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https://www.readbyqxmd.com/read/29223875/snakes-exhibit-tissue-specific-variation-in-cardiotonic-steroid-sensitivity-of-na-k-atpase
#1
Shabnam Mohammadi, Georg Petschenka, Susannah S French, Akira Mori, Alan H Savitzky
Toads are among several groups of organisms chemically defended with lethal concentrations of cardiotonic steroids. As a result, most predators that prey on amphibians avoid toads. However, several species of snakes have gained resistance-conferring mutations of Na+/K+-ATPase, the molecular target of cardiotonic steroids, and can feed on toads readily. Despite recent advances in our understanding of this adaptation at the genetic level, we have lacked functional evidence for how mutations of Na+/K+-ATPase account for cardiotonic steroid resistance in snake tissues...
December 6, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29206661/the-need-and-opportunity-for-donation-after-circulatory-death-worldwide
#2
Martí Manyalich, Helen Nelson, Francis L Delmonico
PURPOSE OF REVIEW: The global shortage of organ donors will not be resolved solely by relying on deceased donation following a brain death determination (DBD). Expansion of deceased donation after circulatory death (DCD) will be needed to address the shortfall of organs for transplantation. Approximately 120 000 organ transplants are performed each year; however, the WHO estimates that this number of transplants only resolves 10% of the annual worldwide transplant need. RECENT FINDINGS: The report addresses the opportunity of DCD expansion by evaluating the DCD potential that is not being realized, the utility of DCD enabling DBD to emerge in some clinical situations, by the effectiveness of a donor registry in achieving DCD, and by the current clinical research of heart, lung, and liver transplantation from DCD...
December 4, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/29205995/volume-and-health-outcomes-evidence-from-systematic-reviews-and-from-evaluation-of-italian-hospital-data
#3
Laura Amato, Danilo Fusco, Anna Acampora, Katia Bontempi, Alessandro Cesare Rosa, Paola Colais, Fabio Cruciani, Mariangela D'Ovidio, Francesca Mataloni, Silvia Minozzi, Zuzana Mitrova, Luigi Pinnarelli, Rosella Saulle, Salvatore Soldati, Chiara Sorge, Simona Vecchi, Martina Ventura, Marina Davoli
BACKGROUND Improving quality and effectiveness of healthcare is one of the priorities of health policies. Hospital or physician volume represents a measurable variable with an impact on effectiveness of healthcare. An Italian law calls for the definition of «qualitative, structural, technological, and quantitative standards of hospital care». There is a need for an evaluation of the available scientific evidence in order to identify qualitative, structural, technological, and quantitative standards of hospital care, including the volume of care above or below which the public and private hospitals may be accredited (or not) to provide specific healthcare interventions...
September 2017: Epidemiologia e Prevenzione
https://www.readbyqxmd.com/read/29205955/selection-of-antioxidants-against-ovarian-oxidative-stress-in-mouse-model
#4
Bojiang Li, Qiannan Weng, Zequn Liu, Ming Shen, Jiaqing Zhang, Wangjun Wu, Honglin Liu
Oxidative stress (OS) plays an important role in the process of ovarian granulosa cell apoptosis and follicular atresia. The aim of this study was to select antioxidant against OS in ovary tissue. Firstly, we chose the six antioxidants and analyzed the reactive oxygen species (ROS) level in the ovary tissue. The results showed that proanthocyanidins, gallic acid, curcumin, and carotene decrease the ROS level compared with control group. We further demonstrated that both proanthocyanidins and gallic acid increase the antioxidant enzymes activity...
December 4, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29199410/non-alcoholic-fatty-liver-disease-the-emerging-burden-in-cardiometabolic-and-renal-diseases
#5
REVIEW
Eugene Han, Yong Ho Lee
As the number of individuals with non-alcoholic fatty liver disease (NAFLD) has increased, the influence of NAFLD on other metabolic diseases has been highlighted. Accumulating epidemiologic evidence indicates that NAFLD not only affects the liver but also increases the risk of extra-hepatic diseases such as type 2 diabetes mellitus, metabolic syndrome, dyslipidemia, hypertension, cardiovascular or cerebrovascular diseases, and chronic kidney disease. Non-alcoholic steatohepatitis, an advanced type of NAFLD, can aggravate these inter-organ relationships and lead to poorer outcomes...
