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https://www.readbyqxmd.com/read/29223065/arabinogalactan-proteins-immunolocalization-in-the-developing-ovary-of-a-facultative-apomict-fragaria-x-ananassa-duch
#1
Agata Leszczuk, Ewa Szczuka
BACKGROUND AND AIMS: Arabinogalactan proteins are present in the extracellular matrix and their occurrence is developmentally regulated. The studies were carried out to localise arabinogalactan proteins in ovary cells of Fragaria x ananassa Duchesne (strawberry) during megasporogenesis, megagametogenesis, and formation of the embryo. METHODS: The research included studies of ovary histochemistry and immunofluorescence labelling of AGP epitopes was performed with antibodies JIM13, JIM15 and MAC207...
December 5, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29222033/multiple-perspectives-of-qingkailing-injection-fraction-single-compound-in-revealing-the-hepatotoxicity-of-baicalin-and-hyodeoxycholic-acid
#2
Jiayu Zhang, Shifeng Wang, Lulu Xu, Qiao Zhang, Zhanpeng Shang, Yanling Zhang, Qinghua Wu, Shiyou Li, Yanjiang Qiao
ETHNOPHARMACOLOGICAL RELEVANCE: The complexity of ingredients in traditional Chinese medical formulas and the limited consideration of toxicological responses are fundamental issues that hamper prognostic information of drug quality control. MATERIALS AND METHODS: A multidisciplinary approach for quality control of Qingkailing injection (QKL) regarding drug induced liver toxicity was described for the first time. High content image analysis (HCA) was combined with reverse-phase chromatographic separation and high-resolution MS detection technologies to provide the dynamic responses of HepG2 cell injury...
December 5, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29222028/sodium-butyrate-enhanced-physical-barrier-function-referring-to-nrf2-jnk-and-mlck-signaling-pathways-in-the-intestine-of-young-grass-carp-ctenopharyngodon-idella
#3
Pei Wu, Li Tian, Xiao-Qiu Zhou, Wei-Dan Jiang, Yang Liu, Jun Jiang, Fei Xie, Sheng-Yao Kuang, Ling Tang, Wu-Neng Tang, Juan Yang, Yong-An Zhang, He-Qun Shi, Lin Feng
This study evaluated the effect of dietary sodium butyrate (SB) supplementation on the intestinal physical barrier function of young grass carp (Ctenopharyngodon idella). The fish were fed one powdery sodium butyrate (PSB) diet (1000.0 mg kg-1 diet) and five graded levels of microencapsulated sodium butyrate (MSB) diets: 0.0 (control), 500.0, 1000.0, 1500.0 and 2000.0 mg kg-1 diet for 60 days. Subsequently, a challenge test was conducted by injection of Aeromonas hydrophila to explore the effect of SB supplementation on intestinal physical barrier function and the potential mechanisms in fish...
December 5, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29221794/glp-1-action-in-the-mouse-bed-nucleus-of-the-stria-terminalis
#4
Diana L Williams, Nicole A Lilly, Ian J Edwards, Pallas Yao, James E Richards, Stefan Trapp
Glucagon-like peptide-1 (GLP-1) injected into the brain reduces food intake. Similarly, activation of preproglucagon (PPG) cells in the hindbrain which synthesize GLP-1, reduces food intake. However, it is far from clear whether this happens because of satiety, nausea, reduced reward, or even stress. Here we explore the role of the bed nucleus of the stria terminalis (BNST), an area involved in feeding control as well as stress responses, in GLP-1 responses. Using cre-expressing mice we visualized projections of NTS PPG neurons and GLP-1R-expressing BNST cells with AAV-driven Channelrhodopsin-YFP expression...
December 5, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29221725/protective-effects-of-polyphenol-rich-infusions-from-carob-ceratonia-siliqua-leaves-and-cladodes-of-opuntia-ficus-indica-against-inflammation-associated-with-diet-induced-obesity-and-dss-induced-colitis-in-swiss-mice
#5
Ikram Aboura, Abdelhafid Nani, Meriem Belarbi, Babar Murtaza, Aurélie Fluckiger, Adélie Dumont, Chahid Benammar, Moufida Saidani Tounsi, François Ghiringhelli, Mickaël Rialland, Naim Akhtar Khan, Aziz Hichami
In the present study, we have investigated the effects of polyphenol-rich infusions from carob leaves and OFI-cladodes on inflammation associated with obesity and dextran sulfate sodium (DSS)-induced ulcerative colitis in Swiss mice. In vitro studies revealed that aqueous extracts of carob leaves and OFI-cladodes exhibited anti-inflammatory properties marked by the inhibition of IL-6, TNF-α and nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells concomitant with NF-κβ nucleus translocation inhibition...
