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https://www.readbyqxmd.com/read/29161690/catechins-blunt-the-effects-of-oxldl-and-its-primary-metabolite-phosphatidylcholine-hydroperoxide-on-endothelial-dysfunction-through-inhibition-of-oxidative-stress-and-restoration-of-enos-in-rats
#1
Hao-Hsiang Chang, Chen-Yen Chien, Kuo-Hsin Chen, Shih-Chung Huang, Chiang-Ting Chien
BACKGROUND/AIMS: We explored the effects of catechins (decaffeinated green tea extracts containing (-)-epicatechin, (-)-epigallocatechin, (-)-epicatechin gallate and (-)-epigallocatechin gallate) on atherosclerosis risk factors, oxidized low-density lipoprotein (oxLDL) and its primary metabolite, phosphatidylcholine hydroperoxide (PCOOH) induced oxidative injury in cultured endothelial cell line and rats. METHODS: We used endothelial cell line and male Wistar rats to determine the effect of catechins on oxLDL or PCOOH induced oxidative injury including apoptosis, H2O2 level, vascular responses and urinary 8-isoprostane and nitrite/nitrate concentration...
November 22, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29161660/molecular-mechanisms-of-anti-inflammatory-effect-of-chrysophanol-an-active-component-of-ast2017-01-on-atopic-dermatitis-in-vitro-models
#2
Hyun-Ja Jeong, Hee-Yun Kim, Hyung-Min Kim
AST2017-01 mainly consists of Rumex crispus and -Cordyceps militaris and has been widely consumed as an herbal medicine or functional food in Korea. Here we investigated the influences of AST2017-01 and its active component, chrysophanol on human mast cell (HMC-1 cell) and human keratinocyte (HaCaT cell)-mediated inflammatory reactions. Pretreatment with AST2017-01 or chrysophanol suppressed intracellular calcium levels and histamine release in phorbol 12-myristate 13-acetate and calcium ionophore A23187 (PMACI)-treated HMC-1 cells...
November 18, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29161574/fast-spectroscopic-monitoring-of-inhibitors-in-the-2g-ethanol-process
#3
Ariane S S Pinto, Marcelo P A Ribeiro, Cristiane S Farinas
One of the main challenges of second generation (2G) ethanol production is the high quantities of phenolic compounds and furan derivatives generated in the pretreatment of the lignocellulosic biomass, which inhibit the enzymatic hydrolysis and fermentation steps. Fast monitoring of these inhibitory compounds could provide better control of the pretreatment, hydrolysis, and fermentation processes by enabling the implementation of strategic process control actions. We investigated the feasibility of monitoring these inhibitory compounds by ultraviolet-visible (UV-Vis) spectroscopy associated with partial least squares (PLS) regression...
November 14, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29161568/feasibility-of-high-concentration-cellulosic-bioethanol-production-from-undetoxified-whole-monterey-pine-slurry
#4
Chengyu Dong, Ying Wang, Han Zhang, Shao-Yuan Leu
The economic feasibility of high-concentration cellulosic bioethanol production remains challenging because it requires easily available feedstock and low energy consumption process. Simultaneous saccharification and fermentation (SSF) of sulfite pretreated Momentary pine slurry at 20% (w/w) loadings increased ethanol concentration from 59.3 g/L to 68.5 g/L by washing strategy. Effects of inhibitors in pretreatment liquor were further investigated. Besides HMF, furfural and acetic acid, other inhibitors and/or their synergistic effects proved to be responsible for a lower fermentability...
November 11, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29161525/sea-cucumber-lipid-soluble-extra-fraction-prevents-ovalbumin-induced-allergic-airway-inflammation
#5
Da-In Lee, Shin Ae Kang, Anisuzzaman Md, U-Cheol Jeong, Feng Jin, Seok-Joong Kang, Jeong-Yeol Lee, Hak Sun Yu
In a previous study, our research group demonstrated that sea cucumber (Apostichopus japonicus) extracts ameliorated allergic airway inflammation through CD4(+)CD25(+)Foxp3(+) T (regulatory T; Treg) cell activation and recruitment to the lung. In this study, we aimed to determine which components of sea cucumber contribute to the amelioration of airway inflammation. We used n-hexane fractionation to separate sea cucumber into three phases (n-hexane, alcohol, and solid) and evaluated the ability of each phase to elevate Il10 expression in splenocytes and ameliorate symptoms in mice with ovalbumin (OVA)/alum-induced asthma...
