scholarly journals Oxidative Stress as Estimated by Gamma-Glutamyl Transferase Levels Amplifies the Alkaline Phosphatase-Dependent Risk for Mortality in ESKD Patients on Dialysis

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Claudia Torino ◽  
Francesco Mattace-Raso ◽  
Jan L. C. M. van Saase ◽  
Maurizio Postorino ◽  
Giovanni Luigi Tripepi ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Alkaline Phosphatase ◽  
Liver Disease ◽  
Biological Effects ◽  
Sensitivity Analyses ◽  
Gamma Glutamyl Transferase ◽  
Risk Of Death ◽  
Systemic Oxidative Stress ◽  
Glutamyl Transferase ◽  
End Stage

Alkaline phosphatase (Alk-Phos) is a powerful predictor of death in patients with end-stage kidney disease (ESKD) and oxidative stress is a strong inducer of Alk-Phos in various tissues. We tested the hypothesis that oxidative stress, as estimated by a robust marker of systemic oxidative stress likeγ-Glutamyl-Transpeptidase (GGT) levels, may interact with Alk-Phos in the high risk of death in a cohort of 993 ESKD patients maintained on chronic dialysis. In fully adjusted analyses the HR for mortality associated with Alk-Phos (50 IU/L increase) was progressively higher across GGT quintiles, being minimal in patients in the first quintile (HR: 0.89, 95% CI: 0.77–1.03) and highest in the GGT fifth quintile (HR: 1.13, 95% CI: 1.03–1.2) (Pfor the effect modification = 0.02). These findings were fully confirmed in sensitivity analyses excluding patients with preexisting liver disease, excessive alcohol intake, or altered liver disease biomarkers. GGT amplifies the risk of death associated with high Alk-Phos levels in ESKD patients. This observation is compatible with the hypothesis that oxidative stress is a strong modifier of the adverse biological effects of high Alk-Phos in this population.

Quantitative fractionation of alkaline phosphatase isoenzymes according to their thermostability.

1976 ◽  
Vol 22 (1) ◽  
pp. 42-48 ◽  
Author(s):  
C PetitClerc
Keyword(s):  
Alkaline Phosphatase ◽  
Liver Disease ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Normal Serum ◽  
Transferase Activity ◽  
Gamma Glutamyl Transferase ◽  
Heat Labile ◽  
Alkaline Phosphatase Isoenzymes ◽  
Glutamyl Transferase

Abstract Continuous monitoring of heat denaturation of a mixture of alkaline phosphatase isoenzymes at 60 degrees C and pH 7.5 permits the simultaneous direct identification and quantitation of three isoenzymes: the placental isoenzyme, the L-phenylalanine-sensitive intestinal isoenzyme, and the liver isoenzyme (hepatocytic). The isoenzyme that is principally of bone origin cannot be identified as such without the help of other diagnostic aids and the patient's medical history. All human tissues contain alkaline phosphatase, many organs more than one of the isoenzymes. Liver alkaline phosphatase, which constitutes 40-50% of normal serum alkaline phosphatase activity, was measured in the serum of persons with various liver diseases. Its activity exceeded normal in all types of liver disease; in 80% of cases this increase was accompanied by increased gamma-glutamyl-transferase activity, but the quantitative correlationship (r = 0.54) was not as good as expected if both enzymes come from the same source and are indices of liver dieases. Liver alkaline phosphatase activity increases in the blood early in liver disease, before most liver tests show abnormalities. The other major isoenzyme of normal serum probably represents a mixture of isoenzymes from bone and reticulo-endothelial and vascular tissues, which all contain the same "very heat-labile" alkaline phosphatase. Cord blood and children's sera contain mostly this very heat-labile isoenzyme.

scholarly journals Evaluation of Serum Zinc Status and Serum Alkaline Phosphatase Activity in Alcoholic Liver Disease Patients - A Hospital Based Study from Chennai, Tamil Nadu

