Abstract
Background
It has been reported that simvastatin, a statin commonly prescribed for its anti-inflammatory and antioxidant effects, has gastroprotective effects in indomethacin and ethanol-induced gastric ulcers. However, the effects of simvastatin on alendronate-induced gastric mucosal injury remain unexplored.
Aim
This study investigated the use of simvastatin for the treatment of alendronate-induced gastric ulcers in rats.
Methods
Female rats were pretreated with vehicle or simvastatin (20 and 60 mg/kg p.o.). After 1 h, the rats received alendronate (50 mg/kg p.o.). Simvastatin was administered once daily for 7 days, and from the fourth day of simvastatin treatment, alendronate was administered once daily for 4 days. On the final day of treatment, 4 h after alendronate administration, animals were euthanized, their stomachs were removed, and gastric damage was measured. Samples of the stomach were fixed in 10 % formalin immediately after their removal for subsequent histopathological assessment. Unfixed samples were weighed, frozen at −80 °C until assayed for glutathione (GSH), malondialdehyde (MDA), and cytokine levels and myeloperoxidase (MPO) activity. A third group was used to measure mucus and gastric secretion.
Results
Pretreatment with simvastatin prevented alendronate-induced macroscopic gastric damage and reduced the levels of MDA and GSH, TNF-α and IL-1β, MPO activity, and mucus levels, in the stomach.
Conclusions
This study demonstrates the protective effects of simvastatin against alendronate-induced gastric ulceration. Maintenance of mucosal integrity, inhibition of neutrophil activity, and reduced oxidative stress associated with decreased gastric acidity may explain the gastroprotective effects of simvastatin.
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Abbreviations
- ALD:
-
Alendronate
- DMSO:
-
Dimethyl sulfoxide
- ELISA:
-
Enzyme-linked immunosorbent assay
- GSH:
-
Glutathione
- IL:
-
Interleukin
- MDA:
-
Malondialdehyde
- MPO:
-
Myeloperoxidase
- NO:
-
Nitric oxide
- SIM:
-
Simvastatin
- TNF:
-
Tumor necrosis factor
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Acknowledgments
The authors gratefully acknowledge the financial support from National Counsel of Technological and Scientific Development—CNPq (Brazil) and Research Foundation for the State of Piauí—FAPEPI.
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All procedures performed in studies involving animals were in accordance with the ethical standards of the institution or practice at which the studies were conducted.
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Carvalho, N.S., Silva, M.M., Silva, R.O. et al. Protective Effects of Simvastatin Against Alendronate-Induced Gastric Mucosal Injury in Rats. Dig Dis Sci 61, 400–409 (2016). https://doi.org/10.1007/s10620-015-3890-7
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DOI: https://doi.org/10.1007/s10620-015-3890-7