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https://www.readbyqxmd.com/read/29046057/bile-duct-ligature-in-young-rats-a-revisited-animal-model-for-biliary-atresia
#1
Matias Garrido, Camila Escobar, Constanza Zamora, Carolina Rejas, Juan Varas, Mario Párraga, Sebastian San Martin, Sandra Montedónico
Biliary atresia leads to cirrhosis in the vast majority of patients and constitutes the first cause of paediatric liver transplantation. Animal models allow us to understand the molecular basis and natural history of diseases. The aim of this study is to describe a surgically created animal model of biliary atresia with emphasis in long-term liver function. Forty-two 3-week-old Sprague-Dawley rats were randomly divided into two groups: bile duct ligature (BDL) and control. The animals were sacrificed on the 2nd, 4th, and 6th postoperative weeks...
September 13, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046051/characterization-of-the-skin-mucus-in-the-common-octopus-octopus-vulgaris-cuvier-reared-paralarvae
#2
Gianluca Accogli, Giovanni Scillitani, Donatella Mentino, Salvatore Desantis
The Octopus vulgaris farming is impaired by the high mortality of the paralarvae during the first month of life. Several factors have been investigated in this regard, but no data exist on the body surface mucus, which represents the interface with the outside environment. This study included morphometric analysis and glycoconjugates characterization of skin mucus in reared Octopus vulgaris paralarvae during the first month of life. Four types of mucous cells were distinguished:  mucous 1 (m1) and mucous 2 (m2) cells were scattered in the mantle epidermis, mucous 3 (m3) and mucous 4 (m4) in the epithelium surrounding the sucker...
September 12, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046049/treatment-of-diabetic-foot-ulcers-with-therapeutic-magnetic-resonance-tmr%C3%A2-improves-the-quality-of-granulation-tissue
#3
Letizia Ferroni, Chiara Gardin, Andrea De Pieri, Maria Sambataro, Elena Seganfreddo, Chiara Goretti, Elisabetta Iacopi, Barbara Zavan, Alberto Piaggesi
Diabetic foot ulcers (DFUs) often result in severely adverse outcomes, such as serious infections, hospitalization, and lower extremity amputations. In last few years, to improve the outcome of DFUs, clinicians and researchers put their attention on the application of low intensity pulsating electro-magnetic fields through Therapeutic Magnetic Resonance (TMR®). In our study, patients with DFUs have been divided into two groups: The Sham Group treated with non-functioning TMR® device, and the Active Group treated with a functioning device...
August 7, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29046044/lipidomics-profiling-reveals-the-role-of-glycerophospholipid-metabolism-in-psoriasis
#4
Chunwei Zeng, Bo Wen, Guixue Hou, Li Lei, Zhanlong Mei, Xuekun Jia, Xiaomin Chen, Wu Zhu, Jie Li, Yehong Kuang, Weiqi Zeng, Juan Su, Siqi Liu, Cong Peng, Xiang Chen
Psoriasis is a common and chronic inflammatory skin disease that is complicated by gene-environment interactions. Although genomic, transcriptomic, and proteomic analyses have been performed to investigate the pathogenesis of psoriasis, the role of metabolites in psoriasis, particularly of lipids, remains unclear. Lipids not only comprise the bulk of the cellular membrane bilayers but also regulate a variety of biological processes such as cell proliferation, apoptosis, immunity, angiogenesis, and inflammation...
October 1, 2017: GigaScience
https://www.readbyqxmd.com/read/29046014/tomato-cry1a-plays-a-critical-role-in-the-regulation-of-phytohormone-homeostasis-plant-development-and-carotenoid-metabolism-in-fruits
#5
Chao-Chao Liu, Golam Jalal Ahammed, Guo-Ting Wang, Chang-Jie Xu, Kun-Song Chen, Yan-Hong Zhou, Jing-Quan Yu
Blue light photoreceptors, cryptochromes (CRYs), regulate multiple aspects of plant growth and development. However, our knowledge of CRYs is predominantly based on model plant Arabidopsis at early growth stage. In this study, we elucidated functions of CRY1a gene in mature tomato (Solanum lycopersicum) plants by using cry1a mutants and CRY1a overexpressing lines (OE-CRY1a-1 and OE-CRY1a-2). In comparison with wild-type plants, cry1a mutants are relatively tall, accumulate low biomass and bear more fruits, whereas OE-CRY1a plants are short stature, and they not only flower lately but also bear less fruits...
