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https://www.readbyqxmd.com/read/29782323/role-of-blood-brain-barrier-in-alzheimer-s-disease
#1
Zhiyou Cai, Pei-Feng Qiao, Cheng-Qun Wan, Min Cai, Nan-Kai Zhou, Qin Li
The blood-brain barrier (BBB) is involved in the pathogenesis of Alzheimer's disease (AD). BBB is a highly selective semipermeable structural and chemical barrier which ensures a stable internal environment of the brain and prevents foreign objects invading the brain tissue. BBB dysfunction induces the failure of Aβ transport from brain to the peripheral circulation across the BBB. Especially, decreased levels of LRP-1 (low density lipoprotein receptor-related protein 1) and increased levels of RAGE (receptor for advanced glycation endproducts) at the BBB can cause the failure of Aβ transport...
May 16, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29747348/-cerebral-cavernous-malformation-3-gene-deficiency-promotes-early-changes-in-alzheimer-disease-like-lesions-induced-by-low-lead-exposure
#2
S Wu, D Xia, H X Liu, H P Zhao, X H Wang, Y F Gao, Z Q Zhao, C Xiao, X M Xing, Y He
Objective: To investigate the effects of cerebral cavernous malformation 3 (CCM3) gene knockout on the lead exposure-induced blood-brain barrier malfunction in mice brain, and the relationship between CCM3 knockout and the Alzheimer's disease (AD). Methods: Wide type (WT) mice and CCM3(+)/- mice were divided into 4 groups, control group and lead exposed group in WT as well as CCM3(+/-) mice. Lead exposed groups were treated with 0.05% lead acetate in drinking water for 12 weeks, while control group drink deionized water freely...
May 6, 2018: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/29738234/coating-titania-nanoparticles-with-epoxy-containing-catechol-polymers-via-cu-0-lrp-as-intelligent-enzyme-carriers
#3
Donghao Wang, Wenyi Ding, Kaiyue Zhou, Shutong Guo, Qiang Zhang, David M Haddleton
Immobilization of enzyme could offer the biocatalyst with increased stability and important recoverability, which plays a vital role for the enzyme's industrial applications. In this study, we present a new strategy to build an intelligent enzyme carrier by coating titania nanoparticles with thermoresponsive epoxy-functionalized polymers. Zero-valent copper mediated living radical polymerization (Cu(0)-LRP) was utilized herein to copolymerize N-isopropylacrylamide (NIPAM) and glycidyl acrylate (GA), directly from an unprotected dopamine-functionalized initiator, in order to obtain an epoxy-containing polymer with terminal anchor for the "grafting to" or "one-pot" modification of titania nanoparticles...
May 8, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29727540/-laparoscopic-radical-prostatectomy-for-prostate-cancer-found-in-transurethral-resection-of-the-prostate-report-of-14-cases
#4
Shi Li, Guang-Hai Yu
Objective: To sum up the experience in the treatment of prostate cancer found in transurethral resection of the prostate (TURP) by laparoscopic radical prostatectomy (LRP). METHODS: Fourteen patients found with prostate cancer during TURP underwent LRP in our hospital between 2011 and 2016. We reviewed our experience in the treatment and analyzed the clinical and follow-up data. RESULTS: LRP was successfully performed in all the cases at 1-4 months after TURP, with a mean operation time of (113 ± 94) min (80-220 min), a mean blood loss of (188 ± 152) ml (100-500 ml), a mean catheterization time of (11...
October 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
https://www.readbyqxmd.com/read/29691035/copper-mediated-homogeneous-living-radical-polymerization-of-acrylamide-with-waxy-potato-starch-based-macroinitiator
#5
Yifei Fan, Huatang Cao, Frank van Mastrigt, Yutao Pei, Francesco Picchioni
Cu0 -mediated living radical polymerization (Cu0 -mediated LRP) was employed in this research for the synthesis of starch-g-polyacrylamide (St-g-PAM). The use of a controlled radical grafting technique is necessary, as compared to the traditional free-radical polymerization methods, in order to obtain a well-defined structure of the final product. This is in turn essential for studying the relationship between such structure and the end-properties. Waxy potato starch-based water-soluble macroinitiator was first synthesized by esterification with 2-bromopropionyl bromide in the mixture of dimethylacetamide and lithium chloride...
