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Mao S. Emerging role and the signaling pathways of uncoupling protein 2 in kidney diseases. Ren Fail 2024; 46:2381604. [PMID: 39090967 PMCID: PMC11299446 DOI: 10.1080/0886022x.2024.2381604] [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: 08/15/2023] [Revised: 06/18/2024] [Accepted: 07/13/2024] [Indexed: 08/04/2024] Open
Abstract
OBJECTIVES Uncoupling protein 2 (UCP2) was involved in the pathogenesis and development of kidney diseases. Many signaling pathways and factors regulate the expression of UCP2. We aimed to investigate the precise role of UCP2 and its signaling pathways in kidney diseases. METHODS We summarized the available evidence to yield a more detailed conclusion of the signal transduction pathways of UCP2 and its role in the development and progression of kidney diseases. RESULTS UCP2 could interact with 14.3.3 family proteins, mitochondrial phospholipase iPLA2γ, NMDAR, glucokinase, PPARγ2. There existed a signaling pathway between UCP2 and NMDAR, PPARγ. UCP2 can inhibit the ROS production, inflammatory response, and apoptosis, which may protect against renal injury, particularly AKI. Meanwhile UCP2 can decrease ATP production and inhibit the secretion of insulin, which may alleviate chronic renal damages, such as diabetic nephropathy and kidney fibrosis. CONCLUSIONS Homeostasis of UCP2 is helpful for kidney health. UCP2 may play different roles in different kinds of renal injury.
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Affiliation(s)
- Song Mao
- Department of Pediatrics, Shanghai Sixth People’s Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Gupta VK, Sahu L, Sonwal S, Suneetha A, Kim DH, Kim J, Verma HK, Pavitra E, Raju GSR, Bhaskar L, Lee HU, Huh YS. Advances in biomedical applications of vitamin D for VDR targeted management of obesity and cancer. Biomed Pharmacother 2024; 177:117001. [PMID: 38936194 DOI: 10.1016/j.biopha.2024.117001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 06/11/2024] [Accepted: 06/17/2024] [Indexed: 06/29/2024] Open
Abstract
BACKGROUND 1,25(OH)2D3 is a fat-soluble vitamin, involved in regulating Ca2+ homeostasis in the body. Its storage in adipose tissue depends on the fat content of the body. Obesity is the result of abnormal lipid deposition due to the prolonged positive energy balance and increases the risk of several cancer types. Furthermore, it has been associated with vitamin D deficiency and defined as a low 25(OH)2D3 blood level. In addition, 1,25(OH)2D3 plays vital roles in Ca2+-Pi and glucose metabolism in the adipocytes of obese individuals and regulates the expressions of adipogenesis-associated genes in mature adipocytes. SCOPE AND APPROACH The present contribution focused on the VDR mediated mechanisms interconnecting the obese condition and cancer proliferation due to 1,25(OH)2D3-deficiency in humans. This contribution also summarizes the identification and development of molecular targets for VDR-targeted drug discovery. KEY FINDINGS AND CONCLUSIONS Several studies have revealed that cancer development in a background of 1,25(OH)2D3 deficient obesity involves the VDR gene. Moreover, 1,25(OH)2D3 is also known to influence several cellular processes, including differentiation, proliferation, and adhesion. The multifaceted physiology of obesity has improved our understanding of the cancer therapeutic targets. However, currently available anti-cancer drugs are notorious for their side effects, which have raised safety issues. Thus, there is interest in developing 1,25(OH)2D3-based therapies without any side effects.
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Affiliation(s)
- Vivek Kumar Gupta
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea
| | - Lipina Sahu
- Department of Zoology, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh 495009, India
| | - Sonam Sonwal
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea
| | - Achanti Suneetha
- Department of Pharmaceutical Analysis, KVSR Siddhartha College of Pharmaceutical Sciences, Vijayawada, Andhra Pradesh 520010, India
| | - Dong Hyeon Kim
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea
| | - Jigyeong Kim
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea
| | - Henu Kumar Verma
- Department of Immunopathology, Institute of Lungs Health and Immunity, Comprehensive Pneumology Center, Helmholtz Zentrum, Neuherberg, Munich 85764, Germany
| | - Eluri Pavitra
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea
| | - Ganji Seeta Rama Raju
- Department of Energy and Materials Engineering, Dongguk University, Seoul 04620, Republic of Korea.
| | - Lvks Bhaskar
- Department of Zoology, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh 495009, India.
| | - Hyun Uk Lee
- Division of Material Analysis and Research, Korea Basic Science Institute, Daejeon 34133, Republic of Korea.
| | - Yun Suk Huh
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, Incheon 22212, Republic of Korea.
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Mukai T, Kusudo T. Bidirectional effect of vitamin D on brown adipogenesis of C3H10T1/2 fibroblast-like cells. PeerJ 2023; 11:e14785. [PMID: 36815991 PMCID: PMC9934812 DOI: 10.7717/peerj.14785] [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: 11/26/2021] [Accepted: 01/03/2023] [Indexed: 02/01/2023] Open
Abstract
Background Brown adipose tissue (BAT) dissipates caloric energy as heat and plays a role in glucose and lipid metabolism. Therefore, augmentation and activation of BAT are the focus of new treatment strategies against obesity, a primary risk factor of metabolic syndrome. The vitamin D system plays a crucial role in mineral homeostasis, bone metabolism, and cell proliferation and differentiation. In this study, we investigated the effects of vitamin D3 [1,25(OH)2D3] on brown adipocyte differentiation. Methods The mouse fibroblast-like cell line C3H10T1/2 was differentiated into brown adipocytes in the presence of 1,25(OH)2D3. The effect of 1,25(OH)2D3 on brown adipocyte differentiation was assessed by measuring lipid accumulation, the expression of related genes, and cytotoxicity. The viability of C3H10T1/2 cells was measured using the Cell Counting Kit-8 assay. Gene expression was investigated using quantitative reverse transcription-polymerase chain reaction. Protein expression was estimated using western blotting. Results 1,25(OH)2D3 inhibited adipocyte differentiation and exerted a cytotoxic effect at 1 nM. However, in the physiological concentration range (50-250 pM), 1,25(OH)2D3 promoted uncoupling protein 1 (UCP1) expression in C3H10T1/2 cells. This effect was not observed when 1,25(OH)2D3 was added 48 h after the initiation of differentiation, suggesting that the vitamin D system acts in the early phase of the differentiation program. We showed that 1,25(OH)2D3 increased the expression of two key regulators of brown adipogenesis, PR domain containing 16 (Prdm16) and peroxisome proliferator-activated receptor γ coactivator-1α (Pgc1α ). Furthermore, 1,25(OH)2D3 increased Ucp1 expression in 3T3-L1 beige adipogenesis in a dose-dependent manner. Conclusion These data indicate the potential of vitamin D and its analogs as therapeutics for the treatment of obesity and related metabolic diseases.
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Affiliation(s)
- Takako Mukai
- Department of Nutrition and Food Sciences, Faculty of Human Sciences, Tezukayama Gakuin University, Sakai, Osaka, Japan
| | - Tatsuya Kusudo
- Department of Nutrition and Food Sciences, Faculty of Human Sciences, Tezukayama Gakuin University, Sakai, Osaka, Japan
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Nouri M, Shateri Z, Faghih S. The relationship between intake of fruits, vegetables and dairy products with overweight and obesity in a large sample in Iran: Findings of STEPS 2016. Front Nutr 2023; 9:1082976. [PMID: 36733471 PMCID: PMC9886861 DOI: 10.3389/fnut.2022.1082976] [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: 10/28/2022] [Accepted: 12/28/2022] [Indexed: 01/18/2023] Open
Abstract
Background The present study aimed to investigate the association between fruits and vegetables (FVs) and dairy product intake with body weight based on the data from the nationwide Stepwise approach to surveillance (STEPS) survey in Iran. Methods STEPS is a national-based cross-sectional study conducted on 3,0541 people selected by stratified cluster random sampling in Iran from April to November 2016. The outcome of the current study was body mass index (BMI) which was classified as normal weight, underweight, overweight, and obese. Also, as exposure variables, dietary intakes of fruits, vegetables and dairy products were extracted from the STEPS questionnaires. Multinomial logistic regression was used to evaluate the association between dairy products, FVs consumption, and BMI category in the crude and adjusted models. Results In the adjusted model, we observed 41% [odd ratio (OR) = 0.59; 95% confidence intervals (CI): 0.50, 0.68, P < 0.001], 27% (OR = 0.73; 95% CI: 0.62, 0.84, P < 0.001), and 26% (OR = 0.74; 95% CI: 0.63, 0.87, P < 0.001) lower odds of being overweight, and 46% (OR = 0.54; 95% CI: 0.46, 0.64, P < 0.001), 29% (OR = 0.71; 95% CI: 0.60, 0.84, P < 0.001), and 21% (OR = 0.79; 95% CI: 0.65, 0.95, P = 0.014) decrease in obesity odds among the participants who consumed 1, 2, and more than 2 servings of fruits per day in comparison to less than one serving, respectively. Also, we observed participants who consumed 1, 2, and more than 2 servings in comparison to less than one serving of dairy products per day had 31% (OR = 0.69; 95% CI: 0.58, 0.81, P < 0.001), 23% (OR = 0.77; 95 %CI: 0.65, 0.91, P = 0.002), and 21% (OR = 0.79; 95% CI: 0.67, 0.94, P = 0.011) lower odds of being overweight and 47% (OR = 0.53; 95% CI: 0.44, 0.64, P < 0.001), 36% (OR = 0.64; 95% CI: 0.53, 0.77, P < 0.001), and 32% (OR = 0.68; 95% CI: 0.56, 0.83, P < 0.001) lower odds of obesity, respectively. In addition, compared to participants who consumed less than 2 servings of vegetables per day, participants who consumed 2, 3, and more than 3 servings had 40% (OR = 0.60; 95% CI: 0.47, 0.76, P < 0.001), 29% (OR = 0.71; 95% CI: 0.56, 0.90, P = 0.006), and 26% (OR = 0.74; 95% CI: 0.57, 0.96, P = 0.027) lower odds of being overweight, respectively. Furthermore, we observed 36% lower odds of obesity among participants who ate 2 servings of vegetables per day compared to less than 2 serving (OR = 0.64; 95% CI: 0.49, 0.84, P = 0.002). Conclusion Our findings showed that intake of FVs and dairy products is associated with a healthier weight status in adults. Further studies are needed to confirm these findings.
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Affiliation(s)
- Mehran Nouri
- Department of Community Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran,Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran,Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zainab Shateri
- Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Shiva Faghih
- Department of Community Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran,Nutrition Research Center, Shiraz University of Medical Sciences, Shiraz, Iran,*Correspondence: Shiva Faghih,
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Gu P, Pu B, Chen B, Zheng X, Zeng Z, Luo W. Effects of vitamin D deficiency on blood lipids and bone metabolism: a large cross-sectional study. J Orthop Surg Res 2023; 18:20. [PMID: 36611173 PMCID: PMC9826596 DOI: 10.1186/s13018-022-03491-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 12/30/2022] [Indexed: 01/09/2023] Open
Abstract
To investigate the relationship between serum high-density lipoprotein (HDL-C) and spinal bone mineral density (BMD) under different serum 25-hydroxyvitamin D (25 (OH) D) levels in adults over 40 years old and to explore its mechanism. We include participants over the age of 40 with data on HDL-C, 25 (OH) D, spinal BMD, and other variables in the National Health and Nutrition Examination Survey 2007-2010 in the analysis. A weighted multiple linear regression model was used to evaluate the association between serum HDL-C and spinal BMD in different gender, ages, and serum 25 (OH) D levels. A total of 3599 subjects aged ≥ 40 years old were included in this study. Univariate analysis of the complete correction model showed a negative correlation between serum HDL-C and spinal BMD. In the two subgroups of serum 25 (OH) D, we found that the higher the serum HDL-C in the female with serum 25 (OH) D < 75 nmol/L aged 40-59 years old, the lower the total spinal BMD, and a similar relationship was found in the lumbar spine. However, no similar relationship was found in all populations with serum 25 (OH) D ≥ 75 nmol/L and males with serum 25 (OH) D < 75 nmol/L. These results suggest that among Americans over the age of 40, the increase in serum HDL-C is related to decreased BMD of spine only in women aged 40-59 years with vitamin D insufficiency or deficiency.
