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Matrix metalloproteinases

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https://www.readbyqxmd.com/read/28109154/-inhibitory-effect-of-overexpressed-kisspeptin-on-proliferation-and-migration-of-mkn-45-gastric-cancer-cells
#1
Xin Wang, Yijiong Li, Ruihua Zhang, Chao Pang, Xiaoqing Jiao, Zhenlong Zhu, Zhengmin Wang
Objective To investigate the expression of kisspeptin in gastric adenocarcinoma and its effect on the proliferation and migration of gastric cancer cells. Methods The level of kisspeptin in 50 gastric cancer tissues and their paracancerous tissues were detected by quantitative real-time PCR and Western blotting. Kisspeptin-siRNA, control-siRNA, pEGFP-N1-kisspeptin, pEGFP-N1 were separately transfected into MKN-45 gastric cancer cells. After 48-hour culture, the levels of matrix metalloproteinase-2 (MMP-2), β-catenin, C-myc, MMP-9, kisspeptin were detected by Western blotting; MTT assay was used to detect the proliferation of MKN-45 cells; wound healing assay was performed to assess the migration ability of MKN-45 cells...
February 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28109076/microrna-409-3p-represses-glioma-cell-invasion-and-proliferation-by-targeting-high-mobility-group-nucleosome-binding-domain-5
#2
Yidong Cao, Liang Zhang, Minghao Wei, Xue Jiang, Dong Jia
Emerging evidence has suggested that aberrantly expressed microRNAs (miRNAs) are associated with glioma development andprogression. The aberrant expression of miR-409-3p has been reported in several human cancers. However, little is known about the function of miR-409-3p in gliomas. The aim of this study was to investigate the specific role and molecular mechanism of miR-409-3p in gliomas. In the present study, we found that miR-409-3p was downregulated in glioma tissue and cell lines. Overexpression of miR-409-3p inhibited glioma cell invasion and proliferation, whereas suppression of miR-409-3p promoted glioma cell invasion and proliferation...
January 20, 2017: Oncology Research
https://www.readbyqxmd.com/read/28108858/retraction-note-to-the-clinical-utility-of-matrix-metalloproteinase-9-in-evaluating-pathological-grade-and-prognosis-of-glioma-patients-a-meta-analysis
#3
Xiangshan Yang, Shunzeng Lv, Yuting Liu, Daotang Li, Ranran Shi, Zhenyu Tang, Jianzhen Fan, Zhongfa Xu
No abstract text is available yet for this article.
January 20, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28106828/bajijiasu-abrogates-osteoclast-differentiation-via-the-suppression-of-rankl-signaling-pathways-through-nf-%C3%AE%C2%BAb-and-nfat
#4
Guoju Hong, Lin Zhou, Xuguang Shi, Wei He, Haibin Wang, Qiushi Wei, Peng Chen, Longkai Qi, Jennifer Tickner, Li Lin, Jiake Xu
Pathological osteolysis is commonly associated with osteoporosis, bone tumors, osteonecrosis, and chronic inflammation. It involves excessive resorption of bone matrix by activated osteoclasts. Suppressing receptor activator of NF-κB ligand (RANKL) signaling pathways has been proposed to be a good target for inhibiting osteoclast differentiation and bone resorption. Bajijiasu-a natural compound derived from Morinda officinalis F. C. How-has previously been shown to have anti-oxidative stress property; however, its effect and molecular mechanism of action on osteoclastogenesis and bone resorption remains unclear...
January 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106777/neuroprotection-by-caffeine-in-hyperoxia-induced-neonatal-brain-injury
#5
Stefanie Endesfelder, Ulrike Weichelt, Evelyn Strauß, Anja Schlör, Marco Sifringer, Till Scheuer, Christoph Bührer, Thomas Schmitz
Sequelae of prematurity triggered by oxidative stress and free radical-mediated tissue damage have coined the term "oxygen radical disease of prematurity". Caffeine, a potent free radical scavenger and adenosine receptor antagonist, reduces rates of brain damage in preterm infants. In the present study, we investigated the effects of caffeine on oxidative stress markers, anti-oxidative response, inflammation, redox-sensitive transcription factors, apoptosis, and extracellular matrix following the induction of hyperoxia in neonatal rats...
