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https://www.readbyqxmd.com/read/29386028/pulmonary-exposure-to-carbonaceous-nanomaterials-and-sperm-quality
#1
Astrid Skovmand, Anna Jacobsen Lauvås, Preben Christensen, Ulla Vogel, Karin Sørig Hougaard, Sandra Goericke-Pesch
BACKGROUND: Semen quality parameters are potentially affected by nanomaterials in several ways: Inhaled nanosized particles are potent inducers of pulmonary inflammation, leading to the release of inflammatory mediators. Small amounts of particles may translocate from the lungs into the lung capillaries, enter the systemic circulation and ultimately reach the testes. Both the inflammatory response and the particles may induce oxidative stress which can directly affect spermatogenesis...
January 31, 2018: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/29330059/biosynthesis-characterization-and-antimicrobial-activities-of-zinc-oxide-nanoparticles-from-leaf-extract-of-glycosmis-pentaphylla-retz-dc
#2
S Vijayakumar, P Krishnakumar, P Arulmozhi, S Mahadevan, N Parameaswari
Biosynthesized nanoparticles have an incredible application in biomedicine owing to its simplicity, eco-friendly properties and low cost. The present study aims to determine the green synthesized zinc oxide nanoparticles from methanolic leaf extract of Glycosmis pentaphylla. The synthesized nanoparticles were characterized using UV-VIS Spectroscopy, Flourescence spectrometer, FT-IR, XRD, SEM with EDAX and TEM. The confirmations of synthesized nanoparticles were characterized by peak at 351 and 410 nm in the UV-VIS spectrum and photoluminescence spectrum respectively...
January 9, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29327016/isoenergic-modification-of-whey-protein-structure-by-denaturation-and-crosslinking-using-transglutaminase
#3
Emil G P Stender, Glykeria Koutina, Kristoffer Almdal, Tue Hassenkam, Alan Mackie, Richard Ipsen, Birte Svensson
Transglutaminase (TG) catalyzes formation of covalent bonds between lysine and glutamine side chains and has applications in manipulation of food structure. Physical properties of a whey protein mixture (SPC) denatured either at elevated pH or by heat-treatment and followed by TG catalyzed crosslinking, have been characterised using dynamic light scattering, size exclusion chromatography, flourescence spectroscopy and atomic force microscopy. The degree of enzymatic crosslinking appeared higher for pH- than for heat-denatured SPC...
January 12, 2018: Food & Function
https://www.readbyqxmd.com/read/29261761/early-detection-of-mycobacterium-avium-subsp-paratuberculosis-infection-in-cattle-with-multiplex-bead-based-immunoassays
#4
Lingling Li, Bettina Wagner, Heather Freer, Megan Schilling, John P Bannantine, Joseph J Campo, Robab Katani, Yrjo T Grohn, Jessica Radzio-Basu, Vivek Kapur
Johne's Disease (JD), caused by Mycobacterium avium subspecies paratuberculosis (MAP), results in significant economic loss to livestock production. The early detection of MAP infection in animals with extant serological assays has remained challenging due to the low sensitivity of commercially available ELISA tests, a fact that has hampered the development of effective JD control programs. Our recent protein microarray-based studies identified several promising candidate antigens that are immunogenic during different stages of MAP infection...
2017: PloS One
https://www.readbyqxmd.com/read/29251705/human-adipose-derived-stem-cell-asc-treatment-modulates-cellular-protection-in-both-in-vitro-and-in-vivo-traumatic-brain-injury-models
#5
Nikolas S Kappy, Shaohua Chang, William M Harris, Michael Plastini, Telisha Ortiz, Ping Zhang, Joshua P Hazelton, Jeffrey P Carpenter, Spencer A Brown
BACKGROUND: Traumatic brain injury (TBI) is a common cause of morbidity and mortality in the civilian population. The purpose of this study is to examine the effect(s) of ASC treatment on cellular and functional recovery in TBI via both in vitro and in vivo methods. METHODS: Cultured neuroblastoma cells, SH-SY5Y, were scratched to mimic TBI in an in vitro model. The effect of ASC conditioned medium on cell death, mitochondrial function, and expression of inflammatory cytokines (TNF-α, IL-1β and IL-6) as well as apoptosis marker FAS was measured...
December 14, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29113465/porcine-neural-progenitor-cells-derived-from-tissue-at-different-gestational-ages-can-be-distinguished-by-global-transcriptome
#6
Jing Yang, Steven Menges, Ping Gu, Ronald Tongbai, Melissa Samuel, Randall S Prather, Henry Klassen
The impact of gestational age on mammalian neural progenitor cells is potentially important for both an understanding of neural development and the selection of donor cells for novel cell-based treatment strategies. In terms of the latter, it can be problematic to rely entirely on rodent models in which the gestational period is significantly shorter and the brain much smaller than is the case in humans. Here, we analyzed pig brain progenitor cells (pBPCs) harvested at 2 different gestational ages (E45 and E60) using gene expression profiles, obtained by microarray analysis and quantitative polymerase chain reaction (qPCR), across time in culture...
