51
|
Ortega JF, Morales-Palomo F, Fernandez-Elias V, Hamouti N, Bernardo FJ, Martin-Doimeadios RC, Nelson RK, Horowitz JF, Mora-Rodriguez R. Dietary supplementation with omega-3 fatty acids and oleate enhances exercise training effects in patients with metabolic syndrome. Obesity (Silver Spring) 2016; 24:1704-11. [PMID: 27356240 DOI: 10.1002/oby.21552] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 04/11/2016] [Accepted: 04/12/2016] [Indexed: 11/06/2022]
Abstract
OBJECTIVE We studied the effects of exercise training alone or combined with dietary supplementation of omega-3 polyunsaturated fatty acids (Ω-3PUFA) and oleate on metabolic syndrome (MSyn) components and other markers of cardiometabolic health. METHODS Thirty-six patients with MSyn underwent 24 weeks of high-intensity interval training. In a double-blind randomized design, half of the group ingested 500 mL/day of semi-skim milk (8 g of fat; placebo milk) whereas the other half ingested 500 mL/day of skim milk enriched with 275 mg of Ω-3PUFA and 7.5 g of oleate (Ω-3 + OLE). RESULTS Ω-3 + OLE treatment elevated 30% plasma Ω-3PUFA but not significantly (P = 0.286). Improvements in VO2peak (12.8%), mean blood pressure (-7.1%), waist circumference (-1.8%), body fat mass (-2.9%), and trunk fat mass (-3.3%) were similar between groups. However, insulin sensitivity (measured by intravenous glucose tolerance test), serum concentration of C-reactive protein, and high-density lipoprotein improved only in the Ω-3 + OLE group by 31.5%, 32.1%, and 10.3%, respectively (all P < 0.05). Fasting serum triacylglycerol, glucose, and plasma fibrinogen concentrations did not improve in either group after 24 weeks of intervention. CONCLUSIONS Diet supplementation with Ω-3PUFA and oleate enhanced cardiometabolic benefits of intense aerobic exercise training in patients with MSyn.
Collapse
Affiliation(s)
- Juan F Ortega
- Exercise Physiology Lab, University of Castilla-La Mancha, Toledo, Spain
| | | | | | - Nassim Hamouti
- Exercise Physiology Lab, University of Castilla-La Mancha, Toledo, Spain
| | - Francisco J Bernardo
- Environmental Sciences and Biochemistry, University of Castilla-La Mancha, Toledo, Spain
| | | | - Rachael K Nelson
- College Health Professions, Health Sciences Department, Central Michigan University, Mt. Pleasant, Michigan, USA
| | | | | |
Collapse
|
52
|
Watkins BA, Kim J, Kenny A, Pedersen TL, Pappan KL, Newman JW. Circulating levels of endocannabinoids and oxylipins altered by dietary lipids in older women are likely associated with previously identified gene targets. Biochim Biophys Acta Mol Cell Biol Lipids 2016; 1861:1693-1704. [PMID: 27452639 DOI: 10.1016/j.bbalip.2016.07.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 06/29/2016] [Accepted: 07/19/2016] [Indexed: 12/26/2022]
Abstract
Postmenopausal women (PMW) report marginal n-3 PUFA intakes and are at risk of chronic diseases associated with the skeletal, muscular, neuroendocrine, and cardiovascular systems. How n-3 PUFA affect the amounts of endocannabinoids (ECs) and oxylipins (OLs) of metabolic and physiologic importance in PMW is not clear. Based on our recent findings that dietary n-3 PUFA alter gene targets of the EC system and lower pro-inflammatory OL we proceeded to characterize these actions in blood of PMW. Our aim was to determine levels of the ECs, OLs, and global metabolites (GM) in white PMW (75±7y), randomized in a double-masked manner, from baseline to 6mo after receiving a fish oil supplement of n-3 PUFA (720mg 20:5n3+480mg 22:6n3/d, n=20) or placebo (1.8g oleic acid/d, n=20). ECs and OLs in serum were determined by UPLC-MS/MS and GM by GC-MS and LC-MS/MS. Plasma 20:5n3 and 22:6n3 levels increased in PMW given fish oil. EC n-6 acyl-ethanolamides, arachidonate-derived diols were decreased and 20:5n3 and 22:6n3 diols, epoxides, and alcohols were increased in PMW given fish oil. GM analysis revealed that n-3 PUFA supplementation increased renal steroid hormone and proteolytic metabolite levels in PMW. Herein, we confirm that gene targets of the EC system, previously found as modifiable by n-3 PUFA result in changes in the levels of ECs and OLs in PMW. This study shows phenotypic responses (in levels) to n-3 PUFA supplementation in PMW and increases of n-3 acyl-ethanolamide and n-3-derived OL of clinical considerations in aging.
Collapse
Affiliation(s)
- Bruce A Watkins
- Department of Nutrition, University of California, Davis, Davis, CA, United States; Center on Aging, University of Connecticut Health Center, Farmington, CT, United States.
| | - Jeffrey Kim
- Genome and Biomedical Sciences Facility, University of California, Davis, Davis, CA, United States.
| | - Anne Kenny
- Center on Aging, University of Connecticut Health Center, Farmington, CT, United States.
| | | | | | - John W Newman
- Department of Nutrition, University of California, Davis, Davis, CA, United States; USDA, ARS, WHNRC, Davis, CA, United States.
| |
Collapse
|
53
|
Ticinesi A, Meschi T, Lauretani F, Felis G, Franchi F, Pedrolli C, Barichella M, Benati G, Di Nuzzo S, Ceda GP, Maggio M. Nutrition and Inflammation in Older Individuals: Focus on Vitamin D, n-3 Polyunsaturated Fatty Acids and Whey Proteins. Nutrients 2016; 8:186. [PMID: 27043616 PMCID: PMC4848655 DOI: 10.3390/nu8040186] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 03/21/2016] [Accepted: 03/22/2016] [Indexed: 12/17/2022] Open
Abstract
Chronic activation of the inflammatory response, defined as inflammaging, is the key physio-pathological substrate for anabolic resistance, sarcopenia and frailty in older individuals. Nutrients can theoretically modulate this phenomenon. The underlying molecular mechanisms reducing the synthesis of pro-inflammatory mediators have been elucidated, particularly for vitamin D, n-3 polyunsaturated fatty acids (PUFA) and whey proteins. In this paper, we review the current evidence emerging from observational and intervention studies, performed in older individuals, either community-dwelling or hospitalized with acute disease, and evaluating the effects of intake of vitamin D, n-3 PUFA and whey proteins on inflammatory markers, such as C-Reactive Protein (CRP), interleukin-1 (IL-1), interleukin-6 (IL-6) and tumor necrosis factor α (TNF-α). After the analysis, we conclude that there is sufficient evidence for an anti-inflammatory effect in aging only for n-3 PUFA intake, while the few existing intervention studies do not support a similar activity for vitamin D and whey supplements. There is need in the future of large, high-quality studies testing the effects of combined dietary interventions including the above mentioned nutrients on inflammation and health-related outcomes.
