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https://www.readbyqxmd.com/read/28338651/dichotomy-in-intrahepatic-cholangiocarcinomas-based-on-histologic-similarities-to-hilar-cholangiocarcinomas
#1
Masayuki Akita, Kohei Fujikura, Tetsuo Ajiki, Takumi Fukumoto, Kyoko Otani, Takeshi Azuma, Tomoo Itoh, Yonson Ku, Yoh Zen
Intrahepatic cholangiocarcinomas were classified into two types based on their microscopic appearance. Tumors with histologic similarities to hilar cholangiocarcinomas (predominantly ductal adenocarcinomas with minor tubular components, if present, restricted to the invasive front) were defined as the perihilar type, whereas the others were classified as peripheral cholangiocarcinomas. Among the 47 cases examined in the present study, 26 (55%) were classified as the perihilar type, whereas 21 (45%) were the peripheral type...
March 24, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28337833/acute-cholangitis-current-concepts
#2
REVIEW
David Lan Cheong Wah, Christopher Christophi, Vijayaragavan Muralidharan
BACKGROUND: Acute cholangitis, also known as ascending cholangitis, is a life-threatening systemic condition that results from a biliary tree infection and obstruction. Severe acute cholangitis was reported to have a mortality rate between 11 and 27% in the 1990s. This article is a literature review about acute cholangitis. Its aim is to review the latest literature about acute cholangitis and to discuss its pathogenesis, clinical presentation, diagnosis, prognosis, risk factors and treatment...
March 24, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28337739/intraductal-neoplasms-of-the-bile-duct-a-new-challenge-to-biliary-tract-tumor-pathology
#3
REVIEW
Yasuni Nakanuma, Katsuhiko Uesaka, Shiro Miyayama, Hiroshi Yamaguchi, Masayuki Ohtsuka
Invasive biliary tract carcinomas are usually tubular adenocaricnomas with abundant desmoplastic reactions and frequent ductal and periductal invasion at the time of the diagnosis. Recently, several intraductal neoplasms of the bile duct, particularly at a pre-invasive stage, have been recognized. They include intraductal papillary neoplasm of the bile duct (IPNB), biliary intraepithelial neoplasm (BilIN), and others, such as intraductal tubulopapillary neoplasm (ITPN) of the bile duct. IPNBs are grossly visible predominantly intraductal-growing papillary neoplasms covered by well-differentiated neoplastic epithelium with fine fibrovascular cores in the dilated bile ducts...
March 24, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28337485/safety-and-efficacy-of-minimal-biliary-sphincterotomy-with-papillary-balloon-dilation-m-ebs-epbd-in-patients-using-clopidogrel-or-anticoagulation
#4
Shaffer R S Mok, Murtaza Arif, David L Diehl, Harshit S Khara, Henry C Ho, Adam B Elfant
Background and study aims Endoscopic retrograde cholangiopancreatography (ERCP) with endoscopic biliary sphincterotomy (EBS) or endoscopic papillary balloon dilation (EPBD) are common techniques of biliary decompression. Potential risks include gastrointestinal hemorrhage, which can be increased by antiplatelet agents, anticoagulants (AC) and/or novel oral anticoagulants (NOACs) (ie. apixaban, dabigatran and rivaroxaban). The study aim is to evaluate the safety/efficacy of an alternative technique, minimal-EBS plus EPBD (m-EBS + EPBD), in individuals for whom clopidogrel, AC, and/or NOACs cannot be interrupted due to high cardiovascular or thromboembolic risk...
March 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28337482/efficacy-and-safety-of-novel-digital-single-operator-peroral-cholangioscopy-guided-laser-lithotripsy-for-complicated-biliary-stones
#5
John Ct Wong, Raymond Sy Tang, Anthony Yb Teoh, Joseph Jy Sung, James Yw Lau
Background/study aims Laser lithotripsy can effectively fragment complicated biliary stones, but current cholangioscopes are limited by fragility, restricted mobility or moderate visual resolution. The efficacy and safety of a new digital single-operator peroral cholangioscope to guide laser lithotripsy were evaluated. Patients and methods In this prospective single-center series, consecutive patients with complicated biliary stones, defined as impacted stones > 1.5 cm in size and wider than the more distal common bile duct, or stones that failed extraction by basket mechanical lithotripsy, underwent ERCP and SpyGlass DS peroral cholangioscope (Boston Scientific, Marlborough, United States)-guided laser lithotripsy...
