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??Abstract?? Objective??To evaluate the value of biochemical markers in the diagnosis of biliary atresia ??BA?? and neonatal intrahepatic cholestasis caused by citrin deficiency ??NICCD??. Methods??Totally 77 infants in hospital with infantile hepatitis syndrome ??IHS?? were enrolled from December 1?? 2008 to March 31?? 2009. Totally 27 patients were diagnosed as having BA and 11 with NICCD. Biochemical markers were compared between groups including alanine transaminase ALT?? aspartate transaminase AST ?? alkaline phosphatase ALP?? γ-glutamyl transpeptidase γ-GT?? total bilirubin TB?? direct bilirubin DB?? total bile acid TBA?? total cholesterol TC??to compute ALT/AST??ALP/γ-GT and glucose GLU?? lactic acid LAC?? total protein TP?? albumin ALB in the NICCD group. The data were analyzed by T test and ROC curve with SPSS10.0. Results??γ-GT was significantly elevated in the infants with BA when compared to non-BA group ??P = 0.003???? cut-off point was 332.5U/L. ALP/γ-GT was significantly lower in the patients with BA??and cut-off point was 1.93. The infants with NICCD had significantly different biochemical markers including GLU?? LAC?? TP?? ALB?? ALT/AST and γ-GT. Conclusion??Biochemical markers could be considered as complementary diagnosis of BA and NICCD for differentiating infants with IHS.     

婴儿胆汁淤积性肝病在中国的研究现状的可视化分析

目的展现中国关于婴儿胆汁淤积性肝病的研究情况,描绘该领域的研究趋势,提供未来研究的可能方向。方法采用共词分析法,于2016年10月以"胆汁淤积"及"婴儿"等关键词在中国知网(CNKI)及万方数据库进行文献检索及筛选,通过Excel2010建立高频关键词共现矩阵,使用Ucinet 6.0及Netdraw绘制高频关键词可视化网络图。结果共纳入相关文献383篇。共现分析图显示,在整个国内研究领域中以"婴儿""胆汁淤积"为核心,"婴儿肝炎综合征""新生儿""肝内""胆道闭锁""遗传代谢""肝炎""巨细胞病毒""黄疸""结合胆红素"为主要研究热点,其余大部分研究集中在"肠外营养""肝胆显像""(基因)突变""肝活检"等方面,而关于疾病的外科诊断技术以及疾病的治疗的研究较少。结论中国关于婴儿胆汁淤积性肝病的研究热点集中于病因学及鉴别诊断,基因诊断是近年来的关注点,有关治疗的研究尚有待加强,新的诊断技术是未来主要的研究方向。     

Bile acids in serum and bile of infants with cholestatic syndromes

The concentration of individual bile acids in serum was measured in 18 neonates and infants with various cholestatic conditions (extrahepatic biliary atresia, neonatal hepatitis syndrome, chronic intrahepatic cholestasis and posthemolytic cholestasis). The cholate/chenodeoxycholate ratio in serum was smaller than one in all patients with neonatal hepatitis syndrome or extrahepatic biliary atresia, cholestatic conditions which were accompanied by signs of liver cell injury. It was greater than one in the patients with chronic intrahepatic cholestasis. Administration of cholestyramine to patients with patent extrahepatic bile ducts decreased the total concentration bile acids in serum and elevated the cholate/chenodeoxycholate ratio. Thus, cholestyramine administration may be of diagnostic value for evaluation of bile duct patency in cholestasis of infancy. Differences between the bile acid pattern in serum and bile were observed. Thus, the cholate/chenodeoxycholate ratio was always higher in bile than in serum. 3beta-hydroxy-5-cholenoic acid found in serum was not detectable in bile. This finding suggests that impairment of biliary excretion rather than increased hepatic synthesis is responsible for elevation of this monohydroxy bile acid in serum.     

