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Cordero DA. Letter to the Editor: 'roles of vitamins and nutrition in obstructive sleep apnea'. Expert Rev Respir Med 2025:1-2. [PMID: 40281680 DOI: 10.1080/17476348.2025.2499145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2025] [Accepted: 04/24/2025] [Indexed: 04/29/2025]
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Loh HH, Tay SP, Koa AJ, Yong MC, Said A, Chai CS, Abdul Malik NM, Su AT, Tang BBC, Tan FHS, Sukor N. Unveiling the benefits of Vitamin D3 with SGLT-2 inhibitors for hypertensive obese obstructive sleep apnea patients. J Transl Med 2025; 23:296. [PMID: 40055713 PMCID: PMC11889775 DOI: 10.1186/s12967-025-06312-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2025] [Accepted: 02/23/2025] [Indexed: 05/13/2025] Open
Abstract
BACKGROUND Obstructive sleep apnea (OSA) is associated with poorer quality of life (QoL) and increased cardiovascular risks, which may be exacerbated by hypovitaminosis D. Sodium glucose transporter-2 inhibitor (SGLT2i) provides cardiovascular benefits beyond glycemic control. As vitamin D3 and SGLT2i act through different pathways with similar mechanisms in improving cardio-metabolic health, this study aimed to investigate the synergistic effects of this combination therapy in improving these parameters and QoL in hypertensive obese OSA patients. METHODS Patients who fulfilled the study criteria were randomized to receive: (i) Dapagliflozin, (ii) vitamin D3, (iii) Dapagliflozin plus vitamin D3, or (iv) no treatment, for 16 weeks. The parameters evaluated included anthropometric measurements, uric acid, HbA1c, lipid profile, steatotic liver disease grade, plasma aldosterone concentration, plasma renin concentration, ultrasound flow-mediated dilatation of brachial artery, hsCRP, heart rate variability (HRV), Epworth Sleepiness Scale (ESS), and QoL scores. RESULTS A total of 163 patients were recruited and 153 completed the study. The combination of vitamin D3 and Dapagliflozin treatment led to significant improvements in metabolic parameters and nocturnal heart rates, and prevented deterioration of HRV, with healthier HRV at the end of study visit compared to the control group. Only the combination group exhibited improvements in both ESS and QoL scores. CONCLUSIONS This is the first study to demonstrate beneficial effects of combining vitamin D3 and SGLT2i in cardio-metabolic outcomes and QoL in hypertensive obese OSA patients. These findings highlight the potential of this combination therapy in addressing the cardio-metabolic challenges and QoL in this patient population. TRIALS REGISTRATION NCT06690723. Registered 10 October 2024-Retrospectively registered, https://register. CLINICALTRIALS gov/prs/beta/studies/S000EWGF00000085/recordSummary.
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Affiliation(s)
- Huai Heng Loh
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, 56000, Kuala Lumpur, Malaysia.
- Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, 93350, Kota Samarahan, Sarawak, Malaysia.
| | - Siow Phing Tay
- Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, 93350, Kota Samarahan, Sarawak, Malaysia
| | - Ai Jiun Koa
- Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, 93350, Kota Samarahan, Sarawak, Malaysia
| | - Mei Ching Yong
- Department of Medicine, Sarawak General Hospital, 93586, Kuching, Sarawak, Malaysia
| | - Asri Said
- Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, 93350, Kota Samarahan, Sarawak, Malaysia
| | - Chee Shee Chai
- Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, 93350, Kota Samarahan, Sarawak, Malaysia
| | | | - Anselm Ting Su
- Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, 93350, Kota Samarahan, Sarawak, Malaysia
| | - Bonnie Bao Chee Tang
- Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, 93350, Kota Samarahan, Sarawak, Malaysia
| | | | - Norlela Sukor
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, 56000, Kuala Lumpur, Malaysia
- Hospital Canselor Tuanku Muhriz, 56000, Kuala Lumpur, Malaysia
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Archontogeorgis K, Nena E, Steiropoulos P. Roles of vitamins and nutrition in obstructive sleep apnea. Expert Rev Respir Med 2025; 19:145-163. [PMID: 39891370 DOI: 10.1080/17476348.2025.2462192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 01/12/2025] [Accepted: 01/30/2025] [Indexed: 02/03/2025]
Abstract
INTRODUCTION Obstructive sleep apnea (OSA) is the most common sleep-related breathing disorder, with a prevalence that rises alongside with the increasing prevalence of obesity. OSA is characterized by a low-inflammatory state and is followed by cardiovascular and metabolic sequelae. Continuous positive airway pressure (CPAP) represents the cornerstone of treatment for severe OSA. However, poor compliance with CPAP treatment renders OSA treatment a challenging venture. Weight loss and exercise are recommended as adjunctive treatment options for OSA. Several diets have proven to facilitate weight loss, and to alleviate the inflammatory status in patients with OSA. Moreover, several vitamins exhibit antioxidant properties that beneficially affect OSA pathology and reduce the risk of cardiovascular complications. AREA COVERED This narrative review aims to summarize the current knowledge regarding the effect of nutrition and vitamin deficiencies on OSA. Included were publications, relevant to the topic, with different types of design (i.e. cross-sectional studies, cohort studies, clinical trials, systematic reviews, meta-analyses, etc.) and indexed in PubMed database until 31 March 2024. EXPERT OPINION In addition to weight loss, other food components, such as proteins, carbohydrates, anti-inflammatory agents, vitamins A, B, C, D, E, and sodium, may play a beneficial role in the incidence and severity of OSA.
