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https://www.readbyqxmd.com/read/29457989/propylthiouracil-induced-anti-neutrophil-cytoplasmic-antibody-associated-vasculitis-mimicking-kawasaki-disease
#1
Yoshihiro Aoki, Katsuhiko Kitazawa, Hironobu Kobayashi
Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is rare in children and is characterised as necrotising vasculitis predominantly affecting small and medium-sized vessels. Propylthiouracil (PTU), an antithyroid drug, has been implicated in drug-induced AAV. In contrast, Kawasaki disease (KD) is a common systemic vasculitis, typically observed in children, which affects the medium-sized vessels, including the coronary arteries. An 11-year-old girl who developed AAV while receiving PTU therapy for Graves' disease is described...
February 19, 2018: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/29457309/severe-intestinal-malabsorption-associated-with-ace-inhibitor-or-angiotensin-receptor-blocker-treatment-an-observational-cohort-study-in-germany-and-italy
#2
Peter Malfertheiner, Claudio Ripellino, Nazarena Cataldo
PURPOSE: The angiotensin II receptor blocker (ARB) olmesartan has been recently associated with sprue-like enteropathy (SLE), a gastrointestinal condition characterized by intestinal malabsorption (IM) and severe diarrhea. Whether the increased risk of SLE is substance-specific or a class effect involving all ARBs is uncertain. The aim of this study is to assess the risk of enteropathy associated with ARBs and angiotensin converting enzyme inhibitors (ACE-i) by using data from large administrative and claim databases...
February 19, 2018: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/29456831/early-afterdepolarisation-tendency-as-a-simulated-pro-arrhythmic-risk-indicator
#3
Beth McMillan, David J Gavaghan, Gary R Mirams
Drug-induced Torsades de Pointes (TdP) arrhythmia is of major interest in predictive toxicology. Drugs which cause TdP block the hERG cardiac potassium channel. However, not all drugs that block hERG cause TdP. As such, further understanding of the mechanistic route to TdP is needed. Early afterdepolarisations (EADs) are a cell-level phenomenon in which the membrane of a cardiac cell depolarises a second time before repolarisation, and EADs are seen in hearts during TdP. Therefore, we propose a method of predicting TdP using induced EADs combined with multiple ion channel block in simulations using biophysically-based mathematical models of human ventricular cell electrophysiology...
November 1, 2017: Toxicology Research
https://www.readbyqxmd.com/read/29454961/first-line-anti-tuberculosis-drugs-induce-hepatotoxicity-a-novel-mechanism-based-on-a-urinary-metabolomics-platform
#4
Jun Cao, Yijun Mi, Cuilin Shi, Yicong Bian, Chenrong Huang, Zhijian Ye, Linsheng Liu, Liyan Miao
Tuberculosis (TB) has become a global public health and social threat. As clinical first-line drugs, rifampicin and isoniazid used in combination with pyrazinamide and ethambutol (the HRZE regimen) usually induce hepatotoxicity. However, the mechanisms underlying this phenomenon remain unclear, and studying the metabolic impact of co-treating TB patients with the HRZE regimen can provide new hepatotoxicity evidence. In this study, urine metabolites from TB patients were profiled using a high-resolution ultra-performance liquid chromatography-mass spectrometry (UPLC-MS) platform...
February 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29453283/chemical-stresses-fail-to-mimic-the-unfolded-protein-response-resulting-from-luminal-load-with-unfolded-polypeptides
#5
Timothy J Bergmann, Ilaria Fregno, Fiorenza Fumagalli, Andrea Rinaldi, Francesco Bertoni, Paul J Boersema, Paola Picotti, Maurizio Molinari
The stress sensors ATF6, IRE1 and PERK monitor deviations from homeostatic conditions in the endoplasmic reticulum (ER), a protein biogenesis compartment of eukaryotic cells. Their activation elicits unfolded protein responses (UPR) to re-establish proteostasis. UPR have been extensively investigated in cells exposed to chemicals that activate ER stress sensors by perturbing calcium, N-glycans or redox homeostasis. Cell responses to variations in luminal load with unfolded proteins are, in contrast, poorly characterized...
