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Schubert R, Gaynullina D, Shvetsova A, Tarasova OS. Myography of isolated blood vessels: Considerations for experimental design and combination with supplementary techniques. Front Physiol 2023; 14:1176748. [PMID: 37168231 PMCID: PMC10165122 DOI: 10.3389/fphys.2023.1176748] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 04/11/2023] [Indexed: 05/13/2023] Open
Abstract
The study of the mechanisms of regulation of vascular tone is an urgent task of modern science, since diseases of the cardiovascular system remain the main cause of reduction in the quality of life and mortality of the population. Myography (isometric and isobaric) of isolated blood vessels is one of the most physiologically relevant approaches to study the function of cells in the vessel wall. On the one hand, cell-cell interactions as well as mechanical stretch of the vessel wall remain preserved in myography studies, in contrast to studies on isolated cells, e.g., cell culture. On the other hand, in vitro studies in isolated vessels allow control of numerous parameters that are difficult to control in vivo. The aim of this review was to 1) discuss the specifics of experimental design and interpretation of data obtained by myography and 2) highlight the importance of the combined use of myography with various complementary techniques necessary for a deep understanding of vascular physiology.
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Affiliation(s)
- Rudolf Schubert
- Physiology, Institute of Theoretical Medicine, Faculty of Medicine, University of Augsburg, Augsburg, Germany
- *Correspondence: Rudolf Schubert,
| | - Dina Gaynullina
- Faculty of Biology, M.V. Lomonosov Moscow State University, Moscow, Russia
| | | | - Olga S. Tarasova
- Faculty of Biology, M.V. Lomonosov Moscow State University, Moscow, Russia
- State Research Center of the Russian Federation, Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia
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Thongin S, Den-Udom T, Uppakara K, Sriwantana T, Sibmooh N, Laolob T, Boonthip C, Wichai U, Muta K, Ketsawatsomkron P. Beneficial effects of capsaicin and dihydrocapsaicin on endothelial inflammation, nitric oxide production and antioxidant activity. Biomed Pharmacother 2022; 154:113521. [PMID: 36007275 DOI: 10.1016/j.biopha.2022.113521] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 08/01/2022] [Accepted: 08/08/2022] [Indexed: 11/20/2022] Open
Abstract
Capsaicin and dihydrocapsaicin (DHC) are major pungent capsaicinoids produced in chili peppers. Capsaicin has been previously shown to promote vascular health by increasing nitric oxide (NO) production and reducing inflammatory responses. While capsaicin has been extensively studied, whether DHC exerts cardiovascular benefits through similar mechanisms remains unclear. The current study aimed to investigate the direct effects of DHC on endothelial inflammation, NO release, and free radical scavenging properties. DHC at concentrations up to 50 µM did not affect cell viability, while concentrations of 100 and 500 µM of DHC led to endothelial cytotoxicity. Capsaicin decreased cell viability at concentration of 500 µM. To investigate the effects of capsaicinoids on endothelial activation, we first demonstrated that TNFα induced Ser536 phosphorylation of p65 NFκB, expressions of adhesion molecules, vascular cell adhesion molecule (VCAM)-1 and intercellular adhesion molecule (ICAM)-1, and IL-6 production in primary human endothelial cells. These effects were robustly abrogated by DHC. Consistently, DHC treatment led to a marked reduction in TNFα-mediated monocyte adhesion to endothelial cells. Additionally, NO production was significantly induced by DHC and capsaicin compared to vehicle control. Similar to capsaicin and vitamin C, DHC scavenged DPPH (1,1-diphenyl-2-picrylhydrazyl) free radicals in vitro. Our present study highlights the benefits of DHC and capsaicin treatment on human endothelial cells and provides evidence to support cardiovascular benefits from capsicum consumption.
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Affiliation(s)
- Saowarose Thongin
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Thailand
| | - Thittaya Den-Udom
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Thailand
| | - Kwanchanok Uppakara
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Thailand
| | - Thanaporn Sriwantana
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Thailand
| | - Nathawut Sibmooh
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Thailand
| | - Thanet Laolob
- Department of Chemistry and Center of Excellence in Biomaterials, Faculty of Science, Naresuan University, Thailand
| | - Chatchai Boonthip
- Department of Chemistry and Center of Excellence in Biomaterials, Faculty of Science, Naresuan University, Thailand
| | - Uthai Wichai
- Department of Chemistry and Center of Excellence in Biomaterials, Faculty of Science, Naresuan University, Thailand
| | - Kenjiro Muta
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Thailand
| | - Pimonrat Ketsawatsomkron
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Thailand.