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Affiliation(s)
- Peng Gu
- grid.411866.c0000 0000 8848 7685Guangzhou University of Chinese Medicine, Guangzhou, Guangdong China
| | - Bin Pu
- grid.411866.c0000 0000 8848 7685Guangzhou University of Chinese Medicine, Guangzhou, Guangdong China
| | - BaiHang Chen
- grid.411866.c0000 0000 8848 7685Guangzhou University of Chinese Medicine, Guangzhou, Guangdong China
| | - XiaoHui Zheng
- grid.411866.c0000 0000 8848 7685Guangzhou University of Chinese Medicine, Guangzhou, Guangdong China ,grid.411866.c0000 0000 8848 7685The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, 510405 Guangdong China
| | - ZhanPeng Zeng
- grid.411866.c0000 0000 8848 7685Guangzhou University of Chinese Medicine, Guangzhou, Guangdong China ,grid.411866.c0000 0000 8848 7685The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, 510405 Guangdong China
| | - WeiDong Luo
- grid.411866.c0000 0000 8848 7685Guangzhou University of Chinese Medicine, Guangzhou, Guangdong China ,grid.411866.c0000 0000 8848 7685The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, 510405 Guangdong China
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Shi Y, Zhong H, Pang L. Maternal micronutrient disturbance as risks of offspring metabolic syndrome. J Trace Elem Med Biol 2023; 75:127097. [PMID: 36272194 DOI: 10.1016/j.jtemb.2022.127097] [Citation(s) in RCA: 2] [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: 06/08/2022] [Revised: 10/08/2022] [Accepted: 10/13/2022] [Indexed: 11/06/2022]
Abstract
Metabolic syndrome (MetS) is defined as a constellation of individual metabolic disturbances, including central obesity, hypertension, dyslipidemia, and insulin resistance. The established pathogenesis of MetS varies extensively with gender, age, ethnic background, and nutritional status. In terms of nutritional status, micronutrients are more likely to be discounted as essential components of required nutrition than macronutrients due to the small amount required. Numerous observational studies have shown that pregnant women frequently experience malnutrition, especially in developing and low-income countries, resulting in chronic MetS in the offspring due to the urgent and increasing demands for micronutrients during gestation and lactation. Over the past few decades, scientific developments have revolutionized our understanding of the association between balanced maternal micronutrients and MetS in the offspring. Examples of successful individual, dual, or multiple maternal micronutrient interventions on the offspring include iron for hypertension, selenium for type 2 diabetes, and a combination of folate and vitamin D for adiposity. In this review, we aim to elucidate the effects of maternal micronutrient intake on offspring metabolic homeostasis and discuss potential perspectives and challenges in the field of maternal micronutrient interventions.
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Affiliation(s)
- Yujie Shi
- Nanjing Maternal and Child Health Medical Institute, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, China.
| | - Hong Zhong
- Nanjing Maternal and Child Health Medical Institute, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, China
| | - Lingxia Pang
- Department of Child Healthcare, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, China.
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Li YF, Zheng X, Gao WL, Tao F, Chen Y. Association between serum vitamin D levels and visceral adipose tissue among adolescents: a cross-sectional observational study in NHANES 2011–2015. BMC Pediatr 2022; 22:634. [PMID: 36333688 PMCID: PMC9635166 DOI: 10.1186/s12887-022-03688-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022] Open
Abstract
Background In recent years, obesity and vitamin D deficiency are more prevalent among adolescents. Improving our knowledge of the link between vitamin D and visceral adipose tissue (VAT) is essential for the health of adolescents. This study aimed to examine the connection between serum vitamin D levels and VAT mass among adolescents participating in the United States. Methods This is a cross-sectional study that used data from the 2011 to 2015 National Health and Nutrition Examination Survey (NHANES). The connection between serum vitamin D levels and VAT was investigated using weighted multiple linear regression models. Potential nonlinear relationships were explored using smooth curve fitting. Results The analysis included 3171 adolescents aged 12–19 years. Vitamin D levels were shown to be inversely linked with VAT in the full-adjusted model (β = − 0.34, 95% CI: − 0.49 to − 0.19). When stratified analyses by gender, this negative relationship persisted in the girls’ group (β = − 0.39, 95% CI: − 0.60 to − 0.19), but not in the boys’ group (β = − 0.06, 95% CI: − 0.25 to 0.13). When stratified analysis by race, this negative relationship persisted in the Mexican American group (β = − 0.61, 95% CI: − 1.03 to − 0.19), and the non-Hispanic White group (β = − 0.27, 95% CI: − 0.54 to − 0.01), but not in the other groups. Conclusions Our findings confirmed that serum vitamin D levels negatively correlated with VAT among adolescents in the United State, especially in girls, the Mexican American and non-Hispanic White. Further research is needed to determine whether increasing serum vitamin D levels decrease VAT among adolescents. Supplementary Information The online version contains supplementary material available at 10.1186/s12887-022-03688-2.
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Hajhashemy Z, Lotfi K, Heidari Z, Saneei P. Serum Vitamin D Levels in Relation to Abdominal Obesity in Children and Adolescents: A Systematic Review and Dose-Response Meta-Analysis. Front Nutr 2022; 9:806459. [PMID: 35252295 PMCID: PMC8888413 DOI: 10.3389/fnut.2022.806459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 01/12/2022] [Indexed: 11/28/2022] Open
Abstract
Background Findings of epidemiological studies that investigated the relationship between serum vitamin D levels and abdominal obesity were inconsistent. To evaluate the relationship between blood vitamin D levels and abdominal obesity in children and adolescents, we did a comprehensive review and dose-response meta-analysis. Methods A comprehensive search in electronic databases including Scopus, Web of Science (ISI), MEDLINE (Pubmed), EMBASE, and Google Scholar was conducted, up to May 2021, for epidemiological studies that investigated the linkage between serum vitamin D levels (as the exposure) and abdominal obesity (as the outcome) in children and adolescents. Results Combining 19 effect sizes from 14 cross-sectional studies that included 29,353 apparently healthy children illustrated that the highest vs. lowest level of serum vitamin D was related to a 35% reduced odds of abdominal obesity [odds ratio (OR): 0.65; 95% CI: 0.50, 0.84]. Linear dose-response analysis revealed that each 10 ng/ml increase in serum vitamin D levels was related to a 7% decrease in odds of abdominal obesity (OR: 0.93; 95% CI: 0.90, 0.95), only among investigations that used percentiles of waist circumference (>75th or 90th) to define the disorder (including 6,868 total subjects and 1,075 cases with abdominal obesity). Increasing serum vitamin D levels from 20 to 40 ng/ml was related to reduce odds of abdominal obesity in children. Conclusion A negative relationship between blood vitamin D levels and abdominal obesity in children and adolescents was discovered in this meta-analysis of epidemiologic studies. Among investigations that used waist circumference percentiles to define the disorder, the relationship was in a dose-response manner. To affirm this relationship, more research studies are needed, particularly using a prospective design. Systematic Review Registration https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42021261319, PROSPERO 2021, identifier: CRD42021261319.
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Affiliation(s)
- Zahra Hajhashemy
- Students' Scientific Research Center, 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
| | - Keyhan Lotfi
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Heidari
- Department of Biostatistics and Epidemiology, School of Health, 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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Gao YX, Zhang J, Man Q, Li Y, Jia S. The association between vitamin D levels and metabolic syndrome components among metropolitan adolescent population. J Pediatr Endocrinol Metab 2022; 35:55-63. [PMID: 34757705 DOI: 10.1515/jpem-2021-0581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 10/04/2021] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Vitamin D promotes both lipolysis and lipogenesis, and some pediatric studies showed inconsistent associations between vitamin D and metabolic syndrome (MetS). This cross-sectional study aimed to examine the association between vitamin D levels and MetS components among metropolitan adolescents. METHODS A total of 4,149 adolescents aged 10-18 years were recruited from 23 metropolises in China. The MetS conditions were assessed according to the International Diabetes Federation consensus definition, and the serum 25-hydroxy vitamin D (25(OH)D) concentrations were analyzed. The association between MetS components and serum 25(OH)D levels was analyzed by the logistic regression model. Restricted cubic spline was applied to the model nonlinear association. RESULTS Prevalence of vitamin D deficiency was 74.9%, and 41.2% of study participants had at least one MetS component. After adjustment, the significant trend for a lower waist-to-height ratio was not observed in study participants with higher serum 25(OH)D quartile (p=0.57), but a significant nonlinear association between abdominal obesity and serum 25(OH)D levels was found (p=0.04): the highest risk of abdominal obesity occurred at 14.1 ng/mL of serum 25(OH)D. The association of serum 25(OH)D was significantly inverse with MetS (OR: 0.95; 95% CI: 0.92-0.98), but not with raised triglycerides (OR: 0.99; 95% CI: 0.96-1.01), raised blood pressure (OR: 0.99; 95% CI: 0.97-1.01) and impaired fasting glycemia (OR: 1.03; 95% CI: 1.01-1.04). CONCLUSIONS The net effect of vitamin D on lipid metabolism may be concentration-dependent, and the actual effect of vitamin D on MetS process may be complex among metropolitan adolescents, though serum 25(OH)D is inversely associated with MetS.
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Affiliation(s)
- Yi-Xiong Gao
- National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Peking, China
| | - Jian Zhang
- National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Peking, China
| | - Qingqing Man
- National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Peking, China
| | - Yuqian Li
- National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Peking, China
| | - Shanshan Jia
- National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Peking, China
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Szymczak-Pajor I, Miazek K, Selmi A, Balcerczyk A, Śliwińska A. The Action of Vitamin D in Adipose Tissue: Is There the Link between Vitamin D Deficiency and Adipose Tissue-Related Metabolic Disorders? Int J Mol Sci 2022; 23:956. [PMID: 35055140 PMCID: PMC8779075 DOI: 10.3390/ijms23020956] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/09/2022] [Accepted: 01/10/2022] [Indexed: 12/11/2022] Open
Abstract
Adipose tissue plays an important role in systemic metabolism via the secretion of adipocytokines and storing and releasing energy. In obesity, adipose tissue becomes dysfunctional and characterized by hypertrophied adipocytes, increased inflammation, hypoxia, and decreased angiogenesis. Although adipose tissue is one of the major stores of vitamin D, its deficiency is detective in obese subjects. In the presented review, we show how vitamin D regulates numerous processes in adipose tissue and how their dysregulation leads to metabolic disorders. The molecular response to vitamin D in adipose tissue affects not only energy metabolism and adipokine and anti-inflammatory cytokine production via the regulation of gene expression but also genes participating in antioxidant defense, adipocytes differentiation, and apoptosis. Thus, its deficiency disturbs adipocytokines secretion, metabolism, lipid storage, adipogenesis, thermogenesis, the regulation of inflammation, and oxidative stress balance. Restoring the proper functionality of adipose tissue in overweight or obese subjects is of particular importance in order to reduce the risk of developing obesity-related complications, such as cardiovascular diseases and diabetes. Taking into account the results of experimental studies, it seemed that vitamin D may be a remedy for adipose tissue dysfunction, but the results of the clinical trials are not consistent, as some of them show improvement and others no effect of this vitamin on metabolic and insulin resistance parameters. Therefore, further studies are required to evaluate the beneficial effects of vitamin D, especially in overweight and obese subjects, due to the presence of a volumetric dilution of this vitamin among them.
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Affiliation(s)
- Izabela Szymczak-Pajor
- Department of Nucleic Acid Biochemistry, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland;
| | - Krystian Miazek
- Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, 15 Wroblewskiego, 93-590 Lodz, Poland;
| | - Anna Selmi
- Department of Molecular Biophysics, University of Lodz, 141/143 Pomorska, 90-236 Lodz, Poland; (A.S.); (A.B.)
| | - Aneta Balcerczyk
- Department of Molecular Biophysics, University of Lodz, 141/143 Pomorska, 90-236 Lodz, Poland; (A.S.); (A.B.)
| | - Agnieszka Śliwińska
- Department of Nucleic Acid Biochemistry, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland;
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Karava V, Christoforidis A, Kondou A, Dotis J, Printza N. Update on the Crosstalk Between Adipose Tissue and Mineral Balance in General Population and Chronic Kidney Disease. Front Pediatr 2021; 9:696942. [PMID: 34422722 PMCID: PMC8378583 DOI: 10.3389/fped.2021.696942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 07/06/2021] [Indexed: 11/17/2022] Open
Abstract
Adipose tissue is nowadays considered as a major endocrine organ, which apart from controlling lipid metabolism, displays a significant role in energy expenditure, food intake and in the regulation of various systemic physiological processes. Adipose derived pro-inflammatory cytokines and adipokines, particularly leptin and adiponectin, provide inter-communication of adipose tissue with various metabolic pathways, ultimately resulting in a complex network of interconnected organ systems. Recent clinical and experimental research has been focused on exploring the direct interaction between adipokine profile and elements of mineral metabolism, including parathormone (PTH), fibroblast growth factor-23 (FGF23) and calcitriol. The emerging crosstalk between adipose tissue and calcium and phosphorus homeostasis suggests that metabolic disorders from one system may directly affect the other and vice versa. It is current knowledge that fat metabolism disturbance, commonly encountered in obese individuals, influences the expression of calciotriopic hormones in general population, while various clinical trials attempting to successfully achieve body fat loss by modulating mineral profile have been published. In chronic kidney disease (CKD) state, there is an increasing evidence suggesting that mineral disorders, influence adipose tissue and linked endocrine function. On the contrary, the impact of disturbed fat metabolism on CKD related mineral disorders has been also evocated in clinical studies. Recognizing the pathogenetic mechanisms of communication between adipose tissue and mineral balance is critical for understanding the effects of metabolic perturbations from the one system to the other and for identifying possible therapeutic targets in case of disrupted homeostasis in one of the two connected systems. To that end, this review aims to enlighten the recent advances regarding the interplay between mineral metabolism, fat mass and adipokine profile, based on in vitro, in vivo and clinical studies, in general population and in the course of CKD.
