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Wen X, Wang L, Li F, Yu X. Effects of vitamin D supplementation on metabolic parameters in women with polycystic ovary syndrome: a randomized controlled trial. J Ovarian Res 2024; 17:147. [PMID: 39014475 DOI: 10.1186/s13048-024-01473-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 07/08/2024] [Indexed: 07/18/2024] Open
Abstract
OBJECTIVE The aim of this study was to explore the effects of vitamin D supplementation on metabolic parameters in women with polycystic ovary syndrome (PCOS). METHODS A total of 60 PCOS women with vitamin D deficiency or insufficiency were enrolled in this randomized controlled trial. Participants were randomized to vitamin D group (2000 IU/day) or control group. The observational parameters were measured at baseline and after treatment, including body mass index (BMI), waist to hip ratio (WHR), oral glucose tolerance test (OGTT) and insulin release test, and lipid metabolism parameters. RESULTS The serum 25(OH)D concentrations at different time points after vitamin D supplementation were significantly higher than that in control group (P < 0.05). The BMI, WHR, insulin concentrations, homeostasis model assessment of insulin resistance (HOMA-IR), triglycerides (TG), total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C) concentrations in women of Vitamin D group after 12 weeks of treatment were significantly lower than that in women of control group (P < 0.05). The serum insulin concentrations and HOMA-IR at different time points of OGTT, serum TG, TC and LDL-C concentrations in women of vitamin D group (obesity) were significantly lower compared with control group (obesity) (P < 0.05). The BMI, WHR, TG, TC and LDL-C concentration in women of vitamin D group (IR) were significantly lower compared with control group (IR) (P < 0.05). No significant difference was observed in metabolic parameters between vitamin D group (non-obesity) and control group (non-obesity) (P > 0.05), and these differences of metabolic parameters were also not observed between vitamin D group (non-IR) and control group (non-IR) (P > 0.05). CONCLUSION Vitamin D supplementation had beneficial effects on metabolic parameters in PCOS women, especially in women with obesity or insulin resistance.
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Affiliation(s)
- Xinling Wen
- Department of Anesthesiology and Operation, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Li Wang
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
| | - Fen Li
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Xuewen Yu
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
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AlMulhim SA, AlNaim MM, Khan AS, Memon AQ, AlArfaj HM, Abdulqader AAA, AlMulhim AS. Weight reduction among females undergoing laparoscopic ventral hernia repair: The role of Calcium and Vitamin D3. Pak J Med Sci 2024; 40:922-926. [PMID: 38827847 PMCID: PMC11140342 DOI: 10.12669/pjms.40.5.9047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/18/2024] [Accepted: 02/15/2024] [Indexed: 06/05/2024] Open
Abstract
Objective To evaluate the role of Vitamin-D and calcium supplementation on preoperative weight reduction in obese women before laparoscopic ventral hernia repair. Methods This double-blind clinical trial was conducted at the affiliated health centers of King Faisal University, Al-Ahsa, Saudi Arabia from January 2021 to December 2021. It included forty-five obese women aged 24-56 years, with body mass index (BMI) of 34.0-48.0kg/m2. They were randomly allocated into two groups; the Group-A (N=22) included obese women who received supplementation of 5000IU cholecalciferol (Vitamin-D3), and 1000mg calcium daily for 12 months, while the Group-B (N=23) received no treatment. Measurement of change in weight and BMI and comparison of their pre-operative weight reduction, laparoscopic operative time, and length of hospital stay was done. Results There were no differences in patients' biographic data between the two groups. During the study, Vitamin-D level in the patients increased and there was a significant positive association with weight loss. In group-A, the mean weight loss was 11.8±3.5 kg. At the end of first year, their BMI decreased from 36.1±1.6kg/m2 at baseline to 29.7±2.6 kg/m2, whereas in-group-B, the mean weight loss was 6.8±3.1 kg and their BMI decreased from 36.9±2.69kg/m2 at baseline to 32.7±0.93kg/m2. The operation time and the length of hospital stay were shorter in group-A (107 vs.128.min) and (3 vs. 5 days) respectively as compared to Group-B. Conclusion Vitamin-D and calcium supplementation contributes to a remarkable weight reduction of preoperative obese female patients, which in turn is associated with significantly better outcome of laparoscopic repair of ventral hernia.
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Affiliation(s)
- Saleh Abdulrahman AlMulhim
- Saleh Abdulrahman AlMulhim, MBBS. Family Medicine Physician, Department of Family Medicine, National Guard Hospital (NGHA), AlAhsa, Saudi Arabia
| | - Mounther Mohammed AlNaim
- Mounther Mohammed AlNaim, MBBS, SBFM, ABFM. Associate Consultant in Family Medicine, Department of Family Medicine, National Guard Hospital (NGHA), AlAhsa, Saudi Arabia
| | - Abdul Sattar Khan
- Abdul Sattar Khan, Assistant Professor of Family & Community Medicine, Department of Family & Community Medicine, King Faisal University College of Medicine
| | - Abdul Qadeer Memon
- Abdul Qadeer Memon, FCPS, FICS. Assistant Professor of Surgery, Department of Surgery, King Faisal University College of Medicine, AlAhsa, Saudi Arabia
| | - Haytham Mohammed AlArfaj
- Haytham Mohammed AlArfaj, Assistance Professor of Surgery, Department of Surgery, King Faisal University College of Medicine, AlAhsa, Saudi Arabia
| | - Ahmad A. Al Abdulqader
- Ahmad A. Al Abdulqader, Assistance Professor of Pediatric Surgery, Department of Surgery, King Faisal University College of Medicine, AlAhsa, Saudi Arabia
| | - Abdulrahman Saleh AlMulhim
- Abdulrahman Saleh AlMulhim, FRCSI, FICS, FACS. Professor of Surgery, Department of Surgery, King Faisal University College of Medicine, AlAhsa, Saudi Arabia
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Rached V, Diogenes MEL, Donangelo CM, Bezerra FF. Calcium plus vitamin D supplementation during pregnancy reduces postpartum fat mass in adolescents: A randomized trial. Am J Hum Biol 2023; 35:e23911. [PMID: 37166151 DOI: 10.1002/ajhb.23911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/26/2023] [Accepted: 04/27/2023] [Indexed: 05/12/2023] Open
Abstract
BACKGROUND Pregnancy during adolescence may increase the risk of overweight/obesity. There is evidence that increasing calcium intake, alone or vitamin D-combined, may favor loss of weight and/or fat mass. OBJECTIVES We hypothesized that calcium supplementation during pregnancy reduces excessive fat accumulation during postpartum period. We aimed to investigate the effect of calcium plus vitamin D supplementation during pregnancy on body composition measurements throughout 1 year postpartum in Brazilian adolescents with habitually low calcium intake (~600 mg/day). METHODS Adolescents (14-19 years) were randomly assigned to receive a daily supplement (600 mg of calcium plus 200 UI of cholecalciferol, n = 30) or a placebo (n = 26) from 26 weeks of gestation until parturition. Body composition was determined at 5, 20, and 56 weeks postpartum by dual-energy x-ray absorptiometry. The effects of intervention group, time point, as well as their interaction were assessed using repeated measures mixed-effects models. RESULTS In the adjusted analysis, those supplemented showed lower total body mass [mean difference = -3.32 kg; confidence interval (CI) 95% -6.12 to -0.52 kg], trunk (-1.25 kg; CI 95% -2.34 to -0.15 kg), android (-0.29 kg; CI 95% -0.53 to -0.04 kg) and subcutaneous (-0.23 kg; CI 95% -0.43 to -0.03 kg) fat masses. In the supplemented group, BMI and postpartum weight retention significantly decreased from 5 to 20 weeks (-0.90 kg/m2 and -1.76 kg, respectively; p < .05). At 56 weeks, BMI was still lower (-1.22 kg/m2 ; p < .05) than 5 weeks. CONCLUSIONS Our findings suggest that increasing calcium intake through supplementation in combination with vitamin D contributes to a more pronounced reduction in total body mass overtime, mostly as a consequence of fat mass reductions in central body regions. This trial was registered at clinicaltrials.gov as NCT01732328.
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Affiliation(s)
- Verônica Rached
- Nutrition Institute, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Maria Eduarda Leão Diogenes
- Nutrition Institute, Rio de Janeiro State University, Rio de Janeiro, Brazil
- Brazilian National Cancer Institute José Alencar Gomes da Silva, Coordenação de Prevenção e Vigilância, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
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Gerveieeha Z, Siassi F, Qorbani M, Menbar RS, Ahmadi MH, Sotoudeh G. The effect of vitamin D supplementation on body composition in nursing mothers with overweight or obesity: a randomized double-blind placebo-controlled clinical trial. BMC Nutr 2023; 9:1. [PMID: 36593484 PMCID: PMC9806884 DOI: 10.1186/s40795-022-00664-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 12/26/2022] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND This study aimed to evaluate the effect of vitamin D3 supplementation on body composition and anthropometric measures of nursing mothers. METHODS In a double-blind, randomized clinical trial, 90 nursing mothers with overweight or obesity were randomized into three groups for 12 weeks: two groups of vitamin D3 supplementation (2000 IU/d (VD1), n = 32 and 4000 IU/d (VD2), n = 29) and placebo (PL) group (n = 29). The information on body composition was obtained using the body impedance analysis (BIA) method. Serum 25-Hydroxy vitamin D (25(OH) D), Intact Parathyroid Hormone (iPTH), calcium, and phosphorus were measured before and after the intervention. Data were analyzed based on the intention-to-treat (ITT) method. Two-way repeated measure ANOVA (mixed ANOVA) was applied to assess whether the mean changes in the results from baseline to 12 weeks differ in the three groups. RESULTS There was a significant increase in the serum 25(OH) D concentration in the VD2 group compared to VD1 and PL groups (mean change (MC), 12.3 ng/ml; 95% CI, 9.4/15.0, p-value < 0.001). In addition, fat mass (MC, - 4.3 kg; 95% CI, - 7.0/- 1.1, p-value < 0.007), fat mass index (MC, - 1.6; 95% CI, - 2.6/- 0.5, p-value < 0.006) and body fat percentage (MC, - 8.1; 95% CI, - 12.0/- 4.2, p-value < 0.007) reduced in VD2 group as compared with VD1 and PL groups. CONCLUSION The intake of 4000 IU/d vitamins D3 supplementation would elevate circulating 25(OH) D concentrations in nursing mothers with overweight or obesity and improve some indices of body composition. TRIAL REGISTRATION Iranian Registry of Clinical Trials ( http://www.irct.ir : IRCT20140413017254N6) registered on 11-04-2018. The graphical abstract of this clinical trial, is a figure that explains the final results of the manuscript in a clear and attractive way.
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Affiliation(s)
- Zohre Gerveieeha
- grid.411705.60000 0001 0166 0922Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Hojatdost street, Naderi street, Keshavarz Blvd, Tehran, Iran
| | - Fereydoun Siassi
- grid.411705.60000 0001 0166 0922Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Hojatdost street, Naderi street, Keshavarz Blvd, Tehran, Iran
| | - Mostafa Qorbani
- grid.411705.60000 0001 0166 0922Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Rezgar Shahi Menbar
- grid.411036.10000 0001 1498 685XDepartment of Community Nutrition, School of Nutritional Sciences and Dietetics, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Hossein Ahmadi
- grid.412606.70000 0004 0405 433XDepartment of Medical Laboratory Sciences, school of Allied Medicine, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Gity Sotoudeh
- grid.411705.60000 0001 0166 0922Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Hojatdost street, Naderi street, Keshavarz Blvd, Tehran, Iran
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BONETTI GABRIELE, HERBST KARENL, DONATO KEVIN, DHULI KRISTJANA, KIANI AYSHAKARIM, AQUILANTI BARBARA, VELLUTI VALERIA, MATERA GIUSEPPINA, IACONELLI AMERIGO, BERTELLI MATTEO. Dietary supplements for obesity. JOURNAL OF PREVENTIVE MEDICINE AND HYGIENE 2022; 63:E160-E168. [PMID: 36479472 PMCID: PMC9710396 DOI: 10.15167/2421-4248/jpmh2022.63.2s3.2757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Obesity and associated complications including diabetes, cardiometabolic dysfunction, disability, malignancy and premature mortality are considered epidemic. Research on obesity is therefore of worldwide importance. The development of obesity is a multifactorial phenomenon with contributions from biological, behavioral, genetic and environmental factors. Obesity and its associated issues require various lifestyle modifications and treatment options such medication, exercise, diet, surgery, pharmacological therapy and dietary supplements. Dietary supplements are considered an attractive alternative to traditional therapy due to their low toxicity profile and their accessibility to the general population. Dietary supplements may include one or more dietary ingredients. In this narrative review, we analyze the effects on obesity and obesity-related issues of various natural components. For example, there are a myriad of supplements that have been used as dietary supplements for weight loss such as minerals, vitamins, amino acids, metabolites, herbs, and plant extracts. This narrative review aims to present the benefits and side-effects of several ingredients of dietary supplements for weight loss and treatment of obesity. In particular, the mechanism of action, results of clinical trials, and possible side effects will be presented for the following ingredients: β-Glucans, bitter orange, calcium, vitamin D, chitosan, chromium, cocoa, coleus forskohlii, conjugate linoleic acid, ephedra sinica, fucoxanthin, garcinia cambogia, glucomannan, green coffee, green tea, guar gum, raspberry, hoodia gordonii, irvingia gabonensis, phenylpropylamine, pyruvate, white kidney bean.
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Affiliation(s)
- GABRIELE BONETTI
- MAGI’S LAB, Rovereto (TN), Italy
- Correspondence: Gabriele Bonetti, MAGI’S LAB, Rovereto (TN) 38068, Italy. E-mail:
| | - KAREN L. HERBST
- Total Lipedema Care, Beverly Hills (California) and Tucson (Arizona), USA
| | | | | | | | - BARBARA AQUILANTI
- UOSD Medicina Bariatrica, Fondazione Policlinico Agostino Gemelli IRCCS, Rome, Italy
| | - VALERIA VELLUTI
- UOSD Medicina Bariatrica, Fondazione Policlinico Agostino Gemelli IRCCS, Rome, Italy
| | - GIUSEPPINA MATERA
- UOSD Medicina Bariatrica, Fondazione Policlinico Agostino Gemelli IRCCS, Rome, Italy
| | - AMERIGO IACONELLI
- UOSD Medicina Bariatrica, Fondazione Policlinico Agostino Gemelli IRCCS, Rome, Italy
| | - MATTEO BERTELLI
- MAGI’S LAB, Rovereto (TN), Italy
- MAGI EUREGIO, Bolzano, Italy
- MAGISNAT, Peachtree Corners (GA), USA
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Interrelationship between Vitamin D and Calcium in Obesity and Its Comorbid Conditions. Nutrients 2022; 14:nu14153187. [PMID: 35956362 PMCID: PMC9370653 DOI: 10.3390/nu14153187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 07/24/2022] [Accepted: 07/31/2022] [Indexed: 02/01/2023] Open
Abstract
Obesity has been linked to vitamin D (VD) deficiency and low calcium (CAL) status. In the last decade, dietary supplementation of vitamin D and calcium (VD–CAL) have been extensively studied in animal experiments and human studies. However, the physiological mechanisms remain unknown as to whether the VD–CAL axis improves homeostasis and reduces biomarkers in regulating obesity and other metabolic diseases directly or indirectly. This review sought to investigate their connections. This topic was examined in scientific databases such as Web of Science, Scopus, and PubMed from 2011 to 2021, and 87 articles were generated for interpretation. Mechanistically, VD–CAL regulates from the organs to the blood, influencing insulin, lipids, hormone, cell, and inflammatory functions in obesity and its comorbidities, such as non-alcoholic fatty liver disease, cardiovascular disease, and type-2 diabetes mellitus. Nevertheless, previous research has not consistently shown that simultaneous VD–CAL supplementation affects weight loss or reduces fat content. This discrepancy may be influenced by population age and diversity, ethnicity, and geographical location, and also by degree of obesity and applied doses. Therefore, a larger prospective cohort and randomised trials are needed to determine the exact role of VD–CAL and their interrelationship.
