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1.
Dhanraj Samuel Kestutis Sasnauskas Li Jin Stuart Beard Aurelija Zvirbliene Alma Gedvilaite Bernard Cohen 《Journal of medical virology》2002,66(1):123-130
To develop improved reagents for mumps serology a high-level yeast expression system was employed to produce recombinant mumps nucleoprotein (rNP). The rNP was purified by CsCl gradient centrifugation and yielded approximately 15 mg/l of yeast culture. Electron microscopy of the rNP revealed characteristic herring-bone structures. The electrophoretic mobility of rNP in yeast cells was similar to native NP in SDS-PAGE. Monoclonal antibodies to rNP reacted with native mumps virus nucleoprotein by immunofluorescence assay. A monoclonal antibody to native mumps virus NP reacted with rNP by Western blot assay. The rNP was investigated as antigen in an IgM capture enzyme immunoassay (EIA) using a horseradish peroxidase conjugate of monoclonal antibody to the rNP. Eighteen sera previously found to be positive by IgM capture radioimmunoassay (MACRIA) and 30 sera that were mumps IgM negative by MACRIA were tested by mumps IgM capture EIA. The results for the two test were concordant. In addition, 26 rheumatoid factor positive sera and 35 sera that were IgM positive for measles, rubella or parvovirus B19 were tested. Fifty-nine sera were negative by mumps IgM capture EIA but two sera collected from two infants 3 and 6 weeks after mumps, measles and rubella vaccination were positive. Mumps MACRIA confirmed these results. Compared to MACRIA the overall sensitivity was 100% (20/20) and specificity was 96.8% (30/31). The yeast expressed rNP was highly immunogenic and suitable for use in IgM capture EIA for the diagnosis of mumps. 相似文献
2.
Joanna Kaczorowska Aurelija Cicilionyt Anne L. Timmerman Martin Deijs Maarten F. Jebbink Johannes B. van Goudoever Britt J. van Keulen Margreet Bakker Lia van der Hoek 《Viruses》2022,14(5)
Anelloviruses (AVs) are found in the vast majority of the human population and are most probably part of a healthy virome. These viruses infect humans in the early stage of life, however, the characteristics of the first colonizing AVs are still unknown. We screened a collection of 107 blood samples from children between 0.4 and 64.8 months of age for the presence of three AV genera: the Alpha-, Beta- and Gammatorquevirus. The youngest child that was positive for AV was 1.2 months old, and a peak in prevalence (100% of samples positive) was reached between the twelfth and eighteenth months of life. Intriguingly, the beta- and gammatorqueviruses were detected most at the early stage of life (up to 12 months), whereas alphatorqueviruses, the most common AVs in adults, increased in prevalence in children older than 12 months. To determine whether that order of colonization may be related to oral transmission and unequal presence of AV genera in breast milk, we examined 63 breast milk samples. Thirty-two percent of the breast milk samples were positive in a qPCR detecting beta- and gammatorqueviruses, while alphatorqueviruses were detected in 10% of the samples, and this difference was significant (p = 0.00654). In conclusion, we show that beta- and gammatorqueviruses colonize humans in the first months of life and that breastfeeding could play a role in AV transmission. 相似文献
3.
