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https://www.readbyqxmd.com/read/29656359/myocardial-infarct-size-reduction-provided-by-local-and-remote-ischaemic-preconditioning-references-values-from-the-hatter-cardiovascular-institute
#1
Xavier Rossello, Zhenhe He, Derek M Yellon
PURPOSE: To accurately estimate the effect size of both local or classic ischaemic preconditioning (IPC) and remote ischaemic preconditioning (RIPC) using a pooling data set of 91 animals. METHODS: We combined all the available mouse data collected from our Institute over the last 3 years regarding (i) local IPC (4 cycles of 5 min of global ischaemia/reperfusion injury, IRI, followed by 35-min ischaemia and 2-h reperfusion) in the Langendorff-isolated perfused mouse heart model and (ii) RIPC (3 cycles of 5 min of limb occlusion followed by 40-min ischaemia and 2-h reperfusion) in the in vivo mouse model...
April 14, 2018: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/29651554/dual-species-biofilm-of-listeria-monocytogenes-and-escherichia-coli-on-stainless-steel-surface
#2
Aline Zago de Grandi, Uelinton Manoel Pinto, Maria Teresa Destro
Listeria monocytogenes is a Gram-positive bacterium commonly associated with foodborne diseases. Due its ability to survive under adverse environmental conditions and to form biofilm, this bacterium is a major concern for the food industry, since it can compromise sanitation procedures and increase the risk of post-processing contamination. Little is known about the interaction between L. monocytogenes and Gram-negative bacteria on biofilm formation. Thus, in order to evaluate this interaction, Escherichia coli and L...
April 12, 2018: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/29649974/delayed-and-repeated-intranasal-delivery-of-bone-marrow-stromal-cells-increases-regeneration-and-functional-recovery-after-ischemic-stroke-in-mice
#3
Monica J Chau, Todd C Deveau, Xiaohuan Gu, Yo Sup Kim, Yun Xu, Shan Ping Yu, Ling Wei
BACKGROUND: Stroke is a leading cause of death and disability worldwide, yet there are limited treatments available. Intranasal administration is a novel non-invasive strategy to deliver cell therapy into the brain. Cells delivered via the intranasal route can migrate from the nasal mucosa to the ischemic infarct and show acute neuroprotection as well as functional benefits. However, there is little information about the regenerative effects of this transplantation method in the delayed phase of stroke...
April 12, 2018: BMC Neuroscience
https://www.readbyqxmd.com/read/29649411/the-in-vitro-differentiation-of-gdnf-gene-engineered-amniotic-fluid-derived-stem-cells-into-renal-tubular-epithelial-like-cells
#4
Ying Lu, Zhuojun Wang, Lu Chen, Jia Wang, Shulin Li, Caixia Liu, Dong Sun
Amniotic fluid is an alternative source of stem cells, and human amniotic fluid-derived stem cells (AFSCs) obtained from a small amount of amniotic fluid collected during the second trimester represent a novel source for use in regenerative medicine. These AFSCs are characterized by lower diversity, a higher proliferation rate and a wider differentiation capability than adult mesenchymal stem cells (MSCs). AFSCs are selected based on the cell surface marker c-kit receptor (CD117) using immunomagnetic sorting...
March 15, 2018: Stem Cells and Development
https://www.readbyqxmd.com/read/29644923/patients-characteristics-and-their-influence-on-course-of-fear-during-agoraphobic-symptom-provocation-may-ss-n-ri-treatment-compensate-unfavorable-individual-preconditions
#5
Jens Plag, Moritz B Petzold, Johanna Gechter, Carolin Liebscher, Andreas Ströhle
BACKGROUND: Patients' characteristics and antidepressants are discussed to be relevant in the context of phobic exposure. AIMS: To identify patients characteristics associated with a differential course of fear during disorder-specific symptom provocation as well as to elucidate the effect of selective serotonin-(noradrenalin-) reuptake inhibitors [SS(N)RI] on development of fear in the context of re-exposure to the phobic stimuli. METHODS: Twenty-eight clinically well-characterized patients with panic disorder and agoraphobia (PD/AG) were classified into subjects who show a reduction of fear ('Fear-') during a symptom provocation via a picture-based paradigm (T1) and those who did not ('Fear+')...
