keyword
MENU ▼
Read by QxMD icon Read
search

Nuclear deformation

keyword
https://www.readbyqxmd.com/read/29328882/effects-of-salvia-miltiorrhiza-polysaccharides-on-lipopolysaccharide-induced-inflammatory-factor-release-in-raw264-7-cells
#1
Chao Han, Jinkai Yang, Pengyan Song, Xiao Wang, Wanyu Shi
This study investigated the anti-inflammatory effects and possible underlying mechanisms of Salvia miltiorrhiza polysaccharides (SMP) in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. The cytotoxicity of SMP was detected by the MTT method. The morphological change of RAW264.7 was observed by Diff-Quik staining. Enzyme-linked immunosorbent assay was used to evaluate the production of cytokines in LPS-induced RAW264.7 cells. The nitric oxide (NO) kit assay detected the NO release from LPS-induced RAW264...
January 2018: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/29323493/luminescent-dinuclear-copper-i-complexes-as-potential-tadf-emitters-a-theoretical-study
#2
Ange Stoianov, Christophe Gourlaouen, Sergi Vela, Chantal Daniel
The excited states properties of a series of bi-nuclear NHetPHOS-Cu(I) complexes have been investigated by means of density functional theory (DFT) and time-dependent-DFT (TD-DFT). It is shown that experimental trends observed in powder, generally explored via S1 and T1 excited state energetics and S1 ⇔ T1 intersystem crossing (ISC) efficiency, are hardly analyzed on the basis of excited states properties calculated in solution. Indeed, several local minima corresponding to various structural deformations are put in evidence on the lowest excited state potential energy surfaces (PES) when solvent correction is applied leading to a four-state thermally activated delayed fluorescence (TADF) mechanism...
January 11, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29306823/sensitivity-of-medaka-oryzias-latipes-to-4-nonylphenol-subacute-exposure-erythrocyte-alterations-and-apoptosis
#3
Alaa El-Din H Sayed, Chisato Kataoka, Shoji Oda, Shosaku Kashiwada, Hiroshi Mitani
The present study was undertaken to assess the effects of the endocrine-disrupting compound; 4-nonylphenol (4-NP) in medaka (Oryzias latipes). The frequencies of erythrocyte alterations, apoptosis, and micronuclei were used as biological indicators of damage. Medaka were exposed 15 days to 4-NP at three sublethal concentrations (50, 80, and 100 μg/l 4-NP) and results compared with those of a previous study using catfish as an animal model. Exposure of medaka resulted in a dose-dependent increase in the frequency of erythrocyte alterations, apoptosis and micronucleus (MN)...
December 26, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29302551/prevalence-of-severe-acute-malnutrition-and-associated-sociodemographic-factors-among-children-aged-6-months-5-years-in-rural-population-of-northern-india-a-population-based-survey
#4
Ajeet Singh Bhadoria, Umesh Kapil, Rahul Bansal, R M Pandey, Bhawana Pant, Amit Mohan
Introduction: National Family Health Survey (NFHS)-3 documented that nearly 57 million children are undernourished in India, which is one-third of the world's share. We planned a study to identify the prevalence of severe acute malnutrition (SAM) among children aged <5 years in a rural population of Northern India. Materials and Methods: A cross-sectional study was conducted at 2 blocks of District Meerut during 2012-2014. A total of 70 villages were identified and all children in the age group 6-60 months were approached through house-to-house visits...
April 2017: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/29282319/expression-of-an-active-g%C3%AE-s-mutant-in-skeletal-stem-cells-is-sufficient-and-necessary-for-fibrous-dysplasia-initiation-and-maintenance
#5
Xuefeng Zhao, Peng Deng, Ramiro Iglesias-Bartolome, Panomwat Amornphimoltham, Dana J Steffen, Yunyun Jin, Alfredo A Molinolo, Luis Fernandez de Castro, Diana Ovejero, Quan Yuan, Qianming Chen, Xianglong Han, Ding Bai, Susan S Taylor, Yingzi Yang, Michael T Collins, J Silvio Gutkind
Fibrous dysplasia (FD) is a disease caused by postzygotic activating mutations of GNAS (R201C and R201H) that encode the α-subunit of the Gs stimulatory protein. FD is characterized by the development of areas of abnormal fibroosseous tissue in the bones, resulting in skeletal deformities, fractures, and pain. Despite the well-defined genetic alterations underlying FD, whether GNAS activation is sufficient for FD initiation and the molecular and cellular consequences of GNAS mutations remains largely unresolved, and there are no currently available targeted therapeutic options for FD...
