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https://www.readbyqxmd.com/read/28927147/long-term-changes-in-the-properties-of-skin-derived-fibroblasts-following-irradiation-of-the-head-and-neck
#1
Thomas Gehrke, Agmal Scherzad, Stephan Hackenberg, Pascal Ickrath, Philipp Schendzielorz, Rudolf Hagen, Norbert Kleinsasser
The tumor stroma performs an important role in carcinogenesis. It predominantly consists of fibroblasts and the connective tissue produced by them, and undergoes a multitude of interactions with the surrounding cancer cells. Since irradiation is part of the majority of therapeutic strategies for head and neck squamous cell carcinoma, more information regarding the effects of a previous irradiation on the tumor stroma is desirable. In the present study, fibroblasts were cultivated from human non-irradiated and pre-irradiated skin of the neck for 48 h...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927045/correlation-analysis-between-expression-of-pcna-ki-67-and-cox-2-and-x-ray-features-in-mammography-in-breast-cancer
#2
Xiaoming Qiu, Jixin Mei, Jianjun Yin, Hong Wang, Jinqi Wang, Ming Xie
This study investigated expression of proliferating cell nuclear antigen (PCNA), proliferation-associated nuclear antigen (Ki-67) and cyclooxygenase-2 (COX-2) in tissues of breast invasive ductal carcinoma, and analyzed the correlations between these indexes and X-ray features in mammography. A total of 90 patients who were admitted to Huangshi Central Hospital and diagnosed as breast invasive ductal carcinoma from January 2014 to January 2016 were selected. The expression of PCNA, Ki-67 and COX-2 in cancer tissues and cancer-adjacent normal tissues of patients were detected by immunohistochemical staining, and X-ray features in mammography of patients were observed...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927034/cyclin-d3-deficiency-inhibits-skin-tumor-development-but-does-not-affect-normal-keratinocyte-proliferation
#3
Sung Hyun Lee, Xian Wang, Sun Hye Kim, Yongbaek Kim, Marcelo L Rodriguez-Puebla
Rearrangement and amplification of the D-type cyclin genes have been reported in human cancer. Previous studies have demonstrated that Ras-mediated skin tumorigenesis depends on pathways that act through cyclin D1 and D2; however, the role of cyclin D3 remains unknown. The present study demonstrates that cyclin D3 ablation does not affect keratinocyte proliferation, but instead increases apoptosis levels in the bulge region of the hair follicle. Consequently, cyclin D3 ablation reduces skin papilloma development in a Ras-dependent carcinogenesis model...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28925402/contrasting-effects-of-an-mdm2-functional-polymorphism-on-tumor-phenotypes
#4
G J Ortiz, Y Li, S M Post, V Pant, S Xiong, C A Larsson, A K El-Naggar, D G Johnson, G Lozano
MDM2, an E3 ubiquitin ligase, is a potent inhibitor of the p53 tumor suppressor and is elevated in many human cancers that retain wild-type p53. MDM2 SNP309G is a functional polymorphism that results in elevated levels of MDM2 (due to enhanced SP1 binding to the MDM2 promoter) thus decreasing p53 activity. Mdm2(SNP309G/G) mice are more prone to spontaneous tumor formation than Mdm2(SNP309T/T) mice, providing direct evidence for the impact of this SNP in tumor development. We asked whether environmental factors impact SNP309G function and show that SNP309G cooperates with ionizing radiation to exacerbate tumor development...
September 18, 2017: Oncogene
https://www.readbyqxmd.com/read/28925057/serum-vascular-endothelial-growth-factor-a-levels-reflect-itch-severity-in-mycosis-fungoides-and-s%C3%A3-zary-syndrome
#5
Minami Sakamoto, Tomomitsu Miyagaki, Hiroaki Kamijo, Tomonori Oka, Naomi Takahashi, Hiraku Suga, Ayumi Yoshizaki, Yoshihide Asano, Makoto Sugaya, Shinichi Sato
Angiogenesis is an important step to support progression of malignancies, including mycosis fungoides (MF) and Sézary syndrome (SS). Vascular endothelial growth factor (VEGF)-A, a key player in angiogenesis, is secreted by tumor cells of MF/SS and its expression levels in lesional skin correlated with disease severity. In this study, we examined serum VEGF-A levels in MF/SS patients. Serum VEGF-A levels were elevated in patients with erythrodermic MF/SS and the levels decreased after treatment. Importantly, serum VEGF-A levels positively correlated with markers for pruritus...
