(s)
- Mohsen Mazidi
- Department of Biology and Biological Engineering, Food and Nutrition Science, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden.
| | - Niki Katsiki
- Second Propedeutic Department of Internal Medicine, Medical School, Aristotle University of Thessaloniki, Hippokration Hospital, Thessaloniki, Greece
| | - Maciej Banach
- Department of Hypertension, Chair of Nephrology and Hypertension, Medical University of Lodz, Poland; Polish Mother's Memorial Hospital Research Institute (PMMHRI), Lodz, Poland; Cardiovascular Research Centre, University of Zielona Gora, Zielona Gora, Poland
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Sattar N, Fitchett D, Hantel S, George JT, Zinman B. Empagliflozin is associated with improvements in liver enzymes potentially consistent with reductions in liver fat: results from randomised trials including the EMPA-REG OUTCOME® trial. Diabetologia 2018; 61:2155-2163. [PMID: 30066148 PMCID: PMC6133166 DOI: 10.1007/s00125-018-4702-3] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 07/04/2018] [Indexed: 02/07/2023]
Abstract
AIMS/HYPOTHESIS In addition to beneficial effects on glycaemia and cardiovascular death, empagliflozin improves adiposity indices. We investigated the effect of empagliflozin on aminotransferases (correlates of liver fat) in individuals with type 2 diabetes. METHODS Changes from baseline alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were assessed in the EMPA-REG OUTCOME® trial (n = 7020), pooled data from four 24-week placebo-controlled trials (n = 2477) and a trial of empagliflozin vs glimepiride over 104 weeks (n = 1545). Analyses were performed using data from all participants and by tertiles of baseline aminotransferases. RESULTS In the EMPA-REG OUTCOME® trial, mean ± SE changes from baseline ALT at week 28 were -2.96 ± 0.18 and -0.73 ± 0.25 U/l with empagliflozin and placebo, respectively (adjusted mean difference: -2.22 [95% CI -2.83, -1.62]; p < 0.0001). Reductions in ALT were greatest in the highest ALT tertile (placebo-adjusted mean difference at week 28: -4.36 U/l [95% CI -5.51, -3.21]; p < 0.0001). The adjusted mean difference in change in ALT was -3.15 U/l (95% CI -4.11, -2.18) with empagliflozin vs placebo at week 24 in pooled 24-week data, and -4.88 U/l (95% CI -6.68, -3.09) with empagliflozin vs glimepiride at week 28. ALT reductions were largely independent of changes in weight or HbA1c. AST changes showed similar patterns to ALT, but the reductions were considerably lower. CONCLUSIONS/INTERPRETATION These highly consistent results suggest that empagliflozin reduces aminotransferases in individuals with type 2 diabetes, in a pattern (reductions in ALT>AST) that is potentially consistent with a reduction in liver fat, especially when ALT levels are high.
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Affiliation(s)
- Naveed Sattar
- British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow, G12 8TA, UK.
| | - David Fitchett
- St Michael's Hospital, Division of Cardiology, University of Toronto, Toronto, ON, Canada
| | - Stefan Hantel
- Boehringer Ingelheim International GmbH, Ingelheim, Germany
| | | | - Bernard Zinman
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada
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84
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Fukuyama T, Yamauchi S, Amagasa S, Hattori Y, Sasaki T, Nakajima H, Takei Y, Okuno J, Misawa Y, Fueki N, Kitamura M, Matsui H, Inaba Y, Hirabayashi S. Early prognostic factors for acute encephalopathy with reduced subcortical diffusion. Brain Dev 2018; 40:707-713. [PMID: 29716832 DOI: 10.1016/j.braindev.2018.04.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 04/15/2018] [Accepted: 04/16/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The aim of this study was to determine the prognostic factors for acute encephalopathy with reduced diffusion (AED) during the acute phase through retrospective case evaluation. METHODS The participants included 23 patients with AED. The diagnosis of AED was based on their clinical course and radiological findings. We divided the patients into severe and non-severe groups based on the neurodevelopmental outcome. The severe group included seven patients (median age, 21 months; range, 6-87 months) and the non-severe group included 16 patients (19 months, 9-58 months). Clinical symptoms, laboratory data and electroencephalogram (EEG) findings within 48 h from the initial seizure onset were compared between the two groups to identify neurological outcome predictors. RESULTS The incidence of coma 12-24 h after onset, serum creatinine (Cr) levels within 2 h after onset, maximum aspartate aminotransferase (AST) levels within 24 h after onset, and the rate of electrographic seizures in EEG were significantly higher in the severe group (Coma, 80%; Cr, 0.40 mg/dl, 0.37-0.73; AST, 363 IU/L, 104-662; electrographic seizures, 80%) than the non-severe group (Coma, 0%; Cr, 0.29 mg/dL, 0.19-0.45; AST, 58.5 IU/L, 30-386; electrographic seizures, 0%). CONCLUSIONS Coma 12-24 h after onset, elevation of Cr levels within 2 h after onset, elevation of AST levels within 24 h after onset, and non-convulsive status epileptics (NCSE) in comatose patients were early predictors of severe AED. Patients in a coma after a febrile seizure should be checked for NCSE signs in EEG to terminate NCSE without delay.
