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Norimatsu K, Nakanishi K, Ijuin T, Otsuka S, Takada S, Tani A, Matsuzaki R, Matsuoka T, Sakakima H. Effects of low-intensity exercise on spontaneously developed knee osteoarthritis in male senescence-accelerated mouse prone 8. Arthritis Res Ther 2023; 25:168. [PMID: 37710278 PMCID: PMC10500802 DOI: 10.1186/s13075-023-03162-z] [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: 02/28/2023] [Accepted: 09/06/2023] [Indexed: 09/16/2023] Open
Abstract
BACKGROUND Osteoarthritis (OA) is a degenerative joint disease associated with aging, which often leads to joint stiffness and disability. Exercise is one of the most important non-pharmacological treatments and is prescribed as an indispensable treatment for OA. However, whether physical exercise is beneficial for preventing the progression of OA symptoms with age is poorly understood. We investigated the effects of exercise on spontaneously developed knee OA using male senescence-accelerated mouse prone 8 (SAMP8). METHODS To examine age-related changes in the knee joints of SAMP8, knee articular cartilage changes, synovitis, knee joint flexion and extension angles, swelling, walking ability, and quadriceps muscle atrophy were analyzed at 3, 5, 7, and 9 months. SAMP8 were required to run at a speed of 10 m/min for 15 min/day from 7 to 9 months of age. The knee joint pathologies and symptoms of exercising and non-exercising mice were compared by histological, immunohistochemical, and morphometrical analyses. RESULTS The mice presented with various histological changes, including cartilage destruction, osteocyte formation, synovitis, declined joint angles, and swelling. Notably, medial and posterior cartilage destruction was more severe than that of the lateral and anterior cartilage. Knee joint angles were significantly correlated with the histological scores (modified Mankin and OARSI, osteophyte formation and synovial lining cell layer). Exercise did not attenuate cartilage degeneration in the medial and posterior tibial plateau, although the articular cartilage of the anterior and lateral tibial plateau and its histological scores was remained and significantly improved, respectively, by exercise. Exercise suppressed the age-related decline of collagen type II-positive areas in the remaining articular cartilage and improved the OA symptoms. Exercise reduced the expression of monocyte chemoattractant protein (MCP)-1 and tumor necrosis factor (TNF)-α positive macrophages in the synovium. CONCLUSION This study revealed that SAMP8 developed spontaneous knee OA with age, which resembled the disease symptoms in humans. Low-intensity exercise temporarily alleviated degeneration of the remaining cartilage, synovitis, and age-related decreases in knee flexion angle, stride length, and muscle atrophy in SAMP8. However, exercise during OA progression with age may cause mechanical stress that could be both beneficial and detrimental to joint health.
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Affiliation(s)
- Kosuke Norimatsu
- Department of Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University, 8-35-1, Sakuragaoka, Kagoshima, 890-8544, Japan
| | - Kazuki Nakanishi
- Department of Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University, 8-35-1, Sakuragaoka, Kagoshima, 890-8544, Japan
| | - Toshiro Ijuin
- Department of Orthopaedic Surgery, Kagoshima University, Kagoshima, Japan
| | - Shotaro Otsuka
- Department of Systems Biology in Thromboregulation, Kagoshima University Graduate School of Medical and Dental Science, Kagoshima, Japan
| | - Seiya Takada
- Department of Systems Biology in Thromboregulation, Kagoshima University Graduate School of Medical and Dental Science, Kagoshima, Japan
| | - Akira Tani
- Department of Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University, 8-35-1, Sakuragaoka, Kagoshima, 890-8544, Japan
| | - Ryoma Matsuzaki
- Department of Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University, 8-35-1, Sakuragaoka, Kagoshima, 890-8544, Japan
| | - Teruki Matsuoka
- Department of Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University, 8-35-1, Sakuragaoka, Kagoshima, 890-8544, Japan
| | - Harutoshi Sakakima
- Department of Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University, 8-35-1, Sakuragaoka, Kagoshima, 890-8544, Japan.
