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Cagigas ML, Fiorito G, Bertozzi B, Masedunskas A, Cava E, Spelta F, Veronese N, Tosti V, Rajakumar G, Pelaia T, Bullock AD, Figenshau RS, Andriole GL, Fontana L. Effects of protein restriction on insulin-like growth factor (IGF)-1 in men with prostate cancer: results from a randomized clinical trial. Biomark Res 2024; 12:68. [PMID: 39039607 PMCID: PMC11265162 DOI: 10.1186/s40364-024-00613-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Accepted: 07/04/2024] [Indexed: 07/24/2024] Open
Abstract
BACKGROUND Insulin-like growth factor (IGF)-1 and its binding proteins are important in cancer growth, especially in prostate cancer. Observational studies suggest that protein restriction can lower IGF-1 levels. However, it is unclear whether an isocaloric protein-restricted diet affects IGF-1 and IGFBPs in men with prostate cancer. METHODS In this academic, single-center, parallel-group, prospective, randomized, open-label, blinded end-point trial, 38 consenting overweight (BMI 30.5 ± 5.5 kg/m2) men with localized prostate cancer, aged 43-72 years, were randomized (1:1) with permuted blocks to 4-6 weeks of customized isocaloric PR diets (0.8 g protein/kg lean body mass) or their usual diet. Biomarkers influencing cancer biology, including serum IGF-1 and its binding proteins were measured longitudinally. RESULTS Contrary to our hypothesis, feeding individuals an isocaloric protein-restricted diet did not result in a significant reduction in serum IGF-1. Moreover, there was no observed increase in serum IGFBP-1 or IGFBP-3 concentration. CONCLUSION These findings demonstrate that protein restriction without calorie restriction does not reduce serum IGF-1 concentration or increase IGFBP-1 and IGFBP-3 in men with localized prostate cancer. Further research is needed to identify dietary interventions for safely and effectively reducing IGF-1 in this patient group.
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Affiliation(s)
- Maria L Cagigas
- Faculty of Medicine and Health, Charles Perkins Center, University of Sydney, Camperdown, Australia
| | - Giovanni Fiorito
- Clinical Bioinformatics Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- MRC-PHE Centre for Environment and Health, Imperial College London, London, UK
| | - Beatrice Bertozzi
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Andrius Masedunskas
- Faculty of Medicine and Health, Charles Perkins Center, University of Sydney, Camperdown, Australia
| | - Edda Cava
- Unit of Dietetic and Clinical Nutrition, Forlanini Hospital, San Camillo, Rome, Italy
| | - Francesco Spelta
- Geriatric Unit, Mater Salutis" Hospital, AULSS 9 ScaligeraLegnago, Verona, Italy
| | - Nicola Veronese
- Department of Internal Medicine and Geriatrics, Geriatric Unit, University of Palermo, Palermo, Italy
| | - Valeria Tosti
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Gayathiri Rajakumar
- Faculty of Medicine and Health, Charles Perkins Center, University of Sydney, Camperdown, Australia
| | - Tiana Pelaia
- Faculty of Medicine and Health, Charles Perkins Center, University of Sydney, Camperdown, Australia
| | - Arnold D Bullock
- Division of Urology, Washington University School of Medicine in St. Louis, St. Louis, MO, 63110, USA
| | - Robert S Figenshau
- Division of Urology, Washington University School of Medicine in St. Louis, St. Louis, MO, 63110, USA
| | - Gerald L Andriole
- Division of Urology, Washington University School of Medicine in St. Louis, St. Louis, MO, 63110, USA
| | - Luigi Fontana
- Faculty of Medicine and Health, Charles Perkins Center, University of Sydney, Camperdown, Australia.
- Department of Endocrinology, Royal Prince Alfred Hospital, Sydney, Australia.
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2
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Ito E, Sato Y, Kobayashi T, Soma T, Matsumoto T, Kimura A, Miyamoto K, Matsumoto H, Matsumoto M, Nakamura M, Sato K, Miyamoto T. Low energy availability reduces bone mass and gonadal function in male mice. J Bone Miner Metab 2023; 41:182-192. [PMID: 36914793 DOI: 10.1007/s00774-023-01413-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/17/2023] [Indexed: 03/16/2023]
Abstract
INTRODUCTION In women, the female athlete triad, marked by low energy availability, functional hypothalamic amenorrhea and osteoporosis, is a recognized risk for stress fractures. Stress injuries also occur in men, but by contrast risks and mechanisms underlying them are less characterized. MATERIALS AND METHODS 5 week-old wild-type male mice were fed ad libitum (ad) or subjected to 60% food restriction (FR) for five weeks. In both groups, some mice were allowed access to an exercise wheel in cages to allow voluntary wheel running (ex) and/or treated with active vitamin D analogues. Mice were sacrificed and analyzed at 10 weeks of age. RESULT Male FR mice exhibited significantly reduced testicle weight, serum testosterone levels and bone mass. Such bone losses in FR male mice were enhanced by exercise. Histological analysis revealed that both bone-resorbing and -forming activities were significantly reduced in FR or FR plus exercise (FR + ex) mice, mimicking a state of low bone turnover. Significantly reduced bone mass in FR or FR + ex male mice was significantly rescued by treatment with active vitamin D analogues, with significant restoration of osteoblastic activities. Serum levels of insulin-like growth factor I (IGF-I), which is critical for bone remodeling, were significantly lower in FR versus control male mice. CONCLUSIONS Low energy availability puts men at risk for stress injuries as well, and low energy availability is upstream of gonadal dysfunction and osteoporosis in males. Active vitamin D analogues could serve as therapeutic or preventive options for stress injuries in men.
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Affiliation(s)
- Eri Ito
- Institute for Integrated Sports Medicine, Keio University School of Medicine, 35 Shinano-Machi, Shinjuku-Ku, Tokyo, 160-8582, Japan
| | - Yuiko Sato
- Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Department of Advanced Therapy for Musculoskeletal Disorders II, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Department of Musculoskeletal Reconstruction and Regeneration Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Tami Kobayashi
- Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Department of Advanced Therapy for Musculoskeletal Disorders II, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Department of Musculoskeletal Reconstruction and Regeneration Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Tomoya Soma
- Division of Oral and Maxillofacial Surgery, Department of Dentistry and Oral Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Tatsuaki Matsumoto
- Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Atushi Kimura
- Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Kana Miyamoto
- Department of Orthopedic Surgery, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Hideo Matsumoto
- Institute for Integrated Sports Medicine, Keio University School of Medicine, 35 Shinano-Machi, Shinjuku-Ku, Tokyo, 160-8582, Japan
| | - Morio Matsumoto
- Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Masaya Nakamura
- Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Kazuki Sato
- Institute for Integrated Sports Medicine, Keio University School of Medicine, 35 Shinano-Machi, Shinjuku-Ku, Tokyo, 160-8582, Japan.
| | - Takeshi Miyamoto
- Department of Orthopedic Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan.
- Department of Advanced Therapy for Musculoskeletal Disorders II, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan.
- Department of Musculoskeletal Reconstruction and Regeneration Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan.
- Department of Orthopedic Surgery, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan.
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Shah UA, Iyengar NM. Plant-Based and Ketogenic Diets As Diverging Paths to Address Cancer: A Review. JAMA Oncol 2022; 8:1201-1208. [PMID: 35797039 PMCID: PMC10184023 DOI: 10.1001/jamaoncol.2022.1769] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Importance As the incidence of cancer and metabolic disorders, such as obesity, concurrently rise, there has been increasing awareness of the pervasive effect of nutrition. The whole foods plant-based diet (WFPBD) and ketogenic diet (KD) have gained popularity in oncology, and this topic is increasingly permeating clinical dialogue. Observations Dietary intake is associated with multiple pathways involved in carcinogenesis and tumor progression. Consumption of a plant-enriched diet is associated with reduced cancer incidence and is recommended by dietary guidelines for cancer prevention. Despite a starkly different nutrient composition, a WFPBD and KD can be associated with weight loss, decreased inflammation, and decreased insulin levels. In addition, a WFPBD is associated with increased fiber, phytochemicals, and butyrate levels and decreased insulin-like growth factor 1 levels, whereas a KD exerts potential anticancer effects by increasing β hydroxybutyrate levels. A KD may be of interest in select, less common settings, such as tumors treated with phosphatidylinositol 3-kinase inhibitors, which induce hyperinsulinemia and hyperglycemia. Completed interventional trials have focused on increasing fruit and vegetable intake or reducing fat intake but have not specifically tested WFPBD or KD for cancer prevention or treatment. Currently available data support plant-based diets as opposed to KD as part of a lifestyle associated with reduced cancer risk. In the postdiagnosis setting, there are currently no rigorously tested approaches that support the recommendation of any diet to treat cancer. Conclusions and Relevance The results of this review suggest that the collective evidence supports plant-enriched diets vs KD for the reduction of cancer risk and the improvement of metabolic disorders in survivors. Additional prospective randomized clinical trials are needed to encourage use of dietary modification across the cancer continuum. Rigorous trial designs that adapt classical oncologic end points may identify populations that are likely to benefit from starkly contrasting diets. Current data support prioritization of plant-based diets, and future data could further personalize dietary recommendations in cancer populations.
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Affiliation(s)
- Urvi A Shah
- Myeloma Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.,Department of Medicine, Weill Cornell Medical College, New York, New York
| | - Neil M Iyengar
- Department of Medicine, Weill Cornell Medical College, New York, New York.,Breast Medicine Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
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4
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Elisia I, Yeung M, Wong J, Kowalski S, Larsen M, Shyp T, Sorensen PH, krystal G. A low carbohydrate diet containing soy protein and fish oil reduces breast but not prostate cancer in C3(1)/Tag mice. Carcinogenesis 2021; 43:115-125. [DOI: 10.1093/carcin/bgab106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 10/25/2021] [Accepted: 11/01/2021] [Indexed: 11/13/2022] Open
Abstract
Abstract
We recently showed that a low carbohydrate (CHO) diet containing soy protein and fish oil dramatically reduces lung nodules in a mouse model of lung cancer when compared to a Western diet. To explore the universality of this finding, we herein compared this low CHO diet to a Western diet on in preventing breast and prostate cancer using a mouse model that expresses the SV40 large T antigen specifically in breast epithelia in females and prostate epithelia in males. We found that breast cancer was significantly reduced with this low CHO diet and this correlated with a reduction in plasma levels of glucose, insulin, IL-6, TNFα and PGE2. This also corresponded with a reduction in the Ki67 proliferation index within breast tumors. On the other hand, this low CHO diet did not reduce the incidence of prostate cancer in the male mice. Although it reduced both blood glucose and insulin to the same extent as in the female mice, there was no reduction in plasma IL-6, TNFα or PGE2 levels, nor in the Ki67 proliferation index in prostate lesions. Based on immunohistochemistry studies with antibodies to PFKFB3, CPT1a and FAS, it is likely that this difference in response of the two cancer types to this low CHO diet reflects differences in the glucose dependence of breast and prostate cancer, with the former being highly dependent on glucose for energy and the latter being more dependent on fatty acids.
