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Environmental Factors That Affect Parathyroid Hormone and Calcitonin Levels. Int J Mol Sci 2021; 23:ijms23010044. [PMID: 35008468 PMCID: PMC8744774 DOI: 10.3390/ijms23010044] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/17/2021] [Accepted: 12/19/2021] [Indexed: 12/23/2022] Open
Abstract
Calciotropic hormones, parathyroid hormone (PTH) and calcitonin are involved in the regulation of bone mineral metabolism and maintenance of calcium and phosphate homeostasis in the body. Therefore, an understanding of environmental and genetic factors influencing PTH and calcitonin levels is crucial. Genetic factors are estimated to account for 60% of variations in PTH levels, while the genetic background of interindividual calcitonin variations has not yet been studied. In this review, we analyzed the literature discussing the influence of environmental factors (lifestyle factors and pollutants) on PTH and calcitonin levels. Among lifestyle factors, smoking, body mass index (BMI), diet, alcohol, and exercise were analyzed; among pollutants, heavy metals and chemicals were analyzed. Lifestyle factors that showed the clearest association with PTH levels were smoking, BMI, exercise, and micronutrients taken from the diet (vitamin D and calcium). Smoking, vitamin D, and calcium intake led to a decrease in PTH levels, while higher BMI and exercise led to an increase in PTH levels. In terms of pollutants, exposure to cadmium led to a decrease in PTH levels, while exposure to lead increased PTH levels. Several studies have investigated the effect of chemicals on PTH levels in humans. Compared to PTH studies, a smaller number of studies analyzed the influence of environmental factors on calcitonin levels, which gives great variability in results. Only a few studies have analyzed the influence of pollutants on calcitonin levels in humans. The lifestyle factor with the clearest relationship with calcitonin was smoking (smokers had increased calcitonin levels). Given the importance of PTH and calcitonin in maintaining calcium and phosphate homeostasis and bone mineral metabolism, additional studies on the influence of environmental factors that could affect PTH and calcitonin levels are crucial.
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Romero-Márquez JM, Varela-López A, Navarro-Hortal MD, Badillo-Carrasco A, Forbes-Hernández TY, Giampieri F, Domínguez I, Madrigal L, Battino M, Quiles JL. Molecular Interactions between Dietary Lipids and Bone Tissue during Aging. Int J Mol Sci 2021; 22:ijms22126473. [PMID: 34204176 PMCID: PMC8233828 DOI: 10.3390/ijms22126473] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/09/2021] [Accepted: 06/11/2021] [Indexed: 01/06/2023] Open
Abstract
Age-related bone disorders such as osteoporosis or osteoarthritis are a major public health problem due to the functional disability for millions of people worldwide. Furthermore, fractures are associated with a higher degree of morbidity and mortality in the long term, which generates greater financial and health costs. As the world population becomes older, the incidence of this type of disease increases and this effect seems notably greater in those countries that present a more westernized lifestyle. Thus, increased efforts are directed toward reducing risks that need to focus not only on the prevention of bone diseases, but also on the treatment of persons already afflicted. Evidence is accumulating that dietary lipids play an important role in bone health which results relevant to develop effective interventions for prevent bone diseases or alterations, especially in the elderly segment of the population. This review focuses on evidence about the effects of dietary lipids on bone health and describes possible mechanisms to explain how lipids act on bone metabolism during aging. Little work, however, has been accomplished in humans, so this is a challenge for future research.
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Affiliation(s)
- Jose M. Romero-Márquez
- Department of Physiology, Institute of Nutrition and Food Technology ‘‘José Mataix”, Biomedical Research Centre, University of Granada, Armilla, Avda. del Conocimiento s.n., 18100 Armilla, Spain; (J.M.R.-M.); (A.V.-L.); (M.D.N.-H.); (A.B.-C.)
| | - Alfonso Varela-López
- Department of Physiology, Institute of Nutrition and Food Technology ‘‘José Mataix”, Biomedical Research Centre, University of Granada, Armilla, Avda. del Conocimiento s.n., 18100 Armilla, Spain; (J.M.R.-M.); (A.V.-L.); (M.D.N.-H.); (A.B.-C.)
