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https://www.readbyqxmd.com/read/29581733/decreased-expression-of-sirtuin-3-protein-correlates-with-early-stage-chronic-renal-allograft-dysfunction-in-a-rat-kidney-model
#1
Qin Zhou, Daoyuan Lv, Yue Xia, Zhihong Zhao, Hequn Zou
Chronic renal allograft dysfunction (CRAD) is the primary factor affecting the long-term survival of patients who have undergone renal transplantation. Oxidative stress and inflammation serve an important role in the pathological damage caused by CRAD in the early post-transplantation phase. Previous studies have demonstrated that sirtuin 3 (sirt3) protects cells from oxidative stress and inflammation. A model of renal orthotopic transplantation was established in the current study and kidney samples were harvested from the rats 12 weeks following surgery...
April 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29466800/the-association-between-oxidative-stress-alleviation-via-sulforaphane-induced-nrf2-ho-1-nqo-1-signaling-pathway-activation-and-chronic-renal-allograft-dysfunction-improvement
#2
Daoyuan Lv, Qin Zhou, Yue Xia, Xu You, Zhihong Zhao, Yongqiang Li, Hequn Zou
BACKGROUND/AIMS: Chronic renal allograft dysfunction (CRAD) is a leading cause of long-term renal allograft loss. Oxidative stress may account for the nonspecific interstitial fibrosis and tubular atrophy that occur in CRAD. An antioxidant intervention via Nrf2 signaling pathway activation might be a promising therapy for some kidney diseases. The present paper investigates whether there is an association between oxidative stress alleviation via sulforaphane-induced Nrf2-HO-1/NQO-1 signaling pathway activation and CRAD improvement...
2018: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29452170/expression-and-significance-of-sirt1-in-renal-allografts-at-the-early-stage-of-chronic-renal-allograft-dysfunction
#3
Yue Xia, Jin Deng, Qin Zhou, Xiaofei Shao, Xingyan Yang, Mengjiao Sha, Hequn Zou
OBJECTIVE: To investigate the expression and significance of Sirt1 in renal allografts at the early stage of chronic renal allograft dysfunction (CRAD). METHODS: CRAD rat models were established using classical orthotopic F344-Lewis kidney transplantation. F344 and Lewis uninephrectomized rats were used as controls. Twelve weeks after the operation, the rats were sacrificed for renal function, histological, immunohistochemistry and molecular biological analyses...
February 13, 2018: Transplant Immunology
https://www.readbyqxmd.com/read/29435080/a-novel-approach-to-glioma-therapy-using-an-oncolytic-adenovirus-with-two-specific-promoters
#4
Feng Liu, Kaya Xu, Hua Yang, Yuming Li, Jian Liu, Jixiang Wang, Zhizhong Guan
Gliomas are the most common type of primary brain tumor in adults, where more than half of the cases are malignant, and the prognosis is poor. The early viral 1A (E1A) protein has been widely recognized to be essential for adenoviral replication and production of progeny virions in human cells, a process that is regulated by human telomerase reverse transcriptase. The p53 gene, as a tumor suppressor, regulates diverse cellular processes, including cell cycle arrest, cell autophagy, senescence and apoptosis...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29388837/adenovirus-lacking-e1b-efficiently-induces-cytopathic-effect-in-hpv-16-positive-murine-cancer-cells-via-virus-replication-and-apoptosis
#5
Elvis Martinez-Jaramillo, Rodolfo Garza-Morales, Stephen L Wechman, Roberto Montes de Oca-Luna, Odila Saucedo-Cardenas, Haval Shirwan, Esma Yolcu, Kelly M McMasters, Jorge G Gomez-Gutierrez
Conditionally replicative adenoviruses (CRAds) replicate poorly in murine cancer cells; however, E1b-deleted CRAds may replicate effectively in HPV16-E6/E7-positive murine cancer cells (TC-1). The HPV16 E7 open reading frame encodes functions analogous to these deleted adenovirus E1 proteins. In this study, an E1b-deleted CRAd (Adhz60) was evaluated for its ability to replicate and induce oncolysis in TC-1 cells. Adhz60-mediated oncolysis was similar in TC-1 and HeLa cells. Productive viral replication was evident based on expression of E1A and hexon, production of infectious virus progeny, and Adhz60-induced apoptosis...
