451
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Tan ZX, Chen YH, Xu S, Qin HY, Wang H, Zhang C, Xu DX, Zhao H. Calcitriol inhibits tumor necrosis factor alpha and macrophage inflammatory protein-2 during lipopolysaccharide-induced acute lung injury in mice. Steroids 2016; 112:81-7. [PMID: 27216047 DOI: 10.1016/j.steroids.2016.05.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 03/07/2016] [Accepted: 05/18/2016] [Indexed: 12/29/2022]
Abstract
Acute lung injury is a common complication of sepsis in intensive care unit patients with an extremely high mortality. The present study investigated the effects of calcitriol, the active form of vitamin D, on tumor necrosis factor alpha (TNF-α) and macrophage inflammatory protein-2 (MIP-2) in sepsis-induced acute lung injury. Mice were intraperitoneally (i.p.) injected with lipopolysaccharide (LPS, 1.0mg/kg) to establish the animal model of sepsis-induced acute lung injury. Some mice were i.p. injected with calcitriol (1.0μg/kg) before LPS injection. An obvious infiltration of inflammatory cells in the lungs was observed beginning at 1h after LPS injection. Correspondingly, TNF-α and MIP-2 in sera and lung homogenates were markedly elevated in LPS-treated mice. Interestingly, calcitriol obviously alleviated LPS-induced infiltration of inflammatory cells in the lungs. Moreover, calcitriol markedly attenuated LPS-induced elevation of TNF-α and MIP-2 in sera and lung homogenates. Further analysis showed that calcitriol repressed LPS-induced p38 mitogen-activated protein kinase (MAPK) and protein kinase B (Akt) phosphorylation. In addition, calcitriol blocked LPS-induced nuclear translocation of nuclear factor kappa B (NF-κB) p65 and p50 subunit in the lungs. Taken together, these results suggest that calcitriol inhibits inflammatory cytokines production in LPS-induced acute lung injury.
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Affiliation(s)
- Zhu-Xia Tan
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Yuan-Hua Chen
- Department of Toxicology, Anhui Medical University, Hefei, China; Department of Histology and Embryology, Anhui Medical University, Hefei, China
| | - Shen Xu
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Hou-Ying Qin
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Hua Wang
- Department of Toxicology, Anhui Medical University, Hefei, China
| | - Cheng Zhang
- Department of Toxicology, Anhui Medical University, Hefei, China
| | - De-Xiang Xu
- Department of Toxicology, Anhui Medical University, Hefei, China.
| | - Hui Zhao
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China.
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452
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Nguyen AH, Lim VM, Fleegel JP, Hunter WJ, Agrawal DK. Cutaneous expression of TREM, vitamin D receptor and HMGB1 in vitamin D deficiency. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2016; 9:8506-8512. [PMID: 32699567 PMCID: PMC7375687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Signaling pathways of the vitamin D receptor (VDR) and the triggering receptor expressed on myeloid cells (TREM) have been independently implicated in the biology of numerous of cutaneous pathologies. There is substantial evidence for possible crosstalk between these pathways, though the relationship between VDR and TREMs remains unclear. In this study, we characterize the effects of vitamin D-deficiency and sufficiency on the cutaneous expression of TREM-1, TREM-2, VDR, HMGB1, and RAGE. Cutaneous tissue isolated from Yucatan microswine were immunohistochemically evaluated for epidermal expression of TREM-1, TREM-2, VDR, HMGB1, and RAGE. The swine were fed a vitamin D-deficient or vitamin D-sufficient diet to examine the role of vitamin D state on levels of these markers. In vitamin D-sufficient animals, keratinocytes exhibited elevated levels of TREM-1, TREM-2. Additionally, TREM-1 expression predominated in basal cells, whereas TREM-2 levels were higher in keratinocytes, regardless of vitamin D state. Levels of HMGB1 and RAGE did not differ by vitamin D state. VDR expression was consistently higher in the cytoplasm and nuclei of basal cells, when compared to keratinocytes. Our findings suggest a role of vitamin D in signaling of TREM pathways. Additionally, the TREM ratio may play a role in keratinocyte differentiation and should be explored further. Possible signaling crosstalk between these pathways has a potential role in progression of cutaneous malignancies and other inflammatory pathologies.
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Affiliation(s)
- Austin H Nguyen
- Department of Clinical and Translational Science, Creighton University School of Medicine, Omaha, NE, USA
| | - Victorial M Lim
- Department of Clinical and Translational Science, Creighton University School of Medicine, Omaha, NE, USA
| | - Jonathan P Fleegel
- Department of Clinical and Translational Science, Creighton University School of Medicine, Omaha, NE, USA
| | - William J Hunter
- Department of Clinical and Translational Science, Creighton University School of Medicine, Omaha, NE, USA
| | - Devendra K Agrawal
- Department of Clinical and Translational Science, Creighton University School of Medicine, Omaha, NE, USA
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453
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Bezrati I, Hammami R, Ben Fradj MK, Martone D, Padulo J, Feki M, Chaouachi A, Kaabachi N. Association of plasma 25-hydroxyvitamin D with physical performance in physically active children. Appl Physiol Nutr Metab 2016; 41:1124-1128. [PMID: 27764544 DOI: 10.1139/apnm-2016-0097] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Vitamin D is thought to regulate skeletal muscle function and boost physical performance. The aim of this study was to assess the relationship between vitamin D and physical performance in physically active children. This cross-sectional study included 125 children who practice football as a leisure activity. Plasma 25-hydroxyvitamin D (25-OHD) was assessed using a chemiluminescence immunoassay method. Vitamin D inadequacy was defined as 25-OHD < 20 ng/mL. Physical performance testing included measurements of muscle strength (maximal isometric contraction), jumping ability (vertical jump, standing broad jump, triple hop test), linear sprint (10 m and 20 m), and agility (9 × 4-m shuttle run). Plasma 25-OHD concentrations were positively correlated with muscle strength (r = 0.539; p < 0.001), vertical jump (r = 0.528; p < 0.001), and standing broad jump (r = 0.492; p < 0.001) but inversely correlated with sprint performance (r = -0.539; p < 0.001). In multivariate analysis models, plasma 25-OHD concentrations were associated with each physical performance parameter independently of age, maturity status, body mass index, fat mass, and protein and calcium intakes. In conclusion, a low plasma 25-OHD level was associated with decreased muscle strength, agility, and jumping and sprinting abilities in physically active children. Vitamin D inadequacy may limit exercise performance. Further research should verify whether correction of vitamin D deficiency enhances physical performance.
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Affiliation(s)
- Ikram Bezrati
- a Rabta Hospital, Laboratory of Biochemistry, LR99ES11, 1007 Tunis, Tunisia.,b National Center of Medicine and Sciences in Sports, Tunisian Research Laboratory "Sport Performance Optimization", 2010 Tunis, Tunisia.,c University Tunis El Manar, Faculty of Medicine of Tunis, 1007 Tunis, Tunisia
| | - Raouf Hammami
- b National Center of Medicine and Sciences in Sports, Tunisian Research Laboratory "Sport Performance Optimization", 2010 Tunis, Tunisia
| | | | | | - Johnny Padulo
- b National Center of Medicine and Sciences in Sports, Tunisian Research Laboratory "Sport Performance Optimization", 2010 Tunis, Tunisia.,e eCampus University, 22060 Novedrate, Italy.,f University of Split, Faculty of Kinesiology, 21000 Split, Croatia
| | - Moncef Feki
- a Rabta Hospital, Laboratory of Biochemistry, LR99ES11, 1007 Tunis, Tunisia.,c University Tunis El Manar, Faculty of Medicine of Tunis, 1007 Tunis, Tunisia
| | - Anis Chaouachi
- b National Center of Medicine and Sciences in Sports, Tunisian Research Laboratory "Sport Performance Optimization", 2010 Tunis, Tunisia
| | - Naziha Kaabachi
- a Rabta Hospital, Laboratory of Biochemistry, LR99ES11, 1007 Tunis, Tunisia
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454
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Dulla YAT, Kurauchi Y, Hisatsune A, Seki T, Shudo K, Katsuki H. Regulatory Mechanisms of Vitamin D 3 on Production of Nitric Oxide and Pro-inflammatory Cytokines in Microglial BV-2 Cells. Neurochem Res 2016; 41:2848-2858. [PMID: 27401255 DOI: 10.1007/s11064-016-2000-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 06/19/2016] [Accepted: 07/07/2016] [Indexed: 11/24/2022]
Abstract
Inhibition of pro-inflammatory functions of microglia has been considered a promising strategy to prevent pathogenic events in the central nervous system under neurodegenerative conditions. Here we examined potential inhibitory effects of nuclear receptor ligands on lipopolysaccharide (LPS)-induced inflammatory responses in microglial BV-2 cells. We demonstrate that a vitamin D receptor agonist 1,25-dihydroxyvitamin D3 (VD3) and a retinoid X receptor agonist HX630 affect LPS-induced expression of pro-inflammatory factors. Specifically, both VD3 and HX630 inhibited expression of mRNAs encoding inducible nitric oxide synthase (iNOS) and IL-6, whereas expression of IL-1β mRNA was inhibited only by VD3. The inhibitory effect of VD3 and HX630 on expression of iNOS and IL-6 mRNAs was additive. Effect of VD3 and HX630 was also observed for inhibition of iNOS protein expression and nitric oxide production. Moreover, VD3 and HX630 inhibited LPS-induced activation of extracellular signal-regulated kinase (ERK) and nuclear translocation of nuclear factor κB (NF-κB). PD98059, an inhibitor of ERK kinase, attenuated LPS-induced nuclear translocation of NF-κB and induction of mRNAs for iNOS, IL-1β and IL-6. These results indicate that VD3 can inhibit production of several pro-inflammatory molecules from microglia, and that suppression of ERK activation is at least in part involved in the anti-inflammatory effect of VD3.
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Affiliation(s)
- Yevgeny Aster T Dulla
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.,Program for Leading Graduate Schools "HIGO (Health life science: Interdisciplinary and Glocal Oriented) Program", Kumamoto, Japan
| | - Yuki Kurauchi
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Akinori Hisatsune
- Program for Leading Graduate Schools "HIGO (Health life science: Interdisciplinary and Glocal Oriented) Program", Kumamoto, Japan.,Priority Organization for Innovation and Excellence, Kumamoto University, Kumamoto, Japan
| | - Takahiro Seki
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Koichi Shudo
- Research Foundation Itsuu Laboratory, Tokyo, Japan
| | - Hiroshi Katsuki
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.
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455
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Dauletbaev N, Herscovitch K, Das M, Chen H, Bernier J, Matouk E, Bérubé J, Rousseau S, Lands LC. Down-regulation of IL-8 by high-dose vitamin D is specific to hyperinflammatory macrophages and involves mechanisms beyond up-regulation of DUSP1. Br J Pharmacol 2016; 172:4757-71. [PMID: 26178144 DOI: 10.1111/bph.13249] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 06/17/2015] [Accepted: 06/29/2015] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND AND PURPOSE There is current interest in vitamin D as a potential anti-inflammatory treatment for chronic inflammatory lung disease, including cystic fibrosis (CF). Vitamin D transcriptionally up-regulates the anti-inflammatory gene DUSP1, which partly controls production of the inflammatory chemokine IL-8. IL-8 is overabundant in CF airways, potentially due to hyperinflammatory responses of CF macrophages. We tested the ability of vitamin D metabolites to down-regulate IL-8 production in CF macrophages. EXPERIMENTAL APPROACH CF and healthy monocyte-derived macrophages (MDM) were treated with two vitamin D metabolites, 25-hydroxyvitamin D3 (25OHD3 ) and 1,25-dihydroxyvitamin D3 (1,25(OH)2 D3 ), or paricalcitol, synthetic analogue of 1,25(OH)2 D3 . 25OHD3 was tested at doses of 25-150 nM, whereas 1,25(OH)2 D3 and paricalcitol at doses of up to 100 nM. IL-8 was stimulated by bacterial virulence factors. As potential anti-inflammatory mechanism of vitamin D metabolites, we assessed up-regulation of DUSP1. KEY RESULTS MDM from patients with CF and some healthy donors showed excessive production of stimulated IL-8, highlighting their hyperinflammatory phenotype. Vitamin D metabolites down-regulated stimulated IL-8 only in those hyperinflammatory MDM, and only when used at high doses (>100 nM for 25OHD3 , or >1 nM for 1,25(OH)2 D3 and paricalcitol). The magnitude of IL-8 down-regulation by vitamin D metabolites or paricalcitol was moderate (∼30% vs. >70% by low-dose dexamethasone). Transcriptional up-regulation of DUSP1 by vitamin D metabolites was seen in all tested MDM, regardless of IL-8 down-regulation. CONCLUSIONS AND IMPLICATIONS Vitamin D metabolites and their analogues moderately down-regulate IL-8 in hyperinflammatory macrophages, including those from CF. This down-regulation appears to go through DUSP1-independent mechanisms.
