scholarly journals MRI confirms loss of blood-brain barrier integrity in a mouse model of disseminated candidiasis

2013 ◽  
Vol 26 (9) ◽  
pp. 1125-1134 ◽  
Author(s):  
Dhammika H. M. L. P. Navarathna ◽  
Jeeva Munasinghe ◽  
Martin J. Lizak ◽  
Debasis Nayak ◽  
Dorian B. McGavern ◽  
...  
Keyword(s):  
Mouse Model ◽  
Blood Brain Barrier ◽  
Brain Barrier ◽  
Barrier Integrity ◽  
Disseminated Candidiasis ◽  
Blood Brain ◽  
Blood Brain Barrier Integrity

Abstract TP256: Mouse Model of Uremic Cerebral Microbleeds

Stroke ◽  
2016 ◽  
Vol 47 (suppl_1) ◽  
Author(s):  
Wei Ling Lau ◽  
Mary Tarbiat-Boldaji ◽  
Hayley Smalls ◽  
Ane Nunes ◽  
Javad Savoj ◽  
...  
Keyword(s):  
Mouse Model ◽  
Tight Junction ◽  
Blood Brain Barrier ◽  
Cerebral Microbleeds ◽  
Brain Barrier ◽  
Barrier Integrity ◽  
Blood Brain ◽  
Increased Risk ◽  
Junction Protein ◽  
Blood Brain Barrier Integrity

Introduction: Cerebral microbleeds are more common in chronic kidney disease (CKD) and dialysis patients compared to the general population. Diminished kidney function alone appears to be a risk factor for microbleeds, independent of age and hypertension. Microbleed burden in CKD patients is associated with increased risk of future hemorrhagic stroke and with cognitive dysfunction. The mechanisms that drive uremic microbleed formation are unclear. Hypothesis: We hypothesized that CKD mice are predisposed to develop cerebral microhemorrhages (the pathologic substrate of microbleeds), and that a standardized inflammatory stimulus (lipopolysaccharide, LPS) will amplify microhemorrhage burden in CKD mice compared to non-CKD controls (CTL). We also hypothesized that uremia induces depletion of tight junction proteins, altering blood-brain barrier integrity and representing a potential mechanism of microbleed formation. Methods: Animal groups included CTL (n=3), CKD (n=3), CTL+LPS (n=5) and CKD+LPS (n=5). CKD induction in male C57BL/6 mice was achieved via nephrotoxic adenine diet x18 days. Two weeks following CKD induction, CKD and control mice were treated with LPS 1 mg/kg i.p. dosed at 0, 6 and 24 hours. Brains were harvested one week after LPS injections and 40-micron sections were stained using Prussian blue to identify microhemorrhages. Immunohistochemistry was performed for the blood-brain barrier tight junction protein claudin-5. Results: CKD mice had significantly elevated blood urea nitrogen, and tubulointerstitial fibrosis was present on kidney histology. Total number of microhemorrhages per brain was 2.3±1.5 (mean ± standard error of the mean) for CTL mice, 8.3±1.5 for CKD mice, 23.2±4.2 for CTL+LPS mice, and 27.6±6.2 for CKD+LPS mice (p<0.05 for CKD+LPS vs. CTL). Immunostaining showed decreased claudin-5 expression in CKD mice compared to CTL. Conclusions: We have generated a mouse model that will facilitate future mechanistic studies in the field of uremic microbleeds. Our initial findings suggest that CKD alters blood-brain barrier integrity and that inflammation amplifies development of microbleeds in CKD.

scholarly journals Spaceflight induces oxidative damage to blood‐brain barrier integrity in a mouse model

2020 ◽  
Vol 34 (11) ◽  
pp. 15516-15530
Author(s):  
Xiao W. Mao ◽  
Nina C. Nishiyama ◽  
Stephanie D. Byrum ◽  
Seta Stanbouly ◽  
Tamako Jones ◽  
...  
Keyword(s):  
Mouse Model ◽  
Oxidative Damage ◽  
Blood Brain Barrier ◽  
Brain Barrier ◽  
Barrier Integrity ◽  
Blood Brain ◽  
Blood Brain Barrier Integrity

scholarly journals Monitoring Blood-Brain Barrier Integrity Following Amyloid-β Immunotherapy Using Gadolinium-Enhanced MRI in a PDAPP Mouse Model

2016 ◽  
Vol 54 (2) ◽  
pp. 723-735 ◽  
Author(s):  
Ines Blockx ◽  
Steve Einstein ◽  
Pieter-Jan Guns ◽  
Johan Van Audekerke ◽  
Caroline Guglielmetti ◽  
...  
Keyword(s):  
Mouse Model ◽  
Blood Brain Barrier ◽  
Amyloid Β ◽  
Brain Barrier ◽  
Barrier Integrity ◽  
Blood Brain ◽  
Enhanced Mri ◽  
Blood Brain Barrier Integrity

scholarly journals Platelet regulates neuroinflammation and restores blood–brain barrier integrity in a mouse model of traumatic brain injury

2020 ◽  
Vol 154 (2) ◽  
pp. 190-204 ◽  
Author(s):  
Cheng Gao ◽  
Haochen Wang ◽  
Tao Wang ◽  
Chengliang Luo ◽  
Zufeng Wang ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Mouse Model ◽  
Blood Brain Barrier ◽  
Brain Barrier ◽  
Barrier Integrity ◽  
Blood Brain ◽  
Blood Brain Barrier Integrity

scholarly journals Blood-brain barrier integrity in a mouse model of Alzheimer's disease with or without acute 3D6 immunotherapy

2018 ◽  
Vol 143 ◽  
pp. 1-9 ◽  
Author(s):  
Sofia Gustafsson ◽  
Tobias Gustavsson ◽  
Sahar Roshanbin ◽  
Greta Hultqvist ◽  
Margareta Hammarlund-Udenaes ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Mouse Model ◽  
Blood Brain Barrier ◽  
Brain Barrier ◽  
Barrier Integrity ◽  
Blood Brain ◽  
Model Of Alzheimer’S Disease ◽  
Blood Brain Barrier Integrity
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