1
|
Aljaibeji H, Heydarpour M, Stanton AM, Williams JS, Pojoga LH, Romero JR, Williams GH. Role of Raptor Gene Variants in Hypertension: Influence on Blood Pressure Independent of Salt Intake in White Population. Hypertension 2024; 81:1167-1177. [PMID: 38497230 PMCID: PMC11023780 DOI: 10.1161/hypertensionaha.123.22273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 01/29/2024] [Indexed: 03/19/2024]
Abstract
BACKGROUND The mTOR (mechanistic target of rapamycin) is an essential regulator of fundamental biological processes. mTOR forms 2 distinct complexes, mTORC1 (mTOR complex 1) when it binds with RAPTOR (Regulatory-associated Protein of mTOR) and mTORC2 (mTOR complex 2) when it associates with RICTOR (Rapamycin-insesitive companion of mTOR). Due to the previous link between the mTOR pathway, aldosterone, and blood pressure (BP), we anticipated that variants in the mTOR complex might be associated with salt-sensitive BP. METHODS BP and other parameters were assessed after a one-week liberal Na+ (200 mmol/d) and a one-week restricted Na+ (10 mmol/d) diet in 608 White subjects from the Hypertensive Pathotype cohort, single-nucleotide variants in MTOR, RPTOR, and RICTOR genes were obtained for candidate genes analyses. RESULTS The analysis revealed a significant association between a single nucleotide variants within the RPTOR gene and BP. Individuals carrying the RPTOR rs9901846 homozygous risk allele (AA) and heterozygous risk allele (GA) exhibited a 5 mm Hg increase in systolic BP on a liberal diet compared with nonrisk allele individuals (GG), but only in women. This single nucleotide variants effect was more pronounced on the restricted diet and present in both sexes, with AA carriers having a 9 mm Hg increase and GA carriers having a 5 mm Hg increase in systolic BP compared with GG. Interestingly, there were no significant associations between MTOR or RICTOR gene variants and BP. CONCLUSIONS The RPTOR gene variation is associated with elevated BP in White participants, regardless of salt intake, specifically in females.
Collapse
Affiliation(s)
- Hayat Aljaibeji
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital/Harvard Medical School, Boston, MA (H.A., M.H., A.M.S., J.S.W., L.H.P., J.R.R., G.H.W.)
| | - Mahyar Heydarpour
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital/Harvard Medical School, Boston, MA (H.A., M.H., A.M.S., J.S.W., L.H.P., J.R.R., G.H.W.)
| | - Ana Maria Stanton
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital/Harvard Medical School, Boston, MA (H.A., M.H., A.M.S., J.S.W., L.H.P., J.R.R., G.H.W.)
| | - Jonathan S Williams
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital/Harvard Medical School, Boston, MA (H.A., M.H., A.M.S., J.S.W., L.H.P., J.R.R., G.H.W.)
| | - Luminita H Pojoga
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital/Harvard Medical School, Boston, MA (H.A., M.H., A.M.S., J.S.W., L.H.P., J.R.R., G.H.W.)
| | - Jose R Romero
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital/Harvard Medical School, Boston, MA (H.A., M.H., A.M.S., J.S.W., L.H.P., J.R.R., G.H.W.)
| | - Gordon H Williams
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital/Harvard Medical School, Boston, MA (H.A., M.H., A.M.S., J.S.W., L.H.P., J.R.R., G.H.W.)
| |
Collapse
|
2
|
Heydarpour M, Parksook WW, Hopkins PN, Pojoga LH, Williams GH, Williams JS. A candidate locus in the renalase gene and susceptibility to blood pressure responses to the dietary salt. J Hypertens 2023; 41:723-732. [PMID: 36789764 PMCID: PMC10079562 DOI: 10.1097/hjh.0000000000003391] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 01/05/2023] [Accepted: 01/20/2023] [Indexed: 02/16/2023]
Abstract
BACKGROUND High dietary salt confers a risk of elevating blood pressure (BP) and the development of hypertension. BP to salt intake may be determined in part by individual genetic predisposition. Identifying these genetic underpinnings will enhance our understanding of the biological mechanisms of BP regulation. This study aims to assess the genetic association with salt sensitivity of BP (SSBP) within two well-phenotyped multinational cohorts. METHODS A total of 720 white participants from the HyperPATH consortium program were selected and genotyped using a multiethnic genotyping array. Individuals consumed two study diets containing high (>200 mEq/day) and low (<10 mEq/day) sodium content, after which SSBP, aldosterone, and plasma renin activity (PRA) were assessed in a controlled inpatient research setting. RESULTS A top signal (rs10887801; beta = 4.57, P = 5.03E - 07) at the renalase gene ( RNLS ) region was significantly associated with SSBP. We also identified seven single nucleotide variants with linkage disequilibrium to the top signal at this region that comprised a significant haplotype (TCTTAGTT, P = 0.00081). Homozygous carriers of the T-risk allele of the key single nucleotide variant had higher SSBP ( P ≤ 0.00001) and lower PRA ( P = 0.0076) compared with the nonrisk allele. CONCLUSION We identified significant associations between genetic variants of the RNLS gene and BP responses to dietary salt intervention and PRA that suggest susceptibility to volume-driven hypertension. These findings may contribute to a better understanding of the genetic mechanisms underlying BP regulation, support the role of RNLS in the pathogenesis of SSBP, and identify individuals who may be at risk from excess dietary salt intake.
Collapse
Affiliation(s)
- Mahyar Heydarpour
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Wasita W. Parksook
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Division of Endocrinology and Metabolism, and Division of General Internal Medicine, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Paul N. Hopkins
- Cardiovascular Genetics Research Unit, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Luminita H. Pojoga
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Gordon H. Williams
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jonathan S. Williams
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| |
Collapse
|
3
|
Rashidmayvan M, Sahebi R, Avan A, Sharifan P, Esmaily H, Afshari A, Nattagh-Eshtivani E, Najar Sedghdoust F, Aghasizadeh M, Ferns GA, Ghayour-Mobarhan M. Double blind control trial of vitamin D fortified milk on the expression of lncRNAs and adiponectin for patients with metabolic syndrome. Diabetol Metab Syndr 2023; 15:9. [PMID: 36653874 PMCID: PMC9847060 DOI: 10.1186/s13098-023-00979-1] [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: 10/11/2022] [Accepted: 01/05/2023] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Metabolic syndrome (Mets) is a common metabolic disorder in which hypoadiponectinemia is one of the consequences for the body caused by inflammation, and vitamin D may help improve inflammatory symptoms. LncRNAs (long non-coding RNA) play several different regulatory roles in the body. The goal of this study was to see how adding vitamin D to milk affected the levels of adiponectin and inflammatory lncRNAs in the serum of people with Mets. METHODS This clinical trial was conducted on staff and students between the ages of 30 and 50 at Mashhad University of Medical Sciences and met the International Diabetes Federation's criteria for Mets. Eighty-two Mets were assigned randomly to one of two groups for ten weeks: fortified milk (FM) with 1500 IU vitamin D or non-fortified milk (NFM). Total RNA was extracted from both frozen clinical samples using Trizol reagent. APQ AS and MALAT1 lncRNA gene expression were measured by Real-Time PCR. RESULTS Serum adiponectin levels in the FM group increased significantly compared to the NFM group (p = 0.01). Also, the expression of APQ AS and MALAT1 genes decreased after ten weeks, which showed a significant decrease in APQ AS (p = 0.036). CONCLUSION As in FM, vitamin D may have anti-inflammatory effects and increase adiponectin levels in people with Mets via decreasing APQ AS gene expression.
Collapse
Affiliation(s)
- Mohammad Rashidmayvan
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reza Sahebi
- Metabolic Syndrome Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir Avan
- Metabolic Syndrome Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Payam Sharifan
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Habibollah Esmaily
- Department of Biostatistics, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Asma Afshari
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Elyas Nattagh-Eshtivani
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Najar Sedghdoust
- Iranian UNESCO Center of Excellence for Human Nutrition, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Malihe Aghasizadeh
- Iranian UNESCO Center of Excellence for Human Nutrition, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gordon A Ferns
- Division of Medical Education, Brighton & Sussex Medical School, Falmer, Brighton, Sussex, UK
| | - Majid Ghayour-Mobarhan
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
- Iranian UNESCO Center of Excellence for Human Nutrition, Mashhad University of Medical Sciences, Mashhad, Iran.
| |
Collapse
|
4
|
Parksook WW, Heydarpour M, Gholami SK, Luther JM, Hopkins PN, Pojoga LH, Williams JS. Salt Sensitivity of Blood Pressure and Aldosterone: Interaction Between the Lysine-specific Demethylase 1 Gene, Sex, and Age. J Clin Endocrinol Metab 2022; 107:1294-1302. [PMID: 35022775 PMCID: PMC9016472 DOI: 10.1210/clinem/dgac011] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Indexed: 01/13/2023]
Abstract
CONTEXT Salt sensitivity of blood pressure (SSBP) is associated with increased cardiovascular risk, especially in individuals of African descent, although the underlying mechanisms remain obscure. Lysine-specific demethylase 1 (LSD1) is a salt-sensitive epigenetic regulator associated with SSBP and aldosterone dysfunction. An LSD1 risk allele in humans is associated with SSBP and lower aldosterone levels in hypertensive individuals of African but not European descent. Heterozygous knockout LSD1 mice display SSBP and aldosterone dysregulation, but this effect is modified by age and biological sex. This might explain differences in cardiovascular risk with aging and biological sex in humans. OBJECTIVE This work aims to determine if LSD1 risk allele (rs587618) carriers of African descent display a sex-by-age interaction with SSBP and aldosterone regulation. METHODS We analyzed 297 individuals of African and European descent from the HyperPATH cohort. We performed multiple regression analyses for outcome variables related to SSBP and aldosterone. RESULTS LSD1 risk allele carriers of African (but not European) descent had greater SSBP than nonrisk homozygotes. Female LSD1 risk allele carriers of African descent had greater SSBP, mainly relationship-driven by women with low estrogen (postmenopausal). There was a statistically significant LSD1 genotype-sex interaction in aldosterone response to angiotensin II stimulation in individuals aged 50 years or younger, with female carriers displaying decreased aldosterone responsiveness. CONCLUSION SSBP associated with LSD1 risk allele status is driven by women with a depleted estrogen state. Mechanisms related to a resistance to develop SSBP in females are uncertain but may relate to an estrogen-modulating effect on mineralocorticoid receptor (MR) activation and/or LSD1 epigenetic regulation of the MR.
Collapse
Affiliation(s)
- Wasita W Parksook
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
- Department of Medicine (Division of Endocrinology and Metabolism, and Division of General Internal Medicine), Faculty of Medicine, Chulalongkorn University, and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok 10330, Thailand
| | - Mahyar Heydarpour
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Shadi K Gholami
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - James M Luther
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Vanderbilt Hypertension Center, Nashville, Tennessee 37232, USA
| | - Paul N Hopkins
- Cardiovascular Genetics Research Unit, University of Utah School of Medicine, Salt Lake City, Utah 84132, USA
| | - Luminita H Pojoga
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Jonathan S Williams
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| |
Collapse
|
5
|
Hosseinzadeh M, Razmpoosh E, Elham shareghfarid, Hosseinzadeh E, Hadinedoushan H, Salami MA, Khosravi M, Amini M, Mozaffari-Khosravi H. The effect of a single mega dose injection of vitamin D on serum adiponectin concentration at first gestational diabetes mellitus: A randomized controlled clinical trial. CLINICAL NUTRITION EXPERIMENTAL 2020. [DOI: 10.1016/j.yclnex.2020.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
6
|
Bassatne A, Jafari A, Kassem M, Mantzoros C, Rahme M, El-Hajj Fuleihan G. Delta-like 1 (DLK1) is a possible mediator of vitamin D effects on bone and energy metabolism. Bone 2020; 138:115510. [PMID: 32622071 PMCID: PMC11133180 DOI: 10.1016/j.bone.2020.115510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 06/11/2020] [Accepted: 06/25/2020] [Indexed: 10/24/2022]
Abstract
Vitamin D effects on bone and mineral metabolism are well recognized, and its anti-inflammatory actions are gaining particular interest. Delta-like 1 (DLK1) is a protein, expressed by progenitor cells of different tissues, and increases the size of progenitor cell population during the inflammatory phase of tissue regeneration. DLK1 also plays a role in energy metabolism as it antagonizes insulin signaling in bone. In this one-year randomized clinical trial of overweight elderly individuals that received either 600 or 3750 IU daily cholecalciferol we assessed the effect of vitamin D supplementation on pre-specified secondary outcomes: DLK1, leptin, adiponectin, C-Reactive Protein (CRP) and Vascular Cell Adhesion Molecule (VCAM). We also examined correlations between DLK1 and bone (BMD, bone markers), fat (adipokines, body composition), insulin sensitivity and inflammatory markers. Multivariate analyses were conducted to further explore these associations. Overall, there was a significant increase in serum DLK1 and leptin and a decrease in VCAM, but no change in CRP, after 12 months of vitamin D supplementation. DLK1 was negatively correlated with BMD and positively correlated with bone markers, associations that persisted after adjusting for age, gender and BMI. DLK1 was also positively associated with indices of insulin resistance and negatively with indices of insulin sensitivity. Correlations between DLK1 and fat parameters, such as adipokines, and DXA derived fat mass were less consistent. There were no correlations between DLK1 and inflammatory markers. In conclusion, twelve months supplementation of vitamin D3 increased serum DLK1. DLK1 was negatively associated with indices of bone health and fuel metabolism, and with 1,25(OH)2D levels. Similar to the role of DLK1 in animal models, our findings support the hypothesis that DLK1 can be targeted to regulate bone and energy metabolism and develop drugs to improve BMD and insulin sensitivity. However, further studies are needed to explore the role of DLK1 and its relationship to vitamin D metabolites in vivo.
