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https://www.readbyqxmd.com/read/29677682/potential-benefits-and-phytotoxicity-of-bulk-and-nano-chitosan-on-the-growth-morphogenesis-physiology-and-micropropagation-of-capsicum-annuum
#1
Ghasem Asgari-Targhi, Alireza Iranbakhsh, Zahra Oraghi Ardebili
Concerning environmental issues of metal based-nanomaterials and increasing demand for nano-based products; various strategies have been employed to find eco-friendly natural nano-compounds, among which nano-polymer chitosan is mostly considered. Herein, the various aspects of the way in which bulk or nano-chitosan may modify growth, morphogenesis, micropropagation, and physiology of Capsicum annuum L. were considered. Culture medium was manipulated with different concentrations of bulk chitosan or synthesized chitosan/tripolyphosphate (TPP) nano-particle...
April 12, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29677639/selection-of-reference-genes-for-quantitative-real-time-pcr-in-octopus-minor-cephalopoda-octopoda-under-acute-ammonia-stress
#2
Ran Xu, Xiaodong Zheng
High concentration of ammonia is a common issue in the aquaculture industry and often causes detrimental effects to aquatic products. Exploring expression regulation of genes involved in acute ammonia stress can help to understand the molecular mechanisms of ammonia response. Quantitative real-time PCR (qRT-PCR) with proper reference genes is an effective way to normalize the expression of target genes. To identify the most suitable reference genes for Octopus minor (Mollusca: Cephalopoda: Octopoda) under acute ammonia stress and the normal culturing, nine candidate genes were selected for the validation: OD, RPS18b, RPL29, RPS5, EF-1α, RPL6, AA4, ACT, TUB...
April 14, 2018: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29677632/heat-shock-induced-cathepsin-b-activity-during-ivf-and-culture-compromises-the-developmental-competence-of-bovine-embryos
#3
Ken-Ichi Yamanaka, Hafiza Khatun, Junki Egashira, Ahmed Zaky Balboula, Hideki Tatemoto, Miki Sakatani, Naoki Takenouchi, Yasuhiko Wada, Masashi Takahashi
Heat stress can cause significant reproductive dysfunction in mammals and previous studies report that expression and activity of cathepsin B (CTSB), a lysosomal cysteine protease, is negatively correlated with the developmental competence of bovine oocytes and embryos. However, the relationship between heat shock (HS) and CTSB remains largely unknown. Here, we investigated the effects of HS during IVF and early embryonic stages of IVC on CTSB activity and developmental competence in bovine embryos. HS (40 °C for 6 h during IVF and 20 h during IVC) caused a significant increase in CTSB activity irrespective of the developmental stage or duration of HS...
April 6, 2018: Theriogenology
https://www.readbyqxmd.com/read/29677631/enhancement-of-monoclonal-antibody-production-after-single-and-combination-treatment-of-the-hybridoma-cells-with-all-trans-retinoic-acid-and-docosahexaenoic-acid-an-in-vitro-and-in-vivo-study
#4
Mohsen Rokni, Ali Reza Razavi, Fazel Shokri, Kazem Ahmadi Kia, Farid Solaymani-Mohammadi, Reza Chahardoli, Ali Akbar Saboor-Yaraghi
Murine hybridoma cells can produce monoclonal antibody (MAb) and the production of these antibodies in culture and peritoneum can be affected by different factors, including stimulants, inhibitors and supplements. Among these factors, the impact of micronutrients on the production of MAbs by mouse hybridoma cells has not fully been explored. In this study the murine hybridoma cells, M3C5, were cultured and treated with different concentrations of ATRA and DHA, alone, in combinations, and at different time of exposure...
April 17, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29677573/evidence-on-the-effectiveness-of-mosses-for-biomonitoring-of-microplastics-in-fresh-water-environment
#5
F Capozzi, R Carotenuto, S Giordano, V Spagnuolo
Mosses are well known as biomonitors of fresh water for metal pollutants, but no studies were reported so far about their ability to intercept plastic particles, although this kind of pollution has become an urgent issue worldwide. In the present work, the interaction between the moss Sphagnum palustre L. cultured in vitro and polystyrene nanoparticles (NPs) was studied for the first time in a laboratory experiment, in the view of using moss transplants for detecting microplastics in fresh water environments...
