1
|
Valenzuela T, Coombes JS, Liu-Ambrose T, Mavros Y, Kochan N, Sachdev PS, Hausdorff J, Smith EC, Hollings M, Hawkins TC, Ashley NJ, Feter N, Wilson GC, Shih IHE, Guerrero Y, Jiang J, Wen W, Bailey T, Stensvold D, Wisløff U, Falck RS, Fiatarone Singh M. Study protocol for the BRAIN Training Trial: a randomised controlled trial of Balance, Resistance, And INterval training on cognitive function in older adults with mild cognitive impairment. BMJ Open 2022; 12:e062059. [PMID: 36600421 PMCID: PMC9772642 DOI: 10.1136/bmjopen-2022-062059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
INTRODUCTION Epidemiological evidence suggests that both poor cardiovascular fitness and low muscle mass or strength markedly increase the rate of cognitive decline and incident dementia in older adults. Results from exercise trials for the improvement of cognition in older adults with mild cognitive impairment (MCI) have reported mixed results. This is possibly due to insufficient exercise intensities. The aim of the Balance, Resistance, And INterval (BRAIN) Training Trial is to determine the effects of two forms of exercise, high-intensity aerobic interval training (HIIT) and high-intensity power training (POWER) each compared with a sham exercise control group on cognition in older adults with MCI. METHODS AND ANALYSIS One hundred and sixty community-dwelling older (≥ 60 years) people with MCI have been randomised into the trial. Interventions are delivered supervised 2-3 days per week for 12 months. The primary outcome measured at baseline, 6 and 12 months is performance on a cognitive composite score measuring the executive domain calculated from a combination of computerised (NeuroTrax) and paper-and-pencil tests. Analyses will be performed via repeated measures linear mixed models and generalised linear mixed models of baseline, 6-month and 12-month time points, adjusted for baseline values and covariates selected a priori. Mixed models will be constructed to determine the interaction of GROUP × TIME. ETHICS AND DISSEMINATION Ethical approval was obtained from the University of Sydney (HREC Ref.2017/368), University of Queensland (HREC Ref. 2017/HE000853), University of British Columbia (H16-03309), and Vancouver Coastal Health Research Institute (V16-03309) Human Research Ethics. Dissemination will be via publications, conference presentations, newsletter articles, social media, talks to clinicians and consumers and meetings with health departments/managers.It is expected that communication of results will allow for the development of more effective evidence-based exercise prescription guidelines in this population while investigating the benefits of HIIT and POWER on subclinical markers of disease. TRIAL REGISTRATION NUMBER ACTRN12617001440314 Australian New Zealand Clinical Trials Registry.
Collapse
Affiliation(s)
- Trinidad Valenzuela
- Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- Exercise and Rehabilitation Sciences Laboratory, School of Physical Therapy, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile
| | - Jeff S Coombes
- Human Movement and Nutrition Sciences, Faculty of Health and Behavioural Sciences, The University of Queensland, Herston, Queensland, Australia
| | - Teresa Liu-Ambrose
- Aging, Mobility, and Cognitive Neuroscience Laboratory, Department of Physical Therapy, Faculty of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
- Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada
| | - Yorgi Mavros
- Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Nicole Kochan
- Centre for Healthy Brain Ageing, School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Perminder S Sachdev
- Centre for Healthy Brain Ageing, School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Jeffrey Hausdorff
- Center for the Study of Movement, Cognition and Mobility, Neurological Institute, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
- Sagol School of Neuroscience and Department of Physical Therapy, Faculty of Medicine, Tel Aviv University Sackler, Tel Aviv, Israel
| | - Emily C Smith
- Human Movement and Nutrition Sciences, Faculty of Health and Behavioural Sciences, The University of Queensland, Herston, Queensland, Australia
| | - Matthew Hollings
- Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Tess C Hawkins
- Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Nicholas J Ashley
- Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Natan Feter
- Postgraduate Program of Physical Education, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Guy C Wilson
- Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Isabel Hui En Shih
- Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Yareni Guerrero
- Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Jiyang Jiang
- Centre for Healthy Brain Ageing, School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Wei Wen
- Centre for Healthy Brain Ageing, School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Tom Bailey
- Human Movement and Nutrition Sciences, Faculty of Health and Behavioural Sciences, The University of Queensland, Herston, Queensland, Australia
- School of Nursing Midwifery and Social Work, Faculty of Health and Behavioural Sciences, The University of Queensland, Herston, Queensland, Australia
| | - Dorthe Stensvold
- Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Ulrik Wisløff
- Human Movement and Nutrition Sciences, Faculty of Health and Behavioural Sciences, The University of Queensland, Herston, Queensland, Australia
- Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Ryan S Falck
- School of Biomedical Engineering, Faculty of Applied Science, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Maria Fiatarone Singh
- Sydney School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| |
Collapse
|
2
|
Ginige JA, Boulamatsis C, Heffernan M, San Jose JC, Chuprov I, Chau T, Maeder A, Valenzuela M, Fiatarone Singh M, Mavros Y, Noble Y, Radd-Vagenas S, Guerrero Y, Jain N, O'Leary F, Kochan N, Brodaty H. Fully-Online, Interoperable Clinical Trial Management System for Multi-Interventional RCT: Maintain Your Brain Digital Platform. Stud Health Technol Inform 2020; 268:97-112. [PMID: 32141882 DOI: 10.3233/shti200009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Maintain Your Brain (MYB)i is a randomised controlled trial (RCT) of multiple online interventions designed to target modifiable risk factors for Alzheimer's disease and dementia. Traditional clinical trial management systems (CTMS) requirements consist of features such as management of the study, site, subject (participant), clinical outcomes, external and internal requests, education, data extraction and reporting, security, and privacy. In addition to fulfilling these traditional requirements, MYB has a specific set of features that needs to be fulfilled. These specific requirements include: (i) support for multiple interventions within a study, (ii) flexible interoperability options with third-party software providers, (iii) study participants being able to engage in online activities via web-based interfaces throughout the trial (from screening to follow-up), (iv) ability to algorithmically personalize trial activities based on the needs of the participant, and (v) the ability to handle large volumes of data over a long period. This paper outlines how the existing CTMSs fall short in meeting these specific requirements. The presented system architecture, development approach and lessons learned in the implementation of the MYB digital platform will inform researchers attempting to implement CTMSs for trials comparable to MYB in the future.
Collapse
Affiliation(s)
| | - Christos Boulamatsis
- School of Computer, Mathematical and Data Sciences, Western Sydney University, Sydney
| | - Megan Heffernan
- Centre for Healthy Brain Ageing, School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Juan Carlos San Jose
- School of Computer, Mathematical and Data Sciences, Western Sydney University, Sydney.,Centre for Healthy Brain Ageing, School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Igor Chuprov
- School of Computer, Mathematical and Data Sciences, Western Sydney University, Sydney
| | - Tiffany Chau
- Centre for Healthy Brain Ageing, School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Anthony Maeder
- Flinders Digital Health Research Centre and Caring Futures Institute, College of Nursing and Health Sciences, Flinders University, Adelaide, Australia
| | | | | | - Yorgi Mavros
- Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | - Yian Noble
- School of Exercise and Sport Science, University of Sydney, Sydney, Australia
| | - Sue Radd-Vagenas
- School of Exercise and Sport Science, University of Sydney, Sydney, Australia
| | - Yareni Guerrero
- School of Exercise and Sport Science, University of Sydney, Sydney, Australia
| | - Nidhi Jain
- School of Exercise and Sport Science, University of Sydney, Sydney, Australia
| | - Fiona O'Leary
