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https://www.readbyqxmd.com/read/28549860/crude-terpene-glycoside-component-from-radix-paeoniae-rubra-protects-against-isoproterenol-induced-myocardial-ischemic-injury-via-activation-of-the-pi3k-akt-mtor-signaling-pathway
#1
Zhongcheng Ke, Gang Wang, Lei Yang, Huihui Qiu, Hao Wu, Mei Du, Juan Chen, Jie Song, Xiaobin Jia, Liang Feng
ETHNOPHARMACOLOGICAL RELEVANCE: Radix paeoniae rubra, also known as chishao (CS), is a frequently used traditional Chinese medicine that can promote blood circulation to remove blood stasis. It has been widely used for the prevention and treatment of cardiovascular diseases in China. Although terpene glycoside (TG), the major component in CS, has been shown to possess cardioprotective properties, the mechanism underlying CS-TG's preventive effect against myocardial ischemia injury is unknown...
May 23, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28548285/neonatal-hypoxia-ischemia-in-rat-increases-doublecortin-concentration-in-the-cerebrospinal-fluid
#2
Catherine Brégère, Urs Fisch, Martin H Sailer, Wolfgang S Lieb, Laurie Chicha, Fabienne Goepfert, Thomas Kremer, Raphael Guzman
Doublecortin (DCX) is a microtubule-associated protein widely used as an indicator of neurogenesis in immunohistochemical analyses of the postmortem adult brain. A recent study reported that DCX can be quantified in the cerebrospinal fluid (CSF) from healthy rats between postnatal day 0 (P0) and P30. However, it is currently unclear whether the concentration of DCX in the CSF (CSF-DCX) may represent a measure of endogenous neurogenesis. To address this question, the present study examined the impact of a neonatal hypoxic-ischemic (HI) brain injury, known to induce neurogenesis, on CSF-DCX...
May 26, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28545277/-effect-of-the-ischemic-post-conditioning-on-the-prevention-of-the-cardio-renal-damage-in-patients-with-acute-st-segment-elevation-myocardial-infarction-after-primary-percutaneous-coronary-intervention
#3
Y Y Wang, T Li, Y W Liu, B J Liu, X M Hu, Y Wang, W Q Gao, P Wu, L Huang, X Li, W J Peng, M Ning
Objective: To evaluate the effect of the ischemic post-conditioning (IPC) on the prevention of the cardio-renal damage in patients with acute ST-segment elevation myocardial infarction (STEMI) after primary percutaneous coronary intervention (PPCI). Methods: A total of 251 consecutive STEMI patients underwent PPCI in the heart center of Tianjin Third Central Hospital from January 2012 to June 2014 were enrolled in this prospective, randomized, control, single-blinded, clinical registry study. Patients were randomly divided into IPC group (123 cases) and control group (128 cases) with random number table...
April 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28544853/microrna-34a-protect-myocardial-cells-against-ischemia-reperfusion-injury-through-inhibiting-autophagy-via-regulating-tnf%C3%AE-expression
#4
Haifeng Shao, Lili Yang, Li Wang, Bozan Tang, Jian Wang, Qiang Li
BACKGROUND: Ischemia/reperfusion (I/R) accompanying with the blood supply restored after myocardial infarction. Myocardial I/R injury relieves when autophagy decreased. MicroRNA-34a(miR-34a) regulate autophagy in renal I/R injury model. But whether it can affect cardiac I/R injury remains studying. This study investigated how miR-34a in protecting myocardial cells against I/R injury through inhibit autophagy via regulating tumor necrosis factor α (TNFα) . METHODS: Constructed the I/R model in vivo with Langendorff; treated Neonatal Rat cardiomyocyte to make H/R injury model in vitro with hypoxia/reoxygenation (H/R) method...
May 25, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28544535/%C3%AE-cryptoxanthin-exerts-greater-cardioprotective-effects-on-cardiac-ischemia-reperfusion-injury-than-astaxanthin-by-attenuating-mitochondrial-dysfunction-in-mice
#5
Wanpitak Pongkan, Osamu Takatori, Yinhua Ni, Liang Xu, Naoto Nagata, Siriporn C Chattipakorn, Soichiro Usui, Shuichi Kaneko, Masayuki Takamura, Minoru Sugiura, Nipon Chattipakorn, Tsuguhito Ota
SCOPE: β-Cryptoxanthin and astaxanthin are antioxidant carotenoid pigments that inhibit lipid peroxidation as potently as vitamin E. We hypothesized that acute treatment with β-cryptoxanthin and astaxanthin causes similar reductions in the sizes of cardiac infarcts caused by ischemia-reperfusion (I/R) injury by attenuating oxidative stress and cardiac mitochondrial dysfunction. METHODS AND RESULTS: C57BL/6 mice (n = 36) were randomized to receive vehicle, β-cryptoxanthin, astaxanthin or vitamin E at 50 mg/kg by gavage feeding prior to I/R injury...