April 14, 2018: Chemosphere
https://www.readbyqxmd.com/read/29677555/matrix-architecture-plays-a-pivotal-role-in-3d-osteoblast-migration-the-effect-of-interstitial-fluid-flow
#6
Cristina Del Amo, Vanesa Olivares, Mar Cóndor, Alejandro Blanco, Jorge Santolaria, Jesús Asín, Carlos Borau, José Manuel García-Aznar
Osteoblast migration is a crucial process in bone regeneration, which is strongly regulated by interstitial fluid flow. However, the exact role that such flow exerts on osteoblast migration is still unclear. To deepen the understanding of this phenomenon, we cultured human osteoblasts on 3D microfluidic devices under different fluid flow regimes. Our results show that a slow fluid flow rate by itself is not able to alter the 3D migratory patterns of osteoblasts in collagen-based gels but that at higher fluid flow rates (increased flow velocity) may indirectly influence cell movement by altering the collagen microstructure...
April 10, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29677545/protective-effects-of-silk-lutein-extract-from-bombyx-mori-cocoons-on-%C3%AE-amyloid-peptide-induced-apoptosis-in-pc12-cells
#7
Nongnuch Singhrang, Chainarong Tocharus, Sarinthorn Thummayot, Manote Sutheerawattananonda, Jiraporn Tocharus
Beta-amyloid (Aβ) peptide, the hallmark of Alzheimer's disease (AD), invokes a cascade of oxidative damage to neurons and eventually leads to neuronal death. This study evaluated the protective effects of lutein extract from yellow cocoons of Bombyx mori, and its underlying mechanisms against was investigated to assess its protective effects and the underlying mechanisms against Aβ25-35 -induced neuronal cell death in cultured rat pheochromocytoma (PC12) cells. Aβ25-35 -induced neuronal toxicity is characterized by decrease in cell viability, increase in intracellular reactive oxygen species (ROS) production, activation of mitochondrial death pathway, and activation the phospholyration of mitogen-activated protein kinase (MAPKs) pathway...
April 17, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29677525/insights-from-diversified-anti-angiogenic-models-role-of-%C3%AE-interferon-inducer-deae-dextran
#8
Anita K Bakrania, Bhavesh C Variya, Snehal S Patel
BACKGROUND: Angiogenesis, the physiological process involving growth of new blood vessels from preexisting vessels, is essential for organ growth and repair. However, the imbalance in angiogenesis contributes to copious pathologies including cancer. Preceding the development of anti-angiogenic or proangiogenic agents, its evaluation is equally imperative; hence, precise and adequate models required. Valid mammalian models are expensive, time-consuming and not easy to set up, instigating legal and ethical aspects making it necessary to establish models with satisfactory activity and limited drawbacks...
April 17, 2018: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29677448/self-assembled-ph-responsive-polymeric-micelles-for-highly-efficient-non-cytotoxic-delivery-of-doxorubicin-chemotherapy-to-inhibit-macrophage-activation-in-vitro-investigation
#9
Zhi-Sheng Liao, Shan-You Huang, Jyun-Jie Huang, Jem-Kun Chen, Ai-Wei Lee, Juin-Yih Lai, Duu-Jong Lee, Chih-Chia Cheng
Self-assembled pH-responsive polymeric micelles, a combination of hydrophilic poly(ethylene glycol) segments and hydrogen bonding interactions within a biocompatible polyurethane substrate, can spontaneously self-assemble into highly controlled, nanosized micelles in aqueous solution. These newly-developed micelles exhibit excellent pH-responsive behavior and biocompatibility, highly controlled drug (doxorubicin; DOX) release behavior and high drug encapsulation stability in different aqueous environments, making the micelles highly attractive potential candidates for safer, more effective drug delivery in applications such as cancer chemotherapy...
April 20, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29677215/tracking-the-fate-of-adoptively-transferred-myeloid-derived-suppressor-cells-in-the-primary-breast-tumor-microenvironment
#10
Jaclyn Sceneay, Christoph M Griessinger, Sabrina H L Hoffmann, Shu Wen Wen, Christina S F Wong, Sophie Krumeich, Manfred Kneilling, Bernd J Pichler, Andreas Möller
Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of immature myeloid progenitor cells that are expanded in cancer and act as potent suppressors of the anti-tumor immune response. MDSCs consist of two major subsets, namely monocytic (M-) MDSCs and granulocytic (G-) MDSCs that differ with respect to their phenotype, morphology and mechanisms of suppression. Here, we cultured bone marrow cells with IL-6 and GM-CSF in vitro to generate a population of bone marrow MDSCs (BM-MDSCs) similar to G-MDSCs from tumor-bearing mice in regards to phenotype, morphology and suppressive-function...
