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https://www.readbyqxmd.com/read/29879670/analysis-of-pharmaceutical-biodegradation-of-wwtp-sludge-using-composting-and-identification-of-certain-microorganisms-involved-in-the-process
#1
María Iranzo, Miguel Gamón, Rafael Boluda, Salvador Mormeneo
Pharmaceuticals (PhCs) are organic contaminants that have been detected in wastewater, surface water, and soils throughout the world. The presence of 10 commonly used PhCs in Spain (azithromycin, benzylpenicillin, citalopram, fluconazole, fluoxetine, ibuprofen, irbesartan, olanzapine, telmisartan, and venlafaxine) was analysed at four wastewater treatment plants, and the changes in their concentrations during treatment were assessed. Although certain some PhCs were degraded in the treated water, their presence in sewage sludge increased in all cases...
June 4, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29867471/pharmacogenetic-aspects-of-the-interaction-of-at1-receptor-antagonists-with-atp-binding-cassette-transporter-abcg2
#2
Anne Ripperger, Anna Krischer, Dina Robaa, Wolfgang Sippl, Ralf A Benndorf
The ATP-binding cassette transporter ABCG2 (BCRP and MXR) is involved in the absorption, distribution, and elimination of numerous drugs. Thus, drugs that are able to reduce the activity of ABCG2, e.g., antihypertensive AT1 receptor antagonists (ARBs), may cause drug-drug interactions and compromise drug safety and efficacy. In addition, genetic variability within the ABCG2 gene may influence the ability of the transporter to interact with ARBs. Thus, the aim of this study was to characterize the ARB-ABCG2 interaction in the light of naturally occurring variations (F489L, R482G) or amino acid substitutions with in silico -predicted relevance for the ARB-ABCG2 interaction (Y469A; M483F; Y570A)...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29803909/degradation-study-of-irbesartan-isolation-and-structural-elucidation-of-novel-degradants
#3
V V S R N Anji Karun Mutha, Santhosh Guduru, Muralidharan Kaliyaperumal, Chidananda Swamy Rumalla, Srinivasa Rao Maddi, Raghu Babu Korupolu, Susheela Bai Gajbhiye
To assess the stability of Irbesartan under stress conditions, and identify the degradation products, it was subjected to hydrolytic and oxidative stress, according to ICH guideline Q1A (R2). The drug showed degradation only in basic conditions, while it was stable to other stress conditions. Three degradation products were formed, which were separated on a C-8 column employing prep HPLC using gradient elution. The structures were established by extensive 1D and 2D NMR spectroscopic studies and mass spectra...
May 12, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29783197/quantification-of-21-antihypertensive-drugs-in-serum-using-uhplc-ms-ms
#4
Per Ole M Gundersen, Arne Helland, Olav Spigset, Solfrid Hegstad
BACKGROUND: Poor drug adherence in hypertensive patients can lead to treatment failure and increased cardiovascular morbidity, as well as increased costs to society. An analytical method based on ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MSMS) was developed and validated for use in routine therapeutic drug monitoring (TDM). The method includes 21 antihypertensive drugs or active metabolites from the groups beta blockers (n=5), calcium antagonists (n=5), angiotensin II receptor antagonists (n=4), angiotensin converting enzyme (ACE) inhibitors (n=3) and diuretics (n = 3), in addition to one α1-selective alpha blocker...
April 28, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29759229/evaluation-of-polar-organic-chemical-integrative-and-hollow-fibre-samplers-for-the-determination-of-a-wide-variety-of-organic-polar-compounds-in-seawater
#5
Leire Mijangos, Haizea Ziarrusta, Ailette Prieto, Oihane Zugazua, Olatz Zuloaga, Maitane Olivares, Aresatz Usobiaga, Albrecht Paschke, Nestor Etxebarria
The calibration of two passive samplers for the determination of 20 emerging organic compounds in seawater is described in this work: i) a new version of polar organic chemical integrative sampler (POCIS) containing 100 mg of mixed-mode anion exchanger (Strata X-AW) and 100 mg of polymeric HLB (Plexa) sorbent materials and using a highly porous Nylon membrane (30-μm pore size) and ii) polyethersulfone (PES) hollow fibre. Among the studied contaminants, herbicides, hormones, life style products (stimulants and artificial sweeteners), industrial chemicals (corrosion inhibitor and fluorinated compounds), personal care products and several pharmaceuticals were included...