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Affiliation(s)
- Ingrid Elisia
- The Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, V5Z 1L3, Canada
| | - Michelle Yeung
- The Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, V5Z 1L3, Canada
| | - Jennifer Wong
- The Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, V5Z 1L3, Canada
| | - Sara Kowalski
- The Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, V5Z 1L3, Canada
| | | | - Taras Shyp
- Department of Molecular Oncology, BC Cancer, Vancouver, British Columbia, V5Z 1L3, Canada
| | - Poul H Sorensen
- Department of Molecular Oncology, BC Cancer, Vancouver, British Columbia, V5Z 1L3, Canada
| | - Gerald krystal
- The Terry Fox Laboratory, BC Cancer, Vancouver, British Columbia, V5Z 1L3, Canada
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5
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Proske A, Bossen J, von Frieling J, Roeder T. Low-protein diet applied as part of combination therapy or stand-alone normalizes lifespan and tumor proliferation in a model of intestinal cancer. Aging (Albany NY) 2021; 13:24017-24036. [PMID: 34766923 PMCID: PMC8610115 DOI: 10.18632/aging.203692] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/26/2021] [Indexed: 12/27/2022]
Abstract
Tumors of the intestinal tract are among the most common tumor diseases in humans, but, like many other tumor entities, show an unsatisfactory prognosis with a need for effective therapies. To test whether nutritional interventions and a combination with a targeted therapy can effectively cure these cancers, we used the fruit fly Drosophila as a model. In this system, we induced tumors by EGFR overexpression in intestinal stem cells. Limiting the amount of protein in the diet restored life span to that of control animals. In combination with a specific EGFR inhibitor, all major tumor-associated phenotypes could be rescued. This form of treatment was also successful in a real treatment scenario, which means when they started after the full tumor phenotype was expressed. In conclusion, reduced protein administration can be a very promising form of adjuvant cancer therapy.
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Affiliation(s)
- Alina Proske
- Department of Molecular Physiology, Zoological Institute, Kiel University, Kiel, Germany
| | - Judith Bossen
- Department of Molecular Physiology, Zoological Institute, Kiel University, Kiel, Germany.,Airway Research Center North (ARCN), German Center for Lung Research (DZL), Kiel, Germany
| | - Jakob von Frieling
- Department of Molecular Physiology, Zoological Institute, Kiel University, Kiel, Germany
| | - Thomas Roeder
- Department of Molecular Physiology, Zoological Institute, Kiel University, Kiel, Germany.,Airway Research Center North (ARCN), German Center for Lung Research (DZL), Kiel, Germany
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6
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Gajski G, Gerić M, Jakaša I, Peremin I, Domijan AM, Vučić Lovrenčić M, Kežić S, Bituh M, Moraes de Andrade V. Inflammatory, oxidative and DNA damage status in vegetarians: is the future of human diet green? Crit Rev Food Sci Nutr 2021:1-33. [PMID: 34634971 DOI: 10.1080/10408398.2021.1986464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The health benefit of a vegetarian diet is still under debate as it may result in a higher intake of some beneficial micronutrients, while others may be reduced, thus influencing various metabolic pathways and health-related biomarkers. This scoping review discusses inflammatory, oxidative and DNA damage status in vegetarians and vegans compared to omnivores. Most of the reviewed studies indicated favorable effects of a vegetarian diet on oxidative status compared to omnivores but did not clearly associate particular dietary habits to genome damage. The evidence on the effect of vegetarian diet on the inflammatory and immunological biomarkers is poor, which could at least partly be explained by methodological constraints such as small sample size, short duration of vegetarianism and inconsistent definitions of the omnivorous diet. The only inflammatory biomarker that seems to be associated with the vegetarian diet was inflammatory mediator C-reactive protein, which in several studies showed lower values in vegetarians as compared to omnivores. There were very few studies on immunological markers and the results on the difference between vegetarians and omnivores were inconclusive. Although several biomarkers involved in oxidative stress and inflammation showed a beneficial association with the vegetarian diet, further research in well-defined and sufficiently sized cohorts is needed to provide more evidence.
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Affiliation(s)
- Goran Gajski
- Mutagenesis Unit, Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Marko Gerić
- Mutagenesis Unit, Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Ivone Jakaša
- Faculty of Food Technology and Biotechnology, Department of Chemistry and Biochemistry, Laboratory for Analytical Chemistry, University of Zagreb, Zagreb, Croatia
| | - Ines Peremin
- Faculty of Food Technology and Biotechnology, Department of Chemistry and Biochemistry, Laboratory for Analytical Chemistry, University of Zagreb, Zagreb, Croatia
| | - Ana-Marija Domijan
- Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Botany, University of Zagreb, Zagreb, Croatia
| | | | - Sanja Kežić
- Coronel Institute of Occupational Health, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Martina Bituh
- Faculty of Food Technology and Biotechnology, Department of Food Quality Control, Laboratory for Food Chemistry and Biochemistry, University of Zagreb, Zagreb, Croatia
| | - Vanessa Moraes de Andrade
- Health Sciences Unit, Translational Biomedicine Laboratory, University of Southern Santa Catarina, Criciúma, Brazil
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7
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Wang CY, Song X. Semiparametric regression calibration for general hazard models in survival analysis with covariate measurement error; surprising performance under linear hazard. Biometrics 2021; 77:561-572. [PMID: 32557567 PMCID: PMC7746575 DOI: 10.1111/biom.13318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 05/18/2020] [Accepted: 06/01/2020] [Indexed: 11/26/2022]
Abstract
Observational epidemiological studies often confront the problem of estimating exposure-disease relationships when the exposure is not measured exactly. Regression calibration (RC) is a common approach to correct for bias in regression analysis with covariate measurement error. In survival analysis with covariate measurement error, it is well known that the RC estimator may be biased when the hazard is an exponential function of the covariates. In the paper, we investigate the RC estimator with general hazard functions, including exponential and linear functions of the covariates. When the hazard is a linear function of the covariates, we show that a risk set regression calibration (RRC) is consistent and robust to a working model for the calibration function. Under exponential hazard models, there is a trade-off between bias and efficiency when comparing RC and RRC. However, one surprising finding is that the trade-off between bias and efficiency in measurement error research is not seen under linear hazard when the unobserved covariate is from a uniform or normal distribution. Under this situation, the RRC estimator is in general slightly better than the RC estimator in terms of both bias and efficiency. The methods are applied to the Nutritional Biomarkers Study of the Women's Health Initiative.
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Affiliation(s)
- Ching-Yun Wang
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Xiao Song
- Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, Athens, Georgia
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8
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Booshehri LG, Dugan J. Impact of the supplemental nutritional assistance program on diet-related disease morbidity among older adults. Health Serv Res 2021; 56:854-863. [PMID: 33491211 PMCID: PMC8522576 DOI: 10.1111/1475-6773.13609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Objectives To examine the health effects of the Supplemental Nutritional Assistance Program (SNAP) and the differential impact of SNAP across race/ethnicity among older adults. Data Source/Study Setting 2008‐2013 Medical Expenditure Panel Survey, a nationally representative population‐based complex sample survey. Study Design A difference‐in‐regression‐discontinuity (DRD) design is used to assess the impacts of SNAP on diet‐related disease morbidity. The primary outcomes were the prevalence rate of hypertension, coronary heart disease, stroke, diabetes, and cancer. We also conducted supplemental analysis to examine potential co‐occurring trends in medical utilization. Data Collection/Extraction Methods Data are publicly available. Principal Findings In the full sample, SNAP eligibility was associated with a significant decline in diabetes (−3.71 percentage points [pp]; P < .05). Non‐Hispanic (NH) White respondents reported trends similar to the full sample; however, NH Black respondents reported large declines in hypertension (−13.95 pp; P < .01) and Hispanic respondents reported declines in the prevalence of angina (−6.94 pp; P < .05) and stroke (−4.48 pp; P < .05). Conclusions Supplemental Nutritional Assistance Program eligibility was associated with the reduced prevalence of diet‐related disease among older adults. These observed declines in the prevalence of diet‐related disease do not appear to be attributable to increased medical visits or spending on medical services and prescriptions.
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Affiliation(s)
- Layla G Booshehri
- Department of Health Services, School of Public Health, Hans Rosling Center for Population Health, University of Washington, Seattle, Washington, USA
| | - Jerome Dugan
- Department of Health Services, School of Public Health, Hans Rosling Center for Population Health, University of Washington, Seattle, Washington, USA
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9
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Peroxisome Proliferator-Activated Receptors and Caloric Restriction-Common Pathways Affecting Metabolism, Health, and Longevity. Cells 2020; 9:cells9071708. [PMID: 32708786 PMCID: PMC7407644 DOI: 10.3390/cells9071708] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/14/2020] [Accepted: 07/14/2020] [Indexed: 02/06/2023] Open
Abstract
Caloric restriction (CR) is a traditional but scientifically verified approach to promoting health and increasing lifespan. CR exerts its effects through multiple molecular pathways that trigger major metabolic adaptations. It influences key nutrient and energy-sensing pathways including mammalian target of rapamycin, Sirtuin 1, AMP-activated protein kinase, and insulin signaling, ultimately resulting in reductions in basic metabolic rate, inflammation, and oxidative stress, as well as increased autophagy and mitochondrial efficiency. CR shares multiple overlapping pathways with peroxisome proliferator-activated receptors (PPARs), particularly in energy metabolism and inflammation. Consequently, several lines of evidence suggest that PPARs might be indispensable for beneficial outcomes related to CR. In this review, we present the available evidence for the interconnection between CR and PPARs, highlighting their shared pathways and analyzing their interaction. We also discuss the possible contributions of PPARs to the effects of CR on whole organism outcomes.
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10
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Kazemi A, Speakman JR, Soltani S, Djafarian K. Effect of calorie restriction or protein intake on circulating levels of insulin like growth factor I in humans: A systematic review and meta-analysis. Clin Nutr 2020; 39:1705-1716. [DOI: 10.1016/j.clnu.2019.07.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 07/21/2019] [Accepted: 07/22/2019] [Indexed: 12/22/2022]
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11
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Damiani G, Bragazzi NL, McCormick TS, Pigatto PDM, Leone S, Pacifico A, Tiodorovic D, Di Franco S, Alfieri A, Fiore M. Gut microbiota and nutrient interactions with skin in psoriasis: A comprehensive review of animal and human studies. World J Clin Cases 2020; 8:1002-1012. [PMID: 32258071 PMCID: PMC7103976 DOI: 10.12998/wjcc.v8.i6.1002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/25/2020] [Accepted: 03/09/2020] [Indexed: 02/06/2023] Open
Abstract
The intestinal tract (i.e., the gut), is where the body’s nutrients are absorbed, and is simultaneously inhabited by numerous microbes. An increasing body of literature suggests a crucial role for the gut microbiome in modulating systemic inflammatory disease. Psoriasis is a chronic systemic inflammatory disease and its pathogenesis is related to the interaction between genetic susceptibility, immune response and environmental triggers. The omics era has allowed physicians to assess different aspects of psoriasis pathogenesis such as the microbiome, infectome, and autoinfectome. Furthermore, diet appears to play an important role in modulating disease activity, perhaps by influencing gut microbes. Given these observations, we aimed to summarize the current knowledge regarding skin-microbiome-gut-nutrients and psoriasis.
