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https://www.readbyqxmd.com/read/28644439/activation-of-cell-surface-grp78-decreases-endoplasmic-reticulum-stress-and-neuronal-death
#1
Morgane Louessard, Isabelle Bardou, Eloïse Lemarchand, Audrey M Thiebaut, Jérôme Parcq, Jérôme Leprince, Anne Terrisse, Valérie Carraro, Pierre Fafournoux, Alain Bruhat, Cyrille Orset, Denis Vivien, Carine Ali, Benoit D Roussel
The unfolded protein response (UPR) is an endoplasmic reticulum (ER) -related stress conserved pathway that aims to protect cells from being overwhelmed. However, when prolonged, UPR activation converts to a death signal, which relies on its PERK-eIF2α branch. Overactivation of the UPR has been implicated in many neurological diseases, including cerebral ischaemia. Here, by using an in vivo thromboembolic model of stroke on transgenic ER stress-reporter mice and neuronal in vitro models of ischaemia, we demonstrate that ischaemic stress leads to the deleterious activation of the PERK branch of the UPR...
June 23, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28641387/imaging-superior-mesenteric-vein-smv-sign-bowel-ischaemia
#2
Hiroki Matsuura, Hironori Kurokawa
No abstract text is available yet for this article.
June 21, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28641323/ischaemia-reperfusion-injury-and-hyperbaric-oxygen-pathways-a-review-of-cellular-mechanisms
#3
REVIEW
Ashish Francis, Richard Baynosa
Ischaemia-induced tissue injury has wide-ranging clinical implications including myocardial infarction, stroke, compartment syndrome, ischaemic renal failure and replantation and revascularization. However, the restoration of blood flow produces a 'second hit' phenomenon, the effect of which is greater than the initial ischaemic event and characterizes ischaemia-reperfusion (IR) injury. Some examples of potential settings of IR injury include: following thrombolytic therapy for stroke, invasive cardiovascular procedures, solid organ transplantation, and major trauma resuscitation...
June 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28639431/decrease-in-oxidative-stress-parameters-after-post-ischaemic-recombinant-human-erythropoietin-administration-in-the-hippocampus-of-rats-exposed-to-focal-cerebral-ischaemia
#4
Jasenka Mršić-Pelčić, Kristina Pilipović, Goran Pelčić, Dinko Vitezić, Gordana Župan
Recombinant human erythropoietin (rhEpo) is a multifunctional drug with antioxidant potential. However, the underlying molecular mechanisms of its action are still unclear. The purpose of this study was to investigate the effects of rhEpo on the brain infarct volume as well as on the levels of the neuronal damage, oxidative stress parameters and active caspase-3, nuclear factor erythroid 2-related factor 2 (Nrf2) and hemeoxygenase-1 (HO-1) expressions in the hippocampi of rats exposed to the right middle cerebral artery occlusion (MCAO) for 1 hr...
June 21, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28638989/parietal-white-matter-lesions-in-alzheimer-s-disease-are-associated-with-cortical-neurodegenerative-pathology-but-not-with-small-vessel-disease
#5
Kirsty E McAleese, Lauren Walker, Sophie Graham, Elisa L J Moya, Mary Johnson, Daniel Erskine, Sean J Colloby, Madhurima Dey, Carmen Martin-Ruiz, John-Paul Taylor, Alan J Thomas, Ian G McKeith, Charles De Carli, Johannes Attems
Cerebral white matter lesions (WML) encompass axonal loss and demyelination, and the pathogenesis is assumed to be small vessel disease (SVD)-related ischemia. However, WML may also result from the activation of Wallerian degeneration as a consequence of cortical Alzheimer's disease (AD) pathology, i.e. hyperphosphorylated tau (HPτ) and amyloid-beta (Aβ) deposition. WML seen in AD have a posterior predominance compared to non-demented individuals but it is unclear whether the pathological and molecular signatures of WML differ between these two groups...
