keyword
MENU ▼
Read by QxMD icon Read
search

Vero

keyword
https://www.readbyqxmd.com/read/28214681/a-high-temperature-passaging-attenuated-pseudorabies-vaccine-protects-piglets-completely-against-emerging-prv-variant
#1
Chao Liang, Wu Tong, Hao Zheng, Fei Liu, Jiqiang Wu, Guoxin Li, En-Min Zhou, Guangzhi Tong
Emerging variant of pseudorabies virus (PRV) have evaded the antiviral immunity of commercially available PRV vaccine and have led to PRV outbreaks in Chinese pig farms. Here, we attenuated a PRV variant strain by serial passages in vitro and evaluate the protective efficacy of the attenuated strain as a vaccine candidate. The virulent PRV variant strain JS-2012 was continuously passaged in Vero cells at 40°C and attenuated rapidly. After 90 passages in Vero cells, the passaged virus lost its ability to cause death in 2-week-old piglets...
February 13, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28213871/thieno-2-3-b-pyridine-derivatives-a-new-class-of-antiviral-drugs-against-mayaro-virus
#2
Raquel Amorim, Marcelo Damião Ferreira de Meneses, Julio Cesar Borges, Luiz Carlos da Silva Pinheiro, Lucio Ayres Caldas, Claudio Cesar Cirne-Santos, Marcos Vinícius Palmeira de Mello, Alessandra Mendonça Teles de Souza, Helena Carla Castro, Izabel Christina Nunes de Palmer Paixão, Renata de Mendonça Campos, Ingrid E Bergmann, Viviana Malirat, Alice Maria Rolim Bernardino, Moacyr Alcoforado Rebello, Davis Fernandes Ferreira
Mayaro virus (MAYV) is an arthropod-borne virus and a member of the family Togaviridae, genus Alphavirus. Its infection leads to an acute illness accompanied by long-lasting arthralgia. To date, there are no antiviral drugs or vaccines against infection with MAYV and resources for the prevention or treatment of other alphaviruses are very limited. MAYV has served as a model to study the antiviral potential of several substances on alphavirus replication. In this work we evaluated the antiviral effect of seven new derivatives of thieno[2,3-b]pyridine against MAYV replication in a mammalian cell line...
February 17, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28213544/isolation-and-characterization-of-a-unique-strain-of-rickettsia-parkeri-associated-with-the-hard-tick-dermacentor-parumapertus-neumann-in-the-western-united-states
#3
Christopher D Paddock, Michelle E J Allerdice, Sandor E Karpathy, William L Nicholson, Michael L Levin, Travis C Smith, Tom Becker, Robert J Delph, Robert N Knight, Jana M Ritter, Jeanine H Sanders, Jerome Goddard
In 1953, investigators at the Rocky Mountain Laboratories in Hamilton, Montana, described the isolation of a spotted fever group Rickettsia (SFGR) species from Dermacentor parumapertus collected from black-tailed jackrabbits (Lepus californicus) in northern Nevada. Several decades later, investigators characterized this SFGR by using mouse serotyping methods and determined that it represented a distinct rickettsial serotype, related closely to Rickettsia parkeri; nonetheless, the parumapertus agent was not further characterized or studied...
February 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28212581/the-inhibiting-effect-of-the-transcription-factor-p53-on-dengue-virus-infection-by-activating-the-type-i-interferon
#4
Yan-Ling Hu, Xiao-Shan Li, Shu Xiong, Qiang Ma, Dan Liu, Zhong-Quan Shi, Jing Tang, Xian-Cai Rao, Fu-Quan Hu, Guo-Li Li
To investigate the role of the transcription factor p53 in the course of the dengue virus (DV) infection. The human hepatocellular carcinoma cell strain HepG2 with a low expression level of p53 was built by using the retroviral-mediated RNA interference technology, and was detected by Western blot. The wild group and the interference group were respectively infected by the type 2 DV. The viral titration was detected by the Vero plaque assay, the viral multiplication was detected by the immunofluorescence, the cell apoptosis after virus infection was detected by FCM and the level of IFN-β was analyzed by ELISA...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28196656/a-cdna-clone-launched-platform-for-high-yield-production-of-inactivated-zika-vaccine
#5
Yujiao Yang, Chao Shan, Jing Zou, Antonio E Muruato, Diniz Nunes Bruno, Barbosa de Almeida Medeiros Daniele, Pedro F C Vasconcelos, Shannan L Rossi, Scott C Weaver, Xuping Xie, Pei-Yong Shi
A purified inactivated vaccine (PIV) using the Zika virus (ZIKV) Puerto Rico strain PRVABC59 showed efficacy in monkeys, and is currently in a phase I clinical trial. High-yield manufacture of this PIV is essential for its development and vaccine access. Here we report an infectious cDNA clone-launched platform to maximize its yield. A single NS1 protein substitution (K265E) was identified to increase ZIKV replication on Vero cells (a cell line approved for vaccine production) for both Cambodian FSS13025 and Puerto Rico PRVABC59 strains...
