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Bile duct injury

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https://www.readbyqxmd.com/read/27922759/the-effects-of-hyperbaric-oxygen-treatment-on-total-antioxidant-capacity-and-prolidase-activity-after-bile-duct-ligation-in-rats
#1
Duygu Terzioglu, Lebriz Uslu, Gonul Simsek, Pinar Atukeren, Hayriye Erman, Remise Gelisgen, Suleyman Ayvaz, Burhan Aksu, Hafize Uzun
BACKGROUND: Hyperbaric oxygen (HBO) therapy may improve cholestasis, increase hepatic regeneration, and decrease oxidative stress in liver. In this study, we aimed to investigate the effects of HBO therapy on hepatic oxidative stress parameters, such as total thiol groups (T-SH), protein carbonyl (PCO), and total antioxidant capacity (TAC) as well as the predictive value of the noninvasive biochemical marker, sialic acid (SA), and prolidase activity in bile duct ligation (BDL)-induced oxidative damage and fibrosis in rats...
December 6, 2016: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/27913222/human-liver-regeneration-in-advanced-cirrhosis-is-organized-by-the-portal-tree
#2
Katalin Dezső, András Rókusz, Edina Bugyik, Armanda Szücs, András Szuák, Bence Dorogi, Mátyás Kiss, Ágnes Nemeskéri, Péter Nagy, Sándor Paku
BACKGROUND&AIMS: In advanced cirrhosis new hepatocytic nodules are generated by budding of ductules in areas of parenchymal extinction. However, the vascular alterations in the areas of parenchymal extinction, the blood supply and the structure of the new hepatocytic nodules have not been analyzed in detail. METHODS: Explanted human cirrhotic livers of three different etiologies and two experimental models of cirrhosis in rats were examined thoroughly. 3D reconstruction of the immunohistochemically stained serial sections and casting of human and experimental cirrhotic livers have been used to reveal the structural organization of the regenerative buds...
November 29, 2016: Journal of Hepatology
https://www.readbyqxmd.com/read/27911066/-conservative-management-of-liver-trauma-and-its-complications-current-gold-standard
#3
R Gander, J A Molino, S Santiago, A Laín, G Guillén, C Giné, G Royo, S López, M Pérez, I Díez, S Cañadas, J Lloret, J Bueno
INTRODUCTION: The liver is the second most frequently involved organ in abdominal trauma in children. The aim of this study was to review the characteristics of liver traumas (LT) in children, its treatment and complications. MATERIAL AND METHODS: Retrospective study of patients with LT treated between 2010-2014. We analyzed data regarding diagnosis, conservative management (CM), complications and treatment. RESULTS: Twenty-four patients of LT with a mean age of 9...
January 25, 2016: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
https://www.readbyqxmd.com/read/27904308/laparoscopic-transcystic-treatment-biliary-calculi-by-laser-lithotripsy
#4
Jun Liu, Lan Jin, Zhongtao Zhang
BACKGROUND AND OBJECTIVES: Laparoscopic transcystic common bile duct exploration (LTCBDE) is a complex procedure requiring expertise in laparoscopic and choledochoscopic skills. The purpose of this study was to investigate the safety and feasibility of treating biliary calculi through laparoscopic transcystic exploration of the CBD via an ultrathin choledochoscope combined with dual-frequency laser lithotripsy. METHODS: From August 2011 through September 2014, 89 patients at our hospital were treated for cholecystolithiasis with biliary calculi...
October 2016: JSLS: Journal of the Society of Laparoendoscopic Surgeons
https://www.readbyqxmd.com/read/27880979/low-dose-lipopolysaccharide-causes-biliary-injury-by-blood-biliary-barrier-impairment-in-a-rat-hepatic-ischemia-reperfusion-model
#5
J Reiling, K R Bridle, M Gijbels, F G Schaap, L Jaskowski, N Santrampurwala, L J Britton, C M Campbell, S W M Olde Damink, D H G Crawford, C H C Dejong, J Fawcett
INTRODUCTION: This study explored whether bacterial endotoxins, in the form of lipopolysaccharides (LPS), could have an injurious effect on the biliary tract in conjunction with ischemia. METHOD: Sixty-four rats were randomly assigned to four groups: sham operation (sham), 1mg/kg LPS i.p. (LPS), hepatic ischemia reperfusion (IR), and IR combined with LPS (IR+LPS). Following 1 or 6 hours of reperfusion, serum liver tests, bile duct histology, immunofluorescence microscopy (zonula occludens-1), bile composition (bile salts, phospholipids, lactate dehydrogenase), hepatic gene expression (bile salt transporters and inflammatory mediators) as well as serum and biliary cytokine concentrations were quantified and compared between the study groups...
