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Ursodeoxycholic acid

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https://www.readbyqxmd.com/read/28219198/-effects-and-mechanisms-of-ursodeoxycholic-acid-on-isoprenaline-induced-myocardial-fibrosis-in-mice
#1
X Li, K Q Han, Y N Shi, S Z Men, S Li, M H Sun, H Dong, J J Lu, L J Ma, M Zhao, D Li, W Liu
Objective: To investigate the effects and possible mechanisms of ursodeoxycholic acid (UDCA) on myocardial fibrosis in mice. Method: To observe the expression of transforming growth factor(TGF) -β1, CTGF, MMPs and the degree of myocardial fibrosis, 61 male Kunming mice were randomly divided into normal group, low dose UDCA group, high dose of UDCA group, spironolactone group, and the control group.Isoproterenol (ISO) injection was given subcutaneously (30 d) to make the model of myocardial fibrosis.Corresponding anti-fibrosis drugs (UDCA or spironolactone) were given by gavage...
February 7, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28219122/immunoserological-and-histological-differences-between-autoimmune-hepatitis-with-acute-presentation-and-chronic-autoimmune-hepatitis
#2
Kazufumi Dohmen, Hirofumi Tanaka, Masatora Haruno, Shinichi Aishima
BACKGROUND/AIMS: While the histological features in clinically chronic autoimmune hepatitis (AIH) have been well established, with interface hepatitis and plasma cell infiltration as hallmark lesions, the immunoserological and histological features of recent-onset and acute AIH remain undefined. The goal of this study was to define the immunoserological and histological differences between AIH with acute presentation and chronic AIH. METHODS: Thirty-two consecutive patients with well-characterized AIH who had undergone a liver biopsy were identified at our institution...
February 20, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28213609/gut-microbial-profile-is-altered-in-primary-biliary-cholangitis-and-partially-restored-after-udca-therapy
#3
Ruqi Tang, Yiran Wei, Yanmei Li, Weihua Chen, Haoyan Chen, Qixia Wang, Fan Yang, Qi Miao, Xiao Xiao, Haiyan Zhang, Min Lian, Xiang Jiang, Jun Zhang, Qin Cao, Zhuping Fan, Maoying Wu, Dekai Qiu, Jing-Yuan Fang, Aftab Ansari, M Eric Gershwin, Xiong Ma
OBJECTIVE: A close relationship between gut microbiota and some chronic liver disorders has recently been described. Herein, we systematically performed a comparative analysis of the gut microbiome in primary biliary cholangitis (PBC) and healthy controls. DESIGN: We first conducted a cross-sectional study of 60 ursodeoxycholic acid (UDCA) treatment-naïve patients with PBC and 80 matched healthy controls. Second, an independent cohort composed of 19 treatment-naïve patients and 34 controls was used to validate the results...
February 17, 2017: Gut
https://www.readbyqxmd.com/read/28202805/chenodeoxycholic-acid-stimulates-glucagon-like-peptide-1-secretion-in-patients-after-roux-en-y-gastric-bypass
#4
Signe Nielsen, Maria S Svane, Rune E Kuhre, Trine R Clausen, Viggo B Kristiansen, Jens F Rehfeld, Jens J Holst, Sten Madsbad, Kirstine N Bojsen-Moller
Postprandial secretion of glucagon-like peptide-1 (GLP-1) is enhanced after Roux-en-Y gastric bypass (RYGB), but the precise molecular mechanisms explaining this remain poorly understood. Plasma concentrations of bile acids (BAs) increase after RYGB, and BAs may act as molecular enhancers of GLP-1 secretion through activation of TGR5-receptors. We aimed to evaluate GLP-1 secretion after oral administration of the primary bile acid chenodeoxycholic acid (CDCA) and the secondary bile acid ursodeoxycholic acid (UDCA) (which are available for oral use) in RYGB-operated participants...
February 2017: Physiological Reports
https://www.readbyqxmd.com/read/28201850/novel-treatment-strategies-for-primary-biliary-cholangitis
#5
Albert Parés
Despite the presumed immunological pathogenesis of primary biliary cholangitis, no clear or even harmful consequences have resulted from treatments designed to modify the immunological condition. Ursodeoxycholic acid (13-16 mg/kg/d) has, however, clear favorable effects that not only improve biochemical cholestasis, but also delay histological progression. Long-term treatment with ursodeoxycholic acid is associated with excellent transplant-free survival in cases showing a biochemical response at 1 year. Data on the effects of obeticholic acid and fibrates are encouraging...
