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| Content Provider | Springer Nature Link |
|---|---|
| Author | Liaqat, Iram Sumbal, Fareeha Sabri, Anjum Nasim |
| Copyright Year | 2009 |
| Abstract | Despite the constantly increasing need for new antimicrobial agents, antibiotic drug discovery and development seem to have greatly decelerated in recent years. Presented with the significant problem of advancing antimicrobial resistance, the global scientific community has attempted to find alternative solutions; one of the most promising ones is the evaluation and use of old antibiotic compounds. A number of old antibiotic compounds, such as aminoglycosides, chloramphenicol, and tetracycline, are re-emerging as valuable alternatives for the treatment of difficult-to-treat infections. This study examined the in vitro potency for biofilm formation of five isolates (Klebsiella sp., Pseudomonas aeruginosa, Achromobacter sp., Klebsiella pneumoniae, and Bacillus pumilis) and the effects of antibiotics on these biofilms. Furthermore the quantitative analysis of planktonic, loosely attached cells, and their susceptibility to antibiotics was also determined. Twitching motility was observed to determine any effect in the biofilm forming capability of the isolates. All the isolates tested were efficient biofilm-forming strains in the polypropylene and borosilicate test tubes. Standard bacterial enumeration technique and CV staining produced equivalent results both in biofilm and planktonic assays. The biofilm formation of all the strains was affected in the presence of tetracycline or chloramphenicol. Highly significant decrease (P < 0.01) in biofilm formation was observed by treatment with chloramphenicol compared to tetracycline. In addition, the two antibiotics also affected adversely the planktonic and loosely attached cells of all isolates. Thus, testing the effects of older antibiotics on biofilms may supply useful information in addition to standard in vitro testing, particularly in diseases where biofilm formation is involved in the pathogenesis. |
| Starting Page | 212 |
| Ending Page | 220 |
| Page Count | 9 |
| File Format | |
| ISSN | 03438651 |
| Journal | Current Microbiology |
| Volume Number | 59 |
| Issue Number | 2 |
| e-ISSN | 14320991 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2009-05-30 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Biotechnology Microbiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Microbiology Applied Microbiology and Biotechnology |
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