Collapse
Affiliation(s)
- Aya Bassatne
- Calcium Metabolism and Osteoporosis Program, Division of Endocrinology and Metabolism, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Abbas Jafari
- Molecular Endocrinology and Stem Cell Research Unit (KMEB), Department of Endocrinology and Metabolism, Odense University Hospital and Department of Clinical Research, University of Southern Denmark, Odense, Denmark; Department of Cellular and Molecular Medicine, Novo Nordisk Foundation Center for Stem Cell Biology (DanStem), University of Copenhagen, Copenhagen, Denmark
| | - Moustapha Kassem
- Molecular Endocrinology and Stem Cell Research Unit (KMEB), Department of Endocrinology and Metabolism, Odense University Hospital and Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Christos Mantzoros
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Maya Rahme
- Calcium Metabolism and Osteoporosis Program, Division of Endocrinology and Metabolism, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Ghada El-Hajj Fuleihan
- Calcium Metabolism and Osteoporosis Program, Division of Endocrinology and Metabolism, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon.
| |
Collapse
|
7
|
Haas AV, Baudrand R, Easly RM, Murray GR, Touyz RM, Pojoga LH, Jeunemaitre X, Hopkins PN, Rosner B, Williams JS, Williams GH, Adler GK. Interplay Between Statins, Cav1 (Caveolin-1), and Aldosterone. Hypertension 2020; 76:962-967. [PMID: 32755411 PMCID: PMC7418929 DOI: 10.1161/hypertensionaha.120.14777] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Statin use is associated with lower aldosterone levels. We hypothesized that caveolin-1 may be important for the uptake of statins into the adrenal gland and would affect statin’s aldosterone-lowering effects. The aim of this study was to test whether the caveolin-1 risk allele (rs926198) would affect aldosterone levels associated with statin use. The Hypertensive Pathotype database includes healthy and hypertensive individuals who have undergone assessment of adrenal hormones. Individuals were studied off antihypertensive medications but were maintained on statins if prescribed by their personal physician. Adrenal hormones were measured at baseline and after 1 hour of angiotensin II stimulation on both high- and low-sodium diets. A mixed-model repeated-measures analysis was employed with a priori selected covariates of age, sex, body mass index, and protocol (low versus high sodium, baseline versus angiotensin II stimulated aldosterone). A total of 250 individuals were included in the study; 31 individuals were taking statins (12.4%) and 219 were not. Among statin users, carrying a caveolin-1 risk allele resulted in a 25% (95% CI, 1–43.2) lower aldosterone level (P=0.04). However, among nonstatin users, carrying a caveolin-1 risk allele resulted in no significant effect on aldosterone levels (P=0.38). Additionally, the interaction between caveolin-1 risk allele and statin use on aldosterone levels was significant (P=0.03). These findings suggest caveolin-1 risk allele carrying individuals are likely to receive the most benefit from statin’s aldosterone-lowering properties; however, due to the observational nature of this study, these findings need further investigation.
Collapse
Affiliation(s)
- Andrea V Haas
- From the Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital (A.V.H., R.M.E., G.RM., L.H.P., J.S.W., G.H.W., G.K.A.), Harvard Medical School, Boston, MA
| | - Rene Baudrand
- Program for Adrenal Disorders and Endocrine Hypertension, Department of Endocrinology, CETREN, School of Medicine, Pontificia Universidad Catolica De Chile, Santiago, Chile (R.B.)
| | - Rebecca M Easly
- From the Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital (A.V.H., R.M.E., G.RM., L.H.P., J.S.W., G.H.W., G.K.A.), Harvard Medical School, Boston, MA
| | - Gillian R Murray
- From the Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital (A.V.H., R.M.E., G.RM., L.H.P., J.S.W., G.H.W., G.K.A.), Harvard Medical School, Boston, MA
| | - Rhian M Touyz
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, United Kingdom (R.M.T.)
| | - Luminita H Pojoga
- From the Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital (A.V.H., R.M.E., G.RM., L.H.P., J.S.W., G.H.W., G.K.A.), Harvard Medical School, Boston, MA
| | - Xavier Jeunemaitre
- University of Paris, Faculty of Health; INSERM, UMRS-970, F-75015 France (X.J.).,APHP, Department of Genetics, Hôpital Européen Georges Pompidou, F-75015 Paris, France (X.J.)
| | - Paul N Hopkins
- Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City (P.N.H.)
| | - Bernard Rosner
- Division of Network Medicine, Department of Medicine, Channing (B.R.), Harvard Medical School, Boston, MA
| | - Jonathan S Williams
- From the Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital (A.V.H., R.M.E., G.RM., L.H.P., J.S.W., G.H.W., G.K.A.), Harvard Medical School, Boston, MA
| | - Gordon H Williams
- From the Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital (A.V.H., R.M.E., G.RM., L.H.P., J.S.W., G.H.W., G.K.A.), Harvard Medical School, Boston, MA
| | - Gail K Adler
- From the Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital (A.V.H., R.M.E., G.RM., L.H.P., J.S.W., G.H.W., G.K.A.), Harvard Medical School, Boston, MA
| |
Collapse
|
8
|
Sundari LPR, Bakta M, Astawa NM, Adiatmika PG, Arijana GKN, Tunas K. The Effect of Vitamin D Administration on Leptin, Adiponectin and mRNA MCP-1 Levels in Adipose Tissue of Obese Female Wistar Rats. ACTA ACUST UNITED AC 2020. [DOI: 10.12944/crnfsj.8.2.20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In obesity, there is an accumulation of adipocytes which produces adipokine that are pro-inflammatory substance, such as leptin and MCP-1 and anti-inflammatory substance, such as adiponectin, while the bioavailability of vitamin D is decreased. This research aimed to study the effect of vitamin D administration on leptin, MCP-1, and adiponectin levels in adipose tissue rats with obesity. Vitamin D was administered to the obese model of 6-9 months old female Wistar rats. This experiment was a randomized control group design with a post-test group design only. Twenty-seven (27) female obese Wistar rats were included in this study. The animals were divided randomly into 3 groups: 9 rats were given 2400 IU vitamin D (group A), 9 rats were given 800 IU vitamin D (group B) and 9 rats were given a placebo as control (group C). The administration of Vitamin D was given once daily for 8 weeks. The visceral adipose tissue was taken to measure the level of leptin, adiponectin and mRNA MCP-1. Data among groups was analyzed by using one-way ANOVA and followed by LSD test, at a significance level of p <0.05. The lowest level of leptin (1059.15+135.20 pg/ml) and mRNA MCP-1 (2.36 + 0.75 fg/ml) and the highest adiponectin level (3.43 + 0.47 ng/ml) were found in group A. In conclusion, oral administration of vitamin D (2400 IU) decreased pro-inflammatory substances, such as leptin and mRNA MCP-1 and increased anti-inflammatory substances, such as adiponectin, in visceral adipose tissue of obese female Wistar rats.
Collapse
Affiliation(s)
| | - Made Bakta
- Internal Medicine Department, Faculty of Medicine-Sanglah Hospital, Udayana University, Bali, Indonesia
| | - Nyoman Mantik Astawa
- Immunology Laboratory, Faculty of Veterinary, Udayana University, Bali Indonesia
| | - Putu Gede Adiatmika
- Physiology Department, Faculty of Medicine, Udayana University, Bali, Indonesia
| | | | - Ketut Tunas
- Department of Public Health, Faculty of Health, Science and Technology, Dhyana Pura University, Bali, Indonesia
| |
Collapse
|
9
|
Rafiq R, El Haddaoui H, de Mutsert R, Rosendaal FR, Hiemstra PS, Cobbaert CM, den Heijer M, de Jongh RT. Adiposity is a confounding factor which largely explains the association of serum vitamin D concentrations with C-reactive protein, leptin and adiponectin. Cytokine 2020; 131:155104. [PMID: 32325367 DOI: 10.1016/j.cyto.2020.155104] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 03/18/2020] [Accepted: 04/13/2020] [Indexed: 01/21/2023]
Abstract
OBJECTIVE The role of adiposity in the relationship between vitamin D and inflammation is unknown. Our aim was therefore to assess the association of serum 25-hydroxyvitamin D (25(OH)D) with C-reactive protein (CRP), leptin and adiponectin and the role of adiposity in this relationship. METHODS This is a cross-sectional analysis of The Netherlands Epidemiology of Obesity Study (NEO), a population-based cohort study in men and women aged 45 to 65 years. Main outcome measures were CRP, leptin and adiponectin. In the linear regression analyses we adjusted for age, sex, ethnicity, creatinine, education, alcohol use, smoking status, physical activity, number of chronic diseases, season, total body fat and waist circumference. RESULTS Of the 6287 participants, 21% were vitamin D deficient (serum 25(OH)D < 50 nmol/L). Mean (SD) age and BMI were 56 (6) years and 26.3 (4.4) kg/m2, respectively. Although after adjustment for most examined potential confounders, each 10 nmol/L increase in serum 25(OH)D was associated with 2.3% (95%CI: -4.0 to -0.5) lower CRP, 3.5% (-4.7 to -2.2) lower leptin, and 0.13 ng/mL (0.04-0.21) higher adiponectin, most of these associations seemed to largely stem from an additional potential confounder - adiposity - as they either disappeared (leptin and CRP) or were largely diminished (adiponectin) upon further adjustment for adiposity indices (total body fat and waist circumference). CONCLUSION We found that measures of adiposity largely explained the negative association of serum 25(OH)D with the pro-inflammatory CRP and leptin, and the positive association with the anti-inflammatory adiponectin. These results suggest that future studies should take the effect of adiposity into account.
