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https://www.readbyqxmd.com/read/28439713/personalized-axillary-dissection-the-number-of-excised-lymph-nodes-of-nodal-positive-breast-cancer-patients-has-no-significant-impact-on-relapse-free-and-overall-survival
#1
Florian Ebner, Achim Wöckel, Wolfgang Janni, Rolf Kreienberg, Lukas Schwentner, Manfred Wischnewsky
PURPOSE: Sentinel lymph node (SLN) biopsy has replaced axillary lymph node dissection (ALND) for the staging of clinically node-negative breast cancer patients (BCP), demonstrating equivalent survival to ALND while resulting in reduced morbidity. ALND has remained the standard of care for the majority of BCP with clinical axillary metastases or metastases found on SLN biopsy. More recently, it is debated whether ALND could be avoided not only in SLN-negative BCP but also in selected SLN-positive disease or even in all patients...
April 24, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28437966/energy-scaling-and-extended-tunability-of-terahertz-wave-parametric-oscillator-with-mgo-doped-near-stoichiometric-linbo-sub-3-sub-crystal
#2
Yuye Wang, Longhuang Tang, Degang Xu, Chao Yan, Yixin He, Jia Shi, Dexian Yan, Hongxiang Liu, Meitong Nie, Jiachen Feng, Jianquan Yao
A widely tunable, high-energy terahertz wave parametric oscillator based on 1 mol. % MgO-doped near-stoichiometric LiNbO<sub>3</sub> crystal has been demonstrated with 1064 nm nanosecond pulsed laser pumping. The tunable range of 1.16 to 4.64 THz was achieved. The maximum THz wave output energy of 17.49 μJ was obtained at 1.88 THz under the pump energy of 165 mJ/pulse, corresponding to the THz wave conversion efficiency of 1.06 × 10<sup>-4</sup> and the photon conversion efficiency of 1...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437729/evaluation-of-the-effects-of-polymeric-chitosan-tripolyphosphate-and-solid-lipid-nanoparticles-on-germination-of-zea-mays-brassica-rapa-and-pisum-sativum
#3
Daniele Y Nakasato, Anderson E S Pereira, Jhones L Oliveira, Halley C Oliveira, Leonardo F Fraceto
Although the potential toxicity of many metallic and carbon nanoparticles to plants has been reported, few studies have evaluated the phytotoxic effects of polymeric and solid lipid nanoparticles. The present work described the preparation and characterization of chitosan/tripolyphosphate (CS/TPP) nanoparticles and solid lipid nanoparticles (SLN) and evaluated the effects of different concentrations of these nanoparticles on germination of Zea mays, Brassica rapa, and Pisum sativum. CS/TPP nanoparticles presented an average size of 233...
April 21, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28430742/utility-of-single-photon-emission-tomography-computed-tomography-for-sentinel-lymph-node-localization-in-breast-cancer-patients
#4
Agnieszka Giżewska, Ewa Witkowska-Patena, Sebastian Osiecki, Andrzej Mazurek, Zofia Stembrowicz-Nowakowska, Mirosław Dziuk
OBJECTIVES: Sentinel lymph node (SLN) mapping is currently a routine technique in breast cancer management and preoperative scintigraphic imaging plays a crucial role in the process of SLN detection. The guidelines recommend performing planar acquisition and optional single-photon emission tomography/computed tomography (SPECT/CT) imaging. The aim of this study was to verify whether routine performing of SPECT/CT in addition to planar imaging increases the sensitivity of SLN detection in patients with early-stage breast cancer...
April 20, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28427743/microbubble-detection-and-ultrasound-guided-vacuum-assisted-biopsy-of-axillary-lymph-nodes-in-patients-with-breast-cancer
#5
P Britton, P Willsher, K Taylor, F Kilburn-Toppin, E Provenzano, P Forouhi, J Benson, A Agrawal, J R Forman, M G Wallis
AIMS: To assess the feasibility of undertaking microbubble-guided vacuum-assisted biopsy (VAB) of the sentinel lymph node (SLN) and determine its sensitivity in detecting metastases. Patient experience and the impact of VAB on subsequent axillary surgery were also evaluated. MATERIALS AND METHODS: Patients with a normal axillary ultrasound or benign core biopsy planned for surgical SLN biopsy were recruited. Part 1 of the study was used to establish the technique of ultrasound microbubble contrast to detect the SLN...
