Abstract
Cigarette smoking remains the leading cause of preventable death and disease in the United States. Despite known risks, 42.1 million Americans continue to smoke, making research into tobacco-related pathologies relevant and necessary. We previously discovered that cigarette smoke exposure leads to tumor progression in the breast via platelet activating factor (PAF) and other phospholipase A₂ (PLA₂) metabolic pathways. These results led us to examine the PLA2 metabolite, prostaglandin E₂ (PGE₂). We observed the expression of PGE₂ in mouse bladder and human heart tissue from nonsmokers and long-term smokers via immunohistochemistry. The urothelium of mouse bladder revealed a significant increase in expression of PGE₂ when compared to the nonsmokers via immunohistochemical analysis. In addition, we examined PGE₂ expression in cardiac biopsy patients and found no significant increase in expression. Our results suggest that while cigarette smoking may play a role in cancer of the breast and bladder, it may not have significant consequences in other pathologies such as heart disease. Our future studies aim at investigating other members of the PLA2 family in bladder for similarities to tumorigenesis and progression in the breast. Overall, we have concluded for the first time that cigarette smoke exposure increases PGE₂ expression in the bladder following exposure. This provides a potential therapeutic target for cigarette smoked-induced tumorigenesis and progression.
Files
Thumbnail | File name | Date Uploaded | Visibility | File size | Options |
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Final_PGE2_Poster__2_.ppt | 19 Jul 2022 | Public | 13.4 MB | ||
0-Final_PGE2_Poster__2_.ppt | 19 Jul 2022 | Public | 13.4 MB |
Metadata
- Subject
Biology
- Institution
Gainesville
- Event location
Floor
- Event date
22 March 2019
- Date submitted
19 July 2022
- Additional information
Acknowledgements:
Shannon Kispert