February 16, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29451848/mr-imaging-of-atraumatic-muscle-disorders
#6
Edward Smitaman, Dyan V Flores, Catalina Mejía Gómez, Mini N Pathria
Atraumatic disorders of skeletal muscles include congenital variants; inherited myopathies; acquired inflammatory, infectious, or ischemic disorders; neoplastic diseases; and conditions leading to muscle atrophy. These have overlapping appearances at magnetic resonance (MR) imaging and are challenging for the radiologist to differentiate. The authors organize muscle disorders into four MR imaging patterns: (a) abnormal anatomy with normal signal intensity, (b) edema/inflammation, (c) mass, and (d) atrophy, highlighting each of their key clinical and imaging findings...
February 16, 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29449830/screening-for-ppar-non-agonist-ligands-followed-by-characterization-of-a-hit-am-879-with-additional-no-adipogenic-and-cdk5-mediated-phosphorylation-inhibition-properties
#7
Helder Veras Ribeiro Filho, Natália Bernardi Videira, Aline Villanova Bridi, Thais Helena Tittanegro, Fernanda Aparecida Helena Batista, José Geraldo de Carvalho Pereira, Paulo Sérgio Lopes de Oliveira, Marcio Chaim Bajgelman, Albane Le Maire, Ana Carolina Migliorini Figueira
Peroxisome proliferator-activated receptor gamma (PPARγ) is a member of a nuclear receptor superfamily and acts as a ligand-dependent transcription factor, playing key roles in maintenance of adipose tissue and in regulation of glucose and lipid homeostasis. This receptor is the target of thiazolidinediones, a class of antidiabetic drugs, which improve insulin sensitization and regulate glycemia in type 2 diabetes. Despite the beneficial effects of drugs, such as rosiglitazone and pioglitazone, their use is associated with several side effects, including weight gain, heart failure, and liver disease, since these drugs induce full activation of the receptor...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29449054/second-generation-antipsychotic-induced-mitochondrial-alterations-implications-for-increased-risk-of-metabolic-syndrome-in-patients-with-schizophrenia
#8
Giselli Scaini, João Quevedo, Dawn Velligan, David L Roberts, Henriette Raventos, Consuelo Walss-Bass
Metabolic syndrome (MetS) is seen more frequently in persons with schizophrenia than in the general population, and these metabolic abnormalities are further aggravated by second generation antipsychotic (SGA) drugs. Although the underlying mechanisms responsible for the increased prevalence of MetS among patients under SGA treatment are not well understood, alterations in mitochondria function have been implicated. We performed a comprehensive evaluation of the role of mitochondrial dysfunction in the pathophysiology of drug-induced MetS in schizophrenia...
February 12, 2018: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29447835/clay-eating-attenuates-lithium-based-taste-aversion-learning-in-rats-a-remedial-effect-of-kaolin-on-nausea
#9
Sadahiko Nakajima
Kaolin clay eating has been considered as a marker of nausea in rats, because a variety of treatments, which evoke nausea in humans, generate consumption of kaolin clay in rats. The present study with two experiments replicated kaolin clay ingestion induced by an injection of emetic lithium chloride (LiCl). The LiCl injection, however, did not generate eating of wooden objects in rats. The present study also provides a new finding that consumption of kaolin clay alleviates rats' taste aversion learning caused by an LiCl injection...
February 12, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29447641/flame-figures-in-linear-iga-bullous-dermatosis-a-novel-histopathologic-finding
#10
E Fulton, F Jan, M J Zimarowski
BACKGROUND: Linear IgA bullous dermatosis (LABD) is an autoimmune subepidermal blistering disease usually with a neutrophil rich inflammatory infiltrate, and characterized by linear IgA deposition at the basement membrane zone (BMZ), and neutrophil predominant dermal inflammation. We report a case of LABD with numerous eosinophils and flame figure formation, a unique histopathologic finding not previously reported. A 69-year-old woman presented with a rapidly progressive, intensely pruritic rash over forearms, breasts, axillae, hips, and thighs...
