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https://www.readbyqxmd.com/read/28934223/ursodeoxycholic-acid-prevents-ventricular-conduction-slowing-and-arrhythmia-by-restoring-t-type-calcium-current-in-fetuses-during-cholestasis
#1
Oladipupo Adeyemi, Anita Alvarez-Laviada, Francisca Schultz, Effendi Ibrahim, Michael Trauner, Catherine Williamson, Alexey V Glukhov, Julia Gorelik
BACKGROUND: Increased maternal serum bile acid concentrations in intrahepatic cholestasis of pregnancy (ICP) are associated with fetal cardiac arrhythmias. Ursodeoxycholic acid (UDCA) has been shown to demonstrate anti-arrhythmic properties via preventing ICP-associated cardiac conduction slowing and development of reentrant arrhythmias, although the cellular mechanism is still being elucidated. METHODS: High-resolution fluorescent optical mapping of electrical activity and electrocardiogram measurements were used to characterize effects of UDCA on one-day-old neonatal and adult female Langendorff-perfused rat hearts...
2017: PloS One
https://www.readbyqxmd.com/read/28926166/continuous-production-of-ursodeoxycholic-acid-using-two-cascade-reactors-with-coimmobilized-enzymes
#2
Ming-Min Zheng, Fei-Fei Chen, Hao Li, Chun-Xiu Li, Jian-He Xu
Ursodeoxycholic acid (UDCA) is an effective drug for the treatment of hepatitis. In this study, 7α-hydroxysteroid dehydrogenase (7α-HSDH) and lactate dehydrogenase (LDH), as well as 7β-HSDH and glucose dehydrogenase (GDH), were co-immobilized onto an epoxy-functionalized resin (ES-103) for catalyzing the synthesis of UDCA from chenodeoxycholic acid (CDCA). Through optimizing the immobilization pH, time and the loading ratio of enzymes to resin, the specific activities of immobilized LDH-7αHSDH@ES-103 and 7βHSDH-GDH@ES-103 were 43...
September 19, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28913620/a-brief-review-on-prognostic-models-of-primary-biliary-cholangitis
#3
REVIEW
Sha Chen, Weijia Duan, Hong You, Jidong Jia
Primary biliary cholangitis (PBC), previously known as primary biliary cirrhosis, is an autoimmune liver disease characterized by progressive destruction of small intrahepatic bile ducts. If left untreated, PBC may eventually result in end-stage liver disease. For better management of PBC and optimal allocation of medical resources, it is pivotal to accurately estimate the prognosis of patients with PBC. This article will briefly review the models that predict long-term outcome of PBC patients, with special focus on the applicability, strengths and limitations of the widely used models reported from 1983 to 2016...
September 14, 2017: Hepatology International
https://www.readbyqxmd.com/read/28889240/ursodeoxycholic-acid-in-the-prevention-of-gallstone-formation-after-bariatric-surgery-an-updated-systematic-review-and-meta-analysis
#4
REVIEW
Dimitrios E Magouliotis, Vasiliki S Tasiopoulou, Alexis A Svokos, Konstantina A Svokos, Christina Chatedaki, Eleni Sioka, Dimitris Zacharoulis
We aim to review the available literature on obese patients treated with ursodeoxycholic acid (UDCA) in order to prevent gallstone formation after bariatric surgery. A systematic literature search was performed in PubMed, Cochrane library, and Scopus databases, in accordance with the PRISMA guidelines. Eight studies met the inclusion criteria incorporating 1355 patients. Random-effects meta-analysis showed a lower incidence of gallstone formation in patients taking UDCA. Subgroup analysis reported fewer cases of gallstone disease in the UDCA group in relation to different bariatric procedures, doses of administered UDCA, and time from bariatric surgery...