January 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106466/phototoxic-effect-of-topical-fluoroquinolones-administered-before-corneal-crosslinking-in-a-murine-model
#6
Victor E Reviglio, Matias Osaba, Gabriela Sambuelli, Irene C Kuo
PURPOSE: Corneal crosslinking by UV light (UV-CXL) has become a popular treatment for keratoconus and corneal ectasia. Fluoroquinolones (FQs), commonly administered topically before UV-CXL, are known to be phototoxic to the skin and lens. The purpose of this study was to investigate phototoxic effects of topical FQ treatment on murine corneas before UV-CXL, in which the corneal epithelium was kept intact. METHODS: Murine corneas were treated with various antibiotics with or without riboflavin before UV-CXL...
January 20, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28106292/23-hydroxytormentic-acid-protects-human-dermal-fibroblasts-by-attenuating-uva-induced-oxidative-stress
#7
Hae Jeong Youn, Ki Bbeum Kim, Hyo-Sun Han, In-Sook An, Kyu Joong Ahn
Ultraviolet A (UVA), one of the major components of sunlight, can penetrate the dermal layer of the skin and generate reactive oxygen species (ROS). It causes alterations in the dermal connective tissue and gene expression, inflammation, photoaging, and DNA damage. Therefore, the harmful effects of UVA and strategies to reduce it have been consistently investigated. 23-Hydroxytormentic acid (23-HTA) has been demonstrated to improve drug-induced nephrotoxicity and exhibit several free radical scavenging effects with other molecules...
January 20, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/28105703/mechanisms-involved-in-enhancement-of-matrix-metalloproteinase-9-expression-in-macrophages-by-interleukin-33
#8
Wataru Ariyoshi, Toshinori Okinaga, Wichida Chaweewannakorn, Sumio Akifusa, Tatsuji Nisihara
Endothelial transmigration of macrophages is accomplished by matrix metalloproteinase (MMP)-induced degradation of the basement membrane and extracellular matrix components. Macrophages up-regulate MMP-9 expression and secretion upon immunological challenges and require its activity for migration during inflammatory responses. Interleukin (IL)-33 is a recently discovered pro-inflammatory cytokine that belongs to the IL-1 family. The aim of this study was to elucidate the mechanisms underlying IL-33-induced MMP-9 expression in the mouse monocyte/macrophage line RAW264...
January 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28105338/association-between-mmp-3-and-mmp-9-polymorphisms-and-coronary-artery-disease
#9
Osman Beton, Serdal Arslan, Burak Acar, Nil Ozbilum, Ocal Berkan
Matrix metalloproteinase (MMP)-3 and MMP-9 polymorphisms are characterized by plaque stability in coronary arteries. The aim of the current study was to investigate the 5A/6A polymorphism in the MMP-3 gene and C/T polymorphism in the MMP-9 gene in patients with coronary artery disease (CAD). The study population consisted of 400 patients who underwent coronary angiography. There were two groups consisting of 200 consecutive patients with CAD, presenting with stable angina pectoris, and 200 consecutive patients exhibiting normal coronary arteries...
