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Balla H, Borsodi K, Őrsy P, Horváth B, Molnár PJ, Lénárt Á, Kosztelnik M, Ruisanchez É, Wess J, Offermanns S, Nyirády P, Benyó Z. Intracellular signaling pathways of muscarinic acetylcholine receptor-mediated detrusor muscle contractions. Am J Physiol Renal Physiol 2023; 325:F618-F628. [PMID: 37675459 DOI: 10.1152/ajprenal.00261.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 08/10/2023] [Accepted: 08/27/2023] [Indexed: 09/08/2023] Open
Abstract
Acetylcholine plays an essential role in the regulation of detrusor muscle contractions, and antimuscarinics are widely used in the management of overactive bladder syndrome. However, several adverse effects limit their application and patients' compliance. Thus, this study aimed to further analyze the signal transduction of M2 and M3 receptors in the murine urinary bladder to eventually find more specific therapeutic targets. Experiments were performed on adult male wild-type, M2, M3, M2/M3, or Gαq/11 knockout (KO), and pertussis toxin (PTX)-treated mice. Contraction force and RhoA activity were measured in the urinary bladder smooth muscle (UBSM). Our results indicate that carbamoylcholine (CCh)-induced contractions were associated with increased activity of RhoA and were reduced in the presence of the Rho-associated kinase (ROCK) inhibitor Y-27632 in UBSM. CCh-evoked contractile responses and RhoA activation were markedly reduced in detrusor strips lacking either M2 or M3 receptors and abolished in M2/M3 KO mice. Inhibition of Gαi-coupled signaling by PTX treatment shifted the concentration-response curve of CCh to the right and diminished RhoA activation. CCh-induced contractile responses were markedly decreased in Gαq/11 KO mice; however, RhoA activation was unaffected. In conclusion, cholinergic detrusor contraction and RhoA activation are mediated by both M2 and M3 receptors. Furthermore, whereas both Gαi and Gαq/11 proteins mediate UBSM contraction, the activation at the RhoA-ROCK pathway appears to be linked specifically to Gαi. These findings may aid the identification of more specific therapeutic targets for bladder dysfunctions.NEW & NOTEWORTHY Muscarinic acetylcholine receptors are of utmost importance in physiological regulation of micturition and also in the development of voiding disorders. We demonstrate that the RhoA-Rho-associated kinase (ROCK) pathway plays a crucial role in contractions induced by cholinergic stimulation in detrusor muscle. Activation of RhoA is mediated by both M2 and M3 receptors as well as by Gi but not Gq/11 proteins. The Gi-RhoA-ROCK pathway may provide a novel therapeutic target for overactive voiding disorders.
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Affiliation(s)
- Helga Balla
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Kinga Borsodi
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Petra Őrsy
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Béla Horváth
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Péter József Molnár
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
- Department of Urology, Semmelweis University, Budapest, Hungary
| | - Ádám Lénárt
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Mónika Kosztelnik
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
- HUN-REN-SE Cerebrosvascular and Neurodegenerative Disease Research Group, Budapest, Hungary
| | - Éva Ruisanchez
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
- HUN-REN-SE Cerebrosvascular and Neurodegenerative Disease Research Group, Budapest, Hungary
| | - Jürgen Wess
- Molecular Signaling Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland, United States
| | - Stefan Offermanns
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Péter Nyirády
- Department of Urology, Semmelweis University, Budapest, Hungary
| | - Zoltán Benyó
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
- HUN-REN-SE Cerebrosvascular and Neurodegenerative Disease Research Group, Budapest, Hungary
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Janovicz A, Majer A, Kosztelnik M, Geiszt M, Chun J, Ishii S, Tigyi GJ, Benyó Z, Ruisanchez É. Autotaxin-lysophosphatidic acid receptor 5 axis evokes endothelial dysfunction via reactive oxygen species signaling. Exp Biol Med (Maywood) 2023; 248:1887-1894. [PMID: 37837357 PMCID: PMC10792427 DOI: 10.1177/15353702231199081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 07/29/2023] [Indexed: 10/16/2023] Open
Abstract
Lysophosphatidylcholine (LPC) is a bioactive lipid that has been shown to attenuate endothelium-dependent vasorelaxation contributing to endothelial dysfunction; however, the underlying mechanisms are not well understood. In this study, we investigated the molecular mechanisms involved in the development of LPC-evoked impairment of endothelium-dependent vasorelaxation. In aortic rings isolated from wild-type (WT) mice, a 20-min exposure to LPC significantly reduced the acetylcholine chloride (ACh)-induced vasorelaxation indicating the impairment of normal endothelial function. Interestingly, pharmacological inhibition of autotaxin (ATX) by GLPG1690 partially reversed the endothelial dysfunction, suggesting that lysophosphatidic acid (LPA) derived from LPC may be involved in the effect. Therefore, the effect of LPC was also tested in aortic rings isolated from different LPA receptor knock-out (KO) mice. LPC evoked a marked reduction in ACh-dependent vasorelaxation in Lpar1, Lpar2, and Lpar4 KO, but its effect was significantly attenuated in Lpar5 KO vessels. Furthermore, addition of superoxide dismutase reduced the LPC-induced endothelial dysfunction in WT but not in the Lpar5 KO mice. In addition, LPC increased H2O2 release from WT vessels, which was significantly reduced in Lpar5 KO vessels. Our findings indicate that the ATX-LPA-LPA5 receptor axis is involved in the development of LPC-induced impairment of endothelium-dependent vasorelaxation via LPA5 receptor-mediated reactive oxygen species production. Taken together, in this study, we identified a new pathway contributing to the development of LPC-induced endothelial dysfunction.
