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Related Concept Videos

Insulin Formulations: Types and Delivery01:27

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 Effects01:16

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...
Glucose Homeostasis: Pancreatic Islets and Insulin Secretion01:27

Glucose Homeostasis: Pancreatic Islets and Insulin Secretion

The pancreatic islets comprising only 1%-2% of the volume are highly vascularized and innervated mini-organs. They contain five endocrine cell types, including β cells that secrete insulin, which is synthesized as a single polypeptide chain, preproinsulin, processed to proinsulin, and finally to insulin and C-peptide. This process is complex and regulated, involving the Golgi complex, the endoplasmic reticulum, and the secretory granules of the β cell.
Insulin and C-peptide are co-secreted in...
Insulin: Biosynthesis, Chemistry, and Preparation01:25

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...
Parenteral Drug Delivery Systems: Injectables, Implants, and Infusion Devices01:28

Parenteral Drug Delivery Systems: Injectables, Implants, and Infusion Devices

Parenteral drug delivery systems play a crucial role in modern therapeutics by enabling the direct administration of drugs into the systemic circulation, bypassing the gastrointestinal tract. These systems are particularly valuable for poorly absorbed oral medications that are unstable in the digestive environment or require rapid onset or sustained therapeutic levels. Delivery is achieved through intravenous, intramuscular, or subcutaneous routes, each selected based on the drug's properties...
Production of Pharmaceuticals01:30

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 14, 2026

Improving IV Insulin Administration in a Community Hospital
12:08

Improving IV Insulin Administration in a Community Hospital

Published on: June 11, 2012

Insulin pumps.

J Pickup1

  • 1Metabolic Unit King's College London School of Medicine, Guy's Hospital, London SE19RT, United Kingdom. john.pickup@kcl.ac.uk

International Journal of Clinical Practice. Supplement
|April 10, 2010
PubMed
Summary
This summary is machine-generated.

Insulin pump therapy, used for over 30 years in type 1 diabetes management, still faces questions regarding its comparison to modern injection therapy and the benefits of advanced pump technologies. Further research is needed to clarify clinical indications and optimize patient care.

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Area of Science:

  • Endocrinology
  • Metabolic Diseases
  • Diabetes Management

Background:

  • Insulin pump therapy is a long-established treatment for type 1 diabetes.
  • Despite its history, significant concerns remain regarding its efficacy and application.

Purpose of the Study:

  • To evaluate the comparative effectiveness of insulin pump therapy versus modern injection therapies.
  • To assess the benefits of advanced insulin pump technologies, including onboard calculators and data download capabilities.
  • To explore the consensus on clinical indications for insulin pump use.

Main Methods:

  • Review of existing literature and clinical data comparing insulin pump therapy with multiple daily injections.
  • Analysis of the impact of sophisticated pump features on glycemic control and patient outcomes.
  • Discussion of current clinical guidelines and expert opinions on insulin pump indications.

Main Results:

  • Ongoing debate exists regarding the superiority of pumps over advanced injection methods.
  • The clinical utility of advanced pump features requires further validation.
  • Lack of consensus on specific indications for insulin pump therapy persists.

Conclusions:

  • Insulin pump therapy remains a valuable tool for selected individuals with type 1 diabetes.
  • Further research is essential to address current concerns and refine treatment guidelines.
  • Optimizing the use of insulin pump technology requires a clearer understanding of its benefits and indications.