November 21, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29161204/effect-of-neoadjuvant-chemoradiotherapy-on-health-related-quality-of-life-in-esophageal-or-junctional-cancer-results-from-the-randomized-cross-trial
#6
Bo Jan Noordman, Mathilde G E Verdam, Sjoerd M Lagarde, Maarten C C M Hulshof, Pieter van Hagen, Mark I van Berge Henegouwen, Bas P L Wijnhoven, Hanneke W M van Laarhoven, Grard A P Nieuwenhuijzen, Geke A P Hospers, Johannes J Bonenkamp, Miguel A Cuesta, Reinoud J B Blaisse, Olivier R Busch, Fiebo J W Ten Kate, Geert-Jan M Creemers, Cornelis J A Punt, John Th M Plukker, Henk M W Verheul, Ernst J Spillenaar Bilgen, Herman van Dekken, Maurice J C van der Sangen, Tom Rozema, Katharina Biermann, Jannet C Beukema, Anna H M Piet, Caroline M van Rij, Janny G Reinders, Hugo W Tilanus, Ewout W Steyerberg, Ate van der Gaast, Mirjam A G Sprangers, J Jan B van Lanschot
Purpose To compare pre-agreed health-related quality of life (HRQOL) domains in patients with esophageal or junctional cancer who received neoadjuvant chemoradiotherapy (nCRT) followed by surgery or surgery alone. Secondary aims were to examine the effect of nCRT on HRQOL before surgery and the effect of surgery on HRQOL. Patients and Methods Patients were randomly assigned to nCRT (carboplatin plus paclitaxel with concurrent 41.4-Gy radiotherapy) followed by surgery or surgery alone. HRQOL was measured using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (QLQ-C30) and -Oesophageal Cancer Module (QLQ-OES24) questionnaires pretreatment and at 3, 6, 9, and 12 months postoperatively...
November 21, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29161009/a-sensitive-microbead-based-organic-media-assisted-method-for-proteomics-sample-preparation-from-dilute-and-denaturing-solutions
#7
Masato Taoka, Michihiko Fujii, Masahiro Tsuchiya, Takamasa Uekita, Tohru Ichimura
We developed a robust and sensitive sample preparation method for proteomics termed microbead-based and organic-media-assisted proteolysis strategy (BOPs). BOPs combine two advantages of current techniques, (1) unbiased binding of reversed-phase polymeric microbeads to any type of protein and (2) enhanced trypsin digestion efficiency in CH3CN-aqueous solvent systems, into a single-tube workflow. Compared with conventional techniques, this method effectively concentrates proteins and improves proteolytic digestion, and can be used with submicromolar protein samples in dilute and/or denaturing solutions such as 70 % formic acid, 8 M urea, or 7 M guanidine hydrochloride without any sample pretreatment...
November 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29160824/microneedle-assisted-percutaneous-delivery-of-a-tetramethylpyrazine-loaded-microemulsion
#8
Qiang Zu, Yanyan Yu, Xiaolin Bi, Ren Zhang, Liuqing Di
This study examined the efficacy of the percutaneous delivery of a tetramethylpyrazine-loaded microemulsion (TMP-ME) on skin pretreated with microneedles (MN). The TMP-ME formulation was optimized in vitro with skin permeation experiments, using a uniform experimental design, guided by a pseudo-ternary phase diagram, in which the TMP skin permeation level and mean particle size were indices. The effects of MN pretreatment on skin permeation by TMP-ME were assessed using in vitro skin permeation, in vivo skin microdialysis, and pharmacokinetic studies in rats...
November 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29160747/lipopolysaccharide-mediates-hepatic-stellate-cell-activation-by-regulating-autophagy-and-retinoic-acid-signaling
#9
Ming Chen, Jiaxing Liu, Wenqi Yang, Wenhua Ling
Bacterial translocation and lipopolysaccharide (LPS) leakage occur at a very early stage of liver fibrosis in animal models. We studied the role of LPS in hepatic stellate cell (HSC) activation and the underlying mechanisms in vitro and in vivo. Herein, we demonstrated that LPS treatment led to a dramatic increase in autophagosome formation and autophagic flux in LX-2 cells and HSCs, which was mediated through the AKT-MTOR and AMPK-ULK1 pathway. LPS significantly decreased the lipid content, including the lipid droplet (LD) number and lipid staining area in HSCs; pretreatment with macroautophagy/autophagy inhibitors or silencing ATG5 attenuated this decrease...
November 21, 2017: Autophagy
https://www.readbyqxmd.com/read/29160420/next-generation-sequencing-based-genomic-profiling-fostering-innovation-in-cancer-care
#10
Gustavo S Fernandes, Daniel F Marques, Daniel M Girardi, Maria Ignez F Braghiroli, Renata A Coudry, Sibele I Meireles, Artur Katz, Paulo M Hoff
OBJECTIVES: With the development of next-generation sequencing (NGS) technologies, DNA sequencing has been increasingly utilized in clinical practice. Our goal was to investigate the impact of genomic evaluation on treatment decisions for heavily pretreated patients with metastatic cancer. METHODS: We analyzed metastatic cancer patients from a single institution whose cancers had progressed after all available standard-of-care therapies and whose tumors underwent next-generation sequencing analysis...