May 20, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28544034/knock-down-of-farnesyl-pyrophosphate-synthase-protects-heart-derived-h9c2-cells-against-hypoxia-reoxygenation-induced-injury
#6
Dong-Pu Dai, Huan-Dong Wu, Jian Yang, Shi-Zhen Shen, Chen-Ze Zhao, Jie Ding, Shen-Jiang Hu
Farnesyl pyrophosphate synthase (FPPS) is a key enzyme in the mevalonate pathway. Our previous studies have indicated that cardiac-specific overexpression of FPPS induces cardiac hypertrophy and dysfunction in mice, and inhibition of FPPS prevents angiotensin (Ang) II-induced hypertrophy in cardiomyocytes. However, the role for FPPS in myocardial ischemia/reperfusion (MIR) injury is still not clear. The objective of this work was to investigate the effect of FPPS on MIR injury in H9c2 cells which were subjected to hypoxia/reoxygenation (HR) to mimic MIR...
May 24, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28543181/loss-of-l-selectin-guided-cd8-but-not-cd4-cells-protects-against-ischemia-reperfusion-injury-in-a-steatotic-liver
#7
Vasantha L Kolachala, Sirish Palle, Ming Shen, Alayna Feng, Dmitry Shayakhmetov, Nitika A Gupta
BACKGROUND & AIMS: Steatotic liver responds with increased hepatocellular injury when exposed to an ischemic-reperfusion insult. Increasing evidence supports the role of immune cells as key mediators of this injury in a normal (lean) state, but data about their role in a steatotic liver are practically non-existent. The objective of the current study was to delineate contribution of specific phenotypes of T cells and adhesion molecules in exacerbated cell death in steatotic liver injury...
May 20, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28542588/inhibition-of-hmgb1-protects-the-retina-from-ischemia-reperfusion-as-well-as-reduces-insulin-resistance-proteins
#8
Li Liu, Youde Jiang, Jena J Steinle
The role of inflammation in diabetic retinal amage is well accepted. While a number of cytokines and inflammatory mediators are responsible for these changes, upstream regulators are less well studied. Additionally, the role for these upstream mediators in retinal health is unclear. In this study, we hypothesized that inhibition of high mobility group box 1 (HMGB1) could restore normal insulin signaling in retinal endothelial cells (REC) grown in high glucose, as well as protect the retina against ischemia/reperfusion (I/R)-induced retinal damage...
2017: PloS One
https://www.readbyqxmd.com/read/28539382/il233-a-novel-il-2-and-il-33-hybrid-cytokine-ameliorates-renal-injury
#9
Marta E Stremska, Sheethal Jose, Vikram Sabapathy, Liping Huang, Amandeep Bajwa, Gilbert R Kinsey, Poonam R Sharma, Saleh Mohammad, Diane L Rosin, Mark D Okusa, Rahul Sharma
CD4(+)Foxp3(+) regulatory T cells (Tregs) protect the kidney during AKI. We previously found that IL-2, which is critical for Treg homeostasis, upregulates the IL-33 receptor (ST2) on CD4(+) T cells, thus we hypothesized that IL-2 and IL-33 cooperate to enhance Treg function. We found that a major subset of Tregs in mice express ST2, and coinjection of IL-2 and IL-33 increased the number of Tregs in lymphoid organs and protected mice from ischemia-reperfusion injury (IRI) more efficiently than either cytokine alone...
May 24, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28539353/crf-and-urocortin-3-protect-the-heart-from-hypoxia-reoxygenation-induced-apoptosis-in-zebrafish
#10
Tegan A Williams, Jillian C Bergstrome, Juliana Scott, Nicholas J Bernier
Fish routinely experience environmental hypoxia and have evolved various strategies to tolerate this challenge. Given the key role of the corticotropin-releasing factor (CRF) system in coordinating the response to stressors and its cardioprotective actions against ischemia in mammals, we sought to characterize the cardiac CRF system in zebrafish and its role in hypoxia tolerance. We established that all genes of the CRF system, the ligands CRFa, CRFb, urotensin 1 (UTS1) and urocortin 3 (UCN3), the two receptor subtypes (CRFR1 and CRFR2), and the binding protein (CRFBP) are expressed in the heart of zebrafish: crfr1 > crfr2 = crfbp > crfa > ucn3 > crfb > uts1...
