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https://www.readbyqxmd.com/read/29792388/cerebral-ischaemia-reperfusion-injury-could-be-managed-by-using-tramadol
#1
Ibrahim Akkurt, Cansel Cetin, Ahmet Melih Erdogan, Gungor Cagdas Dincel, Aslı Fahriye Ceylan, Ucler Kisa, Jonathan Oppong, Adem Akkurt, Mustafa Ogden, Bulent Bakar
OBJECTIVES: No valid treatment modality that will repair stroke damage and provide neurological recovery has yet been identified in literature. Studies demonstrated that adequate quality of life could be provided if post-stroke pain could be treated sufficiently and timely. Besides its pain relief effects, tramadol has oedema-reducing and anti-inflammatory properties. With these in mind, this study investigated the influence of tramadol in acute and/or chronic ischaemia/reperfusion (I/R) injury...
May 24, 2018: Neurological Research
https://www.readbyqxmd.com/read/29788103/post-ischaemic-administration-of-the-murine-canakinumab-surrogate-antibody-improves-outcome-in-experimental-stroke
#2
Luca Liberale, Candela Diaz-Cañestro, Nicole R Bonetti, Francesco Paneni, Alexander Akhmedov, Jürg H Beer, Fabrizio Montecucco, Thomas F Lüscher, Giovanni G Camici
Aims: The CANTOS trial underscored the efficacy of selective antibody-based interleukin (IL)-1β inhibition with Canakinumab in secondary prevention of cardiovascular events. Despite the success of the trial, incidence of stroke was not reduced likely due to the low number of events and the relatively young age of patients enrolled. Given the established role of IL-1β in stroke, we tested the efficacy of the murine Canakinumab-equivalent antibody in a mouse model of ischaemic stroke...
May 16, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29777314/improved-recovery-from-limb-ischaemia-by-delivery-of-an-affinity-isolated-heparan-sulphate
#3
Selina Poon, Xiaohua Lu, Raymond A A Smith, Pei Ho, Kishore Bhakoo, Victor Nurcombe, Simon M Cool
Peripheral arterial disease is a major cause of limb loss and its prevalence is increasing worldwide. As most standard-of-care therapies yield only unsatisfactory outcomes, more options are needed. Recent cell- and molecular-based therapies that have aimed to modulate vascular endothelial growth factor-165 (VEGF165 ) levels have not yet been approved for clinical use due to their uncertain side effects. We have previously reported a heparan sulphate (termed HS7) tuned to avidly bind VEGF165 . Here, we investigated the ability of HS7 to promote vascular recovery in a murine hindlimb vascular ischaemia model...
May 18, 2018: Angiogenesis
https://www.readbyqxmd.com/read/29773452/beneficial-effects-of-rolipram-a-phosphodiesterase-4-specific-inhibitor-on-testicular-torsion-detorsion-injury-in-rats
#4
Deniz Abat, Yıldırım Bayazıt, Arbil Açıkalın, Kenan Dağlıoğlu, Ebru Dündar Yenilmez, Adem Altunkol, Şeyda Erdoğan, Abdullah Tuli
INTRODUCTION: The aim of the study is to investigate the effect of Rolipram, a selective phosphodiesterase 4 inhibitor, on testicular torsion - detorsion injury. METHODS: Sixty young male rats were divided into five groups. In each group, the right testes of six rats were removed four hours after detorsion for biochemical analysis, and the right testes of the remaining six rats were removed 24 h after detorsion for pathological analysis. In group 1 (sham-operated) right orchiectomy was performed without torsion, and right testes were sent to the laboratory for biochemical and pathologic analyses...
April 14, 2018: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29772453/the-roles-of-cypa-and-cd147-in-cardiac-remodelling
#5
REVIEW
Hongyan Su, Yi Yang
Cyclophilin A (CyPA), an abundantly expressed protein belonging to the immunophilin family, is involved in a variety of physiological and pathological activities together with its extracellular receptor, CD147. Many studies have provided compelling evidence supporting critical roles of CyPA in immune and infectious diseases and malignant tumours. Recent studies have revealed that both CyPA and CD147 strongly promote cardiovascular inflammation, myocardial ischaemia-reperfusion injury, and myocardial remodelling processes...