October 18, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29045972/-acetylsalicylic-acid-treatment-enhanced-immunomodulatory-function-of-mesenchymal-stem-cells-derived-from-gingiva
#6
R L Yang, T T Yu, Y H Zhou
OBJECTIVE: To analyze the role of acetylsalicylic acid (ASA) in immunomodulation of mesenchymal stem cells derived from gingiva (GMSCs), and to explore the role of ASA in enhancing the immumomodulation of GMSCs and the capacity of GMSCs to treat immune disorders and the underlying mechanism. METHODS: Flow cytometry analysis were used to analyze the role of ASA in the expression of stem cells surface markers CD146, CD105, CD90, CD34 and CD45 in GMSCs,and the GMSCs proliferation was analyzed by 5-bromo-2-deoxyuridine (BrdU) staining and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29045940/mir-124-attenuates-osteoclastogenic-differentiation-of-bone-marrow-monocytes-via-targeting-rab27a
#7
Lian Tang, Yiran Yin, Juncai Liu, Zhong Li, Xiaobo Lu
BACKGROUND/AIMS: With the aging population increases, senile osteoporosis has become a global public health problem. Previous evidence has shown that miR-124 has important effects on the occurrence and development of osteoporosis. However, the role of miR-124 in the process of osteoclastogenesis is still obscure. METHODS: First of all, we measured the expression level of miR-124 in bone marrow monocytes (BMMs) of osteoporotic mice (ovariectomized mice: OVX). Next, we evaluated the alteration of miR-124 during osteoclast differentiation of BMMs...
October 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29045847/cross-tissue-transcriptomic-analysis-of-human-secondary-lymphoid-organ-residing-ilc3s-reveals-a-quiescent-state-in-the-absence-of-inflammation
#8
Yotam E Bar-Ephraim, Ferry Cornelissen, Natalie Papazian, Tanja Konijn, Remco M Hoogenboezem, Mathijs A Sanders, Bart A Westerman, Mehmet Gönültas, Jaap Kwekkeboom, Joke M M Den Haan, Rogier M Reijmers, Reina E Mebius, Tom Cupedo
A substantial number of human and mouse group 3 innate lymphoid cells (ILC3s) reside in secondary lymphoid organs, yet the phenotype and function of these ILC3s is incompletely understood. Here, we employed an unbiased cross-tissue transcriptomic approach to compare human ILC3s from non-inflamed lymph nodes and spleen to their phenotypic counterparts in inflamed tonsils and from circulation. These analyses revealed that, in the absence of inflammation, lymphoid organ-residing ILC3s lack transcription of cytokines associated with classical ILC3 functions...
October 17, 2017: Cell Reports
https://www.readbyqxmd.com/read/29045844/a-b-cell-regulome-links-notch-to-downstream-oncogenic-pathways-in-small-b-cell-lymphomas
#9
Russell J H Ryan, Jelena Petrovic, Dylan M Rausch, Yeqiao Zhou, Caleb A Lareau, Michael J Kluk, Amanda L Christie, Winston Y Lee, Daniel R Tarjan, Bingqian Guo, Laura K H Donohue, Shawn M Gillespie, Valentina Nardi, Ephraim P Hochberg, Stephen C Blacklow, David M Weinstock, Robert B Faryabi, Bradley E Bernstein, Jon C Aster, Warren S Pear
Gain-of-function Notch mutations are recurrent in mature small B cell lymphomas such as mantle cell lymphoma (MCL) and chronic lymphocytic leukemia (CLL), but the Notch target genes that contribute to B cell oncogenesis are largely unknown. We performed integrative analysis of Notch-regulated transcripts, genomic binding of Notch transcription complexes, and genome conformation data to identify direct Notch target genes in MCL cell lines. This B cell Notch regulome is largely controlled through Notch-bound distal enhancers and includes genes involved in B cell receptor and cytokine signaling and the oncogene MYC, which sustains proliferation of Notch-dependent MCL cell lines via a Notch-regulated lineage-restricted enhancer complex...
October 17, 2017: Cell Reports
https://www.readbyqxmd.com/read/29045837/the-circadian-clock-gene-bmal1-controls-thyroid-hormone-mediated-spectral-identity-and-cone-photoreceptor-function
#10
Onkar B Sawant, Amanda M Horton, Olivia F Zucaro, Ricky Chan, Vera L Bonilha, Ivy S Samuels, Sujata Rao
Circadian clocks regulate various aspects of photoreceptor physiology, but their contribution to photoreceptor development and function is unclear. Cone photoreceptors are critical for color vision. Here, we define the molecular function of circadian activity within cone photoreceptors and reveal a role for the clock genes Bmal1 and Per2 in regulating cone spectral identity. ChIP analysis revealed that BMAL1 binds to the promoter region of the thyroid hormone (TH)-activating enzyme type 2 iodothyronine deiodinase (Dio2) and thus regulates the expression of Dio2...