2021 ◽  
Vol 8 (24) ◽  
pp. 2100-2105
Author(s):  
Uma T ◽  
Nirmaladevi P ◽  
Shanthi R ◽  
Mahalakshmi R
Keyword(s):  
Alkaline Phosphatase ◽  
Liver Disease ◽  
Phosphatase Activity ◽  
Alcoholic Liver Disease ◽  
Alkaline Phosphatase Activity ◽  
Serum Zinc ◽  
Meld Score ◽  
Gamma Glutamyl Transferase ◽  
Zinc Status ◽  
Glutamyl Transferase

BACKGROUND Alcoholism remains to be the major cause of morbidity and mortality throughout the world. Consuming alcohol is the potent etiological factor for the development of alcoholic liver diseases (ALD), ranging from fatty liver to hepatocellular carcinoma with varying rates of development in both genders depending on the quality, quantity, and duration of the drink. Zinc deficiency has been documented with the progression of alcoholic liver disease. It is also a well-known fact that zinc is a co-factor for enzyme alkaline phosphatase. This study aims to assess the zinc status and alkaline phosphatase activity in patients with various stages of alcoholic liver disease, correlate zinc with alkaline phosphatase activity, albumin, gamma glutamyl transferase activity, MELD score and duration of alcohol intake and analysing the need for evaluating zinc in these patients. METHODS This comparative observational study involves group I healthy controls and group II patients diagnosed to have ethanol related decompensated liver disease with or without portal hypertension for more than three years from the Department of Medical Gastroenterology, Government Medical College Hospital. 5 ml of venous blood in fasting state was collected from both groups and assayed for serum zinc, and serum alkaline phosphatase activity. The data was statistically analysed. RESULTS The study results demonstrate that higher percentage of patients with alcoholic liver disease have low serum zinc levels than healthy controls. Zinc when compared with variables like serum albumin, duration of alcohol intake, MELD score, serum gamma glutamyl transferase and alkaline phosphatase in the case and control groups were found to be statistically significant. CONCLUSIONS There is decrease in serum zinc level and increased alkaline phosphatase activity in patients with alcoholic liver disease. The statistically significant data is a strong rationale for evaluating the zinc status and thereby supplementing zinc to patients with alcoholic liver disease. KEYWORDS Alcoholic Liver Disease, Zinc, Alkaline Phosphatase, MELD Score

Interactions Between Dental Composite Resins and Saliva A comparative biochemical in vitro study

2019 ◽  
Vol 56 (3) ◽  
pp. 529-533
Author(s):  
Mihaela Pantea ◽  
Diana Andreea Ighigeanu ◽  
Alexandra Totan ◽  
Maria Greabu ◽  
Daniela Miricescu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
In Vitro Study ◽  
Composite Resins ◽  
Vitro Study ◽  
Dental Composite ◽  
Gamma Glutamyl Transferase ◽  
Specific Protocol ◽  
Dental Composite Resins ◽  
Glutamyl Transferase

This in vitro study analyses the biochemical interaction between saliva and three types of dental composite resins (a direct resin, an indirect resin and a dual-cure resin used for cementation of indirect dental restorations). The resin samples were obtained following a specific protocol and in line with the producers� recommendations; the resin samples were incubated with saliva samples collected from 19 healthy volunteers. The obtained results showed that the tested composite resins did not produce significant changes in oxidative stress parameters that were analysed (albumin, uric acid, GGT / gamma glutamyl transferase, OXSR-1 / oxidative stress responsive kinase 1) and do not influence the inflammatory salivary status reflected by the levels of IL-6 - an inflammatory marker.

