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Duan X, Du X, Zheng G, Zhou X, Tan N, Li G, Liu B, Zhu M, Ke T, Liao C. Causality between migraine and cardiovascular disease: a bidirectional Mendelian randomization study. J Headache Pain 2024; 25:130. [PMID: 39135164 PMCID: PMC11321219 DOI: 10.1186/s10194-024-01836-w] [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: 06/04/2024] [Accepted: 07/25/2024] [Indexed: 08/15/2024] Open
Abstract
BACKGROUND While growing evidence suggests a relationship between migraine and cardiovascular disease, the genetic evidence for a causal relationship between migraine and cardiovascular disease is still scarce. Investigating the causal association between migraine and cardiovascular disease is vital. METHODS We carried out a bidirectional Mendelian randomization (MR) study including discovery samples and replication samples using publicly available genome-wide association study (GWAS) summary datasets and stringent screening instrumental variables. Four different MR techniques-Inverse variance weighted (IVW), MR ‒Egger, weighted median, and weighted mode-as well as various sensitivity analyses-Cochran's Q, IVW radial, leave-one-out (LOO), and MR-PRESSO-were utilized to investigate the causal relationship between cardiovascular disease and migraine. RESULTS The protective causal effects of genetically predicted migraine on coronary artery disease (OR, 0.881; 95% CI 0.790-0.982; p = 0.023) and ischemic stroke (OR, 0.912; 95% CI 0.854-0.974; p = 0.006) were detected in forward MR analysis but not in any other cardiovascular disease. Consistently, we also discovered protective causal effects of coronary atherosclerosis (OR, 0.865; 95% CI 0.797-0.940; p = 0.001) and myocardial infarction (OR, 0.798; 95% CI 0.668-0.952; p = 0.012) on migraine in reverse MR analysis. CONCLUSION We found a potential protective effect of migraine on coronary artery disease and ischemic stroke and a potential protective effect of coronary atherosclerosis and myocardial infarction on migraine. We emphasised epidemiological and genetic differences and the need for long-term safety monitoring of migraine medications and future research to improve cardiovascular outcomes in migraine patients.
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Affiliation(s)
- Xirui Duan
- Department of Radiology, Yan'an Hospital of Kunming City (Yan'an Hospital, Kunming Medical University, Yunnan Cardiovascular Hospital), Kunming, China
| | - Xiaolan Du
- Department of Radiology, Yan'an Hospital of Kunming City (Yan'an Hospital, Kunming Medical University, Yunnan Cardiovascular Hospital), Kunming, China
| | - Guangrong Zheng
- Department of Radiology, Yan'an Hospital of Kunming City (Yan'an Hospital, Kunming Medical University, Yunnan Cardiovascular Hospital), Kunming, China
| | - Xinyan Zhou
- Department of Radiology, Yan'an Hospital of Kunming City (Yan'an Hospital, Kunming Medical University, Yunnan Cardiovascular Hospital), Kunming, China
| | - Na Tan
- Department of Radiology, Yan'an Hospital of Kunming City (Yan'an Hospital, Kunming Medical University, Yunnan Cardiovascular Hospital), Kunming, China
| | - Guochen Li
- Department of Radiology, Yan'an Hospital of Kunming City (Yan'an Hospital, Kunming Medical University, Yunnan Cardiovascular Hospital), Kunming, China
| | - Bin Liu
- Department of Radiology, Yan'an Hospital of Kunming City (Yan'an Hospital, Kunming Medical University, Yunnan Cardiovascular Hospital), Kunming, China
| | - Mei Zhu
- Department of General Practice, The Third People's Hospital of Yunnan Province, Kunming, China
| | - Tengfei Ke
- Department of Radiology, Yunnan Cancer Hospital/Center, Third Affiliated Hospital of Kunming Medical University, Kunming, China.
| | - Chengde Liao
- Department of Radiology, Yan'an Hospital of Kunming City (Yan'an Hospital, Kunming Medical University, Yunnan Cardiovascular Hospital), Kunming, China.
