GGT, gamma-glutamyl transferase

GGT,γ - 谷氨酰转移酶
  • 文章类型: Multicenter Study
    背景:囊性纤维化(CF)中的结节性肝(NOD)提示晚期CF肝病(aCFLD);在检测到超声NOD后,对肝病(LD)的进展知之甚少。
    方法:临床,实验室,和超声(US)数据来自CFLD研究参与者在筛查或随访时将NOD与正常(NL)进行比较。线性混合效应模型用于LD进展的危险因素,Kaplan-Meier估计用于事件发生时间。
    结果:54例NOD患儿(22例筛查,32次随访)和112NL进行了评估。用力呼气量的基线(BL)和轨迹,强制肺活量,NOD与NL的身高/BMIz评分相似.BL时NOD中的血小板较低(250比331×103/微升;p<0.001),NL中的血小板减少8600/年比2500。平均AST与血小板比率指数(1.1vs0.4;p<0.001),纤维化-4指数(0.4vs0.2,p<0.001),BL时NOD的脾脏大小z评分(SSZ)[1.5vs0.02;p<0.001]较高;NOD中SSZ增加0.5单位/年,NL中增加0.1单位/年。通过瞬时弹性成像的中位肝硬度(LSM)在NOD中较高(8.2kPa,IQR6-11.8)与NL(5.3,4.2-7,p<0.0001)。超过6.3年的随访(1.3-10.3),6NOD有食管静脉曲张(10年累积发生率:20%;95%CI:0.0%,40.0%),2有静脉曲张出血,2例接受肝移植;无腹水或肝性脑病。无NL经历肝脏相关事件。
    结论:NOD比NL更快地发展为临床上明显的门脉高压,而没有较差的生长或肺部疾病。
    Nodular liver (NOD) in cystic fibrosis (CF) suggests advanced CF liver disease (aCFLD); little is known about progression of liver disease (LD) after detection of sonographic NOD.
    Clinical, laboratory, and ultrasound (US) data from Prediction by Ultrasound of the Risk of Hepatic Cirrhosis in CFLD Study participants with NOD at screening or follow-up were compared with normal (NL). Linear mixed effects models were used for risk factors for LD progression and Kaplan-Meier estimator for time-to-event.
    54 children with NOD (22 screening, 32 follow-up) and 112 NL were evaluated. Baseline (BL) and trajectory of forced expiratory volume, forced vital capacity, height/BMI z-scores were similar in NOD vs NL. Platelets were lower in NOD at BL (250 vs 331×103/microL; p < 0.001) and decreased by 8600/year vs 2500 in NL. Mean AST to Platelet Ratio Index (1.1 vs 0.4; p < 0.001), Fibrosis-4 Index (0.4 vs 0.2, p < 0.001), and spleen size z-score (SSZ) [1.5 vs 0.02; p < 0.001] were higher in NOD at BL; SSZ increased by 0.5 unit/year in NOD vs 0.1 unit/year in NL. Median liver stiffness (LSM) by transient elastography was higher in NOD (8.2 kPa, IQR 6-11.8) vs NL (5.3, 4.2-7, p < 0.0001). Over 6.3 years follow-up (1.3-10.3), 6 NOD had esophageal varices (cumulative incidence in 10 years: 20%; 95% CI: 0.0%, 40.0%), 2 had variceal bleeding, and 2 underwent liver transplantation; none had ascites or hepatic encephalopathy. No NL experienced liver-related events.
    NOD developed clinically evident portal hypertension faster than NL without worse growth or lung disease.
