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Park CY, Shin S, Han SN. Multifaceted Roles of Vitamin D for Diabetes: From Immunomodulatory Functions to Metabolic Regulations. Nutrients 2024; 16:3185. [PMID: 39339785 PMCID: PMC11435169 DOI: 10.3390/nu16183185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2024] [Revised: 09/15/2024] [Accepted: 09/19/2024] [Indexed: 09/30/2024] Open
Abstract
Numerous studies have established associations between vitamin D and diabetes. The vitamin D receptor is widely distributed throughout the human body, including in pancreatic beta cells (β-cells), hepatocytes, and immune cells. Therefore, vitamin D's effect on the risk, progression, or complications of diabetes may be mediated through various mechanisms. These include the regulation of insulin secretion or sensitivity and modulation of β-cell function and its immunomodulatory and anti-inflammatory effects. This review extensively explores the relationship between vitamin D status and diabetes, as well as the preventive or therapeutic effects of vitamin D supplementation on diabetes from human studies. Additionally, it examines in detail the impact of vitamin D on immune and inflammatory responses in the diabetic milieux and β-cell function to better understand the underlying mechanisms through which vitamin D influences diabetes.
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Affiliation(s)
- Chan Yoon Park
- Department of Food & Nutrition, College of Life Care Science Technology, The University of Suwon, Hwaseong-si 18323, Republic of Korea
| | - Sunhye Shin
- Department of Food and Nutrition, College of Science and Convergence Technology, Seoul Women's University, Seoul 01797, Republic of Korea
| | - Sung Nim Han
- Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul 08826, Republic of Korea
- Research Institute of Human Ecology, Seoul National University, Seoul 08826, Republic of Korea
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2
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Masoud RM, Abdel-Kader NM, Abdel-Ghaffar ARB, Moselhy SS, Elhenawy YI. Association between partial remission phase in type 1 diabetes and vitamin D receptor Fok1 rs2228570 polymorphism. J Pediatr Endocrinol Metab 2024:jpem-2024-0324. [PMID: 39237104 DOI: 10.1515/jpem-2024-0324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Accepted: 08/08/2024] [Indexed: 09/07/2024]
Abstract
OBJECTIVES The aim of the current study was to assess the natural course of partial remission (PR) phase of type 1 diabetes (T1D) and to highlight the putative association between vitamin D receptor (VDR) (Fok1) gene polymorphism and PR phase. METHODS Ninety participants with newly diagnosed T1D were followed up for a total of 12 months. The VDR (Fok1) rs2228570 gene polymorphism was genotyped using allelic discrimination (AD) assay. RESULTS Fifty-four patients (60 %) reached PR with an average duration of 5.63 ± 2.9 months. Among remitters, the frequency of CC "FF" genotype and allelic frequency of C "F" were significantly higher (p<0.001). Furthermore, participants expressing "CC" genotype had earlier onset of PR and spent a significantly longer duration in remission (p<0.001). Younger age (p<0.001; OR 41.6; CI 12.12-142.99), absence of DKA (p<0.001; OR 16, CI 4.36-50.74), higher C-peptide levels (p<0.001; OR 19.55; CI 6.52-58.63), and presence of CC "FF" genotype of VDR (p<0.001; OR 6.74; CI 2.41-18.86) best predicted the overall occurrence of PR. CONCLUSIONS Younger age, less extent of metabolic derangements, and expression of a CC "FF" genotype were found to influence the occurrence of PR. Data from the current study showed that the "C" allele could have a protective role on preserving residual β-cell mass and could predict both onset and duration of PR among newly diagnosed T1D. These findings support the growing concept of future tailored precision medicine.
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Affiliation(s)
- Randa Mahmoud Masoud
- Biochemistry Departments, Faculty of Science, 68791 Ain Shams University , Cairo, Egypt
| | - Nour Mohamed Abdel-Kader
- Biochemistry Departments, Faculty of Science, 68791 Ain Shams University , Cairo, Egypt
- Biochemistry Department, School of Life and Medical Sciences, University of Hertfordshire Hosted by Global Academic Foundation, Nasr City, Cairo, Egypt
| | | | - Said Salama Moselhy
- Biochemistry Departments, Faculty of Science, 68791 Ain Shams University , Cairo, Egypt
| | - Yasmine Ibrahim Elhenawy
- Pediatric and Adolescent Diabetes Unit (PADU), Pediatric Departments, Faculty of Medicine, Ain Shams University, Cairo, Egypt
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3
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Wu J, Atkins A, Downes M, Wei Z. Vitamin D in Diabetes: Uncovering the Sunshine Hormone's Role in Glucose Metabolism and Beyond. Nutrients 2023; 15:nu15081997. [PMID: 37111216 PMCID: PMC10142687 DOI: 10.3390/nu15081997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/18/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
Over the last decades, epidemiology and functional studies have started to reveal a pivotal role of vitamin D in both type 1 and type 2 diabetes pathogenesis. Acting through the vitamin D receptor (VDR), vitamin D regulates insulin secretion in pancreatic islets and insulin sensitivity in multiple peripheral metabolic organs. In vitro studies and both T1D and T2D animal models showed that vitamin D can improve glucose homeostasis by enhancing insulin secretion, reducing inflammation, reducing autoimmunity, preserving beta cell mass, and sensitizing insulin action. Conversely, vitamin D deficiency has been shown relevant in increasing T1D and T2D incidence. While clinical trials testing the hypothesis that vitamin D improves glycemia in T2D have shown conflicting results, subgroup and meta-analyses support the idea that raising serum vitamin D levels may reduce the progression from prediabetes to T2D. In this review, we summarize current knowledge on the molecular mechanisms of vitamin D in insulin secretion, insulin sensitivity, and immunity, as well as the observational and interventional human studies investigating the use of vitamin D as a treatment for diabetes.
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Affiliation(s)
- Jie Wu
- Department of Physiology and Biomedical Engineering, Mayo Clinic Arizona, Scottsdale, AZ 85259, USA
| | - Annette Atkins
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Michael Downes
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Zong Wei
- Department of Physiology and Biomedical Engineering, Mayo Clinic Arizona, Scottsdale, AZ 85259, USA
- Division of Endocrinology, Mayo Clinic Arizona, Scottsdale, AZ 85259, USA
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Magdy A, Farrag EAE, Hamed SM, Abdallah Z, El Nashar EM, Alghamdi MA, Ali AAH, Abd El-kader M. Neuroprotective and therapeutic effects of calcitriol in rotenone-induced Parkinson’s disease rat model. Front Cell Neurosci 2022; 16:967813. [PMID: 36187296 PMCID: PMC9522903 DOI: 10.3389/fncel.2022.967813] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 08/24/2022] [Indexed: 11/13/2022] Open
Abstract
Parkinson’s disease (PD) is the second most common neurodegenerative disease. Treatment of PD is challenging, as current treatment strategies are only symptomatic and do not stop disease development. Recent studies reported neuroprotective effects of calcitriol in PD through its antioxidant and anti-inflammatory properties. The exact pathomechanisms of PD are not yet fully understood. So, investigation of different molecular pathways is challenging. Sirtuin-1 (Sirt1) modulates multiple physiological processes, including programmed cell death, DNA repair, and inflammation. Furthermore, defective autophagy is considered a key pathomechanism in PD as it eliminates protein aggregation and dysfunctional cell organelles. The present study investigated the involvement of autophagy and Sirt1/NF-κB molecular pathway in rotenone-induced PD and explored the protective and restorative effects of calcitriol through these mechanisms. Therefore, behavioral tests were used to test the effect of calcitriol on motor disability and equilibrium. Furthermore, the histological and neuronal architecture was assessed. The expression of genes encoding neuroinflammation and autophagy markers was determined by qPCR while their protein levels were determined by Western blot analysis and immune-histochemical staining. Our results indicate that behavioral impairments and dopaminergic neuron depletion in the rotenone-induced PD model were improved by calcitriol administration. Furthermore, calcitriol attenuated rotenone-induced neuroinflammation and autophagy dysfunction in PD rats through up-regulation of Sirt1 and LC3 and down-regulation of P62 and NF-κB expression levels. Thus, calcitriol could induce a neuro-protective and restorative effect in the rotenone-induced PD model by modulating autophagy and Sirt1/NF-κB pathway.
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Affiliation(s)
- Alshimaa Magdy
- Department of Medical Biochemistry, Faculty of Medicine, Mansoura University, Mansoura, Egypt
- *Correspondence: Alshimaa Magdy,
| | - Eman A. E. Farrag
- Department of Pharmacology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Shereen Mohamed Hamed
- Department of Medical Histology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Zienab Abdallah
- Department of Medical Physiology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Eman Mohamad El Nashar
- Department of Anatomy, College of Medicine, King Khalid University, Abha, Saudi Arabia
- Department of Histology and Cell Biology, Faculty of Medicine, Benha University, Benha, Egypt
| | - Mansour Abdullah Alghamdi
- Department of Anatomy, College of Medicine, King Khalid University, Abha, Saudi Arabia
- Genomics and Personalized Medicine Unit, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Amira A. H. Ali
- Department of Human Anatomy and Embryology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
- Institute of Anatomy ll, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - Marwa Abd El-kader
- Department of Human Anatomy and Embryology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
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5
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Effect of Vitamin D on Graft-versus-Host Disease. Biomedicines 2022; 10:biomedicines10050987. [PMID: 35625724 PMCID: PMC9138416 DOI: 10.3390/biomedicines10050987] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/12/2022] [Accepted: 04/21/2022] [Indexed: 11/29/2022] Open
Abstract
The different cell subsets of the immune system express the vitamin D receptor (VDR). Through the VDR, vitamin D exerts different functions that influence immune responses, as previously shown in different preclinical models. Based on this background, retrospective studies explored the impacts of vitamin D levels on the outcomes of patients undergoing allogeneic hematopoietic stem-cell transplantation, showing that vitamin D deficiency is related to an increased risk of complications, especially graft-versus-host disease. These results were confirmed in a prospective cohort trial, although further studies are required to confirm this data. In addition, the role of vitamin D on the treatment of hematologic malignancies was also explored. Considering this dual effect on both the immune systems and tumor cells of patients with hematologic malignancies, vitamin D might be useful in this setting to decrease both graft-versus-host disease and relapse rates.
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6
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Ribeiro MC, MacDonald JL. Vitamin D modulates cortical transcriptome and behavioral phenotypes in an Mecp2 heterozygous Rett syndrome mouse model. Neurobiol Dis 2022; 165:105636. [PMID: 35091041 PMCID: PMC8864637 DOI: 10.1016/j.nbd.2022.105636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 01/19/2022] [Accepted: 01/21/2022] [Indexed: 12/14/2022] Open
Abstract
Rett syndrome (RTT) is an X-linked neurological disorder caused by mutations in the transcriptional regulator MECP2. Mecp2 loss-of-function leads to the disruption of many cellular pathways, including aberrant activation of the NF-κB pathway. Genetically attenuating the NF-κB pathway in Mecp2-null mice ameliorates hallmark phenotypes of RTT, including reduced dendritic complexity, raising the question of whether NF-κB pathway inhibitors could provide a therapeutic avenue for RTT. Vitamin D is a known inhibitor of NF-κB signaling; further, vitamin D deficiency is prevalent in RTT patients and male Mecp2-null mice. We previously demonstrated that vitamin D rescues the aberrant NF-κB activity and reduced neurite outgrowth of Mecp2-knockdown cortical neurons in vitro, and that dietary vitamin D supplementation rescues decreased dendritic complexity and soma size of neocortical projection neurons in both male hemizygous Mecp2-null and female heterozygous mice in vivo. Here, we have identified over 200 genes whose dysregulated expression in the Mecp2+/- cortex is modulated by dietary vitamin D. Genes normalized with vitamin D supplementation are involved in dendritic complexity, synapses, and neuronal projections, suggesting that the rescue of their expression could underpin the rescue of neuronal morphology. Further, there is a disruption in the homeostasis of the vitamin D synthesis pathway in Mecp2+/- mice, and motor and anxiety-like behavioral phenotypes in Mecp2+/- mice correlate with circulating vitamin D levels. Thus, our data indicate that vitamin D modulates RTT pathology and its supplementation could provide a simple and cost-effective partial therapeutic for RTT.
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Affiliation(s)
- Mayara C Ribeiro
- Department of Biology, Program in Neuroscience, Syracuse University, Syracuse, NY 13244, United States of America
| | - Jessica L MacDonald
- Department of Biology, Program in Neuroscience, Syracuse University, Syracuse, NY 13244, United States of America.
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Nwosu BU. Guidance for high-dose vitamin D supplementation for prolonging the honeymoon phase in children and adolescents with new-onset type 1 diabetes. Front Endocrinol (Lausanne) 2022; 13:974196. [PMID: 36060956 PMCID: PMC9433871 DOI: 10.3389/fendo.2022.974196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 07/20/2022] [Indexed: 11/13/2022] Open
Abstract
The publication of our recent randomized controlled trial (RCT) showing that vitamin D could protect the β-cells during the honeymoon phase of type 1 diabetes (T1D) has led to calls for guidance for vitamin D supplementation during the critical phase of type 1 diabetes. Prolonging the partial clinical remission (PR) phase of TID improves glycemic control and reduces long-term complications of T1D. This RCT randomized 36 children and adolescents to either receive vitamin D2 (ergocalciferol, given as 50,000 international units per week for 2 months and then every other week for 10 months) or a placebo. The results showed that vitamin D significantly decreased the temporal rise in both hemoglobin A1c at a mean rate of changes of 0.14% every 3 months versus 0.46% every 3 months for the placebo group (p=0.044); and in the functional marker of PR, the insulin-dose adjusted A1c at a mean rate of change of 0.30% every 3 months versus 0.77% every 3 months for the placebo group, (p=0.015). We recommend a baseline estimation of 25(OH)D concentration at the time of diagnosis of T1D, and to begin vitamin D supplementation if serum 25(OH)D concentration is <30 ng/mL, to maintain serum 25(OH)D concentrations between 30-60 ng/mL. If serum 25(OH)D concentration is >30 ng/mL, monitor vitamin D status with serial 25(OH)D estimations; and initiate vitamin D supplementation if serum 25(OH)D concentrations drop to <30 ng/mL. Continue vitamin D supplementation for at least one year to ensure optimal benefit from vitamin D supplementation during the partial clinical remission phase of type 1 diabetes.