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Chauhan M, Betancourt A, Balakrishnan M, Mishra A, Espinosa J, Shamshirsaz AA, Fox K, Belfort M, Yallampalli C. Calcitonin Gene Related Peptide, Adrenomedullin, and Adrenomedullin 2 Function in Uterine Artery During Human Pregnancy. Endocrinology 2022; 163:6374898. [PMID: 34558598 PMCID: PMC8574633 DOI: 10.1210/endocr/bqab204] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Indexed: 12/26/2022]
Abstract
RATIONALE Calcitonin gene-related peptide (CGRP) and its family members adrenomedullin (ADM) and adrenomedullin 2 (ADM2; also known as intermedin) support vascular adaptions in rat pregnancy. OBJECTIVE This study aimed to assess the relaxation response of uterine artery (UA) for CGRP, ADM, and ADM2 in nonpregnant and pregnant women and identify the involved mechanisms. FINDINGS (1) Segments of UA from nonpregnant women that were precontracted with U46619 (1μM) in vitro are insensitive to the hypotensive effects of CGRP, ADM, and ADM2; (2) CGRP, ADM, and ADM2 (0.1-100nM) dose dependently relax UA segments from pregnant women with efficacy for CGRP > ADM = ADM2; (3) the relaxation responses to CGRP, ADM, and ADM2 are differentially affected by the inhibitors of nitric oxide (NO) synthase (L-NAME), adenylyl cyclase (SQ22536), apamin, and charybdotoxin; (4) UA smooth muscle cells (UASMC) express mRNA for calcitonin receptor-like receptor (CRLR) and receptor activity modifying protein (RAMP)1 and RAMP2 but not RAMP3; (5) receptor heterodimer comprising CRLR/RAMP1 and CRLR/RAMP2 but not CRLR/RAMP3 is present in UA; (6) soluble fms-like tyrosine kinase (sFLT-1) and TNF-α treatment decrease the expression of RAMP1 mRNA (P < 0.05) in UASMC; and (7) sFLT-1 treatment impairs the association of CRLR with all 3 peptides while TNF-α inhibits the interaction of CGRP but not ADM or ADM2 with CRLR in UASMC (P < 0.05). CONCLUSIONS Relaxation sensitivity of UA for CGRP, ADM, and ADM2 is increased during pregnancy via peptide-specific involvement of NO system and endothelium-derived hyperpolarizing factors; vascular disruptors such as sFLT-1 and TNFα adversely impact their receptor system in UASMC.
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Affiliation(s)
- Madhu Chauhan
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX 77030, USA
- Correspondence: Madhu Chauhan, PhD, Department of Obstetrics and Gynecology, Baylor College of Medicine, 1102 bates Avenue, Houston, TX 77030, USA.
| | - Ancizar Betancourt
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Meena Balakrishnan
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Akansha Mishra
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jimmy Espinosa
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Alireza A Shamshirsaz
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Karin Fox
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Michael Belfort
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Chandra Yallampalli
- Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX 77030, USA
- Correspondence: Chandra Yallampalli, DMV, PhD, Department of Obstetrics and Gynecology, Baylor College of Medicine, 1102 bates Avenue, Houston, TX 77030, USA.
