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Nandi SS, Katsurada K, Moulton MJ, Zheng H, Patel KP. Enhanced central sympathetic tone induces heart failure with preserved ejection fraction (HFpEF) in rats. Front Physiol 2023; 14:1277065. [PMID: 38169715 PMCID: PMC10758618 DOI: 10.3389/fphys.2023.1277065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 11/20/2023] [Indexed: 01/05/2024] Open
Abstract
Heart failure with preserved ejection fraction (HFpEF) is a heterogenous clinical syndrome characterized by diastolic dysfunction, concentric cardiac left ventricular (LV) hypertrophy, and myocardial fibrosis with preserved systolic function. However, the underlying mechanisms of HFpEF are not clear. We hypothesize that an enhanced central sympathetic drive is sufficient to induce LV dysfunction and HFpEF in rats. Male Sprague-Dawley rats were subjected to central infusion of either saline controls (saline) or angiotensin II (Ang II, 20 ng/min, i.c.v) via osmotic mini-pumps for 14 days to elicit enhanced sympathetic drive. Echocardiography and invasive cardiac catheterization were used to measure systolic and diastolic functions. Mean arterial pressure, heart rate, left ventricular end-diastolic pressure (LVEDP), and ± dP/dt changes in responses to isoproterenol (0.5 μg/kg, iv) were measured. Central infusion of Ang II resulted in increased sympatho-excitation with a consequent increase in blood pressure. Although the ejection fraction was comparable between the groups, there was a decrease in the E/A ratio (saline: 1.5 ± 0.2 vs Ang II: 1.2 ± 0.1). LVEDP was significantly increased in the Ang II-treated group (saline: 1.8 ± 0.2 vs Ang II: 4.6 ± 0.5). The increase in +dP/dt to isoproterenol was not significantly different between the groups, but the response in -dP/dt was significantly lower in Ang II-infused rats (saline: 11,765 ± 708 mmHg/s vs Ang II: 8,581 ± 661). Ang II-infused rats demonstrated an increased heart to body weight ratio, cardiomyocyte hypertrophy, and fibrosis. There were elevated levels of atrial natriuretic peptide and interleukin-6 in the Ang II-infused group. In conclusion, central infusion of Ang II in rats induces sympatho-excitation with concurrent diastolic dysfunction, pathological cardiac concentric hypertrophy, and cardiac fibrosis. This novel model of centrally mediated sympatho-excitation demonstrates characteristic diastolic dysfunction in rats, representing a potentially useful preclinical murine model of HFpEF to investigate various altered underlying mechanisms during HFpEF in future studies.
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Affiliation(s)
- Shyam S. Nandi
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Kenichi Katsurada
- Division of Cardiovascular Medicine, Department of Internal Medicine, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, Japan
| | - Michael J. Moulton
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE, United States
| | - Hong Zheng
- Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD, United States
| | - Kaushik P. Patel
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, United States
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Di Battista M, Wasson CW, Alcacer-Pitarch B, Del Galdo F. Autonomic dysfunction in systemic sclerosis: A scoping review. Semin Arthritis Rheum 2023; 63:152268. [PMID: 37776665 DOI: 10.1016/j.semarthrit.2023.152268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 08/09/2023] [Accepted: 08/27/2023] [Indexed: 10/02/2023]
Abstract
INTRODUCTION Over the years several lines of evidence have implied a pathological involvement of autonomic nervous system (ANS) in systemic sclerosis (SSc). However, the relationship between autonomic dysfunction and SSc is not yet fully understood. The aims of this scoping review were to map the research done in this field and inform future research to investigate pathogenic hypotheses of ANS involvement. METHODS We performed a scoping review of publications collected through a literature search of MEDLINE and Web of Science databases, looking for dysautonomia in SSc. We included original data from papers that addressed ANS involvement in SSc regarding pathogenesis, clinical presentation and diagnostic tools. RESULTS 467 papers were identified, 109 studies were selected to be included in the present review, reporting data from a total of 2742 SSc patients. Cardiovascular system was the most extensively investigated, assessing heart rate variability with 24 h HolterECG or Ewing's autonomic tests. Important signs of dysautonomia were also found in digital vasculopathy, gastrointestinal system and SSc skin, assessed both with non-invasive techniques and histologically. Research hypotheses mainly regarding the relationship between sympathetic system - ischemia and the role of neurotrophins were then developed and discussed. CONCLUSION We described the currently available evidence on pathogenesis, clinical presentation and diagnostic assessment of dysautonomia in SSc patients. A strong influence of ANS deregulation on SSc clearly emerges from the literature. Future research is warranted to clarify the mechanisms and timing of autonomic dysfunction in SSc.
