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Gupta VK, Sahu L, Sonwal S, Suneetha A, Kim DH, Kim J, Verma HK, Pavitra E, Raju GSR, Bhaskar L, Lee HU, Huh YS. Advances in biomedical applications of vitamin D for VDR targeted management of obesity and cancer. Biomed Pharmacother 2024; 177:117001. [PMID: 38936194 DOI: 10.1016/j.biopha.2024.117001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 06/11/2024] [Accepted: 06/17/2024] [Indexed: 06/29/2024] Open
Abstract
BACKGROUND 1,25(OH)2D3 is a fat-soluble vitamin, involved in regulating Ca2+ homeostasis in the body. Its storage in adipose tissue depends on the fat content of the body. Obesity is the result of abnormal lipid deposition due to the prolonged positive energy balance and increases the risk of several cancer types. Furthermore, it has been associated with vitamin D deficiency and defined as a low 25(OH)2D3 blood level. In addition, 1,25(OH)2D3 plays vital roles in Ca2+-Pi and glucose metabolism in the adipocytes of obese individuals and regulates the expressions of adipogenesis-associated genes in mature adipocytes. SCOPE AND APPROACH The present contribution focused on the VDR mediated mechanisms interconnecting the obese condition and cancer proliferation due to 1,25(OH)2D3-deficiency in humans. This contribution also summarizes the identification and development of molecular targets for VDR-targeted drug discovery. KEY FINDINGS AND CONCLUSIONS Several studies have revealed that cancer development in a background of 1,25(OH)2D3 deficient obesity involves the VDR gene. Moreover, 1,25(OH)2D3 is also known to influence several cellular processes, including differentiation, proliferation, and adhesion. The multifaceted physiology of obesity has improved our understanding of the cancer therapeutic targets. However, currently available anti-cancer drugs are notorious for their side effects, which have raised safety issues. Thus, there is interest in developing 1,25(OH)2D3-based therapies without any side effects.
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Affiliation(s)
- Vivek Kumar Gupta
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea
| | - Lipina Sahu
- Department of Zoology, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh 495009, India
| | - Sonam Sonwal
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea
| | - Achanti Suneetha
- Department of Pharmaceutical Analysis, KVSR Siddhartha College of Pharmaceutical Sciences, Vijayawada, Andhra Pradesh 520010, India
| | - Dong Hyeon Kim
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea
| | - Jigyeong Kim
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea
| | - Henu Kumar Verma
- Department of Immunopathology, Institute of Lungs Health and Immunity, Comprehensive Pneumology Center, Helmholtz Zentrum, Neuherberg, Munich 85764, Germany
| | - Eluri Pavitra
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea
| | - Ganji Seeta Rama Raju
- Department of Energy and Materials Engineering, Dongguk University, Seoul 04620, Republic of Korea.
| | - Lvks Bhaskar
- Department of Zoology, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh 495009, India.
| | - Hyun Uk Lee
- Division of Material Analysis and Research, Korea Basic Science Institute, Daejeon 34133, Republic of Korea.
| | - Yun Suk Huh
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea.
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Pathmasiri W, Rushing BR, McRitchie S, Choudhari M, Du X, Smirnov A, Pelleigrini M, Thompson MJ, Sakaguchi CA, Nieman DC, Sumner SJ. Untargeted metabolomics reveal signatures of a healthy lifestyle. Sci Rep 2024; 14:13630. [PMID: 38871777 DOI: 10.1038/s41598-024-64561-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Accepted: 06/11/2024] [Indexed: 06/15/2024] Open
Abstract
This cross-sectional study investigated differences in the plasma metabolome in two groups of adults that were of similar age but varied markedly in body composition and dietary and physical activity patterns. Study participants included 52 adults in the lifestyle group (LIFE) (28 males, 24 females) and 52 in the control group (CON) (27 males, 25 females). The results using an extensive untargeted ultra high-performance liquid chromatography-high resolution mass spectrometry (UHPLC-HRMS) metabolomics analysis with 10,535 metabolite peaks identified 486 important metabolites (variable influence on projections scores of VIP ≥ 1) and 16 significantly enriched metabolic pathways that differentiated LIFE and CON groups. A novel metabolite signature of positive lifestyle habits emerged from this analysis highlighted by lower plasma levels of numerous bile acids, an amino acid profile characterized by higher histidine and lower glutamic acid, glutamine, β-alanine, phenylalanine, tyrosine, and proline, an elevated vitamin D status, higher levels of beneficial fatty acids and gut microbiome catabolism metabolites from plant substrates, and reduced levels of N-glycan degradation metabolites and environmental contaminants. This study established that the plasma metabolome is strongly associated with body composition and lifestyle habits. The robust lifestyle metabolite signature identified in this study is consistent with an improved life expectancy and a reduced risk for chronic disease.
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Affiliation(s)
- Wimal Pathmasiri
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
- Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, NC, 28081, USA
| | - Blake R Rushing
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
- Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, NC, 28081, USA
| | - Susan McRitchie
- Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, NC, 28081, USA
| | - Mansi Choudhari
- Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, NC, 28081, USA
| | - Xiuxia Du
- College of Computing and Informatics, University of North Carolina at Charlotte, Kannapolis, NC, 28081, USA
| | - Alexsandr Smirnov
- College of Computing and Informatics, University of North Carolina at Charlotte, Kannapolis, NC, 28081, USA
| | - Matteo Pelleigrini
- Department of Molecular, Cell, and Developmental Biology, University of California Los Angeles, Los Angeles, CA, USA
| | - Michael J Thompson
- Department of Molecular, Cell, and Developmental Biology, University of California Los Angeles, Los Angeles, CA, USA
| | - Camila A Sakaguchi
- Human Performance Laboratory, Department of Biology, Appalachian State University, North Carolina Research Campus, Kannapolis, NC, 28081, USA
| | - David C Nieman
- Human Performance Laboratory, Department of Biology, Appalachian State University, North Carolina Research Campus, Kannapolis, NC, 28081, USA.
| | - Susan J Sumner
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
- Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, NC, 28081, USA.
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da Silva TBP, Luiz MM, Delinocente MLB, Steptoe A, de Oliveira C, Alexandre TDS. Is Abdominal Obesity a Risk Factor for the Incidence of Vitamin D Insufficiency and Deficiency in Older Adults? Evidence from the ELSA Study. Nutrients 2022; 14:nu14194164. [PMID: 36235815 PMCID: PMC9572900 DOI: 10.3390/nu14194164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/29/2022] [Accepted: 10/05/2022] [Indexed: 11/06/2022] Open
Abstract
Cross-sectional studies have demonstrated an association between abdominal obesity, determined by waist circumference (WC), and vitamin D (25(OH)D) deficiency in older adults. However, longitudinal evidence is based only on general obesity determined using body mass index (BMI). We investigated whether abdominal obesity is associated with the incidence of 25(OH)D insufficiency (>30 and ≤50 nmol/L) and deficiency (≤30 nmol/L), and whether vitamin D supplementation modifies these associations. We included 2459 participants aged ≥50 years from the English Longitudinal Study of Ageing (ELSA) with 25(OH)D sufficiency (>50 nmol/L) at baseline. Abdominal obesity was defined as >88 cm for women and >102 cm for men. After 4 years, 25(OH)D concentrations were reassessed. Multinomial logistic regression models controlled by covariates were performed. Abdominal obesity increased the risk of the incidence of 25(OH)D insufficiency (RRR = 1.36; 95% CI: 1.01−1.83) and deficiency (RRR = 1.64; 95% CI: 1.05−2.58). These risks were maintained when excluding individuals who took vitamin D supplementation (RRR = 1.38; 95% CI: 1.02−1.88) and (RRR = 1.62; 95% CI: 1.02−2.56). Abdominal obesity is associated with the risk of incidence of low 25(OH)D concentrations. WC seems to be an adequate tool for screening individuals with obesity and at potential risk of developing these conditions.
