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https://www.readbyqxmd.com/read/28727605/in-vitro-compatibility-of-contact-lenses-with-corneal-epithelial-cells
#1
Ajay K Vijay, Zohra Fadli, Carol Lakkis, Chantal Coles-Brennan, Mark D P Willcox
PURPOSE: To determine the interaction of contact lenses of different materials with corneal epithelial cells grown in tissue culture. METHODS: Two different corneal epithelial cell lines were grown to confluence in culture media. Two hydrogel contact lenses with and without polyvinylpyrrolidone (PVP) {1-DAY ACUVUE MOIST (1-Day ACUVUE [hydrogel lenses]) and a silicone hydrogel contact lens, AIR OPTIX NIGHT & DAY} were removed from their blister packs, washed in phosphate-buffered saline, and applied to the cells...
July 18, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28726849/o2-controllable-hydrogels-for-studying-cellular-responses-to-hypoxic-gradients-in-three-dimensions-in-vitro-and-in-vivo
#2
Daniel M Lewis, Michael R Blatchley, Kyung Min Park, Sharon Gerecht
Oxygen (O2) acts as a potent upstream regulator of cell function. In both physiological and pathophysiological microenvironments, the O2 concentration is not uniformly distributed but instead follows a gradient that depends on distance from oxygen-carrying blood vessels. Such gradients have a particularly important role in development, tissue regeneration, and tumor growth. In this protocol, we describe how to use our previously reported gelatin-based O2-controllable hydrogels that can provide hypoxic microenvironments in vitro...
August 2017: Nature Protocols
https://www.readbyqxmd.com/read/28725632/medicinal-importance-pharmacological-activities-and-analytical-aspects-of-hispidulin-a-concise-report
#3
REVIEW
Kanika Patel, Dinesh Kumar Patel
Herbal medicines have been played an important role in the human civilization since very ancient time as a food, cloth, medicine and other aspects. Some of the important drugs in the modern medicine were derived from the natural sources such as aspirin, digitalis, quinine, vincristine, vinblastine etc. Hispidulin (4', 5, 7-trihydroxy-6-methoxyflavone) is a flavones derivative found in plant such as Grindelia argentina, Arrabidaea chica, Saussurea involucrate, Crossostephium chinense, Artemisia and Salvia species...
July 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28722264/ultrastructure-changes-in-buffalo-bubalus-bubalis-oocytes-before-and-after-maturation-in%C3%A2-vitro-with-sericin
#4
Sri Gustina, Hasbi Hasbi, Ni Wayan Kurniani Karja, Mohamad Agus Setiadi, Iman Supriatna
The aim of this research was to identify the changes in the cytoplasmic ultrastructure of immature and matured oocytes in buffalo (Bubalus bubalis). Oocytes were matured in vitro in tissue culture medium-199 with and without sericin, and then analyzed by light and transmission electron microscopy. The experiment result showed that the nuclear maturation rate of buffalo oocytes was significantly higher in the presence of sericin (80.6%) than without sericin (68.1%) (P < 0.05). The immature oocytes were characterized by cortical granule clusters in the ooplasm and the absence of perivitelline space (PVS)...
July 19, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28721202/defining-the-inflammatory-signature-of-human-lung-explant-tissue-in-the-presence-and-absence-of-glucocorticoid
#5
Tracy L Rimington, Emily Hodge, Charlotte K Billington, Sangita Bhaker, Binaya K C, Iain Kilty, Scott Jelinsky, Ian P Hall, Ian Sayers
BACKGROUND:  Airway inflammation is a feature of many respiratory diseases and there is a need for newer, more effective anti-inflammatory compounds. The aim of this study was to develop an ex vivo human lung explant model which can be used to help study the mechanisms underlying inflammatory responses and which can provide a tool to aid drug discovery for inflammatory respiratory diseases such as asthma and COPD. METHOD:  Parenchymal lung tissue from 6 individual donors was dissected and cultured with two pro-inflammatory stimuli, lipopolysaccharide (LPS) (1 µg/ml) and interleukin-1 beta (IL-1β) (10 ng/ml) in the presence or absence of dexamethasone (1 µM)...