April 17, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28424693/human-melanoma-derived-extracellular-vesicles-regulate-dendritic-cell-maturation
#6
Rachel L G Maus, James W Jakub, Wendy K Nevala, Trace A Christensen, Klara Noble-Orcutt, Zohar Sachs, Tina J Hieken, Svetomir N Markovic
Evolution of melanoma from a primary tumor to widespread metastasis is crucially dependent on lymphatic spread. The mechanisms regulating the initial step in metastatic dissemination via regional lymph nodes remain largely unknown; however, evidence supporting the establishment of a pre-metastatic niche is evolving. We have previously described a dysfunctional immune profile including reduced expression of dendritic cell (DC) maturation markers in the first node draining from the primary tumor, the sentinel lymph node (SLN)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28415938/indocyanine-green-detects-sentinel-lymph-nodes-in-early-breast-cancer
#7
Jun Liu, Linping Huang, Ning Wang, Ping Chen
Objective To explore the clinical value of indocyanine green (ICG) for the fluorescence-guided detection of sentinel lymph nodes (SLNs) during sentinel lymph node biopsy (SLNB) in patients with early breast cancer. Methods This retrospective study included female patients with breast cancer. Patients were administered methylene blue and ICG using standard techniques. All SLNs that were collected during surgery were submitted for pathological examination. SLNs were defined as those that were either fluorescent, blue, fluorescent and blue or palpably suspicious...
April 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28415882/rage-receptor-targeted-bioconjuguate-lipid-nanoparticles-of-diallyl-disulfide-for-improved-apoptotic-activity-in-triple-negative-breast-cancer-in-vitro-studies
#8
Venkata Talluri Siddhartha, Sai Kiran S S Pindiprolu, Pavan Kumar Chintamaneni, Shashank Tummala, S Nandha Kumar
In the present study, we have demonstrated receptor for advanced glycation endproducts (RAGE) as a target for delivery of drugs specifically to triple negative breast cancer cells. We have prepared solid lipid nanoparticle formulation of cytotoxic agent di-allyl-disulfide (DADS) to overcome its bioavailability issues. Then, we have surface modified DADS-loaded solid lipid nanoparticles (DADS-SLN) with RAGE antibody to achieve site-specific delivery of DADS to TNBC cells. We found a significant cellular internalization of RAGE surface modified DADS-SLN (DADS-RAGE-SLN) when compared to DADS-SLN...
April 17, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28415513/evaluation-of-radiolabeled-curcumin-loaded-solid-lipid-nanoparticles-usage-as-an-imaging-agent-in-liver-spleen-scintigraphy
#9
Arif Kursad Ayan, Ayse Yenilmez, Hayrettin Eroglu
Curcumin-loaded solid lipid nanoparticles (C-SLNs) were prepared using micro emulsion and ultrasonication methods in the first stage of this study to determine the role of C-SLN on liver-spleen scintigraphy. It was concluded that the curcumin that was encapsulated in solid lipid nanoparticles had a β' polymorph structure according to the X-ray diffraction (XRD) analysis. İt was concluded that these particles were at nano scale according to the laser diffraction (LD) analysis. Fourier transform infrared spectroscopy (FT-IR) analysis suggested an interaction between the curcumin and the solid lipid matrix, and the curcumin was loaded on the solid lipid nanoparticles...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28412473/nanoformulations-for-dimethyl-fumarate-physicochemical-characterization-and-in-vitro-in-vivo-behavior
#10
Elisabetta Esposito, Rita Cortesi, Markus Drechsler, Jie Fan, Bingmei M Fu, Laura Calderan, Silvia Mannucci, Federico Boschi, Claudio Nastruzzi
Dimethyl fumarate has been demonstrated useful in relapsing remitting multiple sclerosis treatment (Tecfidera®). Nevertheless, since Tecfidera® capsules induce flushing, gastro-intestinal events and other more serious drawbacks, in this investigation a nanoparticle based system to be administered by an alternative way is proposed. In particular this study describes the preparation and characterization of dimethyl fumarate-containing solid lipid nanoparticles (SLN). Namely SLN based on tristearin, tristearin SLN treated with polysorbate 80 and cationic SLN constituted of tristearin in mixture with dimethyldioctadecylammonium chloride were investigated...
