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Biliary injuries

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https://www.readbyqxmd.com/read/28225291/-a-contribution-to-the-differential-diagnostics-of-sclerosing-cholangitides
#1
Martin Blaho, Petr Dítě, Martina Bojková, Martin Rydlo, Tomáš Kupka, Pavel Svoboda, Pavel Klvaňa, Arnošt Martínek
Sclerosing cholangitides represent a group of chronic biliary obstructive diseases which include primary sclerosing cholangitis (PSC), IgG4 associated sclerosing cholangitis (IgG4-SC) and secondary sclerosing cholangitis (SSC). The manifestations of the diseases are similar, but their asymptomatic course is also frequent. IgG4-SC belongs to the group of IgG4 associated diseases and it is the most frequently related to type 1 autoimmune pancreatitis. Diagnosing of IgG4-SC is based on typical histopathological images, shape changes revealed by diagnostic imaging, serological tests, concurrent impairment of other organs and response to therapy, where IgG4-SC responds well to treatment with corticoids, whereas the only possibility for the remaining units is endoscopic intervention or liver transplantation...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28224425/mechanism-of-dynamic-near-infrared-fluorescence-cholangiography-of-extrahepatic-bile-ducts-and-applications-in-detecting-bile-duct-injuries-using-indocyanine-green-in-animal-models
#2
Yang Gao, Min Li, Zi-Fang Song, Le Cui, Bi-Rong Wang, Xiao-Ding Lou, Tao Zhou, Yong Zhang, Qi-Chang Zheng
Fluorescence intraoperative cholangiography (IOC) is a potential alternative for identifying anatomical variation and preventing iatrogenic bile duct injuries by using the near-infrared probe indocyanine green (ICG). However, the dynamic process and mechanism of fluorescence IOC have not been elucidated in previous publications. Herein, the optical properties of the complex of ICG and bile, dynamic fluorescence cholangiography and iatrogenic bile duct injuries were investigated. The emission spectrum of ICG in bile peaked at 844 nm and ICG had higher tissue penetration...
February 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28209258/biliary-tract-external-drainage-protects-against-multiple-organs-injuries-of-severe-acute-pancreatitis-rats-via-heme-oxygenase-1-upregulation
#3
Jin-Long Wang, Ying Chen, Xiao-Qing Song, Mei-Ling Lu, Bing Zhao, Li Ma, Er-Zhen Chen, En-Qiang Mao
OBJECTIVE: To investigate the effect of biliary tract external drainage (BTED) on severe acute pancreatitis (SAP) in rats and the relationship with heme oxygenase-1 (HO-1) pathway. METHODS: Thirty SD rats weighing 250-300 g were randomly assigned into five groups (n = 6): sham surgery (SS) group, SAP group, SAP + BTED group, SAP + zinc protoporphyrin IX (ZnPP) group, SAP + BTED + ZnPP group. The SAP model was induced via retrograde injection of 4% sodium taurocholate (1 mL/kg) into biliopancreatic duct through duodenal wall...
February 1, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28202577/nimesulide-and-4-hydroxynimesulide-as-bile-acid-transporters-inhibitors-are-contributory-factors-for-drug-induced-cholestasis
#4
Lei Zhou, Xiaoyan Pang, Jingfang Jiang, Dafang Zhong, Xiaoyan Chen
Nimesulide (NIM) is a classic nonsteroidal anti-inflammatory drug. However, some patients treated with NIM suffered from cholestatic liver injury. For this reason, we investigated the potential mechanism underlying NIM-induced cholestasis by using in vivo and in vitro models. Oral administration of 100 mg/kg/day NIM to Wistar rats for 5 days increased the levels of plasma total bile acids, alkaline phosphatase, alanine aminotransferase, and aspartate aminotransferase by 1.49-, 1.31-, 1.60-, and 1.29-fold, respectively...
February 15, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28197333/a-case-of-primary-biliary-cirrhosis-mimicking-acute-hepatitis-b-in-the-clinic-republic-of-korea
#5
Woo Hyuk Kwon, Hong Min Park, Jeong Jun Park, Sung Hoon Lee, Yong Kyu Lee
Primary biliary cirrhosis (PBC) is a slowly progressive cholestatic autoimmune liver disease characterized by progressive bile duct injury. The most common symptoms of this disease include fatigue and pruritus. The diagnosis of PBC is based on cholestatic biochemical liver tests, presence of antimitochondrial antibodies, and characteristic histological biopsy findings. We report a case of a patient with PBS, who was initially suspected to be in the window period of hepatitis B by a private doctor in a local clinic based on the detection of isolated immunoglobulin M antibody against hepatitis B core antigen...
