keyword
MENU ▼
Read by QxMD icon Read
search

Nucleolar pattern

keyword
https://www.readbyqxmd.com/read/29127023/interobserver-variation-among-pathologists-and-refinement-of-criteria-in-distinguishing-separate-primary-tumours-from-intrapulmonary-metastases-in-lung
#1
Andrew G Nicholson, Kathleen Torkko, Patrizia Viola, Edwina Duhig, Kim Geisinger, Alain C Borczuk, Kenzo Hiroshima, Ming S Tsao, Arne Warth, Sylvie Lantuejoul, Prudence A Russell, Erik Thunnissen, Alberto Marchevsky, Mari Mino-Kenudson, Mary Beth Beasley, Johan Botling, Sanja Dacic, Yasushi Yatabe, Masayuki Noguchi, William D Travis, Keith Kerr, Fred R Hirsch, Lucian R Chirieac, Ignacio I Wistuba, Andre Moreira, Jin-Haeng Chung, Teh Ying Chou, Lukas Bubendorf, Gang Chen, Giuseppe Pelosi, Claudia Poleri, Frank C Detterbeck, Wilbur A Franklin
Multiple tumor nodules (MTNs) are seen with increasing frequency in clinical practice. Based on the 2015 WHO classification of lung tumors, we assessed the reproducibility of the comprehensive histologic assessment (CHA) to distinguish second primary lung cancers (SPLC) from intrapulmonary metastases (IPM), looking for the most distinctive histological features. An international panel of lung pathologists reviewed a scanned sequential cohort of 126 tumors from 48 patients, recorded an agreed set of histologic features, including tumor typing and predominant pattern of adenocarcinoma, thereby opining whether the case was SPLC, IPM or a combination...
November 7, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29031033/an-arabidopsis-divergent-pumilio-protein-apum24-is-essential-for-embryogenesis-and-required-for-faithful-pre-rrna-processing
#2
Thiruvenkadam Shanmugam, Nazia Abbasi, Hyung-Sae Kim, Ho Bang Kim, Nam-Il Park, Guen Tae Park, Sung Aeong Oh, Soon Ki Park, Douglas G Muench, Yeonhee Choi, Youn-Il Park, Sang-Bong Choi
Pumilio RNA-binding proteins are largely involved in mRNA degradation and translation repression. However, a few evolutionarily divergent Pumilios are also responsible for proper pre-rRNA processing in human and yeast. Here, we describe an essential Arabidopsis nucleolar Pumilio, APUM24, that is expressed in tissues undergoing rapid proliferation and cell division. A T-DNA insertion for APUM24 did not affect the male and female gametogenesis, but instead resulted in a negative female gametophytic effect on zygotic cell division immediately after fertilization...
October 14, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28900032/nucleolar-and-spindle-associated-protein-1-nusap1-interacts-with-a-sumo-e3-ligase-complex-during-chromosome-segregation
#3
Christine A Mills, Aussie Suzuki, Anthony Arceci, Jin Yao Mo, Alex Duncan, Edward D Salmon, Michael J Emanuele
The mitotic spindle is composed of dynamic microtubules and associated proteins that together direct chromosome movement during mitosis. The spindle plays a vital role in accurate chromosome segregation fidelity and is a therapeutic target in cancer. Nevertheless, the molecular mechanisms by which many spindle-associated proteins function remains unknown. The nucleolar and spindle-associated protein NUSAP1 is a microtubule-binding protein implicated in spindle stability and chromosome segregation. We show here that NUSAP1 localizes to dynamic spindle microtubules in a unique chromosome-centric pattern, in the vicinity of overlapping microtubules, during metaphase and anaphase of mitosis...
October 20, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28817650/snorna-and-pirna-expression-levels-modified-by-tobacco-use-in-women-with-lung-adenocarcinoma
#4
Natasha Andressa Nogueira Jorge, Gabriel Wajnberg, Carlos Gil Ferreira, Benilton de Sa Carvalho, Fabio Passetti
Lung cancer is one of the most frequent types of cancer worldwide. Most patients are diagnosed at advanced stage and thus have poor prognosis. Smoking is a risk factor for lung cancer, however most smokers do not develop lung cancer while 20% of women with lung adenocarcinoma are non-smokers. Therefore, it is possible that these two groups present differences besides the smoking status, including differences in their gene expression signature. The altered expression patterns of non-coding RNAs in complex diseases make them potential biomarkers for diagnosis and treatment...