December 2016: Biomedical Reports
https://www.readbyqxmd.com/read/28105176/dihydroartemisinin-transiently-activates-the-jnk-sapk-signaling-pathway-in-endothelial-cells
#10
Fengyun Dong, Ju Han, Guoxian Jing, Xiaocui Chen, Suhua Yan, Longtao Yue, Zhiqun Cao, Xiaochun Liu, Guozhao Ma, Ju Liu
Artemisinin and its derivatives are well-known anti-malaria drugs and in the early stages of research for cancer treatment. Dihydroartemisinin (DHA), a more water-soluble derivative of artemisinin, has demonstrated strong anti-angiogenic activity. The purpose of the present study was to investigate the underlying molecular mechanisms of the effect of DHA on angiogenesis. Human umbilical vein endothelial cells (HUVECs) treated with DHA were examined for apoptosis and activation of the c-Jun N-terminal kinase (JNK) signaling pathway, one of the major mitogen-activated protein kinase cascades...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105147/fgfr3-silencing-by-sirna-inhibits-invasion-of-a549-cells
#11
Yuhua Li, Xiguang Liu, Hongjun Zhang, Tao Jiang, Wenjing Xiao, Shufen Zhao, Xiaoyun Yu, Fanjie Han
The present study identified that fibroblast growth factor receptor 3 (FGFR3) was significantly upregulated in bone metastasis of lung adenocarcinoma. RNA interference (RNAi) is a powerful approach for treating a wide range of human diseases, including cancer, through downregulating the expression of selected genes. In the present study, the invasiveness of A549 cells cultured in vitro was altered by small interfering (si)RNA targeting FGFR3, and the regulatory effect of silencing FGFR3 on the expression levels of E-cadherin and matrix metalloproteinase (MMP)9 was investigated...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105142/antitumor-effects-of-recombinant-human-adenovirus-p53-against-human-cutaneous-squamous-cell-carcinoma-in-mice
#12
Yuanchao Li, Wei He, Rupeng Wang, Libin Yang, Chunli Zhou, Bin Zhang
The present study was conducted to identify the anti-tumor effects of rAd/p53, which is a recombinant human serotype 5 adenovirus, in cutaneous squamous cell carcinoma (cSCC). Mouse models of human cSCC were constructed by injecting human cutaneous squamous cell carcinoma cells into both flanks of nude mice. Subsequently, the 75 nude mice with cSCC xenograft tumors were randomly divided into recombinant human serotype 5 adenovirus (rAd)/p53, rAd/p53 + 5-fluorouracil (5-Fu) and 5-Fu groups. One side of the tumors was administered the therapeutic agents as the therapeutic group, whereas the remaining side was treated with medical saline as the control...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28104528/cannabinoid-receptor-type-2-cb2-as-one-of-the-candidate-genes-in-human-carotid-plaque-imaging-evalu1ation-of-the-novel-radiotracer-11-c-rs-016-targeting-cb2-in-atherosclerosis
#13
Romana Meletta, Roger Slavik, Linjing Mu, Zoran Rancic, Nicole Borel, Roger Schibli, Simon M Ametamey, Stefanie D Krämer, Adrienne Müller Herde
INTRODUCTION: Endarterectomized human atherosclerotic plaques are a valuable basis for gene expression studies to disclose novel imaging biomarkers and therapeutic targets, such as the cannabinoid receptor type 2 (CB2). In this work, CB2 is expressed on activated immune cells, which are abundant in inflamed plaques. We evaluated the CB2-specific radiotracer [(11)C]RS-016 for imaging vascular inflammation in human and mouse atherosclerotic lesions. METHODS: The differential gene expression of microscopically classified human carotid plaques was evaluated using quantitative polymerase chain reaction...
January 8, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/28104261/multiple-sclerosis-association-of-gelatinase-b-matrix-metalloproteinase-9-with-risk-and-clinical-course-the-disease
#14
Ana Valado, Maria João Leitão, António Martinho, Rui Pascoal, João Cerqueira, Inês Correia, Sónia Batista, Lívia Sousa, Inês Baldeiras
BACKGROUND: Multiple sclerosis (MS) is an autoimmune disease characterized by inflammation and axonal degeneration of the central nervous system and a leading cause of disability in young adults. The matrix metalloproteinases in general and specially gelatinase B/metalloproteinase-9 (MMP-9) plays a role in the pathogenesis of multiple sclerosis. OBJECTIVE: To investigate the presence of the MMP-9 -1562C/T polymorphism in a Portuguese population of MS patients and assess its impact in susceptibility and course of the disease...
January 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28103589/the-effects-of-body-mass-index-on-second-trimester-amniotic-fluid-cytokine-and-matrix-metalloproteinase-levels
#15
Rauf Melekoglu, Osman Ciftci, Sevil Eraslan, Nese Basak, Ebru Celik
AIM: The aim of this study was to determine the effects of obesity on amniotic fluid (AF) inflammatory markers in second-trimester AF, testing the hypothesis that there is a relationship between maternal body mass index (BMI) and fetal inflammatory exposure. METHODS: AF was obtained from 84 singleton pregnant women undergoing elective amniocentesis for karyotype analysis at 16-24 weeks of gestation between April 2014 and May 2016. The cell-free AF was used to analyze interleukin (IL)-1β and IL-6, and matrix metalloproteinase (MMP)-1, MMP-6, and MMP-13...
