scholarly journals Nucleic Acid Sequence Composition of the Oxford – AstraZeneca Vaccine ChAdOx1 nCoV-19 (AZD1222, Vaxzevria)

2021 ◽  
Author(s):  
Marco T. Radukic ◽  
Dinh To Le ◽  
Kristian M. Müller
Keyword(s):  
Nucleic Acid ◽  
Side Effects ◽  
Vaccine Dose ◽  
Reference Sequence ◽  
Published Data ◽  
Nanopore Sequencing ◽  
Genetic Purity ◽  
Sequence Composition ◽  
Escape Mutants ◽  
Full Vector

Abstract The vaccine ChAdOx1 nCoV-19 has been widely used, but its purity has been disputed because of rare side effects. We used Nanopore sequencing to assess the sequence and genetic purity of a vaccine dose. As we were lacking a reference sequence for the antigen cassette, we provide the obtained annotated sequence of the full vector to aid further studies on this topic. Our sample adhered to the published data, was highly pure (>99.97%), and no copy of the E1 gene as a predictor on replication-competent escape mutants was found.

scholarly journals Antibody response to immunization with influenza A/USSR/77 (H1N1) virus in young individuals primed or unprimed for A/New Jersey/76 (H1N1) virus

1981 ◽  
Vol 87 (2) ◽  
pp. 201-209 ◽  
Author(s):  
N. Masurel ◽  
P. Ophof ◽  
P. de Jong
Keyword(s):  
New Jersey ◽  
Side Effects ◽  
Antibody Response ◽  
Virus Vaccine ◽  
Influenza A ◽  
H1n1 Virus ◽  
Vaccine Dose ◽  
Booster Vaccination ◽  
Booster Immunization ◽  
Group A

SummaryA group of 269 pupils of the Harbour and Transport Training Institute in Rotterdam (group A), aged 13–20 years, and of 109 patients of the Dr Mr Willem van den Bergh Foundation at Noordwijk (group B), aged 11–21 years, were immunized with a whole virus vaccine containing 10, 20, or 40 μg HA of A/USSR/92/77 (H1N1) influenza virus. A booster vaccination was administered 6 weeks later with 20 μg HA of the same virus. Many of the participants had been immunized during the two preceding years with a whole virus vaccine containing A/New Jersey/8/76 (H1N1) (A/NJ/76) virus. The side-effects, mostly of a moderate nature, increased with the dose of virus in the vaccine. In group A side effects were least frequent in the vaccinees who had never received A/NJ/76 vaccine. A single dose of A/USSR/77 vaccine did not produce satisfactory levels of homologous antibodies. After booster immunization with 20 μg HA of A/USSR/77 virus participants showed a higher homologous antibody response in all vaccine-dose groups if they had not been immunized with A/NJ/76 virus in previous years. After primary and especially after booster immunization with A/USSR/77 virus, a very high response against A/NJ/76 virus and adequate levels of A/NJ/76 antibody were found in participants who had been immunized previously with A/NJ/76 virus. Those who had not been immunized with this virus previously showed no or a very low antibody response to A/NJ/76 virus.

scholarly journals Introducing ribosomal tandem repeat barcoding for fungi

2018 ◽  
Author(s):  
Christian Wurzbacher ◽  
Ellen Larsson ◽  
Johan Bengtsson-Palme ◽  
Silke Van den Wyngaert ◽  
Sten Svantesson ◽  
...  
Keyword(s):  
Large Scale ◽  
Tandem Repeats ◽  
Reference Data ◽  
Reference Sequence ◽  
Herbarium Specimens ◽  
Nanopore Sequencing ◽  
Desktop Computer ◽  
Third Generation Sequencing ◽  
Ribosomal Operon ◽  
Sequencing Facility

