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Weller RB. Sunlight: Time for a Rethink? J Invest Dermatol 2024; 144:1724-1732. [PMID: 38661623 DOI: 10.1016/j.jid.2023.12.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 04/26/2024]
Abstract
UVR is a skin carcinogen, yet no studies link sun exposure to increased all-cause mortality. Epidemiological studies from the United Kingdom and Sweden link sun exposure with reduced all-cause, cardiovascular, and cancer mortality. Vitamin D synthesis is dependent on UVB exposure. Individuals with higher serum levels of vitamin D are healthier in many ways, yet multiple trials of oral vitamin D supplementation show little benefit. Growing evidence shows that sunlight has health benefits through vitamin D-independent pathways, such as photomobilization of nitric oxide from cutaneous stores with reduction in cardiovascular morbidity. Sunlight has important systemic health benefit as well as risks.
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Affiliation(s)
- Richard B Weller
- Centre for Inflammation Research, Institute for Regeneration and Repair, The University of Edinburgh, Edinburgh, United Kingdom; Department of Dermatology, The University of Edinburgh, Edinburgh, United Kingdom.
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Shu M, Xi Y, Wu J, Zhuo LB, Yan Y, Yang YD, Feng YY, Tan HQ, Yang HF, Chen YM. Relationship between Circulating 25-Hydroxyvitamin D and Metabolic Syndrome in Chinese Adults: A Large Nationwide Longitudinal Study. Nutrients 2024; 16:1480. [PMID: 38794718 PMCID: PMC11124364 DOI: 10.3390/nu16101480] [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: 04/02/2024] [Revised: 05/09/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
OBJECTIVE This study investigated the association of circulating levels of 25-hydroxyvitamin D (25[OH]D) with the risk of metabolic syndrome (MetS) and its components in adults. METHODS This nationwide cohort involved 23,810 Chinese adults attending annual health evaluations. Serum 25(OH)D levels, MetS status, and covariates were determined at each examination. Among them, 8146, 3310, and 1971 completed two, three, and more than three evaluations, respectively. A hybrid mixed-effects and Cox regression model was employed to determine the cross-sectional and longitudinal relationships. RESULTS The odds ratios (ORs) and 95% confidence intervals (CIs) of MetS were significantly lower in individuals within quartile 4 (vs. 1) of serum 25(OH)D for both between-individual (0.43 [0.35, 0.52]) and within-individual comparisons (0.60 [0.50, 0.73]), respectively (all p-trends < 0.001). Among the MetS components, the corresponding ORs (95% CI) in between- and within-individual comparisons were 0.40 (0.29, 0.54) and 0.26 (0.19, 0.36) for abdominal obesity, 0.49 (0.41, 0.58) and 0.78 (0.66, 0.93) for high triglycerides, 0.70 (0.59, 0.82) and 0.75 (0.64, 0.87) for hypertriglyceridemia, 0.48 (0.39, 0.59) and 0.87 (0.71, 1.07) for low HDL cholesterol, and 0.92 (0.76, 1.12) and 0.49 (0.41, 0.59) for hypertension, respectively. Decreased hazard ratios (95% CIs) in quartile 4 (vs. 1) of 25(OH)D were found for MetS (0.80 [0.65, 1.00]), high triglycerides (0.76 [0.62, 0.92]), abdominal obesity (0.77 [0.63, 0.96]), and low HDL cholesterol (0.64 [0.50, 0.81]). CONCLUSIONS Decreased concentrations of serum 25(OH)D correlate significantly to a heightened MetS risk and specific components. Our findings underscore the potential preventive function of circulating vitamin D concerning metabolic disorders.
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Affiliation(s)
- Mi Shu
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (M.S.); (Y.X.); (L.-B.Z.); (Y.Y.); (H.-Q.T.)
- Yibicom Health Management Center, Guangzhou 510530, China; (J.W.); (Y.-D.Y.); (Y.-Y.F.)
| | - Yue Xi
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (M.S.); (Y.X.); (L.-B.Z.); (Y.Y.); (H.-Q.T.)
| | - Jie Wu
- Yibicom Health Management Center, Guangzhou 510530, China; (J.W.); (Y.-D.Y.); (Y.-Y.F.)
| | - Lai-Bao Zhuo
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (M.S.); (Y.X.); (L.-B.Z.); (Y.Y.); (H.-Q.T.)
| | - Yan Yan
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (M.S.); (Y.X.); (L.-B.Z.); (Y.Y.); (H.-Q.T.)
| | - Yi-Duo Yang
- Yibicom Health Management Center, Guangzhou 510530, China; (J.W.); (Y.-D.Y.); (Y.-Y.F.)
| | - Yue-Yue Feng
- Yibicom Health Management Center, Guangzhou 510530, China; (J.W.); (Y.-D.Y.); (Y.-Y.F.)
| | - Hua-Qiao Tan
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (M.S.); (Y.X.); (L.-B.Z.); (Y.Y.); (H.-Q.T.)
| | - Hui-Fang Yang
- Yibicom Health Management Center, Guangzhou 510530, China; (J.W.); (Y.-D.Y.); (Y.-Y.F.)
| | - Yu-Ming Chen
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; (M.S.); (Y.X.); (L.-B.Z.); (Y.Y.); (H.-Q.T.)
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Mendes MM, Araújo MM, Botelho PB, de Carvalho KMB. Seasonal and sex-related variation in vitamin D status and its association with other biochemical markers in young individuals: A cross-sectional study. PLoS One 2024; 19:e0298862. [PMID: 38551916 PMCID: PMC10980231 DOI: 10.1371/journal.pone.0298862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 02/01/2024] [Indexed: 04/01/2024] Open
Abstract
BACKGROUND While several studies have investigated the association between vitamin D deficiency and biochemical parameters, the results are still inconsistent and mostly overlook seasonal variations. This study explored the relationships between 25-hydroxy-vitamin D (25(OH)D) concentrations, biochemical markers, and seasonal variation among young males and females. METHODS A cross-sectional study was conducted among 203 individuals aged 18-24 years of both sexes residing in Brasilia, Brazil (latitude: 15°S). Sociodemographic variables, season of blood collection, and serum levels of 25(OH)D, total cholesterol, HDL-cholesterol, LDL-cholesterol, triglycerides, glycated hemoglobin (HbA1c), glucose, insulin, hs-CRP, parathyroid hormone, ionized calcium, and alkaline phosphatase were included. Descriptive statistics and differences among groups, correlations, and linear regression tests were performed. RESULTS The mean age of the participants was 21.17±1.7 years, and the mean serum 25(OH)D level was 25.76±7.0 ng/mL. Of the participants, 50.7% had vitamin D insufficiency (20 to 29.9 ng/mL), and 23.2% were vitamin D deficient (≤20 ng/mL). Vitamin D deficiency was higher in the spring (53.2%) and among females (29.5%). In young men with vitamin D insufficiency/deficiency (≤29.9 ng/mL) (n = 49), 25(OH)D levels were inversely correlated with HOMA-β (r = -0.234, p = 0.032) and triglyceride (r = -0.415, p = 0.003) levels. However, there were no significant correlations between 25(OH)D concentrations and biochemical markers among women with insufficient and deficient vitamin D levels. CONCLUSION This study found a high prevalence of vitamin D insufficiency/deficiency among young individuals living in Brasília, Brazil, particularly women and during the spring season. Our findings suggest that lower 25(OH)D levels (≤29.9 ng/mL) may be associated with insulin resistance and an increased risk of cardiovascular disease in young men studied. However, further studies with larger representative samples are needed to explore the mechanisms underlying the association between vitamin D and biochemical parameters.
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Affiliation(s)
- Marcela Moraes Mendes
- Department of Nutrition, Graduate Program in Human Nutrition, University of Brasilia, Brasília, Federal District, Brazil
- Postgraduate Program, Faculty of Nutrition, Federal University of Goias, Goiania/GO, Brazil
| | - Maísa Miranda Araújo
- Department of Nutrition, Graduate Program in Human Nutrition, University of Brasilia, Brasília, Federal District, Brazil
| | - Patrícia Borges Botelho
- Department of Nutrition, Graduate Program in Human Nutrition, University of Brasilia, Brasília, Federal District, Brazil
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Ulaganathan V, Lye MS, Loh SP, Yap YY, Kandiah M, Augundhooa D, Bhattacharya T, Al-Olayan E, Wang C. Serum 25-Hydroxyvitamin D Is Inversely Associated with Nasopharyngeal Carcinoma: A Hospital-Based Matched Case-Control Study in Malaysia. Nutrients 2024; 16:397. [PMID: 38337681 PMCID: PMC10857213 DOI: 10.3390/nu16030397] [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: 12/20/2023] [Revised: 01/19/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Serum 25(OH)D deficiency consistently demonstrated molecular mechanisms through which chronic inflammation is associated with the risk of nasopharyngeal carcinoma (NPC). This study aimed to determine the association between serum 25(OH)D and NPC. A matched case-control study was conducted at two local hospitals. A total of 300 histologically confirmed NPC cases were matched with controls for age, gender, and ethnicity, and assessed for vitamin D status and other nutritional factors. Mean Vitamin D concentration was significantly lower among cases compared to controls (63.17 ± 19.15 nmol/L and 67.34 ± 23.06 nmol/L) (t = -2.41, p = 0.016). Multiple conditional logistic regression analysis indicated that higher levels of serum 25(OH)D were associated with reduced odds of NPC (AOR = 0.73, 95% CI = 0.57-0.94, p = 0.016) controlling for confounders including BMI, physical activity, smoking status, alcohol consumption, consumption of food high in vitamin D, salted fish consumption, and family history of NPC. There was a significant association between inadequate serum 25(OH)D status with accumulation of four risk factors and increased odds of getting NPC using polynomial regression analysis. Increased NPC odds ratios were observed after sequential accumulation of additional risk factors with the presence of inadequate serum 25(OH)D status (OR = 0.54, 95% CI = 0.27, 4.77, p = 0.322, OR = 1.04, 95% CI = 0.64, 1.72, p = 0.267, OR = 1.15, 95% CI = 0.73, 1.80, p = 0.067, OR = 1.93, 95% CI = 1.13, 3.31, p = 0.022, and OR = 5.55, 95% CI = 1.67, 10.3, p < 0.001 respectively). Future research in Malaysia should involve both prospective cohort studies and randomized controlled trials to confirm and further clarify the role of vitamin D in NPC outcomes.
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Affiliation(s)
- Vaidehi Ulaganathan
- Department of Food Science and Nutrition, Faculty of Applied Sciences, UCSI University, Kuala Lumpur 43000, Malaysia; (M.K.); (D.A.)
| | - Munn Sann Lye
- Department of Community Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Su Peng Loh
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
| | - Yoke Yeow Yap
- Graduate School of Medicine, KPJ Healthcare University, Nilai 71800, Negeri Sembilan, Malaysia;
- Otorhinolaryngology, KPJ Johor Specialist Hospital, Johor Bharu 80100, Johor, Malaysia
| | - Mirnalini Kandiah
- Department of Food Science and Nutrition, Faculty of Applied Sciences, UCSI University, Kuala Lumpur 43000, Malaysia; (M.K.); (D.A.)
| | - Digsha Augundhooa
- Department of Food Science and Nutrition, Faculty of Applied Sciences, UCSI University, Kuala Lumpur 43000, Malaysia; (M.K.); (D.A.)
| | - Tanima Bhattacharya
- Faculty of Applied Science, Lincoln University College, Petaling Jaya 47301, Selangor, Malaysia;
| | - Ebtesam Al-Olayan
- Department of Zoology, College of Science, King Saud University, Riyadh 11495, Saudi Arabia;
| | - Chuanyi Wang
- School of Environment Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China;
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Mohater S, Qahtan S, Alrefaie Z, Alahmadi A. Vitamin D improves hepatic alterations in ACE1 and ACE2 expression in experimentally induced metabolic syndrome. Saudi Pharm J 2023; 31:101709. [PMID: 37559868 PMCID: PMC10407910 DOI: 10.1016/j.jsps.2023.101709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 07/20/2023] [Indexed: 08/11/2023] Open
Abstract
Metabolic Syndrome (MetS) is a term used to describe a cluster of pathophysiological, biochemical, and metabolic criteria; including high Blood Pressure (BP), high cholesterol, dyslipidaemia, central obesity and Insulin Resistance (IR). The Renin Angiotensin System (RAS) has a regulatory function in BP, hydroelectrolyte balance, and cardiovascular function. RAS is composed of angiotensinogen (AGT), (Ang I), (Ang II), (ACE1), (ACE2), (AT1R), (AT2R), and (Ang 1-7). Vitamin D had been proved to act as a protective factor against MetS. Therefore, the study is pursued to explore vitamin D supplementation roles on hepatic RAS in MetS experimental model. At first, 36 males Albino rats were separated into 4 groups and induced to MetS under controlled circumstances for 3 months. Then, data were collected from blood samples, whereas RNA extracted from liver were analyzed using biochemical and statistical analysis tests. As a result, the major finding was proving that vitamin D can balance the expression of ACE1 and ACE2. Also, confirming that it can improve MetS components by elevating HDL and insulin levels while reducing the levels of BP, cholesterol, LDL, TG, GLU, ALT, AST, and IR. These outcomes may give a new insight into the RAS pathways associated with MetS.
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Affiliation(s)
- Sara Mohater
- Department of Biological Sciences, College of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Samar Qahtan
- Department of Biological Sciences, College of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Zienab Alrefaie
- Medical Physiology Department, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
- Physiology Department, Faculty of Medicine, Cairo University, Egypt
| | - Ahlam Alahmadi
- Department of Biological Sciences, College of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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Marusca LM, Reddy G, Blaj M, Prathipati R, Rosca O, Bratosin F, Bogdan I, Horhat RM, Tapos GF, Marti DT, Susan M, Pingilati RA, Horhat FG, Adelina M. The Effects of Vitamin D Supplementation on Respiratory Infections in Children under 6 Years Old: A Systematic Review. Diseases 2023; 11:104. [PMID: 37606475 PMCID: PMC10443358 DOI: 10.3390/diseases11030104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/27/2023] [Accepted: 08/03/2023] [Indexed: 08/23/2023] Open
Abstract
Childhood respiratory tract infections (RTIs) pose a significant health burden, especially in children under six years old. The main objective of this systematic review was to assess the effectiveness of vitamin D supplementation in the prevention of RTI in this population while also exploring potential effect modifiers such as age, baseline vitamin D status, and type of respiratory infection. A systematic review of the literature published up to February 2023 was conducted according to PRISMA guidelines, searching PubMed, Web of Science, Cochrane, and Scopus databases. Eight studies met the inclusion criteria, which investigated the association between vitamin D supplementation and respiratory infections in children between zero and five years old. The included studies were conducted between 2012 and 2021, encompassing a total of 2189 children from five randomized trials, two case-control studies, and one prospective cohort study. The relationship between vitamin D supplementation and the prevention of childhood RTI was not consistently observed across all included studies. Pooled results demonstrated varied effects of vitamin D supplementation on respiratory infection incidence, severity, and symptoms. Three studies reported statistically significant associations between low vitamin D levels and respiratory infections (OR = 4.90, OR = 6.97), while one study found that children who received vitamin D supplementation of 800 UI/day for 3 months during the cold season had fewer episodes of respiratory symptoms (RR = 0.55) and recovered more quickly from acute RTI. Lastly, according to one study, vitamin D intake < 80 IU/kg/day was significantly associated with the risk of acquiring pneumonia (OR 7.9) but not bronchiolitis. The remaining five studies found no statistically significant differences in infection rates or severity (p-value > 0.050). The available evidence on the effectiveness of vitamin D supplementation for preventing and treating respiratory infections in children under six years old is limited, with only a few favorable effects being reported. In some cases, a dose of 80 UI/kg/day was found to provide significant protection for acute respiratory infections, although in the major trials the only benefit was a quicker recovery and fewer respiratory symptoms, with no impact on incidence and severity of respiratory infections. Nevertheless, the study protocol, the supplementation dose, and duration of supplementation had significant variations between studies, leading to inconclusive findings.
