keyword
MENU ▼
Read by QxMD icon Read
search

breast tissue

keyword
https://www.readbyqxmd.com/read/29679778/recapitulating-spatiotemporal-tumor-heterogeneity-in-vitro-through-engineered-breast-cancer-microtissues
#1
Claudia Mazio, Costantino Casale, Giorgia Imparato, Francesco Urciuolo, Paolo Antonio Netti
Tumor and microenvironmental heterogeneity hinders the study of breast cancer biology and the assessment of therapeutic strategies, being associated with high variability and drug resistance. In this context, it is mandatory to develop three-dimensional breast tumor models able to reproduce this heterogeneity and the dynamic interaction occurring between tumor cells and microenvironment. Here we show a new breast cancer microtissue model (T-µTP) uniquely able to present intra-tumor morphological heterogeneity in a dynamic and responsive endogenous matrix...
April 18, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29679564/frequencies-and-expression-levels-of-programmed-death-ligand-1-pd-l1-in-circulating-tumor-rna-ctrna-in-various-cancer-types
#2
Toshiyuki Ishiba, Andreas-Claudius Hoffmann, Joshua Usher, Yahya Elshimali, Todd Sturdevant, Mai Dang, Yolanda Jaimes, Rama Tyagi, Ronald Gonzalez, Mary Grino, Jacek K Pinski, Afsaneh Barzi, Luis E Raez, Wilfried E Eberhardt, Dirk Theegarten, Heinz-Josef Lenz, Hiroyuki Uetake, Peter V Danenberg, Kathleen Danenberg
BACKGROUND: Precision medicine and prediction of therapeutic response requires monitoring potential biomarkers before and after treatment. Liquid biopsies provide noninvasive prognostic markers such as circulating tumor DNA and RNA. Circulating tumor RNA (ctRNA) in blood is also used to identify mutations in genes of interest, but additionally, provides information about relative expression levels of important genes. In this study, we analyzed PD-L1 expression in ctRNA isolated from various cancer types...
April 18, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29679553/potential-diagnostic-role-of-circulating-mirnas-in-breast-cancer-implications-on-clinicopathological-characters
#3
Menha Swellam, Hekmat M El Magdoub, Naglaa M Hassan, Mona M Hefny, Mohamed Emam Sobeih
BACKGROUND: Circulating miRNAs are stable in body fluids and resembles their levels in cancer tissue/cells. They have been expressed in many cancers among them is breast cancer. Authors aimed to investigate the expression level of three circulating oncomiRNAs (miRNA-21, miRNA-222 and miRNA-373) in serum samples as a minimally non-invasive method for early detection of breast cancer, and study their relation with clinicopathological characters. METHODS: MiRNAs expression levels were determined using quantitative real-time polymerase chain reaction (qPCR) in serum samples from three groups: primary breast cancer patients (n = 137), benign breast lesion patients (n = 60), and healthy individuals as control group (n = 38)...
April 18, 2018: Clinical Biochemistry
https://www.readbyqxmd.com/read/29679339/long-non-coding-rna-lncrna-magi2-as3-inhibits-breast-cancer-cell-growth-by-targeting-the-fas-fasl-signalling-pathway
#4
Yong Yang, Hong Yang, Miao Xu, Haibin Zhang, Mingtao Sun, Peng Mu, Tongbao Dong, Shanmei Du, Kui Liu
Long non-coding RNAs (lncRNAs) are non-protein-coding transcripts shown to play important roles in tumourigenesis and tumour progression. Our study aimed to examine expression of the lncRNA MAGI2-AS3 in breast cancer and to explore its function in cancer cell growth. First, MAGI2-AS3 expression levels in clinical samples and cell lines were determined by quantitative reverse transcription-polymerase chain reaction (qRT-PCR). The functional significance of MAGI2-AS3 in cancer cell proliferation and apoptosis was then examined in vitro...
April 20, 2018: Human Cell
https://www.readbyqxmd.com/read/29679219/rf-ablation-pattern-shaping-employing-switching-channels-of-dual-bipolar-needle-electrodes-ex-vivo-results
#5
Jens Ziegle, Chloé Audigier, Johannes Krug, Ghazanfar Ali, Younsu Kim, Emad M Boctor, Michael Friebe
PURPOSE: Radiofrequency (RF) ablation with mono- or bipolar electrodes is a common procedure for hepatocellular carcinoma (HCC) with a low rate of recurrence for small size tumors. For larger lesions and/or non-round/ellipsoid shapes RF ablation has some limitations and generally does not achieve comparable success rates to microwave ablation or high-intensity focused ultrasound therapies. MATERIALS AND METHODS: To shape RF ablations for matching a tumor size and geometry, we have developed an electronic channel switch box for two bipolar needles that generates multiple selectable ablation patterns...
