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https://www.readbyqxmd.com/read/28916903/merkel-cell-carcinoma-epidemiology-pathogenesis-diagnosis-and-therapy
#1
REVIEW
Teresa Amaral, Ulrike Leiter, Claus Garbe
Merkel cell carcinoma (MCC) is a rare and aggressive skin cancer with a neuroendocrine phenotype. Incidence varies according to the geographic regions but is overall increasing. Different risk factors have been identified namely advanced age, immunosuppression, and ultraviolet light exposure. An association between MCC and polyomavirus infection is known. However, the exact mechanism that leads to carcinogenesis is yet to be fully understood. Surgery when feasible is the recommended treatment for localized disease, followed by adjuvant radiation or chemoradiation...
September 16, 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/28910167/expression-of-antimicrobial-peptides-by-uveal-and-cutaneous-melanoma-cells-and-investigation-of-their-role-in-tumor-cell-migration-and-vasculogenic-mimicry
#2
Joseph C Manarang, Deborah C Otteson, Alison M McDermott
AIMS: Antimicrobial peptides (AMPs) have been implicated in the pathogenesis of several cancers, although there is also evidence suggesting potential for novel, AMP-based antitumor therapies. Discerning potential roles of AMPs in tumor pathogenesis may provide valuable insight into the mechanisms of novel AMP-based antitumor therapy. METHODS: mRNA expression of the AMPs α defensin (HNP-1); cathelicidin (LL-37); and β defensins (hBD-1, hBD-2, hBD-3, hBD-4) in human uveal and cutaneous melanoma cell lines, primary human uveal melanocytes, and primary human uveal melanoma cells was determined by reverse transcriptase polymerase chain reaction...
September 14, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28886209/treatment-of-superficial-basal-cell-carcinoma-by-topical-photodynamic-therapy-with-fractionated-5-aminolevulinic-acid-20-versus-two-stage-topical-methylaminolevulinic-acid-results-of-a-randomized-controlled-trial
#3
J P H M Kessels, H Kreukels, P J Nelemans, M H Roozeboom, H van Pelt, K Mosterd, E R M de Haas, N W J Kelleners-Smeets
BACKGROUND: Basal cell carcinoma (BCC) is the most common type of skin cancer with growing incidence rates. Photodynamic therapy (PDT) is a frequently used treatment, especially for superficial BCC (sBCC). Two topical photosensitizing agents are currently used to treat sBCC: 5-aminolevulinic acid (ALA) and its methyl-ester (MAL). Previous research showed a high efficacy of ALA-PDT using a 2-fold fractionated illumination scheme in which two light fractions of 20 and 80 J/cm2 are delivered, four and six hours after ALA application...
September 8, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28884244/lasers-and-intense-pulsed-light-ipl-association-with-cancerous-lesions
#4
Caerwyn Ash, Godfrey Town, Rebecca Whittall, Louise Tooze, Jaymie Phillips
The development and use of light and lasers for medical and cosmetic procedures has increased exponentially over the past decade. This review article focuses on the incidence of reported cases of skin cancer post laser or IPL treatment. The existing evidence base of over 25 years of laser and IPL use to date has not raised any concerns regarding its long-term safety with only a few anecdotal cases of melanoma post treatment over two decades of use; therefore, there is no evidence to suggest that there is a credible cancer risk...
September 7, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28865875/photochemical-internalization-pci-of-bleomycin-is-equally-effective-in-two-dissimilar-leiomyosarcoma-xenografts-in-athymic-mice
#5
Simen Sellevold, Qian Peng, Ane Sofie Viset Fremstedal, Kristian Berg
BACKGROUND: Photochemical internalization (PCI) is a novel technique for delivery of active macromolecules into cancerous cells, via light activation of a specific photosensitizer and a low dose systemic drug. Numerous pre-clinical studies and one clinical trial have confirmed the treatment potential in carcinomas. Soft tissue sarcomas are rare and generally resistant to radio- and chemotherapy. Due to treatment resistance and surgical morbidity in sarcoma care, we seek to increase knowledge on PCI effects in sarcomas by studying two different, but closely related leiomyosarcomas...
