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https://www.readbyqxmd.com/read/28336172/curcuma-longa-linn-extract-and-curcumin-protect-cyp-2e1-enzymatic-activity-against-mercuric-chloride-induced-hepatotoxicity-and-oxidative-stress-a-protective-approach
#1
Deepmala Joshi, Deepak Kumar Mittal, Sangeeta Shukla, Sunil Kumar Srivastav, Vaibhav A Dixit
The present investigation has been conducted to evaluate the therapeutic potential of Curcuma longa (200mgkg(-1), po) and curcumin (80mgkg(-1), po) for their hepatoprotective efficacy against mercuric chloride (HgCl2: 12μmolkg(-1), ip; once only) hepatotoxicity. The HgCl2 administration altered various biochemical parameters, including transaminases, alkaline phosphatase, lactate dehydrogenase, bilirubin, gamma-glutamyl transferase, triglycerides and cholesterol contents with a concomitant decline in protein and albumin concentration in serum which were restored towards control by therapy of Curcuma longa or curcumin...
March 20, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28331311/a-potential-in-situ-gel-formulation-loaded-with-novel-fabricated-poly-lactide-co-glycolide-nanoparticles-for-enhancing-and-sustaining-the-ophthalmic-delivery-of-ketoconazole
#2
Tarek Abdelnapy Ahmed, Bader M Aljaeid
Oral ketoconazole therapy is commonly associated with serious hepatotoxicity. Improving ocular drug delivery could be sufficient to treat eye fungal infections. The purpose of this study was to develop optimized ketoconazole poly(lactide-co-glycolide) nanoparticles (NPs) with subsequent loading into in situ gel (ISG) formulation for ophthalmic drug delivery. Three formulation factors were optimized for their effect on particle size (Y1) and entrapment efficiency (Y2) utilizing central composite experimental design...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28329820/hepatocellular-toxicity-of-imidazole-and-triazole-antimycotic-agents
#3
Patrizia Haegler, Lorenz Joerin, Stephan Krähenbühl, Jamal Bouitbir
Hepatotoxicity has been described for all antimycotic azoles currently marketed. A possible mechanism involving mitochondrial dysfunction has been postulated for ketoconazole, but not for the other azoles. The aim of the current investigations was to study the toxicity of different azoles in human cell models and to find out mechanisms of their toxicity. In HepG2 cells, posaconazole and ketoconazole were cytotoxic starting at 20 and 50 µM and decreased the cellular ATP content starting at 5 and 10 µM, respectively...
January 27, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28328020/detection-of-glutathione-conjugates-of-amiodarone-and-its-reactive-diquinone-metabolites-in-rat-bile-using-mass-spectrometry-tools
#4
Keyur R Parmar, Shalu Jhajra, Saranjit Singh
RATIONALE: Amiodarone is reported to cause hepato and pulmonary toxicity in humans, which has been envisaged to be due to formation of its reactive metabolites, essentially based on its structural similarity to benzbromarone, a drug withdrawn from the market due to reasons of similar hepatotoxicity. Therefore, the purpose of this study was to detect glutathione conjugates of amiodarone and its reactive diquinone metabolites in rat bile using mass spectrometry tools. METHODS: Wistar rats were dosed orally with an amiodarone suspension and bile was collected via bile duct cannulation followed by solid-phase extraction, protein precipitation and centrifugation...
May 30, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28327789/prevalence-of-hepatitis-c-virus-and-human-immunodeficiency-virus-in-a-group-of-patients-newly-diagnosed-with-active-tuberculosis-in-porto-alegre-southern-brazil
#5
Cintia Costi, Tarciana Grandi, Maria Laura Halon, Márcia Susana Nunes Silva, Cláudia Maria Dornelles da Silva, Tatiana Schäffer Gregianini, Lia Gonçalves Possuelo, Carla Adriane Jarczewski, Christian Niel, Maria Lucia Rosa Rossetti
BACKGROUND: Porto Alegre is the Brazilian state capital with second highest incidence of tuberculosis (TB) and the highest proportion of people infected with human immunodeficiency virus (HIV) among patients with TB. Hepatitis C virus (HCV) infection increases the risk of anti-TB drug-induced hepatotoxicity, which may result in discontinuation of the therapy. OBJECTIVES: The aim of this study was (i) to estimate prevalence of HCV and HIV in a group of patients newly diagnosed with active TB in a public reference hospital in Porto Alegre and (ii) to compare demographic, behavioural, and clinical characteristics of patients in relation to their HCV infection status...
