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https://www.readbyqxmd.com/read/29443702/an-automated-segmentation-of-r2-iron-overloaded-liver-images-using-a-fuzzy-c-mean-clustering-scheme
#1
Pairash Saiviroonporn, Pornpim Korpraphong, Vip Viprakasit, Rungroj Krittayaphong
OBJECTIVES: The objectives of this study were to develop and test an automated segmentation of R2* iron-overloaded liver images using fuzzy c-mean (FCM) clustering and to evaluate the observer variations. MATERIALS AND METHODS: Liver R2* images and liver iron concentration (LIC) maps of 660 thalassemia examinations were randomly separated into training (70%) and testing (30%) cohorts for development and evaluation purposes, respectively. Two-dimensional FCM used R2* images, and the LIC map was implemented to segment vessels from the parenchyma...
February 13, 2018: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/29435105/sodium-fluoride-causes-hepatocellular-s-phase-arrest-by-activating-atm-p53-p21-and-atr-chk1-cdc25a-pathways-in-mice
#2
Huan Liu, Qin Luo, Hengmin Cui, Huidan Deng, Ping Kuang, Yujiao Lu, Jing Fang, Zhicai Zuo, Junliang Deng, Yinglun Li, Xun Wang, Ling Zhao
In this study, experimental pathology, flow cytometry (FCM), quantitative real-time polymerase chain reaction (qRT-PCR), and western blot (WB) were used to evaluate the effects of sodium fluoride (NaF) on hepatocellular cell cycle progression in mice. A total of 240 ICR mice were divided equally into four groups; the experimental groups received 12, 24, or 48 mg/kg NaF intragastrically for 42 days, while the control group received distilled water. Doses of NaF above 12 mg/kg increased the percentage of cells in S phase (S-phase arrest), reduced percentages of cells in G0/G1 or G2/M phase, and activated the ATM-p53-p21 and ATR-Chk1-Cdc25A pathways...
January 12, 2018: Oncotarget
https://www.readbyqxmd.com/read/29433753/a-glutathione-responsive-sulfur-dioxide-polymer-prodrug-as-a-nanocarrier-for-combating-drug-resistance-in-cancer-chemotherapy
#3
Wei Shen, Wanguo Liu, Huailin Yang, Peng Zhang, Chunsheng Xiao, Xuesi Chen
Multidrug resistance (MDR) in cancer remains a significant challenge for curing cancer by chemotherapy. In this work, a kind of glutathione (GSH)-responsive polymer prodrug of SO2 was designed and synthesized, which presented synergistic effect with doxorubicin (DOX) for combating MCF-7 ADR human breast cancer cell. Firstly, a small molecular prodrug of SO2, N-(3-azidopropyl)-2,4-dinitrobenzenesulfonamide (AP-DNs), was chemically conjugated onto the side chain of methoxy poly (ethylene glycol)-block-poly (γ-propargyl-l-glutamate) (mPEG-PPLG) block copolymer to generate an amphiphilic polymer prodrug of SO2, mPEG-PLG (DNs)...
February 3, 2018: Biomaterials
https://www.readbyqxmd.com/read/29429903/increased-infiltration-of-cd11-c-cd123-dendritic-cell-subsets-and-upregulation-of-tlr-ifn-%C3%AE-signaling-participate-in-pathogenesis-of-oral-lichen-planus
#4
Yufeng Wang, Shu Shang, Qianqian Sun, Junjun Chen, Guanhuan Du, Hong Nie, Xiaozhe Han, Guoyao Tang
OBJECTIVE: Investigation of dendritic cell (DC) subsets and expression patterns of Toll-like receptors (TLRs) was conducted to understand the pathogenesis in oral lichen planus (OLP). STUDY DESIGN: Blood, OLP lesion, and control samples were collected. Four DC subsets (CD11c + CD123 - myeloid DC1 [mDC1], CD141 + mDC2, CD11c - CD123 + plasmacytoid DC [pDC], and CD1a + CD207 + Langerhans cells [LC]) were investigated via flow cytometry (FCM) and immunohistochemical staining...
December 18, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29429260/-the-influence-and-mechanisms-of-purple-sweet-potato-anthocyanins-on-the-growth-of-bladder-cancer-biu87-cell
#5
W L Li, G H Ji, X Z Zhang, H Y Yu
Objective: To observe the effect of purple sweet potato anthocyanins on the proliferation of bladder cancer cell line BIU87 and to investigate the molecular mechanisms. Methods: Bladder cancer BIU87 cells were cultured and exposed to anthocyanins at the different concentrations of 100, 200, 400, and 800 μg/ml respectively. The growth inhibition of anthocyanins on BIU87 cells were evaluated by morphometry and cell counting kit-8 (CCK-8) assay, and the cell apoptosis rate was detected by Flow cytometry (FCM)...
