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https://www.readbyqxmd.com/read/28648950/mechanisms-of-cholangiocyte-responses-to-injury
#1
REVIEW
Keisaku Sato, Fanyin Meng, Thao Giang, Shannon Glaser, Gianfranco Alpini
Cholangiocytes, epithelial cells that line the biliary epithelium, are the primary target cells for cholangiopathies including primary sclerosing cholangitis and primary biliary cholangitis. Quiescent cholangiocytes respond to biliary damage and acquire an activated neuroendocrine phenotype to maintain the homeostasis of the liver. The typical response of cholangiocytes is proliferation leading to bile duct hyperplasia, which is a characteristic of cholestatic liver diseases. Current studies have identified various signaling pathways that are associated with cholangiocyte proliferation/loss and liver fibrosis in cholangiopathies using human samples and rodent models...
June 22, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28646120/mir-223-represents-a-biomarker-in-acute-and-chronic-liver-injury
#2
Florian Schueller, Sanchari Roy, Sven Heiko Loosen, Jan Alder, Christiane Koppe, Anne Theres Schneider, Franziska Wandrer, Heike Bantel, Mihael Vucur, Qing-Sheng Mi, Christian Trautwein, Tom Luedde, Christoph Roderburg
Background: Dysregulation of miRNAs has been described in tissue and serum from patients with acute and chronic liver diseases. However, only little information on the role of miR-223 in the pathophysiology of acute liver failure (ALF) and liver cirrhosis is available.  Methods: We analysed cell and tissue specific expression levels as well as serum concentrations of miR-223 in mouse models of acute (hepatic ischemia and reperfusion, single CCl4 injection) and chronic (repetitive CCl4 injection, bile duct ligation) liver diseases...
June 23, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28645247/the-correlation-between-poor-prognosis-and-increased-yes-associated-protein-1-expression-in-keratin-19-expressing-hepatocellular-carcinomas-and-cholangiocarcinomas
#3
KyuHo Lee, Kyoung-Bun Lee, Hae Yoen Jung, Nam-Joon Yi, Kwang-Woong Lee, Kyung-Suk Suh, Ja-June Jang
BACKGROUND: The Hippo pathway plays a vital role in liver regeneration and development by determining cellular lineage and regulating cell proliferation and apoptosis. In this study, we aimed to assess the role of the Hippo pathway in hepatic carcinogenesis and morphogenesis by examining Yes-associated protein 1 (YAP1) expression in the spectrum of hepatic carcinomas based on cellular lineage. METHODS: We examined 913 primary hepatic carcinomas, including hepatocellular carcinomas (HCCs), combined hepatocellular and cholangiocarcinomas (cHC-CCAs), intrahepatic cholangiocarcinomas (IHCCAs) and perihilar extrahepatic bile duct carcinomas (EHBCAs)...
June 23, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28643057/single-incision-laparoscopic-common-bile-duct-exploration-in-101-consecutive-patients-choledochotomy-transcystic-and-transfistulous-approaches
#4
Shu-Hung Chuang, Min-Chang Hung, Shih-Wei Huang, Dev-Aur Chou, Hurng-Sheng Wu
BACKGROUND: Laparoscopic surgery for choledocholithiasis is still evolving. Only a few reports of single-incision laparoscopic common bile duct exploration (LCBDE) have been published. METHODS: One hundred and one consecutive patients underwent single-incision LCBDE (SILCBDE) by one surgeon with straight instruments during a 42-month period. RESULTS: Choledochotomies were performed on 61 patients (60.4%). The success rate of intrahepatic duct exploration was 68...
June 22, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28642034/cyclooxygenase-2-promotes-pulmonary-intravascular-macrophage-accumulation-by-exacerbating-bmp-signaling-in-rat-experimental-hepatopulmonary-syndrome
#5
Chang Liu, Jing Gao, Bing Chen, Lin Chen, Karine Belguise, Weifeng Yu, Kaizhi Lu, Xiaobo Wang, Bin Yi
BACKGROUND AND AIMS: One central factor in hepatopulmonary syndrome (HPS) pathogenesis is intravascular accumulation of activated macrophages in small pulmonary arteries. However, molecular mechanism underlyingthe macrophage accumulation in HPS is unknown. In this study, we aimed to explore whether elevated COX-2 induces the Bone morphogenicprotein-2 (BMP-2)/Crossveinless-2(CV-2) imbalance and then activation of BMP signaling pathway promotes the macrophage accumulation in Common Bile Duct Ligation (CBDL) rat lung...