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Affiliation(s)
- Thaís Barros Pereira da Silva
- Department of Gerontology, Federal University of São Carlos, Rodovia Washington Luís, Km 235, SP-310, São Carlos 13565-905, São Paulo, Brazil
| | - Mariane Marques Luiz
- Postgraduate Program in Physical Therapy, Federal University of São Carlos, Rodovia Washington Luís, Km 235, SP-310, São Carlos 13565-905, São Paulo, Brazil
| | - Maicon Luís Bicigo Delinocente
- Postgraduate Program in Gerontology, Federal University of São Carlos, Rodovia Washington Luís, Km 235, SP-310, São Carlos 13565-905, São Paulo, Brazil
| | - Andrew Steptoe
- Department of Epidemiology and Public Health, University College London, Gower Street, London WC1E 6BT, UK
| | - Cesar de Oliveira
- Department of Epidemiology and Public Health, University College London, Gower Street, London WC1E 6BT, UK
| | - Tiago da Silva Alexandre
- Department of Gerontology, Federal University of São Carlos, Rodovia Washington Luís, Km 235, SP-310, São Carlos 13565-905, São Paulo, Brazil
- Postgraduate Program in Physical Therapy, Federal University of São Carlos, Rodovia Washington Luís, Km 235, SP-310, São Carlos 13565-905, São Paulo, Brazil
- Postgraduate Program in Gerontology, Federal University of São Carlos, Rodovia Washington Luís, Km 235, SP-310, São Carlos 13565-905, São Paulo, Brazil
- Department of Epidemiology and Public Health, University College London, Gower Street, London WC1E 6BT, UK
- Correspondence: or ; Tel.: +55-16-3306-6671
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Camajani E, Feraco A, Proietti S, Basciani S, Barrea L, Armani A, Lombardo M, Gnessi L, Caprio M. Very low calorie ketogenic diet combined with physical interval training for preserving muscle mass during weight loss in sarcopenic obesity: A pilot study. Front Nutr 2022; 9:955024. [PMID: 36245515 PMCID: PMC9560671 DOI: 10.3389/fnut.2022.955024] [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: 05/27/2022] [Accepted: 09/14/2022] [Indexed: 11/13/2022] Open
Abstract
Background The prevalence of sarcopenic obesity (SO) is increasing worldwide, posing important challenges to public health and national health care system, especially during the COVID pandemic. In subjects with SO, it is essential to reduce body weight, and to preserve lean mass, to avoid worsening of muscle function. Adequate nutrition and correct physical activity is essential to counteract SO progression. Very Low Calorie Ketogenic Diet (VLCKD), a well-established nutritional intervention for obesity, has been also indicated for the treatment of SO. To date, the effects of physical training during VLCKD have not been investigated. Aim This pilot study aims to determine the efficacy of VLCKD combined with interval training, compared to a VLCKD alone, on weight-loss, body composition, and physical performance in participants with SO. Materials and methods Twenty-four participants with SO, aged between 50 and 70 years, who met the inclusion criteria, accepted to adhere to a VLCKD (<800 Kcal/die) and to give informed consent, were enrolled in the study. Twelve participants followed a structured VLCKD protocol (VLCKD group) and twelve followed the same VLCKD protocol combined with interval training (IT), twice per week (VLCKD + IT group). Data were collected at baseline (T0) and after 6-week of treatment (T6). Anthropometric indexes, body composition analysis by Bioelectrical Impedance Analysis (BIA), muscle strength and physical performance analysis were assessed at baseline and at the end of treatment. Results At the end of the study, body mass index (BMI), body weight, waist circumference, and hip circumference were significantly reduced in both VLCKD group and VLCKD + IT group. Interestingly, a significant improvement in muscle strength and physical performance was observed in both groups. A multiple comparison of delta variations in all parameters between groups was performed. No differences were observed for the majority of anthropometric and biochemical parameters, with the exception of fat free mass (FFM) and fat mass (FM): notably, participants who followed a VLCKD combined with IT preserved FFM (p < 0.001) and reduced FM (p = 0.001) to a greater extent than what observed in VLCKD group. Moreover, high density lipoprotein (HDL) cholesterol plasma levels were significantly higher in the VLCKD + IT group compared to the VLCKD group. Conclusion This pilot study confirms that VLCKD is effective in terms of body weight reduction, particularly FM; moreover, the combination of VLCKD and interval training could determine a better preservation of FFM.
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Affiliation(s)
- Elisabetta Camajani
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, Rome, Italy
| | - Alessandra Feraco
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, Rome, Italy
- Laboratory of Cardiovascular Endocrinology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele, Rome, Italy
| | - Stefania Proietti
- Unit of Clinical and Molecular Epidemiology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele, Rome, Italy
| | - Sabrina Basciani
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Luigi Barrea
- Dipartimento di Scienze Umanistiche, Università Telematica Pegaso, Naples, Italy
- Department of Clinical Medicine and Surgery, Endocrinology Unit, Centro Italiano per la cura e il Benessere del Paziente con Obesità, University Medical School of Naples, Naples, Italy
| | - Andrea Armani
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, Rome, Italy
- Laboratory of Cardiovascular Endocrinology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele, Rome, Italy
| | - Mauro Lombardo
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, Rome, Italy
| | - Lucio Gnessi
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Massimiliano Caprio
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, Rome, Italy
- Laboratory of Cardiovascular Endocrinology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele, Rome, Italy
- *Correspondence: Massimiliano Caprio,
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Rahimpour Z, Hoseini R, Behpour N. Alterations of liver enzymes and lipid profile in response to exhaustive eccentric exercise: vitamin D supplementation trial in overweight females with non-alcoholic fatty liver disease. BMC Gastroenterol 2022; 22:372. [PMID: 35927637 PMCID: PMC9354270 DOI: 10.1186/s12876-022-02457-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/31/2022] [Indexed: 11/10/2022] Open
Abstract
Background Eccentric exhaustive exercise (EEE) training has been known as a promising training modality to enhance performance and stimulate adaptation in healthy individuals or patients that might also cause abnormal liver enzymes and lipid profiles. Vitamin D (Vit D) supplementation is believed to improve the condition of Non-Alcoholic Fatty Liver Disease (NAFLD) patients. However, there is limited evidence on the effect of Vit D supplementation on the EEE-induced alterations. This study aimed to investigate the effect of short-term supplementation of Vit D on the liver enzymes and lipid profile alterations following EEE in overweight women with NAFLD. Methods In this clinical trial, 22 overweight women with NAFLD were randomly divided into experimental and control (n = 11 in each). The experimental group consumed 2000 IU of Vit D per day for six weeks; the control group consumed a lactose placebo daily with the same color, shape, and warmth percentage. Two treadmill EEE sessions were performed before and after the six-week Vit D supplementation. Blood was taken from the antecubital vein to measure the liver enzymes, lipid profile, and Vit D at four stages: Pre 1(before the first EEE session), Post 1(after the first EEE session), Pre 2 (before the second EEE session), and Post 2 (after the second EEE session). Results The results indicate that Vit D supplementation significantly reduced Bodyweight (BW; P = 0.047), Body Mass Index (BMI; P = 0.044), Body Fat Percentage (BFP; P = 0.001), and Waist Hip Ratio (WHR; P = 0.001) in the experimental group. Additionally, the results showed increased liver enzymes (ALT, AST, and GGT) and lipid profile (TC, TG, and LDL) following EEE. While the HDL levels decreased significantly after EEE. Compared with control, the results of the independent t-test showed significantly lower ALT (P = 0.001; P = 0.001), AST (P = 0.001; P = 0.001), and GGT (P = 0.001; P = 0.001); while significantly higher Vit D (P = 0.001, P = 0.001) in the experimental in both Pre 2 and Post 2; receptively. Also, significantly lower TC (P = 0.001; P = 0.001), TG (P = 0.048; P = 0.001), and LDL (P = 0.001; P = 0.001); while significantly higher HDL (P = 0.001, P = 0.001) were observed in the experimental group compared to the control in both Pre 2 and Post 2; receptively. Conclusions Vit D supplementation reduces the liver enzymes and improves lipid profile alterations following EEE in overweight women with NAFLD. Thus, Vit D supplementation can be considered a functional supplement to improve the EEE-induced alteration. Trial registration: The trial was in the Iranian Clinical Trial Registration Center under the (IRCT20201130049538N1) on 05/07/2021.
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Affiliation(s)
- Zahra Rahimpour
- Department of Exercise Physiology, Faculty of Sport Sciences, Razi University, Kermanshah, Iran
| | - Rastegar Hoseini
- Department of Exercise Physiology, Faculty of Sport Sciences, Razi University, Kermanshah, Iran.
| | - Nasser Behpour
- Department of Exercise Physiology, Faculty of Sport Sciences, Razi University, Kermanshah, Iran
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Vitamin D levels in a population from Argentina with metabolic disorders. Porto Biomed J 2022; 7:e159. [PMID: 35801218 PMCID: PMC9257297 DOI: 10.1097/j.pbj.0000000000000159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/23/2021] [Accepted: 04/29/2021] [Indexed: 11/03/2022] Open
Abstract
Metabolic disorders are a public health problem worldwide. The vitamin D status in patients with metabolic diseases is not a routine procedure. The aim of this study was to determine the prevalence of vitamin D deficiency and examine the correlation between vitamin D status and cardiometabolic parameters in Latin American population with metabolic disorders.
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Vitamin D Deficiency Is Inversely Associated with Homeostatic Model Assessment of Insulin Resistance. Nutrients 2021; 13:nu13124358. [PMID: 34959910 PMCID: PMC8705502 DOI: 10.3390/nu13124358] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 11/24/2021] [Accepted: 11/25/2021] [Indexed: 01/08/2023] Open
Abstract
The study was conducted to comprehensively assess the association of the concentration of vitamin D in the blood and insulin resistance in non-diabetic subjects. The objective was to pool the results from all observational studies from the beginning of 1980 to August 2021. PubMed, Medline and Embase were systematically searched for the observational studies. Filters were used for more focused results. A total of 2248 articles were found after raw search which were narrowed down to 32 articles by the systematic selection of related articles. Homeostatic Model Assessment of Insulin Resistance (HOMAIR) was used as the measure of insulin resistance and correlation coefficient was used as a measure of the relationship between vitamin D levels and the insulin resistance. Risk of bias tables and summary plots were built using Revman software version 5.3 while Comprehensive meta-analysis version 3 was used for the construction of forest plot. The results showed an inverse association between the status of vitamin D and insulin resistance (r = -0.217; 95% CI = -0.161 to -0.272; p = 0.000). A supplement of vitamin D can help reduce the risk of insulin resistance; however further studies, like randomized controlled trials are needed to confirm the results.