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Affiliation(s)
- Anna Janovicz
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
- Eötvös Loránd Research Network and Semmelweis University (ELKH-SE) Cerebrovascular and Neurocognitive Disorders Research Group, H-1052 Budapest, Hungary
| | - Aliz Majer
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
| | - Mónika Kosztelnik
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
- Eötvös Loránd Research Network and Semmelweis University (ELKH-SE) Cerebrovascular and Neurocognitive Disorders Research Group, H-1052 Budapest, Hungary
| | - Miklós Geiszt
- Department of Physiology, Faculty of Medicine, Semmelweis University, H-1094 Budapest, Hungary
| | - Jerold Chun
- Translational Neuroscience at Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Satoshi Ishii
- Department of Immunology, Graduate School of Medicine, Akita University, Akita 010-8543, Japan
| | - Gábor József Tigyi
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
- Department of Physiology, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Zoltán Benyó
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
- Eötvös Loránd Research Network and Semmelweis University (ELKH-SE) Cerebrovascular and Neurocognitive Disorders Research Group, H-1052 Budapest, Hungary
| | - Éva Ruisanchez
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
- Eötvös Loránd Research Network and Semmelweis University (ELKH-SE) Cerebrovascular and Neurocognitive Disorders Research Group, H-1052 Budapest, Hungary
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Ruisanchez É, Janovicz A, Panta RC, Kiss L, Párkányi A, Straky Z, Korda D, Liliom K, Tigyi G, Benyó Z. Enhancement of Sphingomyelinase-Induced Endothelial Nitric Oxide Synthase-Mediated Vasorelaxation in a Murine Model of Type 2 Diabetes. Int J Mol Sci 2023; 24:ijms24098375. [PMID: 37176081 PMCID: PMC10179569 DOI: 10.3390/ijms24098375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/30/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023] Open
Abstract
Sphingolipids are important biological mediators both in health and disease. We investigated the vascular effects of enhanced sphingomyelinase (SMase) activity in a mouse model of type 2 diabetes mellitus (T2DM) to gain an understanding of the signaling pathways involved. Myography was used to measure changes in the tone of the thoracic aorta after administration of 0.2 U/mL neutral SMase in the presence or absence of the thromboxane prostanoid (TP) receptor antagonist SQ 29,548 and the nitric oxide synthase (NOS) inhibitor L-NAME. In precontracted aortic segments of non-diabetic mice, SMase induced transient contraction and subsequent weak relaxation, whereas vessels of diabetic (Leprdb/Leprdb, referred to as db/db) mice showed marked relaxation. In the presence of the TP receptor antagonist, SMase induced enhanced relaxation in both groups, which was 3-fold stronger in the vessels of db/db mice as compared to controls and could not be abolished by ceramidase or sphingosine-kinase inhibitors. Co-administration of the NOS inhibitor L-NAME abolished vasorelaxation in both groups. Our results indicate dual vasoactive effects of SMase: TP-mediated vasoconstriction and NO-mediated vasorelaxation. Surprisingly, in spite of the general endothelial dysfunction in T2DM, the endothelial NOS-mediated vasorelaxant effect of SMase was markedly enhanced.
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Affiliation(s)
- Éva Ruisanchez
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
- Eötvös Loránd Research Network and Semmelweis University (ELKH-SE) Cerebrovascular and Neurocognitive Disorders Research Group, H-1052 Budapest, Hungary
| | - Anna Janovicz
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
- Eötvös Loránd Research Network and Semmelweis University (ELKH-SE) Cerebrovascular and Neurocognitive Disorders Research Group, H-1052 Budapest, Hungary
| | - Rita Cecília Panta
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
| | - Levente Kiss
- Department of Physiology, Semmelweis University, H-1094 Budapest, Hungary
| | - Adrienn Párkányi
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
| | - Zsuzsa Straky
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
| | - Dávid Korda
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
| | - Károly Liliom
- Institute of Biophysics and Radiation Biology, Semmelweis University, H-1094 Budapest, Hungary
| | - Gábor Tigyi
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
- Department of Physiology, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Zoltán Benyó
- Institute of Translational Medicine, Semmelweis University, H-1094 Budapest, Hungary
- Eötvös Loránd Research Network and Semmelweis University (ELKH-SE) Cerebrovascular and Neurocognitive Disorders Research Group, H-1052 Budapest, Hungary
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Tarszabó R, Bányai B, Ruisanchez É, Péterffy B, Korsós-Novák Á, Lajtai K, Sziva RE, Gerszi D, Hosszú Á, Benkő R, Benyó Z, Horváth EM, Masszi G, Várbíró S. Influence of Vitamin D on the Vasoactive Effect of Estradiol in a Rat Model of Polycystic Ovary Syndrome. Int J Mol Sci 2021; 22:ijms22179404. [PMID: 34502321 PMCID: PMC8431242 DOI: 10.3390/ijms22179404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 08/23/2021] [Indexed: 11/16/2022] Open
Abstract
We examined the vasoactive effect of estradiol in a rat model of early PCOS and the influence of vitamin D deficiency (VDD). We created a model of chronic hyperandrogenism and VDD in adolescent female Wistar rats (N = 46) with four experimental groups: vitamin D supplemented (T-D+), VDD (T-D-), hyperandrogenic and vitamin D supplemented (T+D+), and hyperandrogenic and VDD (T+D-). T+ groups received an 8-week-long transdermal Androgel treatment, D-animals were on vitamin D-reduced diet and D+ rats were supplemented orally with vitamin D3. Estrogen-induced vasorelaxation of thoracic aorta segments were measured with a wire myograph system with or without the inhibition of endothelial nitric oxide synthase (eNOS) or cyclooxygenase-2 (COX-2). The distribution of estrogen receptor (ER), eNOS and COX-2 in the aortic wall was assessed by immunohistochemistry. VDD aortas showed significantly lower estradiol-induced relaxation independently of androgenic status that was further decreased by COX-2 inhibition. COX-2 inhibition failed to alter vessel function in D+ rats. Inhibition of eNOS abolished the estradiol-induced relaxation in all groups. Changes in vascular function in VDD were accompanied by significantly decreased ER and eNOS staining. Short-term chronic hyperandrogenism failed to, but VDD induced vascular dysfunction, compromised estrogen-dependent vasodilatation and changes in ER and eNOS immunostaining.
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Affiliation(s)
- Róbert Tarszabó
- Department of Obstetrics and Gynecology, Markusovszky Lajos University Teaching Hospital, Markusovszky Lajos Street 5, 9700 Szombathely, Hungary
- Correspondence:
| | - Bálint Bányai
- Department of Physiology, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (B.P.); (K.L.); (R.E.S.); (D.G.); (R.B.); (E.M.H.)
| | - Éva Ruisanchez
- Department of Translational Medicine, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (É.R.); (Z.B.)
| | - Borbála Péterffy
- Department of Physiology, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (B.P.); (K.L.); (R.E.S.); (D.G.); (R.B.); (E.M.H.)
| | - Ágnes Korsós-Novák
- Department of Pathology, Hetényi Géza Hospital, Tószegi Street 21, 5000 Szolnok, Hungary;
| | - Krisztina Lajtai
- Department of Physiology, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (B.P.); (K.L.); (R.E.S.); (D.G.); (R.B.); (E.M.H.)
- Department of Obstetrics and Gynecology, Semmelweis University, Üllői Street 78/a, 1082 Budapest, Hungary;
| | - Réka Eszter Sziva
- Department of Physiology, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (B.P.); (K.L.); (R.E.S.); (D.G.); (R.B.); (E.M.H.)
- Department of Obstetrics and Gynecology, Semmelweis University, Üllői Street 78/a, 1082 Budapest, Hungary;
| | - Dóra Gerszi
- Department of Physiology, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (B.P.); (K.L.); (R.E.S.); (D.G.); (R.B.); (E.M.H.)
