5,451 results match your criteria nerve infarction

A novel bone-thinning technique for transcranial stimulation motor-evoked potentials in rats.

Sci Rep 2021 Jun 14;11(1):12496. Epub 2021 Jun 14.

Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, 734-8553, Japan.

Transcranial electrical stimulated motor-evoked potentials (tcMEPs) are widely used to evaluate motor function in humans, and even in animal studies, tcMEPs are used to evaluate neurological dysfunction. However, there is a dearth of reports on extended tcMEP recordings in both animal models and humans. Therefore, this study examined a new technique for stably recording tcMEPs over several weeks in six healthy female Sprague-Dawley rats. Read More

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Neuroprotective effect of aspirin combined with ginkgolide injection on cerebral ischemic stroke rats and its effect on ERK12 signal pathway.

Saudi J Biol Sci 2021 Jun 15;28(6):3193-3197. Epub 2021 Apr 15.

Department of Emergency, Yantaishan Hospital, Yantai 264000, China.

The main aim of this study was to evaluate the neuroprotective effect of aspirin combined with ginkgolide injection on cerebral ischemic stroke model rats and its effect on extracellular regulated protein kinase 1/2 (REK1/2) signaling pathway, and to clarify the possible mechanism of aspirin combined with ginkgolide injection on neuroprotective mechanism. Experimental rats were randomly divided into sham group, model group, aspirin group, ginkgolide group and combination group (aspirin + ginkgolide injection) (n = 20). The results revealed scores of neurological dysfunction and infarct volume in aspirin group, ginkgolide group and combination group rats were lower than those in model group ( < 0. Read More

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Therapeutic oxygen delivery by perfluorocarbon-based colloids.

Adv Colloid Interface Sci 2021 May 1;294:102407. Epub 2021 May 1.

Harangoutte Institute, 68160 Ste Croix-aux-Mines, France.

After the protocol-related indecisive clinical trial of Oxygent, a perfluorooctylbromide/phospholipid nanoemulsion, in cardiac surgery, that often unduly assigned the observed untoward effects to the product, the development of perfluorocarbon (PFC)-based O nanoemulsions ("blood substitutes") has come to a low. Yet, significant further demonstrations of PFC O-delivery efficacy have continuously been reported, such as relief of hypoxia after myocardial infarction or stroke; protection of vital organs during surgery; potentiation of O-dependent cancer therapies, including radio-, photodynamic-, chemo- and immunotherapies; regeneration of damaged nerve, bone or cartilage; preservation of organ grafts destined for transplantation; and control of gas supply in tissue engineering and biotechnological productions. PFC colloids capable of augmenting O delivery include primarily injectable PFC nanoemulsions, microbubbles and phase-shift nanoemulsions. Read More

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Sympathetic Activation and Arrhythmogenesis after Myocardial Infarction: Where Do We Stand?

J Cardiovasc Dev Dis 2021 May 15;8(5). Epub 2021 May 15.

1st Department of Cardiology, University Hospital of Ioannina, 1 St. Niarxou Avenue, 45500 Ioannina, Greece.

Myocardial infarction often leads to progressive structural and electrophysiologic remodeling of the left ventricle. Despite the widespread use of β-adrenergic blockade and implantable defibrillators, morbidity and mortality from chronic-phase ventricular tachyarrhythmias remains high, calling for further investigation on the underlying pathophysiology. Histological and functional studies have demonstrated extensive alterations of sympathetic nerve endings at the peri-infarct area and flow-innervation mismatches that create a highly arrhythmogenic milieu. Read More

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Taurine Alleviates Sympathetic Innervation by Inhibiting NLRP3 Inflammasome in Postinfarcted Rats.

J Cardiovasc Pharmacol 2021 Apr 15;77(6):745-755. Epub 2021 Apr 15.

Cardiovascular Institute, An Nan Hospital, China Medical University, Tainan, Taiwan; and.

