keyword
MENU ▼
Read by QxMD icon Read
search

Unknown unknowns

keyword
https://www.readbyqxmd.com/read/29775968/in-silico-structure-prediction-and-inhibition-mechanism-studies-of-athda14-as-revealed-by-homology-modeling-docking-molecular-dynamics-simulation
#1
Ming-Lang Zhao, Wang Wang, Hu Nie, Sha-Sha Cao, Lin-Fang Du
Histone deacetylases (HDACs) play a significant role in the epigenetic mechanism by catalyzing deacetylation of lysine on histone in both animals and plants. HDACs involved in growth, development and response to stresses in plants. Arabidopsis thaliana histone deacetylase 14 (AtHDA14) is found to localize in the mitochondria and chloroplasts, and it involved in photosynthesis and melatonin biosynthesis. However, its mechanism of action was still unknowns so far. Therefore, in this study, we constructed AtHDA14 protein model using homology modeling method, validated using PROCHECK and presented using Ramachandran plots...
May 6, 2018: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/29775925/exposure-to-tris-1-3-dichloro-2-propyl-phosphate-for-two-generations-decreases-fecundity-of-zebrafish-at-environmentally-relevant-concentrations
#2
Yongkang Zhang, Meng Li, Shuying Li, Qiangwei Wang, Guonian Zhu, Guanyong Su, Robert J Letcher, Chunsheng Liu
Previous studies reported that exposure to environmentally relevant concentrations of TDCIPP significantly decreased the number of cumulative eggs in zebrafish, but effects on the quantity of eggs and sperms remained unknown. Therefore, in this study, effects of TDCIPP on yolk diameter, surface morphology of eggs, sperm density and total motility were evaluated. First generation (F0) zebrafish larvae (Danio rerio) were exposed to 0, 50, 500 or 5000 ng/L tris(1,3-dichloro-2-propyl) phosphate (TDCIPP) from 14 days post fertilization (dpf) to 120 dpf...
May 14, 2018: Aquatic Toxicology
https://www.readbyqxmd.com/read/29775877/communication-and-social-interaction-anxiety-enhance-interleukin-1-beta-and-cortisol-reactivity-during-high-stakes-public-speaking
#3
Brandon J Auer, Jessica L Calvi, Nicolas M Jordan, David Schrader, Jennifer Byrd-Craven
BACKGROUND: Worry or fear related to speaking in front of others, or more broadly, communicating and interacting with others, is common. At elevated levels, however, it may contribute to heightened stress reactivity during acute speaking challenges. The purpose of this study was to examine multi-system physiological stress reactivity in the context of high-stakes public speaking while considering the impact of hypothesized individual difference risk factors. METHODS: University student participants (n = 95) delivering speeches as a heavily-weighted component of their final grade had saliva samples collected immediately prior to speaking, immediately after, and 20 min after speech completion...
May 8, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29775826/atypical-virulence-in-a-type-iii-toxoplasma-gondii-strain-isolated-in-japan
#4
Yuji Taniguchi, Cornelia Appiah-Kwarteng, Mami Murakami, Junpei Fukumoto, Kisaburo Nagamune, Tomohide Matsuo, Tatsunori Masatani, Hirotaka Kanuka, Tokio Hoshina, Katsuya Kitoh, Yasuhiro Takashima
The virulence of a type III Toxoplasma gondii strain isolated in Japan and designated here as TgCatJpGi1/TaJ was examined in mice and micro minipigs in this study. Despite its type III genotype, oral or intraperitoneal inoculation of cysts from it resulted in severe virulence in C57BL/6J and BALB/c mice. In contrast, mice inoculated with a high dose of TgCatJpGi1/TaJ tachyzoites showed no obvious clinical signs of infection, and all of them survived for >21 days post-inoculation. Furthermore, no clinical signs of infection were seen when micro minipigs were inoculated with 900 cysts...
May 15, 2018: Parasitology International
https://www.readbyqxmd.com/read/29775823/plasticity-of-population-coding-in-primary-sensory-cortex
#5
REVIEW
Amy M LeMessurier, Daniel E Feldman
That experience shapes sensory tuning in primary sensory cortex is well understood. But effective neural population codes depend on more than just sensory tuning. Recent population imaging and recording studies have characterized population codes in sensory cortex, and tracked how they change with sensory manipulations and training on perceptual learning tasks. These studies confirm sensory tuning changes, but also reveal other features of plasticity, including sensory gain modulation, restructuring of firing correlations, and differential routing of information to output pathways...
