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Ma O, Dutta A, Bliss DW, Nakatsu CH, Weaver CM, Whisner CM. Identifying Gut Microbiome Features that Predict Responsiveness Toward a Prebiotic Capable of Increasing Calcium Absorption: A Pilot Study. Calcif Tissue Int 2024; 114:513-523. [PMID: 38656326 PMCID: PMC11061023 DOI: 10.1007/s00223-024-01201-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 02/20/2024] [Indexed: 04/26/2024]
Abstract
Previously, we demonstrated that prebiotics may provide a complementary strategy for increasing calcium (Ca) absorption in adolescents which may improve long-term bone health. However, not all children responded to prebiotic intervention. We determine if certain baseline characteristics of gut microbiome composition predict prebiotic responsiveness. In this secondary analysis, we compared differences in relative microbiota taxa abundance between responders (greater than or equal to 3% increase in Ca absorption) and non-responders (less than 3% increase). Dual stable isotope methodologies were used to assess fractional Ca absorption at the end of crossover treatments with placebo, 10, and 20 g/day of soluble corn fiber (SCF). Microbial DNA was obtained from stool samples collected before and after each intervention. Sequencing of the 16S rRNA gene was used to taxonomically characterize the gut microbiome. Machine learning techniques were used to build a predictive model for identifying responders based on baseline relative taxa abundances. Model output was used to infer which features contributed most to prediction accuracy. We identified 19 microbial features out of the 221 observed that predicted responsiveness with 96.0% average accuracy. The results suggest a simplified prescreening can be performed to determine if a subject's bone health may benefit from a prebiotic. Additionally, the findings provide insight and prompt further investigation into the metabolic and genetic underpinnings affecting calcium absorption during pubertal bone development.
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Affiliation(s)
- Owen Ma
- Electrical Engineering, Arizona State University, 650 E Tyler Mall, Tempe, AZ, 85281, USA.
| | - Arindam Dutta
- Electrical Engineering, Arizona State University, 650 E Tyler Mall, Tempe, AZ, 85281, USA
| | - Daniel W Bliss
- Electrical Engineering, Arizona State University, 650 E Tyler Mall, Tempe, AZ, 85281, USA
| | - Cindy H Nakatsu
- Agronomy, Purdue University, 915 Mitch Daniels Boulevard, West Lafayette, IN, 10587, USA
| | - Connie M Weaver
- Exercise and Nutritional Sciences, San Diego State University, 5500 Campanile Drive, San Diego, CA, 92182, USA
| | - Corrie M Whisner
- Health Solutions, Arizona State University, 500 N 3rd Street, Phoenix, AZ, 85004, USA
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Rodrick E, Kindler JM. Bone mass accrual in children. Curr Opin Endocrinol Diabetes Obes 2024; 31:53-59. [PMID: 38010050 PMCID: PMC11015822 DOI: 10.1097/med.0000000000000849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
PURPOSE OF REVIEW Bone accrual during childhood and adolescence is critical for the attainment of peak bone mass and is a major contributing factor towards osteoporosis in later life. Bone mass accrual is influenced by nonmodifiable factors, such as genetics, sex, race, ethnicity, and puberty, as well as modifiable factors, such as physical activity and diet. Recent progress in bone imaging has allowed clinicians and researchers to better measure the morphology, density, and strength of the growing skeleton, thereby encompassing key characteristics of peak bone strength. In this review, the patterning of bone accrual and contributors to these changes will be described, as well as new techniques assessing bone mass and strength in pediatric research and clinical settings. RECENT FINDINGS This review discusses factors influencing peak bone mass attainment and techniques used to assess the human skeleton. SUMMARY The rate of bone accrual and the magnitude of peak bone mass attainment occurs in specific patterns varying by sex, race, ethnicity, longitudinal growth, and body composition. Physical activity, diet, and nutritional status impact these processes. There is a need for longitudinal studies utilizing novel imaging modalities to unveil factors involved in the attainment and maintenance of peak bone strength.
