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https://www.readbyqxmd.com/read/28086769/effect-of-ginseng-extract-on-the-tgf-%C3%AE-1-signaling-pathway-in-ccl4-induced-liver-fibrosis-in-rats
#1
Mohamed M Hafez, Sherifa S Hamed, Manal F El-Khadragy, Zeinab K Hassan, Salim S Al Rejaie, Mohamed M Sayed-Ahmed, Naif O Al-Harbi, Khalid A Al-Hosaini, Mohamed M Al-Harbi, Ali R Alhoshani, Othman A Al-Shabanah, Shakir Dekhal Alsharari
BACKGROUND: Liver diseases are major global health problems. Ginseng extract has antioxidant, immune-modulatory and anti-inflammatory activities. This study investigated the effect of ginseng extract on carbon tetrachloride (CCl4)-induced liver fibrosis in rats. METHODS: Male Wistar rats were divided into four groups: control group, ginseng group, CCl4 group and CCl4 + ginseng group. Liver injury was induced by the intraperitoneal (I.P) injection of 3 ml/kg CCl4 (30% in olive oil) weekly for 8 weeks...
January 13, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28079131/matrix-metallopeptidase-2-gene-rs2287074-polymorphism-is-associated-with-brick-tea-skeletal-fluorosis-in-tibetans-and-kazaks-china
#2
Junrui Pei, Bingyun Li, Yang Liu, Xiaona Liu, Mang Li, Yanru Chu, Qing Yang, Wei Jiang, Fuxun Chen, Gottfried M Darko, Yanmei Yang, Yanhui Gao
Brick tea skeletal fluorosis is still a public health issue in the north-western area of China. However its pathogenesis remains unknown. Our previous study reveals that the severity of skeletal fluorosis in Tibetans is more serious than that in Kazaks, although they have similar fluoride exposure, suggesting the onset of brick tea type skeletal fluorosis might be genetically influenced. Here we show that MMP-2 rs2287074 SNP (G/A), but not rs243865, was associated with Brick tea type fluorosis in Tibetans and Kazaks, China...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28075464/downregulation-of-the-n-myc-downstream-regulated-gene-1-is-related-to-enhanced-proliferation-invasion-and-migration-of-pancreatic-cancer
#3
Gang Cen, Kundong Zhang, Jun Cao, Zhengjun Qiu
The N-myc downstream regulated gene 1 (NDRG1) is differently expressed in human malignancies according to the tumor type. We investigated the expression of NDRG1 in pancreatic cancer tissues and cell lines as well as how it affects tumor growth, invasion and migration in pancreatic cancer cells. Experimental groups included NDRG1 overexpression and knockdown pancreatic cancer cell lines. Lentivirus-based empty vector transfected cells (NC group) were considered control groups. Proliferation, invasion and migration related proteins such as STAT3, MMPs, PTEN, PI3K/AKT were assessed by CCK-8, Transwell assay and western blotting...
January 5, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28075454/expression-of-glia-maturation-factor-%C3%AE-is-associated-with-colorectal-cancer-metastasis-and-its-downregulation-suppresses-colorectal-cancer-cell-migration-and-invasion-in-vitro
#4
Huili Wang, Zhijiang Chen, Hongen Chang, Xiaoping Mu, Wenyu Deng, Zhaohu Yuan, Fang Yao, Yan Liu, Rongjia Mai, Bingyi Wu
Glia maturation factor γ (GMFG) functions to reorganize the actin cytoskeleton and appears to play a causative role in cell migration and adherence. The present study assessed GMFG expression in colorectal cancer cells and tissue specimens and then explored the role of GMFG in colorectal cancer progression in vitro. GMFG protein was highly expressed in colorectal cancer tissues and a metastatic colon cancer cell line. Knockdown of GMFG expression using GMFG siRNA or anti-GMFG antibody decreased the capacity of colon cancer LoVo cell migration and invasion in vitro, while recombinant GMFG treatment induced LoVo cell migration...
January 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28069934/steroid-signaling-in-mature-follicles-is-important-for-drosophila-ovulation
#5
Elizabeth Knapp, Jianjun Sun
Although ecdysteroid signaling regulates multiple steps in oogenesis, it is not known whether it regulates Drosophila ovulation, a process involving a matrix metalloproteinase-dependent follicle rupture. In this study, we demonstrated that ecdysteroid signaling is operating in mature follicle cells to control ovulation. Moreover, knocking down shade (shd), encoding the monooxygenase that converts ecdysone (E) to the more active 20-hydroxyecdysone (20E), specifically in mature follicle cells, blocked follicle rupture, which was rescued by ectopic expression of shd or exogenous 20E...