April 12, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28412471/surface-modification-of-solid-lipid-nanoparticles-for-oral-delivery-of-curcumin-improvement-of-bioavailability-through-enhanced-cellular-uptake-and-lymphatic-uptake
#11
Jong-Suep Baek, Cheong-Weon Cho
Curcumin has been reported to exhibit potent anticancer effects. However, poor solubility, bioavailability and stability of curcumin limit its in vivo efficacy for the cancer treatment. Solid lipid nanoparticles (SLN) are a promising delivery system for the enhancement of bioavailability of hydrophobic drugs. However, burst release of drug from SLN in acidic environment limits its usage as oral delivery system. Hence, we prepared N-carboxymethyl chitosan (NCC) coated curcumin-loaded SLN (NCC-SLN) to inhibit the rapid release of curcumin in acidic environment and enhance the bioavailability...
April 12, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28411056/development-and-evaluation-of-resveratrol-vitamin-e-and-epigallocatechin-gallate-loaded-lipid-nanoparticles-for-skin-care-applications
#12
Jin Chen, Ning Wei, Maria Lopez-Garcia, Dianna Ambrose, Jason Lee, Colin Annelin, Teresa Peterson
Solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) have been studied as potential carriers for both dermal and transdermal drug delivery. SLN contain lipid droplets that are fully crystallized and have a highly-ordered crystalline structure. NLC are modified SLN in which the lipid phase contains both solid and liquid lipids at room temperature. SLN and NLC are thought to combine the advantages of polymeric particles, liposomes and emulsions. Therefore they provide high encapsulation percentages, better protection for incorporated actives and allow for control of desired release profile...
April 11, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28410225/sentinel-lymph-node-mapping-in-endometrial-cancer-a-systematic-review-and-meta-analysis
#13
REVIEW
Hefeng Lin, Zheyuan Ding, Vishnu Goutham Kota, Xiaoming Zhang, Jianwei Zhou
Endometrial cancer is the most frequent tumor in the female reproductive system, while the sentinel lymph node (SLN) mapping for diagnostic efficacy of endometrial cancer is still controversial. This meta-analysis was conducted to evaluate the diagnostic value of SLN in the assessment of lymph nodal involvement in endometrial cancer. Forty-four studies including 2,236 cases were identified. The pooled overall detection rate was 83% (95% CI: 80-86%). The pooled sensitivity was 91% (95% CI: 87-95%). The bilateral pelvic node detection rate was 56% (95% CI: 48-64%)...
March 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28401259/mechanism-of-salinomycin-overproduction-in-streptomyces-albus-as-revealed-by-comparative-functional-genomics
#14
Xiaojie Zhang, Chenyang Lu, Linquan Bai
The anticoccidial salinomycin is a polyketide produced by Streptomyces albus, and the high-yield strain BK 3-25 produces 18.0 g/L salinomycin under lab condition. In order to elucidate the overproduction mechanism, the genome of BK 3-25 was fully sequenced and compared with the wild-type DSM 41398. Strain BK 3-25 has a 75-kb large deletion, containing type-I polyketide gene cluster PKS-9, and 60 additional InDels and SNVs affecting 55 CDSs, including a 1-bp deletion in type-I PKS gene cluster PKS-6. Subsequently, individual or combined deletions of the 75-kb region and PKS-6 in the wild-type resulted in improved salinomycin yields from 2...
April 11, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28391597/contrast-enhanced-ultrasound-imaging-in-vivo-with-laser-activated-nanodroplets
#15
Heechul Yoon, Steven K Yarmoska, Alexander S Hannah, Changhan Yoon, Kristina A Hallam, Stanislav Y Emelianov
PURPOSE: This study introduces a real-time contrast-enhanced ultrasound imaging method with recently developed laser-activated nanodroplets (LANDs), a new class of phase-change nanometer-scale contrast agents that provides perceptible, sustained high-contrast with ultrasound. METHODS: In response to pulsed laser irradiation, the LANDs-, which contain liquid perfluorohexane and optical fuses-blink (vaporize and recondense). That is, they change their state from liquid nanodroplets to gas microbubbles, and then back to liquid nanodroplets...