April 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28325735/rescue-preoperative-treatment-with-lugol-s-solution-in-uncontrolled-graves-disease
#6
Jan Calissendorff, Henrik Falhammar
BACKGROUND: Graves' disease is a common cause of hyperthyroidism. Three therapies have been used for decades: pharmacologic therapy, surgery and radioiodine. In case of adverse events, especially agranulocytosis or hepatotoxicity, pre-treatment with Lugol's solution containing iodine/potassium-iodide to induce euthyroidism before surgery could be advocated but has rarely been reported. METHOD: All patients hospitalised due to uncontrolled hyperthyroidism at the Karolinska University Hospital 2005-2015 and treated with Lugol's solution were included...
March 21, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28323125/minocycline-hepatotoxicity-clinical-characterization-and-identification-of-hla-b%C3%A2-35-02-as-a-risk-factor
#7
Thomas Jacob Urban, Paola Nicoletti, Naga Chalasani, Jose Serrano, Andrew Stolz, Ann Daly, Guruprasad Aithal, John Dillon, Victor Navarro, Joseph Odin, Huiman Barnhart, David Ostrov, Nanye Long, Elizabeth Theresa Cirulli, Paul Brent Watkins, Robert John Fontana
BACKGROUND & AIMS: Minocycline hepatotoxicity can present with prominent autoimmune features in previously healthy individuals. The aim of this study was to identify genetic determinants of minocycline DILI in a well-phenotyped cohort of patients. METHODS: Caucasian patients with minocycline DILI underwent genome-wide genotyping and were compared to unexposed population controls. Human leukocyte antigen (HLA) binding of minocycline was assessed using AutoDock Vina...
March 17, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28322066/hepatoprotective-effect-against-ccl4-induced-acute-liver-damage-in-mice-and-high-performance-liquid-chromatography-mass-spectrometric-method-for-analysis-of-the-constituents-of-extract-of-rubus-crataegifolius
#8
Yongjiao Sun, Lingyun Jia, Zhanbo Huang, Jing Wang, Jincai Lu, Jing Li
This study is an attempt to evaluate the hepatoprotective activity of Rubus Crataegifolius against carbon tetrachloride-induced liver injury in mice. 70% ethanolic, ethyl acetate and n-BuOH extract of R. crataegifolius were administered daily for 14 days in experimental animals before they were treated with CCl4. The hepatoprotective activity of the extracts in this study was compared with the reference drug silymarin. A high-performance liquid chromatography mass spectrometric (HPLC-EIS-MS/MS) method was developed for the determination of the constituents of the extracts...
March 21, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28318525/psoriasis-and-nonalcoholic-fatty-liver-disease
#9
J M Carrascosa, C Bonanad, E Dauden, R Botella, A Olveira-Martín
Nonalcoholic fatty liver disease (NAFLD) is the most prevalent liver condition in the West. The prevalence and severity of NAFLD is higher and the prognosis worse in patients with psoriasis. The pathogenic link between psoriasis and NAFLD is chronic inflammation and peripheral insulin resistance, a common finding in diseases associated with psoriasis. NAFLD should therefore be ruled out during the initial evaluation of patients with psoriasis, in particular if they show signs of metabolic syndrome and require systemic treatment...
March 16, 2017: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/28317117/comparative-pharmacokinetic-evaluation-of-lopinavir-and-lopinavir-loaded-solid-lipid-nanoparticles-in-hepatic-impaired-rat-model
#10
Punna Rao Ravi, Rahul Vats
OBJECTIVE: Drug-induced hepatotoxicity is a major cause of concern in patients receiving HIV/TB co-treatment. Lopinavir (LPV), an anti-HIV drug, shows poor plasma exposure due to hepatic first-pass metabolism. In this study, we investigated the effect of hepatotoxicity on pharmacokinetics of free LPV and LPV-loaded solid lipid nanoparticles (LPV SLNs) in male Wistar rats. METHODS: Hepatic impairment model in rats was developed by injecting CCl4 (i.p., 2 ml/kg). Comparative pharmacokinetic (n = 5) and tissue distribution studies (n = 3) were conducted following oral administration (20 mg/kg) of free LPV and LPV SLNs in normal and hepatic impaired rats...
