We found that in the years 1978 through 1981 only one of 54 previously untreated patients with Hansen's disease was found to harbor dapsone-resistant Mycobacterium leprae. That single strain was only partially resistant, ie, it was resistant to 0.0001% dapsone in a mouse diet but not to higher concentrations. During the years 1983 through 1988, M leprae from 47 previously untreated patients presenting to clinics in San Francisco, Calif, and Los Angeles, Calif, grew in mice. None of these strains was found to be dapsone resistant. Thus, from 1978 through 1988 only one of 101 M leprae isolates obtained from skin biopsy specimens from patients with leprosy was found to be resistant to dapsone. We have concluded that primary dapsone resistance still does not appear to be a significant problem in California. Owing to the fact that our single resistant case and those reported from international sources are, in general, partially resistant, the potential importance of partial dapsone resistance is discussed.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
A rapid and simple MALDI-TOF MS lipid profiling method for differentiating from .
J Clin Microbiol
January 2025
Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Higashimurayama, Tokyo, Japan.
, a slow-growing nontuberculous mycobacterium, causes Buruli ulcer, a neglected tropical disease. Distinguishing from related species, including , poses challenges with respect to making accurate identifications. In this study, we developed a rapid and simple identification method based on mycobacterial lipid profiles and used matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) to analyze the lipid profiles of ( = 35) and ( = 19) isolates.
View Article and Find Full Text PDFA Case of Lepromatous Leprosy Presenting With Multiple Morphologies in Philadelphia.
Cureus
December 2024
Dermatology, Temple University Hospital, Philadelphia, USA.
Leprosy is an uncommon chronic mycobacterial infection in the United States caused by . There are two major forms of the infection, lepromatous leprosy and tuberculoid leprosy, with borderline forms of each. Leprosy is even more uncommon in the Northeastern United States and can present with various symptoms and skin findings, including erythematous or hypopigmented patches or plaques with accompanying hypoesthesia or anesthesia, anhidrosis, or alopecia.
View Article and Find Full Text PDFComparative study between efficacy of topical tofacitinib 2% ointment versus topical clobetasol propionate 0.05% ointment in hand eczema at a tertiary hospital in central India.
F1000Res
January 2025
Dermatology, Venereology and Leprosy, Datta Meghe Institute of Higher Education and Research, Wardha, 442001, India.
Background: Hand eczema is a prevalent dermatological condition that significantly impacts the quality of life of affected individuals. Topical corticosteroids, such as Clobetasol Propionate, are commonly employed for management, but concerns regarding long-term use and potential side effects necessitate exploration of alternative treatments. This study protocol outlines a randomized controlled trial comparing the efficacy of topical Tofacitinib 2% ointment with Clobetasol Propionate 0.
View Article and Find Full Text PDFUnveiling significant regrowth and potential risk of nontuberculous mycobacteria in hospital water supply system.
Water Res
January 2025
Department of Urban Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan; Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1, Komaba, Meguro, Tokyo 153-8904, Japan. Electronic address:
The health burden of waterborne nontuberculous mycobacteria (NTM) is a rising concern. While the water supply systems can serve as a potential reservoir for NTM, their abundance, diversity, and transmission pathways remain unknown. This study aimed to characterize the prevalence and regrowth of NTM in building water supply system in a hospital where many M.
View Article and Find Full Text PDFEmergence of Carbapenem-Resistant Harboring Isolated from River Water in Ghana.
Antibiotics (Basel)
January 2025
Department of Molecular Microbiology and Immunology, Institute of Science Tokyo, Tokyo 113-8510, Japan.
, known for carrying the gene and linked to various diseases, is widely distributed. However, its prevalence in Ghana is unknown, mainly due to misidentification or inadequate research. In this study, for the first time, we characterized from Densu river water in Ghana.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!