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Adverse drug-drug interaction

Juan M González-Morena, María I Montañez, Giancarlo Aldini, Francisco J Sánchez-Gómez, Dolores Pérez-Sala
Drug hypersensitivity reactions result from the activation of the immune system by drugs or their metabolites. The clinical presentations of drug hypersensitivity can range from relatively mild local manifestations to severe systemic syndromes that can be life-threatening. As in other allergic reactions, the causes are multifactorial as genetic, metabolic and concomitant factors may influence the occurrence of drug hypersensitivity. Formation of drug protein adducts is considered a key step in drug adverse reactions, and in particular in the immunological recognition in drug hypersensitivity reactions...
September 27, 2016: Current Pharmaceutical Design
Nasrin Dehghan-Nayeri, Mostafa Rezaei-Tavirani, Mir Davood Omrani, Ahmad Gharehbaghian, Kourosh Goudarzi Pour, Peyman Eshghi
Response to dexamethasone (DEXA), as a hallmark drug in the treatment of childhood acute lymphoblastic leukemia (ALL), is one of the pivotal prognostic factors in the prediction of outcome in ALL. Identification of predictive markers of chemoresistance is beneficial to selecting of the best therapeutic protocol with the lowest effect adverse. Hence, we aimed to find drug targets using the 2DE/MS proteomics study of a DEXA-resistant cell line (REH) as a model for poor DEXA responding patients before and after drug treatment...
October 24, 2016: Journal of Cell Communication and Signaling
Madhusudanarao Vuda, Ashwin Kamath
Several commonly used medications impair mitochondrial function resulting in adverse effects or toxicities. Drug induced mitochondrial dysfunction may be a consequence of increased production of reactive oxygen species, altered mitochondrial permeability transition, impaired mitochondrial respiration, mitochondrial DNA damage or inhibition of beta-oxidation of fatty acids. The clinical manifestation depends on the specific drug and its effect on mitochondria. Given the ubiquitous presence of mitochondria and its central role in cellular metabolism, drug-mitochondrial interactions may manifest clinically as hepatotoxicity, enteropathy, myelosuppression, lipodystrophy syndrome or neuropsychiatric adverse effects, to name a few...
October 19, 2016: Mitochondrion
Peter G Alexander, Karen L Clark, Rocky S Tuan
Limb congenital defects afflict approximately 0.6:1000 live births. In addition to genetic factors, prenatal exposure to drugs and environmental toxicants, represents a major contributing factor to limb defects. Examples of well-recognized limb teratogenic agents include thalidomide, warfarin, valproic acid, misoprostol, and phenytoin. While the mechanism by which these agents cause dymorphogenesis is increasingly clear, prediction of the limb teratogenicity of many thousands of as yet uncharacterized environmental factors (pollutants) remains inexact...
October 21, 2016: Birth Defects Research. Part C, Embryo Today: Reviews
Abdullah Turhan, Simone Onrust, Peter Ten Klooster, Marcel Pieterse
AIMS: To test effectiveness of the Healthy School and Drugs (HSD) program on tobacco and alcohol use in Dutch secondary special education (SE) schools, and whether this depends on subtypes of SE-schools and the level of implementation. DESIGN: In a quasi-experimental design with baseline and post-treatment follow-up 35 classes (N = 363) were allocated arbitrarily or depending on teacher motivation to either intervention condition (N = 205) or usual curriculum (N = 158)...
October 21, 2016: Addiction
S Kanda, K Goto, H Shiraishi, E Kubo, A Tanaka, H Utsumi, K Sunami, S Kitazono, H Mizugaki, H Horinouchi, Y Fujiwara, H Nokihara, N Yamamoto, H Hozumi, T Tamura
BACKGROUND: The human IgG4 monoclonal antibody nivolumab targets programmed cell death-1 (PD-1) and promotes antitumor response by blocking the interaction of PD-1 with its ligands. This single-center phase Ib study investigated the tolerability, safety, and pharmacokinetics of nivolumab combined with standard chemotherapy in patients with advanced non-small-cell lung cancer (NSCLC). PATIENTS AND METHODS: Patients who had stage IIIB without indication for definitive radiotherapy, stage IV, or recurrent NSCLC were eligible...