- Department of Obstetrics and Gynecology, Semmelweis University, Üllői Street 78/a, 1082 Budapest, Hungary;
| | - Ádám Hosszú
- 1st Department of Pediatrics, Semmelweis University, 1082 Budapest, Hungary;
| | - Rita Benkő
- Department of Physiology, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (B.P.); (K.L.); (R.E.S.); (D.G.); (R.B.); (E.M.H.)
| | - Zoltán Benyó
- Department of Translational Medicine, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (É.R.); (Z.B.)
| | - Eszter Mária Horváth
- Department of Physiology, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (B.P.); (K.L.); (R.E.S.); (D.G.); (R.B.); (E.M.H.)
| | - Gabriella Masszi
- Department of Internal Medicine, National Institute of Psychiatry and Addictions, Lehel Street 59-61, 1135 Budapest, Hungary;
| | - Szabolcs Várbíró
- Department of Obstetrics and Gynecology, Semmelweis University, Üllői Street 78/a, 1082 Budapest, Hungary;
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Lajtai K, Tarszabó R, Bányai B, Péterffy B, Gerszi D, Ruisanchez É, Sziva RE, Korsós-Novák Á, Benkő R, Hadjadj L, Benyó Z, Horváth EM, Masszi G, Várbíró S. Effect of Vitamin D Status on Vascular Function of the Aorta in a Rat Model of PCOS. Oxid Med Cell Longev 2021; 2021:8865979. [PMID: 33791074 PMCID: PMC7997742 DOI: 10.1155/2021/8865979] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 02/15/2021] [Accepted: 03/06/2021] [Indexed: 01/23/2023]
Abstract
Polycystic ovary syndrome (PCOS) is associated with elevated cardiovascular risk. Early vascular dysfunction may lead to the development of cardiovascular disease in PCOS. Vitamin D deficiency (VDD) is a common comorbidity of PCOS that contributes to the pathogenesis of the disease and its complications. Both PCOS and VDD are accompanied by increased oxidative stress that may be involved in the arising vascular dysfunction. We aimed to investigate the role of vitamin D status on aortic function. PCOS was induced by an 8-week-long transdermal testosterone treatment of female rats, and low and adequate vitamin D status was achieved by dietary means. Contraction and relaxation abilities of isolated aortic segments were measured by myograph. Resorcin-fuchsin staining and immunohistochemical labeling of 3-nitrotyrosine were performed. No difference was shown in the norepinephrine-induced contraction of the aortas of different groups, whereas we detected reduced acetylcholine- and insulin-evoked relaxation in VDD groups. A lower level of resorcin-fuchsin staining and elevated 3-nitrotyrosine immunostaining was observed in VDD. In our study, we demonstrated early endothelial dysfunction in VDD PCOS rat model. Vitamin D supplementation could prevent vascular disturbances, while VDD itself damaged endothelium-dependent vasorelaxation and induced nitrative stress.
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Affiliation(s)
- K. Lajtai
- Department of Obstetrics and Gynecology, Semmelweis University, Hungary Budapest, Üllői út 78/a, H-1082
| | - R. Tarszabó
- Department of Obstetrics and Gynecology, Markusovszky Lajos University Teaching Hospital, Hungary Szombathely, Markusovszky Lajos utca 5., H-9700
| | - B. Bányai
- Department of Physiology, Hungary Budapest, Tűzoltó utca 37-47, H-1094
| | - B. Péterffy
- Department of Physiology, Hungary Budapest, Tűzoltó utca 37-47, H-1094
| | - D. Gerszi
- Department of Obstetrics and Gynecology, Semmelweis University, Hungary Budapest, Üllői út 78/a, H-1082
| | - É. Ruisanchez
- Department of Translational Medicine, Hungary Budapest, Tűzoltó utca 37-47, H-1094
| | - R. E. Sziva
- Department of Obstetrics and Gynecology, Semmelweis University, Hungary Budapest, Üllői út 78/a, H-1082
- Department of Physiology, Hungary Budapest, Tűzoltó utca 37-47, H-1094
| | - Á. Korsós-Novák
- Department of Pathology, Hetényi Géza Hospital, Hungary Szolnok, Tószegi út 21, H-5000
| | - R. Benkő
- Department of Physiology, Hungary Budapest, Tűzoltó utca 37-47, H-1094
| | - L. Hadjadj
- Department of Translational Medicine, Hungary Budapest, Tűzoltó utca 37-47, H-1094
| | - Z. Benyó
- Department of Translational Medicine, Hungary Budapest, Tűzoltó utca 37-47, H-1094
| | - E. M. Horváth
- Department of Physiology, Hungary Budapest, Tűzoltó utca 37-47, H-1094
| | - G. Masszi
- Department of Cardiology, Bajcsy-Zsilinszky Hospital, Hungary Budapest, Maglódi út 89-91, H-1106
| | - S. Várbíró
- Department of Obstetrics and Gynecology, Semmelweis University, Hungary Budapest, Üllői út 78/a, H-1082
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Molnár PJ, Dér B, Borsodi K, Balla H, Borbás Z, Molnár K, Ruisanchez É, Kenessey I, Horváth A, Keszthelyi A, Majoros A, Nyirády P, Offermanns S, Benyó Z. Isoprostanes evoke contraction of the murine and human detrusor muscle via activation of the thromboxane prostanoid TP receptor and Rho kinase. Am J Physiol Renal Physiol 2021; 320:F537-F547. [PMID: 33491563 DOI: 10.1152/ajprenal.00400.2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Local or systemic inflammation can severely impair urinary bladder functions and contribute to the development of voiding disorders in millions of people worldwide. Isoprostanes are inflammatory lipid mediators that are upregulated in the blood and urine by oxidative stress and may potentially induce detrusor overactivity. The aim of the present study was to investigate the effects and signal transduction of isoprostanes in human and murine urinary bladders in order to provide potential pharmacological targets in detrusor overactivity. Contraction force was measured with a myograph in murine and human urinary bladder smooth muscle (UBSM) ex vivo. Isoprostane 8-iso-PGE2 and 8-iso-PGF2α evoked dose-dependent contraction in the murine UBSM, which was abolished in mice deficient in the thromboxane prostanoid (TP) receptor. The responses remained unaltered after removal of the mucosa or incubation with tetrodotoxin. Smooth muscle-specific deletion of Gα12/13 protein or inhibition of Rho kinase by Y-27632 decreased the contractions. In Gαq/11-knockout mice, responses were reduced and in the presence of Y-27632 abolished completely. In human UBSM, the TP agonist U-46619 evoked dose-dependent contractions. Neither atropine nor the purinergic receptor antagonist pyridoxalphosphate-6-azophenyl-2',4'-disulfonic acid decreased the effect, indicating that TP receptors directly mediate detrusor muscle contraction. 8-iso-PGE2 and 8-iso-PGF2α evoked dose-dependent contraction in the human UBSM, and these responses were abolished by the TP antagonist SQ-29548 and were decreased by Y-27632. Our results indicate that isoprostanes evoke contraction in murine and human urinary bladders, an effect mediated by the TP receptor. The G12/13-Rho-Rho kinase pathway plays a significant role in mediating the contraction and therefore may be a potential therapeutic target in detrusor overactivity.NEW & NOTEWORTHY Voiding disorders affect millions of people worldwide. Inflammation can impair urinary bladder functions and contribute to the development of detrusor overactivity. The effects and signal transduction of inflammatory lipid mediator isoprostanes were studied in human and murine urinary bladders ex vivo. We found that isoprostanes evoke contraction, an effect mediated by thromboxane prostanoid receptors. The G12/13-Rho-Rho kinase signaling pathway plays a significant role in mediating the contraction and therefore may be a potential therapeutic target.