August 30, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28857643/opioid-prescribing-in-rural-family-practices-a-qualitative-study
#6
Ivy A Click, Jeri Ann Basden, Joy M Bohannon, Heather Anderson, Fred Tudiver
BACKGROUND: Rural Tennessee, especially rural East Tennessee has seen a dramatic increase in rates of controlled drug prescriptions and controlled drug overdose deaths in recent years. However, little is known about the individual decisions to prescribe or continue prescriptions with relation to addiction concerns. OBJECTIVES: The purpose of this study was to learn more about what factors lead to physicians' prescribing control drugs for non-cancer pain through the use of focus groups...
August 31, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28856437/diagnosis-and-empirical-treatment-of-fever-of-unknown-origin-fuo-in-adult-neutropenic-patients-guidelines-of-the-infectious-diseases-working-party-agiho-of-the-german-society-of-hematology-and-medical-oncology-dgho
#7
REVIEW
W J Heinz, D Buchheidt, M Christopeit, M von Lilienfeld-Toal, O A Cornely, H Einsele, M Karthaus, H Link, R Mahlberg, S Neumann, H Ostermann, O Penack, M Ruhnke, M Sandherr, X Schiel, J J Vehreschild, F Weissinger, G Maschmeyer
Fever may be the only clinical symptom at the onset of infection in neutropenic cancer patients undergoing myelosuppressive chemotherapy. A prompt and evidence-based diagnostic and therapeutic approach is mandatory. A systematic search of current literature was conducted, including only full papers and excluding allogeneic hematopoietic stem cell transplant recipients. Recommendations for diagnosis and therapy were developed by an expert panel and approved after plenary discussion by the AGIHO. Randomized clinical trials were mainly available for therapeutic decisions, and new diagnostic procedures have been introduced into clinical practice in the past decade...
August 30, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28841283/evaluation-of-the-photothermal-properties-of-a-reduced-graphene-oxide-arginine-nanostructure-for-near-infrared-absorption
#8
Mohadeseh Hashemi, Meisam Omidi, Bharadwaj Muralidharan, Hugh D C Smyth, Mohammad Ali Mohagheghi, Javad Mohammadi, Thomas E Milner
Strong near-infrared (NIR) absorption of reduced graphene oxide (rGO) make this material a candidate for photothermal therapy. The use of rGO has been limited by low stability in aqueous media due to the lack of surface hydrophilic groups. We report synthesis of a novel form of reduced graphene-arginine (rGO-Arg) as a nanoprobe. Introduction of Arg to the surface of rGO not only increases the stability in aqueous solutions but also increases cancer cell uptake. Atomic force microscopy (AFM) and transmission electron microscopy (TEM) images are recorded to characterize the morphology of rGO-Arg...
