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https://www.readbyqxmd.com/read/29458137/bisphenol-a-alters-oocyte-maturation-by-prematurely-closing-gap-junctions-in-the-cumulus-cell-oocyte-complex
#1
Deyanira Guadalupe Acuña-Hernández, Laura Arreola-Mendoza, Ramsés Santacruz-Márquez, Sihomara Patricia García-Zepeda, Lyda Yuliana Parra-Forero, Jesús Alberto Olivares-Reyes, Isabel Hernández-Ochoa
In ovarian follicles, cumulus cells communicate with the oocyte through gap junction intercellular communication (GJIC), to nurture the oocyte and control its meiosis arrest and division. Bisphenol A (BPA) is a monomer found in polycarbonate-made containers that can induce functional alterations, including impaired oocyte meiotic division and reduced molecule transfer in GJIC. However, how BPA alters oocyte meiotic division is unclear. We investigated whether BPA effects on oocyte meiotic division were correlated with reduced transfer in GJIC...
February 16, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29457161/a-self-supported-amorphous-ni-p-alloy-on-a-cuo-nanowire-array-an-efficient-3d-electrode-catalyst-for-water-splitting-in-alkaline-media
#2
Bing Chang, Shuai Hao, Zhixiang Ye, Yingchun Yang
Energy-efficient electrochemical water splitting is one important way to produce hydrogen fuel but still faces many challenges. In this communication, we report that an amorphous Ni-P alloy shell electrodeposited on a CuO nanowire array supported on copper foam (CuO@Ni-P NA/CF) can be used for efficient water splitting in alkaline media. As a 3D catalytic electrode, it exhibits excellent activity both for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) with overpotentials of 106 mV for HER and 275 mV for OER to achieve a current density of 30 mA cm-2 in 1...
February 19, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29456985/evaluation-of-mir-21-inhibition-and-its-impact-on-cancer-susceptibility-candidate-2-long-noncoding-rna-in-colorectal-cancer-cell-line
#3
Miganoosh Simonian, Mohammadreza Sharifi, Reza Nedaeinia, Meysam Mosallaie, Sharifeh Khosravi, Amir Avan, Majid Ghayour-Mobarhan, Hadi Bagheri, Rasoul Salehi
Background: Both microRNAs (miRNAs) and long noncoding RNAs (lncRNAs) have been shown to have a critical role in the regulation of cellular processes such as cell growth and apoptosis, as well as cancer progression and metastasis. lncRNAs are aberrantly expressed in many diseases including cancer. Although it is well known that miRNAs can target a large number of protein-coding genes, little is known whether miRNAs can also target lncRNAs. In the present study, we determine whether miR-21 can regulate lncRNA cancer susceptibility candidate 2 (CASC2) in colorectal cancer...
2018: Advanced Biomedical Research
https://www.readbyqxmd.com/read/29456837/synaptic-neuron-astrocyte-communication-is-supported-by-an-order-of-magnitude-analysis-of-inositol-tris-phosphate-diffusion-at-the-nanoscale-in-a-model-of-peri-synaptic-astrocyte-projection
#4
Pavel Montes de Oca Balderas, Horacio Montes de Oca Balderas
Background: Astrocytes were conceived for decades only as supporting cells of the brain. However, the observation of Ca2+ waves in astrocyte synctitia, their neurotransmitter receptor expression and gliotransmitter secretion suggested a role in information handling, conception that has some controversies. Synaptic Neuron-Astrocyte metabotropic communication mediated by Inositol tris-phosphate (SN-AmcIP3) is supported by different reports. However, some models contradict this idea and Ca2+ stores are 1000 ± 325 nm apart from the Postsynaptic Density in the Perisynaptic Astrocyte Projections (PAP's), suggesting that SN-AmcIP3 is extrasynaptic...