June 21, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28636518/a-patient-with-relapsing-myocardial-ischaemia
#6
Jerrold Spapen, Rita Jacobs, Stijn Lochy, Luc Huyghens, Herbert Spapen
No abstract text is available yet for this article.
March 21, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28636206/retinal-vascular-injuries-and-intravitreal-human-embryonic-stem-cell-derived-haemangioblasts
#7
Jin-Da Wang, Ying An, Jing-Shang Zhang, Xiu-Hua Wan, Wei Zhang, Robert Lanza, Shi-Jiang Lu, Jost B Jonas, Liang Xu
OBJECTIVE: To investigate whether intravitreally applied haemangioblasts (HB) derived from human embryonic stem cells (hESCs) are helpful for the repair of vascular damage caused in animals by an oxygen-induced retinopathy (OIR), by an induced diabetic retinopathy (DR) or by an induced retinal ischaemia with subsequent reperfusion. METHODS: Human embryonic stem cell-derived HBs were transplanted intravitreally into C57BL/6J mice (OIR model), into male Wistar rats with an induced DR and into male Wistar rats undergoing induced retinal ischaemia with subsequent reperfusion...
June 21, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28635573/-colonic-ischaemia-a-condition-with-an-atypical-clinical-presentation-timely-recognition-and-treatment-improve-prognosis
#8
E J A Rondagh, S A Oei, D Goudkade, A A M Masclee, J W Kruimel
The incidence of colonic ischaemia has risen in recent decades because of the ageing population. Patients with colonic ischaemia present with mild abdominal pain, rectal blood loss and/or diarrhoea. However, no pathognomonic signs have been described. Signs of peritonitis are often absent and serum lactate may be normal. This makes prompt recognition and diagnosis difficult, while early treatment with close monitoring is important to optimise prognosis. Computed tomography may have suggestive findings and exclude other causes of abdominal pain, but endoscopy remains the gold standard for confirming the diagnosis...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28632471/lenalidomide-as-a-treatment-for-relapsed-al-amyloidosis-in-an-hiv-positive-patient
#9
Johanna Denman, Kaveh Manavi, Mark Cook
We present a case of an HIV-positive man with systemic immunoglobulin light chain (AL) amyloid with cardiac involvement. At relapse, he was treated with lenalidomide and dexamethasone having previously developed autonomic neuropathy with bortezomib-based chemotherapy. The patient achieved a serological complete response with symptomatic improvement. After 11 cycles, lenalidomide was discontinued due to extensive ischaemia of the gastrointestinal tract. The patient remains symptomatically stable with normal levels of serum-free light chains 11 months after the treatment was discontinued...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28624772/effects-of-electroacupuncture-on-the-cortical-extracellular-signal-regulated-kinase-pathway-in-rats-with-cerebral-ischaemia-reperfusion
#10
Chunxiao Wu, Chun Li, Guoping Zhou, Lu Yang, Guimei Jiang, Jing Chen, Qiushi Li, Zhulian Zhan, Xiuhong Xu, Xin Zhang
OBJECTIVE: To explore the effects of electroacupuncture (EA) on the phosphorylated extracellular signal regulated kinase (p-ERK) pathway of the cerebral cortex in a rat model of focal cerebral ischaemia/reperfusion (I/R). METHODS: 160 adult Sprague-Dawley rats underwent middle carotid artery occlusion (MCAO) to establish I/R injury and were randomly divided into four groups (n=40 each) that remained untreated (I/R group) or received EA at LU5, LI4, ST36 and SP6 (I/R+EA group), the ERK inhibitor PD98059 (I/R+PD group), or both interventions (I/R+PD+EA groups)...