January 2, 2018: Cancer Investigation
https://www.readbyqxmd.com/read/29311417/theoretical-and-experimental-comparison-of-proton-and-helium-beam-radiography-using-silicon-pixel-detectors
#6
T Gehrke, C Amato, S Berke, M Martišíková
Ion-beam radiography (iRad) could potentially improve the quality control of ion-beam therapy. The main advantage of iRad is the possibility to directly measure the integrated stopping power. Until now there is no clinical implementation of iRad. Topics of ongoing research include developing dedicated detection systems to achieve the desired spatial resolution (SR) and investigating different ion types as imaging radiation. This work focuses on the theoretical and experimental comparison of proton (pRad) and helium-beam radiography (αRad)...
February 5, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29228615/combined-therapy-of-colon-carcinomas-with-an-oncolytic-adenovirus-and-valproic-acid
#7
Christian Bressy, Dragomira Majhen, Najat Raddi, Wael Jdey, Gaétan Cornilleau, Léna Zig, Josée Guirouilh-Barbat, Bernard S Lopez, Olivia Bawa, Paule Opolon, Elodie Grellier, Karim Benihoud
The anti-tumor potential of oncolytic adenoviruses (CRAds) has been demonstrated in preclinical and clinical studies. While these agents failed to eradicate tumors when used as a monotherapy, they may be more effective if combined with conventional treatments such as radiotherapy or chemotherapy. This study seeks to evaluate the combination of a CRAd bearing a ∆24 deletion in E1A with valproic acid (VPA), a histone deacetylase inhibitor, for the treatment of human colon carcinomas. This combination led to a strong inhibition of cell growth both in vitro and in vivo compared to treatment with CRAd or VPA alone...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29144842/a-novel-fiber-chimeric-conditionally-replicative-adenovirus-ad5-f35-for-tumor-therapy
#8
Ming Yang, Chun Sheng Yang, WenWen Guo, JianQin Tang, Qian Huang, ShouXin Feng, AiJun Jiang, XiFeng Xu, Guan Jiang, Yan Qun Liu
Significant progress has been made in the diagnosis and treatment of cancer; however, significant challenges remain. Conditionally replicating adenoviruses (CRAds), which not only kill cancer cells, but also serve as vectors to express therapeutic genes, are a novel and effective method to treat cancer. However, most adenoviruses are Ad5, which infect cells through the coxsackie and adenovirus receptor (CAR). The transduction efficacy of Ad5 is restricted because of the absent or low expression of CAR on several cancer cells...
November 2, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29076943/computational-parametric-study-of-the-axial-and-radial-clearances-in-a-centrifugal-rotary-blood-pump
#9
Mohammad Amin Rezaienia, Gordon Paul, Eldad Avital, Martin T Rothman, Theodosios Korakianitis
In centrifugal rotary blood pumps (RBP), clearances are a critical parameter in determining blood trauma. This study investigates the effect of axial clearance (Cax) and radial clearance (Crad) on the hydrodynamic and hemolytic performance of a centrifugal RBP. A centrifugal pump was parameterized so that it could be defined by geometric variables Cax and Crad. Optimal Latin hypercube sampling was used to determine design points based on Cax, Crad, and rotor speed (ω). For each design point, a computational simulation was conducted to determine efficiency (η) and normalized index of hemolysis (NIH)...
October 23, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28792501/a-3-dimensional-mathematical-model-of-microbial-proliferation-that-generates-the-characteristic-cumulative-relative-abundance-distributions-in-gut-microbiomes
#10
Lena Takayasu, Wataru Suda, Eiichiro Watanabe, Shinji Fukuda, Kageyasu Takanashi, Hiroshi Ohno, Misako Takayasu, Hideki Takayasu, Masahira Hattori
The gut microbiome is highly variable among individuals, largely due to differences in host lifestyle and physiology. However, little is known about the underlying processes or rules that shape the complex microbial community. In this paper, we show that the cumulative relative abundance distribution (CRAD) of microbial species can be approximated by a power law function, and found that the power exponent of CRADs generated from 16S rRNA gene and metagenomic data for normal gut microbiomes of humans and mice was similar consistently with ∼0...
