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Related Concept Videos

Insulin Secretory Vesicles01:05

Insulin Secretory Vesicles

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Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...
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Insulin: Dosing Regimen and Adverse Effects01:16

Insulin: Dosing Regimen and Adverse Effects

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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...
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Insulin Formulations: Types and Delivery01:27

Insulin Formulations: Types and Delivery

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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...
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Insulin: The Receptor and Signaling Pathways01:28

Insulin: The Receptor and Signaling Pathways

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Insulin action is mediated through a receptor tyrosine kinase, akin to the IGF-1 receptor. The number of receptors per cell varies significantly, from 40 on erythrocytes to 300,000 on adipocytes and hepatocytes. The insulin receptor consists of linked α/β subunit dimers, forming a heterotetramer glycoprotein with two extracellular α subunits and two β subunits spanning the membrane. The α subunits inhibit the inherent tyrosine kinase activity of the β subunits, but...
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Diabetes: Management and Pharmacotherapy01:15

Diabetes: Management and Pharmacotherapy

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The therapy for diabetes aims to alleviate hyperglycemia-related symptoms, prevent acute metabolic decompensation, and reduce chronic end-organ complications. Glycemic control is evaluated through short-term (self-monitoring, continuous glucose monitoring) and long-term (A1c, fructosamine) metrics, enabling near real-time tracking of blood glucose levels and reflecting glycemic control over specific time frames.
Insulin remains the cornerstone of treatment for most patients with type 1 and many...
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Diabetes Mellitus: Overview and Type I Subtype01:22

Diabetes Mellitus: Overview and Type I Subtype

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Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
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Updated: Nov 9, 2025

Improving IV Insulin Administration in a Community Hospital
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Voices: Insulin and beyond.

Jesse Roth, Frances M Ashcroft, Claes B Wollheim

    Cell Metabolism
    |April 7, 2021
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    Summary
    This summary is machine-generated.

    Discover the centennial of insulin research, highlighting key advancements in islet biology, insulin resistance, and diabetes therapies. This century of scientific pursuit showcases remarkable collaboration and triumph in understanding the "hormone of hormones".

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    Area of Science:

    • Endocrinology
    • Metabolic Research
    • Diabetes Science

    Background:

    • The past century marks the centennial of insulin discovery and its profound impact on medicine.
    • Insulin, often called the "hormone of hormones," plays a critical role in glucose metabolism.

    Observation:

    • This review chronicles the journey of researchers and clinicians dedicated to understanding insulin.
    • It highlights seminal contributions to islet biology and the mechanisms of insulin resistance.

    Findings:

    • The narrative emphasizes the collaborative spirit and perseverance driving scientific progress in diabetes research.
    • Key breakthroughs in understanding insulin's function and developing diabetes therapies are showcased.

    Implications:

    • The centennial celebration underscores the transformative power of scientific inquiry in advancing human health.
    • Stories of triumph inspire future research in metabolic diseases and endocrinology.