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https://www.readbyqxmd.com/read/28334019/cell-survival-and-differentiation-with-nanocrystalline-glass-like-carbon-using-substantia-nigra-dopaminergic-cells-derived-from-transgenic-mouse-embryos
#1
Noela Rodriguez-Losada, Pablo Romero, Guillermo Estivill-Torrús, Roberto Guzmán de Villoria, Jose A Aguirre
Regenerative medicine requires, in many cases, physical supports to facilitate appropriate cellular architecture, cell polarization and the improvement of the correct differentiation processes of embryonic stem cells, induced pluripotent cells or adult cells. Because the interest in carbon nanomaterials has grown within the last decade in light of a wide variety of applications, the aim of this study was to test and evaluate the suitability and cytocompatibility of a particular nanometer-thin nanocrystalline glass-like carbon film (NGLC) composed of curved graphene flakes joined by an amorphous carbon matrix...
2017: PloS One
https://www.readbyqxmd.com/read/28331079/characterization-and-vaccine-potential-of-membrane-vesicles-produced-by-francisella-noatunensis-sup-orientalis-in-an-adult-zebrafish-model
#2
Leidy Lagos, Julia I Tandberg, Urska Repnik, Preben Boysen, Erik Ropstad, Deepa Varkey, Ian T Paulsen, Hanne C Winther-Larsen
Vaccine development against extracellular bacteria has been important for the sustainability of the aquaculture industry. In contrast, infections with intracellular pathogens remain largely an unresolved problem. Francisella noatunensis subspecies orientalis (Fno) are Gram-negative, facultative intracellular bacteria that cause the disease francisellosis in fish. Francisellosis is commonly characterized as a chronic granulomatous disease with high morbidity and can result in high mortality depending on the host...
March 22, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28330969/influence-of-the-coronary-circulation-on-thermal-tolerance-and-cardiac-performance-during-warming-in-rainbow-trout
#3
Andreas Ekström, Michael Axelsson, Albin Gräns, Jeroen Brijs, Erik Sandblom
Thermal tolerance in fish may be related to an oxygen limitation of cardiac function. While the hearts of some fish species receive oxygenated blood via a coronary circulation, the influence of this oxygen supply on thermal tolerance and cardiac performance during warming remain unexplored. Here, we analyzed the effect in vivo of acute warming on coronary blood flow in adult sexually mature rainbow trout (Onchorhynchus mykiss), and the consequences of chronic coronary ligation on cardiac function and thermal tolerance in juvenile trout...
February 22, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28320384/diagnostic-accuracy-incremental-yield-and-prognostic-value-of-determine-tb-lam-for-routine-diagnostic-testing-for-tuberculosis-in-hiv-infected-patients-requiring-acute-hospital-admission-in-south-africa-a-prospective-cohort
#4
Stephen D Lawn, Andrew D Kerkhoff, Rosie Burton, Charlotte Schutz, Andrew Boulle, Monica Vogt, Ankur Gupta-Wright, Mark P Nicol, Graeme Meintjes
BACKGROUND: We previously reported that one-third of HIV-positive adults requiring medical admission to a South African district hospital had laboratory-confirmed tuberculosis (TB) and that almost two-thirds of cases could be rapidly diagnosed using Xpert MTB/RIF-testing of concentrated urine samples obtained on the first day of admission. Implementation of urine-based, routine, point-of-care TB screening is an attractive intervention that might be facilitated by use of a simple, low-cost diagnostic tool, such as the Determine TB-LAM lateral-flow rapid test for HIV-associated TB...
March 21, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28317180/anti-acsa-2-defines-a-novel-monoclonal-antibody-for-prospective-isolation-of-living-neonatal-and-adult-astrocytes
#5
Christina G Kantzer, Camille Boutin, Ina D Herzig, Carolina Wittwer, Sandy Reiß, Marie Catherine Tiveron, Jan Drewes, Thomas D Rockel, Stefanie Ohlig, Jovica Ninkovic, Harold Cremer, Sandra Pennartz, Melanie Jungblut, Andreas Bosio
Astrocytes are the most abundant cell type of the central nervous system and cover a broad range of functionalities. We report here the generation of a novel monoclonal antibody, anti-astrocyte cell surface antigen-2 (Anti-ACSA-2). Flow cytometry, immunohistochemistry and immunocytochemistry revealed that Anti-ACSA-2 reacted specifically with a not yet identified glycosylated surface molecule of murine astrocytes at all developmental stages. It did not show any labeling of non-astroglial cells such as neurons, oligodendrocytes, NG2(+) cells, microglia, endothelial cells, leukocytes, or erythrocytes...