January 9, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28064471/vasohibin-2-is-required-for-epithelial-mesenchymal-transition-of-ovarian-cancer-cells-by-modulating-tgf-%C3%AE-signaling
#6
Rie Norita, Yasuhiro Suzuki, Yutaka Furutani, Kazuki Takahashi, Yasuhiro Yoshimatsu, Katarzyna A Podyma-Inoue, Tetsuro Watabe, Yasufumi Sato
Vasohibin-2 (VASH2) is a homologue of VASH1, an endothelium-derived angiogenesis inhibitor. VASH2 is mainly expressed in cancer cells, and has been implicated in the progression of cancer by inducing angiogenesis and tumor growth. While VASH2 has been recently reported to be involved in epithelial-mesenchymal transition (EMT), its precise roles are obscure. The aim of the present study was to clarify the role of VASH2 in the EMT of cancer cells in relation to TGF-β signaling, which is a major stimulator of the EMT...
January 8, 2017: Cancer Science
https://www.readbyqxmd.com/read/28060997/effect-of-hypercholesterolemia-on-myocardial-function-ischemia-reperfusion-injury-and-cardioprotection-by-preconditioning-postconditioning-and-remote-conditioning
#7
REVIEW
Ioanna Andreadou, Efstathios K Iliodromitis, Antigone Lazou, Anikó Görbe, Zoltán Giricz, Rainer Schulz, Péter Ferdinandy
Hypercholesterolemia is considered to be a principle risk factor for cardiovascular disease, having direct negative effects on the myocardium itself, in addition to the development of atherosclerosis. Since hypercholesterolemia affects global cardiac gene expression profile, among many other factors, increased myocardial oxidative stress, mitochondrial dysfunction and inflammation trigger apoptosis and this may account for myocardial dysfunction and increased susceptibility of the myocardium to infarction. In addition, numerous experimental and clinical studies revealed that hyperlcholesterolemia may interfere with the cardioprotective potential of conditioning mechanisms...
January 6, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28055232/biological-features-of-a-renal-cell-carcinoma-cell-line-derived-from-spinal-metastasis
#8
Zhenhua Zhou, Yan Li, Huiqing Wang, Xudong Wang, Jianru Xiao
The establishment of a metastatic renal cell carcinoma (mRCC) cell line can facilitate the search for molecular mechanisms involved in RCC metastasis. A novel human mRCC cell line, designated RCC96, was established from an mRCC of the spine from a 65-year-old Chinese man. Morphology, cell cycle phase, chromosome number, cell capability of migration, tumorigenicity in nude mice, and cytogenetic features of RCC96 were investigated. Cell growth curve was detected and the cell number doubling time was 52 h. Karyotype analysis showed that these cells were polyploidy...
January 5, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28053109/matrix-metalloproteinase-activity-in-infections-by-an-encephalitic-virus-mouse-adenovirus-type-1
#9
Shanna L Ashley, Carla D Pretto, Matthew T Stier, Padma Kadiyala, Luiza Castro-Jorge, Tien-Huei Hsu, Robert Doherty, Kelly E Carnahan, Maria G Castro, Pedro R Lowenstein, Katherine R Spindler
: Mouse adenovirus type 1 (MAV-1) infection causes encephalitis in susceptible strains of mice and alters the permeability of infected brains to small molecules, which indicates disruption of the blood-brain barrier (BBB). In pathologic conditions, matrix metalloproteinases (MMPs) can disrupt the BBB through their proteolytic activity on basement membrane and tight junction proteins. We examined whether MAV-1 infection alters MMP activity in vivo and in vitro. Infected MAV-1-susceptible SJL mice had higher MMP2 and MMP9 activity in brains, measured by gelatin zymography, than mock infected mice...
January 4, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28053001/cancer-cachexia-differentially-regulates-visceral-adipose-tissue-turnover
#10
Felipe de Oliveira Franco, Magno Alves Lopes, Felipe Dos Santos Henriques, Rodrigo X Neves, Cesário Bianchi Filho, Miguel Luiz Batista Júnior
Cancer cachexia (CC) is a progressive metabolic syndrome that is marked by severe body weight loss. Metabolic disarrangement of fat tissues is a very early event in CC, followed by adipose tissue (AT) atrophy and remodelling. However, there is little information regarding the possible involvement of cellular turnover in this process. Thus, we evaluated the effect of CC on AT turnover of mesenteric (ME) and retroperitoneal (RP) AT depots as possible factors that contribute to AT atrophy. CC was induced by a subcutaneous injection of Walker tumour cells (2x10(7)) in Wistar rats...