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Affiliation(s)
- Vasiliki Karava
- Pediatric Nephrology Unit, 1st Department of Pediatrics, Hippokratio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Athanasios Christoforidis
- Pediatric Endocrinology Unit, 1st Department of Pediatrics, Hippokratio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Antonia Kondou
- Pediatric Nephrology Unit, 1st Department of Pediatrics, Hippokratio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - John Dotis
- Pediatric Nephrology Unit, 1st Department of Pediatrics, Hippokratio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Nikoleta Printza
- Pediatric Nephrology Unit, 1st Department of Pediatrics, Hippokratio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
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12
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The Molecular Mechanisms by Which Vitamin D Prevents Insulin Resistance and Associated Disorders. Int J Mol Sci 2020; 21:ijms21186644. [PMID: 32932777 PMCID: PMC7554927 DOI: 10.3390/ijms21186644] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 09/07/2020] [Accepted: 09/09/2020] [Indexed: 02/06/2023] Open
Abstract
Numerous studies have shown that vitamin D deficiency is very common in modern societies and is perceived as an important risk factor in the development of insulin resistance and related diseases such as obesity and type 2 diabetes (T2DM). While it is generally accepted that vitamin D is a regulator of bone homeostasis, its ability to counteract insulin resistance is subject to debate. The goal of this communication is to review the molecular mechanism by which vitamin D reduces insulin resistance and related complications. The university library, PUBMED, and Google Scholar were searched to find relevant studies to be summarized in this review article. Insulin resistance is accompanied by chronic hyperglycaemia and inflammation. Recent studies have shown that vitamin D exhibits indirect antioxidative properties and participates in the maintenance of normal resting ROS level. Appealingly, vitamin D reduces inflammation and regulates Ca2+ level in many cell types. Therefore, the beneficial actions of vitamin D include diminished insulin resistance which is observed as an improvement of glucose and lipid metabolism in insulin-sensitive tissues.
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13
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Derosa G, D'Angelo A, Martinotti C, Valentino MC, Di Matteo S, Bruno GM, Maffioli P. Vitamin D3 supplementation improves glycemic control in type 2 diabetic patients: Results from an Italian clinical trial. INT J VITAM NUTR RES 2020; 92:91-100. [PMID: 32795167 DOI: 10.1024/0300-9831/a000673] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Background: to evaluate the effects of Vitamin D3 on glyco-metabolic control in type 2 diabetic patients with Vitamin D deficiency. Methods: one hundred and seventeen patients were randomized to placebo and 122 patients to Vitamin D3. We evaluated anthropometric parameters, glyco-metabolic control, and parathormone (PTH) value at baseline, after 3, and 6 months. Results: a significant reduction of fasting, and post-prandial glucose was recorded in Vitamin D3 group after 6 months. A significant HbA1c decrease was observed in Vitamin D3 (from 7.6% or 60 mmol/mol to 7.1% or 54 mmol) at 6 months compared to baseline, and to placebo (p < 0.05 for both). At the end of the study period, we noticed a change in the amount in doses of oral or subcutaneous hypoglycemic agents and insulin, respectively. The use of metformin, acarbose, and pioglitazone was significantly lower (p = 0.037, p = 0.048, and p = 0.042, respectively) than at the beginning of the study in the Vitamin D3 therapy group. The units of Lispro, Aspart, and Glargine insulin were lower in the Vitamin D3 group at the end of the study (p = 0.031, p = 0.037, and p = 0.035, respectively) than in the placebo group. Conclusions: in type 2 diabetic patients with Vitamin D deficiency, the restoration of value in the Vitamin D standard has led not only to an improvement in the glyco-metabolic compensation, but also to a reduced posology of some oral hypoglycemic agents and some types of insulin used.
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Affiliation(s)
- Giuseppe Derosa
- Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy.,Laboratory of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Angela D'Angelo
- Laboratory of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Chiara Martinotti
- S.A.V.E. Studi Analisi Valutazioni Economiche Research Centre, Milan, Italy
| | | | - Sergio Di Matteo
- S.A.V.E. Studi Analisi Valutazioni Economiche Research Centre, Milan, Italy
| | - Giacomo M Bruno
- Department of Management information and production Engineering, University of Bergamo, Bergamo, Italy.,Drug Science Department, University of Pavia, Pavia, Italy
| | - Pamela Maffioli
- Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy
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14
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VDR regulates energy metabolism by modulating remodeling in adipose tissue. Eur J Pharmacol 2019; 865:172761. [DOI: 10.1016/j.ejphar.2019.172761] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/18/2019] [Accepted: 10/25/2019] [Indexed: 01/19/2023]
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15
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Greco EA, Lenzi A, Migliaccio S. Role of Hypovitaminosis D in the Pathogenesis of Obesity-Induced Insulin Resistance. Nutrients 2019; 11:nu11071506. [PMID: 31266190 PMCID: PMC6682882 DOI: 10.3390/nu11071506] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 12/13/2022] Open
Abstract
Obesity and type 2 diabetes have both rapidly increased during the last decades and are continuing to increase at an alarming rate worldwide. Obesity and impaired glucose homeostasis are closely related, and during the last decades of investigation about vitamin D, several clinical and epidemiological studies documented an inverse correlation between circulating vitamin D levels, central adiposity and the development of insulin resistance and diabetes. The insufficient sun exposure and outdoor activities of obese individuals, the storage of vitamin D in adipose tissue, because of its lipophilic properties, and the vitamin D-mediated modulation of adipogenesis, insulin secretion, insulin sensitivity and the immune system, are the main reasons for the close relationship between obesity, glucose homeostasis and hypovitaminosis D. Then objective of this review is to explore the pathophysiological mechanism(s) by which vitamin D modulates glycemic control and insulin sensitivity in obese individuals.
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Affiliation(s)
- Emanuela A Greco
- Department of Experimental Medicine, Section of Physiopathology, Endocrinology and Food Science, University of Rome Sapienza, 00161 Rome, Italy
| | - Andrea Lenzi
- Department of Experimental Medicine, Section of Physiopathology, Endocrinology and Food Science, University of Rome Sapienza, 00161 Rome, Italy
| | - Silvia Migliaccio
- Department of Movement, Human and Health Sciences, Section of Health Science, University of Rome Foro Italico, 00135 Rome, Italy.
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16
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Zhang P, Schatz A, Adeyemi B, Kozminski D, Welsh J, Tenniswood M, Wang WLW. Vitamin D and testosterone co-ordinately modulate intracellular zinc levels and energy metabolism in prostate cancer cells. J Steroid Biochem Mol Biol 2019; 189:248-258. [PMID: 30664926 DOI: 10.1016/j.jsbmb.2019.01.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 01/03/2019] [Accepted: 01/12/2019] [Indexed: 12/21/2022]
Abstract
Vitamin D3 and its receptor are responsible for controlling energy expenditure in adipocytes and have direct roles in the transcriptional regulation of energy metabolic pathways. This phenomenon also has a significant impact on the etiology of prostate cancer (PCa). Using several in vitro models, the roles of vitamin D3 on energy metabolism and its implication in primary, early, and late invasive PCa were investigated. BODIPY staining and qPCR analyses show that 1,25-dihydroxyvitamin D3 (1,25(OH)2D3) up-regulates de novo lipogenesis in PCa cells by orchestrating transcriptional regulation that affects cholesterol and lipid metabolic pathways. This lipogenic effect is highly dependent on the interaction of several nuclear receptors and their corresponding ligands, including androgen receptor (AR), vitamin D receptor (VDR), and retinoid X receptor (RXR). In contrast, inhibition of peroxisome proliferator-activated receptor alpha (PPARα) signaling blocks the induction of the lipogenic phenotype induced by these receptors. Furthermore, 1,25(OH)2D3, T, and 9 cis-retinoic acid (9-cis RA) together redirect cytosolic citrate metabolism toward fatty acid synthesis by restoring normal prostatic zinc homeostasis that functions to truncate TCA cycle metabolism. 1,25(OH)2D3, T, and 9-cis RA also exert additional control of TCA cycle metabolism by down-regulating SLC25A19, which limits the availability of the co-factor thiamine pyrophosphate (TPP) that is required for enzymatic catalyzation of citrate oxidation. This extensive metabolic reprogramming mediated by 1,25(OH)2D3, T, and 9-cis RA is preserved in all in vitro cell lines investigated. These data suggest that 1,25(OH)2D3 and T are important regulators of normal prostatic energy metabolism. Based on the close association between energy metabolism and cancer progression, supplementation of vitamin D3 and testosterone can restrict the energy production that is required to drive PCa progression by maintaining proper zinc homeostasis and inhibiting TCA cycle activity in PCa cells.
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Affiliation(s)
- Polly Zhang
- Department of Biochemistry, Queen's University, Kingston, ON, K7L 3N6, Canada
| | - Adam Schatz
- Department of Urology, Albany Medical College, Albany, NY, 12208, United States
| | - Babatunde Adeyemi
- Department of Biological Sciences, College of Arts and Sciences, University at Albany, Albany, NY, 12222, United States
| | - David Kozminski
- Department of Urology, Albany Medical College, Albany, NY, 12208, United States
| | - JoEllen Welsh
- Department of Environmental Health Sciences, Cancer Research Center, School of Public Health, University at Albany, Rensselaer, NY 12144, United States; Department of Biomedical Sciences, Cancer Research Center, School of Public Health, University at Albany, Rensselaer, NY, 12144, United States
| | - Martin Tenniswood
- Department of Biomedical Sciences, Cancer Research Center, School of Public Health, University at Albany, Rensselaer, NY, 12144, United States
| | - Wei-Lin Winnie Wang
- Department of Biomedical Sciences, Cancer Research Center, School of Public Health, University at Albany, Rensselaer, NY, 12144, United States.
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Einarsdottir E, Pekkinen M, Krjutškov K, Katayama S, Kere J, Mäkitie O, Viljakainen H. A preliminary transcriptome analysis suggests a transitory effect of vitamin D on mitochondrial function in obese young Finnish subjects. Endocr Connect 2019; 8:559-570. [PMID: 30965285 PMCID: PMC6499919 DOI: 10.1530/ec-18-0537] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 04/09/2019] [Indexed: 12/14/2022]
Abstract
OBJECTIVE The effect of vitamin D at the transcriptome level is poorly understood, and furthermore, it is unclear if it differs between obese and normal-weight subjects. The objective of the study was to explore the transcriptome effects of vitamin D supplementation. DESIGN AND METHODS We analysed peripheral blood gene expression using GlobinLock oligonucleotides followed by RNA sequencing in individuals participating in a 12-week randomised double-blinded placebo-controlled vitamin D intervention study. The study involved 18 obese and 18 normal-weight subjects (of which 20 males) with mean (±s.d.) age 20.4 (±2.5) years and BMIs 36 (±10) and 23 (±4) kg/m2, respectively. The supplemental daily vitamin D dose was 50 µg (2000 IU). Data were available at baseline, 6- and 12-week time points and comparisons were performed between the vitamin D and placebo groups separately in obese and normal-weight subjects. RESULTS Significant transcriptomic changes were observed at 6 weeks, and only in the obese subjects: 1724 genes were significantly upregulated and 186 genes were downregulated in the vitamin D group compared with placebo. Further analyses showed several enriched gene categories connected to mitochondrial function and metabolism, and the most significantly enriched pathway was related to oxidative phosphorylation (adjusted P value 3.08 × 10-14). Taken together, our data suggest an effect of vitamin D supplementation on mitochondrial function in obese subjects. CONCLUSIONS Vitamin D supplementation affects gene expression in obese, but not in normal-weight subjects. The altered genes are enriched in pathways related to mitochondrial function. The present study increases the understanding of the effects of vitamin D at the transcriptome level.
