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https://www.readbyqxmd.com/read/28648008/-circulating-tumor-cells-in-patients-with-breast-tumors-were-detected-by-a-novel-device-a-multicenter-clinical-trial-in-china
#1
J B Li, C Z Geng, M Yan, Y S Wang, Q C Ouyang, Y M Yin, L N Wu, J He, Z F Jiang
Objective: Circulating tumor cells (CTC) have become an important part of liquid biopsy, which have underwent a process from simple counting to molecular typing and genotyping. To this end, we used Cellcollector to verify the effectiveness and safety of CTC detection in patients with breast tumor, and to conduct the following analysis. Methods: One hundred and ninety patients who received treatment in six leading Chinese cancer centers were involved from April to August in 2016. Among which, 127 patients were diagnosed as metastatic breast cancer, and the other 63 patients as benign breast tumors...
June 27, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28647906/exogenous-gdf11-induces-cardiac-and-skeletal-muscle-dysfunction-and-wasting
#2
Teresa A Zimmers, Yanling Jiang, Meijing Wang, Tiffany W Liang, Joseph E Rupert, Ernie D Au, Francesco E Marino, Marion E Couch, Leonidas G Koniaris
Growth differentiation factor 11 (GDF11), a TGF-beta superfamily member, is highly homologous to myostatin and essential for embryonic patterning and organogenesis. Reports of GDF11 effects on adult tissues are conflicting, with some describing anti-aging and pro-regenerative activities on the heart and skeletal muscle while others opposite or no effects. Herein, we sought to determine the in vivo cardiac and skeletal muscle effects of excess GDF11. Mice were injected with GDF11 secreting cells, an identical model to that used to initially identify the in vivo effects of myostatin...
July 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28647901/in-vivo-visualization-of-the-locus-coeruleus-in-humans-quantifying-the-test-retest-reliability
#3
Klodiana-Daphne Tona, Max C Keuken, Mischa de Rover, Egbert Lakke, Birte U Forstmann, Sander Nieuwenhuis, Matthias J P van Osch
The locus coeruleus (LC) is a brainstem nucleus involved in important cognitive functions. Recent developments in neuroimaging methods and scanning protocols have made it possible to visualize the human LC in vivo by utilizing a T1-weighted turbo spin echo (TSE) scan. Despite its frequent use and its application as a biomarker for tracking the progress of monoaminergic-related neurodegenerative diseases, no study to date has investigated the reproducibility and inter-observer variability of LC identification using this TSE scan sequence...
June 24, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28647883/casper-computer-aided-segmentation-of-imperceptible-motion-a-learning-based-tracking-of-an-invisible-needle-in-ultrasound
#4
Parmida Beigi, Robert Rohling, Septimiu E Salcudean, Gary C Ng
PURPOSE: This paper presents a new micro-motion-based approach to track a needle in ultrasound images captured by a handheld transducer. METHODS: We propose a novel learning-based framework to track a handheld needle by detecting microscale variations of motion dynamics over time. The current state of the art on using motion analysis for needle detection uses absolute motion and hence work well only when the transducer is static. We have introduced and evaluated novel spatiotemporal and spectral features, obtained from the phase image, in a self-supervised tracking framework to improve the detection accuracy in the subsequent frames using incremental training...
June 24, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28647857/ros-modulated-therapeutic-approaches-in-cancer-treatment
#5
REVIEW
Muhammad Hassan Raza, Sami Siraj, Abida Arshad, Usman Waheed, Fahad Aldakheel, Shatha Alduraywish, Muhammad Arshad
PURPOSE: Reactive oxygen species (ROS) are produced in cancer cells as a result of increased metabolic rate, dysfunction of mitochondria, elevated cell signaling, expression of oncogenes and increased peroxisome activities. Certain level of ROS is required by cancer cells, above or below which lead to cytotoxicity in cancer cells. This biochemical aspect can be exploited to develop novel therapeutic agents to preferentially and selectively target cancer cells. METHODS: We searched various electronic databases including PubMed, Web of Science, and Google Scholar for peer-reviewed english-language articles...