January 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28336501/extraordinary-biliary-variant
#6
Nuretdin Suna, Diğdem Özer Etik, Serkan Öcal, Haldun Selçuk, Fatih Hilmioğlu, Sedat Boyacıoğlu
No abstract text is available yet for this article.
March 23, 2017: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
https://www.readbyqxmd.com/read/28336111/hepatoprotective-effects-of-curcumin-in-rats-after-bile-duct-ligation-via-downregulation-of-rac1-and-nox1
#7
Zohreh-Al-Sadat Ghoreshi, Razieh Kabirifar, Fatemeh Safari, Alireza Karimollah, Ali Moradi, Ebrahim Eskandari-Nasab
OBJECTIVES: New evidence has proven the hepatoprotective activity of curcumin; however, its underlying mechanisms remain to be elucidated. The aim of this study was to investigate the protective effect of curcumin on hepatic damage by measuring the antioxidant capacity and expression level of Rho-related C3 botulinum toxin substrate (Rac1), Rac1-Guanosine triphosphate (Rac1-GTP), and NADPH oxidase 1(NOX1) in biliary duct-ligated (BDL)-fibrotic rat model. METHODS: Wistar rats weighing 200 to 250 g were divided into four groups (n = 8 for each): sham group, sham+Cur group (received curcumin 100 mg/kg daily), BDL+Cur group, and BDL group...
April 2017: Nutrition
https://www.readbyqxmd.com/read/28335859/making-it-new-again-insight-into-liver-development-regeneration-and-disease-from-zebrafish-research
#8
Shuang Wang, Sophie R Miller, Elke A Ober, Kirsten C Sadler
The adult liver of most vertebrates is predominantly comprised of hepatocytes. However, these cells must work in concert with biliary, stellate, vascular, and immune cells to accomplish the vast array of hepatic functions required for physiological homeostasis. Our understanding of liver development was accelerated as zebrafish emerged as an ideal vertebrate system to study embryogenesis. Through work in zebrafish and other models, it is now clear that the cells in the liver develop in a coordinated fashion during embryogenesis through a complex yet incompletely understood set of molecular guidelines...
2017: Current Topics in Developmental Biology
https://www.readbyqxmd.com/read/28335780/considerable-interobserver-variation-in-delineation-of-pancreatic-cancer-on-3dct-and-4dct-a-multi-institutional-study
#9
Eva Versteijne, Oliver J Gurney-Champion, Astrid van der Horst, Eelco Lens, M Willemijn Kolff, Jeroen Buijsen, Gati Ebrahimi, Karen J Neelis, Coen R N Rasch, Jaap Stoker, Marcel van Herk, Arjan Bel, Geertjan van Tienhoven
BACKGROUND: The delineation of pancreatic tumors on CT is challenging. In this study, we quantified the interobserver variation for pancreatic tumor delineation on 3DCT as well as on 4DCT. METHODS: Eight observers (radiation oncologists) from six institutions delineated pancreatic tumors of four patients with (borderline) resectable pancreatic cancer. The study consisted of two stages. In the 3DCT-stage, the gross tumor volume (GTV) was delineated on a contrast-enhanced scan...
March 23, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28335102/efficacy-of-a-multiplex-paclitaxel-emission-stent-using-a-pluronic-%C3%A2-mixture-membrane-versus-a-covered-metal-stent-in-malignant-biliary-obstruction-a-prospective-randomized-comparative-study
#10
Sung Ill Jang, Se Joon Lee, Seok Jeong, Don Haeng Lee, Myung-Hwan Kim, Hong Jin Yoon, Dong Ki Lee
Background/Aims: A drug-eluting stent for unresectable malignant biliary obstruction was developed to increase stent patency by preventing tumor ingrowth. The safety and efficacy of a new generation of metallic stents covered with a paclitaxel-incorporated membrane using a Pluronic(®) mixture (MSCPM-II) were compared prospectively with those of covered metal stents (CMSs) in patients with malignant biliary obstructions. Methods: This study was initially designed as a prospective randomized trial but was closed early because of a high incidence of early occlusion...