May 14, 2018: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29770471/protective-effects-of-the-hydroalcoholic-extract-of-fumaria-parviflora-on-testicular-injury-induced-by-torsion-detorsion-in-adult-rats
#6
M Shokoohi, H Shoorei, M Soltani, S-H Abtahi-Eivari, R Salimnejad, M Moghimian
This study was designed to determine the effects of daily oral administration (250 mg/kg) of the hydroalcoholic extract of Fumaria parviflora (FP) for 14 days on the sperm parameters, oxidative stress parameters, serum testosterone levels, expression of Bax and Bcl-2 genes, and apoptosis index of germ cells after testicular torsion-detorsion (ischaemia-reperfusion, IR) injury model in rats. Twenty-eight adult male Wistar rats were divided randomly into four groups of seven each: sham operation, torsion-detorsion (TD), TD plus the hydroalcoholic extract FP (TDFP) and only FP without TD application (FP)...
May 16, 2018: Andrologia
https://www.readbyqxmd.com/read/29766323/cgmp-at-the-centre-of-attention-emerging-strategies-for-activating-the-cardioprotective-pkg-pathway
#7
REVIEW
Min Park, Peter Sandner, Thomas Krieg
The nitric oxide (NO)-protein kinase G (PKG) pathway has been known for some time to be an important target for cardioprotection against ischaemia/reperfusion injury and heart failure. While many approaches for reducing infarct size in patients have failed in the past, the advent of novel drugs that modulate cGMP and its downstream targets shows very promising results in recent preclinical and clinical studies. Here, we review main aspects of the NO-PKG pathway in light of recent drug development and summarise potential cardioprotective strategies in which cGMP is the main player...
May 15, 2018: Basic Research in Cardiology
https://www.readbyqxmd.com/read/29732997/hydroxysafflor-yellow-a-reprograms-tlr9-signalling-pathway-in-ischaemic-cortex-after-cerebral-ischaemia-and-reperfusion
#8
Zhe Gong, Jingrui Pan, Xiangpen Li, Hongxuan Wang, Lei He, Ying Peng
Hydroxysafflor yellow A (HSYA) was reported to suppress inflammation in ischaemic microglia. However, the mechanism through which HSYA inhibits inflammation caused by cerebral ischaemia and reperfusion injury remains unknown. Here, we have mimicked acute cerebral ischaemia and reperfusion injury by subjecting male Sprague-Dawley (SD) rats to transient middle cerebral artery occlusion for 90 minutes and have demonstrated that toll-like receptor 9 (TLR9) was upregulated from day 3 after reperfusion, accompanied by the persistent activation of the pro-inflammatory NF-κB pathway from 6 hours to day 7...
May 1, 2018: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/29730286/vaspin-alleviates-myocardial-ischaemia-reperfusion-injury-via-activating-autophagic-flux-and-restoring-lysosomal-function
#9
Feihong Yang, Li Xue, Ziqi Han, Feng Xu, Shengchuan Cao, Shuai Dai, Baoshan Liu, Qiuhuan Yuan, Zheng Wang, Ping Guo, Yuguo Chen
Visceral adipose tissue-derived serine protease inhibitor (vaspin), as a secretory adipokine, was reported to exert a protective role on insulin resistance. Recent studies showed that serum vaspin level was downregulated in patients with coronary artery disease. However, whether vaspin exerted specific effects on myocardial injury remains unknown. In this study, we determined to explore the role of vaspin overexpression in myocardial ischaemia/reperfusion (I/R) injury and the underlying mechanisms. Our results showed that the systemic delivery of adeno-associated virus-vaspin to mice reduced myocardial infarct size and apoptosis, and improved cardiac function after reperfusion, accompanied with upregulated autophagic flux and restored lysosomal function in the ischaemic heart...
May 3, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29724623/mechanism-of-interleukin-1-receptor-antagonist-protection-against-myocardial-ischaemia-reperfusion-induced-injury
#10
Wenhao Qian, Changyun Zhao, Dongye Li, Rui Dai
BACKGROUND: New therapeutic targets are required for ischaemic heart disease; our study was designed to assess the theoretical foundation and experimental basis underlying the use of a new anticytokine agent, interleukin-1 receptor antagonist (IL-1ra), in this setting. AIM: To investigate the cardioprotective properties of IL-1ra in terms of inhibition of apoptosis and improvement in systolic and diastolic functions of ischaemia/reperfusion (I/R)-injured cardiomyocytes, via a reduction in the inositol 1,4,5-trisphosphate (IP3) receptor-mediated Ca2+ overload induced by myocardial I/R injury...
