1
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Chavva H, Belcher AM, Brazeau DA, Rorabaugh BR. Prenatal Exposure to Methamphetamine Causes Vascular Dysfunction in Adult Male Rat Offspring. Front Cardiovasc Med 2022; 9:830983. [PMID: 35155639 PMCID: PMC8826446 DOI: 10.3389/fcvm.2022.830983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 01/04/2022] [Indexed: 11/22/2022] Open
Abstract
Methamphetamine use during pregnancy can have negative consequences on the offspring. However, most studies investigating the impact of prenatal exposure to methamphetamine have focused on behavioral and neurological outcomes. Relatively little is known regarding the impact of prenatal methamphetamine on the adult cardiovascular system. This study investigated the impact of chronic fetal exposure to methamphetamine on vascular function in adult offspring. Pregnant female rats received daily saline or methamphetamine (5 mg/kg) injections starting on gestational day 1 and continuing until the pups were born. Vascular function was assessed in 5 month old offspring. Prenatal methamphetamine significantly decreased both the efficacy and potency of acetylcholine-induced relaxation in isolated male (but not female) aortas when perivascular adipose tissue (PVAT) remained intact. However, prenatal methamphetamine had no impact on acetylcholine-induced relaxation when PVAT was removed. Nitroprusside-induced relaxation of the aorta was unaffected by prenatal methamphetamine. Angiotensin II-induced contractile responses were significantly potentiated in male (but not female) aortas regardless of the presence of PVAT. This effect was reversed by L-nitro arginine methyl ester (L-NAME). Serotonin- and phenylephrine-induced contraction were unaffected by prenatal methamphetamine. Prenatal methamphetamine had no impact on acetylcholine-induced relaxation of third order mesenteric arteries and no effect on basal blood pressure. These data provide evidence that prenatal exposure to methamphetamine sex-dependently alters vasomotor function in the vasculature and may increase the risk of developing vascular disorders later in adult life.
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Affiliation(s)
- Hasitha Chavva
- Department of Pharmaceutical Sciences, Marshall University School of Pharmacy, Huntington, WV, United States
| | - Adam M Belcher
- Department of Pharmaceutical Sciences, Marshall University School of Pharmacy, Huntington, WV, United States
| | - Daniel A Brazeau
- Department of Pharmaceutical Sciences, Marshall University School of Pharmacy, Huntington, WV, United States.,Department of Biomedical Sciences, Marshall University School of Medicine, Huntington, WV, United States
| | - Boyd R Rorabaugh
- Department of Pharmaceutical Sciences, Marshall University School of Pharmacy, Huntington, WV, United States.,Department of Biomedical Sciences, Marshall University School of Medicine, Huntington, WV, United States
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2
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Bastianini S, Lo Martire V, Alvente S, Berteotti C, Matteoli G, Rullo L, Stamatakos S, Silvani A, Candeletti S, Romualdi P, Cohen G, Zoccoli G. Early-life nicotine or cotinine exposure produces long-lasting sleep alterations and downregulation of hippocampal corticosteroid receptors in adult mice. Sci Rep 2021; 11:23897. [PMID: 34903845 PMCID: PMC8668915 DOI: 10.1038/s41598-021-03468-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 11/30/2021] [Indexed: 11/24/2022] Open
Abstract
Early-life exposure to environmental toxins like tobacco can permanently re-program body structure and function. Here, we investigated the long-term effects on mouse adult sleep phenotype exerted by early-life exposure to nicotine or to its principal metabolite, cotinine. Moreover, we investigated whether these effects occurred together with a reprogramming of the activity of the hippocampus, a key structure to coordinate the hormonal stress response. Adult male mice born from dams subjected to nicotine (NIC), cotinine (COT) or vehicle (CTRL) treatment in drinking water were implanted with electrodes for sleep recordings. NIC and COT mice spent significantly more time awake than CTRL mice at the transition between the rest (light) and the activity (dark) period. NIC and COT mice showed hippocampal glucocorticoid receptor (GR) downregulation compared to CTRL mice, and NIC mice also showed hippocampal mineralocorticoid receptor downregulation. Hippocampal GR expression significantly and inversely correlated with the amount of wakefulness at the light-to-dark transition, while no changes in DNA methylation were found. We demonstrated that early-life exposure to nicotine (and cotinine) concomitantly entails long-lasting reprogramming of hippocampal activity and sleep phenotype suggesting that the adult sleep phenotype may be modulated by events that occurred during that critical period of life.
