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Aggeletopoulou I, Tsounis EP, Triantos C. Vitamin D and Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD): Novel Mechanistic Insights. Int J Mol Sci 2024; 25:4901. [PMID: 38732118 PMCID: PMC11084591 DOI: 10.3390/ijms25094901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/23/2024] [Accepted: 04/29/2024] [Indexed: 05/13/2024] Open
Abstract
Metabolic dysfunction-associated steatotic liver disease (MASLD) is an increasingly prevalent condition characterized by abnormal fat accumulation in the liver, often associated with metabolic disorders. Emerging evidence suggests a potential link between vitamin D deficiency and the development and progression of MASLD. The current review provides a concise overview of recent studies uncovering novel mechanistic insights into the interplay between vitamin D and MASLD. Several epidemiological studies have highlighted a significant association between low vitamin D levels and an increased risk of MASLD. Vitamin D, traditionally known for its role in bone health, has now been recognized as a key player in various physiological processes, including immune regulation and inflammation. Experimental studies using animal models have demonstrated that vitamin D deficiency exacerbates liver steatosis and inflammation, suggesting a potential protective role against MASLD. Mechanistically, vitamin D appears to modulate MASLD through multiple pathways. Firstly, the vitamin D receptor (VDR) is abundantly expressed in liver cells, indicating a direct regulatory role in hepatic function. Activation of the VDR has been shown to suppress hepatic lipid accumulation and inflammation, providing a mechanistic basis for the observed protective effects. Additionally, vitamin D influences insulin sensitivity, a critical factor in MASLD pathogenesis. Improved insulin sensitivity may mitigate the excessive accumulation of fat in the liver, thus attenuating MASLD progression. In parallel, vitamin D exhibits anti-inflammatory properties by inhibiting pro-inflammatory cytokines implicated in MASLD pathophysiology. Experimental evidence suggests that the immunomodulatory effects of vitamin D extend to the liver, reducing inflammation and oxidative stress, key drivers of MASLD, and the likelihood of hepatocyte injury and fibrosis. Understanding the complex interplay between vitamin D and MASLD provides a basis for exploring targeted therapeutic strategies and preventive interventions. As vitamin D deficiency is a modifiable risk factor, addressing this nutritional concern may prove beneficial in mitigating the burden of MASLD and associated metabolic disorders.
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Affiliation(s)
| | | | - Christos Triantos
- Division of Gastroenterology, Department of Internal Medicine, University Hospital of Patras, 26504 Patras, Greece; (I.A.); (E.P.T.)
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Shafi T, Rasool Wani R, Hussain S, Bhat IA, Makhdoomi R, Bashir SA, Hassan I, Shah ZA. Investigating dysregulation of TGF-β1/SMAD3 signaling in atopic dermatitis: a molecular and immunohistochemical analysis. Clin Exp Immunol 2024; 216:192-199. [PMID: 38066678 PMCID: PMC11036103 DOI: 10.1093/cei/uxad130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 10/07/2023] [Accepted: 12/02/2023] [Indexed: 04/24/2024] Open
Abstract
Atopic dermatitis (AD) is a persistent and recurring inflammatory condition affecting the skin. An expanding corpus of evidence indicates the potential participation of transforming growth factor-β1 (TGF-β1) in the modulation of inflammation and tissue remodeling in AD. The primary objective of this study was to examine the aberrant modulation of TGF-β1/small mothers against decapentaplegic homolog 3 (SMAD3) signaling through a comprehensive analysis of their molecular and protein expression profiles. The study encompassed an aggregate of 37 participants, which included 25 AD patients and 12 controls. The assessment of mRNA and protein levels of TGF-β1 and SMAD3 was conducted utilizing quantitative real-time PCR and immunohistochemistry (IHC), whereas serum IgE and vitamin D levels were estimated by ELISA and chemiluminescence, respectively. Quantitative analysis demonstrated a 2.5-fold upregulation of TGF-β1 mRNA expression in the lesional AD skin (P < 0.0001). IHC also exhibited a comparable augmented pattern, characterized by moderate to strong staining intensities. In addition, TGF-β1 mRNA showed an association with vitamin D deficiency in serum (P < 0.02), and its protein expression was linked with the disease severity (P < 0.01) Furthermore, a significant decrease in the expression of the SMAD3 gene was observed in the affected skin (P = 0.0004). This finding was further confirmed by evaluating the protein expression and phosphorylation of SMAD3, both of which exhibited a decrease. These findings suggest that there is a dysregulation in the TGF-β1/SMAD3 signaling pathway in AD. Furthermore, the observed augmentation in mRNA and protein expression of TGF-β1, along with its correlation with the disease severity, holds considerable clinical significance and emphasizes its potential role in AD pathogenesis.
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Affiliation(s)
- Tabasum Shafi
- Department of Immunology and Molecular Medicine, SKIMS, Srinagar, India-190011
| | - Roohi Rasool Wani
- Department of Immunology and Molecular Medicine, SKIMS, Srinagar, India-190011
| | - Showkat Hussain
- Department of Immunology and Molecular Medicine, SKIMS, Srinagar, India-190011
| | - Imtiyaz A Bhat
- Department of Immunology and Molecular Medicine, SKIMS, Srinagar, India-190011
| | | | - Sheikh Adil Bashir
- Department of Plastic and Reconstructive Surgery, SKIMS, Srinagar, India-190011
| | - Iffat Hassan
- Department of Dermatology, Venereology, and Leprosy, GMC, Srinagar, India-190010
| | - Zafar A Shah
- Department of Immunology and Molecular Medicine, SKIMS, Srinagar, India-190011
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Schavinski AZ, Reis NG, Morgan HJN, Assis AP, Moro ML, Valentim RR, Seni-Silva AC, Ramos ES, Kettelhut IC, Navegantes LCC. Maternal Vitamin D Deficiency Impairs the Development of β Cells in Offspring Rats in a Sex-Dependent Manner. Int J Mol Sci 2024; 25:4136. [PMID: 38673723 PMCID: PMC11050228 DOI: 10.3390/ijms25084136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/03/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024] Open
Abstract
Recent studies have shown that maternal vitamin D deficiency (VDD) causes long-term metabolic changes in offspring. However, little is known about the impact of maternal VDD on offspring endocrine pancreas development and insulin secretion in the adult life of male and female animals. Female rats (Wistar Hannover) were fed either control (1000 IU Vitamin D3/kg), VDD (0 IU Vitamin D3/kg), or a Ca2+-enriched VDD diet (0 IU Vitamin D3/kg + Ca2+ and P/kg) for 6 weeks and during gestation and lactation. At weaning, VDD status was confirmed based on low serum calcidiol levels in dams and pups. Next, male and female offspring were randomly separated and fed a standard diet for up to 90 days. At this age, serum calcidiol levels were restored to normal levels in all groups, but serum insulin levels were decreased in VDD males without affecting glucagon levels, glycemia, or glucose tolerance. Islets isolated from VDD males showed lower insulin secretion in response to different glucose concentrations, but this effect was not observed in VDD females. Furthermore, VDD males, but not females, showed a smaller total pancreatic islet area and lower β cell mass, an effect that was accompanied by reduced gene expression of Ins1, Ins2, Pdx1, and SLC2A2. The decrease in Pdx1 expression was not related to the methylation profile of the promoter region of this gene. Most of these effects were observed in the male VDD+Ca2+ group, indicating that the effects were not due to alterations in Ca2+ metabolism. These data show that maternal VDD selectively impairs the morphology and function of β cells in adult male offspring rats and that female offspring are fully protected from these deleterious effects.
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Affiliation(s)
- Aline Z. Schavinski
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (A.Z.S.); (N.G.R.); (H.J.N.M.); (M.L.M.); (R.R.V.)
| | - Natany G. Reis
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (A.Z.S.); (N.G.R.); (H.J.N.M.); (M.L.M.); (R.R.V.)
| | - Henrique J. N. Morgan
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (A.Z.S.); (N.G.R.); (H.J.N.M.); (M.L.M.); (R.R.V.)
| | - Ana Paula Assis
- Department of Biochemistry/Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (A.P.A.); (I.C.K.)
| | - Matheus L. Moro
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (A.Z.S.); (N.G.R.); (H.J.N.M.); (M.L.M.); (R.R.V.)
| | - Rafael R. Valentim
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (A.Z.S.); (N.G.R.); (H.J.N.M.); (M.L.M.); (R.R.V.)
| | - Ana Carolina Seni-Silva
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (A.C.S.-S.); (E.S.R.)
| | - Ester S. Ramos
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (A.C.S.-S.); (E.S.R.)
| | - Isis C. Kettelhut
- Department of Biochemistry/Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (A.P.A.); (I.C.K.)
| | - Luiz C. C. Navegantes
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (A.Z.S.); (N.G.R.); (H.J.N.M.); (M.L.M.); (R.R.V.)
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Kilic A, Halu A, De Marzio M, Maiorino E, Duvall MG, Bruggemann TR, Rojas Quintero JJ, Chase R, Mirzakhani H, Sungur AÖ, Koepke J, Nakano T, Peh HY, Krishnamoorthy N, Abdulnour RE, Georgopoulos K, Litonjua AA, Demay M, Renz H, Levy BD, Weiss ST. Vitamin D constrains inflammation by modulating the expression of key genes on Chr17q12-21.1. eLife 2024; 12:RP89270. [PMID: 38567749 PMCID: PMC10990493 DOI: 10.7554/elife.89270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024] Open
Abstract
Vitamin D possesses immunomodulatory functions and vitamin D deficiency has been associated with the rise in chronic inflammatory diseases, including asthma (Litonjua and Weiss, 2007). Vitamin D supplementation studies do not provide insight into the molecular genetic mechanisms of vitamin D-mediated immunoregulation. Here, we provide evidence for vitamin D regulation of two human chromosomal loci, Chr17q12-21.1 and Chr17q21.2, reliably associated with autoimmune and chronic inflammatory diseases. We demonstrate increased vitamin D receptor (Vdr) expression in mouse lung CD4+ Th2 cells, differential expression of Chr17q12-21.1 and Chr17q21.2 genes in Th2 cells based on vitamin D status and identify the IL-2/Stat5 pathway as a target of vitamin D signaling. Vitamin D deficiency caused severe lung inflammation after allergen challenge in mice that was prevented by long-term prenatal vitamin D supplementation. Mechanistically, vitamin D induced the expression of the Ikzf3-encoded protein Aiolos to suppress IL-2 signaling and ameliorate cytokine production in Th2 cells. These translational findings demonstrate mechanisms for the immune protective effect of vitamin D in allergic lung inflammation with a strong molecular genetic link to the regulation of both Chr17q12-21.1 and Chr17q21.2 genes and suggest further functional studies and interventional strategies for long-term prevention of asthma and other autoimmune disorders.
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Affiliation(s)
- Ayse Kilic
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical SchoolBostonUnited States
| | - Arda Halu
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical SchoolBostonUnited States
| | - Margherita De Marzio
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical SchoolBostonUnited States
- Department of Environmental Health, Harvard TH Chan School of Public HealthBostonUnited States
| | - Enrico Maiorino
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical SchoolBostonUnited States
| | - Melody G Duvall
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical SchoolBostonUnited States
| | - Thayse Regina Bruggemann
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical SchoolBostonUnited States
| | - Joselyn J Rojas Quintero
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical SchoolBostonUnited States
| | - Robert Chase
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical SchoolBostonUnited States
| | - Hooman Mirzakhani
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical SchoolBostonUnited States
| | - Ayse Özge Sungur
- Behavioral Neuroscience, Experimental and Biological Psychology, Philipps-UniversityMarburgGermany
- Excellence Cluster Cardio-Pulmonary System (ECCPS), Justus Liebig University GiessenGiessenGermany
| | - Janine Koepke
- Excellence Cluster Cardio-Pulmonary System (ECCPS), Justus Liebig University GiessenGiessenGermany
| | - Taiji Nakano
- Department of Pediatrics, Graduate School of Medicine, Chiba UniversityChibaJapan
| | - Hong Yong Peh
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical SchoolBostonUnited States
| | - Nandini Krishnamoorthy
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical SchoolBostonUnited States
| | - Raja-Elie Abdulnour
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical SchoolBostonUnited States
| | - Katia Georgopoulos
- Cutaneous Biology Research Center, Massachusetts General Hospital and Harvard Medical SchoolBostonUnited States
| | - Augusto A Litonjua
- Division of Pediatric Pulmonary Medicine, Golisano Children’s Hospital at Strong, University of Rochester Medical CenterRochesterUnited States
| | - Marie Demay
- Endocrine Unit, Massachusetts General Hospital and Harvard Medical SchoolBostonUnited States
| | - Harald Renz
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University of Marburg and German Center for Lung Research (DZL)MarburgGermany
- Department of Clinical Immunology and Allergology, Laboratory of Immunopathology Sechenov UniversityMoscowRussian Federation
| | - Bruce D Levy
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical SchoolBostonUnited States
| | - Scott T Weiss
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical SchoolBostonUnited States
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Haroun N, Bennour I, Seipelt E, Astier J, Sani L, Tardivel C, Svilar L, Martin JC, Mounien L, Landrier JF. Maternal Vitamin D Deficiency in Mice Sex-Dependently Affects Hepatic Lipid Accumulation in Offspring. Mol Nutr Food Res 2024; 68:e2300290. [PMID: 38010607 DOI: 10.1002/mnfr.202300290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 10/18/2023] [Indexed: 11/29/2023]
Abstract
SCOPE Vitamin D deficiency (VDD) is becoming a global issue and low 25-hydroxyvitamin D (25(OH)D) plasma levels have been linked to hepatic steatosis in adulthood. Nevertheless, the impact of maternal VDD on lipid metabolism and hepatic steatosis remains poorly documented, especially under obesogenic condition. The goal of this study is to assess the effects of maternal VDD on hepatic lipid accumulation in adult offspring fed a normal or obesogenic diet. METHODS AND RESULTS Several approaches are implemented including histology and lipidomics on the liver in both males and females. No major impact of high-fat (HF) or VDD is observed at histological level in both males and females. Nevertheless, in males born from VDD mice and fed an HF diet, an increase of total lipids and modulation of the relative lipid species distribution characterized by a decrease of triglycerides and increase of phospholipids is observed. In female no major lipid profile is noticed. CONCLUSION Maternal VDD combined with a HF diet in male may predispose to hepatic hypertrophia, with a specific lipid profile. Such observations reinforce our knowledge of the impact of maternal VDD on hepatic programming in the offspring.
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Affiliation(s)
- Nicole Haroun
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, 13000, France
| | - Imene Bennour
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, 13000, France
| | - Eva Seipelt
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, 13000, France
| | - Julien Astier
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, 13000, France
| | - Léa Sani
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, 13000, France
| | - Catherine Tardivel
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, 13000, France
- Biomet, C2VN, CriBiom, Marseille, 13000, France
| | - Ljubica Svilar
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, 13000, France
- Biomet, C2VN, CriBiom, Marseille, 13000, France
| | - Jean-Charles Martin
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, 13000, France
- Biomet, C2VN, CriBiom, Marseille, 13000, France
| | - Lourdes Mounien
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, 13000, France
- PhenoMARS, C2VN, CriBiom, Marseille, 13000, France
| | - Jean François Landrier
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, 13000, France
- PhenoMARS, C2VN, CriBiom, Marseille, 13000, France
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Renieris G, Foutadakis S, Andriopoulou T, Spanou VM, Droggiti DE, Kafousopoulos D, Gkavogianni T, Damoraki G, Vatsellas G, Giamarellos-Bourboulis EJ. Association of Vitamin D with Severity and Outcome of COVID-19: Clinical and Experimental Evidence. J Innate Immun 2023; 16:1-11. [PMID: 38008066 PMCID: PMC10764091 DOI: 10.1159/000535302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 11/13/2023] [Indexed: 11/28/2023] Open
Abstract
INTRODUCTION The role of vitamin in COVID-19 remains controversial. We investigated the association between endogenous vitamin D and the severity of COVID-19 as well as the mechanisms of action of vitamin D supplementation. METHODS 25(OH)D3 in serum was associated with disease severity and outcome in 190 COVID-19 patients. In a COVID-19 animal model using intravenous injection of plasma from patients with COVID-19 acute respiratory distress syndrome into C57/BL6 mice, mice were treated with 0.25 μg human 1,25(OH)D3 or vehicle. Mice were sacrificed on day 4. Cytokines and myeloperoxidase (MPO) in tissues were measured. Changes in gene expression after vitamin D supplementation were measured. RESULTS Vitamin D deficiency and insufficiency were associated with increased severity and unfavorable outcome after 28 days. Vitamin D levels were negatively associated with biomarkers of COVID-19 severity. Vitamin D supplementation after challenge of mice with COVID-19 plasma led to reduced levels of TNFα, IL-6, IFNγ, and MPO in the lung, as well as down-regulation of pro-inflammatory pathways. CONCLUSION Normal levels of endogenous vitamin D are associated with reduced severity and risk of unfavorable outcome in COVID-19, possibly through attenuation of tissue-specific hyperinflammation.
