Browse
Submit Data
Databases
API
Help

Dataset Information

25 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Azole resistance of Malassezia pachydermatis causing treatment failure in a dog.

ABSTRACT: A 5-year-old neutered female toy Poodle chronically treated with systemic and topical azoles to control recurrent Malassezia dermatitis/otitis was presented because of the loss of treatment efficacy. Minimum Inhibitory Concentrations (MICs) obtained in vitro for various azoles (especially itraconazole and ketoconazole) against Malassezia strains isolated from the dog were increased by several-fold compared with MICs obtained for control isolates. These results reinforced the assumption based on clinical observation, i.e. the development of azole resistance.

SUBMITTER: Angileri M

PROVIDER: S-EPMC6325069 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

Azole resistance of <i>Malassezia pachydermatis</i> causing treatment failure in a dog.

Angileri Martina M Pasquetti Mario M De Lucia Michela M Peano Andrea A

Medical mycology case reports 20181221

A 5-year-old neutered female toy Poodle chronically treated with systemic and topical azoles to control recurrent Malassezia dermatitis/otitis was presented because of the loss of treatment efficacy. Minimum Inhibitory Concentrations (MICs) obtained in vitro for various azoles (especially itraconazole and ketoconazole) against Malassezia strains isolated from the dog were increased by several-fold compared with MICs obtained for control isolates. These results reinforced the assumption based on ...[more]

PMID: 30662826

Similar Datasets

New Therapeutic Candidates for the Treatment of Malassezia pachydermatis -Associated Infections.

Project description:The opportunistic pathogen Malassezia pachydermatis causes bloodstream infections in preterm infants or individuals with immunodeficiency disorders and has been associated with a broad spectrum of diseases in animals such as seborrheic dermatitis, external otitis and fungemia. The current approaches to treat these infections are failing as a consequence of their adverse effects, changes in susceptibility and antifungal resistance. Thus, the identification of novel therapeutic targets against M. pachydermatis infections are highly relevant. Here, Gene Essentiality Analysis and Flux Variability Analysis was applied to a previously reported M. pachydermatis metabolic network to identify enzymes that, when absent, negatively affect biomass production. Three novel therapeutic targets (i.e., homoserine dehydrogenase (MpHSD), homocitrate synthase (MpHCS) and saccharopine dehydrogenase (MpSDH)) were identified that are absent in humans. Notably, L-lysine was shown to be an inhibitor of the enzymatic activity of MpHCS and MpSDH at concentrations of 1 mM and 75 mM, respectively, while L-threonine (1 mM) inhibited MpHSD. Interestingly, L- lysine was also shown to inhibit M. pachydermatis growth during in vitro assays with reference strains and canine isolates, while it had a negligible cytotoxic activity on HEKa cells. Together, our findings form the bases for the development of novel treatments against M. pachydermatis infections.

| S-EPMC7078309 | biostudies-literature

Malassezia pachydermatis

Project description:Genome analysis of azole-resistant Malassezia pachydermatis

| PRJNA951484 | ENA

Malassezia pachydermatis

Project description:Malassezia pachydermatis Genome sequencing and assembly

| PRJNA639054 | ENA

Malassezia pachydermatis

Project description:Basidiomycetous yeast that is a commensal yeast of the skin from dogs and cats

| PRJNA345190 | ENA

The genomic tandem quadruplication is associated with ketoconazole resistance of Malassezia pachydermatis

Project description:Purpose: Understanding the ketoconazole resistance mechanism in Malassezia pachydermatis Methods: The transcriptome profile of the ketoconazole resistant M. pachydermatis KCTC 27587 cells compared to that of ketoconazole sensitive M. pachydermatis CBS 1879 cells were generated by RNA-Seq using Illumina HiSeq. Results: The expressions of genes in the region of quadruplicated chromosome 4 were up-regulated.

2019-02-07 | GSE118354 | GEO

Methodological Issues in Antifungal Susceptibility Testing of Malassezia pachydermatis.

Project description:Reference methods for antifungal susceptibility testing of yeasts have been developed by the Clinical and Laboratory Standards Institute (CLSI) and the European Committee on Antibiotic Susceptibility Testing (EUCAST). These methods are intended to test the main pathogenic yeasts that cause invasive infections, namely Candida spp. and Cryptococcusneoformans, while testing other yeast species introduces several additional problems in standardization not addressed by these reference procedures. As a consequence, a number of procedures have been employed in the literature to test the antifungal susceptibility of Malassezia pachydermatis. This has resulted in conflicting results. The aim of the present study is to review the procedures and the technical parameters (growth media, inoculum preparation, temperature and length of incubation, method of reading) employed for susceptibility testing of M. pachydermatis, and when possible, to propose recommendations for or against their use. Such information may be useful for the future development of a reference assay.

| S-EPMC5715951 | biostudies-literature

Malassezia pachydermatis fungemia in an adult with multibacillary leprosy.

Project description:Malassezia pachydermatis is a relatively rare agent of bloodstream infections. We describe an unusual case of Malassezia fungemia in an adult patient hospitalized for Staphylococcus aureus bacteremia who was also found to have multibacillary leprosy. Treatment of the patient required extensive medical management but resulted in a good outcome.

| S-EPMC4910295 | biostudies-literature

Efficacy of Amitraz plus Metaflumizone for the treatment of canine demodicosis associated with Malassezia pachydermatis.

Project description:This case reports the efficacy of metaflumizone plus amitraz spot-on formulation (ProMeris Duo(R); Fort Dodge) against generalized demodectic mange. A two year-old male dog presented at clinical examination with poor general condition, diffused alopecia, crusted lesions, pruritus, skin scales and pustules. Demodex mites, Malassezia pachydermatis yeasts and bacteria were diagnosed. The dog was treated with cephalexin and topically with metaflumizone plus amitraz spot on formulation at two weeks intervals until two consecutive skin scrapings resulted negative for mites. The number of adult mites statistically decreased at follow-up with a reduction of approximately 42 and 94% at +14 and +28 days post treatment (p.t.) respectively. Nymphs and larvae could not be detected from +28 day p.t. while eggs were no longer present +42 day p.t. The dog was negative for both bacteria and M. pachydermatis at 14 days p.t., coinciding with improved general clinical conditions, recovering skin lesions and no further signs of pruritus. These results show that metaflumizone plus amitraz associated with the antibiotic therapy is highly effective for treating generalized demodectic mange and could also be effective toward controlling M. pachydermatis opportunistic infections.

| S-EPMC2654875 | biostudies-literature

Whole-Genome Sequencing and <i>De Novo</i> Assembly of Malassezia pachydermatis Isolated from the Ear Canal of a Dog with Otitis.

Project description:We have de novo assembled the genome sequence of Malassezia pachydermatis isolated from a canine otitis sample with Nanopore-only long reads. With 99× coverage and 8.23 Mbp, the genome sequence was assembled in 10 contigs, with 6 of them corresponding to chromosomes, improving the scaffolding of previous genome assemblies for the species.

| S-EPMC8201622 | biostudies-literature

Malassezia pachydermatis fungemia in a preterm neonate resistant to fluconazole and flucytosine.

Project description:A case of Malassezia pachydermatis fungemia in a preterm neonate is described. The isolate was identified by rDNA sequencing and was resistant to fluconazole and flucytosine. Since M. pachydermatis does not require lipid supplementation for growth, it can be misidentified as a Candida species. The report highlights M. pachydermatis as a cause of late onset sepsis in preterm neonates and emphasizes the need for prior antifungal susceptibility testing.

| S-EPMC4052354 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data