1
|
Landers-Ramos RQ, Serra MC, Blumenthal JB, Ryan AS, Hafer-Macko CE, Prior SJ. Type 2 diabetes and older age contribute to elevated plasma microparticle concentrations independent of chronic stroke. Exp Physiol 2018; 103:1560-1570. [PMID: 30062787 DOI: 10.1113/ep087116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 07/30/2018] [Indexed: 12/19/2022]
Abstract
NEW FINDINGS What is the central question of this study? What is the effect of chronic stroke on circulating microparticle populations, accounting for potential effects of age and type 2 diabetes? What is the main finding and its importance? Elevated concentrations of CD31+ /CD42b- and CD62E+ microparticles appear to be driven by type 2 diabetes but not chronic stroke and are associated with fasting glucose and triglyceride levels. Older age results in elevations in CD62E+ and CD34+ microparticle concentrations. These microparticles have been proposed as potential targets for diagnosing, treating and identifying the clinical progression and complications of type 2 diabetes. ABSTRACT The elevated circulating concentration of endothelial microparticles (MPs) may provide an index of the extent and nature of cellular damage in chronic stroke. The purpose of this study was to determine the circulating concentrations of CD31+ /CD42b- , CD62E+ and CD34+ MPs in chronic stroke subjects, focusing on the effects of chronic stroke by comparison with both older adults without a history of stroke but with type 2 diabetes mellitus (T2DM) and older and young healthy controls. Plasma from three groups of sedentary older (50-75 years) men and women (chronic stroke, T2DM or older healthy) as well as a group of younger (18-39 years) healthy controls was isolated from fasting blood, and CD31+ /CD42b- , CD62E+ and CD34+ MPs were quantified using flow cytometry (n = 17/group). Concentrations of CD31+ /CD42b- and CD62E+ MPs were higher in the T2DM group (P < 0.05), but not chronic stroke, compared to older and younger healthy adults. CD62E+ MP and CD34+ MP concentrations were elevated in the older compared to younger adults (P < 0.05 for both). Sub-analyses excluding chronic stroke subjects who were also diagnosed with diabetes [stroke (diabetes- )] revealed lower CD31+ /CD42b- (P < 0.05) and CD62E+ (P = 0.08) MPs in the stroke (diabetes- ) group compared to the T2DM group. CD31+ /CD42b- MP and CD62E+ MP concentrations were each associated with fasting glucose levels and CD31+ /CD42b- MPs also were associated with triglyceride levels. As MPs have been proposed as potential targets for diagnosing, treating and identifying the clinical progression of T2DM, our study provides further support for the use of CD31+ /CD42b- and CD62E+ MPs in the clinical progression of T2DM and associated vascular complications.
Collapse
Affiliation(s)
- Rian Q Landers-Ramos
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.,Baltimore Veterans Affairs Geriatric Research, Education and Clinical Center, Baltimor, MD, USA.,Department of Kinesiology, University of Maryland, College Park, MD, USA
| | - Monica C Serra
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.,Baltimore Veterans Affairs Geriatric Research, Education and Clinical Center, Baltimor, MD, USA.,Emory University School of Medicine and Atlanta Veterans Affairs Medical Center, Atlanta, GA, USA
| | - Jacob B Blumenthal
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.,Baltimore Veterans Affairs Geriatric Research, Education and Clinical Center, Baltimor, MD, USA
| | - Alice S Ryan
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.,Baltimore Veterans Affairs Geriatric Research, Education and Clinical Center, Baltimor, MD, USA
| | - Charlene E Hafer-Macko
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.,Baltimore Veterans Affairs Geriatric Research, Education and Clinical Center, Baltimor, MD, USA
| | - Steven J Prior
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.,Baltimore Veterans Affairs Geriatric Research, Education and Clinical Center, Baltimor, MD, USA.,Department of Kinesiology, University of Maryland, College Park, MD, USA
| |
Collapse
|
2
|