March 24, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28334490/mr-cholangiography-in-potential-liver-donors-quantitative-and-qualitative-improvement-with-administration-of-an-oral-effervescent-agent
#11
Heon-Ju Kwon, Kyoung Won Kim, Sang Hyun Choi, Jin-Hee Jung, So Yeon Kim, Se-Young Kim, Jeongjin Lee, Dong-Hwan Jung, Tae-Yong Ha, Gi-Won Song, Sung-Gyu Lee
PURPOSE: To determine whether an oral effervescent agent improves magnetic resonance cholangiography (MRC) images, both qualitatively and quantitatively, in potential live liver donors. MATERIALS AND METHODS: This retrospective study was approved by the Institutional Review Board, and informed consent was waived. Seventy potential liver donors underwent 2D MRC before and after administration of an oral effervescent agent. One radiologist measured relative contrast ratio (rC) and relative signal intensity (rS) for right and left intrahepatic ducts (RHD and LHD), and common hepatic duct (CHD)...
March 23, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28333915/directed-differentiation-of-human-induced-pluripotent-stem-cells-into-functional-cholangiocyte-like-cells
#12
Fotios Sampaziotis, Miguel Cardoso de Brito, Imbisaat Geti, Alessandro Bertero, Nicholas Rf Hannan, Ludovic Vallier
The difficulty in isolating and propagating functional primary cholangiocytes is a major limitation in the study of biliary disorders and the testing of novel therapeutic agents. To overcome this problem, we have developed a platform for the differentiation of human pluripotent stem cells (hPSCs) into functional cholangiocyte-like cells (CLCs). We have previously reported that our 26-d protocol closely recapitulates key stages of biliary development, starting with the differentiation of hPSCs into endoderm and subsequently into foregut progenitor (FP) cells, followed by the generation of hepatoblasts (HBs), cholangiocyte progenitors (CPs) expressing early biliary markers and mature CLCs displaying cholangiocyte functionality...
April 2017: Nature Protocols
https://www.readbyqxmd.com/read/28333690/diagnosis-and-evaluation-of-hyperbilirubinemia
#13
Jeremy I Sullivan, Don C Rockey
PURPOSE OF REVIEW: Jaundice, the physical finding associated with hyperbilirubinemia, results when the liver is unable to properly metabolize or excrete bilirubin. The purpose of this review is to examine some of the most common causes of jaundice in adults, provide insight into the diagnostic evaluation of jaundice, and review information on the outcomes of patients with jaundice. RECENT FINDINGS: An elevated level of bilirubin almost always indicates the presence of an underlying disease state...
March 22, 2017: Current Opinion in Gastroenterology
https://www.readbyqxmd.com/read/28333540/current-state-of-the-art-mri-for-comprehensive-evaluation-of-potential-living-liver-donors
#14
Kartik S Jhaveri, Lijun Guo, Luís Guimarães
OBJECTIVE: This review focuses on the role of state-of-the-art MRI-based techniques for comprehensive evaluation of living donors providing single-visit assessment of the liver vasculature via MR angiography, of the biliary tract via conventional T2-weighted MR cholangiography and T1-weighted gadoxetate disodium-enhanced MR cholangiography, and of hepatic steatosis via T2*-corrected multiecho chemical shift-based water-fat separation MRI and high-speed T2-corrected multiecho MR spectroscopy...