Collapse
Affiliation(s)
- Andrea Ticinesi
- Internal Medicine and Critical Subacute Care Unit, Geriatric-Rehabilitation Department, Azienda Ospedaliero-Universitaria di Parma, Via Antonio Gramsci 14, Parma 43126, Italy.
- Department of Clinical and Experimental Medicine, University of Parma, Via Antonio Gramsci 14, Parma 43126, Italy.
| | - Tiziana Meschi
- Internal Medicine and Critical Subacute Care Unit, Geriatric-Rehabilitation Department, Azienda Ospedaliero-Universitaria di Parma, Via Antonio Gramsci 14, Parma 43126, Italy.
- Department of Clinical and Experimental Medicine, University of Parma, Via Antonio Gramsci 14, Parma 43126, Italy.
| | - Fulvio Lauretani
- Internal Medicine and Critical Subacute Care Unit, Geriatric-Rehabilitation Department, Azienda Ospedaliero-Universitaria di Parma, Via Antonio Gramsci 14, Parma 43126, Italy.
| | - Giovanna Felis
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, Verona 37134, Italy.
| | - Fabrizio Franchi
- Geriatric Unit, "Guglielmo da Saliceto" Hospital, AUSL Piacenza, Via Taverna 49, Piacenza 29121, Italy.
| | - Carlo Pedrolli
- Dietetics and Clinical Nutrition Unit, Santa Chiara Hospital, Azienda Provinciale per i Servizi Sanitari Provincia Autonoma di Trento, Largo Medaglie d'Oro 9, Trento 38122, Italy.
| | - Michela Barichella
- Parkinson Institute, Azienda Socio-Sanitaria Territoriale "Gaetano Pini"-C.T.O., Via Bignami 1, Milan 20126, Italy.
| | - Giuseppe Benati
- Geriatric Unit, Ospedale G.B. Morgagni-L. Pierantoni, Via Carlo Forlanini 34, Forlì 47121, Italy.
| | - Sergio Di Nuzzo
- Department of Clinical and Experimental Medicine, University of Parma, Via Antonio Gramsci 14, Parma 43126, Italy.
| | - Gian Paolo Ceda
- Department of Clinical and Experimental Medicine, University of Parma, Via Antonio Gramsci 14, Parma 43126, Italy.
- Clinical Geriatrics Unit, Geriatric-Rehabilitation Department, Azienda Ospedaliero-Universitaria di Parma, Via Antonio Gramsci 14, Parma 43126, Italy.
| | - Marcello Maggio
- Department of Clinical and Experimental Medicine, University of Parma, Via Antonio Gramsci 14, Parma 43126, Italy.
- Clinical Geriatrics Unit, Geriatric-Rehabilitation Department, Azienda Ospedaliero-Universitaria di Parma, Via Antonio Gramsci 14, Parma 43126, Italy.
| |
Collapse
|
54
|
Abstract
Osteoporosis is a global health problem that leads to an increased incidence of fragility fracture. Recent dietary patterns of Western populations include higher than recommended intakes of n-6 (ω-6) polyunsaturated fatty acids (PUFAs) relative to n-3 (ω-3) PUFAs that may result in a chronic state of sterile whole body inflammation. Findings from human bone cell culture experiments have revealed both benefits and detriments to bone-related outcomes depending on the quantity and source of PUFAs. Findings from observational and randomized controlled trials suggest that higher fatty fish intake is strongly linked with reduced risk of fragility fracture. Moreover, human studies largely support a greater intake of total PUFAs, total n-6 (ω-6) fatty acid, and total n-3 (ω-3) fatty acid for higher bone mineral density and reduced risk of fragility fracture. Less consistent evidence has been observed when investigating the role of long chain n-3 (ω-3) PUFAs or the ratio of n-6 (ω-6) PUFAs to n-3 (ω-3) PUFAs. Aspects to consider when interpreting the current literature involve participant characteristics, study duration, diet assessment tools, and the primary outcome measure.
Collapse
Affiliation(s)
- Amanda B Longo
- Center for Bone and Muscle Health, and Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, Canada
| | - Wendy E Ward
- Center for Bone and Muscle Health, and Department of Kinesiology, Faculty of Applied Health Sciences, Brock University, St. Catharines, Canada
| |
Collapse
|
55
|
Choi E, Park Y. The Association between the Consumption of Fish/Shellfish and the Risk of Osteoporosis in Men and Postmenopausal Women Aged 50 Years or Older. Nutrients 2016; 8:113. [PMID: 26927165 PMCID: PMC4808843 DOI: 10.3390/nu8030113] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 01/25/2016] [Accepted: 02/18/2016] [Indexed: 01/22/2023] Open
Abstract
Fish rich in n-3 polyunsaturated fatty acids have been suggested to have a favorable effect on bone health, but previous epidemiologic studies have shown inconsistent results. The purpose of the present study was to investigate the hypothesis that the consumption of fish and shellfish is positively associated with bone mass and negatively associated with the risk of osteoporosis in Koreans and Americans. Men and postmenopausal women ≥50 years old from the Korean National Health and Nutrition Examination Survey 2008–2011 (n = 7154) and the National Health and Nutrition Examination Survey 2007–2010 (n = 2658) were included. There was a positive correlation between the consumption of fish and shellfish and bone mineral density (BMD) of the total femur, femoral neck, and lumbar spine in Koreans. Consistently, multivariate logistic regression analysis showed a significant association between intake of fish and shellfish and the risk of osteoporosis in Koreans but not in Americans. Consumption of fish and shellfish was 4–5 times higher in Koreans than Americans in the present study. In conclusion, intake of fish and shellfish was associated with BMD and the risk of osteoporosis in Koreans but not in Americans, suggesting that a minimum intake level of fish and shellfish might be recommended to protect against bone loss and osteoporosis.