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Affiliation(s)
- Marco Di Battista
- Rheumatology Unit, University of Pisa, Pisa, Italy; Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Christopher W Wasson
- Faculty of Medicine and Health, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
| | - Begonya Alcacer-Pitarch
- Faculty of Medicine and Health, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Scleroderma Programme, NIHR Leeds Musculoskeletal Biomedical Research Centre, Leeds, UK.
| | - Francesco Del Galdo
- Faculty of Medicine and Health, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Scleroderma Programme, NIHR Leeds Musculoskeletal Biomedical Research Centre, Leeds, UK
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Soliman RH, Pollock DM. Circadian Control of Sodium and Blood Pressure Regulation. Am J Hypertens 2021; 34:1130-1142. [PMID: 34166494 PMCID: PMC9526808 DOI: 10.1093/ajh/hpab100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 05/12/2021] [Accepted: 06/23/2021] [Indexed: 01/26/2023] Open
Abstract
The attention for the control of dietary risk factors involved in the development of hypertension, includes a large effort on dietary salt restrictions. Ample studies show the beneficial role of limiting dietary sodium as a lifestyle modification in the prevention and management of essential hypertension. Not until the past decade or so have studies more specifically investigated diurnal variations in renal electrolyte excretion, which led us to the hypothesis that timing of salt intake may impact cardiovascular health and blood pressure regulation. Cell autonomous molecular clocks as the name implies, function independently to maintain optimum functional rhythmicity in the face of environmental stressors such that cellular homeostasis is maintained at all times. Our understanding of mechanisms influencing diurnal patterns of sodium excretion and blood pressure has expanded with the discovery of the circadian clock genes. In this review, we discuss what is known about circadian regulation of renal sodium handling machinery and its influence on blood pressure regulation, with timing of sodium intake as a potential modulator of the kidney clock.
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Affiliation(s)
- Reham H Soliman
- Section of Cardio-renal Physiology and Medicine, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - David M Pollock
- Section of Cardio-renal Physiology and Medicine, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Hasegawa Y, Takemoto Y, Hayashi K, Kameno K, Kim-Mitsuyama S. The endogenous and exogenous brain-derived neurotrophic factor plays pivotal roles in the pathogenesis of stroke onset in high salt-loaded hypertensive rats. Exp Gerontol 2021; 147:111286. [PMID: 33609688 DOI: 10.1016/j.exger.2021.111286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/23/2021] [Accepted: 02/14/2021] [Indexed: 12/17/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) is known to have neuroprotective effects on multiple neurovascular diseases especially poststroke recovery. On the other hand, BDNF reported to increase blood pressure (BP) which is one of the major risk factors for stroke onset. To clarify the conflicting effects on stroke onset, we examined the expression of endogenous BDNF in relation to stroke onset. In addition, we explored the effect of exogenous central BDNF against stroke onset and all-cause mortality as the primary endpoint and BP as the secondary object in hypertensive rats with high-salt diet. In experiment 1, male spontaneously hypertensive stroke-prone rats (SHRSP) were fed a 0.3% (n = 8) or an 8% (n = 22) sodium diet (Na) through 28 days. The SHRSP with 8% Na showed significant increase of stroke onset, all-cause mortality, upregulation of reactive astrocytes, and disruption of blood-brain barrier. BDNF in the rats with 8% Na was significantly upregulated and mainly expressed in reactive astrocytes, whereas phosphorylated tropomyosin-related kinase B did not change by the rich BDNF. In experiment 2, male SHRSP were treated with continuous intracerebroventricular injection of 2.1 μg/day BDNF (n = 10) or the vehicle (Phosphate buffer saline; n = 10) and fed an 8% Na through 24 days. Exogenous central BDNF induced significant increase of BP and heart rate, and exhibited higher stroke onset and all-cause mortality compared with vehicle group. The present study demonstrated that endogenous BDNF were significantly produced in reactive astrocytes in relation to stroke onset regardless of neuroprotection. In addition, exogenous central BDNF increased BP which might be associated with sympathetic nerve activity and provided unfavorable effects on the prognosis of hypertensive rats. As BDNF is still potentially a good candidate for the treatment of neurovascular diseases, we suggest that hypertensive patients need care for the elevation of BP in the clinical trials of BDNF.