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Affiliation(s)
- N Dauletbaev
- Translational Research in Respiratory Diseases, The Research Institute of McGill University Health Centre, Montreal, QC, Canada
| | - K Herscovitch
- Translational Research in Respiratory Diseases, The Research Institute of McGill University Health Centre, Montreal, QC, Canada
| | - M Das
- Translational Research in Respiratory Diseases, The Research Institute of McGill University Health Centre, Montreal, QC, Canada
| | - H Chen
- Translational Research in Respiratory Diseases, The Research Institute of McGill University Health Centre, Montreal, QC, Canada
| | - J Bernier
- Division of Respiratory Medicine, Montreal Chest Institute, Montreal, QC, Canada
| | - E Matouk
- Division of Respiratory Medicine, Montreal Chest Institute, Montreal, QC, Canada
| | - J Bérubé
- Meakins-Christie Laboratories, McGill University, Montreal, QC, Canada
| | - S Rousseau
- Meakins-Christie Laboratories, McGill University, Montreal, QC, Canada
| | - L C Lands
- Translational Research in Respiratory Diseases, The Research Institute of McGill University Health Centre, Montreal, QC, Canada.,Division of Respiratory Medicine, Montreal Children's Hospital, Montreal, QC, Canada
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456
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Srikanth P, Chun RF, Hewison M, Adams JS, Bouillon R, Vanderschueren D, Lane N, Cawthon PM, Dam T, Barrett-Connor E, Daniels LB, Shikany JM, Stefanick ML, Cauley JA, Orwoll ES, Nielson CM. Associations of total and free 25OHD and 1,25(OH)2D with serum markers of inflammation in older men. Osteoporos Int 2016; 27:2291-2300. [PMID: 26905270 PMCID: PMC4902735 DOI: 10.1007/s00198-016-3537-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 02/10/2016] [Indexed: 01/08/2023]
Abstract
UNLABELLED Vitamin D is hypothesized to suppress inflammation. We tested total and free vitamin D metabolites and their association with inflammatory markers. Interleukin-6 levels were lower with higher 25-hydroxyvitamin D. 1,25-dihydroxyvitamin D and free 25OHD associations mirrored those of 25OHD. However, associations for the two metabolites diverged for tumor necrosis factor alpha (TNF-α) soluble receptors. INTRODUCTION Vitamin D is hypothesized to suppress inflammation, and circulating 25-hydroxyvitamin D (25OHD) and inflammatory markers are inversely correlated. However, total serum 25OHD may not be the best indicator of biologically active vitamin D. METHODS We tested serum total 25OHD, total 1,25(OH)2D, vitamin D binding protein (DBP), and estimated free 25OHD and free 1,25(OH)2D associations with inflammatory markers serum interleukin-6 (IL-6), TNF-α and their soluble receptors, interleukin-10 (IL-10), and C-reactive protein (CRP) as continuous outcomes and the presence of ≥2 inflammatory markers in the highest quartile as a dichotomous outcome, in a random subcohort of 679 men in the Osteoporotic Fractures in Men (MrOS) study. RESULTS IL-6 was lower in men with higher 25OHD (-0.23 μg/mL per standard deviation (SD) increase in 25OHD, 95 % confidence intervals (CI) -0.07 to -0.38 μg/mL) and with higher 1,25(OH)2D (-0.20 μg/mL, 95 % CI -0.0004 to -0.39 μg/mL); free D associations were slightly stronger. 25OHD and DBP, but not 1,25(OH)2D, were independently associated with IL-6. TNF-α soluble receptors were inversely associated with 1,25(OH)2D but positively associated with 25OHD, and each had independent effects. The strongest association with ≥2 inflammatory markers in the highest quartile was for free 1,25(OH)2D (odds ratios (OR) 0.70, 95 % CI 0.54 to 0.89 per SD increase in free 1,25(OH)2D). CONCLUSIONS Associations of 1,25(OH)2D and free 25OHD with IL-6 mirrored those of 25OHD, suggesting that 1,25(OH)2D and free D do not improve upon 25OHD in population-based IL-6 studies. However, associations for the two metabolites diverged for TNF-α soluble receptor, warranting examination of both metabolites in studies of TNF-α and its antagonists.
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Affiliation(s)
- P Srikanth
- Department of Public Health and Preventive Medicine, Oregon Health & Science University, Portland, OR, USA
| | - R F Chun
- Department of Orthopaedic Surgery and Orthopaedic Hospital Research Center, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - M Hewison
- Centre for Endocrinology, Diabetes and Metabolism, University of Birmingham, Birmingham, UK
| | - J S Adams
- Department of Orthopaedic Surgery and Orthopaedic Hospital Research Center, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - R Bouillon
- Clinical and Experimental Endocrinology, Department of Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium
- Department of Endocrinology, University Hospital, Leuven, Belgium
| | - D Vanderschueren
- Clinical and Experimental Endocrinology, Department of Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium
- Department of Endocrinology, University Hospital, Leuven, Belgium
| | - N Lane
- Division of Rheumatology, University of California Davis, Davis, CA, USA
| | - P M Cawthon
- California Pacific Medical Center Research Institute, San Francisco, CA, USA
| | - T Dam
- Department of Medicine, Division of Geriatric Medicine and Aging, Columbia University, New York, NY, USA
| | - E Barrett-Connor
- Division of Epidemiology, Department of Family and Preventive Medicine, University of California, San Diego, CA, USA
| | - L B Daniels
- Division of Epidemiology, Department of Family and Preventive Medicine, University of California, San Diego, CA, USA
- Division of Cardiology, Department of Medicine, University of California, San Diego, CA, USA
| | - J M Shikany
- University of Alabama at Birmingham, Birmingham, AL, USA
| | - M L Stefanick
- Stanford Prevention Research Center, School of Medicine, Stanford University, Stanford, CA, USA
| | - J A Cauley
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - E S Orwoll
- Bone and Mineral Unit, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, CR113, Portland, OR, 97239, USA.
| | - C M Nielson
- Department of Public Health and Preventive Medicine, Oregon Health & Science University, Portland, OR, USA
- Bone and Mineral Unit, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, CR113, Portland, OR, 97239, USA
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457
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Activation of the vitamin D receptor selectively interferes with calcineurin-mediated inflammation: a clinical evaluation in the abdominal aortic aneurysm. J Transl Med 2016; 96:784-90. [PMID: 27239732 DOI: 10.1038/labinvest.2016.55] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 03/17/2016] [Accepted: 03/29/2016] [Indexed: 12/23/2022] Open
Abstract
In vitro and in vivo studies attribute potent immune regulatory properties to the vitamin D receptor (VDR). Yet, it is unclear to what extend these observations translate to the clinical context of (vascular) inflammation. This clinical study evaluates the potential of a VDR agonist to quench vascular inflammation. Patients scheduled for open abdominal aneurysm repair received paricalcitol 1 μg daily during 2-4 weeks before repair. Results were compared with matched controls. Evaluation in a parallel group showed that AAA patients are vitamin D insufficient (median plasma vitamin D: 43 (30-62 (IQR)) nmol/l). Aneurysm wall samples were collected during surgery, and the inflammatory footprint was studied. The brief paricalcitol intervention resulted in a selective 73% reduction in CD4+ T-helper cell content (P<0.024) and a parallel 35% reduction in T-cell (CD3+) content (P<0.032). On the mRNA level, paricalcitol reduced expression of T-cell-associated cytokines IL-2, 4, and 10 (P<0.019). No effect was found on other inflammatory mediators. On the protease level, selective effects were found for cathepsin K (P<0.036) and L (P<0.005). Collectively, these effects converge at the level of calcineurin activity. An effect of the VDR agonist on calcineurin activity was confirmed in a mixed lymphocyte reaction. In conclusion, brief course of the VDR agonist paricalcitol has profound effects on local inflammation via reduced T-cell activation. The anti-inflammatory potential of VDR activation in vitamin D insufficient patients is highly selective and appears to be mediated by an effect on calcineurin-mediated responses.
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458
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Lloberas J, Valverde-Estrella L, Tur J, Vico T, Celada A. Mitogen-Activated Protein Kinases and Mitogen Kinase Phosphatase 1: A Critical Interplay in Macrophage Biology. Front Mol Biosci 2016; 3:28. [PMID: 27446931 PMCID: PMC4923182 DOI: 10.3389/fmolb.2016.00028] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 06/13/2016] [Indexed: 12/21/2022] Open
Abstract
Macrophages are necessary in multiple processes during the immune response or inflammation. This review emphasizes the critical role of the mitogen-activated protein kinases (MAPKs) and mitogen kinase phosphatase-1 (MKP-1) in the functional activities of macrophages. While the phosphorylation of MAPKs is required for macrophage activation or proliferation, MKP-1 dephosphorylates these kinases, thus playing a balancing role in the control of macrophage behavior. MKP-1 is a nuclear-localized dual-specificity phosphatase whose expression is regulated at multiple levels, including at the transcriptional and post-transcriptional level. The regulatory role of MKP-1 in the interplay between MAPK phosphorylation/dephosphorylation makes this molecule a critical regulator of macrophage biology and inflammation.
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Affiliation(s)
- Jorge Lloberas
- Departament of Cell Biology, Physiology and Immunology, Universitat de Barcelona Barcelona, Spain
| | - Lorena Valverde-Estrella
- Departament of Cell Biology, Physiology and Immunology, Universitat de Barcelona Barcelona, Spain
| | - Juan Tur
- Departament of Cell Biology, Physiology and Immunology, Universitat de Barcelona Barcelona, Spain
| | - Tania Vico
- Departament of Cell Biology, Physiology and Immunology, Universitat de Barcelona Barcelona, Spain
| | - Antonio Celada
- Departament of Cell Biology, Physiology and Immunology, Universitat de Barcelona Barcelona, Spain
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459
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Soveid M, Asadi N, Sianati M. Plasma 25-Hydroxyvitamin D and Severe Pre-Eclampsia in a Population With Profound Vitamin D Deficiency. WOMEN’S HEALTH BULLETIN 2016. [DOI: 10.17795/whb-32665] [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] Open
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460
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Blondon M, Cushman M, Jenny N, Michos ED, Smith NL, Kestenbaum B, de Boer IH. Associations of Serum 25-Hydroxyvitamin D With Hemostatic and Inflammatory Biomarkers in the Multi-Ethnic Study of Atherosclerosis. J Clin Endocrinol Metab 2016; 101:2348-57. [PMID: 27023449 PMCID: PMC4891795 DOI: 10.1210/jc.2016-1368] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
CONTEXT Mechanisms explaining documented associations of 25-hydroxyvitamin D [25(OH)D] deficiency with increased risks of cardiovascular disease (CVD) and venous thromboembolism may relate to adverse hemostatic and inflammatory responses. OBJECTIVE To evaluate whether 25(OH)D deficiency is associated with a prothrombotic and proinflammatory biological profile. DESIGN Cross-sectional analyses. SETTING The Multi-Ethnic Study of Atherosclerosis, a multicenter prospective cohort of American adults. PARTICIPANTS Up to 6554 adults free of CVD. MAIN OUTCOME MEASURES Ten hemostatic biomarkers (D-dimer, fibrinogen, factor VIII, plasmin-antiplasmin, and homocysteine [n = 6443]; von Willebrand factor, soluble tissue factor, plasminogen activator inhibitor-1 (PAI-1), total tissue factor pathway inhibitor (TFPI), and soluble thrombomodulin [n = 814]), and three inflammatory biomarkers (IL-6, C-reactive protein [n = 6443], and TNF-α soluble receptor [n = 3802]). RESULTS Among 6443 subjects (46.6% men; mean age, 62.1 years; mean body mass index, 28.3 kg/m(2)) of White (37.8%), Black (27.2%), Chinese (12.2%), and Hispanic (21.8%) race/ethnicity, mean 25(OH)D was 25.3 ng/mL. After multiple adjustment, 25(OH)D concentrations were associated with concentrations of IL-6 and homocysteine and also with concentrations of PAI-1 and TFPI: per 10 ng/mL decrement in 25(OH)D, 5.1% higher IL-6 (95% confidence interval [CI], 3.4-6.9; P < .001); 3.7% higher homocysteine (95% CI, 3.0-4.3; P < .001); 7.0% higher PAI-1 (95% CI, 0.9-13.6; P = .025); and 2.1% higher TFPI (95% CI, 0.0-4.2; P = .047), without racial/ethnic heterogeneity. No significant associations were observed for other hemostatic and inflammatory biomarkers. CONCLUSIONS Increased inflammation as reflected by higher circulating IL-6 and increased homocysteine concentrations may represent mechanisms linking 25(OH)D deficiency to greater risks of CVD and perhaps venous thromboembolism. Low concentrations of 25(OH)D were also associated with PAI-1 and TFPI concentrations, but not with other hemostatic biomarkers.