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Affiliation(s)
- Larisa Mihaela Marusca
- Laboratory Medicine, “Louis Turcanu” Emergency Hospital for Children, Doctor Iosif Nemoianu Street, 300011 Timisoara, Romania;
- Doctoral School, “Victor Babes” University of Medicine and Pharmacy Timisoara, 300041 Timisoara, Romania; (F.B.); (I.B.)
| | - Gowry Reddy
- New York Medical College at St. Mary’s and St. Clare’s Hospital, Denville, NJ 07834, USA;
| | - Mihaela Blaj
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, University Street, 700115 Iasi, Romania
| | | | - Ovidiu Rosca
- Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, Eftimie Murgu Square 2, 300041 Timisoara, Romania;
| | - Felix Bratosin
- Doctoral School, “Victor Babes” University of Medicine and Pharmacy Timisoara, 300041 Timisoara, Romania; (F.B.); (I.B.)
- Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, Eftimie Murgu Square 2, 300041 Timisoara, Romania;
| | - Iulia Bogdan
- Doctoral School, “Victor Babes” University of Medicine and Pharmacy Timisoara, 300041 Timisoara, Romania; (F.B.); (I.B.)
- Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, Eftimie Murgu Square 2, 300041 Timisoara, Romania;
| | - Razvan Mihai Horhat
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania;
| | - Gabriela-Florentina Tapos
- Department of Emergency Medicine, Arad County Emergency Clinical Hospital, Calea Victoriei, 310037 Arad, Romania;
| | - Daniela-Teodora Marti
- Department of Biology and Life Sciences, Faculty of Medicine, “Vasile Goldis” Western University of Arad, Revolutiei Square 94, 310025 Arad, Romania;
| | - Monica Susan
- Department of Internal Medicine, Discipline of Medical Semiology I, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania;
| | - Raja Akshay Pingilati
- Malla Reddy Institute of Medical Sciences, Suraram Main Road 138, Hyderabad 500055, India;
| | - Florin George Horhat
- Multidisciplinary Research Center on Antimicrobial Resistance (MULTI-REZ), Microbiology Department, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania;
| | - Mavrea Adelina
- Department of Internal Medicine I, Cardiology Clinic, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square 2, 300041 Timisoara, Romania;
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Lin HR, Xu F, Chen D, Xie K, Yang Y, Hu W, Li BY, Jiang Z, Liang Y, Tang XY, Zheng JS, Chen YM. The gut microbiota-bile acid axis mediates the beneficial associations between plasma vitamin D and metabolic syndrome in Chinese adults: A prospective study. Clin Nutr 2023; 42:887-898. [PMID: 37086617 DOI: 10.1016/j.clnu.2023.03.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 03/28/2023] [Accepted: 03/29/2023] [Indexed: 04/24/2023]
Abstract
BACKGROUND & AIMS Previous studies have suggested that circulating 25-hydroxyvitamin D (25 [OH]D, VD) and the gut microbiota-bile acid axis play crucial roles in metabolic health. Exploring the mediating role of the gut microbiota-bile acid axis would improve our understanding of the mechanisms underlying the effects of VD on human metabolic health. This study examined the association between plasma 25(OH)D and the prevalence/incidence of metabolic syndrome (MetS) and the mediating role of the gut microbiota-bile acid axis. METHODS This prospective study included 3180 participants with plasma 25(OH)D data at baseline and 2966 participants with a 9-year follow-up. MetS was determined every three years. The gut microbiota was analyzed by 16S rRNA sequencing in 1752 participants, and targeted bile acid metabolites in feces were further determined in 974 participants using UPLC‒MS/MS at the middle of the study. Mediating roles of microbiota and bile acids in the VD-MetS associations were analyzed using mediation/path analyses adjusted for potential confounders. RESULTS Among the 2966 participants who were followed-up, 1520, 193, 647, and 606 were MetS-free (normal), recovered, had incident MetS, and had persistent MetS, respectively. The multivariable-adjusted ORs (95% CIs) of MetS prevalence were 0.65 (0.50, 0.84) for baseline MetS and 0.46 (0.33, 0.65) for 9-year persistent MetS in quartile 4 (compared to quartile 1) of plasma 25(OH)D (median: 37.7 vs. 19.6, ng/ml). The corresponding HR (95% CI) of 9-year MetS incidence was 0.71 (0.56, 0.90) (all P-trend < 0.05). Higher VD concentrations were associated with greater α-diversity of the gut microbiota, which was inversely correlated with MetS risk. The groups classified by VD and MetS status had significantly different β-diversity. Ruminiclostridium-6 and Christensenellaceae R-7 group were enriched in the high-VD group and were inversely associated with MetS. However, opposite associations were observed for Lachnoclostridium and Acidaminococcus. The overlapping differential microbial score (ODMS) developed from the four differential genera explained 12.2% of the VD-MetS associations (Pmediation = 0.015). Furthermore, the fecal bile acid score created from 11 differential bile acids related to ODMS and MetS mediated 34.2% of the association between ODMS and MetS (Pmediation = 0.029). Path analyses showed that the inverse association between plasma 25(OH)D and MetS could be mediated by the gut microbiota-bile acid axis. CONCLUSIONS The findings suggest that the gut microbiota-bile acid axis partially mediates the beneficial association between plasma 25(OH)D and the risk of persistent MetS and incident MetS in the Chinese population.
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Affiliation(s)
- Hong-Rou Lin
- Department of Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou 510275, China
| | - Fengzhe Xu
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou 310024, China
| | - Danyu Chen
- Department of Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou 510275, China
| | - Keliang Xie
- Department of Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou 510275, China
| | - Yingdi Yang
- Department of Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou 510275, China
| | - Wei Hu
- Department of Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou 510275, China
| | - Bang-Yan Li
- Department of Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou 510275, China
| | - Zengliang Jiang
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou 310024, China
| | - Yuhui Liang
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou 310024, China
| | - Xin-Yi Tang
- The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China.
| | - Ju-Sheng Zheng
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou 310024, China.
| | - Yu-Ming Chen
- Department of Epidemiology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou 510275, China.
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Sandgruber F, Höger AL, Kunze J, Schenz B, Griehl C, Kiehntopf M, Kipp K, Kühn J, Stangl GI, Lorkowski S, Dawczynski C. Impact of Regular Intake of Microalgae on Nutrient Supply and Cardiovascular Risk Factors: Results from the NovAL Intervention Study. Nutrients 2023; 15:nu15071645. [PMID: 37049486 PMCID: PMC10097350 DOI: 10.3390/nu15071645] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/25/2023] [Accepted: 03/26/2023] [Indexed: 03/30/2023] Open
Abstract
A 14-day randomized controlled study with a parallel design was conducted with 80 healthy participants. Intervention groups I (IG1) and II (IG2) received a defined background diet and consumed a smoothie enriched with either 15 g of Chlorella dry weight (d.w.) or 15 g of Microchloropsis d.w. daily. Control group II (CG2) received a defined background diet without the smoothie. Control group I (CG1) received neither. Blood samples and 24-h urine were collected at the beginning and the end of the study. Serum concentrations of 25-hydroxyvitamin D3, vitamin D3, selenium, iron, ferritin, transferrin saturation, total cholesterol, low-density lipoprotein (LDL) cholesterol, high-density lipoprotein (HDL) cholesterol, non-HDL cholesterol and the LDL-cholesterol/HDL cholesterol ratio decreased in IG1 (p < 0.05), while 25-hydroxyvitamin D2 increased (p < 0.05). In IG2, vitamin D3, 25-hydroxyvitamins D2 and D3 decreased (p < 0.05), while concentrations of fatty acids C20:5n3 and C22:5n3 increased. Serum and urine uric acid increased in IG1 and IG2 (p < 0.05). Microchloropsis is a valuable source of n3 fatty acids, as is Chlorella of vitamin D2. Regular consumption of Chlorella may affect the iron and selenium status negatively but may impact blood lipids positively. An elevated uric acid concentration in blood and urine following the regular consumption of microalgae poses potential risks for human health.
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Affiliation(s)
- Fabian Sandgruber
- Junior Research Group Nutritional Concepts, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Dornburger Str. 29, 07743 Jena, Germany; (F.S.); (J.K.); (B.S.)
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Dornburger Str. 25, 07743 Jena, Germany; (J.K.); (G.I.S.); (S.L.)
| | - Anna-Lena Höger
- Competence Center Algal Biotechnology, Anhalt University of Applied Science, Bernburger Str. 55, 06366 Köthen, Germany; (A.-L.H.); (C.G.)
| | - Julia Kunze
- Junior Research Group Nutritional Concepts, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Dornburger Str. 29, 07743 Jena, Germany; (F.S.); (J.K.); (B.S.)
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Dornburger Str. 25, 07743 Jena, Germany; (J.K.); (G.I.S.); (S.L.)
| | - Benjamin Schenz
- Junior Research Group Nutritional Concepts, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Dornburger Str. 29, 07743 Jena, Germany; (F.S.); (J.K.); (B.S.)
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Dornburger Str. 25, 07743 Jena, Germany; (J.K.); (G.I.S.); (S.L.)
| | - Carola Griehl
- Competence Center Algal Biotechnology, Anhalt University of Applied Science, Bernburger Str. 55, 06366 Köthen, Germany; (A.-L.H.); (C.G.)
| | - Michael Kiehntopf
- Institute of Clinical Chemistry and Laboratory Diagnostics, University Hospital Jena, Am Klinikum 1, 07747 Jena, Germany;
| | - Kristin Kipp
- Department of Pediatrics and Adolescent Medicine, Sophien- and Hufeland Hospital, Henry-Van-De-Velde-Str. 1, 99425 Weimar, Germany;
| | - Julia Kühn
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Dornburger Str. 25, 07743 Jena, Germany; (J.K.); (G.I.S.); (S.L.)
- Institute of Agricultural and Nutritional Science, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 2, 06120 Halle, Germany
| | - Gabriele I. Stangl
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Dornburger Str. 25, 07743 Jena, Germany; (J.K.); (G.I.S.); (S.L.)
- Institute of Agricultural and Nutritional Science, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 2, 06120 Halle, Germany
| | - Stefan Lorkowski
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Dornburger Str. 25, 07743 Jena, Germany; (J.K.); (G.I.S.); (S.L.)
- Institute of Nutritional Sciences, Friedrich Schiller University Jena, Dornburger Str. 25, 07743 Jena, Germany
| | - Christine Dawczynski
- Junior Research Group Nutritional Concepts, Institute of Nutritional Sciences, Friedrich Schiller University Jena, Dornburger Str. 29, 07743 Jena, Germany; (F.S.); (J.K.); (B.S.)
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, Dornburger Str. 25, 07743 Jena, Germany; (J.K.); (G.I.S.); (S.L.)
- Correspondence:
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Ahmadieh H, Arabi A. Association between vitamin D and cardiovascular health: Myth or Fact? A narrative review of the evidence. WOMEN'S HEALTH (LONDON, ENGLAND) 2023; 19:17455057231158222. [PMID: 36869649 PMCID: PMC9989425 DOI: 10.1177/17455057231158222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
Vitamin D deficiency is prevalent worldwide. Since the discovery of the expression of vitamin D receptor in ventricular cardiomyocytes, fibroblasts, and blood vessels, there has been a growing body of literature assessing the link between vitamin D status and cardiovascular health from one side, and the effect of vitamin D supplementation on prevention of cardiovascular diseases from the other side. In this review, we summarized studies highlighting the role of vitamin D on cardiovascular health, namely atherosclerosis, hypertension, heart failure, and metabolic syndrome, a recognized significant risk factor for cardiovascular diseases. Studies showed discrepancies between findings from cross-sectional and longitudinal cohorts and those from interventional trials, but also between one outcome and another. Cross-sectional studies found a strong association between low 25 hydroxyvitamin D (25(OH)D3) and acute coronary syndrome, and heart failure. These findings encouraged the promotion for vitamin D supplementation as a preventive measure for cardiovascular diseases in the elderly, namely in women. This fact, however, turned out into a myth with the results of large interventional trials that did not show any benefit from vitamin D supplementation in reducing ischemic events, heart failure or its outcomes, or hypertension. Although some clinical studies showed beneficial effect of vitamin D supplementation on insulin sensitivity and metabolic syndrome, this effect was not consistent across all studies.
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Affiliation(s)
- Hala Ahmadieh
- HealthPlus Diabetes and Endocrinology Center, Abu Dhabi, UAE.,College of Medicine and Health Sciences, Khalifa University, Abu Dhabi, UAE.,Beirut Arab University, Beirut, Lebanon
| | - Asma Arabi
- Calcium Metabolism and Osteoporosis Program, Department of Internal Medicine, American University of Beirut, Beirut, Lebanon
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Efficacy of vitamin D supplementation in reducing body mass index and lipid profile in healthy young adults in Colombia: a pilot randomised controlled clinical trial. J Nutr Sci 2023; 12:e29. [PMID: 36843975 PMCID: PMC9947753 DOI: 10.1017/jns.2022.108] [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: 10/10/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 02/24/2023] Open
Abstract
The objective of the present study was to evaluate the efficacy of oral administration of vitamin D supplementation in reducing BMI and lipid profile in adolescents and young adults from a cohort in Bucaramanga, Colombia. One hundred and one young adults were randomly assigned to one of two doses of vitamin D [1000 international units (IU) or 200 IU] administered daily for 15 weeks. The primary outcomes were serum 25(OH)D levels, BMI and lipid profile. The secondary outcomes were waist-hip ratio, skinfolds and fasting blood glucose. We found a mean ± sd plasma concentration of 25-hydroxyvitamin D [25(OH)D] was 25⋅0 ± 7⋅0 ng/ml at baseline, and after 15 weeks, it increased to 31⋅0 ± 10⋅0 ng/ml in the participants who received a daily dose of 1000 IU, (P < 0⋅0001). For the participants in the control group (200 IU), it went from 26⋅0 ± 8⋅0 ng/ml to 29⋅0 ± 8⋅0 ng/ml (P = 0⋅002). There were no differences between groups in body mass index. There was a statistically significant decrease in LDL-cholesterol between the intervention group v. the control group (mean difference -11⋅50 mg/dl (95 % CI -21⋅86 to -1⋅15; P = 0⋅030). The conclusions of the present study were two different doses of vitamin D supplementation (200 IU v. 1000 IU) produced changes in serum 25(OH)D levels over 15 weeks of administration in healthy young adults. No significant changes were found in the body mass index when the effect of the treatments was compared. A significant reduction in LDL-cholesterol was found when comparing the two intervention groups. Trial registration: NCT04377386.
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Bahadorpour S, Hajhashemy Z, Saneei P. Serum 25-hydroxyvitamin D levels and dyslipidemia: a systematic review and dose-response meta-analysis of epidemiologic studies. Nutr Rev 2022; 81:1-25. [PMID: 35831956 DOI: 10.1093/nutrit/nuac038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
CONTEXT Findings of previous observational studies that examined the association between circulating vitamin D levels and lipid profiles have been inconsistent. OBJECTIVE A dose-response meta-analysis of epidemiologic studies was conducted to investigate the relationship between serum 25-hydroxyvitamin D levels and dyslipidemia in adults. DATA SOURCES Electronic databases were searched systematically for articles published up to June 2021. DATA EXTRACTION Fifty-seven observational studies and 2 cohort studies that reported odds ratios (ORs) or relative risks (RRs) with 95%CIs for dyslipidemia in relation to serum 25-hydroxyvitamin D levels in adults were included. DATA ANALYSIS A high level, vs a low level, of serum 25-hydroxyvitamin D was related to a significant 19% decrease in the odds of hypertriglyceridemia (OR 0.81; 95%CI, 0.74-0.89), an 18% reduction in low high-density lipoprotein cholesterol (HDL-C) (OR 0.82; 95%CI, 0.76-0.89), and an 18% reduction in dyslipidemia (OR 0.82; 95%CI, 0.75-0.91). No significant association was found between a high vs a low level of serum 25-hydroxyvitamin D and risk of high low-density lipoprotein cholesterol (LDL-C) levels (OR 0.86; 95%CI, 0.62-1.19) or hypercholesterolemia (OR 1.03; 95%CI, 0.93-1.15). Dose-response analyses demonstrated that each 10 ng/mL increase in the serum 25-hydroxyvitamin D level was linked, respectively, to a 7% (OR 0.93;95%CI, 0.85-1.02), a 3% (OR 0.97; 95%CI, 0.90-1.05), and a 4% (OR 0.96; 95%CI, 0.92-1.00) marginally significant decrease in the odds of hypertriglyceridemia, low HDL-C, and dyslipidemia. CONCLUSION Higher serum 25-hydroxyvitamin D levels are associated with significant reductions in the odds of hypertriglyceridemia, low HDL-C, and dyslipidemia in a dose-response trend. SYSTEMATIC REVIEW REGISTRATION PROSPERO registration no. CRD42021219484.