AbstractSequence analysis of the various ribosomal genetic markers is the dominant molecular method for identification and description of fungi. However, there is little agreement on what ribosomal markers should be used, and research groups utilize different markers depending on what fungal groups are targeted. New environmental fungal lineages known only from DNA data reveal significant gaps in the coverage of the fungal kingdom both in terms of taxonomy and marker coverage in the reference sequence databases. In order to integrate references covering all of the ribosomal markers, we present three sets of general primers that allow the amplification of the complete ribosomal operon from the ribosomal tandem repeats. The primers cover all ribosomal markers (ETS, SSU, ITS1, 5.8S, ITS2, LSU, and IGS) from the 5’ end of the ribosomal operon all the way to the 3’ end. We coupled these primers successfully with third generation sequencing (PacBio and Nanopore sequencing) to showcase our approach on authentic fungal herbarium specimens. In particular, we were able to generate high-quality reference data with Nanopore sequencing in a high-throughput manner, showing that the generation of reference data can be achieved on a regular desktop computer without the need for a large-scale sequencing facility. The quality of the Nanopore generated sequences was 99.85 %, which is comparable with the 99.78 % accuracy described for Sanger sequencing. With this work, we hope to stimulate the generation of a new comprehensive standard of ribosomal reference data with the ultimate aim to close the huge gaps in our reference datasets.

Comparison of Oral Prednisolone, Budesonide and Probiotics in the Treatment of Canine Inflammatory Bowel Disease

2021 ◽  
Author(s):  
M. Sandhya Bhavani ◽  
S. Kavitha ◽  
B. Gowri ◽  
Abid Ali Bhat
Keyword(s):  
Inflammatory Bowel Disease ◽  
Side Effects ◽  
Bowel Disease ◽  
Activity Index ◽  
Disease Activity Index ◽  
Oral Prednisolone ◽  
Published Data ◽  
Inflammatory Bowel ◽  
Faecal Score

Background: Inflammatory bowel disease (IBD) is the common cause of chronic gastrointestinal signs in dogs. The treatment possesses numerous difficulties due to the idiopathic nature of the disease. Conventional steroid therapy usually produces side effects on long term usage. Thus, there is a need for alternative therapies. When compared to human medicine, there is no published data on the use of budesonide and probiotic in the treatment of canine IBD in India. The present study was proposed to compare oral prednisolone, budesonide and probiotics in the management of canine inflammatory bowel disease. Methods: Thirty dogs with idiopathic IBD were selected and randomly grouped. They were subjected to therapy involving prednisolone, budesonide or probiotics. Clinical assessment was performed by calculation of the post treatment Clinical Inflammatory Bowel Disease Activity Index (CIBDAI) score, faecal score and endoscopy. Biochemical analysis of alkaline phosphatase and alanine transaminase were done to record side effects of steroid administration. Result: It was observed from the present study that both prednisolone and budesonide are equally effective in the management of IBD in dogs. Probiotics were found to be less effective when compared to prednisolone and budesonide in the treatment of IBD.

Valproic Acid: A Different View

PEDIATRICS ◽  
1982 ◽  
Vol 70 (2) ◽  
pp. 331-331
Author(s):  
J. Kiffin Penry
Keyword(s):  
Valproic Acid ◽  
Side Effects ◽  
American Academy ◽  
Antiepileptic Drug ◽  
Antiepileptic Drugs ◽  
Published Data ◽  
American Academy Of Pediatrics

The Committee on Drugs of the American Academy of Pediatrics has prepared a statement on the benefits and risks of the antiepileptic drug valproic acid; this statement appears in this issue of Pediatrics (70:316, 1982). This report is extensive and objective in its review of published data on valproic acid, and is of great value to practicing pediatricians for that reason. However, the review fails to place vaiproic acid in perspective with other marketed antiepileptic drugs, which in many instances have equally serious side effects.

scholarly journals Don't Get Wound Up: Revised Fluoroquinolone Breakpoints for Enterobacteriaceae and Pseudomonas aeruginosa

2019 ◽  
Vol 57 (7) ◽  
Author(s):  
Tam T. Van ◽  
Emi Minejima ◽  
Chiao An Chiu ◽  
Susan M. Butler-Wu
Keyword(s):  
United States ◽  
Pseudomonas Aeruginosa ◽  
Side Effects ◽  
Antimicrobial Agents ◽  
Susceptibility Testing ◽  
The United States ◽  
Published Data ◽  
Content Type ◽  
Clinical Laboratories ◽  
Level Resistance

ABSTRACT Fluoroquinolones remain some of the more commonly prescribed antimicrobial agents in the United States, despite the wide array of reported side effects that are associated with their use. In 2019, the Clinical and Laboratory Standards Institute revised the fluoroquinolone antimicrobial susceptibility testing breakpoints for both Enterobacteriaceae and Pseudomonas aeruginosa. This breakpoint revision was deemed necessary on the basis of pharmacokinetic and pharmacodynamic analyses suggesting that the previous breakpoints were too high, in addition to the inability of the previous breakpoints to detect low-level resistance to this antibiotic class. In this minireview, we review the published data in support of this revision, as well as the potential challenges that these breakpoint revisions are likely to pose for clinical laboratories.