June 17, 2017: Acupuncture in Medicine: Journal of the British Medical Acupuncture Society
https://www.readbyqxmd.com/read/28624109/the-use-of-old-donors-in-liver-transplantation
#11
REVIEW
Bobby V M Dasari, Andrea Schlegel, Hynek Mergental, M Thamara P R Perera
The process of ageing has an impact on the entire human body including the organ systems. In transplantation, professionals are daily faced with risk assessment of suitable donor offers , whether to accept a liver graft for a specific recipient. In this context, livers from elderly donors are more frequently accepted for transplantation, to increase the donor pool and compensate the high waiting list mortality. In the current practice it is not unusual to accept 60-year old donor livers for transplantation, as the donor demographics have significantly changed over the years...
April 2017: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/28624104/acute-kidney-injury-after-liver-transplantation-recent-insights-and-future-perspectives
#12
REVIEW
Jubi E de Haan, Ewout J Hoorn, Hilde R H de Geus
Acute kidney injury (AKI) is a common postoperative complication after liver transplantation (LT). The occurrence of postoperative AKI after LT (Post-LT AKI) is associated with inferior patient and graft outcomes. Post-LT AKI is multifactorial in origin and has been related to the severity of liver disease, pre-LT renal dysfunction, graft quality, perioperative events and toxicity of immunosuppressive therapy. Furthermore it is thought that hepatic ischaemia reperfusion injury might be a driving force in the aetiology of post-LT AKI...
April 2017: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/28622743/endovascular-treatment-for-chronic-lower-extremity-ischaemia-with-sub-acute-deterioration
#13
Liangxi Yuan, Songlin Guo, Jian Dong, Jian Zhou, Qingsheng Lu, Junmin Bao, Zaiping Jing
OBJECTIVES: The purpose of this study is to report the efficacy of endovascular treatment for patients with sub-acute (14-day to 2-month) deterioration of chronic lower extremity ischaemia. MATERIALS AND METHODS: Between June 2013 and May 2015, 26 consecutive patients (22 men, 4 women; mean age, 68.6 years; range, 50-86 years) were treated for sub-acute deterioration of chronic lower extremity ischaemia in our hospital. All patients were treated with catheter-directed thrombolysis initially and then adjunctive percutaneous transluminal angioplasty and/or stenting was performed to correct underlying lesions...
July 2017: Diabetes & Vascular Disease Research
https://www.readbyqxmd.com/read/28617114/significance-of-chilaiditi-sign-and-chilaiditi-syndrome
#14
Kewal Arunkumar Mistry, Rohit Bhoil, Neeraj Kumar, Rajesh Chopra, Nishant Thapar
Chilaiditi sign and syndrome are uncommon conditions and often misdiagnosed. They are clinically significant, however, because they can result in a range of complications, including bowel volvulus, perforation and obstruction. When patients are symptomatic, treatment is usually conservative and surgery is rarely indicated unless there is a suspicion of ischaemia, or if conservative management does not resolve other signs and symptoms. This article describes Chilaiditi sign and syndrome, and presents four case studies to illustrate the relevant signs and symptoms...
June 15, 2017: Emergency Nurse: the Journal of the RCN Accident and Emergency Nursing Association
https://www.readbyqxmd.com/read/28617059/delayed-ischaemia-due-to-vasospasm-after-fenestration-of-a-large-arachnoid-cyst
#15
Jochem K H Spoor, Hugo P Aben, Bachtiar Burhani, Geert-Jan Rutten
An 18-year-old patient developed multiple infarcts, nine days after endoscopic fenestration of a large arachnoid cyst. We consider vasospasm to be the most likely cause, presumably triggered by a chemical meningitis. Although mostly seen after subarachnoid haemorrhage, vasospasm can also occur after traumatic brain injury, brain surgery or meningitis.
June 15, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28616696/-epileptic-seizures-and-epilepsy-after-a-stroke-incidence-prevention-and-treatment
#16
F Benninger, M Holtkamp
Following stroke, 3-6% of patients develop acute symptomatic seizures within the first 7 days. The rate is higher after cerebral haemorrhage compared to ischaemia. In 10-12% of patients, after more than 7 days unprovoked seizures occur. Due to these low incidence rates, primary prophylaxis with antiepileptic drugs is generally not necessary. Following one acute symptomatic seizure, recurrence risk within the first 7 days post-stroke is 10-20%, generally arguing against secondary prophylaxis with an antiepileptic drug...