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Affiliation(s)
- Marc Blondon
- Division of Angiology and Hemostasis (M.B.), Geneva University Hospitals and Faculty of Medicine, 1205 Geneva, Switzerland; Department of Medicine and Pathology & Laboratory Medicine (M.C.), University of Vermont College of Medicine, Burlington, Vermont 05401; Department of Pathology & Laboratory Medicine (N.J.), University of Vermont College of Medicine, Burlington, Vermont 05446; Department of Medicine (Cardiology) (E.D.M.), Johns Hopkins University School of Medicine, Baltimore, Maryland 21287; Department of Epidemiology (N.L.S.), University of Washington, Seattle, Washington 98195; Group Health Research Institute (N.L.S.), Group Health Cooperative, Seattle, Washington 98112; Seattle Epidemiologic Research and Information Center (N.L.S.), Veterans Affairs Office of Research and Development, Seattle, Washington 98108; and Department of Epidemiology and Nephrology (B.K., I.H.d.B.), University of Washington, Seattle, Washington 98195
| | - Mary Cushman
- Division of Angiology and Hemostasis (M.B.), Geneva University Hospitals and Faculty of Medicine, 1205 Geneva, Switzerland; Department of Medicine and Pathology & Laboratory Medicine (M.C.), University of Vermont College of Medicine, Burlington, Vermont 05401; Department of Pathology & Laboratory Medicine (N.J.), University of Vermont College of Medicine, Burlington, Vermont 05446; Department of Medicine (Cardiology) (E.D.M.), Johns Hopkins University School of Medicine, Baltimore, Maryland 21287; Department of Epidemiology (N.L.S.), University of Washington, Seattle, Washington 98195; Group Health Research Institute (N.L.S.), Group Health Cooperative, Seattle, Washington 98112; Seattle Epidemiologic Research and Information Center (N.L.S.), Veterans Affairs Office of Research and Development, Seattle, Washington 98108; and Department of Epidemiology and Nephrology (B.K., I.H.d.B.), University of Washington, Seattle, Washington 98195
| | - Nancy Jenny
- Division of Angiology and Hemostasis (M.B.), Geneva University Hospitals and Faculty of Medicine, 1205 Geneva, Switzerland; Department of Medicine and Pathology & Laboratory Medicine (M.C.), University of Vermont College of Medicine, Burlington, Vermont 05401; Department of Pathology & Laboratory Medicine (N.J.), University of Vermont College of Medicine, Burlington, Vermont 05446; Department of Medicine (Cardiology) (E.D.M.), Johns Hopkins University School of Medicine, Baltimore, Maryland 21287; Department of Epidemiology (N.L.S.), University of Washington, Seattle, Washington 98195; Group Health Research Institute (N.L.S.), Group Health Cooperative, Seattle, Washington 98112; Seattle Epidemiologic Research and Information Center (N.L.S.), Veterans Affairs Office of Research and Development, Seattle, Washington 98108; and Department of Epidemiology and Nephrology (B.K., I.H.d.B.), University of Washington, Seattle, Washington 98195
| | - Erin D Michos
- Division of Angiology and Hemostasis (M.B.), Geneva University Hospitals and Faculty of Medicine, 1205 Geneva, Switzerland; Department of Medicine and Pathology & Laboratory Medicine (M.C.), University of Vermont College of Medicine, Burlington, Vermont 05401; Department of Pathology & Laboratory Medicine (N.J.), University of Vermont College of Medicine, Burlington, Vermont 05446; Department of Medicine (Cardiology) (E.D.M.), Johns Hopkins University School of Medicine, Baltimore, Maryland 21287; Department of Epidemiology (N.L.S.), University of Washington, Seattle, Washington 98195; Group Health Research Institute (N.L.S.), Group Health Cooperative, Seattle, Washington 98112; Seattle Epidemiologic Research and Information Center (N.L.S.), Veterans Affairs Office of Research and Development, Seattle, Washington 98108; and Department of Epidemiology and Nephrology (B.K., I.H.d.B.), University of Washington, Seattle, Washington 98195
| | - Nicholas L Smith
- Division of Angiology and Hemostasis (M.B.), Geneva University Hospitals and Faculty of Medicine, 1205 Geneva, Switzerland; Department of Medicine and Pathology & Laboratory Medicine (M.C.), University of Vermont College of Medicine, Burlington, Vermont 05401; Department of Pathology & Laboratory Medicine (N.J.), University of Vermont College of Medicine, Burlington, Vermont 05446; Department of Medicine (Cardiology) (E.D.M.), Johns Hopkins University School of Medicine, Baltimore, Maryland 21287; Department of Epidemiology (N.L.S.), University of Washington, Seattle, Washington 98195; Group Health Research Institute (N.L.S.), Group Health Cooperative, Seattle, Washington 98112; Seattle Epidemiologic Research and Information Center (N.L.S.), Veterans Affairs Office of Research and Development, Seattle, Washington 98108; and Department of Epidemiology and Nephrology (B.K., I.H.d.B.), University of Washington, Seattle, Washington 98195
| | - Bryan Kestenbaum
- Division of Angiology and Hemostasis (M.B.), Geneva University Hospitals and Faculty of Medicine, 1205 Geneva, Switzerland; Department of Medicine and Pathology & Laboratory Medicine (M.C.), University of Vermont College of Medicine, Burlington, Vermont 05401; Department of Pathology & Laboratory Medicine (N.J.), University of Vermont College of Medicine, Burlington, Vermont 05446; Department of Medicine (Cardiology) (E.D.M.), Johns Hopkins University School of Medicine, Baltimore, Maryland 21287; Department of Epidemiology (N.L.S.), University of Washington, Seattle, Washington 98195; Group Health Research Institute (N.L.S.), Group Health Cooperative, Seattle, Washington 98112; Seattle Epidemiologic Research and Information Center (N.L.S.), Veterans Affairs Office of Research and Development, Seattle, Washington 98108; and Department of Epidemiology and Nephrology (B.K., I.H.d.B.), University of Washington, Seattle, Washington 98195
| | - Ian H de Boer
- Division of Angiology and Hemostasis (M.B.), Geneva University Hospitals and Faculty of Medicine, 1205 Geneva, Switzerland; Department of Medicine and Pathology & Laboratory Medicine (M.C.), University of Vermont College of Medicine, Burlington, Vermont 05401; Department of Pathology & Laboratory Medicine (N.J.), University of Vermont College of Medicine, Burlington, Vermont 05446; Department of Medicine (Cardiology) (E.D.M.), Johns Hopkins University School of Medicine, Baltimore, Maryland 21287; Department of Epidemiology (N.L.S.), University of Washington, Seattle, Washington 98195; Group Health Research Institute (N.L.S.), Group Health Cooperative, Seattle, Washington 98112; Seattle Epidemiologic Research and Information Center (N.L.S.), Veterans Affairs Office of Research and Development, Seattle, Washington 98108; and Department of Epidemiology and Nephrology (B.K., I.H.d.B.), University of Washington, Seattle, Washington 98195
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Miyashita M, Koga K, Izumi G, Sue F, Makabe T, Taguchi A, Nagai M, Urata Y, Takamura M, Harada M, Hirata T, Hirota Y, Wada-Hiraike O, Fujii T, Osuga Y. Effects of 1,25-Dihydroxy Vitamin D3 on Endometriosis. J Clin Endocrinol Metab 2016; 101:2371-9. [PMID: 27035829 DOI: 10.1210/jc.2016-1515] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
CONTEXT Endometriosis is an estrogen-dependent, chronic inflammatory disease. Recent studies have shown that vitamin D (VD) is an effective modulator of the immune system and plays an important role in controlling many inflammatory diseases. OBJECTIVE The objective of the study was to clarify the in vitro effects of 1,25-dihydroxy vitamin D3 (1,25[OH]2D3) on human endometriotic stromal cells (ESCs) and to determine the serum levels of VD in endometriosis patients. DESIGN, PATIENTS, AND MAIN OUTCOME MEASURES ESCs were isolated from ovarian endometrioma and cultured with 1,25(OH)2D3. Gene expression of IL-8, cyclooxygenase-2, microsomal prostaglandin E synthase-1, microsomal prostaglandin E synthase-2, cytosolic prostaglandin E synthase, 15-hydroxyprostaglandin dehydrogenase, matrix metalloproteinase (MMP)-2, and MMP-9 was examined using quantitative RT-PCR. The production of IL-8 and prostaglandin E2 was measured using an ELISA and an enzyme immunoassay. Viable cell number was assessed using a cell-counting assay, and DNA synthesis was assessed using the bromodeoxyuridine incorporation assay. Apoptosis was assessed using flow cytometry. The expression of inhibitory-κBα protein was detected using Western blotting. The serum levels of 25-hydroxyvitamin D3 and 1,25(OH)2D3 were measured by a RIA. RESULTS In vitro studies showed that 1,25(OH)2D3 significantly reduced IL-1β- or TNF-α-induced inflammatory responses, such as IL-8 expression and prostaglandin activity. 1,25(OH)2D3 also reduced viable ESC numbers and DNA synthesis but did not affect apoptosis. MMP-2 and MMP-9 expressions were reduced by 1,25(OH)2D3. 1,25(OH)2D3 inhibited nuclear factor-κB activation. The serum 25-hydroxyvitamin D3 levels were significantly lower in women with severe endometriosis than in the controls and women with mild endometriosis. Serum 1,25(OH)2D3 levels were not different between groups. CONCLUSIONS VD modulates inflammation and proliferation in endometriotic cells, and a lower VD status is associated with endometriosis. Taken together, VD supplementation could be a novel therapeutic strategy for managing endometriosis.
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Affiliation(s)
- Mariko Miyashita
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Kaori Koga
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Gentaro Izumi
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Fusako Sue
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Tomoko Makabe
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Ayumi Taguchi
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Miwako Nagai
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Yoko Urata
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Masashi Takamura
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Miyuki Harada
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Tetsuya Hirata
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Yasushi Hirota
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Osamu Wada-Hiraike
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Tomoyuki Fujii
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
| | - Yutaka Osuga
- Department of Obstetrics and Gynecology, University of Tokyo, Tokyo 113-8655, Japan
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462
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Vitamin D-Regulated MicroRNAs: Are They Protective Factors against Dengue Virus Infection? Adv Virol 2016; 2016:1016840. [PMID: 27293435 PMCID: PMC4879221 DOI: 10.1155/2016/1016840] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 04/07/2016] [Accepted: 04/20/2016] [Indexed: 12/19/2022] Open
Abstract
Over the last few years, an increasing body of evidence has highlighted the critical participation of vitamin D in the regulation of proinflammatory responses and protection against many infectious pathogens, including viruses. The activity of vitamin D is associated with microRNAs, which are fine tuners of immune activation pathways and provide novel mechanisms to avoid the damage that arises from excessive inflammatory responses. Severe symptoms of an ongoing dengue virus infection and disease are strongly related to highly altered production of proinflammatory mediators, suggesting impairment in homeostatic mechanisms that control the host's immune response. Here, we discuss the possible implications of emerging studies anticipating the biological effects of vitamin D and microRNAs during the inflammatory response, and we attempt to extrapolate these findings to dengue virus infection and to their potential use for disease management strategies.
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463
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Patterns of Transcriptional Response to 1,25-Dihydroxyvitamin D3 and Bacterial Lipopolysaccharide in Primary Human Monocytes. G3-GENES GENOMES GENETICS 2016; 6:1345-55. [PMID: 26976439 PMCID: PMC4856085 DOI: 10.1534/g3.116.028712] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The active form of vitamin D, 1,25-dihydroxyvitamin D3 (1,25D), plays an important immunomodulatory role, regulating transcription of genes in the innate and adaptive immune system. The present study examines patterns of transcriptome-wide response to 1,25D, and the bacterial lipopolysaccharide (LPS) in primary human monocytes, to elucidate pathways underlying the effects of 1,25D on the immune system. Monocytes obtained from healthy individuals of African-American and European-American ancestry were treated with 1,25D, LPS, or both, simultaneously. The addition of 1,25D during stimulation with LPS induced significant upregulation of genes in the antimicrobial and autophagy pathways, and downregulation of proinflammatory response genes compared to LPS treatment alone. A joint Bayesian analysis enabled clustering of genes into patterns of shared transcriptional response across treatments. The biological pathways enriched within these expression patterns highlighted several mechanisms through which 1,25D could exert its immunomodulatory role. Pathways such as mTOR signaling, EIF2 signaling, IL-8 signaling, and Tec Kinase signaling were enriched among genes with opposite transcriptional responses to 1,25D and LPS, respectively, highlighting the important roles of these pathways in mediating the immunomodulatory activity of 1,25D. Furthermore, a subset of genes with evidence of interethnic differences in transcriptional response was also identified, suggesting that in addition to the well-established interethnic variation in circulating levels of vitamin D, the intensity of transcriptional response to 1,25D and LPS also varies between ethnic groups. We propose that dysregulation of the pathways identified in this study could contribute to immune-mediated disease risk.
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464
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Assessment of serum levels of cathelicidin and vitamin D in acne vulgaris. JOURNAL OF THE EGYPTIAN WOMEN’S DERMATOLOGIC SOCIETY 2016. [DOI: 10.1097/01.ewx.0000480714.99599.84] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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465
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Rodríguez AJ, Scott D, Srikanth V, Ebeling P. Effect of vitamin D supplementation on measures of arterial stiffness: a systematic review and meta-analysis of randomized controlled trials. Clin Endocrinol (Oxf) 2016; 84:645-57. [PMID: 26824510 DOI: 10.1111/cen.13031] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 11/13/2015] [Accepted: 01/24/2016] [Indexed: 01/09/2023]
Abstract
BACKGROUND Low vitamin D has been associated with poor arterial compliance in observational studies. Arterial stiffness has prognostic value for cardiovascular disease risk. The aim of this systematic review was to clarify the literature surrounding the use of vitamin D to ameliorate arterial stiffness. METHODS We conducted a systematic review of the MEDLINE, Scopus and EMBASE databases for randomized controlled clinical trials investigating the effect of vitamin D supplementation on pulse wave velocity (PWV) and/or augmentation index (AI) as indicators of arterial stiffness. We meta-analysed data and calculated standardized mean difference (SMD) and 95% confidence intervals (CI) using inverse-variance models on RevMan v5.3 software. Study quality was assessed using a modified Jadad scale. RESULTS A total of 607 unique records were identified, of which 18 satisfied our inclusion and exclusion criteria. Study quality was high, ranging from 9 to 12 (of 13). Study design in terms of vitamin D dosing protocol (range: 1000-5700 IU/day), follow-up times (range: 1-12 months), sample size (range: n = 29-183) and recruitment strategies varied markedly. Thirteen studies had data for meta-analysis. Vitamin D was associated with nonsignificant reductions in PWV [SMD = -0·10; 95% CI: -0·24, 0·04; P = 0·17; n = 806 from ten studies] and AI [-0·15; -0·32, 0·02; 0·08; n = 551 from eight studies]. DISCUSSION There is inconsistent evidence to suggest that vitamin D supplementation improves indicators of arterial stiffness. This may be attributable to the heterogeneity in study design. Therefore, large and well-designed randomized studies are required to determine the casual relationships between vitamin D and arterial stiffness and cardiovascular risk.
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Affiliation(s)
- Alexander J Rodríguez
- Bone and Muscle Health Research Group, Department of Medicine, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, Vic., Australia
| | - David Scott
- Melbourne Medical School (Western Campus), Department of Medicine, The University of Melbourne, St Albans, Vic., Australia
| | - Velandai Srikanth
- Stroke and Ageing Research Group, Department of Medicine, School of Clinical Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, Vic., Australia
| | - Peter Ebeling
- Melbourne Medical School (Western Campus), Department of Medicine, The University of Melbourne, St Albans, Vic., Australia
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466
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Onur H, Aral H, Arica V, Bercem GA, Kasapcopur O. Vitamin D levels in children with familial Mediterranean fever. Pediatr Rheumatol Online J 2016; 14:28. [PMID: 27121284 PMCID: PMC4848823 DOI: 10.1186/s12969-016-0089-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 04/25/2016] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND This study aimed to determine whether vitamin D deficiency is more common in children with familial Mediterranean fever (FMF) than in healthy individuals. METHODS The study group consisted of 100 patients diagnosed with FMF and 50 healthy children. Serum baseline 25-hydroxyvitamin D levels and other related parameters were evaluated. RESULTS The mean (standard deviation [SD]) vitamin D levels in patients with FMF and healthy controls were 24.78 (8.35) and 28.70 (11.70) ng/mL, respectively. Patients with FMF had significantly decreased vitamin D levels compared with those in healthy controls (P = 0.039). Vitamin D levels were similar in patients with FMF with different MEFV mutations (P = 0.633). Age was significantly correlated with vitamin D levels (r = -0.235, P = 0.019). In addition, a negative correlation between parathyroid hormone and vitamin D levels was detected (rs = -0.382, P < 0.0001). CONCLUSION This study demonstrated that vitamin D levels are lower in children with FMF than in healthy controls. We speculate that vitamin D levels should be carefully examined, and nutritional supplementation may be required in patients with FMF. Further studies with larger patient populations are needed to confirm the frequency of vitamin D deficiency in patients with FMF.
