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Issotina Zibrila A, Zhou J, Wang X, Zeng M, Ali MA, Liu X, Alkuhali AA, Zeng Z, Meng Y, Wang Z, Li X, Liu J. Placental ischemia-upregulated angiotensin II type 1 receptor in hypothalamic paraventricular nucleus contributes to hypertension in rat. Pflugers Arch 2024:10.1007/s00424-024-03010-2. [PMID: 39215834 DOI: 10.1007/s00424-024-03010-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/30/2024] [Accepted: 08/12/2024] [Indexed: 09/04/2024]
Abstract
Preeclampsia (PE) is associated with increased angiotensin II sensitivity and poor neurological outcomes marked by temporal loss of neural control of blood pressure. Yet the role of centrally expressed angiotensin II type 1 receptor (AT1R) within the paraventricular nucleus of the hypothalamus (PVN) in the PE model is not understood. In a PE rat model with reduced placental perfusion pressure (RUPP) induced on gestational day 14 (GD14), the PVN expression and cellular localization of AT1R were assessed using immunofluorescence and western blotting. The sensitivity of RUPP to acute angiotensin II infusion was assessed. AT1R was antagonized by losartan (100 µg/kg/day) for 5 days intracerebroventricularly (ICV). Hemodynamic data and samples were collected on GD19 for further analysis. RUPP upregulated (p < 0.05) mRNA and protein of AT1R within the PVN and lowered (p < 0.05) circulating angiotensin II in rats. RUPP increased neural and microglial activation. Cellular localization assessment revealed that AT1R was primarily expressed in neurons and slightly in microglia and astrocytes. Infusion of 100 ng/kg as bolus increased the mean arterial pressure (MAP in mmHg) in both RUPP and Sham. ICV losartan infusion attenuated RUPP-increased MAP (113.6 ± 6.22 in RUPP vs. 92.16 ± 5.30 in RUPP + Los, p = 0.021) and the expression of nuclear transcription factor NF-κB, tyrosine hydroxylase (TH), NADPH oxidase 4 (NOX4) and reactive oxygen species (ROS) in the PVN. Our data suggest that centrally expressed AT1R, within the PVN, contributes to placental ischemia-induced hypertension in RUPP rats highlighting its therapeutic potential in PE.
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Affiliation(s)
- Abdoulaye Issotina Zibrila
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases, No. 76 Yanta West Road, Xi'an, 710061, Shaanxi, P. R. China
| | - Jun Zhou
- Department of Pharmacology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases, Xi'an, 710061, Shaanxi, P. R. China
| | - Xiaomin Wang
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases, No. 76 Yanta West Road, Xi'an, 710061, Shaanxi, P. R. China
| | - Ming Zeng
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases, No. 76 Yanta West Road, Xi'an, 710061, Shaanxi, P. R. China
| | - Md Ahasan Ali
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases, No. 76 Yanta West Road, Xi'an, 710061, Shaanxi, P. R. China
| | - Xiaoxu Liu
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases, No. 76 Yanta West Road, Xi'an, 710061, Shaanxi, P. R. China
| | - Asma A Alkuhali
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases, No. 76 Yanta West Road, Xi'an, 710061, Shaanxi, P. R. China
| | - Zhaoshu Zeng
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases, No. 76 Yanta West Road, Xi'an, 710061, Shaanxi, P. R. China
| | - Yuan Meng
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases, No. 76 Yanta West Road, Xi'an, 710061, Shaanxi, P. R. China
| | - Zheng Wang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, P. R. China
| | - Xuelan Li
- Department of Obstetrics & Gynecology, First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, Xi'an, 710061, Shaanxi, P. R. China.
| | - Jinjun Liu
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases, No. 76 Yanta West Road, Xi'an, 710061, Shaanxi, P. R. China.
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Sun B, Smith N, Dixon AJ, Osei-Owusu P. Phosphodiesterases Mediate the Augmentation of Myogenic Constriction by Inhibitory G Protein Signaling and is Negatively Modulated by the Dual Action of RGS2 and 5. FUNCTION 2024; 5:zqae003. [PMID: 38486977 PMCID: PMC10935470 DOI: 10.1093/function/zqae003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/09/2024] [Accepted: 01/16/2024] [Indexed: 03/17/2024] Open
Abstract
G protein regulation by regulators of G protein signaling (RGS) proteins play a key role in vascular tone maintenance. The loss of Gi/o and Gq/11 regulation by RGS2 and RGS5 in non-pregnant mice is implicated in augmented vascular tone and decreased uterine blood flow (UBF). RGS2 and 5 are closely related and co-expressed in uterine arteries (UA). However, whether and how RGS2 and 5 coordinate their regulatory activities to finetune G protein signaling and regulate vascular tone are unclear. Here, we determined how the integrated activity of RGS2 and 5 modulates vascular tone to promote UBF. Using ultrasonography and pressure myography, we examined uterine hemodynamics and myogenic tone (MT) of UA of wild type (WT), Rgs2-/-, Rgs5-/-, and Rgs2/5 dbKO mice. We found that MT was reduced in Rgs5-/- relative to WT or Rgs2-/- UA. Activating Gi/o with dopamine increased, whereas exogenous cAMP decreased MT in Rgs5-/- UA to levels in WT UA. Dual deletion of Rgs2 and 5 abolished the reduced MT due to the absence of Rgs5 and enhanced dopamine-induced Gi/o effects in Rgs2/5 dbKO UA. Conversely, and as in WT UA, Gi/o inhibition with pertussis toxin or exogenous cAMP decreased MT in Rgs2/5 dbKO to levels in Rgs5-/- UA. Inhibition of phosphodiesterases (PDE) concentration-dependently decreased and normalized MT in all genotypes, and blocked dopamine-induced MT augmentation in Rgs2-/-, Rgs5-/-, and Rgs2/5 dbKO UA. We conclude that Gi/o augments UA MT in the absence of RGS2 by a novel mechanism involving PDE-mediated inhibition of cAMP-dependent vasodilatation..
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Affiliation(s)
- Bo Sun
- Department of Physiology and Biophysics, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Nia Smith
- Department of Physiology and Biophysics, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Alethia J Dixon
- Department of Physiology and Biophysics, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Patrick Osei-Owusu
- Department of Physiology and Biophysics, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
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Psilopatis I, Vrettou K, Fleckenstein FN, Theocharis S. The Role of Peroxisome Proliferator-Activated Receptors in Preeclampsia. Cells 2023; 12:cells12040647. [PMID: 36831316 PMCID: PMC9954398 DOI: 10.3390/cells12040647] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/07/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
Preeclampsia is a common pregnancy-related hypertensive disorder. Often presenting as preexisting or new-onset hypertension complicated by proteinuria and/or end-organ dysfunction, preeclampsia significantly correlates with maternal and perinatal morbidity and mortality. Peroxisome proliferator-activated receptors (PPARs) are nuclear receptor proteins that regulate gene expression. In order to investigate the role of PPARs in the pathophysiology of preeclampsia, we conducted a literature review using the MEDLINE and LIVIVO databases. The search terms "peroxisome proliferator-activated receptor", "PPAR", and "preeclampsia" were employed and we were able to identify 35 relevant studies published between 2002 and 2022. Different study groups reached contradictory conclusions in terms of PPAR expression in preeclamptic placentae. Interestingly, PPARγ agonists alone, or in combination with well-established pharmaceutical agents, were determined to represent novel, potent anti-preeclamptic treatment alternatives. In conclusion, PPARs seem to play a significant role in preeclampsia.
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Affiliation(s)
- Iason Psilopatis
- Department of Diagnostic and Interventional Radiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt—Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Bld 10, Goudi, 11527 Athens, Greece
| | - Kleio Vrettou
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Bld 10, Goudi, 11527 Athens, Greece
| | - Florian Nima Fleckenstein
- Department of Diagnostic and Interventional Radiology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt—Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
- BIH Charité Clinician Scientist Program, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, 10117 Berlin, Germany
- Correspondence: (F.N.F.); (S.T.)
| | - Stamatios Theocharis
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Bld 10, Goudi, 11527 Athens, Greece
- Correspondence: (F.N.F.); (S.T.)
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RGS5 Protein Deficiency Differentially Influences Blood Pressure, Vascular and Behavioral Effects in Aged Male Mice. J Cardiovasc Pharmacol 2022; 80:305-313. [PMID: 35384894 DOI: 10.1097/fjc.0000000000001272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 03/14/2022] [Indexed: 11/26/2022]
Abstract
ABSTRACT Aging and elevated activity of the renin-angiotensin-system (RAS) are associated with hypertension, vascular and emotional behavioral abnormalities, like anxiety and depression. Many actions of the main effector hormone of the RAS, angiotensin II (Ang II), are mediated by Ang II type 1 receptor whose activity is modulated by the regulator of G-protein signaling 5 (RGS5) protein. We assessed the role of RGS5 on blood pressure, vascular and emotional behavioral outcomes in aged male mice in the presence and absence of chronically elevated Ang II levels. We used aged (∼21 month old) male RGS5-deficient (RGS5-/-) and wild-type (RGS5+/+) mice treated with vehicle (saline) or Ang II (1 mg/kg/d for 21 days). RGS5 deficiency increased baseline systolic blood pressure (SBP), and cerebral vascular superoxide levels in the presence of chronically elevated Ang II levels, suggesting that RGS5 deficiency leads to elevated blood pressure and deleterious cerebral vascular outcomes in aged mice. RGS5 deletion had no effect on Ang II-induced increases in SBP. Chronically elevated Ang II levels increased spontaneous locomotor activity in RGS5+/+, but not RGS5-/- mice. RGS5 deficiency and Ang II treatment had no effect on anxiety- and depression-like behavior. This is the first study to assess the effects of deficiency of an RGS protein in the vasculature or on emotional behavioral outcomes in aged mice. We report that RGS5 has protective effects on blood pressure and the cerebral vasculature in aged mice. Clinically, these data suggest that RAS blockers may significantly reduce cerebrovascular disease risk in aged males lacking RGS5.
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Britt JL, Greene MA, Klotz JL, Justice SM, Powell RR, Noorai RE, Bruce TF, Duckett SK. Mycotoxin ingestion during late gestation alters placentome structure, cotyledon transcriptome, and fetal development in pregnant sheep. Hum Exp Toxicol 2022; 41:9603271221119177. [PMID: 35947831 DOI: 10.1177/09603271221119177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Ergot alkaloids, a class of mycotoxins, induce vasoconstriction when consumed by animals and humans. Pregnant ewes (n = 16; 81.2 kg ± 7.7) were assigned fed endophyte-infected tall fescue seed (E+; 4.14 μg ergovaline + ergovalinine/g seed) or a control diet (CON; 0 μg ergovaline + ergovalinine) for increasing duration during late gestation (from gd86 to gd110 or gd133) to examine changes in placentome morphology and mRNA transcriptome, and fetal development. Exposure to E+ fescue reduced serum prolactin concentrations at gd110 and gd133 demonstrating treatment efficacy. For control ewes, cotyledon and total placentome weights decreased with advancing gestation due to remodeling of placental tissues; however, cotyledon and placentome weight did not change with advancing gestation in E+ fed ewes. Fetal brain sparing was evident in E+ exposed fetuses at gd110 and gd133 compared to CON, which demonstrates asymmetrical growth and intrauterine growth restriction. Mycotoxin exposure (E+) resulted in differential expression of 22 genes in the cotyledon tissue at gd110 but only one gene at gd133 compared to CON. These results suggest that the response to mycotoxin exposure in the pregnant sheep model has an immediate impact on placental remodeling and fetal development that persists throughout the duration of the exposure period.