November 17, 2017: Diabetes & Metabolism Journal
https://www.readbyqxmd.com/read/29198892/rtb-lectin-mediated-delivery-of-lysosomal-%C3%AE-l-iduronidase-mitigates-disease-manifestations-systemically-including-the-central-nervous-system
#6
Li Ou, Michael J Przybilla, Brenda Koniar, Chester B Whitley
Mucopolysaccharidosis type I (MPS I) is a lysosomal disease resulting from deficiency in the α-L-iduronidase (IDUA) hydrolase and subsequent accumulation of glycosaminoglycan (GAG). Clinically, enzyme replacement therapy (ERT) with IDUA achieves negligible neurological benefits presumably due to blood-brain-barrier (BBB) limitations. To investigate the plant lectin ricin B chain (RTB) as a novel carrier for enzyme delivery to the brain, an IDUA:RTB fusion protein (IDUAL), produced in N. benthamiana leaves, was tested in a murine model of Hurler syndrome (MPS I)...
November 28, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29197298/pharmacokinetics-and-tissue-distribution-study-of-10-methoxycamptothecin-in-rats-following-intragastric-administration
#7
Jian Zheng, Yong Ji, Changmin Shao, Lijia Jing, Yang Wang
Natural bioactive derivatives of camptothecin (CPT), 10-methoxycamptothecin (MCPT) and 10-hydroxycamptothecin (HCPT) have been confirmed to possess high antitumor activities. MCPT could be metabolized to HCPT in vivo. The HPLC method for the quantification of MCPT and HCPT was established and validated, and the pharmacokinetics and the tissue distribution of MCPT in rats after i.v. administration have been well carried out in our previous studies. To improve the further understanding of the in vivo behavior of MCPT, a rapid and sensitive UPLC-MS/MS method was developed and validated for the quantification of MCPT and HCPT in plasma and tissue samples, and the pharmacokinetics and tissue distribution as well as the bioavailability of MCPT after i...
November 29, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29197231/uptake-and-effects-of-2-4-6-trinitrotoluene-tnt-in-juvenile-atlantic-salmon-salmo-salar
#8
Espen Mariussen, Siv Marie Stornes, Kari Oline Bøifot, Bjørn Olav Rosseland, Brit Salbu, Lene Sørlie Heier
Organ specific uptake and depuration, and biological effects in Atlantic salmon (Salmo salar) exposed to 2, 4, 6-trinitrotoluene (TNT) were studied. Two experiments were conducted, the first using radiolabeled TNT (14C-TNT, 0.16mg/L) to study uptake (48h) and depuration (48h), while the second experiment focused on physiological effects in fish exposed to increasing concentrations of unlabeled TNT (1μg-1mg/L) for 48h. The uptake of 14C-TNT in the gills and most of the organs increased rapidly during the first 6h of exposure (12h in the brain) followed by a rapid decrease even though the fish were still exposed to TNT in the water...
November 24, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/29196041/nose-to-brain-delivery-of-insulin-enhanced-by-a-nanogel-carrier
#9
Pasquale Picone, Maria Antonietta Sabatino, Lorena Anna Ditta, Antonella Amato, Pier L San Biagio, Flavia Mulè, Daniela Giacomazza, Clelia Dispenza, Marta Di Carlo
Recent evidences suggest that insulin delivery to the brain can be an important pharmacological therapy for some neurodegenerative pathologies, including Alzheimer disease (AD). Due to the presence of the Blood Brain Barrier, a suitable carrier and an appropriate route of administration are required to increase the efficacy and safety of the treatment. Here, poly(N-vinyl pyrrolidone)-based nanogels (NG), synthetized by e-beam irradiation, alone and with covalently attached insulin (NG-In) were characterized for biocompatibility and brain delivery features in a mouse model...
November 28, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29190529/a-review-of-emerging-adsorbents-and-current-demand-for-defluoridation-of-water-bright-future-in-water-sustainability
#10
REVIEW
Krishna Kumar Yadav, Neha Gupta, Vinit Kumar, Shakeel Ahmad Khan, Amit Kumar
Fluoride contamination of groundwater is a serious problem in several countries of the world because of the intake of excessive fluoride caused by the drinking of the contaminated groundwater. Geological and anthropogenic factors are responsible for the contamination of groundwater with fluoride. Excess amounts of fluoride in potable water may cause irreversible demineralisation of bone and tooth tissues, a condition called fluorosis, and long-term damage to the brain, liver, thyroid, and kidney. There has long been a need for fluoride removal from potable water to make it safe for human use...