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Affiliation(s)
- Eugene Rodrick
- University of Georgia, Department of Nutritional Sciences, Athens, Georgia, USA
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Bevilacqua A, Campaniello D, Speranza B, Racioppo A, Sinigaglia M, Corbo MR. An Update on Prebiotics and on Their Health Effects. Foods 2024; 13:446. [PMID: 38338581 PMCID: PMC10855651 DOI: 10.3390/foods13030446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 01/20/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024] Open
Abstract
Prebiotic compounds were originally defined as "a nondigestible food ingredient that beneficially affects the host by selectively stimulating the growth and/or activity of one or a limited number of bacteria in the colon, and thus improves host health"; however, a significant modulation of the definition was carried out in the consensus panel of The International Scientific Association for Probiotics and Prebiotics (ISAPP), and the last definition states that "prebiotics are substrates that are selectively utilized by host microorganisms conferring a health benefit". Health effects of prebiotics compounds attracted the interest of researchers, food companies and Regulatory Agencies, as inferred by the number of articles on Scopus for the keywords "prebiotic" and "health effects", that is ca. 2000, for the period January 2021-January 2024. Therefore, the aim of this paper is to contribute to the debate on these topics by offering an overview of existing knowledge and advances in this field. A literature search was performed for the period 2012-2023 and after the selection of the most relevant items, the attention was focused on seven conditions for which at least 8-10 different studies were found, namely colorectal cancer, neurological or psychiatric conditions, intestinal diseases, obesity, diabetes, metabolic syndrome, and immune system disorders. In addition, the analysis of the most recent articles through the software VosViewer version 1.6.20 pointed out the existence of five clusters or macro-categories, namely: (i) pathologies; (ii) metabolic condvitions; (iii) structure and use in food; (iv) immunomodulation; (v) effect on gut microbiota.
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Affiliation(s)
| | | | | | | | | | - Maria Rosaria Corbo
- Department of the Science of Agriculture, Food, Natural Resources and Engineering, University of Foggia, 71122 Foggia, Italy; (A.B.); (D.C.); (B.S.); (A.R.); (M.S.)
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Coheley LM, Yu M, Chen X, O'Connor PJ, Kealey KS, Laing EM, Oshri A, Marand AK, Lance JM, Kindler JM, Lewis RD. The Impact of Whole Egg Consumption on Bone Accrual in Healthy Children: A Randomized Controlled Trial. J Bone Miner Res 2023; 38:1809-1821. [PMID: 37950643 PMCID: PMC11037861 DOI: 10.1002/jbmr.4929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 10/13/2023] [Accepted: 10/27/2023] [Indexed: 11/13/2023]
Abstract
Dietary interventions designed to examine the role of nutrition on childhood bone accrual have often focused on the role of individual micronutrients (eg, calcium, vitamin D, and zinc) and macronutrients (eg, protein). The osteogenic benefits of whole foods, such as eggs, are not well understood despite eggs being a source of high-quality nutrients and bioactive compounds known to positively influence bone. A significant positive cross-sectional association between whole egg consumption and tibia cortical bone mass has recently been shown in young children; however, randomized controlled trials (RCTs) have not been conducted. This study is a double-blind RCT in male and female children ages 9-13 years of different ancestries, designed to determine if consuming food products with whole eggs (equivalent to 8-10 eggs/wk) versus foods with milk or gelatin (placebo) over a 9-month period will improve measures of bone strength. Total body less head (TBLH) and lumbar spine bone mineral content (BMC) and areal bone mineral density (aBMD) were assessed using dual-energy X-ray absorptiometry (DXA). DXA Z-scores were computed using published pediatric growth charts and were adjusted for height-for-age Z-score (HAZ). Mid-tibia cortical volumetric BMD, BMC, cortical area, total bone area, cortical thickness, and strength strain index were measured using peripheral quantitative computed tomography. Overall, there were no significant intervention effects for any bone outcomes. The increase in spine BMCHAZ Z-score in the egg group versus the gelatin group approached significance (p = 0.07). Significant time effects in TBLH aBMDHAZ Z-score occurred as all groups decreased over 9 months (p < 0.03). Most tibia cortical bone outcomes increased over time (all p < 0.02), but changes did not differ across intervention groups. Whole eggs provide important nutritional benefits for children, but the bone responses to consumption of 8-10 eggs/wk over a period of 9 months in children entering the early stages of puberty were small. © 2023 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Lauren M Coheley
- Department of Nutrition, Texas A&M University, College Station, TX, USA
| | - Mengyun Yu
- Department of Statistics, University of Georgia, Athens, GA, USA
| | - Xianyan Chen
- Department of Statistics, University of Georgia, Athens, GA, USA
| | | | - Kirk S Kealey
- Food Product Innovation & Commercialization Center, University of Georgia, Griffin, GA, USA
| | - Emma M Laing
- Department of Nutritional Sciences, University of Georgia, Athens, GA, USA
| | - Assaf Oshri
- Department of Human Development and Family Science, University of Georgia, Athens, GA, USA
| | - Alicia K Marand
- Department of Nutritional Sciences, University of Georgia, Athens, GA, USA
| | - Julia M Lance
- Department of Nutritional Sciences, University of Georgia, Athens, GA, USA
| | - Joseph M Kindler
- Department of Nutritional Sciences, University of Georgia, Athens, GA, USA
| | - Richard D Lewis
- Department of Nutritional Sciences, University of Georgia, Athens, GA, USA
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