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Affiliation(s)
- Stefano Bastianini
- grid.6292.f0000 0004 1757 1758PRISM Lab, Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, Piazza di Porta San Donato 2, 40126 Bologna, Italy
| | - Viviana Lo Martire
- grid.6292.f0000 0004 1757 1758PRISM Lab, Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, Piazza di Porta San Donato 2, 40126 Bologna, Italy
| | - Sara Alvente
- grid.6292.f0000 0004 1757 1758PRISM Lab, Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, Piazza di Porta San Donato 2, 40126 Bologna, Italy
| | - Chiara Berteotti
- grid.6292.f0000 0004 1757 1758PRISM Lab, Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, Piazza di Porta San Donato 2, 40126 Bologna, Italy
| | - Gabriele Matteoli
- grid.6292.f0000 0004 1757 1758PRISM Lab, Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, Piazza di Porta San Donato 2, 40126 Bologna, Italy
| | - Laura Rullo
- grid.6292.f0000 0004 1757 1758Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Serena Stamatakos
- grid.6292.f0000 0004 1757 1758Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Alessandro Silvani
- grid.6292.f0000 0004 1757 1758PRISM Lab, Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, Piazza di Porta San Donato 2, 40126 Bologna, Italy
| | - Sanzio Candeletti
- grid.6292.f0000 0004 1757 1758Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Patrizia Romualdi
- grid.6292.f0000 0004 1757 1758Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Gary Cohen
- grid.4714.60000 0004 1937 0626Department of Women and Child Health, Karolinska Institutet, Stockholm, Sweden ,grid.412703.30000 0004 0587 9093Centre for Sleep Health and Research, Sleep Investigation Laboratory, Royal North Shore Hospital, Sydney, Australia
| | - Giovanna Zoccoli
- PRISM Lab, Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, Piazza di Porta San Donato 2, 40126, Bologna, Italy.
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3
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Rorabaugh BR. Does Prenatal Exposure to CNS Stimulants Increase the Risk of Cardiovascular Disease in Adult Offspring? Front Cardiovasc Med 2021; 8:652634. [PMID: 33748200 PMCID: PMC7969998 DOI: 10.3389/fcvm.2021.652634] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 02/15/2021] [Indexed: 12/11/2022] Open
Abstract
Prenatal exposure to an adverse uterine environment can have long lasting effects on adult offspring through DNA methylation, histone acetylation, and other epigenetic effects that alter gene expression and physiology. It is well-known that consumption of CNS stimulants such as caffeine, nicotine, amphetamines, and cocaine during pregnancy can adversely impact the offspring. However, most work in this area has focused on neurological and behavioral outcomes and has been limited to assessments in young offspring. The impact of prenatal exposure to these agents on the adult cardiovascular system has received relatively little attention. Evidence from both animal and human studies indicate that exposure to CNS stimulants during the gestational period can negatively impact the adult heart and vasculature, potentially leading to cardiovascular diseases later in life. This review discusses our current understanding of the impact of prenatal exposure to cocaine, methamphetamine, nicotine, and caffeine on the adult cardiovascular system.
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Affiliation(s)
- Boyd R Rorabaugh
- Department of Pharmaceutical Science, Marshall University School of Pharmacy, Huntington, WV, United States
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4
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Barra NG, VanDuzer TA, Holloway AC, Hardy DB. Maternal Nicotine Exposure Leads to Augmented Expression of the Antioxidant Adipose Tissue Triglyceride Lipase Long-Term in the White Adipose of Female Rat Offspring. Toxicol Sci 2018; 164:72-84. [PMID: 29617909 PMCID: PMC6016717 DOI: 10.1093/toxsci/kfy083] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Globally, approximately 10%-25% of women smoke during pregnancy. Since nicotine is highly addictive, women may use nicotine-containing products like nicotine replacement therapies for smoking cessation, but the long-term consequences of early life exposure to nicotine remain poorly defined. Our laboratory has previously demonstrated that maternal nicotine exposed (MNE) rat offspring exhibit hypertriglyceridemia due to increased hepatic de novo lipogenesis. Hypertriglyceridemia may also be attributed to impaired white adipose tissue (WAT) lipid storage; however, the effects of MNE on WAT are not completely understood. We hypothesize that nicotine-induced alterations in adipose function (eg, lipid storage) underlie dyslipidemia in MNE adults. Female 6-month-old rats exposed to nicotine during gestation and lactation exhibited significantly decreased visceral adipocyte cell area by 40%, attributed, in part, to a 3-fold increase in adipose triglyceride lipase (ATGL) protein expression compared with vehicle. Given ATGL has antioxidant properties and in utero nicotine exposure promotes oxidative stress in various tissues, we next investigated if there was evidence of increased oxidative stress in MNE WAT. At both 3 weeks and 6 months, MNE offspring expressed 37%-48% higher protein levels of superoxide dismutase-1 and -2 in WAT. Since oxidative stress can induce inflammation, we examined the inflammatory profile of WAT and found increased expression of cytokines (interleukin-1β, tumor necrosis factor α, and interleukin-6) by 44%-61% at 6 months. Collectively, this suggests that the expression of WAT ATGL may be induced to counter MNE-induced oxidative stress and inflammation. However, higher levels of ATGL would further promote lipolysis in WAT, culminating in impaired lipid storage and long-term dyslipidemia.
