title: Glycogen phosphorylase-a is a common target for anti-diabetic effect of iridoid and secoiridoid glycosides.
abstract: OBJECTIVE
  Diabetes mellitus is characterized by hyperglycemia resulting from defects in insulin secretion, action or both. The use of medicinal plants for the treatment of diabetes mellitus dates back from the Ebers papyrus of about 1550 B.C. One of the major problems with herbal drugs is that the active ingredients are not well defined. It is important to know the active components and their molecular interactions which will help to analyze their therapeutic efficacy and also to standardize the product. There are a number of medicinal plants known for their anti-diabetic effect that possess similarities in their active chemical components, e.g. iridoid and secoiridoid glycosides.
  
  
  METHODS
  In this study, we have compared the structure of various iridoid and secoiridoid glycosides to design a novel pharmacophore. We further developed a structure-activity relationship for the inhibition of glycogen phosphorylase-a.
  
  
  CONCLUSIONS
  By using docking studies, we are proposing, for the first time, that inhibition of glycogen phosphorylase-a activity is a common target for iridoids and secoiridoids to elicit anti-diabetic effects. This article is open to POST-PUBLICATION REVIEW. Registered readers (see "For Readers") may comment by clicking on ABSTRACT on the issue's contents page.
authors.affiliation: Department of Biochemistry, Memorial University, St. John's, NL, Canada.
authors.forename: Hitesh B
authors.initials: HB
authors.lastname: Vaidya
authors.forename: Abeer A
authors.initials: AA
authors.lastname: Ahmed
authors.forename: Ramesh K
authors.initials: RK
authors.lastname: Goyal
authors.forename: Sukhinder K
authors.initials: SK
authors.lastname: Cheema
mesh_terms: D024981:Glycogen Phosphorylase / Q000037:antagonists & inhibitors* / Q000378:metabolism; D007004:Hypoglycemic Agents / Q000737:chemistry / Q000494:pharmacology*; D057889:Iridoid Glycosides / Q000737:chemistry / Q000494:pharmacology*; D062105:Molecular Docking Simulation; D013329:Structure-Activity Relationship
chemical_list: D007004:Hypoglycemic Agents; D057889:Iridoid Glycosides; D024981:Glycogen Phosphorylase