July 15, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29665744/expression-and-functions-of-formyl-peptide-receptor-1-in-drug-resistant-bladder-cancer
#6
Xue Jiang, Ting Lei, Man Zhang
OBJECTIVE: To explore the correlation of formyl peptide receptor 1 expression with drug resistance and the functions of formyl peptide receptor 1 in drug-resistant bladder cancer. METHODS: Expression of formyl peptide receptor 1 in T24 and T24/DDP cisplatin-resistant bladder cancer cell lines was tested by quantitative real-time Polymerase Chain Reaction and Western blotting. After incubation of T24/DDP with N-formyl-Met-Leu-Phe, the phosphor proteins were tested by Western blot analysis...
January 1, 2018: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/29658681/laparoscopic-radical-prostatectomy-in-2018-20-years-of-worldwide-experiences-experimentations-researches-and-refinements
#7
Aldo Brassetti, Renaud Bollens
INTRODUCTION: After the first feasibility report in 1997, a growing interest has risen in the urologic community for laparoscopic radical prostatectomy (LRP) and several authors have contributed to the evolution of the technique. We attempt a review of the available evidences and provide a broad framework of different technical refinements considering their impact on pentafecta. EVIDENCE ACQUISITION: The PubMed/Medline database was searched. Duplicates and "Expert opinion" papers were removed...
April 13, 2018: Minerva Chirurgica
https://www.readbyqxmd.com/read/29653110/sirna-mediated-lrp-lr-knock-down-reduces-cellular-viability-of-malignant-melanoma-cells-through-the-activation-of-apoptotic-caspases
#8
Thalia M Rebelo, Leila Vania, Eloise Ferreira, Stefan F T Weiss
The 37kDa/67kDa laminin receptor (LRP/LR) is over-expressed in tumour cells and has been implicated in several tumourigenic processes such as metastasis and telomerase activation, however, more importantly the focus of the present study is on the maintenance of cellular viability and the evasion of apoptosis. The aim of the study was to investigate the role of LRP/LR on the cellular viability of early (A375) and late stage (A375SM) malignant melanoma cells. Flow cytometry and western blot analysis revealed that A375SM cells contain more cell-surface and total LRP/LR levels in comparison to the A375 cells, respectively...
April 10, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29651375/codon-optimization-significantly-enhanced-the-expression-of-human-37-kda-ilrp-in-escherichia-coli
#9
Bainan Liu, Qianqian Kong, Dong Zhang, Lingli Yan
37-kDa immature laminin receptor protein (iLRP), the precursor of 67-kDa laminin receptor protein (LRP), is overexpressed on the surface of most cancer cells and recognized as a universal tumor antigen. The role makes it a potential target for cancer immunotherapy, which has been well-studied. Our study aimed to produce high quality of human iLRP in bacteria so that the needs in research of its clinical application could be met. The powerful system for heterologous protein expression, pET system was used. Two types of DNA sequences encoding the same amino acid sequences were separately cloned into the vector pET30a(+)...
April 2018: 3 Biotech
https://www.readbyqxmd.com/read/29625972/long-term-electroacupuncture-stimulation-prevents-osteoporosis-in-ovariectomised-osteopaenic-rats-through-multiple-signalling-pathways
#10
Xuefeng Zheng, Yan Nie, Chengtao Sun, Guangwen Wu, Qiaoyan Cai, Shu Huang, Yanping Lin
BACKGROUND: The pathogenic mechanisms of postmenopausal osteoporosis (PMOP) development are complex and are related to multiple cellular signalling transduction pathways. The aim of this study was to compare the effects of electroacupuncture (EA) at GV4/GV6 versus BL20/BL23 on the bones in ovariectomised (OVX) rats to explore the pathways that mediate the effects of EA on bone. METHODS: Forty female Sprague-Dawley rats were allocated to one of four groups (n=10 rats each) that received sham surgery (Sham group), OVX surgery only (OVX group), OVX surgery plus EA at GV4/GV6 (GV group) and OVX surgery plus EA at BL20/BL23 (BL group)...
