Abstract
Objectives: Breast cancer (BC) has been the bane of peri-and post-menopausal women, but is now increasingly incident in adolescent/young adult (AYA) females. Pari-passu, there has been a >1000% increase in consumption of fructose as a caloric sweetener in soft drinks, whose top consumers are AYAs. The link between fructose consumption and mammary gland (MG) carcinogenesis is not well-established and the same is investigated and compared against known carcinogens such as 7,12-dimethylbenz(a)anthracene (DMBA) and electromagnetic radiations from mobile phone (EMF-MP). Materials and Methods: Weaned female Wistar rats were randomly grouped as normal control (NOR), fructose control (FRC), DMBA control (DMC), and exposure control (EXC). For 8 weeks, the NOR was provided chow and water, ad libitum, while FRC, DMC, and EXC additionally received 15% fructose drinking solution, ad libitum, DMBA (20 mg/Kg, p.o; at weaning) and EMF-MP (Global System for Mobile Communications [GSM]), 2 h/day daily), respectively. At the end of the study, the groups were compared for the biomarkers of insulin resistance (IR), carbohydrate and lipid metabolism, liver function, cardiometabolic function, oxidative stress, and MG carcinogenesis. Results: The serum markers of MG carcinogenesis (CA 15–3), IR (homeostasis model assessment-IR, area under the curve – oral glucose tolerance test), and liver and cardiometabolic function (serum glutamicoxaloacetic transaminase and homocysteine) were significantly raised (P < 0.05) in FRC versus NOR. The metabolic homeostasis (leptin, ghrelin, triglyceride-Glucose index, glucose-6-phosphatase, triglyceride, high-density lipoprotein, serum glutamic pyruvic transaminase, alkaline phosphatase, and glycogen) and detoxifying ability (free-radical scavenging activity [%] and superoxide dismutase) in FRC were not different from DMC, or EXC. Conclusion: The development of early indicators of MG carcinogenesis due to unhindered fructose drinking by AYA female rats is akin to exposure to DMBA or EMF-MPs that evidence the propensity of the former.
Published Version
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