Observation on serumγ-glutamyl transpeptidase levels of patients with sub-clinical schistosomiasis before and after pathogen treatment / 中国血吸虫病防治杂志

Objective To observe the changes of serumγ?glutamyl transpeptidase(GGT)levels before and after the patho?gen treatment in patients with subclinical schistosomiasis,and explore its clinical value in the diagnosis and treatment of sub?clinical schistosomiasis. Methods Totally 109 patients with subclinical schistosomiasis,who were found in the endemic inves?tigation of schistosomiasis in Ezhou City,were selected as the investigation subjects,and then they were treated with praziquan?tel. The serum GGT levels of the subjects before and after the treatment were detected and compared. Results Before the treat?ment,the average value of the GGT levels of the 109 patients was(48.1 ± 45.9)IU/L,among which,the GGT levels of 69 cases (63.3%)were normal,and the levels of 40 cases(36.7%)were increased. After the treatment,the average GGT level of the pa?tients was(32.1 ± 23.4)IU/L,which decreased by 33.3%comparing with that before the treatment,and the difference had a statistical significance(U=2.17,P=0.01). The GGT levels of 65 patients decreased in different degrees. Among the 40 pa?tients whose GGT levels had increased before the treatment,the GGT levels of 31 ones returned to the normal. Conclusion The GGT level detection can accurately reflect the liver function in the patients with subclinical schistosomiasis ,and also it has certain clinical application value to judge the liver function damage and recovery of the patients before and after the pathogen treatment.

The Association of Metabolic Syndrome and Serum gamma-Glutamyl Transpeptidase: A 4-Year Cohort Study of 3,698 Korean Male Workers

The aim of the present study was to examine the causal-effect of baseline (year 2004) serum gamma-glutamyl transpeptidase (GGT) level with the prevalence of metabolic syndrome (MS) in year 2008. The study was comprised of male workers who underwent a regular health check-up in 2004 and 2008. MS was diagnosed according to the American Association of Clinical Endocrinologists (AACE) criteria. In the subgroup analysis according to serum GGT level, triglyceride (TG), low density lipoprotein cholesterol (LDL-C), and total cholesterol (TC) showed a significant increasing tendency (p < 0.001). In addition, unexpectedly results were consistent in non-drinkers (p < 0.001). GGT level was significantly associated with risk factors of MS (waist circumference [WC]: r = 0.18, p < 0.001; fasting blood glucose [FBG]: r = 0.16, p < 0.001; TG: r = 0.29, p < 0.001). As the secondary biomarker, homeostasis model assessment of insulin sensitivity (HOMA-S) and TC had significant correlations with GGT level (HOMA-S: r = -0.14, p < 0.001; TC: r = 0.21, p < 0.001). In the 4-year prospective analysis, the predictive effect of baseline GGT concentrations on change in MS status was evaluated using Cox proportional model. Elevated GGT concentrations measured in 2004 were associated with the risk of MS incidence after 4 years (GGT: HR 1.7 [95% CI: 1.2-2.3]) (p < 0.01). This observation indicates that an elevated GGT level could be suggested as a subsidiary marker for MS and partially reflects dyslipidemia as a component of MS.

Stereological Analysis of gamma-Glutamyl Transpeptidase Positive Foci in Diethylnitrosamine-Induced Hepatocarcinogenesis of Sprague-Dawley Rats / 대한간학회지

BACKGROUND/AIMS: Hepatocarcinogenesis of microscopically altered foci could be shown to be progressed into a trabecular pattern of hepatocellular carcinoma. And it is reported that down-regulation of TGF beta II receptor and up-regulation of TGF alpha and c-myc reveal the progression of diethylnitrosamine-induced foci into liver cell cancer. Up-regulation of TGF beta II receptor, however, causes apoptosis of foci. To determine characteristic morphology and growth kinetics of putatively precancerous y glutamyl transpeptidase (GGT) positive foci and hyperplastic nodules, a stereological quantification was attempted in the Peraino's neonatal rat model initiated by diethylnitrosamine and promoted by phenobarbital. MATERIALS/METHODS: Fifteen Sprague-Dawley rats were I.p. injected with 0.15 pmole/g of body weight of diethylnitrosamine mixed in corn oil at one day after birth. From weaning at 4 weeks of life, the rats were continuously fed 0.035% phenobarbital in drinking water and sacrified 5 rats at each time point of 8 weeks, 16 weeks, and 32 weeks. Teklad standard diet was fed after weaning. The livers obtained were fixed in freshly prepared, cold ethanol-acetic acid (99:1 vo1%). For the GGT histochemical staining, Rutenberg's method was modified, and counterstained with H & E or toluidine blue. For the stereological analysis GGT positive foci and nodules were traced in 200 consecutive tissue sections and quantified the 3 dimensional volumes by computer assisted planimetry. Either spheroidal or non-spheroidal morphology was determined by parabola 2nd degree equation ' y=ax+bx+c (sphere a=-P,). RESULTS: Thirty nine (55.71%) out of 70 representative lesions were nonspheroidal. Especially at 8 weeks, the 28 out of 40 GGT positive foci were irregular, nonspheroidal shape. Later times, however, GGT positive foci and reprogrammed nodular lesions were become spheroidal. Lilliefors probabilities test for spheroidal frequency was statistically significant (p<0.05). CONCLUSION: Stereologically non-spheroidal characteristics of the early GGT positive foci limit growth kinetic estimation by 3 dimensional volume quantitation but permit in later times in spheroidal, GGT positive foci and reprogrammed nodules showing fade-out of GGT activity. In other words, GGT positive foci may be clonally selected for growing into hyperplastic nodules and hepatocellular carcinoma or regressed by apoptosis.