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https://www.readbyqxmd.com/read/28431889/clinicopathologic-radiologic-and-molecular-study-of-23-combined-hepatocellular-cholangiocarcinomas-with-stem-cell-features-cholangiolocellular-type
#1
Jun Chen, Jian He, Min Deng, Hong-Yan Wu, Jiong Shi, Liang Mao, Qi Sun, Min Tang, Xiang-Shan Fan, Yu-Dong Qiu, Qin Huang
Cholangiolocellular carcinoma is a type of intrahepatic cholangiocarcinoma (ICC). According to the 2010 World Health Organization classification, this carcinoma is a combined hepatocellular-cholangiocarcinoma with stem cell features, cholangiolocellular type (CHC-SC-CLC). The aim of this study was to compare the clinicopathologic characteristics of CHC-SC-CLC and conventional ICC. Based on the gross and histologic characteristics, we divided consecutive ICC tumors into CHC-SC-CLC (n = 23), mass-forming (MF, n = 57), and non-MF (n = 22) groups...
April 18, 2017: Human Pathology
https://www.readbyqxmd.com/read/28430609/characterization-of-pressure-mediated-vascular-tone-in-resistance-arteries-from-bile-duct-ligated-rats
#2
Ravirajsinh N Jadeja, Menaka C Thounaojam, Sandeep Khurana
In cirrhosis, changes in pressure-mediated vascular tone, a key determinant of systemic vascular resistance (SVR), are unknown. To address this gap in knowledge, we assessed ex vivo dynamics of pressurized mesenteric resistance arteries (diameter ~ 260 μm) from bile duct-ligated (BDL) and sham-operated (SHAM) rats and determined the underlying mechanisms. At isobaric intraluminal pressure (70 mmHg) as well as with step-wise increase in pressure (10-110 mmHg), arteries from SHAM-rats constricted more than BDL-rats, and had reduced luminal area...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28429227/secretion-of-thioredoxin-peroxidase-protein-of-cat-liver-fluke-opisthorchis-felineus-during-modeling-of-experimental-opisthorchiasis
#3
V A Petrenko, M Yu Pakharukova, A V Kovner, M N L'vova, V V Lyakhovich, V A Mordvinov
Mechanisms of thioredoxin peroxidase secretion by Opisthorchis felineus were studied in vivo and in vitro. Specific antibodies were obtained and used for western blotting and immunohistochemical detection in Syrian hamster model of opisthorchiasis. Secreted thioredoxin peroxidase protein was accumulated in the worm incubation medium under conditions of oxidative stress and in bile duct cells of hamsters with chronic opisthorchiasis.
April 21, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28422840/case-report-a-female-case-of-isolated-igg4-related-sclerosing-cholangitis-mimicking-cholangiocarcinoma
#4
Jianchun Xiao, Guanqiao Li, Gang Yang, Congwei Jia, Binglu Li
RATIONALE: IgG4-related disease is a newly recognized fibroinflammatory disorder, characterized by tumefactive lesions, storiform fibrosis and IgG4-positive plasma cells infiltration. IgG4-related sclerosing cholangitis (IgG4-SC) is the most common extrapancreatic manifestation of IgG4-related disease, but it is frequently associated with autoimmune pancreatitis(AIP). Only few case was reported to be diagnosed with IgG4-SC in the absence of AIP, with a striking male preponderance. Here we report a female case of isolated IgG4 related sclerosing cholangitis mimicking cholangiocarcinoma...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28416441/glechoma-hederacea-extracts-attenuate-cholestatic-liver-injury-in-a-bile-duct-ligated-rat-model
#5
Ya-Yu Wang, Shih-Yi Lin, Wen-Ying Chen, Su-Lan Liao, Chih-Cheng Wu, Pin-Ho Pan, Su-Tze Chou, Chun-Jung Chen
ETHNOPHARMACOLOGICAL RELEVANCE: In traditional Chinese medicine, Glechoma hederacea is frequently prescribed to patients with cholelithiasis, dropsy, abscess, diabetes, inflammation, and jaundice. Polyphenolic compounds are main bioactive components of Glechoma hederacea. AIM OF THE STUDY: This study was aimed to investigate the hepatoprotective potential of hot water extract of Glechoma hederacea against cholestatic liver injury in rats. MATERIALS AND METHODS: Cholestatic liver injury was produced by ligating common bile ducts in Sprague-Dawley rats...