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Affiliation(s)
| | | | - Shunsuke Amagasa
- Pediatric Intensive Care Unit, Nagano Children's Hospital, Japan
| | - Yuka Hattori
- Division of Neurology, Nagano Children's Hospital, Japan
| | - Taku Sasaki
- Division of Neurology, Nagano Children's Hospital, Japan
| | | | - Yuko Takei
- Division of Neurology, Nagano Children's Hospital, Japan
| | - Jiu Okuno
- Division of Neurology, Nagano Children's Hospital, Japan
| | - Yuka Misawa
- Division of Rehabilitation, Nagano Children's Hospital, Japan
| | - Noboru Fueki
- Division of Rehabilitation, Nagano Children's Hospital, Japan
| | | | - Hikoro Matsui
- Pediatric Intensive Care Unit, Nagano Children's Hospital, Japan
| | - Yuji Inaba
- Division of Neurology, Nagano Children's Hospital, Japan
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85
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Ghiasi M, Binaii M, Naghavi A, Rostami HK, Nori H, Amerizadeh A. Inclusion of Pediococcus acidilactici as probiotic candidate in diets for beluga (Huso huso) modifies biochemical parameters and improves immune functions. Fish Physiol Biochem 2018; 44:1099-1107. [PMID: 29637381 DOI: 10.1007/s10695-018-0497-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 03/27/2018] [Indexed: 06/08/2023]
Abstract
Administration of probiotic candidates in fish has generally been shown as a useful strategy to improve growth performance, survival, digestive enzyme activity, and gut microbiota. Unfortunately, the sero-immunological responses of different fish to different probiotic candidates are poorly understood. The present study assessed the effect of Pediococcus acidilactici as a probiotic on the biochemical and immunological parameters of beluga. Fish (248.32 ± 10.21 g) were fed a control diet (without P. acidilactici( and three different doses of P. acidilactici-supplemented diets (107, 108, and 109 CFUg-1 diets) for 8 weeks. On week 8, blood and serum were sampled. Dose-dependent increase of immunological parameters (respiratory burst activity, lysozyme content, serum antibacterial activity, and total immunoglobulin) and biochemical parameters (total protein and albumin levels) was observed. However, alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were significantly increased in the juvenile beluga fed by 109 CFUg-1 P. acidilactici-supplemented diet compared to the other groups. Based on the results of this evaluation, it is reasonable to conclude that the inclusion of P. acidilactici as probiotic in diets for juvenile beluga improves the sero-immunological parameters of the fish and should be considered by farmers as a strategy to improve fish health.
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Affiliation(s)
- Maryam Ghiasi
- Caspian Sea Ecology Research Center, Iranian Fisheries Research Organization, Agriculture Research Education and Extension Organization, P.O. Box: 961, Farah-Abad, Sari, Iran.
| | - Mohammad Binaii
- Caspian Sea Ecology Research Center, Iranian Fisheries Research Organization, Agriculture Research Education and Extension Organization, P.O. Box: 961, Farah-Abad, Sari, Iran
| | | | - Hosseinali Khoshbavar Rostami
- Research Center of Inland Waters, Iranian Fisheries Research Organization, Agriculture Research Education and Extension Organization, Gorgan, Iran
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86
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Pilarczyk K, Carstens H, Heckmann J, Canbay A, Koch A, Pizanis N, Jakob H, Kamler M. The aspartate transaminase/alanine transaminase (DeRitis) ratio predicts mid-term mortality and renal and respiratory dysfunction after left ventricular assist device implantation. Eur J Cardiothorac Surg 2018; 52:781-788. [PMID: 29156019 DOI: 10.1093/ejcts/ezx247] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 04/30/2017] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES Preoperative liver dysfunction is a well-known risk factor for adverse events after major surgery. However, there is only little data regarding the precise role of the Model of End-Stage Liver Disease (MELD) score and the De Ritis ratio (DRR, alanine transaminase/aspartate aminotransferase) as a predictor for outcome after left ventricular assist device (LVAD) implantation. METHODS A retrospective analysis of all patients undergoing LVAD implantation at our institution between January 2012 and August 2014 was performed. The primary outcome was survival at 180 days after surgery. RESULTS During the observation period, 63 patients underwent LVAD implantation (mean age 59.9 ± 8.3 years, 50% male). Mean preoperative ejection fraction was 16.3 ± 7.7, 13 patients required preoperative renal replacement therapy and 9 patients were on extracorporeal life support. Mean Interagency Registry for Mechanically Assisted Circulatory Support level was 2.8 ± 1.3, mean preoperative MELD was 12.7 ± 7.2, mean preoperative DRR was 2.01 ± 4.4. Aspartate aminotransferase (102 ± 220.8 vs 57.8 ± 123.4 U/l, P = 0.041), MELD score (16.1 ± 8.8 vs 11.4 ± 6.1, P = 0.017) and DRR (4.2 ± 7.8 vs 1.1 ± 1.1, P = 0.001) were significantly higher in non-survivors than in survivors after 180 days. Using logistic regression analyses, a DRR >1.37 was an independent predictor for 30-day mortality [odds ratio (OR) 4.5] and 180-day mortality (OR 4.1). In addition, the DRR was associated with postoperative acute kidney injury with need for renal replacement therapy (OR 4.2) and prolonged postoperative ventilation time >72 h (OR 3.8). Using receiver operator characteristics analyses, DRR showed a sensitivity of 0.80 and a specificity of 0.81 (area under the curve 0.834, cut-off 1.37) for 180-day mortality. CONCLUSIONS The DRR is predictive of early and mid-term mortality as well as relevant morbidities in patients undergoing LVAD implantation. Therefore, the DRR should be considered within the preoperative risk stratification and patient selection for LVAD implantation.
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Affiliation(s)
- Kevin Pilarczyk
- Department of Thoracic and Cardiovascular Surgery, West German Heart and Vascular Center Essen, University Hospital Essen, Essen, Germany.,Department of Critical Care Medicine, imland Klinik Rendsburg, Rendsburg, Germany
| | - Henning Carstens
- Department of Thoracic and Cardiovascular Surgery, West German Heart and Vascular Center Essen, University Hospital Essen, Essen, Germany
| | - Jens Heckmann
- Department of Thoracic and Cardiovascular Surgery, West German Heart and Vascular Center Essen, University Hospital Essen, Essen, Germany
| | - Ali Canbay
- Department of Gastroenterology and Hepatology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Achim Koch
- Department of Thoracic and Cardiovascular Surgery, West German Heart and Vascular Center Essen, University Hospital Essen, Essen, Germany
| | - Nikolaus Pizanis
- Department of Thoracic and Cardiovascular Surgery, West German Heart and Vascular Center Essen, University Hospital Essen, Essen, Germany
| | - Heinz Jakob
- Department of Thoracic and Cardiovascular Surgery, West German Heart and Vascular Center Essen, University Hospital Essen, Essen, Germany
| | - Markus Kamler
- Department of Thoracic and Cardiovascular Surgery, West German Heart and Vascular Center Essen, University Hospital Essen, Essen, Germany
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87
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Di Cerbo A, Iannitti T, Guidetti G, Centenaro S, Canello S, Cocco R. A nutraceutical diet based on Lespedeza spp., Vaccinium macrocarpon and Taraxacum officinale improves spontaneous feline chronic kidney disease. Physiol Rep 2018; 6:e13737. [PMID: 29906338 PMCID: PMC6003637 DOI: 10.14814/phy2.13737] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 12/17/2022] Open
Abstract
Chronic kidney disease is characterized by structural and/or functional impairment of one or both kidneys persisting for more than 3 months. In cats, chronic kidney disease can frequently occur in animals aged over 9 years with an incidence of approximately 10%. Thirty-four client-owned, neutered cats, suffering from stage II-III chronic kidney disease and diagnosed according to the International Renal Interest Society guidelines were randomly assigned to receive either a control diet (n = 17) or a nutraceutical diet (ND; n = 17) for 90 days. Both diets were commercialized for management of CKD symptoms. The diets were identical except that the ND contained tablets that consisted of 60-80% hydrolysed proteins, 20-40% minerals and active substances, that are, Lespedeza spp. 0.0588%, Vaccinium macrocarpom 0.0371%, and Taraxacum officinale 0.0231%. No adverse effects were reported during this study. Both diets resulted in an improvement in CKD symptoms. After a 90-day evaluation, creatinine, blood urea nitrogen, total proteins, and aspartate aminotransferase significantly decreased in cats that received the ND. A significant decrease was also observed in urine turbidity score, color score, and total proteins in cats that received the ND. We have found that a ND based on Lespedeza spp., Vaccinium macrocarpon, and Taraxacum officinale improves key indicators of renal failure in cats affected by chronic kidney disease.
