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Breast spectroscopy

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https://www.readbyqxmd.com/read/29051521/evaluating-feasibility-of-an-automated-3-dimensional-scanner-using-raman-spectroscopy-for-intraoperative-breast-margin-assessment
#1
G Thomas, T-Q Nguyen, I J Pence, B Caldwell, M E O'Connor, J Giltnane, M E Sanders, A Grau, I Meszoely, M Hooks, M C Kelley, A Mahadevan-Jansen
Breast conserving surgery is the preferred treatment for women diagnosed with early stage invasive breast cancer. To ensure successful breast conserving surgeries, efficient tumour margin resection is required for minimizing tumour recurrence. Currently surgeons rely on touch preparation cytology or frozen section analysis to assess tumour margin status intraoperatively. These techniques have suboptimal accuracy and are time-consuming. Tumour margin status is eventually confirmed using postoperative histopathology that takes several days...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29050611/structure-and-in-vitro-anticancer-activity-of-sulfated-o-polysaccharide-from-marine-bacterium-poseidonocella-pacifica-kmm-9010-t
#2
Maxim S Kokoulin, Alexandra S Kuzmich, Anatoly I Kalinovsky, Eugene S Rubtsov, Lyudmila A Romanenko, Valery V Mikhailov, Nadezhda A Komandrova
We presented the structure of the sulfated polysaccharide moiety and anticancer activity in vitro of the О-deacylated lipopolysaccharide (DPS) isolated from the marine bacterium Poseidonocella pacifica KMM 9010(T). The structure of O-polysaccharide was investigated by chemical methods along with (1)H and (13)C NMR spectroscopy. The O-polysaccharide was built up of sulfated disaccharide repeating units consisted of d-rhamnose (d-Rhaр) and 3-deoxy-d-manno-oct-2-ulosonic acid (Kdop): →7)-β-Kdoр4Ac5S-(2→3)-β-d-Rhaр2S-(1→...
December 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29043600/effects-of-ultrasound-guided-stellate-ganglion-block-on-sleep-and-regional-cerebral-oxygen-saturation-in-patients-undergoing-breast-cancer-surgery-a-randomized-controlled-double-blinded-trial
#3
Feng Jin, Xiao-Qian Li, Wen-Fei Tan, Hong Ma, Bo Fang, A-Yong Tian, Huang-Wei Lu
Numerous factors could contribute to sleep disturbances in women with breast cancer. We hypothesized that stellate ganglion block (SGB) during surgery would preserve sleep after surgery and increase intraoperative regional cerebral oxygen saturation (rSO2) on the blocked side in patients undergoing breast cancer surgery. A randomized, double-blinded, controlled trial was conducted at the First Hospital of China Medical University from January 2016 to September 2016. Ninety-six patients who underwent radical breast cancer surgery requiring general anaesthesia were randomly assigned to one of two study groups: a control group that received a saline SGB and a block group that received a 0...
October 17, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29043463/serum-selenium-levels-predict-survival-after-breast-cancer
#4
J Lubinski, W Marciniak, M Muszynska, T Huzarski, J Gronwald, C Cybulski, A Jakubowska, T Debniak, M Falco, J Kladny, J Kotsopoulos, P Sun, S A Narod
BACKGROUND: Studies have reported an inverse relationship between serum selenium levels and cancer incidence, but the impact of low serum selenium status on survival after a diagnosis of breast cancer has not been established. METHODS: We obtained a blood sample from 546 women diagnosed with a first primary invasive breast cancer between 2008 and 2015 in the region of Szczecin, Poland. Blood was collected after diagnosis, but prior to treatment. Serum selenium was quantified by mass spectroscopy and each patient was assigned to one of four categories (quartiles) based on the distribution in the entire cohort...
October 17, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29035507/sequential-delivery-of-doxorubicin-and-zoledronic-acid-to-breast-cancer-cells-by-cb-7-modified-iron-oxide-nanoparticles
#5
Farah Benyettou, Marwa Alhashimi, Matthew O'Connor, Renu Pasricha, Jérémy Brandel, Hassan Trabousli, Javed Mazher, John-Carl Olsen, Ali Trabolsi
Drug-loaded magnetic nanoparticles were synthesized and used for the sequential delivery of the anti-resorptive agent zoledronic acid (Zol) and the cytotoxic drug doxorubicin (Dox) to breast cancer cells (MCF-7). Zol was attached to bare iron oxide nanoparticles (IONPs) via phosphonate coordination to form Z-NPs. The unbound imidazole of Zol was then used to complex the organic macrocycle CB[7] to obtain CZ-NPs. Dox was then complexed to the CZ-NPs to form the fully loaded particles (DCZ-NPs), which were stable in solution at 37 ºC and physiological pH (7...
