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Drug
Information Portal (U.S. National Library of Medicine) - Indinavir
PubChem
Compound
Summary
- Indinavir sulfate
Drug
Bank - Indinavir
KEGG
(Kyoto Encyclopedia of Genes and Genomes) - Indinavir
http://www.ebi.ac.uk/chebi/
- Indinavir
http://www.ncbi.nlm.nih.gov/
- Indinavir
http://www.antimicrobe.org/ Class:Indinavir
is an HIV protease inhibitor. Antiviral Activity: Indinavir
has activity against HIV-1 and HIV-2. Mechanism of Action:
Cleavage of polyproteins by the protease enzyme is an
essential step in the HIV life cycle. After cleavage
the immature virus proteins are assembled into particles
which bud from the cell as mature, infectious virons.
Protease inhibitors compete for the active cleavage
site on the protease enzyme, blocking the cleavage of
the polyproteins and thus the maturation of new viral
particles. Mechanism of Resistance: Higher levels of
protease inhibitor resistance result from the accumulation
of multiple protease inhibitor-resistance mutations.
There are multiple mechanisms of resistance. These include
reduced binding affinity between the inhibitor and the
protease enzyme, alterations in enzyme catalysis, effects
on dimer stability, alterations in inhibitor binding
kinetics and re-shaping of the active site.
http://www.medicinenet.com/ DRUG
CLASS AND MECHANISM: Indinavir is an oral medication
that is used for treating infections with the human
immunodeficiency virus (HIV). It is in a class of drugs
called protease inhibitors which also includes ritonavir
(Norvir), nelfinavir (Viracept) and saquinavir (Invirase,
Fortovase). During infection with HIV, the HIV virus
multiplies within the body's cells. Viruses are released
from the cells and spread throughout the body where
they infect other cells. In this manner, HIV infection
is perpetuated among new cells that the body produces
continually. During the production of the viruses, new
proteins are made. Some of the proteins are structural
proteins, that, is, proteins that form the body of the
virus. Other proteins are enzymes which manufacture
DNA and other components for the new viruses. Protease
is the enzyme that forms the new structural proteins
and enzymes. Indinavir blocks the activity of protease
and results in the formation of defective viruses that
are unable to infect the body's cells. As a result,
the number of viruses in the body (the viral load) decreases.
Nevertheless, indinavir does not prevent the transmission
of HIV among individuals, and it does not cure HIV infections
or AIDS. Indinavir was approved by the FDA in March,
1995.
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