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Aneni EC, Sinusas AJ, Emokpae MC, Thorn SL, Yaggi HK, Miller EJ. Links Between Obstructive Sleep Apnea and Myocardial Blood Flow Changes Impacting Adverse Cardiovascular Disease-related Outcomes. Curr Cardiol Rep 2024:10.1007/s11886-024-02072-z. [PMID: 38806976 DOI: 10.1007/s11886-024-02072-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/13/2024] [Indexed: 05/30/2024]
Abstract
PURPOSE OF REVIEW Recent studies have demonstrated an association between obstructive sleep apnea (OSA) and abnormal myocardial blood flow (MBF), myocardial flow reserve (MFR), and coronary microvascular dysfunction (CMD). Here, we review the evidence and describe the potential underlying mechanisms linking OSA to abnormal MBF. Examining relevant studies, we assess the impact of OSA-specific therapy, such as continuous positive airway pressure (CPAP), on MBF. RECENT FINDINGS Recent studies suggest an association between moderate to severe OSA and abnormal MBF/MFR. OSA promotes functional and structural abnormalities of the coronary microcirculation. OSA also promotes the uncoupling of MBF to cardiac work. In a handful of studies with small sample sizes, CPAP therapy improved MBF/MFR. Moderate to severe OSA is associated with abnormal MFR, suggesting an association with CMD. Evidence suggests that CPAP therapy improves MBF. Future studies must determine the clinical impact of improved MBF with CPAP.
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Affiliation(s)
- Ehimen C Aneni
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06520-8017, USA.
| | - Albert J Sinusas
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06520-8017, USA
- Department of Bioengineering, Yale University, 17 Hillhouse Avenue, New Haven, CT, 06520-8292, USA
| | - Morgan C Emokpae
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06520-8017, USA
| | - Stephanie L Thorn
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06520-8017, USA
| | - H Klar Yaggi
- Section of Pulmonary, Critical Care, and Sleep Medicine, Yale University School of Medicine, 300 Cedar Street, New Haven, CT, 06520-8057, USA
| | - Edward J Miller
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06520-8017, USA
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Lyons OD. Sleep disorders in chronic kidney disease. Nat Rev Nephrol 2024:10.1038/s41581-024-00848-8. [PMID: 38789686 DOI: 10.1038/s41581-024-00848-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/02/2024] [Indexed: 05/26/2024]
Abstract
Sleep disorders are highly prevalent in chronic kidney disease (CKD) but are often under-recognized. Restless legs syndrome, which is common in CKD owing to issues with dopamine metabolism and is exacerbated by iron deficiency and uraemia, can lead to poor sleep quality and increased daytime fatigue. Insomnia is also prevalent in CKD, particularly in patients requiring dialysis, with increased sleep latency and sleep fragmentation being reported. The cause of insomnia in CKD is multifactorial - poor sleep habits and frequent napping during dialysis, uraemia, medications and mood disorders have all been suggested as potential contributing factors. Sleep apnoea and CKD are also now recognized as having a bi-directional relationship. Sleep apnoea is a risk factor for accelerated progression of CKD, and fluid overload, which is associated with kidney failure, can lead to both obstructive and central sleep apnoea. The presence of obstructive sleep apnoea in CKD can exacerbate the already heightened cardiovascular morbidity and mortality in these patients, as well as leading to daytime fatigue and reduced quality of life. Increased awareness, timely diagnosis and appropriate therapeutic interventions are essential to reduce the negative impact of sleep disorders in patients with kidney disease.
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Affiliation(s)
- Owen D Lyons
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada.
- Department of Medicine, Women's College Hospital, Toronto, Canada.
- Women's College Research Institute, Toronto, Ontario, Canada.
- Sleep Research Laboratory, Toronto Rehabilitation Institute, KITE-UHN, Toronto, Ontario, Canada.
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Lee S, Noh S, Lee WH. Association of obstructive sleep apnea and diurnal variation of cystatin C. BMC Nephrol 2024; 25:40. [PMID: 38287274 PMCID: PMC10823701 DOI: 10.1186/s12882-024-03472-7] [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: 08/17/2023] [Accepted: 01/18/2024] [Indexed: 01/31/2024] Open
Abstract
PURPOSE Obstructive sleep apnea is a known risk factor for the progression of chronic kidney disease. To find early signs of the progression in subjects with obstructive sleep apnea., we assessed the diurnal variation of kidney biomarkers. METHODS A prospective observational study was conducted at Kangwon National University Hospital, Chuncheon, South Korea. All participants underwent in-laboratory polysomnography and phlebotomy in the evening before the polysomnography and in the morning after the polysomnography. Kidney biomarkers, including serum creatinine, blood urea nitrogen, and serum cystatin C, were measured. Delta kidney biomarkers were calculated by subtracting the evening level of the biomarkers from the morning level. RESULTS Twenty-six of 50 participants had severe obstructive sleep apnea. Delta cystatin C was significantly correlated with apnea-hypopnea index, oxygen desaturation index, and total arousal index with coefficients of -0.314, -0.323, and -0.289, respectively. In participants without severe obstructive sleep apnea, the morning cystatin C level (0.84 ± 0.11 mg/L) was significantly higher than the evening cystatin C level (0.81 ± 0.11 mg/L) (P = 0.005). With severe obstructive sleep apnea, the cystatin C levels were not different between the morning (0.85 ± 0.11 mg/L) and the evening (0.85 ± 0.10 mg/L). CONCLUSIONS Cystatin C level was increased in the morning in participants without severe obstructive sleep apnea, but not in participants with severe obstructive sleep apnea.
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Affiliation(s)
- Seolhyun Lee
- Department of Medicine, Stanford University, Palo Alto, CA, USA
| | - Sungryong Noh
- Division of Pulmonary & Critical Care, Sleep Medicine, McCovern Medical School, University of Texas at Houston, Houston, TX, USA
| | - Woo Hyun Lee
- Department of Otolaryngology, Kangwon National University, Chuncheon, Korea.
- Departments of Otolaryngology, Kangwon National University Hospital, 156, Baengnyeong-Ro, Chuncheon-Si, Gangwon-Do, 24289, Republic of Korea.
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Chen Z, Shang Y, Ou Y, Shen C, Cao Y, Hu H, Yang R, Liu T, Liu Q, Song M, Zong D, Xiang X, Peng Y, Ouyang R. Obstructive Sleep Apnea Plasma-Derived Exosomes Mediate Cognitive Impairment Through Hippocampal Neuronal Cell Pyroptosis. Am J Geriatr Psychiatry 2024:S1064-7481(24)00017-4. [PMID: 38290937 DOI: 10.1016/j.jagp.2024.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 12/25/2023] [Accepted: 01/11/2024] [Indexed: 02/01/2024]
Abstract
OBJECTIVE Obstructive sleep apnea (OSA) is associated with impaired cognitive function. Exosomes are secreted by most cells and play a role in OSA-associated cognitive impairment (CI). The aim of this study was to investigate whether OSA plasma-derived exosomes cause CI through hippocampal neuronal cell pyroptosis, and to identify exosomal miRNAs in OSA plasma-derived. MATERIALS AND METHODS Plasma-derived exosomes were isolated from patients with severe OSA and healthy comparisons. Daytime sleepiness and cognitive function were assessed using the Epworth Sleepiness Scale (ESS) and the Beijing version of the Montreal Cognitive Assessment Scale (MoCA). Exosomes were coincubated with mouse hippocampal neurons (HT22) cells to evaluate the effect of exosomes on pyroptosis and inflammation of HT22 cells. Meanwhile, exosomes were injected into C57BL/6 male mice via caudal vein, and then morris water maze was used to evaluate the spatial learning and memory ability of the mice, so as to observe the effects of exosomes on the cognitive function of the mice. Western blot and qRT-PCR were used to detect the expressions of Gasdermin D (GSDMD) and Caspase-1 to evaluate the pyroptosis level. The expression of IL-1β, IL-6, IL-18 and TNF-α was detected by qRT-PCR to assess the level of inflammation. Correlations of GSDMD and Caspase-1 expression with clinical parameters were evaluated using Spearman's rank correlation analysis. In addition, plasma exosome miRNAs profile was identified, followed by Gene Ontology (GO) term and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. RESULTS Compared to healthy comparisons, body mass index (BMI), apnea-hypopnea index (AHI), oxygen desaturation index (ODI), and ESS scores were increased in patients with severe OSA, while lowest oxygen saturation during sleep (LSaO2), mean oxygen saturation during sleep (MSaO2) and MoCA scores were decreased. Compared to the PBS group (NC) and the healthy comparison plasma-derived exosomes (NC-EXOS), the levels of GSDMD and Caspase-1 and IL-1β, IL-6, IL-18 and TNF-α were increased significantly in the severe OSA plasma-derived exosomes (OSA-EXOS) coincubated with HT22 cells. Compared to the NC and NC-EXOS groups, the learning and memory ability of mice injected with OSA-EXOS was decreased, and the expression of GSDMD and Caspase-1 in hippocampus were significantly increased, along with the levels of IL-1β, IL-6, IL-18 and TNF-α. Spearman correlation analysis found that clinical AHI in HCs and severe OSA patients was positively correlated with GSDMD and Caspase-1 in HT22 cells from NC-EXOS and OSA-EXOS groups, while negatively correlated with clinical MoCA. At the same time, clinical MoCA in HCs and severe OSA patients was negatively correlated with GSDMD and Caspase-1 in HT22 cells from NC-EXOS and OSA-EXOS groups. A unique exosomal miRNAs profile was identified in OSA-EXOS group compared to the NC-EXOS group, in which 28 miRNAs were regulated and several KEGG and GO pathways were identified. CONCLUSIONS The results of this study show a hypothesis that plasma-derived exosomes from severe OSA patients promote pyroptosis and increased expression of inflammatory factors in vivo and in vitro, and lead to impaired cognitive function in mice, suggesting that OSA-EXOS can mediate CI through pyroptosis of hippocampal neurons. In addition, exosome cargo from OSA-EXOS showed a unique miRNAs profile compared to NC-EXOS, suggesting that plasma exosome associated miRNAs may reflect the differential profile of OSA related diseases, such as CI.
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Affiliation(s)
- Zhifeng Chen
- Department of Respiratory Medicine (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Research Unit of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China; Clinical Medical Research Center for Pulmonary (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Critical Care Medicine in Hunan Province, Changsha, Hunan, China; Diagnosis and Treatment Center of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China
| | - Yulin Shang
- Ophthalmology and Otorhinolaryngology (YS), Zigui County Traditional Chinese Medicine Hospital, Zigui, China
| | - Yanru Ou
- Department of Respiratory Medicine (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Research Unit of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China; Clinical Medical Research Center for Pulmonary (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Critical Care Medicine in Hunan Province, Changsha, Hunan, China; Diagnosis and Treatment Center of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China
| | - Chong Shen
- Department of Respiratory Medicine (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Research Unit of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China; Clinical Medical Research Center for Pulmonary (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Critical Care Medicine in Hunan Province, Changsha, Hunan, China; Diagnosis and Treatment Center of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China
| | - Ying Cao
- Department of Respiratory Medicine (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Research Unit of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China; Clinical Medical Research Center for Pulmonary (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Critical Care Medicine in Hunan Province, Changsha, Hunan, China; Diagnosis and Treatment Center of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China
| | - Hui Hu
- Department of Respiratory Medicine (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Research Unit of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China; Clinical Medical Research Center for Pulmonary (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Critical Care Medicine in Hunan Province, Changsha, Hunan, China; Diagnosis and Treatment Center of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China
| | - Ruibing Yang
- Department of Respiratory Medicine (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Research Unit of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China; Clinical Medical Research Center for Pulmonary (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Critical Care Medicine in Hunan Province, Changsha, Hunan, China; Diagnosis and Treatment Center of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China
| | - Ting Liu
- Department of Respiratory Medicine (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Research Unit of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China; Clinical Medical Research Center for Pulmonary (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Critical Care Medicine in Hunan Province, Changsha, Hunan, China; Diagnosis and Treatment Center of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China
| | - Qingqing Liu
- Department of Respiratory Medicine (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Research Unit of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China; Clinical Medical Research Center for Pulmonary (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Critical Care Medicine in Hunan Province, Changsha, Hunan, China; Diagnosis and Treatment Center of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China
| | - Min Song
- Department of Respiratory Medicine (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Research Unit of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China; Clinical Medical Research Center for Pulmonary (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Critical Care Medicine in Hunan Province, Changsha, Hunan, China; Diagnosis and Treatment Center of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China
| | - Dandan Zong
- Department of Respiratory Medicine (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Research Unit of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China; Clinical Medical Research Center for Pulmonary (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Critical Care Medicine in Hunan Province, Changsha, Hunan, China; Diagnosis and Treatment Center of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China
| | - Xudong Xiang
- Department of Emergency (XX), The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yating Peng
- Department of Respiratory Medicine (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Research Unit of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China; Clinical Medical Research Center for Pulmonary (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Critical Care Medicine in Hunan Province, Changsha, Hunan, China; Diagnosis and Treatment Center of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China.
| | - Ruoyun Ouyang
- Department of Respiratory Medicine (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Research Unit of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China; Clinical Medical Research Center for Pulmonary (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Critical Care Medicine in Hunan Province, Changsha, Hunan, China; Diagnosis and Treatment Center of Respiratory Disease (ZC, YO, CS, YC, HH, RY, TL, QL, MS, DZ, YP, RO), Central South University, Changsha, Hunan, China.