October 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29030603/conjugation-with-l-l-diphenylalanine-self-assemblies-enhances-in-vitro-antitumor-activity-of-phthalocyanine-photosensitizer
#6
Márcia I Souza, Tatiana Prieto, Tiago Rodrigues, Fabio F Ferreira, Francisco B Nascimento, Anderson O Ribeiro, Emerson R Silva, Francesca Giuntini, Wendel A Alves
We present the synthesis and characterization of new peptide conjugates obtained by hierarchical co-assembly of L,L-diphenylalanine (FF) and zinc phthalocyanine complexes (ZnPc) in water. Self-assembly capabilities under defined conditions were investigated by scanning electron microscopy, and photophysical properties were evaluated using UV-Vis and fluorescence spectroscopy. AFM observations demonstrated that these ZnPcs form different highly ordered arrays on the crystalline faces of the FF microplates and that surface roughness significantly changes with the presence of differently substituted phthalocyanine units...
October 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29027408/dual-modal-cancer-detection-based-on-optical-ph-sensing-and-raman-spectroscopy
#7
Soogeun Kim, Seung Ho Lee, Sun Young Min, Kyung Min Byun, Soo Yeol Lee
A dual-modal approach using Raman spectroscopy and optical pH sensing was investigated to discriminate between normal and cancerous tissues. Raman spectroscopy has demonstrated the potential for in vivo cancer detection. However, Raman spectroscopy has suffered from strong fluorescence background of biological samples and subtle spectral differences between normal and disease tissues. To overcome those issues, pH sensing is adopted to Raman spectroscopy as a dual-modal approach. Based on the fact that the pH level in cancerous tissues is lower than that in normal tissues due to insufficient vasculature formation, the dual-modal approach combining the chemical information of Raman spectrum and the metabolic information of pH level can improve the specificity of cancer diagnosis...
October 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29027085/two-new-cytotoxic-stilbenoid-dimers-isolated-from-cajanus-cajan
#8
Nenling Zhang, Xiangchun Shen, Xiaofei Jiang, Jiazhong Cai, Xiaoling Shen, Yingjie Hu, Samuel X Qiu
Two new stilbenoid dimers, cajanstilbenoids A (1) and B (2), were isolated from the leaves of Cajanus cajan. Planar structures of these compounds were verified by NMR (1D and 2D) and high-resolution electrospray ionization mass spectroscopy (HR-ESI-MS). Absolute configurations were assigned by comparing experimental and calculated electronic CD values. The cytotoxicity of 1 and 2 against human hepatoma (HepG2), human breast adenocarcinoma (MCF-7), and human lung cancer (A549) cells were evaluated in vitro. Compound 1 showed strong cytotoxicity against all the tested cell lines (IC50 values: 2...
October 12, 2017: Journal of Natural Medicines
https://www.readbyqxmd.com/read/29019853/holder-pasteurized-human-donor-milk-how-long-can-it-be-preserved
#9
Marita de Waard, Elise Mank, Karin van Dijk, Anne Schoonderwoerd, Johannes B van Goudoever
OBJECTIVE: When own mother's milk falls short, pasteurized human donor milk is recommended as alternative feeding for preterm infants. Donor milk has to meet the highest safety standards, but its processing and storage is expensive. The recommended storage time of pasteurized donor milk is three months. The objective of this study was to determine if the frozen storage time of pasteurized donor milk can be extended beyond 3 months without compromising its safety and quality. METHODS: For this prospective observational study breast-milk samples of 34 unique women, collected between November 2014 and June 2015, were provided by the Dutch Human Milk Bank...
October 10, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/29019431/synthesis-and-spectroscopic-characterization-study-of-new-palladium-complexes-containing-bioactive-o-o-chelated-ligands-evaluation-of-the-dna-protein-bsa-interaction-in-vitro-antitumoral-activity-and-molecular-docking
#10
Kazem Karami, Zohreh Mehri Lighvan, Hossein Farrokhpour, Maryam Dehdashti Jahromi, Amir Abbas Momtazi-Borojeni
[Pd{(C,N)-C6H4CH2NH(Et) (Qu)] (2) and [Pd{(C,N)-C6H4CH2NH(Et) (Nar)] (3) (Qu=Quercetin, Nar=Naringin) mononuclear palladium (II) complexes have been synthesized and characterized using elemental analysis, IR and electronic spectroscopy. The interaction of the prepared complexes with calf thymus DNA (CT DNA) and bovine serum albumin (BSA), monitored by UV-visible and fluorescence titrations, respectively, have been carried out to better understand the mode of their action under biological conditions. Intercalative binding mode between the complexes and DNA is suggested by the binding constant (Kb) values of 2...