2017: PloS One
https://www.readbyqxmd.com/read/28807021/serological-and-morphological-prognostic-factors-in-patients-with-interstitial-pneumonia-with-autoimmune-features
#5
Yuhei Ito, Machiko Arita, Shogo Kumagai, Reoto Takei, Maki Noyama, Fumiaki Tokioka, Keisuke Nishimura, Takashi Koyama, Kenji Notohara, Tadashi Ishida
BACKGROUND: To identify the prognostic factors for survival in patients with interstitial pneumonia with autoimmune features (IPAF) who meet the serological domain of the IPAF criteria. METHODS: We retrospectively analysed 99 IPAF patients who met the serological domain and were hospitalised at the Respiratory Medicine Unit of Kurashiki Central Hospital from 1999 to 2015. The high-resolution computed tomography findings were usual interstitial pneumonia (UIP; n = 1), non-specific interstitial pneumonia (NSIP; n = 63), NSIP with organizing pneumonia (OP) overlap (n = 15), and OP (n = 20)...
August 14, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28792799/investigating-associations-between-proliferation-indices-c-kit-and-lymph-node-stage-in-canine-mast-cell-tumors
#6
Erika Lauren Krick, Matti Kiupel, Amy C Durham, Tuddow Thaiwong, Dorothy C Brown, Karin U Sorenmo
Previous studies have evaluated cellular proliferation indices, KIT expression, and c-kit mutations to predict the clinical behavior of canine mast cell tumors (MCTs). The study purpose was to retrospectively compare mitotic index, argyrophilic nucleolar organizer regions (AgNORs)/nucleus, Ki-67 index, KIT labeling pattern, and internal tandem duplication mutations in c-KIT between stage I and stage II grade II MCTs. Medical records and tumor biopsy samples from dogs with Grade II MCTs with cytological or histopathological regional lymph node evaluation were included...
August 9, 2017: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/28700110/copper-alkyne-complexation-responsible-for-the-nucleolar-localization-of-quadruplex-nucleic-acid-drugs-labeled-by-click-reactions
#7
Joël Lefebvre, Corinne Guetta, Florent Poyer, Florence Mahuteau-Betzer, Marie-Paule Teulade-Fichou
G-Quadruplex(es) (G4) are noncanonical nucleic-acid structures found in guanine-rich sequences. They can be targeted with small molecules (G4 ligands) acting as reporters, for tracking both in vitro and in cells. We explored the cellular localization of PhenDC3 , one of the most powerful G4 ligands, by synthesizing two clickable azide and alkyne derivatives (PhenDC3 -alk, PhenDC3 -az) and labeling them in situ with the corresponding Cy5 click partners. A careful comparison of the results obtained for the copper-based CuAAC and copper-free SPAAC methodologies in fixed cells implicated Cu(I) /alkyne intermediates in the nonspecific localization of ligands (and fluorophores) to the nucleoli...
September 11, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28693516/pancreatic-metastasis-from-invasive-pleomorphic-lobular-carcinoma-of-the-breast-a-rare-case-report
#8
Xiangjie Sun, Ke Zuo, Dan Huang, Baohua Yu, Yufan Cheng, Wentao Yang
BACKGROUND: Invasive pleomorphic lobular carcinoma (PLC) is an aggressive subtype of invasive lobular carcinoma of the breast, which has its own histopathological and biological features. The metastatic patterns for PLC are distinct from those of invasive ductal carcinoma. In addition, pancreatic metastasis from PLC is extremely rare. CASE PRESENTATION: We report a rare case of a 48-year-old woman presenting with clinical gastrointestinal symptoms and pancreatic metastasis of PLC...
July 11, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28609676/hepatocellular-differentiation-status-is-characterized-by-distinct-subnuclear-localization-and-form-of-the-chanzyme-trpm7
#9
Adenike Ogunrinde, Robyn D Pereira, Natalie Beaton, D Hung Lam, Christiane Whetstone, Ceredwyn E Hill
The channel-kinase TRPM7 is important for the survival, proliferation, and differentiation, of many cell types. Both plasma membrane channel activity and kinase function are implicated in these roles. Channel activity is greater in less differentiated hepatoma cells compared with non-dividing, terminally differentiated adult hepatocytes, suggesting differences in protein expression and/or localization. We used electrophysiological and immunofluorescence approaches to establish whether hepatocellular differentiation is associated with altered TRPM7 expression...