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Affiliation(s)
- Benjamin Udoka Nwosu
- Division of Endocrinology, Department of Pediatrics, Zucker School of Medicine at Hofstra/Northwell, New Hyde Park, NY, United States
- Division of Pediatric Endocrinology, Department of Pediatrics, University of Massachusetts Medical School, Worcester, MA, United States
- *Correspondence: Benjamin Udoka Nwosu,
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Luce S, Guinoiseau S, Gadault A, Letourneur F, Nitschke P, Bras M, Vidaud M, Charneau P, Larger E, Colli ML, Eizirik DL, Lemonnier F, Boitard C. A Humanized Mouse Strain That Develops Spontaneously Immune-Mediated Diabetes. Front Immunol 2021; 12:748679. [PMID: 34721418 PMCID: PMC8551915 DOI: 10.3389/fimmu.2021.748679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 09/22/2021] [Indexed: 12/03/2022] Open
Abstract
To circumvent the limitations of available preclinical models for the study of type 1 diabetes (T1D), we developed a new humanized model, the YES-RIP-hB7.1 mouse. This mouse is deficient of murine major histocompatibility complex class I and class II, the murine insulin genes, and expresses as transgenes the HLA-A*02:01 allele, the diabetes high-susceptibility HLA-DQ8A and B alleles, the human insulin gene, and the human co-stimulatory molecule B7.1 in insulin-secreting cells. It develops spontaneous T1D along with CD4+ and CD8+ T-cell responses to human preproinsulin epitopes. Most of the responses identified in these mice were validated in T1D patients. This model is amenable to characterization of hPPI-specific epitopes involved in T1D and to the identification of factors that may trigger autoimmune response to insulin-secreting cells in human T1D. It will allow evaluating peptide-based immunotherapy that may directly apply to T1D in human and complete preclinical model availability to address the issue of clinical heterogeneity of human disease.
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Affiliation(s)
- Sandrine Luce
- Laboratory Immunology of Diabetes, INSERMU1016, Department EMD, Cochin Institute, Paris, France.,Medical Faculty, Paris University, Paris, France
| | - Sophie Guinoiseau
- Laboratory Immunology of Diabetes, INSERMU1016, Department EMD, Cochin Institute, Paris, France.,Medical Faculty, Paris University, Paris, France
| | - Alexis Gadault
- Laboratory Immunology of Diabetes, INSERMU1016, Department EMD, Cochin Institute, Paris, France.,Medical Faculty, Paris University, Paris, France
| | - Franck Letourneur
- Laboratory Immunology of Diabetes, INSERMU1016, Department EMD, Cochin Institute, Paris, France
| | | | - Marc Bras
- Medical Faculty, Paris University, Paris, France
| | - Michel Vidaud
- Biochemistry and Molecular Genetics Department, Cochin Hospital, Paris, France
| | - Pierre Charneau
- Molecular Virology and Vaccinology, Pasteur Institute, Paris, France
| | - Etienne Larger
- Laboratory Immunology of Diabetes, INSERMU1016, Department EMD, Cochin Institute, Paris, France.,Diabetology Department, Cochin Hospital, Paris, France
| | - Maikel L Colli
- Université Libre de Bruxelles (ULB) Center for Diabetes Research, Medical Faculty, Université Libre de Bruxelles, Brussels, Belgium
| | - Decio L Eizirik
- Université Libre de Bruxelles (ULB) Center for Diabetes Research, Medical Faculty, Université Libre de Bruxelles, Brussels, Belgium.,Diabetes Center, Indiana Biosciences Research Institute (IBRI), Indianapolis, IN, United States
| | - François Lemonnier
- Laboratory Immunology of Diabetes, INSERMU1016, Department EMD, Cochin Institute, Paris, France.,Medical Faculty, Paris University, Paris, France
| | - Christian Boitard
- Laboratory Immunology of Diabetes, INSERMU1016, Department EMD, Cochin Institute, Paris, France.,Medical Faculty, Paris University, Paris, France.,Diabetology Department, Cochin Hospital, Paris, France
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Ding F, Luo X, Tu Y, Duan X, Liu J, Jia L, Zheng P. Alpk1 Sensitizes Pancreatic Beta Cells to Cytokine-Induced Apoptosis via Upregulating TNF-α Signaling Pathway. Front Immunol 2021; 12:705751. [PMID: 34621265 PMCID: PMC8490819 DOI: 10.3389/fimmu.2021.705751] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 09/06/2021] [Indexed: 11/13/2022] Open
Abstract
Pancreatic beta cell failure is the hallmark of type 1 diabetes (T1D). Recent studies have suggested that pathogen recognizing receptors (PRRs) are involved in the survival, proliferation and function of pancreatic beta cells. So far, little is known about the role of alpha-protein kinase 1 (ALPK1), a newly identified cytosolic PRR specific for ADP-β-D-manno-heptose (ADP-heptose), in beta cell survival. In current study we aimed to fill the knowledge gap by investigating the role of Alpk1 in the apoptosis of MIN6 cells, a murine pancreatic beta cell line. We found that the expression of Alpk1 was significantly elevated in MIN6 cells exposed to pro-inflammatory cytokines, but not to streptozotocin, low-dose or high-dose glucose. Activation of Alpk1 by ADP heptose alone was insufficient to induce beta cell apoptosis. However, it significantly exacerbated cytokine-induced apoptosis in MIN6 cells. Mechanistic investigations showed that Alpk1 activation was potent to further induce the expression of tumor necrosis factor (TNF)-α and Fas after cytokine stimulation, possibly due to enhanced activation of the TIFA/TAK1/NF-κB signaling axis. Treatment of GLP-1 receptor agonist decreased the expression of TNF-α and Fas and improved the survival of beta cells exposed to pro-inflammatory cytokines and ADP heptose. In summary, our data suggest that Alpk1 sensitizes beta cells to cytokine-induced apoptosis by potentiating TNF-α signaling pathway, which may provide novel insight into beta cell failure and T1D development.
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Affiliation(s)
- Fei Ding
- Department of Endocrinology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Xi Luo
- Department of Endocrinology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Yiting Tu
- Department of Neurology, Shenzhen Samii International Medical Center (The Fourth People's Hospital of Shenzhen), Shenzhen, China
| | - Xianlan Duan
- Department of Endocrinology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Jia Liu
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Lijing Jia
- Department of Endocrinology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Peilin Zheng
- Department of Endocrinology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
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Vitamin D Regulates the Expression of Glucocorticoid Receptors in Blood of Severe Asthmatic Patients. J Immunol Res 2021; 2021:9947370. [PMID: 34395637 PMCID: PMC8363450 DOI: 10.1155/2021/9947370] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 07/17/2021] [Indexed: 01/02/2023] Open
Abstract
Purpose Vitamin D (VitD) deficiency is a significant public health concern in many areas around the globe and has been associated with many immune-mediated diseases, including asthma. Severe asthma has been linked to a decreased glucocorticoid receptor (GR) ratio (GR-α/GR-β ratio), indicating steroid hyporesponsiveness. Using a combination of in silico and in vivo approaches, we aimed to explore the immunomodulatory effect of VitD on asthmatic patients diagnosed with hypovitaminosis D. Methods In silico tools were used to identify the regulatory effect of VitD supplementation on GR genes. We measured the expression levels of GR-α and the inactive isoform, GR-β, in the blood of adult asthmatics diagnosed with hypovitaminosis D before and after VitD supplementation. Moreover, the blood levels of inflammatory cytokines associated with asthma severity were determined. Results Using an in silico approach, we identified specific genes commonly targeted by VitD as well as corticosteroids, the mainstay of asthma therapy. NR3C1 gene encoding GR was found to be significantly upregulated on Th2 CD4 cells and NK cells. Interestingly, blood expression level of NR3C1 was lower in severe asthmatics compared to nonsevere asthmatics and healthy controls, while the blood level of VitD receptor (VDR) was higher. Upon VitD supplementation of severe asthmatic patients, there was a significant increase in the blood levels of GR-α with no change in GR-β mRNA expression. VitD supplementation also suppressed the blood levels of IL-17F and IL-4. Conclusion VitD may enhance steroid responsiveness by upregulating the expression of steroid receptor GR-α.
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Goswami S, Flores J, Balasubramanian I, Bandyopadhyay S, Joseph I, Bianchi-Smak J, Dhawan P, Mücahit DM, Yu S, Christakos S, Gao N. 1,25-Dihydroxyvitamin D 3 and dietary vitamin D reduce inflammation in mice lacking intestinal epithelial cell Rab11a. J Cell Physiol 2021; 236:8148-8159. [PMID: 34192357 PMCID: PMC9161497 DOI: 10.1002/jcp.30486] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 05/18/2021] [Accepted: 06/15/2021] [Indexed: 12/23/2022]
Abstract
A number of studies have examined the effects of 1,25-dihydroxyvitamin D3 (1,25(OH)2 D3 ) on intestinal inflammation driven by immune cells, while little information is currently available about its impact on inflammation caused by intestinal epithelial cell (IEC) defects. Mice lacking IEC-specific Rab11a a recycling endosome small GTPase resulted in increased epithelial cell production of inflammatory cytokines, notably IL-6 and early onset of enteritis. To determine whether vitamin D supplementation may benefit hosts with epithelial cell-originated mucosal inflammation, we evaluated in vivo effects of injected 1,25(OH)2 D3 or dietary supplement of a high dose of vitamin D on the gut phenotypes of IEC-specific Rab11a knockout mice (Rab11aΔIEC ). 1,25(OH)2 D3 administered at 25 ng, two doses per mouse, by intraperitoneal injection, reduced inflammatory cytokine production in knockout mice compared to vehicle-injected mice. Remarkably, feeding mice with dietary vitamin D supplementation at 20,000 IU/kg spanning fetal and postnatal developmental stages led to improved bodyweights, reduced immune cell infiltration, and decreased inflammatory cytokines. We found that these vitamin D effects were accompanied by decreased NF-κB (p65) in the knockout intestinal epithelia, reduced tissue-resident macrophages, and partial restoration of epithelial morphology. Our study suggests that dietary vitamin D supplementation may prevent and limit intestinal inflammation in hosts with high susceptibility to chronic inflammation.
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Affiliation(s)
- Sayantani Goswami
- Department of Biological Sciences, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Juan Flores
- Department of Biological Sciences, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Iyshwarya Balasubramanian
- Department of Biological Sciences, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Sheila Bandyopadhyay
- Department of Biological Sciences, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Ivor Joseph
- Department of Biological Sciences, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Jared Bianchi-Smak
- Department of Biological Sciences, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Puneet Dhawan
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
| | - Derya M Mücahit
- Department of Biological Sciences, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Shiyan Yu
- Department of Biological Sciences, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Sylvia Christakos
- Department of Microbiology, Biochemistry and Molecular Genetics, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
| | - Nan Gao
- Department of Biological Sciences, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
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Hu X, Hu C, Liu J, Wu Z, Duan T, Cao Z. 1,25-(OH)2D3 protects pancreatic beta cells against H2O2-induced apoptosis through inhibiting the PERK-ATF4-CHOP pathway. Acta Biochim Biophys Sin (Shanghai) 2021; 53:46-53. [PMID: 33242093 DOI: 10.1093/abbs/gmaa138] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Indexed: 02/07/2023] Open
Abstract
Endoplasmic reticulum (ER) stress plays a critical role in pancreatic β cell destruction which leads to the pathogenesis of type 1 diabetes mellitus (T1DM). Vitamin D (VD) has been reported to reduce the risk of T1DM; however, it remains unknown whether VD affects ER stress in pancreatic β cells. In this study, we investigated the role of the active form of VD, 1,25-dihydroxyvitamin D3 [1,25-(OH)2D3], in ER stress-induced β cell apoptosis and explored its potential mechanism in mouse insulinoma cell line mouse insulinoma 6 (MIN6). The results of cell counting kit-8 (CCK8) and flow cytometric analyses showed that 1,25-(OH)2D3 caused a significant increase in the viability of MIN6 cells injured by H2O2. The protein kinase like ER kinase (PERK) signal pathway, one of the most conserved branches of ER stress, was found to be involved in this process. H2O2 activated the phosphorylation of PERK, upregulated the activating transcription factor 4 (ATF4) and C/EBP homologous protein (CHOP) expression, and subsequently initiated cell apoptosis, which were significantly reversed by 1,25-(OH)2D3 pretreatment. In addition, GSK2606414, a specific inhibitor of PERK, suppressed PERK phosphorylation and reduced the expressions of ATF4 and CHOP, leading to a significant decrease in β cell apoptosis induced by H2O2. Taken together, the present findings firstly demonstrated that 1,25-(OH)2D3 could prevent MIN6 cells against ER stress-associated apoptosis by inhibiting the PERK-ATF4-CHOP pathway. Therefore, our results suggested that 1,25-(OH)2D3 might serve as a potential therapeutic target for preventing pancreatic β cell destruction in T1DM.
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Affiliation(s)
- Xiaobo Hu
- The Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, Department of Biochemistry, Hengyang Medical School, University of South China, Hengyang 421001, China
- Department of Biochemistry, Hengyang Medical School, University of South China, Hengyang 421001, China
- The Key Laboratory of Typical Environmental Pollution and Health Hazards, University of South China, Hengyang 421001, China
| | - Cong Hu
- The Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, Department of Biochemistry, Hengyang Medical School, University of South China, Hengyang 421001, China
- Department of Biochemistry, Hengyang Medical School, University of South China, Hengyang 421001, China
- The Key Laboratory of Typical Environmental Pollution and Health Hazards, University of South China, Hengyang 421001, China
| | - Jun Liu
- The Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, Department of Biochemistry, Hengyang Medical School, University of South China, Hengyang 421001, China
- Department of Biochemistry, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Zhuan Wu
- The Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, Department of Biochemistry, Hengyang Medical School, University of South China, Hengyang 421001, China
- Department of Biochemistry, Hengyang Medical School, University of South China, Hengyang 421001, China
- The Key Laboratory of Typical Environmental Pollution and Health Hazards, University of South China, Hengyang 421001, China
| | - Tingting Duan
- The Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, Department of Biochemistry, Hengyang Medical School, University of South China, Hengyang 421001, China
- Department of Biochemistry, Hengyang Medical School, University of South China, Hengyang 421001, China
- The Key Laboratory of Typical Environmental Pollution and Health Hazards, University of South China, Hengyang 421001, China
| | - Zhaohui Cao
- The Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province Department of Education, Department of Biochemistry, Hengyang Medical School, University of South China, Hengyang 421001, China
- Department of Biochemistry, Hengyang Medical School, University of South China, Hengyang 421001, China
- The Key Laboratory of Typical Environmental Pollution and Health Hazards, University of South China, Hengyang 421001, China
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13
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Cristelo C, Machado A, Sarmento B, Gama FM. The roles of vitamin D and cathelicidin in type 1 diabetes susceptibility. Endocr Connect 2021; 10:R1-R12. [PMID: 33263562 PMCID: PMC7923048 DOI: 10.1530/ec-20-0484] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 11/25/2020] [Indexed: 12/20/2022]
Abstract
Type 1 diabetes has an increasingly greater incidence and prevalence with no cure available. Vitamin D supplementation is well documented to reduce the risk of developing type 1 diabetes. Being involved in the modulation of cathelicidin expression, the question whether cathelicidin may be one of the underlying cause arises. Cathelicidin has been implicated in both the development and the protection against type 1 diabetes by mediating the interplay between the gut microbiome, the immune system and β cell function. While its potential on type 1 diabetes treatment seems high, the understanding of its effects is still limited. This review aims to contribute to a more comprehensive understanding of the potential of vitamin D and cathelicidin as adjuvants in type 1 diabetes therapy.
