Journal
ANTICANCER RESEARCH
Volume 38, Issue 3, Pages 1461-1466Publisher
INT INST ANTICANCER RESEARCH
DOI: 10.21873/anticanres.12371
Keywords
HPV; mouse model; inflammation; nutraceutic; diet
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Funding
- Liga Portuguesa Contra o Cancro
- Research Center of the Portuguese Institute of Oncology of Porto [CI-IPOP 37-2016]
- Laboratory for Process Engineering, Environment, Biotechnology and Energy [POCI-01-0145-FEDER-006939]
- FEDER funds through COMPETE2020 - Programa Operacional Competitividade e Internacionalizacao [POCI-01-0145-FEDER-006958, UID/AGR/04033/2013]
- Fundacao para a Ciencia e a Tecnologia (FCT)
- FCT [SFRH/BPD/85462/2012]
- Portuguese Government
- Social European Fund
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Aim: Cyclo-oxygenase-2 (COX2) plays a prominent role in carcinogenesis. This study addresses the effects of two nutraceutical compounds on the expression of COX2 and tumor-associated inflammation in human papillomavirus type 16 (HPV16)-transgenic mice. Materials and Methods: Six-week - old FVB/n mice were supplemented with rutin or curcumin for 24 weeks: HPV16(-/-) no treatment, n=12; HPV16(+/-) no treatment, n=13; HPV16(+/-) rutin, n=12; HPV16(+/-) curcumin, n=13. HPV16-induced skin lesions and their inflammatory infiltrates were studied histologically. COX2 expression was assessed immunohistochemically. Results: Rutin reduced COX2 expression in the dermis (immunostaining score 7.83 versus 11.25 in untreated HPV16-transgenic mice) and epidermis (4.5 versus 10.0). Curcumin led to dermal and epidermal scores of 10.5 and 4.5. Both compounds reduced leukocytic infiltration, but neither prevented epidermal dysplasia. Conclusion: COX2 expression in HPV16-induced lesions may be modulated by nutraceuticals, reducing tumor-associated inflammation. However, this was not sufficient to block carcinogenesis, calling for additional studies focused on combination therapies.
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