Abstract: The NLRP3 inflammasome is activated by myocardial infarction and then induces the activation of inflammatory caspase-1 activation and maturation of IL-1β, a regulator of synthesis of the nerve growth factor (NGF). Here, we studied whether taurine, 2-aminoethanesulphonic acid, can attenuate cardiac sympathetic reinnervation by modulating NLRP3 inflammasome-mediated NGF in a rat model of myocardial infarction. Male Wistar rats were subjected to coronary ligation and then randomized to either saline or taurine for 3 days or 4 weeks. Read More

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Mechanisms of pain in sickle cell disease.

Br J Pain 2021 May 22;15(2):213-220. Epub 2020 May 22.

College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, UAE.

Objectives: The hallmark of sickle cell disease (SCD) is acute and chronic pain, and the pain dominates the clinical characteristics of SCD patients. Although pharmacological treatments of SCD targeting the disease mechanisms have been improved, many SCD patients suffer from pain. To overcome the pain of the disease, there have been renewed requirements to understand the novel molecular mechanisms of the pain in SCD. Read More

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Naringin attenuates cerebral ischemia-reperfusion injury in rats by inhibiting endoplasmic reticulum stress.

Transl Neurosci 2021 Jan 13;12(1):190-197. Epub 2021 May 13.

Department of Radiology, Translational Medicine Research Center, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou 310006, China.

Objective: This investigation was carried out with an aim of exploring neuroprotection by naringin (Nar) in rats with cerebral ischemia-reperfusion (CI/R) injury and its mechanism.

Methods: Rats were grouped into ischemia-reperfusion (I/R), sham operation (Sham), nimodipine control (NIM), and different doses of Nar (Nar-L, Nar-M, Nar-H) groups. With Zea Longa score for assessment of neurological deficits, dry and wet method for measurement of brain tissue water content, and (2,3,5-triphenyltetrazolium chloride) TTC staining for determination of cerebral infarction volume, the related parameters were obtained and compared. Read More

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January 2021

Comparison of Touhy and Quincke needles on intravascular injection rate in lumbar transforaminal epidural block: a randomized prospective trial.

Reg Anesth Pain Med 2021 May 26. Epub 2021 May 26.

Department of Anesthesiology and Pain Medicine, Daejeon St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea (the Republic of)

Background: Transforaminal epidural steroid injection is widely used in clinical practice to effectively deliver injectate into the ventral epidural space. Complications associated with intravascular injection such as spinal cord infarction and paraplegia can occur during transforaminal epidural steroid injection. To improve the safety of the procedure, avoidance of intravascular injection is crucial, for which appropriate needle selection is important. Read More

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AT II Receptor Blockade and Renal Denervation: Different Interventions with Comparable Renal Effects?

Kidney Blood Press Res 2021 May 25:1-11. Epub 2021 May 25.

Department of Department of Internal Medicine 4 (Nephrology und Hypertension), University of Erlangen, Erlangen, Germany.

Background: Angiotensin II (Ang II) and the renal sympathetic nervous system exert a strong influence on renal sodium and water excretion. We tested the hypothesis that already low doses of an Ang II inhibitor (candesartan) will result in similar effects on tubular sodium and water reabsorption in congestive heart failure (CHF) as seen after renal denervation (DNX).

Methods: Measurement of arterial blood pressure, heart rate (HR), renal sympathetic nerve activity (RSNA), glomerular filtration rate (GFR), renal plasma flow (RPF), urine volume, and urinary sodium. Read More

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Clinical effect and changes of ET-1, FMD and NO levels in the treatment of acute cerebral infarction with acanthopanax injection.

Am J Transl Res 2021 15;13(4):3600-3608. Epub 2021 Apr 15.

Department of Neurology, The First People's Hospital of Taizhou Taizhou, Zhejiang Province, China.

Objective: To explore clinical efficacy of acanthopanax injection for the treatment of acute cerebral infarction and its effect on the changes in endothelin-1 (ET-1), flow-mediated vasodilation (FMD) and nitric oxide (NO) levels.

Methods: A total of 120 patients with acute cerebral infarction were selected for prospective study. The patients with conventional treatment regimen were the control group while the observation group was treated acanthopanax injection in addition to the treatment given to the control group. Read More

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[Neurological Manifestations in Antiphospholipid Syndrome].