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Vasilkova T, Fiore VF, Clum A, Wong A, Kabir N, Costello E, Crasta M. Assessment of Autonomic Nervous System Activity Using Spectral Analysis of Heart Rate Variability After Continuous Positive Airway Pressure (CPAP) Therapy in Patients With Sleep Apnea. Cureus 2024; 16:e51735. [PMID: 38187017 PMCID: PMC10770822 DOI: 10.7759/cureus.51735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/05/2024] [Indexed: 01/09/2024] Open
Abstract
Heart rate variability (HRV) measurements have emerged as a valuable tool for understanding the functioning of the autonomic nervous system (ANS) and assessing the health outcomes of obstructive sleep apnea (OSA) in patients. Sleep and the ANS exert a mutual influence on each other. Sleep promotes relaxation and recovery of the ANS. Conversely, ANS activity plays a role in regulating the onset and maintenance of sleep. The impact of continuous positive airway pressure (CPAP) therapy on patient recovery levels was investigated by assessing the restoration of ANS activity using HRV indicators. The study included patients with OSA who had been on CPAP for at least eight weeks. The patients were divided into two groups, namely the experimental group (CPAP-compliant) and the control group (CPAP-non-compliant). The study included a total of 38 patients, with 20 in the CPAP-compliant group and 18 in the CPAP-non-compliant group. The HRV analysis included time- and frequency-domain measures. Data was collected in various resting conditions, including lying down, standing, regular breathing, and under physiological stress induced by deep breathing and the Valsalva maneuver. After CPAP treatment, there was an increase in the average values for SDNN for deep breathing and Valsalva maneuvers. The mean changes in SDNN for CPAP-non-compliant versus CPAP-compliant groups for normal breathing increased from 32.50±5.33 to 42.40±8.03, while the values for Valsalva increased from 20.16±2.47 to 25.45±3.03. Despite the observed variations in SDNN, there was no significant change in the average change in heart rate (∆ HR), except during the Valsalva maneuver. Post-CPAP values for the Valsalva ratio were significantly decreased in deep breathing. The E:I ratio for the CPAP-compliant group during normal breathing was 1.08±.16 compared to 1.55±.09; t (36) =-11.15, p <0.001 in the CPAP-non-compliant group. During deep breathing, the ratio was 1.36±.15 versus 1.59±.24; t (36) =-3.578, p <0.001. The high frequency (HF)nu mean values for deep breathing were 34.06±5.546 compared to 35.00±6.358; t (36) = -.485, p=.630. For the Valsalva maneuver, the values were 29.94±4.721 versus 26.95±6.621; t (36) =1.589, p=.060. The HF/low frequency (LF) ratio was found to be significant only in supine, standing, and normal breathing. The utilization of CPAP therapy was found to be effective in achieving and sustaining autonomic balance during tasks like standing and engaging in regular breathing patterns. During activities that involve intense physical effort, like the Valsalva maneuver, the HRV metrics did not indicate any significant balance between sympathetic and parasympathetic activity. However, using CPAP therapy for a prolonged period can be beneficial in consistently improving the sympathovagal balance in these patients.
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Affiliation(s)
- Taisa Vasilkova
- Medicine, Lake Erie College of Osteopathic Medicine, Elmira, USA
| | - Valerie F Fiore
- General Surgery, Lake Erie College of Osteopathic Medicine, Elmira, USA
| | - Alicia Clum
- Medicine, Lake Erie College of Osteopathic Medicine, Elmira, USA
| | - Angel Wong
- Medicine, Lake Erie College of Osteopathic Medicine, Elmira, USA
| | - Nawshin Kabir
- Medicine, Lake Erie College of Osteopathic Medicine, Elmira, USA
| | | | - Maxim Crasta
- Physiology, Lake Erie College of Osteopathic Medicine, Elmira, USA
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Fu Y, Lin J, Chen L, Chen X, Chen Q. Meta-analysis of the effects of CPAP therapy on estimated glomerular filtration rate in patients with obstructive sleep apnea. Sleep Breath 2023; 27:2155-2163. [PMID: 36940015 DOI: 10.1007/s11325-023-02811-6] [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: 01/09/2023] [Revised: 03/07/2023] [Accepted: 03/08/2023] [Indexed: 03/21/2023]
Abstract
PURPOSE Obstructive sleep apnea (OSA) is highly prevalent in patients with chronic kidney disease and may lead to a loss of kidney function. However, it remains unclear whether or not continuous positive airway pressure (CPAP) treatment improves the estimated glomerular filtration rate (eGFR) in patients with OSA. This meta-analysis was designed to investigate the effect of CPAP therapy on eGFR in patients with OSA. METHODS We searched the electronic databases Web of Science, Cochrane Library, PubMed, and Embase through June 1, 2022. Information about patients, CPAP duration, gender distribution, pre- and post-CPAP treatment eGFR, and age of patients were collected for further analysis. We applied the standardized mean difference (SMD) with a 95%confidence interval (CI) to analyze the pooled effects. Both Stata 12.0 software and Review Manager 5.2 software were employed for all statistical analyses. RESULTS A sample of 13 studies with 519 patients was included in the meta-analysis. There was no significant change of eGFR levels before and after CPAP usage for patients with OSA (SMD = - 0.05, 95%CI: - 0.30 to 0.19, Z = 0.43, p = 0.67). However, subgroup analysis revealed that the level of eGFR was obviously decreased after CPAP therapy in patients with OSA and CPAP use duration > 6 months (SMD = - 0.30, 95% CI = - 0.49 to - 0.12, z = 3.20, p = 0.001), and elderly patients (> 60 years) (SMD = - 0.32, 95% CI = - 0.52 to - 0.11, z = 3.02, p = 0.002). CONCLUSIONS Meta-analysis confirmed that OSA treatment with CPAP has no clinically significant effect on eGFR.
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Affiliation(s)
- Yuyu Fu
- Department of Anesthesiology, The Second Affiliated Hospital of Fujian Medical University, No.950 Donghai Street, Quanzhou, 362000, Fengze District, China
| | - Jiayu Lin
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Quanzhou, 362000, Fengze District, China
| | - Lijun Chen
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Quanzhou, 362000, Fengze District, China
| | - Xiaoyu Chen
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Quanzhou, 362000, Fengze District, China.
| | - Qingshi Chen
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Quanzhou, 362000, Fengze District, China.
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Habas E, Al Adab A, Arryes M, Alfitori G, Farfar K, Habas AM, Akbar RA, Rayani A, Habas E, Elzouki A. Anemia and Hypoxia Impact on Chronic Kidney Disease Onset and Progression: Review and Updates. Cureus 2023; 15:e46737. [PMID: 38022248 PMCID: PMC10631488 DOI: 10.7759/cureus.46737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2023] [Indexed: 12/01/2023] Open
Abstract
Chronic kidney disease (CKD) is caused by hypoxia in the renal tissue, leading to inflammation and increased migration of pathogenic cells. Studies showed that leukocytes directly sense hypoxia and respond by initiating gene transcription, encoding the 2-integrin adhesion molecules. Moreover, other mechanisms participate in hypoxia, including anemia. CKD-associated anemia is common, which induces and worsens hypoxia, contributing to CKD progression. Anemia correction can slow CKD progression, but it should be cautiously approached. In this comprehensive review, the underlying pathophysiology mechanisms and the impact of renal tissue hypoxia and anemia in CKD onset and progression will be reviewed and discussed in detail. Searching for the latest updates in PubMed Central, Medline, PubMed database, Google Scholar, and Google search engines were conducted for original studies, including cross-sectional studies, cohort studies, clinical trials, and review articles using different keywords, phrases, and texts such as "CKD progression, anemia in CKD, CKD, anemia effect on CKD progression, anemia effect on CKD progression, and hypoxia and CKD progression". Kidney tissue hypoxia and anemia have an impact on CKD onset and progression. Hypoxia causes nephron cell death, enhancing fibrosis by increasing interstitium protein deposition, inflammatory cell activation, and apoptosis. Severe anemia correction improves life quality and may delay CKD progression. Detection and avoidance of the risk factors of hypoxia prevent recurrent acute kidney injury (AKI) and reduce the CKD rate. A better understanding of kidney hypoxia would prevent AKI and CKD and lead to new therapeutic strategies.
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Affiliation(s)
| | - Aisha Al Adab
- Internal Medicine, Hamad General Hospital, Doha, QAT
| | - Mehdi Arryes
- Internal Medicine, Hamad General Hospital, Doha, QAT
| | | | | | - Ala M Habas
- Internal Medicine, Tripoli University, Tripoli, LBY
| | - Raza A Akbar
- Internal Medicine, Hamad General Hospital, Doha, QAT
| | - Amnna Rayani
- Hemat-oncology Department, Pediatric Tripoli Hospital, Tripoli University, Tripoli, LBY
| | - Eshrak Habas
- Internal Medicine, Tripoli University, Tripoli, LBY
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8
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Kious KW, Savage KA, Twohey SCE, Highum AF, Philipose A, Díaz HS, Del Rio R, Lang JA, Clayton SC, Marcus NJ. Chronic intermittent hypoxia promotes glomerular hyperfiltration and potentiates hypoxia-evoked decreases in renal perfusion and PO 2. Front Physiol 2023; 14:1235289. [PMID: 37485067 PMCID: PMC10358516 DOI: 10.3389/fphys.2023.1235289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 06/27/2023] [Indexed: 07/25/2023] Open
Abstract
Introduction: Sleep apnea (SA) is highly prevalent in patients with chronic kidney disease and may contribute to the development and/or progression of this condition. Previous studies suggest that dysregulation of renal hemodynamics and oxygen flux may play a key role in this process. The present study sought to determine how chronic intermittent hypoxia (CIH) associated with SA affects regulation of renal artery blood flow (RBF), renal microcirculatory perfusion (RP), glomerular filtration rate (GFR), and cortical and medullary tissue PO2 as well as expression of genes that could contribute to renal injury. We hypothesized that normoxic RBF and tissue PO2 would be reduced after CIH, but that GFR would be increased relative to baseline, and that RBF, RP, and tissue PO2 would be decreased to a greater extent in CIH vs. sham during exposure to intermittent asphyxia (IA, FiO2 0.10/FiCO2 0.03). Additionally, we hypothesized that gene programs promoting oxidative stress and fibrosis would be activated by CIH in renal tissue. Methods: All physiological variables were measured at baseline (FiO2 0.21) and during exposure to 10 episodes of IA (excluding GFR). Results: GFR was higher in CIH-conditioned vs. sham (p < 0.05), whereas normoxic RBF and renal tissue PO2 were significantly lower in CIH vs. sham (p < 0.05). Reductions in RBF, RP, and renal tissue PO2 during IA occurred in both groups but to a greater extent in CIH (p < 0.05). Pro-oxidative and pro-fibrotic gene programs were activated in renal tissue from CIH but not sham. Conclusion: CIH adversely affects renal hemodynamic regulation and oxygen flux during both normoxia and IA and results in changes in renal tissue gene expression.
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Affiliation(s)
- Kiefer W. Kious
- Department of Physiology and Pharmacology, Des Moines University Medicine and Health Sciences, Des Moines, IA, United States
| | - Kalie A. Savage
- Department of Physiology and Pharmacology, Des Moines University Medicine and Health Sciences, Des Moines, IA, United States
| | - Stephanie C. E. Twohey
- Department of Physiology and Pharmacology, Des Moines University Medicine and Health Sciences, Des Moines, IA, United States
- Department of Biology, Simpson College, Indianola, IA, United States
| | - Aubrey F. Highum
- Department of Physiology and Pharmacology, Des Moines University Medicine and Health Sciences, Des Moines, IA, United States
| | - Andrew Philipose
- Department of Physiology and Pharmacology, Des Moines University Medicine and Health Sciences, Des Moines, IA, United States
| | - Hugo S. Díaz
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile
- Facultad de Ciencias de la Salud, Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Santiago, Chile
| | - Rodrigo Del Rio
- Laboratory of Cardiorespiratory Control, Department of Physiology, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas, Chile
| | - James A. Lang
- Department of Kinesiology, Iowa State University, Ames, IA, United States
| | - Sarah C. Clayton
- Department of Physiology and Pharmacology, Des Moines University Medicine and Health Sciences, Des Moines, IA, United States
| | - Noah J. Marcus
- Department of Physiology and Pharmacology, Des Moines University Medicine and Health Sciences, Des Moines, IA, United States
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9
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Lun H, Liu R, Hu Q, Liu Y, Wei L, Liu X, Wu D, Zhu S. Contrast Enhanced Ultrasonography of Kidney in Chronic Intermittent Hypoxia Rat Model. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2023; 42:1319-1325. [PMID: 36478449 DOI: 10.1002/jum.16147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/12/2022] [Accepted: 11/23/2022] [Indexed: 05/18/2023]
Abstract
OBJECTIVES The objective of our study was to assess the ability of contrast-enhanced ultrasound (CEUS) in evaluating renal microperfusion in an animal model. METHODS Twenty Sprague-Dawley rats were subdivided into two groups: the normal and chronic intermittent hypoxia (CIH) groups. In the CIH model, 10 Sprague-Dawley rats were exposed to CIH for 8 weeks to mimic obstructive sleep apnea (OSA). The CEUS parameters of the renal cortex and medulla were obtained and compared between groups. The pathological changes of the kidney tissues were examined by histological staining such as hematoxylin and eosin (H&E) and Masson's trichrome. RESULTS CIH caused morphological damage to kidneys. In the cortex, the peak intensity (PI) (P = .009) was significantly lower and time to peak (Ttop) (P = .019) was significantly prolonged in the CIH group compared with the controls. The area under ascending curve (WiAUC) in the medulla and cortex were both significantly lower in the CIH group than those in the control group (P both <.05). CEUS parameters (including PI and WiAUC of the cortex and WiAUC of the medulla) were negatively correlated with serum creatinine (P all <.05). In the medulla, the area under descending curve (WoAUC) was positively correlated with serum creatinine (P = .027), PI was negatively correlated with uric acid (P = .034). CONCLUSION CEUS parameters (including Ttop, PI, WoAUC, and WiAUC) reflect renal microvascular changes in CIH. CEUS could be a safe and accurate imaging method to assess renal microvascular damage in CIH rats.