February 6, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28196487/anti-hsv-2-activity-of-terminalia-chebula-retz-extract-and-its-constituents-chebulagic-and-chebulinic-acids
#6
Ajay Kesharwani, Suja Kizhiyedath Polachira, Reshmi Nair, Aakanksha Agarwal, Nripendra Nath Mishra, Satish Kumar Gupta
BACKGROUND: Development of new and effective therapeutics for sexually transmitted herpes simplex virus-2 (HSV-2) infection is important from public health perspective. With an aim to identify natural products from medicinal plants, in the present study, the potential of Terminalia chebula Retz was investigated for its activity against HSV-2. METHODS: Fruits of Terminalia chebula Retz were used to prepare 50% ethanolic extract. In addition, chebulagic acid and chebulinic acid both purified from T...
February 14, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28193191/effective-inhibition-of-mers-cov-infection-by-resveratrol
#7
Shih-Chao Lin, Chi-Tang Ho, Wen-Ho Chuo, Shiming Li, Tony T Wang, Chi-Chen Lin
BACKGROUND: Middle East Respiratory Syndrome coronavirus (MERS-CoV) is an emerging viral pathogen that causes severe morbidity and mortality. Up to date, there is no approved or licensed vaccine or antiviral medicines can be used to treat MERS-CoV-infected patients. Here, we analyzed the antiviral activities of resveratrol, a natural compound found in grape seeds and skin and in red wine, against MERS-CoV infection. METHODS: We performed MTT and neutral red uptake assays to assess the survival rates of MERS-infected Vero E6 cells...
February 13, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28190501/middle-east-respiratory-syndrome-mers-coronavirus-and-dromedaries
#8
REVIEW
Ulrich Wernery, Susanna K P Lau, Patrick C Y Woo
Middle East Respiratory Syndrome (MERS) is a zoonotic viral disease that can be transmitted from dromedaries to human beings. More than 1500 cases of MERS have been reported in human beings to date. Although MERS has been associated with 30% case fatality in human beings, MERS coronavirus (MERS-CoV) infection in dromedaries is usually asymptomatic. In rare cases, dromedaries may develop mild respiratory signs. No MERS-CoV or antibodies against the virus have been detected in camelids other than dromedaries...
February 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28187505/study-of-the-dual-effect-of-gamma-irradiation-and-strontium-substitution-on-bioactivity-cytotoxicity-and-antimicrobial-properties-of-45s5-bioglass
#9
M M Farag, W M Abd-Allah, Hanaa Y A Ahmed
In this work, we studied simultaneous effect of gamma irradiation and SrO substitution for Na2 O on bioactivity, cytotoxicity and antimicrobial properties of 45S5 glass. Gamma irradiation was mainly introduced in this work as an effective sterilizing technique, improvement of bulk properties and surface modification of glass. Where, gamma irradiation is considered a modifier for glass network due to generation of defects resulted from this irradiation. Furthermore, SrO was introduced into the glass structure in place of Na2 O in order to reduce a probable toxic effect of Na2 O for surrounding tissue by decreasing its percentage...
February 10, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28185139/rescue-of-a-recombinant-newcastle-disease-virus-strain-r2b-expressing-green-fluorescent-protein
#10
Madhan Mohan Chellappa, Sohini Dey, Satish Gaikwad, Dinesh C Pathak, Vikram N Vakharia
Newcastle disease virus (NDV), strain R2B is a mesogenic vaccine strain used for booster vaccination in chickens against Newcastle disease in India and many south East Asian countries. A full-length cDNA clone of the virus was generated by ligating eight overlapping fragments generated by reverse transcription polymerase chain reaction having unique restriction enzyme sites within them. This full-length cDNA clone was flanked by hammerhead ribozyme and hepatitis delta virus ribozyme sequences. Defined genetic markers were introduced into the NDV genome to differentiate the rescued virus from the parent virus...