Brain Nerve 2021 May;73(5):526-536

Department of Rheumatology, Endocrinology and Nephrology, Graduate School of Medicine and Faculty of Medicine, Hokkaido University.

Antiphospholipid syndrome (APS) is an autoimmune disease characterized by persistent presence of positive antiphospholipid antibodies (aPLs). Historically, aPLs first attracted attention at the beginning of the 1970s, as a risk factor for the development of myelitis via cross-reaction with cephalin and sphingomyelin as neuronal tissue-enriched phospholipids. Primary APS manifestations include arteriovenous thrombosis and pregnancy complications; however, in rare cases, aPL-related neurological disorders including cognitive dysfunction, chorea, and transverse myelitis are observed. Read More

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Renal Denervation Attenuates Neuroinflammation in the Brain by Regulating Gut-Brain Axis in Rats With Myocardial Infarction.

Front Cardiovasc Med 2021 26;8:650140. Epub 2021 Apr 26.

Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.

The development of neuroinflammation deteriorates the prognosis of myocardial infarction (MI). We aimed to investigate the effect of renal denervation (RDN) on post-MI neuroinflammation in rats and the related mechanisms. Male adult Sprague-Dawley rats were subjected to sham or ligation of the left anterior descending coronary artery to induce MI. Read More

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Vagus Nerve Stimulation in Early Stage of Acute Myocardial Infarction Prevent Ventricular Arrhythmias and Cardiac Remodeling.

Front Cardiovasc Med 2021 26;8:648910. Epub 2021 Apr 26.

State Key Laboratory of Cardiovascular Disease, Arrhythmia Center, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.

To evaluate whether low level left vagus nerve stimulation (LLVNS) in early stage of myocardial infarction (MI) could effectively prevent ventricular arrhythmias (VAs) and protect cardiac function, and explore the underlying mechanisms. After undergoing implantable cardioverter defibrillators (ICD) and left cervical vagal stimulators implantation and MI creation, 16 dogs were randomly divided into three groups: the MI ( = 6), MI+LLVNS ( = 5), and sham operation ( = 5) groups. LLVNS was performed for 3 weeks. Read More

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Millard-Gubler Syndrome Associated with Cerebellar Ataxia in a Patient with Isolated Paramedian Pontine Infarction - A Rarely Observed Combination with a Benign Prognosis: A Case Report.

Case Rep Neurol 2021 Jan-Apr;13(1):239-245. Epub 2021 Apr 13.

Department of Neurology, College of Health Science, Addis Ababa University, Addis Ababa, Ethiopia.

Isolated pontine infarction accounts for 7% of all ischemic strokes. Millard-Gubler syndrome is a clinical syndrome which occurs following lesions involving the ventral portion of the caudal pons, resulting in classic clinical features such as ipsilateral abducens and facial nerve palsy and contralateral hemiparesis. We report the case of a 55-year-old male patient having presented to the Yehuleshet Specialty Clinic 6 years back with sudden-onset dysarthria and appendicular ataxia of 10 days duration. Read More

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Complications of Endovascular Treatment of Intracranial Dural Arteriovenous Fistulas.

Acta Neurochir Suppl 2021 ;132:123-127

Department of Neurosurgery, University of Toyama, Toyama, Japan.

Aims: To report the endovascular treatment and complications of intracranial and spinal dural arteriovenous (AV) fistulas.

Methods: A retrospective analysis of 863 cases with dural AV fistulas was completed in the nationwide registry study of the Japanese Society of Neuroendovascular Therapy.

Results: Treatments included transarterial/transvenous embolization (TAE/TVE), open surgery, stereotactic radiation, and their combinations. Read More

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January 2021

Anal Squamous Cell Carcinoma in Ulcerative Colitis: Can Pouches Withstand Traditional Treatment Protocols?

Dis Colon Rectum 2021 Apr 26. Epub 2021 Apr 26.

Department of Colorectal Surgery, Digestive Disease Surgical Institute, Cleveland Clinic, Cleveland, Ohio General Surgery, Digestive Disease Surgical Institute, Cleveland Clinic, Cleveland, Ohio Department of Gastroenterology, Digestive Disease Surgical Institute, Cleveland Clinic, Cleveland, Ohio.