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Wiciński M, Ozorowski M, Wódkiewicz E, Otto SW, Kubiak K, Malinowski B. Impact of Vitamin D Supplementation on Inflammatory Markers' Levels in Obese Patients. Curr Issues Mol Biol 2021; 43:1606-1622. [PMID: 34698104 PMCID: PMC8929128 DOI: 10.3390/cimb43030114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 11/18/2022] Open
Abstract
In view of research suggesting a possible beneficial impact of vitamin D on systemic inflammatory response, the authors decided to investigate an influence of vitamin D supplementation on serum levels of certain inflammatory markers in obese patients. The current study included such biomarkers as interleukin-6 (IL-6), pituitary adenylate cyclase-activating peptide (PACAP), advanced oxidation protein products (AOPP), C-X3-C Motif Chemokine Ligand 1 (CX3CL1), monocyte chemoattractant protein-1 (MCP-1), and nitric oxide (NO). The measurements were performed with the ELISA method before and after 3-month-long supplementation of 2000 IU of vitamin D orally. The results showed that the therapy did not induce any statistically significant changes in serum levels of MCP-1, IL-6, CX3CL1, and PACAP. The supplementation was related to a significant increase in measurements of NO and AOPP levels, although the correlation analysis between vitamin D concentration after its supplementation and the concentration of the molecular parameters did not show significant relation. In conclusion, our study seems to contradict certain aspects of findings available in the literature regarding the vitamin D's impact.
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Affiliation(s)
- Michał Wiciński
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland; (M.W.); (M.O.); (B.M.)
| | - Mateusz Ozorowski
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland; (M.W.); (M.O.); (B.M.)
| | - Eryk Wódkiewicz
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland; (M.W.); (M.O.); (B.M.)
| | | | - Karol Kubiak
- Department of Obstetrics and Gynecology, St. Franziskus-Hospital, 48145 Münster, Germany;
| | - Bartosz Malinowski
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie 9, 85-090 Bydgoszcz, Poland; (M.W.); (M.O.); (B.M.)
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He Y, Yang X, Li M, Zhang A, Sun N. Vitamin D supplementation and energy and metabolic homoeostasis in obese and overweight subjects: a protocol for a systematic review. BMJ Open 2021; 11:e051230. [PMID: 34593501 PMCID: PMC8487182 DOI: 10.1136/bmjopen-2021-051230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
INTRODUCTION Obesity and vitamin D deficiency are major public health problems. According to the pathophysiological mechanism of obesity as well as the bidirectional relationship between obesity and vitamin D metabolism and storage, vitamin D supplementation in obese and overweight subjects could have beneficial effects on the energy and metabolic homoeostasis. This review will assess the efficacy of vitamin D supplementation on the energy and metabolic homoeostasis in overweight and obese subjects. METHODS AND ANALYSIS In accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols, we retrieved the relevant literature from the following electronic bibliographic databases: MEDLINE/PubMed, EMBASE and the Cochrane Central Register of Controlled Trials, from inception to June 2021. A manual search of the reference lists of all the relevant research articles will be performed to identify additional studies. We will include randomised controlled trials (RCTs) published in English that examine the effects of vitamin D supplementation on energy and metabolic homoeostasis in overweight and obese subjects. RCTs with multiple vitamin D groups will also be included. Two reviewers will independently complete the article selection, data extraction and rating. The bias tool from the Cochrane Handbook for Systematic Reviews of Interventions was used to assess the methodological quality of the included studies. A narrative or quantitative synthesis will be performed based on the available data. The planned start and end dates for the study were 1 February 2021 and 1 March 2022. ETHICS AND DISSEMINATION Ethical approval will not be required for this review. The results of this review will be disseminated in a peer-reviewed journal. PROSPERO REGISTRATION NUMBER CRD42021228981.
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Affiliation(s)
- Yu He
- Department of Rehabilitation, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xiao Yang
- Department of Rehabilitation, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Min Li
- Department of Rehabilitation, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Anren Zhang
- Department of Rehabilitation, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Nianyi Sun
- Department of Rehabilitation, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
- Department of Rehabilitation, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, China
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Bima AI, Mahdi AS, Al Fayez FF, Khawaja TM, Abo El-Khair SM, Elsamanoudy AZ. Cellular Senescence and Vitamin D Deficiency Play a Role in the Pathogenesis of Obesity-Associated Subclinical Atherosclerosis: Study of the Potential Protective Role of Vitamin D Supplementation. Cells 2021; 10:920. [PMID: 33923622 PMCID: PMC8073712 DOI: 10.3390/cells10040920] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/13/2021] [Accepted: 04/14/2021] [Indexed: 12/18/2022] Open
Abstract
The exact link between obesity, vitamin D deficiency, and their relation to cellular senescence in the pathogenesis of subclinical atherosclerosis is still under debate. Therefore, the current study aims to verify the possible role of vitamin D deficiency and cellular senescence in the pathogenesis of obesity-related subclinical atherosclerosis. Moreover, it aims to investigate the possible protective role of vitamin D supplementation. Fifty-seven male albino rats were enrolled in the study and classified into four groups: negative (10) and positive control groups (10), an obese model group (24), and a vitamin-D-supplemented obese group (13). Aortic tissue samples and fasting blood samples were collected. The following biochemical investigations were performed: serum cholesterol, triglycerides, HDL-C, LDL-C, ALT, AST, CPK, CK-MB, and hs-cTnt. HOMA-IR was calculated. Moreover, serum SMP-30, 25 (OH)Vitamin D3, and eNOS were determined by the ELISA technique. Aortic gene expression of eNOS, SMP-30, and P53 was estimated by real-time qRT-PCR. Serum 25(OH) D3 and SMP-30 were lower in the obese group. In addition, the obese group showed higher serum lipid profile, HOMA-IR, eNOS, ALT, AST, CPK, CK-MB, and hs-cTnt than the control groups, while decreased levels were found in the vitamin-D-treated obese group. Gene expression of eNOS and SMP-30 were in accordance with their serum levels. A positive correlation was found between vitamin D level and SMP-30. In conclusion, obesity is associated with vitamin D deficiency and enhanced cellular senescence. They could play a role in the pathogenesis of obesity-associated subclinical atherosclerosis and endothelial dysfunction. Vitamin D supplements could play a protective role against such obesity-related comorbidity.
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Affiliation(s)
- Abdulhadi I. Bima
- Department of Clinical Biochemistry, Faculty of Medicine, King Abdulaziz University, Jeddah 21465, Saudi Arabia; (A.I.B.); (A.S.M.); (F.F.A.F.); tagreed2009-@hotmail.com (T.M.K.)
| | - Abdullah S. Mahdi
- Department of Clinical Biochemistry, Faculty of Medicine, King Abdulaziz University, Jeddah 21465, Saudi Arabia; (A.I.B.); (A.S.M.); (F.F.A.F.); tagreed2009-@hotmail.com (T.M.K.)
| | - Fayza F. Al Fayez
- Department of Clinical Biochemistry, Faculty of Medicine, King Abdulaziz University, Jeddah 21465, Saudi Arabia; (A.I.B.); (A.S.M.); (F.F.A.F.); tagreed2009-@hotmail.com (T.M.K.)
| | - Taghreed M. Khawaja
- Department of Clinical Biochemistry, Faculty of Medicine, King Abdulaziz University, Jeddah 21465, Saudi Arabia; (A.I.B.); (A.S.M.); (F.F.A.F.); tagreed2009-@hotmail.com (T.M.K.)
| | - Salwa M. Abo El-Khair
- Medical Biochemistry and Molecular Biology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt;
| | - Ayman Z. Elsamanoudy
- Department of Clinical Biochemistry, Faculty of Medicine, King Abdulaziz University, Jeddah 21465, Saudi Arabia; (A.I.B.); (A.S.M.); (F.F.A.F.); tagreed2009-@hotmail.com (T.M.K.)
- Medical Biochemistry and Molecular Biology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt;
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11
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Pessoa Mamede LDCG, de Lima RLFC, Silva AS, Rodrigues Pita JCL, Galdino Gomes NI, de Sena EA, Moraes Nobrega RP, Scarano Alcântara JO, Fontes de Souza JH, Cardoso GA, de Brito Alves JL, Rodrigues Gonçalves MDC. Effects of a Single Oral Megadose of Vitamin D3 on Inflammation and Oxidative Stress Markers in Overweight and Obese Women: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial. Diabetes Metab Syndr Obes 2021; 14:525-534. [PMID: 33574687 PMCID: PMC7871878 DOI: 10.2147/dmso.s285597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 11/30/2020] [Indexed: 11/23/2022] Open
Abstract
AIM The study aimed to evaluate the effects of vitamin D3 (VD3) supplementation on inflammation and oxidative stress markers in overweight and obese women with deficiency or insufficiency of vitamin D. METHODS Twenty-nine overweight or obese women who had a deficiency or insufficiency of vitamin D were placed into two groups according to VD3 intervention. Patients in the supplemented group received a single oral megadose of VD3 (VD3, n=14). Patients in placebo group received a single oral identical capsule without vitamin D (placebo, n = 15). Anthropometric and biochemical variables were assessed at baseline and after 4-weeks intervention. RESULTS Anthropometric variables (waist circumference, waist-hip ratio, waist-height ratio and body mass index) were similar between groups (p > 0.05). VD3 supplementation increased the serum levels of 25-hydroxyvitamin D (p=0.000), malondialdehyde (p=0.021) and C-reactive protein (p=0.043) in overweight and obese women. Additionally, VD3 supplementation reduced the serum levels of aspartate aminotransferase (AST, p=0.035), alanine aminotransferase (ALT, p<0.0001) in overweight and obese women. Despite this, the serum levels of parathyroid hormone (PTH), fasting glucose (FG), and alpha-1- acid glycoprotein (A1GPA), total antioxidant capacity (TAC) were similar between groups. CONCLUSION In summary, a single oral megadose of VD3 increased 25-hydroxyvitamin D serum levels but did not improve oxidative stress and inflammation markers.
