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https://www.readbyqxmd.com/read/29233790/preclinical-evidence-for-combined-use-of-aromatase-inhibitors-and-nsaids-as-preventive-agents-of-tobacco-induced-lung-cancer
#1
Laura P Stabile, Mariya Farooqui, Beatriz Kanterewicz, Shira Abberbock, Brenda F Kurland, Brenda Diergaarde, Jill M Siegfried
INTRODUCTION: A hormonal role in non-small cell lung cancer (NSCLC) development is well documented. We previously showed that the aromatase inhibitor (AI) anastrozole decreased the development of tobacco carcinogen-induced lung tumors in a murine lung cancer prevention model and that aromatase and estrogen receptor (ER) were expressed in pulmonary inflammatory cells. METHODS: We utilized a tobacco carcinogen-induced lung tumor mouse model [4-(methylnitrosoamino)-1-(3-pyridyl)-1-butanone (NNK)] to determine whether an AI combined with non-steroidal anti-inflammatory drugs (NSAIDs) results in greater lung tumor prevention effects than single agent treatment...
December 9, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29230610/predictive-value-of-vascular-endothelial-growth-factor-receptor-type-2-in-triple-negative-breast-cancer-patients-treated-with-neoadjuvant-chemotherapy
#2
Nataliya Babyshkina, Marina Zavyalova, Natalia Tarabanovskaya, Tatyana Dronova, Nadejda Krakhmal, Elena Slonimskaya, Julia Kzhyshkowska, Evgeny Choynzonov, Nadejda Cherdyntseva
The identification of informative biomarkers that could predict the treatment response is particularly important in the triple-negative (TN) breast cancer, which is characterized by biological diversity. The aim of this study was to investigate the impact of vascular endothelial growth factor receptor (VEGFR2) expression and its gene polymorphisms on pathologic complete response (pCR) to neoadjuvant chemotherapy (NCT) in Russian patients with TN breast cancer. We performed a retrospective analysis of 70 women with operable TN breast cancer, who underwent NCT with 5-fluorouracil, adriamycin, and cyclophosphamide (FAC) or cyclophosphamide, adriamycin, and capecitabine (CAX) between 2007 and 2013...
December 11, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29229628/nationwide-multicenter-study-on-the-management-of-pulmonary-neuroendocrine-carcinoid-tumors
#3
Samira Mercedes Sadowski, Emanuel Christ, Benoit Bedat, Attila Kollar, Wolfram Karenovics, Aurel Perren, Frederic Triponez
Background/ Aim: To analyze the management and outcome of patients with primary typical (TC) and atypical lung carcinoids (AC) in Switzerland. METHODS: Retrospective analysis of patients selected from a neuroendocrine tumor (NET) registry. Patients were divided into TC and AC according to pathology reports, and surgical procedures were grouped as wedge/ segmentectomy, lobectomy/ bi-lobectomy and pneumectomy. Survival analysis was performed using the Kaplan-Meier method and log-rank test...
December 11, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/29228411/management-of-breast-cancer-in-adjuvant-chemotherapy-settings-in-the-kanagawa-breast-oncology-group
#4
Mayako Terao, Naoki Niikura, Yasuhiro Suzuki, Norihiko Sengoku, Hitoshi Arioka, Takashi Ishikawa, Koichiro Tsugawa, Yutaka Tokuda
OBJECTIVE: Many different options for adjuvant chemotherapy are recommended in guidelines for the treatment of breast cancer. Therapeutic strategies vary among physicians. The major goals for this project were to gain a better understanding of how biomarkers are integrated into practice and how physicians select adjuvant chemotherapy. METHODS: We assembled a questionnaire with 23 example scenarios of breast cancer cases, including 6 items relevant to postoperative adjuvant therapy...
