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Bai J, Li Y, Yan G, Zhou J, Salmeron AG, Fategbe OT, Kumar S, Chen X, Chen DB. ICI 182,780 Attenuates Selective Upregulation of Uterine Artery Cystathionine β-Synthase Expression in Rat Pregnancy. Int J Mol Sci 2023; 24:14384. [PMID: 37762687 PMCID: PMC10532247 DOI: 10.3390/ijms241814384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/16/2023] [Accepted: 09/17/2023] [Indexed: 09/29/2023] Open
Abstract
Endogenous hydrogen sulfide (H2S) produced by cystathionine β-synthase (CBS) and cystathionine-γ lyase (CSE) has emerged as a novel uterine vasodilator contributing to pregnancy-associated increases in uterine blood flow, which safeguard pregnancy health. Uterine artery (UA) H2S production is stimulated via exogenous estrogen replacement and is associated with elevated endogenous estrogens during pregnancy through the selective upregulation of CBS without altering CSE. However, how endogenous estrogens regulate uterine artery CBS expression in pregnancy is unknown. This study was conducted to test a hypothesis that endogenous estrogens selectively stimulate UA CBS expression via specific estrogen receptors (ER). Treatment with E2β (0.01 to 100 nM) stimulated CBS but not CSE mRNA in organ cultures of fresh UA rings from both NP and P (gestational day 20, GD20) rats, with greater responses to all doses of E2β tested in P vs. NP UA. ER antagonist ICI 182,780 (ICI, 1 µM) completely attenuated E2β-stimulated CBS mRNA in both NP and P rat UA. Subcutaneous injection with ICI 182,780 (0.3 mg/rat) of GD19 P rats for 24 h significantly inhibited UA CBS but not mRNA expression, consistent with reduced endothelial and smooth muscle cell CBS (but not CSE) protein. ICI did not alter mesenteric and renal artery CBS and CSE mRNA. In addition, ICI decreased endothelial nitric oxide synthase mRNA in UA but not in mesenteric or renal arteries. Thus, pregnancy-augmented UA CBS/H2S production is mediated by the actions of endogenous estrogens via specific ER in pregnant rats.
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Affiliation(s)
- Jin Bai
- Department of Obstetrics and Gynecology, University of California Irvine, Irvine, CA 92697, USA; (J.B.); (A.G.S.); (O.T.F.)
| | - Yao Li
- Department of Laboratory Animal Sciences, School of Medicine, Shanghai Jiaotong University, 280 South Chongqing Road, Shanghai 200025, China; (Y.L.); (G.Y.); (J.Z.); (X.C.)
| | - Guofeng Yan
- Department of Laboratory Animal Sciences, School of Medicine, Shanghai Jiaotong University, 280 South Chongqing Road, Shanghai 200025, China; (Y.L.); (G.Y.); (J.Z.); (X.C.)
| | - Jing Zhou
- Department of Laboratory Animal Sciences, School of Medicine, Shanghai Jiaotong University, 280 South Chongqing Road, Shanghai 200025, China; (Y.L.); (G.Y.); (J.Z.); (X.C.)
| | - Alejandra Garcia Salmeron
- Department of Obstetrics and Gynecology, University of California Irvine, Irvine, CA 92697, USA; (J.B.); (A.G.S.); (O.T.F.)
| | - Olamide Tolulope Fategbe
- Department of Obstetrics and Gynecology, University of California Irvine, Irvine, CA 92697, USA; (J.B.); (A.G.S.); (O.T.F.)
| | - Sathish Kumar
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI 53706, USA;
| | - Xuejin Chen
- Department of Laboratory Animal Sciences, School of Medicine, Shanghai Jiaotong University, 280 South Chongqing Road, Shanghai 200025, China; (Y.L.); (G.Y.); (J.Z.); (X.C.)
| | - Dong-Bao Chen
- Department of Obstetrics and Gynecology, University of California Irvine, Irvine, CA 92697, USA; (J.B.); (A.G.S.); (O.T.F.)