September 9, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28860789/new-developments-in-the-treatment-of-primary-biliary-cholangitis-role-of-obeticholic-acid
#5
REVIEW
Manan A Jhaveri, Kris V Kowdley
Primary biliary cholangitis (PBC) is a chronic autoimmune cholestatic liver disease that predominantly affects women in early to middle age. It is typically associated with autoantibodies to mitochondrial antigens and results in immune-mediated destruction of small and medium-sized intrahepatic bile ducts leading to cholestasis, hepatic fibrosis and may progress to cirrhosis or hepatic failure and, in some cases, hepatocellular carcinoma. The clinical presentation and the natural history of PBC have improved over the years due to recognition of earlier widespread use of ursodeoxycholic acid (UDCA); about one-third of patients show suboptimal biochemical response to UDCA with poor prognosis...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28853202/ursodeoxycholic-acid-effects-on-hepatic-unfolded-protein-response-apoptosis-and-oxidative-stress-in-morbidly-obese-patients
#6
Michaela Mueller, Rui E Castro, Anders Thorell, Hanns-Ulrich Marschall, Nicole Auer, Merima Herac, Cecilia M P Rodrigues, Michael Trauner
BACKGROUND AND AIMS: Ursodeoxycholic acid (UDCA) is a secondary hydrophilic bile acid (BA) used as therapy for a range of hepatobiliary diseases. Its efficacy in non-alcoholic fatty liver disease (NAFLD) is still under debate. Here we aimed to decipher molecular mechanisms of UDCA in regulating endoplasmic reticulum (ER) homeostasis, apoptosis and oxidative stress in morbidly obese patients. METHODS: In this randomized controlled pharmacodynamic study, liver and serum samples from 40 well-matched morbidly obese NAFLD-patients were analyzed...
August 29, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28839882/primary-biliary-cholangitis-new-treatments-for-an-old-disease
#7
REVIEW
Hirsh D Trivedi, Blanca Lizaola, Elliot B Tapper, Alan Bonder
Primary biliary cholangitis (PBC) is an immunological condition that causes a significant health disturbance and dramatically reduces the quality of life for those affected with the disease. It is a potentially fatal disease that can lead to multiple hepatic and extrahepatic complications. Having adequate therapeutic interventions that can improve the course of the disease is imperative in reducing the associated morbidity and mortality. Ursodeoxycholic acid (UDCA) is the gold standard therapy. However, it has been associated with suboptimal response rates in a significant proportion of patients...
January 2017: Frontline Gastroenterology
https://www.readbyqxmd.com/read/28836457/investigational-drugs-in-phase-ii-clinical-trials-for-primary-biliary-cholangitis
#8
Marina G Silveira, Keith D Lindor
Primary biliary cholangitis (PBC) is a chronic cholestatic liver disease that may lead to biliary fibrosis, and eventually cirrhosis. The primary treatment for PBC is ursodeoxycholic acid (UDCA), which has favorably altered its natural history. However, up to 40% of patients have an inadequate response to UDCA, and are therefore at high risk of liver-related complications. Obeticholic acid has recently been approved for use in patients with PBC with inadequate response or who are intolerant to UDCA, but improvement in long-term outcomes has not yet been demonstrated...
October 2017: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/28825537/simultaneous-determination-of-ursodeoxycholic-acid-and-chenodeoxycholic-acid-in-pharmaceutical-dosage-form-by-hplc-uv-detection
#9
Mostafa A Khairy, Fotouh R Mansour
A reversed-phase HPLC method was developed for the simultaneous determination of ursodeoxycholic acid (UDCA) and the epimeric isomer, chenodeoxycholic acid (CDCA), in their synthetic mixtures and in tablet dosage form. The proposed HPLC method uses a C18 column and mobile phase consisting of an acetonitrile-phosphate buffer mixture (pH 2.3, 100 mM; 50 + 50, v/v) at a flow rate of 2.0 mL/min with UV detection at 210 nm. The method was validated according to the International Conference on Harmonization guidelines; and linearity, range, accuracy, precision, robustness, and system suitability were studied...
January 1, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28807157/antiinflammatory-and-hepatoprotective-medicinal-herbs-as-potential-substitutes-for-bear-bile
#10
Sandra Appiah, Mike Revitt, Huw Jones, Milan Vu, Monique Simmonds, Celia Bell
Practitioners of traditional Chinese medicine (TCM) commonly prescribe medicinal formulations relying on the purported synergism of a combination of plant species, sometimes incorporating animal parts and minerals. Bear bile, obtained from either wild or farmed bears, is a commonly used constituent of traditional medicine formulations. With several bear species now listed under Convention on International Trade in Endangered Species of Wild Fauna and Flora as threatened with extinction and with bear farming being actively campaigned against on ethical grounds, it is important to seek and promote alternatives to the use of bear bile as medicine...