September 19, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28923881/dermal-carotenoid-measurement-is-inversely-related-to-anxiety-in-patients-with-breast-cancer
#6
David G Li, Gabrielle LeCompte, Lev Golod, Gary Cecchi, David Irwin, Alden Harken, Amy Matecki
Breast cancer is the most prevalent malignancy among women worldwide. Increased oxidative stress and poor subjective health outcomes have been associated with increased risk of cancer recurrence and metastasis, but few studies until now have explored the relationship between oxidative stress and chronic stress/anxiety. This study aims to examine the association between anxiety and a potential dermal correlate of oxidative stress in patients with breast cancer. 102 breast cancer patients were enrolled in a cross-sectional study at Highland Hospital, a county hospital in Oakland, California...
September 18, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/28923399/up-regulation-of-rho-associated-kinase-1-2-by-glucocorticoids-promotes-migration-invasion-and-metastasis-of-melanoma
#7
Gao-Xiang Huang, Yan Wang, Jie Su, Peng Zhou, Bo Li, Li-Juan Yin, Jian Lu
Although glucocorticoids (GCs) regulate proliferation, differentiation and apoptosis of tumor cells, their influence on metastasis of tumor cells is poorly understood. Melanoma is a type of skin cancers with high metastasis. We investigated the effect of GCs on metastasis of melanoma cells and its mechanism. We found that GCs significantly promoted the adhesion, migration, invasion of melanoma cells in vitro and lung metastasis in experimental melanoma metastasis mice. Dexamethasone (Dex), a synthetic GC, did not change the RhoA, RhoB and RhoC signalings, but significantly increased the expression and activity of Rho-associated kinase 1/2 (ROCK1/2)...
September 15, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28922476/semiconducting-polymer-nanoparticles-for-centimeters-deep-photoacoustic-imaging-in-the-second-near-infrared-window
#8
Jiayingzi Wu, Liyan You, Lu Lan, Hyeon Jeong Lee, Saadia T Chaudhry, Rui Li, Ji-Xin Cheng, Jianguo Mei
Thienoisoindigo-based semiconducting polymer with a strong near-infrared absorbance is synthesized and its water-dispersed nanoparticles (TSPNs) are investigated as a contrast agent for photoacoustic (PA) imaging in the second near-infrared (NIR-II) window (1000-1350 nm). The TSPNs generate a strong PA signal in the NIR-II optical window, where background signals from endogenous contrast agents, including blood and lipid, are at the local minima. By embedding a TSPN-containing tube in chicken-breast tissue, an imaging depth of more than 5 cm at 1064 nm excitation is achieved with a contrast-agent concentration as low as 40 µg mL(-1) ...
September 18, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28922374/fractional-laser-exposure-induces-neutrophil-infiltration-n1-phenotype-into-the-tumor-and-stimulates-systemic-anti-tumor-immune-response
#9
Masayoshi Kawakubo, Shadmehr Demehri, Dieter Manstein
BACKGROUND: Ablative fractional photothermolysis (aFP) using a CO2 laser generates multiple small diameter tissue lesions within the irradiation field. aFP is commonly used for a wide variety of dermatological indications, including treatment of photodamaged skin and dyschromia, drug delivery and modification of scars due to acne, surgical procedures and burns. In this study we explore the utility of aFP for treating oncological indications, including induction of local tumor regression and inducing anti-tumor immunity, which is in marked contrast to current indications of aFP...
2017: PloS One
https://www.readbyqxmd.com/read/28922244/fibular-graft-effective-panorama-for-prosthetic-rehabilitation-of-resected-mandible
#10
Pankaj Kharade, Saidul Islam, Mahesh Verma, Swati Sharma, Ranjeet Bodh
Surgical management of extensive tumors in the mandibular region leads to massive disfigurement of the face. Also the prosthetic outcome of such patients rehabilitated with free soft tissue flaps is very poor. Reconstruction of extensive defects to overcome the disfigurement is a challenging procedure and can be achieved with free fibula flap. Free fibula graft provides sufficient length of bone for the reconstruction of the postsurgical defects. Excellent vascularity of fibula flap allows for easy uptake of the graft and osseointegration of the dental implants...