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Costa TJ, Barros PR, Duarte DA, Silva-Neto JA, Hott SC, Santos-Silva T, Costa-Neto CM, Gomes FV, Akamine EH, McCarthy CG, Jimenez-Altayó F, Dantas AP, Tostes RC. Carotid dysfunction in senescent female mice is mediated by increased α 1A-adrenoceptor activity and COX-derived vasoconstrictor prostanoids. Am J Physiol Heart Circ Physiol 2023; 324:H417-H429. [PMID: 36705993 DOI: 10.1152/ajpheart.00495.2022] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
α-Adrenergic receptors are crucial regulators of vascular hemodynamics and essential pharmacological targets for cardiovascular diseases. With aging, there is an increase in sympathetic activation, which could contribute to the progression of aging-associated cardiovascular dysfunction, including stroke. Nevertheless, there is little information directly associating adrenergic receptor dysfunction in the blood vessels of aged females. This study determined the role of a-adrenergic receptors in carotid dysfunction of senescent female mice (accelerated-senescence prone, SAMP8), compared with a nonsenescent (accelerated-senescence prone, SAMR1). Vasoconstriction to phenylephrine (Phe) was markedly increased in common carotid artery of SAMP8 [area under the curve (AUC), 527 ± 53] compared with SAMR1 (AUC, 334 ± 30, P = 0.006). There were no changes in vascular responses to the vasoconstrictor agent U46619 or the vasodilators acetylcholine (ACh) and sodium nitroprusside (NPS). Hyperactivity to Phe in female SAMP8 was reduced by cyclooxygenase-1 and cyclooxygenase-2 inhibition and associated with augmented ratio of TXA2/PGI2 release (SAMR1, 1.1 ± 0.1 vs. SAMP8, 2.1 ± 0.3, P = 0.007). However, no changes in cyclooxygenase expression were seen in SAMP8 carotids. Selective α1A-receptor antagonism markedly reduced maximal contraction, whereas α1D antagonism induced a minor shift in Phe contraction in SAMP8 carotids. Ligand binding analysis revealed a threefold increase of α-adrenergic receptor density in smooth muscle cells (VSMCs) of SAMP8 vs. SAMR1. Phe rapidly increased intracellular calcium (Cai2+) in VSMCs via the α1A-receptor, with a higher peak in VSMCs from SAMP8. In conclusion, senescence intensifies vasoconstriction mediated by α1A-adrenergic signaling in the carotid of female mice by mechanisms involving increased Cai2+ and release of cyclooxygenase-derived prostanoids.NEW & NOTEWORTHY The present study provides evidence that senescence induces hyperreactivity of α1-adrenoceptor-mediated contraction of the common carotid. Impairment of α1-adrenoceptor responses is linked to increased Ca2+ influx and release of COX-derived vasoconstrictor prostanoids, contributing to carotid dysfunction in the murine model of female senescence (SAMP8). Increased reactivity of the common carotid artery during senescence may lead to morphological and functional changes in arteries of the cerebral microcirculation and contribute to cognitive decline in females. Because the elderly population is growing, elucidating the mechanisms of aging- and sex-associated vascular dysfunction is critical to better direct pharmacological and lifestyle interventions to prevent cardiovascular risk in both sexes.