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Affiliation(s)
- Kostas Archontogeorgis
- Department of Pneumonology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Evangelia Nena
- Laboratory of Social Medicine, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Paschalis Steiropoulos
- Department of Pneumonology, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
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Yao N, Ma C, Dou R, Shen C, Yuan Y, Li W, Qu J. Exploring the link between vitamin D deficiency and obstructive sleep apnea: A comprehensive review. J Sleep Res 2024; 33:e14166. [PMID: 38414320 DOI: 10.1111/jsr.14166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 01/20/2024] [Accepted: 01/23/2024] [Indexed: 02/29/2024]
Abstract
Despite the high prevalence and significant health burden of obstructive sleep apnea (OSA), its underlying pathophysiology remains incompletely understood. This comprehensive review explores the emerging connection between vitamin D deficiency and OSA, discusses potential mechanisms underlying this association, and explores the therapeutic implications of these findings. Recent research has consistently highlighted the high incidence of vitamin D deficiency among patients with OSA, which often occurs independently of geographical location. This suggests that factors beyond lack of sunlight exposure may be involved. This review also discusses how reduced vitamin D may be associated with more severe manifestations of OSA. In addition, it explores the potentiality of using vitamin D supplements as a therapeutic strategy for OSA, noting that some studies have found improvements in sleep quality and a reduction in OSA severity. Potential mechanisms are proposed, including the role of vitamin D deficiency in promoting inflammation, oxidative stress, hypoxia, impairing immune function, muscle function, and gene polymorphism of vitamin D receptors, all of which could contribute to the pathogenesis of obstructive sleep apnea. The paper underscores the need for future research to validate these observations, to determine optimal vitamin D supplementation dosage and duration, to explore potential side effects and risks, and to investigate potential interactions with other treatments.
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Affiliation(s)
- Nan Yao
- Department of General Surgery, Aerospace Center Hospital, Beijing, China
| | - Chenyuan Ma
- Department of Emergency, Gansu Provincial People's Hospital, Gansu, China
| | - Ruixue Dou
- Department of Ultrasound, Aerospace Center Hospital, Beijing, China
| | - Chao Shen
- Department of Gastrointestinal, Peking University International Hospital, Beijing, China
| | - Ye Yuan
- Department of Neurosurgery, People's Hospital of Chiping District, Liaocheng, China
| | - Wei Li
- Department of Gastrointestinal, Peking University International Hospital, Beijing, China
| | - Jun Qu
- Department of General Surgery, Aerospace Center Hospital, Beijing, China
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Schiza S, Bouloukaki I, Kaditis A, Lombardi C, Bonsignore MR. Vitamin D deficiency: A forgotten aspect in sleep disorders? A critical update. Sleep Med 2024; 121:77-84. [PMID: 38941960 DOI: 10.1016/j.sleep.2024.06.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 05/28/2024] [Accepted: 06/23/2024] [Indexed: 06/30/2024]
Abstract
Over the past few years, there has been a surge in interest regarding the connection between sleep duration and quality, sleep disorders, mainly Obstructive sleep apnoea (OSA) and Vitamin D. There is growing evidence to support a new role of Vitamin D in the maintenance and regulation of optimal sleep. Furthermore, a notable link has been identified between OSA and a decrease in serum Vitamin D levels, which appears to intensify as the severity of sleep apnea worsens. Vitamin D status could also potentially serve as a mediator or provide an explanation for the association between OSA and cardiometabolic morbidity, but the current state of research in this area is inadequate. Studies have indicated that the supplementation of Vitamin D can optimize sleep quality, presenting more proof of the connection between insufficient vitamin D levels and sleep disorders. However, it is unclear whether low serum Vitamin D levels are a contributing factor to OSA development or if OSA predisposes individuals to Vitamin D deficiency. As a result, various studies have endeavored to examine the complex relationship between OSA and Vitamin D deficiency. In children and adolescents, while data is limited, there seems also to be a link between sleep disorders and Vitamin D levels. Therefore, the objective of this review is to provide a comprehensive overview of the current evidence on the association between Vitamin D and sleep disorders in both adults and children.
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Affiliation(s)
- Sophia Schiza
- Sleep Disorders Center, Department of Respiratory Medicine, School of Medicine, University of Crete, Heraklion, Greece.
| | - Izolde Bouloukaki
- Sleep Disorders Center, Department of Respiratory Medicine, School of Medicine, University of Crete, Heraklion, Greece
| | - Athanasios Kaditis
- Division of Pediatric Pulmonology and Cystic Fibrosis Center, Department of Child Health, University of Missouri School of Medicine, MUHC Children's Hospital, Columbia, MO, USA; Child Health Research Institute, University of Missouri School of Medicine, Columbia, MO, USA
| | - Carolina Lombardi
- Istituto Auxologico Italiano, IRCCS, Department of Cardiovascular, Neural and Metabolic Sciences, St. Luke Hospital, Milan, Italy
| | - Maria R Bonsignore
- Division of Respiratory Medicine, PROMISE Dept, University of Palermo, Palermo, Italy; IBIM CNR, Palermo, Italy
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Loh HH, Sukor N. Obstructive sleep apnea and vitamin D level: Has the dust settled? THE CLINICAL RESPIRATORY JOURNAL 2024; 18:e13593. [PMID: 36746181 DOI: 10.1111/crj.13593] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/08/2023] [Accepted: 01/25/2023] [Indexed: 02/08/2023]
Abstract
Obstructive sleep apnea and vitamin D deficiency are associated with multiple complications with increased morbidity and mortality. However, the relationship between these two entities remains unclear, with clinical studies demonstrating contradictory results. This narrative review aims to present the current evidence and understanding of this relationship and discuss the possible mechanisms linking these two disease entities. Finally, we summarize and propose areas of opportunity for future research.