Background: Anal squamous cell carcinoma has rarely reported in ulcerative colitis.

Objective: Understand the prognosis of anal squamous cell carcinoma in the setting of ulcerative colitis.

Design: Retrospective review. Read More

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Hemorrhagic spinal melanotic schwannoma presenting as acute chest pain: A case report and literature review.

Surg Neurol Int 2021 14;12:164. Epub 2021 Apr 14.

Department of Neurosurgery, University of South Dakota Sanford School of Medicine, Sioux Falls, South Dakota, United States.

Background: Melanotic schwannoma (MS) is a rare variant of peripheral nerve sheath tumor. MS commonly arises along the spinal nerve sheath. Patients most often experience pain along the dermatome of the affected nerve root. Read More

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Bilateral simultaneous non-arteritic ischaemic optic neuropathy: a rare complication of idiopathic systemic capillary leak syndrome (SCLS).

BMJ Case Rep 2021 May 4;14(5). Epub 2021 May 4.

Ophthalmology Department, Whipps Cross University Hospital, Barts Health NHS Trust, London, UK.

We report a case of bilateral symmetrical superior visual field defects in a 72-year-old man first reported during the recovery from systemic capillary leak syndrome (SCLS). During the acute illness, he required extensive and prolonged fluid replacement and mechanical ventilation for severe hypotension, shock and multiorgan dysfunction. His visual field defect and optic nerve changes were consistent with a diagnosis of ischaemic optic neuropathy. Read More

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Neuroprotective effect of helium after neonatal hypoxic ischemia: a narrative review.

Med Gas Res 2021 Jul-Sep;11(3):121-123

Department of Neurosurgery & Brain and Nerve Research Laboratory, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China.

Neonatal hypoxic ischemia is one of the leading causes of permanent morbidity and mortality in newborns, which is caused by difficulty in supplying blood and oxygen to brain tissue and is often associated with epilepsy, cerebral palsy, death, short-term or long-term neurological and cognitive impairment. In recent years, the clinical therapeutic effects of noble gases have been gradually discovered and recognized. Numerous studies have shown that noble gases have unique neuroprotective effects to restore damaged nerve and relieve symptoms in patients. Read More

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Acute Exposure to Diesel Exhaust Increases Muscle Sympathetic Nerve Activity in Humans.

J Am Heart Assoc 2021 May 4;10(10):e018448. Epub 2021 May 4.

Department of Public Health and Clinical Medicine Section of Medicine/Respiratory Umeå University Umeå Sweden.

Background Diesel exhaust (DE) emissions are a major contributor to ambient air pollution and are strongly associated with cardiovascular morbidity and mortality. Exposure to traffic-related particulate matter is linked with acute adverse cardiovascular events; however, the mechanisms are not fully understood. We examined the role of the autonomic nervous system during exposure to DE that has previously only been indirectly investigated. Read More

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Resiniferatoxin reduces cardiac sympathetic nerve activation to exert a cardioprotective effect during myocardial infarction.

Int J Clin Exp Pathol 2021 15;14(4):408-416. Epub 2021 Apr 15.

Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute of Wuhan University, Hubei Key Laboratory of Cardiology Wuhan 430000, People's Republic of China.

Background And Objective: Myocardial infarction (MI) is a common critical disease of the cardiovascular system. The process of MI is often accompanied by the excessive activation of cardiac sympathetic nerves, which leads to arrhythmia. Resiniferatoxin (RTX) is a transient receptor potential vanilloid 1 (TRPV1), involved in the cardiac sympathetic afferent reflex. Read More

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Anterior ischemic optic neuropathy and cilioretinal artery occlusion secondary to polyarteritis nodosa: A case report.

Photodiagnosis Photodyn Ther 2021 Apr 27;34:102299. Epub 2021 Apr 27.

Erciyes University Faculty of Medicine, Department of Ophthalmology, Kayseri, Turkey.

Introduction: Polyarteritis nodosa is a systemic vasculitis characterized by necrotizing inflammatory lesions affecting the middle and small arteries.