2018: BMC Biophysics
https://www.readbyqxmd.com/read/29456671/current-perspectives-of-sa-4-1bbl-in-immune-modulation-during-cancer
#5
Shu-Ni Zhou, Rui-Zhi Ran, Li-Li Tan, Hao Guo
A recombinant co-stimulatory molecule capable of inducing multiple effects on varied immune cells when present in its soluble active form is termed as SA-4-1BBL. It has been reported to influence innate, adaptive, and regulatory immune cells. Recent studies confirmed its engagement with receptor, 4-1BB leading to collection of interleukin-2 (IL-2) that in turn overcomes Treg suppression. Further, a vast number of pre-clinical studies reported its therapeutic efficacy in the form of adjuvant subunit in cancer vaccines...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29455645/pyruvate-kinase-m2-fuels-multiple-aspects-of-cancer-cells-from-cellular-metabolism-transcriptional-regulation-to-extracellular-signaling
#6
REVIEW
Ming-Chuan Hsu, Wen-Chun Hung
Originally identified as a metabolic enzyme that catalyzes the transfer of a phosphate group from phosphoenolpyruvate (PEP) to ADP in the glycolytic pathway, pyruvate kinase M2-type (PKM2) has been shown to exhibit novel biological activities in the nucleus and outside the cells. Although cell-based studies reveal new non-canonical functions of PKM2 in gene transcription, epigenetic modulation and cell cycle progression, the importance of these non-canonical functions in PKM2-mediated tumorigenesis is still under debate because studies in genetically modified mice do not consistently echo the findings observed in cultured cancer cells...
February 19, 2018: Molecular Cancer
https://www.readbyqxmd.com/read/29455449/role-of-exosomes-derived-from-mir-133b-modified-mscs-in-an-experimental-rat-model-of-intracerebral-hemorrhage
#7
Haitao Shen, Xiyang Yao, Haiying Li, Xiang Li, Tiejun Zhang, Qing Sun, Chengyuan Ji, Gang Chen
Intracerebral hemorrhage (ICH) has poor outcomes due to high mortality and morbidity, but until now, the effective treatments remain limited. MicroRNAs (miRNAs) are vital regulators of gene expression and demonstrated to be linked to the pathogenesis of various central nervous system (CNS) diseases. Exosomes are considered as cell-to-cell communication vectors and secreted largely by mesenchymal stromal cells (MSCs). The present study investigated the role of miR-133b delivered by exosomes secreted from MSCs to brain tissues in rats after ICH...
February 17, 2018: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29454932/preserved-canonicality-of-the-bold-hemodynamic-response-reflects-healthy-cognition-insights-into-the-healthy-brain-through-the-window-of-multiple-sclerosis
#8
REVIEW
Monroe P Turner, Nicholas A Hubbard, Dinesh K Sivakolundu, Lyndahl M Himes, Joanna L Hutchison, John Hart, Jeffrey Spence, Elliot Frohman, Teresa Frohman, Darin Okuda, Bart Rypma
The hemodynamic response function (HRF), a model of brain blood-flow changes in response to neural activity, reflects communication between neurons and the vasculature that supplies these neurons in part by means of glial cell intermediaries (e.g., astrocytes). Intact neural-vascular communication might play a central role in optimal cognitive performance. This hypothesis can be tested by comparing healthy individuals to those with known white-matter damage and impaired performance, as seen in Multiple Sclerosis (MS)...
February 15, 2018: NeuroImage
https://www.readbyqxmd.com/read/29454273/mechanosensitive-adhesion-complexes-in-epithelial-architecture-and-cancer-onset
#9
REVIEW
Minerva Bosch-Fortea, Fernando Martín-Belmonte
Mechanical signals from the extracellular space are paramount to coordinate tissue morphogenesis and homeostasis. Although there is a wide variety of cellular mechanisms involved in transducing extracellular forces, recent literature emphasizes the central role of two main adhesion complexes in epithelial mechanosensitive processes: focal adhesions and adherens junctions. These biomechanical sensors can decode physical signals such as matrix stiffness or intercellular tension into a wide range of coordinated cellular responses, which can impact cell differentiation, migration, and proliferation...
February 14, 2018: Current Opinion in Cell Biology
https://www.readbyqxmd.com/read/29454089/genome-wide-gene-expression-analysis-of-45-days-pregnant-fetal-cotyledons-vis-a-vis-non-pregnant-caruncles-in-buffalo-bubalus-bubalis
#10
Masoud Lotfan, Syed Azmal Ali, Munnalal Yadav, Suman Chuadhary, Manoj Kumar Jena, Sudarshan Kumar, Ashok Kumar Mohanty
The crosstalk between fetus and mother starts with the onset of placental attachment to the uterus. The cotyledons and caruncles are the two anatomically distinct structures that play a crucial role in this physiological communication. Using Agilent Gene Chip Genome microarray, we measured the expression profile of pregnancy cotyledons in comparison to caruncular reminiscence of the uteri in non-pregnant buffalo (Bubalus bubalis) for the detection of the early post-pregnancy rapid changes in cellular expression of mRNA transcripts...
