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https://www.readbyqxmd.com/read/27926994/microvessels-of-the-heart-formation-regeneration-and-dysfunction
#1
Ioakim Spyridopoulos, Helen M Arthur
This issue of Microcirculation focusses on the special topic of "microvessels of the heart" and contains five state-of-the-art reviews and one expert article that reflect current efforts to address the major gaps in our understanding of these key microvessels. In the adult heart, most attention until recently (especially among the clinical cardiology community) has been given to the main coronary arteries, which are the culprit vessels in patients with coronary artery disease, including its most serious manifestation, acute myocardial infarction (MI)...
December 7, 2016: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/27926637/pigmentation-and-pregnancy-knowing-what-is-normal
#2
Amy Kalowitz Bieber, Kathryn J Martires, Jennifer A Stein, Jane M Grant-Kels, Marcia S Driscoll, Miriam Keltz Pomeranz
Changes in melanocytic nevi during pregnancy are frequently attributed to the new hormonal milieu and are dismissed without concern for malignancy. Recent studies suggest that pregnancy itself does not induce significant change in nevi, and delays in the assessment of changing moles may contribute to the often more advanced nature of melanomas diagnosed during or soon after pregnancy. Nevi on the breasts and abdomen can grow as a result of skin expansion, but studies have found no significant changes in nevi located in more stable areas such as the back or lower extremities...
December 2, 2016: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27926523/long-non-coding-rna-neat1-overexpression-is-associated-with-poor-prognosis-in-cancer-patients-a-systematic-review-and-meta-analysis
#3
Chao Yang, Zhuo Li, Yajun Li, Rui Xu, Yongfeng Wang, Yu Tian, Wei Chen
OBJECTIVES: Long non-coding RNAs (lncRNAs) are playing important roles in cancer progression and metastasis. Recent studies have demonstrated that the lncRNA, nuclear paraspeckle assembly transcript 1 (NEAT1), was aberrantly up-regulated in various types of cancers and was reported to be associated with unfavorable prognosis in cancer patients. This study examined the relationship between NEAT1 and relevant clinical outcomes. RESULTS: A total of 1354 patients from 11 eligible studies were included in the meta-analysis...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27926382/prediction-of-anti-cancer-drug-response-by-kernelized-multi-task-learning
#4
Mehmet Tan
MOTIVATION: Chemotherapy or targeted therapy are two of the main treatment options for many types of cancer. Due to the heterogeneous nature of cancer, the success of the therapeutic agents differs among patients. In this sense, determination of chemotherapeutic response of the malign cells is essential for establishing a personalized treatment protocol and designing new drugs. With the recent technological advances in producing large amounts of pharmacogenomic data, in silico methods have become important tools to achieve this aim...
October 2016: Artificial Intelligence in Medicine
https://www.readbyqxmd.com/read/27926367/molecular-genetics-of-pancreatic-neoplasms
#5
REVIEW
Waki Hosoda, Laura D Wood
Pancreatic neoplasms have a wide range of histologic types with distinct clinical outcomes. Recent advances in high-throughput sequencing technologies have greatly deepened our understanding of pancreatic neoplasms. Now, the exomes of major histologic types of pancreatic neoplasms have been sequenced, and their genetic landscapes have been revealed. This article reviews the molecular changes underlying pancreatic neoplasms, with a special focus on the genetic changes that characterize the histologic types of pancreatic neoplasms...
December 2016: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/27926358/recent-advances-in-pancreatic-cancer-surgery-of-relevance-to-the-practicing-pathologist
#6
REVIEW
Lennart B van Rijssen, Steffi J E Rombouts, Marieke S Walma, Jantien A Vogel, Johanna A Tol, Isaac Q Molenaar, Casper H J van Eijck, Joanne Verheij, Marc J van de Vijver, Olivier R C Busch, Marc G H Besselink
Recent advances in pancreatic surgery have the potential to improve outcomes for patients with pancreatic cancer. We address 3 new, trending topics in pancreatic surgery that are of relevance to the pathologist. First, increasing awareness of the prognostic impact of intraoperatively detected extraregional and regional lymph node metastases and the international consensus definition on lymph node sampling and reporting. Second, neoadjuvant chemotherapy, which is capable of changing 10% to 20% of initially unresectable, to resectable disease...
December 2016: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/27925785/accelerating-scientific-advancement-for-pediatric-rare-lung-disease-research-report-from-a-national-institutes-of-health-nhlbi-workshop-september-3-and-4-2015
#7
Lisa R Young, Bruce C Trapnell, Kenneth D Mandl, Daniel T Swarr, Jennifer A Wambach, Carol J Blaisdell
Pediatric rare lung disease (PRLD) is a term that refers to a heterogeneous group of rare disorders in children. In recent years, this field has experienced significant progress marked by scientific discoveries, multicenter and interdisciplinary collaborations, and efforts of patient advocates. Although genetic mechanisms underlie many PRLDs, pathogenesis remains uncertain for many of these disorders. Furthermore, epidemiology and natural history are insufficiently defined, and therapies are limited. To develop strategies to accelerate scientific advancement for PRLD research, the NHLBI of the National Institutes of Health convened a strategic planning workshop on September 3 and 4, 2015...
