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https://www.readbyqxmd.com/read/29738027/hydralazine-associated-adverse-events-a-report-of-two-cases-of-hydralazine-induced-anca-vasculitis
#1
Roman Zuckerman, Mayurkumar Patel, Eric J Costanzo, Harry Dounis, Rany Al Haj, Seyedehsara Seyedali, Arif Asif
Hydralazine is a direct-acting vasodilator, which has been used in treatment for hypertension (HTN) since the 1950s. While it is well known to cause drug-induced lupus (DIL), recent reports are indicating the emergence of the drug-induced anti-neutrophil cytoplasmic antibody (ANCA) associated vasculitis (DIV). Herein, we describe two patients (aged 57 and 87 years) who presented with severe acute kidney injury (AKI), proteinuria, and hematuria. Both were receiving hydralazine for the treatment of hypertension...
May 7, 2018: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/29678521/inhibitory-effects-of-drugs-on-the-metabolic-activity-of-mouse-and-human-aldehyde-oxidases-and-influence-on-drug-drug-interactions
#2
Naoki Takaoka, Seigo Sanoh, Katsuhiro Okuda, Yaichiro Kotake, Go Sugahara, Ami Yanagi, Yuji Ishida, Chise Tateno, Yoshitaka Tayama, Kazumi Sugihara, Shigeyuki Kitamura, Mami Kurosaki, Mineko Terao, Enrico Garattini, Shigeru Ohta
As aldehyde oxidase (AOX) plays an emerging role in drug metabolism, understanding its significance for drug-drug interactions (DDI) is important. Therefore, we tested 10 compounds for species-specific and substrate-dependent differences in the inhibitory effect of AOX activity using genetically engineered HEK293 cells over-expressing human AOX1, mouse AOX1 or mouse AOX3. The IC50 values of 10 potential inhibitors of the three AOX enzymes were determined using phthalazine and O6 -benzylguanine as substrates...
April 17, 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29657868/outcomes-of-hydralazine-induced-renal-vasculitis
#3
Homa Timlin, Jason E Liebowitz, Khusleen Jaggi, Duvuru Geetha
Objective: Hydralazine has been implicated as an etiologic agent for lupus-like syndrome and vasculitis. Hydralazine-induced vasculitis frequently affects the kidney, but the long-term renal outcomes in these patients have not yet been studied. Methods: Patients who had a diagnosis of ANCA-associated vasculitis (AAV) and were on hydralazine at the time of AAV diagnosis were included in this retrospective cohort study. Clinical and laboratory data were obtained from the review of medical records...
March 2018: European Journal of Rheumatology
https://www.readbyqxmd.com/read/29628139/drug-repurposing-in-kidney-disease
#4
REVIEW
Usha Panchapakesan, Carol Pollock
Drug repurposing, is the re-tasking of known medications for new clinical indications. Advantages, compared to de novo drug development, include reduced cost and time to market plus the added benefit of a known pharmacokinetic and safety profiles. Suitable drug candidates are identified through serendipitous observations, data mining, or increased understanding of disease mechanisms. This review highlights drugs suited for repurposing in kidney disease. The main cause of mortality in patients with chronic kidney disease is cardiovascular disease...
April 6, 2018: Kidney International
https://www.readbyqxmd.com/read/29615437/refinement-of-in-vitro-methods-for-identification-of-aldehyde-oxidase-substrates-reveals-novel-metabolites-of-kinase-inhibitors
#5
Ryan A Dick
An assay procedure was developed to identify AO substrates that leverages the capabilities of high resolution mass spectrometry to simultaneously monitor parent loss and formation of hydroxylated metabolite over time in incubations with liver cytosol. By incorporating metabolite monitoring, false positives resulting from metabolism by other cytosolic enzymes or processes were decreased. A diverse set of 34 kinase inhibitors containing AO-substrate motifs was screened and 35% of the compounds were identified as human AO substrates...
April 3, 2018: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/29606640/timing-of-postdischarge-follow-up-and-medication-adherence-among-patients-with-heart-failure
#6
Leslie L Chang, Haolin Xu, Adam D DeVore, Roland A Matsouaka, Clyde W Yancy, Gregg C Fonarow, Larry A Allen, Adrian F Hernandez
BACKGROUND: Medication adherence improves outcomes for patients with heart failure, but adherence rates remain low. We examined the association between earlier postdischarge follow-up and medication adherence. METHODS AND RESULTS: We performed a retrospective cohort study of patients ≥65 years who were hospitalized for heart failure, covered by Medicare Part D, and discharged alive from April 2006 to October 2012 using the Get With The Guidelines-Heart Failure Registry linked to Medicare claims...
