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https://www.readbyqxmd.com/read/28323914/menopause-is-a-determinant-of-breast-aromatase-expression-and-its-associations-with-bmi-inflammation-and-systemic-markers
#1
Kristy A Brown, Neil M Iyengar, Xi Kathy Zhou, Ayca Gucalp, Kotha Subbaramaiah, Hanhan Wang, Dilip D Giri, Monica Morrow, Domenick J Falcone, Nils K Wendel, Lisle A Winston, Michael Pollak, Anneloor Dierickx, Clifford A Hudis, Andrew J Dannenberg
CONTEXT: Most estrogen-dependent breast cancers occur after menopause despite low levels of circulating estrogens. Breast expression of the estrogen-biosynthetic enzyme, aromatase, is proposed to drive breast cancer development after menopause. However, the effects of menopause on breast aromatase expression are unknown. OBJECTIVE: To determine the effect of menopause on breast aromatase expression in relation to body mass index (BMI), white adipose tissue inflammation (WATi) and systemic markers of metabolic dysfunction...
February 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28322389/alteration-of-pancreatic-carcinoma-and-promyeloblastic-cell-adhesion-in-liver-microvasculature-by-co-culture-of-hepatocytes-hepatic-stellate-cells-and-endothelial-cells-in-a-physiologically-relevant-model
#2
Mathieu Danoy, Marie Shinohara, Astia Rizki-Safitri, Dominique Collard, Vincent Senez, Yasuyuki Sakai
In vitro models of the liver microvasculature, especially with respect to cancer cell extravasation, should include not only endothelial and cancer cells but also surrounding cells to mimic the physiological situation. To this end, in the present study, we established a physiologically-relevant hierarchical co-culture model by stacking layers of primary rat hepatocytes (Hep), hepatic stellate cells embedded in collagen gel (LX-2) and endothelial cells (HUVECs) on a specially designed oxygen-permeable polydimethylsiloxane PDMS bottom plate...
March 21, 2017: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://www.readbyqxmd.com/read/28321344/pituitary-adenoma-and-hyperprolactinemia-accompanied-by-idiopathic-granulomatous-mastitis
#3
Sebahattin Destek, Vahit Onur Gul, Serkan Ahioglu, Kursat Rahmi Serin
Idiopathic granulomatous mastitis (IGM) is a rare chronic inflammatory disease of the breast, and its etiology remains not fully elucidated. IGM is observed more often in patients with autoimmune disease. Hyperprolactinemia is observed during pregnancy, lactation, and a history of oral contraceptive use. A 39-year-old patient with no history of oral contraceptive use presented with complaints such as redness, pain, and swelling in her left breast. Ultrasound and magnetic resonance imaging (MRI) revealed a suspicious inflamed mass lesion...
2017: Case Reports in Endocrinology
https://www.readbyqxmd.com/read/28301579/a-novel-model-of-colitis-associated-cancer-in-samp1-yitfc-mice-with-crohn-s-disease-like-ileitis
#4
Paola Menghini, Luca Di Martino, Loris R Lopetuso, Daniele Corridoni, Joshua C Webster, Wei Xin, Kristen O Arseneau, Minh Lam, Theresa T Pizarro, Fabio Cominelli
Patients with inflammatory bowel disease (IBD) are at increased risk for developing colorectal cancer. Evidence suggests that colonic dysplasia and colitis-associated cancer (CAC) are often linked to repeated cycles of epithelial cell injury and repair in the context of chronic production of inflammatory cytokines. Several mouse models of CAC have been proposed, including chemical induction through exposure to dextran sulfate sodium (DSS) with the genotoxic agents azoxymethane (AOM), 1,2-dymethylhydrazine (DHM) or targeted genetic mutations...
2017: PloS One
https://www.readbyqxmd.com/read/28300057/combined-toll-like-receptor-3-7-9-deficiency-on-host-cells-results-in-t-cell-dependent-control-of-tumour-growth
#5
Johanna C Klein, Katrin Moses, Gennadiy Zelinskyy, Simon Sody, Jan Buer, Stephan Lang, Iris Helfrich, Ulf Dittmer, Carsten J Kirschning, Sven Brandau
Toll-like receptors (TLRs) are located either on the cell surface or intracellularly in endosomes and their activation normally contributes to the induction of protective immune responses. However, in cancer their activation by endogenous ligands can modulate tumour progression. It is currently unknown how endosomal TLRs regulate endogenous anti-tumour immunity. Here we show that TLR3, 7 and 9 deficiencies on host cells, after initial tumour growth, result in complete tumour regression and induction of anti-tumour immunity...
