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https://www.readbyqxmd.com/read/28454453/targeting-assay-of-a-fusion-protein-applied-in-enzyme-prodrug-therapy
#1
Hao Wang, Jin-Jian Liu, Xiao-Liang Zhou
Tumor growth and metastasis are dependent on angiogenesis. The overexpression of integrin αvβ3 on angiogenic vessels and on numerous malignant human tumor cells suggests that these labeled ligands of integrin are potentially suitable for molecular imaging and in targeted therapy of tumors. In previous studies, we added a β-lactamase variant with reduced immunogenicity to the cyclic peptide RGD4C, resulting in the fusion protein RGD4CβL, which is suitable for use in targeted enzyme prodrug therapy (TEPT), a promising treatment for tumors...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454415/stat3-activation-and-risk-of-recurrence-in-meningiomas
#2
Mahlon Johnson, Mary O'Connell, Kevin Walter
Several studies have suggested that activation of signal transducer and activator of transcription 3 (STAT3) is associated with initiation, progression and metastasis of numerous types of malignancy. However, the role of the Janus kinase-interleukin 6-STAT3 signaling pathway in the pathogenesis and recurrence of meningiomas is unknown. The present study evaluated STAT3 activation by western blotting and immunohistochemistry and assessed its association with Ki-67 labeling in 13 cases of meningioma in which frozen tissue and ≥5...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454269/bone-marrow-derived-dendritic-cells-under-influence-of-experimental-breast-cancer-and-physical-activity
#3
Douglas R Abdalla, Bruno B M Gomes, Eddie F C Murta, Márcia A Michelin
Immune cells are required in the immune response against tumours, although sometimes without success. The present study aimed to investigate dendritic cell (DC) maturation in animals with induced immunosuppression that were subjected to physical activity (PA). Immunosuppression was induced using 7,12-dimethyl-benzanthracene (DMBA). A total of 56 Balb/c mice were divided into four groups, including the control group, non-DMBA administered/PA group (GII), DMBA administered/non-PA group (GIII) and the DMBA administered/PA group (GIV)...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454189/assessment-of-the-authenticity-of-herbal-dietary-supplements-comparison-of-chemical-and-dna-barcoding-methods
#4
Rahul S Pawar, Sara M Handy, Raymond Cheng, Nicole Shyong, Erich Grundel
About 7 % of the U. S. population reports using botanical dietary supplements. Increased use of such supplements has led to discussions related to their authenticity and quality. Reports of adulteration with substandard materials or pharmaceuticals are of concern because such substitutions, whether inadvertent or deliberate, may reduce the efficacy of specific botanicals or lead to adverse events. Methods for verifying the identity of botanicals include macroscopic and microscopic examinations, chemical analysis, and DNA-based methods including DNA barcoding...
April 28, 2017: Planta Medica
https://www.readbyqxmd.com/read/28454103/subchronic-arsenism-induced-oxidative-stress-and-inflammatory-contribute-to-apoptosis-through-mitochondrial-and-death-receptor-dependent-pathways-in-chicken-immune-organs
#5
Hongjing Zhao, Ying He, Siwen Li, Xiao Sun, Yu Wang, Yizhi Shao, Zhijun Hou, Mingwei Xing
In many organ dysfunctions, arsenic and its compounds are well known to induce apoptosis by the mitochondria and death receptor apoptotic pathways in liver and airway. However, it is less reported that which signaling pathways contribute to excessive apoptosis of chicken immune organs, a major target of toxic metals biotransformation, which suffer from subchronic arsenism. In this study, we investigated whether the mitochondria or death receptor apoptotic pathways activated in the immune organs (spleen, thymus and bursa of Fabricius) of one-day-old male Hy-line chickens exposed to arsenic trioxide (As2O3), which were fed on diets supplemented with 0, 0...
April 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28454084/preliminary-biological-evaluation-of-18f-alf-nota-mal-cys-annexin-v-as-a-novel-apoptosis-imaging-agent
#6
Chunxiong Lu, Quanfu Jiang, Minjin Hu, Cheng Tan, Huixin Yu, Zichun Hua
A novel annexin V derivative (Cys-Annexin V) with a single cysteine residue at its C-terminal has been successfully labeled site-specifically with NOTA-maleimide aluminum [18F]fluoride complexation and evaluated it as a novel apoptosis agent in vitro and in vivo. The total synthesis time of 18F-AlF-NOTA-MAL-Cys-Annexin V from [18F]fluoride was about 65 min. The tracer was stable in vitro and it was excreted through renal in normal mice. The rate of the tracer bound to erythrocytes with exposed phosphatidylserine was 89...