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Affiliation(s)
- Cecília Cristelo
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- CEB – Centro de Engenharia Biológica, Universidade do Minho, Braga, Portugal
| | - Alexandra Machado
- CEB – Centro de Engenharia Biológica, Universidade do Minho, Braga, Portugal
| | - Bruno Sarmento
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde & Instituto Universitário de Ciências da Saúde, Gandra, Portugal
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14
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Zhang X, Gao B, Xu B. No association between the vitamin D-binding protein (DBP) gene polymorphisms (rs7041 and rs4588) and multiple sclerosis and type 1 diabetes mellitus: A meta-analysis. PLoS One 2020; 15:e0242256. [PMID: 33180889 PMCID: PMC7661054 DOI: 10.1371/journal.pone.0242256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 10/29/2020] [Indexed: 01/05/2023] Open
Abstract
Background The association between polymorphisms in vitamin D-binding protein (DBP) gene and the risk of multiple sclerosis (MS) and type 1 diabetes mellitus (T1DM) has been investigated in many studies, but the studies showed controversial results. The rationale for this meta-analysis was to determine whether DBP polymorphisms increases the risk of MS and T1DM by pooling data. Methods Potentially relevant studies were searched using GWAS Catalog, PubMed, Embase, CNKI and WANFANG databases up to November 2019. The pooled odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were performed to estimate the associations in a fixed-effects or random-effects model. Results A total of 13 studies were enrolled in this meta-analysis, including eight studies for MS and five for T1DM. The overall results showed that there was no significant association of DBP rs7041 and rs4588 polymorphisms with the risk of MS and T1DM under any genetic model. Similarly, subgroup analysis by ethnicity revealed that no significant association of rs7041 and rs4588 polymorphisms with the risk of MS and T1DM was observed in white or non-white racial groups. Conclusions This meta-analysis provides evidence that DBP rs7041 and rs4588 polymorphisms may not be associated with an increased risk in MS and T1DM. However, these findings need further validation by larger-scale epidemiological studies and genome-wide association studies (GWASs) in different populations.
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Affiliation(s)
- Xin Zhang
- Department of Neurology, Shenyang First People’s Hospital, Shenyang, Liaoning Province, China
| | - Bai Gao
- Department of Nerve Function, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Bing Xu
- Department of Neurology, Shenyang First People’s Hospital, Shenyang, Liaoning Province, China
- * E-mail:
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15
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Effect of vitamin D supplementation on pancreatic β-cell destruction and type 1 diabetes. Chin Med J (Engl) 2020; 134:41-43. [PMID: 33395073 PMCID: PMC7862805 DOI: 10.1097/cm9.0000000000001239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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16
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Wu X, Zhang H, Zhang S, Yuan J, Liu J, Tang J, Li YC, Sun J. Vitamin D receptor is negatively correlated with interferon-γ-inducible protein-10 in systemic lupus erythematosus with renal involvement. EUR J INFLAMM 2020. [DOI: 10.1177/2058739220942333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The vitamin D receptor (VDR) plays an important role in the pathogenesis of systemic lupus erythematosus (SLE) mainly due to its anti-inflammatory and immunomodulatory activities. Interferon-inducible protein-10 (IP-10) is a chemokine found to be increased in SLE patients and correlated with severity of lupus nephritis. In this case control study, we investigated the connection between VDR expression and chemokine IP-10 in peripheral blood mononuclear cells (PBMCs) of SLE patients with or without renal involvement. 62 SLE patients and 30 healthy subjects were enrolled between 2014 and 2016. PBMC VDR mRNA and IP-10 mRNA were quantified by real-time PCR. PBMC VDR protein was measured by Western blotting. PBMC VDR mRNA and protein were downregulated, whereas IP-10 mRNA was upregulated in SLE patients with renal involvement. VDR mRNA levels were negatively correlated with systemic lupus international collaborating clinics (SLICC) renal activity scores (r = −0.423, P = 0.016) and IP-10 mRNA levels (r = −0.428, P = 0.008) in SLE with renal involvement. This study demonstrates that PBMC VDR was negatively correlated with SLICC renal activity and chemokine IP-10 in SLE patients with renal involvement which suggests that VDR downregulation may be used as an indicator of renal injury in SLE patients.
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Affiliation(s)
- Xueqin Wu
- Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hao Zhang
- Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Shuang Zhang
- Department of Nephrology, The First People’s Hospital of Changde City, Changde, Hunan, China
| | - Jinzhong Yuan
- Department of Rheumatology and Immunology, The Third Xiangya Hospital, Central South University, Changsha,Hunan, China
| | - Jishi Liu
- Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Juan Tang
- Department of Rheumatology and Immunology, The Third Xiangya Hospital, Central South University, Changsha,Hunan, China
| | - Yan Chun Li
- Department of Medicine, Division of Biological Sciences, The University of Chicago, Chicago, IL, USA
| | - Jian Sun
- Department of Rheumatology and Immunology, The Third Xiangya Hospital, Central South University, Changsha,Hunan, China
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17
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Trombetta AC, Paolino S, Cutolo M. Vitamin D, Inflammation and Immunity: Review of Literature and Considerations on Recent Translational and Clinical Research Developments. Open Rheumatol J 2018. [DOI: 10.2174/1874312901812010201] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The most relevant and recent literature findings linking exposure to sunlight, Vitamin D (VD), inflammation and immune system in health and disease, are reviewed.Reduced sunlight exposure determined hypo-vitaminosis D to be common among patients or even healthy subjects, especially at higher latitudes. Numerous studies support the hypothesis that VD insufficiency could contribute to the higher autoimmune diseases incidence in the same geographic areas.In the present review, the ways in which VD was reported to influence immune system, contributing to organism homeostasis or disease development are addressed. In fact, some of the hormone activities were recognised to determine stimulation or inhibition of immune system components.Several diseases, where an association with VD deficiency was studied, are summarised. Finally, the rationale for optimization of substitutive/additive therapy with VD analogues and the last innovations regarding these drugs are mentioned.
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18
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Liu M, Peng J, Tai N, Pearson JA, Hu C, Guo J, Hou L, Zhao H, Wong FS, Wen L. Toll-like receptor 9 negatively regulates pancreatic islet beta cell growth and function in a mouse model of type 1 diabetes. Diabetologia 2018; 61:2333-2343. [PMID: 30094467 PMCID: PMC6182661 DOI: 10.1007/s00125-018-4705-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 07/02/2018] [Indexed: 12/12/2022]
Abstract
AIMS/HYPOTHESIS Innate immune effectors interact with the environment to contribute to the pathogenesis of the autoimmune disease, type 1 diabetes. Although recent studies have suggested that innate immune Toll-like receptors (TLRs) are involved in tissue development, little is known about the role of TLRs in tissue development, compared with autoimmunity. We aimed to fill the knowledge gap by investigating the role of TLR9 in the development and function of islet beta cells in type 1 diabetes, using NOD mice. METHODS We generated Tlr9-/- NOD mice and examined them for type 1 diabetes development and beta cell function, including insulin secretion and glucose tolerance. We assessed islet and beta cell number and characterised CD140a expression on beta cells by flow cytometry. We also tested beta cell function in Tlr9-/- C57BL/6 mice. Finally, we used TLR9 antagonists to block TLR9 signalling in wild-type NOD mice to verify the role of TLR9 in beta cell development and function. RESULTS TLR9 deficiency promoted pancreatic islet development and beta cell differentiation, leading to enhanced glucose tolerance, improved insulin sensitivity and enhanced first-phase insulin secretory response. This was, in part, mediated by upregulation of CD140a (also known as platelet-derived growth factor receptor-α [PDGFRα]). In the absence of TLR9, induced by either genetic targeting or treatment with TLR9 antagonists, which had similar effects on ontogenesis and function of beta cells, NOD mice were protected from diabetes. CONCLUSIONS/INTERPRETATION Our study links TLR9 and the CD140a pathway in regulating islet beta cell development and function and indicates a potential therapeutic target for diabetes prevention and/or treatment.
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Affiliation(s)
- Mengju Liu
- Section of Endocrinology, Department of Internal Medicine, Yale School of Medicine, Yale University, 300 Cedar Street, New Haven, CT, 06520, USA
| | - Jian Peng
- Section of Endocrinology, Department of Internal Medicine, Yale School of Medicine, Yale University, 300 Cedar Street, New Haven, CT, 06520, USA
| | - Ningwen Tai
- Section of Endocrinology, Department of Internal Medicine, Yale School of Medicine, Yale University, 300 Cedar Street, New Haven, CT, 06520, USA
| | - James A Pearson
- Section of Endocrinology, Department of Internal Medicine, Yale School of Medicine, Yale University, 300 Cedar Street, New Haven, CT, 06520, USA
| | - Changyun Hu
- Section of Endocrinology, Department of Internal Medicine, Yale School of Medicine, Yale University, 300 Cedar Street, New Haven, CT, 06520, USA
- Jounce Therapeutics Inc., Cambridge, MA, USA
| | - Junhua Guo
- Section of Endocrinology, Department of Internal Medicine, Yale School of Medicine, Yale University, 300 Cedar Street, New Haven, CT, 06520, USA
- Department of Rheumatology, PLA General Hospital, Beijing, People's Republic of China
| | - Lin Hou
- Jounce Therapeutics Inc., Cambridge, MA, USA
| | - Hongyu Zhao
- Department of Bioinformatics, Yale School of Public Health, Yale University, New Haven, CT, USA
| | - F Susan Wong
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, CF14 4XN, UK.
| | - Li Wen
- Section of Endocrinology, Department of Internal Medicine, Yale School of Medicine, Yale University, 300 Cedar Street, New Haven, CT, 06520, USA.
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19
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Luce S, Guinoiseau S, Gadault A, Letourneur F, Blondeau B, Nitschke P, Pasmant E, Vidaud M, Lemonnier F, Boitard C. Humanized Mouse Model to Study Type 1 Diabetes. Diabetes 2018; 67:1816-1829. [PMID: 29967002 DOI: 10.2337/db18-0202] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 06/15/2018] [Indexed: 12/15/2022]
Abstract
Key requirements in type 1 diabetes (T1D) are in setting up new assays as diagnostic biomarkers that will apply to prediabetes, likely T-cell assays, and in designing antigen-specific therapies to prevent T1D development. New preclinical models of T1D will be required to help with advancing both aims. By crossing mouse strains that lack either murine MHC class I and class II genes and insulin genes, we developed YES mice that instead express human HLA-A*02:01, HLA-DQ8, and insulin genes as transgenes. The metabolic and immune phenotype of YES mice is basically identical to that of the parental strains. YES mice remain insulitis and diabetes free up to 1 year of follow-up, maintain normoglycemia to an intraperitoneal glucose challenge in the long-term range, have a normal β-cell mass, and show normal immune responses to conventional antigens. This new model has been designed to evaluate adaptive immune responses to human insulin on a genetic background that recapitulates a human high-susceptibility HLA-DQ8 genetic background. Although insulitis free, YES mice develop T1D when challenged with polyinosinic-polycytidylic acid. They allow the characterization of preproinsulin epitopes recognized by CD8+ and CD4+ T cells upon immunization against human preproinsulin or during diabetes development.