December 2016: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/27925773/post-translational-modifications-of-lipid-activated-nuclear-receptors-focus-on-metabolism
#8
Natalia Becares Salles, Matthew C Gage, Inés Pineda-Torra
Post-translational modifications (PTM) occur to nearly all proteins, are catalysed by specific enzymes and are subjected to tight regulation. They have been shown to be a powerful means by which the function of proteins can be modified resulting in diverse effects. Technological advances such as the increased sensitivity of mass spectrometry-based techniques and availability of mutant animal models have enhanced our understanding of the complexities of their regulation and the effect they have on protein function...
December 7, 2016: Endocrinology
https://www.readbyqxmd.com/read/27925398/cell-based-biohybrid-drug-delivery-systems-the-best-of-the-synthetic-and-natural-worlds
#9
Samagya Banskota, Parisa Yousefpour, Ashutosh Chilkoti
The goal of drug delivery is to deliver therapeutics to the site of disease while reducing unwanted side effects. In recent years, a diverse variety of synthetic nano and microparticles have been developed as drug delivery systems. The success of these systems for drug delivery lies in their ability to overcome biological barriers such as the blood-brain barrier, to evade immune clearance and avoid nonspecific biodistribution. This Review provides an overview of recent advances in the design of biohybrid drug delivery systems, which combine cells with synthetic systems to overcome some of these biological hurdles...
December 7, 2016: Macromolecular Bioscience
https://www.readbyqxmd.com/read/27925369/conventional-and-unconventional-ubiquitination-in-plant-immunity
#10
REVIEW
Bangjun Zhou, Lirong Zeng
Ubiquitination is one of the most abundant types of protein post-translational modifications (PTMs) in plant cells. The importance of ubiquitination in the regulation of many aspects of plant immunity has been increasingly appreciated in recent years. Most of the studies linking ubiquitination to the plant immune system, however, have been focused on the E3 ubiquitin ligases and the conventional ubiquitination that leads to degradation of the substrate proteins by the 26S proteasome. By contrast, our knowledge about the role of unconventional ubiquitination that often plays non-degradative, regulatory role remains a significant gap...
December 7, 2016: Molecular Plant Pathology
https://www.readbyqxmd.com/read/27925264/three-intronic-lncrnas-with-monoallelic-expression-derived-from-the-meg8-gene-in-cattle
#11
W Yang, D Li, G Wang, C Zhang, M Zhang, W Zhang, S Li
The field of long noncoding RNA (lncRNA) research has been rapidly advancing in recent years. Antisense lncRNAs, intergenetic lncRNAs and enhancer lncRNAs can regulate genomic imprinting, which leads to parent-origin-specific monoalletic expression of genes. However, the function of intronic ncRNAs in genomic imprinting remains unclear. Previously, we obtained the cDNA sequence of cattle MEG8 gene, which is located in the DLK1-DIO3 imprinted clusters of cattle chromosome 21. In this study, we undertook a systematic search for transcripts mapping to the MEG8 intronic region and identified three novel lncRNAs, named MEG8 intronic RNA 1 (MEG8-IT1), MEG8 intronic RNA 2 (MEG8-IT2) and MEG8 intronic RNA 3 (MEG8-IT3) according to the GENCODE annotated bibliography...
December 7, 2016: Animal Genetics
https://www.readbyqxmd.com/read/27924978/astaxanthin-in-cardiovascular-health-and-disease-mechanisms-of-action-therapeutic-merits-and-knowledge-gaps
#12
REVIEW
Francesco Visioli, Christian Artaria
Cardiovascular disease is the main contributor to morbidity and mortality worldwide. Based on its unique chemical features, the xanthophyll carotenoid astaxanthin is being proposed as a suitable preventive and therapeutic agent in cardiovascular disease. This review focuses on recent advances in astaxanthin research relevant to cardiovascular health and disease, i.e. its direct antioxidant, indirect antioxidant, anti-inflammatory, anti-hypertensive, anti-diabetic, renoprotective, lipid-lowering and anti-atherosclerotic activities in vitro and in vivo...
December 7, 2016: Food & Function
https://www.readbyqxmd.com/read/27924822/il-21-dependent-expansion-of-memory-like-nk-cells-enhances-protective-immune-responses-against-mycobacterium-tuberculosis
#13
S Venkatasubramanian, S Cheekatla, P Paidipally, D Tripathi, E Welch, A R Tvinnereim, R Nurieva, R Vankayalapati
Natural killer (NK) cells are traditionally considered as innate cells, but recent studies suggest that NK cells can distinguish antigens, and that memory NK cells expand and protect against viral pathogens. Limited information is available about the mechanisms involved in memory-like NK cell expansion, and their role in bacterial infections and vaccine-induced protective immune responses. In the current study, using a mouse model of tuberculosis (TB) infection, we found that interferon-gamma producing CD3-NKp46+CD27+KLRG1+ memory-like NK cells develop during Bacille Calmette-Guérin vaccination, expand, and provide protection against challenge with Mycobacterium tuberculosis (M...