October 17, 2017: Cell Reports
https://www.readbyqxmd.com/read/29045804/matrine-induced-g0-g1-arrest-and-apoptosis-in-human-acute-t-cell-lymphoblastic-leukemia-t-all-cells
#11
Aslı Tetik Vardarlı, Zekeriya Düzgün, Ceren Erdem, Burçin Tezcanli Kaymaz, Zuhal Eroglu, Vildan Bozok Çetintas
Matrine, a natural product extracted from the root of Sophora flavescens, is a promising alternative drug in different types of cancer. Here, we aimed to investigate the therapeutic effects and underlying molecular mechanisms of matrine on human acute lymphoblastic leukemia (ALL) cell line, CCRF-CEM. Cell viability and IC50 values were determined by WST-1 cell cytotoxicity assay. Cell cycle distribution and apoptosis rates were analyzed by flow cytometry. Expression patterns of 44 selected miRNAs and 44 RNAs were analyzed by quantitative reverse transcription polymerase chain reaction (qRT-PCR) using the Applied Biosystems 7500 Fast Real-Time PCR System...
October 18, 2017: Bosnian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29045784/metal-dependence-of-xylose-isomerase-from-piromyces-sp-e2-explored-by-activity-profiling-and-protein-crystallography
#12
Misun Lee, Henriette J Rozeboom, Paul de Waal, Rene de Jong, Hanna M Dudek, Dick B Janssen
Xylose isomerase from Piromyces sp. E2 (PirXI) can be used for equipping Saccharomyces cerevisiae with the capacity to ferment xylose to ethanol. The biochemical properties and structure of the enzyme have not been described even though its metal content, catalytic parameters and expression level are critical for rapid xylose utilization. We have isolated the enzyme after high-level expression in E. coli, analyzed the metal-dependence of its catalytic properties and solved twelve crystal structures in the presence of different metals, substrates, and substrate analogs...
October 18, 2017: Biochemistry
https://www.readbyqxmd.com/read/29045754/genomic-studies-of-local-adaptation-in-natural-plant-populations
#13
Victoria L Sork
Local adaptation arises as a result of selection by the local environment favoring phenotypes that enhance fitness. Geographic patterns of phenotypic variation are in part due to this selective process. Classically, the genetic basis of those phenotypes has been studied in plant populations using a quantitative genetic approach in which plants from different source populations are grown in common environments, in reciprocal transplant experiments, or in studies across a wide geographic and environmentally heterogeneous area...
October 14, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/29045725/stemmapper-a-curated-gene-expression-database-for-stem-cell-lineage-analysis
#14
José P Pinto, Rui S R Machado, Ramiro Magno, Daniel V Oliveira, Susana Machado, Raquel P Andrade, José Bragança, Isabel Duarte, Matthias E Futschik
Transcriptomic data have become a fundamental resource for stem cell (SC) biologists as well as for a wider research audience studying SC-related processes such as aging, embryonic development and prevalent diseases including cancer, diabetes and neurodegenerative diseases. Access and analysis of the growing amount of freely available transcriptomics datasets for SCs, however, are not trivial tasks. Here, we present StemMapper, a manually curated gene expression database and comprehensive resource for SC research, built on integrated data for different lineages of human and mouse SCs...
October 17, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29045593/a-teleost-androgen-promotes-development-of-primary-ovarian-follicles-in-coho-salmon-and-rapidly-alters-the-ovarian-transcriptome
#15
Christopher Monson, Kristy Forsgren, Giles Goetz, Louisa Harding, Penny Swanson, Graham Young
Recent studies using several teleost models have revealed that androgens increase the size of previtellogenic (primary and/or early secondary) ovarian follicles. To explore our hypothesis that androgens drive the development of primary follicles into early secondary follicles, and to determine the mechanisms underlying these androgenic effects, we exposed juvenile coho salmon to near-physiological and relatively sustained levels of the non-aromatizable androgen 11-ketotestosterone (11-KT). This resulted in significant growth of primary ovarian follicles after 10 and 20 days, with follicles after 20 days displaying a morphological phenotype characteristic of early secondary follicles (presence of cortical alveoli)...