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Arslan H, Köseoğlu S, Doğanay Yildiz E, Arabaci T, Savran L, Yildiz DA, Veyisoğlu G. Effect of intracanal diode laser application and low-level laser therapy on CGRP change. Braz Oral Res 2019; 32:e125. [PMID: 30892373 DOI: 10.1590/1807-3107bor-2018.vol32.0125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 11/05/2018] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to investigate the effect of a placebo, intracanal diode laser application, and low-level laser therapy (LLLT) on the change of the total amount of calcitonin gene-related peptide (CGRP) in the gingival crevicular fluid (GCF) (split-mouth study design). GCF sampling was performed on a contralateral tooth and experimental tooth (root canal-treated tooth) of thirty-nine patients. The patients were divided into three groups (n = 13), as follows: placebo (mock laser application), intracanal laser application, and LLLT. GCF sampling was repeated at the same sites (experimental and control teeth) one week after root canal treatment. The data were analyzed using the Pearson's correlation analysis and the independent-samples t-tests (p=0.05). In the placebo group, the total CGRP level changes in the GCF before and after treatment was significantly higher for experimental teeth than for control teeth (p<0.05). However, there was no significant difference between experimental and control teeth in the intracanal laser application and LLLT groups (p > 0.05). Intracanal laser application and low-level laser therapy have immunomodulation effects linked to the modulation of the total amount of CGRP in the GCF.
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Affiliation(s)
- Hakan Arslan
- Atatürk University, Faculty of Dentistry, Department of Endodontics, Erzurum, Turkey
| | - Serhat Köseoğlu
- Sağlık Bilimleri University, Faculty of Dentistry,Department of Periodontology, Istanbul, Turkey
| | - Ezgi Doğanay Yildiz
- Kırıkkale University, Faculty of Dentistry, Department of Endodontics, Kırıkkale, Turkey
| | - Taner Arabaci
- Atatürk University, Faculty of Dentistry, Department of Periodontology, Erzurum, Turkey
| | - Levent Savran
- Izmir Katip Celebi University, Faculty of Dentistry, Department of Periodontology, Izmir, Turkey
| | - Dursun Anıl Yildiz
- Atatürk University, Faculty of Dentistry, Department of Periodontology, Erzurum, Turkey
| | - Gözde Veyisoğlu
- Başkent University, Faculty of Dentistry, Department of Periodontology, Ankara, Turkey
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Abstract
Neurogenic inflammation, a well-defined pathophysiologial process is characterized by the release of potent vasoactive neuropeptides, predominantly calcitonin gene-related peptide (CGRP), substance P (SP), and neurokinin A from activated peripheral nociceptive sensory nerve terminals (usually C and A delta-fibers). These peptides lead to a cascade of inflammatory tissue responses including arteriolar vasodilation, plasma protein extravasation, and degranulation of mast cells in their peripheral target tissue. Neurogenic inflammatory processes have long been implicated as a possible mechanism involved in the pathophysiology of various human diseases of the nervous system, respiratory system, gastrointestinal tract, urogenital tract, and skin. The recent development of several innovative experimental migraine models has provided evidence suggestive of the involvement of neuropeptides (SP, neurokinin A, and CGRP) in migraine headache. Antidromic stimulation of nociceptive fibers of the trigeminal nerve resulted in a neurogenic inflammatory response with marked increase in plasma protein extravasation from dural blood vessels by the release of various sensory neuropeptides. Several clinically effective abortive antimigraine medications, such as ergots and triptans, have been shown to attenuate the release of neuropeptide and neurogenic plasma protein extravasation. These findings provide support for the validity of using animal models to investigate mechanisms of neurogenic inflammation in migraine. These also further strengthen the notion of migraine being a neuroinflammatory disease. In the clinical context, there is a paucity of knowledge and awareness among physicians regarding the role of neurogenic inflammation in migraine. Improved understanding of the molecular biology, pharmacology, and pathophysiology of neurogenic inflammation may provide the practitioner the context-specific feedback to identify the novel and most effective therapeutic approach to treatment. With this objective, the present review summarizes the evidence supporting the involvement of neurogenic inflammation and neuropeptides in the pathophysiology and pharmacology of migraine headache as well as its potential significance in better tailoring therapeutic interventions in migraine or other neurological disorders. In addition, we have briefly highlighted the pathophysiological role of neurogenic inflammation in various other neurological disorders.