December 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29221639/nerve-growth-factor-released-from-collagen-scaffolds-protects-axotomized-cholinergic-neurons-of-the-basal-nucleus-of-meynert-in-organotypic-brain-slices
#6
Bettina M Foidl, Buket Ucar, Alina Schwarz, Ana L Rebelo, Abhay Pandit, Christian Humpel
BACKGROUND: Alzheimeŕs disease is accompanied by cell death of cholinergic neurons, resulting in cognitive impairment and memory loss. Nerve growth factor (NGF) is the most potent protein to support survival of cholinergic neurons. New METHOD: Organotypic brain slices of the basal nucleus of Meynert (nBM) are a valuable tool to study cell death of axotomized cholinergic neurons, as well as protective effects of NGF added into the medium. The aim of the present study is to use collagen scaffolds crosslinked with polyethylineglycole and load with NGF to target delivery of NGF to organotypic nBM brain slices...
December 5, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29220720/induction-of-thymic-stromal-lymphopoietin-by-a-steroid-alkaloid-derivative-in-mouse-keratinocytes
#7
Yan Weng, Natsumi Mizuno, Jiangxu Dong, Ryosuke Segawa, Takayuki Yonezawa, Byung Yoon Cha, Je-Tae Woo, Takahiro Moriya, Masahiro Hiratsuka, Noriyasu Hirasawa
Thymic stromal lymphopoietin (TSLP) plays critical roles in inducing and exacerbating allergic diseases. Chemical compounds that induce TSLP production can enhance sensitization to antigens and exacerbate allergic inflammation. Hence, identifying such chemicals will be important to prevent an increase in allergic diseases. In the present study, we found, for the first time, that a steroid alkaloid derivative, code no. 02F04, concentration and time dependently induced mRNA expression and production of TSLP in a mouse keratinocyte cell line, PAM212...
December 5, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29220646/dissecting-cell-type-composition-and-activity-dependent-transcriptional-state-in-mammalian-brains-by-massively-parallel-single-nucleus-rna-seq
#8
Peng Hu, Emily Fabyanic, Deborah Y Kwon, Sheng Tang, Zhaolan Zhou, Hao Wu
Massively parallel single-cell RNA sequencing can precisely resolve cellular diversity in a high-throughput manner at low cost, but unbiased isolation of intact single cells from complex tissues such as adult mammalian brains is challenging. Here, we integrate sucrose-gradient-assisted purification of nuclei with droplet microfluidics to develop a highly scalable single-nucleus RNA-seq approach (sNucDrop-seq), which is free of enzymatic dissociation and nucleus sorting. By profiling ∼18,000 nuclei isolated from cortical tissues of adult mice, we demonstrate that sNucDrop-seq not only accurately reveals neuronal and non-neuronal subtype composition with high sensitivity but also enables in-depth analysis of transient transcriptional states driven by neuronal activity, at single-cell resolution, in vivo...
December 7, 2017: Molecular Cell
https://www.readbyqxmd.com/read/29220539/significance-and-mechanism-of-androgen-receptor-ar-overexpression-and-ar-mtor-crosstalk-in-hepatocellular-carcinoma
#9
Hong Zhang, Xiaoxing Li, Yang Yang, Yanjie Zhang, Hui-Yun Wang, X F Steven Zheng
Hepatocellular carcinoma (HCC) is a male-dominant cancer and androgen receptor (AR) has been linked to the pathogenesis of HCC. However, AR expression and its precise role in HCC remain controversial. Moreover, previous anti-androgen and -AR clinical trials in HCC failed to demonstrate clinical benefits. In this study, we found that AR is overexpressed in the nucleus of approximately 37% HCC tumors, which is significantly associated with advanced disease stage and poor survival. AR overexpression in HCC cells markedly alters AR-dependent transcriptome, stimulates oncogenic growth and determines therapeutic response to enzalutamide, a second generation of AR antagonist...
December 8, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29220411/hexahydrocurcumin-protects-against-cerebral-ischemia-reperfusion-injury-attenuates-inflammation-and-improves-antioxidant-defenses-in-a-rat-stroke-model
#10
Piyawadee Wicha, Jiraporn Tocharus, Adchara Janyou, Jinatta Jittiwat, Chatchawan Changtam, Apichart Suksamrarn, Chainarong Tocharus
The purpose of the present experiment was to investigate whether hexahydrocurcumin (HHC) attenuates brain damage and improves functional outcome via the activation of antioxidative activities, anti-inflammation, and anti-apoptosis following cerebral ischemia/reperfusion (I/R). In this study, rats with cerebral I/R injury were induced by a transient middle cerebral artery occlusion (MCAO) for 2 h, followed by reperfusion. The male Wistar rats were randomly divided into five groups, including the sham-operated, vehicle-treated, 10 mg/kg HHC-treated, 20 mg/kg HHC-treated, and 40 mg/kg HHC-treated I/R groups...
