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Zamary KM, Bruno RS. Advances in nutrition approaches to support vascular and gut health: 2023 David Kritchevsky Award winners. Nutr Res 2024; 124:111-115. [PMID: 38574579 DOI: 10.1016/j.nutres.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 04/06/2024]
Affiliation(s)
- Kaitlyn M Zamary
- Human Nutrition Program, The Ohio State University, Columbus, Ohio 43210
| | - Richard S Bruno
- Human Nutrition Program, The Ohio State University, Columbus, Ohio 43210.
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Bruno RS, Zamary K. Reemergence from the pandemic, annual awards, and editorial office updates: from the desk of the Editor-in-Chief, Nutrition Research. Nutr Res 2024; 123:131-136. [PMID: 37474411 DOI: 10.1016/j.nutres.2023.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Affiliation(s)
- Richard S Bruno
- Human Nutrition Program, The Ohio State University, Columbus, Ohio 43210.
| | - Katie Zamary
- Human Nutrition Program, The Ohio State University, Columbus, Ohio 43210
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Cyphert EL, Liu C, Morales AL, Nixon JC, Blackford E, Garcia M, Cevallos N, Turnbaugh PJ, Brito IL, Booth SL, Hernandez CJ. Effects of long-term high dose aspartame on body mass, bone strength, femoral geometry, and microbiota composition in a young and aged cohort of male and female mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.02.573970. [PMID: 38260245 PMCID: PMC10802297 DOI: 10.1101/2024.01.02.573970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Background Recent reassessment of the safety of aspartame has prompted increased evaluation of its effect on the health of a range of tissues. The gut microbiome is altered by oral aspartame. One prior study suggested that changes in the microbiome caused by aspartame could influence the strength of bone in young skeletally developing mice. Here we ask how aspartame influences bone in mice of different age and sex. Objective The objective of this study was to determine the effect of aspartame on the bone strength and gut microbiota of young and aged mice. Methods Male and female C57Bl/6J mice were untreated or treated with a high dose of aspartame in their drinking water from 1 month of age until 4 (young cohort; n = 80) or 22 months (aged cohort; n = 52). Results In aged males, mice treated with aspartame had greater body mass, whole bone strength, and femoral geometry relative to untreated. Specifically, in aged males, aspartame led to 9% increase in body mass (p < 0.001), 22% increase in whole bone strength (p = 0.006), and 17% increase in section modulus (p < 0.001) relative to untreated mice. Aged males and females receiving aspartame had a different microbiota than untreated mice and a decreased abundance of Odoribacter. No differences in body mass, whole bone strength, or femoral geometry were associated with aspartame dosing in young males or young or aged females. Conclusions Aspartame treated aged males had greater whole bone strength and the effect appeared to be explained by greater body mass. Aspartame treatment did not alter whole bone strength in young males or young or aged females despite the aspartame having a similar effect on the microbiota of both aged males and females.
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Affiliation(s)
- Erika L. Cyphert
- Department of Orthopaedic Surgery, University of California San Francisco, 400 Parnassus Avenue, San Francisco, CA 94143
- Sibley School of Mechanical & Aerospace Engineering, Cornell University, 124 Hoy Road, Ithaca, NY 14853
| | - Chongshan Liu
- Sibley School of Mechanical & Aerospace Engineering, Cornell University, 124 Hoy Road, Ithaca, NY 14853
| | - Angie L. Morales
- Sibley School of Mechanical & Aerospace Engineering, Cornell University, 124 Hoy Road, Ithaca, NY 14853
| | - Jacob C. Nixon
- Sibley School of Mechanical & Aerospace Engineering, Cornell University, 124 Hoy Road, Ithaca, NY 14853
| | - Emily Blackford
- Sibley School of Mechanical & Aerospace Engineering, Cornell University, 124 Hoy Road, Ithaca, NY 14853
| | - Matthew Garcia
- Sibley School of Mechanical & Aerospace Engineering, Cornell University, 124 Hoy Road, Ithaca, NY 14853
| | - Nicolas Cevallos
- Department of Orthopaedic Surgery, University of California San Francisco, 400 Parnassus Avenue, San Francisco, CA 94143
| | - Peter J. Turnbaugh