Collapse
Affiliation(s)
- Eunjin Choi
- Department of Food and Nutrition, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea.
| | - Youngsoon Park
- Department of Food and Nutrition, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea.
| |
Collapse
|
56
|
Hibler EA, Sardo Molmenti CL, Dai Q, Kohler LN, Warren Anderson S, Jurutka PW, Jacobs ET. Physical activity, sedentary behavior, and vitamin D metabolites. Bone 2016; 83:248-255. [PMID: 26620084 PMCID: PMC4795004 DOI: 10.1016/j.bone.2015.11.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 11/04/2015] [Accepted: 11/22/2015] [Indexed: 01/29/2023]
Abstract
Physical activity is associated with circulating 25-hydroxyvitamin D (25(OH)D). However, the influence of activity and/or sedentary behavior on the biologically active, seco-steroid hormone 1α,25-dihydroxyvitamin D (1,25(OH)2D) is unknown. We conducted a cross-sectional analysis among ursodeoxycholic acid (UDCA) randomized trial participants (n=876) to evaluate associations between physical activity, sedentary behavior, and circulating vitamin D metabolite concentrations. Continuous vitamin D metabolite measurements and clinical thresholds were evaluated using multiple linear and logistic regression models, mutually adjusted for either 1,25(OH)2D or 25(OH)D and additional confounding factors. A statistically significant linear association between 1,25(OH)2D and moderate-vigorous physical activity per week was strongest among women (β (95% CI): 3.10 (1.51-6.35)) versus men (β (95% CI): 1.35 (0.79-2.29)) in the highest tertile of activity compared to the lowest (p-interaction=0.003). Furthermore, 25(OH)D was 1.54ng/ml (95% CI 1.09-1.98) higher per hour increase in moderate-vigorous activity (p=0.001) and odds of sufficient 25(OH)D status was higher among physically active participants (p=0.001). Sedentary behavior was not significantly associated with either metabolite in linear regression models, nor was a statistically significant interaction by sex identified. The current study identified novel associations between physical activity and serum 1,25(OH)2D levels, adjusted for 25(OH)D concentrations. These results identify the biologically active form of vitamin D as a potential physiologic mechanism related to observed population-level associations between moderate-vigorous physical activity with bone health and chronic disease risk. However, future longitudinal studies are needed to further evaluate the role of physical activity and vitamin D metabolites in chronic disease prevention.
Collapse
Affiliation(s)
- Elizabeth A Hibler
- Division of Epidemiology, Department of Medicine, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN; Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ; University of Arizona Cancer Center, University of Arizona, Tucson, AZ.
| | - Christine L Sardo Molmenti
- Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York NY
| | - Qi Dai
- Division of Epidemiology, Department of Medicine, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN
| | - Lindsay N Kohler
- Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ
| | - Shaneda Warren Anderson
- Division of Epidemiology, Department of Medicine, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN
| | - Peter W Jurutka
- School of Mathematical and Natural Sciences, Arizona State University, Phoenix, AZ
| | - Elizabeth T Jacobs
- Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ; University of Arizona Cancer Center, University of Arizona, Tucson, AZ
| |
Collapse
|
57
|
Boudenot A, Maurel DB, Pallu S, Ingrand I, Boisseau N, Jaffré C, Portier H. Quick benefits of interval training versus continuous training on bone: a dual-energy X-ray absorptiometry comparative study. Int J Exp Pathol 2016; 96:370-7. [PMID: 26754273 DOI: 10.1111/iep.12155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 09/06/2015] [Indexed: 12/01/2022] Open
Abstract
To delay age-related bone loss, physical activity is recommended during growth. However, it is unknown whether interval training is more efficient than continuous training to increase bone mass both quickly and to a greater extent. The aim of this study was to compare the effects of a 10-week interval training regime with a 14-week continuous training regime on bone mineral density (BMD). Forty-four male Wistar rats (8 weeks old) were separated into four groups: control for 10 weeks (C10), control for 14 weeks (C14), moderate interval training for 10 weeks (IT) and moderate continuous training for 14 weeks (CT). Rats were exercised 1 h/day, 5 day/week. Body composition and BMD of the whole body and femur respectively were assessed by dual-energy X-ray absorptiometry at baseline and after training to determine raw gain and weight-normalized BMD gain. Both trained groups had lower weight and fat mass gain when compared to controls. Both trained groups gained more BMD compared to controls when normalized to body weight. Using a 30% shorter training period, the IT group showed more than 20% higher whole body and femur BMD gains compared to the CT. Our data suggest that moderate IT was able to produce faster bone adaptations than moderate CT.
Collapse
Affiliation(s)
- Arnaud Boudenot
- Movement to Health - Euromov, UFR STAPS, Université de Montpellier 1, Montpellier, France.,UMR-S658 INSERM, Université d'Orléans, Orléans, France
| | - Delphine B Maurel
- UMR-S658 INSERM, Université d'Orléans, Orléans, France.,Laboratory of Oral Biology, School of Dentistry, Kansas City, MO, USA
| | - Stéphane Pallu
- UMR-S658 INSERM, Université d'Orléans, Orléans, France.,UMR 7052 Laboratory for Osteoarticular Bioengineering and Bioimaging, CNRS, Univ Paris Diderot, Sorbonne Paris Cité, École nationale vétérinaire d'Alfort, Paris, France.,Université d'Orléans, Orléans, France
| | - Isabelle Ingrand
- Epidémiologie et Biostatistique, Inserm CIC 802, CHU Poitiers, Université de Poitiers, Poitiers, France
| | - Nathalie Boisseau
- Laboratory of Metabolic Adaptations to Exercise under Physiological and Pathological Conditions, EA 3533, Clermont University, Blaise Pascal University BP 10448, Clermont-Ferrand, France
| | - Christelle Jaffré
- UMR-S658 INSERM, Université d'Orléans, Orléans, France.,EA 3300, Adaptations Physiologiques à l'Exercice et Réadaptation à l'Effort, UFR des Sciences du Sport, Université de Picardie Jules Verne, 80025, Amiens, France
| | - Hugues Portier
- UMR 7052 Laboratory for Osteoarticular Bioengineering and Bioimaging, CNRS, Univ Paris Diderot, Sorbonne Paris Cité, École nationale vétérinaire d'Alfort, Paris, France.,Université d'Orléans, Orléans, France
| |
Collapse
|
58
|
Centi AJ, Booth SL, Gundberg CM, Saltzman E, Nicklas B, Shea MK. Osteocalcin carboxylation is not associated with body weight or percent fat changes during weight loss in post-menopausal women. Endocrine 2015; 50:627-32. [PMID: 25963022 PMCID: PMC4643414 DOI: 10.1007/s12020-015-0618-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Accepted: 04/27/2015] [Indexed: 12/28/2022]
Abstract
Osteocalcin (OC) is a vitamin K-dependent bone protein used as a marker of bone formation. Mouse models have demonstrated a role for the uncarboxylated form of OC (ucOC) in energy metabolism, including energy expenditure and adiposity, but human data are equivocal. The purpose of this study was to determine the associations between changes in measures of OC and changes in body weight and percent body fat in obese, but otherwise healthy post-menopausal women undergoing a 20-week weight loss program. All participants received supplemental vitamins K and D and calcium. Body weight and body fat percentage (%BF) were assessed before and after the intervention. Serum OC [(total (tOC), ucOC, percent uncarboxylated (%ucOC)], and procollagen type 1N-terminal propeptide (P1NP; a measure of bone formation) were measured. Women lost an average of 10.9 ± 3.9 kg and 4 %BF. Serum concentrations of tOC, ucOC, %ucOC, and P1NP did not significantly change over the twenty-week intervention, nor were these measures associated with changes in weight (all p > 0.27) or %BF (all p > 0.54). Our data do not support an association between any serum measure of OC and weight or %BF loss in post-menopausal women supplemented with nutrients implicated in bone health.