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Affiliation(s)
- Tiago J Costa
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Cell Biology and Anatomy, Cardiovascular Translational Research Center, University of South Carolina, Columbia, South Carolina, United States
| | - Paula R Barros
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Diego A Duarte
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Biochemistry and Immunology, School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Júlio A Silva-Neto
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Sara Cristina Hott
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Thamyris Santos-Silva
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Claudio M Costa-Neto
- Department of Biochemistry and Immunology, School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Felipe V Gomes
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Eliana H Akamine
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Cameron G McCarthy
- Department of Cell Biology and Anatomy, Cardiovascular Translational Research Center, University of South Carolina, Columbia, South Carolina, United States
| | - Francesc Jimenez-Altayó
- Department of Pharmacology, Therapeutic, and Toxicology, School of Medicine, Neuroscience Institute, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Ana Paula Dantas
- Laboratory of Experimental Cardiology, Institut d'Investigacions Biomediques August Pi i Sunyer, Hospital Clinic Cardiovascular Institute, Barcelona, Spain
| | - Rita C Tostes
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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Sakamuri A, Ogola BO. The intersection between senescence-mediated vascular dysfunction and cognitive impairment in female mice. Am J Physiol Heart Circ Physiol 2023; 324:H411-H413. [PMID: 36800510 PMCID: PMC9988518 DOI: 10.1152/ajpheart.00076.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 02/15/2023] [Accepted: 02/15/2023] [Indexed: 02/19/2023]
Affiliation(s)
- Anil Sakamuri
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, United States
| | - Bernard Ojwang Ogola
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, United States
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, United States
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Barros PR, Costa TJ, Akamine EH, Tostes RC. Vascular Aging in Rodent Models: Contrasting Mechanisms Driving the Female and Male Vascular Senescence. FRONTIERS IN AGING 2021; 2:727604. [PMID: 35821995 PMCID: PMC9261394 DOI: 10.3389/fragi.2021.727604] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 08/25/2021] [Indexed: 12/12/2022]
Abstract
Increasing scientific interest has been directed to sex as a biological and decisive factor on several diseases. Several different mechanisms orchestrate vascular function, as well as vascular dysfunction in cardiovascular and metabolic diseases in males and females. Certain vascular sex differences are present throughout life, while others are more evident before the menopause, suggesting two important and correlated drivers: genetic and hormonal factors. With the increasing life expectancy and aging population, studies on aging-related diseases and aging-related physiological changes have steeply grown and, with them, the use of aging animal models. Mouse and rat models of aging, the most studied laboratory animals in aging research, exhibit sex differences in many systems and physiological functions, as well as sex differences in the aging process and aging-associated cardiovascular changes. In the present review, we introduce the most common aging and senescence-accelerated animal models and emphasize that sex is a biological variable that should be considered in aging studies. Sex differences in the cardiovascular system, with a focus on sex differences in aging-associated vascular alterations (endothelial dysfunction, remodeling and oxidative and inflammatory processes) in these animal models are reviewed and discussed.
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Affiliation(s)
- Paula R. Barros
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Tiago J. Costa
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Eliana H. Akamine
- Department of Pharmacology, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil
- *Correspondence: Rita C. Tostes, ; Eliana H. Akamine,
| | - Rita C. Tostes
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
- *Correspondence: Rita C. Tostes, ; Eliana H. Akamine,
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Casado A, López-de-Eguileta A, Fonseca S, Cerveró A, Gaitán J. <p>Retinal Artery Contraction After Phenylephrine as a Cardiovascular Risk Biomarker</p>. Clin Ophthalmol 2020; 14:1269-1275. [PMID: 32494117 PMCID: PMC7227810 DOI: 10.2147/opth.s247680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 04/01/2020] [Indexed: 11/30/2022] Open
Abstract
Background and Aim We investigated the in vivo changes of artery diameter (AD) and vein diameter (VD) after topical phenylephrine 2.5% instillation, and its relationship with the Systematic Coronary Risk Evaluation (SCORE). Methods This is a cross-sectional study. Healthy control patients were included. All of the participants underwent enhanced depth imaging by spectral-domain optical coherence tomography before and 30 minutes after phenylephrine instillation, using eye-tracking and follow-up software. Changes in AD and VD were assessed. Results The study included 45 eyes of 45 patients (14 males and 31 females). The mean age was 58.6 ± 15.1 years (26–88 years). Mean SCORE risk estimation value was 2.0 (0–14). No significant correlation was found between pre-phenylephrine AD or VD with age (p=0.237 and p=0.821, respectively), SCORE (p=0.545 and p=0.723, respectively). AD significant thinned after phenylephrine (p<0.001), whereas no significant changes could be depicted in VD (p=0.474). Changes in AD after phenylephrine were significantly related with SCORE risk estimation (p=0.035). Discordantly, changes in VD after phenylephrine were not significantly related with SCORE (p=0.505). Conclusion As a significant thinning of AD occurred following phenylephrine instillation, and as the magnitude of this thinning is related with SCORE, it is useful to test the retinal artery contraction to infer the cardiovascular health status.