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Affiliation(s)
- Giovanni Damiani
- Department of Dermatology, Case Western Reserve University, Cleveland, OH 44106, United States
- Clinical Dermatology, IRCCS Istituto Ortopedico Galeazzi, Milan 20122, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan 20122, Italy
| | - Nicola Luigi Bragazzi
- Postgraduate School of Public Health, Department of Health Sciences, University of Genoa, Genoa 16132, Italy
| | - Thomas S McCormick
- Department of Dermatology, Case Western Reserve University, Cleveland, OH 44106, United States
| | - Paolo Daniele Maria Pigatto
- Clinical Dermatology, IRCCS Istituto Ortopedico Galeazzi, Milan 20122, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan 20122, Italy
| | - Sebastiano Leone
- Department of Medicine, Division of Infectious diseases, “San Giuseppe Moscati” Hospital, Avellino 83100, Italy
| | - Alessia Pacifico
- San Gallicano Dermatological Institute, IRCCS, Rome 00144, Italy
| | - Danica Tiodorovic
- Dermatology Clinic, Medical Faculty, Nis University, Nis 18000, Serbia
| | - Sveva Di Franco
- Department of Women, Child and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Aniello Alfieri
- Department of Women, Child and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Marco Fiore
- Department of Women, Child and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
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12
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Santosa C, Rusyati LMM, Adiguna MS, Praharsini IGAA, Wiraguna AAGP, Wardhana M. Correlation of Plasma Level of Insulin-Like Growth Factor-1 (IGF-1) with Bacterial Index on Leprosy Patients in Bali. Ann Dermatol 2020; 32:370-374. [PMID: 33911770 PMCID: PMC7992574 DOI: 10.5021/ad.2020.32.5.370] [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: 11/04/2019] [Revised: 04/06/2020] [Accepted: 04/20/2020] [Indexed: 11/08/2022] Open
Abstract
Background Leprosy is an infection by Mycobacterium leprae, which influenced by cellular immunity. Leprosy tends to occur in low socio-economic and nutrition groups. Researchers try to prove the role of nutrition in the pathogenesis of leprosy. Insulin-like growth factor-1 (IGF-1) as a marker of nutritional status shown to play a role in cellular immunity. Objective To evaluate the correlation between IGF-1 with bacterial index (BI) on leprosy patients in Bali. Methods Cross-sectional study in Sanglah Public General Hospital, Denpasar of patients with paucibacillary (PB) and multibacillary (MB) leprosy were assessed for BI using slit-skin smear. All patients were tested for plasma IGF-1 using chemiluminescent immunometric assay Immulite. All data were analyzed using IBM SPSS ver. 24.0. The study has been approved by local Institutional Review Board with ethical clearance number 2017.02.1.0356. Results Our study involved 44 MB and 2 PB leprosy. The common age group affected was between 31~40 years old (23.9%), male (60.9%), and normal body mass index (BMI) (65.2%). Mean plasma IGF-1 level in PB leprosy was higher (91.07±0.74 ng/ml) than MB (82.74±6.44 ng/ml). The mean IGF-1 level decreases as BI increases in both groups (CI 95%=81.16~85.04; p<0.001). Pearson correlation test shows strong negative correlation (Pearson r=−0.976; p<0.001) with determinant coefficient (R2) showing 95.2% (p<0.001). Conclusion In Balinese leprosy patients, severity of disease status measured by BI were found to be strongly correlated with the plasma IGF-1 level which may help preventing transmission in household contacts by improving nutritional status.
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Affiliation(s)
- Calvin Santosa
- Department of Dermatovenereology, Sanglah General Public Hospital, Udayana University, Bali, Indonesia
| | - Luh Made Mas Rusyati
- Department of Dermatovenereology, Sanglah General Public Hospital, Udayana University, Bali, Indonesia
| | - Made Swastika Adiguna
- Department of Dermatovenereology, Sanglah General Public Hospital, Udayana University, Bali, Indonesia
| | - IGAA Praharsini
- Department of Dermatovenereology, Sanglah General Public Hospital, Udayana University, Bali, Indonesia
| | - AAGP Wiraguna
- Department of Dermatovenereology, Sanglah General Public Hospital, Udayana University, Bali, Indonesia
| | - Made Wardhana
- Department of Dermatovenereology, Sanglah General Public Hospital, Udayana University, Bali, Indonesia
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Ekmekcioglu C. Nutrition and longevity – From mechanisms to uncertainties. Crit Rev Food Sci Nutr 2019; 60:3063-3082. [DOI: 10.1080/10408398.2019.1676698] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Cem Ekmekcioglu
- Department of Environmental Health, Center for Public Health, Medical University of Vienna, Vienna, Austria
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14
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Hagberg JM, Coyle EF, Baldwin KM, Cartee GD, Fontana L, Joyner MJ, Kirwan JP, Seals DR, Weiss EP. The historical context and scientific legacy of John O. Holloszy. J Appl Physiol (1985) 2019; 127:277-305. [PMID: 30730811 PMCID: PMC6732442 DOI: 10.1152/japplphysiol.00669.2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
John O. Holloszy, as perhaps the world's preeminent exercise biochemist/physiologist, published >400 papers over his 50+ year career, and they have been cited >41,000 times. In 1965 Holloszy showed for the first time that exercise training in rodents resulted in a doubling of skeletal muscle mitochondria, ushering in a very active era of skeletal muscle plasticity research. He subsequently went on to describe the consequences of and the mechanisms underlying these adaptations. Holloszy was first to show that muscle contractions increase muscle glucose transport independent of insulin, and he studied the mechanisms underlying this response throughout his career. He published important papers assessing the impact of training on glucose and insulin metabolism in healthy and diseased humans. Holloszy was at the forefront of rodent studies of caloric restriction and longevity in the 1980s, following these studies with important cross-sectional and longitudinal caloric restriction studies in humans. Holloszy was influential in the discipline of cardiovascular physiology, showing that older healthy and diseased populations could still elicit beneficial cardiovascular adaptations with exercise training. Holloszy and his group made important contributions to exercise physiology on the effects of training on numerous metabolic, hormonal, and cardiovascular adaptations. Holloszy's outstanding productivity was made possible by his mentoring of ~100 postdoctoral fellows and substantial NIH grant funding over his entire career. Many of these fellows have also played critical roles in the exercise physiology/biochemistry discipline. Thus it is clear that exercise biochemistry and physiology will be influenced by John Holloszy for numerous years to come.
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Affiliation(s)
- James M Hagberg
- Department of Kinesiology, University of Maryland School of Public Health, College Park, Maryland
| | - Edward F Coyle
- Department of Kinesiology and Health Education, University of Texas, Austin, Texas
| | - Kenneth M Baldwin
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, California
| | - Gregory D Cartee
- Muscle Biology Laboratory, School of Kinesiology; Department of Molecular and Integrative Physiology; and Institute of Gerontology, University of Michigan, Ann Arbor, Michigan
| | - Luigi Fontana
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri; Department of Clinical and Experimental Sciences, Brescia University Medical School, Brescia, Italy; and School of Medicine and Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia
| | - Michael J Joyner
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota
| | - John P Kirwan
- Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, Louisiana
| | - Douglas R Seals
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, Colorado
| | - Edward P Weiss
- Department of Nutrition and Dietetics, Doisy College of Health Science, St. Louis University, St. Louis, Missouri
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Justice JN, Ferrucci L, Newman AB, Aroda VR, Bahnson JL, Divers J, Espeland MA, Marcovina S, Pollak MN, Kritchevsky SB, Barzilai N, Kuchel GA. A framework for selection of blood-based biomarkers for geroscience-guided clinical trials: report from the TAME Biomarkers Workgroup. GeroScience 2018; 40:419-436. [PMID: 30151729 PMCID: PMC6294728 DOI: 10.1007/s11357-018-0042-y] [Citation(s) in RCA: 198] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 08/15/2018] [Indexed: 12/25/2022] Open
Abstract
Recent advances indicate that biological aging is a potentially modifiable driver of late-life function and chronic disease and have led to the development of geroscience-guided therapeutic trials such as TAME (Targeting Aging with MEtformin). TAME is a proposed randomized clinical trial using metformin to affect molecular aging pathways to slow the incidence of age-related multi-morbidity and functional decline. In trials focusing on clinical end-points (e.g., disease diagnosis or death), biomarkers help show that the intervention is affecting the underlying aging biology before sufficient clinical events have accumulated to test the study hypothesis. Since there is no standard set of biomarkers of aging for clinical trials, an expert panel was convened and comprehensive literature reviews conducted to identify 258 initial candidate biomarkers of aging and age-related disease. Next selection criteria were derived and applied to refine this set emphasizing: (1) measurement reliability and feasibility; (2) relevance to aging; (3) robust and consistent ability to predict all-cause mortality, clinical and functional outcomes; and (4) responsiveness to intervention. Application of these selection criteria to the current literature resulted in a short list of blood-based biomarkers proposed for TAME: IL-6, TNFα-receptor I or II, CRP, GDF15, insulin, IGF1, cystatin C, NT-proBNP, and hemoglobin A1c. The present report provides a conceptual framework for the selection of blood-based biomarkers for use in geroscience-guided clinical trials. This work also revealed the scarcity of well-vetted biomarkers for human studies that reflect underlying biologic aging hallmarks, and the need to leverage proposed trials for future biomarker discovery and validation.
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Affiliation(s)
- Jamie N Justice
- Internal Medicine Section on Gerontology and Geriatrics, and the Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, 1 Medical Center Blvd, Winston-Salem, NC, 27157, USA.
| | - Luigi Ferrucci
- National Institute on Aging, National Institutes of Health, Baltimore, MD, 21224, USA
| | - Anne B Newman
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Vanita R Aroda
- Department of Medicine, Division of Diabetes, Endocrinology, and Hypertension Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Judy L Bahnson
- Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
| | - Jasmin Divers
- Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
| | - Mark A Espeland
- Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
| | - Santica Marcovina
- Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, 98109, USA
| | - Michael N Pollak
- Department of Oncology, Jewish General Hospital, McGill University, Montreal, Quebec, H3T1E2, Canada
| | - Stephen B Kritchevsky
- Internal Medicine Section on Gerontology and Geriatrics, and the Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, 1 Medical Center Blvd, Winston-Salem, NC, 27157, USA
| | - Nir Barzilai
- Department of Medicine, Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - George A Kuchel
- UConn Center on Aging, University of Connecticut School of Medicine, Farmington, CT, 06030, USA
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A Dietary Intervention to Lower Serum Levels of IGF-I in BRCA Mutation Carriers. Cancers (Basel) 2018; 10:cancers10090309. [PMID: 30181513 PMCID: PMC6162406 DOI: 10.3390/cancers10090309] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 08/31/2018] [Accepted: 09/02/2018] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Insulin-like growth factor I (IGF-I) and other markers of insulin resistance (IRm) might influence the penetrance of BRCA gene mutation. In a demonstration project on BRCA mutation carriers we tested the effect of the 'Mediterranean diet', with moderate protein restriction, on serum levels of IGF-I and IRm. METHODS BRCA mutation carriers, with or without breast cancer, aged 18⁻70 years and without metastases were eligible. After the baseline examinations, women were randomized to an active dietary intervention or to a control group. The intervention group attended six full days of life-style intervention activities (cookery classes followed by lunch, sessions of walking for 45 min and nutritional conferences) over the next six months. RESULTS 213 BRCA mutation carriers completed the six-month study. Women in the intervention group (110) showed major changes in all the parameters under study. They significantly lost weight (p < 0.001), fat mass (p = 0.002), with reduced hip circumference (p = 0.01), triglycerides (p = 0.02) and IGF-I (p = 0.02) compared with controls. They also had a significantly higher levels of insulin-like growth factor-binding protein 3 (IGFI-BP3) (p = 0.03) and a lower IGF-I/IGFI-BP3 ratio (p = 0.04). The reduction of serum levels of IGF-I was significantly associated with the reduction in the consumption of animal products (p = 0.04). CONCLUSIONS Women in the intervention group showed significant improvements in IGF-I and in other IRm that might influence the penetrance of BRCA mutations.
