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https://www.readbyqxmd.com/read/28211234/lymphoepithelioma-like-carcinoma-of-cervix-cytological-features-on-conventional-cervical-smear
#1
Ruchi Rathore, Vinod K Arora, Bharat Singh
Lymphoepithelioma-like carcinoma (LELC) is a rare neoplasm of the cervix. The importance of distinguishing this undifferentiated carcinoma with a predominant lymphocytic infiltrate lies in the fact that despite being poorly differentiated they have a better prognosis. The diagnosis however becomes more challenging when the pathologist is provided with a small cervical biopsy or a Papanicolaou smear. While the reports describing histology and their relation to Epstein-Barr virus (EBV) are many, there are only few case reports describing the cytology of these tumors...
March 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28207793/the-drosophila-speciation-factor-hmr-localizes-to-genomic-insulator-sites
#2
Thomas Andreas Gerland, Bo Sun, Pawel Smialowski, Andrea Lukacs, Andreas Walter Thomae, Axel Imhof
Hybrid incompatibility between Drosophila melanogaster and D. simulans is caused by a lethal interaction of the proteins encoded by the Hmr and Lhr genes. In D. melanogaster the loss of HMR results in mitotic defects, an increase in transcription of transposable elements and a deregulation of heterochromatic genes. To better understand the molecular mechanisms that mediate HMR's function, we measured genome-wide localization of HMR in D. melanogaster tissue culture cells by chromatin immunoprecipitation. Interestingly, we find HMR localizing to genomic insulator sites that can be classified into two groups...
2017: PloS One
https://www.readbyqxmd.com/read/28205397/pancreatic-involvement-by-metastasizing-neoplasms-as-determined-by-endoscopic-ultrasound-guided-fine-needle-aspiration-a-clinicopathologic-characterization
#3
Miroslav Sekulic, Khalid Amin, Tetyana Mettler, Lizette K Miller, Shawn Mallery, Jimmie Stewart
BACKGROUND: Pancreatic tumors often represent primary neoplasms, however organ involvement with metastatic disease can occur. The use of endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) to determine the underlying pathology provides guidance of clinical management. METHODS: 25 cases were identified in a retrospective review of our institution's records from 2006 to 2016. Clinical parameters and prognosis are described. RESULTS: Metastatic lesions to the pancreas diagnosed by EUS-FNA accounted for 4...
February 16, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28203620/schwannoma-of-the-tongue-a-common-tumour-in-a-rare-location-a-case-report
#4
Ines Abreu, Diogo Roriz, Pedro Rodrigues, Ângela Moreira, Cristina Marques, Filipe Caseiro Alves
Schwannoma is a benign tumour that arises from Schwann cells of the peripheral nerve sheath, and is a common tumour of the head and neck. However, intraoral location is very uncommon (only 1% of all head and neck schwannomas). We report a rare case of lingual schwannoma in a 20-year-old male patient who presented with a small, slow-growing mass over the right lateral border of the tongue with 1 year of evolution and that became recently ulcerated. The patient underwent MRI examination and complete surgical excision...
2017: European Journal of Radiology Open
https://www.readbyqxmd.com/read/28195185/microglia-preconditioned-by-oxygen-glucose-deprivation-promote-functional-recovery-in-ischemic-rats
#5
Masato Kanazawa, Minami Miura, Masafumi Toriyabe, Misaki Koyama, Masahiro Hatakeyama, Masanori Ishikawa, Takashi Nakajima, Osamu Onodera, Tetsuya Takahashi, Masatoyo Nishizawa, Takayoshi Shimohata
Cell-therapies that invoke pleiotropic mechanisms may facilitate functional recovery in stroke patients. We hypothesized that a cell therapy using microglia preconditioned by optimal oxygen-glucose deprivation (OGD) is a therapeutic strategy for ischemic stroke because optimal ischemia induces anti-inflammatory M2 microglia. We first delineated changes in angiogenesis and axonal outgrowth in the ischemic cortex using rats. We found that slight angiogenesis without axonal outgrowth were activated at the border area within the ischemic core from 7 to 14 days after ischemia...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28194645/expression-of-a-novel-ciliary-protein-iiig9-during-the-differentiation-and-maturation-of-ependymal-cells
#6
M Cifuentes, V Baeza, P M Arrabal, R Visser, J M Grondona, N Saldivia, F Martínez, F Nualart, K Salazar
IIIG9 is the regulatory subunit 32 of protein phosphatase 1 (PPP1R32), a key phosphatase in the regulation of ciliary movement. IIIG9 localization is restricted to cilia in the trachea, fallopian tube, and testicle, suggesting its involvement in the polarization of ciliary epithelium. In the adult brain, IIIG9 mRNA has only been detected in ciliated ependymal cells that cover the ventricular walls. In this work, we prepared a polyclonal antibody against rat IIIG9 and used this antibody to show for the first time the ciliary localization of this protein in adult ependymal cells...