Collapse
Affiliation(s)
- Amanda J Centi
- Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA
| | - Sarah L Booth
- Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA.
| | | | - Edward Saltzman
- Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA
| | - Barbara Nicklas
- Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA
| | - M Kyla Shea
- Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA
| |
Collapse
|
59
|
Ennour-Idrissi K, Maunsell E, Diorio C. Effect of physical activity on sex hormones in women: a systematic review and meta-analysis of randomized controlled trials. Breast Cancer Res 2015; 17:139. [PMID: 26541144 PMCID: PMC4635995 DOI: 10.1186/s13058-015-0647-3] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 10/19/2015] [Indexed: 12/21/2022] Open
Abstract
INTRODUCTION Exposure to high levels of endogenous estrogens is a main risk factor for breast cancer in women, and in observational studies was found to be inversely associated with physical activity. The objective of the present study is to determine the effect of physical activity interventions on sex hormone levels in healthy women. METHODS Electronic databases (MEDLINE, EMBASE, CENTRAL), from inception to December 2014, and reference lists of relevant reviews and clinical trials were searched, with no language restrictions applied. Randomized controlled trials (RCTs) were included if they compared any type of exercise intervention to no intervention or other interventions, and assessed the effects on estrogens, androgens or the sex hormone binding globulin (SHBG) in cancer-free women. Following the method described in the Cochrane Handbook for Systematic Reviews of Interventions, data on populations, interventions, and outcomes were extracted, and combined using the inverse-variance method and a random-effects model. A pre-established protocol was drawn up, in which the primary outcome was the difference in circulating estradiol concentrations between the physical activity (experimental) and the control groups after intervention. Pre-specified subgroup analyses and sensitivity analysis according to the risk of bias were conducted. RESULTS Data suitable for quantitative synthesis were available from 18 RCTs (1994 participants) for total estradiol and from 5 RCTs (1245 participants) for free estradiol. The overall effect of physical activity was a statistically significant decrease of both total estradiol (standardized mean difference [SMD] -0.12; 95 % confidence interval [CI] -0.20 to -0.03; P = 0.01; I (2) = 0 %) and free estradiol (SMD -0.20; 95 % CI -0.31 to -0.09; P = 0.0005; I (2) = 0 %). Subgroup analyses suggest that this effect is independent of menopausal status and is more noticeable for non-obese women and for high intensity exercise. Meta-analysis for secondary outcomes found that physical activity induces a statistically significant decline of free testosterone, androstenedione, dehydroepiandrosterone-sulfate and adiposity markers, while a significant increase of SHBG was observed. CONCLUSIONS Although the effect is relatively modest, physical activity induces a decrease in circulating sex hormones and this effect is not entirely explained by weight loss. The findings emphasize the benefits of physical activity for women.
Collapse
Affiliation(s)
- Kaoutar Ennour-Idrissi
- Axe Oncologie, Centre de recherche du CHU de Québec-Université Laval, St-Sacrement Hospital, 1050 chemin Sainte-Foy, Quebec City, QC, Canada, G1S 4L8. .,Centre de recherche sur le cancer, Université Laval, St-Sacrement Hospital, 1050 chemin Sainte-Foy, Quebec City, QC, Canada, G1S 4L8. .,Département de médecine sociale et préventive, Faculté de médecine, Pavillon Ferdinand-Vandry, Loc 2428, Université Laval, 1050 avenue de la Médecine, Quebec City, QC, Canada, G1V 0A6.
| | - Elizabeth Maunsell
- Axe Oncologie, Centre de recherche du CHU de Québec-Université Laval, St-Sacrement Hospital, 1050 chemin Sainte-Foy, Quebec City, QC, Canada, G1S 4L8. .,Centre de recherche sur le cancer, Université Laval, St-Sacrement Hospital, 1050 chemin Sainte-Foy, Quebec City, QC, Canada, G1S 4L8. .,Département de médecine sociale et préventive, Faculté de médecine, Pavillon Ferdinand-Vandry, Loc 2428, Université Laval, 1050 avenue de la Médecine, Quebec City, QC, Canada, G1V 0A6. .,Centre des Maladies du Sein Deschênes-Fabia, St-Sacrement Hospital, 1050 chemin Sainte-Foy, Québec City, QC, Canada, G1S 4L8.
| | - Caroline Diorio
- Axe Oncologie, Centre de recherche du CHU de Québec-Université Laval, St-Sacrement Hospital, 1050 chemin Sainte-Foy, Quebec City, QC, Canada, G1S 4L8. .,Centre de recherche sur le cancer, Université Laval, St-Sacrement Hospital, 1050 chemin Sainte-Foy, Quebec City, QC, Canada, G1S 4L8. .,Département de médecine sociale et préventive, Faculté de médecine, Pavillon Ferdinand-Vandry, Loc 2428, Université Laval, 1050 avenue de la Médecine, Quebec City, QC, Canada, G1V 0A6. .,Centre des Maladies du Sein Deschênes-Fabia, St-Sacrement Hospital, 1050 chemin Sainte-Foy, Québec City, QC, Canada, G1S 4L8.