April 12, 2018: Nordic Journal of Psychiatry
https://www.readbyqxmd.com/read/29644488/brain-ischemic-preconditioning-protects-against-moderate-not-severe-transient-global-cerebral-ischemic-injury
#6
Jae-Chul Lee, Bich-Na Shin, Jeong Hwi Cho, Tae-Kyeong Lee, In Hye Kim, YooHun Noh, Sung-Su Kim, Hyang-Ah Lee, Young-Myeong Kim, Hyeyoung Kim, Jun Hwi Cho, Joon Ha Park, Ji Hyeon Ahn, Il Jun Kang, In Koo Hwang, Moo-Ho Won, Myoung Cheol Shin
Ischemic preconditioning (IPC) in the brain increases ischemic tolerance to subsequent ischemic insults. In this study, we examined whether IPC protects neurons and attenuates microgliosis or not in the hippocampus following severe transient global cerebral ischemia (TCI) in gerbils. Gerbils were assigned to 8 groups; 5- and 15-min sham operated groups, 5-min and 15-min TCI operated groups, IPC plus 5- and 15-min sham operated groups, and IPC plus 5- and 15-min TCI operated groups. IPC was induced by subjecting animals to 2-min transient ischemia 1 day before 5-min TCI for a typical transient ischemia and 15-min TCI for severe transient ischemia...
April 12, 2018: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29643975/physiological-hypoxia-enhances-stemness-preservation-proliferation-and-bidifferentiation-of-induced-hepatic-stem-cells
#7
Xiaosong Zhi, Jun Xiong, Mengchao Wang, Hongxia Zhang, Gang Huang, Jian Zhao, Xiaoyuan Zi, Yi-Ping Hu
Induced hepatic stem cells (iHepSCs) have great potential as donors for liver cell therapy due to their self-renewal and bipotential differentiation properties. However, the efficiency of bidifferentiation and repopulation efficiency of iHepSCs is relatively low. Recent evidence shows that physiological hypoxia, a vital factor within stem cell "niche" microenvironment, plays key roles in regulating tissue stem cell biological behaviors including proliferation and differentiation. In this study, we found that physiological hypoxia (10% O2 ) enhanced the stemness properties and promoted the proliferation ability of iHepSCs by accelerating G1/S transition via p53-p21 signaling pathway...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29643810/localized-delivery-of-cl-amidine-from-electrospun-polydioxanone-templates-to-regulate-acute-neutrophil-netosis-a-preliminary-evaluation-of-the-pad4-inhibitor-for-tissue-engineering
#8
Allison E Fetz, Indira Neeli, Karyl K Buddington, Robert W Read, Matthew P Smeltzer, Marko Z Radic, Gary L Bowlin
Upon interaction, neutrophils can potentially release neutrophil extracellular traps (NETs) on the surface of an implanted electrospun template, which may be a significant preconditioning event for implantable biomaterials of yet unknown consequences. In this study, we investigated the potential of polydioxanone templates as a delivery vehicle for Cl-amidine, an inhibitor of peptidyl arginase deiminase 4 (PAD4), and if drug elution could attenuate PAD4-mediated NETosis in the vicinity of implanted templates...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29643742/effects-of-interprofessional-education-for-medical-and-nursing-students-enablers-barriers-and-expectations-for-optimizing-future-interprofessional-collaboration-a-qualitative-study
#9
Sabine Homeyer, Wolfgang Hoffmann, Peter Hingst, Roman F Oppermann, Adina Dreier-Wolfgramm
Background: To ensure high quality patient care an effective interprofessional collaboration between healthcare professionals is required. Interprofessional education (IPE) has a positive impact on team work in daily health care practice. Nevertheless, there are various challenges for sustainable implementation of IPE. To identify enablers and barriers of IPE for medical and nursing students as well as to specify impacts of IPE for both professions, the 'Cooperative academical regional evidence-based Nursing Study in Mecklenburg-Western Pomerania' (Care-N Study M-V) was conducted...
2018: BMC Nursing
https://www.readbyqxmd.com/read/29643709/delayed-formation-of-hematomas-with-ethanol-preconditioning-in-experimental-intracerebral-hemorrhage-rats
#10
Hung-Yu Cheng, Li-Chuan Huang, Hsiao-Fen Peng, Jon-Son Kuo, Hock-Kean Liew, Cheng-Yoong Pang
Objective: Spontaneous intracerebral hemorrhage (ICH) accounts for 10%-15% of all strokes and causes high mortality and morbidity. In the previous study, we demonstrated that ethanol could aggravate the severity of brain injury after ICH by increasing neuroinflammation and oxidative stress. In this study, we further investigate the acute effects of ethanol on brain injury within 24 h after ICH. Materials and Methods: Totally, 66 male Sprague-Dawley rats were assigned randomly into two groups: saline pretreatment before ICH (saline + ICH), and ethanol pretreatment before ICH (ethanol + ICH)...