February 14, 2018: Gene
https://www.readbyqxmd.com/read/29453454/a-microvascularized-tumor-mimetic-platform-for-assessing-anti-cancer-drug-efficacy
#11
Shantanu Pradhan, Ashley M Smith, Charles J Garson, Iman Hassani, Wen J Seeto, Kapil Pant, Robert D Arnold, Balabhaskar Prabhakarpandian, Elizabeth A Lipke
Assessment of anti-cancer drug efficacy in in vitro three-dimensional (3D) bioengineered cancer models provides important contextual and relevant information towards pre-clinical translation of potential drug candidates. However, currently established models fail to sufficiently recapitulate complex tumor heterogeneity. Here we present a chip-based tumor-mimetic platform incorporating a 3D in vitro breast cancer model with a tumor-mimetic microvascular network, replicating the pathophysiological architecture of native vascularized breast tumors...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453447/embryonic-stem-cell-transplants-as-a-therapeutic-strategy-in-a-rodent-model-of-autism
#12
Jennifer J Donegan, Angela M Boley, Daniel J Lodge
Autism is a neurodevelopmental disorder characterized by disruptions in three core behavioral domains: deficits in social interaction, impairments in communication, and repetitive and stereotyped patterns of behavior or thought. There are currently no drugs available for the treatment of the core symptoms of ASD and drugs that target comorbid symptoms often have serious adverse side effects, suggesting an urgent need for new therapeutic strategies. The neurobiology of autism is complex, but converging evidence suggests that ASD involves disruptions in the inhibitory GABAergic neurotransmitter system...
February 7, 2018: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29452585/beta-2-adrenergic-receptors-increase-treg-cell-suppression-in-an-ova-induced-allergic-asthma-mouse-model-when-mice-are-moderate-aerobically-exercised
#13
Kari J Dugger, Taylor Chrisman, Sarah L Sayner, Parker Chastain, Kacie Watson, Robert Estes
BACKGROUND: The potency of T regulatory (TREG) cells to inhibit T helper (Th)-driven immune cell responses has been linked to increased intracellular cyclic-AMP (cAMP) levels of TREG cells. In an ovalbumin (OVA)-driven allergic asthma mouse model, moderate aerobic exercise increases TREG cell function in a contact-dependent manner that leads to a significant reduction in chronic inflammation and restoration of lung function. However, the mechanism, whereby exercise increases TREG function, remains unknown and was the focus of these investigations...
February 17, 2018: BMC Immunology
https://www.readbyqxmd.com/read/29451858/cerebrospinal-fluid-micrornas-as-diagnostic-biomarkers-in-brain-tumors
#14
REVIEW
Alena Kopkova, Jiri Sana, Pavel Fadrus, Ondrej Slaby
Cerebrospinal fluid (CSF) is a body fluid that has many important functions and is in direct contact with the extracellular environment of the central nervous system (CNS). CSF serves as both the communication channel allowing the distribution of various substances among the CNS cells and the storage facility for the waste products these cells release. For these reasons, CSF is a potential source of diagnostic biomarkers of many CNS diseases, including brain tumors. Recent studies have revealed that CSF also contains circulating microRNAs (miRNAs), short non-coding RNAs that have been described as biomarkers in many cancers...
February 16, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29451717/modeling-of-cytometry-data-in-logarithmic-space-when-is-a-bimodal-distribution-not-bimodal
#15
Amir Erez, Robert Vogel, Andrew Mugler, Andrew Belmonte, Grégoire Altan-Bonnet
Recent efforts in systems immunology lead researchers to build quantitative models of cell activation and differentiation. One goal is to account for the distributions of proteins from single-cell measurements by flow cytometry or mass cytometry as readout of biological regulation. In that context, large cell-to-cell variability is often observed in biological quantities. We show here that these readouts, viewed in logarithmic scale may result in two easily-distinguishable modes, while the underlying distribution (in linear scale) is unimodal...