February 6, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29428670/protective-effects-of-punica-granatum-pomegranate-peel-extract-on-concanavalin-a-induced-autoimmune-hepatitis-in-mice
#6
Tingting Wang, Ruoting Men, Mingxing Hu, Xiaoli Fan, Xiaoxue Yang, Xiaojun Huang, Tinghong Ye, Li Yang
Autoimmune hepatitis (AIH) is a chronic inflammatory liver disease of an unknown etiology, glucocorticoid therapy is currently recognized as an effective treatment for AIH, but conventional application and patient compliance are both hindered by its side effects. The exploration of the AIH pathogenesis and the searching for the new candidate drugs that exert potential activity and low toxicity are urgently needed. Pomegranate peel extract (PoPx) is a natural extract of Punica granatum and has been reported to have anti-inflammatory and antioxidative properties...
February 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29427599/differential-proteome-of-haemocyte-subpopulations-responded-to-white-spot-syndrome-virus-infection-in-chinese-shrimp-fenneropenaeus-chinensis
#7
Lei Zhu, Xiaoqian Tang, Jing Xing, Xiuzhen Sheng, Wenbin Zhan
In our previous study, the differentially expressed proteins have been identified by proteomic analysis in total haemocytes of shrimp (Fenneropenaeus chinensis) after white spot syndrome virus (WSSV) infection. To further investigate the differential response of haemocyte subpopulations to WSSV infection, granulocytes and hyalinocytes were separated from healthy and WSSV-infected shrimp by immunomagnetic bead (IMB) method, respectively. Then two-dimensional gel electrophoresis (2-DE) and mass spectrometry (MS) were used to analyze the differentially expressed proteins in haemocyte subpopulations between healthy and WSSV-infected shrimp...
February 7, 2018: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29427319/distinguishing-myelofibrosis-from-polycythemia-vera-and-essential-thrombocythemia-the-utility-of-enumerating-circulating-stem-cells-with-aberrant-hmicl-expression-by-flow-cytometry
#8
L L Herborg, L Nederby, H C Hasselbalch, A Aggerholm, A S Roug
INTRODUCTION: Diagnosing BCR-ABL negative myeloproliferative neoplasms (MPN) may be challenging due to overlapping features and lack of robust discriminatory parameters, especially between essential thrombocythemia (ET) and prefibrotic myelofibrosis (MF). Circulating immature hematopoietic cells are variably present in polycythemia vera (PV), ET, and MF. The C-type lectin hMICL is aberrantly expressed on hematopoietic stem cells in the majority of acute myeloid leukemia patients. However, the hMICL expression in MPN, having varying propensity of leukemic transformation, is unsettled...
February 10, 2018: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/29423758/impact-of-pre-transplantation-minimal-residual-disease-determined-by-multiparameter-flow-cytometry-on-the-outcome-of-aml-patients-with-flt3-itd-after-allogeneic-stem-cell-transplantation
#9
Xiaosu Zhao, Zhidong Wang, Guorui Ruan, Yanrong Liu, Yu Wang, Xiaohui Zhang, Lanping Xu, Xiaojun Huang, Yingjun Chang
In this study, using multiparameter flow cytometry (FCM), we investigate the impact of minimal residual disease prior to transplantation (pre-MRD) on the transplant outcomes of AML patients with fms-related tyrosine kinase 3 (FLT3)-internal tandem duplication (ITD) mutation. A total of 20 patients who received HLA-matched sibling donor transplantation (MSDT) and 63 patients who received unmanipulated haploidentical hematopoietic stem cell transplantation (haplo-HSCT) were enrolled. Patients were classified into four groups based on the status of pre-FCM: group 1 with positive pre-FCM before MSDT, group 2 with negative pre-FCM before MSDT, group 3 with positive pre-FCM before haplo-HSCT, and group 4 with positive pre-FCM before haplo-HSCT...
February 8, 2018: Annals of Hematology
https://www.readbyqxmd.com/read/29417614/comparative-safety-of-intravenous-ferumoxytol-vs-ferric-carboxymaltose-in-iron-deficiency-anemia-a-randomized-trial
#10
N Franklin Adkinson, William E Strauss, Iain C Macdougall, Kristine E Bernard, Michael Auerbach, Robert F Kaper, Glenn M Chertow, Julie S Krop
Few trials have examined rates of hypersensitivity reactions (HSRs) with intravenous iron formulations used to treat iron deficiency anemia. This randomized, multicenter, double-blind clinical trial compared the safety and efficacy of ferumoxytol versus ferric carboxymaltose (FCM), focusing on rates of HSRs and hypotension as the primary end point. Patients with iron deficiency anemia of any etiology in whom oral iron was unsatisfactory or intolerable received ferumoxytol (n = 997) or FCM (n = 1000) intravenously over ≥15 minutes on days 1 and 8 or 9 for total respective doses of 1...