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Affiliation(s)
- Hatice Onur
- Department of Pediatrics, Bursa Yuksek Ihtisas Training and Research Hospital, 152 Evler, Prof. Tezok street No: 2, Yıldırım/Bursa, Istanbul, Turkey.
| | - Hale Aral
- Department of Biochemistry, Istanbul Training and Research Hospital, Istanbul, Turkey
| | - Vefik Arica
- Department of Pediatrics, Yeniyuzyıl University, Gaziosmanpasa Hospital, Istanbul, Turkey
| | - Gamze Atalay Bercem
- Department of Pediatrics, Bursa Yuksek Ihtisas Training and Research Hospital, 152 Evler, Prof. Tezok street No: 2, Yıldırım/Bursa, Istanbul, Turkey
| | - Ozgur Kasapcopur
- Department of Pediatrics Rheumatology, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey
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467
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Vitamin D deficiency and depression among women from an urban community in a tropical country. Public Health Nutr 2016; 20:1844-1850. [DOI: 10.1017/s1368980016000811] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
AbstractObjectiveTo determine the association of vitamin D status with depression and health-related quality of life among women.DesignThis was a cross-sectional study conducted among women in Kuala Lumpur, Malaysia. Sociodemographic characteristics, physical activity status, perceived depression and health-related quality of life were assessed via a self-administered questionnaire. Fasting blood samples were taken for the analysis of 25-hydroxyvitamin D, parathyroid hormone, fasting blood glucose and full lipid profile. Complex samples multiple logistic regression analysis was performed.SettingPublic secondary schools in Kuala Lumpur, Malaysia.SubjectsSeven hundred and seventy female teachers were included.ResultsThe mean age of participants was 41·15 (95 % CI 40·51, 41·78) years and the majority were ethnic Malays. Over 70 % of them had vitamin D deficiency (<20 ng/ml or <50 nmol/l) and two-thirds were at risk for depression. In the multivariate analysis, ethnic Malays (adjusted OR (aOR)=14·72; 95 % CI 2·12, 102·21) and Indians (aOR=14·02; 95 % CI 2·27, 86·59), those at risk for depression (aOR=1·88, 95 % CI 1·27, 2·79) and those with higher parathyroid hormone level (aOR=1·13; 95 % CI 1·01, 1·26) were associated with vitamin D deficiency, while vitamin D deficiency was negatively associated with mental health-related quality of life (Mental Component Summary) scores (aOR=0·98; 95 % CI 0·97, 0·99).ConclusionsVitamin D deficiency is significantly associated with depression and mental health-related quality of life among women in Kuala Lumpur, Malaysia.
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468
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Morin G, Orlando V, St-Martin Crites K, Patey N, Mailhot G. Vitamin D attenuates inflammation in CFTR knockdown intestinal epithelial cells but has no effect in cells with intact CFTR. Am J Physiol Gastrointest Liver Physiol 2016; 310:G539-49. [PMID: 26893158 DOI: 10.1152/ajpgi.00060.2015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 01/31/2016] [Indexed: 01/31/2023]
Abstract
The cystic fibrosis (CF) intestine is characterized by chronic inflammation. CF patients are instructed to ingest supplemental vitamin D on a daily basis thereby exposing their intestinal tract to pharmacological amounts of this vitamin. It has been shown that vitamin D exerts intestinal anti-inflammatory properties. We therefore postulate that vitamin D may be beneficial in the management of CF intestinal inflammation by attenuating cellular inflammatory responses. In this study, we investigated the anti-inflammatory effects of the oral form of vitamin D3 (cholecalciferol) and its metabolites, 25-hydroxyvitamin D3 and 1,25-dihydroxyvitamin D3, on cytokine-induced inflammatory responses in intestinal epithelial Caco-2/15 cells with intact expression of CF transmembrane conductance regulator (CFTR) and knockdown for CFTR. We show that 25-hydroxyvitamin D3 and 1,25-dihydroxyvitamin D3 inhibited p38MAPK phosphorylation and that these effects were not mediated by changes in the expression of MAPK phosphatase-1 (MKP-1). However, 1,25-dihydroxyvitamin D3 exhibited superior anti-inflammatory effects as it furthermore reduced cytokine-induced NF-κB nuclear translocation and interleukin-8 mRNA stability and secretion. Intriguingly, the anti-inflammatory effects of vitamin D metabolites were only observed in CFTR knockdown cells, which may be explained by alterations in its catabolism associated with changes in CYP24A1 expression. These observations were supported in vivo whereby Cftr(-/-) mice fed large amounts of vitamin D3 for 2 mo led to a reduction in the number of eosinophils and apoptotic cells in the duodenal mucosa of females but not males. Altogether, these findings suggest that vitamin D exerts intestinal anti-inflammatory actions under specific circumstances and may thus prove beneficial in CF.
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Affiliation(s)
- Geneviève Morin
- Research Centre, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec, Canada; and
| | - Valérie Orlando
- Research Centre, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec, Canada; and
| | | | - Natacha Patey
- Research Centre, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec, Canada; and
| | - Geneviève Mailhot
- Research Centre, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec, Canada; and Department of Nutrition, Université de Montréal, Montréal, Quebec, Canada
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469
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Lower prenatal vitamin D status and postpartum depressive symptomatology in African American women: Preliminary evidence for moderation by inflammatory cytokines. Arch Womens Ment Health 2016; 19:373-83. [PMID: 26407996 PMCID: PMC4801760 DOI: 10.1007/s00737-015-0585-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 09/14/2015] [Indexed: 02/06/2023]
Abstract
Vitamin D deficiency and elevated pro-inflammatory cytokines have each been associated individually with postpartum depression (PPD). African American women are at increased risk for prenatal vitamin D deficiency, inflammation, and prenatal and postpartum depressive symptoms, but biological risk factors for PPD in this population have rarely been tested. This prospective study tested whether low prenatal vitamin D status (serum 25-hydroxyvitamin D, 25[OH]D) predicted PPD symptomatology in pregnant African American women and whether high levels of prenatal inflammatory cytokines interacted with low 25(OH)D in effects on PPD symptoms. Vitamin D status was measured in the first trimester in a sample of 91 African American pregnant women who had a second trimester blood sample assayed for inflammatory markers. Depressive symptoms were assessed at a postpartum visit. An inverse association between prenatal log 25(OH)D and PPD symptomatology approached significance (β = -0.209, p = 0.058), and interleukin-6 and IL-6/IL-10 ratio significantly moderated the effect. Among women with higher levels of inflammatory markers, lower prenatal log 25(OH)D was associated with significantly higher PPD symptoms (p < 0.05). These preliminary results are intriguing because, if replicable, easy translational opportunities, such as increasing vitamin D status in pregnant women with elevated pro-inflammatory cytokines, may reduce PPD symptoms.
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470
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Mendy A, Cohn RD, Thorne PS. Endotoxin exposure, serum vitamin D, asthma and wheeze outcomes. Respir Med 2016; 114:61-6. [PMID: 27109812 DOI: 10.1016/j.rmed.2016.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 03/04/2016] [Accepted: 03/08/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND Endotoxin has been shown to induce neutrophilic asthma and wheeze after binding toll-like receptor 4 to produce pro-inflammatory cytokines. Animal models have demonstrated that vitamin D might inhibit lipopolysaccharide-induced cytokines. However, whether endotoxin exposure and serum vitamin D deficiency interact to affect asthma and wheeze in humans has never been investigated in an epidemiological study. METHODS Joint associations of house dust endotoxin and vitamin D with asthma and wheeze were examined using logistic regression adjusted for covariates in 5924 US participants of the National Health and Nutrition Examination Survey (NHANES). Interactions were assessed on the multiplicative as well as additive scale using the relative excess risk, the attributable portion due to additive interaction, and the synergy index. RESULTS The median endotoxin concentration was 19.1 EU/mg. Prevalence of vitamin D inadequacy (20-30 ng/ml) and deficiency (<20 ng/ml) were respectively 42.9 and 33.4%. The combination of high endotoxin and low vitamin D was associated with current asthma (OR: 1.56, 95% CI: 1.09, 2.23), wheeze in the past 12 months (OR: 1.72, 95% CI: 1.10, 3.71), recurrent wheeze (OR: 1.97, 95% CI: 1.00, 4.00), asthma diagnosis or recurrent wheeze (OR: 1.88, 95% CI: 1.33, 2.66), and current asthma or recurrent wheeze (OR:1.81, 95% CI: 1.23, 2.68) when compared to low endotoxin and normal vitamin D. The interactions between the exposures were not significant on the multiplicative or additive scale for any of the outcomes. CONCLUSIONS Combination of high endotoxin exposure and low vitamin D increases the odds of asthma and wheeze, but the exposures do not interact or modify each other's effect in the NHANES cohort.
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Affiliation(s)
- Angelico Mendy
- Department of Occupational and Environmental Health, University of Iowa, Iowa City, IA, USA
| | | | - Peter S Thorne
- Department of Occupational and Environmental Health, University of Iowa, Iowa City, IA, USA.
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471
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Chen S, Villalta A, Agrawal DK. FOXO1 Mediates Vitamin D Deficiency-Induced Insulin Resistance in Skeletal Muscle. J Bone Miner Res 2016; 31:585-95. [PMID: 26462119 PMCID: PMC4814301 DOI: 10.1002/jbmr.2729] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 09/25/2015] [Accepted: 10/08/2015] [Indexed: 02/06/2023]
Abstract
Prospective epidemiological studies have consistently shown a relationship between vitamin D deficiency, insulin resistance, and type 2 diabetes mellitus (DM2). This is supported by recent trials showing that vitamin D supplementation in prediabetic or insulin-resistant patients with inadequate vitamin D levels improves insulin sensitivity. However, the molecular mechanisms underlying vitamin D deficiency-induced insulin resistance and DM2 remain unknown. Skeletal muscle insulin resistance is a primary defect in the majority of patients with DM2. Although sustained activation of forkhead box O1 (FOXO1) in skeletal muscle causes insulin resistance, a relationship between vitamin D deficiency and FOXO1 activation in muscle is unknown. We generated skeletal muscle-specific vitamin D receptor (VDR)-null mice and discovered that these mice developed insulin resistance and glucose intolerance accompanied by increased expression and activity of FOXO1. We also found sustained FOXO1 activation in the skeletal muscle of global VDR-null mice. Treatment of C2C12 muscle cells with 1,25-dihydroxyvitamin D (VD3) reduced FOXO1 expression, nuclear translocation, and activity. The VD3-dependent suppression of FOXO1 activation disappeared by knockdown of VDR, indicating that it is VDR-dependent. Taken together, these results suggest that FOXO1 is a critical target mediating VDR-null signaling in skeletal muscle. The novel findings provide the conceptual support that persistent FOXO1 activation may be responsible for insulin resistance and impaired glucose metabolism in vitamin D signaling-deficient mice, as well as evidence for the utility of vitamin D supplementation for intervention in DM2.
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Affiliation(s)
- Songcang Chen
- Center for Clinical & Translational Science, Creighton University School of Medicine, Omaha NE 68178 USA
| | - Armando Villalta
- Diabetes Center, University of California San Francisco, CA 94143 USA
| | - Devendra K. Agrawal
- Center for Clinical & Translational Science, Creighton University School of Medicine, Omaha NE 68178 USA
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472
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Batai K, Murphy AB, Nonn L, Kittles RA. Vitamin D and Immune Response: Implications for Prostate Cancer in African Americans. Front Immunol 2016; 7:53. [PMID: 26941739 PMCID: PMC4761841 DOI: 10.3389/fimmu.2016.00053] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 02/04/2016] [Indexed: 12/13/2022] Open
Abstract
Prostate cancer (PCa) is the most common cancer among men in the U.S. African American (AA) men have a higher incidence and mortality rate compared to European American (EA) men, but the cause of PCa disparities is still unclear. Epidemiologic studies have shown that vitamin D deficiency is associated with advanced stage and higher tumor grade and mortality, while its association with overall PCa risk is inconsistent. Vitamin D deficiency is also more common in AAs than EAs, and the difference in serum vitamin D levels may help explain the PCa disparities. However, the role of vitamin D in aggressive PCa in AAs is not well explored. Studies demonstrated that the active form of vitamin D, 1,25-dihydroxyvitamin D, has anti-inflammatory effects by mediating immune-related gene expression in prostate tissue. Inflammation also plays an important role in PCa pathogenesis and progression, and expression of immune-related genes in PCa tissues differs significantly between AAs and EAs. Unfortunately, the evidence linking vitamin D and immune response in relation to PCa is still scarce. This relationship should be further explored at a genomic level in AA populations that are at high risk for vitamin D deficiency and fatal PCa.
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Affiliation(s)
- Ken Batai
- Division of Urology, Department of Surgery, The University of Arizona , Tucson, AZ , USA
| | - Adam B Murphy
- Department of Urology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA; Jesse Brown Veterans Affairs Medical Center, Chicago, IL, USA
| | - Larisa Nonn
- Department of Pathology, University of Illinois at Chicago , Chicago, IL , USA
| | - Rick A Kittles
- Division of Urology, Department of Surgery, The University of Arizona , Tucson, AZ , USA
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473
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Fitch N, Becker AB, HayGlass KT. Vitamin D [1,25(OH)2D3] Differentially Regulates Human Innate Cytokine Responses to Bacterial versus Viral Pattern Recognition Receptor Stimuli. THE JOURNAL OF IMMUNOLOGY 2016; 196:2965-72. [PMID: 26895836 DOI: 10.4049/jimmunol.1500460] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 01/20/2016] [Indexed: 12/19/2022]
Abstract
Vitamin D plays multiple roles in regulation of protective and maladaptive immunity. Although epidemiologic studies link poor in vivo 25(OH)D status to increased viral respiratory infections, we poorly understand how vitamin D affects viral pattern recognition receptor (PRR)-driven cytokine production. In this study, we hypothesized that the biologically active metabolite of vitamin D, 1,25(OH)2D3, inhibits human proinflammatory and anti-inflammatory innate cytokine responses stimulated by representative bacterial or viral PRR ligands. Fresh PBMCs or CD14(+) monocytes were stimulated with TLR4, TLR7/8-selective ligands, or respiratory syncytial virus (RSV) ± 1,25(OH)2D3. Proinflammatory and anti-inflammatory responses resulting from TLR4 stimulation were inhibited ∼50% in the presence of 1,25(OH)2D3. Conversely, its usage at physiologic through pharmacologic concentrations inhibited neither proinflammatory nor anti-inflammatory responses evoked by viral PRR ligands or infectious RSV. This differential responsiveness was attributed to the finding that TLR7/8, but not TLR4, stimulation markedly inhibited vitamin D receptor mRNA and protein expression, selectively reducing the sensitivity of viral PRR responses to modulation. 1,25(OH)2D3 also enhanced expression of IkBa, a potent negative regulator of NF-κB and cytokine production, in TLR4-stimulated monocytes while not doing so upon TLR7/8 stimulation. Thus, 1,25(OH)2D3 inhibits both proinflammatory and a broad panel of anti-inflammatory responses elicited by TLR4 stimulation, arguing that the common view of it as an anti-inflammatory immune response modifier is an oversimplification. In viral responses, it consistently fails to modify TLR7/8- or RSV-stimulated innate cytokine production, even at supraphysiologic concentrations. Collectively, the data call into question the rationale for increasingly widespread self-medication with vitamin D supplements.
