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Abstract Title:

Inhibitory effect of carnosic acid on HIV-1 protease in cell-free assays [corrected].

Abstract Source:

J Nat Prod. 1993 Aug;56(8):1426-30. PMID: 8229021

Abstract Author(s):

A Paris, B Strukelj, M Renko, V Turk, M Pukl, A Umek, B D Korant

Article Affiliation:

Department of Biochemistry, Jozef Stefan Institute, Ljubljana, Slovenia.

Abstract:

In order to find new effective HIV protease inhibitors, two diterpenes (carnosic acid [1] and carnosol [5]) were isolated from rosemary (Rosmarinus officinalis L.), and rosmanol [2] and semisynthetic derivatives (7-O-methylrosmanol [3], 7-O-ethylrosmanol [4], and 11,12-O,O-dimethylcarnosol [6]) were prepared. The inhibitory activity of all six compounds against HIV-1 protease was tested. The carnosic acid [1] showed the strongest inhibitory effect (IC90 = 0.08 micrograms/ml). The same compound was also assayed against HIV-1 virus replication (IC90 = 0.32 micrograms/ml). The cytotoxic TC90 on H9 lymphocytes was 0.36 micrograms/ml, which is very close to the effective antiviral dose. Additionally, the tested compounds did not inhibit cellular aspartic proteases cathepsin D and pepsin at the concentration range up to 10 micrograms/ml [corrected].

Study Type : In Vitro Study

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Sayer Ji
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