Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Arteriolar myogenic signalling mechanisms: Implications for local vascular function.

Michael A Hill1, Michael J Davis, Gerald A Meininger

  • 1Department of Physiology and Pharmacology, University of New South Wales, Sydney, New South Wales 2052, Australia. Michael.hill@unsw.edu.au

Clinical Hemorheology and Microcirculation
|March 18, 2006
PubMed
Summary

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Rapid growth of a long-standing dermal nodule in a young Black man: Clinical correlation in an ALK-rearranged epithelioid/spindle cell tumor.

JAAD case reports·2026
Same author

Unresolved mechanisms: a hypothesized spatial regulation of myosin light chain phosphorylation within the walls of resistance arteries.

Frontiers in physiology·2026
Same author

The Impact of Early Incomplete Sections on Mohs Micrographic Surgery Margin Assessment.

Clinical and experimental dermatology·2026
Same author

Plasminogen Activator Inhibitor-1 Controls Mitochondrial Oxidative Stress in Vascular Smooth Muscle Cells and Coronary Arteries.

Thrombosis and haemostasis·2026
Same author

Beefing Up Awareness: Navigating Alpha-Gal Syndrome.

Clinical journal of oncology nursing·2026
Same author

Smooth muscle cell estrogen receptor alpha promotes arterial stiffness in the absence of estradiol.

bioRxiv : the preprint server for biology·2026

Myogenic constriction in arterioles, crucial for regulating blood pressure, involves vascular smooth muscle responding to intraluminal pressure. Cellular mechanisms linking pressure to contraction, particularly ion channel involvement, require further investigation.

Area of Science:

  • Physiology
  • Vascular Biology
  • Mechanobiology

Background:

  • Arterioles exhibit myogenic constriction, a pressure-dependent vascular smooth muscle response independent of external neural or hormonal signals.
  • This intrinsic tone is vital for setting peripheral resistance, enabling vasodilation, and controlling capillary pressure in microvascular hemodynamics.

Purpose of the Study:

  • To elucidate the precise cellular mechanisms underlying the detection of intraluminal pressure and the initiation of myogenic constriction in arterioles.
  • To investigate the roles of specific ion channels, signaling pathways, and calcium dynamics in mediating this pressure-induced contraction.

Main Methods:

  • Utilized isolated, cannulated arteriole preparations and freshly dispersed smooth muscle cells.
  • Examined the effects of intraluminal pressure/cell stretch on membrane potential, ion channel activity, and downstream signaling cascades.

Related Experiment Videos

Main Results:

  • Increased intraluminal pressure causes smooth muscle cell depolarization and opening of L-type voltage-gated Ca2+ channels (VGCC).
  • This leads to Ca2+-dependent activation of myosin light chain kinase and actomyosin contraction.
  • Potential roles for mechanosensitive ion channels (e.g., TRPM4, TRPC6) and extracellular matrix-integrin interactions in initiating depolarization are suggested.

Conclusions:

  • While the link between pressure, depolarization, and VGCC activation is established, the initial mechanotransduction events remain unclear.
  • Further research is needed to define the precise roles of various ion channels, calcium pools, and signaling molecules in myogenic constriction and adaptive vascular remodeling.