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Affiliation(s)
- Elisabet Einarsdottir
- Folkhälsan Institute of Genetics, University of Helsinki, Helsinki, Finland
- Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Minna Pekkinen
- Folkhälsan Institute of Genetics, University of Helsinki, Helsinki, Finland
- Children’s Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Kaarel Krjutškov
- Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland
- Competence Centre on Health Technologies, Tartu, Estonia
| | - Shintaro Katayama
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Juha Kere
- Folkhälsan Institute of Genetics, University of Helsinki, Helsinki, Finland
- Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
- School of Basic and Medical Biosciences, King’s College London, Guy’s Hospital, London, United Kingdom
| | - Outi Mäkitie
- Folkhälsan Institute of Genetics, University of Helsinki, Helsinki, Finland
- Children’s Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Molecular Medicine and Surgery and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Heli Viljakainen
- Folkhälsan Institute of Genetics, University of Helsinki, Helsinki, Finland
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
- Correspondence should be addressed to H Viljakainen:
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18
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Durgarao Y, Manjrekar PA, Adhikari P, Chakrapani M, Rukmini MS. Comprehensive Review on Diabetes Associated Cardiovascular Complications - The Vitamin D Perspective. Cardiovasc Hematol Disord Drug Targets 2019; 19:139-153. [PMID: 30648528 DOI: 10.2174/1871529x19666190114155302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 11/14/2018] [Accepted: 11/28/2018] [Indexed: 12/14/2022]
Abstract
Vitamin D, a steroid hormone is primarily known for its role in calcium and bone mineral homeostasis. Over the years, vitamin D has been implicated in various non-skeletal diseases. The extraskeletal phenomenon can be attributed to the presence of vitamin D receptors (VDRs) in almost all cells and identification of 1-α hydroxylase in extrarenal tissues. The vitamin D deficiency (VDD) pandemic was globally reported with increasing evidence and paralleled the prevalence of diabetes, obesity and cardiovascular diseases (CVDs). A dependent link was proposed between hypovitaminosis D glycemic status, insulin resistance and also the other major factors associated with type 2 diabetes leading to CVDs. Insulin resistance plays a central role in both type 2 diabetes and insulin resistance syndrome. These 2 disorders are associated with distinct etiologies including hypertension, atherogenic dyslipidemia, and significant vascular abnormalities that could lead to endothelial dysfunction. Evidence from randomised clinical trials and meta-analysis, however, yielded conflicting results. This review summarizes the role of vitamin D in the regulation of glucose homeostasis with an emphasis on insulin resistance, blood pressure, dyslipidaemia, endothelial dysfunction and related cardiovascular diseases and also underline the plausible mechanisms for all the documented effects.
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Affiliation(s)
- Y Durgarao
- Department of Biochemistry, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, India
| | - Poornima A Manjrekar
- Department of Biochemistry, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, India
| | - Prabha Adhikari
- Department of Internal Medicine, Yenepoya University, Mangalore, Karnataka, India
| | - M Chakrapani
- Department of Internal Medicine, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, India
| | - M S Rukmini
- Department of Biochemistry, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, India
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19
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Park JE, Pichiah PBT, Cha YS. Vitamin D and Metabolic Diseases: Growing Roles of Vitamin D. J Obes Metab Syndr 2018; 27:223-232. [PMID: 31089567 PMCID: PMC6513299 DOI: 10.7570/jomes.2018.27.4.223] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 11/15/2018] [Accepted: 12/01/2018] [Indexed: 01/10/2023] Open
Abstract
Vitamin D, a free sunshine vitamin available for mankind from nature, is capable to avert many health-related critical circumstances. Vitamin D is no more regarded as a nutrient involved in bone metabolism alone. The presence of vitamin D receptor in a number of tissues implies that vitamin D has various physiological roles apart from calcium and phosphorus metabolism. Low serum vitamin D has been found to be associated with various types of metabolic illness such as obesity, diabetes mellitus, insulin resistance, cardiovascular diseases including hypertension. Various studies reported that vitamin D insufficiency or deficiency in linked with metabolic syndrome risk. This review focuses on various metabolic diseases and its relationship with serum vitamin D status.
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Affiliation(s)
- Jung Eun Park
- Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju, Korea
| | - P B Tirupathi Pichiah
- Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju, Korea
| | - Youn-Soo Cha
- Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju, Korea
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20
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Schutkowski A, Max D, Bönn M, Brandsch C, Grundmann SM, Hirche F, Staege MS, Stangl GI. Vitamin D Does Not Play a Functional Role in Adipose Tissue Development in Rodent Models. Mol Nutr Food Res 2018; 62. [PMID: 29205876 DOI: 10.1002/mnfr.201700726] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 10/26/2017] [Indexed: 11/06/2022]
Abstract
SCOPE Several studies have proposed a role of vitamin D in adipogenesis. Here, we sought to study the impact of the vitamin D receptor (Vdr) on adipocyte size in young and old mice and the effect of maternal vitamin D deficiency on fetal adipogenesis. METHODS AND RESULTS Histological analysis of adipose tissues shows that Vdr knockout (KO) mice have smaller adipocytes than wild-type (WT) mice. Next, we compare young and old Vdr-KO and WT mice and find no differences in adipocyte sizes between weaned Vdr-KO and WT mice. However, 1-year-old Vdr-KO mice, suffering from alopecia, have smaller-sized adipocytes than WT mice, although they consume more food. To elucidate whether vitamin D can directly impact adipocyte development at a critical stage of adipogenesis, we feed rat dams a vitamin D deficient (0 IU kg-1 ) or vitamin D adequate (1000 IU kg-1 ) diet. Neither DNA microarray analysis of the adipose tissues of the newborn rats nor the adipocyte sizes of 21-day-old offspring show significant differences between the two groups. CONCLUSION Data indicate that vitamin D does not play a fundamental role in adipogenesis because vitamin D does not affect fetal adipogenesis. Moreover, the smaller adipocytes observed in adult Vdr-KO mice are presumably caused by an increased energy expenditure due to alopecia.
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Affiliation(s)
- Alexandra Schutkowski
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Daniela Max
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Markus Bönn
- Department of Soil Ecology, UFZ Helmholtz Centre for Environmental Research, Halle (Saale), Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | - Corinna Brandsch
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Sarah M Grundmann
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Frank Hirche
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Martin S Staege
- University Clinic and Polyclinic for Child and Adolescent Medicine, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Gabriele I Stangl
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
- Competence Cluster of Cardiovascular Health and Nutrition (nutriCARD), Halle-Jena-Leipzig, Germany
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Abstract
Vitamin D, a secosteroid predominately obtained by endogenous production, has in recent years been linked to obesity and its comorbidities. The purpose of this review is to draw conclusions from animal and human studies on the effects of vitamin D on adipogenesis to identify the molecular links between vitamin D and obesity. The information presented herein was obtained from 4 databases (PubMed, CINAHL, Cochrane Library, Scopus) using predefined search terms, as well as research literature and other reviews. The effects of vitamin D on adipogenesis have been researched in several animal models, and the majority of these studies suggest vitamin D plays an inhibitory role in adipogenesis. Studies into vitamin D status and obesity in humans are limited, with the majority being observational epidemiological studies that provide no conclusions on cause and effect or clear links on the molecular mechanisms. The few cell culture and supplementation studies that have investigated adipogenesis in human cells indicate that, in contrast to findings from rodent studies, vitamin D is proadipogenic. There is insufficient evidence to determine whether 1) vitamin D deficiency is associated with a lean or obese phenotype, 2) vitamin D deficiency is a consequence of obesity, or (3) the effects of vitamin D on fat tissue are due to interactions with calcium.
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Affiliation(s)
- Clare F Dix
- Centre for Dietetic Research, School of Human Movement and Nutrition Sciences, University of Queensland, Brisbane, Australia
| | | | - Olivia R L Wright
- Centre for Dietetic Research, School of Human Movement and Nutrition Sciences, University of Queensland, Brisbane, Australia
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22
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Marwaha RK, Garg MK, Mahalle N, Bhadra K, Tandon N. Role of Parathyroid Hormone in Determination of Fat Mass in Patients with Vitamin D Deficiency. Indian J Endocrinol Metab 2017; 21:848-853. [PMID: 29285447 PMCID: PMC5729672 DOI: 10.4103/ijem.ijem_42_17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Obesity has become a global epidemic and it is rising is Asia. Vitamin D deficiency (VDD) is widely prevalent in the Indian subcontinent. Studies have linked VDD to obesity and shown correlation between parathyroid hormone (PTH), 25-hydroxy Vitamin D (25(OH)D), and fat mass (FM). However, studies on the role of PTH among subjects with VDD are lacking. OBJECTIVE The objective of this study is to study the role of PTH in the determination of FM in participants with VDD. SUBJECTS Five hundred and fifty-one adults (m:247, f:304) were included in this study. MATERIALS AND METHODS Total and regional (trunk, arm, and leg) FM was assessed by dual X-ray absorptometry. Biochemical and hormonal parameters such as calcium, phosphorus, alkaline phosphatase, ionic calcium, 25(OH)D, and PTH were also analyzed. RESULTS The mean age of the study population was 58.8 ± 15.8 years (Male: [63.3 ± 13.1], Female: [55.2 ± 16.9]). FM and body mass index were significantly lower in females with higher levels of serum 25(OH)D. Total FM was negatively correlated with serum 25(OH)D (r = -0.363, P < 0.0001) and positively correlated with serum PTH (r: 0.262, P < 0.0001) in females only. Females with VDD and secondary hyperparathyroidism had higher FM than those with normal PTH. CONCLUSIONS Females with VDD had higher total and regional FM. However, this correlation was evident only in those with high serum PTH levels, suggesting a potential role of PTH in the accumulation of FM.
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Affiliation(s)
| | - M. K. Garg
- Departmemt of Endocrinology, Command Hospital (Southern Command), Pune, Maharashtra, India
| | - Namita Mahalle
- Department of Pathology, Deenanath Mangeshkar Hospital and Research Center, Pune, Maharashtra, India
| | - Kuntal Bhadra
- Department of Endocrinology, Thyroid Research Centre, Institute of Nuclear Medicine and Allied Sciences, New Delhi, India
| | - Nikhil Tandon
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India
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Silvagno F, Pescarmona G. Spotlight on vitamin D receptor, lipid metabolism and mitochondria: Some preliminary emerging issues. Mol Cell Endocrinol 2017; 450:24-31. [PMID: 28414049 DOI: 10.1016/j.mce.2017.04.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 04/07/2017] [Accepted: 04/09/2017] [Indexed: 12/19/2022]
Abstract
Transcriptional control and modulation of calcium fluxes underpin the differentiating properties of vitamin D (1,25(OH)2D3). In the latest years however few studies have pointed out the relevance of the mitochondrial effects of the hormone. It is now time to focus on the metabolic results of vitamin D receptor (VDR) action in mitochondria, which can explain the pleiotropic effects of 1,25(OH)2D3 and may elucidate few contrasting aspects of its activity. The perturbation of lipid metabolism described in VDR knockout mice and vitamin D deficient animals can be revisited based on the newly identified mechanism of action of 1,25(OH)2D3 in mitochondria. From the same point of view, the controversial role of 1,25(OH)2D3 in adipogenesis can be better interpreted.
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Affiliation(s)
- Francesca Silvagno
- Department of Oncology, University of Torino, Via Santena 5 bis, 10126 Torino, Italy.
| | - Gianpiero Pescarmona
- Department of Oncology, University of Torino, Via Santena 5 bis, 10126 Torino, Italy.
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Vitamin D deficiency and diabetes. Biochem J 2017; 474:1321-1332. [DOI: 10.1042/bcj20170042] [Citation(s) in RCA: 133] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 02/10/2017] [Accepted: 02/13/2017] [Indexed: 02/06/2023]
Abstract
Vitamin D deficiency has been linked to the onset of diabetes. This review summarizes the role of Vitamin D in maintaining the normal release of insulin by the pancreatic beta cells (β-cells). Diabetes is initiated by the onset of insulin resistance. The β-cells can overcome this resistance by releasing more insulin, thus preventing hyperglycaemia. However, as this hyperactivity increases, the β-cells experience excessive Ca2+ and reactive oxygen species (ROS) signalling that results in cell death and the onset of diabetes. Vitamin D deficiency contributes to both the initial insulin resistance and the subsequent onset of diabetes caused by β-cell death. Vitamin D acts to reduce inflammation, which is a major process in inducing insulin resistance. Vitamin D maintains the normal resting levels of both Ca2+ and ROS that are elevated in the β-cells during diabetes. Vitamin D also has a very significant role in maintaining the epigenome. Epigenetic alterations are a feature of diabetes by which many diabetes-related genes are inactivated by hypermethylation. Vitamin D acts to prevent such hypermethylation by increasing the expression of the DNA demethylases that prevent hypermethylation of multiple gene promoter regions of many diabetes-related genes. What is remarkable is just how many cellular processes are maintained by Vitamin D. When Vitamin D is deficient, many of these processes begin to decline and this sets the stage for the onset of diseases such as diabetes.
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Abbas MA. Physiological functions of Vitamin D in adipose tissue. J Steroid Biochem Mol Biol 2017; 165:369-381. [PMID: 27520301 DOI: 10.1016/j.jsbmb.2016.08.004] [Citation(s) in RCA: 193] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 08/03/2016] [Accepted: 08/08/2016] [Indexed: 12/14/2022]
Abstract
Adipose tissue has long been identified as the major site of vitamin D storage. Recent studies have demonstrated that VDR and vitamin D metabolizing enzymes are expressed in adipocytes. Furthermore, it has been shown that vitamin D regulates adipogenic gene expression as well as adipocyte apoptosis. Vitamin D is active in adipocytes at all levels. It interacts with membrane receptors, adaptor molecules, and nuclear coregulator proteins. Several functions of unliganded nVDR were discovered by studying human samples from patients having hereditary vitamin D resistant rickets, transgenic mice overexpressing the VDR and VDR knockout mice. Through its genomic action, vitamin D participates in the regulation of energy metabolism by controlling the expression of uncoupling proteins. In vitro, vitamin D stimulates lipogenesis and inhibits lipolysis by interacting with mVDR. mVDR is present in caveolae of the plasma membrane and is the same as the classic nVDR. In addition, vitamin D affects directly the expression of the appetite regulating hormone, leptin. Some researchers reported also that vitamin D regulates the expression of the insulin sensitizing hormone, adiponectin. Vitamin D reduced cytokine release and adipose tissue inflammation through the inhibition of NF-κB signaling. Scientific research investigating the role of adipose tissue resident immune cells in the pathogenesis of obesity-associated inflammation is scarce. Obesity is associated with vitamin D deficiency. However there is no scientific evidence to prove that vitamin D deficiency predispose to obesity. Vitamin D supplementation may prevent obesity but it does not lead to weight loss in obese subjects.