June 10, 2017: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/28609254/chromosomal-diversity-of-three-species-of-hypostomus-lac%C3%A3-p%C3%A3-de-1803-siluriformes-loricariidae-from-the-paran%C3%A3-river-basin-brazil-a-species-complex-in-hypostomus-ancistroides-reinforced-by-a-zz-zw-sex-chromosome-system
#10
Marcia Cristina de Souza Lara Kamei, Lucas Baumgärtner, Suzana Paiva, Cláudio Henrique Zawadzki, Isabel Cristina Martins-Santos, Ana Luiza de Brito Portela-Castro
Hypostomus shows wide morphological patterns, corroborated by great chromosomal diversity that has suggested the existence of new species, especially from small tributaries. Cytogenetic analysis has contributed to estimate a cryptic diversity providing important data for taxonomic and evolutionary studies. Cytogenetic techniques were carried out on species from a small tributary of Ivaí River, Keller River (upper Paraná River basin): Hypostomus aff. ancistroides, Hypostomus topavae, and Hypostomus aff. hermanni that presented 2n = 68, 80, and 72 chromosomes, respectively...
August 2017: Zebrafish
https://www.readbyqxmd.com/read/28588071/the-rna-helicase-dhx9-establishes-nucleolar-heterochromatin-and-this-activity-is-required-for-embryonic-stem-cell-differentiation
#11
Sergio Leone, Dominik Bär, Coenraad Frederik Slabber, Damian Dalcher, Raffaella Santoro
Long non-coding RNAs (lncRNAs) have been implicated in the regulation of chromatin conformation and epigenetic patterns. lncRNA expression levels are widely taken as an indicator for functional properties. However, the role of RNA processing in modulating distinct features of the same lncRNA is less understood. The establishment of heterochromatin at rRNA genes depends on the processing of IGS-rRNA into pRNA, a reaction that is impaired in embryonic stem cells (ESCs) and activated only upon differentiation...
July 2017: EMBO Reports
https://www.readbyqxmd.com/read/28578939/clinical-significance-of-c-d-box-small-nucleolar-rna-u76-as-an-oncogene-and-a-prognostic-biomarker-in-hepatocellular-carcinoma
#12
Long Wu, Lei Chang, Haitao Wang, Weijie Ma, Qin Peng, Yufeng Yuan
BACKGROUND: Recent evidence has suggested novel roles of small nucleolar RNAs (snoRNAs) in tumorigenicity. However, the roles of C/D box snoRNA U76 (SNORD76) in the development of hepatocellular carcinoma (HCC) remain unknown. Herein, we systematically evaluated dysregulation of snoRNAs in HCC and clarified the biomarker potential and biological significance of SNORD76 in HCC. METHODS: We performed quantitative analyses of the expression of SNORD76 in 66 HCC specimens to compare its expression pattern between tumor tissue and matched non-tumor tissue...
May 31, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28575119/nucleolus-association-of-chromosomal-domains-is-largely-maintained-in-cellular-senescence-despite-massive-nuclear-reorganisation
#13
Stefan Dillinger, Tobias Straub, Attila Németh
Mammalian chromosomes are organized in structural and functional domains of 0.1-10 Mb, which are characterized by high self-association frequencies in the nuclear space and different contact probabilities with nuclear sub-compartments. They exhibit distinct chromatin modification patterns, gene expression levels and replication timing. Recently, nucleolus-associated chromosomal domains (NADs) have been discovered, yet their precise genomic organization and dynamics are still largely unknown. Here, we use nucleolus genomics and single-cell experiments to address these questions in human embryonic fibroblasts during replicative senescence...
2017: PloS One
https://www.readbyqxmd.com/read/28494440/nuclear-architecture-of-mouse-spermatocytes-chromosome-topology-heterochromatin-and-nucleolus
#14
REVIEW
Soledad Berrios
The nuclear organization of spermatocytes in meiotic prophase I is primarily determined by the synaptic organization of the bivalents that are bound by their telomeres to the nuclear envelope and described as arc-shaped trajectories through the 3D nuclear space. However, over this basic meiotic organization, a spermatocyte nuclear architecture arises that is based on higher-ordered patterns of spatial associations among chromosomal domains from different bivalents that are conditioned by the individual characteristics of chromosomes and the opportunity for interactions between their domains...
2017: Cytogenetic and Genome Research
https://www.readbyqxmd.com/read/28483825/replication-of-ribosomal-dna-in-arabidopsis-occurs-both-inside-and-outside-of-the-nucleolus-during-s-phase-progression
#15
Martina Dvořáčková, Berta Raposo, Petr Matula, Joerg Fuchs, Veit Schubert, Vratislav Peška, Bénédicte Desvoyes, Crisanto Gutierrez, Jiří Fajkus
Ribosomal RNA genes (rDNA) have been used as valuable experimental systems in numerous studies. Here we focus on elucidating the spatio-temporal organisation of rDNA replication in Arabidopsis thaliana. To determine the subnuclear distribution of rDNA and the progression of its replication during S phase, we apply a 5-ethynyl-2'-deoxyuridine (EdU) labelling, fluorescence-activated cell sorting, fluorescence in situ hybridization, and structured illumination microscopy. We show that rDNA is replicated inside and outside the nucleolus where active transcription occurs at the same time...