February 9, 2017: Virus Genes
https://www.readbyqxmd.com/read/28177047/linalool-a-piper-aduncum-essential-oil-component-has-selective-activity-against-trypanosoma-cruzi-trypomastigote-forms-at-4%C3%A2-c
#11
Luz Helena Villamizar, Maria das Graças Cardoso, Juliana de Andrade, Maria Luisa Teixeira, Maurilio José Soares
BACKGROUND: Recent studies showed that essential oils from different pepper species (Piper spp.) have promising leishmanicidal and trypanocidal activities. OBJECTIVES: In search for natural compounds against Trypanosoma cruzi, different forms of the parasite were incubated for 24 h at 28ºC or 4ºC with Piper aduncum essential oil (PaEO) or its main constituents linalool and nerolidol. METHODS: PaEO chemical composition was obtained by GC-MS...
February 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28175983/glycyrrhizin-inhibits-porcine-epidemic-diarrhea-virus-infection-and-attenuates-the-proinflammatory-responses-by-inhibition-of-high-mobility-group-box-1-protein
#12
Chang-Chao Huan, Hua-Xia Wang, Xiang-Xiang Sheng, Rui Wang, Xin Wang, Xiang Mao
Porcine epidemic diarrhea (PED), caused by porcine epidemic diarrhea virus (PEDV) infection, leads to significant economic losses in the swine industry worldwide. In our studies, we found that glycyrrhizin, the major component of licorice root extracts, could moderately inhibit PEDV infection in Vero cells, when analyzed by western blot, qRT-PCR and a plaque formation assay. We also revealed that glycyrrhizin inhibited the entry and replication of PEDV. In addition, we demonstrated that glycyrrhizin decreased the mRNA levels of proinflammatory cytokines...
February 7, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28174115/antioxidant-and-antigenotoxic-potential-of-ramaria-largentii-marr-d-e-stuntz-a-wild-edible-mushroom-collected-from-northeast-romania
#13
Ana Clara Aprotosoaie, Daniela Elena Zavastin, Cosmin-Teodor Mihai, Gabriela Voichita, Daniela Gherghel, Mihaela Silion, Adriana Trifan, Anca Miron
Ramaria largentii Marr & D. E. Stuntz (orange coral mushroom) is a wild edible mushroom whose chemical composition and bioactivity have not been investigated. Herein, we present a study on the phenolic constituents, antioxidant and antigenotoxic effects of a hydromethanolic extract of the fruiting bodies. Total phenolic content, estimated by Folin-Ciocalteu assay, was found to be 42.33 ± 0.18 mg GAE/g. Protocatechuic and vanillic acids were detected by HPLC-DAD-ESI-MS. The extract showed good free radical scavenging and reducing capacities (EC50 = 64...
February 4, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28173977/identification-of-a-candidate-standard-strain-of-severe-fever-with-thrombocytopenia-syndrome-virus-for-vaccine-quality-control-in-china-using-a-cross-neutralization-assay
#14
Zheng Jia, Xiaohong Wu, Ling Wang, Xiuling Li, Xinxian Dai, Mifang Liang, Shouchun Cao, Yan Kong, Jingjing Liu, Yuhua Li, Junzhi Wang
Severe fever with thrombocytopenia syndrome (SFTS) is caused by a phlebovirus of the Bunyaviridae family, which is designated as SFTS virus (SFTSV). To our knowledge, no efficient SFTSV vaccine exists. Here, we report the identification of a standard virus strain for the eight major SFTSV strains circulating in China for use in evaluating the SFTSV vaccine. Rabbits were immunized with the SFTSV strains and the cross-neutralization capacities of SFTSV anti-sera were determined in microculture cytopathic effect (CPE)-inhibition assays...
February 4, 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28168856/biophysical-characterization-and-structural-determination-of-the-potent-cytotoxic-psathyrella-asperospora-lectin
#15
João P Ribeiro, Mohamed Ali Abol Hassan, Razina Rouf, Evelin Tiralongo, Tom W May, Christopher J Day, Anne Imberty, Joe Tiralongo, Annabelle Varrot
A lectin with strong cytotoxic effect on human colon cancer HT29 and monkey kidney VERO cells was recently identified from the Australian indigenous mushroom Psathyrella asperospora and named PAL. We herein present its biochemical and structural analysis using a multidisciplinary approach. Glycan arrays revealed binding preference towards N-acetylglucosamine (GlcNAc) and, to a lesser extent, towards sialic acid (Neu5Ac). Submicromolar and millimolar affinity was measured by surface plasmon resonance for GlcNAc and NeuAc, respectively...
