ArticleAmerican journal of physiology. Heart and circulatory physiology2023
Endothelial mechanisms for inactivation of inflammation-induced hyperpermeability.
Article in American journal of physiology. Heart and circulatory physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 11 citations in OpenAlex.
- Active Endothelial Inactivation of Hyperpermeability: The Role of Nitric Oxide-Driven cAMP/Epac1 Signaling.Journal of cardiovascular development and disease · 2025Review
- Role of exchange proteins directly activated by cAMP signaling in vascular remodeling.Pharmacological reviews · 2025Review
- Endothelial TRPV4-Cx43 signalling complex regulates vasomotor tone in resistance arteries.The Journal of physiology · 2025Article
- Review
- Electroacupuncture enhances mesenchymal stem cell therapy via improved perfusion and inflammation modulation in peripheral nerve injury: an IVIM-MRI study in rats.Frontiers in neurology · 2025Article
- Subcellular Localization Guides eNOS Function.International journal of molecular sciences · 2024Review
- Endothelial TRPV4/Cx43 Signaling Complex Regulates Vasomotor Tone in Resistance Arteries.bioRxiv : the preprint server for biology · 2024Article
- Impact of Matrix Gel Variations on Primary Culture of Microvascular Endothelial Cell Function.Microcirculation (New York, N.Y. : 1994) · 2024Article
- Edema and lymphatic clearance: molecular mechanisms and ongoing challenges.Clinical science (London, England : 1979) · 2023Review
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Authors and funding
15 authors at 4 institutions in 3 countries.
Funding
Abstract
Microvascular hyperpermeability is a hallmark of inflammation. Many negative effects of hyperpermeability are due to its persistence beyond what is required for preserving organ function. Therefore, we propose that targeted therapeutic approaches focusing on mechanisms that terminate hyperpermeability would avoid the negative effects of prolonged hyperpermeability while retaining its short-term beneficial effects. We tested the hypothesis that inflammatory agonist signaling leads to hyperpermeability and initiates a delayed cascade of cAMP-dependent pathways that causes inactivation of hyperpermeability. We applied platelet-activating factor (PAF) and vascular endothelial growth factor (VEGF) to induce hyperpermeability. We used an Epac1 agonist to selectively stimulate exchange protein activated by cAMP (Epac1) and promote inactivation of hyperpermeability. Stimulation of Epac1 inactivated agonist-induced hyperpermeability in the mouse cremaster muscle and in human microvascular endothelial cells (HMVECs). PAF induced nitric oxide (NO) production and hyperpermeability within 1 min and NO-dependent increased cAMP concentration in about 15-20 min in HMVECs. PAF triggered phosphorylation of vasodilator-stimulated phosphoprotein (VASP) in a NO-dependent manner. Epac1 stimulation promoted cytosol-to-membrane eNOS translocation in HMVECs and in myocardial microvascular endothelial (MyEnd) cells from wild-type mice, but not in MyEnd cells from VASP knockout mice. We demonstrate that PAF and VEGF cause hyperpermeability and stimulate the cAMP/Epac1 pathway to inactivate agonist-induced endothelial/microvascular hyperpermeability. Inactivation involves VASP-assisted translocation of eNOS from the cytosol to the endothelial cell membrane. We demonstrate that hyperpermeability is a self-limiting process, whose timed inactivation is an intrinsic property of the microvascular endothelium that maintains vascular homeostasis in response to inflammatory conditions.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.