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Disbrow E, Stokes KY, Ledbetter C, Patterson J, Kelley R, Pardue S, Reekes T, Larmeu L, Batra V, Yuan S, Cvek U, Trutschl M, Kilgore P, Alexander JS, Kevil CG. Plasma hydrogen sulfide: A biomarker of Alzheimer's disease and related dementias. Alzheimers Dement 2021; 17:1391-1402. [PMID: 33710769 PMCID: PMC8451930 DOI: 10.1002/alz.12305] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/29/2020] [Accepted: 01/15/2021] [Indexed: 12/17/2022]
Abstract
While heart disease remains a common cause of mortality, cerebrovascular disease also increases with age, and has been implicated in Alzheimer's disease and related dementias (ADRD). We have described hydrogen sulfide (H2S), a signaling molecule important in vascular homeostasis, as a biomarker of cardiovascular disease. We hypothesize that plasma H2S and its metabolites also relate to vascular and cognitive dysfunction in ADRD. We used analytical biochemical methods to measure plasma H2S metabolites and MRI to evaluate indicators of microvascular disease in ADRD. Levels of total H2S and specific metabolites were increased in ADRD versus controls. Cognition and microvascular disease indices were correlated with H2S levels. Total plasma sulfide was the strongest indicator of ADRD, and partially drove the relationship between cognitive dysfunction and white matter lesion volume, an indicator of microvascular disease. Our findings show that H2S is dysregulated in dementia, providing a potential biomarker for diagnosis and intervention.
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Affiliation(s)
- Elizabeth Disbrow
- Department of Neurology, LSU Health Shreveport, Shreveport, Louisiana, USA.,Center for Brain Health, LSU Health Shreveport, Shreveport, Louisiana, USA.,Center for Cardiovascular Diseases and Sciences, LSU Health Shreveport, Shreveport, Louisiana, USA.,Department of Pharmacology, LSU Health Shreveport, Shreveport, Louisiana, USA
| | - Karen Y Stokes
- Center for Brain Health, LSU Health Shreveport, Shreveport, Louisiana, USA.,Center for Cardiovascular Diseases and Sciences, LSU Health Shreveport, Shreveport, Louisiana, USA.,Department of Molecular and Cellular Physiology, LSU Health Shreveport, Shreveport, Louisiana, USA
| | - Christina Ledbetter
- Center for Brain Health, LSU Health Shreveport, Shreveport, Louisiana, USA.,Department of Neurosurgery, LSU Health Shreveport, Shreveport, Louisiana, USA
| | - James Patterson
- Center for Brain Health, LSU Health Shreveport, Shreveport, Louisiana, USA.,Department of Psychiatry and Behavioral Medicine, LSU Health Shreveport, Shreveport, Louisiana, USA
| | - Roger Kelley
- Department of Neurology, LSU Health Shreveport, Shreveport, Louisiana, USA.,Center for Brain Health, LSU Health Shreveport, Shreveport, Louisiana, USA
| | - Sibile Pardue
- Center for Cardiovascular Diseases and Sciences, LSU Health Shreveport, Shreveport, Louisiana, USA
| | - Tyler Reekes
- Center for Brain Health, LSU Health Shreveport, Shreveport, Louisiana, USA.,Department of Pharmacology, LSU Health Shreveport, Shreveport, Louisiana, USA
| | - Lana Larmeu
- Center for Brain Health, LSU Health Shreveport, Shreveport, Louisiana, USA.,Department of Neurosurgery, LSU Health Shreveport, Shreveport, Louisiana, USA
| | - Vinita Batra
- Center for Brain Health, LSU Health Shreveport, Shreveport, Louisiana, USA.,Department of Psychiatry and Behavioral Medicine, LSU Health Shreveport, Shreveport, Louisiana, USA
| | - Shuai Yuan
- Vascular Medicine Institute, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Urska Cvek
- Dept. of Computer Science, Laboratory for Advanced Biomedical Informatics, Louisiana State University Shreveport, Shreveport, Louisiana, USA
| | - Marjan Trutschl
- Dept. of Computer Science, Laboratory for Advanced Biomedical Informatics, Louisiana State University Shreveport, Shreveport, Louisiana, USA
| | - Phillip Kilgore
- Dept. of Computer Science, Laboratory for Advanced Biomedical Informatics, Louisiana State University Shreveport, Shreveport, Louisiana, USA
| | - J Steven Alexander
- Department of Neurology, LSU Health Shreveport, Shreveport, Louisiana, USA.,Center for Brain Health, LSU Health Shreveport, Shreveport, Louisiana, USA.,Center for Cardiovascular Diseases and Sciences, LSU Health Shreveport, Shreveport, Louisiana, USA.,Department of Molecular and Cellular Physiology, LSU Health Shreveport, Shreveport, Louisiana, USA
| | - Christopher G Kevil
- Center for Brain Health, LSU Health Shreveport, Shreveport, Louisiana, USA.,Center for Cardiovascular Diseases and Sciences, LSU Health Shreveport, Shreveport, Louisiana, USA.,Department of Pathology and Translational Pathobiology, Department of Pathology, and Cell Biology and Anatomy, LSU Health Shreveport, Shreveport, Louisiana, USA
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