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Affiliation(s)
- Alessandro Di Cerbo
- Department of Life SciencesUniversity of Modena and Reggio EmiliaModenaItaly
- Department of Medical, Oral and Biotechnological SciencesDental SchoolUniversity G. d' Annunzio of Chieti‐PescaraChietiItaly
| | | | | | - Sara Centenaro
- Research and Development DepartmentSANYpet S.p.aPaduaItaly
| | - Sergio Canello
- Research and Development DepartmentForza10 USA CorpOrlandoFlorida
| | - Raffaella Cocco
- Department of Pathology and Veterinary ClinicFaculty of Veterinary MedicineUniversity of SassariSassariItaly
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88
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Barton JC, Barton JC, Adams PC. Clinical and Laboratory Associations with Persistent Hyperferritinemia in 373 Black Hemochromatosis and Iron Overload Screening Study Participants. Ann Hepatol 2018; 16:802-811. [PMID: 28809726 DOI: 10.5604/01.3001.0010.2815] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND 373 black participants had elevated screening and post-screening serum ferritin (SF) (> 300 μg/L men; > 200 μg/L women). MATERIAL AND METHODS We retrospectively studied SF and post-screening age; sex; body mass index; transferrin saturation (TS); ALT; AST; GGT; elevated C-reactive protein; ß-thalassemia; neutrophils; lymphocytes; monocytes; platelets; metacarpophalangeal joint hypertrophy; hepatomegaly; splenomegaly; diabetes; HFE H63D positivity; iron/alcohol intakes; and blood/erythrocyte transfusion units. Liver disease was defined as elevated ALT or AST. We computed correlations of SF and TS with: age; body mass index; ALT; AST; GGT; C-reactive protein; blood cell counts; and iron/alcohol. We compared participants with SF > 1,000 and ≤ 1,000 μg/L and performed regressions on SF. RESULTS There were 237 men (63.5%). Mean age was 55 ± 13 (SD) y. 143 participants had liver disease (62 hepatitis B or C). There were significant correlations of SF: TS, ALT, AST, GGT, and monocytes (positive); and SF and TS with platelets (negative). 22 participants with SF > 1,000 μg/L had significantly higher median TS, ALT, and AST, and prevalences of anemia and transfusion > 10 units; and lower median platelets. Regression on SF revealed significant associations: TS; male sex; age; GGT; transfusion units (positive); and splenomegaly (negative) (p < 0.0001, 0.0016, 0.0281, 0.0025, 0.0001, and 0.0096, respectively). Five men with SF > 1,000 μg/L and elevated TS had presumed primary iron overload (hemochromatosis). Four participants had transfusion iron overload. CONCLUSION Persistent hyperferritinemia in 373 black adults was associated with male sex, age, TS, GGT, and transfusion. 2.4% had primary iron overload (hemochromatosis) or transfusion iron overload.
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Affiliation(s)
- James C Barton
- Southern Iron Disorders Center, Birmingham, Birmingham, Alabama, USA
| | - J Clayborn Barton
- Southern Iron Disorders Center, Birmingham, Birmingham, Alabama, USA
| | - Paul C Adams
- University of Western Ontario, London, Ontario, Canada Department of Medicine
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89
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Zhao H, Fang Y, Wang X, Zhao L, Wang J, Li Y. Increasing L-threonine production in Escherichia coli by engineering the glyoxylate shunt and the L-threonine biosynthesis pathway. Appl Microbiol Biotechnol 2018; 102:5505-5518. [PMID: 29713792 DOI: 10.1007/s00253-018-9024-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Revised: 03/20/2018] [Accepted: 04/13/2018] [Indexed: 11/29/2022]
Abstract
L-threonine is an important amino acid that can be added in food, medicine, or feed. Here, the influence of glyoxylate shunt on an L-threonine producing strain Escherichia coli TWF001 has been studied. The gene iclR was deleted, and the native promoter of the aceBA operon was replaced by the trc promoter in the chromosome of TWF001, the resulting strainTWF004 could produce 0.39 g L-threonine from1 g glucose after 36-h flask cultivation. Further replacing the native promoter of aspC by the trc promoter in the chromosome of TWF004 resulted in the strain TWF006. TWF006 could produce 0.42 g L-threonine from 1 g glucose after 36-h flask cultivation. Three key genes in the biosynthetic pathway of L-threonine, thrA * (a mutated thrA), thrB, and thrC were overexpressed in TWF006, resulting the strain TWF006/pFW01-thrA * BC. TWF006/pFW01-thrA * BC could produce 0.49 g L-threonine from 1 g glucose after 36-h flask cultivation. Next, the genes asd, rhtA, rhtC, or thrE were inserted into the plasmid TWF006/pFW01-thrA * BC, and TWF006 was transformed with these plasmids, resulting the strains TWF006/pFW01-thrA * BC-asd, TWF006/pFW01-thrA * BC-rhtA, TWF006/pFW01-thrA * BC-rhtC, and TWF006/pFW01-thrA * BC-thrE, respectively. These four strains could produce more L-threonine than the control strain, and the highest yield was produced by TWF006/pFW01-thrA * BC-asd; after 36-h flask cultivation, TWF006/pFW01-thrA * BC-asd could produce 15.85 g/l L-threonine, i.e., 0.53 g L-threonine per 1 g glucose, which is a 70% increase relative to the control strain TWF001. The results suggested that the combined engineering of glyoxylate shunt and L-threonine biosynthesis pathway could significantly increase the L-threonine production in E. coli.
