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Breast spectroscopy

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https://www.readbyqxmd.com/read/28730725/targeting-nano-drug-delivery-to-cancer-cells-using-tunable-multi-layer-silver-decorated-gold-nanorods
#1
Zeid A Nima, Ahmed M Alwbari, Vijayalakshmi Dantuluri, Rabab N Hamzah, Natasha Sra, Pooja Motwani, Konstantinos Arnaoutakis, Rebecca A Levy, Amani F Bohliqa, Dmitry Nedosekin, Vladimir P Zharov, Issam Makhoul, Alexandru S Biris
Multifunctional nanoparticles have high potential as targeting delivery vehicles for cancer chemotherapy. In this study, silver-decorated gold nanorods (AuNR\Ag) have been successfully used to deliver specific, targeted chemotherapy against breast cancer (MCF7) and prostate carcinoma (PC3) cell lines. Doxorubicin, a commonly used chemotherapy, and anti-Epithelial cell adhesion molecule (anti-EpCAM) antibodies were covalently bonded to thiolated polyethylene glycol-coated AuNR\Ag, and the resultant system was used to deliver the drugs to cancer cells in vitro...
July 21, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28721737/a-new-water-soluble-nano-micelle-through-self-assembly-pectin-curcumin-conjugates-preparation-characterization-and-anti-cancer-activity-evaluation
#2
Feng Bai, Jiajing Diao, Ying Wang, Shixin Sun, Hongmei Zhang, Yunyun Liu, Yanqing Wang, Jian Cao
Curcumin is a dominating active component of curcuma longa and has been studied widely because of its prominent biological activities. Extremely low aqueous solubility, stability and bioavailability of curcumin limits its application in the field of medicine. In this study, we developed pectin-curcumin (PEC-CCM) conjugates which could self-assemble water-soluble nano-micelles in aqueous solution. The structure of PEC-CCM conjugates was characterized by ultraviolet and visible spectra (UV-Vis), fluorescence spectra, Fourier transform infrared (FTIR) spectroscopy and 1H nuclear magnetic resonance (NMR) spectroscopy...
July 19, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28719146/natural-compounds-in-cancer-prevention-effects-of-coffee-extracts-and-their-main-polyphenolic-component-5-cqa-on-oncogenic-ras-proteins
#3
Alessandro Palmioli, Carlotta Cairamelli, Renata Tisi, Michela Spinelli, Gaia De Sanctis, Elena Sacco, Cristina Airoldi
Recent epidemiological studies demonstrate that consumption of healthy foods, especially rich in polyphenols content, might reduce the incidence of cancer and degenerative diseases. In particular, chlorogenic acids (CGAs) occur ubiquitously in food, representing the most abundant polyphenols in the human diet. A number of CGA beneficial biological effects, including anti-inflammatory activity, anti-carcinogenic activity and protection against neurodegenerative diseases have been reported. However, the molecular mechanisms at the basis of these biological activities have not yet been investigated in depth...
July 18, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28711937/magnetic-resonance-metabolic-profiling-of-estrogen-receptor-positive-breast-cancer-correlation-with-currently-used-molecular-markers
#4
Ji Soo Choi, Dahye Yoon, Ja Seung Koo, Siwon Kim, Vivian Youngjean Park, Eun-Kyung Kim, Suhkmann Kim, Min Jung Kim
Estrogen receptor (ER)-positive breast cancers overall have a good prognosis, however, some patients suffer relapses and do not respond to endocrine therapy. The purpose of this study was to determine whether there are any correlations between high-resolution magic angle spinning (HR-MAS) magnetic resonance spectroscopy (MRS) metabolic profiles of core needle biopsy (CNB) specimens and the molecular markers currently used in patients with ER-positive breast cancers. The metabolic profiling of CNB samples from 62 ER-positive cancers was performed by HR-MAS MRS...
June 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28708720/predicting-neoadjuvant-chemotherapy-in-nonconcentric-shrinkage-pattern-of-breast-cancer-using-1h-magnetic-resonance-spectroscopic-imaging
#5
Juan Zhou, Peng-Gang Qiao, Hong-Tao Zhang, Gong-Jie Li, Ze-Fei Jiang
OBJECTIVE: The aim of this study was to explore the response to neoadjuvant chemotherapy (NAC) in nonconcentric shrinkage pattern of breast cancer (BC) patients using H-magnetic resonance spectroscopy. METHODS: Twenty-five BC patients were the study cohort. All patients received AT-based regimen as first-line treatment. Tumor response to chemotherapy was evaluated after the second and fourth cycles using magnetic resonance imaging and magnetic resonance spectroscopy...