- School of Life and Environmental Science and The Charles Perkins Centre, University of Sydney, Sydney, Australia
| | - Nicole Kochan
- Centre for Healthy Brain Ageing, School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Henry Brodaty
- Centre for Healthy Brain Ageing, School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, Australia
| |
Collapse
|
3
|
Heffernan M, Andrews G, Fiatarone Singh MA, Valenzuela M, Anstey KJ, Maeder AJ, McNeil J, Jorm L, Lautenschlager NT, Sachdev PS, Ginige JA, Hobbs MJ, Boulamatsis C, Chau T, Cobiac L, Cox KL, Daniel K, Flood VM, Guerrero Y, Gunn J, Jain N, Kochan NA, Lampit A, Mavros Y, Meiklejohn J, Noble Y, O’Leary F, Radd-Vagenas S, Walton CC, Brodaty H. Maintain Your Brain: Protocol of a 3-Year Randomized Controlled Trial of a Personalized Multi-Modal Digital Health Intervention to Prevent Cognitive Decline Among Community Dwelling 55 to 77 Year Olds. J Alzheimers Dis 2019; 70:S221-S237. [PMID: 30475762 PMCID: PMC6700632 DOI: 10.3233/jad-180572] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2018] [Indexed: 02/05/2023]
Abstract
BACKGROUND Maintain Your Brain (MYB) is a randomized controlled trial of an online multi-modal lifestyle intervention targeting modifiable dementia risk factors with its primary aim being to reduce cognitive decline in an older age cohort. METHODS MYB aims to recruit 8,500 non-demented community dwelling 55 to 77 year olds from the Sax Institute's 45 and Up Study in New South Wales, Australia. Participants will be screened for risk factors related to four modules that comprise the MYB intervention: physical activity, nutrition, mental health, and cognitive training. Targeting risk factors will enable interventions to be personalized so that participants receive the most appropriate modules. MYB will run for three years and up to four modules will be delivered sequentially each quarter during year one. Upon completing a module, participants will continue to receive less frequent booster activities for their eligible modules (except for the mental health module) until the end of the trial. DISCUSSION MYB will be the largest internet-based trial to attempt to prevent cognitive decline and potentially dementia. If successful, MYB will provide a model for not just effective intervention among older adults, but an intervention that is scalable for broad use.
Collapse
Affiliation(s)
- Megan Heffernan
- Centre for Healthy Brain Ageing, University of New South Wales, Australia
| | - Gavin Andrews
- Clinical Research Unit for Anxiety and Depression, School of Psychiatry, University of New South Wales, Australia
| | - Maria A. Fiatarone Singh
- Sydney Medical School, University of Sydney, Australia
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Health Sciences, University of Sydney, Australia
- Hebrew SeniorLife and Jean Meyer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA USA
| | - Michael Valenzuela
- Sydney Medical School, University of Sydney, Australia
- Brain and Mind Centre, University of Sydney, Australia
| | | | - Anthony J. Maeder
- College of Nursing & Health Sciences, Flinders University, Australia
| | | | - Louisa Jorm
- Centre for Big Data Research in Health, University of New South Wales, Australia
| | - Nicola T. Lautenschlager
- University of Melbourne, Australia
- North Western Mental Health, Melbourne Health, Melbourne, Australia
| | | | | | - Megan J. Hobbs
- Clinical Research Unit for Anxiety and Depression, School of Psychiatry, University of New South Wales, Australia
| | | | - Tiffany Chau
- Centre for Healthy Brain Ageing, University of New South Wales, Australia
| | | | - Kay L. Cox
- Medical School, University of Western Australia, Perth, Australia
| | - Kenneth Daniel
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Health Sciences, University of Sydney, Australia
| | - Victoria M. Flood
- Faculty of Health Sciences, University of Sydney, Australia
- Western Sydney Local Health District, Westmead Hospital, Australia
| | - Yareni Guerrero
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Health Sciences, University of Sydney, Australia
| | - Jane Gunn
- Department of General Practice, University of Melbourne, Melbourne, Australia
| | - Nidhi Jain
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Health Sciences, University of Sydney, Australia
| | - Nicole A. Kochan
- Centre for Healthy Brain Ageing, University of New South Wales, Australia
| | - Amit Lampit
- Brain and Mind Centre, University of Sydney, Australia
- University of Melbourne, Australia
| | - Yorgi Mavros