August 1, 2018: Talanta
https://www.readbyqxmd.com/read/29753615/targeting-the-proinflammatory-cytokines-oxidative-stress-apoptosis-and-tgf-%C3%AE-1-stat-3-signaling-by-irbesartan-to-ameliorate-doxorubicin-induced-hepatotoxicity
#6
Ahmed M Kabel, Abdulaziz A Alzahrani, Nawaf M Bawazir, Rayan O Khawtani, Hany H Arab
Doxorubicin (DOX) is an anthracycline antibiotic that is used frequently for treatment of various types of malignancies. Hepatotoxicity is one of the serious complications of DOX. The aim of this study was to explore the effect of different doses of irbesartan on doxorubicin-induced hepatotoxicity in mice. Sixty male BALB/c mice were divided into six equal groups as follows: Control group; DOX group; Irbesartan (Small dose) group; Irbesartan (Large dose) group; DOX + Irbesartan (Small dose) group and DOX + Irbesartan (Large dose) group...
May 9, 2018: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29753370/effects-of-different-doses-of-irbesartan-combined-with-spironolactone-on-urinary-albumin-excretion-rate-in-elderly-patients-with-early-type-2-diabetic-nephropathy
#7
Yingying Chen, Peng Liu, Xia Chen, Yanan Li, Fengmei Zhang, Yangang Wang
BACKGROUND: There is a lack of research on the effect of low dose of angiotensin receptor blockers combined with spironolactone, and the effect of high dose of angiotensin receptor blockers alone on the urinary albumin excretion rate (UAER) in elderly patients with early type 2 diabetic nephropathy (DN). METHODS: We conducted a prospective, randomized, open-label, parallel-controlled study that included 244 elderly patients with early DN and mild-to-moderate essential hypertension...
May 2018: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/29748863/repaglinide-irbesartan-drug-interaction-effects-of-slco1b1-polymorphism-on-repaglinide-pharmacokinetics-and-pharmacodynamics-in-chinese-population
#8
Qi Pei, Jun-Yan Liu, Ji-Ye Yin, Guo-Ping Yang, Shi-Kun Liu, Yi Zheng, Pan Xie, Cheng-Xian Guo, Mi Luo, Hong-Hao Zhou, Xi Li, Zhao-Qian Liu
PURPOSE: On account of the potential inhibition of OATP1B1 (organic anion transporting polypeptide) by angiotensin II receptor blockers (ARBs) and the effects of SLCO1B1 (solute carrier organic anion transporter family member) polymorphism, the aim of current study is to assess the impact of ARBs on the pharmacokinetics (PK) and pharmacodynamics (PD) of repaglinide in Chinese healthy volunteers with different SLCO1B1 genotypes. METHODS: The in vitro study was conducted on irbesartan, valsartan, olmesartan, and losartan by using HEK293 cells transfected with OATP1B1...
May 11, 2018: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29746136/relative-activity-factor-raf-based-scaling-of-uptake-clearance-mediated-by-organic-anion-transporting-polypeptide-oatp-1b1-and-oatp1b3-in-human-hepatocytes
#9
Saki Izumi, Yoshitane Nozaki, Hiroyuki Kusuhara, Koichiro Hotta, Toshiki Mochizuki, Takafumi Komori, Kazuya Maeda, Yuichi Sugiyama
In vitro-in vivo extrapolation based on uptake clearance determined in human hepatocytes has been used to predict in vivo hepatic clearance of organic anion transporting polypeptide (OATP) substrates. This study evaluated the relative activity factor (RAF) approach to extrapolate active uptake clearance in transporter-transfected cell systems (CLuptake ) to that in human hepatocyte suspensions (PSinf,act ). RAF values for OATP1B1 and OATP1B3 were determined in two batches of cryopreserved human hepatocytes using estrone-3-sulfate and cholecystokinin octapeptide as reference substrates, respectively...
May 10, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29710617/illicit-drugs-and-pharmaceuticals-in-swimming-pool-waters
#10
G Fantuzzi, G Aggazzotti, E Righi, G Predieri, S Castiglioni, F Riva, E Zuccato
The occurrence of illicit drugs (cocaine, opioids, amphetamines and cannabis derivatives), some of their metabolites and 48 pharmaceuticals, was investigated in pool and source waters in ten Italian indoor swimming pools. The samples were analyzed by highperformance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS), after solid phase extraction (SPE). Cocaine and its metabolites were found in nine swimming pools, at concentrations from 0.3 to 4.2 ng/L for cocaine, 1.1 to 48.7 ng/L for norcocaine, 0...