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Affiliation(s)
- Georgios Renieris
- 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Spyros Foutadakis
- Greek Genome Center, Biomedical Research Foundation (BRFAA) of the Academy of Athens, Athens, Greece
| | - Theano Andriopoulou
- 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Victoria-Marina Spanou
- 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Dionyssia-Eirini Droggiti
- 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Dionysios Kafousopoulos
- 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Theologia Gkavogianni
- 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Georgia Damoraki
- 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Giannis Vatsellas
- Greek Genome Center, Biomedical Research Foundation (BRFAA) of the Academy of Athens, Athens, Greece
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Guo Y, Li Y, Tang Z, Geng C, Xie X, Song S, Wang C, Li X. Compromised NHE8 Expression Is Responsible for Vitamin D-Deficiency Induced Intestinal Barrier Dysfunction. Nutrients 2023; 15:4834. [PMID: 38004229 PMCID: PMC10674576 DOI: 10.3390/nu15224834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023] Open
Abstract
Objectives: Vitamin D (VitD) and Vitamin D receptor (VDR) are suggested to play protective roles in the intestinal barrier in ulcerative colitis (UC). However, the underlying mechanisms remain elusive. Evidence demonstrates that Na+/H+ exchanger isoform 8 (NHE8, SLC9A8) is essential in maintaining intestinal homeostasis, regarded as a promising target for UC therapy. Thus, this study aims to investigate the effects of VitD/VDR on NHE8 in intestinal protection. Methods: VitD-deficient mice, VDR-/- mice and NHE8-/- mice were employed in this study. Colitis mice were established by supplementing DSS-containing water. Caco-2 cells and 3D-enteroids were used for in vitro studies. VDR siRNA (siVDR), VDR over-expression plasmid (pVDR), TNF-α and NF-κb p65 inhibitor QNZ were used for mechanical studies. The expression of interested proteins was detected by multiple techniques. Results: In colitis mice, paricalcitol upregulated NHE8 expression was accompanied by restoring colonic mucosal injury. In VitD-deficient and VDR-/- colitis mice, NHE8 expression was compromised with more serious mucosal damage. Noteworthily, paricalcitol could not prevent intestinal barrier dysfunction and histological destruction in NHE8-/- mice. In Caco-2 cells and enteroids, siVDR downregulated NHE8 expression, further promoted TNF-α-induced NHE8 downregulation and stimulated TNF-α-induced NF-κb p65 phosphorylation. Conversely, QNZ blocked TNF-α-induced NHE8 downregulation in the absence or presence of siVDR. Conclusions: Our study indicates depressed NHE8 expression is responsible for VitD-deficient-induced colitis aggravation. These findings provide novel insights into the molecular mechanisms of VitD/VDR in intestine protection in UC.
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Affiliation(s)
- Yaoyu Guo
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610041, China; (Y.G.); (Y.L.); (X.X.); (S.S.)
| | - Yanni Li
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610041, China; (Y.G.); (Y.L.); (X.X.); (S.S.)
| | - Zeya Tang
- Department of Outpatient, West China Hospital, Sichuan University, Chengdu 610041, China;
| | - Chong Geng
- Laboratory of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610041, China;
| | - Xiaoxi Xie
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610041, China; (Y.G.); (Y.L.); (X.X.); (S.S.)
| | - Shuailing Song
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610041, China; (Y.G.); (Y.L.); (X.X.); (S.S.)
| | - Chunhui Wang
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610041, China; (Y.G.); (Y.L.); (X.X.); (S.S.)
| | - Xiao Li
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610041, China; (Y.G.); (Y.L.); (X.X.); (S.S.)
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8
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Minisola S, Merlotti D. The Effect of Vitamin D on Metabolic Bone Disease and Chronic Diseases. Nutrients 2023; 15:4775. [PMID: 38004169 PMCID: PMC10674263 DOI: 10.3390/nu15224775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
The history of vitamin D begins more than 100 years ago, with the initial documentation of rickets in industrialized cities of England [...].
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Affiliation(s)
- Salvatore Minisola
- Department of Clinical, Internal Medicine, Cardiovascular and Anesthesiological Sciences, “Sapienza” University of Rome, Viale del Policlinico 155, 00161 Rome, Italy
| | - Daniela Merlotti
- Department of Medical Sciences, Azienda Ospedaliera Universitaria Senese, 53100 Siena, Italy;
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Argano C, Mirarchi L, Amodeo S, Orlando V, Torres A, Corrao S. The Role of Vitamin D and Its Molecular Bases in Insulin Resistance, Diabetes, Metabolic Syndrome, and Cardiovascular Disease: State of the Art. Int J Mol Sci 2023; 24:15485. [PMID: 37895163 PMCID: PMC10607188 DOI: 10.3390/ijms242015485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/11/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
In the last decade, an increasing awareness was directed to the role of Vitamin D in non-skeletal and preventive roles for chronic diseases. Vitamin D is an essential hormone in regulating calcium/phosphorous balance and in the pathogenesis of inflammation, insulin resistance, and obesity. The main forms of vitamin D, Cholecalciferol (Vitamin D3) and Ergocalciferol (Vitamin D2) are converted into the active form (1,25-dihydroxyvitamin D) thanks to two hydroxylations in the liver, kidney, pancreas, and immune cells. Some anti-inflammatory cytokines are produced at higher levels by vitamin D, while some pro-inflammatory cytokines are released at lower levels. Toll-Like Receptor (TLR) expression is increased, and a pro-inflammatory state is also linked to low levels of vitamin D. Regardless of how it affects inflammation, various pathways suggest that vitamin D directly improves insulin sensitivity and secretion. The level of vitamin D in the body may change the ratio of pro- to anti-inflammatory cytokines, which would impact insulin action, lipid metabolism, and the development and function of adipose tissue. Many studies have demonstrated an inverse relationship between vitamin D concentrations and pro-inflammatory markers, insulin resistance, glucose intolerance, metabolic syndrome, obesity, and cardiovascular disease. It is interesting to note that several long-term studies also revealed an inverse correlation between vitamin D levels and the occurrence of diabetes mellitus. Vitamin D supplementation in people has controversial effects. While some studies demonstrated improvements in insulin sensitivity, glucose, and lipid metabolism, others revealed no significant effect on glycemic homeostasis and inflammation. This review aims to provide insight into the molecular basis of the relationship between vitamin D, insulin resistance, metabolic syndrome, type 1 and 2 diabetes, gestational diabetes, and cardiovascular diseases.
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Affiliation(s)
- Christiano Argano
- Department of Internal Medicine, National Relevance and High Specialization Hospital Trust ARNAS Civico Di Cristina Benfratelli, 90127 Palermo, Italy; (L.M.); (S.A.); (V.O.); (A.T.); (S.C.)
| | - Luigi Mirarchi
- Department of Internal Medicine, National Relevance and High Specialization Hospital Trust ARNAS Civico Di Cristina Benfratelli, 90127 Palermo, Italy; (L.M.); (S.A.); (V.O.); (A.T.); (S.C.)
| | - Simona Amodeo
- Department of Internal Medicine, National Relevance and High Specialization Hospital Trust ARNAS Civico Di Cristina Benfratelli, 90127 Palermo, Italy; (L.M.); (S.A.); (V.O.); (A.T.); (S.C.)
| | - Valentina Orlando
- Department of Internal Medicine, National Relevance and High Specialization Hospital Trust ARNAS Civico Di Cristina Benfratelli, 90127 Palermo, Italy; (L.M.); (S.A.); (V.O.); (A.T.); (S.C.)
| | - Alessandra Torres
- Department of Internal Medicine, National Relevance and High Specialization Hospital Trust ARNAS Civico Di Cristina Benfratelli, 90127 Palermo, Italy; (L.M.); (S.A.); (V.O.); (A.T.); (S.C.)
| | - Salvatore Corrao
- Department of Internal Medicine, National Relevance and High Specialization Hospital Trust ARNAS Civico Di Cristina Benfratelli, 90127 Palermo, Italy; (L.M.); (S.A.); (V.O.); (A.T.); (S.C.)
- Department of Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Medical Specialties, [PROMISE], University of Palermo, 90127 Palermo, Italy
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Butler AE, Brennan E, Drage DS, Sathyapalan T, Atkin SL. Association of flame retardants, polybrominated diethyl ethers (PBDEs), with vitamin D in female subjects. Chemosphere 2023; 338:139488. [PMID: 37442384 DOI: 10.1016/j.chemosphere.2023.139488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 07/07/2023] [Accepted: 07/11/2023] [Indexed: 07/15/2023]
Abstract
INTRODUCTION A class of flame retardants, polybrominated diethyl ethers (PBDEs), are known endocrine disrupters and may induce the hepatic enzymes CYP24 and CYP3A that promote 25-hydroxylation of vitamin D3. Therefore, this study examined the association of PBDEs with vitamin D3 (25(OH)D3) and the active 1,25-dihydrovitamin D3 (1,25(OH)2D3) in a cohort of non-obese women. METHODS 58 female participants (age:31.9 ± 4.6 years; body mass index (BMI):25.7 ± 3.7 kg/m2) had seven indicator PBDEs [PBDE28; PBDE47; PBDE99; PBDE100; PBDE153; PBDE154; PBDE183] measured using high resolution gas chromatography, with ƩPBDE level calculated. 25(OH)D3 and 1,25(OH)2D3 levels were determined by isotope-dilution liquid chromatography tandem mass spectrometry. Plasma level of calcium/calmodulin-dependent protein kinase type 1 (CaMK1) was measured by Somascan proteomics. RESULTS In this cohort, vitamin D3 (25(OH)D3) and 1,25(OH)2D3 levels were 22.9 ± 11.2 ng/mL and 0.05 ± 0.02 ng/mL, respectively. Of those, 28 had vitamin D deficiency [25(OH)D3 level <20 ng/mL (<50 nmol/L)]. For the whole group, individual PBDEs (PBDE28; PBDE47; PBDE99; PBDE100; PBDE153; PBDE154; PBDE183) and ƩPBDEs did not correlate with 25(OH)D3 or its active metabolite 1,25(OH)2D3 nor with BMI. For the subset who were 25(OH)D3 sufficient, negative correlations were found for 1,25(OH)2D3 with PBDE153 (ρ = -0.77; p = 0.02) and PBDE100 (ρ = -0.72; p = 0.005). In the subset of women who were 25(OH)D3 deficient, positive correlations were found for 1,25(OH)2D3 with PBDE153 (ρ = 0.68; p = 0.02) and ƩPBDEs (ρ = 0.57; p = 0.03). Using sufficient and deficient subset categories, no correlations were seen with 25(OH)D3 nor any of the PBDEs, and PBDEs did not correlate to renal function (estimated glomerular filtration rate, eGFR). 1,25(OH)2D3 was negatively associated with CaMK1 (r = -0.36; p = 0.03) as was PBDE153 (r = -0.31; p = 0.02). CONCLUSION PBDEs were not associated with 25(OH)D3, but PBDE100 and 153 correlated with its active 1,25(OH)2D3 metabolite and PBDE153 correlated to the calcium modulator CaMKI, suggesting that PBDE effects could either be mediated through vitamin D status or that functional inactivation or inhibition of 1,25(OH)2D3 may contribute to the impact of vitamin D deficiency.
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Affiliation(s)
- Alexandra E Butler
- School of Medicine, Royal College of Surgeons in Ireland-Medical University of Bahrain, Busaiteen, Bahrain.
| | - Edwina Brennan
- School of Medicine, Royal College of Surgeons in Ireland-Medical University of Bahrain, Busaiteen, Bahrain
| | - Daniel S Drage
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, West Midlands, B15 2TT, UK; Queensland Alliance for Environmental Health Sciences, The University of Queensland, 39 Kessels Road, Coopers Plains, Qld, 4108, Australia
| | | | - Stephen L Atkin
- School of Medicine, Royal College of Surgeons in Ireland-Medical University of Bahrain, Busaiteen, Bahrain
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Grover I, Singh N, Gunjan D, Benjamin J, Ramakrishnan L, Pandey R, Sati HC, Saraya A. Vitamin D status & bone health in patients with liver cirrhosis. Indian J Med Res 2023; 158:284-291. [PMID: 37815065 PMCID: PMC10720958 DOI: 10.4103/ijmr.ijmr_1144_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Indexed: 10/11/2023] Open
Abstract
Background & objectives Vitamin D plays an important role in bone metabolism, and liver is the intermediary site of vitamin D metabolism. The purpose of this study was to study the prevalence of vitamin D deficiency and bone health in patients with cirrhosis. Methods Prospectively, serum 25-hydroxy vitamin D [25(OH)D] level were assessed in cirrhotics by chemiluminescence method. Endocrine Society Clinical practice guideline was used to define deficiency and insufficiency of vitamin D. Bone mineral density (BMD) was assessed using dual-energy X-ray absorptiometry and the World Health Organization criteria was used to define osteoporosis and osteopenia. The lowest T score at the left hip neck or lumbar spine was taken as osteoporosis or osteopenia. The Child-Turcotte-Pugh score was used to assess the severity of cirrhosis. Results Cirrhotics (n=350, male: 278, compensated: 210) were included. Mean serum 25(OH)D level was 8.75 ng/ml. The prevalence of vitamin D deficiency (VDD) and low-BMD (osteopenia and osteoporosis) was 89.4 and 86 per cent, respectively. VDD, insufficiency and osteoporosis was found in 86.7, 11.9 and 33.8 per cent, respectively, in patients with compensated cirrhosis; and 93.6, 3.6 and 40 per cent, respectively, in patients with decompensated cirrhosis. Body mass index of >25 kg/m2 was protective for bone health. Interpretation & conclusions VDD and low-BMD is prevalent in Indian patients with cirrhosis and should be looked for in patients with cirrhosis for its prevention.
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Affiliation(s)
- Indu Grover
- Department of Gastroenterology & Human Nutrition Unit, All India Institute of Medical Sciences, New Delhi, India
| | - Namrata Singh
- Department of Gastroenterology & Human Nutrition Unit, All India Institute of Medical Sciences, New Delhi, India
| | - Deepak Gunjan
- Department of Gastroenterology & Human Nutrition Unit, All India Institute of Medical Sciences, New Delhi, India
| | - Jaya Benjamin
- Department of Clinical Nutrition, Institute of liver & Biliary Sciences, New Delhi, India
| | - Lakshmy Ramakrishnan
- Department of Cardiac Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - R.M. Pandey
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Hem Chandra Sati
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Anoop Saraya
- Department of Gastroenterology & Human Nutrition Unit, All India Institute of Medical Sciences, New Delhi, India
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Kim HT, Lee SH, Lee JK, Chung SW. Influence of Vitamin D Deficiency on the Expression of Genes and Proteins in Patients With Medium Rotator Cuff Tears. Am J Sports Med 2023; 51:2650-2658. [PMID: 37449678 DOI: 10.1177/03635465231184392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
BACKGROUND Whether vitamin D deficiency is related to rotator cuff muscle and tendon physiology is controversial. PURPOSE To assess the relationship between vitamin D deficiency and various gene expression patterns in patients with rotator cuff tears. STUDY DESIGN Controlled laboratory study. METHODS During arthroscopic surgery, samples from the supraspinatus muscle, deltoid muscle, and supraspinatus tendon were acquired from 12 patients with vitamin D deficiency (serum 25-hydroxyvitamin D concentration <20 ng/dL) and 12 patients with sufficient vitamin D levels (control group, serum 25-hydroxyvitamin D concentration ≥30 ng/dL) who were matched for age, sex, and tear size. Alterations in the expression of genes and proteins associated with myogenesis, muscle atrophy, adipogenesis, inflammation, and apoptosis, as well as in vitamin D receptor expression, were assessed using quantitative reverse transcription polymerase chain reaction, Western blotting, and immunohistochemistry and were compared between the 2 groups. RESULTS Vitamin D receptor gene expression in the deltoid muscle was significantly lower in the vitamin D deficiency group than in the control group (P = .043). Additionally, in the deltoid muscle, myoDgene expression levels were lower and atrogin levels were higher in the vitamin D deficiency group than in the control group (P = .034 and P = .011, respectively). However, in the supraspinatus muscle, no differences were observed between groups in the expression of myogenesis- or atrophy-related genes (all P > .05). The expression of inflammation-related genes (interleukin (IL)-1β and IL-6) was significantly higher in the vitamin D deficiency group, in both the deltoid and supraspinatus muscles (all P < .05). The supraspinatus tendon tissue did not show any significant differences in any gene expression evaluated (all P > .05). A correlation between gene and protein expression was observed for atrogin and IL-1β in the deltoid muscle (P = .019 and P = .037, respectively) and for IL-6 in the supraspinatus muscle (P = .044). CONCLUSION Vitamin D deficiency was not associated with the expression of myogenesis-related or muscle atrophy-related genes in the supraspinatus muscle of patients with rotator cuff tears, unlike in the deltoid muscle; rather, vitamin D deficiency was associated with increased proinflammatory cytokine expression. CLINICAL RELEVANCE In patients with rotator cuff tears, vitamin D deficiency was observed to be associated with increased levels of proinflammatory cytokines in the rotator cuff muscles, without significant changes in gene expression related to myogenesis or muscle atrophy.
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Affiliation(s)
- Hyun Tae Kim
- Research Institute of Medical Science, Konkuk University School of medicine, Seoul, Republic of Korea
| | - Su Hyun Lee
- Research Institute of Medical Science, Konkuk University School of medicine, Seoul, Republic of Korea
| | - Jeong Kun Lee
- Research Institute of Medical Science, Konkuk University School of medicine, Seoul, Republic of Korea
| | - Seok Won Chung
- Research Institute of Medical Science, Konkuk University School of medicine, Seoul, Republic of Korea
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Varadharajan A, Sibin M, Athira S, Ghosh AK, Misra P. Correlation of CYP2R1 gene promoter methylation with circulating vitamin D levels among healthy adults. Indian J Med Res 2023; 158:197-200. [PMID: 37675692 PMCID: PMC10645036 DOI: 10.4103/ijmr.ijmr_3493_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Indexed: 09/08/2023] Open
Abstract
Background & objectives Despite being a tropical country, vitamin D deficiency is highly prevalent in India with studies indicating 40-99 per cent prevalence. Apart from calcium and phosphate metabolism, vitamin D is involved in cell cycle regulation, cardiovascular, hepatoprotection. The metabolism of vitamin D is regulated by vitamin D tool genes (CYP2R1/CYP27B1/CYP24A1/VDR). The promoter regions of some of these genes have CpG islands, making them prone to methylation induced gene silencing, which may cause a reduction in circulating vitamin D levels. Epigenetic basis of vitamin D deficiency is yet to be studied in India, and hence, this pilot study was aimed to analyze whether methylation levels of CYP2R1 gene were correlated with the levels of 25(OH)D in healthy, adult individuals in Indian population. Methods In this cross-sectional study, healthy adults of 18-45 yr of age with no history of malabsorption, thyroidectomy, chronic illness or therapeutic vitamin D supplementation were recruited. DNA methylation analysis was carried out by methylation specific quantitative PCR. Serum calcium, phosphate and vitamin D levels were also quantified. Statistical analysis was done by R 4.0.5 software. Results A total of 61 apparently healthy adults were analyzed. The serum vitamin D levels did not correlate with CYP2R1 methylation levels in our study population. Significant positive correlation was observed between age and serum vitamin D levels. Significant association of gender was found with CYP2R1 methylation levels. Interpretation & conclusions This study found no significant correlation between levels of CYP2R1 methylation and circulating 25(OH)D deficiency. Further studies on the Indian population having a larger sample size including entire vitamin D tool genes, among different ethnic groups may be conducted to elucidate molecular etiology of circulating 25(OH)D deficiency. The high prevalence of normal serum calcium and phosphate levels among vitamin D deficient subjects in this study coupled with the strikingly high prevalence of the deficiency at the national level, may suggest the need to revise the cut-off criteria for vitamin D deficiency in the Indian population.