April 6, 2018: Acupuncture in Medicine: Journal of the British Medical Acupuncture Society
https://www.readbyqxmd.com/read/29614686/the-effect-of-chronic-cerebral-hypoperfusion-on-amyloid-%C3%AE-metabolism-in-a-transgenic-mouse-model-of-alzheimer-s-disease-ps1v97l
#11
Heyun Yang, Tingting Hou, Wei Wang, Yumin Luo, Feng Yan, Jianping Jia
Alzheimer's disease (AD) and cerebrovascular disease often coexist. However, it is difficult to determine how chronic cerebral hypoperfusion affects the metabolism of amyloid-β peptides (Aβ) in a living patient with AD. Thus, we developed an animal model of this condition, using transgenic mice (PS1V97L) and right common carotid artery ligation to create chronic cerebral hypoperfusion. The metabolic processes associated with amyloid-β peptide (Aβ) were observed and evaluated in this PS1V97L plus hypoperfusion model...
2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29614096/abundance-diversity-and-domain-architecture-variability-in-prokaryotic-dna-binding-transcription-factors
#12
Ernesto Perez-Rueda, Rafael Hernandez-Guerrero, Mario Alberto Martinez-Nuñez, Dagoberto Armenta-Medina, Israel Sanchez, J Antonio Ibarra
Gene regulation at the transcriptional level is a central process in all organisms, and DNA-binding transcription factors, known as TFs, play a fundamental role. This class of proteins usually binds at specific DNA sequences, activating or repressing gene expression. In general, TFs are composed of two domains: the DNA-binding domain (DBD) and an extra domain, which in this work we have named "companion domain" (CD). This latter could be involved in one or more functions such as ligand binding, protein-protein interactions or even with enzymatic activity...
2018: PloS One
https://www.readbyqxmd.com/read/29605444/performance-characteristics-of-transrectal-shear-wave-elastography-swe-imaging-in-the-evaluation-of-clinically-localised-prostate-cancer-a-prospective-study
#13
Cheng Wei, Chunhui Li, Magdalena Szewczyk-Bieda, Dilip Upreti, Stephen Lang, Zhihong Huang, Ghulam Nabi
OBJECTIVE: To test the diagnostic accuracy of SWE for the detection and phenotypic characterisation of PCa compared with whole-mount radical prostatectomy histopathology. MATERIALS AND METHODS: This was a prospective protocol-driven diagnostic accuracy study. 212 consecutive men undergoing laparoscopic radical prostatectomy (LRP) for clinically localised PCa were recruited into the study. Quantitative stiffness data of the prostate gland was obtained in each patient using an endocavitary transrectal transducer before LRP and compared with detailed histopathological examination of radical prostatectomy specimen using 3-D printing mold based technology ensuring improved image-histology orientation...
March 29, 2018: Journal of Urology
https://www.readbyqxmd.com/read/29599839/rapamycin-protects-against-paraquat-induced-pulmonary-epithelial-mesenchymal-transition-via-the-wnt-%C3%AE-catenin-signaling-pathway
#14
Chanthasone Vongphouttha, Jie Zhu, Shuhao Deng, Wenlin Tai, Wenjuan Wu, Zhenkun Li, Wen Lei, Yin Wang, Zhaoxing Dong, Tao Zhang
Paraquat (PQ) is a herbicide that is widely used in developing countries, and pulmonary fibrosisis one of the most typical features of PQ poisoning. The molecular mechanism underlying PQ toxicity is largely unknown, which makes it difficult to treat. In the present study, western blot analysis, reverse transcription-quantitative polymerase chain reaction and fluorescent immunostaining were used to analyze the effects of rapamycin on PQ-induced epithelial-mesenchymal transition (EMT) in A549 and MRC-5 cells...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29582366/the-reversal-effect-of-ginsenoside-rh2-on-drug-resistance-in-human-colorectal-carcinoma-cells-and-its-mechanism
#15
Gui-Wei Liu, Yan-Hua Liu, Guo-Sheng Jiang, Wei-Dan Ren
Recent studies hint that Ginsenoside is involved in cancer prevention and treatment. In this study, we investigated the effect of Ginsenoside Rh2 on drug resistance in human colorectal carcinoma (CRC) cells and its mechanism. The resistance reversion effect of Ginsenoside Rh2 in CRC cells was analyzed using CCK-8 assay. After treating with Ginsenoside Rh2, the cell cycle distribution and cellular apoptosis were analyzed by flow cytometry, cell migration was determined by transwell migration assay, the expression of drug-resistance genes and proteins were evaluated using quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot, respectively...
