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https://www.readbyqxmd.com/read/28731467/uncultivated-microbes-in-need-of-their-own-taxonomy
#1
Konstantinos T Konstantinidis, Ramon Rosselló-Móra, Rudolf Amann
The great majority of microbial species remains uncultured, severely limiting their taxonomic characterization and thus communication among scientists. Although Candidatus was devised as a provisional category to classify uncultured taxa, it has not been widely accepted owing to technical limitations and lack of priority of Candidatus names in the official nomenclature. High-throughput sequencing provides the potential for data-rich taxonomic descriptions of uncultivated microbes, comparable in quality to those of cultured organisms...
July 21, 2017: ISME Journal
https://www.readbyqxmd.com/read/28730761/tumor-infiltrating-lymphocytes-as-a-prognostic-factor-in-malignant-melanoma-review-of-the-literature
#2
Vlad A Gata, Cosmin I Lisencu, Catalin I Vlad, Doina Piciu, Alexandru Irimie, Patriciu Achimas-Cadariu
Malignant melanoma represents the major cause of mortality among skin cancers, with increasing incidence and mortality rates worldwide. Despite the numerous public health campaigns and the efforts undertaken in the last decade regarding the establishment of a rapid diagnostic and an efficient treatment for these patients, the long-term prognosis has not been significantly improved. Thus, numerous studies were conducted in order to establish a more accurate prognosis, tumor infiltrating lymphocytes (TILs) being considered in many studies as independent prognostic factors of lymph node metastasis and overall survival in patients with melanoma...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28730684/chest-wall-lymphomas-fine-needle-aspiration-cytodiagnosis-and-review-of-the-literature
#3
D K Das, S K Pathan, S K M Al-Waheeb, A E Ali, M Joneja, M G Al-Kanderi, B John, M K Mallik
OBJECTIVE: Compared to other chest wall malignancies, lymphoma is a common disease. However, published literature on a series of lymphoma cases involving the chest wall is scarce. The aim of the present study, was to describe experience with chest wall swellings diagnosed as lymphoid neoplasms on fine needle aspiration (FNA) cytology. METHODS: Eleven chest wall swellings were diagnosed as lymphoid neoplasms on FNA over a period of 15 years (January 2000-December 2014)...
July 21, 2017: Cytopathology: Official Journal of the British Society for Clinical Cytology
https://www.readbyqxmd.com/read/28730250/metastatic-high-grade-myxofibrosarcoma-review-of-a-clinical-case
#4
Tiberiu Paul Neagu, Ruxandra Diana Sinescu, Valentin Enache, Sanda Claudia Achim, Mirela Ţigliş, Liliana Elena Mirea
We present the particular clinical and histological features of a metastatic high-grade myxofibrosarcoma (MFS) of the left buttock in a 77-year-old male patient. The tumor was biopsied and surgically removed in order to increase the patient's comfort, due to its increased size and aggressive clinical behavior. Computed tomography (CT) revealed metastases in the pleura and mediastinal lymph nodes, so limb-sparing tumor excision followed by palliative care was the best practice for the patient until the fatal outcome...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28730229/molecular-analysis-of-brca1-and-brca2-genes-by-next-generation-sequencing-and-ultrastructural-aspects-of-breast-tumor-tissue
#5
Corina Elena Mihalcea, Ana Maria Moroşanu, Daniela Murăraşu, Liliana Puiu, Sabin Aurel Cinca, Silviu Cristian Voinea, Nicolae Mirancea
In this paper, we focus our interest on the dynamics alterations of the tumor-stroma interface at the ultrastructural level and to detect BRCA1 and BRCA2 mutations using next generation sequencing (NGS) of breast tumor tissue. Electron microscopic investigation revealed some peculiar infrastructural alterations of the tumor cells per se as well as of the tumor-stroma interface: invadopodia, shedding microvesicles, altered morphology and reduced number of telocytes, different abnormalities of the microvasculature...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28730141/extracellular-vesicles-as-modulators-of-tumor-microenvironment-and-disease-progression-in-glioma
#6
REVIEW