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Affiliation(s)
- Yu Hasegawa
- Departments of Pharmacology and Molecular Therapeutics, Graduate School of Medical Sciences, Kumamoto University, 1-1-1, Honjo, Kumamoto, Kumamoto, Japan; Department of Pharmaceutical Science, School of Pharmacy at Fukuoka, International University of Health and Welfare, 137-1, Enokizu, Okawa, Fukuoka 8318501, Japan.
| | - Yushin Takemoto
- Departments of Pharmacology and Molecular Therapeutics, Graduate School of Medical Sciences, Kumamoto University, 1-1-1, Honjo, Kumamoto, Kumamoto, Japan
| | - Kenyu Hayashi
- Departments of Pharmacology and Molecular Therapeutics, Graduate School of Medical Sciences, Kumamoto University, 1-1-1, Honjo, Kumamoto, Kumamoto, Japan
| | - Koki Kameno
- Departments of Pharmacology and Molecular Therapeutics, Graduate School of Medical Sciences, Kumamoto University, 1-1-1, Honjo, Kumamoto, Kumamoto, Japan
| | - Shokei Kim-Mitsuyama
- Departments of Pharmacology and Molecular Therapeutics, Graduate School of Medical Sciences, Kumamoto University, 1-1-1, Honjo, Kumamoto, Kumamoto, Japan
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Sharma NM, Haibara AS, Katsurada K, Nandi SS, Liu X, Zheng H, Patel KP. Central Ang II (Angiotensin II)-Mediated Sympathoexcitation: Role for HIF-1α (Hypoxia-Inducible Factor-1α) Facilitated Glutamatergic Tone in the Paraventricular Nucleus of the Hypothalamus. Hypertension 2020; 77:147-157. [PMID: 33296248 PMCID: PMC7720881 DOI: 10.1161/hypertensionaha.120.16002] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Central infusion of Ang II (angiotensin II) has been associated with increased sympathetic outflow resulting in neurogenic hypertension. In the present study, we appraised whether the chronic increase in central Ang II activates the paraventricular nucleus of the hypothalamus (PVN) resulting in elevated sympathetic tone and altered baro- and chemoreflexes. Further, we evaluated the contribution of HIF-1α (hypoxia-inducible factor-1α), a transcription factor involved in enhancing the expression of N-methyl-D-aspartate receptors and thus glutamatergic-mediated sympathetic tone from the PVN. Ang II infusion (20 ng/minute, intracerebroventricular, 14 days) increased mean arterial pressure (126±9 versus 84±4 mm Hg), cardiac sympathetic tone (96±7 versus 75±6 bpm), and decreased cardiac parasympathetic tone (16±2 versus 36±3 versus bpm) compared with saline-infused controls in conscious rats. The Ang II-infused group also showed an impaired baroreflex control of heart rate (-1.50±0.1 versus -2.50±0.3 bpm/mm Hg), potentiation of the chemoreflex pressor response (53±7 versus 30±7 mm Hg) and increased number of FosB-labeled cells (53±3 versus 19±4) in the PVN. Concomitant with the activation of the PVN, there was an increased expression of HIF-1α and N-Methyl-D-Aspartate-type1 receptors in the PVN. Further, Ang II-infusion showed increased renal sympathetic nerve activity (20.5±2.3% versus 6.4±1.9% of Max) and 3-fold enhanced renal sympathetic nerve activity responses to microinjection of N-methyl-D-aspartate (200 pmol) into the PVN of anesthetized rats. Further, silencing of HIF-1α in NG108 cells abrogated the expression of N-methyl-D-aspartate-N-methyl-D-aspartate-type1 induced by Ang II. Taken together, our studies suggest a novel Ang II-HIF-1α-N-methyl-D-aspartate receptor-mediated activation of preautonomic neurons in the PVN, resulting in increased sympathetic outflow and alterations in baro- and chemoreflexes.
