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Leos Pleva, Pavel Kukla, Ota Hlinomaz
Coronary stent implantation has significantly improved percutaneous coronary intervention and enabled the management of early complications of plain balloon angioplasty. However, a new complication has accompanied these improvements: in-stent restenosis (ISR) arising from neointimal hyperplasia. ISR after coronary angioplasty is currently one of the main limitations of this method, leading to the recurrence of exertional angina pectoris or acute coronary syndromes. The clinical incidence of ISR after bare-metal stent (BMS) implantation is approximately 20%-35%...
February 2018: Journal of Geriatric Cardiology: JGC
Jian-Long Wang, Zheng Qin, Zhi-Jian Wang, Dong-Mei Shi, Yu-Yang Liu, Ying-Xin Zhao, Li-Xia Yang, Wan-Jun Cheng, Yu-Jie Zhou
Background: Percutaneous coronary intervention (PCI) had become the major therapeutic procedure for coronary artery disease (CAD), but the high rate of in-stent restenosis (ISR) still remained an unsolved clinical problem in clinical practice. Increasing evidences suggested that diabetes mellitus (DM) was a major risk factor for ISR, but the risk predictors of ISR in CAD patients with DM had not been well characterized. The aim of this study was to investigate the clinical and angiographic characteristic predictors significantly associated with the occurrence of ISR in diabetic patients following coronary stenting with drug-eluting stent (DES)...
February 2018: Journal of Geriatric Cardiology: JGC
Lei Gao, Qin Qin, Shao-Liang Chen, Hui Chen, Le-Feng Wang, Ze-Ning Jin, Hui Li, Jun Zhang, Jian-An Wang, Yang Zheng, Guo-Sheng Fu, Yun-Dai Chen
No abstract text is available yet for this article.
February 2018: Journal of Geriatric Cardiology: JGC
Weixiao Lu, Baoying Guo, Xiaoyan Wang, Kaida Xu, Pengzhi Qi
The receptor for activated C kinase 1 (RACK1) is a intracellular receptor for the protein kinase C family which mediates various biological processes. Here, a novel RACK1 gene termed Mc-RACK1 was identified from thick shell mussel, Mytilus coruscus. Mc-RACK1 shared typical RACK1 domains containing WD repeats, PKC phosphorylation sites, N-myristoylation sites, PKC activation sites, TK phosphorylation site and WD motifs. Mc-RACK1 was constitutively expressed in all examined tissues, and its expression in gills, haemocytes and digestive glands were significantly up-regulated upon LPS challenge...
April 9, 2018: Developmental and Comparative Immunology
Ook Song, Kyung Hwan Kim, Soo Young Lee, Chang Hyun Kim, Young Jin Kim, Hyeong Rok Kim
Purpose: The aim of this study was to identify the risk factors of stoma re-creation after closure of diverting ileostomy in patients with rectal cancer who underwent low anterior resection (LAR) or intersphincteric resection (ISR) with loop ileostomy. Methods: We retrospectively reviewed 520 consecutive patients with rectal cancer who underwent LAR or ISR with loop ileostomy from January 2005 to December 2014 at Chonnam National University Hwasun Hospital. Risk factors for stoma re-creation after ileostomy closure were evaluated...
April 2018: Annals of Surgical Treatment and Research
Jun Zhang, Xiao Zhang, Jin-Ping Zhang, Ju Han
The optimal treatment for patients with chronic symptomatic middle cerebral artery (MCA) total occlusion is not well established. In addition to medical therapy, vessel recanalisation with stenting has shown much promise, especially for patients with recurrent ischemic symptoms. Nevertheless, the incidence of symptomatic in-stent restenosis (ISR) is high, and is associated with an unfavorable prognosis. Drug coated balloons (DCBs) have been proven to be effective in treating and preventing ISR. However, the feasibility of DCBs for de novo intracranial atherothrombotic stenosis has not been previously described, especially for total occlusion lesions...
April 7, 2018: Journal of Neurointerventional Surgery
Xi Xue, David W Trost, Akhilesh K Sista
No abstract text is available yet for this article.
March 29, 2018: Clinical Imaging
Kyle D Buchanan, Rebecca Torguson, Toby Rogers, Linzhi Xu, Jiaxiang Gai, Itsik Ben-Dor, William O Suddath, Lowell F Satler, Ron Waksman
Drug-eluting stents (DES) significantly reduced the incidence of in-stent restenosis (ISR). However, ISR still exists in the contemporary DES era. Previously deemed to be a benign process, ISR leads to complex presentation and intervention. This study aimed to compare the presentation and outcome of DES-ISR versus de novo lesions. We performed a retrospective analysis of 11,666 patients receiving percutaneous coronary intervention from 2003 to 2017 and divided them into 2 groups by de novo stenosis and ISR...