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Affiliation(s)
- Haimei Lun
- Department of Medical Ultrasound, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
- Department of Ultrasound, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Ruochuan Liu
- Department of Medical Ultrasound, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Qiao Hu
- Department of Ultrasound, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Yaoli Liu
- Department of Medical Ultrasound, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Lisi Wei
- Department of Ultrasound, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Xia Liu
- Department of Pathology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Dan Wu
- Department of Pediatrics, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Shangyong Zhu
- Department of Medical Ultrasound, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
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10
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Zamarrón E, Jaureguizar A, García-Sánchez A, Díaz-Cambriles T, Alonso-Fernández A, Lores V, Mediano O, Troncoso-Acevedo F, Cabello-Pelegrín S, Morales-Ruíz E, Ramírez-Prieto MT, Valiente-Díaz MI, Gómez-García T, Casitas R, Martínez-Cerón E, Galera R, Cubillos-Zapata C, García-Río F. Continuous Positive Airway Pressure Effect on Albuminuria Progression in Patients with Obstructive Sleep Apnea and Diabetic Kidney Disease: A Randomized Clinical Trial. Am J Respir Crit Care Med 2023; 207:757-767. [PMID: 36342964 DOI: 10.1164/rccm.202206-1091oc] [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] [Indexed: 11/09/2022] Open
Abstract
Rationale: Obstructive sleep apnea (OSA) is associated with impaired glycemic control and a higher risk of vascular complications, such as diabetic kidney disease (DKD). However, the effect of apnea-hypopnea suppression on DKD progression is unclear. Objectives: To assess the effect of continuous positive airway pressure (CPAP) on the urinary albumin-to-creatinine ratio (UACR) in patients with DKD and OSA. Methods: In a 52-week, multicentric, open-label, parallel, and randomized clinical trial, 185 patients with OSA and DKD were randomized to CPAP and usual care (n = 93) or usual care alone (n = 92). Measurements and Main Results: UACR, estimated glomerular filtration rate, serum concentrations of creatinine and glycated hemoglobin, insulin resistance, lipid concentrations, sleepiness, and quality of life. A 52-week change in UACR from baseline did not differ significantly between the CPAP group and the usual-care group. However, in per-protocol analyses that included 125 participants who met prespecified criteria for adherence, CPAP treatment was associated with a great reduction in UACR (mean difference, -10.56% [95% confidence interval, -19.06 to -2.06]; P = 0.015). CPAP effect on UACR was higher in nonsleepy patients with more severe OSA, worse renal function, and a more recent diagnosis of DKD. CPAP treatment also improved glycemic control and insulin resistance, as well as sleepiness and health-related quality of life. Conclusions: In patients with OSA and DKD, the prescription of CPAP did not result in a statistically significant reduction in albuminuria. However, good adherence to CPAP treatment in addition to usual care may result in long-term albuminuria reduction compared with usual care alone. Clinical trial registered with www.clinicaltrials.gov (NCT02816762).
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Affiliation(s)
- Ester Zamarrón
- Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
| | - Ana Jaureguizar
- Servicio de Neumología, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | | | - Trinidad Díaz-Cambriles
- Servicio de Neumología and
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Alberto Alonso-Fernández
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Servicio de Neumología and
- Institut d'Investigació Sanitària Illes Balears (IdISBa), Palma de Mallorca, Spain
| | - Vanesa Lores
- Servicio de Neumología, Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Madrid, Spain
| | - Olga Mediano
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Servicio de Neumología, Hospital Universitario de Guadalajara, Guadalajara, Spain
- Universidad de Alcalá, Madrid, Spain
| | - Fernanda Troncoso-Acevedo
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Servicio de Neumología, Fundación Jiménez Díaz, Madrid, Spain; and
| | - Sheila Cabello-Pelegrín
- Servicio de Nefrología, Hospital Universitario Son Espases, Palma de Mallorca, Spain
- Institut d'Investigació Sanitària Illes Balears (IdISBa), Palma de Mallorca, Spain
| | | | - María T Ramírez-Prieto
- Servicio de Neumología, Hospital Universitario Infanta Sofía, San Sebastián de los Reyes, Madrid, Spain
| | | | - Teresa Gómez-García
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Servicio de Neumología, Fundación Jiménez Díaz, Madrid, Spain; and
| | - Raquel Casitas
- Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Elisabet Martínez-Cerón
- Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Raúl Galera
- Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Carolina Cubillos-Zapata
- Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Francisco García-Río
- Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
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11
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Gembillo G, Calimeri S, Tranchida V, Silipigni S, Vella D, Ferrara D, Spinella C, Santoro D, Visconti L. Lung Dysfunction and Chronic Kidney Disease: A Complex Network of Multiple Interactions. J Pers Med 2023; 13:jpm13020286. [PMID: 36836520 PMCID: PMC9966880 DOI: 10.3390/jpm13020286] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/29/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023] Open
Abstract
Chronic kidney disease (CKD) is a progressive disease that affects > 10% of the total population worldwide or >800 million people. CKD poses a particularly heavy burden in low- and middle-income countries, which are least able to cope with its consequences. It has become one of the leading causes of death worldwide and is one of the few non-communicable diseases where the number of related deaths has increased over the last two decades. The high number of people affected, and the significant negative impact of CKD should be a reason to increase efforts to improve prevention and treatment. The interaction of lung and kidney leads to highly complex and difficult clinical scenarios. CKD significantly affects the physiology of the lung by altering fluid homeostasis, acid-base balance and vascular tone. In the lung, haemodynamic disturbances lead to the development of alterations in ventilatory control, pulmonary congestion, capillary stress failure and pulmonary vascular disease. In the kidney, haemodynamic disturbances lead to sodium and water retention and the deterioration of renal function. In this article, we would like to draw attention to the importance of harmonising the definitions of clinical events in pneumology and renal medicine. We would also like to highlight the need for pulmonary function tests in routine clinical practise for the management of patients with CKD, in order to find new concepts for pathophysiological based disease-specific management strategies.
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Affiliation(s)
- Guido Gembillo
- Unit of Nephrology and Dialysis, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
- Department of Biomedical and Dental Sciences and Morpho-Functional Imaging, University of Messina, 98125 Messina, Italy
- Correspondence: ; Tel.: +39-00902212265
| | - Sebastiano Calimeri
- Unit of Nephrology and Dialysis, Ospedali Riuniti Villa Sofia Cervello, University of Palermo, 90146 Palermo, Italy
| | - Valeria Tranchida
- Unit of Nephrology and Dialysis, Ospedali Riuniti Villa Sofia Cervello, University of Palermo, 90146 Palermo, Italy
| | - Salvatore Silipigni
- Department of Biomedical Sciences and Morphologic and Functional Imaging, Policlinico “G. Martino’’, University of Messina, Via Consolare Valeria 1, 98100 Messina, Italy
| | - Davide Vella
- Unit of Nephrology and Dialysis, Ospedali Riuniti Villa Sofia Cervello, University of Palermo, 90146 Palermo, Italy
| | - Domenico Ferrara
- Unit of Nephrology and Dialysis, Ospedali Riuniti Villa Sofia Cervello, University of Palermo, 90146 Palermo, Italy
| | - Claudia Spinella
- Unit of Nephrology and Dialysis, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
| | - Domenico Santoro
- Unit of Nephrology and Dialysis, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
| | - Luca Visconti
- Unit of Nephrology and Dialysis, Ospedali Riuniti Villa Sofia Cervello, University of Palermo, 90146 Palermo, Italy
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12
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Loh HH, Lim QH, Chai CS, Goh SL, Lim LL, Yee A, Sukor N. Influence and implications of the renin-angiotensin-aldosterone system in obstructive sleep apnea: An updated systematic review and meta-analysis. J Sleep Res 2023; 32:e13726. [PMID: 36104933 PMCID: PMC10078316 DOI: 10.1111/jsr.13726] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/30/2022] [Accepted: 08/22/2022] [Indexed: 02/03/2023]
Abstract
Obstructive sleep apnea is a chronic, sleep-related breathing disorder, which is an independent risk factor for cardiovascular disease. The renin-angiotensin-aldosterone system regulates salt and water homeostasis, blood pressure, and cardiovascular remodelling. Elevated aldosterone levels are associated with excess morbidity and mortality. We aimed to analyse the influence and implications of renin-angiotensin-aldosterone system derangement in individuals with and without obstructive sleep apnea. We pooled data from 20 relevant studies involving 2828 participants (1554 with obstructive sleep apnea, 1274 without obstructive sleep apnea). The study outcomes were the levels of renin-angiotensin-aldosterone system hormones, blood pressure and heart rate. Patients with obstructive sleep apnea had higher levels of plasma renin activity (pooled wmd+ 0.25 [95% confidence interval 0.04-0.46], p = 0.0219), plasma aldosterone (pooled wmd+ 30.79 [95% confidence interval 1.05-60.53], p = 0.0424), angiotensin II (pooled wmd+ 5.19 [95% confidence interval 3.11-7.27], p < 0.001), systolic (pooled wmd+ 5.87 [95% confidence interval 1.42-10.32], p = 0.0098) and diastolic (pooled wmd+ 3.40 [95% confidence interval 0.86-5.94], p = 0.0086) blood pressure, and heart rate (pooled wmd+ 3.83 [95% confidence interval 1.57-6.01], p = 0.0009) compared with those without obstructive sleep apnea. The elevation remained significant (except for renin levels) when studies involving patients with resistant hypertension were removed. Sub-group analysis demonstrated that levels of angiotensin II were significantly higher only among the Asian population with obstructive sleep apnea compared with those without obstructive sleep apnea. Body mass index accounted for less than 10% of the between-study variance in elevation of the renin-angiotensin-aldosterone system parameters. Patients with obstructive sleep apnea have higher levels of renin-angiotensin-aldosterone system hormones, blood pressure and heart rate compared with those without obstructive sleep apnea, which remains significant even among patients without resistant hypertension.
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Affiliation(s)
- Huai Heng Loh
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Center, Kuala Lumpur, Malaysia.,Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, Kota Samarahan, Malaysia
| | - Quan Hziung Lim
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Chee Shee Chai
- Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, Kota Samarahan, Malaysia
| | - Siew Li Goh
- Sports and Exercise Medicine Research and Education Group, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Lee-Ling Lim
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.,Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Anne Yee
- Department of Psychological Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Norlela Sukor
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Center, Kuala Lumpur, Malaysia
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13
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Beaudin AE, Raneri JK, Ahmed S, Hirsch Allen AJ, Nocon A, Gomes T, Gakwaya S, Sériès F, Kimoff JR, Skomro R, Ayas N, Hanly PJ. Association of insomnia and short sleep duration, alone or with comorbid obstructive sleep apnea, and the risk of chronic kidney disease. Sleep 2022; 45:6571834. [PMID: 35445715 PMCID: PMC9272259 DOI: 10.1093/sleep/zsac088] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/07/2022] [Indexed: 11/14/2022] Open
Abstract
STUDY OBJECTIVES Obstructive sleep apnea (OSA), sleep fragmentation, and short sleep duration (SD) have been associated with chronic kidney disease (CKD). However, these potential mechanisms for CKD have not been compared in the same cohort. This study investigated the independent and combined impact of OSA and insomnia with short sleep duration on the risk of CKD progression in a sleep clinic population. METHODS In a cross-sectional study design, adults with suspected OSA completed an overnight sleep study and a questionnaire that included the Insomnia Severity Index (ISI) and Pittsburgh Sleep Quality Index (PSQI). They also provided blood and urine samples for measurement of the glomerular filtration rate and urine albumin:creatinine ratio, from which the risk of CKD progression was determined. RESULTS Participants (n = 732, 41% female, 55 ± 13 years) were categorized into four groups: no/mild OSA without insomnia (NM-OSA, n = 203), insomnia with SD without OSA (Insomnia-SD, n = 104), moderate-to-severe OSA without insomnia (MS-OSA, n = 242), and comorbid insomnia and OSA with SD (COMISA-SD, n = 183). After stratification, 12.8% of NM-OSA, 15.4% of Insomnia-SD, 28.9% of MS-OSA, and 31.7% of the COMISA-SD participants had an increased risk of CKD progression. Compared to NM-OSA, the odds ratio (OR) for an increased risk of CKD progression was not increased in Insomnia-SD (OR 0.95, confidence interval [CI]: 0.45-1.99) and was increased to the same degree in MS-OSA (OR 2.79, CI: 1.60-4.85) and COMISA-SD (OR 3.04, CI: 1.69-5.47). However, the ORs were similar between the MS-OSA and COMISA-SD groups across all statistical models (p ≥ .883). CONCLUSIONS In a sleep clinic population, insomnia with short sleep duration does not increase the risk of CKD progression; nor does it further increase the risk of CKD progression associated with moderate-to-severe OSA.