Case Presentation: A 23-year-old male presented to our ophthalmology clinic with a 1-day history of sudden vision loss in his left eye. Posterior segment examination the left eye showed optic disc borders were faint, hyperemic and fluffy with cilioretinal artery occlusion signs present. Read More

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Concomitant Embolization and Microsurgical Resection of a Giant, Hypervascular Skull Base Meningioma: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2021 Apr 30. Epub 2021 Apr 30.

Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.

Some skull base tumors can be extremely hypervascular, incorporating multiple vascular territories and demonstrating arteriovenous shunting. Devascularization is a critical step undertaken early in meningioma surgery, necessary before the debulking that is required in skull base tumors. While devascularization can often be achieved with appropriate approach selection, bony drilling, and microsurgical cautery, preoperative embolization of meningiomas has an invaluable role in selected cases. Read More

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Long-COVID and Post-COVID Health Complications: An Up-to-Date Review on Clinical Conditions and Their Possible Molecular Mechanisms.

Viruses 2021 04 18;13(4). Epub 2021 Apr 18.

Centre for Genomics and Applied Gene Technology, Institute of Integrative Omics and Applied Bio-technology (IIOAB), Nonakuri, Purba Medinipur, West Bengal 721172, India.

The COVID-19 pandemic has infected millions worldwide, leaving a global burden for long-term care of COVID-19 survivors. It is thus imperative to study post-COVID (i.e. Read More

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Lumbosacral plexopathy due to pelvic hematoma after extracorporeal membrane oxygenation: A case report.

Medicine (Baltimore) 2021 Apr;100(17):e25698

Department of Neurology, Washington University School of Medicine, Saint Louis, MO.

Rationale: Peripheral nerve injury related to vascular complications associated with extracorporeal membrane oxygenation (ECMO) is perhaps underappreciated. Compared to the well-described central nervous system complications of ECMO, brachial plexopathy and lumbosacral plexopathy have rarely been reported. We report this case to heighten awareness of lumbosacral plexus injury due to pelvic hematoma formation after ECMO. Read More

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Isolated trochlear palsy as the only presentation of midbrain infarction: a case report.

J Int Med Res 2021 Apr;49(4):3000605211008292

Department of Neurology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung.

Trochlear palsy often results from traumatic, congenital and microvascular disorders. An intra-axial lesion as a cause of trochlear palsy is uncommon. Moreover, it usually accompanies other neurological deficits. Read More

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Cerebellar artery infarction with sudden hearing loss and vertigo as initial symptoms: A case report.

World J Clin Cases 2021 Apr;9(11):2519-2523

Department of Neurology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200336, China.

Background: Sudden hearing loss (SHL) is associated with serious systematic conditions such as neoplasms, vascular events, autoimmune diseases, infections, and iatrogenic injury. Some authors report that SHL can be an early warning sign of impending vertebrobasilar ischemic stroke. It is important to distinguish stroke from benign disease. Read More

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Revascularization approaches in patients with radiation-induced carotid stenosis: an updated systematic review and meta-analysis.

Kardiol Pol 2021 Apr 16. Epub 2021 Apr 16.

Background: Ionizing radiation constitutes a well-known risk factor of carotid artery stenosis. The survival rates of head and neck cancer patients undergoing radiotherapy have risen owing to medical advancements in the field. As a consequence, the incidence of carotid artery stenosis in these high-risk patients has increased. Read More

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Lack of Macrophage Migration Inhibitory Factor Reduces Susceptibility to Ventricular Arrhythmias During the Acute Phase of Myocardial Infarction.

J Inflamm Res 2021 7;14:1297-1311. Epub 2021 Apr 7.

Department of Anesthesiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, People's Republic of China.

Background: Macrophages are involved in inflammatory responses and play a crucial role in aggravating ventricular arrhythmias (VAs) after myocardial infarction (MI). Macrophage migration inhibitory factor (MIF) participates in inflammatory responses during acute MI. In the present study, we hypothesized that knockout (KO) of MIF may prevent VAs during the acute phase of MI by inhibiting macrophage-derived pro-inflammatory mediators. Read More

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