2018: PloS One
https://www.readbyqxmd.com/read/29677034/functional-somatic-symptoms-across-cultures-perceptual-and-health-care-issues
#11
Bernd Löwe, Christian Gerloff
Functional neurological disorders are conceptualized as patterns of neurological symptoms that cannot be attributed to a clear organic etiology. The study by Wilkins et al. published in this issue of Psychosomatic Medicine, revealed that 8.2% of patients who were initially presented with suspected stroke were later diagnosed with functional disorders, i.e., "functional stroke mimics." However, the percentage of functional stroke mimics varied substantially with patients' nationality, age, and sex...
April 19, 2018: Psychosomatic Medicine
https://www.readbyqxmd.com/read/29676779/synergistic-effect-of-interleukin-17-and-tumor-necrosis-factor-%C3%AE-on-inflammatory-response-in-hepatocytes-through-interleukin-6-dependent-and-independent-pathways
#12
Audrey Beringer, Ndieme Thiam, Jennifer Molle, Birke Bartosch, Pierre Miossec
The pro-inflammatory cytokines IL-17 and TNFα are targets for treatment in many chronic inflammatory diseases. Here, we examined their role in liver inflammatory response compared to that of IL-6. Human hepatoma cells (HepaRG, Huh7.5 and HepG2 cells) and primary human hepatocytes (PHH) were cultured with IL-6, IL-17 and/or TNFα. To determine the contribution of the IL-6 pathway in the IL-17/TNFα-mediated effect, an anti-IL-6 receptor antibody was used. IL-17 and TNFα increased in synergy IL-6 secretion by HepaRG cells and PHH but not by Huh7...
April 20, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29676778/indirect-co-cultures-of-healthy-mesenchymal-stem-cells-restore-the-physiological-phenotypic-profile-of-psoriatic-mesenchymal-stem-cells
#13
A Campanati, M Orciani, G Sorgentoni, V Consales, M Mattioli Belmonte, R Di Primio, A Offidani
Psoriasis microenvironment, characterized by an imbalance between Th1/Th17 and Th2 cytokines, influences also mesenchymal stem cells (MSCs) phenotypic profile. MSCs from healthy donors (H-MSCs) can exert a strong paracrine effect by secreting active soluble factors, able to modulate the inflammation in the microenvironment. To evaluate the influence of H-MSCs on MSCs from psoriatic patients (PsO-MSCs), H-MSCs and PsO-MSCs were isolated and characterized. Indirect co-culture of H-MSCs with PsO-MSCs was performed; effects on proliferation and expression of cytokines linked to Th1/Th17 and Th2 pathways were assayed before and after co-culture...
April 20, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29676768/exposure-of-bacillus-subtilis-to-silver-inhibits-activity-of-cytochrome-c-oxidase-in-vivo-via-interaction-with-sco-the-cu-a-assembly-protein
#14
Shina Hussain, Diann Andrews, Bruce C Hill
Silver has long been used as an antimicrobial agent in general and medicinal use. Here, we observe that exposure of the Gram-positive, endospore-forming bacterium Bacillus subtilis to Ag(i) effects growth in a biphasic manner. In the first phase at Ag(i) concentrations below 50 μM B. subtilis growth is not affected, but activity of the respiratory enzyme cytochrome c oxidase is disrupted completely. Between 50 to 100 μM Ag(i) B. subtilis growth is drastically diminished and completely absent above 100 μM Ag(i)...
April 20, 2018: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/29676651/immunohistochemical-localization-of-fam83h-during-fluorosis-induced-mouse-molar-development
#15
Guanghui Shi, Yanyan Zhou, Jing Guo, Zhongrui Yang, Yang Lu, Yaling Song, Jie Jia
The clinical and pathological features of fluorosis are similar to amelogenesis imperfecta (AI) caused by FAM83H mutations, suggesting that excess fluoride could have effects on the expression of Fam83h. Our previous study found that Fam83h was downregulated by fluorosis induction in ameloblasts; the purpose of this study was to underline the importance of understanding the relationship between fluoride administration and Fam83h expression in vivo. A total of 80 healthy female adult Kunming mice were randomly divided into control group or F group that induced the clinical features of fluorosis...