| |
Collapse
|
60
|
Delfan M, Ebrahim K, Baesi F, Mirakhori Z, Ghalamfarsa G, Bakhshaei P, Saboor-Yaraghi AA, Razavi A, Setayesh M, Yousefi M, Jadidi-Niaragh F. The immunomodulatory effects of fish-oil supplementation in elite paddlers: A pilot randomized double blind placebo-controlled trial. Prostaglandins Leukot Essent Fatty Acids 2015; 99:35-40. [PMID: 26026502 DOI: 10.1016/j.plefa.2015.04.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 04/28/2015] [Accepted: 04/30/2015] [Indexed: 11/17/2022]
Abstract
BACKGROUND Physical exercise can induce imbalance of different cytokines by leading them towards an inflammatory and immunosuppressive milieu. Fish-oil (FO) supplementation may modulate the mentioned skewed balance following intense exercise. Therefore, we decided to investigate the effect of intense physical exercise and FO supplementation on cytokine production and helper T (Th) cell phenotype in male elite paddlers. SUBJECTS AND METHODS Male elite paddlers consumed 6 g/day of either FO capsules (n=11) containing 3.6 g long chain n-3 polyunsaturated fatty acids (1.2 g docosahexaenoic acid and 2.4 g eicosapentaenoic acid) or placebo capsules (n=11) for 4 weeks. The paddlers simultaneously undertook a program of increasing exercise. Blood samples were taken from all the subjects 48 h before and after the 4 weeks of supplementation. RESULTS Our results show that while FO supplementation decreases the production of tumor necrosis factor (TNF)-α and interleukin (IL)-1β in the elite paddlers, it increases the production of IL-6. On the other hand, while there was no change in IL-4 secretion, the production of interferon (IFN)-γ was significantly decreased after 4 weeks FO consumption. We also showed that the production of IL-10 was significantly higher in the FO group compared to the placebo. Finally, we found that fish-oil consumption shifts the balance between Th cells towards Th2 phenotype during intensive exercise. CONCLUSION Our results suggest that the consumption of n-3 polyunsaturated fatty acids during intense exercise can induce the anti-inflammatory and immunosuppressive cytokine networks that are associated with a reduced Th1/Th2 ratio in elite paddlers.
Collapse
Affiliation(s)
- Maryam Delfan
- Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
| | - Khosro Ebrahim
- Faculty of Physical Education and Sport Sciences, Shahid Beheshti University, Tehran, Iran
| | - Fatemeh Baesi
- Physical Education and Sport Sciences Department, Faculty of Humanities, Tarbiat Modares University, Tehran, Iran
| | - Zahra Mirakhori
- Physical Education and Sport Sciences Department, Faculty of Humanities, Tarbiat Modares University, Tehran, Iran
| | - Ghasem Ghalamfarsa
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Peyman Bakhshaei
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali Akbar Saboor-Yaraghi
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Razavi
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Setayesh
- Biology Department, School of Sciences, Shiraz University, Shiraz, Iran
| | - Mehdi Yousefi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farhad Jadidi-Niaragh
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
61
|
Kasonga AE, Deepak V, Kruger MC, Coetzee M. Arachidonic acid and docosahexaenoic acid suppress osteoclast formation and activity in human CD14+ monocytes, in vitro. PLoS One 2015; 10:e0125145. [PMID: 25867515 PMCID: PMC4395026 DOI: 10.1371/journal.pone.0125145] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 03/14/2015] [Indexed: 01/02/2023] Open
Abstract
An unbalanced diet can have adverse effects on health. Long chain polyunsaturated fatty acids (LCPUFAs) have been the focus of research owing to their necessity of inclusion in a healthy diet. However, the effects of LCPUFAs on human osteoclast formation and function have not been explored before. A human CD14+ monocyte differentiation model was used to elucidate the effects of an ω-3 LCPUFA, docosahexaenoic acid (DHA), and an ω-6 LCPUFA, arachidonic acid (AA), on osteoclast formation and activity. CD14+ monocytes were isolated from peripheral blood of healthy donors and stimulated with macrophage colony stimulating factor and receptor activator of nuclear factor kappa-B ligand to generate osteoclasts. Data from this study revealed that both the LCPUFAs decreased osteoclast formation potential of CD14+ monocytes in a dose-dependent manner when treated at an early stage of differentiation. Moreover, when exposed at a late stage of osteoclast differentiation AA and DHA impaired the bone resorptive potential of mature osteoclasts without affecting osteoclast numbers. AA and DHA abrogated vitronectin receptor expression in differentiating as well as mature osteoclasts. In contrast, the degree of inhibition for calcitonin receptor expression varied between the LCPUFAs with only AA causing inhibition during osteoclast differentiation. Furthermore, AA and DHA down regulated the expression of key osteoclast-specific genes in differentiating as well as mature osteoclasts. This study demonstrates for the first time that LCPUFAs can modulate osteoclast formation and function in a human primary osteoclast cell line.
Collapse
Affiliation(s)
- Abe E. Kasonga
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Vishwa Deepak
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Marlena C. Kruger
- School of Food and Nutrition, Massey Institute of Food Science and Technology, Massey University, Palmerston North, New Zealand
- Department of Human Nutrition and Associate of the Institute for Food, Nutrition and Well-being, University of Pretoria, Pretoria, South Africa
| | - Magdalena Coetzee
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- * E-mail:
| |
Collapse
|
62
|
Wauquier F, Léotoing L, Philippe C, Spilmont M, Coxam V, Wittrant Y. Pros and cons of fatty acids in bone biology. Prog Lipid Res 2015; 58:121-45. [PMID: 25835096 DOI: 10.1016/j.plipres.2015.03.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 03/06/2015] [Accepted: 03/23/2015] [Indexed: 12/12/2022]
Abstract
Despite the growing interest in deciphering the causes and consequences of obesity-related disorders, the mechanisms linking fat intake to bone behaviour remain unclear. Since bone fractures are widely associated with increased morbidity and mortality, most notably in elderly and obese people, bone health has become a major social and economic issue. Consistently, public health system guidelines have encouraged low-fat diets in order to reduce associated complications. However, from a bone point of view, mechanisms linking fat intake to bone alteration remain quite controversial. Thus, after more than a decade of dedicated studies, this timely review offers a comprehensive overview of the relationships between bone and fatty acids. Using clinical evidences as a starting-point to more complex molecular elucidation, this work highlights the complexity of the system and reveals that bone alteration that cannot be solved simply by taking ω-3 pills. Fatty acid effects on bone metabolism can be both direct and indirect and require integrated investigations. Furthermore, even at the level of a single cell, one fatty acid is able to trigger several different independent pathways (receptors, metabolites…) which may all have a say in the final cellular metabolic response.