April 1, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29595368/the-care-of-patients-using-methamphetamine-in-the-emergency-department-perception-of-nurses-residents-and-faculty
#7
John R Richards, J Adam Hawkins, Eric W Acevedo, Erik G Laurin
BACKGROUND: To determine differences in perception between nurses, residents, and faculty regarding characteristics and treatment of patients who use methamphetamine (meth). METHODS: Survey study performed at an urban, university Level I trauma medical center. RESULTS: 80 nurses, 39 residents, and 45 faculty completed the survey. All groups agreed meth was a significant problem nationwide and in our emergency department (ED). Nurses estimated 33% of their patients used meth, which differed from residents (18%) and faculty (15%)...
March 29, 2018: Substance Abuse
https://www.readbyqxmd.com/read/29534238/targeting-epigenetic-dna-and-histone-modifications-to-treat-kidney-disease
#8
Miguel Fontecha-Barriuso, Diego Martin-Sanchez, Olga Ruiz-Andres, Jonay Poveda, Maria Dolores Sanchez-Niño, Lara Valiño-Rivas, Marta Ruiz-Ortega, Alberto Ortiz, Ana Belén Sanz
Epigenetics refers to heritable changes in gene expression patterns not caused by an altered nucleotide sequence, and includes non-coding RNAs and covalent modifications of DNA and histones. This review focuses on functional evidence for the involvement of DNA and histone epigenetic modifications in the pathogenesis of kidney disease and the potential therapeutic implications. There is evidence of activation of epigenetic regulatory mechanisms in acute kidney injury (AKI), chronic kidney disease (CKD) and the AKI-to-CKD transition of diverse aetiologies, including ischaemia-reperfusion injury, nephrotoxicity, ureteral obstruction, diabetes, glomerulonephritis and polycystic kidney disease...
March 9, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29523265/criteria-based-audit-in-the-management-of-eclampsia-at-a-public-sector-tertiary-care-hospital-in-karachi-pakistan
#9
Paras Ali, Sofia Butt, Nazli Hossain
OBJECTIVE: To evaluate the practice of Eclampsia management at a tertiary care public sector hospital. PATIENTS & METHODS: We conducted criteria based audit of 93 Eclampsia patients admitted in Gynae unit III, Civil hospital and Dow University of Health Sciences Karachi, between 1st January 2016 and 31st December 2016. Management practices were assessed using evidence-based criteria for care. A clinical criteria for standards of care were developed from Royal College of Obstetrician & Gynecologist (RCOG/NICE) guidelines, World Health Organization (WHO) manual, twelve criteria were identified for the audit purpose...
January 2018: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29519741/hydralazine-associated-vasculitis-overlapping-features-of-drug-induced-lupus-and-vasculitis
#10
Bharat Kumar, Jennifer Strouse, Melissa Swee, Petar Lenert, Manish Suneja
INTRODUCTION: Hydralazine is an antihypertensive medication that has been associated with drug-induced lupus erythematosus (DIL) as well as ANCA-associated vasculitis (AAV). Although rare, early diagnosis is critical since drug cessation is the mainstay of therapy. This retrospective study aims to characterize the clinical, laboratory, and histopathologic features of this disease. METHODS: Once approval was obtained from the Institutional Review Board at the University of Iowa, all patients carrying a diagnosis of vasculitis (ICD9 code: 447...
January 12, 2018: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/29500923/regulation-of-hypoxia-inducible-factor-prolyl-hydroxylase-binding-domain-proteins-1-by-ppar%C3%AE-and-high-salt-diet
#11
Ezinne Ozurumba, Omana Mathew, Katsuri Ranganna, Myung Choi, Adebayo Oyekan
BACKGROUND: Hypoxia inducible factor (HIF)/prolyl hydroxylase domain (PHD)-containing proteins are involved in renal adaptive response to high salt (HS). Peroxisome proliferator activated receptor alpha (PPARα), a transcription factor involved in fatty acid oxidation is implicated in the regulation of renal function. As both HIF-1α/PHD and PPARα contribute to the adaptive changes to altered oxygen tension, this study tested the hypothesis that PHD-induced renal adaptive response to HS is PPARα-dependent...
