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Morphological assessment

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https://www.readbyqxmd.com/read/29778081/molecular-aspect-of-silver-nanoparticles-regulated-embryonic-development-in-zebrafish-danio-rerio-by-oct-4-expression
#1
Biplab Sarkar, Suresh K Verma, Javed Akhtar, Surya Prakash Netam, Sanjay Kr Gupta, Pritam Kumar Panda, Koel Mukherjee
With the enhancement of commercial manifestation of silver nanoparticles, concerned has risen on their accumulation in aquatic system and consequent effects on fish development and metabolism. In this study, experiments were conducted to assess the impacts of silver nanoparticles on early life cycles of fish considering Zebrafish (Danio rerio) as experimental model. Silver nanoparticles were synthesized through chemical reduction method and characterized through UV-visible spectroscopy, dynamic light scattering (DLS), and HR-TEM...
May 4, 2018: Chemosphere
https://www.readbyqxmd.com/read/29777326/sirolimus-coated-poly-l-lactic-acid-modified-polypropylene-mesh-with-minimal-intra-peritoneal-adhesion-formation-in-a-rat-model
#2
S Lu, W Hu, Z Zhang, Z Ji, T Zhang
PURPOSE: This study evaluated the manufacturing method and anti-adhesion properties of a new composite mesh in the rat model, which was made from sirolimus (SRL) grafts on a poly(L-lactic acid) (PLLA)-modified polypropylene (PP) hernia mesh. METHODS: PLLA was first grafted onto argon-plasma-treated native PP mesh through catalysis of stannous chloride. SRL was grafted onto the surface of PP-PLLA meshes using catalysis of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) and 4-dimethylaminopyridine (DMAP) in a CH2 Cl2 solvent...
May 18, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/29776771/association-between-pain-severity-and-clinicohistopathologic-findings-in-the-mandibular-canal-and-inferior-alveolar-nerve-of-patients-with-advanced-mandibular-osteoradionecrosis
#3
Yujiro Hiraoka, Masaya Akashi, Satoshi Wanifuchi, Junya Kusumoto, Manabu Shigeoka, Takumi Hasegawa, Kazunobu Hashikawa, Hiroto Terashi, Takahide Komori
OBJECTIVE: Pain is one of the most problematic symptoms in patients with osteoradionecrosis of the jaws. This study investigated the associations between pain severity and morphologic alterations of the mandibular canal and inferior alveolar nerve, in respective computerized tomography images and resected specimens of mandibular osteoradionecrosis. STUDY DESIGN: We assessed 14 lesions in 13 patients who underwent segmental mandibulectomy for surgical debridement and simultaneous reconstruction with free fibula flap (1 patient exhibited bilateral lesions)...
April 16, 2018: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29775893/puerarin-prevents-vascular-endothelial-injury-through-suppression-of-nf-%C3%AE%C2%BAb-activation-in-lps-challenged-human-umbilical-vein-endothelial-cells
#4
Hua-Fei Deng, Sha Wang, Lian Li, Qin Zhou, Wan-Bei Guo, Xiao-Li Wang, Mei-Dong Liu, Ke Liu, Xian-Zhong Xiao
OBJECTIVE: In the present study, we aimed to explore the effects of puerarin on vascular endothelial cell injury induced by lipopolysaccharide (LPS) and its underlying mechanisms. METHODS: The cell viability and morphological changes were assessed using the cell counting kit-8 (CCK-8) assay and 4´,6-diamidino-2-phenylindole (DAPI) staining, respectively. The levels of tumor necrosis factor-alpha (TNF-α), interleukin-1β (IL-1β), monocyte/macrophage chemotactic protein-1 (MCP-1), IL-8, intercellular cell adhesion molecule-1 (ICAM-1), thrombomodulin (TM) and plasminogen activator inhibitor-1 (PAI-1) in cell culture supernatant were determined by the enzyme-linked immunosorbent assay (ELISA)...
May 15, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29775822/nanocomposite-thin-films-ag-0-np-tio-2-in-the-efficient-removal-of-micro-pollutants-from-aqueous-solutions-a-case-study-of-tetracycline-and-sulfamethoxazole-removal
#5
Alka Tiwari, Alok Shukla, Lalliansanga, Diwakar Tiwari, Seung Mok Lee
The aim of this communication is to synthesize novel Nanocomposite thin film materials (Ag0 (NP)/TiO2 ) using the template process. Surface morphology of materials was obtained by the Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) analyses. The presence of doped Ag-nanoparticles was confirmed by the TEM images along with the SEM-EDX analyses. The Atomic Force Microscopic images were demonstrated the surface roughness and thickness of Nanocomposite thin films. X-ray diffraction analysis confirmed that TiO2 was predominantly present to its anatase mineral phase...