Collapse
Affiliation(s)
- Fabien Wauquier
- INRA, UMR 1019, UNH, CRNH Auvergne, F-63009 Clermont-Ferrand, France; Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France; Equipe Alimentation, Squelette et Métabolismes, France
| | - Laurent Léotoing
- INRA, UMR 1019, UNH, CRNH Auvergne, F-63009 Clermont-Ferrand, France; Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France; Equipe Alimentation, Squelette et Métabolismes, France
| | - Claire Philippe
- INRA, UMR 1019, UNH, CRNH Auvergne, F-63009 Clermont-Ferrand, France; Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France; Equipe Alimentation, Squelette et Métabolismes, France
| | - Mélanie Spilmont
- INRA, UMR 1019, UNH, CRNH Auvergne, F-63009 Clermont-Ferrand, France; Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France; Equipe Alimentation, Squelette et Métabolismes, France
| | - Véronique Coxam
- INRA, UMR 1019, UNH, CRNH Auvergne, F-63009 Clermont-Ferrand, France; Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France; Equipe Alimentation, Squelette et Métabolismes, France
| | - Yohann Wittrant
- INRA, UMR 1019, UNH, CRNH Auvergne, F-63009 Clermont-Ferrand, France; Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France; Equipe Alimentation, Squelette et Métabolismes, France.
| |
Collapse
|
63
|
Winklmayr M, Kluge C, Winklmayr W, Küchenhoff H, Steiner M, Ritter M, Hartl A. Radon balneotherapy and physical activity for osteoporosis prevention: a randomized, placebo-controlled intervention study. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2015; 54:123-136. [PMID: 25274266 DOI: 10.1007/s00411-014-0568-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 09/11/2014] [Indexed: 06/03/2023]
Abstract
Low-dose radon hyperthermia balneo treatment (LDRnHBT) is applied as a traditional measure in the non-pharmacological treatment of rheumatic diseases in Europe. During the last decades, the main approach of LDRnHBT was focused on the treatment of musculoskeletal disorders, but scientific evidence for the biological background of LDRnHBT is weak. Recently, evidence emerged that LDRnHBT influences bone metabolism. We investigated, whether combined LDRnHBT and exercise treatment has an impact on bone metabolism and quality of life in a study population in an age group at risk for developing osteoporosis. This randomized, double-blind, placebo-controlled trial comprised guided hiking tours and hyperthermia treatment in either radon thermal water (LDRnHBT) or radon-free thermal water (PlaceboHBT). Markers of bone metabolism, quality of life and somatic complaints were evaluated. Statistics was performed by linear regression and a linear mixed model analysis. Significant changes over time were observed for most analytes investigated as well as an improvement in self-assessed health in both groups. No significant impact from the LDRnHBT could be observed. After 6 months, the LDRnHBT group showed a slightly stronger reduction of the osteoclast stimulating protein receptor activator of nuclear kB-ligand compared to the PlaceboHBT group, indicating a possible trend. A combined hyperthermia balneo and exercise treatment has significant immediate and long-term effects on regulators of bone metabolism as well as somatic complaints. LDRnHBT and placeboHBT yielded statistically equal outcomes.
Collapse
Affiliation(s)
- Martina Winklmayr
- Institute of Physiology and Pathophysiology, Paracelsus Medical University Salzburg, Strubergasse 21, 5020, Salzburg, Austria
| | - Christian Kluge
- Statistical Consulting Unit, Department of Statistics, Ludwig Maximilians Universität München, Akademiestr.1, 80799, München, Germany
| | | | - Helmut Küchenhoff
- Statistical Consulting Unit, Department of Statistics, Ludwig Maximilians Universität München, Akademiestr.1, 80799, München, Germany
| | - Martina Steiner
- Institute of Physiology and Pathophysiology, Paracelsus Medical University Salzburg, Strubergasse 21, 5020, Salzburg, Austria
| | - Markus Ritter
- Gastein Research Institute, Paracelsus Medical University, Schareckstrasse 4, 5640, Bad Gastein, Austria
| | - Arnulf Hartl
- Institute of Physiology and Pathophysiology, Paracelsus Medical University Salzburg, Strubergasse 21, 5020, Salzburg, Austria.
| |
Collapse
|
64
|
Tartibian B, FitzGerald LZ, Azadpour N, Maleki BH. A randomized controlled study examining the effect of exercise on inflammatory cytokine levels in post-menopausal women. Post Reprod Health 2015; 21:9-15. [PMID: 25710943 DOI: 10.1177/2053369114565708] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Elevated plasma levels of inflammatory cytokine are associated with body mass index, percent body fat and increased morbidity. Evidence suggests that higher levels of physical activity result in beneficial anti-inflammatory effects compared to a more sedentary lifestyle. Further, reproductive hormones are associated with inflammaotry cytokines. This study examined the effect of a 16-week low-moderate intensity exercise (EX) programme on reproductive hormones and inflammatory cytokines. METHODS Twenty-eight healthy, sedentary post-menopausal women were randomly assigned to EX (n = 14) or control (Con, n = 14) groups. The EX group completed low-moderate intensity treadmill training 25-30 min/day, up to 55% of HRmax, 3-4 days/week, for 16-weeks. Con maintained current physical activity level. Baseline and week-16 serum samples evaluated interleukin-1 beta, interleukin-6, tumor necrosis factor-alpha, C-reactive protein, estradiol, luteinizing hormone and follicular stimulating hormone. RESULTS Post-intervention, the EX group showed a significant decrease in interleukin-1 beta, interleukin-6, tumor necrosis factor-alpha, estradiol, follicular stimulating hormone and luteinizing hormone levels compared to baseline values. No significant changes were observed in Con. Significant correlations were observed between IL-1β, IL-6, TNF-α, and reproductive hormones, both before and after the exercise intervention. CONCLUSION Findings suggest that a low-moderate intensity EX programme decreases cytokines in relation to reproductive hormones in post-menopausal women. These findings support the role of EX in reducing inflammatory markers and improved reproductive hormones in post-menopausal women.
Collapse
Affiliation(s)
- Bakhtyar Tartibian
- Department of Exercise Physiology, Faculty of Physical Education and Sport Science, Urmia University, Urmia, Iran
| | | | | | - Behzad Hajizadeh Maleki
- Department of Exercise Physiology, Faculty of Physical Education and Sport Science, Urmia University, Urmia, Iran
| |
Collapse
|
65
|
Daly RM, Duckham RL, Gianoudis J. Evidence for an interaction between exercise and nutrition for improving bone and muscle health. Curr Osteoporos Rep 2014; 12:219-26. [PMID: 24664904 DOI: 10.1007/s11914-014-0207-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Regular exercise and adequate nutrition, particularly dietary calcium, vitamin D, and protein, are prescribed as strategies to optimize peak bone mass and maintain bone and muscle health throughout life. Although the mechanism of action of exercise and nutrition on bone and muscle health are different-exercise has a site-specific modifying effect, whereas nutrition has a permissive generalized effect-there is evidence that combining calcium (or calcium rich dairy foods) or dietary protein with exercise can have a synergetic effect on bone mass and muscle health, respectively. However, many questions still remain as to whether there is a threshold level for these nutrients to optimize the exercise-induced gains. Further studies are also needed to investigate whether other dietary factors, such as vitamin D, soy isoflavones or omega-3 fatty acids, or a multinutrient supplement, can enhance the effects of exercise on bone and muscle health.