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Affiliation(s)
- Andrew E Beaudin
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Jill K Raneri
- Sleep Centre, Foothills Medical Centre, Calgary, AB, Canada
| | - Sofia Ahmed
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - A J Hirsch Allen
- Department of Medicine, Respiratory and Critical Care Divisions, University of British Columbia, Vancouver, BC, Canada
| | - Andrhea Nocon
- Division of Respirology, Critical Care and Sleep Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Teresa Gomes
- Respiratory Division and Sleep Laboratory, McGill University Health Centre, Montreal, QC, Canada
| | - Simon Gakwaya
- Unité de recherche en pneumologie, Centre de recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, QC, Canada
| | - Frédéric Sériès
- Unité de recherche en pneumologie, Centre de recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, QC, Canada
| | - John R Kimoff
- Respiratory Division and Sleep Laboratory, McGill University Health Centre, Montreal, QC, Canada
| | - Robert Skomro
- Division of Respirology, Critical Care and Sleep Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Najib Ayas
- Department of Medicine, Respiratory and Critical Care Divisions, University of British Columbia, Vancouver, BC, Canada
| | - Patrick J Hanly
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Sleep Centre, Foothills Medical Centre, Calgary, AB, Canada.,Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
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14
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Associations between Sleep Quality and Heart Rate Variability: Implications for a Biological Model of Stress Detection Using Wearable Technology. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19095770. [PMID: 35565165 PMCID: PMC9103972 DOI: 10.3390/ijerph19095770] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 05/05/2022] [Accepted: 05/06/2022] [Indexed: 11/17/2022]
Abstract
INTRODUCTION The autonomic nervous system plays a vital role in the modulation of many vital bodily functions, one of which is sleep and wakefulness. Many studies have investigated the link between autonomic dysfunction and sleep cycles; however, few studies have investigated the links between short-term sleep health, as determined by the Pittsburgh Quality of Sleep Index (PSQI), such as subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbances, use of sleeping medication, and daytime dysfunction, and autonomic functioning in healthy individuals. AIM In this cross-sectional study, the aim was to investigate the links between short-term sleep quality and duration, and heart rate variability in 60 healthy individuals, in order to provide useful information about the effects of stress and sleep on heart rate variability (HRV) indices, which in turn could be integrated into biological models for wearable devices. METHODS Sleep parameters were collected from participants on commencement of the study, and HRV was derived using an electrocardiogram (ECG) during a resting and stress task (Trier Stress Test). RESULT Low-frequency to high-frequency (LF:HF) ratio was significantly higher during the stress task than during the baseline resting phase, and very-low-frequency and high-frequency HRV were inversely related to impaired sleep during stress tasks. CONCLUSION Given the ubiquitous nature of wearable technologies for monitoring health states, in particular HRV, it is important to consider the impacts of sleep states when using these technologies to interpret data. Very-low-frequency HRV during the stress task was found to be inversely related to three negative sleep indices: sleep quality, daytime dysfunction, and global sleep score.
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15
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Gavrilin MA, Porter K, Samouilov A, Khayat RN. Pathways of Microcirculatory Endothelial Dysfunction in Obstructive Sleep Apnea: A Comprehensive Ex Vivo Evaluation in Human Tissue. Am J Hypertens 2022; 35:347-355. [PMID: 34694354 PMCID: PMC8976176 DOI: 10.1093/ajh/hpab169] [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] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/18/2021] [Accepted: 10/20/2021] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND The mechanism and markers of cardiovascular disease (CVD) in obstructive sleep apnea (OSA) remain unknown. The microcirculation is the site of early changes in OSA patients who are free of CVD risk. METHODS Patients with newly diagnosed moderate to severe OSA (n = 7) were studied before and 12 weeks after intensive treatment with continuous positive airway pressure (CPAP), along with weight and age matched controls (n = 7). Microcirculatory vessels were isolated from gluteal biopsies and changes in critical functional genes were measured. RESULTS The following genes changed after 12 weeks of intensive CPAP therapy in the microcirculatory vessels: angiotensin receptor type 1 (AGTR-1) (11.6 (3.4) to 6 (0.8); P = 0.019); NADPH oxidase (NOX4) (0.85 (0.02) to 0.79 (0.11); P = 0.016); and dimethylarginine dimethylaminohydrolase (DDAH 1) (1 (0.31) to 0.55 (0.1); P = 0.028). Despite decreased nitric oxide (NO) availability as measured indirectly through brachial artery flow-mediated dilation, endothelial NO synthase (NOS3) did not change with CPAP. Other disease markers of OSA that changed with treatment in the microcirculation were endothelin, hypoxia inducible factor 1a, nuclear factor kappa B, interleukin-8, and interleukin-6. CONCLUSIONS In this ex vivo evaluation of the microcirculation of patients with OSA and no CVD risk, several pathways of CVD were activated supporting that OSA independently induces microcirculatory endothelial dysfunction and serving as disease-specific markers for future pharmacological targeting of OSA-related CVD risk. The findings support the role of renin-angiotensin activation and endothelial oxidative stress in the decreased microcirculatory NO availability in OSA.
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Affiliation(s)
| | - Kyle Porter
- The Center for Biostatistics, The Ohio State University, Columbus, Ohio, USA
| | - Alexandre Samouilov
- Department of Medicine, The Division of Cardiovascular Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Rami N Khayat
- The Sleep Heart Program, The Ohio State University, Columbus, Ohio, USA
- The Division of Pulmonary and Critical Medicine and the UCI Sleep Disorders Center, Departments of Medicine and Psychiatry, the University of California-Irvine, Irvine, California, USA
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16
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Beaudin AE, Raneri JK, Ahmed SB, Hirsch Allen AJM, Nocon A, Gomes T, Gakwaya S, Series F, Kimoff J, Skomro RP, Ayas NT, Hanly PJ. Risk of chronic kidney disease in patients with obstructive sleep apnea. Sleep 2021; 45:6425062. [PMID: 34757390 DOI: 10.1093/sleep/zsab267] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 10/19/2021] [Indexed: 11/14/2022] Open
Abstract
STUDY OBJECTIVES Chronic kidney disease (CKD) is a global health concern and a major risk factor for cardiovascular morbidity and mortality. Obstructive sleep apnea (OSA) may exacerbate this risk by contributing to the development of CKD. This study investigated the prevalence and patient awareness of the risk of CKD progression in individuals with OSA. METHODS Adults referred to five Canadian academic sleep centers for suspected OSA completed a questionnaire, a home sleep apnea test or in-lab polysomnography and provided blood and urine samples for measurement of estimated glomerular filtration rate (eGFR) and the albumin:creatinine ratio (ACR), respectively. The risk of CKD progression was estimated from a heat map incorporating both eGFR and ACR. RESULTS 1295 adults (42% female, 54±13y) were categorized based on the oxygen desaturation index (4% desaturation): <15 (no/mild OSA, n=552), 15-30 (moderate OSA, n=322), and >30 (severe OSA, n=421). After stratification, 13.6% of the no/mild OSA group, 28.9% of the moderate OSA group, and 30.9% of the severe OSA group had a moderate-to-very high risk of CKD progression (p<0.001), which was defined as an eGFR < 60 mL/min/1.73m2, an ACR ≥3 mg/mmol, or both. Compared to those with no/mild OSA, the odds ratio for moderate-to-very high risk of CKD progression was 2.63 (95% CI: 1.79-3.85) for moderate OSA and 2.96 (2.04-4.30) for severe OSA after adjustment for CKD risk factors. Among patients at increased risk of CKD progression, 73% were unaware they had abnormal kidney function. CONCLUSION Patients with moderate and severe OSA have an increased risk of CKD progression independent of other CKD risk factors; most patients are unaware of this increased risk.
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Affiliation(s)
- Andrew E Beaudin
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Jill K Raneri
- Sleep Centre, Foothills Medical Centre, Calgary, AB, Canada
| | - Sofia B Ahmed
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, , Canada.,Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, , Canada
| | - A J Marcus Hirsch Allen
- Department of Medicine, Respiratory and Critical Care Division, University of British Columbia, Vancouver, BC, Canada
| | - Andrhea Nocon
- Division of Respirology, Critical Care and Sleep Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Teresa Gomes
- Respiratory Division and Sleep Laboratory, McGill University Health Centre, Montreal, QC, Canada
| | - Simon Gakwaya
- Unité de recherche en pneumologie, Centre de recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, QC, Canada
| | - Fréderic Series
- Unité de recherche en pneumologie, Centre de recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, QC, Canada
| | - John Kimoff
- Respiratory Division and Sleep Laboratory, McGill University Health Centre, Montreal, QC, Canada
| | - Robert P Skomro
- Division of Respirology, Critical Care and Sleep Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Najib T Ayas
- Department of Medicine, Respiratory and Critical Care Division, University of British Columbia, Vancouver, BC, Canada
| | - Patrick J Hanly
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Sleep Centre, Foothills Medical Centre, Calgary, AB, Canada.,Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, , Canada
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17
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Li MM, Zheng YL, Wang WD, Lin S, Lin HL. Neuropeptide Y: An Update on the Mechanism Underlying Chronic Intermittent Hypoxia-Induced Endothelial Dysfunction. Front Physiol 2021; 12:712281. [PMID: 34512386 PMCID: PMC8430344 DOI: 10.3389/fphys.2021.712281] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 08/02/2021] [Indexed: 12/17/2022] Open
Abstract
Endothelial dysfunction (ED) is a core pathophysiological process. The abnormal response of vascular endothelial (VE) cells to risk factors can lead to systemic consequences. ED caused by intermittent hypoxia (IH) has also been recognized. Neuropeptide Y (NPY) is an important peripheral neurotransmitter that binds to different receptors on endothelial cells, thereby causing ED. Additionally, hypoxia can induce the release of peripheral NPY; however, the involvement of NPY and its receptor in IH-induced ED has not been determined. This review explains the definition of chronic IH and VE function, including the relationship between ED and chronic IH-related vascular diseases. The results showed that that the effect of IH on VE injury is mediated by the VE-barrier structure and endothelial cell dysfunction. These findings offer new ideas for the prevention and treatment of obstructive sleep apnea syndrome and its complications.
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Affiliation(s)
- Mei-Mei Li
- Department of Cardiology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Yan-Li Zheng
- Department of Cardiology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Wan-da Wang
- Department of Cardiology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Shu Lin
- Department of Cardiology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China.,Centre of Neurological and Metabolic Research, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China.,Diabetes and Metabolism Division, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Hui-Li Lin
- Department of Cardiology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
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18
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Voulgaris A, Bonsignore MR, Schiza S, Marrone O, Steiropoulos P. Is kidney a new organ target in patients with obstructive sleep apnea? Research priorities in a rapidly evolving field. Sleep Med 2021; 86:56-67. [PMID: 34474225 DOI: 10.1016/j.sleep.2021.08.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 07/15/2021] [Accepted: 08/05/2021] [Indexed: 11/28/2022]
Abstract
The bidirectional relationship between sleep disordered breathing and chronic kidney disease (CKD) has recently gained a lot of interest. Several lines of evidence suggest the high prevalence of coexistent obstructive sleep apnea (OSA) in patients with CKD and end-stage renal disease (ESRD). In addition, OSA seems to result in loss of kidney function in some patients, especially in those with cardio-metabolic comorbidities. Treatment of CKD/ESRD and OSA can alter the natural history of each other; still better phenotyping with selection of appropriate treatment approaches is urgently needed. The aim of this narrative review is to provide an update of recent studies on epidemiological associations, pathophysiological interactions, and management of patients with OSA and CKD or ESRD.
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Affiliation(s)
- Athanasios Voulgaris
- MSc Programme in Sleep Medicine, Medical School, Democritus University of Thrace, Alexandroupolis, Greece; Department of Respiratory Medicine, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Maria R Bonsignore
- Institute of Biomedicine and Molecular Immunology, CNR, Palermo, Italy; Sleep Disordered Breathing and Chronic Respiratory Failure Clinic, PROMISE Department, University of Palermo, and IRIB, National Research Council (CNR), Palermo, Italy
| | - Sophia Schiza
- Sleep Disorders Center, Department of Respiratory Medicine, Medical School, University of Crete, Heraklion, Greece
| | - Oreste Marrone
- Institute of Biomedicine and Molecular Immunology, CNR, Palermo, Italy
| | - Paschalis Steiropoulos
- MSc Programme in Sleep Medicine, Medical School, Democritus University of Thrace, Alexandroupolis, Greece; Department of Respiratory Medicine, Medical School, Democritus University of Thrace, Alexandroupolis, Greece.