November 27, 2017: Environment International
https://www.readbyqxmd.com/read/29183810/identification-structural-characterization-and-expression-analysis-of-toll-like-receptors-2-and-3-from-gibel-carp-carassius-auratus-gibelio
#11
Yuding Fan, Yong Zhou, Lingbing Zeng, Nan Jiang, Wenzhi Liu, Jianqing Zhao, Qiwang Zhong
Toll-like receptors (TLRs) are important components of innate immunity. TLRs recognize pathogen-associated molecular patterns (PAMPs) and initiate downstream signaling pathways in response. In present study, we report the identification of two TLRs from gibel carp (Carassius auratus gibelio), TLR2 and TLR3 (designated CagTLR2 and CagTLR3, respectively). We report on the genomic structures and mRNA expression patterns of CagTLR2 and CagTLR3. Five exons and four introns were identified from the genomic DNA sequence of CagTLR3 (4749 bp in total length); this genomic organization is similar to that of TLR3 in zebrafish and human...
November 26, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29182728/an-evaluation-of-the-impact-of-aloe-vera-and-licorice-extracts-on-the-course-of-experimental-pigeon-paramyxovirus-type-1-infection-in-pigeons
#12
D Dziewulska, T Stenzel, M Smialek, B Tykalowski, A Koncicki
The progressive decrease in the efficiency of synthetic drugs has prompted research into phytogenic feed additives with potentially immunomodulatory and anti-infective properties. Complex diseases with a mixed etiology, including viral, pose a growing problem in domestic pigeons. The aim of this study was to determine the effectiveness of various doses of aloe vera and licorice extracts on the course of experimental PPMV-1 infection in pigeons. The experiment was performed on pigeons divided into 5 groups, including one control group and 4 experimental groups, which were orally administered aloe vera or licorice extracts at 300 or 500 mg/kg BW for 7 d after experimental inoculation with PPMV-1...
November 22, 2017: Poultry Science
https://www.readbyqxmd.com/read/29178369/pharmacokinetics-and-tissue-distribution-of-pefloxacin-mesylate-in-chickens
#13
Shuqian Lin, Guiming Li, Zengcheng Zhao, Jian Fu, Minyan Feng, Minxun Song, Zhongli Huang, Shifa Yang, Shuli Wang, Renzhong Wan
A specific, sensitive and stable high-performance liquid chromatography (HPLC)-based analytical method was established to determine the level of pefloxacin mesylate (PM) in the plasma and various tissues of chickens. Chickens were randomly assigned to 12 equal experiment groups, including 11 treatment groups and one control group. The chickens in the treatment groups received oral administration of PM and were sacrificed at different pre-determined time points, with their blood and various organs harvested, extracted and analyzed by HPLC to quantify the level of the residual antibiotic...
November 27, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/29166539/an-unusual-cause-of-headache-and-sudden-death-of-a-young-sailor-postmortem-computed-tomography-and-histological-findings-of-a-fatal-retroperitoneal-malignant-mixed-germ-cell-tumor
#14
Belinda Lee, Michelle Chan, Ronald Goh
A 26-year-old Caucasian sailor, with no past medical history aside from headache for the last 1 week, was found dead in his cabin. The body was stored in a refrigerator on board and disembarked for autopsy 3 days later. Autopsy showed a large, nodular, necrotic and hemorrhagic retroperitoneal mass, and smaller hemorrhagic nodules in the brain, lungs, liver, and left kidney, with the brain being markedly edematous. Both testes were descended and normal. Histologically, the retroperitoneal mass showed a malignant mixed germ cell tumor comprising choriocarcinoma, embryonal carcinoma, and teratoma components...
November 22, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/29166265/selection-of-reference-genes-for-quantitative-real-time-rt-pcr-on-gene-expression-in-golden-pompano-trachinotus-ovatus
#15
X J Chen, X Q Zhang, S Huang, Z J Cao, Q W Qin, W T Hu, Y Sun, Y C Zhou
Golden pompano (Trachinotus ovatus) is an important economically fish species. In this study, with an aim to identify reliable reference genes for quantitative real-time PCR (qRT-PCR) in golden pompano, we evaluated the expression stability of eight housekeeping genes in the presence and absence of poly I:C stimulation in eight tissues. The PCR data was analyzed by geNorm and NormFinder algorithms. The results showed that the expression of all the examined genes exhibited tissue-dependent variations. When under normal physiological condition, geNorm and NormFinder identified B2M and 18S as suitable genes...