April 20, 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29678492/hmga1a-induces-alternative-splicing-of-estrogen-receptor-alpha-in-mcf-7-human-breast-cancer-cells
#6
Kenji Ohe, Shinsuke Miyajima, Tomoko Tanaka, Yuriko Hamaguchi, Yoshihiro Harada, Yuta Horita, Yuki Beppu, Fumiaki Ito, Takafumi Yamasaki, Hiroki Terai, Masayoshi Mori, Yusuke Murata, Makito Tanabe, Kenji Ashida, Munechika Enjoji, Toshihiko Yanase, Nobuhiro Harada, Toshiaki Utsumi, Akila Mayeda
The high-mobility group A protein 1a (HMGA1a) protein is known as an oncogene whose expression level in cancer tissue correlates with the malignant potential, and known as a component of senescence-related structures connecting it to tumor suppressor networks in fibroblasts. HMGA1 protein binds to DNA, but recent studies have shown it exerts novel functions through RNA-binding. Our previous studies have shown that sequence-specific RNA-binding of HMGA1a induces exon-skipping of Presenilin-2 exon 5 in sporadic Alzheimer disease...
April 17, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29678274/preoperative-mri-evaluation-of-lesion-nipple-distance-in-breast-cancer-patients-thresholds-for-predicting-occult-nipple-areola-complex-involvement
#7
G Mariscotti, M Durando, N Houssami, C M Berzovini, F Esposito, M Fasciano, P P Campanino, D Bosco, R Bussone, A Ala, I Castellano, A Sapino, L Bergamasco, P Fonio, G Gandini
AIM: To identify clinically occult nipple-areola complex (NAC) involvement using preoperative magnetic resonance imaging (MRI), to inform selection of patients eligible for nipple-sparing mastectomy (NSM) or skin-sparing mastectomy (SSM). MATERIAL AND METHODS: This was a retrospective study of 195 patients, who had preoperative breast MRI (February 2011 to January 2017) before undergoing surgical treatments (NSM or SSM) for newly diagnosed breast cancer. Tumour features at MRI (mass or non-mass lesion, diameter, lesion-NAC distance [LND]) and pathology (lesion diameter, histopathological type, receptor status) were recorded, as well as the type of surgery (NSM/SSM) and presence (NAC+) or absence (NAC-) of tumour at intraoperative evaluation of retroareolar tissue...
April 17, 2018: Clinical Radiology
https://www.readbyqxmd.com/read/29676945/model-for-predicting-breast-cancer-risk-in-women-with-atypical-hyperplasia
#8
Amy C Degnim, Stacey J Winham, Ryan D Frank, V Shane Pankratz, William D Dupont, Robert A Vierkant, Marlene H Frost, Tanya L Hoskin, Celine M Vachon, Karthik Ghosh, Tina J Hieken, Jodi M Carter, Lori A Denison, Brendan Broderick, Lynn C Hartmann, Daniel W Visscher, Derek C Radisky
Purpose Women with atypical hyperplasia (AH) on breast biopsy have an aggregate increased risk of breast cancer (BC), but existing risk prediction models do not provide accurate individualized estimates of risk in this subset of high-risk women. Here, we used the Mayo benign breast disease cohort to develop and validate a model of BC risk prediction that is specifically for women with AH, which we have designated as AH-BC. Patients and Methods Retrospective cohorts of women age 18 to 85 years with pathologically confirmed benign AH from Rochester, MN, and Nashville, TN, were used for model development and external validation, respectively...
April 20, 2018: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29676707/-ultrasound-guided-surgery-for-breast-cancer
#9
J H Volders, N M H Krekel, M H Haloua, S Meijer, M P van den Tol
Recent literature shows that perioperative ultrasound guidance of surgery for palpable and nonpalpable breast carcinoma results in improved surgical effectiveness. Ultrasound-guided surgery can easily lead to significant improvement of the number of radical resections and can decrease the need for additional surgery or extra radiotherapy. Ultrasound-guided surgery also contributes to a reduction in the amount of excessive breast tissue removal, which means the final cosmetic result is better. Ultrasound-guided surgery is cost-effective and easy to learn...
2018: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29676356/current-practice-in-handling-and-reporting-needle-biopsies-a-hospital-based-survey
#10
Paritosh Garg, Priya Pathak, Rachna Goyal, Vinod K Arora, Navjeevan Singh
Context: Core-needle biopsy (CNB) is a minimally invasive screening and diagnostic tool which provides intact tissue fragments for histopathological examination. Aims: This study was conducted to review the current practices of handling and reporting CNBs performed for core-needle biopsies from four organ systems which are frequently encountered in our institution. These include breast, prostate, soft tissues, and lymph nodes. Settings and Design: This was a retrospective study conducted at a tertiary care hospital...