2017: International Review of Neurobiology
https://www.readbyqxmd.com/read/28777871/the-functional-characteristics-ccni-modulation-of-myeloid-derived-suppressor-cells-in-liver-inflammation
#11
Haiyan Zhang, Min Lian, Jun Zhang, Zhaolian Bian, Ruqi Tang, Qi Miao, Yanshen Peng, Jingyuan Fang, Zhengrui You, Pietro Invernizzi, Qixia Wang, M Eric Gershwin, Xiong Ma
There is increasing awareness of the immunologic roles of liver mononuclear populations including myeloid-derived suppressor cells (MDSCs). We took advantage of a large well defined cohort of 148 patients with liver inflammation and 45 health controls to focus on the qualitative and quantitative characteristics of MDSCs. We investigated the frequency, phenotype and functional capacities of MDSCs using peripheral blood MDSCs in a cohort of 55 patients with PBC, 40 with AIH, 39 with CHB, 14 with NAFLD and 45 healthy controls, and thereafter a liver targeted determination in 27 PBC, 27 AIH, 20 CHB, 14 NAFLD and 6 controls...
August 4, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28756919/protective-effects-of-balanites-aegyptiaca-extract-melatonin-and-ursodeoxycholic-acid-against-hepatotoxicity-induced-by-methotrexate-in-male-rats
#12
Ayat O S Montasser, Hanan Saleh, Omar A Ahmed-Farid, Aida Saad, Mohamed-Assem S Marie
OBJECTIVE: To compare the degree of ameliorative effects of Melatonin (MEL), Ursodeoxycholic acid (UDCA) and Balanites aegyptiaca (BA) against hepatotoxicity induced by MTX for one month. METHODS: Eighty adult male rats (Sprague Dawely) weighing (190 ± 10 g), were randomly divided into eight equal groups: Control, MTX, MEL, BA, UDCA, MTX + MEL, MTX + BA, MTX + UDCA. Liver function biomarker enzymes, liver tissue oxidative stress parameters, together with total antioxidant capacity and tumor necrosis factor (TNF-α) were determined...
June 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28749455/primary-biliary-cholangitis-alters-functional-connections-of-the-brain-s-deep-gray-matter
#13
Victoria A L Mosher, Mark G Swain, Jack X Q Pang, Gilaad G Kaplan, Keith A Sharkey, Glenda M MacQueen, Bradley G Goodyear
OBJECTIVES: Fatigue, itch, depressed mood, and cognitive impairment significantly impact the quality of life of many patients with primary biliary cholangitis (PBC). Previous neuroimaging studies of non-hepatic diseases suggest that these symptoms are often associated with dysfunction of deep gray matter brain regions. We used resting-state functional magnetic resonance imaging (rsfMRI) to determine whether PBC patients exhibit altered functional connections of deep gray matter. METHODS: Twenty female non-cirrhotic PBC patients and 21 age/gender-matched controls underwent rsfMRI...
July 27, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28714405/emerging-targets-to-relieve-fat-stress-induced-liver-diseases-udca-tocotrienol-%C3%AF-3-pufas-and-igy-targeted-npc1l1-cholesterol-transporter
#14
Ji-Young Cha, Jong-Min Park, Ho-Jae Lee, Jin-Sik Bae, Young-Min Han, Byung-Chul Oh, Kwang Hyun Ko, Ki-Baik Hahm
Fat stress-induced liver disease is a hepatic manifestation of metabolic syndrome initiated by excess fat accumulation and encompasses a wide spectrum of diseases from non-alcoholic fatty liver disease to non-alcoholic steatohepatitis, a precursor lesion progressing to more aggressive liver cirrhosis and hepatocellular carcinoma. Although the incidence of these fat stress-induced liver diseases is rapidly increasing worldwide in parallel with the growing epidemics of obesity and metabolic diseases, its exact pathogenesis is not well defined...
July 14, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28708871/ursodeoxycholic-acid-inhibits-the-proliferation-of-colon-cancer-cells-by-regulating-oxidative-stress-and-cancer-stem-like-cell-growth
#15
Eun-Kyung Kim, Jae Hee Cho, EuiJoo Kim, Yoon Jae Kim
INTRODUCTION: The regulation of reactive oxygen species (ROS) exists as a therapeutic target for cancer treatments. Previous studies have shown that ursodeoxycholic acid (UDCA) suppresses the proliferation of colon cancer cells. The aim of this study was to evaluate the effect of UDCA upon the proliferation of colon cancer cells as a direct result of the regulation of ROS. METHOD: Colon cancer cell lines (HT29 and HCT116) were treated with UDCA. The total number of cells and the number of dead cells were determined using cell counters...
