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  • Pina-Vaz, C (author)

Antifungal activity of local anesthetics against Candida species

  • Article/chapterEnglish2000

Publisher, publication year, extent ...

  • 2000

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  • LIBRIS-ID:oai:lup.lub.lu.se:55f3be38-d417-4723-b7e0-43becd3b0a05
  • https://lup.lub.lu.se/record/1118241URI
  • https://doi.org/10.1155/S1064744900000168DOI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • OBJECTIVE: To evaluate the activity of benzydamine, lidocaine, and bupivacaine, three drugs with local anesthetic activity, against Candida albicans and non-albicans strains and to clarify their mechanism of activity. METHODS: The minimal inhibitory concentration (MIC) was determined for 20 Candida strains (18 clinical isolates and two American Type Culture Collection strains). The fungistatic activity was studied with the fluorescent probe FUN-1 and observation under epifluorescence microscopy and flow cytometry. The fungicidal activity of the three drugs was assayed by viability counts. Membrane alterations induced in the yeast cells were evaluated by staining with propidium iodide, by quantitation of intracellular K+ leakage and by transmission electron microscopy of intact yeast cells and prepared spheroplasts. RESULTS: The MIC ranged from 12.5-50.0 microg/mL, 5.0-40.0 mg/mL, and 2.5-10.0 mg/mL for benzydamine, lidocaine, and bupivacaine, respectively. The inhibitory activity of these concentrations could be detected with the fluorescent probe FUN-1 after incubation for 60 minutes. A very fast fungicidal activity was shown by 0.2, 50, and 30 mg/mL of benzydamine, lidocaine, and bupivacaine, respectively. CONCLUSIONS: At lower concentrations, the tested drugs have a fungistatic activity, due to yeast metabolic impairment, while at higher concentrations they are fungicidal, due to direct damage to the cytoplasmic membrane.

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  • Rodrigues, A G (author)
  • Sansonetty, F (author)
  • Martinez-De-Oliveira, J (author)
  • Fonseca, A F (author)
  • Mårdh, Per-AndersLund University,Lunds universitet,Obstetrik och gynekologi, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Obstetrics and Gynaecology (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine(Swepub:lu)gyn-pam (author)
  • Obstetrik och gynekologi, LundSektion V (creator_code:org_t)

Related titles

  • In:Infectious Diseases in Obstetrics and Gynecology8:3-4, s. 124-1371064-7449

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