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Affiliation(s)
- Ashvin Varadharajan
- Department of Biochemistry, Armed Forces Medical College, Pune, Maharashtra, India
| | - M.K. Sibin
- Department of Biochemistry, Armed Forces Medical College, Pune, Maharashtra, India
| | - S.V. Athira
- Department of Biochemistry, Armed Forces Medical College, Pune, Maharashtra, India
| | - Arijit Kumar Ghosh
- Department of Cardiology, Army Institute of Cardio Thoracic Sciences, Pune, Maharashtra, India
| | - Pratibha Misra
- Department of Biochemistry, Armed Forces Medical College, Pune, Maharashtra, India
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Durá-Travé T, Gallinas-Victoriano F. Pregnancy, Breastfeeding, and Vitamin D. Int J Mol Sci 2023; 24:11881. [PMID: 37569256 PMCID: PMC10418507 DOI: 10.3390/ijms241511881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 08/13/2023] Open
Abstract
Exclusive breastfeeding is considered the ideal food in the first six months of life; however, paradoxically, vitamin D content in human breast milk is clearly low and insufficient to obtain the recommended intake of 400 IU daily. This article summarizes the extraordinary metabolism of vitamin D during pregnancy and its content in human breast milk. The prevalence of hypovitaminosis D in pregnant women and/or nursing mothers and its potential maternal-fetal consequences are analyzed. The current guidelines for vitamin D supplementation in pregnant women, nursing mothers, and infants to prevent hypovitaminosis D in breastfed infants are detailed. Low vitamin D content in human breast milk is probably related to active changes in human lifestyle habits (reduced sunlight exposure).
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Affiliation(s)
- Teodoro Durá-Travé
- Department of Pediatrics, School of Medicine, University of Navarra, 31008 Pamplona, Spain
- Navarrabiomed (Biomedical Research Center), 31008 Pamplona, Spain
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Bottai V, Filoni G, Andreani L, Creati G, Di Sacco F, Bonadio AG, Giannotti S, Capanna R. Bone turnover profile and muscular status in major orthopaedic surgery: a case series. Acta Biomed 2023; 94:e2023099. [PMID: 37326278 PMCID: PMC10308471 DOI: 10.23750/abm.v94i3.13880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 02/20/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND Sarcopenia refers to a chronic loss of skeletal muscle mass, often associated with hypovitaminosis D and advanced age, which involves a greater risk of falls and fractures. The association of sarcopenia and osteoporosis defines osteo-sarcopenia. In this work, the authors analyzed the osteometabolic profile and the loco-regional muscular state of patients undergoing major orthopedic surgery, in order to define the incidence of district osteosarcopenic states, linked to a condition of disuse. METHODS 19 patients (10M-9F), between 15 and 85 years old, underwent major orthopedic surgery (15 resection prosthesis and custom made, 2 resection and reconstruction with transplant) were evaluated, of which 9 on an oncological basis. In all patients, the phospho-calcium metabolism was assessed by blood tests and intraoperative muscle biopsy was performed at the intervention site and contralaterally; in 3 cases a densitometric comparative study of the affected/contralateral limb was performed. RESULTS Results shows 5 patients with hypovitaminosis D; 7 pcs with hypocalcemia; 5 with PTH rise; 4pcs with ALP increase. In 100% of cases, the biopsy revealed sarcopenic patterns exclusively on the affected limb. 2 out of 3 DEXAs (66%) showed loco-regional osteoporosis compared to the contralateral. CONCLUSIONS The fact that in our sample sarcopenia is unilateral affecting only the pathological limb, that it is frequently associated with osteoporosis which is also unilateral and that for the most part it is not associated with vitamin D deficiency, suggests that it is an independent condition, with etiopathogenetic mechanisms different from osteosarcopenia itself. In major orthopedic surgery, bone integration and muscle status are both essential for achieving and lasting positive results. Considering the high incidence of district osteosarcopenia, an integrated surgical, pharmacological, and rehabilitative approach is desirable for the optimization of results, as well as more studies for the definition of the etiopathogenesis of this pathological condition.
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Affiliation(s)
- Vanna Bottai
- Ortopedia e Traumatologia Universitaria II - Universita' di Pisa - Azienda Ospedaliera Universitaria Pisana.
| | - Gabriele Filoni
- a:1:{s:5:"en_US";s:88:"Resident Doctor on Orthopedic and Traumatologic Clinic, University of Pisa, Pisa, Italy ";}.
| | - Lorenzo Andreani
- Ortopedia e Traumatologia Universitaria II - Universita' di Pisa - Azienda Ospedaliera Universitaria Pisana.
| | - Gabriele Creati
- Ortopedia e Traumatologia Universitaria II - Universita' di Pisa - Azienda Ospedaliera Universitaria Pisana.
| | - Federico Di Sacco
- Ortopedia e Traumatologia Universitaria II - Universita' di Pisa - Azienda Ospedaliera Universitaria Pisana.
| | | | - Stefano Giannotti
- Ortopedia e Traumatologia - Universita' degli Studi di Siena - Azienda Ospedaliera Universitaria Senese.
| | - Rodolfo Capanna
- Ortopedia e Traumatologia Universitaria II - Universita' di Pisa - Azienda Ospedaliera Universitaria Pisana.
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Hu T, Ren L, Li H, An Z. Effects of Vitamin D supplementation or deficiency on metabolic phenotypes in mice of different sexes. J Steroid Biochem Mol Biol 2023; 229:106250. [PMID: 36708934 DOI: 10.1016/j.jsbmb.2023.106250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 12/14/2022] [Accepted: 01/12/2023] [Indexed: 01/27/2023]
Abstract
Vitamin D is a steroid hormone precursor that was initially recognized for its important roles in calcium-phosphate homeostasis and bone health. However, the resent prevalence of vitamin D deficiency has highlighted its non-skeletal function, such as its important role in regulating endogenous metabolism. The aim of the present study was to examine the roles of vitamin D supplementation or deficiency on metabolic phenotypes in both male and female mice by using targeted metabolomics analysis. Six weeks old C57BL/6 mice of different sexes were fed with standard chow diet (1000 IU/kg vitamin D3 contained), vitamin D deficient diet (0 IU/kg vitamin D3 contained), or vitamin D enriched diet (10,000 IU/kg vitamin D3 contained) for a total of 14 weeks. Liver pathological analysis showed that vitamin D deficiency caused significant fat deposition in both male and female mice. While vitamin D supplementation was found to improve the accumulation of fat in the liver tissue. Metabolomics analysis indicated that metabolic perturbation related to vitamin D regulation in male mice mainly involved in tricarboxylic acid cycle, fatty acylcarnitine and fatty acid metabolism, sugar metabolism, glutathione metabolism, steroid hormone and pyrimidine metabolism. Based on the criteria of VIP> 1 in OPLS-DA analysis and P < 0.05 in hypothesis test, a total of 62 metabolites and 78 metabolites were found to be significantly changed in VD-deficiency group and VD-supplement group compared with the control group, respectively. While for female mice, the metabolites disturbance mainly involved in fatty acylcarnitine and fatty acid metabolism, TCA, sugar metabolism, folate cycle, methionine cycle, and purine metabolism. A total of 38 and 57 metabolites were found to be significantly changed (VIP>1 and P < 0.05) in VD-deficiency group and VD-supplement group compared with the control group, respectively. Energy metabolism was the most relevant metabolic pathway for vitamin D regulation in both male and female mice. Sex-specific changes of fatty acyl carnitines and dehydroepiandrosterone were observed in the vitamin D supplementation groups. However, most of the energy metabolism related compounds exhibited the same trend in vitamin D supplementation groups of different sexes. Pearson's correlation analysis indicated that vitamin D was significantly correlated (P < 0.05) with the levels of D-fructose 6-phosphate, D-glucose 1-phosphate, D-glucose 6-phosphate, DL-pyroglutamic acid, 2-oxoglutarate, L-glutamic acid, and fumarate, which were all involved in the sugar metabolism pathway. The results achieved in this study demonstrated that vitamin D significantly regulated the metabolism of lipid and sugar, and the regulation showed a certain sex specificity.
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Affiliation(s)
- Ting Hu
- Beijing Chao-Yang Hospital, Capital Medical University, No.8 Gongti South Road, Chaoyang District, Beijing, 100020, PR China.
| | - Lulu Ren
- Beijing Chao-Yang Hospital, Capital Medical University, No.8 Gongti South Road, Chaoyang District, Beijing, 100020, PR China
| | - Han Li
- Beijing Chao-Yang Hospital, Capital Medical University, No.8 Gongti South Road, Chaoyang District, Beijing, 100020, PR China
| | - Zhuoling An
- Beijing Chao-Yang Hospital, Capital Medical University, No.8 Gongti South Road, Chaoyang District, Beijing, 100020, PR China.
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Mata-Greenwood E, Westenburg HCA, Zamudio S, Illsley NP, Zhang L. Decreased Vitamin D Levels and Altered Placental Vitamin D Gene Expression at High Altitude: Role of Genetic Ancestry. Int J Mol Sci 2023; 24:3389. [PMID: 36834800 PMCID: PMC9967090 DOI: 10.3390/ijms24043389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/14/2023] [Accepted: 01/24/2023] [Indexed: 02/10/2023] Open
Abstract
High-altitude hypoxia challenges reproduction; particularly in non-native populations. Although high-altitude residence is associated with vitamin D deficiency, the homeostasis and metabolism of vitamin D in natives and migrants remain unknown. We report that high altitude (3600 m residence) negatively impacted vitamin D levels, with the high-altitude Andeans having the lowest 25-OH-D levels and the high-altitude Europeans having the lowest 1α,25-(OH)2-D levels. There was a significant interaction of genetic ancestry with altitude in the ratio of 1α,25-(OH)2-D to 25-OH-D; with the ratio being significantly lower in Europeans compared to Andeans living at high altitude. Placental gene expression accounted for as much as 50% of circulating vitamin D levels, with CYP2R1 (25-hydroxylase), CYP27B1 (1α-hydroxylase), CYP24A1 (24-hydroxylase), and LRP2 (megalin) as the major determinants of vitamin D levels. High-altitude residents had a greater correlation between circulating vitamin D levels and placental gene expression than low-altitude residents. Placental 7-dehydrocholesterol reductase and vitamin D receptor were upregulated at high altitude in both genetic-ancestry groups, while megalin and 24-hydroxylase were upregulated only in Europeans. Given that vitamin D deficiency and decreased 1α,25-(OH)2-D to 25-OH-D ratios are associated with pregnancy complications, our data support a role for high-altitude-induced vitamin D dysregulation impacting reproductive outcomes, particularly in migrants.
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Affiliation(s)
- Eugenia Mata-Greenwood
- Lawrence D. Longo Center for Perinatal Biology, School of Medicine, Loma Linda University, Loma Linda, CA 92350, USA
| | - Hans C. A. Westenburg
- Lawrence D. Longo Center for Perinatal Biology, School of Medicine, Loma Linda University, Loma Linda, CA 92350, USA
| | - Stacy Zamudio
- Placental Research Group LLC, Maplewood, NJ 07040, USA
| | | | - Lubo Zhang
- Lawrence D. Longo Center for Perinatal Biology, School of Medicine, Loma Linda University, Loma Linda, CA 92350, USA
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Rothen JP, Rutishauser J, Arnet I, Allemann SS. Renal insufficiency and magnesium deficiency correlate with a decreased formation of biologically active cholecalciferol: a retrospective observational study. Int J Clin Pharm 2023; 45:240-244. [PMID: 36334229 DOI: 10.1007/s11096-022-01485-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 09/03/2022] [Indexed: 11/08/2022]
Abstract
BACKGROUND Vitamin D is synthesized in the skin or supplied. Cholecalciferol is hydroxylated in the liver to 25(OH) vitamin D [25D]. 25D is further hydroxylated in the kidney to 1,25(OH) vitamin D [1,25D]. Catabolism occurs by further hydroxylation. Magnesium is a cofactor of all involved hydroxylases. AIM To investigate the association between renal function and serum magnesium levels, and the biologically active hormone 1,25D. METHOD Anonymised serum values of 25D, 1,25D, magnesium and creatinine measured in an outpatient cohort over 2 years were analysed. RESULTS Renal function and magnesium level did not influence 25D values (r = - 0.144 and 0.030, respectively). Mean serum 1,25D values decreased from 106.5 ± 44.3 pmol/l in individuals with normal renal function to 51.7 ± 18.9 pmol/l in those with severe renal insufficiency (p < 0.01). A weak positive correlation was observed between 1,25D and eGFR (r = 0.317), and between 1,25D and serum magnesium (r = 0.217). CONCLUSION Impaired renal function and low magnesium serum levels are slightly associated with low 1,25D concentrations. Measuring 25D, but not 1,25D, may overestimate the patient's vitamin D status. In patients with renal insufficiency adequate magnesium supply should be ensured.
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Affiliation(s)
- Jean-Pierre Rothen
- Pharmaceutical Care Research Group, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, CH-4056, Basel, Switzerland.
| | - Jonas Rutishauser
- Clinical Trial Unit, Kantonsspital Baden, Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Isabelle Arnet
- Pharmaceutical Care Research Group, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, CH-4056, Basel, Switzerland
| | - Samuel S Allemann
- Pharmaceutical Care Research Group, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, CH-4056, Basel, Switzerland
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Wu Y, Zeng Y, Zhang Q, Xiao X. The Role of Maternal Vitamin D Deficiency in Offspring Obesity: A Narrative Review. Nutrients 2023; 15:nu15030533. [PMID: 36771240 PMCID: PMC9919568 DOI: 10.3390/nu15030533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/11/2023] [Accepted: 01/17/2023] [Indexed: 01/20/2023] Open
Abstract
Currently, vitamin D (VD) deficiency during pregnancy is widespread globally, causing unfavorable pregnancy outcomes for both mothers and infants for a longer time than expected, based on the Developmental Origins of Health and Disease (DOHaD) theory. As VD plays a key role in maintaining normal glucose and lipid metabolism, maternal VD deficiency may lead to obesity and other obesity-related diseases among offspring later in life. This review mainly focuses on the effect of maternal VD deficiency on offspring lipid metabolism, reviewing previous clinical and animal studies to determine the effects of maternal VD deficit on offspring obesity and potential mechanisms involved in the progression of offspring obesity. Emerging clinical evidence shows that a low VD level may lead to abnormal growth (either growth restriction or largeness for gestational age) and lipid and glucose metabolism disorders in offspring. Here, we also outline the link between maternal VD deficiency and life-long offspring effects, including the disorder of adipogenesis, the secretion of adipocytokines (including leptin, resistin, and adiponectin), activated systemic inflammation, increased oxidative reactions in adipose tissue, insulin resistance, and abnormal intestinal gut microbiota. Thus, there is an urgent need to take active steps to address maternal VD deficiency to relieve the global burden of obesity.
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Affiliation(s)
- Yifan Wu
- Key Laboratory of Endocrinology, Ministry of Health, Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Yuan Zeng
- Key Laboratory of Endocrinology, Ministry of Health, Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Qian Zhang
- Key Laboratory of Endocrinology, Ministry of Health, Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
- Correspondence: (Q.Z.); (X.X.); Tel./Fax: +86-10-69155073 (Q.Z. & X.X.)
| | - Xinhua Xiao
- Key Laboratory of Endocrinology, Ministry of Health, Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
- State Key Laboratory of Complex Severe and Rare Diseases, The Translational Medicine Center of Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
- Correspondence: (Q.Z.); (X.X.); Tel./Fax: +86-10-69155073 (Q.Z. & X.X.)
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20
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Yoshida N, Oi Y, Kitaura Y, Shimomura Y. Activation of Hepatic Branched-Chain α-Ketoacid Dehydrogenase Complex by Vitamin D Deficiency in Rats. J Nutr Sci Vitaminol (Tokyo) 2023; 69:490-492. [PMID: 38171823 DOI: 10.3177/jnsv.69.490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Branched-chain α-ketoacid dehydrogenase (BCKDH) complex is a rate-limiting enzyme in branched-chain amino acid catabolism and is subject to inactivation via phosphorylation by BCKDH kinase (BDK). In the present study, we examined the effects of vitamin D-deficiency on hepatic BCKDH and BDK activities in rats. Rats fed a vitamin D-deficient diet long-term showed a slight but significant decrease in plasma Ca concentration, which was associated with an elevation of BCKDH activity and a decrease in BDK activity. These results suggest that vitamin D deficiency promotes BCAA catabolism via BCKDH activation, which resulted from BDK suppression. It is proposed that Ca2+-dependent BDK inhibition by thiamine pyrophosphate may be involved in the BDK suppression.