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Affiliation(s)
- Nicole G Barra
- Department of Physiology and Pharmacology, Western University, London, Ontario N6A 5C1, Canada
| | - Taylor A VanDuzer
- Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Alison C Holloway
- Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Daniel B Hardy
- Department of Physiology and Pharmacology, Western University, London, Ontario N6A 5C1, Canada
- Departments of Obstetrics and Gynecology, Children’s Health Research Institute, Lawson Health Research Institute, Western University, London, Ontario N6C 2V5, Canada
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Barra NG, Lisyansky M, Vanduzer TA, Raha S, Holloway AC, Hardy DB. Maternal nicotine exposure leads to decreased cardiac protein disulfide isomerase and impaired mitochondrial function in male rat offspring. J Appl Toxicol 2017; 37:1517-1526. [PMID: 28681937 DOI: 10.1002/jat.3503] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 05/24/2017] [Accepted: 05/26/2017] [Indexed: 11/08/2022]
Abstract
Smoking throughout pregnancy can lead to complications during gestation, parturition and neonatal development. Thus, nicotine replacement therapies are a popular alternative thought to be safer than cigarettes. However, recent studies in rodents suggest that fetal and neonatal nicotine exposure alone results in cardiac dysfunction and high blood pressure. While it is well known that perinatal nicotine exposure causes increased congenital abnormalities, the mechanisms underlying longer-term deficits in cardiac function are not completely understood. Recently, our laboratory demonstrated that nicotine impairs placental protein disulfide isomerase (PDI) triggering an increase in endoplasmic reticulum stress, leading us to hypothesize that this may also occur in the heart. At 3 months of age, nicotine-exposed offspring had 45% decreased PDI levels in the absence of endoplasmic reticulum stress. Given the association of PDI and superoxide dismutase enzymes, we further observed that antioxidant superoxide dismutase-2 levels were reduced by 32% in these offspring concomitant with a 26-49% decrease in mitochondrial complex proteins (I, II, IV and V) and tissue inhibitor of metalloproteinase-4, a critical matrix metalloprotease for cardiac contractility and health. Collectively, this study suggests that perinatal nicotine exposure decreases PDI, which can promote oxidative damage and mitochondrial damage, associated with a premature decline in cardiac function.
