1
|
Imes CC, Tucker SJ, Trinkoff AM, Chasens ER, Weinstein SM, Dunbar-Jacob J, Patrician PA, Redeker NS, Baldwin CM. Wake-up Call: Night Shifts Adversely Affect Nurse Health and Retention, Patient and Public Safety, and Costs. Nurs Adm Q 2023; 47:E38-E53. [PMID: 37643236 DOI: 10.1097/naq.0000000000000595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
The purpose of this mini review is to (1) summarize the findings on the impact of night shift on nurses' health and wellness, patient and public safety, and implications on organizational costs and (2) provide strategies to promote night shift nurses' health and improve organizational costs. The night shift, compared with day shift, results in poorer physical and mental health through its adverse effects on sleep, circadian rhythms, and dietary and beverage consumption, along with impaired cognitive function that increases nurse errors. Nurse administrators and health care organizations have opportunities to improve nurse and patient safety on night shifts. Low-, moderate-, and higher-cost measures that promote night nurses' health and well-being can help mitigate these negative outcomes. The provided individual and organizational recommendations and innovations support night shift nurses' health, patient and public safety, and organizational success.
Collapse
Affiliation(s)
- Christopher C Imes
- School of Nursing, University of Pittsburgh, Pittsburgh, Pennsylvania (Drs Imes, Chasens, and Dunbar-Jacob); College of Nursing, The Ohio State University, Columbus (Dr Tucker); School of Nursing, University of Maryland, Baltimore (Dr Trinkoff); School of Nursing, Purdue University Global, West Lafayette, Indiana (Ms Weinstein); School of Nursing, The University of Alabama at Birmingham (Dr Patrician); School of Nursing, University of Connecticut, Storrs (Dr Redeker); and Edson College of Nursing and Health Innovation, Arizona State University, Phoenix (Dr Baldwin)
| | | | | | | | | | | | | | | | | |
Collapse
|
2
|
The Mechanisms of the Potential Probiotic Lactiplantibacillus plantarum against Cardiovascular Disease and the Recent Developments in its Fermented Foods. Foods 2022; 11:foods11172549. [PMID: 36076735 PMCID: PMC9455256 DOI: 10.3390/foods11172549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/12/2022] [Accepted: 08/18/2022] [Indexed: 11/17/2022] Open
Abstract
Cardiovascular disease (CVD) has become the leading cause of death worldwide. Many recent studies have pointed out that Lactiplantibacillus plantarum (Lb. plantarum) has great potential in reducing the risk of CVD. Lb. plantarum is a kind of lactic acid bacteria (LAB) widely distributed in fermented food and the human intestinal tract, some strains of which have important effects on human health and the potential to be developed into probiotics. In this review, we summarize the mechanism of potential probiotic strains of Lb. plantarum against CVD. It could regulate the body’s metabolism at the molecular, cellular, and population levels, thereby lowering blood glucose and blood lipids, regulating blood pressure, and ultimately reducing the incidence of CVD. Furthermore, since Lb. plantarum is widely utilized in food industry, we highlight some of the most important new developments in fermented food for combating CVD; providing an insight into these fermented foods can assist scientists in improving the quality of these foods as well as alleviating patients’ CVD symptoms. We hope that in the future functional foods fermented by Lb. plantarum can be developed and incorporated into the daily diet to assist medication in alleviating CVD to some extent, and maintaining good health.
Collapse
|
3
|
Chrysostomou S, Frangopoulos F, Koutras Y, Andreou K, Socratous L, Giannakou K. The relation of dietary components with severity of obstructive sleep apnea in Cypriot patients: A randomized, stratified epidemiological study. PLoS One 2022; 17:e0265148. [PMID: 35275951 PMCID: PMC8916682 DOI: 10.1371/journal.pone.0265148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 02/23/2022] [Indexed: 11/19/2022] Open
Abstract
Background Obstructive Sleep Apnea (OSA) is considered a public health problem and its prevalence is increasing at an epidemic rate. The aim of this study was to examine whether individual nutrients (macronutrients, antioxidant vitamins) rather than energy restriction may potentially affect OSA severity in a representative population of Cyprus. Methods A total sample of 303 adults (>18 years old) with Cypriot citizenship and permanently residing in Cyprus were randomly selected. Selected patients have completed the food frequency questionnaire, and a physical activity questionnaire and underwent a sleep study to assess OSA severity. Results Overall, 303 patients were included in this study, 169 (55.8%) had mild OSA (apnea-hypopnea index—AHI <15) and the remaining 83 (27.4%) had moderate to severe OSA (AHI>15). The mean age of all patients was 55.7 years old. Patients with moderate to severe OSA had significant higher BMI levels, higher consumption of calories, higher hip circumference, waist circumference, waist-hip ratio and neck circumference and higher consumption of folic acid compared with the patients with mild OSA (p<0.05). Conclusions The findings suggest that increased energy intake regardless diet macronutrient composition is positively associated with OSA severity whereas higher folic acid intake seems to have a protective role.