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MESH Headings
- Adaptive Immunity/drug effects
- Aging
- Animals
- Autoimmune Diseases/immunology
- Autoimmune Diseases/metabolism
- Autoimmune Diseases/pathology
- Autoimmune Diseases/physiopathology
- Biomarkers/blood
- Biomarkers/metabolism
- Crosses, Genetic
- Diabetes Mellitus, Type 1/immunology
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/pathology
- Diabetes Mellitus, Type 1/physiopathology
- Disease Models, Animal
- Disease Progression
- Female
- HLA-A2 Antigen/genetics
- HLA-A2 Antigen/metabolism
- HLA-DQ Antigens/blood
- HLA-DQ Antigens/genetics
- HLA-DQ Antigens/metabolism
- Humans
- Insulin/blood
- Insulin/genetics
- Insulin/metabolism
- Islets of Langerhans/immunology
- Islets of Langerhans/metabolism
- Islets of Langerhans/pathology
- Islets of Langerhans/physiopathology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Inbred NOD
- Mice, Knockout
- Mice, Transgenic
- Poly I-C/toxicity
- Prediabetic State/immunology
- Prediabetic State/metabolism
- Prediabetic State/pathology
- Prediabetic State/physiopathology
- Protein Precursors/blood
- Protein Precursors/genetics
- Protein Precursors/metabolism
- Specific Pathogen-Free Organisms
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Affiliation(s)
- Sandrine Luce
- INSERM U1016, Institut Cochin, Paris, France
- Faculté de Médecine René Descartes, Université Paris Descartes, Paris, France
| | - Sophie Guinoiseau
- INSERM U1016, Institut Cochin, Paris, France
- Faculté de Médecine René Descartes, Université Paris Descartes, Paris, France
| | - Alexis Gadault
- INSERM U1016, Institut Cochin, Paris, France
- Faculté de Médecine René Descartes, Université Paris Descartes, Paris, France
| | | | | | - Patrick Nitschke
- Faculté de Médecine René Descartes, Université Paris Descartes, Paris, France
| | - Eric Pasmant
- Faculté de Médecine René Descartes, Université Paris Descartes, Paris, France
- Service de Biochimie et Génétique Moléculaire, Hôpital COCHIN, Paris, France
| | - Michel Vidaud
- Service de Biochimie et Génétique Moléculaire, Hôpital COCHIN, Paris, France
| | - François Lemonnier
- INSERM U1016, Institut Cochin, Paris, France
- Faculté de Médecine René Descartes, Université Paris Descartes, Paris, France
| | - Christian Boitard
- INSERM U1016, Institut Cochin, Paris, France
- Faculté de Médecine René Descartes, Université Paris Descartes, Paris, France
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20
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Gilchrist A, Stern PH. Editorial: Chemokines and Bone. Front Endocrinol (Lausanne) 2018; 9:386. [PMID: 30072949 PMCID: PMC6060257 DOI: 10.3389/fendo.2018.00386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 06/25/2018] [Indexed: 11/29/2022] Open
Affiliation(s)
- Annette Gilchrist
- Department of Pharmaceutical Sciences, Midwestern University, Downers Grove, IL, United States
| | - Paula H. Stern
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
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21
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Mousa A, de Courten MPJ, Forbes J, de Courten B. Serum 25-hydroxyvitamin D concentrations are associated with nuclear factor kappa-B activity but not with inflammatory markers in healthy normoglycemic adults. J Steroid Biochem Mol Biol 2018; 177:216-222. [PMID: 28732679 DOI: 10.1016/j.jsbmb.2017.07.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 06/30/2017] [Accepted: 07/15/2017] [Indexed: 01/06/2023]
Abstract
Vitamin D has been reported to have anti-inflammatory properties in in vitro and animal studies, which are thought to occur via inhibition of the nuclear factor kappa-B (NFκB) pathway. However, the association between vitamin D and in vivo NFκB activity in humans has not previously been reported. The aim of the present study was to examine the associations between circulating 25-hydroxyvitamin D (25(OH)D) concentrations and NFκB activity in peripheral blood mononuclear cells (PBMCs) as well as plasma inflammatory markers in healthy individuals. We hypothesized that 25(OH)D concentrations would be negatively associated with NFκB activity and pro-inflammatory markers downstream of NFκB, and positively associated with anti-inflammatory markers. We measured circulating 25(OH)D (chemiluminescent immunoassay); anthropometry: body mass index (BMI), waist-to-hip ratio (WHR), and % body fat (dual X-ray absorptiometry); plasma pro- and anti-inflammatory markers: high sensitivity C-reactive protein (hsCRP), tumor necrosis factor (TNF), monocyte chemoattractant protein-1 (MCP-1), interleukin-6 (IL-6), and IL-10 (ELISA); and NFκB activity in PBMCs (DNA-binding assay). Forty-nine participants were included in the study (21M/28F; age=31.6±10.2years (mean±SD); BMI=28.4±4.6kg/m2; % body fat=30.2±9.3%). Mean 25(OH)D concentration was 48.2±24.5 nmol/l. There were no differences in 25(OH)D concentrations between genders and no association between 25(OH)D concentrations and age, BMI, or % body fat (all p>0.1). Serum 25(OH)D concentrations were positively associated with NFκB activity in PBMCs (r=0.48, p=0.0008) but not with any of the pro- or anti-inflammatory markers measured (all p>0.1). After adjusting for age, sex, and % body fat, 25(OH)D concentrations remained positively associated with NFκB activity in PBMCs (β=0.55, p<0.0001). Although in-vitro studies suggest that vitamin D inhibits NFκB activity, our novel cross-sectional data from a cohort of healthy individuals suggest that vitamin D may regulate rather than inhibit the NFκB pathway. Large-scale intervention and mechanistic studies are needed to further investigate the effects of vitamin D on NFκB activity in vivo in humans.
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Affiliation(s)
- Aya Mousa
- Monash Centre for Health Research and Implementation (MCHRI), School of Public Health and Preventive Medicine, Monash University, 43-51 Kanooka Grove, Clayton, Melbourne, VIC 3168, Australia.
| | - Maximilian P J de Courten
- Centre for Chronic Disease, Victoria University, 176 Furlong Road, St Albans, Melbourne, VIC 3021, Australia.
| | - Josephine Forbes
- Mater Medical Research Institute, Level 3, Aubigny Place, Raymond Terrace, South Brisbane, QLD 4101, Australia.
| | - Barbora de Courten
- Monash Centre for Health Research and Implementation (MCHRI), School of Public Health and Preventive Medicine, Monash University, 43-51 Kanooka Grove, Clayton, Melbourne, VIC 3168, Australia.
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22
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Kraus AU, Penna-Martinez M, Meyer G, Badenhoop K. Vitamin D effects on monocytes' CCL-2, IL6 and CD14 transcription in Addison's disease and HLA susceptibility. J Steroid Biochem Mol Biol 2018; 177:53-58. [PMID: 28765037 DOI: 10.1016/j.jsbmb.2017.07.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/19/2017] [Accepted: 07/20/2017] [Indexed: 12/31/2022]
Abstract
Addison's disease is a rare autoimmune disorder leading to adrenal insufficiency and life-long glucocorticoid dependency. Vitamin D receptor (VDR) polymorphisms and vitamin D deficiency predispose to Addison's disease. Aim of the current study was, to investigate potential anti-inflammatory vitamin D effects on monocytes in Addison's disease, focusing on inflammatory CCL-2 and IL6, as well on monocyte CD14 markers. Addison's disease is genetically linked to distinct HLA susceptibility alleles. Therefore we analyzed, whether HLA genotypes differed for vitamin D effects on monocyte markers. CD14+ monocytes were isolated from Addison's disease patients (AD, n=13) and healthy controls (HC, n=15) and stimulated with 1,25-dihydroxyvitamin D3 and IL1β as an inflammatory stimulant. Cells were processed for mRNA expression of CCL-2, IL6 and CD14 and DNA samples were genotyped for major histocompatibility class (MHC) class II-encoded HLA- DQA1-DQB1 haplotypes. We found a downregulation of CCL-2 after vitamin D treatment in IL1β-stimulated monocytes both from AD patients and HC (AD p<0.001; HC p<0.0001). CD14 expression however, was upregulated in both HC and AD patients after vitamin D treatment (p<0.001, respectively). HC showed higher CD14 transcription level than AD patients after vitamin D treatment (p=0.04). Compared to IL1β-induced inflammation, HC have increased CD14 levels after vitamin D treatment (p<0.001), whereas the IL1β-induced CD14 expression of AD patients' monocytes did not change after vitamin D treatment (p=0.8). AD patients carrying HLA high-risk haplotypes showed an increased CCL-2 expression after IL1β-induced inflammation compared to intermediate-risk HLA carriers (p=0.05). Also HC monocytes' CD14 transcription after IL1β and vitamin D co-stimulation differed according to HLA risk profile. We show that vitamin D can exert anti-inflammatory effects on AD patients' monocytes which may be modulated by HLA risk genotypes.
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Affiliation(s)
- A U Kraus
- Department of Internal Medicine I, Division of Endocrinology, Diabetes and Metabolism, University Hospital Frankfurt, Germany.
| | - M Penna-Martinez
- Department of Internal Medicine I, Division of Endocrinology, Diabetes and Metabolism, University Hospital Frankfurt, Germany
| | - G Meyer
- Department of Internal Medicine I, Division of Endocrinology, Diabetes and Metabolism, University Hospital Frankfurt, Germany
| | - K Badenhoop
- Department of Internal Medicine I, Division of Endocrinology, Diabetes and Metabolism, University Hospital Frankfurt, Germany
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23
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Fathollahi A, Massoud A, Amirzargar AA, Aghili B, Nasli Esfahani E, Rezaei N. sICAM-1, sVCAM-1 and sE-Selectin Levels in Type 1 Diabetes. Fetal Pediatr Pathol 2018; 37:69-73. [PMID: 29336634 DOI: 10.1080/15513815.2017.1405467] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND/OBJECTIVE This study was performed to compare soluble levels of adhesion molecules between diabetic patients and controls and to assess their possible association with long-term complications of type 1 diabetes (T1D). METHODS Forty-eight patients with T1D and 39 healthy controls were enrolled in this study. The plasma level of adhesion molecules was measured by sandwich enzyme-linked immunosorbent assay technique. RESULTS Higher sVCAM 1 (soluble vascular cell adhesion molecule 1) levels correlated with older age of onset of T1D. The plasma level of sICAM 1 (soluble intercellular adhesion molecule 1) was significantly increased, while sE selectin was significantly decreased in patients with T1D, compared to controls. There was no significant relationship between these plasma-level variations and the long-term complications of T1D. CONCLUSION Although plasma levels of cell adhesion molecules are different in T1D patients and healthy controls, they might not be good candidate markers for prognosis of disease.
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Affiliation(s)
- Anwar Fathollahi
- a Department of Immunology, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran
| | - Ahmad Massoud
- a Department of Immunology, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran
| | - Ali Akbar Amirzargar
- a Department of Immunology, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran.,b Molecular Immunology Research Center , Tehran University of Medical Sciences , Tehran , Iran
| | - Babak Aghili
- a Department of Immunology, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran
| | - Ensieh Nasli Esfahani
- c Diabetes Research Center, Endocrinology and Metabolism Clinical Sciences Institute , Tehran University of Medical Sciences , Tehran , Iran.,d Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Research Institute , Tehran University of Medical Sciences , Tehran , Iran
| | - Nima Rezaei
- a Department of Immunology, School of Medicine , Tehran University of Medical Sciences , Tehran , Iran.,e Research Center for Immunodeficiencies, Children's Medical Center , Tehran University of Medical Sciences , Tehran , Iran.,f Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA) , Universal Scientific Education and Research Network (USERN) , Boston , MA , USA
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Altieri B, Grant WB, Della Casa S, Orio F, Pontecorvi A, Colao A, Sarno G, Muscogiuri G. Vitamin D and pancreas: The role of sunshine vitamin in the pathogenesis of diabetes mellitus and pancreatic cancer. Crit Rev Food Sci Nutr 2018; 57:3472-3488. [PMID: 27030935 DOI: 10.1080/10408398.2015.1136922] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Increasing evidence suggests that vitamin D exerts multiple effects beyond bone and calcium metabolism. Vitamin D seems to play a role in pancreatic disease, including type 1 and type 2 diabetes mellitus as well as pancreatic cancer. Vitamin D's immune-modulatory action suggests that it could help prevent type 1 diabetes. In type 2 diabetes, vitamin D may influence β-cell function, insulin sensitivity, and systematic inflammation-all characteristic pathways of that disease. Data from observational studies correlated vitamin D deficiency with risk of type 1 and type 2 diabetes. Prospective and ecological studies of pancreatic cancer incidence generally support a beneficial effect of higher 25-hydroxyvitamin D concentration as well as inverse correlations between UVB dose or exposure and incidence and/or mortality rate of pancreatic cancer. This review discusses the literature regarding vitamin D's role in risk of diabetes and pancreatic cancer. The results to date generally satisfy Hill's criteria for causality regarding vitamin D and incidence of these pancreatic diseases. However, large randomized, blinded, prospective studies are required to more fully evaluate the potential therapeutic role of vitamin D in preventing pancreatic diseases.
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Affiliation(s)
- Barbara Altieri
- a Institute of Medical Pathology, Division of Endocrinology and Metabolic Diseases, Catholic University of the Sacred Heart , Rome , Italy
| | - William B Grant
- b Sunlight , Nutrition, and Health Research Center , San Francisco , California , USA
| | - Silvia Della Casa
- a Institute of Medical Pathology, Division of Endocrinology and Metabolic Diseases, Catholic University of the Sacred Heart , Rome , Italy
| | - Francesco Orio
- c Endocrinology, Department of Sports Science and Wellness , Parthenope University , Naples , Italy.,d Fertility Techniques SSD , San Giovanni di Dio e Ruggi D'Aragona University Hospital , Salerno , Italy
| | - Alfredo Pontecorvi
- a Institute of Medical Pathology, Division of Endocrinology and Metabolic Diseases, Catholic University of the Sacred Heart , Rome , Italy
| | - Annamaria Colao
- e Department of Clinical Medicine and Surgery, Section of Endocrinology , University "Federico II," Naples , Italy
| | - Gerardo Sarno
- f Department of General Surgery and Transplantation Unit , San Giovanni di Dio e Ruggi D'Aragona University Hospital, Scuola Medica Salernitana , Salerno , Italy
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Effect of vitamin D supplementation on inflammation and nuclear factor kappa-B activity in overweight/obese adults: a randomized placebo-controlled trial. Sci Rep 2017; 7:15154. [PMID: 29123173 PMCID: PMC5680306 DOI: 10.1038/s41598-017-15264-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 10/23/2017] [Indexed: 01/08/2023] Open
Abstract
In-vitro studies suggest that vitamin D reduces inflammation by inhibiting nuclear factor kappa-B (NFκB) activity. Yet, no trials have examined the effects of vitamin D supplementation on NFκB activity in-vivo in humans. We conducted a double-blind randomized trial (RCT) examining effects of vitamin D supplementation on inflammatory markers and NFκB activity in peripheral blood mononuclear cells (PBMCs). Sixty-five overweight/obese, vitamin D-deficient (25-hydroxyvitamin D [25(OH)D] ≤ 50 nmol/L) adults were randomized to a single 100,000 IU bolus followed by 4,000 IU daily cholecalciferol or matching placebo for 16 weeks. We measured BMI, % body fat, serum 25(OH)D, high-sensitivity C-reactive protein (hsCRP), tumour necrosis factor (TNF), monocyte chemoattractant protein-1 (MCP-1), interferon-gamma (IFN-γ), several interleukins, and NFκB activity in PBMCs. Fifty-four participants completed the study. Serum 25(OH)D concentrations increased with vitamin D supplementation compared to placebo (p < 0.001). Vitamin D and placebo groups did not differ in any inflammatory markers or NFκB activity (all p > 0.05). Results remained non-significant after adjustment for age, sex, and % body fat, and after further adjustment for sun exposure, physical activity, and dietary vitamin D intake. Although in-vitro studies report anti-inflammatory effects of vitamin D, our RCT data show no effect of vitamin D supplementation on inflammatory markers or NFκB activity in-vivo in humans.
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Angellotti E, Pittas AG. The Role of Vitamin D in the Prevention of Type 2 Diabetes: To D or Not to D? Endocrinology 2017; 158:2013-2021. [PMID: 28486616 PMCID: PMC5505219 DOI: 10.1210/en.2017-00265] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 05/03/2017] [Indexed: 01/08/2023]
Abstract
Evidence on biological plausibility from mechanistic studies and highly consistent data from observational studies raise the possibility that optimizing vitamin D status may reduce the risk of type 2 diabetes. However, the observational nature of cohort studies precludes a definitive assessment of cause and effect because residual confounding or reverse causation cannot be excluded. Confounding is especially problematic with studies of vitamin D because blood 25-hydoxyvitamin D concentration is not only an excellent biomarker of vitamin D status, reflecting intake or biosynthesis, but also an excellent marker of good overall health. Results from underpowered trials and post hoc analyses of trials designed for nondiabetic outcomes do not support a role of vitamin D supplementation for prevention of type 2 diabetes among people with normal glucose tolerance. Whether vitamin D supplementation may have a role in the prevention of diabetes in high-risk populations remains to be seen. Adequately powered, randomized trials in well-defined populations (e.g., prediabetes) are ongoing and expected to establish whether vitamin D supplementation lowers risk of diabetes.
