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https://www.readbyqxmd.com/read/29058289/down-regulation-of-nox4-by-betulinic-acid-protects-against-cerebral-ischemia-reperfusion-in-mice
#1
Pei Lu, Chen-Chen Zhang, Xiao-Min Zhang, Hui-Ge Li, Ai-Lin Luo, Yu-Ke Tian, Hui Xu
Ischemic stroke leads to high potentiality of mortality and disability. The current treatment for ischemic stroke is mainly focused on intravenous thrombolytic therapy. However, ischemia/ reperfusion induces neuronal damage, which significantly influences the outcome of patients with ischemic stroke, and the exact mechanism implicated in ischemia/reperfusion injury remains unclear, although evidence shows that oxidative stress is likely to be involved. Betulinic acid is mainly known for its anti-tumor and anti-inflammatory activities...
October 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/29056337/early-life-gene-expression-in-neurons-modulates-lasting-epigenetic-states
#2
Hume Stroud, Susan C Su, Sinisa Hrvatin, Alexander W Greben, William Renthal, Lisa D Boxer, M Aurel Nagy, Daniel R Hochbaum, Benyam Kinde, Harrison W Gabel, Michael E Greenberg
In mammals, the environment plays a critical role in promoting the final steps in neuronal development during the early postnatal period. While epigenetic factors are thought to contribute to this process, the underlying molecular mechanisms remain poorly understood. Here, we show that in the brain during early life, the DNA methyltransferase DNMT3A transiently binds across transcribed regions of lowly expressed genes, and its binding specifies the pattern of DNA methylation at CA sequences (mCA) within these genes...
October 16, 2017: Cell
https://www.readbyqxmd.com/read/29051728/exacerbation-of-brain-injury-by-post-stroke-exercise-is-contingent-upon-exercise-initiation-timing
#3
Fengwu Li, Xiaokun Geng, Hajra Khan, John T Pendy, Changya Peng, Xiaorong Li, Jose A Rafols, Yuchuan Ding
Accumulating evidence has demonstrated that post-stroke physical rehabilitation may reduce morbidity. The effectiveness of post-stroke exercise, however, appears to be contingent upon exercise initiation. This study assessed the hypothesis that very early exercise exacerbates brain injury, induces reactive oxygen species (ROS) generation, and promotes energy failure. A total of 230 adult male Sprague-Dawley rats were subjected to middle cerebral artery (MCA) occlusion for 2 h, and randomized into eight groups, including two sham injury control groups, three non-exercise and three exercise groups...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29043564/the-ucp2-866g-a-polymorphism-could-be-considered-as-a-genetic-marker-of-different-functional-prognosis-in-ischemic-stroke-after-recanalization
#4
I Díaz-Maroto Cicuéndez, E Fernández-Díaz, J García-García, J Jordán, I Fernández-Cadenas, J Montaner, G Serrano-Heras, T Segura
Recent studies based on experimental animal models of stroke have suggested that uncoupling protein 2 (UCP2), an inner mitochondrial membrane protein that is thought to regulate energy metabolism and reduce reactive oxygen species generation, provides protection against reperfusion damage. We aimed to investigate whether -866G/A polymorphism in the promoter of the UCP2 gene, which enhances its transcriptional activity, is associated with functional prognosis in patients with embolic ischemic stroke after early recanalization...
October 17, 2017: Neuromolecular Medicine
https://www.readbyqxmd.com/read/29037436/which-imaging-before-reperfusion-strategy
#5
REVIEW
J M Olivot
The ischemic penumbra is a transient and potentially reversible condition. Therefore, infarct progression and its counterpart penumbral salvage are highly variable and result from the interaction of 3 major factors: collateral flow, revascularization delay and success. Multimodal brain imaging now offers in clinical practice an exhaustive characterization of the acute ischemic injury: vessel site occlusion, infarction/critical hypoperfusion volume, and collateral flow. From 1995 to 2015, IV alteplase administered within 4...
