Reference
Glossary of Research Terms
Quick definitions of terminology used throughout the Park Ave Peptides reference library. Educational reference only — not medical advice.
- Agonist
- A molecule that binds to a receptor and activates it, producing a biological response.
- Antagonist
- A molecule that binds to a receptor without activating it, blocking the response of an agonist.
- Amino Acid
- The building blocks of peptides and proteins. Twenty standard amino acids form most biological peptides.
- Bacteriostatic Water
- Sterile water containing 0.9% benzyl alcohol, used as a diluent for reconstituting lyophilized peptides in research.
- Bioavailability
- The proportion of a substance that reaches systemic circulation in its active form after administration.
- COA (Certificate of Analysis)
- A document issued by a manufacturer or independent laboratory that reports the identity, purity, and quality of a specific lot of material.
- GLP-1
- Glucagon-like peptide-1, an incretin hormone that regulates insulin secretion, gastric emptying, and appetite.
- GIP
- Glucose-dependent insulinotropic polypeptide, an incretin hormone that stimulates insulin release in response to food intake.
- GHRH
- Growth-hormone-releasing hormone, a hypothalamic peptide that stimulates pituitary release of growth hormone.
- GHRP
- Growth-hormone-releasing peptide, a class of synthetic ghrelin-receptor agonists studied for GH release.
- GPCR
- G-protein-coupled receptor, a major class of cell-surface receptors that transduce extracellular signals through G proteins.
- Half-Life
- The time required for the concentration of a substance in the body to decrease by half.
- HPLC
- High-performance liquid chromatography, the standard analytical method for measuring peptide purity.
- Incretin
- A class of metabolic hormones (GLP-1, GIP) that stimulate insulin secretion after food intake.
- IGF-1
- Insulin-like growth factor 1, a peptide hormone produced primarily in the liver in response to growth hormone signaling.
- In Vitro
- Latin for "in glass" — experiments performed in a controlled laboratory environment outside a living organism.
- In Vivo
- Latin for "within the living" — experiments performed in a whole living organism.
- Lyophilized
- Freeze-dried. A peptide is dehydrated under vacuum to a stable powder for storage.
- Mass Spectrometry
- An analytical technique that measures mass-to-charge ratio of ions, used to confirm peptide identity and molecular weight.
- Mitochondria
- Organelles responsible for cellular energy production through oxidative phosphorylation.
- Molecular Weight
- The mass of one molecule of a substance, typically expressed in daltons (Da) for peptides.
- Nootropic
- A substance studied for its potential to enhance cognitive function, memory, or attention.
- Peptide
- A short chain of amino acids linked by peptide bonds, typically fewer than 50 residues.
- Pharmacokinetics
- The study of how a substance is absorbed, distributed, metabolized, and eliminated by the body.
- Preclinical
- Research conducted in laboratory or animal models before human clinical trials.
- Reconstitution
- The process of dissolving a lyophilized peptide in a sterile diluent to prepare a working solution.
- Receptor
- A protein molecule that receives chemical signals from outside a cell and triggers a response.
- Professional Use Only
- A designation indicating a material is supplied for use by licensed practitioners and qualified professionals.
- Sequence
- The ordered series of amino acids that make up a peptide, typically written using one- or three-letter codes.
- Subcutaneous
- Administered into the tissue layer just beneath the skin; abbreviated "SC" or "SQ" in research notation.
- Thymic Peptide
- A peptide derived from or based on factors secreted by the thymus, often studied in immune research.