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Affiliation(s)
- Huai Heng Loh
- Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, Kota Samarahan, Sarawak, Malaysia
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Center (UKMMC), Kuala Lumpur, Malaysia
| | - Norlela Sukor
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Center (UKMMC), Kuala Lumpur, Malaysia
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Loh HH, Lim QH, Kang WH, Yee A, Yong MC, Sukor N. Obstructive sleep apnea and vitamin D: an updated systematic review and meta-analysis. Hormones (Athens) 2023; 22:563-580. [PMID: 37704922 DOI: 10.1007/s42000-023-00481-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 08/28/2023] [Indexed: 09/15/2023]
Abstract
PURPOSE : Obstructive sleep apnea (OSA) is a chronic, sleep-related breathing disorder which leads to increased cardiovascular risks. Vitamin D deficiency is associated with various cardiometabolic complications, including increased cardiovascular morbidity and mortality. We aimed to analyze the difference in serum 25-hydroxyvitamin D (25-OHD) level, prevalence of vitamin D insufficiency and deficiency, and the effect of CPAP treatment on serum 25-OHD levels among adult patients with OSA. METHODS We pooled data from 18 observational studies involving 5592 individuals. Baseline parameters that might have contributed to the significant differences observed were also analyzed. RESULTS Patients with OSA had significantly lower serum 25-OHD levels (pooled d + - 0.74 [95% CI: - 1.19 to - 0.28], p < 0.01) and higher prevalence of vitamin D deficiency (pooled log (odds ratio) 0.98 [95% CI: 0.30 to 1.67], p < 0.01) compared to those without OSA. Subgroup analysis demonstrated that these differences were significant only in moderate OSA and severe OSA. Neither age nor BMI nor geographical latitude contributed significantly to the differences observed in serum 25-OHD levels. The use of CPAP did not lead to significant changes in serum 25-OHD levels. CONCLUSION Patients with OSA have lower serum 25-OHD levels with a higher prevalence of vitamin D deficiency, regardless of age or BMI, pointing to an independent association between vitamin D and OSA.
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Affiliation(s)
- Huai Heng Loh
- Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak (UNIMAS), Jalan Datuk Mohammad Musa, 94300, Kota Samarahan, Sarawak, Malaysia.
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia.
| | - Quan Hziung Lim
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Waye Hann Kang
- Department of Medicine, M. Kandiah Faculty of Medicine and Health Sciences, Universiti Tunku Abdul Rahman, Kajang, Malaysia
| | - Anne Yee
- Department of Psychological Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Mei Ching Yong
- Department of Medicine, Sarawak General Hospital, Kuching, Sarawak, Malaysia
| | - Norlela Sukor
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
- Hospital Canselor Tuanku Muhriz, Kuala Lumpur, Malaysia
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Georgoulis M, Kontogianni MD, Kechribari I, Tenta R, Fragopoulou E, Lamprou K, Perraki E, Vagiakis E, Yiannakouris N. Associations between serum vitamin D status and the cardiometabolic profile of patients with obstructive sleep apnea. Hormones (Athens) 2023; 22:477-490. [PMID: 37322405 PMCID: PMC10449975 DOI: 10.1007/s42000-023-00456-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 05/26/2023] [Indexed: 06/17/2023]
Abstract
PURPOSE Obstructive sleep apnea (OSA) and the metabolic syndrome (MetS) frequently coexist. Low serum vitamin D has been positively associated with OSA presence and severity; however, data on its link to cardiometabolic features in patients with OSA remain scarce. We aimed to assess serum 25-hydroxyvitamin D [25(OH)D] and explore its association with cardiometabolic parameters in OSA. METHODS This was a cross-sectional study among 262 patients (49 ± 9 years old, 73% men) with polysomnography-diagnosed OSA. Participants were evaluated in terms of anthropometric indices, lifestyle habits, blood pressure, biochemical, plasma inflammatory and urinary oxidative stress markers, and the presence of MetS. Serum 25(OH)D was assessed by chemiluminescence, and vitamin D deficiency (VDD) was defined as 25(OH)D < 20 ng/mL. RESULTS Median (1st, 3rd quartile) serum 25(OH)D levels were 17.7 (13.4, 22.9) ng/mL and 63% of participants had VDD. Serum 25(OH)D correlated negatively with body mass index (BMI), homeostasis model of assessment of insulin resistance (HOMA-IR), total cholesterol, low-density lipoprotein cholesterol, triglycerides, high-sensitivity C-reactive protein (hsCRP), and urinary oxidized guanine species (oxG), and positively with high-density lipoprotein cholesterol (all P < 0.050). In logistic regression analysis, serum 25(OH)D was associated with lower odds of MetS [odds ratio (95% confidence interval): 0.94 (0.90-0.98)], after adjustment for age, sex, season of blood sampling, Mediterranean diet score, physical activity, smoking, apnea-hypopnea index, HOMA-IR, hsCRP, and oxG. In the same multivariate model, VDD was associated with ~ twofold greater odds of MetS [2.39 (1.15, 4.97)]. CONCLUSION VDD is highly prevalent and is associated with a detrimental cardiometabolic profile among patients with OSA.