June 24, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28647853/are-podocytes-motile
#6
REVIEW
Nicole Endlich, Florian Siegerist, Karlhans Endlich
Podocytes, the postmitotic and highly branched epithelial cells of the glomerulus, play a pivotal role for the function of the glomerular filtration barrier and the development of chronic kidney disease. It has long been discussed whether podocytes in vivo are motile and can laterally migrate in a coordinated way along the capillaries until they reach the position of naked glomerular basement membrane often found in podocytopathies. Such motility would also be the prerequisite for the replacement of lost podocytes by progenitor cells...
June 24, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28647798/a-new-model-for-biofilm-formation-and-inflammatory-tissue-reaction-intraoperative-infection-of-a-cranial-implant-with-staphylococcus-aureus-in-rats
#7
Silke Glage, Silke Paret, Andreas Winkel, Meike Stiesch, André Bleich, Joachim K Krauss, Kerstin Schwabe
BACKGROUND: Implant failure is a severe and frequent adverse event in all areas of neurosurgery. It often involves infection with biofilm formation, accompanied by inflammation of surrounding tissue, including the brain, and bone loss. The most common bacteria involved are Staphylococcus aureus. We here test whether intraoperative infection of intracranial screws with Staphylococcus aureus would lead to biofilm formation and inflammatory tissue reaction in rats. METHODS: Two titanium screws were implanted in the cranium of Sprague-Dawley rats, anesthetized with xylazine (4 mg/kg) and ketamine (75 mg/kg)...
June 25, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28647773/cthrc1-promotes-osteogenic-differentiation-of-periodontal-ligament-stem-cells-by-regulating-taz
#8
Chengze Wang, Weiting Gu, Baiyu Sun, Yunpeng Zhang, Yawen Ji, Xin Xu, Yong Wen
Collagen triple helix repeat containing 1 (CTHRC1) is associated with bone metabolism. Alveolar bone has an ability to rapidly remodel itself to adapt its biomechanical environment and function. However, whether CTHRC1 is expressed in alveolar bone tissue and the role of CTHRC1 in alveolar bone remodeling remain unclear. We used orthodontic tooth movement (OTM) rat model to study the effects of CHTRC1 in alveolar bone remodeling in vivo. We found that CTHRC1 was expressed in normal physiological condition of osteocytes, bone matrix, and periodontal ligament cells in rat...
June 24, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28647733/role-of-mesenchymal-stem-cells-in-bone-regenerative-medicine-what-is-the-evidence
#9
Ahmad Oryan, Amir Kamali, Ali Moshiri, Mohamadreza Baghaban Eslaminejad
Healing and regeneration of bone injuries, particularly those that are associated with large bone defects, are a complicated process. There is growing interest in the application of osteoinductive and osteogenic growth factors and mesenchymal stem cells (MSCs) in order to significantly improve bone repair and regeneration. MSCs are multipotent stromal stem cells that can be harvested from many different sources and differentiated into a variety of cell types, such as preosteogenic chondroblasts and osteoblasts...
June 24, 2017: Cells, Tissues, Organs
https://www.readbyqxmd.com/read/28647731/recovery-of-vocal-fold-epithelium-after-acute-phonotrauma
#10
Bernard Rousseau, Tsuyoshi Kojima, Carolyn K Novaleski, Emily E Kimball, Carla V Valenzuela, Masanobu Mizuta, James J Daniero, C Gaelyn Garrett, M Preeti Sivasankar
We investigated the timeline of tissue repair of vocal fold epithelium after acute vibration exposure using an in vivo rabbit model. Sixty-five New Zealand white breeder rabbits were randomized to 120 min of modal- or raised-intensity phonation. After the larynges were harvested at 0, 4, 8, and 24 h, and at 3 and 7 days, the vocal fold tissue was evaluated using electron microscopy and quantitative real-time polymerase chain reaction. There was an immediate decrease in the microprojection depth and height following raised-intensity phonation, paired with upregulation of cyclooxygenase-2...
June 24, 2017: Cells, Tissues, Organs
https://www.readbyqxmd.com/read/28647695/the-warburg-effect-and-mass-spectrometry-based-proteomic-analysis
#11
REVIEW
Weidong Zhou, Lance A Liotta, Emanuel F Petricoin
Compared to normal cells, cancer cells have a unique metabolism by performing lactic acid fermentation in the presence of oxygen, also known as the Warburg effect. Researchers have proposed several hypotheses to elucidate the phenomenon, but the mechanism is still an enigma. In this review, we discuss three typical models, such as "damaged mitochondria", "adaptation to hypoxia", and "cell proliferation requirement", as well as contributions from mass spectrometry analysis toward our understanding of the Warburg effect...
