Jones, Sherry Usun and Chew, Ching Hoong and Yeo, Chew Chieng and Abdullah, Fatimah Haslina and Othman, Norlela and Kee, Boon Pin and Chua, Kek Heng and Puah, Suat Moi (2023) The phenotypes and genotypes associated with biofilm formation among methicillin-susceptible Staphylococcus aureus (MSSA) isolates collected from a tertiary hospital in Terengganu, Malaysia. International Microbiology, 26 (4). pp. 841-849. ISSN 1139-6709, DOI https://doi.org/10.1007/s10123-023-00335-3.
Full text not available from this repository.Abstract
Methicillin-susceptible Staphylococcus aureus (MSSA) is an important nosocomial pathogen worldwide. This study aims to investigate the in vitro biofilm-forming ability of clinical MSSA isolated from various sources in the main public tertiary referral hospital in Terengganu, Malaysia and to detect the presence of biofilm-associated and regulatory genes among these isolates. A total of 104 MSSA isolates pus (n = 75), blood (n = 24), respiratory secretions (n = 2), eye (n = 2), and urine (n = 1)] were investigated for slime production and biofilm formation using Congo red agar and crystal violet microtitre plate, respectively. Fifteen MSSA isolates with varying degrees of biofilm formation were selected for validation via a real-time cell analyser. All isolates were screened for microbial surface components recognising adhesive matrix molecules (MSCRAMM) and accessory gene regulator (agr) using polymerase chain reaction assay. A total of 76.0% (79/104) isolates produced slime layer, while all isolates developed biofilm as follows: 52.8% (55/104) strong biofilm producers, 40.4% (42/104) intermediate biofilm producers, and 6.7% (7/104) weak biofilm producers. A total of 98.1% (102/104) isolates carried at least one of the screened MSCRAMM gene(s) with the eno gene detected at the highest rate (87.5%, 91/104), while the sasG gene was significantly associated with strong biofilm production (p = 0.015). Three agr groups, 1, 2, and 3, were detected among the MSSA isolates with a predominance of agr-3 (32.7%, 34/104). In conclusion, biofilm formation varied greatly among clinical MSSA isolates, and the presence of sasG gene and agr-1 may play important role in initiating MSSA infections via biofilm formation.
| Item Type: | Article |
|---|---|
| Funders: | Fundamental Research Grant Scheme from the Malaysian Ministry of Higher Education (FRGS/1/2019/SKK08/UM/02/5), Institut Merieux-MSIDC Young Investigator (IF044-2020) |
| Uncontrolled Keywords: | Biofilms; Staphylococcus aureus; Glycocalyx; MSCRAMM proteins |
| Subjects: | Q Science > QR Microbiology |
| Divisions: | Faculty of Medicine > Biomedical Science Department |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 21 Jul 2025 02:48 |
| Last Modified: | 21 Jul 2025 02:48 |
| URI: | http://eprints.um.edu.my/id/eprint/50881 |
Actions (login required)
 |
View Item |
