Systemic Lupus Erythematosus and Vitamin D Deficiency Are Associated with Shorter Telomere Length among African Americans: A Case-Control Study

Systemic lupus erythematosus (SLE) is a chronic systemic autoimmune disease that disproportionately affects African American females. The causes of SLE are unknown but postulated to be a combination of genetic predisposition and environmental triggers. Vitamin D deficiency is one of the possible env...

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Veröffentlicht in:PloS one Jg. 8; H. 5; S. e63725
Hauptverfasser: Hoffecker, Brett M., Raffield, Laura M., Kamen, Diane L., Nowling, Tamara K.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States Public Library of Science 20.05.2013
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ISSN:1932-6203, 1932-6203
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Abstract Systemic lupus erythematosus (SLE) is a chronic systemic autoimmune disease that disproportionately affects African American females. The causes of SLE are unknown but postulated to be a combination of genetic predisposition and environmental triggers. Vitamin D deficiency is one of the possible environmental triggers. In this study we evaluated relationships between vitamin D status, cellular aging (telomere length) and anti-telomere antibodies among African American Gullah women with SLE. The study population included African American female SLE patients and unaffected controls from the Sea Island region of South Carolina. Serum 25-hydroxyvitamin D levels were measured using a nonchromatographic radioimmunoassay. Telomere length was measured in genomic DNA of peripheral blood mononuclear cells (PBMCs) by monochrome multiplex quantitative PCR. Anti-telomere antibody levels were measured by enzyme-linked immunosorbent assay (ELISA). Patients with SLE had significantly shorter telomeres and higher anti-telomere antibody titers compared to age- and gender-matched unaffected controls. There was a positive correlation between anti-telomere antibody levels and disease activity among patients and a significant correlation of shorter telomeres with lower 25-hydroxyvitamin D levels in both patients and controls. In follow-up examination of a subset of the patients, the patients who remained vitamin D deficient tended to have shorter telomeres than those patients whose 25-hydroxyvitamin D levels were repleted. Increasing 25-hydroxyvitamin D levels in African American patients with SLE may be beneficial in maintaining telomere length and preventing cellular aging. Moreover, anti-telomere antibody levels may be a promising biomarker of SLE status and disease activity.
AbstractList Systemic lupus erythematosus (SLE) is a chronic systemic autoimmune disease that disproportionately affects African American females. The causes of SLE are unknown but postulated to be a combination of genetic predisposition and environmental triggers. Vitamin D deficiency is one of the possible environmental triggers. In this study we evaluated relationships between vitamin D status, cellular aging (telomere length) and anti-telomere antibodies among African American Gullah women with SLE. The study population included African American female SLE patients and unaffected controls from the Sea Island region of South Carolina. Serum 25-hydroxyvitamin D levels were measured using a nonchromatographic radioimmunoassay. Telomere length was measured in genomic DNA of peripheral blood mononuclear cells (PBMCs) by monochrome multiplex quantitative PCR. Anti-telomere antibody levels were measured by enzyme-linked immunosorbent assay (ELISA). Patients with SLE had significantly shorter telomeres and higher anti-telomere antibody titers compared to age- and gender-matched unaffected controls. There was a positive correlation between anti-telomere antibody levels and disease activity among patients and a significant correlation of shorter telomeres with lower 25-hydroxyvitamin D levels in both patients and controls. In follow-up examination of a subset of the patients, the patients who remained vitamin D deficient tended to have shorter telomeres than those patients whose 25-hydroxyvitamin D levels were repleted. Increasing 25-hydroxyvitamin D levels in African American patients with SLE may be beneficial in maintaining telomere length and preventing cellular aging. Moreover, anti-telomere antibody levels may be a promising biomarker of SLE status and disease activity.