March 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28295534/mucin-rich-variant-of-traditional-serrated-adenoma-mrtsa-a-distinct-morphological-variant
#6
Sangeetha N Kalimuthu, Stefano Serra, Sara Hafezi-Bakhtiari, Richard Colling, Lai Mun Wang, Runjan Chetty
Traditional serrated adenomas (TSAs) account for 5% of serrated polyps, have villiform architecture, eosinophilic cells with a brush border and indented, flat-topped luminal serrations. However, some are composed of mucin-filled goblet cells (GC): a mucin-rich variant (MrTSA). The aim of this study was to determine if this variant has unique features compared to classic TSA (cTSA). 156 TSAs were retrieved from 2010-2016. Patient demographics, site of polyps, and 16 microscopic variables, were evaluated. TSAs containing 50% or more GCs were classified as MrTSAs...
March 13, 2017: Histopathology
https://www.readbyqxmd.com/read/28289089/molecular-pathways-oncologic-pathways-and-their-role-in-t-cell-exclusion-and-immune-evasion-a-new-role-for-the-axl-receptor-tyrosine-kinase
#7
Todd A Aguilera, Amato J Giaccia
With the clinical impact of CTLA-4 and PD-1/PD-L1 immune checkpoint therapies, widespread interest in cancer immunotherapy has been ignited. However, the rate and extent of clinical responses to approved therapies are limited and often non-existent in many solid tumors. This is partially because immune checkpoint therapies are most effective against T-cell inflamed tumors, and non-T-cell inflamed or T-cell excluded tumors remain a significant barrier. New strategies are needed to overcome immune resistance mechanisms that arise during tumor development which result in T-cell exclusion...
March 13, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28288326/a-hybrid-approach-to-appendicitis-with-right-external-iliac-artery-pseudo-aneurysm-a-case-report
#8
Benjamin T Chandler, Evan J Ryer, Benjamin M Keyser, James R Elmore
INTRODUCTION: While acute appendicitis is a common surgical problem, the simultaneous occurrence of appendicitis and an infected iliac artery pseudoaneurysm is exceedingly rare. We report the successful treatment of an infected right external iliac artery pseudo aneurysm in the 1setting of acute appendicitis. PRESENTATION OF CASE: The patient is an 83-year-old male who presents with severe sepsis, right lower quadrant and right leg pain. Additional past medical history is significant for rectal cancer status post resection and radiation therapy in 1997...
March 4, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28282455/dynamic-biochemical-tissue-analysis-detects-functional-l-selectin-ligands-on-colon-cancer-tissues
#9
Grady E Carlson, Eric W Martin, Venktesh S Shirure, Ramiro Malgor, Vicente A Resto, Douglas J Goetz, Monica M Burdick
A growing body of evidence suggests that L-selectin ligands presented on circulating tumor cells facilitate metastasis by binding L-selectin presented on leukocytes. Commonly used methods for detecting L-selectin ligands on tissues, e.g., immunostaining, are performed under static, no-flow conditions. However, such analysis does not assay for functional L-selectin ligands, specifically those ligands that promote adhesion under shear flow conditions. Recently our lab developed a method, termed dynamic biochemical tissue analysis (DBTA), to detect functional selectin ligands in situ by probing tissues with L-selectin-coated microspheres under hemodynamic flow conditions...
2017: PloS One
https://www.readbyqxmd.com/read/28258690/tam-receptor-tyrosine-kinases-as-emerging-targets-of-innate-immune-checkpoint-blockade-for-cancer-therapy
#10
REVIEW
Yemsratch T Akalu, Carla V Rothlin, Sourav Ghosh
Cancer immunotherapy utilizing T-cell checkpoint inhibitors has shown tremendous clinical success. Yet, this mode of treatment is effective in only a subset of patients. Unresponsive patients tend to have non-T-cell-inflamed tumors that lack markers associated with the activation of adaptive anti-tumor immune responses. Notably, elimination of cancer cells by T cells is critically dependent on the optimal activity of innate immune cells. Therefore, identifying new targets that regulate innate immune cell function and promote the engagement of adaptive tumoricidal responses is likely to lead to the development of improved therapies against cancer...