September 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28983465/myc-immunohistochemistry-predicts-myc-rearrangements-by-fish
#7
Julum Nwanze, Momin T Siddiqui, Keith A Stevens, Debra Saxe, Cynthia Cohen
MYC is the proto-oncogene classically associated with Burkitt lymphoma (BL) located at chromosomal locus 8q24. Rearrangements of MYC are seen in nearly 100% of BL but have been reported in 3-16% of diffuse large B-cell lymphomas (DLBCLs). Rearrangements of MYC are tested for by flourescence in situ hybridization (FISH). In this study, we compared immunohistochemistry (IHC) using a monoclonal antibody directed against the human Myc protein to the current method, FISH. 31 cases were identified that had been tested for MYC rearrangements by FISH over 27 months with heterogeneity in the diagnoses: 5 BL; 10 DLBCL; 3 B-cell lymphoma unclassifiable between DLBCL and BL; 5 B-cell lymphoma not otherwise specified; 1 EBV-related B-cell lymphoma; 1 composite CLL/SLL-large cell lymphoma; and 6 designated as high-grade or aggressive B-cell lymphoma...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28525954/construction-of-various-%C3%AE-34-5-deleted-fluorescent-expressing-oncolytic-herpes-simplex-type-1-ohsv-for-generation-and-isolation-of-hsv-based-vectors
#8
Shahriyar Abdoli, Farzin Roohvand, Ladan Teimoori-Toolabi, Mohammad Ali Shokrgozar, Mina Bahrololoumi, Kayhan Azadmanesh
Background: Oncolytic herpes simplex virus (oHSV)-based vectors lacking γ34.5 gene, are considered as ideal templates to construct efficient vectors for (targeted) cancer gene therapy. Herein, we reported the construction of three single/dually-flourescence labeled and γ34.5-deleted, recombinant HSV-1 vectors for rapid generation and easy selection/isolation of different HSV-Based vectors. Methods: Generation of recombinant viruses was performed with conventional homologous recombination methods using green fluorescent protein (GFP) and BleCherry harboring shuttle vectors...
July 2017: Iranian Biomedical Journal
https://www.readbyqxmd.com/read/28443520/recent-advances-on-3-hydroxyflavone-derivatives-structures-and-properties
#9
Burcu Butun, Gulacti Topcu, Turan Ozturk
Flavonoids are naturally occurring phenolic compounds named as 2-phenyl-1-benzopyran-4-one and classified into several subclasses according to their basic chemical structures such as flavones, flavonols, flavanones, flavanonols, and flavanols. Among them, flavonols (3-hydroxyflavone), containing a 3-hydroxyl group in association with its 4-keto group and double bond between 2- and 3- carbon atoms, have the best electron conjugated skeleton in flavonoid family, providing several resonance structures and chelating ability, through which various pharmacological activities such as antiviral, antitumor, anti-inflammatory, anticholinesterase, cytotoxicity, and particularly high antioxidant activity are demonstrated...
April 24, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/28372570/malaria-over-diagnosis-in-cameroon-diagnostic-accuracy-of-fluorescence-and-staining-technologies-fast-malaria-stain-and-led-microscopy-versus-giemsa-and-bright-field-microscopy-validated-by-polymerase-chain-reaction
#10
Sean M Parsel, Steven A Gustafson, Edward Friedlander, Alexander A Shnyra, Aderosoye J Adegbulu, Ying Liu, Nicole M Parrish, Syed A Jamal, Eve Lofthus, Leo Ayuk, Charles Awasom, Carolyn J Henry, Carole P McArthur
BACKGROUND: Malaria is a major world health issue and its continued burden is due, in part, to difficulties in the diagnosis of the illness. The World Health Organization recommends confirmatory testing using microscopy-based techniques or rapid diagnostic tests (RDT) for all cases of suspected malaria. In regions where Plasmodium species are indigenous, there are multiple etiologies of fever leading to misdiagnoses, especially in populations where HIV is prevalent and children. To determine the frequency of malaria infection in febrile patients over an 8-month period at the Regional Hospital in Bamenda, Cameroon, we evaluated the clinical efficacy of the Flourescence and Staining Technology (FAST) Malaria stain and ParaLens Advance(TM) microscopy system (FM) and compared it with conventional bright field microscopy and Giemsa stain (GS)...
