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BMC Pharmacology & Toxicology

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https://www.readbyqxmd.com/read/28629388/the-albumin-exendin-4-recombinant-protein-e2hsa-improves-glycemic-control-and-%C3%AE-cell-function-in-spontaneous-diabetic-kkay-mice
#1
Caina Li, Shaocong Hou, Shuainan Liu, Yi Huan, Sujuan Sun, Quan Liu, Zhufang Shen
BACKGROUND: E2HSA is a genetic fusion protein that consists of two tandem exendin-4 molecules that are covalently bonded to recombinant human serum albumin via a peptide linker. Previous studies have demonstrated that E2HSA significantly decreased blood glucose levels, improved β-cell function and promoted β-cell proliferation in diabetic db/dB mice. This study aimed to evaluate the benefits of E2HSA on glucose and lipid metabolism in a spontaneous diabetes animal model, KKAy mice. METHODS: E2HSA was acutely administered at doses of 1, 3 and 9 mg/kg by subcutaneous injection in diabetic KKAy mice with exendin-4 (2 μg/kg) as a positive reference, and then the non-fasting blood glucose and food intake levels were dynamically monitored...
June 19, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28623958/knockdown-of-subunit-3-of-the-cop9-signalosome-inhibits-c2c12-myoblast-differentiation-via-nf-kappab-signaling-pathway
#2
Mariam A Ba, Jeffrey Surina, Cherie A Singer, Maria L Valencik
BACKGROUND: The COP9 signalosome (CSN) is a conserved protein complex composed of 8 subunits designated CSN1-CSN8. CSN3 represents the third subunit of the CSN and maintains the integrity of the complex. CSN3 binds to the striated muscle-specific β1D integrin tail, and its subcellular localization is altered in differentiated skeletal muscle cells. However, the role of CSN3 in skeletal muscle differentiation is unknown. The main goal of this study was to identify whether CSN3 participates in myoblast differentiation and the signalling mechanisms involved using C2C12 cells as a skeletal muscle cell model...
June 17, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28606169/profound-perturbation-induced-by-triclosan-exposure-in-mouse-gut-microbiome-a-less-resilient-microbial-community-with-elevated-antibiotic-and-metal-resistomes
#3
Bei Gao, Pengcheng Tu, Xiaoming Bian, Liang Chi, Hongyu Ru, Kun Lu
BACKGROUND: Environmental chemical-induced perturbations of gut microbiome are associated with a series of adverse health outcomes. The effects of triclosan on human health have been controversial in recent years. The purpose of this study is to investigate the functional impact of triclosan on the mouse gut microbiome and the link between triclosan exposure and resistomes in gut bacteria. METHODS: We combined 16S rRNA gene sequencing and shotgun metagenomics sequencing to examine the compositional and functional impact of triclosan exposure on the gut microbiota of C57BL/6 mice...
June 12, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28599683/pain-sensitivity-and-analgesic-use-among-10-486-adults-the-troms%C3%A3-study
#4
Per-Jostein Samuelsen, Christopher Sivert Nielsen, Tom Wilsgaard, Audun Stubhaug, Kristian Svendsen, Anne Elise Eggen
BACKGROUND: Increased pain sensitivity is a putative risk factor for chronic pain and consequently for analgesic use. Conversely, analgesic use may be a cause of increased pain sensitivity, e.g., through opioid-induced hyperalgesia. We aimed to study the association between pain sensitivity and analgesic use in a general population, and to test the hypothesis that increased baseline pain sensitivity is a risk factor for future persistent analgesic use. METHODS: The Tromsø Study (2007-08), a population-based health study, was linked with eight years of prescription data from the Norwegian Prescription Database...
June 9, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28595649/data-driven-prediction-of-adverse-drug-reactions-induced-by-drug-drug-interactions
#5
Ruifeng Liu, Mohamed Diwan M AbdulHameed, Kamal Kumar, Xueping Yu, Anders Wallqvist, Jaques Reifman
BACKGROUND: The expanded use of multiple drugs has increased the occurrence of adverse drug reactions (ADRs) induced by drug-drug interactions (DDIs). However, such reactions are typically not observed in clinical drug-development studies because most of them focus on single-drug therapies. ADR reporting systems collect information on adverse health effects caused by both single drugs and DDIs. A major challenge is to unambiguously identify the effects caused by DDIs and to attribute them to specific drug interactions...
