A 52-year-old woman with rheumatoid arthritis who had been treated with prednisone and hydroxychloroquine for >12 years presented with chest discomfort and a seizure. She was diagnosed with restrictive cardiomyopathy combined with sick sinus syndrome. A myocardial muscle biopsy was performed to identify the underlying cardiomyopathy, which showed marked muscle fiber hypertrophy, fiber dropout, ...

A controlled, double blind, parallel group, long term study of hydroxychloroquine sulphate in the treatment of rheumatoid arthritis, comparing daily doses of 200 mg and 400 mg, is described. The trial involved 54 patients with moderate disease activity who had not previously received antimalarial drugs. Forty three patients completed the one year treatment. The groups receiving different doses ...

Retinal toxicity as a result of antimalarial therapy has been reported for many years. Retinopathy may be divided into reversible premaculopathy and irreversible true retinopathy. Risk factors for the development of toxicity are daily dosage related to body weight, total drug dosage and the specific drug used. The daily dosage of chloroquine should not exceed 4 mg/kg lean body weight a day. Exc...

4AQR 4-Aminoquinoline retinopathy 4AQs 4-Aminoquinolines (chloroquine and hydroxychloroquine) ABW Actual body weight APC Antigen presenting cell BCVA Best corrected visual acuity C Chloroquine C p G ODN C p G oligodeoxynucleotide CV Color vision CYP Cytochrome P450 enzymes DFE Dilated fundus examination DNA Deoxyribonucleic acid ERK Extracellular signal-regulated kinases FP Ferriprotoporphyrin ...

A 50-years-old woman with systemic lupus erythematosus treated for 13 years with hydroxychloroquine developed nephropathy and high blood pressure five years ago as well as moderate loss of vision in her right eye. Fundoscopy showed alterations of macular pigmentation only in the right eye. Visual fields 10-2 were normal in both eyes. Optical coherence tomography showed hyperreflective foveal th...

OBJECTIVE To determine the predictive value of shared epitope alleles for response to treatment in patients with rheumatoid arthritis. METHODS Patients from our previously published triple DMARD study were tested for the presence of shared epitope alleles (DRB1 *0401, 0404/0408, 0405, 0101, 1001, and 1402). Patients who were shared epitope positive were then compared with those who were negat...

T. Wu performed the experiments, analyzed the data, and contributed to the writing and editing of the manuscript; S. Yang and S. Haven performed the experiments and analyzed the data; V. M. Holers and A. S. Lundberg analyzed the data and contributed to the writing and editing of the manuscript; H. Wu performed the experiments, analyzed the data, and contributed to the writing and editing of the...

We use a data driven approach on cleaned adverse drug reaction database to determine the severity of several covid-19 combinations currently under investigation. further examine their safety for vulnerable populations such as individuals 65 years and older. Our key findings include 1. hydroxychloroquine/chloroquine are associated with increased event versus other already not recommended by NIH ...