May 15, 2018: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/29775800/insertion-and-presence-of-fine-wire-intramuscular-electrodes-to-the-lumbar-paraspinal-muscles-do-not-affect-muscle-performance-and-activation-during-high-exertion-spinal-extension-activities
#6
Szu-Ping Lee, Jo Armour Smith, Matthew Kimber, Kelsey Houk
BACKGROUND: Low back pain (LBP) is commonly associated with paraspinal muscle dysfunctions. A method to study deep lumbar paraspinal (i.e. multifidus) muscle function and neuromuscular activation pattern is intramuscular electromyography (EMG). Previous studies have shown that the procedure does not significantly impact muscle function during activities involving low-level muscle contractions. However, it is currently unknown how muscular function and activation are affected during high-exertion contractions...
May 15, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29775783/ocimum-basilicum-mirnome-revisited-a-cross-kingdom-approach
#7
Maulikkumar Patel, Shanaya Patel, Naman Mangukia, Saumya Patel, Archana Mankad, Himanshu Pandya, Rakesh Rawal
O. basilicum is medicinally important herb having inevitable role in human health. However, the mechanism of action is largely unknown. Present study aims to understand the mechanism of regulation of key human target genes that could plausibly modulated by O. basilicum miRNAs in cross kingdom manner using computational and system biology approach. O. basilicum miRNA sequences were retrieved and their corresponding human target genes were identified using psRNA target and interaction analysis of hub nodes. Six O...
May 15, 2018: Genomics
https://www.readbyqxmd.com/read/29775761/the-bone-anabolic-effects-of-irisin-are-through-preferential-stimulation-of-aerobic-glycolysis
#8
Dingdong Zhang, ChuHyun Bae, Junghak Lee, Jiho Lee, Zeyu Jin, Myeongmo Kang, Young Suk Cho, Jeong-Han Kim, Weontae Lee, Sung-Kil Lim
Irisin, a recently identified hormone secreted by skeletal muscle in response to exercise, exhibits anabolic effects on the skeleton primarily through the stimulation of bone formation. However, the mechanism underlying the irisin-stimulated anabolic response remains largely unknown. To uncover the underlying mechanism, we biosynthesized recombinant irisin (r-irisin) using an Escherichia coli expression system and used it to treat several osteoblast cell types. Our synthesized r-irisin could promote proliferation and differentiation of osteoblasts as evidenced by enhanced expression of osteoblast-specific transcriptional factors, including Runt-related transcription factor-2 (Runx2), Oster (Osx), as well as early osteoblastic differentiation markers such as alkaline phosphatase (Alp) and collagen type I alpha 1 (Col1a1)...
May 15, 2018: Bone
https://www.readbyqxmd.com/read/29775759/-938-rhrk-941-is-responsible-for-ubiquitin-specific-protease-48-nuclear-translocation-which-can-stabilize-nf-%C3%AE%C2%BAb-p65-in-the-nucleus
#9
Ying-Li Liu, Jing Yan, Jie Zheng, Qing-Bao Tian
The transcription factor NF-κB is a key regulator of cellular processes. A mechanism that contributes to timely termination of NF-κB activity is UPS-dependent degradation of p65 in the nucleus or on chromatin. The ubiquitin-specific protease that takes part in this process and its molecular mechanisms are shown in previous study, but which structural feature of USP48 was responsible for these effects is unknown. Here, we show that maybe the stability of NF-κB is controlled by proteasome-mediated degradation and ubiquitin-specific protease 48 (USP48), also known as synaptic ubiquitin-specific protease (synUSP) or USP31, can enhance NF-κB stability through proteasome-dependent regulation in the nucleus...
May 15, 2018: Gene
https://www.readbyqxmd.com/read/29775728/opioid-free-anaesthesia-why-and-how-a-contextual-analysis
#10
REVIEW
Patrice Forget
If the use of natural opiates, such as opium, is more than millennial, the history of synthetic opioids begins after 1950, with the development of the so-called 'modern' anaesthetic techniques. In 1962, in Belgium, the use of fentanyl, the first synthetic opioid for use in anaesthesia, is described. Subsequently, the use of opioids at high doses during surgery became common. However, over the last twenty years, many studies have questioned this practice, highlighting the many unknowns as the side effects of these molecules...