- Department of Microbiology and Immunology, University of California San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143
- Chan Zuckerberg Biohub – San Francisco, San Francisco, CA 94143
| | - Ilana L. Brito
- Meinig School of Biomedical Engineering, Cornell University, 101 Weill Hall, Ithaca, NY 14853
| | - Sarah L. Booth
- Jean Mayer USDA Human Nutrition Research Center on Aging, 711 Washington Street, Tufts University, Boston, MA 02111
| | - Christopher J. Hernandez
- Department of Orthopaedic Surgery, University of California San Francisco, 400 Parnassus Avenue, San Francisco, CA 94143
- Chan Zuckerberg Biohub – San Francisco, San Francisco, CA 94143
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, 400 Parnassus Avenue, San Francisco, CA 94158
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Interrelationship between Vitamin D and Calcium in Obesity and Its Comorbid Conditions. Nutrients 2022; 14:nu14153187. [PMID: 35956362 PMCID: PMC9370653 DOI: 10.3390/nu14153187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 07/24/2022] [Accepted: 07/31/2022] [Indexed: 02/01/2023] Open
Abstract
Obesity has been linked to vitamin D (VD) deficiency and low calcium (CAL) status. In the last decade, dietary supplementation of vitamin D and calcium (VD–CAL) have been extensively studied in animal experiments and human studies. However, the physiological mechanisms remain unknown as to whether the VD–CAL axis improves homeostasis and reduces biomarkers in regulating obesity and other metabolic diseases directly or indirectly. This review sought to investigate their connections. This topic was examined in scientific databases such as Web of Science, Scopus, and PubMed from 2011 to 2021, and 87 articles were generated for interpretation. Mechanistically, VD–CAL regulates from the organs to the blood, influencing insulin, lipids, hormone, cell, and inflammatory functions in obesity and its comorbidities, such as non-alcoholic fatty liver disease, cardiovascular disease, and type-2 diabetes mellitus. Nevertheless, previous research has not consistently shown that simultaneous VD–CAL supplementation affects weight loss or reduces fat content. This discrepancy may be influenced by population age and diversity, ethnicity, and geographical location, and also by degree of obesity and applied doses. Therefore, a larger prospective cohort and randomised trials are needed to determine the exact role of VD–CAL and their interrelationship.
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Jensen VFH, Mølck AM, Dalgaard M, McGuigan FE, Akesson KE. Changes in bone mass associated with obesity and weight loss in humans: Applicability of animal models. Bone 2021; 145:115781. [PMID: 33285255 DOI: 10.1016/j.bone.2020.115781] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 11/05/2020] [Accepted: 11/27/2020] [Indexed: 12/21/2022]
Abstract
The implications of obesity and weight loss for human bone health are not well understood. Although the bone changes associated with weight loss are similar in humans and rodents, that is not the case for obesity. In humans, obesity is generally associated with increased bone mass, an outcome which is exacerbated by advanced age and menopause. In rodents, by contrast, bone mass decreases in proportion to severity and duration of obesity, and is influenced by sex, age and mechanical load. Despite these discrepancies, rodents are frequently used to model the situation in humans. In this review, we summarise the existing knowledge of the effects of obesity and weight loss on bone mass in humans and rodents, focusing on the translatability of findings from animal models. We then describe how animal models should be used to broaden the understanding of the relationship between obesity, weight loss, and skeletal health in humans. Specifically, we highlight the aspects of study design that should be considered to optimise translatability of the rodent models of obesity and weight loss. Notably, the sex, age, and nutritional status of the animals should ideally match those of interest in humans. With these caveats in mind, and depending on the research question asked, our review underscores that animal models can provide valuable information for obesity and weight-management research.
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Affiliation(s)
- Vivi F H Jensen
- Lund University, Department of Clinical Sciences Malmö and Skåne University Hospital, Department of Orthopedics, Inga Marie Nilssons Gata 22, 205 02 Malmö, Sweden.
