keyword
MENU ▼
Read by QxMD icon Read
search

Signature

keyword
https://www.readbyqxmd.com/read/29166751/is-there-a-glucose-metabolic-signature-of-spreading-tdp-43-pathology-in-amyotrophic-lateral-sclerosis
#1
Donatienne van Weehaeghe, Jenny Ceccarini, Stefanie M Willekens, Joke de Vocht, Philip van Damme, Koen van Laere
BACKGROUND: Recently, four neuropathological stages of amyotrophic lateral sclerosis (ALS) with spreading of transactive response DNA-Binding Protein-43 pathology were described. Although 18F-FDG PET has been useful in diagnosis and prognosis of ALS patients, in vivo disease staging using glucose metabolic patterns across the different ALS stages have not been attempted so far. In this study, we investigated whether the discriminant brain regions of the neuropathological stage model can be translated to metabolic patterns for in vivo staging of ALS...
November 22, 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29166639/apobec3a-expression-in-penile-squamous-cell-carcinoma
#2
Martina Heller, Elena-Sophie Prigge, Adam Kaczorowski, Magnus von Knebel Doeberitz, Markus Hohenfellner, Stefan Duensing
BACKGROUND: APOBECs (apolipoprotein B mRNA-editing catalytic polypeptides) are cytidine deaminases that have been implicated in the host defense against viruses by blocking viral replication. They have also been shown to play a role in genome hypermutation in several human cancers. An APOBEC3 hypermutation signature has been discovered in cervical cancer, which is intimately associated with infection by high-risk human papillomaviruses (HPVs). At the same time, HPV genomes themselves are subject to DNA editing by APOBECs...
November 23, 2017: Pathobiology: Journal of Immunopathology, Molecular and Cellular Biology
https://www.readbyqxmd.com/read/29166609/gpr56-adgrg1-inhibits-mesenchymal-differentiation-and-radioresistance-in-glioblastoma
#3
Marta Moreno, Leire Pedrosa, Laia Paré, Estela Pineda, Leire Bejarano, Josefina Martínez, Veerakumar Balasubramaniyan, Ravesanker Ezhilarasan, Naveen Kallarackal, Sung-Hak Kim, Jia Wang, Alessandra Audia, Siobhan Conroy, Mercedes Marin, Teresa Ribalta, Teresa Pujol, Antoni Herreros, Avelina Tortosa, Helena Mira, Marta M Alonso, Candelaria Gómez-Manzano, Francesc Graus, Erik P Sulman, Xianhua Piao, Ichiro Nakano, Aleix Prat, Krishna P Bhat, Núria de la Iglesia
A mesenchymal transition occurs both during the natural evolution of glioblastoma (GBM) and in response to therapy. Here, we report that the adhesion G-protein-coupled receptor, GPR56/ADGRG1, inhibits GBM mesenchymal differentiation and radioresistance. GPR56 is enriched in proneural and classical GBMs and is lost during their transition toward a mesenchymal subtype. GPR56 loss of function promotes mesenchymal differentiation and radioresistance of glioma initiating cells both in vitro and in vivo. Accordingly, a low GPR56-associated signature is prognostic of a poor outcome in GBM patients even within non-G-CIMP GBMs...
November 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/29166589/granulocyte-monocyte-progenitors-and-monocyte-dendritic-cell-progenitors-independently-produce-functionally-distinct-monocytes
#4
Alberto Yáñez, Simon G Coetzee, Andre Olsson, David E Muench, Benjamin P Berman, Dennis J Hazelett, Nathan Salomonis, H Leighton Grimes, Helen S Goodridge
Granulocyte-monocyte progenitors (GMPs) and monocyte-dendritic cell progenitors (MDPs) produce monocytes during homeostasis and in response to increased demand during infection. Both progenitor populations are thought to derive from common myeloid progenitors (CMPs), and a hierarchical relationship (CMP-GMP-MDP-monocyte) is presumed to underlie monocyte differentiation. Here, however, we demonstrate that mouse MDPs arose from CMPs independently of GMPs, and that GMPs and MDPs produced monocytes via similar but distinct monocyte-committed progenitors...