June 19, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28634394/the-roles-of-toll-like-receptor-4-in-the-pathogenesis-of-pathogen-associated-biliary-fibrosis-caused-by-clonorchis-sinensis
#6
Chao Yan, Bo Li, Fang Fan, Ying Du, Rui Ma, Xiao-Dan Cheng, Xiang-Yang Li, Bo Zhang, Qian Yu, Yu-Gang Wang, Ren-Xian Tang, Kui-Yang Zheng
Pathogen-associated biliary fibrosis (PABF) is a type of liver fibrosis characterized by injuries of cholangiocytes and extra cellular matrix (ECM) deposition around bile ducts caused by various bacteria, fungi, virus and parasites. Recent studies show that TLR4 plays an important role in several other types of liver fibrosis, but the mechanism of TLR4 in PABF is yet really unclear. In the present study, a PABF mouse model was established by a trematode infection-Clonorchis sinensis which dwells in the bile ducts and causes severe biliary fibrosis of mice...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28634212/prolonged-darkness-reduces-liver-fibrosis-in-a-mouse-model-of-primary-sclerosing-cholangitis-by-mir-200b-down-regulation
#7
Nan Wu, Fanyin Meng, Tianhao Zhou, Yuyan Han, Lindsey Kennedy, Julie Venter, Heather Francis, Sharon DeMorrow, Paolo Onori, Pietro Invernizzi, Francesca Bernuzzi, Romina Mancinelli, Eugenio Gaudio, Antonio Franchitto, Shannon Glaser, Gianfranco Alpini
Melatonin therapy or prolonged exposure to complete darkness reduces biliary hyperplasia and liver fibrosis in bile-duct-ligated (BDL) rats; however, no information exists in primary sclerosing cholangitis (PSC). Thus, we aimed to determine the therapeutic effects of prolonged dark therapy or melatonin administration on hepatic fibrosis in the Mdr2(-/-) mouse model of PSC. Melatonin levels, biliary mass, liver fibrosis, angiogenesis and miR-200b expression were evaluated in wild-type and Mdr2(-/-) mice exposed to darkness or melatonin treatment or in male PSC patient samples and healthy controls...
June 20, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28630953/distribution-of-acetylated-histone-4-in-normal-liver-and-acetaminophen-induced-liver-damage
#8
N Nakamura, Chang C-W, X Yang, Q Shi, W F Salminen, A Suzuki
To describe cell-specific acetylation of histones and their zonal localization in normal mouse liver and characterize their changes in acetaminophen (APAP)-damaged mouse liver 24 hr after APAP exposure, we performed an immunohistochemical study using normal and APAP-injured mouse livers. Cell-specific expression of acetylated H4 was observed in normal mouse liver. The highest acetylated H4 expression levels were found in bile duct epithelial cells, followed by sinusoidal non-parenchymal cells, venous endothelial cells, and hepatocytes...
2017: SM J Biol
https://www.readbyqxmd.com/read/28624624/claudin-18-coupled-with-egfr-erk-signaling-contributes-to-the-malignant-potentials-of-bile-duct-cancer
#9
Kumi Takasawa, Akira Takasawa, Makoto Osanai, Tomoyuki Aoyama, Yusuke Ono, Tsuyoshi Kono, Yoshihiko Hirohashi, Masaki Murata, Norimasa Sawada
Our recent work revealed that elevated expression of claudin-18 is involved in bile duct neoplasia. In the present study, we found that wound generation of a cell sheet de novo induced claudin-18 expression in its leading edge, coincident with high mitotic activity. We also found that the suppression of claudin-18 expression significantly reduced cell growth and invasiveness of bile duct cancer cell lines and tumorigenicity in vivo. In addition, an antibody specific to an extracellular loop of claudin-18 showed similar effects on the cells such as cell proliferation...
June 15, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28614225/immunoglobulin-g4-related-disease-preceded-by-lung-involvement-a-case-report
#10
Miki Abo, Hazuki Takato, Satoshi Watanabe, Kazumasa Kase, Tamami Sakai, Hayato Koba, Johsuke Hara, Takashi Sone, Hideharu Kimura, Kazuo Kasahara
RATIONALE: Immunoglobulin G4-related disease (IgG4-RD) is a systemic condition involving various organs and vessels including the pancreas, bile duct, salivary glands, periorbital tissues, kidneys, lungs, lymph nodes, meninges, and aorta. Recently, some cases of IgG4-RD have been reported, in which only pulmonary lesions were present. It is not known whether IgG4-RD can be diagnosed on the basis of pulmonary lesions only, because increases in serum IgG4 levels and infiltration of IgG4-positive plasma cells into the lung tissue also occur in other inflammatory conditions...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28599455/downregulation-of-nad-p-h-quinone-oxidoreductase-1-inhibits-proliferation-cell-cycle-and-migration-of-cholangiocarcinoma-cells
#11
Siriwoot Butsri, Veerapol Kukongviriyapan, Laddawan Senggunprai, Sarinya Kongpetch, Ponsilp Zeekpudsa, Auemduan Prawan
We previously reported that upregulation of NAD(P)H:quinone oxidoreductase 1 (NQO1) in cholangiocarcinoma (CCA; a fatal bile duct cancer) was associated with poor prognosis. It was also demonstrated that the suppression of NQO1 was able to enhance the chemosensitivity of CCA cells. In the present study, in order to elucidate the biological role of NQO1 in CCA, the effects of small interfering RNA (siRNA)-mediated knockdown of NQO1 on cell proliferation, cell cycle and migration were determined in KKU-100 CCA cells, which notably expressed NQO1...
