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https://www.readbyqxmd.com/read/28718873/clinical-features-of-drug-reaction-with-eosinophilia-and-systemic-symptoms-dress-syndrome-a-study-of-25-patients-in-korea
#1
Jin Y Lee, Suh-Young Lee, Ji E Hahm, Jae W Ha, Chul W Kim, Sang S Kim
BACKGROUND: Drug reaction with eosinophilia and systemic symptoms (DRESS) syndrome is a rare adverse drug reaction. This study aimed to evaluate the incidence of association with individual drugs, clinical manifestations, disease course, and outcomes of DRESS. METHODS: Using the criteria of the European Registry of Severe Cutaneous Adverse Reactions (RegiSCAR), the medical records of 25 patients diagnosed with DRESS between 2006 and 2015 were retrospectively reviewed...
July 18, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28711969/hyperuricemia-is-associated-with-an-increased-prevalence-of-paroxysmal-atrial-fibrillation-in-patients-with-type-2-diabetes-referred-for-clinically-indicated-24-h-holter-monitoring
#2
A Mantovani, R Rigolon, A Civettini, B Bolzan, G Morani, S Bonapace, C Dugo, G Zoppini, E Bonora, G Targher
PURPOSE: Several studies have reported an association between hyperuricemia and increased risk of permanent atrial fibrillation (AF) in patients with and without type 2 diabetes mellitus (T2DM). Currently, no published data are available on the relationship between hyperuricemia and risk of paroxysmal AF. METHODS: We retrospectively evaluated 245 T2DM outpatients without pre-existing AF, cancer, cirrhosis and end-stage renal disease, who underwent a 24-h ECG-Holter monitoring for various clinical indications...
July 15, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28709129/dissolution-assessment-of-allopurinol-immediate-release-tablets-by-near-infrared-spectroscopy
#3
Jelena Smetiško, Snežana Miljanić
The purpose of this study was to develop a NIR spectroscopic method for assessment of drug dissolution from allopurinol immediate release tablets. Thirty three different batches of allopurinol immediate release tablets containing constant amount of the active ingredient, but varying in excipients content and physical properties were introduced in a PLS calibration model. Correlating allopurinol dissolution reference values measured by the routinely used UV/Vis method, with the data extracted from the NIR spectra, values of correlation coefficient, bias, slope, residual prediction determination and root mean square error of prediction (0...
July 1, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28700181/-hyperuricemia-and-gene-mutations-a-case-report
#4
Fabio Tattoli, Daniela Falconi, Ornella De Prisco, Gherzi Maurizio, Federico Marazzi, Marita Marengo, Ilaria Serra, Michela Tamagnone, Luca Cordero di Montezemolo, Barbara Pasini, Marco Formica
Hyperuricemia is frequently found in nephrology. The case presented may be useful to clarify some pathogenetic aspects. It is a patient of 18 years, hyperuricaemic. Non-consanguineous parents, hyperuricemia in the paternal line, not neuropsychiatric disorders in the family. Delay in neuromotor acquisitions, average intellectual disabilities, anxiety disorder, obsessive-compulsive personality traits. Normal renal function and renal ultrasound. Evidence of hyperuricemia in 2015. Never gouty episodes and / or lithiasis, initiated allopurinol 100 mg on alternate days, with no side effects, urea in the control range, slightly below normal uricuria...
June 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28693909/synthesis-and-evaluation-of-1-phenyl-1h-1-2-3-triazole-4-carboxylic-acid-derivatives-as-xanthine-oxidase-inhibitors
#5
Ting-Jian Zhang, Qing-Xia Wu, Song-Ye Li, Lin Wang, Qi Sun, Yi Zhang, Fan-Hao Meng, Hua Gao
This study mainly focused on the modification of the X(2) position in febuxostat analogs. A series of 1-phenyl-1H-1,2,3-triazole-4-carboxylic acid derivatives (1a-s) with an N atom occupying the X(2) position was designed and synthesized. Evaluation of their inhibitory potency in vitro on xanthine oxidase indicated that these compounds exhibited micromolar level potencies, with IC50 values ranging from 0.21µM to 26.13μM. Among them, compound 1s (IC50=0.21μM) showed the most promising inhibitory effects and was 36-fold more potent than allopurinol, but was still 13-fold less potent than the lead compound Y-700, which meant that a polar atom fused at the X(2) position could be unfavorable for potency...