Unconjugated, Glycine-conjugated, Taurine-conjugated Bile Acid Nonsulfates and Sulfates in Urine of Young Infants with Cholestasis

ABSTRACT. A direct assay system for conjugated bile acids using an enzymatic procedure and high-performance liquid chromatography was used for the analysis of urinary bile acid profiles in young infants with intrahepatic cholestasis (idiopathic neonatal hepatitis syndrome) or extra-hepatic biliary atresia. The major urinary bile acids were cholate and chenodeoxycholate conjugates, but a small amount of deoxycholate and 3β-hydroxy-5-cholenate conjugates were detected. Although there was no significant difference in total bile acid excretion between patients with intrahepatic cholestasis and extrahepatic biliary atresia, mean ratios of cholate to chenodeoxycholate and sulfated to total urinary bile acids were different between the two groups examined (5.63±2.83 vs. 2.50±1.25, p <0.05, 15.8±9.9 vs. 34.5±9.9%, p < 0.005). The proportion of taurine-conjugated chenodeoxycholate in the sulfate fraction to the total bile acid was lower in intrahepatic cholestasis, compared with that in biliary atresia (7.7±7.5 vs. 22.7±7.8 %, p < 0.005). The greater ratio of cholate to chenodeoxycholate and the reduced excretion of sulfated urinary bile acids in intrahepatic cholestasis was due to decreased taurine-conjugated chenodeoxycholate sulfate excretion.     

婴儿胆汁淤积症的病因研究进展

婴儿胆汁淤积症是一类多因素引起的以高胆红素血症为临床特点的综合征,病因谱广泛,包括感染、中毒、肝内外胆管发育异常及遗传代谢缺陷等.感染、胆道闭锁患儿占胆汁淤积症患儿半数以上,除了常见病因,citrin缺陷症、Alagille综合征、进行性家族性胆汁淤积症等新病因不断被认识,这些疾病临床症状与胆道闭锁相似,预后及治疗各不...     

Unconjugated, glycine-conjugated, taurine-conjugated bile acid nonsulfates and sulfates in urine of young infants with cholestasis

A direct assay system for conjugated bile acids using an enzymatic procedure and high-performance liquid chromatography was used for the analysis of urinary bile acid profiles in young infants with intrahepatic cholestasis (idiopathic neonatal hepatitis syndrome) or extra-hepatic biliary atresia. The major urinary bile acids were cholate and chenodeoxycholate conjugates, but a small amount of deoxycholate and 3 beta-hydroxy-5-cholenate conjugates were detected. Although there was no significant difference in total bile acid excretion between patients with intrahepatic cholestasis and extrahepatic biliary atresia, mean ratios of cholate to chenodeoxycholate and sulfated to total urinary bile acids were different between the two groups examined (5.63 +/- 2.83 vs. 2.50 +/- 1.25, p less than 0.05, 15.8 +/- 9.9 vs. 34.5 +/- 9.9%, p less than 0.005). The proportion of taurine-conjugated chenodeoxycholate in the sulfate fraction to the total bile acid was lower in intrahepatic cholestasis, compared with that in biliary atresia (7.7 +/- 7.5 vs 22.7% +/- 7.8%, p less than 0.005). The greater ratio of cholate to chenodeoxycholate and the reduced excretion of sulfated urinary bile acids in intrahepatic cholestasis was due to decreased taurine-conjugated chenodeoxycholate sulfate excretion.     

Type I biliary atresia without extrahepatic biliary cyst

Currently, magnetic resonance cholangiography (MRC) is used for the differentiation of biliary atresia (BA) from other causes of infantile cholestasis. The authors present a case of type I BA without an extrahepatic biliary cyst in a 2-month-old girl. MRC clearly visualized the patency of the gallbladder, cystic duct, and hepatic ducts with disappearance of the common bile duct. Intraoperative cholangiography demonstrated a cloudy appearance of the intrahepatic bile ducts, confirming the diagnosis of type I BA. We believe that this is the first reported case of type I BA without an extrahepatic biliary cyst diagnosed by MRC.     

