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https://www.readbyqxmd.com/read/28223230/myotoxicity-of-statins-mechanism-of-action
#1
REVIEW
Patrick du Souich, Ghislaine Roederer, Robert Dufour
Statins are effective drugs to reduce cardiovascular events secondary to dyslipidemia; however, they cause frequent undesirable side effects. The incidence of statin-induced myotoxicity (SIM) is presented by 7 to 29% of patients, depending upon the report. SIM may develop in presence of abnormally high concentrations of statins in the myocyte and/or in presence of muscular conditions that may predispose to SIM. High concentrations of statins in the myocyte may occur whenever the activity of liver influx membrane transporters, namely OATP1B1, of drug metabolizing enzymes, and of liver and muscular efflux transporters, MDR1 and BCRP, is reduced...
February 14, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28221303/a-case-of-asymptomatic-inclusion-body-myositis
#2
Rey Bello, Tulio Bertorini, Kartheek Ganta, William Mays
OBJECTIVES: To present a case of asymptomatic inclusion body myositis. METHODS: The authors report a case of a 67-year-old man who presented with idiopathic hyperCKemia. Physical examination including a complete neurological evaluation was unremarkable. Systemic causes of hyperCKemia, including medication side effects, metabolic and endocrine disorders, and connective tissue disorders, were ruled out with various indicated tests. RESULTS: Two and a half years after initial consultation, the patient reported left knee pain...
March 2017: Journal of Clinical Neuromuscular Disease
https://www.readbyqxmd.com/read/28219725/planar-implantable-sensor-for-in-vivo-measurement-of-cellular-oxygen-metabolism-in-brain-tissue
#3
Vassiliy Tsytsarev, Fatih Akkenti, Elena Pumbo, Qinggong Tang, Yu Chen, Reha S Erzurumlu, Dmitri B Papkovsky
BACKGROUND: Brain imaging methods are continually improving. Imaging of the cerebral cortex is widely used in both animal experiments and charting human brain function in health and disease. Among the animal models, the rodent cerebral cortex has been widely used because of patterned neural representation of the whiskers on the snout and relative ease of activating cortical tissue with whisker stimulation. NEW METHOD: We tested a new planar solid-state oxygen sensor comprising a polymeric film with a phosphorescent oxygen-sensitive coating on the working side, to monitor dynamics of oxygen metabolism in the cerebral cortex following sensory stimulation...
February 17, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28218720/time-concentration-and-ph-dependent-transport-and-uptake-of-anthocyanins-in-a-human-gastric-epithelial-nci-n87-cell-line
#4
Allison A Atnip, Gregory T Sigurdson, Joshua Bomser, M Mónica Giusti
Anthocyanins are the largest class of water soluble plant pigments and a common part of the human diet. They may have many potential health benefits, including antioxidant, anti-inflammatory, anti-cancer, and cardioprotective activities. However, anthocyanin metabolism is not well understood. Studies suggest that anthocyanins absorption may occur in the stomach, in which the acidic pH favors anthocyanin stability. A gastric epithelial cell line (NCI-N87) has been used to study the behavior of anthocyanins at a pH range of 3...
February 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28217306/sexual-function-of-patients-with-heart-failure-facts-and-numbers
#5
EDITORIAL
Tiny Jaarsma
Approximately 60% to 87% of patients with heart failure (HF) report sexual problems, and numbers as low as 31% of HF patients younger than 70 have normal sexual function. When compared with healthy elders, the amount of perceived sexual dysfunction might be similar (around 56%), but patients with HF are reporting more erectile dysfunction (ED) and also perceive that their HF symptoms (20%) or HF medication (10%) is the cause for their problems. The prevalence of ED is highly prevalent in men with cardiac disease and reported in up to 81% of cardiac patients, compared with 50% in the general older population...