Abir Mondal, Divya Kumari Singh, Suchismita Panda, Anjali Shiras
Diffuse gliomas are lethal tumors of the central nervous system (CNS) characterized by infiltrative growth, aggressive nature, and therapeutic resistance. The recent 2016 WHO classification for CNS tumors categorizes diffuse glioma into two major types that include IDH wild-type glioblastoma, which is the predominant type and IDH-mutant glioblastoma, which is less common and displays better prognosis. Recent studies suggest presence of a distinct cell population with stem cell features termed as glioma stem cells (GSCs) to be causal in driving tumor growth in glioblastoma...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28729773/is-new-american-thyroid-association-risk-classification-for-hereditary-medullary-thyroid-carcinoma-applicable-to-chinese-patients-a-single-center-study
#7
Xiwei Zhang, Dangui Yan, Junyi Wang, Hanfeng Wan, Yongxia Zhang, Yabing Zhang, Yuqin He, Wensheng Liu, Bin Zhang
OBJECTIVE: The American Thyroid Association (ATA) proposed a new risk classification for hereditary medullary thyroid carcinoma (MTC) in 2015. This study aimed to assess whether the new guidelines are suitable for the Chinese population, and reported our experience on prophylactic thyroidectomy. METHODS: A total of 73 patients from 22 families were screened as rearranged during transfection (RET) mutation carriers from 2010 to 2016 in Cancer Hospital, Chinese Academy of Medical Science; the medical history for each patient was collected...
June 2017: Chinese Journal of Cancer Research, Chung-kuo Yen Cheng Yen Chiu
https://www.readbyqxmd.com/read/28729720/comparative-gene-expression-profiling-of-the-large-cell-variant-of-gastrointestinal-marginal-zone-b-cell-lymphoma
#8
Thomas F E Barth, Johann M Kraus, Ludwig Lausser, Lucia Flossbach, Lukas Schulte, Karlheinz Holzmann, Hans A Kestler, Peter Möller
Gastrointestinal (g.i.) large cell lymphoma is currently regarded as diffuse large B-cell lymphoma (DLBCL) despite a more favorable clinical outcome compared to other DLBCL. Cluster analyses on a transcriptome signature of NF-κB target genes of 30 g.i. marginal zone B-cell lymphomas (MZBL; 8 g.i. MZBL, 22 large cell MZBL - among them 9 with coexisting small cell component) and 6 DLBCL (3 activated B-cell like (ABC), 3 germinal center-like (GCB)) reveals a distinct pattern. The distinctiveness of large cell MZBL samples is further confirmed by a cohort of 270 available B-cell lymphoma and B-cell in silico profiles...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729523/malignancy-rates-of-thyroid-cytology-cyst-fluid-benign-or-non-diagnostic
#9
Güven Güney, İbrahim Tayfun Şahiner
BACKGROUND We sought to investigate subgroup distribution using Bethesda classification and risks for malignancy. We also compared the malignancy risk of cases that were denoted as non-diagnostic due to cystic contents, with cases that were denoted as non-diagnostic due to presence of other features. MATERIAL AND METHODS The study included pathology test results of 1,440 thyroid nodule samples diagnosed using Bethesda classification. Results of 305 thyroidectomy excision specimens from these patients were also compared with cytology results to determine the frequency of malignancy...
July 21, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28728862/seminal-plasma-proteins-modify-the-distribution-of-sperm-subpopulations-in-cryopreserved-semen-of-rams-with-lesser-fertility
#10
Alba Ledesma, Lucía Zalazar, Estela Fernández-Alegre, Federico Hozbor, Andreina Cesari, Felipe Martínez-Pastor
Any physiological mechanism involved in sperm selection and semen improvement has effects on heterogeneous sperm populations. This is mainly due to the fact that sperm populations within a single ejaculate have considerable heterogeneity for many variables, such as motility which is meaningful in terms of understanding how some sperm cells possess fertility advantages as compared with other cells. In the present research, initially there was a multivariate and clustering analysis used to assess sperm motility data from cryopreserved ram semen to identify subpopulations and compare the distribution of these clusters between rams with lesser and greater fertility...
