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https://www.readbyqxmd.com/read/29624208/gemcitabine-based-chemotherapy-for-advanced-biliary-tract-carcinomas
#1
REVIEW
Omar Abdel-Rahman, Zeinab Elsayed, Hesham Elhalawani
BACKGROUND: Biliary tract cancers are a group of rare heterogeneous malignant tumours. They include intrahepatic and extrahepatic cholangiocarcinomas, gallbladder carcinomas, and ampullary carcinomas. Surgery remains the optimal modality of therapy leading to long-term survival for people diagnosed with resectable biliary tract carcinomas. Unfortunately, most people with biliary tract carcinomas are diagnosed with either unresectable locally-advanced or metastatic disease, and they are only suitable for palliative chemotherapy or supportive care...
April 6, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29617396/the-impact-of-depression-and-antidepressant-usage-on-primary-biliary-cholangitis-clinical-outcomes
#2
Abdel-Aziz Shaheen, Gilaad G Kaplan, Wagdi Almishri, Isabelle Vallerand, Alexandra D Frolkis, Scott Patten, Mark G Swain
BACKGROUND: Depression is prevalent in primary biliary cholangitis (PBC) patients. Our aims were to examine the effects of depression and antidepressants on hepatic outcomes of PBC patients. METHODS: We used the UK Health Improvement Network database to identify PBC patients between 1974 and 2007. Our primary outcome was one of three clinical events: decompensated cirrhosis, liver transplantation and death. We assessed depression and each class of antidepressant medication in adjusted multivariate Cox proportional hazards models to identify independent predictors of outcomes...
2018: PloS One
https://www.readbyqxmd.com/read/29615085/expression-patterns-of-stat3-erk-and-estrogen-receptor-%C3%AE-are-associated-with-development-and-histologic-severity-of-hepatic-steatosis-a-retrospective-study
#3
Euno Choi, Won Kim, Sae Kyung Joo, Sunyoung Park, Jeong Hwan Park, Yun Kyung Kang, So-Young Jin, Mee Soo Chang
BACKGROUND: Hepatic steatosis renders hepatocytes vulnerable to injury, resulting in the progression of preexisting liver disease. Previous animal and cell culture studies implicated mammalian target of rapamycin (mTOR), signal transducer and activator of transcription-3 (STAT3), extracellular signal-regulated kinase (ERK) and estrogen-receptor α in the pathogenesis of hepatic steatosis and disease progression. However, to date there have been few studies performed using human liver tissue to study hepatic steatosis...
April 3, 2018: Diagnostic Pathology
https://www.readbyqxmd.com/read/29599128/internal-biliary-drainage-superior-to-external-biliary-drainage-in-improving-gut-mucosa-barrier-because-of-goblet-cells-and-mucin-2-upregulation
#4
Xuechan Tang, Weiping Ma, Weirong Zhan, Xin Wang, Huan Dong, Hongjing Zhao, Lin Yang, Cuiying Ji, Qing Han, Chenguang Ji, Hongqun Liu, Na Wang
BACKGROUD: Obstructive jaundice increases intestinal permeability, but the pathological mechanisms remain obscure, which results in debates about the necessity of performing preoperative biliary drainage in patients with obstructive jaundice. Mucin-2 (MUC2) and goblet cells regulated by bile acids play an important role in maintaining the function of intestinal mucosal barrier. This study was to investigate the role of goblet cells and MUC2 in obstructive jaundice and evaluate the effect of biliary drainage on intestinal permeability...
March 29, 2018: Bioscience Reports
https://www.readbyqxmd.com/read/29593060/the-british-society-of-gastroenterology-uk-pbc-primary-biliary-cholangitis-treatment-and-management-guidelines
#5
Gideon M Hirschfield, Jessica K Dyson, Graeme J M Alexander, Michael H Chapman, Jane Collier, Stefan Hübscher, Imran Patanwala, Stephen P Pereira, Collette Thain, Douglas Thorburn, Dina Tiniakos, Martine Walmsley, George Webster, David E J Jones
Primary biliary cholangitis (formerly known as primary biliary cirrhosis, PBC) is an autoimmune liver disease in which a cycle of immune mediated biliary epithelial cell injury, cholestasis and progressive fibrosis can culminate over time in an end-stage biliary cirrhosis. Both genetic and environmental influences are presumed relevant to disease initiation. PBC is most prevalent in women and those over the age of 50, but a spectrum of disease is recognised in adult patients globally; male sex, younger age at onset (<45) and advanced disease at presentation are baseline predictors of poorer outcome...