October 20, 2016: Annals of Oncology: Official Journal of the European Society for Medical Oncology
Yushu Yin, Georgia Papavasiliou, Olga Y Zaborina, John C Alverdy, Fouad Teymour
The human gastrointestinal tract is the primary site of colonization of multidrug resistant pathogens and the major source of life-threatening complications in critically ill and immunocompromised patients. Eradication measures using antibiotics carry further risk of antibiotic resistance. Furthermore, antibiotic treatment can adversely shift the intestinal microbiome toward domination by resistant pathogens. Therefore, approaches directed to prevent replacement of health promoting microbiota with resistant pathogens should be developed...
October 19, 2016: Annals of Biomedical Engineering
Outi Laatikainen, Sami Sneck, Risto Bloigu, Minna Lahtinen, Timo Lauri, Miia Turpeinen
Adverse drug events (ADEs) are more likely to affect geriatric patients due to physiological changes occurring with aging. Even though this is an internationally recognized problem, similar research data in Finland is still lacking. The aim of this study was to determine the number of geriatric medication-related hospitalizations in the Finnish patient population and to discover the potential means of recognizing patients particularly at risk of ADEs. The study was conducted retrospectively from the 2014 emergency department patient records in Oulu University Hospital...
2016: Frontiers in Pharmacology
Ilana Levy, Samuel Attias, Eran Ben-Arye, Lee Goldstein, Elad Schiff
BACKGROUND: Dietary and herbal supplements (DHS) are commonly used among inpatients and may cause interactions with drugs or other DHS. The study explored whether adverse events were actually associated with such interactions and examined specific characteristics among inpatient DHS users prone to such adverse events. METHODS: This was a cross-sectional study of 947 patients hospitalized in 12 departments of a tertiary academic medical centre in Haifa, Israel. It evaluated the rate of DHS use among inpatients, the potential for interactions, and actual adverse events during hospitalization associated with DHS use...
October 19, 2016: British Journal of Clinical Pharmacology
Jia Yin, Haichuan Duan, Joanne Wang
Renal transporter-mediated drug-drug interactions (DDIs) are of significant clinical concerns as they can adversely impact drug disposition, efficacy and toxicity. Emerging evidence suggests that human renal organic cation transporter 2 (hOCT2) and multidrug and toxin extrusion proteins 1 and 2-K (hMATE1/2-K) exhibit substrate-dependent inhibition but the impact on renal drug secretion and intracellular accumulation is unknown. Using metformin and atenolol as the probe substrates, we found that the classic inhibitors (e...
October 6, 2016: Journal of Pharmacology and Experimental Therapeutics
Hamid Reza Bahrami, Shokouhsadat Hamedi, Roshanak Salari, Mohammadreza Noras
Irritable Bowel Syndrome (IBS) is a chronic digestive disorder, which is characterized by abdominal pain, bloating, diarrhea and constipation periods. The etiology is unknown. Based on the different mechanisms in the etiology, treatment focuses on controlling symptoms. Due to the longtime of syndrome, inadequacy of current treatments, financial burden for patients and pharmacologic effects, several patients have turned to the use of complementary and alternative medicine (CAM). Complementary and alternative treatments for IBS include hypnosis, acupuncture, cognitive behavior therapy, yoga, and herbal medicine...
August 2016: Electronic Physician
William James Deardorff, George T Grossberg
Currently available therapies for the treatment of Alzheimer's disease (AD) consist of cholinesterase inhibitors (ChEIs), such as donepezil, and the N-methyl-D-aspartate receptor antagonist memantine. In December 2014, the US Food and Drug Administration approved Namzaric™, a once-daily, fixed-dose combination (FDC) of memantine extended-release (ER) and donepezil for patients with moderate-to-severe AD. The FDC capsule is bioequivalent to the coadministered individual drugs, and its bioavailability is similar when taken fasting, with food, or sprinkled onto applesauce...
2016: Drug Design, Development and Therapy
A Kenneth MacLeod, Lesley A McLaughlin, Colin J Henderson, C Roland Wolf
Tamoxifen is an oestrogen-receptor (ER) antagonist used in the treatment of breast cancer. It is a pro-drug, converted by several P450 enzymes to a primary metabolite, N-desmethyltamoxifen (NDT), which is then further modified by CYP2D6 to a pharmacologically potent secondary metabolite, 4-hydroxy-N-desmethyltamoxifen (endoxifen). Anti-depressants (ADs), which are often co-prescribed to patients receiving tamoxifen, are also metabolised by CYP2D6 and evidence suggests that a drug-drug interaction (DDI) between these agents adversely affects the outcome of tamoxifen therapy by inhibiting endoxifen formation...