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Affiliation(s)
- Edith Angellotti
- Division of Endocrinology, Diabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts 02111
- Department of Medical, Surgical, Neurologic, Metabolic and Aging Sciences, University of Campania Luigi Vanvitelli, Naples 80128, Italy
| | - Anastassios G. Pittas
- Division of Endocrinology, Diabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts 02111
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Gois PHF, Ferreira D, Olenski S, Seguro AC. Vitamin D and Infectious Diseases: Simple Bystander or Contributing Factor? Nutrients 2017; 9:E651. [PMID: 28672783 PMCID: PMC5537771 DOI: 10.3390/nu9070651] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 06/19/2017] [Accepted: 06/22/2017] [Indexed: 02/07/2023] Open
Abstract
Vitamin D (VD) is a fat-soluble steroid essential for life in higher animals. It is technically a pro-hormone present in few food types and produced endogenously in the skin by a photochemical reaction. In recent decades, several studies have suggested that VD contributes to diverse processes extending far beyond mineral homeostasis. The machinery for VD production and its receptor have been reported in multiple tissues, where they have a pivotal role in modulating the immune system. Similarly, vitamin D deficiency (VDD) has been in the spotlight as a major global public healthcare burden. VDD is highly prevalent throughout different regions of the world, including tropical and subtropical countries. Moreover, VDD may affect host immunity leading to an increased incidence and severity of several infectious diseases. In this review, we discuss new insights on VD physiology as well as the relationship between VD status and various infectious diseases such as tuberculosis, respiratory tract infections, human immunodeficiency virus, fungal infections and sepsis. Finally, we critically review the latest evidence on VD monitoring and supplementation in the setting of infectious diseases.
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Affiliation(s)
- Pedro Henrique França Gois
- Laboratory of Medical Research-LIM12, Nephrology Department, University of São Paulo School of Medicine, São Paulo CEP 01246-903, Brazil.
- Nephrology Department, Royal Brisbane and Women's Hospital, Herston QLD 4029, Australia.
| | - Daniela Ferreira
- Laboratory of Medical Research-LIM12, Nephrology Department, University of São Paulo School of Medicine, São Paulo CEP 01246-903, Brazil.
| | - Simon Olenski
- Nephrology Department, Royal Brisbane and Women's Hospital, Herston QLD 4029, Australia.
| | - Antonio Carlos Seguro
- Laboratory of Medical Research-LIM12, Nephrology Department, University of São Paulo School of Medicine, São Paulo CEP 01246-903, Brazil.
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Merani S, Truong WW, Hancock W, Anderson CC, Shapiro AMJ. Chemokines and Their Receptors in Islet Allograft Rejection and as Targets for Tolerance Induction. Cell Transplant 2017; 15:295-309. [PMID: 28863747 DOI: 10.3727/000000006783981963] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Graft rejection is a major barrier to successful outcome of transplantation surgery. Islet transplantation introduces insulin secreting tissue into type 1 diabetes mellitus recipients, relieving patients from exogenous insulin injection. However, insulitis of grafted tissue and allograft rejection prevent long-term insulin independence. Leukocyte trafficking is necessary for the launch of successful immune responses to pathogen or allograft. Chemokines, small chemotactic cytokines, direct the migration of leukocytes through their interaction with chemokine receptors found on cell surfaces of immune cells. Unique receptor expression of leukocytes, and the specificity of chemokine secretion during various states of immune response, suggest that the extracellular chemokine milieu specifically homes certain leukocyte subsets. Thus, only those leukocytes required for the current immune task are attracted to the inflammatory site. Chemokine blockade, using antagonists and monoclonal antibodies directed against chemokine receptors, is an emerging and specific immunosuppressive strategy. Importantly, chemokine blockade may potentiate tolerance induction regimens to be used following transplantation surgery, and prevent the need for life-long immunosuppression of islet transplant recipients. Here, the role for chemokine blockade in islet transplant rejection and tolerance is reviewed.
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Affiliation(s)
- Shaheed Merani
- Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Edmonton AB, Canada
| | - Wayne W Truong
- Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Edmonton AB, Canada
| | - Wayne Hancock
- Department of Pathology and Laboratory Medicine, Joseph Stokes, Jr. Research Institute and Biesecker Pediatric Liver Center, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA, USA
| | - Colin C Anderson
- Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Edmonton AB, Canada
| | - A M James Shapiro
- Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Edmonton AB, Canada
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Effect of paricalcitol on pancreatic oxidative stress, inflammatory markers, and glycemic status in diabetic rats. Ir J Med Sci 2017; 187:75-84. [PMID: 28551720 DOI: 10.1007/s11845-017-1635-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 05/18/2017] [Indexed: 01/09/2023]
Abstract
OBJECTIVES This study is designed to explore the effect of paricalcitol (vitamin D receptor agonist) on pancreatic oxidative stress, inflammatory markers, and adiponectin and glycemic status in diabetic rats. MATERIALS AND METHODS Forty Sprague-Dawley male rats aged 10-12 weeks (150-250 g) were used in this study. Type 2 diabetes was developed by providing 4 weeks of high-fat-diet feeding before one shot of streptozotocin injection (40 mg/kg i.p.). Four study groups were designed as normal control rats, diabetic control vehicle-treated, diabetic paricalcitol-treated (0.8 μg/kg), and diabetic glibenclamide-treated (0.6 mg/kg) groups with 10 animals in each. After treatment of diabetic rats for 3 months, pancreatic inflammatory and oxidative stress markers, plasma adiponectin, glycemic status parameters, and histopathological pancreatic islet changes were evaluated. RESULTS Paricalcitol and glibenclamide treatment significantly (P < 0.05) decreased plasma glucose, insulin resistance, and pancreatic malondialdehyde and tumor necrosis factor-α levels. Moreover, they significantly (P < 0.05) increased plasma fasting insulin, C-peptide, adiponectin, pancreatic IL-2, catalase, superoxide dismutase, glutathione peroxidase, and reduced glutathione when contrasted with diabetic control rats. Furthermore, they prevented extensive histopathological damage in the pancreas of diabetic rats. CONCLUSIONS Paricalcitol reduced pancreatic oxidative stress and inflammatory markers, and improved glycemic status in diabetic rats.
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30
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Miller KM, Hart PH, de Klerk NH, Davis EA, Lucas RM. Are low sun exposure and/or vitamin D risk factors for type 1 diabetes? Photochem Photobiol Sci 2017; 16:381-398. [DOI: 10.1039/c6pp00294c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Ultraviolet radiation and vitamin D, with their known immunosuppressive effects, have the potential to delay or inhibit type 1 diabetes.
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Affiliation(s)
| | | | | | | | - R. M. Lucas
- National Centre for Epidemiology and Population Health
- The Australian National University
- Canberra 2600
- Australia
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31
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Delitto D, Wallet SM, Hughes SJ. Targeting tumor tolerance: A new hope for pancreatic cancer therapy? Pharmacol Ther 2016; 166:9-29. [PMID: 27343757 DOI: 10.1016/j.pharmthera.2016.06.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Accepted: 06/09/2016] [Indexed: 01/18/2023]
Abstract
With a 5-year survival rate of just 8%, pancreatic cancer (PC) is projected to be the second leading cause of cancer deaths by 2030. Most PC patients are not eligible for surgery with curative intent upon diagnosis, emphasizing a need for more effective therapies. However, PC is notoriously resistant to chemoradiation regimens. As an alternative, immune modulating strategies have recently achieved success in melanoma, prompting their application to other solid tumors. For such therapeutic approaches to succeed, a state of immunologic tolerance must be reversed in the tumor microenvironment and that has been especially challenging in PC. Nonetheless, knowledge of the PC immune microenvironment has advanced considerably over the past decade, yielding new insights and perspectives to guide multimodal therapies. In this review, we catalog the historical groundwork and discuss the evolution of the cancer immunology field to its present state with a specific focus on PC. Strategies currently employing immune modulation in PC are reviewed, specifically highlighting 66 clinical trials across the United States and Europe.
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Affiliation(s)
- Daniel Delitto
- Department of Surgery, University of Florida, Gainesville, FL, USA
| | - Shannon M Wallet
- Department of Oral Biology, University of Florida, Gainesville, FL, USA
| | - Steven J Hughes
- Department of Surgery, University of Florida, Gainesville, FL, USA.
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Nunnari G, Fagone P, Lazzara F, Longo A, Cambria D, Di Stefano G, Palumbo M, Malaguarnera L, Di Rosa M. Vitamin D3 inhibits TNFα-induced latent HIV reactivation in J-LAT cells. Mol Cell Biochem 2016; 418:49-57. [PMID: 27295094 DOI: 10.1007/s11010-016-2732-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 06/08/2016] [Indexed: 12/12/2022]
Abstract
1,25-Dihydroxyvitamin D3 (1,25(OH)2D3) is known to suppress NF-kB activity by interfering with its pathways. The aim of this study was to investigate the ability of 1,25(OH)2D3 in reducing the reactivation of the HIV virus J-LAT cells, an established model of latently infected cells, which were treated with TNFalpha (100 ng/ml) for 2 h with or without 24 h 1,25(OH)2D3 (100 nM) pretreatment. Reactivation of HIV RNA in J-LAT was evaluated in terms of green fluorescent protein (GFP) expression. The same experimental setting was repeated on T cells from HIV-infected patients. Treatment with TNFalpha was associated with a 16 % increase in GFP+ cells and a five-fold increase in unspliced HIV RNA expression (p < 0.04). Pretreatment of J-LAT cells with 1,25(OH)2D3 for 24 h followed by TNFalpha (100 ng/ml) for 2 h reduced the percentage of GFP+ cells by 8 %; moreover, a 2.4-fold decrease in unspliced HIV RNA expression was observed (p < 0.002). In T cells from patients, treatment with TNFalpha significantly increased unspliced HIV RNA expression (sixfold increase, p < 0.02), whereas prestimulation with 1,25(OH)2D3 reduced its expression (2.5-fold decrease, p < 0.02) compared to controls.1,25(OH)2D3 is able to reduce the ability of TNFalpha to upregulate the transcription of HIV RNA from latently infected cells. These data provide further understanding of the pathogenic mechanisms regulating viral reactivation from latent reservoirs, along with new insight in viral internalization.
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Affiliation(s)
- G Nunnari
- Unit of Infectious Diseases, Department of Clinical and Molecular Biomedicine, University of Catania, Catania, Italy
| | - P Fagone
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - F Lazzara
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - A Longo
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - D Cambria
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - G Di Stefano
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - M Palumbo
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - L Malaguarnera
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Michelino Di Rosa
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy.
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34
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Vitamin D deficiency and the associated factors in children with type 1 diabetes mellitus in southern Iran. Int J Diabetes Dev Ctries 2016. [DOI: 10.1007/s13410-016-0499-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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Abstract
PTH and Vitamin D are two major regulators of mineral metabolism. They play critical roles in the maintenance of calcium and phosphate homeostasis as well as the development and maintenance of bone health. PTH and Vitamin D form a tightly controlled feedback cycle, PTH being a major stimulator of vitamin D synthesis in the kidney while vitamin D exerts negative feedback on PTH secretion. The major function of PTH and major physiologic regulator is circulating ionized calcium. The effects of PTH on gut, kidney, and bone serve to maintain serum calcium within a tight range. PTH has a reciprocal effect on phosphate metabolism. In contrast, vitamin D has a stimulatory effect on both calcium and phosphate homeostasis, playing a key role in providing adequate mineral for normal bone formation. Both hormones act in concert with the more recently discovered FGF23 and klotho, hormones involved predominantly in phosphate metabolism, which also participate in this closely knit feedback circuit. Of great interest are recent studies demonstrating effects of both PTH and vitamin D on the cardiovascular system. Hyperparathyroidism and vitamin D deficiency have been implicated in a variety of cardiovascular disorders including hypertension, atherosclerosis, vascular calcification, and kidney failure. Both hormones have direct effects on the endothelium, heart, and other vascular structures. How these effects of PTH and vitamin D interface with the regulation of bone formation are the subject of intense investigation.
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Affiliation(s)
- Syed Jalal Khundmiri
- Department of Medicine, University of Louisville, Louisville, Kentucky, USA
- Department of Physiology and Biophysics, University of Louisville, Louisville, Kentucky, USA
| | - Rebecca D. Murray
- Department of Medicine, University of Louisville, Louisville, Kentucky, USA
- Department of Physiology and Biophysics, University of Louisville, Louisville, Kentucky, USA
| | - Eleanor Lederer
- Department of Medicine, University of Louisville, Louisville, Kentucky, USA
- Department of Physiology and Biophysics, University of Louisville, Louisville, Kentucky, USA
- Robley Rex VA Medical Center, University of Louisville, Louisville, Kentucky, USA
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Wang Y, Wang O, Li W, Ma L, Ping F, Chen L, Nie M. Variants in Vitamin D Binding Protein Gene Are Associated With Gestational Diabetes Mellitus. Medicine (Baltimore) 2015; 94:e1693. [PMID: 26448018 PMCID: PMC4616752 DOI: 10.1097/md.0000000000001693] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
To investigate whether single nucleotide polymorphisms (SNPs) within 4 representative genes (VDR, GC, CYP2R1, and CYP24A1) encoding the core proteins involved in vitamin D production, degradation, and ligand-dependent signaling pathway are associated with gestational diabetes mellitus (GDM) in a Chinese population. A total of 1494 pregnant Han Chinese women (692 women with GDM and 802 women with normal glucose served as controls) were recruited through a 2-step approach. Participants were further divided into 2 groups according to body mass index before gestation (pre-BMI) (25 kg/m2). Nine SNPs (rs3733359, rs2282679, and rs16847024 in GC, rs2060793 and rs10741657 in CYP2R1, rs2248359 and rs6013897 in CYP24A1, rs11574143 and rs739837 in VDR) were genotyped using TaqMan allelic discrimination assays. The relationships between genotypes/alleles of a single locus as well as haplotypes of each gene and GDM were analyzed. We did not observe a significant difference in genotype frequency of each SNP between cases and controls. However, in the obese subgroup (pre-BMI ≥ 25 kg/m2), the risk allele-A of rs3733359 showed an association with increased risk of GDM (OR = 1.739, 95% CI = 1.066-2.837, P = 0.027). The GG-haplotype frequency of rs3733359 and rs2282679 in GC was modestly lower in the GDM group (OR = 0.848, 95% CI = 0.719-0.999, P = 0.048). Rs2060793 and rs10741657 were associated with insulin area under the curve (P = 0.028, P = 0.042, respectively), while rs739837 and rs6013897 demonstrated a correlation with fasting glucose (P = 0.019, P = 0.049, respectively). Additionally, rs2248359 displayed an association with leukocyte counts (B = 0.063 P = 0.033) and rs16847024 was related to high-sensitivity C-reactive protein levels (B = 0.086, P = 0.005). Our results indicate an association between GC variants and GDM, as well as a relation between a subset of loci in CYP2R1, CYP24A1, and VDR and clinical parameters related to GDM. Our findings may provide information for identifying biomarkers for early risk prediction of GDM and the pathways involved in disease progression.