October 2017: Clinics
https://www.readbyqxmd.com/read/29160373/the-role-of-histone-deacetylase-inhibitors-in-regulation-of-akt-gsk-3%C3%AE-signaling-pathway-in-mice-following-transient-focal-cerebral-ischemia
#11
Bo Zhao, Lian Liu, Yan Leng, Quan Yuan, Jiabao Hou, Yang Wu, Wenwei Gao
PURPOSE: To investigate whether the neuroprotective effect of TSA on cerebral ischemia reperfusion injury is mediated by the activation of Akt/GSK-3β signaling pathway. METHODS: Mice were randomly divided into four groups (n=15): sham group (S); ischemia reperfusion group (IR); ischemia reperfusion and pretreated with TSA group (IR+T); ischemia reperfusion and pretreated with TSA and LY294002 group (IR+T+L). The model of cerebral ischemia reperfusion was established by 1h of MCAO following 24h of reperfusion...
October 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/29159902/histamine-enhanced-contractile-responses-of-gastric-smooth-muscle-via-interstitial-cells-of-cajal-in-the-syrian-hamster
#12
S Naganuma, T Shiina, S Yasuda, Y Suzuki, Y Shimizu
BACKGROUND: Gastric motility is controlled by the autonomic and enteric nervous systems and by interstitial cells of Cajal (ICCs). Although histamine is known to be released from enterochromaffin-like cells in the gastric mucosa, its regulatory roles in gastric motility are still controversial. Therefore, we investigated the functional roles of histamine in gastric motility. METHODS: Stomach preparations from hamsters were used because the stomach of hamsters can be easily separated into the forestomach and the glandular stomach...
November 21, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29159791/determining-personalized-treatment-by-gene-expression-profiling-in-metastatic-breast-carcinoma-patients-a-pilot-study
#13
M Sureda, J Rebollo, E Mª Martínez-Navarro, F J Fernández-Morejón, J Farré, V Muñoz, P Bretcha-Boix, M Duarte, R G Manzano, A Crespo, M Del Carmen Redal, B Valenzuela, A Brugarolas
PURPOSE: The present study evaluates the massive study of gene expression in metastatic breast carcinoma (MBC) patients using microarray gene expression profiling (MAGE) complemented with conventional sequencing, immunohistochemistry (IHC) and fluorescent "in situ" hybridization (FISH), seeking to optimize the treatment in a subset of heavily pretreated patients and with limited life expectancy. PATIENTS, MATERIAL AND METHODS: MBC patients in hormone therapy progression with survival expectancy of at least 3 months (m) have been included...
November 20, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/29159498/pooled-analysis-of-the-reports-of-carfilzomib-ixazomib-combinations-for-relapsed-refractory-multiple-myeloma
#14
Wenjun Xu, Xuedong Sun, Baohong Wang, Hui Guo
We sought to evaluate the activity and safety of carfilzomib-/ixazomib-containing combinations for patients with relapsed/refractory multiple myeloma (RRMM). We searched published reports including carfilzomib-/ixazomib-containing combinations for RRMM. Finally, we identified 11 prospective studies covering 2845 relapsed/refractory patients. Carfilzomib- and ixazomib-containing combinations respectively resulted in an impressive overall response rate (ORR 77 vs. 64%, P = 0.14), very good partial response or better (≥ VGPR 48 vs...
November 20, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/29158883/the-role-of-protein-kinase-b-signaling-pathway-in-anti-cancer-effect-of-rolipram-on-glioblastoma-multiforme-an-in-vitro-study
#15
Sara Ramezani, Mahmoudreza Hadjighassem, Nasim Vousooghi, Mansour Parvaresh, Farshid Arbabi, Naser Amini, Mohammad Taghi Joghataei
Introduction: The mechanism of putative cytotoxicity of 4-[3-(cyclopentyloxy)-4-methoxyphenyl]-2-pyrrolidone (rolipram), a specific phosphodiesterase-4 (PDE4) inhibitor, on glioblastoma multiforme (GBM) is almost unknown. This study aimed to investigate the role of protein kinase B (Akt) pathway in the cytotoxic effect of rolipram on human GBM U87 MG cell line and Tumor-Initiating Cells (TICs) isolated from patient's GBM specimen. Methods: TICs were characterized by using flow cytometry and quantitative real-time PCR...