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Affiliation(s)
- Neeru M Sharma
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha (N.M.S., A.S.H., K.K., S.S.N., K.P.P.)
| | - Andréa S Haibara
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha (N.M.S., A.S.H., K.K., S.S.N., K.P.P.)
| | - Kenichi Katsurada
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha (N.M.S., A.S.H., K.K., S.S.N., K.P.P.)
| | - Shyam S Nandi
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha (N.M.S., A.S.H., K.K., S.S.N., K.P.P.)
| | - Xuefei Liu
- Division of Basic Biomedical Sciences, Sanford School of Medicine of the University of South Dakota, Vermillion (X.L., H.Z.)
| | - Hong Zheng
- Division of Basic Biomedical Sciences, Sanford School of Medicine of the University of South Dakota, Vermillion (X.L., H.Z.)
| | - Kaushik P Patel
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha (N.M.S., A.S.H., K.K., S.S.N., K.P.P.)
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Hammoud SH, Wehbe Z, Abdelhady S, Kobeissy F, Eid AH, El-Yazbi AF. Dysregulation of Angiotensin Converting Enzyme 2 Expression and Function in Comorbid Disease Conditions Possibly Contributes to Coronavirus Infectious Disease 2019 Complication Severity. Mol Pharmacol 2020; 99:17-28. [PMID: 33082267 DOI: 10.1124/molpharm.120.000119] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 10/09/2020] [Indexed: 01/08/2023] Open
Abstract
ACE2 has emerged as a double agent in the COVID-19 ordeal, as it is both physiologically protective and virally conducive. The identification of ACE2 in as many as 72 tissues suggests that extrapulmonary invasion and damage is likely, which indeed has already been demonstrated by cardiovascular and gastrointestinal symptoms. On the other hand, identifying ACE2 dysregulation in patients with comorbidities may offer insight as to why COVID-19 symptoms are often more severe in these individuals. This may be attributed to a pre-existing proinflammatory state that is further propelled with the cytokine storm induced by SARS-CoV-2 infection or the loss of functional ACE2 expression as a result of viral internalization. Here, we aim to characterize the distribution and role of ACE2 in various organs to highlight the scope of damage that may arise upon SARS-CoV-2 invasion. Furthermore, by examining the disruption of ACE2 in several comorbid diseases, we offer insight into potential causes of increased severity of COVID-19 symptoms in certain individuals. SIGNIFICANCE STATEMENT: Cell surface expression of ACE2 determines the tissue susceptibility for coronavirus infectious disease 2019 infection. Comorbid disease conditions altering ACE2 expression could increase the patient's vulnerability for the disease and its complications, either directly, through modulation of viral infection, or indirectly, through alteration of inflammatory status.
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Affiliation(s)
- Safaa H Hammoud
- Department of Pharmacology and Therapeutics, Beirut Arab University, Beirut, Lebanon (S.H.); Departments of Biology (Z.W.), Biochemistry and Molecular Genetics (F.K.), and Pharmacology and Toxicology (A.H.E., A.F.E.-Y.), American University of Beirut, Beirut, Lebanon; Department of Pharmacology and Toxicology, Faculty of Pharmacy (A.F.E.-Y.) and Faculty of Medicine (S.A.), Alexandria University, Alexandria, Egypt; and Department of Basic Medical Sciences, College of Medicine, and Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha, Qatar (A.H.E.)
| | - Zena Wehbe
- Department of Pharmacology and Therapeutics, Beirut Arab University, Beirut, Lebanon (S.H.); Departments of Biology (Z.W.), Biochemistry and Molecular Genetics (F.K.), and Pharmacology and Toxicology (A.H.E., A.F.E.-Y.), American University of Beirut, Beirut, Lebanon; Department of Pharmacology and Toxicology, Faculty of Pharmacy (A.F.E.-Y.) and Faculty of Medicine (S.A.), Alexandria University, Alexandria, Egypt; and Department of Basic Medical Sciences, College of Medicine, and Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha, Qatar (A.H.E.)
| | - Samar Abdelhady
- Department of Pharmacology and Therapeutics, Beirut Arab University, Beirut, Lebanon (S.H.); Departments of Biology (Z.W.), Biochemistry and Molecular Genetics (F.K.), and Pharmacology and Toxicology (A.H.E., A.F.E.-Y.), American University of Beirut, Beirut, Lebanon; Department of Pharmacology and Toxicology, Faculty of Pharmacy (A.F.E.-Y.) and Faculty of Medicine (S.A.), Alexandria University, Alexandria, Egypt; and Department of Basic Medical Sciences, College of Medicine, and Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha, Qatar (A.H.E.)