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Affiliation(s)
- J L Britt
- Department of Animal and Veterinary Sciences, 2545Clemson University, Clemson, SC, USA
| | - M A Greene
- Department of Animal and Veterinary Sciences, 2545Clemson University, Clemson, SC, USA
| | - J L Klotz
- Forage Production Research Unit, USDA-ARS, Lexington, KY, USA
| | - S M Justice
- Department of Animal and Veterinary Sciences, 2545Clemson University, Clemson, SC, USA
| | - R R Powell
- Clemson University Light Imaging Facility, 2545Clemson University, Clemson, SC, USA
| | - R E Noorai
- Clemson University Genomics and Bioinformatics Facility, 2545Clemson University, Clemson, SC, USA
| | - T F Bruce
- Clemson University Light Imaging Facility, 2545Clemson University, Clemson, SC, USA
| | - S K Duckett
- Department of Animal and Veterinary Sciences, 2545Clemson University, Clemson, SC, USA
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Pathological AT1R-B2R Protein Aggregation and Preeclampsia. Cells 2021; 10:cells10102609. [PMID: 34685589 PMCID: PMC8533718 DOI: 10.3390/cells10102609] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 09/22/2021] [Accepted: 09/27/2021] [Indexed: 01/07/2023] Open
Abstract
Preeclampsia is one of the most frequent and severe complications of pregnancy. Symptoms of preeclampsia usually occur after 20 weeks of pregnancy and include hypertension and kidney dysfunction with proteinuria. Up to now, delivery of the infant has been the most effective and life-saving treatment to alleviate symptoms of preeclampsia because a causative treatment does not exist, which could prolong a pregnancy complicated with preeclampsia. Preeclampsia is a complex medical condition, which is attributed to a variety of different risk factors and causes. Risk factors account for insufficient placentation and impaired vasculogenesis and finally culminate in this life-threatening condition of pregnancy. Despite progress, many pathomechanisms and causes of preeclampsia are still incompletely understood. In recent years, it was found that excessive protein complex formation between G-protein-coupled receptors is a common sign of preeclampsia. Specifically, the aberrant heteromerization of two vasoactive G-protein-coupled receptors (GPCRs), the angiotensin II AT1 receptor and the bradykinin B2 receptor, is a causative factor of preeclampsia symptoms. Based on this knowledge, inhibition of abnormal GPCR protein complex formation is an experimental treatment approach of preeclampsia. This review summarizes the impact of pathological GPCR protein aggregation on symptoms of preeclampsia and delineates potential new therapeutic targets.
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Demirel E, Arnold C, Garg J, Jäger MA, Sticht C, Li R, Kuk H, Wettschureck N, Hecker M, Korff T. RGS5 Attenuates Baseline Activity of ERK1/2 and Promotes Growth Arrest of Vascular Smooth Muscle Cells. Cells 2021; 10:1748. [PMID: 34359918 PMCID: PMC8306326 DOI: 10.3390/cells10071748] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/25/2021] [Accepted: 07/07/2021] [Indexed: 01/14/2023] Open
Abstract
The regulator of G-protein signaling 5 (RGS5) acts as an inhibitor of Gαq/11 and Gαi/o activity in vascular smooth muscle cells (VSMCs), which regulate arterial tone and blood pressure. While RGS5 has been described as a crucial determinant regulating the VSMC responses during various vascular remodeling processes, its regulatory features in resting VSMCs and its impact on their phenotype are still under debate and were subject of this study. While Rgs5 shows a variable expression in mouse arteries, neither global nor SMC-specific genetic ablation of Rgs5 affected the baseline blood pressure yet elevated the phosphorylation level of the MAP kinase ERK1/2. Comparable results were obtained with 3D cultured resting VSMCs. In contrast, overexpression of RGS5 in 2D-cultured proliferating VSMCs promoted their resting state as evidenced by microarray-based expression profiling and attenuated the activity of Akt- and MAP kinase-related signaling cascades. Moreover, RGS5 overexpression attenuated ERK1/2 phosphorylation, VSMC proliferation, and migration, which was mimicked by selectively inhibiting Gαi/o but not Gαq/11 activity. Collectively, the heterogeneous expression of Rgs5 suggests arterial blood vessel type-specific functions in mouse VSMCs. This comprises inhibition of acute agonist-induced Gαq/11/calcium release as well as the support of a resting VSMC phenotype with low ERK1/2 activity by suppressing the activity of Gαi/o.
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Affiliation(s)
- Eda Demirel
- Department of Cardiovascular Physiology, Institute of Physiology and Pathophysiology, Heidelberg University, 69120 Heidelberg, Germany
| | - Caroline Arnold
- Department of Cardiovascular Physiology, Institute of Physiology and Pathophysiology, Heidelberg University, 69120 Heidelberg, Germany
| | - Jaspal Garg
- Department of Cardiovascular Physiology, Institute of Physiology and Pathophysiology, Heidelberg University, 69120 Heidelberg, Germany
| | - Marius Andreas Jäger
- Department of Cardiovascular Physiology, Institute of Physiology and Pathophysiology, Heidelberg University, 69120 Heidelberg, Germany
| | - Carsten Sticht
- NGS Core Facility, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Rui Li
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Hanna Kuk
- The Ottawa Department of Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Nina Wettschureck
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Markus Hecker
- Department of Cardiovascular Physiology, Institute of Physiology and Pathophysiology, Heidelberg University, 69120 Heidelberg, Germany
| | - Thomas Korff
- Department of Cardiovascular Physiology, Institute of Physiology and Pathophysiology, Heidelberg University, 69120 Heidelberg, Germany
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
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Fang S, Livergood MC, Nakagawa P, Wu J, Sigmund CD. Role of the Peroxisome Proliferator Activated Receptors in Hypertension. Circ Res 2021; 128:1021-1039. [PMID: 33793338 DOI: 10.1161/circresaha.120.318062] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Nuclear receptors represent a large family of ligand-activated transcription factors which sense the physiological environment and make long-term adaptations by mediating changes in gene expression. In this review, we will first discuss the fundamental mechanisms by which nuclear receptors mediate their transcriptional responses. We will focus on the PPAR (peroxisome proliferator-activated receptor) family of adopted orphan receptors paying special attention to PPARγ, the isoform with the most compelling evidence as an important regulator of arterial blood pressure. We will review genetic data showing that rare mutations in PPARγ cause severe hypertension and clinical trial data which show that PPARγ activators have beneficial effects on blood pressure. We will detail the tissue- and cell-specific molecular mechanisms by which PPARs in the brain, kidney, vasculature, and immune system modulate blood pressure and related phenotypes, such as endothelial function. Finally, we will discuss the role of placental PPARs in preeclampsia, a life threatening form of hypertension during pregnancy. We will close with a viewpoint on future research directions and implications for developing novel therapies.
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Affiliation(s)
- Shi Fang
- Department of Physiology, Cardiovascular Center (S.F., P.N., J.W., C.D.S.), Medical College of Wisconsin, Milwaukee.,Department of Neuroscience and Pharmacology, University of Iowa (S.F.)
| | - M Christine Livergood
- Department of Obstetrics and Gynecology (M.C.L.), Medical College of Wisconsin, Milwaukee
| | - Pablo Nakagawa
- Department of Physiology, Cardiovascular Center (S.F., P.N., J.W., C.D.S.), Medical College of Wisconsin, Milwaukee
| | - Jing Wu
- Department of Physiology, Cardiovascular Center (S.F., P.N., J.W., C.D.S.), Medical College of Wisconsin, Milwaukee
| | - Curt D Sigmund
- Department of Physiology, Cardiovascular Center (S.F., P.N., J.W., C.D.S.), Medical College of Wisconsin, Milwaukee
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Hu M, Li J, Baker PN, Tong C. Revisiting preeclampsia: a metabolic disorder of the placenta. FEBS J 2021; 289:336-354. [PMID: 33529475 DOI: 10.1111/febs.15745] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 01/13/2021] [Accepted: 01/29/2021] [Indexed: 12/31/2022]
Abstract
Preeclampsia (PE) is a leading cause of maternal and neonatal mortality and morbidity worldwide, impacting the long-term health of both mother and offspring. PE has long been characterized by deficient trophoblast invasion into the uterus and consequent placental hypoperfusion, yet the upstream causative factors and effective interventional targets for PE remain unknown. Alterations in the metabolism of preeclamptic placentas are thought to result from placental ischemia, while disturbances of the metabolism and of metabolites in PE pathogenesis are largely ignored. In fact, as one of the largest fetal organs at birth, the placenta consumes a considerable amount of glucose and fatty acid. Increasing evidence suggests glucose and fatty acid exist as energy substrates and regulate placental development through bioactive derivates. Moreover, recent findings have revealed that the placental metabolism adapts readily to environmental changes, altering its response to nutrients and endocrine signals; this adaptability optimizes pregnancy outcomes by diversifying available carbon sources for energy production, hormone synthesis, angiogenesis, immune activation, and tolerance, and fetoplacental growth. These observations raise the possibility that carbohydrate and lipid metabolism abnormalities play a role in both the etiology and clinical progression of PE, sparking a renewed interest in the interrelationship between PE and metabolic dysregulation. This review will focus on key metabolic substrates and regulatory molecules in the placenta and aim to provide novel insights with respect to the metabolism's role in modulating placental development and functions. Further investigations from this perspective are poised to decipher the etiology of PE and suggest potential therapies.
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Affiliation(s)
- Mingyu Hu
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, China
| | - Ji Li
- Department of Surgery, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | | | - Chao Tong
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, China
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10
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Smith OM. Editorial expression of concern. Sci Transl Med 2020; 12:12/566/eabf2620. [DOI: 10.1126/scitranslmed.abf2620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Sladojevic N, Yu B, Liao JK. Regulator of G-Protein Signaling 5 Maintains Brain Endothelial Cell Function in Focal Cerebral Ischemia. J Am Heart Assoc 2020; 9:e017533. [PMID: 32875943 PMCID: PMC7726987 DOI: 10.1161/jaha.120.017533] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Regulator of G‐protein signaling 5 (RGS5) is a negative modulator of G‐protein–coupled receptors. The role of RGS5 in brain endothelial cells is not known. We hypothesized that RGS5 in brain microvascular endothelial cells may be an important mediator of blood‐brain barrier function and stroke severity after focal cerebral ischemia. Methods and Results Using a transient middle cerebral artery occlusion model, we found that mice with global and endothelial‐specific deletion of Rgs5 exhibited larger cerebral infarct size, greater neurological motor deficits, and increased brain edema. In our in vitro models, we observed increased Gq activity and elevated intracellular Ca2+ levels in brain endothelial cells. Furthermore, the loss of endothelial RGS5 leads to decreased endothelial NO synthase expression and phosphorylation, relocalization of endothelial tight junction proteins, and increased cell permeability. Indeed, RGS5 deficiency leads to increased Rho‐associated kinase and myosin light chain kinase activity, which were partially reversed in our in vitro model by pharmacological inhibition of Gq, metabotropic glutamate receptor 1, and ligand‐gated ionotropic glutamate receptor. Conclusions Our findings indicate that endothelial RGS5 plays a novel neuroprotective role in focal cerebral ischemia. Loss of endothelial RGS5 leads to hyperresponsiveness to glutamate signaling pathways, enhanced Rho‐associated kinase– and myosin light chain kinase–mediated actin‐cytoskeleton reorganization, endothelial dysfunction, tight junction protein relocalization, increased blood‐brain barrier permeability, and greater stroke severity. These findings suggest that preservation of endothelial RGS5 may be an important therapeutic strategy for maintaining blood‐brain barrier integrity and limiting the severity of ischemic stroke.