September 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28921872/first-line-therapy-with-dacomitinib-an-orally-available-pan-her-tyrosine-kinase-inhibitor-for-locally-advanced-or-metastatic-penile-squamous-cell-carcinoma-results-of-an-open-label-single-arm-single-center-phase-2-study
#11
A Necchi, S Lo Vullo, F Perrone, D Raggi, P Giannatempo, G Calareso, N Nicolai, L Piva, D Biasoni, M Catanzaro, T Torelli, S Stagni, E Togliardi, M Colecchia, A Busico, A Gloghini, A Testi, L Mariani, R Salvioni
OBJECTIVE: To harness the frontline therapy in advanced penile squamous cell carcinoma (PSCC), for which chemotherapy exerts moderate activity but poor efficacy. Dacomitinib is an irreversible, pan-epidermal growth factor receptor (HER) inhibitor. PATIENTS AND METHODS: In a phase 2 study (NCT01728233), patients received dacomitinib 45 mg/day, orally, continuously. Inclusion criteria were SCC histology, clinical stage N2-3 or M1 (TNM 2009), and no prior chemotherapy administration...
September 16, 2017: BJU International
https://www.readbyqxmd.com/read/28921580/integrating-prior-information-into-microwave-tomography-part-1-impact-of-detail-on-image-quality
#12
Douglas Kurrant, Anastasia Baran, Joe LoVetri, Elise Fear
PURPOSE: The authors investigate the impact that incremental increases in the level of detail of patient-specific prior information have on image quality and the convergence behavior of an inversion algorithm in the context of near-field microwave breast imaging. A methodology is presented that uses image quality measures to characterize the ability of the algorithm to reconstruct both internal structures and lesions embedded in fibroglandular tissue. The approach permits key aspects that impact the quality of reconstruction of these structures to be identified and quantified...
September 17, 2017: Medical Physics
https://www.readbyqxmd.com/read/28919783/toll-like-receptors-7-and-8-expression-correlates-with-the-expression-of-immune-biomarkers-and-positively-predicts-the-clinical-outcome-of-patients-with-melanoma
#13
Moucheng Zhang, Zhilong Yan, Junjiang Wang, Xueqing Yao
BACKGROUND: Toll-like receptors (TLRs) play a critical role in cancer, yet the clinical relevance of TLR7/8 expression in melanoma remains unclear. This study aimed to evaluate the prognostic value of TLR7/8 mRNA levels in melanoma and their correlation with immune biomarkers relevant to disease progression. METHODS: Normalized gene expression and corresponding clinical data of patients with skin cutaneous melanoma were obtained from two public databases: the Cancer Genome Atlas and GSE19234...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28919418/the-nampt-e2f2-sirt1-axis-promotes-proliferation-and-inhibits-p53-dependent-apoptosis-in-human-melanoma-cells
#14
Hailong Zhao, Weiwei Tang, Xiaowen Chen, Siyu Wang, Xianyan Wang, Haiyan Xu, Lijuan Li
Melanoma is the most common primary malignant neoplasm in adults, causing more deaths than any other skin cancer, necessitating the development of new target-based approaches. Current evidence suggests SIRT1, the mammalian nicotinamide adenine dinucleotide (NAD(+))-dependent protein deacetylase, and nicotinamide phosphoribosyltransferase (NAMPT), the rate-limiting NAD(+) biosynthetic enzyme, together comprise a novel systemic regulatory network to play a pivotal role in cell proliferation and apoptosis. Nevertheless, how the regulation of this cofactor interfaces with signal transduction network remains poorly understood in melanoma...
September 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28918995/cutaneous-adverse-events-of-targeted-therapies-for-hematolymphoid-malignancies
#15
REVIEW
Julia D Ransohoff, Bernice Y Kwong
The identification of oncogenic drivers of liquid tumors has led to the rapid development of targeted agents with distinct cutaneous adverse event (AE) profiles. The diagnosis and management of these skin toxicities has motivated a novel partnership between dermatologists and oncologists in developing supportive oncodermatology clinics. In this article we review the current state of knowledge of clinical presentation, mechanisms, and management of the most common and significant cutaneous AEs observed during treatment with targeted therapies for hematologic and lymphoid malignancies...
July 14, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28916993/periostin-in-the-pathogenesis-of-skin-diseases
#16
REVIEW
Hiroyuki Murota, Yang Lingli, Ichiro Katayama
Skin is an organ that is susceptible to damage by external injury, chronic inflammation, and autoimmunity. Tissue damage causes alterations in both the configuration and type of cells in lesional skin. This phenomenon, called tissue remodeling, is a universal biological response elicited by programmed cell death, inflammation, immune disorders, and tumorigenic, tumor proliferative, and cytoreductive activity. In this process, changes in the components of the extracellular matrix are required to provide an environment that facilitates tissue remodeling...