March 20, 2017: Glia
https://www.readbyqxmd.com/read/28314796/prehypertensive-blood-pressures-and-regional-cerebral-blood-flow-independently-relate-to-cognitive-performance-in-midlife
#6
J Richard Jennings, Matthew F Muldoon, Christopher Ryan, H Michael Gach, Alicia Heim, Lei K Sheu, Peter J Gianaros
BACKGROUND: High blood pressure is thought to contribute to dementia in late life, but our understanding of the relationship between individual differences in blood pressure (BP) and cognitive functioning is incomplete. In this study, cognitive performance in nonhypertensive midlife adults was examined as a function of resting BP and regional cerebral blood flow (rCBF) responses during cognitive testing. We hypothesized that BP would be negatively related to cognitive performance and that cognitive performance would also be related to rCBF responses within areas related to BP control...
March 17, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28298963/potential-role-of-imaging-in-assessing-harmful-effects-on-spermatogenesis-in-adult-testes-with-varicocele
#7
REVIEW
Athina C Tsili, Olga N Xiropotamou, Anastasios Sylakos, Vasilios Maliakas, Nikolaos Sofikitis, Maria I Argyropoulou
Varicocele is characterized by an abnormal dilatation and retrograde blood flow in the spermatic veins. Varicocele is the leading correctable cause of male infertility. Although it is highly prevalent in infertile men, it is also observed in individuals with normal fertility. Determining which men are negatively affected by varicocele would enable clinicians to better select those men who will benefit from treatment. To assess the functional status of the testes in men with varicocele, color Doppler sonographic parameters were evaluated...
February 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28298663/lean-flow-optimizing-cardiopulmonary-bypass-equipment-and-flow-for-obese-patients-a-technique-article
#8
Joshua M Blessing, Jeffrey B Riley
The goal of this chart review was to investigate the use of down-sized cardiopulmonary bypass (CPB) circuits for obese patients. The effects of transitioning from larger to smaller oxygenators, reservoirs, and arteriovenous tubing loops were evaluated through a retrospective review of 2,816 adult non-congenital procedure perfusion records. This technique report and case series is a continuation of our original prescriptive CPB circuit quality improvement project. An algorithm was derived to adjust body surface area (BSA) to lower body mass index (BMI) to provide down-sized extracorporeal circuit components capable of meeting the metabolic needs of the patient...
March 2017: Journal of Extra-corporeal Technology
https://www.readbyqxmd.com/read/28298264/ecological-momentary-assessment-in-behavioral-research-addressing-technological-and-human-participant-challenges
#9
Lora E Burke, Saul Shiffman, Edvin Music, Mindi A Styn, Andrea Kriska, Asim Smailagic, Daniel Siewiorek, Linda J Ewing, Eileen Chasens, Brian French, Juliet Mancino, Dara Mendez, Patrick Strollo, Stephen L Rathbun
BACKGROUND: Ecological momentary assessment (EMA) assesses individuals' current experiences, behaviors, and moods as they occur in real time and in their natural environment. EMA studies, particularly those of longer duration, are complex and require an infrastructure to support the data flow and monitoring of EMA completion. OBJECTIVE: Our objective is to provide a practical guide to developing and implementing an EMA study, with a focus on the methods and logistics of conducting such a study...
March 15, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28295565/characterization-of-left-ventricle-energy-loss-in-healthy-adults-using-vector-flow-mapping-preliminary-results
#10
Lei Xu, Chao Sun, Xiaoli Zhu, Weihua Liu, Shengjun Ta, Dan Zhao, Feifei Wang, Liwen Liu
BACKGROUND: Energy loss (EL) is a new quantitative hemodynamic index based on vector flow mapping (VFM). This study aimed to characterize EL of the left ventricle (LV) in healthy adults. METHODS: Fifty-one healthy adults were enrolled in this study. EL of LV was analyzed frame by frame using color Doppler images of a standard apical three-chamber dynamic view on an offline VFM workstation. The average EL of systole and diastole was calculated, and the results were averaged over three cardiac cycles...