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Health Sciences, University of Sydney, Australia
| | - Jacinda Meiklejohn
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Health Sciences, University of Sydney, Australia
| | - Yian Noble
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Health Sciences, University of Sydney, Australia
| | - Fiona O’Leary
- Nutrition and Dietetics Group, School of Life and Environmental Science, Faculty of Science & The Charles Perkins Centre, University of Sydney, Australia
| | - Sue Radd-Vagenas
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Health Sciences, University of Sydney, Australia
| | - Courtney C. Walton
- Brain and Mind Centre, University of Sydney, Australia
- School of Psychology, University of Queensland, Melbourne, Australia
| | - Maintain Your Brain Collaborative Team
- Centre for Healthy Brain Ageing, University of New South Wales, Australia
- Clinical Research Unit for Anxiety and Depression, School of Psychiatry, University of New South Wales, Australia
- Sydney Medical School, University of Sydney, Australia
- Physical Activity, Lifestyle, Ageing and Wellbeing Faculty Research Group, Faculty of Health Sciences, University of Sydney, Australia
- Brain and Mind Centre, University of Sydney, Australia
- School of Psychology, University of New South Wales, Australia
- College of Nursing & Health Sciences, Flinders University, Australia
- Monash University, Australia
- Centre for Big Data Research in Health, University of New South Wales, Australia
- University of Melbourne, Australia
- Western Sydney University, Australia
- CSIRO Health and Biosecurity
- Medical School, University of Western Australia, Perth, Australia
- Faculty of Health Sciences, University of Sydney, Australia
- Western Sydney Local Health District, Westmead Hospital, Australia
- Nutrition and Dietetics Group, School of Life and Environmental Science, Faculty of Science & The Charles Perkins Centre, University of Sydney, Australia
- North Western Mental Health, Melbourne Health, Melbourne, Australia
- Department of General Practice, University of Melbourne, Melbourne, Australia
- School of Psychology, University of Queensland, Melbourne, Australia
- Hebrew SeniorLife and Jean Meyer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA USA
| | - Henry Brodaty
- Centre for Healthy Brain Ageing, University of New South Wales, Australia
| |
Collapse
|
4
|
Radd-Vagenas S, Fiatarone Singh MA, Daniel K, Noble Y, Jain N, O'Leary F, Mavros Y, Heffernan M, Meiklejohn J, Guerrero Y, Chau T, Sachdev PS, Brodaty H, Flood VM. Validity of the Mediterranean Diet and Culinary Index (MediCul) for Online Assessment of Adherence to the 'Traditional' Diet and Aspects of Cuisine in Older Adults. Nutrients 2018; 10:E1913. [PMID: 30518078 PMCID: PMC6315571 DOI: 10.3390/nu10121913] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 11/16/2018] [Accepted: 11/28/2018] [Indexed: 02/07/2023] Open
Abstract
The Mediterranean diet is associated with multiple health benefits. Yet, no tool has been specifically developed to assess adherence to the 'traditional' Mediterranean diet and cuisine within a Western cohort, and validated for online use. We tested the reliability and validity of online administration of the Mediterranean Diet and Culinary Index (MediCul) among middle-aged and older adults. Participants were recruited in January⁻March 2017 from the 45 and Up Study, completing MediCul twice. Test-retest reliability was assessed using the paired t-test, intra-class correlation coefficient (ICC) and Bland-Altman plot. Validity was tested against a three-day food record (FR)-derived MediCul score using Bland-Altman and nutrient trends across the MediCul score tertiles. Participants (n = 84; 60% female; 65.4 years (SD = 5.9)), were overweight (BMI 26.1; SD = 4.0) with 1.7 (SD = 1.5) chronic illnesses/conditions. Sequential MediCul tool scores were 56.1/100.0 and 56.8/100.0, respectively (t = -1.019; p = 0.311). Reliability via ICC (ICC = 0.86, 95% CI: 0.789, 0.910, p < 0.0001) and Bland-Altman was good. In Bland-Altman validity analyses, the tool over-reported FR MediCul score by 5.6 points with no systematic bias ((y = 8.7 - 0.06*x) (95% CI: -0.278, 0.158, p = 0.584)). Nutrient trends were identified for MediCul consistent with expected Mediterranean patterns. Online MediCul administration demonstrated good reliability and moderate validity for assessing adherence to a 'traditional' Mediterranean pattern among older Australians.