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Vitamin D and Visceral Obesity in Humans: What Should Clinicians Know? Nutrients 2022; 14:nu14153075. [PMID: 35893929 PMCID: PMC9332747 DOI: 10.3390/nu14153075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 07/18/2022] [Accepted: 07/22/2022] [Indexed: 02/06/2023] Open
Abstract
The extraskeletal effect of vitamin D on adipose tissue biology and modulation in human obesity is of great interest and has been extensively investigated. Current evidence from preclinical and clinical studies in human adipose tissue suggests that the anti-inflammatory effects of vitamin D are evident and consistent, whereas the effects of vitamin D on adipocyte differentiation, adipogenesis, and energy metabolism and the effects of vitamin D supplementation on adipokine levels are inconclusive. Interventional studies related to medical and surgical weight loss in humans have shown small or no improvement in vitamin D status. Additionally, the benefit of vitamin D supplementation for the reduction in visceral adipose tissue has only been demonstrated in a few studies. Overall, the findings on the relationship between vitamin D and visceral adipose tissue in humans are still inconclusive. Further studies are required to confirm the beneficial effects of vitamin D on ameliorating adipose tissue dysfunction.
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Yun K, Zhang S, Yang X, Man D, Yao J, Wang W, Han X. Corrected Serum Ionized Calcium as a Risk Factor Related to Adult Dyslipidemia. Front Cardiovasc Med 2022; 9:916991. [PMID: 35872922 PMCID: PMC9299357 DOI: 10.3389/fcvm.2022.916991] [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: 04/11/2022] [Accepted: 06/13/2022] [Indexed: 11/13/2022] Open
Abstract
Background Dyslipidemia is a significant threat to global public health due to its pivotal role as a cardiovascular disease (CVD) risk factor. Calcium is a critical nutritional element required for electrical signal transduction and muscle and heart function, and calcium supplementation is widespread in the general population. However, associations between serum calcium and serum lipid profiles remain conflicting. Considering ionized calcium [Ca(2+)] is the best measure of active serum calcium and the lack of Ca(2+) analyzers, we aimed to examine the independent and joint associations between serum ionized calcium corrected by albumin ([Ca2+]corr) and the known modifiable risk factors and dyslipidemia. Methods We collected physical examination records, including demographic, anthropometric, laboratory tests, and clinical characteristics from individuals who had health checkups in 2019 at the health examination center of the First Affiliated Hospital of China Medical University. Subjects were categorized into Q1–Q4 groups using [Ca2+]corr quartiles, and odds ratios (ORs) with 95% confidence intervals (CIs) for dyslipidemia and associated components were calculated using logistic regression. We also performed non-linear and threshold effect analyses of [Ca2+]corr and triglyceride (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), and non-high-density lipoprotein cholesterol (Non-HDL-C) levels. Findings Of 5,416 individuals aged 18–92 years, multivariable-adjusted models showed that ORs for dyslipidemia increased gradually with elevated [Ca2+]corr levels. Logistic regression analyses demonstrated that [Ca2+]corr levels were associated with the increased odds of dyslipidemia (per 1 mmol/L increase: OR = 3.53, 95% CI: 1.56–8.00, P < 0.001). When compared with individuals in the Q1 group, those in groups Q3 and Q4 had significantly higher dyslipidemia odds (ORQ3 vs. Q1 = 1.20, 95% CI: 1.01–1.42; ORQ4 vs. Q1 = 1.31, 95% CI: 1.10–1.56, all P < 0.05). Furthermore, a linear, positive relationship between [Ca2+]corr levels and dyslipidemia odds was observed (P for non-linear trend = 0.506), and the optimal cut-off point of [Ca2+]corr for dyslipidemia management was 2.26 mmol/L. A modifiable effect of albumin on the relationship between [Ca2+]corr and dyslipidemia odds was also found (P for interaction = 0.014). High [Ca2+]corr levels were positively associated with elevated TC, LDL-C, and Non-HDL-C but inversely associated with decreased HDL-C odds. Moreover, Locally weighted regression (Loess) analyses showed a non-linear, positive relationship between [Ca2+]corr and TG, TC, HDL-C, LDL-C, and Non-HDL-C levels. Interpretation Corrected serum ionized calcium was positively associated with increased odds of dyslipidemia and elevated TC, LDL-C, and Non-HDL-C, but inversely associated with the odds of decreased HDL-C.
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Affiliation(s)
- Ke Yun
- National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Shuang Zhang
- National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- Units of Medical Laboratory, Chinese Academy of Medical Sciences, Shenyang, China
- NHC Key Laboratory of AIDS Immunology, China Medical University, Shenyang, China
| | - Xiaotao Yang
- National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Dongliang Man
- National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Jialiang Yao
- National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Wei Wang
- Department of Physical Examination Center, The First Affiliated Hospital of China Medical University, Shenyang, China
- *Correspondence: Wei Wang,
| | - Xiaoxu Han
- National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- Units of Medical Laboratory, Chinese Academy of Medical Sciences, Shenyang, China
- NHC Key Laboratory of AIDS Immunology, China Medical University, Shenyang, China
- Xiaoxu Han,
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An HJ, Seo YG. Differences in Fat-Free Mass According to Serum Vitamin D Level and Calcium Intake: Korea National Health and Nutrition Examination Survey 2008-2011. J Clin Med 2021; 10:jcm10225428. [PMID: 34830710 PMCID: PMC8623334 DOI: 10.3390/jcm10225428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/19/2021] [Accepted: 11/19/2021] [Indexed: 12/11/2022] Open
Abstract
We analyzed the differences in fat-free mass (FFM) according to serum vitamin D level (VitD) and daily calcium intake (Ca) in 14,444 adults aged over 19 years. We used data from the 4th and 5th Korea National Health and Nutrition Examination Surveys (2008–2011). FFM was measured using dual-energy X-ray absorptiometry. VitD was classified as insufficient or sufficient (cutoff: 20 ng/mL). Ca was classified as unsatisfactory or satisfactory (recommended daily intake: 700 mg). In men, the FFM of group 2 (VitD ≥ 20 ng/mL; Ca < 700 mg), group 3 (VitD < 20 ng/mL; Ca ≥ 700 mg) and group 4 (VitD ≥ 20 ng/mL; Ca ≥ 700 mg) was 0.50 kg (95% confidence interval (CI), 0.084–0.92), 0.78 kg (95% CI, 0.26–1.29) and 1.58 kg (95% CI, 0.95–2.21) higher than that of group 1 (VitD < 20 ng/mL; Ca < 700 mg), respectively. In women, a 1 ng/mL increase in VitD was associated with a 0.023 kg increase in FFM (95% CI, 0.003–0.043) and a 1 g increase in Ca was associated with a 0.62 kg increase in FFM (95% CI, 0.067–1.16). High VitD and Ca were associated with a high FFM.
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Hajhashemy Z, Foshati S, Saneei P. Relationship between abdominal obesity (based on waist circumference) and serum vitamin D levels: a systematic review and meta-analysis of epidemiologic studies. Nutr Rev 2021; 80:1105-1117. [PMID: 34537844 DOI: 10.1093/nutrit/nuab070] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
CONTEXT Although previous observational studies have investigated the association between waist circumference (WC) values and serum vitamin D levels, findings have been inconsistent. OBJECTIVE A systematic review and meta-analysis was performed to evaluate the effect of abdominal obesity (based on WC) on vitamin D deficiency or insufficiency in adults. DATA SOURCES A systematic search of the published literature up to September 2020 was conducted in electronic databases, including MEDLINE (PubMed), EMBASE, Institute for Scientific Information (ISI) (Web of Science), Scopus, and Google Scholar, for observational studies that investigated the association between abdominal obesity (based on WC) or different categories of WC as the exposure and serum 25-hydroxy vitamin D levels as the outcome. DATA EXTRACTION Eighteen cross-sectional studies were included in the review. The relationship between WC values and combined serum vitamin D deficiency and insufficiency (<30 ng/mL) or vitamin D deficiency (<20 ng/mL) was evaluated. DATA ANALYSIS Combining 8 effect sizes from 5 investigations, including 7997 individuals, illustrated that the highest category of WC, compared with the lowest category of WC, was related to 82% increased odds of combined serum vitamin D deficiency and insufficiency (<30 ng/mL) (OR: 1.82; 95% CI: 1.34, 2.49). Moreover, in studies that investigated both genders together, the highest category of WC, compared with the lowest category of WC, was associated with 61% increased odds of serum vitamin D deficiency (<20 ng/mL) (OR: 1.61; 95% CI: 1.12, 2.31). The same results were obtained for almost all subgroups for several covariates. CONCLUSION This meta-analysis of cross-sectional studies confirmed that increased WC was related to the elevated risk of combined vitamin D deficiency and insufficiency in adults. More prospective studies are needed to confirm causality. SYSTEMATIC REVIEW REGISTRATION PROSPERO registration no. CRD42020190485.
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Affiliation(s)
- Zahra Hajhashemy
- Z. Hajhashemy is with the Students' Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran.,Z. Hajhashemy and P. Saneei are with the Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sahar Foshati
- S. Foshati is with the Department of Clinical Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Parvane Saneei
- Z. Hajhashemy and P. Saneei are with the Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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Hamouda HA, Mansour SM, Elyamany MF. Vitamin D Combined with Pioglitazone Mitigates Type-2 Diabetes-induced Hepatic Injury Through Targeting Inflammation, Apoptosis, and Oxidative Stress. Inflammation 2021; 45:156-171. [PMID: 34468908 DOI: 10.1007/s10753-021-01535-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 08/04/2021] [Indexed: 12/31/2022]
Abstract
Inflammation is a major pathophysiological factor in development of type-2 diabetes mellitus (T2DM). Vitamin D (VITD) plays an imperative role in modulation of several inflammatory responses. The current study aimed to investigate the possible beneficial effects of coadministration of VITD with pioglitazone (PIO), a PPAR-γ agonist, in fructose/streptozotocin (F/STZ) T2DM model in male Wistar rats. T2DM was induced by maintaining rats on 10% (w/v) fructose in drinking water for 9 weeks with an intraperitoneal injection of sub-diabetogenic dose of STZ (35 mg/kg) by the end of the fourth week. One week after STZ injection, PIO (10 mg/kg/day) alone or with VITD (500 IU/kg/day) was administered orally to diabetic rats till the end of the experiment. Blood samples were collected, livers were homogenized to determine biochemical parameters, and samples of livers were fixed in 10% formalin in saline for histological examination. Administration of PIO alone improved diabetes-induced inflammatory and oxidative states besides controlling hyperglycemia and decreasing apoptosis. Coadministration of VIT D with PIO promoted additional improvement in glycemic and lipid profiles, provided further control on diabetic-induced hepatic inflammation evident by downregulating TLR2, TLR4, and IKK-β while upregulating IκB-α expression and reducing inflammatory cytokines namely; NF-κB, TNF-α, IL-6, and IL-1β, decreasing apoptosis and oxidative stress by hampering caspase-3 and MDA contents, respectively, and improved liver histology than PIO alone. These beneficial effects of VIT D may expand its use by diabetics combined with antidiabetic drugs due to its anti-inflammatory, antioxidant, and antiapoptotic properties.
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Affiliation(s)
- Hend A Hamouda
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt. .,Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Suzan M Mansour
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.,Department of Pharmacology, Toxicology and Biochemistry, Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Mohammed F Elyamany
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
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12
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Menshawey E, Menshawey R, Nabeh OA. Shedding light on vitamin D: the shared mechanistic and pathophysiological role between hypovitaminosis D and COVID-19 risk factors and complications. Inflammopharmacology 2021; 29:1017-1031. [PMID: 34185200 PMCID: PMC8239482 DOI: 10.1007/s10787-021-00835-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/16/2021] [Indexed: 02/07/2023]
Abstract
Severe acute respiratory syndrome coronavirus (SARS-COV-2) is the culprit of the Coronavirus Disease (COVID-19), which has infected approximately 173 million people and killed more than 3.73 million. At risk groups including diabetic and obese patients are more vulnerable to COVID-19-related complications and poor outcomes. Substantial evidence points to hypovitaminosis D as a risk factor for severe disease, the need for ICU, and mortality. 1,25(OH)D, a key regulator of calcium homeostasis, is believed to have various immune-regulatory roles including; promoting anti-inflammatory cytokines, down regulating pro-inflammatory cytokines, dampening entry and replication of SARS-COV-2, and the production of antimicrobial peptides. In addition, there are strong connections which suggest that dysregulated 1,25(OH)D levels play a mechanistic and pathophysiologic role in several disease processes that are shared with COVID-19 including: diabetes, obesity, acute respiratory distress syndrome (ARDS), cytokine storm, and even hypercoagulable states. With evidence continuing to grow for the case that low vitamin D status is a risk factor for COVID-19 disease and poor outcomes, there is a need now to address the public health efforts set in place to minimize infection, such as lock down orders, which may have inadvertently increased hypovitaminosis D in the general population and those already at risk (elderly, obese, and disabled). Moreover, there is a need to address the implications of this evidence and how we may apply the use of cheaply available supplementation, which has yet to overcome the near global concern of hypovitaminosis D. In our review, we exhaustively scope these shared pathophysiologic connections between COVID-19 and hypovitaminosis D.