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Affiliation(s)
- Nicole G Barra
- Department of Physiology and Pharmacology, Western University, London, Ontario, Canada
| | - Maria Lisyansky
- Department of Physiology and Pharmacology, Western University, London, Ontario, Canada
| | - Taylor A Vanduzer
- Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario, Canada
| | - Sandeep Raha
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Alison C Holloway
- Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario, Canada
| | - Daniel B Hardy
- Department of Physiology and Pharmacology, Western University, London, Ontario, Canada.,Departments of Obstetrics and Gynecology, Children's Health Research Institute, Lawson, Health Research Institute, Western University, London, Ontario, Canada
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6
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Gopalakrishnan K, More AS, Hankins GD, Nanovskaya TN, Kumar S. Postnatal Cardiovascular Consequences in the Offspring of Pregnant Rats Exposed to Smoking and Smoking Cessation Pharmacotherapies. Reprod Sci 2017; 24:919-933. [PMID: 27733658 PMCID: PMC5933098 DOI: 10.1177/1933719116673199] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Approximately 20% of pregnant women smoke despite intentions to quit. Smoking cessation drugs, such as nicotine replacement therapy (NRT) and bupropion, are recommended treatments. Adverse cardiovascular outcomes in offspring have raised concerns about NRT's safety during pregnancy. However, the effect of bupropion is unknown. Using a rat model, we determined whether NRT and bupropion interventions during pregnancy are safer than continued smoking on offspring's cardiovascular function. Male offspring of controls and dams exposed to cigarette smoke (1.6 packs/day, inhalation), nicotine (2 mg/kg/d subcutaneously), and bupropion (13 mg/kg twice daily orally) were assessed for fetoplacental weight, cardiac function, blood pressure, and vascular reactivity. Fetoplacental weights were decreased and spontaneous beating and intracellular calcium in neonatal cardiomyocytes were increased in smoking, nicotine, and bupropion offspring; however, these effects were more accentuated in smoking followed by nicotine and bupropion offspring. Increased heart rate and decreased cardiac output, stroke volume, and left ventricular percent posterior wall thickening were observed in smoking, nicotine, and bupropion offspring. The left ventricular mass was reduced in smoking and nicotine but not in bupropion offspring. Blood pressure was higher with decreased endothelium-dependent relaxation and exaggerated vascular contraction to angiotensin II in smoking and nicotine offspring, with more pronounced dysfunctions in smoking than nicotine offspring. Maternal bupropion did not impact offspring's blood pressure, endothelium-dependent relaxation, and vascular contraction. In conclusion, maternal nicotine intervention adversely affects offspring's cardiovascular outcomes, albeit less severely than continued smoking. However, bupropion causes cardiac derangement in offspring but does not adversely affect blood pressure and vascular function.
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Affiliation(s)
- Kathirvel Gopalakrishnan
- Department of Obstetrics & Gynecology, The University of Texas Medical Branch, Galveston, TX, USA
| | - Amar S. More
- Department of Obstetrics & Gynecology, The University of Texas Medical Branch, Galveston, TX, USA
| | - Gary D. Hankins
- Department of Obstetrics & Gynecology, The University of Texas Medical Branch, Galveston, TX, USA
| | - Tatiana N. Nanovskaya
- Department of Obstetrics & Gynecology, The University of Texas Medical Branch, Galveston, TX, USA
| | - Sathish Kumar
- Department of Obstetrics & Gynecology, The University of Texas Medical Branch, Galveston, TX, USA
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7
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Fairley AS, Mathis KW. Cholinergic agonists reduce blood pressure in a mouse model of systemic lupus erythematosus. Physiol Rep 2017; 5:e13213. [PMID: 28400502 PMCID: PMC5392509 DOI: 10.14814/phy2.13213] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 02/21/2017] [Accepted: 02/21/2017] [Indexed: 01/08/2023] Open
Abstract
Increased inflammation arising from an abnormal immune response can damage healthy tissue and lead to disease progression. An important example of this is the accumulation of inflammatory mediators in the kidney, which can subsequently lead to hypertension and renal injury. The origin of this inflammation may involve neuro-immune interactions. For example, the novel vagus nerve-to-spleen mechanism known as the "cholinergic anti-inflammatory pathway" controls inflammation upon stimulation. However, if this pathway is dysfunctional, inflammation becomes less regulated and chronic inflammatory diseases such as hypertension may develop. Systemic lupus erythematosus (SLE) is an autoimmune disease with aberrant immune function, increased renal inflammation, and prevalent hypertension. We hypothesized that the cholinergic anti-inflammatory pathway is impaired in SLE and that stimulation of this pathway would protect from the progression of hypertension in SLE mice. Female SLE (NZBWF1) and control (NZW) mice were administered nicotine or vehicle for 7 days (2 mg/kg/day, subcutaneously) in order to stimulate the cholinergic anti-inflammatory pathway at the level of the splenic nicotinic acetylcholine receptor (α7-nAChR). Blood pressure was assessed posttreatment. Nicotine-treated SLE mice did not develop hypertension and this lower blood pressure (compared to saline-treated SLE mice) coincided with lower splenic and renal cortical expression of pro-inflammatory cytokines. These data provide evidence that the cholinergic anti-inflammatory pathway is impaired in SLE In addition, these data suggest that stimulation of the cholinergic anti-inflammatory pathway can protect the kidney by dampening inflammation and therefore prevent the progression of hypertension in the setting of SLE.
