Cytotoxicity to cultured human keratinocytes of topical antimicrobial agents

Candida glabrata is an opportunistic pathogen, associated with endocarditis, meningitis, and disseminated disease, and also with complicated vaginitis. Essential oils derived from aromatic plants are known in traditional medicine as antimicrobial agents and have antifungal properties. The aim of this work was to evaluate whether 12 tested essential oils (tea tree, laurel, anise, basil, bergamot, lavender, mint, oregano, grapefruit, rosemary, winter savory, and ginger) could have a transverse effect on C. glabrata sensitive strains but above all on strains resistant to the three main azole antifungals used (clotrimazole, fluconazole, itraconazole). For this reason, different strains of C. glabrata, vaginal isolated, were characterized (disk diffusion assay, minimal inhibitory concentration) with respect to their response to such antifungals. Electron microscopy analyses were performed to examine cellular damages in depth. Subsequently, we wanted to evaluate the effect of the oils on human cells to estimate their potential cytotoxicity. Oregano and winter savory were the two most effective essential oils, inducing growth inhibition, cell damage of C. glabrata strains (both sensitive and resistant to azole antifungal drugs), and medium–high level of toxicity against human keratinocytes. The results of this work support the research for new alternatives or complementary therapies against vaginal candidiasis.

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Local antibiotic therapy of bacterial infectious and inflammatory diseases of the anterior segment of the eye (literature review)

POINT OF VIEW EAST – WEST ◽

10.25276/2410-1257-2021-2-89-93 ◽

2021 ◽

pp. 89-93

Author(s):

A.E. Babushkin ◽

Keyword(s):

Antibacterial Agents ◽

Antimicrobial Agents ◽

High Efficiency ◽

Inflammatory Diseases ◽

Anterior Segment ◽

Eye Diseases ◽

Good Tolerability ◽

Wide Range ◽

Local Antibiotic ◽

Topical Antimicrobial

Inflammatory eye diseases are one of the most important problems of ophthalmology. They can be caused by various pathogens of the infection, which is still more often bacterial. Therapy of bacterial inflammatory diseases of the eye involves the use of antibacterial drugs (sulfonamides, antiseptics, nitrofurans, etc.), among which antibiotics are of primary importance. Of this group of drugs, in this review article, special attention is paid to quinolones, mainly synthetic fluoroquinolones, which are distinguished by a wide range of bactericidal action, fairly high efficiency, low level of resistance of microorganisms to it and the frequency of side effects, as well as good tolerability by patients, i.e. they best meet the requirements for modern topical antimicrobial agents. In certain clinical situations and indications, it is advisable to use ophthalmic antiseptics and combined preparations containing several antibiotics of different effects at once, or an antibiotic and a corticosteroid. Key words: infectious and inflammatory eye diseases, antibacterial agents, antibiotics, combined preparations, antiseptics.

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