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Association of serum 25-hydroxyvitamin D and serum total cholesterol with depressive symptoms in Korean adults: the Fifth Korean National Health and Nutrition Examination Survey (KNHANES V, 2010–2012). Public Health Nutr 2016; 20:1836-1843. [DOI: 10.1017/s1368980016001713] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractObjectiveTo examine the hypothesis that the association between vitamin D deficiency and depressive symptoms is dependent upon total cholesterol level in a representative national sample of the South Korean population.DesignThis was a population-based cross-sectional study.SettingThe Fifth Korean National Health and Nutrition Examination Survey (KNHANES V, 2010–2012).SubjectsWe included 7198 adults aged 20–88 years.ResultsThe incidence of depressive symptoms in individuals with vitamin D deficiency (serum 25-hydroxyvitamin D<20 ng/ml) was 1·54-fold (95 % CI 1·20, 1·98) greater than in individuals without vitamin D deficiency (serum 25-hydroxyvitamin D ≥20 ng/ml). The relationship was stronger in individuals with normal-to-borderline serum total cholesterol (serum total cholesterol<240 mg/dl; OR=1·60; 95 % CI 1·23, 2·08) and non-significant in individuals with high serum total cholesterol (OR=0·97; 95 % CI 0·52, 1·81) after adjustment for confounding variables (age, sex, BMI, alcohol consumption, smoking status, regular exercise, income level, education level, marital status, changes in body weight, perceived body shape, season of examination date and cholesterol profiles).ConclusionsThe association between vitamin D deficiency and depressive symptoms was weakened by high serum total cholesterol status. These findings suggest that both vitamin D and total cholesterol are important targets for the prevention and treatment of depression.
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Al-Faris NA. High Prevalence of Vitamin D Deficiency among Pregnant Saudi Women. Nutrients 2016; 8:77. [PMID: 26861386 PMCID: PMC4772041 DOI: 10.3390/nu8020077] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 01/17/2016] [Accepted: 01/28/2016] [Indexed: 12/25/2022] Open
Abstract
Vitamin D deficiency has emerged as a public health problem worldwide due to its important role in health and disease. The present work is intended to examine prevalence of vitamin D deficiency among pregnant Saudi women and related risk factors. A cross-sectional study was carried out at King Fahad Medical City in Riyadh, Saudi Arabia. Serum 25-hydroxy vitamin D (25(OH)D) was measured by enzyme-linked immunosorbent assay in 160 pregnant women during the first trimester of pregnancy. Socio-demographic, lifestyle and maternal characteristics were collected and vitamin D intake was assessed using a 24-h dietary recall. Weight and height were measured using standardized methods. Vitamin D deficiency (25(OH)D < 50 nmol/L) and insufficiency (25(OH)D = 50–74 nmol/L) were reported in 50% and 43.8% of the study sample, respectively. Median serum 25(OH)D concentration was 49.9 nmol/L. Adequate vitamin D intake (≥600 IU/day) was reported among only 8.1% of pregnant women. Age group, educational level, sun exposure frequency and daytime and daily practice of exercise were significantly associated with vitamin D status. Overall, vitamin D deficiency was common among pregnant Saudi women in Riyadh. Steps should be taken to address the current situation, including increased sunlight exposure, consumption of fatty fish, and vitamin D supplements.
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Affiliation(s)
- Nora A Al-Faris
- Nutrition and Food Science Department, College of Home Economics, Princess Nourah Bint Abdulrahman University, P.O. Box 27938, Riyadh 11427, Saudi Arabia.
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Wallace IR, Wallace HJ, McKinley MC, Bell PM, Hunter SJ. Vitamin D and insulin resistance. Clin Endocrinol (Oxf) 2016; 84:159-171. [PMID: 25727561 DOI: 10.1111/cen.12760] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 11/06/2014] [Accepted: 02/26/2015] [Indexed: 12/28/2022]
Abstract
Vitamin D is a steroid hormone, which in active form binds to the vitamin D receptor. Expression of the vitamin D receptor in diverse cell types (pancreatic islet cells, myocytes, hepatocytes and adipocytes) raises the suspicion that vitamin D may be involved in multiple cellular processes, including the response to insulin. Insulin resistance is a characteristic feature of type 2 DM, and its attenuation may reduce the incidence of type 2 DM and cardiovascular disease. In observational studies, low serum 25-hydroxyvitamin D (25-OHD) concentrations are associated with an increased risk of type 2 DM. It has been suggested that increasing serum 25-OHD concentrations may have beneficial effects on glucose and insulin homeostasis. However, cross-sectional and interventional studies of vitamin D supplementation provide conflicting results and demonstrate no clear beneficial effect of vitamin D on insulin resistance. These studies are complicated by inclusion of different patient cohorts, different 25-OHD assays and different doses and preparations of vitamin D. Any possible association may be confounded by alterations in PTH, 1,25-dihydroxyvitamin D or tissue vitamin D concentrations. We identified 39 studies via MEDLINE and PUBMED. We review the evidence from 10 studies (seven observational and three interventional) examining vitamin D and type 2 DM incidence, and 29 studies (one prospective observational, 12 cross-sectional and 16 interventional trials) examining vitamin D and insulin resistance. Based on this data, it is not possible to state that vitamin D supplementation has any effect on type 2 DM incidence or on insulin resistance. Data from the multiple ongoing randomized controlled trials of vitamin D supplementation due to report over the next few years should help to clarify this area.
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Affiliation(s)
- Ian R Wallace
- Regional Centre for Endocrinology and Diabetes, Royal Victoria Hospital, Belfast, UK
- Nutrition and Metabolism Group, Centre for Public Health, Queen's University Belfast, Belfast, UK
| | - Helen J Wallace
- Regional Centre for Endocrinology and Diabetes, Royal Victoria Hospital, Belfast, UK
- Nutrition and Metabolism Group, Centre for Public Health, Queen's University Belfast, Belfast, UK
| | - Michelle C McKinley
- Nutrition and Metabolism Group, Centre for Public Health, Queen's University Belfast, Belfast, UK
| | - Patrick M Bell
- Regional Centre for Endocrinology and Diabetes, Royal Victoria Hospital, Belfast, UK
| | - Steven J Hunter
- Regional Centre for Endocrinology and Diabetes, Royal Victoria Hospital, Belfast, UK
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Bhat M, Noolu B, Qadri SSYH, Ismail A. Vitamin D deficiency decreases adiposity in rats and causes altered expression of uncoupling proteins and steroid receptor coactivator3. J Steroid Biochem Mol Biol 2014; 144 Pt B:304-12. [PMID: 25132457 DOI: 10.1016/j.jsbmb.2014.08.005] [Citation(s) in RCA: 20] [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: 05/19/2014] [Revised: 08/01/2014] [Accepted: 08/08/2014] [Indexed: 12/15/2022]
Abstract
The vitamin D endocrine system is functional in the adipose tissue, as demonstrated in vitro, in cultured adipocytes, and in vivo in mutant mice that developed altered lipid metabolism and fat storage in the absence of either 1,25-dihydroxyvitamin D3 [1,25(OH)2D3] or the vitamin D receptor. The aim of the present study was to examine the role of vitamin D and calcium on body adiposity in a diet-induced vitamin D deficient rat model. Vitamin D-deficient rats gained less weight and had lower amounts of visceral fat. Consistent with reduced adipose tissue mass, the vitamin D-deficient rats had low circulating levels of leptin, which reflects body fat stores. Expression of vitamin D and calcium sensing receptors, and that of genes involved in adipogenesis such as peroxisome proliferator-activated receptor, fatty acid synthase and leptin were significantly reduced in white adipose tissue of deficient rats compared to vitamin D-sufficient rats. Furthermore, the expression of uncoupling proteins (Ucp1 and Ucp2) was elevated in the white adipose tissue of the deficient rat indicative of higher energy expenditure, thereby leading to a lean phenotype. Expression of the p160 steroid receptor coactivator3 (SRC3), a key regulator of adipogenesis in white adipose tissue was decreased in vitamin D-deficient state. Interestingly, most of the changes observed in vitamin D deficient rats were corrected by calcium supplementation alone. Our data demonstrates that dietary vitamin D and calcium regulate adipose tissue function and metabolism.
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Affiliation(s)
| | - Bindu Noolu
- Department of Endocrinology and Metabolism, Hyderabad, India
| | - Syed S Y H Qadri
- Department of Pathology, National Institute of Nutrition, Hyderabad, India
| | - Ayesha Ismail
- Department of Endocrinology and Metabolism, Hyderabad, India.
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Wang WLW, Tenniswood M. Vitamin D, intermediary metabolism and prostate cancer tumor progression. Front Physiol 2014; 5:183. [PMID: 24860512 PMCID: PMC4030193 DOI: 10.3389/fphys.2014.00183] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 04/22/2014] [Indexed: 12/31/2022] Open
Abstract
Epidemiological data have demonstrated an inverse association between serum vitamin D3 levels, cancer incidence and related mortality. However, the effects of vitamin D on prostate cancer biology and its utility for prevention of prostate cancer progression are not as well-defined. The data are often conflicting: some reports suggest that vitamin D3 induces apoptosis in androgen dependent prostate cancer cell lines, while others suggest that vitamin D3 only induces cell cycle arrest. Recent molecular studies have identified an extensive synergistic crosstalk between the vitamin D- and androgen-mediated mRNA and miRNA expression, adding an additional layer of post-transcriptional regulation to the known VDR- and AR-regulated gene activation. The Warburg effect, the inefficient metabolic pathway that converts glucose to lactate for rapid energy generation, is a phenomenon common to many different types of cancer. This process supports cell proliferation and promotes cancer progression via alteration of glucose, glutamine and lipid metabolism. Prostate cancer is a notable exception to this general process since the metabolic switch that occurs early during malignancy is the reverse of the Warburg effect. This "anti-Warburg effect" is due to the unique biology of normal prostate cells that harbor a truncated TCA cycle that is required to produce and secret citrate. In prostate cancer cells, the TCA cycle activity is restored and citrate oxidation is used to produce energy for cancer cell proliferation. 1,25(OH)2D3 and androgen together modulates the TCA cycle via transcriptional regulation of zinc transporters, suggesting that 1,25(OH)2D3 and androgen maintain normal prostate metabolism by blocking citrate oxidation. These data demonstrate the importance of androgens in the anti-proliferative effect of vitamin D in prostate cancer and highlight the importance of understanding the crosstalk between these two signaling pathways.
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Affiliation(s)
- Wei-Lin W Wang
- Department of Biomedical Sciences, University at Albany, State University of New York Albany, NY, USA
| | - Martin Tenniswood
- Department of Biomedical Sciences, University at Albany, State University of New York Albany, NY, USA
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Alfawaz H, Tamim H, Alharbi S, Aljaser S, Tamimi W. Vitamin D status among patients visiting a tertiary care center in Riyadh, Saudi Arabia: a retrospective review of 3475 cases. BMC Public Health 2014; 14:159. [PMID: 24524260 PMCID: PMC3942273 DOI: 10.1186/1471-2458-14-159] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Accepted: 02/05/2014] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Vitamin D deficiency has been implicated in several chronic, non-communicable diseases independent of its conventional role in bone and calcium homeostasis. In this retrospective study, we determined the prevalence of vitamin D deficiency and its association to several cardiometabolic indices among patients visiting King Abdulaziz Medical City (KAMC), a tertiary hospital in Riyadh, Saudi Arabia. METHODS A total of 3475 charts of out-patient subjects who visited KAMC from September 2009 until December 2010 were reviewed and included. Variables of interest included measurements of vitamin D status, glycemic and renal profile, as well as trace elements (calcium and phosphorous). RESULTS The over-all prevalence of vitamin D deficiency in the cohort studied was 78.1% in females and 72.4% in males. 25(OH) vitamin D was significantly associated with increasing age and weight (p-values < 0.0001 and 0.005, respectively). It was also positively associated with albumin, calcium and phosphorous (p-values < 0.0001, < 0.0001 and 0.0007, respectively) and negatively associated with alkaline phosphatase as well as circulating levels of PTH (p-values 0.0002 and 0.0007, respectively). CONCLUSION In conclusion, vitamin D deficiency is overwhelmingly common among patients seen at KAMC regardless of the medical condition, and it is significantly associated with increasing age, weight and markers of calcium homeostasis. Findings of the present study further stress the spotlight on vitamin D deficiency epidemic in the country and region in general.
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Affiliation(s)
- Hanan Alfawaz
- Department of Food Science and Nutrition, College of Food Science and Agriculture King Saud University, P, O, Box 22452, Riyadh 11495, Saudi Arabia.