February 16, 2018: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/29451670/-it-s-a-traumatic-illness-traumatic-to-witness-a-qualitative-study-of-the-experiences-of-bereaved-family-caregivers-of-patients-with-cutaneous-t-cell-lymphoma
#16
D Orlowska, L E Selman, T Beynon, E Radcliffe, S Whittaker, F Child, R Harding
BACKGROUND: Cutaneous T-cell lymphomas (CTCL) are rare cancers which can be difficult to diagnose, are incurable and adversely affect quality of life, particularly in advanced disease. Families often provide care, but little is known about their experiences or needs while caring for their relative with advanced disease or in bereavement. OBJECTIVES: To explore the experiences of bereaved family caregivers of patients with CTCL. METHODS: Single semi-structured qualitative interviews were conducted with bereaved family caregivers of patients with CTCL recruited via a supra-regional CTCL clinic...
February 16, 2018: British Journal of Dermatology
https://www.readbyqxmd.com/read/29451205/optical-read-out-and-modulation-of-peripheral-nerve-activity
#17
REVIEW
Arjun K Fontaine, Hans E Anderson, John H Caldwell, Richard F Weir
Numerous clinical and research applications necessitate the ability to interface with peripheral nerve fibers to read and control relevant neural pathways. Visceral organ modulation and rehabilitative prosthesis are two areas which could benefit greatly from improved neural interfacing approaches. Therapeutic neural interfacing, or 'bioelectronic medicine', has potential to affect a broad range of disorders given that all the major organs of the viscera are neurally innervated. However, a better understanding of the neural pathways that underlie function and a means to precisely interface with these fibers are required...
January 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/29449195/neutrophil-microvesicles-from-healthy-control-and-rheumatoid-arthritis-patients-prevent-the-inflammatory-activation-of-macrophages
#18
Hefin I Rhys, Francesco Dell'Accio, Costantino Pitzalis, Adrian Moore, Lucy V Norling, Mauro Perretti
Microvesicles (MVs) are emerging as a novel means to enact cell-to-cell communication in inflammation. Here, we aimed to ascertain the ability of neutrophil-derived MVs to modulate target cell behaviour, the focus being the macrophage. MVs were generated in response to tumour necrosis factor-α, from healthy control neutrophils or those from rheumatoid arthritis patients. MVs were used to stimulate human monocyte-derived macrophages in vitro, or administered intra-articularly in the K/BxN mouse model of arthritis...
February 7, 2018: EBioMedicine
https://www.readbyqxmd.com/read/29448735/fabrication-of-up-conversion-phosphor-films-on-flexible-substrates-using-a-nanostructured-organo-silicon
#19
Young-Sun Jeon, Tae-Un Kim, Seon-Hoon Kim, Young-Hwan Lee, Pil-Son Choi, Kyu-Seog Hwang
Up-conversion phosphors have attracted considerable attention because of their applications in solid-state lasers, optical communications, flat-panel displays, photovoltaic cells, and biological labels. Among them, NaYF4 is reported as one of the most efficient hosts for infrared to visible photon up-conversion of Yb3+ and Er3+ ions. However, a low-temperature method is required for industrial scale fabrication of photonic and optoelectronic devices on flexible organic substrates. In this study, hexagonal β-NaYF4: 3 mol% Yb3+, 3 mol% Er3+ up-conversion phosphor using Ca2+ was prepared by chemical solution method...
March 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29448174/extracellular-vesicles-new-players-in-cell-cell-communication-in-aquatic-environments
#20
REVIEW
Daniella Schatz, Assaf Vardi
Communication between microorganisms in aquatic environments can influence ecosystem function and determine the structure and composition of microbial populations. This microbial cross talk can be mediated by excretion of specialized metabolites or extracellular vesicles (EVs). Recently it has become apparent that cells across all domains of life produce EVs that may convey specific targeted signals that can modulate cell fate, morphology and susceptibility to viruses. The vast majority of knowledge about EVs is derived from studies of mammalian tissues, parasitic host-pathogen interactions and model bacterial systems...
February 12, 2018: Current Opinion in Microbiology
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