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Affiliation(s)
- Sedigheh Bahadorpour
- are with the Students' Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran.,are with the Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Zahra Hajhashemy
- are with the Students' Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran.,are with the Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Parvane 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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Guan Y, Xu Y, Su H, Sun X, Li Y, Wang T. Effect of serum vitamin D on metabolic associated fatty liver disease: a large population-based study. Scand J Gastroenterol 2022; 57:862-871. [PMID: 35170370 DOI: 10.1080/00365521.2022.2039284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Several studies have revealed that serum vitamin D is an important factor for metabolic associated fatty liver disease (MAFLD), but there had been no consistent conclusion. METHODS Of 427,507 subjects who underwent health examination, 83,625 who met the inclusion criteria were included in a cross-sectional analysis. Clinical and laboratory data were collected for analysis. MAFLD was diagnosed by abdominal imaging. RESULTS Multivariate linear regression models discovered a negative association between serum vitamin D and MAFLD (OR: 0.92, 95% CI: 0.90 to 0.94, p = .001), after adjusting for other well-identified risk factors. The same result was found when serum vitamin D was handled as a categorical variable (quartile, Q1-Q4) (Q4 vs. Q1, OR: 0.82, 95% CI: 0.77 to 0.87, p < .001), and a significant linear trend was observed (p for trend <.001). After analysis, a nonlinear relationship was detected between serum vitamin D and MAFLD, with an inflection point of 2.23 (44.6 nmol/L or 17.84 ng/mL). The effect sizes and the confidence intervals on the left and right sides of the inflection point were 1.16 (1.06 to 1.28) and 0.89 (0.86 to 0.91), respectively. All interactions with MAFLD were not significant for age, sex, diabetes, hypertension, smoking and body mass index (p for interaction = .110, .558, .335, .195, .616 and .401, respectively). CONCLUSIONS There was a nonlinear relationship between serum vitamin D and MAFLD. When the serum vitamin D level was ≥44.6 nmol/L (17.84 ng/mL), a negative correlation between serum vitamin D and MAFLD was detected. Below this level, serum vitamin D might promote the progression of MAFLD.
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Affiliation(s)
- Yaqi Guan
- Department of Nursing, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yilun Xu
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Huang Su
- Department of Gastroenterology, Wenzhou Central Hospital, The dingli clinical institute of Wenzhou Medical University, Wenzhou, China
| | - Xuecheng Sun
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yanxuan Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Tingting Wang
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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Zhao H, Zhang M, Zhen Y, Tang Y. The Relationships Between Glycated Hemoglobin and Bone Turnover Markers in Patients with Type 2 Diabetes but No Diabetic Nephropathy. Int J Gen Med 2022; 15:5591-5598. [PMID: 35712058 PMCID: PMC9192782 DOI: 10.2147/ijgm.s366725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/26/2022] [Indexed: 12/03/2022] Open
Abstract
Purpose To investigate the relationships between glycated hemoglobin (HbA1c) level and bone turnover markers (BTMs) in patients with type 2 diabetes mellitus (T2DM) but no diabetic nephropathy. Patients and Methods Patients with T2DM were recruited at Hebei General Hospital in China. The participants were allocated to three groups: an HbA1c <7% group, an HbA1c 7%–9% group, and an HbA1c ≥9% group. Their general characteristics, biochemical indices, and BTM concentrations were recorded. Results The ages of the HbA1c <7% group and the HbA1c 7%–9% group were significantly higher than that of the HbA1c ≥9% group (P<0.05). The prevalence of a history of hypertension in the HbA1c 7%–9% group was significantly higher than that in the HbA1c ≥9% group. The circulating low-density lipoprotein-cholesterol concentration in the HbA1c ≥9% group and the apolipoprotein B concentration in the HbA1c 7%–9% group were significantly higher than those in the HbA1c <7% group (P<0.05). Compared with that in the HbA1c <7% group, the circulating 25-hydroxyvitamin D (25OHD) concentration was significantly lower in the HbA1c ≥9% group (P<0.05). Additionally, the circulating 25OHD and osteocalcin (OC) concentrations negatively correlated with HbA1c (P<0.05). Conclusion An increase in HbA1c is associated with gradual decreases in the circulating concentrations of 25OHD and OC.
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Affiliation(s)
- Hang Zhao
- Endocrinology Department, Hebei General Hospital, Shijiazhuang, Hebei, 050051, People's Republic of China
| | - Miaomiao Zhang
- Graduate School of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Yunfeng Zhen
- Endocrinology Department, Hebei General Hospital, Shijiazhuang, Hebei, 050051, People's Republic of China
| | - Yong Tang
- Endocrinology Department, Hebei General Hospital, Shijiazhuang, Hebei, 050051, People's Republic of China
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Association of Serum 25(OH)D with Metabolic Syndrome in Chinese Women of Childbearing Age. Nutrients 2022; 14:nu14112301. [PMID: 35684100 PMCID: PMC9182986 DOI: 10.3390/nu14112301] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/27/2022] [Accepted: 05/28/2022] [Indexed: 02/01/2023] Open
Abstract
Objective: To analyze the associations between serum 25(OH)D levels and the risk of metabolic syndrome (MetS) and its components, and the related genetic and non-genetic factors in non-diabetic women of childbearing age in China. Methods: Subjects were randomly selected from the 2015 Chinese Adult Chronic Disease and Nutrition Surveillance. The data of sociodemographic characteristics and lifestyle factors were obtained through questionnaire survey. Anthropometry was measured by trained interviewers, and fasting blood was collected to test 25-hydroxyvitamin D [25(OH)D], total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), fasting blood glucose (FBG), and other related parameters. Generalized linear mode and multivariate logistic analysis were performed to analyze the associations between serum 25(OH)D and MetS and its components, adjusting for the possible confounders. Results: Body mass index (BMI), serum alanine aminotransferase (ALT), hypersensitive C-reactive protein (hs-CRP), 25(OH)D, phosphorus (P), and parathyroid hormone (PTH) levels were associated with the number of MetS’s components. G allele carriers of GC rs2282679 had higher diastolic blood pressure (DBP) and FBG levels compared with the TT genotypes, while higher genetic risk score (GRS) seemed to be associated with reduced HDL-C level. The odds ratio (OR) for MetS in lowest group of 25(OH)D was 1.533 (0.980−2.399) after adjusting for season, district, area type, latitude, age, BMI, PTH, P, ALT, CRE, interleukin-6 (IL-6), and hs-CRP, compared with the median group, but the association was not significant. An insufficient 25(OH)D concentration (<14.22 ng/mL) was significantly related to the risk of elevated waist circumference (WC) (OR = 1.612 (1.014−2.561)) and TG (OR = 2.210 (1.318−3.706)), and reduced HDL-C (OR = 1.639 (1.206−2.229)) after adjusting for the confounders among these women. Moreover, these relationships were not affected by vitamin D metabolism-related gene polymorphisms. Conclusion: After comprehensively considering various influencing factors, significant associations between insufficient serum 25(OH)D and MetS‘s components, including elevated WC, TG, and reduced HDL-C, were observed. However, MetS, hypertension, and hyperglycemia were not found independently associated with 25(OH)D levels.
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Bennour I, Haroun N, Sicard F, Mounien L, Landrier JF. Vitamin D and Obesity/Adiposity—A Brief Overview of Recent Studies. Nutrients 2022; 14:nu14102049. [PMID: 35631190 PMCID: PMC9143180 DOI: 10.3390/nu14102049] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 12/12/2022] Open
Abstract
Observational studies classically find an inverse relationship between human plasma 25-hydroxyvitamin D concentration and obesity. However, interventional and genetic studies have failed to provide clear conclusions on the causal effect of vitamin D on obesity/adiposity. Likewise, vitamin D supplementation in obese rodents has mostly failed to improve obesity parameters, whereas several lines of evidence in rodents and prospective studies in humans point to a preventive effect of vitamin D supplementation on the onset of obesity. Recent studies investigating the impact of maternal vitamin D deficiency in women and in rodent models on adipose tissue biology programming in offspring further support a preventive metabolically driven effect of vitamin D sufficiency. The aim of this review is to summarize the state of the knowledge on the relationship between vitamin D and obesity/adiposity in humans and in rodents and the impact of maternal vitamin D deficiency on the metabolic trajectory of the offspring.
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Affiliation(s)
- Imene Bennour
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000 Marseille, France; (I.B.); (N.H.); (F.S.); (L.M.)
| | - Nicole Haroun
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000 Marseille, France; (I.B.); (N.H.); (F.S.); (L.M.)
| | - Flavie Sicard
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000 Marseille, France; (I.B.); (N.H.); (F.S.); (L.M.)
- PhenoMARS Aix-Marseille Technology Platform, CriBiom, 13000 Marseille, France
| | - Lourdes Mounien
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000 Marseille, France; (I.B.); (N.H.); (F.S.); (L.M.)
- PhenoMARS Aix-Marseille Technology Platform, CriBiom, 13000 Marseille, France
| | - Jean-François Landrier
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000 Marseille, France; (I.B.); (N.H.); (F.S.); (L.M.)
- PhenoMARS Aix-Marseille Technology Platform, CriBiom, 13000 Marseille, France
- Correspondence: ; Tel.: +33-4-9129-4275
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Vitamin D Counteracts Lipid Accumulation, Augments Free Fatty Acid-Induced ABCA1 and CPT-1A Expression While Reducing CD36 and C/EBPβ Protein Levels in Monocyte-Derived Macrophages. Biomedicines 2022; 10:biomedicines10040775. [PMID: 35453525 PMCID: PMC9028184 DOI: 10.3390/biomedicines10040775] [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: 02/22/2022] [Revised: 03/16/2022] [Accepted: 03/25/2022] [Indexed: 12/15/2022] Open
Abstract
The biologically active form of vitamin D, calcitriol (VD3), has received great attention for its extraskeletal effects, such as a protective role on the cardiovascular system. The aim of the present work is to test the capacity of VD3 to affect lipid metabolism and fatty acid accumulation in an in vitro model of monocyte (THP-1)-derived macrophages. Cells were treated for 24 h with oleic/palmitic acid (500 μM, 2:1 ratio) and different VD3 concentrations (0.1, 1, 10, 50 and 100 nM). Lipid accumulation was quantified spectrophotometrically (excitation: 544 nm, emission: 590 nm). C/EBPβ, PPAR-γ1, CD36, CPT-1A, and ABCA1 protein levels were assessed by ELISA kits at different time-points (1, 2, 4, 8, and 24 h). VD3 at 50 and 100 nM significantly reduced fatty acids accumulation in macrophages by 27% and 32%, respectively. In addition, tested at 50 nM, VD3 decreased CD36, PPAR-γ1, and C/EBPβ, while it increased ABCA1 and CPT-1A protein levels in free fatty acid-exposed cells. In conclusion, VD3 reduced fatty acid accumulation in THP-1-derived macrophages exposed to lipid excess. The anti-atherogenic effect of VD3 could be ascribable to the regulation of proteins involved in lipid transport and clearance.
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Mokhtari E, Hajhashemy Z, Saneei P. Serum Vitamin D Levels in Relation to Hypertension and Pre-hypertension in Adults: A Systematic Review and Dose–Response Meta-Analysis of Epidemiologic Studies. Front Nutr 2022; 9:829307. [PMID: 35360696 PMCID: PMC8961407 DOI: 10.3389/fnut.2022.829307] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 02/04/2022] [Indexed: 02/03/2023] Open
Abstract
Background Findings of observational studies that evaluated the association of serum vitamin D status and high blood pressure were contradictory. This meta-analysis of epidemiologic studies assessed the relation of serum vitamin D levels to hypertension (HTN) and pre-hypertension in adults. Methods We conducted a systematic search of all published articles up to March 2021, in four electronic databases (MEDLINE (PubMed), Web of Science (ISI), Embase and Scopus), and Google scholar. Seventy epidemiologic studies (10 prospective cohort, one nested case–control, and 59 cross-sectional investigations) that reported relative risks (RRs), odds ratios (ORs), hazard ratios, or prevalence ratios with 95% CIs for HTN or pre-hypertension in relation to serum vitamin D concentrations in adults were included in the analysis. Results In prospective studies, a 16% decrease in risk of hypertension was observed in participants with high levels of serum vitamin D compared to low levels (RR: 0.84; 95%CI: 0.73, 0.96; 12 effect sizes). Dose–response analysis in prospective studies revealed that each 25 nmol/L increase in serum vitamin D concentrations resulted in 5% reduced risk of HTN (RR: 0.95; 95% CI: 0.90, 1.00). Also, a significant nonlinear relationship between serum vitamin D levels and HTN was found (Pnonlinearity < 0.001). In cross-sectional investigations, highest vs. lowest level of serum vitamin D was related to reduced odds of HTN (OR: 0.84; 95%CI: 0.79, 0.90; 66 effect sizes) and pre-hypertension (OR: 0.75; 0.95%CI: 0.68, 0.83; 9 effect sizes). Dose–response analysis in these studies showed that each 25 nmol/L increase in serum vitamin D levels was related to a significant 6% reduction in odds of hypertension in all populations (RR: 0.94; 95%CI: 0.90, 0.99) and 3% in studies with representative populations (RR: 0.97; 95%CI: 0.95, 0.99). Conclusion This meta-analysis of epidemiologic studies disclosed that serum vitamin D concentrations were inversely related to the risk of HTN in adults, in a dose–response manner in both prospective cohort and cross-sectional studies. Systematic Review Registration:http://www.crd.york.ac.uk/Prospero, identifier: CRD42021251513.
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Affiliation(s)
- Elahe Mokhtari
- 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
| | - 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
| | - Parvane Saneei
- Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
- *Correspondence: Parvane Saneei ;
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Small Differences in Vitamin D Levels between Male Cardiac Patients in Different Stages of Coronary Artery Disease. J Clin Med 2022; 11:jcm11030779. [PMID: 35160231 PMCID: PMC8836728 DOI: 10.3390/jcm11030779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 12/19/2022] Open
Abstract
Cardiovascular diseases are the main cause of mortality in males older than 65 years of age. The prevalent vitamin D deficiency in the worldwide population may have multiple effects on the cardiovascular system. This study sought to determine the association between serum levels of 25-hydroxyvitamin D (25(OH)D) and the stage of coronary artery disease (CAD) in Polish male subjects. Additionally, subjects with a history of myocardial infarction (MI) were analyzed for potential differences in 25(OH)D levels in comparison with those diagnosed with stable CAD. The study was conducted prospectively in a group of 669 male patients subjected to coronarography examination. CAD stage was defined using the Coronary Artery Surgery Study Score. Patients without significant coronary lesions had significantly higher 25(OH)D levels than patients with single-, double-, or triple-vessel disease (median, 17 vs. 15 ng/mL; p < 0.01). Significantly lower levels of 25(OH)D were apparent when MI was identified as the cause of the then-current hospitalization in comparison with stable CAD, as well as in patients with a history of MI; all of these cases had lower levels of 25(OH)D in comparison with patients with no such history. Male patients with single-, double-, or triple-vessel CAD, acute coronary syndrome, or a history of MI presented lower serum 25(OH)D.
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Xing Y, Cheng T, Zhou F, Ma H. The Association Between Vitamin D and Type 2 Diabetes Mellitus Complicated with Non-Alcoholic Fatty Liver Disease: An Observational Cross-Sectional Study. Diabetes Metab Syndr Obes 2022; 15:269-280. [PMID: 35140487 PMCID: PMC8819170 DOI: 10.2147/dmso.s348870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 01/14/2022] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVE To investigate the association between vitamin D deficiency and NAFLD risk in patients with type 2 diabetes mellitus (T2DM). METHODS Overall, 434 patients with T2DM admitted to Hebei General Hospital from January 2019 to December 2019 were selected as the study subjects. According to abdominal ultrasound findings, patients were divided into the NAFLD group and the non-NAFLD group. Participants were divided into two study groups according to the 25-hydroxyvitamin D [25(OH)D] level. 25(OH)D deficiency was defined if 25(OH)D vitamin levels were <20 ng/mL. Chi-square test and one-way analysis of variance were used to compare groups. The relationship between 25(OH)D and NAFLD risk was analyzed using correlation and regression analyses. Furthermore, subgroup analyses were performed to verify the robustness of the results. RESULTS The 25(OH)D level in patients with T2DM complicated by NAFLD was significantly lower than in patients with T2DM only. Vitamin D deficiency was highly prevalent among T2DM patients with NAFLD. This study suggested that vitamin D deficiency was an independent factor for developing NAFLD in patients with T2DM. T2DM patients with vitamin D deficiency had 2.045 times higher risk of developing NAFLD than those without vitamin D deficiency. Vitamin D deficiency was associated with high NAFLD preference in T2DM patients with BMI >23kg/m2, but not those with BMI ≤23kg/m2. The significant correlation between vitamin D deficiency and NAFLD was found in participants with BMI >23kg/m2, age ≤65 years, without hypertension, TG <1.7mmol/l, HDL ≥1 mmol/l in men, ≥1.3 mmol/l in women, HBA1C ≤7%, or females. CONCLUSION This study suggests that T2DM people with BMI >23kg/m2 were more susceptible to NAFLD by vitamin D deficiency and that it is necessary to maintain optimal serum vitamin D levels in this population.
