Antimicrobial Peptidomimetics for Recurrent Septicemia Infections: In Vitro Study for Immuno Compromised Disease...

Area of Science:

• Microbiology
• Medicinal Chemistry

Background:

• Bacillus subtilis infections can lead to severe complications like pneumonia and meningitis, particularly in children.
• Current treatments for Bacillus subtilis infections include antibiotics like clindamycin and vancomycin, but novel approaches are needed.
• Recurrent septicemia poses a significant health challenge, necessitating the development of new therapeutic agents.

Purpose of the Study:

• To synthesize and evaluate novel peptidomimetics for their antibacterial activity against Bacillus subtilis.
• To identify specific peptidomimetics effective in combating recurrent septicemia infections.

Main Methods:

• Six peptidomimetics were synthesized, including I-R (C60-soot Ile-Arg) and D-E (C60-soot Asp-Glu).
• Disc diffusion assays were performed using gram-positive Bacillus subtilis strains at various concentrations.
• Antibacterial activity was assessed by measuring the zone of inhibition.

Main Results:

• Peptidomimetics I-R (C60-soot Ile-Arg) and D-E (C60-soot Asp-Glu) demonstrated significant antibacterial activity against Bacillus subtilis.
• Maximum activity was observed at 100 µg/ml, with corresponding inhibition zones of 14 mm for both I-R and D-E.
• Five other synthesized compounds also showed activity against the tested Bacillus subtilis strain.

Conclusions:

• This study provides the first evidence that I-R (C60-soot Ile-Arg) and D-E (C60-soot Asp-Glu) possess antibacterial properties against Bacillus subtilis.
• These peptidomimetics represent promising candidates for the development of new treatments against recurrent septicemia infections.