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Antigenotoxic, antioxidant and lymphocyte induction effects produced by pteropodine
Rogelio Paniagua-Pérez1, Eduardo Madrigal-Bujaidar, Dolores Molina-Jasso
1Laboratory of Muscular Biochemistry, National Institute of Reahabilitation, National School of Biological Sciences, I.P.N., Carpio y Plan de Ayala s/n, Sto. Tomás, D.F., Mexico.
Basic & Clinical Pharmacology & Toxicology
|January 30, 2009
Summary
Pteropodine from Cat's claw significantly reduces DNA damage caused by doxorubicin in mice. This natural compound also boosts lymphocyte production and scavenges free radicals, showing promising cell protective potential.
Area of Science:
- Pharmacology
- Natural Products Chemistry
- Toxicology
Background:
- Pteropodine is an oxindole alkaloid found in Uncaria tomentosa (Cat's claw).
- Uncaria tomentosa is traditionally used for various ailments and exhibits cytostatic, anti-inflammatory, and antimutagenic properties.
- Oxindole alkaloids are known for diverse biological activities.
Purpose of the Study:
- To evaluate the antimutagenic effects of pteropodine against doxorubicin-induced genotoxicity in mice.
- To assess pteropodine's ability to enhance lymphocyte production.
- To determine pteropodine's free radical scavenging capacity using the DPPH assay.
Main Methods:
- Sister-chromatid exchange (SCE) and micronucleated polychromatic erythrocyte (MNPCE) assays were used to measure genotoxicity in doxorubicin-treated mice.
- Lymphocyte production was quantified after pteropodine administration.
- The DPPH (2,2-diphenyl-1-picrylhydrazyl) assay was employed to assess free radical scavenging activity.
Main Results:
- Pteropodine (100-600 mg/kg) significantly reduced SCE and MNPCE frequencies in mice treated with doxorubicin (10 mg/kg).
- Pteropodine partially ameliorated doxorubicin-induced bone marrow cytotoxicity, indicated by improved polychromatic erythrocyte rates.
- A dose of 600 mg/kg pteropodine increased lymphocyte production by 25.8% over 96 hours.
- Pteropodine demonstrated potent free radical scavenging activity, trapping 98.26% of DPPH radicals at 250 microg/ml.
Conclusions:
- Pteropodine exhibits significant antimutagenic activity in the tested mouse model.
- The findings suggest pteropodine possesses cell-protective properties.
- Further research into pteropodine's mechanisms of action and therapeutic potential is warranted.