Collapse
Affiliation(s)
- Rachida Rafiq
- Department of Internal Medicine and Endocrinology, VU University Medical Center, Amsterdam Movement Sciences, Amsterdam, the Netherlands.
| | - Hassana El Haddaoui
- Department of Internal Medicine and Endocrinology, VU University Medical Center, Amsterdam Movement Sciences, Amsterdam, the Netherlands
| | - Renée de Mutsert
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Frits R Rosendaal
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Pieter S Hiemstra
- Department of Pulmonology, Leiden University Medical Center, Leiden, the Netherlands
| | - Christa M Cobbaert
- Department of Clinical Chemistry, Leiden University Medical Center, Leiden, the Netherlands
| | - Martin den Heijer
- Department of Internal Medicine and Endocrinology, VU University Medical Center, Amsterdam Movement Sciences, Amsterdam, the Netherlands; Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Renate T de Jongh
- Department of Internal Medicine and Endocrinology, VU University Medical Center, Amsterdam Movement Sciences, Amsterdam, the Netherlands
| |
Collapse
|
10
|
Ranjit S, Wong JY, Tan JW, Sin Tay C, Lee JM, Yin Han Wong K, Pojoga LH, Brooks DL, Garza AE, Maris SA, Katayama IA, Williams JS, Rivera A, Adler GK, Williams GH, Romero JR. Sex-specific differences in endoplasmic reticulum aminopeptidase 1 modulation influence blood pressure and renin-angiotensin system responses. JCI Insight 2019; 4:129615. [PMID: 31672933 DOI: 10.1172/jci.insight.129615] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 09/19/2019] [Indexed: 12/24/2022] Open
Abstract
Salt sensitivity of blood pressure (SSBP) and hypertension are common, but the underlying mechanisms remain unclear. Endoplasmic reticulum aminopeptidase 1 (ERAP1) degrades angiotensin II (ANGII). We hypothesized that decreasing ERAP1 increases BP via ANGII-mediated effects on aldosterone (ALDO) production and/or renovascular function. Compared with WT littermate mice, ERAP1-deficient (ERAP1+/-) mice had increased tissue ANGII, systolic and diastolic BP, and SSBP, indicating that ERAP1 deficiency leads to volume expansion. However, the mechanisms underlying the volume expansion differed according to sex. Male ERAP1+/- mice had increased ALDO levels and normal renovascular responses to volume expansion (decreased resistive and pulsatility indices and increased glomerular volume). In contrast, female ERAP1+/- mice had normal ALDO levels but lacked normal renovascular responses. In humans, ERAP1 rs30187, a loss-of-function gene variant that reduces ANGII degradation in vitro, is associated with hypertension. In our cohort from the Hypertensive Pathotype (HyperPATH) Consortium, there was a significant dose-response association between rs30187 risk alleles and systolic and diastolic BP as well as renal plasma flow in men, but not in women. Thus, lowering ERAP1 led to volume expansion and increased BP. In males, the volume expansion was due to elevated ALDO with normal renovascular function, whereas in females the volume expansion was due to impaired renovascular function with normal ALDO levels.
Collapse
|
11
|
Haas AV, Hopkins PN, Brown NJ, Pojoga LH, Williams JS, Adler GK, Williams GH. Higher urinary cortisol levels associate with increased cardiovascular risk. Endocr Connect 2019; 8:634-640. [PMID: 31018177 PMCID: PMC6528405 DOI: 10.1530/ec-19-0182] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 04/23/2019] [Indexed: 12/31/2022]
Abstract
There are conflicting data on whether variations of physiologic cortisol levels associated with cardiovascular risk. We hypothesize that prior discordant findings are related to problems associated with varying sample size, techniques for assessing cardiovascular risk and failure to adequately account for environmental factors. To address these issues, we utilized a large sample size, selected the Framingham risk score to compute cardiovascular risk and performed the study in a highly controlled setting. We had two main objectives: determine whether higher, yet physiologic, cortisol levels associated with increased cardiovascular risk and determine whether caveolin-1 (rs926198) risk allele carriers associated with increased cardiovascular risk. This was a cross-sectional study of 574 non-diabetic individuals who completed a common protocol. Data collection included fasting blood samples, blood pressure measurements and a 24-h urine-free cortisol collection. Five hundred seventeen of these participants also completed caveolin-1 genotyping. Subjects were classified as belonging to either the low-mode or high-mode urine-free cortisol groups, based on the bimodal distribution of urine-free cortisol. In multivariate analysis, Framingham risk score was statistically higher in the high-mode cortisol group (10.22 (mean) ± 0.43 (s.e.m.)) compared to the low-mode cortisol group (7.73 ± 0.34), P < 0.001. Framingham risk score was also statistically higher in the caveolin-1 risk allele carriers (8.91 ± 0.37) compared to caveolin-1 non-risk allele carriers (7.59 ± 0.48), P = 0.034. Overall, the estimated effect on Framingham risk score of carrying the caveolin-1 risk allele was 1.33 ± 0.61, P = 0.029. Both urinary cortisol and caveolin-1 risk allele status are independent predictors of Framingham risk score.
Collapse
Affiliation(s)
- Andrea V Haas
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Correspondence should be addressed to A V Haas:
| | - Paul N Hopkins
- Cardiovascular Genetics, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Nancy J Brown
- Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Luminita H Pojoga
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jonathan S Williams
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Gail K Adler
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Gordon H Williams
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| |
Collapse
|
12
|
Daneshzad E, Farsad-Naeimi A, Heshmati J, Mirzaei K, Maghbooli Z, Keshavarz SA. The association between dietary antioxidants and adipokines level among obese women. Diabetes Metab Syndr 2019; 13:1369-1373. [PMID: 31336494 DOI: 10.1016/j.dsx.2019.02.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 02/12/2019] [Indexed: 11/20/2022]
Abstract
AIM Adipokines are associated with several oxidative stress-related diseases and pathologic conditions. We aimed to assess the association between antioxidants and adipokines in obese adults. METHODS AND MATERIALS In this cross-sectional study, a total of 160 obese women were included. Body composition and anthropometric characteristics were measured. Dietary intakes were assessed by 3-day, 24-h dietary recall. Blood samples were obtained following an overnight fasting. Serum concentrations of adipokines including progranulin, retinol binding protein 4 (RBP4) and Angiopoietin-related growth factor 6 (ANGPTL6) was measured using an enzyme-linked immunosorbent assay. ANCOVA and the linear regression model analysis was performed to assess the relationship between Progranulin, RBP4, AnGPTL6, and antioxidants. RESULTS Mean age of included women was 39.31 ± 12.10. Mean and standard deviation for BMI was 35.05 ± 4.26 in this obese population. There was a positive significant association between ANGPTL6 and vitamin D intake (p < 0.001). Also, there was a marginal association between RBP4 and vitamin A (p = 0.063) intake, but after adjustment age, and fat mass, we found a significant association (p = 0.008). However, the associations between dietary antioxidants, progranulin, and ANGPTL6 were not statistically significant. CONCLUSIONS ANGPTL6 and RBP4 levels directly associated with dietary vitamins D and A intake, respectively. But, according to the results, the association between ANGPTL6 and vitamin D was bidirectional. The suggested associations probably can be useful in the development of interventional studies for management of chronic diseases.
Collapse
Affiliation(s)
- Elnaz Daneshzad
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, 14155-6117, Iran
| | - Alireza Farsad-Naeimi
- Department of Nutrition, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Javad Heshmati
- Department of Nutritional Science, School of Nutritional Science and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Khadijeh Mirzaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, 14155-6117, Iran.
| | - Zhila Maghbooli
- Osteoporosis Research Center, Endocrine Diseases and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed-Ali Keshavarz
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| |
Collapse
|
13
|
Is the association between vitamin D, adiponectin, and insulin resistance present in normal weight or obese? A pilot study. CLINICAL NUTRITION EXPERIMENTAL 2019. [DOI: 10.1016/j.yclnex.2018.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
14
|
Filgueiras MS, Rocha NP, Novaes JF, Bressan J. Vitamin D status, oxidative stress, and inflammation in children and adolescents: A systematic review. Crit Rev Food Sci Nutr 2018; 60:660-669. [PMID: 30596263 DOI: 10.1080/10408398.2018.1546671] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Vitamin D deficiency is considered a global public health problem with high prevalence in children and adolescents. The majority of the studies in the literature have identified a relationship between vitamin D insufficiency/deficiency and obesity, as well as other traditional cardiometabolic risk factors in children and adolescents. Scarce studies address vitamin D status with oxidative stress and inflammation in the young population. The aim of this systematic review was to evaluate the evidence of the association of vitamin D status with oxidative stress and inflammation in children and adolescents. This is a systematic review based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyzes (PRISMA) guideline on reporting systematic reviews. Eight studies were selected for this review. All included studies evaluated inflammatory biomarkers and two out of eight evaluated biomarkers of oxidative stress. The majority of the studies (five out of eight) found association of vitamin D status with biomarkers of oxidative stress and inflammation such as C-reactive protein (CRP), interleukin-6 (IL-6), cathepsin S, vascular cell adhesion molecule-1 (VCAM-1), malondialdehyde (MDA), myeloperoxidase, 3-nitrotyrosine, and superoxide dismutase (SOD). Vitamin D status is associated with oxidative stress and inflammation in the majority of the studies with children and adolescents. Thus, the assessment of vitamin D status is important because it is associated with nontraditional cardiometabolic markers in the pediatric population (review registration: PROSPERO CRD42018109307).
Collapse
Affiliation(s)
- M S Filgueiras
- Department of Nutrition and Health, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | - N P Rocha
- Department of Nutrition and Health, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | - J F Novaes
- Department of Nutrition and Health, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | - J Bressan
- Department of Nutrition and Health, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| |
Collapse
|
15
|
Longitudinal association of 25-hydroxyvitamin D with adipokines and markers of glucose metabolism among Brazilian pregnant women. Br J Nutr 2018; 121:42-54. [DOI: 10.1017/s0007114518003057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
AbstractThis study aimed to evaluate the longitudinal association of vitamin D status with glycaemia, insulin, homoeostatic model assessment of insulin resistance, adiponectin and leptin. A prospective cohort with 181 healthy, pregnant Brazilian women was followed at the 5th–13th, 20th–26th and 30th–36th gestational weeks. In this cohort, 25-hydroxyvitamin D (25(OH)D) plasma concentrations were analysed using liquid chromatography–tandem MS. Vitamin D status was categorised as sufficient or insufficient using the Endocrine Society Practice Guidelines (≥75/<75 nmol/l) and the Institute of Medicine (≥50/<50 nmol/l) thresholds. Linear mixed-effect regression models were employed to evaluate the association between vitamin D status and each outcome, considering interaction terms between vitamin D status and gestational age (P<0·1). At baseline, 70·7 % of pregnant women had 25(OH)D levels <75 nmol/l and 16 % had levels <50 nmol/l. Women with sufficient vitamin D status at baseline, using both thresholds, presented lower glycaemia than those with insufficient 25(OH)D. Pregnant women with 25(OH)D concentrations <75 nmol/l showed lower insulin (β=−0·12; 95 % CI −0·251, 0·009;P=0·069) and adiponectin (β=−0·070; 95 % CI −0·150, 0·010;P=0·085) concentrations throughout pregnancy than those with 25(OH)D levels ≥75 nmol/l. Pregnant women with 25(OH)D <50 nmol/l at baseline presented significantly higher leptin concentrations than those with 25(OH)D levels ≥50 nmol/l (β=−0·253; 95 % CI −0·044, 0·550;P=0·095). The baseline status of vitamin D influences the biomarkers involved in glucose metabolism. Vitamin D-sufficient women at baseline had higher increases in insulin and adiponectin changes throughout gestation than those who were insufficient.
Collapse
|
16
|
Seyyed Abootorabi M, Ayremlou P, Behroozi-Lak T, Nourisaeidlou S. The effect of vitamin D supplementation on insulin resistance, visceral fat and adiponectin in vitamin D deficient women with polycystic ovary syndrome: a randomized placebo-controlled trial. Gynecol Endocrinol 2018; 34:489-494. [PMID: 29271278 DOI: 10.1080/09513590.2017.1418311] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
INTRODUCTION Low plasma 25-hydroxy-vitamin D (25OHD) is associated with polycystic ovary syndrome (PCOS). Vitamin D deficiency may contribute to the development of insulin resistance, visceral fat and low level of adiponectin which are common feature in PCOS women. This study aimed to evaluate the effect of vitamin D supplementation on insulin resistance, visceral fat, and adiponectin in hypovitaminosis D women with polycystic ovary syndrome. METHODS In this randomized, placebo-controlled clinical trial, 44 PCOS women aged 20-38 years with plasma 25OHD <20 ng/mL were randomized in the intervention or placebo groups and followed for 8 weeks. Participants received 50,000 IU of oral vitamin D3 once weekly in the intervention group or placebo. The visceral adipose tissue, Insulin resistance (HOMA-IR), HOMA-B, QUICKI, and circulating adiponectin were compared before and after the intervention within groups using paired tests and the mean changes were analyzed between two groups by independent t-test. RESULTS Of 44 eligible participates, 36 patients (81.8%) completed the study. After 8 week intervention, vitamin D supplementation compared to the placebo group significantly decreased fasting plasma glucose (FPG) (7.67 ± 7.66 versus 1.71 ± 7.50 mg/dL, p = .001) and significantly increased homeostasis model of assessment-estimated B cell function (HOMA-B) (129.76 ± 121.02 versus 48.32 ± 128.35, p = .014), Adiponectin (5.17 ± 8.09 versus -5.29 ± 8.64 mg/dL, p = .001), and serum vitamin D level (28.24 ± 6.47 versus 3.55 ± 4.25 ng/mL, p = .001). CONCLUSION Vitamin D supplementation in vitamin D deficient women with PCOS, improved the FPG, HOMA-B, Adiponectin, and serum vitamin D level.
