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Related Concept Videos

Diversity in Cell Signaling Responses01:22

Diversity in Cell Signaling Responses

The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity. 
Graded and Abrupt Responses
Some signaling systems generate...
Cell Signaling Feedback Loops01:07

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Positive and negative feedback loops are crucial for regulating biological signaling systems. These feedback loops are processes that connect output signals to their inputs.
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Endocrine Signaling01:45

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Endocrine cells produce hormones to communicate with remote target cells found in other organs. The hormone reaches these distant areas using the circulatory system. This exposes the whole organism to the hormone but only those cells expressing hormone receptors or target cells are affected. Thus, endocrine signaling induces slow responses from its target cells but these effects also last longer.
Endocrine Signaling01:45

Endocrine Signaling

Endocrine cells produce hormones to communicate with remote target cells found in other organs. The hormone reaches these distant areas using the circulatory system. This exposes the whole organism to the hormone but only those cells expressing hormone receptors or target cells are affected. Thus, endocrine signaling induces slow responses from its target cells but these effects also last longer.
Autocrine Signaling01:01

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Autocrine signaling is one of the many signaling mechanisms that function inside multicellular organisms to carry out intercellular communication. In this type of signaling mechanism, the same cell that secretes an extracellular signaling molecule also expresses the receptors to bind and respond to that signaling molecule.
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Under normal physiological conditions, autocrine signaling is essential for maintaining homeostasis. This process is well characterized in...
Autocrine Signaling01:01

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Autocrine signaling is one of the many signaling mechanisms that function inside multicellular organisms to carry out intercellular communication. In this type of signaling mechanism, the same cell that secretes an extracellular signaling molecule also expresses the receptors to bind and respond to that signaling molecule.
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Related Experiment Video

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Inducing Dendritic Growth in Cultured Sympathetic Neurons
09:52

Inducing Dendritic Growth in Cultured Sympathetic Neurons

Published on: March 21, 2012

Dendritic signalling and homeostatic adaptation.

Lily M Y Yu1, Yukiko Goda

  • 1MRC Laboratory for Molecular Cell Biology and MRC Cell Biology Unit, Department of Neuroscience, Physiology & Pharmacology, University College London, London, UK.

Current Opinion in Neurobiology
|July 31, 2009
PubMed
Summary
This summary is machine-generated.

Neurons use homeostatic plasticity to adjust network activity. New research reveals these adaptive processes can occur locally within dendrites, involving specific molecular signaling pathways.

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Area of Science:

  • Neuroscience
  • Cellular Biology

Background:

  • Neurons utilize homeostatic plasticity to maintain network stability by adjusting membrane excitability and synaptic strength.
  • Homeostatic processes are crucial for neuronal adaptation to fluctuating network activity.

Purpose of the Study:

  • To review recent findings on homeostatic adaptation occurring within specific neuronal subcompartments, particularly dendrites.
  • To discuss potential molecular signaling pathways and mechanisms underlying local homeostatic regulation.

Main Methods:

  • Review of recent scientific literature and studies.
  • Analysis of molecular and cellular mechanisms involved in neuronal plasticity.

Main Results:

  • Homeostatic plasticity can operate on a local scale within neuronal dendrites, not just globally.
  • A variety of molecules and signaling pathways are implicated in mediating this localized adaptation.

Conclusions:

  • Local homeostatic adaptation in dendrites represents a significant area of recent advancement in understanding neuronal plasticity.
  • Further research into the specific signaling components is essential for elucidating the mechanisms of local homeostatic regulation.