May 15, 2018: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/29775703/ultrastructural-characterization-of-corticotropin-releasing-factor-and-neuropeptide-y-in-the-rat-locus-coeruleus-anatomical-evidence-for-putative-interactions
#11
Catherine C Theisen, Beverly A S Reyes, E L Sabban, Elisabeth J Van Bockstaele
As a neurochemical mediator of stress resilience, NPY has been shown to oppose excitatory effects of the pro-stress neuropeptide corticotropin-releasing factor (CRF). Previous studies have described the anatomical organization of NPY and CRF in the central nucleus of the amygdala, which sends CRF projections to the locus coeruleus (LC), activating LC norepinephrine release. However, the cellular substrates for interactions between NPY and CRF in the LC remain unknown. In this study, we investigated these anatomical substrates in the male rat LC, using immunocytochemistry, confocal microscopy, and immunoelectron microscopy to detect NPY and CRF, as well as CRF and Y1 or Y2 receptors (Y1R or Y2R)...
May 15, 2018: Neuroscience
https://www.readbyqxmd.com/read/29775649/expression-and-function-of-tlr4-induced-b1r-bradykinin-receptor-on-cardiac-fibroblasts
#12
Claudia Muñoz-Rodríguez, Samuel Fernández, José Miguel Osorio, Francisco Olivares, Renatto Anfossi, Samir Bolivar, Claudio Humeres, Pía Boza, Raúl Vivar, Viviana Pardo-Jimenez, Karen E Hemmings, Neil A Turner, Guillermo Díaz-Araya
Cardiac fibroblasts (CF) are key cells for maintaining extracellular matrix (ECM) protein homeostasis in the heart, and for cardiac repair through CF-to-cardiac myofibroblast (CMF) differentiation. Additionally, CF play an important role in the inflammatory process after cardiac injury, and they express Toll like receptor 4 (TLR4), B1 and B2 bradykinin receptors (B1R and B2R) which are important in the inflammatory response. B1R and B2R are induced by proinflammatory cytokines and their activation by bradykinin (BK: B2R agonist) or des-arg-kallidin (DAKD: B1R agonist), induces NO and PGI2 production which is key for reducing collagen I levels...
May 15, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29775612/crystal-structure-of-wa352-provides-insight-into-cytoplasmic-male-sterility-in-rice
#13
Xiang Wang, Zeyuan Guan, Zhou Gong, Junjie Yan, Guangsheng Yang, Yao-Guang Liu, Ping Yin
Plant cytoplasmic male sterility (CMS) is an important phenomenon and is widely utilized in hybrid crop breeding. The Wild Abortive CMS (CMS-WA), a well-known CMS type, has been successfully applied in the commercial production of hybrid rice seeds for more than 40 years. The CMS-WA causal gene WA352 encodes a novel transmenbrane protein and the interacts with the mitochondrial copper chaperone COX11, triggering reactive oxygen species production and resulting in male sterility in CMS-WA lines. However, the structure of WA352 is currently unknown, and the structural mechanism whereby WA352 perturbs COX11 function to cause CMS remains largely unknown...
May 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29775609/kruppel-like-factor-4-klf-4-plays-a-crucial-role-in-simvastatin-svt-induced-differentiation-of-rabbit-articular-chondrocytes
#14
Seon-Mi Yu, Song Ja Kim
Simvastatin is a cholesterol-lowing reagent that is derived synthetically from the fermentation of Aspergillus terreus. Recently, SVT has been shown to possess a protective effect of chondrocytes. Kruppel-like factor 4 (KLF-4) is a zinc finger transcription factor that plays crucial roles during the development and maintenance of multiple organs. However, the roles of KLF-4 in chondrocytes have not been well unknown. Here, we investigated whether KLF-4 regulates SVT-caused differentiated phenotype of chondrocytes...
May 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29775497/inflammatory-cytokines-and-peripheral-mediators-in-the-pathophysiology-of-pruritus-in-cutaneous-t-cell-lymphoma
#15
REVIEW
Daniel J Lewis, Simo Huang, Madeleine Duvic
Cutaneous T-cell lymphoma (CTCL) includes a diverse group of neoplasms, including mycosis fungoides and Sézary syndrome. One of the earliest and most common symptoms of CTCL is pruritus, which affects up to 88% of patients. The severity of pruritus can range from mild to very debilitating, producing tremendous discomfort and a significant decrease in quality of life. Patients with advanced disease, in particular, may experience a more chronic, intractable pruritus. However, the underlying mechanism of pruritus in CTCL remains unknown...
May 18, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29775492/a-mitogen-activated-protein-kinase-phosphatase-influences-grain-size-and-weight-in-rice
#16
Ran Xu, Haiyue Yu, Junmin Wang, Penggen Duan, Baolan Zhang, Jing Li, Yu Li, Jinsong Xu, Jia Lyu, Na Li, Tuanyao Chai, Yunhai Li
Grain size and weight are directly associated with grain yield in crops. However, the molecular mechanisms that set final grain size and weight remain largely unknown. Here, we characterize two large grain mutants, large grain8-1 (large8-1) and large grain8-2 (large8-2). LARGE8 encodes the mitogen-activated protein kinase phosphatase1 (OsMKP1). Loss of function mutations in OsMKP1 results in large grains, while overexpression of OsMKP1 leads to small grains. OsMKP1 determines grain size by restricting cell proliferation in grain hulls...