December 27, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29260543/3d-microstructured-azobenzene-containing-gelatin-as-photoactuable-cell-confining-system
#6
Fabrizio Andrea Pennacchio, Chiara Fedele, Selene De Martino, Silvia Cavalli, Raffaele Vecchione, Paolo A Netti
In materials science there is a considerable interest in the fabrication of highly engineered biomaterials that can interact with cells and control their shape. In particular, from the literature the role played by physical cell confinement in cellular structural organization and thus in the regulation of its functions has been well established. In this context, the addition of a dynamic feature to physically confining platforms aiming at reproducing in vitro the well-known dynamic interaction between cells and their microenvironment would be highly desirable...
December 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29242553/nuclear-lamin-a-c-harnesses-the-perinuclear-apical-actin-cables-to-protect-nuclear-morphology
#7
Jeong-Ki Kim, Arghavan Louhghalam, Geonhui Lee, Benjamin W Schafer, Denis Wirtz, Dong-Hwee Kim
The distinct spatial architecture of the apical actin cables (or actin cap) facilitates rapid biophysical signaling between extracellular mechanical stimuli and intracellular responses, including nuclear shaping, cytoskeletal remodeling, and the mechanotransduction of external forces into biochemical signals. These functions are abrogated in lamin A/C-deficient mouse embryonic fibroblasts that recapitulate the defective nuclear organization of laminopathies, featuring disruption of the actin cap. However, how nuclear lamin A/C mediates the ability of the actin cap to regulate nuclear morphology remains unclear...
December 14, 2017: Nature Communications
https://www.readbyqxmd.com/read/29219381/geiger-nuttall-law-for-nuclei-in-strong-electromagnetic-fields
#8
D S Delion, S A Ghinescu
We investigate the influence of a strong laser electromagnetic field on the α-decay rate by using the Hennenberger frame of reference. We introduce an adimensional parameter D=S_{0}/R_{0}, where R_{0} is the geometrical nuclear radius and S_{0}∼sqrt[I]/ω^{2} is a length parameter depending on the laser intensity I and frequency ω. We show that the barrier penetrability has a strong increase for intensities corresponding to D>D_{crit}=1, due to the fact that the resulting Coulomb potential becomes strongly anisotropic even for spherical nuclei...
November 17, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29210647/%C3%AE-mangostin-a-natural-xanthone-induces-apoptosis-and-ros-accumulation-in-human-rheumatoid-fibroblast-like-synoviocyte-mh7a-cells
#9
J Zhang, Q Chen, S Wang, T Li, Z Xiao, W Lan, G Huang, X Cai
Rheumatoid arthritis (RA) is a chronic autoimmune disease with the characteristics of progressive joint destruction, deformity and disability. The present study was designed to investigate the effects of a set of natural products, including α-mangostin on MH7A cells, human rheumatoid fibroblast-like synoviocytes and to explore the underlying mechanisms. MH7A cells were treated with natural products to evaluate the effects on MH7A cell viability and α-mangostin was proven to be the most effective one to inhibit cell viability...
December 5, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/29207257/forcing-entry-into-the-nucleus
#10
Alexis Lomakin, Guilherme Nader, Matthieu Piel
Nuclear pore complexes tightly regulate nucleo-cytoplasmic transport, controlling the nuclear concentration of several transcription factors. In a recent issue of Cell, Elosegui-Artola et al. (2017) show that nuclear deformation modulates the nuclear entry rates of YAP/TAZ via nuclear pore stretching, clarifying how forces affect gene transcription.
December 4, 2017: Developmental Cell
https://www.readbyqxmd.com/read/29156519/in-vivo-assessment-of-the-osteo-protective-effects-of-eugenol-in-alveolar-bone-tissues
#11
Hatem M Abuohashish, Dina A Khairy, Maha M Abdelsalam, Ahmed Alsayyah, Mohammed M Ahmed, Salim S Al-Rejaie
Estrogen deficiency following menopausal provokes alveolar bone loss, remodeling and inflammation. Eugenol is a phenolic compound with wide dental applications and anti-inflammatory properties. In the present study, the potential protective role of eugenol against alveolar bone deformities was investigated in an ovariectomized (OVX) rodent model. Two doses of eugenol (2.5 and 5 mg/kg/d) were administered to OVX animals for 12 weeks. In Serum, markers of bone metabolism and pro-inflammatory cytokines were estimated using ELISA...
