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Smilga AS, Fournier S, Veillette H, Légaré MÈ, Gilbert M. A rare case of Mycoplasma-induced rash and mucositis in a 44-year-old female patient. JAAD Case Rep 2020; 6:1333-1335. [PMID: 32989421 PMCID: PMC7510416 DOI: 10.1016/j.jdcr.2020.09.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Björnsson HK, Gudmundsson DO, Björnsson ES. Liver injury caused by oral anticoagulants: A population-based retrospective cohort study. Liver Int 2020; 40:1895-1900. [PMID: 32511827 DOI: 10.1111/liv.14559] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 05/22/2020] [Accepted: 06/01/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND & AIMS Idiosyncratic drug-induced liver injury (DILI) is a rare adverse event. DILI caused by direct oral anticoagulants (DOACs) has been reported, however, data on the risk of DILI are limited. The aim of the study was to evaluate the frequency of DILI caused by oral anticoagulants (OACs) in a population-based setting. METHODS A computerized database search in The National Prescription Database was performed identifying all patients in Iceland who were prescribed OACs (rivaroxaban, apixaban, dabigatran, edoxaban or warfarin) in 2008-2017. Personal identification numbers of these patients were linked with a database containing laboratory results for all hospitals and most outpatient clinics in Iceland. A medical chart review was performed in all cases where onset of liver injury followed intake of OACs. Patients with other specific causes of liver injury were excluded. Causality assessment with the RUCAM method was undertaken in cases with suspected DILI. RESULTS Three cases of suspected DILI were identified. In all cases, rivaroxaban was the implicated agent among patients prescribed this product (n = 3446). All were women with a hepatocellular type of liver injury. One patient developed a suspected drug-induced autoimmune hepatitis and was treated with corticosteroids. No cases of DILI in patients on warfarin (n = 9101), apixaban (n = 1903), dabigatran (n = 1335) and edoxaban (n = 34) were identified. CONCLUSIONS Rivaroxaban was the only OAC associated with DILI during the 10-year study period. Approximately 1 in 1100 patients treated with rivaroxaban developed DILI. Other OACs were not associated with liver injury in this population-based study.
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Gilmore ES, Alexander-Savino CV, Chung CG, Poligone B. Evaluation and management of patients with early-stage mycosis fungoides who interrupt or discontinue topical mechlorethamine gel because of dermatitis. JAAD Case Rep 2020; 6:878-881. [PMID: 32904169 PMCID: PMC7452260 DOI: 10.1016/j.jdcr.2020.05.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Higginson IJ, Wilcock A, Johnson MJ, Bajwah S, Lovell N, Yi D, Hart SP, Crosby V, Poad H, Currow D, Best E, Brown S. Randomised, double-blind, multicentre, mixed-methods, dose-escalation feasibility trial of mirtazapine for better treatment of severe breathlessness in advanced lung disease (BETTER-B feasibility). Thorax 2020; 75:176-179. [PMID: 31915308 PMCID: PMC7029228 DOI: 10.1136/thoraxjnl-2019-213879] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 11/01/2019] [Accepted: 11/18/2019] [Indexed: 11/11/2022]
Abstract
New treatments are required for severe breathlessness in advanced disease. We conducted a randomised feasibility trial of mirtazapine over 28 days in adults with a modified medical research council breathlessness scale score ≥3. Sixty-four patients were randomised (409 screened), achieving our primary feasibility endpoint of recruitment. Most patients had COPD or interstitial lung disease; 52 (81%) completed the trial. There were no differences between placebo and mirtazapine in tolerability or safety, and blinding was maintained. Worst breathlessness ratings at day 28 (primary clinical activity endpoint) were, 7.1 (SD 2.3, placebo) and 6.3 (SD 1.8, mirtazapine). A phase III trial of mirtazapine is indicated. Trial registration: ISRCTN 32236160; European Clinical Trials Database (EudraCT no: 2015-004064-11).