October 13, 2017: Revue Neurologique
https://www.readbyqxmd.com/read/29036937/behaviors-related-to-mosquito-borne-diseases-among-different-ethnic-minority-groups-along-the-china-laos-border-areas
#6
Chao Wu, Xiaofang Guo, Jun Zhao, Quan Lv, Hongbin Li, Edward B McNeil, Virasakdi Chongsuvivatwong, Hongning Zhou
Background: In China, mosquito-borne diseases are most common in the sub-tropical area of Yunnan province. The objective of this study was to examine behaviors related to mosquito-borne diseases in different ethnic minority groups and different socioeconomic groups of people living in this region. Methods: A stratified two-stage cluster sampling technique with probability proportional to size was used in Mengla County, Xishuangbanna Prefecture, Yunnan. Twelve villages were used to recruit adult (≥18 years old) and eight schools were used for children (<18 years old)...
October 15, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29036207/little-ice-age-climatic-erraticism-as-an-analogue-for-future-enhanced-hydroclimatic-variability-across-the-american-southwest
#7
Julie Loisel, Glen M MacDonald, Marcus J Thomson
The American Southwest has experienced a series of severe droughts interspersed with strong wet episodes over the past decades, prompting questions about future climate patterns and potential intensification of weather disruptions under warming conditions. Here we show that interannual hydroclimatic variability in this region has displayed a significant level of non-stationarity over the past millennium. Our tree ring-based analysis of past drought indicates that the Little Ice Age (LIA) experienced high interannual hydroclimatic variability, similar to projections for the 21st century...
2017: PloS One
https://www.readbyqxmd.com/read/29034765/assessment-of-maternal-cerebral-blood-flow-velocity-by-transcranial-doppler-ultrasound-before-delivery-and-in-the-early-postpartum-period
#8
Hale Z Batur Caglayan, Bijen Nazliel, Mehmet Cinar, Esra Ataoglu, Ozlem Moraloglu, Ceyla Irkec
OBJECTIVE: This prospective observational study aimed to identify the effects of labor on cerebral hemodynamics by measuring the middle cerebral artery (MCA) blood flow velocity by transcranial Doppler ultrasound (TCD), and the related factors just before delivery and within the 24 h after delivery. METHODS: The study included 35 healthy pregnant women with a gestational age of >37 weeks who were in labor and a control group including healthy, age-matched, nonpregnant women (n = 24)...
October 16, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29025779/scorpion-bite-induced-ischaemic-stroke
#9
Rakesh Reddy C, Nandakishore Bompelli, Vikram Khardenavis, Anirudda Deshpande
We report a 54-year-old woman with scorpion bite. After 3 hours of admission, the patient developed sudden onset tachycardia with hypotension. Cardiac evaluation showed raised creatine kinase MB isoenzyme was elevated; ECG and two-dimensional echocardiography findings were suggestive of myocarditis. Subsequently, she developed transient ventricular tachycardia before developing abrupt onset, right hemiplegia, global aphasia and progressive worsening of sensorium 12 hours after the bite. MRI of brain revealed massive left middle cerebral artery (MCA) territory infarct...
October 11, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29024880/experience-with-and-amount-of-postpartum-maternity-care-comparing-women-who-rated-the-care-they-received-from-the-maternity-care-assistant-as-good-or-less-than-good-care
#10
C I Baas, T A Wiegers, T P de Cock, J J H M Erwich, E R Spelten, E K Hutton
OBJECTIVE: The postpartum period is an important time in the lives of new mothers, their children and their families. The aim of postpartum care is 'to detect health problems of mother and/or baby at an early stage, to encourage breastfeeding and to give families a good start' (Wiegers, 2006). The Netherlands maternity care system aims to enable every new family to receive postpartum care in their home by a maternity care assistant (MCA). In order to better understand this approach, in this study we focus on women who experienced the postpartum care by the MCA as 'less than good' care...
September 19, 2017: Midwifery
https://www.readbyqxmd.com/read/29018652/anastomotic-aneurysm-formation-after-high-flow-bypass-surgery-a-case-report-with-histopathological-study
#11
Tatsuya Uchida, Masanori Yoshino, Shinji Ito, Takayuki Hara
Bypass surgery is often used in the treatment of large and giant aneurysms. Major complications that often arise during the perioperative period include cranial nerve palsy, ischemic complications, and hyperperfusion. However, there have been a few reports about late onset complications such as anastomotic aneurysms. In particular, anastomotic aneurysm after high flow bypasses has never been reported. A 57-year-old woman who had been suffering from left eye pain was diagnosed with a large aneurysm of the left internal carotid artery (ICA) in the cavernous portion...