January 4, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28051223/role-of-metalloproteinases-mmp-2-in-asthma
#11
Sonia Toujani, Nadia Mehiri, Kamel Hamzaoui, Hela Hadded, Nozha Ben Salah, Meriem Mjid, Yacine Ouahchi, Bechir Louzir, Jalloul Daghfous, Jouda Cherif, Majed Beji
Background - Many metalloproteinases (MMPs) play a role in the pathogenesis and modulation of the severity of asthma. MMP-9 is the predominant in asthma but other MMPs are involved such as the MMP-2. Aim - To determine the role of single nucleotide polymorphism of the gene MMP2 in susceptibility to asthma and its severity. Methods - Study case-control with prospectively enrolled patients with asthma and healthy subjects. We determined within two groups genotypes corresponding to the MMP2 polymorphism in -735C / T position, using a polymerase chain amplification technique associated with a polymorphism in the length of restriction fragments...
June 2016: La Tunisie Médicale
https://www.readbyqxmd.com/read/28050792/alpha-synuclein-alters-differently-gene-expression-of-sirts-parps-and-other-stress-response-proteins-implications-for-neurodegenerative-disorders
#12
J Motyl, P L Wencel, M Cieślik, R P Strosznajder, J B Strosznajder
Alpha-synuclein (ASN) is a presynaptic protein that can easily change its conformation under different types of stress. It's assumed that ASN plays an important role in the pathogenesis of Parkinson's and Alzheimer's disease. However, the molecular mechanism of ASN toxicity has not been elucidated. This study focused on the role of extracellular ASN (eASN) in regulation of transcription of sirtuins (Sirts) and DNA-bound poly(ADP-ribose) polymerases (PARPs) - proteins crucial for cells' survival/death. Our results indicate that eASN enhanced the free radicals level, decreased mitochondria membrane potential, cells viability and activated cells' death...
January 3, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28049091/taspine-derivative-12k-suppressed-a549-cell-migration-through-the-wnt-%C3%AE-catenin-and-ephrinb2-signaling-pathway
#13
Bingling Dai, Yujiao Ma, Tianfeng Yang, Wenjie Wang, Yanmin Zhang
12k, a taspine derivative, has been demonstrated to have the potent anti-tumor activity in lung cancer and colorectal cancer. The study aims to further explore the underlying mechanisms of 12k on A549 cell migration in vitro. Our data demonstrated that 12k negatively regulated Wnt signaling pathway by suppressing the phosphorylation of LRP5/6, and inhibiting the expression and nuclear translocation of β-catenin. 12k was shown to downregulate MMP3 and MMP7 expression which regulated by β-catenin interacts with TCF/LEF in the nucleus, and effectively impaired the related migration protein expression of MMP2 and MMP9 in A549 cells...
December 31, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28043667/a-sirtuin-1-mmp2-prognostic-index-for-myocardial-infarction-in-patients-with-advanced-coronary-artery-disease
#14
Ilias P Doulamis, Aspasia I Tzani, Panagiotis S Konstantopoulos, George Samanidis, Georgios Georgiopoulos, Konstantinos P Toutouzas, Despina N Perrea, Konstantinos G Perreas
BACKGROUND: Sirtuin 1 (SIRT1) appears to play a protective role against endothelial dysfunction and oxidative stress. Instead, matrix metalloproteinase 2 (MMP2) is involved in acute coronary events, by promoting tissue remodeling. This study sought to determine the clinical value of a prognostic index arising from the combination of these two biomarkers for myocardial infarction (MI) in patients with advanced coronary artery disease. METHODS: Eighty-one patients with advanced coronary artery disease planned for open heart surgery were prospectively enrolled...
December 23, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28043137/pegylated-cationic-vectors-containing-a-protease-sensitive-peptide-as-a-mirna-delivery-system-for-treating-breast-cancer
#15
Ye Zeng, Zixuan Zhou, Minmin Fan, Tao Gong, Zhirong Zhang, Xun Sun
Several targeted drug delivery systems have recently been developed to increase the bioavailability of a drug at its site of action, allowing simultaneous reduction of the total necessary drug dose as well as side effects. Here, we designed a cationic gene vector containing matrix metalloproteinase-2 (MMP2)-cleavable substrate peptides that specifically target tumor sites where MMP2 levels are high. The targeted delivery system is fabricated by linking enzyme-cleavable polyethylene glycol (PEG) derivatives to cationic β-cyclodextrin-polyethylenimine conjugates, which reduce the toxicity of polyethylenimine and condense the therapeutic cargo...