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Guzman AK, Zhang M, Kwatra SG, Kaffenberger BH. Predictors of 30-day readmission in Stevens-Johnson syndrome and toxic epidermal necrolysis: A cross-sectional database study. J Am Acad Dermatol 2019; 82:303-310. [PMID: 31542405 DOI: 10.1016/j.jaad.2019.09.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 09/12/2019] [Accepted: 09/14/2019] [Indexed: 12/31/2022]
Abstract
BACKGROUND The predictors of readmission in Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN) have not been characterized. OBJECTIVE To determine the variables predictive of 30-day readmission after SJS/TEN hospitalization. METHODS We performed a cross-sectional study of the 2010-2014 Nationwide Readmissions Database. Bivariate and multivariable logistic regression was used to evaluate associations of patient demographics, comorbidities, and hospital characteristics with readmission. Aggregate and per-readmission costs were calculated. RESULTS There were 8837 index admissions with SJS/TEN reported; of these, 910 (10.3%) were readmitted, with diagnoses including systemic infection (22.0%), SJS/TEN (20.6%), and cutaneous infection (9.1%). Associated characteristics included age 45 to 64 years (odds ratio [OR], 1.88; 95% confidence interval [CI], 1.43-2.49), Medicaid insurance (OR, 1.83; 95% CI, 1.48-2.27), and nonmetropolitan hospital admission (OR, 1.67; 95% CI, 1.31-2.13). Associated comorbidities included HIV/AIDS (OR, 2.48; 95% CI, 1.63-3.75), collagen vascular disease (OR, 2.38; 95% CI, 1.88-3.00), and metastatic cancer (OR, 2.16; 95% CI, 1.35-3.46). The median per-readmission cost was $10,019 (interquartile range, $4,788-$16,485). LIMITATIONS The Nationwide Readmissions Database lacks the ability to track the same patient across calendar years. The diagnostic code lacks specificity for hospitalizations <3 days. CONCLUSIONS Thirty-day readmissions after SJS/TEN hospitalizations are common. Dedicated efforts to identify at-risk patients may improve peridischarge continuity.
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Atanaskovic-Markovic M, Gomes E, Cernadas JR, du Toit G, Kidon M, Kuyucu S, Mori F, Ponvert C, Terreehorst I, Caubet JC. Diagnosis and management of drug-induced anaphylaxis in children: An EAACI position paper. Pediatr Allergy Immunol 2019; 30:269-276. [PMID: 30734362 DOI: 10.1111/pai.13034] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 12/19/2018] [Accepted: 12/21/2018] [Indexed: 12/27/2022]
Abstract
Drug hypersensitivity reactions (DHR) constitute a major and common public health problem, particularly in children. One of the most severe manifestations of DHR is anaphylaxis, which might be associated with a life-threatening risk. During those past decades, anaphylaxis has received particularly a lot of attention and international consensus guidelines have been recently published. Whilst drug-induced anaphylaxis is more commonly reported in adulthood, less is known about the role of drugs in pediatric anaphylaxis. Betalactam antibiotics and non-steroidal anti-inflammatory drugs are the most commonly involved drugs, probably related to high prescription rates. Diagnosis relies on the recognition of symptoms pattern and is based on complete allergic workup, particularly including skin tests and/or specific IgE. However, the real diagnostic value of those tests to diagnose immediate reactions in children remains not well defined for a significant number of the drugs. Generally, a drug provocation test is discussed to confirm or exclude an immediate-onset drug-induced hypersensitivity. Although avoidance of the incriminated drug (and related drug) is the rule, rapid desensitization is useful in selected subgroups of patients. There is a need for large, multicentric studies, to evaluate the real diagnostic value of the currently available skin tests. Moreover there is also a need to develop new diagnostic tests in the future to improve the management of these children.