March 19, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28315126/screening-for-main-components-associated-with-the-idiosyncratic-hepatotoxicity-of-a-tonic-herb-polygonum-multiflorum
#11
Chunyu Li, Ming Niu, Zhaofang Bai, Congen Zhang, Yanling Zhao, Ruiyu Li, Can Tu, Huifang Li, Jing Jing, Yakun Meng, Zhijie Ma, Wuwen Feng, Jinfa Tang, Yun Zhu, Jinjie Li, Xiaoya Shang, Zhengsheng Zou, Xiaohe Xiao, Jiabo Wang
The main constituents of a typical medicinal herb, Polygonum multiflorum (Heshouwu in Chinese), that induces idiosyncratic liver injury remain unclear. Our previous work has shown that cotreatment with a nontoxic dose of lipopolysaccharide (LPS) and therapeutic dose of Heshouwu can induce liver injury in rats, whereas the solo treatment cannot induce observable injury. In the present work, using the constituent "knock-out" and "knock-in" strategy, we found that the ethyl acetate (EA) extract of Heshouwu displayed comparable idiosyncratic hepatotoxicity to the whole extract in LPS-treated rats...
March 17, 2017: Frontiers of Medicine
https://www.readbyqxmd.com/read/28314361/hepatotoxicity-and-drug-chemical-interaction-toxicity-of-nanoclay-particles-in-mice
#12
Katsuhiro Isoda, Ryutaro Nagata, Tomoya Hasegawa, Yuichiro Taira, Ikuko Taira, Yoshimi Shimizu, Kazuo Isama, Tetsuji Nishimura, Isao Ishida
Nanomaterials are relatively new and unconventional materials with many useful properties, but their effects on biological systems are poorly understood. Nanoclay is a general term for layered mineral silicate nanoparticles that are ideally suited for use in clay-based nanocomposites. The potential biological hazards of nanoclays have not been addressed, however. Therefore, we investigated the in vivo effects and drug interactions of nanoclays. In mice, administration of nanoclay particles via the tail vein led to acute liver injury...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28295935/real-time-in%C3%A2-vivo-hepatotoxicity-monitoring-through-chromophore-conjugated-photon-upconverting-nanoprobes
#13
Juanjuan Peng, Animesh Samanta, Xiao Zeng, Sanyang Han, Lu Wang, Dongdong Su, Daniel Teh Boon Loong, Nam-Young Kang, Sung-Jin Park, Angelo Homayoun All, Wenxuan Jiang, Lin Yuan, Xiaogang Liu, Young-Tae Chang
Drug toxicity is a long-standing concern of modern medicine. A typical anti-pain/fever drug paracetamol often causes hepatotoxicity due to peroxynitrite ONOO(-) . Conventional blood tests fail to offer real-time unambiguous visualization of such hepatotoxicity in vivo. Here we report a luminescent approach to evaluate acute hepatotoxicity in vivo by chromophore-conjugated upconversion nanoparticles. Upon injection, these nanoprobes mainly accumulate in the liver and the luminescence of nanoparticles remains suppressed owing to energy transfer to the chromophore...
March 15, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28294041/tacrine-based-multifunctional-agents-in-alzheimer-s-disease-an-old-story-in-continuous-development
#14
Andrea Milelli, Angela De Simone, Nicole Ticchi, Huan Huan Chen, Nibal Betari, Vincenza Andrisano, Vincenzo Tumiatti
Tacrine is no longer used for the treatment of Alzheimer's disease (AD) as oral acetylcholinesterase (AChE) inhibitor (AChEI) mainly due to its hepatotoxic effects. Notwithstanding, it is still one of the most famous drugs. Indeed, since the discovery of the "non-cholinergic" AChE's activities and the seminal paper from Pang and coworkers reporting the discovery of a tacrine-dimer, bis(7)-tacrine, tacrine has been used from legions of medicinal chemists as a starting point to develop new multi target ligands (MTLs), able to interfere with biochemical pathways and targets whose dysregulation seems to be involved in the development of AD...
March 9, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28293388/protective-role-of-licochalcone-b-against-ethanol-induced-hepatotoxicity-through-regulation-of-erk-signaling
#15
Xiao-Peng Gao, Dong-Wei Qian, Zhen Xie, Hao Hui
OBJECTIVES: Oxidative stress has been established as a key cause of alcohol-induced hepatotoxicity. Licochalcone B, an extract of licorice root, has shown antioxidative properties. This study was to investigate the effects and mechanisms of licochalcone B in ethanol-induced hepatic injury in an in vitro study. MATERIALS AND METHODS: An in vitro model of Ethanol-induced cytotoxicity in BRL cells was used in this study. Cell injury was assessed using WST-1 assay and lactate dehydrogenase, alanine transaminase, and aspartate aminotransferase release assay...