February 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28216263/new-insights-into-iron-deficiency-and-iron-deficiency-anemia
#6
REVIEW
Clara Camaschella
Recent advances in iron metabolism have stimulated new interest in iron deficiency (ID) and its anemia (IDA), common conditions worldwide. Absolute ID/IDA, i.e. the decrease of total body iron, is easily diagnosed based on decreased levels of serum ferritin and transferrin saturation. Relative lack of iron in specific organs/tissues, and IDA in the context of inflammatory disorders, are diagnosed based on arbitrary cut offs of ferritin and transferrin saturation and/or marker combination (as the soluble transferrin receptor/ferritin index) in an appropriate clinical context...
February 13, 2017: Blood Reviews
https://www.readbyqxmd.com/read/28215815/influence-of-tramadol-on-acute-thermal-and-mechanical-cutaneous-nociception-in-dogs
#7
Alexandra F Schütter, Julia Tünsmeyer, Sabine B R Kästner
OBJECTIVE: The aim of the study was to evaluate the influence of tramadol on acute nociception in dogs. STUDY DESIGN: Experimental, blinded, randomized, crossover study. ANIMALS: Six healthy laboratory Beagle dogs. METHODS: Dogs received three treatments intravenously (IV): isotonic saline placebo (P), tramadol 1 mg kg(-1) (T1) and tramadol 4 mg kg(-1) (T4). Thermal thresholds were determined by ramped contact heat stimulation (0...
January 7, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28215167/chemical-modifications-of-ketoprofen-nsaid-in-search-of-better-lead-compounds-a-review-of-literature-from-2004-2016
#8
Gita Chawla, Chanda Ranjan, Anees A Siddiqui, Jagdish Kumar, Ankita Pathak
BACKGROUND: Ketoprofen, a potent anti-inflammatory, analgesic and anti-pyretic drug belonging to the propionic acid class was synthesized in 1968. Rapid absorption, simple metabolism, faster blood brain barrier crossing and high antinociceptive activity are the features responsible for its high use. But, free acidic moiety present in its structure is the major factor that declines its popularity by causing various gastric side effects .Many researchers have chemically modified this drug with the aim to discover an improved and safe NSAID candidate or a new drug with altered activity...
February 16, 2017: Anti-inflammatory & Anti-allergy Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28209485/effects-of-clozapine-on-adipokine-secretions-productions-and-lipid-droplets-in-3t3-l1-adipocytes
#9
Tomomi Tsubai, Akira Yoshimi, Yoji Hamada, Makoto Nakao, Hiroshi Arima, Yutaka Oiso, Yukihiro Noda
Clozapine, a second-generation antipsychotic (SGA), is a cause of side effects related to metabolic syndrome. The participation of serotonin 5-HT2C and histamine H1 receptors in the central nervous system has been reported as a mechanism of the weight gain caused by clozapine. In the present study, we investigated the direct pharmacological action of clozapine on the 3T3-L1 adipocytes and compared it to that of blonanserin, an SGA with low affinity for both receptors. Short-term exposure to clozapine decreased secretion and mRNA expression of leptin...
January 28, 2017: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/28207880/skeletal-muscle-metabolic-adaptations-to-endurance-exercise-training-are-attainable-in-mice-with-simvastatin-treatment
#10
William M Southern, Anna S Nichenko, Daniel D Shill, Corey C Spencer, Nathan T Jenkins, Kevin K McCully, Jarrod A Call
We tested the hypothesis that a 6-week regimen of simvastatin would attenuate skeletal muscle adaptation to low-intensity exercise. Male C57BL/6J wildtype mice were subjected to 6-weeks of voluntary wheel running or normal cage activities with or without simvastatin treatment (20 mg/kg/d, n = 7-8 per group). Adaptations in in vivo fatigue resistance were determined by a treadmill running test, and by ankle plantarflexor contractile assessment. The tibialis anterior, gastrocnemius, and plantaris muscles were evaluated for exercised-induced mitochondrial adaptations (i...