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Affiliation(s)
- Natascha Fitch
- Department of Immunology, Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Manitoba R3E 0T5, Canada; and
| | - Allan B Becker
- Department of Immunology, Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Manitoba R3E 0T5, Canada; and Department of Pediatrics and Child Health, Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Manitoba R3E 0T5, Canada
| | - Kent T HayGlass
- Department of Immunology, Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Manitoba R3E 0T5, Canada; and Department of Pediatrics and Child Health, Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Manitoba R3E 0T5, Canada
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474
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Pannu PK, Calton EK, Soares MJ. Calcium and Vitamin D in Obesity and Related Chronic Disease. ADVANCES IN FOOD AND NUTRITION RESEARCH 2016; 77:57-100. [PMID: 26944102 DOI: 10.1016/bs.afnr.2015.11.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
There is a pandemic of lifestyle-related diseases. In both developed and lesser developed countries of the world, an inadequacy of calcium intake and low vitamin D status is common. In this chapter, we explore a mechanistic framework that links calcium and vitamin D status to chronic conditions including obesity, systemic inflammation, endothelial dysfunction, dyslipidemia and cardiovascular disease, and type 2 diabetes mellitus. We also update the available clinical evidence, mainly from randomized controlled trials, to provide a synthesis of evidence in favor or against these hypotheses. There is consistent data to support calcium increasing whole body fat oxidation and increasing fecal fat excretion, while there is good cellular evidence for vitamin D reducing inflammation. Clinical trials support a marginal reduction in circulating lipids and some meta-analysis support an increase in insulin sensitivity following vitamin D. However, these mechanistic pathways and intermediate biomarkers of disease do not consistently transcribe into measurable health outcomes. Cementing the benefits of calcium and vitamin D for extraskeletal health needs a reexamination of the target 25(OH)D level to be achieved and the minimum duration of future trials.
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Affiliation(s)
- Poonam K Pannu
- School of Public Health, Curtin Health Innovation Research Institute-Metabolic Health, Faculty of Health Sciences, Curtin University, Perth, WA, Australia
| | - Emily K Calton
- School of Public Health, Curtin Health Innovation Research Institute-Metabolic Health, Faculty of Health Sciences, Curtin University, Perth, WA, Australia
| | - Mario J Soares
- School of Public Health, Curtin Health Innovation Research Institute-Metabolic Health, Faculty of Health Sciences, Curtin University, Perth, WA, Australia.
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475
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Chiang M, Natarajan R, Fan X. Vitamin D in schizophrenia: a clinical review. EVIDENCE-BASED MENTAL HEALTH 2016; 19:6-9. [PMID: 26767392 PMCID: PMC10699337 DOI: 10.1136/eb-2015-102117] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 12/17/2015] [Accepted: 12/22/2015] [Indexed: 01/08/2023]
Abstract
Vitamin D (vitD) is known for its essential role in calcium homeostasis and bone health. VitD is made endogenously in the skin from UVB radiation from sunlight. VitD is now considered as a potent neurosteroid hormone, critical to brain development and normal brain function, and is known for its anti-inflammatory property affecting various aspects of human health. VitD ligand-receptor, a receptor that mediates much of vitD's biological actions, has been found throughout the body including the central nervous system. VitD deficiency is common in patients with severe mental illness such as schizophrenia. Schizophrenia is a debilitating chronic mental illness characterised by positive symptoms, such as hallucinations and delusions, and negative symptoms including flat affect and lack of motivation. Several environmental risk factors for schizophrenia, such as season of birth, latitude and migration, have been linked to vitD deficiency. Recent studies have suggested a potential role of vitD in the development of schizophrenia. For example, neonatal vitD status is associated with the risk of developing schizophrenia in later life obesity, insulin resistance, diabetes, hyperlipidaemia and cardiovascular disease, which are commonly seen in patients with schizophrenia. It has been well established that vitD deficiency is related to these metabolic problems. The biological mechanism is most likely related to vitD's action on the regulation of inflammatory and immunological processes, consequently affecting the manifestation of clinical symptoms and treatment response of schizophrenia. Potential benefits of vitD supplementation to improve schizophrenia symptoms as well as physical health in patients with schizophrenia should be further explored in future studies.
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Affiliation(s)
- Mathew Chiang
- Psychotic Disorders Program, UMass Memorial Medical Center, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Radhika Natarajan
- Psychotic Disorders Program, UMass Memorial Medical Center, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Xiaoduo Fan
- Psychotic Disorders Program, UMass Memorial Medical Center, University of Massachusetts Medical School, Worcester, Massachusetts, USA
- Henan Province Mental Hospital, The Second Affiliated Hospital/Xinxiang Medical University, Xinxiang, China
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476
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Thomas FC, Mudaliar M, Tassi R, McNeilly TN, Burchmore R, Burgess K, Herzyk P, Zadoks RN, Eckersall PD. Mastitomics, the integrated omics of bovine milk in an experimental model of Streptococcus uberis mastitis: 3. Untargeted metabolomics. MOLECULAR BIOSYSTEMS 2016; 12:2762-9. [DOI: 10.1039/c6mb00289g] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Metabolomic investigation of milk from cows with bovine mastitis has revealed major changes in carbohydrates, lipids, amino acids, nucleotides and bile acids.
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Affiliation(s)
- Funmilola Clara Thomas
- Institute of Biodiversity Animal Health and Comparative Medicine
- University of Glasgow
- Glasgow
- UK
| | - Manikhandan Mudaliar
- Institute of Biodiversity Animal Health and Comparative Medicine
- University of Glasgow
- Glasgow
- UK
- Glasgow Polyomics
| | | | | | - Richard Burchmore
- Glasgow Polyomics
- College of Medical
- Veterinary and Life Science
- University of Glasgow
- Glasgow
| | - Karl Burgess
- Glasgow Polyomics
- College of Medical
- Veterinary and Life Science
- University of Glasgow
- Glasgow
| | - Pawel Herzyk
- Glasgow Polyomics
- College of Medical
- Veterinary and Life Science
- University of Glasgow
- Glasgow
| | - Ruth N. Zadoks
- Institute of Biodiversity Animal Health and Comparative Medicine
- University of Glasgow
- Glasgow
- UK
- Moredun Research Institute
| | - P. David Eckersall
- Institute of Biodiversity Animal Health and Comparative Medicine
- University of Glasgow
- Glasgow
- UK
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477
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Yao S, Haddad SA, Hu Q, Liu S, Lunetta KL, Ruiz-Narvaez EA, Hong CC, Zhu Q, Sucheston-Campbell L, Cheng TYD, Bensen JT, Johnson CS, Trump DL, Haiman CA, Olshan AF, Palmer JR, Ambrosone CB. Genetic variations in vitamin D-related pathways and breast cancer risk in African American women in the AMBER consortium. Int J Cancer 2015; 138:2118-26. [PMID: 26650177 DOI: 10.1002/ijc.29954] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 11/19/2015] [Accepted: 11/20/2015] [Indexed: 01/08/2023]
Abstract
Studies of genetic variations in vitamin D-related pathways and breast cancer risk have been conducted mostly in populations of European ancestry, and only sparsely in African Americans (AA), who are known for a high prevalence of vitamin D deficiency. We analyzed 24,445 germline variants in 63 genes from vitamin D-related pathways in the African American Breast Cancer Epidemiology and Risk (AMBER) consortium, including 3,663 breast cancer cases and 4,687 controls. Odds ratios (OR) were derived from logistic regression models for overall breast cancer, by estrogen receptor (ER) status (1,983 ER positive and 1,098 ER negative), and for case-only analyses of ER status. None of the three vitamin D-related pathways were associated with breast cancer risk overall or by ER status. Gene-level analyses identified associations with risk for several genes at a nominal p ≤ 0.05, particularly for ER- breast cancer, including rs4647707 in DDB2. In case-only analyses, vitamin D metabolism and signaling pathways were associated with ER- cancer (pathway-level p = 0.02), driven by a single gene CASR (gene-level p = 0.001). The top SNP in CASR was rs112594756 (p = 7 × 10(-5), gene-wide corrected p = 0.01), followed by a second signal from a nearby SNP rs6799828 (p = 1 × 10(-4), corrected p = 0.03). In summary, several variants in vitamin D pathways were associated with breast cancer risk in AA women. In addition, CASR may be related to tumor ER status, supporting a role of vitamin D or calcium in modifying breast cancer phenotypes.
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Affiliation(s)
- Song Yao
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY
| | | | - Qiang Hu
- Department of Biostatistics and Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY
| | - Song Liu
- Department of Biostatistics and Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY
| | - Kathryn L Lunetta
- Department of Biostatistics, Boston University School of Public Health, Boston, MA
| | | | - Chi-Chen Hong
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY
| | - Qianqian Zhu
- Department of Biostatistics and Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY
| | | | - Ting-Yuan David Cheng
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY
| | - Jeannette T Bensen
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Candace S Johnson
- Department of Pharmacology and Therapeutics, Roswell Park Cancer Institute, Buffalo, NY
| | | | - Christopher A Haiman
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, Los Angeles, CA
| | - Andrew F Olshan
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Julie R Palmer
- Slone Epidemiology Center at Boston University, Boston, MA
| | - Christine B Ambrosone
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY
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478
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Vitamin D3 pretreatment regulates renal inflammatory responses during lipopolysaccharide-induced acute kidney injury. Sci Rep 2015; 5:18687. [PMID: 26691774 PMCID: PMC4686931 DOI: 10.1038/srep18687] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 11/23/2015] [Indexed: 01/19/2023] Open
Abstract
Vitamin D receptor (VDR) is highly expressed in human and mouse kidneys. Nevertheless, its functions remain obscure. This study investigated the effects of vitamin D3 (VitD3) pretreatment on renal inflammation during lipopolysaccharide (LPS)-induced acute kidney injury. Mice were intraperitoneally injected with LPS. In VitD3 + LPS group, mice were pretreated with VitD3 (25 μg/kg) at 48, 24 and 1 h before LPS injection. As expected, an obvious reduction of renal function and pathological damage was observed in LPS-treated mice. VitD3 pretreatment significantly alleviated LPS-induced reduction of renal function and pathological damage. Moreover, VitD3 pretreatment attenuated LPS-induced renal inflammatory cytokines, chemokines and adhesion molecules. In addition, pretreatment with 1,25(OH)2D3, the active form of VitD3, alleviated LPS-induced up-regulation of inflammatory cytokines and chemokines in human HK-2 cells, a renal tubular epithelial cell line, in a VDR-dependent manner. Further analysis showed that VitD3, which activated renal VDR, specifically repressed LPS-induced nuclear translocation of nuclear factor kappa B (NF-κB) p65 subunit in the renal tubules. LPS, which activated renal NF-κB, reciprocally suppressed renal VDR and its target gene. Moreover, VitD3 reinforced the physical interaction between renal VDR and NF-κB p65 subunit. These results provide a mechanistic explanation for VitD3-mediated anti-inflammatory activity during LPS-induced acute kidney injury.
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479
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Wang K, Huang RJ, Wu HG, Liu HR, Wang SS, Zhao JM, Huang Y, Lin XY, Wu LY. Mechanisms of action of vitamin D in inflammatory bowel disease. Shijie Huaren Xiaohua Zazhi 2015; 23:5655-5661. [DOI: 10.11569/wcjd.v23.i35.5655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a complex chronic inflammatory disorder caused by the interaction of environmental, hereditary and immune factors. The etiology and pathogenesis of IBD remain unveiled. In recent years, growing attention has been paid to the role of vitamin D in immune-related diseases like IBD from traditional bone metabolism. Vitamin D not only participates in calcium and phosphorus metabolism but also alleviates IBD via regulating the immune cell factors, inducing antimicrobial peptide expression and maintaining the integrity of intestinal mucosal barrier. In view of anti-inflammatory and immunomodulatory activities of vitamin D, this article discusses its role in IBD.
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480
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Luo J, Liu D, Liu CT. Can Vitamin D Supplementation in Addition to Asthma Controllers Improve Clinical Outcomes in Patients With Asthma?: A Meta-Analysis. Medicine (Baltimore) 2015; 94:e2185. [PMID: 26683927 PMCID: PMC5058899 DOI: 10.1097/md.0000000000002185] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Effects of vitamin D on acute exacerbation, lung function, and fraction of exhaled nitric oxide (FeNO) in patients with asthma are controversial. We aim to further evaluate the roles of vitamin D supplementation in addition to asthma controllers in asthmatics. From 1946 to July 2015, we searched the PubMed, Embase, Medline, Cochrane Central Register of Controlled Trials, and ISI Web of Science using "Vitamin D," "Vit D," or "VitD" and "asthma," and manually reviewed the references listed in the identified articles. Randomized controlled trials which reported rate of asthma exacerbations and adverse events, forced expiratory volume in 1 s (FEV1, % of predicted value), FeNO, asthma control test (ACT), and serum 25-hydroxyvitamin D levels were eligible. We conducted the heterogeneities test and sensitivity analysis of the enrolled studies, and random-effects or fixed-effects model was applied to calculate risk ratio (RR) and mean difference for dichotomous and continuous data, respectively. Cochrane systematic review software Review Manager (RevMan) was used to test the hypothesis by Mann-Whitney U test, which were displayed in Forest plots. Seven trials with a total of 903 patients with asthma were pooled in our final studies. Except for asthma exacerbations (I2 = 81%, χ2 = 10.28, P = 0.006), we did not find statistical heterogeneity in outcome measures. The pooled RR of asthma exacerbation was 0.66 (95% confidence interval: 0.32-1.37), but without significant difference (z = 1.12, P = 0.26), neither was in FEV1 (z = 0.30, P = 0.77), FeNO (z = 0.28, P = 0.78), or ACT (z = 0.92, P = 0.36), although serum 25-hydroxyvitamin D was significantly increased (z = 6.16, P < 0.001). Vitamin D supplementation in addition to asthma controllers cannot decrease asthma exacerbation and FeNO, nor improve lung function and asthma symptoms, although it can be safely applied to increase serum 25-hydroxyvitamin D levels.