June 8, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28592315/efficacy-and-safety-of-enzyme-replacement-therapy-with-agalsidase-alfa-in-36-treatment-na%C3%A3-ve-fabry-disease-patients
#6
Kazuya Tsuboi, Hiroshi Yamamoto
BACKGROUND: Fabry disease (FD) is an X-linked lysosomal storage disorder resulting from the α-galactosidase A gene mutations. Enzyme-replacement-therapy (ERT) products for FD currently used include agalsidase alfa and agalsidase beta. There are many reports on efficacy and safety of ERT. However, most of the previous studies are done as a retrospective medical records analysis. METHODS: The Japan Fabry Research - 002 (JFR-002) was a prospective observational clinical study of 36 ERT-naïve FD patients (14 men and 22 women) at baseline (BL) and after initiation of ERT with agalsidase alfa 0...
June 7, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28583171/comparison-of-neurons-derived-from-mouse-p19-rat-pc12-and-human-sh-sy5y-cells-in-the-assessment-of-chemical-and-toxin-induced-neurotoxicity
#7
Dina Popova, Jessica Karlsson, Stig O P Jacobsson
BACKGROUND: Exposure to chemicals might be toxic to the developing brain. There is a need for simple and robust in vitro cellular models for evaluation of chemical-induced neurotoxicity as a complement to traditional studies on animals. In this study, neuronally differentiated mouse embryonal carcinoma P19 cells (P19 neurons) were compared with human neuroblastoma SH-SY5Y cells and rat adrenal pheochromocytoma PC12 cells for their ability to detect toxicity of methylmercury (MeHg), okadaic acid and acrylamide...
June 5, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28583166/tardive-akathisia-related-to-the-anti-hypertensive-agent-sevikar-a-case-report
#8
Men-Ting Hsieh, Pao-Yen Lin, Chia-Jen Tsai, Chiung-Chih Chang, Yu Lee
BACKGROUND: Tardive akathisia (TA) is a subtype of tardive syndrome, and its etiology is still uncertain. Sevikar is an anti-hypertensive agent containing both amlodipine and olmesartan, and has never been reported to have an adverse reaction in patients with tardive syndrome. CASE PRESENTATION: A 57-year-old woman who took Sevikar for hypertension for 10 years developed TA one and a half years before receiving any psychiatric treatment. After switching from Sevikar to bisoprolol, she reported obvious improvement in her akathisia...
June 5, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28577368/inhibitors-of-ubiquitin-e3-ligase-as-potential-new-antimalarial-drug-leads
#9
Jagrati Jain, Surendra K Jain, Larry A Walker, Babu L Tekwani
BACKGROUND: Protein ubiquitylation is an important post-translational regulation, which has been shown to be necessary for life cycle progression and survival of Plasmodium falciparum. Ubiquitin is a highly conserved 76 amino acid polypeptide, which attaches covalently to target proteins through combined action of three classes of enzymes namely, the ubiquitin-activating enzyme (E1), ubiquitin-conjugating enzyme (E2) and ubiquitin-protein ligase (E3). Ubiquitin E1 and E2 are highly conserved within eukaryotes...
June 2, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28558845/metformin-is-not-associated-with-lactic-acidosis-in-patients-with-diabetes-undergoing-coronary-artery-bypass-graft-surgery-a-case-control-study
#10
Rakan I Nazer, Khalid A Alburikan
BACKGROUND: Metformin associated lactic acidosis (MALA) is a rare but lethal complication. There is no consensus regarding when to stop and resume metformin in patients who undergo coronary artery bypass grafting (CABG). This study aimed to determine if uninterrupted metformin administration in patients with diabetes undergoing CABG increases the risk of lactic acidosis. METHODS: Over a span of 12 months (2015-2016), 127 patients with type 2 diabetes underwent isolated CABG...