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Affiliation(s)
- Yuling Xing
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, 050017, People’s Republic of China
- Graduate School of Hebei Medical University, Shijiazhuang, 050017, People’s Republic of China
| | - Tiantian Cheng
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, 050017, People’s Republic of China
- Department of Internal Medicine, School of Clinical Medicine, North China University of Science and Technology, Tangshan, 063210, Hebei, People’s Republic of China
| | - Fei Zhou
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, 050017, People’s Republic of China
- Graduate School of Hebei Medical University, Shijiazhuang, 050017, People’s Republic of China
| | - Huijuan Ma
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, 050017, People’s Republic of China
- Hebei Key Laboratory of Metabolic Diseases, Hebei General Hospital Shijiazhuang, Hebei, 050051, People’s Republic of China
- Department of Internal Medicine, Hebei Medical University, Shijiazhuang, Hebei, 050017, People’s Republic of China
- Correspondence: Huijuan Ma, Email
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Yuan Q, Zhang R, Sun M, Guo X, Yang J, Bian W, Xie C, Miao D, Mao L. Sirt1 Mediates Vitamin D Deficiency-Driven Gluconeogenesis in the Liver via mTorc2/Akt Signaling. J Diabetes Res 2022; 2022:1755563. [PMID: 35132380 PMCID: PMC8817869 DOI: 10.1155/2022/1755563] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 12/25/2021] [Accepted: 12/29/2021] [Indexed: 12/02/2022] Open
Abstract
As an active form of vitamin D (VD), 1,25-dihydroxyvitamin D (1,25(OH)2D3) is involved in the development of many metabolic diseases, such as diabetes, autoimmune diseases, and tumours. While prospective epidemiological studies have consistently implicated VD deficiency in the regulation of glucose metabolism and insulin sensitivity, the specific mechanism remains unclear. Here, we generated 1α(OH)ase-null mice (targeted ablation of the 25-hydroxyvitamin D 1α hydroxylase enzyme) and found that these mice developed hepatic glucose overproduction, glucose intolerance, and hepatic insulin resistance accompanied by reduced Sirtuin 1 (Sirt1) expression. The chromatin immunoprecipitation (ChIP) and a luciferase reporter assay revealed that 1,25(OH)2D3-activated VD receptor (VDR) directly interacted with one VD response element (VDRE) in the Sirt1 promoter to upregulate Sirt1 transcription, triggering a cascade of serine/threonine kinase (AKT) phosphorylation at S473 and FOXO1 phosphorylation at S256. This phosphorylation cascade reduced the expression of gluconeogenic genes, eventually attenuating glucose overproduction in the liver. In addition, a signaling pathway was found to modulate gluconeogenesis involving VDR, Sirt1, Rictor (a component of mTOR complex 2 [mTorc2]), AKT, and FOXO1, and Sirt1 and FOXO1 were identified as key modulators of dysregulated gluconeogenesis due to VD deficiency.
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Affiliation(s)
- Qi Yuan
- Department of Endocrinology, The First Huaian Hospital Affiliated to Nanjing Medical University, Huai'an, 223300 Jiangsu, China
| | - Ridong Zhang
- Department of Endocrinology, The First Huaian Hospital Affiliated to Nanjing Medical University, Huai'an, 223300 Jiangsu, China
| | - Mengyue Sun
- Department of Endocrinology, The First Huaian Hospital Affiliated to Nanjing Medical University, Huai'an, 223300 Jiangsu, China
| | - Xiao Guo
- Department of Endocrinology, The First Huaian Hospital Affiliated to Nanjing Medical University, Huai'an, 223300 Jiangsu, China
| | - Jinglei Yang
- Department of Endocrinology, The First Huaian Hospital Affiliated to Nanjing Medical University, Huai'an, 223300 Jiangsu, China
| | - Wen Bian
- Department of Endocrinology, The First Huaian Hospital Affiliated to Nanjing Medical University, Huai'an, 223300 Jiangsu, China
| | - Chunfeng Xie
- Nanjing Medical University, School of Public Health, Nanjing, 210000 Jiangsu, China
| | - Dengshun Miao
- Nanjing Medical University, School of Basic Medicine, Nanjing, 210000 Jiangsu, China
| | - Li Mao
- Department of Endocrinology, The First Huaian Hospital Affiliated to Nanjing Medical University, Huai'an, 223300 Jiangsu, China
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Buchmann N, Eckstein N, Spira D, Demuth I, Steinhagen-Thiessen E, Norman K. Vitamin D insufficiency is associated with metabolic syndrome independent of insulin resistance and obesity in young adults - The Berlin Aging Study II. Diabetes Metab Res Rev 2021; 37:e3457. [PMID: 33886146 DOI: 10.1002/dmrr.3457] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 02/15/2021] [Accepted: 02/18/2021] [Indexed: 12/29/2022]
Abstract
PURPOSE Age-related changes affect vitamin D absorption and metabolism. Low 25-hydroxyvitamin D concentrations have been reported as risk factor for the development of metabolic syndrome (MetS). However, recent evaluations suggest this association might be explained by obesity or insulin resistance (IR) in subjects with MetS. Our aim was to analyze associations between vitamin D insufficiency and MetS in a young cohort without diabetes and two senior cohorts with and without diabetes. METHODS Four hundred sixteen young and 1357 older BASE-II participants were analyzed. Type 2 diabetes (T2D) was defined according to European Society of Cardiology (ESC) guidelines, MetS as suggested by International Diabetes Federation/American Heart Association/National Heart, Lung and Blood Institute (IDF/AHA/NHLBI 2009). Vitamin D insufficiency was defined as 25-hydroxyvitamin D concentrations <50 nmol/L. Among other confounders, BMI and IR were taken into account. RESULTS MetS was prevalent in 7.7% of the young and in 35.6% of the older BASE-II participants and T2D occurred in 12.7% of the older participants. In young subjects without diabetes, vitamin D insufficiency was associated with an independent 3.2-fold increased odds of having MetS (OR: 3.2 CI: 1.0-8.7; p = 0.042). However, in the older participants, this association was lost once BMI was taken into account among those with diabetes, and once IR was taken into account among those without diabetes. CONCLUSION Independent associations between vitamin D insufficiency and MetS were only found among young subjects without diabetes. In the older adults, BMI annihilated these associations among subjects without diabetes as did HOMA-IR among subjects with diabetes.
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Affiliation(s)
- Nikolaus Buchmann
- Department of Cardiology, Charité - University Medicine Berlin (Campus Benjamin Franklin), Berlin, Germany
| | - Nils Eckstein
- Department of Endocrinology and Metabolic Diseases (Including Division of Lipid Metabolism), Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Dominik Spira
- Department of Endocrinology and Metabolic Diseases (Including Division of Lipid Metabolism), Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Ilja Demuth
- Department of Endocrinology and Metabolic Diseases (Including Division of Lipid Metabolism), Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BCRT - Berlin Institute of Health Center for Regenerative Therapies, Berlin, Germany
| | - Elisabeth Steinhagen-Thiessen
- Department of Endocrinology and Metabolic Diseases (Including Division of Lipid Metabolism), Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Kristina Norman
- Department of Nutrition and Gerontology, German Institute for Human Nutrition Potsdam Rehbrücke, Nuthetal, Germany
- Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
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Valle M, Mitchell PL, Pilon G, Varin T, Hénault L, Rolin J, McLeod R, Gill T, Richard D, Vohl MC, Jacques H, Gagnon C, Bazinet L, Marette A. Salmon peptides limit obesity-associated metabolic disorders by modulating a gut-liver axis in vitamin D-deficient mice. Obesity (Silver Spring) 2021; 29:1635-1649. [PMID: 34449134 DOI: 10.1002/oby.23244] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/27/2021] [Accepted: 05/27/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE This study investigated the effects of a low-dose salmon peptide fraction (SPF) and vitamin D3 (VitD3 ) in obese and VitD3 -deficient mice at risk of metabolic syndrome (MetS). METHODS Obese and VitD3 -deficient low-density lipoprotein receptor (LDLr)-/- /apolipoprotein B100 (ApoB)100/100 mice were treated with high-fat high-sucrose diets, with 25% of dietary proteins replaced by SPF or a nonfish protein mix (MP). The SPF and MP groups received a VitD3 -deficient diet or a supplementation of 15,000 IU of VitD3 per kilogram of diet. Glucose homeostasis, atherosclerosis, nonalcoholic fatty liver disease, and gut health were assessed. RESULTS VitD3 supplementation increased plasma 25-hydroxyvitamin D to optimal status whereas the VitD3 -deficient diet maintained moderate deficiency. SPF-treated groups spent more energy and accumulated less visceral fat in association with an improved adipokine profile. SPF lowered homeostatic model assessment of insulin resistance compared with MP, suggesting that SPF can improve insulin sensitivity. SPF alone blunted hepatic and colonic inflammation, whereas VitD3 supplementation attenuated ileal inflammation. These effects were associated with changes in gut microbiota such as increased Mogibacterium and Muribaculaceae. CONCLUSIONS SPF treatment improves MetS by modulating hepatic and gut inflammation along with gut microbiota, suggesting that SPF operates through a gut-liver axis. VitD3 supplementation has limited influence on MetS in this model.
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Affiliation(s)
- Marion Valle
- Faculty of Medicine, Québec Heart and Lung Institute, Laval University, Québec City, Québec, Canada
- Institute of Nutrition and Functional Foods, Laval University, Québec City, Québec, Canada
| | - Patricia L Mitchell
- Faculty of Medicine, Québec Heart and Lung Institute, Laval University, Québec City, Québec, Canada
- Institute of Nutrition and Functional Foods, Laval University, Québec City, Québec, Canada
| | - Geneviève Pilon
- Faculty of Medicine, Québec Heart and Lung Institute, Laval University, Québec City, Québec, Canada
- Institute of Nutrition and Functional Foods, Laval University, Québec City, Québec, Canada
| | - Thibault Varin
- Faculty of Medicine, Québec Heart and Lung Institute, Laval University, Québec City, Québec, Canada
- Institute of Nutrition and Functional Foods, Laval University, Québec City, Québec, Canada
| | - Loïc Hénault
- Institute of Nutrition and Functional Foods, Laval University, Québec City, Québec, Canada
- Department of Food Sciences, Laboratory of Food Processing and ElectroMembrane Processes, Laval University, Québec City, Québec, Canada
| | - Jonathan Rolin
- Process Engineering and Applied Science, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Roger McLeod
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Tom Gill
- Process Engineering and Applied Science, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Denis Richard
- Faculty of Medicine, Québec Heart and Lung Institute, Laval University, Québec City, Québec, Canada
| | - Marie-Claude Vohl
- Institute of Nutrition and Functional Foods, Laval University, Québec City, Québec, Canada
- School of Nutrition, Laval University, Québec, Québec, Canada
| | - Hélène Jacques
- Institute of Nutrition and Functional Foods, Laval University, Québec City, Québec, Canada
- School of Nutrition, Laval University, Québec, Québec, Canada
| | - Claudia Gagnon
- Faculty of Medicine, Québec Heart and Lung Institute, Laval University, Québec City, Québec, Canada
- Institute of Nutrition and Functional Foods, Laval University, Québec City, Québec, Canada
- Endocrinology and Nephrology Unit, CHU de Québec Research Centre, Québec City, Québec, Canada
| | - Laurent Bazinet
- Institute of Nutrition and Functional Foods, Laval University, Québec City, Québec, Canada
- Department of Food Sciences, Laboratory of Food Processing and ElectroMembrane Processes, Laval University, Québec City, Québec, Canada
| | - André Marette
- Faculty of Medicine, Québec Heart and Lung Institute, Laval University, Québec City, Québec, Canada
- Institute of Nutrition and Functional Foods, Laval University, Québec City, Québec, Canada
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Wang X, Jiang L, Shao X. Association Analysis of Insulin Resistance and Osteoporosis Risk in Chinese Patients with T2DM. Ther Clin Risk Manag 2021; 17:909-916. [PMID: 34511917 PMCID: PMC8418372 DOI: 10.2147/tcrm.s328510] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 08/26/2021] [Indexed: 02/06/2023] Open
Abstract
Background To explore the relationship between insulin resistance and osteoporosis risk in Chinese patients with type 2 diabetes mellitus (T2DM). Methods A total of 234 T2DM patients were retrospectively analyzed, and their lumbar bone mineral density (BMD) and insulin resistance using C-peptide-based homeostasis model of insulin resistance [HOMA-IR (CP)] were assessed. Univariate and multivariable logistic regression methods were used to evaluate the association between HOMA-IR (CP) and osteoporosis, and subgroup analysis was performed on female and male patients. Results After fully adjusting the covariates, the association between HOMA-IR (CP) and osteoporosis was only significant in female patients (P = 0.022); the interaction effect with gender was significant (P for interaction <0.05). Curve fitting showed that the relationship between HOMA-IR (CP) and osteoporosis in women was nonlinear. When HOMA-IR (CP) is <4.00, its effect on osteoporosis was not significant (P = 0.474); when HOMA-IR (CP) is >4.00, the risk of osteoporosis increased significantly, with OR = 26.88 (95% CI: 2.75-262.69, P = 0.005). The relationship between insulin resistance and osteoporosis risk in T2DM patients is significantly affected by gender. Conclusion The higher the degree of insulin resistance in female patients, the greater the risk of osteoporosis, but the two are not linearly associated.
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Affiliation(s)
- Xinshui Wang
- Department of Endocrinology, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, People's Republic of China
| | - Lijuan Jiang
- Department of Clinical Laboratory, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, People's Republic of China
| | - Xiaonan Shao
- Department of Nuclear Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, People's Republic of China
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Park E, Park EY. Inverse Association between Serum 25-hydroxyvitamin D Levels and Risk of Suspected Non-Alcoholic Fatty Liver Disease in Obese Population. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:8682. [PMID: 34444431 PMCID: PMC8394297 DOI: 10.3390/ijerph18168682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/12/2021] [Accepted: 08/15/2021] [Indexed: 12/30/2022]
Abstract
BACKGROUND Worldwide, vitamin D deficiency is a public health issue and the prevalence of obesity and non-alcoholic fatty liver disease (NAFLD) are rapidly increasing. There are a limited number of studies assessing the association between serum levels of 25-hydroxyvitamin D (25(OH)D) and NAFLD risk in obese population. OBJECTIVE We evaluated the associations between serum 25(OH)D levels and risk of suspected NAFLD after stratification by obesity using data from the Korea National Health and Nutrition Examination Survey (KNHANES) 2008-2014. METHODS This study included 25,755 subjects without significant alcohol consumption for the serum alanine aminotransferase (ALT) and hepatic steatosis index (HSI) analyses (8922 subjects for the serum gamma-glutamyl transferase (GGT) and fatty liver index (FLI) analyses), based on a cross-sectional study design. Serum 25(OH)D levels were measured using a Gamma counter with radioimmunoassay. A survey logistic regression model was applied to estimate ORs and 95% CIs. Restricted cubic smoothing splines were applied to evaluate nonlinear associations. RESULTS The risk of suspected NAFLD was reduced per unit of natural log-transformed serum 25(OH)D concentration in obese individuals (OR [95% (CI)]; for ALT, 0.80 [0.67, 0.96]; for GGT, 0.70 [0.49, 0.99; for FLI, 0.68 [0.47, 1.01]; for HSI, 0.70 [0.56, 0.87]). The ORs [95% CI] of suspected NAFLD changed across the quartiles: for serum ALT, from 1.02 [0.85, 1.23] to 0.72 [0.59, 0.87]; for serum GGT, from 0.79 [0.56, 1.13] to 0.64 [0.44, 0.92]; for FLI, from 0.98 [0.67, 1.44] to 0.70 [0.48, 1.02]; and for HSI, from 0.91 [0.73, 1.14] to 0.65 [0.52, 0.81] with dose-response relationships (all p for trend < 0.01). CONCLUSIONS This study suggests that vitamin D sufficiency for public health should be emphasized in order to prevent adverse health effects in obese populations.