2017: PloS One
https://www.readbyqxmd.com/read/28202999/-changes-of-productions-of-energy-metabolism-in-masseter-of-rats-induced-by-occlusal-interference
#11
X X Xu, Y Cao, K Y Fu, Q F Xie
OBJECTIVE: To investigate the effect of occlusal interference on the energy metabolism of masticatory muscle by studying the changes of adenosine triphosphate (ATP), adenosine diphosphate (ADP), inosine monophosphate (IMP), phosphocreatine, creatine, lactate and pH level in masseter muscles of rats after occlusal interference. METHODS: Fifty male Sprague-Dawley rats were randomly assigned into experimental group (n=40) and control group (n=10). In experimental group, 0...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28197865/revision-of-biliopancreatic-diversion-for-side-effects-or-insufficient-weight-loss-codification-of-a-new-procedure
#12
Valerio Ceriani, Ferdinando Pinna, Tiziana Lodi, Antonio E Pontiroli
PURPOSE: Addressing the problem of proctologic sequelae after Scopinaro's classical BPD, we elongated the common limb from 50 to 200 cm at the expense of the alimentary limb and simultaneously, with the aim of avoiding weight regain, reduced the gastric pouch from 500 to 40 ml. After increased experience with the new procedure, we observed a favourable tendency towards further weight loss. Thus, we subsequently extended the indication to the procedure to patients with unsatisfactory weight loss after Scopinaro's classical BPD (SBPD)...
February 14, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28196698/-when-and-how-prescribe-antipsychotics
#13
S Tebeka, G Airagnes, F Limosin
Antipsychotics are commonly prescribed in the general population since they have many indications. They can be used in acute care such as agitation or behavior disorders, or to treat more characterized psychiatric disorders like psychotic or mood disorders. Consequently, any practitioner will have to prescribe or renew a prescription of antipsychotics. These treatments require a benefit/risk balance assessment taking into account the specific context of each patient. Indeed, antipsychotics have many side effects, mainly neurological (extrapyramidal syndrome, dyskinesia, akathisia), metabolic and cardiac...
February 10, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/28194032/tumour-specific-pi3k-inhibition-via-nanoparticle-targeted-delivery-in-head-and-neck-squamous-cell-carcinoma
#14
Aviram Mizrachi, Yosi Shamay, Janki Shah, Samuel Brook, Joanne Soong, Vinagolu K Rajasekhar, John L Humm, John H Healey, Simon N Powell, José Baselga, Daniel A Heller, Adriana Haimovitz-Friedman, Maurizio Scaltriti
Alterations in PIK3CA, the gene encoding the p110α subunit of phosphatidylinositol 3-kinase (PI3Kα), are frequent in head and neck squamous cell carcinomas. Inhibitors of PI3Kα show promising activity in various cancer types, but their use is curtailed by dose-limiting side effects such as hyperglycaemia. In the present study, we explore the efficacy, specificity and safety of the targeted delivery of BYL719, a PI3Kα inhibitor currently in clinical development in solid tumours. By encapsulating BYL719 into P-selectin-targeted nanoparticles, we achieve specific accumulation of BYL719 in the tumour milieu...
February 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/28193195/assessing-the-burden-of-treatment-emergent-adverse-events-associated-with-atypical-antipsychotic-medications
#15
Pierre-Michel Llorca, Christophe Lançon, Ann Hartry, T Michelle Brown, Dana B DiBenedetti, Siddhesh A Kamat, Clément François
BACKGROUND: Treatment of schizophrenia and major depressive disorder (MDD) with atypical antipsychotics (AAPs) show improved efficacy and reduced side effect burden compared with older antipsychotic medications. However, a risk of treatment-emergent adverse events (TEAEs) remains. TEAEs are hard to quantify and perspectives on the importance of TEAEs differ across patients and between patients and physicians. The current study is a qualitative assessment that investigates TEAEs of AAPs from both patient and physician perspectives to provide better understanding of the occurrence and burden of TEAEs associated with these medications...
