Arginine Vasopressin Signaling
Arginine Vasopressin Signaling - Related Videos
08:44
Continuous IV Infusion is the Choice Treatment Route for Arginine-vasopressin Receptor Blocker Conivaptan in Mice to Study Stroke-evoked Brain Edema
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Cited by 4 •
2016
Our studies have revealed that the beneficial effects of conivaptan are dependent on the method of delivery after experimental stroke in mice. We have developed a research protocol for delivery of the receptor blocker via IV catheter on stroke-evoked brain edema formation in mice.
07:02
Exploring the Arginine Methylome by Nuclear Magnetic Resonance Spectroscopy
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Cited by 10 •
2021
The present protocol describes the preparation and quantitative measurement of free and protein-bound arginine and methyl-arginines by 1H-NMR spectroscopy.
12:02
An Efficient Method for the Synthesis of Peptoids with Mixed Lysine-type/Arginine-type Monomers and Evaluation of Their Anti-leishmanial Activity
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Cited by 8 •
2016
A protocol to synthesize peptoids with mixed cationic functionality in the same sequence is presented (lysine- and arginine-type monomers). Subsequent testing of these compounds against Leishmania mexicana, the protozoan parasites that cause cutaneous leishmaniasis, is also described.
10:01
In vitro Methylation Assay to Study Protein Arginine Methylation
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Cited by 8 •
2014
Protein arginine methylation, catalyzed by a class of enzymes viz., protein arginine methyl transferases (PRMTs), is the process of enzymatic addition of methyl group(s) to arginines within proteins. The in vitro methylation assay is the most dependable tool for assessing the methylation status of known or novel PRMT substrates.
07:48
Preparing a 68Ga-labeled Arginine Glycine Aspartate (RGD)-peptide for Angiogenesis
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Cited by 3 •
2019
The αvβ3 integrin is a type of adhesion protein that is highly expressed on activated endothelial cells undergoing angiogenesis. Thus, evaluating the integrity of the integrin is of great interest in oncology. Here, we introduce a method to prepare 68Ga-labeled radiopeptides and a method to assess its biological effectiveness.
FAQs
The receptor class determines the main intracellular response. V1a and V1b signaling is associated with phospholipase C activation and calcium signaling, whereas V2 signaling increases cyclic AMP and protein kinase A activity. This division allows arginine vasopressin to influence processes such as vascular tone through one pathway and renal water conservation through another.
Aquaporin-2 insertion provides a direct cellular mechanism for increasing water conservation in the kidney. After V2 receptor stimulation, cyclic AMP and protein kinase A activity promote movement of aquaporin-2 into collecting-duct membranes. The membrane location of this water-channel protein therefore connects intracellular signaling to the physiological control of fluid balance.
Receptor subtype determines which intracellular machinery is engaged and, consequently, which tissue response is emphasized. V1a and V1b receptors are grouped with phospholipase C and calcium signaling, while V2 receptors are linked to cyclic AMP, protein kinase A, and aquaporin-2 trafficking. This organization explains how one hormone can coordinate different biological functions.
Studies can examine changes in water balance, blood pressure, vascular tone, renal function, and neuroendocrine regulation. These outcomes reflect the different receptor-linked pathways rather than a single generalized response. Comparing them helps investigators connect cellular signaling events with organism-level changes in fluid conservation and cardiovascular or endocrine function.
A useful comparison is to examine V2-linked responses separately from V1-linked responses. Renal analysis can focus on cyclic AMP, protein kinase A activity, and aquaporin-2 insertion in collecting-duct membranes, while vascular analysis can consider phospholipase C and calcium signaling. This framework relates receptor pathway activation to distinct physiological outcomes.
The pathway is relevant because disrupted signaling can affect the mechanisms that conserve water and adjust vascular tone. Investigators can use its receptor pathways and downstream responses to study impaired fluid homeostasis, renal dysfunction, hypertension, and related endocrine regulation. Linking these conditions to signaling events provides a biological context for interpreting abnormal physiological outcomes.