April 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28411396/the-usefulness-of-adding-p53-immunocytochemistry-to-bile-drainage-cytology-for-the-diagnosis-of-malignant-biliary-strictures
#6
Min-Kyung Yeo, Kyung-Hee Kim, Yong-Moon Lee, Byung Seok Lee, Song-Yi Choi
BACKGROUND: Obstructive jaundice is frequently caused by bile duct strictures. Determination of malignant strictures is crucial for the initiation of appropriate treatment. Cytologic examination of bile drainage fluid is an easy and reproducible method of detecting malignant cells. This method, however, frequently yields indeterminate results, such as atypia or suspicious of malignancy, due to difficulties in differentiating malignancy from benign atypia. Immunocytochemical assessment of p53 expression by cells in bile drainage fluid may enhance the ability to detect malignancy...
April 14, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28407375/h19-promotes-cholestatic-liver-fibrosis-by-preventing-zeb1-mediated-inhibition-of-epcam
#7
Yongfeng Song, Chune Liu, Xia Liu, Jocelyn Trottier, Michele Beaudoin, Li Zhang, Chad Pope, Guangyong Peng, Olivier Barbier, Xiaobo Zhong, Linheng Li, Li Wang
Based on our recent finding that disruption of bile acid (BA) homeostasis in mice results in the induction of hepatic lncRNA H19 expression, we sought to elucidate the role of H19 in cholestatic liver fibrosis. Hepatic overexpression of H19RNA augmented bile duct ligation (BDL)-induced liver fibrosis, which was accompanied by the elevation of serum ALT, AST, bilirubin, and BA levels. Multiple genes related to liver fibrosis, inflammation, and biliary hyperplasia were increased in H19-BDL vs Null-BDL mice, whereas genes in BA synthesis were decreased...
April 13, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28405078/bile-duct-lymphoma-disguised-as-cholangiocarcinoma
#8
Charis Durham, Deepna Jaiswal, Lucas Wong
We present a case of intrabiliary primary B-cell lymphoma masked as a cholangiocarcinoma in an HIV-positive patient. The two entities have similar symptoms, laboratory findings, and imaging findings but require very different treatments. The case highlights the need to confirm the diagnosis by biopsy.
April 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28396867/carvedilol-attenuates-the-progression-of-hepatic-fibrosis-induced-by-bile-duct-ligation
#9
Xiaopeng Tian, Chunhong Zhao, Jinbo Guo, Shurui Xie, Fengrong Yin, Xiaoxia Huo, Xiaolan Zhang
Background. The sympathetic nervous system (SNS) is responsible for hepatic stellate cells (HSCs) activation and the accumulation of collagen that occurs in hepatic fibrogenesis. Carvedilol has been widely used for the complication of hepatic cirrhosis in the clinic. Furthermore, it has powerful antioxidant properties. We assessed the potential antifibrotic effects of carvedilol and the underlying mechanisms that may further enhance its clinical benefits. Methods. Using a bile duct ligation rat model of hepatic fibrosis, we studied the effects of carvedilol on the fibrosis, collagen deposition, and oxidative stress based on histology, immunohistochemistry, western blot, and RT-PCR analyses...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28396555/heterotopic-pancreatic-tissue-associated-with-type-1-choledochal-cyst-cystolithiasis-and-gall-bladder-stones-a-rare-entity-with-review-of-literature
#10
Aditi Arora, Pradyumn Singh, Nidhi Anand, Nuzhat Husain
Choledochal cyst is a rare congenital malformation, particularly when associated with stones in cyst (cystolithiasis), gallstones and heterotopic pancreatic tissue within the cyst wall. The current case represents a 5-year-old boy with abdominal pain, pale colored stools, and jaundice. Magnetic resonance cholangiopancreatography showed a cystic lesion, arising from common bile duct with cystolithiasis and cholelithiasis. He underwent excision of choledochal cyst and gallbladder with Roux-en-Y hepaticojejunostomy...
April 10, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28391876/lipoprotein-x-in-cholestatic-patients-causes-xanthomas-and-promotes-foam-cell-formation-in-human-macrophages
#11
Luka Suzuki, Satoshi Hirayama, Mariko Fukui, Makoto Sasaki, Sadayuki Hiroi, Makoto Ayaori, Shuji Terai, Minoru Tozuka, Hirotaka Watada, Takashi Miida
BACKGROUND: Lipoprotein-X (Lp-X) is an abnormal phospholipid-rich lipoprotein found in patients with cholestatic liver disease. Some patients exhibit skin xanthomas and severe hyperlipidemia. OBJECTIVE: We investigated whether Lp-X induces foam cell formation in human-derived macrophages. METHODS: To compare the atherogenic properties of Lp-X and modified LDL, we isolated Lp-X from 2 patients who had drug-induced cholestasis and xanthoma striata in the interphalangeal folds...