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Affiliation(s)
- Alfonso Casado
- Department of Ophthalmology, Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | | | - Soraya Fonseca
- Department of Ophthalmology, Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - Andrea Cerveró
- Department of Ophthalmology, Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - Jorge Gaitán
- Department of Ophthalmology, Hospital Universitario Marqués de Valdecilla, Santander, Spain
- Correspondence: Jorge Gaitán Ophthalmology Department, Hospital Marqués de Valdecilla, Av. Valdecilla, 25, Santander39008, Cantabria, SpainTel +34 605762803 Email
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Stenosis coexists with compromised α1-adrenergic contractions in the ascending aorta of a mouse model of Williams-Beuren syndrome. Sci Rep 2020; 10:889. [PMID: 31965005 PMCID: PMC6972706 DOI: 10.1038/s41598-020-57803-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 01/07/2020] [Indexed: 11/08/2022] Open
Abstract
Williams-Beuren syndrome (WBS) is a rare disorder caused by a heterozygous deletion of 26–28 contiguous genes that affects the brain and cardiovascular system. Here, we investigated whether WBS affects aortic structure and function in the complete deletion (CD) mouse model harbouring the most common deletion found in WBS patients. Thoracic aortas from 3–4 months-old male CD mice and wild-type littermates were mounted in wire myographs or were processed for histomorphometrical analysis. Nitric oxide synthase (NOS) isoforms and oxidative stress levels were assessed. Ascending aortas from young adult CD mice showed moderate (50%) luminal stenosis, whereas endothelial function and oxidative stress were comparable to wild-type. CD mice showed greater contractions to KCl. However, α1-adrenergic contractions to phenylephrine, but not with a thromboxane analogue, were compromised. Decreased phenylephrine responses were not affected by selective inducible NOS blockade with 1400 W, but were prevented by the non-selective NOS inhibitor L-NAME and the selective neuronal NOS inhibitor SMTC. Consistently, CD mice showed increased neuronal NOS expression in aortas. Overall, aortic stenosis in CD mice coexists with excessive nNOS-derived NO signaling that compromises ascending aorta α1-adrenergic contractions. We suggest that increased neuronal NOS signaling may act as a physiological ‘brake’ against the detrimental effects of stenosis.
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Mesenchymal stem cell senescence alleviates their intrinsic and seno-suppressive paracrine properties contributing to osteoarthritis development. Aging (Albany NY) 2019; 11:9128-9146. [PMID: 31644429 PMCID: PMC6834426 DOI: 10.18632/aging.102379] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 10/14/2019] [Indexed: 12/21/2022]
Abstract
Tissue accumulation of p16INK4a-positive senescent cells is associated with age-related disorders, such as osteoarthritis (OA). These cell-cycle arrested cells affect tissue function through a specific secretory phenotype. The links between OA onset and senescence remain poorly described. Using experimental OA protocol and transgenic Cdkn2a+/luc and Cdkn2aluc/luc mice, we found that the senescence-driving p16INK4a is a marker of the disease, expressed by the synovial tissue, but is also an actor: its somatic deletion partially protects against cartilage degeneration. We test whether by becoming senescent, the mesenchymal stromal/stem cells (MSCs), found in the synovial tissue and sub-chondral bone marrow, can contribute to OA development. We established an in vitro p16INK4a-positive senescence model on human MSCs. Upon senescence induction, their intrinsic stem cell properties are altered. When co-cultured with OA chondrocytes, senescent MSC show also a seno-suppressive properties impairment favoring tissue degeneration. To evaluate in vivo the effects of p16INK4a-senescent MSC on healthy cartilage, we rely on the SAMP8 mouse model of accelerated senescence that develops spontaneous OA. MSCs isolated from these mice expressed p16INK4a. Intra-articular injection in 2-month-old C57BL/6JRj male mice of SAMP8-derived MSCs was sufficient to induce articular cartilage breakdown. Our findings reveal that senescent p16INK4a-positive MSCs contribute to joint alteration.
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McCarthy CG, Wenceslau CF, Webb RC, Joe B. Novel Contributors and Mechanisms of Cellular Senescence in Hypertension-Associated Premature Vascular Aging. Am J Hypertens 2019; 32:709-719. [PMID: 30982879 DOI: 10.1093/ajh/hpz052] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/25/2019] [Accepted: 04/10/2019] [Indexed: 01/08/2023] Open
Abstract
Hypertension has been described as a condition of premature vascular aging, relative to actual chronological age. In fact, many factors that contribute to the deterioration of vascular function as we age are accelerated in hypertension. Nonetheless, the precise mechanisms that underlie the aged phenotype of arteries from hypertensive patients and animals remain elusive. Cellular senescence is an age-related physiologic process in which cells undergo irreversible growth arrest. Although controlled senescence negatively regulates cell proliferation and promotes tissue regeneration, uncontrolled senescence can contribute to disease pathogenesis by presenting the senescence-associated secretory phenotype, in which molecules such as proinflammatory cytokines, matrix metalloproteases, and reactive oxygen species are released into tissue microenvironments. This review will address and critically evaluate the current literature on the role of cellular senescence in hypertension, with particular emphasis on cells types that mediate and modulate vascular function and structure.