April 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28453962/a-bead-based-immunofluorescence-assay-on-a-microfluidic-dielectrophoresis-platform-for-rapid-dengue-virus-detection
#7
Edwar Iswardy, Tien-Chun Tsai, I-Fang Cheng, Tzu-Chuan Ho, Guey Chuen Perng, Hsien-Chang Chang
The proof of concept of utilizing a microfluidic dielectrophoresis (DEP) chip was conducted to rapidly detect a dengue virus (DENV) in vitro based on the fluorescence immunosensing. The mechanism of detection was that the DEP force was employed to capture the modified beads (mouse anti-flavivirus monoclonal antibody-coated beads) in the microfluidic chip and the DENV modified with fluorescence label, as the detection target, can be then captured on the modified beads by immunoreaction. The fluorescent signal was then obtained through fluorescence microscopy, and then quantified by ImageJ freeware...
April 12, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28453956/molecular-imaging-of-activated-platelets-via-antibody-targeted-ultra-small-iron-oxide-nanoparticles-displaying-unique-dual-mri-contrast
#8
Hang T Ta, Zhen Li, Christoph E Hagemeyer, Gary Cowin, Shaohua Zhang, Jathushan Palasubramaniam, Karen Alt, Xiaowei Wang, Karlheinz Peter, Andrew K Whittaker
Magnetic resonance imaging (MRI) is a powerful and indispensable tool in medical research, clinical diagnosis, and patient care due to its high spatial resolution and non-limited penetration depth. The simultaneous use of positive and negative MRI imaging that employs the same contrast agents will significantly improve detection accuracy. Here we report the development of functional multimodal iron oxide nanoparticles for targeted MRI of atherothrombosis using a combination of chemical and biological conjugation techniques...
April 22, 2017: Biomaterials
https://www.readbyqxmd.com/read/28453894/efficacy-and-safety-of-oral-propranolol-for-infantile-hemangioma-in-japan
#9
Tsuyoshi Kaneko, Satoru Sasaki, Naoko Baba, Katsuyoshi Koh, Kiyoshi Matsui, Hiroyuki Ohjimi, Nobukazu Hayashi, Atsuko Nakano, Kentaro Ohki, Yoshihiro Kuwano, Akira Morimoto, Zenshiro Tamaki, Mariko Kakazu, Kazuo Kishi, Tomoki Oyama, Atsushi Sato, Rumiko Kato, Takeshi Higuchi
BACKGROUND: There have been few reports on the efficacy and safety of oral administration of propranolol at 3 mg/kg/day in Japanese infantile hemangioma (IH) patients. METHODS: A multicenter, open-label phase III study was conducted to evaluate the efficacy and safety of oral propranolol solution in Japanese infants aged 35 to 150 days with proliferating IH. Thirty-two patients were enrolled in the study, received propranolol solution for 24 weeks at 3 mg/kg/day, and completed the study...
April 28, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28453867/syndecan-1-regulates-dendritic-cell-migration-in-cutaneous-hypersensitivity-to-haptens
#10
Marco Averbeck, Stephanie Kuhn, Johannes Bühligen, Martin Götte, Jan C Simon, Tobias Polte
In human dendritic cells (DC), we previously demonstrated in vitro that syndecan-1 (SDC1) is downregulated during maturation correlating with enhanced motility. We investigated the effects of SDC1 on DC migration in vivo during TNCB(2,4,6-trinitro-1-chlorobenzene)-induced cutaneous hypersensitivity reaction (CHS) in mice. We show that DC in SDC1-deficient mice migrated faster and at a higher rate to lymph nodes draining the hapten-painted skin. Adoptive transfer of SDC1-deficient hapten- and fluorochrome-labelled DC into wild type (WT) mice led to increased and faster migration of DC to paracortical lymph nodes, and to a stronger CHS compared to WT DC...