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Affiliation(s)
| | | | - Alexandre Sérgio Silva
- Post-Graduate Program in Nutrition Sciences, Health Sciences Center, Federal University of Paraíba, João Pessoa, Brazil
| | | | | | - Elisama Araújo de Sena
- Post-Graduate Program in Nutrition Sciences, Health Sciences Center, Federal University of Paraíba, João Pessoa, Brazil
| | | | | | | | | | - José Luiz de Brito Alves
- Post-Graduate Program in Nutrition Sciences, Health Sciences Center, Federal University of Paraíba, João Pessoa, Brazil
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Hajipoor S, Hekmatdoost A, Rezaei M, Nachvak SM, Alipour M, Eskandari S, Mostafai R, Sobhiyeh MR, Mohammadi R, Pasdar Y. The effect of yogurt co-fortified with probiotic and vitamin D on lipid profile, anthropometric indices and serum 25-hydroxi vitamin D in obese adult: A Double-Blind Randomized- Controlled Trial. Food Sci Nutr 2021; 9:303-312. [PMID: 33473294 PMCID: PMC7802538 DOI: 10.1002/fsn3.1996] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/19/2020] [Accepted: 10/20/2020] [Indexed: 12/15/2022] Open
Abstract
Vitamin D deficiency can be regarded as one of the overgrowing health problem in all of the world. Evidence from a clinical trial suggested a role for probiotic bacteria in increasing vitamin D. However, probiotic's effect is strain specific and this effect should be confirmed about different strains. The objective was to determine if yogurt fortification with probiotic bacteria, Lactobillus acidophilus La-B5, Bifidobacterium lactis Bb-12 either alone or in combination with vitamin D can be a complementary treatment for vitamin D deficiency. The end-points were vitamin D, cardio metabolic lipid profile, anthropometric indices (weight, height, waist, hip, fat mass, lean body mass) and dietary intake. A 10-week parallel-group, double-blind, randomized and controlled trial was conducted on 140 obese men and women. The participants were randomly allocated to receive 100 grams either 1) plain low-fat yogurt or 2) probiotic yogurt or 3) vitamin D-fortified yogurt or 4) probiotic and vitamin D cofortified yogurt. All groups received low-calorie diet. Vitamin D increased significantly in group 4 (p = .008), group 3 (p = .001) and group 1 (p = .012 with no difference between groups. Vitamin D-fortified yogurt had the most effect size and showed a significant difference versus plain (p = .018) and probiotic yogurt (p = .002). Regarding lipid profile, there were no significant differences between groups. Data from this study does not support the hypothesis that yogurt fortified with probiotic bacteria, Lactobillus acidophilus La-5 and Bifidobacterium lactis Bb-12 either alone or in combination with vitamin D might impose any increasing effect on serum level of vitamin D in comparison with vitamin D-fortified yogurt.
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Affiliation(s)
- Shima Hajipoor
- Nutritional Sciences DepartmentSchool of Nutritional Sciences and Food TechnologyKermanshah University of Medical SciencesKermanshahIran
| | - Azita Hekmatdoost
- Department of Clinical NutritionSchool of Nutrition Sciences & Food TechnologyShahid Beheshti University of Medical SciencesTehranIran
| | - Mansour Rezaei
- Department of BiostatisticsSchool of Health, Social Development and Health Promotion Research CenterResearch Institute for Health, Kermanshah University of Medical ScienceKermanshahIran
| | - Seyed Mostafa Nachvak
- Nutritional Sciences DepartmentSchool of Nutritional Sciences and Food TechnologyKermanshah University of Medical SciencesKermanshahIran
| | - Meysam Alipour
- Alimentary Tract Research Center, Ahvaz Jundishapur University of Medical SciencesAhvazIran
| | - Sodabeh Eskandari
- Department of BiostatisticsSchool of Health, Social Development and Health Promotion Research CenterResearch Institute for Health, Kermanshah University of Medical ScienceKermanshahIran
| | - Roghayeh Mostafai
- Nutritional Sciences DepartmentSchool of Nutritional Sciences and Food TechnologyKermanshah University of Medical SciencesKermanshahIran
| | - Mohammad Reza Sobhiyeh
- Vascular and Endovascular Surgeon, Department of Surgery, Imam Reza HospitalKermanshah University of Medical SciencesKermanshahIran
| | - Reza Mohammadi
- Department of Food Science and TechnologySchool of Nutrition Sciences and Food TechnologyKermanshah University of Medical SciencesKermanshahIran
| | - Yahya Pasdar
- Nutritional Sciences DepartmentSchool of Nutritional Sciences and Food TechnologyKermanshah University of Medical SciencesKermanshahIran
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13
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Og G, M C, Pv J, I T, A R. Associations of physical activity with vitamin D status depends on obesity status in old adults. Clin Nutr ESPEN 2020; 39:222-226. [PMID: 32859321 DOI: 10.1016/j.clnesp.2020.06.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 05/14/2020] [Accepted: 06/10/2020] [Indexed: 01/02/2023]
Abstract
PURPOSE Obesity has been associated with low 25-hydroxy-vitamin D (25OHD). The causes of hypovitaminosis D in obese individuals are not known. The present work aimed to investigate 25OHD in obese and normal-/overweight subjects with consideration of leisure-time physical activity (LTPA). METHODS Community-dwelling old adults (N = 229, 73.7 ± 5.7yrs, 58.2% female) from the Reykjavik capital area in Iceland participated in this cross-sectional study. LTPA, vitamin D intake, body composition and background variables were assessed. 25OHD was measured in fasting blood samples. RESULTS Mean LTPA was 5.7 ± 5.6 h/week and the common activities were walking and gardening. Mean 25OHD was 66.7 ± 28.1 nmol/L and 8.5/21.2% were below 30 and 50 nmol/L, respectively. Obese participants (n = 84) had lower 25OHD (-11.0 ± 3.8 nmol/L,P < 0.001) and lower LTPA (-2.5 + 0.8 h/week,P = 0.001) than normal-/overweight subjects (n = 145). Linear models showed that LTPA (h/week) was associated with higher 25OHD in normal-/overweight participants only (1.3 nmol/L, P < 0.001) but not in obese (-0.7 nmol, P = 0.245). Fish oil intake was associated with higher 25OHD both in normal-/overweight (19.2 ± 4.5 nmol/L, P = 0.001) and obese subjects (13.4 ± 5.3 nmol/L, P = 0.013). CONCLUSIONS Obese community-dwelling old adults in Iceland have lower 25OHD than their normal-/overweight counterparts. LTPA was associated with a higher 25OHD in normal-/overweight, but not in obese participants. However, fish oil was associated with higher 25OHD independently from obesity status. Thus, vitamin D supplementation is important for obese old adults to maintain vitamin D levels.
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Affiliation(s)
- Geirsdottir Og
- The Icelandic Gerontological Research Center, Reykjavik, Iceland; Faculty of Food Science and Nutrition, University of Iceland, Reykjavik, Iceland
| | - Chang M
- The Icelandic Gerontological Research Center, Reykjavik, Iceland; Sport Science, School of Science and Engineering, Reykjavik University, Reykjavik, Iceland
| | - Jonsson Pv
- The Icelandic Gerontological Research Center, Reykjavik, Iceland; Department of Geriatrics, National University Hospital of Iceland, Reykjavik, Iceland
| | - Thorsdottir I
- School of Health Sciences, University of Iceland, Reykjavik, Iceland
| | - Ramel A
- The Icelandic Gerontological Research Center, Reykjavik, Iceland; Faculty of Food Science and Nutrition, University of Iceland, Reykjavik, Iceland.
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14
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Co-treatment with Vitamin D Supplementation and Aerobic Training in Elderly Women with Vit D Deficiency and NAFLD: A Single-blind Controlled Trial. HEPATITIS MONTHLY 2020. [DOI: 10.5812/hepatmon.96437] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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15
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Obesity and 25(OH)D Serum Concentration Are More Important than Vitamin D Intake for Changes in Nutritional Status Indicators: A Population-Based Longitudinal Study in a State Capital City in Southern Brazil. Nutrients 2019; 11:nu11102366. [PMID: 31590272 PMCID: PMC6835919 DOI: 10.3390/nu11102366] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/01/2019] [Accepted: 07/10/2019] [Indexed: 01/10/2023] Open
Abstract
Our objective was to investigate the relationship between dietary vitamin D intake and serum concentration of vitamin D (25(OH)D) on changes in body weight, waist circumference (WC), and body mass index (BMI), and to determine if this relationship changes between obese and non-obese individuals at baseline and those who have or do not have 25(OH)D deficiency. This was a prospective study with a sample of 572 individuals aged 25–65 years, who were participants in the cohort study EpiFloripa Adults. Changes in weight (in kg), BMI, and WC between 2012 and 2014 were evaluated as outcomes. The main exposure was the dietary intake of vitamin D (2012), and the 25(OH)D serum concentration was secondary. When the analyses were stratified by the presence of obesity in the baseline, among obese individuals it was observed that those in the extreme categories of vitamin D intake had an average gain of 3.0 kg in weight, 0.9 kg/m2 in BMI, and 1.7–2.7 cm in WC. When 25(OH)D serum concentration were incorporated into the analyses, it was observed that non-obese subjects not having 25(OH)D deficiency had a mean reduction of 2.3 cm in WC. In conclusion, the increases in body weight, BMI, and WC were higher over time in obese patients with deficient 25(OH)D serum concentration, regardless of dietary vitamin D intake.