March 13, 2018: American Journal of Cardiology
Xiuqin Yang, Xiaoyan Jing, Yanfang Song, Caixia Zhang, Di Liu
IFN-induced protein with tetratricopeptide repeats 2 (IFIT2) plays important roles in host defense against viral infection as revealed by studies in humans and mice. However, little is known on porcine IFIT2 (pIFIT2). Here, we performed molecular cloning, expression profile, and transcriptional regulation analysis of pIFIT2. pIFIT2 gene, located on chromosome 14, is composed of two exons and have a complete coding sequence of 1407 bp. The encoded polypeptide, 468 aa in length, has three tetratricopeptide repeat motifs...
April 6, 2018: Molecular Biology Reports
Cosmo Godino, Alessandro Beneduce, Giuseppe Ferrante, Alfonso Ielasi, Andrea Carlo Pivato, Mauro Chiarito, Alberto Cappelletti, Giulia Perfetti, Valeria Magni, Eugenio Prati, Stefania Falcone, Adele Pierri, Stefano De Martini, Matteo Montorfano, Rosario Parisi, David Rutigliano, Nicola Locuratolo, Angelo Anzuini, Maurizio Tespilli, Alberto Margonato, Alberto Benassi, Carlo Briguori, Franco Fabbiocchi, Bernhard Reimers, Antonio Bartorelli, Antonio Colombo
BACKGROUND: This study was designed to confirm in a large population of unselected patients the promising results of Ultimaster® biodegradable polymer sirolimus-eluting stent (BP-SES) already shown in previous trial. METHODS: ULISSE is an observational, multicenter, national registry evaluating all patients undergoing PCI with the Ultimaster® BP-SES. Incidence of 1-year TLF (cardiac death or target vessel MI or clinically indicated TLR) was the primary endpoint...
June 1, 2018: International Journal of Cardiology
Srikanth Battu, Sumbul Afroz, Jeevan Giddaluru, Saima Naz, Weishan Huang, Saratchandra Singh Khumukcham, Rafiq Ahmad Khan, SaleemYousuf Bhat, Insaf Ahmed Qureshi, Bramanandam Manavathi, Aleem Ahmed Khan, Avery August, Seyed Ehtesham Hasnain, Nooruddin Khan
Activation of the amino acid starvation response (AAR) increases lifespan and acute stress resistance as well as regulates inflammation. However, the underlying mechanisms remain unclear. Here, we show that activation of AAR pharmacologically by Halofuginone (HF) significantly inhibits production of the proinflammatory cytokine interleukin 1β (IL-1β) and provides protection from intestinal inflammation in mice. HF inhibits IL-1β through general control nonderepressible 2 kinase (GCN2)-dependent activation of the cytoprotective integrated stress response (ISR) pathway, resulting in rerouting of IL-1β mRNA from translationally active polysomes to inactive ribocluster complexes-such as stress granules (SGs)-via recruitment of RNA-binding proteins (RBPs) T cell-restricted intracellular antigen-1(TIA-1)/TIA-1-related (TIAR), which are further cleared through induction of autophagy...
April 5, 2018: PLoS Biology
Ana Crespillo-Casado, Zander Claes, Meng S Choy, Wolfgang Peti, Mathieu Bollen, David Ron
The integrated stress response (ISR) is regulated by kinases that phosphorylate the α subunit of translation initiation factor 2 and phosphatases that dephosphorylate it. Genetic and biochemical observations indicate that the eIF2αP-directed holophosphatase - a therapeutic target in diseases of protein misfolding - is comprised of a regulatory, PPP1R15, and a catalytic, Protein Phosphatase 1 (PP1) subunit. In mammals, there are two isoforms of the regulatory subunit, PPP1R15A and PPP1R15B, with overlapping roles in the essential function of eIF2αP dephosphorylation...
April 4, 2018: Journal of Biological Chemistry
You-Hua Huang, Qiang Xu, Tao Shen, Jian-Ke Li, Jing-Yu Sheng, Hong-Jian Shi
BACKGROUND: Even with drug-eluting stents, the risk of in-stent restenosis (ISR) remains high. The goal of this study was to investigate the use of an endothelial progenitor cell (EPC) capture stent plus regional EPC transplantation to reduce the ISR rate. METHODS: Endothelial progenitor cell capture stents were fabricated using fibrin gel and anti-CD34 plus anti-VEGFR-2 dual antibodies. Twenty male New Zealand white rabbits established as an atherosclerotic model were randomly divided into two groups: group 1 (n = 10), in which EPC capture stents were deployed into the right iliac artery; and group 2 (n = 10), in which sirolimus-eluting stents were placed...
April 3, 2018: Cardiology Journal
Elke Malzer, Caia S Dominicus, Joseph E Chambers, Jennifer A Dickens, Souradip Mookerjee, Stefan J Marciniak
BACKGROUND: Developmental pathways must be responsive to the environment. Phosphorylation of eIF2α enables a family of stress-sensing kinases to trigger the integrated stress response (ISR), which has pro-survival and developmental consequences. Bone morphogenetic proteins (BMPs) regulate multiple developmental processes in organisms from insects to mammals. RESULTS: Here we show in Drosophila that GCN2 antagonises BMP signalling through direct effects on translation and indirectly via the transcription factor crc (dATF4)...