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Affiliation(s)
- Eunjung Park
- Department of Public Health Sciences, Graduate Scholl of Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea;
| | - Eun Young Park
- Division of Cancer Prevention, National Cancer Control Institute, National Cancer Center, 323, Ilsan-ro, Ilsandong-gu, Goyang-si 10408, Korea
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Hajhashemy Z, Shahdadian F, Moslemi E, Mirenayat FS, Saneei P. Serum vitamin D levels in relation to metabolic syndrome: A systematic review and dose-response meta-analysis of epidemiologic studies. Obes Rev 2021; 22:e13223. [PMID: 33829636 DOI: 10.1111/obr.13223] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 02/04/2021] [Accepted: 02/04/2021] [Indexed: 12/11/2022]
Abstract
Several epidemiological studies examined the association of serum vitamin D with metabolic syndrome (MetS), but the findings were inconsistent. We conducted a systematic review and dose-response meta-analysis to quantify the association between blood vitamin D levels and MetS in adults. A systematic search up to December 2020 was conducted in MEDLINE (PubMed), ISI (Web of Science), Scopus, and Google Scholar databases for epidemiological studies that assessed the relation of serum 25-hydroxyvitamin D (as the exposure) and MetS (as the outcome) in adults. Eligible cross-sectional studies were restricted to those with representative populations. Finally, 43 studies were included in the analysis (38 cross-sectional, one nested case-control, and four cohorts studies). Combining 41 effect sizes from 38 cross-sectional studies included 298,187 general adult population revealed that the highest level of serum vitamin D, compared with the lowest level, was significantly related to a 43% decreased odds of MetS in developed countries (odds ratio [OR]: 0.57; 95% confidence interval [CI]: 0.49-0.65) and 40% in developing countries (OR: 0.60; 95% CI: 0.52-0.70). Linear dose-response analysis (including 222,175 healthy individuals and 39,308 MetS patients) revealed that each 25 nmol/L increase in serum vitamin D level was significantly associated with a 15% decreased odds of MetS (OR: 0.85; 95% CI: 0.80-0.91); however, we found no significant nonlinear association. Meta-analysis of five prospective studies with 11,019 participants revealed no significant relation (relative risk [RR]: 0.70; 95% CI: 0.37-1.32). This meta-analysis indicated an inverse association between serum vitamin D concentrations and risk of MetS in general adult populations in cross-sectional studies in a dose-response manner. However, no significant association was found in a small number of cohorts. More prospective studies are needed to confirm the causality of this relationship.
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Affiliation(s)
- Zahra Hajhashemy
- Department of Community Nutrition, School of Nutrition and Food Sciences, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Farnaz Shahdadian
- Department of Community Nutrition, School of Nutrition and Food Sciences, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Elham Moslemi
- Department of Biochemistry and Diet Therapy, Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fateme Sadat Mirenayat
- Department of Community Nutrition, School of Nutrition and Food Sciences, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Parvane Saneei
- Department of Community Nutrition, School of Nutrition and Food Sciences, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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Heo NJ, Park HE, Yoon JW, Kwak MS, Yang JI, Chung SJ, Yim JY, Chung GE. The Association between Vitamin D and Nonalcoholic Fatty Liver Disease Assessed by Controlled Attenuation Parameter. J Clin Med 2021; 10:jcm10122611. [PMID: 34199258 PMCID: PMC8231966 DOI: 10.3390/jcm10122611] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/10/2021] [Accepted: 06/11/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND An association between nonalcoholic fatty liver disease (NAFLD) and low vitamin D levels has been suggested. We investigated the relationship between vitamin D and NAFLD assessed by controlled attenuation parameter (CAP). METHODS We conducted a retrospective cohort study of apparently healthy subjects who underwent Fibroscan during health screening tests. NAFLD was diagnosed using CAP values. RESULTS Among the 1202 subjects (mean age 57.2 years, 60.6% male), 630 (52.4%) subjects had NAFLD with CAP ≥ 248 dB/m. Multivariable analysis was conducted after adjusting for metabolic risk factors including diabetes, hypertension, hypercholesterolemia, body mass index, high-density lipoprotein cholesterol, triglyceride and smoking. Higher vitamin D levels showed a lower risk of NAFLD compared to the lowest quartile of vitamin D in a dose-dependent manner (OR 0.68, 95% CI 0.47-1.00 in Q2 vs. Q1; OR 0.65, 95% CI 0.44-0.94 in Q3 vs. Q1; and OR 0.64, 95% CI 0.44-0.94 in Q4 vs. Q1). The highest quartile of vitamin D showed a decreased risk of a severe grade of steatosis (CAP ≥ 302 dB/m) compared to the lowest quartile (OR 0.52, 95% CI 0.31-0.87 in Q4 vs. Q1). CONCLUSIONS Higher levels of serum vitamin D were associated with a decreased risk of CAP-defined NAFLD, compared to low levels of serum vitamin D. The association between NAFLD and vitamin D suggests that vitamin D may exert a protective role against NAFLD.
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Affiliation(s)
- Nam Ju Heo
- Department of Nephrology, Internal Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul 06236, Korea;
| | - Hyo Eun Park
- Department of Cardiology, Internal Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul 06236, Korea;
| | - Ji Won Yoon
- Department of Endocrinology, Internal Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul 06236, Korea;
| | - Min-Sun Kwak
- Department of Gastroenterology and Hepatology, Internal Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul 03080, Korea; (M.-S.K.); (J.I.Y.); (S.J.C.); (J.Y.Y.)
| | - Jong In Yang
- Department of Gastroenterology and Hepatology, Internal Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul 03080, Korea; (M.-S.K.); (J.I.Y.); (S.J.C.); (J.Y.Y.)
| | - Su Jin Chung
- Department of Gastroenterology and Hepatology, Internal Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul 03080, Korea; (M.-S.K.); (J.I.Y.); (S.J.C.); (J.Y.Y.)
| | - Jeong Yoon Yim
- Department of Gastroenterology and Hepatology, Internal Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul 03080, Korea; (M.-S.K.); (J.I.Y.); (S.J.C.); (J.Y.Y.)
| | - Goh Eun Chung
- Department of Gastroenterology and Hepatology, Internal Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul 03080, Korea; (M.-S.K.); (J.I.Y.); (S.J.C.); (J.Y.Y.)
- Correspondence: ; Tel.: +82-(0)2-2112-5741; Fax: +82-(0)2-2112-5635
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Mohammadi S, Hajhashemy Z, Saneei P. Serum vitamin D levels in relation to type-2 diabetes and prediabetes in adults: a systematic review and dose-response meta-analysis of epidemiologic studies. Crit Rev Food Sci Nutr 2021; 62:8178-8198. [PMID: 34076544 DOI: 10.1080/10408398.2021.1926220] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Findings of observational studies that investigated the relationship between vitamin D deficiency and abnormal glucose homeostasis were contradictory. This meta-analysis of epidemiologic studies evaluated the association of vitamin D status and risk of type-2 diabetes (T2D) and prediabetes in adults. METHODS A systematic search was conducted on all published articles in five electronic databases (including MEDLINE/PubMed, EMBASE, Institute for Scientific Information, Scopus and Google scholar), up to August 2020. Twenty-eight prospective cohort and nested case-control studies and 83 cross-sectional and case-control investigations that reported relative risks (RRs) or odds ratios (ORs) with 95% confidence intervals (CIs) for abnormal glucose homeostasis in relation to serum vitamin D levels in adults were included in the analysis. RESULTS In prospective studies, high versus low level of vitamin D was respectively associated with significant 35%, 30% and 51% decrease in risk of T2D (RR:0.65; 95%CI: 0.55-0.76; 27 effect sizes), combined T2D and pre-diabetes (RR:0.70; 95%CI: 0.52-0.95; 9 effect sizes) and pre-diabetes (RR:0.49; 95%CI: 0.26-0.93; 2 effect sizes). These inverse associations were significant in almost all subgroups. Dose-response analysis in prospective studies showed that each 10 ng/ml increase in serum vitamin D levels resulted in 12% and 11% reduced risk of T2D (RR:0.88; 95%CI: 0.83-0.94) and combined T2D and prediabetes (RR:0.89; 95%CI: 0.87-0.92), respectively. In cross-sectional and case-control studies, highest versus lowest level of serum vitamin D was linked to reduced odds of T2D (OR:0.64; 95%CI: 0.57-0.72; 42 effect sizes) and combined T2D and pre-diabetes (OR:0.79; 95%CI: 0.74-0.85; 59 effect sizes); but not pre-diabetes (OR:0.64; 95%CI: 0.17-2.37; 11 effect sizes). CONCLUSION This meta-analysis of epidemiologic studies disclosed that serum vitamin D level was reversely associated with the risk of T2D and combined T2D and prediabetes in adults, in a dose-response manner. However, the association was not remarkable for pre-diabetes.
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Affiliation(s)
- Sobhan Mohammadi
- 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
| | - 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
| | - 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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Han YY, Hsu SHJ, Su TC. Association between Vitamin D Deficiency and High Serum Levels of Small Dense LDL in Middle-Aged Adults. Biomedicines 2021; 9:464. [PMID: 33923190 PMCID: PMC8145029 DOI: 10.3390/biomedicines9050464] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 11/29/2022] Open
Abstract
Recent studies suggested a potential link between vitamin D deficiency and cardiovascular risk factors, including dyslipidemia. This study aimed to investigate the association between serum 25(OH)D levels and atherogenic lipid profiles, specifically, that of small dense low-density lipoprotein-cholesterol (sdLDL-C). From 2009 to 2011, a total of 715 individuals aged 35-65 without evident cardiovascular disease (CVD) were enrolled. Their levels of serum 25(OH)D and lipid profiles were measured. Vitamin D deficiency was found to be more common in females, smokers, alcohol drinkers, individuals at a younger age, and those who do not exercise regularly. The analysis of lipid profiles revealed that high sdLDL-C levels were associated with low serum vitamin D levels and were more common among cigarette smokers; alcohol drinkers; individuals with hypertension; individuals with high BMI; and those with high levels of fasting blood glucose, triglycerides, LDL-C, and VLDL-C. The use of multivariate logistic regression verified a strong negative correlation between low vitamin D status (serum 25(OH)D < 15 ng/mL) and the three identified biomarkers of atherogenic dyslipidemia: high serum levels of sdLDL-C, triglycerides, and VLDL-C. This study provides strong evidence that vitamin D deficiency is associated with atherogenic dyslipidemia, and in particular, high sdLDL-C levels in middle-aged adults without CVD.
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Affiliation(s)
- Yin-Yi Han
- Department of Anesthesiology, National Taiwan University Hospital, Taipei 100225, Taiwan;
- Department of Traumatology, National Taiwan University Hospital, Taipei 100225, Taiwan
| | - Sandy Huey-Jen Hsu
- Department of Laboratory Medicine, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei 100225, Taiwan;
| | - Ta-Chen Su
- Department of Environmental and Occupational Medicine, National Taiwan University Hospital, Taipei 100225, Taiwan
- Department of Internal Medicine and Cardiovascular Center, National Taiwan University Hospital, Taipei 100225, Taiwan
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29
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Valle M, Mitchell PL, Pilon G, St-Pierre P, Varin T, Richard D, Vohl MC, Jacques H, Delvin E, Levy E, Gagnon C, Bazinet L, Marette A. Cholecalciferol Supplementation Does Not Prevent the Development of Metabolic Syndrome or Enhance the Beneficial Effects of Omega-3 Fatty Acids in Obese Mice. J Nutr 2021; 151:1175-1189. [PMID: 33851198 PMCID: PMC8112766 DOI: 10.1093/jn/nxab002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/30/2020] [Accepted: 01/04/2021] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Cholecalciferol (D3) may improve inflammation, and thus provide protection from cardiometabolic diseases (CMD), although controversy remains. Omega-3 fatty acids (ω-3FA) may also prevent the development of CMD, but the combined effects of ω-3FA and D3 are not fully understood. OBJECTIVES We determined the chronic independent and combined effects of D3 and ω-3FA on body weight, glucose homeostasis, and markers of inflammation in obese mice. METHODS We gave 8-week-old male C57BL/6J mice, which had been fed a high-fat, high-sucrose (HF) diet (65.5% kcal fat, 19.8% kcal carbohydrate, and 14% kcal protein) for 12 weeks, either a standard D3 dose (+SD3; 1400 IU D3/kg diet) or a high D3 dose (+HD3; 15,000 IU D3/kg diet). We fed 1 +SD3 group and 1 +HD3 group with 4.36% (w/w) fish oil (+ω-3FA; 44% eicosapentaenoic acid, 25% docosahexaenoic acid), and fed the other 2 groups with corn oil [+omega-6 fatty acids (ω-6FA)]. A fifth group was fed a low-fat (LF; 15.5% kcal) diet. LF and HF+ω-6+SD3 differences were tested by a Student's t-test and HF treatment differences were tested by a 2-way ANOVA. RESULTS D3 supplementation in the +HD3 groups did not significantly increase plasma total 25-hydroxyvitamin D and 25-hydroxyvitamin D3 [25(OH)D3] versus the +SD3 groups, but it increased 3-epi-25-hydroxyvitamin D3 levels by 3.4 ng/mL in the HF+ω-6+HD3 group and 4.0 ng/mL in the HF+ω-3+HD3 group, representing 30% and 70%, respectively, of the total 25(OH)D3 increase. Energy expenditure increased in those mice fed diets +ω-3FA, by 3.9% in the HF+ω-3+SD3 group and 7.4% in the HF+ω-3+HD3 group, but it did not translate into lower body weight. The glucose tolerance curves of the HF+ω-3+SD3 and HF+ω-3+HD3 groups were improved by 11% and 17%, respectively, as compared to the respective +ω-6FA groups. D3 supplementation, within the ω-3FA groups, altered the gut microbiota by increasing the abundance of S24-7 and Lachnospiraceae taxa compared to the standard dose, while within the ω-6FA groups, D3 supplementation did not modulate specific taxa. CONCLUSIONS Overall, D3 supplementation does not prevent CMD or enhance the beneficial effects of ω-3FA in vitamin D-sufficient obese mice.