October 13, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29045568/loss-of-protein-kinase-novel-1-pkn1-is-associated-with-mild-systolic-and-diastolic-contractile-dysfunction-increased-phospholamban-thr17-phosphorylation-and-exacerbated-ischaemia-reperfusion-injury
#16
Asvi A Francois, Kofo Obasanjo-Blackshire, James E Clark, Andrii Boguslavskyi, Mark R Holt, Peter Parker, Michael S Marber, Richard J Heads
Aims: PKN1 is a stress-responsive protein kinase acting downstream of small GTP-binding proteins of the Rho/Rac family. The aim was to determine its role in endogenous cardioprotection. Methods and Results: Hearts from PKN1 knockout (KO) or wild type (WT) littermate control mice were perfused in Langendorff mode and subjected to global ischemia and reperfusion (I/R). Myocardial infarct size was doubled in PKN1 KO hearts compared to WT hearts. PKN1 was basally phosphorylated on the activation loop Thr778 PDK1 target site which was unchanged during I/R...
October 16, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/29045551/validation-of-a-metastatic-assay-using-biopsies-to-improve-risk-stratification-in-patients-with-prostate-cancer-treated-with-radical-radiation-therapy
#17
S Jain, C A Lyons, S M Walker, S McQuaid, S Hynes, D Mitchell, B Pang, G E Logan, A M McCavigan, D O'Rourke, D McArt, S McDade, I Mills, K M Prise, L A Knight, C J Steele, P W Medlow, V Berge, B Katz, D A Loblaw, D P Harkin, J James, J M O'Sullivan, R D Kennedy, D J Waugh
BackgroundRadiotherapy is an effective treatment for intermediate/high-risk locally-advanced prostate cancer, however, >30% of patients relapse within five years. Clinicopathological parameters currently fail to identify patients prone to systemic relapse and those whom treatment intensification may be beneficial. The purpose of this study was to independently validate the performance of a 70-gene Metastatic Assay in a cohort of diagnostic biopsies from patients treated with radical radiotherapy and androgen deprivation therapy (ADT)...
October 10, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29045534/evaluation-of-variable-selection-methods-for-random-forests-and-omics-data-sets
#18
Frauke Degenhardt, Stephan Seifert, Silke Szymczak
Machine learning methods and in particular random forests are promising approaches for prediction based on high dimensional omics data sets. They provide variable importance measures to rank predictors according to their predictive power. If building a prediction model is the main goal of a study, often a minimal set of variables with good prediction performance is selected. However, if the objective is the identification of involved variables to find active networks and pathways, approaches that aim to select all relevant variables should be preferred...
October 16, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/29045529/impact-of-genetic-variations-in-the-mapk-signaling-pathway-on-outcome-in-metastatic-colorectal-cancer-patients-treated-with-first-line-folfiri-and-bevacizumab-data-from-fire-3-and-tribe-trials
#19
M D Berger, S Stintzing, V Heinemann, D Yang, S Cao, Y Sunakawa, Y Ning, S Matsusaka, S Okazaki, Y Miyamoto, M Suenaga, M Schirripa, S Soni, W Zhang, A Falcone, F Loupakis, H-J Lenz
Background: The MAPK-interacting kinase 1 (MKNK1) is localized downstream of the RAS/RAF/ERK and the MAP3K1/MKK/p38 signaling pathway. Through phosphorylation MKNK1 regulates the function of eukaryotic translation initiation factor 4E, a key player in translational control, whose expression is often upregulated in metastatic colorectal cancer patients (mCRC). Preclinical data suggest that MKNK1 increases angiogenesis by upregulating angiogenic factors. We therefore hypothesize that variations in the MKNK1 gene predict outcome in mCRC patients treated with first-line FOLFIRI and bevacizumab (bev)...
August 2, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29045487/the-psychosocial-impact-of-leg-ulcers-in-patients-with-sickle-cell-disease-i-don-t-want-them-to-know-my-little-secret
#20
Nkeiruka I Umeh, Brittany Ajegba, Ashley J Buscetta, Khadijah E Abdallah, Caterina P Minniti, Vence L Bonham
BACKGROUND: Sickle cell disease (SCD) impacts millions of individuals worldwide and more than 100,000 people in the United States. Leg ulcers are the most common cutaneous manifestation of SCD. The health status of individuals living with chronic leg ulcers is not only influenced by clinical manifestations such as pain duration and intensity, but also by psychosocial factors. Garnering insights into the psychosocial impact can provide a more holistic view of their influence on quality of life...
2017: PloS One
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