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Bouillon R, Carmeliet G, Lieben L, Watanabe M, Perino A, Auwerx J, Schoonjans K, Verstuyf A. Vitamin D and energy homeostasis: of mice and men. Nat Rev Endocrinol 2014; 10:79-87. [PMID: 24247221 DOI: 10.1038/nrendo.2013.226] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The vitamin D endocrine system has many extraskeletal targets, including adipose tissue. 1,25-Dihydroxyvitamin D₃, the active form of vitamin D, not only increases adipogenesis and the expression of typical adipocyte genes but also decreases the expression of uncoupling proteins. Mice with disrupted vitamin D action--owing to gene deletion of the nuclear receptor vitamin D receptor (Vdr) or the gene encoding 1α-hydroxylase (Cyp27b1)--lose fat mass over time owing to an increase in energy expenditure, whereas mice with increased Vdr-mediated signalling in adipose tissue become obese. The resistance to diet-induced obesity in mice with disrupted Vdr signalling is caused at least partially by increased expression of uncoupling proteins in white adipose tissue. However, the bile acid pool is also increased in these animals, and bile acids are known to be potent inducers of energy expenditure through activation of several nuclear receptors, including Vdr, and G-protein-coupled receptors, such as GPBAR1 (also known as TGR5). By contrast, in humans, obesity is strongly associated with poor vitamin D status. A causal link has not been firmly proven, but most intervention studies have failed to demonstrate a beneficial effect of vitamin D supplementation on body weight. The reasons for the major discrepancy between mouse and human data are unclear, but understanding the link between vitamin D status and energy homeostasis could potentially be very important for the human epidemic of obesity and the metabolic syndrome.
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Affiliation(s)
- Roger Bouillon
- Clinical and Experimental Endocrinology, KU Leuven, O&NI Herestraat 49 - bus 902, 3000 Leuven, Belgium
| | - Geert Carmeliet
- Clinical and Experimental Endocrinology, KU Leuven, O&NI Herestraat 49 - bus 902, 3000 Leuven, Belgium
| | - Liesbet Lieben
- Clinical and Experimental Endocrinology, KU Leuven, O&NI Herestraat 49 - bus 902, 3000 Leuven, Belgium
| | - Mitsuhiro Watanabe
- Health Science Laboratory, Graduate School of Media and Governance, Keio University, 5322 Endo Fujisawa-shi, 252-0882 Kanagawa, Japan
| | - Alessia Perino
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Station 15, AI 1149, CH-1015 Lausanne, Switzerland
| | - Johan Auwerx
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Station 15, AI 1149, CH-1015 Lausanne, Switzerland
| | - Kristina Schoonjans
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Station 15, AI 1149, CH-1015 Lausanne, Switzerland
| | - Annemieke Verstuyf
- Clinical and Experimental Endocrinology, KU Leuven, O&NI Herestraat 49 - bus 902, 3000 Leuven, Belgium
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de Paula FJA, Rosen CJ. Bone Remodeling and Energy Metabolism: New Perspectives. Bone Res 2013; 1:72-84. [PMID: 26273493 DOI: 10.4248/br201301005] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Accepted: 01/30/2013] [Indexed: 12/27/2022] Open
Abstract
Bone mineral, adipose tissue and energy metabolism are interconnected by a complex and multilevel series of networks. Calcium and phosphorus are utilized for insulin secretion and synthesis of high energy compounds. Adipose tissue store lipids and cholecalciferol, which, in turn, can influence calcium balance and energy expenditure. Hormones long-thought to solely modulate energy and mineral homeostasis may influence adipocytic function. Osteoblasts are a target of insulin action in bone. Moreover, endocrine mediators, such as osteocalcin, are synthesized in the skeleton but regulate carbohydrate disposal and insulin secretion. Finally, osteoblasts and adipocytes originate from the same mesenchymal progenitor. The mutual crosstalk between osteoblasts and adipocytes within the bone marrow microenvironment plays a crucial role in bone remodeling. In the present review we provide an overview of the reciprocal control between bone and energy metabolism and its clinical implications.
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Affiliation(s)
- Francisco J A de Paula
- Department of Internal Medicine, School of Medicine of Ribeirão Preto, University of São Paulo , Brazil
| | - Clifford J Rosen
- Center for Clinical and Translational Research, Maine Medical Center Research Institute , USA
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Trigueros L, Peña S, Ugidos AV, Sayas-Barberá E, Pérez-Álvarez JA, Sendra E. Food ingredients as anti-obesity agents: a review. Crit Rev Food Sci Nutr 2013; 53:929-42. [PMID: 23768185 DOI: 10.1080/10408398.2011.574215] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Overweight and obesity have a major impact on global health; their prevalence has rapidly increased in all industrialized countries in the past few decades and diabetes and hypertension are their direct consequences. Pharmacotherapy provides reinforcement for obesity treatment, but should be an adjunctive support to diet, exercise, and lifestyle modification. At present, only orlistat and sibutramine have been approved by the US Food and Drug Administration for long-term use, but sibutramine was withdrawn for sale by the European Medicines Agency. The development of functional foods for the prevention and/or treatment of obesity suppose an opportunity for the food market and involve the knowledge of the mechanisms of appetite and energy expenditure as well as the metabolic sensation of satiety. Strategies for weight control management affect gut hormones as potential targets for the appetite metabolic regulation, stimulation of energy expenditure (thermogenesis), and modifications in the metabolic activity of the gut microbiota. Functional foods for obesity may also include bioactive fatty acids, phenolic compounds, soybean, plant sterols, dietary calcium, and dietary fiber. This review intends to offer an overview of the present situation of the anti-obesity agents currently used in dietary therapy as well as some functional food ingredients with potentially anti-obesity effects.
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Affiliation(s)
- L Trigueros
- IPOA Research Group UMH-1 and REVIV_ Generalitat Valenciana, Departamento de Tecnología Agroalimentaria, Universidad Miguel Hernández, Ctra. de Beniel km 3.2, 03312, Orihuela, Alicante, Spain
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Morris KL, Zemel MB. 1, 25-Dihydroxyvitamin D3Modulation of Adipocyte Glucocorticoid Function. ACTA ACUST UNITED AC 2012; 13:670-7. [PMID: 15897475 DOI: 10.1038/oby.2005.75] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE 1,25-Dihydroxyvitamin D3 dose dependently increases intracellular calcium in human adipocytes. We have demonstrated that suppression of circulating 1,25-dihydroxyvitamin D3 levels by increasing dietary calcium reduces adipocyte intracellular calcium and reduces adiposity in both humans and rodents, with preferential loss of trunk fat. Autocrine production of cortisol by adipocytes of mice overexpressing 11beta-hydroxysteroid dehydrogenase type 1 (11beta-HSD 1) in adipose tissue increases visceral adiposity, whereas knockout of 11beta-HSD 1 appears to attenuate truncal obesity. Accordingly, our objective was to investigate the role of 1,25-dihydroxyvitamin D3 in the modulation of adipocyte glucocorticoid metabolism. RESEARCH METHODS AND PROCEDURES We examined the effect of 1,25-dihydroxyvitamin D3 or angiotensin II on cortisol production and expression using real-time reverse transcriptase-polymerase chain reaction of 11beta-HSD 1, angiotensin II receptor type 1 (AT1), and AT2 receptor in human adipocytes. RESULTS Adipocytes produced negligible cortisol in the absence of substrate (cortisone). In the presence of cortisone (1 to 10 nM), there was significant cortisol production, which was dose dependently augmented (2- to 6-fold, p < 0.001) by 1,25-dihydroxyvitamin D3 (0.1 to 10 nM). 1,25-Dihydroxyvitamin D3 dose dependently increased 11beta-HSD 1 expression up to 2-fold (p < 0.01) in both the presence and absence of cortisone. In contrast, 1,25-dihydroxyvitamin D3 dose dependently decreased adipocyte AT1 expression (by 30% to 50%, p < 0.001) in both the presence and absence of cortisone, suggesting compensatory down-regulation of AT(1). DISCUSSION We conclude that 1,25-dihydroxyvitamin D3 directly regulates adipocyte 11beta-HSD 1 expression and, consequently, local cortisol levels and that this may contribute to the preferential loss of visceral adiposity by high-calcium diets.
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Affiliation(s)
- Kristin L Morris
- Department of Nutrition, University of Tennessee, Room 229, Jessie Harris Building, 1215 West Cumberland Avenue, Knoxville, TN 37996, USA
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Zemel MB, Thompson W, Milstead A, Morris K, Campbell P. Calcium and Dairy Acceleration of Weight and Fat Loss during Energy Restriction in Obese Adults. ACTA ACUST UNITED AC 2012; 12:582-90. [PMID: 15090625 DOI: 10.1038/oby.2004.67] [Citation(s) in RCA: 419] [Impact Index Per Article: 34.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Increasing 1,25-dihydroxyvitamin D in response to low-calcium diets stimulates adipocyte Ca2+ influx and, as a consequence, stimulates lipogenesis, suppresses lipolysis, and increases lipid accumulation, whereas increasing dietary calcium inhibits these effects and markedly accelerates fat loss in mice subjected to caloric restriction. Our objective was to determine the effects of increasing dietary calcium in the face of caloric restriction in humans. RESEARCH METHODS AND PROCEDURES We performed a randomized, placebo-controlled trial in 32 obese adults. Patients were maintained for 24 weeks on balanced deficit diets (500 kcal/d deficit) and randomized to a standard diet (400 to 500 mg of dietary calcium/d supplemented with placebo), a high-calcium diet (standard diet supplemented with 800 mg of calcium/d), or high-dairy diet (1200 to 1300 mg of dietary calcium/d supplemented with placebo). RESULTS Patients assigned to the standard diet lost 6.4 +/- 2.5% of their body weight, which was increased by 26% (to 8.6 +/- 1.1%) on the high-calcium diet and 70% (to 10.9 +/- 1.6% of body weight) on the high-dairy diet (p < 0.01). Fat loss was similarly augmented by the high-calcium and high-dairy diets, by 38% and 64%, respectively (p < 0.01). Moreover, fat loss from the trunk region represented 19.0 +/- 7.9% of total fat loss on the low-calcium diet, and this fraction was increased to 50.1 +/- 6.4% and 66.2 +/- 3.0% on the high-calcium and high-dairy diets, respectively (p < 0.001). DISCUSSION Increasing dietary calcium significantly augmented weight and fat loss secondary to caloric restriction and increased the percentage of fat lost from the trunk region, whereas dairy products exerted a substantially greater effect.
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Affiliation(s)
- Michael B Zemel
- University of Tennessee, Knoxville, Tennessee 37996-1920, USA.
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Zemel MB, Richards J, Milstead A, Campbell P. Effects of Calcium and Dairy on Body Composition and Weight Loss in African-American Adults. ACTA ACUST UNITED AC 2012; 13:1218-25. [PMID: 16076991 DOI: 10.1038/oby.2005.144] [Citation(s) in RCA: 240] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVE Our objective was to determine the effects of dairy consumption on adiposity and body composition in obese African Americans. RESEARCH METHODS AND PROCEDURES We performed two randomized trials in obese African-American adults. In the first (weight maintenance), 34 subjects were maintained on a low calcium (500 mg/d)/low dairy (<1 serving/d) or high dairy (1200 mg Ca/d diet including 3 servings of dairy) diet with no change in energy or macronutrient intake for 24 weeks. In the second trial (weight loss), 29 subjects were similarly randomized to the low or high dairy diets and placed on a caloric restriction regimen (-500 kcal/d). RESULTS In the first trial, body weight remained stable for both groups throughout the maintenance study. The high dairy diet resulted in decreases in total body fat (2.16 kg, p < 0.01), trunk fat (1.03 kg, p < 0.01), insulin (18.7 pM, p < 0.04), and blood pressure (6.8 mm Hg systolic, p < 0.01; 4.25 mm Hg diastolic, p < 0.01) and an increase in lean mass (1.08 kg, p < 0.04), whereas there were no significant changes in the low dairy group. In the second trial, although both diets produced significant weight and fat loss, weight and fat loss on the high dairy diet were approximately 2-fold higher (p < 0.01), and loss of lean body mass was markedly reduced (p < 0.001) compared with the low dairy diet. DISCUSSION Substitution of calcium-rich foods in isocaloric diets reduced adiposity and improved metabolic profiles in obese African Americans without energy restriction or weight loss and augmented weight and fat loss secondary to energy restriction.
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Affiliation(s)
- Michael B Zemel
- Department of Nutrition, The University of Tennessee, 1215 W. Cumberland Avenue, Room 229, Knoxville, TN 37996-1920, USA.