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Affiliation(s)
- Péter József Molnár
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary.,Department of Urology, Semmelweis University, Budapest, Hungary
| | - Bálint Dér
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Kinga Borsodi
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Helga Balla
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Zsófia Borbás
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Krisztina Molnár
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Éva Ruisanchez
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - István Kenessey
- 2nd Department of Pathology, Semmelweis University, Budapest, Hungary
| | - András Horváth
- Department of Urology, Semmelweis University, Budapest, Hungary
| | | | - Attila Majoros
- Department of Urology, Semmelweis University, Budapest, Hungary
| | - Péter Nyirády
- Department of Urology, Semmelweis University, Budapest, Hungary
| | - Stefan Offermanns
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Zoltán Benyó
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
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7
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Panta CR, Ruisanchez É, Móré D, Dancs PT, Balogh A, Fülöp Á, Kerék M, Proia RL, Offermanns S, Tigyi GJ, Benyó Z. Sphingosine-1-Phosphate Enhances α 1-Adrenergic Vasoconstriction via S1P2-G 12/13-ROCK Mediated Signaling. Int J Mol Sci 2019; 20:ijms20246361. [PMID: 31861195 PMCID: PMC6941080 DOI: 10.3390/ijms20246361] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 12/04/2019] [Accepted: 12/13/2019] [Indexed: 01/21/2023] Open
Abstract
Sphingosine-1-phosphate (S1P) has been implicated recently in the physiology and pathology of the cardiovascular system including regulation of vascular tone. Pilot experiments showed that the vasoconstrictor effect of S1P was enhanced markedly in the presence of phenylephrine (PE). Based on this observation, we hypothesized that S1P might modulate α1-adrenergic vasoactivity. In murine aortas, a 20-minute exposure to S1P but not to its vehicle increased the Emax and decreased the EC50 of PE-induced contractions indicating a hyperreactivity to α1-adrenergic stimulation. The potentiating effect of S1P disappeared in S1P2 but not in S1P3 receptor-deficient vessels. In addition, smooth muscle specific conditional deletion of G12/13 proteins or pharmacological inhibition of the Rho-associated protein kinase (ROCK) by Y-27632 or fasudil abolished the effect of S1P on α1-adrenergic vasoconstriction. Unexpectedly, PE-induced contractions remained enhanced markedly as late as three hours after S1P-exposure in wild-type (WT) and S1P3 KO but not in S1P2 KO vessels. In conclusion, the S1P–S1P2–G12/13–ROCK signaling pathway appears to have a major influence on α1-adrenergic vasoactivity. This cooperativity might lead to sustained vasoconstriction when increased sympathetic tone is accompanied by increased S1P production as it occurs during acute coronary syndrome and stroke.
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Affiliation(s)
- Cecília R. Panta
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary (D.M.); (P.T.D.); (A.B.); (M.K.); (G.J.T.)
- Correspondence: (C.R.P.); (Z.B.)
| | - Éva Ruisanchez
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary (D.M.); (P.T.D.); (A.B.); (M.K.); (G.J.T.)
| | - Dorottya Móré
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary (D.M.); (P.T.D.); (A.B.); (M.K.); (G.J.T.)
| | - Péter T. Dancs
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary (D.M.); (P.T.D.); (A.B.); (M.K.); (G.J.T.)
| | - Andrea Balogh
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary (D.M.); (P.T.D.); (A.B.); (M.K.); (G.J.T.)
| | - Ágnes Fülöp
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary (D.M.); (P.T.D.); (A.B.); (M.K.); (G.J.T.)
| | - Margit Kerék
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary (D.M.); (P.T.D.); (A.B.); (M.K.); (G.J.T.)
| | - Richard L. Proia
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), Bethesda, MD 20892, USA;
| | - Stefan Offermanns
- Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany;
| | - Gábor J. Tigyi
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary (D.M.); (P.T.D.); (A.B.); (M.K.); (G.J.T.)
- Department of Physiology, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Zoltán Benyó
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary (D.M.); (P.T.D.); (A.B.); (M.K.); (G.J.T.)
- Correspondence: (C.R.P.); (Z.B.)
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8
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Dank M, Balogh A, Benedek A, Besztercei B, Danics L, Forika G, Garay T, Hamar P, Karászi Á, Kaucsár T, Kiss É, Krenács T, Major E, Mohácsi R, Portörõ I, Ruisanchez É, Schvarcz C, Szász MA, Mbuotidem TJ, Vancsik T, Zolcsák Z, Benyó Z. [Preclinical and clinical investigation and development of electromagnetic oncological device - experience with solid tumors]. Magy Onkol 2019; 63:354-358. [PMID: 31821390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 11/28/2019] [Indexed: 06/10/2023]
Abstract
Our objective was to develop an electromagnetic tumor therapy device in a consortial cooperation between Semmelweis University and Oncotherm Ltd., to provide data and contribute to the development of the next generation of devices through preclinical, clinical and developmental modules via in vivo, in vitro studies, and patient treatments. Our numerous preclinical studies support the efficacy of mEHT. Clinical treatments were performed in 181 patients with inoperable and/or oligometastatic solid tumors. The protocols were developed, an international guideline was completed, and the planned steps of device development were realized. By optimizing previous selective RF techniques based on recent research findings, we can provide the most modern evidence-based treatment in the future.