January 2018: Ci Ji Yi Xue za Zhi, Tzu-chi Medical Journal
https://www.readbyqxmd.com/read/29627096/the-social-empowerment-of-difference-the-potential-influence-of-para-sport
#11
REVIEW
Carla Filomena Silva, P David Howe
This article explores the significance of parasport culture in highlighting an emancipatory understanding of difference and enhancing social empowerment. Disability studies are used to illuminate the influence of ableist ideology on people with impairments. Rather than being suppressed, difference should be recognized and valued in parasport practices and ideologies, leading to a pluralist culture, in which farther and wider social emancipation can be grounded. Acceptance of difference is an absolute and essential precondition for parasport cultures to promote positive social change for people with disabilities...
May 2018: Physical Medicine and Rehabilitation Clinics of North America
https://www.readbyqxmd.com/read/29626142/collection-and-sharing-of-medical-information-and-medical-intelligence-m2i-in-nato-a-transversal-survey
#12
Gabriel Bedubourg, H Wiik, B Queyriaux, P Lausund, J-B Meynard
INTRODUCTION: There is a requirement for adequate medical expertise to be available throughout the range of potential future operations involving members of the North Atlantic Treaty Organization (NATO). The aim of this study was to assess the collection and sharing of medical intelligence and medical information (M2I) by NATO Nations, Partner Nations and NATO Command Structure and NATO Force Structure Headquarters (NCS/NFS HQs). MATERIALS AND METHODS: A transversal survey was conducted between December 2014 and March 2015 using a survey form on M2I sent to NATO Nations and Partnership for Peace (PfP) Nations as well as NCS/NFS HQs...
April 6, 2018: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/29625956/video-outpatient-consultations-a-case-study-of-real-world-implementation-at-macro-meso-and-micro-level
#13
Trish Greenhalgh, Sara Shaw, Joseph Wherton, Shanti Vijayaraghavan, Joanne Morris, Satya Bhattacharya, Philippa Hanson, Desirée Campbell-Richards, Seendy Ramoutar, Anna Collard, Isabel Hodkinson
BACKGROUND: There is much interest in virtual consultations using video technology. Randomized controlled trials have shown video consultations to be acceptable, safe, and effective in selected conditions and circumstances. But this model has rarely been mainstreamed and sustained in real-world settings. OBJECTIVE: The study sought to (1) define good practice and inform implementation of video outpatient consultations and (2) generate transferable knowledge about challenges to scaling up and routinizing this service model...
February 19, 2018: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/29623935/neuroprotective-effect-of-ischemic-postconditioning-on-sciatic-nerve-transection
#14
Xiao-Bin Zhou, Na Liu, Dong Wang, De-Xin Zou, Chang-Wei Wei, Jun-Lin Zhou
Ischemic preconditioning or postconditioning has been shown to have neuroprotective effect on cerebral ischemia, but it has not been studied in peripheral nerve injury. In this study, a rat model of sciatic nerve transection was established, and subjected to three cycles of ischemia for 10 minutes + reperfusion for 10 minutes, once a day. After ischemic postconditioning, serum insulin-like growth factor 1 expression increased; sciatic nerve Schwann cell myelination increased; sensory function and motor function were restored...
March 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/29622397/the-route-and-timing-of-hydrogen-sulfide-therapy-critically-impacts-intestinal-recovery-following-ischemia-and-reperfusion-injury
#15
Amanda R Jensen, Natalie A Drucker, Jan P Te Winkel, Michael J Ferkowicz, Troy A Markel
PURPOSE: Hydrogen sulfide (H2 S) has many beneficial properties and may serve as a novel treatment in patients suffering from intestinal ischemia-reperfusion injury (I/R). The purpose of this study was to examine the method of delivery and timing of administration of H2 S for intestinal therapy during ischemic injury. We hypothesized that 1) route of administration of hydrogen sulfide would impact intestinal recovery following acute mesenteric ischemia and 2) preischemic H2 S conditioning using the optimal mode of administration as determined above would provide superior protection compared to postischemic application...