June 2017: Oncology Letters
https://www.readbyqxmd.com/read/28596109/cytotherapy-with-m1-polarized-macrophages-ameliorates-liver-fibrosis-by-modulating-immune-microenvironment-in-mice
#12
Peng-Fei Ma, Chun-Chen Gao, Jing Yi, Jun-Long Zhao, Shi-Qian Liang, Yang Zhao, Yu-Chen Ye, Jian Bai, Qi-Jun Zheng, Ke-Feng Dou, Hua Han, Hong-Yan Qin
BACKGROUND & AIMS: Macrophages play vital roles in chronic liver injury, and have been tested as a tool for cytotherapy of liver fibrosis. However, macrophages possess ontogenic and functional heterogeneities. Some subsets are pro-fibrotic, whereas others are anti-fibrotic. This study aimed at clarifying which macrophage subset is efficient in cytotherapy of liver fibrosis and the underlying mechanisms. METHODS: Liver fibrosis was induced in mice by carbon tetrachloride (CCl4) injection or bile duct ligation (BDL)...
June 5, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28593410/xanthogranulomatous-cholecystitis-is-an-initial-laparoscopic-approach-feasible
#13
Jae Woo Park, Kee-Hwan Kim, Say-June Kim, Sang Kuon Lee
BACKGROUND: Xanthogranulomatous cholecystitis is an inflammatory disease with pathologically distinct characteristics such as accumulation of lipid-laden macrophages, fibrous tissue, and acute and chronic inflammatory cells. It often involves adjacent organs and mimics gallbladder cancer. The purpose of this study was to review the clinical findings of xanthogranulomatous cholecystitis and to determine the appropriate treatment plan. METHODS: We retrospectively analyzed clinical demographics, operation records, and postoperative results of 31 patients with a pathological diagnosis of xanthogranulomatous cholecystitis who underwent surgery between January 2010 and 2015 at two university hospitals...
June 7, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28591987/-notch-signaling-pathway-participates-in-the-differentiation-of-hepatic-progenitor-cells-into-bile-duct-epithelial-cells-and-progression-of-hepatic-fibrosis-in-cholestatic-liver-fibrosis-rat
#14
Y P Mu, X Zhang, Y Xu, W W Fan, X W Li, J M Chen, G F Chen, P Liu
Objective: To investigate differentiation direction of hepatic progenitor cells (HPCs) in cholestatic liver fibrosis (CLF), and the role of Notch signaling pathway in the differentiation of HPCs. Methods: A CLF rat model was established by bile duct ligation (BDL) followed by monitoring changes of Notch signal pathway and the cellular origin of proliferating cholangiocytes. After intraperitoneal injection of DAPT (a Notch signaling inhibitor) after bile duct ligation, the progress of liver fibrosis and the proliferation of cholangiocytes after inhibition of the Notch pathway were analyzed...
June 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28587082/natural-products-as-alternative-choices-for-p-glycoprotein-p-gp-inhibition
#15
REVIEW
Saikat Dewanjee, Tarun K Dua, Niloy Bhattacharjee, Anup Das, Moumita Gangopadhyay, Ritu Khanra, Swarnalata Joardar, Muhammad Riaz, Vincenzo De Feo, Muhammad Zia-Ul-Haq
Multidrug resistance (MDR) is regarded as one of the bottlenecks of successful clinical treatment for numerous chemotherapeutic agents. Multiple key regulators are alleged to be responsible for MDR and making the treatment regimens ineffective. In this review, we discuss MDR in relation to P-glycoprotein (P-gp) and its down-regulation by natural bioactive molecules. P-gp, a unique ATP-dependent membrane transport protein, is one of those key regulators which are present in the lining of the colon, endothelial cells of the blood brain barrier (BBB), bile duct, adrenal gland, kidney tubules, small intestine, pancreatic ducts and in many other tissues like heart, lungs, spleen, skeletal muscles, etc...