| | - Firas Kobeissy
- Department of Pharmacology and Therapeutics, Beirut Arab University, Beirut, Lebanon (S.H.); Departments of Biology (Z.W.), Biochemistry and Molecular Genetics (F.K.), and Pharmacology and Toxicology (A.H.E., A.F.E.-Y.), American University of Beirut, Beirut, Lebanon; Department of Pharmacology and Toxicology, Faculty of Pharmacy (A.F.E.-Y.) and Faculty of Medicine (S.A.), Alexandria University, Alexandria, Egypt; and Department of Basic Medical Sciences, College of Medicine, and Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha, Qatar (A.H.E.)
| | - Ali H Eid
- Department of Pharmacology and Therapeutics, Beirut Arab University, Beirut, Lebanon (S.H.); Departments of Biology (Z.W.), Biochemistry and Molecular Genetics (F.K.), and Pharmacology and Toxicology (A.H.E., A.F.E.-Y.), American University of Beirut, Beirut, Lebanon; Department of Pharmacology and Toxicology, Faculty of Pharmacy (A.F.E.-Y.) and Faculty of Medicine (S.A.), Alexandria University, Alexandria, Egypt; and Department of Basic Medical Sciences, College of Medicine, and Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha, Qatar (A.H.E.)
| | - Ahmed F El-Yazbi
- Department of Pharmacology and Therapeutics, Beirut Arab University, Beirut, Lebanon (S.H.); Departments of Biology (Z.W.), Biochemistry and Molecular Genetics (F.K.), and Pharmacology and Toxicology (A.H.E., A.F.E.-Y.), American University of Beirut, Beirut, Lebanon; Department of Pharmacology and Toxicology, Faculty of Pharmacy (A.F.E.-Y.) and Faculty of Medicine (S.A.), Alexandria University, Alexandria, Egypt; and Department of Basic Medical Sciences, College of Medicine, and Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha, Qatar (A.H.E.)
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Amadio P, Zarà M, Sandrini L, Ieraci A, Barbieri SS. Depression and Cardiovascular Disease: The Viewpoint of Platelets. Int J Mol Sci 2020; 21:E7560. [PMID: 33066277 PMCID: PMC7589256 DOI: 10.3390/ijms21207560] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/08/2020] [Accepted: 10/09/2020] [Indexed: 02/06/2023] Open
Abstract
Depression is a major cause of morbidity and low quality of life among patients with cardiovascular disease (CVD), and it is now considered as an independent risk factor for major adverse cardiovascular events. Increasing evidence indicates not only that depression worsens the prognosis of cardiac events, but also that a cross-vulnerability between the two conditions occurs. Among the several mechanisms proposed to explain this interplay, platelet activation is the more attractive, seeing platelets as potential mirror of the brain function. In this review, we dissected the mechanisms linking depression and CVD highlighting the critical role of platelet behavior during depression as trigger of cardiovascular complication. In particular, we will discuss the relationship between depression and molecules involved in the CVD (e.g., catecholamines, adipokines, lipids, reactive oxygen species, and chemokines), emphasizing their impact on platelet activation and related mechanisms.
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Affiliation(s)
- Patrizia Amadio
- Unit of Brain-Heart Axis: Cellular and Molecular Mechanism, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (M.Z.); (L.S.)
| | - Marta Zarà
- Unit of Brain-Heart Axis: Cellular and Molecular Mechanism, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (M.Z.); (L.S.)
| | - Leonardo Sandrini
- Unit of Brain-Heart Axis: Cellular and Molecular Mechanism, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (M.Z.); (L.S.)
| | - Alessandro Ieraci
- Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy;
| | - Silvia Stella Barbieri
- Unit of Brain-Heart Axis: Cellular and Molecular Mechanism, Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (M.Z.); (L.S.)