July 13, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28702618/copper-ii-complexes-of-functionalized-2-2-6-2-terpyridines-and-2-6-di-thiazol-2-yl-pyridine-structure-spectroscopy-cytotoxicity-and-catalytic-activity
#6
Katarzyna Czerwińska, Barbara Machura, Slawomir Kula, Stanisław Krompiec, Karol Erfurt, Catarina Roma-Rodrigues, Alexandra R Fernandes, Lidia S Shul'pina, Nikolay S Ikonnikov, Georgiy B Shul'pin
Six new copper(ii) complexes with 2,2':6',2''-terpyridine (4'-R(n)-terpy) [1 (R(1) = furan-2-yl), 2 (R(2) = thiophen-2-yl), and 3 (R(3) = 1-methyl-1H-pyrrol-2-yl)] and 2,6-di(thiazol-2-yl)pyridine derivatives (R(n)-dtpy) [4 (R(1)), 5 (R(2)), and 6 (R(3))] have been synthesized by a reaction between copper(ii) chloride and the corresponding ligand. The complexes have been characterized by UV-vis and IR spectroscopy, and their structures have been determined by X-ray analysis. The antiproliferative potential of copper(ii) complexes of 2,2':6',2''-terpyridine and 2,6-di(thiazol-2-yl)pyridine derivatives towards human colorectal (HCT116) and ovarian (A2780) carcinoma as well as towards lung (A549) and breast adenocarcinoma (MCF7) cell lines was examined...
July 13, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28700982/phosphatidylcholine-specific-phospholipase-c-inhibition-reduces-her2-overexpression-cell-proliferation-and-in-vivo-tumor-growth-in-a-highly-tumorigenic-ovarian-cancer-model
#7
Luisa Paris, Franca Podo, Francesca Spadaro, Laura Abalsamo, Maria Elena Pisanu, Alessandro Ricci, Serena Cecchetti, Luisa Altabella, Maria Buoncervello, Ludmila Lozneanu, Marina Bagnoli, Carlo Ramoni, Silvana Canevari, Delia Mezzanzanica, Egidio Iorio, Rossella Canese
Antagonizing the oncogenic effects of human epidermal growth factor receptor 2 (HER2) with current anti-HER2 agents has not yet yielded major progress in the treatment of advanced HER2-positive epithelial ovarian cancer (EOC). Using preclinical models to explore alternative molecular mechanisms affecting HER2 overexpression and oncogenicity may lead to new strategies for EOC patient treatment. We previously reported that phosphatidylcholine-specific phospholipase C (PC-PLC) exerts a pivotal role in regulating HER2 overexpression in breast cancer cells...
July 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28700125/optical-assessment-of-mammographic-breast-density-by-a-12-wavelength-versus-a-continuous-spectrum-optical-spectroscopy-device
#8
E Jane Walter, Lothar Lilge
A 12-laser-wavelength, fixed source-detector position, cup-based optical breast spectroscopy (OBS) device was developed for use in large-scale, multi-center trials as a mammographic breast density (MBD) quantification and breast cancer risk pre-screening tool. In this study, the device was evaluated in comparison with a spectrometer-based device used in previous studies. The devices were compared on their ability to predict mammographic percent density (MPD) and to identify women with high MBD from optical spectra...
July 12, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28690587/brain-connectivity-patterns-dissociate-action-of-specific-acupressure-treatments-in-fatigued-breast-cancer-survivors
#9
Richard E Harris, Eric Ichesco, Chelsea Cummiford, Johnson P Hampson, Thomas L Chenevert, Neil Basu, Suzanna M Zick
Persistent fatigue is a pernicious symptom in many cancer survivors. Existing treatments are limited or ineffective and often lack any underlying biologic rationale. Acupressure is emerging as a promising new intervention for persistent cancer-related fatigue; however, the underlying mechanisms of action are unknown. Our previous investigations suggested that fatigued breast cancer survivors have alterations in brain neurochemistry within the posterior insula and disturbed functional connectivity to the default mode network (DMN), as compared to non-fatigued breast cancer survivors...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28668834/effects-of-pulsed-electromagnetic-fields-on-breast-cancer-cell-line-mcf-7-using-absorption-spectroscopy
#10
Dominic Z Alcantara, Ian Jerry S Soliman, Romeric F Pobre, Raouf N G Naguib
We present an analysis of the effects of pulsed electromagnetic fields (PEMF) with 3.3 MHz carrier frequency and modulated by audio resonant frequencies on the MCF-7 breast cancer cell line in vitro using absorption spectroscopy. This involves a fluorescence dye called PrestoBlue™ Cell Viability Reagent and a spectrophotometry to test the viability of MCF-7 breast cancer cells under different PEMF treatment conditions in terms of the cell absorption values. The DNA molecule of the MCF-7 breast cancer cells has an electric dipole property that renders it sensitive and reactive to applied electromagnetic fields...