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Affiliation(s)
- Natsuko Yoshida
- Department of Food and Nutritional Sciences, College of Bioscience and Biotechnology, Chubu University
| | - Yuna Oi
- Department of Food and Nutritional Sciences, College of Bioscience and Biotechnology, Chubu University
| | - Yasuyuki Kitaura
- Laboratory of Nutritional Biochemistry, Graduate School of Bioagricultural Sciences, Nagoya University
| | - Yoshiharu Shimomura
- Department of Food and Nutritional Sciences, College of Bioscience and Biotechnology, Chubu University
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21
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Mirza I, Mohamed A, Deen H, Balaji S, Elsabbahi D, Munasser A, Naquiallah D, Abdulbaseer U, Hassan C, Masrur M, Bianco FM, Ali MM, Mahmoud AM. Obesity-Associated Vitamin D Deficiency Correlates with Adipose Tissue DNA Hypomethylation, Inflammation, and Vascular Dysfunction. Int J Mol Sci 2022; 23:ijms232214377. [PMID: 36430854 PMCID: PMC9694734 DOI: 10.3390/ijms232214377] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/14/2022] [Accepted: 11/17/2022] [Indexed: 11/22/2022] Open
Abstract
Vitamin D (VD) deficiency is a hallmark of obesity and vascular dysfunction. We sought to test the hypothesis that VD deficiency may contribute to obesity-related vascular dysfunction by inducing adipokine hypomethylation and augmented expression. To this end, we collected blood and adipose tissues (ATs) from a cohort of 77 obese participants who were classified as having mild, moderate, or severe VD deficiency. The body composition, vascular reactivity, cardiometabolic profiles, and DNA methylation of 94 inflammation-related adipokines were measured. Our results show that higher degrees of VD deficiency were associated with lower DNA methylation and induced the expression of inflammatory adipokines such as B-cell lymphoma 6 (BCL6), C-X-C Motif Chemokine Ligand 8 (CXCL8), histone deacetylase 5 (HDAC5), interleukin 12A (IL12A), and nuclear factor κB (NFκB) in the ATs. They were also associated with higher BMI and total and visceral fat mass, impaired insulin sensitivity and lipid profiles, AT hypoxia, and higher concentrations of circulating inflammatory markers. Moderate and severe VD deficiency correlated with impaired vasoreactivity of the brachial artery and AT-isolated arterioles, reduced nitric oxide generation, and increased arterial stiffness. In a multivariate regression analysis, the VD deficiency level strongly predicted the adipokine methylation score, systemic inflammation, and microvascular dysfunction. In conclusion, our findings suggest that VD deficiency is a possible contributor to obesity-related adipokine hypomethylation, inflammation, and vascular dysfunction.
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Affiliation(s)
- Imaduddin Mirza
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Ariej Mohamed
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Hania Deen
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Swetha Balaji
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Duaa Elsabbahi
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Amier Munasser
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Dina Naquiallah
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Uzma Abdulbaseer
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Chandra Hassan
- Department of Surgery, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Mario Masrur
- Department of Surgery, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Francesco M. Bianco
- Department of Surgery, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Mohamed M. Ali
- Department of Physical Therapy, College of Applied Health Sciences, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Abeer M. Mahmoud
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
- Department of Kinesiology and Nutrition, College of Applied Health Sciences, The University of Illinois at Chicago, Chicago, IL 60612, USA
- Correspondence:
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22
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Grzesiak M, Tchurzyk M, Socha M, Sechman A, Hrabia A. An Overview of the Current Known and Unknown Roles of Vitamin D 3 in the Female Reproductive System: Lessons from Farm Animals, Birds, and Fish. Int J Mol Sci 2022; 23:ijms232214137. [PMID: 36430615 PMCID: PMC9693557 DOI: 10.3390/ijms232214137] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/09/2022] [Accepted: 11/10/2022] [Indexed: 11/18/2022] Open
Abstract
Recent studies have clearly shown that vitamin D3 is a crucial regulator of the female reproductive process in humans and animals. Knowledge of the expression of vitamin D3 receptors and related molecules in the female reproductive organs such as ovaries, uterus, oviduct, or placenta under physiological and pathological conditions highlights its contribution to the proper function of the reproductive system in females. Furthermore, vitamin D3 deficiency leads to serious reproductive disturbances and pathologies including ovarian cysts. Although the influence of vitamin D3 on the reproductive processes of humans and rodents has been extensively described, the association between vitamin D3 and female reproductive function in farm animals, birds, and fish has rarely been summarized. In this review, we provide an overview of the role of vitamin D3 in the reproductive system of those animals, with special attention paid to the expression of vitamin D3 receptors and its metabolic molecules. This updated information could be essential for better understanding animal physiology and overcoming the incidence of infertility, which is crucial for optimizing reproductive outcomes in female livestock.
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Affiliation(s)
- Malgorzata Grzesiak
- Department of Endocrinology, Institute of Zoology and Biomedical Research, Jagiellonian University in Krakow, Gronostajowa 9, 30-387 Krakow, Poland
- Correspondence: ; Tel.: +48-12-664-5025
| | - Marcelina Tchurzyk
- Department of Endocrinology, Institute of Zoology and Biomedical Research, Jagiellonian University in Krakow, Gronostajowa 9, 30-387 Krakow, Poland
| | - Magdalena Socha
- Department of Animal Physiology and Endocrinology, University of Agriculture in Krakow, al. Mickiewicza 21, 31-120 Krakow, Poland
| | - Andrzej Sechman
- Department of Animal Physiology and Endocrinology, University of Agriculture in Krakow, al. Mickiewicza 21, 31-120 Krakow, Poland
| | - Anna Hrabia
- Department of Animal Physiology and Endocrinology, University of Agriculture in Krakow, al. Mickiewicza 21, 31-120 Krakow, Poland
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Grzeczka A, Graczyk S, Skowronska A, Skowronski MT, Kordowitzki P. Relevance of Vitamin D and Its Deficiency for the Ovarian Follicle and the Oocyte: An Update. Nutrients 2022; 14:nu14183712. [PMID: 36145088 PMCID: PMC9502977 DOI: 10.3390/nu14183712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/30/2022] [Accepted: 09/07/2022] [Indexed: 11/25/2022] Open
Abstract
For many years, vitamin D (VD) has been known to be an essential micronutrient with important relevance not only for the skeletal system, but also for numerous other mammalian organ systems. Low levels of VD result in a VD deficiency, which is a global health problem. Moreover, VD deficiencies are linked to several pathologies, for instance, diseases of the cardiovascular system, diabetes mellitus, or sub- and infertility. In the past two decades, an increasing body of evidence has shown that adequate physiological levels of VD are crucial for the female gamete and its microenvironment, and VD deficiency has been associated with decreased live birth rates among women undergoing in vitro fertilization (IVF). With regard to the female reproductive tract, VD receptors (VDRs) have been detected in the ovary, endometrium, and the placenta. Although it has been reported that VD seems to be relevant for both calcium-dependent and independent pathways, its relevance for the oocyte’s developmental competence and life span remains elusive. Therefore, herein, we aim to provide an update on the importance of VD and VD deficiency for the oocyte and the follicular microenvironment.
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Affiliation(s)
- Arkadiusz Grzeczka
- Department of Preclinical and Basic Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Gagarina Street 1, 87-100 Torun, Poland
| | - Szymon Graczyk
- Department of Preclinical and Basic Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Gagarina Street 1, 87-100 Torun, Poland
| | - Agnieszka Skowronska
- Department of Human Physiology and Pathophysiology, School of Medicine, Collegium Medicum of the University of Warmia and Mazury, 10-082 Olsztyn, Poland
| | - Mariusz T. Skowronski
- Department of Preclinical and Basic Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Gagarina Street 1, 87-100 Torun, Poland
| | - Paweł Kordowitzki
- Department of Preclinical and Basic Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Gagarina Street 1, 87-100 Torun, Poland
- Correspondence:
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Elkhwanky MS, Kummu O, Hakkola J. Streptozotocin-induced Diabetes Represses Hepatic CYP2R1 Expression but Induces Vitamin D 25-Hydroxylation in Male Mice. Endocrinology 2022; 163:6582260. [PMID: 35524739 PMCID: PMC9155637 DOI: 10.1210/endocr/bqac060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Indexed: 11/19/2022]
Abstract
Vitamin D deficiency [ie, low plasma 25-hydroxyvitamin D (25-OH-D)] associates with the prevalence of metabolic diseases including type 1 diabetes; however, the molecular mechanisms are incompletely understood. Recent studies have indicated that both fasting and metabolic diseases suppress the cytochrome P450 (CYP) 2R1, the major hepatic vitamin D 25-hydroxylase. We specifically studied the effect of a mouse model of type 1 diabetes on the regulation of Cyp2r1 and vitamin D status. We show that streptozotocin-induced diabetes in mice suppresses the expression of the Cyp2r1 in the liver. While insulin therapy normalized the blood glucose levels in the diabetic mice, it did not rescue the diabetes-induced suppression of Cyp2r1. Similar regulation of Cyp2r1 was observed also in the kidney. Plasma 25-OH-D level was not decreased and was, in contrast, higher after 4 and 8 weeks of diabetes. Furthermore, the vitamin D 25-hydroxylase activity was increased in the livers of the diabetic mice, suggesting compensation of the Cyp2r1 repression by other vitamin D 25-hydroxylase enzymes. Cyp27b1, the vitamin D 1α-hydroxylase, expression in the kidney and the plasma 1α,25-dihydroxyvitamin D level were higher after 4 weeks of diabetes, while both were normalized after 13 weeks. In summary, these results indicate that in the mouse model of type 1 diabetes suppression of hepatic Cyp2r1 expression does not result in reduced hepatic vitamin D 25-hydroxylase activity and vitamin D deficiency. This may be due to induction of other vitamin D 25-hydroxylase enzymes in response to diabetes.
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Affiliation(s)
- Mahmoud-Sobhy Elkhwanky
- Research Unit of Biomedicine, Pharmacology and Toxicology, University of Oulu, Oulu, Finland
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Outi Kummu
- Research Unit of Biomedicine, Pharmacology and Toxicology, University of Oulu, Oulu, Finland
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Jukka Hakkola
- Correspondence: Jukka Hakkola, MD, PhD, Research Unit of Biomedicine, Pharmacology and Toxicology, University of Oulu, POB 5000, FI-90014 University of Oulu, Finland.
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25
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Sirajudeen S, Shah I, Ayoub MA, Karam SM, Al Menhali A. Long-Term Vitamin D Deficiency Results in the Inhibition of Cell Proliferation and Alteration of Multiple Gastric Epithelial Cell Lineages in Mice. Int J Mol Sci 2022; 23:ijms23126684. [PMID: 35743124 PMCID: PMC9224370 DOI: 10.3390/ijms23126684] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 06/11/2022] [Accepted: 06/13/2022] [Indexed: 11/22/2022] Open
Abstract
Over one billion people globally are vitamin D (VD) deficient. Studies on the biological roles of VD are numerous but very little on the stomach. This project aims to understand how gastric homeostasis is affected by VD deficiency caused by prolonged exposure to darkness alone or combined with VD deficient diet. Three groups of C57/BL6 mice were subjected to different light exposure conditions and diets for 12 months (n = 8−12/group): control—12 h/12 h light/dark SDL (Standard Diet/Light), 24 h dark SDD (Standard Diet/Dark), and 24 h dark VDD (VD deficient diet/Dark). Stomach samples were collected for different multi-label lectin-/immuno-histochemical and qRT-PCR analyses, and the serum for LC-MS-MS. We found that the membrane VD receptor is expressed widely in the stomach when compared to nuclear VD receptors. Compared to SDL, VDD mice developed mucous cell expansion with increased mucins-mRNA (3.27 ± 2.73 (p < 0.05)) increased apoptotic cells, 15 ± 7 (p ≤ 0.001)); decreased cell proliferation, 4 ± 4 (p < 0.05)) and decreased acid secretion 33 ± 2 μEq/kg (p ≤ 0.0001)). Interestingly, mice exposed to full darkness developed mild VD deficiency with higher VD epimer levels: 11.9 ± 2.08 ng/mL (p ≤ 0.0001)), expansion in zymogenic cell number (16 ± 3 (p ≤ 0.01)), and a reduction in acid secretion (18 ± 2 μEq/kg (p ≤ 0.0001)). In conclusion, changes in light exposure or VD levels have serious physiological effects on the gastric mucosa, which should be considered during the management of gastric disorders.
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Affiliation(s)
- Shaima Sirajudeen
- Department of Biology, College of Science, United Arab Emirates University (UAEU), Al Ain P.O. Box 15551, United Arab Emirates; (S.S.); (M.A.A.)
- Zayed Centre for Scientific Research, United Arab Emirates University (UAEU), Al Ain P.O. Box 15551, United Arab Emirates; (I.S.); (S.M.K.)
| | - Iltaf Shah
- Zayed Centre for Scientific Research, United Arab Emirates University (UAEU), Al Ain P.O. Box 15551, United Arab Emirates; (I.S.); (S.M.K.)
- Department of Chemistry, College of Science, United Arab Emirates University (UAEU), Al Ain P.O. Box 15551, United Arab Emirates
| | - Mohammed Akli Ayoub
- Department of Biology, College of Science, United Arab Emirates University (UAEU), Al Ain P.O. Box 15551, United Arab Emirates; (S.S.); (M.A.A.)
| | - Sherif M. Karam
- Zayed Centre for Scientific Research, United Arab Emirates University (UAEU), Al Ain P.O. Box 15551, United Arab Emirates; (I.S.); (S.M.K.)
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University (UAEU), Al Ain P.O. Box 15551, United Arab Emirates
| | - Asma Al Menhali
- Department of Biology, College of Science, United Arab Emirates University (UAEU), Al Ain P.O. Box 15551, United Arab Emirates; (S.S.); (M.A.A.)
- Zayed Centre for Scientific Research, United Arab Emirates University (UAEU), Al Ain P.O. Box 15551, United Arab Emirates; (I.S.); (S.M.K.)
- Correspondence:
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Lan T, Shen Z, Hu Z, Yan B. Vitamin D/VDR in the pathogenesis of intervertebral disc degeneration: Does autophagy play a role? Biomed Pharmacother 2022; 148:112739. [PMID: 35202910 DOI: 10.1016/j.biopha.2022.112739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/17/2022] [Accepted: 02/17/2022] [Indexed: 11/19/2022] Open
Abstract
To date, the underlying mechanisms involved intervertebral disc degeneration (IDD) remain unclear, which has hindered the development of molecular biological therapy for IDD. Autophagy is vital for intracellular quality control and metabolic balance in intervertebral disc cells. Hence, autophagy homeostasis is important. Emerging evidence has implicated vitamin D (VD) and the vitamin D receptor (VDR) in IDD progression because of their effects on different autophagy steps. However, the results of clinical trials in which VD supplementation was assessed as a treatment for IDD are controversial. Furthermore, experimental studies on the interplay between VD/VDR and autophagy are still in their infancy. In view of the significance of the crosstalk between VD/VDR and autophagy components, this review focuses on the latest research on VD/VDR modulation in autophagy and investigates the possible regulatory mechanisms. This article will deepen our understanding of the relationship between VD/VDR and autophagy and suggests novel strategies for IDD prevention and treatment.
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Affiliation(s)
- Tao Lan
- Department of Spinal Surgery, Shenzhen Second People's Hospital, the First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, 518035, China.
| | - Zhe Shen
- Department of Spinal Surgery, Shenzhen Second People's Hospital, the First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, 518035, China
| | - Zhihao Hu
- Department of Spinal Surgery, Shenzhen Second People's Hospital, the First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, 518035, China
| | - Bin Yan
- Department of Spinal Surgery, Shenzhen Second People's Hospital, the First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, 518035, China.
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Szymczak-Pajor I, Miazek K, Selmi A, Balcerczyk A, Śliwińska A. The Action of Vitamin D in Adipose Tissue: Is There the Link between Vitamin D Deficiency and Adipose Tissue-Related Metabolic Disorders? Int J Mol Sci 2022; 23:956. [PMID: 35055140 PMCID: PMC8779075 DOI: 10.3390/ijms23020956] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/09/2022] [Accepted: 01/10/2022] [Indexed: 12/11/2022] Open
Abstract
Adipose tissue plays an important role in systemic metabolism via the secretion of adipocytokines and storing and releasing energy. In obesity, adipose tissue becomes dysfunctional and characterized by hypertrophied adipocytes, increased inflammation, hypoxia, and decreased angiogenesis. Although adipose tissue is one of the major stores of vitamin D, its deficiency is detective in obese subjects. In the presented review, we show how vitamin D regulates numerous processes in adipose tissue and how their dysregulation leads to metabolic disorders. The molecular response to vitamin D in adipose tissue affects not only energy metabolism and adipokine and anti-inflammatory cytokine production via the regulation of gene expression but also genes participating in antioxidant defense, adipocytes differentiation, and apoptosis. Thus, its deficiency disturbs adipocytokines secretion, metabolism, lipid storage, adipogenesis, thermogenesis, the regulation of inflammation, and oxidative stress balance. Restoring the proper functionality of adipose tissue in overweight or obese subjects is of particular importance in order to reduce the risk of developing obesity-related complications, such as cardiovascular diseases and diabetes. Taking into account the results of experimental studies, it seemed that vitamin D may be a remedy for adipose tissue dysfunction, but the results of the clinical trials are not consistent, as some of them show improvement and others no effect of this vitamin on metabolic and insulin resistance parameters. Therefore, further studies are required to evaluate the beneficial effects of vitamin D, especially in overweight and obese subjects, due to the presence of a volumetric dilution of this vitamin among them.
