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https://www.readbyqxmd.com/read/28724269/association-of-human-methionine-synthase-a2756g-transition-with-prostate-cancer-a-case-control-study-and-in-silico-analysis
#1
Arezou Ebrahimi, Abasalt Hosseinzadeh Colagar, Mohammad Karimian
Methionine synthase (MTR) is one of the key enzymes of folate pathway, which play a key role in the construction, repair, and methylation of DNA. In this study, an association of MTR A2756G gene transition with prostate cancer in men populations of Kashan-Iran was investigated by a case-control study and an in silico analysis. The 200 samples including 100 patients with prostate cancer, as case group and 100 healthy men, as control group included in this study. MTR-A2756G genotyping was performed by PCR-RFLP technique...
May 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28723708/subclinical-herpesvirus-shedding-among-hiv-1-infected-men-on-antiretroviral-therapy
#2
Arcadio Agudelo-Hernandez, Yue Chen, Arlene Bullotta, William G Buchanan, Cynthia R Klamar-Blain, Luann Borowski, Sharon A Riddler, Charles R Rinaldo, Bernard Jc Macatangay
DESIGN: We evaluated the subclinical shedding of 6 different herpesviruses in antiretroviral drug-treated HIV(+) men who have sex with men (MSM), and determined how this is associated with markers of inflammation and immune activation. METHODS: We obtained blood, semen, throat washing, urine, and stool from 15 antiretroviral-treated HIV-1-infected MSM with CD4 T cell reconstitution, and 12 age-matched HIV(-) MSM from the Multicenter AIDS Cohort Study at 4 timepoints over 24 weeks to measure DNA levels of cytomegalovirus (CMV), Epstein-Barr virus (EBV), herpes simplex virus 1 and 2, human herpesvirus 6 (HHV6), and HHV8...
July 18, 2017: AIDS
https://www.readbyqxmd.com/read/28723625/2-acetylamino-3-4-2-acetylamino-2-carboxyethylsulfanylcarbonylamino-phenyl-carbamoylsulfanyl-propionic-acid-a-glutathione-reductase-inhibitor-induces-g2-m-cell-cycle-arrest-through-generation-of-thiol-oxidative-stress-in-human-esophageal-cancer-cells
#3
Xia Li, Zhiming Jiang, Jianguo Feng, Xiaoying Zhang, Junzhou Wu, Wei Chen
Esophageal squamous cell carcinoma (ESCC) is a highly malignant cancer with poor response to both of chemotherapy and radiotherapy. 2-Acetylamino-3-[4-(2-acetylamino-2-carboxyethylsulfanylcarbonylamino) phenyl carbamoylsulfanyl] propionic acid (2-AAPA), an irreversible inhibitor of glutathione reductase (GR), is able to induce intracellular oxidative stress, and has shown anticancer activity in many cancer cell lines. In this study, we investigated the effects of 2-AAPA on the cell proliferation, cell cycle and apoptosis and aimed to explore its mechanism of action in human esophageal cancer TE-13 cells...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28723216/lycopene-inhibits-human-liver-adenocarcinoma-sk-hep-1-cells-metastasis-by-down-regulation-of-nadph-oxidase-4-protein-expression
#4
Bo-Yi Jhou, Tuzz-Ying Song, Inn Lee, Miao-Lin Hu, Nae-Cherng Yang
NADPH oxidase 4 (NOX4) with the sole function to produce reactive oxygen species (ROS) can be a molecular target to disrupt cancer metastasis. Several studies have indicated that lycopene exhibited anti-metastatic actions in vitro and in vivo. However, the role of NOX4 in the anti-metastatic action of lycopene remains unknown. Herein, we first confirmed the anti-metastatic effect of lycopene (0.1-5 μM) on human liver adenocarcinoma SK-Hep-1 cells. We showed that lycopene significantly inhibited NOX4 protein expression with the highest inhibition of 64...
July 19, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28722797/highly-selective-enrichment-of-phosphopeptides-by-on-chip-indium-oxide-functionalized-magnetic-nanoparticles-coupled-with-maldi-tof-ms
#5
Dandan Jiang, Naizhong Song, Xiqian Li, Jiutong Ma, Qiong Jia
Selective and efficient preconcentration is indispensable for low concentration of phosphopeptides in phosphorylated protein-related samples prior to MS-based analysis. Herein, an on-chip system coupled magnetic SPE with MALDI-TOF MS was designed. A metal oxide affinity chromatography (MOAC) material, indium oxide, was coated on the surface of Fe3 O4 magnetic nanoparticles (MNPs) to prepare the adsorbent, spatially confined with an applied magnetic field. The adsorbent exhibited high selectivity for phosphopeptides in tryptic digests of the mixture of β-casein and BSA (1:1000) and the mixture of β-casein, BSA, and ovalbumin (1:100:100)...
