Neuroprotective Effects of Bone Marrow Mononuclear Cells Therapy in a Rat Model of Ischemia Stroke

2020 ◽  
Vol 10 (3) ◽  
pp. 346-351
Author(s):  
Jianfeng Liu ◽  
Yamei Hu ◽  
Gang Li ◽  
Qianlin Zhang ◽  
Jiewen Zhang

Objective: Bone marrow mononuclear cells (BMMCs) are considered a potential approach to promote the recovery of stroke-induced neurological deficit. However, the exact mechanism of BMMCs in nerve function recovery is still unclear. Methods: Adult Sprague-Dawley (SD) rat models of cerebral ischemia-reperfusion injury was established by using thread method. BMMCs were transplanted into rat models. Neurological deficits were evaluated by Longa score scale. Immunohistochemistry assay were employed to examine the expression of GFAP and Nogo-A around the ischemic foci in the right frontal lobe. Caspase-3 activity was examined by Western Blot. Results: Rats in BMMCs group had lessened neurological deficits and cleaved Caspase-3 expression on day 21 after reper-fusion, as well as higher expression of GFAP [(37.62±2.45) vs. (27.62±1.69) and (38.00±1.85) vs. (27.25±1.83), P < 0.05] and lower expression of Nogo-A [(28.88±2.64) vs. (32.50±1.60) and (23.87±2.36) vs. (32.00±1.85), P < 0.05] on day 14 and 21 after reperfusion. Meanwhile, the expression of Nogo-A on day 21 was lower than that on day 14 after reperfusion [(23.87±2.36) vs. (28.88±2.64), P < 0.05] in BMMCs group. Conclusion: These findings suggested that BMMCs treatment could improve the functional recovery of neurological deficits in rats with MCAO, which was probably related to enhanced expression of GFAP and reduced Nogo-A expression and Caspase-3 activity in the ischemic brain tissues.

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Jing Sun ◽  
Fangyan Wang ◽  
Haixiao Li ◽  
Huiqing Zhang ◽  
Jiangtao Jin ◽  
...  

Sodium butyrate (NaB) is a dietary microbial fermentation product of fiber and serves as an important neuromodulator in the central nervous system. In this study, we further investigated that NaB attenuated cerebral ischemia/reperfusion (I/R) injury in vivo and its possible mechanisms. NaB (5, 10 mg/kg) was administered intragastrically 3 h after the onset of reperfusion in bilateral common carotid artery occlusion (BCCAO) mice. After 24 h of reperfusion, neurological deficits scores were estimated. Morphological examination was performed by electron microscopy and hematoxylin-eosin (H&E) staining. The levels of oxidative stress and inflammatory cytokines were assessed. Apoptotic neurons were measured by TUNEL; apoptosis-related protein caspase-3, Bcl-2, Bax, the phosphorylation Akt (p-Akt), and BDNF were assayed by western blot and immunohistochemistry. The results showed that 10 mg/kg NaB treatment significantly ameliorated neurological deficit and histopathology changes in cerebral I/R injury. Moreover, 10 mg/kg NaB treatment markedly restored the levels of MDA, SOD, IL-1β, TNF-α, and IL-8. 10 mg/kg NaB treatment also remarkably inhibited the apoptosis, decreasing the levels of caspase-3 and Bax and increasing the levels of Bcl-2, p-Akt, and BDNF. This study suggested that NaB exerts neuroprotective effects on cerebral I/R injury by antioxidant, anti-inflammatory, and antiapoptotic properties and BDNF-PI3K/Akt pathway is involved in antiapoptotic effect.


2017 ◽  
Vol 41 (5) ◽  
pp. 1736-1752 ◽  
Author(s):  
Felipe Mateus Ornellas ◽  
Débora Santos Ornellas ◽  
Sabrina Vargas Martini ◽  
Raquel Carvalho Castiglione ◽  
Grasiella Maria Ventura ◽  
...  

