Insuline (Insulin)Also known as: Human Insulin, Recombinant Insulin

Mechanism of Action

Insulin is a peptide hormone produced by pancreatic beta cells that regulates glucose metabolism by promoting cellular glucose uptake, glycogen synthesis, and lipid synthesis, while inhibiting gluconeogenesis and lipolysis. It binds to the insulin receptor, a receptor tyrosine kinase, activating downstream signaling pathways such as PI3K/Akt and MAPK to exert effects on glucose homeostasis and cellular metabolism.

Reported Research Benefits

Insulin is primarily used in diabetes research to study glucose homeostasis, insulin receptor signaling, and metabolic disorders. It is also used in laboratory protocols to mimic physiological insulin effects in cell culture and animal models and in peptide research for dosing accuracy and delivery mechanism studies.

Dosing Protocol & Reconstitution

Insulin dosing in research varies based on the model and objective. Typical in vitro concentrations range from nanomolar to micromolar, while in vivo research dosing is adjusted according to species and study design to elicit physiological or pharmacological effects. The vendor product is designed for precise delivery of insulin or insulin-like peptides in laboratory settings with refillable pen cartridges and consistent click dosing increments.

Research Notes

Insulin has a short plasma half-life of about 5–10 minutes, necessitating controlled delivery methods for sustained studies. Its efficacy depends on dosage accuracy and timing. Research emphasizes minimizing dosing errors and maintaining peptide stability, often using bacteriostatic water or lyophilized formulations. The vendor pen enables accurate repetitive dosing critical for longitudinal studies.

Research Summary

Insulin is a well-characterized peptide hormone critical for regulating glucose homeostasis in humans and animal models. Landmark clinical trials have demonstrated its efficacy in managing type 1 and type 2 diabetes by facilitating cellular glucose uptake and controlling blood glucose levels. Research has established that insulin therapy reduces microvascular complications, such as retinopathy and nephropathy, improving patient outcomes significantly. However, optimal dosing and delivery remain challenges due to variability in absorption and risk of hypoglycemia, highlighting the need for individualized treatment and ongoing monitoring.

Side Effects & Safety

Common side effects of insulin therapy include hypoglycemia, which can range from mild to severe and require immediate intervention, and localized injection site reactions like redness or swelling. Less frequently, patients may experience weight gain or insulin resistance over prolonged use. Drug interactions can occur, particularly with agents like beta-blockers or corticosteroids, which may mask hypoglycemia or alter glucose metabolism. Insulin is generally considered safe under medical supervision but requires careful dose adjustments to avoid adverse effects. It is not prohibited by the World Anti-Doping Agency (WADA) except in cases of misuse for performance enhancement.

Stability & Storage

Refer to research notes

Molecular Data

Sequence: A Chain: G-I-V-E-Q-C-C-T-S-I-C-S-L-Y-Q-L-E-N-Y-C-N; B Chain: F-V-N-Q-H-L-C-G-S-H-L-V-E-A-L-Y-L-V-C-G-E-R-G-F-F-Y-T-P-K-T
Molecular Formula: C257H383N65O77S6
Molecular Weight: 5807.6 g/mol
CAS Number: 11061-68-0

Primary literature: https://pubmed.ncbi.nlm.nih.gov/1315925/