July 19, 2017: Proteomics
https://www.readbyqxmd.com/read/28722356/hansen-solubility-parameters-for-assay-method-optimization-of-simvastatin-ramipril-atenolol-hydrochlorothiazide-and-aspirin-in-human-plasma-using-liquid-chromatography-with-tandem-mass-spectrometry
#6
Murali Mohan Reddy Devalapalli, Hanumanth Srikanth Cheruvu, Thejaswi Yertha, Vijaya Bhaskar Veeravalli, Sunitha Sampathi, Savithri Shivakumar
A simple, specific, sensitive validated method was developed using liquid chromatography with tandem mass spectrometry with electrospray ionization of human plasma for the simultaneous estimation of drugs (simvastatin, ramipril, atenolol, hydrochlorothiazide and aspirin) of Polycap(TM) capsule used in cardiovascular therapy. The interaction of these actives including internal standards between the stationary and mobile phase were investigated using Hansen solubility parameters. Chromatographic separation was performed on Phenomenex Synergi Polar-RP (30 × 2 mm, 4 μm) column with a gradient mobile phase composition of acetonitrile and 5 mM ammonium formate for positive mode and 0...
July 19, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28722118/at2-r-deficiency-mediated-podocyte-loss-via-activation-of-ectopic-hedgehog-interacting-protein-hhip-gene-expression
#7
Min-Chun Liao, Xin-Ping Zhao, Shiao-Ying Chang, Chao-Sheng Lo, Isabelle Chenier, Tomoko Takano, Julie R Ingelfinger, Shao-Ling Zhang
Angiotensin II type 2 receptor (AT2 R) deficiency in AT2 R knockout (KO) mice has been linked to congenital abnormalities of the kidney and urinary tract; however, the mechanisms by which this occurs are poorly understood. In this study, we examined whether AT2 R deficiency impaired glomerulogenesis and mediated podocyte loss/dysfunction in vivo and in vitro. Nephrin-cyan fluorescent protein (CFP)-transgenic (Tg) and Nephrin/AT2 RKO mice were used to assess glomerulogenesis, while wild-type and AT2 RKO mice were used to evaluate maturation of podocyte morphology/function...
July 19, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28722007/physical-properties-of-the-hiv-1-capsid-from-all-atom-molecular-dynamics-simulations
#8
Juan R Perilla, Klaus Schulten
Human immunodeficiency virus type 1 (HIV-1) infection is highly dependent on its capsid. The capsid is a large container, made of ∼1,300 proteins with altogether 4 million atoms. Although the capsid proteins are all identical, they nevertheless arrange themselves into a largely asymmetric structure made of hexamers and pentamers. The large number of degrees of freedom and lack of symmetry pose a challenge to studying the chemical details of the HIV capsid. Simulations of over 64 million atoms for over 1 μs allow us to conduct a comprehensive study of the chemical-physical properties of an empty HIV-1 capsid, including its electrostatics, vibrational and acoustic properties, and the effects of solvent (ions and water) on the capsid...
July 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28721806/l-tetrahydropalmatine-induces-apoptosis-in-eu-4-leukemia-cells-by-down-regulating-x-linked-inhibitor-of-apoptosis-protein-and-increases-the-sensitivity-towards-doxorubicin
#9
S Li, D Chen, Renzhi Pei, Y Lu, P Zhang, J Ma, X Liu, X Du, K Sha, L Chen, J Cao, X Zhuang, J Wu, L Li, Z Fan, P Ye, S Tang, B Zhang, X Shi, K Li
BACKGROUND: L-Tetrahydropalmatine (L-THP) is a tetra-hydro protoberberine isoquinoline alkaloid. The phyto-compounds bearing isoquinoline alkaloids have been reported to show a potential effect against a number of human cancers cell lines including leukemia. We hypothesized that L-THP, being an isoquinoline alkaloid, could be a potential molecule against acute lymphoblastic leukemia (ALL), in this study, we evaluate L-THP against p53 deficient leukemia EU-4 cell lines in vitro. METHODS: For the study, p53 null leukemia EU-4 cells were used and treated with L-THP...
July 18, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28721631/1-trichloromethyl-1-2-3-4-tetrahydro-beta-carboline-taclo-alters-cell-cycle-progression-in-human-neuroblastoma-cell-lines
#10
Rakesh Kumar Sharma, Eduardo Candelario-Jalil, Doris Feineis, Gerhard Bringmann, Bernd L Fiebich, Ravi Shankar Akundi
1-Trichloromethyl-1,2,3,4-tetrahydro-β-carboline, abbreviated as TaClo, is an endogenous neurotoxin capable of formation in the brain through the condensation of neuronal tryptamine with ingested exogenous toxins such as trichloroethylene or chloral hydrate. Due to its structural resemblance to 1-methyl-4-phenyl-1,2,5,6-tetrahydropyridine (MPTP), and similar ability to inhibit mitochondrial complex I, TaClo has been implicated in the etiology of Parkinson's disease. Previous studies have shown the cytotoxicity of TaClo in various cell culture models...