Background/Aims: We investigated the regenerative capacity of intravenous administration of bone marrow–derived mononuclear cells (BMMCs) in a rat model of bilateral renal ischemia/reperfusion (IR) injury and the involvement of inflammatory anti-inflammatory and other biological markers in this process. Methods: Rats were subjected to 1h bilateral renal pedicle clamping. BMMCs were injected i.v 1h after reperfusion and tracked by 99mTc and GFP+ BMMCs. Twenty-four hours after reperfusion, renal function and histological changes were evaluated. The mRNA (real time PCR) and protein (ELISA and immuno-staining) expression of biological markers were analyzed. Results: Renal function and structure improved after infusion of BMMCs in the IR group (IR-C). Labeled BMMCs were found in the kidneys after therapy. The expression of inflammatory and biological markers (TLR-2, TRL-4, RAGE, IL-17, HMGB-1, KIM-1) were reduced and the expression of anti-inflammatory and antioxidant markers (IL-10, Nrf2, and HO-1) were increased in IR-C animals compared with IR untreated animals (IR-S). The apoptotic index diminished and the proliferation index increased in IR-C compared with IR-S. Conclusion: The results contribute to our understanding of the role of different biological players in morphofunctional renal improvement and cytoprotection in a post-ischemic reperfusion kidney injury model subjected to cellular therapy.


2016 ◽  
Vol 31 (suppl_1) ◽  
pp. i404-i404
Author(s):  
Valery Pilotovich ◽  
Kirill Komissarov ◽  
Marina Zafranskaya ◽  
Maria Yurkevich ◽  
Daria Nizheharodava ◽  
...  

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Lei Xie ◽  
Sifei Yu ◽  
Zhenfei Wang ◽  
Kai Yang ◽  
Zhuochao Liu ◽  
...  

The role of autophagy, neuroprotective mechanisms of nicotinamide adenine dinucleotide (NAD+), and their relationship in spinal cord ischemic reperfusion injury (SCIR) was assessed. Forty-eight Sprague-Dawley rats were divided into four groups: sham, ischemia reperfusion (I/R), 10 mg/kg NAD+, and 75 mg/kg NAD+. Western blotting, immunofluorescence, and immunohistochemistry were used to assess autophagy and apoptosis. Basso, Beattie, and Bresnahan (BBB) scores were used to assess neurological function. Expression levels of Beclin-1, Atg12-Atg5, LC3B-II, cleaved caspase 3, and Bax were upregulated in the I/R group and downregulated in the 75 mg/kg NAD+group; p-mTOR, p-AKT, p62, and Bcl-2 were downregulated in the I/R group and upregulated in the 75 mg/kg NAD+group. Numbers of LC3B-positive, caspase 3-positive, Bax-positive, and TUNEL-positive cells were significantly increased in the I/R group and decreased in the 75 mg/kg NAD+group. The mean integrated option density of Bax increased and that of Nissl decreased in the I/R group, and it decreased and increased, respectively, in the 75 mg/kg NAD+group. BBB scores significantly increased in the 75 mg/kg NAD+group relative to the I/R group. No difference was observed between I/R and 10 mg/kg NAD+groups for these indicators. Therefore, excessive and sustained autophagy aggravates SCIR; administration of NAD+alleviates injury.


2017 ◽  
Vol 45 (01) ◽  
pp. 53-66 ◽  
Author(s):  
Mingge Ding ◽  
Yin Wang ◽  
Di Sun ◽  
Zhenhua Liu ◽  
Jie Wang ◽  
...  

Punicalagin (PUN), a major bioactive component in pomegranate juice, has been proven to exert neuroprotective effects against cerebral ischemia/reperfusion (I/R) insult via anti-oxidant properties. This study aims to investigate whether PUN provides cardioprotection against myocardial I/R (MI/R) injury and the underlying mechanisms. PUN (30[Formula: see text]mg/kg/d) or vehicle was intragastrically administered to Sprague-Dawley rats for one week before the operation. MI/R was induced by ligating the left anterior descending coronary artery for 30[Formula: see text]min and subsequent reperfusion for 3[Formula: see text]h. PUN pretreatment conferred cardioprotective effects against MI/R injury by improving cardiac function, limiting infarct size, reducing serum creatine kinase-MB and lactate dehydrogenase activities, and suppressing cardiomyocyte apoptosis. Moreover, PUN pretreatment inhibited I/R-induced myocardial oxidative stress as evidenced by decreased generation of superoxide content and malonaldialdehyde formation and increased antioxidant capability. Furthermore, PUN pretreatment increased adenosine monophosphate-activated protein kinase (AMPK) and acetyl-CoA carboxylase (ACC) phosphorylation in I/R hearts. AMPK inhibitor compound c inhibited PUN-enhanced AMPK phosphorylation, and blunted PUN-mediated anti-oxidative effects and cardioprotection. These results indicate for the first time that PUN pretreatment protect against I/R-induced oxidative stress and myocardial injury via activation of AMPK.


Sign in / Sign up

Export Citation Format

Share Document