June 14, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28612280/mid-term-and-long-term-safety-and-efficacy-of-bioresorbable-vascular-scaffolds-versus-metallic-everolimus-eluting-stents-in-coronary-artery-disease-a%C3%A2-weighted-meta-analysis-of-seven-randomised-controlled-trials-including-5577-patients
#17
J Elias, I M van Dongen, R P Kraak, R Y G Tijssen, B E P M Claessen, J G P Tijssen, R J de Winter, J J Piek, J J Wykrzykowska, J P S Henriques
AIMS: Mid- and long-term safety and efficacy of the Absorb bioresorbable vascular scaffold (BVS) have been studied in randomised trials; however, most were not individually powered for clinical endpoints. We performed a weighted meta-analysis comparing mid- and long-term outcomes in patients treated with the BVS compared with the Xience metallic stent. METHODS AND RESULTS: Randomised trials comparing the BVS and Xience were identified by searching MEDLINE, EMBASE and conference abstracts...
June 13, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28608496/stress-ulcer-prophylaxis-in-the-intensive-care-unit-trial-detailed-statistical-analysis-plan
#18
M Krag, A Perner, J Wetterslev, T Lange, M P Wise, M Borthwick, S Bendel, P Pelosi, F Keus, A B Guttormsen, J C Schefold, T S Meyhoff, S Marker, M H Møller
BACKGROUND: In this statistical analysis plan, we aim to provide details of the pre-defined statistical analyses of the Stress Ulcer Prophylaxis in the Intensive Care Unit (SUP-ICU) trial. The aim of the SUP-ICU trial is to assess benefits and harms of stress ulcer prophylaxis with a proton pump inhibitor in adult patients in the intensive care unit (ICU). METHODS: The SUP-ICU trial is an investigator-initiated, international, multicentre, randomised, blinded, parallel-group trial of intravenously pantoprazole 40 mg once daily vs...
June 12, 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28605479/collapsed-stent-graft-and-severe-malperfusion-2%C3%A2-years-after-endovascular-aortic-repair
#19
Yoshihiro Goto, Soh Hosoba, Shinji Ogawa, Yoshihisa Kinoshita
Late collapsing of a stent graft is an extremely rare event, with one existing report describing this phenomenon. A 65-year-old man with a history of endovascular aortic repair for an abdominal aortic aneurysm presented with paraplegia and bilateral lower limb ischaemia. Contrast-enhanced computed tomography showed a dissection of the descending thoracic aorta and a collapsed stent graft, resulting in bilateral lower limb ischaemia. Subsequent axillo-bifemoral bypass resolved his lower extremity functions. The patient required haemodialysis due to acute kidney failure...
June 10, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28604104/intranasal-delivery-of-quercetin-loaded-mucoadhesive-nanoemulsion-for-treatment-of-cerebral-ischaemia
#20
Niyaz Ahmad, Rizwan Ahmad, Atta Abbas Naqvi, Md Aftab Alam, Mohammad Ashafaq, Rehan Abdur Rub, Farhan Jalees Ahmad
BACKGROUND: Quercetin (QUR), as an antioxidant flavonoid, exhibits potential role in the amelioration of cerebral ischaemia; however, poor solubility as well as oral absorption results low serum and tissue levels for this drug. PURPOSE OF THE STUDY: To enhance bioavailability, this study aims to prepare QUR nanoemulsions and administer via non-invasive nasal route in order to evaluate the drug targeting in brain. METHODS: Quercetin mucoadhesive nanoemulsion (QMNE) was prepared (ionic gelation method) and optimized using various parameters, that is, particle size, entrapment efficiency, zeta potential and ex vivo permeation study...
June 12, 2017: Artificial Cells, Nanomedicine, and Biotechnology
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