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16
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Vranić L, Mikolašević I, Milić S. Vitamin D Deficiency: Consequence or Cause of Obesity? ACTA ACUST UNITED AC 2019; 55:medicina55090541. [PMID: 31466220 PMCID: PMC6780345 DOI: 10.3390/medicina55090541] [Citation(s) in RCA: 159] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 08/13/2019] [Accepted: 08/22/2019] [Indexed: 02/06/2023]
Abstract
Obesity is defined as an excess amount of body fat and represents a significant health problem worldwide. High prevalence of vitamin D (VD) deficiency in obese subjects is a well-documented finding, most probably due to volumetric dilution into the greater volumes of fat, serum, liver, and muscle, even though other mechanisms could not completely be excluded, as they may contribute concurrently. Low VD could not yet be excluded as a cause of obesity, due to its still incompletely explored effects through VD receptors found in adipose tissue (AT). VD deficiency in obese people does not seem to have consequences for bone tissue, but may affect other organs, even though studies have shown inconsistent results and VD supplementation has not yet been clearly shown to benefit the dysmetabolic state. Hence, more studies are needed to determine the actual role of VD deficiency in development of those disorders. Thus, targeting lifestyle through healthy diet and exercise should be the first treatment option that will affect both obesity-related dysmetabolic state and vitamin D deficiency, killing two birds with one stone. However, VD supplementation remains a treatment option in individuals with residual VD deficiency after weight loss.
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Affiliation(s)
- Luka Vranić
- Department of Gastroenterology and Hepatology, University Hospital Centre Rijeka, School of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Ivana Mikolašević
- Department of Gastroenterology and Hepatology, University Hospital Centre Rijeka, School of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Sandra Milić
- Department of Gastroenterology and Hepatology, University Hospital Centre Rijeka, School of Medicine, University of Rijeka, 51000 Rijeka, Croatia.
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Abstract
Bariatric surgeries are considered the only effective way of weight loss therapy in morbidly obese patients, i.e. body mass index ≥ 35. However, micronutrient deficiencies and malnutrition are common after most bariatric procedures and thus, pre- and postoperative nutritional assessment and corrections are advised. The present review is presented in an effort to describe in some detail about prevalence, and mechanisms of macro- and micronutrient deficiencies in obese and post-bariatric surgery individuals. We also aimed to summarize the data on screening and supplementation of macro- and micronutrients before and after bariatric surgeries.
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Affiliation(s)
- Sonmoon Mohapatra
- Department of Gastroenterology and Hepatology, Saint Peter's University Hospital - Rutgers Robert Wood Johnson School of Medicine, New Brunswick, NJ, United States
| | - Keerthana Gangadharan
- Department of Internal Medicine, Saint Peter's University Hospital - Rutgers Robert Wood, Johnson School of Medicine, New Brunswick, NJ, United States
| | - Capecomorin S Pitchumoni
- Department of Gastroenterology, Hepatology and Clinical Nutrition, Saint Peter's University Hospital - Rutgers Robert Wood Johnson School of Medicine, New Brunswick, NJ, United States.
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18
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Einarsdottir E, Pekkinen M, Krjutškov K, Katayama S, Kere J, Mäkitie O, Viljakainen H. A preliminary transcriptome analysis suggests a transitory effect of vitamin D on mitochondrial function in obese young Finnish subjects. Endocr Connect 2019; 8:559-570. [PMID: 30965285 PMCID: PMC6499919 DOI: 10.1530/ec-18-0537] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 04/09/2019] [Indexed: 12/14/2022]
Abstract
OBJECTIVE The effect of vitamin D at the transcriptome level is poorly understood, and furthermore, it is unclear if it differs between obese and normal-weight subjects. The objective of the study was to explore the transcriptome effects of vitamin D supplementation. DESIGN AND METHODS We analysed peripheral blood gene expression using GlobinLock oligonucleotides followed by RNA sequencing in individuals participating in a 12-week randomised double-blinded placebo-controlled vitamin D intervention study. The study involved 18 obese and 18 normal-weight subjects (of which 20 males) with mean (±s.d.) age 20.4 (±2.5) years and BMIs 36 (±10) and 23 (±4) kg/m2, respectively. The supplemental daily vitamin D dose was 50 µg (2000 IU). Data were available at baseline, 6- and 12-week time points and comparisons were performed between the vitamin D and placebo groups separately in obese and normal-weight subjects. RESULTS Significant transcriptomic changes were observed at 6 weeks, and only in the obese subjects: 1724 genes were significantly upregulated and 186 genes were downregulated in the vitamin D group compared with placebo. Further analyses showed several enriched gene categories connected to mitochondrial function and metabolism, and the most significantly enriched pathway was related to oxidative phosphorylation (adjusted P value 3.08 × 10-14). Taken together, our data suggest an effect of vitamin D supplementation on mitochondrial function in obese subjects. CONCLUSIONS Vitamin D supplementation affects gene expression in obese, but not in normal-weight subjects. The altered genes are enriched in pathways related to mitochondrial function. The present study increases the understanding of the effects of vitamin D at the transcriptome level.
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Affiliation(s)
- Elisabet Einarsdottir
- Folkhälsan Institute of Genetics, University of Helsinki, Helsinki, Finland
- Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Minna Pekkinen
- Folkhälsan Institute of Genetics, University of Helsinki, Helsinki, Finland
- Children’s Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Kaarel Krjutškov
- Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland
- Competence Centre on Health Technologies, Tartu, Estonia
| | - Shintaro Katayama
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Juha Kere
- Folkhälsan Institute of Genetics, University of Helsinki, Helsinki, Finland
- Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
- School of Basic and Medical Biosciences, King’s College London, Guy’s Hospital, London, United Kingdom
| | - Outi Mäkitie
- Folkhälsan Institute of Genetics, University of Helsinki, Helsinki, Finland
- Children’s Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Molecular Medicine and Surgery and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Heli Viljakainen
- Folkhälsan Institute of Genetics, University of Helsinki, Helsinki, Finland
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
- Correspondence should be addressed to H Viljakainen:
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Imga NN, Karci AC, Oztas D, Berker D, Guler S. Effects of vitamin D supplementation on insulin resistance and dyslipidemia in overweight and obese premenopausal women. Arch Med Sci 2019; 15:598-606. [PMID: 31110524 PMCID: PMC6524196 DOI: 10.5114/aoms.2018.75864] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 04/25/2018] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Vitamin D deficiency is a common problem, and it is related to increased risk of obesity, metabolic syndrome, atherosclerosis, and cardiovascular disease. Vitamin D has a beneficial effect on dyslipidemia and insulin secretion. We aimed to investigate the impact of vitamin D3 supplementation on anthropometric and laboratory parameters in overweight and obese premenopausal women. MATERIAL AND METHODS Seventy-two overweight and 50 obese vitamin-D-deficient premenopausal women (mean age: 43.1 ±10.4 years) were included in the study. Baseline mean 25-hydroxyvitamin D [25(OH)D] level was 6.1 (min.-max. = 2.9-15.8) ng/ml in overweight and was 5.6 (min.-max. = 3.0-22.0) ng/ml in obese subjects. At baseline and at the sixth month of supplementation, serum 25(OH)D, intact parathormone (iPTH), calcium, phosphorus, homeostasis model assessment of insulin resistance (HOMA-IR), and lipid profiles were assessed. RESULTS Following vitamin D3 supplementation in overweight and obese subjects, serum 25(OH)D increased from 6.1 to 34.7 ng/ml and 5.6 to 34.7 ng/ml, respectively (p < 0.001). At the sixth month of supplementation in both overweight and obese subjects, a significant reduction was detected in HOMA-IR (p < 0.001), low-density lipoprotein cholesterol (LDL-C) (p = 0.046, p = 0.044; respectively) and iPTH levels (p ≤ 0.001, p < 0.001; respectively). A negative adjusted correlation was found between changes in 25(OH)D and HOMA-IR (r = -0.581, p < 0.001; r = -0.389, p = 0.005; respectively). A 1 ng/ml increase in serum 25(OH)D level led to a 0.30-fold reduction in HOMA-IR level (p = 0.002). CONCLUSIONS Our results support the effect of vitamin D3 supplementation in HOMA-IR and LDL-C improvement in both obese and overweight subjects. Further studies focused on low serum 25(OH)D levels with insulin resistance and dyslipidemia are needed.