April 20, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29704812/%C3%B0-theoretical-study-on-ionization-of-sartans-in-aqueous-media-and-on-interactions-with-surfactant-micelles
#11
Marija R Popović-Nikolić, Gordana V Popović, Maja Grujić, Katarina M Nikolić, Danica D Agbaba
The ionization order of sartans in aqueous media and possible way of interactions between their equilibrium forms and surfactant micelles have been theoretically investigated. The examined sartans are ampholytes (irbesartan and losartan) and a diacid (valsartan) with the close values of ionization constants. In order to get a better insight in the overlapped protolytic equilibria of sartans and to predict an affinity of the equilibrium forms interacting with micelles as biomembrane mimetic systems, the theoretical study was performed...
April 20, 2018: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/29702126/irbesartan-attenuates-advanced-glycation-end-products-mediated-damage-in-diabetes-associated-osteoporosis-through-the-ages-rage-pathway
#12
Yan-Zhen Cheng, Shuang-Li Yang, Ji-Yu Wang, Meng Ye, Xiao-Yun Zhuo, Li-Tao Wang, Hong Chen, Hua Zhang, Li Yang
AIMS: Diabetes-associated osteoporosis is mainly caused by the formation and accumulation of advanced glycation end products (AGEs). Angiotensin II type 1 receptor blocker (ARB) has anabolic bone effects on the physicochemical properties of the bone in diabetes. We hypothesized that ARB could inhibit AGEs-induced deleterious effects. MAIN METHODS: In this study, we chose seven-week-old Leprdb/Lepr+ (db/+) and Leprdb/Leprdb (db/db) mice. After 12 week intervention by irbesartan, the microarchitecture and mechanical strength of the bone of seven-week-old db/db mice were investigated systematically...
April 24, 2018: Life Sciences
https://www.readbyqxmd.com/read/29657902/inhibitory-effects-of-angiotensin-ii-receptor-blockade-on-human-tenon-fibroblast-migration-and-reactive-oxygen-species-production-in-cell-culture
#13
Duri Kim, Ushasree Pattamatta, Elizabeth Kelly, Paul R Healey, Nicole Carnt, Hans Zoellner, Andrew J R White
Purpose: We investigate the effect of angiotensin receptor blockade on the migration of human Tenon fibroblasts (HTF), using irbesartan, an angiotensin II receptor type 1 (AT1R) blocker (ARB) as a potential antifibrotic agent in glaucoma filtration surgery. Methods: Confluent HTF cultures were scratched with a 1 mL pipette tip and treated with either irbesartan (10, 50, and 100 μg/mL) or angiotensin II (2 μg/mL). The extent of HTF migration up to 30 hours, and cell number and morphology at 72 hours was evaluated...
April 2018: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/29653073/a-zebrafish-heart-failure-model-for-assessing-therapeutic-agents
#14
Xiao-Yu Zhu, Si-Qi Wu, Sheng-Ya Guo, Hua Yang, Bo Xia, Ping Li, Chun-Qi Li
Heart failure is a leading cause of death and the development of effective and safe therapeutic agents for heart failure has been proven challenging. In this study, taking advantage of larval zebrafish, we developed a zebrafish heart failure model for drug screening and efficacy assessment. Zebrafish at 2 dpf (days postfertilization) were treated with verapamil at a concentration of 200 μM for 30 min, which were determined as optimum conditions for model development. Tested drugs were administered into zebrafish either by direct soaking or circulation microinjection...
June 2018: Zebrafish
https://www.readbyqxmd.com/read/29587863/chinese-herbal-medicine-shenzhuo-formula-treatment-in-patients-with-macroalbuminuria-secondary-to-diabetic-kidney-disease-study-protocol-for-a-randomized-controlled-trial
#15
Xue-Min Zhao, Ying Zhang, Xin-Hui He, Hong-Dong Chen, Zhu-Feng Wang, Jing Guo, Xin-Miao Wang, Ze-Zheng Gao, Ji-Ping Wang, Wei Liu, Lin-Hua Zhao, Xiao-Lin Tong
BACKGROUND: Diabetic kidney disease (DKD) is a serious complication associated with diabetes mellitus and can cause end-stage renal disease (ESRD). Traditional Chinese medicine (TCM) is widely used in China to treat DKD, and in particular microalbuminuria and macroalbuminuria. This study will address the efficacy and safety of Shenzhuo Formula (SZF), a frequently prescribed TCM, in DKD patients with macroalbuminuria. METHODS/DESIGN: This study is a 24-week, randomized, multi-center, double-blinded, double-dummy, controlled, clinical trial that will include 120 DKD patients aged 18 to 80 years old with a 24-h urinary protein (24-h UP) level of between 0...