Sun H, Yao W, Tang Y, Zhuang W, Wu D, Huang S, Sheng H. Urinary exosomes as a novel biomarker for evaluation of α-lipoic acid's protective effect in early diabetic nephropathy. J Clin Lab Anal 2017; 31. [PMID: 28116765 DOI: 10.1002/jcla.22129] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Accepted: 12/12/2016] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Long-term administration of α-lipoic acid (α-LA) is proved to ameliorate renal impairment. Herein we assessed serum, urinary biomarkers and vascular endothelium function to evaluate its short-period therapeutic effect and identify novel biomarkers for diabetic nephropathy (DN). METHODS Sixty-two microalbuminuria-stage DN patients were randomly divided into two groups and received the following treatment for 8 weeks: (1) routine treatment(DM group); (2) routine treatment with 600 mg/d α-lipoic acid intravenously (α-LA group). Another total of 21 patients were recruited for the second-stage study and randomly divided into two groups: normoalbuminuria (UAER <30 mg/24 h) and microalbuminuria (UAER from 30-300 mg/24 h). RESULTS With α-LA treatment, urinary albumin excretion rates (UAER), serum creatinine (SCr) and malonaldehyde (MDA) declined significantly, whereas plasma superoxide dismutase (SOD)activity increased and endothelium-dependent flow mediated vasodilation (FMD) flexibility improved dramatically. Furthermore, the improvement of FMD showed positive correlation with the variation in MDA and SOD as well (r values are .516 and .435, P<.01 and P<.05, respectively). In contrast, these markers have no significant difference in the DM group with routine treatment. Notably, the CD63 expressing of exosomes in urine was found higher in the normoalbuminuria patients compared with those in microalbuminuria, parallelly only declined markedly after α-LA administration in normoalbuminuria patients. CONCLUSION In summary, we emphasize short-term α-LA could protect the kidney in the early DN against general oxidative stress, particularly the urinary CD63-positive exosome could be a potential sensitive and therapeutic indicator.
Collapse
Affiliation(s)
- Hanxiao Sun
- Department of Laboratory Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weifeng Yao
- Department of Endocine, Wuxi No. 2 Hospital Affiliated to Nanjing Medical University, Wuxi, China
| | - Yubin Tang
- Department of Endocine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenfang Zhuang
- Department of Laboratory Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dan Wu
- Department of Laboratory Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shan Huang
- Department of Endocine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huiming Sheng
- Department of Laboratory Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
3
|
Ludvigsen TP, Wiinberg N, Jensen CJ, Callesen AT, Andersen RW, Jørgensen ASH, Christoffersen BØ, Pedersen HD, Moesgaard SG, Olsen LH. Noninvasive assessment of pulse-wave velocity and flow-mediated vasodilation in anesthetized Göttingen minipigs. Comp Med 2014; 64:471-477. [PMID: 25527028 PMCID: PMC4275083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 04/02/2014] [Accepted: 05/08/2014] [Indexed: 06/04/2023]
Abstract
Few methods for noninvasive assessment of arterial stiffness and endothelial dysfunction in porcine models are available. The aim of this study was to evaluate methods for assessment of arterial stiffness and endothelial dysfunction in anesthetized Göttingen minipigs. Pulse-wave velocity (PWV) was assessed in male Göttingen minipigs (n = 8; age approximately 60 wk) by using applanation tonometry of the carotid and femoral arteries. In addition, flow-mediated vasodilation (FMD) was assessed by using vascular ultrasonography of the brachial artery to evaluate endothelial dysfunction. To evaluate the reproducibility of the methods, minipigs were anesthetized by intravenous infusion of ketamine and midazolam and examined every other day for a total of 3 trials. Neither examination day nor systolic, diastolic, or mean arterial blood pressure statistically influenced PWV or FMD. The median interexamination coefficient of variation was 17% for PWV and 59% for FMD. Measured values of PWV corresponded largely to those in clinically healthy humans, but FMD values were lower than expected for lean, young animals. Although the ketamine-midazolam anesthesia we used has been associated with minor hemodynamic effects in vivo, in vitro studies suggest that both drugs are vasodilatory. Therefore anesthesia might have influenced the endothelial response, contributing to the modest FMD response and the concurrent high coefficients of variation that we noted. We conclude that PWV—but not FMD—showed acceptable interexamination variation for its potential application in porcine models.