Systemic lupus erythematosus (SLE) is a chronic systemic autoimmune disease that disproportionately affects African American females. The causes of SLE are unknown but postulated to be a combination of genetic predisposition and environmental triggers. Vitamin D deficiency is one of the possible environmental triggers. In this study we evaluated relationships between vitamin D status, cellular aging (telomere length) and anti-telomere antibodies among African American Gullah women with SLE. The study population included African American female SLE patients and unaffected controls from the Sea Island region of South Carolina. Serum 25-hydroxyvitamin D levels were measured using a nonchromatographic radioimmunoassay. Telomere length was measured in genomic DNA of peripheral blood mononuclear cells (PBMCs) by monochrome multiplex quantitative PCR. Anti-telomere antibody levels were measured by enzyme-linked immunosorbent assay (ELISA). Patients with SLE had significantly shorter telomeres and higher anti-telomere antibody titers compared to age- and gender-matched unaffected controls. There was a positive correlation between anti-telomere antibody levels and disease activity among patients and a significant correlation of shorter telomeres with lower 25-hydroxyvitamin D levels in both patients and controls. In follow-up examination of a subset of the patients, the patients who remained vitamin D deficient tended to have shorter telomeres than those patients whose 25-hydroxyvitamin D levels were repleted. Increasing 25-hydroxyvitamin D levels in African American patients with SLE may be beneficial in maintaining telomere length and preventing cellular aging. Moreover, anti-telomere antibody levels may be a promising biomarker of SLE status and disease activity.Systemic lupus erythematosus (SLE) is a chronic systemic autoimmune disease that disproportionately affects African American females. The causes of SLE are unknown but postulated to be a combination of genetic predisposition and environmental triggers. Vitamin D deficiency is one of the possible environmental triggers. In this study we evaluated relationships between vitamin D status, cellular aging (telomere length) and anti-telomere antibodies among African American Gullah women with SLE. The study population included African American female SLE patients and unaffected controls from the Sea Island region of South Carolina. Serum 25-hydroxyvitamin D levels were measured using a nonchromatographic radioimmunoassay. Telomere length was measured in genomic DNA of peripheral blood mononuclear cells (PBMCs) by monochrome multiplex quantitative PCR. Anti-telomere antibody levels were measured by enzyme-linked immunosorbent assay (ELISA). Patients with SLE had significantly shorter telomeres and higher anti-telomere antibody titers compared to age- and gender-matched unaffected controls. There was a positive correlation between anti-telomere antibody levels and disease activity among patients and a significant correlation of shorter telomeres with lower 25-hydroxyvitamin D levels in both patients and controls. In follow-up examination of a subset of the patients, the patients who remained vitamin D deficient tended to have shorter telomeres than those patients whose 25-hydroxyvitamin D levels were repleted. Increasing 25-hydroxyvitamin D levels in African American patients with SLE may be beneficial in maintaining telomere length and preventing cellular aging. Moreover, anti-telomere antibody levels may be a promising biomarker of SLE status and disease activity.
Audience Academic
Author Hoffecker, Brett M.
Raffield, Laura M.
Nowling, Tamara K.
Kamen, Diane L.
AuthorAffiliation 2 Medical Research Service, Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina, United States of America
University of Michigan, United States of America
1 Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States of America
AuthorAffiliation_xml – name: 2 Medical Research Service, Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina, United States of America
– name: 1 Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States of America
– name: University of Michigan, United States of America
Author_xml – sequence: 1
  givenname: Brett M.
  surname: Hoffecker
  fullname: Hoffecker, Brett M.
– sequence: 2
  givenname: Laura M.
  surname: Raffield
  fullname: Raffield, Laura M.
– sequence: 3
  givenname: Diane L.
  surname: Kamen
  fullname: Kamen, Diane L.
– sequence: 4
  givenname: Tamara K.
  surname: Nowling
  fullname: Nowling, Tamara K.
BackLink https://www.ncbi.nlm.nih.gov/pubmed/23700431$$D View this record in MEDLINE/PubMed
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2013 Hoffecker et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License: https://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
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Competing Interests: The authors have declared that no competing interests exist.
These authors also contributed equally to this work.
Conceived and designed the experiments: DLK TKN. Performed the experiments: BMH LMR TKN. Analyzed the data: BMH LMR DLK TKN. Contributed reagents/materials/analysis tools: DLK TKN. Wrote the paper: BMH LMR DLK TKN.
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Snippet Systemic lupus erythematosus (SLE) is a chronic systemic autoimmune disease that disproportionately affects African American females. The causes of SLE are...
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SubjectTerms 25-Hydroxyvitamin D
Adult
African American women
African Americans
African Americans - genetics
Aging
Antibodies
Autoimmune diseases
Biology
Biomarkers
Case-Control Studies
Chromosomes
Chronic conditions
Correlation
Deoxyribonucleic acid
Disease control
DNA
Enzyme-linked immunosorbent assay
Female
Females
Humans
Leukocytes (mononuclear)
Lupus
Lupus Erythematosus, Systemic - blood
Lupus Erythematosus, Systemic - genetics
Medical research
Medicine
Middle Aged
Minority & ethnic groups
Multiplexing
Patients
Peripheral blood mononuclear cells
Population studies
Radioimmunoassay
Systemic lupus erythematosus
Telomere - genetics
Telomere Homeostasis
Telomeres
Vitamin D
Vitamin D - blood
Vitamin D deficiency
Vitamin D Deficiency - blood
Vitamin D Deficiency - genetics
Vitamin deficiency
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Title Systemic Lupus Erythematosus and Vitamin D Deficiency Are Associated with Shorter Telomere Length among African Americans: A Case-Control Study
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http://dx.doi.org/10.1371/journal.pone.0063725
Volume 8
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