May 15, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29775723/a-scale-out-approach-towards-neural-induction-of-human-induced-pluripotent-stem-cells-for-neurodevelopmental-toxicity-studies
#6
Cláudia C Miranda, Tiago G Fernandes, Sandra N Pinto, Manuel Prieto, M Margarida Diogo, Joaquim M S Cabral
Stem cell's unique properties confer them a multitude of potential applications in the fields of cellular therapy, disease modelling and drug screening fields. In particular, the ability to differentiate neural progenitors (NP) from human induced pluripotent stem cells (hiPSCs) using chemically-defined conditions provides an opportunity to create a simple and straightforward culture platform for application in these fields. Here, we demonstrated that hiPSCs are capable of undergoing neural commitment inside microwells, forming characteristic neural structures resembling neural rosettes and further give rise to glial and neuronal cells...
May 15, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29775658/hydroxysafflor-yellow-a-protects-brain-microvascular-endothelial-cells-against-oxygen-glucose-deprivation-reoxygenation-injury-involvement-of-inhibiting-autophagy-via-class-i-pi3k-akt-mtor-signaling-pathway
#7
Guang Yang, Ning Wang, Sai Wang Seto, Dennis Chang, Huazheng Liang
The present study aimed to test whether Hydroxysafflor yellow A (HSYA) protects the brain microvascular endothelial cells (BMECs) injury induced by oxygen glucose deprivation/reoxygenation (OGD/R) via the PI3K/Akt/mTOR autophagy signaling pathway. Primary rat BMECs were cultured and identified by the expression of factor VIII-related antigen before being exposed to OGD/R to imitate ischemia/reperfusion (I/R) damage in vitro. The protective effect of HSYA was evaluated by assessing (1) cellular morphologic and ultrastructural changes; (2) cell viability and cytotoxicity; (3) transendothelial electrical resistance (TEER) of monolayer BMECs; (4) cell apoptosis; (5) fluorescence intensity of LC3B; (6) LC3 mRNA expression; (7) protein expressions of LC3, Beclin-1, Zonula occludens-1 (ZO-1), phospho-Akt (p-Akt), Akt, phospho-mTOR (p-mTOR) and mTOR...
May 15, 2018: Brain Research Bulletin
https://www.readbyqxmd.com/read/29775153/feasibility-safety-and-changes-in-systolic-blood-pressure-associated-with-endovascular-revascularization-of-symptomatic-and-chronically-occluded-cervical-internal-carotid-artery-using-a-newly-suggested-radiographic-classification-of-chronically-occluded-cervical
#8
David Hasan, Mario Zanaty, Robert M Starke, Elias Atallah, Nohra Chalouhi, Pascal Jabbour, Amit Singla, Waldo R Guerrero, Daichi Nakagawa, Edgar A Samaniego, Nnenna Mbabuike, Rabih G Tawk, Adnan H Siddiqui, Elad I Levy, Roberta L Novakovic, Jonathan White, Clemens M Schirmer, Thomas G Brott, Hussain Shallwani, L Nelson Hopkins
OBJECTIVE The overall risk of ischemic stroke from a chronically occluded internal carotid artery (COICA) is around 5%-7% per year despite receiving the best available medical therapy. Here, authors propose a radiographic classification of COICA that can be used as a guide to determine the technical success and safety of endovascular recanalization for symptomatic COICA and to assess the changes in systemic blood pressure following successful revascularization. METHODS The radiographic images of 100 consecutive subjects with COICA were analyzed...
May 18, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29774958/effect-of-trapping-method-on-species-identification-of-phlebotomine-sandflies-by-maldi-tof-ms-protein-profiling
#9
P Halada, K Hlavackova, J Risueño, E Berriatua, P Volf, V Dvorak
Sandflies (Diptera: Psychodidae) (Newstead, 1911) are blood-feeding insects that transmit human pathogens including Leishmania (Trypanosomatida: Trypanosomatidae) parasites, causative agents of the leishmaniases. To elucidate Leishmania transmission cycles, conclusive identification of vector species is essential. Molecular approaches including matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) protein profiling have recently emerged to complement morphological identification...
