Search results for: Nucleotide
#33091664 2020/10/07 To Up
The association of tumor necrosis factor alpha, lymphotoxin alpha, tumor necrosis factor receptor 1 and tumor necrosis factor receptor 2 gene polymorphisms and serum levels with periodontitis and type 2 diabetes in Serbian population.Aiming to show that periodontitis (PD) and type 2 diabetes (T2D) are bidirectionally related and potentially linked by inflammatory cytokines, we searched for association between -308 G/A Tumor necrosis factor-alpha (TNFα), +252A/G Lymphotoxin-alpha (LTα), +36A/G Tumor necrosis factor receptor 1 (TNFR1) and +676 T/G tumor necrosis factor receptor 2 (TNFR2) single nucleotide polymorphisms (SNPs) and: risk of PD or PD + T2D; periodontitis parameters in PD and PD + T2D; serum levels of cytokines/their receptors. Relationship between periodontal inflammation and serum cytokine/receptor levels was also assessed.
Sanja Matic Petrovic, Nadja Nikolic, Bosko Toljic, Jelena Arambasic-Jovanovic, Biljana Milicic, Tanja Milicic, Aleksandra Jotic, Melita Vidakovic, Jelena Milasin, Ana Pucar
1460 related Products with: The association of tumor necrosis factor alpha, lymphotoxin alpha, tumor necrosis factor receptor 1 and tumor necrosis factor receptor 2 gene polymorphisms and serum levels with periodontitis and type 2 diabetes in Serbian population.0.1 mg10ug96T5ug1 kit(96 Wells)5ug20 5ug96T 96T/Kit 1 mg1 kit(96 Wells)
#33091630 2020/10/16 To Up
Characterization of GASA-1, a new vaccine candidate antigen of Babesia bovis.Surface proteins bound to the cell membrane by glycosylphosphatidylinositol (GPI) anchors are considered essential for the survival of pathogenic protozoans. In the case of the tick-transmitted hemoparasite Babesia bovis, the most virulent causative agent of bovine babesiosis, the GPI-anchored proteome was recently unraveled by an in silico approach. In this work, one of the identified proteins, GASA-1 (GPI-Anchored Surface Antigen-1), was thoroughly characterized. GASA-1 is 179 aa long and has the characteristic features of a GPI-anchored protein, including a signal peptide, a hydrophilic core and a hydrophobic tail that harbors a GPI anchor signal. Transcriptomic analysis shows that it is expressed in pathogenic and attenuated B. bovis strains. Notably, the gasa-1 gene has syntenic counterparts in B. bigemina and B. ovata, which also encode GPI-anchored proteins. This is highly unusual since all piroplasmid GPI-anchored proteins described so far have been found to be species-specific. Sequencing of gasa-1 alleles from B. bovis geographical isolates originating from Argentina, USA, Brazil, Mexico and Australia showed over 98 % identity in both nucleotide and amino acid sequences. A recombinant form of GASA-1 (rGASA-1) was generated in E. coli and anti-rGASA-1 antibodies were raised in mice. Fixed and live immunofluorescence assays showed that GASA-1 is expressed in in vitro cultured B. bovis merozoites and surface-exposed. Moreover, incubation of B. bovis in vitro cultures with anti-GASA-1 antibodies partially, but significantly, reduced erythrocyte invasion, indicating that this protein bears neutralization-sensitive antibody epitopes. Splenocytes of rGASA-1-inoculated mice showed a specific proliferative response when exposed to the recombinant protein, indicating that GASA-1 bears T-cell epitopes. Finally, sera from a group of B. bovis-infected cattle reacted with the recombinant protein, demonstrating that GASA-1 is expressed during natural infection of bovines with B. bovis, and suggesting that it is immunodominant. The high degree of conservation among B. bovis isolates and the presence of syntenic genes in other Babesia species suggest a relevant role of GASA-1 and GASA-1-like proteins for parasite survival, especially considering that, due to their surface location, they are exposed to the selection pressure of the host immune system. The highlighted features of GASA-1 make it an interesting candidate for the development of vaccines against bovine babesiosis.
