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https://www.readbyqxmd.com/read/28535614/elucidating-bottlenecks-of-the-efficient-preparation-of-an-ab5-hexamer-mucosal-adjuvant-protein-ltm-by-genetic-engineering
#1
Di Liu, Fabiao Hu, Wenpeng Wang, Dong Wu, Xiujuan He, Wenyun Zheng, Haipeng Liu, Xingyuan Ma
Escherichia coli heat-labile enterotoxin (LT) and its non-toxic mutant (LTm) are well-known powerful mucosal adjuvants and immunogens. However, the yields of these adjuvants from genetically engineered strains remain at extremely low levels, thereby hindering their extensive application in fundamental and clinical research. Therefore, efficient production of these adjuvant proteins from genetically engineered microbes is a huge challenge in the field of molecular biology. In order to explore expression bottlenecks of LTm in E...
May 24, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28535183/time-caloric-restriction-inhibits-the-neoplastic-transformation-of-cirrhotic-liver-in-rats-treated-with-diethylnitrosamine
#2
Christian Molina-Aguilar, María de Jesús Guerrero-Carrillo, Jesús Javier Espinosa-Aguirre, Sitlali Olguin-Reyes, Thania Castro-Belio, Olivia Vázquez-Martínez, Julieta Berenice Rivera-Zavala, Mauricio Díaz-Muñoz
Hepatocellular cancer is the most common type of primary liver cancer. Cirrhosis is the main risk factor that generates this malady. It has been proven that caloric restriction protocols and restricted feeding schedules are protective in experimental carcinogenic models. We tested the influence of a time-caloric restriction protocol (2 h of food access during the daytime for 18 weeks) in an experimental model of cirrhosis-hepatocarcinoma produced by weekly administration of diethylnitrosamine. Our results indicate that time-caloric restriction reduced hepatomegaly and prevented the increase in blood leukocytes promoted by diethylnitrosamine...
May 23, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28534724/maternal-protein-restriction-depresses-the-duodenal-expression-of-iron-transporters-and-serum-iron-level-in-male-weaning-piglets
#3
Wenqiang Ma, Jingyu Lu, Shuxia Jiang, Demin Cai, Shifeng Pan, Yimin Jia, Ruqian Zhao
To investigate the effects of maternal dietary protein restriction on offspring Fe metabolism, twenty-four second-parity Landrace×Yorkshire sows were randomly allocated to standard-protein (SP) and low-protein (LP) groups. The SP sows were fed diets containing 15 and 18 % crude protein throughout pregnancy and lactation, respectively, whereas the LP sows were subjected to 50 % dietary protein restriction. Offspring birth weight was not affected, but the body weight at weaning (P=0·06) and average daily gain (P=0·01) of the female piglets were significantly decreased...
April 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28534661/characterization-of-human-fetal-brain-endothelial-cells-reveals-barrier-properties-suitable-for-in%C3%A2-vitro-modeling-of-the-bbb-with-syngenic-co-cultures
#4
Allison M Andrews, Evan M Lutton, Lee A Cannella, Nancy Reichenbach, Roshanak Razmpour, Matthew J Seasock, Steven J Kaspin, Steven F Merkel, Dianne Langford, Yuri Persidsky, Servio H Ramirez
Endothelial cells (ECs) form the basis of the blood-brain barrier (BBB), a physical barrier that selectively restricts transport into the brain. In vitro models can provide significant insight into BBB physiology, mechanisms of human disease pathology, toxicology, and drug delivery. Given the limited availability of primary human adult brain microvascular ECs ( aBMVECs), human fetal tissue offers a plausible alternative source for multiple donors and the opportunity to build syngenic tri-cultures from the same host...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28534438/the-axonal-cytoskeleton-and-the-assembly-of-nodes-of-ranvier
#5
Aniket Ghosh, Diane L Sherman, Peter J Brophy
Vertebrate nervous systems rely on rapid nerve impulse transmission to support their complex functions. Fast conduction depends on ensheathment of nerve axons by myelin-forming glia and the clustering of high concentrations of voltage-gated sodium channels (Nav) in the axonal gaps between myelinated segments. These gaps are the nodes of Ranvier. Depolarization of the axonal membrane initiates the action potential responsible for impulse transmission, and the Nav help ensure that this is restricted to nodes...