October 11, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/29017885/simplified-approach-for-in-vitro-production-and-purification-of-cell-derived-cancer-antigen-15-3
#11
Shoaib Haidar, Paresh B Bhanushali, Kunal K Shukla, Deepak Modi, Chander P Puri, Shamkant B Badgujar, Manoj Chugh
Cancer antigen 15-3 (CA15-3) is a key biomarker, currently used for understanding the onset and prognosis of breast cancer. In present investigation CA15-3 has been purified from the culture supernatant of breast cancer T47-D cell line with 76% yield and 3350 fold purification. Isolated CA15-3 was analysed by sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE), immunoblotting (western blotting), chemiluminescence immunoassay (CLIA) and Fourier-transform infrared spectroscopy (FTIR). CA15-3 is a monomeric protein with an apparent molecular mass in between ∼250 to 350kDa...
October 7, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28994325/folic-acid-conjugated-peg-coated-gold-iron-oxide-core-shell-nanocomplex-as-a-potential-agent-for-targeted-photothermal-therapy-of-cancer
#12
Habib Ghaznavi, Samira Hosseini-Nami, S Kamran Kamrava, Rasoul Irajirad, Shayan Maleki, Ali Shakeri-Zadeh, Alireza Montazerabadi
This study reports the synthesis and characterization of poly(ethylene glycol) coated gold@iron oxide core-shell nanoparticles conjugated with folic acid (FA-PEG-Au@IONP). Also, targeted therapeutic properties of such a nanocomplex were studied on human nasopharyngeal carcinoma cell line KB and human breast adenocarcinoma cell line MCF-7 in vitro. The synthesized nanocomplex was characterized by transmission electron microscopy (TEM), dynamic light scattering (DLS), UV-Vis spectroscopy, vibrating sample magnetometry (VSM), and Fourier transform infrared (FTIR) spectroscopy...
October 10, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28991039/heavy-load-lifting-acute-response-in-breast-cancer-survivors-at-risk-for-lymphedema
#13
Kira Bloomquist, Peter Oturai, Megan L Steele, Lis Adamsen, Tom Møller, Karl Bang Christensen, Bent Ejlertsen, Sandra C Hayes
PURPOSE: Despite a paucity of evidence, prevention guidelines typically advise avoidance of heavy lifting in an effort to protect against breast cancer-related lymphedema. This study compared acute responses in arm swelling and related symptoms after low- and heavy-load resistance exercise among women at risk of lymphedema while receiving adjuvant taxane-based chemotherapy. METHODS: This is a randomized, cross-over equivalence trial. Women receiving adjuvant taxane-based chemotherapy for breast cancer who had undergone axillary lymph node dissection (n=21) participated in low- (60-65% 1 repetition maximum (RM), two sets of 15-20 repetitions) and heavy-load (85-90% 1RM, three sets of 5-8 repetition) upper-extremity resistance exercise separated by a one-week wash-out period...
October 4, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28969000/magnetic-resonance-metabolic-profiling-of-estrogen-receptor-positive-breast-cancer-correlation-with-currently-used-molecular-markers
#14
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...
September 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28960522/near-infrared-spectroscopy-is-a-promising-non-invasive-technique-for-monitoring-the-effects-of-feeding-regimens-on-the-cerebral-and-splanchnic-regions
#15
Alice Grometto, Benedetta Pizzo, Maria Chiara Strozzi, Francesca Gazzolo, Diego Gazzolo
AIM: The effects of different milk and, or, administration regimens on cerebro-splanchnic perfusion are still a matter of debate. We investigated the effects of the bolus administration of breast milk or formula on cerebro-splanchnic oximetry, function and perfusion, assessed by near-infrared spectroscopy (NIRS). METHODS: This observational study of 30 infants fed with breast (n=15) or formula (n=15) milk, and matched for gestational age and birth weight, was carried out in the neonatal intensive care unit of the C Arrigo Children's Hospital, Alessandria, Italy, a tertiary level referral centre, from October 2015 to December 2016...