April 3, 2018: BMC Biology
Shaoyan Liu, Yanyan Yang, Shaoyan Jiang, Ningning Tang, Jiawei Tian, Murugavel Ponnusamy, Muhammad Akram Tariq, Zhexun Lian, Hui Xin, Tao Yu
Coronary heart disease (CHD) is one of the leading disorders with the highest mortality rate. Percutaneous angioplasty and stent implantation are the currently available standard methods for the treatment of obstructive coronary artery disease. However, the stent being an exogenous substance causes several complications by promoting the proliferation of vascular smooth muscle cells, immune responses and neointima formation after implantation, leading to post-stent restenosis (ISR) and late thrombosis. The prevention of these adverse vascular events is important to achieve long-term proper functioning of the heart after stent implantation...
March 22, 2018: Atherosclerosis
Alisa F Zyryanova, Félix Weis, Alexandre Faille, Akeel Abo Alard, Ana Crespillo-Casado, Yusuke Sekine, Heather P Harding, Felicity Allen, Leopold Parts, Christophe Fromont, Peter M Fischer, Alan J Warren, David Ron
The integrated stress response (ISR) is a conserved translational and transcriptional program affecting metabolism, memory, and immunity. The ISR is mediated by stress-induced phosphorylation of eukaryotic translation initiation factor 2α (eIF2α) that attenuates the guanine nucleotide exchange factor eIF2B. A chemical inhibitor of the ISR, ISRIB, reverses the attenuation of eIF2B by phosphorylated eIF2α, protecting mice from neurodegeneration and traumatic brain injury. We describe a 4.1-angstrom-resolution cryo-electron microscopy structure of human eIF2B with an ISRIB molecule bound at the interface between the β and δ regulatory subunits...
March 30, 2018: Science
Jordan C Tsai, Lakshmi E Miller-Vedam, Aditya A Anand, Priyadarshini Jaishankar, Henry C Nguyen, Adam R Renslo, Adam Frost, Peter Walter
Regulation by the integrated stress response (ISR) converges on the phosphorylation of translation initiation factor eIF2 in response to a variety of stresses. Phosphorylation converts eIF2 from a substrate to a competitive inhibitor of its dedicated guanine nucleotide exchange factor, eIF2B, thereby inhibiting translation. ISRIB, a drug-like eIF2B activator, reverses the effects of eIF2 phosphorylation, and in rodents it enhances cognition and corrects cognitive deficits after brain injury. To determine its mechanism of action, we solved an atomic-resolution structure of ISRIB bound in a deep cleft within decameric human eIF2B by cryo-electron microscopy...
March 30, 2018: Science
Jing Nan, Yuxin Wang, Jinbo Yang, George R Stark
In response to IFNβ, the IL6 gene is activated, modestly at early times by ISGF3 (IRF9 plus tyrosine-phosphorylated STATs 1 and 2), and strongly at late times by U-ISGF3 (IRF9 plus U-STATs 1 and 2, lacking tyrosine phosphorylation). A classical IFN-stimulated response element (ISRE) at -1,513 to -1,526 in the human IL6 promoter is required. Pretreating cells with IFNβ or increasing the expression of U-STAT2 and IRF9 exogenously greatly enhances IL6 expression in response to the classical NF-κB activators IL1, TNF, and LPS...
March 26, 2018: Proceedings of the National Academy of Sciences of the United States of America
Cheng-Ping Hu, Yu Du, Yong Zhu, Chao Shi, Zheng Qin, Ying-Xin Zhao
Background: It is known that there is a definite association between platelet distribution width (PDW) and poor prognosis in patients with coronary artery disease (CAD) and type 2 diabetes mellitus (T2DM). However, there are no data available regarding the prognostic significance of PDW for in-stent restenosis (ISR) in patients with CAD and T2DM. We aimed to determine the value of PDW on admission that predicted ISR in patients with CAD and T2DM. Methods: Between January 2012 and December 2013, a total of 5232 consecutive patients diagnosed with CAD and T2DM undergoing percutaneous coronary intervention were admitted...
April 5, 2018: Chinese Medical Journal
Zheng Lou, Wei Zhang
Intersphincteric resection(ISR) is a valuable anus-preserving operation that avoids the need for permanent stoma in patients with super low rectal cancer. Recently, with the application and promotion of ISR, the rate of anus-preservation has been greatly elevated, however, some patients following ISR had poor anal function. Based on the knowledge of anal canal anatomical features for better anal function, we propose conformal sphincter-preserving operation (CSPO) for super low rectal cancer, which is a new integrated anus-preservation procedure with total mesorectal excision (TME), coloanal anastomosis, pull through resection, anal canal dissection, local resection and natural orifice transluminal endoscopic surgery technology...
March 25, 2018: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
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