Protective Effects of PACAP in Peripheral Organs

Area of Science:

• Neuropeptide research
• Cellular biology
• Physiology

Background:

• Pituitary adenylate cyclase activating polypeptide (PACAP) is a neuropeptide with known neuroprotective effects.
• PACAP is also expressed in peripheral tissues, but its protective roles there are less understood.

Purpose of the Study:

• To review the cytoprotective effects of PACAP in non-neuronal cell types, peripheral tissues, and organs.
• To summarize existing literature on PACAP's protective roles outside the nervous system.

Main Methods:

• Literature review of studies on PACAP's effects in various peripheral systems.
• Analysis of research on PACAP in digestive, hepatic, pancreatic, urinary, respiratory, dermal, ocular, skeletal, cardiovascular, and cardiac systems.

Main Results:

• PACAP exhibits protective effects in the digestive system (ulcers, ischemia, inflammation), liver (obesity-related pathology), pancreas, and urinary organs (renal pathologies).
• It demonstrates anti-inflammatory and anti-allergic effects in the respiratory system and skin, respectively.
• PACAP protects the cornea, retinal pigment epithelial cells, cartilage, bone, cardiovascular system, and heart against various pathologies, including ischemia, oxidative stress, and inflammatory conditions.

Conclusions:

• PACAP exerts significant cytoprotective effects across a wide range of peripheral non-neuronal tissues and organs.
• The peptide's survival-promoting actions are evident in numerous conditions, underscoring its therapeutic potential.