Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 5
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

Porcine circovirus type 2 (PCV2) is an economically important swine pathogen and, although small, it has the highest evolution rate among DNA viruses. Commercial PCV2 commercial vaccines are inactivated PCV2 isolates or a subunit vaccine based on the Cap protein of PCV2. Currently, PCV2 VLPs of individual subtype vaccines are available. Although the main prevalent genotype worldwide is PCV2b, the emerging subtype PCV2d subtype is also increasingly associated with PCV disease. The aim of the study was to evaluate the protective efficacy of VLP based on the PCV2b and 2d subtypes against the mixed challenge of two hypotype PCV2 in mice. Thirty-six female SPV Kunming mice were immunized twice with PCV2b and 2d VLPs, then challenged with PCV2b and PCV2d, to assess the immunogenicity and effectiveness of the VLPs. Vaccination of the mice with PCV2b and 2d VLPs elicited a robust antibody response specific for the PCV2. The virus load detected in the 2b and 2d spleen vaccine group was the lowest compared to other groups. Furthermore, there was no pathological damage in the HE stained sections of the 2b and 2d spleen vaccine, and no virus was detected in the immunohistochemical sections. Our data suggest that the mixed PCV2b and 2d VLP vaccine could protect mice from challenge with the mixed infection of PCV2b and PCV2d.
Go to article

