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International Journal of Medical Sciences

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https://www.readbyqxmd.com/read/29910679/the-suppression-of-dusp5-expression-correlates-with-paclitaxel-resistance-and-poor-prognosis-in-basal-like-breast-cancer
#1
Tieju Liu, Huizhi Sun, Shiqi Liu, Zhao Yang, Linqi Li, Nan Yao, Siqi Cheng, Xueyi Dong, Xiaohui Liang, Chen Chen, Yi Wang, Xiulan Zhao
Basal-like breast cancer (BLBC) is resistant to endocrinotherapy and targeted therapy and new molecular therapies are needed for BLBC. In this study, we evaluated the role of DUSP1 and DUSP5, negative regulators of mitogen-activated protein kinase pathway, in the aggressiveness of BLBC. MDA-MB-231 cells were given paclitaxel (PTX) treatment and subsequently PTX resistant cell clones were established. Microarray analysis, real-time quantitative reverse transcription PCR (qRT-PCR), and online analysis of large cohorts of breast cancer patients were performed...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29910678/prognostic-utility-of-soluble-suppression-of-tumorigenicity-2-level-as-a-predictor-of-clinical-outcomes-in-incident-hemodialysis-patients
#2
Suk Min Seo, Sun Hwa Kim, Yaeni Kim, Hye Eun Yoon, Seok Joon Shin
Background: The suppression of tumorigenicity 2 (ST2) is associated with cardiac remodeling and tissue fibrosis. It is well known as a novel biomarker on predictor of cardiovascular events in patients with heart failure. In patients needed to start dialysis treatment, most of them had congestive heart failure. However, the prognostic implications of serum ST2 level are unknown in incident hemodialysis patients. Methods: A total 182 patients undergoing incident hemodialysis were consecutively enrolled from November 2011 to December 2014...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29910677/propofol-attenuates-osteoclastogenesis-by-lowering-rankl-opg-ratio-in-mouse-osteoblasts
#3
Do-Won Lee, Jae-Young Kwon, Hae-Kyu Kim, Hyeon-Jeong Lee, Eun-Soo Kim, Hyae-Jin Kim, Hyung-Joon Kim, Han-Bit Lee
Bone remodeling plays an important role in the bone healing process; for example, following fracture. The relative ratio of the receptor activator of nuclear factor kappa B ligand (RANKL)/ osteoprotegerin (OPG) controls osteoclast differentiation, thereby playing a pivotal role in the regulation of bone remodeling. Propofol, a widely used anesthetic agent in orthopedic procedures, is considered to possess potential antioxidant properties owing to its structural similarity to α-tocopherol. Antioxidants are known to enhance bone healing...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29910676/lipid-emulsion-for-treating-local-anesthetic-systemic-toxicity
#4
REVIEW
Seong-Ho Ok, Jeong-Min Hong, Soo Hee Lee, Ju-Tae Sohn
Lipid emulsion has been shown to be an effective treatment for systemic toxicity induced by local anesthetics, which is reflected in case reports. A systemic review and meta-analysis confirm the efficacy of this treatment. Investigators have suggested mechanisms associated with the lipid emulsion-mediated recovery of cardiovascular collapse caused by local anesthetic systemic toxicity; these mechanisms include lipid sink, a widely accepted theory in which highly soluble local anesthetics (particularly bupivacaine) are absorbed into the lipid phase of plasma from tissues (e...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29910675/differential-expression-of-circrnas-in-embryonic-heart-tissue-associated-with-ventricular-septal-defect
#5
Heng Liu, Yin Hu, Bin Zhuang, Jing Yin, Xiao-Hui Chen, Juan Wang, Meng-Meng Li, Jing Xu, Xing-Yun Wang, Zhang-Bin Yu, Shu-Ping Han
Objectives: To explore and validate the differential expression of circRNAs in the myocardium of congenital ventricular septal defect (VSD) and to explore a new avenue of research regarding the pathological mechanisms of VSD. Methods: We detected circRNAs expression profiles in heart tissues taken from six aborted fetuses with VSD and normal group using circRNA microarray. Some differentially expressed circRNAs were studied by bioinformatics analysis. Finally, quantitative reverse transcription polymerase chain reaction (qRT-PCR) was performed to confirm these results...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29910674/low-dose-evans-blue-dye-for-near-infrared-fluorescence-imaging-in-photothrombotic-stroke-model