December 20, 2017: Tokai Journal of Experimental and Clinical Medicine
https://www.readbyqxmd.com/read/29228316/identification-of-a-critical-window-for-ganciclovir-induced-disruption-of-testicular-development-in-rats
#5
Katlyn Barp Meyer, Anderson Joel Martino Andrade, Amanda Caroline Venturelli, Diogo Henrique Kita, Dária Louise Barbosa Machado, Rafaela Adams Philipsen, Alluanan Adelson do Nascimento Silva, Isabelle Cantão, Davyson Moreira, Valdemiro Amaro da Silva Junior, Taiza Stumpp, Rosana Nogueira Morais
Ganciclovir (GCV) has been implicated in the development of testicular alterations. Exposure on gestational day (GD) 10 in rats induced permanent effects, including focal reduction or absence of germ cells (Sertoli cell-only tubules). Because the timing of exposure can be critical for testicular effects, we exposed rat dams to 300 mg/kg GCV (three 100mg/kg subcutaneous injections) on GD10, 14 and 19, when germ cells have high rates of migration, proliferation and are mitotically quiescent, respectively. Males exposed to GCV in utero on GD10 and 14 were evaluated for androgenization markers, serum and fecal androgens, and testicular histomorphometry at adulthood...
December 7, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29228136/cd177-neutrophils-suppress-epithelial-cell-tumourigenesis-in-colitis-associated-cancer-and-predict-good-prognosis-in-colorectal-cancer
#6
Guangxi Zhou, Kangsheng Peng, Yang Song, Wenjing Yang, Weigang Shu, Tianming Yu, Lin Yu, Moubin Lin, Qing Wei, Chunqiu Chen, Lu Yin, Yingzi Cong, Zhanju Liu
Neutrophils are found to be infiltrated in tumour tissues of patients with colitis-associated cancer (CAC) and colorectal cancer (CRC), and CD177 is mainly expressed in neutrophils. In our study, expression of CD177 in tumour tissues from patients with CAC or CRC was analysed by qRT-PCR, flow cytometry, and immunohistochemistry. We recruited 378 patients with CRC, determined CD177 expression in tumours, and examined its correlation with clinicopathological features. Moreover, CAC model was induced in wild type (WT) and CD177-/- mice by azoxymethane (AOM)/dextran sodium sulfate (DSS)...
December 8, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/29226322/mir-1290-promotes-proliferation-migration-and-invasion-of-glioma-cells-by-targeting-lhx6
#7
Lei Yan, Kai Sun, Yang Liu, Jun Liang, Kerui Cai, Jinqiu Gui
OBJECTIVE: To investigate the interaction of miR-1290 and LHX6 in gliomas, and their influence on the propagation and metastasis of glioma cells. METHODS: The differential expression of miR-1290 in glioma cells was identified by chip screening. The expression level of miR-1290 and LHX6 were determined by qRT-PCR and western blot. The influence of miR-1290 on propagation of glioma cells were analyzed by MTT assay, EdU incorporation and colony formation, while the impact of miR-1290 on metastasis was assessed by transwell assay...
December 11, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29222447/structural-abnormalities-in-islets-from-very-young-children-with-cystic-fibrosis-may-contribute-to-cystic-fibrosis-related-diabetes
#8
Marika Bogdani, Scott M Blackman, Cecilia Ridaura, Jean-Pierre Bellocq, Alvin C Powers, Lydia Aguilar-Bryan
Cystic fibrosis (CF)-related diabetes (CFRD) is thought to result from beta-cell injury due in part to pancreas exocrine damage and lipofibrosis. CFRD pancreata exhibit reduced islet density and altered cellular composition. To investigate a possible etiology, we tested the hypothesis that such changes are present in CF pancreata before the development of lipofibrosis. We evaluated pancreas and islet morphology in tissues from very young CF children (<4 years of age), and adult patients with CF and CFRD...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29221447/disruption-of-postnatal-folliculogenesis-and-development-of-ovarian-tumor-in-a-mouse-model-with-aberrant-transforming-growth-factor-beta-signaling
#9
Yang Gao, Xin Fang, David F Vincent, David W Threadgill, Laurent Bartholin, Qinglei Li
BACKGROUND: Transforming growth factor beta (TGFB) superfamily signaling is implicated in the development of sex cord-stromal tumors, a category of poorly defined gonadal tumors. The aim of this study was to determine potential effects of dysregulated TGFB signaling in the ovary using Cre recombinase driven by growth differentiation factor 9 (Gdf9) promoter known to be expressed in oocytes. METHODS: A mouse model containing constitutively active TGFBR1 (TGFBR1CA) using Gdf9-iCre (termed TGFBR1-CAG9Cre) was generated...