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Affiliation(s)
- Ying Wang
- From the Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China (YW, OW, WL, FP, MN); Key Laboratory of Endocrinology, Ministry of Health, Beijing, China (YW, OW, WL, FP, MN); People's Hospital of Longkou City, Shan Dong, China (YW); Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing China (LM); and Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China (LC)
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Vitamin D inhibits lipopolysaccharide-induced inflammatory response potentially through the Toll-like receptor 4 signalling pathway in the intestine and enterocytes of juvenile Jian carp (Cyprinus carpio var. Jian). Br J Nutr 2015; 114:1560-8. [DOI: 10.1017/s0007114515003256] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
AbstractThe present study was conducted to investigate the anti-inflammatory effect of vitamin D both in juvenile Jian carp (Cyprinus carpio var. Jian) in vivo and in enterocytes in vitro. In primary enterocytes, exposure to 10 mg lipopolysaccharide (LPS)/l increased lactate dehydrogenase activity in the culture medium (P<0·05) and resulted in a significant loss of cell viability (P<0·05). LPS exposure increased (P<0·05) the mRNA expression of pro-inflammatory cytokines (TNF-α, IL-1β, IL-6 and IL-8), which was decreased by pre-treatment with 1,25-dihydroxyvitamin D (1,25D3) in a dose-dependent manner (P<0·05). Further results showed that pre-treatment with 1,25D3 down-regulated Toll-like receptor 4 (TLR4), myeloid differentiation primary response gene 88 (Myd88) and NF-κB p65 mRNA expression (P<0·05), suggesting potential mechanisms against LPS-induced inflammatory response. In vivo, intraperitoneal injection of LPS significantly increased TNF-α, IL-1β, IL-6 and IL-8 mRNA expression in the intestine of carp (P<0·05). Pre-treatment of fish with vitamin D3 protected the fish intestine from the LPS-induced increase of TNF-α, IL-1β, IL-6 and IL-8 mainly by downregulating TLR4, Myd88 and NF-κB p65 mRNA expression (P<0·05). These observations suggest that vitamin D could inhibit LPS-induced inflammatory response in juvenile Jian carp in vivo and in enterocytes in vitro. The anti-inflammatory effect of vitamin D is mediated at least in part by TLR4-Myd88 signalling pathways in the intestine and enterocytes of juvenile Jian carp.
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McCall KD, Thuma JR, Courreges MC, Benencia F, James CBL, Malgor R, Kantake N, Mudd W, Denlinger N, Nolan B, Wen L, Schwartz FL. Toll-like receptor 3 is critical for coxsackievirus B4-induced type 1 diabetes in female NOD mice. Endocrinology 2015; 156:453-61. [PMID: 25422874 PMCID: PMC4298321 DOI: 10.1210/en.2013-2006] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Group B coxsackieviruses (CVBs) are involved in triggering some cases of type 1 diabetes mellitus (T1DM). However, the molecular mechanism(s) responsible for this remain elusive. Toll-like receptor 3 (TLR3), a receptor that recognizes viral double-stranded RNA, is hypothesized to play a role in virus-induced T1DM, although this hypothesis is yet to be substantiated. The objective of this study was to directly investigate the role of TLR3 in CVB-triggered T1DM in nonobese diabetic (NOD) mice, a mouse model of human T1DM that is widely used to study both spontaneous autoimmune and viral-induced T1DM. As such, we infected female wild-type (TLR3(+/+)) and TLR3 knockout (TLR3(-/-)) NOD mice with CVB4 and compared the incidence of diabetes in CVB4-infected mice with that of uninfected counterparts. We also evaluated the islets of uninfected and CVB4-infected wild-type and TLR3 knockout NOD mice by immunohistochemistry and insulitis scoring. TLR3 knockout mice were markedly protected from CVB4-induced diabetes compared with CVB4-infected wild-type mice. CVB4-induced T-lymphocyte-mediated insulitis was also significantly less severe in TLR3 knockout mice compared with wild-type mice. No differences in insulitis were observed between uninfected animals, either wild-type or TLR3 knockout mice. These data demonstrate for the first time that TLR3 is 1) critical for CVB4-induced T1DM, and 2) modulates CVB4-induced insulitis in genetically prone NOD mice.
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Affiliation(s)
- Kelly D McCall
- Departments of Specialty Medicine (K.D.M., M.C.C., W.M., N.D., B.N., F.L.S.) and Biomedical Sciences (K.D.M., F.B., C.B.L.J., R.M., N.K.) and Diabetes Institute (K.D.M., J.R.T., M.C.C., R.M., W.M., N.D., B.N., F.L.S.), Ohio University Heritage College of Osteopathic Medicine, Athens, Ohio 45701; Department of Biological Sciences (K.D.M.) and Molecular and Cellular Biology Program (K.D.M., F.B., C.B.L.J., R.M.), Ohio University College of Arts and Sciences, Athens, Ohio 45701; Biomedical Engineering Program (K.D.M., F.B., R.M., F.L.S.), Ohio University Russ College of Engineering and Technology, Athens, Ohio 45701; and Section of Endocrinology (L.W.), Department of Internal Medicine, The Anlyan Center for Medical Research and Education, Yale University School of Medicine, New Haven, Connecticut 06520
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Adamczak DM, Nowak JK, Frydrychowicz M, Kaczmarek M, Sikora J. The role of Toll-like receptors and vitamin D in diabetes mellitus type 1--a review. Scand J Immunol 2014; 80:75-84. [PMID: 24845558 DOI: 10.1111/sji.12188] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 05/04/2014] [Indexed: 12/17/2022]
Abstract
It is widely accepted that type 1 diabetes mellitus (T1DM) is an autoimmune disease resulting from an interaction between immunologic, genetic and environmental factors. However, the exact mechanism leading to the development of T1DM remains incomplete. There is a large body of evidence pointing towards the important role of toll-like receptor (TLR) activation and vitamin D deficiency in T1DM pathogenesis. In this article, we review the available data on the influence of TLRs' level of activation and vitamin D status on the risk of the development of T1DM in humans and rodent models. We also summarize the current information regarding the interactions between TLRs' level of activation, vitamin D status and various environmental factors, such as enteroviral infections, the gut microbiota and breastfeeding substitution, among others. Our results stipulate that vitamin D seems to protect against T1DM by reducing the TLRs' level of activation.
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Affiliation(s)
- D M Adamczak
- Poznan University of Medical Sciences, Clinical Hospital No. 1, Poznan, Poland; Department of Clinical Immunology, Poznan University of Medical Sciences, Poznan, Poland
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Muscogiuri G, Mitri J, Mathieu C, Badenhoop K, Tamer G, Orio F, Mezza T, Vieth R, Colao A, Pittas A. Mechanisms in endocrinology: vitamin D as a potential contributor in endocrine health and disease. Eur J Endocrinol 2014; 171:R101-10. [PMID: 24872497 DOI: 10.1530/eje-14-0158] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVE It has been suggested that vitamin D may play a role in the pathogenesis of several endocrine diseases, such as hyperparathyroidism, type 1 diabetes (T1DM), type 2 diabetes (T2DM), autoimmune thyroid diseases, Addison's disease and polycystic ovary syndrome (PCOS). In this review, we debate the role of vitamin D in the pathogenesis of endocrine diseases. METHODS Narrative overview of the literature synthesizing the current evidence retrieved from searches of computerized databases, hand searches and authoritative texts. RESULTS Evidence from basic science supports a role for vitamin D in many endocrine conditions. In humans, inverse relationships have been reported not only between blood 25-hydroxyvitamin D and parathyroid hormone concentrations but also with risk of T1DM, T2DM, and PCOS. There is less evidence for an association with Addison's disease or autoimmune thyroid disease. Vitamin D supplementation may have a role for prevention of T2DM, but the available evidence is not consistent. CONCLUSIONS Although observational studies support a potential role of vitamin D in endocrine disease, high quality evidence from clinical trials does not exist to establish a place for vitamin D supplementation in optimizing endocrine health. Ongoing randomized controlled trials are expected to provide insights into the efficacy and safety of vitamin D in the management of endocrine disease.
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Affiliation(s)
- Giovanna Muscogiuri
- Department of Clinical Medicine and SurgeryUniversity 'Federico II' Naples, Via Sergio Pansini, 5-80131 Napoli, ItalyDivision of EndocrinologyDiabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts, USADepartment of EndocrinologyUZ Gasthuisberg, 3000 Leuven, BelgiumDivision Endocrinology and DiabetologyDepartment of Medicine 1, University Hospital of the Goethe-University Frankfurt, Frankfurt am Main, GermanyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Goztepe Training and Research Hospital, Medeniyet University, Istanbul, TurkeyEndocrinologyUniversity 'Parthenope' Naples, Naples, ItalyEndocrinology of Fertile AgeUniversity Hospital 'S. Giovanni di Dio e Ruggi d'Aragona' Salerno, ItalyEndocrinology and Metabolic DiseasesUniversità Cattolica del Sacro Cuore, Rome, ItalyDepartments of Nutritional SciencesLaboratory Medicine and PathobiologyUniversity of Toronto, Toronto, Ontario, Canada
| | - Joanna Mitri
- Department of Clinical Medicine and SurgeryUniversity 'Federico II' Naples, Via Sergio Pansini, 5-80131 Napoli, ItalyDivision of EndocrinologyDiabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts, USADepartment of EndocrinologyUZ Gasthuisberg, 3000 Leuven, BelgiumDivision Endocrinology and DiabetologyDepartment of Medicine 1, University Hospital of the Goethe-University Frankfurt, Frankfurt am Main, GermanyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Goztepe Training and Research Hospital, Medeniyet University, Istanbul, TurkeyEndocrinologyUniversity 'Parthenope' Naples, Naples, ItalyEndocrinology of Fertile AgeUniversity Hospital 'S. Giovanni di Dio e Ruggi d'Aragona' Salerno, ItalyEndocrinology and Metabolic DiseasesUniversità Cattolica del Sacro Cuore, Rome, ItalyDepartments of Nutritional SciencesLaboratory Medicine and PathobiologyUniversity of Toronto, Toronto, Ontario, Canada
| | - Chantal Mathieu
- Department of Clinical Medicine and SurgeryUniversity 'Federico II' Naples, Via Sergio Pansini, 5-80131 Napoli, ItalyDivision of EndocrinologyDiabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts, USADepartment of EndocrinologyUZ Gasthuisberg, 3000 Leuven, BelgiumDivision Endocrinology and DiabetologyDepartment of Medicine 1, University Hospital of the Goethe-University Frankfurt, Frankfurt am Main, GermanyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Goztepe Training and Research Hospital, Medeniyet University, Istanbul, TurkeyEndocrinologyUniversity 'Parthenope' Naples, Naples, ItalyEndocrinology of Fertile AgeUniversity Hospital 'S. Giovanni di Dio e Ruggi d'Aragona' Salerno, ItalyEndocrinology and Metabolic DiseasesUniversità Cattolica del Sacro Cuore, Rome, ItalyDepartments of Nutritional SciencesLaboratory Medicine and PathobiologyUniversity of Toronto, Toronto, Ontario, Canada
| | - Klaus Badenhoop
- Department of Clinical Medicine and SurgeryUniversity 'Federico II' Naples, Via Sergio Pansini, 5-80131 Napoli, ItalyDivision of EndocrinologyDiabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts, USADepartment of EndocrinologyUZ Gasthuisberg, 3000 Leuven, BelgiumDivision Endocrinology and DiabetologyDepartment of Medicine 1, University Hospital of the Goethe-University Frankfurt, Frankfurt am Main, GermanyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Goztepe Training and Research Hospital, Medeniyet University, Istanbul, TurkeyEndocrinologyUniversity 'Parthenope' Naples, Naples, ItalyEndocrinology of Fertile AgeUniversity Hospital 'S. Giovanni di Dio e Ruggi d'Aragona' Salerno, ItalyEndocrinology and Metabolic DiseasesUniversità Cattolica del Sacro Cuore, Rome, ItalyDepartments of Nutritional SciencesLaboratory Medicine and PathobiologyUniversity of Toronto, Toronto, Ontario, Canada
| | - Gonca Tamer
- Department of Clinical Medicine and SurgeryUniversity 'Federico II' Naples, Via Sergio Pansini, 5-80131 Napoli, ItalyDivision of EndocrinologyDiabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts, USADepartment of EndocrinologyUZ Gasthuisberg, 3000 Leuven, BelgiumDivision Endocrinology and DiabetologyDepartment of Medicine 1, University Hospital of the Goethe-University Frankfurt, Frankfurt am Main, GermanyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Goztepe Training and Research Hospital, Medeniyet University, Istanbul, TurkeyEndocrinologyUniversity 'Parthenope' Naples, Naples, ItalyEndocrinology of Fertile AgeUniversity Hospital 'S. Giovanni di Dio e Ruggi d'Aragona' Salerno, ItalyEndocrinology and Metabolic DiseasesUniversità Cattolica del Sacro Cuore, Rome, ItalyDepartments of Nutritional SciencesLaboratory Medicine and PathobiologyUniversity of Toronto, Toronto, Ontario, Canada
| | - Francesco Orio