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Affiliation(s)
- Narin Nasiroglu Imga
- Department of Endocrinology, Ankara Numune Education and Research Hospital, Saglik Bilimleri University, Ankara, Turkey
| | - Alper Cagri Karci
- Department of Endocrinology, Ankara Numune Education and Research Hospital, Saglik Bilimleri University, Ankara, Turkey
| | - Dilek Oztas
- Department of Public Health, Medical School, Yildirim Beyazit University, Ankara, Turkey
| | - Dilek Berker
- Department of Endocrinology, Ankara Numune Education and Research Hospital, Saglik Bilimleri University, Ankara, Turkey
| | - Serdar Guler
- Department of Endocrinology, Ankara Numune Education and Research Hospital, Saglik Bilimleri University, Ankara, Turkey
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Pantovic A, Zec M, Zekovic M, Obrenovic R, Stankovic S, Glibetic M. Vitamin D Is Inversely Related to Obesity: Cross-Sectional Study in a Small Cohort of Serbian Adults. J Am Coll Nutr 2019; 38:405-414. [PMID: 30633650 DOI: 10.1080/07315724.2018.1538828] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Objective: Vitamin D (vitD) mediates numerous health conditions other than bone health and mineralization. Its role in cardiometabolic condition is still inconclusive. Methods: We conducted a cross-sectional study in 87 apparently healthy Serbian adults. We assessed their dietary intake, anthropometric and biochemical parameters, blood pressure, and vitD status (as serum 25-hydroxyvitamin D, 25(OH)D). Unexpectedly, the status was significantly higher in January than in July. Therefore, we pooled the data from two time points, to enhance the statistical power for carrying out association analyses. We employed linear regression models to evaluate the associations between vitD status and the obesity biomarkers of serum lipids and blood pressure. Results: Mean vitD intake of 3.85 ± 4.71 μg in the cohort was below recommended. Of the subjects in the pooled cohort, 60.58% were vitD deficient (with serum 25(OH)D below 50 nmol/L), with the majority of them being women who were overweight. VitD status tended to be inversely related to percent body fat and waist/height ratio in the crude regression model. After age and gender adjustment, the status was significantly related to waist circumference, waist/height ratio, and waist/hip ratio (β = -0.116, 95% confidence interval [CI]: -0.206, -0.025, β = -0.001, 95% CI: -0.001, 0.000, and β = -0.001, 95% CI: -0.001, 0.000, respectively). These associations remained only within women. Fully adjusted models supported the notion of vitD being independently associated with central adiposity, regardless of age, gender, and total obesity. Conclusions: In apparently healthy adults with low vitD intake, vitD status was inversely associated with obesity parameters, pronouncedly in women. Our data support the need for development and implementation of public health policies on increasing vitD intake also as part of obesity management strategies.
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Affiliation(s)
- Ana Pantovic
- a Institute for Medical Research, Centre of Research Excellence in Nutrition and Metabolism , University of Belgrade , Beograd , Serbia
| | - Manja Zec
- a Institute for Medical Research, Centre of Research Excellence in Nutrition and Metabolism , University of Belgrade , Beograd , Serbia
| | - Milica Zekovic
- a Institute for Medical Research, Centre of Research Excellence in Nutrition and Metabolism , University of Belgrade , Beograd , Serbia
| | - Radmila Obrenovic
- b Centre of Medical Biochemistry , Clinical Centre of Serbia , Belgrade , Serbia
| | - Sanja Stankovic
- b Centre of Medical Biochemistry , Clinical Centre of Serbia , Belgrade , Serbia
| | - Maria Glibetic
- a Institute for Medical Research, Centre of Research Excellence in Nutrition and Metabolism , University of Belgrade , Beograd , Serbia
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Mata-Greenwood E, Huber HF, Li C, Nathanielsz PW. Role of pregnancy and obesity on vitamin D status, transport, and metabolism in baboons. Am J Physiol Endocrinol Metab 2019; 316:E63-E72. [PMID: 30398904 PMCID: PMC6417685 DOI: 10.1152/ajpendo.00208.2018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 09/25/2018] [Accepted: 10/12/2018] [Indexed: 12/17/2022]
Abstract
Human studies show that obesity is associated with vitamin D insufficiency, which contributes to obesity-related disorders. Our aim was to elucidate the regulation of vitamin D during pregnancy and obesity in a nonhuman primate species. We studied lean and obese nonpregnant and pregnant baboons. Plasma 25-hydroxy vitamin D (25-OH-D) and 1α,25-(OH)2-D metabolites were analyzed using ELISA. Vitamin D-related gene expression was studied in maternal kidney, liver, subcutaneous fat, and placental tissue using real-time PCR and immunoblotting. Pregnancy was associated with an increase in plasma bioactive vitamin D levels compared with nonpregnant baboons in both lean and obese groups. Pregnant baboons had lower renal 24-hydroxylase CYP24A1 protein and chromatin-bound vitamin D receptor (VDR) than nonpregnant baboons. In contrast, pregnancy upregulated the expression of CYP24A1 and VDR in subcutaneous adipose tissue. Obesity decreased vitamin D status in pregnant baboons (162 ± 17 vs. 235 ± 28 nM for 25-OH-D, 671 ± 12 vs. 710 ± 10 pM for 1α,25-(OH)2-D; obese vs. lean pregnant baboons, P < 0.05). Lower vitamin D status correlated with decreased maternal renal expression of the vitamin D transporter cubulin and the 1α-hydroxylase CYP27B1. Maternal obesity also induced placental downregulation of the transporter megalin (LRP2), CYP27B1, the 25-hydroxylase CYP2J2, and VDR. We conclude that baboons represent a novel species to evaluate vitamin D regulation. Both pregnancy and obesity altered vitamin D status. Obesity-induced downregulation of vitamin D transport and bioactivation genes are novel mechanisms of obesity-induced vitamin D regulation.
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Affiliation(s)
- Eugenia Mata-Greenwood
- Lawrence Longo Center for Perinatal Biology, School of Medicine, Loma Linda University , Loma Linda, California
| | - Hillary F Huber
- Department of Animal Science, University of Wyoming , Laramie Wyoming
| | - Cun Li
- Department of Animal Science, University of Wyoming , Laramie Wyoming
- Southwest National Primate Research Center, Texas Biomedical Research Institute , San Antonio, Texas
| | - Peter W Nathanielsz
- Department of Animal Science, University of Wyoming , Laramie Wyoming
- Southwest National Primate Research Center, Texas Biomedical Research Institute , San Antonio, Texas
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Jain SK, Parsanathan R, Achari AE, Kanikarla-Marie P, Bocchini JA. Glutathione Stimulates Vitamin D Regulatory and Glucose-Metabolism Genes, Lowers Oxidative Stress and Inflammation, and Increases 25-Hydroxy-Vitamin D Levels in Blood: A Novel Approach to Treat 25-Hydroxyvitamin D Deficiency. Antioxid Redox Signal 2018; 29:1792-1807. [PMID: 30160165 PMCID: PMC6208166 DOI: 10.1089/ars.2017.7462] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AIMS 25-Hydroxyvitamin D [25(OH)VD] deficiency/inadequacy is a major public health issue affecting more than 1 billion people worldwide. A convincing association exists between low levels of circulating 25(OH)VD and the poor health outcomes associated with chronic diseases. However, high supraphysiological doses of VD are needed to achieve the required 25(OH)VD levels in the blood, because many subjects respond poorly to supplementation. RESULTS This study reports a link between 25(OH)VD deficiency and a reduction in glutathione (GSH) in obese adolescents. The improvement in GSH status that results from cosupplementation with VD and l-cysteine (LC; a GSH precursor) significantly reduced oxidative stress in a mouse model of 25(OH)VD deficiency. It also positively upregulated VD regulatory genes (VDBP/VD-25-hydroxylase/VDR) in the liver and glucose metabolism genes (PGC-1α/VDR/GLUT-4) in muscle, boosted 25(OH)VD, and reduced inflammation and insulin resistance (IR) levels in the blood compared with supplementation with VD alone. In vitro GSH deficiency caused increased oxidative stress and downregulation of VDBP/VD-25-hydroxylase/VDR and upregulation of CYP24a1 in hepatocytes and downregulation of PGC-1α/VDR/GLUT-4 in myotubes. This study demonstrates that improvement in the GSH status exerts beneficial effects on the blood levels of 25(OH)VD, as well as on the inflammation and IR in a VD-deficient mouse model. Thus, the VD supplements widely consumed by the public are unlikely to be successful unless the GSH status is also corrected. INNOVATION These studies demonstrate a previously undiscovered mechanism by which GSH status positively upregulates the bioavailability of 25(OH)VD. CONCLUSION Supplementation with a combination of VD and LC or GSH precursor, rather than supplementation with VD alone, is beneficial and helps achieve more successful VD supplementation. Antioxid. Redox Signal. 00, 000-000.
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Affiliation(s)
- Sushil K Jain
- Department of Pediatrics, Louisiana State University Health Sciences Center , Shreveport, Louisiana
| | - Rajesh Parsanathan
- Department of Pediatrics, Louisiana State University Health Sciences Center , Shreveport, Louisiana
| | - Arunkumar E Achari
- Department of Pediatrics, Louisiana State University Health Sciences Center , Shreveport, Louisiana
| | - Preeti Kanikarla-Marie
- Department of Pediatrics, Louisiana State University Health Sciences Center , Shreveport, Louisiana
| | - Joseph A Bocchini
- Department of Pediatrics, Louisiana State University Health Sciences Center , Shreveport, Louisiana
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Karefylakis C, Särnblad S, Ariander A, Ehlersson G, Rask E, Rask P. Effect of Vitamin D supplementation on body composition and cardiorespiratory fitness in overweight men-a randomized controlled trial. Endocrine 2018; 61:388-397. [PMID: 29978375 PMCID: PMC6105237 DOI: 10.1007/s12020-018-1665-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 06/25/2018] [Indexed: 01/09/2023]
Abstract
PURPOSE Several observational studies have shown an association between vitamin D deficiency and non-skeletal major health issues including impaired cardiorespiratory fitness and adiposity. Only a few studies have examined the impact of vitamin D supplementation on these conditions and the results are ambiguous. The aim of this study was to examine the effect of vitamin D supplementation on body composition and cardiorespiratory fitness in overweight/obese men with vitamin D deficiency. METHODS This study was a prospective, placebo controlled, double blinded, randomized trial with a study period of 6 months. Forty overweight/obese men (BMI > 25 kg/m2) with vitamin D deficiency (25(OH)D ≤ 55 nmol/L) were randomized to receive either 2000 IU Cholecalciferol drops or the equivalent amount of drops of placebo. At baseline and follow up body composition and cardiorespiratory fitness were measured and blood samples were obtained. Body composition was measured using bioelectrical impedance analysis (BIA) and cardiorespiratory fitness using cardiopulmonary exercise test (CPET). The primary outcomes were changes in percentage body fat and in maximum oxygen uptake (VO2max). RESULTS No statistically significant difference between the placebo and the intervention group regarding changes in percentage body fat (p = 0.54) and VO2max (p = 0.90) was observed. Moreover, there was no statistically significant difference between the groups concerning changes in BMI (p = 0.26), maximum load (p = 0.89) and oxygen uptake at anaerobic threshold (AT) (p = 0.14). CONCLUSIONS We conclude that treatment with 2000 IU/d vitamin D for 6 months does not impact body composition or maximum oxygen uptake in overweight/obese men with vitamin D deficiency.