2017: F1000Research
https://www.readbyqxmd.com/read/28718947/relevance-of-bioreactors-and-whole-tissue-cultures-for-the-translation-of-new-therapies-to-humans
#6
Marianna Peroglio, Diana Gaspar, Dimitrios I Zeugolis, Mauro Alini
The purpose of this review is to provide a brief overview of bioreactor-based culture systems as alternatives to conventional two- and three- dimensional counterparts. The role, challenges and future aspirations of bioreactors in the musculoskeletal field (e.g. cartilage, intervertebral disc, tendon and bone) are discussed. Bioreactors, by recapitulating physiological processes, can be used effectively as part of the initial in vitro screening, reducing that way the number of animal required for preclinical assessment, complying with the 3R principles and, in most cases, allowing working with human tissues...
July 18, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28716571/antiviral-effect-of-forsythoside-a-from-forsythia-suspensa-thunb-vahl-fruit-against-influenza-a-virus-through-reduction-of-viral-m1-protein
#7
Anna Hing-Yee Law, Cindy Lai-Hung Yang, Allan Sik-Yin Lau, Godfrey Chi-Fung Chan
ETHNOPHARMACOLOGICAL RELEVANCE: Yinqiaosan is a classical traditional Chinese medicine formula, which has been used to treat respiratory diseases since ancient China. It consists of nine herbs and among them, Forsythia suspensa (Thunb.) Vahl fruit is one of the major herbal components. Despite the long history of Yinqiaosan, the active compounds and the mechanisms of action of this formula remain elusive. AIM OF THE STUDY: The present study aimed to examine the suppressive effect of Yinqiaosan on influenza virus and to identify the active components in the formula targeting influenza...
July 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28714050/superiority-of-the-sonication-method-against-conventional-periprosthetic-tissue-cultures-for-diagnosis-of-prosthetic-joint-infections
#8
Sofia Tani, Panagiotis Lepetsos, Antonios Stylianakis, John Vlamis, Konstantinos Birbas, Ioannis Kaklamanos
INTRODUCTION: Diagnosis of periprosthetic infections is challenging. The aim of this study was to compare the diagnostic accuracy of conventional periprosthetic tissue culture and culture of sonication fluid of the explanted prostheses. METHODS: We prospectively enrolled 114 patients undergoing revision hip or knee arthroplasty because of loosening of the prostheses, at our institution, between July 2012 and July 2016. Patients' medical history and demographic characteristics were recorded...
July 17, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28712499/use-of-crispr-cas9-for-crop-improvement-in-maize-and-soybean
#9
Doane Chilcoat, Zhan-Bin Liu, Jeffry Sander
CRISPR/Cas enables precise improvement of commercially relevant crop species by transgenic and nontransgenic methodologies. We have used CRISPR/Cas with or without DNA repair template in both corn and soybean for a range of applications including enhancing drought tolerance, improving seed oil composition, and endowing herbicide tolerance. Importantly, by pairing CRISPR/Cas technology with recent advances in plant tissue culture, these changes can be introduced directly into commercially relevant genotypes...
2017: Progress in Molecular Biology and Translational Science
https://www.readbyqxmd.com/read/28709754/nondestructive-mechanical-characterization-of-developing-biological-tissues-using-inflation-testing
#10
P J A Oomen, M A J van Kelle, C W J Oomens, C V C Bouten, S Loerakker
One of the hallmarks of biological soft tissues is their capacity to grow and remodel in response to changes in their environment. Although it is well-accepted that these processes occur at least partly to maintain a mechanical homeostasis, it remains unclear which mechanical constituent(s) determine(s) mechanical homeostasis. In the current study a nondestructive mechanical test and a two-step inverse analysis method were developed and validated to nondestructively estimate the mechanical properties of biological tissue during tissue culture...
