| Autor: |
Karthik, Mohan, Paari, Ellapan, Sivasankaran, Shanmugam M., Elanchezhiyan, Chakaravarthy, Manoharan, Shanmugam |
| Předmět: |
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| Zdroj: |
Tropical Journal of Natural Product Research; Nov2023, Vol. 7 Issue 11, p5250-5255, 6p |
| Abstrakt: |
Apoptosis, a systematic and harmonized sequential process, eliminates cells that contain potentially dangerous mutations. Cancer cells evade apoptosis by interfering with the functions of pro-apoptotic and anti-apoptotic proteins. The efficiency of ursolic acid-loaded chitosan nanoparticles (UACNP) in modulating pro-apoptotic and anti-apoptotic markers' expression towards tumor inhibition was assessed using immunohistochemistry in 7,12-dimethylbenz(a)anthracene (DMBA)-induced oral carcinoma in golden Syrian hamsters. An oral tumor was developed in the buccal pouch of hamsters by painting with DMBA, three times per week for 14 weeks. While buccal mucosa mutant p53 and Bcl-2 proteins were overexpressed, Bax, Bid, Bad, caspase-3 and 9 were downregulated in tumor-bearing hamsters. UACNP administration (12.5 mg/Kg b.w) to hamsters, on alternative days to DMBA exposure reverted the immunoexpression pattern of apoptotic markers towards the inhibition of tumor formation. The present investigation also observed that UACNP can improve apoptotic marker expression in the chemotherapeutic phase (DMBA = UACNP) as evidenced by the reduction in the number of tumors as well as tumor size. The observed findings thus highlight the apoptotic efficiency of UACNP, which could probably be attributed to its tumor-preventing efficacy in DMBA-induced oral carcinogenesis. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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