December 8, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29220358/minimally-invasive-monitoring-of-cd4-t-cells-at-multiple-mucosal-tissues-after-intranasal-vaccination-in-rhesus-macaques
#10
Stephanie Dorta-Estremera, Pramod N Nehete, Guojun Yang, Hong He, Bharti P Nehete, Kathryn K Shelton, Michael A Barry, K Jagannadha Sastry
Studies in nonhuman primates (NHP) for prospective immune cell monitoring subsequent to infection and/or vaccination usually rely on periodic sampling of the blood samples with only occasional collections of biopsies from mucosal tissues because of safety concerns and practical constraints. Here we present evidence in support of cytobrush sampling of oral, rectal, and genital mucosal tissues as a minimally invasive approach for the phenotypic analyses of different T cells subsets de novo as well as prospectively after intranasal immunization in rhesus macaques...
2017: PloS One
https://www.readbyqxmd.com/read/29220095/digital-image-analysis-of-ki67-in-hot-spots-is-superior-to-both-manual-ki67-and-mitotic-counts-in-breast-cancer
#11
Gustav Stålhammar, Stephanie Robertson, Lena Wedlund, Michael Lippert, Mattias Rantalainen, Jonas Bergh, Johan Hartman
AIMS: During pathological examination of breast tumours, proliferative activity is routinely evaluated by a count of mitoses. Adding immunohistochemical stains of Ki67 provides extra prognostic and predictive information. However, currently used methods for these evaluations suffer from imperfect reproducibility. It is still unclear whether analysis of Ki67 should be performed in hot spots, in the tumour periphery or as an average of the whole tumour section. In this paper, we compare the clinical relevance of mitoses, Ki67 and Phosphohistone H3 in two cohorts of primary breast cancer specimens (total n=294)...
December 8, 2017: Histopathology
https://www.readbyqxmd.com/read/29218012/anti-tumor-effect-of-rhaponticum-uniflorum-ethyl-acetate-extract-by-regulation-of-peroxiredoxin1-and-epithelial-to-mesenchymal-transition-in-oral-cancer
#12
Hui Chen, Chunxiao Wang, Moci Qi, Lihua Ge, Zhenchuan Tian, Jinhua Li, Min Zhang, Min Wang, Linfang Huang, Xiaofei Tang
Objective: To explore whether Rhaponticum uniflorum (R. uniflorum) had anti-tumor effects in oral cancer and investigate the molecular mechanisms involved in these anti-tumor effects. Methods: Chemical compositions of R. uniflorum ethyl acetate (RUEA) extracts were detected by ultra-performance liquid chromatography-Q/time-of-flight mass spectrometry (UPLC-Q/TOF-MS), followed by pharmacology-based network prediction analysis. The effects of RUEA extracts on proliferation, apoptosis, migration, and invasion ability of human oral squamous cell carcinoma (OSCC) cell line SCC15 were evaluated by CCK8 assay, Annexin V- fluorescein isothiocyanate/propidium iodide staining, wound healing assay, and Matrigel invasion assay, respectively...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29217733/sex-as-a-biological-variable-in-preclinical-imaging-research-initial-observations-with-18f-fluorothymidine
#13
Szeman Ruby Chan, Kelley Salem, Justin Jeffery, Ginny L Powers, Yongjun Yan, Kooresh I Shoghi, Aparna M Mahajan, Amy M Fowler
The study objective was to investigate whether sex influences 3'-deoxy-3'-[18F]fluorothymidine (18F-FLT) uptake and tissue distribution in mouse models of cancer. Methods:18F-FLT biodistribution was measured in three strains of male and female mice (129S6/SvEv, athymic nude, and BALB/c). 18F-Fluoro-2-deoxy-2-D-glucose (18F-FDG) biodistribution was performed for comparison. 18F-FLT uptake was also measured in female 129S6/SvEv mice bearing estrogen-dependent SSM3 mouse mammary tumors, male athymic nude mice bearing androgen-dependent CWR22 prostate cancer xenografts, and male and female athymic nude mice bearing estrogen-independent MDA-MB-231 human breast cancer xenografts...