#6
Hye-Won Ryu, Wonbong Lim, Danbi Jo, Subin Kim, Jong Tae Park, Jung-Joon Min, Hoon Hyun, Hyung-Seok Kim
Background: Evans blue dye (EBD) is the most common indicator to analyze the extent of blood-brain barrier (BBB) breakdown in several neurological disease models. However, the high-dose of EBD (51.9 mg/kg) is usually required for visualization of blue color by the human eye that brings potential safety issues. Methods: To solve this problem, low-dose of EBD was applied for the near-infrared (NIR) fluorescence-assisted quantitation of BBB breakdown in photothrombotic stoke model. Animals were allocated to seven dose groups ranging from 1...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29910673/development-of-an-anti-adhesive-membrane-for-use-in-video-assisted-thoracic-surgery
#7
Akiko Uemura, Toshiharu Fukayama, Takashi Tanaka, Yasuko Hasegawa-Baba, Makoto Shibutani, Ryou Tanaka
Background : The need to prevent postoperative adhesions after surgery has been considered a significant challenge in thoracic surgery, especially with the advent of video-assisted thoracic surgery (VATS). While preventive materials for postoperative adhesions have been studied for many years, they are all still in the development phases. Methods : In this animal study, an insoluble hyaluronic acid membrane was used in VATS for wedge resection to test its operability and to examine the body's response to the membrane...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29910672/chronic-alcohol-consumption-inhibits-autophagy-and-promotes-apoptosis-in-the-liver
#8
Mario Menk, Jan Adriaan Graw, Deniz Poyraz, Nadine Möbius, Claudia D Spies, Clarissa von Haefen
Background: Chronic alcohol consumption is a major cause of liver injury. However, the molecular mechanisms by which alcohol impairs hepatocellular function and induces cell death remain unclear. Macroautophagy (hereafter called 'autophagy') is a degradation pathway involved in the survival or death of cells during conditions of cellular stress. This study examines the effect of chronic alcohol consumption on hepatocellular autophagy in an animal model. Methods: During a 12-week period male Wistar rats were fed a Lieber-DeCarli diet containing 5% alcohol (EtOH group; n=10), or an isocaloric diet (control group; n=10)...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29910671/inhibition-of-crl-nedd8-pathway-as-a-new-approach-to-enhance-atra-induced-differentiation-of-acute-promyelocytic-leukemia-cells
#9
Shuyuan Liu, Jinhua Wan, Yunyuan Kong, Yonglu Zhang, Lagen Wan, Zhanglin Zhang
The cullin-RING ligase (CRL)-NEDD8 pathway maintains essential cellular processes, including cell cycle progression, apoptosis, autophagy, DNA repair, antigen processing and signal transduction. Growing evidence demonstrates that the alteration of the CRL-NEDD8 pathway in some cancers constitutes an attractive target for therapeutic intervention, but the roles of CRL-NEDD8 pathway in acute promyelocytic leukemia (APL) is still unclear. In the present study, we found that ATRA could decrease the expression of NEDD8-activating enzyme E1 (NAE1) and inhibit the neddylation of cullin1 and cullin3 in the APL cell line NB4...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29910670/icos-signal-facilitates-foxp3-transcription-to-favor-suppressive-function-of-regulatory-t-cells
#10
Qianmei Chen, Lijun Mo, Xiangsheng Cai, Lili Wei, Zhengneng Xie, Hongwei Li, Jinlong Li, Zhiming Hu
Inducible costimulator (ICOS) plays an important role in the suppressive immunity mediated by regulatory T cells (Tregs), but the molecular regulation mechanism is not well known. Here we performed a study to explore the possible mechanism by which ICOS regulates the suppressive functions and survival of Tregs. This study showed that both the ICOS and CD28 signal could promote the survival of Tregs. However, ICOS but not CD28 improved the suppressive function of Tregs. Mechanistic studies demonstrated that ICOS could induce the transcription activity of Foxp3, by facilitating the nuclear factor of activated T cells (NFAT): Foxp3 over NFAT: activator protein 1 (AP-1)...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29910669/new-trends-in-the-therapeutic-approach-to-metastatic-colorectal-cancer