February 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28292352/prevalence-and-risk-factors-associated-with-adverse-drug-reactions-among-previously-treated-tuberculosis-patients-in-china
#16
Xi Qin Han, Yu Pang, Yan Ma, Yu Hong Liu, Ru Guo, Wei Shu, Xue Rui Huang, Qi Ping Ge, Jian DU, Wei Wei Gao
We assessed the incidence of adverse drug reactions (ADRs) with anti-TB medications and evaluated the risk factors for developing ADRs in previously treated tuberculosis patients in China. All patients received the first-line anti-TB regimen (2HREZS/6HRE) as recommended by the national guidelines. Clinical and laboratory evaluations were performed once a month. Out of the 354 participants, 262 (74.0%) experienced ADRs such as hyperuricemia (65.0%, 230/354), hepatotoxicity (6.2%, 22/354) and hearing disturbances (4...
February 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28273564/hepatotoxicity-and-proteomic-mechanism-of-di-n-butyl-di-4-chlorobenzohydroxamato-tin-iv-dbdct-in-vivo
#17
Li Tang, Jie-Ran Luo, Yun-Lan Li, Rui Ge, Qing-Shan Li
Di-n-butyl-di-(4-chlorobenzohydroxamato)tin(IV) (DBDCT) is an anti-tumour organotin(IV) compound with hepatotoxicity. To investigate the hepatotoxicity and mechanisms of DBDCT in vivo, proteomic technology 2D gel combined with MALDI-TOF-MS was used in our research. Results indicated that DBDCT increased AST, AKP and ACP activities and decreased ALT activity. Further, sporadic eosinophilic changes and nuclear pyknosis were visible in hepatic pathological observation. Proteomic analysis showed that twenty-two proteins involved in amino acid, nucleic acid, carbohydrate and lipid metabolism, stress response, multicellular organism development and cell apoptosis were differentially expressed and identified...
February 24, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28267983/synthesis-molecular-modeling-studies-and-anticonvulsant-activity-of-certain-1-benzyl-aryl-amino-cyclohexyl-methyl-esters
#18
Walaa Hamada Abd-Allah, Mona Elsayed Aboutabl, Mohamed Nabil Aboul-Enein, Aida Abdel Sattar El-Azzouny
A series of (1-(benzyl (aryl) amino) cyclohexyl) methyl esters 7a-n were prepared and screened for their anticonvulsant profile. Screening of these esters 7a-n and their starting alcohols 6a and 6b revealed that compound 7k was the most potent one in the scPTZ screening test with an ED50 value of 0.0056mmol/kg being about 10- and 164-fold more potent than phenobarbital (ED50=0.056mmol/kg) and ethosuximide (ED50=0.92mmol/kg) as reference drugs, respectively. Meanwhile, in the MES test, compounds 7b and 7k at doses 0...
February 27, 2017: Bioorganic Chemistry
https://www.readbyqxmd.com/read/28263783/establishment-of-a-novel-mouse-model-for-pioglitazone-induced-skeletal-muscle-injury
#19
Sho Akai, Shingo Oda, Tsuyoshi Yokoi
Skeletal muscle (SKM) injury is one of the major safety concerns in risk assessment for drug development. However, no appropriate pre-clinical animal model exists to evaluate drug-induced SKM injury except that caused by fibrates and statins. Thiazolidinedione, a PPARγ agonistic drug for type 2 diabetes mellitus, is widely used clinically but can induce adverse effects such as hepatotoxicity and SKM injury, as has been reported in recent decades. Moreover, thiazolidinedione-induced SKM injury has only been reported in humans, and no evidence of SKM injury has been observed in rodents...
March 2, 2017: Toxicology
https://www.readbyqxmd.com/read/28263463/drug-and-drug-abuse-associated-hyperbilirubinemia-experience-with-atazanavir
#20
Jayanta Roy-Chowdhury, Namita Roy-Chowdhury, Irving Listowsky, Allan W Wolkoff
Hyperbilirubinemia is a common finding in individuals with a history of substance abuse. Although this may indicate a serious disorder of liver function, this is not always the case. An understanding of bilirubin formation, metabolism, and transport can provide a helpful approach to dealing with these patients. This is typified by studies of patients treated with the antiretroviral drug atazanavir. Atazanavir has been associated with hyperbilirubinemia in as many as one-third of individuals for whom it has been prescribed, evoking concerns of hepatotoxicity...
March 2017: Clinical Pharmacology in Drug Development
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