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PDE-Mediated Cyclic Nucleotide Compartmentation in Vascular Smooth Muscle Cells: From Basic to a Clinical Perspective. J Cardiovasc Dev Dis 2021; 9:jcdd9010004. [PMID: 35050214 PMCID: PMC8777754 DOI: 10.3390/jcdd9010004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/18/2021] [Accepted: 12/20/2021] [Indexed: 12/14/2022] Open
Abstract
Cardiovascular diseases are important causes of mortality and morbidity worldwide. Vascular smooth muscle cells (SMCs) are major components of blood vessels and are involved in physiologic and pathophysiologic conditions. In healthy vessels, vascular SMCs contribute to vasotone and regulate blood flow by cyclic nucleotide intracellular pathways. However, vascular SMCs lose their contractile phenotype under pathological conditions and alter contractility or signalling mechanisms, including cyclic nucleotide compartmentation. In the present review, we focus on compartmentalized signaling of cyclic nucleotides in vascular smooth muscle. A deeper understanding of these mechanisms clarifies the most relevant axes for the regulation of vascular tone. Furthermore, this allows the detection of possible changes associated with pathological processes, which may be of help for the discovery of novel drugs.
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Justo AFO, de Oliveira MG, Calmasini FB, Alexandre EC, Bertollotto GM, Jacintho FF, Antunes E, Mónica FZ. Preserved activity of soluble guanylate cyclase (sGC) in iliac artery from middle-aged rats: Role of sGC modulators. Nitric Oxide 2021; 106:9-16. [PMID: 33122152 DOI: 10.1016/j.niox.2020.10.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/08/2020] [Accepted: 10/20/2020] [Indexed: 12/28/2022]
Abstract
Vascular aging leads to structural and functional changes. Iliac arteries (IA) provide blood flow to lower urinary tract and pelvic ischemia has been reported as an important factor for bladder remodeling and overactivity. Dysfunction of the nitric oxide (NO)-cyclic guanosine monophosphate pathway (cGMP) is one factor involved in the development of lower urinary tract (LUT) disorders. Therefore, we hypothesized that ageing-associated LUT disorders is a consequence of lower cGMP productions due to an oxidation of soluble guanylate cylase (sGC) that results in local ischemia. In the present study IA from middle-aged and young rats were isolated and the levels of NO, reactive oxygen species (ROS), the gene expression of the enzymes involved in the NO-pathway and concentration-response curves to the soluble guanylate (sGC) stimulator (BAY 41-2272), sGC activator (BAY 58-2667), tadalafil, acetylcholine (ACh) and sodium nitroprusside (SNP) were determined. In IA from middle-aged rats the gene expression for endothelial nitric oxide synthase and the ROS were lower and higher, respectively than the young group. The relaxations induced by ACh and SNP were significantly lower in IA from middle-aged rats. In IA from middle-aged rats the mRNA expression of PDE5 was 55% higher, accompanied by lower relaxation induced by tadalafil. On the other hand, the gene expression for sGCα1 were similar in IA from both groups. Both BAY 41-2272 and BAY 58-2667 produced concentration-dependent relaxations in IA from both groups, however, the latter was 9-times more potent than BAY 41-2272 and produced similar relaxations in IA in both middle-aged and young groups. Yet, the sGC oxidant, ODQ increased the relaxation and the cGMP levels induced by BAY 58-2667. On the other hand, in tissues stimulated with SNP, tadalafil and BAY-2272, the intracellular levels of cGMP were lower in IA from middle-aged than young rats. In conclusion, our results clearly showed that the relaxations induced by the endothelium-dependent and -independent agents, by the PDE5 inhibitor and by sGC stimulator were impaired in IA from aged rats, while that induced by sGC activator was preserved. It suggests that sGC activator may be advantageous in treating ischemia-related functional changes in the lower urinary tract organs in situations where the NO levels are reduced.
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Affiliation(s)
- Alberto Fernando O Justo
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Brazil
| | - Mariana G de Oliveira
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Brazil
| | - Fabiano B Calmasini
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Brazil
| | - Eduardo C Alexandre
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Brazil
| | | | | | - Edson Antunes
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Brazil
| | - Fabíola Z Mónica
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Brazil.