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Affiliation(s)
- Esraa Menshawey
- Faculty of Medicine, Cairo University, Kasr al Ainy, Geziret Elroda, Manial, Cairo, 11562 Egypt
| | - Rahma Menshawey
- Faculty of Medicine, Cairo University, Kasr al Ainy, Geziret Elroda, Manial, Cairo, 11562 Egypt
| | - Omnia Azmy Nabeh
- Faculty of Medicine, Department of Medical Pharmacology, Cairo University, Kasr al Ainy, Geziret Elroda, Manial, Cairo, 11562 Egypt
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13
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Batsis JA, Apolzan JW, Bagley PJ, Blunt HB, Divan V, Gill S, Golden A, Gundamraj S, Heymsfield S, Kahan S, Kopatsis K, Port A, Parks EP, Reilly CA, Rubino D, Saunders KH, Shean R, Tabaza L, Stanley A, Tchang BG, Gundumraj S, Kidambi S. A Systematic Review of Dietary Supplements and Alternative Therapies for Weight Loss. Obesity (Silver Spring) 2021; 29:1102-1113. [PMID: 34159755 PMCID: PMC8231729 DOI: 10.1002/oby.23110] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/06/2020] [Accepted: 12/08/2020] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Dietary supplements and alternative therapies are commercialized as a panacea for obesity/weight gain as a result of the minimal regulatory requirements in demonstrating efficacy. These products may indirectly undermine the value of guideline-driven obesity treatments. Included in this study is a systematic review of the literature of purported dietary supplements and alternative therapies for weight loss. METHODS A systematic review was conducted to evaluate the efficacy of dietary supplements and alternative therapies for weight loss in participants aged ≥18 years. Searches of Medline (PubMed), Cochrane Library, Web of Science, CINAHL, and Embase (Ovid) were conducted. Risk of bias and results were summarized qualitatively. RESULTS Of the 20,504 citations retrieved in the database search, 1,743 full-text articles were reviewed, 315 of which were randomized controlled trials evaluating the efficacy of 14 purported dietary supplements, therapies, or a combination thereof. Risk of bias and sufficiency of data varied widely. Few studies (n = 52 [16.5%]) were classified as low risk and sufficient to support efficacy. Of these, only 16 (31%) noted significant pre/post intergroup differences in weight (range: 0.3-4.93 kg). CONCLUSIONS Dietary supplements and alternative therapies for weight loss have a limited high-quality evidence base of efficacy. Practitioners and patients should be aware of the scientific evidence of claims before recommending use.
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Affiliation(s)
- John A. Batsis
- Division of Geriatric Medicine, School of Medicine, and the Department of Nutrition, The Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - John W. Apolzan
- Pennington Biomedical Research Center, Louisiana State University Sysytem, Baton Rouge, Louisiana
| | | | | | | | - Sonia Gill
- University of California, Davis School of Medicine, Sacramento, California
| | | | | | - Steven Heymsfield
- Pennington Biomedical Research Center, Louisiana State University Sysytem, Baton Rouge, Louisiana
| | - Scott Kahan
- Director, National Center for Weight and Wellness, George Washington University Milken Institute School of Public Health, Washington, DC
| | | | - Ava Port
- Division of Endocrinology, Diabetes and Nutrition, University of Maryland School of Medicine, Baltimore, MD
| | - Elizabeth Prout Parks
- The Children’s Hospital of Philadelphia, Division of Gastroenterology, Hepatology and Nutrition, The Healthy Weight Program, Perelman Medical Center, University of Pennsylvania
| | - Clifford A. Reilly
- The Robert Larner, M.D. College of Medicine at The University of Vermont, Burlington VT
| | - Domenica Rubino
- Washington Center for Weight Management and Research, Arlington, VA
| | - Katherine H. Saunders
- Comprehensive Weight Control Center, Division of Endocrinology, Diabetes, and Metabolism, Weill Cornell Medicine, New York, NY
| | - Ryan Shean
- Dartmouth College, Hanover, New Hampshire
| | - Luai Tabaza
- Albert Einstein Medical Center, Philadelphia, PA
| | - Abishek Stanley
- Pennington Biomedical Research Center, Louisiana State University Sysytem, Baton Rouge, Louisiana
| | - Beverly G. Tchang
- Comprehensive Weight Control Center, Division of Endocrinology, Diabetes, and Metabolism, Weill Cornell Medicine, New York, NY
| | - Shivani Gundumraj
- AT Still University School of Osteopathic Medicine in Arizona, Mesa, AZ
| | - Srividya Kidambi
- Division of Endocrinology and Molecular Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
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14
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Miao J, Bachmann KN, Huang S, Su YR, Dusek J, Newton-Cheh C, Arora P, Wang TJ. Effects of Vitamin D Supplementation on Cardiovascular and Glycemic Biomarkers. J Am Heart Assoc 2021; 10:e017727. [PMID: 33960201 PMCID: PMC8200713 DOI: 10.1161/jaha.120.017727] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Background Experimental and observational studies have suggested a link between vitamin D and cardiovascular and metabolic disease, but this has not been confirmed in randomized controlled trials. We sought to determine whether vitamin D supplementation reduces biomarkers of insulin resistance, inflammation, neurohormonal activation, and lipids. Methods and Results This was a prespecified, secondary analysis of the DAYLIGHT (Vitamin D Therapy in Individuals at High Risk of Hypertension) randomized controlled trial. We measured circulating homeostatic model assessment of insulin resistance, hs-CRP (high-sensitivity C-reactive protein), N-terminal pro-B-type natriuretic peptide, renin, aldosterone, and lipids at baseline and at 6 months in 289 individuals with low vitamin D status (25-hydroxyvitamin-D [25-OH-D] ≤25 ng/mL) receiving low-dose (400 IU/d) versus high-dose (4000 IU/d) vitamin D3 for 6 months. A meta-analysis of randomized controlled trials reporting biomarker changes after vitamin D supplementation was then performed. Levels of 25-OH-D increased in the high-dose relative to the low-dose vitamin D group (+15.5 versus +4.6 ng/mL, P<0.001). Changes in biomarkers of glycemia, inflammation, and neurohormonal activation did not differ by dose. Lipids did not differ between groups, other than triglycerides, which increased in the high-dose compared with the low-dose group (+11.3 versus -6.2 mg/dL, P<0.001). The meta-analysis showed potential modest decreases in homeostatic model assessment of insulin resistance and hs-CRP, but no changes in low-density lipoprotein, after vitamin D supplementation compared with control groups. Conclusions In the DAYLIGHT randomized controlled trial, high-dose vitamin D supplementation did not improve biomarkers of glycemia, inflammation, neurohormonal activation, or lipids. Registration URL: https://www.clinicaltrials.gov; Unique identifier: NCT01240512.
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Affiliation(s)
- Jennifer Miao
- Department of Medicine Vanderbilt University Medical Center Nashville TN
| | - Katherine N Bachmann
- Veterans Health AdministrationTennessee Valley Healthcare System Nashville TN.,Division of Diabetes, Endocrinology, and Metabolism Department of Medicine Vanderbilt University Medical Center Nashville TN.,Vanderbilt Translational and Clinical Cardiovascular Research Center Vanderbilt University School of Medicine Nashville TN
| | - Shi Huang
- Vanderbilt Translational and Clinical Cardiovascular Research Center Vanderbilt University School of Medicine Nashville TN.,Department of Biostatistics Vanderbilt University Medical Center Nashville TN
| | - Yan Ru Su
- Division of Cardiovascular Medicine Department of Medicine Vanderbilt University Medical Center Nashville TN
| | - Jeffery Dusek
- Department of Family Medicine and Community Health Case Western University Medical Center Cleveland OH
| | | | - Pankaj Arora
- Division of Cardiovascular Disease University of Alabama at Birmingham Birmingham AL.,Section of Cardiology Birmingham Veterans Affairs Medical Center Birmingham AL
| | - Thomas J Wang
- Department of Internal Medicine University of Texas Southwestern Medical Center Dallas TX
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15
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Hajhashemy Z, Shahdadian F, Ziaei R, Saneei P. Serum vitamin D levels in relation to abdominal obesity: A systematic review and dose-response meta-analysis of epidemiologic studies. Obes Rev 2021; 22:e13134. [PMID: 32881271 DOI: 10.1111/obr.13134] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 08/08/2020] [Accepted: 08/08/2020] [Indexed: 12/14/2022]
Abstract
Although several observational studies have investigated the relationship between vitamin D deficiency and risk of central obesity, the results were inconsistent. We performed a dose-response meta-analysis on epidemiologic studies that evaluated the association of vitamin D status and abdominal obesity in adults. A systematic search was carried out of all published articles, up to May 2020, in five electronic databases, including MEDLINE (Pubmed), EMBASE, Institute for Scientific Information (ISI) (Web of science), Scopus and Google scholar. Forty-one observational studies reported odds ratios (ORs) or relative risks (RRs) with 95% confidence intervals (CIs) for abdominal obesity in relation to serum vitamin D levels in adults were included in the analysis. Using a random effects model, the overall effect size was calculated. Combining 44 effect sizes from 36 cross-sectional studies with 257,699 participants revealed that the highest versus the lowest serum vitamin D level was significantly associated with a 23% decreased odds of abdominal obesity (OR: 0.77; 95% CI [0.71, 0.83]). This inverse association was significant in almost all subgroups based on different covariates. Dose-response analysis showed that each 25 nmol/L increase in serum vitamin D was related to 8% reduced risk of abdominal obesity (OR: 0.92; 95% CI [0.85, 0.99]). When we confined the analysis to 23 effect sizes from 17 studies with representative population (242,135 participants), the same results were obtained (OR: 0.79; 95% CI [0.71, 0.87]). Dose-response analysis indicated that each 25 nmol/L increase in blood vitamin D levels was linked to 10% decreased central adiposity risk in representative populations (OR: 0.90; 95% CI [0.82, 0.99]). This meta-analysis of epidemiologic studies revealed that serum vitamin D level was inversely associated with risk of abdominal obesity in adults, in a dose-response manner. The same findings were obtained in representative populations. Further prospective studies are required to examine the causal association between serum vitamin D levels and abdominal obesity.
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Affiliation(s)
- Zahra Hajhashemy
- Students' Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran.,Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Farnaz Shahdadian
- Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Rahele Ziaei
- Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Parvane Saneei
- Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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16
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Time trends of colorectal cancer incidence and associated lifestyle factors in South Korea. Sci Rep 2021; 11:2413. [PMID: 33510236 PMCID: PMC7844005 DOI: 10.1038/s41598-021-81877-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 01/08/2021] [Indexed: 02/07/2023] Open
Abstract
Worldwide, South Korea had the second highest incidence rates of colorectal cancer (CRC) in 2018. To inform public health policy to prevent CRC, we aimed to identify major modifiable lifestyle factors underlying the alarming increase in CRC incidence. We obtained information on CRC statistics from the Korea National Cancer Incidence Database and on the distribution of dietary and lifestyle factors known to modify CRC risk from the Korea National Health and Nutrition Examination Survey. To examine time trends between 2001 and 2013, we calculated annual percent changes of CRC incidence rates and of prevalence of etiologic factors by sex and age. Across all sex and age groups, the most commonly diagnosed cancer was rectal cancer while the most rapidly increasing cancer was distal colon cancer. For the lifestyle factors examined, decreases in exercise were observed across all age groups of both sexes. Yet, obesity and alcoholic drinks appear more relevant CRC contributor to men, smoking to women aged 30–49 years, and processed meat intake to adults aged 30–49 years. The heterogeneous results suggest that dietary and lifestyle target to prevent CRC be tailored by sex and age.
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17
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Karava V, Christoforidis A, Kondou A, Dotis J, Printza N. Update on the Crosstalk Between Adipose Tissue and Mineral Balance in General Population and Chronic Kidney Disease. Front Pediatr 2021; 9:696942. [PMID: 34422722 PMCID: PMC8378583 DOI: 10.3389/fped.2021.696942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 07/06/2021] [Indexed: 11/17/2022] Open
Abstract
Adipose tissue is nowadays considered as a major endocrine organ, which apart from controlling lipid metabolism, displays a significant role in energy expenditure, food intake and in the regulation of various systemic physiological processes. Adipose derived pro-inflammatory cytokines and adipokines, particularly leptin and adiponectin, provide inter-communication of adipose tissue with various metabolic pathways, ultimately resulting in a complex network of interconnected organ systems. Recent clinical and experimental research has been focused on exploring the direct interaction between adipokine profile and elements of mineral metabolism, including parathormone (PTH), fibroblast growth factor-23 (FGF23) and calcitriol. The emerging crosstalk between adipose tissue and calcium and phosphorus homeostasis suggests that metabolic disorders from one system may directly affect the other and vice versa. It is current knowledge that fat metabolism disturbance, commonly encountered in obese individuals, influences the expression of calciotriopic hormones in general population, while various clinical trials attempting to successfully achieve body fat loss by modulating mineral profile have been published. In chronic kidney disease (CKD) state, there is an increasing evidence suggesting that mineral disorders, influence adipose tissue and linked endocrine function. On the contrary, the impact of disturbed fat metabolism on CKD related mineral disorders has been also evocated in clinical studies. Recognizing the pathogenetic mechanisms of communication between adipose tissue and mineral balance is critical for understanding the effects of metabolic perturbations from the one system to the other and for identifying possible therapeutic targets in case of disrupted homeostasis in one of the two connected systems. To that end, this review aims to enlighten the recent advances regarding the interplay between mineral metabolism, fat mass and adipokine profile, based on in vitro, in vivo and clinical studies, in general population and in the course of CKD.
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Affiliation(s)
- Vasiliki Karava
- Pediatric Nephrology Unit, 1st Department of Pediatrics, Hippokratio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Athanasios Christoforidis
- Pediatric Endocrinology Unit, 1st Department of Pediatrics, Hippokratio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Antonia Kondou
- Pediatric Nephrology Unit, 1st Department of Pediatrics, Hippokratio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - John Dotis
- Pediatric Nephrology Unit, 1st Department of Pediatrics, Hippokratio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Nikoleta Printza
- Pediatric Nephrology Unit, 1st Department of Pediatrics, Hippokratio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
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18
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Hong JY, Lee JS, Woo HW, Om AS, Kwock CK, Kim MK. Meta-analysis of randomized controlled trials on calcium supplements and dairy products for changes in body weight and obesity indices. Int J Food Sci Nutr 2020; 72:615-631. [PMID: 33292017 DOI: 10.1080/09637486.2020.1856794] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This meta-analysis was performed to investigate whether calcium supplements and dairy products change obesity indices including fat mass. Original articles published in English between July 2009 and August 2019 were identified. Ten and 14 randomised controlled trials (RCTs) with ≥ 12 weeks interventions of calcium supplements and dairy products among overweight or obese adults aged ≥18 were critically reviewed. Mean difference (MD) or standardised mean difference (SMD) with 95% confidence interval (CI) were obtained using a random effect meta-analysis. Dairy products significantly changed fat mass (SMD, 95% CI; -0.40 [-0.77, -0.02]) and BMI (MD, 95% CI: -0.46 kg/m2 [-0.67, -0.26]), and calcium supplements also showed changes in fat mass (SMD, 95% CI; -0.15[-0.28, -0.02]). However, in the analysis of RCTs with low risk of bias scores, the significant changes remained only in the dairy-products intervention. Our findings suggest that dairy products without distinction of fat percentage may help reduce fat mass and BMI, but calcium supplements may not.