Clinical and pathologic features of acute bovine liver disease in Australia

2021 ◽  
pp. 104063872110258
Author(s):  
Eve M. Manthorpe ◽  
Ian V. Jerrett ◽  
Grant T. Rawlin ◽  
Lucy Woolford
Keyword(s):  
Liver Disease ◽  
Clinical Signs ◽  
Bovine Liver ◽  
Gamma Glutamyl Transferase ◽  
Reticular Pattern ◽  
Pathologic Features ◽  
Histologic Lesion ◽  
Massive Necrosis ◽  
Glutamyl Transferase ◽  
Lactating Dairy Cattle

Acute bovine liver disease (ABLD) is a sporadic hepatic disease affecting cattle in southern Australia, characterized histologically by striking periportal hepatocellular necrosis. The cause of ABLD is unknown; however, the seasonality and acute presentation of outbreaks suggest mycotoxin involvement. We describe here the clinical and pathologic findings of ABLD in 45 naturally affected cattle from 13 outbreaks occurring from 2010 to 2019 in Victoria, Australia. Outbreaks occurred in herds located along the southern coastal plain of Victoria and were observed most frequently in lactating dairy cattle. Clinical signs commonly included a combination of mild photosensitization, progressive neurologic signs, and hypogalactia, which preceded death by ≤ 48 h. All affected animals had marked elevations in activities of glutamate dehydrogenase, aspartate aminotransferase, and gamma-glutamyl transferase. At autopsy, the most common lesions were serosal petechiae and/or gastrointestinal hemorrhage, and hepatomegaly with a pronounced hepatic reticular pattern. The principal histologic lesion was widespread—severe periportal hepatocellular coagulative necrosis and erythrocyte pooling—which often extended to massive necrosis. Lesions in other organs were uncommon. Our study of ABLD suggests involvement of a potent hepatotoxin that is either directly cytopathic or requires bioactivation by periportal-specific enzymes.

scholarly journals Dynamic changes in liver function parameters in patients with coronavirus disease 2019: a multicentre, retrospective study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Qing-Lei Zeng ◽  
Zu-Jiang Yu ◽  
Fanpu Ji ◽  
Guang-Ming Li ◽  
Guo-Fan Zhang ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Liver Disease ◽  
Liver Function ◽  
Chronic Liver Disease ◽  
Chronic Liver ◽  
Gamma Glutamyl Transferase ◽  
Dynamic Changes ◽  
Viral Shedding ◽  
Glutamyl Transferase ◽  
Multicentre Retrospective Study

Abstract Background Liver injuries have been reported in patients with coronavirus disease 2019 (COVID-19). This study aimed to investigate the clinical role played by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Methods In this multicentre, retrospective study, the parameters of liver function tests in COVID-19 inpatients were compared between various time-points in reference to SARS-CoV-2 shedding, and 3 to 7 days before the first detection of viral shedding was regarded as the reference baseline. Results In total, 70 COVID-19 inpatients were enrolled. Twenty-two (31.4%) patients had a self-medication history after illness. At baseline, 10 (14.3%), 7 (10%), 9 (12.9%), 2 (2.9%), 15 (21.4%), and 4 (5.7%) patients already had abnormal alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma-glutamyl transferase (GGT), alkaline phosphatase (ALP), albumin, and total bilirubin (TBIL) values, respectively. ALT and AST abnormal rates and levels did not show any significant dynamic changes during the full period of viral shedding (all p > 0.05). The GGT abnormal rate (p = 0.008) and level (p = 0.033) significantly increased on day 10 of viral shedding. Meanwhile, no simultaneous significant increases in abnormal ALP rates and levels were observed. TBIL abnormal rates and levels significantly increased on days 1 and 5 of viral shedding (all p < 0.05). Albumin abnormal decrease rates increased, and levels decreased consistently from baseline to SARS-CoV-2 clearance day (all p < 0.05). Thirteen (18.6%) patients had chronic liver disease, two of whom died. The ALT and AST abnormal rates and levels did not increase in patients with chronic liver disease during SARS-CoV-2 shedding. Conclusions SARS-CoV-2 does not directly lead to elevations in ALT and AST but may result in elevations in GGT and TBIL; albumin decreased extraordinarily even when SARS-CoV-2 shedding ended.

scholarly journals Pemafibrate Ameliorates Liver Dysfunction and Fatty Liver in Patients with Non-Alcoholic Fatty Liver Disease with Hypertriglyceridemia: A Retrospective Study with the Outcome after a Mid-Term Follow-Up

