Signalling via stress-activated mitogen-activated protein kinases in the cardiovascular system

M A Bogoyevitch1

  • 1Department of Biochemistry, University of Western Australia, Nedlands, Australia. marieb@cyllene.uwa.edu.au

Insights

Mitogen-activated protein kinase (MAPK) cascades are crucial for cardiac hypertrophy and heart failure. Understanding MAPK regulation in cardiac myocytes is key to developing effective cardiovascular disease treatments.

Area of Science:

  • Cardiovascular Physiology
  • Molecular Biology
  • Cell Signaling

Background:

  • Cardiac hypertrophy and heart failure are initiated by diverse stimuli.
  • Intracellular signaling events regulating these conditions are complex.
  • Mitogen-activated protein kinase (MAPK) cascades are increasingly recognized for their role in cardiovascular diseases.

Purpose of the Study:

  • To review recent progress in understanding MAPK regulation and function in the cardiovascular system.
  • To emphasize the role of MAPKs in cardiac ventricular myocytes.
  • To clarify signaling events that regulate cardiac growth, remodeling, and failure.

Main Methods:

  • Literature review of recent research on MAPKs in the cardiovascular system.
  • Focus on signaling pathways linking extracellular stimuli to cardiac gene expression and protein function.
  • Emphasis on studies involving cardiac ventricular myocytes.

Main Results:

  • MAPK cascades are central to the response to physiological, pharmacological, and pathological stimuli.
  • These pathways link diverse extracellular signals to the regulation of cardiac gene expression and protein function.
  • MAPKs play a significant role in the development of cardiac hypertrophy and failure.

Conclusions:

  • Clarifying MAPK signaling is essential for effective treatment of hypertrophic and failing myocardium.
  • MAPK pathways are critical regulators of cardiac growth, remodeling, and failure.
  • Further research into MAPK function in cardiac myocytes will advance cardiovascular disease therapies.

Related Concept Videos

Sympathetic Signaling01:31

Sympathetic Signaling

Sympathetic signaling, a vital part of the autonomic nervous system, plays a crucial role in mobilizing the body's resources in response to stress or emergencies. It involves the transmission of nerve impulses from sympathetic preganglionic fibers to postganglionic fibers. This results in the release of specific neurotransmitters and activation of adrenergic receptors.
Sympathetic preganglionic fibers release the neurotransmitter acetylcholine (ACh) onto the ganglionic neurons in the...
2.5K
MAPK Signaling Cascades01:07

MAPK Signaling Cascades

Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
8.8K
Interactions Between Signaling Pathways01:19

Interactions Between Signaling Pathways

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
7.4K
Psychoneuroimmunology: Cardiovascular Disease01:27

Psychoneuroimmunology: Cardiovascular Disease

Psychoneuroimmunology (PNI) is a multidisciplinary field that examines how psychological factors, particularly stress, interact with the immune system and impact physical health. Research in PNI has shown that chronic or traumatic stress can disrupt both the hypothalamic-pituitary-adrenal axis and the sympathetic nervous system. These disruptions contribute to serious health conditions, including cardiovascular diseases.
A key area of focus in PNI is the relationship between stress and coronary...
597
Paracrine Signaling01:21

Paracrine Signaling

Paracrine signaling allows cells to communicate with their immediate neighbors via secretion of signaling molecules. Such a signal can only trigger a response in nearby target cells because the signal molecules degrade quickly or are inactivated if not taken up. Prominent examples of paracrine signaling include nitric oxide signaling in blood vessels, synaptic signaling of neurons, the blood clotting system, tissue repair/wound healing, and local allergic skin reactions. Nitric oxide as a...
59.8K
Physiological Foundation of Stress01:24

Physiological Foundation of Stress

Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
Role of the Sympathetic Nervous System
Adrenaline triggers the...
770