Genetic polymorphisms of EGF 5'-UTR in patients with glioma: A possible predictive marker of outcome.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. e13009-e13009
Author(s):  
Emanuela Vattemi ◽  
Giovanna Cipollini ◽  
Cristina Dealis ◽  
Lorena Rossi ◽  
Susanne Baier ◽  
...  
Keyword(s):  
Cancer Progression ◽  
Direct Sequencing ◽  
Predictive Marker ◽  
Reference Sequence ◽  
Published Data ◽  
Sequencing Method ◽  
Number Of Patients ◽  
Predictive Role ◽  
Epidermal Growth

e13009 Background: Epidermal growth factor (EGF) plays an important role in carcinogenesis. An adenine (A) to guanine (G) single nucleotide polymorphism at position 61 in the 5'-untranslated region (5'-UTR) of the EGF gene has been found to be associated with levels of EGF production and contribute to the risk of glioma. However, published data are contradictory. EGF +61G/A polymorphism may contribute to the risk of glioma in different ethnic group. Patients with glioma and GG genotype have been reported to have a risk of poorer otucome than patients with AA genotype. Purpose of this study is to investigate the potential role of this polymorphism in cancer progression and its role as predictive marker of outcome in glioma caucasian patients. Methods: EGF 61A/G polymorphism (rs4444903) was analyzed in glioma patients and was determined by means of Polymerase Chain Reaction and Direct Sequencing method (GenBank reference sequence-accession no. AC005509) from blood samples. Association of this genetic polymorphism with clinical and pathological data of patients was evaluated. Results: We investigated EGF +61G/A polymorphism in 24 glioma patients . EGF +61G allele has been found in 67% of glioma patients (25% G/G genotype and 42% A/G genotype). In astrocytomas, EGF +61G allele represents a 83% frequency; in glioblastomas and in oligodendrogliomas, EGF +61G allele frequency represents respectively 71% and 50%. In WHO IV gliomas, the EGF +61G allele represents a 63% frequency, (27% G/G and 36% A/G ), in WHO III gliomas a 77% frequency (33% G/G and 44% A/G ) and in WHO II gliomas a 50% frequency (100% A/G ). Median PFS of glioblastoma patients was 9 months. 83% of glioblastoma patients with a relapsing disease showed the G/G and A/G genotype. No difference was detected in the others histotypes. Conclusions: Our data conferm previous studies which reported G allele as a risk factor for glioma in Caucasian. G/A and G/G genotypes seem to be more rappresentative in high grade gliomas . Despite limited number of patients, our study supports the predictive role of EGF 61 A/G polymorphism in GBM. Additional large studies are warranted to confirm the role of EGF polymorphism as indipendent prognostic factor in glioma.

Side effects ofRicinus lectin (RCA 120) on nucleic acid synthesis in chick embryo fibroblasts

1983 ◽  
Vol 39 (2) ◽  
pp. 184-185 ◽  
Author(s):  
B. Bernard ◽  
C. Berjonneau ◽  
P. Codogno ◽  
J. Font ◽  
M. Aubery
Keyword(s):  
Nucleic Acid ◽  
Side Effects ◽  
Chick Embryo ◽  
Acid Synthesis ◽  
Nucleic Acid Synthesis ◽  
Embryo Fibroblasts

scholarly journals Genomic DNA preparation enabling multiple replicate reads for accurate nanopore sequencing