January 2017: Korean Journal of Family Medicine
https://www.readbyqxmd.com/read/28187190/widespread-gli-expression-but-limited-canonical-hedgehog-signaling-restricted-to-the-ductular-reaction-in-human-chronic-liver-disease
#6
Candice Alexandra Grzelak, Nicholas David Sigglekow, Janina Elke Eleonore Tirnitz-Parker, Elizabeth Jane Hamson, Alessandra Warren, Bharvi Maneck, Jinbiao Chen, Bramilla Patkunanathan, Jade Boland, Robert Cheng, Nicholas Adam Shackel, Devanshi Seth, David Geoffrey Bowen, Luciano Gastón Martelotto, D Neil Watkins, Geoffrey William McCaughan
Canonical Hedgehog (Hh) signaling in vertebrate cells occurs following Smoothened activation/translocation into the primary cilia (Pc), followed by a GLI transcriptional response. Nonetheless, GLI activation can occur independently of the canonical Hh pathway. Using a murine model of liver injury, we previously identified the importance of canonical Hh signaling within the Pc+ liver progenitor cell (LPC) population and noted that SMO-independent, GLI-mediated signals were important in multiple Pc-ve GLI2+ intrahepatic populations...
2017: PloS One
https://www.readbyqxmd.com/read/28181704/evaluation-of-the-safety-of-endoscopic-radiofrequency-ablation-for-malignant-biliary-stricture-using-a-digital-peroral-cholangioscope-with-videos
#7
Takeshi Ogura, Saori Onda, Tastsushi Sano, Wataru Takagi, Astushi Okuda, Akira Miyano, Nobu Nishioka, Miyuki Imanishi, Mio Amano, Daisuke Masuda, Kazuhide Higuchi
OBJECTIVES: The clinical impact of catheter based radiofrequency ablation (RFA) under ERCP guidance has been recently reported, however severe adverse events have also been noted. If tumor is not present in the biliary tract, severe adverse events such as perforation or bleeding due to vessel injury around the biliary tract may occur. In addition, the effectiveness of RFA may not be sufficient based solely on radiographic guidance. The aim of this study was to evaluate the actual feasibility of intraductal RFA by peroral cholangioscope (POCS) evaluation before/after RFA...
February 9, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28163950/tacrolimus-toxicity-due-to-biliary-obstruction-in-a-combined-kidney-and-liver-transplant-recipient
#8
Samuel Chan, Michael T Burke, David W Johnson, Ross S Francis, David W Mudge
The immunosuppressant tacrolimus has a narrow therapeutic window, necessitating therapeutic drug monitoring to maintain efficacy and minimise toxicity. There are very few reports examining the impact of impaired biliary excretion on tacrolimus blood levels or toxicity. We report the case of a 26-year-old combined liver and kidney transplant recipient, who developed acute biliary obstruction leading to tacrolimus toxicity with very high blood tacrolimus levels. Despite a careful evaluation, no alternative cause was found for her acute kidney injury, and her kidney function returned to previous baseline within several days following treatment of the biliary obstruction and temporary withdrawal of tacrolimus...
2017: Case Reports in Transplantation
https://www.readbyqxmd.com/read/28160105/endoscopic-radiofrequency-ablation-of-the-pancreas
#9
REVIEW
Tarun Rustagi, Ankit Chhoda
Radiofrequency ablation (RFA) is a well-established technique to ablate dysplastic and neoplastic tissue via local thermal coagulative necrosis. Despite the widespread use in management of several cancers, the application of RFA in pancreas has been limited due to the increased risks of complications from the increased sensitivity of pancreatic tissue to thermal injury and proximity to vascular and biliary structures. RFA has been successfully used during laparotomy for locally advanced pancreatic carcinoma but requires an invasive approach...
February 3, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28160038/biliary-and-pancreatic-complications-of-molecular-targeted-therapies-in-cancer-imaging
#10
REVIEW
Francesco Alessandrino, Katherine M Krajewski, Sree Harsha Tirumani, Marta Braschi-Amirfarzan, Jyothi P Jagannathan, Nikhil H Ramaiya, Donald N Di Salvo
The purpose of this review is to familiarize radiologists with the different imaging manifestations of biliary and pancreatic toxicity of molecular targeted therapies. The advent of molecular targeted therapies for cancer treatment has prompted radiologists to be familiar with these new molecules, their patterns of response, and their class-specific toxicities. While liver and bowel toxicities have been extensively reported in literature, less is known about the pathogenesis and imaging of toxicity involving the pancreatobiliary system...