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Affiliation(s)
- Jian Luo
- From the Departments of Respiratory Medicine (JL, C-TL) and Critical Care Medicine (DL), West China School of Medicine and West China Hospital, Sichuan University, Chengdu, China
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481
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Inverse Correlation between Vitamin D and C-Reactive Protein in Newborns. Nutrients 2015; 7:9218-28. [PMID: 26569292 PMCID: PMC4663596 DOI: 10.3390/nu7115468] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 10/29/2015] [Accepted: 11/02/2015] [Indexed: 12/21/2022] Open
Abstract
Some studies suggested that adequate vitamin D might reduce inflammation in adults. However, little is known about this association in early life. We aimed to determine the relationship between cord blood 25-hydroxyvitamin D (25(OH)D) and C-reactive protein (CRP) in neonates. Cord blood levels of 25(OH)D and CRP were measured in 1491 neonates in Hefei, China. Potential confounders including maternal sociodemographic characteristics, perinatal health status, lifestyle, and birth outcomes were prospectively collected. The average values of cord blood 25(OH)D and CRP were 39.43 nmol/L (SD = 20.35) and 6.71 mg/L (SD = 3.07), respectively. Stratified by 25(OH)D levels, per 10 nmol/L increase in 25(OH)D, CRP decreased by 1.42 mg/L (95% CI: 0.90, 1.95) among neonates with 25(OH)D <25.0 nmol/L, and decreased by 0.49 mg/L (95% CI: 0.17, 0.80) among neonates with 25(OH)D between 25.0 nmol/L and 49.9 nmol/L, after adjusting for potential confounders. However, no significant association between 25(OH)D and CRP was observed among neonates with 25(OH)D ≥50 nmol/L. Cord blood 25(OH)D and CRP levels showed a significant seasonal trend with lower 25(OH)D and higher CRP during winter-spring than summer-autumn. Stratified by season, a significant linear association of 25(OH)D with CRP was observed in neonates born in winter-spring (adjusted β = -0.11, 95% CI: -0.13, -0.10), but not summer-autumn. Among neonates born in winter-spring, neonates with 25(OH)D <25 nmol/L had higher risk of CRP ≥10 mg/L (adjusted OR = 3.06, 95% CI: 2.00, 4.69), compared to neonates with 25(OH)D ≥25 nmol/L. Neonates with vitamin D deficiency had higher risk of exposure to elevated inflammation at birth.
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482
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Calton EK, Keane KN, Newsholme P, Soares MJ. The Impact of Vitamin D Levels on Inflammatory Status: A Systematic Review of Immune Cell Studies. PLoS One 2015; 10:e0141770. [PMID: 26528817 PMCID: PMC4631349 DOI: 10.1371/journal.pone.0141770] [Citation(s) in RCA: 236] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Accepted: 10/13/2015] [Indexed: 02/06/2023] Open
Abstract
Chronic low-grade inflammation accompanies obesity and its related chronic conditions. Both peripheral blood mononuclear cells (PBMCs) and cell lines have been used to study whether vitamin D has immune modulating effects; however, to date a detailed systematic review describing the published evidence has not been completed. We therefore conducted a systematic review on the effect of vitamin D on the protein expression and secretion of inflammatory markers by human-derived immune cells. The review was registered at the International Prospective Register for Systematic Reviews (PROSPERO, Registration number CRD42015023222). A literature search was conducted using Pubmed, Science Direct, Scopus, Web of Science and Medline. The search strategy used the following search terms: Vitamin D or cholecalciferol or 1,25-dihydroxyvitamin or 25-hydroxy-Vitamin D and Inflam* or cytokine* and supplement* or cell*. These terms were searched in the abstract, title and keywords. Inclusion criteria for study selection consisted of human-derived immune cell lines or cellular studies where PBMCs were obtained from humans, reported in the English language, and within the time period of 2000 to 2015. The selection protocol was mapped according to PRISMA guidelines. Twenty three studies (7 cell line and 16 PBMCs studies) met our criteria. All studies selected except one used the active metabolite 1,25(OH)2, with one study using cholecalciferol and two studies also using 25(OH)D. Four out of seven cell line studies showed an anti-inflammatory effect where suppression of key markers such as macrophage chemotactic protein 1, interleukin 6 and interleukin 8 were observed. Fourteen of sixteen PBMC studies also showed a similar anti-inflammatory effect based on common inflammatory endpoints. Mechanisms for such effects included decreased protein expression of toll-like receptor-2 and toll-like receptor-4; lower levels of phosphorylated p38 and p42/42; reduced expression of phosphorylated signal transducer and activator of transcription 5 and decreased reactive oxygen species. This review demonstrates that an anti-inflammatory effect of vitamin D is a consistent observation in studies of cell lines and human derived PBMCs.
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Affiliation(s)
- Emily K. Calton
- Directorate of Nutrition Dietetics & Food Technology, School of Public Health, CHIRI-Metabolic Health, Curtin University, Perth, Western Australia 6845
| | - Kevin N. Keane
- School of Biomedical Sciences, CHIRI Biosciences, Curtin University, Perth, Western Australia 6845
| | - Philip Newsholme
- School of Biomedical Sciences, CHIRI Biosciences, Curtin University, Perth, Western Australia 6845
- * E-mail:
| | - Mario J. Soares
- Directorate of Nutrition Dietetics & Food Technology, School of Public Health, CHIRI-Metabolic Health, Curtin University, Perth, Western Australia 6845
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483
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Ryz NR, Lochner A, Bhullar K, Ma C, Huang T, Bhinder G, Bosman E, Wu X, Innis SM, Jacobson K, Vallance BA. Dietary vitamin D3 deficiency alters intestinal mucosal defense and increases susceptibility to Citrobacter rodentium-induced colitis. Am J Physiol Gastrointest Liver Physiol 2015; 309:G730-42. [PMID: 26336925 PMCID: PMC4628967 DOI: 10.1152/ajpgi.00006.2015] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 08/27/2015] [Indexed: 01/31/2023]
Abstract
Vitamin D deficiency affects more that 1 billion people worldwide. Although thought to increase risk of bacterial infections, the importance of vitamin D on host defense against intestinal bacterial pathogens is currently unclear since injection of the active form of vitamin D, 1,25(OH)2D3, increased susceptibility to the enteric bacterial pathogen Citrobacter rodentium by suppressing key immune/inflammatory factors. To further characterize the role of vitamin D during bacteria-induced colitis, we fed weanling mice either vitamin D3-deficient or vitamin D3-sufficient diets for 5 wk and then challenged them with C. rodentium. Vitamin D3-deficient mice lost significantly more body weight, carried higher C. rodentium burdens, and developed worsened histological damage. Vitamin D3-deficient mice also suffered greater bacterial translocation to extra-intestinal tissues, including mesenteric lymph nodes, spleen, and liver. Intestinal tissues of infected vitamin D3-deficient mice displayed increased inflammatory cell infiltrates as well as significantly higher gene transcript levels of inflammatory mediators TNF-α, IL-1β, IL-6, TGF-β, IL-17A, and IL-17F as well as the antimicrobial peptide REG3γ. Notably, these exaggerated inflammatory responses accelerated the loss of commensal microbes and were associated with an impaired ability to detoxify bacterial lipopolysaccharide. Overall, these studies show that dietary-induced vitamin D deficiency exacerbates intestinal inflammatory responses to infection, also impairing host defense.
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Affiliation(s)
- Natasha R. Ryz
- 1Division of Gastroenterology, Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada; and
| | - Arion Lochner
- 1Division of Gastroenterology, Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada; and
| | - Kirandeep Bhullar
- 1Division of Gastroenterology, Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada; and
| | - Caixia Ma
- 1Division of Gastroenterology, Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada; and
| | - Tina Huang
- 1Division of Gastroenterology, Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada; and
| | - Ganive Bhinder
- 1Division of Gastroenterology, Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada; and
| | - Else Bosman
- 1Division of Gastroenterology, Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada; and
| | - Xiujuan Wu
- 1Division of Gastroenterology, Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada; and
| | - Sheila M. Innis
- 2Division of Neonatology, Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Kevan Jacobson
- 1Division of Gastroenterology, Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada; and
| | - Bruce A. Vallance
- 1Division of Gastroenterology, Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada; and
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484
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Mukhopadhyay D, Mukherjee S, Roy S, Dalton JE, Kundu S, Sarkar A, Das NK, Kaye PM, Chatterjee M. M2 Polarization of Monocytes-Macrophages Is a Hallmark of Indian Post Kala-Azar Dermal Leishmaniasis. PLoS Negl Trop Dis 2015; 9:e0004145. [PMID: 26496711 PMCID: PMC4619837 DOI: 10.1371/journal.pntd.0004145] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Accepted: 09/16/2015] [Indexed: 01/30/2023] Open
Abstract
The high level of functional diversity and plasticity in monocytes/macrophages has been defined within in vitro systems as M1 (classically activated), M2 (alternatively activated) and deactivated macrophages, of which the latter two subtypes are associated with suppression of cell mediated immunity, that confers susceptibility to intracellular infection. Although the Leishmania parasite modulates macrophage functions to ensure its survival, what remains an unanswered yet pertinent question is whether these macrophages are deactivated or alternatively activated. This study aimed to characterize the functional plasticity and polarization of monocytes/macrophages and delineate their importance in the immunopathogenesis of Post kala-azar dermal leishmaniasis (PKDL), a chronic dermatosis of human leishmaniasis. Monocytes from PKDL patients showed a decreased expression of TLR-2/4, along with an attenuated generation of reactive oxidative/nitrosative species. At disease presentation, an increased mRNA expression of classical M2 markers CD206, ARG1 and PPARG in monocytes and lesional macrophages indicated M2 polarization of macrophages which was corroborated by increased expression of CD206 and arginase-1. Furthermore, altered vitamin D signaling was a key feature in PKDL, as disease presentation was associated with raised plasma levels of monohydroxylated vitamin D3 and vitamin D3- associated genes, features of M2 polarization. Taken together, in PKDL, monocyte/macrophage subsets appear to be alternatively activated, a phenotype that might sustain disease chronicity. Importantly, repolarization of these monocytes to M1 by antileishmanial drugs suggests that switching from M2 to M1 phenotype might represent a therapeutic opportunity, worthy of future pharmacological consideration. Monocyte/macrophage subsets following their polarization by the microenvironement serve as important immune sentinels that play a vital role in host defense and homeostasis. The polarization of macrophage function has been broadly classified as M1 (classical) and M2 (alternate) activation, wherein M1 polarised cells display a strong pro-inflammatory microbicidal response, while M2 polarization is linked to production of an anti-inflammatory milieu leading to tissue regeneration and wound healing. Data pertaining to macrophage polarization are primarily derived from murine models, but increasing evidence is highlighting the inadequacy of direct inter-species translation. In leishmaniasis, a protozoan infection caused by the genus Leishmania, manipulation of host macrophage function is central to pathogenesis. In this study we report that monocyte/macrophage subsets in Post kala-azar dermal leishmaniasis are polarized to an M2 phenotype. This study provides insights into systemic and local regulation of macrophage/ monocyte functions in this important human disease and highlights the influence of immunomodulatory anti-leishmanial chemotherapy on macrophage/monocyte polarization.
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Affiliation(s)
- Debanjan Mukhopadhyay
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India
| | - Shibabrata Mukherjee
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India
| | - Susmita Roy
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India
| | - Jane E. Dalton
- Centre for Immunology and Infection, Hull York Medical School and Department of Biology, University of York, York, United Kingdom
| | - Sunanda Kundu
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India
| | - Avijit Sarkar
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India
| | - Nilay K. Das
- Department of Dermatology, Calcutta Medical College, Kolkata, West Bengal, India
| | - Paul M. Kaye
- Centre for Immunology and Infection, Hull York Medical School and Department of Biology, University of York, York, United Kingdom
- * E-mail: (PMK); (MC)
| | - Mitali Chatterjee
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India
- * E-mail: (PMK); (MC)
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485
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Karaky M, Alcina A, Fedetz M, Barrionuevo C, Potenciano V, Delgado C, Izquierdo G, Matesanz F. The multiple sclerosis-associated regulatory variant rs10877013 affects expression of CYP27B1 and VDR under inflammatory or vitamin D stimuli. Mult Scler 2015; 22:999-1006. [DOI: 10.1177/1352458515610208] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 09/10/2015] [Indexed: 12/19/2022]
Abstract
Background: Vitamin D deficit is considered an important risk factor for many inflammatory and autoimmune diseases. Objective: To investigate the influence of the multiple sclerosis (MS)-associated regulatory variant rs10877013 on the expression of genes involved in vitamin D activation ( CYP27B1), vitamin D receptor ( VDR), and vitamin D degradation ( CYP24A1) under inflammatory environment or vitamin D. Methods: We used lipopolysaccharide and interferon-gamma (LPS+IFNγ) activated monocytes from 119 individuals and vitamin D-stimulated lymphoblastoid cell lines (LCLs, n = 109) of 1000 genomes to quantify the mRNA expression of vitamin D genes by quantitative reverse transcription polymerase chain reaction (RT-qPCR). Results: We found that CYP27B1 mRNA expression level was associated with the rs10877013 genotypes ( p = 5.0E-6) in LPS+IFNγ treated monocytes, but not in vitamin D-stimulated LCLs. Inversely, rs10877013 genotypes were associated with VDR expression in LCLs ( p = 6.0E-4) but not in monocytes. Finally, CYP24A1 was highly induced by the active form of vitamin D and its expression correlated with the expression of VDR in LCLs but neither the MS-associated variant in the region (rs2248359) nor any other variant located in 1 Mb around CYP24A1 was associated with its expression. Conclusions: The MS-associated variant rs10877013 is a genetic determinant that affects the functioning of the vitamin D system linking environmental and genetic factors.
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Affiliation(s)
- Mohamad Karaky
- Department of Cell Biology and Immunology, Instituto de Parasitología y Biomedicina “López Neyra” (IPBLN-CSIC), Granada, Spain
| | - Antonio Alcina
- Department of Cell Biology and Immunology, Instituto de Parasitología y Biomedicina “López Neyra” (IPBLN-CSIC), Granada, Spain
| | - María Fedetz
- Department of Cell Biology and Immunology, Instituto de Parasitología y Biomedicina “López Neyra” (IPBLN-CSIC), Granada, Spain
| | - Cristina Barrionuevo
- Department of Cell Biology and Immunology, Instituto de Parasitología y Biomedicina “López Neyra” (IPBLN-CSIC), Granada, Spain
| | - Victor Potenciano
- Department of Cell Biology and Immunology, Instituto de Parasitología y Biomedicina “López Neyra” (IPBLN-CSIC), Granada, Spain
| | - Concepción Delgado
- Centro Regional de Transfusión Sanguínea Granada-Almería (CRTS), Granada, Spain
| | - Guillermo Izquierdo
- Unidad de Esclerosis Múltiple, Hospital Universitario Virgen Macarena, Sevilla, Spain
| | - Fuencisla Matesanz
- Department of Cell Biology and Immunology, Instituto de Parasitología y Biomedicina “López Neyra” (IPBLN-CSIC), Granada, Spain
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486
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Vitamin D3 modulates the innate immune response through regulation of the hCAP-18/LL-37 gene expression and cytokine production. Inflamm Res 2015; 65:25-32. [DOI: 10.1007/s00011-015-0884-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 09/11/2015] [Accepted: 09/24/2015] [Indexed: 01/05/2023] Open
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487
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Jiang WL, Gu HB, Zhang YF, Xia QQ, Qi J, Chen JC. Vitamin D Supplementation in the Treatment of Chronic Heart Failure: A Meta-analysis of Randomized Controlled Trials. Clin Cardiol 2015; 39:56-61. [PMID: 26415519 DOI: 10.1002/clc.22473] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/13/2015] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND In recent years, there has been growing evidence that vitamin D deficiency is associated with the development and progression of chronic heart failure (CHF). HYPOTHESIS Additional supplementation of vitamin D may have protective effects in patients with CHF. METHODS We searched PubMed, Embase, and Cochrane databases through June 2015 and included 7 randomized controlled trials that investigated the effects of vitamin D on cardiovascular outcomes in patients with CHF. Then, we performed a meta-analysis of clinical trials to confirm whether vitamin D supplementation is beneficial in CHF patients. The weighted mean difference (WMD) and 95% confidence interval (CI) were calculated using fixed- or random-effects models. RESULTS Our pooled results indicated that additional supplementation of vitamin D was not superior to conventional treatment in terms of left ventricular ejection fraction, N-terminal pro-B-type natriuretic peptide, and 6-minute walk distance. Moreover, vitamin D supplementation was associated with significant decreases in the levels of tumor necrosis factor-α (WMD: -2.42 pg/mL, 95% CI: -4.26 to -0.57, P < 0.05), C-reactive protein (WMD: -0.72 mg/L, 95% CI: -1.42 to -0.02, P < 0.05), and parathyroid hormone (WMD: -13.44 pg/mL, 95% CI: -21.22 to -5.67, P < 0.05). CONCLUSIONS Vitamin D supplementation may decrease serum levels of parathyroid hormone and inflammatory mediators in CHF patients, whereas it has no beneficial effects on improvement of left ventricular function and exercise tolerance.