February 8, 2018: American Journal of Hematology
https://www.readbyqxmd.com/read/29416124/phylogenetic-clustering-of-small-low-nucleic-acid-content-bacteria-across-diverse-freshwater-ecosystems
#11
Caitlin R Proctor, Michael D Besmer, Timon Langenegger, Karin Beck, Jean-Claude Walser, Martin Ackermann, Helmut Bürgmann, Frederik Hammes
Here we used flow cytometry (FCM) and filtration paired with amplicon sequencing to determine the abundance and composition of small low nucleic acid (LNA)-content bacteria in a variety of freshwater ecosystems. We found that FCM clusters associated with LNA-content bacteria were ubiquitous across several ecosystems, varying from 50 to 90% of aquatic bacteria. Using filter-size separation, we separated small LNA-content bacteria (passing 0.4 µm filter) from large bacteria (captured on 0.4 µm filter) and characterized communities with 16S amplicon sequencing...
February 7, 2018: ISME Journal
https://www.readbyqxmd.com/read/29416078/support-vector-machines-for-explaining-physiological-stress-response-in-wood-mice-apodemus-sylvaticus
#12
Beatriz Sánchez-González, Isabel Barja, Ana Piñeiro, M Carmen Hernández-González, Gema Silván, Juan Carlos Illera, Roberto Latorre
Physiological stress response is a crucial adaptive mechanism for prey species survival. This paper aims to identify the main environmental and/or individual factors better explaining the stress response in Wood mice, Apodemus sylvaticus. We analyzed alterations in fecal glucocorticoid metabolite (FCM) concentration - extensively used as an accurate measure of the physiological stress response - of wild mice fecal samples seasonally collected during three years. Then, support vector machines were built to predict said concentration according to different stressors...
February 7, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29415639/low-expression-of-mda-7-il-24-and-high-expression-of-c-myb-in-tumour-tissues-are-predictors-of-poor-prognosis-for-burkitt-lymphoma-patients
#13
Ming Ma, Riyang Zhao, Xingxiao Yang, Lianmei Zhao, Lihua Liu, Cong Zhang, Xuexiao Wang, Baoen Shan
OBJECTIVES: Burkitt lymphoma is one of the most common types of haematopoietic malignancy in children and adolescents. Mda-7/IL-24 had been identified as a differentiation inducer of Burkitt lymphoma cells. Previous studies have revealed that knockdown of C-myb can also lead to the terminal differentiation of Burkitt lymphoma cells. The aim of the present study was to investigate the correlation between the expression of Mda-7/IL-24 and C-myb, as well as their prognostic significance, for Burkitt lymphoma patients...
February 8, 2018: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/29410628/reticuloendotheliosis-virus-inhibits-the-immune-response-acting-on-lymphocytes-from-peripheral-blood-of-chicken
#14
Yulin Bi, Lu Xu, Lingling Qiu, Shasha Wang, Xiangping Liu, Yani Zhang, Yang Chen, Yang Zhang, Qi Xu, Guobin Chang, Guohong Chen
Chicken reticuloendotheliosis virus (REV) causes the atrophy of immune organs and immuno-suppression. The pathogenic mechanisms of REV are poorly understood. The aim of this study was to use RNA sequencing to analyse the effect of REV on immunity and cell proliferation in chicken lymphocytes from peripheral blood in vitro. Overall, 2977 differentially expressed genes (DEGs) were examined from cells between infected with REV or no; 56 DEGs related to cell proliferation and 130 DEGs related to immunity were identified...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29407619/production-characterization-and-application-of-monoclonal-antibodies-to-the-coelomocytes-of-sea-urchin-strongylocentrotus-intermedius
#15
Yinan Wang, Shaodong Meng, Jialin Zhang, Jun Ding, Qiang Li
Sea urchin is one of marine animals with high economic and great scientific research values. Axial organ is a glandular organ that has been presumed as coelomocytes origin site. In this paper, two monoclonal antibodies (3G10 and 6B3) against coelomocytes of sea urchin Strongylocentrotus intermedius were developed by hybridoma technique. The mAbs were characterized by indirect immunofluorescence assay test (IIFAT), flow cytometry (FCM) and western blot assay. Results showed that mAb 3G10 recognized a protein of a molecular weight of 17 kDa in the spherule cells, while mAb 6B3 reacted with a protein of a molecular weight of 35 kDa in the phagocytes...
