Document Type : Original Article
Faculty of Science and Agriculture, Payame Noor University of Tehran, Tehran, Iran;Faculty of Pharmacy and Pharmaceutical Sciences Research Centre, Tehran University of Medical Sciences, Tehran, Iran
Faculty of Pharmacy and Pharmaceutical Sciences Research Centre, Tehran University of Medical Sciences, Tehran, Iran;Department of Tissue Engineering, Faculty of Advanced Technologies in Medicine, Tehran Unive
4Pharmaceutical Branch, Islamic Azad University of Medical Sciences, Tehran, Iran
Faculty of Pharmacy and Pharmaceutical Sciences Research Centre, Tehran University of Medical Sciences, Tehran, Iran
5Pharmacognosy and Pharmaceutics Department of Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Karaj, Iran
Pancreatic islets have fewer antioxidant enzymes than other tissues and thus are vulnerable to oxidative stress. In the present study, the effects of nine specifically selected Iranian medical plants on the mitochondria function and survival of isolated rat islets were examined.
Materials and Methods
In this experimental study, following laparotomy, pancreases of rats were removed and the islets isolated and incubated in vitro for 24 hours. Logarithmic doses of plant materials were added to the islets and incubated for an additional 24 hours after which the viability of the cells and production of reactive oxygen species (ROS) were measured. Levels of insulin production in relation to static and stimulated glucose concen- trations were also determined.
The tested compounds markedly increased survival of the islet cells, their mi- tochondrial activity, and insulin levels at the same time as reducing production of ROS. Greatest effects were observed in the following order: Peganum harmala, Glycyrrhiza glabra, Satureja hortensis, Rosmarinus officinalis, Teucrium scordium, Aloe vera, Zingiber officinale, Silybum marianum, and Hypericum perforatum at doses of 10, 103, 104, 10, 102, 102, 10-1, 10 and 103μgmL-1, respectively.
Based on these results, we suggest that pretreatment with these select- ed Iranian medical plants can improve the outcomes of pancreas transplants and grafts through the control of oxidative stress damage.