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Affiliation(s)
- Michael Georgoulis
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University of Athens, 70 El. Venizelou Str, 17676, Athens, Greece
| | - Meropi D Kontogianni
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University of Athens, 70 El. Venizelou Str, 17676, Athens, Greece
| | - Ioanna Kechribari
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University of Athens, 70 El. Venizelou Str, 17676, Athens, Greece
| | - Roxane Tenta
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University of Athens, 70 El. Venizelou Str, 17676, Athens, Greece
| | - Elizabeth Fragopoulou
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University of Athens, 70 El. Venizelou Str, 17676, Athens, Greece
| | - Kallirroi Lamprou
- Center of Sleep Disorders, Evangelismos General Hospital, 1st Department of Critical Care and Pulmonary Services, Medical School, National and Kapodistrian University of Athens, 10676, Athens, Greece
| | - Eleni Perraki
- Center of Sleep Disorders, Evangelismos General Hospital, 1st Department of Critical Care and Pulmonary Services, Medical School, National and Kapodistrian University of Athens, 10676, Athens, Greece
| | - Emmanouil Vagiakis
- Center of Sleep Disorders, Evangelismos General Hospital, 1st Department of Critical Care and Pulmonary Services, Medical School, National and Kapodistrian University of Athens, 10676, Athens, Greece
| | - Nikos Yiannakouris
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University of Athens, 70 El. Venizelou Str, 17676, Athens, Greece.
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The treatment of sleep dysfunction to improve cognitive function: A meta-analysis of randomized controlled trials. Sleep Med 2023; 101:118-126. [PMID: 36370516 DOI: 10.1016/j.sleep.2022.10.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 10/12/2022] [Accepted: 10/22/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE This meta-analysis of randomized controlled trials (RCTs) evaluates if treating sleep disturbances improves cognitive function over at least 12 weeks. METHODS Multiple data sources were searched until November 1, 2021. RCTs were included if they examined the effect of an intervention (behavioral or medical) on sleep and cognition in an adult sample with sleep disturbances and had an intervention duration and follow-up of at least 12 weeks. Two independent reviewers located 3784 studies; 16 satisfied the inclusion criteria. Primary outcomes included the broad cognitive domains of visual processing, short-term memory, long-term storage and retrieval, processing speed, and reaction time. RESULTS Most trials were conducted in participants with obstructive sleep apnea (OSA; N = 13); the most studied intervention was continuous positive airway pressure (CPAP; N = 10). All RCTs were 12 months in duration or less. The estimates of mean pooled effects were not indicative of significant treatment effect for any primary outcome. Although the interventions reduced daytime sleepiness (Hedge's g, 0.51; 95% confidence interval, 0.29-0.74; p < 0.01), this did not lead to cognitive enhancement. CONCLUSIONS Overall, there was insufficient evidence to suggest that treating sleep dysfunction can improve cognition. Further studies with longer follow-up duration and supporting biomarkers are needed.
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Abboud M. Vitamin D Supplementation and Sleep: A Systematic Review and Meta-Analysis of Intervention Studies. Nutrients 2022; 14:1076. [PMID: 35268051 PMCID: PMC8912284 DOI: 10.3390/nu14051076] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/28/2022] [Accepted: 03/01/2022] [Indexed: 02/04/2023] Open
Abstract
Background: Vitamin D deficiency is associated with sleep disorders and poor sleep quality. Whether vitamin D supplementation (VDS) helps resolve these problems remains unclear. Objective: To systematically review the effect of VDS on sleep quantity, quality, and disorders, and perform a meta-analysis of available data. Methods: The reporting of this review followed the PRISMA statement. VDS human interventions studies that reported on sleep quality, quantity, or disorders were included. Medline, CINAHL, EMBASE, PsycInfo, the Cochrane Library, Clinicaltrials.gov, and the ICTRP were searched, in addition to the references of the included articles and previous relevant reviews, without language or time restrictions. Included studies were critically appraised, findings were narratively synthesized, and a meta-analysis was conducted. Furthermore, the overall certainty of the evidence was assessed. Results: A total of 19 studies were included (13 randomized controlled trials (RCTs), 1 opportunistic addition to an RCT, 4 pre−post studies, and 1 pre−post study analyzed as a case series); 3 RCTs were meta-analyses. The risk of bias was generally low. Pre−post studies showed a significant improvement in sleep quality with VDS. Similarly, the results of the meta-analysis revealed a statistically significant decrease in the Pittsburgh Sleep Quality Index with VDS compared with placebo (mean difference, −2.33 (95% CI, −3.09, −1.57); p < 0.001; I2 = 0%), with a moderate certainty of evidence. The results regarding the effect of VDS on sleep-related impairment, difficulty, and disorders, as well as sleepiness and restless legs syndrome, were not unanimous. Conclusions: VDS is promising in improving sleep quality; however, its effect on sleep quantity and disorders needs to be further investigated.