April 4, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28272880/nitration-of-tyrosine-residue-y10-of-a%C3%AE-1-42-significantly-inhibits-its-aggregation-and-cytotoxicity
#11
Jie Zhao, Jinming Wu, Zhen Yang, Hailing Li, Zhonghong Gao
Amyloid-β plaques and oxidative stress are the major hallmarks of Alzheimer's disease. Our previous study found that the heme-Aβ complex enhanced the catalytic effect of free heme on protein tyrosine nitration in the presence of hydrogen peroxide (H2O2) and nitrite (NO2(-)). Y10 in Aβ could be the first target to be nitrated. We also found that nitration of Aβ1-40 significantly decreased its aggregation. However, a contrary report showed that nitration of Aβ1-42 by peroxynitrite enhanced its aggregation...
April 17, 2017: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/28147239/a-sensitive-alk-immunohistochemistry-companion-diagnostic-test-identifies-patients-eligible-for-treatment-with-crizotinib
#12
Trish Thorne-Nuzzo, Crystal Williams, Alice Catallini, June Clements, Shalini Singh, James Amberson, Kim Dickinson, Zoran Gatalica, Steffan N Ho, Isabell Loftin, Abigail McElhinny, Penny Towne
INTRODUCTION: The availability of high-quality, rigorously validated diagnostic tests that can be broadly implemented is necessary to efficiently identify patients with anaplastic lymphoma kinase (ALK)-positive NSCLC who can potentially benefit from treatment with crizotinib. Here we present data on the recently approved Ventana ALK (D5F3) CDx Assay (Ventana Medical Systems, Tucson, AZ), the only immunohistochemistry (IHC)-based assay linked to treatment outcome. METHODS: NSCLC specimens prospectively tested for anaplastic lymphoma receptor tyrosine kinase gene (ALK) status by flourescent in situ hybridization (FISH) in the PROFILE 1014 clinical trial of crizotinib versus chemotherapy (N = 1018, including 179 ALK-positive and 754 ALK-negative specimens) were evaluated using the ALK (D5F3) CDx assay...
May 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28124963/-evaluation-of-pna-fish-method-for-direct-identification-of-candida-species-in-blood-culture-samples-and-its-potential-impact-on-guidance-of-antifungal-therapy
#13
Özlem Doğan, Ahmet Çağkan İnkaya, Dolunay Gülmez, Ömrüm Uzun, Murat Akova, Sevtap Arıkan Akdağlı
Early antifungal therapy has a major influence on survival in candidemia. Rapid identification of the species has importance for the treatment, prediction of the species-specific primary resistance and variable antifungal susceptibility. Recently, molecular-based methods attempt to reduce the time between the positive signal of a blood culture and identification of the fungus. PNA-FISH (Peptide nucleic acid fluorescence in situ hybridization) assay distinguishes a number of frequently isolated Candida species in groups following the growth in blood culture...
October 2016: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28113123/disruption-of-gel-phase-lipid-packing-efficiency-by-sucralose-studied-with-merocyanine-540
#14
Morgan Barker, Anthony Kennedy
Sucralose, an artificial sweetener, displays very different behavior towards membranes than its synthetic precursor sucrose. The impact of both sugars on model dipalmitoylphosphatidylcholine model membranes was investigated using absorbance and flourescence spectroscopy and the membrane probe merocyanine 540. This probe molecule is highly sensitive to changes in membrane packing, microviscosity and polarity. This work focuses on the impact of sugars on the outer leaflet of unilamellar dipalmitoyl phosphatidylcholine model membranes...
April 1, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/27806708/ryanodine-induced-vasoconstriction-of-the-gerbil-spiral-modiolar-artery-depends-on-the-ca-2-sensitivity-but-not-on-ca-2-sparks-or-bk-channels
#15
Gayathri Krishnamoorthy, Katrin Reimann, Philine Wangemann
BACKGROUND: In many vascular smooth muscle cells (SMCs), ryanodine receptor-mediated Ca 2+ sparks activate large-conductance Ca 2+ -activated K + (BK) channels leading to lowered SMC [Ca 2+ ] i and vasodilation. Here we investigated whether Ca 2+ sparks regulate SMC global [Ca 2+ ] i and diameter in the spiral modiolar artery (SMA) by activating BK channels. METHODS: SMAs were isolated from adult female gerbils, loaded with the Ca 2+ -sensitive flourescent dye fluo-4 and pressurized using a concentric double-pipette system...