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Favoni V, Giani L, Al-Hassany L, Asioli GM, Butera C, de Boer I, Guglielmetti M, Koniari C, Mavridis T, Vaikjärv M, Verhagen I, Verzina A, Zick B, Martelletti P, Sacco S. CGRP and migraine from a cardiovascular point of view: what do we expect from blocking CGRP? J Headache Pain 2019; 20:27. [PMID: 30866804 PMCID: PMC6734543 DOI: 10.1186/s10194-019-0979-y] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 02/26/2019] [Indexed: 12/14/2022] Open
Abstract
Calcitonin gene-related peptide (CGRP) is a neuropeptide with a pivotal role in the pathophysiology of migraine. Blockade of CGRP is a new therapeutic target for patients with migraine. CGRP and its receptors are distributed not only in the central and peripheral nervous system but also in the cardiovascular system, both in blood vessels and in the heart. We reviewed the current evidence on the role of CGRP in the cardiovascular system in order to understand the possible short- and long-term effect of CGRP blockade with monoclonal antibodies in migraineurs.In physiological conditions, CGRP has important vasodilating effects and is thought to protect organs from ischemia. Despite the aforementioned cardiovascular implication, preventive treatment with CGRP antibodies has shown no relevant cardiovascular side effects. Results from long-term trials and from real life are now needed.
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Affiliation(s)
- Valentina Favoni
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Via Altura, 3 Pad. G, 40139 Bologna, Italy
| | - Luca Giani
- Ricovero Ferdinando Uboldi, Paderno Dugnano, Italy
| | - Linda Al-Hassany
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Gian Maria Asioli
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Via Altura, 3 Pad. G, 40139 Bologna, Italy
| | - Calogera Butera
- Dipartimento Neurologico e INSPE, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Irene de Boer
- Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands
| | - Martina Guglielmetti
- Department of Clinical and Molecular Medicine, Sapienza University, Rome, Italy
- Regional Referral Headache Center, Sant’Andrea Hospital, Rome, Italy
- Department of Clinical Pathology, University of Sassari, Sassari, Italy
| | - Chrysoula Koniari
- 1st Neurology Department, Aeginition Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Theodoros Mavridis
- 1st Neurology Department, Aeginition Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Marge Vaikjärv
- Faculty of Medicine, University of Tartu, Tartu, Estonia
| | - Iris Verhagen
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
- Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands
| | - Angela Verzina
- Neurology Clinic, University of Perugia, Perugia, Italy
- S. Maria della Misericordia Hospital, Perugia, Italy
| | - Bart Zick
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
- Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands
| | - Paolo Martelletti
- Department of Clinical and Molecular Medicine, Sapienza University, Rome, Italy
- Regional Referral Headache Center, Sant’Andrea Hospital, Rome, Italy
| | - Simona Sacco
- UOC Neurologia e Stroke Unit, Ospedale SS Filippo e Nicola, Avezzano, Italy
- Department of Applied Clinical Sciences and Biotechnology, University of L’Aquila, L’Aquila, Italy
| | - European Headache Federation School of Advanced Studies (EHF-SAS)
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Via Altura, 3 Pad. G, 40139 Bologna, Italy
- Ricovero Ferdinando Uboldi, Paderno Dugnano, Italy
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
- Dipartimento Neurologico e INSPE, IRCCS Ospedale San Raffaele, Milan, Italy
- Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands
- Department of Clinical and Molecular Medicine, Sapienza University, Rome, Italy
- Regional Referral Headache Center, Sant’Andrea Hospital, Rome, Italy
- Department of Clinical Pathology, University of Sassari, Sassari, Italy
- 1st Neurology Department, Aeginition Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
- Faculty of Medicine, University of Tartu, Tartu, Estonia
- Neurology Clinic, University of Perugia, Perugia, Italy
- S. Maria della Misericordia Hospital, Perugia, Italy
- UOC Neurologia e Stroke Unit, Ospedale SS Filippo e Nicola, Avezzano, Italy
- Department of Applied Clinical Sciences and Biotechnology, University of L’Aquila, L’Aquila, Italy
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Abstract
Increasing knowledge about the role of calcitonin gene-related peptide (CGRP) in migraine pathophysiology has led to the development of antibodies against this peptide or its receptor. However, CGRP is widely expressed throughout the body, participating not only in pathophysiological conditions but also in several physiological processes and homeostatic responses during pathophysiological events. Therefore, in this chapter, the risks of long-term blockade of the CGRP pathway will be discussed, with focus on the cardiovascular system, as this peptide has been described to have a protective role during ischemic events, and migraine patients present a higher risk of stroke and myocardial infarction.
