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Related Concept Videos

Long-term Potentiation01:35

Long-term Potentiation

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Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
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Intracellular Signaling Cascades01:24

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Once a ligand binds to a receptor, the signal is transmitted through the membrane and into the cytoplasm. The continuation of a signal in this manner is called signal transduction. Signal transduction only occurs with cell-surface receptors, which cannot interact with most components of the cell, such as DNA. Only internal receptors can interact directly with DNA in the nucleus to initiate protein synthesis. When a ligand binds to its receptor, conformational changes occur that affect the...
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Calmodulin-dependent Signaling01:16

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Calmodulin (CaM) is a calcium-binding protein in eukaryotes that controls various calcium-regulated cellular processes. It has four calcium-binding sites that bind calcium to form the calcium-calmodulin ( Ca2+-CaM) complex. GPCR stimulation increases the calcium levels in the cells that bind to CaM and induces a conformational change.
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GPCRs Regulate Adenylyl Cylase Activity01:09

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Some GPCRs transmit signals through adenylyl cyclase (AC), a transmembrane enzyme. AC helps synthesize second messenger cyclic adenosine monophosphate (cAMP). AC catalyzes cyclization reaction and converts ATP to cAMP by releasing a pyrophosphate. The pyrophosphate is further hydrolyzed to phosphate by the enzyme pyrophosphatase, which drives cAMP synthesis to completion. However, cAMP is rapidly degraded to 5′ AMP by the enzymes phosphodiesterase (PDE), preventing overstimulation of...
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Desensitization and Tachyphylaxis01:20

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Tachyphylaxis is described as a rapid decrease in response to a drug after repeated or continuous administration of the same drug dose. It is a phenomenon where the body becomes less responsive to a particular substance or intervention over time, requiring higher doses or stronger interventions to achieve the same effect. It results from adaptive changes in the body's receptors, signaling pathways, or physiological processes that occur in response to prolonged exposure to a stimulus.
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Long-term Potentiation01:25

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Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
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Related Experiment Video

Updated: Jan 18, 2026

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Cyclic AMP Accumulation in Migraine Induction.

Ana B Chelse1, Leon G Epstein1

  • 1Division of Neurology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL; Departments of Pediatrics and Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL.

Pediatric Neurology Briefs
|March 3, 2016
PubMed
Summary
This summary is machine-generated.

Researchers studied if increased cyclic AMP in cells triggers migraine attacks in 14 patients. This investigation focused on migraine without aura, exploring a potential cellular mechanism behind the condition.

Keywords:
Cyclic adenosine monophosphateHeadacheMigraine

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Area of Science:

  • Neuroscience
  • Cellular Biology
  • Medical Research

Background:

  • Migraine is a complex neurological disorder with various potential triggers.
  • Intracellular signaling pathways, including cyclic AMP (cAMP), play crucial roles in neuronal function.
  • Understanding the specific cellular mechanisms that precipitate migraine attacks is essential for developing targeted therapies.

Purpose of the Study:

  • To investigate the potential role of intracellular cyclic AMP (cAMP) accumulation in inducing migraine attacks.
  • To examine the direct effect of cAMP modulation on migraine pathophysiology in patients without aura.

Main Methods:

  • The study involved 14 participants diagnosed with migraine without aura.
  • Researchers monitored intracellular cyclic AMP levels and their correlation with the onset of migraine attacks.
  • Specific methods for measuring intracellular cAMP accumulation and inducing/monitoring attacks were employed (details not provided in the abstract).

Main Results:

  • The study aimed to determine if elevated intracellular cAMP levels could trigger migraine attacks.
  • Findings regarding the direct link between cAMP accumulation and migraine induction in this cohort are expected.

Conclusions:

  • The findings will elucidate the involvement of intracellular cAMP in migraine pathogenesis.
  • This research could pave the way for novel therapeutic strategies targeting cAMP signaling pathways for migraine treatment.