May 30, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28558784/hesperetin-5-7-3-o-triacetate-suppresses-airway-hyperresponsiveness-in-ovalbumin-sensitized-and-challenged-mice-without-reversing-xylazine-ketamine-induced-anesthesia-in-normal-mice
#11
You-Lan Yang, Chi-Li Chen, Chi-Ming Chen, Wun-Chang Ko
BACKGROUND: We recently reported that hesperetin-5,7,3'-O-triacetate (HTA) dually inhibited phosphodiesterase (PDE)3/4 with a therapeutic ratio of 20.8. The application and development of PDE4 inhibitors for treating asthma or COPD are limited by their side effects, such as nausea, vomiting and gastric hypersecretion. PDE4 inhibitors were reported to reverse xylazine/ketamine-induced anesthesia in rats and triggered vomiting in ferrets. Thus the reversing effect of HTA on xylazine/ketamine-induced anesthesia in mice was studied to assess emetic effect of HTA...
May 30, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28545507/psychotropic-drug-use-and-mortality-in-old-people-with-dementia-investigating-sex-differences
#12
Jon Brännström, Gustaf Boström, Erik Rosendahl, Peter Nordström, Håkan Littbrand, Hugo Lövheim, Yngve Gustafson
BACKGROUND: Psychotropic drugs are common among old people with dementia, and have been associated with increased mortality. Previous studies have not investigated sex differences in this risk. This study was conducted to analyse associations between the use of antipsychotics, antidepressants, and benzodiazepines and 2-year mortality in old people with dementia, and to investigate sex differences therein. METHODS: In total, 1037 participants (74% women; mean age, 89 years) with dementia were included from four cohort studies and followed for 2 years...
May 25, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28545504/a-case-report-of-zinc-phosphide-poisoning-complicated-by-acute-renal-failure-and-tubulo-interstitial-nephritis
#13
Nilukshana Yogendranathan, H M M T B Herath, Thenuka Sivasundaram, R Constantine, Aruna Kulatunga
BACKGROUND: Run Rat® is a rodenticide widely used against small mammals. It comprises of a minimum of 32% zinc phosphide which is highly toxic in acute exposures to humans. It may be consumed accidentally or intentionally. It enters the body via skin, respiratory and gastrointestinal tracts. Zinc phosphide is hydrolyzed by the gastric acid and is transformed into phosphine gas. Phosphine is a respiratory toxin that inhibits cytochrome C oxidase system resulting in renal failure and liver failure...
May 25, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28506250/antimicrobial-resistance-profile-of-staphylococcus-aureus-isolates-isolated-from-ear-discharges-of-patients-at-university-of-hawassa-comprehensive-specialized-hospital
#14
Serawit Deyno, Alemayehu Toma, Mesfin Worku, Muluken Bekele
BACKGROUND: Drug-resistant microorganism are a growing global danger. Strains of S. aureus have developed resistance to many commonly used antimicrobials due to indiscriminate use of antimicrobials, and treatment becoming a challenge. Studies assessing pattern and determinants of S. aureus resistance in ear infection in Ethiopia are very scarce. This study presents overview of pattern and determinants S. aureus resistance from samples of ear discharge in Ethiopia. METHOD: A prospective cross-sectional study was conducted on patients who visit ENT clinic of University of Hawassa comprehensive specialized hospital from February 1, 2016 to November 1, 2016...
May 15, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28486985/the-salvage-therapy-in-lung-adenocarcinoma-initially-harbored-susceptible-egfr-mutation-and-acquired-resistance-occurred-to-the-first-line-gefitinib-and-second-line-cytotoxic-chemotherapy
#15
Chih-Jen Yang, Jen-Yu Hung, Ming-Ju Tsai, Kuan-Li Wu, Ta-Chih Liu, Shah-Hwa Chou, Jui-Ying Lee, Jui-Sheng Hsu, Ming-Shyan Huang, Inn-Wen Chong
BACKGROUND: Epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs) such as gefitinib can provide better efficacy and prolonged progression free survival (PFS) than cytotoxic chemotherapy for metastatic lung non-squamous cell carcinoma harboring susceptible EGFR mutations when used as first-line therapy. Cytotoxic chemotherapy is regarded as being the standard therapy to overcome acquired resistance to an initial EGFR TKI. However, there is currently no consensus on how best to treat patients who develop resistance to both an initial EGFR TKI and chemotherapy...