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Affiliation(s)
- Eloísa Rubio-Beltrán
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Antoinette Maassen van den Brink
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands.
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5
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Deen M, Correnti E, Kamm K, Kelderman T, Papetti L, Rubio-Beltrán E, Vigneri S, Edvinsson L, Maassen Van Den Brink A. Blocking CGRP in migraine patients - a review of pros and cons. J Headache Pain 2017; 18:96. [PMID: 28948500 PMCID: PMC5612904 DOI: 10.1186/s10194-017-0807-1] [Citation(s) in RCA: 190] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 09/14/2017] [Indexed: 02/02/2023] Open
Abstract
Migraine is the most prevalent neurological disorder worldwide and it has immense socioeconomic impact. Currently, preventative treatment options for migraine include drugs developed for diseases other than migraine such as hypertension, depression and epilepsy. During the last decade, however, blocking calcitonin gene-related peptide (CGRP) has emerged as a possible mechanism for prevention of migraine attacks. CGRP has been shown to be released during migraine attacks and it may play a causative role in induction of migraine attacks. Here, we review the pros and cons of blocking CGRP in migraine patients. To date, two different classes of drugs blocking CGRP have been developed: small molecule CGRP receptor antagonists (gepants), and monoclonal antibodies, targeting either CGRP or the CGRP receptor. Several trials have been conducted to test the efficacy and safety of these drugs. In general, a superior efficacy compared to placebo has been shown, especially with regards to the antibodies. In addition, the efficacy is in line with other currently used prophylactic treatments. The drugs have also been well tolerated, except for some of the gepants, which induced a transient increase in transaminases. Thus, blocking CGRP in migraine patients is seemingly both efficient and well tolerated. However, CGRP and its receptor are abundantly present in both the vasculature, and in the peripheral and central nervous system, and are involved in several physiological processes. Therefore, blocking CGRP may pose a risk in subjects with comorbidities such as cardiovascular diseases. In addition, long-term effects are still unknown. Evidence from animal studies suggests that blocking CGRP may induce constipation, affect the homeostatic functions of the pituitary hormones or attenuate wound healing. However, these effects have so far not been reported in human studies. In conclusion, this review suggests that, based on current knowledge, the pros of blocking CGRP in migraine patients exceed the cons.
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Affiliation(s)
- Marie Deen
- Danish Headache Center, Department of Neurology, Rigshospitalet, Copenhagen, Denmark.
| | - Edvige Correnti
- Department of Child Neuropsychiatry, University of Palermo, Palermo, Italy
| | - Katharina Kamm
- Department of Neurology, University Hospital, LMU, Munich, Germany
| | - Tim Kelderman
- Department of Neurology, Ghent University Hospital, Ghent, Belgium
| | - Laura Papetti
- Headache Center, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Eloisa Rubio-Beltrán
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Simone Vigneri
- Department of Experimental Biomedicine and Clinical Neurosciences, University of Palermo; Advanced Algology Research and Pain Medicine Unit, Santa Maria Maddalena Hospital, Occhiobello, Italy
| | - Lars Edvinsson
- Department of Internal Medicine, Institute of Clinical Sciences, Lund University, Lund, Sweden
| | - Antoinette Maassen Van Den Brink
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
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MaassenVanDenBrink A, Meijer J, Villalón CM, Ferrari MD. Wiping Out CGRP: Potential Cardiovascular Risks. Trends Pharmacol Sci 2016; 37:779-788. [DOI: 10.1016/j.tips.2016.06.002] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 05/31/2016] [Accepted: 06/02/2016] [Indexed: 01/06/2023]
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Maleki N, Bernstein C, Napadow V, Field A. Migraine and Puberty: Potential Susceptible Brain Sites. Semin Pediatr Neurol 2016; 23:53-9. [PMID: 27017023 DOI: 10.1016/j.spen.2016.01.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Puberty is a sensitive and critical period for brain development. The relationship between developmental processes in the brain during puberty and the onset of migraine disease in relation to the potential sites of susceptibility in the brain remains largely unknown. There are few data on how such processes interact with each other in influencing the migraine onset during puberty or even later in adulthood. Focusing on the migraine brain during pubertal development may provide us with a "window of opportunity" both to better understand the mechanisms of the disease and, also more importantly, to effectively intervene.