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Atanaskovic-Markovic M, Gomes E, Cernadas JR, du Toit G, Kidon M, Kuyucu S, Mori F, Ponvert C, Terreehorst I, Caubet JC. Diagnosis and management of drug-induced anaphylaxis in children: An EAACI position paper. PEDIATRIC ALLERGY AND IMMUNOLOGY : OFFICIAL PUBLICATION OF THE EUROPEAN SOCIETY OF PEDIATRIC ALLERGY AND IMMUNOLOGY 2019. [PMID: 30734362 DOI: 10.1111/pai.13034)] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Drug hypersensitivity reactions (DHR) constitute a major and common public health problem, particularly in children. One of the most severe manifestations of DHR is anaphylaxis, which might be associated with a life-threatening risk. During those past decades, anaphylaxis has received particularly a lot of attention and international consensus guidelines have been recently published. Whilst drug-induced anaphylaxis is more commonly reported in adulthood, less is known about the role of drugs in pediatric anaphylaxis. Betalactam antibiotics and non-steroidal anti-inflammatory drugs are the most commonly involved drugs, probably related to high prescription rates. Diagnosis relies on the recognition of symptoms pattern and is based on complete allergic workup, particularly including skin tests and/or specific IgE. However, the real diagnostic value of those tests to diagnose immediate reactions in children remains not well defined for a significant number of the drugs. Generally, a drug provocation test is discussed to confirm or exclude an immediate-onset drug-induced hypersensitivity. Although avoidance of the incriminated drug (and related drug) is the rule, rapid desensitization is useful in selected subgroups of patients. There is a need for large, multicentric studies, to evaluate the real diagnostic value of the currently available skin tests. Moreover there is also a need to develop new diagnostic tests in the future to improve the management of these children.
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Lee MS, Stavert R. Ichthyosiform eruption caused by paradichlorobenzene toxicity from chronic mothball ingestion. JAAD Case Rep 2019; 5:329-331. [PMID: 30989101 PMCID: PMC6447672 DOI: 10.1016/j.jdcr.2019.01.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Thomaidou E, Ramot Y. Injection site reactions with the use of biological agents. Dermatol Ther 2019; 32:e12817. [PMID: 30637967 DOI: 10.1111/dth.12817] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 10/31/2018] [Accepted: 01/11/2019] [Indexed: 11/29/2022]
Abstract
Injection site reactions (ISRs) are a local phenomenon defined as a constellation of symptoms, including swelling, erythema, pruritus, and pain around the site of injection. This article reviews the different aspects of ISRs, including their epidemiology and pathogenesis, and provides practical guidance to diagnose and treat such reactions. More focus is given to food and drug administration (FDA)-approved biological agents and biosimilars, which are licensed mainly for the treatment of dermatological conditions, including psoriasis, atopic dermatitis, and chronic urticaria. ISRs are major complications of all FDA-approved self-injectable biological agents, both in adults and children, with studies showing an incidence rate of 0.5-40%. The article emphasizes that ISRs are not correlated with drug efficacy or development of antidrug antibodies. Therefore, misunderstanding of the pathophysiology of the ISRs, most of them not being allergic or immunogenic reactions, might result in unnecessary discontinuation of the treatment. Almost all local reactions to subcutaneously administered biological agents can be prevented by changing the injection techniques, patient education, and training.
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Korman AM, Nisar MS, Somach SC. Subclinical granulomas in benign skin lesions heralding the onset of BRAF and MEK inhibitor-associated granulomatous dermatitis in a patient with metastatic melanoma. JAAD Case Rep 2018; 4:722-724. [PMID: 30167445 PMCID: PMC6113653 DOI: 10.1016/j.jdcr.2018.05.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Oral diabetes medications other than dipeptidyl peptidase 4 inhibitors are not associated with bullous pemphigoid: A Finnish nationwide case-control study. J Am Acad Dermatol 2018; 79:1034-1038.e5. [PMID: 29803903 DOI: 10.1016/j.jaad.2018.05.030] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 05/18/2018] [Accepted: 05/22/2018] [Indexed: 12/27/2022]
Abstract
BACKGROUND Dipeptidyl peptidase 4 inhibitors (DPP4is) used to treat diabetes have been reported to be associated with an increased risk of bullous pemphigoid (BP). There are no previous reports analyzing the risk of BP in patients who are using other diabetes medications. OBJECTIVE To evaluate the association between diabetes medications other than DPP4i and development of BP. METHODS We investigated the prevalence of diabetes among patients with BP and the association between the use of diabetes drugs (excluding DPP4i, metformin, and insulin) and BP by analyzing national Finnish registry data for 3397 patients with BP and 12,941 patients with basal cell carcinoma as controls. RESULTS Our results show that 19.6% of patients with BP have type 2 diabetes. Use of none of the investigated medications was associated with an increased risk of BP. LIMITATIONS Because this was a registry-based study, it was not possible to verify the accuracy of the diagnoses. The risk of BP in users of glucagon-like peptide 1 receptor agonists could not be analyzed. CONCLUSION Our study shows that the investigated diabetes drugs are not associated with an increased risk of BP in a Finnish patient database, indicating they can be safely used in this population. Generalization of these results to other populations will require further study.