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The rationale for a role for diet and nutrition in the prevention and treatment of cancer. Eur J Cancer Prev 2018; 27:406-410. [DOI: 10.1097/cej.0000000000000427] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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18
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Lewicki S, Leśniak M, Bertrandt J, Kalicki B, Kubiak JZ, Lewicka A. The long-term effect of a protein-deficient-diet enriched with vitamin B6 on the blood parameters in unexercised and exercised rats. FOOD AGR IMMUNOL 2018. [DOI: 10.1080/09540105.2018.1439900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Sławomir Lewicki
- Department of Regenerative Medicine and Cell Biology, Military Institute of Hygiene and Epidemiology, Warsaw, Poland
| | - Monika Leśniak
- Department of Regenerative Medicine and Cell Biology, Military Institute of Hygiene and Epidemiology, Warsaw, Poland
| | - Jerzy Bertrandt
- Department of Hygiene and Physiology, Military Institute of Hygiene and Epidemiology, Warsaw, Poland
| | - Bolesław Kalicki
- Paediatric, Nephrology and Allergology Clinic, Military Institute of Medicine, Warsaw, Poland
| | - Jacek Z. Kubiak
- Department of Regenerative Medicine and Cell Biology, Military Institute of Hygiene and Epidemiology, Warsaw, Poland
- Faculté de Medecine, CNRS UMR 6290, IGDR, Université Rennes, Rennes, France
| | - Aneta Lewicka
- Laboratory of Epidemiology, Military Institute of Hygiene and Epidemiology, Warsaw, Poland
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Yin J, Ren W, Huang X, Li T, Yin Y. Protein restriction and cancer. Biochim Biophys Acta Rev Cancer 2018; 1869:256-262. [PMID: 29596961 DOI: 10.1016/j.bbcan.2018.03.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 03/02/2018] [Accepted: 03/23/2018] [Indexed: 02/07/2023]
Abstract
Protein restriction without malnutrition is currently an effective nutritional intervention known to prevent diseases and promote health span from yeast to human. Recently, low protein diets are reported to be associated with lowered cancer incidence and mortality risk of cancers in human. In murine models, protein restriction inhibits tumor growth via mTOR signaling pathway. IGF-1, amino acid metabolic programing, FGF21, and autophagy may also serve as potential mechanisms of protein restriction mediated cancer prevention. Together, dietary intervention aimed at reducing protein intake can be beneficial and has the potential to be widely adopted and effective in preventing and treating cancers.
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Affiliation(s)
- Jie Yin
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences; Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture; Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, PR China; University of Chinese Academy of Sciences, Beijing, PR China
| | - Wenkai Ren
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, Institute of Subtropical Animal Nutrition and Feed, College of Animal Science, South China Agricultural University, Guangzhou, PR China; Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Veterinary Medicine, Yangzhou University, Yangzhou, PR China
| | - Xingguo Huang
- Department of Animal science, Hunan Agriculture University, Changsha, PR China; Hunan Co-Innovation Center of Animal Production Safety, Changsha, PR China
| | - Tiejun Li
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences; Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture; Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, PR China; Hunan Co-Innovation Center of Animal Production Safety, Changsha, PR China.
| | - Yulong Yin
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences; Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture; Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, PR China; Guangdong Provincial Key Laboratory of Animal Nutrition Control, Institute of Subtropical Animal Nutrition and Feed, College of Animal Science, South China Agricultural University, Guangzhou, PR China.
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20
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Villarini A, Pasanisi P, Traina A, Mano MP, Bonanni B, Panico S, Scipioni C, Galasso R, Paduos A, Simeoni M, Bellotti E, Barbero M, Macellari G, Venturelli E, Raimondi M, Bruno E, Gargano G, Fornaciari G, Morelli D, Seregni E, Krogh V, Berrino F. Lifestyle and Breast Cancer Recurrences: The DIANA-5 Trial. TUMORI JOURNAL 2018; 98:1-18. [DOI: 10.1177/030089161209800101] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Aims and Background The DIANA (Diet and Androgens)-5 study is a multi-institutional randomized controlled trial of the effectiveness of a diet based on Mediterranean and macrobiotic recipes and principles, associated with moderate physical activity, in reducing additional breast cancer events in women with early stage invasive breast cancer at high risk of recurrence because of metabolic or endocrine milieu. The intervention is expected to reduce serum insulin and sex hormones, which were associated with breast prognosis in previous studies. Methods Between 2008 and 2010, the study randomly assigned 1208 patients to an intensive diet and exercise intervention or to a comparison group, to be followed-up through 2015. General lifestyle recommendations for the prevention of cancer are given to both groups, and the intervention group is being offered a comprehensive lifestyle intervention, including cooking classes, conferences, common meals and exercise sessions. Adherence assessments occurred at baseline and at 12 months and are planned at 36 and 60 months. They include food frequency diaries, anthropometric measures, body fat distribution assessed with impedance scale, one week registration of physical activity with a multisensor arm-band monitor, metabolic and endocrine blood parameters. Outcome breast cancer events are assessed through self report at semi annual meetings or telephone interview and are validated through medical record verification. Results The randomized groups were comparable for age (51.8 years), proportion of ER-negative tumors (22%), axillary node metastasis (42%), reproductive variables, tobacco smoking, blood pressure, anthropometric measurements and hormonal and metabolic parameters. Conclusions DIANA-5 has the potential to establish whether a Mediterranean-macrobiotic lifestyle may reduce breast cancer recurrences. We will assess evidence of effectiveness, first by comparing the incidence of additional breast cancer events (local or distant recurrence, second ipsilateral or contralateral cancer) in the intervention and in the control group, by an intention-to-treat analysis, and second by analyzing the incidence of breast cancer events in the total study population by compliance assessment score.
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Affiliation(s)
- Anna Villarini
- Department of Predictive and Preventive Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan
| | - Patrizia Pasanisi
- Department of Predictive and Preventive Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan
| | - Adele Traina
- Department of Oncology ARNAS Ospedali Civico e Benfratelli G. Di Cristina e M. Ascoli, Palermo
| | - Maria Piera Mano
- Centro di Riferimento per l'Epidemiologia e la Prevenzione Oncologica in Piemonte (CPO), Turin
| | | | - Salvatore Panico
- Department of Clinical and Experimental Medicine, Università Federico II, Naples
| | - Corrado Scipioni
- Centro di Prevenzione, Diagnosi e Terapia del Tumore alla Mammella “Giunone”, Avezzano, L'Aquila
| | - Rocco Galasso
- Department of Oncology, Centro di Riferimento Oncologico, Rionero in Vulture (Potenza)
| | | | | | - Elena Bellotti
- Unit of Radiology, Azienda Ospedaliera di Busto Arsizio (Varese)
| | | | | | - Elisabetta Venturelli
- Department of Predictive and Preventive Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan
| | - Milena Raimondi
- Department of Predictive and Preventive Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan
| | - Eleonora Bruno
- Department of Predictive and Preventive Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan
| | - Giuliana Gargano
- Department of Predictive and Preventive Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan
| | - Giuseppe Fornaciari
- Department of Predictive and Preventive Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan
| | - Daniele Morelli
- Department of Pathology and Laboratory Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Ettore Seregni
- Department of Diagnostic Imaging and Radiotherapy, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Vittorio Krogh
- Department of Predictive and Preventive Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan
| | - Franco Berrino
- Department of Predictive and Preventive Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan
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Abstract
The ageing trajectory is plastic and can be slowed down by lifestyle factors, including good nutrition, adequate physical activity and avoidance of smoking. In humans, plant-based diets such as the Mediterranean dietary pattern are associated with healthier ageing and lower risk of age-related disease, whereas obesity accelerates ageing and increases the likelihood of most common complex diseases including CVD, T2D, dementia, musculoskeletal diseases and several cancers. As yet, there is only weak evidence in humans about the molecular mechanisms through which dietary factors modulate ageing but evidence from cell systems and animal models suggest that it is probable that better dietary choices influence all 9 hallmarks of ageing. It seems likely that better eating patterns retard ageing in at least two ways including (i) by reducing pervasive damaging processes such as inflammation, oxidative stress/redox changes and metabolic stress and (ii) by enhancing cellular capacities for damage management and repair. From a societal perspective, there is an urgent imperative to discover, and to implement, cost-effective lifestyle (especially dietary) interventions which enable each of us to age well, i.e. to remain physically and socially active and independent and to minimise the period towards the end of life when individuals suffer from frailty and multi-morbidity.
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Affiliation(s)
- Fiona C Malcomson
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - John C Mathers
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.
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Lettieri-Barbato D, Giovannetti E, Aquilano K. Effects of dietary restriction on adipose mass and biomarkers of healthy aging in human. Aging (Albany NY) 2017; 8:3341-3355. [PMID: 27899768 PMCID: PMC5270672 DOI: 10.18632/aging.101122] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 11/16/2016] [Indexed: 12/22/2022]
Abstract
In developing countries the rise of obesity and obesity-related metabolic disorders, such as cardiovascular diseases and type 2 diabetes, reflects the changes in lifestyle habits and wrong dietary choices. Dietary restriction (DR) regimens have been shown to extend health span and lifespan in many animal models including primates. Identifying biomarkers predictive of clinical benefits of treatment is one of the primary goals of precision medicine. To monitor the clinical outcomes of DR interventions in humans, several biomarkers are commonly adopted. However, a validated link between the behaviors of such biomarkers and DR effects is lacking at present time. Through a systematic analysis of human intervention studies, we evaluated the effect size of DR (i.e. calorie restriction, very low calorie diet, intermittent fasting, alternate day fasting) on health-related biomarkers. We found that DR is effective in reducing total and visceral adipose mass and improving inflammatory cytokines profile and adiponectin/leptin ratio. By analysing the levels of canonical biomarkers of healthy aging, we also validated the changes of insulin, IGF-1 and IGFBP-1,2 to monitor DR effects. Collectively, we developed a useful platform to evaluate the human responses to dietary regimens low in calories.
