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https://www.readbyqxmd.com/read/28926878/-effects-of-arnebia-root-oil-on-wound-healing-of-rats-with-full-thickness-skin-defect-and-the-related-mechanism
#1
J Y Shen, Q Ma, Z B Yang, J J Gong, Y S Wu
Objective: To observe the effects of arnebia root oil on wound healing of rats with full-thickness skin defect, and to explore the related mechanism. Methods: Eighty SD rats were divided into arnebia root oil group and control group according to the random number table, with 40 rats in each group, then full-thickness skin wounds with area of 3 cm×3 cm were inflicted on the back of each rat. Wounds of rats in arnebia root oil group and control group were treated with sterile medical gauze and bandage package infiltrated with arnebia root oil gauze or Vaseline gauze, respectively, with dressing change of once every two days...
September 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28926236/biofilms-benefiting-plants-exposed-to-zno-and-cuo-nps-studied-with-a-root-mimetic-hollow-fiber-membrane
#2
Michelle Bonebrake, Kaitlyn C Anderson, Jonathan Valiente, Astrid Rosa Jacobson, Joan E McLean, Anne J Anderson, David W Britt
Plants exist with a consortium of microbes that influence plant health, including response to biotic and abiotic stress. While nanoparticle (NP) - plant interactions are increasingly studied, the effect of NPs on the plant microbiome is less researched. Here a root-mimetic hollow fiber membrane (HFM) is presented for generating biofilms of plant-associated microbes nurtured by artificial root exudates (AREs) to correlate exudate composition with biofilm formation and response to NPs. Two microbial isolates from field-grown wheat, a bacillus endophyte and a pseudomonad root surface colonizer, were examined on HFMs fed with AREs varying in N and C composition...
September 19, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28924037/intrinsically-disordered-sequences-enable-modulation-of-protein-phase-separation-through-distributed-tyrosine-motifs
#3
Yuan Lin, Simon L Currie, Michael Keith Rosen
Liquid-liquid phase separation (LLPS) is thought to contribute to establishment of many biomolecular condensates, eukaryotic cell structures that concentrate diverse macromolecules but lack a bounding membrane. RNA granules control RNA metabolism and comprise a large class of condensates that are enriched in RNA-binding proteins and RNA molecules. Many RNA granule proteins are composed of both modular domains and intrinsically disordered regions (IDRs) having low amino acid sequence complexity. Phase separation of these molecules likely plays an important role in the generation and stability of RNA granules...
September 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28923525/morphological-and-functional-characterization-of-the-hemocytes-from-the-pearl-oyster-pteria-hirundo-and-their-immune-responses-against-vibrio-infections
#4
Graziela Cleuza Vieira, Patrícia Mirella da Silva, Margherita Anna Barracco, Augusto Ferrari Hering, Marcos Caivano Pedroso de Albuquerque, Jaqueline da Rosa Coelho, Éder Carlos Schmidt, Zenilda Laurita Bouzon, Rafael Diego Rosa, Luciane Maria Perazzolo
Hemocyte populations of the pearl oyster Pteria hirundo were characterized at morphological, ultrastructural and functional levels. Three main hemocyte populations were identified: hyalinocytes, granulocytes and blast-like cells. Hyalinocytes were the most abundant population (88.2%) characterized by the presence of few or no granules in the cytoplasm and composed by two subpopulations, large and small hyalinocytes. Comparatively, granulocytes represented 2.2% of the hemocyte population and were characterized by the presence of numerous large electron-lucid granules in the cytoplasm...
September 16, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28922839/first-description-of-a-new-uncultured-epsilon-sulfur-bacterium-colonizing-marine-mangrove-sediment-in-the-caribbean-thiovulum-sp-strain-karukerense
#5
Olivier Gros
Here, the first description is reported of an epsilon sulfur-oxidizing bacterium from sulfide-rich sediments of marine mangrove in the Caribbean. By transition electron microscopy it was shown that this new strain contains intracytoplasmic large internal sulfur granules, which was confirmed by energy-dispersive X-ray spectroscopy analyses performed using an environmental scanning electron microscope. The sulfur distribution obtained for this sulfur-oxidizing bacterial strain allowed us to conclude that elemental sulfur is formed as an intermediate oxidation product and stored intracellularly...