July 2017: Anticancer Research
https://www.readbyqxmd.com/read/28666157/application-of-ft-ir-spectroscopy-on-breast-cancer-serum-analysis
#11
Fatemeh Elmi, Afshin Fayyaz Movaghar, Maryam Mitra Elmi, Heshmatollah Alinezhad, Novin Nikbakhsh
Breast cancer is regarded as the most malignant tumor among women throughout the world. Therefore, early detection and proper diagnostic methods have been known to help save women's lives. Fourier Transform Infrared (FT-IR) spectroscopy, coupled with PCA-LDA analysis, is a new technique to investigate the characteristics of serum in breast cancer. In this study, 43 breast cancer and 43 healthy serum samples were collected, and the FT-IR spectra were recorded for each one. Then, PCA analysis and linear discriminant analysis (LDA) were used to analyze the spectral data...
June 20, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28663913/plum-pudding-random-medium-model-of-biological-tissue-toward-remote-microscopy-from-spectroscopic-light-scattering
#12
Min Xu
Biological tissue has a complex structure and exhibits rich spectroscopic behavior. There has been no tissue model until now that has been able to account for the observed spectroscopy of tissue light scattering and its anisotropy. Here we present, for the first time, a plum pudding random medium (PPRM) model for biological tissue which succinctly describes tissue as a superposition of distinctive scattering structures (plum) embedded inside a fractal continuous medium of background refractive index fluctuation (pudding)...
June 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28663846/flexible-silicon-sensors-for-diffuse-reflectance-spectroscopy-of-tissue
#13
David M Miller, Nan M Jokerst
Diffuse reflectance spectroscopy (DRS) is being used in exploratory clinical applications such as cancer margin assessment on excised tissue. However, when interrogating nonplanar tissue anomalies can arise from non-uniform pressure. Herein is reported the design, fabrication, and test of flexible, thin film silicon photodetectors (PDs) bonded to a flexible substrate designed for use in conformal DRS. The PDs have dark currents and responsivities comparable to conventional Si PDs, and were characterized while flat and while flexed at multiple radii of curvature using liquid phantoms mimicking adipose and malignant breast tissue...
March 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28662469/molecular-cellular-and-pharmacological-effects-of-platinum-ii-diiodido-complexes-containing-9-deazahypoxanthine-derivatives-a-group-of-broad-spectrum-anticancer-active-agents
#14
Ján Vančo, Zdeněk Trávníček, Radka Křikavová, Jana Gáliková, Zdeněk Dvořák, Marta Chalupová
The platinum(II) iodido complexes 1-5 of the general formula cis-[PtI2(Ln)2], where Ln stands for O-substituted 9-deazahypoxanthine derivatives, were prepared and thoroughly characterized by various techniques, including multinuclear 1D and 2D NMR spectroscopy. The complexes were screened for their anticancer potential in vitro on ten human cancer cell lines, concretely breast adenocarcinoma (MCF7), osteosarcoma (HOS), lung carcinoma (A549), cervix epithelioid carcinoma (HeLa), malignant melanoma (G-361), prostate carcinoma (22Rv1, PC-3), hepatocellular carcinoma (HepG2), ovarian carcinoma (A2780) and cisplatin-resistant ovarian carcinoma (A2780R)...
June 19, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28654865/molecular-effects-of-doxorubicin-on-choline-metabolism-in-breast-cancer
#15
Menglin Cheng, Asif Rizwan, Lu Jiang, Zaver M Bhujwalla, Kristine Glunde
Abnormal choline phospholipid metabolism is a hallmark of cancer. The magnetic resonance spectroscopy (MRS) detected total choline (tCho) signal can serve as an early noninvasive imaging biomarker of chemotherapy response in breast cancer. We have quantified the individual components of the tCho signal, glycerophosphocholine (GPC), phosphocholine (PC) and free choline (Cho), before and after treatment with the commonly used chemotherapeutic drug doxorubicin in weakly metastatic human MCF7 and triple-negative human MDA-MB-231 breast cancer cells...