November 23, 2016: Liver Transplantation
https://www.readbyqxmd.com/read/27872855/partial-portal-vein-arterialization-attenuates-acute-bile-duct-injury-induced-by-hepatic-dearterialization-in-a-rat-model
#6
Jun Jiang, Jishu Wei, Junli Wu, Wentao Gao, Qiang Li, Kuirong Jiang, Yi Miao
Hepatic infarcts or abscesses occur after hepatic artery interruption. We explored the mechanisms of hepatic deprivation-induced acute liver injury and determine whether partial portal vein arterialization attenuated this injury in rats. Male Sprague-Dawley rats underwent either complete hepatic arterial deprivation or partial portal vein arterialization, or both. Hepatic ischemia was evaluated using biochemical analysis, light microscopy, and transmission electron microscopy. Hepatic ATP levels, the expression of hypoxia- and inflammation-associated genes and proteins, and the expression of bile transporter genes were assessed...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27864114/lipopolysaccharide-promotes-tumorigenicity-of-hepatic-progenitor-cells-by-promoting-proliferation-and-blocking-normal-differentiation
#7
Xiao-Yong Li, Xue Yang, Qiu-Dong Zhao, Zhi-Peng Han, Lei Liang, Xiao-Rong Pan, Jing-Ni Zhu, Rong Li, Meng-Chao Wu, Li-Xin Wei
Hepatic progenitor cells (HPCs) are bipotential stem cells that can differentiate into mature hepatocytes or biliary epithelial cells (BECs). They are thought to be involved in repair of liver injury and the incidence of hepatic carcinoma. Their physiology is closely associated with the microenvironment where they reside. Lipopolysaccharide (LPS), an important component of the hepatic pathological microenvironment, is stored in the liver and affects many types of cells in various hepatosis. HPCs may also be influenced by LPS...
November 15, 2016: Cancer Letters
https://www.readbyqxmd.com/read/27847794/clinical-outcomes-of-subtotal-cholecystectomy-performed-for-difficult-cholecystectomy
#8
Minho Shin, Namkyu Choi, Youngsun Yoo, Yooseok Kim, Sungsoo Kim, Seongpyo Mun
PURPOSE: Laparoscopic subtotal cholecystectomy (LSC) can be an alternative surgical technique for difficult cholecystectomies. Surgeons performing LSC sometimes leave the posterior wall of the gallbladder (GB) to shorten the operation time and avoid liver injury. However, leaving the inflamed posterior GB wall is a major concern. In this study, we evaluated the clinical outcomes of standard laparoscopic cholecystectomy (SLC), LSC, and LSC removing only anterior wall of the GB (LSCA). METHODS: We retrospectively reviewed the medical records of laparoscopic cholecystectomies performed between January 2006 to December 2015 and analyzed the outcomes of SLC, LSC, and LSCA...
November 2016: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/27843664/minimally-invasive-treatment-of-mirizzi-syndrome-a-rare-cause-of-cholestasis-in-childhood
#9
Ahmet Ali Tuncer, Sezgin Yilmaz, Mustafa Yavuz, Salih Çetinkurşun
Mirizzi syndrome is the compressive blockage of the cystic or choledochal duct caused by a biliary stone occupying the cystic canal or Hartmann's pouch. This occurrence is rare and, in English literature, three cases defined in children have been observed. In order to draw attention to this rare occurrence, we preferred a 14-year-old male patient with Mirizzi syndrome. In this case, ERCP was performed preoperatively and the diagnosis was carried out with the help of clear visualisation and identification of the tissue structures as well as the stent placed in bile duct; so we protected the patient from the possible iatrogenic injury occurring during surgery...
2016: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/27834026/timing-of-cholecystectomy-following-endoscopic-sphincterotomy-a-population-based-study
#10
Brett D Mador, Avery B Nathens, Wei Xiong, O Neely M Panton, S Morad Hameed
BACKGROUND: Choledocholithiasis is commonly treated initially with endoscopic sphincterotomy, followed by cholecystectomy to definitively address the underlying problem of cholelithiasis. While the benefits of early cholecystectomy have been realized in other populations, the preferred timing for this subset of patients is less well established. We performed a large, population-based analysis to determine the frequency, benefits, and practice variance in regard to early cholecystectomy on a provincial level...
