Anti-infective activities against herpes simplex virus and selected microbes and anti-inflammatory potential of compounds isolated from Eucalyptus globulus labill.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62157124%3A16370%2F18%3A43876912" target="_blank" >RIV/62157124:16370/18:43876912 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Anti-infective activities against herpes simplex virus and selected microbes and anti-inflammatory potential of compounds isolated from Eucalyptus globulus labill.

Original language description

Herpes simplex virus (HSV) causes numerous mild-to-serious human diseases, including mucocutaneous herpes infections and life-threatening herpes encephalitis. Moreover, herpes viral lesions can be complicated by inflammation and secondary bacterial infections. The development of resistance to antiviral drugs along with the undesirable side effects of these drugs are relevant argue for the development of new anti-HSV drugs with diverse mechanisms of action. Eucalyptus extracts have been used for decades to combat various infectious diseases. We isolated and studied 12 pure compounds and one mixture of two constitutional isomers from the leaves and twigs of E. globulus. The structures were identified by spectroscopic methods (NMR, HR-MS, IR) and all of them were tested for antiherpetic activity against the replication of antigen types HSV-1 and HSV-2. Tereticornate A (12) (IC50: 0.96 mu g/mL; selectivity index CC50/IC50: 218.8) showed the strongest activity in the anti-HSV-1 assay, even greater than acyclovir (IC50: 1.92 mu g/mL; selectivity index CC50/IC50: 109.4), a standard antiviral drug. Cypellocarpin C (5) (EC50: 0.73 mu g/mL; selectivity index CC50/EC50: 287.7) showed the most potent anti-HSV-2 activity, also more intensive than acyclovir (EC50: 1.75 mu g/mL; selectivity index CC50/EC50: 120.0). The antimicrobial activity of the isolated compounds was also evaluated against the bacteria Staphylococcus aureus, Bacillus cereus, Escherichia coli, and Pseudomonas aeruginosa and the yeast Candida albicans. The anti-inflammatory potential was examined using LPS-stimulated THP-1-XBlue (TM) -MD2-CD14 and THP-1 macrophages and focusing on the influences of the NF-kappa B/AP-1 activity and the secretion of pro-inflammatory cytokines IL-1 beta and TNF-alpha.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

30104 - Pharmacology and pharmacy

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů