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Visniauskas B, Ogola BO, Kilanowski-Doroh I, Harris NR, Diaz ZT, Horton AC, Blessinger SA, McNally AB, Zimmerman MA, Arnold AC, Lindsey SH. Hypertension disrupts the vascular clock in both sexes. Am J Physiol Heart Circ Physiol 2024; 327:H765-H777. [PMID: 39058434 DOI: 10.1152/ajpheart.00131.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 07/16/2024] [Accepted: 07/22/2024] [Indexed: 07/28/2024]
Abstract
Blood pressure (BP) displays a circadian rhythm and disruptions in this pattern elevate cardiovascular risk. Although both central and peripheral clock genes are implicated in these processes, the importance of vascular clock genes is not fully understood. BP, vascular reactivity, and the renin-angiotensin-aldosterone system display overt sex differences, but whether changes in circadian patterns underlie these differences is unknown. Therefore, we hypothesized that circadian rhythms and vascular clock genes would differ across sex and would be blunted by angiotensin II (ANG II)-induced hypertension. ANG II infusion elevated BP and disrupted circadian patterns similarly in both males and females. In females, an impact on heart rate (HR) and locomotor activity was revealed, whereas in males hypertension suppressed baroreflex sensitivity (BRS). A marked disruption in the vascular expression patterns of period circadian regulator 1 (Per1) and brain and muscle aryl hydrocarbon receptor nuclear translocator like protein 1 (Bmal1) was noted in both sexes. Vascular expression of the G protein-coupled estrogen receptor (Gper1) also showed diurnal synchronization in both sexes that was similar to that of Per1 and Per2 and disrupted by hypertension. In contrast, vascular expression of estrogen receptor 1 (Esr1) showed a diurnal rhythm and hypertension-induced disruption only in females. This study shows a strikingly similar impact of hypertension on BP rhythmicity, vascular clock genes, and vascular estrogen receptor expression in both sexes. We identified a greater impact of hypertension on locomotor activity and heart rate in females and on baroreflex sensitivity in males and also revealed a diurnal regulation of vascular estrogen receptors. These insights highlight the intricate ties between circadian biology, sex differences, and cardiovascular regulation.NEW & NOTEWORTHY This study reveals that ANG II-induced hypertension disrupts the circadian rhythm of blood pressure in both male and female mice, with parallel effects on vascular clock gene and estrogen receptor diurnal patterns. Notably, sex-specific responses to hypertension in terms of locomotor activity, heart rate, and baroreflex sensitivity are revealed. These findings pave the way for chronotherapeutic strategies tailored to mitigate cardiovascular risks associated with disrupted circadian rhythms in hypertension.
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Affiliation(s)
- Bruna Visniauskas
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
| | - Benard O Ogola
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
- Vascular Biology Center and Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, United States
| | - Isabella Kilanowski-Doroh
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
| | - Nicholas R Harris
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
| | - Zaidmara T Diaz
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
| | - Alec C Horton
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
| | - Sophia A Blessinger
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
| | - Alexandra B McNally
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
| | - Margaret A Zimmerman
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
| | - Amy C Arnold
- Department of Neural and Behavioral Sciences, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States
| | - Sarah H Lindsey
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States
- Tulane Center of Excellence in Sex-Based Biology and Medicine, Tulane University, New Orleans, Louisiana, United States
- Tulane Brain Institute, Tulane University, New Orleans, Louisiana, United States
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Czarzasta K, Sztechman D, Zera T, Wojciechowska M, Segiet-Swiecicka A, Puchalska L, Momot K, Joniec-Maciejak I, Machaj E, Sajdel-Sulkowska EM. Age- and sex-dependent cardiovascular impact of maternal perinatal stress and altered dopaminergic metabolism in the medulla oblongata of the offspring. Am J Physiol Heart Circ Physiol 2024; 327:H614-H630. [PMID: 39028279 DOI: 10.1152/ajpheart.00548.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 07/01/2024] [Accepted: 07/15/2024] [Indexed: 07/20/2024]
Abstract
Maternal major depressive disorder with peripartum onset presents health risks to the mother and the developing fetus. Using a rat model of chronic mild stress, we previously reported on the neurodevelopmental impact of maternal perinatal stress on their offspring. This study examined the cardiovascular impact of maternal perinatal stress on their offspring. The cardiovascular impact was assessed in terms of blood pressure and echocardiographic parameters. The results examined by a three-way ANOVA showed a significant association of cardiovascular parameters with maternal perinatal stress and offspring sex and age. Increased blood pressure was observed in adolescent female and adult male offspring of stress-exposed dams. Echocardiography showed an increase in left atrial dimension and a reduction in left ventricular systolic function in adolescent stress-exposed female offspring. Increased interventricular septum thickness at end-diastole and left ventricular diastolic dysfunction were observed in adult stress-exposed male offspring. The underlying mechanisms of cardiovascular impact were examined in stress-exposed adult offspring by assessing the levels of neurotransmitters and their metabolites in the medulla oblongata using high-performance liquid chromatography. A significant decrease in homovanillic acid, a dopamine metabolite and indicator of dopaminergic activity, was observed in adult stress-exposed female offspring. These results suggest a significant sex- and age-dependent impact of maternal stress during the peripartum period on the cardiovascular system in the offspring that extends to adulthood and suggests a multigenerational effect. The presented data urgently need follow-up to confirm their potential clinical and public health relevance.NEW & NOTEWORTHY We demonstrate that maternal perinatal stress is associated with sex- and age-dependent impact on the cardiovascular system in their offspring. The effect was most significant in adolescent female and adult male offspring. Observed changes in hemodynamic parameters and dopaminergic activity of the medulla oblongata are novel results relevant to understanding the cardiovascular impact of maternal perinatal stress on the offspring. The cardiovascular changes observed in adult offspring suggest a potential long-term, multigenerational impact of maternal perinatal stress.
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Affiliation(s)
- Katarzyna Czarzasta
- Laboratory of Centre for Preclinical Research, Department of Experimental and Clinical Physiology, Medical University of Warsaw, Warsaw, Poland
| | - Dorota Sztechman
- Laboratory of Centre for Preclinical Research, Department of Experimental and Clinical Physiology, Medical University of Warsaw, Warsaw, Poland
| | - Tymoteusz Zera
- Laboratory of Centre for Preclinical Research, Department of Experimental and Clinical Physiology, Medical University of Warsaw, Warsaw, Poland
| | - Malgorzata Wojciechowska
- Laboratory of Centre for Preclinical Research, Department of Experimental and Clinical Physiology, Medical University of Warsaw, Warsaw, Poland
| | - Agnieszka Segiet-Swiecicka
- Department of Coronary Artery Disease and Cardiac Rehabilitation, National Institute of Cardiology, Warsaw, Poland
| | - Liana Puchalska
- Laboratory of Centre for Preclinical Research, Department of Experimental and Clinical Physiology, Medical University of Warsaw, Warsaw, Poland
| | - Karol Momot
- Laboratory of Centre for Preclinical Research, Department of Experimental and Clinical Physiology, Medical University of Warsaw, Warsaw, Poland
| | - Ilona Joniec-Maciejak
- Laboratory of Centre for Preclinical Research, Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Warsaw, Poland
| | - Ewa Machaj
- Laboratory of Centre for Preclinical Research, Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Warsaw, Poland
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3
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Hosomi Y, Okamura T, Sakai K, Yuge H, Yoshimura T, Majima S, Okada H, Senmaru T, Ushigome E, Nakanishi N, Satoh T, Akira S, Hamaguchi M, Fukui M. IL-33 Reduces Saturated Fatty Acid Accumulation in Mouse Atherosclerotic Foci. Nutrients 2024; 16:1195. [PMID: 38674885 PMCID: PMC11054828 DOI: 10.3390/nu16081195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/14/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
The cellular and molecular mechanisms of atherosclerosis are still unclear. Type 2 innate lymphocytes (ILC2) exhibit anti-inflammatory properties and protect against atherosclerosis. This study aimed to elucidate the pathogenesis of atherosclerosis development using atherosclerosis model mice (ApoE KO mice) and mice deficient in IL-33 receptor ST2 (ApoEST2 DKO mice). Sixteen-week-old male ApoE KO and ApoEST2 DKO mice were subjected to an 8-week regimen of a high-fat, high-sucrose diet. Atherosclerotic foci were assessed histologically at the aortic valve ring. Chronic inflammation was assessed using flow cytometry and real-time polymerase chain reaction. In addition, saturated fatty acids (palmitic acid) and IL-33 were administered to human aortic endothelial cells (HAECs) to assess fatty acid metabolism. ApoEST2 DKO mice with attenuated ILC2 had significantly worse atherosclerosis than ApoE KO mice. The levels of saturated fatty acids, including palmitic acid, were significantly elevated in the arteries and serum of ApoEST2 DKO mice. Furthermore, on treating HAECs with saturated fatty acids with or without IL-33, the Oil Red O staining area significantly decreased in the IL-33-treated group compared to that in the non-treated group. IL-33 potentially prevented the accumulation of saturated fatty acids within atherosclerotic foci.
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Affiliation(s)
- Yukako Hosomi
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Takuro Okamura
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Kimiko Sakai
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Hiroki Yuge
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Takashi Yoshimura
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Saori Majima
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Hiroshi Okada
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Takafumi Senmaru
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Emi Ushigome
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Naoko Nakanishi
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Takashi Satoh
- Department of Immune Regulation, Graduate School and Faculty of Medicine, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan;
| | - Shizuo Akira
- Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita 565-0871, Japan;
- Laboratory of Host Defense, World Premier Institute Immunology Frontier Research Center, Osaka University, Suita 565-0871, Japan
| | - Masahide Hamaguchi
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
| | - Michiaki Fukui
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan; (Y.H.); (T.O.); (K.S.); (H.Y.); (T.Y.); (S.M.); (H.O.); (T.S.); (E.U.); (N.N.); (M.F.)
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4
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Hopper SE, Weiss D, Mikush N, Jiang B, Spronck B, Cavinato C, Humphrey JD, Figueroa CA. Central Artery Hemodynamics in Angiotensin II-Induced Hypertension and Effects of Anesthesia. Ann Biomed Eng 2024; 52:1051-1066. [PMID: 38383871 DOI: 10.1007/s10439-024-03440-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 12/30/2023] [Indexed: 02/23/2024]
Abstract
Systemic hypertension is a strong risk factor for cardiovascular, neurovascular, and renovascular diseases. Central artery stiffness is both an initiator and indicator of hypertension, thus revealing a critical relationship between the wall mechanics and hemodynamics. Mice have emerged as a critical animal model for studying effects of hypertension and much has been learned. Regardless of the specific mouse model, data on changes in cardiac function and hemodynamics are necessarily measured under anesthesia. Here, we present a new experimental-computational workflow to estimate awake cardiovascular conditions from anesthetized data, which was then used to quantify effects of chronic angiotensin II-induced hypertension relative to normotension in wild-type mice. We found that isoflurane anesthesia had a greater impact on depressing hemodynamics in angiotensin II-infused mice than in controls, which led to unexpected results when comparing anesthetized results between the two groups of mice. Through comparison of the awake simulations, however, in vivo relevant effects of angiotensin II-infusion on global and regional vascular structure, properties, and hemodynamics were found to be qualitatively consistent with expectations. Specifically, we found an increased in vivo vascular stiffness in the descending thoracic aorta and suprarenal abdominal aorta, leading to increases in pulse pressure in the distal aorta. These insights allow characterization of the impact of regionally varying vascular remodeling on hemodynamics and mouse-to-mouse variations due to induced hypertension.
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Affiliation(s)
- S E Hopper
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - D Weiss
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - N Mikush
- Translational Research Imaging Center, Yale School of Medicine, New Haven, CT, USA
| | - B Jiang
- Department of Thyroid and Vascular Surgery, 1st Hospital of China Medical University, Shen Yang, China
| | - B Spronck
- Department of Biomedical Engineering, Maastricht University, Maastricht, The Netherlands
| | - C Cavinato
- LMGC, Universite' Montpellier, CNRS, Montpellier, France
| | - J D Humphrey
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA.
| | - C A Figueroa
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
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5
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Wang P, Ren Z, Wang W, Liu M, Jia Y, Zhang M, Xue Y, Zhang C, Xu J, Wang C, Wang X. Candesartan upregulates angiotensin-converting enzyme 2 in kidneys of male animals by decreased ubiquitination. FASEB J 2024; 38:e23537. [PMID: 38498345 DOI: 10.1096/fj.202302707r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/08/2024] [Accepted: 02/21/2024] [Indexed: 03/20/2024]
Abstract
Candesartan is a common angiotensin-II receptor-1 blocker used for patients with cardiovascular and renal diseases. Angiotensin-converting enzyme 2 (ACE2) is a negative regulator of blood pressure (BP), and also a major receptor for coronaviruses. To determine whether and how candesartan upregulates ACE2, we examined BP and ACE2 in multi-organs from male and female C57BL/6J mice treated with candesartan (1 mg/kg, i.p.) for 7 days. Relative to the vehicle, candesartan lowered BP more in males than females; ACE2 protein abundances were increased in kidneys, not lungs, hearts, aorta, liver, spleen, brain, or serum, only from males. Ace2-mRNA was similar in kidneys. Candesartan also decreased BP in normal, hypertensive, and nephrotic male rats. The renal ACE2 was increased by the drug in normal and nephrotic male rats but not spontaneously hypertensive ones. In male mouse kidneys, ACE2 was distributed at sodium-hydrogen-exchanger-3 positive proximal-convoluted-tubules; ACE2-ubiquitination was decreased by candesartan, accompanied with increased ubiquitin-specific-protease-48 (USP48). In candesartan-treated mouse renal proximal-convoluted-tubule cells, ACE2 abundances and activities were increased while ACE2-ubiquitination and colocalization with lysosomal and proteosomal markers were decreased. The silence of USP48 by siRNA caused a reduction of ACE2 in the cells. Thus, the sex-differential ACE2 upregulation by candesartan in kidney from males may be due to the decreased ACE2-ubiquitination, associated with USP48, and consequent degradation in lysosomes and proteosomes. This is a novel mechanism and may shed light on candesartan-like-drug choice in men and women prone to coronavirus infections.
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Affiliation(s)
- Ping Wang
- The Core Laboratory for Clinical Research, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Zhiyun Ren
- The Core Laboratory for Clinical Research, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Weiwan Wang
- The Core Laboratory for Clinical Research, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Mingda Liu
- The Core Laboratory for Clinical Research, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Yutao Jia
- Department of Nephrology, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Mingzhuo Zhang
- The Core Laboratory for Clinical Research, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Ying Xue
- The Core Laboratory for Clinical Research, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Chenyang Zhang
- Department of Neurology, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Jianteng Xu
- Laboratory Division, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Cheng Wang
- The Department of Pulmonary and Critical Care Medicine, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaoyan Wang
- The Core Laboratory for Clinical Research, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, China
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Rivera DA, Buglione AE, Ray SE, Schaffer CB. MousePZT: A simple, reliable, low-cost device for vital sign monitoring and respiratory gating in mice under anesthesia. PLoS One 2024; 19:e0299047. [PMID: 38437201 PMCID: PMC10911610 DOI: 10.1371/journal.pone.0299047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 02/02/2024] [Indexed: 03/06/2024] Open
Abstract
Small animal studies in biomedical research often require anesthesia to reduce pain or stress experienced by research animals and to minimize motion artifact during imaging or other measurements. Anesthetized animals must be closely monitored for the safety of the animals and to prevent unintended effects of altered physiology on experimental outcomes. Many currently available monitoring devices are expensive, invasive, or interfere with experimental design. Here, we present MousePZT, a low-cost device based on a simple piezoelectric sensor, with a custom circuit and computer software that allows for measurements of both respiratory rate and heart rate in a non-invasive, minimal contact manner. We find the accuracy of the MousePZT device in measuring respiratory and heart rate matches those of commercial systems. Using the widely-used gas isoflurane and injectable ketamine/xylazine combination, we also demonstrate that changes in respiratory rate are more easily detected and can precede changes in heart rate associated with variations in anesthetic depth. Additional circuitry on the device outputs a respiration-locked trigger signal for respiratory-gating of imaging or other data acquisition and has high sensitivity and specificity for detecting respiratory cycles. We provide detailed instruction documents and all necessary microcontroller and computer software, enabling straightforward construction and utilization of this device.
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Affiliation(s)
- Daniel A. Rivera
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America
| | - Anne E. Buglione
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America
- College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Sadie E. Ray
- College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Chris B. Schaffer
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America
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Singh J, Jackson KL, Tang FS, Fu T, Nowell C, Salimova E, Kiriazis H, Ritchie RH, Head GA, Woodman OL, Qin CX. The pro-resolving mediator, annexin A1 regulates blood pressure, and age-associated changes in cardiovascular function and remodeling. FASEB J 2024; 38:e23457. [PMID: 38318648 DOI: 10.1096/fj.202301802r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 12/21/2023] [Accepted: 01/18/2024] [Indexed: 02/07/2024]
Abstract
Aging is associated with chronic, low-level inflammation which may contribute to cardiovascular pathologies such as hypertension and atherosclerosis. This chronic inflammation may be opposed by endogenous mechanisms to limit inflammation, for example, by the actions of annexin A1 (ANXA1), an endogenous glucocorticoid-regulated protein that has anti-inflammatory and pro-resolving activity. We hypothesized the pro-resolving mediator ANXA1 protects against age-induced changes in blood pressure (BP), cardiovascular structure and function, and cardiac senescence. BP was measured monthly in conscious mature (4-month) and middle-aged (12-month) ANXA1-deficient (ANXA1-/- ) and wild-type C57BL/6 mice. Body composition was measured using EchoMRI, and both cardiac and vascular function using ultrasound imaging. Cardiac hypertrophy, fibrosis and senescence, vascular fibrosis, elastin, and calcification were assessed histologically. Gene expression relevant to structural remodeling, inflammation, and cardiomyocyte senescence were also quantified. In C57BL/6 mice, progression from 4 to 12 months of age did not affect the majority of cardiovascular parameters measured, with the exception of mild cardiac hypertrophy, vascular calcium, and collagen deposition. Interestingly, ANXA1-/- mice exhibited higher BP, regardless of age. Additionally, age progression had a marked impact in ANXA1-/- mice, with markedly augmented vascular remodeling, impaired vascular distensibility, and body composition. Consistent with vascular dysfunction, cardiac dysfunction, and hypertrophy were also evident, together with markers of senescence and inflammation. These findings suggest that endogenous ANXA1 plays a critical role in regulating BP, cardiovascular function, and remodeling and delays cardiac senescence. Our findings support the development of novel ANXA1-based therapies to prevent age-related cardiovascular pathologies.
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Affiliation(s)
- Jaideep Singh
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
| | - Kristy L Jackson
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
| | - Feng Shii Tang
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Ting Fu
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Cameron Nowell
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Ekaterina Salimova
- Monash Biomedical Imaging, Monash University, Clayton, Melbourne, Victoria, Australia
| | - Helen Kiriazis
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
- Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Rebecca H Ritchie
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
- Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Geoffrey A Head
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
| | - Owen L Woodman
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Cheng Xue Qin
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
- Department of Pharmacology, School of Pharmaceutical Sciences, Qilu College of Medicine, Shandong University, Jinan, China
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan, China
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8
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Harrison DG, Bader M, Lerman LO, Fink G, Karumanchi SA, Reckelhoff JF, Sequeira-Lopez MLS, Touyz RM. Tail-Cuff Versus Radiotelemetry to Measure Blood Pressure in Mice and Rats. Hypertension 2024; 81:3-5. [PMID: 37990918 PMCID: PMC10842069 DOI: 10.1161/hypertensionaha.123.22329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Affiliation(s)
- D G Harrison
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (D.G.H.)
| | - M Bader
- Max-Delbrück-Center for Molecular Medicine, Berlin, Germany (M.B.)
| | - L O Lerman
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN (L.O.L.)
| | - G Fink
- Department of Pharmacology and Toxicology, Michigan State University, College of Osteopathic Medicine, East Lansing (G.F.)
| | - S A Karumanchi
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA (S.A.K.)
| | - J F Reckelhoff
- Department of Cell and Molecular Biology Women's Health Research Center, University of Mississippi Medical Center, Jackson (J.F.R.)
| | - M L S Sequeira-Lopez
- Department of Paediatrics, University of Virginia, Charlottesville (M.L.S.S.-L.)
| | - R M Touyz
- Research Institute of McGill University Health Centre, McGill University, Montreal, QC, Canada (R.M.T.)
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Staub O, Debonneville A, Stifanelli M, Juffre A, Maillard MP, Gumz ML, Al-Qusairi L. Renal tubular SGK1 is required to achieve blood pressure surge and circadian rhythm. Am J Physiol Renal Physiol 2023; 325:F629-F637. [PMID: 37676758 PMCID: PMC10878722 DOI: 10.1152/ajprenal.00211.2023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/29/2023] [Accepted: 08/29/2023] [Indexed: 09/09/2023] Open
Abstract
Blood pressure (BP) follows a circadian pattern that rises during the active phase of the day (morning surge) and decreases during the inactive (night dipping) phase of the day. The morning surge coincides with increased circulating glucocorticoids and aldosterone, ligands for glucocorticoid receptors and mineralocorticoid receptors, respectively. Serum- and glucocorticoid-induced kinase 1 (SGK1), a clock-controlled and glucocorticoid receptor- and mineralocorticoid receptor-induced gene, plays a role in BP regulation in human and animal models. However, the role of SGK1 in BP circadian regulation has not yet been demonstrated. Using telemetry, we analyzed BP in the inducible renal tubule-specific Sgk1Pax8/LC1 model under basal K+ diet (1% K+) and high-K+ diet (HKD; 5% K+). Our data revealed that, under basal conditions, renal SGK1 plays a minor role in BP regulation; however, after 1 wk of HKD, Sgk1Pax8/LC1 mice exhibited significant defects in diastolic BP (DBP), including a blunted surge, a decreased amplitude, and reduced day/night differences. After prolonged HKD (7 wk), Sgk1Pax8/LC1 mice had lower BP than control mice and exhibited reduced DBP amplitude, together with decreased DBP day/night differences and midline estimating statistic of rhythm (MESOR). Interestingly, renal SGK1 deletion increased pulse pressure, likely secondary to an increase in circulating aldosterone. Taken together, our data suggest that 1) the kidney plays a significant role in setting the BP circadian rhythm; 2) renal tubule SGK1 mediates the BP surge and, thus, the day/night BP difference; 3) long-term renal SGK1 deletion results in lower BP in mutant compared with control mice; and 4) renal SGK1 indirectly regulates pulse pressure due to compensatory alterations in aldosterone levels.NEW & NOTEWORTHY Dysregulation of blood pressure (BP) circadian rhythm is associated with metabolic, cardiovascular, and kidney diseases. Our study provides experimental evidence demonstrating, for the first time, that renal tubule serum- and glucocorticoid-induced kinase 1 (SGK1) plays an essential role in inducing the BP surge. Inhibitors and activators of SGK1 signaling are parts of several therapeutic strategies. Our findings highlight the importance of the drug intake timing to be in phase with SGK1 function to avoid dysregulation of BP circadian rhythm.
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Affiliation(s)
- Olivier Staub
- Department of Biomedical Sciences, University of Lausanne, Lausanne, Switzerland
| | - Anne Debonneville
- Department of Biomedical Sciences, University of Lausanne, Lausanne, Switzerland
| | - Matteo Stifanelli
- Department of Biomedical Sciences, University of Lausanne, Lausanne, Switzerland
| | - Alexandria Juffre
- Division of Nephrology, Department of Physiology and Aging, College of Medicine, University of Florida, Gainesville, Florida, United States
- Center for Integrative Cardiovascular and Metabolic Diseases, University of Florida, Gainesville, Florida, United States
| | - Marc P Maillard
- Division of Nephrology, Lausanne University Hospital, Lausanne, Switzerland
| | - Michelle L Gumz
- Division of Nephrology, Department of Physiology and Aging, College of Medicine, University of Florida, Gainesville, Florida, United States
- Center for Integrative Cardiovascular and Metabolic Diseases, University of Florida, Gainesville, Florida, United States
| | - Lama Al-Qusairi
- Department of Biomedical Sciences, University of Lausanne, Lausanne, Switzerland
- Division of Nephrology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
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10
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Gao Y, Yu W, Song J, Nie J, Cui Z, Wen S, Liu B, Liang H. JMJD3 ablation in myeloid cells confers renoprotection in mice with DOCA/salt-induced hypertension. Hypertens Res 2023; 46:1934-1948. [PMID: 37248323 DOI: 10.1038/s41440-023-01312-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 04/04/2023] [Accepted: 04/28/2023] [Indexed: 05/31/2023]
Abstract
Hypertension-induced renal injury is characterized by robust inflammation and tubulointerstitial fibrosis. Jumonji domain containing-3 (JMJD3) is closely linked with inflammatory response and fibrogenesis. Here we examined the effect of myeloid JMJD3 ablation on kidney inflammation and fibrosis in deoxycorticosterone acetate (DOCA)/salt hypertension. Our results showed that JMJD3 is notably induced in the kidneys with hypertensive injury. DOCA/salt stress causes an elevation in blood pressure that was no difference between myeloid specific JMJD3-deficient mice and wild-type control mice. Compared with wild-type control mice, myeloid JMJD3 ablation ameliorated kidney function and injury of mice in response to DOCA/salt challenge. Myeloid JMJD3 ablation attenuated collagen deposition, extracellular matrix proteins expression, and fibroblasts activation in injured kidneys following DOCA/salt treatment. Furthermore, myeloid JMJD3 ablation blunts inflammatory response in injured kidneys after DOCA/salt stress. Finally, myeloid JMJD3 ablation precluded myeloid myofibroblasts activation and protected against macrophages to myofibroblasts transition in injured kidneys. These beneficial effects were accompanied by reduced expression of interferon regulator factor 4. In summary, JMJD3 ablation in myeloid cells reduces kidney inflammation and fibrosis in DOCA salt-induced hypertension. Inhibition of myeloid JMJD3 may be a novel potential therapeutic target for hypertensive nephropathy. Myeloid JMJD3 deficiency reduces inflammatory response, myeloid fibroblasts activation, macrophages to myofibroblasts transition, and delays kidney fibrosis progression.
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Affiliation(s)
- Ying Gao
- Department of Anesthesiology, The First People's Hospital of Foshan, Foshan, 528000, China
| | - Wenqiang Yu
- Department of Anesthesiology, Foshan Women and Children Hospital, Foshan, 528000, China
| | - Jinfang Song
- Zhuhai Campus, Zunyi Medical University, Zhuhai, 519041, China
| | - Jiayi Nie
- Department of Anesthesiology, The First People's Hospital of Foshan, Foshan, 528000, China
| | - Zichan Cui
- Department of Anesthesiology, Foshan Women and Children Hospital, Foshan, 528000, China
| | - Shihong Wen
- Department of Anesthesiology, Sun Yat-sen University First Affiliated Hospital, Guangzhou, 510080, China
| | - Benquan Liu
- Department of Anesthesiology, The First People's Hospital of Foshan, Foshan, 528000, China.
| | - Hua Liang
- Department of Anesthesiology, Foshan Women and Children Hospital, Foshan, 528000, China.
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11
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Gao Y, Liu B, Guo X, Nie J, Zou H, Wen S, Yu W, Liang H. Interferon regulatory factor 4 deletion protects against kidney inflammation and fibrosis in deoxycorticosterone acetate/salt hypertension. J Hypertens 2023; 41:794-810. [PMID: 36883469 DOI: 10.1097/hjh.0000000000003401] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
BACKGROUND Inflammation and renal interstitial fibrosis are the main pathological features of hypertensive nephropathy. Interferon regulatory factor 4 (IRF-4) has an important role in the pathogenesis of inflammatory and fibrotic diseases. However, its role in hypertension-induced renal inflammation and fibrosis remains unexplored. METHOD AND RESULTS We showed that deoxycorticosterone acetate (DOCA)-salt resulted in an elevation of blood pressure and that there was no difference between wild-type and IRF-4 knockout mice. IRF-4 -/- mice presented less severe renal dysfunction, albuminuria, and fibrotic response after DOCA-salt stress compared with wild-type mice. Loss of IRF-4 inhibited extracellular matrix protein deposition and suppressed fibroblasts activation in the kidneys of mice subjected to DOCA-salt treatment. IRF-4 disruption impaired bone marrow-derived fibroblasts activation and macrophages to myofibroblasts transition in the kidneys in response to DOCA-salt treatment. IRF-4 deletion impeded the infiltration of inflammatory cells and decreased the production of proinflammatory molecules in injured kidneys. IRF-4 deficiency activated phosphatase and tensin homolog and weakened phosphoinositide-3 kinase/AKT signaling pathway in vivo or in vitro . In cultured monocytes, TGFβ1 also induced expression of fibronectin and α-smooth muscle actin and stimulated the transition of macrophages to myofibroblasts, which was blocked in the absence of IRF-4. Finally, macrophages depletion blunted macrophages to myofibroblasts transition, inhibited myofibroblasts accumulation, and ameliorated kidney injury and fibrosis. CONCLUSION Collectively, IRF-4 plays a critical role in the pathogenesis of kidney inflammation and fibrosis in DOCA-salt hypertension.
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Affiliation(s)
- Ying Gao
- Department of Anesthesiology, The First People's Hospital of Foshan, Foshan
| | - Benquan Liu
- Department of Anesthesiology, The First People's Hospital of Foshan, Foshan
| | | | - Jiayi Nie
- Department of Anesthesiology, The First People's Hospital of Foshan, Foshan
| | - Hao Zou
- Department of Anesthesiology, Foshan Women and Children Hospital
- Department of Anesthesiology, Affiliated Foshan Women and Children Hospital of Southern Medical University, Foshan
| | - Shihong Wen
- Department of Anesthesiology, Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Wenqiang Yu
- Department of Anesthesiology, The First People's Hospital of Foshan, Foshan
| | - Hua Liang
- Guangdong Medical University, Zhanjiang
- Department of Anesthesiology, Foshan Women and Children Hospital
- Department of Anesthesiology, Affiliated Foshan Women and Children Hospital of Southern Medical University, Foshan
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12
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Baier J, Rix A, Darguzyte M, Girbig RM, May JN, Palme R, Tolba R, Kiessling F. Repeated Contrast-Enhanced Micro-CT Examinations Decrease Animal Welfare and Influence Tumor Physiology. Invest Radiol 2023; 58:327-336. [PMID: 36730911 DOI: 10.1097/rli.0000000000000936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVES Computed tomography (CT) imaging is considered relatively safe and is often used in preclinical research to study physiological processes. However, the sum of low-dose radiation, anesthesia, and animal handling might impact animal welfare and physiological parameters. This is particularly relevant for longitudinal studies with repeated CT examinations. Therefore, we investigated the influence of repeated native and contrast-enhanced (CE) CT on animal welfare and tumor physiology in regorafenib-treated and nontreated tumor-bearing mice. MATERIAL AND METHODS Mice bearing 4T1 breast cancer were divided into 5 groups: (1) no imaging, (2) isoflurane anesthesia only, (3) 4 mGy CT, (4) 50 mGy CT, and (5) CE-CT (iomeprol). In addition, half of each group was treated with the multikinase inhibitor regorafenib. Mice were imaged 3 times within 1 week under isoflurane anesthesia. Behavioral alterations were investigated by score sheet evaluation, rotarod test, heart rate measurements, and fecal corticosterone metabolite analysis. Tumor growth was measured daily with a caliper. Tumors were excised at the end of the experiment and histologically examined for blood vessel density, perfusion, and cell proliferation. RESULTS According to the score sheet, animals showed a higher burden after anesthesia administration and in addition with CT imaging ( P < 0.001). Motor coordination was not affected by native CT, but significantly decreased after CE-CT in combination with the tumor therapy ( P < 0.001). Whereas tumor growth and blood vessel density were not influenced by anesthesia or imaging, CT-scanned animals had a higher tumor perfusion ( P < 0.001) and a lower tumor cell proliferation ( P < 0.001) for both radiation doses. The most significant difference was observed between the control and CE-CT groups. CONCLUSION Repeated (CE-) CT imaging of anesthetized animals can lead to an impairment of animal motor coordination and, thus, welfare. Furthermore, these standard CT protocols seem to be capable of inducing alterations in tumor physiology when applied repetitively. These potential effects of native and CE-CT should be carefully considered in preclinical oncological research.
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Affiliation(s)
- Jasmin Baier
- From the Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen International University, Aachen, Germany
| | - Anne Rix
- From the Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen International University, Aachen, Germany
| | - Milita Darguzyte
- From the Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen International University, Aachen, Germany
| | - Renée Michèle Girbig
- From the Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen International University, Aachen, Germany
| | - Jan-Niklas May
- From the Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen International University, Aachen, Germany
| | - Rupert Palme
- Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria
| | - René Tolba
- Institute for Laboratory Animal Science and Experimental Surgery, Medical Faculty, RWTH Aachen International University, Aachen, Germany
| | - Fabian Kiessling
- From the Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen International University, Aachen, Germany
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13
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Krzesiak A, Lavoie JL, Sebille S, Cognard C, Bosquet L, Delpech N. Post-exercise hypotension in male spontaneously hypertensive rats: The issue of calculation method. Physiol Rep 2023; 11:e15524. [PMID: 36807709 PMCID: PMC9937782 DOI: 10.14814/phy2.15524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 10/30/2022] [Accepted: 11/07/2022] [Indexed: 02/19/2023] Open
Abstract
In spontaneously hypertensive rats, exercise can lead to a post-exercise decrease in blood pressure, named post-exercise hypotension (PEH). This can be following physical training but also after a single bout of mild to moderate exercise when measured with tail-cuff or externalized catheter methods. Our aim was to assess the PEH obtained with different calculation methods and to compare the magnitude of this effect induced by a moderate-intensity continuous exercise or a high-intensity intermittent exercise. Thirteen 16-week-old male spontaneously hypertensive rats performed two types of aerobic exercise (continuous or intermittent) on a treadmill. Arterial pressure was recorded by telemetry for 24 h which was started 3 h before physical exercise. Based on the literature, PEH was first evaluated with two different baseline values, and then with three different approaches. We observed that the identification of PEH depended on the method used to measure the rest value, and that its amplitude was also influenced by the calculation approach and the type of exercise performed. Hence, the calculation method and the amplitude of the detected PEH can significantly influence their physiological and pathophysiological inferences.
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Affiliation(s)
- Amandine Krzesiak
- Laboratoire MObilité, Vieillissement et Exercice; EA 6314, Faculté des Sciences du SportPoitiersFrance
- Laboratoire Signalisation & Transports Ioniques MembranairesERL CNRS/Université de Poitiers no 7368PoitiersFrance
| | - Julie L. Lavoie
- Centre de recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM)MontréalCanada
- École de kinésiologie et des sciences de l'activité physiqueUniversité de MontréalMontréalCanada
| | - Stéphane Sebille
- Laboratoire Signalisation & Transports Ioniques MembranairesERL CNRS/Université de Poitiers no 7368PoitiersFrance
| | - Christian Cognard
- Laboratoire Signalisation & Transports Ioniques MembranairesERL CNRS/Université de Poitiers no 7368PoitiersFrance
| | - Laurent Bosquet
- Laboratoire MObilité, Vieillissement et Exercice; EA 6314, Faculté des Sciences du SportPoitiersFrance
- École de kinésiologie et des sciences de l'activité physiqueUniversité de MontréalMontréalCanada
| | - Nathalie Delpech
- Laboratoire MObilité, Vieillissement et Exercice; EA 6314, Faculté des Sciences du SportPoitiersFrance
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14
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HDAC Inhibitors Alleviate Uric Acid-Induced Vascular Endothelial Cell Injury by Way of the HDAC6/FGF21/PI3K/AKT Pathway. J Cardiovasc Pharmacol 2023; 81:150-164. [PMID: 36607630 PMCID: PMC9901848 DOI: 10.1097/fjc.0000000000001372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 09/09/2022] [Indexed: 01/07/2023]
Abstract
ABSTRACT Uric acid (UA) accumulation triggers endothelial dysfunction, oxidative stress, and inflammation. Histone deacetylase (HDAC) plays a vital role in regulating the pathological processes of various diseases. However, the influence of HDAC inhibitor on UA-induced vascular endothelial cell injury (VECI) remains undefined. Hence, this study aimed to investigate the effect of HDACs inhibition on UA-induced vascular endothelial cell dysfunction and its detailed mechanism. UA was used to induce human umbilical vein endothelial cell (HUVEC) injury. Meanwhile, potassium oxonate-induced and hypoxanthine-induced hyperuricemia mouse models were also constructed. A broad-spectrum HDAC inhibitor trichostatin A (TSA) or selective HDAC6 inhibitor TubastatinA (TubA) was given to HUVECs or mice to determine whether HDACs can affect UA-induced VECI. The results showed pretreatment of HUVECs with TSA or HDAC6 knockdown-attenuated UA-induced VECI and increased FGF21 expression and phosphorylation of AKT, eNOS, and FoxO3a. These effects could be reversed by FGF21 knockdown. In vivo, both TSA and TubA reduced inflammation and tissue injury while increased FGF21 expression and phosphorylation of AKT, eNOS, and FoxO3a in the aortic and renal tissues of hyperuricemia mice. Therefore, HDACs, especially HDAC6 inhibitor, alleviated UA-induced VECI through upregulating FGF21 expression and then activating the PI3K/AKT pathway. This suggests that HDAC6 may serve as a novel therapeutic target for treating UA-induced endothelial dysfunction.
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15
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Wu Y, Zhao F, Sure VN, Ibrahim A, Yu C, Carr SM, Song P. Human ApoE2 Endows Stronger Contractility in Rat Cardiomyocytes Enhancing Heart Function. Cells 2023; 12:cells12030347. [PMID: 36766690 PMCID: PMC9913850 DOI: 10.3390/cells12030347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/09/2023] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
(1) Background: Apolipoprotein E (ApoE) is a critical plasma apolipoprotein for lipid transport and nonlipid-related functions. Humans possess three isoforms of ApoE (2, 3, and 4). ApoE2, which exhibits beneficial effects on cardiac health, has not been adequately studied. (2) Methods: We investigated the cardiac phenotypes of the humanized ApoE knock-in (hApoE KI) rats and compared to wild-type (WT) and ApoE knock-out (ApoE KO) rats using echocardiography, ultrasound, blood pressure measurements, histology strategies, cell culture, Seahorse XF, cardiomyocyte contractility and intracellular Ca2+ tests, and Western blotting; (3) Results: hApoE2 rats exhibited enhanced heart contractile function without signs of detrimental remodeling. Isolated adult hApoE2 cardiomyocytes had faster and stronger sarcomere contractility because of more mitochondrial energy generation and stimulation-induced fast and elevated intracellular Ca2+ transient. The abundant energy is a result of elevated mitochondrial function via fatty acid β-oxidation. The fast and elevated Ca2+ transient is associated with decreased sarcoplasmic reticulum (SR) Ca2+ ATPase (SERCA2) and increased expression of cardiac ryanodine receptor 2 (RyR2) conducting a potent Ca2+ release from SR.; (4) Conclusions: Our studies validated the association of polymorphic ApoEs with cardiac health in the rat model, and revealed the possible mechanisms of the protective effect of ApoE2 against heart diseases.
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Affiliation(s)
- Yang Wu
- Correspondence: (Y.W.); (P.S.); Tel.: +1-404-413-6636 (P.S.)
| | | | | | | | | | | | - Ping Song
- Correspondence: (Y.W.); (P.S.); Tel.: +1-404-413-6636 (P.S.)
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16
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Tew WY, Tan CS, Yan CS, Loh HW, Wen X, Wei X, Yam MF. Evaluation of vasodilatory effect and antihypertensive effect of chrysin through in vitro and sub-chronic in vivo study. Biomed Pharmacother 2023; 157:114020. [PMID: 36469968 DOI: 10.1016/j.biopha.2022.114020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 11/07/2022] [Accepted: 11/13/2022] [Indexed: 12/05/2022] Open
Abstract
Chrysin, a bioflavonoid belonging to the flavone, occurs naturally in plants such as the passionflower, honey and propolis. Few studies have demonstrated that chrysin can promote vasorelaxant activities in rats' aorta and mesenteric arteries. To date, no research has explored the signalling system routes that chrysin may utilise to produce its vasorelaxant action. Therefore, this study aimed to investigate the underlying mechanisms involved in chrysin-induced vasorelaxant in rats' aortic rings and assess the antihypertensive effect of chrysin in spontaneously hypertensive rats (SHRs). The findings revealed that chrysin utilised both endothelium-dependent and endothelium-independent mechanisms. The presence of L-NAME (endothelial NO synthase inhibitor), ODQ (sGC inhibitor), methylene blue (cGMP lowering agent), 4-AP (voltage-gated potassium channel inhibitor), atropine (muscarinic receptors inhibitor) and propranolol (β-adrenergic receptors inhibitor) significantly reduced the chrysin's vasorelaxant action. Furthermore, chrysin can reduce intracellular Ca2+ levels by limiting the extracellular intake of Ca2+ through voltage-operated calcium channels and blocking the intracellular release of Ca2+ from the sarcoplasmic reticulum via the IP3 receptor. These indicate that chrysin-induced vasorelaxants involved NO/sGC/cGMP signalling cascade, muscarinic and β-adrenergic receptors, also the potassium and calcium channels. Although chrysin had vasorelaxant effects in in vitro studies, the in vivo antihypertensive experiment discovered chrysin does not significantly reduce the blood pressure of SHRs following 21 days of oral treatment. This study proved that chrysin utilised multiple signalling pathways to produce its vasorelaxant effect in the thoracic aorta of rats; however, it had no antihypertensive effect on SHRs.
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Affiliation(s)
- Wan Yin Tew
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Shangjie, Minhou, Fuzhou 350122, Fujian, China; Department of Pharmacology, School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Chu Shan Tan
- Department of Pharmacology, School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Chong Seng Yan
- Department of Pharmacology, School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Hui Wei Loh
- Department of Pharmacology, School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Xu Wen
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Shangjie, Minhou, Fuzhou 350122, Fujian, China
| | - Xu Wei
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Shangjie, Minhou, Fuzhou 350122, Fujian, China.
| | - Mun Fei Yam
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Shangjie, Minhou, Fuzhou 350122, Fujian, China; Department of Pharmacology, School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia.
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17
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Sallais J, Park C, Alahari S, Porter T, Liu R, Kurt M, Farrell A, Post M, Caniggia I. HIF1 inhibitor acriflavine rescues early-onset preeclampsia phenotype in mice lacking placental prolyl hydroxylase domain protein 2. JCI Insight 2022; 7:158908. [PMID: 36227697 PMCID: PMC9746916 DOI: 10.1172/jci.insight.158908] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 09/29/2022] [Indexed: 01/12/2023] Open
Abstract
Preeclampsia is a serious pregnancy disorder that lacks effective treatments other than delivery. Improper sensing of oxygen changes during placentation by prolyl hydroxylases (PHDs), specifically PHD2, causes placental hypoxia-inducible factor-1 (HIF1) buildup and abnormal downstream signaling in early-onset preeclampsia, yet therapeutic targeting of HIF1 has never been attempted. Here we generated a conditional (placenta-specific) knockout of Phd2 in mice (Phd2-/- cKO) to reproduce HIF1 excess and to assess anti-HIF therapy. Conditional deletion of Phd2 in the junctional zone during pregnancy increased placental HIF1 content, resulting in abnormal placentation, impaired remodeling of the uterine spiral arteries, and fetal growth restriction. Pregnant dams developed new-onset hypertension at midgestation (E9.5) in addition to proteinuria and renal and cardiac pathology, hallmarks of severe preeclampsia in humans. Daily injection of acriflavine, a small molecule inhibitor of HIF1, to pregnant Phd2-/- cKO mice from E7.5 (prior to hypertension) or E10.5 (after hypertension had been established) to E14.5 corrected placental dysmorphologies and improved fetal growth. Moreover, it reduced maternal blood pressure and reverted renal and myocardial pathology. Thus, therapeutic targeting of the HIF pathway may improve placental development and function, as well as maternal and fetal health, in preeclampsia.
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Affiliation(s)
- Julien Sallais
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.,Institute of Medical Sciences, and
| | - Chanho Park
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.,Department of Physiology, University of Toronto, Ontario, Canada
| | - Sruthi Alahari
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.,Department of Physiology, University of Toronto, Ontario, Canada
| | - Tyler Porter
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada
| | - Ruizhe Liu
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.,Department of Physiology, University of Toronto, Ontario, Canada
| | - Merve Kurt
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada
| | - Abby Farrell
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.,Institute of Medical Sciences, and
| | - Martin Post
- Institute of Medical Sciences, and,Department of Physiology, University of Toronto, Ontario, Canada.,Program in Translational Medicine, Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Isabella Caniggia
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada.,Institute of Medical Sciences, and,Department of Physiology, University of Toronto, Ontario, Canada.,Department of Obstetrics & Gynaecology, University of Toronto, Ontario, Canada
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18
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Atchison DK, O'Connor CL, Converso-Baran K, Bergin IL, Zhang H, Wang Y, Hartman JR, Ju W, Smrcka AV, Ganesh SK, Bitzer M. Phospholipase Cε insufficiency causes ascending aortic aneurysm and dissection. Am J Physiol Heart Circ Physiol 2022; 323:H1376-H1387. [PMID: 36367690 PMCID: PMC9744656 DOI: 10.1152/ajpheart.00262.2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 10/17/2022] [Accepted: 11/01/2022] [Indexed: 11/13/2022]
Abstract
Phospholipase Cε (PLCε) is a phospholipase C isoform with a wide range of physiological functions. It has been implicated in aortic valve disorders, but its role in frequently associated aortic disease remains unclear. To determine the role of PLCε in thoracic aortic aneurysm and dissection (TAAD) we used PLCε-deficient mice, which develop aortic valve insufficiency and exhibit aortic dilation of the ascending thoracic aorta and arch without histopathological evidence of injury. Fourteen days of infusion of Plce1+/+ and Plce1-/- mice with angiotensin II (ANG II), which induces aortic dilation and dissection, led to sudden death secondary to ascending aortic dissection in 43% of Plce1-/- versus 5% of Plce1+/+ mice (P < 0.05). Medial degeneration and TAAD were detected in 80% of Plce1-/- compared with 10% of Plce1+/+ mice (P < 0.05) after 4 days of ANG II. Treatment with ANG II markedly increased PLCε expression within the ascending aortic adventitia. Total RNA sequencing demonstrated marked upregulation of inflammatory and fibrotic pathways mediated by interleukin-1β, interleukin-6, and tumor necrosis factor-α. In silico analysis of whole exome sequences of 258 patients with type A dissection identified 5 patients with nonsynonymous PLCE1 variants. Our data suggest that PLCε deficiency plays a role in the development of TAAD and aortic insufficiency.NEW & NOTEWORTHY We describe a novel phenotype by which PLCε deficiency predisposes to aortic valve insufficiency and ascending aortic aneurysm, dissection, and sudden death in the setting of ANG II-mediated hypertension. We demonstrate PLCE1 variants in patients with type A aortic dissection and aortic insufficiency, suggesting that PLCE1 may also play a role in human aortic disease. This finding is of very high significance because it has not been previously demonstrated that PLCε directly mediates aortic dissection.
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Affiliation(s)
- Douglas K Atchison
- Division of Nephrology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
- Division of Nephrology and Hypertension, Department of Internal Medicine, Henry Ford Hospital, Detroit, Michigan
| | - Christopher L O'Connor
- Division of Nephrology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Kimber Converso-Baran
- Frankel Cardiovascular Center Physiology and Phenotyping Core, University of Michigan, Ann Arbor, Michigan
| | - Ingrid L Bergin
- Unit for Laboratory Animal Medicine, University of Michigan, Ann Arbor, Michigan
- In Vivo Animal Core Facility, University of Michigan, Ann Arbor, Michigan
| | - Hongyu Zhang
- Division of Nephrology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Yu Wang
- Cardiovascular Division, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - John R Hartman
- Division of Nephrology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Wenjun Ju
- Division of Nephrology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Alan V Smrcka
- Department of Pharmacology, University of Michigan, Ann Arbor, Michigan
| | - Santhi K Ganesh
- Cardiovascular Division, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Markus Bitzer
- Division of Nephrology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
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19
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de Couto G, Mesquita T, Wu X, Rajewski A, Huang F, Akhmerov A, Na N, Wu D, Wang Y, Li L, Tran M, Kilfoil P, Cingolani E, Marbán E. Cell therapy attenuates endothelial dysfunction in hypertensive rats with heart failure and preserved ejection fraction. Am J Physiol Heart Circ Physiol 2022; 323:H892-H903. [PMID: 36083797 PMCID: PMC9602891 DOI: 10.1152/ajpheart.00287.2022] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/24/2022] [Accepted: 09/06/2022] [Indexed: 12/14/2022]
Abstract
Heart failure with preserved ejection fraction (HFpEF) is defined by increased left ventricular (LV) stiffness, impaired vascular compliance, and fibrosis. Although systemic inflammation, driven by comorbidities, has been proposed to play a key role, the precise pathogenesis remains elusive. To test the hypothesis that inflammation drives endothelial dysfunction in HFpEF, we used cardiosphere-derived cells (CDCs), which reduce inflammation and fibrosis, improving function, structure, and survival in HFpEF rats. Dahl salt-sensitive rats fed a high-salt diet developed HFpEF, as manifested by diastolic dysfunction, systemic inflammation, and accelerated mortality. Rats were randomly allocated to receive intracoronary infusion of CDCs or vehicle. Two weeks later, inflammation, oxidative stress, and endothelial function were analyzed. Single-cell RNA sequencing of heart tissue was used to assay transcriptomic changes. CDCs improved endothelial-dependent vasodilation while reducing oxidative stress and restoring endothelial nitric oxide synthase (eNOS) expression. RNA sequencing revealed CDC-induced attenuation of pathways underlying endothelial cell leukocyte binding and innate immunity. Exposure of endothelial cells to CDC-secreted extracellular vesicles in vitro reduced VCAM-1 protein expression and attenuated monocyte adhesion and transmigration. Cell therapy with CDCs corrects diastolic dysfunction, reduces oxidative stress, and restores vascular reactivity. These findings lend credence to the hypothesis that inflammatory changes of the vascular endothelium are important, if not central, to HFpEF pathogenesis.NEW & NOTEWORTHY We tested the concept that inflammation of endothelial cells is a major pathogenic factor in HFpEF. CDCs are heart-derived cell products with verified anti-inflammatory therapeutic properties. Infusion of CDCs reduced oxidative stress, restored eNOS abundance, lowered monocyte levels, and rescued the expression of multiple disease-associated genes, thereby restoring vascular reactivity. The salutary effects of CDCs support the hypothesis that inflammation of endothelial cells is a proximate driver of HFpEF.
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Affiliation(s)
- Geoffrey de Couto
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Thassio Mesquita
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Xiaokang Wu
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Alex Rajewski
- Applied Genomics, Computation and Translational Core, Cedars-Sinai Cancer, Cedars-Sinai Medical Center, Los Angeles, California
| | - Feng Huang
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | | | - Na Na
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Di Wu
- Applied Genomics, Computation and Translational Core, Cedars-Sinai Cancer, Cedars-Sinai Medical Center, Los Angeles, California
| | - Yizhou Wang
- Applied Genomics, Computation and Translational Core, Cedars-Sinai Cancer, Cedars-Sinai Medical Center, Los Angeles, California
| | - Liang Li
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - My Tran
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Peter Kilfoil
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Eugenio Cingolani
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Eduardo Marbán
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
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20
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Kulhanek D, Abrahante Llorens JE, Buckley L, Tkac I, Rao R, Paulsen ME. Female and male C57BL/6J offspring exposed to maternal obesogenic diet develop altered hypothalamic energy metabolism in adulthood. Am J Physiol Endocrinol Metab 2022; 323:E448-E466. [PMID: 36342228 PMCID: PMC9639756 DOI: 10.1152/ajpendo.00100.2022] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 08/12/2022] [Accepted: 09/12/2022] [Indexed: 11/22/2022]
Abstract
Maternal obesity is exceedingly common and strongly linked to offspring obesity and metabolic disease. Hypothalamic function is critical to obesity development. Hypothalamic mechanisms causing obesity following exposure to maternal obesity have not been elucidated. Therefore, we studied a cohort of C57BL/6J dams, treated with a control or high-fat-high-sugar diet, and their adult offspring to explore potential hypothalamic mechanisms to explain the link between maternal and offspring obesity. Dams treated with obesogenic diet were heavier with mild insulin resistance, which is reflective of the most common metabolic disease in pregnancy. Adult offspring exposed to maternal obesogenic diet had no change in body weight but significant increase in fat mass, decreased glucose tolerance, decreased insulin sensitivity, elevated plasma leptin, and elevated plasma thyroid-stimulating hormone. In addition, offspring exposed to maternal obesity had decreased energy intake and activity without change in basal metabolic rate. Hypothalamic neurochemical profile and transcriptome demonstrated decreased neuronal activity and inhibition of oxidative phosphorylation. Collectively, these results indicate that maternal obesity without diabetes is associated with adiposity and decreased hypothalamic energy production in offspring. We hypothesize that altered hypothalamic function significantly contributes to obesity development. Future studies focused on neuroprotective strategies aimed to improve hypothalamic function may decrease obesity development.NEW & NOTEWORTHY Offspring exposed to maternal diet-induced obesity demonstrate a phenotype consistent with energy excess. Contrary to previous studies, the observed energy phenotype was not associated with hyperphagia or decreased basal metabolic rate but rather decreased hypothalamic neuronal activity and energy production. This was supported by neurochemical changes in the hypothalamus as well as inhibition of hypothalamic oxidative phosphorylation pathway. These results highlight the potential for neuroprotective interventions in the prevention of obesity with fetal origins.
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Affiliation(s)
- Debra Kulhanek
- Division of Neonatology, Department of Pediatrics, University of Minnesota Medical School, Minneapolis, Minnesota
| | | | - Lauren Buckley
- Division of Neonatology, Department of Pediatrics, University of Minnesota Medical School, Minneapolis, Minnesota
| | - Ivan Tkac
- Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota Medical School, Minneapolis, Minnesota
| | - Raghavendra Rao
- Division of Neonatology, Department of Pediatrics, University of Minnesota Medical School, Minneapolis, Minnesota
- Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota Medical School, Minneapolis, Minnesota
| | - Megan E Paulsen
- Division of Neonatology, Department of Pediatrics, University of Minnesota Medical School, Minneapolis, Minnesota
- Minnesota Institute for the Developing Brain, Minneapolis, Minnesota
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21
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Bapat A, Li G, Xiao L, Yeri A, Hulsmans M, Grune J, Yamazoe M, Schloss MJ, Iwamoto Y, Tedeschi J, Yang X, Nahrendorf M, Rosenzweig A, Ellinor PT, Das S, Milan D. Genetic inhibition of serum glucocorticoid kinase 1 prevents obesity-related atrial fibrillation. JCI Insight 2022; 7:160885. [PMID: 35998035 PMCID: PMC9675459 DOI: 10.1172/jci.insight.160885] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 08/19/2022] [Indexed: 01/19/2023] Open
Abstract
Obesity is an important risk factor for atrial fibrillation (AF), but a better mechanistic understanding of obesity-related atrial fibrillation is required. Serum glucocorticoid kinase 1 (SGK1) is a kinase positioned within multiple obesity-related pathways, and prior work has shown a pathologic role of SGK1 signaling in ventricular arrhythmias. We validated a mouse model of obesity-related AF using wild-type mice fed a high-fat diet. RNA sequencing of atrial tissue demonstrated substantial differences in gene expression, with enrichment of multiple SGK1-related pathways, and we showed upregulated of SGK1 transcription, activation, and signaling in obese atria. Mice expressing a cardiac specific dominant-negative SGK1 were protected from obesity-related AF, through effects on atrial electrophysiology, action potential characteristics, structural remodeling, inflammation, and sodium current. Overall, this study demonstrates the promise of targeting SGK1 in a mouse model of obesity-related AF.
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Affiliation(s)
- Aneesh Bapat
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Demoulas Family Foundation Center for Cardiac Arrhythmias, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Guoping Li
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Ling Xiao
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Ashish Yeri
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Maarten Hulsmans
- Center for Systems Biology, Massachusetts General Hospital Research Institute and Harvard Medical School, Boston, Massachusetts, USA
- Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Jana Grune
- Center for Systems Biology, Massachusetts General Hospital Research Institute and Harvard Medical School, Boston, Massachusetts, USA
- Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts, USA
- German Centre for Cardiovascular Research, Berlin, Germany
| | - Masahiro Yamazoe
- Center for Systems Biology, Massachusetts General Hospital Research Institute and Harvard Medical School, Boston, Massachusetts, USA
- Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Maximilian J. Schloss
- Center for Systems Biology, Massachusetts General Hospital Research Institute and Harvard Medical School, Boston, Massachusetts, USA
- Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Yoshiko Iwamoto
- Center for Systems Biology, Massachusetts General Hospital Research Institute and Harvard Medical School, Boston, Massachusetts, USA
- Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Justin Tedeschi
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Xinyu Yang
- Fangshan Hospital of Beijing, University of Traditional Chinese Medicine, Beijing, China
| | - Matthias Nahrendorf
- Center for Systems Biology, Massachusetts General Hospital Research Institute and Harvard Medical School, Boston, Massachusetts, USA
- Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Internal Medicine I, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Anthony Rosenzweig
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Patrick T. Ellinor
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Demoulas Family Foundation Center for Cardiac Arrhythmias, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Saumya Das
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Demoulas Family Foundation Center for Cardiac Arrhythmias, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - David Milan
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Leducq Foundation, Boston, Massachusetts, USA
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22
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Hypotensive effects of melatonin in rats: Focus on the model, measurement, application, and main mechanisms. Hypertens Res 2022; 45:1929-1944. [PMID: 36123396 DOI: 10.1038/s41440-022-01031-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 11/08/2022]
Abstract
The hypotensive effects of melatonin are based on a negative correlation between melatonin levels and blood pressure in humans. However, there is a positive correlation in nocturnal animals that are often used as experimental models in cardiovascular research, and the hypotensive effects and mechanism of melatonin action are often investigated in rats and mice. In rats, the hypotensive effects of melatonin have been studied in normotensive and spontaneously or experimentally induced hypertensive strains. In experimental animals, blood pressure is often measured indirectly during the light (passive) phase of the day by tail-cuff plethysmography, which has limitations regarding data quality and animal well-being compared to telemetry. Melatonin is administered to rats in drinking water, subcutaneously, intraperitoneally, or microinjected into specific brain areas at different times. Experimental data show that the hypotensive effects of melatonin depend on the experimental animal model, blood pressure measurement technique, and the route, time and duration of melatonin administration. The hypotensive effects of melatonin may be mediated through specific membrane G-coupled receptors located in the heart and arteries. Due to melatonin's lipophilic nature, its potential hypotensive effects can interfere with various regulatory mechanisms, such as nitric oxide and reactive oxygen species production and activation of the autonomic nervous and circadian systems. Based on the research conducted on rats, the cardiovascular effects of melatonin are modulatory, delayed, and indirect.
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23
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Kowalewska PM, Fletcher J, Jackson WF, Brett SE, Kim MS, Mironova GY, Haghbin N, Richter DM, Tykocki NR, Nelson MT, Welsh DG. Genetic ablation of smooth muscle K IR2.1 is inconsequential to the function of mouse cerebral arteries. J Cereb Blood Flow Metab 2022; 42:1693-1706. [PMID: 35410518 PMCID: PMC9441723 DOI: 10.1177/0271678x221093432] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Cerebral blood flow is a finely tuned process dependent on coordinated changes in arterial tone. These changes are strongly tied to smooth muscle membrane potential and inwardly rectifying K+ (KIR) channels are thought to be a key determinant. To elucidate the role of KIR2.1 in cerebral arterial tone development, this study examined the electrical and functional properties of cells, vessels and living tissue from tamoxifen-induced smooth muscle cell (SMC)-specific KIR2.1 knockout mice. Patch-clamp electrophysiology revealed a robust Ba2+-sensitive inwardly rectifying K+ current in cerebral arterial myocytes irrespective of KIR2.1 knockout. Immunolabeling clarified that KIR2.1 expression was low in SMCs while KIR2.2 labeling was remarkably abundant at the membrane. In alignment with these observations, pressure myography revealed that the myogenic response and K+-induced dilation were intact in cerebral arteries post knockout. At the whole organ level, this translated to a maintenance of brain perfusion in SMC KIR2.1-/- mice, as assessed with arterial spin-labeling MRI. We confirmed these findings in superior epigastric arteries and implicated KIR2.2 as more functionally relevant in SMCs. Together, these results suggest that subunits other than KIR2.1 play a significant role in setting native current in SMCs and driving arterial tone.
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Affiliation(s)
- Paulina M Kowalewska
- Robarts Research Institute and the Department of Physiology & Pharmacology, University of Western Ontario, London, ON, Canada
| | - Jacob Fletcher
- Robarts Research Institute and the Department of Physiology & Pharmacology, University of Western Ontario, London, ON, Canada
| | - William F Jackson
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, USA
| | - Suzanne E Brett
- Robarts Research Institute and the Department of Physiology & Pharmacology, University of Western Ontario, London, ON, Canada
| | - Michelle Sm Kim
- Robarts Research Institute and the Department of Physiology & Pharmacology, University of Western Ontario, London, ON, Canada
| | - Galina Yu Mironova
- Robarts Research Institute and the Department of Physiology & Pharmacology, University of Western Ontario, London, ON, Canada
| | - Nadia Haghbin
- Robarts Research Institute and the Department of Physiology & Pharmacology, University of Western Ontario, London, ON, Canada
| | - David M Richter
- Robarts Research Institute and the Department of Physiology & Pharmacology, University of Western Ontario, London, ON, Canada
| | - Nathan R Tykocki
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, USA
| | - Mark T Nelson
- Department of Pharmacology, University of Vermont, Burlington, VT, USA
| | - Donald G Welsh
- Robarts Research Institute and the Department of Physiology & Pharmacology, University of Western Ontario, London, ON, Canada
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24
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Phosphodiesterase 4D contributes to angiotensin II-induced abdominal aortic aneurysm through smooth muscle cell apoptosis. EXPERIMENTAL & MOLECULAR MEDICINE 2022; 54:1201-1213. [PMID: 35999453 PMCID: PMC9440214 DOI: 10.1038/s12276-022-00815-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 05/05/2022] [Accepted: 05/09/2022] [Indexed: 11/08/2022]
Abstract
Abdominal aortic aneurysm (AAA) is a permanent expansion of the abdominal aorta that has a high mortality but limited treatment options. Phosphodiesterase (PDE) 4 family members are cAMP-specific hydrolyzing enzymes and have four isoforms (PDE4A-PDE4D). Several pan-PDE4 inhibitors are used clinically. However, the regulation and function of PDE4 in AAA remain largely unknown. Herein, we showed that PDE4D expression is upregulated in human and angiotensin II-induced mouse AAA tissues using RT-PCR, western blotting, and immunohistochemical staining. Furthermore, smooth muscle cell (SMC)-specific Pde4d knockout mice showed significantly reduced vascular destabilization and AAA development in an experimental AAA model. The PDE4 inhibitor rolipram also suppressed vascular pathogenesis and AAA formation in mice. In addition, PDE4D deficiency inhibited caspase 3 cleavage and SMC apoptosis in vivo and in vitro, as shown by bulk RNA-seq, western blotting, flow cytometry and TUNEL staining. Mechanistic studies revealed that PDE4D promotes apoptosis by suppressing the activation of cAMP-activated protein kinase A (PKA) instead of the exchange protein directly activated by cAMP (Epac). Additionally, the phosphorylation of BCL2-antagonist of cell death (Bad) was reversed by PDE4D siRNA in vitro, which indicates that PDE4D regulates SMC apoptosis via the cAMP-PKA-pBad axis. Overall, these findings indicate that PDE4D upregulation in SMCs plays a causative role in AAA development and suggest that pharmacological inhibition of PDE4 may represent a potential therapeutic strategy.
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25
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Jorgensen AN, Abdullah CS, Bhuiyan MS, Watt M, Dominic P, Kolluru GK, Kevil CG, Nam HW. Neurogranin regulates calcium-dependent cardiac hypertrophy. Exp Mol Pathol 2022; 127:104815. [PMID: 35870494 PMCID: PMC11118017 DOI: 10.1016/j.yexmp.2022.104815] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 04/15/2022] [Accepted: 07/16/2022] [Indexed: 11/04/2022]
Abstract
Intracellular Ca2+-calmodulin (CaM) signaling plays an important role in Ca2+-CaM-dependent kinase (CaMKII) and calcineurin (CaN)-mediated cardiac biology. While neurogranin (Ng) is known as a major Ca2+-CaM modulator in the brain, its pathophysiological role in cardiac hypertrophy has never been studied before. In the present study, we report that Ng is expressed in the heart and depletion of Ng dysregulates Ca2+ homeostasis and promotes cardiac failure in mice. 10-month-old Ng null mice demonstrate significantly increased heart-to-body weight ratios compared to wild-type. Using histological approaches, we identified that depletion of Ng increases cardiac hypertrophy, fibrosis, and collagen deposition near perivascular areas in the heart tissue of Ng null mice. Ca2+ spark experiments revealed that cardiac myocytes isolated from Ng null mice have decreased spark frequency and width, while the duration of sparks is significantly increased. We also identified that a lack of Ng increases CaMKIIδ signaling and periostin protein expression in these mouse hearts. Overall, we are the first study to explore how Ng expression in the heart plays an important role in Ca2+ homeostasis in cardiac myocytes as well as the pathophysiology of cardiac hypertrophy and fibrosis.
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Affiliation(s)
- Ashton N Jorgensen
- Department of Pharmacology, Toxicology, and Neuroscience, Louisiana State University Health Sciences Center, Shreveport, LA 71130, United States of America
| | - Chowdhury S Abdullah
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport, LA 71130, United States of America
| | - Md Shenuarin Bhuiyan
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport, LA 71130, United States of America
| | - Megan Watt
- Devision of Cardiology, Louisiana State University Health Sciences Center, Shreveport, LA 71130, United States of America
| | - Paari Dominic
- Devision of Cardiology, Louisiana State University Health Sciences Center, Shreveport, LA 71130, United States of America
| | - Gopi K Kolluru
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport, LA 71130, United States of America
| | - Christopher G Kevil
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport, LA 71130, United States of America
| | - Hyung W Nam
- Department of Pharmacology, Toxicology, and Neuroscience, Louisiana State University Health Sciences Center, Shreveport, LA 71130, United States of America.
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26
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Cardiorenal protective effects of sodium-glucose cotransporter 2 inhibition in combination with angiotensin II type 1 receptor blockade in salt-sensitive Dahl rats. J Hypertens 2022; 40:956-968. [DOI: 10.1097/hjh.0000000000003099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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27
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Luderer U, Lim J, Ortiz L, Nguyen JD, Shin JH, Allen BD, Liao LS, Malott K, Perraud V, Wingen LM, Arechavala RJ, Bliss B, Herman DA, Kleinman MT. Exposure to environmentally relevant concentrations of ambient fine particulate matter (PM 2.5) depletes the ovarian follicle reserve and causes sex-dependent cardiovascular changes in apolipoprotein E null mice. Part Fibre Toxicol 2022; 19:5. [PMID: 34996492 PMCID: PMC8740366 DOI: 10.1186/s12989-021-00445-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 12/23/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Fine particulate matter (PM2.5) exposure accelerates atherosclerosis and contains known ovotoxic chemicals. However, effects of exposure to PM2.5 on the finite ovarian follicle pool have hardly been investigated, nor have interactions between ovarian and cardiovascular effects. We hypothesized that subchronic inhalation exposure to human-relevant concentrations of PM2.5 results in destruction of ovarian follicles via apoptosis induction, as well as accelerated recruitment of primordial follicles into the growing pool. Further, we hypothesized that destruction of ovarian follicles enhances the adverse cardiovascular effects of PM2.5 in females. RESULTS Hyperlipidemic apolipoprotein E (Apoe) null ovary-intact or ovariectomized female mice and testis-intact male mice were exposed to concentrated ambient PM2.5 or filtered air for 12 weeks, 5 days/week for 4 h/day using a versatile aerosol concentration enrichment system. Primordial, primary, and secondary ovarian follicle numbers were decreased by 45%, 40%, and 17%, respectively, in PM2.5-exposed ovary-intact mice compared to controls (P < 0.05). The percentage of primary follicles with granulosa cells positive for the mitosis marker Ki67 was increased in the ovaries from PM2.5-exposed females versus controls (P < 0.05), consistent with increased recruitment of primordial follicles into the growing pool. Exposure to PM2.5 increased the percentages of primary and secondary follicles with DNA damage, assessed by γH2AX immunostaining (P < 0.05). Exposure to PM2.5 increased the percentages of apoptotic antral follicles, determined by TUNEL and activated caspase 3 immunostaining (P < 0.05). Removal of the ovaries and PM2.5-exposure exacerbated the atherosclerotic effects of hyperlipidemia in females (P < 0.05). While there were statistically significant changes in blood pressure and heart rate variability in PM2.5-compared to Air-exposed gonad-intact males and females and ovariectomized females, the changes were not consistent between exposure years and assessment methods. CONCLUSIONS These results demonstrate that subchronic PM2.5 exposure depletes the ovarian reserve by increasing recruitment of primordial follicles into the growing pool and increasing apoptosis of growing follicles. Further, PM2.5 exposure and removal of the ovaries each increase atherosclerosis progression in Apoe-/- females. Premature loss of ovarian function is associated with increased risk of osteoporosis, cardiovascular disease and Alzheimer's disease in women. Our results thus support possible links between PM2.5 exposure and other adverse health outcomes in women.
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Affiliation(s)
- Ulrike Luderer
- grid.266093.80000 0001 0668 7243Department of Environmental and Occupational Health, University of California Irvine, 100 Theory Drive, Suite 100, Irvine, CA 92617 USA ,grid.266093.80000 0001 0668 7243Center for Occupational and Environmental Health, University of California Irvine, 100 Theory Drive, Suite 100, Irvine, CA 92617 USA ,grid.266093.80000 0001 0668 7243Department of Developmental and Cell Biology, University of California Irvine, Irvine, CA 92617 USA ,grid.266093.80000 0001 0668 7243Department of Medicine, University of California Irvine, Irvine, CA 92617 USA
| | - Jinhwan Lim
- grid.266093.80000 0001 0668 7243Department of Environmental and Occupational Health, University of California Irvine, 100 Theory Drive, Suite 100, Irvine, CA 92617 USA
| | - Laura Ortiz
- grid.266093.80000 0001 0668 7243Department of Medicine, University of California Irvine, Irvine, CA 92617 USA
| | - Johnny D. Nguyen
- grid.266093.80000 0001 0668 7243Department of Medicine, University of California Irvine, Irvine, CA 92617 USA
| | - Joyce H. Shin
- grid.266093.80000 0001 0668 7243Department of Environmental and Occupational Health, University of California Irvine, 100 Theory Drive, Suite 100, Irvine, CA 92617 USA ,grid.266093.80000 0001 0668 7243Department of Medicine, University of California Irvine, Irvine, CA 92617 USA
| | - Barrett D. Allen
- grid.266093.80000 0001 0668 7243Department of Environmental and Occupational Health, University of California Irvine, 100 Theory Drive, Suite 100, Irvine, CA 92617 USA
| | - Lisa S. Liao
- grid.266093.80000 0001 0668 7243Department of Medicine, University of California Irvine, Irvine, CA 92617 USA
| | - Kelli Malott
- grid.266093.80000 0001 0668 7243Department of Environmental and Occupational Health, University of California Irvine, 100 Theory Drive, Suite 100, Irvine, CA 92617 USA ,grid.266093.80000 0001 0668 7243Department of Developmental and Cell Biology, University of California Irvine, Irvine, CA 92617 USA
| | - Veronique Perraud
- grid.266093.80000 0001 0668 7243Department of Chemistry, University of California Irvine, Irvine, CA 92617 USA
| | - Lisa M. Wingen
- grid.266093.80000 0001 0668 7243Department of Chemistry, University of California Irvine, Irvine, CA 92617 USA
| | - Rebecca J. Arechavala
- grid.266093.80000 0001 0668 7243Department of Environmental and Occupational Health, University of California Irvine, 100 Theory Drive, Suite 100, Irvine, CA 92617 USA ,grid.266093.80000 0001 0668 7243Department of Medicine, University of California Irvine, Irvine, CA 92617 USA
| | - Bishop Bliss
- grid.266093.80000 0001 0668 7243Department of Environmental and Occupational Health, University of California Irvine, 100 Theory Drive, Suite 100, Irvine, CA 92617 USA ,grid.266093.80000 0001 0668 7243Department of Medicine, University of California Irvine, Irvine, CA 92617 USA
| | - David A. Herman
- grid.266093.80000 0001 0668 7243Department of Medicine, University of California Irvine, Irvine, CA 92617 USA
| | - Michael T. Kleinman
- grid.266093.80000 0001 0668 7243Department of Environmental and Occupational Health, University of California Irvine, 100 Theory Drive, Suite 100, Irvine, CA 92617 USA ,grid.266093.80000 0001 0668 7243Center for Occupational and Environmental Health, University of California Irvine, 100 Theory Drive, Suite 100, Irvine, CA 92617 USA ,grid.266093.80000 0001 0668 7243Department of Medicine, University of California Irvine, Irvine, CA 92617 USA
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Ge W, Guo X, Song X, Pang J, Zou X, Liu Y, Niu Y, Li Z, Zhao H, Gao R, Wang J. OUP accepted manuscript. Cardiovasc Res 2022; 118:2985-2999. [PMID: 35048969 DOI: 10.1093/cvr/cvac010] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 01/15/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Weipeng Ge
- Department of Pathophysiology, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Dongdansantiao 5, Dongcheng District, Beijing 100730, China
| | - Xiaoxiao Guo
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Xiaomin Song
- Department of Pathophysiology, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Dongdansantiao 5, Dongcheng District, Beijing 100730, China
| | - Junling Pang
- Department of Pathophysiology, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Dongdansantiao 5, Dongcheng District, Beijing 100730, China
| | - Xuan Zou
- Department of Pathophysiology, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Dongdansantiao 5, Dongcheng District, Beijing 100730, China
| | - Yonglin Liu
- Shenmu Hospital, The Affiliated Shenmu Hospital of Northwest University, Shaanxi Province, Shenmu 719300, China
| | - Yongliang Niu
- Shenmu Hospital, The Affiliated Shenmu Hospital of Northwest University, Shaanxi Province, Shenmu 719300, China
| | - Zhengqing Li
- Shenmu Hospital, The Affiliated Shenmu Hospital of Northwest University, Shaanxi Province, Shenmu 719300, China
| | - Hongmei Zhao
- Department of Pathophysiology, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Dongdansantiao 5, Dongcheng District, Beijing 100730, China
| | - Ran Gao
- Department of Pathophysiology, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Dongdansantiao 5, Dongcheng District, Beijing 100730, China
| | - Jing Wang
- Department of Pathophysiology, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Dongdansantiao 5, Dongcheng District, Beijing 100730, China
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Thapa D, Barrett B, Argunhan F, Brain SD. Influence of Cold-TRP Receptors on Cold-Influenced Behaviour. Pharmaceuticals (Basel) 2021; 15:ph15010042. [PMID: 35056099 PMCID: PMC8781072 DOI: 10.3390/ph15010042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/23/2021] [Accepted: 12/23/2021] [Indexed: 12/14/2022] Open
Abstract
The transient receptor potential (TRP) channels, TRPA1 and TRPM8, are thermo-receptors that detect cold and cool temperatures and play pivotal roles in mediating the cold-induced vascular response. In this study, we investigated the role of TRPA1 and TRPM8 in the thermoregulatory behavioural responses to environmental cold exposure by measuring core body temperature and locomotor activity using a telemetry device that was surgically implanted in mice. The core body temperature of mice that were cooled at 4 °C over 3 h was increased and this was accompanied by an increase in UCP-1 and TRPM8 level as detected by Western blot. We then established an effective route, by which the TRP antagonists could be administered orally with palatable food. This avoids the physical restraint of mice, which is crucial as that could influence the behavioural results. Using selective pharmacological antagonists A967079 and AMTB for TRPA1 and TRPM8 receptors, respectively, we show that TRPM8, but not TRPA1, plays a direct role in thermoregulation response to whole body cold exposure in the mouse. Additionally, we provide evidence of increased TRPM8 levels after cold exposure which could be a protective response to increase core body temperature to counter cold.
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Molcan L. Telemetric data collection should be standard in modern experimental cardiovascular research. Physiol Behav 2021; 242:113620. [PMID: 34637804 DOI: 10.1016/j.physbeh.2021.113620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 10/05/2021] [Accepted: 10/07/2021] [Indexed: 02/07/2023]
Abstract
Cardiovascular (CV) health is often expressed by changes in heart rate and blood pressure, the physiological record of which may be affected by moving, anaesthesia, handling, time of day and many other factors in rodents. Telemetry measurement minimises these modulations and enables more accurate physiological recording of heart rate and blood pressure than non-invasive methods. Measurement of arterial blood pressure by telemetry requires implanting a catheter tip into the artery. Telemetry enables us to sample physiological parameters with a high frequency continuously for several months. By measuring the pressure in the artery using telemetry, we can visualize pressure changes over a heart cycle as the pressure wave. From the pressure wave, we can subtract systolic, diastolic, mean and pulse pressure. From the beat-to-beat interval (pressure wave) and the RR' interval (electrocardiogram), we can derive the heart rate. From beat-to-beat variability, we can evaluate the autonomic nervous system's activity and spontaneous baroreflex sensitivity and their impact on CV activity. On a long-term scale, circadian variability of CV parameters is evident. Circadian variability is the result of the circadian system's activity, which synchronises and organises many activities in the body, such as autonomic and reflex modulation of the CV system and its response to load over the day. In the presented review, we aimed to discuss telemetry devices, their types, implantation, set-up, limitations, short-term and long-term variability of heart rate and blood pressure in CV research. Data collection by telemetry should be, despite some limitations, standard in modern experimental CV research.
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Affiliation(s)
- Lubos Molcan
- Department of Animal Physiology and Ethology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia.
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Dextromethorphan Reduces Oxidative Stress and Inhibits Uremic Artery Calcification. Int J Mol Sci 2021; 22:ijms222212277. [PMID: 34830159 PMCID: PMC8623041 DOI: 10.3390/ijms222212277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 10/30/2021] [Accepted: 11/09/2021] [Indexed: 12/29/2022] Open
Abstract
Medial vascular calcification has emerged as a key factor contributing to cardiovascular mortality in patients with chronic kidney disease (CKD). Vascular smooth muscle cells (VSMCs) with osteogenic transdifferentiation play a role in vascular calcification. Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase inhibitors reduce reactive oxygen species (ROS) production and calcified-medium-induced calcification of VSMCs. This study investigates the effects of dextromethorphan (DXM), an NADPH oxidase inhibitor, on vascular calcification. We used in vitro and in vivo studies to evaluate the effect of DXM on artery changes in the presence of hyperphosphatemia. The anti-vascular calcification effect of DXM was tested in adenine-fed Wistar rats. High-phosphate medium induced ROS production and calcification of VSMCs. DXM significantly attenuated the increase in ROS production, the decrease in ATP, and mitochondria membrane potential during the calcified-medium-induced VSMC calcification process (p < 0.05). The protective effect of DXM in calcified-medium-induced VSMC calcification was not further increased by NADPH oxidase inhibitors, indicating that NADPH oxidase mediates the effect of DXM. Furthermore, DXM decreased aortic calcification in Wistar rats with CKD. Our results suggest that treatment with DXM can attenuate vascular oxidative stress and ameliorate vascular calcification.
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Singh AP, Chandrasekharan P, Gugino S, Berkelhamer S, Wang H, Nielsen L, Kumar VHS. Effects of Neonatal Caffeine Administration on Vessel Reactivity in Adult Mice. Am J Perinatol 2021; 38:1320-1329. [PMID: 32485758 DOI: 10.1055/s-0040-1712953] [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] [Indexed: 10/24/2022]
Abstract
OBJECTIVE The effects of neonatal caffeine therapy in adults born preterm are uncertain. We studied the impact of neonatal caffeine on systemic blood pressure, vessel reactivity, and response to stress in adult mice. STUDY DESIGN Mice pups were randomized to caffeine (20 mg/kg/d) or saline by intraperitoneal injection for 10 days after birth. We performed tail-cuff BP (8/12 weeks), urinary 8-hydroxydeoxyguanosine and fecal corticosterone (14 weeks), and vessel reactivity in aortic rings (16 weeks) in adult mice. RESULTS No differences were noted in systolic, diastolic, and mean blood pressures between the two groups at 8 and 12 weeks of age. However, norepinephrine-induced vasoconstriction was substantially higher in aortic rings in CAF-treated male mice. More significant vasodilator responses to nitric oxide donors in aortic rings in female mice may suggest gender-specific effects of caffeine. Female mice exposed to caffeine had significantly lower body weight over-time. Caffeine-treated male mice had substantially higher fecal corticosterone and urinary 8-hydroxydeoxyguanosine at 14 weeks, suggestive of chronic stress. CONCLUSION We conclude sex-specific vulnerability to the heightened vascular tone of the aorta in male mice following neonatal caffeine therapy. Altered vessel reactivity and chronic stress in the presence of other risk factors may predispose to the development of systemic hypertension in adults born preterm.
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Affiliation(s)
- Ajay Pratap Singh
- Department of Pediatrics, Texas Tech University Health Sciences Center, El Paso, Texas
| | | | - Sylvia Gugino
- Department of Pediatrics, University at Buffalo, Buffalo, New York
| | - Sara Berkelhamer
- Department of Pediatrics, University at Buffalo, Buffalo, New York
| | - Huamei Wang
- Department of Pediatrics, University at Buffalo, Buffalo, New York
| | - Lori Nielsen
- Department of Pediatrics, University at Buffalo, Buffalo, New York
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33
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Parikh M, Kura B, Garg B, Austria JA, Yu L, Maddaford TG, Proctor SD, Netticadan T, Pierce GN. Dietary flaxseed reduces Myocardial Ischemic Lesions, improves cardiac function and lowers cholesterol levels despite the presence of severe obesity in JCR:LA-cp Rats. J Nutr Biochem 2021; 98:108829. [PMID: 34358644 DOI: 10.1016/j.jnutbio.2021.108829] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 02/09/2021] [Accepted: 07/05/2021] [Indexed: 11/28/2022]
Abstract
Previous work has shown that dietary flaxseed can significantly reduce cardiac damage from a coronary artery ligation-induced myocardial infarction. However, this model uses healthy animals and the ligation creates the infarct in an artificial manner. The purpose of this study was to determine if dietary flaxseed can protect the hearts of JCR:LA-cp rats, a model of genetic obesity and metabolic syndrome, from naturally occurring myocardial ischemic lesions. Male and female obese rats were randomized into four groups (n = 8 each) to receive, for 12 weeks, either a) control diet (Con), b) control diet supplemented with 10% ground flaxseed (CFlax), c) a high-fat, high sucrose (HFHS) diet, or d) HFHS supplemented with 10% ground flaxseed (HFlax). Male and female JCR:LA-cp lean rats served as genetic controls and received similar dietary interventions. In male obese rats, serum total cholesterol and LDL-C were significantly lower in CFlax compared to Con. Obese rats on HFHS exhibited increased myocardial ischemic lesions and diastolic dysfunction regardless of sex. HFlax significantly lowered the frequency of cardiac lesions and improved diastolic function in male and female obese rats compared to HFHS. Blood pressures were similar in obese and lean rats. No aortic atherosclerotic lesions were detectable in any group. Collectively, this study shows that a HFHS diet increased myocardial ischemic lesion frequency and abolished the protective effect of female sex on cardiac function. More importantly, the data demonstrates dietary flaxseed protected against the development of small spontaneous cardiac infarcts despite the ingestion of a HFHS diet and the presence of morbid obesity.
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Affiliation(s)
- Mihir Parikh
- Department of Physiology and Pathophysiology, Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba's, Canada; Canadian Centre for Agri-food Research in Health and Medicine (CCARM), 351 Taché Avenue, Winnipeg, Manitoba's, Canada; The Institute of Cardiovascular Sciences, 351 Taché Avenue, Winnipeg, Manitoba's, Canada
| | - Branislav Kura
- Institute for Heart Research, Centre of Experimental Medicine, Slovak Academy of Sciences, Bratislava, Slovak Republic
| | - Bhavana Garg
- Canadian Centre for Agri-food Research in Health and Medicine (CCARM), 351 Taché Avenue, Winnipeg, Manitoba's, Canada; The Institute of Cardiovascular Sciences, 351 Taché Avenue, Winnipeg, Manitoba's, Canada
| | - J Alejandro Austria
- Department of Physiology and Pathophysiology, Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba's, Canada; Canadian Centre for Agri-food Research in Health and Medicine (CCARM), 351 Taché Avenue, Winnipeg, Manitoba's, Canada; The Institute of Cardiovascular Sciences, 351 Taché Avenue, Winnipeg, Manitoba's, Canada
| | - Liping Yu
- Canadian Centre for Agri-food Research in Health and Medicine (CCARM), 351 Taché Avenue, Winnipeg, Manitoba's, Canada
| | - Thane G Maddaford
- Department of Physiology and Pathophysiology, Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba's, Canada; Canadian Centre for Agri-food Research in Health and Medicine (CCARM), 351 Taché Avenue, Winnipeg, Manitoba's, Canada; The Institute of Cardiovascular Sciences, 351 Taché Avenue, Winnipeg, Manitoba's, Canada
| | - Spencer D Proctor
- Metabolic and Cardiovascular Diseases Laboratory, Division of Human Nutrition, University of Alberta, Edmonton, Alberta, Canada
| | - Thomas Netticadan
- Department of Physiology and Pathophysiology, Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba's, Canada; Canadian Centre for Agri-food Research in Health and Medicine (CCARM), 351 Taché Avenue, Winnipeg, Manitoba's, Canada; Agriculture and Agri-Food Canada, St. Boniface Hospital Albrechtsen Research Centre, 351 Taché Avenue, Winnipeg, Manitoba's, Canada
| | - Grant N Pierce
- Department of Physiology and Pathophysiology, Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba's, Canada; Canadian Centre for Agri-food Research in Health and Medicine (CCARM), 351 Taché Avenue, Winnipeg, Manitoba's, Canada; The Institute of Cardiovascular Sciences, 351 Taché Avenue, Winnipeg, Manitoba's, Canada.
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Liu C, Li X, Fu J, Chen K, Liao Q, Wang J, Chen C, Luo H, Jose PA, Yang Y, Yang J, Zeng C. Increased AT 1 receptor expression mediates vasoconstriction leading to hypertension in Snx1 -/- mice. Hypertens Res 2021; 44:906-917. [PMID: 33972750 PMCID: PMC8590203 DOI: 10.1038/s41440-021-00661-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 02/18/2021] [Accepted: 03/17/2021] [Indexed: 02/03/2023]
Abstract
Angiotensin II type 1 receptor (AT1R) is a vital therapeutic target for hypertension. Sorting nexin 1 (SNX1) participates in the sorting and trafficking of the renal dopamine D5 receptor, while angiotensin and dopamine are counterregulatory factors in the regulation of blood pressure. The effect of SNX1 on AT1R is not known. We hypothesized that SNX1, through arterial AT1R sorting and trafficking, is involved in blood pressure regulation. CRISPR/Cas9 system-generated SNX1-/- mice showed dramatic elevations in blood pressure compared to their wild-type littermates. The angiotensin II-mediated contractile reactivity of the mesenteric arteries and AT1R expression in the aortas were also increased. Moreover, immunofluorescence and immunoprecipitation analyses revealed that SNX1 and AT1R were colocalized and interacted in the aortas of wild-type mice. In vitro studies revealed that AT1R protein levels and downstream calcium signaling were upregulated in A10 cells treated with SNX1 siRNA. This may have resulted from decreased AT1R protein degradation since the AT1R mRNA levels showed no changes. AT1R protein was less degraded when SNX1 was downregulated, as reflected by a cycloheximide chase assay. Furthermore, proteasomal rather than lysosomal inhibition increased AT1R protein content, and this effect was accompanied by decayed binding of ubiquitin and AT1R after SNX1 knockdown. Confocal microscopy revealed that AT1R colocalized with PSMD6, a proteasomal marker, and the colocalization was reduced after SNX1 knockdown. These findings suggest that SNX1 sorts AT1R for proteasomal degradation and that SNX1 impairment increases arterial AT1R expression, leading to increased vasoconstriction and blood pressure.
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Affiliation(s)
- Chao Liu
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology & Chongqing Key Laboratory of Hypertension Research, Chongqing, China
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Xingyue Li
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, China
- Department of Cardiovascular Medicine, The General Hospital of Western Theater Command PLA, Chengdu, Sichuan, China
| | - Jinjuan Fu
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology & Chongqing Key Laboratory of Hypertension Research, Chongqing, China
| | - Ken Chen
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology & Chongqing Key Laboratory of Hypertension Research, Chongqing, China
| | - Qiao Liao
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology & Chongqing Key Laboratory of Hypertension Research, Chongqing, China
| | - Jialiang Wang
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology & Chongqing Key Laboratory of Hypertension Research, Chongqing, China
| | - Caiyu Chen
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology & Chongqing Key Laboratory of Hypertension Research, Chongqing, China
| | - Hao Luo
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China
- Chongqing Institute of Cardiology & Chongqing Key Laboratory of Hypertension Research, Chongqing, China
| | - Pedro A Jose
- Division of Renal Disease & Hypertension, The George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | - Yongjian Yang
- College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, China.
- Department of Cardiovascular Medicine, The General Hospital of Western Theater Command PLA, Chengdu, Sichuan, China.
| | - Jian Yang
- Department of Clinical Nutrition, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, China.
| | - Chunyu Zeng
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing, China.
- Chongqing Institute of Cardiology & Chongqing Key Laboratory of Hypertension Research, Chongqing, China.
- State Key Laboratory of Trauma, Burns and Combined Injury, Daping Hospital, The Third Military Medical University, Chongqing, China.
- Cardiovascular Research Center of Chongqing College, Department of Cardiology of Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, China.
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Robert P, Nguyen PMC, Richard A, Grenier C, Chevrollier A, Munier M, Grimaud L, Proux C, Champin T, Lelièvre E, Sarzi E, Vessières E, Henni S, Prunier D, Reynier P, Lenaers G, Fassot C, Henrion D, Loufrani L. Protective role of the mitochondrial fusion protein OPA1 in hypertension. FASEB J 2021; 35:e21678. [PMID: 34133045 DOI: 10.1096/fj.202000238rrr] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 05/04/2021] [Accepted: 05/04/2021] [Indexed: 11/11/2022]
Abstract
Hypertension is associated with excessive reactive oxygen species (ROS) production in vascular cells. Mitochondria undergo fusion and fission, a process playing a role in mitochondrial function. OPA1 is essential for mitochondrial fusion. Loss of OPA1 is associated with ROS production and cell dysfunction. We hypothesized that mitochondria fusion could reduce oxidative stress that defect in fusion would exacerbate hypertension. Using (a) Opa1 haploinsufficiency in isolated resistance arteries from Opa1+/- mice, (b) primary vascular cells from Opa1+/- mice, and (c) RNA interference experiments with siRNA against Opa1 in vascular cells, we investigated the role of mitochondria fusion in hypertension. In hypertension, Opa1 haploinsufficiency induced altered mitochondrial cristae structure both in vascular smooth muscle and endothelial cells but did not modify protein level of long and short forms of OPA1. In addition, we demonstrated an increase of mitochondrial ROS production, associated with a decrease of superoxide dismutase 1 protein expression. We also observed an increase of apoptosis in vascular cells and a decreased VSMCs proliferation. Blood pressure, vascular contractility, as well as endothelium-dependent and -independent relaxation were similar in Opa1+/- , WT, L-NAME-treated Opa1+/- and WT mice. Nevertheless, chronic NO-synthase inhibition with L-NAME induced a greater hypertension in Opa1+/- than in WT mice without compensatory arterial wall hypertrophy. This was associated with a stronger reduction in endothelium-dependent relaxation due to excessive ROS production. Our results highlight the protective role of mitochondria fusion in the vasculature during hypertension by limiting mitochondria ROS production.
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Affiliation(s)
- Pauline Robert
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
| | - Phuc Minh Chau Nguyen
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
| | - Alexis Richard
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
| | - Céline Grenier
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
| | - Arnaud Chevrollier
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
| | - Mathilde Munier
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
| | - Linda Grimaud
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
| | - Coralyne Proux
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
| | - Tristan Champin
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
| | - Eric Lelièvre
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
| | - Emmanuelle Sarzi
- Institute for Neurosciences of Montpellier-INSERM U1051, Montpellier, France
| | - Emilie Vessières
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
| | - Samir Henni
- University Hospital (CHU) of Angers, Angers, France
| | - Delphine Prunier
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
- University Hospital (CHU) of Angers, Angers, France
| | - Pascal Reynier
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
- University Hospital (CHU) of Angers, Angers, France
| | - Guys Lenaers
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
- University Hospital (CHU) of Angers, Angers, France
| | - Céline Fassot
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
| | - Daniel Henrion
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
- University Hospital (CHU) of Angers, Angers, France
| | - Laurent Loufrani
- MITOVASC Institute and CARFI Facility, University of Angers, Angers, France
- UMR CNRS 6015, Angers, France
- INSERM U1083, Angers, France
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Baranowska I, Gawrys O, Roszkowska-Chojecka MM, Badzynska B, Tymecka D, Olszynski KH, Kompanowska-Jezierska E. Chymase Dependent Pathway of Angiotensin II Generation and Rapeseed Derived Peptides for Antihypertensive Treatment of Spontaneously Hypertensive Rats. Front Pharmacol 2021; 12:658805. [PMID: 34079459 PMCID: PMC8165439 DOI: 10.3389/fphar.2021.658805] [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: 01/26/2021] [Accepted: 04/28/2021] [Indexed: 12/12/2022] Open
Abstract
The contribution of chymase, one of the enzymes responsible for angiotensin II generation in non-ACE pathway, remains unclear in the development of hypertension. The aim of the study was to investigate chymase inhibition as potential antihypertensive therapy in spontaneously hypertensive rats (SHR). To block chymase we employed chymostatin, a commercial inhibitor, and new analogues of rapeseed-derived peptides, VWIS and RIY. These simple and easy to obtain peptides not only block chymase, but also possess weak activity to inhibit ACE. This is a first attempt to evaluate the impact of chronic administration of selected inhibitors on blood pressure of SHR in two phases of hypertension. Male SHR (6 or 16 weeks old) were treated daily for two weeks with chymostatin (CH; 2 mg/kg/day), the peptides VWIS (12.5 mg/kg/day) or RIY (7.5 mg/kg/day); control groups received chymostatin solvent (0.15% DMSO in saline) or peptide solvent (saline). The substances were administered intravenously to conscious animals via a chronically cannulated femoral vein. Systolic blood pressure (SBP) was measured by telemetry. Metabolic parameters were measured weekly, and tissue samples were harvested after two weeks of treatment. None of the administered chymase inhibitors affected the development of hypertension in young rats. Only RIY exhibited beneficial properties when administered in the established phase of hypertension: SBP decreased from 165 ± 10 to 157 ± 7 mmHg while the excretion of nitric oxide metabolites increased significantly. The glomerulosclerosis index was lower after RIY treatment in both age groups (significant only in young rats 0.29 ± 0.05 vs 0.48 ± 0.04 in the control group; p < 0.05). Hence, it seems that peptide RIY exhibits some positive effect on renal morphology. The results obtained suggest that the peptide RIY may be a useful tool in the treatment of hypertension, especially in cases when ACE inhibitors are not effective.
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Affiliation(s)
- Iwona Baranowska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Olga Gawrys
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Malwina M Roszkowska-Chojecka
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Bozena Badzynska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | | | - Krzysztof H Olszynski
- Behaviour and Metabolism Research Laboratory, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Elzbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
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Association of central arterial stiffness with hippocampal blood flow and N-acetyl aspartate concentration in hypertensive adult Dahl salt sensitive rats. J Hypertens 2021; 39:2113-2121. [PMID: 34001812 PMCID: PMC8452328 DOI: 10.1097/hjh.0000000000002899] [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] [Indexed: 11/26/2022]
Abstract
BACKGROUND Central arterial stiffness (CAS) is associated with elevated arterial blood pressure (BP) and is likely associated with stiffening of cerebral artery walls, with attendant cerebral hypoperfusion, neuronal density loss and cognitive decline. Dahl salt-sensitive (Dahl-S) rats exhibit age-associated hypertension and memory loss, even on a normal salt intake. METHOD We sought to explore whether central arterial pulse wave velocity (PWV), a marker of CAS, is associated with hippocampal cerebral blood flow (CBF) and neuronal density in hypertensive Dahl-S rats. We measured systolic BP (by tail-cuff plethysmography), aortic PWV (by echocardiography) and CBF and N-acetyl aspartate (NAA) (by magnetic resonance imaging) in 6 month-old male Dahl-S rats (n = 12). RESULTS Greater PWV was significantly associated with lower CBF and lower NAA concentration in the hippocampus, supporting a role of CAS in cerebrovascular dysfunction and decline in cognitive performance with aging. CONCLUSION These findings implicate increased CAS in cerebral hypoperfusion and loss of neuronal density and function in the Dahl-S model of age-associated cardiovascular dysfunction.
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Zhang JQJ, Saravanabavan S, Cheng KM, Raghubanshi A, Chandra AN, Munt A, Rayner B, Zhang Y, Chau K, Wong ATY, Rangan GK. Long-term dietary nitrate supplementation does not reduce renal cyst growth in experimental autosomal dominant polycystic kidney disease. PLoS One 2021; 16:e0248400. [PMID: 33886581 PMCID: PMC8061912 DOI: 10.1371/journal.pone.0248400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 02/26/2021] [Indexed: 11/18/2022] Open
Abstract
Augmentation of endogenous nitric oxide (NO) synthesis, either by the classical L-arginine-NO synthase pathway, or the recently discovered entero-salivary nitrate-nitrite-NO system, may slow the progression of autosomal dominant polycystic kidney disease (ADPKD). To test this hypothesis, the expression of NO in human ADPKD cell lines (WT 9–7, WT 9–12), and the effect of L-arginine on an in vitro model of three-dimensional cyst growth using MDCK cells, was examined. In addition, groups of homozygous Pkd1RC/RC mice (a hypomorphic genetic ortholog of ADPKD) received either low, moderate or high dose sodium nitrate (0.1, 1 or 10 mmol/kg/day), or sodium chloride (vehicle; 10 mmol/kg/day), supplemented drinking water from postnatal month 1 to 9 (n = 12 per group). In vitro, intracellular NO, as assessed by DAF-2/DA fluorescence, was reduced by >70% in human ADPKD cell lines, and L-arginine and the NO donor, sodium nitroprusside, both attenuated in vitro cyst growth by up to 18%. In contrast, in Pkd1RC/RC mice, sodium nitrate supplementation increased serum nitrate/nitrite levels by ~25-fold in the high dose group (P<0.001), but kidney enlargement and percentage cyst area was not altered, regardless of dose. In conclusion, L-arginine has mild direct efficacy on reducing renal cyst growth in vitro, whereas long-term sodium nitrate supplementation was ineffective in vivo. These data suggest that the bioconversion of dietary nitrate to NO by the entero-salivary pathway may not be sufficient to influence the progression of renal cyst growth in ADPKD.
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Affiliation(s)
- Jennifer Q. J. Zhang
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
- Department of Renal Medicine, Westmead Hospital, Western Sydney Local Health District, Sydney, New South Wales, Australia
| | - Sayanthooran Saravanabavan
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
- Department of Renal Medicine, Westmead Hospital, Western Sydney Local Health District, Sydney, New South Wales, Australia
| | - Kai Man Cheng
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
- Department of Renal Medicine, Westmead Hospital, Western Sydney Local Health District, Sydney, New South Wales, Australia
| | - Aarya Raghubanshi
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
- Department of Renal Medicine, Westmead Hospital, Western Sydney Local Health District, Sydney, New South Wales, Australia
| | - Ashley N. Chandra
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
- Department of Renal Medicine, Westmead Hospital, Western Sydney Local Health District, Sydney, New South Wales, Australia
| | - Alexandra Munt
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
- Department of Renal Medicine, Westmead Hospital, Western Sydney Local Health District, Sydney, New South Wales, Australia
| | - Benjamin Rayner
- Heart Research Institute, Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Yunjia Zhang
- Heart Research Institute, Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Katrina Chau
- Department of Renal Medicine and School of Medicine, Western Sydney University at Blacktown Hospital, Sydney, New South Wales, Australia
| | - Annette T. Y. Wong
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
- Department of Renal Medicine, Westmead Hospital, Western Sydney Local Health District, Sydney, New South Wales, Australia
| | - Gopala K. Rangan
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
- Department of Renal Medicine, Westmead Hospital, Western Sydney Local Health District, Sydney, New South Wales, Australia
- * E-mail:
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Wang T, Gao L, Yang Z, Wang F, Guo Y, Wang B, Hua R, Shang H, Xu J. Restraint Stress in Hypertensive Rats Activates the Intestinal Macrophages and Reduces Intestinal Barrier Accompanied by Intestinal Flora Dysbiosis. J Inflamm Res 2021; 14:1085-1110. [PMID: 33790622 PMCID: PMC8007621 DOI: 10.2147/jir.s294630] [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: 12/22/2020] [Accepted: 02/22/2021] [Indexed: 12/14/2022] Open
Abstract
Purpose Hypertension (HTN) is a major risk factor for cardiovascular disease. In recent years, there were numerous studies on the function of stress in HTN. However, the gut dysbiosis linked to hypertension in animal models under stress is still incompletely understood. Purpose of this study is to use multiple determination method to determine the juvenile stage intestinal bacteria, cytokines and changes in hormone levels. Methods Four groups of juvenile male spontaneously hypertensive rats (SHRs) and age-matched male Wistar-Kyoto (WKY) rats were randomly selected as control and experimental groups. Rats in the two stress groups were exposed to restraint stress for 3 hours per day for 7 consecutive days. In one day three times in the method of non-invasive type tail-cuff monitoring blood pressure. The detailed mechanism was illuminated based on the intestinal change using immunohistochemical and immunofluorescence staining and the stress-related hormone and inflammation factors were analyzed via ELISA method. The integrity of the epithelial barrier was assessed using FITC/HRP and the expression levels of proteins associated with the tight junction was detected by Western blot. The alteration of stress-related intestinal flora from ileocecal junction and distal colon were also analyzed using its 16S rDNA sequencing. Results The results indicate that acute stress rapidly increases mean arterial pressure which is positive correlation to hormone concentration, especially in SHR-stress group. Meanwhile, stress promoted the enhancement of epithelial permeability accompanied with a reduced expression of the tight junction-related protein and the macrophages (Mφ) aggregation to the lamina propria. There were remarkable significant increase of stress-related hormones and pro-inflammatory factor interleukin (IL)-6 along with a decrease in the diversity of intestinal flora and an imbalance in the F/B ratio. Conclusion Our results reveal that stress accompanied with HTN could significantly disrupt the domino effect between intestinal flora and homeostasis.
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Affiliation(s)
- Tiantian Wang
- Department of Physiology and Pathophysiology, Basic Medical College, Capital Medical University, Beijing, 100069, People's Republic of China
| | - Lei Gao
- Department of Biomedical Informatics, School of Biomedical Engineering, Capital Medical University, Beijing, 100069, People's Republic of China
| | - Zejun Yang
- Department of Clinical Medicine, Basic Medical College, Capital Medical University, Beijing, 100069, People's Republic of China
| | - Feifei Wang
- Department of Clinical Medicine, Basic Medical College, Capital Medical University, Beijing, 100069, People's Republic of China
| | - Yuexin Guo
- Department of Oral Medicine, Basic Medical College, Capital Medical University, Beijing, 100069, People's Republic of China
| | - Boya Wang
- Eight Program of Clinical Medicine, Peking University Health Science Center, Beijing, 100081, People's Republic of China
| | - Rongxuan Hua
- Department of Clinical Medicine, Basic Medical College, Capital Medical University, Beijing, 100069, People's Republic of China
| | - Hongwei Shang
- Experimental Center for Morphological Research Platform, Capital Medical University, Beijing, 100069, People's Republic of China
| | - Jingdong Xu
- Department of Physiology and Pathophysiology, Basic Medical College, Capital Medical University, Beijing, 100069, People's Republic of China
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Yang YY, Yu HH, Jiao XL, Li LY, Du YH, Li J, Lv QW, Zhang HN, Zhang J, Hu CW, Zhang XP, Wei YX, Qin YW. Angiopoietin-like proteins 8 knockout reduces intermittent hypoxia-induced vascular remodeling in a murine model of obstructive sleep apnea. Biochem Pharmacol 2021; 186:114502. [PMID: 33684391 DOI: 10.1016/j.bcp.2021.114502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 02/25/2021] [Accepted: 02/26/2021] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Obstructive sleep apnea (OSA) is a major risk factor for cardiovascular mortality. Apnea-induced chronic intermittent hypoxia (CIH) is a primary pathophysiological manifestation of OSA that promotes various cardiovascular alterations, such as aortic vascular remodeling. In this study, we investigated the association between angiopoietin-like proteins 8 (ANGPTL8) and CIH-induced aortic vascular remodeling in mice. METHODS C57BL/6J male mice were divided into four groups: Normoxia group, ANGPTL8-/- group, CIH group, CIH + ANGPTL8-/- group. Mice in the normoxia group and ANGPTL8-/- group received no treatment, while mice in the CIH and CIH + ANGPTL8-/- group were subjected to CIH (21%-5% O2, 180 s/cycle, 10 h/day) for 6 weeks. At the end of the experiments, intima-media thickness (IMT), elastin disorganization, and aortic wall collagen abundance were assessed in vivo. Immunohistochemistry and Western-blot were used to detect endoplasmic reticulum stress (ERS) and aortic vascular smooth muscle cell proliferation. ANGPTL8 shRNA and ANGPL8 overexpression were used in aortic vascular smooth muscle cells to investigate the mechanism of ANGPTL8 in CIH. RESULTS Compared to the control group, CIH exposure significantly increased intima-media thickness (IMT), elastic fibers disorganization, and aortic wall collagen abundance. CIH also significantly increased blood pressure, induced hyperlipidemia, as well as the expression of ERS protein activating transcription factor-6 (ATF6) and aortic vascular smooth muscle cell proliferation. Contrary, ANGPTL8-/- significantly mitigated the CIH-induced vascular remodeling; ANGPTL8-/- decreased CIH-induced hypertension and hyperlipidemia, inhibited the protein expression of ATF6, and aortic vascular smooth muscle cell proliferation. Moreover, our in vitro study suggested that CIH could induce ANGPTL8 expression via hypoxia-inducible factor (HIF-1α); ANGPTL8 induced proliferation of aortic vascular smooth muscle cells via the ERS pathway. CONCLUSION ANGPTL8-/- can prevent CIH-induced aortic vascular remodeling, probably through the inhibition of the ERS pathway. Therefore, ANGPTL8 might be a potential target in CIH-induced aortic vascular remodeling.
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Affiliation(s)
- Yun-Yun Yang
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China; Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Hua-Hui Yu
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China; Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Xiao-Lu Jiao
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China; Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Lin-Yi Li
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China; Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Yun-Hui Du
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China; Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Juan Li
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China; Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Qian-Wen Lv
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China; Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Hui-Na Zhang
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China; Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Jing Zhang
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China; Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Chao-Wei Hu
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China; Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Xiao-Ping Zhang
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China; Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Yong-Xiang Wei
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China; Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China
| | - Yan-Wen Qin
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China; Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China.
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Yu XJ, Xin GR, Liu KL, Liu XJ, Fu LY, Qi J, Kang KB, Meng TT, Yi QY, Li Y, Sun YJ, Kang YM. Paraventricular Nucleus Infusion of Oligomeric Proantho Cyanidins Improves Renovascular Hypertension. Front Neurosci 2021; 15:642015. [PMID: 33746706 PMCID: PMC7969814 DOI: 10.3389/fnins.2021.642015] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 02/10/2021] [Indexed: 12/14/2022] Open
Abstract
Oxidative stress plays an important role in the pathogenesis of hypertension. Oligomeric proantho cyanidins (OPC) is the main polyphenol presents in grape seed and is known for its potent antioxidant and anti-inflammatory properties. In the present study, we hypothesize that OPC can attenuate oxidative stress in the paraventricular nucleus of hypothalamus (PVN), ameliorate neurotransmitter imbalance, decrease the blood pressure and sympathetic activity in renovascular hypertensive rats. After induction of renovascular hypertension by the two-kidney one-clip (2K-1C) method, male Sprague-Dawley rats received chronic bilateral PVN infusion of OPC (20 μg/h) or vehicle via osmotic minipump for 4 weeks. We found that hypertension induced by 2K-1C was associated with the production of reactive oxygen species (ROS) in the PVN. Infusion of OPC in the PVN significantly reduced the systolic blood pressure and norepinephrine in plasma of 2K-1C rats. In addition, PVN infusion of OPC decreased the level of ROS and the expression of stress-related nicotinamide adenine dinucleotide phosphate (NADPH) oxidases subunit NOX4, increased the levels of nuclear factor E2-related factor 2 (Nrf2) and antioxidant enzyme, balanced the content of cytokines, increased expression of glutamic acid decarboxylase and decreased the expression of tyrosine hydroxylase in the PVN of 2K-1C rats. Our findings provided strong evidence that PVN infusion of OPC inhibited the progression of renovascular hypertension through its potent anti-oxidative and anti-inflammatory function in the PVN.
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Affiliation(s)
- Xiao-Jing Yu
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Shaanxi Engineering and Research Center of Vaccine, Key Laboratory of Environment and Genes Related to Diseases of Education Ministry of China, Xi'an, China
| | - Guo-Rui Xin
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Shaanxi Engineering and Research Center of Vaccine, Key Laboratory of Environment and Genes Related to Diseases of Education Ministry of China, Xi'an, China
| | - Kai-Li Liu
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Shaanxi Engineering and Research Center of Vaccine, Key Laboratory of Environment and Genes Related to Diseases of Education Ministry of China, Xi'an, China
| | - Xiao-Jing Liu
- Department of Cardiology, The Second Clinical Medical College, Shanxi Medical University, Taiyuan, China
| | - Li-Yan Fu
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Shaanxi Engineering and Research Center of Vaccine, Key Laboratory of Environment and Genes Related to Diseases of Education Ministry of China, Xi'an, China
| | - Jie Qi
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Shaanxi Engineering and Research Center of Vaccine, Key Laboratory of Environment and Genes Related to Diseases of Education Ministry of China, Xi'an, China
| | - Kai B Kang
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, IL, United States
| | - Ting-Ting Meng
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Shaanxi Engineering and Research Center of Vaccine, Key Laboratory of Environment and Genes Related to Diseases of Education Ministry of China, Xi'an, China
| | - Qiu-Yue Yi
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University, Xi'an, China
| | - Ying Li
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Shaanxi Engineering and Research Center of Vaccine, Key Laboratory of Environment and Genes Related to Diseases of Education Ministry of China, Xi'an, China
| | - Yao-Jun Sun
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Yu-Ming Kang
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Shaanxi Engineering and Research Center of Vaccine, Key Laboratory of Environment and Genes Related to Diseases of Education Ministry of China, Xi'an, China
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Argunhan F, Thapa D, Aubdool AA, Carlini E, Arkless K, Hendrikse ER, de Sousa Valente J, Kodji X, Barrett B, Ricciardi CA, Gnudi L, Hay DL, Brain SD. Calcitonin Gene-Related Peptide Protects Against Cardiovascular Dysfunction Independently of Nitric Oxide In Vivo. Hypertension 2021; 77:1178-1190. [PMID: 33641368 DOI: 10.1161/hypertensionaha.120.14851] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
[Figure: see text].
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Affiliation(s)
- Fulye Argunhan
- From the Section of Vascular Biology and Inflammation, School of Cardiovascular Medicine and Sciences, BHF Cardiovascular Centre of Excellence, King's College London, Franklin-Wilkins Building, Waterloo Campus, United Kingdom (F.A., D.T., E.C., K.A., J.d.S.V., X.K., B.B., C.A.R., L.G., S.D.B.)
| | - Dibesh Thapa
- From the Section of Vascular Biology and Inflammation, School of Cardiovascular Medicine and Sciences, BHF Cardiovascular Centre of Excellence, King's College London, Franklin-Wilkins Building, Waterloo Campus, United Kingdom (F.A., D.T., E.C., K.A., J.d.S.V., X.K., B.B., C.A.R., L.G., S.D.B.)
| | - Aisah Aniisah Aubdool
- William Harvey Research Institute, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, United Kingdom (A.A.A.)
| | - Emanuele Carlini
- From the Section of Vascular Biology and Inflammation, School of Cardiovascular Medicine and Sciences, BHF Cardiovascular Centre of Excellence, King's College London, Franklin-Wilkins Building, Waterloo Campus, United Kingdom (F.A., D.T., E.C., K.A., J.d.S.V., X.K., B.B., C.A.R., L.G., S.D.B.)
| | - Kate Arkless
- From the Section of Vascular Biology and Inflammation, School of Cardiovascular Medicine and Sciences, BHF Cardiovascular Centre of Excellence, King's College London, Franklin-Wilkins Building, Waterloo Campus, United Kingdom (F.A., D.T., E.C., K.A., J.d.S.V., X.K., B.B., C.A.R., L.G., S.D.B.)
| | - Erica Ruth Hendrikse
- From the Section of Vascular Biology and Inflammation, School of Cardiovascular Medicine and Sciences, BHF Cardiovascular Centre of Excellence, King's College London, Franklin-Wilkins Building, Waterloo Campus, United Kingdom (F.A., D.T., E.C., K.A., J.d.S.V., X.K., B.B., C.A.R., L.G., S.D.B.)
| | - Joao de Sousa Valente
- From the Section of Vascular Biology and Inflammation, School of Cardiovascular Medicine and Sciences, BHF Cardiovascular Centre of Excellence, King's College London, Franklin-Wilkins Building, Waterloo Campus, United Kingdom (F.A., D.T., E.C., K.A., J.d.S.V., X.K., B.B., C.A.R., L.G., S.D.B.)
| | - Xenia Kodji
- From the Section of Vascular Biology and Inflammation, School of Cardiovascular Medicine and Sciences, BHF Cardiovascular Centre of Excellence, King's College London, Franklin-Wilkins Building, Waterloo Campus, United Kingdom (F.A., D.T., E.C., K.A., J.d.S.V., X.K., B.B., C.A.R., L.G., S.D.B.)
| | - Brentton Barrett
- From the Section of Vascular Biology and Inflammation, School of Cardiovascular Medicine and Sciences, BHF Cardiovascular Centre of Excellence, King's College London, Franklin-Wilkins Building, Waterloo Campus, United Kingdom (F.A., D.T., E.C., K.A., J.d.S.V., X.K., B.B., C.A.R., L.G., S.D.B.)
| | - Carlo Alberto Ricciardi
- From the Section of Vascular Biology and Inflammation, School of Cardiovascular Medicine and Sciences, BHF Cardiovascular Centre of Excellence, King's College London, Franklin-Wilkins Building, Waterloo Campus, United Kingdom (F.A., D.T., E.C., K.A., J.d.S.V., X.K., B.B., C.A.R., L.G., S.D.B.)
| | - Luigi Gnudi
- From the Section of Vascular Biology and Inflammation, School of Cardiovascular Medicine and Sciences, BHF Cardiovascular Centre of Excellence, King's College London, Franklin-Wilkins Building, Waterloo Campus, United Kingdom (F.A., D.T., E.C., K.A., J.d.S.V., X.K., B.B., C.A.R., L.G., S.D.B.)
| | - Debbie Lucy Hay
- School of Biological Sciences, University of Auckland, New Zealand (D.L.H.)
| | - Susan Diana Brain
- From the Section of Vascular Biology and Inflammation, School of Cardiovascular Medicine and Sciences, BHF Cardiovascular Centre of Excellence, King's College London, Franklin-Wilkins Building, Waterloo Campus, United Kingdom (F.A., D.T., E.C., K.A., J.d.S.V., X.K., B.B., C.A.R., L.G., S.D.B.)
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Asico LD, Rozyyev S, Crusan AM, Jose PA, Villar VAM. Elucidating the Role of Lipid Rafts on G Protein-Coupled Receptor Function in the Mouse Kidney: An In Vivo Approach. Methods Mol Biol 2021; 2187:187-206. [PMID: 32770507 DOI: 10.1007/978-1-0716-0814-2_10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Numerous G protein-coupled receptors (GPCRs) and GPCR-signaling molecules reside in lipid rafts and thus, are inherently regulated in these microdomains. However, the limitations of current methods to investigate lipid raft biology and GPCR activity in situ have hindered the complete understanding of the molecular underpinnings of GPCR trafficking and signaling, especially in the whole organism. This book chapter details an innovative in vivo approach to study the crucial role of lipid rafts on the workings of GPCRs in the mouse kidney. This protocol involves the use of a modified mini osmotic pump to deliver an agent that selectively disrupts the lipid raft in the kidney.
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Affiliation(s)
- Laureano D Asico
- Division of Renal Diseases and Hypertension, School of Medicine and Health Sciences, The George Washington University, Washington, DC, USA.
| | - Selim Rozyyev
- Division of Renal Diseases and Hypertension, School of Medicine and Health Sciences, The George Washington University, Washington, DC, USA.,Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's National Health System, Washington, DC, USA
| | - Annabelle M Crusan
- Research Animal Facility, The Children's Research Institute, Children's National Health System, Washington, DC, USA
| | - Pedro A Jose
- Division of Renal Diseases and Hypertension, School of Medicine and Health Sciences, The George Washington University, Washington, DC, USA
| | - Van Anthony M Villar
- Division of Renal Diseases and Hypertension, School of Medicine and Health Sciences, The George Washington University, Washington, DC, USA.
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Wang Y, Zhang J, Wier WG, Chen L, Blaustein MP. NO-induced vasodilation correlates directly with BP in smooth muscle-Na/Ca exchanger-1-engineered mice: elevated BP does not attenuate endothelial function. Am J Physiol Heart Circ Physiol 2021; 320:H221-H237. [PMID: 33124883 PMCID: PMC7847073 DOI: 10.1152/ajpheart.00487.2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 10/26/2020] [Accepted: 10/26/2020] [Indexed: 12/29/2022]
Abstract
Arterial smooth muscle Na+/Ca2+ exchanger-1 (SM-NCX1) promotes vasoconstriction or vasodilation by mediating, respectively, Ca2+ influx or efflux. In vivo, SM-NCX1 mediates net Ca2+ influx to help maintain myogenic tone (MT) and neuronally activated constriction. SM-NCX1-TG (overexpressing transgenic) mice have increased MT and mean blood pressure (MBP; +13.5 mmHg); SM-NCX1-KO (knockout) mice have reduced MT and MBP (-11.1 mmHg). Endothelium-dependent vasodilation (EDV) is often impaired in hypertension. We tested whether genetically engineered SM-NCX1 expression and consequent BP changes similarly alter EDV. Isolated, pressurized mesenteric resistance arteries with MT from SM-NCX1-TG and conditional SM-NCX1-KO mice, and femoral arteries in vivo from TG mice were studied. Acetylcholine (ACh)-dilated TG arteries with MT slightly more than control or KO arteries, implying that SM-NCX1 overexpression does not impair EDV. In preconstricted KO, but not TG mouse arteries, however, ACh- and bradykinin-triggered vasodilation was markedly attenuated. To circumvent the endothelium, phenylephrine-constricted resistance arteries were tested with Na-nitroprusside [SNP; nitric oxide (NO) donor] and cGMP. This endothelium-independent vasodilation was augmented in TG but attenuated in KO arteries that lack NCX1-mediated Ca2+ clearance. Baseline cytosolic Ca2+ ([Ca2+]cyt) was elevated in TG femoral arteries in vivo, supporting the high BP; furthermore, SNP-triggered [Ca2+]cyt decline and vasodilation were augmented as NO and cGMP promote myocyte polarization thereby enhancing NCX1-mediated Ca2+ efflux. The TG mouse data indicate that BP elevation does not attenuate endothelium-dependent vasodilation. Thus, in essential hypertension and many models the endothelial impairment that supports the hypertension apparently is not triggered by BP elevation but by extravascular mechanisms.NEW & NOTEWORTHY Endothelium-dependent, ACh-induced vasodilation (EDV) is attenuated, and arterial myocyte Na+/Ca2+ exchangers (NCX1) are upregulated in many forms of hypertension. Surprisingly, mildly hypertensive smooth muscle-specific (SM)-NCX1 transgenic mice exhibited modestly enhanced EDV and augmented endothelium-independent vasodilation (EIV). Conversely, mildly hypotensive SM-NCX1-knockout mice had greatly attenuated EIV. These adaptations help compensate for NCX1 expression-induced alterations in cytosolic Ca2+ and blood pressure (BP) and belie the view that elevated BP, itself, causes the endothelial dysregulation in hypertension.
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Affiliation(s)
- Youhua Wang
- Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
- Department of Physical Education, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - Jin Zhang
- Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
| | - W Gil Wier
- Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Ling Chen
- Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
- Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland
| | - Mordecai P Blaustein
- Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
- Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland
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Zhao H, Yang H, Geng C, Chen Y, Pang J, Shu T, Zhao M, Tang Y, Li Z, Li B, Hou C, Song X, Wu A, Guo X, Chen S, Liu B, Yan C, Wang J. Role of IgE-FcεR1 in Pathological Cardiac Remodeling and Dysfunction. Circulation 2020; 143:1014-1030. [PMID: 33305586 DOI: 10.1161/circulationaha.120.047852] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Immunoglobulin E (IgE) belongs to a class of immunoglobulins involved in immune response to specific allergens. However, the roles of IgE and IgE receptor (FcεR1) in pathological cardiac remodeling and heart failure are unknown. METHODS Serum IgE levels and cardiac FcεR1 expression were assessed in diseased hearts from human and mouse. The role of FcεR1 signaling in pathological cardiac remodeling was explored in vivo by FcεR1 genetic depletion, anti-IgE antibodies, and bone marrow transplantation. The roles of the IgE-FcεR1 pathway were further evaluated in vitro in primary cultured rat cardiomyocytes and cardiac fibroblasts (CFs). RNA sequencing and bioinformatic analyses were used to identify biochemical changes and signaling pathways that are regulated by IgE/FcεR1. RESULTS Serum IgE levels were significantly elevated in patients with heart failure as well as in 2 mouse cardiac disease models induced by chronic pressure overload via transverse aortic constriction and chronic angiotensin II infusion. Interestingly, FcεR1 expression levels were also significantly upregulated in failing hearts from human and mouse. Blockade of the IgE-FcεR1 pathway by FcεR1 knockout alleviated transverse aortic constriction- or angiotensin II-induced pathological cardiac remodeling or dysfunction. Anti-IgE antibodies (including the clinical drug omalizumab) also significantly alleviated angiotensin II-induced cardiac remodeling. Bone marrow transplantation experiments indicated that IgE-induced cardiac remodeling was mediated through non-bone marrow-derived cells. FcεR1 was found to be expressed in both cardiomyocytes and CFs. In cultured rat cardiomyocytes, IgE-induced cardiomyocyte hypertrophy and hypertrophic marker expression were abolished by depleting FcεR1. In cultured rat CFs, IgE-induced CF activation and matrix protein production were also blocked by FcεR1 deficiency. RNA sequencing and signaling pathway analyses revealed that transforming growth factor-β may be a critical mediator, and blocking transforming growth factor-β indeed alleviated IgE-induced cardiomyocyte hypertrophy and cardiac fibroblast activation in vitro. CONCLUSIONS Our findings suggest that IgE induction plays a causative role in pathological cardiac remodeling, at least partially via the activation of IgE-FcεR1 signaling in cardiomyocytes and CFs. Therapeutic strategies targeting the IgE-FcεR1 axis may be effective for managing IgE-mediated cardiac remodeling.
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Affiliation(s)
- Hongmei Zhao
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing (H.Z., H.Y., C.G., J.P., T.S., M.Z., Y.T., Z.L., B.L., C.H., X.S., J.W.)
| | - Hongqin Yang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing (H.Z., H.Y., C.G., J.P., T.S., M.Z., Y.T., Z.L., B.L., C.H., X.S., J.W.)
| | - Chi Geng
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing (H.Z., H.Y., C.G., J.P., T.S., M.Z., Y.T., Z.L., B.L., C.H., X.S., J.W.)
| | - Yang Chen
- Department of Pharmacology, School of Basic Medical Sciences, Inner Mongolia Medical University, Huhhot, China (Y.C.)
| | - Junling Pang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing (H.Z., H.Y., C.G., J.P., T.S., M.Z., Y.T., Z.L., B.L., C.H., X.S., J.W.)
| | - Ting Shu
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing (H.Z., H.Y., C.G., J.P., T.S., M.Z., Y.T., Z.L., B.L., C.H., X.S., J.W.)
| | - Meijun Zhao
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing (H.Z., H.Y., C.G., J.P., T.S., M.Z., Y.T., Z.L., B.L., C.H., X.S., J.W.)
| | - Yaqin Tang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing (H.Z., H.Y., C.G., J.P., T.S., M.Z., Y.T., Z.L., B.L., C.H., X.S., J.W.)
| | - Zhiwei Li
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing (H.Z., H.Y., C.G., J.P., T.S., M.Z., Y.T., Z.L., B.L., C.H., X.S., J.W.)
| | - Baicun Li
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing (H.Z., H.Y., C.G., J.P., T.S., M.Z., Y.T., Z.L., B.L., C.H., X.S., J.W.)
| | - Cuiliu Hou
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing (H.Z., H.Y., C.G., J.P., T.S., M.Z., Y.T., Z.L., B.L., C.H., X.S., J.W.)
| | - Xiaomin Song
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing (H.Z., H.Y., C.G., J.P., T.S., M.Z., Y.T., Z.L., B.L., C.H., X.S., J.W.)
| | - Aoxue Wu
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing (A.W., X.G.)
| | - Xiaoxiao Guo
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing (A.W., X.G.)
| | - Si Chen
- Aab Cardiovascular Research Institute, University of Rochester, School of Medicine and Dentistry, NY (S.C., B.L., C.Y.)
| | - Bin Liu
- Aab Cardiovascular Research Institute, University of Rochester, School of Medicine and Dentistry, NY (S.C., B.L., C.Y.)
| | - Chen Yan
- Aab Cardiovascular Research Institute, University of Rochester, School of Medicine and Dentistry, NY (S.C., B.L., C.Y.)
| | - Jing Wang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing (H.Z., H.Y., C.G., J.P., T.S., M.Z., Y.T., Z.L., B.L., C.H., X.S., J.W.)
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Kishi T. Appropriate selection of a mouse strain in accordance with the vascular properties. Hypertens Res 2020; 43:1311-1312. [DOI: 10.1038/s41440-020-0520-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 06/11/2020] [Accepted: 06/11/2020] [Indexed: 11/09/2022]
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La Salvia S, Musante L, Lannigan J, Gigliotti JC, Le TH, Erdbrügger U. T cell-derived extracellular vesicles are elevated in essential HTN. Am J Physiol Renal Physiol 2020; 319:F868-F875. [PMID: 33017187 PMCID: PMC7789979 DOI: 10.1152/ajprenal.00433.2020] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/23/2020] [Accepted: 10/01/2020] [Indexed: 02/06/2023] Open
Abstract
Extracellular vesicles (EVs) are novel mediators of cell-to-cell communication and appear to mediate the pathogenesis of hypertension (HTN). However, the mechanisms underlying the involvement of EVs in HTN remain unclear. The adaptive and innate immune systems play an important role affecting the kidney and vasculature in animal models of HTN. Evolving evidence shows that immune cell-derived EVs can modulate the immune system in a paracrine fashion and therefore may mediate the effects of inflammation in the pathogenesis of HTN. Therefore, we aimed to understand if specific subtypes of leukocyte/immune cell-derived EVs are altered in essential HTN using an in vivo model of angiotensin II (ANG II)-induced HTN. After 4 wk of ANG II treatment, EVs were isolated from the blood and kidney. EV origin and counts were characterized with Imaging Flow Cytometry, antibody panels targeting platelets, endothelial cells, and leukocytes including B and T cells, monocytes, and neutrophils. Leukocyte-derived EVs (CD45+) were elevated in the circulation and kidney tissue in ANG II-induced HTN. Subgroup analysis depicted T cell-derived EVs (CD3+) to be significantly elevated in ANG II-induced HTN (3.50e+5 particles/mL) compared with control groups (9.16e+4 particles/mL, P = 0.0106). T cell-derived EVs also significantly correlated with systolic blood pressure levels (r2 = 0.898, P = 0.0012). In summary, leukocyte-derived EVs, and more specifically T cell-derived EVs (CD3+), are elevated in ANG II-induced HTN in the circulation and kidney tissue and correlate well with blood pressure severity. EVs from the circulation and kidney may be sensitive biomarkers for HTN and end-organ damage and may lead to new mechanistic insights in this silent disease.
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Affiliation(s)
- Sabrina La Salvia
- Division of Nephrology and Center for Immunity, Inflammation, and Regenerative Medicine, Department of Medicine, University of Virginia, Charlottesville, Virginia
| | - Luca Musante
- Division of Nephrology and Center for Immunity, Inflammation, and Regenerative Medicine, Department of Medicine, University of Virginia, Charlottesville, Virginia
| | - Joanne Lannigan
- School of Medicine, Flow Cytometry Core, University of Virginia, Charlottesville, Virginia
| | - Joseph Christopher Gigliotti
- Department of Integrated Physiology and Pharmacology, Liberty University College of Osteopathic Medicine, Lynchburg, Virginia
| | - Thu H Le
- Division of Nephrology, Department of Medicine, University of Rochester Medical Center, Rochester, New York
| | - Uta Erdbrügger
- Division of Nephrology and Center for Immunity, Inflammation, and Regenerative Medicine, Department of Medicine, University of Virginia, Charlottesville, Virginia
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Luther JM, Fogo AB. Under pressure-how to assess blood pressure in rodents: tail-cuff? Kidney Int 2020; 96:34-36. [PMID: 31229047 DOI: 10.1016/j.kint.2018.12.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/19/2018] [Accepted: 12/21/2018] [Indexed: 10/26/2022]
Affiliation(s)
- James Matthew Luther
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Agnes B Fogo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Department of Medicine, Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
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Xie T, Chen C, Peng Z, Brown BC, Reisz JA, Xu P, Zhou Z, Song A, Zhang Y, Bogdanov MV, Kellems RE, D'Alessandro A, Zhang W, Xia Y. Erythrocyte Metabolic Reprogramming by Sphingosine 1-Phosphate in Chronic Kidney Disease and Therapies. Circ Res 2020; 127:360-375. [PMID: 32284030 DOI: 10.1161/circresaha.119.316298] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
RATIONALE Hypoxia promotes renal damage and progression of chronic kidney disease (CKD). The erythrocyte is the only cell type for oxygen (O2) delivery. Sphingosine 1-phosphate (S1P)-a highly enriched biolipid in erythrocytes-is recently reported to be induced under high altitude in normal humans to enhance O2 delivery. However, nothing is known about erythrocyte S1P in CKD. OBJECTIVE To investigate the function and metabolic basis of erythrocyte S1P in CKD with a goal to explore potential therapeutics. METHODS AND RESULTS Using erythrocyte-specific SphK1 (sphingosine kinase 1; the only enzyme to produce S1P in erythrocytes) knockout mice (eSphK1-/-) in an experimental model of hypertensive CKD with Ang II (angiotensin II) infusion, we found severe renal hypoxia, hypertension, proteinuria, and fibrosis in Ang II-infused eSphk1-/- mice compared with controls. Untargeted metabolomics profiling and in vivo U-13C6 isotopically labeled glucose flux analysis revealed that SphK1 is required for channeling glucose metabolism toward glycolysis versus pentose phosphate pathway, resulting in enhanced erythroid-specific Rapoport-Luebering shunt in Ang II-infused mice. Mechanistically, increased erythrocyte S1P functioning intracellularly activates AMPK (AMP-activated protein kinase) 1α and BPGM (bisphosphoglycerate mutase) by reducing ceramide/S1P ratio and inhibiting PP2A (protein phosphatase 2A), leading to increased 2,3-bisphosphoglycerate (an erythrocyte-specific metabolite negatively regulating Hb [hemoglobin]-O2-binding affinity) production and thus more O2 delivery to counteract kidney hypoxia and progression to CKD. Preclinical studies revealed that an AMPK agonist or a PP2A inhibitor rescued the severe CKD phenotype in Ang II-infused eSphK1-/- mice and prevented development of CKD in the control mice by inducing 2,3-bisphosphoglycerate production and thus enhancing renal oxygenation. Translational research validated mouse findings in erythrocytes of hypertensive CKD patients and cultured human erythrocytes. CONCLUSIONS Our study elucidates the beneficial role of eSphk1-S1P in hypertensive CKD by channeling glucose metabolism toward Rapoport-Luebering shunt and inducing 2,3-bisphosphoglycerate production and O2 delivery via a PP2A-AMPK1α signaling pathway. These findings reveal the metabolic and molecular basis of erythrocyte S1P in CKD and new therapeutic avenues.
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Affiliation(s)
- Tingting Xie
- From the Rheumatology and Immunology (T.X.), Xiangya Hospital, Central South University, Changsha, Hunan, China.,Biochemistry and Molecular Biology (T.X., C.C., P.X., A.S., Y.Z., M.V.B., R.E.K., W.Z., Y.X.), University of Texas McGovern Medical School at Houston
| | - Changhan Chen
- Otolaryngology Head and Neck Surgery (C.C.), Xiangya Hospital, Central South University, Changsha, Hunan, China.,Biochemistry and Molecular Biology (T.X., C.C., P.X., A.S., Y.Z., M.V.B., R.E.K., W.Z., Y.X.), University of Texas McGovern Medical School at Houston
| | - Zhangzhe Peng
- Nephrology (Z.P.), Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Benjamin C Brown
- Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Aurora (B.C.B., J.A.R., A.D.)
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Aurora (B.C.B., J.A.R., A.D.)
| | - Ping Xu
- Biochemistry and Molecular Biology (T.X., C.C., P.X., A.S., Y.Z., M.V.B., R.E.K., W.Z., Y.X.), University of Texas McGovern Medical School at Houston
| | - Zhen Zhou
- Division of Medical Genetics, Department of Internal Medicine (Z.Z.), University of Texas McGovern Medical School at Houston
| | - Anren Song
- Biochemistry and Molecular Biology (T.X., C.C., P.X., A.S., Y.Z., M.V.B., R.E.K., W.Z., Y.X.), University of Texas McGovern Medical School at Houston
| | - Yujin Zhang
- Biochemistry and Molecular Biology (T.X., C.C., P.X., A.S., Y.Z., M.V.B., R.E.K., W.Z., Y.X.), University of Texas McGovern Medical School at Houston
| | - Mikhail V Bogdanov
- Biochemistry and Molecular Biology (T.X., C.C., P.X., A.S., Y.Z., M.V.B., R.E.K., W.Z., Y.X.), University of Texas McGovern Medical School at Houston
| | - Rodney E Kellems
- Biochemistry and Molecular Biology (T.X., C.C., P.X., A.S., Y.Z., M.V.B., R.E.K., W.Z., Y.X.), University of Texas McGovern Medical School at Houston.,MDAnderson-UTHealth Graduate School of Biomedical Science, Houston, TX (R.E.K., Y.X.)
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Aurora (B.C.B., J.A.R., A.D.)
| | - Weiru Zhang
- General Medicine (W.Z.), Xiangya Hospital, Central South University, Changsha, Hunan, China.,Biochemistry and Molecular Biology (T.X., C.C., P.X., A.S., Y.Z., M.V.B., R.E.K., W.Z., Y.X.), University of Texas McGovern Medical School at Houston
| | - Yang Xia
- Biochemistry and Molecular Biology (T.X., C.C., P.X., A.S., Y.Z., M.V.B., R.E.K., W.Z., Y.X.), University of Texas McGovern Medical School at Houston.,MDAnderson-UTHealth Graduate School of Biomedical Science, Houston, TX (R.E.K., Y.X.)
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Role of DRAM1 in mitophagy contributes to preeclampsia regulation in mice. Mol Med Rep 2020; 22:1847-1858. [PMID: 32582984 PMCID: PMC7411365 DOI: 10.3892/mmr.2020.11269] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 06/02/2020] [Indexed: 02/06/2023] Open
Abstract
Preeclampsia (PE) is a complication during pregnancy that is diagnosed by a new onset of hypertension and proteinuria. Although the pathogenesis of PE is not fully understood, a growing body of evidence indicates that oxidative stress and mitochondrial dysfunction might contribute to the progression of PE. Therefore, the aim of the present study was to determine the role of mitophagy in mitochondrial dysfunction and oxidative stress in PE, and to evaluate the role of DNA damage‑regulated autophagy modulator 1 (DRAM1) in the development of PE. First, a mouse model of PE induced by hypoxia‑inducible factor 1α was established, and high levels of oxidative stress, apoptosis and mitochondrial dysfunction were found in the placentas of PE mice. Additionally, the placentas of PE mice exhibited decreased mitophagy and significantly decreased DRAM1 expression. To further explore the role of DRAM1 in mitophagy, DRAM1 was overexpressed in the placental tissues of PE mice, and this overexpression effectively improved the symptoms of PE mice and significantly reduced blood lipid and urine protein levels. DRAM1 overexpression also improved mitochondrial function and reduced oxidative stress in the placentas of PE mice. In addition, the overexpression of DRAM1 improved mitochondrial fusion and fission, and enhanced mitophagy. Altogether, these results indicated a key role for DRAM1 in mitophagy that contributed to the regulation of PE. To the best of the authors' knowledge, the present study provided the first evidence of a role for DRAM1 in PE, and offered novel insight into the pathophysiological mechanisms of PE.
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