February 2017: Seminars in Liver Disease
https://www.readbyqxmd.com/read/28187915/effect-of-ileal-bile-acid-transporter-inhibitor-gsk2330672-on-pruritus-in-primary-biliary-cholangitis-a-double-blind-randomised-placebo-controlled-crossover-phase-2a-study
#6
Vinod S Hegade, Stuart F W Kendrick, Robert L Dobbins, Sam R Miller, Douglas Thompson, Duncan Richards, James Storey, George E Dukes, Margaret Corrigan, Ronald P J Oude Elferink, Ulrich Beuers, Gideon M Hirschfield, David E Jones
BACKGROUND: Up to 70% of patients with primary biliary cholangitis develop pruritus (itch) during the course of their disease. Treatment of pruritus in primary biliary cholangitis is challenging and novel therapies are needed. Ursodeoxycholic acid, the standard first-line treatment for primary biliary cholangitis, is largely ineffective for pruritus. We investigated the efficacy and safety of GSK2330672, a selective inhibitor of human ileal bile acid transporter (IBAT), in patients with primary biliary cholangitis with pruritus...
February 7, 2017: Lancet
https://www.readbyqxmd.com/read/28185534/effect-of-inhibition-of-intestinal-cholesterol-absorption-on-the-prevention-of-cholesterol-gallstone-formation
#7
Piero Portincasa, David Q-H Wang
BACKGROUND: Cholesterol cholelithiasis is a multifactorial hepatobiliary disease. METHODS: Interactions between genetic and environmental factors play a critical role in biliary cholesterol homeostasis and its imbalance enhances cholelithogenesis. RESULTS: In patients developing symptoms or complications of gallstone disease, laparoscopic cholecystectomy is recommended for treatment of gallstones. In a subgroup of patients with small, radiolucent pure cholesterol gallstones, the hydrophilic bile acid, ursodeoxycholic acid (UDCA) is still considered only pharmacological therapy able to induce oral litholysis...
February 9, 2017: Medicinal Chemistry
https://www.readbyqxmd.com/read/28172709/p039-suppression-of-phospholipase-a2-of-intestinal-microbiota-by-the-phospholipid-bile-acid-conjugate-ursodeoxycholate-lysophoshatidylethanolamide-ameliorates-mucosal-inflammation-in-a-genetic-mouse-model-of-ulcerative-colitis
#8
W Stremmel, S Staffer, N Stuhrmann, A Gauss, N Burger, D Hornuss
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28172627/p777-ursodeoxycholic-acid-and-its-taurine-glycine-conjugated-species-reduce-colitogenic-dysbiosis-and-equally-suppress-experimental-colitis-in-mice
#9
L Van den Bossche, P Hindryckx, L Devisscher, S Devriese, S Van Welden, T Holvoet, R Vilchez-Vargas, M Vital, D H Pieper, J Vanden Bussche, L Vanhaecke, T Van de Wiele, M De Vos, D Laukens
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28165825/chemoprevention-of-colorectal-cancer-in-ulcerative-colitis-digging-deep-in-current-evidence
#10
Cristina Bezzio, Stefano Festa, Simone Saibeni, Claudio Papi
Patients with ulcerative colitis (UC) have an increased risk of developing colorectal cancer (CRC). Surveillance colonoscopy is currently recommended for patients with long-standing extensive colitis for reducing CRC risk. Chemoprevention is an attractive complementary strategy. Areas covered: Inflammation is a major determinant of CRC risk and is potentially modifiable. Reducing inflammation is supposed to reduce CRC risk. Several medications have been evaluated in this setting: 5-ASA, thiopurines, anti-TNFα agents and ursodeoxycholic acid (UCDA) in patients with associated primary sclerosing cholangitis (PSC)...
February 6, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28128437/schisandrol-b-protects-against-cholestatic-liver-injury-through-pregnane-x-receptor
#11
Hang Zeng, Yiming Jiang, Pan Chen, Xiaomei Fan, Dongshun Li, Aiming Liu, Xiaochao Ma, Wen Xie, Peiqing Liu, Frank J Gonzalez, Min Huang, Huichang Bi
BACKGROUND AND PURPOSE: Currently, ursodeoxycholic acid is the only FDA-approved drug for limited cholestatic liver diseases, and thus the development of new therapeutic approaches is of great importance. This study aimed to evaluate the anti-cholestasis effect of Schisandrol B (SolB), a bioactive compound isolated from Schisandra sphenanthera. EXPERIMENTAL APPROACH: Hepatoprotective effect of SolB against lithocholic acid (LCA)-induced intrahepatic extrahepatic cholestasis was evaluated in mice...
