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https://www.readbyqxmd.com/read/29684872/developmental-toxicity-of-dibutyl-phthalate-and-citrate-ester-plasticizers-in-xenopus-laevis-embryos
#1
Yang Xu, Myung Chan Gye
Citrate esters have been considered as alternatives to phthalate plasticizers. Being considered to have low toxicity in mammals, their toxicological information for aquatic animals remains poorly understood. We examined the developmental toxicity of citrate esters including tributyl O-acetylcitrate (ATBC), triethyl 2-acetylcitrate (ATEC), and trihexyl O-acetylcitrate (ATHC) together with dibutyl phthalate (DBP) based on the frog embryo teratogenesis assay-Xenopus (FETAX). ATBC has the lowest 96 h LC50 and 96 h EC50 values...
April 15, 2018: Chemosphere
https://www.readbyqxmd.com/read/29683800/generation-and-characterization-of-a-paclitaxel-resistant-human-gastric-carcinoma-cell-line
#2
Ling Fu, Fen Yin, Xiao-Rui Li, Bing-Kai Han, Chuang Zhang, Jun-Wei Wang, Yu-Qing Wang, Yue-Feng Bi, Hong-Min Liu
The main aim of this study was to establish a novel paclitaxel (PTX)-resistant human gastric carcinoma cell line and to investigate its biological significance. A cell line, MGC803/PTX, was established by gradually increasing PTX density on the basis of MGC803 over a period of 10 months. In addition, a pair of resistant cell lines (SW620 and SW620/PTX) were added to further explain the resistant mechanism of PTX. The drug resistance index and stability of MGC803/PTX cells were detected using the Cell Counting Kit-8 method...
April 20, 2018: Anti-cancer Drugs
https://www.readbyqxmd.com/read/29682582/vitamin-d-3-protects-against-diabetic-retinopathy-by-inhibiting-high-glucose-induced-activation-of-the-ros-txnip-nlrp3-inflammasome-pathway
#3
Li Lu, Qianyi Lu, Wei Chen, Jingwen Li, Chunxia Li, Zhi Zheng
Purpose: This study aimed to evaluate the mechanisms underlying the effects of 1,25-dihydroxyvitamin D (vitamin D3 ) on diabetes-induced retinal vascular damage and retinal vascular endothelial cell apoptosis. Methods: Diabetic and control rats were randomly assigned to receive vitamin D3 or vehicle for 6 months. Additionally, human retinal microvascular endothelial cells (HRMECs) were incubated in normal or high-glucose medium with or without vitamin D3 . Morphological changes in retinal tissues and retinal vascular permeability were examined, and cellular apoptosis was detected by fluorescence staining...
2018: Journal of Diabetes Research
https://www.readbyqxmd.com/read/29682535/the-role-of-mirna-132-against-apoptosis-and-oxidative-stress-in-heart-failure
#4
Xuelei Liu, Zhou Tong, Keyan Chen, Xiaofang Hu, Hongxu Jin, Mingxiao Hou
Objective: To explore the effect of microRNA-132 of heart failure and provide theoretical guidance for clinical treatment of heart failure (HF). Methods: Peripheral blood was collected from HF patients. RT-qPCR was used to determine microRNA-132 expression. Mouse models of heart failure were established. Color Doppler ultrasound was utilized to measure the changes of cardiac function. HE and Masson staining were applied to observe pathological changes of the myocardium...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29682185/stat5-inhibition-induces-trail-dr4-dependent-apoptosis-in-peripheral-t-cell-lymphoma
#5
Haley M Simpson, Aki Furusawa, Kavitha Sadashivaiah, Curt I Civin, Arnob Banerjee
Peripheral T-cell lymphoma (PTCL) is a rare, aggressive, heterogeneous, Non-Hodgkin's lymphoma with poor prognosis and inadequate response to current therapies. Recent sequencing studies indicate a prevalence of activating mutations in the JAK/STAT signaling pathway. Oncogenic mutations in STAT5B, observed in approximately one third of cases of multiple different PTCL subtypes, correlate with inferior patient outcomes. Therefore, interest in the development of therapeutic strategies for targeting STAT5 in PTCL is warranted...