November 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29150809/molecular-properties-of-metal-difluorides-and-their-interactions-with-co2-and-h2o-molecules-a-dft-investigation
#12
Agnes Lincy Arokiyanathan, Senthilkumar Lakshmipathi
A computational study of metal difluorides (MF2; M = Ca to Zn) and their interactions with carbon dioxide and water molecules was performed. The structural parameter values obtained and the results of AIM analysis and energy decomposition analysis indicated that the Ca-F bond is weaker and less ionic than the bonds in the transition metal difluorides. A deformation density plot revealed the stablizing influence of the Jahn-Teller effect in nonlinear MF2 molecules (e.g., where M= Sc, Ti, Cr). An anaysis of the metal K-edge peaks of the difluorides showed that shifts in the edge energy were due to the combined effects of the ionicity, effective nuclear charge, and the spin state of the metal...
November 18, 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/29126229/osteoblast-amp-activated-protein-kinase-regulates-postnatal-skeletal-development-in-male-mice
#13
Ippei Kanazawa, Ayumu Takeno, Ken-Ichiro Tanaka, Masakazu Notsu, Toshitsugu Sugimoto
Studies have shown that AMP-activated protein kinase (AMPK), a crucial regulator of energy homeostasis, plays important roles in osteoblast differentiation and mineralization. However, little is known about in vivo roles of osteoblastic AMPK in bone development. Thus, to investigate in vivo roles of osteoblast AMPK, we conditionally inactivated Ampk in osterix (Osx)-expressing cells by crossing Osx-Cre mice with floxed AMPKα1 to generate mice lacking AMPKα1 in osteoblasts (Ampk-/- mice). Compared with wild-type and Ampk+/- mice, Ampk-/- mice displayed retardation of postnatal bone development, although bone deformity was not observed at birth...
November 3, 2017: Endocrinology
https://www.readbyqxmd.com/read/29119545/mechanisms-of-nuclear-pore-complex-assembly-two-different-ways-of-building-one-molecular-machine
#14
REVIEW
Shotaro Otsuka, Jan Ellenberg
The nuclear pore complex (NPC) mediates all macromolecular transport across the nuclear envelope. In higher eukaryotes that have an open mitosis, NPCs assemble at two points in the cell-cycle: during nuclear assembly in late mitosis and during nuclear growth in interphase. How the NPC, the largest non-polymeric protein complex in eukaryotic cells, self-assembles inside cells remained unclear. Recent studies have started to uncover the assembly process, and evidence has been accumulating that postmitotic and interphase NPC assembly use fundamentally different mechanisms; the duration, structural intermediates, and regulation by molecular players are different and different types of membrane deformation are involved...
November 8, 2017: FEBS Letters
https://www.readbyqxmd.com/read/29119279/mechanical-stress-promotes-matrix-synthesis-of-mandibular-condylar-cartilage-via-the-rkip-erk-pathway
#15
Lian Sun, Jing Zhao, Hua Wang, Yongchu Pan, Lin Wang, Wei-Bing Zhang
Mandibular hypoplasia is a common jaw deformity that affects breathing, occlusal function and facial aesthetics. Stimulating mandibular condylar growing with functional appliances is an ordinary but controversial treatment method in orthodontics. Therefore, it is vital to clarify how functional appliances affect condylar growing. Raf-1 kinase inhibitor protein (RKIP), as an endogenous inhibitory molecule of the ERK signaling, is postulated to involve in stress-induced response to articular cartilage. This study was to reveal the role of RKIP in regulating cartilage matrix synthesis with functional appliance treatment...