March 28, 2018: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/29490666/differential-effect-of-angiotensin-ii-and-blood-pressure-on-hippocampal-inflammation-in-mice
#12
M Florencia Iulita, Diane Vallerand, Mélissa Beauvillier, Nathalie Haupert, Corinne A Ulysse, Audrey Gagné, Nathalie Vernoux, Sonia Duchemin, Michaël Boily, Marie-Ève Tremblay, Hélène Girouard
BACKGROUND: Angiotensin II (Ang II), a peptide hormone involved in the development of hypertension, causes systemic and cerebral inflammation, affecting brain regions important for blood pressure control. The cause-and-effect relationship between hypertension and inflammation is two-way, but the role of blood pressure in the induction of cerebral inflammation is less clear. The vulnerability of specific brain regions, particularly those important for memory, is also of interest. METHODS: We used molecular biology approaches, immunohistochemistry, and electron microscopy to examine the interdependence between the hypertensive and pro-inflammatory effects of Ang II...
February 28, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29474397/beyond-signal-functions-in-global-obstetric-care-using-a-clinical-cascade-to-measure-emergency-obstetric-readiness
#13
John N Cranmer, Julia Dettinger, Kimberly Calkins, Minnie Kibore, Onesmus Gachuno, Dilys Walker
BACKGROUND: Globally, the rate of reduction in delivery-associated maternal and perinatal mortality has been slow compared to improvements in post-delivery mortality in children under five. Improving clinical readiness for basic obstetric emergencies is crucial for reducing facility-based maternal deaths. Emergency readiness is commonly assessed using tracers derived from the maternal signal functions model. OBJECTIVE-METHOD: We compare emergency readiness using the signal functions model and a novel clinical cascade...
2018: PloS One
https://www.readbyqxmd.com/read/29469750/a-case-of-probable-trimethoprim-sulfamethoxazole-induced-circulating-antineutrophil-cytoplasmic-antibody-positive-small-vessel-vasculitis
#14
Therese Woodring, Ronnie Abraham, Stephanie Frisch
Cutaneous leukocytoclastic vasculitis (LCV) can occur as skin-limited disease or as part a systemic vasculitis. Appropriate workup includes the evaluation of antineutrophil cytoplasmic antibodies (ANCAs), with a positive titer raising concern for the associated primary vasculitides including microscopic polyangiitis (MPA), granulomatosis with polyangiitis (GPA), or eosinophilic granulomatosis with polyangiitis (EGPA). In the absence of systemic findings, however, a drug etiology must also be considered. Tumor necrosis factor (TNF) inhibitors, propylthiouracil, levamisole-adulterated cocaine, hydralazine, and minocycline have been previously documented to induce ANCA-positive vasculitis (APV), which may present with conspicuously high ANCA titers...
August 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/29423950/guideline-directed-medical-therapy-and-survival-following-hospitalization-in-patients-with-heart-failure
#15
Richard H Tran, Ahmed Aldemerdash, Patricia Chang, Carla A Sueta, Brystana Kaufman, Josephine Asafu-Adjei, Orly Vardeny, Eliza Daubert, Khalid A Alburikan, Anna M Kucharska-Newton, Sally C Stearns, Jo E Rodgers
BACKGROUND: Modification of guideline-directed medical therapy (GDMT) in hospitalized patients with heart failure (HF) has not been extensively evaluated. METHODS: The community surveillance arm of the Atherosclerosis Risk in Communities Study identified 6959 HF hospitalizations from 2005-2011. Predictors of GDMT modification and survival were assessed using multivariable logistic regression and Cox proportional hazards models. RESULTS: For 5091 hospitalizations, patient mean age was 75 years, 53% were female, 69% were white, and 81% had acute decompensated heart failure (ADHF)...
April 2018: Pharmacotherapy
https://www.readbyqxmd.com/read/29420396/use-of-antihypertensive-medications-during-delivery-hospitalizations-complicated-by-preeclampsia
#16
Kirsten L Cleary, Zainab Siddiq, Cande V Ananth, Jason D Wright, Gloria Too, Mary E DʼAlton, Alexander M Friedman
OBJECTIVE: To evaluate temporal trends in use of antihypertensive medications during delivery hospitalizations complicated by preeclampsia and risk of maternal stroke over the same time period. METHODS: The Perspective database was used to perform a retrospective cohort study evaluating antihypertensive drugs dispensed during delivery hospitalizations complicated by preeclampsia from 2006 to the first quarter of 2015. Medications evaluated included nifedipine, hydralazine, and oral and intravenous labetalol...