Differentiation between extrahepatic and intrahepatic cholestasis by discriminant analysis

Discriminant analysis was used to differentiate between extrahepatic biliary atresia and intrahepatic cholestasis. Among the ten laboratory variables tested, three (gamma-glutamyl transpeptidase, alkaline phosphatase and total serum bilirubin) were useful in the differential diagnosis. gamma-Glutamyl transpeptidase contributed most to the discrimination (85%). From a population study of 28 babies with extrahepatic biliary atresia and 24 infants with intrahepatic cholestasis, the procedure achieved a diagnostic accuracy and specificity of 92.9% and an efficiency of 92.3%. The jackknife procedure has also confirmed that the mathematical model was robust for discriminant analysis and therefore it may be valid for screening infants with cholestasis for early surgical intervention. Discriminant analysis is a useful adjunct for differentiation between intrahepatic cholestasis and extrahepatic biliary atresia.     

Diagnostic utility of hepatobiliary scintigraphy with 99mTc-DISIDA in neonatal cholestasis

We retrospectively evaluated the utility of hepatobiliary scintigraphy and various clinical factors in differentiating intrahepatic cholestasis from biliary atresia in 28 consecutive infants with neonatal cholestasis. One millicurie of technetium-labeled diisopropyliminodiacetic acid (DISIDA) was administered intravenously, and images were obtained for up to 24 hours or until gastrointestinal excretion was noted. Nine separate studies in seven infants with biliary atresia were correctly interpreted as showing no gastrointestinal excretion of radionuclide. Of the 21 patients with intrahepatic cholestasis, only nine had gastrointestinal excretion on the first study; in eight without excretion, a second study was done, and five of these showed gut excretion. All infants with either neonatal hepatitis (six) or inspissated bile syndrome (three) had demonstrable gastrointestinal excretion either on the first or second DISIDA study. However, five of six infants with paucity of intrahepatic bile ducts, two of six infants with cholestasis secondary to total parenteral nutrition, and one infant with cholangiolitis did not show evidence of gastrointestinal excretion. The mean birth weight, mean gestational age, and mean weight at study were significantly greater (P less than 0.005) for infants with biliary atresia without excretion than for infants with intrahepatic cholestasis without excretion. The mean direct bilirubin concentration was 6.0 mg/dL for both infants with biliary atresia and infants with intrahepatic cholestasis without excretion; however, infants with excretion had a significantly lower (P less than 0.02) mean direct bilirubin value of 3.4 mg/dL. Excretion was noted in four infants with total bilirubin values greater than 10.0 mg/dL. The absence of gut excretion on the first DISIDA study was 100% sensitive but only 43% specific for biliary atresia. In infants without gut excretion of DISIDA, birth weight greater than 2200 g was 100% sensitive and 92% specific for biliary atresia. We conclude that DISIDA scanning, together with clinical data, is useful in differentiating extrahepatic from intrahepatic cholestasis. The absence of gut excretion on the first DISIDA study does not necessarily indicate extrahepatic obstruction; the study should be repeated if the diagnosis is not clear.     

Atypical morphologic presentation of biliary atresia and value of serial liver biopsies

BACKGROUND: Liver biopsy findings are important in diagnosing extrahepatic biliary atresia. Diffuse ductular proliferation is a characteristic finding. We describe four patients with conjugated hyperbilirubinemia in whom the initial liver biopsy findings showed a lack of ductular proliferation, despite subsequent development of biliary atresia. RESULTS: On initial biopsy, paucity of intrahepatic bile ducts was present in three of four patients, with a bile duct to portal space ratio of 0.3 to 0.4 (normal, 0.9-1.8). A normal bile duct to portal space ratio of 1.0 was observed in the fourth patient. Ductular proliferation became apparent in three subjects between 9 and 12 weeks of age, and biliary atresia was noted at the time of a Kasai portoenterostomy. The fourth child had well-developed biliary cirrhosis at liver transplantation. CONCLUSIONS: Changes characteristic of biliary atresia may appear even after 9 weeks of age. Bile duct paucity and normal bile duct to portal space ratio do not preclude the subsequent development of biliary atresia. Infants with unexplained conjugated hyperbilirubinemia and acholic stools should undergo sequential liver biopsies until clinical improvement occurs or until biliary atresia can be excluded from the differential diagnosis.