May 24, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28538193/ethyl-pyruvate-protects-pc12-cells-from-oxygen-glucose-deprivation-a-potential-role-in-ischemic-cerebrovascular-disease
#11
Wenbo Li, Jiyu Lou, Liping Wei, Hongying Bai, Yaohui Zhang, Yuqing He
The protective potential of ethyl pyruvate (EP) on neuron has been investigated previously. This study was intended to investigate the effects of EP on the severity of oxygen-glucose deprivation (OGD)-induced injury in neural-like PC12 cells. PC12 cells were exposed to OGD condition with or without EP treatment. Then, cell viability, apoptosis, and the expressions of neurotrophic factors were detected. Further, Sprague-Dawley rats were intravenously administered with 5mg/kg EP for 14 days post-middle cerebral artery occlusion (MCAO)...
May 21, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28537507/electroacupuncture-alleviated-brain-damages-through-mir-191a-5p-targeting-neuronal-calcium-sensor-1-after-ischemic-stroke
#12
Heng Zhou, Ceng Yang, Fuhai Bai, Zhi Ma, Jingyi Wang, Feng Wang, Feng Li, Qiang Wang, Lize Xiong
Electroacupuncture (EA) administration before or after cerebral ischemia has been shown to afford protection against ischemic injury. However, the underlying mechanism of EA-mediated protection is still unclear. Functional microRNAs (miRNAs) are believed to play important roles in neuroprotection and synaptic plasticity during and after ischemia. In a previous study, we identified 20 miRNAs that are expressed in the penumbra and are significantly changed after EA treatment. Here, we used bioinformatics analysis to predict the biological functions and gene-networks of these miRNAs...
May 24, 2017: Rejuvenation Research
https://www.readbyqxmd.com/read/28535981/protective-effect-of-remote-limb-post-conditioning-via-upregulation-of-heme-oxygenase-1-bdnf-pathway-in-rat-model-of-cerebral-ischemic-reperfusion-injury
#13
Sruthi Ramagiri, Rajeev Taliyan
AIM: Remote ischemic Post Conditioning (RIPOC) has shown to be neuroprotective against cerebral Ischemic Reperfusion (I/R) injury. However, the RIPOC protection against I/R injury induced cognitive abnormalities still remains elusive. Abundant evidence from earlier studies highlighted the role of heme oxygenase-1 (HO-1) in neuronal survival in various neurodegenerative disorders. Thus, in the present study, we investigated the possible contribution of HO-1 in RIPOC mediated neuroprotection against cerebral I/R injury and associated cognitive deficits...
May 20, 2017: Brain Research
https://www.readbyqxmd.com/read/28535942/gallic-acid-increases-atrial-natriuretic-peptide-secretion-and-mechanical-dynamics-through-activation-of-pkc
#14
Xia Liu, Ying Zhang, Lan Hong, Chun-Ji Han, Bo Zhang, Shuai Zhou, Cheng-Zhe Wu, Li-Ping Liu, Xun Cui
AIMS: Gallic acid (GA) protects against myocardial ischemia-reperfusion (I/R) injury, prevents cardiac hypertrophy and fibrosis, and has anti-inflammatory activity in the heart. However, its effects in regulating atrial natriuretic peptide (ANP) secretion are unknown. The aim of this study was to determine the function of GA in regulating ANP secretion and atrial dynamics in rat atria. KEY FINDINGS: GA (0.01, 0.05, and 0.1μmol/L) significantly increased atrial ANP secretion and induced positive inotropy dose-dependently...
May 20, 2017: Life Sciences
https://www.readbyqxmd.com/read/28534982/pre%C3%A2-treatment-with-chrysanthemum%C3%A2-indicum-linn%C3%A3-extract-protects-pyramidal-neurons-from-transient-cerebral-ischemia-via-increasing-antioxidants-in-the-gerbil-hippocampal-ca1-region
#15
In Hye Kim, Tae-Kyeong Lee, Jeong Hwi Cho, Jae-Chul Lee, Joon Ha Park, Ji Hyeon Ahn, Bich-Na Shin, Bai Hui Chen, Hyun-Jin Tae, Yang Hee Kim, Jong-Dai Kim, Young-Myeong Kim, Moo-Ho Won, Il Jun Kang
Chrysanthemum indicum Linné extract (CIL) is used in herbal medicine in East Asia. In the present study, gerbils were orally pre‑treated with CIL, and changes of antioxidant enzymes including superoxide dismutase (SOD) 1 and SOD2, catalase (CAT) and glutathione peroxidase (GPX) in the hippocampal CA1 region following 5 min of transient cerebral ischemia were investigated and the neuroprotective effect of CIL in the ischemic CA1 region was examined. SOD1, SOD2, CAT and GPX immunoreactivities were observed in the pyramidal cells of the CA1 region and their immunoreactivities were gradually decreased following ischemia‑reperfusion and barely detectable at 5 days post‑ischemia...