November 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/29446988/diagnosing-tongue-base-obstruction-in-pierre-robin-sequence-infants-sleep-vs-awake-endoscopy
#11
Jake J Lee, Matthew D Ford, Allison B Tobey, Noel Jabbour
OBJECTIVE: To investigate whether awake endoscopy can diagnose base-of-tongue obstruction as reliably as sleep endoscopy in infants with Pierre Robin sequence (PRS). DESIGN: The study was retrospective with the clinicians blinded to patient identity. Endoscopy findings were assessed and measured by the performing pediatric otolaryngologist. SETTING: Tertiary care children's hospital. PATIENTS: All infants with PRS managed between January 2005 and July 2015 were included...
January 1, 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29445527/drug-induced-sleep-endoscopy-its-role-in-evaluation-of-the-upper-airway-obstruction-and-patient-selection-for-surgical-and-non-surgical-treatment
#12
REVIEW
Bhik Kotecha, Andrea De Vito
Sleep related breathing disorders cause obstruction of the upper airway which can be alleviated by continuous positive airway pressure (CPAP) therapy, oral devices or surgical intervention. Non-surgical treatment modalities are not always accepted by patients and in order to attain successful surgical outcomes, evaluation of the upper airway is necessary to carefully select the patients who would benefit from surgery. There are numerous techniques available to assess the upper airway obstruction and these include imaging, acoustic analysis, pressure transducer recording and endoscopic evaluation...
January 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29444618/pathophysiology-of-drug-induced-weight-and-metabolic-effects-findings-from-an-rct-in-healthy-volunteers-treated-with-olanzapine-iloperidone-or-placebo
#13
Jacob S Ballon, Utpal B Pajvani, Laurel Es Mayer, Zachary Freyberg, Robin Freyberg, Ignacio Contreras, Michael Rosenbaum, Rudolph L Leibel, Jeffrey A Lieberman
Second generation antipsychotics are prescribed for an increasing number of psychiatric conditions, despite variable associations with weight gain, dyslipidemia, and impaired glucose tolerance. The mechanism(s) of the apparent causal relationships between these medications and metabolic effects have been inadequately defined and are potentially confounded by genetic risk of mental illness, attendant lifestyle, and concomitant medications. Therefore, we conducted a study in which 24 healthy volunteers were randomized to olanzapine (highly weight-gain liability), iloperidone (less weight-gain liability), or placebo treatment for 28 days under double-blind conditions...
February 1, 2018: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/29443497/prediction-of-drug-induced-nephrotoxicity-with-a-hydroxyl-radical-and-caspase-light-up-dual-signal-nanoprobe
#14
Yuling Tong, Xitong Huang, Mi Lu, Bo-Yang Yu, Jiangwei Tian
The development of well-designed nanoprobes for specific imaging of multiple biomarkers in renal cells will afford beneficial information related to the transmutation process of drug-induced kidney injury (DIKI). However, the most reported nanoprobes for DIKI detection were dependent on single-signal output and lack of kidney targeting. In this work, we reported a renal cell targeting and dual-signal nanoprobe by encapsulating Brite 670 and Dabcyl-KFFFDEVDK-FAM into low molecular weight chitosan nanoparticle...
February 14, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29443401/pediatric-intestinal-failure-associated-liver-disease-challenges-in-identifying-clinically-relevant-biomarkers
#15
Kathleen M Gura, Andrew E Mulberg, Paul D Mitchell, John Yap, Clara Y Kim, Minjun Chen, Alexis Potemkin, Mark Puder
BACKGROUND: Intestinal failure-associated liver disease (IFALD) is complex and diagnosed by concurrent use of parenteral nutrition, clinical presentation, and alterations in hepatic biomarkers exclusive of other causes of liver disease. In comparison with individual measures, composite biomarkers may provide a more effective means for assessing disease progression and response to treatment than single parameters. Since IFALD is considered by some to be a type of drug-induced liver injury (DILI), those diagnostic criteria could potentially be used in this population...