2017: PloS One
https://www.readbyqxmd.com/read/29220192/fluidic-microactuation-of-flexible-electrodes-for-neural-recording
#11
Flavia Vitale, Daniel Vercosa, Alexander V Rodriguez, Sushma Sri Pamulapati, Frederik Seibt, Eric Lewis, Jiaxi Stephen Yan, Krishna Badhiwala, Mohammed Adnan, Gianni Royer-Carfagni, Michael Beierlein, Caleb Kemere, Matteo Pasquali, Jacob Robinson
Soft and conductive nanomaterials like carbon nanotubes, graphene, and nanowire scaffolds have expanded the family of ultra-flexible microelectrodes that can bend and flex with the natural movement of the brain, reduce the inflammatory response and improve the stability of long-term neural recordings. However, current methods to implant these highly flexible electrodes rely on temporary stiffening agents that temporarily increase the electrode size and stiffness thus aggravating neural damage during implantation, which can lead to cell loss and glial activation that persists even after the stiffening agents are removed or dissolve...
December 8, 2017: Nano Letters
https://www.readbyqxmd.com/read/29219947/dendritic-cell-nuclear-protein-1-regulates-melatonin-biosynthesis-by-binding-to-bmal1-and-inhibiting-the-transcription-of-n-acetyltransferase-in-c6-cells
#12
Dong Chen, Yi-Pei Li, Yan-Xia Yu, Tian Zhou, Chao Liu, Er-Kang Fei, Feng Gao, Chen-Chen Mu, Hai-Gang Ren, Guang-Hui Wang
Dendritic cell nuclear protein-1 (DCNP1) is a protein associated with major depression. In the brains of depression patients, DCNP1 is up-regulated. However, how DCNP1 participates in the pathogenesis of major depression remains unknown. In this study, we first transfected HEK293 cells with EGFP-DCNP1 and demonstrated that the full-length DCNP1 protein was localized in the nucleus, and RRK (the residues 117-119) composed its nuclear localization signal (NLS). An RRK-deletion form of DCNP1 (DCNP1ΔRRK) and truncated form (DCNP11-116), each lacking the RRK residues, did not show the specific nuclear localization like full-length DCNP1 in the cells...
December 7, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29219034/measuring-relative-coupling-strength-in-circadian-systems
#13
Christoph Schmal, Erik D Herzog, Hanspeter Herzel
Modern imaging techniques allow the monitoring of circadian rhythms of single cells. Coupling between these single cellular circadian oscillators can generate coherent periodic signals on the tissue level that subsequently orchestrate physiological outputs. The strength of coupling in such systems of oscillators is often unclear. In particular, effects on coupling strength by varying cell densities, by knockouts, and by inhibitor applications are debated. In this study, we suggest to quantify the relative coupling strength via analyzing period, phase, and amplitude distributions in ensembles of individual circadian oscillators...
December 1, 2017: Journal of Biological Rhythms
https://www.readbyqxmd.com/read/29218943/-effect-of-germacrone-in-alleviating-huvecs-damaged-by-h2o2-induced-oxidative-stress
#14
Qiong-Fang Chen, Gang Wang, Li-Qing Tang, Xian-Wen Yu, Zhao-Fei Li, Xiu-Fen Yang
This study focuses on the protective effect of germacrone on human umbilical vein endothelial cells(HUVECs) damaged by H2O2-induced oxidative stress and its possible mechanisms. The oxidative damage model was established by using 500 μmol•L⁻¹ H2O2 to treat HUVECs for 3 hours, and then protected with different concentrations of germacrone for 24 hours. The effect of germacrone on cell viability of HUVECs damaged by H2O2 was detected by MTT. The contents of PGI2, TXB2, ET-1, t-PA, PAI-1, TNF-α and IL-6 were detected by ELISA...
September 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29218861/comparative-expression-patterns-of-sox2-and-sox19-genes-in-the-forebrain-of-developing-and-adult-turbot-scophthalmus-maximus
#15
Xoana Taboada, Ana Viñas, Fátima Adrio
The turbot, Scophthalmus maximus, belongs to the flatfishes (order Pleuronectiformes), which display substantial asymmetry of the olfactory organs and forebrain. Sox genes code for SRY-related HMG domain-bearing transcription factors involved in various developmental processes. Group B1 Sox genes as Sox2 and Sox19 appear to play major roles in neural development. Here, we characterized by in situ hybridization the developmental expression of Sox2 and Sox19 genes in metamorphic and postmetamorphic specimens and young adults of both sexes...