Collapse
Affiliation(s)
- Sue Radd-Vagenas
- The University of Sydney, Physical Activity, Lifestyle, Ageing and Wellbeing Research Group, Faculty of Health Sciences, Lidcombe, NSW 2141, Australia.
| | - Maria A Fiatarone Singh
- The University of Sydney, Physical Activity, Lifestyle, Ageing and Wellbeing Research Group, Faculty of Health Sciences, Lidcombe, NSW 2141, Australia.
- The University of Sydney, Sydney Medical School, Camperdown, NSW 2006, Australia and Hebrew SeniorLife and Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA 02111, USA.
| | - Kenneth Daniel
- The University of Sydney, Physical Activity, Lifestyle, Ageing and Wellbeing Research Group, Faculty of Health Sciences, Lidcombe, NSW 2141, Australia.
| | - Yian Noble
- The University of Sydney, Physical Activity, Lifestyle, Ageing and Wellbeing Research Group, Faculty of Health Sciences, Lidcombe, NSW 2141, Australia.
| | - Nidhi Jain
- The University of Sydney, Physical Activity, Lifestyle, Ageing and Wellbeing Research Group, Faculty of Health Sciences, Lidcombe, NSW 2141, Australia.
| | - Fiona O'Leary
- The University of Sydney, Nutrition and Dietetics Group, School of Life and Environmental Science, Faculty of Science and The Charles Perkins Centre, Camperdown, NSW 2006, Australia.
| | - Yorgi Mavros
- The University of Sydney, Physical Activity, Lifestyle, Ageing and Wellbeing Research Group, Faculty of Health Sciences, Lidcombe, NSW 2141, Australia.
| | - Megan Heffernan
- Centre for Healthy Brain Ageing (CHeBA), School of Psychiatry, University of New South Wales, Randwick, NSW 2031, Australia.
| | - Jacinda Meiklejohn
- The University of Sydney, Physical Activity, Lifestyle, Ageing and Wellbeing Research Group, Faculty of Health Sciences, Lidcombe, NSW 2141, Australia.
| | - Yareni Guerrero
- The University of Sydney, Physical Activity, Lifestyle, Ageing and Wellbeing Research Group, Faculty of Health Sciences, Lidcombe, NSW 2141, Australia.
| | - Tiffany Chau
- Centre for Healthy Brain Ageing (CHeBA), School of Psychiatry, University of New South Wales, Randwick, NSW 2031, Australia.
| | - Perminder S Sachdev
- Centre for Healthy Brain Ageing (CHeBA), School of Psychiatry, University of New South Wales, Randwick, NSW 2031, Australia.
- Dementia Centre for Research Collaboration, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Henry Brodaty
- Centre for Healthy Brain Ageing (CHeBA), School of Psychiatry, University of New South Wales, Randwick, NSW 2031, Australia.
- Dementia Centre for Research Collaboration, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Victoria M Flood
- The University of Sydney, Physical Activity, Lifestyle, Ageing and Wellbeing Research Group, Faculty of Health Sciences, Lidcombe, NSW 2141, Australia.