Rokas Serpytis Aurelija Navickaite Emilija Serpytiene Jurate Barysiene Germanas Marinskis Dalius Jatuzis Zaneta Petrulioniene Aleksandras Laucevicius Pranas Serpytis 《The American journal of medicine》2018,131(6):703.e1-703.e5
Objective
Atrial fibrillation is the most common cardiac arrhythmia and a known risk factor for cerebrovascular stroke. Atrial fibrillation and longstanding hypertension may produce ischemic lesions leading to progressive cognitive impairment. The impact of atrial fibrillation alone on cognitive impairment has not been evaluated. Our objective was to compare cognitive function, quality of life, psychological distress, and impulsiveness in people with atrial fibrillation and a matched control group.Methods
The study included 60 patients. The first group of patients were ≥55 years of age, with ≥5 years history of atrial fibrillation, without hypertension (or with well-controlled hypertension), without previous dementia, compared with a matched group of 30 healthy control participants. Demographic and clinical characteristics were recorded. Subjects underwent the following rating scales: Mini-Mental State Examination, Hospital Anxiety and Depression, Heart Quality of Life, and Barratt Impulsiveness Scale.Results
In the atrial fibrillation group there were 63% male (n = 19) and 37% female (n = 11) patients; the control group was 33% male (n = 10) and 67% female (n = 20). Age range was from 55 to 81 years in both groups, mean = 63.9 years (±6.4) in the atrial fibrillation group and 66.1 years (±8.0) in controls.In the atrial fibrillation group, 23.3% had primary or general education, college – 23.3% and university – 53.3%; in the control group – 20%, 23.3%, and 56.7%, respectively. Mini-Mental State Examination score was 27.6 (±1.6) in the atrial fibrillation group vs 29.5 (±0.73) in the control group (P < .0001). Anxiety disorders were observed in 20 patients (66.7%) in atrial fibrillation vs 8 patients (26.67%) in the control group (P = .009). Heart Quality of Life mean score was 1.4 (±0.65) in the atrial fibrillation and 2.6 (±0.35) in the control group (P < .0001). Physical subscale mean scores were 1.4 (±0.74) in atrial fibrillation vs 2.8 (±0.18) in the control group (P < .0001).Conclusion
Individuals with atrial fibrillation are more likely to develop anxiety disorder. Cognitive status is significantly lower in the atrial fibrillation group. In comparison with healthy subjects, individuals with atrial fibrillation have worse quality of life. 相似文献4.
Luis J. Muñoz Dolores Ludeña Alma Gedvilaite Aurelija Zvirbliene Burkhard Jandrig Tatyana Voronkova Rainer G. Ulrich Dolores E. López 《Archives of virology》2013,158(11):2255-2265
We have detected a high incidence of lymphomas in a colony of GASH:Sal Syrian golden hamsters (Mesocricetus auratus). This strain is characterised by its ability to present convulsive crises of audiogenic origin. Almost 16 % (90 males and 60 females) of the 975 animals were affected during a 5-year period by the development of a progressing lymphoid tumour and exhibited similar clinical profiles characterised by lethargy, anorexia, evident abdominal distension, and a rapid disease progression resulting in mortality within 1 to 2 weeks. A TaqMan® probe-based real-time PCR analysis of genomic DNA from different tissue samples of the affected animals revealed the presence of a DNA sequence encoding the hamster polyomavirus (HaPyV) VP1 capsid protein. Additionally, immunohistochemical analysis using HaPyV-VP1-specific monoclonal antibodies confirmed the presence of viral proteins in all hamster tumour tissues analysed within the colony. An indirect ELISA and western blot analysis confirmed the presence of antibodies against the VP1 capsid protein in sera, not only from affected and non-affected GASH:Sal hamsters but also from control hamsters from the same breeding area. The HaPyV genome that accumulated in tumour tissues typically contained deletions affecting the noncoding regulatory region and adjacent sequences coding for the N-terminal part of the capsid protein VP2. 相似文献
5.
Jennifer Chun Yu Mario Mietzsch Amriti Singh Alberto Jimenez Ybargollin Shweta Kailasan Paul Chipman Nilakshee Bhattacharya Julia Fakhiri Dirk Grimm Amit Kapoor Indr Ku
inskait-Kodz Aurelija
virblien Maria Sderlund-Venermo Robert McKenna Mavis Agbandje-McKenna 《Viruses》2021,13(2)
Human bocavirus 1 (HBoV1) has gained attention as a gene delivery vector with its ability to infect polarized human airway epithelia and 5.5 kb genome packaging capacity. Gorilla bocavirus 1 (GBoV1) VP3 shares 86% amino acid sequence identity with HBoV1 but has better transduction efficiency in several human cell types. Here, we report the capsid structure of GBoV1 determined to 2.76 Å resolution using cryo-electron microscopy (cryo-EM) and its interaction with mouse monoclonal antibodies (mAbs) and human sera. GBoV1 shares capsid surface morphologies with other parvoviruses, with a channel at the 5-fold symmetry axis, protrusions surrounding the 3-fold axis and a depression at the 2-fold axis. A 2/5-fold wall separates the 2-fold and 5-fold axes. Compared to HBoV1, differences are localized to the 3-fold protrusions. Consistently, native dot immunoblots and cryo-EM showed cross-reactivity and binding, respectively, by a 5-fold targeted HBoV1 mAb, 15C6. Surprisingly, recognition was observed for one out of three 3-fold targeted mAbs, 12C1, indicating some structural similarity at this region. In addition, GBoV1, tested against 40 human sera, showed the similar rates of seropositivity as HBoV1. Immunogenic reactivity against parvoviral vectors is a significant barrier to efficient gene delivery. This study is a step towards optimizing bocaparvovirus vectors with antibody escape properties. 相似文献
6.