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19
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Association of Sleep Disordered Breathing and Blood Pressure with Albuminuria: The Nagahama Study. Ann Am Thorac Soc 2021; 19:451-461. [PMID: 34347565 DOI: 10.1513/annalsats.202105-528oc] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
RATIONALE Although sleep disordered breathing (SDB) may increase urinary albumin excretion (UAE) by raising nocturnal blood pressure (BP) in addition to diurnal BP, the correlation has not been investigated in a general population. OBJECTIVES To evaluate the relationships among UAE, SDB and BP during sleep in a large population cohort. METHODS Among 9,850 community residents, UAE was assessed by the urinary albumin creatinine ratio (UACR) in spot urine. Sleep duration and SDB were evaluated by a wearable actigraph and pulse oximeter, respectively. We calculated the actigraphy-modified 3% oxygen desaturation index (Acti-3%ODI) by correcting the time measured by pulse oximetry according to sleep duration obtained by actigraphy. Further, participants were instructed to measure morning and sleep BP at home by a timer-equipped oscillometric device. RESULTS Measurements of sleep parameters, UAE and office BP were completed in 6,568 participants. The multivariate analysis that included confounders showed a significant association of Acti-3%ODI with UACR. (β=0.06, p<0.001) Further, a positive interaction between office systolic BP (SBP) and Acti-3%ODI for UACR was found. (β=0.06, p<0.001) Among the 6,568 persons enrolled in the analysis, 5,313 completed measurements of BP at home. In this cohort, the association of Acti-3%ODI with UACR remained significant (β=0.06, p<0.001) even after morning and sleep SBP were included in the analysis. Further, mediation analysis revealed that 28.3% (95% confidence interval: 14.9-41.7%, p<0.001) of the association of Acti-3%ODI with UACR was explained by the mediation of morning and sleep SBP metrics. CONCLUSIONS SDB and office SBP were independently and synergistically associated with UAE, which is considered as a risk factor for chronic kidney disease and cardiovascular events. SDB may raise UAE not only by increasing BP but involving other pathologic pathways.
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20
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Nicholl DDM, Hanly PJ, Zalucky AA, Handley GB, Sola DY, Ahmed SB. Nocturnal hypoxemia severity influences the effect of CPAP therapy on renal renin-angiotensin-aldosterone system activity in humans with obstructive sleep apnea. Sleep 2021; 44:5983782. [PMID: 33734385 DOI: 10.1093/sleep/zsaa228] [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: 07/15/2020] [Revised: 10/09/2020] [Indexed: 01/12/2023] Open
Abstract
STUDY OBJECTIVES Nocturnal hypoxemia (NH) in obstructive sleep apnea (OSA) is associated with renal renin-angiotensin-aldosterone system (RAAS) up-regulation and loss of kidney function. Continuous positive airway pressure (CPAP) therapy is associated with RAAS down-regulation, though the impact of NH severity remains unknown. We sought to determine whether NH severity alters the effect of CPAP on renal hemodynamics and RAAS activity in humans. METHODS Thirty sodium-replete, otherwise healthy, OSA participants (oxygen desaturation index ≥ 15 h-1) with NH (SpO2 < 90% ≥ 12%/night) were studied pre- and post-CPAP (>4 h/night∙4 weeks). NH severity was characterized as moderate (mean SpO2[MSpO2] ≥ 90%; N = 15) or severe (MSpO2 < 90%; N = 15). Glomerular filtration rate (GFR), renal plasma flow (RPF), and filtration fraction (FF) were measured at baseline and in response to angiotensin-II (3 ng/kg/min∙30 min, 6 ng/kg/min∙30 min), a marker of RAAS activity. RESULTS Pre-CPAP, baseline renal hemodynamics did not differ by NH severity. Pre-CPAP, severe NH participants demonstrated blunted GFR (Δ30 min, -9 ± 4 vs 1 ± 3 mL/min, p = 0.021; Δ60 min, -5 ± 5 vs 8 ± 5 mL/min, p = 0.017) and RPF (Δ30 min, -165 ± 13 vs -93 ± 19 mL/min, p = 0.003; Δ60 min, -208 ± 18 vs -112 ± 22 mL/min, p = 0.001; moderate vs severe) responses to angiotensin-II. Post-CPAP, severe NH participants demonstrated maintained GFR (112 ± 5 vs 108 ± 3 mL/min, p = 0.9), increased RPF (664 ± 35 vs 745 ± 34 mL/min, p = 0.009), reduced FF (17.6 ± 1.4 vs 14.9 ± 0.6%, p = 0.009), and augmented RPF responses to Angiotensin-II (Δ30 min, -93 ± 19 vs -138 ± 16 mL/min, p = 0.009; Δ60 min, -112 ± 22 vs -175 ± 20 mL/min, p = 0.001; pre- vs post-CPAP), while moderate participants were unchanged. CONCLUSIONS Correction of severe, but not moderate, NH with CPAP therapy was associated with improved renal hemodynamics and decreased renal RAAS activity in humans with OSA.
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Affiliation(s)
- David D M Nicholl
- Department of Medicine, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - Patrick J Hanly
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Sleep Centre, Foothills Medical Centre, Calgary, AB, Canada.,Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Ann A Zalucky
- Department of Medicine, University of Toronto, Toronto, ON, Canada
| | | | - Darlene Y Sola
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Sofia B Ahmed
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.,Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada.,Alberta Kidney Disease Network, AB, Canada
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21
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Does CPAP Improve Chronic Kidney Disease in OSA?: It's Still a Maybe. Chest 2021; 159:1717-1718. [PMID: 33965129 DOI: 10.1016/j.chest.2021.01.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 01/06/2021] [Indexed: 11/22/2022] Open
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22
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Rimke AN, Ahmed SB, Turin TC, Pendharkar SR, Raneri JK, Lynch EJ, Hanly PJ. Effect of CPAP Therapy on Kidney Function in Patients With Chronic Kidney Disease: A Pilot Randomized Controlled Trial. Chest 2020; 159:2008-2019. [PMID: 33316238 DOI: 10.1016/j.chest.2020.11.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 11/22/2020] [Accepted: 11/25/2020] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND OSA is common in chronic kidney disease (CKD) and may accelerate a decline in kidney function. It is not clear whether treatment of OSA with CPAP improves kidney function. RESEARCH QUESTION Does treatment with CPAP improve kidney function in patients with CKD and coexisting OSA? STUDY DESIGN AND METHODS A randomized, controlled, nonblinded, parallel clinical trial was performed of patients with stages 3 and 4 CKD and coexisting OSA comparing the effect of CPAP vs usual care on the estimated glomerular filtration rate (eGFR) and the urine albumin to creatinine ratio (ACR) over 12 months. RESULTS Fifty-seven patients were enrolled and 30 were randomized to CPAP. They had moderately severe CKD (eGFR, 38.4 ± 1.5 mL/min/1.73 m2) and significant OSA and nocturnal hypoxemia (oxygen desaturation index: 23.9 events/h; interquartile range [IQR], 20.3 events/h; mean peripheral capillary oxygen saturation: 89.5%; IQR, 1.7%); 60% had baseline albuminuria (ACR, > 3 mg/mmol). No significant difference was found between CPAP and usual care in the change in eGFR and ACR over 12 months. Although some improvement in eGFR occurred with CPAP therapy in patients with a lower risk of CKD progression, this did not reach statistical significance. INTERPRETATION Although CPAP did not provide additional renal benefits over usual care in all CKD patients, some evidence suggested that CPAP slowed the decline in eGFR in CKD patients with a lower risk of CKD progression. These preliminary data support the need for larger clinical trials exploring the effects of CPAP on kidney function. TRIAL REGISTRY ClinicalTrials.gov; No.: NCT02420184; URL: www.clinicaltrials.gov.
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Affiliation(s)
- Alex N Rimke
- Sleep Centre, Foothills Medical Centre, University of Calgary, Calgary, AB, Canada; Libin Cardiovascular Institute of Alberta, Calgary, AB, Canada
| | - Sofia B Ahmed
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Libin Cardiovascular Institute of Alberta, Calgary, AB, Canada; Alberta Kidney Disease Network, Calgary, AB, Canada
| | - Tanvir C Turin
- Department of Family Medicine, University of Calgary, Calgary, AB, Canada
| | - Sachin R Pendharkar
- Sleep Centre, Foothills Medical Centre, University of Calgary, Calgary, AB, Canada; Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Jill K Raneri
- Sleep Centre, Foothills Medical Centre, University of Calgary, Calgary, AB, Canada
| | - Emma J Lynch
- Sleep Centre, Foothills Medical Centre, University of Calgary, Calgary, AB, Canada
| | - Patrick J Hanly
- Sleep Centre, Foothills Medical Centre, University of Calgary, Calgary, AB, Canada; Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
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23
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Sivam S, Yee BJ, Chadban SJ, Piper AJ, Hanly PJ, Wang D, Wong KK, Grunstein RR. Prevalence of chronic kidney disease in obesity hypoventilation syndrome and obstructive sleep apnoea with severe obesity. Sleep Med 2020; 74:73-77. [DOI: 10.1016/j.sleep.2020.05.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/11/2020] [Accepted: 05/13/2020] [Indexed: 01/28/2023]
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24
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Obstructive sleep apnea syndrome (OSAS) related hypertension: A review of pathophysiology and potential therapeutic approaches. JOURNAL OF SURGERY AND MEDICINE 2020. [DOI: 10.28982/josam.727915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Ayas NT, Foster GE, Shah N, Floras J, Laher I. Could Adjunctive Pharmacology Mitigate Cardiovascular Consequences of Obstructive Sleep Apnea? Am J Respir Crit Care Med 2020; 200:551-555. [PMID: 30875238 DOI: 10.1164/rccm.201811-2097pp] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Affiliation(s)
- Najib T Ayas
- Sleep Disorders Program.,Division of Respiratory Medicine and.,Division of Critical Care Medicine, Department of Medicine, and.,Canadian Sleep and Circadian Network and
| | - Glen E Foster
- Canadian Sleep and Circadian Network and.,Centre for Heart, Lung, and Vascular Health, School of Health and Exercise Science, University of British Columbia, Kelowna, British Columbia, Canada
| | - Neomi Shah
- Division of Pulmonary, Critical Care, and Sleep, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York; and
| | - John Floras
- Division of Cardiology, Department of Medicine, University Health Network and Sinai Health System, University of Toronto, Toronto, Ontario, Canada
| | - Ismail Laher
- Department of Anesthesiology, Pharmacology, and Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada.,Canadian Sleep and Circadian Network and
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26
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Hanly PJ, Ahmed S, Fjell CD, Handley GB, Sola D, Nicholl D, Zalucky A. Urine biomarkers of renal renin-angiotensin system activity: Exploratory analysis in humans with and without obstructive sleep apnea. Physiol Rep 2020; 8:e14376. [PMID: 32207249 PMCID: PMC7090371 DOI: 10.14814/phy2.14376] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 01/23/2020] [Accepted: 01/24/2020] [Indexed: 11/24/2022] Open
Abstract
Obstructive sleep apnea (OSA) may contribute to kidney injury by activation of the renin-angiotensin system (RAS), which is reduced by continuous positive airway pressure (CPAP) therapy. A biomarker in the urine that reflects renal RAS activity could identify patients at risk of kidney injury and monitor their response to CPAP therapy. Nine patients with OSA and six matched control subjects without OSA were recruited. Renal RAS activity was measured by the renovasoconstrictor response to Angiotensin II challenge, a validated marker of RAS activity, and urine samples were collected in all subjects at baseline and repeated in those with OSA following treatment with CPAP. A broad range (1,310) of urine analytes was measured including 26 associated with the RAS signaling pathway. The OSA group was a similar age and weight as the control group (48.7 ± 10.4 vs. 47.7 ± 9.3 yrs; BMI 36.9 ± 7.2 vs. 34.7 ± 2.5 kg/m2 ) and had severe sleep apnea (ODI 51.1 ± 26.8 vs. 4.3 ± 2/hour) and nocturnal hypoxemia (mean SaO2 87 ± 5.2 vs. 92.6 ± 1.1%). CPAP corrected OSA associated with a return of the renovasocontrictor response to Angiotensin II to control levels. Partial least squares (PLS) logistic regression analysis showed significant separation between pre- and post-CPAP levels (p < .002) when all analytes were used, and a strong trend when only RAS-associated analytes were used (p = .05). These findings support the concept that urine analytes may be used to identify OSA patients who are susceptible to kidney injury from OSA before renal function deteriorates and to monitor the impact of CPAP therapy on renal RAS activity.