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Affiliation(s)
- Hui Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China.,Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Yu Fang
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China.,Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Xiaoyuan Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China. .,Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China. .,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China.
| | - Lei Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China
| | - Jianli Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China
| | - Ye Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, China
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Dong H, Xu C, Zhou W, Liao Y, Cao J, Li Z, Hu B. The combination of 5 serum markers compared to FibroScan to predict significant liver fibrosis in patients with chronic hepatitis B virus. Clin Chim Acta 2018; 483:145-150. [PMID: 29709450 DOI: 10.1016/j.cca.2018.04.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/24/2018] [Accepted: 04/26/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND We evaluated the performance of serum hyaluronan (HA), procollagen type III N-terminal peptide (PIIINP), type IV collagen (IVC), laminin (LN), alanine aminotransferase (ALT), and aspartate aminotransferase (AST), compared to transient elastography (FibroScan) in predicting significant liver fibrosis. METHODS We therefore determined 4 serum fibrosis markers, FibroScan and liver biopsy in 70 consecutive adult patients with chronic hepatitis B. According to a modified Scheuer scoring system, significant fibrosis was defined as fibrosis stage ≥S2. We compared serum fibrosis markers to histological staging and FibroScan results using Spearman correlation analysis and area under receiver operating characteristic (ROC) curves (AUROCs). RESULTS Of the 212 patients who had the results of FibroScans and four serum fibrosis markers for HBV, 70 had concurrent liver biopsy. Significant liver fibrosis was found in 24/70 patients. The serum levels of HA, PIIINP, IVC, LN, ALT, AST was all positively correlated with fibrosis stage of Liver biopsy. The coefficients with stages were respectively 0.468, 0.392, 0.538, 0.213, 0.350, 0.375. There was a significant difference between mild fibrosis (<S2) and significant fibrosis (≥S2), excluding LN, in the levels of these 5 serum makers (P < .05). AUROC for FibroScans and HA, PIIINP, IVC, LN, ALT, AST to correctly allocate patients to histological fibrosis stage ≥ S2 was 0.866, 0.784, 0.738, 0.827, 0.630, 0.713 and 0.728 respectively. Since LN shows the worst performance of the others. We decided to check the performance of the combination of HA, PIIINP, CIV, ALT, AST, excluding LN, to distinguish fibrosis stages. The index of the histological fibrosis stage ≥ S2, combining the 5 serum markers, significantly improved diagnostic performance (AUROC = 0.861) compared to the use of 5 serum markers alone in all HBV patients. CONCLUSION The combination of the 5 serum markers and FibroScan performed equally well in predicting significant fibrosis. The combination of the 5 serum markers is a reliable noninvasive method to predict significant liver fibrosis in patients with CHB. So, it provide another choice rather than FibroScan in predicting significant liver fibrosis.
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Affiliation(s)
- Huimin Dong
- Department of Laboratory Medicine, Third Affiliated Hospital, Sun Yat-sen University, PR China
| | - Changzhi Xu
- Department of Laboratory Medicine, Third Affiliated Hospital, Sun Yat-sen University, PR China
| | - Wenying Zhou
- Department of Laboratory Medicine, Third Affiliated Hospital, Sun Yat-sen University, PR China
| | - Yuan Liao
- Department of Laboratory Medicine, Third Affiliated Hospital, Sun Yat-sen University, PR China
| | - Junyan Cao
- Department of Laboratory Medicine, Third Affiliated Hospital, Sun Yat-sen University, PR China
| | - Zhaoxia Li
- Department of Laboratory Medicine, Third Affiliated Hospital, Sun Yat-sen University, PR China.
| | - Bo Hu
- Department of Laboratory Medicine, Third Affiliated Hospital, Sun Yat-sen University, PR China.
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91
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Du J, Huang Y, Li K, Yu X, Jin H, Yang L. Retina-derived endogenous sulfur dioxide might be a novel anti-apoptotic factor. Biochem Biophys Res Commun 2018; 496:S0006-291X(18)30118-9. [PMID: 29402407 DOI: 10.1016/j.bbrc.2018.01.103] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 01/16/2018] [Indexed: 01/25/2023]
Abstract
Endogenous sulfur dioxide (SO2) was found to be generated from the enzymatic reaction catalysed by aspartate transference 1 (AAT1) in the mammals and play importantly biological effects. In the present study, we explored the existence of endogenous SO2 pathway in mouse retinal tissues and 661w photoreceptor cell and investigated its possible pathophysiological role in the hydrogen peroxide (H2O2)-induced mouse photoreceptor cell apoptosis. The data showed that endogenous SO2 pathway including AAT1 expression and SO2 content was found to be presented in mouse photoreceptor cells. AAT1 protein and SO2 were mainly distributed in the cytoplasm, while a small amount of AAT1 protein and SO2 was found in the nucleus of 661W photoreceptor cells. H2O2 significantly decreased the SO2 content and AAT1 expression, but increased the cleaved caspase-3 protein level and the apoptotic index, and the number of TUNEL-positive cells in the 661W photoreceptor cells. Moreover, an AAT inhibitor HDX treatment inhibited SO2 synthesis and mimicked H2O2-induced apoptosis in 661W cells. In conclusion, the endogenous SO2/AAT1 pathway is firstly found to be present in mouse photoreceptor cells, and might play an important role in the prevention from mouse photoreceptor cell apoptosis.
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Affiliation(s)
- Jiantong Du
- Department of Ophthalmology, Peking University First Hospital, Beijing 100034, China
| | - Yaqian Huang
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Kun Li
- College of Chemistry, Sichuan University, Sichuan, Chengdu 610064, China
| | - Xiaoqi Yu
- College of Chemistry, Sichuan University, Sichuan, Chengdu 610064, China
| | - Hongfang Jin
- Department of Pediatrics, Peking University First Hospital, Beijing 100034, China
| | - Liu Yang
- Department of Ophthalmology, Peking University First Hospital, Beijing 100034, China.