January 30, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29407181/abnormal-cd25-expression-on-hematopoietic-cells-in-myelodysplastic-syndromes
#16
Pei Liu, Huijuan Jiang, Mengting Che, Rong Fu, Huaquan Wang, Lijuan Li, Wei Zhang, Jinglian Tao, Shan Gao, Zonghong Shao
OBJECTIVE: To investigate the frequencies and biological characteristics of CD25 positive hematopoietic stem cells (HSC) in myelodysplastic syndromes. METHODS: The expression of CD25 on HSC in bone marrow derived from patients with untreated MDS patients, untreated AML patients and normal controls were accessed by flow cytometry (FCM). The correlation analysis was done between CD25+ HSC and clinical parameters in MDS patients. RESULTS: The expression of CD25 on HSC (CD34+ CD38- cells) in MDS patients (28...
December 15, 2017: Leukemia Research
https://www.readbyqxmd.com/read/29397851/-prognostic-analysis-of-minimal-residual-disease-from-acute-myeloid-leukemia-after-allogeneic-hematopoietic-stem-cell-transplant-by-flow-cytometry
#17
Qi Hao, Shu-Qin Zhang, Dong-Mei Zhang, Jing-Bo Wang, Jie Zhao, Hao-Yu Cheng
OBJECTIVE: To investigate the value of flow cytometry (FCM) detection in prognostic evaluation of minimal residual disease (MRD) of acute myeloid leukemia (AML) patients after allogeneic hematopoietic stem cell transplantation (allo-HSCT). METHODS: Eighty-two cases of AML (except M3) after allo-HSCT who accord to enrolled condition (no MRD positive after allo-HSCT confirmed by regular flow cytometry detection and followed-up for 2 years) from April 2012 to September 2016 in our department were selected...
February 2018: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/29387946/the-concentration-of-fear-mice-s-behavioural-and-physiological-stress-responses-to-different-degrees-of-predation-risk
#18
Beatriz Sánchez-González, Aimara Planillo, Álvaro Navarro-Castilla, Isabel Barja
Predation is an unavoidable and dangerous fact in the lifetime of prey animals and some sign of the proximity of a predator may be enough to trigger a response in the prey. We investigated whether different degrees of predation risk by red foxes (Vulpes vulpes) evoke behavioural and physiological stress responses in wood mice (Apodemus sylvaticus). We examined the variation in mice responses due to individual factors (sex and reproductive status) and related them to the concentration of the volatile compounds from fox faeces over time...
January 31, 2018: Die Naturwissenschaften
https://www.readbyqxmd.com/read/29375709/puerarin-inhibits-bladder-cancer-cell-proliferation-through-the-mtor-p70s6k-signaling-pathway
#19
Kehua Jiang, Hongbo Chen, Kun Tang, Wei Guan, Hui Zhou, Xiaolin Guo, Zhiqiang Chen, Zhangqun Ye, Hua Xu
Puerarin, as a novel oncotherapeutic agent, may exert anticancer effects and inhibit the proliferation of cancer cells. To explore the effects of puerarin on human bladder cancer cells, and to elucidate the potential mechanism underlying these effects, a Cell Counting Kit-8 assay was used to examine the proliferation of T24 and EJ cells following puerarin treatment. The effects of puerarin treatment on the cell cycle were detected by flow cytometry (FCM), while puerarin-induced cell apoptosis was detected by terminal deoxynucleotidyl transferase dUTP nick end labeling and FCM, and the cellular ultrastructural morphological changes were observed by transmission electron microscopy...
January 2018: Oncology Letters
https://www.readbyqxmd.com/read/29373548/hyperspectral-image-classification-for-land-cover-based-on-an-improved-interval-type-ii-fuzzy-c-means-approach
#20
Hongyuan Huo, Jifa Guo, Zhao-Liang Li
Few studies have examined hyperspectral remote-sensing image classification with type-II fuzzy sets. This paper addresses image classification based on a hyperspectral remote-sensing technique using an improved interval type-II fuzzy c-means (IT2FCM*) approach. In this study, in contrast to other traditional fuzzy c-means-based approaches, the IT2FCM* algorithm considers the ranking of interval numbers and the spectral uncertainty. The classification results based on a hyperspectral dataset using the FCM, IT2FCM, and the proposed improved IT2FCM* algorithms show that the IT2FCM* method plays the best performance according to the clustering accuracy...
January 26, 2018: Sensors
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