March 2018: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29414104/acrolein-mediated-neuronal-cell-death-and-alpha-synuclein-aggregation-implications-for-parkinson-s-disease
#17
Abeje Ambaw, Lingxing Zheng, Mitali A Tambe, Katherine E Strathearn, Glen Acosta, Scott A Hubers, Fang Liu, Seth A Herr, Jonathan Tang, Alan Truong, Elwood Walls, Amber Pond, Jean-Christophe Rochet, Riyi Shi
Growing evidence suggests that oxidative stress plays a critical role in neuronal destruction characteristic of Parkinson's disease (PD). However, the molecular mechanisms of oxidative stress-mediated dopaminergic cell death are far from clear. In the current investigation, we tested the hypothesis that acrolein, an oxidative stress and lipid peroxidation (LPO) product, is a key factor in the pathogenesis of PD. Using a combination of in vitro, in vivo, and cell free models, coupled with anatomical, functional, and behavioral examination, we found that acrolein was elevated in 6-OHDA-injected rats, and behavioral deficits associated with 6-OHDA could be mitigated by the application of the acrolein scavenger hydralazine, and mimicked by injection of acrolein in healthy rats...
April 2018: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/29329804/a-rapid-and-sensitive-fluorometric-method-for-determination-of-aldehyde-oxidase-activity
#18
Nancy Apenova, Hui Peng, Markus Hecker, Markus Brinkmann
Previous research has characterized the important role of aldehyde oxidases (AOX) in biotransformation of N-heterocyclic therapeutic drugs and environmental contaminants in mammals. Research pertaining to AOX activity in non-mammalian vertebrates, however, is scarce, despite its biological role as a potentially important metabolic pathway for xenobiotics. One of the limiting factors of research on AOX is that available photometric methods are relatively insensitive, limited in throughput, and prone to cross-reactivity from other enzymes...
February 15, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29164516/mineralocorticoid-receptor-antagonism-protects-the-aorta-from-vascular-smooth-muscle-cell-proliferation-and-collagen-deposition-in-a-rat-model-of-adrenal-aldosterone-producing-adenoma
#19
Yongji Yan, Chao Wang, Yiqin Lu, Huijie Gong, Zhun Wu, Xin Ma, Hongzhao Li, Baojun Wang, Xu Zhang
The number of patients with adrenal aldosterone-producing adenomas (APAs) has gradually increased. However, even after adenoma resection, some patients still suffer from high systolic blood pressure (SBP), which is possibly due to great arterial remodeling. Moreover, mineralocorticoid receptors (MRs) were found to be expressed in vascular smooth muscle cells (VSMCs). This study aims to determine whether MR antagonism protects the aorta from aldosterone-induced aortic remolding. Male rats were subcutaneously implanted with an osmotic minipumps and randomly divided into four groups: control; aldosterone (1 μg/h); aldosterone plus a specific MR antagonist, eplerenone (100 mg/kg/day); and aldosterone plus a vasodilator, hydralazine (25 mg/kg/day)...
February 2018: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29132172/can-screening-and-confirmatory-testing-in-the-management-of-patients-with-primary-aldosteronism-be-improved
#20
Michael Stowasser, Ashraf Ahmed, Zeng Guo, Martin Wolley, Jacobus Ungerer, Brett McWhinney, Marko Poglitsch, Richard Gordon
Widespread application of the plasma aldosterone/renin ratio (ARR) as a screening test has led to the recognition that primary aldosteronism (PA) is the most common specifically treatable and potentially curable form of hypertension, accounting for 5-10% of patients. Maximal detection requires accurate diagnostic approaches and awareness and control of factors that confound results, including most antihypertensives, posture, time of day, dietary salt, and plasma potassium. Recent studies have revealed potential for false positives in patients on beta-adrenoceptor blockers, and, when direct renin concentration (but not plasma renin activity) is used to measure renin, in women during the luteal phase of the menstrual cycle or receiving estrogen-containing contraceptives or hormonal replacement therapy...
December 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
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