January 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28390947/expression-patterns-of-nuclear-receptors-in-parenchymal-and-non-parenchymal-mouse-liver-cells-and-their-modulation-in-cholestasis
#12
Ester Gonzalez-Sanchez, Delphine Firrincieli, Chantal Housset, Nicolas Chignard
Nuclear receptors (NR), the largest family of transcription factors, control many physiological and pathological processes. To gain insight into hepatic NR and their potential as therapeutic targets in cholestatis, we determined their expression in individual cell types of the mouse liver in normal and cholestatic conditions. Hepatocytes, cholangiocytes, hepatic stellate cells (HSC), sinusoidal endothelial cells (SEC) and Kupffer cells (KC) were isolated from the liver of mice with acute or chronic cholestasis (i...
April 5, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28388653/expression-and-localization-of-sterile-alpha-motif-domain-containing-5-is-associated-with-cell-type-and-malignancy-of-biliary-tree
#13
Tomoki Yagai, Satoshi Matsui, Kenichi Harada, Fuyuki F Inagaki, Eiko Saijou, Yasushi Miura, Yasuni Nakanuma, Atsushi Miyajima, Minoru Tanaka
Cholangiocarcinoma (CC) is a type of relatively rare neoplasm in adenocarcinoma. The characteristics of CCs as well as biliary epithelial cells are heterogeneous at the different portion of the biliary tree. There are two candidate stem/progenitor cells of the biliary tree, i.e., biliary tree stem/progenitor cell (BTSC) at the peribiliary gland (PBG) of large bile ducts and liver stem/progenitor cell (LPC) at the canals of Hering of peripheral small bile duct. Although previous reports suggest that intrahepatic CC (ICC) can arise from such stem/progenitor cells, the characteristic difference between BTSC and LPC in pathological process needs further investigation, and the etiology of CC remains poorly understood...
2017: PloS One
https://www.readbyqxmd.com/read/28388535/upregulation-of-long-non-coding-rna-hoxa-as2-promotes-proliferation-and-induces-epithelial-mesenchymal-transition-in-gallbladder-carcinoma
#14
Peng Zhang, Peihua Cao, Xiaofeng Zhu, Mingxin Pan, Kebo Zhong, Rui He, Yang Li, Xingyuan Jiao, Yi Gao
Gallbladder carcinoma (GBC) is the most common malignancy of the bile duct and patients with GBC have extremely poor prognoses. Increasing evidence indicates that long non-coding RNAs (lncRNAs) regulate diverse cellular processes, including cell growth, differentiation, apoptosis, and cancer progression. However, the function of lncRNAs in the progression of GBC remains largely unknown. Here, we reported that HOXA cluster antisense RNA2 (HOXA-AS2) was upregulated in GBC. In vitro experiments revealed that HOXA-AS2 knockdown significantly inhibited GBC cells proliferation by causing G1 arrest and promoting apoptosis, whereas HOXA-AS2 overexpression promoted cell growth...
March 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28386338/pigment-epithelium-derived-factor-pedf-peptide-promotes-the-expansion-of-hepatic-stem-progenitor-cells-via-erk-and-stat3-dependent-signaling
#15
Shou-Chuan Shih, Tsung-Chuan Ho, Show-Li Chen, Yeou-Ping Tsao
Hepatic stem/progenitor cells (HPC) have been considered as a potential cell source of an alternative to liver transplantation. Production of large numbers of autologous HPC from small pieces of live tissue is crucial for the application of HPC-based liver therapy. In this study, we demonstrated that a synthetic 44-amino acid peptide (44-mer) derived from pigment epithelium-derived factor (PEDF) can facilitate the production of a large number of actively dividing HPC from normal adult rat livers in a 35-day culture period...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28385589/lymphocyte-responses-of-rats-vaccinated-with-cdna-encoding-a-phosphoglycerate-kinase-of-fasciola-hepatica-fhpgk-and-f-hepatica-infection
#16
Agnieszka Wesołowska, Anna Zawistowska-Deniziak, Luke J Norbury, Przemysław Wilkowski, Anna M Pyziel, Wojciech Zygner, Halina Wędrychowicz
Lymphocyte responses in the blood, peritoneal fluid and both mesenteric and hepatic lymph nodes of cDNA-FhPGK/pCMV vaccinated and/or Fasciola hepatica infected rats of both sexes were investigated to provide an insight into the immune responses that develop in different body compartments. The immune response that developed in cDNA-FhPGK/pCMV vaccinated females contributed to partial protection against F. hepatica infection (54% reduction in fluke recovery), while more liver flukes were found in the livers and bile ducts of cDNA-FhPGK/pCMV vaccinated male rats than in unvaccinated animals (increase of 13%)...