- Department of Clinical Medicine and SurgeryUniversity 'Federico II' Naples, Via Sergio Pansini, 5-80131 Napoli, ItalyDivision of EndocrinologyDiabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts, USADepartment of EndocrinologyUZ Gasthuisberg, 3000 Leuven, BelgiumDivision Endocrinology and DiabetologyDepartment of Medicine 1, University Hospital of the Goethe-University Frankfurt, Frankfurt am Main, GermanyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Goztepe Training and Research Hospital, Medeniyet University, Istanbul, TurkeyEndocrinologyUniversity 'Parthenope' Naples, Naples, ItalyEndocrinology of Fertile AgeUniversity Hospital 'S. Giovanni di Dio e Ruggi d'Aragona' Salerno, ItalyEndocrinology and Metabolic DiseasesUniversità Cattolica del Sacro Cuore, Rome, ItalyDepartments of Nutritional SciencesLaboratory Medicine and PathobiologyUniversity of Toronto, Toronto, Ontario, CanadaDepartment of Clinical Medicine and SurgeryUniversity 'Federico II' Naples, Via Sergio Pansini, 5-80131 Napoli, ItalyDivision of EndocrinologyDiabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts, USADepartment of EndocrinologyUZ Gasthuisberg, 3000 Leuven, BelgiumDivision Endocrinology and DiabetologyDepartment of Medicine 1, University Hospital of the Goethe-University Frankfurt, Frankfurt am Main, GermanyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Goztepe Training and Research Hospital, Medeniyet University, Istanbul, TurkeyEndocrinologyUniversity 'Parthenope' Naples, Naples, ItalyEndocrinology of Fertile AgeUniversity Hospital 'S. Giovanni di Dio e Ruggi d'Aragona' Salerno, ItalyEndocrinology and Metabolic DiseasesUniversità Cattolica del Sacro Cuore, Rome, ItalyDepartments of Nutritional SciencesLaboratory Medicine and PathobiologyUniversity of Toronto, Toronto, Ontario, Canada
| | - Teresa Mezza
- Department of Clinical Medicine and SurgeryUniversity 'Federico II' Naples, Via Sergio Pansini, 5-80131 Napoli, ItalyDivision of EndocrinologyDiabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts, USADepartment of EndocrinologyUZ Gasthuisberg, 3000 Leuven, BelgiumDivision Endocrinology and DiabetologyDepartment of Medicine 1, University Hospital of the Goethe-University Frankfurt, Frankfurt am Main, GermanyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Goztepe Training and Research Hospital, Medeniyet University, Istanbul, TurkeyEndocrinologyUniversity 'Parthenope' Naples, Naples, ItalyEndocrinology of Fertile AgeUniversity Hospital 'S. Giovanni di Dio e Ruggi d'Aragona' Salerno, ItalyEndocrinology and Metabolic DiseasesUniversità Cattolica del Sacro Cuore, Rome, ItalyDepartments of Nutritional SciencesLaboratory Medicine and PathobiologyUniversity of Toronto, Toronto, Ontario, Canada
| | - Reinhold Vieth
- Department of Clinical Medicine and SurgeryUniversity 'Federico II' Naples, Via Sergio Pansini, 5-80131 Napoli, ItalyDivision of EndocrinologyDiabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts, USADepartment of EndocrinologyUZ Gasthuisberg, 3000 Leuven, BelgiumDivision Endocrinology and DiabetologyDepartment of Medicine 1, University Hospital of the Goethe-University Frankfurt, Frankfurt am Main, GermanyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Goztepe Training and Research Hospital, Medeniyet University, Istanbul, TurkeyEndocrinologyUniversity 'Parthenope' Naples, Naples, ItalyEndocrinology of Fertile AgeUniversity Hospital 'S. Giovanni di Dio e Ruggi d'Aragona' Salerno, ItalyEndocrinology and Metabolic DiseasesUniversità Cattolica del Sacro Cuore, Rome, ItalyDepartments of Nutritional SciencesLaboratory Medicine and PathobiologyUniversity of Toronto, Toronto, Ontario, CanadaDepartment of Clinical Medicine and SurgeryUniversity 'Federico II' Naples, Via Sergio Pansini, 5-80131 Napoli, ItalyDivision of EndocrinologyDiabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts, USADepartment of EndocrinologyUZ Gasthuisberg, 3000 Leuven, BelgiumDivision Endocrinology and DiabetologyDepartment of Medicine 1, University Hospital of the Goethe-University Frankfurt, Frankfurt am Main, GermanyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Goztepe Training and Research Hospital, Medeniyet University, Istanbul, TurkeyEndocrinologyUniversity 'Parthenope' Naples, Naples, ItalyEndocrinology of Fertile AgeUniversity Hospital 'S. Giovanni di Dio e Ruggi d'Aragona' Salerno, ItalyEndocrinology and Metabolic DiseasesUniversità Cattolica del Sacro Cuore, Rome, ItalyDepartments of Nutritional SciencesLaboratory Medicine and PathobiologyUniversity of Toronto, Toronto, Ontario, Canada
| | - Annamaria Colao
- Department of Clinical Medicine and SurgeryUniversity 'Federico II' Naples, Via Sergio Pansini, 5-80131 Napoli, ItalyDivision of EndocrinologyDiabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts, USADepartment of EndocrinologyUZ Gasthuisberg, 3000 Leuven, BelgiumDivision Endocrinology and DiabetologyDepartment of Medicine 1, University Hospital of the Goethe-University Frankfurt, Frankfurt am Main, GermanyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Goztepe Training and Research Hospital, Medeniyet University, Istanbul, TurkeyEndocrinologyUniversity 'Parthenope' Naples, Naples, ItalyEndocrinology of Fertile AgeUniversity Hospital 'S. Giovanni di Dio e Ruggi d'Aragona' Salerno, ItalyEndocrinology and Metabolic DiseasesUniversità Cattolica del Sacro Cuore, Rome, ItalyDepartments of Nutritional SciencesLaboratory Medicine and PathobiologyUniversity of Toronto, Toronto, Ontario, Canada
| | - Anastassios Pittas
- Department of Clinical Medicine and SurgeryUniversity 'Federico II' Naples, Via Sergio Pansini, 5-80131 Napoli, ItalyDivision of EndocrinologyDiabetes and Metabolism, Tufts Medical Center, Boston, Massachusetts, USADepartment of EndocrinologyUZ Gasthuisberg, 3000 Leuven, BelgiumDivision Endocrinology and DiabetologyDepartment of Medicine 1, University Hospital of the Goethe-University Frankfurt, Frankfurt am Main, GermanyDivision of Endocrinology and MetabolismDepartment of Internal Medicine, Goztepe Training and Research Hospital, Medeniyet University, Istanbul, TurkeyEndocrinologyUniversity 'Parthenope' Naples, Naples, ItalyEndocrinology of Fertile AgeUniversity Hospital 'S. Giovanni di Dio e Ruggi d'Aragona' Salerno, ItalyEndocrinology and Metabolic DiseasesUniversità Cattolica del Sacro Cuore, Rome, ItalyDepartments of Nutritional SciencesLaboratory Medicine and PathobiologyUniversity of Toronto, Toronto, Ontario, Canada
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Chandel N, Ayasolla K, Lan X, Rai P, Mikulak J, Husain M, Malhotra A, McGowan J, Singhal PC. Renin modulates HIV replication in T cells. J Leukoc Biol 2014; 96:601-9. [PMID: 24970860 DOI: 10.1189/jlb.2a0414-192r] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
HIV is known to subvert cellular machinery to enhance its replication. Recently, HIV has been reported to enhance TC renin expression. We hypothesized that HIV induces and maintains high renin expression to promote its own replication in TCs. Renin enhanced HIV replication in TCs in a dose-dependent manner. (P)RR-deficient TCs, as well as those lacking renin, displayed attenuated NF-κB activity and HIV replication. TCs treated with renin and Hpr displayed activation of the (P)RR-PLZF protein signaling cascade. Renin, HIV, and Hpr activated the PI3K pathway. Both renin and Hpr cleaved Agt (a renin substrate) to Ang I and also cleaved Gag polyproteins (protease substrate) to p24. Furthermore, aliskiren, a renin inhibitor, reduced renin- and Hpr-induced cleavage of Agt and Gag polyproteins. These findings indicate that renin contributes to HIV replication in TCs via the (P)RR-PLZF signaling cascade and through cleavage of the Gag polyproteins.
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Affiliation(s)
- Nirupama Chandel
- Center of Immunology and Inflammation, Feinstein Institute for Medical Research, North Shore LIJ Hofstra Medical School, Manhasset, New York, USA; and
| | - Kamesh Ayasolla
- Center of Immunology and Inflammation, Feinstein Institute for Medical Research, North Shore LIJ Hofstra Medical School, Manhasset, New York, USA; and
| | - Xiqian Lan
- Center of Immunology and Inflammation, Feinstein Institute for Medical Research, North Shore LIJ Hofstra Medical School, Manhasset, New York, USA; and
| | - Partab Rai
- Center of Immunology and Inflammation, Feinstein Institute for Medical Research, North Shore LIJ Hofstra Medical School, Manhasset, New York, USA; and
| | - Joanna Mikulak
- Unit of Clinical and Experimental Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Mohammad Husain
- Center of Immunology and Inflammation, Feinstein Institute for Medical Research, North Shore LIJ Hofstra Medical School, Manhasset, New York, USA; and
| | - Ashwani Malhotra
- Center of Immunology and Inflammation, Feinstein Institute for Medical Research, North Shore LIJ Hofstra Medical School, Manhasset, New York, USA; and
| | - Joseph McGowan
- Center of Immunology and Inflammation, Feinstein Institute for Medical Research, North Shore LIJ Hofstra Medical School, Manhasset, New York, USA; and
| | - Pravin C Singhal
- Center of Immunology and Inflammation, Feinstein Institute for Medical Research, North Shore LIJ Hofstra Medical School, Manhasset, New York, USA; and
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Borst O, Münzer P, Schmid E, Schmidt E, Russo A, Walker B, Yang W, Leibrock C, Szteyn K, Schmidt S, Elvers M, Faggio C, Shumilina E, Kuro‐o M, Gawaz M, Lang F. 1,25(OH)
2
vitamin D
3
‐dependent inhibition of platelet Ca
2+
signaling and thrombus formation in klotho‐deficient mice. FASEB J 2014; 28:2108-2119. [DOI: 10.1096/fj.13-239277] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Affiliation(s)
- Oliver Borst
- Department of Cardiology and Cardiovascular MedicineUniversity of TübingenTübingenGermany
- Department of PhysiologyUniversity of TübingenTübingenGermany
| | - Patrick Münzer
- Department of PhysiologyUniversity of TübingenTübingenGermany
| | - Evi Schmid
- Department of PhysiologyUniversity of TübingenTübingenGermany
| | - Eva‐Maria Schmidt
- Department of PhysiologyUniversity of TübingenTübingenGermany
- Department of Behavioral NeurobiologyUniversity of TübingenTübingenGermany
| | - Antonella Russo
- Department of PhysiologyUniversity of TübingenTübingenGermany
- Department of Biological and Environmental SciencesUniversity of MessinaSant'Agata‐MessinaItaly
| | - Britta Walker
- Department of PhysiologyUniversity of TübingenTübingenGermany
| | - Wenting Yang
- Department of PhysiologyUniversity of TübingenTübingenGermany
| | | | - Kalina Szteyn
- Department of PhysiologyUniversity of TübingenTübingenGermany
| | | | - Margitta Elvers
- Department of Cardiology and Cardiovascular MedicineUniversity of TübingenTübingenGermany
- Department of Clinical and Experimental HemostasisUniversity of DüsseldorfDüsseldorfGermany
| | - Caterina Faggio
- Department of Behavioral NeurobiologyUniversity of TübingenTübingenGermany
| | | | - Makoto Kuro‐o
- Department of PathologyUniversity of TexasDallasTexasUSA
| | - Meinrad Gawaz
- Department of Cardiology and Cardiovascular MedicineUniversity of TübingenTübingenGermany
| | - Florian Lang
- Department of PhysiologyUniversity of TübingenTübingenGermany
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Wolden-Kirk H, Rondas D, Bugliani M, Korf H, Van Lommel L, Brusgaard K, Christesen HT, Schuit F, Proost P, Masini M, Marchetti P, Eizirik DL, Overbergh L, Mathieu C. Discovery of molecular pathways mediating 1,25-dihydroxyvitamin D3 protection against cytokine-induced inflammation and damage of human and male mouse islets of Langerhans. Endocrinology 2014; 155:736-47. [PMID: 24424042 DOI: 10.1210/en.2013-1409] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Protection against insulitis and diabetes by active vitamin D, 1,25-dihydroxyvitamin D3 (1,25(OH)2D3), in nonobese diabetic mice has until now mainly been attributed to its immunomodulatory effects, but also protective effects of this hormone on inflammation-induced β-cell death have been reported. The aim of this study was to clarify the molecular mechanisms by which 1,25(OH)2D3 contributes to β-cell protection against cytokine-induced β-cell dysfunction and death. Human and mouse islets were exposed to IL-1β and interferon-γ in the presence or absence of 1,25(OH)2D3. Effects on insulin secretion and β-cell survival were analyzed by glucose-stimulated insulin release and electron microscopy or Hoechst/propidium iodide staining, respectively. Gene expression profiles were assessed by Affymetrix microarrays. Nuclear factor-κB activity was tested, whereas effects on secreted chemokines/cytokines were confirmed by ELISA and migration studies. Cytokine exposure caused a significant increase in β-cell apoptosis, which was almost completely prevented by 1,25(OH)2D3. In addition, 1,25(OH)2D3 restored insulin secretion from cytokine-exposed islets. Microarray analysis of murine islets revealed that the expression of approximately 4000 genes was affected by cytokines after 6 and 24 hours (n = 4; >1.3-fold; P < .02), of which nearly 250 genes were modified by 1,25(OH)2D3. These genes belong to functional groups involved in immune response, chemotaxis, cell death, and pancreatic β-cell function/phenotype. In conclusion, these findings demonstrate a direct protective effect of 1,25(OH)2D3 against inflammation-induced β-cell dysfunction and death in human and murine islets, with, in particular, alterations in chemokine production by the islets. These effects may contribute to the beneficial effects of 1,25(OH)2D3 against the induction of autoimmune diabetes.