July 5, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28709460/semi-quantitative-influenza-a-population-averages-from-a-multiplex-respiratory-viral-panel-rvp-potential-for-reflecting-target-sequence-changes-affecting-the-assay
#11
Kenneth H Rand, Maura Pieretti, Rodney Arcenas, Stacy G Beal, Herbert Houck, Emma Boslet, John A Lednicky
BACKGROUND: Yearly influenza virus mutations potentially affect the performance of molecular assays, if nucleic acid changes involve the sequences in the assay. Because individual patient viral loads depend on variables such as duration of illness, specimen type, age, and immunosuppression, we examined seasonal population averages of positive tests to smooth inherent variability. METHODS: We studied the population seasonal averages of the semi-quantitative nAMPs for the influenza matrix and hemagglutinin genes in the GenMark (Carlsbad, CA) Respiratory Viral Panel assay between 3 institutions over 3 Influenza seasons...
July 14, 2017: Virology Journal
https://www.readbyqxmd.com/read/28708926/comparison-of-two-porcine-collagen-membranes-combined-with-rhbmp-2-and-rhbmp-9-on-osteoblast-behavior-in-vitro
#12
Masako Fujioka-Kobayashi, Benoit Schaler, Yoshinori Shirakata, Toshiaki Nakamura, Kazuyuki Noguchi, Yufeng Zhang, Richard J Miron
PURPOSE: To investigate the bone-inducing properties of two types of collagen membranes in combination with recombinant human bone morphogenetic protein (rhBMP)-2 and rhBMP-9 on osteoblast behavior. MATERIALS AND METHODS: Porcine pericardium collagen membranes (PPCM) and porcine dermis-derived collagen membranes (PDCM) were coated with either rhBMP-2 or rhBMP-9. The adsorption and release abilities were first investigated via enzyme-linked immunosorbent assay up to 10 days...
July 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28707625/bioprinting-of-functional-vascularized-mouse-thyroid-gland-construct
#13
Elena A Bulanova, Elizaveta V Koudan, Jonathan Degosserie, Charlotte Heymans, Frederico DAS Pereira, Vladislav A Parfenov, Yi Sun, Qi Wang, Suraya A Akhmedova, Irina K Sviridova, Natalia S Sergeeva, Georgy A Frank, Yusef D Khesuani, Christophe E Pierreux, Vladimir A Mironov
Bioprinting can be defined as additive biofabrication of 3D tissues and organ constructs using tissue spheroids, capable of self-assembly, as building blocks. Thyroid gland, a relatively simple endocrine organ, is suitable for testing the proposed bioprinting technology. Here we report the bioprinting of functional vascularized mouse thyroid gland construct from embryonic tissue spheroids as a proof of concept. Based on the self-assembly principle, we generated thyroid tissue starting from thyroid spheroids (TS) and allantoic spheroids (AS), as a source of thyrocytes and endothelial cells (EC), respectively...
July 14, 2017: Biofabrication
https://www.readbyqxmd.com/read/28707226/the-role-of-macrophage-polarization-on-fibroblast-behavior-an-in-vitro-investigation-on-titanium-surfaces
#14
Xuzhu Wang, Yulan Wang, Dieter D Bosshardt, Richard J Miron, Yufeng Zhang
OBJECTIVES: This study investigated the effect of smooth and rough titanium surface topographies on macrophage polarization and their influence on gingival fibroblast behavior cultured on titanium surfaces. MATERIALS AND METHODS: RAW 264.7 macrophages were seeded on smooth (pickled titanium (PT)) and rough Sand-blasted with Large grit particles followed by Acid-etching (SLA) titanium surfaces and first investigated for macrophage polarization towards tissue-inflammatory M1 macrophages or wound-healing M2 macrophages...
July 14, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28701418/laboratory-workflow-analysis-of-culture-of-periprosthetic-tissues-in-blood-culture-bottles
#15
Trisha N Peel, John A Sedarski, Brenda L Dylla, Samantha K Shannon, Fazlollaah Amirahmadi, John G Hughes, Allen C Cheng, Robin Patel
Culture of periprosthetic tissue specimens in blood culture bottles is more sensitive than conventional techniques, but the impact on laboratory workflow has yet to be addressed. Herein, we examined the impact of culture of periprosthetic tissues in blood culture bottles on laboratory workflow and cost.Workflow was process mapped and Decision Tree Models were constructed using probabilities of positive and negative cultures drawn from our published study (Peel TN, et al 2016. mBio 7:e01776-01715) and the processing times and resource costs from the laboratory staff time viewpoint to compare periprosthetic tissues culture processes using conventional techniques with culture in blood culture bottles...