Collapse
Affiliation(s)
- Maryam Seyyed Abootorabi
- a Department of Nutrition, School of Medicine , Urmia University of Medical Sciences , Urmia , The Islamic Republic of Iran
| | - Parvin Ayremlou
- b Clinical Research Development Unit of Imam Khomeini Hospital, Urmia University of Medical Sciences , Urmia , The Islamic Republic of Iran
| | - Tahereh Behroozi-Lak
- c Reproductive Health Research Center, Department of Infertility , Urmia University of Medical Sciences , Urmia , The Islamic Republic of Iran
| | - Sakineh Nourisaeidlou
- d Food and Beverages Safety Research Center , Urmia University of Medical Sciences , Urmia , The Islamic Republic of Iran
| |
Collapse
|
17
|
Zhang Z, Li Y, Yang X, Wang L, Xu L, Zhang Q. Susceptibility of multiple polymorphisms in ADIPOQ , ADIPOR1 and ADIPOR2 genes to myocardial infarction in Han Chinese. Gene 2018. [DOI: 10.1016/j.gene.2018.03.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
18
|
Karonova T, Belyaeva O, Jude EB, Tsiberkin A, Andreeva A, Grineva E, Pludowski P. Serum 25(OH)D and adipokines levels in people with abdominal obesity. J Steroid Biochem Mol Biol 2018; 175:170-176. [PMID: 27629594 DOI: 10.1016/j.jsbmb.2016.09.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 09/02/2016] [Accepted: 09/10/2016] [Indexed: 11/29/2022]
Abstract
Abdominal obesity is a risk factor for cardiovascular disease and diabetes mellitus and has been associated with vitamin D deficiency. Some studies have suggested an association between obesity and adipokine levels as well as low serum 25-hydroxyvitamin D (25(OH)D) level but the underlying mechanisms of the interlink between vitamin D status and serum leptin and adiponectin concentrations are still disputed. We included 435 residents (132 males) from St. Petersburg, Russia into this study. All subjects had physical examination and demographics noted. Blood was collected after an overnight fast and plasma glucose, insulin, serum lipids, 25(OH)D and adipokines (adiponectin and leptin) concentrations were determined at baseline in all participants. Abdominal obesity was diagnosed in 310 (71.3%) subjects (251 females and 59 males). Vitamin D insufficiency and deficiency were found in 314 (72.2%) subjects. Mean (95% CI) age, body mass index (BMI) and serum 25(OH)D for the cohort were 47.6±11.3years; 28.7±0.2kg/m2 and 62.5±24.3nmol/l respectively. Serum 25(OH)D level inversely correlated with body weight, waist circumference (WC) and BMI in females but not in males, was lower in diabetic than non-diabetic subjects, and was not significantly different in subjects with and without MetS. WC was positively correlated with leptin and negatively correlated with adiponectin. We found correlation between leptin and serum 25(OH)D level (r=-0.15, p=0.01) but this finding was a characteristic seen only in women. Our study showed a high prevalence of abdominal obesity, vitamin D deficiency and insufficiency in residents from North-West region of Russia, close association between adipokine (leptin, adiponectin) concentrations as well as vitamin D status and body composition (WC, BMI). However in our study the interlink between leptin level and 25(OH)D was found only in females. Further investigations are required to study the relationship between serum 25(OH)D level, obesity and serum adipokine levels.
Collapse
Affiliation(s)
- T Karonova
- Federal Almazov North-West Medical Research Centre, 2 Akkuratova str., St. Petersburg, 197341, Russian Federation; Pavlov First Saint Petersburg State Medical University, 6-8L.Tolstoy str., St. Petersburg, 197022, Russian Federation.
| | - O Belyaeva
- Pavlov First Saint Petersburg State Medical University, 6-8L.Tolstoy str., St. Petersburg, 197022, Russian Federation.
| | - E B Jude
- Tameside Hospital NHS Foundation Trust, Ashton Under Lyne, OL69RW, UK.
| | - A Tsiberkin
- Federal Almazov North-West Medical Research Centre, 2 Akkuratova str., St. Petersburg, 197341, Russian Federation.
| | - A Andreeva
- Federal Almazov North-West Medical Research Centre, 2 Akkuratova str., St. Petersburg, 197341, Russian Federation.
| | - E Grineva
- Federal Almazov North-West Medical Research Centre, 2 Akkuratova str., St. Petersburg, 197341, Russian Federation; Pavlov First Saint Petersburg State Medical University, 6-8L.Tolstoy str., St. Petersburg, 197022, Russian Federation.
| | - P Pludowski
- Department of Biochemistry, Radioimmunology and Experimental Medicine, The Children's Memorial Health Institute, 04-730, Aleja Dzieci Polskich 20 str., Warsaw, Poland.
| |
Collapse
|
19
|
Ismail MM, Abdel Hamid TA, Ibrahim AA, Marzouk H. Serum adipokines and vitamin D levels in patients with type 1 diabetes mellitus. Arch Med Sci 2017; 13:738-744. [PMID: 28721140 PMCID: PMC5510519 DOI: 10.5114/aoms.2016.60680] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 09/20/2015] [Indexed: 02/06/2023] Open
Abstract
INTRODUCTION Adiponectin, leptin and resistin are adipokines that play important roles in the regulation of lipid and carbohydrate metabolism in type 2 diabetes (T2DM). However, their influence in type 1 diabetes mellitus is still unknown. The aim of this study was to measure serum adiponectin, leptin and resistin levels and to investigate their relationships with vitamin D and other clinical and laboratory parameters in patients with type 1 diabetes. MATERIAL AND METHODS Fifty subjects with type 1 diabetes and 50 healthy age- and sex-matched subjects were selected from the Endocrinology Outpatient Clinic of Cairo University Pediatrics Hospital. Enzyme-linked immunosorbent assay was used to measure the levels of leptin, adiponectin and resistin. Vitamin D levels were measured using electro-chemiluminescence immunoassay. RESULTS There were no significant differences in adiponectin and leptin levels between diabetic and control subjects (p = 0.6 and p = 0.5 respectively). Resistin levels were significantly higher in the diabetic group compared to controls (p < 0.001) and in postpubertal patients compared to prepubertal patients (p < 0.04). Serum resistin in type 1 diabetes showed a negative correlation with vitamin D (p < 0.001) and a positive correlation with glycated hemoglobin (HbA1c) (p = 0.006), while other adipokines were not interrelated. CONCLUSIONS These results strongly support a role of resistin and vitamin D deficiency in the pathophysiology of type 1 diabetes. Vitamin D may be involved in resistin regulation through an unknown mechanism. Further studies are recommended to understand resistin regulation in type 1 diabetes.
Collapse
Affiliation(s)
- Mohamed M Ismail
- Pediatric Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | | | - Alshaymaa A Ibrahim
- Clinical and Chemical Pathology Department, National Research Centre, Cairo, Egypt
| | - Huda Marzouk
- Pediatric Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| |
Collapse
|
20
|
Effect of waist circumference on the association between serum 25-hydroxyvitamin D and serum lipids: results from the National Health and Nutrition Examination Survey 2001-2006. Public Health Nutr 2016; 20:1797-1806. [PMID: 27469173 DOI: 10.1017/s1368980016001762] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To examine the interaction between waist circumference (WC) and serum 25-hydroxyvitamin D (25(OH)D) level in their associations with serum lipids. DESIGN Cross-sectional study. The associations of serum 25(OH)D with total cholesterol, HDL cholesterol (HDL-C), LDL cholesterol (LDL-C), LDL-C:HDL-C and TAG were examined using multiple linear regression. Effect modification by WC was assessed through cross-product interaction terms between 25(OH)D and WC categories (abdominal overweight, 80-<88 cm in females/94-<102 cm in males; abdominal obesity, ≥88 cm in females/≥102 cm in males). SETTING The US National Health and Nutrition Examination Survey waves 2001-2006. SUBJECTS Non-pregnant fasting participants (n 4342) aged ≥20 years. RESULTS Lower 25(OH)D levels were significantly associated with lower HDL-C levels as well as with higher LDL-C:HDL-C and TAG levels in abdominally obese participants, but not in abdominally overweight or normal-waist participants. In contrast, lower 25(OH)D levels were associated with lower levels of total cholesterol and LDL-C in abdominally overweight and normal-waist participants only, but this association was only partly significant. However, a significant difference in the association between 25(OH)D and the lipids according to WC category was found only for LDL-C:HDL-C (P for interaction=0·02). CONCLUSIONS Our results from this large, cross-sectional sample suggest that the association between lower 25(OH)D levels and an unfavourable lipid profile is stronger in individuals with abdominal obesity than in those with abdominal overweight or a normal WC.
Collapse
|
21
|
Alizadeh N, Khalili H, Mohammadi M, Abdollahi A, Ala S. Effect of vitamin D on stress-induced hyperglycaemia and insulin resistance in critically ill patients. Int J Clin Pract 2016; 70:396-405. [PMID: 27091752 DOI: 10.1111/ijcp.12795] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
AIM Effects of vitamin D supplementation on the glycaemic indices and insulin resistance in diabetic and non-diabetic patients were studied. In this study, effects of vitamin D supplementation on stress-induced hyperglycaemia and insulin resistance were evaluated in non-diabetic surgical critically ill patients. METHODS Adult surgical patients with stress-induced hyperglycaemia within the first 24 h of admission to the ICU were recruited. The patients randomly assigned to receive either vitamin D or placebo. Patients in the vitamin D group received a single dose of 600,000 IU vitamin D3 as intramuscular injection at time of recruitment. Besides demographic and clinical characteristics of the patients, plasma glucose, insulin, 25(OH) D and adiponectin levels were measured at the time of ICU admission and day 7. Homoeostasis model assessment for insulin resistance (HOMA-IR) and homestasis model assessment adiponectin (HOMA-AD) ratio were considered at the times of assessment. RESULTS Comparing with the baseline, plasma 25(OH) D level significantly increased in the subjects who received vitamin D (p = 0.04). Improvement in fasting plasma glucose levels was detected in day 7 of the study compared with the baseline status in both groups. HOMA-IR showed a decrement pattern in vitamin D group (p = 0.09). Fasting plasma adiponectin levels increased significantly in the vitamin D group (p = 0.007), but not in the placebo group (p = 0.38). Finally, changes in HOMA-AD ratio were not significant in the both groups. CONCLUSION Vitamin D supplementation showed positive effect on plasma adiponectin level, as a biomarker of insulin sensitivity in surgical critically ill patients with stress-induced hyperglycaemia. However, effects of vitamin D supplementation on HOMA-IR and HOMA-AD as indicators of insulin resistance were not significant.