May 17, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28534140/protective-effects-of-neural-crest-derived-stem-cell-conditioned-media-against-ischemia-reperfusion-induced-lung-injury-in-rats
#16
Chung-Kan Peng, Shu-Yu Wu, Shih-En Tang, Min-Hui Li, Shih-Shiuan Lin, Shi-Jye Chu, Kun-Lun Huang
Current treatments for ischemia-reperfusion (IR)-induced acute lung injury are limited. Mesenchymal stem cell-conditioned medium (CM) has been reported to attenuate lung injury. Neural crest stem cells (NCSCs), a type of multipotent stem cells, are more easily obtained than mesenchymal stem cells. We hypothesize that NCSC-CM has anti-inflammatory properties that could protect against IR-induced lung injury in rats. In this study, NCSC-CM was derived from rat NCSCs. Typical acute lung injury was induced by 30-min ischemia followed by 90-min reperfusion in adult male Sprague-Dawley rats...
May 23, 2017: Inflammation
https://www.readbyqxmd.com/read/28534118/exercise-induced-circulating-extracellular-vesicles-protect-against-cardiac-ischemia-reperfusion-injury
#17
Yihua Bei, Tianzhao Xu, Dongchao Lv, Pujiao Yu, Jiahong Xu, Lin Che, Avash Das, John Tigges, Vassilios Toxavidis, Ionita Ghiran, Ravi Shah, Yongqin Li, Yuhui Zhang, Saumya Das, Junjie Xiao
Extracellular vesicles (EVs) serve an important function as mediators of intercellular communication. Exercise is protective for the heart, although the signaling mechanisms that mediate this cardioprotection have not been fully elucidated. Here using nano-flow cytometry, we found a rapid increase in plasma EVs in human subjects undergoing exercise stress testing. We subsequently identified that serum EVs were increased by ~1.85-fold in mice after 3-week swimming. Intramyocardial injection of equivalent quantities of EVs from exercised mice and non-exercised controls provided similar protective effects against acute ischemia/reperfusion (I/R) injury in mice...
July 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28533269/pharmacological-enrollment-of-aldehyde-dehydrogenase-modulators-to-assist-treating-ischemia-reperfusion-induced-intestinal-injury-is-there-a-gap-to-be-bridged
#18
Laurent Dollé
This commentary highlights the research presented by Zhu et al. [1]. In this issue of the Clinical Science, the authors evaluated the protective effect of Alda-1 (a novel class of small molecule aldehyde dehydrogenase (ALDH2) activators) in the intestinal ischemia reperfusion (IR) injury. Remarkably, enhancing the ADLH2 activity by the use of Alda-1 can ameliorate several deleterious effects related to aldehydes, and may provide a better protection against an injury preestablished by IR. Together, an innovative metabolic strategy for treating patients with IR injury could be the use of ALDH modulators in a near future...
June 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28532702/trimetazidine-in-the-prevention-of-contrast-induced-nephropathy-in-chronic-kidney-disease
#19
Tarek A Ibrahim, Ramzy H El-Mawardy, Ahmed S El-Serafy, Ehab M El-Fekky
BACKGROUND: Contrast induced nephropathy (CIN) may be defined as Acute Renal Failure (ARF) that occurs within 24-72h of exposure to intra-venous or intra-arterial iodinated contrast media that cannot be attributed to other causes. CIN occurs in up to 5% of hospitalized patients with normal renal function prior to injection of contrast media. It occurs more frequently in patients with renal impairment particularly if associated with diabetic nephropathy. Among all procedures utilizing contrast agents for either diagnostic or therapeutic purposes, coronary angiography and percutaneous coronary interventions are associated with the highest rates of CIN...
February 10, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28528966/nampt-inhibitor-protects-ischemic-neuronal-injury-in-rat-brain-via-anti-neuroinflammation
#20
Chen-Xiang Chen, Jing Huang, Ga-Qi Tu, Jia-Tong Lu, Xian Xie, Bing Zhao, Ming Wu, Qiao-Juan Shi, San-Hua Fang, Er-Qing Wei, Wei-Ping Zhang, Yun-Bi Lu
Nicotinamide phosphoribosyltransferase (NAMPT) is an important neuroprotective factor in cerebral ischemia, and it has been reported that NAMPT inhibitors can aggravate neuronal injury in the acute phase. However, because it is a cytokine, NAMPT participates in many inflammatory diseases in the peripheral system, and its inhibitors have therapeutic effects. Following cerebral ischemia, the peripheral and resident inflammatory and immune cells produce many pro-inflammatory mediators in the ischemic area, which induce neuroinflammation and impair the brain...
May 18, 2017: Neuroscience
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