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Insulin Formulations: Types and Delivery

Insulin Formulations: Types and Delivery

Insulin preparations are categorized by their duration of action into short-acting and long-acting types. Two strategies are used to modify insulin's absorption and pharmacokinetic profile: slowing the absorption post-subcutaneous injection, or altering human insulin's amino acid sequence or protein structure. These changes retain the insulin's ability to bind to the insulin receptor, but alter its behavior in solution or after injection.
Short-acting insulins are divided into rapid-acting...

Insulin: Dosing Regimen and Adverse Effects

Insulin: Dosing Regimen and Adverse Effects

Insulin-replacement therapy usually includes both long-acting insulin (basal) and short-acting insulin (to cater to postprandial needs). In a diverse group of type 1 diabetes patients, the average daily insulin dose is typically 0.5-0.7 units/kg body weight. However, obese patients and pubertal adolescents may need more due to insulin resistance.
The basal dose constitutes about 40%-50% of the total daily dose, with the rest as premeal insulin. The mealtime insulin dose should mirror...

Insulin: Biosynthesis, Chemistry, and Preparation

Insulin: Biosynthesis, Chemistry, and Preparation

The endoplasmic reticulum (ER) of pancreatic β-cells synthesizes preproinsulin, which consists of a signal peptide, A and B chains, and a C-peptide. Preproinsulin is then cleaved and folded into proinsulin, which translocates to the Golgi apparatus for sorting and packaging into secretory granules. In these granules, enzymatic clipping generates insulin and C-peptide.
Damage or functional impairment of β-cells inhibits insulin production, leading to diabetes. Diabetes treatment primarily uses...

Oral Hypoglycemic Agents: Glinides

Oral Hypoglycemic Agents: Glinides

Repaglinide (Prandin) and Nateglinide (Starlix), known as glinides, are oral insulin secretagogues that stimulate insulin release from pancreatic β cells by closing the ATP-sensitive potassium channels (KATP channel). Repaglinide controls insulin release from pancreatic β cells by managing potassium efflux. It shares two binding sites with sulfonylureas and also has a unique site, indicating overlapping mechanisms of action. With a rapid onset and a 4-7 hour duration, it effectively manages...

Glucagon-like Receptor Agonists

Glucagon-like Receptor Agonists

Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by the...

Production of Pharmaceuticals

Production of Pharmaceuticals

Industrial insulin production uses genetically engineered E. coli expressing a proinsulin gene controlled by a tryptophan promoter and containing a methionine linker for later cleavage. The cells also carry ampicillin resistance for selective growth. Seed cultures are stored at −80 °C and production begins by thawing a small amount to inoculate starter cultures, which are progressively scaled to a 50,000-L bioreactor. In the bioreactor, E. coli grow in nutrient-rich media under sterile, tightly...

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Related Experiment Video

Updated: Jun 6, 2026

Intra-Omental Islet Transplantation Using h-Omental Matrix Islet filliNG (hOMING)

Intra-Omental Islet Transplantation Using h-Omental Matrix Islet filliNG (hOMING)

Published on: March 14, 2019

Oral insulin.

Sanjay Kalra¹, Bharti Kalra, Navneet Agrawal

¹Bharti Hospital, Karnal, India. brideknl@gmail.com.

Diabetology & Metabolic Syndrome

|November 10, 2010

Summary

This summary is machine-generated.

Developing oral insulin offers a promising alternative for diabetes management. This review explores current strategies and recent advancements in creating effective oral insulin preparations for easier patient use.

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Last Updated: Jun 6, 2026

Intra-Omental Islet Transplantation Using h-Omental Matrix Islet filliNG (hOMING)

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Published on: March 14, 2019

Insulin Injection and Hemolymph Extraction to Measure Insulin Sensitivity in Adult Drosophila melanogaster

Insulin Injection and Hemolymph Extraction to Measure Insulin Sensitivity in Adult Drosophila melanogaster

Published on: June 30, 2011

Area of Science:

Diabetology
Pharmaceutical Research
Drug Delivery Systems

Background:

Diabetes mellitus management traditionally relies on injectable insulin, posing challenges for patient adherence and quality of life.
The development of oral insulin aims to overcome the limitations associated with parenteral insulin therapy.

Purpose of the Study:

To provide a comprehensive overview of diverse approaches in oral insulin development.
To summarize recent findings and innovations in novel oral insulin formulations.

Main Methods:

Review of existing scientific literature and research data on oral insulin.
Analysis of various formulation strategies and delivery technologies for oral insulin.

Main Results:

Multiple strategies are being investigated for oral insulin delivery, including chemical modifications, nanoparticle encapsulation, and permeation enhancers.
Recent data indicate progress in enhancing the stability and bioavailability of oral insulin preparations.

Conclusions:

Oral insulin represents a significant advancement in the field of diabetes treatment.
Continued research and development in novel oral insulin preparations hold great potential for improving patient outcomes and treatment accessibility.