May 25, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28581486/the-hippo-signaling-functions-through-the-notch-signaling-to-regulate-intrahepatic-bile-duct-development-in-mammals
#16
Nan Wu, Quy Nguyen, Ying Wan, Tiaohao Zhou, Julie Venter, Gabriel A Frampton, Sharon DeMorrow, Duojia Pan, Fanyin Meng, Shannon Glaser, Gianfranco Alpini, Haibo Bai
The Hippo signaling pathway and the Notch signaling pathway are evolutionary conserved signaling cascades that have important roles in embryonic development of many organs. In murine liver, disruption of either pathway impairs intrahepatic bile duct development. Recent studies suggested that the Notch signaling receptor Notch2 is a direct transcriptional target of the Hippo signaling pathway effector YAP, and the Notch signaling is a major mediator of the Hippo signaling in maintaining biliary cell characteristics in adult mice...
June 5, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28574228/apkc-%C3%AE-p-sp1-snail-signaling-induces-epithelial-mesenchymal-transition-and-immunosuppression-in-cholangiocarcinoma
#17
Yawei Qian, Wei Yao, Tao Yang, Yan Yang, Yan Liu, Qi Shen, Jian Zhang, Weipeng Qi, Jianming Wang
Cholangiocarcinoma (CCA) is a highly malignant bile duct cancer that tends to invade and metastasize early. The epithelial-mesenchymal transition (EMT) has been implicated in cancer cell invasion and metastasis, as well as in cancer cell evasion of host immunity. In this study, we investigated the interaction between atypical protein kinase C-iota (aPKC-ι) and Snail in the regulation of EMT and its relationship to CCA immunosuppression. Our results demonstrated that aPKC-ι, Snail, and infiltrated immunosuppressive cells were significantly up-regulated in CCA tumor tissues and were linked to poor prognosis...
June 2, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28561948/identification-of-fucosylated-fetuin-a-as-a-potential-biomarker-for-cholangiocarcinoma
#18
Lucy Betesh, Mary Ann Comunale, Mengjun Wang, Hongyan Liang, Julie Hafner, Aykan Karabudak, Nasra H Giama, Catherine D Moser, Eiji Miyoshi, Lewis R Roberts, Timothy M Block, Anand Mehta
CLINICAL RELEVANCE: Cholangiocarcinoma is a cancer of bile duct cells for which no effective biomarker exists. Tumor masses are often not identifiable by imaging modalities as a result of the location of the tumor in the hilum of the liver or within the bile ducts. Because of the problems with obtaining a definitive tissue diagnosis, treatment and management decisions for patients with biliary strictures that may be malignant are difficult. The work presented here highlights the potential role of fucosylated fetuin-A as a biomarker of cholangiocarcinoma and may help in the early detection of this deadly cancer...
May 31, 2017: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/28560424/secretomic-profiling-of-cells-from-hollow-fiber-bioreactor-reveals-psma3-as-a-potential-cholangiocarcinoma-biomarker
#19
Chris Verathamjamras, Churat Weeraphan, Daranee Chokchaichamnankit, Kamolwan Watcharatanyatip, Pantipa Subhasitanont, Penchatr Diskul-Na-Ayudthaya, Kanokwan Mingkwan, Virat Luevisadpaibul, Somchai Chutipongtanate, Voraratt Champattanachai, Jisnuson Svasti, Chantragan Srisomsap
Cholangiocarcinoma (CCA), derived from the bile duct, occurs with a relatively high incidence in Northeast Thailand. Early diagnosis is still hampered by the lack of sufficient biomarkers. In recent years, biomarker discovery using secretomes has provided interesting results, including our studies on CCA secretomes, especially with three-dimensional cell cultures. Thus, cells cultured using the hollow fiber bioreactor (HFB) with 20 kDa molecular weight cut-off (MWCO) yielded higher quality and quantity of secretomes than those from conditioned media of the monolayer culture (MNC) system...
May 29, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28553849/effect-of-subchronic-intake-of-green-tea-extract-on-liver-of-albino-rat-histomorphometric-ultrastructural-and-biochemical-study
#20
Sherif Mohamed Zaki, Soheir Hanafi Ahmed, Walaa Mohamed Sayed, Ali Ahmed Ali
BACKGROUND: There are conflicting reports on the effect of Green tea extract (GTE) on the liver of animals. Some studies failed to show any adverse hepatic effects following administration of GTE to mice, rats, and dogs. Others reported severe hepatic necrosis, resulting in death; in female Swiss-Webster mice following its administration. The aim of the study was to study the subchronic toxicity of GTE on the liver of the adult male albino rats. MATERIAL AND METHODS: 40 male adult Wistar albino rats were used in the study...
May 29, 2017: Folia Morphologica (Warsz)
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