Diagnostics ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2316
Author(s):  
Suguru Ikeda ◽  
Takaaki Sugihara ◽  
Takuya Kihara ◽  
Yukako Matsuki ◽  
Takakazu Nagahara ◽  
...  
Keyword(s):  
Liver Disease ◽  
Fatty Liver ◽  
Fatty Liver Disease ◽  
Serum Triglyceride ◽  
Gamma Glutamyl Transferase ◽  
Alcoholic Fatty Liver ◽  
Clinical Criteria ◽  
One Year ◽  
Glutamyl Transferase ◽  
Alcoholic Fatty Liver Disease

Non-alcoholic fatty liver disease (NAFLD) is a chronic liver disease related to metabolic syndrome. No standard pharmacological treatment has yet been established. We retrospectively evaluated the efficacy of pemafibrate in 16 NAFLD patients (11 men and 5 women; median age, 59 years; range, 27–81 years) who had taken pemafibrate for at least one year. They were all diagnosed with fatty liver according to imaging and clinical criteria. They were administered pemafibrate from October 2018 to October 2021 (median, 94 weeks; range, 56–157 weeks). Serum triglyceride was significantly decreased by −41.9% (342.3 ± 54.0 to 198.9 ± 20.4 mg/dL, p < 0.001). Aspartate aminotransferase (AST), alanine aminotransferase, and gamma-glutamyl transferase levels significantly decreased by −42.1% (49.6 ± 7.0 to 28.7 ± 3.4 U/L, p < 0.001), −57.1% (65.1 ± 10.8 to 27.9 ± 3.7 U/L, p < 0.001), and −43.2% (68.9 ± 10.9 to 39.1 ± 5.3 U/L, p < 0.05), respectively. The AST to platelet ratio (APRI) (0.8 ± 0.1 to 0.4 ± 0.1, p < 0.001) and fibrosis based on four factors (FIB-4) index (1.8 ± 0.3 to 1.4 ± 0.2, p < 0.05) also significantly decreased. Liver attenuation (39.1 ± 1.2 to 57.8 ± 2.7 HU, p = 0.028) and liver/spleen ratio (0.76 ± 0.04 to 1.18 ± 0.02, p = 0.012) significantly improved in three patients, as assessed by computed tomography. In conclusion, pemafibrate significantly improves serum triglyceride levels, liver function, FIB-4 index, APRI, and fatty liver in NAFLD patients with hypertriglyceridemia.

Obstructive Sleep Apnea and Cardiovascular Risk Markers (Fibrinogen & Gamma Glutamyl Transferase) in Obese Males

2021 ◽  
Vol 15 (12) ◽  
pp. 3312-3314
Author(s):  
Shagufta Khaliq ◽  
Mudassar Ali Roomi ◽  
Shaheena Naz ◽  
Komal Iqbal ◽  
Muhammad Imran Ashraf ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Blood Pressure ◽  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Gamma Glutamyl Transferase ◽  
Strong Positive Correlation ◽  
Positive Correlation ◽  
Gamma Glutamyl ◽  
Obstructive Sleep ◽  
Glutamyl Transferase

Aim: To determine and compare gamma glutamyl transferase (GGT) and fibrinogen among obese males with and without obstructive sleep apnea (OSA). Second objective was to investigate correlation between blood pressure and GGT. Methodology: Sixty-four obese males aged 20-45 years with BMI > 25kg/m2 were included by convenience sampling. The study was conducted, after obtaining ethical approval from IRB, at the Department of Physiology, Post Graduate Medical Institute, Lahore from August 2014 to May 2015. Participants having acute or chronic inflammatory conditions were excluded. Participants were screened for OSA by Berlin and STOP BANG questionnaires. Diagnosis of OSA was made by overnight portable pulse oximetry. The participants were divided into two groups. Group I had 32 obese males with OSA. Group II contained 32 obese males without OSA. After an overnight fasting of 10-12 hours blood samples were drawn. Serum fibrinogen and GGT were measured by spectrophotometer. The data was analyzed using SPSS-22. Quantitative variables were compared between the two groups by Mann-Whitney U test. Spearman correlation was used to correlate blood pressure and GGT among the participants. Results: Fibrinogen was significantly raised (p=0.015) in obese males with OSA. Systolic blood pressure (p=0.003), diastolic blood pressure (p=0.001) and mean arterial blood pressure (p<0.001) showed strong positive correlation with GGT in obese males with OSA. Conclusion: Proinflammatory, procoagulant and proatherogenic marker fibrinogen levels were significantly raised in obese otherwise healthy males with OSA. Oxidative stress marker GGT showed strong positive correlation with blood pressure in obese males with OSA. Keywords: Fibrinogen, gamma glutamyl transferase, inflammation, obstructive sleep apnea, oxidative stress