Collapse
Affiliation(s)
- N Alizadeh
- Department of Clinical Pharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - H Khalili
- Department of Clinical Pharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Imam Khomeini Hospital, Tehran, Iran
| | - M Mohammadi
- Department of Intensive Care Unit, Faculty of Medicine, Tehran University of Medical Sciences, Imam Khomeini Hospital, Tehran, Iran
| | - A Abdollahi
- Department of Pathology, Faculty of Medicine, Tehran University of Medical Sciences, Imam Khomeini Hospital, Tehran, Iran
| | - S Ala
- Department of Clinical Pharmacy, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Mazandaran, Iran
| |
Collapse
|
22
|
Dinca M, Serban MC, Sahebkar A, Mikhailidis DP, Toth PP, Martin SS, Blaha MJ, Blüher M, Gurban C, Penson P, Michos ED, Hernandez AV, Jones SR, Banach M. Does vitamin D supplementation alter plasma adipokines concentrations? A systematic review and meta-analysis of randomized controlled trials. Pharmacol Res 2016; 107:360-371. [PMID: 27038530 DOI: 10.1016/j.phrs.2016.03.035] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 03/11/2016] [Accepted: 03/13/2016] [Indexed: 01/12/2023]
Abstract
We aimed to elucidate the role of vitamin D supplementation on adipokines through a systematic review and a meta-analysis of randomized placebo-controlled trials (RCTs). The search included PUBMED, Scopus, Web of Science and Google Scholar through July 1st, 2015. Finally we identified 9 RCTs and 484 participants. Meta-analysis of data from 7 studies did not find a significant change in plasma adiponectin concentrations following vitamin D supplementation (mean difference [MD]: 4.45%, 95%CI: -3.04, 11.93, p=0.244; Q=2.18, I(2)=0%). In meta-regression, changes in plasma adiponectin concentrations following vitamin D supplementation were found to be independent of treatment duration (slope: 0.25; 95%CI: -0.69, 1.19; p=0.603) and changes in serum 25-hydroxy vitamin D [25(OH)D] levels (slope: -0.02; 95%CI: -0.15, 0.12; p=0.780). Meta-analysis of data from 6 studies did not find a significant change in plasma leptin concentrations following vitamin D supplementation (MD: -4.51%, 95%CI: -25.13, 16.11, p=0.668; Q=6.41, I(2)=21.97%). Sensitivity analysis showed that this effect size is sensitive to one of the studies; removing it resulted in a significant reduction in plasma leptin levels (MD: -12.81%, 95%CI: -24.33, -1.30, p=0.029). In meta-regression, changes in plasma leptin concentrations following vitamin D supplementation were found to be independent of treatment duration (slope: -1.93; 95%CI: -4.08, 0.23; p=0.080). However, changes in serum 25(OH)D were found to be significantly associated with changes in plasma leptin levels following vitamin D supplementation (slope: 1.05; 95%CI: 0.08, 2.02; p=0.033). In conclusion, current data did not indicate a significant effect of vitamin D supplementation on adiponectin and leptin levels.
Collapse
Affiliation(s)
| | - Maria-Corina Serban
- Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL, USA; Department of Functional Sciences, Discipline of Pathophysiology, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Metabolic Research Centre, Royal Perth Hospital, School of Medicine and Pharmacology, University of Western Australia, Perth, Australia
| | - Dimitri P Mikhailidis
- Department of Clinical Biochemistry, Royal Free Campus, University College London Medical School, University College London (UCL), London, UK
| | - Peter P Toth
- Preventive Cardiology, CGH Medical Center, Sterling, IL, USA; The Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, Baltimore, MD, USA
| | - Seth S Martin
- The Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, Baltimore, MD, USA
| | - Michael J Blaha
- The Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, Baltimore, MD, USA
| | - Matthias Blüher
- University of Leipzig, Department of Medicine, Leipzig, Germany
| | - Camelia Gurban
- Department of Biochemistry and Pharmacology, Discipline of Biochemistry, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
| | - Peter Penson
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, UK
| | - Erin D Michos
- The Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, Baltimore, MD, USA
| | - Adrian V Hernandez
- Health Outcomes and Clinical Epidemiology Section, Department of Quantitative Health Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA; School of Medicine, Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
| | - Steven R Jones
- The Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, Baltimore, MD, USA
| | - Maciej Banach
- Department of Hypertension, Chair of Nephrology and Hypertension, Medical University of Lodz, Poland.
| | | |
Collapse
|
23
|
Waist circumference modifies the association between serum 25(OH)D and systolic blood pressure: results from NHANES 2001-2006. J Hypertens 2016; 34:637-45. [PMID: 26828785 DOI: 10.1097/hjh.0000000000000840] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Results on the association between vitamin D and blood pressure are conflicting and little is known about how their relationship may be affected by obesity. Thus, we explored whether waist circumference modified the association between serum 25-hydroxyvitamin D (25(OH)D) and blood pressure in participants of the U.S. National Health and Nutrition Examination Surveys 2001-2006. METHODS We included 10 331 nonpregnant participants aged 20 years or older. The association of serum 25(OH)D with systolic and diastolic blood pressure, in the total sample and stratified by waist circumference category (abdominal overweight: 80 to <88 cm in females / 94 to <102 cm in males; abdominal obesity: ≥88 cm in females/ ≥102 cm in males), was examined using multiple linear regression. Effect modification by waist circumference was assessed through a cross-product interaction term between 25(OH)D category and waist circumference category. RESULTS Waist circumference significantly modified the inverse association between 25(OH)D and systolic blood pressure (SBP) (P value for interaction: 0.09). A stronger association of 25(OH)D levels below 15 ng/ml (reference: ≥30 ng/ml) with SBP was found in abdominally obese (β = 3.5 mmHg) than in abdominally overweight (β = 2.0 mmHg) and normal waist participants (β = 1.2 mmHg), but this interaction was only significant in participants without antihypertensive treatment. No significant effect modification was found for diastolic blood pressure. CONCLUSION Results from this large, cross-sectional sample suggest that the association between 25(OH)D and SBP is stronger in individuals with abdominal obesity than in those with a normal waist or with abdominal overweight.
Collapse
|
24
|
de Souza WN, Norde MM, Oki É, Rogero MM, Marchioni DML, Fisberg RM, Martini LA. Association between 25-hydroxyvitamin D and inflammatory biomarker levels in a cross-sectional population-based study, São Paulo, Brazil. Nutr Res 2015; 36:1-8. [PMID: 26773775 DOI: 10.1016/j.nutres.2015.10.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 09/21/2015] [Accepted: 10/21/2015] [Indexed: 01/09/2023]
Abstract
Besides the classic vitamin D function on bone homeostasis, there are bodies of evidence showing that adequate status of vitamin D can modulate inflammation. We hypothesized that higher plasma levels of 25-hydroxyvitamin D (25[OH]D) would correlate with lower plasma levels of proinflammatory cytokines, acute-phase proteins, and soluble adhesion molecules and higher plasma levels of anti-inflammatory cytokines. We included all adults (age, 20-59 years) of the population-based, cross-sectional study, Health Survey-São Paulo, conducted in São Paulo (Brazil) in the study (n = 281). Anthropometric parameters, blood pressure measurements, and a fasting blood sample were collected by trained fieldworkers. Serum 25(OH)D concentration, plasma inflammatory biomarker levels (C-reactive protein, interleukin [IL]-1β, IL-6, IL-8, IL-10, tumor necrosis factor [TNF] α, IL-12p70, adiponectin, monocyte chemoattractant protein-1, soluble intercellular adhesion molecule-1, and soluble vascular cell adhesion molecule-1), and plasma blood lipid parameters were evaluated. The prevalence of vitamin D inadequacy (<50 nmol/L) was 65.5%. Inadequate participants were younger, with lower body mass index (BMI), systolic and diastolic blood pressures, triglyceride, and total cholesterol levels as well as low-density lipoprotein cholesterol, compared with individuals adequate for vitamin D status. After adjustment, plasma concentration of soluble intercellular adhesion molecule-1 was statistically higher among adequate participants. Stratifying for BMI categories, a negative association was observed between plasma IL-6 and TNF-α levels and serum 25(OH)D concentration in normal-weight participants, whereas a negative association was detected between plasma adiponectin level and serum 25(OH)D concentration in overweight participants. The present findings suggest that BMI interacts with serum 25(OH)D levels, modulating inflammatory response and affecting plasma IL-6, TNF-α, and adiponectin levels. These data indicate that BMI plays a determinant role in the vitamin D-inflammation axis.
Collapse
Affiliation(s)
- Wysllenny N de Souza
- Nutrition Department, School of Public Health, University of São Paulo, Ave. Dr. Arnaldo, 715, 01246-904 São Paulo, Brazil
| | - Marina M Norde
- Nutrition Department, School of Public Health, University of São Paulo, Ave. Dr. Arnaldo, 715, 01246-904 São Paulo, Brazil
| | - Érica Oki
- Nutrition Department, School of Public Health, University of São Paulo, Ave. Dr. Arnaldo, 715, 01246-904 São Paulo, Brazil
| | - Marcelo M Rogero
- Nutrition Department, School of Public Health, University of São Paulo, Ave. Dr. Arnaldo, 715, 01246-904 São Paulo, Brazil
| | - Dirce M L Marchioni
- Nutrition Department, School of Public Health, University of São Paulo, Ave. Dr. Arnaldo, 715, 01246-904 São Paulo, Brazil
| | - Regina M Fisberg
- Nutrition Department, School of Public Health, University of São Paulo, Ave. Dr. Arnaldo, 715, 01246-904 São Paulo, Brazil
| | - Lígia A Martini
- Nutrition Department, School of Public Health, University of São Paulo, Ave. Dr. Arnaldo, 715, 01246-904 São Paulo, Brazil.
| |
Collapse
|
25
|
Cheng KH, Hsi E, Liu CC, Huang CN, Lee YC, Chu CS, Bao BY, Chang CF, Huang SP, Kuo PL, Lai WT. The Associations of Novel Vitamin D3 Metabolic Gene CYP27A1 Polymorphism, Adiponectin/Leptin Ratio, and Metabolic Syndrome in Middle-Aged Taiwanese Males. Int J Endocrinol 2015; 2015:658151. [PMID: 25628655 PMCID: PMC4299789 DOI: 10.1155/2015/658151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 12/08/2014] [Accepted: 12/11/2014] [Indexed: 12/20/2022] Open
Abstract
Metabolic syndrome (MetS) confers increased risks of cardiovascular disease (CVD). Both vitamin D3 and adipocytokines (especially adiponectin and leptin) have a great impact on CVD and MetS. In vitamin D3 metabolism, the vitamin D3 25-hydroxylase (CYP27A1) and 25-hydroxyvitamin D3 1-alpha-hydroxylase (CYP27B1) are two key enzymes. This study aimed to examine the influence of vitamin D3 CYP27 single nucleotide polymorphisms (SNPs) on adipocytokines and MetS. Cross-sectional data and DNA samples were collected from male volunteers (n = 649, age: 55.7 ± 4.7 years). Two tagging SNPs, CYP27A1 rs4674344 and CYP27B1 rs10877012, were selected from the HapMap project. MetS was significantly associated with the CYP27A1 rs4674344 SNP (P = 0.04) and the ratio of adiponectin/leptin (A/L ratio) was most correlated to the CYP27A1 rs4674344 SNP, appearing to be significantly lower in T-carriers than in AA subjects (3.7 ± 4.0 versus 5.1 ± 6.0, P = 0.001) and significantly negatively associated after adjustment. For each MetS component associated with the CYP27A1 rs4674344 SNP, the A/L ratios were significantly negative in preclinical stage (condition not meeting the individual criteria), except the blood pressure. In conclusion, CYP27A1 rs4674344 SNP, A/L ratio, and MetS are significantly associated and T-carriers might have a higher risk of developing MetS due to low A/L ratios in the preclinical stage.