Daniela A Flores, Anabel E Rodriguez, Mariela L Tomazic, Susana Torioni de Echaide, Ignacio Echaide, Patricia Zamorano, Cecilia Langellotti, Flabio R Araujo, Peter Rolls, Leonhard Schnittger, Monica Florin-Christensen
2942 related Products with: Characterization of GASA-1, a new vaccine candidate antigen of Babesia bovis.6 ml Ready-to-use 1 mL100 50ul (1mg/ml)0.1 mg10.1ml (1mg/ml)50ul100 ug100 µg96T0.1ml
#33091590 2020/10/19 To Up
Molecular characterization, pathogen-host interaction pathway and in silico approaches for vaccine design against COVID-19.COVID-19 has forsaken the world because of extremely high infection rates and high mortality rates. At present we have neither medicine nor vaccine to prevent this pandemic. Lockdowns, curfews, isolations, quarantines, and social distancing are the only ways to mitigate their infection. This is badly affecting the mental health of people. Hence, there is an urgent need to address this issue. Coronavirus disease 2019 (COVID-19) is caused by a novel Betacorona virus named SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) which has emerged in the city of Wuhan in China and declared a pandemic by WHO since it affected almost all the countries the world, infected 24,182,030 people and caused 825,798 death as per data are compiled from John Hopkins University (JHU). The genome of SARS-CoV-2 has a single-stranded positive (+) sense RNA of ∼30 kb nucleotides. Phylogenetic analysis reveals that SARS-CoV-2 shares the highest nucleotide sequence similarity (∼79%) with SARS-CoV. Envelope and nucleocapsids are two evolutionary conserved regions of SARS-CoV-2 having a sequence identity of about 96% and 89.6%, respectively as compared to SARS-CoV. The characterization of SARS-CoV-2 is based on polymerase chain reaction (PCR) and metagenomic next-generation sequencing. Transmission of this virus in the human occurs through the respiratory tract and decreases the respiration efficiency of lungs. Humans are generally susceptible to SARS-CoV-2 with an incubation period of 2-14 days. The virus first infects the lower airway and bind with angiotensin-converting enzyme 2 (ACE2) of alveolar epithelial cells. Due to the unavailability of drugs or vaccines, it is very urgent to design potential vaccines or drugs for COVID-19. Reverse vaccinology and immunoinformatic play an important role in designing potential vaccines against SARS-CoV-2. The suitable vaccine selects for SARS-CoV-2 based on binding energy between the target protein and the designed vaccine. The stability and activity of the designed vaccine can be estimated by using molecular docking and dynamic simulation approaches. This review mainly focused on the brief up to date information about COVID-19, molecular characterization, pathogen-host interaction pathways involved during COVID-19 infection. It also covers potential vaccine design against COVID-19 by using various computational approaches. SARS-CoV-2 enters brain tissue through the different pathway and harm human's brain and causes severe neurological disruption.
Nidhi Singh, SachchidaNand Rai, Veer Singh, Mohan P Singh
1923 related Products with: Molecular characterization, pathogen-host interaction pathway and in silico approaches for vaccine design against COVID-19.2 Pieces/Box1 Set1 Set1 Set200ul1 Set1 Set1 Set1 Set0.1ml1 Set1 Set
#33091215 2020/10/22 To Up
Can domestic pigeon be a potential carrier of zoonotic Salmonella?Salmonellosis is one of the most important bacterial diseases in pigeons. This study aimed to estimate the prevalence of Salmonella spp. in domestic pigeons (Columba livia f. domestica) in Poland, its antimicrobial susceptibility (both phenotypic and genotypic), and its capability for biofilm formation. The presence of selected virulence genes, nucleotide homology of selected genes, and susceptibility to bacteriophages were investigated as well. From the 585 pigeons tested, 5.47% turned out positive. All isolated strains were recognized as Salmonella enterica ser. Typhimurium. The asymptomatic pigeons were carriers of 37.5% of the isolates. The dominant variants were: 1,4,,12,:i:1,2 (53.13%) and 1,4,,12,:-:- (31.25%). Most of the strains analyzed showed the ability to produce biofilm after 24 and 48 hours of incubation (59.38 % and 53.13 %, respectively). Over 90% of the strains were confirmed for lpfA, agafA, invA, sivH, and avrA virulence genes. Also, of the thirteen antimicrobial susceptibility genes, the following were confirmed: sul1, tet(A), bla , floR, strA, and strB. The most common were the strB (18%) and tet(A) (12%) genes that are responsible for coding resistance to aminoglycosides and tetracyclines, respectively. Most of the strains were phenotypically resistant to oxytetracycline (46.88%), neomycin (53.13%), and tylosin (100%). The susceptibility of the investigated Salmonella strains to the bacteriophages was between 33% and 100%. MLST, PCR MP, and ERIC PCR analyses indicated a very high genetic similarity of the investigated strains (over 99%). Results of our study indicate that Salmonella enterica ser. Typhimurium is still an important agent in domestic pigeons and that its antimicrobial resistance increases. Alarming is also the confirmation of a single-phase variant 1,4,,12:i,-, which could have increased virulence and multi-drug resistance encoded on the plasmid. Most importantly, however, such strains have been isolated from humans with clinical symptoms of Salmonella infection.
Edyta Kaczorek-Łukowska, Patrycja Sowińska, Antoni Franaszek, Daria Dziewulska, Joanna Małaczewska, Tomasz Stenzel100.00 ug100 µg100 100ul1 mg
#33091128 2020/10/22 To Up
Retraction: AKAP12 mediates PKA-induced phosphorylation of ATR to enhance nucleotide excision repair.