March 26, 2018: Human Cell
https://www.readbyqxmd.com/read/29578530/the-lrp-of-mycobacterium-tuberculosis-regulates-the-innate-immune-response-of-macrophages
#16
Yuan Liu, Hong Cai
No abstract text is available yet for this article.
March 26, 2018: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/29562936/microbiome-host-systems-interactions-protective-effects-of-propionate-upon-the-blood-brain-barrier
#17
Lesley Hoyles, Tom Snelling, Umm-Kulthum Umlai, Jeremy K Nicholson, Simon R Carding, Robert C Glen, Simon McArthur
BACKGROUND: Gut microbiota composition and function are symbiotically linked with host health and altered in metabolic, inflammatory and neurodegenerative disorders. Three recognised mechanisms exist by which the microbiome influences the gut-brain axis: modification of autonomic/sensorimotor connections, immune activation, and neuroendocrine pathway regulation. We hypothesised interactions between circulating gut-derived microbial metabolites, and the blood-brain barrier (BBB) also contribute to the gut-brain axis...
March 21, 2018: Microbiome
https://www.readbyqxmd.com/read/29556189/royal-jelly-reduces-cholesterol-levels-ameliorates-a%C3%AE-pathology-and-enhances-neuronal-metabolic-activities-in-a-rabbit-model-of-alzheimer-s-disease
#18
Yongming Pan, Jianqin Xu, Cheng Chen, Fangming Chen, Ping Jin, Keyan Zhu, Chenyue W Hu, Mengmeng You, Minli Chen, Fuliang Hu
Alzheimer's disease (AD) is the most common form of dementia characterized by aggregation of amyloid β (Aβ) and neuronal loss. One of the risk factors for AD is high cholesterol levels, which are known to promote Aβ deposition. Previous studies have shown that royal jelly (RJ), a product of worker bees, has potential neuroprotective effects and can attenuate Aβ toxicity. However, little is known about how RJ regulates Aβ formation and its effects on cholesterol levels and neuronal metabolic activities...
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29553828/structural-features-of-an-acidic-polysaccharide-with-the-potential-of-promoting-osteoblast-differentiation-from-lycium-ruthenicum-murr
#19
Shu-Qi Wang, Bing Liu, Su Liu, Song-Zi Xie, Li-Hua Pan, Xue-Qiang Zha, Qiang-Ming Li, Jian-Ping Luo
The enhanced osteoblast differentiation is beneficial to the prevention of osteoporosis. In this study, a homogeneous polysaccharide (LRP-S2A) with the potential of promoting osteoblast differentiation was obtained from the fruits of Lycium ruthenicum, a traditional herb for treatment of postmenopausal metabolic disorders. Structural identification indicated that LRP-S2A, with a relative molecular weight of 2.65 × 106  Da and an uronic acid content of 41.8%, contained Rha, Ara, Gal, Glc and GlcA in a molar ratio of 1...
March 19, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29545551/non-invasive-detection-of-adeno-associated-viral-gene-transfer-using-a-genetically-encoded-cest-mri-reporter-gene-in-the-murine-heart
#20
Shelby Meier, Assaf A Gilad, J Anthony Brandon, Chenghao Qian, Erhe Gao, Jose F Abisambra, Moriel Vandsburger
Research into gene therapy for heart failure has gained renewed interest as a result of improved safety and availability of adeno-associated viral vectors (AAV). While magnetic resonance imaging (MRI) is standard for functional assessment of gene therapy outcomes, quantitation of gene transfer/expression relies upon tissue biopsy, fluorescence or nuclear imaging. Imaging of gene expression through the use of genetically encoded chemical exchange saturation transfer (CEST)-MRI reporter genes could be combined with clinical cardiac MRI methods to comprehensively probe therapeutic gene expression and subsequent outcomes...
March 15, 2018: Scientific Reports
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