- Western Sydney Local Health District, Westmead Hospital, Westmead, NSW 2145, Australia.
| |
Collapse
|
5
|
Alarcón-Corredor OM, Guerrero Y, Ramírez de Fernández M, D'Jesús I, Burguera M, Burguera JL, Di Bernardo ML, García MY, Alarcón AO. [Effect of copper supplementation on lipid profile of Venezuelan hyperlipemic patients]. Arch Latinoam Nutr 2004; 54:413-8. [PMID: 15969266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
It has been assumed that most Western diets satisfy the requirement of copper/day because of ubiquitous presence of this element in most foods. Recent studies have shown that dietary copper (Cu) may often fall below the estimated daily requirements, what could determine a deficiency of this trace element. This deficiency is associated with hypercholesterolemia and hypertrigliceridemia, both in human and experimental animals. In the present intervention study was examined the effect of the administration of 5 mg of Cu/day in 73 patients (treated group), of both genders, with ages between 26 and 48 years, with high serum levels of total cholesterol and triglycerides without pharmacological treatment and compared with 73 hyperlipemic subjects non-treated with copper (control group) who were matched by gender, age, body weight, smoking habits, calories and fat intake, and physical activity. Before copper administration, a sample of blood was obtained for serum determinations of copper, zinc and lipids. At the end of the experimental period (45 days), a new sample of blood was taken for the corresponding determinations. The results suggest the existence of a marginal deficiency of the trace element in 38% of the subjects and demonstrate that copper supplementation decreases (p < 0.05) serum levels of total cholesterol (r = -0.976), triglycerides (r = -0.972), LDL-cholesterol (r = -0.961) and zinc (r = -0.980) with a slight increment (r = 0.894) of HDL-cholesterol. These findings demonstrate that copper can be used in the treatment of the patients with hypercholesterolemia and hypertriglyceridemia. The mechanisms by which Cu determines these changes are not known.
Collapse
Affiliation(s)
- O M Alarcón-Corredor
- IVAIQUIM (Instituto Venezolano-Andino para Investigaciones Químicas), Facultad de Ciencias, Escuela de Nutrición y Dietética, Universidad de Los Andes, Mérida, Venezuela
| | | | | | | | | | | | | | | | | |
Collapse
|
6
|
Alarcón OM, Guerrero Y, Ramírez de Fernández M, D'Jesús I, Burguera M, Burguera JL, Di Bernardo ML. [Effect of cooper supplementation on blood pressure values in patients with stable moderate hypertension]. Arch Latinoam Nutr 2003; 53:271-6. [PMID: 14694810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
Copper (Cu) deficiency is associated with changes in arterial pressure. The effect depends of the age of initiation of the copper-deficient diet. Copper deficiency started at a young age causes hypotension. When initiated in older or adult animals, copper deficiency can cause hypertension. A case-control study was carried out to investigate the effect of administrating 5 mg Cu/d in 60 subjects, both genders, with mild stable hypertension, pharmacologically untreated (treated group) and compared with 60 hypertensives (control group) who were matched by gender, age, body weight, smoking habits, calories, fat and salt intake (NaCl), and physical activity. Hypertension was diagnosed when the blood pressure was > 150/95 mm Hg. Mean age, mean corporal weight and risk factors were similar in both groups. The results suggested the existence of a marginal deficiency of the trace element in 62% of subjects and demonstrated that Cu decreases systolic (r = -0.963) and diastolic (r = -0.981) blood pressures in treated group (p < 0.05). Control patients did not show significant changes in their arterial pressures. These findings indicate a functional alteration in human blood pressure regulation during mild copper depletion and suggest that Cu could be used in the treatment of stable moderate arterial hypertension. Further investigation is needed to determine the extent of this influence.
Collapse
Affiliation(s)
- O M Alarcón
- IVAIQUIM-Instituto Andino Venezolano para la Investigación Química, Facultad de Ciencias-Laboratorio de Bioquímica y Nutrición, Escuela de Nutrición y Dietética, Facultad de Medicina, Universidad de Los Andes, Venezuela
| | | | | | | | | | | | | |
Collapse
|