Abstract P027: Gamma-Glutamyl Transferase is More Strongly Associated with Diabetes Risk Than Alanine and Aspartate Aminotransferase: Results from the Atherosclerosis Risk in Communities (ARIC) StudyStudy

Circulation ◽  
2012 ◽  
Vol 125 (suppl_10) ◽  
Author(s):  
Andrea L Christman ◽  
Mariana Lazo ◽  
Chiadi E Ndumele ◽  
James Pankow ◽  
Josef Coresh ◽  
...  
Keyword(s):  
Risk Factors ◽  
Liver Disease ◽  
Aspartate Aminotransferase ◽  
Liver Enzymes ◽  
Gamma Glutamyl Transferase ◽  
Community Based ◽  
Gamma Glutamyl ◽  
Spline Models ◽  
Glutamyl Transferase ◽  
Diagnosed Diabetes

Introduction: Liver disease and diabetes often co-occur and have shared risk factors. We undertook this study to investigate which liver enzyme (alanine aminotransferase (ALT), aspartate aminotransferase (AST), or gamma-glutamyl transferase (GGT)) would be most strongly associated with incident diabetes in a large, community-based population. Hypothesis: We hypothesized that ALT, AST, and GGT would be independently associated with diabetes and that ALT would be most strongly associated with diabetes due to its liver specificity. Methods: We conducted a prospective analysis of 9,524 participants in the ARIC Study without diagnosed diabetes or a history of high alcohol consumption (>14 [women] and >21 [men] drinks/week). Enzymes were measured from stored plasma samples. We examined the association of sex-specific quartiles of liver enzymes with incident diagnosed diabetes using Cox proportional hazards models adjusted for demographic, lifestyle, and behavioral risk factors. Restricted cubic spline models were fit to model the continuous associations. Results: Median ALT, AST, and GGT were 13, 18, and 22 U/L, respectively. During a median follow-up of 11 years, there were 1,905 self-reported cases of diabetes. All three liver enzymes were significantly associated with diabetes, even after adjustment for all covariates (HRs (95% CIs): ALT, 1.63 (1.44, 1.85); AST, 1.23 (1.09, 1.40); GGT, 1.99 (1.71, 2.30) comparing Q4 versus Q1). The restricted cubic spline models show similar patterns (Figure). After simultaneously adjustment for the other liver enzymes, only ALT and GGT remained significantly associated with diabetes. In analyses further restricted to participants who reported never consuming alcohol only GGT remained significant. Conclusion: In this community-based population, GGT was more strongly associated with diabetes risk than ALT and AST. Although ALT and AST are considered to be more specific markers of liver disease, higher levels of GGT may be a more important risk factor for diabetes.

scholarly journals Roles of Moringa oleifera Leaf Extract in Improving the Impact of High Dietary Intake of Monosodium Glutamate-Induced Liver Toxicity, Oxidative Stress, Genotoxicity, DNA Damage, and PCNA Alterations in Male Rats

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Tarfa Albrahim ◽  
Manal Abdulaziz Binobead
Keyword(s):  
Oxidative Stress ◽  
Dna Damage ◽  
Leaf Extract ◽  
Liver Toxicity ◽  
Monosodium Glutamate ◽  
Male Rats ◽  
Control Group ◽  
Gamma Glutamyl Transferase ◽  
Glutamyl Transferase ◽  
The Impact