April 9, 2017: Medical Physics
https://www.readbyqxmd.com/read/28391512/is-regression-after-neoadjuvant-chemotherapy-for-locally-advanced-breast-cancer-different-in-sentinel-and-non-sentinel-nodes
#16
Gábor Cserni, Tamás Zombori, Xavier Andreu, Simonetta Bianchi, Peter Regitnig, Isabel Amendoeira, Davide Balmativola, Anikó Kovács, Alicia Cordoba, Angelika Reiner, Janina Kulka, Handan Kaya, Inta Liepniece-Karele, Cecily Quinn, Bence Kővári
Tumor draining sentinel lymph nodes (SLNs) are the sites of selective changes as compared to non-SLNs. They show features of tumor-reactive lymphadenopathy, including increased total number of functional blood vessels, but a relative immunosuppressed status has also been described in them. We explored the hypothesis of a selective regression or non-regression in SLNs versus non-SLNs in 142 patients with 110 estrogen receptor-positive and 32 estrogen receptor-negative tumors undergoing both SLN biopsy and axillary lymph node dissection after neoadjuvant therapy by assessing the tumoral (metastatic) and regression statuses of SLNs and non-SLNs separately...
April 8, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28375931/a-comparison-of-the-detection-of-sentinel-lymph-nodes-using-indocyanine-green-and-near-infrared-fluorescence-imaging-versus-blue-dye-during-robotic-surgery-in-uterine-cancer
#17
Ane Gerda Eriksson, Anna Beavis, Robert A Soslow, Qin Zhou, Nadeem R Abu-Rustum, Ginger J Gardner, Oliver Zivanovic, Kara Long Roche, Yukio Sonoda, Mario M Leitao, Elizabeth L Jewell
OBJECTIVES: The objective of this study was to assess and compare the sentinel lymph node (SLN) detection rate with indocyanine green (ICG) and near-infrared fluorescence imaging versus blue dye using the robotic platform in patients with uterine cancer. METHODS: We identified all patients with uterine cancer undergoing SLN mapping using ICG or blue dye on the robotic platform from January 2011 to December 2013. Our institutional SLN algorithm and pathologic processing protocol were adhered to uniformly...
May 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28374119/sentinel-lymph-node-mapping-using-spect-ct-and-gamma-probe-in-endometrial-cancer-an-analysis-of-parameters-affecting-detection-rate
#18
Samine Sahbai, Florin-Andrei Taran, Annette Staebler, Diethelm Wallwiener, Christian la Fougère, Sara Brucker, Helmut Dittmann
PURPOSE: SPECT/CT after pericervical injection of technetium-99 m-nanocolloid was shown to be suitable for sentinel lymph node (SLN) mapping in endometrial cancer (EC). The aim of this study was to analyze factors affecting successful SLN detection by means of SPECT/CT such as imaging findings, patient characteristics and tumor biology in a large cohort of patients. METHODS: One hundred and forty-five consecutive patients suffering from EC who received pre-surgical SLN mapping at our institution between 2011 and 2016 were included in this analysis...
April 3, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28365958/lymph-node-metastases-in-clinically-n0-patients-with-papillary-thyroid-microcarcinomas-a-single-institution-experience
#19
Merima Goran, Tatjana Pekmezovic, Ivan Markovic, Nada Santrac, Marko Buta, Dusica Gavrilovic, Nikola Besic, Yasuhiro Ito, Igor Djurisic, Gordana Pupic, Radan Dzodic
PURPOSE: To register the frequency of central and lateral lymph node metastases (LNMs) from papillary thyroid microcarcinomas (PTMCs), and to assess whether sentinel lymph node (SLN) biopsy of the lateral compartment is an accurate technique to select patients with true positive but clinically negative lymph nodes for one-time selective lateral neck dissection (sLND). The correlation between tumor characteristics (size, multifocality, bilaterality, capsular invasion) and LNMs was analyzed...
January 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28363672/sentinel-lymph-node-mapping-reduces-practice-pattern-variations-in-surgical-staging-for-endometrial-adenocarcinoma-a-before-and-after-study
#20
Christina Y Liu, Kevin M Elias, Brooke E Howitt, Larissa J Lee, Colleen M Feltmate
OBJECTIVE: To examine the effects of universal sentinel lymph node mapping on the use of nodal staging in endometrial adenocarcinoma. METHODS: Two approaches to laparoscopic staging for endometrial adenocarcinoma were compared using a before and after study design. The before cohort underwent selective lymphadenectomy from January 1, 2014-October 1, 2015 while the after cohort underwent universal sentinel lymph node (SLN) mapping from October 2, 2015-September 29, 2016...
March 28, 2017: Gynecologic Oncology
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