June 23, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28689430/current-and-future-therapies-for-gout
#6
Tristan Pascart, Pascal Richette
Gout is a common disease responsible for recurrent flares triggered by the deposition of monosodium urate crystals secondary to longstanding hyperuricaemia. The management of gout implies both the treatment of flares and the treatment of hyperuricaemia itself. Recent improvement in the understanding of the disease led to the development of new drugs. Areas covered: This review covers data related to 'old' treatments of flares and hyperuricaemia, evidence on the recently approved drugs and emerging therapies in development...
July 10, 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28682028/-the-uric-acid-cardio-nephropathy
#7
Francesca Viazzi, Barbara Bonino, Francesca Cappadona, Roberto Pontremoli
Uric acid is a product of purine catabolism formed by the activity of xanthine-oxidase and prevalently excreted by the kidney. In vivo, urate is known to have both an anti- or pro-oxidant role depending on several biological conditions. New evidence suggests that chronic hyperuricemia can contribute to hypertension development, kidney disease and cardiovascular risk. The pathophysiologic mechanisms are various, such as endothelial dysfunction and oxidative stress, vasoconstriction and stimulation of renin angiotensin system...
March 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28678861/ecstasy-induces-reactive-oxygen-species-kidney-water-absorption-and-rhabdomyolysis-in-normal-rats-effect-of-n-acetylcysteine-and-allopurinol-in-oxidative-stress-and-muscle-fiber-damage
#8
Ana C de Bragança, Regina L M Moreau, Thales de Brito, Maria H M Shimizu, Daniele Canale, Denise A de Jesus, Ana M G Silva, Pedro H Gois, Antonio C Seguro, Antonio J Magaldi
BACKGROUND: Ecstasy (Ec) use produces hyperthermia, excessive sweating, intense thirst, an inappropriate antidiuretic hormone secretion (SIADH) and a multisystemic toxicity due to oxidative stress (OS). Intense thirst induces high intake of pure water, which associated with SIADH, usually develops into acute hyponatremia (Hn). As Hn is induced rapidly, experiments to check if Ec acted directly on the Inner Medullary Collecting Ducts (IMCD) of rats were conducted. Rhabdomyolysis and OS were also studied because Ec is known to induce Reactive Oxygen Species (ROS) and tissue damage...
2017: PloS One
https://www.readbyqxmd.com/read/28678626/optimising-use-of-thiopurines-in-inflammatory-bowel-disease
#9
Robin J Dart, Peter M Irving
Thiopurines are central to inflammatory bowel disease (IBD) therapeutics, either as monotherapy or in combination with newer biologic therapies, however it is only recently that focus has increased on improving effectiveness and tolerability through optimisation. Areas covered: We review the role of thiopurines in IBD and the importance of the timing of initiation of therapy. Drug metabolism and pharmacogenetics have increasingly played a role in determining dosing and dose optimisation and we review the rationale for this in both thiopurine monotherapy and in combination with biologic agents...
July 12, 2017: Expert Review of Clinical Immunology
https://www.readbyqxmd.com/read/28676018/can-serum-uric-acid-lowering-therapy-contribute-to-the-prevention-or-treatment-of-nonalcoholic-fatty-liver-disease
#10
Paschalis Paschos, Vasilios G Athyros, Achilleas Tsimperidis, Anastasia Katsoula, Nikolaos Grammatikos, Olga Giouleme
Nonalcoholic fatty liver disease (NAFLD), the most common chronic liver disease in Western countries with potential progression to nonalcoholic steatohepatitis (NASH) and cirrhosis, is associated with cardiovascular disease (CVD) mortality. Several studies have reported a relationship between uric acid and NAFLD/NASH and it seems that serum uric acid (SUA) is a significant independent factor for the development of NAFLD. Potential mediating mechanisms include insulin resistance, endothelial dysfunction, and activation of inflammasome, especially NLRP3...