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Affiliation(s)
- Izabela Szymczak-Pajor
- Department of Nucleic Acid Biochemistry, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland;
| | - Krystian Miazek
- Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, 15 Wroblewskiego, 93-590 Lodz, Poland;
| | - Anna Selmi
- Department of Molecular Biophysics, University of Lodz, 141/143 Pomorska, 90-236 Lodz, Poland; (A.S.); (A.B.)
| | - Aneta Balcerczyk
- Department of Molecular Biophysics, University of Lodz, 141/143 Pomorska, 90-236 Lodz, Poland; (A.S.); (A.B.)
| | - Agnieszka Śliwińska
- Department of Nucleic Acid Biochemistry, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland;
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He LP, Song YX, Zhu T, Gu W, Liu CW. Progress in the Relationship between Vitamin D Deficiency and the Incidence of Type 1 Diabetes Mellitus in Children. J Diabetes Res 2022; 2022:5953562. [PMID: 36090587 PMCID: PMC9463035 DOI: 10.1155/2022/5953562] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/03/2022] [Accepted: 08/12/2022] [Indexed: 11/24/2022] Open
Abstract
Type 1 diabetes mellitus (T1DM) is an autoimmune disease, due to a large number of islet β cells damaged, resulting in an absolute lack of insulin, ultimately relying on insulin therapy. Vitamin D is a fat-soluble sterol derivative that not only participates in calcium and phosphorus metabolism but also acts as an immunomodulatory role by binding to nuclear vitamin D receptors to regulate the expression of transcription factors. Increasing evidence has shown that vitamin D has immunoregulation and anti-inflammatory effects, and it may play a role in T cell regulatory responses due to downregulation in the expression of cathepsin G and inhibition of CD4+ T cell activation and protection of β cells from immune attack and is beneficial in decreasing oxidative stress in T1DM patients. Epidemiologic evidence demonstrates involvement of vitamin D deficiency in T1DM pathogenesis, with the immune system improperly targeting and destroying its own islet β cells. In addition, polymorphisms in genes critical for vitamin D metabolism may increase the risk of islet autoimmunity and T1DM. In this paper, the relationship between vitamin D deficiency and the molecular mechanism of T1DM was discussed.
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Affiliation(s)
- Lian-Ping He
- School of Medicine, Taizhou University, Jiaojiang, 318000 Zhejiang, China
| | - Yu-Xin Song
- School of Medicine, Taizhou University, Jiaojiang, 318000 Zhejiang, China
| | - Ting Zhu
- Children's Hospital of Nanjing Medical University, Nanjing, 210008 Jiangsu, China
| | - Wei Gu
- Children's Hospital of Nanjing Medical University, Nanjing, 210008 Jiangsu, China
| | - Chang-Wei Liu
- Children's Hospital of Nanjing Medical University, Nanjing, 210008 Jiangsu, China
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Rasouli N, Brodsky IG, Chatterjee R, Kim SH, Pratley RE, Staten MA, Pittas AG. Effects of Vitamin D Supplementation on Insulin Sensitivity and Secretion in Prediabetes. J Clin Endocrinol Metab 2022; 107:230-240. [PMID: 34473295 PMCID: PMC8684490 DOI: 10.1210/clinem/dgab649] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Indexed: 12/12/2022]
Abstract
CONTEXT Vitamin D regulates glucose homeostasis pathways, but effects of vitamin D supplementation on β-cell function remain unclear. OBJECTIVE To investigate the effects of vitamin D3 supplementation on insulin sensitivity and β-cell function. METHODS This is a prespecified secondary analysis of the Vitamin D and Type 2 Diabetes study. Overweight/obese adults at high risk for type 2 diabetes (prediabetes) were randomly treated with vitamin D3 4000 IU or matching placebo daily for 24 months. MAIN OUTCOME Disposition index (DI), as an estimate of β-cell function, was calculated as the product of Homeostasis Model Assessment 2 indices derived from C-peptide values (HOMA2%Scpep) and C-peptide response during the first 30 minutes of a 75-g oral glucose tolerance test (OGTT). RESULTS Mean age was 60.5 ± 9.8 years and body mass index was 31.9 ± 4.4 kg/m2. Mean serum 25(OH)D level increased from 27.9 ± 10.3 ng/mL at baseline to 54.9 ng/mL at 2 years in the vitamin D group and was unchanged (28.5 ± 10.0 ng/mL) in the placebo group. The baseline DI predicted incident diabetes independent of the intervention. In the entire cohort, there were no significant differences in changes in DI, HOMA2%Scpep, or C-peptide response between the 2 groups. Among participants with baseline 25(OH)D level <12 ng/mL, the mean percent differences for DI between the vitamin D and placebo groups was 8.5 (95% CI, 0.2-16.8). CONCLUSIONS Supplementation with vitamin D3 for 24 months did not improve an OGTT-derived index of β-cell function in people with prediabetes not selected based on baseline vitamin D status; however, there was benefit among those with very low baseline vitamin D status.
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Affiliation(s)
- Neda Rasouli
- Division of Endocrinology, Metabolism and Diabetes, University of Colorado School of Medicine and VA Eastern Colorado Health Care System, Aurora, CO 80045, USA
- Correspondence: Neda Rasouli, MD, 800 Washington Street, Box 268, Boston, MA 02111, USA.
| | - Irwin G Brodsky
- Endocrinology and Diabetes Center, Maine Medical Center and Maine Medical Center Research Institute, Scarborough, ME 04101, USA
| | | | - Sun H Kim
- Division of Endocrinology, Gerontology and Metabolism, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Richard E Pratley
- AdventHealth Translational Research Institute, Orlando, FL 32804, USA
| | - Myrlene A Staten
- National Institute of Diabetes and Digestive, and Kidney Diseases, Bethesda, MD 20892 (retired), USA
| | - Anastassios G Pittas
- Division of Endocrinology, Diabetes and Metabolism, Tufts Medical Center, Boston, MA 02111, USA
| | - D2d Research Group
PittasAnastassios GMD, MS8BrodskyIrwinMD9CegliaLisaMD, MS10ChadhaChhaviMD11ChatterjeeRaneeMD, MPH12Dawson-HughesBessMD13DesouzaCyrusMBBS14DolorRowenaMD, MHS12ForeytJohnPhD16GhaziAdlineMD17HsiaDaniel SMD18JohnsonKaren CMD, MPH19KashyapSangeeta RMD20KimSun HMD21LeBlancErin SMD, MPH22LewisMichael RMD, MBA23LiaoEmiliaMD24MalozowskiSaulMD, PhD25NeffLisa MMD26O’NeilPatrickPhD27ParkJeanMD28PetersAnneMD29PhillipsLawrence SMD3031PratleyRichardMD32RaskinPhilipMD33RasouliNedaMD34RobbinsDavidMD35RosenCliffordMD9ReboussinDavePhD37ArodaVanita RMD38WareJames HPhD39SheehanPatriciaRN, MPH, MS40StatenMyrlene AMD25KnowlerWilliam CMD, DrPH42
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Holt R, Petersen JH, Dinsdale E, Knop FK, Juul A, Jørgensen N, Blomberg Jensen M. Vitamin D Supplementation Improves Fasting Insulin Levels and HDL Cholesterol in Infertile Men. J Clin Endocrinol Metab 2022; 107:98-108. [PMID: 34508607 DOI: 10.1210/clinem/dgab667] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT Vitamin D has been linked with glucose and lipid metabolism. Men with impaired gonadal function have a higher risk of metabolic syndrome and mortality, and vitamin D status may be a reversible modulator. OBJECTIVE This work aimed to determine the effect of daily vitamin D and calcium supplementation for 150 days on glucose and lipid homeostasis in infertile men. METHODS A single-center, double-blinded, randomized clinical trial (NCT01304927) was conducted. A total of 307 infertile men were randomly assigned (1:1) to a single dose of 300 000 IU cholecalciferol followed by 1400 IU cholecalciferol + 500 mg of calcium daily (n = 151) or placebo (n = 156) for 150 days. Reported metabolic parameters including fasting plasma glucose, glycated hemoglobin A1c, fasting serum insulin, homeostatic model assessment of insulin resistance (HOMA-IR), fasting plasma cholesterols, and triglycerides were secondary end points. The primary end point semen quality has previously been reported. RESULTS Men receiving vitamin D supplementation improved their vitamin D status, whereas vitamin D status was aggravated in the placebo group characterized by higher serum parathyroid hormone. At the end of the trial, men receiving vitamin D supplementation had 13% lower fasting serum insulin concentrations compared with the placebo-treated group (65 vs 74 pmol/L, P = .018) and 19% lower HOMA-IR (2.2 vs 2.7, P = .025). Moreover, men in the vitamin D group had higher high-density lipoprotein (HDL) cholesterol levels (1.38 vs 1.32 mmol/L, P = .008) compared with the placebo group. CONCLUSION High-dose vitamin D supplementation has beneficial effects on glucose homeostasis and HDL cholesterol levels in infertile men.
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Affiliation(s)
- Rune Holt
- Group of Skeletal, Mineral and Gonadal Endocrinology, Department of Growth and Reproduction, Rigshospitalet, Copenhagen, 2100, Denmark
| | - Jørgen Holm Petersen
- Department of Growth and Reproduction and International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, 2100, Denmark
- Section of Biostatistics, Faculty of Health Sciences, University of Copenhagen, 1014, Denmark
| | - Elsa Dinsdale
- Group of Skeletal, Mineral and Gonadal Endocrinology, Department of Growth and Reproduction, Rigshospitalet, Copenhagen, 2100, Denmark
| | - Filip Krag Knop
- Center for Clinical Metabolic Research, Gentofte Hospital, University of Copenhagen, Hellerup, 2900, Denmark
- Steno Diabetes Center Copenhagen, Gentofte, 2820, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, 2200, Denmark
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Anders Juul
- Department of Growth and Reproduction and International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, 2100, Denmark
| | - Niels Jørgensen
- Department of Growth and Reproduction and International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, 2100, Denmark
| | - Martin Blomberg Jensen
- Group of Skeletal, Mineral and Gonadal Endocrinology, Department of Growth and Reproduction, Rigshospitalet, Copenhagen, 2100, Denmark
- Division of Bone and Mineral Research, Harvard School of Dental Medicine/Harvard Medical School, Harvard University, Boston, Massachusetts 02115, USA
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Nema J, Randhir K, Wadhwani N, Sundrani D, Joshi S. Maternal vitamin D deficiency reduces docosahexaenoic acid, placental growth factor and peroxisome proliferator activated receptor gamma levels in the pup brain in a rat model of preeclampsia. Prostaglandins Leukot Essent Fatty Acids 2021; 175:102364. [PMID: 34768025 DOI: 10.1016/j.plefa.2021.102364] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 10/01/2021] [Accepted: 10/27/2021] [Indexed: 12/26/2022]
Abstract
BACKGROUND Preeclampsia is a pregnancy disorder characterized with abnormal placental angiogenesis. Vitamin D and long chain polyunsaturated fatty acids (LCPUFA) play a crucial role in pregnancy and are required for normal placental and fetal growth and development. This study reports the effect of maternal vitamin D on LCPUFA levels in the mother and offspring brain fatty acid levels and angiogenic markers in a rat model of preeclampsia. METHODS Female rats were divided into four groups from pre-pregnancy to pregnancy, viz Control; Preeclampsia (PE); Vitamin D deficient with PE (VDD-PE) and Vitamin D supplemented with PE (VDS-PE). Preeclampsia was induced by administering l-nitroarginine methyl ester (L-NAME) at the dose of 50 mg/kg body weight/day from day 14 to day 19 of gestation. Dams were sacrificed at d20 of gestation to collect dam blood, placenta and pup brain. LCPUFA levels from dam plasma, erythrocytes and placenta and its transcription factor peroxisome proliferator activated receptor gamma (PPAR-g) from placenta were estimated. Pup brain LCPUFA levels, angiogenic factors vascular endothelial growth factor (VEGF) and placental growth factor (PlGF) and transcription factor hypoxia inducible factor (Hif-1α) and PPAR-g were also estimated. RESULTS Maternal vitamin D status influences fatty acid levels. Placental PPAR-g levels were lower in the VDD-PE group as compared to the VDS-PE groups (p < 0.01). In the offspring brain, both PE and VDD-PE group showed lower levels of DHA (p < 0.05 for both) while saturated fatty acids (SFA) levels in the VDD-PE group were higher as compared to the control group (p < 0.05). VDD-PE group also showed lower levels of PlGF and PPAR-g (p < 0.01 and p < 0.05, respectively) in the pup brain while vitamin D supplementation demonstrated levels similar to control. CONCLUSION This study for the first time demonstrates that maternal vitamin D status influences LCPUFA metabolism and angiogenesis in the offspring brain.
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Affiliation(s)
- Juhi Nema
- Mother and Child Health, Interactive Research School for Health Affairs (IRSHA), Bharati Vidyapeeth (Deemed to be University), Pune, India
| | - Karuna Randhir
- Mother and Child Health, Interactive Research School for Health Affairs (IRSHA), Bharati Vidyapeeth (Deemed to be University), Pune, India
| | - Nisha Wadhwani
- Mother and Child Health, Interactive Research School for Health Affairs (IRSHA), Bharati Vidyapeeth (Deemed to be University), Pune, India
| | - Deepali Sundrani
- Mother and Child Health, Interactive Research School for Health Affairs (IRSHA), Bharati Vidyapeeth (Deemed to be University), Pune, India
| | - Sadhana Joshi
- Mother and Child Health, Interactive Research School for Health Affairs (IRSHA), Bharati Vidyapeeth (Deemed to be University), Pune, India.
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Li S, Qi J, Sun Y, Gao X, Ma J, Zhao S. An integrated RNA-Seq and network study reveals that valproate inhibited progesterone production in human granulosa cells. J Steroid Biochem Mol Biol 2021; 214:105991. [PMID: 34487832 DOI: 10.1016/j.jsbmb.2021.105991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/10/2021] [Accepted: 08/29/2021] [Indexed: 11/23/2022]
Abstract
BACKGROUND Valproate (VPA) is an antiepileptic drug (AEDs) with an ideal effect against epilepsy as well as other neuropsychiatric diseases. There is considerable evidence that women taking VPA are prone to reproductive endocrine disorders. However, few studies have been published about VPA effects on human ovarian granulosa cells. METHODS By treating human ovarian granulosa cell line KGN with VPA, the cell viability and progesterone production function were evaluated. RNA-sequencing was applied to uncover the global gene expression upon VPA treatment. RESULTS We revealed that VPA dose-dependently repressed the viability of KGN. VPA treatment at 600 μM inhibited the progesterone production. The mRNA and protein expression of CYP11A1 and STAR, two key enzymes in the biosynthesis of progesterone, were both suppressed. Gene set enrichment analysis and Kyoto Encyclopedia of Genes and Genomes pathway analysis of the transcriptome revealed classical functions of VPA as a neuromodulator and regulator of histone acetylation modifications. In addition to this, VPA commonly affected many steroid metabolism related genes in follicle cells, such as promoting the expression of vitamin D receptor (VDR). CONCLUSION Our findings suggest that VPA caused steroids metabolism pathways disturbance related with ovarian function and inhibited progesterone biosynthesis by inhibiting the expression of steroidogenesis genes. Our research may provide theoretical basis for the better use of VPA and the possible ways to counteract its side effects.
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Affiliation(s)
- Shumin Li
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, 250012, China
| | - Junfeng Qi
- Department of Plastic Surgery, Shandong Provincial Maternal and Child Health Care Hospital, Jinan, Shandong, 250012, China
| | - Yu Sun
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, 250012, China
| | - Xueying Gao
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China; Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jinlong Ma
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, 250012, China
| | - Shigang Zhao
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, 250012, China.
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Gáll Z, Székely O. Role of Vitamin D in Cognitive Dysfunction: New Molecular Concepts and Discrepancies between Animal and Human Findings. Nutrients 2021; 13:nu13113672. [PMID: 34835929 PMCID: PMC8620681 DOI: 10.3390/nu13113672] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 10/13/2021] [Accepted: 10/18/2021] [Indexed: 12/12/2022] Open
Abstract
PURPOSE OF REVIEW increasing evidence suggests that besides the several metabolic, endocrine, and immune functions of 1alpha,25-dihydroxyvitamin D (1,25(OH)2D), the neuronal effects of 1,25(OH)2D should also be considered an essential contributor to the development of cognition in the early years and its maintenance in aging. The developmental disabilities induced by vitamin D deficiency (VDD) include neurological disorders (e.g., attention deficit hyperactivity disorder, autism spectrum disorder, schizophrenia) characterized by cognitive dysfunction. On the other hand, VDD has frequently been associated with dementia of aging and neurodegenerative diseases (e.g., Alzheimer's, Parkinson's disease). RECENT FINDINGS various cells (i.e., neurons, astrocytes, and microglia) within the central nervous system (CNS) express vitamin D receptors (VDR). Moreover, some of them are capable of synthesizing and catabolizing 1,25(OH)2D via 25-hydroxyvitamin D 1alpha-hydroxylase (CYP27B1) and 25-hydroxyvitamin D 24-hydroxylase (CYP24A1) enzymes, respectively. Both 1,25(OH)2D and 25-hydroxyvitamin D were determined from different areas of the brain and their uneven distribution suggests that vitamin D signaling might have a paracrine or autocrine nature in the CNS. Although both cholecalciferol and 25-hydroxyvitamin D pass the blood-brain barrier, the influence of supplementation has not yet demonstrated to have a direct impact on neuronal functions. So, this review summarizes the existing evidence for the action of vitamin D on cognitive function in animal models and humans and discusses the possible pitfalls of therapeutic clinical translation.