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Affiliation(s)
- Myriam Abboud
- Department of Health Sciences, College of Natural and Health Sciences, Zayed University, Dubai, United Arab Emirates
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Rajabi-Naeeni M, Dolatian M, Qorbani M, Vaezi AA. Effect of omega-3 and vitamin D co-supplementation on psychological distress in reproductive-aged women with pre-diabetes and hypovitaminosis D: A randomized controlled trial. Brain Behav 2021; 11:e2342. [PMID: 34473420 PMCID: PMC8613419 DOI: 10.1002/brb3.2342] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/13/2021] [Accepted: 08/16/2021] [Indexed: 11/29/2022] Open
Abstract
PURPOSE Psychological distresses and pre-diabetes are among the risk factors of developing type-II diabetes. The present study was conducted to determine the effectiveness of omega-3 and vitamin D co-supplementation on psychological distresses in women of reproductive age with pre-diabetes and hypovitaminosis D. METHODS The present factorial clinical trial was conducted on 168 women of reproductive age with pre-diabetes and hypovitaminosis D. These participants were selected by stratified random sampling and were assigned to four groups for 8 weeks: group 1 (placebo group), group 2 (omega-3 group), group 3 (vitamin D group), and group 4 (co-supplement group). The medication and placebo doses being two 1000-mg tablets each day for omega-3 and 50,000-IU pearls every 2 weeks for vitamin D. Fasting blood glucose and vitamin D were measured at the beginning of the study. The Depression Anxiety Stress Scale-21 and the Pittsburgh Sleep Quality Index were completed by the participants at the start and end of the intervention. RESULTS A significant difference was observed in terms of reduction in anxiety and improvement in sleep quality in the co-supplementation compared to the other three groups (p < .05). There was also a significant difference between the group receiving both supplements and the group receiving only placebos in terms of reduction in depression and stress (p < .05). CONCLUSION Vitamin D and omega-3 co-supplementation improved depression, anxiety, and sleep quality in women of reproductive age with pre-diabetes and hypovitaminosis D. Therefore, these two supplements can be recommended for improving the mental health of this group of women. CLINICAL TRIAL REGISTRY Iranian Registry of Clinical Trials Code: IRCT20100130003226N17. Registered on February 9, 2019.
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Affiliation(s)
- Masoumeh Rajabi-Naeeni
- Department of Midwifery and Reproductive Health, Student Research Committee, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahrokh Dolatian
- Midwifery and Reproductive Health Research Center, Department of Midwifery and Reproductive Health, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mostafa Qorbani
- Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran.,Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Abbas Vaezi
- Department of Internal Medicine, School of Medicine Alborz University of Medical Sciences, Karaj, Iran
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Detopoulou P, Demopoulos CA, Antonopoulou S. Micronutrients, Phytochemicals and Mediterranean Diet: A Potential Protective Role against COVID-19 through Modulation of PAF Actions and Metabolism. Nutrients 2021; 13:nu13020462. [PMID: 33573169 PMCID: PMC7911163 DOI: 10.3390/nu13020462] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/23/2021] [Accepted: 01/26/2021] [Indexed: 01/08/2023] Open
Abstract
The new coronavirus disease 2019 (COVID-19) pandemic is an emerging situation with high rates of morbidity and mortality, in the pathophysiology of which inflammation and thrombosis are implicated. The disease is directly connected to the nutritional status of patients and a well-balanced diet is recommended by official sources. Recently, the role of platelet activating factor (PAF) was suggested in the pathogenesis of COVID-19. In the present review several micronutrients (vitamin A, vitamin C, vitamin E, vitamin D, selenium, omega-3 fatty acids, and minerals), phytochemicals and Mediterranean diet compounds with potential anti-COVID activity are presented. We further underline that the well-known anti-inflammatory and anti-thrombotic actions of the investigated nutrients and/or holistic dietary schemes, such as the Mediterranean diet, are also mediated through PAF. In conclusion, there is no single food to prevent coronavirus Although the relationship between PAF and COVID-19 is not robust, a healthy diet containing PAF inhibitors may target both inflammation and thrombosis and prevent the deleterious effects of COVID-19. The next step is the experimental confirmation or not of the PAF-COVID-19 hypothesis.
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Affiliation(s)
- Paraskevi Detopoulou
- Department of Clinical Nutrition, General Hospital Korgialenio Benakio, 11526 Athens, Greece;
| | - Constantinos A. Demopoulos
- Laboratory of Biochemistry, Faculty of Chemistry, National & Kapodistrian University of Athens, 16121 Athens, Greece;
| | - Smaragdi Antonopoulou
- Laboratory of Biology, Biochemistry and Microbiology, Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, 70 El. Venizelou Street, 17671 Athens, Greece
- Correspondence: ; Tel.: +30-210-954-9230; Fax: +30-210-957-7050
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Li X, He J, Yun J. The association between serum vitamin D and obstructive sleep apnea: an updated meta-analysis. Respir Res 2020; 21:294. [PMID: 33167989 PMCID: PMC7653837 DOI: 10.1186/s12931-020-01554-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 10/21/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The objective was to determine whether OSA patients have a low serum vitamin D level by systematic review and meta-analysis. METHODS This study searched the following electronic bibliographic databases: Embase, Medline, Web of Science, PubMed, VIP, Wanfang, CNKI and SinoMed. All data were searched between January 2000 and August 2020. The quality of the included studies was estimated by two researchers according to the Newcastle-Ottawa Scale and Agency for Healthcare Research and Quality. All qualified studies and statistical analyses were conducted using RevMan 5.2. RESULTS Twenty-nine eligible studies compromising 6717 participants met the inclusion criteria of the meta-analysis. The results revealed that the serum 25(OH)D level was significantly lower in OSA patients than the controls. According to the severity of the disease, subgroup analysis was performed; the results demonstrated that the serum 25(OH)D level was not decreased in mild OSA patients compared with the controls, while the serum 25(OH)D level in moderate and severe OSA patients was lower than that in the controls. Furthermore, based on ethnicity, BMI, PSG type, study quality and latitude, the subjects were divided into different subgroups for meta-analysis. The results revealed that the serum 25(OH)D level in all OSA subgroups was decreased compared with that in the control group. CONCLUSIONS The present meta-analysis shows that the serum vitamin D level was different between OSA patients and healthy people. OSA patients could have a low serum vitamin D level.