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Affiliation(s)
- Magdolna Dank
- Onkológiai Központ, Semmelweis Egyetem, Budapest, Hungary
| | - Andrea Balogh
- Transzlációs Medicina Intézet, Semmelweis Egyetem, Budapest, Hungary.
| | - Anett Benedek
- Transzlációs Medicina Intézet, Semmelweis Egyetem, Budapest, Hungary.
| | - Balázs Besztercei
- Transzlációs Medicina Intézet, Semmelweis Egyetem, Budapest, Hungary.
| | - Lea Danics
- Transzlációs Medicina Intézet, Semmelweis Egyetem, Budapest, Hungary.
| | - Gertrud Forika
- I. Sz. Patológiai és Kísérleti Rákkutató Intézet, Semmelweis Egyetem, Budapest, Hungary
| | - Tamás Garay
- Információs Technológiai és Bionikai Kar, Pázmány Péter Katolikus Egyetem, Budapest, Hungary
| | - Péter Hamar
- Transzlációs Medicina Intézet, Semmelweis Egyetem, Budapest, Hungary.
| | - Ádám Karászi
- Onkológiai Központ, Semmelweis Egyetem, Budapest, Hungary
| | - Tamás Kaucsár
- Transzlációs Medicina Intézet, Semmelweis Egyetem, Budapest, Hungary.
| | - Éva Kiss
- Onkológiai Központ, Semmelweis Egyetem, Budapest, Hungary
| | - Tibor Krenács
- I. Sz. Patológiai és Kísérleti Rákkutató Intézet, Semmelweis Egyetem, Budapest, Hungary
| | - Enikõ Major
- Transzlációs Medicina Intézet, Semmelweis Egyetem, Budapest, Hungary.
| | - Réka Mohácsi
- Onkológiai Központ, Semmelweis Egyetem, Budapest, Hungary
| | - István Portörõ
- Transzlációs Medicina Intézet, Semmelweis Egyetem, Budapest, Hungary.
| | - Éva Ruisanchez
- Transzlációs Medicina Intézet, Semmelweis Egyetem, Budapest, Hungary.
| | - Csaba Schvarcz
- Transzlációs Medicina Intézet, Semmelweis Egyetem, Budapest, Hungary.
| | | | | | - Tamás Vancsik
- I. Sz. Patológiai és Kísérleti Rákkutató Intézet, Semmelweis Egyetem, Budapest, Hungary
| | - Zita Zolcsák
- Onkoradiológiai Osztály, Uzsoki Utcai Kórház, Budapest, Hungary
| | - Zoltán Benyó
- Transzlációs Medicina Intézet, Semmelweis Egyetem, Budapest, Hungary.
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9
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Dér B, Molnár PJ, Ruisanchez É, Őrsy P, Kerék M, Faragó B, Nyirády P, Offermanns S, Benyó Z. NK2 receptor-mediated detrusor muscle contraction involves G q/11-dependent activation of voltage-dependent Ca 2+ channels and the RhoA-Rho kinase pathway. Am J Physiol Renal Physiol 2019; 317:F1154-F1163. [PMID: 31461351 DOI: 10.1152/ajprenal.00106.2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Tachykinins (TKs) are involved in both the physiological regulation of urinary bladder functions and development of overactive bladder syndrome. The aim of the present study was to investigate the signal transduction pathways of TKs in the detrusor muscle to provide potential pharmacological targets for the treatment of bladder dysfunctions related to enhanced TK production. Contraction force, intracellular Ca2+ concentration, and RhoA activity were measured in the mouse urinary bladder smooth muscle (UBSM). TKs and the NK2 receptor (NK2R)-specific agonist [β-Ala8]-NKA(4-10) evoked contraction, which was inhibited by the NKR2 antagonist MEN10376. In Gαq/11-deficient mice, [β-Ala8]-NKA(4-10)-induced contraction and the intracellular Ca2+ concentration increase were abolished. Although Gq/11 proteins are linked principally to phospholipase Cβ and inositol trisphosphate-mediated Ca2+ release from intracellular stores, we found that phospholipase Cβ inhibition and sarcoplasmic reticulum Ca2+ depletion failed to have any effect on contraction induced by [β-Ala8]-NKA(4-10). In contrast, lack of extracellular Ca2+ or blockade of voltage-dependent Ca2+ channels (VDCCs) suppressed contraction. Furthermore, [β-Ala8]-NKA(4-10) increased RhoA activity in the UBSM in a Gq/11-dependent manner and inhibition of Rho kinase with Y-27632 decreased contraction force, whereas the combination of Y-27632 with either VDCC blockade or depletion of extracellular Ca2+ resulted in complete inhibition of [β-Ala8]-NKA(4-10)-induced contractions. In summary, our results indicate that NK2Rs are linked exclusively to Gq/11 proteins in the UBSM and that the intracellular signaling involves the simultaneous activation of VDCC and the RhoA-Rho kinase pathway. These findings may help to identify potential therapeutic targets of bladder dysfunctions related to upregulation of TKs.
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Affiliation(s)
- Bálint Dér
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Péter József Molnár
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary.,Department of Urology, Semmelweis University, Budapest, Hungary
| | - Éva Ruisanchez
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Petra Őrsy
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Margit Kerék
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Bernadett Faragó
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Péter Nyirády
- Department of Urology, Semmelweis University, Budapest, Hungary
| | - Stefan Offermanns
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Zoltán Benyó
- Institute of Translational Medicine, Semmelweis University, Budapest, Hungary
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10
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Kerkovits NM, Janovicz A, Ruisanchez É, Őrfi E, Gál P, Szénási G, Benyó Z. Anaphylatoxin C3a induces vasoconstriction and hypertension mediated by thromboxane A
2
in mice. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.lb510] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Anna Janovicz
- Institute of Clinical Experimental ResearchSemmelweis UniversityBudapestHungary
| | - Éva Ruisanchez
- Institute of Clinical Experimental ResearchSemmelweis UniversityBudapestHungary
| | - Erik Őrfi
- Department of PathophysiologySemmelweis UniversityBudapestHungary
| | - Péter Gál
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of SciencesBudapestHungary
| | - Gábor Szénási
- Department of PathophysiologySemmelweis UniversityBudapestHungary
| | - Zoltán Benyó
- Institute of Clinical Experimental ResearchSemmelweis UniversityBudapestHungary
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11
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Dancs PT, Ruisanchez É, Balogh A, Panta CR, Miklós Z, Nüsing RM, Aoki J, Chun J, Offermanns S, Tigyi G, Benyó Z. LPA 1 receptor-mediated thromboxane A 2 release is responsible for lysophosphatidic acid-induced vascular smooth muscle contraction. FASEB J 2017; 31:1547-1555. [PMID: 28069828 DOI: 10.1096/fj.201600735r] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 12/19/2016] [Indexed: 02/05/2023]
Abstract
Lysophosphatidic acid (LPA) has been recognized recently as an endothelium-dependent vasodilator, but several lines of evidence indicate that it may also stimulate vascular smooth muscle cells (VSMCs), thereby contributing to vasoregulation and remodeling. In the present study, mRNA expression of all 6 LPA receptor genes was detected in murine aortic VSMCs, with the highest levels of LPA1, LPA2, LPA4, and LPA6 In endothelium-denuded thoracic aorta (TA) and abdominal aorta (AA) segments, 1-oleoyl-LPA and the LPA1-3 agonist VPC31143 induced dose-dependent vasoconstriction. VPC31143-induced AA contraction was sensitive to pertussis toxin (PTX), the LPA1&3 antagonist Ki16425, and genetic deletion of LPA1 but not that of LPA2 or inhibition of LPA3, by diacylglycerol pyrophosphate. Surprisingly, vasoconstriction was also diminished in vessels lacking cyclooxygenase-1 [COX1 knockout (KO)] or the thromboxane prostanoid (TP) receptor (TP KO). VPC31143 increased thromboxane A2 (TXA2) release from TA of wild-type, TP-KO, and LPA2-KO mice but not from LPA1-KO or COX1-KO mice, and PTX blocked this effect. Our findings indicate that LPA causes vasoconstriction in VSMCs, mediated by LPA1-, Gi-, and COX1-dependent autocrine/paracrine TXA2 release and consequent TP activation. We propose that this new-found interaction between the LPA/LPA1 and TXA2/TP pathways plays significant roles in vasoregulation, hemostasis, thrombosis, and vascular remodeling.-Dancs, P. T., Ruisanchez, E., Balogh, A., Panta, C. R., Miklós, Z., Nüsing, R. M., Aoki, J., Chun, J., Offermanns, S., Tigyi, G., Benyó, Z. LPA1 receptor-mediated thromboxane A2 release is responsible for lysophosphatidic acid-induced vascular smooth muscle contraction.