April 2018: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29676025/an-unsupervised-automatic-segmentation-algorithm-for-breast-tissue-classification-of-dedicated-breast-computed-tomography-images
#11
Marco Caballo, John M Boone, Ritse Mann, Ioannis Sechopoulos
PURPOSE: To develop and evaluate a new automatic classification algorithm able to identify voxels containing skin, vasculature, adipose and fibroglandular tissue in dedicated breast CT images. METHODS: The proposed algorithm combines intensity and region-based segmentation methods with energy minimizing splines and unsupervised data mining approaches for classifying and segmenting the different tissue types. Breast skin segmentation is achieved by a region growing method which uses constraints from the previously extracted skin centerline to add robustness to the model and to reduce the false positive rate...
April 19, 2018: Medical Physics
https://www.readbyqxmd.com/read/29675573/triclosan-evoked-neurotoxicity-involves-nmdar-subunits-with-the-specific-role-of-glun2a-in-caspase-3-dependent-apoptosis
#12
Konrad A Szychowski, Agnieszka Wnuk, Joanna Rzemieniec, Małgorzata Kajta, Teresa Leszczyńska, Anna K Wójtowicz
Triclosan (TCS) is an antimicrobial agent that is used extensively in personal care and in sanitising products. A number of studies have shown the presence of TCS in different human tissues such as blood, adipose tissue, the liver, brain as well as in breast milk and urine. N-Methyl-D-aspartate receptors (NMDARs) are glutamate-gated ion channels that are widely expressed in the central nervous system and which play key roles in excitatory synaptic transmission. There is, however, no data on the involvement of NMDAR subunits in the apoptotic and neurotoxic effects of TCS...
April 19, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29675309/ultrasound-mediation-of-self-illuminating-reporters-improves-imaging-resolution-in-optically-scattering-media
#13
Junaid Ahmad, Baptiste Jayet, Philip J Hill, Melissa L Mather, Hamid Dehghani, Stephen P Morgan
In vivo imaging of self-illuminating bio-and chemiluminescent reporters is used to observe the physiology of small animals. However, strong light scattering by biological tissues results in poor spatial resolution of the optical imaging, which also degrades the quantitative accuracy. To overcome this challenging problem, focused ultrasound is used to modulate the light from the reporter at the ultrasound frequency. This produces an ultrasound switchable light 'beacon' that reduces the influence of light scattering in order to improve spatial resolution...
April 1, 2018: Biomedical Optics Express
https://www.readbyqxmd.com/read/29675095/phase-i-ii-clinical-trial-of-everolimus-combined-with-gemcitabine-cisplatin-for-metastatic-triple-negative-breast-cancer
#14
In Hae Park, Sun-Young Kong, Youngmee Kwon, Min Kyeong Kim, Sung Hoon Sim, Jungnam Joo, Keun Seok Lee
Background: The PI3K/AKT/mTOR pathway is an important oncogenic driver in triple-negative breast cancer (TNBC). This study investigated the clinical efficacy and safety of the combination of gemcitabine and cisplatin with everolimus (GPE) in patients with metastatic TNBC. Methods: In phase I, we assessed the maximum tolerated dose (MTD) of GPE in metastatic TNBC patients. Then, using a seamless design, we conducted a randomized phase II trial to compare GPE to GP in terms of progression-free survival (PFS) and toxicity...
2018: Journal of Cancer
https://www.readbyqxmd.com/read/29674317/the-atypical-mitogen-activated-protein-kinase-erk3-is-essential-for-establishment-of-epithelial-architecture
#15
Chika Takahashi, Koichi Miyatake, Morioh Kusakabe, Eisuke Nishida
Epithelia contribute to physical barriers that protect internal tissues from the external environment and also support organ structure. Accordingly, establishment and maintenance of epithelial architecture are essential for both embryonic development and adult physiology. Here, using gene knockout and -down techniques along with gene profiling, we show that extracellular signal-regulated kinase 3 (ERK3), a poorly characterized atypical mitogen-activated protein kinase (MAPK), regulates the epithelial architecture in vertebrates...