October 2, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28922546/single-dose-local-administration-of-teriparatide-with-a-octacalcium-phosphate-collagen-composite-enhances-bone-regeneration-in-a-rodent-critical-sized-calvarial-defect
#6
Fumihiko Kajii, Atsushi Iwai, Hidenori Tanaka, Keiko Matsui, Tadashi Kawai, Shinji Kamakura
Octacalcium phosphate and collagen composite (OCP/Col) achieves stable bone regeneration without cell transplantation in preclinical studies. Recently, a sponsor-initiated clinical trial was conducted to commercialize the material. The present study investigated bone regeneration by OCP/Col with the single local administration of teriparatide (parathyroid hormone 1-34; TPTD). OCP/Col was prepared by mixing sieved granules of OCP and atelocollagen for medical use and a disk was molded. After the creation of a rodent critical-sized calvarial defect, OCP/Col or OCP/Col with dripped TPTD solution (1...
September 18, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28922523/mature-b-cells-accelerate-wound-healing-after-acute-and-chronic-diabetic-skin-lesions
#7
Ruxandra F Sîrbulescu, Chloe K Boehm, Erin Soon, Moses Q Wilks, Iulian Ilieş, Hushan Yuan, Ben Maxner, Nicolas Chronos, Charalambos Kaittanis, Marc D Normandin, Georges El Fakhri, Dennis P Orgill, Ann E Sluder, Mark C Poznansky
Chronic wounds affect 12-15% of patients with diabetes and are associated with a drastic decrease in their quality of life. Here we demonstrate that purified mature naïve B220(+) /CD19(+) /IgM(+) /IgD(+) B cells improve healing of acute and diabetic murine wounds after a single topical application. B cell treatment significantly accelerated acute wound closure by 2-3 days in wild-type mice and 5-6 days in obese diabetic mice. The treatment led to full closure in 43% of chronic diabetic wounds, as compared to only 5% in saline-treated controls...
September 18, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/28919921/how-do-flavivirus-infected-cells-resist-arsenite-induced-stress-granule-formation
#8
EDITORIAL
Mausumi Basu, Margo A Brinton
No abstract text is available yet for this article.
June 2017: Future Virology
https://www.readbyqxmd.com/read/28919516/time-dependent-effects-of-perfluorinated-compounds-on-viability-in-cerebellar-granule-neurons-dependence-on-carbon-chain-length-and-functional-group-attached
#9
Hanne Friis Berntsen, Cesilie Granum Bjørklund, Jean-Nicolas Audinot, Tim Hofer, Steven Verhaegen, Esther Lentzen, Arno Christian Gutleb, Erik Ropstad
The toxicity of long chained perfluoroalkyl acids (PFAAs) has previously been reported to be related to the length of the perfluorinated carbon chain and functional group attached. In the present study, we compared the cytotoxicity of six PFAAs, using primary cultures of rat cerebellar granule neurons (CGNs). Two perfluoroalkyl sulfonic acids (PFSAs, chain length C6 and C8) and four perfluoroalkyl carboxylic acids (PFCAs, chain length C8-C11) were studied. These PFAAs have been detected in human blood and the brain tissue of mammals...
September 14, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28919410/tetrabromobisphenol-a-disturbs-zinc-homeostasis-in-cultured-cerebellar-granule-cells-a-dual-role-in-neurotoxicity
#10
Elzbieta Zieminska, Anna Ruszczynska, Jerzy W Lazarewicz
The brominated flame retardant tetrabromobisphenol A (TBBPA) has recognized neurotoxic properties mediated by intracellular Ca(2+) imbalance and oxidative stress. Although these factors are known to trigger the release of Zn(2+) from intracellular stores, the effects of TBBPA on Zn(2+) homeostasis in neurons and the role of Zn(2+)in TBBPA neurotoxicity have not yet been studied. Therefore, we investigated zinc transients in primary cultures of rat cerebellar granule cells and assessed their involvement in TBBPA neurotoxicity...