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Affiliation(s)
- Jee Yeon Hong
- Department of Preventive Medicine, College of Medicine, Hanyang University, Seoul, Korea.,Institute for Health and Society, Hanyang University, Seoul, Korea.,Department of Food and Nutrition, College of Human Ecology, Hanyang University, Seoul, Korea
| | - Ji Seon Lee
- Department of Preventive Medicine, College of Medicine, Hanyang University, Seoul, Korea.,Institute for Health and Society, Hanyang University, Seoul, Korea
| | - Hye Won Woo
- Department of Preventive Medicine, College of Medicine, Hanyang University, Seoul, Korea.,Institute for Health and Society, Hanyang University, Seoul, Korea
| | - Ae Son Om
- Department of Food and Nutrition, College of Human Ecology, Hanyang University, Seoul, Korea
| | | | - Mi Kyung Kim
- Department of Preventive Medicine, College of Medicine, Hanyang University, Seoul, Korea.,Institute for Health and Society, Hanyang University, Seoul, Korea
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19
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Jonasson TH, Costa TMDRL, Petterle RR, Moreira CA, Borba VZC. Body composition in nonobese individuals according to vitamin D level. PLoS One 2020; 15:e0241858. [PMID: 33166333 PMCID: PMC7652291 DOI: 10.1371/journal.pone.0241858] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 10/22/2020] [Indexed: 02/07/2023] Open
Abstract
Obesity is associated with lower 25-hydroxyvitamin D (25OHD) levels, but the association between 25OHD deficiency and specific body composition (BC) patterns remains unclear. The aim of this study was to analyze the correlation between 25OHD levels and BC in a population of healthy, nonobese individuals. Cross-sectional, observational study including a convenience sample of community-dwelling healthy individuals aged ≥18 years who responded to a study advertisement and were randomly selected. The participants filled out a questionnaire and had fasting blood drawn and anthropometric indices taken. Dual-energy x-ray absorptiometry was performed for BC analysis (fat and lean body mass). The subjects were divided according to 25OHD levels into three groups: I (≤20 ng/mL, vitamin D deficient), II (>20 and <30 ng/mL, vitamin D insufficient), and III (≥30 ng/mL, vitamin D sufficient). Of 299 individuals selected, 51 were excluded, yielding a final sample of 248 (128 women) who had serum 25OHD levels measured. Women presented higher 25OHD levels than men (27.8±12.0 ng/mL and 24.8±11.3 ng/mL, respectively; p = 0.03). Including both sexes, Group I had greater body mass index (BMI; 26.6±2.5 kg/m2) and waist circumference (WC; 91.8.8±9.1 cm) compared with the other groups. Group I also had 75.7% and 65.3% of abnormal BMI and WC values, respectively, (p<0.05 for both) and a higher percentage of trunk and android fat confirmed by multivariate analysis. No differences in BC were observed in individuals with insufficient versus sufficient 25OHD levels. Individuals with lower 25OHD levels had increased fat in the android region and trunk. This study confirms the association of lower 25OHD levels with greater BMI and WC and increased deposition of fat in body compartments, which, even in nonobese individuals, are commonly associated with increased metabolic risk.
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Affiliation(s)
- Thaísa Hoffmann Jonasson
- Serviço de Endocrinologia e Metabologia, Hospital de Clínicas da Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | | | | | - Carolina Aguiar Moreira
- Serviço de Endocrinologia e Metabologia, Hospital de Clínicas da Universidade Federal do Paraná, Curitiba, Paraná, Brazil
- Universidade Federal do Paraná, Setor de Ciências da Saúde, Curitiba, Paraná, Brazil
| | - Victória Zeghbi Cochenski Borba
- Serviço de Endocrinologia e Metabologia, Hospital de Clínicas da Universidade Federal do Paraná, Curitiba, Paraná, Brazil
- Universidade Federal do Paraná, Setor de Ciências da Saúde, Curitiba, Paraná, Brazil
- * E-mail:
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20
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The Molecular Mechanisms by Which Vitamin D Prevents Insulin Resistance and Associated Disorders. Int J Mol Sci 2020; 21:ijms21186644. [PMID: 32932777 PMCID: PMC7554927 DOI: 10.3390/ijms21186644] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 09/07/2020] [Accepted: 09/09/2020] [Indexed: 02/06/2023] Open
Abstract
Numerous studies have shown that vitamin D deficiency is very common in modern societies and is perceived as an important risk factor in the development of insulin resistance and related diseases such as obesity and type 2 diabetes (T2DM). While it is generally accepted that vitamin D is a regulator of bone homeostasis, its ability to counteract insulin resistance is subject to debate. The goal of this communication is to review the molecular mechanism by which vitamin D reduces insulin resistance and related complications. The university library, PUBMED, and Google Scholar were searched to find relevant studies to be summarized in this review article. Insulin resistance is accompanied by chronic hyperglycaemia and inflammation. Recent studies have shown that vitamin D exhibits indirect antioxidative properties and participates in the maintenance of normal resting ROS level. Appealingly, vitamin D reduces inflammation and regulates Ca2+ level in many cell types. Therefore, the beneficial actions of vitamin D include diminished insulin resistance which is observed as an improvement of glucose and lipid metabolism in insulin-sensitive tissues.
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21
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Duan L, Han L, Liu Q, Zhao Y, Wang L, Wang Y. Effects of Vitamin D Supplementation on General and Central Obesity: Results from 20 Randomized Controlled Trials Involving Apparently Healthy Populations. ANNALS OF NUTRITION AND METABOLISM 2020; 76:153-164. [DOI: 10.1159/000507418] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 03/21/2020] [Indexed: 11/19/2022]
Abstract
Background: The obesity pandemic has been paralleled by a high prevalence of vitamin D deficiency (VDD). There is growing epidemiological evidence linking low vitamin D status with obesity events. In addition, observational studies also show that obesity may increase the risk of VDD. However, there is insufficient knowledge to understand whether there is a causality between the two. Moreover, the impact of vitamin D supplementation on obesity indices has shown inconsistent outcomes. Objective: This meta-analysis aimed to assess whether vitamin D supplementation modified general and central obesity indices in apparently healthy populations. Methods: A systematic retrieval of relevant randomized controlled trials (RCTs) was undertaken using Pubmed, Embase, Web of Knowledge and Chinese National Knowledge Infrastructure databases. The pooled weighted mean difference (WMD) and 95% confidence intervals (CI) were used to assess the changes in body mass index (BMI), waist circumference (WC), waist-to-hip ratio (WHR) and 25-hydroxyvitamin D (25[OH]D) from baseline. Results: Twenty RCTs involving 3,153 participants reporting either BMI, WC, WHR or 25(OH)D met the inclusion criteria. When compared with placebo, vitamin D supplementation had no significant decreases in BMI (WMD = –0.09 kg/m2, 95% CI –0.19 to 0.01, p = 0.08), WC (WMD = –0.71 cm, 95% CI –1.58 to 0.16, p = 0.112) or WHR (WMD = 0.00, 95% CI –0.01 to 0.01, p = 0.749). However, in the subgroups of females, Asia region studies and intervention duration ≥6 months, a beneficial and significant reduction in BMI and WC was noted (all p < 0.026). On the other hand, pooled results showed that there was a significant increase in serum 25(OH)D levels (WMD = 13.20 ng/mL, 95% CI 9.83–16.58, p < 0.001) after vitamin D intervention. No publication bias was found in our study. Conclusions: Overall, supplementation with vitamin D produced no significant effect on the BMI, WC or WHR of healthy adults.
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Jiang S, Ma X, Li M, Yan S, Zhao H, Pan Y, Wang C, Yao Y, Jin L, Li B. Association between dietary mineral nutrient intake, body mass index, and waist circumference in U.S. adults using quantile regression analysis NHANES 2007-2014. PeerJ 2020; 8:e9127. [PMID: 32411541 PMCID: PMC7204818 DOI: 10.7717/peerj.9127] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 04/14/2020] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE Mineral nutrients play an important role in maintaining material and energy metabolism. Reports on mineral nutrient intakes and body mass index (BMI) and waist circumference (WC) are rare in the United States. This study examined the relationship between BMI, WC and dietary mineral intakes. METHOD We used the data from National Health and Nutrition Examination Survey 2007-2014. Nutrient intakes were adjusted for energy according to the residual adjustment method. We used the quantile regression model to analyze the relationship between BMI, WC under different distributions and the average daily mineral intakes. RESULT A total of 19,952 people were included in the study, including 9,879 men and 10,073 women (≥20 years old). The median BMI was 27.935 kg/m2 and the median WC was 97.700 cm. The results of quantile regression showed that calcium, magnesium, potassium, copper, zinc and iron intakes were negatively correlated with BMI and WC, after adjusting for age and gender. Sodium and phosphorus intakes were positively correlated with BMI, sodium intakes were positively correlated with WC. This correlation was enhanced with increasing quantiles of risk levels. In high BMI or high WC populations, mineral intakes had a greater impact on BMI and WC. The quantile regression coefficients of selenium intakes were not statistically significant at each quantile. CONCLUSION Our results suggested that the mineral nutrient intakes were associated with BMI and WC in American adults. However, we also need to further study the longitudinal effects of mineral intakes and obesity.
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Affiliation(s)
- Shan Jiang
- Department of Epidemiology and Biostatistics, Jilin University School of Public Health, Changchun, Jilin, People’s Republic of China
| | - Xiaoyu Ma
- Department of Epidemiology and Biostatistics, Jilin University School of Public Health, Changchun, Jilin, People’s Republic of China
| | - Meng Li
- Department of Epidemiology and Biostatistics, Jilin University School of Public Health, Changchun, Jilin, People’s Republic of China
| | - Shoumeng Yan
- Department of Epidemiology and Biostatistics, Jilin University School of Public Health, Changchun, Jilin, People’s Republic of China
| | - Hantong Zhao
- Department of Epidemiology and Biostatistics, Jilin University School of Public Health, Changchun, Jilin, People’s Republic of China
| | - Yingan Pan
- Department of Epidemiology and Biostatistics, Jilin University School of Public Health, Changchun, Jilin, People’s Republic of China
| | - Changcong Wang
- Department of Epidemiology and Biostatistics, Jilin University School of Public Health, Changchun, Jilin, People’s Republic of China
| | - Yan Yao
- Department of Epidemiology and Biostatistics, Jilin University School of Public Health, Changchun, Jilin, People’s Republic of China
| | - Lina Jin
- Department of Epidemiology and Biostatistics, Jilin University School of Public Health, Changchun, Jilin, People’s Republic of China
| | - Bo Li
- Department of Epidemiology and Biostatistics, Jilin University School of Public Health, Changchun, Jilin, People’s Republic of China
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23
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Morvaridzadeh M, Sepidarkish M, Fazelian S, Rahimlou M, Omidi A, Ardehali SH, Sanoobar M, Heshmati J. Effect of Calcium and Vitamin D Co-supplementation on Blood Pressure: A Systematic Review and Meta-Analysis. Clin Ther 2020; 42:e45-e63. [PMID: 32067744 DOI: 10.1016/j.clinthera.2020.01.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 01/06/2020] [Indexed: 12/11/2022]
Abstract
PURPOSE Vitamin D and calcium insufficiency has been related to elevated blood pressure (BP) and cardiovascular complications. This systematic review and meta-analysis investigates the effect of calcium and vitamin D co-supplementation on BP. METHODS A systematic search was conducted of electronic databases, including Web of Sciences, MEDLINE, Scopus, EMBASE, and the Cochrane Library, along with searches of gray literature and reference lists from included trials. There were no language restrictions, and the databases were searched from inception to October 2019. Randomized controlled trials, using calcium and vitamin D co-supplementation and reporting mean systolic BP and/or diastolic BP (DBP) with SDs, were included in the systematic review. Articles were evaluated independently by 2 researchers based on inclusion and exclusion criteria. A random effects model was conducted to synthesize the data. FINDINGS Eight trials were included in the meta-analysis. Meta-analysis of these 8 trials indicated a nonsignificant reduction in systolic BP in the calcium and vitamin D co-supplementation group compared with control (standardized mean difference, -0.23; 95% CI, -0.52 to 0.06). Conversely, there was a statistically significant decrease in DBP (standardized mean difference, -0.29; 95% CI, -0.55 to -0.02). Subgroup analysis suggested that young adults achieve a greater reduction in DBP than other age groups. IMPLICATIONS Calcium and vitamin D co-supplementation can modulate DBP and should be investigated more specifically in large, well-designed trials of hypertensive populations. (Clin Ther. 2020;42:XXX-XXX) © 2020 Elsevier HS Journals, Inc.
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Affiliation(s)
- Mojgan Morvaridzadeh
- Department of Nutritional Science, School of Nutritional Science and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mahdi Sepidarkish
- Department of Biostatistics and Epidemiology, School of Public Health, Babol University of Medical Sciences, Babol, Iran
| | - Siavash Fazelian
- Clinical Research Development Unit, Ayatollah Kashani Hospital, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Mehran Rahimlou
- Nutrition Department, Faculty of Paramedicine, Ahvaz Jundishapour University of Medical Sciences, Ahvaz, Iran
| | - Amirhossein Omidi
- Department of Nutritional Science, School of Nutritional Science and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Seyed Hossein Ardehali
- Department of Anesthesiology and Critical Care, Shohadaye Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Meisam Sanoobar
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Javad Heshmati
- Department of Nutritional Science, School of Nutritional Science and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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24
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Zhang D, Cheng C, Wang Y, Sun H, Yu S, Xue Y, Liu Y, Li W, Li X. Effect of Vitamin D on Blood Pressure and Hypertension in the General Population: An Update Meta-Analysis of Cohort Studies and Randomized Controlled Trials. Prev Chronic Dis 2020; 17:E03. [PMID: 31922371 PMCID: PMC6977781 DOI: 10.5888/pcd17.190307] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background The effect of vitamin D supplementation on blood pressure has been explored in previous meta-analyses, but whether the association is causal in the general population is still unknown. We evaluated the association comprehensively and quantitatively. Methods We searched PubMed and Embase for relevant cohort studies and randomized controlled trials (RCTs). We used a 2-step generalized least-squares method to assess the dose–response association of circulating 25-hydroxyvitamin D (25[OH]D) and hypertension and a fixed-effects model to pool the weighted mean differences (WMDs) and corresponding 95% confidence intervals (95% CIs) of blood pressure across RCTs. Results We identified 11 cohort studies and 27 RCTs, with 43,320 and 3,810 participants, respectively. The dose–response relationship between circulating 25(OH)D levels and hypertension risk was approximately L-shaped (Pnonlinearity = .04), suggesting that the risk of hypertension increased substantially below 75 nmol/L as 25(OH)D decreased, but it remained significant over the range of 75–130 nmol/L. However, pooled results of RCTs showed that there was no significant reduction in systolic blood pressure (WMD, −0.00 mm Hg; 95% CI, −0.71 to 0.71) or diastolic blood pressure (WMD, 0.19 mm Hg; 95% CI, −0.29 to 0.67) after vitamin D intervention. Conclusions The results of this meta-analysis indicate that supplementation with vitamin D does not lower blood pressure in the general population. RCTs with long-term interventions and a sufficient number of participants who have low levels of vitamin D are needed to validate these findings.