Collapse
Affiliation(s)
- Stavri Chrysostomou
- Department of Life Sciences, School of Sciences, European University Cyprus, Nicosia, Cyprus
- * E-mail:
| | | | - Yiannis Koutras
- Department of Health Sciences, School of Sciences, European University Cyprus, Nicosia, Cyprus
| | - Kosmia Andreou
- Department of Life Sciences, School of Sciences, European University Cyprus, Nicosia, Cyprus
| | - Lydia Socratous
- Department of Life Sciences, School of Sciences, European University Cyprus, Nicosia, Cyprus
| | - Konstantinos Giannakou
- Department of Health Sciences, School of Sciences, European University Cyprus, Nicosia, Cyprus
| |
Collapse
|
4
|
Bridging the Reciprocal Gap between Sleep and Fruit and Vegetable Consumption: A Review of the Evidence, Potential Mechanisms, Implications, and Directions for Future Work. Nutrients 2019; 11:nu11061382. [PMID: 31248175 PMCID: PMC6627504 DOI: 10.3390/nu11061382] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 06/12/2019] [Accepted: 06/14/2019] [Indexed: 02/06/2023] Open
Abstract
A substantial burden of disease and mortality globally is attributable to both sleep disruption and low intakes of fruit and vegetable (FV) and there is increasing mechanistic and epidemiological evidence to support a reciprocal relationship between the two. This review provides an overview of experimental and observational studies assessing the relations between sleep and FV consumption from 52 human adult studies. Experimental studies are currently limited and show inconsistent results. Observational studies support a non-linear association with adults sleeping the recommended 7–9 hours/day having the highest intakes of FV. The potential mechanisms linking sleep and FV consumption are highlighted. Disrupted sleep influences FV consumption through homeostatic and non-homeostatic mechanisms. Conversely, FV consumption may influence sleep through polyphenol content via several potential pathways. Few human experimental studies have examined the effects of FV items and their polyphenols on sleep and there is a need for more studies to address this. An appreciation of the relationship between sleep and FV consumption may help optimize sleep and FV consumption and may reduce the burden of chronic diseases. This review provides implications for public health and directions for future work.
Collapse
|
5
|
Abuyassin B, Badran M, Ayas NT, Laher I. The antioxidant α-lipoic acid attenuates intermittent hypoxia-related renal injury in a mouse model of sleep apnea. Sleep 2019; 42:5382296. [DOI: 10.1093/sleep/zsz066] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/08/2019] [Indexed: 12/25/2022] Open
Affiliation(s)
- Bisher Abuyassin
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Mohammad Badran
- Departments of Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Najib T Ayas
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Ismail Laher
- Departments of Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| |
Collapse
|
6
|
Levels of TBARS are inversely associated with lowest oxygen saturation in obese patients with OSAS. Sleep Breath 2013; 17:1319-22. [PMID: 23361138 DOI: 10.1007/s11325-013-0819-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 01/07/2013] [Accepted: 01/23/2013] [Indexed: 10/27/2022]
Abstract
PURPOSE The aim of this study was to investigate the most important factors that determine lipid peroxidation in obese patients with obstructive sleep apnoea syndrome (OSAS). METHODS Twenty-one obese patients with OSAS based on overnight attended polysomnography were included. Thiobarbituric acid reactive substances (TBARS) were measured in serum. Anthropometric measurements were carried out. Dietary habits were assessed by a standardised food frequency questionnaire. RESULTS Spearman's correlation analysis showed significant positive correlations between TBARS and apnoea-hypopnoea index and desaturations/hour while negative between TBARS and mean/lowest oxygen saturation. The most significant predicting factor in the multiple linear regression model was lowest oxygen saturation. CONCLUSIONS This study has revealed an independent association between lowest oxygen saturation and TBARS levels after controlling for age, gender, diet and obesity in predominantly male patients with moderate to severe OSAS.