Collapse
Affiliation(s)
- Kai-Hung Cheng
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital, 100 Tzyou 1st Road, Kaohsiung 80708, Taiwan
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Edward Hsi
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Chia-Chu Liu
- Department of Urology, Kaohsiung Medical University Hospital, 100 Tzyou 1st Road, Kaohsiung 80708, Taiwan
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Pingtung Hospital, Department of Health, Executive Yuan, Pingtung 90054, Taiwan
| | - Chun-Nung Huang
- Department of Urology, Kaohsiung Medical University Hospital, 100 Tzyou 1st Road, Kaohsiung 80708, Taiwan
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yung-Chin Lee
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Urology, Kaohsiung Medical University Hospital, 100 Tzyou 1st Road, Kaohsiung 80708, Taiwan
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chih-Sheng Chu
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital, 100 Tzyou 1st Road, Kaohsiung 80708, Taiwan
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Bo-Ying Bao
- Department of Pharmacy, China Medical University, Taichung 40402, Taiwan
| | - Chu-Fen Chang
- Department of Physical Therapy, Tzu Chi University, Hualien 97004, Taiwan
| | - Shu-Pin Huang
- Department of Urology, Kaohsiung Medical University Hospital, 100 Tzyou 1st Road, Kaohsiung 80708, Taiwan
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- *Shu-Pin Huang: and
| | - Po-Lin Kuo
- Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Wen-Ter Lai
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital, 100 Tzyou 1st Road, Kaohsiung 80708, Taiwan
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- *Wen-Ter Lai:
| |
Collapse
|
26
|
Bidulescu A, Morris AA, Stoyanova N, Meng YX, Vaccarino V, Quyyumi AA, Gibbons GH. Association between Vitamin D and Adiponectin and Its Relationship with Body Mass Index: The META-Health Study. Front Public Health 2014; 2:193. [PMID: 25353014 PMCID: PMC4196512 DOI: 10.3389/fpubh.2014.00193] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 09/29/2014] [Indexed: 12/19/2022] Open
Abstract
Background: Low vitamin D and adiponectin levels are both associated with obesity and cardiovascular disease. Previous studies have indicated that vitamin D levels are directly associated with adiponectin, and that this association varies across body mass index (BMI) categories; stronger with increasing BMI. Few studies examined this association in African-Americans (AA), known to have lower levels of vitamin D and adiponectin, and in whites. Methods: We assessed whether serum vitamin D is associated with serum adiponectin in a biracial population-based sample. Cross-sectional analyses were performed on 426 non-diabetic participants (218 whites and 208 AA) from the META-Health Study, a random sample from the metro Atlanta. Age-adjusted correlations and multivariable linear regression were used for analyses. We investigated the effect modification of the BMI categories of lean, overweight, and obese as defined by standard cut-points (25 and 30 kg/m2). Results: The mean (SD) age of our study sample was 50.5 (9) years. The mean (SD) levels of vitamin D were 27.4 (9.8) ng/mL in white women, 25.5 (9.3) ng/mL in white men, 16.9 (7.3) ng/mL in AA women, and 18.8 (7.3) ng/mL in AA men. The mean (SD) levels of adiponectin were 17.0 (17.1) μg/mL in white women, 9.9 (11.3) μg/mL in white men, 6.6 (4.8) μg/mL in AA women, and 9.4 (11.6) μg/mL in AA men. Among lean white women (n = 63), there was a significant direct association between vitamin D and adiponectin (β = 0.02, p = 0.04) after adjustment for age, systolic blood pressure, HDL-cholesterol, triglycerides, income, and season of blood drawing. On the contrary, in lean AA women (n = 23), there was a significant inverse association (β = −0.06, p = 0.01). Conclusion: The association of vitamin D and adiponectin is dependent on race, gender, and BMI category. Among lean white women, there was a significant direct association, whereas in lean AA women the association was inverse. No association was present among obese individuals.
Collapse
Affiliation(s)
- Aurelian Bidulescu
- Department of Community Health and Preventive Medicine, Cardiovascular Research Institute, Morehouse School of Medicine , Atlanta, GA , USA
| | - Alanna A Morris
- Department of Medicine, Emory School of Medicine , Atlanta, GA , USA
| | - Neli Stoyanova
- Department of Community Health and Preventive Medicine, Cardiovascular Research Institute, Morehouse School of Medicine , Atlanta, GA , USA
| | - Yuan-Xiang Meng
- Department of Family Medicine, Morehouse School of Medicine , Atlanta, GA , USA
| | - Viola Vaccarino
- Department of Epidemiology, Emory University Rollins School of Public Health , Atlanta, GA , USA
| | - Arshed A Quyyumi
- Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory School of Medicine , Atlanta, GA , USA
| | - Gary H Gibbons
- National Heart, Lung, and Blood Institute, National Institutes of Health , Bethesda, MD , USA
| |
Collapse
|
27
|
Baziar N, Jafarian K, Shadman Z, Qorbani M, Khoshniat Nikoo M, Abd Mishani M. Effect of therapeutic dose of vitamin d on serum adiponectin and glycemia in vitamin d-insufficient or deficient type 2 diabetic patients. IRANIAN RED CRESCENT MEDICAL JOURNAL 2014; 16:e21458. [PMID: 25593737 PMCID: PMC4270651 DOI: 10.5812/ircmj.21458] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Revised: 08/16/2014] [Accepted: 08/30/2014] [Indexed: 12/17/2022]
Abstract
Background: Lower vitamin D status has been reported in diabetic patients. Serum 25-hydroxyvitamin D and adiponectin were inversely associated with type 2 diabetes and insulin resistance. Vitamin D may involve in regulation of the adiponectin levels, which is directly related to insulin sensitivity. Objectives: The aim of this study was to investigate the effect of therapeutic dose of vitamin D on serum adiponectin and insulin resistance in vitamin D-insufficient or deficient type 2 diabetic patients. Materials and Methods: This double-blind, randomized, clinical trial was conducted on 81 type 2 diabetic patients with vitamin D level of 10-30 ng/mL. Intervention was 50000 IU vitamin D or placebo once a week for 8 weeks. At the beginning and end of the study, blood samples were collected after 12 hours of fasting and serum glucose, insulin, 25-hydroxyvitamin D, and adiponectin were measured. Insulin resistance was calculated by homeostasis model assessment (HOMA-IR). Results: After 8-week intervention, serum 25-hydroxyvitamin D significantly increased and reached the normal levels in patients receiving vitamin D (P < 0.001) and the levels of fasting serum glucose, insulin, and HOMA-IR were significantly decreased (P = 0.04, 0.02 and 0.007, respectively). No significant changes were observed in these levels in the placebo group. Significant differences were observed in mean changes in the above-mentioned variables between the two groups (P = 0.01, 0.04 and 0.006, respectively). No significant changes were found in serum adiponectin in the vitamin D and placebo groups (P = 0.83). Conclusions: Therapeutic dose of vitamin D can improve vitamin D status and glycemic indicators. But it seems that an 8-week intervention period was not sufficient to reveal the possible effects of vitamin D on serum adiponectin levels.
Collapse
Affiliation(s)
- Nima Baziar
- Department of Clinical Nutrition and Dietetics Therapy, Faculty of Nutrition Sciences and Food Technology, Tehran University of Medical Sciences, Tehran, IR Iran
| | - Kurosh Jafarian
- Department of Clinical Nutrition and Dietetics Therapy, Faculty of Nutrition Sciences and Food Technology, Tehran University of Medical Sciences, Tehran, IR Iran
| | - Zhaleh Shadman
- Research Center of Endocrinology and Metabolism, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, IR Iran
| | - Mostafa Qorbani
- Department of Community Medicine, Alborz University of Medical Sciences, Karaj, IR Iran
- Non Communicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, IR Iran
| | - Mohsen Khoshniat Nikoo
- Research Center of Endocrinology and Metabolism, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, IR Iran
- Corresponding Author: Mohsen Khoshniat Nikoo, Research Center of Endocrinology and Metabolism, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, IR Iran. Tel: +98-2188220094; Ext: 5; Fax: +98-2188220052, E-mail:
| | - Mahshid Abd Mishani
- Research Center of Endocrinology and Metabolism, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, IR Iran
| |
Collapse
|
28
|
Haghiac M, Basu S, Presley L, Serre D, Catalano PM, Hauguel-de Mouzon S. Patterns of adiponectin expression in term pregnancy: impact of obesity. J Clin Endocrinol Metab 2014; 99:3427-34. [PMID: 24796925 PMCID: PMC4154091 DOI: 10.1210/jc.2013-4074] [Citation(s) in RCA: 42] [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: 01/24/2023]
Abstract
CONTEXT Adiponectin (adpN) production is down-regulated in several situations associated with insulin resistance. The hypoadiponectinemia, which develops in late pregnancy, suggests a role of adpN in pregnancy-induced insulin resistance. OBJECTIVE In obese pregnancy there is a decreased systemic adpN, which results from down-regulation of gene expression in adipose tissue. SETTING AND DESIGN One hundred and thirty-three women with uncomplicated pregnancies and a wide range in pre-gravid body mass index (18-62 kg/m(2)) were recruited at term for a scheduled cesarean delivery. Maternal blood, placenta, and sc abdominal adipose tissue were obtained in the fasting state. DNA methylation was analyzed by MBD-based genome-wide methylation sequencing and methyl-specific PCR of placenta and maternal adipose tissue. mRNA and protein expression were characterized by real-time RT-PCR and immunodetection. Plasma adpN, leptin, and insulin were assayed by ELISA. RESULTS Maternal adipose tissue was the prominent site of adpN gene expression with no detectable mRNA or protein in placenta. In obese women, adipose tissue adpN mRNA was significantly decreased (P < .01) whereas DNA methylation was significantly increased (P < .001) compared with lean women. The decreased adipose tissue expression resulted in normal-weight women having significantly greater plasma adpN compared with the severely obese (12.8 ± 4.3 ng/mL vs 8.6 ± 3.1, P < .001). Plasma adpN was negatively correlated with maternal body mass index (r = -0.28, P < .001) and homeostasis model assessment indices of insulin sensitivity (r = -0.32, P < .001) but not with gestational weight gain. CONCLUSIONS Maternal adipose tissue is the primary source of circulating adpN during pregnancy. Further, based on our results, the placenta does not synthesize adiponectin at term. Obesity in pregnancy is associated with negative regulation of adpN adipose expression with increase in adpN DNA methylation associated with lower mRNA concentrations and hypoadiponectinemia. Maternal hypoadiponectinemia may have functional consequences in down-regulating biological signals transmitted by adpN receptors in various tissues, including the placenta.
Collapse
Affiliation(s)
- Maricela Haghiac
- Center of Reproductive Health, Metrohealth Medical Center (M.H., S.B., L.P., D.S., P.M.C., S.H.M.), Case Western Reserve University, Cleveland, Ohio 44106; and Genomic Medicine Institute (D.S.), Cleveland Clinic Lerner Research Institute, Cleveland, Ohio 44195
| | | | | | | | | | | |
Collapse
|
29
|
Certain dietary patterns are beneficial for the metabolic syndrome: reviewing the evidence. Nutr Res 2014; 34:559-68. [DOI: 10.1016/j.nutres.2014.06.012] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 06/02/2014] [Accepted: 06/19/2014] [Indexed: 02/06/2023]
|
30
|
Non-canonical signalling and roles of the vasoactive peptides angiotensins and kinins. Clin Sci (Lond) 2014; 126:753-74. [DOI: 10.1042/cs20130414] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
GPCRs (G-protein-coupled receptors) are among the most important targets for drug discovery due to their ubiquitous expression and participation in cellular events under both healthy and disease conditions. These receptors can be activated by a plethora of ligands, such as ions, odorants, small ligands and peptides, including angiotensins and kinins, which are vasoactive peptides that are classically involved in the pathophysiology of cardiovascular events. These peptides and their corresponding GPCRs have been reported to play roles in other systems and under pathophysiological conditions, such as cancer, central nervous system disorders, metabolic dysfunction and bone resorption. More recently, new mechanisms have been described for the functional regulation of GPCRs, including the transactivation of other signal transduction receptors and the activation of G-protein-independent pathways. The existence of such alternative mechanisms for signal transduction and the discovery of agonists that can preferentially trigger one signalling pathway over other pathways (called biased agonists) have opened new perspectives for the discovery and development of drugs with a higher specificity of action and, therefore, fewer side effects. The present review summarizes the current knowledge on the non-canonical signalling and roles of angiotensins and kinins.
Collapse
|
31
|
Affiliation(s)
- Anand Vaidya
- Metabolism Clinical and Experimental, Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
| |
Collapse
|
32
|
Investigating the causal effect of vitamin D on serum adiponectin using a Mendelian randomization approach. Eur J Clin Nutr 2013; 68:189-95. [PMID: 24219894 DOI: 10.1038/ejcn.2013.233] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 08/22/2013] [Accepted: 10/11/2013] [Indexed: 01/08/2023]
Abstract
BACKGROUND/OBJECTIVES The aim was to examine the causal effect of vitamin D on serum adiponectin using a multiple instrument Mendelian randomization approach. SUBJECTS/METHODS Serum 25-hydroxy vitamin D (25(OH)D) and serum total or high molecular weight (HMW) adiponectin were measured in two Danish population-based studies: the Inter99 study (6405 adults, 30-60 years) conducted in 1999-2001, and the MONICA10 study (2656 adults, 41-71 years) conducted in 1993-1994. RESULTS In the Inter99 study, serum 25(OH)D was positively associated with total adiponectin (the effect estimate in % per doubling of 25(OH)D was 4.78, 95% CI: 1.96, 7.68, P<0.001). Using variations in the vitamin D-binding protein gene and the filaggrin gene as instrumental variables, the causal effect in % was estimated to 61.46, 95% CI: 17.51, 120.28, P=0.003 higher adiponectin per doubling of 25(OH)D. In the MONICA10 cohort, no significant association was observed between the serum concentrations of 25(OH)D and HMW adiponectin (the effect estimate in % per doubling of 25(OH)D was -1.51, 95% CI: -5.80, 2.98, P=0.50), although the instrumental variables analysis to some extent supported a positive causal association (the effect estimate in % per doubling of 25(OH)D was 37.13, 95% CI: -3.67, 95.20, P=0.080). CONCLUSIONS The results indicate a possible causal association between serum 25(OH)D and total adiponectin. However, the association was not replicated for HMW adiponectin. Thus, further studies are needed to confirm a causal relationship.