May 10, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28486949/a-decade-of-adverse-drug-events-in-portuguese-hospitals-space-time-clustering-and-spatial-variation-in-temporal-trends
#16
Gianina Scripcaru, Ceu Mateus, Carla Nunes
BACKGROUND: The aim of this study is to identify the distribution by municipalities of adverse drug events (ADE) in Portugal, including adverse drug reactions (ADR) and accidental poisoning by drugs (AP), on municipality/years ADE rate clustering. Also we identify areas with different trends in time. METHODS: We used a national dataset of public hospital discharges in Continental Portugal from 2004 to 2013. Events were identified based on codes: from E930 to E949...
May 10, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28476169/effects-of-diacetyl-liensinine-on-electrophysiology-in-rabbit-ventricular-myocytes
#17
Feng Cao, Teng Wang, Wenmao Ding, Zhe Li, Shaobo Shi, Xiaozhan Wang
BACKGROUND: Diacetyl-liensinine is a chemosynthetic derivative of liensinine, extracted from the seed embryo of Nelumbo nucifera Gaertn, in China. It has been found to have extensive anti- arrhythmic actions. The present study was designed to investigate the effects of diacetyl-liensinine on electro- physiology of myocytes. METHODS: We exposed rabbit ventricular myocytes to diacetyl-liensinine using standard whole-cell patch-clamp technique and measured the action potential, L-type calcium current (I Ca-L), delayed rectifier potassium current (I K), transient outward potassium current (I to) and inward rectifier potassium current (I K1)...
May 5, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28472978/molecular-mechanism-of-cardol-isolated-from-trigona-incisa-stingless-bee-propolis-induced-apoptosis-in-the-sw620-human-colorectal-cancer-cell-line
#18
Paula Mariana Kustiawan, Kriengsak Lirdprapamongkol, Tanapat Palaga, Songchan Puthong, Preecha Phuwapraisirisan, Jisnuson Svasti, Chanpen Chanchao
BACKGROUND: Cardol is a major bioactive constituent in the Trigona incisa propolis from Indonesia, with a strong in vitro antiproliferative activity against the SW620 colorectal adenocarcinoma cell line (IC50 of 4.51 ± 0.76 μg/mL). Cardol induced G0/G1 cell cycle arrest and apoptotic cell death. The present study was designed to reveal the mechanism of cardol's antiproliferative effect and induction of apoptosis. METHODS: Changes in cell morphology were observed by light microscopy...
May 4, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28468637/drug-transporter-mediated-interactions-between-anthelminthic-and-antiretroviral-drugs-across-the-caco-2-cell-monolayers
#19
Gabriel Kigen, Geoffrey Edwards
BACKGROUND: Drug interactions between antiretroviral drugs (ARVs) and anthelminthic drugs, ivermectin (IVM) and praziquantel (PZQ) were assessed by investigating their permeation through the Caco-2 cell monolayers in a transwell. The impact of anthelminthics on the transport of ARVs was determined by assessing the apical to basolateral (AP → BL) [passive] and basolateral to apical (BL → AP) [efflux] directions alone, and in presence of an anthelminthic. The reverse was conducted for the assessment of the influence of ARVs on anthelminthics...
May 4, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28468688/erroneous-formulation-of-delayed-release-omeprazole-capsules-alert-for-importing-countries
#20
Mohammad Sofiqur Rahman, Naoko Yoshida, Hirohito Tsuboi, Tep Keila, Tey Sovannarith, Heng Bun Kiet, Eav Dararth, Theingi Zin, Tsuyoshi Tanimoto, Kazuko Kimura
BACKGROUND: Poor drug quality is a matter of serious concern, especially in countries where drug regulation and law enforcement are constrained by limited resources. This study was carried out to investigate the cause of quality failure of omeprazole in Cambodia in 2010 and Myanmar in 2014. METHODS: We conducted pharmacopoeial quantity, content uniformity and dissolution tests of 156 samples of omeprazole capsules collected in Cambodia in 2010 and Myanmar in 2014...
May 3, 2017: BMC Pharmacology & Toxicology
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