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Affiliation(s)
- Patrick J Hanly
- Department of Medicine, University of Calgary, Calgary, AB, Canada
- Sleep Centre, Foothills Medical Centre, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Sofia Ahmed
- Department of Medicine, University of Calgary, Calgary, AB, Canada
- Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
- Alberta Kidney Disease Network, Canada
| | - Chris D Fjell
- True Bay Technologies Inc, British Columbia Centre for Disease Control Public Health Laboratory, Vancouver, BC, Canada
| | | | - Darlene Sola
- Department of Medicine, University of Calgary, Calgary, AB, Canada
- Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
| | - David Nicholl
- Department of Medicine, University of Calgary, Calgary, AB, Canada
- Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
| | - Ann Zalucky
- Department of Medicine, University of Calgary, Calgary, AB, Canada
- Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada
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27
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Lin CH, Lurie RC, Lyons OD. Sleep Apnea and Chronic Kidney Disease. Chest 2020; 157:673-685. [DOI: 10.1016/j.chest.2019.09.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/20/2019] [Accepted: 09/01/2019] [Indexed: 12/20/2022] Open
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28
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Elfeky E, El-Zaher AA, Elbendary A, Ganna S. Study of serum cystatin C levels in patients with obstructive sleep apnea. THE EGYPTIAN JOURNAL OF BRONCHOLOGY 2019. [DOI: 10.4103/ejb.ejb_31_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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29
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Nicholl DDM, Hanly PJ, Zalucky AA, Handley GB, Sola DY, Ahmed SB. Sex differences in renal hemodynamics and renin-angiotensin system activity post-CPAP therapy in humans with obstructive sleep apnea. Am J Physiol Renal Physiol 2019; 318:F25-F34. [PMID: 31608672 DOI: 10.1152/ajprenal.00290.2019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Men have faster loss of kidney function and greater renal renin-angiotensin system (RAS) activity compared with women. Obstructive sleep apnea (OSA) is common in chronic kidney disease; the vascular effects of OSA differ by sex, and OSA-associated glomerular hyperfiltration can be reversed by continuous positive airway pressure (CPAP) therapy. We evaluated sex differences in the effect of CPAP on renal hemodynamics and the renal RAS in OSA. Twenty-nine Na+-replete, otherwise healthy study participants with OSA (10 women and 19 men) with nocturnal hypoxemia were studied pre- and post-CPAP (>4 h/night for 4 wk). Renal hemodynamics [renal plasma flow (RPF), glomerular filtration rate (GFR), and filtration fraction(FF)] were measured at baseline and in response to ANG II challenge, as a marker of renal RAS activity, pre- and post-CPAP therapy for 1 mo. In women, CPAP was associated with increased RPF (626 ± 22 vs. 718 ± 43 mL/min, P = 0.007, pre- vs. post-CPAP), maintained GFR (108 ± 2 vs. 105 ± 3 mL/min, P = 0.8), and reduced FF (17.4 ± 0.8% vs. 15.0 ± 0.7%, P = 0.017). In men, CPAP was associated with maintained RPF (710 ± 37 vs. 756 ± 38 mL/min, P = 0.1), maintained GFR (124 ± 8 vs. 113 ± 6 mL/min, P = 0.055), and reduced FF (18.6 ± 1.7% vs. 15.5 ± 1.1%, P = 0.035). Pre-CPAP, there were no sex differences in renal hemodynamic responses to ANG II. CPAP use was associated with a greater renovasoconstrictive response to ANG II in women (RPF at Δ30 min: -100 ± 27 vs. -161 ± 25 mL/min, P = 0.007, and RPF at Δ60 min: -138 ± 27 vs. -206 ± 32 mL/min, P = 0.007) but not men. CPAP use was associated with improved renal hemodynamics in both sexes and downregulated renal RAS activity in women but not men.
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Affiliation(s)
- David D M Nicholl
- Department of Medicine, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Patrick J Hanly
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Sleep Centre, Foothills Medical Centre, Calgary, Alberta, Canada.,Libin Cardiovascular Institute, University of Calgary, Calgary, Alberta, Canada
| | - Ann A Zalucky
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | | | - Darlene Y Sola
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Libin Cardiovascular Institute, University of Calgary, Calgary, Alberta, Canada
| | - Sofia B Ahmed
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Sleep Centre, Foothills Medical Centre, Calgary, Alberta, Canada.,Alberta Kidney Disease Network, Canada
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Ahmed SB, Dumanski SM. Why Do Patients With Well-Controlled Vascular Risk Factors Develop Progressive Chronic Kidney Disease? Can J Cardiol 2019; 35:1170-1180. [DOI: 10.1016/j.cjca.2019.06.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 06/07/2019] [Accepted: 06/14/2019] [Indexed: 01/17/2023] Open
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Obstructive sleep apnea as a risk factor for incident end stage renal disease: a nationwide population-based cohort study from Korea. Clin Exp Nephrol 2019; 23:1391-1397. [PMID: 31468233 DOI: 10.1007/s10157-019-01779-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Accepted: 08/18/2019] [Indexed: 01/07/2023]
Abstract
BACKGROUND Obstructive sleep apnea (OSA) is known to be associated with metabolic dysregulation and incident cardiovascular diseases. However, its association with end-stage renal disease (ESRD) has not been clarified. This study aimed to evaluate longitudinally whether OSA is an independent risk factor for ESRD. METHODS This retrospective nationwide population-based cohort study included data on 67,359 patients with OSA and 336,795 age-, sex- and years of the enrollment-matched controls without OSA obtained from the Korean National Health Insurance Service database from 2009 to 2014. The study population was followed up from baseline to the date of ESRD diagnosis or until 2016. A Cox proportional-hazards model with multivariable adjustment was used to evaluate the association between OSA and incident ESRD. RESULTS A significantly higher incident ESRD risk (adjusted hazard ratio: 1.29, 95% confidence interval 1.02-1.62) was observed for patients older than 40 years with OSA than for matched controls, when adjusted for age, sex, income status, smoking, alcohol consumption, body mass index, diabetes, hypertension, dyslipidemia, estimated glomerular filtration rate, and proteinuria. The OSA group remained predictive of higher risk of ESRD incidence in subgroups of age ≥ 65 years, female sex, hypertension, dyslipidemia, proteinuria, and chronic kidney disease. CONCLUSION OSA was associated with a higher risk of incident ESRD. Understanding the association between OSA and ESRD might provide further insights to establish national health care policy.
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Abstract
PURPOSE OF REVIEW Obstructive sleep apnea (OSA) is highly prevalent in patients with chronic kidney disease (CKD). The relationship between OSA and CKD is likely to be bi-directional. On one hand, the presence of OSA leads to intermittent hypoxia, sympathetic nervous system activity, and hypertension, all of which may have deleterious effects on kidney function. On the other hand, in patients with end-stage renal disease (ESRD), intensification of renal replacement therapy has been shown to attenuate sleep apnea severity, suggesting that the renal disease itself contributes to the pathogenesis of OSA. The present review describes our current understanding of the bi-directional relationship between OSA and CKD. RECENT FINDINGS Studies suggest that the presence of OSA and nocturnal hypoxia may lead to worsening of kidney function. One potential mechanism is activation of the renin-angiotensin system by OSA, an effect which may be attenuated by CPAP therapy. In ESRD, fluid overload plays an important role in the pathogenesis of OSA and fluid removal by ultrafiltration leads to marked improvements in sleep apnea severity. SUMMARY OSA is associated with accelerated loss of kidney function. In patients with ESRD, fluid overload plays an important role in the pathogenesis of OSA.
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Voulgaris A, Marrone O, Bonsignore MR, Steiropoulos P. Chronic kidney disease in patients with obstructive sleep apnea. A narrative review. Sleep Med Rev 2019; 47:74-89. [PMID: 31376590 DOI: 10.1016/j.smrv.2019.07.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 06/30/2019] [Accepted: 07/02/2019] [Indexed: 10/26/2022]
Abstract
Prevalence of both chronic kidney disease (CKD) and obstructive sleep apnea (OSA) is continuously increasing. Moreover, the prevalence of OSA increases as kidney function declines and is higher among patients with end-stage renal disease (ESRD). In addition, OSA is recognized as a potential nontraditional risk factor for development and progression of CKD. Continuous positive airway pressure (CPAP) plays a pivotal role in the management of OSA, eliminating patients' symptoms and improving their quality of life. Recent studies suggested that CPAP treatment may have beneficial effects on kidney function among patients with OSA. This narrative review summarizes the existing knowledge on the association between CKD and OSA, with emphasis on the epidemiology, the pathophysiology of the development of CKD in OSA and vice versa, as well as the effect of CPAP on renal function.
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Affiliation(s)
- Athanasios Voulgaris
- MSc Programme in Sleep Medicine, Medical School, Democritus University of Thrace, Alexandroupolis, Greece; Department of Pneumonology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Oreste Marrone
- Institute of Biomedicine and Molecular Immunology, CNR, Palermo, Italy
| | - Maria R Bonsignore
- Institute of Biomedicine and Molecular Immunology, CNR, Palermo, Italy; Pulmonary Division, University Hospital AOUP Paolo Giaccone, PROMISE Department, University of Palermo, Palermo, Italy
| | - Paschalis Steiropoulos
- MSc Programme in Sleep Medicine, Medical School, Democritus University of Thrace, Alexandroupolis, Greece; Department of Pneumonology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece.
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Rimke AN, Ahmed SB, Turin TC, Pendharkar SR, Raneri JK, Lynch EJ, Hanly PJ. Effect of CPAP therapy on kidney function in patients with obstructive sleep apnoea and chronic kidney disease: a protocol for a randomised controlled clinical trial. BMJ Open 2019; 9:e024632. [PMID: 30904853 PMCID: PMC6475212 DOI: 10.1136/bmjopen-2018-024632] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 01/04/2019] [Accepted: 02/13/2019] [Indexed: 12/21/2022] Open
Abstract
INTRODUCTION Obstructive sleep apnoea (OSA) is common in patients with chronic kidney disease (CKD) and may contribute to the progression of kidney disease either through direct effects of hypoxia on the kidney or indirectly through hypoxaemia-induced oxidative stress, endothelial dysfunction, inflammation, activation of the renin-angiotensin and sympathetic nervous systems, and hypertension. Treatment of OSA with continuous positive airway pressure (CPAP) improves many of these physiological abnormalities in patients with normal renal function, though to date there are no trials evaluating the effect of OSA treatment on kidney function in patients with CKD. The purpose of this study is to test the feasibility and efficacy of CPAP therapy in CKD patients with OSA. METHODS AND ANALYSIS The study is a randomised, controlled, non-blinded, parallel clinical trial in which patients with established CKD are screened for OSA. Patients with OSA are randomised to either conventional medical therapy (control group) or medical therapy and CPAP (CPAP group) and followed for 1 year. The primary outcome is the change in estimated glomerular filtration rate. Secondary outcomes are the change in the urinary albumin/creatinine ratio, the Epworth Sleepiness Scale , Pittsburgh Sleep Quality Index and Kidney Disease Quality of Life questionnaire. ETHICS AND DISSEMINATION Ethics approval has been obtained from the Conjoint Health Research Ethics Board (ID: REB15-0055). Results from this study will be disseminated through presentations at scientific conferences and publication in peer-reviewed journals. TRIAL REGISTRATION NUMBER NCT02420184; Pre-results.
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Affiliation(s)
| | | | | | | | | | | | - Patrick J Hanly
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Sleep Centre, Foothills Medical Centre, Calgary, Alberta, Canada
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Calero K, Anderson WM. Can Poor Sleep Cause Kidney Disease? Another Step Closer to the Answer. J Clin Sleep Med 2019; 15:371-372. [PMID: 30853058 DOI: 10.5664/jcsm.7652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 02/28/2019] [Indexed: 01/30/2023]
Affiliation(s)
- Karel Calero
- College of Medicine, Pulmonary, Critical Care and Sleep Medicine, University of South Florida, Tampa, Florida
| | - William McDowell Anderson
- College of Medicine, Pulmonary, Critical Care and Sleep Medicine, University of South Florida, Tampa, Florida
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Bonsignore MR, Baiamonte P, Mazzuca E, Castrogiovanni A, Marrone O. Obstructive sleep apnea and comorbidities: a dangerous liaison. Multidiscip Respir Med 2019; 14:8. [PMID: 30809382 PMCID: PMC6374907 DOI: 10.1186/s40248-019-0172-9] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 01/20/2019] [Indexed: 12/16/2022] Open
Abstract
Obstructive sleep apnea (OSA) is a highly prevalent disease, and is traditionally associated with increased cardiovascular risk. The role of comorbidities in OSA patients has emerged recently, and new conditions significantly associated with OSA are increasingly reported. A high comorbidity burden worsens prognosis, but some data suggest that CPAP might be protective especially in patients with comorbidities. Aim of this narrative review is to provide an update on recent studies, with special attention to cardiovascular and cerebrovascular comorbidities, the metabolic syndrome and type 2 diabetes, asthma, COPD and cancer. Better phenotypic characterization of OSA patients, including comorbidities, will help to provide better individualized care. The unsatisfactory adherence to CPAP in patients without daytime sleepiness should prompt clinicians to examine the overall risk profile of each patient in order to identify subjects at high risk for worse prognosis and provide the optimal treatment not only for OSA, but also for comorbidities.