#11
REVIEW
Julia Sánchez-Gundín, Ana María Fernández-Carballido, Lidia Martínez-Valdivieso, Dolores Barreda-Hernández, Ana Isabel Torres-Suárez
Important developments in chemotherapy for metastatic colorectal cancer over the last years are reviewed, with an emphasis on the most recently published data from clinical trials. The systematic review of current literature was conducted involving Pubmed Central® research and full articles were obtained and analyzed when appropriate. Fluorouracil still constitutes the backbone of metastatic colorectal cancer treatment; fluorouracil combination plus either irinotecan (FOLFIRI), oxaliplatin (FOLFOX) or capecitabine (CAPOX or XELOX) are chemotherapy protocols established as treatments producing similar outcomes...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29725257/impact-of-matrix-metalloproteinase-11-gene-polymorphisms-upon-the-development-and-progression-of-hepatocellular-carcinoma
#12
Bin Wang, Chin-Jung Hsu, Hsiang-Lin Lee, Chia-Hsuan Chou, Chen-Ming Su, Shun-Fa Yang, Chih-Hsin Tang
Hepatocellular carcinoma (HCC) is a liver malignancy and a major cause of cancer mortality worldwide. Matrix metalloproteinase-11 (MMP-11), also known as stromelysin-3, plays a critical role during tumor migration, invasion and metastasis. Here, we report on the association between five single nucleotide polymorphisms (SNPs) - rs738791, rs2267029, rs738792, rs28382575, and rs131451 - of the MMP-11 gene and HCC susceptibility, as well as clinical outcomes, in 293 patients with HCC and in 586 cancer-free controls...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29725256/verteporfin-inhibits-yap-induced-bladder-cancer-cell-growth-and-invasion-via-hippo-signaling-pathway
#13
Liang Dong, Fan Lin, Wanjun Wu, Yuchen Liu, Weiren Huang
The highly conserved Hippo signaling pathway is one of the most important pathways involved in tumorigenesis and progress. Previous studies show that YAP, the transcriptional coactivator of Hippo pathway, is expressed highly in many clinical bladder cancer tissues and plays crucial role on bladder cancer progress. To find the YAP-specific target drug and its molecular mechanism in bladder cancer, we apply Verteporfin (VP), a YAP specific inhibitor to function as anti-bladder cancer drug and discover that VP is able to inhibit bladder cancer cell growth and invasion in a dosage dependent manner...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29725255/amacr-overexpression-acts-as-a-negative-prognostic-factor-in-oral-squamous-cell-carcinoma
#14
Hong-Lin He, Ying-En Lee, Min-Te Chang, Yow-Ling Shiue, Shih-Lun Chang, Tzu-Ju Chen, Chang-Ta Chiu
Background : Alpha-methylacyl-CoA racemase (AMACR) is a key enzyme responsible for the metabolism of branched-chain fatty acids. It has been found to be an important prognostic factor in numerous types of cancers. This study was aimed to investigate the expression of AMACR and its prognostic significance in patients with oral squamous cell carcinoma (SCC). Methods : Analysis of publicly available microarray data of oral SCC revealed that AMACR was significantly upregulated in tumor tissue compared with normal mucosa...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29725254/resveratrol-attenuates-denervation-induced-muscle-atrophy-due-to-the-blockade-of-atrogin-1-and-p62-accumulation
#15
Yuka Asami, Miki Aizawa, Masakazu Kinoshita, Junji Ishikawa, Kunihiro Sakuma
Decrease in activity stress induces skeletal muscle atrophy. A previous study showed that treatment with resveratrol inhibits muscular atrophy in mdx mice, a model of DMD. However, almost all studies using resveratrol supplementation have only looked at adaptive changes in the muscle weight. The present study was designed to elucidate whether the resveratrol-inducing attenuation of skeletal muscle actually reflects the adaptation of muscle fibers themselves, based on the modulation of atrogin-1- or p62-dependent signaling...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29725253/anti-biofilm-and-anti-virulence-efficacy-of-celastrol-against-stenotrophomonas-maltophilia