March 28, 2018: Gut
https://www.readbyqxmd.com/read/29554146/evaluation-of-classical-and-novel-autoantibodies-for-the-diagnosis-of-primary-biliary-cholangitis-autoimmune-hepatitis-overlap-syndrome-pbc-aih-os
#6
Henry H Nguyen, Abdel Aziz Shaheen, Natalia Baeza, Ellina Lytvyak, Stefan J Urbanski, Andrew L Mason, Gary L Norman, Marvin J Fritzler, Mark G Swain
BACKGROUND AND AIMS: Up to 20% of Primary Biliary Cholangitis (PBC) patients are estimated to have features that overlap with Autoimmune Hepatitis (AIH). Patients with PBC-AIH overlap syndrome (PBC-AIH OS) have been reported to exhibit suboptimal responses to ursodeoxycholic acid therapy, and are more likely to progress to cirrhosis. Anti-double stranded DNA (anti-dsDNA) and anti-p53 have been previously suggested to be potential autoantibodies for identifying patients with PBC-AIH OS...
2018: PloS One
https://www.readbyqxmd.com/read/29543880/increased-risk-of-osteoporosis-in-patients-with-primary-biliary-cirrhosis
#7
Chen-Yi Liao, Chi-Hsiang Chung, Pauling Chu, Kuang-Yu Wei, Tseng-Min Feng, Fu-Huang Lin, Chang-Huei Tsao, Chia-Chao Wu, Wu-Chien Chien
BACKGROUND: We evaluated the risk of osteoporosis in patients with primary biliary cirrhosis (PBC) using a nationwide population-based dataset. METHODS: In a cohort study of 986,713 individuals, we selected 2,493 PBC patients who were aged 18 years or older and had been diagnosed with PBC, based on the International Classification of Disease (ICD-9-CM) codes 571.6, during 20002010. The control cohort comprised 9,972 randomly selected, propensity matched patients (by age, gender, and index date), without PBC...
2018: PloS One
https://www.readbyqxmd.com/read/29540861/an-impaired-biliary-bicarbonate-umbrella-may-be-involved-in-dysregulated-autophagy-in-primary-biliary-cholangitis
#8
Motoko Sasaki, Yasunori Sato, Yasuni Nakanuma
Dysregulated autophagy may be a central player in trehe pathogenesis of primary biliary cholangitis (PBC) by inducing autoimmune processes via abnormal expression of mitochondrial antigens such as pyruvate dehydrogenase complex, E2 component (PDC-E2) and also by inducing cellular senescence in biliary epithelial cells (BECs) in bile duct lesions in PBC. We examined the association of an impaired "biliary bicarbonate umbrella" due to dysfunction of anion exchanger 2 (AE2) with dysregulated autophagy and cellular senescence in PBC...
March 14, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29536837/-new-name-and-new-treatments-for-primary-biliary-cholangitits
#9
Lars Bossen, Henriette Ytting, Peter Jepsen, Ole Hamberg, Peter Ott, Henning Grønbæk
The name of chronic liver disease: primary biliary cirrhosis, has been changed to: primary biliary cholangitis, primarily because of the stigma associated with the word "cirrhosis", as only a minority of the patients develop cirrhosis. In this review we present data on epidemiology and discuss the current treatments with focus on ursodeoxycholic acid and the newly described effects of the farnesoid receptor agonist obeticholic acid.
March 5, 2018: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/29526309/primary-biliary-cholangitis
#10
REVIEW
Albert Parés
Primary cholangitis (cirrhosis) is a chronic cholestatic disease with an unquestionable female predominance. It is characterised by inflammation of the small and medium size bile ducts, and can eventually progress to cirrhosis. Most patients remain asymptomatic and are diagnosed by the casual finding of an anicteric biochemical cholestasis with increased alkaline phosphatase. The pathogenesis is unknown and of presumed autoimmune origin in genetic susceptible subjects. M2-type antimitochondrial antibodies, and specific antinuclear antibodies (gp210 and Sp100) are typical and specific of the disease...
March 8, 2018: Medicina Clínica
https://www.readbyqxmd.com/read/29521205/bile-acid-derivatives-from-old-molecules-to-a-new-potent-therapeutical-use-an-overview
#11
Marine Blanchet, Jean Michel Brunel
Bile acids or bile salts, belong to a large family of biological steroid derivatives found predominantly in the bile of mammals and other vertebrates. These amphipathic molecules possess numerous functions, including eliminating cholesterol from the body, driving the flow of bile to eliminate catabolites, emulsifying fat-soluble vitamins to enable their absorption, aiding in motility and in reducing the bacteria flora found in the small intestine and biliary tract. In this review, we investigate progress towards synthetic bile acid derivatives, with special emphasis on how they might be used for various biological applications and the challenges that remain in developing these compounds as potent drugs of the future especially in the field of microbiology (antimicrobial activities) and cancer (anticancer agents)...