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Hasegawa Y, Cheng C, Hayashi K, Takemoto Y, Kim-Mitsuyama S. Anti-apoptotic effects of BDNF-TrkB signaling in the treatment of hemorrhagic stroke. BRAIN HEMORRHAGES 2020. [DOI: 10.1016/j.hest.2020.04.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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Zhang Z, Zhang Y, Wang Y, Ding S, Wang C, Gao L, Johnson A, Xue B. Genetic knockdown of brain-derived neurotrophic factor in the nervous system attenuates angiotensin II-induced hypertension in mice. J Renin Angiotensin Aldosterone Syst 2019; 20:1470320319834406. [PMID: 30894041 PMCID: PMC6429654 DOI: 10.1177/1470320319834406] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Introduction: Brain-derived neurotropic factor (BDNF) is expressed throughout the central nervous system and peripheral organs involved in the regulation of blood pressure, but the systemic effects of BDNF in the control of blood pressure are not well elucidated. Materials and methods: We utilized loxP flanked BDNF male mice to cross with nestin-Cre female mice to generate nerve system BDNF knockdown mice, nestin-BDNF (+/–), or injected Cre adenovirus into the subfornical organ to create subfornical organ BDNF knockdown mice. Histochemistry was used to verify injection location. Radiotelemetry was employed to determine baseline blood pressure and pressor response to angiotensin II (1000 ng/kg/min). Real-time polymerase chain reaction was used to measure the expression of renin–angiotensin system components in the laminal terminalis and peripheral organs. Results: Nestin-BDNF (+/–) mice had lower renin–angiotensin system expression in the laminal terminalis and peripheral organs including the gonadal fat pad, and a lower basal blood pressure. They exhibited an attenuated hypertensive response and a weak or similar modification of renin–angiotensin system component expression to angiotensin II infusion. Subfornical organ BDNF knockdown was sufficient for the attenuation of angiotensin II-induced hypertension. Conclusion: Central BDNF, especially subfornical organ BDNF is involved in the maintenance of basal blood pressure and in augmentation of hypertensive response to angiotensin II through systemic regulation of the expression of renin–angiotensin system molecules.
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Affiliation(s)
- Zhongming Zhang
- 1 Zhang Zhongjing College of Chinese Medicine, Henan Key Laboratory of Zhang Zhongjing's Formulea for Immunoregulation, Nanyang Institute of Technology, China
| | - Yijing Zhang
- 1 Zhang Zhongjing College of Chinese Medicine, Henan Key Laboratory of Zhang Zhongjing's Formulea for Immunoregulation, Nanyang Institute of Technology, China
| | - Yan Wang
- 1 Zhang Zhongjing College of Chinese Medicine, Henan Key Laboratory of Zhang Zhongjing's Formulea for Immunoregulation, Nanyang Institute of Technology, China
| | - Shengchen Ding
- 1 Zhang Zhongjing College of Chinese Medicine, Henan Key Laboratory of Zhang Zhongjing's Formulea for Immunoregulation, Nanyang Institute of Technology, China
| | - Chenhui Wang
- 1 Zhang Zhongjing College of Chinese Medicine, Henan Key Laboratory of Zhang Zhongjing's Formulea for Immunoregulation, Nanyang Institute of Technology, China
| | - Li Gao
- 1 Zhang Zhongjing College of Chinese Medicine, Henan Key Laboratory of Zhang Zhongjing's Formulea for Immunoregulation, Nanyang Institute of Technology, China
| | - Alan Johnson
- 2 Department of Psychological and Brain Sciences, University of Iowa, USA
| | - Baojian Xue
- 2 Department of Psychological and Brain Sciences, University of Iowa, USA
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The role of neurotrophins in psychopathology and cardiovascular diseases: psychosomatic connections. J Neural Transm (Vienna) 2019; 126:265-278. [PMID: 30767081 PMCID: PMC6449302 DOI: 10.1007/s00702-019-01973-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 01/16/2019] [Indexed: 12/18/2022]
Abstract
Cardiovascular (CV) diseases and mood disorders are common public health problems worldwide. Their connections are widely studied, and the role of neurotrophins (NTs) is already supposed in both conditions. However, data in the literature of clinical aspects are sometimes controversial and no reviews are available describing possible associations between CV risk and mood disorders based on NTs. The mostly studied NT is brain-derived neurotrophic factor (BDNF). Decreased level of BDNF is observed in depression and its connection to hypertension has also been demonstrated with affecting the arterial baroreceptors, renin–angiotensin system and endothelial nitric oxide synthase. BDNF was also found to be the predictor of CV outcome in different patient populations. Other types of human NT-s, such as nerve growth factor, neurotrophin 3 and neurotrophin 4 also seem to have both psychopathological and CV connections. Our aim was to overview the present knowledge in this area, demonstrating a new aspect of the associations between mood disorders and CV diseases through the mediation of NTs. These findings might enlighten new psychosomatic connections and suggest new therapeutic targets that are beneficial both in respect of mood disorders and CV pathology.