#16
Hye-Rim Kim, Dongsup Lee, Yong-Bin Eom
Stenotrophomonas maltophilia is a multi-drug resistant opportunistic pathogen that causes nosocomial infections in immunocompromised patients. This pathogen is difficult to treat owing to its intrinsic multidrug resistance and ability to form antimicrobial-tolerant biofilms. In the present study, we aimed to assess the potential use of celastrol as a novel anti-biofilm and/or anti-virulence agent against S. maltophilia . Results showed that celastrol at its sub-inhibitory doses decreased biofilm formation and disrupt the established biofilms produced by S...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29725252/potential-mirna-target-interactions-for-the-screening-of-gastric-carcinoma-development-in-gastric-adenoma-dysplasia
#17
Yu Jin Kim, Ki-Chul Hwang, Sang Woo Kim, Yong Chan Lee
Although miRNA markers have been identified for the pathological development of gastric adenocarcinoma (GAC), the underlying molecule mechanism are still not fully understood. Moreover, some gastric adenoma/dysplasia may progress to GAC. In this study, the miRNA expression profiles in normal and paired low-/high-grade dysplasia were analyzed using Affymetrix Gene-Chip miRNA arrays. Of the total 2578 mature miRNA probe sets, ~1600 showed positive signals when the between normal and paired low-/high-grade dysplasia were compared...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29725251/glucagon-like-peptide-1-receptor-agonist-and-glucagon-increase-glucose-stimulated-insulin-secretion-in-beta-cells-via-distinct-adenylyl-cyclases
#18
Young-Sun Lee, Hee-Sook Jun
Diabetes mellitus is a chronic disease in which the pancreas no longer produces enough insulin. Pancreatic alpha cell mass increases in response to insufficient insulin secretion. However, the reason for this increase is not clear. It is possible that the increased alpha-cells may stimulate compensatory insulin release in response to the insufficient insulin such as insulin resistance. In this study, we investigated whether glucagon and glucagon-like peptide-1 (GLP-1), hormones produced by alpha cells, contribute to insulin secretion in INS-1 cells, a beta cell line...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29725250/lipopolysaccharide-mediates-the-destruction-of-intercellular-tight-junction-among-renal-tubular-epithelial-cells-via-rhot1-smad-4-jam-3-pathway
#19
Shixiang Zheng, Zhuoyong Lin, Zhongwei Liu, Yipeng Liu, Wenwei Wu
Background: The morbidity of sepsis induced acute kidney injury remains unacceptable high and the mechanisms of that disease remains unclear. For urine backleak and intercellular tight junction among tubular epithelial cells (TECs) destruction often occur during sepsis induced acute kidney injury, we examined whether lipopolysaccharide could damage intercellular tight junction among TECs and associated mechanisms in our present study. Methods: HK-2 cells were cultured, transfected with different SiRNAs and stimulated with LPS and PYR-41...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29725249/single-nucleotide-polymorphisms-and-haplotypes-of-carbonic-anhydrase-9-can-predict-invasive-squamous-cell-carcinoma-of-uterine-cervix
#20
Huang-Pin Shen, Yi-Hsuan Hsiao, Shun-Fa Yang, Yu-Fan Liu, Jiunn-Liang Ko, Po-Hui Wang
This study aimed to explore the involvement of carbonic anhydrase 9 (CA9) single nucleotide polymorphisms (SNPs) in the development of invasive cancer of uterine cervix for Taiwanese women. Ninety-seven patients with cervical invasive squamous cell carcinoma and 88 with preinvasive squamous cell lesions as well as 324 control women were recruited. Two CA9 SNPs in exons, including rs2071676 (+201, G/A) in exon 1 and rs3829078 (+1081, A/G) in exon 7, rs1048638 (+1584, C/A) in 3'-untranslated region of exon 11, as well as an 18-base pair deletion/insertion (376deltion393) in exon 1 were selected and their genotypic distributions were determined by real-time polymerase chain reaction...
2018: International Journal of Medical Sciences
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