1.Antibiotic resistance profiles of Staphylococcus pseudintermedius isolated from dogs and cats
Mohamed Abdelrahman Mohamed ; Saleha Abdul-Aziz ; Gurmeet Kaur Dhaliwal ; Siti Khairani Bejo ; Mohammed Dauda Goni ; Asinamai Athliamai Bitrus ; Ibrahim Muhammad Jalo
Malaysian Journal of Microbiology 2017;13(3):180-186
Aims: Antibiotic resistance in Staphylococcus pseudintermedius is increasing gradually towards those antibiotics that
are frequently used leading to limited therapeutic options due to multidrug resistance. The objectives of the study were
to investigate the antibiotic resistance profiles of S. pseudintermedius isolates from pet and stray dogs and cats in
Selangor, Malaysia and to detect the resistance genes (mecA and BlaZ) within the isolates.
Methodology and results: A total of 200 stray and pet dogs and cats were sampled. The samples were cultured onto
Mannitol Salt agar and all the presumptive colonies were subcultured, then identified using biochemical tests and
confirmed by PCR assay targeting the nuc gene. The isolates were subjected to antibiotic susceptibility test against 12
antibiotics. Twenty three isolates (11.5%) were positive to S. pseudintermedius (stray cats, 11/50; stray dogs, 9/50; pet
dogs, 3/50 and pet cats, 0/50). One hundred percent (100%) of the S. pseudintermedius isolates were found to be
resistant to penicillin, erythromycin and tetracycline while they showed 100% susceptible to oxacillin, amoxicillinclavulanic
acid, gentamicin, chloramphenicol, vancomycin, ciprofloxacin, enrofloxacin, cephalexin and rifampicin. The
blaZ gene which codes for β-lactamases production was found in all of the isolates that were resistant to penicillin but
not to methicillin.
Conclusion, significance and impact of study: A high number of S. pseudintermedius from dogs and cats developed
antibiotic resistance which is a public health concern.