May 18, 2018: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29775485/plasmodium-parasite-exploits-host-aquaporin-3-during-liver-stage-malaria-infection
#17
Dora Posfai, Kayla Sylvester, Anupama Reddy, Jack G Ganley, Johannes Wirth, Quinlan E Cullen, Tushar Dave, Nobutaka Kato, Sandeep S Dave, Emily R Derbyshire
Within the liver a single Plasmodium parasite transforms into thousands of blood-infective forms to cause malaria. Here, we use RNA-sequencing to identify host genes that are upregulated upon Plasmodium berghei infection of hepatocytes with the hypothesis that host pathways are hijacked to benefit parasite development. We found that expression of aquaporin-3 (AQP3), a water and glycerol channel, is significantly induced in Plasmodium-infected hepatocytes compared to uninfected cells. This aquaglyceroporin localizes to the parasitophorous vacuole membrane, the compartmental interface between the host and pathogen, with a temporal pattern that correlates with the parasite's expansion in the liver...
May 18, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29775417/targeting-histone-methyltransferase-enhancer-of-zeste-homolog-2-inhibits-renal-epithelial-mesenchymal-transition-and-attenuates-renal-fibrosis
#18
Xiaoxu Zhou, Chongxiang Xiong, Evelyn Tolbert, Ting C Zhao, George Bayliss, Shougang Zhuang
Enhancer of zeste homolog-2 (EZH2) is a methyltransferase that induces histone H3 lysine 27 trimethylation (H3K27me3) and functions as an oncogenic factor in many cancer types. Its role in renal epithelial-mesenchymal transition (EMT) remains unknown. In this study, we found that EZH2 and H3K27me3 were highly expressed in mouse kidney with unilateral ureteral obstruction and cultured mouse kidney proximal tubular (TKPT) cells undergoing EMT. Inhibition of EZH2 with 3-deazaneplanocin A (3-DZNeP) attenuated renal fibrosis, which was associated with preserving E-cadherin expression and inhibiting Vimentin up-regulation in the obstructed kidney...
May 18, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29775416/downregulation-of-the-%C3%AE-1-and-%C3%AE-1-subunit-of-sgc-in-arterial-smooth-muscle-cells-of-opscc-is-hpv-independent
#19
Y Korkmaz, H C Roggendorf, O G Siefer, J Seehawer, T Imhof, M Plomann, W Bloch, A Friebe, C U Huebbers
The nitric oxide (NO)-sensitive soluble guanylyl cyclase (sGC) is a heterodimeric enzyme with an α and β subunit. NO binds to heme of the β1 -subunit of sGC, activates the enzyme in the reduced heme iron state in vascular smooth muscle cells (VSMCs), and generates cGMP-inducing vasodilatation and suppression of VSMC proliferation. In the complex tumor milieu with higher levels of reactive oxygen species (ROS), sGC heme iron may become oxidized and insensitive to NO. To change sGC from an NO-insensitive to NO-sensitive state or NO-independent manner, protein expression of sGC in VSMC is required...
May 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29775413/human-cerebral-collateral-arteriole-function-in-normal-cognition-mild-cognitive-impairment-and-dementia-subjects
#20
Raymond Q Migrino, Seth Truran, Nina Karamanova, Geidy Serrano, Calvin Madrigal, Hannah A Davies, Jillian Madine, Peter Reaven, Thomas G Beach
Clinical and preclinical studies suggest a link between cardiovascular disease and dementia disorders but the role of collateral brain circulation in cognitive dysfunction remains unknown. We aim to test the hypothesis that leptomeningeal arteriole (LMA) function and response to metabolic stressors differ among dementia, mild cognitive impairment (MCI) and normal cognition (CN) subjects. Following rapid autopsy, LMA were isolated from CN (N=10), MCI (N=12) or dementia subjects (N=42, Alzheimer's disease [AD], vascular dementia [VaD], or Other Dementia) and endothelial and smooth muscle-dependent function were measured at baseline and following exposure to β-amyloid (Aβ42 2 μM), palmitic acid (PA 150 μM) or medin (5μM) and compared...
May 18, 2018: American Journal of Physiology. Heart and Circulatory Physiology
keyword
keyword
62323
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"