May 18, 2018: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/29774887/association-of-difference-in-coronary-sinus-diameter-by-computed-tomographic-angiography-between-patients-in-and-not-in-stable-atherosclerotic-plaque-s
#10
Yancui Li, Wen Liang, Jianchun Zhang, Ruchen Peng
BACKGROUND Pathological finding fail to describe the morphology of coronary arterial plaques. Retrograde cardiac arteriography is a complicated procedure and does not detect all left posterior and marginal veins of the heart. Magnetic resonance angiography has long scan time and low spatial resolution. The objective of the present study was to assess the possible utility of the difference in coronary sinus diameter to quantify stable atherosclerotic plaque(s) using 256-slice coronary computed tomographic angiography...
May 18, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29774402/subtrochanteric-and-diaphyseal-femoral-fractures-in-hypophosphatasia-not-atypical-at-all
#11
F Genest, L Seefried
Risk for subtrochanteric and diaphyseal femoral fractures is considered increased in patients with hypophosphatasia (HPP). Evaluating a large cohort of HPP patients, we could for the first time quantify the prevalcence and identify both morphometric features as well as predisposing factors for this complication of severe HPP. INTRODUCTION: Subtrochanteric and diaphyseal femoral fractures have been associated with both, long-term antiresorptive treatment and metabolic bone disorders, specifically Hypophosphatasia (HPP)...
May 17, 2018: Osteoporosis International
https://www.readbyqxmd.com/read/29774203/small-rho-gtpases-and-the-effector-vipa-mediate-the-invasion-of-epithelial-cells-by-filamentous-legionella-pneumophila
#12
Akriti Prashar, María Eugenia Ortiz, Stefanie Lucarelli, Elizabeth Barker, Zohreh Tabatabeiyazdi, Feras Shamoun, Deepa Raju, Costin Antonescu, Cyril Guyard, Mauricio R Terebiznik
Legionella pneumophila (Lp) exhibits different morphologies with varying degrees of virulence. Despite their detection in environmental sources of outbreaks and in respiratory tract secretions and lung autopsies from patients, the filamentous morphotype of Lp remains poorly studied. We previously demonstrated that filamentous Lp invades lung epithelial cells (LECs) and replicates intracellularly in a Legionella containing vacuole. Filamentous Lp activates β1integrin and E-cadherin receptors at the surface of LECs leading to the formation of actin-rich cell membrane structures we termed hooks and membrane wraps...
2018: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29774170/liquid-biopsy-of-vitreous-reveals-an-abundant-vesicle-population-consistent-with-the-size-and-morphology-of-exosomes
#13
Yuanjun Zhao, Sarah R Weber, Joshua Lease, Mariano Russo, Christopher A Siedlecki, Li-Chong Xu, Han Chen, Weiwei Wang, Michael Ford, Rafael Simó, Jeffrey M Sundstrom
Purpose: To investigate the molecular components of the vitreous in order to better understand retinal physiology and disease. Methods: Vitreous was acquired from patients undergoing vitrectomy for macular hole and/or epiretinal membrane, postmortem donors, and C57BL/6J mice. Unbiased proteomic analysis was performed via electrospray ionization tandem mass spectrometry (MS/MS). Gene ontology analysis was performed and results were confirmed with transmission electron microscopy, atomic force microscopy, and nanoparticle tracking analysis (NTA)...
May 2018: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/29773466/in-vivo-morphologic-comparison-of-saphenous-vein-grafts-and-native-coronary-arteries-following-non-st-elevation-myocardial-infarction
#14
Tom Hsun-Wei Huang, Kalpa De Silva, Usaid K Allahwala, Edward J Danson, Pasi K Karjalainen, Olli A Kajander, Ravinay Bhindi
OBJECTIVE: This study aimed to assess the pathophysiological differences between saphenous vein grafts (SVG) and native coronary arteries (NCA) following presentation with non-ST elevated myocardial infarction (NSTEMI). BACKGROUND: There is accelerated pathogenesis of de novo coronary disease in harvested SVG following coronary artery bypass (CABG) surgery, which contributes to both early and late graft failure, and is also causal in adverse outcomes following vein graft PCI...
April 16, 2018: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29773392/design-of-reusable-novel-membranes-based-on-bacterial-cellulose-and-chitosan-for-the-filtration-of-copper-in-wastewaters
#15
Leire Urbina, Olatz Guaresti, Jesús Requies, Nagore Gabilondo, Arantxa Eceiza, Maria Angeles Corcuera, Aloña Retegi
This study has been carried out to design novel, environmentally friendly membranes by in situ and ex situ routes based on bacterial cellulose (BC) as a template for the chitosan (Ch) as functional entity for the elimination of copper in wastewaters. Two routes led to bionanocomposites with different aspect and physico-chemical properties. The mechanical behaviour in wet state, strongly related to crystallinity and water holding capacity, resulted to be very different depending on the preparation route although the Ch content was very similar: 35 and 37 wt% for the in situ and ex situ membranes, respectively...
