Side-by-Side Comparison · 2026

Pancreatic Polypeptide vs Uroguanylin

Pancreatic Polypeptide vs Uroguanylin — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

Pancreatic Polypeptide
GI Hormone / Satiety

Pancreatic polypeptide (PP) is a 36-amino acid member of the NPY/PYY peptide family secreted by PP cells (F cells) in the pancreatic islets and periphery of islets of Langerhans. Released in a biphasic response to meal ingestion (cephalic phase via vagal activation, then nutrient...

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Uroguanylin
GI Hormone / Satiety

Uroguanylin is a 16-amino acid peptide hormone secreted by enterochromaffin cells of the proximal small intestine in response to meal-induced luminal signals. It activates guanylyl cyclase C (GC-C) receptors both locally in intestinal epithelium and, at supraphysiological concent...

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Key Parameters
Parameter Pancreatic Polypeptide Uroguanylin
Category GI Hormone / Satiety GI Hormone / Satiety
Research Research / Endogenous Hormone Research / Endogenous Hormone
Half-Life 6-7 minutes (plasma) 5-15 minutes (plasma); rapidly degraded
Typical Dose Research: 0.5-2 pmol/kg/min IV infusion Research: 100 pmol/kg IV; ICV for CNS satiety studies
Frequency Endogenous: meal-entrained pulses; research: single infusion Endogenous: meal-entrained; research per session
Route Endogenous (pancreatic PP cells); research IV Endogenous (proximal small intestine enterocytes); research IV
FDA Status Not approved as drug Not approved (uroguanylin itself); analogs plecanatide/linaclotide FDA approved for constipation

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Frequently Asked Questions
What is the difference between Pancreatic Polypeptide and Uroguanylin?
Pancreatic Polypeptide: Pancreatic polypeptide (PP) is a 36-amino acid member of the NPY/PYY peptide family secreted by PP cells (F cells) in the pancreatic islets and periphery of islets of Langerhans. Released in a biphasi... Uroguanylin: Uroguanylin is a 16-amino acid peptide hormone secreted by enterochromaffin cells of the proximal small intestine in response to meal-induced luminal signals. It activates guanylyl cyclase C (GC-C) re...
Which has a longer half-life, Pancreatic Polypeptide or Uroguanylin?
Pancreatic Polypeptide half-life: 6-7 minutes (plasma). Uroguanylin half-life: 5-15 minutes (plasma); rapidly degraded.
Can you stack Pancreatic Polypeptide and Uroguanylin?
Pancreatic Polypeptide and Uroguanylin are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.