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Affiliation(s)
- Cameron G McCarthy
- Center for Hypertension and Precision Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio, USA
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio, USA
| | - Camilla F Wenceslau
- Center for Hypertension and Precision Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio, USA
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio, USA
| | - R Clinton Webb
- Department of Physiology, Augusta University, Augusta, Georgia, USA
| | - Bina Joe
- Center for Hypertension and Precision Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio, USA
- Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio, USA
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Arce C, Vicente D, Segura V, Flacco N, Montó F, Almenar L, Agüero J, Rueda J, Jiménez-Altayó F, Vila E, Noguera MA, D'Ocon P, Ivorra MD. Activation of α 1A -adrenoceptors desensitizes the rat aorta response to phenylephrine through a neuronal NOS pathway, a mechanism lost with ageing. Br J Pharmacol 2017; 174:2015-2030. [PMID: 28369791 DOI: 10.1111/bph.13800] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 03/07/2017] [Accepted: 03/09/2017] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND AND PURPOSE A NO-mediated desensitization of vasoconstrictor responses evoked by stimulation of α1 -adrenoceptors has been reported in different vessels. We investigated the involvement of each α1 -adrenoceptor subtype and constitutive NOS isoforms and the influence of ageing and hypertension on this process. EXPERIMENTAL APPROACH Wistar and spontaneously hypertensive rats (SHR), 16, 32, 52 and 72 weeks-old, were used to evaluate the desensitization process. Expression of α1 -adrenoceptor subtypes, endothelial NOS (eNOS) and neuronal NOS (nNOS) were determined in rat aorta and left ventricle (LV). Expression levels were also evaluated in LV of a group of heart failure patients with a wide age range. KEY RESULTS Repeated application of phenylephrine decreased subsequent α1 -adrenoceptor-mediated vasoconstriction by increasing nNOS protein expression in aorta, but not in tail or mesenteric resistance arteries, where mRNA levels of nNOS were undetectable. This desensitization process disappeared in the absence of endothelium or in the presence of L-NAME (100 μM), nNOS inhibitors, SMTC (1 μM) and TRIM (100 μM), and 5-methylurapidil (100 nM, α1A -antagonist), but not BMY7378 (10 nM, α1D -antagonist). The α1A /nNOS-mediated desensitization was absent in aged SHR and Wistar animals, where the expression of α1A -adrenoceptors was reduced in aorta and LV. In human LV, a negative correlation was found between age and α1A -adrenoceptor expression. CONCLUSIONS AND IMPLICATIONS The α1A -adrenoceptor subtype, through endothelial nNOS-derived NO, may act as a physiological 'brake' against the detrimental effects of excessive α1 -adrenoceptor-mediated vasoconstriction. Reduced α1A -adrenoceptor- and nNOS-mediated desensitization in aged patients could be involved in the age-dependent elevation of adrenergic activity.
