Protective Effects of Oleanane and Ursane Type Triterpenoids from Origanum majorana Against the Formation of Advanced Glycation Endproducts
Rosa Martha Pérez Gutiérrez*, Jahel Valdes Sauceda, Jose Maria Mota Flores and Blanca Elizabeth Lopez Silva
Research Laboratory of Natural Products, School of Chemical Engineering and Extractive Industries-IPN, Unidad Profesional Adolfo Lopez Mateos, Zacatenco, D.F. CP 07758, Mexico
- *Corresponding Author:
- Rosa Martha Pérez Gutiérrez
Research Laboratory of Natural Products.
School of Chemical Engineering and Extractive
Industries-IPN, Unidad Profesional Adolfo
Lopez Mateos, Zacatenco, D.F. CP 07758, Mexico
Tel: +57296000 ext 55142
E-mail: [email protected]
Received date: January 22, 2016; Accepted date: February 15, 2016; Published date: February 19, 2016
Citation: Pérez Gutiérrez RM, Sauceda JV, Mota Flores JM, Lopez Silva BE (2016) Protective Effects of Oleanane and Ursane Type Triterpenoids from Origanum majorana Against the Formation of Advanced Glycation Endproducts. Med chem (Los Angeles) 6:105-114. doi:10.4172/2161-0444.1000333
Copyright: © 2016 Pérez Gutiérrez RM, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
This study investigates the causal-relationships between human capital and economic growth, and between infrastructure and economic growth in Arab World countries. The study covers the period from 1974 to 2013 using annual data obtained from the World Bank. Most importantly, the study uses advanced Granger causality for panel data with fixed coefficients which introduced by Venet and Hurlin. The full sample has been divided into a sub-groups according the income level, namely, rich countries and non-rich countries, to check if there any existence of the structural differences. The results indicate that the causal-relationships between variables of interest are highly heterogeneous in Arab World. However, there is a feedback relationship between human capital and economic growth and between infrastructure and economic growth in the full sample countries and rich countries group. Also, the results found a oneway causality running from economic growth to human capital and infrastructure in non-rich countries group.