Collapse
|
33
|
Underwood PC, Adler GK. The renin angiotensin aldosterone system and insulin resistance in humans. Curr Hypertens Rep 2013; 15:59-70. [PMID: 23242734 DOI: 10.1007/s11906-012-0323-2] [Citation(s) in RCA: 131] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Alterations in the renin angiotensin aldosterone system (RAAS) contribute to the underlying pathophysiology of insulin resistance in humans; however, individual differences in the treatment response of insulin resistance to RAAS blockade persist. Thus, understanding inter-individual differences in the relationship between the RAAS and insulin resistance may provide insights into improved personalized treatments and improved outcomes. The effects of the systemic RAAS on blood pressure regulation and glucose metabolism have been studied extensively; however, recent discoveries on the influence of local tissue RAAS in the skeletal muscle, heart, vasculature, adipocytes, and pancreas have led to an improved understanding of how activated tissue RAAS influences the development of insulin resistance and diabetes in humans. Angiotensin II (ANGII) is the predominant RAAS component contributing to insulin resistance; however, other players such as aldosterone, renin, and ACE2 are also involved. This review examines the role of local ANGII activity on insulin resistance development in skeletal muscle, adipocytes, and pancreas, followed by a discussion of the other RAAS components implicated in insulin resistance, including ACE2, Ang1-7, renin, and aldosterone.
Collapse
Affiliation(s)
- Patricia C Underwood
- Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
| | | |
Collapse
|
34
|
Vaidya A, Underwood PC, Annes JP, Sun B, Williams GH, Forman JP, Williams JS. The influence of sodium- and calcium-regulatory hormone interventions on adipocytokines in obesity and diabetes. Metabolism 2013; 62:539-47. [PMID: 23142162 PMCID: PMC3572332 DOI: 10.1016/j.metabol.2012.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Revised: 09/18/2012] [Accepted: 10/09/2012] [Indexed: 01/13/2023]
Abstract
OBJECTIVE The renin-angiotensin-aldosterone system (RAAS), vitamin D, and parathyroid hormone have all been implicated as regulators of adipocytokines and inflammation. We evaluated human interventional study protocols to investigate whether controlled modulations of these calcium- and sodium-regulatory hormones could influence adipocytokines and inflammation in obesity and diabetes. METHODS Post-hoc analyses of two separate human protocols (Protocol 1, n=14; Protocol 2, n=24) conducted in a clinical research setting after rigorous control of diet, posture, medications, and diurnal rhythm, were performed. Protocol 1 evaluated obese hypertensives with vitamin D deficiency who received an infusion of angiotensin II (AngII) before and after 1month of vitamin D3 therapy. Protocol 2 evaluated obese subjects with type 2 diabetes who also received AngII. Adipocytokines and inflammatory markers were measured before and after vitamin D3 therapy, and also before and after infusions of AngII. RESULTS Vitamin D3 therapy significantly raised 25(OH)D and 1,25(OH)2D concentrations, and lowered parathyroid hormone, but had no effect on concentrations of adiponectin, resistin, leptin, IL-6, PAI-1, urinary TGFβ1, or HOMA-IR. AngII infusions, despite significant elevations in blood pressure and serum aldosterone, did not influence adipocytokine concentrations in either protocol. CONCLUSION In contrast to prior studies conducted in healthy populations, or those that could not control major regulators of the RAAS or adipocytokines, we observed that robust modulations in calcium- and sodium-regulatory hormones did not influence adipocytokines or inflammation in obesity or diabetes. Adipose-tissue physiology in these conditions may alter the hormonal regulation of inflammatory parameters.
Collapse
Affiliation(s)
- Anand Vaidya
- Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
| | | | | | | | | | | | | |
Collapse
|
35
|
Wright ORL, Hickman IJ, Petchey WG, Sullivan CM, Ong C, Rose FJ, Ng C, Prins JB, Whitehead JP, O'Moore-Sullivan TM. The effect of 25-hydroxyvitamin D on insulin sensitivity in obesity: is it mediated via adiponectin? Can J Physiol Pharmacol 2013; 91:496-501. [PMID: 23746304 DOI: 10.1139/cjpp-2012-0436] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
There has been substantial recent interest in using vitamin D to improve insulin sensitivity and preventing/delaying diabetes in those at risk. There is little consensus on the physiological mechanisms and whether the association is direct or indirect through enhanced production of insulin-sensitising chemicals, including adiponectin. We examined cross-sectional associations between serum 25-hydroxyvitamin D (25(OH)D) and insulin sensitivity (Matsuda index), parathyroid hormone (PTH), waist circumference, body mass index (BMI), triglycerides (TG), total and high molecular weight (HMW) adiponectin, HMW : total adiponectin ratio (HMW : total adiponectin), and total cholesterol : HDL cholesterol ratio (TC:HDL cholesterol) in 137 Caucasian adults of mean age 43.3 ± 8.3 years and BMI 38.8 ± 6.9 kg/m(2). Total adiponectin (standardised β = 0.446; p < 0.001), waist circumference (standardised β = -0.216; p < 0.05), BMI (standardised β = -0.212; p < 0.05), and age (standardised β = -0.298; p < 0.001) were independently associated with insulin sensitivity. Serum 25(OH)D (standardised β = 0.114; p = 0.164) was not associated with insulin sensitivity, total or HMW adiponectin, HMW : total adiponectin, or lipids. Our results provide the novel finding that 25(OH)D is not associated with HMW adiponectin or HMW : total adiponectin in nondiabetic, obese adults and support the lack of association between 25(OH)D and lipids noted by others in similar groups of patients.
Collapse
Affiliation(s)
- Olivia R L Wright
- Centre for Dietetics Research (C-DIET-R), School of Human Movement Studies, Connell Building, The University of Queensland, Brisbane, Queensland, Australia.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Vaidya A, Underwood PC, Hopkins PN, Jeunemaitre X, Ferri C, Williams GH, Adler GK. Abnormal aldosterone physiology and cardiometabolic risk factors. Hypertension 2013; 61:886-93. [PMID: 23399714 DOI: 10.1161/hypertensionaha.111.00662] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abnormal aldosterone physiology has been implicated in the pathogenesis of cardiometabolic diseases. Single aldosterone measurements capture only a limited range of aldosterone physiology. New methods of characterizing aldosterone physiology may provide a more comprehensive understanding of its relationship with cardiometabolic disease. We evaluated whether novel indices of aldosterone responses to dietary sodium modulation, the sodium-modulated aldosterone suppression-stimulation index (SASSI for serum and SAUSSI for urine), could predict cardiometabolic risk factors. We performed cross-sectional analyses on 539 subjects studied on liberal and restricted sodium diets with serum and urinary aldosterone measurements. SASSI and SAUSSI were calculated as the ratio of aldosterone on liberal (maximally suppressed aldosterone) to the aldosterone on restricted (stimulated aldosterone) diets and associated with risk factors using adjusted regression models. Cardiometabolic risk factors associated with either impaired suppression of aldosterone on liberal diet, or impaired stimulation on restricted diet, or both; in all of these individual cases, these risk factors associated with higher SASSI or SAUSSI. In the context of abnormalities that constitute the metabolic syndrome, there was a strong positive association between the number of metabolic syndrome components (0-4) and both SASSI and SAUSSI (P<0.0001) that was independent of known aldosterone secretagogues (angiotensin II, corticotropin, potassium). SASSI and SAUSSI exhibited a high sensitivity in detecting normal individuals with zero metabolic syndrome components (86% for SASSI and 83% for SAUSSI). Assessing the physiological range of aldosterone responses may provide greater insights into adrenal pathophysiology. Dysregulated aldosterone physiology may contribute to, or result from, early cardiometabolic abnormalities.
Collapse
Affiliation(s)
- Anand Vaidya
- Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital, Boston, MA 02115, USA.
| | | | | | | | | | | | | |
Collapse
|
37
|
Calton EK, Miller VS, Soares MJ. Factors determining the risk of the metabolic syndrome: is there a central role for adiponectin? Eur J Clin Nutr 2013; 67:485-91. [PMID: 23361156 DOI: 10.1038/ejcn.2013.1] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND OBJECTIVES The pathogenesis of the metabolic syndrome (MetS) is not well understood. This review is based on the hypothesis that both traditional and emerging risk factors act through adiponectin. SUBJECTS AND METHODS We conducted a search of the literature using prominent electronic databases and search terms that included in combination: adiponectin, diet, dietary patterns, exercise, metabolic rate, MetS and testosterone. Articles were restricted to studies conducted on adult humans, reported in English and within the time period 2000-2012. RESULTS AND CONCLUSIONS Both traditional and emerging risk factors associated with the MetS show some evidence of exerting their influence through adiponectin. High-quality randomized controlled trials that alter adiponectin levels are required to further corroborate this hypothesis.
Collapse
Affiliation(s)
- E K Calton
- Discipline of Nutrition and Dietetics, School of Public Health, Curtin Health Innovation Research Institute, Curtin University, Perth, WA, Australia
| | | | | |
Collapse
|
38
|
Ulutas O, Taskapan H, Taskapan MC, Temel I. Vitamin D deficiency, insulin resistance, serum adipokine, and leptin levels in peritoneal dialysis patients. Int Urol Nephrol 2012; 45:879-84. [PMID: 23065434 DOI: 10.1007/s11255-012-0308-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2012] [Accepted: 09/24/2012] [Indexed: 12/31/2022]
Abstract
OBJECTIVE Associations between 25 hydroxy vitamin D [25(OH)D], adipokines levels, and insulin resistance have been reported. The aim of this study was to explore the effects of cholecalciferol supplementation on vitamin D levels, insulin resistance, leptin, and adiponectin levels in vitamin D-deficient peritoneal dialysis (PD) patients. METHODS In nineteen vitamin D-deficient PD patients, who were treated with cholecalciferol, fasting serum glucose, insulin, adiponectin, leptin, 25(OH)D and parathyroid hormone (PTH) were measured before and after cholecalciferol replacement therapy. Eighteen (94.7 %) PD patients with vitamin D deficiency were receiving active vitamin D compounds (alphacalciferol) for PTH control. Alphacalciferol dosing was kept constant during treatment with cholecalciferol. RESULTS While mean 25(OH)D significantly increased from (10.2 ± 4.9 ng/ml) to (82.9 ± 56.5 ng/ml) (p < 0.05), mean homeostatic model assessment-insulin resistance index significantly decreased from (4.6 ± 3.6) to (2.8 ± 2.0) after cholecalciferol replacement therapy (p < 0.05). Serum leptin levels (12.9 ± 17.6 ng/ml) significantly increased (18.1 ± 19.5 ng/ml) (p < 0.05), while there was no change in serum adiponectin, calcium, and phosphate after vitamin D replacement. Serum PTH levels significantly decreased from 551.9 ± 276.6 pg/ml to 434.0 ± 273.4 ng/ml. CONCLUSIONS Cholecalciferol replacement therapy significantly decreases PTH levels and insulin resistance. The results of this study need to be confirmed in larger clinical trials.