April 30, 2018: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/29724533/targeting-phosphodiesterase-5-by-vardenafil-improves-vascular-graft-function
#11
Gábor Veres, Martin Hagenhoff, Harald Schmidt, Tamás Radovits, Sivakkanan Loganathan, Yang Bai, Sevil Korkmaz-Icöz, Paige Brlecic, Alex Ali Sayour, Matthias Karck, Gábor Szabó
OBJECTIVES: Ischaemia reperfusion (IR) injury occurs during vascular graft harvesting and implantation during vascular/cardiac surgery. Elevated intracellular cyclic guanosine monophosphate (cGMP) levels contribute to an effective endothelial protection in different pathophysiological conditions. The hypothesis that the phosphodiesterase-5 inhibitor vardenafil would protect vascular grafts against IR injury by upregulating the nitric oxide-cGMP pathway in the vessel wall of the bypass graft was investigated...
May 1, 2018: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29713782/gd-eob-dtpa-enhanced-mri-for-quantitative-assessment-of-liver-organ-damage-after-partial-hepatic-ischaemia-reperfusion-injury-correlation-with-histology-and-serum-biomarkers-of-liver-cell-injury
#12
Tobias Getzin, Faikah Gueler, Björn Hartleben, Marcel Gutberlet, Anja Thorenz, Rongjun Chen, Martin Meier, Jan Hinrich Bräsen, Thorsten Derlin, Dagmar Hartung, Hannah A S Lang, Hermann Haller, Frank Wacker, Song Rong, Katja Hueper
OBJECTIVE: To evaluate Gd-EOB-DTPA-enhanced MRI for quantitative assessment of liver organ damage after hepatic ischaemia reperfusion injury (IRI) in mice. METHODS: Partial hepatic IRI was induced in C57Bl/6 mice (n = 31) for 35, 45, 60 and 90 min. Gd-EOB-DTPA-enhanced MRI was performed 1 day after surgery using a 3D-FLASH sequence. A subgroup of n = 9 animals with 60 min IRI underwent follow-up with MRI and histology 7 days after IRI. The total liver volume was determined by manual segmentation of the entire liver...
April 30, 2018: European Radiology
https://www.readbyqxmd.com/read/29710487/protective-effect-and-mechanism-of-ginsenoside-rg1-in-cerebral-ischaemia-reperfusion-injury-in-mice
#13
Le Wang, Hong Zhao, Zhen-Zhen Zhai, Li-Xin Qu
BACKGROUND: Ginsenoside Rg1 is regarded as one of main bioactive compounds responsible for pharmaceutical actions of ginseng with little toxicity and has been shown to have possibly neuroprotective effects. However, the mechanism of its neuroprotection for acute ischemic stroke is still elusive. The purpose of present study is thus to assess the neuroprotective effects of the ginsenoside Rg1 against neurological injury in a mice model of cerebral ischemia/reperfusion (I/R), and then to explore the mechanisms for these neuroprotective effects...
March 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29707171/study-of-respiratory-chain-dysfunction-in-heart-disease
#14
REVIEW
Seyyed Hossein Hassanpour, Mohammad Amin Dehghani, Seyyedeh Zeinab Karami
The relentlessly beating heart has the greatest oxygen consumption of any organ in the body at rest reflecting its huge metabolic turnover and energetic demands. The vast majority of its energy is produced and cycled in form of ATP which stems mainly from oxidative phosphorylation occurring at the respiratory chain in the mitochondria. A part from energy production, the respiratory chain is also the main source of reactive oxygen species and plays a pivotal role in the regulation of oxidative stress. Dysfunction of the respiratory chain is therefore found in most common heart conditions...
2018: Journal of Cardiovascular and Thoracic Research
https://www.readbyqxmd.com/read/29679638/inhibition-of-immunoproteasome-promotes-angiogenesis-via-enhancing-hypoxia-inducible-factor-1%C3%AE-abundance-in-rats-following-focal-cerebral-ischaemia
#15
Xingyong Chen, Xu Zhang, Ting Chen, Xiulong Jiang, Xiaosong Wang, Huixin Lei, Yinzhou Wang
Angiogenesis after ischemic stroke contributes to the restoration of blood supply in the ischemic zone. Strategies to improve angiogenesis may facilitate the function recovery after stroke. Growing evidence shows that proteasome inhibitors enhance angioneurogenesis and induces a long-term neuroprotection after cerebral ischemia in rodents' models. We have previously reported that inhibition of the immunoproteasome subunit low molecular mass peptide 2 (LMP2) offers a strong neuroprotection in ischemic stroke rats...