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Affiliation(s)
| | | | - Katia Aquilano
- Department of Biology, University of Rome Tor Vergata, Rome, Italy.,IRCCS San Raffaele La Pisana, Rome, Italy
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Askari B, Bijeh N, Rashid Lamir A. Effects of 8 Weeks of Resistance Training and IGF-1 Injection on Biochemical Markers of Cancer and Colorectal Structures in Rats. MEDICAL LABORATORY JOURNAL 2017. [DOI: 10.29252/mlj.11.6.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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Wang CY, Song X. Robust best linear estimator for Cox regression with instrumental variables in whole cohort and surrogates with additive measurement error in calibration sample. Biom J 2016; 58:1465-1484. [PMID: 27546625 DOI: 10.1002/bimj.201500238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 04/13/2016] [Accepted: 06/02/2016] [Indexed: 11/05/2022]
Abstract
Biomedical researchers are often interested in estimating the effect of an environmental exposure in relation to a chronic disease endpoint. However, the exposure variable of interest may be measured with errors. In a subset of the whole cohort, a surrogate variable is available for the true unobserved exposure variable. The surrogate variable satisfies an additive measurement error model, but it may not have repeated measurements. The subset in which the surrogate variables are available is called a calibration sample. In addition to the surrogate variables that are available among the subjects in the calibration sample, we consider the situation when there is an instrumental variable available for all study subjects. An instrumental variable is correlated with the unobserved true exposure variable, and hence can be useful in the estimation of the regression coefficients. In this paper, we propose a nonparametric method for Cox regression using the observed data from the whole cohort. The nonparametric estimator is the best linear combination of a nonparametric correction estimator from the calibration sample and the difference of the naive estimators from the calibration sample and the whole cohort. The asymptotic distribution is derived, and the finite sample performance of the proposed estimator is examined via intensive simulation studies. The methods are applied to the Nutritional Biomarkers Study of the Women's Health Initiative.
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Affiliation(s)
- Ching-Yun Wang
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, P.O. Box 19024, Seattle, WA, 98109-1024, USA.
| | - Xiao Song
- Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, Athens, GA, 30602, USA
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Tajaddini A, Pourzand A, Sanaat Z, Pirouzpanah S. Dietary resistant starch contained foods and breast cancer risk: a case-control study in northwest of Iran. Asian Pac J Cancer Prev 2016; 16:4185-92. [PMID: 26028070 DOI: 10.7314/apjcp.2015.16.10.4185] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND A protective effect of resistant starch (RS) containing foods on carcinogenesis has been shown from several lines of experimental evidence for gastrointestinal cancers. Therefore, we aimed to investigate the association between RS contained foods and breast cancer (BC) risk in a hospital-based, age- and origin- matched, case-control study. MATERIALS AND METHODS A validated, semi-quantitative, food frequency questionnaire (FFQ) was completed by 306 women newly diagnosed with BC aged 25 to 65 years, and 309 healthy women as matched controls. Odds ratios (ORs) and 95% confidence intervals (95%CI) were estimated using conditional logistic regression models. RESULTS Reduced BC risk was associated with the highest tertile of whole-wheat bread and boiled potato consumption with adjusted ORs at 0.34 (95%CI: 0.19-0.59) and 0.61 (95%CI: 0.37- 0.99), respectively. Among consumers of whole-wheat bread consumers were considered, the protective role of cereals remained relatively apparent at higher intakes level of fiber rich breads at adjusted models (OR=0.53, 95%CI: 0.28-1.01). Moreover, high intake of legumes was found out to be a significant protective dietary factor against risk of BC development with an OR of 0.01 (95%CI: 0.03-0.13). However, consumption of white bread and biscuits was positively related to BC risk. CONCLUSIONS Our results show that certain RS containing foods, in particular whole wheat bread, legumes and boiled potato may reduce BC risk, whereas higher intake of white bread and biscuits may be related to increased BC risk.
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Affiliation(s)
- Aynaz Tajaddini
- Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran E-mail : ,
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Huang TH, Su IH, Lewis JL, Chang MS, Hsu AT, Perrone CE, Ables GP. Effects of methionine restriction and endurance exercise on bones of ovariectomized rats: a study of histomorphometry, densitometry, and biomechanical properties. J Appl Physiol (1985) 2015; 119:517-26. [DOI: 10.1152/japplphysiol.00395.2015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 07/07/2015] [Indexed: 12/31/2022] Open
Abstract
To investigate the effects of dietary methionine restriction (MetR) and endurance exercise on bone quality under a condition of estrogen deficiency, female Sprague-Dawley rats (36-wk-old) were assigned to a sham surgery group or one of five ovariectomized groups subjected to interventions of no treatment (Ovx), endurance exercise (Exe), methionine restriction (MetR), methionine restriction plus endurance exercise (MetR + Exe), and estrogen treatment (Est). Rats in the exercise groups were subjected to a treadmill running regimen. MetR and control diets contained 0.172 and 0.86% methionine, respectively. After the 12-wk intervention, all animals were killed, and serum and bone tissues were collected for analyses. Compared with estrogen treatment, MetR diet and endurance exercise showed better or equivalent efficiency in reducing body weight gain caused by ovariectomy ( P < 0.05). Whereas only the Est group showed evidence for reduced bone turnover compared with the Ovx group, MetR diet and/or endurance exercise demonstrated efficiencies in downregulating serum insulin, leptin, triglyceride, and thiobarbituric acid reactive substances ( P < 0.05). Both the Exe and MetR groups showed higher femoral cortical and total volumetric bone mineral density (vBMD), but only the Exe and Est groups preserved cancellous bone volume and/or vBMD of distal femora ( P < 0.05) compared with the Ovx group. After being normalized to body mass, femora of the MetR and MetR + Exe groups had relatively higher bending strength and dimension values followed by the Sham, Exe, and Est groups ( P < 0.05). In conclusion, both MetR diet and endurance exercise improved cortical bone properties, but only endurance exercise preserved cancellous bone under estrogen deficiency.
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Affiliation(s)
- Tsang-Hai Huang
- Institute of Physical Education, Health and Leisure Studies, National Cheng Kung University, Tainan, Taiwan
| | - I-Hsiu Su
- Institute of Physical Education, Health and Leisure Studies, National Cheng Kung University, Tainan, Taiwan
| | - Jack L. Lewis
- Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, Minnesota
| | - Ming-Shi Chang
- Department of Biochemistry and Molecular Biology, National Cheng Kung University, Tainan, Taiwan
| | - Ar-Tyan Hsu
- Department of Physical Therapy, National Cheng Kung University, Tainan, Taiwan; and
| | - Carmen E. Perrone
- Orentreich Foundation for the Advancement of Science, Cold Spring-on-Hudson, New York
| | - Gene P. Ables
- Orentreich Foundation for the Advancement of Science, Cold Spring-on-Hudson, New York
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Realdon S, Antonello A, Arcidiacono D, Dassie E, Cavallin F, Fassan M, Nardi MT, Alberti A, Rugge M, Battaglia G. Adherence to WCRF/AICR lifestyle recommendations for cancer prevention and the risk of Barrett's esophagus onset and evolution to esophageal adenocarcinoma: results from a pilot study in a high-risk population. Eur J Nutr 2015; 55:1563-71. [PMID: 26155779 DOI: 10.1007/s00394-015-0975-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 06/29/2015] [Indexed: 02/07/2023]
Abstract
PURPOSE While adherence to the World Cancer Research Fund (WCRF) guidelines on lifestyle and cancer was recently proven to be associated with an increased risk of esophageal cancer, no investigation has yet been carried out on its role on Barrett's esophagus (BE) development and its progression to esophageal adenocarcinoma (EAC). The primary aim of this study was to evaluate the role of adherence to WCRF lifestyle recommendations in BE onset and progression. The secondary aim was to investigate the association between disease progression and specific aspects of diet and lifestyle. METHODS Established risk factors for BE and EAC development and adherence to WCRF guidelines were assessed in 107 consecutive patients undergoing an upper gastrointestinal endoscopy for symptoms suggesting gastroesophageal reflux (GERD) and a suspected diagnosis of BE/dysplasia on BE. Patients were divided according to histology: those with GERD without metaplasia, with non-dysplastic BE, with low-grade dysplasia, with high-grade dysplasia or with early EAC. The four groups were expressed as an ordered categorical variable of disease progression. An ordered logit model was estimated to identify the independent predictors of disease progression. RESULTS Adherence to WCRF guidelines was identified as independent protective factor (OR 0.51, 95 % CI 0.37-0.67) of disease progression. Disease progression was associated with reduced adherence to guidelines on physical activity (from 48.2 to 5.3 %, p = 0.001), sedentary habits (from 33.3 to 0 %, p = 0.03), fruit consumption (from 37.0 to 5.6 %, p = 0.02) and processed meat consumption (from 51.9 to 10.5 %, p = 0.002). CONCLUSION Adherence to WCRF guidelines has a protective factor in BE onset and its evolution to EAC.
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Affiliation(s)
- Stefano Realdon
- Digestive Endoscopy Unit, Veneto Institute of Oncology IOV - I.R.C.S.S., Via Gattamelata 64, 35128, Padua, Italy.
| | - Alessandro Antonello
- Digestive Endoscopy Unit, Veneto Institute of Oncology IOV - I.R.C.S.S., Via Gattamelata 64, 35128, Padua, Italy
| | - Diletta Arcidiacono
- Venetian Institute for Molecular Medicine, Via Orus 2, 35128, Padua, Italy.,Department of Surgery, Oncology and Gastroenterology, University of Padua, Via Giustiniani 2, 35128, Padua, Italy
| | - Elisa Dassie
- Venetian Institute for Molecular Medicine, Via Orus 2, 35128, Padua, Italy
| | - Francesco Cavallin
- Oncological Surgery Unit, Veneto Institute of Oncology IOV - I.R.C.S.S., Via Gattamelata 64, 35128, Padua, Italy
| | - Matteo Fassan
- Department of Medicine, Surgical Pathology and Cytopathology, University of Padua, Via Giustiniani 2, 35128, Padua, Italy
| | - Maria Teresa Nardi
- Clinical Nutrition Unit, Veneto Institute of Oncology IOV - I.R.C.S.S., Via Gattamelata 64, 35128, Padua, Italy
| | - Alfredo Alberti
- Venetian Institute for Molecular Medicine, Via Orus 2, 35128, Padua, Italy.,Department of Molecular Medicine, University of Padua, Via Giustiniani 2, 35128, Padua, Italy
| | - Massimo Rugge
- Department of Medicine, Surgical Pathology and Cytopathology, University of Padua, Via Giustiniani 2, 35128, Padua, Italy
| | - Giorgio Battaglia
- Digestive Endoscopy Unit, Veneto Institute of Oncology IOV - I.R.C.S.S., Via Gattamelata 64, 35128, Padua, Italy
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Abstract
This article covers some important concepts and controversies in modern nutritional science. It describes a diet style designed to maximize health, longevity, and disease reversal—foundationally structured on the quality and comprehensive adequacy of nutrients rather than the balance of macronutrients, as is more popular today. I call such a diet, which attempts to optimize micronutrients, a nutritarian diet. I will review a small case series demonstrating typical results in diabetics and some of my clinical observations over the last 25 years treating people with a nutritarian diet, which could be either vegan or flexitarian. I will also discuss health concerns observed from an unsupplemented vegan diet, specifically the risk of depression and later life dementia in individuals with enhanced need for long-chain omega-3 fatty acids.