March 2017: Immunological Reviews
https://www.readbyqxmd.com/read/28246564/false-positive-findings-on-i-131-wbs-and-spect-ct-in-patients-with-history-of-thyroid-cancer-case-series
#11
Zeina C Hannoush, Juan D Palacios, Russ A Kuker, Sabina Casula
Introduction. Although whole body scan (WBS) with I-131 is a highly sensitive tool for detecting normal thyroid tissue and metastasis of differentiated thyroid cancer (DTC), it is not specific. Additional information, provided by single photon emission computed tomography combined with X-ray computed tomography (SPECT/CT) and by the serum thyroglobulin level, is extremely useful for the interpretation of findings. Case Presentation. We report four cases of false positive WBS in patients with DTC: ovarian uptake corresponding to an endometrioma, scrotal uptake due to a spermatocele, rib-cage uptake due to an old fracture, and hepatic and renal uptake secondary to a granuloma and simple cyst, respectively...
2017: Case Reports in Endocrinology
https://www.readbyqxmd.com/read/28242418/revisiting-structure-property-relationship-of-ph-responsive-polymers-for-drug-delivery-applications
#12
REVIEW
Salime Bazban-Shotorbani, Mohammad Mahdi Hasani-Sadrabadi, Akbar Karkhaneh, Vahid Serpooshan, Karl I Jacob, Alireza Moshaverinia, Morteza Mahmoudi
pH-responsive polymers contain ionic functional groups as pendants in their structure. The total number of charged groups on polymer chains determines the overall response of the system to changes in the external pH. This article reviews various pH-responsive polymers classified as polyacids (e.g., carboxylic acid based polymers, sulfonamides, anionic polysaccharides, and anionic polypeptides) and polybases (e.g., polyamines, pyridine and imidazole containing polymers, cationic polysaccharides, and cationic polypeptides)...
February 27, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28205614/cxcr2-deficient-mice-display-macrophage-dependent-exaggerated-acute-inflammatory-responses
#13
Douglas P Dyer, Kenneth Pallas, Laura Medina Ruiz, Fabian Schuette, Gillian J Wilson, Gerard J Graham
CXCR2 is an essential regulator of neutrophil recruitment to inflamed and damaged sites and plays prominent roles in inflammatory pathologies and cancer. It has therefore been highlighted as an important therapeutic target. However the success of the therapeutic targeting of CXCR2 is threatened by our relative lack of knowledge of its precise in vivo mode of action. Here we demonstrate that CXCR2-deficient mice display a counterintuitive transient exaggerated inflammatory response to cutaneous and peritoneal inflammatory stimuli...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28205428/systemically-infused-mesenchymal-stem-cells-show-different-homing-profiles-in-healthy-and-tumor-mouse-models
#14
Chengying Xie, Zhangru Yang, Yuanzhen Suo, Qianqian Chen, Dan Wei, Xiaofu Weng, Zhengqin Gu, Xunbin Wei
Bone marrow-derived mesenchymal stem cells (MSCs) can localize in injured, inflamed, and cancerous tissues after systemic infusion. However, the dynamic homing profile of MSCs in the peripheral blood is not well characterized. Here, using in vivo flow cytometry to noninvasively monitor the dynamics of fluorescence-labeled cells, we found different clearance kinetics of systemically infused MSCs between healthy and tumor mouse models. The circulation times of MSCs in healthy mice and mice with subcutaneous tumors, orthotopically transplanted liver tumors, or metastatic lung tumors were 30, 24, 18, and 12 hours, respectively, suggesting that MSCs actively home to tumor environments...
February 16, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28193514/microrna-301a-promotes-intestinal-inflammation-and-colitis-associated-cancer-development-by-inhibiting-btg1
#15
Chong He, Tianming Yu, Yan Shi, Caiyun Ma, Wenjing Yang, Leilei Fang, Mingming Sun, Wei Wu, Fei Xiao, Feifan Guo, Minhu Chen, Hong Yang, Jiaming Qian, Yingzi Cong, Zhanju Liu
BACKGROUND & AIMS: Intestinal tissues from patients with inflammatory bowel disease (IBD) and colorectal cancer have increased expression of microRNA-301a (MIR301A), compared to tissues from patients without IBD. We studied the mechanisms of MIR301A in progression of IBD in human tissues and mice. METHODS: We isolated intestinal epithelial cells (IECs) from colon biopsy samples of 153 patients with different stages of IBD activity, 6 patients with colitis-associated cancer (CAC), and 35 healthy individuals (controls), enrolled in the study in Shanghai, China...