May 1, 2017: Neuroscientist: a Review Journal Bringing Neurobiology, Neurology and Psychiatry
https://www.readbyqxmd.com/read/28534273/tauroursodeoxycholic-acid-enhances-mitochondrial-biogenesis-neural-stem-cell-pool-and-early-neurogenesis-in-adult-rats
#6
Rita Soares, Filipa F Ribeiro, Sara Xapelli, Tânia Genebra, Maria F Ribeiro, Ana M Sebastião, Cecília M P Rodrigues, Susana Solá
Although neurogenesis occurs in restricted regions of the adult mammalian brain, neural stem cells (NSCs) produce very few neurons during ageing or after injury. We have recently discovered that the endogenous bile acid tauroursodeoxycholic acid (TUDCA), a strong inhibitor of mitochondrial apoptosis and a neuroprotective in animal models of neurodegenerative disorders, also enhances NSC proliferation, self-renewal, and neuronal conversion by improving mitochondrial integrity and function of NSCs. In the present study, we explore the effect of TUDCA on regulation of NSC fate in neurogenic niches, the subventricular zone (SVZ) of the lateral ventricles and the hippocampal dentate gyrus (DG), using rat postnatal neurospheres and adult rats exposed to the bile acid...
May 22, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28533926/concomitant-lymphoplasmacytic-lymphoma-and-plasma-cell-myeloma-a-diagnostic-challenge
#7
Ahmad T Mansour, Alaleh Esmaeili Shandiz, Michelle K Zimmerman, Trenton D Roth, Jiehao Zhou
BACKGROUND: Lymphoplasmacytic lymphoma and plasma cell myeloma are two B cell lymphoproliferative neoplasms derived from mature B-lymphocytes in different differentiation stages. The coexistence of these two tumors in the same patient is exceedingly rare and can be difficult to diagnose. CASE PRESENTATION: A 76-year-old male presented with a pathologic fracture after a fall. Radiography showed a lytic lesion in the pelvis. Serum immunofixation showed distinct IgM kappa and IgA kappa monoclonal protein bands...
2017: American Journal of Blood Research
https://www.readbyqxmd.com/read/28533453/selection-of-the-intrinsic-polarization-properties-of-animal-optical-materials-creates-enhanced-structural-reflectivity-and-camouflage
#8
Kathryn D Feller, Thomas M Jordan, David Wilby, Nicholas W Roberts
Many animals use structural coloration to create bright and conspicuous visual signals. Selection of the size and shape of the optical structures animals use defines both the colour and intensity of the light reflected. The material used to create these reflectors is also important; however, animals are restricted to a limited number of materials: commonly chitin, guanine and the protein, reflectin. In this work we highlight that a particular set of material properties can also be under selection in order to increase the optical functionality of structural reflectors...
July 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28532842/effects-of-diet-and-arginine-treatment-during-the-luteal-phase-on-ovarian-no-pgc-1%C3%AE-signaling-in-ewes
#9
Yi-Xuan Guo, Hai-Tao Nie, Ling-Wei Sun, Guo-Min Zhang, Kai-Ping Deng, Yi-Xuan Fan, Feng Wang
The aim of this study was to determine whether arginine (Arg) supplementation of malnourished ewes affects the expression of key NO/PGC-1α signaling pathway genes in the ovary. On Day 6-15 of the estrous cycle, 24 multiparous Hu sheep (BW = 43.56 ± 1.53 kg) were randomly assigned to three groups: control group (CG; n = 6), restriction group (RG; n = 9) and l-arginine group (AG; n = 9), and administered Arg treatment (or vehicle) three times per day. The ewes were slaughtered at the end of treatment, and blood samples and ovaries were collected for analysis...
July 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28532817/-pro-renin-receptor-as-a-therapeutic-target-for-the-treatment-of-cardiovascular-diseases
#10
REVIEW
Yuan Sun, A H Jan Danser, Xifeng Lu
The discovery of the (pro)renin receptor [(P)RR] 15years ago stimulated ideas on prorenin being more than renin's inactive precursor. Indeed, binding of prorenin to the (P)RR induces a conformational change in the prorenin molecule, allowing it to display angiotensin-generating activity, and additionally results in intracellular signaling in an angiotensin-independent manner. However, the prorenin levels required to observe these angiotensin-dependent and -independent effects of the (P)RR are many orders above its in vivo concentrations, both under normal and pathological conditions...