September 15, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28916952/air-electron-stream-interactions-during-magnetic-resonance-igrt-skin-irradiation-outside-the-treatment-field-during-accelerated-partial-breast-irradiation
#17
Jong Min Park, Kyung Hwan Shin, Jung-In Kim, So-Yeon Park, Seung Hyuck Jeon, Noorie Choi, Jin Ho Kim, Hong-Gyun Wu
PURPOSE: To investigate and to prevent irradiation outside the treatment field caused by an electron stream in the air generated by the magnetic field during magnetic resonance image-guided accelerated partial breast irradiation (APBI). MATERIALS AND METHODS: In all, 20 patients who received APBI with a magnetic resonance image-guided radiation therapy (MR-IGRT) system were prospectively studied. The prescription dose was 38.5 Gy in 10 fractions of 3.85 Gy and delivered with a tri-cobalt system (the ViewRay system)...
September 15, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28916781/6-bromo-indirubin-3-oxime-6bio-a-glycogen-synthase-kinase-3%C3%AE-inhibitor-activates-cytoprotective-cellular-modules-and-suppresses-cellular-senescence-mediated-biomolecular-damage-in-human-fibroblasts
#18
Aimilia D Sklirou, Nicolas Gaboriaud-Kolar, Issidora Papassideri, Alexios-Leandros Skaltsounis, Ioannis P Trougakos
As genetic interventions or extended caloric restriction cannot be applied in humans, many studies have been devoted to the identification of natural products that can prolong healthspan. 6-bromoindirubin-3'-oxime (6BIO), a hemi-synthetic derivative of indirubins found in edible mollusks and plants, is a potent inhibitor of Glycogen synthase kinase 3β (Gsk-3β). This pleiotropic kinase has been implicated in various age-related diseases including tumorigenesis, neurodegeneration and diabetes. Accordingly, 6BIO has shown anti-tumor and anti-neurodegenerative activities; nevertheless, the potential role of 6BIO in normal human cells senescence remains largely unknown...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28915833/deltopectoral-flap-revisited-for-reconstruction-surgery-in-patients-with-advanced-thyroid-cancer-a-case-report
#19
Taro Mikami, Shintaro Kagimoto, Yuichiro Yabuki, Kazunori Yasumura, Toshinori Iwai, Jiro Maegawa, Nobuyasu Suganuma, Shohei Hirakawa, Katsuhiko Masudo
BACKGROUND: We present the cases of 2 patients with invasive thyroid cancer, who underwent reconstructive surgery using a deltopectoral flap. Although the overall rate of extrathyroidal extension in patients with thyroid cancer is quite low, skin invasion is the most common pattern observed. Reconstructive surgery, involving local skin flaps, is required in these patients. The deltopectoral flap relies on the blood supply from intercostal perforators of the internal thoracic artery and usually requires skin grafting to the donor site...
September 15, 2017: BMC Surgery
https://www.readbyqxmd.com/read/28915692/biomarker-analysis-of-the-phase-3-torch-trial-for-first-line-erlotinib-versus-chemotherapy-in-advanced-non-small-cell-lung-cancer-patients
#20
Lucia Kim, Mauro Saieg, Massimo Di Maio, Ciro Gallo, Charles Butts, Fortunato Ciardiello, Ronald Feld, Dengxiao Cheng, Vittorio Gebbia, Marco Angelo Burgio, Yasmin Alam, Simona Signoriello, Antonio Rossi, Natasha Leighl, Paolo Maione, Alessandro Morabito, Geoffrey Liu, Ming-Sound Tsao, Francesco Perrone, Cesare Gridelli
BACKGROUND: The TORCH phase III trial compared the efficacy of first-line erlotinib followed by chemotherapy at progression (experimental arm) with the reverse sequence (standard arm) in unselected advanced non-small cell lung cancer (NSCLC) patients. Here we report biomarker analyses. METHODS: EGFR and KRAS mutation, expression of EGFR family members and of cMET and PTEN and EGFR and ABCG2 germline polymorphisms were tested on tumor tissue or blood samples to either confirm previously proposed predictive role or describe it in an explorative setting...
August 22, 2017: Oncotarget
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