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Affiliation(s)
- Maria R. Bonsignore
- Division of Respiratory Medicine, Biomedical Department of Internal Medicine and Medical Specialties (Di.Bi.M.I.S), University Hospital Paolo Giaccone, University of Palermo, Piazza delle Cliniche, 2, 90100 Palermo, Italy
- National Research Council (CNR), Institute of Biomedicine and Molecular Immunology (IBIM), Palermo, Italy
| | - Pierpaolo Baiamonte
- Division of Respiratory Medicine, Biomedical Department of Internal Medicine and Medical Specialties (Di.Bi.M.I.S), University Hospital Paolo Giaccone, University of Palermo, Piazza delle Cliniche, 2, 90100 Palermo, Italy
| | - Emilia Mazzuca
- Division of Respiratory Medicine, Biomedical Department of Internal Medicine and Medical Specialties (Di.Bi.M.I.S), University Hospital Paolo Giaccone, University of Palermo, Piazza delle Cliniche, 2, 90100 Palermo, Italy
| | - Alessandra Castrogiovanni
- Clinic for Pneumology und Allergology, Center of Sleep Medicine and Respiratory Care, Bethanien Hospital, Solingen, Germany
| | - Oreste Marrone
- National Research Council (CNR), Institute of Biomedicine and Molecular Immunology (IBIM), Palermo, Italy
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McNicholas WT. Obstructive sleep apnoea and comorbidity - an overview of the association and impact of continuous positive airway pressure therapy. Expert Rev Respir Med 2019; 13:251-261. [PMID: 30691323 DOI: 10.1080/17476348.2019.1575204] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Obstructive sleep apnoea (OSA) is highly prevalent and there is considerable evidence supporting an independent association with a wide range of co-morbidities including cardiovascular, endocrine and metabolic, neuropsychiatric, pulmonary, and renal. Areas covered: A PubMed search of all the recent literature relating to OSA and co-morbidities was undertaken to critically evaluate the potential relationships and possible benefit of continuous positive airway pressure (CPAP) therapy. Expert commentary: The evidence supporting an independent association is stronger for some co-morbidities than others and in cardiovascular diseases is strongest for hypertension and atrial fibrillation. Potential mechanisms include intermittent hypoxia, fluctuating intrathoracic pressure, and recurring micro-arousals that trigger cell and molecular consequences including sympathetic excitation, systemic inflammation and oxidative stress, in addition to metabolic and endothelial dysfunction. Different mechanisms may predominate in individual co-morbidities. Recent long term randomised controlled trials have cast doubt on benefits to co-morbidities from CPAP therapy of OSA, especially where co-morbidities are already established. However, benefits may result in patients who are compliant with therapy and further research is required to clearly establish the role of OSA therapy in both primary and secondary prevention of co-morbidities.
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Affiliation(s)
- Walter T McNicholas
- a Department of Respiratory and Sleep Medicine, St. Vincent's Hospital Group and School of Medicine , University College Dublin , Dublin , Ireland.,b First Affiliated Hospital of Guangzhou Medical University , Guangzhou , China
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Li X, Liu C, Zhang H, Zhang J, Zhao M, Sun D, Xia M, Han M. Effect of 12-month nasal continuous positive airway pressure therapy for obstructive sleep apnea on progression of chronic kidney disease. Medicine (Baltimore) 2019; 98:e14545. [PMID: 30813163 PMCID: PMC6407975 DOI: 10.1097/md.0000000000014545] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Obstructive sleep apnea (OSA) is common among patients with chronic kidney disease (CKD). CKD may increase the risk of OSA, and OSA may increase the risk of renal injury. Nasal continuous positive airway pressure (nCPAP) is the standard treatment for OSA. However, the effect of nCPAP on the progression of CKD is unclear. METHODS A total of 395 patients with stage 3/4 CKD were initially examined, and 269 patients (148 non-OSA cases; 79 mild OSA cases; 42 moderate/severe OSA cases) were analyzed after implementation of the exclusion criteria. The severity of OSA was determined by polysomnography (PSG). Fifty-two OSA patients (32 mild OSA cases; 20 moderate/severe OSA cases) received nCPAP treatment for 12 months. Variables associated with OSA severity and estimated glomerular filtration rate (eGFR) were evaluated before and after the 12-month nCPAP treatment. RESULTS Among all 269 CKD patients, body mass index (BMI), and eGFR had significant associations with OSA severity. Age, BMI, apnea-hypopnea index (AHI), mean SaO2%, and SaO2 <90% monitoring time had independent associations with lower eGFR. The 12-month nCPAP treatment significantly reduced the rate of eGFR decline. Univariate and multivariate analysis indicated that age, BMI, AHI, mean SaO2%, and SaO2 <90% monitoring time were independently associated with reduced eGFR. Furthermore, nCPAP treatment significantly improved eGFR, AHI, mean SaO2, and SaO2 <90% monitoring time in patients with mild OSA, and improved systolic/diastolic blood pressure, urinary protein level, eGFR, AHI, mean SaO2, and SaO2 <90% monitoring time for patients with moderate/severe OSA. CONCLUSION This study of patients with CKD and OSA indicated that nCPAP therapy significantly ameliorated CKD progression, especially in those with moderate/severe OSA.
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Affiliation(s)
| | | | | | | | - Miaoqing Zhao
- Department of Pathology, Shandong Provincial Hospital affiliated to Shandong University
| | - Dianshui Sun
- Cancer Center, the Second Hospital of Shandong University, Shandong University, Jinan, Shandong Province
| | | | - Min Han
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
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Deflandre E, Piette N, Bonhomme V, Degey S, Cambron L, Poirrier R, Brichant JF, Joris J. Comparison of clinical scores in their ability to detect hypoxemic severe OSA patients. PLoS One 2018; 13:e0196270. [PMID: 29734398 PMCID: PMC5937788 DOI: 10.1371/journal.pone.0196270] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 04/10/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Severe obstructive sleep apnea (sOSA) and preoperative hypoxemia are risk factors of postoperative complications. Patients exhibiting the combination of both factors are probably at higher perioperative risk. Four scores (STOP-Bang, P-SAP, OSA50, and DES-OSA) are currently used to detect OSA patients preoperatively. This study compared their ability to specifically detect hypoxemic sOSA patients. METHODS One hundred and fifty-nine patients scheduled for an overnight polysomnography (PSG) were prospectively enrolled. The ability of the four scores to predict the occurrence of hypoxemic episodes in sOSA patients was compared using sensitivity (Se), specificity (Sp), Youden Index, Cohen kappa coefficient, and the area under ROC curve (AUROC) analyses. RESULTS OSA50 elicited the highest Se [95% CI] at detecting hypoxemic sOSA patients (1 [0.89-1]) and was significantly more sensitive than STOP-Bang in that respect. DES-OSA was significantly more specific (0.58 [0.49-0.66]) than the three other scores. The Youden Index of DES-OSA (1.45 [1.33-1.58]) was significantly higher than those of STOP-Bang, P-SAP, and OSA50. The AUROC of DES-OSA (0.8 [0.71-0.89]) was significantly the largest. The highest Kappa value was obtained for DES-OSA (0.33 [0.21-0.45]) and was significantly higher than those of STOP-Bang, and OSA50. CONCLUSIONS In our population, DES-OSA appears to be more effective than the three other scores to specifically detect hypoxemic sOSA patients. However prospective studies are needed to confirm these findings in a perioperative setting. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov: NCT02050685.
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Affiliation(s)
- Eric Deflandre
- Department of Anesthesia, Clinique Saint-Luc of Bouge, Namur, Belgium
- Department of Anesthesia, University of Liege, Liege, Belgium
- Cabinet Medical ASTES, Jambes, Namur, Belgium
- * E-mail:
| | - Nicolas Piette
- Department of Anesthesia, University of Liege, Liege, Belgium
| | - Vincent Bonhomme
- Department of Anesthesia, University of Liege, Liege, Belgium
- University Department of Anesthesia and ICM, CHR Citadelle, Liege, Belgium
| | | | - Laurent Cambron
- Sleep Laboratory Centre (CETES), University of Liege, Liege, Belgium
| | - Robert Poirrier
- Sleep Laboratory Centre (CETES), University of Liege, Liege, Belgium
| | | | - Jean Joris
- Department of Anesthesia, University of Liege, Liege, Belgium
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Khayat RN, Varadharaj S, Porter K, Sow A, Jarjoura D, Gavrilin MA, Zweier JL. Angiotensin Receptor Expression and Vascular Endothelial Dysfunction in Obstructive Sleep Apnea. Am J Hypertens 2018; 31:355-361. [PMID: 29036393 DOI: 10.1093/ajh/hpx174] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 09/25/2017] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Obstructive sleep apnea (OSA) is associated with vascular endothelial dysfunction (VED) in otherwise healthy patients. The role of renin-angiotensin system (RAS) in the OSA induced VED is not well understood. METHODS Recently diagnosed OSA patients with very low cardiovascular disease (CVD) risk (Framingham score <5%) were studied at diagnosis and after 12 weeks of verified continuous positive airway pressure (CPAP) therapy. Participants underwent biopsy of gluteal subcutaneous tissue at baseline and after CPAP. Microcirculatory endothelial expression of angiotensin receptors type-1 (AT-1) and type-2 (AT-2) was measured in the subcutaneous tissue using quantitative confocal microscopy techniques. The ex-vivo effect of AT-1 receptor blockade (ARB) on endothelial superoxide production was also measured before and after CPAP treatment. RESULTS In OSA patients (n = 11), microcirculatory endothelial AT1 expression decreased from 873 (200) (fluorescence units) at baseline to 393 (59) units after 12 weeks of CPAP (P = 0.02). AT2 expression did not decrease significantly in these patients (479 (75) to 329 (58) post CPAP (P = 0.08)). The ex-vivo addition of the losartan to the microcirculatory endothelium resulted in decreased superoxide expression in the vascular walls from 14.2 (2.2) units to 4.2 (0.8) P < 0.001; while it had no effect on post-CPAP patient tissue (P = 0.64). CONCLUSIONS In OSA patients with no to minimal CVD risk, VED is associated with upregulation of AT-1 expression that is reversible with CPAP. Endothelial oxidative stress was reversible with ARB. RAS activation may play an important role in the development of early CVD risk in OSA patients.
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Affiliation(s)
- Rami N Khayat
- Department of Internal Medicine, The Sleep Heart Program, The Ohio State University, USA
- Division of Pulmonary Critical Care and Sleep, The Ohio State University, USA
| | - Saradhadevi Varadharaj
- Department of Internal Medicine, The Davis Heart and Lung Research Institute and Division of Cardiovascular Medicine, The Ohio State University, USA
| | - Kyle Porter
- The Center for Biostatistics, The Ohio State University, USA
| | - Angela Sow
- Department of Internal Medicine, The Sleep Heart Program, The Ohio State University, USA
- Department of Internal Medicine, The Davis Heart and Lung Research Institute and Division of Cardiovascular Medicine, The Ohio State University, USA
| | - David Jarjoura
- Department of Internal Medicine, The Sleep Heart Program, The Ohio State University, USA
| | - Mikhail A Gavrilin
- Division of Pulmonary Critical Care and Sleep, The Ohio State University, USA
| | - Jay L Zweier
- Department of Internal Medicine, The Davis Heart and Lung Research Institute and Division of Cardiovascular Medicine, The Ohio State University, USA
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Abuyassin B, Badran M, Ayas NT, Laher I. Intermittent hypoxia causes histological kidney damage and increases growth factor expression in a mouse model of obstructive sleep apnea. PLoS One 2018; 13:e0192084. [PMID: 29389945 PMCID: PMC5794148 DOI: 10.1371/journal.pone.0192084] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 01/16/2018] [Indexed: 01/01/2023] Open
Abstract
Epidemiological studies demonstrate an association between obstructive sleep apnea (OSA) and accelerated loss of kidney function. It is unclear whether the decline in function is due to OSA per se or to other confounding factors such as obesity. In addition, the structural kidney abnormalities associated with OSA are unclear. The objective of this study was to determine whether intermittent hypoxia (IH), a key pathological feature of OSA, induces renal histopathological damage using a mouse model. Ten 8-week old wild-type male CB57BL/6 mice were randomly assigned to receive either IH or intermittent air (IA) for 60 days. After euthanasia, one kidney per animal was paraformaldehyde-fixed and then sectioned for histopathological and immunohistochemical analysis. Measurements of glomerular hypertrophy and mesangial matrix expansion were made in periodic acid–Schiff stained kidney sections, while glomerular transforming growth factor-β1 (TGF-β1), connective tissue growth factor (CTGF) and vascular endothelial growth factor-A (VEGF-A) proteins were semi-quantified by immunohistochemistry. The antigen-antibody reaction was detected by 3,3′-diaminobenzidine chromogen where the color intensity semi-quantified glomerular protein expression. To enhance the accuracy of protein semi-quantification, the percentage of only highly-positive staining was used for analysis. Levels of TGF-β, CTGF and VEGF-A proteins in the kidney cortex were further quantified by western blotting. Cellular apoptosis was also investigated by measuring cortical antiapoptotic B-cell lymphoma 2 (Bcl-2) and apoptotic Bcl-2-associated X (Bax) proteins by western blotting. Further investigation of cellular apoptosis was carried out by fluorometric terminal deoxynucleotidyl transferase (TdT) dUTP Nick-End Labeling (TUNEL) staining. Finally, the levels of serum creatinine and 24-hour urinary albumin were measured as a general index of renal function. Our results indicate that mice exposed to IH have an increased glomerular area (by 1.13 fold, p< 0.001) and expansion of mesangial matrix (by 1.8 fold, p< 0.01). Moreover, the glomerular expressions of TGF-β1, CTGF and VEGF-A proteins were 2.7, 2.2 and 3.8-fold higher in mice exposed to IH (p< 0.05 for all). Furthermore, western blotting protein analysis demonstrates that IH-exposed mice express higher levels of TGF-β1, CTGF and VEGF-A proteins by 1.9, 4.0 and 1.6-fold (p< 0.05 for all) respectively. Renal cellular apoptosis was greater in the IH group as shown by an increased cortical Bax/Bcl-2 protein ratio (p< 0.01) and higher fluorometric TUNEL staining (p< 0.001). Finally, 24-hr urinary albumin levels were higher in mice exposed to IH (43.4 μg vs 9.7 μg, p< 0.01), while there were no differences in serum creatinine levels between the two groups. We conclude that IH causes kidney injury that is accompanied by glomerular hypertrophy, mesangial matrix expansion, increased expression of glomerular growth factors and an increased cellular apoptosis.