March 23, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28333129/protection-against-oxidative-stress-mediated-by-the-nrf2-keap1-axis-is-impaired-in-primary-biliary-cholangitis
#15
Urszula Wasik, Małgorzata Milkiewicz, Agnieszka Kempinska-Podhorodecka, Piotr Milkiewicz
In response to oxidative stress, nuclear factor (erythroid-derived 2)-like2 (Nrf2) induces expression of cytoprotective genes. The Nrf2 pathway is controlled by microRNAs and Kelch-like ECH-associated protein1 (Keap1). Nrf2 is stabilized when Keap1 is degraded through the autophagy pathway in a p62-dependent manner. The inhibition of autophagy causes protein accumulation, and Keap1 is inactivated by binding to p62. We investigated the role of the Nrf2/Keap1 axis in the amelioration of oxidative stress in primary biliary cholangitis (PBC)...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28332230/screening-and-identification-of-multiple-constituents-and-their-metabolites-of-zhi-zi-chi-decoction-in-rat-urine-and-bile-by-uplc-q-tof-ms-ms
#16
Wei Feng, Qiuju Dong, Minyan Liu, Si Li, Ting Liu, Xinguo Wang, Liying Niu
Zhi-zi-chi decoction (ZZCD) is a classical formula widely used in Chinese clinical application. In the present study, a novel and efficient strategy has been developed for screening and identification of multiple constituents and their metabolites of ZZCD using ultra high performance liquid chromatography combined with triple TOF mass spectrometry. The novel approach of an on-line data acquisition method dependent on multiple mass defect filter and dynamic background subtraction is combined with multiple data processing techniques...
March 23, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28332175/endoscopic-ultrasound-of-lemmel-s-syndrome
#17
Piyush Somani, Malay Sharma
Periampullary duodenal diverticula are common and are usually asymptomatic. However, complications like biliary or pancreatic obstruction, duodenal obstruction, perforation, or hemorrhage can occur occasionally. Obstructive jaundice is usually due to biliary stones and periampullary tumors. Rarely, duodenal diverticula may present with obstructive jaundice in the absence of cholelithiasis or other detectable obstacle. This condition is called Lemmel's syndrome. There are only few case reports of this rare condition...
March 23, 2017: Indian Journal of Gastroenterology: Official Journal of the Indian Society of Gastroenterology
https://www.readbyqxmd.com/read/28332100/expression-of-programmed-death-1-and-its-ligands-in-the-liver-of-biliary-atresia
#18
Pan-Liang Wang, Jun Wang, Ying Zhou, Xiao-Song Chen, Ke-Jun Zhou, Jie Wen, Jian-Jun Zhang, Wei Cai
BACKGROUND: An aberrant immune response is the predominant pathogenetic factor in biliary atresia (BA). Programmed death-1 (PD-1) and its two ligands, programmed death ligand-1 and programmed death ligand-2 (PD-L1 and PD-L2, respectively) play an important inhibitory role in immune reactions. We aimed to illustrate the expression of these molecules in BA. METHODS: Liver specimens were obtained from infants with BA during the Kasai procedure (early BA) and liver transplantation (late BA)...
March 22, 2017: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/28331877/hemobilia-due-to-cystic-artery-pseudoaneurysm-a-rare-late-complication-of-laparoscopic-cholecystectomy
#19
Ricardo Badillo, Michael D Darcy, Vladimir M Kushnir
We discuss a patient with late presentation of hemobilia following cholecystectomy, which is unusual because pseudoaneurysm caused by vascular injury during surgery typically presents soon after surgery. Endoscopic retrograde cholangiopancreatography revealed a large blood clot arising from the biliary orifice with subsequent computed tomography angiography diagnosing a large pseudoaneurysm in the region of the cystic artery adjacent to the cholecystectomy clips. Embolization was performed via direct percutaneous puncture of the pseudoaneurysm...
2017: ACG Case Reports Journal
https://www.readbyqxmd.com/read/28331844/a-single-institution-report-of-19-hepatocellular-carcinoma-patients-with-bile-duct-tumor-thrombus
#20
Anon Chotirosniramit, Akkaphod Liwattanakun, Worakitti Lapisatepun, Wasana Ko-Iam, Trichak Sandhu, Sunhawit Junrungsee
BACKGROUND: Obstructive jaundice caused due to bile duct tumor thrombus (BDTT) in a hepatocellular carcinoma (HCC) patient is an uncommon event. This study reports our clinical experiences and evaluates the outcomes of HCC patients with BDTT in a single institution. METHODS: A retrospective review of 19 HCC patients with secondary obstructive jaundice caused due to BDTT during a 15-year period was conducted. RESULTS: At the time of diagnosis, 14 (73...
2017: Journal of Hepatocellular Carcinoma
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