Collapse
|
7
|
Ishak I, Jufri NF, Lubis SH, Saat NZM, Omar B, Arlin R, Hazdi K, Mohamed N. The Study of Working Memory and Academic Performance of Faculty of Health Sciences Students. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.sbspro.2012.09.428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
8
|
Yagihara F, Lucchesi LM, D'Almeida V, Mello MTD, Tufik S, Bittencourt LRA. Oxidative stress and quality of life in elderly patients with obstructive sleep apnea syndrome: are there differences after six months of Continuous Positive Airway Pressure treatment? Clinics (Sao Paulo) 2012; 67:565-72. [PMID: 22760893 PMCID: PMC3370306 DOI: 10.6061/clinics/2012(06)04] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 02/13/2012] [Accepted: 02/16/2012] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVES This study evaluated the effect of Continuous Positive Airway Pressure treatment on oxidative stress parameters and the quality of life of elderly patients with obstructive sleep apnea syndrome. METHODS In total, 30 obstructive sleep apnea syndrome patients and 27 subjects without obstructive sleep apnea syndrome were included in this study. Both groups underwent quality of life and oxidative stress evaluations at baseline and after six months. Polysomnography was performed in both groups at baseline and a second time in the obstructive sleep apnea syndrome group after six months of Continuous Positive Airway Pressure treatment. All of the variables were compared between the control and obstructive sleep apnea syndrome groups in this prospective case-control study. RESULTS The baseline concentrations of the antioxidant enzyme catalase were higher in the obstructive sleep apnea syndrome group than the control group. After Continuous Positive Airway Pressure treatment, the obstructive sleep apnea syndrome group exhibited a reduction in the level of oxidative stress, as indicated by a decrease in the level of lipid peroxidation measured by the malondialdehyde (MDA) concentration [pre: 2.7 nmol malondialdehyde/mL (95% 1.6-3.7) vs. post: 1.3 nmol MDA/mL (0.7-1.9), p<0.01]. Additionally, improvements were observed in two domains covered by the SF-36 questionnaire: functional capacity [pre: 77.4 (69.2-85.5) vs. post: 83.4 (76.9-89.9), p = 0.002] and pain [pre: 65.4 (52.8-78.1) vs. post: 77.8 (67.2-88.3), p = 0.004]. CONCLUSION Our study demonstrated that the use of Continuous Positive Airway Pressure to treat obstructive sleep apnea syndrome in elderly patients reduced oxidative stress and improved the quality of life.
Collapse
Affiliation(s)
- Fabiana Yagihara
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | | | | | | | | | | |
Collapse
|
9
|
Papandreou C, Schiza SE, Tzatzarakis MN, Kavalakis M, Hatzis CM, Tsatsakis AM, Kafatos AG, Siafakas NM, Tzanakis NE. Effect of Mediterranean diet on lipid peroxidation marker TBARS in obese patients with OSAHS under CPAP treatment: a randomised trial. Sleep Breath 2011; 16:873-9. [PMID: 21918812 DOI: 10.1007/s11325-011-0589-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Revised: 08/02/2011] [Accepted: 08/29/2011] [Indexed: 01/06/2023]
Abstract
PURPOSE The aim of our study was to examine the possible effect of the Mediterranean diet on thiobarbituric acid reacting substances (TBARS) in obese patients with obstructive sleep apnoea/hypopnoea syndrome (OSAHS) who are under continuous positive airway pressure treatment. METHODS Nine hundred patients were evaluated during a 1-year period (November 2008-October 2009), and 21 obese patients who met the inclusion criteria, with moderate to severe OSAHS based on overnight attended polysomnography, were included in the study. After randomisation, 11 followed the Mediterranean diet and 10 a prudent diet for a 6-month period. TBARS were measured in serum. RESULTS TBARS levels decreased notably in both groups (p < 0.05), but no difference was observed between them (p > 0.05). There were significant differences in other characteristics. The Mediterranean diet group showed a greater reduction in weight (-10.8 ± 3.8), body mass index (-3.9 ± 1.6), waist circumference (-9.9 ± 3.0) and percentage of body fat (-4.7 ± 2.3) compared with the other group (-6.9 ± 3.1, -2.5 ± 1.0, -5.3 ± 2.6 and -2.2 ± 1.5, respectively; p < 0.05). CONCLUSIONS Our results showed that the Mediterranean diet did not reduce the TBARS more than the prudent diet.