February 10, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28174027/forkhead-box-p3-regulatory-t-cells-and-toll-like-receptor-2-co-expression-in-oral-squamous-cell-carcinoma
#16
H M Hussaini, V P B Parachuru, G J Seymour, A M Rich
BACKGROUND: The function of forkhead box-P3 (FoxP3) regulatory T cells (Treg) and toll-like receptor (TLR)2 protein in the oral cancer microenvironment is not fully understood, but evidence from other malignancies suggests it is likely they are involved with tumour development and progression. The aim of this study was to investigate the distribution of FoxP3(+)cells, TLR2(+) cells and double-labelled FoxP3(+)TLR2(+) immune cells in oral squamous cell carcinoma (OSCC), using immunohistochemistry (IHC) and immunofluorescence (IF)...
February 4, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28154246/steering-of-carcinoma-progression-by-the-yin-yang-interaction-of-stat1-stat3
#17
Karlheinz Friedrich, Helmut Dolznig, Xiaonan Han, Richard Moriggl
STAT1/STAT3 transcription factors are important regulators for development of normal, infected or inflammed cells. They are also critically involved in the progression of various malignant tumours, including epithelial-derived carcinomas. Here, we focus on colorectal cancer (CRC) insights for STAT1/3, where controversial functions for STAT3 were reported. For a long time STAT3 has been regarded as a driver of tumour malignancy and its activation was associated with negative clinical outcome. In contrast, STAT1 was generally viewed as an independent tumour suppressor and positive prognostic marker...
February 2, 2017: Bioscience Trends
https://www.readbyqxmd.com/read/28145512/tdag8-involved-in-initiating-inflammatory-hyperalgesia-and-establishing-hyperalgesic-priming-in-mice
#18
Shih-Ping Dai, Ya-Han Huang, Chung-Jen Chang, Yu-Fen Huang, Wei-Shan Hsieh, Yasuhiko Tabata, Satoshii Ishii, Wei-Hsin Sun
Chronic pain, resulting from injury, arthritis, and cancer, is often accompanied by inflammation. High concentrations of protons found in inflamed tissues results in tissue acidosis, a major cause of pain and hyperalgesia. Acidosis signals may mediate a transition from acute to chronic hyperalgesia (hyperalgesic priming) via proton-sensing G-protein-coupled receptors (GPCRs). The expression of T-cell death-associated gene 8 (TDAG8), a proton-sensing GPCR, is increased during inflammatory hyperalgesia. Attenuating TDAG8 expression in the spinal cord inhibits bone cancer pain, but whether TDAG8 is involved in inflammatory hyperalgesia or hyperalgesic priming remains unclear...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28125407/bioimpedance-measurements-in-dentistry-to-detect-inflammation-numerical-modelling-and-experimental-results
#19
Gloria Cosoli, Lorenzo Scalise, Gerardo Tricarico, Paola Russo, Graziano Cerri
Bioimpedance measurements represent an advantageous method to evaluate the physio-pathological conditions of biological tissues and their use is spreading in different application fields, from the evaluation of body composition to the vital signs monitoring, passing through the individuation of cancer tissues and the detection of different substances (e.g. glucose measurements in people affected by diabetes). In fact, tissues electric properties vary with their conditions; for example, electrical conductivity increases when there is an inflammatory process, because of the presence of oedema, hyperaemia and infiltration...
January 26, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28109322/adar1-overexpression-is-associated-with-cervical-cancer-progression-and-angiogenesis
#20
Ying Chen, He Wang, Wenyi Lin, Ping Shuai
BACKGROUND: This study aimed to assess the role of RNA-dependent adenosine deaminase (ADAR1) in cervical squamous cell carcinoma occurrence and progression. METHODS: ADAR1 expression levels in stage IA and stage IIA cervical squamous cell carcinoma (group A), cervical intraepithelial neoplasia (CIN) specimens (group B), as well as normal and inflamed cervical tissue samples (group C) were assessed by immunohistochemistry. Clinical and pathological data of cervical squamous cell carcinoma patients undergoing surgery were retrospectively evaluated...
January 21, 2017: Diagnostic Pathology
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