October 2017: NMC Case Rep J
https://www.readbyqxmd.com/read/28993752/histological-characteristics-of-intracranial-atherosclerosis-in-a-chinese-population-a-postmortem-study
#12
Wen Jie Yang, Mark Fisher, Lu Zheng, Chun Bo Niu, Annlia Paganini-Hill, Hai Lu Zhao, Yun Xu, Ka Sing Wong, Ho Keung Ng, Xiang Yan Chen
BACKGROUND: Anterior and posterior circulation atherosclerosis differ in vascular risk factors and stroke mechanisms. However, few studies have compared the pathological features between these lesions. Using a series of intracranial artery specimens, we characterized the intracranial atherosclerotic lesions and compared pathological features among different arteries of the intracranial vasculature. METHODS: Intracranial large arteries of 32 consecutively recruited autopsy cases of Chinese adults aged 45 years or older were examined pathologically using routine histology and immunostaining, to characterize the pathological features of the atherosclerotic lesions...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28993442/in-room-assessment-of-intravascular-velocity-from-time-resolved-rotational-angiography-in-patients-with-arteriovenous-malformation-a-pilot-study
#13
Chung Jung Lin, Huai Che Yang, Ai Chi Chien, Wan Yuo Guo, Chih Chun Wu, Sheng Che Hung, Ko Kung Chen, Hsiu Mei Wu, Chao Bao Luo, Wei Fa Chu, Jia Sheng Hong, Chun Shien Frank Wu
BACKGROUND: Time-resolved rotational angiography (t-RA) enables interventionists to better comprehend complex arteriovenous malformations (AVMs), thereby facilitating endovascular treatment. However, its use in evaluating hemodynamic changes has rarely been explored. OBJECTIVE: This study uses t-RA to estimate intravascular flow in patients with AVM to compare this with flow in the normal population. METHODS: Patients with available t-RA scans were prospectively categorized into one of three groups: hemorrhagic AVM, non-hemorrhagic AVM and control...
October 9, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28992926/the-real-welfare-scheme-identification-of-risk-and-protective-factors-for-welfare-outcomes-in-commercial-pig-farms-in-the-uk
#14
F Pandolfi, I Kyriazakis, K Stoddart, N Wainwright, S A Edwards
From 2013-2016, animal-based measures were collected as part of the "Real Welfare" protocol adopted by the Red Tractor Pigs Assurance Scheme to assess the welfare in finisher pig herds in the UK. Trained veterinarians from 89 veterinary practices assessed 112,241 pens (hospital pens excluded) from 1928 farms using a multistage sampling protocol, and collected data about pig welfare, management and farm environment. Multivariable analyses were conducted for five main welfare outcomes: lameness, pigs requiring hospitalization, severe tail lesions, severe body marks and enrichment use ratio (number of active pigs interacting with the enrichment/total number of active pigs)...
October 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28992116/in-vitro-activity-of-echinocandins-against-562-clinical-yeast-isolates-from-a-romanian-multicentre-study
#15
Mihai Mares, Bogdan Minea, Valentin Nastasa, Irina Rosca, Andra-Cristina Bostanaru, Iosif Marincu, Vasilica Toma, Violeta Corina Cristea, Carmen Murariu, Mariana Pinteala
The study presents the echinocandin susceptibility profile of a multi-centre collection of pathogenic yeast isolates from Romanian tertiary hospitals. The 562 isolates were identified using ID32C strips, MALDI-TOF MS and DNA sequencing. Minimal inhibitory concentrations (MICs) of caspofungin (CAS), micafungin (MCA), and anidulafungin (ANI) were assessed and interpreted according to EUCAST guidelines. Minimal fungicidal concentrations (MFC) were determined by plating content from the clear MIC wells. The activity was considered fungicidal at MFC/MIC ≤ 4...