August 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28838210/de-escalating-and-escalating-treatments-for-early-stage-breast-cancer-the-st-gallen-international-expert-consensus-conference-on-the-primary-therapy-of-early-breast-cancer-2017
#9
G Curigliano, H J Burstein, E P Winer, M Gnant, P Dubsky, S Loibl, M Colleoni, M M Regan, M Piccart-Gebhart, H-J Senn, B Thürlimann, F André, J Baselga, J Bergh, H Bonnefoi, S Y Brucker, F Cardoso, L Carey, E Ciruelos, J Cuzick, C Denkert, A Di Leo, B Ejlertsen, P Francis, V Galimberti, J Garber, B Gulluoglu, P Goodwin, N Harbeck, D F Hayes, C-S Huang, J Huober, K Hussein, J Jassem, Z Jiang, P Karlsson, M Morrow, R Orecchia, K C Osborne, O Pagani, A H Partridge, K Pritchard, J Ro, E J T Rutgers, F Sedlmayer, V Semiglazov, Z Shao, I Smith, M Toi, A Tutt, G Viale, T Watanabe, T J Whelan, B Xu
The 15th St. Gallen International Breast Cancer Conference 2017 in Vienna, Austria reviewed substantial new evidence on loco-regional and systemic therapies for early breast cancer. Treatments were assessed in light of their intensity, duration and side-effects, seeking where appropriate to escalate or de-escalate therapies based on likely benefits as predicted by tumor stage and tumor biology. The Panel favored several interventions that may reduce surgical morbidity, including acceptance of 2 mm margins for DCIS, the resection of residual cancer (but not baseline extent of cancer) in women undergoing neoadjuvant therapy, acceptance of sentinel node biopsy following neoadjuvant treatment of many patients, and the preference for neoadjuvant therapy in HER2 positive and triple-negative, stage II and III breast cancer...
August 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28833643/1d-coordination-polymer-nanofibers-for-low-temperature-photothermal-therapy
#10
Yu Yang, Wenjun Zhu, Ziliang Dong, Yu Chao, Lai Xu, Meiwan Chen, Zhuang Liu
Near-infrared (NIR)-light-triggered photothermal therapy (PTT) usually requires hyperthermia to >50 °C for effective tumor ablation, which can potentially induce inflammatory disease and heating damage of normal organs nearby, while tumor lesions without sufficient heating (e.g., the internal part) may survive after treatment. Achieving effective tumor killing under relatively low temperatures is thus critical toward successful clinical use of PTT. Herein, we design a simple strategy to fabricate poly(ethylene glycol) (PEG)-modified one-dimensional nanoscale coordination polymers (1D-NCPs) with intrinsic biodegradability, large surface area, pH-responsive behaviors, and versatile theranostic functions...
August 21, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28803033/the-risk-of-tumour-recurrence-in-patients-undergoing-renal-transplantation-for-end-stage-renal-disease-after-previous-treatment-for-a-urological-cancer-a-systematic-review
#11
REVIEW
Romain Boissier, Vital Hevia, Harman Max Bruins, Klemens Budde, Arnaldo Figueiredo, Enrique Lledó-García, Jonathon Olsburgh, Heinz Regele, Claire Fraser Taylor, Rhana Hassan Zakri, Cathy Yuhong Yuan, Alberto Breda
CONTEXT: Renal transplantation is the gold standard renal replacement therapy in end-stage renal disease owing to its superior survival and quality of life compared with dialysis. When the potential recipient has a history of cancer, the waiting period before renal transplantation is usually based on the Cincinnati Registry. OBJECTIVE: To systematically review all available evidence on the risk of cancer recurrence in end-stage renal disease patients with a history of urological cancer...
August 10, 2017: European Urology
https://www.readbyqxmd.com/read/28795851/selective-induction-of-apoptosis-in-mcf7-cancer-cell-by-targeted-liposomes-functionalized-with-mannose-6-phosphate
#12
Cristina Minnelli, Laura Cianfruglia, Emiliano Laudadio, Roberta Galeazzi, Michela Pisani, Emanuela Crucianelli, Davide Bizzaro, Tatiana Armeni, Giovanna Mobbili
Liposomes are versatile platforms to carry anticancer drugs in targeted drug delivery; they can be surface modified by different strategies and, when coupled with targeting ligands, are able to increase cellular internalization and organelle-specific drug delivery. An interesting strategy of antitumoral therapy could involve the use of lysosomotropic ligand-targeted liposomes loaded with molecules, which can induce lysosomal membrane permeabilization (LMP), leakage of cathepsins into the cytoplasm and subsequent apoptosis...