July 18, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28721035/intracellular-interactions-of-umeclidinium-and-vilanterol-in-human-airway-smooth-muscle
#11
Nooreen Shaikh, Malcolm Johnson, David A Hall, Kian Fan Chung, John H Riley, Sally Worsley, Pankaj K Bhavsar
BACKGROUND: Intracellular mechanisms of action of umeclidinium (UMEC), a long-acting muscarinic receptor antagonist, and vilanterol (VI), a long-acting β2-adrenoceptor (β2R) agonist, were investigated in target cells: human airway smooth-muscle cells (ASMCs). MATERIALS AND METHODS: ASMCs from tracheas of healthy lung-transplant donors were treated with VI, UMEC, UMEC and VI combined, or control compounds (salmeterol, propranolol, ICI 118.551, or methacholine [MCh])...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28721010/antiglioma-effects-of-cytarabine-on-leptomeningeal-metastasis-of-high-grade-glioma-by-targeting-the-pi3k-akt-mtor-pathway
#12
Kai-Hong Zhao, Can Zhang, Yue Bai, Yan Li, Xun Kang, Jian-Xin Chen, Kun Yao, Tao Jiang, Xiao-Song Zhong, Wen-Bin Li
Leptomeningeal metastasis (LM) of high-grade glioma is a highly lethal disease requiring new effective therapeutic measures. For both de novo or relapsed glioma with LM, intrathecal cytarabine chemotherapy is not frequently used for first-line and relapse protocols. We encountered a clinical case demonstrating effective application of cytarabine in high-grade glioma with LM, prompting us to explore the effects of cytarabine on malignant glioma and molecular mechanisms of such effects through in vivo and in vitro experiments...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28720775/metformin-ameliorates-the-phenotype-transition-of-peritoneal-mesothelial-cells-and-peritoneal-fibrosis-via-a-modulation-of-oxidative-stress
#13
Hyun-Soo Shin, Jiyeon Ko, Dal-Ah Kim, Eun-Sun Ryu, Hye-Myung Ryu, Sun-Hee Park, Yong-Lim Kim, Eok-Soo Oh, Duk-Hee Kang
Phenotype transition of peritoneum is an early mechanism of peritoneal fibrosis. Metformin, 5'-adenosine monophosphate-activated protein kinase (AMPK) activator, has recently received a new attention due to its preventive effect on organ fibrosis and cancer metastasis by inhibiting epithelial-to-mesenchymal transition (EMT). We investigated the effect of metformin on EMT of human peritoneal mesothelial cells (HPMC) and animal model of peritoneal dialysis (PD). TGF-β1-induced EMT in HPMC was ameliorated by metformin...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720530/downregulation-of-protein-phosphatase-2a-by-apolipoprotein-e-implications-for-alzheimer-s-disease
#14
Veena Theendakara, Dale E Bredesen, Rammohan V Rao
The apolipoprotein E ε4 allele is the single most important genetic risk factor associated with Alzheimer's disease (AD). Tau phosphorylation and hyperphosphorylation is an underlying feature of AD and is regulated by specific kinases and phosphatases. Among phosphatases, protein phosphatase 2A (PP2A) is the principal tau dephosphorylating enzyme in the brain. Several abnormalities of PP2A have been reported in AD, including among others decreased protein levels of PP2A, decreased mRNA and protein levels of the catalytic subunit PP2AC and variable regulatory B subunits and reduced methylation of the catalytic subunit, all of which results in disruption of the PP2A phosphatase activity...
July 15, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/28720068/inhibitory-effect-of-par-4-combined-with-cisplatin-on-human-wilms-tumor-cells
#15
Jun Wang, Yunjie Li, Fangfang Ma, Huifeng Zhou, Rong Ding, Binbin Lu, Li Zou, Junxia Li, Rugang Lu
Wilms' tumor is associated with a high treatment success rate, but there is still a risk of recurrence. Cisplatin, which is one of the chemotherapeutic agents used for its treatment, is associated with a very high rate of resistance. Par-4 (prostate apoptosis response 4) is a tumor suppressor, which is capable of sensitizing tumor cells to chemotherapy. Therefore, the aim of this study was to determine whether combined treatment with Par-4 and cisplatin is effective for inhibiting growth of Wilms' tumor. Wilms' tumor and control cell samples were collected and analyzed by immunofluorescence assay and immunohistochemistry...