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Affiliation(s)
- Nasim Maleki
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA; Department of Anesthesia, Boston Children's Hospital, Boston, MA.
| | - Carolyn Bernstein
- Department of Anesthesia, Beth Israel Deaconess Hospital, Harvard Medical School, Boston, MA
| | - Vitaly Napadow
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA; Department of Anesthesiology, Brigham and Women's Hospital, Boston, MA
| | - Alison Field
- Harvard T.H. Chan School of Public Health, Boston, MA; Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, Boston, MA; Department of Medicine, Brigham and Women's Hospital, Boston, MA; Department of Epidemiology, Brown University School of Public Heath, MA
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8
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Role of calcitonin gene-related peptide in bone repair after cyclic fatigue loading. PLoS One 2011; 6:e20386. [PMID: 21694766 PMCID: PMC3111413 DOI: 10.1371/journal.pone.0020386] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Accepted: 05/02/2011] [Indexed: 01/04/2023] Open
Abstract
Background Calcitonin gene related peptide (CGRP) is a neuropeptide that is abundant in the sensory neurons which innervate bone. The effects of CGRP on isolated bone cells have been widely studied, and CGRP is currently considered to be an osteoanabolic peptide that has effects on both osteoclasts and osteoblasts. However, relatively little is known about the physiological role of CGRP in-vivo in the skeletal responses to bone loading, particularly fatigue loading. Methodology/Principal Findings We used the rat ulna end-loading model to induce fatigue damage in the ulna unilaterally during cyclic loading. We postulated that CGRP would influence skeletal responses to cyclic fatigue loading. Rats were fatigue loaded and groups of rats were infused systemically with 0.9% saline, CGRP, or the receptor antagonist, CGRP8–37, for a 10 day study period. Ten days after fatigue loading, bone and serum CGRP concentrations, serum tartrate-resistant acid phosphatase 5b (TRAP5b) concentrations, and fatigue-induced skeletal responses were quantified. We found that cyclic fatigue loading led to increased CGRP concentrations in both loaded and contralateral ulnae. Administration of CGRP8–37 was associated with increased targeted remodeling in the fatigue-loaded ulna. Administration of CGRP or CGRP8–37 both increased reparative bone formation over the study period. Plasma concentration of TRAP5b was not significantly influenced by either CGRP or CGRP8–37 administration. Conclusions CGRP signaling modulates targeted remodeling of microdamage and reparative new bone formation after bone fatigue, and may be part of a neuronal signaling pathway which has regulatory effects on load-induced repair responses within the skeleton.