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Affiliation(s)
- Nikola Sladojevic
- Section of Cardiology Department of Medicine University of Chicago Chicago IL
| | - Brian Yu
- Section of Cardiology Department of Medicine University of Chicago Chicago IL
| | - James K Liao
- Section of Cardiology Department of Medicine University of Chicago Chicago IL
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Koch JN, Dahlen SA, Owens EA, Osei-Owusu P. Regulator of G Protein Signaling 2 Facilitates Uterine Artery Adaptation During Pregnancy in Mice. J Am Heart Assoc 2020; 8:e010917. [PMID: 31030617 PMCID: PMC6512123 DOI: 10.1161/jaha.118.010917] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Background Decreased uterine blood flow is known to contribute to pregnancy complications such as gestational hypertension and preeclampsia. Previously, we showed that the loss of regulator of G protein signaling 2 ( RGS 2), a GTP ase activating protein for Gq/11 and Gi/o class G proteins, decreases uterine blood flow in the nonpregnant state in mice. Here, we examined the effects of the absence of RGS 2 and 5 on uterine blood flow and uterine vascular structure and function at early, mid, and late gestation, as well as peripartum period in mice. Methods and Results Abdominal Doppler ultrasonography was performed on adult female wild-type, Rgs2-/-, and Rgs5-/- mice at pre-pregnancy, gestational days 10, 15, and 18, and postpartum day 3. Uterine artery structure and function were also assessed by vessel myograph studies. At mid-pregnancy, uterine blood flow decreased in both Rgs2-/- and Rgs5-/- mice, whereas resistive index increased only in Rgs2-/- mice. In uterine arteries from wild-type mice, mRNA expression of RGS 2 and 4 increased, whereas RGS 5 expression remained elevated at mid-pregnancy. These changes in gene expression were unique to uterine arteries because they were absent in mesenteric arteries and the aorta of wild-type mice. In Rgs2-/- mice, uterine artery medial cross-sectional area and G protein-coupled receptor-mediated vasoconstriction increased in mid-pregnancy, implicating a role for RGS 2 in structural and functional remodeling of uterine arteries during pregnancy. In contrast, RGS 5 absence increased vasoconstriction only in the peripartum period. Conclusions These data together indicate that RGS 2 plays a critical role in the structural and functional remodeling of uterine arteries to impact uterine blood flow during pregnancy. Targeting the signaling pathway regulated by RGS 2 may therefore be a therapeutic strategy for ameliorating utero-placental perfusion disorders during pregnancy.
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Affiliation(s)
- Jennifer N Koch
- 1 Department of Pharmacology and Physiology Drexel University College of Medicine Philadelphia PA
| | - Shelby A Dahlen
- 1 Department of Pharmacology and Physiology Drexel University College of Medicine Philadelphia PA
| | - Elizabeth A Owens
- 1 Department of Pharmacology and Physiology Drexel University College of Medicine Philadelphia PA
| | - Patrick Osei-Owusu
- 1 Department of Pharmacology and Physiology Drexel University College of Medicine Philadelphia PA
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13
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Lane SL, Doyle AS, Bales ES, Houck JA, Lorca RA, Moore LG, Julian CG. Peroxisome proliferator-activated receptor gamma blunts endothelin-1-mediated contraction of the uterine artery in a murine model of high-altitude pregnancy. FASEB J 2020; 34:4283-4292. [PMID: 31970838 DOI: 10.1096/fj.201902264rr] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 01/02/2020] [Accepted: 01/08/2020] [Indexed: 01/12/2023]
Abstract
The environmental hypoxia of high altitude (HA) increases the incidence of intrauterine growth restriction (IUGR) approximately threefold. The peroxisome proliferator-activated receptor γ (PPAR-γ), a ligand-activated nuclear receptor that promotes vasorelaxation by increasing nitric oxide and downregulating endothelin-1 (ET-1) production, has been implicated in IUGR. Based on our prior work indicating that pharmacologic activation of the PPARγ pathway protects against hypoxia-associated IUGR, we used an experimental murine model to determine whether such effects may be attributed to vasodilatory effects in the uteroplacental circulation. Using wire myography, ex vivo vasoreactivity studies were conducted in uterine arteries (UtA) isolated from pregnant mice exposed to hypoxia or normoxia from gestational day 14.5 to 18.5. Exposure to troglitazone, a high-affinity PPARγ agonist-induced vasorelaxation in UtA preconstricted with phenylephrine, with HA-UtA showing increased sensitivity. Troglitazone blunted ET-1-induced contraction of UtA in hypoxic and normoxic dams equivalently. Immunohistological analysis revealed enhanced staining for ET-1 receptors in the placental labyrinthine zone in hypoxic compared to normoxic dams. Our results suggest that pharmacologic PPAR-γ activation, via its vasoactive properties, may protect the fetal growth under hypoxic conditions by improving uteroplacental perfusion and thereby justify further investigation into PPARγ as a therapeutic target for IUGR in pregnancies complicated by hypoxia.
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Affiliation(s)
- Sydney L Lane
- Integrated Physiology Program, University of Colorado Graduate School, Aurora, CO, USA.,Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Alexandrea S Doyle
- Department of Biochemistry, Colorado Mesa University, Grand Junction, CO, USA
| | - Elise S Bales
- Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Julie A Houck
- Department of Biochemistry, Colorado Mesa University, Grand Junction, CO, USA
| | - Ramón A Lorca
- Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Lorna G Moore
- Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Colleen G Julian
- Department of Medicine, University of Colorado School of Medicine, Aurora, CO, USA
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14
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Perschbacher KJ, Deng G, Sandgren JA, Walsh JW, Witcher PC, Sapouckey SA, Owens CE, Zhang SY, Scroggins SM, Pearson NA, Devor EJ, Sebag JA, Pierce GL, Fisher RA, Kwitek AE, Santillan DA, Gibson-Corley KN, Sigmund CD, Santillan MK, Grobe JL. Reduced mRNA Expression of RGS2 (Regulator of G Protein Signaling-2) in the Placenta Is Associated With Human Preeclampsia and Sufficient to Cause Features of the Disorder in Mice. Hypertension 2019; 75:569-579. [PMID: 31865781 DOI: 10.1161/hypertensionaha.119.14056] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cascade-specific termination of G protein signaling is catalyzed by the RGS (regulator of G protein signaling) family members, including RGS2. Angiotensin, vasopressin, and endothelin are implicated in preeclampsia, and RGS2 is known to inhibit G protein cascades activated by these hormones. Mutations in RGS2 are associated with human hypertension and increased risk of developing preeclampsia and its sequelae. RGS family members are known to influence maternal vascular function, but the role of RGS2 within the placenta has not been explored. Here, we hypothesized that reduced expression of RGS2 within the placenta represents a risk factor for the development of preeclampsia. Although cAMP/CREB signaling was enriched in placentas from human pregnancies affected by preeclampsia compared with clinically matched controls and RGS2 is known to be a CREB-responsive gene, RGS2 mRNA was reduced in placentas from pregnancies affected by preeclampsia. Experimentally reducing Rgs2 expression within the feto-placental unit was sufficient to induce preeclampsia-like phenotypes in pregnant wild-type C57BL/6J mice. Stimulation of RGS2 transcription within immortalized human HTR8/SVneo trophoblasts by cAMP/CREB signaling was discovered to be dependent on the activity of histone deacetylase activity, and more specifically, HDAC9 (histone deacetylase-9), and HDAC9 expression was reduced in placentas from human pregnancies affected by preeclampsia. We conclude that reduced expression of RGS2 within the placenta may mechanistically contribute to preeclampsia. More generally, this work identifies RGS2 as an HDAC9-dependent CREB-responsive gene, which may contribute to reduced RGS2 expression in placenta during preeclampsia.
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Affiliation(s)
- Katherine J Perschbacher
- From the Department of Pharmacology (K.J.P., G.D., J.A.S., J.W.W., P.C.W., S.A.S., C.E.O., S.Y.Z., N.A.P., R.A.F.), University of Iowa, Iowa City
| | - Guorui Deng
- From the Department of Pharmacology (K.J.P., G.D., J.A.S., J.W.W., P.C.W., S.A.S., C.E.O., S.Y.Z., N.A.P., R.A.F.), University of Iowa, Iowa City
| | - Jeremy A Sandgren
- From the Department of Pharmacology (K.J.P., G.D., J.A.S., J.W.W., P.C.W., S.A.S., C.E.O., S.Y.Z., N.A.P., R.A.F.), University of Iowa, Iowa City
| | - John W Walsh
- From the Department of Pharmacology (K.J.P., G.D., J.A.S., J.W.W., P.C.W., S.A.S., C.E.O., S.Y.Z., N.A.P., R.A.F.), University of Iowa, Iowa City
| | - Phillip C Witcher
- From the Department of Pharmacology (K.J.P., G.D., J.A.S., J.W.W., P.C.W., S.A.S., C.E.O., S.Y.Z., N.A.P., R.A.F.), University of Iowa, Iowa City
| | - Sarah A Sapouckey
- From the Department of Pharmacology (K.J.P., G.D., J.A.S., J.W.W., P.C.W., S.A.S., C.E.O., S.Y.Z., N.A.P., R.A.F.), University of Iowa, Iowa City
| | - Caitlyn E Owens
- From the Department of Pharmacology (K.J.P., G.D., J.A.S., J.W.W., P.C.W., S.A.S., C.E.O., S.Y.Z., N.A.P., R.A.F.), University of Iowa, Iowa City
| | - Shao Yang Zhang
- From the Department of Pharmacology (K.J.P., G.D., J.A.S., J.W.W., P.C.W., S.A.S., C.E.O., S.Y.Z., N.A.P., R.A.F.), University of Iowa, Iowa City
| | - Sabrina M Scroggins
- Department of Obstetrics and Gynecology (S.M.S., E.J.D., D.A.S., M.K.S.), University of Iowa, Iowa City
| | - Nicole A Pearson
- From the Department of Pharmacology (K.J.P., G.D., J.A.S., J.W.W., P.C.W., S.A.S., C.E.O., S.Y.Z., N.A.P., R.A.F.), University of Iowa, Iowa City
| | - Eric J Devor
- Department of Obstetrics and Gynecology (S.M.S., E.J.D., D.A.S., M.K.S.), University of Iowa, Iowa City
| | - Julien A Sebag
- Department of Physiology (J.A.S.), University of Iowa, Iowa City
| | - Gary L Pierce
- Department of Health and Human Physiology (G.L.P.), University of Iowa, Iowa City.,Abboud Cardiovascular Research Center (G.L.P., D.A.S., M.K.S.), University of Iowa, Iowa City
| | - Rory A Fisher
- From the Department of Pharmacology (K.J.P., G.D., J.A.S., J.W.W., P.C.W., S.A.S., C.E.O., S.Y.Z., N.A.P., R.A.F.), University of Iowa, Iowa City
| | - Anne E Kwitek
- Department of Physiology (A.E.K., C.D.S., J.L.G.), Medical College of Wisconsin, Milwaukee.,Cardiovascular Center (A.E.K., C.D.S., J.L.G.), Medical College of Wisconsin, Milwaukee.,Department of Medicine (A.E.K.), Medical College of Wisconsin, Milwaukee
| | - Donna A Santillan
- Department of Obstetrics and Gynecology (S.M.S., E.J.D., D.A.S., M.K.S.), University of Iowa, Iowa City.,Abboud Cardiovascular Research Center (G.L.P., D.A.S., M.K.S.), University of Iowa, Iowa City
| | | | - Curt D Sigmund
- Department of Physiology (A.E.K., C.D.S., J.L.G.), Medical College of Wisconsin, Milwaukee.,Cardiovascular Center (A.E.K., C.D.S., J.L.G.), Medical College of Wisconsin, Milwaukee
| | - Mark K Santillan
- Department of Obstetrics and Gynecology (S.M.S., E.J.D., D.A.S., M.K.S.), University of Iowa, Iowa City.,Abboud Cardiovascular Research Center (G.L.P., D.A.S., M.K.S.), University of Iowa, Iowa City
| | - Justin L Grobe
- Department of Physiology (A.E.K., C.D.S., J.L.G.), Medical College of Wisconsin, Milwaukee.,Cardiovascular Center (A.E.K., C.D.S., J.L.G.), Medical College of Wisconsin, Milwaukee.,Department of Biomedical Engineering (J.L.G.), Medical College of Wisconsin, Milwaukee
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15
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Benny P, Yamasato K, Yunits B, Zhu X, Ching T, Garmire LX, Berry MJ, Towner D. Maternal cardiovascular-related single nucleotide polymorphisms, genes, and pathways associated with early-onset preeclampsia. PLoS One 2019; 14:e0222672. [PMID: 31557190 PMCID: PMC6762142 DOI: 10.1371/journal.pone.0222672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 09/04/2019] [Indexed: 12/26/2022] Open
Abstract
INTRODUCTION Preeclampsia is a medical condition complicated with hypertension and proteinuria during pregnancy. While preeclampsia affects approximately 5% of pregnancies, it remains without a cure. In addition, women who had preeclampsia during pregnancy have been reported to have an increased risk for cardiovascular disease later in life. However, the disease etiology and molecular mechanisms remain poorly understood. The paucity in the literature on preeclampsia associated maternal cardiovascular risk in different ethnic populations also present a need for more research. Therefore, the objective of this study was to identify cardiovascular/metabolic single nucleotide polymorphisms (SNPs), genes, and regulatory pathways associated with early-onset preeclampsia. MATERIALS AND METHODS We compared maternal DNAs from 31 women with early-onset preeclampsia with those from a control group of 29 women without preeclampsia who delivered full-term normal birthweight infants. Women with multiple gestations and/or known medical disorders associated with preeclampsia (pregestational diabetes, chronic hypertension, renal disease, hyperthyroidism, and lupus) were excluded. The MetaboChip genotyping array with approximately 197,000 SNPs associated with metabolic and cardiovascular traits was used. Single nucleotide polymorphism analysis was performed using the SNPAssoc program in R. The Truncated Product Method was used to identify significantly associated genes. Ingenuity Pathway Analysis and Ingenuity Causal Network Analysis were used to identify significantly associated disease processes and regulatory gene networks respectively. RESULTS The early-onset preeclampsia group included 45% Filipino, 26% White, 16% other Asian, and 13% Native Hawaiian and other Pacific Islanders, which did not differ from the control group. There were no SNPs associated with early-onset preeclampsia after correction for multiple comparisons. However, through gene-based tests, 68 genes and 23 cardiovascular disease-related processes were found to be significantly associated. Associated gene regulatory networks involved cellular movement, cardiovascular disease, and inflammatory disease. CONCLUSIONS Multiple cardiovascular genes and diseases demonstrate associations with early-onset preeclampsia. This unfolds new areas of research regarding the genetic determinants of early-onset preeclampsia and their relation to future cardiovascular disease.