July 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28720058/long-form-of-thymic-stromal-lymphopoietin-of-keratinocytes-is-induced-by-protein-allergens
#16
Yasutaka Kuroda, Takuo Yuki, Yutaka Takahashi, Hitoshi Sakaguchi, Kayoko Matsunaga, Hiroshi Itagaki
A growing body of evidence suggests that epicutaneous sensitization of protein allergens induces immediate-type hypersensitivity (IHS) following induction of Type 2 immune responses in animals and humans. Thymic stromal lymphopoietin (TSLP) derived from keratinocytes is a cytokine that can activate dendritic cells and has been implicated in development of inflammatory Type 2 helper T-cells. However, there is no direct evidence that allergens directly regulate TSLP expression in keratinocytes. This study aimed to evaluate the response of TSLP to protein allergens in cultured human keratinocytes and to identify appropriate endpoints for IHS...
December 2017: Journal of Immunotoxicology
https://www.readbyqxmd.com/read/28719725/effects-of-eupatilin-on-the-contractility-of-corpus-cavernosal-smooth-muscle-through-nitric-oxide-independent-pathways
#17
S H Choo, S W Lee, M R Chae, S J Kang, H H Sung, D H Han, J N Chun, J K Park, C Y Kim, H K Kim, I So
Eupatilin (5,7-dihydroxy-3,4,6-trimethoxyflavone) is one of the main compounds present in Artemisia species. Eupatilin has both antioxidative and anti-inflammatory properties and a relaxation effect on vascular contraction regardless of endothelial function. We evaluated the relaxant effects of eupatilin on the corpus cavernosum (CC) of rabbits and the underlying mechanisms of its activity in human corpus cavernosum smooth muscle (CCSM) cells. Isolated rabbit CC strips were mounted in an organ bath system. A conventional whole-cell patch clamp technique was used to measure activation of calcium-sensitive K(+) -channel currents in human CCSM cells...
July 18, 2017: Andrology
https://www.readbyqxmd.com/read/28719640/short-lived-long-non-coding-rnas-as-surrogate-indicators-for-chemical-exposure-and-linc00152-and-malat1-modulate-their-neighboring-genes
#18
Hidenori Tani, Sayaka Okuda, Kaoru Nakamura, Motohide Aoki, Tomonari Umemura
Whole transcriptome analyses have revealed a large number of novel long non-coding RNAs (lncRNAs). Although accumulating evidence demonstrates that lncRNAs play important roles in regulating gene expression, the detailed mechanisms of action of most lncRNAs remain unclear. We previously reported that a novel class of lncRNAs with a short half-life (t1/2 < 4 h) in HeLa cells, termed short-lived non-coding transcripts (SLiTs), are closely associated with physiological and pathological functions. In this study, we focused on 26 SLiTs and nuclear-enriched abundant lncRNA, MALAT1(t1/2 of 7...
2017: PloS One
https://www.readbyqxmd.com/read/28719380/comparison-of-different-antibody-clones-for-immunohistochemistry-detection-of-programmed-cell-death-ligand-1-pd-l1-on-non-small-cell-lung-carcinoma
#19
Edwin R Parra, Pamela Villalobos, Barbara Mino, Jaime Rodriguez-Canales
Programmed cell death ligand 1 (PD-L1) is a major immune checkpoint protein that mediates antitumor immune suppression and response. Preliminary data suggest that its detection using immunohistochemistry (IHC) in formalin-fixed and paraffin-embedded tissues may predict clinical response to PD-1/PD-L1 therapy. In diagnostic pathology, it is essential to count with a validated IHC that can reliably detect PD-L1-positive cases. The present study was conducted to compare and validate different PD-L1 commercial clones and identify which ones can be reliably used by surgical pathologist to detect PD-L1 expression in human cancer tissues...
July 17, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28719288/evaluation-of-the-protective-effect-of-deoxyribonucleic-acid-vaccines-encoding-granule-antigen-2-and-5-against-acute-toxoplasmosis-in-balb-c-mice
#20
Xiao Teng Ching, Mun Yik Fong, Yee Ling Lau
AbstractToxoplasma gondii infects a broad range of warm-blooded hosts, including humans. Important clinical manifestations include encephalitis in immunocompromised patients as well as miscarriage and fetal damage during early pregnancy. Toxoplasma gondii dense granule antigen 2 and 5 (GRA2 and GRA5) are essential for parasitophorous vacuole development of the parasite. To evaluate the potential of GRA2 and GRA5 as recombinant DNA vaccine candidates, these antigens were cloned into eukaryotic expression vector (pcDNA 3...
June 2017: American Journal of Tropical Medicine and Hygiene
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