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Affiliation(s)
- Wei-Long Jiang
- Department of Respiration, Jiangyin Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Jiangyin, China
| | - Hai-Bo Gu
- Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Yu-Feng Zhang
- Department of Respiration, Jiangyin Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Jiangyin, China
| | - Qing-Qing Xia
- Department of Respiration, Jiangyin Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Jiangyin, China
| | - Jia Qi
- Department of Pharmacy, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jian-Chang Chen
- Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, China
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488
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Yin K, You Y, Swier V, Tang L, Radwan MM, Pandya AN, Agrawal DK. Vitamin D Protects Against Atherosclerosis via Regulation of Cholesterol Efflux and Macrophage Polarization in Hypercholesterolemic Swine. Arterioscler Thromb Vasc Biol 2015; 35:2432-42. [PMID: 26381871 DOI: 10.1161/atvbaha.115.306132] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 09/03/2015] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Prevalence of vitamin D (VD) deficiency and its association with the risk of cardiovascular disease prompted us to evaluate the effect of VD status on lipid metabolism and atherosclerosis in hypercholesterolemic microswine. APPROACH AND RESULTS Yucatan microswine were fed with VD-deficient (0 IU/d), VD-sufficient (1000 IU/d), or VD-supplemented (3000 IU/d) high-cholesterol diet for 48 weeks. Serum lipids and 25(OH)-cholecalciferol levels were measured biweekly. Histology and biochemical parameters of liver and arteries were analyzed. Effect of 1,25(OH)2D3 on cholesterol metabolism was examined in human hepatocyte carcinoma cell line (HepG2) and human monocytic cell line (THP-1) macrophage-derived foam cells. VD deficiency decreased plasma high-density lipoprotein levels, expression of liver X receptors, ATP-binding membrane cassette transporter A1, and ATP-binding membrane cassette transporter G1 and promoted cholesterol accumulation and atherosclerosis in hypercholesterolemic microswine. VD promoted nascent high-density lipoprotein formation in HepG2 cells via ATP-binding membrane cassette transporter A1-mediated cholesterol efflux. Cytochrome P450 (CYP)27B1 and VD receptor were predominantly present in the CD206(+) M2 macrophage foam cell-accumulated cores in coronary artery plaques. 1,25(OH)2D3 increased the expression of liver X receptors, ATP-binding membrane cassette transporter A1, and ATP-binding membrane cassette transporter G1 and promoted cholesterol efflux in THP-1 macrophage-derived foam cells. 1,25(OH)2D3 decreased intracellular free cholesterol and polarized macrophages to M2 phenotype with decreased expression of tumor necrosis factor-α, interleukin-1β, interleukin-6 under lipopolysaccharide stimulation. 1,25(OH)2D3 markedly induced CYP27A1 expression via a VD receptor-dependent c-Jun N-terminal kinase (JNK) 1/2 signaling pathway and increased 27-hydroxycholesterol levels, which induced liver X receptors, ATP-binding membrane cassette transporter A1, and ATP-binding membrane cassette transporter G1 expression and stimulated cholesterol efflux that was inhibited by VD receptor antagonist and JNK1/2 signaling inhibitor in THP-1 macrophage-derived foam cell. CONCLUSIONS VD protects against atherosclerosis in hypercholesterolemic swine via controlling cholesterol efflux and macrophage polarization via increased CYP27A1 activation.
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Affiliation(s)
- Kai Yin
- From the Center for Clinical & Translational Science, Creighton University School of Medicine, Omaha, NE
| | - Yong You
- From the Center for Clinical & Translational Science, Creighton University School of Medicine, Omaha, NE
| | - Vicki Swier
- From the Center for Clinical & Translational Science, Creighton University School of Medicine, Omaha, NE
| | - Lin Tang
- From the Center for Clinical & Translational Science, Creighton University School of Medicine, Omaha, NE
| | - Mohamed M Radwan
- From the Center for Clinical & Translational Science, Creighton University School of Medicine, Omaha, NE
| | - Amit N Pandya
- From the Center for Clinical & Translational Science, Creighton University School of Medicine, Omaha, NE
| | - Devendra K Agrawal
- From the Center for Clinical & Translational Science, Creighton University School of Medicine, Omaha, NE.
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489
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Heulens N, Korf H, Cielen N, De Smidt E, Maes K, Gysemans C, Verbeken E, Gayan-Ramirez G, Mathieu C, Janssens W. Vitamin D deficiency exacerbates COPD-like characteristics in the lungs of cigarette smoke-exposed mice. Respir Res 2015; 16:110. [PMID: 26376849 PMCID: PMC4574263 DOI: 10.1186/s12931-015-0271-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 08/30/2015] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is characterized by excessive inflammation and disturbed bacterial clearance in the airways. Although cigarette smoke (CS) exposure poses a major risk, vitamin D deficiency could potentially contribute to COPD progression. Many in vitro studies demonstrate important anti-inflammatory and antibacterial effects of vitamin D, but a direct contribution of vitamin D deficiency to COPD onset and disease progression has not been explored. METHODS In the current study, we used a murine experimental model to investigate the combined effect of vitamin D deficiency and CS exposure on the development of COPD-like characteristics. Therefore, vitamin D deficient or control mice were exposed to CS or ambient air for a period of 6 (subacute) or 12 weeks (chronic). Besides lung function and structure measurements, we performed an in depth analysis of the size and composition of the cellular infiltrate in the airways and lung parenchyma and tested the ex vivo phagocytic and oxidative burst capacity of alveolar macrophages. RESULTS Vitamin D deficient mice exhibited an accelerated lung function decline following CS exposure compared to control mice. Furthermore, early signs of emphysema were only observed in CS-exposed vitamin D deficient mice, which was accompanied by elevated levels of MMP-12 in the lung. Vitamin D deficient mice showed exacerbated infiltration of inflammatory cells in the airways and lung parenchyma after both subacute and chronic CS exposure compared to control mice. Furthermore, elevated levels of typical proinflammatory cytokines and chemokines could be detected in the bronchoalveolar lavage fluid (KC and TNF-α) and lung tissue (IP-10, MCP-1, IL-12) of CS-exposed vitamin D deficient mice compared to control mice. Finally, although CS greatly impaired the ex vivo phagocytic and oxidative burst function of alveolar macrophages, vitamin D deficient mice did not feature an additional defect. CONCLUSIONS Our data demonstrate that vitamin D deficiency both accelerates and aggravates the development of characteristic disease features of COPD. As vitamin D deficiency is highly prevalent, large randomized trials exploring effects of vitamin D supplementation on lung function decline and COPD onset are needed.
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Affiliation(s)
- Nele Heulens
- Laboratory of Respiratory Diseases, Department of Clinical and Experimental Medicine, Katholieke Universiteit Leuven, Herestraat 49, 3000, Leuven, Belgium.
| | - Hannelie Korf
- Laboratory of Clinical and Experimental Endocrinology, Department of Clinical and Experimental Medicine, Katholieke Universiteit Leuven, Herestraat 49, 3000, Leuven, Belgium.
| | - Nele Cielen
- Laboratory of Respiratory Diseases, Department of Clinical and Experimental Medicine, Katholieke Universiteit Leuven, Herestraat 49, 3000, Leuven, Belgium.
| | - Elien De Smidt
- Laboratory of Clinical and Experimental Endocrinology, Department of Clinical and Experimental Medicine, Katholieke Universiteit Leuven, Herestraat 49, 3000, Leuven, Belgium.
| | - Karen Maes
- Laboratory of Respiratory Diseases, Department of Clinical and Experimental Medicine, Katholieke Universiteit Leuven, Herestraat 49, 3000, Leuven, Belgium.
| | - Conny Gysemans
- Laboratory of Clinical and Experimental Endocrinology, Department of Clinical and Experimental Medicine, Katholieke Universiteit Leuven, Herestraat 49, 3000, Leuven, Belgium.
| | - Erik Verbeken
- Translational Cell and Tissue Research, Department of Imaging and Pathology, Katholieke Universiteit Leuven, Minderbroederstraat 12, 3000, Leuven, Belgium.
| | - Ghislaine Gayan-Ramirez
- Laboratory of Respiratory Diseases, Department of Clinical and Experimental Medicine, Katholieke Universiteit Leuven, Herestraat 49, 3000, Leuven, Belgium.
| | - Chantal Mathieu
- Laboratory of Clinical and Experimental Endocrinology, Department of Clinical and Experimental Medicine, Katholieke Universiteit Leuven, Herestraat 49, 3000, Leuven, Belgium.
| | - Wim Janssens
- Laboratory of Respiratory Diseases, Department of Clinical and Experimental Medicine, Katholieke Universiteit Leuven, Herestraat 49, 3000, Leuven, Belgium.
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490
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Kasprzak Z, Śliwicka E, Hennig K, Pilaczyńska-Szcześniak Ł, Huta-Osiecka A, Nowak A. Vitamin D, Iron Metabolism, and Diet in Alpinists During a 2-Week High-Altitude Climb. High Alt Med Biol 2015; 16:230-5. [DOI: 10.1089/ham.2015.0008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Zbigniew Kasprzak
- Department of Hygiene, University School of Physical Education, Poznań, Poland
| | - Ewa Śliwicka
- Department of Hygiene, University School of Physical Education, Poznań, Poland
| | - Karol Hennig
- Department of Hygiene, University School of Physical Education, Poznań, Poland
| | | | - Anna Huta-Osiecka
- Department of Hygiene, University School of Physical Education, Poznań, Poland
| | - Alicja Nowak
- Department of Hygiene, University School of Physical Education, Poznań, Poland
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491
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Zhu DM, Liu Y, Zhang AG, Chu ZX, Wu Q, Li H, Ge JF, Dong Y, Zhu P. High levels of vitamin D in relation to reduced risk of schizophrenia with elevated C-reactive protein. Psychiatry Res 2015; 228:565-70. [PMID: 26106052 DOI: 10.1016/j.psychres.2015.05.051] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 04/09/2015] [Accepted: 05/05/2015] [Indexed: 12/28/2022]
Abstract
There is growing evidence on the novel role of vitamin D in reducing inflammation. This study aimed to examine the hypothesis that vitamin D is inversely associated with C-reactive protein (CRP) in patients with schizophrenia, and high levels of vitamin D may be linked to reduced risk of schizophrenia with elevated CRP. Ninety-three patients with schizophrenia and 93 family-matched controls were recruited in this cross-sectional study. Plasma concentrations of CRP and 25-hydroxyvitamin D [25(OH)D] were measured using commercial kits. Information about demographic characteristics and clinic data were obtained by interviews or medical records. Mean levels of CRP and 25(OH)D were 43.3% higher and 26.7% lower for patients compared to controls, respectively. 25(OH)D were inversely associated with CRP in the patients, but not in the controls. The proportions of patients significantly increased with increasing quartiles of CRP, while significantly decreased with increasing quartiles of 25(OH)D. Among individuals with high CRP, participants with high 25(OH)D have significantly lower proportion (adjusted OR =0.217, 95% CI 0.063, 0.751) of schizophrenia compared to those with low 25(OH)D. The evidence suggested that high levels of vitamin D may be linked to reduced risk of schizophrenia with elevated CRP.
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Affiliation(s)
- Dao-min Zhu
- Department of Psychiatry, Hefei Fourth People's Hospital, Hefei 230022, China; Clinical School of Mental Health, Anhui Medical University, Hefei 230032, China; Anhui Mental Health Center, Hefei 230022, China
| | - Yong Liu
- Department of Psychiatry, Hefei Fourth People's Hospital, Hefei 230022, China; Clinical School of Mental Health, Anhui Medical University, Hefei 230032, China; Anhui Mental Health Center, Hefei 230022, China
| | - Ai-guo Zhang
- Department of Psychiatry, Hefei Fourth People's Hospital, Hefei 230022, China; Clinical School of Mental Health, Anhui Medical University, Hefei 230032, China; Anhui Mental Health Center, Hefei 230022, China
| | - Zhao-xue Chu
- Department of Psychiatry, Hefei Fourth People's Hospital, Hefei 230022, China; Clinical School of Mental Health, Anhui Medical University, Hefei 230032, China; Anhui Mental Health Center, Hefei 230022, China
| | - Qing Wu
- Department of Psychiatry, Hefei Fourth People's Hospital, Hefei 230022, China; Clinical School of Mental Health, Anhui Medical University, Hefei 230032, China; Anhui Mental Health Center, Hefei 230022, China
| | - Hui Li
- Department of Psychiatry, Hefei Fourth People's Hospital, Hefei 230022, China; Clinical School of Mental Health, Anhui Medical University, Hefei 230032, China; Anhui Mental Health Center, Hefei 230022, China
| | - Jin-fang Ge
- Department of Pharmacology, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Yi Dong
- Department of Psychiatry, Hefei Fourth People's Hospital, Hefei 230022, China; Clinical School of Mental Health, Anhui Medical University, Hefei 230032, China; Anhui Mental Health Center, Hefei 230022, China
| | - Peng Zhu
- Department of Maternal, Child & Adolescent Health, School of Public Health, Anhui Medical University, Hefei 230032, China; Anhui Provincial Key Laboratory of Population Health & Aristogenics, Hefei 230032, China.