May 19, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28532666/transcription-of-immune-related-genes-in-solea-senegalensis-vaccinated-against-photobacterium-damselae-subsp-piscicida-identification-of-surrogates-of-protection
#11
J A Núñez-Díaz, I García de la Banda, C Lobo, M A Moriñigo, M C Balebona
Solea senegalensis is a flatfish with a great potential for aquaculture, but infectious diseases restrict its production, being this fish species highly susceptible to Photobacterium damselae subsp. piscicida (Phdp) infections. A better understanding of the mechanisms related to fish immune response is crucial for the development of effective approaches in disease management. In the present work, transcriptional changes of immune related genes have been evaluated in farmed S. senegalensis specimens vaccinated against Phdp by intraperitoneal injection (IP) and immersion (IM)...
May 19, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28532067/development-of-biocompatible-and-safe-polyethersulfone-hemodialysis-membrane-incorporated-with-functionalized-multi-walled-carbon-nanotubes
#12
Muhammad Nidzhom Zainol Abidin, Pei Sean Goh, Ahmad Fauzi Ismail, Mohd Hafiz Dzarfan Othman, Hasrinah Hasbullah, Noresah Said, Siti Hamimah Sheikh Abdul Kadir, Fatmawati Kamal, Mohd Sohaimi Abdullah, Be Cheer Ng
A novel approach in the design of a safe, high performance hemodialysis membrane is of great demand. Despite many advantages, the employment of prodigious nanomaterials in hemodialysis membrane is often restricted by their potential threat to health. Hence, this work focusses on designing a biocompatible polyethersulfone (PES) hemodialysis membrane embedded with poly (citric acid)-grafted-multi walled carbon nanotubes (PCA-g-MWCNTs). Two important elements which could assure the safety of the nanocomposite membrane, i...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531397/most-consumed-processed-foods-by-patients-on-hemodialysis-alert-for-phosphate-containing-additives-and-the-phosphate-to-protein-ratio
#13
Marcela T Watanabe, Raphael M Araujo, Barbara P Vogt, Pasqual Barretti, Jacqueline C T Caramori
BACKGROUND AND AIMS: Hyperphosphatemia is common in patients with chronic kidney disease (CKD) stages IV and V because of decreased phosphorus excretion. Phosphatemia is closely related to dietary intake. Thus, a better understanding of sources of dietary phosphate consumption, absorption and restriction, particularly inorganic phosphate found in food additives, is key to prevent consequences of this complication. Our aims were to investigate the most commonly consumed processed foods by patients with CKD on hemodialysis, to analyze phosphate and protein content of these foods using chemical analysis and to compare these processed foods with fresh foods...
August 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531322/evaluation-of-ifitm3-rs12252-association-with-severe-pediatric-influenza-infection
#14
Adrienne G Randolph, Wai-Ki Yip, E Kaitlyn Allen, Carrie M Rosenberger, Anna A Agan, Stephanie A Ash, Yu Zhang, Tushar R Bhangale, David Finkelstein, Natalie Cvijanovich, Peter M Mourani, Mark Hall, Helen C Su, Paul G Thomas
Background: Interferon inducible transmembrane protein 3 (IFITM3) restricts endocytic fusion of influenza virus. IFITM3 rs12252_C, a putative alternate splice site, has been associated with influenza severity in adults. IFITM3 has not been evaluated in pediatric influenza. Methods: The PICFLU Study enrolled children with suspected influenza infection across 38 pediatric intensive care units November 2008 to April 2016. IFITM3 was sequenced in patients and parents were genotyped for specific variants for family-based association testing...
May 20, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28531280/effects-of-calorie-restriction-and-fiber-type-on-glucose-uptake-and-abundance-of-electron-transport-chain-and-oxidative-phosphorylation-proteins-in-single-fibers-from-old-rats
#15
Haiyan Wang, Edward B Arias, Carmen S Yu, Anthony R P Verkerke, Gregory D Cartee
Calorie restriction (CR; reducing calorie intake by ~40% below ad libitum) can increase glucose uptake by insulin-stimulated muscle. Because skeletal muscle is comprised of multiple, heterogeneous fiber types, our primary aim was to determine in 23-26 months-old rats the effects of CR (initiated at 14 weeks-old) and fiber type on insulin-stimulated glucose uptake by single fibers of diverse fiber types. Isolated epitrochlearis muscles from AL and CR rats were incubated with [3H]-2-deoxyglucose ±insulin. Glucose uptake and fiber type were determined for single fibers dissected from the muscles...