Collapse
Affiliation(s)
- Robin M Daly
- Centre for Physical Activity and Nutrition Research, School of Exercise and Nutrition Sciences, Deakin University, 221 Burwood Highway, Burwood, Victoria, Australia, 3125,
| | | | | |
Collapse
|
66
|
Zhong X, Gao S, Wang JJ, Dong L, Huang J, Zhang LL, Wang T. Effects of linseed oil and palm oil on growth performance, tibia fatty acid and biomarkers of bone metabolism in broilers. Br Poult Sci 2014; 55:335-42. [PMID: 24641587 DOI: 10.1080/00071668.2014.891097] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
1. This study was conducted to determine the effects of different dietary fat sources on growth performance, tibia fatty acids and biomarkers of bone metabolism in broilers. 2. One-d-old commercial Arbor Acres broilers were fed with a maize-soya bean basal diet for 42 d, supplemented with oils according to the following 5 treatments: lard (lard group); linseed oil (linseed oil group); palm oil (palm oil group); linseed oil + palm oil (60:40 or 40:60 w/w, LP-1 group and LP-2 group, respectively). 3. No significant differences in weight gain, feed intake and gain/feed ratio were observed between the lard and linseed oil groups. Birds fed on palm oil had significantly greater weight gain and feed intake than those fed on lard or linseed oil. Growth performance in LP-1 and LP-2 was significantly greater than that of single-oil groups. 4. Tibia growth and bone characteristics were not influenced by supplementation with lard, linseed oil, or palm oil alone, but broilers fed on a mixture of fats had significantly greater tibia weight and length compared to broilers fed on linseed oil. Bone mineral density in tibia was significantly increased in LP-1 and LP-2 groups. 5. Supplementation of linseed oil alone or in combination with palm oil enhanced apparent digestibility of calcium, reduced serum calcium and increased tibia calcium concentrations. Moreover, supplementation with linseed oil alone or in combination with palm oil had a positive effect on biomarkers of bone growth. 6. The combination of linseed and palm oils was beneficial for growth performance, tibia growth and biomarkers of bone metabolism.
Collapse
Affiliation(s)
- X Zhong
- a College of Animal Science & Technology , Nanjing Agricultural University , Nanjing , Jiangsu , China
| | | | | | | | | | | | | |
Collapse
|
67
|
A new insight to bone turnover: role of ω-3 polyunsaturated fatty acids. ScientificWorldJournal 2013; 2013:589641. [PMID: 24302863 PMCID: PMC3834626 DOI: 10.1155/2013/589641] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 09/24/2013] [Indexed: 11/29/2022] Open
Abstract
Background. Evidence has shown that long-chain polyunsaturated fatty acids (LCPUFA), especially the ω-3 fatty acids such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are beneficial for bone health and turnover. Objectives. This review summarizes findings from both in vivo and in vitro studies and the effects of LC PUFA on bone metabolism, as well as the relationship with the oxidative stress, the inflammatory process, and obesity. Results. Some studies in humans indicate that LCPUFA can increase bone formation, affect peak bone mass in adolescents, and reduce bone loss. However, the cellular mechanisms of action of the LCPUFA are complex and involve modulation of fatty acid metabolites such as prostaglandins, resolvins and protectins, several signaling pathways, cytokines, and growth factors, although in certain aspects there is still some controversy. LCPUFA affect receptor activator of nuclear factor κβ (RANK), a receptor found on the osteoclast, causing bone resorption, which controls osteoclast formation. Conclusions. Since fatty acids are an endogenous source of reactive oxygen species, free radicals alter the process of bone turnover; however, although there are clinical evidences linking bone metabolism and dietary lipids, more clinical trials are necessary to prove whether ω-3 PUFA supplementation plays a major role in bone health.
Collapse
|
68
|
González-Sarrías A, Larrosa M, García-Conesa MT, Tomás-Barberán FA, Espín JC. Nutraceuticals for older people: facts, fictions and gaps in knowledge. Maturitas 2013; 75:313-34. [PMID: 23791247 DOI: 10.1016/j.maturitas.2013.05.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 05/08/2013] [Accepted: 05/09/2013] [Indexed: 12/14/2022]
Abstract
In the last decades nutraceuticals have entered the health market as an easy and attractive means of preventing diseases. These products are of interest for an increasingly health-concerned society and may be especially relevant for preventing or delaying a number of age-related diseases, i.e. arthritis, cancer, metabolic and cardiovascular diseases, osteoporosis, cataracts, brain disorders, etc. Nutraceuticals are marketed in a variety of forms, composition and potential applications which have made their definition ambiguous and their use uncontrolled and poorly funded. Although epidemiological, animal and in vitro studies have given evidence of the potential benefits of some of these nutraceuticals or of their components, definitive proof of their effects in appropriate human clinical trials is still lacking in most cases, more critically among people above 65 years of age. We cover the well-established nutraceuticals (polyvitamins, omega-3 fatty acids, etc.) and will focus on many other 'novel' commercial nutraceuticals where the scientific evidence is more limited (food extracts, polyphenols, carotenoids, etc.). Solid scientific evidence has been reported only for a few nutraceuticals, which have some health claims approved by the European Food Safety Authority (EFSA). Further well-designed trials are needed to improve the current knowledge on the health benefits of nutraceuticals in the elderly. Overall, there are some facts, a lot of fiction and many gaps in the knowledge of nutraceutical benefits.
Collapse
Affiliation(s)
- Antonio González-Sarrías
- Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, Murcia, Spain.
| | | | | | | | | |
Collapse
|
69
|
Smith SM, McCoy T, Gazda D, Morgan JLL, Heer M, Zwart SR. Space flight calcium: implications for astronaut health, spacecraft operations, and Earth. Nutrients 2012; 4:2047-68. [PMID: 23250146 PMCID: PMC3546622 DOI: 10.3390/nu4122047] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 11/13/2012] [Accepted: 12/10/2012] [Indexed: 11/21/2022] Open
Abstract
The space flight environment is known to induce bone loss and, subsequently, calcium loss. The longer the mission, generally the more bone and calcium are lost. This review provides a history of bone and calcium studies related to space flight and highlights issues related to calcium excretion that the space program must consider so that urine can be recycled. It also discusses a novel technique using natural stable isotopes of calcium that will be helpful in the future to determine calcium and bone balance during space flight.