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Affiliation(s)
- Paula Benny
- University of Hawaii Cancer Center, Honolulu, Hawai’i, United States of America
| | - Kelly Yamasato
- Department of Obstetrics, Gynecology, and Women’s Health, John A Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawai’i, United States of America
| | - Breck Yunits
- University of Hawaii Cancer Center, Honolulu, Hawai’i, United States of America
| | - Xun Zhu
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, Hawai’i, United States of America
| | - Travers Ching
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, Hawai’i, United States of America
| | - Lana X. Garmire
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Marla J. Berry
- Department of Cell and Molecular Biology, John A Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawai’i, United States of America
| | - Dena Towner
- Department of Obstetrics, Gynecology, and Women’s Health, John A Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawai’i, United States of America
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16
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Lane SL, Dodson RB, Doyle AS, Park H, Rathi H, Matarrazo CJ, Moore LG, Lorca RA, Wolfson GH, Julian CG. Pharmacological activation of peroxisome proliferator-activated receptor γ (PPAR-γ) protects against hypoxia-associated fetal growth restriction. FASEB J 2019; 33:8999-9007. [PMID: 31039323 PMCID: PMC6662983 DOI: 10.1096/fj.201900214r] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 04/08/2019] [Indexed: 12/11/2022]
Abstract
The hypoxia of high-altitude (HA) residence increases the risk of intrauterine growth restriction (IUGR) and preeclampsia 3-fold, augmenting perinatal morbidity and mortality and the risk for childhood and adult disease. Currently, no effective therapies exist to prevent these vascular disorders of pregnancy. The peroxisome proliferator-activated receptor γ (PPAR-γ) is an important regulator of uteroplacental vascular development and function and has been implicated in the pathogenesis of IUGR and preeclampsia. Here, we used a model of HA pregnancy in mice to determine whether hypoxia-induced fetal growth restriction reduces placental PPAR-γ protein expression and placental vascularization and, if so, to evaluate the effectiveness of the selective PPAR-γ agonist pioglitazone (PIO) for preventing hypoxia-induced IUGR. Hypoxia resulted in asymmetric IUGR, placental insufficiency, and reduced placental PPAR-γ expression; PIO prevented approximately half of the fetal growth restriction and attenuated placental insufficiency. PIO did not affect fetal growth under normoxia. Although PIO was beneficial for fetal growth, PIO treatment reduced placental vascular density of the labrynthine zone in normoxic and hypoxic (Hx) conditions, and mean vascular area was reduced in the Hx group. Our results suggest that pharmacological PPAR-γ activation is a potential strategy for preventing IUGR in pregnancies complicated by hypoxia, although further studies are needed to identify its likely metabolic or vascular mechanisms.-Lane, S. L., Dodson, R. B., Doyle, A. S., Park, H., Rathi, H., Matarrazo, C. J., Moore, L. G., Lorca, R. A., Wolfson, G. H., Julian, C. G. Pharmacological activation of peroxisome proliferator-activated receptor γ (PPAR-γ) protects against hypoxia-associated fetal growth restriction.
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Affiliation(s)
- Sydney L. Lane
- Integrated Physiology Program, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - R. Blair Dodson
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Alexandrea S. Doyle
- Department of Integrative Biology, University of Colorado Denver, Denver, Colorado, USA
| | - Haemin Park
- Colorado Undergraduate Research in Environmental Health Sciences, University of Colorado Denver, Denver, Colorado, USA
| | - Hinal Rathi
- Department of Integrative Biology, University of Colorado Denver, Denver, Colorado, USA
| | | | - Lorna G. Moore
- Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Ramón A. Lorca
- Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Gabriel H. Wolfson
- Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA; and
| | - Colleen G. Julian
- Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA; and
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17
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Maeda KJ, Showmaker KC, Johnson AC, Garrett MR, Sasser JM. Spontaneous superimposed preeclampsia: chronology and expression unveiled by temporal transcriptomic analysis. Physiol Genomics 2019; 51:342-355. [PMID: 31125289 DOI: 10.1152/physiolgenomics.00020.2019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Preeclampsia (PE), a multifactorial pregnancy-specific syndrome accounting for up to 8% of pregnancy complications, is a leading cause of maternal and fetal morbidity and mortality. PE is also associated with long-term risk of hypertension and stroke for both mother and fetus. Currently, the only "cure" is delivery of the baby and placenta, largely because the pathogenesis of PE is not yet fully understood. PE is associated with impaired vascular remodeling at the maternal-fetal interface and placental insufficiency; however, specific factors contributing to this impairment have not been identified. To identify molecular pathways involved in PE, we examined temporal transcriptomic changes occurring within the uterus, uterine implantation sites, and placentae from the Dahl salt-sensitive (Dahl S) rat model of superimposed PE compared with Sprague Dawley (SD) rats. We hypothesized that targeted gene analysis and whole transcriptome analysis would identify genetic factors that contribute to development of the preeclamptic phenotype in the Dahl S rat and unveil novel biomarkers, therapeutic targets, and mechanistic pathways in PE. Quantitative real-time PCR (qRT-PCR) and whole genome microarray analysis were performed on isolated total RNA from uterus (day 0), uterine implantation sites (days 7 and 10), and placenta (days 14 and 20). We found 624, 332, 185, and 366 genes to be differentially expressed between Dahl S (PE) and SD (normal pregnancy) on days 0, 7, 10, and 14, respectively. Our data revealed numerous pathways that may play a role in the pathophysiology of spontaneous superimposed PE and allow for further investigation of novel therapeutic targets and biomarker development.
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Affiliation(s)
- Kenji J Maeda
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Kurt C Showmaker
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi.,Molecular and Genomics Core, University of Mississippi Medical Center, Jackson, Mississippi
| | - Ashley C Johnson
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi.,Molecular and Genomics Core, University of Mississippi Medical Center, Jackson, Mississippi
| | - Michael R Garrett
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi.,Molecular and Genomics Core, University of Mississippi Medical Center, Jackson, Mississippi.,Department of Medicine (Nephrology), University of Mississippi Medical Center, Jackson, Mississippi
| | - Jennifer M Sasser
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
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18
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Quitterer U, Fu X, Pohl A, Bayoumy KM, Langer A, AbdAlla S. Beta-Arrestin1 Prevents Preeclampsia by Downregulation of Mechanosensitive AT1-B2 Receptor Heteromers. Cell 2018; 176:318-333.e19. [PMID: 30503206 DOI: 10.1016/j.cell.2018.10.050] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 08/26/2018] [Accepted: 10/23/2018] [Indexed: 12/20/2022]
Abstract
Preeclampsia is the most frequent pregnancy-related complication worldwide with no cure. While a number of molecular features have emerged, the underlying causal mechanisms behind the disorder remain obscure. Here, we find that increased complex formation between angiotensin II AT1 and bradykinin B2, two G protein-coupled receptors with opposing effects on blood vessel constriction, triggers symptoms of preeclampsia in pregnant mice. Aberrant heteromerization of AT1-B2 led to exaggerated calcium signaling and high vascular smooth muscle mechanosensitivity, which could explain the onset of preeclampsia symptoms at late-stage pregnancy as mechanical forces increase with fetal mass. AT1-B2 receptor aggregation was inhibited by beta-arrestin-mediated downregulation. Importantly, symptoms of preeclampsia were prevented by transgenic ARRB1 expression or a small-molecule drug. Because AT1-B2 heteromerization was found to occur in human placental biopsies from pregnancies complicated by preeclampsia, specifically targeting AT1-B2 heteromerization and its downstream consequences represents a promising therapeutic approach.
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Affiliation(s)
- Ursula Quitterer
- Molecular Pharmacology, Department of Chemistry and Applied Biosciences, ETH Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland; Department of Medicine, Institute of Pharmacology and Toxicology, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.
| | - Xuebin Fu
- Department of Microbiology and Immunology, Stanford University, 299 Campus Dr., Stanford, CA 94305, USA
| | - Armin Pohl
- Roche Diagnostics International AG, Forrenstrasse 2, 6343 Rotkreuz, Switzerland
| | - Karam M Bayoumy
- Clinic of Obstetrics and Gynecology, Ain Shams University Hospitals, Cairo 11566, Egypt
| | - Andreas Langer
- Molecular Pharmacology, Department of Chemistry and Applied Biosciences, ETH Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Said AbdAlla
- Molecular Pharmacology, Department of Chemistry and Applied Biosciences, ETH Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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19
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Perschbacher KJ, Deng G, Fisher RA, Gibson-Corley KN, Santillan MK, Grobe JL. Regulators of G protein signaling in cardiovascular function during pregnancy. Physiol Genomics 2018; 50:590-604. [PMID: 29702036 PMCID: PMC6139632 DOI: 10.1152/physiolgenomics.00037.2018] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
G protein-coupled receptor signaling mechanisms are implicated in many aspects of cardiovascular control, and dysfunction of such signaling mechanisms is commonly associated with disease states. Investigators have identified a large number of regulator of G protein signaling (RGS) proteins that variously contribute to the modulation of intracellular second-messenger signaling kinetics. These many RGS proteins each interact with a specific set of second-messenger cascades and receptor types and exhibit tissue-specific expression patterns. Increasing evidence supports the contribution of RGS proteins, or their loss, in the pathogenesis of cardiovascular dysfunctions. This review summarizes the current understanding of the functional contributions of RGS proteins, particularly within the B/R4 family, in cardiovascular disorders of pregnancy including gestational hypertension, uterine artery dysfunction, and preeclampsia.