It is common for food to be made more palatable through the use of the flavour enhancer monosodium glutamate, also known as vetsin powder. The purpose of the study described in this paper was to explore how vetsin-induced hepatic toxicity, DNA fragmentation, damage, and oxidative stress modifications could be mitigated with moringa leaf extract (MLE). To that end, 40 male rats were separated into four groups: normal control, positive control or MLE, vetsin, and vetsin combined with MLE. Results indicated that, compared to the control group, the levels of serum alanine aminotransferase (ALT), aminotransferase (AST), alkaline phosphatase (ALP), gamma-glutamyl transferase (GGT), liver malondialdehyde (MDA), DNA damage, injury, PCNA, and P53 expressions were significantly enhanced by the administration of vetsin (P<0.05). However, the vetsin group had significantly reduced levels of albumin, globulin, total protein, liver glutathione (GSH), superoxide dismutase enzyme (SOD), catalase, and glutathione S-transferase (GST) enzyme activities (P<0.05) by comparison to control. Meanwhile, modifications in liver functions, oxidative stress, DNA damage, liver injury, and PCNA expression were alleviated when vetsin was administered alongside MLE. The authors conclude that vetsin may have many side effects and that MLE can ameliorate biochemical changes, oxidative stress, hepatic injury, PCNA, and P53 alterations induced by vetsin administration.

scholarly journals Validation of a new prognostic model to predict short and medium-term survival in patients with liver cirrhosis

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Tomasz Dziodzio ◽  
Robert Öllinger ◽  
Wenzel Schöning ◽  
Antonia Rothkäppel ◽  
Radoslav Nikolov ◽  
...  
Keyword(s):  
Liver Cirrhosis ◽  
Liver Disease ◽  
Risk Score ◽  
Meld Score ◽  
Medium Term ◽  
Term Survival ◽  
Risk Of Death ◽  
Class B ◽  
Pugh Class ◽  
End Stage

Abstract Background MELD score and MELD score derivates are used to objectify and grade the risk of liver-related death in patients with liver cirrhosis. We recently proposed a new predictive model that combines serum creatinine levels and maximum liver function capacity (LiMAx®), namely the CreLiMAx risk score. In this validation study we have aimed to reproduce its diagnostic accuracy in patients with end-stage liver disease. Methods Liver function of 113 patients with liver cirrhosis was prospectively investigated. Primary end-point of the study was liver-related death within 12 months of follow-up. Results Alcoholic liver disease was the main cause of liver disease (n = 51; 45%). Within 12 months of follow-up 11 patients (9.7%) underwent liver transplantation and 17 (15.1%) died (13 deaths were related to liver disease, two not). Measures of diagnostic accuracy were comparable for MELD, MELD-Na and the CreLiMAx risk score as to power in predicting short and medium-term mortality risk in the overall cohort: AUROCS for liver related risk of death were for MELD [6 months 0.89 (95% CI 0.80–0.98) p < 0.001; 12 months 0.89 (95% CI 0.81–0.96) p < 0.001]; MELD-Na [6 months 0.93 (95% CI 0.85–1.00) p < 0.001 and 12 months 0.89 (95% CI 0.80–0.98) p < 0.001]; CPS 6 months 0.91 (95% CI 0.85–0.97) p < 0.01 and 12 months 0.88 (95% CI 0.80–0.96) p < 0.001] and CreLiMAx score [6 months 0.80 (95% CI 0.67–0.96) p < 0.01 and 12 months 0.79 (95% CI 0.64–0.94) p = 0.001]. In a subgroup analysis of patients with Child-Pugh Class B cirrhosis, the CreLiMAx risk score remained the only parameter significantly differing in non-survivors and survivors. Furthermore, in these patients the proposed score had a good predictive performance. Conclusion The CreLiMAx risk score appears to be a competitive and valid tool for estimating not only short- but also medium-term survival of patients with end-stage liver disease. Particularly in patients with Child-Pugh Class B cirrhosis the new score showed a good ability to identify patients not at risk of death.

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