Collapse
Affiliation(s)
- Scott M. Smith
- Human Health and Performance Directorate, NASA Lyndon B. Johnson Space Center, Houston, TX 77058, USA; E-Mail:
| | - Torin McCoy
- Human Health and Performance Directorate, NASA Lyndon B. Johnson Space Center, Houston, TX 77058, USA; E-Mail:
| | - Daniel Gazda
- Wyle Science, Technology & Engineering Group, Houston, TX 77058, USA; E-Mail:
| | - Jennifer L. L. Morgan
- Oak Ridge Associated Universities/NASA Post-Doctoral Fellow, NASA Lyndon B. Johnson Space Center, Houston, TX 77058, USA; E-Mail:
| | - Martina Heer
- Profil, 41460 Neuss, Germany; E-Mail:
- University of Bonn, 53115 Bonn, Germany
| | - Sara R. Zwart
- Division of Space Life Sciences, Universities Space Research Association, Houston, TX 77058, USA; E-Mail:
| |
Collapse
|
70
|
Cicero AFG, Reggi A, Parini A, Borghi C. Application of polyunsaturated fatty acids in internal medicine: beyond the established cardiovascular effects. Arch Med Sci 2012; 8. [PMID: 23185186 PMCID: PMC3506235 DOI: 10.5114/aoms.2012.31613] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
n-3 Polyunsaturated fatty acids (PUFAs) are organic acids, essential for mammals, whose deficiency is associated with different diseases. The American Heart Association recommends that all adults increase food-derived n-3 PUFA intake and also suggests that patients with documented coronary heart disease consume approximately 1 g of eicosapentaenoic acid and docosahexaenoic acid per day. However, recent evidence broadens their potential application to many other health disorders directly or indirectly associated with cardiovascular disease risk such as rheumatological diseases, mood depression, chronic kidney disease, chronic inflammatory lung diseases and others. These effects seem to be largely dependent on the dosages employed and on the characteristics of the selected patients. The cardiometabolic effects of PUFAs have been largely reviewed elsewhere, so the aim of our review is to point out the potential usefulness of such drugs with pleiotropic effects in the management of the actual typical aging patient, with co-morbidities and multidrug therapies.
Collapse
Affiliation(s)
- Arrigo F G Cicero
- Medical and Surgical Sciences Department, University of Bologna, Italy
| | | | | | | |
Collapse
|
71
|
Moon HJ, Kim TH, Byun DW, Park Y. Positive correlation between erythrocyte levels of n-3 polyunsaturated fatty acids and bone mass in postmenopausal Korean women with osteoporosis. ANNALS OF NUTRITION AND METABOLISM 2012; 60:146-53. [PMID: 22507833 DOI: 10.1159/000337302] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Accepted: 02/13/2012] [Indexed: 11/19/2022]
Abstract
BACKGROUND Osteoporosis, a major health problem among postmenopausal women, is influenced by dietary factors. The purpose of the present study was to evaluate the hypothesis that erythrocyte levels of n-3 polyunsaturated fatty acid (PUFA) and the dietary intake of fish are associated with risk of osteoporosis and correlate with bone mass in postmenopausal Korean women with the disease. METHODS Fifty cases and 100 controls were recruited. Osteoporosis was defined according to the International Society for Clinical Densitometry guideline as a score lower than -2.5 SD below the T-score for lumbar vertebrae L₁-L₄, femoral neck or femoral total. RESULTS The T-score of the femoral neck was positively correlated with erythrocyte levels of n-3 PUFA, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) and the intake of fish, and was negatively correlated with the ratio of n-6/n-3 PUFA after adjusting for age, years after menopause and height. In addition, the risk of osteoporosis was positively associated with erythrocyte levels of saturated fatty acids but negatively associated with EPA + DHA. CONCLUSIONS Erythrocyte levels of n-3 PUFA and the intake of fish were positively correlated with bone mass. In particular, erythrocyte levels of EPA + DHA reduced the risk of osteoporosis in postmenopausal Korean women.
Collapse
Affiliation(s)
- Hyoun-Jung Moon
- Department of Food and Nutrition, Hanyang University, Seoul, South Korea
| | | | | | | |
Collapse
|
72
|
Slivkoff-Clark KM, James AP, Mamo JC. The chronic effects of fish oil with exercise on postprandial lipaemia and chylomicron homeostasis in insulin resistant viscerally obese men. Nutr Metab (Lond) 2012; 9:9. [PMID: 22314022 PMCID: PMC3296659 DOI: 10.1186/1743-7075-9-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Accepted: 02/07/2012] [Indexed: 12/15/2022] Open
Abstract
Background Visceral obesity and insulin resistance are associated with a postprandial accumulation of atherogenic chylomicron remnants that is difficult to modulate with lipid-lowering therapies. Dietary fish oil and exercise are cardioprotective interventions that can significantly modify the metabolism of TAG-rich lipoproteins. In this study, we investigated whether chronic exercise and fish oil act in combination to affect chylomicron metabolism in obese men with moderate insulin resistance. Methods The single blind study tested the effect of fish oil, exercise and the combined treatments on fasting and postprandial chylomicron metabolism. Twenty nine men with metabolic syndrome were randomly assigned to take fish oil or placebo for four weeks, before undertaking an additional 12 week walking program. At baseline and at the end of each treatment, subjects were tested for concentrations of fasting apo B48, plasma lipids and insulin. Postprandial apo B48 and TAG kinetics were also determined following ingestion of a fat enriched meal. Results Combining fish oil and exercise resulted in a significant reduction in the fasting apo B48 concentration, concomitant with attenuation of fasting TAG concentrations and the postprandial TAGIAUC response (p < 0.05). Fish oil by itself reduced the postprandial TAG response (p < 0.05) but not postprandial apo B48 kinetics. Individual treatments of fish oil and exercise did not correspond with improvements in fasting plasma TAG and apo B48. Conclusion Fish oil was shown to independently improve plasma TAG homeostasis but did not resolve hyper-chylomicronaemia. Instead, combining fish oil with chronic exercise reduced the plasma concentration of pro-atherogenic chylomicron remnants; in addition it reduced the fasting and postprandial TAG response in viscerally obese insulin resistant subjects.
Collapse
Affiliation(s)
- Karin M Slivkoff-Clark
- School of Public Health, Curtin Health Innovation Research Institute and the Australian Technology Network, Centre for Metabolic Fitness, Curtin University, Bentley Campus, Kent St, Perth 6102, Australia.
| | | | | |
Collapse
|