2017: PloS One
https://www.readbyqxmd.com/read/28676994/cimetidine-lactulose-therapy-ameliorates-erythropoietic-protoporphyria-related-liver-injury
#16
Naoyuki Fujimori, Michiharu Komatsu, Naoki Tanaka, Mai Iwaya, Hajime Nakano, Ayumi Sugiura, Tomoo Yamazaki, Soichiro Shibata, Yugo Iwaya, Takashi Muraki, Yuki Ichikawa, Takefumi Kimura, Satoru Joshita, Takeji Umemura, Akihiro Matsumoto, Eiji Tanaka
A 21-year-old Japanese man was admitted to our hospital because of severe abdominal pain and jaundice. He had been suffering from abdominal pain attacks and liver dysfunction since 18 years of age. Liver histology showed amorphous brown deposits in the sinusoidal space and significant periportal fibrosis without apparent hepatitis. Increased protoporphyrin in serum and feces and ferrochelatase gene mutation confirmed the final diagnosis of erythropoietic protoporphyria (EPP). Since ursodeoxycholic acid (UDCA) intake and glucose infusion are insufficient to ameliorate jaundice and abdominal attacks, cimetidine and lactulose were added in order to suppress hepatic delta-aminolevulinic acid synthase and limit re-absorption of protoporphyrin, respectively...
July 4, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28669591/primary-biliary-cholangitis-old-and-novel-therapy
#17
Annarosa Floreani, Chiara Mangini
Primary biliary cholangitis (PBC), formerly called primary biliary cirrhosis, is a chronic cholestatic liver disease that progresses slowly to end-stage liver disease. The first Food and Drug Administration (FDA)-approved treatment for PBC was ursodeoxycholic acid (UDCA). This treatment slows the progress of the disease, but approximatively 30-40% of patients fail to respond to UDCA. A number of options are under investigation as second line treatment. Obeticholic acid (OCA), a Farnesoid X Receptor agonist, has been approved in May 2017 by FDA for patients non responders or intolerant to UDCA...
June 29, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28665991/anti-inflammatory-effects-of-ursodeoxycholic-acid-by-lipopolysaccharide-stimulated-inflammatory-responses-in-raw-264-7-macrophages
#18
Wan-Kyu Ko, Soo-Hong Lee, Sung Jun Kim, Min-Jae Jo, Hemant Kumar, In-Bo Han, Seil Sohn
PURPOSE: The aim of this study was to investigate the anti-inflammatory effects of Ursodeoxycholic acid (UDCA) in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. METHODS: We induced an inflammatory process in RAW 264.7 macrophages using LPS. The anti-inflammatory effects of UDCA on LPS-stimulated RAW 264.7 macrophages were analyzed using nitric oxide (NO). Pro-inflammatory and anti-inflammatory cytokines were analyzed by quantitative real time polymerase chain reaction (qRT-PCR) and enzyme-linked immunosorbent assay (ELISA)...
2017: PloS One
https://www.readbyqxmd.com/read/28637315/attenuated-effects-of-bile-acids-on-glucose-metabolism-and-insulin-sensitivity-in-a-male-mouse-model-of-prenatal-undernutrition
#19
Huijuan Ma, Vicencia M Sales, Ashley R Wolf, Sathish Subramanian, Tucker J Matthews, Michael Chen, Aparna Sharma, Walt Gall, Wim Kulik, David E Cohen, Yusuke Adachi, Nicholas W Griffin, Jeffrey I Gordon, Mary-Elizabeth Patti, Elvira Isganaitis
Prenatal undernutrition and low birth weight are associated with risk of type 2 diabetes and obesity. Prenatal caloric restriction results in low birth weight, glucose intolerance, obesity, and reduced plasma bile acids (BAs) in offspring mice. Because BAs can regulate systemic metabolism and glucose homeostasis, we hypothesized that BA supplementation could prevent diet-induced obesity and glucose intolerance in this model of developmental programming. Pregnant dams were food restricted by 50% from gestational days 12...
August 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28602806/the-overall-fatty-acid-absorption-controlled-by-basolateral-chylomicron-excretion-under-regulation-of-p-jnk1
#20
Wolfgang Stremmel, Simone Staffer, Andreas Wannhoff, Anita Pathil
Suppression of fatty acid absorption is one goal to fight obesity. However, the responsible molecular mechanism is poorly understood. Aim of the present study was the search for the key regulator of the overall fatty acid absorption mechanism and its pharmaceutical modulation. As experimental tool we employed the polarized human intestinal tumor derived cell line CaCo2. Here we showed that influx of fatty acids is mediated by an apical heterotetrameric plasma membrane protein complex of which the calcium-independent membrane phospholipase A2 (iPLA2ß) is one constituent...
June 6, 2017: Biochimica et Biophysica Acta
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