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Affiliation(s)
- Rakesh Malhotra
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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Identification and analysis of an impurity inducing clinical adverse effect in anti-adhesion carboxymethyl chitosan products. J Pharm Biomed Anal 2013; 85:21-7. [DOI: 10.1016/j.jpba.2013.06.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 06/18/2013] [Accepted: 06/19/2013] [Indexed: 11/17/2022]
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Gupta S, Villalón CM. The relevance of preclinical research models for the development of antimigraine drugs: focus on 5-HT(1B/1D) and CGRP receptors. Pharmacol Ther 2010; 128:170-90. [PMID: 20655327 DOI: 10.1016/j.pharmthera.2010.06.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2010] [Accepted: 06/25/2010] [Indexed: 01/08/2023]
Abstract
Migraine is a complex neurovascular syndrome, causing a unilateral pulsating headache with accompanying symptoms. The past four decades have contributed immensely to our present understanding of migraine pathophysiology and have led to the introduction of specific antimigraine therapies, much to the relief of migraineurs. Pathophysiological factors culminating into migraine headaches have not yet been completely deciphered and, thus, pose an additional challenge for preclinical research in the absence of any direct experimental marker. Migraine provocation experiments in humans use a head-score to evaluate migraine, as articulated by the volunteer, which cannot be applied to laboratory animals. Therefore, basic research focuses on different symptoms and putative mechanisms, one at a time or in combination, to validate the hypotheses. Studies in several species, utilizing different preclinical approaches, have significantly contributed to the two antimigraine principles in therapeutics, namely: 5-HT(1B/1D) receptor agonists (known as triptans) and CGRP receptor antagonists (known as gepants). This review will analyze the preclinical experimental models currently known for the development of these therapeutic principles, which are mainly based on the vascular and/or neurogenic theories of migraine pathogenesis. These include models based on the involvement of cranial vasodilatation and/or the trigeminovascular system in migraine. Clearly, the preclinical strategies should involve both approaches, while incorporating the newer ideas/techniques in order to get better insights into migraine pathophysiology.
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Affiliation(s)
- Saurabh Gupta
- Dept. of Neurology, Glostrup Research Institute, Glostrup Hospital, Faculty of Health Science, University of Copenhagen, Ndr. Ringvej 69, DK-2600 Glostrup, Copenhagen, Denmark.
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Grant S, Lutz EM, McPhaden AR, Wadsworth RM. Location and function of VPAC1, VPAC2 and NPR-C receptors in VIP-induced vasodilation of porcine basilar arteries. J Cereb Blood Flow Metab 2006; 26:58-67. [PMID: 15959462 DOI: 10.1038/sj.jcbfm.9600163] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Vasoactive intestinal peptide (VIP) is a vasodilator peptide present in cerebrovascular nerves. Vasoactive intestinal peptide can activate VPAC1, VPAC2 and the NPR-C receptor. This study sought to determine the receptors involved in VIP-induced vasodilation of porcine basilar arteries. Porcine basilar arteries contained the messenger ribonucleic acid of all three receptors. Immunocytochemical analysis of porcine basilar arteries revealed that the VPAC1 receptor is expressed on the endothelium, VPAC2 on the outer layers of the media and the NPR-C receptor throughout the artery, including nerves. Vasodilator responses to all receptor agonists showed that the receptors are functional. The vasodilator response to the VPAC1 receptor agonist was inhibited by L-NAME and abolished by endothelial denudation. Vasodilation induced by Ro-25-1553, the VPAC2 agonist, was unaffected by NOS inhibition or removal of the endothelium. Activation of the NPR-C receptor produced a vasodilation, which was susceptible to NOS inhibition and independent of endothelium. The vasodilator response to electrical stimulation at 20 Hz was attenuated by PG-99-465, the VPAC2 antagonist. This study shows that all known VIP receptors are involved in VIP-mediated vasodilation of porcine basilar arteries. The VPAC1 receptor is located on the endothelium and elicits vasodilation by generating nitric oxide (NO). The VPAC2 receptor is mainly expressed in the outer layers of the smooth muscle and induces vasodilation independently of NO in response to VIP released from intramural nerves. The NPR-C receptor produces NO-dependent vasodilation independently of the endothelium by stimulation of nNOS in intramural nerves.