January 3, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28030785/aldehyde-dehydrogenase-2-protects-against-oxidative-stress-associated-with-pulmonary-arterial-hypertension
#16
Tao Xu, Shuangyue Liu, Tingting Ma, Ziyi Jia, Zhifei Zhang, Aimei Wang
The cardioprotective benefits of aldehyde dehydrogenase 2 (ALDH2) are well established, although the regulatory role of ALDH2 in vascular remodeling in pulmonary arterial hypertension (PAH) is largely unknown. ALDH2 potently regulates the metabolism of aldehydes such as 4-hydroxynonenal (4-HNE), the endogenous product of lipid peroxidation. Thus, we hypothesized that ALDH2 ameliorates the proliferation and migration of human pulmonary artery smooth muscle cells (HPASMCs) by inhibiting 4-HNE accumulation and regulating downstream signaling pathways, thereby ameliorating pulmonary vascular remodeling...
December 21, 2016: Redox Biology
https://www.readbyqxmd.com/read/28026822/the-matrix-metalloproteinase-in-larynx-cancer
#17
Weronika Lucas Grzelczyk, Janusz Szemraj, Magdalena Józefowicz-Korczyńska
One of the most common carcinoma occurring in the head and neck is laryngeal cancer. Despite the rapid scientific advances in medicine the prognosis for patients with such type of disease is not satisfying. In the last few years matrix metalloproteinases ‑ MMPs and their tissue inhibitors - TIMPs, mostly MMP‑2 and MMP‑9, arouses a great interest, especially in the process of carcinogenesis. It seems that their impact in the formation and development of laryngeal cancer is significant. MMPs a group of zinc‑ and calcium‑ dependent endopeptidases play crucial role extracellular matrix collagen degradation...
December 8, 2016: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28012923/anti-inflammatory-effects-of-ethanolic-extract-of-rosmarinus-officinalis-l-and-rosmarinic-acid-in-a-rat-model-of-neuropathic-pain
#18
Mahboobeh Ghasemzadeh Rahbardar, Bahareh Amin, Soghra Mehri, Seyed Javad Mirnajafi-Zadeh, Hossein Hosseinzadeh
BACKGROUND: Rosemary, Rosmarinus (R.) officinalis L. is a well-known plant with several useful properties such as analgesic, anti-inflammatory and anti-neurodegenerative. It has been used in folk medicine to alleviate rheumatic pain, stomachache and dysmenorrhea. Rosemary has several constituents such as rosmarinic acid which can be responsible for therapeutic properties been noted with rosemary. The aim of this study was to investigate the potential anti-inflammatory effects of R. officinalis and rosmarinic acid in a rat model of sciatic nerve chronic constriction injury (CCI)-induced neuropathic pain to verify usage of rosemary in folk medicine...
December 22, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28009991/low-expression-of-rap1gap-is-associated-with-epithelial-mesenchymal-transition-emt-and-poor-prognosis-in-gastric-cancer
#19
Ya Yang, Jia Zhang, Yan Yan, Hui Cai, Min Li, Kai Sun, Jizhao Wang, Xu Liu, Jiansheng Wang, Xiaoyi Duan
Rap1GAP is a crucial tumor suppressor, but its role in gastric cancer (GC) is little investigated. In this study, we found that the expression of Rap1GAP was decreased in GC. Low expression of Rap1GAP was positively correlated with advanced pTNM stage, Borrmann types, tumor diameter and poor prognosis in patients with GC. Low expression of Rap1GAP correlated with loss of E-cadherin expression, and anomalous positivity of MMP2 expression. Multivariate analysis showed that low expression of Rap1GAP was an independent prognostic factor...
December 21, 2016: Oncotarget
https://www.readbyqxmd.com/read/28007652/characteristics-of-sulfasalazine-induced-cytotoxicity-in-c6-rat-glioma-cells
#20
Raffaela Silvestre Ignarro, Gustavo Facchini, Daniela Rodrigues de Melo, Karin Juliane Pelizzaro-Rocha, Carmen Veríssima Ferreira, Roger Frigério Castilho, Fabio Rogerio
Glioblastoma is the most aggressive primary brain tumor. Surgical resection, radiotherapy and temozolomide (TMZ), an alkylating agent, is the standard of care. Glioma cells may synthetize the antioxidant glutathione by importing cystine through a cystine/glutamate antiporter, which is inhibited by sulfasalazine (SAS). C6 rat glioma cells are largely used in in vitro and in vivo models for developing new glioblastoma treatment strategies. We treated C6 cells with 25μM TMZ and/or 0.25mM or 0.5mM SAS for 1, 3 or 5days and evaluated viability, apoptosis, total glutathione levels and metalloproteinase MMP2 and MMP9 activities...
December 19, 2016: Neuroscience Letters
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