May 22, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28531150/distinct-contributions-of-autophagy-receptors-in-measles-virus-replication
#16
Denitsa S Petkova, Pauline Verlhac, Aurore Rozières, Joël Baguet, Mathieu Claviere, Carole Kretz-Remy, Renaud Mahieux, Christophe Viret, Mathias Faure
Autophagy is a potent cell autonomous defense mechanism that engages the lysosomal pathway to fight intracellular pathogens. Several autophagy receptors can recognize invading pathogens in order to target them towards autophagy for their degradation after the fusion of pathogen-containing autophagosomes with lysosomes. However, numerous intracellular pathogens can avoid or exploit autophagy, among which is measles virus (MeV). This virus induces a complete autophagy flux, which is required to improve viral replication...
May 22, 2017: Viruses
https://www.readbyqxmd.com/read/28530552/physicochemical-properties-and-starch-digestibility-of-whole-grain-sorghums-millet-quinoa-and-amaranth-flours-as-affected-by-starch-and-non-starch-constituents
#17
Sathaporn Srichuwong, Delphine Curti, Sean Austin, Roberto King, Lisa Lamothe, Hugo Gloria-Hernandez
Minor grains such as sorghum, millet, quinoa and amaranth can be alternatives to wheat and corn as ingredients for whole grain and gluten-free products. In this study, influences of starch structures and other grain constituents on physicochemical properties and starch digestibility of whole flours made from these grains were investigated. Starches were classified into two groups according to their amylopectin branch chain-length: (i) quinoa, amaranth, wheat (shorter chains); and (ii) sorghum, millet, corn (longer chains)...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28529448/systematic-review-and-meta-analyses-of-foodservice-interventions-and-their-effect-on-nutritional-outcomes-and-satisfaction-of-adult-oncology-patients
#18
REVIEW
Elizabeth Doyle, Natalie Simmance, Helen Wilding, Judi Porter
AIM: An understanding of effective foodservice interventions on nutrition outcomes in adult patients with cancer is required to support clinical decision making. This systematic review aimed to determine the effect of foodservice interventions across a range of nutritional outcomes and satisfaction of hospitalised and ambulatory adult oncology patients. METHODS: The review protocol was registered with PROSPERO (CRD42016045772). Six databases were searched using search terms associated with the intervention and population...
April 2017: Nutrition & Dietetics: the Journal of the Dietitians Association of Australia
https://www.readbyqxmd.com/read/28528970/the-many-faces-of-compartmentalized-pka-signalosomes
#19
REVIEW
Omar Torres-Quesada, Johanna E Mayrhofer, Eduard Stefan
Cellular signal transmission requires the dynamic formation of spatiotemporally controlled molecular interactions. At the cell surface information is received by receptor complexes and relayed through intracellular signaling platforms which organize the actions of functionally interacting signaling enzymes and substrates. The list of hormone or neurotransmitter pathways that utilize the ubiquitous cAMP-sensing protein kinase A (PKA) system is expansive. This requires that the specificity, duration, and intensity of PKA responses are spatially and temporally restricted...
May 18, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28528958/investigation-of-calcium-dependent-activity-and-conformational-dynamics-of-zebra-fish-12-lipoxygenase
#20
Monica Mittal, Mahmudul Hasan, Navisraj Balagunaseelan, Alexander Fauland, Craig Wheelock, Olof Rådmark, Jesper Z Haeggström, Agnes Rinaldo-Matthis
BACKGROUND: A 12-lipoxygenase in zebra fish (zf12-LOX) was found to be required for normal embryonic development and LOXs are of great interest for targeted drug designing. In this study, we investigate the structural-functional aspects of zf12-LOX in response to calcium. METHODS: A soluble version of zf12-LOX was created by mutagenesis. Based on multiple sequence alignment, we mutated the putative calcium-responsive amino acids in N-PLAT domain of soluble zf12-LOX...
May 18, 2017: Biochimica et Biophysica Acta
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