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Affiliation(s)
- Péter Tibor Dancs
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Éva Ruisanchez
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Andrea Balogh
- Department of Physiology, University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Cecília Rita Panta
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Zsuzsanna Miklós
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Rolf M Nüsing
- Institute of Clinical Pharmacology, Goethe University, Frankfurt, Germany
| | - Junken Aoki
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Jerold Chun
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA; and
| | - Stefan Offermanns
- Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Gábor Tigyi
- Department of Physiology, University of Tennessee Health Science Center, Memphis, Tennessee, USA;
| | - Zoltán Benyó
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary;
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12
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Polycarpou A, Hricisák L, Iring A, Safar D, Ruisanchez É, Horváth B, Sándor P, Benyó Z. Adaptation of the cerebrocortical circulation to carotid artery occlusion involves blood flow redistribution between cortical regions and is independent of eNOS. Am J Physiol Heart Circ Physiol 2016; 311:H972-H980. [PMID: 27496877 DOI: 10.1152/ajpheart.00197.2016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 08/01/2016] [Indexed: 01/02/2023]
Abstract
Cerebral circulation is secured by feed-forward and feed-back control pathways to maintain and eventually reestablish the optimal oxygen and nutrient supply of neurons in case of disturbances of the cardiovascular system. Using the high temporal and spatial resolution of laser-speckle imaging we aimed to analyze the pattern of cerebrocortical blood flow (CoBF) changes after unilateral (left) carotid artery occlusion (CAO) in anesthetized mice to evaluate the contribution of macrovascular (circle of Willis) vs. pial collateral vessels as well as that of endothelial nitric oxide synthase (eNOS) to the cerebrovascular adaptation to CAO. In wild-type mice CoBF reduction in the left temporal cortex started immediately after CAO, reaching its maximum (-26%) at 5-10 s. Thereafter, CoBF recovered close to the preocclusion level within 30 s indicating the activation of feed-back pathway(s). Interestingly, the frontoparietal cerebrocortical regions also showed CoBF reduction in the left (-17-19%) but not in the right hemisphere, although these brain areas receive their blood supply from the common azygos anterior cerebral artery in mice. In eNOS-deficient animals the acute CoBF reduction after CAO was unaltered, and the recovery was even accelerated compared with controls. These results indicate that 1) the Willis circle alone is not sufficient to provide an immediate compensation for the loss of one carotid artery, 2) pial collaterals attenuate the ischemia of the temporal cortex ipsilateral to CAO at the expense of the blood supply of the frontoparietal region, and 3) eNOS, surprisingly, does not play an important role in this CoBF redistribution.
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Affiliation(s)
- Andreas Polycarpou
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary; and
| | - László Hricisák
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary; and
| | - András Iring
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary; and Max Planck Institute for Heart and Lung Research, Department of Pharmacology, Bad Nauheim, Germany
| | - Daniel Safar
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary; and
| | - Éva Ruisanchez
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary; and
| | - Béla Horváth
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary; and
| | - Péter Sándor
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary; and
| | - Zoltán Benyó
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary; and
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13
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Benyó Z, Ruisanchez É, Leszl-Ishiguro M, Sándor P, Pacher P. Endocannabinoids in cerebrovascular regulation. Am J Physiol Heart Circ Physiol 2016; 310:H785-801. [PMID: 26825517 DOI: 10.1152/ajpheart.00571.2015] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 01/25/2016] [Indexed: 02/08/2023]
Abstract
The cerebral blood flow is tightly regulated by myogenic, endothelial, metabolic, and neural mechanisms under physiological conditions, and a large body of recent evidence indicates that inflammatory pathways have a major influence on the cerebral blood perfusion in certain central nervous system disorders, like hemorrhagic and ischemic stroke, traumatic brain injury, and vascular dementia. All major cell types involved in cerebrovascular control pathways (i.e., smooth muscle, endothelium, neurons, astrocytes, pericytes, microglia, and leukocytes) are capable of synthesizing endocannabinoids and/or express some or several of their target proteins [i.e., the cannabinoid 1 and 2 (CB1 and CB2) receptors and the transient receptor potential vanilloid type 1 ion channel]. Therefore, the endocannabinoid system may importantly modulate the regulation of cerebral circulation under physiological and pathophysiological conditions in a very complex manner. Experimental data accumulated since the late 1990s indicate that the direct effect of cannabinoids on cerebral vessels is vasodilation mediated, at least in part, by CB1 receptors. Cannabinoid-induced cerebrovascular relaxation involves both a direct inhibition of smooth muscle contractility and a release of vasodilator mediator(s) from the endothelium. However, under stress conditions (e.g., in conscious restrained animals or during hypoxia and hypercapnia), cannabinoid receptor activation was shown to induce a reduction of the cerebral blood flow, probably via inhibition of the electrical and/or metabolic activity of neurons. Finally, in certain cerebrovascular pathologies (e.g., subarachnoid hemorrhage, as well as traumatic and ischemic brain injury), activation of CB2 (and probably yet unidentified non-CB1/non-CB2) receptors appear to improve the blood perfusion of the brain via attenuating vascular inflammation.