April 19, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29674228/error-analysis-of-speed-of-sound-reconstruction-in-ultrasound-limited-angle-transmission-tomography
#16
Rungroj Jintamethasawat, Won-Mean Lee, Paul L Carson, Fong Ming Hooi, J Brian Fowlkes, Mitchell M Goodsitt, Richard Sampson, Thomas F Wenisch, Siyuan Wei, Jian Zhou, Chaitali Chakrabarti, Oliver D Kripfgans
We have investigated limited angle transmission tomography to estimate speed of sound (SOS) distributions for breast cancer detection. That requires both accurate delineations of major tissues, in this case by segmentation of prior B-mode images, and calibration of the relative positions of the opposed transducers. Experimental sensitivity evaluation of the reconstructions with respect to segmentation and calibration errors is difficult with our current system. Therefore, parametric studies of SOS errors in our bent-ray reconstructions were simulated...
April 7, 2018: Ultrasonics
https://www.readbyqxmd.com/read/29674138/development-and-validation-of-a-liquid-chromatography-tandem-mass-spectrometry-assay-for-azd3965-in-mouse-plasma-and-tumor-tissue-application-to-pharmacokinetic-and-breast-tumor-xenograft-studies
#17
Xiaowen Guan, Donna Ruszaj, Marilyn E Morris
AZD3965, a pyrole pyrimidine derivative, is a potent and orally bioavailable inhibitor of monocarboxylate transporter 1 (MCT1), currently in a Phase I clinical trial in UK for lymphomas and solid tumors. There is currently no published assay for AZD3965. The objectives of this study were to develop and validate a LC/MS/MS assay for quantifying AZD3965 in mouse plasma and tumor tissue. Protein precipitation with 0.1% formic acid in acetonitrile was used for sample preparation. Chromatographic separation was achieved on a C18 column followed by tandem mass spectrometry detection in multiple reaction monitoring mode with utilizing Atmospheric Pressure Chemical Ionization...
March 31, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29673594/lincrna-ror-mir-145-promote-invasion-and-metastasis-in-triple-negative-breast-cancer-via-targeting-muc1
#18
Jianli Ma, Yue Yang, Desheng Huo, Zanyu Wang, Xiaoyu Zhai, Jing Chen, Huixin Sun, Weiwei An, Jing Jie, Pengxiang Yang
Triple-negative breast cancer (TNBC) was associated with high rates of cancer recurrence and metastasis and currently no available molecularly target. Accumulating evidences have established the importance of lincRNA-ROR as a marker of cancers. In order to better understand the mechanism of lincRNA-ROR in TNBC, we provided a novel molecular target into the regulatory invasion and metastasis in present research. We found that lincRNA-ROR was upregulated in TNBC cell lines and tissue samples. The aberrant expression of lincRNA-ROR was shown to increase invasion and metastasis in MDA-MB-231 and loss of function by siRNA reverse these process...
April 16, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29672847/loss-of-n-wasp-drives-early-progression-in-an-apc-model-of-intestinal-tumourigenesis
#19
Hayley T Morris, Loic Fort, Heather J Spence, Rachana Patel, David F Vincent, James H Park, Scott B Snapper, Francis A Carey, Owen J Sansom, Laura M Machesky
N-WASP (WASL) is a widely expressed cytoskeletal signalling and scaffold protein also implicated in regulation of Wnt signalling and homeostatic maintenance of skin epithelial architecture. N-WASP mediates invasion of cancer cells in vitro and its depletion reduces invasion and metastatic dissemination of breast cancer. Given this role in cancer invasion and universal expression in the gastrointestinal tract, we explored a role for N-WASP in the initiation and progression of colorectal cancer. While deletion of N-wasp is not detectably harmful in the murine intestinal tract, numbers of Paneth cells increased, indicating potential changes in the stem cell niche and migration up the crypt-villus axis was enhanced...
April 19, 2018: Journal of Pathology
https://www.readbyqxmd.com/read/29672601/expression-of-immune-checkpoint-regulators-cytotoxic-t-lymphocyte-antigen-4-ctla-4-and-programmed-death-ligand-1-pd-l1-in-female-breast-carcinomas
#20
Ari Kassardjian, Peter I Shintaku, Neda A Moatamed
BACKGROUND: Immune checkpoint regulators, cytotoxic T lymphocyte antigen 4 (CTLA-4) and the programmed cell death protein-1/programmed death-ligand 1 (PD-1/PD-L1) have emerged as promising new targets for cancer therapeutics. While tumor expression of PD-L1 has been shown to have objective responses to anti-PD-L1 immunotherapies, the clinical implications of CTLA-4 expression in tumor cells or immune cells in the tumor microenvironment is still controversial. We investigated the expression of CTLA-4 and PD-L1 in human breast tumors and provided a scoring system for the systematic evaluation of CTLA-4 staining...
2018: PloS One
keyword
keyword
9293
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"