February 3, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28159300/attenuation-of-alpha-naphthylisothiocyanate-anit-induced-biliary-fibrosis-by-depletion-of-hepatic-macrophages-in-rats
#11
Hossain M Golbar, Takeshi Izawa, Alexandra Bondoc, Kavindra K Wijesundera, Anusha H Tennakoon, Mitsuru Kuwamura, Jyoji Yamate
Biliary fibrosis is a complex process in which macrophages and myofibroblasts may play central roles. We investigated biliary fibrosis lesions induced in the Glisson's sheath in rats by alpha-naphthylisothiocyanate (ANIT) administration under macrophage depletion. Hepatic macrophages were depleted in F344 rats with liposome-encapsulated clodronate (CLD) (10mL/kg body weight, i.v) followed by bile duct injury with ANIT (75mg/kg body weight, i.p) (ANIT+CLD group). Rats received empty-liposomes (Lipo) followed by ANIT, and served as control (ANIT+Lipo group)...
January 31, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28157201/longitudinal-in-vivo-bioimaging-of-hepatocyte-transcription-factor-activity-following-cholestatic-liver-injury-in-mice
#12
Juliette M K M Delhove, Suzanne M K Buckley, Dany P Perocheau, Rajvinder Karda, Patrick Arbuthnot, Neil C Henderson, Simon N Waddington, Tristan R McKay
Molecular mechanisms regulating liver repair following cholestatic injury remain largely unknown. We have combined a mouse model of acute cholestatic liver injury, partial bile duct ligation (pBDL), with a novel longitudinal bioimaging methodology to quantify transcription factor activity during hepatic injury and repair. We administered lentiviral transcription factor activated luciferase/eGFP reporter (TFAR) cassettes to neonatal mice enabling longitudinal TFAR profiling by continued bioimaging throughout the lives of the animals and following pBDL in adulthood...
February 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28145662/unsuspected-duplicated-gallbladder-in-a-patient-presenting-with-acute-cholecystitis
#13
Woohyung Lee, Dae Hyun Song, Jin Kwon Lee, Ji Ho Park, Ju Yeon Kim, Seung Jin Kwag, Taejin Park, Sang Ho Jeong, Young Tae Ju, Eun Jung Jung, Young Joon Lee, Soon Chan Hong, Sang Kyung Choi, Chi Young Jeong
Duplicated gallbladder (GB) is a rare congenital disease. Surgical management of a duplicated GB needs special care because of concurrent bile duct anomalies and the risk of injuring adjacent arteries during surgery. An 80-year-old man visited an emergency room with right upper quadrant abdominal pain. Computed tomography (CT) revealed cholecystitis with a 2-bodied GB. Because of this unusual finding, magnetic resonance choledochopancreatography was performed to detect possible biliary anomalies. The 2 GB bodies were unified at the neck with a common cystic duct, a so-called V-shaped duplicated GB...
March 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28134251/low-dose-acetaminophen-induces-early-disruption-of-cell-cell-tight-junctions-in-human-hepatic-cells-and-mouse-liver
#14
Wesam Gamal, Philipp Treskes, Kay Samuel, Gareth J Sullivan, Richard Siller, Vlastimil Srsen, Katie Morgan, Anna Bryans, Ada Kozlowska, Andreas Koulovasilopoulos, Ian Underwood, Stewart Smith, Jorge Del-Pozo, Sharon Moss, Alexandra Inés Thompson, Neil C Henderson, Peter C Hayes, John N Plevris, Pierre-Olivier Bagnaninchi, Leonard J Nelson
Dysfunction of cell-cell tight junction (TJ) adhesions is a major feature in the pathogenesis of various diseases. Liver TJs preserve cellular polarity by delimiting functional bile-canalicular structures, forming the blood-biliary barrier. In acetaminophen-hepatotoxicity, the mechanism by which tissue cohesion and polarity are affected remains unclear. Here, we demonstrate that acetaminophen, even at low-dose, disrupts the integrity of TJ and cell-matrix adhesions, with indicators of cellular stress with liver injury in the human hepatic HepaRG cell line, and primary hepatocytes...