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Affiliation(s)
| | - Guorui Deng
- Department of Pharmacology, University of Iowa , Iowa City, Iowa
| | - Rory A Fisher
- Department of Pharmacology, University of Iowa , Iowa City, Iowa
| | - Katherine N Gibson-Corley
- Department of Pathology, University of Iowa , Iowa City, Iowa
- UIHC Center for Hypertension Research, University of Iowa , Iowa City, Iowa
| | - Mark K Santillan
- Department of Obstetrics & Gynecology, University of Iowa , Iowa City, Iowa
- UIHC Center for Hypertension Research, University of Iowa , Iowa City, Iowa
- Abboud Cardiovascular Research Center, University of Iowa , Iowa City, Iowa
| | - Justin L Grobe
- Department of Pharmacology, University of Iowa , Iowa City, Iowa
- UIHC Center for Hypertension Research, University of Iowa , Iowa City, Iowa
- Abboud Cardiovascular Research Center, University of Iowa , Iowa City, Iowa
- Fraternal Order of Eagles' Diabetes Research Center, University of Iowa , Iowa City, Iowa
- Obesity Education & Research Initiative, University of Iowa , Iowa City, Iowa
- Iowa Neuroscience Institute, University of Iowa , Iowa City, Iowa
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20
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Xiong ZH, Wei J, Lu MQ, Jin MY, Geng HL. Protective effect of human umbilical cord mesenchymal stem cell exosomes on preserving the morphology and angiogenesis of placenta in rats with preeclampsia. Biomed Pharmacother 2018; 105:1240-1247. [PMID: 30021360 DOI: 10.1016/j.biopha.2018.06.032] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 06/07/2018] [Accepted: 06/07/2018] [Indexed: 12/20/2022] Open
Abstract
AIM This study aims to investigate the effect of human umbilical cord mesenchymal stem cell exosomes (hucMSC-Ex) on placental tissue and angiogenesis in rats with preeclampsia (PE). METHOD The expression of MSC surface markers were identified by flow cytometry. Alizarin red staining and oil red O staining were used to examine osteogenic and adipogenic differentiation of hucMSCs. Western blotting was used to determine expressions of CD63 and CD81 in hucMSC-Ex. PE rat models were established using endothelial nitric oxide synthase, eNOS)NG-Nitro-l-arginine Methyl Ester, which were then treated with exosome (Exo) of low dosage (L-Exo), Exo of medium dosage (M-Exo) and Exo of high dosage (H-Exo). The blood pressure at the 15d, 17d and 19d of pregnancy and 24-h urinary protein were measured. TUNEL staining and immunohistochemistry were applied to detect the cell apoptosis and micro-vascular density (MVD) in placental tissues, respectively. Enzyme-linked immunosorbent assay (ELISA) was used to examine serum levels of vascular endothelial growth factor (VEGF) and soluble fms-like tyrosine kinase receptor-1 (sFlt1). RESULTS In vitro cultured hucMSCs showed expression of MSC surface markers (CD29, CD90 and CD105), and no expression of CD34 and CD45. Besides, the isolated exosomes expressed the exosome markers (CD63 and CD81). In response to the treatment of L-Exo, M-Exo and H-Exo, the blood pressure of PE rat models on the 17 d and the 19 d as well as the 24-h urinary protein were substantially decreased. Moreover, at the 21 d, PE rat models treated with L-Exo, M-Exo and H-Exo exhibited an increase in the number and quality of fetuses, placenta quality, MVD and VEGF expression, but substantial decreased cell apoptosis and expression of sFlt1. The influence of Exos was exerted in a dosage dependent manner. CONCLUSION hucMSC-Ex, in a dose-dependent manner, can improve the morphology of placental tissue in rats with PE, by inhibiting cell apoptosis and promoting angiogenesis in placental tissue.
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Affiliation(s)
- Zhi-Hui Xiong
- Department of Obstetrics, Tongde Hospital of Zhejiang Province, Hangzhou 310012, PR China
| | - Jing Wei
- Department of Obstetrics, Hangzhou First People's Hospital, Hangzhou 310006, PR China
| | - Meng-Qi Lu
- Department of Obstetrics, Tongde Hospital of Zhejiang Province, Hangzhou 310012, PR China
| | - Mei-Yuan Jin
- Department of Obstetrics, Tongde Hospital of Zhejiang Province, Hangzhou 310012, PR China
| | - Hong-Ling Geng
- Department of Gynaecology, Guangdong Provincial Hospital of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, No 111, Dade Road, Yuexiu District, Guangzhou 510120, PR China.
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Arnold C, Demirel E, Feldner A, Genové G, Zhang H, Sticht C, Wieland T, Hecker M, Heximer S, Korff T. Hypertension‐evoked RhoA activity in vascular smooth muscle cells requires RGS5. FASEB J 2018; 32:2021-2035. [DOI: 10.1096/fj.201700384rr] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Caroline Arnold
- Department of Cardiovascular Physiology, Institute of Physiology and PathophysiologyHeidelberg UniversityHeidelbergGermany
| | - Eda Demirel
- Department of Cardiovascular Physiology, Institute of Physiology and PathophysiologyHeidelberg UniversityHeidelbergGermany
| | - Anja Feldner
- Department of Cardiovascular Physiology, Institute of Physiology and PathophysiologyHeidelberg UniversityHeidelbergGermany
| | - Guillem Genové
- Center of Medical ResearchHeidelberg UniversityHeidelbergGermany
| | - Hangjun Zhang
- Institute of Experimental and Clinical Pharmacology and Toxicology, Medical Faculty MannheimHeidelberg UniversityHeidelbergGermany
| | - Carsten Sticht
- Integrated Cardiometabolic CenterKarolinska InstituteHuddingeSweden
| | - Thomas Wieland
- Department of Physiology, Heart and Stroke Richard Lewar Centre of Excellence for Cardiovascular ResearchUniversity of TorontoTorontoOntarioCanada
| | - Markus Hecker
- Department of Cardiovascular Physiology, Institute of Physiology and PathophysiologyHeidelberg UniversityHeidelbergGermany
| | - Scott Heximer
- Institute of Experimental and Clinical Pharmacology and Toxicology, Medical Faculty MannheimHeidelberg UniversityHeidelbergGermany
| | - Thomas Korff
- Department of Cardiovascular Physiology, Institute of Physiology and PathophysiologyHeidelberg UniversityHeidelbergGermany
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22
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Hong K, Li M, Nourian Z, Meininger GA, Hill MA. Angiotensin II Type 1 Receptor Mechanoactivation Involves RGS5 (Regulator of G Protein Signaling 5) in Skeletal Muscle Arteries: Impaired Trafficking of RGS5 in Hypertension. Hypertension 2017; 70:1264-1272. [PMID: 29061726 DOI: 10.1161/hypertensionaha.117.09757] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 06/11/2017] [Accepted: 09/20/2017] [Indexed: 01/07/2023]
Abstract
Studies suggest that arteriolar pressure-induced vasoconstriction can be initiated by GPCRs (G protein-coupled receptors), including the AT1R (angiotensin II type 1 receptor). This raises the question, are such mechanisms regulated by negative feedback? The present studies examined whether RGS (regulators of G protein signaling) proteins in vascular smooth muscle cells are colocalized with the AT1R when activated by mechanical stress or angiotensin II and whether this modulates AT1R-mediated vasoconstriction. To determine whether activation of the AT1R recruits RGS5, an in situ proximity ligation assay was performed in primary cultures of cremaster muscle arteriolar vascular smooth muscle cells treated with angiotensin II or hypotonic solution in the absence or presence of candesartan (an AT1R blocker). Proximity ligation assay results revealed a concentration-dependent increase in trafficking/translocation of RGS5 toward the activated AT1R, which was attenuated by candesartan. In intact arterioles, knockdown of RGS5 enhanced constriction to angiotensin II and augmented myogenic responses to increased intraluminal pressure. Myogenic constriction was attenuated to a higher degree by candesartan in RGS5 siRNA-transfected arterioles, consistent with RGS5 contributing to downregulation of AT1R-mediated signaling. Further, translocation of RGS5 was impaired in vascular smooth muscle cells of spontaneously hypertensive rats. This is consistent with dysregulated (RGS5-mediated) AT1R signaling that could contribute to excessive vasoconstriction in hypertension. In intact vessels, candesartan reduced myogenic vasoconstriction to a greater extent in spontaneously hypertensive rats compared with controls. Collectively, these findings suggest that AT1R activation results in translocation of RGS5 toward the plasma membrane, limiting AT1R-mediated vasoconstriction through its role in Gq/11 protein-dependent signaling.
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Affiliation(s)
- Kwangseok Hong
- From the Department of Medical Pharmacology and Physiology (K.H., M.L., G.A.M., M.A.H.) and Dalton Cardiovascular Research Center (K.H., Z.N., G.A.M., M.A.H.), University of Missouri, Columbia; and Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville (K.H.)
| | - Min Li
- From the Department of Medical Pharmacology and Physiology (K.H., M.L., G.A.M., M.A.H.) and Dalton Cardiovascular Research Center (K.H., Z.N., G.A.M., M.A.H.), University of Missouri, Columbia; and Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville (K.H.)
| | - Zahra Nourian
- From the Department of Medical Pharmacology and Physiology (K.H., M.L., G.A.M., M.A.H.) and Dalton Cardiovascular Research Center (K.H., Z.N., G.A.M., M.A.H.), University of Missouri, Columbia; and Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville (K.H.)
| | - Gerald A Meininger
- From the Department of Medical Pharmacology and Physiology (K.H., M.L., G.A.M., M.A.H.) and Dalton Cardiovascular Research Center (K.H., Z.N., G.A.M., M.A.H.), University of Missouri, Columbia; and Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville (K.H.)
| | - Michael A Hill
- From the Department of Medical Pharmacology and Physiology (K.H., M.L., G.A.M., M.A.H.) and Dalton Cardiovascular Research Center (K.H., Z.N., G.A.M., M.A.H.), University of Missouri, Columbia; and Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville (K.H.).
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23
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Ganss R. Maternal Metabolism and Vascular Adaptation in Pregnancy: The PPAR Link. Trends Endocrinol Metab 2017; 28:73-84. [PMID: 27789100 DOI: 10.1016/j.tem.2016.09.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 09/22/2016] [Accepted: 09/23/2016] [Indexed: 12/17/2022]
Abstract
Current therapies for pregnancy-related hypertension and its complications remain inadequate, although an increasing role for maternal susceptibility is becoming evident. Systemic vascular dysfunction in response to imbalances in angiogenic, inflammatory, and constricting factors is implicated in the pathogenesis of gestational hypertension, and growing evidence now links these factors with maternal metabolism. In particular, the crucial role of peroxisome proliferator-activated receptors (PPARs) in maternal vascular adaptation provides further insights into how obesity and gestational diabetes may be linked to pregnancy-induced hypertension and preeclampsia. This is especially important given the rapidly growing prevalence of obesity during pregnancy, and highlights a new approach to treat pregnancy-related hypertension and its complications.
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Affiliation(s)
- Ruth Ganss
- Vascular Biology and Stromal Targeting, Harry Perkins Institute of Medical Research, The University of Western Australia, Centre for Medical Research, Nedlands, Western Australia 6009, Australia.