March 14, 2017: Echocardiography
https://www.readbyqxmd.com/read/28291511/%C3%A2-intrathecal-analgesia-by-bupivacaine-is-not-enhanced-by-coadministration-of-morphine-in-patients-with-severe-cancer-related-pain-a-randomized-double-blind-cross-over-study
#11
Ingalill Reif, Anders Wincent, Carl-Olav Stiller
The objective of this randomized double blind cross-over trial was to determine if patients with severe cancer-related pain and inadequate response to systemic opioids prefer intrathecal (IT) pain relief with a combination of bupivacaine and morphine or bupivacaine only. Adult patients with cancer-related pain (n = 23) scheduled for IT analgesia at the Pain Center at the Karo-linska University Hospital Solna, Stockholm, Sweden, were included. The optimal individual flow rate of IT bupivacaine (2 mg/mL) in addition to bolus doses was titrated and maintained for 4 days...
March 14, 2017: International Journal of Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28289611/comparison-of-characteristics-of-human-amniotic-membrane-and-human-adipose-tissue-derived-mesenchymal-stem-cells
#12
Khadijeh Dizaji Asl, Hajar Shafaei, Jafar Soleimani Rad, Hojjat Ollah Nozad
BACKGROUND: Mesenchymal stem cells (MSCs) are ideal candidates for treatment of diseases. Amniotic membranes are an inexpensive source of MSCs (AM-MSC) without any donor site morbidity in cell therapy. Adipose tissue derived stem cells (ASCs) are also suitable cells for cell therapy. There is discrepancy in CD271 expression among MSCs from different sources. In this study, the characteristics of AM-MSC and ASCs and CD271 expression were compared. METHODS: Adult adipose tissue samples were obtained from patients undergoing elective surgical procedure, and samples of amniotic membrane were collected immediately after caesarean operation...
January 2017: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/28289530/consumption-of-energy-beverage-is-associated-with-attenuation-of-arterial-endothelial-flow-mediated-dilatation
#13
John P Higgins, Benjamin Yang, Nikki E Herrin, Santi Yarlagadda, George T Le, Brandon L Ortiz, Asif Ali, Stephen C Infanger
AIM: To investigate whether consumption of an energy drink will acutely impair endothelial function in young healthy adults. METHODS: Energy drinks are being consumed more and more worldwide, and have been associated with some deaths in adolescents and young adults, especially when consumed while exercising. After fasting and not smoking for at least 8 h prior, eleven medical students (9 males) received an electrocardiogram, blood pressure and pulse check, and underwent baseline testing (BL) of endothelial function using the technique of endothelium-dependent flow mediated dilatation (FMD) with high-resolution ultrasound (according to recommended guidelines of the University of Wisconsin Atherosclerosis Imaging Research Program Core Laboratory)...
February 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28289416/specific-and-efficient-uptake-of-surfactant-free-poly-lactic-acid-nanovaccine-vehicles-by-mucosal-dendritic-cells-in-adult-zebrafish-after-bath-immersion
#14
Julien Rességuier, Emilie Delaune, Anne-Line Coolen, Jean-Pierre Levraud, Pierre Boudinot, Dominique Le Guellec, Bernard Verrier
Activation of mucosal immunity is a key milestone for next-generation vaccine development. Biocompatible polymer-based nanoparticles (NPs) are promising vectors and adjuvants for mucosal vaccination. However, their in vivo uptake by mucosae and their biodistribution in antigen-presenting cells (APCs) need to be better understood to optimize mucosal nanovaccine designs. Here, we assessed if APCs are efficiently targeted in a spontaneous manner by surfactant-free poly(lactic acid) nanoparticles (PLA-NPs) after mucosal administration...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28287891/associations-of-resting-heart-rate-with-endothelium-dependent-vasodilation-and-shear-rate
#15
Jitanan Laosiripisan, Kristin L Parkhurst, Hirofumi Tanaka
Heart rate is an independent risk factor for cardiovascular disease and a hemodynamic factor that can modulate blood flow as it affects the frequency of shear stimuli acting on the arterial wall. However, the association between heart rate and endothelium-dependent vasodilation remains highly controversial. We determined the association between heart rate at rest and endothelium-dependent vasodilation in 98 apparently healthy adults (18-63 years). The mild and positive association between heart rate and flow-mediated dilation (FMD) was no longer significant when age and sex or baseline diameter were controlled for...