December 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29112878/reproductive-and-endocrine-disrupting-toxicity-of-microcystis-aeruginosa-in-female-zebrafish
#16
Guangfu Liu, Mingjing Ke, Xiaoji Fan, Meng Zhang, Youchao Zhu, Tao Lu, Liwei Sun, Haifeng Qian
Microcystis aeruginosa, a primary species in cyanobacterial blooms, is ubiquitously distributed in water. Microcystins (MCs) purified from M. aeruginosa can exert reproductive toxicity in fish. However, the effects of M. aeruginosa at environmentally relevant levels on the reproductive and endocrine systems of zebrafish are still unknown. The present study investigated the reproductive and endocrine-disrupting toxicity of M. aeruginosa on female zebrafish (Danio rerio) by short-term exposure (96 h). After exposure, marked histological lesions in the liver or gonads, such as nuclear pyknosis and deformation, were observed, and the fertilization rate and hatchability of eggs spawned from treated females were both significantly lower than they were in females in the control group, suggesting the possibility of transgenerational effects of M...
February 2018: Chemosphere
https://www.readbyqxmd.com/read/29106056/microenvironmental-stiffness-of-3d-polymeric-structures-to-study-invasive-rates-of-cancer-cells
#17
Enrico Domenico Lemma, Barbara Spagnolo, Francesco Rizzi, Stefania Corvaglia, Marco Pisanello, Massimo De Vittorio, Ferruccio Pisanello
Cells are highly dynamic elements, continuously interacting with the extracellular environment. Mechanical forces sensed and applied by cells are responsible for cellular adhesion, motility, and deformation, and are heavily involved in determining cancer spreading and metastasis formation. Cell/extracellular matrix interactions are commonly analyzed with the use of hydrogels and 3D microfabricated scaffolds. However, currently available techniques have a limited control over the stiffness of microscaffolds and do not allow for separating environmental properties from biological processes in driving cell mechanical behavior, including nuclear deformability and cell invasiveness...
November 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29094303/high-thickness-histological-sections-as-alternative-to-study-the-three-dimensional-microscopic-human-sub-cortical-neuroanatomy
#18
Eduardo Joaquim Lopes Alho, Ana Tereza Di Lorenzo Alho, Lea Grinberg, Edson Amaro, Gláucia Aparecida Bento Dos Santos, Rafael Emídio da Silva, Ricardo Caires Neves, Maryana Alegro, Daniel Boari Coelho, Manoel Jacobsen Teixeira, Erich Talamoni Fonoff, Helmut Heinsen
Stereotaxy is based on the precise image-guided spatial localization of targets within the human brain. Even with the recent advances in MRI technology, histological examination renders different (and complementary) information of the nervous tissue. Although several maps have been selected as a basis for correlating imaging results with the anatomical locations of sub-cortical structures, technical limitations interfere in a point-to-point correlation between imaging and anatomy due to the lack of precise correction for post-mortem tissue deformations caused by tissue fixation and processing...
November 1, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28962187/the-therapeutic-effect-of-zerumbone-on-chronic-gastritis-via-antioxidant-mechanisms
#19
Liqing Li, Liang Kong, Hongquan Song
Effects of zerumbone on chronic gastritis remain unclear. The purpose of this study was to investigate the mechanism of the protective effect of zerumbone on the treatment of chronic gastritis in rats. The animal models of chronic gastritis in rats were established, and the surface damage of gastric mucosa was observed by gross anatomy; the changes of gastric mucosal tissue and surface morphology were observed by pathological sections of gastric mucosal tissues; the expressions of heme oxygenase-1 (HO-1) and nuclear factor E2-related factor 2 (Nrf-2) proteins of gastric mucosal tissues in each group were detected by western blot analysis; the activities of superoxide dismutase (SOD) and catalase (CAT) as well as the contents of reduced glutathione (GSH) and malondialdehyde (MDA) in gastric mucosal tissues were detected by kits...
September 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28919399/a-numerical-model-suggests-the-interplay-between-nuclear-plasticity-and-stiffness-during-a-perfusion-assay
#20
Solenne Deveraux, Rachele Allena, Denis Aubry
Cell deformability is a necessary condition for a cell to be able to migrate, an ability that is vital both for healthy and diseased organisms. The nucleus being the largest and stiffest organelle, it often is a barrier to cell migration. It is thus essential to characterize its mechanical behaviour. First, we numerically investigate the visco-elasto-plastic properties of the isolated nucleus during a compression test. This simulation highlights the impact of the mechanical behaviour of the nuclear lamina and the nucleoplasm on the overall plasticity...
December 21, 2017: Journal of Theoretical Biology
keyword
keyword
38754
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"