March 30, 2018: Oncotarget
https://www.readbyqxmd.com/read/29682179/antiapoptotic-bcl-2-proteins-determine-sorafenib-regorafenib-resistance-and-bh3-mimetic-efficacy-in-hepatocellular-carcinoma
#6
Anna Tutusaus, Milica Stefanovic, Loreto Boix, Blanca Cucarull, Aynara Zamora, Laura Blasco, Pablo García de Frutos, Maria Reig, Jose C Fernandez-Checa, Montserrat Marí, Anna Colell, Jordi Bruix, Albert Morales
Sorafenib, systemic treatment for advanced hepatocellular carcinoma (HCC), and regorafenib, novel second line treatment after sorafenib failure, have efficacy limited by evasive mechanisms of acquired-drug resistance. BCL-2 proteins participate in the response to tyrosine kinase inhibitors; however, their role in HCC therapy with sorafenib/regorafenib remains uncertain. BH3-mimetic ABT-263 (navitoclax) enhanced sorafenib activity, inducing cell death via a mitochondrial caspase-dependent mechanism, after BCL-xL/BCL-2 inhibition...
March 30, 2018: Oncotarget
https://www.readbyqxmd.com/read/29682031/solitary-fibrous-tumors-of-the-orbit-and-central-nervous-system-a-case-series-analysis
#7
Marisa Brum, Hipólito Nzwalo, Edson Oliveira, Maria Rita Pelejão, Pedro Pereira, João Paulo Farias, José Pimentel
Introduction: Solitary fibrous tumor (SFT) is rarely diagnosed in clinical practice. Since its initial descriptions in the central nervous system (CNS) and the orbits, very few case reports and small case series have expanded their clinical and pathological characterization. We sought to describe a cases series of SFT from a single laboratory of neuropathology belonging to a tertiary university hospital. Methods: Retrospective clinical and histopathological description of eight cases of CNS and orbital SFT diagnosed over a 21-year period of time...
April 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29681849/danhong-injection-combined-with-t-pa-improves-thrombolytic-therapy-in-focal-embolic-stroke
#8
Min Li, Jing Zhou, Weifeng Jin, Xiaohong Li, Yuyan Zhang
Background: Hemorrhagic transformation, neurotoxicity, short treatment time windows, and other defects are considered as the major limitations for the thrombolytic therapy. This study is devoted to figure out whether Danhong injection (DHI) combined with tissue-plasminogen activator (t-PA) could extend the treatment time windows and ameliorate brain injury, hemorrhagic complication and BBB disruption after focal embolic stroke. Methods: In vitro , the combined concentrations of DHI and t-PA were added to wells reacted with plasminogen and D-Val-Leu-Lys-AMC...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29680908/gts-21-protected-against-lps-induced-sepsis-myocardial-injury-in-mice-through-%C3%AE-7nachr
#9
Weilan Kong, Kai Kang, Yang Gao, Haitao Liu, Xianglin Meng, Yanhui Cao, Songliu Yang, Wen Liu, Jiannan Zhang, Kaijiang Yu, Mingyan Zhao
Sepsis-induced myocardial injury is a well-known cause of mortality. The cholinergic anti-inflammatory pathway (CHAIP) is a physiological mechanism by which the central nervous system regulates immune response through the vagus nerve and acetylcholine; the α7-nicotinic acetylcholine receptor (α7nAChR) is the main component of CHAIP; GTS-21, a synthetic α7nAChR selective agonist, has repeatedly shown its powerful anti-inflammatory effect. However, little is known about its effect on LPS-induced myocardial injury...
April 21, 2018: Inflammation
https://www.readbyqxmd.com/read/29680739/autophagy-is-a-pro-survival-mechanism-in-ovarian-cancer-against-the-apoptotic-effects-of-euxanthone
#10
Li Zhu, Xiuping Liu, Dongmei Li, Shuhong Sun, Yue Wang, Xianghong Sun
BACKGROUND: Ovarian cancer is one of the most prevalent gynecological malignancies and thus the development of novel therapeutic agents for managing ovarian cancer is imperative. Euxanthone, a xanthone derived from Polygala caudata, has been found to exert cytotoxic effects on cancerous cells. This study was designed to assess the role of euxanthone in ovarian cancer. METHODS AND MATERIALS: Cell Counting Kit-8 (CCK-8) assay was utilized to assess the viability of human ovarian cancer SKOV3 and OVCAR3 cell lines...