Collapse
Affiliation(s)
- Trine P Ludvigsen
- Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg, Denmark; Novo Nordisk A/S, Måløv, Denmark
| | - Niels Wiinberg
- Department of Clinical Physiology and Nuclear Medicine, Frederiksberg Hospital, Frederiksberg, Denmark
| | - Christina J Jensen
- Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg, Denmark
| | - Annemette T Callesen
- Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg, Denmark
| | - Regitze W Andersen
- Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg, Denmark
| | - Anne Sofie H Jørgensen
- Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg, Denmark
| | | | | | | | - Lisbeth H Olsen
- Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg, Denmark.
| |
Collapse
|
4
|
Mikaelian I, Cameron M, Dalmas DA, Enerson BE, Gonzalez RJ, Guionaud S, Hoffmann PK, King NMP, Lawton MP, Scicchitano MS, Smith HW, Thomas RA, Weaver JL, Zabka TS. Nonclinical Safety Biomarkers of Drug-induced Vascular Injury. Toxicol Pathol 2014; 42:635-57. [DOI: 10.1177/0192623314525686] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Better biomarkers are needed to identify, characterize, and/or monitor drug-induced vascular injury (DIVI) in nonclinical species and patients. The Predictive Safety Testing Consortium (PSTC), a precompetitive collaboration of pharmaceutical companies and the U.S. Food and Drug Administration (FDA), formed the Vascular Injury Working Group (VIWG) to develop and qualify translatable biomarkers of DIVI. The VIWG focused its research on acute DIVI because early detection for clinical and nonclinical safety monitoring is desirable. The VIWG developed a strategy based on the premise that biomarkers of DIVI in rat would be translatable to humans due to the morphologic similarity of vascular injury between species regardless of mechanism. The histomorphologic lexicon for DIVI in rat defines degenerative and adaptive findings of the vascular endothelium and smooth muscles, and characterizes inflammatory components. We describe the mechanisms of these changes and their associations with candidate biomarkers for which advanced analytical method validation was completed. Further development is recommended for circulating microRNAs, endothelial microparticles, and imaging techniques. Recommendations for sample collection and processing, analytical methods, and confirmation of target localization using immunohistochemistry and in situ hybridization are described. The methods described are anticipated to aid in the identification and qualification of translational biomarkers for DIVI.
Collapse
Affiliation(s)
- Igor Mikaelian
- Hoffmann-La Roche Inc, Nutley, New Jersey, USA
- Abbvie, Worcester, Massachusetts, USA
| | | | | | | | - Raymond J. Gonzalez
- Merck Research Laboratories, Merck and Co, Inc, West Point, Pennsylvania, USA
| | - Silvia Guionaud
- Shire, Hampshire International Business Park, Basingstoke, United Kingdom
| | | | | | | | | | | | | | | | | | | |
Collapse
|
5
|
Chen S, Feng H, Sherchan P, Klebe D, Zhao G, Sun X, Zhang J, Tang J, Zhang JH. Controversies and evolving new mechanisms in subarachnoid hemorrhage. Prog Neurobiol 2014; 115:64-91. [PMID: 24076160 PMCID: PMC3961493 DOI: 10.1016/j.pneurobio.2013.09.002] [Citation(s) in RCA: 270] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 09/07/2013] [Accepted: 09/12/2013] [Indexed: 12/13/2022]
Abstract
Despite decades of study, subarachnoid hemorrhage (SAH) continues to be a serious and significant health problem in the United States and worldwide. The mechanisms contributing to brain injury after SAH remain unclear. Traditionally, most in vivo research has heavily emphasized the basic mechanisms of SAH over the pathophysiological or morphological changes of delayed cerebral vasospasm after SAH. Unfortunately, the results of clinical trials based on this premise have mostly been disappointing, implicating some other pathophysiological factors, independent of vasospasm, as contributors to poor clinical outcomes. Delayed cerebral vasospasm is no longer the only culprit. In this review, we summarize recent data from both experimental and clinical studies of SAH and discuss the vast array of physiological dysfunctions following SAH that ultimately lead to cell death. Based on the progress in neurobiological understanding of SAH, the terms "early brain injury" and "delayed brain injury" are used according to the temporal progression of SAH-induced brain injury. Additionally, a new concept of the vasculo-neuronal-glia triad model for SAH study is highlighted and presents the challenges and opportunities of this model for future SAH applications.
Collapse
Affiliation(s)
- Sheng Chen
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Department of Physiology & Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Hua Feng
- Department of Neurosurgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Prativa Sherchan
- Department of Physiology & Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Damon Klebe
- Department of Physiology & Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Gang Zhao
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shanxi, China
| | - Xiaochuan Sun
- Department of Neurosurgery, First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Jianmin Zhang
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jiping Tang
- Department of Physiology & Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - John H Zhang
- Department of Physiology & Pharmacology, Loma Linda University, Loma Linda, CA, USA; Department of Neurosurgery, Loma Linda University, Loma Linda, CA, USA.
| |
Collapse
|