The present study determined the genetic relationships between 41 Staphyloccocus (S.) aureus isolates from bovines, humans, and food using a single enzyme amplified fragment length polymorphism (AFLP) technique. We evaluated the prevalence of staphylococcal enterotoxin (SE) genes and other virulence gene determinants by PCR. The identification of S. aureus was based on culturing and biochemical tests, and by amplifying a specific section of the 23S rRNA gene. PCR amplification of the SE genes (sea, seb, sec, see, seg, seh, and sei) singly or in combination was observed. Most isolates of bovine origin harbored hla (84%) and cap5 (74%), while most isolates from humans harbored hla (73%), cap8 (91%), and fnbA (100%). Strains from food sources were positive for hla (100%), cap5 (100%), and cap8 (64%) unlike isolates from humans or bovines. A single enzyme AFLP analysis revealed a correlation between AFLP clusters of some strains and the source of the isolates The genotypic results of the present study might help to better understand the distribution of prevalent S. aureus clones among humans, bovines, and food and will help control S. aureus infections in Indonesia.
Penelitian ini bertujuan menentukan hubungan clonal methicillin resistance Staphylococcus aureus (MRSA) antara isolat sapi dan manusia. Staphylococcus aureus yang digunakan dalam penelitian ini berasal dari infeksi kulit manusia di Yogyakarta (10 isolat) dan dari susu sapi perah (11 isolat) yang berasal dari Yogyakarta, Solo, dan Boyolali. Identifikasi bakteri dan uji resistensi S. aureus terhadap methicillin telah dilakukan pada penelitian sebelumnya. Hubungan genetika S. aureus antar isolat sapi dan manusia ditentukan menggunakan teknik single enzyme amplified fragment length polymorphism (AFLP). Hasil penelitian diketahui bahwa berdasar analisis AFLP S. aureus memperlihatkan 15 pola genetika (A sampai O) dan dapat dikelompokkan ke dalam 7 klas (I sampai VII). Staphylococcus aureus isolat asal sapi dari daerah yang berdekatan (Boyolali dan Solo), dapat dikelompokkan dalam 1 klas (kecuali 1 isolat sapi dari Yogyakarta), isolat sapi dan manusia dari Yogyakarta dapat dikelompokkan dalam beberapa klas. Masing-masing klas terdapat isolat S. aureus yang telah resisten terhadap MRSA. Hubungan genotipe S. aureus dalam penelitian ini dapat digunakan untuk mengetahui distribusi clonal antara isolat sapi dan manusia dan dapat digunakan sebagai kontrol adanya infeksi MRSA di Indonesia.
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