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Lee S, Lee HA, Park B, Han H, Park BH, Oh SY, Hong YS, Ha EH, Park H. A prospective cohort study of the association between bisphenol A exposure and the serum levels of liver enzymes in children. Environ Res 2018; 161:195-201. [PMID: 29156342 DOI: 10.1016/j.envres.2017.11.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 10/09/2017] [Accepted: 11/02/2017] [Indexed: 05/21/2023]
Abstract
BACKGROUND Bisphenol A (BPA) is an endocrine disrupter that acts in an estrogen-like manner. Few studies have investigated the association between urinary BPA concentrations and adverse liver function. Additionally, most studies were cross-sectional in nature and included only adults. OBJECTIVES We evaluated BPA exposure levels and prospectively explored the association between BPA exposure and liver function in children. METHODS Data were retrieved from the ongoing prospective Ewha Birth and Growth Cohort Study. Urinary BPA concentrations were measured in 164 children at 3-5 and 7-9 years of age. At each visit, fasting blood and urine samples were collected, and questionnaires were completed. The associations between the BPA concentrations at these ages and the serum levels of liver enzymes measured at 10-13 years of age were analyzed (n = 113). Multiple regression analysis was performed with adjustment for covariates. We also explored whether the BPA level exhibited dose-response relationships with liver enzyme levels. RESULTS The median urinary BPA concentrations were 0.76μg/g creatinine at 3-5 years and 0.61μg/g creatinine at 7-9 years of age. The urinary BPA concentrations at the two ages were correlated significantly (r = 0.23, p < 0.01). The urinary BPA concentrations at 7-9 years, but not that at 3-5 years, was associated significantly with the serum levels of liver enzymes at 10-13 years of age (p < 0.05). Those in the top tertile of urinary BPA concentration had higher levels of liver enzymes than did others. After adjustment for covariates, dose-response relationships of the BPA level with liver enzyme levels were evident at 7-9 years, but not at 3-5 years. Notably, the effect size was larger and the dose-response relationships were more evident in boys than in girls. CONCLUSIONS Exposure of children to even low doses of BPA may adversely affect later liver function.
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Affiliation(s)
- Seonhwa Lee
- Department of Preventive Medicine, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Hye Ah Lee
- Clinical Trial Center, Mokdong Hospital, Ewha Womans University, Seoul, Republic of Korea
| | - Bomi Park
- Department of Preventive Medicine, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Hyejin Han
- Department of Preventive Medicine, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Bo Hyun Park
- Department of Preventive Medicine, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Se Young Oh
- Department of Food & Nutrition, Research Center for Human Ecology, College of Human Ecology, Kyung Hee University, Seoul, Republic of Korea
| | - Young Sun Hong
- Department of Internal Medicine, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Eun Hee Ha
- Department of Occupational and Environmental Medicine, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Hyesook Park
- Department of Preventive Medicine, School of Medicine, Ewha Womans University, Seoul, Republic of Korea.
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Whitfield JB, Masson S, Liangpunsakul S, Hyman J, Mueller S, Aithal G, Eyer F, Gleeson D, Thompson A, Stickel F, Soyka M, Daly AK, Cordell HJ, Liang T, Foroud T, Lumeng L, Pirmohamed M, Nalpas B, Bence C, Jacquet JM, Louvet A, Moirand R, Nahon P, Naveau S, Perney P, Podevin P, Haber PS, Seitz HK, Day CP, Mathurin P, Morgan TM, Seth D. Evaluation of laboratory tests for cirrhosis and for alcohol use, in the context of alcoholic cirrhosis. Alcohol 2018; 66:1-7. [PMID: 29277282 DOI: 10.1016/j.alcohol.2017.07.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 07/06/2017] [Accepted: 07/08/2017] [Indexed: 02/07/2023]
Abstract
Laboratory tests can play an important role in assessment of alcoholic patients, including for evaluation of liver damage and as markers of alcohol intake. Evidence on test performance should lead to better selection of appropriate tests and improved interpretation of results. We compared laboratory test results from 1578 patients between cases (with alcoholic cirrhosis; 753 men, 243 women) and controls (with equivalent lifetime alcohol intake but no liver disease; 439 men, 143 women). Comparisons were also made between 631 cases who had reportedly been abstinent from alcohol for over 60 days and 364 who had not. ROC curve analysis was used to estimate and compare tests' ability to distinguish patients with and without cirrhosis, and abstinent and drinking cases. The best tests for presence of cirrhosis were INR and bilirubin, with areas under the ROC curve (AUCs) of 0.91 ± 0.01 and 0.88 ± 0.01, respectively. Confining analysis to patients with no current or previous ascites gave AUCs of 0.88 ± 0.01 for INR and 0.85 ± 0.01 for bilirubin. GGT and AST showed discrimination between abstinence and recent drinking in patients with cirrhosis, including those without ascites, when appropriate (and for GGT, sex-specific) limits were used. For AST, a cut-off limit of 85 units/L gave 90% specificity and 37% sensitivity. For GGT, cut-off limits of 288 units/L in men and 138 units/L in women gave 90% specificity for both and 40% sensitivity in men, 63% sensitivity in women. INR and bilirubin show the best separation between patients with alcoholic cirrhosis (with or without ascites) and control patients with similar lifetime alcohol exposure. Although AST and GGT are substantially increased by liver disease, they can give useful information on recent alcohol intake in patients with alcoholic cirrhosis when appropriate cut-off limits are used.
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94
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Cheung KS, Seto WK, Fung J, Mak LY, Lai CL, Yuen MF. Prediction of hepatocellular carcinoma development by aminotransferase to platelet ratio index in primary biliary cholangitis. World J Gastroenterol 2017; 23:7863-7874. [PMID: 29209127 PMCID: PMC5703915 DOI: 10.3748/wjg.v23.i44.7863] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 09/25/2017] [Accepted: 09/28/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the usefulness of aspartate aminotransferase to platelet ratio index (APRI) in predicting hepatocellular carcinoma (HCC) risk in primary biliary cholangitis (PBC).
METHODS We identified PBC patients between 2000 and 2015 by searching the electronic medical database of a tertiary center. The hazard ratio (HR) of HCC with different risk factors was determined by Cox proportional hazards model.