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24
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Lin Y, Bircsak KM, Gorczyca L, Wen X, Aleksunes LM. Regulation of the placental BCRP transporter by PPAR gamma. J Biochem Mol Toxicol 2016; 31. [PMID: 27879033 DOI: 10.1002/jbt.21880] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 10/13/2016] [Accepted: 10/20/2016] [Indexed: 12/27/2022]
Abstract
Identifying regulators of placental breast cancer resistance protein (BCRP) expression is critical as downregulation of this transporter may increase exposure of the fetus to xenobiotics. Here, we sought to test whether the nuclear receptor peroxisome proliferator-activated receptor γ (PPARγ) regulates BCRP expression in the placenta. To test this, human BeWo placental choriocarcinoma cells were cultured with the PPARγ agonist rosiglitazone or the PPARγ antagonist T0070907 for 24 h. Messenger RNA (mRNA) expression of syncytialization markers, GCM1 and hCGβ, as well as BCRP increased with PPARγ agonist treatment. Conversely, BCRP mRNA and protein expression decreased 30%-50% with PPARγ antagonist treatment. Rosiglitazone enhanced BCRP protein expression and transport activity, resulting in a 20% greater efflux of the substrate Hoechst 33342 compared with control cells. These results suggest that PPARγ can upregulate BCRP expression in the placenta, which may be important in understanding mechanisms that protect the fetus from xenobiotic exposure during development.
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Affiliation(s)
- Yixin Lin
- Rutgers University Ernest Mario School of Pharmacy, Department of Pharmacology and Toxicology, Piscataway, NJ, 08854, USA
| | - Kristin M Bircsak
- Rutgers University Ernest Mario School of Pharmacy, Department of Pharmacology and Toxicology, Piscataway, NJ, 08854, USA
| | - Ludwik Gorczyca
- Rutgers University Ernest Mario School of Pharmacy, Department of Pharmacology and Toxicology, Piscataway, NJ, 08854, USA
| | - Xia Wen
- Rutgers University Ernest Mario School of Pharmacy, Department of Pharmacology and Toxicology, Piscataway, NJ, 08854, USA
| | - Lauren M Aleksunes
- Rutgers University Ernest Mario School of Pharmacy, Department of Pharmacology and Toxicology, Piscataway, NJ, 08854, USA.,Environmental and Occupational Health Sciences Institute, Piscataway, NJ, 08854, USA
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25
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Toral M, Romero M, Pérez-Vizcaíno F, Duarte J, Jiménez R. Antihypertensive effects of peroxisome proliferator-activated receptor-β/δ activation. Am J Physiol Heart Circ Physiol 2016; 312:H189-H200. [PMID: 27881385 DOI: 10.1152/ajpheart.00155.2016] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 09/12/2016] [Accepted: 11/21/2016] [Indexed: 01/16/2023]
Abstract
Peroxisome proliferator-activated receptors (PPARs) are members of the nuclear hormone receptor superfamily of ligand-activated transcription factors, which is composed of three members encoded by distinct genes: PPARα, PPARβ/δ, and PPARγ. The biological actions of PPARα and PPARγ and their potential as a cardiovascular therapeutic target have been extensively reviewed, whereas the biological actions of PPARβ/δ and its effectiveness as a therapeutic target in the treatment of hypertension remain less investigated. Preclinical studies suggest that pharmacological PPARβ/δ activation induces antihypertensive effects in direct [spontaneously hypertensive rat (SHR), ANG II, and DOCA-salt] and indirect (dyslipemic and gestational) models of hypertension, associated with end-organ damage protection. This review summarizes mechanistic insights into the antihypertensive effects of PPARβ/δ activators, including molecular and functional mechanisms. Pharmacological PPARβ/δ activation induces genomic actions including the increase of regulators of G protein-coupled signaling (RGS), acute nongenomic vasodilator effects, as well as the ability to improve the endothelial dysfunction, reduce vascular inflammation, vasoconstrictor responses, and sympathetic outflow from central nervous system. Evidence from clinical trials is also examined. These preclinical and clinical outcomes of PPARβ/δ ligands may provide a basis for the development of therapies in combating hypertension.
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Affiliation(s)
- Marta Toral
- Department of Pharmacology, School of Pharmacy, University of Granada, Granada, Spain
| | - Miguel Romero
- Department of Pharmacology, School of Pharmacy, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria de Granada, ibs.GRANADA, Granada, Spain
| | - Francisco Pérez-Vizcaíno
- Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain.,Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid. Spain; and.,Ciber Enfermedades Respiratorias (Ciberes). Madrid. Spain
| | - Juan Duarte
- Department of Pharmacology, School of Pharmacy, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria de Granada, ibs.GRANADA, Granada, Spain
| | - Rosario Jiménez
- Department of Pharmacology, School of Pharmacy, University of Granada, Granada, Spain; .,Instituto de Investigación Biosanitaria de Granada, ibs.GRANADA, Granada, Spain
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26
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Cunningham MW, Williams JM, Amaral L, Usry N, Wallukat G, Dechend R, LaMarca B. Agonistic Autoantibodies to the Angiotensin II Type 1 Receptor Enhance Angiotensin II-Induced Renal Vascular Sensitivity and Reduce Renal Function During Pregnancy. Hypertension 2016; 68:1308-1313. [PMID: 27698062 DOI: 10.1161/hypertensionaha.116.07971] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 08/23/2016] [Indexed: 01/26/2023]
Abstract
Preeclamptic women produce agonistic autoantibodies to the angiotensin II type 1 receptor (AT1-AA) and exhibit increased blood pressure (mean arterial pressure), vascular sensitivity to angiotensin II (ANG II), and display a decrease in renal function. The objective of this study was to examine the renal hemodynamic changes during pregnancy in the presence of AT1-AAs with or without a slow pressor dose of ANG II. In this study, mean arterial pressure was elevated in all pregnant rats treated with ANG II with or without AT1-AA. Glomerular filtration rate was reduced from 1.90±0.16 mL/min in normal pregnant (NP) to 1.20±0.08 in ANG II+AT1-AA rats. Renal blood flow was decreased in ANG II+AT1-AA versus NP rats to 7.4±1.09 versus 15.4±1.75 mL/min. Renal vascular resistance was drastically increased between ANG II+AT1-AA versus NP rats (18.4±2.91 versus 6.4±0.77 mm Hg/mL per minute). Isoprostane excretion was increased by 3.5-fold in ANG II+AT1-AA versus NP (1160±321 versus 323±52 pg/mL). In conclusion, ANG II and AT1-AA together significantly decrease glomerular filtration rate by 37% and renal blood flow by 50% and caused a 3-fold increase in renal vascular resistance and isoprostane levels versus NP rats. These data indicate the importance of AT1-AAs to enhance ANG II-induced renal vasoconstriction and reduce renal function as mechanisms to cause hypertension as observed during preeclampsia.
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Affiliation(s)
- Mark W Cunningham
- From the Departments of Pharmacology and Toxicology (M.W.C., J.M.W., L.A., N.U., B.L.M.) and Obstetrics and Gynecology (B.L.M.), University of Mississippi Medical Center, Jackson; Experimental and Clinical Research Center, Charité Campus Buch, Max-Delbrück Center for Molecular Medicine, Berlin, Germany (G.W.); and Experimental and Clinical Research Center, HELIOS Clinic, Berlin, Germany (R.D.)
| | - Jan M Williams
- From the Departments of Pharmacology and Toxicology (M.W.C., J.M.W., L.A., N.U., B.L.M.) and Obstetrics and Gynecology (B.L.M.), University of Mississippi Medical Center, Jackson; Experimental and Clinical Research Center, Charité Campus Buch, Max-Delbrück Center for Molecular Medicine, Berlin, Germany (G.W.); and Experimental and Clinical Research Center, HELIOS Clinic, Berlin, Germany (R.D.)
| | - Lorena Amaral
- From the Departments of Pharmacology and Toxicology (M.W.C., J.M.W., L.A., N.U., B.L.M.) and Obstetrics and Gynecology (B.L.M.), University of Mississippi Medical Center, Jackson; Experimental and Clinical Research Center, Charité Campus Buch, Max-Delbrück Center for Molecular Medicine, Berlin, Germany (G.W.); and Experimental and Clinical Research Center, HELIOS Clinic, Berlin, Germany (R.D.)
| | - Nathan Usry
- From the Departments of Pharmacology and Toxicology (M.W.C., J.M.W., L.A., N.U., B.L.M.) and Obstetrics and Gynecology (B.L.M.), University of Mississippi Medical Center, Jackson; Experimental and Clinical Research Center, Charité Campus Buch, Max-Delbrück Center for Molecular Medicine, Berlin, Germany (G.W.); and Experimental and Clinical Research Center, HELIOS Clinic, Berlin, Germany (R.D.)
| | - Gerd Wallukat
- From the Departments of Pharmacology and Toxicology (M.W.C., J.M.W., L.A., N.U., B.L.M.) and Obstetrics and Gynecology (B.L.M.), University of Mississippi Medical Center, Jackson; Experimental and Clinical Research Center, Charité Campus Buch, Max-Delbrück Center for Molecular Medicine, Berlin, Germany (G.W.); and Experimental and Clinical Research Center, HELIOS Clinic, Berlin, Germany (R.D.)
| | - Ralf Dechend
- From the Departments of Pharmacology and Toxicology (M.W.C., J.M.W., L.A., N.U., B.L.M.) and Obstetrics and Gynecology (B.L.M.), University of Mississippi Medical Center, Jackson; Experimental and Clinical Research Center, Charité Campus Buch, Max-Delbrück Center for Molecular Medicine, Berlin, Germany (G.W.); and Experimental and Clinical Research Center, HELIOS Clinic, Berlin, Germany (R.D.)
| | - Babbette LaMarca
- From the Departments of Pharmacology and Toxicology (M.W.C., J.M.W., L.A., N.U., B.L.M.) and Obstetrics and Gynecology (B.L.M.), University of Mississippi Medical Center, Jackson; Experimental and Clinical Research Center, Charité Campus Buch, Max-Delbrück Center for Molecular Medicine, Berlin, Germany (G.W.); and Experimental and Clinical Research Center, HELIOS Clinic, Berlin, Germany (R.D.).
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27
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Yan Q, Wang H, Liu R, Jiang L, Liu J, Wang L, Guo Y. Influence of random urine albumin-creatinine ratio of pregnant women with hypertension during the gestation period on perinatal outcome. Exp Ther Med 2016; 12:2521-2526. [PMID: 27703509 PMCID: PMC5038915 DOI: 10.3892/etm.2016.3620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 08/19/2016] [Indexed: 11/15/2022] Open
Abstract
The aim of the present study was to investigate the influence of the random urine albumin-creatinine ratio (ACR) of pregnant women with hypertension during the gestation period on perinatal outcome. A total of 6,758 pregnant women with pregnancy-induced hypertension and proteinuria were randomly selected between September, 2009 and June, 2015 for the study. Kidney function, blood pressure, history of gravidity and parity, embryo number and the birth weight of the participants was determined. Logistic regression and paired data correlation analyses were carried out with kidney function, blood pressure, history of gravidity and parity, embryo number, birth weight, maternal age, labor presentation and other risk factors as the independent variables and the newborn APGAR score as the dependent variable. The results showed that random urine ACR was increased and negatively correlated with the APGAR score (OR=−0.095, P=0.017). In conclusion, the increased random urine ACR can influence the postpartum outcome. Early intervention of women of childbearing age in early pregnancy or before pregnancy can minimize the adverse complications of infants and mothers such as pregnancy hypertension syndrome, and improve the outcome of the pregnancy.
