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Related Concept Videos

Regulation of Hormone Secretion01:19

Regulation of Hormone Secretion

Regulation of hormone secretion is a finely tuned orchestration driven by various types of stimuli, encompassing neural, humoral, and hormonal signals. Environmental cues instigate neural stimuli, where action potentials traverse nerve fibers to reach their designated targets. An illustrative scenario is the body's response to stress, wherein the sympathetic nervous system releases epinephrine from the adrenal glands, inducing the well-known 'fight or flight' reaction.
Humoral stimuli,...
Cushing Syndrome II: Pathophysiology01:19

Cushing Syndrome II: Pathophysiology

Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features of the...
The Endocrine System01:29

The Endocrine System

The endocrine system is an extensive network of glands – organs or tissues in the body that create chemicals that control many bodily functions, that secrete hormones, which are chemical messengers that play essential roles in regulating various bodily functions. These hormones are secreted into the bloodstream and travel throughout the body. They require specific receptors to convey signals to cells possessing these corresponding receptors. This complex signaling mechanism ensures that every...
Major Hormones and Their Functions01:27

Major Hormones and Their Functions

Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
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Regulation of Metabolism01:19

Regulation of Metabolism

Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
Hypoglycemia and Glucagon01:15

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Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...

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Related Experiment Video

Updated: Jun 14, 2026

Use of a Central Venous Line for Fluids, Drugs and Nutrient Administration in a Mouse Model of Critical Illness
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Published on: May 2, 2017

[Endocrine regulation in critically ill patients].

C E Wrede1

  • 1Interdisziplinäres Notfallzentrum mit Rettungsstelle, Helios-Klinikum Berlin-Buch. christian.wrede@helios-kliniken.de

Deutsche Medizinische Wochenschrift (1946)
|April 2, 2010
PubMed
Summary

Critically ill patients often experience hormonal imbalances. While intensive glucose control and low-dose hydrocortisone showed initial promise, later studies yielded mixed results, prompting a review of endocrine regulation in critical care.

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Last Updated: Jun 14, 2026

Use of a Central Venous Line for Fluids, Drugs and Nutrient Administration in a Mouse Model of Critical Illness
09:17

Use of a Central Venous Line for Fluids, Drugs and Nutrient Administration in a Mouse Model of Critical Illness

Published on: May 2, 2017

Improving IV Insulin Administration in a Community Hospital
12:08

Improving IV Insulin Administration in a Community Hospital

Published on: June 11, 2012

Area of Science:

  • Endocrinology
  • Critical Care Medicine

Context:

  • Hormonal regulation disturbances are common in critically ill patients.
  • Intensive blood glucose control and low-dose hydrocortisone therapy for sepsis gained attention for potential mortality benefits.

Purpose:

  • To review endocrine dysregulation in critically ill patients.
  • To discuss the evolving understanding of hormonal interventions in critical care.

Summary:

  • Initial positive findings for intensive glucose control and hydrocortisone therapy in critical care were not consistently replicated in large multi-center studies.
  • This review examines these interventions and other endocrine disturbances in critically ill patients.

Impact:

  • Highlights the need for cautious interpretation of early clinical trial results in critical care.
  • Informs clinical practice and guideline development regarding endocrine management in critically ill patients.