RESULTS One hundred and forty-four PBC patients were recruited. Patients were diagnosed at a median age of 57.8 years [interquartile range (IQR): 48.7-71.5 years), and 41 (28.5%) patients had cirrhosis at baseline. The median follow-up duration was 6.9 years (range: 1.0-26.3 years). Twelve patients developed HCC, with an incidence rate of 10.6 cases per 1000 patient-years. The overall 5-, 10- and 15-year cumulative incidences of HCC were 2.3% 95%CI: 0%-4.8%), 8.4% (95%CI: 1.8%-14.5%) and 21.6% (6.8%-34.1%), respectively. Older age (HR = 1.07), cirrhosis (HR = 4.38) and APRI at 1 year after treatment (APRI-r1) > 0.54 (HR = 3.94) were independent factors for HCC development. APRI-r1, when combined with treatment response, further stratified HCC risk (log rank P < 0.05). The area under receiver operating curve of APRI-r1 in predicting HCC was 0.77 (95%CI: 0.64-0.88).
CONCLUSION APRI-r1 can be used to predict the development of HCC in PBC patients. Combination of APRI-r1 with treatment response can further stratify the HCC risk.
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Affiliation(s)
- Ka-Shing Cheung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Wai-Kay Seto
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
- State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong, China
| | - James Fung
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
- State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong, China
| | - Lung-Yi Mak
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Ching-Lung Lai
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
- State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong, China
| | - Man-Fung Yuen
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
- State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong, China
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95
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Primus S, Akoolo L, Schlachter S, Parveen N. Screening of patient blood samples for babesiosis using enzymatic assays. Ticks Tick Borne Dis 2017; 9:302-306. [PMID: 29150323 DOI: 10.1016/j.ttbdis.2017.11.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 10/30/2017] [Accepted: 11/09/2017] [Indexed: 01/17/2023]
Abstract
Human babesiosis is an emerging tick-borne disease in the United States and Europe. Transmitted by Ixodes ticks, the causative agent Babesia microti is an intraerythrocytic parasite that causes mild to deadly disease. Transmission of B. microti can also occur by transfusion of infected blood and blood products resulting in transfusion-transmitted babesiosis (TTB), which carries a high risk of fatality. To effectively manage this rise in B. microti infections, better screening tools are needed, which require minimal manipulation of the samples before testing. To this end, we tested two enzymatic assays, aspartate aminotransferase (AST) and alanine aminotransferase (ALT), for efficacy in diagnosis of babesiosis. The results show that AST and ALT activity is significantly higher in the plasma of B. microti-infected patients. Moreover, statistical analysis revealed that these assays have high sensitivity and positive predictive values, which highlights their usefulness as diagnostics for babesiosis. These standardized enzymatic assays can be used to perform high-throughput, large-scale screens of blood and blood products before they are certified safe for transfusion.
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Affiliation(s)
- Shekerah Primus
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers New Jersey Medical School, Newark, NJ 07013, USA
| | - Lavoisier Akoolo
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers New Jersey Medical School, Newark, NJ 07013, USA
| | - Samantha Schlachter
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers New Jersey Medical School, Newark, NJ 07013, USA
| | - Nikhat Parveen
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers New Jersey Medical School, Newark, NJ 07013, USA.
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Abstract
OBJECTIVES To estimate the range of hepatic involvement in dengue infections by assessing clinical and biochemical profile of adult dengue infected patients. METHODS Serologically confirmed 220 adult cases of dengue infections admitted to Mayo hospital from June 2013 to November 2013 were classified as having dengue fever, dengue haemorragic fever and dengue shock syndrome. The frequency and range of bilirubin, liver enzymes derangement and presence of liver enlargement in each group was calculated and further stratified according to age and gender. Patients with positive viral serology, chronic liver disease, malaria and typhoid were excluded from the study. RESULTS About 60% of DHF patients had hepatomegaly compared to 40% of DF patients. Liver dysfunction was more common in DF compared to DHF (38.15 vs 18.6%). Hyperbilirubinemia was noted in 40 (18.2%) patients, 28 (12.7%) in DF and 12(5.5%) in DHF. The mean serum bilirubin was higher in DHF [0.87+0.33] compared to DF [0.74+0.27]. Bilirubin was higher in male patients and in younger (<20 years) age group. ALT was elevated more frequently in male patients in age group of 31-40 years and in DF patients as compared to DHF [72(32.7% vs 40(18.2%)]. The mean serum ALT level was 103.7 U/l in DHF and 69.2U/l in DF. AST was raised in all DHF patients as compared to DF in which 40% patients had normal AST levels. Alkaline Phosphate was high in all DHF patients with a mean of 278.7. It was raised in most of the DF patients as well and majority of patients were in age group of 31-40 years. CONCLUSION Liver involvement is very common in dengue infections and is not limited to elevation of transaminases only. Bilirubin and Alkaline phosphatase are also raised in considerable number of patients. Therefore in adults with fever, jaundice, hepatomegaly and altered liver function tests, the diagnosis of dengue infection should be strongly considered in areas where dengue infection is endemic. List of abbreviations:DF: Dengue Fever DHF: Dengue Hemorrhagic Fever DSS: Dengue Shock Syndrome DIC: Disseminated intravascular coagulation ALT: Alanine transaminase AST: Aspartate aminotransferase.
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Affiliation(s)
- Somia Iqtadar
- Dr. Somia Iqtadar, FCPS (Medicine). Associate Professor of Medicine. King Edward Medical University, Lahore, Pakistan
| | - Nabeel Akbar
- Dr. Nabeel Akbar, MBBS. Postgraduate Resident of Cardiology. Punjab Institute of Cardiology, Lahore, Pakistan
| | - Naima Huma
- Dr. Naima Huma, MBBS. Postgraduate Resident of Medicine, King Edward Medical University, Lahore, Pakistan
| | - Fawad Ahmad Randhawa
- Dr. Fawad Ahmad Randhawa, FCPS (Medicine). Assistant Professor of Medicine, King Edward Medical University, Lahore, Pakistan
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97
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Liu L, Wang W, Zhang Y, Long J, Zhang Z, Li Q, Chen B, Li S, Hua Y, Shen S, Peng B. Declined Preoperative Aspartate Aminotransferase to Neutrophil Ratio Index Predicts Poor Prognosis in Patients with Intrahepatic Cholangiocarcinoma after Hepatectomy. Cancer Res Treat 2017; 50:538-550. [PMID: 28602056 PMCID: PMC5912131 DOI: 10.4143/crt.2017.106] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 05/24/2017] [Indexed: 01/05/2023] Open
Abstract
Purpose Various inflammation-based prognostic biomarkers such as the platelet to lymphocyte ratio and neutrophil to lymphocyte ratio, are related to poor survival in patients with intrahepatic cholangiocarcinoma (ICC). This study aims to investigate the prognostic value of the aspartate aminotransferase to neutrophil ratio index (ANRI) in ICC after hepatic resection. Materials and Methods Data of 184 patients with ICC after hepatectomy were retrospectively reviewed. The cut-off value of ANRIwas determined by a receiver operating characteristic curve. Preoperative ANRI and clinicopathological variables were analyzed. The predictive value of preoperative ANRI for prognosis of ICC was identified by univariate and multivariate analyses. Results The optimal cut-off value of ANRI was 6.7. ANRI was associated with tumor size, tumor recurrence, white blood cell, neutrophil count, aspartate aminotransferase, and alanine transaminase. Univariate analysis showed that ANRI, sex, tumor number, tumor size, tumor differentiation, lymph node metastasis, resection margin, clinical TNM stage, neutrophil count, and carcinoembryonic antigen were markedly correlated with overall survival (OS) and disease-free survival (DFS) in patients with ICC. Multivariable analyses revealed that ANRI, a tumor size > 6 cm, poor tumor differentiation, and an R1 resection margin were independent prognostic factors for both OS and DFS. Additionally, preoperative ANRI also had a significant value to predict prognosis in various subgroups of ICC, including serum hepatitis B surface antigen‒negative and preoperative elevated carbohydrate antigen 19-9 patients. Conclusion Preoperative declined ANRI is a noninvasive, simple, and effective predictor of poor prognosis in patients with ICC after hepatectomy.