January 20, 2017: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/28103583/angiogenesis-related-genes-may-be-a-more-important-factor-than-matrix-metalloproteinases-in-bronchopulmonary-dysplasia-development
#16
Min Yang, Bo-Lin Chen, Jian-Bao Huang, Yan-Ni Meng, Xiao-Jun Duan, Lu Chen, Lin-Rui Li, Yan-Ping Chen
We characterized the expression profile of angiogenesis-related genes (ARG) and matrix metalloproteinase (MMP) genes in preterm infants, with and without bronchopulmonary dysplasia (BPD). We reanalyzed a gene expression dataset for preterm infants from the Gene Expression Omnibus database using the Gene-Cloud of Biotechnology Information platform. A total of 1,652 genes were differentially (1.2-fold change) expressed: 811 were highly expressed in infants with BPD, and 841 were highly expressed in those without BPD...
January 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28101874/bioengineered-collagens
#17
Barbara Brodsky, John A M Ramshaw
There is a great deal of interest in obtaining recombinant collagen as an alternative source of material for biomedical applications and as an approach for obtaining basic structural and biological information. However, application of recombinant technology to collagen presents challenges, most notably the need for post-translational hydroxylation of prolines for triple-helix stability. Full length recombinant human collagens have been successfully expressed in cell lines, yeast, and several plant systems, while collagen fragments have been expressed in E...
2017: Sub-cellular Biochemistry
https://www.readbyqxmd.com/read/28101577/viscumins-functionally-modulate-cell-motility-associated-gene-expression
#18
Sonja Schötterl, Miriam Hübner, Angela Armento, Vivien Veninga, Naita Maren Wirsik, Simon Bernatz, Hans Lentzen, Michel Mittelbronn, Ulrike Naumann
In Europe extracts from Viscum album L., the European white-berry mistletoe, are widely used as a complementary cancer therapy. Viscumins (mistletoe lectins, ML) have been scrutinized as important active components of mistletoe and exhibit a variety of anticancer effects such as stimulation of the immune system, induction of cytotoxicity, reduction of tumor cell motility as well as changes in the expression of genes associated with cancer development and progression. By microarray expression analysis, quantitative RT-PCR and RT-PCR based validation of microarray data we demonstrate for the Viscum album extract Iscador Qu and for the lectins Aviscumine and ML-1 that in glioma cells these drugs differentially modulate the expression of genes involved in the regulation of cell migration and invasion, including processes modulating cell architecture and cell adhesion...
February 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28101572/insulin-induction-instigates-cell-proliferation-and-metastasis-in-human-colorectal-cancer-cells
#19
Chi-Cheng Lu, Pei-Yi Chu, Shih-Min Hsia, Chi-Hao Wu, Yu-Tang Tung, Gow-Chin Yen
The progression of colorectal cancer has been reported to have a positive correlation with the combination of hyperglycemia and hyperinsulinemia in diabetic patients, leading to a lower survival rate. However, how insulin acts on colorectal cancer remains not well understood. The purpose of this study was to explore the effect of insulin on colon cancer cell proliferation and its underlying molecular signaling as well as the impact of insulin-induced in vitro metastasis. Our results showed that insulin markedly promoted cell proliferation, migration and anchorage-independent growth in human colon cancer HCT-116 cells...
February 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28101531/osteopontin-is-a-blood-biomarker-for-microglial-activation-and-brain-injury-in-experimental-hypoxic-ischemic-encephalopathy
#20
Yikun Li, Eric B Dammer, Xiaohui Zhang-Brotzge, Scott Chen, Duc M Duong, Nicholas T Seyfried, Chia-Yi Kuan, Yu-Yo Sun
Clinical management of neonatal hypoxic-ischemic encephalopathy (HIE) suffers from the lack of reliable surrogate marker tests. Proteomic analysis may identify such biomarkers in blood, but there has been no proof-of-principle evidence to support this approach. Here we performed in-gel trypsin digestion of plasma proteins from four groups of 10-d-old mice [untouched and 24 h after low-dose lipopolysaccharide (LPS) exposure, hypoxia-ischemia (HI), or LPS/HI injury; n = 3 in each group) followed by liquid chromatography-tandem mass spectrometry and bioinformatics analysis to search for HI- and LPS/HI-associated brain injury biomarkers...
January 2017: ENeuro
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