| | - María D. Navarro-Hortal
- Department of Physiology, Institute of Nutrition and Food Technology ‘‘José Mataix”, Biomedical Research Centre, University of Granada, Armilla, Avda. del Conocimiento s.n., 18100 Armilla, Spain; (J.M.R.-M.); (A.V.-L.); (M.D.N.-H.); (A.B.-C.)
| | - Alberto Badillo-Carrasco
- Department of Physiology, Institute of Nutrition and Food Technology ‘‘José Mataix”, Biomedical Research Centre, University of Granada, Armilla, Avda. del Conocimiento s.n., 18100 Armilla, Spain; (J.M.R.-M.); (A.V.-L.); (M.D.N.-H.); (A.B.-C.)
| | - Tamara Y. Forbes-Hernández
- Nutrition and Food Science Group, Department of Analytical and Food Chemistry, CITACA, CACTI, University of Vigo, 36310 Vigo, Spain;
| | - Francesca Giampieri
- Department of Clinical Sicences, Università Politecnica delle Marche, 60131 Ancona, Italy; (F.G.); (M.B.)
- Department of Biochemistry, Faculty of Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Irma Domínguez
- Research Group on Foods, Nutritional Biochemistry and Health, Universidad Europea del Atlántico, Isabel Torres 21, 39011 Santander, Spain;
- Universidad Internacional Iberoamericana, Calle 15 Num. 36, Entre 10 y 12 IMI III, Campeche 24560, Mexico;
| | - Lorena Madrigal
- Universidad Internacional Iberoamericana, Calle 15 Num. 36, Entre 10 y 12 IMI III, Campeche 24560, Mexico;
| | - Maurizio Battino
- Department of Clinical Sicences, Università Politecnica delle Marche, 60131 Ancona, Italy; (F.G.); (M.B.)
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China
| | - José L. Quiles
- Department of Physiology, Institute of Nutrition and Food Technology ‘‘José Mataix”, Biomedical Research Centre, University of Granada, Armilla, Avda. del Conocimiento s.n., 18100 Armilla, Spain; (J.M.R.-M.); (A.V.-L.); (M.D.N.-H.); (A.B.-C.)
- Research Group on Foods, Nutritional Biochemistry and Health, Universidad Europea del Atlántico, Isabel Torres 21, 39011 Santander, Spain;
- Correspondence:
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Abstract
Evidence is accumulating that dietary lipids play an important role in bone health. Most of the data supporting the effects of lipids on bones have been collected in young adult and/or developing animals. Based upon this work, mechanisms have been proposed to explain how lipids act to enhance or inhibit bone resorption and deposition. Little work, however, has been done in older models. Since osteoporosis primarily afflicts the elderly, such work is needed in order to determine if mechanisms relevant to the young differ in advanced age, and to develop effective interventions for this especially vulnerable segment of the population. This article reviews evidence that dietary lipids are important to bone health in older individuals, and describes possible mechanisms that may be of particular relevance to the elderly. Specifically, studies supporting the influence of dietary lipids on calcium excretion, growth hormone secretion, fatty acid metabolism, and osteoblast formation are reviewed.
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Affiliation(s)
- R L Corwin
- Department of Nutritional Sciences, The Pennsylvania State University, 126 S. Henderson, University Park, PA 16802, USA.
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Abstract
We studied plasma calcitonin gene-related peptide (CGRP) levels in obese women before (n = 24) and after (n = 13) weight loss, and in normal weight controls (n = 15). Furthermore, the influence of two isocaloric meals (high carbohydrate vs. high fat) on plasma CGRP concentrations was studied. The CGRP concentration in the obese group (32.26 +/- 2.01 pg/ml) was significantly (p less than 0.0001) higher than in the control group (21.64 +/- 0.15 pg/ml). After weight loss (14.3 +/- 0.72% of original weight) CGRP concentrations remained unchanged. Only the high-fat meal caused a significant (p less than 0.02) rise in CGRP levels. Our results indicate that elevated plasma CGRP levels may constitute a primary phenomenon in obese women, and that fat intake may be associated with increased CGRP secretion.
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Affiliation(s)
- P M Zelissen
- Department of Endocrinology, University Hospital, Utrecht, The Netherlands
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