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https://www.readbyqxmd.com/read/28539451/reducing-v3-antigenicity-and-immunogenicity-on-soluble-native-like-hiv-1-env-sosip-trimers
#1
Rajesh P Ringe, Gabriel Ozorowski, Kimmo Rantalainen, Weston B Struwe, Katie Matthews, Jonathan L Torres, Anila Yasmeen, Christopher A Cottrell, Thomas J Ketas, Celia C LaBranche, David C Montefiori, Albert Cupo, Max Crispin, Ian A Wilson, Andrew B Ward, Rogier W Sanders, P J Klasse, John P Moore
Native-like trimers of the SOSIP design are being developed as immunogens in human immunodeficiency virus type 1 (HIV-1) vaccine development programs. These trimers display the epitopes for multiple broadly neutralizing antibodies (bNAbs), but can also expose binding sites for some types of non-neutralizing antibodies (non-NAbs). Among the latter are epitopes in the gp120 V3 region that are highly immunogenic when SOSIP trimers are evaluated in animal models. It is presently uncertain whether antibodies against V3 can interfere with the induction of NAbs, but there are good arguments in favor of suppressing such "off-target" immune responses...
May 24, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28528412/bioindicators-of-organochlorine-pesticides-in-the-sea-of-okhotsk-and-the-western-bering-sea
#2
Vasiliy Yu Tsygankov, Margarita D Boyarova, Olga N Lukyanova, Nadezhda K Khristoforova
Organochlorine pesticides (OCPs), such as HCHs and DDTs, are still used as pesticides in the Southern Hemisphere and can reach the North Pacific due to long range atmospheric transfer. Marine mammals (Pacific walrus Odobenus rosmarus divergens, gray whale Eschrichtius robustus), the seabirds (Pacific gull Larus schistisagus, crested auklet Aethia cristatella, auklet crumb Aethia pusilla, northern fulmar Fulmarus glacialis, and grey petrel Oceanodroma furcata) and Pacific salmon (pink Oncorhynchus gorbuscha, chum O...
May 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28508403/physiochemical-and-functional-properties-of-chum-salmon-oncorhynchus-keta-skin-gelatin-extracted-at-different-temperatures
#3
Yang Liu, Lining Xia, Hui Jia, Qi Li, Wengang Jin, Xiuping Dong, Jinfeng Pan
BACKGROUND: Aquatic source gelatins are gaining more attention due to the advantages in safety and religion acceptability compared with mammalian source ones. For understanding extracting temperature effects on gelatins from chum salmon (Oncorhynchus keta) skins (GCSS), gelatins were extracted at temperatures from 40 to 90 °C and the physiochemical properties of GCSS were investigated. RESULTS: GCSS yield increased while imino acids content declined as the increase of temperature...
May 16, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28496186/an-ancient-selective-sweep-linked-to-reproductive-life-history-evolution-in-sockeye-salmon
#4
Andrew J Veale, Michael A Russello
Study of parallel (or convergent) phenotypic evolution can provide important insights into processes driving sympatric, ecologically-mediated divergence and speciation, as ecotype pairs may provide a biological replicate of the underlying signals and mechanisms. Here, we provide evidence for a selective sweep creating an island of divergence associated with reproductive behavior in sockeye salmon (Oncorhynchus nerka), identifying a series of linked single nucleotide polymorphisms across a ~22,733 basepair region spanning the leucine-rich repeat-containing protein 9 gene exhibiting signatures of divergent selection associated with stream- and shore-spawning in both anadromous and resident forms across their pan-Pacific distribution...