| | - Anne-Marie Mølck
- Novo Nordisk A/S, Department of Safety Sciences, Imaging & Data Management, Novo Nordisk Park 1, 2760 Maaloev, Denmark
| | - Majken Dalgaard
- Novo Nordisk A/S, Department of Safety Sciences, Imaging & Data Management, Novo Nordisk Park 1, 2760 Maaloev, Denmark
| | - Fiona E McGuigan
- Lund University, Department of Clinical Sciences Malmö and Skåne University Hospital, Department of Orthopedics, Inga Marie Nilssons Gata 22, 205 02 Malmö, Sweden
| | - Kristina E Akesson
- Lund University, Department of Clinical Sciences Malmö and Skåne University Hospital, Department of Orthopedics, Inga Marie Nilssons Gata 22, 205 02 Malmö, Sweden
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Wang Y, Miller JW, Bello NT, Shapses SA. Low-vitamin-D diet lowers cerebral serotonin concentration in mature female mice. Nutr Res 2020; 81:71-80. [PMID: 32920521 DOI: 10.1016/j.nutres.2020.07.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 04/21/2020] [Accepted: 07/16/2020] [Indexed: 01/07/2023]
Abstract
Low circulating 25-hydroxyvitamin D (25OHD) is commonly found in obese individuals and is often attributed to a volume dilution effect of adipose tissue. However, low vitamin D (LD) intake may contribute to the obesity itself. In this study, we examine whether low vitamin D status contributes to increased food intake and weight gain and can be explained by altered brain serotonin metabolism in 8-month-old female C57BL/6J mice. In a first experiment, mice were fed a 45% high-fat diet (HFD) containing different amounts of vitamin D at low (100 IU/kg), normal (1,000 IU/kg) or high (10,000 IU/kg) intake. After 10 weeks, mice fed LD had greater energy intake, weight gain, total and hepatic fat than the higher vitamin D groups (P < .05). In a second experiment, mice were examined for the central serotonin regulation of food intake after a 10% normal-fat diet (NFD) or 45% HFD containing low (100 IU/kg) or normal (1000 IU/kg) vitamin D. After 10 weeks, both HFD and LD diets attenuated circulating 25OHD concentration. Additionally, LD intake lowered cortical serotonin level, regardless of dietary fat intake (P < .05). In the arcuate and raphe nuclei, gene expression of vitamin D 1α-hydroxylase was lower due to LD during HFD feeding (P < .05). Tryptophan hydroxylase-2 and serotonin reuptake transporter gene expression was not altered due to LD. Overall, these findings suggest that a LD diet alters peripheral 25OHD, reduces central serotonin, and may contribute to weight gain in an obesogenic environment.
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Affiliation(s)
- Yang Wang
- Department of Nutritional Sciences, Rutgers University, New Brunswick, NJ, USA
| | - Joshua W Miller
- Department of Nutritional Sciences, Rutgers University, New Brunswick, NJ, USA
| | - Nicholas T Bello
- Department of Animal Sciences, Rutgers University, New Brunswick, NJ, USA
| | - Sue A Shapses
- Department of Nutritional Sciences, Rutgers University, New Brunswick, NJ, USA; Department of Medicine, Rutgers-RWJ Medical School, New Brunswick, NJ.
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Abstract
PURPOSE OF REVIEW This review outlines the recent findings regarding the impact of bariatric surgery on bone. It explores potential mechanisms for skeletal changes following bariatric surgery and strategies for management. RECENT FINDINGS Bone loss following bariatric surgery is multifactorial. Probable mechanisms include skeletal unloading, abnormalities in calciotropic hormones, and changes in gut hormones. Skeletal changes that occur after bariatric surgery are specific to procedure type and persist for several years post-operatively. Studies suggest that while bone loss begins early, fracture risk may be increased later in the post-operative course, particularly after Roux-en-Y gastric bypass (RYGB). Further research is needed to assess the extent to which skeletal changes following bariatric surgery result in fragility. Current management should be geared toward prevention of bone loss, correction of nutritional deficiencies, and incorporation of weight bearing exercise. Pharmacologic treatment should be considered for high-risk patients.
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Affiliation(s)
- Alexandra N Krez
- Endocrinology and Metabolic Bone Disease Service, Hospital for Special Surgery New York, New York, USA
| | - Emily M Stein
- Endocrinology and Metabolic Bone Disease Service, Hospital for Special Surgery New York, New York, USA.
- Weill Cornell Medical College, 535 East 70th Street, New York, NY, 10021, USA.
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The Impact of Obesity on the Association between Vitamin D Deficiency and Cardiovascular Disease. Nutrients 2019; 11:nu11102458. [PMID: 31615154 PMCID: PMC6835874 DOI: 10.3390/nu11102458] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/07/2019] [Accepted: 10/09/2019] [Indexed: 12/22/2022] Open
Abstract
The aim of this article is to review the literature regarding the relationship between vitamin D deficiency and cardiovascular disease (CVD) and its modification in the presence of obesity. Despite the strong association between vitamin D status and cardiovascular outcomes, vitamin D supplementation trials in the general population have failed to decrease the incidence of cardiovascular events and mortality. A comprehensive study of the published literature and a comparison with experimental data lead to the conclusion that obesity, due to its high prevalence and strong association with both vitamin D deficiency and CVD, may act as a critical confounder, which is responsible for the different results on this association. Adoption of a vitamin D preventive supplementation strategy for CVD is unlikely to yield any benefit to the general population. However, it might be particularly useful in obese adults with increased risk for CVD.
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