September 26, 2017: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/29162715/bacteriophage-transcytosis-provides-a-mechanism-to-cross-epithelial-cell-layers
#16
Sophie Nguyen, Kristi Baker, Benjamin S Padman, Ruzeen Patwa, Rhys A Dunstan, Thomas A Weston, Kyle Schlosser, Barbara Bailey, Trevor Lithgow, Michael Lazarou, Antoni Luque, Forest Rohwer, Richard S Blumberg, Jeremy J Barr
Bacterial viruses are among the most numerous biological entities within the human body. These viruses are found within regions of the body that have conventionally been considered sterile, including the blood, lymph, and organs. However, the primary mechanism that bacterial viruses use to bypass epithelial cell layers and access the body remains unknown. Here, we used in vitro studies to demonstrate the rapid and directional transcytosis of diverse bacteriophages across confluent cell layers originating from the gut, lung, liver, kidney, and brain...
November 21, 2017: MBio
https://www.readbyqxmd.com/read/29162562/metabolic-effects-of-bariatric-surgery
#17
REVIEW
Piriyah Sinclair, Neil Docherty, Carel W le Roux
BACKGROUND: Obesity can be defined as a chronic subcortical brain disease, as there is an important neurophysiological component to its etiology based on changes in the functioning of those areas of the brain controlling food intake and reward. Extensive metabolic changes accompany bariatric surgery-based treatment of obesity. Consequently, the term "metabolic" surgery is being increasingly adopted in relation to the beneficial effects these procedures have on chronic diseases like type 2 diabetes...
November 21, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/29156531/heated-naringin-mitigate-the-genotoxicity-effect-of-mitomycin-c-in-balb-c-mice-through-enhancing-the-antioxidant-status
#18
Mouna Maatouk, Nadia Mustapha, Imen Mokdad-Bzeouich, Hind Chaaban, Irina Ioannou, Kamel Ghedira, Mohamed Ghoul, Leila Chekir-Ghedira
A major problem with cancer chemotherapy is its severe toxic effects on non-target tissues. Assessment of natural products for their protective effect against anticancer drugs induced toxicity is gaining importance in cancer biology. The aim of the present study was to evaluate the effect of native and thermal treated naringin on the protective effect against mitomycin C (MMC) induced genotoxicity. The genotoxicity in liver kidney and brain cells isolated from Balb/C mice were evaluated by performing the comet assay...
November 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29156491/long-term-calcineurin-inhibitor-therapy-and-brain-function-in-patients-after-liver-transplantation
#19
Henning Pflugrad, Anna-Kristina Schrader, Anita Blanka Tryc, Xiaoqi Ding, Heinrich Lanfermann, Elmar Jäckel, Harald Schrem, Jan Beneke, Hannelore Barg-Hock, Jürgen Klempnauer, Karin Weissenborn
BACKGROUND AND AIMS: Calcineurin inhibitors (CNI) frequently induce neurological complications early after orthotopic liver transplantation (OLT). We hypothesize that long-term CNI therapy after OLT causes dose-dependent cognitive dysfunction and alteration of brain structure. METHODS: Eighty-five OLT patients (20 with CNI free, 35 with CNI low dose and 30 with standard dose CNI immunosuppression) underwent psychometric testing and cerebral magnetic resonance tomography about 10 years after OLT to assess brain function and structural brain alterations...
November 20, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/29155029/molecular-characterization-and-expression-analysis-of-complement-component-3-in-dojo-loach-misgurnus-anguillicaudatus
#20
Yongsheng Xu, Yongyao Yu, Xiaoting Zhang, Zhenyu Huang, Huili Li, Shuai Dong, Yangzhou Liu, Fen Dong, Zhen Xu
The complement component 3 (C3) is a central component of complement system. All three pathways converge at formation of C3 convertases and share the terminal pathways of membrane attack complex (MAC) formation. In this study, three isoforms of C3 were discovered in Misgurnus anguillicaudatus, named "C3-1", "C3-2" and "C3-3", respectively. The full-length of C3-1 cDNA sequence was firstly identified and analyzed from dojo loach (Misgurnus anguillicaudatus). The Ma-C3-1 cDNA sequence comprised of 4509 bp encoding 1454 amino acids with a putative signal peptide of 20 amino acid residues...
November 15, 2017: Fish & Shellfish Immunology
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