Collapse
Affiliation(s)
- Ozkan Ulutas
- Nephrology Department, Medical Faculty, Inonu University, Malatya, Turkey
| | | | | | | |
Collapse
|
39
|
Current world literature. Curr Opin Nephrol Hypertens 2012; 21:557-66. [PMID: 22874470 DOI: 10.1097/mnh.0b013e3283574c3b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
40
|
Vitamin D and vascular disease: the current and future status of vitamin D therapy in hypertension and kidney disease. Curr Hypertens Rep 2012; 14:111-9. [PMID: 22328068 DOI: 10.1007/s11906-012-0248-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Over the past decade, vitamin D has generated considerable interest as potentially having important effects on the vasculature and the kidney. Animal and human data indicate that vitamin D suppresses the activity of the renin-angiotensin system and improves endothelial function. Observational studies in humans suggest that low 25-hydroxyvitamin D (25[OH]D) levels are associated with a higher risk of hypertension. However, findings from randomized trials of vitamin D supplementation (with cholecalciferol or ergocalciferol) to lower blood pressure are inconsistent, possibly stemming from variability in study population, sample size, vitamin D dose, and duration. Supplementation with activated vitamin D (i.e., 1,25-dihydroxyvitamin D or analogues) in patients with chronic kidney disease reduces urine albumin excretion, an important biomarker for future decline in renal function. These studies are reviewed, with special emphasis on recent findings. Definitive studies are warranted to elucidate the effects of vitamin D supplementation on mechanisms of hypertension and kidney disease.
Collapse
|
41
|
Abstract
PURPOSE OF REVIEW Recent data suggest that mineralocorticoid receptor activation can affect insulin resistance independent of its effects on blood pressure. This review discusses new evidence linking mineralocorticoid receptor to insulin resistance and the underlying mechanisms of these effects. RECENT FINDINGS Observational studies have shown mineralocorticoid activity to be associated with insulin resistance irrespective of race, blood pressure or body weight. Increased mineralocorticoid activity may be the common link between obesity, hypertension, dyslipidemia and insulin resistance, features that make up the metabolic syndrome. Treatment of primary aldosteronism is associated with a decrease in insulin resistance and provides one of the most convincing evidences in favor of the contribution of mineralocorticoid receptor to insulin resistance. Dietary salt restriction, which increases aldosterone levels, is also associated with an increase in insulin resistance. Potential mechanisms by which mineralocorticoid receptor may contribute to insulin resistance include a decreased transcription of the insulin receptor gene, increased degradation of insulin receptor substrates, interference with insulin signaling mechanisms, decreased adiponectin production and increased oxidative stress and inflammation. Advantages of mineralocorticoid receptor antagonists on insulin resistance have been demonstrated in animal models. SUMMARY There may be a benefit of mineralocorticoid receptor antagonists in human insulin resistance states, but more clinical research is needed to explore these possibilities.
Collapse
Affiliation(s)
- Rajesh Garg
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | | |
Collapse
|
42
|
Vaidya A, Williams JS. The relationship between vitamin D and the renin-angiotensin system in the pathophysiology of hypertension, kidney disease, and diabetes. Metabolism 2012; 61:450-8. [PMID: 22075270 PMCID: PMC3290690 DOI: 10.1016/j.metabol.2011.09.007] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Revised: 09/14/2011] [Accepted: 09/21/2011] [Indexed: 12/01/2022]
Abstract
Vitamin D has been implicated in the pathophysiology of extraskeletal conditions such as hypertension, kidney disease, and diabetes via its ability to negatively regulate the renin-angiotensin system (RAS). This article reviews the evidence supporting a link between vitamin D and the RAS in these conditions, with specific emphasis on translational observations and their limitations. A literature review of animal and human studies evaluating the role of vitamin D in hypertension, kidney disease, and diabetes was performed. Excess activity of the RAS has been implicated in the pathogenesis of hypertension, chronic kidney disease, decreased insulin secretion, and insulin resistance. Animal studies provide strong support for 1,25-dihydroxyvitamin D(3)-mediated downregulation of renin expression and RAS activity via its interaction with the vitamin D receptor. Furthermore, the activity of vitamin D metabolites in animals is associated with reductions in blood pressure, proteinuria and renal injury, and with improved β-cell function. Many observational, and a few interventional, studies in humans have supported these findings; however, there is a lack of well-designed prospective human interventional studies to definitively assess clinical outcomes. There is a need for more well-designed prospective interventional studies to validate this hypothesis in human clinical outcomes.
Collapse
Affiliation(s)
- Anand Vaidya
- Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
| | | |
Collapse
|
43
|
Vaidya A, Williams JS, Forman JP. The independent association between 25-hydroxyvitamin D and adiponectin and its relation with BMI in two large cohorts: the NHS and the HPFS. Obesity (Silver Spring) 2012; 20:186-91. [PMID: 21760630 PMCID: PMC3461263 DOI: 10.1038/oby.2011.210] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Low 25-hydroxyvitamin D (25(OH)D) and adiponectin levels are both associated with obesity and cardiovascular disease. Cross-sectional studies have suggested that 25(OH)D concentrations are positively associated with adiponectin, and that this relation may strengthen with increasing BMI. However, these studies had small samples sizes and did not account for many known confounders of adiponectin levels. We evaluated whether 25(OH)D was independently associated with circulating adiponectin in two large populations, and whether BMI modified this relationship. Cross-sectional analyses were performed on 1,206 women from the Nurses' Health Study I (NHS) and 439 men from the Health Professionals Follow-Up Study. Multivariable linear regression was used to analyze the independent association between 25(OH)D and adiponectin after controlling for potential confounders. Effect modification by BMI was examined by creating interaction terms between vitamin D and BMI. 25(OH)D concentrations were positively associated with circulating adiponectin in univariate analyses, and also independently associated with adiponectin after multivariable adjustments in both populations (women: β = 0.06, P < 0.001; men: β = 0.07, P < 0.05). BMI did not significantly modify the relation between 25(OH)D and adiponectin in either population. Higher 25(OH)D concentrations were independently associated with higher adiponectin concentrations in large populations of women and men. Since lower levels of 25(OH)D and adiponectin are associated with higher cardio-metabolic risk, assessing the effect of vitamin D supplementation on adiponectin levels is warranted.
Collapse
Affiliation(s)
- Anand Vaidya
- Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
| | | | | |
Collapse
|
44
|
de Paula FJA, Rosen CJ. Vitamin D safety and requirements. Arch Biochem Biophys 2011; 523:64-72. [PMID: 22179017 DOI: 10.1016/j.abb.2011.12.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 11/30/2011] [Accepted: 12/02/2011] [Indexed: 12/22/2022]
Abstract
Vitamin D an ancient secosteroid is essential for mineral homeostasis, bone remodeling, immune modulation, and energy metabolism. Recently, debates have emerged about the daily vitamin D requirements for healthy and elderly adults, the safety and efficacy of long term supplementation and the role of vitamin D deficiency in several chronic disease states. Since this molecule acts as both a vitamin and a hormone, it should not be surprising that the effects of supplementation are multi-faceted and complex. Yet despite significant progress in the last decade, our understanding of vitamin D physiology and the clinical relevance of low circulating levels of this vitamin remains incomplete. The present review provides the reader with a comprehensive and up-to-date understanding of vitamin D requirements and safety. It also raises some provocative research questions.
Collapse
Affiliation(s)
- Francisco J A de Paula
- Department of Internal Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, 14049-900 SP, Brazil.
| | | |
Collapse
|
45
|
Bidulescu A, Liu J, Musani SK, Fox ER, Samdarshi TE, Sarpong DF, Vaccarino V, Wilson PW, Arnett DK, Din-Dzietham R, Taylor HA, Gibbons GH. Association of adiponectin with left ventricular mass in blacks: the Jackson Heart Study. Circ Heart Fail 2011; 4:747-53. [PMID: 21840935 PMCID: PMC3218236 DOI: 10.1161/circheartfailure.110.959742] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Accepted: 07/21/2011] [Indexed: 01/02/2023]
Abstract
BACKGROUND Blacks have a higher prevalence of left ventricular hypertrophy than whites. Several population-based studies have reported an inverse association between adiponectin and left ventricular mass (LVM); however, the relationship between adiponectin levels and LVM has yet to be defined in blacks. The Jackson Heart Study cohort provides an opportunity to test the hypothesis that the inverse association between adiponectin and LVM may be modified by risk factors common among blacks. METHODS AND RESULTS The study population included 2649 black Jackson Heart Study participants (mean age 51±12 years, 63% women, 51% obese, 54% with hypertension, and 16% with diabetes). Multiple linear and spline regression was used to assess the association, with adjustment for demographic, clinical, and behavioral covariates. Among all the participants, there was a statistically significant but modest inverse association between adiponectin and LVM index. Hypertension and insulin resistance emerged as statistically significant effect modifiers of this relationship. The inverse association present among the normotensive participants was explained by obesity measures such as the body mass index. Among participants with both hypertension and insulin resistance, there was a significant direct association between adiponectin and the LVM index after multivariable adjustment (β=1.55, P=0.04, per 1-SD increment in the adiponectin log value). CONCLUSIONS The association between serum adiponectin and LVM among blacks in the Jackson Heart Study cohort was dependent on hypertension and insulin resistance status. Normotensive blacks exhibited an inverse adiponectin-LVM association, whereas participants with hypertension and insulin resistance had a direct association.
Collapse
|
46
|
Kota SK, Kota SK, Jammula S, Meher LK, Panda S, Tripathy PR, Modi KD. Renin-angiotensin system activity in vitamin D deficient, obese individuals with hypertension: An urban Indian study. Indian J Endocrinol Metab 2011; 15 Suppl 4:S395-S401. [PMID: 22145146 PMCID: PMC3230105 DOI: 10.4103/2230-8210.86985] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Elevated renin-angiotensin-aldosterone system (RAAS) activity is an important mechanism in the development of hypertension. Both obesity and 25-hydroxy vitamin D [25(OH)D] deficiency have been associated with hypertension and augmented renin-angiotensin system (RAS) activity. We tried to test the hypothesis that vitamin D deficiency and obesity are associated with increased RAS activity in Indian patients with hypertension. MATERIALS AND METHODS Fifty newly detected hypertensive patients were screened. Patients with secondary hypertension, chronic kidney disease, or coronary artery disease were excluded. Patients underwent measurement of vitamin D and plasma renin and plasma aldosterone concentrations. They were divided into three groups according to their baseline body mass index (BMI; normal <25 kg/m(2), overweight 25-29.9 kg/m(2) and obese ≥30 kg/m(2)) and 25(OH)D levels (deficient <20 ng/ml, insufficient 20-29 ng/ml and optimal ≥30 ng/ml). RESULTS A total of 50 (male:female - 32:18) patients were included, with a mean age of 49.5 ± 7.8 years, mean BMI of 28.3 ± 3.4 kg/m(2) and a mean 25(OH)D concentration of 18.5 ± 6.4 ng/ml. Mean systolic blood pressure (SBP) was 162.4 ± 20.2 mm Hg and mean diastolic blood pressure (DBP) was 100.2 ± 11.2 mm Hg. All the three blood pressure parameters [SBP, DBP and mean arterial pressure (MAP)] were significantly higher among individuals with lower 25(OH)D levels. The P values for trends in SBP, DBP and MAP were 0.009, 0.01 and 0.007, respectively. Though all the three blood pressure parameters (SBP, DBP and MAP) were higher among individuals with higher BMIs, they were not achieving statistical significance. Increasing trends in PRA and PAC were noticed with lower 25(OH)D and higher BMI levels. CONCLUSION Vitamin D deficiency and obesity are associated with stimulation of RAAS activity. Vitamin D supplementation along with weight loss may be studied as a therapeutic strategy to reduce tissue RAS activity in individualswith Vitamin D deficiency and obesity.
Collapse
Affiliation(s)
- Sunil Kumar Kota
- Department of Endocrinology, Medwin Hospitals, Hyderabad, Andhra Pradesh, India
| | - Siva Krishna Kota
- Department of Anesthesia, Central Security hospital, Riyadh, Saudi Arabia
| | - Sruti Jammula
- Department of Pharmaceutics, Roland Institute of Pharmaceutical Sciences, Berhampur, India
| | | | - Sandip Panda
- Department of Cardiology, JIPMER, Puducherry, India
| | | | - Kirtikumar D. Modi
- Department of Endocrinology, Medwin Hospitals, Hyderabad, Andhra Pradesh, India
| |
Collapse
|