October 18, 2016: Drug Metabolism and Disposition: the Biological Fate of Chemicals
Saud M Alsanad, Rachel L Howard, Elizabeth M Williamson
BACKGROUND: Herb/Dietary Supplements (HDS) are the most popular Complementary and Alternative Medicine (CAM) modality used by cancer patients and the only type which involves the ingestion of substances which may interfere with the efficacy and safety of conventional medicines. This study aimed to assess the level of use of HDS in cancer patients undergoing treatment in the UK, and their perceptions of their effects, using 127 case histories of patients who were taking HDS. Previous studies have evaluated the risks of interactions between HDS and conventional drugs on the basis on numbers of patient using HDSs, so our study aimed to further this exploration by examining the actual drug combinations taken by individual patients and their potential safety...
October 18, 2016: BMC Complementary and Alternative Medicine
Manan Pareek, Mette Lundgren Nielsen, Margrét Leósdóttir, Peter M Nilsson, Michael Hecht Olsen
OBJECTIVE: To explore the independent prognostic value of left ventricular (LV) mass, diastolic function, and fasting plasma glucose (FPG) for the prediction of incident cardiac events in a random population sample. DESIGN AND METHOD: 415 women and 999 men aged 56-79 years, included between 2002-2006, underwent echocardiography based on groups defined by FPG, i.e. normal (NFG): FPG ≤ 6.0 mmol/L; impaired (IFG): FPG 6.1-6.9 mmol/L; and diabetes mellitus (DM): FPG ≥ 7...
September 2016: Journal of Hypertension
Kusum Mehla, Jayashree Ramana
Travelers' diarrhea (TD) is one of the most important global health issues among international travelers, especially those traveling to developing countries. Enterotoxigenic Escherichia coli (ETEC) is the most frequently isolated pathogen causing TD. Although TD is self-limiting, it is also severely incapacitating. Ciprofloxacin is one of the standard quinolone antibiotics used in patients with TD. However, the alarming levels of antibiotic resistance have necessitated the urgent need to identify new drugs...
October 18, 2016: Omics: a Journal of Integrative Biology
Zachary R Noel, Craig J Beavers
Proprotein Convertase Subtilisin/Kexin Type 9 (PCSK9) inhibitors serve as a valuable addition to the armamentarium of lipid lowering agents and have promising potential. By inhibiting the PCSK9 enzyme, this novel molecule leads to increase low density lipoprotiein (LDL) receptor density and decreased circulation of LDL. The fact the agent is a monoclonal antibody has led to limited drug interactions and minimized adverse drug events. It is critical for all providers to have a basic understanding of these novel therapies with their introduction and use for treatment...
October 14, 2016: American Journal of Medicine
N A Giraldo, P Amariles, M Monsalve, M J Faus
BACKGROUND: Highly active antiretroviral therapy has extended the expected lifespan of patients with HIV/AIDS. However, the therapeutic benefits of some drugs used simultaneously with highly active antiretroviral therapy may be adversely affected by drug interactions. OBJECTIVE: The goal was to design and develop a free software to facilitate analysis, assessment, and clinical decision making according to the clinical relevance of drug interactions in patients with HIV/AIDS...
September 23, 2016: Research in Social & Administrative Pharmacy: RSAP
Christina Binder, Caroline Zotter-Tufaro, Diana Bonderman
The development of pulmonary hypertension (PH) has multifactorial underlying pathophysiological causes and can be classified into five groups. While three different classes of therapeutic drugs are licensed for the treatment of pulmonary arterial hypertension (PAH, WHO group 1), specific medical therapies are lacking for other forms of PH, such as PH due to left heart disease. In 2013 riociguat, a first-in class soluble guanylate cyclase stimulator, has also become available for the treatment of PAH. Riociguat was further introduced as the first approved pharmacotherapy for the treatment of patients with chronic thromboembolic PH (WHO group 4, CTEPH)...
October 18, 2016: Expert Opinion on Drug Safety
Jane Schröder, Lisa Goltz, Holger Knoth
The clinical relevance of the drug-drug interaction simvastatin and amlodipine is appraised controversially by german simvastatin Summary of Product Characteristics (SPCs) and different drug interaction databases. Results of clinical trials have shown that simultaneous administration of simvastatin and amlodipine can increase simvastatin bioavailability. However, it is unclear whether this increase is associated with a higher risk for adverse drug events. So far there is no evidence that the combination might increase cases of myopathy or rhabdomyolysis...
October 2016: Deutsche Medizinische Wochenschrift
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