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28
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Jie L, Owens EA, Plante LA, Fang Z, Rensing DT, Moeller KD, Osei-Owusu P. RGS2 squelches vascular Gi/o and Gq signaling to modulate myogenic tone and promote uterine blood flow. Physiol Rep 2016; 4:4/2/e12692. [PMID: 26811058 PMCID: PMC4760385 DOI: 10.14814/phy2.12692] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Uterine artery blood flow (UABF) is critical to maintaining uterine perfusion in nonpregnant states and for uteroplacental delivery of nutrients and oxygen to the fetus during pregnancy. Impaired UABF is implicated in infertility and several pregnancy complications including fetal growth restriction, small for gestational age, and preeclampsia. The etiology of abnormal UABF is not known. Here, we determined whether deficiency or loss of RGS2, a GTPase-activating protein for Gq/11 and Gi/o class G proteins, affects UABF in nonpregnant mice. We used Doppler ultrasonography to assess UABF in wild type (WT), Rgs2 heterozygous (Rgs2+/-), and homozygous knockout (Rgs2-/-) mice. Video microscopy was used for ex vivo examination of uterine artery myogenic tone and fura-2 imaging for in vitro assessment of internal stores Ca(2+) release. We found that baseline UABF velocity was markedly decreased while impedance measured as resistive index (WT = 0.58 ± 0.04 vs. Rgs2-/- = 0.71 ± 0.03, P < 0.01) and pulsatile index (WT = 0.90 ± 0.06 vs. Rgs2-/- = 1.25 ± 0.11, P < 0.01) was increased in Rgs2-/- mice. Uterine artery tone was augmented in Rgs2+/- and Rgs2-/- mice, which was normalized to WT levels following Gi/o and Gq inactivation. Conversely, blockade of ryanodine receptors increased WT myogenic tone to RGS2 mutant levels. The data together indicate that RGS2 deficiency decreases UABF by increasing myogenic tone at least partly through prolonged G protein activation. Mutations that decrease vascular RGS2 expression may be a predisposition to decreased uterine blood flow. Targeting G protein signaling therefore might improve uterine and uteroplacental underperfusion disorders.
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Affiliation(s)
- Li Jie
- Department of Pharmacology & Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu, China
| | - Elizabeth A Owens
- Department of Pharmacology & Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Lauren A Plante
- Department of Obstetrics & Gynecology, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Zhuyuan Fang
- Jiangsu Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu, China
| | - Derek T Rensing
- Department of Chemistry, Washington University, St. Louis, Missouri
| | - Kevin D Moeller
- Department of Chemistry, Washington University, St. Louis, Missouri
| | - Patrick Osei-Owusu
- Department of Pharmacology & Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania
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29
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Burke SD, Zsengellér ZK, Khankin EV, Lo AS, Rajakumar A, DuPont JJ, McCurley A, Moss ME, Zhang D, Clark CD, Wang A, Seely EW, Kang PM, Stillman IE, Jaffe IZ, Karumanchi SA. Soluble fms-like tyrosine kinase 1 promotes angiotensin II sensitivity in preeclampsia. J Clin Invest 2016; 126:2561-74. [PMID: 27270170 DOI: 10.1172/jci83918] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 04/07/2016] [Indexed: 12/11/2022] Open
Abstract
Preeclampsia is a hypertensive disorder of pregnancy in which patients develop profound sensitivity to vasopressors, such as angiotensin II, and is associated with substantial morbidity for the mother and fetus. Enhanced vasoconstrictor sensitivity and elevations in soluble fms-like tyrosine kinase 1 (sFLT1), a circulating antiangiogenic protein, precede clinical signs and symptoms of preeclampsia. Here, we report that overexpression of sFlt1 in pregnant mice induced angiotensin II sensitivity and hypertension by impairing endothelial nitric oxide synthase (eNOS) phosphorylation and promoting oxidative stress in the vasculature. Administration of the NOS inhibitor l-NAME to pregnant mice recapitulated the angiotensin sensitivity and oxidative stress observed with sFlt1 overexpression. Sildenafil, an FDA-approved phosphodiesterase 5 inhibitor that enhances NO signaling, reversed sFlt1-induced hypertension and angiotensin II sensitivity in the preeclampsia mouse model. Sildenafil treatment also improved uterine blood flow, decreased uterine vascular resistance, and improved fetal weights in comparison with untreated sFlt1-expressing mice. Finally, sFLT1 protein expression inversely correlated with reductions in eNOS phosphorylation in placental tissue of human preeclampsia patients. These data support the concept that endothelial dysfunction due to high circulating sFLT1 may be the primary event leading to enhanced vasoconstrictor sensitivity that is characteristic of preeclampsia and suggest that targeting sFLT1-induced pathways may be an avenue for treating preeclampsia and improving fetal outcomes.
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30
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Marshall SA, Leo CH, Senadheera SN, Girling JE, Tare M, Parry LJ. Relaxin deficiency attenuates pregnancy-induced adaptation of the mesenteric artery to angiotensin II in mice. Am J Physiol Regul Integr Comp Physiol 2016; 310:R847-57. [DOI: 10.1152/ajpregu.00506.2015] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 02/22/2016] [Indexed: 12/11/2022]
Abstract
Pregnancy is associated with reduced peripheral vascular resistance, underpinned by changes in endothelial and smooth muscle function. Failure of the maternal vasculature to adapt correctly leads to serious pregnancy complications, such as preeclampsia. The peptide hormone relaxin regulates the maternal renal vasculature during pregnancy; however, little is known about its effects in other vascular beds. This study tested the hypothesis that functional adaptation of the mesenteric and uterine arteries during pregnancy will be compromised in relaxin-deficient ( Rln−/−) mice. Smooth muscle and endothelial reactivity were examined in small mesenteric and uterine arteries of nonpregnant (estrus) and late-pregnant ( day 17.5) wild-type ( Rln+/+) and Rln−/− mice using wire myography. Pregnancy per se was associated with significant reductions in contraction to phenylephrine, endothelin-1, and ANG II in small mesenteric arteries, while sensitivity to endothelin-1 was reduced in uterine arteries of Rln+/+ mice. The normal pregnancy-associated attenuation of ANG II-mediated vasoconstriction in mesenteric arteries did not occur in Rln−/− mice. This adaptive failure was endothelium-independent and did not result from altered expression of ANG II receptors or regulator of G protein signaling 5 ( Rgs5) or increases in reactive oxygen species generation. Inhibition of nitric oxide synthase with l-NAME enhanced ANG II-mediated contraction in mesenteric arteries of both genotypes, whereas blockade of prostanoid production with indomethacin only increased ANG II-induced contraction in arteries of pregnant Rln+/+ mice. In conclusion, relaxin deficiency prevents the normal pregnancy-induced attenuation of ANG II-mediated vasoconstriction in small mesenteric arteries. This is associated with reduced smooth muscle-derived vasodilator prostanoids.
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Affiliation(s)
- Sarah A. Marshall
- School of BioSciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Chen Huei Leo
- School of BioSciences, The University of Melbourne, Parkville, Victoria, Australia
| | | | - Jane E. Girling
- Gynaecology Research Centre, Department of Obstetrics and Gynaecology, The University of Melbourne and Royal Women's Hospital, Parkville, Victoria, Australia; and
| | - Marianne Tare
- Department of Physiology, Monash University, Victoria, Australia; and
- School of Rural Health, Monash University, Victoria, Australia
| | - Laura J. Parry
- School of BioSciences, The University of Melbourne, Parkville, Victoria, Australia
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Romero M, Jiménez R, Toral M, León-Gómez E, Gómez-Gúzman M, Sánchez M, Zarzuelo MJ, Rodríguez-Gómez I, Rath G, Tamargo J, Pérez-Vizcaíno F, Dessy C, Duarte J. Vascular and Central Activation of Peroxisome Proliferator-Activated Receptor-β Attenuates Angiotensin II-Induced Hypertension: Role of RGS-5. J Pharmacol Exp Ther 2016; 358:151-63. [PMID: 27189971 DOI: 10.1124/jpet.116.233106] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 04/25/2016] [Indexed: 11/22/2022] Open
Abstract
Activation of peroxisome proliferator-activated receptor-β/δ (PPARβ) lowers blood pressure in genetic and mineralocorticoid-induced hypertension. Regulator of G-protein-coupled receptor signaling 5 (RGS5) protein, which interferes in angiotensin II (AngII) signaling, is a target gene to PPARβ The aim of the present study was to examine whether PPARβ activation in resistance arteries and brain tissues prevents the elevated blood pressure in AngII-induced hypertension and evaluate the role of RGS5 in this effect. C57BL/6J male mice were divided into five groups (control mice, PPARβ agonist [4-[[[2-[3-Fluoro-4-(trifluoromethyl)phenyl]-4-methyl-5-thiazolyl]methyl]thio]-2-methylphenoxy]acetic acid (GW0742)-treated mice AngII-infused mice, GW0742-treated AngII-infused mice, and AngII-infused mice treated with GW0742 plus PPARβ antagonist 3-[[[2-Methoxy-4-(phenylamino)phenyl]amino]sulfonyl]-2-thiophenecarboxylic acid methyl ester (GSK0660)) and were followed for 3 weeks. GW0742 prevented the increase in both arterial blood pressure and plasma noradrenaline levels and the higher reduction of blood pressure after ganglionic blockade, whereas it reduced the mesenteric arterial remodeling and the hyper-responsiveness to vasoconstrictors (AngII and endothelin-1) in AngII-infused mice. These effects were accompanied by an inhibition of NADPH oxidase expression and activity in the brain. Gene expression profiling revealed a marked loss of brainstem and vascular RGS5 in AngII-infused mice, which was restored by GW0742. GW0742-induced effects were abolished by GSK0660. Small interfering RNA targeting RGS5 caused augmented contractile response to AngII in resistance mesenteric arteries and blunted the inhibitory effect of GW0742 on this response. In conclusion, GW0742 exerted antihypertensive effects, restoring sympathetic tone and vascular structure and function in AngII-infused mice by PPARβ activation in brain and vessels inhibiting AngII signaling as a result of RGS5 upregulation.
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Affiliation(s)
- Miguel Romero
- Department of Pharmacology, School of Pharmacy (M.R., R.J., M.T., M.G.-G., M.S., M.J.Z., J.D.), and Department of Physiology (I.R.-G.); University of Granada, Granada, Spain; Center for Biomedical Research, Granada, Spain (R.J., J.D.); Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, School of Medicine, University of Louvain, Brussels, Belgium (E.L.-G., G.R., C.D.); Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain (J.T., F.P.-V.); and Ciber Enfermedades Respiratorias (Ciberes) and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain (F.P.-V.)
| | - Rosario Jiménez
- Department of Pharmacology, School of Pharmacy (M.R., R.J., M.T., M.G.-G., M.S., M.J.Z., J.D.), and Department of Physiology (I.R.-G.); University of Granada, Granada, Spain; Center for Biomedical Research, Granada, Spain (R.J., J.D.); Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, School of Medicine, University of Louvain, Brussels, Belgium (E.L.-G., G.R., C.D.); Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain (J.T., F.P.-V.); and Ciber Enfermedades Respiratorias (Ciberes) and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain (F.P.-V.)
| | - Marta Toral
- Department of Pharmacology, School of Pharmacy (M.R., R.J., M.T., M.G.-G., M.S., M.J.Z., J.D.), and Department of Physiology (I.R.-G.); University of Granada, Granada, Spain; Center for Biomedical Research, Granada, Spain (R.J., J.D.); Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, School of Medicine, University of Louvain, Brussels, Belgium (E.L.-G., G.R., C.D.); Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain (J.T., F.P.-V.); and Ciber Enfermedades Respiratorias (Ciberes) and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain (F.P.-V.)
| | - Elvira León-Gómez
- Department of Pharmacology, School of Pharmacy (M.R., R.J., M.T., M.G.-G., M.S., M.J.Z., J.D.), and Department of Physiology (I.R.-G.); University of Granada, Granada, Spain; Center for Biomedical Research, Granada, Spain (R.J., J.D.); Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, School of Medicine, University of Louvain, Brussels, Belgium (E.L.-G., G.R., C.D.); Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain (J.T., F.P.-V.); and Ciber Enfermedades Respiratorias (Ciberes) and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain (F.P.-V.)