February 7, 2017: Proteins
https://www.readbyqxmd.com/read/28166822/disruption-of-the-m949_rs01915-gene-changed-the-bacterial-lipopolysaccharide-pattern-pathogenicity-and-gene-expression-of-riemerella-anatipestifer
#16
Yafeng Dou, Xiaolan Wang, Guijing Yu, Shaohui Wang, Mingxing Tian, Jingjing Qi, Tao Li, Chan Ding, Shengqing Yu
Riemerella anatipestifer is an important pathogen that causes septicemia anserum exsudativa in ducks. Lipopolysaccharide (LPS) is considered to be a major virulence factor of R. anatipestifer. To identify genes involved in LPS biosynthesis, we screened a library of random Tn4351 transposon mutants using a monoclonal antibody against R. anatipestifer serotype 1 LPS (anti-LPS MAb). A mutant strain RA1067 which lost the reactivity in an indirect ELISA was obtained. Southern blot and sequencing analyses indicated a single Tn4351 was inserted at 116 bp in the M949_RS01915 gene in the RA1067 chromosomal DNA...
February 6, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28152487/a-heparin-functionalized-carbon-nanotube-based-affinity-biosensor-for-dengue-virus
#17
Daniel Wasik, Ashok Mulchandani, Marylynn V Yates
Dengue virus is an arthropod-borne virus transmitted primarily by Aedes mosquitos and is major cause of disease in tropical and subtropical regions. Colloquially known as Dengue Fever, infection can cause hemorrhagic disorders and death in humans and non-human primates. We report a novel electronic biosensor based on a single-walled carbon nanotube network chemiresistive transducer that is functionalized with heparin for low-cost, label-free, ultra-sensitive, and rapid detection of whole dengue virus (DENV)...
January 10, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28150811/size-dependent-cellular-uptake-mechanism-and-cytotoxicity-toward-calcium-oxalate-on-vero-cells
#18
Xin-Yuan Sun, Qiong-Zhi Gan, Jian-Ming Ouyang
Urinary crystals with various sizes are present in healthy individuals and patients with kidney stone; however, the cellular uptake mechanism of calcium oxalate of various sizes has not been elucidated. This study aims to compare the internalization of nano-/micron-sized (50 nm, 100 nm, and 1 μm) calcium oxalate monohydrate (COM) and dihydrate (COD) crystals in African green monkey renal epithelial (Vero) cells. The internalization and adhesion of COM and COD crystals to Vero cells were enhanced with decreasing crystal size...
February 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28149465/citotoxicity-evaluation-of-three-dental-adhesives-on-vero-cells-in-vitro
#19
Raisa-Queiroz Catunda, Jeymesson-Raphael-Cardoso Vieira, Erwelly-Barros de Oliveira, Eliete-Cavalcanti da Silva, Veruska-Lima-Moura Brasil, Danyel-Elias-da Cruz Perez
BACKGROUND: To evaluate, in vitro, the potential cytotoxicity of three different dental adhesives systems (Adper Single Bond 2 -SB, Silorane System Adhesive Bond -SSAB and Single Bond Universal -SBU) on cultivated Vero cells after different contact times. MATERIAL AND METHODS: The cells were cultured in a concentration of 2 x 105 cells/mL for 24h and grown to sub-confluent monolayers. VERO cells were exposed to 25µl of conditioned extracts obtained from 24h, 48h and 72h immersion of adhesive samples in culture medium (DMEM), immediately after polymerization...
January 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28148263/potency-and-selectivity-indices-of-acetone-leaf-extracts-of-nine-selected-south-african-trees-against-six-opportunistic-enterobacteriaceae-isolates-from-commercial-chicken-eggs
#20
Ishaku L Elisha, Alexander R Jambalang, Francien S Botha, Elna M Buys, Lyndy J McGaw, Jacobus N Eloff
BACKGROUND: The rise in antimicrobial resistance in a plethora of nosocomial and opportunistic bacterial pathogens often isolated from commercial eggs, poses a serious public health concern. The existence of these contaminants may also serve as a drawback in the current efforts of improving the well-being of immunocompromised patients. The aim of this study was to determine the efficacy of plant extracts that had good activity on Escherichia coli in previous word on pathogens isolated from eggs for possible use in combating pathogens from eggs...
February 2, 2017: BMC Complementary and Alternative Medicine
keyword
keyword
102514
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"