July 2017: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/28647685/irtks-is-correlated-with-progression-and-survival-time-of-patients-with-gastric-cancer
#12
Li-Yu Huang, Xuefei Wang, Xiao-Fang Cui, He Li, Junjie Zhao, Chong-Chao Wu, Lingqiang Min, Zhicheng Zhou, Lixin Wan, Yu-Ping Wang, Chao Zhang, Wei-Qiang Gao, Yihong Sun, Ze-Guang Han
BACKGROUND AND OBJECTIVES: IRTKS functions as a novel regulator of tumour suppressor p53; however, the role of IRTKS in pathogenesis of gastric cancer is unclear. DESIGN: We used immunohistochemistry to detect IRTKS levels in 527 human gastric cancer specimens. We generated both IRTKS-deficient and p53-deficient mice to observe survival time of these mice and to isolate mouse embryonic fibroblasts (MEFs) for evaluating in vivo tumorigenicity. Co-immunoprecipitation was used to study the interaction among p53, MDM2 and IRTKS, as well as the ubiquitination of p53...
June 24, 2017: Gut
https://www.readbyqxmd.com/read/28647624/shape-memory-polyurethanes-with-oxidation-induced-degradation-in-vivo-and-in-vitro-correlations-for-endovascular-material-applications
#13
Andrew C Weems, Kevin T Wacker, James K Carrow, Anthony J Boyle, Duncan J Maitland
The synthesis of thermoset shape memory polymer (SMP) polyurethanes from symmetric, aliphatic alcohols and diisocyanates has previously demonstrated excellent biocompatibility in short term in vitro and in vivo studies, although long term stability has not been investigated. Here we demonstrate that while rapid oxidation occurs in these thermoset SMPs, facilitated by the incorporation of multi-functional, branching amino groups, byproduct analysis does not indicate toxicological concern for these materials...
June 21, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28647611/autophagy-suppresses-isoprenaline-induced-m2-macrophage-polarization-via-the-ros-erk-and-mtor-signaling-pathway
#14
Meihua Shan, Junfang Qin, Fengjiao Jin, Xiao Han, Haitao Guan, Xiaoge Li, Jiahui Zhang, Hongyao Zhang, Yue Wang
The objective of this study was to examine the effect of autophagy on stress-induced M2 macrophage polarization in the tumor microenvironment of breast cancer and to determine whether the underlying mechanism was related to the reactive oxygen species (ROS)/ERK and mTOR pathway. In vitro, we found that the basal autophagy level in mouse RAW 264.7 macrophages decreased with the incubation of tumor cell culture supernatant. Similarly, the polarization of RAW 264.7 to M2 macrophages was inhibited by the autophagy inducer rapamycin and increased by the autophagy inhibitor 3-MA or by siBeclin1...
June 21, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28647604/hydrogen-rich-water-induces-aluminum-tolerance-in-maize-seedlings-by-enhancing-antioxidant-capacities-and-nutrient-homeostasis
#15
Xueqiang Zhao, Qiuhong Chen, Yanmei Wang, Zhenguo Shen, Wenbiao Shen, Xiaoming Xu
The ameliorative effect of H2 on aluminum (Al)-induced stress remains poorly understood. We treated maize seedlings with Al and hydrogen-rich water (HRW) to determine the roles of H2 in the alleviation of Al toxicity. Our results demonstrated that Al stress triggered damage to the photosynthetic apparatus, plant growth inhibition, and reactive oxygen species (ROS) production, and boosted lipid peroxidation. However, the addition of HRW at 75% saturation markedly alleviated Al toxicity symptoms through the promotion of root elongation...