2017: PloS One
https://www.readbyqxmd.com/read/28789701/a-novel-bladder-cancer-specific-oncolytic-adenovirus-by-cd46-and-its-effect-combined-with-cisplatin-against-cancer-cells-of-car-negative-expression
#11
Wenjuan Cao, Junqiang Tian, Chong Li, Yanjun Gao, Xingchen Liu, Jianzhong Lu, Yuhan Wang, Zhiping Wang, Robert S Svatek, Ronald Rodriguez
BACKGROUND: Conditionally replicative oncolytic adenoviruses (CRAds) display significant anti-tumor effects. However, the traditional adenovirus of serotype 5 (Ad5) entering cancer cells via coxsackie virus and adenovirus receptor (CAR) can't be utilized for bladder cancer with low expression of CAR, which limits the application of Ad5. METHODS: We utilized Ad5/F11p containing the chimeric fiber gene encoding the Ad5 fiber tail domain and Ad11p fiber shaft and knob domains to construct bladder cancer-specific chimeric type viruses Ad5/F11p-PSCAE-UPII-E1A, which can infect bladder cancer cells mediated by CD46 molecule...
August 8, 2017: Virology Journal
https://www.readbyqxmd.com/read/28717395/brain-imaging-before-primary-lung-cancer-resection-a-controversial-topic
#12
Zoe Hudson, Eveline Internullo, Anthony Edey, Isabel Laurence, Davide Bianchi, Alfredo Addeo
OBJECTIVE: International and national recommendations for brain imaging in patients planned to undergo potentially curative resection of non-small-cell lung cancer (NSCLC) are variably implemented throughout the United Kingdom [Hudson BJ, Crawford MB, and Curtin J et al (2015) Brain imaging in lung cancer patients without symptoms of brain metastases: a national survey of current practice in EnglandClin Radiol https://doi.org/10.1016/j.crad.2015.02.007]. However, the recommendations are not based on high-quality evidence and do not take into account cost implications and local resources...
2017: Ecancermedicalscience
https://www.readbyqxmd.com/read/28651743/the-combination-of-nk-and-cd8-t-cells-with-ccl20-il15-armed-oncolytic-adenoviruses-enhances-the-growth-suppression-of-tert-positive-tumor-cells
#13
Jun-Feng Ye, Wen-Xi Qi, Ming-Yuan Liu, Yang Li
Adoptive immunotherapy and targeted gene therapy have been extensively used to eliminate tumor cells. The combination treatment is capable of efficiently generating an effective antitumor immune response and disrupting tumor-induced tolerance. Moreover, effective antitumor immune responses are dependent on coordinate interaction among various effector cells. This study focused on whether the combination of cytotoxic effector cell-based adoptive immunotherapy and CCL20/IL15-armed oncolytic adenoviruses could induce enhanced antitumor activity...
August 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28638457/upregulation-of-coxsackie-adenovirus-receptor-sensitizes-cisplatin-resistant-lung-cancer-cells-to-crad-induced-inhibition
#14
Ali Sakhawat, Yanan Liu, Ling Ma, Tahir Muhammad, Shensen Wang, Lina Zhang, Xianling Cong, Yinghui Huang
Objective. Conditionally replicating adenoviruses (CRAds) have been proven potent oncolytic viruses in previous studies. They selectively replicate in the tumor cells because of incorporated survivin promoter and ultimately lead to their killing with minimal side effects on normal tissue. Chemotherapy with cisplatin is commonly employed for treating tumors, but its cytotoxic effects and development of resistance remained major concerns to be dealt with. The aim of this study was to explore the anticancer potential of survivin regulated CRAd alone or in combination with cisplatin in the A549 lung cancer cell line and cisplatin-resistant lung cancer cell line, A549-DDPR...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28279737/targeting-tumors-with-cyclic-rgd-conjugated-lipid-nanoparticles-loaded-with-an-ir780-nir-dye-in-vitro-and-in-vivo-evaluation
#15
Jungyoon Choi, Emilie Rustique, Maxime Henry, Mélanie Guidetti, Véronique Josserand, Lucie Sancey, Jérôme Boutet, Jean-Luc Coll
Like several 50nm-large nanocarriers, lipid nanoparticles (LNPs) can passively accumulate in tumors through the Enhanced Permeability and Retention (EPR) effect. In this study, we developed PEGylated LNPs loaded with IR780 iodide as a contrast agent for NIR fluorescence imaging and modified them with cyclic RGD peptides in order to target integrin avβ3. We demonstrate a specific targeting of the receptor with cRGD-LNPs but not with cRAD-LNP and standard LNP using HEK293(β3), HEK293(β3)-αvRFP, DU145 and PC3 cell lines...