August 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29772990/the-effects-of-meniscal-geometry-on-susceptibility-for-meniscal-and-acl-injury-in-non-arthritic-knees-a-retrospective-case-control-study
#16
Alexander Tejani, Qais Naziri, Preston W Grieco, Robert Pivec, Damon Greene, Bhaveen V Kapadia, Dipal Chatterjee, William P Urban
Prior studies have not found significant differences in meniscal parameters between patients with meniscal and ligamentous injury and those without. The purpose of this study was to determine whether such relationships exist. Clinical records and magnetic resonance images of three subject groups were reviewed. Group 1 solely had meniscal tears (medial/lateral), Group 2 had meniscal tears with concurrent ACL tears, and Group 3 had healthy knees. The mean age of subjects included was 35.9 years (range 8.2-72...
2018: Journal of Long-term Effects of Medical Implants
https://www.readbyqxmd.com/read/29772655/antioxidant-activity-and-hepatoprotective-potential-of-quercetin-7-rhamnoside-in-vitro-and-in-vivo
#17
Zhi-Qiang Huang, Pan Chen, Wei-Wei Su, Yong-Gang Wang, Hao Wu, Wei Peng, Pei-Bo Li
Hypericum japonicum is traditionally used as a folk medicine to treat cholestasis and hepatitis. Quercetin 7-rhamnoside (Q7R) is one of the main flavonoid components of Hypericum japonicum and has been rarely studied. The aim of the present study was to evaluate the antioxidant activity and hepatoprotective potential of Q7R. In the in vitro experiments, DPPH, ABTS and ferric reducing antioxidant power (FRAP) assays were first performed to assess the antioxidant properties of Q7R, and then a H₂O₂-induced oxidative damage cellular model was used to determine the cytoprotective and antioxidant properties of Q7R in human liver L-02 cells...
May 16, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29771959/molecular-evidence-of-hybridization-in-sympatric-populations-of-the-enantia-jethys-complex-lepidoptera-pieridae
#18
Jovana M Jasso-Martínez, Salima Machkour-M'Rabet, Roger Vila, Rosario Rodríguez-Arnaiz, América Nitxin Castañeda-Sortibrán
Hybridization events are frequently demonstrated in natural butterfly populations. One interesting butterfly complex species is the Enantia jethys complex that has been studied for over a century; many debates exist regarding the species composition of this complex. Currently, three species that live sympatrically in the Gulf slope of Mexico (Enantia jethys, E. mazai, and E. albania) are recognized in this complex (based on morphological and molecular studies). Where these species live in sympatry, some cases of interspecific mating have been observed, suggesting hybridization events...
2018: PloS One
https://www.readbyqxmd.com/read/29771889/-bioinorganic-chemical-composition-of-the-lens-and-methods-of-its-investigation
#19
S E Avetisov, I A Novikov, N A Pakhomova, V G Motalov
Bioinorganic chemical composition of the lens of human and experimental animals (cows, dogs, rats, rabbits) have been analyzed in various studies. In most cases, the studies employed different methods to determine the gross (total) composition of chemical elements and their concentrations in the examined samples. Less frequently, they included an assessment of the distribution of chemical elements in the lens and correlation of their concentration with its morphological changes. Chemical elements from all groups (series) of the periodic classification system were discovered in the lens substance...
2018: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/29771880/-anti-vegf-therapy-for-diabetic-macular-edema-from-theory-to-clinical-practice
#20
A Zh Fursova, N V Chubar, M S Tarasov, I F Niculich, M A Vasilyeva, O G Gusarevich
PURPOSE: To evaluate clinical effectiveness of aflibercept therapy for patients with diabetic macular edema (DME) - both naïve to the drug and unresponsive to previous anti-VEGF treatment. MATERIAL AND METHODS: The study included 127 patients (127 eyes) divided into two groups. The first group consisted of 100 primary DME patients (100 eyes) with mean age of 68.48±2.56 years and average disease duration of 12.50±7.85 years. The second group comprised 27 patients (27 eyes) with resistant macular edema who had received three or more 0...
2018: Vestnik Oftalmologii
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