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Affiliation(s)
- Xiaoyan Li
- Department of Endocrinology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, 610500, Sichuan, China
| | - Jie He
- Department of Respiratory and Critical Care Medicine, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Street, Chengdu, 610500, Sichuan, China.
| | - Jie Yun
- Nursing Department of Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan, China
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Schöttker B, Kuznia S, Laetsch DC, Czock D, Kopp-Schneider A, Caspari R, Brenner H. Protocol of the VICTORIA study: personalized vitamin D supplementation for reducing or preventing fatigue and enhancing quality of life of patients with colorectal tumor - randomized intervention trial. BMC Cancer 2020; 20:739. [PMID: 32770972 PMCID: PMC7414549 DOI: 10.1186/s12885-020-07219-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 07/26/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Cancer-related fatigue represents one major cause of reduced quality of life in cancer patients and can seriously affect the physical, emotional, and cognitive functioning impeding coping with the disease. Options for effective treatment of cancer-related fatigue are limited, consisting only of non-pharmacologic interventions like physical activity, psychosocial, and mind-body interventions. Recent evidence suggests that vitamin D3 supplementation might alleviate cancer-related fatigue. However, confirmation in a randomized controlled trial is needed. METHODS In this multicenter, randomized, double-blind, placebo-controlled trial, 456 colorectal cancer (CRC) patients aged 18 years and older are being recruited in three German rehabilitation clinics. Study inclusion requires hospitalization of at least 3 weeks at such a clinic, a diagnosis of non-metastatic CRC (stage I-III), surgical removal of the tumor within the past 9 months, and season-adapted vitamin D insufficiency or deficiency. Eligible patients are randomly assigned to a personalized regimen of vitamin D3 or placebo for 12 weeks. In the intervention group, a loading dose of 20,000 or 40,000 IU vitamin D3 will be administered daily during the first 11 days, followed by a maintenance dose of 2000 IU daily. Patients will complete questionnaires for secondary outcomes (fatigue subdomains, quality of life and subdomains, depression, functional well-being, and infection frequency). Blood and urine samples will be collected for analyses of safety parameters (hypervitaminosis D, hypercalcemia, hypercalciuria, and renal impairment) and efficacy biomarkers (25-hydroxyvitamin D, HbA1c, white blood cell count, leukocyte subtype counts, serum C-reactive protein, uric acid, creatinine, triglycerides, total, low- and high-density lipoprotein cholesterol). DISCUSSION This trial tests whether a personalized vitamin D3 dosing regimen reduces or prevents fatigue among non-metastatic CRC patients by treating the underlying vitamin D deficiency/insufficiency. If efficacy can be confirmed, personalized vitamin D3 supplementation could be used as a tertiary prevention measure in addition to non-pharmacological treatments of cancer-related fatigue in CRC patients. We expect to detect an effect of vitamin D3 supplementation on secondary outcomes like quality of life, depression, functional well-being, infections, inflammatory biomarkers, diabetes mellitus, and dyslipidemia. TRIAL REGISTRATION European Clinical Trials Database: EudraCT-No: 2019-000502-30, January 21, 2019; German Clinical Trials Register (DRKS): DRKS00019907 , April 30, 2019.
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Affiliation(s)
- Ben Schöttker
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
- Network Aging Research, University of Heidelberg, Bergheimer Straße 20, 69115 Heidelberg, Germany
| | - Sabine Kuznia
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
| | - Dana Clarissa Laetsch
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
| | - David Czock
- Department of Clinical Pharmacology and Pharmacoepidemiology, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany
| | - Annette Kopp-Schneider
- Division of Biostatistics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
| | - Reiner Caspari
- Rehabilitation Clinic Niederrhein, Hochstraße 13-19, 53474 Bad Neuenahr-Ahrweiler, Germany
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
- Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), Im Neuenheimer Feld 460, 69120 Heidelberg, Germany
- German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
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15
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Sleep duration is associated with vitamin D deficiency in older women living in Macao, China: A pilot cross-sectional study. PLoS One 2020; 15:e0229642. [PMID: 32130235 PMCID: PMC7055896 DOI: 10.1371/journal.pone.0229642] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 02/11/2020] [Indexed: 01/21/2023] Open
Abstract
Chinese women are known to have both a high prevalence of metabolic syndrome (MetS) and vitamin D deficiency (serum 25-hydroxyvitamin D (25OHD) <50 nmol/l). Associations between sleep duration and circulating 25OHD have recently been reported but, to our knowledge, these associations have not been studied in older Chinese populations. We thus investigated whether sleep duration was associated with vitamin D status in a population from Macao, China, and whether sleep duration modified the association between MetS and vitamin D deficiency. In 207 older (>55 years) Macanese, anthropometry, blood samples and validated questionnaires, including sleep duration and cardiovascular risk factors, were simultaneously collected. On multivariable categorical analyses, those women, not men, who had short sleep duration (≤6 hours (h)) were at a 2-fold risk for vitamin D deficiency (both <50 nmol/L and <37 nmol/L; OR = 1.94, 95%CI 1.29–2.92; OR = 2.05, 95%CI 1.06–3.98, respectively) and those who had longer sleep duration (>8 h) were 3-fold more likely to have vitamin D deficiency (OR = 3.07, 95%CI 1.47–6.39; OR = 2.75, 95%CI 1.08–7.00, respectively) compared to those with normal sleep duration (6–8 h). Both women and men with MetS were 2-fold more likely to have vitamin D deficiency (women: OR = 2.04, 95%CI 1.31–3.17; OR = 2.15, 95%CI 1.11–4.17, respectively; men: OR = 2.01, 95%CI 1.23–3.28; OR = 2.04, 95%CI 1.00–4.29, respectively). Moreover, women with both short sleep duration and MetS had an increased risk of vitamin D deficiency (OR = 3.26, 95%CI 1.10–9.64). These associations were not found in those with longer sleep. Men with longer sleep and MetS had a 5-fold risk of vitamin D deficiency (OR = 5.22; 95%CI 2.70–10.12). This association was non-significant for men with shorter sleep. We conclude that both short and long sleep duration were associated with vitamin D deficiency in older Chinese women. Further research is needed in larger cohorts or with intervention studies to further examine the associations between reduced sleep, metabolic syndrome and vitamin D deficiency.
