AI Article Synopsis
- The study investigated how different growth media and aeration affect the hemolytic activity of uropathogenic Morganella morganii strain MM 190.
- The highest hemolysis levels were recorded in LB (59%), DMEM with fetal bovine serum (62%), and urine (53%) during the exponential growth phase, while 2% urea hindered hemolysin production.
- The hemolysin gene hlyA peaked in expression after 2 hours in LB medium, aligning with the observed hemolytic activity, indicating that the short hlyCA transcript is dominant in these conditions.
Article Abstract
We studied the influence of medium composition and aeration on the hemolytic activity of uropathogenic Morganella morganii strain MM 190. The maximum level of hemolysis was observed in LB (59%), DMEM supplemented with fetal bovine serum (62%), and urine (53%) under aeration conditions during the exponential growth phase. The presence of 2% urea in the medium suppressed hemolysin synthesis. Moreover, addition of bacterial culture fluid containing hemolysin to a monolayer of T-24 bladder carcinoma and OKP-GS kidney carcinoma cells led to 25 and 42% cell death, respectively. We found that the maximum expression of the hemolysin gene hlyA was observed in 2-h culture in LB medium, which correlated with the hemolytic activity of the bacteria in this medium and indicated the predominance of the short hlyCA transcript in the cells.
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| http://dx.doi.org/10.1007/s10517-024-05991-7 | DOI Listing |
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