August 10, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28794264/liquid-phase-electron-microscopy-of-molecular-drug-response-in-breast-cancer-cells-reveals-irresponsive-cell-subpopulations-related-to-lack-of-her2-homodimers
#13
Diana B Peckys, Ulrike Korf, Stefan Wiemann, Niels de Jonge
The development of drug resistance in cancer poses a major clinical problem. An example is human epidermal growth factor receptor 2 (HER2) overexpressing breast cancer often treated with anti-HER2 antibody therapies, such as trastuzumab. Since drug resistance is rooted mainly in tumor cell heterogeneity, we examined the drug effect in different subpopulations of SKBR3 breast cancer cells, and compared the results with a drug resistant cell line, HCC1954. Correlative light microscopy and liquid-phase scanning transmission electron microscopy (STEM) were used to quantitatively analyze HER2 responses upon drug binding, whereby many tens of whole cells were imaged...
August 9, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28790340/verteporfin-inhibits-growth-of-human-glioma-in-vitro-without-light-activation
#14
Ahmad Al-Moujahed, Katarzyna Brodowska, Tomasz P Stryjewski, Nikolaos E Efstathiou, Ioannis Vasilikos, Joanna Cichy, Joan W Miller, Evangelos Gragoudas, Demetrios G Vavvas
Verteporfin (VP), a light-activated drug used in photodynamic therapy for the treatment of choroidal neovascular membranes, has also been shown to be an effective inhibitor of malignant cells. Recently, studies have demonstrated that, even without photo-activation, VP may still inhibit certain tumor cell lines, including ovarian cancer, hepatocarcinoma and retinoblastoma, through the inhibition of the YAP-TEAD complex. In this study, we examined the effects of VP without light activation on human glioma cell lines (LN229 and SNB19)...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28782050/theranostic-gold-nanoantennas-for-simultaneous-multiplexed-raman-imaging-of-immunomarkers-and-photothermal-therapy
#15
Joseph A Webb, Yu-Chuan Ou, Shannon Faley, Eden P Paul, Joseph P Hittinger, Camden C Cutright, Eugene C Lin, Leon M Bellan, Rizia Bardhan
In this study, we demonstrate the theranostic capability of actively targeted, site-specific multibranched gold nanoantennas (MGNs) in triple-negative breast cancer (TNBC) cells in vitro. By utilizing multiplexed surface-enhanced Raman scattering (SERS) imaging, enabled by the narrow peak widths of Raman signatures, we simultaneously targeted immune checkpoint receptor programmed death ligand 1 (PDL1) and the epidermal growth factor receptor (EGFR) overexpressed in TNBC cells. A 1:1 mixture of MGNs functionalized with anti-PDL1 antibodies and Raman tag 5,5-dithio-bis-(2-nitrobenzoic acid) (DTNB) and MGNs functionalized with anti-EGFR antibodies and Raman tag para-mercaptobenzoic acid (pMBA) were incubated with the cells...
July 31, 2017: ACS Omega
https://www.readbyqxmd.com/read/28766338/near-infrared-light-responsive-magnetic-dna-microgels-for-photon-and-magneto-manipulated-cancer-therapy
#16
Yitong Wang, Ling Wang, Miaomiao Yan, Shuli Dong, Jingcheng Hao
Functional DNA molecules have been introduced into polymer-based nanocarrier systems to incorporate chemotherapy drugs for cancer therapy. Here is the first report of dual-responsive microgels composed of a core of Au nanorods and a shell of magnetic ionic liquid and DNA moieties in the cross-linking network simultaneously, as effective drug delivery vectors. TEM images indicated a magnetic polymer shell has an analogous "doughnut" shape which loosely surround the AuNRs core. When irradiated with a near-infrared-light (near-IR) laser, Au nanorods are the motors which convert the light to heat, leading to the release of the encapsulated payloads with high controllability...