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Affiliation(s)
- Lingyun Liu
- Department of Hepatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Wei Wang
- Department of Medical Ultrasonics, Institute of Diagnostic and Interventional Ultrasound, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yi Zhang
- Department of Hepatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jianting Long
- Department of Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zhaohui Zhang
- Department of Hepatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Qiao Li
- Department of Hepatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Bin Chen
- Department of Hepatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Shaoqiang Li
- Department of Hepatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yunpeng Hua
- Department of Hepatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Shunli Shen
- Department of Hepatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Baogang Peng
- Department of Hepatic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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98
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Willette AA, Webb JL, Lutz MW, Bendlin BB, Wennberg AM, Oh JM, Roses A, Koscik RL, Hermann BP, Dowling NM, Asthana S, Johnson SC. Family history and TOMM40 '523 interactive associations with memory in middle-aged and Alzheimer's disease cohorts. Alzheimers Dement 2017; 13:1217-1225. [PMID: 28549947 DOI: 10.1016/j.jalz.2017.03.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 01/24/2017] [Accepted: 03/25/2017] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Family history (FH) of Alzheimer's disease (AD) affects mitochondrial function and may modulate effects of translocase of the outer mitochondrial membrane 40 kDa (TOMM40) rs10524523 ('523) poly-T length on memory decline. METHODS For 912 nonapolipoprotein ε4 middle-aged adults and 365 aged adults across the AD spectrum, linear mixed models gauged FH and TOMM40 '523 interactions on memory and global cognition between baseline and up to 10 years later. A cerebrospinal fluid mitochondrial function biomarker was also assessed. RESULTS For FH negative participants, gene-dose preservation of memory and global cognition was seen for "very long" versus "short" carriers. For FH positive, an opposite gene-dose decline was seen for very long versus short carriers. Maternal FH was a stronger predictor in aged, but not middle-aged, participants. Similar gene-dose effects were seen for the mitochondrial biomarker aspartate aminotransferase. DISCUSSION These results may clarify conflicting findings on TOMM40 poly-T length and AD-related decline.
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Affiliation(s)
- Auriel A Willette
- Department of Food Science and Human Nutrition, Iowa State University, Ames, Iowa, USA; Department of Psychology, Iowa State University, Ames, Iowa, USA; Department of Neurology, University of Iowa, Iowa City, Iowa, USA.
| | - Joseph L Webb
- Department of Food Science and Human Nutrition, Iowa State University, Ames, Iowa, USA
| | - Michael W Lutz
- Bryan Alzheimer's Disease Research Center, Duke University, Durham, North Carolina, USA; Zinfandel Pharmaceuticals, Chapel Hill, North Carolina, USA
| | - Barbara B Bendlin
- Geriatric Research Education and Clinical Center, Wm. S. Middleton Veterans Hospital, Madison, Wisconsin, USA; Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Alexandra M Wennberg
- Department of Health Sciences Research, Mayo Clinic (Rochester), Rochester, Minnesota, USA
| | - Jennifer M Oh
- Geriatric Research Education and Clinical Center, Wm. S. Middleton Veterans Hospital, Madison, Wisconsin, USA; Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Allen Roses
- Bryan Alzheimer's Disease Research Center, Duke University, Durham, North Carolina, USA; Zinfandel Pharmaceuticals, Chapel Hill, North Carolina, USA
| | - Rebecca L Koscik
- Wisconsin Alzheimer's Institute, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Bruce P Hermann
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA; Wisconsin Alzheimer's Institute, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - N Maritza Dowling
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Sanjay Asthana
- Geriatric Research Education and Clinical Center, Wm. S. Middleton Veterans Hospital, Madison, Wisconsin, USA; Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA; Wisconsin Alzheimer's Institute, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Sterling C Johnson
- Geriatric Research Education and Clinical Center, Wm. S. Middleton Veterans Hospital, Madison, Wisconsin, USA; Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA; Wisconsin Alzheimer's Institute, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
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99
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Cho YH, Hwang JE, Chung HS, Kim MS, Hwang EC, Jung SI, Kang TW, Kwon DD, Choi SH, Kim HT, Kim TH, Kwon TG, Noh JH, Kim MK, Kim CS, Kang SG, Kang SH, Cheon J, Lee CH, Ku JY, Ha HK, Tae BS, Jeong CW, Ku JH, Kwak C, Kim HH. The De Ritis (aspartate transaminase/alanine transaminase) ratio as a predictor of oncological outcomes in patients after surgery for upper urinary tract urothelial carcinoma. Int Urol Nephrol 2017; 49:1383-1390. [PMID: 28484945 DOI: 10.1007/s11255-017-1613-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 05/02/2017] [Indexed: 12/20/2022]
Abstract
PURPOSE Recently, several studies have shown that the De Ritis ratio (aspartate transaminase/alanine transaminase) can be a useful prognostic biomarker for certain types of malignant tumors. However, the prognostic value of the De Ritis ratio in patients with upper tract urothelial carcinoma remains largely unknown. The aim of the present study was to evaluate the prognostic significance of the De Ritis ratio in patients who had undergone radical nephroureterectomy (RNU) for upper urinary tract urothelial carcinoma. METHODS In total, 1049 patients who underwent RNU at eight institutions from 2004 to 2015 were reviewed retrospectively. The De Ritis ratio and conventional clinicopathological parameters were analyzed. Survival analysis was performed using the Kaplan-Meier method and log-rank test. Multivariate analysis was carried out using the Cox proportional hazards regression model. De Ritis ratio cutoff values were derived from receiver operating characteristic (ROC) curves. RESULTS ROC analysis showed the cutoff De Ritis ratio for overall death to be 1.6 (p = 0.002). The cancer-specific survival (CSS) and overall survival (OS) were significantly shorter for patients with a high De Ritis ratio (>1.6). Multivariate analysis revealed an independent relationship between an increased De Ritis ratio (>1.6) and shorter CSS (hazard ratio, HR 2.49, 95% confidence interval, CI 1.70-3.64; p = 0.001) and OS (HR 1.84, 95% CI 1.34-2.52; p = 0.001). CONCLUSION The De Ritis ratio can be a significant predictor of oncological outcomes in patients with upper urinary tract urothelial carcinoma after surgery.