March 8, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29520792/chemical-synthesis-of-rare-natural-bile-acids-11%C3%AE-hydroxy-derivatives-of-lithocholic-and-chenodeoxycholic-acids
#12
Kazunari Namegawa, Kyoko Iida, Kaoru Omura, Shoujiro Ogawa, Alan F Hofmann, Takashi Iida
A method for the preparation of 11α-hydroxy derivatives of lithocholic and chenodeoxycholic acids, recently discovered to be natural bile acids, is described. The principal reactions involved were (1) elimination of the 12α-mesyloxy group of the methyl esters of 3α-acetate-12α-mesylate and 3α,7α-diacetate-12α-mesylate derivatives of deoxycholic acid and cholic acid with potassium acetate/hexamethylphosphoramide; (2) simultaneous reduction/hydrolysis of the resulting △11 -3α-acetoxy and △11 -3α,7α-diacetoxy methyl esters with lithium aluminum hydride; (3) stereoselective 11α-hydroxylation of the △11 -3α,24-diol and △11 -3α,7α,24-triol intermediates with B2 H6 /tetrahydrofuran (THF); and (4) selective oxidation at C-24 of the resulting 3α,11α,24-triol and 3α,7α,11α,24-tetrol to the corresponding C-24 carboxylic acids with NaClO2 catalyzed by 2,2,6,6-tetramethylpiperidine 1-oxyl free radical (TEMPO) and NaClO...
March 9, 2018: Lipids
https://www.readbyqxmd.com/read/29507376/clinical-phenotype-and-molecular-analysis-of-a-homozygous-abcb11-mutation-responsible-for-progressive-infantile-cholestasis
#13
Kazuo Imagawa, Hisamitsu Hayashi, Yusuke Sabu, Ken Tanikawa, Jun Fujishiro, Daigo Kajikawa, Hiroki Wada, Toyoichiro Kudo, Masayoshi Kage, Hiroyuki Kusuhara, Ryo Sumazaki
The bile salt export pump (BSEP) plays an important role in biliary secretion. Mutations in ABCB11, the gene encoding BSEP, induce progressive familial intrahepatic cholestasis type 2 (PFIC2), which presents with severe jaundice and liver dysfunction. A less severe phenotype, called benign recurrent intrahepatic cholestasis type 2, is also known. About 200 missense mutations in ABCB11 have been reported. However, the phenotype-genotype correlation has not been clarified. Furthermore, the frequencies of ABCB11 mutations differ between Asian and European populations...
March 5, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29499107/differentiation-of-human-induced-pluripotent-stem-cell-under-flow-conditions-to-mature-hepatocytes-for-liver-tissue-engineering
#14
Viktoriia Starokozhko, Mette Hemmingsen, Layla Larsen, Soumyaranjan Mohanty, Marjolijn Merema, C Rodrigo Pimentel, Anders Wolff, Jenny Emnéus, Anders Aspegren, Geny Groothuis, Martin Dufva
Hepatic differentiation of hiPSCs under flow conditions in a 3D scaffold is expected to be a major step forward for construction of bioartificial livers. The aims of this study were to induce hepatic differentiation of hiPSCs under perfusion conditions and to perform functional comparisons with fresh human precision cut liver slices (hPCLS), an excellent benchmark for the human liver in vivo. The majority of the mRNA expression of CYP isoenzymes and transporters and the tested CYP activities, phase II metabolism, and albumin, urea and bile acid synthesis in the hiPSC derived cells reached values that overlap those of hPCLS, which indicates a higher degree of hepatic differentiation than observed until now...
March 2, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29487110/fxr-agonists-obeticholic-acid-and-chenodeoxycholic-acid-increase-bile-acid-efflux-in-sandwich-cultured-human-hepatocytes-functional-evidence-and-mechanisms
#15
Cen Guo, Carl LaCerte, Jeffrey E Edwards, Kenneth R Brouwer, Kim L R Brouwer
Farnesoid X Receptor (FXR) is a nuclear receptor that regulates genes involved in bile acid homeostasis. FXR agonists, obeticholic acid (OCA) and chenodeoxycholic acid (CDCA), increase mRNA expression of efflux transporters in sandwich-cultured human hepatocytes (SCHH). This study evaluated the effects of OCA and CDCA treatment on the uptake, basolateral efflux, and biliary excretion of a model bile acid, taurocholate (TCA), in SCHH. Additionally, changes in the protein expression of TCA uptake and efflux transporters were investigated...