February 13, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28185421/fine-needle-aspiration-findings-of-xp11-translocation-renal-cell-carcinoma-metastatic-to-a-hilar-lymph-node
#7
Reima El Naili, Marlo Nicolas, Amanda Gorena, Maria Luisa C Policarpio-Nicolas
Xp11 translocation renal cell carcinoma (RCC) is a specific type of renal cell carcinoma recently placed under the "MiT family translocation RCC" at the last 2013 ISUP Vancouver classification of renal neoplasia. This tumor contains variable proportions of clear cells and could easily mimic papillary RCC, clear cell type, and clear cell papillary RCC. Given the small number of published cytologic findings of this tumor, it could easily present as a diagnostic pitfall. We describe a case of a 23-year-old man with a history of prior nephrectomy who presented with multiple mediastinal lymphadenopathies on imaging surveillance follow-up...
February 10, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28182306/effect-of-a-hypoxic-microenvironment-after-radiofrequency-ablation-on-residual-hepatocellular-cell-migration-and-invasion
#8
Yuyang Tong, Haiyun Yang, Xiaolin Xu, Jingliang Ruan, Ming Liang, Jiayi Wu, Baoming Luo
Clinical observations have shown that the boundary of tumor ablation is often less than safe border and that the use of radiofrequency ablation (RFA) in the treatment of hepatocellular carcinoma (HCC) may probably accelerate its recurrence and metastasis. RFA can cause the formation of a transition zone between normal liver tissues and necrotic coagulation, where blood stagnation and thrombosis expose residual cancer cells to a hypoxic microenvironment. As the blocked vessels are slowly reperfused, the oxygen supply is gradually restored...
February 9, 2017: Cancer Science
https://www.readbyqxmd.com/read/28180997/functional-characterization-of-a-novel-disaccharide-transporter-in-lobster-hepatopancreas
#9
Olivia Scheffler, Gregory A Ahearn
In animals, the accepted model of carbohydrate digestion and absorption involves reduction of disaccharides into the monosaccharides glucose, fructose, and galactose followed by their individual transmembrane transport into cells. In 2011, a gene for a distinct disaccharide sucrose transporter (SCRT) was found in Drosophila melanogaster and characterized in a yeast expression system. The purpose of the present investigation was to functionally identify and characterize a putative disaccharide transporter analog in the hepatopancreas of the American lobster, Homarus americanus...
February 8, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/28167864/ezetimibe-reduces-cholesterol-content-and-nf-kappab-activation-in-liver-but-not-in-intestinal-tissue-in-guinea-pigs
#10
Peter Fraunberger, Elisabeth Gröne, Hermann-Josef Gröne, Heinz Drexel, Autar K Walli
BACKGROUND: Statins (HMG CoA reductase inhibitors), in addition to reducing circulating cholesterol and incidence of coronary heart disease, also have pleiotropic, anti-inflammatory effects. Patients with chronic liver diseases, non-alcoholic fatty liver disease (NAFLD) or hepatitis C are often excluded from statin therapy because of adverse effects in a small cohort of patients despite increased cardiovascular risk cholesterol. Ezetimibe, which inhibits cholesterol absorption by inhibition of Niemann-Pick C1 like 1 (NPC1L1) protein in the brush border of intestinal cells, has been suggested as a new therapeutic option in these patients...