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Gangula PRR, Chauhan M, Reed L, Yallampalli C. Age-related changes in dorsal root ganglia, circulating and vascular calcitonin gene-related peptide (CGRP) concentrations in female rats: effect of female sex steroid hormones. Neurosci Lett 2009; 454:118-23. [PMID: 19429067 DOI: 10.1016/j.neulet.2009.02.068] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2009] [Revised: 02/20/2009] [Accepted: 02/28/2009] [Indexed: 11/16/2022]
Abstract
The aim of the present study is to investigate whether immunoreactive (I) calcitonin gene-related peptide (CGRP) content is decreased in plasma and mesenteric arteries (resistance arteries) in middle-aged rats and if so, whether sex steroid hormones enhance I-CGRP in middle-aged female rats. We also examined whether vascular CGRP receptor components, calcitonin receptor like receptor (CRLR) and receptor activity modifying protein 1 (RAMP1) are elevated by sex steroid hormones treatment in middle-aged female rats. Young adult (3 months old) and middle-aged (10-12 months old) ovariectomized rats were treated subcutaneously with estradiol-17beta (E2; 2 mg), progesterone (P4; 5 mg), E2+P4 (2 mg+20 mg) or placebo (control). Radioimmunoassay and Western blot analysis were performed to measure I-CGRP content and CGRP receptor components in dorsal root ganglia (DRG), in resistance arteries and in plasma. Immunofluorescent staining methods were employed to determine cellular localization of CRLR, RAMP1 in resistance arteries. Our data demonstrated that I-CGRP content was significantly (p<0.05) lower in the plasma and resistance arteries of middle-aged female rats compared to young controls. Both RAMP1 and CRLR were concentrated in vascular endothelium and the underlying smooth muscle cells. RAMP1 but not CRLR appeared to be decreased in middle-aged rat vasculature. Chronic perfusion of sex steroid hormones to ovariectomized rats: 1 significantly (p<0.05) elevated I-CGRP in the DRG and in the plasma, and (2) significantly elevated RAMP1 (p<0.05) but did not alter CRLR in resistance arteries. These data suggest that female sex steroid treatment enhances I-CGRP and its receptors, and thus regulate the blood pressure in aged female rats.
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Affiliation(s)
- Pandu R R Gangula
- Department of Obstetrics and Gynecology, Meharry Medical College, 1005 Dr. D.B. Todd Jr. Boulevard, Nashville, TN 37208, United States.
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10
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Hongbao M, Yan Y, Shen C. Gender-specific effects of calcitonin gene-related peptide and substance P on coronary blood flow in an experimental model. Angiology 2008; 60:569-75. [PMID: 19017671 DOI: 10.1177/0003319708325450] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Calcitonin gene-related peptide (CGRP) and substance P (SP) play counter-regulatory roles in coronary flow. This study is to assess whether effects of CGRP and SP are gender-specific. METHODS Langendorff-perfused hearts were used to compare coronary flow rates among 119 wild-type, alpha-CGRP and SP receptor knockout mice under various perfusion pressures (20, 30, 40, 50 mmHg). RESULTS For mouse heart coronary flow rate, deletion of alpha-CGRP gene resulted in significant reduction for both genders at all pressures; female CGRP knockout showed 15.3% reduction (P < .01); male CGRP knockout showed 13.8% reduction (P < .01); no significant difference between male and female CGRP knockout; female SP receptor knockout showed 13.9% increase (P < .01); female SP receptor knockout had a greater percentage decrease than male (P < .01). CONCLUSIONS CGRP plays similar roles as a vasodilator in males and females. SP seems to act as a vasoconstrictor in females.
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Affiliation(s)
- Ma Hongbao
- Bioengineering Department, Zhengzhou University, Zhengzhou, Henan, China.
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11
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Cutler SM, Cekic M, Miller DM, Wali B, VanLandingham JW, Stein DG. Progesterone improves acute recovery after traumatic brain injury in the aged rat. J Neurotrauma 2007; 24:1475-86. [PMID: 17892409 DOI: 10.1089/neu.2007.0294] [Citation(s) in RCA: 129] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Recent evidence has demonstrated that treatment with progesterone can attenuate many of the pathophysiological events following traumatic brain injury (TBI) in young adult rats, but this effect has not been investigated in aged animals. In this study, 20-month-old male Fischer 344 rats with bilateral contusions of the frontal cortex (n = 4 per group) or sham operations received 8, 16, or 32 mg/kg of progesterone or vehicle. Locomotor activity was measured at 72 h to assess behavioral recovery. Brain tissue was harvested at 24, 48, and 72 h, and Western blotting was performed for inflammatory and apoptotic factors. Edema was assessed at 48 h by measuring brain water content. Injured animals treated with 8 and 16 mg/kg progesterone showed decreased expression of COX-2, IL-6, and NFkappaB at all time points, indicating a reduction in the acute inflammatory process compared to vehicle. The 16 mg/kg group also showed reduced apoptosis at all time points as well as decreased edema and improved locomotor outcomes. Thus, in aged male rats, treatment with 16 mg/kg progesterone improves short-term motor recovery and attenuates edema, secondary inflammation, and cell death after TBI.