Collapse
Affiliation(s)
- Christopher Papandreou
- Department of Social Medicine, Preventive Medicine and Nutrition Clinic, Medical School, University of Crete, Heraklion, Crete, Greece.
| | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Autonomic alterations and endothelial dysfunction in pediatric obstructive sleep apnea. Sleep Med 2010; 11:714-20. [DOI: 10.1016/j.sleep.2009.12.013] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2009] [Revised: 12/06/2009] [Accepted: 12/12/2009] [Indexed: 11/21/2022]
|
11
|
Baldwin CM, Bell IR, Guerra S, Quan SF. Obstructive sleep apnea and ischemic heart disease in southwestern US veterans: implications for clinical practice. Sleep Breath 2009; 9:111-8. [PMID: 16091955 DOI: 10.1007/s11325-005-0025-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This study describes associations between obstructive sleep apnea (OSA), intake of food rich in antioxidant nutrients, and ischemic heart disease (IHD) in military veterans. Subjects were male veterans (n=211), 54 to 85 years of age, and enrolled in primary care clinics at the Southern Arizona Veterans Affairs Health Care System (SAVAHCS), Tucson, AZ. Measures included the SAVAHCS Minority Vascular Center Questionnaire, the Sleep Heart Health Study Sleep Habits Questionnaire, the Arizona Food Frequency Questionnaire, height, weight, and blood pressure. Veterans with OSA were significantly more likely to be obese, to have elevated systolic blood pressure and physician-diagnosed IHD, more likely to undergo coronary angiography, and less likely to consume foods rich in cardioprotective antioxidants compared to veterans without OSA. After adjusting for confounding variables, the association between OSA and IHD remains significant [adjusted OR=2.99, confidence interval (CI)=1.07-8.42]. These data reinforce the importance of recognizing OSA within the veterans affairs health care system and suggest that early detection of OSA may improve veterans' health and well-being and reduce associated medical costs.
Collapse
Affiliation(s)
- Carol M Baldwin
- College of Nursing, Arizona State University, Southwest Borderlands Initiative, Tempe, AZ, 85287-2602, USA.
| | | | | | | |
Collapse
|
12
|
Yamauchi M, Kimura H. Oxidative stress in obstructive sleep apnea: putative pathways to the cardiovascular complications. Antioxid Redox Signal 2008; 10:755-68. [PMID: 18177236 DOI: 10.1089/ars.2007.1946] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Obstructive sleep apnea (OSA) is a major public health problem because of its high prevalence in morbidity and mortality. A growing body of evidence suggests that OSA is an important risk factor for cardiovascular diseases. Although the mechanism for the initiation and aggravation of cardiovascular disease has not been fully elucidated, one theorized mechanism is intermittent hypoxia, which is produced by each sleep-disordered breathing event. This repeated hypoxia and reoxygenation cycle is similar to hypoxia-reperfusion injury, which initiates oxidative stress. Recent studies have suggested that OSA is associated with increased levels of oxidative stress or antioxidant deficiencies or both. Oxidative stress is involved in the activation of redox-sensitive transcription factors, which regulate downstream products such as inflammatory cytokines, chemokines, and adhesion molecules. This pathway may be able to explain the pathogenesis of atherosclerosis, a common pathologic factor underlying all types of cardiovascular disease. In addition, endothelial dysfunction derived from oxidative stress can contribute to cardiovascular diseases. This review summarizes current available evidence for and against the occurrence of oxidative stress in OSA and discusses the putative pathways initiating cardiovascular consequences associated with OSA.
Collapse
Affiliation(s)
- Motoo Yamauchi
- Second Department of Internal Medicine, Nara Medical University, Nara, Japan.
| | | |
Collapse
|
13
|
Kheirandish-Gozal L, Sans Capdevila O, Kheirandish E, Gozal D. Elevated Serum Aminotransferase Levels in Children at Risk for Obstructive Sleep Apnea. Chest 2008; 133:92-9. [DOI: 10.1378/chest.07-0773] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
|
14
|
Selmi C, Montano N, Furlan R, Keen CL, Gershwin ME. Inflammation and oxidative stress in obstructive sleep apnea syndrome. Exp Biol Med (Maywood) 2007; 232:1409-13. [PMID: 18040064 DOI: 10.3181/0704-mr-103] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Similar to obesity, with which it is closely associated, obstructive sleep apnea syndrome (OSAS) is rapidly becoming a worldwide epidemic. Current knowledge of its pathogenesis has been significantly enriched by numerous experimental studies that have demonstrated an important role of oxidative stress and inflammation. Furthermore, new and exciting data strongly connect these two components in the perpetuation of the condition via the overexpression of nuclear factor kappaB. Experimental data support the hypothesis that nutrition might represent a promising future approach with antioxidants currently being good candidates for the modulation of cardiovascular sequelae, although weight reduction and controlled positive airway pressure remain the only established treatments for OSAS. We discuss herein the recent literature that illustrates these new paradigms and speculate on possible implications and future scenarios.