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Affiliation(s)
- Cristina Arce
- Departamento de Farmacología, Facultad de Farmacia, Universitat de València, Burjassot, Spain.,Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universitat de València, Burjassot, Spain
| | - Diana Vicente
- Departamento de Farmacología, Facultad de Farmacia, Universitat de València, Burjassot, Spain
| | - Vanessa Segura
- Departamento de Farmacología, Facultad de Farmacia, Universitat de València, Burjassot, Spain
| | - Nicla Flacco
- Departamento de Farmacología, Facultad de Farmacia, Universitat de València, Burjassot, Spain
| | - Fermi Montó
- Departamento de Farmacología, Facultad de Farmacia, Universitat de València, Burjassot, Spain.,Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universitat de València, Burjassot, Spain
| | - Luis Almenar
- Unidad de Insuficiencia Cardiaca y Trasplantes, Servicio de Cardiología, Hospital Universitario La Fe, Valencia, Spain
| | - Jaime Agüero
- Unidad de Insuficiencia Cardiaca y Trasplantes, Servicio de Cardiología, Hospital Universitario La Fe, Valencia, Spain
| | - Joaquín Rueda
- Unidad de Insuficiencia Cardiaca y Trasplantes, Servicio de Cardiología, Hospital Universitario La Fe, Valencia, Spain
| | - Francesc Jiménez-Altayó
- Facultat de Medicina, Departament de Farmacologia, Terapèutica i Toxicologia, Institut de Neurociències, Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), Spain
| | - Elisabet Vila
- Facultat de Medicina, Departament de Farmacologia, Terapèutica i Toxicologia, Institut de Neurociències, Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), Spain
| | - Maria Antonia Noguera
- Departamento de Farmacología, Facultad de Farmacia, Universitat de València, Burjassot, Spain.,Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universitat de València, Burjassot, Spain
| | - Pilar D'Ocon
- Departamento de Farmacología, Facultad de Farmacia, Universitat de València, Burjassot, Spain.,Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universitat de València, Burjassot, Spain
| | - Maria Dolores Ivorra
- Departamento de Farmacología, Facultad de Farmacia, Universitat de València, Burjassot, Spain.,Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universitat de València, Burjassot, Spain
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Costa G, Garabito M, Jiménez-Altayó F, Onetti Y, Sabate M, Vila E, Dantas AP. Sex differences in angiotensin II responses contribute to a differential regulation of cox-mediated vascular dysfunction during aging. Exp Gerontol 2016; 85:71-80. [DOI: 10.1016/j.exger.2016.09.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 09/22/2016] [Accepted: 09/28/2016] [Indexed: 12/01/2022]
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11
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Ma D, Zhu Y, Li Y, Yang C, Zhang L, Li Y, Li L, Zhang L. Beneficial effects of cornel iridoid glycoside on behavioral impairment and senescence status in SAMP8 mice at different ages. Behav Brain Res 2016; 312:20-9. [PMID: 27283974 DOI: 10.1016/j.bbr.2016.06.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 06/01/2016] [Accepted: 06/05/2016] [Indexed: 11/27/2022]
Abstract
The aim of the present study was to investigate the effects of cornel iridoid glycoside (CIG) on behavioral changes and senescent status in senescence-accelerated mouse-prone 8 (SAMP8) mice at different ages (6, 10, and 14 months old). The learning and memory ability, the motor function and the aging conditions of SAMP8 mice were evaluated after CIG treatment in this study. Results showed that intragastrical administration of CIG (100 and 200mg/kg) for two months obviously improved the impaired cognitive ability of SAMP8 mice at the age of 6 months and 10 months, respectively. The treatment with CIG significantly increased the motor function of SAMP8 mice at 10 months and 14 months of age, respectively. CIG also evidently decreased the high grading score of senescence and increased the low surviving rate of SAMP8 mice at the age of 14 months. In addition, CIG treatment inhibited tau hyperphosphorylation in the hippocampus and striatum of SAMP8 mice at different ages. Together, these results indicate that CIG represent a potentially useful treatment for ameliorating the impaired cognitive ability, the motor dysfunction, aging conditions and hyperphosphorylation of tau in aging and age-related neurodegenerative diseases, such as Alzheimer's disease.
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Affiliation(s)
- Denglei Ma
- Department of Pharmacology, Xuanwu Hospital of Capital Medical University, Beijing Institute for Brain Disorders, Beijing Engineering Research Center for Nerve System Drugs, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing 100053, China
| | - Yanqiu Zhu
- Department of Pharmacology, Xuanwu Hospital of Capital Medical University, Beijing Institute for Brain Disorders, Beijing Engineering Research Center for Nerve System Drugs, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing 100053, China
| | - Yanzheng Li
- Department of Pharmacology, Xuanwu Hospital of Capital Medical University, Beijing Institute for Brain Disorders, Beijing Engineering Research Center for Nerve System Drugs, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing 100053, China
| | - Cuicui Yang
- Department of Pharmacology, Xuanwu Hospital of Capital Medical University, Beijing Institute for Brain Disorders, Beijing Engineering Research Center for Nerve System Drugs, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing 100053, China
| | - Li Zhang
- Department of Pharmacology, Xuanwu Hospital of Capital Medical University, Beijing Institute for Brain Disorders, Beijing Engineering Research Center for Nerve System Drugs, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing 100053, China
| | - Yali Li
- Department of Pharmacology, Xuanwu Hospital of Capital Medical University, Beijing Institute for Brain Disorders, Beijing Engineering Research Center for Nerve System Drugs, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing 100053, China
| | - Lin Li
- Department of Pharmacology, Xuanwu Hospital of Capital Medical University, Beijing Institute for Brain Disorders, Beijing Engineering Research Center for Nerve System Drugs, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing 100053, China.