December 8, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/29218725/characterization-of-retinal-ganglion-cell-horizontal-cell-and-amacrine-cell-types-expressing-the-neurotrophic-receptor-tyrosine-kinase-ret
#16
Nadia Parmhans, Szilard Sajgo, Jingwen Niu, Wenqin Luo, Tudor Constantin Badea
We report the retinal expression pattern of Ret, a receptor tyrosine kinase for the Glial Derived Neurotrophic Factor (GDNF) family ligands (GFLs), during development and in the adult mouse. Ret is initially expressed in Retinal Ganglion Cells (RGCs), followed by Horizontal Cells (HCs) and Amacrine Cells (ACs), beginning with the early stages of postmitotic development. Ret expression persists in all three classes of neurons in the adult. Using RNA sequencing, immunostaining and random sparse recombination, we show that Ret is expressed in at least three distinct types of ACs, and ten types of RGCs...
December 8, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/29217590/a-mechanism-of-cohesin-dependent-loop-extrusion-organizes-zygotic-genome-architecture
#17
Johanna Gassler, Hugo B Brandão, Maxim Imakaev, Ilya M Flyamer, Sabrina Ladstätter, Wendy A Bickmore, Jan-Michael Peters, Leonid A Mirny, Kikuë Tachibana
Fertilization triggers assembly of higher-order chromatin structure from a condensed maternal and a naïve paternal genome to generate a totipotent embryo. Chromatin loops and domains have been detected in mouse zygotes by single-nucleus Hi-C (snHi-C), but not bulk Hi-C. It is therefore unclear when and how embryonic chromatin conformations are assembled. Here, we investigated whether a mechanism of cohesin-dependent loop extrusion generates higher-order chromatin structures within the one-cell embryo. Using snHi-C of mouse knockout embryos, we demonstrate that the zygotic genome folds into loops and domains that critically depend on Scc1-cohesin and that are regulated in size and linear density by Wapl...
December 7, 2017: EMBO Journal
https://www.readbyqxmd.com/read/29217107/the-underlying-physiological-basis-of-the-desert-rodent-meriones-shawi-s-survival-to-prolonged-water-deprivation-central-vasopressin-regulation-on-peripheral-kidney-water-channels-aqps-2
#18
A Elgot, O El Hiba, M Belkouch, H Gamrani
Meriones shawi (M. shawi) is a particular semi-desert rodent known by its resistance to long periods of thirst. The aim of the present investigation is to clarify the underlying mechanisms allowing M. shawi to resist to hard conditions of dehydration. For this reason we used two different approaches: i) a morphometric study, which consists in measuring the effect of dehydration on body and kidneys weights as well as the report kidney weight/body weight, ii) By immunohistochemistry, we proceed to study the effect of dehydration on the immunoreactivity of central vasopressin (AVP) and the kidney aquaporin-2 (AQP-2) which is a channel protein that allows water to permeate across cell membranes...
December 4, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/29216955/combined-toxicity-of-an-environmental-remediation-residue-magnetite-fe3o4-nanoparticles-cr-vi-adduct
#19
Zhuan Li, Miao Liu, Li Ke Chen, Guang Zhu Li
OBJECTIVE: This paper aims to elucidate the combined toxicity of magnetite nanoparticles/Chromium [MNPs/Cr(VI)] adducts. METHODS: The HEK293 cell was exposed to either Cr(VI) or MNPs, or their adducts MNPs/Cr(VI). The cytotoxicity was evaluated by assessing the cell viability, apoptosis, oxidative stress induction, and cellular uptake. RESULTS: The toxicity of formed adducts is significantly reduced when compared to Cr(VI) anions. We found that the cellular uptake of MNPs/Cr(VI) adduct was rare, only few particles were endocytosed from the extracellular fluid and not accumulated in the cell nucleus...
November 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/29216821/molecular-targets-and-signaling-pathways-regulated-by-nuclear-translocation-of-syndecan-1
#20
Tünde Szatmári, Filip Mundt, Ashish Kumar-Singh, Lena Möbus, Rita Ötvös, Anders Hjerpe, Katalin Dobra
BACKGROUND: The cell-surface heparan sulfate proteoglycan syndecan-1 is important for tumor cell proliferation, migration, and cell cycle regulation in a broad spectrum of malignancies. Syndecan-1, however, also translocates to the cell nucleus, where it might regulate various molecular functions. RESULTS: We used a fibrosarcoma model to dissect the functions of syndecan-1 related to the nucleus and separate them from functions related to the cell-surface. Nuclear translocation of syndecan-1 hampered the proliferation of fibrosarcoma cells compared to the mutant lacking nuclear localization signal...
December 8, 2017: BMC Cell Biology
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