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Chow ML, Kim D, Kamath S, Peng D, Luu M. Use of antiviral medications in drug reaction with eosinophilia and systemic symptoms (DRESS): A case of infantile DRESS. Pediatr Dermatol 2018; 35:e114-e116. [PMID: 29334124 DOI: 10.1111/pde.13408] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A 3-month-old girl with Sturge-Weber syndrome presented with a morbilliform rash, eosinophilia, and fulminant liver failure to our tertiary pediatric hospital. She was diagnosed with drug reaction with eosinophilia and systemic symptoms complicated by viremia and evidence of viral hepatitis on liver biopsy. We discuss the role of viral reactivation in drug reaction with eosinophilia and systemic symptoms and the relevance of antiviral therapy in management.
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Biswal SG, Mehta RD. Cutaneous Adverse Reactions of Chemotherapy in Cancer Patients: A Clinicoepidemiological Study. Indian J Dermatol 2018. [PMID: 29527024 PMCID: PMC5838753 DOI: 10.4103/ijd.ijd_65_17] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Background: The diagnosis of cutaneous adversities in the cancer patient is especially difficult, given the complexity of their illness and combination protocols used for the treatment. The present study was undertaken to know the spectrum of cutaneous adversities in patients undergoing chemotherapy and the drug(s) most commonly associated with it. Materials and Methods: A total of 1000 patients with malignancies under chemotherapy in the oncology ward and outpatient department were screened in this observational study from January 2013 to February 2015. Relevant investigations for diagnosis of malignancies under chemotherapy and dermatological disorders were carried out. Results: Three hundred and eighty-four patients presented with cutaneous adversities of chemotherapy. The most common was anagen effluvium (78.6%), followed by xerosis (4.4%), thrombophlebitis (3.1%), generalised pruritus (2.9%), melanonychia (2.9%), hand-foot syndrome (2.6%), extravasation reactions (1.8%), flagellate dermatosis (1.3%), prurigo nodularis (0.8%), exfoliation (0.5%), ichthyosis (0.5%), papulopustular rash (0.3%), bullous photodermatitis (0.3%), and Sweet's syndrome (0.3%). Chemotherapeutic drugs were mostly given in combinations. Most common drugs to cause anagen effluvium were alkylating agents in combinations, hand-foot syndrome by taxanes (docetaxel), flagellate dermatoses by antitumour antibiotics (bleomycin), and exfoliation by antimetabolites (methotrexate). The limitation of this study was to imply a specific drug as the causation of the cutaneous adversities since the chemotherapy mostly consisted of combination protocols. Therefore, we have tried to associate the drug combination itself. Conclusion: Chemotherapeutic drugs produce a range of cutaneous adversities, certain specific adversities pertaining to drugs, and their combinations have been implicated which should be looked for and managed accordingly. Knowledge of the adverse effects of anticancer drugs will help reduce the psychological trauma and improve the quality of life.
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Abstract
This article reviews those pathologic lesions which are associated with clinical and/or biochemical hyperthyroidism. Beginning with the descriptive pathology of classical Graves' disease and the less common toxic nodular goiter and hyper-functioning thyroid nodules, this paper describes the effects of non-thyroidal hormones, glandular function (including pituitary and hypothalamic lesions), ectopic production of thyroid stimulating proteins by non-thyroidal neoplasms, exogenous drug reactions causing hyper-function and finally conditions associated with a mechanic- destructive cause of hyperthyroidism.