April 19, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29680708/sirt1-mediates-apelin-13-in-ameliorating-chronic-normobaric-hypoxia-induced-anxiety-like-behavior-by-suppressing-nf-%C3%AE%C2%BAb-pathway-in-mice-hippocampus
#11
Junming Fan, Hui Guang, Haizeng Zhang, Danyang Chen, Lu Ding, Xiaofang Fan, Feng Xue, Zhuohui Gan, Yongyu Wang, Sunzhong Mao, Lianggang Hu, Yongsheng Gong
We previously showed that apelin-13 ameliorates chronic normobaric hypoxia (CNH)-induced anxiety-like behavior in mice, the mechanism, however, is not well known. This study aims to investigate whether SIRT1 is involved in the anxiolytic effect of apelin-13 in CNH-treated mice, and to illustrate the potential underlying mechanism. We showed that apelin-13 treatment reversed a decrease of SIRT1 and an increase of acetylated p65 (lysine 310) proteins expression in hippocampus of CNH-treated mice, indicating that apelin-13 inhibited NF-κB signaling pathway by activating SIRT1...
April 19, 2018: Neuroscience
https://www.readbyqxmd.com/read/29680307/prognostic-value-of-cd95-active-caspase-3-and-bcl-2-expression-in-adult-patients-with-de-novo-acute-lymphoblastic-leukemia
#12
Laura Arcelia Montiel-Cervantes, Elba Reyes-Maldonado, Jaime Garcia-Chavez, Alvaro Hernandez-Caballero, Rubiraida Molina-Aguilar, Miriam America Garcia-Ruiz Esparza, Jorge Vela-Ojeda
BACKGROUND: Acute lymphoblastic leukemia is an aggressive malignant disease with high mortality rates in adults. AIM OF THE STUDY: The expression levels of CD95, active caspase-3, and Bcl-2 were determined in 111 patients with de novo acute lymphoblastic leukemia (ALL) and correlated with overall survival (OS) and disease-free survival (DFS). METHODS: The immunophenotyped ok leukemia and the expression of CD95, active caspase-3, and Bcl-2, were determined by flow cytometry...
April 18, 2018: Archives of Medical Research
https://www.readbyqxmd.com/read/29679856/b7-h6-expression-is-induced-by-lipopolysaccharide-and-facilitates-cancer-invasion-and-metastasis-in-human-gliomas
#13
Fengyuan Che, Xiaoli Xie, Long Wang, Quanping Su, Feiyu Jia, Yufu Ye, Lanlan Zang, Jing Wang, Hongyan Li, Yanchun Quan, Cuiping You, Jiawei Yin, Zhiqiang Wang, Gen Li, Yifeng Du, Lijuan Wang
Although great progress has been made in treatment regimens, gliomas are still incurable and the 5-year survival remains poor. Studies focusing on molecules that regulate tumorigenesis or tumor immunity may provide potential therapeutic strategies for patients with glioma. B7-H6 is selectively expressed in tumor cells and plays vital roles in host immune responses. In this study, we demonstrated that B7-H6 was expressed in glioma cell lines, including CRT, U251, SHG-44, SF-295, TG-905 and U373, and tumor tissues isolated from glioma patients...
April 18, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29679655/n-acetylcysteine-transforms-necrosis-into-apoptosis-and-affords-tailored-protection-from-cisplatin-cytotoxicity
#14
Sandra M Sancho-Martínez, Laura Prieto-García, Marta Prieto, Isabel Fuentes-Calvo, José M López-Novoa, Ana I Morales, Carlos Martínez-Salgado, Francisco J López-Hernández
Nephrotoxicity is the main limitation to the dosage and anticancer efficacy of cisplatin. Cisplatin produces tubular epithelial cell apoptosis and necrosis depending on the concentration of the drug. Protection from cisplatin nephrotoxicity must therefore tackle both cell death modes. For its ability to reduce cisplatin reactivity, in addition to its antioxidant effect, we tested and found that N-acetylcysteine (NAC) was most effective at inhibiting cisplatin cytotoxicity. NAC has no significant effect on cell death induced by either cycloheximide or Fas activation, indicating a rather selective action...
April 18, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29679563/shrna-mediated-knock-down-of-cxcl8-inhibits-tumor-growth-in-colorectal-liver-metastasis
#15
Abhishek Kumar, Madhuri Cherukumilli, Seyed Hamidreza Mahmoudpour, Karsten Brand, Obul Reddy Bandapalli
CXCL8 belongs to proinflammatory chemokines that are predominantly involved in neutrophil chemotaxis and degranulation. Several studies have suggested that secretion of CXCL8 from cancer cells have a profound effect on tumor microenvironment. In this study, in continuation to our previous work of understanding the global picture of invasion related genes in colorectal liver metastases, we clearly show an up-regulation of CXCL8 expression in the tumor cells at the invasion front as compared to the tumor cells in the inner parts of the tumor...