2015 ◽  
Author(s):  
Dimitra Tsavachidou
Keyword(s):  
Nucleic Acid ◽  
Error Rates ◽  
Nanopore Sequencing ◽  
Acid Molecule ◽  
Single Nucleotide ◽  
Nucleic Acid Molecule ◽  
Dna Strands ◽  
Nucleotide Resolution ◽  
Single Nucleotide Resolution ◽  
Sequencing Procedure

Sequencing at single-nucleotide resolution using nanopore devices is performed with reported error rates 10.5-20.7% (Ip et al., 2015). Since errors occur randomly during sequencing, repeating the sequencing procedure for the same DNA strands several times can generate sequencing results based on consensus derived from replicate readings, thus reducing overall error rates. The method presented in this manuscript constructs copies of a nucleic acid molecule that are consecutively connected to the nucleic acid molecule. Such copies are useful because they can be sequenced by a nanopore device, enabling replicate reads, thus improving overall sequencing accuracy.

scholarly journals Peptide-Assisted Nucleic Acid Delivery Systems on the Rise

2021 ◽  
Vol 22 (16) ◽  
pp. 9092
Author(s):  
Shabnam Tarvirdipour ◽  
Michal Skowicki ◽  
Cora-Ann Schoenenberger ◽  
Cornelia G. Palivan
Keyword(s):  
Nucleic Acid ◽  
Side Effects ◽  
Nucleic Acids ◽  
Delivery Systems ◽  
Inorganic Nanoparticles ◽  
Water Soluble ◽  
Nucleic Acid Delivery ◽  
Subcellular Organelles ◽  
Cell Internalization ◽  
Site Of Action

Concerns associated with nanocarriers’ therapeutic efficacy and side effects have led to the development of strategies to advance them into targeted and responsive delivery systems. Owing to their bioactivity and biocompatibility, peptides play a key role in these strategies and, thus, have been extensively studied in nanomedicine. Peptide-based nanocarriers, in particular, have burgeoned with advances in purely peptidic structures and in combinations of peptides, both native and modified, with polymers, lipids, and inorganic nanoparticles. In this review, we summarize advances on peptides promoting gene delivery systems. The efficacy of nucleic acid therapies largely depends on cell internalization and the delivery to subcellular organelles. Hence, the review focuses on nanocarriers where peptides are pivotal in ferrying nucleic acids to their site of action, with a special emphasis on peptides that assist anionic, water-soluble nucleic acids in crossing the membrane barriers they encounter on their way to efficient function. In a second part, we address how peptides advance nanoassembly delivery tools, such that they navigate delivery barriers and release their nucleic acid cargo at specific sites in a controlled fashion.

Multiple sclerosis progression and galanin receptor GALR2: is there evidence for a link?

2021 ◽  
Vol 21 (2) ◽  
pp. 107-111
Author(s):  
Victoria I. Lioudyno ◽  
Alexandr G. Ilves ◽  
Gennadij N. Bisaga ◽  
Irina N. Abdurasulova
Keyword(s):  
Structural Changes ◽  
Reference Sequence ◽  
Published Data ◽  
Study Cohort ◽  
Progression Rate ◽  
Disease Course ◽  
Galanin Receptor ◽  
Exon 2 ◽  
Disease Progression Rate

BACKGROUND: Given the recently proposed role of the rare galanin receptor-2 (GALR2) genes missense mutation (SNP rs61745847) in the etiology of MS, we genotyped rs61745847 in a group of MS patients that was enriched with an unfavorable disease course cases. MATERIALS AND METHODS: Our study cohort consisted of 100 MS patients selected based on their progressive course, high disease progression rate and pediatric onset. To determine the nucleotide sequence of GALR2 gene fragment, surrounding the rs61745847 area, Sanger sequencing of PCR amplicons was performed. RESULTS: No homozygous rs61745847 carrier was found in our cohort, and the region of exon 2 surrounding rs61745847 completely coincided with the reference sequence (Gene Bank NC_000017.11). In agreement with previously published data on Canadian and Brazilian populations of patients, our study of a Russian cohort confirmed the rarity of the rs61745847 variant, including among patients with rapidly progressive MS. CONCLUSIONS: Thus, although structural changes in the GALR2 gene associated with rs61745847 may play a significant role in individual patients carrying this rare mutation, it is unlikely that such changes determine an unfavorable disease course of MS in general.

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