June 27, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28728851/predictors-of-incident-heart-failure-in-patients-after-an-acute-coronary-syndrome-the-lipid-heart-failure-risk-prediction-model
#11
Andrea Driscoll, Elizabeth H Barnes, Stefan Blankenberg, David M Colquhoun, David Hunt, Paul J Nestel, Ralph A Stewart, Malcolm J West, Harvey D White, John Simes, Andrew Tonkin
BACKGROUND: Coronary heart disease is a major cause of heart failure. Availability of risk-prediction models that include both clinical parameters and biomarkers is limited. We aimed to develop such a model for prediction of incident heart failure. METHODS: A multivariable risk-factor model was developed for prediction of first occurrence of heart failure death or hospitalization. A simplified risk score was derived that enabled subjects to be grouped into categories of 5-year risk varying from <5% to >20%...
June 30, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28727556/effective-screening-and-classification-of-cervical-precancer-biopsy-imagery
#12
Jaidip Jagtap, Nishigandha Patil, Abdul K Parchur, Chayanika Pantola, Asha Agarwal, Kiran Pandey, Asima Pradhan
Microscope images of biopsy samples of cervical precancers conventionally discriminated by histopathology, the current "gold standard" for cancer detection, showed that their correlation properties are segregated into different classes. The correlation domains clearly indicate increasing cellular clustering in different grades of precancer compared to their normal counterparts. This trend indicates the probability of pixel distribution of the corresponding tissue images. Because the cell density is not uniform in the higher grades, the skewness (asymmetry of a distribution), kurtosis (sharpness of a distribution), entropy (randomness), and standard deviation are affected...
July 18, 2017: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/28727286/using-cell-nuclei-features-to-detect-colon-cancer-tissue-in-hematoxylin-and-eosin-stained-slides
#13
Alex Skovsbo Jørgensen, Anders Munk Rasmussen, Niels Kristian Mäkinen Andersen, Simon Kragh Andersen, Jonas Emborg, Rasmus Røge, Lasse Riis Østergaard
Currently, diagnosis of colon cancer is based on manual examination of histopathological images by a pathologist. This can be time consuming and interpretation of the images is subject to inter- and intra-observer variability. This may be improved by introducing a computer-aided diagnosis (CAD) system for automatic detection of cancer tissue within whole slide hematoxylin and eosin (H&E) stains. Cancer disrupts the normal control mechanisms of cell proliferation and differentiation, affecting the structure and appearance of the cells...
July 20, 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/28727276/correlation-between-microrna-expression-clinicopathological-characteristics-and-prognosis-in-patients-with-non-small-cell-lung-cancer-a-retrospective-study
#14
Xin Wang, Yi Zhang, Xiuyi Zhi
BACKGROUND: Lung cancer prognosis is related to various factors; however, the comprehensive relationship between these factors, including microRNAs (miRNAs), and lung cancer prognosis has not been determined. Thus, the aim of this study was to identify the key factors associated with lung cancer prognosis. METHODS: We retrospectively analyzed prognosis and relevant factors in 216 non-small cell lung cancer (NSCLC) patients diagnosed from January 2008 to December 2014...
July 20, 2017: Thoracic Cancer
https://www.readbyqxmd.com/read/28727228/actin-gamma-1-a-new-skin-cancer-pathogenic-gene-identified-by-the-biological-feature-based-classification
#15
Xinqian Dong, Yingsheng Han, Zhen Sun, Junlong Xu
Skin cancer is the most common form of cancer that accounting for at least 40% of cancer cases around the world. This study aimed to identify skin cancer-related biological features and predict skin cancer candidate genes by employing machine learning based on biological features of known skin cancer genes. The known skin cancer-related genes were fetched from database and encoded by the enrichment scores of gene ontology and pathways. The optimal features of the skin cancer related genes were selected with a series of feature selection methods, such as mRMR, IFS, and Random Forest algorithm...