July 2017: Basic and Clinical Neuroscience
https://www.readbyqxmd.com/read/29158577/vgf-function-in-depression-and-antidepressant-efficacy
#16
C Jiang, W-J Lin, M Sadahiro, B Labonté, C Menard, M L Pfau, C A Tamminga, G Turecki, E J Nestler, S J Russo, S R Salton
Brain-derived neurotrophic factor (BDNF) is a critical effector of depression-like behaviors and antidepressant responses. Here, we show that VGF (non-acronymic), which is robustly regulated by BDNF/TrkB signaling, is downregulated in hippocampus (male/female) and upregulated in nucleus accumbens (NAc) (male) in depressed human subjects and in mice subjected to chronic social defeat stress (CSDS). Adeno-associated virus (AAV)-Cre-mediated Vgf ablation in floxed VGF mice, in dorsal hippocampus (dHc) or NAc, led to pro-depressant or antidepressant behaviors, respectively, while dHc- or NAc-AAV-VGF overexpression induced opposite outcomes...
November 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/29158525/photoacoustic-stimulation-promotes-the-osteogenic-differentiation-of-bone-mesenchymal-stem-cells-to-enhance-the-repair-of-bone-defect
#17
Zebin Huang, Jiankun Xu, Jiebin Chen, Hongjiang Chen, Hailong Wang, Zhonglian Huang, Youbin Chen, Xiaolin Lu, Fushen Lu, Jun Hu
The aim of this study was to evaluate the direct photoacoustic (PA) effect on bone marrow mesenchymal stem cells (BMSCs) which is a key cell source for osteogenesis. As scaffold is also an indispensable element for tissue regeneration, here we firstly fabricated a composited sheet using polylactic-co-glycolic acid (PLGA) mixing with graphene oxide (GO). BMSCs were seeded on the PLGA-GO sheets and received PA treatment in vitro for 3, 9 and 15 days, respectively. Then the BMSCs were harvested and subjected to assess alkaline phosphatase (ALP) activity, calcium content and osteopontin (OPN) on 3, 9 and 15 days...
November 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29158267/methamphetamine-increases-hiv-infectivity-in-neural-progenitor-cells
#18
Marta Skowronska, Marisa McDonald, Martina Velichkovska, Ana Rachel Leda, Minseon Park, Michal Toborek
HIV-1 infection and methamphetamine (METH) abuse frequently occur simultaneously and may have synergistic pathological effects. Although HIV-positive/active METH users have been shown to have higher HIV viral loads and experience more severe neurological complications than non-users, the direct impact of METH on HIV infection and its link to the development of neurocognitive alternations are still poorly understood. In the present study, we hypothesized that METH impacts HIV infection of neural progenitor cells (NPC) by a mechanism encompassing NFκB/SP1-mediated HIV-LTR activation...
November 20, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29158167/clc-3-chloride-channel-is-involved-in-isoprenaline-induced-cardiac-hypertrophy
#19
Chunmei Li, Dan Huang, Jing Tang, Mengqing Chen, Qun Lu, He Li, Mengzhen Zhang, Bin Xu, Jianwen Mao
Isoprenaline, an activator of β-adrenergic receptor, has been found to induce cardiac hypertrophy in vivo and in vitro, but the exact mechanism is still unclear. ClC-3 is a member of the chloride channel family and is highly expressed in mammalian myocardium. In the present study, the role of ClC-3 in isopronaline-induced cardiac hypertrophy was investigated. We found that ClC-3 expression was reduced in isoprenaline-induced hypertrophic H9c2 cells, primary rat neonatal cardiomyocytes and myocardium of C57/BL/6 mice, and this reduction was prevented by the pretreatment of propranolol...
November 17, 2017: Gene
https://www.readbyqxmd.com/read/29157829/sulfated-galactans-from-the-red-seaweed-gracilaria-fisheri-exerts-anti-migration-effect-on-cholangiocarcinoma-cells
#20
Thannicha Sae-Lao, Natthanej Luplertlop, Tavan Janvilisri, Rutaiwan Tohtong, David O Bates, Kanokpan Wongprasert
BACKGROUND: Seaweeds have a long history of use in Asian countries as functional foods, medicinal herbs, and the treatment of cancer. Polysaccharides from various seaweeds have shown anti-tumor activity. Cholangiocarcinoma (CCA), often with metastatic disease, is highly prevalent in Thailand as a consequence of liver fluke infection. Recently, we extracted sulfated galactans (SG) from Gracilaria fisheri (G. fisheri), a south east Asian seaweed, and found it exhibited anti-proliferation effect on CCA cells...
December 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
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