December 7, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29214214/molecular-changes-in-premenopausal-oestrogen-receptor-positive-primary-breast-cancer-in-vietnamese-women-after-oophorectomy
#14
Ben P Haynes, Ophira Ginsburg, Qiong Gao, Elizabeth Folkerd, Maria Afentakis, Le Hong Quang, Pham Thi Han, Pham Hong Khoa, Nguyen Van Dinh, Ta Van To, Mark Clemons, Ian E Smith, Mitch Dowsett
For premenopausal women with primary ER + breast cancer, oophorectomy (OvX) is an evidence-based cost-effective option and is standard treatment in many countries. However, there is virtually no data describing the effects of OvX on breast tumour biology. We therefore, characterised the endocrine and genome-wide transcriptional impact of OvX in 56 premenopausal women with ER + breast cancer for 2 weeks prior to mastectomy. Plasma estradiol concentrations decreased from 406 ± 41 to 20.7 ± 2...
2017: NPJ Breast Cancer
https://www.readbyqxmd.com/read/29213108/the-potential-therapeutic-effect-of-melatonin-on-human-ovarian-cancer-by-inhibition-of-invasion-and-migration-of-cancer-stem-cells
#15
Maryam Akbarzadeh, Ali Akbar Movassaghpour, Hossein Ghanbari, Maryam Kheirandish, Nazila Fathi Maroufi, Reza Rahbarghazi, Mohammad Nouri, Nasser Samadi
There is an urgent need to identify targeting molecules to control invasion and metastasis in cancer patients. We first isolated cancer stem cells (CSCs) from SKOV3 ovarian cancer cells and then investigated the role of melatonin in invasiveness and migration of CSCs compared to SKOV3 cells. The proportion of CSCs in SKOV3 cells was as low as 1.28% with overexpression of both CD133 and CD44. The ability of spheroid formation along with SOX2 overexpression revealed a high self-renewal potential in isolated cells...
December 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29212855/t-cell-densities-in-brain-metastases-are-associated-with-patient-survival-times-and-diffusion-tensor-mri-changes
#16
Rasheed Zakaria, Angela Platt-Higgins, Nitika Rathi, Mark Radon, Sumit Das, Kumar Das, Maneesh Bhojak, Andrew Brodbelt, Emmanuel Chavredakis, Michael D Jenkinson, Philip S Rudland
Brain metastases are common and are usually detected by magnetic resonance imaging (MRI). Diffusion tensor imaging (DTI) is a derivative MRI technique which can detect disruption of white matter tracts in the brain. We have matched preoperative DTI with image-guided sampling of the brain-tumor interface in 26 patients during resection of a brain metastasis and assessed mean diffusivity (MD) and fractional anisotropy (FA). The tissue samples were analysed for vascularity, inflammatory cell infiltration, growth pattern, and tumor expression of proteins associated with growth or local invasion such as Ki67, S100A4, and MMP2, 9, and 13...