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Affiliation(s)
- Bisher Abuyassin
- Department of Medicine, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Mohammad Badran
- Departments of Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Najib T. Ayas
- Department of Medicine, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Ismail Laher
- Departments of Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
- * E-mail:
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Marrone O, Bonsignore MR. Obstructive sleep apnea and chronic kidney disease: open questions on a potential public health problem. J Thorac Dis 2018; 10:45-48. [PMID: 29600018 DOI: 10.21037/jtd.2017.12.12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Oreste Marrone
- Institute of Biomedicine and Molecular Immunology (IBIM), National Research Council (CNR), Palermo, Italy
| | - Maria R Bonsignore
- Institute of Biomedicine and Molecular Immunology (IBIM), National Research Council (CNR), Palermo, Italy.,Biomedical Department of Internal and Specialistic Medicine (DiBiMIS), University of Palermo, Palermo, Italy
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Prevalence of Sleep-Disordered Breathing and Patient Characteristics in a Coronary Artery Disease Cohort Undergoing Cardiovascular Rehabilitation. J Cardiopulm Rehabil Prev 2017; 36:421-429. [PMID: 27490427 DOI: 10.1097/hcr.0000000000000192] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE Coronary artery disease (CAD) is a leading cause of death and identification of risk factors for CAD is crucial. One such potential risk factor is sleep-disordered breathing (SDB). This prospective cohort study investigated the prevalence of SDB and determined risk factors for the presence of SDB in a large CAD cohort undergoing cardiac rehabilitation. METHODS A total of 1425 patients with confirmed CAD starting rehabilitation were screened for SDB using cardiorespiratory polygraphy (n = 921) or polygraphy plus pulse oximetry (n = 484). RESULTS A total of 1408 patients were included; 69.5% were male, 78% had acute coronary syndrome, and 22% had stable CAD. The prevalence of SDB (apnea-hypopnea index [AHI] ≥5/h) was 83%. Moderate to severe SDB (AHI ≥15/h) was present in 53%. Up to 70% of coronary artery bypass graft (CABG) recipients had an AHI ≥15/h versus 33% of those who had not undergone CABG. SDB severity did not vary significantly in patients with stable CAD or on the basis of left ventricular ejection fraction. SDB was more severe and the frequency of oxygen desaturation was higher in men than in women. Multivariate logistic regression identified age, sex, body mass index, and CABG as independent risk factors for severe SDB. CONCLUSION SDB is a highly prevalent comorbidity in patients with CAD, particularly those who have undergone CABG. These results strengthen existing associations and emphasize the importance of diagnosing and monitoring SDB in patients with CAD entering a cardiac rehabilitation program. Early diagnosis and intervention has the potential to have a beneficial effect on CAD prognosis.
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Loffler KA, Heeley E, Freed R, Anderson CS, Brockway B, Corbett A, Chang CL, Douglas JA, Ferrier K, Graham N, Hamilton GS, Hlavac M, McArdle N, McLachlan J, Mukherjee S, Naughton MT, Thien F, Young A, Grunstein RR, Palmer LJ, Woodman RJ, Hanly PJ, McEvoy RD. Effect of Obstructive Sleep Apnea Treatment on Renal Function in Patients with Cardiovascular Disease. Am J Respir Crit Care Med 2017; 196:1456-1462. [PMID: 28743190 DOI: 10.1164/rccm.201703-0603oc] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Obstructive sleep apnea (OSA) is associated with impaired renal function, but uncertainty exists over whether OSA treatment can influence renal outcomes. OBJECTIVES To determine the effects of continuous positive airway pressure (CPAP) on renal function in subjects with coexisting OSA and cardiovascular disease. METHODS This was a substudy of the international SAVE (Sleep Apnea Cardiovascular Endpoints) trial, in which 2,717 patients with moderate to severe OSA and established coronary or cerebrovascular disease were randomized to receive either CPAP plus usual care or usual care alone. Renal function and adverse renal events were compared between the CPAP (n = 102) and usual care (n = 98) groups. Glomerular filtration rate was estimated at randomization and at the end of follow-up, and the urinary albumin-to-creatinine ratio was measured at study exit. MEASUREMENTS AND MAIN RESULTS In 200 substudy participants (mean age, 64 yr; median, 4% oxygen desaturation index; 20 events/h; mean estimated glomerular filtration rate at baseline, 82 ml/min/1.73 m2), the median (interquartile range) changes in estimated glomerular filtration rate (ml/min/1.73 m2/yr) were -1.64 (-3.45 to -0.740) in the CPAP group and -2.30 (-4.53 to -0.71) in the usual care group (P = 0.21) after a median of 4.4 years. There were no between-group differences in end-of-study urinary albumin-to-creatinine ratio or in the occurrence of serious renal or urinary adverse events during the trial. The level of CPAP adherence did not influence the findings. CONCLUSIONS CPAP treatment of OSA in patients with cardiovascular disease does not alter renal function or the occurrence of renal adverse events. Clinical trial registered with www.clinicaltrials.gov (NCT00738179).
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Affiliation(s)
- Kelly A Loffler
- 1 Adelaide Institute for Sleep Health: A Flinders Centre of Research Excellence and
| | - Emma Heeley
- 1 Adelaide Institute for Sleep Health: A Flinders Centre of Research Excellence and.,2 The George Institute for Global Health, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Ruth Freed
- 2 The George Institute for Global Health, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Craig S Anderson
- 1 Adelaide Institute for Sleep Health: A Flinders Centre of Research Excellence and.,2 The George Institute for Global Health, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia.,3 Neurology Department and.,4 Central Clinical School and.,5 The George Institute China at Peking University Health Science Center, Beijing, China
| | | | - Alastair Corbett
- 4 Central Clinical School and.,7 Concord Repatriation General Hospital, Sydney, New South Wales, Australia
| | - Catherina L Chang
- 8 Department of Respiratory & Sleep Medicine, Waikato Hospital, Hamilton, New Zealand
| | - James A Douglas
- 9 The Prince Charles Hospital, Brisbane, Queensland, Australia
| | | | | | - Garun S Hamilton
- 12 Monash Health, Melbourne, Victoria, Australia.,13 School of Clinical Sciences, Monash University, Melbourne, Victoria, Australia
| | | | - Nigel McArdle
- 15 West Australian Sleep Disorders Research Institute, Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - John McLachlan
- 8 Department of Respiratory & Sleep Medicine, Waikato Hospital, Hamilton, New Zealand
| | - Sutapa Mukherjee
- 1 Adelaide Institute for Sleep Health: A Flinders Centre of Research Excellence and.,15 West Australian Sleep Disorders Research Institute, Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia.,16 Sleep Health Service, Southern Adelaide Local Health Network, Repatriation General Hospital, Daw Park, South Australia, Australia
| | - Matthew T Naughton
- 17 Alfred Hospital & Monash University-Centre of Clinical Research Excellence Clinical Trial Centre, Melbourne, Victoria, Australia
| | - Francis Thien
- 18 Eastern Health and Monash University, Melbourne, Victoria, Australia
| | - Alan Young
- 18 Eastern Health and Monash University, Melbourne, Victoria, Australia
| | - Ronald R Grunstein
- 20 Respiratory and Sleep Medicine Department, Royal Prince Alfred Hospital, Sydney Health Partners, Sydney, New South Wales, Australia.,19 Woolcock Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - Lyle J Palmer
- 21 School of Public Health, University of Adelaide, Adelaide, Australia; and
| | - Richard J Woodman
- 22 Flinders Centre for Epidemiology and Biostatistics, School of Medicine, Flinders University, Bedford Park, South Australia, Australia
| | - Patrick J Hanly
- 23 Sleep Centre, Foothills Medical Centre, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - R Doug McEvoy
- 1 Adelaide Institute for Sleep Health: A Flinders Centre of Research Excellence and.,16 Sleep Health Service, Southern Adelaide Local Health Network, Repatriation General Hospital, Daw Park, South Australia, Australia
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Ahmed SB. Can Treatment of Obstructive Sleep Apnea with Continuous Positive Airway Pressure Still Improve Kidney Outcomes? Am J Respir Crit Care Med 2017; 196:1370-1371. [DOI: 10.1164/rccm.201708-1591ed] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Sofia B. Ahmed
- Faculty of MedicineUniversity of CalgaryCalgary, Alberta, Canada
- Libin Cardiovascular Institute of Alberta, CalgaryAlberta, Canadaand
- Alberta Kidney Disease NetworkAlberta, Canada
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46
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Tempaku PF, Tufik S, Hirotsu C. Commentary: Stress Signal Network between Hypoxia and ER Stress in Chronic Kidney Disease. Front Physiol 2017; 8:243. [PMID: 28487661 PMCID: PMC5403942 DOI: 10.3389/fphys.2017.00243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 04/05/2017] [Indexed: 11/17/2022] Open
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Abstract
Sleep apnoea is a disorder characterised by repetitive pauses in breathing during sleep caused by airway occlusion (obstructive sleep apnoea) or altered control of breathing (central sleep apnoea). In this Clinical Year in Review, we summarise high-impact research from the past year pertaining to management, diagnosis and cardio-metabolic consequences of sleep apnoea.
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Affiliation(s)
- Jonathan C Jun
- Dept of Medicine, Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Swati Chopra
- Dept of Medicine, Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Alan R Schwartz
- Dept of Medicine, Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
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48
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Circadian rhythm of blood pressure and the renin–angiotensin system in the kidney. Hypertens Res 2016; 40:413-422. [DOI: 10.1038/hr.2016.166] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 10/12/2016] [Accepted: 10/17/2016] [Indexed: 01/13/2023]
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49
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The effect of sleep apnea on all-cause mortality in nondialyzed chronic kidney disease patients. Sleep Med 2016; 27-28:32-38. [DOI: 10.1016/j.sleep.2016.07.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 07/25/2016] [Accepted: 07/27/2016] [Indexed: 11/21/2022]
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50
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Gildeh N, Drakatos P, Higgins S, Rosenzweig I, Kent BD. Emerging co-morbidities of obstructive sleep apnea: cognition, kidney disease, and cancer. J Thorac Dis 2016; 8:E901-E917. [PMID: 27747026 DOI: 10.21037/jtd.2016.09.23] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Obstructive sleep apnea (OSA) causes daytime fatigue and sleepiness, and has an established relationship with cardiovascular and metabolic disease. Recent years have seen the emergence of an evidence base linking OSA with an increased risk of degenerative neurological disease and associated cognitive impairment, an accelerated rate of decline in kidney function with an increased risk of clinically significant chronic kidney disease (CKD), and with a significantly higher rate of cancer incidence and death. This review evaluates the evidence base linking OSA with these seemingly unrelated co-morbidities, and explores potential mechanistic links underpinning their development in patients with OSA, including intermittent hypoxia (IH), sleep fragmentation, sympathetic excitation, and immune dysregulation.
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Affiliation(s)
- Nadia Gildeh
- Sleep and Brain Plasticity Centre, Department of Neuroimaging, IOPPN, King's College and Imperial College, London, UK;; Sleep Disorders Centre, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Panagis Drakatos
- Sleep and Brain Plasticity Centre, Department of Neuroimaging, IOPPN, King's College and Imperial College, London, UK;; Sleep Disorders Centre, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Sean Higgins
- Sleep and Brain Plasticity Centre, Department of Neuroimaging, IOPPN, King's College and Imperial College, London, UK;; Sleep Disorders Centre, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Ivana Rosenzweig
- Sleep and Brain Plasticity Centre, Department of Neuroimaging, IOPPN, King's College and Imperial College, London, UK;; Sleep Disorders Centre, Guy's and St Thomas' NHS Foundation Trust, London, UK;; Danish Epilepsy Centre, Dianalund, Denmark
| | - Brian D Kent
- Sleep and Brain Plasticity Centre, Department of Neuroimaging, IOPPN, King's College and Imperial College, London, UK;; Sleep Disorders Centre, Guy's and St Thomas' NHS Foundation Trust, London, UK
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