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Affiliation(s)
- H Wolden-Kirk
- Clinical and Experimental Endocrinology (H.W.-K., D.R., H.K., L.O., C.M.), University Hospital Gasthuisberg, Gene Expression Unit (L.V.L., F.S.), Department of Molecular and Cellular Medicine, Department of Microbiology and Immunology (P.P.), B-3000 Leuven, Belgium; Hans Christian Andersen Children's Hospital (H.W.-K., H.T.C.) and Department of Clinical Genetics (K.B., D.L.E.), Odense University Hospital, DK-5000, Odense, Denmark; Department of Endocrinology and Metabolism (M.B., P.M.), Metabolic Unit, and Department of General Pathology (M.M.), University of Pisa, Pisa, Italy; and Laboratory of Experimental Medicine (D.L.E.), Université Libre de Bruxelles, B-1070 Brussels, Belgium
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Adorini L, Amuchastegui S, Corsiero E, Laverny G, Le Meur T, Penna G. Vitamin D receptor agonists as anti-inflammatory agents. Expert Rev Clin Immunol 2014; 3:477-89. [DOI: 10.1586/1744666x.3.4.477] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Azab SFA, Saleh SH, Elsaeed WF, Abdelsalam SM, Ali AA, Esh AMH. Vitamin D status in diabetic Egyptian children and adolescents: a case-control study. Ital J Pediatr 2013; 39:73. [PMID: 24228797 PMCID: PMC3834534 DOI: 10.1186/1824-7288-39-73] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Accepted: 11/13/2013] [Indexed: 12/02/2022] Open
Abstract
Background Recently, studies suggesting that vitamin D deficiency correlates with the severity and frequency of Type 1 (insulin-dependent) diabetes mellitus (T1DM) and that vitamin D supplementation reduces the risk of developing T1DM have been reported. Objective In this study, we aimed to assess vitamin D status in Egyptian children and adolescents with T1DM. Methods This was a case–control study including 80 T1DM diagnosed cases aged 6 to 16 years and 40 healthy children with comparable age and gender as the control group. For all subjects, serum 25 (OH) D levels were measured by ELISA, Serum parathyroid hormone (PTH) and serum insulin were measured by an electrochemiluminesce immunoassay. Serum glucose, Glycosylated hemoglobin (HbA1c) levels and homeostasis model assessment of insulin resistance (HOMA-IR) were also assessed. Results Compared to the control group, serum vitamin D levels were not significantly lower in diabetic subjects (24.7 ± 5.6 vs 26.5 ± 4.8 ng/ml; P > 0.05). Among diabetic cases 44(55%) were vitamin D deficient; meanwhile 36(45%) cases had normal vitamin D level (P < 0.01). In addition, 26(32.5%) diabetic cases had 2ry hyperparathyroidism and 54(67.5%) cases had normal parathyroid hormone level; meanwhile, none of the control group had 2ry hyperparathyroidism (P < 0.01). Furthermore, we found a significant difference between vitamin D deficient diabetic cases and those with normal vitamin D level as regards HOMA-IR and diabetes duration (P < 0.01). Conclusion Public health message on the importance of vitamin D status; especially in diabetic children and adolescents, should be disseminated to the public.
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Affiliation(s)
- Seham F A Azab
- Department of Pediatrics, Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, Sharkia Governorate, Egypt.
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Persistent suppression of type 1 diabetes by a multicomponent vaccine containing a cholera toxin B subunit-autoantigen fusion protein and complete Freund's adjuvant. Clin Dev Immunol 2013; 2013:578786. [PMID: 24319466 PMCID: PMC3844183 DOI: 10.1155/2013/578786] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 08/24/2013] [Accepted: 08/26/2013] [Indexed: 11/29/2022]
Abstract
Data presented here demonstrate multifunctional vaccination strategies that harness vaccinia virus mediated delivery of a gene encoding an immunoenhanced diabetes autoantigen in combination with complete Freund's adjuvant (CFA) that can maintain safe and durable immunologic homeostasis in NOD mice. Systemic coinoculation of prediabetic mice with recombinant vaccinia virus rVV-CTB::GAD and undiluted or 10-fold diluted CFA demonstrated a significant decrease in hyperglycemia and pancreatic islet inflammation in comparison with control animals during 17–61 and 17–105 weeks of age, respectively. Synergy in these beneficial effects was observed during 43–61 and 61–105 wks of age, respectively. Inflammatory cytokine and chemokine levels in GAD-stimulated splenocytes isolated from vaccinated mice were generally lower than those detected in unvaccinated mice. The overall health and humoral immune responses of the vaccinated animals remained normal throughout the duration of the experiments.
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Jia QQ, Wang JC, Long J, Zhao Y, Chen SJ, Zhai JD, Wei LB, Zhang Q, Chen Y, Long HB. Sesquiterpene lactones and their derivatives inhibit high glucose-induced NF-κB activation and MCP-1 and TGF-β1 expression in rat mesangial cells. Molecules 2013; 18:13061-77. [PMID: 24152676 PMCID: PMC6269856 DOI: 10.3390/molecules181013061] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 09/12/2013] [Accepted: 10/14/2013] [Indexed: 01/13/2023] Open
Abstract
Diabetic nephropathy (DN) is one of the most common and serious chronic complications of diabetes mellitus, however, no efficient clinical drugs exist for the treatment of DN. We selected and synthesized several sesquiterpene lactones (SLs), and then used the MTT assay to detect rat mesangial cells (MCs) proliferation, ELISA to measure the expression level of monocyte chemoattractant protein-1 (MCP-1), transforming growth factor beta (TGF-β1) and fibronectin(FN), real-time fluorescent quantitative PCR analysis to measure the MCP-1 and TGF-β1 gene expression, western blot to detect the level of IκBα protein and EMSA to measure the activation of nuclear factor kappa B (NF-κB). We discovered that SLs, including parthenolide (PTL), micheliolide (MCL), arglabin, and isoalantolactone (IAL), as well as several synthetic analogs of these molecules, could effectively attenuate the high glucose-stimulated activation of NF-κB, the degradation of IκBα, and the expression of MCP-1, TGF-β1 and FN in rat mesangial cells (MCs). These findings suggest that SLs and their derivatives have potential as candidate drugs for the treatment of DN.
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Affiliation(s)
- Qian-Qian Jia
- Department of Nephrology, Zhujiang Hospital, Southern Medical University, Guangzhou 510000, China; E-Mails: (Q.-Q.J.); (J.-C.W.); (Y.Z); (S.-J.C.); (L.-B.W.)
| | - Jian-Cheng Wang
- Department of Nephrology, Zhujiang Hospital, Southern Medical University, Guangzhou 510000, China; E-Mails: (Q.-Q.J.); (J.-C.W.); (Y.Z); (S.-J.C.); (L.-B.W.)
| | - Jing Long
- College of Pharmacy, the State Key Laboratory of Elemento-Organic Chemistry, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China; E-Mails: (J.L.); (J.-D.Z.); (Q.Z.); (Y.C.)
| | - Yan Zhao
- Department of Nephrology, Zhujiang Hospital, Southern Medical University, Guangzhou 510000, China; E-Mails: (Q.-Q.J.); (J.-C.W.); (Y.Z); (S.-J.C.); (L.-B.W.)
| | - Si-Jia Chen
- Department of Nephrology, Zhujiang Hospital, Southern Medical University, Guangzhou 510000, China; E-Mails: (Q.-Q.J.); (J.-C.W.); (Y.Z); (S.-J.C.); (L.-B.W.)
| | - Jia-Dai Zhai
- College of Pharmacy, the State Key Laboratory of Elemento-Organic Chemistry, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China; E-Mails: (J.L.); (J.-D.Z.); (Q.Z.); (Y.C.)
| | - Lian-Bo Wei
- Department of Nephrology, Zhujiang Hospital, Southern Medical University, Guangzhou 510000, China; E-Mails: (Q.-Q.J.); (J.-C.W.); (Y.Z); (S.-J.C.); (L.-B.W.)
| | - Quan Zhang
- College of Pharmacy, the State Key Laboratory of Elemento-Organic Chemistry, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China; E-Mails: (J.L.); (J.-D.Z.); (Q.Z.); (Y.C.)
| | - Yue Chen
- College of Pharmacy, the State Key Laboratory of Elemento-Organic Chemistry, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China; E-Mails: (J.L.); (J.-D.Z.); (Q.Z.); (Y.C.)
| | - Hai-Bo Long
- Department of Nephrology, Zhujiang Hospital, Southern Medical University, Guangzhou 510000, China; E-Mails: (Q.-Q.J.); (J.-C.W.); (Y.Z); (S.-J.C.); (L.-B.W.)
- Authors to whom correspondence should be addressed; E-Mail: ; Tel./Fax: +86-20-6278-2305
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Ro H, Lee EW, Hong JH, Han KH, Yeom HJ, Kim HJ, Kim MG, Jung HS, Oh KH, Park KS, Ahn C, Yang J. Roles of Islet Toll-Like Receptors in Pig to Mouse Islet Xenotransplantation. Cell Transplant 2013; 22:1709-22. [DOI: 10.3727/096368912x657684] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Although innate immunity plays important roles in xenograft rejection, there have been few studies on the role of toll-like receptors (TLRs) in xenotransplantation. Furthermore, most studies focused on the recipient's TLRs. Therefore, we investigated whether TLRs in porcine islets can contribute to islet xenograft rejection. Adult porcine islets were isolated and stimulated by polyinosinic/polycytidylic acid (poly I:C) or lipopolysaccharide (LPS). Both poly I:C and LPS stimulation in porcine islets induced expression of chemokines (RANTES, MCP-1, IP-10, and IL-8), cytokines (IL-6 and type I interferons), and adhesion molecules (VCAM-1 and ICAM-1). Porcine islet supernatants stimulated by TLR agonists induced chemotaxis of human leukocytes. They also induced procoagulant activation (tissue factor and fgl-2). However, TLR stimulation did not influence insulin secretion. When porcine MyD88 was knocked down using shRNA lentivirus, TLR-mediated induction of proinflammatory mediators and procoagulants was attenuated. When LPS was injected to MyD88 or TLR4 knockout mice after porcine islet transplantation, LPS stimulation on donor islets interfered with islet xenograft tolerance induction by anti-CD154 antibodies. Inflammatory cell infiltration and expression of proinflammatory chemokines and cytokines in islet xenografts also increased. In conclusion, TLR activation in porcine islets induced both a proinflammatory and procoagulant response and thereby contributed to xenograft rejection.
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Affiliation(s)
- Han Ro
- Transplantation Center, Seoul National University Hospital, Seoul, Republic of Korea
- Transplantation Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Eun Won Lee
- Transplantation Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Joo Ho Hong
- Transplantation Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Kyu Hyun Han
- Transplantation Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hye-Jung Yeom
- Transplantation Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hwa Jung Kim
- Transplantation Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Myung-Gyu Kim
- Transplantation Center, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hye Seung Jung
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Kook-Hwan Oh
- Division of Nephrology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Kyong Soo Park
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Curie Ahn
- Transplantation Center, Seoul National University Hospital, Seoul, Republic of Korea
- Transplantation Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
- Division of Nephrology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jaeseok Yang
- Transplantation Center, Seoul National University Hospital, Seoul, Republic of Korea
- Transplantation Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
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Chen Y, Zhang J, Ge X, Du J, Deb DK, Li YC. Vitamin D receptor inhibits nuclear factor κB activation by interacting with IκB kinase β protein. J Biol Chem 2013; 288:19450-8. [PMID: 23671281 DOI: 10.1074/jbc.m113.467670] [Citation(s) in RCA: 241] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
1,25-Dihydroxyvitamin D (1,25(OH)2D3) is known to suppress NF-κB activity, but the underlying mechanism remains poorly understood. Here we show that the vitamin D receptor (VDR) physically interacts with IκB kinase β (IKKβ) to block NF-κB activation. 1,25(OH)2D3 rapidly attenuates TNFα-induced p65 nuclear translocation and NF-κB activity in a VDR-dependent manner. VDR overexpression inhibits IKKβ-induced NF-κB activity. GST pull-down assays and coimmunoprecipitation experiments demonstrated that VDR physically interacts with IKKβ and that this interaction is enhanced by 1,25(OH)2D3. Protein mapping reveals that VDR-IKKβ interaction occurs between the C-terminal portions of the VDR and IKKβ proteins. Reconstitution of VDR(-/-) cells with the VDR C terminus restores the ability to block TNFα-induced NF-κB activation and IL-6 up-regulation. VDR-IKKβ interaction disrupts the formation of the IKK complex and, thus, abrogates IKKβ phosphorylation at Ser-177 and abolishes IKK activity to phosphorylate IκBα. Consequently, stabilization of IκBα arrests p65/p50 nuclear translocation. Together, these data define a novel mechanism whereby 1,25(OH)2D3-VDR inhibits NF-κB activation.
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Affiliation(s)
- Yunzi Chen
- Laboratory of Metabolic Disease Research and Drug Development, China Medical University, Shenyang 110000, China
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Choi M, Park H, Cho S, Lee M. Vitamin D3 supplementation modulates inflammatory responses from the muscle damage induced by high-intensity exercise in SD rats. Cytokine 2013; 63:27-35. [PMID: 23669253 DOI: 10.1016/j.cyto.2013.03.018] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 03/15/2013] [Accepted: 03/19/2013] [Indexed: 10/26/2022]
Abstract
Vitamin D is an important factor for calcium and phosphorus homeostasis. A negative relationship has been observed between vitamin D status and diseases such as cancer, arthritis, diabetes, and muscle fiber atrophy. However, the relationship between vitamin D and prevention of skeletal muscle damage has not been clearly elucidated. The purpose of this study was to investigate the effects of vitamin D on exercise-induced muscle changes. Rats were divided into 3 groups: (1) sedentary control (C: n=10), (2) high-intensity exercise (HE: n=10), and (3) high-intensity exercise with vitamin D supplementation (HED: n=10; i.p. 1000 IU/kg body weight). Rats were trained for 30 min/day on treadmills (5 days/week for 8 weeks) with the running speed gradually increased up to 30 m/min at a 3° incline. At the end of the training period, the running speed was 38 m/min at a 5° incline. The high-intensity exercise significantly increased plasma creatine kinase (CK) and lactate dehydrogenase (LDH) activity. In addition, IL-6 and TNF-α levels as well as phosphorylation of AMPK, p38, ERK1/2, IKK, and IκB were significantly increased. Vitamin D-treated rats showed a significant decrease in plasma CK level, phosphorylation of AMPK, p38, ERK1/2, IKK, and IκB, and gene expression of IL-6 and TNF-α. Furthermore, the protein expression of vitamin D receptor (VDR) was highly increased in the muscles of HED-treated rats, respectively. Therefore, we concluded that vitamin D may play a pivotal role in exercise-induced muscle damage and inflammation through the modulation of MAPK and NF-κB involved with VDR.
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Affiliation(s)
- Munji Choi
- Dept. of Food and Nutrition and Research Institute of Obesity Sciences, Sungshin Women's University, Seoul, Republic of Korea
| | - Hyon Park
- Exercise Nutrition & Biochem Lab, Kyung Hee University, Yongin, Republic of Korea
| | - Seongsuk Cho
- Taeneung National Training Center of Korean Olympic Committee, Seoul, Republic of Korea
| | - Myoungsook Lee
- Dept. of Food and Nutrition and Research Institute of Obesity Sciences, Sungshin Women's University, Seoul, Republic of Korea.
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