June 20, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/28658988/updates-on-the-treatment-of-gout-including-a-review-of-updated-treatment-guidelines-and-use-of-small-molecule-therapies-for-difficult-to-treat-gout-and-gout-flares
#11
Rose Soskind, Daniel T Abazia, Mary Barna Bridgeman
Gout is a rheumatologic condition associated with elevated serum uric acid levels and deposition of monosodium urate crystals in joints and soft tissues. Areas covered: In this article, we describe the role of currently available drug therapies for managing acute gout flares and used in reducing serum urate levels. Further, we explore the role of novel small molecular therapies and biologic agents in the treatment of refractory or severe gout symptoms. A literature search of MEDLINE and MEDLINE In-Process & Other Non-Indexed Citations Databases (1996-June 2017) was conducted utilizing the key words 'gout', 'interleukin-1 inhibitors', 'acute gout', 'gout treatment', 'urate lowering therapies', 'hyperuricemia', 'colchicine', 'pegloticase', 'lesinurad', 'xanthine oxidase', 'xanthine oxidase inhibitors', 'allopurinol', 'febuxostat', 'uricosurics', 'probenecid', and 'benzbromarone'...
August 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28638881/aristolochia-bracteolate-retz-attenuates-hyperuricemia-in-a-metabolic-arthritis-rat-model
#12
Yun-Peng Li, Shuang Wu, Afou Ran, Da-Yong Xu, Jing-Mei Wei, Zi-Long Zhao
BACKGROUND: The leaves of Aristolochia bracteolata Retz. has been documented in the folk medicine literature for its anti-arthritic activity. The target of the research envisaged was to elucidate the activity of A. bracteolata extract on hyperuricemic condition in arthritis rat model. MATERIALS AND METHODS: Dried and powdered plant leaves were extracted using ether and chloroform. Potassium oxonate was injected intra-articularly to produce arthritis. The hyperuricemic effect, of A...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28638581/images-in-clinical-medicine-tophi
#13
Amr Salama, Richard Alweis
Tophi (plural of tophus, Latin for "stone") are stone-like deposits of monosodium urate in the soft tissues, synovial tissues, or in bones near the joints. They are pathognomonic for gout, the most common inflammatory arthritis in the United States, with an estimated lifetime prevalence of 4%. It is usually the end result of loss of the balance between uric acid production and excretion. It can be found anywhere in the body especially in areas of friction or trauma. It is usually painless and rarely to present as the initial manifestation of gout...
March 2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/28631693/-independent-risk-factors-for-severe-cardiovascular-events-in-male-patients-with-gout-results-of-a-7-year-prospective-study
#14
M S Eliseev, I S Denisov, E I Markelova, S I Glukhova, E L Nasonov
AIM: To determine risk factors for severe cardiovascular (CV) events (CVEs) in male patients with crystal-verified gout. SUBJECTS AND METHODS: 251 male patients with crystal-verified gout were prospectively followed up in 2003 to 2013. The mean follow-up period was 6.9±2.0 years. New severe CVE cases and deaths were recorded. Logistic regression was used to analyze the impact of traditional and other risk factors and allopurinol use on the risk for severe CVEs...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28631197/prioritizing-future-research-on-allopurinol-and-febuxostat-for-the-management-of-gout-value-of-information-analysis
#15
Eric Jutkowitz, Fernando Alarid-Escudero, Hyon K Choi, Karen M Kuntz, Hawre Jalal
OBJECTIVES: The aim of this study was to quantify the value of conducting additional research and reducing uncertainty regarding the cost effectiveness of allopurinol and febuxostat for the management of gout. METHODS: We used a previously developed Markov model that evaluated the cost effectiveness of nine urate-lowering strategies: no treatment, allopurinol-only fixed dose (300 mg), allopurinol-only dose escalation (up to 800 mg), febuxostat-only fixed dose (80 mg), febuxostat-only dose escalation (up to 120 mg), allopurinol-febuxostat sequential therapy fixed dose, allopurinol-febuxostat sequential therapy dose escalation, febuxostat-allopurinol sequential therapy fixed dose, and febuxostat-allopurinol sequential therapy dose escalation...
June 19, 2017: PharmacoEconomics
https://www.readbyqxmd.com/read/28625358/disruption-of-xanthine-oxidoreductase-gene-attenuates-renal-ischemia-reperfusion-injury-in-mice
#16
Yoshie Haga, Toshio Ohtsubo, Noboru Murakami, Hideko Noguchi, Yasuo Kansui, Kenichi Goto, Kiyoshi Matsumura, Takanari Kitazono
AIMS: We examined the roles of xanthine oxidoreductase (XOR) in renal ischemia reperfusion (IR) injury. MAIN METHODS: XOR+/+ and XOR+/- mice were subjected to 24-h reperfusion after a 45-min bilateral renal artery occlusion or sham operation. We evaluated the renal damage based on the concentrations of blood urea nitrogen (BUN) and serum creatinine (Cr), and histological changes were detected by PAS staining. Xanthine dehydrogenase, oxidase (XO) and XOR activities, amounts of blood and urine 8-OHdG, and expressions of TNF-α and MCP-1 mRNA were examined...