May 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28491036/pharmacological-activity-and-clinical-use-of-pdrn
#5
REVIEW
Francesco Squadrito, Alessandra Bitto, Natasha Irrera, Gabriele Pizzino, Giovanni Pallio, Letteria Minutoli, Domenica Altavilla
PDRN is a proprietary and registered drug that possesses several activities: tissue repairing, anti-ischemic, and anti-inflammatory. These therapeutic properties suggest its use in regenerative medicine and in diabetic foot ulcers. PDRN holds a mixture of deoxyribonucleotides with molecular weights ranging between 50 and 1,500 KDa, it is derived from a controlled purification and sterilization process of Oncorhynchus mykiss (Salmon Trout) or Oncorhynchus keta (Chum Salmon) sperm DNA. The procedure guarantees the absence of active protein and peptides that may cause immune reactions...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28470711/carbohydrate-recognition-by-the-rhamnose-binding-lectin-sul-i-with-a-novel-three-domain-structure-isolated-from-the-venom-of-globiferous-pedicellariae-of-the-flower-sea-urchin-toxopneustes-pileolus
#6
Tomomitsu Hatakeyama, Ayaka Ichise, Hideaki Unno, Shuichiro Goda, Tatsuya Oda, Hiroaki Tateno, Jun Hirabayashi, Hitomi Sakai, Hideyuki Nakagawa
The globiferous pedicellariae of the venomous sea urchin Toxopneustes pileolus contains several biologically active proteins. We have cloned the cDNA of one of the toxin components, SUL-I, which is a rhamnose-binding lectin that acts as a mitogen through binding to carbohydrate chains on target cells. Recombinant SUL-I (rSUL-I) was produced in Escherichia coli cells, and its carbohydrate-binding specificity was examined with the glycoconjugate microarray analysis, which suggested that potential target carbohydrate structures are galactose-terminated N-glycans...
May 3, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28464311/comparative-anatomy-of-the-dorsal-hump-in-mature-pacific-salmon
#7
Kenta Susuki, Masatoshi Ban, Masaki Ichimura, Hideaki Kudo
Mature male Pacific salmon (Genus Oncorhynchus) demonstrate prominent morphological changes, such as the development of a dorsal hump. The degree of dorsal hump formation depends on the species in Pacific salmon. It is generally accepted that mature males of sockeye (O. nerka) and pink (O. gorbuscha) salmon develop most pronounced dorsal humps. The internal structure of the dorsal hump in pink salmon has been confirmed in detail. In this study, the dorsal hump morphologies were analyzed in four Pacific salmon species inhabiting Japan, masu (O...
May 2, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28452089/congruent-population-structure-across-paralogous-and-non-paralogous-loci-in-salish-sea-chum-salmon-oncorhynchus-keta
#8
R K Waples, J E Seeb, L W Seeb
Whole genome duplications are major evolutionary events with a lasting impact on genome structure. Duplication events complicate genetic analyses as paralogous sequences are difficult to distinguish; consequently paralogs are often excluded from studies. The effects of an ancient whole genome duplication (approximately 88MYA) are still evident in salmonids through the persistence of numerous paralogous gene sequences and partial tetrasomic inheritance. We use restriction site-associated DNA sequencing (RADseq) on ten collections of chum salmon from the Salish Sea in the USA and Canada to investigate genetic diversity and population structure in both tetrasomic and re-diploidized regions of the genome...
April 28, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28251344/effects-of-habitat-features-on-size-biased-predation-on-salmon-by-bears
#9
Luke C Andersson, John D Reynolds
Predators can drive trait divergence among populations of prey by imposing differential selection on prey traits. Habitat characteristics can mediate predator selectivity by providing refuge for prey. We quantified the effects of stream characteristics on biases in the sizes of spawning salmon caught by bears (Ursus arctos and U. americanus) on the central coast of British Columbia, Canada by measuring size-biased predation on spawning chum (Oncorhynchus keta) and pink (O. gorbuscha) salmon in 12 streams with varying habitat characteristics...
May 2017: Oecologia
https://www.readbyqxmd.com/read/28159539/continued-midazolam-versus-diphenhydramine-in-difficult-to-sedate-patients-a-randomized-double-blind-trial
#10
Hamita Sachar, Nipaporn Pichetshote, Kavitha Nandigam, Keta Vaidya, Loren Laine
BACKGROUND AND AIMS: Current guidelines recommend diphenhydramine in patients undergoing endoscopy who are not adequately sedated with a benzodiazepine and opioid combination. Because this practice has not been adequately assessed, we performed a randomized, double-blind trial comparing diphenhydramine with continued midazolam in such patients. METHODS: Patients undergoing elective colonoscopy with moderate sedation were eligible. Sedation was measured with the Modified Observer's Assessment of Alertness/Sedation (MOAA/S) score with adequate sedation defined as 3 on a 0- to 5-point scale...