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Affiliation(s)
- Marion Valle
- Québec Heart and Lung Institute Research Centre, Faculty of Medicine, Laval University, Québec City, QC, Canada,Institute of Nutrition and Functional Foods, Laval University, Québec City, QC, Canada
| | - Patricia L Mitchell
- Québec Heart and Lung Institute Research Centre, Faculty of Medicine, Laval University, Québec City, QC, Canada,Institute of Nutrition and Functional Foods, Laval University, Québec City, QC, Canada
| | - Geneviève Pilon
- Québec Heart and Lung Institute Research Centre, Faculty of Medicine, Laval University, Québec City, QC, Canada,Institute of Nutrition and Functional Foods, Laval University, Québec City, QC, Canada
| | - Philippe St-Pierre
- Québec Heart and Lung Institute Research Centre, Faculty of Medicine, Laval University, Québec City, QC, Canada,Institute of Nutrition and Functional Foods, Laval University, Québec City, QC, Canada
| | - Thibault Varin
- Québec Heart and Lung Institute Research Centre, Faculty of Medicine, Laval University, Québec City, QC, Canada,Institute of Nutrition and Functional Foods, Laval University, Québec City, QC, Canada
| | - Denis Richard
- Québec Heart and Lung Institute Research Centre, Faculty of Medicine, Laval University, Québec City, QC, Canada,Department of Medicine, Laval University, Québec City, QC, Canada
| | - Marie-Claude Vohl
- Institute of Nutrition and Functional Foods, Laval University, Québec City, QC, Canada,School of Nutrition, Laval University, Québec, QC, Canada
| | - Hélène Jacques
- Institute of Nutrition and Functional Foods, Laval University, Québec City, QC, Canada,School of Nutrition, Laval University, Québec, QC, Canada
| | - Edgar Delvin
- Department of Nutrition and Biochemistry, Sainte Justine Hospital Research Centre, University of Montreal, Montreal, QC, Canada
| | - Emile Levy
- Institute of Nutrition and Functional Foods, Laval University, Québec City, QC, Canada,Department of Nutrition and Biochemistry, Sainte Justine Hospital Research Centre, University of Montreal, Montreal, QC, Canada
| | - Claudia Gagnon
- Québec Heart and Lung Institute Research Centre, Faculty of Medicine, Laval University, Québec City, QC, Canada,Institute of Nutrition and Functional Foods, Laval University, Québec City, QC, Canada,Department of Medicine, Laval University, Québec City, QC, Canada,Endocrinology and Nephrology Unit, Centre hospitalier universitaire de Québec Research Centre, Québec City, QC, Canada
| | - Laurent Bazinet
- Institute of Nutrition and Functional Foods, Laval University, Québec City, QC, Canada,Department of Food Sciences, Laboratory of Food Processing and ElectroMembrane Processes, Laval University, Québec City, QC, Canada
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Sun H, Shi Y, Shang Y, Chen X, Xia F. MicroRNA‑378d inhibits Glut4 by targeting Rsbn1 in vitamin D deficient ovarian granulosa cells. Mol Med Rep 2021; 23:369. [PMID: 33760197 PMCID: PMC7985995 DOI: 10.3892/mmr.2021.12008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 02/01/2021] [Indexed: 11/23/2022] Open
Abstract
Vitamin D (VD) is not only associated with bone growth and development, but is also closely associated with numerous other pathological conditions. The present study aimed to investigate the effect of microRNA (miRNA/miR)-378d on ovarian granulosa cells by regulating the round spermatid basic protein 1 (Rsbn1) in the absence of VD. The abnormal expression of miRNAs in ovarian tissues of the VD-deficient mouse was analyzed using transcriptome sequencing. miR-378d, glucose transporter 4 (Glut4) and aromatase (Cyp19a) expression levels were examined via reverse transcription-quantitative (RT-q)PCR and western blotting. The expression levels of Rsbn1, Glut4 and Cyp19a were detected in transfected mouse ovarian granulosa cells. The targeting regulation between miR-378d and Rsbn1 was verified using double reporter gene assay and functional rescue experiments. Among the 672 miRNAs that were differentially expressed, cluster analysis revealed that 17 were significantly upregulated and 16 were significantly downregulated. Moreover, miR-378d showed significant upregulation, which was further verified via RT-qPCR. It was identified that the protein expression level of Rsbn1 was significantly downregulated. Furthermore, Glut4 mRNA expression was significantly decreased in the mimic group but markedly increased in the inhibitor group. By contrast, the mRNA expression levels of Rsbn1 and Cyp19a did not demonstrate any significant difference. The western blotting results indicated that the protein expression levels of Rsbn1 and Glut4 were decreased and increased, respectively, while Cyp19a did not show any significant change. In addition, the double reporter gene experiments confirmed that Rsbn1 was the target gene of miR-378d. Collectively, the present results demonstrated that miR-378d was abnormally overexpressed in the ovarian tissues of the VD-deficient mice, and that miR-378d could inhibit Glut4 production by targeting Rsbn1, which may lead to insulin resistance.
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Affiliation(s)
- Huiting Sun
- Department of Reproductive Center, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Yichao Shi
- Department of Reproductive Center, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu 213000, P.R. China
| | - Yuwei Shang
- Department of Reproductive Center, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu 213000, P.R. China
| | - Xia Chen
- Department of Reproductive Center, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu 213000, P.R. China
| | - Fei Xia
- Department of Reproductive Center, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
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31
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Bhatt SP, Guleria R. Polymorphisms in vitamin D receptor and parathyroid hormone genes in the development and progression of obstructive sleep apnea in Asian Indians. Nutrition 2021; 89:111237. [PMID: 33895557 DOI: 10.1016/j.nut.2021.111237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/20/2021] [Accepted: 03/01/2021] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Vitamin D plays a role in multiple aspects of human physiology, and vitamin D receptor (VDR) and parathyroid hormone (PTH) genes are associated with obesity. No data are available, to our knowledge, on the possible relationship between obstructive sleep apnea (OSA) and genetic variations of VDR and PTH genes. This study aimed to assess the significance of vitamin D and PTH, as well as VDR, and PTH gene polymorphisms with body composition and biochemical investigations in Asian Indians with and without OSA. METHODS In this study, 120 obese subjects with OSA, 110 obese subjects without OSA, and 70 nonobese subjects without OSA were recruited. Clinical, body composition, anthropometry, and biochemical investigations, as well as a full overnight polysomnography were measured. Genotyping related to VDR (BsmI, ApaI FokI, and TaqI) and PTH (BstBI and DraII) genes were investigated with a quantitative real-time polymerase chain reaction. RESULTS The mean values of the lower serum 25(OH) D (12.9 ± 3.8; P = 0.0001) and higher serum PTH levels (61.9 ± 12.5; P = 0.0001) were observed in obese subjects with OSA. There was an indirect correlation between serum 25(OH) D levels and OSA severity (P < 0.001). VDR (BsmI and FokI) and PTH (BstBI and DraII) genes were significantly associated with OSA (P < 0.05). Analyses of VDR haplotype combination variants (BBFFAATt [odds ratio: 3.45; 95% confidence interval, 0.986-4.567] and BbFFAaTt [odds ratio: 2.86; 95% confidence interval, 1.345-4.981) were more frequent in obese subjects with OSA (P = 0.001). The BBDD and bbDd haplotypes of the PTH gene seems to be a predisposing factor for OSA (P < 0.05). CONCLUSIONS Lower serum 25(OH) D levels were significantly observed in patients with OSA and correlate with disease severity. Also, VDR and PTH mutations were found to be highly related with OSA in Asian Indians.
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Affiliation(s)
- Surya Prakash Bhatt
- Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India.
| | - Randeep Guleria
- Department of Pulmonary, Critical Care and Sleep Medicine, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
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Namakin K, Hosseini M, Zardast M, Mohammadifard M. Vitamin D Effect on Ultrasonography and Laboratory Indices and Biochemical Indicators in the Blood: an Interventional Study on 12 to 18-Year-Old Children with Fatty Liver. Pediatr Gastroenterol Hepatol Nutr 2021; 24:187-196. [PMID: 33833974 PMCID: PMC8007841 DOI: 10.5223/pghn.2021.24.2.187] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 11/14/2020] [Accepted: 11/16/2020] [Indexed: 12/13/2022] Open
Abstract
PURPOSE The rising prevalence of childhood obesity in the past decades has caused non-alcoholic fatty liver disease (NAFLD) to become the most common cause of pediatric chronic liver disease worldwide. This study was aimed at determining the effect of vitamin D (Vit D) on ultrasonography and laboratory indices of NAFLD and some blood biochemical indicators in children. METHODS In this interventional study liver ultrasonography was performed in 200 children with overweight and obesity. A 108 had fatty liver among which 101 were randomly divided into two groups of study (n=51) and control (n=50). The study group was treated with Vit D, 50000 U once a week whereas the control group received placebo with the same dose and package, both for 12 weeks. At the end of the intervention lab tests and ultrasound study was performed once again to evaluate the response to treatment. RESULTS It was found out that Vit D supplementation improved the fatty liver grade in the study group. The mean changes in hemoglobin (Hb), uric acid, highdensity lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), insulin, albumin and alanine aminotransferase (ALT) was significantly higher in the study group compared to controls (p<0.05). After the intervention and means adjustment, a significant difference was obtained in HDL-C, insulin, LDL-C and homeostasis model assessment of insulin resistance (HOMA-IR) between the two groups. CONCLUSION Vit D supplementation in addition to improving the fatty liver grade in ultrasonography and increasing the blood Vit D level, increases the HDL and Hb level besides decreasing uric acid, LDL, HOMA-IR, insulin and ALT levels.
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Affiliation(s)
- Kokab Namakin
- Birjand Atherosclerosis and Coronary Artery Research Center, Birjand University of Medical Sciences (BUMS), Birjand, Iran
| | - Mahya Hosseini
- Department of Pediatric, Student Research Center Birjand University of Medical Sciences, Birjand, Iran
| | - Mahmoud Zardast
- Birjand Atherosclerosis and Coronary Artery Research Center, Birjand University of Medical Sciences (BUMS), Birjand, Iran
| | - Mahyar Mohammadifard
- Fellowship of Interventional Radiology, Birjand University of Medical Sciences, Birjand, Iran
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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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Agarwal S, Tooze JA, Bauer DC, Cauley JA, Harris TB, Koster A, Womack CR, Kritchevsky SB, Houston DK. Association between 25-Hydroxyvitamin D and Metabolic Syndrome in Older Adults: The Health, Aging and Body Composition Study. Int J Endocrinol 2021; 2021:6671823. [PMID: 33777141 PMCID: PMC7981173 DOI: 10.1155/2021/6671823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 02/13/2021] [Accepted: 03/04/2021] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE Low 25-hydroxyvitamin D (25[OH]D) levels and metabolic syndrome (MetS) are prevalent among older adults; however, longitudinal studies examining 25(OH)D status and MetS are lacking. We explore the association of 25(OH)D levels with prevalent and incident MetS in white and black older adults. Research Design and Methods. A total of 1620 white and 1016 black participants aged 70-79 years from the Health ABC cohort with measured 25(OH)D levels and data on MetS and covariates of interest were examined. The association between 25(OH)D levels and prevalent MetS at baseline and incident MetS at 6-year follow-up was examined in whites and blacks separately using logistic regression adjusting for demographics, lifestyle factors, and renal function. RESULTS At baseline, 635 (39%) white and 363 (36%) black participants had prevalent MetS. In whites, low 25(OH)D levels were associated with prevalent MetS (adjusted OR (95% CI), 1.85 (1.47, 2.34)) and 1.96 (1.46, 2.63) for 25(OH)D of 20-<30 and <20 vs. ≥30 ng/ml, respectively). The association was attenuated after adjustment for BMI but remained significant. No association was found between 25(OH)D levels and prevalent MetS in blacks. Among those without MetS at baseline (765 whites, 427 blacks), 150 (20%) whites and 87 (20%) blacks had developed MetS at 6-year follow-up. However, 25(OH)D levels were not associated with incident MetS in whites or blacks. CONCLUSION In older adults, low 25(OH)D levels were associated with increased odds of prevalent MetS in whites but not in blacks. No association was observed between 25(OH)D levels and incident MetS in either whites or blacks.
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Affiliation(s)
- Subhashish Agarwal
- Department of Cardiology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Janet A. Tooze
- Division of Public Health Sciences and Sticht Center on Aging, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Douglas C. Bauer
- General Internal Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Jane A. Cauley
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Tamara B. Harris
- Laboratory of Epidemiology, Demography, and Biometry, National Institute on Aging, Bethesda, MD, USA
| | - Annemarie Koster
- Department of Social Medicine, University of Maastricht, Maastricht, Netherlands
| | - Catherine R. Womack
- Department of Preventive Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | | | - Denise K. Houston
- For the Health ABC Study, Sticht Center on Aging, Wake Forest School of Medicine, Winston-Salem, NC, USA
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Evaluation of the Effect of Vitamin D Supplementation on Anthropometric Indicators and Dietary Intake of Patients with Type 2 Diabetes. Rep Biochem Mol Biol 2021; 9:490-497. [PMID: 33969143 DOI: 10.52547/rbmb.9.4.490] [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] [Indexed: 11/18/2022]
Abstract
Background Various studies have shown that diabetes and its complications are associated with vitamin D deficiency. Due to the possible role of vitamin D in reducing the complications of diabetes and the high prevalence of its deficiency in Iran, this study was designed to investigate the effect of vitamin D supplementation on anthropometric indices and dietary intake of patients with type 2 diabetes. Methods This randomized clinical trial (RCT) study was performed on 74 patients with type 2 diabetes (T2DM). Patients randomly divided into two groups to receive vitamin D (VD) supplementation (100 μg or 4000 IU/day) or placebo for three months, randomization was based on the permutated-block method. Anthropometric indices including body weight (BW), body mass index (BMI) and waist circumference (WC) and physical activity, dietary intake were assessed by validated methods at the beginning and end of the trial. Results VD supplementation had not any significant differences in anthropometric indices, dietary intake and physical activity between the two groups. Conclusion Finally, it can be concluded, receiving 100 micrograms/day of VD for three months had no favourable effects on patients with T2DM.
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Chatelaine H, Dey P, Mo X, Mah E, Bruno RS, Kopec RE. Vitamin A and D Absorption in Adults with Metabolic Syndrome versus Healthy Controls: A Pilot Study Utilizing Targeted and Untargeted LC-MS Lipidomics. Mol Nutr Food Res 2021; 65:e2000413. [PMID: 33167078 PMCID: PMC7902427 DOI: 10.1002/mnfr.202000413] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
SCOPE Persons with metabolic syndrome (MetS) absorb less vitamin E than healthy controls. It is hypothesized that absorption of fat-soluble vitamins (FSV) A and D2 would also decrease with MetS status and that trends would be reflected in lipidomic responses between groups. METHODS AND RESULTS Following soymilk consumption (501 IU vitamin A, 119 IU vitamin D2 ), the triglyceride-rich lipoprotein fractions (TRL) from MetS and healthy subjects (n = 10 age- and gender-matched subjects/group) are assessed using LC-MS/MS. Absorption is calculated using area under the time-concentration curves (AUC) from samples collected at 0, 3, and 6 h post-ingestion. MetS subjects have ≈6.4-fold higher median vitamin A AUC (retinyl palmitate) versus healthy controls (P = 0.07). Vitamin D2 AUC is unaffected by MetS status (P = 0.48). Untargeted LC-MS lipidomics reveals six phospholipids and one cholesterol ester with concentrations correlating (r = 0.53-0.68; P < 0.001) with vitamin A concentration. CONCLUSIONS The vitamin A-phospholipid association suggests increased hydrolysis by PLB, PLRP2, and/or PLA2 IB may be involved in the trend in higher vitamin A bioavailability in MetS subjects. Previously observed differences in circulating levels of these vitamins are likely not due to absorption. Alternate strategies should be investigated to improve FSV status in MetS.
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Affiliation(s)
- Haley Chatelaine
- Human Nutrition Program, The Ohio State University, Columbus, OH
| | - Priyankar Dey
- Human Nutrition Program, The Ohio State University, Columbus, OH
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, Punjab, India
| | - Xiaokui Mo
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH
| | - Eunice Mah
- Biofortis, Merieux NutriSciences, Addison, IL
| | - Richard S. Bruno
- Human Nutrition Program, The Ohio State University, Columbus, OH
| | - Rachel E. Kopec
- Human Nutrition Program, The Ohio State University, Columbus, OH
- Foods for Health Discovery Theme, The Ohio State University, Columbus, OH
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Lee K, Kim J. Serum vitamin D status and metabolic syndrome: a systematic review and dose-response meta-analysis. Nutr Res Pract 2020; 15:329-345. [PMID: 34093974 PMCID: PMC8155226 DOI: 10.4162/nrp.2021.15.3.329] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/19/2020] [Accepted: 11/03/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUD/OBJECTIVES Evidence has suggested an association between serum vitamin D and metabolic syndrome (MetS), but prospective studies are very limited. The objective was to assess the dose-response association between serum vitamin D concentration and MetS risk using a systematic review and meta-analysis of updated observational studies. MATERIALS/METHODS Using MEDLINE, PubMed, and Embase, a systematic literature search was conducted through February 2020 and the references of relevant articles were reviewed. A random-effects model was used to estimate the summary odds ratio/relative risk and 95% confidence interval (CI). Heterogeneity among studies was evaluated with I2 statistic. In total, 23 observational studies (19 cross-sectional studies, and four cohort studies) were included in the meta-analysis. RESULTS The pooled estimates (95% CI) for MetS per 25-nmol/L increment in serum vitamin D concentration were 0.80 (95% CI, 0.76–0.84; I2 = 53.5) in cross-sectional studies, and 0.85 (95% CI, 0.72–0.98; I2 = 85.8) in cohort studies. Similar results were observed, irrespectively of age of study population, study location, MetS criteria, and adjustment factors. There was no publication bias for the dose-response meta-analysis of serum vitamin D concentrations and MetS. CONCLUSIONS Dose-response meta-analysis demonstrated that a 25-nmol/L increment in the serum vitamin D concentration was associated with 20% and 15% lower risks of MetS in cross-sectional studies and cohort studies, respectively.