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Makariou S, Liberopoulos E, Florentin M, Lagos K, Gazi I, Challa A, Elisaf M. The relationship of vitamin D with non-traditional risk factors for cardiovascular disease in subjects with metabolic syndrome. Arch Med Sci 2012; 8:437-43. [PMID: 22851997 PMCID: PMC3400909 DOI: 10.5114/aoms.2012.29398] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Revised: 04/15/2012] [Accepted: 05/11/2012] [Indexed: 01/21/2023] Open
Abstract
INTRODUCTION Several studies implicate an inverse relationship between 25-hydroxy vitamin D (25(OH)Vit D) serum levels and metabolic syndrome (MetS). We sought to investigate a possible relationship between 25(OH)Vit D and emerging risk factors associated with MetS, such as small dense low-density lipoprotein cholesterol (sdLDL-C) concentration, lipoprotein-associated phospholipase A(2) (Lp-PLA(2)) activity and high-sensitivity C-reactive protein (hsCRP) levels. MATERIAL AND METHODS We studied 110 consecutive otherwise healthy individuals. Of these, 52 were diagnosed with MetS and 58 who did not meet the MetS criteria served as controls. Low-density lipoprotein (LDL) subclass analysis was performed by polyacrylamide gel electrophoresis. Lp-PLA(2) activity was determined in total plasma by the trichloroacetic acid precipitation procedure. Serum 25(OH)Vit D was determined quantitatively by an enzyme immunoassay method. RESULTS Metabolic syndrome subjects had significantly lower 25(OH)Vit D levels (11.8 [0.6-48.3] ng/ml; 29.5 [1.5-120.75] nmol/l) compared with controls (17.2 [4.8-62.4] ng/ml; 43 [12-156] nmol/l, p = 0.027). Univariate regression analysis showed that 25(OH)Vit D concentration was inversely related to triglycerides (r= - 0.416, p = 0.003) and sdLDL-C (r= - 0.305, p = 0.004). There was no association of 25(OH)Vit D with waist circumference, blood pressure, high-density lipoprotein cholesterol (HDL-C), fasting glucose, Lp-PLA(2) and hsCRP. In multivariate regression analysis the relationship between 25(OH)Vit D and sdLDL-C became insignificant when triglycerides were included in the model. CONCLUSIONS Subjects with MetS exhibit lower 25(OH)Vit D serum levels compared with non-MetS individuals. Low 25(OH)Vit D is associated with higher sdLDL-C levels possibly through elevated triglycerides. No association between 25(OH)Vit D and Lp-PLA(2) or hsCRP was found.
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Affiliation(s)
- Stefania Makariou
- Department of Child Health, Medical School, University of Ioannina, Greece
- Department of Internal Medicine, Medical School, University of Ioannina, Greece
| | | | - Matilda Florentin
- Department of Internal Medicine, Medical School, University of Ioannina, Greece
| | - Konstantinos Lagos
- Department of Internal Medicine, Medical School, University of Ioannina, Greece
| | - Irene Gazi
- Department of Internal Medicine, Medical School, University of Ioannina, Greece
| | - Anna Challa
- Department of Child Health, Medical School, University of Ioannina, Greece
| | - Moses Elisaf
- Department of Internal Medicine, Medical School, University of Ioannina, Greece
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Soares MJ, Murhadi LL, Kurpad AV, Chan She Ping-Delfos WL, Piers LS. Mechanistic roles for calcium and vitamin D in the regulation of body weight. Obes Rev 2012; 13:592-605. [PMID: 22385576 DOI: 10.1111/j.1467-789x.2012.00986.x] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Low intakes of calcium and inadequate vitamin D status often cluster with higher prevalence rates of obesity. Consequently, there has been much interest in the mechanisms by which calcium and vitamin D could regulate body weight and adiposity. This review has focused on randomized controlled trials (RCTs) that have manipulated these nutrients and studied pathways of energy balance. Overall, there is consistent evidence that calcium and vitamin D increase whole body fat oxidation after single and multiple meals, and that calcium promotes a modest energy loss through increased faecal fat excretion. The evidence is equivocal for a greater diet-induced thermogenesis, increased lipolysis, suppression of key lipogenic enzymes, decreased hunger ratings or reduced energy/macronutrient intake. Emerging evidence suggests a potential improvement in insulin sensitivity following vitamin D that would impinge on food intake and substrate oxidation. However, the very few RCTs on supplemental vitamin D and energy balance have not explored postprandial avenues of the hormone's actions. Future efforts in this area need to define the threshold intake of these nutrients that would maximize metabolic and gastrointestinal outcomes. Such studies would provide a platform for endorsing the non-skeletal role of calcium and vitamin D in human pathophysiology.
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Affiliation(s)
- M J Soares
- Program of Nutrition, School of Public Health, Curtin Health Innovation Research Institute, Curtin University, Perth, Western Australia, Australia.
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Craig TA, Zhang Y, McNulty MS, Middha S, Ketha H, Singh RJ, Magis AT, Funk C, Price ND, Ekker SC, Kumar R. Research resource: whole transcriptome RNA sequencing detects multiple 1α,25-dihydroxyvitamin D(3)-sensitive metabolic pathways in developing zebrafish. Mol Endocrinol 2012; 26:1630-42. [PMID: 22734042 DOI: 10.1210/me.2012-1113] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The biological role of vitamin D receptors (VDR), which are abundantly expressed in developing zebrafish (Danio rerio) as early as 48 h after fertilization, and before the development of a mineralized skeleton and mature intestine and kidney, is unknown. We probed the role of VDR in developing zebrafish biology by examining changes in expression of RNA by whole transcriptome shotgun sequencing (RNA-seq) in fish treated with picomolar concentrations of the VDR ligand and hormonal form of vitamin D(3), 1α,25-dihydroxyvitamin D(3) [1α,25(OH)(2)D(3))].We observed significant changes in RNAs of transcription factors, leptin, peptide hormones, and RNAs encoding proteins of fatty acid, amino acid, xenobiotic metabolism, receptor-activator of NFκB ligand (RANKL), and calcitonin-like ligand receptor pathways. Early highly restricted, and subsequent massive changes in more than 10% of expressed cellular RNA were observed. At days post fertilization (dpf) 2 [24 h 1α,25(OH)(2)D(3)-treatment], only four RNAs were differentially expressed (hormone vs. vehicle). On dpf 4 (72 h treatment), 77 RNAs; on dpf 6 (120 h treatment) 1039 RNAs; and on dpf 7 (144 h treatment), 2407 RNAs were differentially expressed in response to 1α,25(OH)(2)D(3). Fewer RNAs (n = 481) were altered in dpf 7 larvae treated for 24 h with 1α,25(OH)(2)D(3) vs. those treated with hormone for 144 h. At dpf 7, in 1α,25(OH)(2)D(3)-treated larvae, pharyngeal cartilage was larger and mineralization was greater. Changes in expression of RNAs for transcription factors, peptide hormones, and RNAs encoding proteins integral to fatty acid, amino acid, leptin, calcitonin-like ligand receptor, RANKL, and xenobiotic metabolism pathways, demonstrate heretofore unrecognized mechanisms by which 1α,25(OH)(2)D(3) functions in vivo in developing eukaryotes.
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Affiliation(s)
- Theodore A Craig
- Nephrology and Hypertension Research, Medical Sciences, Mayo Clinic, Rochester, Minnesota 55905, USA
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Rosen CJ, Adams JS, Bikle DD, Black DM, Demay MB, Manson JE, Murad MH, Kovacs CS. The nonskeletal effects of vitamin D: an Endocrine Society scientific statement. Endocr Rev 2012; 33:456-92. [PMID: 22596255 PMCID: PMC3365859 DOI: 10.1210/er.2012-1000] [Citation(s) in RCA: 483] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2012] [Accepted: 04/18/2012] [Indexed: 12/18/2022]
Abstract
Significant controversy has emerged over the last decade concerning the effects of vitamin D on skeletal and nonskeletal tissues. The demonstration that the vitamin D receptor is expressed in virtually all cells of the body and the growing body of observational data supporting a relationship of serum 25-hydroxyvitamin D to chronic metabolic, cardiovascular, and neoplastic diseases have led to widespread utilization of vitamin D supplementation for the prevention and treatment of numerous disorders. In this paper, we review both the basic and clinical aspects of vitamin D in relation to nonskeletal organ systems. We begin by focusing on the molecular aspects of vitamin D, primarily by examining the structure and function of the vitamin D receptor. This is followed by a systematic review according to tissue type of the inherent biological plausibility, the strength of the observational data, and the levels of evidence that support or refute an association between vitamin D levels or supplementation and maternal/child health as well as various disease states. Although observational studies support a strong case for an association between vitamin D and musculoskeletal, cardiovascular, neoplastic, and metabolic disorders, there remains a paucity of large-scale and long-term randomized clinical trials. Thus, at this time, more studies are needed to definitively conclude that vitamin D can offer preventive and therapeutic benefits across a wide range of physiological states and chronic nonskeletal disorders.
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Mai XM, Chen Y, Camargo CA, Langhammer A. Cross-sectional and prospective cohort study of serum 25-hydroxyvitamin D level and obesity in adults: the HUNT study. Am J Epidemiol 2012; 175:1029-36. [PMID: 22312120 DOI: 10.1093/aje/kwr456] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Experimental studies suggest that vitamin D modulates the activity of adipocytes. The authors examined baseline serum 25-hydroxyvitamin D (25(OH)D) level in relation to prevalent and cumulative incident obesity in Norway. A cohort of 25,616 adults aged 19-55 years participated in both the second and third surveys of the Nord-Trøndelag Health Study (HUNT 2 (1995-1997) and HUNT 3 (2006-2008)). Serum 25(OH)D levels measured at baseline and anthropometric measurements taken at both baseline and follow-up were available for a random sample of 2,460 subjects. Overall, 40% of the 2,460 subjects had a serum 25(OH)D level less than 50.0 nmol/L, and 37% had a level of 50.0-74.9 nmol/L. The prevalence and cumulative incidence of obesity, defined as body mass index (weight (kg)/height (m)(2)) ≥30, were 12% and 15%, respectively. Lower serum 25(OH)D level was associated with a higher prevalence of obesity. In the 2,165 subjects with baseline BMI less than 30, a serum 25(OH)D level less than 50.0 nmol/L was associated with a significantly increased odds ratio for incident obesity during follow-up (adjusted odds ratio = 1.73, 95% confidence interval: 1.24, 2.41). When prevalent and incident obesity were classified according to waist circumference (≥88 cm for women, ≥102 cm for men), similar results were obtained. In addition to prevalent obesity, a serum 25(OH)D level less than 50.0 nmol/L was significantly associated with new-onset obesity in adults.
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Affiliation(s)
- Xiao-Mei Mai
- Department of Public Health and General Practice, Faculty of Medicine, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
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Choi H, Myung K. Vitamin D₃ regulation of body fat, cytokines, and calpain gene expression. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2012; 92:632-637. [PMID: 25520983 DOI: 10.1002/jsfa.4622] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND We conducted an in vivo experiment to determine whether vitamin D₃ acts as a fat synthesizer and/or meat tenderizer in mice. At 6 weeks of age, 20 male C57BL/6 wild-type mice were randomly divided into two groups (10 mice per group) and fed a modified AIN93G diet with (vitamin D₃ diet) or without (basal diet) 10 IU 25-OH-cholecalciferol kg⁻³ for 3 weeks. RESULTS When vitamin D₃ was fed to mice for 3 weeks, body fat was significantly increased compared to mice fed a basal diet. There was, however, no difference in body weight between the two groups. Vitamin D₃ increased the gene expressions of pro-inflammatory cytokines and peroxisome proliferator-activated receptor gamma, but decreased interleukin-15 in adipose tissue through nuclear vitamin D receptor and uncoupling protein-2 signals. The muscle inducible nitrate oxide synthase content of mice fed vitamin D₃ was higher than those fed a basal diet, while muscle arginase l showed a reverse phenomenon. longissimuss dorsi muscle of vitamin D₃-fed mice showed more severe fat deposition than those fed a basal diet. Vitamin D₃ amplified muscle u- and m-calpain protein content and suppressed muscle calpastatin protein content. CONCLUSION These findings suggest that vitamin D3 can be used as a fat synthesizer and meat tenderizer in meat-producing animals.
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Palacios C, Gil K, Pérez CM, Joshipura K. Determinants of vitamin D status among overweight and obese Puerto Rican adults. ANNALS OF NUTRITION AND METABOLISM 2012; 60:35-43. [PMID: 22222318 DOI: 10.1159/000335282] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Accepted: 11/19/2011] [Indexed: 01/09/2023]
Abstract
BACKGROUND/AIMS Low vitamin D status is highly prevalent worldwide, and the major determinants are sun exposure and vitamin D intake. We aimed to measure vitamin D status in a sample of overweight/obese adults in Puerto Rico, an area with plenty of sun exposure, and relate it to vitamin D intake, sun exposure and body composition. METHODS Serum 25(OH)D levels (liquid chromatography-tandem mass spectrometry), body weight and fat (bioimpedance), vitamin D intake and sun exposure (questionnaires) were assessed. Analysis included age-adjusted correlations and multivariate regression. RESULTS In 98 subjects (66% females; 40-65 years), median serum 25(OH)D levels were 30.7 ng/ml (25-75th percentile 25.0-37.3); 55% had levels >30 ng/ml, 31% had levels between 20 and 30 ng/ml and 14% had levels <20 ng/ml. Total vitamin D intake was 180 IU/day (45-615), and the sun exposure score was 22 (17-27). After adjusting for gender, 25(OH)D levels were significantly correlated with vitamin D intake (r = 0.24, p = 0.018), the sum of sun exposure and vitamin D intake indices (r = 0.34, p = 0.001) and percent body fat (r = -0.25, p = 0.01). After adjusting for age, gender and percent body fat, the sum of sun exposure and vitamin D intake indices remained statistically associated with 25(OH)D levels (β = 1.5, p < 0.01). CONCLUSIONS In this group of overweight and obese individuals, 25(OH)D was significantly related to vitamin D intake, sun exposure and vitamin D intake indices and percent body fat.