February 2018: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29441946/perphenazine-and-prochlorperazine-induce-concentration-dependent-loss-in-human-glioblastoma-cells-viability
#16
M Otręba, E Buszman
Phenothiazine derivatives possess biological properties very useful for cancer therapy, such as antiemetic and sedative activity as well as good blood-brain barrier permeability. Our goal was to determine if perphenazine and prochlorperazine are possessing cytotoxic activity towards U87-MG cells. It has been shown that the analyzed drugs induce concentration-dependent loss in cell viability, what correlates with their chemical structure. The calculated EC50 values for perphenazine (0.98 μM) and prochlorperazine (0...
January 2, 2018: Die Pharmazie
https://www.readbyqxmd.com/read/29441683/cardiovascular-safety-of-prokinetic-agents-a-focus-on-drug-induced-arrhythmias
#17
REVIEW
J R Giudicessi, M J Ackerman, M Camilleri
BACKGROUND: Gastrointestinal sensorimotor dysfunction underlies a wide range of esophageal, gastric, and intestinal motility and functional disorders that collectively constitute nearly half of all referrals to gastroenterologists. As a result, substantial effort has been dedicated toward the development of prokinetic agents intended to augment or restore normal gastrointestinal motility. However, the use of several clinically efficacious gastroprokinetic agents, such as cisapride, domperidone, erythromycin, and tegaserod, is associated with unfavorable cardiovascular safety profiles, leading to restrictions in their use...
February 14, 2018: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29441295/a-19-year-retrospective-study-of-adverse-drug-reactions-to-multidrug-therapy-in-leprosy-requiring-a-change-in-regime
#18
Sukumaran Pradeep Nair
Background and Aims: Multidrug therapy (MDT) in leprosy has brought the prevalence of leprosy to elimination levels. However, these drugs are not without toxicity. The primary aim of this study was to find the prevalence of adverse drug reactions (ADR) to MDT and the secondary aim to study the clinical features of these drug reactions. Materials and Methods: This is a19-year retrospective descriptive study of all new leprosy cases with ADR to MDT, requiring a change in regime...
January 2018: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/29441165/propylthiouracil-induced-anca-negative-cutaneous-small-vessel-vasculitis
#19
Aliaksandr Trusau, Michael L Brit
Propylthiouracil (PTU) is a commonly used medication for the treatment of hyperthyroidism. PTU is known to cause different adverse reactions including autoimmune syndromes. PTU-induced autoimmune syndromes can be classified into drug-induced lupus or drug-induced vasculitis. Differential diagnoses could be very challenging. PTU-induced vasculitis is more common than PTU-induced lupus, and has a higher risk of morbidity and mortality. Usually it is limited to the skin in a form of cutaneous leukocytoclastic vasculitis, but may also affect organs including kidneys and lungs...
2018: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/29440948/orofacial-manifestations-of-adverse-drug-reactions-a-review-study
#20
REVIEW
Sedigheh Bakhtiari, Marziye Sehatpour, Hamed Mortazavi, Mahin Bakhshi
Background: Adverse reaction to medication is common and may have a variety of clinical manifestations in the oral cavity. The present review paper aimed to describe adverse drug reactions (ADRs) which might be encountered by dental practitioners in every discipline. Methods: In this narrative review article, the specialized databases such as PubMed, PubMed Central, MEDLINE, EBSCO, Science Direct, Scopus, and reference books from the years 2000-2016 were used to find relevant documents by using MeSH terms: Adverse Drug Reaction, Drug induced, Medication Related, Mouth, Oral Manifestation, Tooth, Hard Tissue, Soft Tissue...
2018: Clujul Medical (1957)
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