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Published on: April 23, 2018
Insulin in aging and cancer: antidiabetic drug Diabenol as geroprotector and anticarcinogen
Irina G Popovich1, Mark A Zabezhinski, Peter A Egormin
1Department of Carcinogenesis and Oncogerontology, N.N. Petrov Research Institute of Oncology, St. Petersburg 197758, Russia.
Abstract:
The effects of new antidiabetic drug Diabenol (9-beta-diethylaminoethyl-2,3-dihydroimidazo-(1,2-alpha)benzimidazol dihydrochloride) on life span and spontaneous tumor incidence in NMRI and transgenic HER-2/neu mice as well as on colon carcinogenesis induced by 1,2-dimethylhydrazine in rats are studied. It is shown that treatment with the drug failed influence body weight gain dynamics, food and water consumption and the body temperature, slowed down age-related disturbances in estrous function and increased life span of all and 10% most long-living NMRI mice. The treatment with Diabenol inhibited spontaneous tumor incidence and increased the mammary tumor latency in these mice. Diabenol treatment slowed down age-related changes in estrous function in HER-2/neu mice, failed influence survival of these mice and slightly inhibited the incidence and decreased the size of mammary adenocarcinoma metastases into the lung. In rats exposed to 1,2-dimethylhydrazine, treatment with Diabenol significantly inhibited multiplicity of all colon tumors, decreased by 2.2 times the incidence of carcinomas in ascending colon and by 3.1 times their multiplicity. Treatment with Diabenol was followed by higher incidence of exophytic and well-differentiated colon tumors as compared with the control rats exposed to the carcinogen alone (76.3% and 50%, and 47.4% and 14.7%, respectively). Thus, the drug increases survival and inhibits spontaneous carcinogenesis in mice and inhibits colon carcinogenesis in rats.
Insights
The antidiabetic drug Diabenol extended lifespan and reduced tumor incidence in mice. It also inhibited colon carcinogenesis in rats, demonstrating potential anti-cancer properties alongside its diabetes treatment effects.
Area of Science:
- Pharmacology
- Oncology
- Gerontology
Background:
- The novel antidiabetic drug Diabenol's comprehensive effects beyond glycemic control require investigation.
- Understanding Diabenol's impact on aging, spontaneous tumor development, and chemically induced carcinogenesis is crucial for its therapeutic profile.
Purpose of the Study:
- To evaluate the effects of Diabenol on lifespan and spontaneous tumor incidence in NMRI and HER-2/neu mice.
- To assess Diabenol's efficacy in inhibiting 1,2-dimethylhydrazine-induced colon carcinogenesis in rats.
Main Methods:
- Administration of Diabenol to NMRI mice, HER-2/neu mice, and rats exposed to 1,2-dimethylhydrazine.
- Monitoring of lifespan, body weight, food/water consumption, body temperature, estrous function, and tumor incidence/latency.
- Histopathological analysis of colon tumors in rats.
Main Results:
- Diabenol increased lifespan in NMRI mice and slowed age-related estrous disturbances in both mouse models.
- The drug inhibited spontaneous tumor incidence and increased mammary tumor latency in NMRI mice, and reduced lung metastases in HER-2/neu mice.
- Diabenol significantly inhibited colon tumor multiplicity and carcinoma incidence in rats, promoting well-differentiated tumors.
Conclusions:
- Diabenol demonstrates significant anti-cancer properties, including increased survival and inhibition of spontaneous carcinogenesis in mice.
- The drug effectively inhibits colon carcinogenesis in rats, suggesting a broad therapeutic potential.
- Diabenol warrants further investigation for its dual role in diabetes management and cancer prevention/treatment.
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