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Affiliation(s)
- Zoltán Benyó
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary; and
| | - Éva Ruisanchez
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary; and
| | - Miriam Leszl-Ishiguro
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary; and
| | - Péter Sándor
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary; and
| | - Pál Pacher
- Laboratory of Cardiovascular Physiology and Tissue Injury, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland
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14
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Szekeres M, Nádasy GL, Turu G, Soltész-Katona E, Benyó Z, Offermanns S, Ruisanchez É, Szabó E, Takáts Z, Bátkai S, Tóth ZE, Hunyady L. Endocannabinoid-mediated modulation of Gq/11 protein-coupled receptor signaling-induced vasoconstriction and hypertension. Mol Cell Endocrinol 2015; 403:46-56. [PMID: 25595485 DOI: 10.1016/j.mce.2015.01.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 12/19/2014] [Accepted: 01/08/2015] [Indexed: 12/31/2022]
Abstract
Activation of G protein-coupled receptors (GPCRs) can induce vasoconstriction via calcium signal-mediated and Rho-dependent pathways. Earlier reports have shown that diacylglycerol produced during calcium signal generation can be converted to an endocannabinoid, 2-arachidonoylglycerol (2-AG). Our aim was to provide evidence that GPCR signaling-induced 2-AG production and activation of vascular type1 cannabinoid receptors (CB1R) is capable of reducing agonist-induced vasoconstriction and hypertension. Rat and mouse aortic rings were examined by myography. Vascular expression of CB1R was demonstrated with immunohistochemistry. Rat aortic vascular smooth muscle cells (VSMCs) were cultured for calcium measurements and 2-AG-determination. Inhibition or genetic loss of CB1Rs enhanced vasoconstriction induced by angiotensin II (AngII) or phenylephrine (Phe), but not by prostaglandin(PG)F2α. AngII-induced vasoconstriction was augmented by inhibition of diacylglycerol lipase (tetrahydrolipstatin) and was attenuated by inhibition of monoacylglycerol lipase (JZL184) suggesting a functionally relevant role for endogenously produced 2-AG. In Gαq/11-deficient mice vasoconstriction was absent to AngII or Phe, which activate Gq/11-coupled receptors, but was maintained in response to PGF2α. In VSMCs, AngII-stimulated 2-AG-formation was inhibited by tetrahydrolipstatin and potentiated by JZL184. CB1R inhibition increased the sustained phase of AngII-induced calcium signal. Pharmacological or genetic loss of CB1R function augmented AngII-induced blood pressure rise in mice. These data demonstrate that vasoconstrictor effect of GPCR agonists is attenuated via Gq/11-mediated vascular endocannabinoid formation. Agonist-induced endocannabinoid-mediated CB1R activation is a significant physiological modulator of vascular tone. Thus, the selective modulation of GPCR signaling-induced endocannabinoid release has a therapeutic potential in case of increased vascular tone and hypertension.
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MESH Headings
- Angiotensin II/pharmacology
- Animals
- Aorta/drug effects
- Arachidonic Acids/pharmacology
- Benzodioxoles/pharmacology
- Calcium/metabolism
- Calcium Signaling
- Dinoprost/pharmacology
- Endocannabinoids/pharmacology
- GTP-Binding Protein alpha Subunits, Gq-G11/deficiency
- GTP-Binding Protein alpha Subunits, Gq-G11/genetics
- Gene Expression Regulation
- Glycerides/pharmacology
- Hypertension/drug therapy
- Hypertension/genetics
- Hypertension/metabolism
- Hypertension/physiopathology
- Lactones/pharmacology
- Lipoprotein Lipase/antagonists & inhibitors
- Lipoprotein Lipase/genetics
- Lipoprotein Lipase/metabolism
- Male
- Mice
- Mice, Knockout
- Monoacylglycerol Lipases/antagonists & inhibitors
- Monoacylglycerol Lipases/genetics
- Monoacylglycerol Lipases/metabolism
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Myocytes, Smooth Muscle/cytology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Orlistat
- Phenylephrine/pharmacology
- Piperidines/pharmacology
- Rats
- Rats, Wistar
- Receptor, Cannabinoid, CB1/antagonists & inhibitors
- Receptor, Cannabinoid, CB1/genetics
- Receptor, Cannabinoid, CB1/metabolism
- Tissue Culture Techniques
- Vasoconstriction/drug effects
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Affiliation(s)
- Mária Szekeres
- Department of Physiology, Semmelweis University, Budapest, Hungary
| | - György L Nádasy
- Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Gábor Turu
- Department of Physiology, Semmelweis University, Budapest, Hungary
| | | | - Zoltán Benyó
- Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Stefan Offermanns
- Department of Pharmacology, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Éva Ruisanchez
- Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Eszter Szabó
- 1st Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Zoltán Takáts
- 1st Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Sándor Bátkai
- Institute of Molecular and Translational Therapeutic Strategies, Hannover Medical School, Hannover, Germany
| | - Zsuzsanna E Tóth
- Department of Anatomy, Histology and Embryology, Semmelweis University, Budapest, Hungary
| | - László Hunyady
- Department of Physiology, Semmelweis University, Budapest, Hungary; MTA-SE Laboratory of Molecular Physiology, Budapest, Hungary.
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15
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Ruisanchez É, Dancs P, Kerék M, Németh T, Faragó B, Balogh A, Patil R, Jennings BL, Liliom K, Malik KU, Smrcka AV, Tigyi G, Benyó Z. Lysophosphatidic acid induces vasodilation mediated by LPA1 receptors, phospholipase C, and endothelial nitric oxide synthase. FASEB J 2013; 28:880-90. [PMID: 24249637 DOI: 10.1096/fj.13-234997] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Lysophosphatidic acid (LPA) has been implicated as a mediator of several cardiovascular functions, but its potential involvement in the control of vascular tone is obscure. Here, we show that both LPA (18:1) and VPC31143 (a synthetic agonist of LPA1-3 receptors) relax intact mouse thoracic aorta with similar Emax values (53.9 and 51.9% of phenylephrine-induced precontraction), although the EC50 of LPA- and VPC31143-induced vasorelaxations were different (400 vs. 15 nM, respectively). Mechanical removal of the endothelium or genetic deletion of endothelial nitric oxide synthase (eNOS) not only diminished vasorelaxation by LPA or VPC31143 but converted it to vasoconstriction. Freshly isolated mouse aortic endothelial cells expressed LPA1, LPA2, LPA4 and LPA5 transcripts. The LPA1,3 antagonist Ki16425, the LPA1 antagonist AM095, and the genetic deletion of LPA1, but not that of LPA2, abolished LPA-induced vasorelaxation. Inhibition of the phosphoinositide 3 kinase-protein kinase B/Akt pathway by wortmannin or MK-2206 failed to influence the effect of LPA. However, pharmacological inhibition of phospholipase C (PLC) by U73122 or edelfosine, but not genetic deletion of PLCε, abolished LPA-induced vasorelaxation and indicated that a PLC enzyme, other than PLCε, mediates the response. In summary, the present study identifies LPA as an endothelium-dependent vasodilator substance acting via LPA1, PLC, and eNOS.