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Affiliation(s)
- Amber S Fairley
- Institute for Cardiovascular and Metabolic Diseases University of North Texas Health Science Center, Fort Worth, Texas
| | - Keisa W Mathis
- Institute for Cardiovascular and Metabolic Diseases University of North Texas Health Science Center, Fort Worth, Texas
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8
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Yu F, Zheng A, Qian J, Li Y, Wu L, Yang J, Gao X. Prenatal nicotine exposure results in the myocardial fibrosis in the adult male offspring rats. ACTA ACUST UNITED AC 2016; 68:445-50. [PMID: 27436000 DOI: 10.1016/j.etp.2016.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 06/07/2016] [Accepted: 07/11/2016] [Indexed: 12/21/2022]
Abstract
Our previous study showed that prenatal nicotine exposure could increase the heart rate of adult male offspring rats, but little is known about the mechanism. The aim of this study was to investigate the mechanism. Nicotine was subcutaneously administered to pregnant rats at a dose of 1.5mgkg(-1) from the gestational days 3-21; the control group received the same volume of saline by the same route. The offsprings' heart weight, ejection function, ultrastructure, and blood hormones were determined. The present study exhibited that prenatal nicotine exposure significantly decreased the offsprings' heart and body weight at gestational day 21 and at day 15 after birth, but had no effect on the heart and body weight at 90 days after birth. The hearts were fibrosed in the nicotine exposed male offsprings, and the heart ejection functions of the nicotine male offsprings at 90 days after birth were decreased, including SV, FS and EF. In addition, prenatal nicotine exposure significantly increased the offspring's blood adrenaline and norepinephrine levels. These data suggest that the increased heart rate caused by prenatal nicotine exposure may be a result of myocardial fibrosis, which leads to heart function decreases, and these data imply a myocardial fibrosis risk of prenatal nicotine exposure.
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Affiliation(s)
- Feng Yu
- School of Medicine and Nursing sciences, Huzhou University, Huzhou, China.
| | - Aiqiang Zheng
- Department of Cardiology, Changxing People's Hospital, China
| | - Jin Qian
- School of Medicine and Nursing sciences, Huzhou University, Huzhou, China
| | - Yuexia Li
- School of Medicine and Nursing sciences, Huzhou University, Huzhou, China
| | - Lei Wu
- Centers for Disease Control and Prevention of Suzhou Industrial Park, Suzhou 215021, China
| | - Jian Yang
- Department of Cardiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, China
| | - Xiren Gao
- School of Medicine and Nursing sciences, Huzhou University, Huzhou, China
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Morton JS, Cooke CL, Davidge ST. In Utero Origins of Hypertension: Mechanisms and Targets for Therapy. Physiol Rev 2016; 96:549-603. [DOI: 10.1152/physrev.00015.2015] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The developmental origins of health and disease theory is based on evidence that a suboptimal environment during fetal and neonatal development can significantly impact the evolution of adult-onset disease. Abundant evidence exists that a compromised prenatal (and early postnatal) environment leads to an increased risk of hypertension later in life. Hypertension is a silent, chronic, and progressive disease defined by elevated blood pressure (>140/90 mmHg) and is strongly correlated with cardiovascular morbidity/mortality. The pathophysiological mechanisms, however, are complex and poorly understood, and hypertension continues to be one of the most resilient health problems in modern society. Research into the programming of hypertension has proposed pharmacological treatment strategies to reverse and/or prevent disease. In addition, modifications to the lifestyle of pregnant women might impart far-reaching benefits to the health of their children. As more information is discovered, more successful management of hypertension can be expected to follow; however, while pregnancy complications such as fetal growth restriction, preeclampsia, preterm birth, etc., continue to occur, their offspring will be at increased risk for hypertension. This article reviews the current knowledge surrounding the developmental origins of hypertension, with a focus on mechanistic pathways and targets for therapeutic and pharmacologic interventions.