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Rengarajan A, Mauro AK, Boeldt DS. Maternal disease and gasotransmitters. Nitric Oxide 2020; 96:1-12. [PMID: 31911124 DOI: 10.1016/j.niox.2020.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 12/20/2019] [Accepted: 01/02/2020] [Indexed: 02/06/2023]
Abstract
The three known gasotransmitters, nitric oxide, carbon monoxide, and hydrogen sulfide are involved in key processes throughout pregnancy. Gasotransmitters are known to impact on smooth muscle tone, regulation of immune responses, and oxidative state of cells and their component molecules. Failure of the systems that tightly regulate gasotransmitter production and downstream effects are thought to contribute to common maternal diseases such as preeclampsia and preterm birth. Normal pregnancy-related changes in uterine blood flow depend heavily on gasotransmitter signaling. In preeclampsia, endothelial dysfunction is a major contributor to aberrant gasotransmitter signaling, resulting in hypertension after 20 weeks gestation. Maintenance of pregnancy to term also requires gasotransmitter-mediated uterine quiescence. As the appropriate signals for parturition occur, regulation of gasotransmitter signaling must work in concert with those endocrine signals in order for appropriate labor and delivery timing. Like preeclampsia, preterm birth may have origins in abnormal gasotransmitter signaling. We review the evidence for the involvement of gasotransmitters in preeclampsia and preterm birth, as well as mechanistic and molecular signaling targets.
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Affiliation(s)
- Aishwarya Rengarajan
- Perinatal Research Laboratories, Dept Ob/ Gyn, UW - Madison, Madison, WI, 53715, USA
| | - Amanda K Mauro
- Perinatal Research Laboratories, Dept Ob/ Gyn, UW - Madison, Madison, WI, 53715, USA
| | - Derek S Boeldt
- Perinatal Research Laboratories, Dept Ob/ Gyn, UW - Madison, Madison, WI, 53715, USA.
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Larré AB, Sontag F, Pasin DM, Paludo N, do Amaral RR, da Costa BEP, Poli-de-Figueiredo CE. Phosphodiesterase Inhibition in the Treatment of Preeclampsia: What Is New? Curr Hypertens Rep 2018; 20:83. [PMID: 30051151 DOI: 10.1007/s11906-018-0883-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE OF REVIEW The present study intends to review the possibility of using phosphodiesterase inhibitors as a treatment option for preeclampsia, addressing potential risks and benefits. RECENT FINDINGS Preeclampsia is the most common hypertensive disorder of pregnancy, often responsible for severe maternal and fetal complications, which can lead to early pregnancy termination and death. Despite the numerous studies, its pathophysiology is still unclear, although it seems to involve a multiplicity of complex factors related to angiogenesis, ineffective vasodilation, oxidative stress, inflammatory cytokines, and endothelial dysfunction. It has been hypothetically suggested that the use of phosphodiesterase inhibitors is capable of improving placental and fetal perfusion, contributing to gestational scenario, by decreasing the symptomatology and severity of this syndrome. In this literature review, it has been found that most of the studies were conducted in animal models, and there is still lack of evidence supporting its use in clinical practice. Research in human indicates conflicting findings; randomized controlled trials were scarce and did not demonstrate any benefit in morbidity or mortality. Data regarding to pathophysiological and interventional research are described and commented in this review. The use of phosphodiesterase inhibitors in the treatment of preeclampsia is controversial and should not be encouraged taking into account recent data.
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Affiliation(s)
- Anne Brandolt Larré
- Postgraduate Program in Medicine and Health Sciences (Nephrology), Laboratory of Nephrology-School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Fernando Sontag
- Postgraduate Program in Medicine and Health Sciences (Nephrology), Laboratory of Nephrology-School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Débora Montenegro Pasin
- Postgraduate Program in Medicine and Health Sciences (Nephrology), Laboratory of Nephrology-School of Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Nathália Paludo
- Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | - Bartira Ercília Pinheiro da Costa
- Department of Internal Medicine, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil. .,São Lucas Hospital, Av Ipiranga 6690, Porto Alegre, 90 610 000, Brazil.
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