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Affiliation(s)
- Joel Fuhrman
- Nutritional Research Foundation, Flemington, New Jersey (JF)
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29
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NADPH Oxidase Activity in Cerebral Arterioles Is a Key Mediator of Cerebral Small Vessel Disease-Implications for Prevention. Healthcare (Basel) 2015; 3:233-51. [PMID: 27417759 PMCID: PMC4939544 DOI: 10.3390/healthcare3020233] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 03/21/2015] [Accepted: 04/08/2015] [Indexed: 02/05/2023] Open
Abstract
Cerebral small vessel disease (SVD), a common feature of brain aging, is characterized by lacunar infarcts, microbleeds, leukoaraiosis, and a leaky blood-brain barrier. Functionally, it is associated with cognitive decline, dementia, depression, gait abnormalities, and increased risk for stroke. Cerebral arterioles in this syndrome tend to hypertrophy and lose their capacity for adaptive vasodilation. Rodent studies strongly suggest that activation of Nox2-dependent NADPH oxidase activity is a crucial driver of these structural and functional derangements of cerebral arterioles, in part owing to impairment of endothelial nitric oxide synthase (eNOS) activity. This oxidative stress may also contribute to the breakdown of the blood-brain barrier seen in SVD. Hypertension, aging, metabolic syndrome, smoking, hyperglycemia, and elevated homocysteine may promote activation of NADPH oxidase in cerebral arterioles. Inhibition of NADPH oxidase with phycocyanobilin from spirulina, as well as high-dose statin therapy, may have potential for prevention and control of SVD, and high-potassium diets merit study in this regard. Measures which support effective eNOS activity in other ways-exercise training, supplemental citrulline, certain dietary flavonoids (as in cocoa and green tea), and capsaicin, may also improve the function of cerebral arterioles. Asian epidemiology suggests that increased protein intakes may decrease risk for SVD; conceivably, arginine and/or cysteine-which boosts tissue glutathione synthesis, and can be administered as N-acetylcysteine-mediate this benefit. Ameliorating the risk factors for SVD-including hypertension, metabolic syndrome, hyperglycemia, smoking, and elevated homocysteine-also may help to prevent and control this syndrome, although few clinical trials have addressed this issue to date.
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Kim T, Chang JS, Kim H, Lee KH, Kong ID. Intense Walking Exercise Affects Serum IGF-1 and IGFBP3. J Lifestyle Med 2015; 5:21-5. [PMID: 26528426 PMCID: PMC4608228 DOI: 10.15280/jlm.2015.5.1.21] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 02/18/2015] [Indexed: 01/16/2023] Open
Abstract
Background Insulin-like growth factor (IGF-1) is associated with chronic diseases such as diabetes, cardiovascular disease, and hypertension, as well as muscle dysfunction. Previous studies of exercise interventions yield controversial results regarding plasma IGF-1, IGFBP3, and IGF-1/IGFBP3 ratio. In this study, we examined whether 100 km walking exercise affects serum levels of IGF-1 and IGFBP3 and IGF-1/IGFBP3 ratio. We also investigated several metabolic-related blood parameters before and after walking. Methods Participants were 14 healthy middle aged men (41.0 ± 6.78 years of age). We assessed body composition and measured metabolic-related blood indicators, such as such as lipid profiles, glucose, renal and hepatic metabolic bio-markers before and after a 100 km walking race. Blood samples from all participants were taken before and immediately after the walkathon. We also analyzed serum levels of IGF-1 and IGFBP3, and calculated the IGF-1/IGFBP3 ratio. Results After participants completed a 100 km walking race, some of their metabolic profiles were markedly changed. Serum levels of IGF-1 and IGFBP3 were significantly decreased, and therefore the IGF-1/IGFBP3 ratio also decreased before and after 100 km of walking. Conclusion Our results indicate that intense walking exercise affects serum levels of IGF-1 and IGFBP3 as well as metabolic bio-markers including high density cholesterol, glucose and triglycerides.
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Affiliation(s)
- TaeHo Kim
- Department of Physiology and Center for Exercise Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Jae Seung Chang
- Department of Physiology and Center for Exercise Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Hanul Kim
- Department of Physiology and Center for Exercise Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Kwang Ho Lee
- Department of Anesthesiology and Pain Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - In Deok Kong
- Department of Physiology and Center for Exercise Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
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Abstract
High serum levels of insulin-like growth factor I (IGF-I) are associated with an increased risk of sporadic breast cancer (BC). Furthermore, insulin and markers of insulin resistance, such as abdominal obesity, high blood glucose, high serum testosterone and metabolic syndrome, may affect both BC incidence and prognosis. We hypothesized that all these factors might be relevant also for hereditary BC, due to a deleterious mutation of BRCA genes. Epidemiological observation suggested that weight, energy intake (usually associated with higher bio-availability of growth factors) and physical activity may be relevant in BRCA mutation carriers. Mechanistic studies hypothesized a functional interaction between BRCA genes and the IGF-I system. We have provided some evidence that high serum levels of IGF-I are associated with a significantly increased penetrance. We are recruiting a larger cohort of BRCA mutation carriers in order to test potential modulators of penetrance and prognosis. Within this cohort, we have planned a randomized controlled trial to test whether moderate calorie and protein restriction, together with physical activity, decrease IGF-I. Eligible study subjects are women with or without BC, aged 18-70, with a proven deleterious BRCA mutation, and without metastases. All the women will receive recommendations for the dietary prevention of cancer. The women will be then randomized into an active life-style intervention group and into a control group that will receive only the baseline recommendations. We expect to significantly reduce IGF-I in the intervention group. This trial and the subsequent cohort follow-up might open up primary prevention options for genetic BC.
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Naveed S, Aslam M, Ahmad A. Starvation based differential chemotherapy:
a novel approach for cancer treatment. Oman Med J 2015; 29:391-8. [PMID: 25584154 DOI: 10.5001/omj.2014.107] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 11/04/2014] [Indexed: 01/09/2023] Open
Abstract
Cancer patients undergoing chemotherapy treatment are advised to increase food intake to overcome the therapy-induced side effects, and weight loss. Dietary restriction is known to slow down the aging process and hence reduce age-related diseases such as cancer. Fasting or short-term starvation is more effective than dietary restriction to prevent cancer growth since starved cells switch off signals for growth and reproduction and enter a protective mode, while cancer cells, being mutated, are not sensitized by any external growth signals and are not protected against any stress. This phenomenon is known as differential stress resistance (DSR). Nutrient signaling pathways involving growth hormone/insulin-like growth factor-1 axis and its downstream effectors, play a key role in DSR in response to starvation controlling the other cell maintenance systems, such as autophagy and apoptosis, that are related to the tumorigenesis. Yeast cells lacking these effectors are better protected against oxidative stress compared to normal cells. In the same way, starvation protects many cell lines and mice against high-dose chemotherapeutic drugs. According to a series of studies, fasting results in overall reduction in chemotherapy side effects in cancer patients. Data shows that starvation-dependent differential chemotherapy is safe, feasible and effective in cancer treatment, but the possible side effects of starvation limit its efficacy. However, further studies and clinical trials may result in its implementation in cancer treatment.
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Affiliation(s)
- Sidra Naveed
- Institute of Biochemistry and Biotechnology, University of the Punjab, Quaid-i-Azam Campus, Lahore, Pakistan
| | - Muhammad Aslam
- Institute of Biochemistry and Biotechnology, University of the Punjab, Quaid-i-Azam Campus, Lahore, Pakistan
| | - Aftab Ahmad
- School of Biological Sciences, University of the Punjab, Quaid-i-Azam Campus, Lahore, Pakistan
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Pudrovska T, Logan ES, Richman A. Early-life social origins of later-life body weight: the role of socioeconomic status and health behaviors over the life course. SOCIAL SCIENCE RESEARCH 2014; 46:59-71. [PMID: 24767590 PMCID: PMC4150352 DOI: 10.1016/j.ssresearch.2014.02.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Revised: 02/13/2014] [Accepted: 02/17/2014] [Indexed: 05/04/2023]
Abstract
Using the 1957-2004 data from the Wisconsin Longitudinal Study, we apply structural equation modeling to examine gender-specific effects of family socioeconomic status (SES) at age 18 on body weight at age 65. We further explore SES and health behaviors over the life course as mechanisms linking family background and later-life body weight. We find that early-life socioeconomic disadvantage is related to higher body weight at age 65 and a steeper weight increase between midlife and late life. These adverse effects are stronger among women than men. Significant mediators of the effect of parents' SES include adolescent body mass (especially among women) as well as exercise and SES in midlife. Yet, consistent with the critical period mechanism, the effect of early-life SES on late-life body weight persists net of all mediating variables. This study expands current understanding of life-course mechanisms that contribute to obesity and increase biological vulnerability to social disadvantage.
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Affiliation(s)
- Tetyana Pudrovska
- Department of Sociology and Criminology, Population Research Institute, Pennsylvania State University, 514 Oswald Tower, University Park, PA 16802, USA.
| | - Ellis Scott Logan
- Department of Sociology and Criminology, Pennsylvania State University, 412 Oswald Tower, University Park, PA 16802, USA.
| | - Aliza Richman
- Department of Sociology and Criminology, Pennsylvania State University, 318 Oswald Tower, University Park, PA 16802, USA.
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Levine ME, Suarez JA, Brandhorst S, Balasubramanian P, Cheng CW, Madia F, Fontana L, Mirisola MG, Guevara-Aguirre J, Wan J, Passarino G, Kennedy BK, Wei M, Cohen P, Crimmins EM, Longo VD. Low protein intake is associated with a major reduction in IGF-1, cancer, and overall mortality in the 65 and younger but not older population. Cell Metab 2014; 19:407-17. [PMID: 24606898 PMCID: PMC3988204 DOI: 10.1016/j.cmet.2014.02.006] [Citation(s) in RCA: 584] [Impact Index Per Article: 58.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 01/24/2014] [Accepted: 02/10/2014] [Indexed: 01/08/2023]
Abstract
Mice and humans with growth hormone receptor/IGF-1 deficiencies display major reductions in age-related diseases. Because protein restriction reduces GHR-IGF-1 activity, we examined links between protein intake and mortality. Respondents aged 50-65 reporting high protein intake had a 75% increase in overall mortality and a 4-fold increase in cancer death risk during the following 18 years. These associations were either abolished or attenuated if the proteins were plant derived. Conversely, high protein intake was associated with reduced cancer and overall mortality in respondents over 65, but a 5-fold increase in diabetes mortality across all ages. Mouse studies confirmed the effect of high protein intake and GHR-IGF-1 signaling on the incidence and progression of breast and melanoma tumors, but also the detrimental effects of a low protein diet in the very old. These results suggest that low protein intake during middle age followed by moderate to high protein consumption in old adults may optimize healthspan and longevity.