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Abstract
BACKGROUND An increasing number of drugs have been linked to drug-induced subacute cutaneous lupus erythematosus (DI-SCLE). The recognition and management of DI-SCLE can be challenging, as the condition may be triggered by different classes of drugs after variable lengths of time. OBJECTIVES To determine the proportion of patients with cutaneous lupus erythematosus (CLE) whose drugs are an inducing or aggravating factor. MATERIALS & METHODS We conducted a retrospective chart review of patients diagnosed with CLE at a dermatological department over a 21-year period. We registered clinical, serological, and histological data with a focus on drug intake. RESULTS Of 775 consecutive patients with a diagnosis of lupus erythematosus (LE) or suspected LE, a diagnosis of CLE could be confirmed in 448 patients. A total of 130 patients had a drug intake that could suggest DI-SCLE. In 88 cases, a drug was evaluated to be definitely, probably, or possibly triggering CLE using the Naranjo probability scale. The most common drugs involved were proton pump inhibitors (PPIs), thiazide diuretics, antifungals, chemotherapeutics, statins, and antiepileptics. The incubation period varied widely with a median of eight weeks. The characteristics of DI-SCLE patients were more widespread rash relative to the other patients, with inflamed skin lesions or atypical variants which could resemble erythema multiforme. CONCLUSIONS We present 88 patients with DI-SCLE, which is the largest case series reported, to date. DI-SCLE represented 20% of patients with CLE seen at our department. We conclude that DI-SCLE should be considered in every case of SCLE.
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Mittal L, Zhang L, Feng R, Werth VP. Antimalarial drug toxicities in patients with cutaneous lupus and dermatomyositis: A retrospective cohort study. J Am Acad Dermatol 2017; 78:100-106.e1. [PMID: 28989103 DOI: 10.1016/j.jaad.2017.09.061] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 09/12/2017] [Accepted: 09/25/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Although existing evidence demonstrates the efficacy of antimalarials for rheumatic skin disease, the safety of these medications, and particularly quinacrine, remains debated. OBJECTIVE We investigated the toxicity risk associated with antimalarials in patients with cutaneous lupus erythematosus and dermatomyositis. METHODS A total of 532 patients (mean age, 52.29 years; sample composition by sex, 85.15% female vs 14.85% male) were selected from 2 databases on cutaneous lupus erythematosus (69.92%) and dermatomyositis (30.08%). Details regarding treatment and toxicities were extracted and 5 treatment courses were defined (ie, hydroxychloroquine [HCQ], chloroquine [CQ], quinacrine [Q], HCQ-Q combination therapy [HCQ-Q], and CQ-Q combination therapy [CQ-Q]). The hazard ratio for each major toxicity was estimated by using the Cox proportional hazard model to compare the different treatments with HCQ. RESULTS The most common toxicities included cutaneous eruption, gastrointestinal upset, mucocutaneous dyspigmentation, neurologic toxicity, and retinopathy. The hazards of cutaneous eruption, gastrointestinal upset, and neurologic toxicities were lower with HCQ-Q than with HCQ; however, this may represent selection bias. Although there was increased retinopathy risk with CQ and CQ-Q versus with HCQ, retinopathy was not seen with Q. LIMITATIONS Retrospective analysis. CONCLUSIONS With the exception of retinopathy, which was not seen with Q, the risks for other toxicities associated with Q monotherapy or combination treatment were not significantly different from those with HCQ.
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Shaikh N, Johnson M, Hall DA, Chung KF, Riley JH, Worsley S, Bhavsar PK. Intracellular interactions of umeclidinium and vilanterol in human airway smooth muscle. Int J Chron Obstruct Pulmon Dis 2017; 12:1903-1913. [PMID: 28721035 PMCID: PMC5501633 DOI: 10.2147/copd.s134420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Intracellular mechanisms of action of umeclidinium (UMEC), a long-acting muscarinic receptor antagonist, and vilanterol (VI), a long-acting β2-adrenoceptor (β2R) agonist, were investigated in target cells: human airway smooth-muscle cells (ASMCs). Materials and methods ASMCs from tracheas of healthy lung-transplant donors were treated with VI, UMEC, UMEC and VI combined, or control compounds (salmeterol, propranolol, ICI 118.551, or methacholine [MCh]). Cyclic adenosine monophosphate (cAMP) was measured using an enzyme-linked immunosorbent assay, intracellular free calcium ([Ca2+]i) using a fluorescence assay, and regulator of G-protein signaling 2 (RGS2) messenger RNA using real-time quantitative polymerase chain reaction. Results VI and salmeterol (10−12–10−6 M) induced cAMP production from ASMCs in a concentration-dependent manner, which was greater for VI at all concentrations. β2R antagonism by propranolol or ICI 118.551 (10−12–10−4 M) resulted in concentration-dependent inhibition of VI-induced cAMP production, and ICI 118.551 was more potent. MCh (5×10−6 M, 30 minutes) attenuated VI-induced cAMP production (P<0.05), whereas pretreatment with UMEC (10−8 M, 1 hour) restored the magnitude of VI-induced cAMP production. ASMC stimulation with MCh (10−11–5×10−6 M) resulted in a concentration-dependent increase in [Ca2+]i, which was attenuated with UMEC pretreatment. Reduction of MCh-induced [Ca2+]i release was greater with UMEC + VI versus UMEC. UMEC enhanced VI-induced RGS2 messenger RNA expression. Conclusion These data indicate that UMEC reverses cholinergic inhibition of VI-induced cAMP production, and is a more potent muscarinic receptor antagonist when in combination with VI versus either alone.
