Davalintide (AC2307), a novel amylin-mimetic peptide: enhanced pharmacological properties over native amylin to reduce food intake and body weight
| Autor: | Victoria F. Turek, Kevin D. Laugero, Pamela A. Smith, Jennifer Athanacio, Barbara L. Roland, James L. Trevaskis, Richard A. Pittner, John Herich, David G. Parkes, J K Wilson, A. Lwin, Sean H. Adams, Soumitra S. Ghosh, Carolyn M. Jodka, J. D. Roth, Calvin Vu, Christine M. Mack, Christopher J. Soares, Michael R. Hanley, James R. Paterniti, Bronislava Gedulin |
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| Rok vydání: | 2009 |
| Předmět: |
Male
endocrine system medicine.medical_specialty Amyloid endocrine system diseases Endocrinology Diabetes and Metabolism media_common.quotation_subject Medicine (miscellaneous) Amylin Peptide macromolecular substances Body weight Weight Gain Satiety Response Rats Sprague-Dawley Eating Weight loss Internal medicine Appetite Depressants medicine Animals media_common chemistry.chemical_classification Nutrition and Dietetics Dose-Response Relationship Drug Body Weight Appetite Davalintide Islet Amyloid Polypeptide Rats Endocrinology chemistry Calcitonin medicine.symptom Energy Metabolism Peptides |
| Zdroj: | International journal of obesity (2005). 34(2) |
| ISSN: | 1476-5497 |
| Popis: | The current set of studies describe the in vivo metabolic actions of the novel amylin-mimetic peptide davalintide (AC2307) in rodents and compares these effects with those of the native peptide.The anti-obesity effects of davalintide were examined after intraperitoneal injection or sustained peripheral infusion through subcutaneously implanted osmotic pumps. The effect of davalintide on food intake after lesioning of the area postrema (AP) and neuronal activation as measured by c-Fos, were also investigated.Similar to amylin, davalintide bound with high affinity to amylin, calcitonin and calcitonin gene-related peptide receptors. Acutely, davalintide displayed greater suppression of dark-cycle feeding and an extended duration of action compared with amylin (23 versus 6 h). Davalintide had no effect on locomotor activity or kaolin consumption at doses that decreased food intake. Davalintide-induced weight loss through infusion was dose dependent, durable up to 8 weeks, fat-specific and lean-sparing, and was associated with a shift in food preference away from high-fat (palatable) chow. Metabolic rate was maintained during active weight loss. Both davalintide and amylin failed to suppress food intake after lesioning of the AP and activated similar brain nuclei, with davalintide displaying an extended duration of c-Fos expression compared with amylin (8 versus 2 h).Davalintide displayed enhanced in vivo metabolic activity over amylin while retaining the beneficial properties possessed by the native molecule. In vitro receptor binding, c-Fos expression and AP lesion studies suggest that the metabolic actions of davalintide and amylin occur through activation of similar neuronal pathways. |
| Databáze: | OpenAIRE |
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