April 28, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28453835/herpes-simplex-virus-type-2-acquisition-among-hiv-1-infected-adults-treated-with-tenofovir-disoproxyl-fumarate-as-part-of-combination-antiretroviral-therapy-results-from-the-actg-a5175-pearls-study
#11
Connie Celum, Ting Hong, Anne Cent, Deborah Donnell, Rhoda Morrow, Jared M Baeten, Cynthia Firnhaber, Beatriz Grinsztejn, Mina C Hosseinipour, Umesh Lalloo, Mulinda Nyirenda, Cynthia Riviere, Jorge Sanchez, Breno Santos, Khuanchai Supparatpinyo, James Hakim, N Kumarasamy, Thomas B Campbell
Objective.: Tenofovir disoproxyl fumarate (TDF) disoproxyl fumarate (TDF) has in vitro activity against herpes simplex virus type 2 (HSV-2) and reduced HSV-2 acquisition as preexposure prophylaxis. Whether TDF-containing antiretroviral therapy (ART) reduces HSV-2 acquisition is unknown. Design.: Secondary analysis of AIDS Clinical Trials Group A5175, a randomized, open-label study of 3 ART regimens among 1571 participants. Methods.: HSV-2 serostatus was assessed at baseline, at study exit, and before a change in ART regimen...
March 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28453788/usage-of-dexamethasone-increases-the-risk-of-cranial-neural-crest-dysplasia-in-the-chick-embryo
#12
Xin Cheng, He Li, Yu Yan, Guang Wang, Zachary Berman, Manli Chuai, Xuesong Yang
Dexamethasone (Dex) is commonly used in the treatment of a variety of benign and malignant conditions. Unfortunately, although it has a variety of teratogenic effects, it remains used in clinical practice for pregnant women mainly due to limited alternatives. However, there is limited knowledge of the mechanisms that lead to the observed teratogenic effects. In this study, the effects of Dex during embryogenesis on neural crest development were evaluated in the early chick embryos. First, we demonstrated that 100µL 10-6 M Dex treatment leads to craniofacial developmental defects, and also retards embryo growth and plausibly can cause embryo demise...
April 27, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28453775/deconvoluting-kinase-inhibitor-induced-cardiotoxicity
#13
Sarah D Lamore, Ernst Ahlberg, Scott Boyer, Michelle L Lamb, Maria P Hortigon-Vinagre, Victor Rodriguez, Godfrey L Smith, Johanna Sagemark, Lars Carlsson, Stephanie M Bates, Allison L Choy, Jonna Stålring, Clay W Scott, Matthew F Peters
Many drugs designed to inhibit kinases have their clinical utility limited by cardiotoxicity-related label warnings or prescribing restrictions. While this liability is widely recognized, designing safer kinase inhibitors (KI) requires knowledge of the causative kinase(s). Efforts to unravel the kinases have encountered pharmacology with nearly prohibitive complexity. At therapeutically relevant concentrations, KIs show promiscuity distributed across the kinome. Here, to overcome this complexity, 65 KIs with known kinome-scale polypharmacology profiles were assessed for effects on cardiomyocyte beating...
April 26, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28453563/reproductive-success-is-energetically-linked-to-foraging-efficiency-in-antarctic-fur-seals
#14
Tiphaine Jeanniard-du-Dot, Andrew W Trites, John P Y Arnould, Christophe Guinet
The efficiency with which individuals extract energy from their environment defines their survival and reproductive success, and thus their selective contribution to the population. Individuals that forage more efficiently (i.e., when energy gained exceeds energy expended) are likely to be more successful at raising viable offspring than individuals that forage less efficiently. Our goal was to test this prediction in large long-lived mammals under free-ranging conditions. To do so, we equipped 20 lactating Antarctic fur seals (Arctocephalus gazella) breeding on Kerguelen Island in the Southern Ocean with tags that recorded GPS locations, depth and tri-axial acceleration to determine at-sea behaviours and detailed time-activity budgets during their foraging trips...
2017: PloS One
https://www.readbyqxmd.com/read/28453392/histamine-as-an-endothelium-derived-relaxing-factor-in-aged-mesenteric-lymphatic-vessels
#15
Irina Tsoy Nizamutdinova, Daisuke Maejima, Takashi Nagai, Cynthia J Meininger, Anatoliy A Gashev
BACKGROUND: Knowledge of the mechanisms by which aging affects contracting lymphatic vessels remains incomplete; therefore, the functional role of histamine in the reaction of aged lymphatic vessels to increases in flow remains unknown. METHODS AND RESULTS: We measured and analyzed parameters of lymphatic contractility in isolated and pressurized rat mesenteric lymphatic vessels (MLVs) obtained from 9- and 24-month Fischer-344 rats under control conditions and after pharmacological blockade of nitric oxide (NO) by Nω-Nitro-L-arginine methyl ester hydrochloride (L-NAME, 100 μM) or/and blockade of histamine production by α-methyl-DL-histidine dihydrochloride (α-MHD, 10 μM)...