November 21, 2017: Immunity
https://www.readbyqxmd.com/read/29166404/species-specific-signatures-of-the-microbiome-from-camponotus-and-colobopsis-ants-across-developmental-stages
#5
Manuela Oliveira Ramalho, Odair Correa Bueno, Corrie Saux Moreau
Symbiotic relationships between hosts and bacteria are common in nature, and these may be responsible for the evolutionary success of various groups of animals. Among ants, these associations have been well studied in some genera of the Camponotini, but several questions remain regarding the generality of the previous findings across all the members of this ant tribe and if bacterial communities change across development in these hosts. This study is the first to characterize the bacterial community associated with a colony of the recently recognized genus Colobopsis and three colonies of Camponotus (two distinct species) and show how different the composition of the bacterial community is when compared across the different genera...
2017: PloS One
https://www.readbyqxmd.com/read/29166164/a-physiological-signature-of-the-cost-of-reproduction-associated-with-parental-care
#6
Melinda A Fowler, Tony D Williams
Costs of reproduction are an integral and long-standing component of life-history theory, but we still know relatively little about the specific physiological mechanisms underlying these trade-offs. We experimentally manipulated workload during parental care in female European starlings (Sturnus vulgaris) using attachment of radios and/or wing clipping and assessed measures of workload, current breeding productivity, future fecundity, and survival (local return rate) in relation to treatment. Females with wing clipping and radio attachment paid a clear cost of reproduction compared with all other treatment groups: they had lower future fecundity and lower return rates despite having lower current breeding productivity...
December 2017: American Naturalist
https://www.readbyqxmd.com/read/29166019/femtosecond-raman-microscopy-reveals-structural-dynamics-leading-to-triplet-separation-in-rubrene-singlet-fission
#7
Kajari Bera, Christopher J Douglas, Renee R Frontiera
Singlet fission generates multiple excitons from a single photon, which in theory can result in solar cell efficiencies with values above the Shockley-Queisser limit. Understanding the molecular structural dynamics during singlet fission will help to fabricate efficient organic photovoltaic devices. Here we use femtosecond stimulated Raman spectroscopy to reveal the structural evolution during the triplet separation in rubrene. We observe vibrational signatures of the correlated triplet pair, as well as shifting of the vibrational frequencies of the 1430 and 1542 cm(-1) excited state modes, which increase by more than 25 cm(-1) in 5 ps...
November 22, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29165594/revisiting-fis-fst-wahlund-effects-and-null-alleles
#8
Thierry De Meeûs
Null alleles and Wahlund effects are well known causes of heterozygote deficits in empirical population genetics studies as compared to Hardy-Weinberg genotypic expectations. Some authors have theoretically studied the relationship of Wright's FIS computed from subsamples displaying a Wahlund effect and FST before the Wahlund effect, as can occasionally be obtained from populations of long-lived organisms. In the two subsample case, a positive relationship between these two parameters across loci would represent a signature of Wahlund effects...
November 20, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/29165439/proteomic-signatures-differentiating-bacillus-anthracis-sterne-sporulation-on-soil-relative-to-laboratory-media
#9
D S Wunschel, J R Hutchison, B L Deatherage Kaiser, E D Merkley, B M Hess, A Lin, M G Warner
The process of sporulation is vital for the stability and infectious cycle of Bacillus anthracis. The spore is the infectious form of the organism and therefore relevant to biodefense. While the morphological and molecular events occurring during sporulation have been well studied, the influence of growth medium and temperature on the proteins expressed in sporulated cultures is not well understood. Understanding the features of B. anthracis sporulation specific to natural vs. laboratory production will address an important question in microbial forensics...
November 22, 2017: Analyst
https://www.readbyqxmd.com/read/29165314/towards-natural-mimetics-of-metformin-and-rapamycin
#10
Alexander Aliper, Leslie Jellen, Franco Cortese, Artem Artemov, Darla Karpinsky-Semper, Alexey Moskalev, Andrew G Swick, Alex Zhavoronkov
Aging is now at the forefront of major challenges faced globally, creating an immediate need for safe, widescale interventions to reduce the burden of chronic disease and extend human healthspan. Metformin and rapamycin are two FDA-approved mTOR inhibitors proposed for this purpose, exhibiting significant anti-cancer and anti-aging properties beyond their current clinical applications. However, each faces issues with approval for off-label, prophylactic use due to adverse effects. Here, we initiate an effort to identify nutraceuticals-safer, naturally-occurring compounds-that mimic the anti-aging effects of metformin and rapamycin without adverse effects...