January 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28133487/upregulation-of-pdzk1-by-calculus-bovis-sativus-may-play-an-important-role-in-restoring-biliary-transport-function-in-intrahepatic-cholestasis
#15
Dong Xiang, Tao Wu, Cheng-Yang Feng, Xi-Ping Li, Yan-Jiao Xu, Wen-Xi He, Kai Lei, Hong-Jiao Cai, Cheng-Liang Zhang, Dong Liu
Intrahepatic cholestasis is a main cause of hepatic accumulation of bile acids leading to liver injury, fibrosis, and liver failure. Our previous studies proved that Calculus Bovis Sativus (CBS) can restore biliary transport function through upregulating the multidrug resistance-associated protein 2 (MRP2) and breast cancer resistance protein (BCRP) in 17α-ethynylestradiol- (EE-) induced intrahepatic cholestasis rats. The regulation mechanism of CBS on these transporters, however, remains unclear. This study was designed to evaluate the possible relationship between the effect of CBS on transport activities and the regulation of CBS on the expression of PDZK1, a mainly scaffold protein which can regulate MRP2 and BCRP...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28129610/aberrant-subvesical-bile-ducts-identified-during-laparoscopic-cholecystectomy-a-rare-case-report-and-review-of-the-literature
#16
Theodoros Mariolis-Sapsakos, Maria Zarokosta, Menelaos Zoulamoglou, Theodoros Piperos, Ioannis Papapanagiotou, Markos Sgantzos, Konstantinos Birbas, Ioannis Kaklamanos
INTRODUCTION: Aberrant subvesical bile ducts are a scarce anatomical variation, consisted by a network of bile ducts located in the peri-hepatic capsule of the gallbladder fossa. These rare ducts are usually discovered intraoperatively and their presence poses the risk of bile injury and clinically significant bile leak. PRESENTATION OF CASE: Aberrant subvesical bile ducts were unexpectedly identified in a young woman during laparoscopic cholecystectomy. These three ducts were clipped carefully for avoidance of bile duct injury and subsequent bile leak...
January 16, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28127210/vanishing-bile-duct-syndrome-in-hodgkin-s-lymphoma-a-case-report-and-literature-review
#17
Mena Bakhit, Thomas R McCarty, Sunhee Park, Basile Njei, Margaret Cho, Raffi Karagozian, AnnMarie Liapakis
Vanishing bile duct syndrome (VBDS) has been described in different pathologic conditions including infection, ischemia, adverse drug reactions, autoimmune diseases, allograft rejection, and humoral factors associated with malignancy. It is an acquired condition characterized by progressive destruction and loss of the intra-hepatic bile ducts leading to cholestasis. Prognosis is variable and partially dependent upon the etiology of bile duct injury. Irreversible bile duct loss leads to significant ductopenia, biliary cirrhosis, liver failure, and death...
January 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28120369/bdl-induced-biliary-hyperplasia-hepatic-injury-and-fibrosis-are-reduced-in-mast-cell-deficient-kit-w-sh-mice
#18
Laura Hargrove, Lindsey Kennedy, Jennifer Demieville, Hannah Jones, Fanyin Meng, Sharon DeMorrow, Walker Karstens, Taronish Madeka, John Greene, Heather Francis
: Activated mast cells (MCs) release histamine (HA) and MCs infiltrate the liver following bile duct ligation (BDL) increasing intrahepatic bile duct mass (IBDM) and fibrosis. We evaluated the effects of BDL in MC deficient mice. METHODS: WT and Kit(W-sh) mice were subjected to sham or BDL for up to 7 days and Kit(W-sh) mice were injected with cultured mast cells or 1X PBS before collecting serum, liver blocks and cholangiocytes. Liver damage was assessed by H&E and ALT levels...
January 24, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28115651/trichloroethylene-exposure-reduces-liver-injury-in-a-mouse-model-of-primary-biliary-cholangitis
#19
Jessica L Ray, Anna K Kopec, Nikita Joshi, Holly Cline-Fedewa, Lawrence H Lash, Kurt J Williams, Patrick S Leung, M Eric Gershwin, James P Luyendyk
Trichloroethylene (TCE) is a persistent environmental contaminant proposed to contribute to autoimmune disease. Experimental studies in lupus-prone MRL(+/+) mice have suggested that TCE exposure can trigger autoimmune hepatitis. The vast majority of studies examining the connection between TCE and autoimmunity utilize this model, and the impact of TCE exposure in other established models of autoimmune liver disease is not known. We tested the hypothesis that TCE exposure exacerbates experimental hepatic autoimmunity in dominant negative transforming growth factor beta receptor type II (dnTGFBRII) mice, which develop serological and histological features resembling human primary biliary cholangitis...
January 23, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28104292/hepatic-prominin-1-expression-is-associated-with-biliary-fibrosis
#20
Marie V Nguyen, Jessica A Zagory, William H Dietz, Alex Park, Michael Fenlon, Menghan Zhao, Jiabo Xu, Ingrid Lua, Nirmala Mavila, Kinji Asahina, Kasper S Wang
BACKGROUND: Intrahepatic biliary fibrosis, as seen with cholestatic liver injuries such as biliary atresia, is mechanistically distinct from fibrosis caused by hepatocyte toxicity. We previously demonstrated the expansion of cells expressing the stem/progenitor cell marker Prominin-1, within regions of developing fibrosis in biliary atresia. Thus, we hypothesized that Prominin-1 expression is biliary fibrosis-specific. METHODS: Gene expression of Prominin-1 was analyzed in adult mice undergoing either cholestatic bile duct ligation or hepatotoxic carbon tetrachloride administration by quantitative polymerase chair reaction...
January 16, 2017: Surgery
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