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16
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Jamilian M, Amirani E, Asemi Z. The effects of vitamin D and probiotic co-supplementation on glucose homeostasis, inflammation, oxidative stress and pregnancy outcomes in gestational diabetes: A randomized, double-blind, placebo-controlled trial. Clin Nutr 2019; 38:2098-2105. [DOI: 10.1016/j.clnu.2018.10.028] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 10/24/2018] [Accepted: 10/31/2018] [Indexed: 12/17/2022]
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17
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Makariou SE, Elisaf M, Challa A, Tellis CC, Tselepis AD, Liberopoulos EN. No effect of vitamin D administration plus dietary intervention on emerging cardiovascular risk factors in patients with metabolic syndrome. JOURNAL OF NUTRITION & INTERMEDIARY METABOLISM 2019. [DOI: 10.1016/j.jnim.2019.100093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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18
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A systematic review and meta-analysis of the response of serum 25-hydroxyvitamin D concentration to vitamin D supplementation from RCTs from around the globe. Eur J Clin Nutr 2019; 73:816-834. [PMID: 30872787 DOI: 10.1038/s41430-019-0417-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 02/10/2019] [Accepted: 02/18/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND/OBJECTIVES Optimal doses of vitamin D (VitD) supplement in different populations are unclear. We aim to evaluate the relationship between VitD supplementation and post-intervention serum 25-hydroxyvitamin D [25(OH)D] concentration, to provide a recommended dosage of VitD for achieving an optimal 25(OH)D concentration for different populations. SUBJECTS/METHODS Literature search was conducted in Embase, etc. Randomized controlled trials about VitD supplemental intakes and their effect on 25(OH)D concentration were enrolled. The effect on 25(OH)D concentration between different supplementation doses in each population group was compared by meta-analysis. Multivariate meta-regression model is utilized to establish reference intake dosage of VitD. RESULTS A total of 136 articles were included about children (3-17 years), adults (18-64 years), postmenopausal women, the elderly ( >64 years), pregnant, or lactating women. Overall, intervention groups obtained higher 25(OH)D concentration than controls and there was obvious dose-response effect between intake dose and 25(OH)D concentration. Baseline 25(OH)D concentration and age were significant indicators for 25(OH)D concentration. To reach sufficient 25(OH)D concentration (75 nmol/L), the recommended VitD supplemental intakes was 1340 and 2250 IU/day for children and pregnant women, 2519 and 797 IU/day for European adults aged 18-64 and 65-85 years, 729, 2026, and 1229 IU/day for adults in North America, Asia and Middle East and Africa, respectively. CONCLUSIONS Regional- and age-specific recommended dosages of VitD supplements for population to achieve optimal 25(OH)D concentrations have been suggested.
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Archontogeorgis K, Nena E, Papanas N, Steiropoulos P. The role of vitamin D in obstructive sleep apnoea syndrome. Breathe (Sheff) 2018; 14:206-215. [PMID: 30186518 PMCID: PMC6118887 DOI: 10.1183/20734735.000618] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Obstructive sleep apnoea syndrome (OSAS) is a common disorder of multifactorial pathogenesis and is associated with obesity, diabetes and cardiovascular disease. Vitamin D is a fat-soluble vitamin with an important function in calcium absorption and homeostasis, which is also implicated in several nonskeletal conditions. The prevalence of vitamin D deficiency is increasing worldwide and is associated with similar metabolic disturbances to OSAS. Moreover, recent data suggest that in OSAS patients serum levels of vitamin D are lower compared with non-apnoeic subjects. However, the mechanisms linking vitamin D deficiency and OSAS are not completely understood and several hypotheses have been advanced. To date, a limited number of studies have assessed the association between lower serum concentrations of vitamin D and OSAS, and have reported inconsistent results. Similarly, contradictory results have been produced by studies which evaluated the effect of continuous positive airway pressure treatment on serum vitamin D levels. The aim of this review is to summarise current knowledge on the association between OSAS and vitamin D levels. Due to multiple confounding factors, vitamin D deficiency is common among sleep apnoea patients; thus, screening should be performed when clinically indicatedhttp://ow.ly/L3ow30krmol
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Affiliation(s)
- Kostas Archontogeorgis
- M.Sc. Program "Sleep Medicine", Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Evangelia Nena
- Laboratory of Hygiene and Environmental Protection, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Nikolaos Papanas
- Second Dept of Internal Medicine, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Paschalis Steiropoulos
- M.Sc. Program "Sleep Medicine", Medical School, Democritus University of Thrace, Alexandroupolis, Greece
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20
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Neighbors CLP, Noller MW, Song SA, Zaghi S, Neighbors J, Feldman D, Kushida CA, Camacho M. Vitamin D and obstructive sleep apnea: a systematic review and meta-analysis. Sleep Med 2018; 43:100-108. [DOI: 10.1016/j.sleep.2017.10.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 10/29/2017] [Accepted: 10/31/2017] [Indexed: 12/19/2022]
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21