November 2, 2016: BMC Physiology
https://www.readbyqxmd.com/read/27513829/8-anilino-1-naphthalenesulfonate-layered-double-hydroxide-ultrathin-films-small-anion-assembly-and-its-potential-application-as-a-fluorescent-biosensor
#16
Ping Zhang, Ling Li, Yun Zhao, Zeyun Tian, Yumei Qin, Jun Lu
The fluorescent dye 8-anilino-1-naphthalenesulfonate (ANS) is a widely used fluorescent probe molecule for biochemistry analysis. This paper reported the fabrication of ANS/layered double hydroxide nanosheets (ANS/LDH)n ultrathin films (UTFs) via the layer-by-layer small anion assembly technique based on electrostatic interaction and two possible weak interactions: hydrogen-bond and induced electrostatic interactions between ANS and positive-charged LDH nanosheets. The obtained UTFs show a long-range-ordered periodic layered stacking structure and weak fluorescence in dry air or water, but it split into three narrow strong peaks in a weak polarity environment induced by the two-dimensional (2D) confinement effect of the LDH laminate; the fluorescence intensity increases with decreasing the solvent polarity, concomitant with the blue shift of the emission peaks, which show good sensoring reversibility...
September 6, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/27314649/moringa-oleifera-s-nutritious-aqueous-leaf-extract-has-anticancerous-effects-by-compromising-mitochondrial-viability-in-an-ros-dependent-manner
#17
Niveen Madi, Mohammed Dany, Salah Abdoun, Julnar Usta
INTRODUCTION: Moringa oleifera (MO) is an important dietary component for many populations in West Africa and the Indian subcontinent. In addition to its highly nutritious value, almost all parts of this plant have been widely used in folk medicine in curing infectious, cardiovascular, gastrointestinal, hepatic, and other diseases. Evidence-based research supported its versatile medicinal properties; however, more rigorous research is required to establish it in cancer therapy. As such, in this study we aim to investigate the in vitro anticancerous effect of Moringa oleifera's aqueous leaf extract...
September 2016: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/27221644/a-label-free-fluorescent-adenosine-triphosphate-biosensor-via-overhanging-aptamer-triggered-enzyme-protection-and-target-recycling-amplification
#18
Zhaoyin Wang, Jian Zhao, Zhihui Dai
Herein, a label-free fluorescent adenosine triphosphate (ATP) aptasensor is fabricated with a DNA hairpin and an overhanging aptamer. In the presence of ATP, the overhanging sequences of the aptamer may form preferred substrates of exo III, and thus trigger the enzyme-assisted amplification, which results in the release of G-rich sequences. Free G-rich sequences subsequently generate an enhanced flourescent signal by binding with thioflavin T. However, if ATP is absent, the overhanging sequence can induce steric hindrance and protect the DNA hairpin against the digestion of exo III, significantly reducing the noise of this biosensor...
June 20, 2016: Analyst
https://www.readbyqxmd.com/read/26891480/small-interfering-rna-delivery-through-positively-charged-polymer-nanoparticles
#19
Luca Dragoni, Raffaele Ferrari, Monica Lupi, Alberto Cesana, Francesca Falcetta, Paolo Ubezio, Maurizio D'Incalci, Massimo Morbidelli, Davide Moscatelli
Small interfering RNA (siRNA) is receiving increasing attention with regard to the treatment of many genetic diseases, both acquired and hereditary, such as cancer and diabetes. Being a high molecular weight (MW) polyanion, siRNA is not able to cross a cell membrane, and in addition it is unstable in physiological conditions. Accordingly, a biocompatible nanocarrier able to deliver siRNA into cells is needed. In this work, we synthesized biocompatible positively charged nanoparticles (NPs) following a two-step process that involves ring opening polymerization (ROP) and emulsion free radical polymerization (EFRP)...
March 29, 2016: Nanotechnology
https://www.readbyqxmd.com/read/26642654/methotrexate-and-myotrexate-induce-apoptosis-in-human-myoma-fibroblasts-t-hes-cell-line-via-mitochondrial-pathway
#20
Tatjana Kastratović, Slobodan Arsenijević, Zoran Matović, Marina Mitrović, Ivana Nikolić, Zoran Milosavljević, Zoran Protrka, Marija Šorak, Janko Đurić
Uterine leiomyomas (fibroids) are the most common benign tumors in women of reproductive age. Although the local application of low doses of methotrexate (MTX) is used as an effective treatment of the myomas, myotrexate could be a promising new drug. This study investigated the cytotoxic and apoptotic effects of both MTX and myotrexate in human fibroblasts derived from the uterine fibroids (T hES cell line). The myotrexate adduct is an aqueous solution of MTX and L-arginine. Cells were treated with a graded concentrations of both MTX and myothrexate (0...
May 2015: Acta Poloniae Pharmaceutica
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