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Affiliation(s)
- Kyueun Lee
- Department of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 17104, Korea
| | - Jihye Kim
- Department of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 17104, Korea
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Kaisar HH, Halima ASA. Association of vitamin D supplementation with serum leptin and metabolic parameters in Egyptian patients with non-alcoholic steatohepatitis: a prospective study. EGYPTIAN LIVER JOURNAL 2020. [DOI: 10.1186/s43066-020-00049-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Nonalcoholic steatohepatitis (NASH) is the progressive form of NAFLD, a common cause of liver disease, with increased chance of progression to liver fibrosis, cirrhosis, and hepatocellular carcinoma. Circulating leptin is increased in patients with NASH. It is an independent positive predictor of the severity of hepatic steatosis. Vitamin D is a lipophilic molecule essential to maintain calcium and phosphate balance. Moreover, it has antifibrotic, antiproliferative, and anti-inflammatory effects on the liver. Vitamin D deficiency is a worldwide condition and very common in patients with NASH. Low serum vitamin D has been shown to predispose to intrahepatic lipid accumulation leading to NAFLD. The aim of this study was to investigate the association of vitamin D supplementation with serum leptin and metabolic parameters in Egyptian patients with non-alcoholic steatohepatitis
Results
Patients with NASH group had statistically significant higher values of diastolic blood pressure (94.3 ± 11.9 mmHg, p < 0.0001), glycated hemoglobin (8.0 ± 2.4%, p < 0.0001), fasting blood sugar (165.6 ± 62.0 mg/dL, p < 0.0001), fasting insulin level (24.2 ± 3.0 μU/ml, p < 0.0001), homeostatic model assessment of insulin resistance (HOMA-IR) (1.8 ± 0.7, p < 0.0001), alanine transferase (ALT) (78.2 ± 36.7 U/L, p < 0.0001), aspartate transferase (AST) (108.6 ± 85.6 U/L, p < 0.0001), NAFLD fibrosis score (− 0.78 ± 0.9, p < 0.0001), total cholesterol (233.0 ± 40.9 mg/dL, p = 0.0011), low-density lipoprotein (117.5 ± 41.6 mg/dL, p = 0.0084), and triglycerides (229.7 ± 62.1 mg/dL, p < 0.0001) than the control group. Moreover, they had lower serum vitamin D level (15.6 ± 6.6 ng/ml, p = 0.0004) and higher serum leptin level (35.9 ± 28.4 ng/ml, p < 0.0001) than the control group. Following vitamin D supplementation, there was a statistically significant reduction in HbA1c (6.8 ± 1.3%, p = 0.0055), fasting blood sugar (136.1 ± 32.7 mg/dL, p = 0.0094), fasting insulin level (22.9 ± 1.8 μU/ml, p = 0.0236), HOMA-IR (1.4 ± 0.4, p = 0.0026), ALT (55.3 ± 21.3 U/L, p = 0.0010), AST (73.1 ± 54.2 U/L, p = 0.0297), and triglycerides (203.6 ± 49.8 mg/dL, p = 0.0415) in patients with NASH. There was a statistically significant increase in serum vitamin D level (33.0 ± 7.6 ng/ml, p < 0.0001) and decrease in serum leptin level (23.5 ± 12.9 ng/ml, p = 0.0140) after treatment.
Conclusions
Vitamin D supplementation in patients with NASH in a dose of 4000 IU/day for 12 weeks improves severity of hepatic inflammation, decreases insulin resistance, improves glycemic control, corrects dyslipidemia, and protects against lipotoxicity by inhibition of serum leptin.
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Bener A, Al-Hamaq AOAA, Zughaier SM, Öztürk M, Ömer A. Assessment of the Role of Serum 25-Hydroxy Vitamin D Level on Coronary Heart Disease Risk With Stratification Among Patients With Type 2 Diabetes Mellitus. Angiology 2020; 72:86-92. [PMID: 32840113 DOI: 10.1177/0003319720951411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We investigated the role of vitamin D on glycemic regulation and cardiac complications in patients with type 2 diabetes mellitus (T2DM). A total of 1139 patients (49.3% males vs 50.7% females) were included. Information on sociodemographic lifestyle, family history, blood pressure (BP), and coronary heart disease (CHD) complications was collected. Significant differences were found between males and females regarding age-groups (P = .002), body mass index (BMI; P = .008), physical activity (P = .010), sheesha smoking (P = .016), cigarette smoking (P = .002), hypertension (P = .050), metabolic syndrome (P = .026), and CHD (P = .020). There were significant differences between vitamin D deficiency, insufficiency, and sufficiency in relation to age-group (P = .002), income (P = .002), waist circumference (P = .002), hip circumference (P = .028), waist-hip ratio (P = .002), and BMI (P = .002). Further, mean values of hemoglobin, magnesium, creatinine, hemoglobin A1c (HbA1c), total cholesterol, uric acid, and diastolic BP were significantly higher among patients with vitamin D deficiency compared with those with insufficiency and sufficiency. Multiple logistic regression analysis revealed that 25-hydroxy vitamin D, 25(OH)D, HbA1c, waist circumference, uric acid, duration of T2DM, total cholesterol, systolic and diastolic BP, and BMI were strong predictor risk factors for CHD among patients with T2DM. The present study supports that 25(OH)D may have a direct effect on CHD and on its risk factors.
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Affiliation(s)
- Abdülbari Bener
- Department of Biostatistics and Medical Informatics, Cerrahpaşa Faculty of Medicine, 532719Istanbul University, Istanbul, Turkey.,Department of Evidence for Population Health Unit, School of Epidemiology and Health Sciences, The University of Manchester, United Kingdom.,Department of Endocrinology, International School of Medicine, 532719Istanbul Medipol University, Regenerative and Medicine Research Centre, Istanbul, Turkey
| | | | - Susu M Zughaier
- Department of Basic Medical Sciences, College of Medicine, QU Health, 61780Qatar University, Doha, Qatar
| | - Mustafa Öztürk
- Department of Endocrinology, International School of Medicine, 532719Istanbul Medipol University, Regenerative and Medicine Research Centre, Istanbul, Turkey
| | - Abdülkadir Ömer
- Department of Endocrinology, International School of Medicine, 532719Istanbul Medipol University, Regenerative and Medicine Research Centre, Istanbul, Turkey
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da Silva Teixeira S, Harrison K, Uzodike M, Rajapakshe K, Coarfa C, He Y, Xu Y, Sisley S. Vitamin D actions in neurons require the PI3K pathway for both enhancing insulin signaling and rapid depolarizing effects. J Steroid Biochem Mol Biol 2020; 200:105690. [PMID: 32408067 PMCID: PMC7397709 DOI: 10.1016/j.jsbmb.2020.105690] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 03/23/2020] [Accepted: 04/29/2020] [Indexed: 12/15/2022]
Abstract
Despite correlations between low vitamin D levels and diabetes incidence/severity, supplementation with vitamin D has not been widely effective in improving glucose parameters. This may be due to a lack of knowledge regarding how low vitamin D levels physiologically affect glucose homeostasis. We have previously shown that the brain may be a critical area for vitamin d-mediated action on peripheral glucose levels. However, the mechanisms for how vitamin D acts in the brain are unknown. We utilized a multimodal approach to determine the mechanisms by which vitamin D may act in the brain. We first performed an unbiased search (RNA-sequencing) for pathways affected by vitamin D. Vitamin D (125-dihydroxyvitamin D3; 1,25D3) delivered directly into the third ventricle of obese animals differentially regulated multiple pathways, including the insulin signaling pathway. The insulin signaling pathway includes PI3K, which is important in the brain for glucose regulation. Since others have shown that vitamin D acts through the PI3K pathway in non-neuronal cells (muscle and bone), we hypothesized that vitamin D may act in neurons through a PI3K-dependent pathway. In a hypothalamic cell-culture model (GT1-7 cells), we demonstrate that 1,25D3 increased phosphorylation of Akt in the presence of insulin. However, this was blocked with pre-treatment of wortmannin, a PI3K inhibitor. 1,25D3 increased gene transcription of several genes within the PI3K pathway, including Irs2 and p85, without affecting expression of InsR or Akt. Since we had previously shown that 1,25D3 has significant effects on neuronal function, we also tested if the PI3K pathway could mediate rapid actions of vitamin D. We found that 1,25D3 increased the firing frequency of neurons through a PI3K-dependent mechanism. Collectively, these data support that vitamin D enhances insulin signaling and neuronal excitability through PI3K dependent processes which involve both transcriptional and membrane-initiated signaling events.
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Affiliation(s)
- Silvania da Silva Teixeira
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, 77030, United States
| | - Keisha Harrison
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, 77030, United States
| | | | - Kimal Rajapakshe
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, United States; Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, 77030, United States
| | - Cristian Coarfa
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, United States; Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, 77030, United States; Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, United States
| | - Yanlin He
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, 77030, United States
| | - Yong Xu
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, 77030, United States
| | - Stephanie Sisley
- Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, 77030, United States.
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Lee I, Park E, Cho J. Association of nonalcoholic fatty liver disease with serum vitamin D levels in combination of physical fitness in korean older adults. J Steroid Biochem Mol Biol 2020; 198:105569. [PMID: 31891747 DOI: 10.1016/j.jsbmb.2019.105569] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 12/09/2019] [Accepted: 12/23/2019] [Indexed: 02/06/2023]
Abstract
The prevalence of non-alcoholic fatty liver disease (NAFLD) tends to increase with age, but little is known regarding relations between the risk of NAFLD in older adults and serum vitamin D (25-hydroxyvitamin D) and physical fitness levels. The aim of this study was to investigate the relationship between NAFLD risk and serum vitamin D levels combined with physical fitness in elderly adults using a non-invasive diagnostic approach. We enrolled 533 Korean older adults (80.8 % women), aged 65 years or older in this cross-sectional study. NAFLD in absence of another cause of liver disease was defined according to the ZJU and NAFLD liver fat (LFS) score. Physical fitness was assessed using a senior fitness test protocol. Logistic regression analysis was used to estimate odds ratios (ORs) and 95 % confidence intervals (CIs) of NAFLD for different combinations of serum vitamin D and physical fitness levels. According to the ZJU (OR: 3.073, CI: 1.285-7.350, p = 0.012) and LFS (OR = 2.443, CI = 1.071-5.572, p = 0.034), individuals with serum vitamin D < 30 ng/ml and poor physical fitness had a significantly higher risk of NAFLD than individuals with serum vitamin D ≥ 30 ng/ml and high fitness (reference, OR = 1), even after adjustments for age, sex, smoking, alcohol consumption and physical inactivity. However, there was no significant association after adjustment for additional metabolic diseases. Our findings suggest that the maintenance of appropriate levels of serum vitamin D and/or high physical fitness and the monitoring metabolic diseases can help reduce the risk of NAFLD in older adults.
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Affiliation(s)
- Inhwan Lee
- College of Sport Science, Sungkyunkwan University, Suwon, Republic of Korea
| | - Eunmi Park
- Diabetes Obesity and Metabolism Institute, Icahn School of Medicine at Mount Sinai, NY, USA; Department of Food and Nutrition, Hannam University, Daejeon, 306-791, Republic of Korea.
| | - Jinkyung Cho
- College of Sport Science, Sungkyunkwan University, Suwon, Republic of Korea; Diabetes Obesity and Metabolism Institute, Icahn School of Medicine at Mount Sinai, NY, USA.
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Xiao P, Dong H, Li H, Yan Y, Cheng H, Liu J, Zhao X, Hou D, Mi J. Adequate 25-hydroxyvitamin D levels are inversely associated with various cardiometabolic risk factors in Chinese children, especially obese children. BMJ Open Diabetes Res Care 2020; 8:e000846. [PMID: 32071197 PMCID: PMC7039595 DOI: 10.1136/bmjdrc-2019-000846] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 01/07/2020] [Accepted: 01/14/2020] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVE Vitamin D deficiency has recently evolved as a major public health issue worldwide. But the relationship between vitamin D and cardiovascular health in children remains unclear. Accordingly, we aimed to examine the associations between 25-hydroxyvitamin D (25(OH)D) concentrations and cardiometabolic risk factors, and to assess the possible effect modification of obesity on the associations in a Chinese pediatric population. RESEARCH DESIGN AND METHODS A cross-sectional sample of 6091 children aged 6-18 years was obtained using a cluster sampling method. The 25(OH)D concentrations, and metabolic risk factors, including waist to height ratio, blood pressure, blood lipids, fasting blood glucose (FBG), and insulin were measured. Adjusted ORs and multiplicative or additive interaction were calculated to assess the associations and effect modification, respectively. RESULTS Triglycerides, FBG, insulin, and homeostasis model assessment of insulin resistance were inversely associated with 25(OH)D concentrations (p<0.05) in both sexes. The OR of hyperglycemia among individuals with insufficient vitamin D was higher than those with adequate vitamin D after adjusting for covariates (OR: 1.47; 95% CI 1.26 to 1.70). Moreover, girls with insufficient vitamin D had significantly higher odds for hypertension and high total cholesterol than those with adequate vitamin D, which was not observed in boys. Thirty-two percent (95% CI 14% to 51%) of the increased odds of hyperglycemia can be explained by the interaction between insufficient vitamin D and obesity. CONCLUSIONS Vitamin D insufficiency is associated with increased odds of various cardiometabolic risk factors in Chinese children and has a synergistic effect on hyperglycemia with obesity.
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Affiliation(s)
- Pei Xiao
- Department of Epidemiology, Capital Institute of Pediatrics, Beijing, China
| | - Hongbo Dong
- Department of Non-communicable Disease Management, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Haibo Li
- Department of Epidemiology, Capital Institute of Pediatrics, Beijing, China
| | - Yinkun Yan
- Department of Non-communicable Disease Management, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Hong Cheng
- Department of Epidemiology, Capital Institute of Pediatrics, Beijing, China
| | - Junting Liu
- Department of Epidemiology, Capital Institute of Pediatrics, Beijing, China
| | - Xiaoyuan Zhao
- Department of Epidemiology, Capital Institute of Pediatrics, Beijing, China
| | - Dongqing Hou
- Department of Epidemiology, Capital Institute of Pediatrics, Beijing, China
| | - Jie Mi
- Department of Non-communicable Disease Management, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
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Diabetes Prevention: Vitamin D Supplementation May Not Provide Any Protection If There Is No Evidence of Deficiency! Nutrients 2019; 11:nu11112651. [PMID: 31689953 PMCID: PMC6893410 DOI: 10.3390/nu11112651] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/17/2019] [Accepted: 10/29/2019] [Indexed: 12/18/2022] Open
Abstract
The results of epidemiological and several interventional studies suggest an association between vitamin D deficiency and an increased risk of developing insulin resistance or type 2 diabetes. Various studies have indicated that a lack of vitamin D must be regarded as a pathogenic factor for type 2 diabetes and the metabolic syndrome, since a vitamin D deficiency (25(OH)D < 20 ng/mL) increases insulin resistance and reduces insulin secretion from beta cells in the pancreas. A recent study by Pittas et al. did not show a clear preventive effect of vitamin D supplementation with respect to the risk of developing type 2 diabetes. In terms of this study, it must be remembered that more than 70% of the participants in both the vitamin D supplement group and the placebo group did not have a vitamin D deficiency. In medical and pharmaceutical practice, more attention should be paid to vitamin D deficiency than has previously been accorded. Vitamin D status can be assessed objectively when necessary by laboratory testing of the serum 25(OH)D levels. Type 2 diabetes patients benefit from improving their vitamin D status with respect to their glucose metabolism and decreased mortality risk. Patients with insulin resistance who are vitamin D deficient should be treated with an appropriate amount of vitamin D to achieve circulating levels of 25(OH)D of 40–60 ng/mL.