November 11, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27833383/antioxidant-and-anti-inflammatory-action-of-melatonin-in-an-experimental-model-of-secondary-biliary-cirrhosis-induced-by-bile-duct-ligation
#11
Josieli Raskopf Colares, Elizângela Gonçalves Schemitt, Renata Minuzzo Hartmann, Francielli Licks, Mariana do Couto Soares, Adriane Dal Bosco, Norma Possa Marroni
AIM: To evaluate the effects of melatonin (Mel) on oxidative stress in an experimental model of bile duct ligation (BDL). METHODS: Male Wistar rats (n = 32, weight ± 300 g) were allocated across four groups: CO (sham BDL), BDL (BDL surgery), CO + Mel (sham BDL and Mel administration) and BDL + Mel (BDL surgery and Mel administration). Mel was administered intraperitoneally for 2 wk, starting on postoperative day 15, at a dose of 20 mg/kg. RESULTS: Mel was effective at the different standards, reestablishing normal liver enzyme levels, reducing the hepatosomatic and splenosomatic indices, restoring lipoperoxidation and antioxidant enzyme concentrations, reducing fibrosis and inflammation, and thereby reducing liver tissue injury in the treated animals...
October 28, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27832041/investigation-of-liver-dysfunction-who-should-we-test-for-hepatitis-e
#12
Sebastian J Wallace, Glynn W Webb, Richie G Madden, Hugh C Dalton, Joanne Palmer, Richard T Dalton, Adam Pollard, Rhys Martin, Vasilis Panayi, Gwyn Bennett, Richard P Bendall, Harry R Dalton
AIM: Hepatitis E virus (HEV) is endemic in developed countries, but unrecognized infection is common. Many national guidelines now recommend HEV testing in patients with acute hepatitis irrespective of travel history. The biochemical definition of 'hepatitis' that best predicts HEV infection has not been established. This study aimed to determine parameters of liver biochemistry that should prompt testing for acute HEV. METHODS: This was a retrospective study of serial liver function tests (LFTs) in cases of acute HEV (n=74) and three comparator groups: common bile duct stones (CBD, n=87), drug-induced liver injury (DILI, n=69) and patients testing negative for HEV (n=530)...
November 9, 2016: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/27830546/thy-1-cd90-positive-hepatic-progenitor-cells-hepatoctyes-and-non-parenchymal-liver-cells-isolated-from-human-livers
#13
Thomas S Weiss, Rania Dayoub
In response to liver injury, hepatic cells, especially hepatocytes, can rapidly proliferate to repair liver damage. Additionally, it was shown that under certain circumstances liver resident cells with progenitor capabilities are involved in liver cell proliferation and differentiation. These hepatic progenitor cells (HPCs), known as oval cells in rodents, are derived from the canals of Hering, which are located in the periportal region of the liver. Regarding to different cell niches, which were defined for human HPCs, several markers have been used to identify these cells such as CD34, c-kit, OV-6, and Thy-1 (CD90)...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27826954/critical-and-diverse-in-vivo-roles-of-apoptosis-signal-regulating-kinase-1-in-animal-models-of-atherosclerosis-and-cholestatic-liver-injury
#14
REVIEW
Sohsuke Yamada, Hirotsugu Noguchi, Akihide Tanimoto
Apoptosis plays pivotal in vivo roles in not only vital processes, such as cell turnover and embryonic development, but also various inflammatory disorders. However, the role of apoptosis by vascular and hepatic cells in the respective progression of atherosclerosis and liver injury remains controversial. Apoptosis signal-regulating kinase 1 (ASK1) is a mitogen-activated protein kinase kinase kinase family member that is activated through distinct mechanisms in response to various cytotoxic stressors. ASK1, ubiquitously expressed, is situated in an important upstream position for many signal transduction pathways, which subsequently induce inflammation and/or apoptosis...