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492
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Khalil MS. Vitamin D3 May Ameliorate the Ketoconazole Induced Adrenal Injury: Histological and Immunohistochemical Studies on Albino Rats. Acta Histochem Cytochem 2015; 48:103-13. [PMID: 26379312 PMCID: PMC4564376 DOI: 10.1267/ahc.14062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Accepted: 06/01/2015] [Indexed: 01/03/2023] Open
Abstract
Ketoconazole (KZ) is used widely for treating the superficial, systemic fungal activities and hyperandrogenemic states. Its uses are limited by its deleterious effect on histological structure and function of the adrenal cortex. This study investigates whether vitamin D3 supplement can ameliorate the morphological changes induced by KZ. Thirty four adult male albino rats were randomized into control group (Group I) which was subdivided into: control 1 (n=7) and control 2 (n=7): In control 1, rats were intraperitoneal (I.P) injected once with 1 ml of polyethylene glycol-400 for 15 consecutive days and control 2 rats were injected I.P with (1 μg/kg) of vitamin D3 for the same period. Group II (n=10): rats were I.P injected with KZ (10 mg/100 g of body weight) once daily for 15 days; Group III (n=10): rats were I.P concomitantly injected with KZ and vitamin D3 similar doses to animals in groups II and control 2 respectively. Blood samples were collected to determine plasma ACTH, corticosterone and aldosterone levels. The right adrenal specimens sections were stained with Haematoxylin & Eosin and Masson Trichrome for histological studies and treated with Bax, Ubiquitin and vitamin D receptors for immunohistochemical studies. KZ induced adrenal cortical morphological changes in forms of disturbed adrenocorticocyte cytological architecture, nuclear changes, and intracellular lipid accumulation. KZ also increased adrenal Bax and Ub but decreased the vitamin D receptors immunopositive staining expression, in addition to increased plasma ACTH as well as decreased corticosterone and aldosterone levels. These changes were ameliorated by supplementing with vitamin D3.
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Affiliation(s)
- Mahmoud Salah Khalil
- Department of Histology, Faculty of Medicine, Suez Canal University, Egypt
- Medical College, King Saud University, KSA
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493
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Huang YN, Ho YJ, Lai CC, Chiu CT, Wang JY. 1,25-Dihydroxyvitamin D3 attenuates endotoxin-induced production of inflammatory mediators by inhibiting MAPK activation in primary cortical neuron-glia cultures. J Neuroinflammation 2015; 12:147. [PMID: 26259787 PMCID: PMC4532256 DOI: 10.1186/s12974-015-0370-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 07/29/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Neuroinflammation occurs in insulted regions of the brain and may be due to reactive oxygen species (ROS), nitric oxide (NO), cytokines, and chemokines produced by activated glia. Excessive production of neurotoxic molecules causes further neuronal damage. Low levels of vitamin D3 are a risk factor for various brain diseases. METHODS Using the bacterial endotoxin, lipopolysaccharide (LPS), to induce neuroinflammation in primary cortical neuron-glia cultures, we investigated how 1,25-dihydroxyvitamin D3 (1,25(OH)2D3) affected neuroinflammation. RESULTS LPS (100 ng/ml) induced the accumulation of nitrite and the production of ROS, interleukin (IL)-6, and macrophage inflammatory protein (MIP)-2 in time-dependent manners. Inhibition of p38 and extracellular signal-regulated kinase (ERK) but not c-Jun N-terminal kinase (JNK) mitogen-activated protein kinase (MAPK) by 20 μM of SB203580, PD98059, and SP600125, significantly reduced LPS-induced ROS production, NO accumulation, and inducible NO synthase (iNOS) expression, respectively. LPS-induced IL-6 and MIP-2 were significantly attenuated by inhibition of p38, ERK, and JNK MAPK. Cotreatment with 1,25(OH)2D3 attenuated LPS-induced ROS production, NO accumulation, and iNOS expression in concentration-dependent manners. 1,25(OH)2D3 also reduced LPS-induced production of IL-6 and MIP-2. Similarly, iNOS, IL-6, and MIP-2 mRNA expression in cells treated with LPS significantly increased, whereas this effect was attenuated by 1,25(OH)2D3. Moreover, LPS-induced phosphorylation of p38, ERK, and JNK MAPK was significantly inhibited by 1,25(OH)2D3. CONCLUSIONS Our findings indicate that 1,25(OH)2D3 reduced the LPS-stimulated production of inflammatory molecules in neuron-glia cultures by inhibiting MAPK pathways and the production of downstream inflammatory molecules. We suggest that 1,25(OH)2D3 can be used to alleviate neuroinflammation in various brain injuries.
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Affiliation(s)
- Ya-Ni Huang
- Department of Nursing, Hsin Sheng Junior College of Medical Care and Management, Taoyuan City, Taiwan.
| | - Yi-Jung Ho
- Institute of Preventive Medicine, National Defense Medical Center, Taipei, Taiwan. .,Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan.
| | - Chien-Cheng Lai
- Division of Orthopedics, Department of Surgery, Far Eastern Memorial Hospital, New Taipei City, Taiwan.
| | - Chien-Tsai Chiu
- Department of Neurosurgery, En Chu Kong Hospital, New Taipei City, Taiwan.
| | - Jia-Yi Wang
- Graduate Institute of Medical Sciences and Department of Physiology, College of Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 110, Taiwan.
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494
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Intraperitoneal application of phospholipids for the prevention of postoperative adhesions: a possible role of myofibroblasts. J Surg Res 2015; 197:291-300. [DOI: 10.1016/j.jss.2015.04.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 04/03/2015] [Accepted: 04/09/2015] [Indexed: 12/20/2022]
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495
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Effect of vitamin D supplementation on selected inflammatory biomarkers in older adults: a secondary analysis of data from a randomised, placebo-controlled trial. Br J Nutr 2015. [DOI: 10.1017/s0007114515002366] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
AbstractObservational studies have suggested that 25-hydroxyvitamin D (25(OH)D) levels are associated with inflammatory markers. Most trials reporting significant associations between vitamin D intake and inflammatory markers used specific patient groups. Thus, we aimed to determine the effect of supplementary vitamin D using secondary data from a population-based, randomised, placebo-controlled, double-blind trial (Pilot D-Health trial 2010/0423). Participants were 60- to 84-year-old residents of one of the four eastern states of Australia. They were randomly selected from the electoral roll and were randomised to one of three trial arms: placebo (n 214), 750 μg (n 215) or 1500 μg (n 215) vitamin D3, each taken once per month for 12 months. Post-intervention blood samples for the analysis of C-reactive protein (CRP), IL-6, IL-10, leptin and adiponectin levels were available for 613 participants. Associations between intervention group and biomarker levels were evaluated using quantile regression. There were no statistically significant differences in distributions of CRP, leptin, adiponectin, leptin:adiponectin ratio or IL-10 levels between the placebo group and either supplemented group. The 75th percentile IL-6 level was 2·8 pg/ml higher (95 % CI 0·4, 5·8 pg/ml) in the 1500 μg group than in the placebo group (75th percentiles:11·0 v. 8·2 pg/ml), with a somewhat smaller, non-significant difference in 75th percentiles between the 750 μg and placebo groups. Despite large differences in serum 25(OH)D levels between the three groups after 12 months of supplementation, we found little evidence of an effect of vitamin D supplementation on cytokine or adipokine levels, with the possible exception of IL-6.
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496
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Excess 25-hydroxyvitamin D3 exacerbates tubulointerstitial injury in mice by modulating macrophage phenotype. Kidney Int 2015; 88:1013-29. [PMID: 26176830 DOI: 10.1038/ki.2015.210] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 04/25/2015] [Accepted: 05/14/2015] [Indexed: 12/18/2022]
Abstract
Vitamin D hydroxylated at carbon 25 (25(OH)D) is generally recognized as a precursor of active vitamin D. Despite its low affinity for the vitamin D receptor (VDR), both deficient and excessive 25(OH)D levels are associated with poor clinical outcomes. Here we studied direct effects of 25(OH)D3 on the kidney using 25(OH)D-1α-hydroxylase (CYP27B1) knockout mice. The effects of 25(OH)D3 on unilateral ureteral obstruction were analyzed as proximal tubular cells and macrophages are two major cell types that take up 25(OH)D and contribute to the pathogenesis of kidney injury. Excess 25(OH)D3 in obstructed mice worsened oxidative stress and tubulointerstitial fibrosis, whereas moderate levels of 25(OH)D3 had no effects. The exacerbating effects of excess 25(OH)D3 were abolished in CYP27B1/VDR double-knockout mice and in macrophage-depleted CYP27B1 knockout mice. Excess 25(OH)D3 upregulated both M1 marker (TNF-α) and M2 marker (TGF-β1) levels of kidney-infiltrating macrophages. In vitro analyses verified that excess 25(OH)D3 directly upregulated TNF-α and TGF-β1 in cultured macrophages but not in tubular cells. TNF-α and 25(OH)D3 cooperatively induced oxidative stress by upregulating iNOS in tubular cells. Aggravated tubulointerstitial fibrosis in mice with excess 25(OH)D3 indicated that macrophage-derived TGF-β1 also had a key role in the pathogenesis of surplus 25(OH)D3. Thus, excess 25(OH)D3 worsens tubulointerstitial injury by modulating macrophage phenotype.
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497
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Liefaard MC, Ligthart S, Vitezova A, Hofman A, Uitterlinden AG, Kiefte-de Jong JC, Franco OH, Zillikens MC, Dehghan A. Vitamin D and C-Reactive Protein: A Mendelian Randomization Study. PLoS One 2015; 10:e0131740. [PMID: 26147588 PMCID: PMC4492676 DOI: 10.1371/journal.pone.0131740] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Accepted: 06/04/2015] [Indexed: 12/15/2022] Open
Abstract
Vitamin D deficiency is widely prevalent and has been associated with many diseases. It has been suggested that vitamin D has effects on the immune system and inhibits inflammation. The aim of our study was to investigate whether vitamin D has an inhibitory effect on systemic inflammation by assessing the association between serum levels of vitamin D and C-reactive protein. We studied the association between serum 25-hydroxyvitamin D and C-reactive protein through linear regression in 9,649 participants of the Rotterdam Study, an observational, prospective population-based cohort study. We used genetic variants related to vitamin D and CRP to compute a genetic risk score and perform bi-directional Mendelian randomization analysis. In linear regression adjusted for age, sex, cohort and other confounders, natural log-transformed CRP decreased with 0.06 (95% CI: -0.08, -0.03) unit per standard deviation increase in 25-hydroxyvitamin D. Bi-directional Mendelian randomization analyses showed no association between the vitamin D genetic risk score and lnCRP (Beta per SD = -0.018; p = 0.082) or the CRP genetic risk score and 25-hydroxyvitamin D (Beta per SD = 0.001; p = 0.998). In conclusion, higher levels of Vitamin D are associated with lower levels of C-reactive protein. In this study we did not find evidence for this to be the result of a causal relationship.
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Affiliation(s)
- Marte C. Liefaard
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
- Netherlands Institute for Health Sciences, Rotterdam, the Netherlands
| | - Symen Ligthart
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Anna Vitezova
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Albert Hofman
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - André G. Uitterlinden
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
| | | | - Oscar H. Franco
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - M. Carola Zillikens
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Abbas Dehghan
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
- * E-mail:
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498
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Rajković J, Stojanović S, Đorđević L, Cvetković T, Najman S. Locally applied cholecalciferol and alfacalcidol act differently on healing of femur defects filled with bone mineral matrix and platelet-rich plasma in ovariectomized rats. BIOTECHNOL BIOTEC EQ 2015. [DOI: 10.1080/13102818.2015.1055702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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499
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Díaz L, Díaz-Muñoz M, García-Gaytán AC, Méndez I. Mechanistic Effects of Calcitriol in Cancer Biology. Nutrients 2015; 7:5020-50. [PMID: 26102214 PMCID: PMC4488829 DOI: 10.3390/nu7065020] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Revised: 06/09/2015] [Accepted: 06/12/2015] [Indexed: 02/05/2023] Open
Abstract
Besides its classical biological effects on calcium and phosphorus homeostasis, calcitriol, the active vitamin D metabolite, has a broad variety of actions including anticancer effects that are mediated either transcriptionally and/or via non-genomic pathways. In the context of cancer, calcitriol regulates the cell cycle, induces apoptosis, promotes cell differentiation and acts as anti-inflammatory factor within the tumor microenvironment. In this review, we address the different mechanisms of action involved in the antineoplastic effects of calcitriol.
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Affiliation(s)
- Lorenza Díaz
- Departamento de Biología de la Reproducción, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga No. 15, Tlalpan, Mexico City 14000, Mexico.
| | - Mauricio Díaz-Muñoz
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Blvd. Juriquilla 3001, Querétaro 76230, Mexico.
| | - Ana Cristina García-Gaytán
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Blvd. Juriquilla 3001, Querétaro 76230, Mexico.
| | - Isabel Méndez
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Blvd. Juriquilla 3001, Querétaro 76230, Mexico.
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500
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TREM-2 Receptor Expression Increases with 25(OH)D Vitamin Serum Levels in Patients with Pulmonary Sarcoidosis. Mediators Inflamm 2015; 2015:181986. [PMID: 26166951 PMCID: PMC4488005 DOI: 10.1155/2015/181986] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 05/08/2015] [Accepted: 05/18/2015] [Indexed: 11/17/2022] Open
Abstract
TREM-1 and TREM-2 molecules are members of the TREM transmembrane glycoproteins. In our previous study we identified increased expressions of TREM-1 and TREM-2 receptors in pulmonary sarcoidosis (PS). Only a few studies concerning the association between vitamin D and TREM receptor expression can be found. The aim of our current study was to determine the association between the levels of an inactive form of 25(OH)D vitamin and TREM-1 and TREM-2 receptor expressions. We have detected low levels of 25(OH)D vitamin in 79% of PS patients. Only 21% of patients had normal serum level of 25(OH)D vitamin with values clustered within the low-normal range. The most striking findings were the increased TREM-2 expressions on myeloid cells surfaces in BALF of PS patients with normal 25(OH)D vitamin serum levels compared with those with its decreased levels. The total number of TREM-2 positive cells was 5.7 times higher and the percentage of TREM-2 positive cells was also significantly increased in BALF of PS patients with normal compared to PS patients with low 25(OH)D vitamin serum levels. A significant correlation between total TREM-2 expression and vitamin D levels has been detected too. However, we have not detected similar differences in TREM-1expression and 25(OH)D vitamin serum levels.
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