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Affiliation(s)
- Zsolt Gáll
- Department of Pharmacology and Clinical Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, 540142 Târgu Mureș, Romania
- Correspondence:
| | - Orsolya Székely
- Department of Nephrology/Internal Medicine, Mures County Clinical Hospital, 540103 Târgu Mureș, Romania;
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Bellastella G, Scappaticcio L, Longo M, Carotenuto R, Carbone C, Caruso P, Maio A, Paglionico VA, Vietri MT, Maiorino MI, Esposito K. New insights into vitamin D regulation: is there a role for alkaline phosphatase? J Endocrinol Invest 2021; 44:1891-1896. [PMID: 33492600 PMCID: PMC8357672 DOI: 10.1007/s40618-021-01503-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/06/2021] [Indexed: 11/23/2022]
Abstract
PURPOSE The diagnosis of vitamin D deficiency is based on the determination of total plasma 25-hydroxyvitamin D (25-OHD) concentrations, but the regulation of vitamin D 25-hydroxylation is not a major consideration and very little information is available on this activity. To check what factors could interfere with the activity of vitamin D-25-hydroxylase and thus alter the 25-OHD concentrations, we looked for potential correlations between 25-OHD and results of liver function tests in healthy adults. METHODS This single-centre study was retrospective and consisted of evaluating the correlations between 25-OHD and the activities of aspartate aminotransferase (AST), alanine aminotransferase (ALT), gamma-glutamyl transpeptidase (GGT), alkaline phosphatase (ALP), and bone alkaline phosphatase (BALP) in 349 healthy subjects aged from 18 to 65 years. In particular, in Group 1 (n = 119), we looked for correlations between 25OHD and all liver function tests and in Group 2 (n = 230) the correlation between 25OHD and BALP. RESULTS In Group 1, we found no correlation between 25OHD and AST (r = - 0.03; p = 0.8), ALT (r = - 0.02; p = 0.91), GGT (r = - 0.08; p = 0.68), direct bilirubin (r = - 0.02; p = 0.89), indirect bilirubin (r = - 0.24; p = 0.21), and total bilirubin (r = - 0.24; p = 0.21) but one between 25OHD and ALP (r = - 0.2; p = 0.007); in Group 2, we found a significant negative correlation between 25-OHD and BALP (r = - 0.2; p = 0.0008). CONCLUSIONS The correlations that we found suggest that ALP and BALP might be involved in the regulation of vitamin D-25-hydroxylase activity, but further studies are mandatory to confirm our assumptions.
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Affiliation(s)
- G Bellastella
- Unit of Endocrinology and Metabolic Diseases, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Piazza L. Miraglia 2, 80138, Naples, Italy.
| | - L Scappaticcio
- Unit of Endocrinology and Metabolic Diseases, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Piazza L. Miraglia 2, 80138, Naples, Italy
| | - M Longo
- Unit of Endocrinology and Metabolic Diseases, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Piazza L. Miraglia 2, 80138, Naples, Italy
| | - R Carotenuto
- Unit of Endocrinology and Metabolic Diseases, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Piazza L. Miraglia 2, 80138, Naples, Italy
| | - C Carbone
- Unit of Endocrinology and Metabolic Diseases, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Piazza L. Miraglia 2, 80138, Naples, Italy
| | - P Caruso
- Unit of Endocrinology and Metabolic Diseases, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Piazza L. Miraglia 2, 80138, Naples, Italy
| | - A Maio
- Unit of Endocrinology and Metabolic Diseases, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Piazza L. Miraglia 2, 80138, Naples, Italy
| | - V A Paglionico
- Unit of Endocrinology and Metabolic Diseases, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Piazza L. Miraglia 2, 80138, Naples, Italy
| | - M T Vietri
- Unit of Clinical and Molecular Pathology, Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Piazza Miraglia 2, 80138, Naples, Italy
| | - M I Maiorino
- Unit of Endocrinology and Metabolic Diseases, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Piazza L. Miraglia 2, 80138, Naples, Italy
| | - K Esposito
- Diabetes Unit, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Piazza Miraglia 2, 80138, Naples, Italy
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George JA, Norris SA, Snyman T, Khambule L, Toman M, Crowther NJ. Longitudinal changes in vitamin D and its metabolites in pregnant South Africans. J Steroid Biochem Mol Biol 2021; 212:105949. [PMID: 34242778 DOI: 10.1016/j.jsbmb.2021.105949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 06/28/2021] [Accepted: 06/30/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Vitamin D deficiency (VDD) has been associated with adverse maternal and foetal outcomes and is determined by measuring 25 hydroxyvitamin D (25(OH)D). The 25(OH)D is catabolized to 24, 25-(OH) 2D and the ratio of 25(OH) D to 24, 25-(OH)2D, the vitamin D metabolite ratio (VMR), is thought to be a superior marker of VDD, being elevated in such states. The aims of this study were to assess the longitudinal vitamin D status of pregnant women by measuring cholecalciferol, 25(OH)D, 24, 25-(OH)2D and VMR at two time points and also to determine any association of vitamin D and metabolites with gestational age at birth, birth length and weight. METHODS We recruited 400 pregnant black African women in their first trimester (V1) and measured weights and heights. Ultrasound scans were performed for gestational age. Blood was drawn at V1 and at about 26 weeks (V2) of gestation for cholecalciferol, 25(OH)D, 24, 25-(OH)2D, VMR and parathyroid hormone (PTH). An OGTT was performed at V2 where fasting glucose, insulin and 30-minute glucose were measured. At birth, we measured birth weight, length and gestational age. Maternal insulin, PTH and vitamin D binding protein (VDBP) were measured by immunoassay. Maternal albumin was measured colorimetrically. Maternal cholecalciferol, 25(OH)D and 24, 25-(OH)2D, were measured by mass spectrometry and free and bioavailable vitamin D were calculated. Initial gestation was determined by ultrasound. We compared analytes by visit as well as by 25(OH)D status. Vitamin D deficiency (<30 nmol/L) was defined according to the National Academy of Medicine guidelines. Linear regression analysis was used to determine associations of vitamin D molecules with maternal blood pressure, fasting and 30-minute insulin and blood glucose and neonatal parameters. RESULTS Results are presented for participants for whom we had complete data (n = 330-346 depending on variable). The prevalence of vitamin D deficiency (VDD) was 35.8 % at V1 and 32.4 % at V2. Levels of 25(OH)D did not change significantly between visits. Levels of 24, 25(OH)2D dropped from the first to the second visit (17.64 ± 12.64 to 9.39 ± 9.07 nmol/L; p < 0.0001) while VMR increased ((3.15 (1.31; 7.67) to 7.90 (2.44; 25.98); p < 0.0001). The proportion of women with the lowest cholecalciferol concentrations increased at V2 compared to the V1 (36.1-42.8 %; p = 0.02). In multivariable regression models 25(OH)D was negatively associated with 30-minute glucose concentrations (p = 0.038) whilst 24, 25-(OH)2D was positively associated with fasting insulin (p = 0.017) and HOM A-I R (p = 0.023). There was no correlation of 25(OH)D or metabolites with infant birth weight, birth length or gestational age. CONCLUSIONS Maternal VDD is common in pregnant black South African women. Decreased VMR suggest that catabolism of 25(OH)D is reduced in pregnancy to maintain adequate free vitamin D levels.
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Affiliation(s)
- J A George
- Department of Chemical Pathology, National Health Laboratory Service and University of the Witwatersrand, South Africa.
| | - S A Norris
- MRC Developmental Pathways for Health Research Unit, Faculty of Health, University of the Witwatersrand, Johannesburg, South Africa
| | - T Snyman
- Department of Chemical Pathology, National Health Laboratory Service and University of the Witwatersrand, South Africa
| | - L Khambule
- Department of Chemical Pathology, University of the Witwatersrand, South Africa
| | - M Toman
- Department of Chemical Pathology, National Health Laboratory Service and University of the Witwatersrand, South Africa
| | - N J Crowther
- Department of Chemical Pathology, National Health Laboratory Service and University of the Witwatersrand, South Africa
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Chen H, Zhang H, Xie H, Zheng J, Lin M, Chen J, Tong Y, Jin J, Xu K, Yang J, Sun C, Xu X, Zheng J. Maternal, umbilical arterial metabolic levels and placental Nrf2/CBR1 expression in pregnancies with and without 25-hydroxyvitamin D deficiency. Gynecol Endocrinol 2021; 37:807-813. [PMID: 34232092 DOI: 10.1080/09513590.2021.1942451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND The aim of this case-control study was to document maternal, umbilical arterial metabolic levels and correlations in pregnancies with and without 25-hydroxyvitamin D [25(OH)D] deficiency, while, also investigating the expression of nuclear factor erythroid 2 related factor 2 (Nrf2) and carbonyl reductase 1 (CBR1) in the placenta. METHODS One hundred participants, 50 deficient for 25(OH)D and 50 normal, were recruited from among hospitalized single-term pregnant women who had elected for cesarean section. Umbilical arterial and placental samples were collected during cesarean section. Metabolic levels were assessed for the 25(OH)D deficiency and control groups' maternal, umbilical arterial samples. Nrf2 and CBR1 expression levels were investigated in the placentas of 12 pregnant women with 25(OH)D deficiency and 12 controls. RESULTS Compared with the control participants, the 25(OH)D deficient women had significantly higher triglyceride (TG) levels (3.80 ± 2.11 vs. 2.93 ± 1.16 mmol/L, 3.64 ± 1.84 vs. 2.81 ± 1.16 mmol/L, p < .01, .001); lower high density lipoprotein cholesterol (HDL-C) levels (1.54 ± 0.32 vs. 1.82 ± 0.63 mmol/L, 1.41 ± 0.72 vs. 2.44 ± 1.68 mmol/L, p < .001, .01) in both material blood and the umbilical artery. In addition, Nrf2 and CBR1 expression levels were lower in the maternal 25(OH)D deficient placenta. CONCLUSION 25(OH)D deficient pregnant women have higher TG levels and lower HDL-C levels in both material blood and the umbilical artery. TG level is negatively correlated with 25(OH)D in both the maternal serum and infant umbilical artery. 25(OH)D deficiency also lowers placental expression of Nrf2 and CBR1. UNLABELLED Supplemental data for this article is available online at here.
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Affiliation(s)
- Haiying Chen
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Shanghai University, Wenzhou, PR China
| | - Hongping Zhang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Shanghai University, Wenzhou, PR China
| | - Han Xie
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - Jiayong Zheng
- Department of Wenzhou Key Laboratory of Gynecology and Obstetrics, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People's Hospital, Wenzhou, PR China
| | - Meimei Lin
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Shanghai University, Wenzhou, PR China
| | - Jingjing Chen
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Shanghai University, Wenzhou, PR China
| | - Yu Tong
- Department of Clinical Laboratory, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou Peoples Hospital, Wenzhou, PR China
| | - Jiang Jin
- Department of Clinical Laboratory, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou Peoples Hospital, Wenzhou, PR China
| | - Kai Xu
- Department of Clinical Laboratory, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou Peoples Hospital, Wenzhou, PR China
| | - Jie Yang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Shanghai University, Wenzhou, PR China
| | - Congcong Sun
- Department of Wenzhou Key Laboratory of Gynecology and Obstetrics, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People's Hospital, Wenzhou, PR China
| | - Xiaoming Xu
- Department of Wenzhou Key Laboratory of Gynecology and Obstetrics, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People's Hospital, Wenzhou, PR China
| | - Jianqiong Zheng
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Shanghai University, Wenzhou, PR China
- Department of Obstetrics and Gynecology, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People's Hospital, Wenzhou, PR China
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Sohail A, Al Menhali A, Hisaindee S, Shah I. An LC-MS/MS Method for Analysis of Vitamin D Metabolites and C3 Epimers in Mice Serum: Oral Supplementation Compared to UV Irradiation. Molecules 2021; 26:molecules26175182. [PMID: 34500616 PMCID: PMC8434525 DOI: 10.3390/molecules26175182] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/19/2021] [Accepted: 08/24/2021] [Indexed: 01/08/2023] Open
Abstract
Introduction: The most common forms of vitamin D in human and mouse serum are vitamin D3 and vitamin D2 and their metabolites. The aim of this study is to determine whether diet and sunlight directly affect the circulating concentrations of vitamin D metabolites in a mouse model. We investigated the serum concentrations of eight vitamin D metabolites—vitamin D (vitamin D3 + vitamin D2), 25OHD (25OHD3 + 25OHD2), 1α25(OH)2D (1α25(OH)2D2, and 1α25(OH)2D3)—including their epimer, 3-epi-25OHD (3-epi-25OHD3 and 3-epi-25OHD2), and a bile acid precursor 7alpha-hydroxy-4-cholesten-3-one (7αC4), which is known to cause interference in liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis. Method: The LC-MS/MS method was validated according to FDA-US guidelines. The validated method was used for the analysis of mouse serum samples. Forty blood samples from mice were collected and divided into three groups. The first group, the DDD mice, were fed a vitamin D-deficient diet (25 IU VD3/kg of diet) and kept in the dark; the second group, the SDD mice, were maintained on a standard-vitamin D diet (1000 IU VD3) and kept in the dark; and the third group, SDL, were fed a standard-vitamin D diet (1000 IU VD3) but kept on a normal light/dark cycle. LC-MS/MS was used for the efficient separation and quantitation of all the analytes. Results: The validated method showed good linearity and specificity. The intraday and interday precision were both <16%, and the accuracy across the assay range was within 100 ± 15%. The recoveries ranged between 75 and 95%. The stability results showed that vitamin D metabolites are not very stable when exposed to continuous freeze–thaw cycles; the variations in concentrations of vitamin D metabolites ranged between 15 and 60%. The overlapping peaks of vitamin D, its epimers, and its isobar (7αC4) were resolved using chromatographic separation. There were significant differences in the concentrations of all metabolites of vitamin D between the DDD and SDL mice. Between the groups SDD (control) and SDL, a significant difference in the concentrations of 3-epi-25OHD was noted, where C3 epimer was about 30% higher in SDL group while no significant differences were noted in the concentrations of vitamin D, 25OHD, 1α25(OH)2D, and 7αC4 between SDD and SDL group. Conclusions: A validated method, combined with a simple extraction technique, for the sensitive LC-MS/MS determination of vitamin D metabolites is described here. The method can eliminate the interferences in LC-MS/MS analysis caused by the overlapping epimer and isobar due to them having the same molecular weights as 25OHD. The validated method was applied to mouse serum samples. It was concluded that a standard-vitamin D diet causes an increase in the proportion of all the vitamin D metabolites and C3 epimers and isobar, while UV light has no pronounced effect on the concentrations of the majority of the vitamin D metabolites except 3-epi-25OHD. Further studies are required to confirm this observation in humans and to investigate the biochemical pathways related to vitamin D’s metabolites and their epimers.
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Affiliation(s)
- Amir Sohail
- Department of Chemistry, College of Science, United Arab Emirates University (UAEU), Al Ain 15551, United Arab Emirates; (A.S.); (S.H.)
| | - Asma Al Menhali
- Department of Biology, College of Sciences, United Arab Emirates University (UAEU), Al Ain 15551, United Arab Emirates
- Correspondence: (A.A.M.); (I.S.)
| | - Soleiman Hisaindee
- Department of Chemistry, College of Science, United Arab Emirates University (UAEU), Al Ain 15551, United Arab Emirates; (A.S.); (S.H.)
| | - Iltaf Shah
- Department of Chemistry, College of Science, United Arab Emirates University (UAEU), Al Ain 15551, United Arab Emirates; (A.S.); (S.H.)
- Correspondence: (A.A.M.); (I.S.)
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Menshawey E, Menshawey R, Nabeh OA. Shedding light on vitamin D: the shared mechanistic and pathophysiological role between hypovitaminosis D and COVID-19 risk factors and complications. Inflammopharmacology 2021; 29:1017-1031. [PMID: 34185200 PMCID: PMC8239482 DOI: 10.1007/s10787-021-00835-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/16/2021] [Indexed: 02/07/2023]
Abstract
Severe acute respiratory syndrome coronavirus (SARS-COV-2) is the culprit of the Coronavirus Disease (COVID-19), which has infected approximately 173 million people and killed more than 3.73 million. At risk groups including diabetic and obese patients are more vulnerable to COVID-19-related complications and poor outcomes. Substantial evidence points to hypovitaminosis D as a risk factor for severe disease, the need for ICU, and mortality. 1,25(OH)D, a key regulator of calcium homeostasis, is believed to have various immune-regulatory roles including; promoting anti-inflammatory cytokines, down regulating pro-inflammatory cytokines, dampening entry and replication of SARS-COV-2, and the production of antimicrobial peptides. In addition, there are strong connections which suggest that dysregulated 1,25(OH)D levels play a mechanistic and pathophysiologic role in several disease processes that are shared with COVID-19 including: diabetes, obesity, acute respiratory distress syndrome (ARDS), cytokine storm, and even hypercoagulable states. With evidence continuing to grow for the case that low vitamin D status is a risk factor for COVID-19 disease and poor outcomes, there is a need now to address the public health efforts set in place to minimize infection, such as lock down orders, which may have inadvertently increased hypovitaminosis D in the general population and those already at risk (elderly, obese, and disabled). Moreover, there is a need to address the implications of this evidence and how we may apply the use of cheaply available supplementation, which has yet to overcome the near global concern of hypovitaminosis D. In our review, we exhaustively scope these shared pathophysiologic connections between COVID-19 and hypovitaminosis D.