November 5, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27783867/vascular-endothelial-growth-factor-promoter-based-conditionally-replicative-adenoviruses-effectively-suppress-growth-of-malignant-pleural-mesothelioma
#16
Akiko Harada, Junji Uchino, Taishi Harada, Noriaki Nakagaki, Junko Hisasue, Masaki Fujita, Koichi Takayama
Malignant mesothelioma (MM) incidence is increasing drastically worldwide as an occupational disease resulting from asbestos exposure. However, no curative treatment for MM of advanced stage is available. Thus, new therapeutic approaches for MM are required. Because malignant pleural mesothelioma (MPM) cells spread along the pleural surface in most patients, MPM can be targeted using intrapleural therapeutic approaches. In this study, we investigated the effectiveness of the intrapleural instillation of a replication-competent adenovirus as an oncolytic agent against MPM...
January 2017: Cancer Science
https://www.readbyqxmd.com/read/27633115/mechanism-of-tacrolimus-induced-chronic-renal-fibrosis-following-transplantation-is-regulated-by-ox-ldl-and-its-receptor-lox-1
#17
Shi Deng, Tao Jin, Li Zhang, Hong Bu, Peng Zhang
Chronic renal allograft dysfunction (CRAD) is the most common cause of graft failure following renal transplantation. However, the underlying mechanisms remain to be fully elucidated. Immunosuppressants and hyperlipidemia are associated with renal fibrosis following long‑term use. The present study aimed to determine the effects of tacrolimus (FK506) and lipid metabolism disorder on CRAD. In vitro and in vivo models were used for this investigation. Cells of the mouse proximal renal tubular epithelial cell strain, NRK‑52E, were cultured either with oxidized low‑density lipoprotein (ox‑LDL), FK506, ox‑LDL combined with FK506, or vehicle, respectively...
November 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27569940/expression-and-significance-of-rantes-and-mcp-1-in-renal-tissue-with-chronic-renal-allograft-dysfunction
#18
Q Yan, H Jiang, B Wang, W Sui, H Zhou, G Zou
BACKGROUND: To investigate the expression of RANTES (regulated upon activation, normal T-cell-expressed and -secreted) and monocyte chemoattractant protein-1 (MCP-1) in renal allografts with chronic renal allograft dysfunction (CRAD), and explore its relationship with interstitial fibrosis and tubular atrophy (IF/TA). METHODS: An immunohistochemical assay and computer-assisted, genuine colored image analysis system were used to detect the expression of RANTES and MCP-1 in renal allografts with CRAD...
July 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27557721/application-of-conditionally-replicating-adenoviruses-in-tumor-early-diagnosis-technology-gene-radiation-therapy-and-chemotherapy
#19
REVIEW
Shun Li, Mengting Ou, Guixue Wang, Liling Tang
Conditionally replicating adenoviruses (CRAds), or known as replication-selective adenoviruses, were discovered as oncolytic gene vectors several years ago. They have a strong ability of scavenging tumor and lesser toxicity to normal tissue. CRAds not only have a tumor-killing ability but also can combine with gene therapy, radiotherapy, and chemotherapy to induce tumor cell apoptosis. In this paper, we review the structure of CRAds and CRAd vectors and summarize the current application of CRAds in tumor detection as well as in radiotherapy and suicide gene-mediating chemotherapy...
October 2016: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/27450327/mesenchymal-stem-cells-deliver-and-release-conditionally-replicative-adenovirus-depending-on-hepatic-differentiation-to-eliminate-hepatocellular-carcinoma-cells-specifically
#20
Xiangfei Yuan, Qing Zhang, Zhenzhen Li, Xiaolong Zhang, Shiqi Bao, Dongmei Fan, Yongxin Ru, Shuxu Dong, Yizhi Zhang, Yanjun Zhang, Zhou Ye, Dongsheng Xiong
Currently, it is a key challenge to remove the postsurgical residuals and metastasis of hepatocellular carcinoma (HCC). Oncolytic adenoviral virotherapy is an attractive treatment modality for cancer; however, the difficulty remains regarding its intravenous administration. The aim of this study was to develop a targeted therapeutic system which has great potential to overcome the postsurgical residuals and metastasis of HCC. In this system, we developed a conditionally replicative adenovirus (CRAd) loaded on human umbilical cord-derived mesenchymal stem cells (HUMSCs), in which the CRAd contained an adenovirus E1A gene dual regulated by α-fetoprotein promoter and microRNA-122 target sequence...
October 10, 2016: Cancer Letters
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