Bibliography


Akahata W, Yang ZY, Andersen H, Sun S, Holdaway HA, Kong WP, Lewis MG, Higgs S, Rossmann MG, Rao S, Nabel GJ (2010) A virus-like particle vaccine for epidemic Chikungunya virus protects nonhuman primates against infection. Nat Med 16: 334-338.
Firth C, Charleston MA, Duffy S, Shapiro B, Holmes EC (2009) Insights into the evolutionary history of an emerging livestock pathogen: porcine circovirus 2. J Virol 83: 12813-12821.
Forstova J, Krauzewicz N, Wallace S, Street A J, Dilworth S M, Beard S, Griffin B E (1993) Cooperation of structural proteins during late events in the life cycle of polyomavirus. J Virol 67: 1405-1413.
Fraile L, Sibila M, Nofrarias M, Lopez-Jimenez R, Huerta E, Llorens A, Lopez-Soria S, Perez D, Segales J (2012) Effect of sow and piglet porcine circovirus type 2 (PCV2) vaccination on piglet mortality, viraemia, antibody titre and production parameters. Vet Microbiol 161: 229-234.
Ge X, Wang F, Guo X, Yang H (2012) Porcine circovirus type 2 and its associated diseases in China. Virus Res 164: 100-106.
Guo L, Fu Y, Wang Y, Lu Y, Wei Y, Tang Q, Fan P, Liu J, Zhang L, Zhang F, Huang L, Liu D, Li S, Wu H, Liu C (2012) A porcine circovirus type 2 (PCV2) mutant with 234 amino acids in capsid protein showed more virulence in vivo, compared with classical PCV2a/b strain. PLoS One 7: e41463.
Guo LJ, Lu YH, Wei YW, Huang LP, Liu CM (2010) Porcine circovirus type 2 (PCV2): genetic variation and newly emerging genotypes in China. Virol J 7: 273.
Hemann M, Beach NM, Meng XJ, Halbur PG, Opriessnig T (2012) Vaccination with inactivated or live-attenuated chimeric PCV1-2 results in decreased viremia in challenge-exposed pigs and may reduce transmission of PCV2. Vet Microbiol 158: 180-186.
Jiang W, Li M, He F, Zhou S, Zhu L (2017) Targeting the NLRP3 inflammasome to attenuate spinal cord injury in mice. J Neuroinflammation 14: 207.
Jourdan N, Godeke G J, Penaud M, Mottola G, Sorrentino A, Rottier P J, Bonatti S (2006) Assembly of HCV E1 and E2 glycoproteins into coronavirus VLPs. Arch Virol 151: 2085-2094.
Kixmoller M, Ritzmann M, Eddicks M, Saalmuller A, Elbers K, Fachinger V (2008) Reduction of PMWS-associated clinical signs and co-infections by vaccination against PCV2. Vaccine 26: 3443-3451.
Kwon T, Lee DU, Yoo SJ, Je SH, Shin JY, Lyoo YS (2017) Genotypic diversity of porcine circovirus type 2 (PCV2) and genotype shift to PCV2d in Korean pig population. Virus Res 228: 24-29.
Mohsen MO, Zha L, Cabral-Miranda G, Bachmann MF (2017) Major findings and recent advances in virus- -like particle (VLP)-based vac-cines. Semin Immunol 34: 123-132.
Nawagitgul P, Morozov I, Bolin SR, Harms PA, Sorden SD, Paul PS (2000) Open reading frame 2 of porcine circo- virus type 2 encodes a major capsid protein. J Gen Virol 81: 2281-2287.
Opriessnig T, Shen HG, Pal N, Ramamoorthy S, Huang YW, Lager KM, Beach NM, Halbur PG, Meng XJ (2011) A live-attenuated chimeric porcine circovirus type 2 (PCV2) vaccine is transmitted to contact pigs but is not upregulated by concurrent infection with porcine parvovirus (PPV) and porcine reproductive and respira- tory syndrome virus (PRRSV) and is efficacious in a PCV2b-PRRSV-PPV challenge model. Clin Vaccine Immunol 18: 1261-1268.
Palkova Z, Adamec T, Liebl D, Stokrova J, Forstova J (2000) Production of polyomavirus structural protein VP1 in yeast cells and its interac-tion with cell structures. FEBS Lett 478: 281-289.
Ramqvist T, Andreasson K, Dalianis T (2007) Vaccination, immune and gene therapy based on virus-like particles against viral infections and cancer. Expert Opin Biol Ther 7: 997-1007.
Salunke DM, Caspar DL, Garcea RL (1986) Self-assembly of purified polyomavirus capsid protein VP1. Cell 46: 895-904.
Segales J (2015) Best practice and future challenges for vaccination against porcine circovirus type 2. Expert Rev Vaccines 14: 473-487.
Segales J, Calsamiglia M, Olvera A, Sibila M, Badiella L, Domingo M (2005) Quantification of porcine circovirus type 2 (PCV2) DNA in serum and tonsillar, nasal, tracheo-bronchial, urinary and faecal swabs of pigs with and without postweaning multisystemic wasting syndrome (PMWS). Vet Microbiol 111: 223-229.
Segales J, Martinez-Guino L, Cortey M, Navarro N, Huerta E, Sibila M, Pujols J, Kekarainen T (2009) Retrospective study on swine Torque teno virus genogroups 1 and 2 infection from 1985 to 2005 in Spain. Vet Microbiol 134(3-4): 199-207.
Stewart M, Bhatia Y, Athmaran TN, Noad R, Gastaldi C, Dubois E, Russo P, Thiery R, Sailleau C, Breard E, Zientara S, Roy P (2010) Vali-dation of a novel approach for the rapid production of immunogenic virus-like particles for bluetongue virus. Vaccine 28: 3047-3054.
Szecsi J, Boson B, Johnsson P, Dupeyrot-Lacas P, Matrosovich M, Klenk HD, Klatzmann D, Volchkov V, Cosset FL (2006) Induction of neutralising antibodies by virus-like particles harbouring surface proteins from highly pathogenic H5N1 and H7N1 influenza viruses. Virol J 3: 70.
Wang F, Guo X, Ge X, Wang Z, Chen Y, Cha Z, Yang H (2009) Genetic variation analysis of Chinese strains of porcine circovirus type 2. Virus Res 145: 151-156.
Xiao CT, Halbur PG, Opriessnig T (2012) Complete genome sequence of a novel porcine circovirus type 2b variant present in cases of vac-cine failures in the United States. J Virol 86: 12469.
Xiao CT, Halbur PG, Opriessnig T (2015) Global molecular genetic analysis of porcine circovirus type 2 (PCV2) sequences confirms the presence of four main PCV2 genotypes and reveals a rapid increase of PCV2d. J Gen Virol 96: 1830-1841.
Xiao CT, Harmon KM, Halbur PG, Opriessnig T (2016) PCV2d-2 is the predominant type of PCV2 DNA in pig samples collected in the U.S. during 2014-2016. Vet Microbiol 197: 72-77.
Yang S, Yin S, Shang Y, Liu B, Yuan L, Zafar Khan MU, Liu X, Cai J (2018) Phylogenetic and genetic variation analyses of porcine circovirus type 2 isolated from China. Transbound Emerg Dis 65: e383-e392.
Yuan X, Lin H, Li B, He K, Fan H (2017) Efficacy and immunogenicity of recombinant swinepox virus expressing the truncated S protein of a novel isolate of porcine epidemic diarrhea virus. Arch Virol 162: 3779-3789.
Zhang Y, Wang Z, Zhan Y, Gong Q, Yu W, Deng Z, Wang A, Yang Y, Wang N (2016) Generation of E. coli-derived virus-like particles of porcine circovirus type 2 and their use in an indirect IgG enzyme-linked immunosorbent assay. Arch Virol 161: 1485-1491.
Go to article