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Vu TT, Gooderham M. Adverse Drug Reactions and Cutaneous Manifestations Associated With Anticoagulation. J Cutan Med Surg 2017. [PMID: 28639463 DOI: 10.1177/1203475417716364] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Anticoagulants are amongst the most commonly prescribed medications worldwide. Although rare, localised and systemic drug reactions have been reported with anticoagulants that can lead to significant morbidity and mortality. Some of the first signs of drug reactions to anticoagulants are cutaneous changes that, when recognised early, can prevent significant complications. Dermatologists should be aware of these changes to make an early and accurate diagnosis. This is particularly important in instances of skin-induced necrosis caused by systemic toxicity to anticoagulants. This review discusses adverse drug reactions to the traditional anticoagulants, warfarin and heparin, and the newer direct oral anticoagulants (DOACs) such as the thrombin inhibitor, dabigatran, and the factor Xa inhibitors, rivaroxaban, apixaban, and edoxaban. In particular, this review provides dermatologists with a framework for early diagnosis and management of patients with drug reactions to anticoagulants and alerts them to potential bleeding complications associated with minor procedures.
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Laska AJ, Han MJ, Lospinoso JA, Brown PJ, Beachkofsky TM. CYP2C19*2 status in patients with Stevens-Johnson syndrome and toxic epidermal necrolysis. PHARMACOGENOMICS & PERSONALIZED MEDICINE 2017; 10:183-186. [PMID: 28553132 PMCID: PMC5440075 DOI: 10.2147/pgpm.s129908] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
PURPOSE Genetic polymorphisms have been linked to an increased predisposition to developing certain diseases. For example, patients of Han-Chinese descent carrying the HLA-B*1502 allele are at an increased risk of developing Stevens-Johnson syndrome and toxic epidermal necrolysis (SJS/TEN) if given carbamazepine. Given the complexity of in vivo drug metabolism, it is plausible that the activity of enzyme systems unrelated to specific drug metabolism may be important. Although multiple biomarkers have been identified in unique ethnic groups, there has yet to be a study investigating the presence of the slow metabolizing allele of CYP2C19, denoted CYP2C19*2, in diverse groups and the risk of developing SJS/TEN. PATIENTS AND METHODS This study looked into the carrier status of CYP2C19*2, a poor metabolizing variant of CYP2C19, in patients diagnosed with SJS/TEN. We looked at its status in our series as a whole and when patients were divided by ethnicity. Genomic DNA was extracted from formalin-fixed paraffin-embedded tissue of patients with biopsy-proven SJS/TEN and real-time polymerase chain reaction was used to assess for the presence of CYP2C19*2. RESULTS CYP2C19*2 status was determined in 47 patients. Twenty-nine of these 47 patients had a single medication implicated as causing their disease, and eight of these patients were heterozygous or homozygous for CYP2C19*2. There was insufficient evidence to conclude that the presence of CYP2C19*2 is an independent predictor of risk for developing SJS/TEN in our series as a whole. This analysis also confirmed that the frequency of the CYP2C19*2 polymorphism within the different ethnicities in our series did not vary statistically from reported ethnic rates. CONCLUSION Our study was unable to show a relationship between CYP2C19*2 status and predisposition toward SJS/TEN. We had a heterogeneous population, making it difficult to control for possible confounding factors.