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Affiliation(s)
- Dongdong Zhang
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Henan, China
| | - Cheng Cheng
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Henan, China
| | - Yan Wang
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Henan, China
| | - Hualei Sun
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Henan, China
| | - Songcheng Yu
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Henan, China
| | - Yuan Xue
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Henan, China
| | - Yiming Liu
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Henan, China
| | - Wenjie Li
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, 100 Kexue Ave, Zhengzhou, 450001 Henan, China.
| | - Xing Li
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Henan, China
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25
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Aliashrafi S, Ebrahimi-Mameghani M, Jafarabadi MA, Lotfi-Dizaji L, Vaghef-Mehrabany E, Arefhosseini SR. Effect of high-dose vitamin D supplementation in combination with weight loss diet on glucose homeostasis, insulin resistance, and matrix metalloproteinases in obese subjects with vitamin D deficiency: a double-blind, placebo-controlled, randomized clinical trial. Appl Physiol Nutr Metab 2019; 45:1092-1098. [PMID: 31874050 DOI: 10.1139/apnm-2018-0773] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
As there is limited and inconsistent evidence in potential role of vitamin D on insulin resistance and matrix metalloproteinases, this study aimed to examine the effect of vitamin D supplementation on glucose homeostasis, insulin resistance, and matrix metalloproteinases in obese subjects with vitamin D deficiency. A total of 44 participants with serum 25-hydroxyvitamin D (25(OH)D) level ≤ 50 nmol/L and body mass index (BMI) 30-40 kg/m2 were randomly allocated into receiving weight reduction diet with either 50 000 IU vitamin D3 pearl (n = 22) or placebo (n = 22) once weekly for 12 weeks. Primary outcomes were changes in fasting serum glucose (FSG), homeostasis model assessment of insulin resistance (HOMA-IR), quantitative insulin sensitivity check index (QUICKI), and matrix metalloproteinases (MMPs). Secondary outcomes were changes in weight, BMI, 25(OH)D, calcium, phosphorous and parathyroid hormone (PTH). Sun exposure and dietary intakes were also assessed. Serum levels of 25(OH)D3 increased significantly with a simultaneous decrease in serum concentration of PTH in the vitamin D group. Weight, BMI, FSG, and MMP-9 decreased significantly in both groups, and there were significant differences in changes in weight, serum 25(OH)D3, PTH, and MMP-9 levels between the groups. Within- and between-groups analysis revealed no significant differences in serum calcium, phosphorous, serum insulin, HOMA-IR, QUICKI, and MMP-2 after intervention. Our results indicated that improvement in vitamin D status resulted in greater reductions in weight and MMP-9 during weight loss. These preliminary results are sufficient to warrant a bigger study group.
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Affiliation(s)
- Soodabeh Aliashrafi
- Student Research Committee, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehrangiz Ebrahimi-Mameghani
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical science, Tabriz, Iran
| | | | - Lida Lotfi-Dizaji
- Student Research Committee, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elnaz Vaghef-Mehrabany
- Student Research Committee, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyed-Rafie Arefhosseini
- Nutritional Biochemistry, School of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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26
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Ozato N, Saito S, Yamaguchi T, Katashima M, Tokuda I, Sawada K, Katsuragi Y, Imoto S, Ihara K, Nakaji S. Association between Nutrients and Visceral Fat in Healthy Japanese Adults: A 2-Year Longitudinal Study Brief Title: Micronutrients Associated with Visceral Fat Accumulation. Nutrients 2019; 11:nu11112698. [PMID: 31703461 PMCID: PMC6893766 DOI: 10.3390/nu11112698] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/01/2019] [Accepted: 11/05/2019] [Indexed: 01/25/2023] Open
Abstract
High visceral fat area (VFA) is a stronger predictor of cardiovascular disease and overall mortality than body mass index or waist circumference. VFA may be decreased by proper dietary habits. Although previous epidemiologic studies demonstrated an association between nutritional components or foodstuffs and VFA, only the associations of a few nutrients, such as dietary fiber and calcium, are reported. We performed a comprehensive 2-year longitudinal study in more than 624 healthy people and analyzed 33 micronutrients to investigate nutrients that contribute to changes in visceral fat. Our analyses revealed that “macronutrients” and “micronutrients” were “mutual confounders”. Therefore, when evaluating the association between VFA and micronutrients, associations were adjusted by macronutrients. The ingestion of 7 nutrients: soluble dietary fiber, manganese, potassium, magnesium, vitamin K, folic acid, and pantothenic acid, which are abundant components in vegetable diets, was significantly inversely correlated with a change in VFA. Additionally, a change in the ingestion of one nutrient, monounsaturated fat, was significantly positively correlated with a change in VFA. These associations were independent of body mass index and waist circumference. Thus, a predominantly vegetable diet may decrease VFA. In addition, adjusting the intake of macronutrients might help to clarify the association of micronutrients with VFA.
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Affiliation(s)
- Naoki Ozato
- Department of Active Life Promotion Sciences, Graduate School of Medicine, Hirosaki University, Hirosaki 0368562, Japan; (M.K.); (Y.K.)
- Health Care Food Research Laboratories, Kao Corporation, Tokyo 1318501, Japan;
- Correspondence: ; Tel.: +81-(0)-17-239-5041
| | - Shinichiro Saito
- Biological Science Research Laboratories, Kao Corporation, Tokyo 1318501, Japan;
| | - Tohru Yamaguchi
- Health Care Food Research Laboratories, Kao Corporation, Tokyo 1318501, Japan;
| | - Mitsuhiro Katashima
- Department of Active Life Promotion Sciences, Graduate School of Medicine, Hirosaki University, Hirosaki 0368562, Japan; (M.K.); (Y.K.)
- Health Care Food Research Laboratories, Kao Corporation, Tokyo 1318501, Japan;
| | - Itoyo Tokuda
- Department of Social Medicine, Graduate School of Medicine, Hirosaki University, Hirosaki 0368562, Japan; (I.T.); (K.S.); (K.I.); (S.N.)
| | - Kaori Sawada
- Department of Social Medicine, Graduate School of Medicine, Hirosaki University, Hirosaki 0368562, Japan; (I.T.); (K.S.); (K.I.); (S.N.)
| | - Yoshihisa Katsuragi
- Department of Active Life Promotion Sciences, Graduate School of Medicine, Hirosaki University, Hirosaki 0368562, Japan; (M.K.); (Y.K.)
- Health Care Food Research Laboratories, Kao Corporation, Tokyo 1318501, Japan;
| | - Seiya Imoto
- Health Intelligence Center, Institute of Medical Science, University of Tokyo, Tokyo 1088639, Japan;
| | - Kazushige Ihara
- Department of Social Medicine, Graduate School of Medicine, Hirosaki University, Hirosaki 0368562, Japan; (I.T.); (K.S.); (K.I.); (S.N.)
| | - Shigeyuki Nakaji
- Department of Social Medicine, Graduate School of Medicine, Hirosaki University, Hirosaki 0368562, Japan; (I.T.); (K.S.); (K.I.); (S.N.)
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27
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Imanparast F, Javaheri J, Kamankesh F, Rafiei F, Salehi A, Mollaaliakbari Z, Rezaei F, Rahimi A, Abbasi E. The effects of chromium and vitamin D 3 co-supplementation on insulin resistance and tumor necrosis factor-alpha in type 2 diabetes: a randomized placebo-controlled trial. Appl Physiol Nutr Metab 2019; 45:471-477. [PMID: 31593637 DOI: 10.1139/apnm-2019-0113] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The current study was conducted to assess the effects of simultaneous usage with vitamin D3 and chromium picolinate (CrPic) supplementations on homeostasis model assessment of insulin resistance (HOMA-IR), fasting blood glucose (FBS), hemoglobin A1c (HbA1c), tumor necrosis factor-α (TNF-α), and lipid profile in type 2 diabetes mellitus (T2DM). Ninety-two patients with T2DM were randomly allocated to the following 4 groups for 4 months: (I) placebo of vitamin D3 (n = 23); (II) vitamin D3 supplement at a dose of 50 000 IU/week (n = 23); (III) CrPic supplement at a dose of 500 μg/day (n = 23); and (IV) both vitamin D3 at a dose of 50 000 IU/week and CrPic at a dose of 500 μg/day (n = 23). HOMA-IR levels increased significantly in groups I and II after the intervention. However, this increase in group I was significantly higher than that in group II after the treatment. HOMA-IR levels were controlled in groups III and IV during the intervention. TNF-α decreased significantly in groups II, III, and IV after the intervention. FBS, HbA1c, and lipid profile did not change significantly in total groups after the intervention. It seems that chromium and vitamin D3 co-supplementation are probably effective in controlling HOMA-IR by decreasing TNF-α in T2DM. Novelty Chromium alone and/or in simultaneous pretreatment with vitamin D3 is more effective than vitamin D3 in controlling HOMA-IR in T2DM. Chromium and vitamin D3 alone and/or in simultaneous pretreatment decrease TNF-α in T2DM.
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Affiliation(s)
- Fatemeh Imanparast
- Department of Laboratory Sciences, Khomein University of Medical Sciences, Khomein, Iran.,Traditional and Complementary Medicine Research Center, Arak University of Medical Sciences, Arak, Iran
| | - Javad Javaheri
- Arak Community and Preventive Medicine Specialist, Community Medicine Group, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran
| | - Fatemeh Kamankesh
- Department of Laboratory Sciences, Khomein University of Medical Sciences, Khomein, Iran
| | - Fatemeh Rafiei
- Department of Biostatistics and Epidemiology, School of Health, Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Ashraf Salehi
- Department of Nursing Education, Khomein University of Medical Sciences, Khomein, Iran
| | - Zeinab Mollaaliakbari
- Department of Laboratory Sciences, Khomein University of Medical Sciences, Khomein, Iran
| | - Fatemeh Rezaei
- Department of Laboratory Sciences, Khomein University of Medical Sciences, Khomein, Iran
| | | | - Elnaz Abbasi
- Department of Microbiology & Immunology, Khomein University of Medical Sciences, Khomein, Iran
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28
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Gerveieeha Z, Siassi F, Qorbani M, Ziaeian F, Sotoudeh G. The effect of different amounts of vitamin D supplementation on serum calcidiol, anthropometric status, and body composition in overweight or obese nursing women: a study protocol for a randomized placebo-controlled clinical trial. Trials 2019; 20:542. [PMID: 31470899 PMCID: PMC6716881 DOI: 10.1186/s13063-019-3622-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 07/30/2019] [Indexed: 11/23/2022] Open
Abstract
Background The optimal vitamin D intake for nursing mothers with overweight or obesity has not been defined. Vitamin D concentrations are associated with body composition indices, particularly body fat mass. Few studies have investigated the relationship between hypovitaminosis D, obesity, anthropometric status, and body composition in nursing women. Thus, the present study aims to investigate whether vitamin D supplementation during lactation will improve vitamin D status, reduce body fat mass, and improve body composition. Methods/design In a double-blind, randomized, placebo-controlled, parallel-group trial, after term delivery, 90 healthy women with overweight or obesity will be selected and randomly allocated into three groups to receive 2000 IU/d cholecalciferol (vitamin D3), 4000 IU/d cholecalciferol, or placebo (lactose) for 12 weeks while nursing. Measurements of height, weight, waist circumference, and body composition (fat mass (kg), lean mass (kg), body fat (%), fat mass index, and relative fat mass index) will be taken for all subjects at baseline and after 12 weeks of intervention. In addition, serum 25-hydroxyvitamin D (25(OH)D), parathyroid hormone, calcium, and phosphorus will be measured. Discussion This study is the first investigating the effect of different amounts of vitamin D supplementation on serum calcidiol, anthropometric status, and body composition in nursing women with overweight or obesity. Our findings will contribute to the growing body of knowledge regarding the role of vitamin D supplementation in obesity, anthropometric status, and body composition in nursing women. Trial registration Iranian Registry of Clinical Trials IRCT20140413017254N6. Registered on 11 April 2018. Electronic supplementary material The online version of this article (10.1186/s13063-019-3622-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Zohre Gerveieeha
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Hojatdost street, Naderi street, Keshavarz Blvd, Tehran, Iran
| | - Fereydoun Siassi
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Hojatdost street, Naderi street, Keshavarz Blvd, Tehran, Iran.
| | - Mostafa Qorbani
- Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran.,Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Farzaneh Ziaeian
- Department of Health Science in Nutrition, Islamic Azad University Science and Research Branch of Tehran, Tehran, Iran
| | - Gity Sotoudeh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Hojatdost street, Naderi street, Keshavarz Blvd, Tehran, Iran.
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29
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Valer-Martinez A, Martinez JA, Sayon-Orea C, Galvano F, Grosso G, Bes-Rastrollo M. Vitamin D and Cardio-Metabolic Risk Factors in Overweight Adults: An Overview of the Evidence. Curr Pharm Des 2019; 25:2407-2420. [PMID: 31333117 DOI: 10.2174/1381612825666190722103919] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 07/20/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Several studies have suggested a potential association between low vitamin D serum levels and several pathological conditions apart from the well-known bone disorders. Thus, vitamin D insufficiency has been linked to cardiometabolic risk factors including obesity, insulin resistance, hypertension, dyslipidemia, as well as type 2 diabetes and cardiovascular disease. OBJECTIVE This review intends to provide an overview of recent evidence from clinical studies on vitamin D [25- hydroxyvitamin D (25(OH)D)] and cardiometabolic risk factors in overweight adults. Furthermore, we also discussed potential mechanisms and limits of the retrieved results. METHODS The search process was based on the selection of publications (RCT) listed in PubMed and Cochrane Library databases. RESULTS Vitamin D status evidenced an inversely strong association with subcutaneous adipose tissue and visceral adiposity, but not significantly related to other bodyweight measures (i.e., body mass index). Studies have shown a potential inverse association of hypovitaminosis D with insulin resistance and cardiovascular risk factors. CONCLUSION The mechanisms by which vitamin D deficiency enhances adiposity, as well as putative association with metabolic syndrome features, remain still unclear. Further investigation would be required to conclude whether vitamin D has an independent role in preventing cardiometabolic disorders.
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Affiliation(s)
- Ana Valer-Martinez
- Department of Preventive Medicine and Public Health, University of Navarra, Pamplona, Spain.,Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | - J Alfredo Martinez
- Department of Nutrition, Food Science and Physiology/Centre for Nutrition Research, University of Navarra, Pamplona, Spain.,CIBERobn, Instituto de Salud Carlos III, Madrid, Spain.,IdiSNa, Navarra Institute for Health Research, Pamplona, Spain.,Institute IMDEA Food, Madrid, Spain
| | - Carmen Sayon-Orea
- Department of Preventive Medicine and Public Health, University of Navarra, Pamplona, Spain.,Department of Preventive Medicine, Complejo Hospitalario de Navarra, Pamplona, Spain
| | - Fabio Galvano
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Giuseppe Grosso
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Maira Bes-Rastrollo
- Department of Preventive Medicine and Public Health, University of Navarra, Pamplona, Spain.,CIBERobn, Instituto de Salud Carlos III, Madrid, Spain.,IdiSNa, Navarra Institute for Health Research, Pamplona, Spain
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30
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Is Vitamin D Supplementation Useful for Weight Loss Programs? A Systematic Review and Meta-Analysis of Randomized Controlled Trials. ACTA ACUST UNITED AC 2019; 55:medicina55070368. [PMID: 31336940 PMCID: PMC6681300 DOI: 10.3390/medicina55070368] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 07/10/2019] [Accepted: 07/10/2019] [Indexed: 12/15/2022]
Abstract
Background and Objectives: The controversy about the impact of vitamin D supplementation on weight loss treatment was observed in several randomized controlled trials (RCTs). This meta-analysis investigates the effects of vitamin D supplementation (cholecalciferol or ergocalciferol) on weight loss through holistic measurements of Body Mass Index (BMI), weight and waist circumference. Materials and Methods: Google Scholar, WOS, PubMed and Scopus were explored to collect relevant studies. The selected articles focused on vitamin D supplementation in overweight and obese individuals with different conditions. Eleven RCTs were included into this meta-analysis with a total of 947 subjects, with a mean of the follow-up from 1 to 12 months and different vitamin D interventions (from 25,000 to 600,000 IU/monthly of cholecalciferol). Results: The meta-analyzed mean differences for random effects showed that cholecalciferol supplementation deceases the BMI by -0.32 kg/m2 (CI95% -0.52, -0.12 kg/m2, p = 0.002) and the waist circumference by -1.42 cm (CI95% -2.41, -0.42 cm, p = 0.005), but does not statistically affect weight loss -0.43 kg (CI95% -1.05, +0.19 kg, p = 0.17). Conclusions: This meta-analysis lays the foundation for defining the potential clinical efficacy of vitamin D supplementation as a potential therapeutic option for weight loss programs, but further studies are needed to confirm the validity of these findings and delineate potential underlying mechanisms.
