Substance P: its pharmacology and physiological roles

Area of Science:

• Neuroscience
• Pharmacology
• Biochemistry

Background:

• Substance P was initially identified as a mixture of biologically active substances.
• The peptide component of Substance P is responsible for its gut-contracting, hypotensive, and sialogogic properties.
• Early research faced challenges due to the heterogeneity and purification difficulties of Substance P preparations.

Purpose of the Study:

• To explore the renewed interest in Substance P following its identification and synthesis.
• To confirm early findings on Substance P's distribution and pharmacology using the synthetic endecapeptide.
• To investigate the potential physiological role of Substance P.

Main Methods:

• Synthesis and identification of the endecapeptide Substance P.
• Utilizing purified synthetic endecapeptide for experimental validation.
• Reviewing and confirming early pharmacological and distribution studies.

Main Results:

• The synthetic endecapeptide has allowed for confirmation of earlier findings on Substance P.
• Research is actively stimulating the elucidation of Substance P's functional role.
• Accumulating evidence supports a physiological role for Substance P.

Conclusions:

• Substance P, a synthesized endecapeptide, is crucial in biological systems.
• Evidence increasingly supports Substance P's function as a neurotransmitter in sensory pathways.
• Further research is warranted to fully understand the physiological functions of Substance P.