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Forrester SJ, Booz GW, Sigmund CD, Coffman TM, Kawai T, Rizzo V, Scalia R, Eguchi S. Angiotensin II Signal Transduction: An Update on Mechanisms of Physiology and Pathophysiology. Physiol Rev 2018; 98:1627-1738. [PMID: 29873596 DOI: 10.1152/physrev.00038.2017] [Citation(s) in RCA: 614] [Impact Index Per Article: 102.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The renin-angiotensin-aldosterone system plays crucial roles in cardiovascular physiology and pathophysiology. However, many of the signaling mechanisms have been unclear. The angiotensin II (ANG II) type 1 receptor (AT1R) is believed to mediate most functions of ANG II in the system. AT1R utilizes various signal transduction cascades causing hypertension, cardiovascular remodeling, and end organ damage. Moreover, functional cross-talk between AT1R signaling pathways and other signaling pathways have been recognized. Accumulating evidence reveals the complexity of ANG II signal transduction in pathophysiology of the vasculature, heart, kidney, and brain, as well as several pathophysiological features, including inflammation, metabolic dysfunction, and aging. In this review, we provide a comprehensive update of the ANG II receptor signaling events and their functional significances for potential translation into therapeutic strategies. AT1R remains central to the system in mediating physiological and pathophysiological functions of ANG II, and participation of specific signaling pathways becomes much clearer. There are still certain limitations and many controversies, and several noteworthy new concepts require further support. However, it is expected that rigorous translational research of the ANG II signaling pathways including those in large animals and humans will contribute to establishing effective new therapies against various diseases.
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Affiliation(s)
- Steven J Forrester
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University , Philadelphia, Pennsylvania ; Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center , Jackson, Mississippi ; Department of Pharmacology, Center for Hypertension Research, Roy J. and Lucille A. Carver College of Medicine, University of Iowa , Iowa City, Iowa ; and Duke-NUS, Singapore and Department of Medicine, Duke University Medical Center , Durham, North Carolina
| | - George W Booz
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University , Philadelphia, Pennsylvania ; Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center , Jackson, Mississippi ; Department of Pharmacology, Center for Hypertension Research, Roy J. and Lucille A. Carver College of Medicine, University of Iowa , Iowa City, Iowa ; and Duke-NUS, Singapore and Department of Medicine, Duke University Medical Center , Durham, North Carolina
| | - Curt D Sigmund
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University , Philadelphia, Pennsylvania ; Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center , Jackson, Mississippi ; Department of Pharmacology, Center for Hypertension Research, Roy J. and Lucille A. Carver College of Medicine, University of Iowa , Iowa City, Iowa ; and Duke-NUS, Singapore and Department of Medicine, Duke University Medical Center , Durham, North Carolina
| | - Thomas M Coffman
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University , Philadelphia, Pennsylvania ; Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center , Jackson, Mississippi ; Department of Pharmacology, Center for Hypertension Research, Roy J. and Lucille A. Carver College of Medicine, University of Iowa , Iowa City, Iowa ; and Duke-NUS, Singapore and Department of Medicine, Duke University Medical Center , Durham, North Carolina
| | - Tatsuo Kawai
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University , Philadelphia, Pennsylvania ; Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center , Jackson, Mississippi ; Department of Pharmacology, Center for Hypertension Research, Roy J. and Lucille A. Carver College of Medicine, University of Iowa , Iowa City, Iowa ; and Duke-NUS, Singapore and Department of Medicine, Duke University Medical Center , Durham, North Carolina
| | - Victor Rizzo
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University , Philadelphia, Pennsylvania ; Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center , Jackson, Mississippi ; Department of Pharmacology, Center for Hypertension Research, Roy J. and Lucille A. Carver College of Medicine, University of Iowa , Iowa City, Iowa ; and Duke-NUS, Singapore and Department of Medicine, Duke University Medical Center , Durham, North Carolina
| | - Rosario Scalia
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University , Philadelphia, Pennsylvania ; Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center , Jackson, Mississippi ; Department of Pharmacology, Center for Hypertension Research, Roy J. and Lucille A. Carver College of Medicine, University of Iowa , Iowa City, Iowa ; and Duke-NUS, Singapore and Department of Medicine, Duke University Medical Center , Durham, North Carolina
| | - Satoru Eguchi
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University , Philadelphia, Pennsylvania ; Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center , Jackson, Mississippi ; Department of Pharmacology, Center for Hypertension Research, Roy J. and Lucille A. Carver College of Medicine, University of Iowa , Iowa City, Iowa ; and Duke-NUS, Singapore and Department of Medicine, Duke University Medical Center , Durham, North Carolina
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