April 18, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29679278/overexpression-of-modified-human-tr%C3%AE-1-suppresses-the-growth-of-hepatocarcinoma-sk-hep1-cells-in-vitro-and-in-xenograft-models
#16
Xiaoxiang Peng, Yuntao Zhou, Yanli Sun, Wei Song, Xiangying Meng, Chunling Zhao, Ronglan Zhao
Association studies suggest that TRβ1 functions as a tumor suppressor. Thyroid hormone receptors (TRs) mediate transcriptional responses through a highly conserved DNA-binding domain (DBD). We previously constructed an artificially modified human TRβ1 (m-TRβ1) via the introduction of a 108-bp exon sequence into the corresponding position of the wild-type human TRβ1 (TRβ1) DBD. Studies confirmed that m-TRβ1 was functional and could inhibit the proliferation of breast cancer MDA-MB-468 cells in vitro. To understand the role of m-TRβ1 in liver tumor development, we adopted a gain-of-function approach by stably expressing TRβ (m-TRβ1 and TRβ1) genes in a human hepatocarcinoma cell line, SK-hep1 (without endogenous TRβ), and then evaluated the effects of the expressed TRβ on cancer cell proliferation, migration, and tumor growth in cell-based studies and xenograft models...
April 20, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29678849/effects-of-adenovirus-mediated-vegf165-gene-therapy-on-myocardial-infarction
#17
Chao Wang, Boya Zhang, Yu Lin, Yang Dong
AIM: To evaluate the role of adenovirus-mediated transduction human VEGF isoform 165 via direct myocardial injection in rats with an occluded circumflex coronary artery, and the possible underlying mechanism. METHODS: Sprague-Dawley rats were induced myocardial infarction (MI) with ligation of the left coronary artery. Rats were randomly divided into 4 groups: 1) the sham group; 2) the MI group; 3) the NS (normal saline) group and 4) the VEGF group. Direct myocardial injection of 0...
March 2018: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/29678767/targeted-inhibition-of-tumor-survival-metastasis-and-angiogenesis-by-acacia-ferruginea-mediated-regulation-of-vegf-inflammatory-mediators-cytokine-profile-and-inhibition-of-transcription-factor-activation
#18
Kunnathur Murugesan Sakthivel, Chandrasekaran Guruvayoorappan
Acacia ferruginea extract (AFE) was studied for anti-metastasis/-angiogenesis activity against B16F-10 melanoma cells in C57BL/6 mice. In vitro cytotoxicity of AFE was first screened using MTT assay and it was shown to inhibit B16F-10 cells with IC50 value of 52.94 μg/ml. Anti-metastatic activity of AFE in vivo revealed administration of AFE (10 mg/kg.b.wt) in three different regimens has shown reduced metastatic colony formation in lungs and prolonged survival in metastatic tumor-bearing hosts. Biochemical analysis shown that treatment with AFE significantly reduced the lung collagen hydroxyproline, hexosamine, uronic acid, sialic acid and gamma-glutamyl transpeptidase content...
April 17, 2018: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/29678660/metformin-combined-with-quercetin-synergistically-repressed-prostate-cancer-cells-via-inhibition-of-vegf-pi3k-akt-signaling-pathway
#19
Shuben Sun, Fanger Gong, Ping Liu, Qilong Miao
The aim of present study was to examine whether metformin in association with quercetin has any synergistically anti-tumor effects on prostate cancer. Our findings showed that metformin in combination with quercetin synergistically inhibited the growth, migration and invasion of both PC-3 and LNCaP cells. Co-treatment of these two agents induced more apoptosis than single agent treatment. The co-treatment-induced apoptosis was caspase-dependent and accompanied by the down-regulation of Bcl-2 family members...
April 17, 2018: Gene
https://www.readbyqxmd.com/read/29678549/title-reversal-of-drug-resistance-by-planetary-ball-milled-pbm-nanoparticle-loaded-with-resveratrol-and-docetaxel-in-prostate-cancer
#20
Santosh Kumar Singh, James W Lillard, Rajesh Singh
The folate receptor (FR) is a valued target that is highly expressed in various cancers, which will expedite the development of ligand-receptor binding based cancer therapeutics. In the present investigation, through tissue microarray analysis, we report higher levels of folate receptor expression in prostate cancer (PCa) tissue derived from patients, which were minimal in normal tissue. For folate-receptor based targeted therapy of PCa, we generated novel planetary ball milled (PBM) nanoparticles (NPs) encapsulated with resveratrol (RES), and in combination with docetaxel (DTX) and conjugated with folic acid (FA) on the surface...
April 17, 2018: Cancer Letters
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