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Theorell-Haglöw J, Hoyos CM, Phillips CL, Yee BJ, Herrmann M, Brennan-Speranza TC, Grunstein RR, Liu PY. Changes of vitamin D levels and bone turnover markers after CPAP therapy: a randomized sham-controlled trial. J Sleep Res 2017; 27:e12606. [PMID: 28944524 DOI: 10.1111/jsr.12606] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 08/11/2017] [Indexed: 01/15/2023]
Abstract
The aim was to investigate whether continuous positive airway pressure treatment could modulate serum vitamin D (25-hydroxyvitamin D) and bone turnover markers (collagen-type 1 cross-linked C-telopeptide, osteocalcin and N-terminal propeptide of type 1 collagen) in secondary analysis from a randomized controlled trial. Sixty-five continuous positive airway pressure-naïve male patients with obstructive sleep apnea (age = 49 ± 12 years, apnea-hypopnea index = 39.9 ± 17.7 events h-1 , body mass index = 31.3 ± 5.2 kg m-2 ) were randomized to receive either real (n = 34) or sham (n = 31) continuous positive airway pressure for 12 weeks. At 12 weeks, all participants received real continuous positive airway pressure for an additional 12 weeks. After 12 weeks of continuous positive airway pressure (real versus sham), there were no between-group differences for any of the main outcomes [Δ25-hydroxyvitamin D: -0.80 ± 5.28 ng mL-1 (mean ± SE) versus 3.08 ± 3.66 ng mL-1 , P = 0.42; Δcollagen-type 1 cross-linked C-telopeptide: 0.011 ± 0.014 ng mL-1 versus -0.004 ± 0.009 ng mL-1 , P = 0.48; Δosteocalcin: 1.13 ± 1.12 ng mL-1 versus 0.46 ± 0.75 ng mL-1 , P = 0.80; ΔN-terminal propeptide of type 1 collagen: 2.07 ± 3.05 μg L-1 versus -1.05 ± 2.13 μg L-1 , P = 0.48]. There were no further differences in subgroup analyses (continuous positive airway pressure-compliant patients, patients with severe obstructive sleep apnea or sleepy patients). However, after 24 weeks irrespective of initial randomization, vitamin D increased in patients with severe obstructive sleep apnea (9.56 ± 5.51 ng mL-1 , P = 0.045) and in sleepy patients (14.0 ± 4.69 ng mL-1 , P = 0.007). Also, there was a significant increase in osteocalcin at 24 weeks (3.27 ± 1.06 ng mL-1 , P = 0.01) in compliant patients. We conclude that 12 weeks of continuous positive airway pressure did not modulate vitamin D or modulate any of the bone turnover markers compared with sham. However, it is plausible that continuous positive airway pressure may have late beneficial effects on vitamin D levels and bone turnover markers in selected groups of patients with obstructive sleep apnea.
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Affiliation(s)
- Jenny Theorell-Haglöw
- Sleep and Circadian Research Group, NHMRC Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW, Australia.,Department of Medical Sciences, Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
| | - Camilla M Hoyos
- Sleep and Circadian Research Group, NHMRC Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW, Australia
| | - Craig L Phillips
- Sleep and Circadian Research Group, NHMRC Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW, Australia
| | - Brendon J Yee
- Sleep and Circadian Research Group, NHMRC Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW, Australia
| | - Markus Herrmann
- Department of Clinical Pathology, Bolzano Hospital, Bolzano, Italy
| | - Tara C Brennan-Speranza
- Department of Physiology, Bosch Institute for Medical Research, University of Sydney, Sydney, NSW, Australia
| | - Ronald R Grunstein
- Sleep and Circadian Research Group, NHMRC Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, University of Sydney, Glebe, NSW, Australia
| | - Peter Y Liu
- Division of Endocrinology Department of Medicine, David Geffen School of Medicine at UCLA, Harbor-UCLA Medical Center and Los Angeles Biomedical Research Institute, Torrance, CA, USA
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22
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de Oliveira DL, Hirotsu C, Tufik S, Andersen ML. The interfaces between vitamin D, sleep and pain. J Endocrinol 2017; 234:R23-R36. [PMID: 28536294 DOI: 10.1530/joe-16-0514] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 04/21/2017] [Indexed: 12/20/2022]
Abstract
The role of vitamin D in osteomineral metabolism is well known. Several studies have suggested its action on different biological mechanisms, such as nociceptive sensitivity and sleep-wake cycle modulation. Sleep is an important biological process regulated by different regions of the central nervous system, mainly the hypothalamus, in combination with several neurotransmitters. Pain, which can be classified as nociceptive, neuropathic and psychological, is regulated by both the central and peripheral nervous systems. In the peripheral nervous system, the immune system participates in the inflammatory process that contributes to hyperalgesia. Sleep deprivation is an important condition related to hyperalgesia, and recently it has also been associated with vitamin D. Poor sleep efficiency and sleep disorders have been shown to have an important role in hyperalgesia, and be associated with different vitamin D values. Vitamin D has been inversely correlated with painful manifestations, such as fibromyalgia and rheumatic diseases. Studies have demonstrated a possible action of vitamin D in the regulatory mechanisms of both sleep and pain. The supplementation of vitamin D associated with good sleep hygiene may have a therapeutic role, not only in sleep disorders but also in the prevention and treatment of chronic pain conditions.
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Affiliation(s)
| | - Camila Hirotsu
- Department of PsychobiologyUniversidade Federal de São Paulo, São Paulo, Brazil
| | - Sergio Tufik
- Department of PsychobiologyUniversidade Federal de São Paulo, São Paulo, Brazil
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