7.
Jucaite A Fernell E Forssberg H Hadders-Algra M 《Developmental medicine and child neurology》2003,45(11):731-742
Precision grip and concomitant anticipatory postural adjustments were investigated in 11 children (three females, eight males; mean age 9 years 1 month, SD 11 months) with attention-deficit-hyperactivity disorder (ADHD); 12 children (three females, nine males; mean age 9 years, SD 7 months) with developmental coordination disorder (DCD), and 13 children (two females, 11 males; mean age 9 years 9 months, SD 11 months) with a combination of ADHD and DCD (ADHD+). There were two comparison groups: an age-matched group (four females, 11 males; mean age 9 years 1 month, SD 14 months) and a younger age group (five females, six males; mean age 6 years 5 months, SD 8 months). Adaptation to different weights was evaluated by lifting a specialized grip instrument monitoring grip force, load force, and centre of foot pressure displacements. Children with ADHD+ showed: (1) excessive grip forces, (2) decreased amplitude and prolonged onset of postural adjustments, and (3) reduced ability to adapt the motor output. Children with ADHD and DCD did not scale manual and postural forces in amplitude and time domains. Children with DCD also differed in delayed timing of postural adjustments. Results indicate that children with ADHD and DCD show a spectrum of neural dysfunctions underlying poor motor coordination, which are not specific to the clinical disorder. 相似文献
8.
Gedvilaite A Zvirbliene A Staniulis J Sasnauskas K Krüger DH Ulrich R 《Viral immunology》2004,17(1):51-68
Insertion of a short-sized epitope at four different sites of yeast-expressed hamster polyomavirus major capsid protein VP1 has been found to result in the formation of chimeric virus-like particles. Here, we demonstrate that the insertion of 45 or 120 amino acid-long segments from the N-terminus of Puumala hantavirus nucleocapsid protein into sites 1 (amino acids 80-89) and 4 (amino acids 288-295) of VP1 allowed the highly efficient formation of virus-like particles. In contrast, expression level and assembly capacity of fusions to sites 2 (amino acids 222-225) and 3 (amino acids 243-247) were drastically reduced. Immunization of BALB/c mice with chimeric virus-like particles induced a high-titered antibody response against the hantavirus nucleocapsid protein, even in the absence of any adjuvant. The strongest response was observed in mice immunized with virus-like particles harboring 120 amino acids of hantavirus nucleocapsid protein. According to the immunoglobulin subclass distribution of nucleocapsid protein-specific antibodies a mixed Th1/Th2 response was detected. The VP1 carrier itself also induced a mixed Th1/Th2 response, which was found to be reduced in mice immunized with virus-like particles harboring 120 amino acid-long inserts. In conclusion, hamster polyomavirus VP1 represents a promising carrier moiety for future vaccine development. 相似文献
9.
Molecular characterization of isoniazid-resistant Mycobacterium tuberculosis clinical isolates in Lithuania 总被引:1,自引:0,他引:1
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Bakonyte D Baranauskaite A Cicenaite J Sosnovskaja A Stakenas P 《Antimicrobial agents and chemotherapy》2003,47(6):2009-2011
Mutations at codon 315 of the katG gene were detected in 312 of 364 (85.7%) isoniazid-resistant Mycobacterium tuberculosis isolates. Seven of 52 (13.5%) isoniazid-resistant isolates with the wild-type Ser315 codon and 10 of 52 (19.2%) isoniazid-resistant isolates with a mutated katG allele had mutation -15C-->T in the promoter of the mabA-inhA operon. 相似文献
10.