November 15, 2017: Aging
https://www.readbyqxmd.com/read/29165287/quantitative-evaluation-of-head-and-neck-cancer-treatment-related-dysphagia-in-the-development-of-a-personalized-treatment-deintensification-paradigm
#11
Harry Quon, Xuan Hui, Zhi Cheng, Scott Robertson, Luke Peng, Michael Bowers, Joseph Moore, Amanda Choflet, Alex Thompson, Mariah Muse, Ana Kiess, Brandi Page, Carole Fakhry, Christine Gourin, Jolyne O'Hare, Peter Graham, Michal Szczesniak, Julia Maclean, Ian Cook, Todd McNutt
PURPOSE: To test the hypothesis that quantifying swallow function with multiple patient-reported outcome (PRO) instruments is an important strategy to yield insights in the development of personalized deintensified therapies seeking to reduce the risk of head and neck cancer (HNC) treatment-related dysphagia (HNCTD). METHODS AND MATERIALS: Irradiated HNC subjects seen in follow-up care (April 2015 to December 2015) who prospectively completed the Sydney Swallow Questionnaire (SSQ) and the MD Anderson Dysphagia Inventory (MDADI) concurrently on the web interface to our Oncospace database were evaluated...
December 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29164972/molecular-subtyping-of-breast-cancer-improves-identification-of-both-high-and-low-risk-patients
#12
Maria Rossing, Olga Østrup, Wiktor W Majewski, Savvas Kinalis, Maj-Britt Jensen, Ann Knoop, Niels Kroman, Maj-Lis Talman, Thomas V O Hansen, Bent Ejlertsen, Finn C Nielsen
BACKGROUND: Transcriptome analysis enables classification of breast tumors into molecular subtypes that correlate with prognosis and effect of therapy. We evaluated the clinical benefits of molecular subtyping compared to our current diagnostic practice. MATERIALS AND METHODS: Molecular subtyping was performed on a consecutive and unselected series of 524 tumors from women with primary breast cancer (n = 508). Tumors were classified by the 256 gene expression signature (CIT) and compared to conventional immunohistochemistry (IHC) procedures...
November 22, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/29164968/characterization-of-basal-like-subtype-in-a-danish-consecutive-primary-breast-cancer-cohort
#13
Savvas Kinalis, Finn Cilius Nielsen, Maj-Lis Talman, Bent Ejlertsen, Maria Rossing
BACKGROUND: Transcriptome analysis enables classification of breast tumors into molecular subtypes. BRCA1/2 predisposed patients are more likely to suffer from a basal-like subtype and this group of patients displays a more distinct phenotype and genotype. Hence, in-depth characterization of this separate entity is needed. MATERIAL AND METHODS: Molecular subtyping was performed on a consecutive and unselected series of 1560 tumors from patients with primary breast cancer...
November 22, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/29164900/theory-of-transient-excited-state-absorptions-in-pentacene-and-derivatives-the-triplet-triplet-biexciton-versus-free-triplets
#14
Souratosh Khan, Sumit Mazumdar
Recent experiments in several singlet-fission materials have found that the triplet-triplet biexciton is either the primary product of photoexcitation, or has much longer lifetime than believed until now. It thus becomes essential to determine the difference in the spectroscopic signatures of the bound triplet-triplet and free triplets to distinguish between them optically. We report calculations of excited state absorptions (ESAs) from the singlet and triplet excitons and from the triplet-triplet biexciton for pentacene crystal with the herringbone structure and for nanocrystals of bis(triisopropylsilylethynyl) (TIPS)-pentacene...
November 22, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29164867/is-traffic-still-an-important-emitter-of-mono-aromatic-organic-compounds-in-european-urban-areas
#15
Agnès Borbon, Anne Boynard, Therese Salameh, Alexia Baudic, Valerie Gros, Julie Gauduin, Olivier Perrussel, Cyril Pallares
Trends of long-term observations and emission inventories suggest that traffic emissions will no longer dominate the concentrations of mono-aromatic compounds (i.e. TEX - Toluene, Xylenes and Ethylbenzene) in European urban areas. But the split limit between traffic and other emission sector contributions such as solvent use remains tenuous. Here long-term observations of an extensive set of hydrocarbons, including TEX, at traffic and urban background sites in London, Paris and Strasbourg were combined to estimate the relative importance of traffic emissions on TEX in every city...