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Affiliation(s)
- Morgan E Levine
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90033, USA
| | - Jorge A Suarez
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90033, USA; Longevity Institute, University of Southern California, Los Angeles, CA 90033, USA
| | - Sebastian Brandhorst
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90033, USA; Longevity Institute, University of Southern California, Los Angeles, CA 90033, USA
| | - Priya Balasubramanian
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90033, USA; Longevity Institute, University of Southern California, Los Angeles, CA 90033, USA
| | - Chia-Wei Cheng
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90033, USA; Longevity Institute, University of Southern California, Los Angeles, CA 90033, USA
| | - Federica Madia
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90033, USA; EURL ECVAM, Institute for Health & Consumer Protection, European Commission Joint Research Centre, Ispra (VA) 21027, Italy
| | - Luigi Fontana
- Department of Medicine, Washington University in St. Louis, St. Louis, MO 63110, USA; Department of Clinical and Experimental Sciences, Brescia University School of Medicine, Brescia 25123, Italy; CEINGE Biotecnologie Avanzate, Napoli 80145, Italy
| | - Mario G Mirisola
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90033, USA; Longevity Institute, University of Southern California, Los Angeles, CA 90033, USA; Dipartimento di Biopatologia e Metodologie Biomediche, Universita' di Palermo, Palermo 90127, Italy
| | | | - Junxiang Wan
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90033, USA; Longevity Institute, University of Southern California, Los Angeles, CA 90033, USA
| | - Giuseppe Passarino
- Department of Biology, Ecology and Earth Science, University of Calabria, Rende 87036, Italy
| | | | - Min Wei
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90033, USA; Longevity Institute, University of Southern California, Los Angeles, CA 90033, USA
| | - Pinchas Cohen
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90033, USA; Longevity Institute, University of Southern California, Los Angeles, CA 90033, USA
| | - Eileen M Crimmins
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90033, USA
| | - Valter D Longo
- Davis School of Gerontology, University of Southern California, Los Angeles, CA 90033, USA; Longevity Institute, University of Southern California, Los Angeles, CA 90033, USA.
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MAGUIRE GREG, FRIEDMAN PETER. Enhancing spontaneous stem cell healing (Review). Biomed Rep 2014; 2:163-166. [PMID: 24649089 PMCID: PMC3917745 DOI: 10.3892/br.2014.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 10/21/2013] [Indexed: 11/05/2022] Open
Abstract
Adult stem cells are distributed throughout the human body and are responsible to a great extent for the body's ability to maintain and heal itself. Accumulating data since the 1990s regarding stem cells have demonstrated that the beneficial effects of stem cells are not restricted to their ability to differentiate and are more likely due to their ability to release a multitude of molecules. Recent studies indicated that ≤80% of the therapeutic benefit of adult stem cells is manifested by the stem cell released molecules (SRM) rather than the differentiation of the stem cells into mature tissue. Stem cells may release potent combinations of factors that modulate the molecular composition of the cellular milieu to evoke a multitude of responses from neighboring cells. A multitude of pathways are involved in cellular and tissue function and, when the body is in a state of disease or trauma, a multitude of pathways are involved in the underlying mechanisms of that disease or trauma. Therefore, stem cells represent a natural systems-based biological factory for the production and release of a multitude of molecules that interact with the system of biomolecular circuits underlying disease or tissue damage. Currently, efforts are aimed at defining, stimulating, enhancing and harnessing SRM mechanisms, in order to develop systems-based methods for tissue regeneration, develop drugs/biologics or other therapeutics and enhance the release of SRM into the body for natural healing through proper dietary, exercise and other lifestyle strategies.
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Affiliation(s)
- GREG MAGUIRE
- BioRegenerative Sciences, Inc., San Diego, CA 92014, USA
| | - PETER FRIEDMAN
- BioRegenerative Sciences, Inc., San Diego, CA 92014, USA
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36
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Rizza W, Veronese N, Fontana L. What are the roles of calorie restriction and diet quality in promoting healthy longevity? Ageing Res Rev 2014; 13:38-45. [PMID: 24291541 DOI: 10.1016/j.arr.2013.11.002] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 11/12/2013] [Accepted: 11/19/2013] [Indexed: 12/17/2022]
Abstract
Epidemiological and experimental data indicate that diet plays a central role in the pathogenesis of many age-associated chronic diseases, and in the biology of aging itself. Data from several animal studies suggest that the degree and time of calorie restriction (CR) onset, the timing of food intake as well as diet composition, play major roles in promoting health and longevity, breaking the old dogma that only calorie intake is important in extending healthy lifespan. Data from human studies indicate that long-term CR with adequate intake of nutrients results in several metabolic adaptations that reduce the risk of developing type 2 diabetes, hypertension, cardiovascular disease and cancer. Moreover, CR opposes the expected age-associated alterations in myocardial stiffness, autonomic function, and gene expression in the human skeletal muscle. However, it is possible that some of the beneficial effects on metabolic health are not entirely due to CR, but to the high quality diets consumed by the CR practitioners, as suggested by data collected in individuals consuming strict vegan diets. More studies are needed to understand the interactions among single nutrient modifications (e.g. protein/aminoacid, fatty acids, vitamins, phytochemicals, and minerals), the degree of CR and the frequency of food consumption in modulating anti-aging metabolic and molecular pathways, and in the prevention of age-associated diseases.
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37
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King B, Jiang Y, Su X, Xu J, Xie L, Standard J, Wang W. Weight control, endocrine hormones and cancer prevention. Exp Biol Med (Maywood) 2013; 238:502-8. [PMID: 23856901 DOI: 10.1177/1535370213480695] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The prevalence of obesity is increasing which becomes worrisome due to its association with several diseases and certain types of cancers. While weight control through dietary caloric restriction and/or physical activity protects against cancer in animal models, the underlying mechanisms are not fully defined. Weight loss due to negative energy balance is associated with alterations of multiple growth factors and endocrine hormones. The altered hormones and hormone-related functions appear to be responsible for anti-cancer mechanisms. In this review, we summarize the recent studies related to weight loss and the altered endocrine hormones, focusing on the reduced levels of the mitogenic insulin-like growth factor 1 (IGF-1) and adipokine leptin as well as the raised levels of adiponectin and glucocorticoids. The potential molecular targets of these hormone-dependent signalling pathways are also discussed. Considering the increasing trends of obesity throughout the world, a better understanding of the underlying mechanisms between body weight, endocrine hormones and cancer risk may lead to novel approaches to cancer prevention and treatment.
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Affiliation(s)
- Brenee King
- Department of Human Nutrition, Kansas State University, Manhattan, KS 66506, USA
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Spitsbergen JM, Buhler DR, Peterson TS. Neoplasia and neoplasm-associated lesions in laboratory colonies of zebrafish emphasizing key influences of diet and aquaculture system design. ILAR J 2013; 53:114-25. [PMID: 23382343 DOI: 10.1093/ilar.53.2.114] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
During the past decade, the zebrafish has emerged as a leading model for mechanistic cancer research because of its sophisticated genetic and genomic resources, its tractability for tissue targeting of transgene expression, its efficiency for forward genetic approaches to cancer model development, and its cost effectiveness for enhancer and suppressor screens once a cancer model is established. However, in contrast with other laboratory animal species widely used as cancer models, much basic cancer biology information is lacking in zebrafish. As yet, data are not published regarding dietary influences on neoplasm incidences in zebrafish. Little information is available regarding spontaneous tumor incidences or histologic types in wild-type lines of zebrafish. So far, a comprehensive database documenting the full spectrum of neoplasia in various organ systems and tissues is not available for zebrafish as it is for other intensely studied laboratory animal species. This article confirms that, as in other species, diet and husbandry can profoundly influence tumor incidences and histologic spectra in zebrafish. We show that in many laboratory colonies wild-type lines of zebrafish exhibit elevated neoplasm incidences and neoplasm-associated lesions such as heptocyte megalocytosis. We present experimental evidence showing that certain diet and water management regimens can result in high incidences of neoplasia and neoplasm-associated lesions. We document the wide array of benign and malignant neoplasms affecting nearly every organ, tissue, and cell type in zebrafish, in some cases as a spontaneous aging change, and in other cases due to carcinogen treatment or genetic manipulation.
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Affiliation(s)
- Jan M Spitsbergen
- Department of Microbiology, Oregon State University, Corvallis, OR 97331, USA.
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39
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Argos M, Melkonian S, Parvez F, Rakibuz-Zaman M, Ahmed A, Chen Y, Ahsan H. A population-based prospective study of energy-providing nutrients in relation to all-cause cancer mortality and cancers of digestive organs mortality. Int J Cancer 2013; 133:2422-8. [PMID: 23650102 DOI: 10.1002/ijc.28250] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Accepted: 04/15/2013] [Indexed: 12/30/2022]
Abstract
The effect of dietary composition on mortality in low-income countries is largely unknown. We evaluated whether percentages of dietary energy derived from protein, fat and carbohydrates were associated with all-cause and cancer mortalities in a Bangladeshi population. Data from a prospective population-based cohort study of 17,244 men and women were used. Percentages of dietary energy derived from protein, fat and carbohydrates, assessed using a validated food-frequency questionnaire at baseline, were analyzed in relation to mortality over an average of 9 years (155,126 person-years) of follow-up. Cox proportional hazards regression models were used to estimate hazard ratios for all cause, all cancer and cancers of the digestive organs mortalities. Percentage of dietary energy from protein appeared to be significantly associated with cancer mortality. Fully adjusted hazard ratios for cancer mortality in increasing tertiles of percentage of dietary energy from protein were 1.0 (reference), 1.21 (0.73, 2.00) and 1.84 (1.08, 3.15) (p for trend = 0.023). These associations were much stronger for deaths from cancers of the digestive organs with fully adjusted hazard ratios in increasing tertiles of percentage of dietary energy from protein being 1.0 (reference), 2.25 (0.91, 5.59) and 4.85 (1.88, 12.51) (p for trend = 0.001). No significant associations in relation to cancer-related mortality were observed for percentage of dietary energy from fat. Novel findings from this prospective study show protein is an important risk factor or proxy to an important risk factor for cancer mortality especially from digestive organ cancers in Bangladesh.
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Affiliation(s)
- Maria Argos
- Department of Health Studies, The University of Chicago, Chicago, IL
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Djiogue S, Nwabo Kamdje AH, Vecchio L, Kipanyula MJ, Farahna M, Aldebasi Y, Seke Etet PF. Insulin resistance and cancer: the role of insulin and IGFs. Endocr Relat Cancer 2013. [PMID: 23207292 DOI: 10.1530/erc-12-0324] [Citation(s) in RCA: 193] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Insulin, IGF1, and IGF2 are the most studied insulin-like peptides (ILPs). These are evolutionary conserved factors well known as key regulators of energy metabolism and growth, with crucial roles in insulin resistance-related metabolic disorders such as obesity, diseases like type 2 diabetes mellitus, as well as associated immune deregulations. A growing body of evidence suggests that insulin and IGF1 receptors mediate their effects on regulating cell proliferation, differentiation, apoptosis, glucose transport, and energy metabolism by signaling downstream through insulin receptor substrate molecules and thus play a pivotal role in cell fate determination. Despite the emerging evidence from epidemiological studies on the possible relationship between insulin resistance and cancer, our understanding on the cellular and molecular mechanisms that might account for this relationship remains incompletely understood. The involvement of IGFs in carcinogenesis is attributed to their role in linking high energy intake, increased cell proliferation, and suppression of apoptosis to cancer risks, which has been proposed as the key mechanism bridging insulin resistance and cancer. The present review summarizes and discusses evidence highlighting recent advances in our understanding on the role of ILPs as the link between insulin resistance and cancer and between immune deregulation and cancer in obesity, as well as those areas where there remains a paucity of data. It is anticipated that issues discussed in this paper will also recover new therapeutic targets that can assist in diagnostic screening and novel approaches to controlling tumor development.