March 27, 2018: Trials
https://www.readbyqxmd.com/read/29581743/-tripterygium-wilfordii-mitigates-hyperglycemia-induced-upregulated-wnt-%C3%AE-catenin-expression-and-kidney-injury-in-diabetic-rats
#16
Baochao Chang, Weidong Chen, Yan Zhang, Ping Yang, Lei Liu
Aberrant activation of the Wnt/β-catenin pathway contributes to the development of diabetic nephropathy (DN); however, treatment with Tripterygium wilfordii (TW) may be beneficial for patients with DN. The aim of the present study was to evaluate the effect of TW on Wnt/β-catenin expression in the kidneys of diabetic rats. Male Sprague-Dawley rats were randomly injected with vehicle (control) or streptozotocin to induce diabetes. Diabetic rats were then randomly treated with vehicle (sodium carboxymethyl cellulose; SCC), TW combined with SCC (8 or 16 mg/kg) or irbesartan (50 mg/kg) daily for 8 weeks...
April 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29538199/hypertensive-crisis-with-2-target-organ-impairment-induced-by-glycyrrhizin-a-case-report
#17
Jing Li, Xiaoli Fan, Qin Wang
RATIONALE: Glycyrrhizin is the main active component of licorice. Licorice and glycyrrhizin induced hypertension has been widely reported, yet licorice and glycyrrhizin induced hypertensive crisis has been rarely known. PATIENT CONCERNS: The case of this report was a 47-year-old woman, who took 225 mg of glycyrrhizin daily for 3 years due to primary biliary cholangitis. She was found to have a dramatically elevated blood pressure of about 230/110 mmHg without a history of hypertension and was referred to the emergency department...
March 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29523851/a-novel-role-of-irbesartan-in-gastroprotection-against-indomethacin-induced-gastric-injury-in-rats-targeting-ddah-adma-and-egfr-erk-signaling
#18
Nancy N Shahin, Noha F Abdelkader, Marwa M Safar
The advent of angiotensin II type 1 receptor blockers (ARBs) as intriguing gastroprotective candidates and the superior pharmacokinetics and pharmacodynamics displayed by irbesartan compared to many other ARBs raised the interest to investigate its gastroprotective potential in a rat model of gastric injury. Irbesartan (50 mg/Kg) was orally administered to male Wistar rats once daily for 14 days; thereafter gastric injury was induced by indomethacin (60 mg/Kg, p.o). Irbesartan reduced gastric ulcer index, gastric acidity, and ameliorated indomethacin-induced gastric mucosal apoptotic and inflammatory aberrations, as demonstrated by hampering caspase-3, prostaglandin E2 and tumor necrosis factor-alpha levels and cyclooxygenase-2 mRNA expression...
March 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29521223/effects-of-a-series-of-acidic-drugs-on-l-lactic-acid-transport-by-the-monocarboxylate-transporters-mct1-and-mct4
#19
Yat H Leung, Francois Belanger, Jennifer Lu, Jacques Turgeon, Veronique Michaud
BACKGROUND: Drug-induced myopathy is a serious side effect that often requires removal of a medication from a drug regimen. For most drugs, the underlying mechanism of drug-induced myopathy remains unclear. Monocarboxylate transporters (MCTs) mediate L-lactic acid transport, and inhibition of MCTs may potentially lead to perturbation of L-lactic acid accumulation and muscular disorders. Therefore, we hypothesized that L-lactic acid transport may be involved in the development of drug-induced myopathy...
2017: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29436482/the-angiotensin-type-2-receptor-in-the-human-adrenocortical-zona-glomerulosa-and-in-aldosterone-producing-adenoma-low-expression-and-no-functional-role
#20
Paul-Emmanuel Vanderriele, Brasilina Caroccia, Teresa Maria Seccia, Maria Piazza, Livia Lenzini, Francesca Torresan, Maurizio Iacobone, Thomas Unger, Gian Paolo Rossi
The angiotensin II (Ang II) type 2 receptor (AT2R) and the angiotensin-(1-7) (Ang-(1-7)) receptor (MasR) play a cardiovascular protective role by counter-regulating Ang II type 1 receptor (AT1R)-mediated effects, but whether this involves blunting of adrenocortical hormone secretion is unknown. We investigated the presence of AT1R, AT2R, and MasR in aldosterone-producing adenoma (APA), a condition featuring hyperaldosteronism, and in APA-adjacent tissue. The effect of Compound 21 (C21), an AT2R agonist, on CYP11B1 (cortisol synthase) and CYP11B2 (aldosterone synthase) gene expression in NCI-H295R and HAC15 cell lines, and in APA and APA-adjacent tissue, was also assessed using the AT1R antagonist irbesartan to ascertain the specificity of C21 effect...
March 30, 2018: Clinical Science (1979-)
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