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Affiliation(s)
- Christos Karefylakis
- Department of Endocrinology, School of Medical Sciences, Örebro University, SE 70182, Örebro, Sweden.
| | - Stefan Särnblad
- Department of Pediatrics, School of Medical Sciences, Örebro University, SE 70182, Örebro, Sweden
| | | | - Gustaf Ehlersson
- School of Medical Sciences, Örebro University, SE 70182, Örebro, Sweden
| | - Eva Rask
- Department of Endocrinology, School of Medical Sciences, Örebro University, SE 70182, Örebro, Sweden
| | - Peter Rask
- Department of Clinical Physiology, Örebro University Hospital, SE 70185, Örebro, Sweden
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Khayyatzadeh S, Vatanparast H, Avan A, Bagherniya M, Bahrami A, Kiani M, Bahrami-Taghanaki H, Ferns G, Ghayour-Mobarhan M. Serum Transaminase Concentrations and the Presence of Irritable Bowel Syndrome Are Associated with Serum 25-Hydroxy Vitamin D Concentrations in Adolescent Girls Who Are Overweight and Obese. ANNALS OF NUTRITION AND METABOLISM 2017; 71:234-241. [DOI: 10.1159/000484634] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 10/24/2017] [Indexed: 12/31/2022]
Abstract
Background/Aims: Vitamin D deficiency has become endemic globally and its etiology is complex. Few studies have investigated the determinants of serum 25-hydroxy vitamin D (25-OH D). The aim of this study was to investigate the association between lifestyle patterns, liver functional tests (LFTs), and the presence of irritable bowel syndrome (IBS) with serum 25-OH D in apparently healthy girls. Methods: This cross-sectional study was undertaken in 965 adolescent girls aged 12–18 years. IBS was diagnosed using the Rome III questionnaire. An electrochemiluminescence method was used to measure serum 25-OH D. LFTs were measured using commercial kits and an auto analyzer. Linear regression and univariate analyses were performed to determine the association between continuous and categorical variables with serum 25-OH D respectively. Results: Serum 25-OH D was significantly higher in normal weight subjects compared to either overweight or obese subjects (9.5 ± 7.02 vs. 7.9 ± 5.7 ng/mL, p = 0.03). Physical activity level was positively associated with serum 25-OH D in overweight and obese subjects (β = 0.15, p < 0.05). An inverse relationship was found between the presence of IBS and 25-OH D in both normal (β = –1.95, p < 0.05), overweight and obese subjects (β = –1.83, p < 0.05). Serum alanine transaminase (ALT; β = –0.19, p < 0.05) and aspartate transaminase (β = –0.17, p < 0.05) were inversely associated with serum 25-OH in overweight and obese subjects. Conclusions: Individuals with IBS had significantly lower serum 25-OH D concentrations. In addition, there was an inverse association between serum ALT and 25-OH D. Prospective studies, and perhaps interventional trials, will be required to clarify these associations.
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26
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Cordeiro A, Santos A, Bernardes M, Ramalho A, Martins MJ. Vitamin D metabolism in human adipose tissue: could it explain low vitamin D status in obesity? Horm Mol Biol Clin Investig 2017; 33:/j/hmbci.ahead-of-print/hmbci-2017-0003/hmbci-2017-0003.xml. [PMID: 28719363 DOI: 10.1515/hmbci-2017-0003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 04/22/2017] [Indexed: 11/15/2022]
Abstract
Obesity and a low vitamin D (VD) status, as well as a positive association between them, are prevalent worldwide. Additionally, a low VD status has been positively correlated with metabolic dysfunction (although not so convincingly as for obesity). The VD receptor (VDR) mediates VD biological actions in adipose tissue (AT), where VD can be activated or inactivated/degraded through specific hydroxylation steps. Additionally, AT can also store and release VD when needed. A lower VD activation/VD inactivation ratio and an impaired VDR signaling in AT could contribute to metabolic dysfunction besides the aforementioned association between obesity and VD status. However, subcutaneous (SAT) and visceral AT (VAT) are not expected to be similarly accountable as these two fat depots play differential roles in metabolic regulation/dysfunction. To our knowledge, only three articles disclose the evaluation of the expression of VDR and/or VD hydroxylating enzymes in human SAT and VAT. A clear dependence on the subcutaneous and/or the visceral fat depot is missing for the relationships of a) obesity and/or metabolic dysfunction with VD status and b) adipose VDR signaling and adipose VD activation/VD inactivation ratio with VD status, obesity and/or metabolic dysfunction. Further studies are warranted to unravel the influence of adipose VD metabolism on VD status.
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Affiliation(s)
- Adryana Cordeiro
- Micronutrients Research Center (NPqM), Institute of Nutrition Josué de Castro (INJC) of the Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Alejandro Santos
- Faculty of Nutrition and Food Sciences, University of Porto (FCNAUP), 4200-465 Porto, Portugal
| | - Miguel Bernardes
- Department of Medicine, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
| | - Andrea Ramalho
- Micronutrients Research Center (NPqM), Institute of Nutrition Josué de Castro (INJC) of the Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Maria João Martins
- Institute for Research and Innovation in Health (i3s), University of Porto, 4200-135 Porto, Portugal
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Silvagno F, Pescarmona G. Spotlight on vitamin D receptor, lipid metabolism and mitochondria: Some preliminary emerging issues. Mol Cell Endocrinol 2017; 450:24-31. [PMID: 28414049 DOI: 10.1016/j.mce.2017.04.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 04/07/2017] [Accepted: 04/09/2017] [Indexed: 12/19/2022]
Abstract
Transcriptional control and modulation of calcium fluxes underpin the differentiating properties of vitamin D (1,25(OH)2D3). In the latest years however few studies have pointed out the relevance of the mitochondrial effects of the hormone. It is now time to focus on the metabolic results of vitamin D receptor (VDR) action in mitochondria, which can explain the pleiotropic effects of 1,25(OH)2D3 and may elucidate few contrasting aspects of its activity. The perturbation of lipid metabolism described in VDR knockout mice and vitamin D deficient animals can be revisited based on the newly identified mechanism of action of 1,25(OH)2D3 in mitochondria. From the same point of view, the controversial role of 1,25(OH)2D3 in adipogenesis can be better interpreted.
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Affiliation(s)
- Francesca Silvagno
- Department of Oncology, University of Torino, Via Santena 5 bis, 10126 Torino, Italy.
| | - Gianpiero Pescarmona
- Department of Oncology, University of Torino, Via Santena 5 bis, 10126 Torino, Italy.
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Garbossa SG, Folli F. Vitamin D, sub-inflammation and insulin resistance. A window on a potential role for the interaction between bone and glucose metabolism. Rev Endocr Metab Disord 2017; 18:243-258. [PMID: 28409320 DOI: 10.1007/s11154-017-9423-2] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Vitamin D is a key hormone involved in the regulation of calcium/phosphorous balance and recently it has been implicated in the pathogenesis of sub-inflammation, insulin resistance and obesity. The two main forms of vitamin D are cholecalciferol (Vitamin D3) and ergocalciferol (Vitamin D2): the active form (1,25-dihydroxyvitamin D) is the result of two hydroxylations that take place in liver, kidney, pancreas and immune cells. Vitamin D increases the production of some anti-inflammatory cytokines and reduces the release of some pro-inflammatory cytokines. Low levels of Vitamin D are also associated with an up-regulation of TLRs expression and a pro-inflammatory state. Regardless of the effect on inflammation, Vitamin D seems to directly increase insulin sensitivity and secretion, through different mechanisms. Considering the importance of low grade chronic inflammation in metabolic syndrome, obesity and diabetes, many authors hypothesized the involvement of this nutrient/hormone in the pathogenesis of these diseases. Vitamin D status could alter the balance between pro and anti-inflammatory cytokines and thus affect insulin action, lipid metabolism and adipose tissue function and structure. Numerous studies have shown that Vitamin D concentrations are inversely associated with pro-inflammatory markers, insulin resistance, glucose intolerance and obesity. Interestingly, some longitudinal trials suggested also an inverse association between vitamin D status and incident type 2 diabetes mellitus. However, vitamin D supplementation in humans showed controversial effects: with some studies demonstrating improvements in insulin sensitivity, glucose and lipid metabolism while others showing no beneficial effect on glycemic control and on inflammation. In conclusion, although the evidences of a significant role of Vitamin D on inflammation, insulin resistance and insulin secretion in the pathogenesis of obesity, metabolic syndrome and type 2 diabetes, its potential function in treatment and prevention of type 2 diabetes mellitus is unclear. Encouraging results have emerged from Vitamin D supplementation trials on patients at risk of developing diabetes and further studies are needed to fully explore and understand its clinical applications.