March 6, 2018: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29621201/remote-ischemic-preconditioning-does-not-affect-the-release-of-humoral-factors-in-propofol-anesthetized-cardiac-surgery-patients-a-secondary-analysis-of-the-ripheart-study
#16
Julia Ney, Katleen Hoffmann, Patrick Meybohm, Andreas Goetzenich, Sandra Kraemer, Carina Benstöm, Nina C Weber, Johannes Bickenbach, Rolf Rossaint, Gernot Marx, Kai Zacharowski, Jürgen Bernhagen, Christian Stoppe
In contrast to several smaller studies, which demonstrate that remote ischemic preconditioning (RIPC) reduces myocardial injury in patients that undergo cardiovascular surgery, the RIPHeart study failed to demonstrate beneficial effects of troponin release and clinical outcome in propofol-anesthetized cardiac surgery patients. Therefore, we addressed the potential biochemical mechanisms triggered by RIPC. This is a predefined prospective sub-analysis of the randomized and controlled RIPHeart study in cardiac surgery patients ( n = 40) that was recently published...
April 5, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29617505/evaluation-of-the-effects-of-atorvastatin-and-ischemic-postconditioning-preventing-on-the-ischemia-and-reperfusion-injury-experimental-study-in-rats
#17
Henrique Budib Dorsa Pontes, José Carlos Dorsa Vieira Pontes, Euler de Azevedo Neto, Giovanna Serra da Cruz Vendas, João Victor Cunha Miranda, Letícia do Espírito Santos Dias, João Victor Durães Gomes Oliva, Murilo Henrique Martins de Almeida, Ian de Oliveira Chaves, Tricia Luna Sampaio, Carlos Henrique Marques Dos Santos, Doroty Mesquita Dourado
INTRODUCTION: Reperfusion injury leads to systemic morphological and functional pathological alterations. Some techniques are already estabilished to attenuate the damage induced by reperfusion. Ischemic preconditioning is one of the standard procedures. In the last 20 years, several experimental trials demonstrated that the ischemic postconditioning presents similar effectiveness. Recently experimental trials demonstrated that statins could be used as pharmacological preconditioning...
January 2018: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29617003/the-effect-of-mitochondrial-complex-i-linked-respiration-by-isoflurane-is-independent-of-mitochondrial-nitric-oxide-production
#18
Fuqi Xu, Shigang Qiao, Hua Li, Yanjun Deng, Chen Wang, Jianzhong An
BACKGROUND: Anesthetic preconditioning (APC) of the myocardium is mediated in part by reversible alteration of mitochondrial function. Nitric oxide (NO) inhibits mitochondrial respiration and may mediate APC-induced cardioprotection. In this study, the effects of isoflurane on different states of mitochondrial respiration during the oxidation of complex I-linked substrates and the role of NO were investigated. METHODS: Mitochondria were isolated from Sprague-Dawley rat hearts...
February 1, 2018: Cardiorenal Medicine
https://www.readbyqxmd.com/read/29615705/gdnf-expressing-macrophages-mitigate-loss-of-dopamine-neurons-and-improve-parkinsonian-symptoms-in-mitopark-mice
#19
Cang Chen, Xiuhua Li, Guo Ge, Jingwei Liu, K C Biju, Suzette D Laing, Yusheng Qian, Cori Ballard, Zhixu He, Eliezer Masliah, Robert A Clark, Jason C O'Connor, Senlin Li
Glial cell line-derived neurotrophic factor (GDNF) is the most potent neuroprotective agent tested in cellular and animal models of Parkinson's disease (PD). However, CNS delivery of GDNF is restricted by the blood-brain barrier (BBB). Using total body irradiation as transplant preconditioning, we previously reported that hematopoietic stem cell (HSC) transplantation (HSCT)-based macrophage-mediated gene therapy could deliver GDNF to the brain to prevent degeneration of nigrostriatal dopamine (DA) neurons in an acute murine neurotoxicity model...
April 3, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29610077/fast-quasi-newton-algorithms-for-penalized-reconstruction-in-emission-tomography-and-further-improvements-via-preconditioning
#20
Yu-Jung Tsai, Alexandre Bousse, Matthias J Ehrhardt, Charles W Stearns, Sangtae Ahn, Brian F Hutton, Simon Arridge, Kris Thielemans
This paper reports on the feasibility of using a quasi-Newton optimization algorithm, limited-memory Broyden-Fletcher-Goldfarb-Shanno with boundary constraints (L-BFGS-B), for penalized image reconstruction problems in emission tomography (ET). For further acceleration, an additional preconditioning technique based on a diagonal approximation of the Hessian was introduced. The convergence rate of L-BFGS-B and the proposed preconditioned algorithm (L-BFGS-B-PC) was evaluated with simulated data with various factors, such as the noise level, penalty type, penalty strength and background level...
April 2018: IEEE Transactions on Medical Imaging
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