July 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28726505/renal-angiomyolipoma-radiologic-classification-and-imaging-features-according-to-the-amount-of-fat
#16
Byung Kwan Park
OBJECTIVE: The purposes of this article are to introduce the radiologic classifications of renal angiomyolipoma (AML) and the clinical implications, to show the imaging features of each type of AML, and to describe which types of AML should be biopsied. CONCLUSION: Renal AML can be classified according to amount of fat as fat rich, fat poor, or fat invisible. To detect fat, one needs to thoroughly evaluate the entire AML by controlling the size and shape of the ROI...
July 20, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28725969/mastocytosis-from-a-molecular-point-of-view
#17
REVIEW
Daniel Elieh Ali Komi, Todd Rambasek, Stefan Wöhrl
Mast cells (MCs) are physiologically activated by binding of stem cell factor (SCF) to the extracellular domains of the Kit receptor. This binding increases the proliferation and prolongs the survival of normal mature MCs, as well as intensifies the release of mediators. In mastocytosis, somatic mutations of the coding Kit gene cause autocrine dysregulation and lead to constitutive KIT activation even in the absence of its ligand SCF. Clinical symptoms are caused by MC-mediator release and/or infiltration of MCs into tissues...
July 19, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28725654/stem-cells-from-human-hair-follicles-first-mechanical-isolation-for-immediate-autologous-clinical-use-in-androgenetic-alopecia-and-hair-loss
#18
Pietro Gentile, Maria G Scioli, Alessandra Bielli, Augusto Orlandi, Valerio Cervelli
BACKGROUND: Hair follicles are known to contain a well-characterized niche for adult stem cells: the bulge, which contains epithelial and melanocytic stem cells. Stem cells in the hair bulge, a clearly demarcated structure within the lower permanent portion of hair follicles, can generate the interfollicular epidermis, hair follicle structures, and sebaceous glands. The bulge epithelial stem cells can also reconstitute in an artificial in vivo system to a new hair follicle. METHODS: In this study, we have developed a new method to isolate human adult stem cells by mechanical centrifugation of punch biopsy from human hair follicles without culture condition...
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/28724745/seq-identifies-circulating-mir-125a-5p-mir-125b-5p-and-mir-143-3p-as-potential-biomarkers-for-acute-ischemic-stroke
#19
Steffen Tiedt, Matthias Prestel, Rainer Malik, Nicola Schieferdecker, Marco Düring, Veronika Kautzky, Ivelina Stoycheva, Julia Böck, Bernd H Northoff, Matthias Klein, Franziska Dorn, Knut Krohn, Daniel Teupser, Arthur Liesz, Nikolaus Plesnila, Lesca M Holdt, Martin Dichgans
Rationale: Currently, there are no blood-based biomarkers with clinical utility for acute ischemic stroke (IS). microRNAs (miRNAs) show promise as disease markers due to their cell-type specific expression patterns and stability in peripheral blood. Objective: To identify circulating miRNAs associated with acute IS, determine their temporal course up to 90 days post-stroke, and explore their utility as an early diagnostic marker. Methods and Results: We used RNA sequencing to study expression changes of circulating miRNAs in a discovery sample of 20 IS patients and 20 matched healthy control subjects (HCs)...
July 19, 2017: Circulation Research
https://www.readbyqxmd.com/read/28723657/an-emerging-function-of-circrna-mirnas-mrna-axis-in-human-diseases
#20
REVIEW
Dawei Rong, Handong Sun, Zhouxiao Li, Shuheng Liu, Chaoxi Dong, Kai Fu, Weiwei Tang, Hongyong Cao
Circular RNAs (circRNAs), a novel class of long noncoding RNAs, are characterized by a covalently closed continuous loop without 5' or 3' polarities structure and have been widely found in thousands of lives including plants, animals and human beings. Utilizing the high-throughput RNA sequencing (RNA-seq) technology, recent findings have indicated thata great deal of circRNAs, which are endogenous, stable, widely expressed in mammalian cells, often exhibit cell type-specific, tissue-specific or developmental-stage-specific expression...
July 10, 2017: Oncotarget
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