June 22, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28647592/liposphere-mediated-topical-delivery-of-thymoquinone-in-the-treatment-of-psoriasis
#16
Anjali Jain, P Venkatesh, Upendra Bulbake, Sindhu Doppalapudi, Towseef Amin Rafeeqi, Chandraiah Godugu, Wahid Khan
Thymoquinone (TMQ) is reported with good anti-psoriatic activity however, the hydrophobicity, poor aqueous solubility, light and pH sensitive nature of TMQ hinder its delivery to target site. To address these delivery challenges of TMQ, lipospheres were explored. The topical use of lipospheres offer an effective mean of penetration along with stability and scalability. TMQ lipospheres of particle size below 70nm were prepared and evaluated. These lipospheres resulted in deeper skin penetration, slow release and skin compatibility...
June 21, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28647591/chitosan-based-nanocomposites-for-the-repair-of-bone-defects
#17
L Keller, A Regiel-Futyra, M Gimeno, S Eap, G Mendoza, V Andreu, Q Wagner, A Kyzioł, V Sebastian, G Stochel, M Arruebo, N Benkirane-Jessel
Chitosan scaffolds of different deacetylation degrees, average molecular weights and concentrations reinforced with silica nanoparticles were prepared for bone tissue regeneration. The resulting nanocomposites showed similar pore sizes (<300μm) regardless the deacetylation degree and concentration used in their formulation. Their mechanical compression resistance was increased by a 30% with the addition of silica nanoparticles as nanofillers. The biocompatibility of the three-dimensional chitosan scaffolds was confirmed by the Alamar Blue assay in human primary osteoblasts as well as the formation of cell spheroids indicative of their great potential for bone regeneration...
June 21, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28647567/stearoyl-coa-desaturase-regulates-sorafenib-resistance-via-modulation-of-er-stress-induced-differentiation
#18
Mark Kin Fai Ma, Eunice Yuen Ting Lau, Doris Hoi Wing Leung, Jessica Lo, Nicole Pui Yu Ho, Lily Kwan Wai Cheng, Stephanie Ma, Chi Ho Lin, John A Copland, Jin Ding, Regina Cheuk Lam Lo, Irene Oi Lin Ng, Terence Kin Wah Lee
We investigated the functional role and clinical significance of Stearoyl CoA desaturase-1 (SCD1) mediated endoplasmic reticulum (ER) stress in regulation of liver tumor-initiating cells (T-ICs) and sorafenib resistance, aiming to develop a novel therapeutic strategy against hepatocellular carcinomas (HCCs) METHODS We evaluated the clinic-pathological relevance of SCD1 and its correlation with sorafenib resistance in large cohorts of HCC clinical samples by qPCR and immunohistochemical analyses. Lentiviral-based overexpression and knockdown approaches were performed to characterize functional roles of SCD1 in regulation of liver T-ICs and sorafenib resistance...
June 21, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28647555/normalizing-the-gene-dosage-of-dyrk1a-in-a-mouse-model-of-down-syndrome-rescues-several-alzheimer-s-disease-phenotypes
#19
Susana García-Cerro, Noemí Rueda, Verónica Vidal, Sara Lantigua, Carmen Martínez-Cué
The intellectual disability that characterizes Down syndrome (DS) is primarily caused by prenatal changes in central nervous system growth and differentiation. However, in later life stages, the cognitive abilities of DS individuals progressively decline due to accelerated aging and the development of Alzheimer's disease (AD) neuropathology. The AD neuropathology in DS has been related to the overexpression of several genes encoded by Hsa21 including DYRK1A (dual-specificity tyrosine-(Y)-phosphorylation regulated kinase 1A), which encodes a protein kinase that performs crucial functions in the regulation of multiple signaling pathways that contribute to normal brain development and adult brain physiology...
June 21, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28647510/hepatoprotective-effect-of-gan-kang-yaun-against-chronic-liver-injury-induced-by-alcohol
#20
Yuanheng Guo, Qingsheng Zhao, Lili Cao, Bing Zhao
ETHNOPHARMACOLOGICAL RELEVANCE: Gan Kang Yuan (GKY) is a compound medicine formulated on the basis of traditional Chinese medicine (TCM). It was composed of Herba Cistanchis (Roucongrong), Radix Puerariae (Gegen), Radix Astragali (Huangqi), Fructus Schisandrae (Wuweizi) and Radix Glycyrrhizae (Gancao). AIM: The purpose of this study is to research the hepatoprotective effect of GKY against liver injury induced by alcohol, and to elucidate the mechanism of hepatopretective effect...
June 21, 2017: Journal of Ethnopharmacology
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