August 4, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28989276/stability-of-medicines-after-repackaging-into-multicompartment-compliance-aids-eight-criteria-for-detection-of-visual-alteration
#16
Valerie Albert, Michael Lanz, Georgios Imanidis, Kurt E Hersberger, Isabelle Arnet
INTRODUCTION: Multicompartment compliance aids (MCA) are widely used by patients. They support the management of medication and reduce unintentional nonadherence. MCA are filled with medicines unpacked from their original packaging. Swiss pharmacists currently provide MCA for 1-2 weeks, although little and controversial information exists on the stability of repackaged medicines. OBJECTIVE: We aimed to validate the usefulness of a simple screening method capable of detecting visual stability problems with repackaged medicines...
2017: Drugs & Therapy Perspectives: for Rational Drug Selection and Use
https://www.readbyqxmd.com/read/28987853/early-hemodynamic-changes-based-on-initial-color-coding-angiography-as-a-predictor-for-developing-subsequent-symptomatic-vasospasm-after-aneurysmal-sah
#17
Jan-Karl Burkhardt, Xiaolin Chen, Ethan A Winkler, Miriam Weiss, John Yue, Daniel L Cooke, Helen Kim, Michael T Lawton
INTRODUCTION: Prediction of vasospasm following aneurysmal subarachnoid hemorrhage (aSAH) remains imperfect and currently relies on clinical and radiographic characteristics. Whether early hemodynamic changes may refine risk stratification for delayed vasospasm (DV) after aSAH was analyzed. METHODS: Patients with aSAH (n=53) and a control of unruptured intracranial aneurysms (UIA) (n=12) with initial color-coding angiography at admission were included in this study (n=65)...
October 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28987838/contralateral-approach-to-middle-cerebral-artery-aneurysms-an-anatomical-clinical-analysis-to-improve-patient-selection
#18
Ali Tayebi Meybodi, Michael T Lawton, Roberto Rodriguez Rubio, Sonia Yousef, Arnau Benet
BACKGROUND: A contralateral approach to clip a middle cerebral artery (MCA) aneurysm in case of bilateral intracranial aneurysms reduces surgical time and cost. However, there is a lack of evidence for objective patient selection. In this study, we assessed the change in surgical freedom along the contralateral MCA to provide objective evidence for patient selection. METHODS: Sixteen cadaveric specimens were studied. Through a pterional approach, the surgical freedom was calculated moving distally along the contralateral MCA at 5-mm increments...
October 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28987691/pharyngeal-airspace-of-asthmatic-individuals-and-those-suffering-from-obstructive-sleep-apnea-syndrome-study-by-cbct
#19
Fátima Karoline Araújo Alves Dultra, Alana Tavares, Joaquim de Almeida Dultra, Cristina Salles, Iêda Margarida Crusoé-Rebelo, Inessa Barbosa, Adelmir Souza-Machado
PURPOSE: The objective of the present study was to comparatively evaluate the oropharyngeal space of patients with obstructive sleep apnea syndrome (OSA) and asthma by means of Cone Beam Computed Tomography (CBCT) images. MATERIAL AND METHODS: The study included individuals with OSA and asthma (n=10), with OSA and without asthma (n=6), asthmatics without OSA (n=6) and healthy individuals (n=25). All patients were evaluated by a pneumologist and submitted to a nocturnal polysomnogram...
October 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28983488/neurovascular-function-recovery-after-focal-ischemic-stroke-by-enhancing-cerebral-collateral-circulation-via-peripheral-stimulation-mediated-interarterial-anastomosis
#20
Han-Chi Pan, Lun-De Liao, Yu-Chun Lo, Jia-Wei Chen, Han-Lin Wang, Li Yang, Yao-Wen Liang, Po-Yu Huang, Ming-Hsun Yang, You-Yin Chen
Current treatments for ischemic stroke have focused on the administration of a tissue plasminogen activator, although the associated side effects and subsequent reperfusion injury remain challenging. Peripheral electrical stimulation has shed light on therapeutic interventions for ischemia by increasing cerebral blood flow (CBF) to the target region through collateral circulation, although the mechanism remains elusive. Here, a focal photothrombotic ischemic (PTI) stroke was induced in the right hemispheric primary somatosensory forelimb cortex (S1FL) of rat brains, and the therapeutic effects of forelimb and hindlimb stimulation were characterized at the contralesional S1FL...
July 2017: Neurophotonics
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