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Affiliation(s)
- Esraa Menshawey
- Faculty of Medicine, Cairo University, Kasr al Ainy, Geziret Elroda, Manial, Cairo, 11562 Egypt
| | - Rahma Menshawey
- Faculty of Medicine, Cairo University, Kasr al Ainy, Geziret Elroda, Manial, Cairo, 11562 Egypt
| | - Omnia Azmy Nabeh
- Faculty of Medicine, Department of Medical Pharmacology, Cairo University, Kasr al Ainy, Geziret Elroda, Manial, Cairo, 11562 Egypt
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Sipos M, Gerszi D, Dalloul H, Bányai B, Sziva RE, Kollarics R, Magyar P, Török M, Ács N, Szekeres M, Nádasy GL, Hadjadj L, Horváth EM, Várbíró S. Vitamin D Deficiency and Gender Alter Vasoconstrictor and Vasodilator Reactivity in Rat Carotid Artery. Int J Mol Sci 2021; 22:ijms22158029. [PMID: 34360792 PMCID: PMC8347553 DOI: 10.3390/ijms22158029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/19/2021] [Accepted: 07/22/2021] [Indexed: 01/07/2023] Open
Abstract
The vitamin-D-sensitivity of the cardiovascular system may show gender differences. The prevalence of vitamin D (VD) deficiency (VDD) is high, and it alters cardiovascular function and increases the risk of stroke. Our aim was to investigate the vascular reactivity and histological changes of isolated carotid artery of female and male rats in response to different VD supplies. A total of 48 male and female Wistar rats were divided into four groups: female VD supplemented, female VDD, male VD supplemented, male VDD. The vascular function of isolated carotid artery segments was examined by wire myography. Both vitamin D deficiency and male gender resulted in increased phenylephrine-induced contraction. Acetylcholine-induced relaxation decreased in male rats independently from VD status. Inhibition of prostanoid signaling by indomethacin reduced contraction in females, but increased relaxation ability in male rats. Functional changes were accompanied by VDD and gender-specific histological alterations. Elastic fiber density was significantly decreased by VDD in female rats, but not in males. Smooth muscle actin and endothelial nitric oxide synthase levels were significantly lowered, but the thromboxane receptor was elevated in VDD males. Decreased nitrative stress was detected in both male groups independently from VD supply. The observed interactions between vitamin D deficiency and sex may play a role in the gender difference of cardiovascular risk.
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Affiliation(s)
- Miklós Sipos
- Department of Obstetrics and Gynecology, Faculty of Medicine, Semmelweis University, Üllői Street 78/a, 1083 Budapest, Hungary; (M.S.); (D.G.); (H.D.); (R.K.); (M.T.); (N.Á.); (S.V.)
| | - Dóra Gerszi
- Department of Obstetrics and Gynecology, Faculty of Medicine, Semmelweis University, Üllői Street 78/a, 1083 Budapest, Hungary; (M.S.); (D.G.); (H.D.); (R.K.); (M.T.); (N.Á.); (S.V.)
- Department of Physiology, Faculty of Medicine, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (M.S.); (G.L.N.); (E.M.H.)
| | - Hicham Dalloul
- Department of Obstetrics and Gynecology, Faculty of Medicine, Semmelweis University, Üllői Street 78/a, 1083 Budapest, Hungary; (M.S.); (D.G.); (H.D.); (R.K.); (M.T.); (N.Á.); (S.V.)
| | - Bálint Bányai
- Department of Physiology, Faculty of Medicine, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (M.S.); (G.L.N.); (E.M.H.)
| | - Réka Eszter Sziva
- Department of Obstetrics and Gynecology, Faculty of Medicine, Semmelweis University, Üllői Street 78/a, 1083 Budapest, Hungary; (M.S.); (D.G.); (H.D.); (R.K.); (M.T.); (N.Á.); (S.V.)
- Department of Physiology, Faculty of Medicine, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (M.S.); (G.L.N.); (E.M.H.)
- Workgroup for Science Management, Doctoral School, Semmelweis University, Üllői Street 22, 1085 Budapest, Hungary
- Correspondence:
| | - Réka Kollarics
- Department of Obstetrics and Gynecology, Faculty of Medicine, Semmelweis University, Üllői Street 78/a, 1083 Budapest, Hungary; (M.S.); (D.G.); (H.D.); (R.K.); (M.T.); (N.Á.); (S.V.)
- Department of Physiology, Faculty of Medicine, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (M.S.); (G.L.N.); (E.M.H.)
| | - Péter Magyar
- Medical Imaging Centre, Faculty of Medicine, Semmelweis University, Üllői Street 78/a, 1083 Budapest, Hungary;
| | - Marianna Török
- Department of Obstetrics and Gynecology, Faculty of Medicine, Semmelweis University, Üllői Street 78/a, 1083 Budapest, Hungary; (M.S.); (D.G.); (H.D.); (R.K.); (M.T.); (N.Á.); (S.V.)
- Workgroup for Science Management, Doctoral School, Semmelweis University, Üllői Street 22, 1085 Budapest, Hungary
| | - Nándor Ács
- Department of Obstetrics and Gynecology, Faculty of Medicine, Semmelweis University, Üllői Street 78/a, 1083 Budapest, Hungary; (M.S.); (D.G.); (H.D.); (R.K.); (M.T.); (N.Á.); (S.V.)
| | - Mária Szekeres
- Department of Physiology, Faculty of Medicine, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (M.S.); (G.L.N.); (E.M.H.)
- Department of Morphology and Physiology, Faculty of Health Sciences, Semmelweis University, Vas Street 17, 1088, Budapest, Hungary
| | - György L. Nádasy
- Department of Physiology, Faculty of Medicine, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (M.S.); (G.L.N.); (E.M.H.)
| | - Leila Hadjadj
- Department of Translational Medicine, Faculty of Medicine, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary;
| | - Eszter Mária Horváth
- Department of Physiology, Faculty of Medicine, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (B.B.); (M.S.); (G.L.N.); (E.M.H.)
| | - Szabolcs Várbíró
- Department of Obstetrics and Gynecology, Faculty of Medicine, Semmelweis University, Üllői Street 78/a, 1083 Budapest, Hungary; (M.S.); (D.G.); (H.D.); (R.K.); (M.T.); (N.Á.); (S.V.)
- Workgroup for Science Management, Doctoral School, Semmelweis University, Üllői Street 22, 1085 Budapest, Hungary
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Yuan Y, Jagga S, Martins JS, Rana R, Pajevic PD, Liu ES. Impaired 1,25 dihydroxyvitamin D3 action and hypophosphatemia underlie the altered lacuno-canalicular remodeling observed in the Hyp mouse model of XLH. PLoS One 2021; 16:e0252348. [PMID: 34043707 PMCID: PMC8158930 DOI: 10.1371/journal.pone.0252348] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 05/12/2021] [Indexed: 11/28/2022] Open
Abstract
Osteocytes remodel the perilacunar matrix and canaliculi. X-linked hypophosphatemia (XLH) is characterized by elevated serum levels of fibroblast growth factor 23 (FGF23), leading to decreased 1,25 dihydroxyvitamin D3 (1,25D) production and hypophosphatemia. Bones from mice with XLH (Hyp) have enlarged osteocyte lacunae, enhanced osteocyte expression of genes of bone remodeling, and impaired canalicular structure. The altered lacuno-canalicular (LCN) phenotype is improved with 1,25D or anti-FGF23 antibody treatment, pointing to roles for 1,25D and/or phosphate in regulating this process. To address whether impaired 1,25D action results in LCN alterations, the LCN phenotype was characterized in mice lacking the vitamin D receptor (VDR) in osteocytes (VDRf/f;DMP1Cre+). Mice lacking the sodium phosphate transporter NPT2a (NPT2aKO) have hypophosphatemia and high serum 1,25D levels, therefore the LCN phenotype was characterized in these mice to determine if increased 1,25D compensates for hypophosphatemia in regulating LCN remodeling. Unlike Hyp mice, neither VDRf/f;DMP1Cre+ nor NPT2aKO mice have dramatic alterations in cortical microarchitecture, allowing for dissecting 1,25D and phosphate specific effects on LCN remodeling in tibial cortices. Histomorphometric analyses demonstrate that, like Hyp mice, tibiae and calvariae in VDRf/f;DMP1Cre+ and NPT2aKO mice have enlarged osteocyte lacunae (tibiae: 0.15±0.02μm2(VDRf/f;DMP1Cre-) vs 0.19±0.02μm2(VDRf/f;DMP1Cre+), 0.12±0.02μm2(WT) vs 0.18±0.0μm2(NPT2aKO), calvariae: 0.09±0.02μm2(VDRf/f;DMP1Cre-) vs 0.11±0.02μm2(VDRf/f;DMP1Cre+), 0.08±0.02μm2(WT) vs 0.13±0.02μm2(NPT2aKO), p<0.05 all comparisons) and increased immunoreactivity of bone resorption marker Cathepsin K (Ctsk). The osteocyte enriched RNA isolated from tibiae in VDRf/f;DMP1Cre+ and NPT2aKO mice have enhanced expression of matrix resorption genes that are classically expressed by osteoclasts (Ctsk, Acp5, Atp6v0d2, Nhedc2). Treatment of Ocy454 osteocytes with 1,25D or phosphate inhibits the expression of these genes. Like Hyp mice, VDRf/f;DMP1Cre+ and NPT2aKO mice have impaired canalicular organization in tibia and calvaria. These studies demonstrate that hypophosphatemia and osteocyte-specific 1,25D actions regulate LCN remodeling. Impaired 1,25D action and low phosphate levels contribute to the abnormal LCN phenotype observed in XLH.
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Affiliation(s)
- Ye Yuan
- Harvard Medical School, Boston, Massachusetts, United States of America
- Division of Endocrinology, Diabetes, Hypertension, Brigham and Women’s Hospital, Boston, Massachusetts, United States of America
| | - Supriya Jagga
- Harvard Medical School, Boston, Massachusetts, United States of America
- Division of Endocrinology, Diabetes, Hypertension, Brigham and Women’s Hospital, Boston, Massachusetts, United States of America
| | - Janaina S. Martins
- Harvard Medical School, Boston, Massachusetts, United States of America
- Endocrine Unit, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Rakshya Rana
- Division of Endocrinology, Diabetes, Hypertension, Brigham and Women’s Hospital, Boston, Massachusetts, United States of America
| | - Paola Divieti Pajevic
- Department of Translational Dental Medicine, Boston University School of Dental Medicine, Boston, Massachusetts, United States of America
| | - Eva S. Liu
- Harvard Medical School, Boston, Massachusetts, United States of America
- Division of Endocrinology, Diabetes, Hypertension, Brigham and Women’s Hospital, Boston, Massachusetts, United States of America
- * E-mail:
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Fontányi Z, Sziva RE, Pál É, Hadjadj L, Monori-Kiss A, Horváth EM, Benkő R, Magyar A, Heinzlmann A, Benyó Z, Nádasy GL, Masszi G, Várbíró S. Vitamin D Deficiency Reduces Vascular Reactivity of Coronary Arterioles in Male Rats. Curr Issues Mol Biol 2021; 43:79-92. [PMID: 34066967 PMCID: PMC8928984 DOI: 10.3390/cimb43010007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 04/20/2021] [Accepted: 04/28/2021] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Vitamin D deficiency (VDD) may be considered an independent cardiovascular (CV) risk factor, and it is well known that CV risk is higher in males. Our goal was to investigate the pharmacological reactivity and receptor expression of intramural coronary artery segments of male rats in cases of different vitamin D supply. METHODS Four-week-old male Wistar rats were divided into a control group (n = 11) with optimal vitamin D supply (300 IU/kgbw/day) and a VDD group (n = 11, <0.5 IU/kgbw/day). After 8 weeks of treatment, intramural coronary artery segments were microprepared, their pharmacological reactivity was examined by in vitro microangiometry, and their receptor expression was investigated by immunohistochemistry. RESULTS Thromboxane A2 (TXA2)-agonist induced reduced vasoconstriction, testosterone (T) and 17-β-estradiol (E2) relaxations were significantly decreased, a significant decrease in thromboxane receptor (TP) expression was shown, and the reduction in estrogen receptor-α (ERα) expression was on the border of significance in the VDD group. CONCLUSIONS VD-deficient male coronary arteries showed deteriorated pharmacological reactivity to TXA2 and sexual steroids (E2, T). Insufficient vasoconstrictor capacity was accompanied by decreased TP receptor expression, and vasodilator impairments were mainly functional. The decrease in vasoconstrictor and vasodilator responses results in narrowed adaptational range of coronaries, causing inadequate coronary perfusion that might contribute to the increased CV risk in VDD.
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Affiliation(s)
- Zoltán Fontányi
- Department of Obstetrics and Gynaecology, Semmelweis University, Üllői Street 78/a, 1082 Budapest, Hungary; (Z.F.); (S.V.)
| | - Réka Eszter Sziva
- Department of Obstetrics and Gynaecology, Semmelweis University, Üllői Street 78/a, 1082 Budapest, Hungary; (Z.F.); (S.V.)
- Department of Physiology, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (E.M.H.); (R.B.); (G.L.N.)
- Correspondence:
| | - Éva Pál
- Department of Translational Medicine, Semmelweis University, Üllői Street 78/a, 1082 Budapest, Hungary; (É.P.); (L.H.); (A.M.-K.); (Z.B.)
| | - Leila Hadjadj
- Department of Translational Medicine, Semmelweis University, Üllői Street 78/a, 1082 Budapest, Hungary; (É.P.); (L.H.); (A.M.-K.); (Z.B.)
| | - Anna Monori-Kiss
- Department of Translational Medicine, Semmelweis University, Üllői Street 78/a, 1082 Budapest, Hungary; (É.P.); (L.H.); (A.M.-K.); (Z.B.)
| | - Eszter Mária Horváth
- Department of Physiology, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (E.M.H.); (R.B.); (G.L.N.)
| | - Rita Benkő
- Department of Physiology, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (E.M.H.); (R.B.); (G.L.N.)
| | - Attila Magyar
- Department of Anatomy, Histology and Embriology, Semmelweis University, Tűzoltó Street 58, 1094 Budapest, Hungary;
| | - Andrea Heinzlmann
- Department of Anatomy and Histology, University of Veterinary Medicine, István Street 2, 1078 Budapest, Hungary;
| | - Zoltán Benyó
- Department of Translational Medicine, Semmelweis University, Üllői Street 78/a, 1082 Budapest, Hungary; (É.P.); (L.H.); (A.M.-K.); (Z.B.)
| | - György L. Nádasy
- Department of Physiology, Semmelweis University, Tűzoltó Street 37-47, 1094 Budapest, Hungary; (E.M.H.); (R.B.); (G.L.N.)
| | - Gabriella Masszi
- Department of Internal Medicine, National Institute of Mental Health, Neurology and Neurosurgery, Lehel Street 59-61, 1135 Budapest, Hungary;
| | - Szabolcs Várbíró
- Department of Obstetrics and Gynaecology, Semmelweis University, Üllői Street 78/a, 1082 Budapest, Hungary; (Z.F.); (S.V.)
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Ashcroft SP, Fletcher G, Philp AM, Jenkinson C, Das S, Hansbro PM, Atherton PJ, Philp A. Diet-induced vitamin D deficiency reduces skeletal muscle mitochondrial respiration. J Endocrinol 2021; 249:113-124. [PMID: 33862598 DOI: 10.1530/joe-20-0233] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 03/09/2021] [Indexed: 11/08/2022]
Abstract
Vitamin D deficiency is associated with symptoms of skeletal muscle myopathy including muscle weakness and fatigue. Recently, vitamin D-related metabolites have been linked to the maintenance of mitochondrial function within skeletal muscle. However, current evidence is limited to in vitro models and the effects of diet-induced vitamin D deficiency upon skeletal muscle mitochondrial function in vivo have received little attention. In order to examine the role of vitamin D in the maintenance of mitochondrial function in vivo, we utilised an established model of diet-induced vitamin D deficiency in C57BL/6J mice. Mice were either fed a control diet (2200 IU/kg i.e. vitamin D replete) or a vitamin D-deplete (0 IU/kg) diet for periods of 1, 2 and 3 months. Gastrocnemius muscle mitochondrial function and ADP sensitivity were assessed via high-resolution respirometry and mitochondrial protein content via immunoblotting. As a result of 3 months of diet-induced vitamin D deficiency, respiration supported via complex I + II (CI + IIP) and the electron transport chain (ETC) were 35 and 37% lower when compared to vitamin D-replete mice (P < 0.05). Despite functional alterations, citrate synthase activity, AMPK phosphorylation, mitofilin, OPA1 and ETC subunit protein content remained unchanged in response to dietary intervention (P > 0.05). In conclusion, we report that 3 months of diet-induced vitamin D deficiency reduced skeletal muscle mitochondrial respiration in C57BL/6J mice. Our data, when combined with previous in vitro observations, suggest that vitamin D-mediated regulation of mitochondrial function may underlie the exacerbated muscle fatigue and performance deficits observed during vitamin D deficiency.