July 12, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28699116/high-taxonomic-diversity-of-cultivation-recalcitrant-endophytic-bacteria-in-grapevine-field-shoots-their-in-vitro-introduction-and-unsuspected-persistence
#16
Pious Thomas, Aparna C Sekhar, Sadiq Pasha Shaik
Molecular and microscopic analyses reveal enormous non-cultivable endophytic bacteria in grapevine field shoots with functional significance. Diverse bacteria enter tissue cultures through surface-sterilized tissues and survive surreptitiously with varying taxonomic realignments. The study was envisaged to assess the extent of endophytic bacterial association with field shoot tissues of grapevine and the likelihood of introduction of such internally colonizing bacteria in vitro adopting molecular techniques targeting the non-cultivable bacterial community...
July 11, 2017: Planta
https://www.readbyqxmd.com/read/28698035/concordance-of-results-of-blood-and-tissue-cultures-from-patients-with-pyogenic-spondylitis-a-retrospective-cohort-study
#17
Ji Yun Bae, Chung-Jong Kim, Uh-Jin Kim, Kyoung-Ho Song, Eu Suk Kim, Seung Ji Kang, Myoung-Don Oh, Kyung-Hwa Park, Nam Joong Kim
OBJECTIVES: The aim of this study is to investigate the concordance of results of blood and tissue cultures in patients with pyogenic spondylitis. METHODS: We searched the patients with pyogenic spondylitis in whom micro-organisms were isolated from both blood and tissue cultures by retrospective review of medical records in 3 tertiary university-affiliated hospitals between January 2005 and December 2015. The species and antimicrobial susceptibility patterns of isolates from blood and tissue cultures were compared to each other...
July 8, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28697477/green-synthesis-of-gold-nanoparticles-using-a-cheap-sphaeranthus-indicus-extract-impact-on-plant-cells-and-the-aquatic-crustacean-artemia-nauplii
#18
Chinnasamy Balalakshmi, Kasi Gopinath, Marimuthu Govindarajan, Ravi Lokesh, Ayyakannu Arumugam, Naiyf S Alharbi, Shine Kadaikunnan, Jamal M Khaled, Giovanni Benelli
The impact of green-fabricated gold nanoparticles on plant cells and non-target aquatic species is scarcely studied. In this research, we reported an environment friendly technique for the synthesis of gold nanoparticles (Au NPs) using the Sphaeranthus indicus leaf extract. The formation of the metal NPs was characterized by UV-Visible and FT-IR spectroscopy, XRD, SEM and TEM analyses. The UV-Visible spectra of Au NPs showed a surface plasmon resonance peak at 531nm. FT-IR analysis indicated functional bio-molecules associated with Au NPs formation...
June 29, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28696558/mammalian-cell-tissue-culture
#19
Katy Phelan, Kristin M May
Cultured mammalian cells are used extensively in the field of human genetics. It requires a number of special skills in order to be able to preserve the structure, function, behavior, and biology of the cells in culture. This unit describes the basic skills required to maintain and preserve cell cultures: maintaining aseptic technique, preparing media with the appropriate characteristics, passaging, freezing and storage, recovering frozen stocks, and counting viable cells. © 2017 by John Wiley & Sons, Inc.
July 11, 2017: Current Protocols in Human Genetics
https://www.readbyqxmd.com/read/28695519/in-vitro-long-term-proliferation-assays-to-study-antiproliferative-effects-of-parp-inhibitors-on-cancer-cells
#20
Heike Keilhack, Paul Chang
Cell proliferation assays are an important component of small molecule inhibitor screens for cancer therapies. An important but often overlooked variable involves the timing and timeframe of inhibitor treatment. Whereas many traditional chemotherapeutics kill or inhibit proliferation on the timeframe of hours or in a few days of treatment, more targeted therapies that affect other cancer-relevant pathways, including differentiation or cell stress responses, can take longer, often several days to weeks to impact cellular growth and survival...
2017: Methods in Molecular Biology
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