2017: Journal of Inflammation
https://www.readbyqxmd.com/read/28165867/hypermethylated-ltr-retrotransposon-exhibits-enhancer-activity
#11
Tianxiang Hu, Xingguo Zhu, Wenhu Pi, Miao Yu, Huidong Shi, Dorothy Tuan
LTR retrotransposons are repetitive DNA elements comprising ∼10% of the human genome. They are silenced by hypermethylation of cytosines in CpG dinucleotides and are considered parasitic DNA serving no useful function for the host genome. However, hypermethylated LTRs contain enhancer and promoter sequences and can promote tissue-specific transcription of cis-linked genes. To resolve the apparent paradox of hypermethylated LTRs possessing transcriptional activities, we studied the ERV-9 LTR retrotransposon located at the 5' border of the transcriptionally active β-globin gene locus in human erythroid progenitor and erythroleukemia K562 cells...
February 6, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28163023/a-novel-urotensin-ii-receptor-antagonist-kr-36996-improved-cardiac-function-and-attenuated-cardiac-hypertrophy-in-experimental-heart-failure
#12
Kwang-Seok Oh, Jeong Hyun Lee, Kyu Yang Yi, Chae Jo Lim, Byung Kil Park, Ho Won Seo, Byung Ho Lee
Urotensin II and its receptor are thought to be involved in various cardiovascular diseases such as heart failure, pulmonary hypertension and atherosclerosis. Since the regulation of the urotensin II/urotensin II receptor offers a great potential for therapeutic strategies related to the treatment of cardiovascular diseases, the study of selective and potent antagonists for urotensin II receptor is more fascinating. This study was designed to determine the potential therapeutic effects of a newly developed novel urotensin II receptor antagonist, N-(1-(3-bromo-4-(piperidin-4-yloxy)benzyl)piperidin-4-yl)benzo[b]thiophene-3-carboxamide (KR-36996), in experimental models of heart failure...
February 3, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28161726/medial-entorhinal-cortex-and-medial-septum-contribute-to-self-motion-based-linear-distance-estimation
#13
Pierre-Yves Jacob, Marta Gordillo-Salas, Justine Facchini, Bruno Poucet, Etienne Save, Francesca Sargolini
Path integration is a navigation strategy that requires animals to integrate self-movements during exploration to determine their position in space. The medial entorhinal cortex (MEC) has been suggested to play a pivotal role in this process. Grid cells, head-direction cells, border cells as well as speed cells within the MEC collectively provide a dynamic representation of the animal position in space based on the integration of self-movements. All these cells are strongly modulated by theta oscillations, thus suggesting that theta rhythmicity in the MEC may be essential for integrating and coordinating self-movement information during navigation...
February 4, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28161642/drosophila-tensin-plays-an-essential-role-in-cell-migration-and-planar-polarity-formation-during-oogenesis-by-mediating-integrin-dependent-extracellular-signals-to-actin-organization
#14
In Jun Cha, Jang Ho Lee, Kyoung Sang Cho, Sung Bae Lee
Oogenesis in Drosophila involves very dynamic cellular changes such as cell migration and polarity formation inside an ovary during short period. Previous studies identified a number of membrane-bound receptors directly receiving certain types of extracellular inputs as well as intracellular signalings to be involved in the regulation of these dynamic cellular changes. However, yet our understanding on exactly how these receptor-mediated extracellular inputs lead to dynamic cellular changes remains largely unclear...
February 1, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28160592/development-of-proliferative-verrucous-leukoplakia-pvl-in-oral-lichen-planus-is-it-not-a-clinical-spectrum-of-pvl
#15
D-T Fernandes, A-R Santos-Silva, P-A Vargas, M-A Lopes
In their recent publication, Garcia-Pola et al. (2016) suggested the development of proliferative verrucous leukoplakia (PVL) in oral lichen planus (OLP). It was described as a preliminary study, where this association supposedly occurred (1). They presented a retrospective analysis with a long-term follow-up, showing an interesting relationship between these lesions. It is important to emphasize that the clinical profile of patients with PVL is well recognized in the literature, mainly affecting non-smoking and non-drinking elderly women, older than 60 years (2-4)...
February 4, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28159432/large-vessel-vasculopathy-in-children-with-sickle-cell-disease-a-magnetic-resonance-imaging-study-of-infarct-topography-and-focal-atrophy
#16
Kristin P Guilliams, Melanie E Fields, Dustin K Ragan, Yasheng Chen, Cihat Eldeniz, Monica L Hulbert, Michael M Binkley, James N Rhodes, Joshua S Shimony, Robert C McKinstry, Katie D Vo, Hongyu An, Jin-Moo Lee, Andria L Ford
BACKGROUND: Large-vessel vasculopathy (LVV) increases stroke risk in pediatric sickle cell disease beyond the baseline elevated stroke risk in this vulnerable population. The mechanisms underlying this added risk and its unique impact on the developing brain are not established. METHODS: We analyzed magnetic resonance imaging and angiography scans of 66 children with sickle cell disease and infarcts by infarct density heatmaps and Jacobian determinants, a metric utilized to delineate focal volume change, to investigate if infarct location, volume, frequency, and cerebral atrophy differed among hemispheres with and without LVV...