September 14, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28919329/phospholipase-c%C3%AE-interacts-with-cytosolic-partners-to-regulate-cell-proliferation
#11
REVIEW
Suzanne Scarlata, Ashima Singla, Osama Garwain
Phospholipase Cβ (PLCβ) is the main effector of the Gαq signaling pathway relaying different extracellular sensory information to generate intracellular calcium signals. Besides this classic function, we have found that PLCβ plays an important but unknown role in regulating PC12 cell differentiation by interacting with components in the RNA-induced silencing machinery. In trying to understand the role of PLCβ in PC12 cell differentiation, we find that over-expressing PLCβ reduces PC12 cell proliferation while down-regulating PLCβ increases the rate of cell proliferation...
September 9, 2017: Advances in Biological Regulation
https://www.readbyqxmd.com/read/28918192/dielectric-properties-of-isolated-adrenal-chromaffin-cells-determined-by-microfluidic-impedance-spectroscopy
#12
A C Sabuncu, M Stacey, G L Craviso, N Semenova, P T Vernier, N Leblanc, I Chatterjee, J Zaklit
Knowledge of the dielectric properties of biological cells plays an important role in numerical models aimed at understanding how high intensity ultrashort nanosecond electric pulses affect the plasma membrane and the membranes of intracellular organelles. To this end, using electrical impedance spectroscopy, the dielectric properties of isolated, neuroendocrine adrenal chromaffin cells were obtained. Measured impedance data of the cell suspension, acquired between 1kHz and 20MHz, were fit into a combination of constant phase element and Cole-Cole models from which the effect of electrode polarization was extracted...
September 5, 2017: Bioelectrochemistry
https://www.readbyqxmd.com/read/28917309/toxic-action-of-acmella-oleracea-extract-on-the-male-reproductive-system-of-amblyomma-cajennense-ticks
#13
Luís Adriano Anholeto, Patrícia Rosa de Oliveira, Rodney Alexandre Ferreira Rodrigues, Lais Thiemi Yamane, Karina Neoob de Carvalho Castro, Allan Roberto Fernandes Ferreira, Maria Izabel Camargo-Mathias
The present study evaluated through morphohistological and histochemical techniques the effects of different concentrations of crude ethanolic extract of A. oleracea (EEAO) (Jambu) on the male reproductive system of Amblyomma cajennense sensu stricto (s.s.) ticks. The toxicity of this natural chemical was stablished, signalizing the promising potential of the compound as a strategy to control ectoparasites in the near future. For the experiment, 100 males fed on host rabbits with homogeneous weight (p>0...
September 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28916784/p-body-proteins-regulate-transcriptional-rewiring-to-promote-dna-replication-stress-resistance
#14
Raphael Loll-Krippleber, Grant W Brown
mRNA-processing (P-) bodies are cytoplasmic granules that form in eukaryotic cells in response to numerous stresses to serve as sites of degradation and storage of mRNAs. Functional P-bodies are critical for the DNA replication stress response in yeast, yet the repertoire of P-body targets and the mechanisms by which P-bodies promote replication stress resistance are unknown. In this study we identify the complete complement of mRNA targets of P-bodies during replication stress induced by hydroxyurea treatment...
September 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28916773/functional-organization-of-cytoplasmic-inclusion-bodies-in-cells-infected-by-respiratory-syncytial-virus
#15
Vincent Rincheval, Mickael Lelek, Elyanne Gault, Camille Bouillier, Delphine Sitterlin, Sabine Blouquit-Laye, Marie Galloux, Christophe Zimmer, Jean-François Eleouet, Marie-Anne Rameix-Welti
Infection of cells by respiratory syncytial virus induces the formation of cytoplasmic inclusion bodies (IBs) where all the components of the viral RNA polymerase complex are concentrated. However, the exact organization and function of these IBs remain unclear. In this study, we use conventional and super-resolution imaging to dissect the internal structure of IBs. We observe that newly synthetized viral mRNA and the viral transcription anti-terminator M2-1 concentrate in IB sub-compartments, which we term "IB-associated granules" (IBAGs)...