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Affiliation(s)
- Sefirin Djiogue
- Department of Animal Biology and Physiology, University of Yaoundé 1, PO Box 812, Yaoundé, Cameroon
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Jiménez-Chillarón JC, Díaz R, Martínez D, Pentinat T, Ramón-Krauel M, Ribó S, Plösch T. The role of nutrition on epigenetic modifications and their implications on health. Biochimie 2012; 94:2242-63. [DOI: 10.1016/j.biochi.2012.06.012] [Citation(s) in RCA: 151] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Accepted: 06/11/2012] [Indexed: 02/06/2023]
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Mukaetova-Ladinska EB, Purshouse K, Andrade J, Krishnan M, Jagger C, Kalaria RN. Can healthy lifestyle modify risk factors for dementia? Findings from a pilot community-based survey in Chennai (India) and Newcastle (UK). Neuroepidemiology 2012; 39:163-70. [PMID: 22948094 DOI: 10.1159/000338674] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Accepted: 03/30/2012] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Currently there are no effective treatments available for dementia. Attention has turned to defining preventive strategies and identifying modifying effects of lifestyle, including physical activity, diet, alcohol intake and smoking, in reducing cognitive decline and overt memory problems in the elderly. METHODS In this study, we addressed the modifying aspects of various components of lifestyle in two ageing samples and explored the possible effects that exercise, diet and spiritual and religious beliefs have upon physical and mental health. A total of 251 subjects (128 in Chennai, India, and 123 in Newcastle, UK) filled in a questionnaire regarding their lifestyle habits. Data were analysed with χ² analysis. RESULTS Our findings highlight that spiritual and religious beliefs promoted good physical and mental health and were negatively associated with risk factors for dementia, such as high blood pressure, high cholesterol level and diabetes. Lifelong diet and physical activity also contributed to better overall well-being in both samples. CONCLUSIONS Our study suggests substantial lifestyle variations between two urban populations in Chennai, India, and Newcastle-upon-Tyne, UK. Further detailed work is required to identify the lifestyle components that have the greatest impact on modifying the known risk factors for dementia.
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Dietrich MO, Horvath TL. Limitations in anti-obesity drug development: the critical role of hunger-promoting neurons. Nat Rev Drug Discov 2012; 11:675-91. [DOI: 10.1038/nrd3739] [Citation(s) in RCA: 148] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Mercken EM, Carboneau BA, Krzysik-Walker SM, de Cabo R. Of mice and men: the benefits of caloric restriction, exercise, and mimetics. Ageing Res Rev 2012; 11:390-8. [PMID: 22210414 DOI: 10.1016/j.arr.2011.11.005] [Citation(s) in RCA: 212] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Revised: 11/09/2011] [Accepted: 11/18/2011] [Indexed: 12/25/2022]
Abstract
During aging there is an increasing imbalance of energy intake and expenditure resulting in obesity, frailty, and metabolic disorders. For decades, research has shown that caloric restriction (CR) and exercise can postpone detrimental aspects of aging. These two interventions invoke a similar physiological signature involving pathways associated with stress responses and mitochondrial homeostasis. Nonetheless, CR is able to delay aging processes that result in an increase of both mean and maximum lifespan, whereas exercise primarily increases healthspan. Due to the strict dietary regime necessary to achieve the beneficial effects of CR, most studies to date have focused on rodents and non-human primates. As a consequence, there is vast interest in the development of compounds such as resveratrol, metformin and rapamycin that would activate the same metabolic- and stress-response pathways induced by these interventions without actually restricting caloric intake. Therefore the scope of this review is to (i) describe the benefits of CR and exercise in healthy individuals, (ii) discuss the role of these interventions in the diseased state, and (iii) examine some of the promising pharmacological alternatives such as CR- and exercise-mimetics.
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A critical review of recommendations to increase dietary protein requirements in the habitually active. Nutr Res Rev 2012; 25:142-9. [PMID: 22340626 DOI: 10.1017/s0954422412000030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Some scientists and professional organisations have called for an increase in dietary protein for those who reach a threshold level of exercise, i.e. endurance athletes. But there are individual scientists who question this recommendation. Limitations in the procedures used to justify changing the recommended daily allowance (RDA) are at issue. N balance has been used to justify this increase; but it is limiting even when measured in a well-controlled clinical research centre. Experimental shortcomings are only exacerbated when performed in a sports or exercise field setting. Another laboratory method used to justify this increase, the isotope infusion procedure, has methodological problems as well. Stable isotope infusion data collected during and after exercise cannot account for fed-state gains that counterbalance those exercise losses over a 24 h dietary period. The present review concludes that an adaptive metabolic demand model may be needed to accurately study the protein health of the active individual.
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Abstract
Although several early phase clinical trials raised enthusiasm for the use of insulin-like growth factor I receptor (IGF1R)-specific antibodies for cancer treatment, initial Phase III results in unselected patients have been disappointing. Further clinical studies may benefit from the use of predictive biomarkers to identify probable responders, the use of rational combination therapies and the consideration of alternative targeting strategies, such as ligand-specific antibodies and receptor-specific tyrosine kinase inhibitors. Targeting insulin and IGF signalling also needs to be considered in the broader context of the pathophysiology that relates obesity and diabetes to neoplasia, and the effects of anti-diabetic drugs, including metformin, on cancer risk and prognosis. The insulin and IGFI receptor family is also relevant to the development of PI3K-AKT pathway inhibitors.
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Affiliation(s)
- Michael Pollak
- Lady Davis Research Institute and McGill University, Montreal, Quebec H3T1E2, Canada.
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Pasanisi P, Bruno E, Venturelli E, Manoukian S, Barile M, Peissel B, De Giacomi C, Bonanni B, Berrino J, Berrino F. Serum levels of IGF-I and BRCA penetrance: a case control study in breast cancer families. Fam Cancer 2012; 10:521-8. [PMID: 21455766 DOI: 10.1007/s10689-011-9437-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
High serum levels of insulin-like growth factor I (IGF-I) are associated with an increased risk of sporadic breast cancer (BC). The aim of the present work is to evaluate the association between IGF-I and hereditary BC risk, using a case-control approach. The work represents an "ad interim" cross-sectional analysis of an ongoing study with a prospective design whose aim is to recruit a cohort of women belonging to high genetic risk families to test potential modulators of penetrance and prognosis. The odd of exposure to high serum IGF-I levels among women with a previous diagnosis of BC ("cases") was compared with the odd among unaffected "controls". The odds ratio (OR) and 95% confidence intervals (CIs) were estimated by unconditional logistic regression, controlling for confounders. We analysed 308 women (209 cases and 99 controls) at high genetic risk of BC. The adjusted OR of BC for the upper tertile of serum IGF-I versus the lowest one was 3.5 (95%CI 1.4-8.8). Excluding from the analysis 64 women under current Tamoxifen or GnRH analogues treatment, the adjusted OR of BC became 3.7 (95%CI 1.4-9.9). The association became stronger restricting the analysis to the 161 women (97 cases and 64 controls) with a proven BRCA mutation. If confirmed by a prospective approach, the association between IGF-I and familial BC will open further options for reducing BC risk in susceptible women.
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Affiliation(s)
- Patrizia Pasanisi
- Etiological and Preventive Epidemiology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
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Minimizing the cancer-promotional activity of cox-2 as a central strategy in cancer prevention. Med Hypotheses 2012; 78:45-57. [DOI: 10.1016/j.mehy.2011.09.039] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Accepted: 09/19/2011] [Indexed: 02/06/2023]
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Abstract
Weight control via dietary caloric restriction and/or physical activity has been demonstrated in animal models for cancer prevention. However, the underlying mechanisms are not fully understood. Body weight loss due to negative energy balance significantly reduces some metabolic growth factors and endocrinal hormones such as IGF-1, leptin, and adiponectin, but enhances glucocorticoids, that may be associated with anti-cancer mechanisms. In this review, we summarized the recent studies related to weight control and growth factors. The potential molecular targets focused on those growth factors- and hormones-dependent cellular signaling pathways are further discussed. It appears that multiple factors and multiple signaling cascades, especially for Ras-MAPK-proliferation and PI3K-Akt-anti-apoptosis, could be involved in response to weight change by dietary calorie restriction and/or exercise training. Considering prevalence of obesity or overweight that becomes apparent over the world, understanding the underlying mechanisms among weight control, endocrine change and cancer risk is critically important. Future studies using "-omics" technologies will be warrant for a broader and deeper mechanistic information regarding cancer prevention by weight control.
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Affiliation(s)
- YU JIANG
- Department of Human Nutrition, Kansas State University, Manhattan, KS 66506, USA
| | - WEIQUN WANG
- Department of Human Nutrition, Kansas State University, Manhattan, KS 66506, USA
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Lee C, Longo VD. Fasting vs dietary restriction in cellular protection and cancer treatment: from model organisms to patients. Oncogene 2011; 30:3305-16. [PMID: 21516129 DOI: 10.1038/onc.2011.91] [Citation(s) in RCA: 193] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The dietary recommendation for cancer patients receiving chemotherapy, as described by the American Cancer Society, is to increase calorie and protein intake. Yet, in simple organisms, mice, and humans, fasting--no calorie intake--induces a wide range of changes associated with cellular protection, which would be difficult to achieve even with a cocktail of potent drugs. In mammals, the protective effect of fasting is mediated, in part, by an over 50% reduction in glucose and insulin-like growth factor 1 (IGF-I) levels. Because proto-oncogenes function as key negative regulators of the protective changes induced by fasting, cells expressing oncogenes, and therefore the great majority of cancer cells, should not respond to the protective signals generated by fasting, promoting the differential protection (differential stress resistance) of normal and cancer cells. Preliminary reports indicate that fasting for up to 5 days followed by a normal diet, may also protect patients against chemotherapy without causing chronic weight loss. By contrast, the long-term 20 to 40% restriction in calorie intake (dietary restriction, DR), whose effects on cancer progression have been studied extensively for decades, requires weeks-months to be effective, causes much more modest changes in glucose and/or IGF-I levels, and promotes chronic weight loss in both rodents and humans. In this study, we review the basic as well as clinical studies on fasting, cellular protection and chemotherapy resistance, and compare them to those on DR and cancer treatment. Although additional pre-clinical and clinical studies are necessary, fasting has the potential to be translated into effective clinical interventions for the protection of patients and the improvement of therapeutic index.
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Affiliation(s)
- C Lee
- Andrus Gerontology Center, Department of Biological Sciences and Norris Cancer Center, University of Southern California, Los Angeles, CA 90089-0191, USA
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