December 7, 2016: Pediatric Neurology
https://www.readbyqxmd.com/read/28147279/endothelial-basement-membrane-laminin-511-contributes-to-endothelial-junctional-tightness-and-thereby-inhibits-leukocyte-transmigration
#17
Jian Song, Xueli Zhang, Konrad Buscher, Ying Wang, Huiyu Wang, Jacopo Di Russo, Lixia Li, Stefan Lütke-Enking, Alexander Zarbock, Anika Stadtmann, Paul Striewski, Benedikt Wirth, Ivan Kuzmanov, Heinz Wiendl, Dörte Schulte, Dietmar Vestweber, Lydia Sorokin
Endothelial basement membranes constitute barriers to extravasating leukocytes during inflammation, a process where laminin isoforms define sites of leukocyte exit; however, how this occurs is poorly understood. In addition to a direct effect on leukocyte transmigration, we show that laminin 511 affects endothelial barrier function by stabilizing VE-cadherin at junctions and downregulating expression of CD99L2, correlating with reduced neutrophil extravasation. Binding of endothelial cells to laminin 511, but not laminin 411 or non-endothelial laminin 111, enhanced transendothelial cell electrical resistance (TEER) and inhibited neutrophil transmigration...
January 31, 2017: Cell Reports
https://www.readbyqxmd.com/read/28145223/light-and-transmission-electron-microscopy-of-cepedea-longa-opalinidae-from-fejervarya-limnocharis
#18
Can Li, Xiao Jin, Ming Li, Guitang Wang, Hong Zou, Wenxiang Li, Shangong Wu
Cepedea longa Bezzenberger, 1904, collected from Fejervarya limnocharis (Amphibia, Anura, Ranidae) from Honghu Lake, Hubei Province, China in May-July 2016, is described at both light and transmission electron microscope levels. This is the first electron microscopic study of this species. Cepedea longa possesses a developed fibrillar skeletal system, composed of longitudinal fibrillar bands and transversal fibrils as well as numerous thin microfibrils dispersed in the endoplasm, which may play an important role in morphogenesis and offer some resilience to deformations of the cell...
2017: Parasite: Journal de la Société Française de Parasitologie
https://www.readbyqxmd.com/read/28143705/non-autonomous-role-of-cdc42-in-cell-cell-communication-during-collective-migration
#19
Nathalie Colombié, Valérie Choesmel-Cadamuro, Jennifer Series, Gregory Emery, Xiaobo Wang, Damien Ramel
Collective cell migration is involved in numerous processes both physiological, such as embryonic development, and pathological such as metastasis. Compared to single cell migration, collective motion requires cell behaviour coordination through an as-yet poorly understood but critical cell-cell communication mechanism. Using Drosophila border cell migration, we show here that the small Rho GTPase Cdc42 regulates cell-cell communication. Indeed, we demonstrate that Cdc42 controls protrusion formation in a cell non-autonomous manner...
January 28, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28142205/reprogramming-postnatal-human-epidermal-keratinocytes-toward-functional-neural-crest-fates
#20
Vivek K Bajpai, Laura Kerosuo, Georgios Tseropoulos, Kirstie A Cummings, Xiaoyan Wang, Pedro Lei, Biao Liu, Song Liu, Gabriela Popescu, Marianne E Bronner, Stelios T Andreadis
During development, neural crest cells are induced by signaling events at the neural plate border of all vertebrate embryos. Initially arising within the central nervous system, neural crest cells subsequently undergo an epithelial to mesenchymal transition to migrate into the periphery, where they differentiate into diverse cell types. Here we provide evidence that postnatal human epidermal keratinocytes, in response to FGF2 and IGF1 signals, can be reprogrammed toward a neural crest fate. Genome-wide transcriptome analyses show that keratinocyte-derived neural crest cells are similar to those derived from human embryonic stem cells...
January 31, 2017: Stem Cells
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