May 8, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28468917/the-circadian-dynamics-of-small-nucleolar-rna-in-the-mouse-liver
#16
Stuart Aitken, Colin A Semple
The circadian regulation of gene expression allows plants and animals to anticipate predictable environmental changes. While the influence of the circadian clock has recently been shown to extend to ribosome biogenesis, the dynamics and regulation of the many small nucleolar RNA that are required in pre-ribosomal RNA folding and modification are unknown. Using a novel computational method, we show that 18S and 28S pre-rRNA are subject to circadian regulation in a nuclear RNA sequencing time course. A population of snoRNA with circadian expression is identified that is functionally associated with rRNA modification...
May 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28467309/automated-antinuclear-immunofluorescence-antibody-analysis-is-a-reliable-approach-in-routine-clinical-laboratories
#17
Bing Zheng, Enling Li, Haoming Zhu, Jingbo Lu, Xinming Shi, Jie Zhang, Min Li
BACKGROUND: Indirect immunofluorescence (IIF) assays are recommended as the gold standard method for the detection of antinuclear antibodies (ANAs). This study aimed to investigate the reliability of an automated system. METHODS: We compared 3745 serum samples using NOVA View archived images with manual analysis via microscopy. A custom cutoff value was established to distinguish ANA titers and was validated in two clinical laboratories. The automatic ANA pattern recognition system was evaluated, and all ANA-positive sera were subjected to two commercial ANA IIF kits to compare the consistency of the pattern interpretation results...
October 26, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28465432/different-phosphoisoforms-of-rna-polymerase-ii-engage-the-rtt103-termination-factor-in-a-structurally-analogous-manner
#18
Corey M Nemec, Fan Yang, Joshua M Gilmore, Corinna Hintermair, Yi-Hsuan Ho, Sandra C Tseng, Martin Heidemann, Ying Zhang, Laurence Florens, Audrey P Gasch, Dirk Eick, Michael P Washburn, Gabriele Varani, Aseem Z Ansari
The carboxyl-terminal domain (CTD) of the largest subunit of RNA polymerase II (Pol II) orchestrates dynamic recruitment of specific cellular machines during different stages of transcription. Signature phosphorylation patterns of Y1S2P3T4S5P6S7 heptapeptide repeats of the CTD engage specific "readers." Whereas phospho-Ser5 and phospho-Ser2 marks are ubiquitous, phospho-Thr4 is reported to only impact specific genes. Here, we identify a role for phospho-Thr4 in transcription termination at noncoding small nucleolar RNA (snoRNA) genes...
May 16, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28456843/dynamic-nucleolar-activity-in-wheat%C3%A2-%C3%A3-%C3%A2-aegilops-hybrids-evidence-of-c-genome-dominance
#19
Ghader Mirzaghaderi, Zinat Abdolmalaki, Mohsen Zohouri, Zeinab Moradi, Annaliese S Mason
NOR loci of C-subgenome are dominant in wheat × Aegilops interspecific hybrids, which may have evolutionary implications for wheat group genome dynamics and evolution. After interspecific hybridisation, some genes are often expressed from only one of the progenitor species, shaping subsequent allopolyploid genome evolution processes. A well-known example is nucleolar dominance, i.e. the formation of cell nucleoli from chromosomes of only one parental species. We studied nucleolar organizing regions (NORs) in diploid Aegilops markgrafii (syn: Ae...
August 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28282787/long-non-coding-rna-snhg20-predicts-a-poor-prognosis-for-hcc-and-promotes-cell-invasion-by-regulating-the-epithelial-to-mesenchymal-transition
#20
Jinxia Liu, Cuihua Lu, Mingbing Xiao, Feng Jiang, Lishuai Qu, Runzhou Ni
BACKGROUND: Recently, Accumulating evidence indicates that long noncoding RNAs (lncRNAs) have been shown to have critical regulatory roles in human tumor biology and development. However, the expression pattern and biological function of lncRNA small nucleolar RNA host gene 20 (SNHG20) in hepatocellular carcinoma (HCC) remains largely unknown. METHODS: The expression of SNHG20 in 96 paired HCC tissues and cell lines were detected by quantitative real-time PCR (qRT-PCR) analysis...
May 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
keyword
keyword
114788
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"