September 27, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28958933/pyruvate-diminishes-the-cytotoxic-activity-of-ascorbic-acid-in-several-tumor-cell-lines-in%C3%A2-vitro
#16
Sandra Rodemeister, Katharina Hill
The anticancer potential of ascorbic acid (AA) has been controversially discussed for decades. Although the cytotoxic effect of pharmacologic concentrations of ascorbic acid has already been successfully demonstrated in numerous studies in vitro, it could not be verified to the same extent in vivo. We propose that the ubiquitous metabolite pyruvate diminishes the effect of AA by reacting with its presumable cytotoxic mediator hydrogen peroxide (H2O2). MTT assays confirm that co-incubation with 1.4 mM pyruvate abolishes the cytotoxic effect of pharmacologic concentrations of AA in all cancer cell lines tested (human melanoma (WM451-Lu), breast (MCF-7) and hypopharyngeal cancer cells (FaDu))...
September 27, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28958220/collective-ion-pair-single-drop-microextraction-attenuated-total-reflectance-fourier-transform-infrared-spectroscopic-determination-of-perchlorate-in-bioenvironmental-samples
#17
Swati Chandrawanshi, Santosh K Verma, Manas K Deb
Perchlorate (ClO₄(−)) is an environmental pollutant thataffects human health. Perchlorate acts as a competitive inhibitor of iodine uptake in the thyroid gland (sodium–iodide symporter inhibitor); thus, its determination is important for public health concerns. Water and milk constitute a significant portion of the human diet. Because regular intake leads to an increase in perchlorate concentration in the human body, the estimation of perchlorate is of great concern. In this work, ion-pair single-drop microextraction (SDME) combined with attenuated total reflectance (ATR)-FTIR spectroscopy has been developed for the determination of perchlorate in bioenvironmental (soil, water, dairy milk, breast milk, and urine) samples...
September 28, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28957779/a-sensitive-liquid-chromatography-electrospray-tandem-mass-spectroscopy-method-for-simultaneous-quantification-of-a-disulfide-bond-doxorubicin-conjugation-prodrug-and-activated-doxorubicin-application-to-cellular-pharmacokinetic-and-catabolism-studies
#18
Nan Zheng, Xing Wang, Yaoqi Wang, Guobing Xu, Hua Zhang, Wenbing Dai, Bing He, Qiang Zhang, Jiafu Ji, Xueqing Wang
In recent years, drug conjugates as a prodrug strategy have been widely studied, especially combined with nanotechnology. Disulfide-linked doxorubicin drug-drug conjugate (DOX-S-S-DOX) nanoparticles, have recently been developed as a doxorubicin prodrug nanoparticles with greater anticancer activity and less toxicity than doxorubicin in vivo, while its intracellular kinetics and metabolism is unclear which may provide us with a deeper understanding of its pharmacological mechanism and antitumor effect. Hence, in this study, a rapid and sensitive ultra high-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method was developed to detect doxorubicin (DOX) activated from DOX-S-S-DOX, as well as the prodrug itself in human breast cancer tumor cells (MCF-7)...
September 21, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28956701/segmental-bioimpedance-informs-diagnosis-of-breast-cancer-related-lymphedema
#19
Brenda J Svensson, Elizabeth S Dylke, Leigh C Ward, Sharon L Kilbreath
BACKGROUND: Detection of lymphedema, particularly its mild stage, is clinically challenging. The aim of this study was to determine whether segmental bioimpedance spectroscopy (BIS) provided additional information to whole arm BIS in assessing women with or at risk of lymphedema following breast cancer. METHODS AND RESULTS: Participants (n = 66), aged 61.6 ± 10.5 years (mean ± standard deviation [SD]), were grouped according to lymphedema status: (1) at-risk (n = 24) had no indicators of lymphedema and (2) lymphedema (n = 42) were suspected to be developing lymphedema or had previously met lymphedema diagnostic criteria and undergone treatment...
September 28, 2017: Lymphatic Research and Biology
https://www.readbyqxmd.com/read/28956455/a-novel-intracellular-ph-responsive-formulation-for-fty720-based-on-pegylated-graphene-oxide-nano-sheets
#20
Elham Masoudipour, Soheila Kashanian, Nasim Maleki, Ali Karamyan, Kobra Omidfar
OBJECTIVE: This study was performed to investigate a novel pH-responsive nanocarrier based on modified nano graphene oxide (nGO) to promote the acid-triggered intracellular release of a poorly soluble drug, FTY720. METHODS: To synthesize a drug conjugated to modified nGO, firstly the polyethylene glycol (PEG) was conjugated to nGO, then the produced PEG-nGO was functionalized with the anticancer drug, FTY720, through amide bonding. It was characterized by the scanning electron microscopy (SEM), the atomic force microscopy (AFM), the Fourier transform infrared (FTIR) spectroscopy and the UV-vis spectroscopy...
September 28, 2017: Drug Development and Industrial Pharmacy
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