April 1, 2018: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/29676650/the-pluripotency-factor-musashi-2-is-a-novel-target-for-lung-cancer-therapy
#16
Mary R Zhang, Sichuan Xi, Vivek Shukla, Julie A Hong, Haobin Chen, Yin Xiong, R Taylor Ripley, Chuong D Hoang, David S Schrump
Previously we reported that mithramycin represses multiple pathways critical for stem cell signaling and pluripotency in lung cancer cells. This phenomenon coincided with decreased side population fraction and dramatic dose-dependent growth arrest of lung cancer cells in vitro and in vivo. In the present study, microarray, quantitative reverse transcriptase polymerase chain reaction and immunoblot experiments were performed to further examine the effects of mithramycin on stem cell gene expression in lung cancer cells...
April 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29676641/toxic-and-genomic-influences-of-inhaled-nanomaterials-as-a-basis-for-predicting-adverse-outcome
#17
Penny Nymark, Pekka Kohonen, Vesa Hongisto, Roland C Grafström
An immense variety of different types of engineered nanomaterials are currently being developed and increasingly applied to consumer products. Importantly, engineered nanomaterials may pose unexplored adverse health effects because of their small size. Particularly in occupational settings, the dustiness of certain engineered nanomaterials involves risk of inhalation and influences on lung function. These facts call for quick and cost-effective safety testing practices, such as that obtained through multiparametric high-throughput screening using cultured human lung cells...
April 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29676637/epigenomic-alterations-and-gene-expression-profiles-in-human-respiratory-epithelial-cells-mediated-by-hookah-and-cigarette-smoke
#18
Yin Xiong, Sichuan Xi, Jigui Shan, Elvin Hekimoglu, Shih-Hsin Hsiao, Mary Zhang, Julie A Hong, Chris Tao, Haobin Chen, R Taylor Ripley, Chuong D Hoang, David S Schrump
RATIONALE: The effects of hookah smoke on respiratory epithelia have not been well characterized. OBJECTIVES: To characterize and compare the effects of hookah tobacco smoke and conventional cigarette smoke on the epigenome and transcriptome of human respiratory epithelia. METHODS: Normal human small airway epithelial cells and cyclin-dependent kinase 4/human telomerase reverse transcriptase-immortalized human bronchial epithelial cells were cultured for 5 days in normal media in the presence or absence of water pipe condensates or cigarette smoke condensates under relevant exposure conditions...
April 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29676623/nicotine-downregulates-the-compensatory-angiotensin-converting-enzyme-2-angiotensin-type-2-receptor-of-the-renin-angiotensin-system
#19
Xinping Yue, Tyler M Basting, Thomas W Flanagan, Jiaxi Xu, Thomas D Lobell, Nicholas W Gilpin, Jason D Gardner, Eric Lazartigues
RATIONALE: Smoking is a major risk factor for the development of cardiovascular and pulmonary diseases. The importance of the renin-angiotensin system in the development of cardiovascular and pulmonary disease is well established. Angiotensin-II, by means of its type 1 receptor (angiotensin type 1 receptor, AT1 R), promotes increased sympathetic activity, salt and water reabsorption, vasoconstriction, inflammation, and aldosterone and vasopressin release, contributing to tissue fibrosis, endothelium dysfunction, and hypertension...
April 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29676510/economic-evaluations-of-system-based-obesity-interventions-the-case-for-a-new-approach
#20
REVIEW
D Sonntag, R Sweeney, D Litaker, M Moodie
System-based interventions are of increasing interest as they seek to modify environments (e.g. socio-cultural system, transport system or policy system) that promote development of conditions such as obesity and its related risk factors. In our commentary, we draw attention to features of the system-based approach that may explain the relative absence of economic evaluations of the cost-effectiveness of these interventions, needed to guide decision-making on which to deploy. We present and discuss potentially applicable methods and alternative approaches based on our experiences in two major system-based interventions currently underway (in Melbourne, Australia and Gaggenau, Germany) that begin to fill this gap...
April 20, 2018: Obesity Reviews: An Official Journal of the International Association for the Study of Obesity
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