January 31, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28100887/production-of-a-health-beneficial-food-emulsifier-by-enzymatic-partial-hydrolysis-of-phospholipids-obtained-from-the-head-of-autumn-chum-salmon
#11
A K M Azad Shah, Toshihiro Nagao, Hideyuki Kurihara, Koretaro Takahashi
Phospholipids and their partial hydrolysates, namely lysophospholipids (LPLs), have been widely used in food, pharmaceutical, and cosmetic products as highly efficient emulsifiers. This study was conducted to produce docosahexaenoic acid (DHA)-esterified LPLs by enzymatic modification of phospholipids obtained from the head of autumn chum salmon (Oncorhynchus keta). The emulsifying properties of the obtained LPLs were also evaluated. Two different types of substrates of salmon head phospholipids were prepared via silica gel and cold acetone precipitation...
February 1, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/27873320/the-behavioural-homing-response-of-adult-chum-salmon-oncorhynchus-keta-to-amino-acid-profiles
#12
E Y Chen, J B K Leonard, H Ueda
Adult chum salmon Oncorhynchus keta homing behaviour in a two-choice test tank (Y-maze) was monitored using a passive integrated transponder (PIT)-tag system in response to river-specific dissolved free amino-acid (DFAA) profiles and revealed that the majority of O. keta showed a preference for artificial natal-stream water and tended to stay in this maze arm for a longer period; natal-stream water was chosen over a nearby tributary's water, but not when the O. keta were presented with a non-tributary water...
April 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/27859168/sea-louse-parasites-on-juvenile-wild-salmon-in-the-broughton-archipelago-british%C3%A2-columbia-canada
#13
Stephanie J Peacock, Andrew W Bateman, Martin Krkošek, Brendan Connors, Scott Rogers, Lauren Portner, Zephyr Polk, Coady Webb, Alexandra Morton
The global expansion of aquaculture has changed the structure of fish populations in coastal environments, with implications for disease dynamics. In Pacific Canada, farmed salmon act as reservoir hosts for parasites and pathogens, including sea lice (Lepeophtheirus salmonis and Caligus clemensi) that can transmit to migrating wild salmon. Assessing the impact of salmon farms on wild salmon requires regular monitoring of sea-louse infections on both farmed and wild fish. Since 2001, we have collected juvenile pink (Oncorhynchus gorbuscha) and chum (O...
July 2016: Ecology
https://www.readbyqxmd.com/read/27828988/environmental-dna-from-residual-saliva-for-efficient-noninvasive-genetic-monitoring-of-brown-bears-ursus-arctos
#14
Rachel E Wheat, Jennifer M Allen, Sophie D L Miller, Christopher C Wilmers, Taal Levi
Noninvasive genetic sampling is an important tool in wildlife ecology and management, typically relying on hair snaring or scat sampling techniques, but hair snaring is labor and cost intensive, and scats yield relatively low quality DNA. New approaches utilizing environmental DNA (eDNA) may provide supplementary, cost-effective tools for noninvasive genetic sampling. We tested whether eDNA from residual saliva on partially-consumed Pacific salmon (Oncorhynchus spp.) carcasses might yield suitable DNA quality for noninvasive monitoring of brown bears (Ursus arctos)...
2016: PloS One
https://www.readbyqxmd.com/read/27752185/comparison-of-maternal-health-services-and-indicators-in-three-districts-of-the-volta-region-ghana
#15
COMPARATIVE STUDY
Eun Woo Nam, Afisah Zakariah, Festus Adams, Young Suk Jun, Richard Adanu
BACKGROUND: Ghana's maternal mortality ratio continues to decline, but is not expected to meet the Millennium Development Goal (MDG) 5 target. The Ghana Health Service and Ministry of Health have displayed a high commitment to the improvement of maternal health in the country. One of the most recent partnerships directed at this is with the Korea International Cooperation Agency. METHODS: This study was conducted among women between ages 15 and 49 resident in Keta Municipal, Ketu North and Ketu South districts in the Volta Region of Ghana who were pregnant or who had children aged less than five...
September 2016: Ghana Medical Journal
https://www.readbyqxmd.com/read/27748286/carbon-ions-of-different-linear-energy-transfer-let-values-induce-apoptosis-g2-cell-cycle-arrest-in-radio-resistant-melanoma-cells
#16
Žakula Jelena, Korićanac Lela, Keta Otilija, Todorović Danijela, A P Cirrone Giuseppe, Romano Francesco, Cuttone Giacomo, Petrović Ivan, Ristić-Fira Aleksandra
BACKGROUND & OBJECTIVES: The main goal when treating malignancies with radiation is to deprive tumour cells of their reproductive potential. One approach is to induce tumour cell apoptosis. This study was conducted to evaluate the ability of carbon ions ( [12] C) to induce apoptosis and cell cycle arrest in human HTB140 melanoma cells. METHODS: In this in vitro study, human melanoma HTB140 cells were irradiated with the 62 MeV/n carbon ( [12] C) ion beam, having two different linear energy transfer (LET) values: 197 and 382 keV/μm...