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Affiliation(s)
- Jude S. Morton
- Departments of Obstetrics and Gynaecology and of Physiology, University of Alberta, Edmonton, Canada; Women and Children's Health Research Institute, Edmonton, Canada; and Cardiovascular Research Centre, Edmonton, Canada
| | - Christy-Lynn Cooke
- Departments of Obstetrics and Gynaecology and of Physiology, University of Alberta, Edmonton, Canada; Women and Children's Health Research Institute, Edmonton, Canada; and Cardiovascular Research Centre, Edmonton, Canada
| | - Sandra T. Davidge
- Departments of Obstetrics and Gynaecology and of Physiology, University of Alberta, Edmonton, Canada; Women and Children's Health Research Institute, Edmonton, Canada; and Cardiovascular Research Centre, Edmonton, Canada
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Sun Z, Hu S, Zuo N, Yang S, He Z, Ao Y, Wang H. Prenatal nicotine exposure induced GDNF/c-Ret pathway repression-related fetal renal dysplasia and adult glomerulosclerosis in male offspring. Toxicol Res (Camb) 2015. [DOI: 10.1039/c5tx00040h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Prenatal nicotine exposure could induce fetal renal dysplasia associated with the suppression of the GDNF/c-Ret pathway and adult glomerulosclerosis in male offspring, which might be mediated by alterations in angiotensin II receptors.
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Affiliation(s)
- Zhaoxia Sun
- Department of Pharmacology
- Wuhan University School of Basic Medical Sciences
- Wuhan 430071
- China
| | - Shuangshuang Hu
- Department of Pharmacology
- Wuhan University School of Basic Medical Sciences
- Wuhan 430071
- China
| | - Na Zuo
- Department of Pharmacology
- Wuhan University School of Basic Medical Sciences
- Wuhan 430071
- China
| | - Shuailong Yang
- Department of Pharmacology
- Wuhan University School of Basic Medical Sciences
- Wuhan 430071
- China
| | - Zheng He
- Department of Pharmacology
- Wuhan University School of Basic Medical Sciences
- Wuhan 430071
- China
| | - Ying Ao
- Department of Pharmacology
- Wuhan University School of Basic Medical Sciences
- Wuhan 430071
- China
- Hubei Provincial Key Laboratory of Developmentally Originated Disorder
| | - Hui Wang
- Department of Pharmacology
- Wuhan University School of Basic Medical Sciences
- Wuhan 430071
- China
- Hubei Provincial Key Laboratory of Developmentally Originated Disorder
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11
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Fetal and neonatal exposure to nicotine leads to augmented hepatic and circulating triglycerides in adult male offspring due to increased expression of fatty acid synthase. Toxicol Appl Pharmacol 2013; 275:1-11. [PMID: 24368177 DOI: 10.1016/j.taap.2013.12.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 12/09/2013] [Accepted: 12/12/2013] [Indexed: 12/25/2022]
Abstract
While nicotine replacement therapy is assumed to be a safer alternative to smoking during pregnancy, the long-term consequences for the offspring remain elusive. Animal studies now suggest that maternal nicotine exposure during perinatal life leads to a wide range of adverse outcomes for the offspring including increased adiposity. The focus of this study was to investigate if nicotine exposure during pregnancy and lactation leads to alterations in hepatic triglyceride synthesis. Female Wistar rats were randomly assigned to receive daily subcutaneous injections of saline (vehicle) or nicotine bitartrate (1mg/kg/day) for two weeks prior to mating until weaning. At postnatal day 180 (PND 180), nicotine exposed offspring exhibited significantly elevated levels of circulating and hepatic triglycerides in the male offspring. This was concomitant with increased expression of fatty acid synthase (FAS), the critical hepatic enzyme in de novo triglyceride synthesis. Given that FAS is regulated by the nuclear receptor Liver X receptor (LXRα), we measured LXRα expression in both control and nicotine-exposed offspring. Nicotine exposure during pregnancy and lactation led to an increase in hepatic LXRα protein expression and enriched binding to the putative LXRE element on the FAS promoter in PND 180 male offspring. This was also associated with significantly enhanced acetylation of histone H3 [K9,14] surrounding the FAS promoter, a hallmark of chromatin activation. Collectively, these findings suggest that nicotine exposure during pregnancy and lactation leads to an increase in circulating and hepatic triglycerides long-term via changes in the transcriptional and epigenetic regulation of the hepatic lipogenic pathway.
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12
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Rogers JM, Ellis-Hutchings RG, Grey BE, Zucker RM, Norwood J, Grace CE, Gordon CJ, Lau C. Elevated Blood Pressure in Offspring of Rats Exposed to Diverse Chemicals During Pregnancy. Toxicol Sci 2013; 137:436-46. [DOI: 10.1093/toxsci/kft248] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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