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Affiliation(s)
- Éva Ruisanchez
- 1Z.B., Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, POB 448, H-1446 Budapest, Hungary.
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Iring A, Ruisanchez É, Leszl-Ishiguro M, Horváth B, Benkő R, Lacza Z, Járai Z, Sándor P, Di Marzo V, Pacher P, Benyó Z. Role of endocannabinoids and cannabinoid-1 receptors in cerebrocortical blood flow regulation. PLoS One 2013; 8:e53390. [PMID: 23308211 PMCID: PMC3537620 DOI: 10.1371/journal.pone.0053390] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Accepted: 11/27/2012] [Indexed: 12/21/2022] Open
Abstract
Background Endocannabinoids are among the most intensively studied lipid mediators of cardiovascular functions. In the present study the effects of decreased and increased activity of the endocannabinoid system (achieved by cannabinoid-1 (CB1) receptor blockade and inhibition of cannabinoid reuptake, respectively) on the systemic and cerebral circulation were analyzed under steady-state physiological conditions and during hypoxia and hypercapnia (H/H). Methodology/Principal Findings In anesthetized spontaneously ventilating rats the CB1-receptor antagonist/inverse agonist AM-251 (10 mg/kg, i.v.) failed to influence blood pressure (BP), cerebrocortical blood flow (CoBF, measured by laser-Doppler flowmetry) or arterial blood gas levels. In contrast, the putative cannabinoid reuptake inhibitor AM-404 (10 mg/kg, i.v.) induced triphasic responses, some of which could be blocked by AM-251. Hypertension during phase I was resistant to AM-251, whereas the concomitant CoBF-increase was attenuated. In contrast, hypotension during phase III was sensitive to AM-251, whereas the concomitant CoBF-decrease was not. Therefore, CoBF autoregulation appeared to shift towards higher BP levels after CB1-blockade. During phase II H/H developed due to respiratory depression, which could be inhibited by AM-251. Interestingly, however, the concomitant rise in CoBF remained unchanged after AM-251, indicating that CB1-blockade potentially enhanced the reactivity of the CoBF to H/H. In accordance with this hypothesis, AM-251 induced a significant enhancement of the CoBF responses during controlled stepwise H/H. Conclusion/Significance Under resting physiological conditions CB1-receptor mediated mechanisms appear to have limited influence on systemic or cerebral circulation. Enhancement of endocannabinoid levels, however, induces transient CB1-independent hypertension and sustained CB1-mediated hypotension. Furthermore, enhanced endocannabinoid activity results in respiratory depression in a CB1-dependent manner. Finally, our data indicate for the first time the involvement of the endocannabinoid system and CB1-receptors in the regulation of the cerebral circulation during H/H and also raise the possibility of their contribution to the autoregulation of CoBF.
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Affiliation(s)
- András Iring
- Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Éva Ruisanchez
- Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Miriam Leszl-Ishiguro
- Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Béla Horváth
- Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, Budapest, Hungary
- Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Rita Benkő
- Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Zsombor Lacza
- Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Zoltán Járai
- Department of Cardiology, St. Imre Teaching Hospital, Budapest, Hungary
| | - Péter Sándor
- Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Vincenzo Di Marzo
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, Consiglio Nazionale delle Ricerche, Naples, Italy
| | - Pál Pacher
- National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Zoltán Benyó
- Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, Budapest, Hungary
- * E-mail:
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Ruisanchez É, Cselenyák A, Papp RS, Németh T, Káldi K, Sándor P, Benyó Z. Perivascular expression and potent vasoconstrictor effect of dynorphin A in cerebral arteries. PLoS One 2012; 7:e37798. [PMID: 22662226 PMCID: PMC3360594 DOI: 10.1371/journal.pone.0037798] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Accepted: 04/27/2012] [Indexed: 12/30/2022] Open
Abstract
Background Numerous literary data indicate that dynorphin A (DYN-A) has a significant impact on cerebral circulation, especially under pathophysiological conditions, but its potential direct influence on the tone of cerebral vessels is obscure. The aim of the present study was threefold: 1) to clarify if DYN-A is present in cerebral vessels, 2) to determine if it exerts any direct effect on cerebrovascular tone, and if so, 3) to analyze the role of κ-opiate receptors in mediating the effect. Methodology/Principal Findings Immunohistochemical analysis revealed the expression of DYN-A in perivascular nerves of rat pial arteries as well as in both rat and human intraparenchymal vessels of the cerebral cortex. In isolated rat basilar and middle cerebral arteries (BAs and MCAs) DYN-A (1–13) and DYN-A (1–17) but not DYN-A (1–8) or dynorphin B (DYN-B) induced strong vasoconstriction in micromolar concentrations. The maximal effects, compared to a reference contraction induced by 124 mM K+, were 115±6% and 104±10% in BAs and 113±3% and 125±9% in MCAs for 10 µM of DYN-A (1–13) and DYN-A (1–17), respectively. The vasoconstrictor effects of DYN-A (1–13) could be inhibited but not abolished by both the κ-opiate receptor antagonist nor-Binaltorphimine dihydrochloride (NORBI) and blockade of Gi/o-protein mediated signaling by pertussis toxin. Finally, des-Tyr1 DYN-A (2–13), which reportedly fails to activate κ-opiate receptors, induced vasoconstriction of 45±11% in BAs and 50±5% in MCAs at 10 µM, which effects were resistant to NORBI. Conclusion/Significance DYN-A is present in rat and human cerebral perivascular nerves and induces sustained contraction of rat cerebral arteries. This vasoconstrictor effect is only partly mediated by κ-opiate receptors and heterotrimeric Gi/o-proteins. To our knowledge our present findings are the first to indicate that DYN-A has a direct cerebral vasoconstrictor effect and that a dynorphin-induced vascular action may be, at least in part, independent of κ-opiate receptors.
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Affiliation(s)
- Éva Ruisanchez
- Institute of Human Physiology and Clinical Experimental Research, Semmelweis University, Budapest, Hungary.
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