November 9, 2016: Histology and Histopathology
https://www.readbyqxmd.com/read/27825164/effect-of-neutrophils-on-gallbladder-interstitial-cajal-like-cells-in-guinea-pig-model-of-acute-cholecystitis
#15
Zhen-Peng Huang, Hu Qiu, Yan Yang, Bao-Ping Yu
BACKGROUND: Acute cholecystitis is a common condition in gallbladder motility disorder. Interstitial Cajal-like cells (ICLCs) in the gallbladder are known as one of the players in the complex motility mechanisms affecting gallbladder motility. AIM: This study explored morphological symptoms and molecular mechanisms underlying gallbladder ICLC changes induced by acute cholecystitis. MATERIALS AND METHODS: Fifteen adult guinea pigs were randomly divided into 3 groups: sham-operated group (healthy controls) and 2 experimental groups wherein these guinea pigs were subjected to common bile duct ligation to induce acute cholecystitis...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27822387/cystic-artery-morphological-study-and-surgical-significance
#16
Usha Dandekar, Kundankumar Dandekar
The cystic artery is the key structure sought to be clipped or ligated during laparoscopic or conventional cholecystectomy. The possible complications like hemorrhage or hepatobiliary injury are always centered on the search, dissection, and clipping or ligation of the cystic artery, many a time because of possibility of variations in its course and relations to the biliary ducts. This descriptive study was carried out to document the normal anatomy and different variations of the cystic artery to contribute to improve surgical safety...
2016: Anatomy Research International
https://www.readbyqxmd.com/read/27819646/from-laparoscopic-cholecystectomy-to-liver-transplantation-when-the-gallbladder-becomes-the-pandora-s-box
#17
Georgios C Sotiropoulos, Peter Tsaparas, Stylianos Kykalos, Nikolaos Machairas, Ernesto P Molmenti, Andreas Paul
Bile duct injuries (BDI) tend to be more complex in laparoscopic than in open cholecystectomy procedures, and frequently involve young adults with benign pathologies. The ultimate consequence may be a liver transplantation (LT), making this situation one of the most rare transplant indications. Fatal post-transplant outcome is extreme infrequently reported. Aim of this study is to report on our single-case experience and to review the literature concerning lethal outcome after LT for major BDI following cholecystectomy...
2016: Chirurgia
https://www.readbyqxmd.com/read/27809748/preventative-effect-of-vitamin-e-on-mast-cells-in-carbon-tetrachloride-induced-acute-liver-damage
#18
Ayhan Eralp, Nur Yumusak Menguc, Elif Polat, Mehmet Yuncu, Mehmet Koruk, Serap Sergul Inaloz Demir, İbrahim Sarı
Preventing liver damage that might lead to cirrhosis is very important in the early stages of injury to that organ. The role of mast cells (MCs) in liver injuries has been long debated, and vitamin E is a well-known antioxidant used to treat those injuries. This study aimed to determine the protective role of vitamin E on MCs in injury to the liver that is triggered by carbon tetrachloride (CCl4). There is a correlation between MC deposits and improvement in fibrosis tissues. To further examine this, 68 male Albino Wistar rats were divided randomly into five groups: the control group, the vitamin E group, the CCl4 group, the CCl4 + vitamin E group, and the vitamin E + CCl4 group...
October 29, 2016: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/27804044/tokyo-guidelines-2013-may-be-too-restrictive-and-patients-with-moderate-and-severe-acute-cholecystitis-can-be-managed-by-early-cholecystectomy-too
#19
Vinoban Amirthalingam, Jee Keem Low, Winston Woon, Vishalkumar Shelat
OBJECTIVE: The aim of this study was to determine whether early laparoscopic cholecystectomy (LC) is safe and feasible for patients diagnosed with moderate (grade 2) and severe (grade 3) acute cholecystitis (AC) according to the Tokyo Guidelines 2013 (TG13). BACKGROUND: Early cholecystectomy is the current accepted standard of care for patients with mild (grade 1) and selected grade 2 AC based on TG13. For selected grade 2 and grade 3 AC, early percutaneous cholecystostomy (PC) followed by delayed cholecystectomy is recommended...
November 1, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27780576/bile-cast-nephropathy-caused-by-obstructive-cholestasis
#20
Julien Aniort, Anaïs Poyet, Jean-Louis Kemeny, Carole Philipponnet, Anne-Elisabeth Heng
Acute kidney injury (AKI) is a major complication in patients with liver disease. Although hepatorenal syndrome is frequently involved, bile cast nephropathy, characterized by tubular bile cast formation, has been scarcely described in the setting of severe liver failure. Few renal histology studies are available in these patients. We describe a case of bile cast nephropathy in a patient with obstructive cholestasis caused by stones in the common bile duct. The kidney biopsy confirmed this diagnosis, with several green casts in tubular lumens, tubular injury, and bilirubin composition of the tubular casts with Hall stain...
October 22, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
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