Endocrine Abstracts

Aim: Our previousstudies have shown evidence for insulin-releasing actions of some amphibian skin peptides; including esculentin-2CHa. However, there is a need to further improve the potency of some of this peptides and to characterize their other beneficial effects. This study investigates the effect of a Leu31→Lys substitution on the insulin-releasing and immunomodulatory effects of esculentin-2CHa.Methods: BRIN-BD11 cells were incubat...

Aim: Insulin-releasing effects and potential anti-diabetic actions of peptides isolated from the skin secretion of the African clawed frog, Xenopus amieti has been reported. However, peptides such as magainin-AM1 has not been previously studied for its ability to stimulate insulin secretion or promote glucose uptake. This study investigated insulin releasing effects as well as possible underlying mechanisms.Methods: Acute and chronic actions of ...

Aim: Beneficial effects of Jatropha tanjorensis (J. tanjorensis) extracts in African traditional medicinal practices for the management of type 2 diabetes have been reported. However, mechanisms through which these extracts exert their anti-diabetic actions have not been widely studied.Methods and materialsEffects of various aqueous extracts of root, leaf, and bark J. tanjorensis (0-1000 μg/ml) on insulin-release, cytotoxicity and cell viability were investigated using BR...

1=School of Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, UK 2= Department of Biochemistry, Obafemi Awolowo University, Ile-Ife, Nigeria3= IRiD Biosciences, Wilding Road, Ball Green, Stoke-on-Trent, ST6 8BQAim: Vernonia amygdalina extract is used traditionally for type 2 diabetes treatment in developing countries. Studies have reported antidiabetic properties of aqueous...

Aim: Our previous studies indicated the potential antidiabetic actions of the amphibian host-defence peptide, tigerinin-1. Tigerinin-1R was conjugated with gastric inhibitory polypeptide (GIP) as part of strategies for further development of its therapeutic effects. This study characterises the insulin-releasing and cytotoxic properties of the resulting hybrid peptide.Method: Pure G-TGN was commercially synthesized G-TGN. Insulin releasing effects were a...

Aim: The use of commonly consumed vegetables, such as Pterocarpus mildbraedii, in the treatment of metabolic conditions is consistent with the food-as-medicine strategy. To characterise its pharmacological actions, this study assessed insulin-releasing and glucose lowering effects of effects of P. mildbraedii in models of type 2 diabetes.Methods: Clonal pancreatic cells, BRIN-BD11, were treated P. mildbraedii extracts...

Aim: Previous reports indicate therapeutic potentials of tigerinin-1R, isolated from the skin secretions of Hoplobatrachus rugulosus, as an antidiabetic agent. Despite the report of its insulin-releasing effects, the peptide’s mechanism of actions is poorly understood. This study investigates the impact of conjugation of tigerinin-1R with (dAla2)-GIP on the cellular uptake and anti-diabetic actions of the peptide.Method: Amphipathicity, net...