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Carrivick S, Alfonso H, Golledge J, Clancy P, Flicker L, Gunton JE, Hankey GJ, Almeida OP, Norman PE, Yeap BB. Differential associations of ferritin and 25-hydroxyvitamin D with fasting glucose and diabetes risk in community dwelling older men. Diabetes Metab Res Rev 2019; 35:e3172. [PMID: 30997951 DOI: 10.1002/dmrr.3172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 03/23/2019] [Accepted: 04/07/2019] [Indexed: 12/29/2022]
Abstract
AIMS We examined associations of ferritin and 25-hydroxyvitamin D with fasting glucose and prevalent diabetes in older men. METHODS Cross-sectional analysis of 4153 community-dwelling men aged 70 to 89 years in Western Australia. Plasma ferritin, 25-hydroxyvitamin D, and glucose were assayed. Diabetes was ascertained from self-report, medications, and fasting glucose. RESULTS There were 577 men with diabetes (13.9%). In the whole cohort, ferritin was associated with fasting glucose (0.051 mmol/L per 1 SD increase in ferritin, P = .006) and 25-hydroxyvitamin D was inversely associated (-0.085 mmol/L per 1 SD, P < .001). Ferritin was not associated with prevalent diabetes (highest vs. lowest quartile; >225 vs <66 μg/L: adjusted odds ratio [OR] 0.97, 95% confidence interval [CI], 0.74-1.27, P = .83). Higher vitamin D was associated with decreased odds of prevalent diabetes (highest vs lowest quartile; >82 nmol/L vs <53 nmol/L: OR = 0.57, 95% CI = 0.43-0.75, P < .001). There was no interaction between ferritin and vitamin D on diabetes risk. CONCLUSIONS In older men, ferritin is associated with fasting glucose but not prevalent diabetes. Higher 25-hydroxyvitamin D concentrations are independently associated with lower fasting glucose and reduced risk of diabetes. Clinical trials are required to determine whether interventions, which raise vitamin D concentrations, would reduce incidence of diabetes in this expanding demographic group.
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Affiliation(s)
- Simon Carrivick
- Medical School, University of Western Australia, Perth, Australia
- Department of Endocrinology and Diabetes, Fiona Stanley Hospital, Perth, Australia
| | - Helman Alfonso
- School of Public Health, Curtin University, Perth, Australia
| | - Jonathan Golledge
- Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine, James Cook University, Townsville, Australia
- Department of Vascular and Endovascular Surgery, Townsville Hospital, Townsville, Australia
| | - Paula Clancy
- Health Practitioners And Researchers Together-Blood Endothelium And Tissue (HART-BEAT), Townsville Hospital, Townsville, Australia
| | - Leon Flicker
- Medical School, University of Western Australia, Perth, Australia
- Western Australian Centre for Health and Ageing, Centre for Medical Research, University of Western Australia, Perth, Australia
| | - Jenny E Gunton
- Westmead Hospital, The University of Sydney, Sydney, Australia
| | - Graeme J Hankey
- Medical School, University of Western Australia, Perth, Australia
| | - Osvaldo P Almeida
- Medical School, University of Western Australia, Perth, Australia
- Western Australian Centre for Health and Ageing, Centre for Medical Research, University of Western Australia, Perth, Australia
| | - Paul E Norman
- Medical School, University of Western Australia, Perth, Australia
| | - Bu B Yeap
- Medical School, University of Western Australia, Perth, Australia
- Department of Endocrinology and Diabetes, Fiona Stanley Hospital, Perth, Australia
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Napoli N, Conte C, Pedone C, Strotmeyer ES, Barbour KE, Black DM, Samelson EJ, Schwartz AV. Effect of Insulin Resistance on BMD and Fracture Risk in Older Adults. J Clin Endocrinol Metab 2019; 104:3303-3310. [PMID: 30802282 PMCID: PMC6584125 DOI: 10.1210/jc.2018-02539] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 02/20/2019] [Indexed: 02/06/2023]
Abstract
CONTEXT Adults with type 2 diabetes (T2D) have higher fracture risk compared with nondiabetics, despite having higher bone mineral density (BMD). Insulin resistance (IR) has been associated with increased BMD. It is not known if IR increases fracture risk. OBJECTIVE We investigated the relationship among IR HOMA-IR, BMD, and incident nonspine fractures in nondiabetic individuals. DESIGN Participants included 2398 community-dwelling, nondiabetic older adults (age 74 ± 3 years, 53% women, 38% black) in the Health, Aging and Body Composition Prospective Cohort Study [median follow-up: 12 (interquartile range: 6) years]. RESULTS The cut-off values for the HOMA-IR quartiles were 1.05, 1.54, and 2.33. Total hip BMD was 0.104 g/cm2 higher in the fourth vs the first HOMA-IR quartile (P < 0.001). This difference was attenuated after adjustment for BMI (adjusted mean difference 0.007 g/cm2; P = 0.371). In unadjusted models, fracture risk was lower in those with higher HOMA-IR [hazard ratio (HR) 0.86 (95% CI 0.73 to 1.01) and 0.65 (95% CI 0.47 to 0.89) for the third and fourth quartile, respectively, vs the first quartile]. However, after adjustment for BMD and BMI, fracture risk was significantly higher in the third quartile (HR 1.19, 95% CI 1.00 to 1.41) and tended to be increased in the fourth quartile (HR 1.12, 95% CI 0.87 to 1.46) vs the first quartile. CONCLUSIONS Greater IR is associated with higher BMD in nondiabetic older adults. In contrast to the relationship between T2D and fracture risk, we did not find consistent evidence that greater IR is associated with increased fracture risk after adjustment for BMI and BMD.
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Affiliation(s)
- Nicola Napoli
- Division of Endocrinology and Diabetes, University Campus Bio-Medico di Roma, Rome, Italy
- Division of Bone Mineral Diseases, Washington University in Saint Louis, Saint Louis, Missouri
| | - Caterina Conte
- Vita-Salute San Raffaele University, Milan, Italy
- Clinical Transplant Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Claudio Pedone
- Geriatric Unit, University Campus Bio-Medico di Roma, Rome, Italy
| | - Elsa S Strotmeyer
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Kamil E Barbour
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Dennis M Black
- Department of Medicine, University of California, San Francisco, San Francisco, California
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
| | - Elizabeth J Samelson
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts
- Department of Medicine, Harvard Medical School, Boston, Massachusetts
- Division of Gerontology, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Ann V Schwartz
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
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Chen LW, Chien CH, Kuo SF, Yu CY, Lin CL, Chien RN. Low vitamin D level was associated with metabolic syndrome and high leptin level in subjects with nonalcoholic fatty liver disease: a community-based study. BMC Gastroenterol 2019; 19:126. [PMID: 31311491 PMCID: PMC6636103 DOI: 10.1186/s12876-019-1040-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/30/2019] [Indexed: 02/06/2023] Open
Abstract
Background This study aimed to evaluate the association between serum vitamin D levels and nonalcoholic fatty liver disease (NAFLD) parameters, such as metabolic syndrome (MS), inflammatory cytokines (tumor necrosis factor, high sensitive C-reactive protein) and adipokines (adiponectin, leptin). Methods From August 2013 to August 2016, a community-based study was performed in the north-eastern region of Taiwan. All subjects received a demographic survey, blood testing and abdominal ultrasonography (US). The vitamin D level was evaluated by quartile divide or used the classification of deficiency (< 20 ng/ml), insufficiency (20–30 ng/ml) and sufficiency (> 30 ng/ml). Results Subjects were divided into NAFLD group and normal control (subjects number = 564 in each group) following abdominal US study and matching age and gender. The mean age was 57.1 years in NAFLD group and 57.5 in control group. Subjects in NAFLD group had a lower mean vitamin D than those in the control group (28.5 ± 9.5 ng/ml vs. 29.9 ± 10.2 ng/ml, P = 0.018). Subjects with serum vitamin D deficiency or insufficiency had higher odds for MS than those with sufficient vitamin D levels [deficiency vs. sufficiency, adjusted odds ratio (aOR) =1.860 (95% CI = 1.234–2.804), P = 0.003; insufficiency vs. sufficiency, aOR = 1.669 (95% CI = 1.237–2.251), P = 0.001]. Similarly, subjects in the lowest quartile of vitamin D had higher odds for MS than those in the highest quartile of vitamin D (aOR = 2.792, 95% CI = 1.719–4.538, P < 0.001). Vitamin D level was positively correlated with age and male, but negatively correlated with serum leptin level. Conclusion Subjects with low vitamin D level had higher odds for MS, but higher levels of leptin, compared to those with high vitamin D levels.
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Affiliation(s)
- Li-Wei Chen
- Department of Gastroenterology and Hepatology, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401.,Community Medicine Research Center, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401
| | - Cheng-Hung Chien
- Department of Gastroenterology and Hepatology, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401.,Community Medicine Research Center, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401
| | - Sheng-Fong Kuo
- Community Medicine Research Center, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401.,Metabolism and Endocrinology, Chang-Gung Memorial Hospital and University at Keelung, Keelung, Taiwan
| | - Chia-Ying Yu
- Department of Gastroenterology and Hepatology, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401.,Community Medicine Research Center, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401
| | - Chih-Lang Lin
- Department of Gastroenterology and Hepatology, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401.,Community Medicine Research Center, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401
| | - Rong-Nan Chien
- Department of Gastroenterology and Hepatology, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401. .,Community Medicine Research Center, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401.
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47
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Serum 25-hydroxyvitamin D is associated with obesity and metabolic parameters in US children. Public Health Nutr 2019; 23:1223-1225. [PMID: 31288870 DOI: 10.1017/s1368980019001770] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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48
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Kodentsova VM, Risnik DV, Sharafetdinov KK, Nikityuk DB. Vitamins in diet of patients with metabolic syndrome. TERAPEVT ARKH 2019; 91:118-125. [PMID: 31094182 DOI: 10.26442/00403660.2019.02.000097] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Aim - analysis of data on the role of vitamin and carotenoid deficiency in the development of metabolic syndrome (MS), the consumption of individual vitamins and vitamin supplements, as well as estimation of the effectiveness of the use of vitamins in patients with MS. A review of the existing literature has been carried out in the databases of RINC, CyberLeninka, Google Scholar, Pubmed. The lack of vitamins is a risk factor for MS and its components. The diet of people with MS is characterized by excessive caloric content and at the same time contains an inadequate amount of most vitamins. The most frequent in patients with MS is the deficiency (blood level) of vitamin D, E, B vitamins, carotenoids. Among patients with MS, individuals with a reduced concentration of vitamins in the blood plasma are often found. In turn, among those with a deficiency of vitamins, MS is more often found. Low concentrations of 25(OH)D in the serum are associated with an increased risk of MS. An inverse association between the concentration of the hormonal form of vitamin 1.25(OH)2D3 in the serum and the development of MC has been found. In patients with MS, the α-tocopherol concentration associated with lipids is lower than in healthy individuals, and γ-tocopherol, on the contrary, is higher. Taking high doses of one of the vitamin E homologues shifts the balance between tocopherols in the blood plasma. Sufficient supply of the body with all vitamins involved in the formation of metabolically active forms of vitamins (D, B6, PP) is a necessary condition for the exercise of these biological functions by these vitamins. The lack of vitamins is a risk factor for MS and its components. Enrichment of the diet of patients with MS should be considered as a necessary favorable background for its treatment. Since the body has functional connections between vitamins, it is advisable to use not individual vitamins, but their complexes.
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Affiliation(s)
- V M Kodentsova
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, Moscow, Russia
| | - D V Risnik
- M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Kh Kh Sharafetdinov
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, Moscow, Russia.,Russian Medical Academy of Continuing Professional Education of the Ministry of Health of the Russian Federation, Moscow, Russia.,I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow, Russia
| | - D B Nikityuk
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, Moscow, Russia.,M.V. Lomonosov Moscow State University, Moscow, Russia
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Sangouni AA, Ghavamzadeh S, Jamalzehi A. A narrative review on effects of vitamin D on main risk factors and severity of Non-Alcoholic Fatty Liver Disease. Diabetes Metab Syndr 2019; 13:2260-2265. [PMID: 31235166 DOI: 10.1016/j.dsx.2019.05.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 05/21/2019] [Indexed: 02/06/2023]
Abstract
The global prevalence of Non-alcoholic fatty liver disease (NAFLD) is increasing rapidly. Many studies have been conducted on the treatment of NAFLD; nevertheless, there is still no approved drug treatment for this disease. Although the pathogenesis of NAFLD is not fully understood, but inflammation, insulin resistance, oxidative stress, obesity and dyslipidemia are among the main causes. Epidemiological studies have shown that hypovitaminosis D is associated with these factors causing NAFLD. In addition, rate of Vitamin D deficiency has been shown to be directly related to the severity of NAFLD. Accordingly, it is believed that vitamin D may help to treatment of NAFLD by improving the above-mentioned risk factors. The purpose of this review is to survey the recent advances in the field of Vitamin D efficacy on risk factors and the severity of NAFLD based on existing evidence, especially the clinical efficiency of vitamin D supplementation in patients with NAFLD.
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Affiliation(s)
- Abbas Ali Sangouni
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran; Department of Human Nutrition, Medicine Faculty, Urmia University of Medical Sciences, Urmia, Iran
| | - Saeid Ghavamzadeh
- Department of Human Nutrition, Medicine Faculty, Urmia University of Medical Sciences, Urmia, Iran; Food and Beverage Safety Research Center, Urmia University of Medical Sciences, Urmia, Iran.
| | - Atena Jamalzehi
- Department of Nutrition, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
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50
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Guénard F, Jacques H, Gagnon C, Marette A, Vohl MC. Acute Effects of Single Doses of Bonito Fish Peptides and Vitamin D on Whole Blood Gene Expression Levels: A Randomized Controlled Trial. Int J Mol Sci 2019; 20:ijms20081944. [PMID: 31010033 PMCID: PMC6514567 DOI: 10.3390/ijms20081944] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/18/2019] [Accepted: 04/19/2019] [Indexed: 12/18/2022] Open
Abstract
Fish contains high quality proteins and essential nutrients including 25-hydroxyvitamin D (25(OH)D). Fish peptide consumption can lower cardiovascular disease (CVD) risk factors, and studies have shown an association between 25(OH)D deficiency, CVD and CVD risk factors, such as diabetes. This study investigated acute effects of a single dose of cholecalciferol (VitD3), bonito fish peptide hydrolysate (BPH), or a combination of both on CVD risk factors and whole blood gene expression levels. A randomized, crossover, placebo controlled trial was conducted in 22 adults. They ingested, in random order and at 7-day intervals, 1000 IU of VitD3, 3 g of BPH, a combination of both, or a placebo. A 180 min oral glucose tolerance test was performed. Differences in whole-genome expression levels after versus before each supplementation were computed for 18 subjects. We observed that 16, 1 and 5 transcripts were differentially expressed post- vs. pre-ingestion for VitD3, BPH or VitD3 + BPH treatments, respectively. VitD3-containing treatments affected the expression of the solute carrier family 25 member 20 (SLC25A20) gene involved in fatty acid oxidation, various transcription factors and genes related to glucose metabolism. These results suggest that VitD3 rapidly modulates genes related to CVD risk factors in blood while BPH seems to moderately modulate gene expression levels.
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Affiliation(s)
- Frédéric Guénard
- School of Nutrition, Laval University, 2440 Hochelaga Blvd, Quebec, QC G1V 0A6, Canada.
- Institute of Nutrition and Functional Food (INAF), Laval University, 2440 Hochelaga Blvd, Quebec, QC G1V 0A6, Canada.
| | - Hélène Jacques
- School of Nutrition, Laval University, 2440 Hochelaga Blvd, Quebec, QC G1V 0A6, Canada.
- Institute of Nutrition and Functional Food (INAF), Laval University, 2440 Hochelaga Blvd, Quebec, QC G1V 0A6, Canada.
| | - Claudia Gagnon
- Institute of Nutrition and Functional Food (INAF), Laval University, 2440 Hochelaga Blvd, Quebec, QC G1V 0A6, Canada.
- Endocrinology and Nephrology Unit, CHU de Quebec Research Center, 2705 Laurier Blvd, Quebec, QC G1V 4G2, Canada.
- Department of Medicine, Laval University, 1050 avenue de la Médecine, Quebec, QC G1V 0A6, Canada.
| | - André Marette
- Institute of Nutrition and Functional Food (INAF), Laval University, 2440 Hochelaga Blvd, Quebec, QC G1V 0A6, Canada.
- Quebec Heart and Lung Institute (IUCPQ) Research Center, 2725 chemin Sainte-Foy, Quebec, QC G1V 4G5, Canada.
| | - Marie-Claude Vohl
- School of Nutrition, Laval University, 2440 Hochelaga Blvd, Quebec, QC G1V 0A6, Canada.
- Institute of Nutrition and Functional Food (INAF), Laval University, 2440 Hochelaga Blvd, Quebec, QC G1V 0A6, Canada.
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