Effect of a Pool of Peptides Isolated from Crotalus durissus terrificus (South American Rattlesnake) Venom on Glucose Levels of Mice Fed on a High-Fat Diet

  • M. E. S. Martins-Santos
  • R. R. Resende
  • F. C. H. Pinto
  • A. M. Soares
  • S. Marangoni
  • E. Oliveira
  • F. Albericio
  • S. L. Da Silva
Article

DOI: 10.1007/s10989-011-9261-0

Cite this article as:
Martins-Santos, M.E.S., Resende, R.R., Pinto, F.C.H. et al. Int J Pept Res Ther (2011) 17: 225. doi:10.1007/s10989-011-9261-0

Abstract

This study investigated the effect of a pool of peptides, isolated from venom of Crotalus durissus terrificus (South American rattlesnake) on glucose concentration in C57BL/6 mice fed on a high-fat diet for 6 weeks. The pool of peptides (molecular mass around of 10 kDa) was obtained using a MidJet apparatus with a cartridge of 10 KDa. The peptide pool was injected intraperitoneally in mice in a single dose (0.5 mg/animal) or multiple doses (0.2 mg/dose). After predetermined times (30, 60, 90 and 120 min) post injections, venous blood samples were collected for enzymatic measurement of serum glucose using a commercial glucose kit (glucose oxidase method). High-fat fed mice showed an increase in blood glucose concentration, in comparison with mice fed on the chow diet. Thirty minutes after a single dose of the peptide pool, high-fat fed animals showed a significant decrease (~47%) in glycemia. However, the glucose level increased again at 60 and 120 min. Conversely, after multiple injections of the pool of peptides administered every 30 min, the blood glucose concentration in the high-fat mice was significantly decreased (~37%) and remained at low levels until 120 min. These results suggest that the tested pool of peptides from Crotalus durissus terrificus contained a peptide (or peptides) with a beneficial role on glucose-lowering action of high-fat fed mice.

Keywords

Bioactive peptides Crotalus durissus terrificus Snake venom Hyperglycemia Glucose 

Abbreviations

T2DM

Diabetes mellitus type 2

PPAR- γ

Peroxisome proliferator-activated receptor-γ

GLP

Glucagon-like peptide analogues

DPP-4

Dipeptidyl peptidase-4

HF

Mice treated with high fat diet

HFS

Mice treated with high fat diet and injected with saline

HFT

Mice treated with high fat diet and injected with a pool of peptide

PP

Pool of peptide

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • M. E. S. Martins-Santos
    • 1
  • R. R. Resende
    • 1
  • F. C. H. Pinto
    • 1
  • A. M. Soares
    • 2
  • S. Marangoni
    • 3
  • E. Oliveira
    • 4
  • F. Albericio
    • 5
    • 6
    • 7
  • S. L. Da Silva
    • 1
  1. 1.Midwest Campus (CCO)Federal University of São João Del Rei (FUSJ)DivinópolisBrazil
  2. 2.Department of Clinical Analysis of the Faculty of Pharmaceutical Sciences of Ribeirão PretoSão Paulo UniversityRibeirão PretoBrazil
  3. 3.Department of Biochemistry of Biology InstituteState University of CampinasCampinasBrazil
  4. 4.Proteomics Platform, Barcelona Science ParkUniversity of BarcelonaBarcelonaSpain
  5. 5.Institute for Research in Biomedicine, Barcelona Science ParkUniversity of BarcelonaBarcelonaSpain
  6. 6.CIBER-BBN, Networking Centre on Bioengineering Biomaterials and NanomedicineBarcelona Science ParkBarcelonaSpain
  7. 7.Department of Organic ChemistryUniversity of BarcelonaBarcelonaSpain

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