April 18, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29672718/mineralocorticoid-receptor-antagonists-in-kidney-transplantation-time-to-consider
#16
Sophie Girerd, Frédéric Jaisser
Although patient survival is significantly improved by kidney transplantation (KT) in comparison with dialysis, it remains significantly lower than that observed in the general population. Graft function is one of the major determinants of patient survival after KT. Mineralocorticoid receptor antagonists (MRAs) could be of particular interest in this population to improve graft function and treat or prevent cardiovascular (CV) complications. In KT, ischaemia/reperfusion injury is a major factor involved in delayed graft function, which is often associated with inferior long-term graft survival...
April 17, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29671939/synthetic-cpg-oligonucleotides-induce-a-genetic-profile-ameliorating-murine-myocardial-i-r-injury
#17
Tobias Hilbert, Paul Markowski, Stilla Frede, Olaf Boehm, Pascal Knuefermann, Georg Baumgarten, Andreas Hoeft, Sven Klaschik
We previously demonstrated that pre-conditioning with CpG oligonucleotide (ODN) 1668 induces quick up-regulation of gene expression 3 hours post-murine myocardial ischaemia/reperfusion (I/R) injury, terminating inflammatory processes that sustain I/R injury. Now, performing comprehensive microarray and biocomputational analyses, we sought to further enlighten the "black box" beyond these first 3 hours. C57BL/6 mice were pretreated with either CpG 1668 or with control ODN 1612, respectively. Sixteen hours later, myocardial ischaemia was induced for 1 hour in a closed-chest model, followed by reperfusion for 24 hours...
April 19, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29666943/the-gtn-patch-a-simple-and-effective-new-approach-to-cardioprotection
#18
Derek M Yellon, Zhenhe He, Rayomand Khambata, Amrita Ahluwalia, Sean M Davidson
There remains a significant un-met need to reduce the extent of myocardial injury caused by ischaemia and reperfusion injury in patients experiencing an ST-elevation MI. Although nitric oxide is central to many cardioprotective strategies currently undergoing investigation, cardioprotection from the delivery of nitrates/nitrites has been inconsistently observed. The route of administration appears to be a critical variable. The glyceryl trinitrate (GTN) patch is commonly used as a simple and practical means of delivering nitric oxide to patients with ischaemic heart disease, but whether acute cardioprotection can be achieved by application of a GTN patch has not been investigated before...
April 17, 2018: Basic Research in Cardiology
https://www.readbyqxmd.com/read/29660909/the-effect-of-trimetazidine-in-reducing-the-ischemia-reperfusion-injury-in-rat-epigastric-skin-flaps
#19
Laura Petrovics, Tibor Nagy, Peter Hardi, Laura Bognar, Gabor Pavlovics, Gyorgy Tizedes, Ildiko Takacs, Gabor Jancso
BACKGROUND: Ischemia-reperfusion injury may lead to insufficient microcirculation and results in partial flap loss during the free flap surgeries. OBJECTIVE: This study aimed to investigate the effect of trimetazidine (TMZ) on oxidative stress, inflammation and histopathological changes, using the epigastric skin flap model in rats. METHODS: 40 male Wistar rats were used, that were divided into four groups. Control group, non-treated ischemic (I/R)-group and two trimetazidine treated groups (preischemically, postischemically) were established...
April 13, 2018: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29660027/the-6-hydroxychromanol-derivative-sul-109-ameliorates-renal-injury-after-deep-hypothermia-and-rewarming-in-rats
#20
Pieter C Vogelaar, Maurits Roorda, Edwin L de Vrij, Martin C Houwertjes, Maaike Goris, Hjalmar Bouma, Adrianus C van der Graaf, Guido Krenning, Robert H Henning
Background: Mitochondrial dysfunction plays an important role in kidney damage in various pathologies, including acute and chronic kidney injury and diabetic nephropathy. In addition to the well-studied ischaemia/reperfusion (I/R) injury, hypothermia/rewarming (H/R) also inflicts acute kidney injury. Substituted 6-hydroxychromanols are a novel class of mitochondrial medicines that ameliorate mitochondrial oxidative stress and protect the mitochondrial network. To identify a novel 6-hydroxychromanol that protects mitochondrial structure and function in the kidney during H/R, we screened multiple compounds in vitro and subsequently assessed the efficacy of the 6-hydroxychromanol derivatives SUL-109 and SUL-121 in vivo to protect against kidney injury after H/R in rats...
April 11, 2018: Nephrology, Dialysis, Transplantation
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