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Affiliation(s)
- Yang Hyun Cho
- Department of Urology, Chonnam National University Medical School, 42 Jebongro, Donggu, Gwangju, 501-757, Korea
| | - Jun Eul Hwang
- Department of Hemato-Oncology, Chonnam National University Medical School, Gwangju, Korea
| | - Ho Seok Chung
- Department of Urology, Chonnam National University Medical School, 42 Jebongro, Donggu, Gwangju, 501-757, Korea
| | - Myung Soo Kim
- Department of Urology, Chonnam National University Medical School, 42 Jebongro, Donggu, Gwangju, 501-757, Korea
| | - Eu Chang Hwang
- Department of Urology, Chonnam National University Medical School, 42 Jebongro, Donggu, Gwangju, 501-757, Korea.
| | - Seung Il Jung
- Department of Urology, Chonnam National University Medical School, 42 Jebongro, Donggu, Gwangju, 501-757, Korea
| | - Taek Won Kang
- Department of Urology, Chonnam National University Medical School, 42 Jebongro, Donggu, Gwangju, 501-757, Korea
| | - Dong Deuk Kwon
- Department of Urology, Chonnam National University Medical School, 42 Jebongro, Donggu, Gwangju, 501-757, Korea
| | - Seock Hwan Choi
- Department of Urology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Hyun Tae Kim
- Department of Urology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Tae-Hwan Kim
- Department of Urology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Tae Gyun Kwon
- Department of Urology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Joon Hwa Noh
- Department of Urology, Kwangju Christian Hospital, Gwangju, Korea
| | - Myung Ki Kim
- Department of Urology, Chonbuk National University Medical School, Jeonju, Korea
| | - Chul-Sung Kim
- Department of Urology, Chosun University School of Medicine, Gwangju, Korea
| | - Sung Gu Kang
- Department of Urology, Korea University College of Medicine, Seoul, Korea
| | - Seok Ho Kang
- Department of Urology, Korea University College of Medicine, Seoul, Korea
| | - Jun Cheon
- Department of Urology, Korea University College of Medicine, Seoul, Korea
| | - Chan Ho Lee
- Department of Urology, Pusan National University School of Medicine, Busan, Korea
| | - Ja Yoon Ku
- Department of Urology, Pusan National University School of Medicine, Busan, Korea
| | - Hong Koo Ha
- Department of Urology, Pusan National University School of Medicine, Busan, Korea
| | - Bum Sik Tae
- Department of Urology, Seoul National University College of Medicine, Seoul, Korea
| | - Chang Wook Jeong
- Department of Urology, Seoul National University College of Medicine, Seoul, Korea
| | - Ja Hyeon Ku
- Department of Urology, Seoul National University College of Medicine, Seoul, Korea
| | - Cheol Kwak
- Department of Urology, Seoul National University College of Medicine, Seoul, Korea
| | - Hyeon Hoe Kim
- Department of Urology, Seoul National University College of Medicine, Seoul, Korea
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100
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Zareei S, Boojar MMA, Amanlou M. Inhibition of liver alanine aminotransferase and aspartate aminotransferase by hesperidin and its aglycone hesperetin: An in vitro and in silico study. Life Sci 2017; 178:49-55. [PMID: 28385612 DOI: 10.1016/j.lfs.2017.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 03/24/2017] [Accepted: 04/01/2017] [Indexed: 12/27/2022]
Abstract
AIMS This study aimed to investigate the inhibitory effects of two natural flavonoids, hesperetin (HT) and hesperidin (HD), on two gluconeogenesis enzymes, alanine aminotransferase (ALT) and aspartate aminotransferase (AST) activities and their possible mechanisms of action. MAIN METHODS Rat liver incubated with different concentrations of HT and HD was used to measure enzyme activities spectrophotometrically, based on monitoring the oxidation of NADH to NAD+ at 340nm. Molecular docking simulation was also applied to reveal the molecular mechanism of the inhibition caused by HT and HD. KEY FINDINGS Both flavonoids demonstrated inhibitory effects against the enzyme activities, with IC50 values of 153.9 and 68.88μM for HT-ALT and HD-ALT treatment respectively. Likewise, the IC50 values of 85.29μM for HT-AST and 110.3μM for HD-AST were obtained from spectrophotometric results. CONCLUSION The docking simulation revealed that HT and HD block the enzyme entrance channel and prevent the substrates from accessing the enzyme active sites. Having prevented production of pyruvate, α-ketoglutarate, and the oxaloacetate, these two compounds inhibit hepatic gluconeogenesis and consequently, hinder the progression of diabetes. SIGNIFICANCE This study suggests that HT and HD may be considered as leading compounds for designing safe and effective drugs in management of increased ALT and AST-related disorders specially diabetes.
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Affiliation(s)
- Sara Zareei
- Department of Biochemistry, Kharazmi University, Mofateh Ave., Tehran, Iran
| | - Massoud M A Boojar
- Department of Biochemistry, Kharazmi University, Mofateh Ave., Tehran, Iran
| | - Massoud Amanlou
- Department of Medicinal Chemistry, Faculty of Pharmacy and Medicinal Plants Research Center, Tehran University of Medical Sciences, 16 Azar Ave., Tehran, Iran.
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