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Affiliation(s)
- Stefania Giuliana Garbossa
- Department of Internal Medicine, Azienda Socio Sanitaria Territoriale Santi Paolo e Carlo, Ospedale San Paolo, Via A. Di Rudini 8, Milan, 20142, Italy
- Program in Nutritional Science, Universitá degli Studi di Milano, Milan, Italy
| | - Franco Folli
- Department of Internal Medicine, Azienda Socio Sanitaria Territoriale Santi Paolo e Carlo, Ospedale San Paolo, Via A. Di Rudini 8, Milan, 20142, Italy.
- Endocrinology and Metabolism, Department of Health Science, Universitá degli Studi di Milano, San Paolo Hospital, Room #737, Via A. Di Rudiní 8, 20142, Milan, Italy.
- Department of Medicine, Diabetes Division, University of Texas Health System, 7703 Floyd Curl Drive, San Antonio, 78229, TX, USA.
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Scott D, de Courten B, Ebeling PR. Sarcopenia: a potential cause and consequence of type 2 diabetes in Australia's ageing population? Med J Aust 2017; 205:329-33. [PMID: 27681976 DOI: 10.5694/mja16.00446] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 07/01/2016] [Indexed: 12/23/2022]
Abstract
The incidence of type 2 diabetes is increasing in Australia's older adult population. Sarcopenia, the age-related decline in skeletal muscle mass, quality and function, may make a significant but under-appreciated contribution to increasing the risk of type 2 diabetes. As skeletal muscle is the largest insulin-sensitive tissue in the body, low muscle mass in sarcopenia likely results in reduced capacity for glucose disposal. Age-related declines in muscle quality, including increased mitochondrial dysfunction and fat infiltration, are also implicated in skeletal muscle inflammation and subsequent insulin resistance. Prospective studies have shown that low muscle mass and strength are associated with increased risk of incident type 2 diabetes. Prevalent type 2 diabetes also appears to exacerbate progression of sarcopenia in older adults. Recently developed operational definitions and the inclusion of sarcopenia in the International classification of diseases, 10th revision, clinical modification, provide impetus for clinicians to diagnose and treat sarcopenia in older patients. Simple assessments to diagnose sarcopenia can potentially play a role in primary and secondary prevention of type 2 diabetes in older patients. Lifestyle modification programs for older adults with type 2 diabetes, particularly for those with sarcopenia, should incorporate progressive resistance training, along with adequate intakes of protein and vitamin D, which may improve both functional and metabolic health and prevent undesirable decreases in muscle mass associated with weight loss interventions. As some older adults with type 2 diabetes have a poor response to exercise, clinicians must ensure that lifestyle modification programs are appropriately prescribed, regularly monitored and modified if necessary.
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Liguori C, Izzi F, Mercuri NB, Romigi A, Cordella A, Tarantino U, Placidi F. Vitamin D status of male OSAS patients improved after long-term CPAP treatment mainly in obese subjects. Sleep Med 2017; 29:81-85. [DOI: 10.1016/j.sleep.2016.08.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 08/10/2016] [Accepted: 08/12/2016] [Indexed: 02/07/2023]
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López-Gómez JJ, Pérez Castrillón JL, de Luis Román DA. Influencia de la obesidad sobre el metabolismo óseo. ACTA ACUST UNITED AC 2016; 63:551-559. [DOI: 10.1016/j.endonu.2016.08.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 08/16/2016] [Accepted: 08/17/2016] [Indexed: 02/08/2023]
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Abstract
For individuals at risk for type 2 diabetes mellitus or the metabolic syndrome, adherence to an idealized dietary pattern can drastically alter the risk and course of these chronic conditions. Target levels of carbohydrate intake should approximate 30% of consumed calories. Healthy food choices should include copious fruits, vegetables, and nuts while minimizing foods with high glycemic indices, especially processed foods.
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Affiliation(s)
- Michael A Via
- Division of Endocrinology and Metabolism, Mount Sinai Beth Israel Medical Center, Icahn School of Medicine at Mount Sinai, 317 East 17th Street, 8th Floor, New York, NY 10003, USA.
| | - Jeffrey I Mechanick
- Metabolic Support, Division of Endocrinology, Diabetes and Bone Disease, Icahn School of Medicine at Mount Sinai, 1192 Park Ave, New York, NY 10128, USA
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Mallard SR, Howe AS, Houghton LA. Vitamin D status and weight loss: a systematic review and meta-analysis of randomized and nonrandomized controlled weight-loss trials. Am J Clin Nutr 2016; 104:1151-1159. [PMID: 27604772 DOI: 10.3945/ajcn.116.136879] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 08/02/2016] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Obesity is associated with lower concentrations of serum 25-hydroxyvitamin D; however, uncertainty exists as to the direction of causation. To date, meta-analyses of randomized controlled vitamin D-supplementation trials have shown no effect of raising circulating vitamin D on body weight, although several weight-loss-intervention trials have reported an increase in circulating vitamin D after weight reduction. OBJECTIVE We undertook a systematic review and meta-analysis of randomized and nonrandomized controlled trials to determine whether weight loss compared with weight maintenance leads to an increase in serum 25-hydroxyvitamin D. DESIGN A systematic search for controlled weight-loss-intervention studies published up to 31 March 2016 was performed. Studies that included participants of any age with changes in adiposity and serum 25-hydroxyvitamin D as primary or secondary outcomes were considered eligible. RESULTS We identified 4 randomized controlled trials (n = 2554) and 11 nonrandomized controlled trials (n = 917) for inclusion in the meta-analysis. Random assignment to weight loss compared with weight maintenance resulted in a greater increase in serum 25-hydroxyvitamin D with a mean difference of 3.11 nmol/L (95% CI: 1.38, 4.84 nmol/L) between groups, whereas a mean difference of 4.85 nmol/L (95% CI: 2.59, 7.12 nmol/L) was observed in nonrandomized trials. No evidence for a dose-response effect of weight loss on the change in serum 25-hydroxyvitamin D was shown overall. CONCLUSIONS Our results indicate that vitamin D status may be marginally improved with weight loss in comparison with weight maintenance under similar conditions of supplemental vitamin D intake. Although additional studies in unsupplemented individuals are needed to confirm these findings, our results support the view that the association between obesity and lower serum 25-hydroxyvitamin D may be due to reversed causation with increased adiposity leading to suboptimal concentrations of circulating vitamin D. This trial was registered at www.crd.york.ac.uk/PROSPERO/ as CRD42015023836.
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Affiliation(s)
| | - Anna S Howe
- Department of Human Nutrition, University of Otago, Dunedin, New Zealand
| | - Lisa A Houghton
- Department of Human Nutrition, University of Otago, Dunedin, New Zealand
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Haslacher H, Nistler S, Batmyagmar D, Ponocny-Seliger E, Perkmann T, Scherzer TM, Kundi M, Endler G, Ratzinger F, Pilger A, Wagner OF, Winker R. Low Vitamin D Levels Do Not Predict Hyperglycemia in Elderly Endurance Athletes (but in Controls). PLoS One 2016; 11:e0157695. [PMID: 27304888 PMCID: PMC4909205 DOI: 10.1371/journal.pone.0157695] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 06/02/2016] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND AND AIM Recent studies revealed a link between hypovitaminosis D3 and the risk for hyperglycemia. Further mechanistic and interventional investigations suggested a common reason for both conditions rather than a causal relationship. Exposure to sunlight is the most relevant source of vitamin D3 (25(OH)D), whereas adipose tissue is able to store relevant amounts of the lipophilic vitamin. Since running/bicycling leads to increased out-door time and alters physiological response mechanisms, it can be hypothesized that the correlation between hypovitaminosis D3 and hyperglycemia might be disturbed in outdoor athletes. METHODS 47 elderly marathoners/bicyclists and 47 age/sex matched controls were studied in a longitudinal setting at baseline and after three years. HbA1c as a surrogate for (pre-)diabetic states was quantified via HPLC, 25(OH)D levels were measured by means of chemiluminescent assays. Physical performance was assessed by ergometry. RESULTS When adjusted for seasonal variations, 25(OH)D was significantly higher in athletes than in controls. 25(OH)D levels inversely correlated with triglycerides in both groups, whereas only in controls an association between high BMI or low physical performance with hypovitaminosis D3 had been found. Likewise, the presence of hypovitaminosis D3 at baseline successfully predicted hyperglycemia at the follow up examinations within the control group (AUC = 0.85, 95% CI [0.74, 0.96], p < .001, statistically independent from BMI), but not in athletes. CONCLUSION Our data suggest that mechanisms of HbA1c elevation might differ between athletes and controls. Thus, intense physical activity must be taken into account as a potential pre-analytic confounder when it is aimed to predict metabolic risk by vitamin D3 levels.
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Affiliation(s)
- Helmuth Haslacher
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | | | | | | | - Thomas Perkmann
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | | | - Michael Kundi
- Department of Public Health, Medical University of Vienna, Vienna, Austria
| | | | - Franz Ratzinger
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Alexander Pilger
- Division of Occupational Medicine, Medical University of Vienna, Austria
| | - Oswald F. Wagner
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Robert Winker
- Health and Prevention Center, Sanatorium Hera, Vienna, Austria
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