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Affiliation(s)
- Sarah M Cutler
- Department of Emergency Medicine, Emory University, Atlanta, Georgia 30322, USA
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12
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Abstract
Recent clinical trials in hormone therapy (HT) for women approaching or past menopause have been disappointing. Most women who have been taking conjugated equine estrogens combined with synthetic progestins have been encouraged to stop these supplements because of increased health risks. The results of the clinical trials may be accurate about the risks associated with the synthetic compounds and combinations, but the data do not reflect what might have been the case if 17beta-estradiol had been tested with natural progesterone instead of synthetic medroxyprogesterone acetate. For the most part, in almost all work on HT, estrogens have been given the primary focus despite the fact that progesterone has important properties that can enhance the repair of neurodegenerative and traumatic injuries to the central nervous system. This article reviews some of those properties and discusses the evidence suggesting that, if HT is to be reconsidered, progesterone should be given more attention as a potent neurotrophic agent that may play an important role in reducing or preventing motor, cognitive, and sensory impairments that can accompany senescence in both males and females.
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Affiliation(s)
- Donald G Stein
- Department of Emergency Medicine, Emory University School of Medicine, 1648 Pierce Dr., NE, Evans Bldg. Rm. 261, Atlanta, GA 30322, USA.
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13
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Balfagón G, Márquez-Rodas I, Alvarez Y, Alonso MJ, Cachofeiro V, Salaices M, Lahera V. Aldosterone modulates neural vasomotor response in hypertension: role of calcitonin gene-related peptide. ACTA ACUST UNITED AC 2005; 120:253-60. [PMID: 15177944 DOI: 10.1016/j.regpep.2004.03.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2003] [Revised: 03/16/2004] [Accepted: 03/26/2004] [Indexed: 11/27/2022]
Abstract
OBJECTIVE We analyse the effect of aldosterone on vasomotor response induced by electrical field stimulation (EFS) in mesenteric arteries from Wistar Kyoto (WKY) and spontaneously hypertensive rats (SHR). RESULTS Aldosterone (0.001-1 microM) reduced vasoconstrictor response to EFS in a dose- and time-dependent manner only in SHR. Thus, the rest of experiments were performed only in SHR. Aldosterone did not affect either noradrenaline response or release. Effect of aldosterone (1 microM) on EFS response was not affected by NG-nitro-arginine-methyl esther (100 microM), and was abolished by capsaicin (0.5 microM) and the calcitonin gene-related peptide antagonist (CGRP 8-37, 0.5 microM). Calcitonin gene-related peptide (0.1 nM-0.1 microM) induced a concentration-dependent relaxation, which was enhanced by aldosterone (1 microM). Incubation with either spironolactone (1 microM), glibenclamide (10 microM), RU 486 10 microM, ODQ (10 microM) or cycloheximide (10 microM) significantly reduced the enhancement of CGRP-relaxation produced by aldosterone, while remained unmodified by SQ 22,536. CONCLUSIONS Aldosterone decreases the vasoconstrictor response to EFS in mesenteric arteries from SHR but not from WKY. This effect is mediated by an increased response to the sensory neurotransmitter CGRP, substantially, through glucocorticoid receptors activation. Furthermore, this effect is mediated by an increase of cGMP synthesis and ATP-dependent potassium channel activation.
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Affiliation(s)
- Gloria Balfagón
- Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma de Madrid, C/Arzobispo Morcillo, 4, 28029, Spain.
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Anti-aging medicine literaturewatch. JOURNAL OF ANTI-AGING MEDICINE 2003; 6:45-64. [PMID: 12971397 DOI: 10.1089/109454503765361588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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