August 30, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28766210/positive-ultrasound-guided-lymph-node-needle-biopsy-in-breast-cancer-may-not-mandate-axillary-lymph-node-dissection
#17
Christine K Harris, Hanh Tam Tran, Katherine Lee, Charles Mylander, Daina Pack, Martin Rosman, Lorraine Tafra, Christopher B Umbricht, Reema Andrade, Wen Liang, Rubie Sue Jackson
BACKGROUND: The ACOSOG Z0011 (Z11) trial demonstrated that in patients with nonpalpable axillary lymph nodes (LN) and one to two positive sentinel LN (SLN), axillary LN dissection (ALND) is unnecessary.JAMA 305:569-575, [2011], Ann Surg 264:413-42, [2016] The Z11 trial did not require preoperative axillary ultrasound (axUS). In many centers, preoperative axUS is part of the standard workup of a newly diagnosed breast cancer patient, but in light of the Z11 results, its role is now questioned...
August 1, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28763105/physiological-doses-of-red-light-induce-il-4-release-in-co-cultures-between-human-keratinocytes-and-immune-cells
#18
Cheryl Leong, Paul L Bigliardi, Gopu Sriram, Bijin Veonice Au, John Connolly, Mei Bigliardi-Qi
Phototherapy is routinely used for the treatment of various skin conditions and targeted therapy of superficial cancers. However, the molecular mechanisms behind their biological effects and the need for efficacy enhancing photosensitizers are not well addressed. Particularly, not much is known about the inherent effect of light from the visible spectrum on cytokine release and its downstream effects in keratinocytes and immune cells located in skin and therefore exposed to light. To address this, we delivered calibrated doses of well-defined light qualities (380 to 660 nm) to co-cultures of human keratinocytes and macrophage/dendritic cells in the absence or presence of the commonly used photosensitizer 8-methoxypsoralen (8-MOP)...
August 1, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28752174/transferrin-coated-magnetic-upconversion-nanoparticles-for-efficient-photodynamic-therapy-with-near-infrared-irradiation-and-luminescence-bioimaging
#19
Dan Wang, Lin Zhu, Yuan Pu, Jie-Xin Wang, Jian-Feng Chen, Liming Dai
In the present study, we devised a green-synthesis route to NaYF4:Gd(3+),Yb(3+),Er(3+) upconversion nanoparticles (UCNPs) by using eco-friendly paraffin liquid, instead of 1-octadecene, as a high boiling non-coordinating solvent. A multifunctional nanoplatform was then developed by coating UCNPs with biocompatible transferrin (TRF) for magnetically-assisted and near-infrared light induced photodynamic therapy and bioimaging. Protoporphyrin IX (PpIX), a clinically approved photodynamic therapy agent, was loaded into the shell layer of the TRF-coated UCNPs (UCNP@TRF nanoparticles), which can be efficiently taken up by cancer cells for photodynamic therapy...
July 28, 2017: Nanoscale
https://www.readbyqxmd.com/read/28740543/self-assembly-of-semiconducting-plasmonic-gold-nanoparticles-with-enhanced-optical-property-for-photoacoustic-imaging-and-photothermal-therapy
#20
Zhen Yang, Jibin Song, Yunlu Dai, Jingyi Chen, Feng Wang, Lisen Lin, Yijing Liu, Fuwu Zhang, Guocan Yu, Zijian Zhou, Wenpei Fan, Wei Huang, Quli Fan, Xiaoyuan Chen
Although various noble metal and semiconducting molecules have been developed as photoacoustic (PA) agents, the use of semiconducting polymer-metal nanoparticle hybrid materials to enhance PA signal has not been explored. A novel semiconducting-plasmonic nanovesicle was fabricated by self-assembly of semiconducting poly(perylene diimide) (PPDI) and poly(ethylene glycol (PEG) tethered gold nanoparticles (Au@PPDI/PEG). A highly localized and strongly enhanced electromagnetic (EM) field is distributed between adjacent gold nanoparticles in the vesicular shell, where the absorbing collapsed PPDI is present...
2017: Theranostics
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