December 7, 2016: Mucosal Immunology
https://www.readbyqxmd.com/read/27924593/analysis-of-16s-rrna-gene-amplicon-sequences-using-the-qiime-software-package
#14
Blair Lawley, Gerald W Tannock
The study of microbial ecology has undergone a paradigm shift in recent years, with rapid advances in molecular and bioinformatic tools allowing researchers with wide-ranging interests and backgrounds access to community profiling methods. While these advances have undoubtedly led to exciting new understanding of many systems, the array of protocols available and the idiosyncrasies of particular approaches can lead to confusion or, at worst, erroneous interpretation of results. Here, we describe a workflow from raw 16S rRNA gene amplicon sequence data, generated on an Illumina MiSeq instrument, to microbial community taxonomy profiles and basic diversity measures...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27924575/genome-wide-analysis-of-ras-erk-signaling-targets
#15
Joshua P Plotnik, Peter C Hollenhorst
Identifying gene expression changes mediated by signaling pathways is necessary to determine mechanisms that cause phenotypic change. Recent advances in next-generation sequencing and informatic pipelines have streamlined the ability for laboratories to create and analyze transcriptomic data. Here, we describe the preparation of samples and transcriptomic analysis in order to determine gene expression programs regulated by RAS/ERK signaling.
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27924353/-the-old-man-and-the-i-sea-u-essay-on-faith-fate-and-evidence-after-the-manner-of-hemingway
#16
K Lewandowski, R H Bartlett
Robert Bartlett, emeritus Professor of surgery at the University of Michigan in Ann Arbor, USA, transformed classical works of world literature (Charles Dickens: A Christmas Carol, Lewis Carroll: Alice in Wonderland) into teaching aids for advanced training in intensive care medicine. He recently turned his hand to the well-known work of Ernest Hemingway: the Nobel Prize winning novel The Old Man and the Sea. Subsequent to Robert Bartlett's essay this article provides background information and comments on the current problems in modern intensive care medicine addressed in his essay...
December 6, 2016: Der Anaesthesist
https://www.readbyqxmd.com/read/27924316/discovery-of-febi2
#17
James P S Walsh, Samantha M Clarke, Yue Meng, Steven D Jacobsen, Danna E Freedman
Recent advances in high-pressure techniques offer chemists access to vast regions of uncharted synthetic phase space, expanding our experimental reach to pressures comparable to the core of the Earth. These newfound capabilities enable us to revisit simple binary systems in search of compounds that for decades have remained elusive. The most tantalizing of these targets are systems in which the two elements in question do not interact even as molten liquids-so-called immiscible systems. As a prominent example, immiscibility between iron and bismuth is so severe that no material containing Fe-Bi bonds is known to exist...
November 23, 2016: ACS Central Science
https://www.readbyqxmd.com/read/27924262/mass-spectrometric-analysis-of-protein-ligand-interactions
#18
Kentaro Ishii, Masanori Noda, Susumu Uchiyama
The interactions of small molecules with proteins (protein-ligand interactions) mediate various biological phenomena including signal transduction and protein transcription and translation. Synthetic compounds such as drugs can also bind to target proteins, leading to the inhibition of protein-ligand interactions. These interactions typically accompany association-dissociation equilibrium according to the free energy difference between free and bound states; therefore, the quantitative biophysical analysis of the interactions, which uncovers the stoichiometry and dissociation constant, is important for understanding biological reactions as well as for rational drug development...
2016: Biophysics and Physicobiology
https://www.readbyqxmd.com/read/27924180/magnetic-resonance-spectroscopy-and-single-photon-emission-computed-tomography-in-the-evaluation-of-cerebral-tumors-a-case-report
#19
Ioannis Siasios, Varvara Valotassiou, Eftychia Kapsalaki, Ioannis Tsougos, Panagiotis Georgoulias, Aggeliki Fotiadou, Maria Ioannou, Georgios Koukoulis, Vassilios Dimopoulos, Kostas Fountas
In their daily clinical practice, physicians have to confront diagnostic dilemmas which cannot be resolved by the application of only one imaging technique. In this case report, we present a 66-year-old woman who was admitted to our institution for the surgical resection of a recently diagnosed brain tumor. The patient had a history of epileptic seizures and was hospitalized in the past for anti-phospholipid syndrome related to a non-Hodgkin lymphoma in remission. Magnetic resonance imaging (MRI) examination revealed an enhancing right parasagittal lesion with significant edema suggestive of a high grade glioma...
January 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/27924075/histone-variants-on-the-move-substrates-for-chromatin-dynamics
#20
Paul B Talbert, Steven Henikoff
Most histones are assembled into nucleosomes behind the replication fork to package newly synthesized DNA. By contrast, histone variants, which are encoded by separate genes, are typically incorporated throughout the cell cycle. Histone variants can profoundly change chromatin properties, which in turn affect DNA replication and repair, transcription, and chromosome packaging and segregation. Recent advances in the study of histone replacement have elucidated the dynamic processes by which particular histone variants become substrates of histone chaperones, ATP-dependent chromatin remodellers and histone-modifying enzymes...
December 7, 2016: Nature Reviews. Molecular Cell Biology
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