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31
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Greco EA, Lenzi A, Migliaccio S. Role of Hypovitaminosis D in the Pathogenesis of Obesity-Induced Insulin Resistance. Nutrients 2019; 11:nu11071506. [PMID: 31266190 PMCID: PMC6682882 DOI: 10.3390/nu11071506] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 12/13/2022] Open
Abstract
Obesity and type 2 diabetes have both rapidly increased during the last decades and are continuing to increase at an alarming rate worldwide. Obesity and impaired glucose homeostasis are closely related, and during the last decades of investigation about vitamin D, several clinical and epidemiological studies documented an inverse correlation between circulating vitamin D levels, central adiposity and the development of insulin resistance and diabetes. The insufficient sun exposure and outdoor activities of obese individuals, the storage of vitamin D in adipose tissue, because of its lipophilic properties, and the vitamin D-mediated modulation of adipogenesis, insulin secretion, insulin sensitivity and the immune system, are the main reasons for the close relationship between obesity, glucose homeostasis and hypovitaminosis D. Then objective of this review is to explore the pathophysiological mechanism(s) by which vitamin D modulates glycemic control and insulin sensitivity in obese individuals.
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Affiliation(s)
- Emanuela A Greco
- Department of Experimental Medicine, Section of Physiopathology, Endocrinology and Food Science, University of Rome Sapienza, 00161 Rome, Italy
| | - Andrea Lenzi
- Department of Experimental Medicine, Section of Physiopathology, Endocrinology and Food Science, University of Rome Sapienza, 00161 Rome, Italy
| | - Silvia Migliaccio
- Department of Movement, Human and Health Sciences, Section of Health Science, University of Rome Foro Italico, 00135 Rome, Italy.
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Role of Calcium and Low-Fat Dairy Foods in Weight-Loss Outcomes Revisited: Results from the Randomized Trial of Effects on Bone and Body Composition in Overweight/Obese Postmenopausal Women. Nutrients 2019; 11:nu11051157. [PMID: 31126121 PMCID: PMC6566640 DOI: 10.3390/nu11051157] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/09/2019] [Accepted: 05/20/2019] [Indexed: 02/08/2023] Open
Abstract
Several studies have investigated the possibility of dairy foods and calcium (Ca) mediating weight and body composition, but a consensus has not been reached. We aimed to investigate weight-loss-related outcomes during intervention with low-fat dairy foods or Ca + vitamin D supplements, both as complements to hypocaloric diets. Overweight/obese Caucasian, early-postmenopausal women (n = 135) were recruited for a 6 month energy-restricted weight loss study complemented with either low-fat dairy foods (D; 4–5 servings/day), or Ca + vitamin D supplements (S); both to amount a total of ~1500 mg/day and 600 IU/day of Ca and vitamin D, respectively, or placebo pills (C). Bone mineral density (BMD) and lean and fat tissue were measured by Lunar iDXA. Serum and urinary markers of bone turnover were analyzed. Diet and physical activity were assessed with 3-day records. Participants on average lost ~4%, ~3%, and ~2% of body weight, fat, and lean tissue, respectively. The significantly better outcomes were noticed in participants in the D group regarding body composition (fat loss/lean tissue preservation) and in participants in the S group regarding the BMD outcomes, compared to those in the C group. Therefore, increasing low-fat dairy foods to 4–5 servings/day and/or increasing Ca & vitamin D intake by supplements (in those who are at the borderline dietary intake) may be beneficial for weight loss/maintenance and may lead to more favorable bone and body composition outcomes in postmenopausal women during moderate weight loss.
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Ma CM, Yin FZ. The relationship between hypertriglyceridemic-waist phenotype and vitamin D status in type 2 diabetes. Diabetes Metab Syndr Obes 2019; 12:537-543. [PMID: 31118717 PMCID: PMC6497916 DOI: 10.2147/dmso.s204062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 03/06/2019] [Indexed: 01/25/2023] Open
Abstract
Background: The aim of the study was to explore the relationship between hypertriglyceridemic-waist (HTW) phenotype and vitamin D status in type 2 diabetes. Methods: A cross-sectional study was conducted in subjects with type 2 diabetes. This study enrolled 338 type 2 diabetic (190 males and 148 females). The HTW phenotype was defined as serum triglyceride concentrations ≥1.7 mmol/L and waist circumference ≥90 cm (male) and 85 cm (female). Multiple logistic regression models were used for modeling relationships between HTW phenotype and vitamin D status. Results: The prevalence of HTW phenotype was 36.4%. The prevalence of HTW phenotype was 10.5%, 27.2%, and 41.6% in type 2 diabetes with vitamin D sufficiency, vitamin D insufficiency, and vitamin D deficiency, respectively. In multiple logistic regression analysis, subjects with vitamin D deficiency were more likely to have HTW phenotype (OR=6.222, 95%CI: 1.307-29.620, P=0.022) compared with subjects with vitamin D sufficiency. Conclusions: There was a significant correlation between HTW phenotype and vitamin D status in type 2 diabetes.
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Affiliation(s)
- Chun-Ming Ma
- Department of Endocrinology, The First Hospital of Qinhuangdao, Qinhuangdao066000, Hebei Province, People’s Republic of China
| | - Fu-Zai Yin
- Department of Endocrinology, The First Hospital of Qinhuangdao, Qinhuangdao066000, Hebei Province, People’s Republic of China
- Correspondence: Fu-Zai YinDepartment of Endocrinology, The First Hospital of Qinhuangdao, No. 258 Wenhua Road, Qinhuangdao066000, Hebei Province, People’s Republic of ChinaTel +86 335 590 8368Fax +86 335 303 2042Email
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Park JE, Pichiah PBT, Cha YS. Vitamin D and Metabolic Diseases: Growing Roles of Vitamin D. J Obes Metab Syndr 2018; 27:223-232. [PMID: 31089567 PMCID: PMC6513299 DOI: 10.7570/jomes.2018.27.4.223] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 11/15/2018] [Accepted: 12/01/2018] [Indexed: 01/10/2023] Open
Abstract
Vitamin D, a free sunshine vitamin available for mankind from nature, is capable to avert many health-related critical circumstances. Vitamin D is no more regarded as a nutrient involved in bone metabolism alone. The presence of vitamin D receptor in a number of tissues implies that vitamin D has various physiological roles apart from calcium and phosphorus metabolism. Low serum vitamin D has been found to be associated with various types of metabolic illness such as obesity, diabetes mellitus, insulin resistance, cardiovascular diseases including hypertension. Various studies reported that vitamin D insufficiency or deficiency in linked with metabolic syndrome risk. This review focuses on various metabolic diseases and its relationship with serum vitamin D status.
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Affiliation(s)
- Jung Eun Park
- Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju, Korea
| | - P B Tirupathi Pichiah
- Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju, Korea
| | - Youn-Soo Cha
- Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju, Korea
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Grain Amaranth Is Associated with Improved Hepatic and Renal Calcium Metabolism in Type 2 Diabetes Mellitus of Male Wistar Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:4098942. [PMID: 30420893 PMCID: PMC6211157 DOI: 10.1155/2018/4098942] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 09/20/2018] [Accepted: 10/02/2018] [Indexed: 12/14/2022]
Abstract
Background Dysregulation of calcium signaling is a hallmark of diabetes mellitus (DM) and grain amaranth (AG) has antidiabetic properties. Information on the mechanism of action of AG on blood, renal, and hepatic tissues is sparse, although it continues to be an important alternative medicinal plant in several developing countries. The objective of the study was to determine key changes in calcium levels and s100a1 protein levels and antioxidant and histopathologic changes in blood, renal, and hepatic tissues of male diabetic Wistar rats. Materials and Methods This was an experimental study in which 30 male Wistar rats were kept for 5 weeks (6 groups, N =5). Groups 1-IV had T2DM induced using Nicotinamide and Streptozotocin: Group I, Mixtard®; group II, positive control; group III, 25% AG; group IV, 50% AG. Furthermore, group V consisted of normal rats given 50% GA and group VI was negative control. Blood, renal, and hepatic tissues were collected and analyzed for calcium, s100a1 protein levels, and antioxidant and histopathological changes. Results and Discussion In blood, renal, and hepatic tissue, calcium and s100a1 levels were low during T2DM and these increased following AG supplementation. This was important for improved metabolic processes, thus leading to the low malondialdehyde (MDA) and glutathione peroxidase (GPx) activity in the tissues. Efficient antioxidant status was important for improved calcium signaling mechanisms, thus leading to improved tissue function and protection demonstrating the importance of AG as an alternative medicinal source through the calcium signaling pathway. Conclusion Grain amaranth exerts its antidiabetic properties through improved calcium homeostasis in blood, kidney, and liver.
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Albataineh SR, Badran EF, Tayyem RF. Dietary factors and their association with childhood obesity in the Middle East: A systematic review. Nutr Health 2018; 25:53-60. [PMID: 30282516 DOI: 10.1177/0260106018803243] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND: Childhood obesity is a global epidemic that is related to environmental and genetic factors and has adverse consequences throughout life, being obese is a serious health problem in childhood and increases the risk of many co-morbidities. AIM: The purpose of this systematic review is to illustrate that dietary factors correlate with obesity among children studied in the Middle East area. METHODS: Studies were screened by searching two databases in August 2017 and considered as eligible for inclusion if they: (a) are observational studies, (b) define at least one dietary factor for obese children aged 6-12 years, (c) are undertaken in the Middle East area, and (d) are written in English. The search dependent words and terms used are: diet, nutrition, pediatric obesity, physical activity, Middle East, overweight, children, excess weight, childhood, obesity and dietary factors. Papers were initially evaluated for eligibility based on title and abstract. The full text of articles of studies that met, or appeared to meet, the inclusion criteria, were saved. Quality assessment was conducted using the NIH tool for observational cohort and cross-sectional studies. Out of 730 studies, 4 papers met the inclusion criteria and rated as good quality. These studies were from Iran ( n=2), Saudi Arabia ( n=1) and Lebanon ( n=1) during 2008 and 2016. RESULTS: Dietary factors identified were breakfast intake, junk-food consumption, energy intake and micronutrient intake. The present systematic review shows that several dietary behaviors such as missing breakfast, excessive fat and refined carbohydrate intake with low micronutrient intake due to low consumption of fruits, vegetables and milk/diary, are associated with obesity in children in the Middle East. CONCLUSIONS: A healthy diet during childhood to control weight and prevent obesity is recommended for a healthy, lifelong adulthood.
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Affiliation(s)
- Samah R Albataineh
- 1 Department of Nutrition and Food Technology, The University of Jordan, Jordan
| | | | - Reema F Tayyem
- 1 Department of Nutrition and Food Technology, The University of Jordan, Jordan
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Mirhosseini N, Vatanparast H, Mazidi M, Kimball SM. Vitamin D Supplementation, Glycemic Control, and Insulin Resistance in Prediabetics: A Meta-Analysis. J Endocr Soc 2018; 2:687-709. [PMID: 29951596 PMCID: PMC6016617 DOI: 10.1210/js.2017-00472] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 05/22/2018] [Indexed: 12/15/2022] Open
Abstract
Diabetes prevention is a public health priority. Vitamin D supplementation may help prevent the development of diabetes in persons at increased risk. We performed a meta-analysis of controlled clinical trials that assessed glycemic outcome measures among adults at risk for type 2 diabetes, including prediabetes, overweight, or obesity. We searched PUBMED/ MEDLINE, CINAHL, and Google Scholar databases for trials published prior to April 2017. Placebo-controlled clinical trials with random allocation to vitamin D with or without calcium supplementation were selected. Data collection included country, study design, inclusion criteria, sample size, form, and dose of vitamin D, supplementation interval, control group, duration, participant characteristics, comorbidities, baseline and follow-up serum 25-hydroxyvitamin D [25(OH)D] concentration, and available outcome measures [glycosylated hemoglobin (HbA1c), fasting plasma glucose, plasma glucose after 2-hour oral glucose tolerance test, and homeostatic model assessment of insulin resistance (HOMA-IR)]. Data synthesis was conducted using random-effect models (PROSPERO registration no. CRD42017055326). Twenty-eight trials, representing 3848 participants, met the eligibility criteria. Compared with the control group, vitamin D supplementation significantly reduced HbA1c level by -0.48% (95% CI, -0.79 to -0.18), fasting plasma glucose level by -0.46 mmol/L (95% CI, -0.74 to -0.19), and HOMA-IR level by -0.39 (95% CI, -0.68 to -0.11). Subgroup analysis revealed that the effects of vitamin D supplementation on different glycemic measures were influenced by age, calcium coadministration, vitamin D deficiency, serum 25(OH)D level after supplementation, and duration of supplementation. Vitamin D supplementation and improved vitamin D status improved glycemic measures and insulin sensitivity and may be useful as part of a preventive strategy for type 2 diabetes.
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Affiliation(s)
| | - Hassanali Vatanparast
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Mohsen Mazidi
- Key State Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- Institute of Genetics and Developmental Biology, International College, University of Chinese Academy of Sciences, Beijing, China
| | - Samantha M Kimball
- Pure North S’Energy Foundation, Calgary, Alberta, Canada
- St. Mary’s University, Calgary, Alberta, Canada
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The effect of maternal vitamin D deficiency during pregnancy on body fat and adipogenesis in rat offspring. Sci Rep 2018; 8:365. [PMID: 29321608 PMCID: PMC5762667 DOI: 10.1038/s41598-017-18770-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 12/18/2017] [Indexed: 12/12/2022] Open
Abstract
To evaluate the effects of maternal vitamin D deficiency on body fat and adipogenesis in offspring rats, and explore the potential mechanism, we constructed a vitamin D deficient rat model and performed metabolic activity evaluation, body fat monitoring, biochemical analysis, adipogenesis assay, methylation microarray and RNA-seq for their offspring rats. We found the weight of vitamin D deficient (VDD) offspring was gradually higher than that of control (CLT) offspring, and the difference was significant since 10 weeks old. When compared with CTL offspring, the 24 h heat production, peak blood glucose, adipose tissue volume and blood lipid indexes were significantly increased in VDD offspring at 14 weeks old. Moreover, a significant increase in proliferation rate and number of lipid droplets for pre-adipocytes was also observed in VDD offspring group. DNA methylation profiling showed that compared to CTL group, 608 promoters and 204 CpG islands were differentially methylated in the VDD group, involving 305 genes. When combined with the results of RNA-seq, 141 genes of the methylated genes were differentially expressed. In conclusion, vitamin D deficiency during pregnancy may promote the proliferation and differentiation of pre-adipocytes, which may be associated with methylation alterations of genes, ultimately leading to offspring obesity.
