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Badran M, Puech C, Khalyfa A, Cortese R, Cataldo K, Qiao Z, Gozal D. Senolytic-facilitated Reversal of End-Organ Dysfunction in a Murine Model of Obstructive Sleep Apnea. Am J Respir Crit Care Med 2024; 209:1001-1012. [PMID: 38113165 DOI: 10.1164/rccm.202306-1101oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 12/19/2023] [Indexed: 12/21/2023] Open
Abstract
Rationale: Obstructive sleep apnea (OSA) is a highly prevalent condition that is associated with accelerated biological aging and multiple end-organ morbidities. Current treatments, such as continuous positive airway pressure (CPAP), have shown limited cognitive, metabolic, and cardiovascular beneficial outcomes despite adherence. Thus, adjunct therapies aiming to reduce OSA burden, such as senolytics, could improve OSA outcomes.Objectives: To assess if targeting senescence in addition to partial normoxia mimicking "good" CPAP adherence can improve physiological outcomes in mice exposed to chronic intermittent hypoxia.Methods: We compared the effects of 6 weeks of therapy with either partial normoxic recovery alone or combined with the senolytic navitoclax after 16 weeks of intermittent hypoxia exposures, a hallmark of OSA, on multiphenotypic cardiometabolic and neurocognitive parameters.Measurements and Main Results: Our findings indicate that only when combined with navitoclax, partial normoxic recovery significantly improved sleepiness (sleep in the dark phase: 34% ± 4% vs. 26% ± 3%; P < 0.01), cognition (preference score: 51% ± 19% vs. 70% ± 11%; P = 0.048), coronary artery function (response to acetylcholine [vasodilation]: 56% ± 13% vs. 72% ± 10%; P < 0.001), glucose, and lipid metabolism and reduced intestinal permeability and senescence in multiple organs.Conclusions: These findings indicate that the reversibility of end-organ morbidities induced by OSA is not only contingent on restoration of normal oxygenation patterns but can be further enhanced by targeting other OSA-mediated detrimental cellular processes, such as accelerated senescence.
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Affiliation(s)
- Mohammad Badran
- Department of Child Health and Child Health Research Institute, School of Medicine, University of Missouri, Columbia, Missouri; and
| | - Clementine Puech
- Department of Child Health and Child Health Research Institute, School of Medicine, University of Missouri, Columbia, Missouri; and
| | - Abdelnaby Khalyfa
- Department of Child Health and Child Health Research Institute, School of Medicine, University of Missouri, Columbia, Missouri; and
| | - Rene Cortese
- Department of Child Health and Child Health Research Institute, School of Medicine, University of Missouri, Columbia, Missouri; and
| | - Kylie Cataldo
- Department of Child Health and Child Health Research Institute, School of Medicine, University of Missouri, Columbia, Missouri; and
| | - Zhuanhong Qiao
- Department of Child Health and Child Health Research Institute, School of Medicine, University of Missouri, Columbia, Missouri; and
| | - David Gozal
- Department of Child Health and Child Health Research Institute, School of Medicine, University of Missouri, Columbia, Missouri; and
- Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia
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Puech C, Badran M, Runion AR, Barrow MB, Cataldo K, Gozal D. Cognitive Impairments, Neuroinflammation and Blood-Brain Barrier Permeability in Mice Exposed to Chronic Sleep Fragmentation during the Daylight Period. Int J Mol Sci 2023; 24:9880. [PMID: 37373028 DOI: 10.3390/ijms24129880] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/06/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Obstructive sleep apnea (OSA) is a chronic condition characterized by intermittent hypoxia (IH) and sleep fragmentation (SF). In murine models, chronic SF can impair endothelial function and induce cognitive declines. These deficits are likely mediated, at least in part, by alterations in Blood-brain barrier (BBB) integrity. Male C57Bl/6J mice were randomly assigned to SF or sleep control (SC) conditions for 4 or 9 weeks and in a subset 2 or 6 weeks of normal sleep recovery. The presence of inflammation and microglia activation were evaluated. Explicit memory function was assessed with the novel object recognition (NOR) test, while BBB permeability was determined by systemic dextran-4kDA-FITC injection and Claudin 5 expression. SF exposures resulted in decreased NOR performance and in increased inflammatory markers and microglial activation, as well as enhanced BBB permeability. Explicit memory and BBB permeability were significantly associated. BBB permeability remained elevated after 2 weeks of sleep recovery (p < 0.01) and returned to baseline values only after 6 weeks. Chronic SF exposures mimicking the fragmentation of sleep that characterizes patients with OSA elicits evidence of inflammation in brain regions and explicit memory impairments in mice. Similarly, SF is also associated with increased BBB permeability, the magnitude of which is closely associated with cognitive functional losses. Despite the normalization of sleep patterns, BBB functional recovery is a protracted process that merits further investigation.
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Affiliation(s)
- Clementine Puech
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, 400 N Keene St., Suite 010, Columbia, MO 65201, USA
| | - Mohammad Badran
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, 400 N Keene St., Suite 010, Columbia, MO 65201, USA
| | - Alexandra R Runion
- Undergraduate Student Research Program, University of Missouri, Columbia, MO 65201, USA
| | - Max B Barrow
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, 400 N Keene St., Suite 010, Columbia, MO 65201, USA
| | - Kylie Cataldo
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, 400 N Keene St., Suite 010, Columbia, MO 65201, USA
| | - David Gozal
- Child Health Research Institute, Department of Child Health, School of Medicine, University of Missouri, 400 N Keene St., Suite 010, Columbia, MO 65201, USA
- Department of Medical Pharmacology and Physiology, School of Medicine, University of Missouri, Columbia, MO 65201, USA
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