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Affiliation(s)
- Cristina Palacios
- Nutrition Program, Graduate School of Public Health, Medical Sciences Campus, University of Puerto Rico, San Juan, PR.
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45
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Metabolic effects of lactoferrin during energy restriction and weight regain in diet-induced obese mice. J Funct Foods 2012. [DOI: 10.1016/j.jff.2011.08.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Van Loan MD, Keim NL, Adams SH, Souza E, Woodhouse LR, Thomas A, Witbracht M, Gertz ER, Piccolo B, Bremer AA, Spurlock M. Dairy Foods in a Moderate Energy Restricted Diet Do Not Enhance Central Fat, Weight, and Intra-Abdominal Adipose Tissue Losses nor Reduce Adipocyte Size or Inflammatory Markers in Overweight and Obese Adults: A Controlled Feeding Study. J Obes 2011; 2011:989657. [PMID: 21941636 PMCID: PMC3173723 DOI: 10.1155/2011/989657] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 06/16/2011] [Accepted: 06/17/2011] [Indexed: 11/17/2022] Open
Abstract
Background. Research on dairy foods to enhance weight and fat loss when incorporated into a modest weight loss diet has had mixed results. Objective. A 15-week controlled feeding study to determine if dairy foods enhance central fat and weight loss when incorporated in a modest energy restricted diet of overweight and obese adults. Design. A 3-week run-in to establish energy needs; a 12-week 500 kcal/d energy reduction with 71 low-dairy-consuming overweight and obese adults randomly assigned to diets: ≤1 serving dairy/d (low dairy, LD) or ≤4 servings dairy/d (adequate dairy, AD). All foods were weighed and provided by the metabolic kitchen. Weight, fat, intra-abdominal adipose tissue (IAAT), subcutaneous adipose tissue (SAT) macrophage number, SAT inflammatory gene expression, and circulating cytokines were measured. Results. No diet differences were observed in weight, fat, or IAAT loss; nor SAT mRNA expression of inflammation, circulating cytokines, fasting lipids, glucose, or insulin. There was a significant increase (P = 0.02) in serum 25-hydroxyvitamin D in the AD group. Conclusion. Whether increased dairy intake during weight loss results in greater weight and fat loss for individuals with metabolic syndrome deserves investigation. Assessment of appetite, hunger, and satiety with followup on weight regain should be considered.
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Affiliation(s)
- Marta D. Van Loan
- Obesity & Metabolism Research Unit, Western Human Nutrition Research Center, USDA, ARS, 430 West Health Science Drive, Davis, CA 95616, USA
- Department of Nutrition, University of California, Davis, CA 95616, USA
| | - Nancy L. Keim
- Obesity & Metabolism Research Unit, Western Human Nutrition Research Center, USDA, ARS, 430 West Health Science Drive, Davis, CA 95616, USA
- Department of Nutrition, University of California, Davis, CA 95616, USA
| | - Sean H. Adams
- Obesity & Metabolism Research Unit, Western Human Nutrition Research Center, USDA, ARS, 430 West Health Science Drive, Davis, CA 95616, USA
- Department of Nutrition, University of California, Davis, CA 95616, USA
| | - Elaine Souza
- Department of Nutrition, University of California, Davis, CA 95616, USA
| | - Leslie R. Woodhouse
- Obesity & Metabolism Research Unit, Western Human Nutrition Research Center, USDA, ARS, 430 West Health Science Drive, Davis, CA 95616, USA
| | - Anthony Thomas
- Department of Nutrition, University of California, Davis, CA 95616, USA
| | - Megan Witbracht
- Department of Nutrition, University of California, Davis, CA 95616, USA
| | - Erik R. Gertz
- Obesity & Metabolism Research Unit, Western Human Nutrition Research Center, USDA, ARS, 430 West Health Science Drive, Davis, CA 95616, USA
| | - Brian Piccolo
- Department of Nutrition, University of California, Davis, CA 95616, USA
| | - Andrew A. Bremer
- Pediatric Division, Vanderbilt Children's Hospital, Nashville, TN 37232-9170, USA
| | - Michael Spurlock
- Department of Food Science and Human Nutrition, Iowa State University, Ames, IA 50011-1120, USA
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de Paula FJA, Dick-de-Paula I, Bornstein S, Rostama B, Le P, Lotinun S, Baron R, Rosen CJ. VDR haploinsufficiency impacts body composition and skeletal acquisition in a gender-specific manner. Calcif Tissue Int 2011; 89:179-91. [PMID: 21637996 PMCID: PMC3157554 DOI: 10.1007/s00223-011-9505-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Accepted: 05/07/2011] [Indexed: 10/18/2022]
Abstract
The vitamin D receptor (VDR) is crucial for virtually all of vitamin D's actions and is thought to be ubiquitously expressed. We hypothesized that disruption of one allele of the VDR gene would impact bone development and would have metabolic consequences. Body composition and bone mass (BMD) in VDR heterozygous (VDR HET) mice were compared to those obtained in male and female VDR KO and WT mice at 8 weeks of age. Male mice were also evaluated at 16 weeks, and bone marrow mesenchymal stem cell (MSC) differentiation was evaluated in VDR female mice. Additionally, female VDR HET and WT mice received intermittent PTH treatment or vehicle (VH) for 4 weeks. BMD was determined at baseline and after treatment. MRI was done in vivo at the end of treatment; μCT and bone histomorphometry were performed after killing the animals. VDR HET male mice had normal skeletal development until 16 weeks of age but showed significantly less gain in fat mass than WT mice. In contrast, female VDR HET mice showed decreased total-body BMD at age 8 weeks but had a normal skeletal response to PTH. MSC differentiation was also impaired in VDR HET female mice. Thus, female VDR HET mice show early impairment in bone acquisition, while male VDR HET mice exhibit a lean phenotype. Our results indicate that the VDR HET mouse is a useful model for studying the metabolic and skeletal impact of decreased vitamin D sensitivity.
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Affiliation(s)
- Francisco J. A. de Paula
- Maine Medical Center Research Institute, Research Drive 81, Scarborough, ME 04074-7205, USA; Department of Internal Medicine, School of Medicine of Ribeirão Preto, USP, Av. Bandeirantes 3900, Ribeirão Preto, SP 14049-900, Brazil
| | - Ingrid Dick-de-Paula
- Maine Medical Center Research Institute, Research Drive 81, Scarborough, ME 04074-7205, USA; Department of Internal Medicine, School of Medicine of Ribeirão Preto, USP, Av. Bandeirantes 3900, Ribeirão Preto, SP 14049-900, Brazil
| | - Sheila Bornstein
- Maine Medical Center Research Institute, Research Drive 81, Scarborough, ME 04074-7205, USA
| | - Bahman Rostama
- Maine Medical Center Research Institute, Research Drive 81, Scarborough, ME 04074-7205, USA
| | - Phuong Le
- Maine Medical Center Research Institute, Research Drive 81, Scarborough, ME 04074-7205, USA
| | - Sutada Lotinun
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Roland Baron
- Harvard Medical School and School of Dental Medicine, and Endocrine Unit, Massachusetts General Hospital, Boston, MA, USA
| | - Clifford J. Rosen
- Maine Medical Center Research Institute, Research Drive 81, Scarborough, ME 04074-7205, USA
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Caron-Jobin M, Morisset AS, Tremblay A, Huot C, Légaré D, Tchernof A. Elevated serum 25(OH)D concentrations, vitamin D, and calcium intakes are associated with reduced adipocyte size in women. Obesity (Silver Spring) 2011; 19:1335-41. [PMID: 21527900 DOI: 10.1038/oby.2011.90] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Recent studies have suggested a beneficial effect of vitamin D and calcium on adipocyte metabolism and the metabolic profile. Our objective was to examine associations of vitamin D intake, calcium and dairy products as well as serum 25(OH)D concentration with adiposity measures and adipocyte size in women. Omental and subcutaneous adipose tissue samples were obtained from 43 women undergoing gynecological surgeries. Adipocyte size was measured using adipocyte suspensions from collagenase-digested fat tissues. Total and visceral adiposity were assessed by dual-energy X-ray absorptiometry and computed tomography, respectively. Serum 25(OH)D was measured by radioimmmunoassay. Dietary intakes were assessed using a food frequency questionnaire. Women consuming two or more dairy product portions daily had smaller adipocytes in the omental depot compared to women consuming less than two portions daily (79 ± 12 vs. 94 ± 16 µm, P ≤ 0.01). Dietary intakes of calcium (r = -0.55) and vitamin D (r = -0.43) as well as serum 25(OH)D (r = -0.35) were also inversely and significantly associated with omental adipocyte size (P ≤ 0.05 for all). Dietary vitamin D intake was inversely associated with visceral adipose tissue area (r = -0.34, P ≤ 0.05). Serum 25(OH)D was also inversely associated with visceral adipose tissue area (r = -0.32) as well as with total adipose tissue area (r = -0.44), subcutaneous adipose tissue area (r = -0.36), BMI (r =-0.43) and total body fat mass (r = -0.41, P ≤ 0.05 for all). In conclusion, elevated dietary vitamin D intake and serum 25(OH)D values are related to lower visceral adiposity and omental adipocyte size in women.
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Affiliation(s)
- Maude Caron-Jobin
- Endocrinology and Genomics, Laval University Medical Research Center, Quebec City, Quebec, Canada
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Lorente-Cebrián S, Eriksson A, Dunlop T, Mejhert N, Dahlman I, Aström G, Sjölin E, Wåhlén K, Carlberg C, Laurencikiene J, Hedén P, Arner P, Rydén M. Differential effects of 1α,25-dihydroxycholecalciferol on MCP-1 and adiponectin production in human white adipocytes. Eur J Nutr 2011; 51:335-42. [PMID: 21701898 DOI: 10.1007/s00394-011-0218-z] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Accepted: 06/06/2011] [Indexed: 12/15/2022]
Abstract
BACKGROUND/AIM Obesity is characterized by a low-grade inflammation in white adipose tissue (WAT), which promotes insulin resistance. Low serum levels of 1α,25-dihydroxycholecalciferol (DHCC) associate with insulin resistance and higher body mass index although it is unclear whether vitamin D supplementation improves insulin sensitivity. We investigated the effects of DHCC on adipokine gene expression and secretion in adipocytes focusing on two key factors with pro-inflammatory [monocyte chemoattractant protein-1 (MCP-1/CCL2)] and anti-inflammatory [adiponectin (ADIPOQ)] effects. METHODS Pre-adipocytes were isolated from human subcutaneous WAT and cultured until full differentiation. Differentiated adipocytes were either pre-treated with DHCC (10(-7) M) and subsequently incubated with tumor necrosis factor-α (TNFα, 100 ng/mL) or concomitantly incubated with TNFα/DHCC. MCP1 and adiponectin mRNA expression was measured by RT-PCR and protein release by ELISA. RESULTS DHCC was not toxic and did not affect adipocyte morphology or the mRNA levels of adipocyte-specific genes. TNFα induced a significant increase in CCL2 mRNA and protein secretion, while DHCC alone reduced CCL2 mRNA expression (~25%, p < 0.05). DHCC attenuated TNFα-induced CCL2 mRNA expression in both pre-incubation (~15%, p < 0.05) and concomitant (~60%, p < 0.01) treatments. TNFα reduced ADIPOQ mRNA (~80%) and secretion (~35%). DHCC alone decreased adiponectin secretion to a similar degree (~35%, p < 0.05). Concomitant treatment with DHCC/TNFα for 48 h had an additive effect, resulting in a pronounced reduction in adiponectin secretion (~70%). CONCLUSIONS DHCC attenuates MCP-1 and adiponectin production in human adipocytes, thereby reducing the expression of both pro- and anti-inflammatory factors. These effects may explain the difficulties so far in determining the role of DHCC in insulin sensitivity and obesity in humans.
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Affiliation(s)
- Silvia Lorente-Cebrián
- Department of Medicine Huddinge, Lipid Laboratory, Karolinska Institutet, NVS, Karolinska University Hospital Huddinge, 141 86, Stockholm, Sweden.
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BINH TRANQUANG, NAKAHORI YUTAKA, HIEN VUTHITHU, KHAN NGUYENCONG, LAM NGUYENTHI, MAI LEBACH, YAMAMOTO SHIGERU. Correlations between genetic variance and adiposity measures, and gene × gene interactions for obesity in postmenopausal Vietnamese women. J Genet 2011. [DOI: 10.1007/s12041-011-0028-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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