| | - Lan Zhang
- Department of Pharmacology, Xuanwu Hospital of Capital Medical University, Beijing Institute for Brain Disorders, Beijing Engineering Research Center for Nerve System Drugs, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing 100053, China.
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Simplicio JA, Resstel LB, Tirapelli DP, D'Orléans-Juste P, Tirapelli CR. Contribution of oxidative stress and prostanoids in endothelial dysfunction induced by chronic fluoxetine treatment. Vascul Pharmacol 2015; 73:124-37. [DOI: 10.1016/j.vph.2015.06.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 06/26/2015] [Accepted: 06/29/2015] [Indexed: 10/23/2022]
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Western diet consumption promotes vascular remodeling in non-senescent mice consistent with accelerated senescence, but does not modify vascular morphology in senescent ones. Exp Gerontol 2014; 55:1-11. [DOI: 10.1016/j.exger.2014.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 02/20/2014] [Accepted: 03/02/2014] [Indexed: 11/17/2022]
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Western-type diet induces senescence, modifies vascular function in non-senescence mice and triggers adaptive mechanisms in senescent ones. Exp Gerontol 2013; 48:1410-9. [DOI: 10.1016/j.exger.2013.09.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 08/16/2013] [Accepted: 09/12/2013] [Indexed: 11/17/2022]
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Mice long-term high-fat diet feeding recapitulates human cardiovascular alterations: an animal model to study the early phases of diabetic cardiomyopathy. PLoS One 2013; 8:e60931. [PMID: 23593350 PMCID: PMC3623942 DOI: 10.1371/journal.pone.0060931] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Accepted: 03/04/2013] [Indexed: 11/30/2022] Open
Abstract
Background/Aim Hypercaloric diet ingestion and sedentary lifestyle result in obesity. Metabolic syndrome is a cluster of clinical features secondary to obesity, considered as a pre-diabetic condition and recognized as an independent risk factor for cardiovascular diseases. To better understand the relationship between obesity, metabolic syndrome and cardiovascular disease as well as for the development of novel therapeutic strategies, animal models that reproduce the etiology, course and outcomes of these pathologies are required. The aim of this work was to characterize the long-term effects of high-fat diet-induced obesity on the mice cardiovascular system, in order to make available a new animal model for diabetic cardiomyopathy. Methods/Results Male C57BL/6 mice were fed with a standardized high-fat diet (obese) or regular diet (normal) for 16 months. Metabolic syndrome was evaluated testing plasma glucose, triglycerides, cholesterol, insulin, and glucose tolerance. Arterial pressure was measured using a sphygmomanometer (non invasive method) and by hemodynamic parameters (invasive method). Cardiac anatomy was described based on echocardiography and histological studies. Cardiac function was assessed by cardiac catheterization under a stress test. Cardiac remodelling and metabolic biomarkers were assessed by RT-qPCR and immunoblotting. As of month eight, the obese mice were overweight, hyperglycaemic, insulin resistant, hyperinsulinemic and hypercholesterolemic. At month 16, they also presented normal arterial pressure but altered vascular reactivity (vasoconstriction), and cardiac contractility reserve reduction, heart mass increase, cardiomyocyte hypertrophy, cardiac fibrosis, and heart metabolic compensations. By contrast, the normal mice remained healthy throughout the study. Conclusions Mice fed with a high-fat diet for prolonged time recapitulates the etiology, course and outcomes of the early phases of human diabetic cardiomyopathy.
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