June 24, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28654584/a-novel-noncontact-diffuse-correlation-spectroscopy-device-for-assessing-blood-flow-in-mastectomy-skin-flaps-a-prospective-study-in-patients-undergoing-prosthesis-based-reconstruction
#16
Nneamaka B Agochukwu, Chong Huang, Mingjun Zhao, Ahmed A Bahrani, Li Chen, Patrick McGrath, Guoqiang Yu, Lesley Wong
A new advanced technology, noncontact diffuse correlation spectroscopy, has been recently developed for the measurement of tissue blood flow through analyzing the motions of red blood cells in deep tissues. This technology is portable, inexpensive, and noninvasive, and can measure up to 1.5-cm tissue depth. In this prospective study, the authors aimed to explore the use of this novel device in the prediction of mastectomy skin flap necrosis. The noncontact diffuse correlation spectroscopy device was used to measure mastectomy skin flap flow in patients undergoing mastectomy and immediate implant-based breast reconstruction before and immediately after mastectomy, and after placement of the prosthesis...
July 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28648600/anticancer-antibacterial-and-pollutant-degradation-potential-of-silver-nanoparticles-from-hyphaene-thebaica
#17
Bello Aminu Bello, Shahid Ali Khan, Jalaluddin Awllia Khan, Fareeduddin Quadri Syed, Muqtadir Baig Mirza, Luqman Shah, Sher Bahadar Khan
We present here the biosynthesis of AgNps from the aqueous extract of H. thebaica fruit, and monitored through UV-Vis spectrophotometer. The functional group were characterized through ATR-FTIR spectroscopy, the particle size, morphologies and elemental composition of the nanoparticles were investigated by using TEM, FESEM and EDS respectively. The anti-proliferation activity of the synthesized AgNps was carried out using MTT assay on human prostate (PC3), breast (MCF7) and liver (HepG2) cancer cell lines...
June 22, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28646756/protein-functionalization-of-zno-nanostructure-exhibits-selective-and-enhanced-toxicity-to-breast-cancer-cells-through-oxidative-stress-based-cell-death-mechanism
#18
Sailendra Mahanta, S Prathap, Deependra Kumar Ban, Subhankar Paul
Zinc oxide nanostructure (ZnONS) was chemically synthesized and functionalized (FZnONSBLA) with a small protein bovine α-lactalbumin (BLA) by chemical cross-linking methods. Both nano-structures were characterized using various techniques such as electron microscopy, dynamic light scattering (DLS), UV-Vis spectroscopy, FT-IR, photo-luminescence and X-ray diffraction. Electron microscopy and DLS analysis revealed their (ZnONS and FZnONSBLA) average size of 200nm and 450nm, respectively. When cytotoxicity of both the nanostructures were assessed in breast cancer cells MCF-7 and MDAMB231 by MTT assay and PI/Annexin V staining (FACS), FZnONSBLA demonstrated higher cell death than ZnONS primarily due to generation of intracellular reactive oxygen species (ROS)...
June 15, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28644842/investigation-of-discriminant-metabolites-in-tamoxifen-resistant-and-choline-kinase-alpha-downregulated-breast-cancer-cells-using-1h-nuclear-magnetic-resonance-spectroscopy
#19
Hoe Suk Kim, Lianji Tian, Hyeonjin Kim, Woo Kyung Moon
Metabolites linked to changes in choline kinase-α (CK-α) expression and drug resistance, which contribute to survival and autophagy mechanisms, are attractive targets for breast cancer therapies. We previously reported that autophagy played a causative role in driving tamoxifen (TAM) resistance of breast cancer cells (BCCs) and was also promoted by CK-α knockdown, resulting in the survival of TAM-resistant BCCs. There is no comparative study yet about the metabolites resulting from BCCs with TAM-resistance and CK-α knockdown...
2017: PloS One
https://www.readbyqxmd.com/read/28639300/multiparametric-mri-of-the-breast-a-review
#20
REVIEW
Maria Adele Marino, Thomas Helbich, Pascal Baltzer, Katja Pinker-Domenig
During their development, cancers acquire several functional capabilities, which are defined as the hallmarks of cancer. For a deeper understanding of the hallmarks of cancer, and, consequently, improved personalized patient care, diagnostic tests must be multilayered and complex to identify the relevant underlying processes of cancer development and progression. In this context, magnetic resonance imaging (MRI) has emerged as an exceptionally powerful, versatile, and precise imaging technique. MRI of the breast is an essential tool in breast imaging, with multiple indications...
June 22, 2017: Journal of Magnetic Resonance Imaging: JMRI
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