| | - Manuel Gómez-Gúzman
- Department of Pharmacology, School of Pharmacy (M.R., R.J., M.T., M.G.-G., M.S., M.J.Z., J.D.), and Department of Physiology (I.R.-G.); University of Granada, Granada, Spain; Center for Biomedical Research, Granada, Spain (R.J., J.D.); Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, School of Medicine, University of Louvain, Brussels, Belgium (E.L.-G., G.R., C.D.); Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain (J.T., F.P.-V.); and Ciber Enfermedades Respiratorias (Ciberes) and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain (F.P.-V.)
| | - Manuel Sánchez
- Department of Pharmacology, School of Pharmacy (M.R., R.J., M.T., M.G.-G., M.S., M.J.Z., J.D.), and Department of Physiology (I.R.-G.); University of Granada, Granada, Spain; Center for Biomedical Research, Granada, Spain (R.J., J.D.); Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, School of Medicine, University of Louvain, Brussels, Belgium (E.L.-G., G.R., C.D.); Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain (J.T., F.P.-V.); and Ciber Enfermedades Respiratorias (Ciberes) and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain (F.P.-V.)
| | - María José Zarzuelo
- Department of Pharmacology, School of Pharmacy (M.R., R.J., M.T., M.G.-G., M.S., M.J.Z., J.D.), and Department of Physiology (I.R.-G.); University of Granada, Granada, Spain; Center for Biomedical Research, Granada, Spain (R.J., J.D.); Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, School of Medicine, University of Louvain, Brussels, Belgium (E.L.-G., G.R., C.D.); Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain (J.T., F.P.-V.); and Ciber Enfermedades Respiratorias (Ciberes) and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain (F.P.-V.)
| | - Isabel Rodríguez-Gómez
- Department of Pharmacology, School of Pharmacy (M.R., R.J., M.T., M.G.-G., M.S., M.J.Z., J.D.), and Department of Physiology (I.R.-G.); University of Granada, Granada, Spain; Center for Biomedical Research, Granada, Spain (R.J., J.D.); Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, School of Medicine, University of Louvain, Brussels, Belgium (E.L.-G., G.R., C.D.); Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain (J.T., F.P.-V.); and Ciber Enfermedades Respiratorias (Ciberes) and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain (F.P.-V.)
| | - Geraldine Rath
- Department of Pharmacology, School of Pharmacy (M.R., R.J., M.T., M.G.-G., M.S., M.J.Z., J.D.), and Department of Physiology (I.R.-G.); University of Granada, Granada, Spain; Center for Biomedical Research, Granada, Spain (R.J., J.D.); Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, School of Medicine, University of Louvain, Brussels, Belgium (E.L.-G., G.R., C.D.); Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain (J.T., F.P.-V.); and Ciber Enfermedades Respiratorias (Ciberes) and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain (F.P.-V.)
| | - Juan Tamargo
- Department of Pharmacology, School of Pharmacy (M.R., R.J., M.T., M.G.-G., M.S., M.J.Z., J.D.), and Department of Physiology (I.R.-G.); University of Granada, Granada, Spain; Center for Biomedical Research, Granada, Spain (R.J., J.D.); Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, School of Medicine, University of Louvain, Brussels, Belgium (E.L.-G., G.R., C.D.); Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain (J.T., F.P.-V.); and Ciber Enfermedades Respiratorias (Ciberes) and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain (F.P.-V.)
| | - Francisco Pérez-Vizcaíno
- Department of Pharmacology, School of Pharmacy (M.R., R.J., M.T., M.G.-G., M.S., M.J.Z., J.D.), and Department of Physiology (I.R.-G.); University of Granada, Granada, Spain; Center for Biomedical Research, Granada, Spain (R.J., J.D.); Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, School of Medicine, University of Louvain, Brussels, Belgium (E.L.-G., G.R., C.D.); Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain (J.T., F.P.-V.); and Ciber Enfermedades Respiratorias (Ciberes) and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain (F.P.-V.)
| | - Chantal Dessy
- Department of Pharmacology, School of Pharmacy (M.R., R.J., M.T., M.G.-G., M.S., M.J.Z., J.D.), and Department of Physiology (I.R.-G.); University of Granada, Granada, Spain; Center for Biomedical Research, Granada, Spain (R.J., J.D.); Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, School of Medicine, University of Louvain, Brussels, Belgium (E.L.-G., G.R., C.D.); Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain (J.T., F.P.-V.); and Ciber Enfermedades Respiratorias (Ciberes) and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain (F.P.-V.)
| | - Juan Duarte
- Department of Pharmacology, School of Pharmacy (M.R., R.J., M.T., M.G.-G., M.S., M.J.Z., J.D.), and Department of Physiology (I.R.-G.); University of Granada, Granada, Spain; Center for Biomedical Research, Granada, Spain (R.J., J.D.); Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, School of Medicine, University of Louvain, Brussels, Belgium (E.L.-G., G.R., C.D.); Department of Pharmacology, School of Medicine, University Complutense of Madrid, Madrid, Spain (J.T., F.P.-V.); and Ciber Enfermedades Respiratorias (Ciberes) and Instituto de Investigación Sanitaria Gregorio Marañón (IISGM), Madrid, Spain (F.P.-V.)
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Ketsawatsomkron P, Keen HL, Davis DR, Lu KT, Stump M, De Silva TM, Hilzendeger AM, Grobe JL, Faraci FM, Sigmund CD. Protective Role for Tissue Inhibitor of Metalloproteinase-4, a Novel Peroxisome Proliferator-Activated Receptor-γ Target Gene, in Smooth Muscle in Deoxycorticosterone Acetate-Salt Hypertension. Hypertension 2016; 67:214-22. [PMID: 26597823 PMCID: PMC4679422 DOI: 10.1161/hypertensionaha.115.06391] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 10/18/2015] [Indexed: 11/16/2022]
Abstract
Loss of peroxisome proliferator-activated receptor-γ (PPARγ) function causes hypertension, whereas its activation lowers blood pressure. Evidence suggests that these effects may be attributable to PPARγ activity in the vasculature. However, the specific transcriptional targets of PPARγ in vessels remain largely unidentified. In this study, we examined the role of smooth muscle PPARγ during salt-sensitive hypertension and investigated its transcriptional targets and functional effect. Transgenic mice expressing dominant-negative PPARγ (S-P467L) in smooth muscle cells were more prone to deoxycorticosterone acetate-salt-induced hypertension and mesenteric arterial dysfunction compared with nontransgenic controls. Despite similar morphometry at baseline, vascular remodeling in conduit and small arteries was enhanced in S-P467L after deoxycorticosterone acetate-salt treatment. Gene expression profiling in aorta and mesenteric arteries revealed significantly decreased expression of tissue inhibitor of metalloproteinase-4 (TIMP-4) in S-P467L. Expression of TIMP-4 was increased by deoxycorticosterone acetate-salt treatment, but this increase was ablated in S-P467L. Interference with PPARγ activity either by treatment with a PPARγ inhibitor, GW9662, or by expressing P467L PPARγ markedly suppressed TIMP-4 in primary smooth muscle cells. PPARγ binds to a PPAR response element (PPRE) in chromatin close to the TIMP-4 gene in smooth muscle cells, suggesting that TIMP-4 is a novel target of PPARγ. The interference with PPARγ and decrease in TIMP-4 were accompanied by an increase in total matrix metalloproteinase activity. PPARγ-mediated loss of TIMP-4 increased, whereas overexpression of TIMP-4 decreased smooth muscle cell migration in a scratch assay. Our findings highlight a protective mechanism induced by PPARγ in deoxycorticosterone acetate-salt treatment, establishing a novel mechanistic link between PPARγ and TIMP-4.
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Affiliation(s)
- Pimonrat Ketsawatsomkron
- From the Department of Pharmacology, Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City; and Iowa City Veterans Affairs Healthcare System, IA
| | - Henry L Keen
- From the Department of Pharmacology, Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City; and Iowa City Veterans Affairs Healthcare System, IA
| | - Deborah R Davis
- From the Department of Pharmacology, Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City; and Iowa City Veterans Affairs Healthcare System, IA
| | - Ko-Ting Lu
- From the Department of Pharmacology, Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City; and Iowa City Veterans Affairs Healthcare System, IA
| | - Madeliene Stump
- From the Department of Pharmacology, Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City; and Iowa City Veterans Affairs Healthcare System, IA
| | - T Michael De Silva
- From the Department of Pharmacology, Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City; and Iowa City Veterans Affairs Healthcare System, IA
| | - Aline M Hilzendeger
- From the Department of Pharmacology, Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City; and Iowa City Veterans Affairs Healthcare System, IA
| | - Justin L Grobe
- From the Department of Pharmacology, Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City; and Iowa City Veterans Affairs Healthcare System, IA
| | - Frank M Faraci
- From the Department of Pharmacology, Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City; and Iowa City Veterans Affairs Healthcare System, IA
| | - Curt D Sigmund
- From the Department of Pharmacology, Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City; and Iowa City Veterans Affairs Healthcare System, IA.
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Eda Gökdemir İ, Özdeğirmenci Ö, Elmas B, Sarikaya E, Tokmak A, Kazanci FH, Gök S, Erkaya S, Demircan K. Evaluation of ADAMTS12, ADAMTS16, ADAMTS18 and IL-33 serum levels in pre-eclampsia. J Matern Fetal Neonatal Med 2015; 29:2451-6. [PMID: 26382559 DOI: 10.3109/14767058.2015.1087497] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Pre-eclampsia is the result of impaired trophoblast invasion and spiral artery remodeling managed by inflammatory response in its etiology and physiopathology. The aim of this study was to compare serum molecules including IL-33, ADAMTS12, ADAMTS16 and ADAMTS18 levels between pre-eclampsia and control groups and to investigate the role of these molecules in pre-eclampsia. METHODS Forty-one women diagnosed as pre-eclampsia between 30 and 40 weeks of gestation and 41 non-complicated pregnant women were enrolled in this cross-sectional, case-control prospective study. ELISA method was used to determine IL-33, ADAMTS12, ADAMTS16 and ADAMTS18 levels within serums in two groups. RESULTS Serum ADAMTS12 and IL-33 levels were significantly lower in pre-eclampsia group (p < 0.001 and p: 0.028, respectively), however, in sub-group analysis, no significant difference was observed (p > 0.05). The cut-off value of ADAMTS12 levels to discriminate pre-eclampsia with %73.17 sensitivity and %92.68 specificity was 8.27 ng/ml while the cut-off value for IL-33 was 0.23 pg/ml with 82.93% sensitivity and 53.66% specificity. CONCLUSION Pre-eclampsia is associated with lower serum IL-33 and ADAMTS12 levels.
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Affiliation(s)
- İrem Eda Gökdemir
- a Department of Obstetrics and Gynecology , Zekai Tahir Burak Women's Health Education and Research Hospital , Ankara , Turkey
| | - Özlem Özdeğirmenci
- a Department of Obstetrics and Gynecology , Zekai Tahir Burak Women's Health Education and Research Hospital , Ankara , Turkey
| | - Burak Elmas
- a Department of Obstetrics and Gynecology , Zekai Tahir Burak Women's Health Education and Research Hospital , Ankara , Turkey
| | - Esma Sarikaya
- a Department of Obstetrics and Gynecology , Zekai Tahir Burak Women's Health Education and Research Hospital , Ankara , Turkey .,b Department of Obstetrics and Gynecology , Yıldırım Beyazıt University School of Medicine , Ankara , Turkey
| | - Aytekin Tokmak
- a Department of Obstetrics and Gynecology , Zekai Tahir Burak Women's Health Education and Research Hospital , Ankara , Turkey
| | | | | | - Salim Erkaya
- a Department of Obstetrics and Gynecology , Zekai Tahir Burak Women's Health Education and Research Hospital , Ankara , Turkey
| | - Kadir Demircan
- d Department of Medical Biology , Turgut Özal University School of Medicine , Ankara , Turkey
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