February 27, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29473534/the-enriched-proanthocyanidin-extract-of-ligaria-cuneifolia-shows-a-marked-hypocholesterolemic-effect-in-rats-fed-with-cholesterol-enriched-diet
#16
Jose Enrique Gonzalvez, Gloria Garcia, Sebastian Galliano, Alicia Dominighini, Leda Urli, Juan Monti, Maria Teresa Ronco, Daniel Frances, Marcelo Wagner, Cristina Ester Carnovale, Alejandra Nora Luquita
BACKGROUND: Ligaria cuneifolia (Lc) (R. et P.) Tiegh. (Loranthaceae) (Argentine mistletoe) is usually used in local folk medicine. OBJECTIVE: We studied the effect of treatment with the Lc proanthocyanidin-enriched fraction (PLc) in rats fed with Cho-enriched diet on plasma Cho levels, the hemorheological parameters, and biliary secretion. METHOD: Adult male Wistar rats were fed ad libitum with a Cho-enriched diet (Cho (97% purity) 8 g/kg of diet and corn oil 280 g/kg of diet) during 28 days...
February 22, 2018: Recent Patents on Endocrine, Metabolic & Immune Drug Discovery
https://www.readbyqxmd.com/read/29465536/primary-cutaneous-amyloidosis-associated-with-autoimmune-hepatitis-primary-biliary-cirrhosis-overlap-syndrome-and-sj%C3%A3-gren-syndrome-a-case-report
#17
Xin Yan, Jinglan Jin
RATIONALE: Primary cutaneous amyloidosis (PCA) is a localized skin disorder characterized by the abnormal deposition of amyloid in the extracellular matrix of the dermis. The association between PCA and other diseases, although rare, has been documented for various autoimmune diseases. PCA associated with autoimmune hepatitis-primary biliary cirrhosis (AIH-PBC) overlap syndrome and Sjögren syndrome (SS) has not been previously reported in the literature. PATIENT CONCERNS: A 50-year-old woman presented with progressive abnormal liver enzyme levels and was referred to our department...
February 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29459807/-primary-biliary-cholangitis-part-1-state-of-the-art-epidemiology-physiopathology-and-clinical-manifestations
#18
Diego Andrés Rodríguez Lugo, Jorge Julián Coronado Tovar, Giovana Alejandra Solano Villamarin, Wiliam Otero Regino
Primary biliary cholangitis (PBC) is a chronic autoimmune cholangiopathy characterized by a selective destruction of biliary epithelial cells of small and medium caliber hepatic ducts, which mainly affects women. The main symptoms are fatigue and pruritus, however, a large proportion of patients may be asymptomatic. The diagnosis is based on AMA titers >1:40, alkaline phosphatase >1.5 times the upper limit for more than 24 weeks and compatible liver histology. It is associated with multiple autoimmune diseases mainly extrahepatic, thyroid diseases, bone diseases, among others...
October 2017: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
https://www.readbyqxmd.com/read/29458053/circulating-bile-acids-in-healthy-adults-respond-differently-to-a-dietary-pattern-characterized-by-whole-grains-legumes-and-fruits-and-vegetables-compared-to-a-diet-high-in-refined-grains-and-added-sugars-a-randomized-controlled-crossover-feeding-study
#19
Bigina N R Ginos, Sandi L Navarro, Yvonne Schwarz, Haiwei Gu, Dongfang Wang, Timothy W Randolph, Ali Shojaie, Meredith A J Hullar, Paul D Lampe, Mario Kratz, Marian L Neuhouser, Daniel Raftery, Johanna W Lampe
OBJECTIVE: The effects of diets high in refined grains on biliary and colonic bile acids have been investigated extensively. However, the effects of diets high in whole versus refined grains on circulating bile acids, which can influence glucose homeostasis and inflammation through activation of farnesoid X receptor (FXR) and G protein-coupled bile acid receptor 1 (TGR5), have not been studied. MATERIALS AND METHODS: We conducted a secondary analysis from a randomized controlled crossover feeding trial (NCT00622661) in 80 healthy adults (40 women/40 men, age 18-45 years) from the greater Seattle Area, half of which were normal weight (BMI 18...
February 16, 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29452137/aryl-hydrocarbon-receptor-ahr-mediated-short-term-effects-of-2-3-7-8-tetrachlorodibenzo-p-dioxin-tcdd-on-bile-acid-homeostasis-in-wild-type-and-ahr-null-mice
#20
Iván L Csanaky, Andrew J Lickteig, Curtis D Klaassen
The effects of the most potent aryl hydrocarbon receptor (AhR) agonist 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) on bile acid (BA) homeostasis was examined in male and female wild-type and AhR-null mice shortly after 4-day exposure, rather than at a later time when secondary non-AhR dependent effects are more likely to occur. TCDD had similar effects on BA homeostasis in male and female mice. TCDD decreased the concentration of total-(Σ) BAs in liver by approximately 50% (all major BA categories except for the non-6,12-OH BAs), without decreasing the expression of the rate limiting BA synthetic enzyme (Cyp7a1) or altering the major BA regulatory pathways (FXR) in liver and intestine...
February 13, 2018: Toxicology and Applied Pharmacology
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