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Gohy S, Froidure A, Lebecque P. DRESS syndrome in a patient with cystic fibrosis: A case report. Pediatr Pulmonol 2017; 52:E18-E21. [PMID: 27740720 DOI: 10.1002/ppul.23567] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 08/15/2016] [Accepted: 08/19/2016] [Indexed: 11/06/2022]
Abstract
Drug reaction with eosinophilia and systemic symptom (DRESS) syndrome is a rare and severe side-effect, mainly described after intake of anticonvulsants, allopurinol, or antibiotics. It usually begins within 2 months after drug introduction. Symptoms include cutaneous rash, hematologic abnormalities, and internal organ involvement and the diagnosis might be challenging. This case report illustrates for the first time this life-threatening complication in a patient with cystic fibrosis (CF). In this case, withdrawal of the offending drug was sufficient for full recovery. Clinicians involved in CF care should be aware of DRESS syndrome, as they commonly prescribe several potentially culprit drugs. Pediatr Pulmonol. 2017;52:E18-E21. © 2016 Wiley Periodicals, Inc.
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Succaria F, Bhawan J. Cutaneous side-effects of biologics in immune-mediated disorders: A histopathological perspective. J Dermatol 2017; 44:243-250. [PMID: 28256759 DOI: 10.1111/1346-8138.13762] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 12/07/2016] [Indexed: 12/19/2022]
Abstract
Advances in understanding molecular mechanisms and targets in immune regulation have led to the widespread use of biologic targeted therapies, and, as such, reformed the course of many disabling diseases. However, with their expanded use, various side-effects, including cutaneous, have emerged. Many times a clear-cut relationship exists between the drug and the clinical manifestations; however, when a biopsy is warranted, various histopathological patterns may be observed and may cause confusion to the dermatopathologist. The aim of this review is to shed light on the different histopathological patterns observed as a manifestation secondary to biologics.
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Minhas JS, Wickner PG, Long AA, Banerji A, Blumenthal KG. Immune-mediated reactions to vancomycin: A systematic case review and analysis. Ann Allergy Asthma Immunol 2016; 116:544-53. [PMID: 27156746 PMCID: PMC4946960 DOI: 10.1016/j.anai.2016.03.030] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 03/17/2016] [Accepted: 03/25/2016] [Indexed: 11/17/2022]
Abstract
BACKGROUND Vancomycin is a broad-spectrum antibiotic whose use may be limited by adverse drug reactions (ADRs). Although vancomycin toxic effects are known, there are limited data on vancomycin hypersensitivity reactions (HSRs). OBJECTIVE To understand the most commonly reported vancomycin HSRs through systematic case review. METHODS We performed a literature search for English-language case reports and series from 1982 through 2015 (last search July 31, 2015) on Ovid MEDLINE and PubMed. The search included the subject heading vancomycin with the subheading adverse effects and separate text searches for vancomycin with a list of specified HSRs. References of identified articles were reviewed to find additional articles. Clinical data were collected and summarized. RESULTS Of 201 identified articles, 84 were screened and 57 fully assessed; these 57 articles contained 71 vancomycin HSR cases that were included in analysis. Vancomycin HSRs were immediate (anaphylaxis, n = 7) and nonimmediate (n = 64). Nonimmediate HSRs included linear IgA bullous dermatosis (LABD, n = 34), drug rash eosinophilia and systemic symptoms (DRESS) syndrome (n = 16), acute interstitial nephritis (AIN, n = 8), and Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN, n = 6). Median times of vancomycin therapy before HSR onset was 7 days (interquartile range [IQR], 4-10 days) for LABD, 9 days (IQR, 9-22 days) for SJS/TEN, 21 days (IQR, 17-28 days) for DRESS syndrome, and 26 days (IQR, 7-29 days) for AIN. Overall, 11 patients (16%) died, and 4 (6%) had deaths attributed to the HSR. CONCLUSION Vancomycin causes a variety of HSRs; the most commonly identified were nonimmediate HSRs, with LABD being most frequent. We observed a high frequency of HSR mortality. Further data are needed to understand the frequency and severity of vancomycin HSRs.
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