November 22, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29164593/immune-correlates-of-clinical-outcome-in-melanoma
#16
REVIEW
Graham Pawelec
Melanoma has long been recognized as a potentially immunogenic tumour, but only recently has it become clear that the reason for this resides in its many UV-induced mutations and expression of multiple autoantigens which can be targeted by the immune system. The first successful applications of immune-based treatments included passive immunotherapy using high-dose IL-2 and/or adoptive transfer of NK-cells, as well as active immunotherapy using whole cell-derived or peptide vaccines. In the intervening decades, it has become clear that these approaches can lead to durable responses in stage III/IV melanoma, and even to functional cures - but only in a vanishingly small fraction of patients...
November 21, 2017: Immunology
https://www.readbyqxmd.com/read/29164057/diagnostic-and-prognostic-significance-of-methionine-uptake-and-methionine-positron-emission-tomography-imaging-in-gliomas
#17
REVIEW
Kamalakannan Palanichamy, Arnab Chakravarti
The present most common image diagnostic tracer in clinical practice for glioma is (18)F-fluorodeoxyglucose (FDG) positron emission tomography (PET) for brain tumors diagnosis and prognosis. PET is a promising molecular imaging technique, which provides real-time information on the metabolic behavior of the tracer. The diffusive nature of glioblastoma (GBM) and heterogeneity often make the radiographic detection by FDG-PET inaccurate, and there is no gold standard. FDG-PET often leads to several controversies in making clinical decisions due to their uptake by normal surrounding tissues, and pose a challenge in delineating treatment-induced necrosis, edema, inflammation, and pseudoprogression...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/29163787/neural-crest-derived-progenitor-cells-contribute-to-tumor-stroma-and-aggressiveness-in-stage-4-m-neuroblastoma
#18
Pedro Linares-Clemente, Diana Aguilar-Morante, Ismael Rodríguez-Prieto, Gema Ramírez, Carmen de Torres, Vicente Santamaría, Diego Pascual-Vaca, Ana Colmenero-Repiso, Francisco M Vega, Jaume Mora, Rosa Cabello, Catalina Márquez, Eloy Rivas, Ricardo Pardal
Pediatric tumors arise upon oncogenic transformation of stem/progenitor cells during embryonic development. Given this scenario, the existence of non-tumorigenic stem cells included within the aberrant tumoral niche, with a potential role in tumor biology, is an intriguing and unstudied possibility. Here, we describe the presence and function of non-tumorigenic neural crest-derived progenitor cells in aggressive neuroblastoma (NB) tumors. These cells differentiate into neural crest typical mesectodermal derivatives, giving rise to tumor stroma and promoting proliferation and tumor aggressiveness...
October 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/29163774/integrative-analysis-of-novel-hypomethylation-and-gene-expression-signatures-in-glioblastomas
#19
Anan Yin, Amandine Etcheverry, Yalong He, Marc Aubry, Jill Barnholtz-Sloan, Luhua Zhang, Xinggang Mao, Weijun Chen, Bolin Liu, Wei Zhang, Jean Mosser, Xiang Zhang
Molecular and clinical heterogeneity critically hinders better treatment outcome for glioblastomas (GBMs); integrative analysis of genomic and epigenomic data may provide useful information for improving personalized medicine. By applying training-validation approach, we identified a novel hypomethylation signature comprising of three CpGs at non-CpG island (CGI) open sea regions for GBMs. The hypomethylation signature consistently predicted poor prognosis of GBMs in a series of discovery and validation datasets...
October 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/29163495/human-cd141-dendritic-cell-and-cd1c-dendritic-cell-undergo-concordant-early-genetic-programming-after-activation-in-humanized-mice-in-vivo
#20
Yoshihito Minoda, Isaac Virshup, Ingrid Leal Rojas, Oscar Haigh, Yide Wong, John J Miles, Christine A Wells, Kristen J Radford
Human immune cell subsets develop in immunodeficient mice following reconstitution with human CD34(+) hematopoietic stem cells. These "humanized" mice are useful models to study human immunology and human-tropic infections, autoimmunity, and cancer. However, some human immune cell subsets are unable to fully develop or acquire full functional capacity due to a lack of cross-reactivity of many growth factors and cytokines between species. Conventional dendritic cells (cDCs) in mice are categorized into cDC1, which mediate T helper (Th)1 and CD8(+) T cell responses, and cDC2, which mediate Th2 and Th17 responses...
2017: Frontiers in Immunology
keyword
keyword
3543
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"