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Farhangi MA, Mesgari-Abbasi M, Nameni G, Hajiluian G, Shahabi P. The effects of vitamin D administration on brain inflammatory markers in high fat diet induced obese rats. BMC Neurosci 2017; 18:81. [PMID: 29281967 PMCID: PMC5745807 DOI: 10.1186/s12868-017-0400-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 12/19/2017] [Indexed: 11/10/2022] Open
Abstract
Background Obesity induced brain inflammation is associated with cognitive disorders. We aimed to investigate the influence of vitamin D on hypothalamus and hippocampus inflammatory response in high-fat diet induced obese rats. Methods In the beginning of the study, 40 rats were divided into two groups: control diet and high fat diet (HFD) for 16 weeks; then each group subdivided into two groups including: N, ND + vitamin D, HFD and HFD + vitamin D. Vitamin D supplementation was done for 5 weeks at 500 IU/kg dosage. IL-6, IL-1β, NF-Kβ and acetylcholine (ACH) and brain derived neurotropic factor (BDNF) concentrations in hippocampus and hypothalamus homogenate samples were measured by commercial ELISA kits. Results Vitamin D administration, reduced food intake and weight gain in studied groups (P < 0.001). Vitamin D reduced hippocampus acetylcholine concentrations in ND + vitamin D group (P < 0.001). High fat diet increased hippocampus IL-6 concentrations significantly (P < 0.05) compared with normal diet receiving groups. Vitamin D could not have significant effects on IL-6 concentrations. Vitamin D administrations reduced IL-1β, NF-Kβ and acetylcholine concentration and BDNF concentrations in ND + vitamin D compared with ND group. These reductions were not significant in HFD + vitamin D versus HFD group. Conclusion According to our results, vitamin D reduced food intake and weight gain and modulated the HFD induced inflammatory response in hippocampus and hypothalamus of high fat diet induced obesity. Therefore, this neurosteroid, can be suggested as a supplemental therapeutic tool in prevention of obesity related cognitive and neurodegenerative problems.
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Affiliation(s)
- Mahdieh Abbasalizad Farhangi
- Drug Applied Research Center, Nutrition Research Center, Department of Community Nutrition, Tabriz University of Medical Sciences, Attar Neyshabouri Street, Tabriz, Iran.
| | - Mehran Mesgari-Abbasi
- Drug Applied Research Center, Nutrition Research Center, Department of Community Nutrition, Tabriz University of Medical Sciences, Attar Neyshabouri Street, Tabriz, Iran
| | - Ghazaleh Nameni
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ghazaleh Hajiluian
- Nutrition Research Center, Department of Community Nutrition, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Parviz Shahabi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Wu L, Sun D. Effects of calcium plus vitamin D supplementation on blood pressure: a systematic review and meta-analysis of randomized controlled trials. J Hum Hypertens 2017; 31:547-554. [PMID: 28230063 DOI: 10.1038/jhh.2017.12] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 11/12/2016] [Accepted: 12/13/2016] [Indexed: 02/07/2023]
Abstract
The effect of calcium or vitamin D supplement on blood pressure (BP) has been explored in previous meta-analyses, but the results are conflicting. The combined efficacy of calcium and vitamin D on BP has not been systematically assessed. Thus, we conducted a meta-analysis of randomized controlled trials (RCTs) to explore the effect of calcium plus vitamin D (CaD) supplementation on changes of systolic blood pressure (SBP) and diastolic blood pressure among male and female participants (with and without diagnosed hypertension) aged 18 years or older. The PubMed, the Embase and the Cochrane Central Register of controlled trials were searched. A random effects model was used to calculate the pooled weighted mean differences (WMDs) with 95% confidence intervals (CIs) for the continuous outcome data. Cochrane Collaboration tool was used to assess the study quality of each trial. We further performed subgroup analysis and meta-regression by ethnicity, gender, age, health status, supplement dose, co-interventions, supplement duration and quality assessment. Eight RCTs involving 36 806 participants were assessed. The follow-up time ranged from 15 weeks to a maximum of 7 years. No meaningful effect on daytime office BP was detected in the present study, with evidence of significant heterogeneity. Subgroup analysis by gender indicated some evidence of elevated SBP in male participants, and the WMD (95% CI) was 1.49 mm Hg (1.03, 1.95). Further high-quality research is still warranted to confirm the magnitude of the effect of CaD supplementation on the changes of BP among participants with different ethnicity, gender, health status and CaD supplements.
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Affiliation(s)
- L Wu
- Department of Epidemiology, Institute of Geriatrics, Beijing Key Laboratory of Aging and Geriatrics, Chinese People's Liberation Army General Hospital, Beijing, China
| | - D Sun
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX, USA
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Xu Y, O'Malley BW, Elmquist JK. Brain nuclear receptors and body weight regulation. J Clin Invest 2017; 127:1172-1180. [PMID: 28218618 DOI: 10.1172/jci88891] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Neural pathways, especially those in the hypothalamus, integrate multiple nutritional, hormonal, and neural signals, resulting in the coordinated control of body weight balance and glucose homeostasis. Nuclear receptors (NRs) sense changing levels of nutrients and hormones, and therefore play essential roles in the regulation of energy homeostasis. Understanding the role and the underlying mechanisms of NRs in the context of energy balance control may facilitate the identification of novel targets to treat obesity. Notably, NRs are abundantly expressed in the brain, and emerging evidence indicates that a number of these brain NRs regulate multiple aspects of energy balance, including feeding, energy expenditure and physical activity. In this Review we summarize some of the recent literature regarding effects of brain NRs on body weight regulation and discuss mechanisms underlying these effects.
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Himbert C, Ose J, Delphan M, Ulrich CM. A systematic review of the interrelation between diet- and surgery-induced weight loss and vitamin D status. Nutr Res 2016; 38:13-26. [PMID: 28381350 DOI: 10.1016/j.nutres.2016.12.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 11/30/2016] [Accepted: 12/03/2016] [Indexed: 12/30/2022]
Abstract
Obesity is a major global health problem and has been associated with vitamin D deficiency. Intentional weight loss may alter vitamin D status and, conversely, vitamin D supplementation has been hypothesized to aid in weight loss. A systematic literature search in PubMed/Medline identified 3173 articles of which 37 studies (randomized controlled trials (RCT) [n=17], non-RCTs [n=20]) are summarized as effect of: (I) diet-induced weight loss on vitamin D status (n=7), (II) vitamin D supplementation on diet-induced weight loss (n=11), (III) surgery-induced weight loss on vitamin D status (n=15), and (IV) vitamin D supplementation after surgery-induced weight loss on vitamin D status (n=5). While all studies on the effect of diet-induced weight loss on vitamin D status have consistently reported increased vitamin D levels, the targeted percentage of weight loss that is necessary for an increase has varied between 5% and >10%. N=11 RCTs testing the effect of vitamin D supplementation observe that vitamin D supplementation does not result in increased weight loss, but may affect body fat loss. Vitamin D deficiency and subsequent hyperparathyroidism have been detected in post-surgery patients, and there is evidence that vitamin D supplementation improves these post-surgery complications. We review the current evidence addressing the role of vitamin D status and supplementation in diet- and surgery-induced weight loss. Subsequently, we highlight gaps in current research and suggest directions for future research including differences in vitamin D supplementation dosages, indoor vs. outdoor exercise, and the assessment of vitamin D status in different body pools.
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Affiliation(s)
- Caroline Himbert
- Huntsman Cancer Institute, Population Sciences, Salt Lake City, UT; Department of Population Health Sciences, University of Utah, Salt Lake City, UT; University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Jennifer Ose
- Huntsman Cancer Institute, Population Sciences, Salt Lake City, UT; Department of Population Health Sciences, University of Utah, Salt Lake City, UT
| | - Mahmoud Delphan
- Huntsman Cancer Institute, Population Sciences, Salt Lake City, UT; Department of Population Health Sciences, University of Utah, Salt Lake City, UT; Exercise Immunology, Physical Education and Sport Sciences Department, Tarbiat Modares University, Tehran, Iran
| | - Cornelia M Ulrich
- Huntsman Cancer Institute, Population Sciences, Salt Lake City, UT; Department of Population Health Sciences, University of Utah, Salt Lake City, UT.
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Li P, Fan C, Lu Y, Qi K. Effects of calcium supplementation on body weight: a meta-analysis. Am J Clin Nutr 2016; 104:1263-1273. [PMID: 27733391 DOI: 10.3945/ajcn.116.136242] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 09/02/2016] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Whether calcium supplementation can reduce body weight and prevent obesity remains unclear because of inconsistent reports. OBJECTIVE We performed a meta-analysis to investigate the correlations between calcium supplementation and changes in body weight on the basis of age, sex, body mass index (BMI) of the subjects, and length of calcium intervention. DESIGN PubMed, EMBASE, Web of Knowledge, and China National Knowledge Infrastructure databases were systematically searched to select relevant studies that were published from January 1994 to March 2016. Both randomized controlled trials and longitudinal studies of calcium supplementation were included, and random- or fixed-effects models in a software program were used for the data analysis. RESULTS Thirty-three studies involving a total of 4733 participants were included in this meta-analysis. No significant differences in weight changes were shown between calcium intervention and control groups (mean: -0.01 kg; 95% CI -0.02, 0.00 kg; P = 0.12). However, negative correlations between calcium supplementation and weight changes were shown in children and adolescents (mean: -0.26 kg; 95% CI: -0.41, -0.11 kg; P < 0.001) and in adult men and either premenopausal or old (>60 y of age) women (mean: -0.91 kg; 95% CI: -1.38, -0.44 kg; P < 0.001) but not in postmenopausal women (mean: -0.14 kg; 95% CI: -0.54, 0.26 kg; P = 0.50). When BMI was considered, a negative correlation between calcium supplementation and weight changes was observed in subjects with normal BMI (mean: -0.53 kg; 95% CI: -0.89, -0.16 kg; P = 0.005) but not in overweight or obese subjects (mean: -0.35 kg; 95% CI: -0.81, 0.11 kg; P = 0.14). Compared with the control groups, no differences in weight changes were shown in the calcium-intervention groups when the lengths of calcium interventions were <6 mo (mean: -0.09 kg; 95% CI: -0.45, 0.26 kg; P = 0.60) or ≥6 mo (mean: -0.01 kg; 95% CI: -0.02, 0.01 kg; P = 0.46). CONCLUSION Increasing calcium intake through calcium supplements can reduce body weight in subjects who have a normal BMI or in children and adolescents, adult men, or premenopausal women.
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Affiliation(s)
- Ping Li
- Nutrition Research Unit, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, Beijing, China
| | - Chaonan Fan
- Nutrition Research Unit, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, Beijing, China
| | - Yuanyuan Lu
- Nutrition Research Unit, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, Beijing, China
| | - Kemin Qi
- Nutrition Research Unit, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, Beijing, China
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Sisley SR, Arble DM, Chambers AP, Gutierrez-Aguilar R, He Y, Xu Y, Gardner D, Moore DD, Seeley RJ, Sandoval DA. Hypothalamic Vitamin D Improves Glucose Homeostasis and Reduces Weight. Diabetes 2016; 65:2732-41. [PMID: 27217488 PMCID: PMC5001188 DOI: 10.2337/db16-0309] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 05/09/2016] [Indexed: 02/06/2023]
Abstract
Despite clear associations between vitamin D deficiency and obesity and/or type 2 diabetes, a causal relationship is not established. Vitamin D receptors (VDRs) are found within multiple tissues, including the brain. Given the importance of the brain in controlling both glucose levels and body weight, we hypothesized that activation of central VDR links vitamin D to the regulation of glucose and energy homeostasis. Indeed, we found that small doses of active vitamin D, 1α,25-dihydroxyvitamin D3 (1,25D3) (calcitriol), into the third ventricle of the brain improved glucose tolerance and markedly increased hepatic insulin sensitivity, an effect that is dependent upon VDR within the paraventricular nucleus of the hypothalamus. In addition, chronic central administration of 1,25D3 dramatically decreased body weight by lowering food intake in obese rodents. Our data indicate that 1,25D3-mediated changes in food intake occur through action within the arcuate nucleus. We found that VDR colocalized with and activated key appetite-regulating neurons in the arcuate, namely proopiomelanocortin neurons. Together, these findings define a novel pathway for vitamin D regulation of metabolism with unique and divergent roles for central nervous system VDR signaling. Specifically, our data suggest that vitamin D regulates glucose homeostasis via the paraventricular nuclei and energy homeostasis via the arcuate nuclei.
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Affiliation(s)
- Stephanie R Sisley
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX
| | - Deanna M Arble
- Department of Surgery, University of Michigan, Ann Arbor, MI
| | - Adam P Chambers
- Department of Incretin and Obesity Pharmacology, Novo Nordisk, Måløv, Denmark
| | - Ruth Gutierrez-Aguilar
- División de Investigación, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico Laboratorio de Enfermedades Metabólicas: Obesidad y Diabetes, Hospital Infantil de México "Federico Gómez," Mexico City, Mexico
| | - Yanlin He
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX
| | - Yong Xu
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX
| | - David Gardner
- Diabetes Center, University of California, San Francisco, San Francisco, CA
| | - David D Moore
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX
| | - Randy J Seeley
- Department of Surgery, University of Michigan, Ann Arbor, MI
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Nikooyeh B, Neyestani TR, Zahedirad M, Mohammadi M, Hosseini SH, Abdollahi Z, Salehi F, Mirzay Razaz J, Shariatzadeh N, Kalayi A, Lotfollahi N, Maleki MR. Vitamin D-Fortified Bread Is as Effective as Supplement in Improving Vitamin D Status: A Randomized Clinical Trial. J Clin Endocrinol Metab 2016; 101:2511-9. [PMID: 27115063 DOI: 10.1210/jc.2016-1631] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
CONTEXT Bread can potentially be a suitable vehicle for fortification with vitamin D. OBJECTIVE This study was undertaken to evaluate the following: 1) the bioavailability of vitamin D from the fortified Iranian bread and 2) the possible effects of daily consumption of the fortified bread on certain health aspects. DESIGN, SETTING, AND PARTICIPANTS This was a randomized, double-blind, placebo-controlled trial conducted over 8 weeks in 90 healthy subjects aged 20-60 years. INTERVENTION Subjects were randomly allocated to one of three groups: 1) fortified bread (FP; 50 g bread fortified with 25 μg vitamin D3 plus placebo daily; n = 30); 2) supplement (SP; 50 g plain bread plus 25 μg vitamin D supplement daily; n = 30); and 3) control (CP; 50 g plain bread plus placebo daily; n = 30). OUTCOME MEASURES Initial and final anthropometric and biochemical assessments were performed. RESULTS The within-group changes of serum 25-hydroxyvitamin D concentrations were 39.0 ± 22.6 (P < .001), 28.9 ± 31.2 (P < .001), and -9.2 ± 12.3 nmol/L in the FP, SP, and CP groups, respectively. Only in FP and SP groups, serum intact PTH concentrations decreased approximately 13.5% and 14.5%, respectively. Visceral fat also showed a significant decrement in FP (-1.05% ± 1.4%; P ≤ .001) and SP (-0.96% ± 1.7%; P = .006). Serum low-density lipoprotein cholesterol concentration showed a within-group reduction in FP (-10.4 ± 11.2 mg/dL; P < .001) and an insignificant decrement in SP (-6.6 ± 20.2 mg/dL; P = .083). Serum high-density lipoprotein increased in both vitamin D-supplemented groups (FP: 9.7 ± 7.6 vs SP: 5.7 ± 6.7 mg/dL; P < .001). CONCLUSION Vitamin D-fortified bread could be potentially effective in raising circulating 25-hydroxyvitamin D levels of the population to nearly adequate levels.