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  • 文章类型: Journal Article
    熊果酸(UA)已用于替代医学数十年,人们对它的药用特性很感兴趣。尽管兴趣增加,尚未进行详细的长期毒性研究。这项研究的目的是确定UA对临床化学的长期毒性作用,血液学,凝血,病理学/形态学,大鼠的行为和运动技能。
    通过将UA溶解在Milli-Q水中的0.1%吐温80和0.5%羟丙基甲基纤维素的混合物中来制备溶液。对照组接收了车辆,测试组通过口服管饲法接受高达1000mg/kg/天的剂量。将该溶液连续90天给予雄性和雌性(Han-Wistar)大鼠。
    UA没有造成任何死亡,所有测试剂量的异常体重或异常病理。除此之外,在行为上没有观察到毒理学变化,神经毒性,凝血,与UA管理相关的血液学或临床化学。
    这项研究表明,连续90天口服UA不会导致任何剂量的毒性作用。因此,UA的NOAEL可能高于1000mg/kg/天。
    UNASSIGNED: Ursolic acid (UA) has been used in alternative medicine for decades, and there has been a great interest in its medicinal properties. Despite this increased interest, a detailed long-term toxicity study has not been performed. The objective of this study was to determine the long-term toxic effect of UA on clinical chemistry, haematology, coagulation, pathology/morphology, behaviour and motor skills in rats.
    UNASSIGNED: A solution was made by dissolving UA in a mixture of 0.1% Tween 80 and 0.5% hydroxypropyl methylcellulose in Milli-Q Water. The control group received the vehicle, and the test groups received a dose up to 1000 mg/kg/day via oral gavage. The solution was administered to both male and female (Han-Wistar) rats for 90 consecutive days.
    UNASSIGNED: UA did not cause any deaths, abnormal body weights or abnormal pathology at all test doses. In addition to that, no toxicological changes were observed in behaviour, neurotoxicity, coagulation, haematology or clinical chemistry that are related to the administration of UA.
    UNASSIGNED: This study indicates that oral dosing of UA for 90 consecutive days does not lead to toxic effects at any of the doses. Therefore, the NOAEL for UA is likely to be higher than 1000 mg/kg/day.
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  • 文章类型: Journal Article
    目的:本研究旨在评估美他多辛与安慰剂对非酒精性脂肪性肝炎(NASH)的超声和组织学特征的疗效和安全性。
    方法:134例活检证实的NASH患者随机接受美他多辛500mg每日2次(n=75)或安慰剂(n=59)。超过16周。
    最初,主要疗效终点是复合的:脂肪变性减少≥1级,肝坏死炎症减少≥1级和ALT正常化。因为>50%的患者拒绝第二次活检,决定只分析单个参数。
    结果:在肝脏组织学或ALT或AST方面,治疗组和安慰剂组之间没有显着差异。总的来说,如预期的那样,与基线相比,两组均显示血清ALT和AST降低。与安慰剂相比(54分9分),接受美他多辛治疗的患者(75例患者中的34例)在超声检查中脂肪变性分级1分改善率显著较高(P值<0.001).安全性和耐受性在治疗之间没有差异。
    结论:美他多辛对NASH患者肝组织学或血清ALT或AST的改善无效。然而,超声评估脂肪变性有显著改善.为了正确估计对组织学和转氨酶的影响,需要进一步研究更长的持续时间和更高的剂量。
    OBJECTIVE: The study aimed at assessing the therapeutic efficacy and safety of metadoxine versus placebo on the ultrasonographic and histological features of non-alcoholic steatohepatitis (NASH).
    METHODS: 134 subjects with biopsy-confirmed NASH were randomized to receive metadoxine 500 mg two times daily (n = 75) or placebo (n = 59) added to the standard of care, over 16 weeks.
    UNASSIGNED: Originally, the primary efficacy endpoint was the composite of: reduction in the steatosis by ≥1 grade, reduction in hepatic necro-inflammation by ≥1 grade and ALT normalization. Since >50% of patients refused the second biopsy, it was decided to analyze only the individual parameters.
    RESULTS: There was no significant difference between the treatment and the placebo groups in either liver histology or ALT or AST. Overall, as expected both groups showed reduction in serum ALT and AST compared to baseline. Compared to placebo (9 out 54), patients on metadoxine (34 out of 75) had significantly higher rates of improvement in 1-point in steatosis grade on ultrasound (P-value <0.001). Safety and tolerability did not differ between treatments.
    CONCLUSIONS: Metadoxine is not effective in improvement of liver histology or serum ALT or AST in patients with NASH. However, there was significant improvement of steatosis assessed by ultrasound. To properly estimate the effects on histology and transaminases, further studies of longer duration and at higher doses are needed.
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