September 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28916331/depressive-like-phenotype-induced-by-prenatal-dexamethasone-in-mice-is-reversed-by-desipramine
#16
Mirko Conti, Stefan Spulber, Marilena Raciti, Sandra Ceccatelli
Exposure to prenatal insults has been associated with an increased risk for neuropsychiatric disorders, including depression, but the mechanisms are still poorly understood. Persistent alterations of the HPA axis feedback mechanism as well as adult impaired neurogenesis are believed to play a relevant role in the etiology of depression. In addition, growing evidence points at epigenetic reprogramming as a key factor. We have previously shown that prenatal exposure to the synthetic glucocorticoid dexamethasone (DEX) impairs neurogenesis and leads to late onset of depression-like behavior that does not respond to the SSRI antidepressant fluoxetine (FLX)...
September 12, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28914590/canine-salivary-glands-analysis-of-rab-and-snare-protein-expression-and-snare-complex-formation-with-diverse-tissue-properties
#17
Hiroshi Gomi, Hiromi Osawa, Rie Uno, Tadashi Yasui, Masahiro Hosaka, Seiji Torii, Azuma Tsukise
The comparative structure and expression of salivary components and vesicular transport proteins in the canine major salivary glands were investigated. Histochemical analysis revealed that the morphology of the five major salivary glands-parotid, submandibular, polystomatic sublingual, monostomatic sublingual, and zygomatic glands-was greatly diverse. Immunoblot analysis revealed that expression levels of α-amylase and antimicrobial proteins, such as lysozyme, lactoperoxidase, and lactoferrin, differed among the different glands...
September 1, 2017: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/28914464/expression-of-caveolin-1-in-the-interfollicular-but-not-the-follicle-associated-epithelial-cells-in-the-bursa-of-fabricius-of-chickens
#18
Ildikó Bódi, Krisztina Minkó, Orsolya Fölker, Zsófia Benyeda, Balázs Felföldi, Attila Magyar, Anna Kiss, Vilmos Palya, Imre Oláh
The surface epithelium of the bursa of Fabricius consists of interfollicular (IFE) and follicle-associated epithelium (FAE). The IFE comprises (i) cylindrical-shaped secretory cells (SC) and (ii) cuboidal basal cells (BCs). The FAE provides histological and two-way functional connections between the bursal lumen and medulla of the follicle. We used a carbon solution and anti-caveolin-1 (Cav-1) to study the endocytic activity of FAE. Carbon particles entered the intercellular space of FAE, but the carbon particles were not internalized by the FAE cells...
September 15, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28912643/decreased-glial-gaba-and-tonic-inhibition-in-cerebellum-of-mouse-model-for-attention-deficit-hyperactivity-disorder-adhd
#19
Yoo Sung Kim, Junsung Woo, C Justin Lee, Bo-Eun Yoon
About 5~12% of school-aged children suffer from the Attention-Deficit/Hyperactivity Disorder (ADHD). However, the core mechanism of ADHD remains unclear. G protein-coupled receptor kinase-interacting protein-1 (GIT1) has recently been reported to be associated with ADHD in human and the genetic deletion of GIT1 result in ADHD-like behaviors in mice. Mice lacking GIT1 shows a shift in neuronal excitation/inhibition (E/I) balance. However, the pricise mechanism for E/I imbalance and the role of neuron-glia interaction in GIT1 knockout (KO) mice have not been studied...
August 2017: Experimental Neurobiology
https://www.readbyqxmd.com/read/28912588/lipopolysaccharide-initiated-persistent-rhinitis-causes-gliosis-and-synaptic-loss-in-the-olfactory-bulb
#20
Sanae Hasegawa-Ishii, Atsuyoshi Shimada, Fumiaki Imamura
The olfactory mucosa (OM) is exposed to environmental agents and therefore vulnerable to inflammation. To examine the effects of environmental toxin-initiated OM inflammation on the olfactory bulb (OB), we induced persistent rhinitis in mice and analyzed the spatial and temporal patterns of histopathological changes in the OM and OB. Mice received unilateral intranasal administration of lipopolysaccharide (LPS) or saline three times per week, and were immunohistologically analyzed at 1, 3, 7, 14 and 21 days after the first administration...
September 14, 2017: Scientific Reports
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