April 28, 2017: Lymphatic Research and Biology
https://www.readbyqxmd.com/read/28453382/flow-cytometric-single-cell-analysis-reveals-heterogeneity-between-adipose-depots
#16
Badwi B Boumelhem, Stephen J Assinder, Kim S Bell-Anderson, Stuart T Fraser
Understanding adipose tissue heterogeneity is hindered by the paucity of methods to analyze mature adipocytes at the single cell level. Here, we report a system for analyzing live adipocytes from different adipose depots in the adult mouse. Single cell suspensions of buoyant adipocytes were separated from the stromal vascular fraction and analyzed by flow cytometry. Compared to other lipophilic dyes, Nile Red uptake effectively distinguished adipocyte populations. Nile Red fluorescence increased with adipocyte size and granularity and could be combined with MitoTracker® Deep Red or fluorescent antibody labeling to further dissect adipose populations...
April 14, 2017: Adipocyte
https://www.readbyqxmd.com/read/28453381/degradation-of-protein-translation-machinery-by-amino-acid-starvation-induced-macroautophagy
#17
Christine Gretzmeier, Sven Eiselein, Gregory R Johnson, Rudolf Engelke, Heike Nowag, Mostafa Zarei, Victoria Küttner, Andrea C Becker, Kristoffer T G Rigbolt, Maria Høyer-Hansen, Jens S Andersen, Christian Münz, Robert F Murphy, Jörn Dengjel
Macroautophagy is regarded as a nonspecific bulk degradation process of cytoplasmic material within the lysosome. However, the process has mainly been studied by nonspecific bulk degradation assays using radiolabeling. In the present study we monitor protein turnover and degradation by global, unbiased approaches relying on quantitative mass spectrometry-based proteomics. Macroautophagy is induced by rapamycin treatment, and by amino acid and glucose starvation in differentially, metabolically labeled cells...
April 28, 2017: Autophagy
https://www.readbyqxmd.com/read/28449565/effect-of-oxcarbazepine-on-serum-brain-derived-neurotrophic-factor-in-bipolar-mania-an-exploratory-study
#18
Rituparna Maiti, Biswa Ranjan Mishra, Jaseem Jowhar, Debadatta Mohapatra, Sansita Parida, Debasis Bisoi
Objective: In bipolar disorder, serum brain-derived neurotrophic factor (BDNF) level decreases leading to dysfunctions of critical neurotrophic, cellular plasticity and neuroprotective processes. The present study was conducted to evaluate the change in serum BDNF level with oxcarbazepine monotherapy in bipolar mania. Methods: The present study is a prospective, interventional, open label clinical study conducted on 25 patients of bipolar mania and 25 healthy controls...
May 31, 2017: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28449402/postprandial-renal-haemodynamic-effect-of-lixisenatide-versus-once-daily-insulin-glulisine-in-type-2-diabetes-patients-on-insulin-glargine-an-8-week-randomised-open-label-trial
#19
Lennart Tonneijck, Marcel H A Muskiet, Mark M Smits, Trynke Hoekstra, Mark H H Kramer, A H Jan Danser, Michaela Diamant, Jaap A Joles, Daniël H van Raalte
AIMS: To determine whether lixisenatide, a prandial short-acting glucagon-like peptide receptor agonist (GLP-1RA), ameliorates postprandial glomerular hyperfiltration in type 2 diabetes mellitus (T2DM)-patients compared to insulin-glulisine (iGlu) . METHODS: Postprandial renal haemodynamic effects of 8-week treatment with lixisenatide 20 µg versus once-daily titrated iGlu were measured in 35 overweight T2DM-patients inadequately controlled on insulin-glargine, with or without metformin (mean±SD age 62 ± 7years, HbA1c 8...
April 27, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28449373/biophysical-analysis-of-the-dynamics-of-calmodulin-interactions-with-neurogranin-and-ca2-calmodulin-dependent-kinase-ii
#20
Christian Seeger, Vladimir O Talibov, U Helena Danielson
Calmodulin (CaM) functions depend on interactions with CaM-binding proteins, regulated by Ca2+. Induced structural changes influence the affinity, kinetics, and specificities of the interactions. The dynamics of CaM interactions with neurogranin (Ng) and the CaM-binding region of Ca2+/calmodulin-dependent kinase II (CaMKII290-309 ) have been studied using biophysical methods. These proteins have opposite Ca2+ dependencies for CaM binding. Surface plasmon resonance biosensor analysis confirmed that Ca2+ and CaM interact very rapidly, and with moderate affinity ( KDSPR=3μM)...
April 27, 2017: Journal of Molecular Recognition: JMR
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