August 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28617756/optimizing-thiopurine-therapy-in-inflammatory-bowel-disease-among-2-real-life-intercept-cohorts-effect-of-allopurinol-comedication
#17
Berrie Meijer, Margien L Seinen, Remco van Egmond, Gerd Bouma, Chris J J Mulder, Adriaan A van Bodegraven, Nanne K H de Boer
BACKGROUND: Thiopurines (azathioprine and mercaptopurine) are frequently used immunosuppressive drugs to maintain remission in patients with inflammatory bowel disease. Half of the conventional thiopurine-derivative users have to discontinue treatment within 5 years, mainly because of intolerable adverse events. Over recent years, different strategies to optimize thiopurine treatment were suggested, yet, studies describing the clinical effectiveness of these strategies remain scarce. The aims of this study were to compare tolerability and sustained clinical benefit of conventional thiopurine derivatives therapy among two 5-year real-life intercept cohorts and to assess the clinical value of specifically allopurinol cotherapy...
June 14, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28611628/overlapping-dress-and-stevens-johnson-syndrome-case-report-and-review-of-the-literature
#18
Aneline Casagranda, Mariano Suppa, Florence Dehavay, Véronique Del Marmol
Drug-induced severe cutaneous adverse reactions (SCARs) include acute generalized exanthematous pustulosis, drug reaction with eosinophilia and systemic symptoms (DRESS), and epidermal necrolysis (Stevens-Johnson syndrome [SJS], toxic epidermal necrolysis). The identification of the causal drug is crucial in order to avoid further exposure, but making the right differential diagnosis of the type of SCAR is equally important since treatment, follow-up, and prognosis of different SCARs are not the same. These syndromes are distinct entities with different clinical, biological, and histological patterns, but sometimes the early distinction between 2 SCARs can be extremely challenging, and overlapping conditions could therefore be taken into consideration, although true overlapping SCARs are very rare when using strict diagnostic criteria (described by the RegiSCAR group)...
May 2017: Case Reports in Dermatology
https://www.readbyqxmd.com/read/28608311/potential-role-of-allopurinol-in-preventing-contrast-induced-nephropathy-in-patients-undergoing-percutaneous-coronary-intervention-a-randomized-placebo-controlled-trial
#19
Zahra Ghelich Khan, Azita Hajhossein Talasaz, Hamidreza Pourhosseini, Kianoush Hosseini, Mohammad Javad Alemzadeh Ansari, Arash Jalali
BACKGROUND: Contrast-induced nephropathy (CIN) is a major drawback in percutaneous coronary intervention (PCI). Significant uricosuria has been reported following contrast exposure. Allopurinol-a xanthine oxidase inhibitor-has been suggested to prevent the formation of oxygen-free radicals, which may contribute to CIN. The aim of the present study was to evaluate the possible efficacy of allopurinol in preventing CIN. METHODS: In this double-blind placebo-controlled trial, patients with an estimated glomerular filtration rate ≥60 mL/min who were admitted for elective PCI, were randomized to receive either allopurinol 600 mg or a placebo administered 24 h before the procedure, and again immediately before the procedure...
June 12, 2017: Clinical Drug Investigation
https://www.readbyqxmd.com/read/28603225/cross-over-trial-of-febuxostat-and-topiroxostat-for-hyperuricemia-with-cardiovascular-disease-trofeo-trial
#20
Akira Sezai, Kazuaki Obata, Keisuke Abe, Sakie Kanno, Hisakuni Sekino
BACKGROUND: We previously reported that febuxostat was more effective for hyperuricemia than allopurinol. The efficacy, however, of topiroxostat (a novel xanthine oxidase reductase inhibitor similar to febuxostat), for hyperuricemia is unknown.Methods and Results:Patients with cardiovascular disease and hyperuricemia, in whom serum uric acid (s-UA) was controlled at ≤6 mg/dL, were eligible for enrollment. Fifty-five patients were randomized to receive either febuxostat or topiroxostat for 6 months and were switched to the other drug for the following 6 months...
June 9, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
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