Stuart G Jarrett, Erin M Wolf Horrell, John A D'Orazio
1099 related Products with: Retraction: AKAP12 mediates PKA-induced phosphorylation of ATR to enhance nucleotide excision repair.50 µg1 module5 mg1 Set1 Set25 mg0.5mgML100ug Lyophilized1 Set 50G500 mg
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#33090970 2020/10/22 To Up
Long-term outcomes in Chinese patients with chronic hepatitis B receiving nucleoside/nucleotide analogue therapy in real-world clinical practice: 5-year results from the EVOLVE study.In China, the optimal management of individuals living with chronic HBV infection remains an unmet need. The EVOLVE was a 5-year prospective, longitudinal, observational study that compared the clinical outcomes in treatment-naïve CHB patients receiving entecavir (ETV) or lamivudine (LAM)-based therapies.
Jidong Jia, Jia Shang, Hong Tang, Jiaji Jiang, Qin Ning, Xiaoguang Dou, Shuqin Zhang, Mingxiang Zhang, Tao Han, Deming Tan, Xinmin Zhou, Guoliang Chen, Jifang Sheng, Zhijun Su, Haijun Chen, Erhei Dai, Yinong Ye, Ying Guo, Yuefei Shen, Jing Yuan, Zhen Wei, Siyun Zhu,
1978 related Products with: Long-term outcomes in Chinese patients with chronic hepatitis B receiving nucleoside/nucleotide analogue therapy in real-world clinical practice: 5-year results from the EVOLVE study.
#33090949 2020/10/22 To Up
f.a., sp. nov., a novel ascomycetous yeast species isolated from grapes.During a study of yeast diversity in Azorean vineyards, four strains were isolated which were found to represent a novel yeast species based on the sequences of the internal transcribed spacer (ITS) region (ITS1-5.8S-ITS2) and of the D1/D2 domain of the large subunit (LSU) rRNA gene, together with their physiological characteristics. An additional strain isolated from in Italy had identical D1/D2 sequences and very similar ITS regions (five nucleotide substitutions) to the Azorean strains. Phylogenetic analysis using sequences of the ITS region and D1/D2 domain showed that the five strains are closely related to , although with 56 nucleotide differences in the D2 domain. Intraspecies variation revealed between two and five nucleotide differences, considering the five strains of . Some phenotypic discrepancies support the separation of the new species from their closely related ones, such as the inability to grow at temperatures above 35 °C, to produce acetic acid and the capacity to assimilate starch. Neither conjugations nor ascospore formation were observed in any of the strains. The name f.a., sp. nov., is proposed to accommodate the above noted five strains (holotype, CBS 16465; MycoBank no., MB 835794).
João Drumonde-Neves, Neža Čadež, Yazmid Reyes Domínguez, Andreas Gallmetzer, Dorit Schuller, Teresa Lima, Célia Pais, Ricardo Franco-Duarte
1088 related Products with: f.a., sp. nov., a novel ascomycetous yeast species isolated from grapes.50 ug 50ul 100ul 100ul 100ul 100ul 100ul 100ul 100ul 100ul50 ug 50 ug
#33090769 2020/10/22 To Up
Enzymatic Formation of an Artificial Base Pair Using a Modified Purine Nucleoside Triphosphate.The expansion of the genetic alphabet with additional, unnatural base pairs (UBPs) is an important and long-standing goal in synthetic biology. Nucleotides acting as ligands for the coordination of metal cations have advanced as promising candidates for such an expansion of the genetic alphabet. However, the inclusion of artificial metal base pairs in nucleic acids mainly relies on solid-phase synthesis approaches, and very little is known about polymerase-mediated synthesis. Herein, we report the selective and high yielding enzymatic construction of a silver-mediated base pair (dIm-Ag-dPur) as well as a two-step protocol for the synthesis of DNA duplexes containing such an artificial metal base pair. Guided by DFT calculations, we also shed light into the mechanism of formation of this artificial base pair as well as into the structural and energetic preferences. The enzymatic synthesis of the dIm-Ag-dPur artificial metal base pair provides valuable insights for the design of future, more potent systems aiming at expanding the genetic alphabet.
Marie Flamme, Pascal Röthlisberger, Fabienne Levi-Acobas, Mohit Chawla, Romina Oliva, Luigi Cavallo, Gilles Gasser, Philippe Marlière, Piet Herdewijn, Marcel Hollenstein
1707 related Products with: Enzymatic Formation of an Artificial Base Pair Using a Modified Purine Nucleoside Triphosphate.1 Set1 Set1 Set100ug1 Set1 Set1 Set1 Set1 Set1 Set1 Set1 Set
#33090713 2020/10/09 To Up
Identification of the novel HLA-A*01:01:01:53 allele generated by recombination in intron 1.Identification of the novel HLA-A*01:01:01:53 allele that differs from HLA-A*01:01:01:01 at four positions in intron 1. This article is protected by copyright. All rights reserved.
Vinícius N Stelet, Rafael F Cita, Maristela F Mendes, Matilde Romero, Eliana Abdelhay
2880 related Products with: Identification of the novel HLA-A*01:01:01:53 allele generated by recombination in intron 1.1400Tests25 mg
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