January 27, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28127564/ursodeoxycholic-acid-attenuates-endoplasmic-reticulum-stress-related-retinal-pericyte-loss-in-streptozotocin-induced-diabetic-mice
#12
Yoo-Ri Chung, Jeong A Choi, Jae-Young Koh, Young Hee Yoon
Loss of pericytes, an early hallmark of diabetic retinopathy (DR), results in breakdown of the blood-retinal barrier. Endoplasmic reticulum (ER) stress may be involved in this process. The purpose of this study was to examine the effects of ursodeoxycholic acid (UDCA), a known ameliorator of ER stress, on pericyte loss in DR of streptozotocin- (STZ-) induced diabetic mice. To assess the extent of DR, the integrity of retinal vessels and density of retinal capillaries in STZ-induced diabetic mice were evaluated...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28122932/greater-adherence-to-cancer-prevention-guidelines-is-associated-with-higher-circulating-concentrations-of-vitamin-d-metabolites-in-a-cross-sectional-analysis-of-pooled-participants-from-2-chemoprevention-trials
#13
Lindsay N Kohler, Elizabeth A Hibler, Robin B Harris, Eyal Oren, Denise J Roe, Peter W Jurutka, Elizabeth T Jacobs
BACKGROUND: Several lifestyle factors targeted by the American Cancer Society (ACS) Nutrition and Physical Activity Cancer Prevention Guidelines are also associated with circulating concentrations of vitamin D metabolites. This suggests that greater adherence to the ACS guidelines may be related to better vitamin D status. OBJECTIVE: We examined the relation between adherence to the ACS guidelines and circulating concentrations of 2 vitamin D metabolites, 25-hydroxycholecalciferol [25(OH)D] and 1α,25-dihydroxyvitamin D [1,25(OH)2D]...
January 25, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28118581/validated-spectrophotometric-and-rp-hplc-dad-methods-for-the-determination-of-ursodeoxycholic-acid-based-on-derivatization-with-2-nitrophenylhydrazine
#14
Dina S El-Kafrawy, Tarek S Belal, Mohamed S Mahrous, Magdi M Abdel-Khalek, Amira H Abo-Gharam
This work describes the development, validation, and application of two simple, accurate, and reliable methods for thedetermination of ursodeoxycholic acid (UDCA) in bulk powder and in pharmaceutical dosage forms. The carboxylic acid group in UDCA was exploited for the development of these novel methods. Method 1 is the colorimetric determination of the drug based on its reaction with 2-nitrophenylhydrazine hydrochloride in the presence of a water-soluble carbodiimide coupler [1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride] and pyridine to produce an acid hydrazide derivative, which ionizes to yield an intense violet color with maximum absorption at 553 nm...
December 23, 2016: Journal of AOAC International
https://www.readbyqxmd.com/read/28116898/engineering-7%C3%AE-hydroxysteroid-dehydrogenase-for-enhanced-ursodeoxycholic-acid-production-by-multiobjective-directed-evolution
#15
Ming-Min Zheng, Ke-Cai Chen, Ru-Feng Wang, Hao Li, Chun-Xiu Li, Jian-He Xu
Ursodeoxycholic acid (UDCA) is the main active ingredient of natural bear bile powder with multiple pharmacological functions. 7β-Hydroxysteroid dehydrogenase (HSDH) is a key biocatalyst for the synthesis of UDCA. However, all the 7β-HSDHs reported commonly suffer from poor activity and thermostability, resulting in limited productivity of UDCA. In this study, a multiobjective directed evolution (MODE) strategy was proposed and applied to improve the activity, thermostability, and pH optimum of a 7β-HSDH...
February 3, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28115375/ursodeoxycholic-acid-and-its-taurine-glycine-conjugated-species-reduce-colitogenic-dysbiosis-and-equally-suppress-experimental-colitis-in-mice
#16
Lien Van den Bossche, Pieter Hindryckx, Lindsey Devisscher, Sarah Devriese, Sophie Van Welden, Tom Holvoet, Ramiro Vilchez-Vargas, Marius Vital, Dietmar H Pieper, Julie Vanden Bussche, Lynn Vanhaecke, Tom Van de Wiele, Martine De Vos, Debby Laukens
: The promising results with secondary bile acids in experimental colitis suggest that they may represent an attractive and safe class of drugs for the treatment of inflammatory bowel diseases (IBD). However, the exact mechanism by which bile acid therapy confers protection from colitogenesis is currently unknown. Since the gut microbiota plays a crucial role in the pathogenesis of IBD, and exogenous bile acid administration may affect the community structure of the microbiota, we examined the impact of the secondary bile acid ursodeoxycholic acid (UDCA) and its taurine/glycine conjugates on the fecal microbial community structure during experimental colitis...