May 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/27704180/a-simple-method-for-isolation-and-construction-of-markerless-cyanobacterial-mutants-defective-in-acyl-acyl-carrier-protein-synthetase
#17
Kouji Kojima, Sumie Keta, Kazuma Uesaka, Akihiro Kato, Nobuyuki Takatani, Kunio Ihara, Tatsuo Omata, Makiko Aichi
Cyanobacterial mutants defective in acyl-acyl carrier protein synthetase (Aas) secrete free fatty acids (FFAs) into the external medium and hence have been used for the studies aimed at photosynthetic production of biofuels. While the wild-type strain of Synechocystis sp. PCC 6803 is highly sensitive to exogenously added linolenic acid, mutants defective in the aas gene are known to be resistant to the externally provided fatty acid. In this study, the wild-type Synechocystis cells were shown to be sensitive to lauric, oleic, and linoleic acids as well, and the resistance to these fatty acids was shown to be enhanced by inactivation of the aas gene...
December 2016: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/27633574/comparison-of-human-lung-cancer-cell-radiosensitivity-after-irradiations-with-therapeutic-protons-and-carbon-ions
#18
Otilija D Keta, Danijela V Todorović, Tanja M Bulat, Pablo Ga Cirrone, Francesco Romano, Giacomo Cuttone, Ivan M Petrović, Aleksandra M Ristić Fira
The aim of this study was to investigate effects of irradiations with the therapeutic proton and carbon ion beams in two non-small cell lung cancers, CRL5876 adenocarcinoma and HTB177 large cell lung carcinoma. The DNA damage response dynamics, cell cycle regulation, and cell death pathway activation were followed. Viability of both cell lines was lower after carbon ions compared to the therapeutic proton irradiations. HTB177 cells showed higher recovery than CRL5876 cells seven days following the treatments, but the survival rates of both cell lines were lower after exposure to carbon ions with respect to therapeutic protons...
May 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27627672/sequential-and-simultaneous-immunization-of-rabbits-with-hiv-1-envelope-glycoprotein-sosip-664-trimers-from-clades-a-b-and-c
#19
P J Klasse, Celia C LaBranche, Thomas J Ketas, Gabriel Ozorowski, Albert Cupo, Pavel Pugach, Rajesh P Ringe, Michael Golabek, Marit J van Gils, Miklos Guttman, Kelly K Lee, Ian A Wilson, Salvatore T Butera, Andrew B Ward, David C Montefiori, Rogier W Sanders, John P Moore
We have investigated the immunogenicity in rabbits of native-like, soluble, recombinant SOSIP.664 trimers based on the env genes of four isolates of human immunodeficiency virus type 1 (HIV-1); specifically BG505 (clade A), B41 (clade B), CZA97 (clade C) and DU422 (clade C). The various trimers were delivered either simultaneously (as a mixture of clade A + B trimers) or sequentially over a 73-week period. Autologous, Tier-2 neutralizing antibody (NAb) responses were generated to the clade A and clade B trimers in the bivalent mixture...
September 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27610162/impact-of-pharmaceutical-impurities-in-ecstasy-tablets-gas-chromatography-mass-spectrometry-study
#20
Amir Jalali, Amir Hatamie, Tahere Saferpour, Alireza Khajeamiri, Tahere Safa, Foad Buazar
In this study, a simple and reliable method by gas chromatograph-mass spectrometry (GC-MS) was developed for the fast and regular identification of 3, 4-MDMA impurities in ecstasy tablets. In so doing, 8 samples of impurities were extracted by diethyl ether under alkaline condition and then analyzed by GC-MS. The results revealed high MDMA levels ranging from 37.6% to 57.7%. The GC-MS method showed that unambiguous identification can be achieved for MDMA from 3, 4-methylenedioxyamphetamine (MDA), Amphetamine (AM), methamphetamine (MA) and ketamine (Keta) compounds, respectively...
2016: Iranian Journal of Pharmaceutical Research: IJPR
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