December 6, 2017: Cancer Research
https://www.readbyqxmd.com/read/29212204/myc-overexpression-with-its-prognostic-and-clinicopathological-significance-in-breast-cancer
#17
Jingkun Qu, Xixi Zhao, Jizhao Wang, Xu Liu, Yan Yan, Lin Liu, Hui Cai, Hangying Qu, Ning Lu, Yuchen Sun, Feidi Wang, Jiansheng Wang, Jia Zhang
Background: Proto-oncogene MYC has been indicated to promote progression of many cancers. However, prognostic and clinicopathological significance of MYC in breast cancer need further evaluation. Methods: We searched EMBASE and PubMed databases to find useful studies. We analyzed relationships between high MYC expression and prognostic data/ clinicopathological features through hazard ratio (HR) and odds ratio (OR). Each statistical test was two-sided. Results: There were 29 studies (36 cohorts) with 12621 patients enrolled in our study The MYC overexpression was associated with worse DFS/RFS (disease/relapse free survival) in 11 studies (16 cohorts) with 5390 patients, and OS (overall survival) of 7 studies (8 cohorts) with 2672 patients...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29209567/dendritic-cells-pulsed-with-tumor-cells-killed-by-high-hydrostatic-pressure-inhibit-prostate-tumor-growth-in-tramp-mice
#18
Romana Mikyskova, Marie Indrova, Ivan Stepanek, Ivan Kanchev, Jana Bieblova, Sarka Vosahlikova, Irena Moserova, Iva Truxova, Jitka Fucikova, Jirina Bartunkova, Radek Spisek, Radislav Sedlacek, Milan Reinis
Dendritic cell (DC)-based vaccines pulsed with high hydrostatic pressure (HHP)-inactivated tumor cells have recently been shown to be a promising tool for prostate cancer chemoimmunotherapy. In this study, DC-based vaccines, both pulsed and unpulsed, were as effective as docetaxel (DTX) in reducing prostate tumors in the orthotopic transgenic adenocarcinoma of the mouse prostate (TRAMP) model. However, we did not observe any additive or synergic effects of chemoimmunotherapy on the tumor growth, while only the combination of DTX and pulsed dendritic cells resulted in significantly lower proliferation detected by Ki67 staining in histological samples...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29207991/investigation-of-c-kit-and-ki67-expression-in-normal-preneoplastic-and-neoplastic-canine-prostate
#19
Carlos Eduardo Fonseca-Alves, Priscilla Emiko Kobayashi, Chiara Palmieri, Renée Laufer-Amorim
BACKGROUND: c-KIT expression has been related to bone metastasis in human prostate cancer, but whether c-KIT expression can be similarly classified in canine prostatic tissue is unknown. This study assessed c-KIT and Ki67 expression in canine prostate cancer (PC). c-KIT gene and protein expression and Ki67 expression were evaluated in forty-four canine prostatic tissues by immunohistochemistry, RT-qPCR and western blot. Additionally, we have investigated c-KIT protein expression by immunoblotting in two primary canine prostate cancer cell lines...
December 6, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29207777/an-aggressive-primary-retroperitoneal-diffuse-large-b-cell-lymphoma-mimicking-a-pancreatic-neoplasm-presenting-as-duodenal-stenosis
#20
Bharadhwaj Ravindhran, Clement Prakash, Sridar Govindharaj, Noor Mohammed Shawnaz Bahnou, B Pavithra
Diffuse Large B-Cell Lymphoma (DLBCL) is the most common histological subtype of Non-Hodgkin's Lymphoma (NHL). Primary retroperitoneal DLBCL is uncommon and has seldom been reported. Extrinsic compression of the duodenum due to lesions originating from the retroperitoneum is also rare. We present a case of a 39-year-old man who presented with inability to tolerate oral intake, abdominal pain, an upper abdominal mass and postprandial bilious vomiting caused by a large DLBCL arising from the retroperitoneum causing extrinsic compression of the duodenum...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
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