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Affiliation(s)
- Bahareh Nikooyeh
- Laboratory of Nutrition Research (B.N., T.R.N., M.Z., N.S., A.K., N.L., M.-R.M.) and Departments of Food Technology Research (M.M.), Food Technology (S.H.H.), and Community Nutrition (J.M.R.), National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran; and Office of Community Nutrition (Z.A., F.S.), Deputy of Health, Iran Ministry of Health, Treatment, and Medical Education, Tehran 558-14665, Iran
| | - Tirang R Neyestani
- Laboratory of Nutrition Research (B.N., T.R.N., M.Z., N.S., A.K., N.L., M.-R.M.) and Departments of Food Technology Research (M.M.), Food Technology (S.H.H.), and Community Nutrition (J.M.R.), National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran; and Office of Community Nutrition (Z.A., F.S.), Deputy of Health, Iran Ministry of Health, Treatment, and Medical Education, Tehran 558-14665, Iran
| | - Maliheh Zahedirad
- Laboratory of Nutrition Research (B.N., T.R.N., M.Z., N.S., A.K., N.L., M.-R.M.) and Departments of Food Technology Research (M.M.), Food Technology (S.H.H.), and Community Nutrition (J.M.R.), National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran; and Office of Community Nutrition (Z.A., F.S.), Deputy of Health, Iran Ministry of Health, Treatment, and Medical Education, Tehran 558-14665, Iran
| | - Mehrdad Mohammadi
- Laboratory of Nutrition Research (B.N., T.R.N., M.Z., N.S., A.K., N.L., M.-R.M.) and Departments of Food Technology Research (M.M.), Food Technology (S.H.H.), and Community Nutrition (J.M.R.), National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran; and Office of Community Nutrition (Z.A., F.S.), Deputy of Health, Iran Ministry of Health, Treatment, and Medical Education, Tehran 558-14665, Iran
| | - S Hedayat Hosseini
- Laboratory of Nutrition Research (B.N., T.R.N., M.Z., N.S., A.K., N.L., M.-R.M.) and Departments of Food Technology Research (M.M.), Food Technology (S.H.H.), and Community Nutrition (J.M.R.), National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran; and Office of Community Nutrition (Z.A., F.S.), Deputy of Health, Iran Ministry of Health, Treatment, and Medical Education, Tehran 558-14665, Iran
| | - Zahra Abdollahi
- Laboratory of Nutrition Research (B.N., T.R.N., M.Z., N.S., A.K., N.L., M.-R.M.) and Departments of Food Technology Research (M.M.), Food Technology (S.H.H.), and Community Nutrition (J.M.R.), National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran; and Office of Community Nutrition (Z.A., F.S.), Deputy of Health, Iran Ministry of Health, Treatment, and Medical Education, Tehran 558-14665, Iran
| | - Foroozan Salehi
- Laboratory of Nutrition Research (B.N., T.R.N., M.Z., N.S., A.K., N.L., M.-R.M.) and Departments of Food Technology Research (M.M.), Food Technology (S.H.H.), and Community Nutrition (J.M.R.), National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran; and Office of Community Nutrition (Z.A., F.S.), Deputy of Health, Iran Ministry of Health, Treatment, and Medical Education, Tehran 558-14665, Iran
| | - Jalaledin Mirzay Razaz
- Laboratory of Nutrition Research (B.N., T.R.N., M.Z., N.S., A.K., N.L., M.-R.M.) and Departments of Food Technology Research (M.M.), Food Technology (S.H.H.), and Community Nutrition (J.M.R.), National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran; and Office of Community Nutrition (Z.A., F.S.), Deputy of Health, Iran Ministry of Health, Treatment, and Medical Education, Tehran 558-14665, Iran
| | - Nastaran Shariatzadeh
- Laboratory of Nutrition Research (B.N., T.R.N., M.Z., N.S., A.K., N.L., M.-R.M.) and Departments of Food Technology Research (M.M.), Food Technology (S.H.H.), and Community Nutrition (J.M.R.), National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran; and Office of Community Nutrition (Z.A., F.S.), Deputy of Health, Iran Ministry of Health, Treatment, and Medical Education, Tehran 558-14665, Iran
| | - Ali Kalayi
- Laboratory of Nutrition Research (B.N., T.R.N., M.Z., N.S., A.K., N.L., M.-R.M.) and Departments of Food Technology Research (M.M.), Food Technology (S.H.H.), and Community Nutrition (J.M.R.), National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran; and Office of Community Nutrition (Z.A., F.S.), Deputy of Health, Iran Ministry of Health, Treatment, and Medical Education, Tehran 558-14665, Iran
| | - Neda Lotfollahi
- Laboratory of Nutrition Research (B.N., T.R.N., M.Z., N.S., A.K., N.L., M.-R.M.) and Departments of Food Technology Research (M.M.), Food Technology (S.H.H.), and Community Nutrition (J.M.R.), National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran; and Office of Community Nutrition (Z.A., F.S.), Deputy of Health, Iran Ministry of Health, Treatment, and Medical Education, Tehran 558-14665, Iran
| | - Mohammad-Reza Maleki
- Laboratory of Nutrition Research (B.N., T.R.N., M.Z., N.S., A.K., N.L., M.-R.M.) and Departments of Food Technology Research (M.M.), Food Technology (S.H.H.), and Community Nutrition (J.M.R.), National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran; and Office of Community Nutrition (Z.A., F.S.), Deputy of Health, Iran Ministry of Health, Treatment, and Medical Education, Tehran 558-14665, Iran
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Zuk A, Fitzpatrick T, Rosella LC. Effect of Vitamin D3 Supplementation on Inflammatory Markers and Glycemic Measures among Overweight or Obese Adults: A Systematic Review of Randomized Controlled Trials. PLoS One 2016; 11:e0154215. [PMID: 27116227 PMCID: PMC4846157 DOI: 10.1371/journal.pone.0154215] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 04/11/2016] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Obesity induced low-grade chronic inflammation disrupts proper immune and metabolic function. Vitamin D deficiency increases inflammation, which is associated with cardiometabolic risk. This systematic review examines the association between oral vitamin D (VD) supplementation and circulating inflammatory biomarkers and glycemic outcomes from randomized controlled trials (RCTs) of overweight and/or obese adults. METHODS MEDLINE OVID, EMBASE and the Cochrane Central Register of Controlled Trials were searched according to a predefined protocol. Eligible RCTs included adults randomized to receive either oral VD or placebo. Two reviewers independently assessed RCTs for inclusion. Bias was assessed using the Cochrane Collaboration risk of bias tool. Mean differences were calculated comparing end-of-study sample means between the independent VD and placebo groups. RESULTS Eleven unique RCTs met inclusion criteria from a total of 3,383 identified citations, including 79 screened articles and 14 full text data extractions. Inflammatory and glycemic measures were reported in 7 and 10 RCTs, respectively. Most trial findings were non-significant with considerable heterogeneity in design, participants and outcomes. All but one trial was rated as either high or unclear risk of bias. Two RCTs reported significant changes in inflammatory biomarkers; however, the mean difference between groups was not statistically significant: C-reactive protein 0.19 mg/L (p = 0.88); Tumor Necrosis Factor -0.54 pg/ml (p = 0.20). Two other trials found significant mean differences in fasting plasma glucose -0.32 mmol/L (p = 0.03), Hemoglobin A1c -0.13% (p = 0.04), and Homeostatic Model Assessment -0.86 (p = 0.02) following VD supplementation. CONCLUSIONS Overall, there is no clear established benefit of VD supplementation on inflammatory biomarkers among overweight/obese adults. Baseline serum VD possibly influences the effect of VD repletion on inflammatory markers. Risk of bias was present in most studies, thus supporting the need for higher quality studies in this area to more conclusively understand the role VD supplementation has on inflammatory pathways.
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Affiliation(s)
- Aleksandra Zuk
- Dalla Lana School of Public Health, Division of Epidemiology, University of Toronto, Toronto, Ontario, Canada
| | | | - Laura C. Rosella
- Dalla Lana School of Public Health, Division of Epidemiology, University of Toronto, Toronto, Ontario, Canada
- Public Health Ontario, Toronto, Ontario, Canada
- Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
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Serum 25-hydroxyvitamin D concentrations and cardiometabolic risk factors in adolescents and young adults. Br J Nutr 2016; 115:1994-2002. [DOI: 10.1017/s0007114516001185] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
AbstractEvidence associating serum 25-hydroxyvitamin D (25(OH)D) concentrations and cardiometabolic risk factors is inconsistent and studies have largely been conducted in adult populations. We examined the prospective associations between serum 25(OH)D concentrations and cardiometabolic risk factors from adolescence to young adulthood in the West Australian Pregnancy Cohort (Raine) Study. Serum 25(OH)D concentrations, BMI, homoeostasis model assessment for insulin resistance (HOMA-IR), TAG, HDL-cholesterol and systolic blood pressure (SBP) were measured at the 17-year (n 1015) and 20-year (n 1117) follow-ups. Hierarchical linear mixed models with maximum likelihood estimation were used to investigate associations between serum 25(OH)D concentrations and cardiometabolic risk factors, accounting for potential confounders. In males and females, respectively, mean serum 25(OH)D concentrations were 73·6 (sd 28·2) and 75·4 (sd 25·9) nmol/l at 17 years and 70·0 (sd 24·2) and 74·3 (sd 26·2) nmol/l at 20 years. Deseasonalised serum 25(OH)D3 concentrations were inversely associated with BMI (coefficient −0·01; 95 % CI −0·03, −0·003; P=0·014). No change over time was detected in the association for males; for females, the inverse association was stronger at 20 years compared with 17 years. Serum 25(OH)D concentrations were inversely associated with log-HOMA-IR (coefficient −0·002; 95 % CI −0·003, −0·001; P<0·001) and positively associated with log-TAG in females (coefficient 0·002; 95 % CI 0·0008, 0·004; P=0·003). These associations did not vary over time. There were no significant associations between serum 25(OH)D concentrations and HDL-cholesterol or SBP. Clinical trials in those with insufficient vitamin D status may be warranted to determine any beneficial effect of vitamin D supplementation on insulin resistance, while monitoring for any deleterious effect on TAG.
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Pannu PK, Calton EK, Soares MJ. Calcium and Vitamin D in Obesity and Related Chronic Disease. ADVANCES IN FOOD AND NUTRITION RESEARCH 2016; 77:57-100. [PMID: 26944102 DOI: 10.1016/bs.afnr.2015.11.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
There is a pandemic of lifestyle-related diseases. In both developed and lesser developed countries of the world, an inadequacy of calcium intake and low vitamin D status is common. In this chapter, we explore a mechanistic framework that links calcium and vitamin D status to chronic conditions including obesity, systemic inflammation, endothelial dysfunction, dyslipidemia and cardiovascular disease, and type 2 diabetes mellitus. We also update the available clinical evidence, mainly from randomized controlled trials, to provide a synthesis of evidence in favor or against these hypotheses. There is consistent data to support calcium increasing whole body fat oxidation and increasing fecal fat excretion, while there is good cellular evidence for vitamin D reducing inflammation. Clinical trials support a marginal reduction in circulating lipids and some meta-analysis support an increase in insulin sensitivity following vitamin D. However, these mechanistic pathways and intermediate biomarkers of disease do not consistently transcribe into measurable health outcomes. Cementing the benefits of calcium and vitamin D for extraskeletal health needs a reexamination of the target 25(OH)D level to be achieved and the minimum duration of future trials.
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Affiliation(s)
- Poonam K Pannu
- School of Public Health, Curtin Health Innovation Research Institute-Metabolic Health, Faculty of Health Sciences, Curtin University, Perth, WA, Australia
| | - Emily K Calton
- School of Public Health, Curtin Health Innovation Research Institute-Metabolic Health, Faculty of Health Sciences, Curtin University, Perth, WA, Australia
| | - Mario J Soares
- School of Public Health, Curtin Health Innovation Research Institute-Metabolic Health, Faculty of Health Sciences, Curtin University, Perth, WA, Australia.
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Wamberg L, Pedersen SB, Rejnmark L, Richelsen B. Causes of Vitamin D Deficiency and Effect of Vitamin D Supplementation on Metabolic Complications in Obesity: a Review. Curr Obes Rep 2015; 4:429-40. [PMID: 26353882 DOI: 10.1007/s13679-015-0176-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Obese subjects are often characterized by low plasma 25-hydroxy-vitamin D (25OHD) levels. Many explanations for this association have been proposed. Low plasma 25OHD is associated with obesity-related comorbidities such as insulin resistance, type 2 diabetes mellitus, and low-grade inflammation. In this review, we discuss the proposed mechanisms for low 25OHD in obesity and explore the results of recent RCTs on vitamin D (VD) supplementation on obesity and its metabolic complications such as insulin resistance and type 2 diabetes. Although the results from these clinical randomized controlled trials vary, the general picture is that VD treatment of obese individuals does not seem to be an effective treatment of obesity-related metabolic complications.
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Affiliation(s)
- Louise Wamberg
- Department of Internal Medicine and Endocrinology MEA, Aarhus University Hospital, Tage- Hansens Gade 2, DK-8000, Aarhus, Denmark.
| | - Steen B Pedersen
- Department of Internal Medicine and Endocrinology MEA, Aarhus University Hospital, Tage- Hansens Gade 2, DK-8000, Aarhus, Denmark.
| | - Lars Rejnmark
- Department of Internal Medicine and Endocrinology MEA, Aarhus University Hospital, Tage- Hansens Gade 2, DK-8000, Aarhus, Denmark.
| | - Bjørn Richelsen
- Department of Internal Medicine and Endocrinology MEA, Aarhus University Hospital, Tage- Hansens Gade 2, DK-8000, Aarhus, Denmark.
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The effect of vitamin D supplementation on insulin and glucose metabolism in overweight and obese individuals: systematic review with meta-analysis. Sci Rep 2015; 5:16142. [PMID: 26543018 PMCID: PMC4635423 DOI: 10.1038/srep16142] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 10/05/2015] [Indexed: 12/26/2022] Open
Abstract
The aim of this systematic review was to assess the effect of vitamin D supplementation on glucose and insulin metabolism in overweight and obese subjects. The search process was based on the selection of publications listed in the databases: PubMed, Scopus, Web of Knowledge, Embase and the Cochrane library that met the inclusion criteria. Twelve randomized controlled trials were included. The analysed population consisted of 1181 individuals with BMIs >23 kg/m2. Changes in the concentration of 25(OH)D, fasting glucose, insulin and the HOMA-IR index were assessed. In the meta-regression analysis, a restricted maximum likelihood method was applied. To combine individual study results, a meta-analysis was performed. Vitamin D supplementation did not have an effect on glucose concentrations, insulin level and HOMA-IR values when the supplemented dose, time of supplementation and baseline of 25(OH)D concentration were taken under consideration in subgroup-analysis. This meta-analysis provides evidence that vitamin D supplementation has no significant effect on glucose and insulin metabolism in overweight and obese individuals.
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