January 23, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28105259/clinical-usefulness-of-ursodeoxycholic-acid-for-japanese-patients-with-autoimmune-hepatitis
#17
Yuichi Torisu, Masanori Nakano, Keiko Takano, Ryo Nakagawa, Chisato Saeki, Atsushi Hokari, Tomohisa Ishikawa, Masayuki Saruta, Mikio Zeniya
AIM: To evaluate the therapeutic effects of ursodeoxycholic acid (UDCA) on autoimmune hepatitis (AIH). METHODS: A total 136 patients who were diagnosed with AIH were included in our study. All of the patients underwent a liver biopsy, and had at least a probable diagnosis on the basis of either the revised scoring system or the simplified scores. Initial treatment included UDCA monotherapy (Group U, n = 48) and prednisolone (PSL) monotherapy (Group P, n = 88). Group U was further classified into two subgroups according to the effect of UDCA: Patients who had achieved remission induction with UDCA monotherapy and showed no sign of relapse (Subgroup U1, n = 34) and patients who additionally received PSL during follow-up (Subgroup U2, n = 14)...
January 8, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28099520/oral-medications-enhance-adherence-to-surveillance-for-hepatocellular-carcinoma-and-survival-in-chronic-hepatitis-b-patients
#18
Joon Yeul Nam, Jeong-Hoon Lee, Hwi Young Kim, Jieun E Kim, Dong Hyeon Lee, Young Chang, Hyeki Cho, Jeong-Ju Yoo, Minjong Lee, Young Youn Cho, Yuri Cho, EunJu Cho, Su Jong Yu, Yoon Jun Kim, Jung-Hwan Yoon
BACKGROUND/AIMS: Regular surveillance for hepatocellular carcinoma (HCC) in chronic hepatitis B (CHB) patients is essential to detect HCC earlier and to improve prognosis. This study investigated whether prescription of oral medication contributes to adherence to surveillance, early tumor detection, and overall survival (OS). METHODS: A total of 401 CHB patients who were newly diagnosed with HCC were included: 134 patients received no medication (group 1), 151 received hepatoprotective agents such as ursodeoxycholic acid and silymarin (group 2), and 116 received antiviral agents (group 3) at two years before HCC diagnosis...
2017: PloS One
https://www.readbyqxmd.com/read/28095263/chemoprevention-of-colorectal-cancer-in-inflammatory-bowel-disease
#19
Adam C Ehrlich, Shyam Patel, Andrew Meillier, Robin D Rothstein, Frank K Friedenberg
Patients with inflammatory bowel disease are at an increased risk of colorectal cancer when compared to the general population. Chronic inflammation is thought to be the underlying cause, and medications that reduce inflammation have the potential to reduce the risk of colorectal cancer. Areas covered: After conducting a PubMed search for relevant literature, we examined several classes of medications that have been studied as potential chemopreventive agents. These include 5-aminosalicylates, thiopurines, tumor necrosis factor antagonists, ursodeoxycholic acid, NSAIDs, and statins...
March 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28092357/risk-of-sinusoidal-obstruction-syndrome-in-allogeneic-stem-cell-transplantation-after-prior-gemtuzumab-ozogamicin-treatment-a-retrospective-study-from-the-acute-leukemia-working-party-of-the-ebmt
#20
G Battipaglia, M Labopin, A Candoni, R Fanin, J El Cheikh, D Blaise, M Michallet, A Ruggeri, N Contentin, J M Ribera, M Stadler, J Sierra, P A von dem Borne, A Bloor, G Socié, A Nagler, M Mohty
Gemtuzumab ozogamicin (GO) may increase the risk of sinusoidal obstruction syndrome (SOS) when used prior to allogeneic stem cell transplantation (HSCT). We assessed SOS incidence and outcomes after HSCT of 146 adults, with a median age of 50 years, previously receiving GO. SOS prophylaxis was used in 69 patients (heparin n=57, ursodeoxycholic acid n=8, defibrotide n=4). Cumulative incidence (CI) of SOS was 8% (n=11), with death in 3 patients. Median interval between last GO dose and HSCT was 130 days. Overall survival (OS) and SOS incidence did not differ for patients receiving GO ⩽3...
January 16, 2017: Bone Marrow Transplantation
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