Collapse
Affiliation(s)
- Carlo Selmi
- Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis, Davis, CA 95616, USA
| | | | | | | | | |
Collapse
|
15
|
Gozal D, Kheirandish-Gozal L. Cardiovascular morbidity in obstructive sleep apnea: oxidative stress, inflammation, and much more. Am J Respir Crit Care Med 2007; 177:369-75. [PMID: 17975198 DOI: 10.1164/rccm.200608-1190pp] [Citation(s) in RCA: 267] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Sleep-disordered breathing and obstructive sleep apnea (OSA) are highly prevalent disorders throughout the lifespan, which may affect up to 2-10% of the population, and have now been firmly associated with an increased risk for cardiovascular and neurobehavioral complications. Nevertheless, the overall pathophysiologic mechanisms mediating end-organ injury in OSA remain undefined, particularly due to the very frequent coexistence of other disease states, such as obesity, that clearly complicate the potential cause-effect relationships. Two major, and to some extent overlapping, mechanisms have been proposed to explain the morbid consequences of OSA, namely increased generation and propagation of reactive oxygen species and initiation and amplification of inflammatory processes. The evidence supporting the validity of these concepts as well as that detracting from such mechanisms will be critically reviewed in the context of clinical and laboratory-based approaches. In addition, some of the contradictory issues raised by such evaluation of the literature will be interpreted in the context of putative modifications of the individual responses to OSA, as determined by genetic variants among susceptibility-related genes, and also by potential environmental modulators of the phenotypic expression of any particular end-organ morbidity associated with OSA.
Collapse
Affiliation(s)
- David Gozal
- Kosair Children's Hospital Research Institute, University of Louisville School of Medicine, 570 South Preston Street, Suite 204, Louisville, KY 40202, USA.
| | | |
Collapse
|
16
|
Ozkan Y, Fırat H, Şimşek B, Torun M, Yardim-Akaydin S. Circulating nitric oxide (NO), asymmetric dimethylarginine (ADMA), homocysteine, and oxidative status in obstructive sleep apnea–hypopnea syndrome (OSAHS). Sleep Breath 2007; 12:149-54. [DOI: 10.1007/s11325-007-0148-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
17
|
Nácher M, Serrano-Mollar A, Maria Montserrat J. Nuevos aspectos patogénicos en el síndrome de apneas e hipopneas durante el sueño (SAHS). Arch Bronconeumol 2007. [DOI: 10.1016/s0300-2896(07)71177-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
18
|
Pappu AS, Connor WE, Merkens LS, Jordan JM, Penfield JA, Illingworth DR, Steiner RD. Increased nonsterol isoprenoids, dolichol and ubiquinone, in the Smith-Lemli-Opitz syndrome: effects of dietary cholesterol. J Lipid Res 2006; 47:2789-98. [PMID: 16983147 DOI: 10.1194/jlr.m600295-jlr200] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Smith-Lemli-Opitz syndrome (SLOS) is an inherited autosomal recessive cholesterol deficiency disorder. Our studies have shown that in SLOS children, urinary mevalonate excretion is normal and reflects hepatic HMG-CoA reductase activity but not ultimate sterol synthesis. Hence, we hypothesized that in SLOS there may be increased diversion of mevalonate to nonsterol isoprenoid synthesis. To test our hypothesis, we measured urinary dolichol and ubiquinone, two nonsterol isoprenoids, in 16 children with SLOS and 15 controls, all fed a low-cholesterol diet. The urinary excretion of both dolichol (P < 0.002) and ubiquinone (P < 0.02) in SLOS children was 7-fold higher than in control children, whereas mevalonate excretion was comparable. In a subset of 12 SLOS children, a high-cholesterol diet decreased urinary mevalonate excretion by 61% (P < 0.001), dolichol by 70% (P < 0.001), and ubiquinone by 67% (P < 0.03). Our hypothesis that in SLOS children, normal urinary mevalonate excretion results from increased diversion of mevalonate into the production of nonsterol isoprenoids is supported. Dietary cholesterol supplementation reduced urinary mevalonate and nonsterol isoprenoid excretion but did not change the relative ratios of their excretion. Therefore, in SLOS, a secondary peripheral regulation of isoprenoid synthesis may be stimulated.
Collapse
Affiliation(s)
- Anuradha S Pappu
- Division of Endocrinology, Diabetes, and Clinical Nutrition, Department of Medicine, Oregon Health and Science University, Portland, OR 97239, USA.
| | | | | | | | | | | | | |
Collapse
|
19
|
Barbé F, Barceló A, Montserrat JM. Sleep apnoea syndrome: a look at ethnicity, pathogeny and potential therapheutic approaches. Sleep Med Rev 2005; 9:415-8. [PMID: 16263312 DOI: 10.1016/j.smrv.2005.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|