2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28286823/protocol-adherence-for-severe-sepsis-and-septic-shock-management-in-the-emergency-department-a-clinical-audit
#16
Mostafa Alavi-Moghaddam, Ali Anvari, Reaza Soltani Delgosha, Hamid Kariman
INTRODUCTION: Although significant development in the field of medicine is achieved, sepsis is still a major issue threatening humans' lives. This study was aimed to audit the management of severe sepsis and septic shock patients in emergency department (ED) according to the present standard guidelines. METHOD: This is a prospective audit on approaching adult septic patients who were admitted to ED. The audit checklist was created based on the protocols of Surviving Sepsis Campaign and British Royal College recommendations...
2017: Emergency (Tehran, Iran)
https://www.readbyqxmd.com/read/28280397/pharmacokinetics-and-outcome-of-tazobactam-piperacillin-in-japanese-patients-undergoing-low-flow-continuous-renal-replacement-therapy-dosage-considerations
#17
Hanako Kohama, Takeshi Ide, Kazuro Ikawa, Norifumi Morikawa, Shinichi Nishi
BACKGROUND: Tazobactam/piperacillin (TAZ/PIPC), which is often combined with continuous renal replacement therapy (CRRT), induces renal excretion and is thought to have a high component removal rate for blood purification. CRRT procedures vary depending on the country, region, and institution. It is not clear whether the dose of TAZ/PIPC for use in Japan can be determined based on studies conducted in other countries. Therefore, in this study, we examined the suitability of recommended dose in Japan...
2017: Clinical Pharmacology: Advances and Applications
https://www.readbyqxmd.com/read/28261472/ecological-speciation-by-temporal-isolation-in-a-population-of-the-stonefly-leuctra-hippopus-plecoptera-leuctridae
#18
Louis Boumans, Silje Hogner, John Brittain, Arild Johnsen
Stream dwelling invertebrates are ideal candidates for the study of ecological speciation as they are often adapted to particular environmental conditions within a stream and inhabit only certain reaches of a drainage basin, separated by unsuitable habitat. We studied an atypical population of the stonefly Leuctra hippopus at a site in central Norway, the Isterfoss rapids, in relation to three nearby and two remote conspecific populations. Adults of this population emerge about a month earlier than those of nearby populations, live on large boulders emerging from the rapids, and are short-lived...
March 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28261153/non-invasive-respiratory-impedance-enhances-cerebral-perfusion-in-healthy-adults
#19
Christopher G Favilla, Ashwin B Parthasarathy, John A Detre, Arjun G Yodh, Michael T Mullen, Scott E Kasner, Kimberly Gannon, Steven R Messé
Optimization of cerebral blood flow (CBF) is the cornerstone of clinical management in a number of neurologic diseases, most notably ischemic stroke. Intrathoracic pressure influences cardiac output and has the potential to impact CBF. Here, we aim to quantify cerebral hemodynamic changes in response to increased respiratory impedance (RI) using a non-invasive respiratory device. We measured cerebral perfusion under varying levels of RI (6 cm H2O, 9 cm H2O, and 12 cm H2O) in 20 healthy volunteers. Simultaneous measurements of microvascular CBF and middle cerebral artery mean flow velocity (MFV), respectively, were performed with optical diffuse correlation spectroscopy and transcranial Doppler ultrasound...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28254880/formation-and-function-of-intracardiac-valve-cells-in-the-drosophila-heart
#20
Kay Lammers, Bettina Abeln, Mirko Hüsken, Christine Lehmacher, Olympia Ekaterini Psathaki, Esther Alcorta, Heiko Meyer, Achim Paululat
Drosophila harbors a simple tubular heart that ensures hemolymph circulation within the body. The heart is built by a few different cell types, including cardiomyocytes that define the luminal heart channel and ostia cells that constitute openings in the heart wall allowing hemolymph to enter the heart chamber. Regulation of flow directionality within a tube, such as blood flow in arteries or insect hemolymph within the heart lumen, requires a dedicated gate, valve, or flap-like structure that prevents backflow of fluids...
March 2, 2017: Journal of Experimental Biology
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