February 13, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28192990/dual-stimuli-activatable-oxidative-stress-amplifying-agent-as-a-hybrid-anticancer-prodrug
#16
Eunji Han, Byeongsu Kwon, Donghyuck Yoo, Changsun Kang, Gilson Khang, Dongwon Lee
Compared to normal cells, cancer cells have a higher level of reactive oxygen species (ROS) due to aberrant metabolism and disruption of redox homeostasis which drive their proliferation and promote progression and metastasis of cancers. The altered redox balance and biological difference between normal cells and cancer cells provide a basis for the development of anticancer agents which are able to generate pharmacological ROS insults to kill cancer cells preferentially. In this study, we report a new hybrid anticancer drug, termed OSamp, which undergoes esterase- and acid-catalyzed hydrolysis to deplete antioxidant glutathione (GSH) and generate ROS, simultaneously...
February 21, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28192881/stem-cell-biomaterials-and-growth-factors-therapy-for-hepatocellular-carcinoma
#17
REVIEW
Soleiman Jaferian, Maryam Soleymaninejad, Babak Negahdari, Ali Eatemadi
Hepatocellular carcinoma is an antecedent of liver illnesses, including viral hepatitis, alcohol abuse, or metabolic disease. Transforming growth factor-Beta (TGF-b) plays an important role in creating a favorable microenvironment for tumor cell growth via two major mechanisms: an intrinsic activity as an autocrine growth factor and an extrinsic activity by inducing microenvironment changes. Recently stem cell therapy as also been a promising and potential treatment for liver cancer and in addition signaling pathways like GF/GFR systems, SDF-1α/CXC4 ligand receptor interaction and PI3K/Akt signaling, and cytokines has been identified to regulate cell fate decisions, and can be utilized to positively influence cell therapy outcomes...
February 8, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28191538/lipodystrophy-hiv-related-and-fgf21-a-new-marker-to-follow-the-progression-of-lipodystrophy
#18
Stefano Benedini, Livio Luzi
Recently new evidence about fibroblast growth factor 21 (FGF21) highlights the opportunities to use this molecule in new pharmaceutical formulations to combat type 2 diabetes and metabolic syndrome. It is well known that HIV is per se a condition of insulin resistance and in particular the patient with HIV-related lipodystrophy has a condition strictly related to metabolic syndrome. Lipodystrophy is associated with severe metabolic side effects, including dyslipidemia, hepatic insulin resistance, and lipid oxidation impairment...
December 1, 2016: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28190433/seizures-in-the-critically-ill
#19
J Ch'ang, J Claassen
Critically ill patients with seizures are either admitted to the intensive care unit because of uncontrolled seizures requiring aggressive treatment or are admitted for other reasons and develop seizures secondarily. These patients may have multiorgan failure and severe metabolic and electrolyte disarrangements, and may require complex medication regimens and interventions. Seizures can be seen as a result of an acute systemic illness, a primary neurologic pathology, or a medication side-effect and can present in a wide array of symptoms from convulsive activity, subtle twitching, to lethargy...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28185575/integration-of-metabolomics-lipidomics-and-clinical-data-using-a-machine-learning-method
#20
Animesh Acharjee, Zsuzsanna Ament, James A West, Elizabeth Stanley, Julian L Griffin
BACKGROUND: The recent pandemic of obesity and the metabolic syndrome (MetS) has led to the realisation that new drug targets are needed to either reduce obesity or the subsequent pathophysiological consequences associated with excess weight gain. Certain nuclear hormone receptors (NRs) play a pivotal role in lipid and carbohydrate metabolism and have been highlighted as potential treatments for obesity. This realisation started a search for NR agonists in order to understand and successfully treat MetS and associated conditions such as insulin resistance, dyslipidaemia, hypertension, hypertriglyceridemia, obesity and cardiovascular disease...
November 22, 2016: BMC Bioinformatics
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