April 3, 2017: Parasitology International
https://www.readbyqxmd.com/read/28381173/mesothelin-targeting-chimeric-antigen-receptor-modified-t-cells-by-piggybac-transposon-system-suppress-the-growth-of-bile-duct-carcinoma
#17
Jie-Ying Xu, Zhen-Long Ye, Du-Qing Jiang, Jiang-Chuan He, Yong-Mei Ding, Lin-Fang Li, Sai-Qun Lv, Ying Wang, Hua-Jun Jin, Qi-Jun Qian
Chimeric antigen receptor modified T cell-based immunotherapy is revolutionizing the field of cancer treatment. However, its potential in treating bile duct carcinoma has not been fully explored. Herein, we developed the second-generation mesothelin-targeting chimeric antigen receptor-modified T cells with the 4-1BB co-stimulatory module by the piggyBac transposon system. Mesothelin-targeting chimeric antigen receptor was expressed by 66.0% of mesothelin-targeting chimeric antigen receptor-modified T cells post electrophoretic transfection and stimulation with K562-meso cells; the expressions of activation markers were tested by flow cytometry assay and showed greater activation of mesothelin-targeting chimeric antigen receptor-modified T cells than control T cells (CD107α: 71...
April 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28373632/primary-biliary-cholangitis-its-pathological-characteristics-and-immunopathological-mechanisms
#18
Koichi Tsuneyama, Hayato Baba, Yuki Morimoto, Takaaki Tsunematsu, Hirohisa Ogawa
Primary biliary cholangitis (PBC), formerly known as primary biliary cirrhosis, is an organ-specific autoimmune disease that predominantly affects middle-aged women and is characterized by the chronic progressive destruction of small intrahepatic bile ducts with portal inflammation and, ultimately, fibrosis. The serological hallmark of PBC is the presence of anti-mitochondrial autoantibodies (AMA). Several mechanisms have been proposed for immune-mediated bile duct damage in PBC, including the roles of T cells, B cells, other cell phenotypes, and AMA...
2017: Journal of Medical Investigation: JMI
https://www.readbyqxmd.com/read/28364316/a-case-of-annular-pancreas-with-wirsung-s-duct-encircling-the-duodenum-embryological-hypothesis-based-on-cholangiopancreatographic-and-immunohistochemical-findings
#19
Manami Fukai, Terumi Kamisawa, Shin-Ichirou Horiguchi, Tsunekazu Hishima, Sawako Kuruma, Kazuro Chiba, Satomi Koizumi, Taku Tabata, Sayaka Nagao, Masataka Kikuyama, Goro Honda, Masanao Kurata
We present a resected case of annular pancreas in which Wirsung's duct encircled the duodenum and continued directly to the main pancreatic duct in the body and tail. Furthermore, Wirsung's duct coursed along the right side of the lower bile duct near the major duodenal papilla. Histologically, the islets of Langerhans in the annular pancreas were irregular in shape and were characterized by a striking abundance of pancreatic polypeptide (PP)-positive cells. The PP-rich area that encircled the duodenum was fused with the PP-poor area in the head of the pancreas...
March 31, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28363269/establishing-a-large-animal-model-for-in-vivo-reprogramming-of-bile-duct-cells-into-insulin-secreting-cells-to-treat-diabetes
#20
Caitlin Marie Hill, Anannya Banga, Juan E Abrahante, Ce Yuan, Lucas A Mutch, Jody Janecek, Timothy O'Brien, Melanie L Graham, James Dutton
Type I diabetes manifests in autoimmune destruction of beta cells requiring metabolic management with an exogenous replacement source of insulin, either by repeated injection of recombinant insulin or by transplantation of allogenic islets from cadaveric donors. Both of these approaches have severe limitations. Repeated insulin injection requires intensive blood glucose monitoring, is expensive, and is associated with decreased quality of life measures. Islet transplant, while highly effective, is severely limited by shortage of donor organs...
March 31, 2017: Human Gene Therapy. Clinical Development
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