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MESH Headings
- Animals
- Basilar Artery/drug effects
- Basilar Artery/physiology
- Immunohistochemistry
- Receptors, Atrial Natriuretic Factor/drug effects
- Receptors, Atrial Natriuretic Factor/physiology
- Receptors, Vasoactive Intestinal Peptide, Type II/biosynthesis
- Receptors, Vasoactive Intestinal Peptide, Type II/drug effects
- Receptors, Vasoactive Intestinal Peptide, Type II/physiology
- Receptors, Vasoactive Intestinal Polypeptide, Type I/biosynthesis
- Receptors, Vasoactive Intestinal Polypeptide, Type I/drug effects
- Receptors, Vasoactive Intestinal Polypeptide, Type I/physiology
- Reverse Transcriptase Polymerase Chain Reaction
- Swine
- Vasoactive Intestinal Peptide/pharmacology
- Vasodilation/drug effects
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Affiliation(s)
- Stuart Grant
- Department of Physiology and Pharmacology, University of Strathclyde, Glasgow, Scotland, UK
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Salem N, Dunbar JC. The insulin-mediated vascular and blood pressure responses are suppressed in CGRP-deficient normal and diabetic rats. Diabetes Metab Res Rev 2002; 18:238-44. [PMID: 12112942 DOI: 10.1002/dmrr.293] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Calcitonin gene-related peptide (CGRP) is extensively localized in the perivascular or periadventitia nerves throughout the body. CGRP is a potent vasodilator and its release is associated with dilation of these blood vessels. The present study investigated the contribution of the CGRP-mediated vasodilation to the insulin-induced vasodilatory response. METHODS Male Wistar rats were treated with capsaicin (50 mg/kg) at 1-3 days of age to ablate the CGRP-containing neurons. After 8 weeks some animals were made diabetic using streptozotocin. Vehicle-treated animals were used as controls. At 12-13 weeks the animals were fasted, anesthetized with chloralose/urethane and instrumented for recording of cardiovascular dynamics. RESULTS Body weights and basal, insulin, glucose, mean arterial pressure (MAP), heart rate (HR), and vascular flows were not different in CGRP-deficient rats versus controls. Insulin infusion significantly decreased the MAP in vehicle-treated controls but this response was completely attenuated in CGRP-deficient rats. The decreased response to insulin was associated with a diminished vascular dilatory response in the iliac, renal, and superior mesenteric vessel beds. When insulin was infused in CGRP-deficient diabetic animals there was also a diminished response. Diabetes resulted in an increased renal vascular flow in response to insulin. CONCLUSIONS From the present studies we conclude that the insulin-mediated vasodilation was due, in part, to the stimulation of perivascular nerves to release CGRP, and the action of CGRP on vascular smooth muscle enhanced directly or indirectly the vasodilatory response to insulin.
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Affiliation(s)
- Nahla Salem
- Department of Physiology, Wayne State University School of Medicine, 540 E Canfield, Detroit, MI 48201-1928, USA
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Rainero I, Pinessi L, Salani G, Valfrè W, Rivoiro C, Savi L, Gentile S, Giudice RL, Grimaldi LME. A polymorphism in the interleukin-1alpha gene influences the clinical features of migraine. Headache 2002; 42:337-40. [PMID: 12047332 DOI: 10.1046/j.1526-4610.2002.02103.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate whether a particular genotype of the interleukin-1alpha (IL1A) gene affects the clinical features of migraine. BACKGROUND Proinflammatory mediators have been reported to play a role in the pathophysiology of migraine. Recent studies suggest that polymorphisms in the interleukin-1 genes influence the age at onset and subsequent course of several chronic inflammatory diseases. METHODS In a group of 269 patients with migraine, we tested the association of the -889 C/T biallelic polymorphism of the IL1A gene with several clinical features of the disease. RESULTS Patients with migraine carrying the T/T genotype show an age at onset of the disease that is significantly (P <.01) lower than IL1A C/C or C/T carriers. In addition, the same genotype was significantly (P <.05) more frequent in patients with migraine with aura than in patients with migraine without aura. CONCLUSIONS The results of our study suggest a role for the IL1A gene in modifying the clinical features of migraine.
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Affiliation(s)
- Innocenzo Rainero
- Neurology III, Headache Center, Department of Neuroscience, University of Torino, Italy
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