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Affiliation(s)
- Stephen P Ashcroft
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, Clinical, Metabolic and Molecular Physiology, University of Nottingham, Royal Derby Hospital Centre, Derby, UK
- Mitochondrial Metabolism and Ageing Laboratory, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
| | - Gareth Fletcher
- Mitochondrial Metabolism and Ageing Laboratory, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
| | - Ashleigh M Philp
- Mitochondrial Metabolism and Ageing Laboratory, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
- St Vincent's Clinical School, UNSW Medicine, UNSW Sydney, New South Wales, Australia
| | - Carl Jenkinson
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
- ANZAC Research Institute, University of Sydney, Sydney, New South Wales, Australia
| | - Shatarupa Das
- Centenary Institute, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia
- UTS Centenary Centre for Inflammation, University Technology Sydney, New South Wales, Australia
| | - Philip M Hansbro
- Centenary Institute, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia
- UTS Centenary Centre for Inflammation, University Technology Sydney, New South Wales, Australia
| | - Philip J Atherton
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, Clinical, Metabolic and Molecular Physiology, University of Nottingham, Royal Derby Hospital Centre, Derby, UK
| | - Andrew Philp
- Mitochondrial Metabolism and Ageing Laboratory, Garvan Institute of Medical Research, Sydney, New South Wales, Australia
- St Vincent's Clinical School, UNSW Medicine, UNSW Sydney, New South Wales, Australia
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Barale M, Rossetto Giaccherino R, Ghigo E, Procopio M. Effect of 1-year oral cholecalciferol on a metabolic profile and blood pressure in poor-controlled type 2 diabetes mellitus: an open-label randomized controlled pilot study. J Endocrinol Invest 2021; 44:791-802. [PMID: 32804345 DOI: 10.1007/s40618-020-01373-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 07/23/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE Hypovitaminosis D has been associated with many cardio-metabolic disorders, although their pathogenetic link still remains unclear. Our aim was to evaluate whether 1-year vitamin D (D) supplementation could improve glycemic control, lipid profile, systolic (SBP) and diastolic (DBP) blood pressure levels and body composition. METHODS In an open-label randomized-controlled pilot study, thirty poor-controlled (HbA1c > 59 mmol/mol) type 2 diabetic patients (age 71.5 ± 3.2 years, M/F 21/9, BMI 29.8 ± 3.6 kg/m2) with hypovitaminosis D (25OHD 22.0 ± 11.3 nmol/l) were randomized to cholecalciferol supplementation (500 UI/kg p.o. weekly, + D) or observation (- D) for one year. Changes in parameters of glucose, lipid and blood pressure control at 3, 6, 9 and 12 months vs. baseline were assessed. RESULTS One-year D supplementation restored D status and had a beneficial effect on fasting glucose (FG, mean percentage changes ± SD, - 1.8% ± 23.1 vs. + 18.8% ± 30.0), glycosylated haemoglobin (HbA1c, - 13.7% ± 14.5 vs. - 4.2% ± 14.1), SBP (- 13.4% ± 8.5 vs. - 2.4% ± 12.6) and HDL-cholesterol levels (- 2.1% ± 14.0 vs. - 10.9% ± 12.9; p < 0.05 for all comparisons) in + D vs. - D patients, respectively. In the former, a reduction in HBA1c, SBP and DBP levels, BMI, fat mass index (FMI) and ratio (FMR) was observed after 1 year (p < 0.05 for all comparisons vs. baseline). We noticed a relationship between 1-year mean percentage changes of serum 25OHD and SBP levels (R = - 0.36, p < 0.05). CONCLUSION One-year cholecalciferol supplementation, able to restore D status, significantly improves FG, HbA1c, SBP and HDL-cholesterol levels in patients with poor-controlled type 2 diabetes mellitus and D deficiency.
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Affiliation(s)
- M Barale
- Department of General and Specialty Medicine, Division of Endocrinology, Diabetology and Metabolic Diseases, Molinette Hospital, University of Turin - Cso Dogliotti, 14-10126, Turin, Italy.
| | - R Rossetto Giaccherino
- Department of General and Specialty Medicine, Division of Endocrinology, Diabetology and Metabolic Diseases, Molinette Hospital, University of Turin - Cso Dogliotti, 14-10126, Turin, Italy
| | - E Ghigo
- Department of General and Specialty Medicine, Division of Endocrinology, Diabetology and Metabolic Diseases, Molinette Hospital, University of Turin - Cso Dogliotti, 14-10126, Turin, Italy
| | - M Procopio
- Department of General and Specialty Medicine, Division of Endocrinology, Diabetology and Metabolic Diseases, Molinette Hospital, University of Turin - Cso Dogliotti, 14-10126, Turin, Italy
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Yee MMF, Chin KY, Ima-Nirwana S, Wong SK. Vitamin A and Bone Health: A Review on Current Evidence. Molecules 2021; 26:molecules26061757. [PMID: 33801011 PMCID: PMC8003866 DOI: 10.3390/molecules26061757] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/18/2021] [Accepted: 03/18/2021] [Indexed: 11/16/2022] Open
Abstract
Vitamin A is a fat-soluble micronutrient essential for growth, immunity, and good vision. The preformed retinol is commonly found in food of animal origin whereas provitamin A is derived from food of plant origin. This review summarises the current evidence from animal, human and cell-culture studies on the effects of vitamin A towards bone health. Animal studies showed that the negative effects of retinol on the skeleton were observed at higher concentrations, especially on the cortical bone. In humans, the direct relationship between vitamin A and poor bone health was more pronounced in individuals with obesity or vitamin D deficiency. Mechanistically, vitamin A differentially influenced the stages of osteogenesis by enhancing early osteoblastic differentiation and inhibiting bone mineralisation via retinoic acid receptor (RAR) signalling and modulation of osteocyte/osteoblast-related bone peptides. However, adequate vitamin A intake through food or supplements was shown to maintain healthy bones. Meanwhile, provitamin A (carotene and β-cryptoxanthin) may also protect bone. In vitro evidence showed that carotene and β-cryptoxanthin may serve as precursors for retinoids, specifically all-trans-retinoic acid, which serve as ligand for RARs to promote osteogenesis and suppressed nuclear factor-kappa B activation to inhibit the differentiation and maturation of osteoclasts. In conclusion, we suggest that both vitamin A and provitamin A may be potential bone-protecting agents, and more studies are warranted to support this hypothesis.
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Teshome A, Adane A, Girma B, Mekonnen ZA. The Impact of Vitamin D Level on COVID-19 Infection: Systematic Review and Meta-Analysis. Front Public Health 2021; 9:624559. [PMID: 33748066 PMCID: PMC7973108 DOI: 10.3389/fpubh.2021.624559] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 02/10/2021] [Indexed: 12/13/2022] Open
Abstract
Background: Coronavirus disease (COVID-19) is a respiratory and systemic disorder caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) or novel Coronavirus (nCoV). To date, there is no proven curative treatment for this virus; as a result, prevention remains to be the best strategy to combat coronavirus infection (COVID-19). Vitamin D deficiency (VDD) has been proposed to play a role in coronavirus infection (COVID-19). However, there is no conclusive evidence on its impact on COVID-19 infection. Therefore, the present review aimed to summarize the available evidence regarding the association between Vitamin D levels and the risk of COVID-19 infection. Methods: A systematic literature search of databases (PUBMED/MEDLINE, Cochrane/Wiley library, Scopus, and SciELO) were conducted from May 15, 2020, to December 20, 2020. Studies that assessed the effect of vitamin D level on COVID-19/SARS-2 infection were considered for the review. The qualities of the included studies were evaluated using the JBI tools. Meta-analysis with a random-effects model was conducted and odds ratio with their 95%CI were reported. This systematic review and meta-analysis are reported according to the preferred reporting items for systematic review and meta-analysis (PRISMA) guideline. Results: The electronic and supplementary searches for this review yielded 318 records from which, only 14 of them met the inclusion criteria. The qualitative synthesis indicated that vitamin D deficient individuals were at higher risk of COVID-19 infection as compared to vitamin D sufficient patients. The pooled analysis showed that individuals with Vitamin-D deficiency were 80% more likely to acquire COVID-19 infection as compared to those who have sufficient Vitamin D levels (OR = 1.80; 95%CI: 1.72, 1.88). Begg's test also revealed that there was no significant publication bias between the studies (P = 0.764). The subgroup analysis revealed that the risk of acquiring COVID-19 infection was relatively higher in the case-control study design (OR = 1.81). Conclusions: In conclusion, low serum 25 (OH) Vitamin-D level was significantly associated with a higher risk of COVID-19 infection. The limited currently available data suggest that sufficient Vitamin D level in serum is associated with a significantly decreased risk of COVID-19 infection.
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Affiliation(s)
- Amare Teshome
- Department of Dentistry, School of Medicine, College of Medicine, and Health Science, University of Gondar, Gondar, Ethiopia
| | - Aynishet Adane
- Department of Internal Medicine, School of Medicine, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopia
| | - Biruk Girma
- Department of Dentistry, School of Medicine, College of Medicine, and Health Science, University of Gondar, Gondar, Ethiopia
| | - Zeleke A. Mekonnen
- College of Medicine and Health Science, Institute of Public Health, University of Gondar, Gondar, Ethiopia
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Crescioli C. Vitamin D Restores Skeletal Muscle Cell Remodeling and Myogenic Program: Potential Impact on Human Health. Int J Mol Sci 2021; 22:1760. [PMID: 33578813 PMCID: PMC7916580 DOI: 10.3390/ijms22041760] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/01/2021] [Accepted: 02/05/2021] [Indexed: 12/18/2022] Open
Abstract
Skeletal muscle cells, albeit classified as vitamin D receptor (VDR)-poor cells, are finely controlled by vitamin D through genomic and non-genomic mechanisms. Skeletal muscle constantly undergoes cell remodeling, a complex system under multilevel regulation, mainly orchestrated by the satellite niche in response to a variety of stimuli. Cell remodeling is not limited to satisfy reparative and hypertrophic needs, but, through myocyte transcriptome/proteome renewal, it warrants the adaptations necessary to maintain tissue integrity. While vitamin D insufficiency promotes cell maladaptation, restoring vitamin D levels can correct/enhance the myogenic program. Hence, vitamin D fortified foods or supplementation potentially represents the desired approach to limit or avoid muscle wasting and ameliorate health. Nevertheless, consensus on protocols for vitamin D measurement and supplementation is still lacking, due to the high variability of lab tests and of the levels required in different contexts (i.e., age, sex, heath status, lifestyle). This review aims to describe how vitamin D can orchestrate skeletal muscle cell remodeling and myogenic programming, after reviewing the main processes and cell populations involved in this important process, whose correct progress highly impacts on human health. Topics on vitamin D optimal levels, supplementation and blood determination, which are still under debate, will be addressed.
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Affiliation(s)
- Clara Crescioli
- Department of Movement, Human and Health Sciences, Section of Health Sciences, University of Rome "Foro Italico", Piazza L. de Bosis 6, 00135 Rome, Italy
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Ham NS, Hwang SW, Oh EH, Kim J, Lee HS, Park SH, Yang DH, Ye BD, Byeon JS, Myung SJ, Yang SK. Influence of Severe Vitamin D Deficiency on the Clinical Course of Inflammatory Bowel Disease. Dig Dis Sci 2021; 66:587-596. [PMID: 32219610 DOI: 10.1007/s10620-020-06207-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 03/10/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Previous studies have shown vitamin D status to be associated with disease activity in patients with inflammatory bowel disease (IBD), but its influence on the clinical course of IBD has not been established. AIMS We aimed to analyze whether the serum 25-hydroxyvitamin D3 [25(OH)D] status is associated with clinical characteristics and affects the risk of surgery in patients with IBD. METHODS From the IBD registry of the Asan Medical Center, we identified all patients who had at least one 25(OH)D measurement; we then analyzed the association between clinical factors and 25(OH)D status. 25(OH)D was considered borderline deficient, deficient, and severely deficient at levels of < 30, < 20, and < 10 ng/mL, respectively. RESULTS We included 711 Crohn's disease (CD) and 764 ulcerative colitis (UC) patients who had not undergone surgery before 25(OH)D was measured. Both in CD and in UC patients, reduced 25(OH)D was associated with higher disease activity scores and CRP levels (p < 0.001). Severe 25(OH)D deficiency was associated with ileocolonic disease and complicated behavior in CD (p < 0.05) and was relevant to the disease extent in UC (p < 0.001). Additionally, severe 25(OH)D deficiency was associated with CMV colitis in patients with UC (p < 0.001). In multivariable analysis, severe deficiency of 25(OH)D was an independent risk factor for surgery in both CD (HR 1.93, 95% confidence interval [CI] 1.38-2.70) and UC (HR 2.77, 95% CI 1.14-6.74). CONCLUSION Severe 25(OH)D deficiency may be a marker of a more aggressive clinical course of IBD.
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Affiliation(s)
- Nam Seok Ham
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Korea
| | - Sung Wook Hwang
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Korea.
- Inflammatory Bowel Disease Center, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
| | - Eun Hye Oh
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Korea
| | - Jeongseok Kim
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Korea
| | - Ho-Su Lee
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul, Korea
| | - Sang Hyoung Park
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Korea
- Inflammatory Bowel Disease Center, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Dong-Hoon Yang
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Korea
| | - Byong Duk Ye
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Korea
- Inflammatory Bowel Disease Center, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Jeong-Sik Byeon
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Korea
| | - Seung-Jae Myung
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Korea
| | - Suk-Kyun Yang
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Korea
- Inflammatory Bowel Disease Center, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Stratford K, Haykal-Coates N, Thompson L, Farraj A, Hazari M. Early-life persistent vitamin D deficiency-induced cardiovascular dysfunction in mice is mediated by transient receptor potential C channels. J Steroid Biochem Mol Biol 2021; 206:105804. [PMID: 33338589 PMCID: PMC9152789 DOI: 10.1016/j.jsbmb.2020.105804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 12/07/2020] [Accepted: 12/07/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Studies indicate that chronic vitamin D deficiency (VDD) may predispose to hypertension, yet, there is very little data characterizing its direct cardiac effects. Vitamin D modulates the function of transient receptor potential C cation channels (TRPC), which is a mechanosensitive cation channel that plays a role in cardiac slow-force responses to hemodynamic changes. The purpose of this study was to determine the cardiac effects of VDD and the potential role of TRPC. METHODS Three-week old mice were placed on a VDD or normal diet (ND) for 19 weeks. Mice were then implanted with radiotelemeters for the measurement of heart rate (HR) and heart rate variability (HRV), while a separate group was anesthetized to measure blood pressure (BP) and left ventricular function using an intraventricular probe. Animals were treated with a TRPC antagonist or vehicle after which they were challenged with dobutamine to measure cardiac responses. RESULTS VDD mice had significantly increased BP (72 ± 3 mmHg vs. 62 ± 2 mmHg) and left ventricular pressure (LVP) (84.6 ± 0.8 mmHg vs. 78.2 ± 2.0 mmHg), and decreased cardiac contractility (-3 % vs. + 11 %) and HR response (+8 % vs. + 13 %) to dobutamine when compared to ND. These responses were blocked by the TRPC antagonist. HRV decreased with increasing dobutamine doses in ND but not VDD mice, however, the antagonist had no effect. CONCLUSION VDD increases BP and alters cardiac mechanical function in mice, the latter appears to be mediated by TRPC, in particular TRPC6. Although the cardiac effects might be due to increased BP, it is likely that VDD also affects the function of the heart directly. This is the first study to demonstrate the potentially deleterious effects of VDD on cardiac function and the role of TRPC6 in this response.
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Affiliation(s)
- Kimberly Stratford
- Curriculum in Toxicology and Environmental Medicine, University of North Carolina - Chapel Hill, Chapel Hill, NC, 27599, United States
| | - Najwa Haykal-Coates
- Inhalation Toxicology Facilities Branch, Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, United States
| | - Leslie Thompson
- Cardiopulmonary and Immunotoxicology Branch, Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, United States
| | - Aimen Farraj
- Cardiopulmonary and Immunotoxicology Branch, Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, United States
| | - Mehdi Hazari
- Cardiopulmonary and Immunotoxicology Branch, Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, United States.
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Cereda E, Bogliolo L, de Stefano L, Caccialanza R. A brief discussion of the benefit and mechanism of vitamin D supplementation on coronavirus disease 2019. Curr Opin Clin Nutr Metab Care 2021; 24:102-107. [PMID: 33003119 DOI: 10.1097/mco.0000000000000701] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW Vitamin D exerts extraskeletal functions, including immunomodulatory activity, protection against respiratory tract infections and pleiotropic effects on the cardiovascular system. Since the outbreak of the coronavirus disease-2019 (COVID-19) pandemic, several articles have suggested the potential involvement of vitamin D in reducing the risk and severity of the disease. RECENT FINDINGS Epidemiological and observational studies support the hypothesis of a protective role of vitamin D but most studies are retrospective or based on small samples. However, the pandemic progression and the increased knowledge on the pathogenesis of COVID-19 have challenged the first evidence, suggesting also potential negative consequences derived by adequate vitamin D status. A cautious interpretation of the significance of low vitamin D25OH levels is advisable. The balance between over-activation of innate immunity and the exhaustibility of the adaptive immune response still needs to be clarified. In addition, the modulation of endothelial function, the down-regulation of renin, angiotensin-converting-enzyme (ACE) and angiotensin genes and the up-regulation of ACE2 expression is still an area of research. SUMMARY Speculative hypotheses and observational data have suggested a protective role of vitamin D in COVID-19. However, many unanswered questions remain, aberrant detrimental effects of adequate vitamin D25OH levels cannot be excluded and whether its adequacy may prevent the infection or improve clinical outcomes needs to be assessed by adequately sized and designed population-based studies and intervention trials.
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Affiliation(s)
| | - Laura Bogliolo
- Rheumatology Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
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Abstract
The use of vitamin D to reduce the severity of COVID-19 complications is receiving considerable attention, backed by encouraging data. Its purported mode of action is as an immune modulator. Vitamin D, however, also affects the metabolism of phosphate and Mg, which may well play a critical role in SARS-CoV-2 pathogenesis. SARS-CoV-2 may induce a cytokine storm that drains ATP whose regeneration requires phosphate and Mg. These minerals, however, are often deficient in conditions that predispose people to severe COVID-19, including older age (especially males), diabetes, obesity, and usage of diuretics. Symptoms observed in severe COVID-19 also fit well with those seen in classical hypophosphatemia and hypomagnesemia, such as thrombocytopenia, coagulopathy, dysfunction of liver and kidneys, neurologic disturbances, immunodeficiency, failure of heart and lungs, delayed weaning from a respirator, cardiac arrhythmia, seizures, and, finally, multiorgan failure. Deficiencies of phosphate and Mg can be amplified by kidney problems commonly observed in patients with COVID-19 resulting in their wastage into urine. Available data show that phosphate and Mg are deficient in COVID-19, with phosphate showing a remarkable correlation with its severity. In one experiment, patients with COVID-19 were supplemented with a cocktail of vitamin D3, Mg, and vitamin B12, with very encouraging results. We, thus, argue that patients with COVID-19 should be monitored and treated for phosphate and Mg deficiencies, ideally already in the early phases of infection. Supplementation of phosphate and Mg combined with vitamin D could also be implemented as a preventative strategy in populations at risk.
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