Authors and Affiliations

X.M. Yuan
1
Q.C. Yuan
1
S.M. Feng
1
Z.B. Deng
1

  1. Laboratory of Animal Disease Prevention and Control and Animal model, Hunan Provincial Key Laboratory of Protein Engineering in Animal Vaccines, College of Veterinary Medicine, Hunan Agricultural University, No. 1 Nongda road, Furong District, Changsha, 410128, People’s Republic of China
Download PDF Download RIS Download Bibtex

Abstract

A proof of concept for using paper test as a suitable method in the production of monoclonal antibodies (MAbs) is reported. The paper test which detects antibodies against porcine circovirus type 2 (PCV2) using colloidal gold-labelled capsid protein as the antigen probe was applied exclusively in the screening of anti-PCV2 MAbs. It allowed the detection of 118 single cell clones within 30 min using naked eyes. MAbs with specific binding to authentic epitopes on the virus were selected using a blocking strategy in which the antibody was pre-incubated with PCV2 viral sample before applying to the test paper. Five hybridomas secreting MAbs against the capsid protein were obtained, with only three of them capable of binding to PCV2. The results were validated and confirmed using enzyme-linked immunosorbent assay and immunofluorescence assay. The paper test is simple, rapid, and independent on professional technicians and proves to be an excellent approach for the screening of MAbs against specific targets.
Go to article

Bibliography


Arsawiset S, Teepoo S (2020) Ready-to-use, functionalized paper test strip used with a smartphone for the simultaneous on-site detection of free chlorine, hydrogen sulfide and formaldehyde in wastewater. Anal Chim Acta 1118: 63-72.
Chae C (2004) Postweaning multisystemic wasting syndrome: a review of aetiology, diagnosis and pathology. Vet J 168: 41-49.
Griol A, Peransi S, Rodrigo M, Hurtado J, Bellieres L, Ivanova T, Zurita D, Sánchez C, Recuero S, Hernández A, Simón S, Balka G, Bossis I, Capo A, Camarca A, D’Auria S, Varriale A, Giusti A (2019) Design and development of photonic biosensors for swine viral diseases detection. Sensors (Basel) 19: 3985.
Huang L, Tian S, Zhao W, Liu K, Ma X, Guo J (2020) Multiplexed detection of biomarkers in lateral-flow immunoassays. Analyst 145: 2828-2840.
Huang L, Wei Y, Xia D, Liu D, Zhu H, Wu H, Feng L, Liu C (2019) A broad spectrum monoclonal antibody against porcine circovirus type 2 for antigen and antibody detection. Appl Microbiol Biotechnol 103: 3453-3464.
Jin Q, Yang J, Lu Q, Guo J, Deng R, Wang Y, Wang S, Wang S, Chen W, Zhi Y, Wang L, Yang S, Zhang G (2012) Development of an immunochromatographic strip for the detection of antibodies against porcine circovirus-2. J Vet Diagn Invest 24: 1151-1157.
Johnson J, Higgins A, Navarro A, Huang Y, Esper FL, Barton N, Esch D, Shaw C, Olivo PD, Miao LY (2011) Subtyping influenza A virus with monoclonal antibodies and an indirect immunofluorescence assay. J Clin Microbiol 50: 396-400.
Kaushik A, Tiwari S, Dev Jayant R, Marty A, Nair M (2016) Towards detection and diagnosis of Ebola virus disease at point-of-care. Biosens Bioelectron 75: 254-272.
Kohler G, Milstein C (1975) Continuous cultures of fused cells secreting antibody of predefined specificity. Nature 256: 495-497.
Li G, Wang A, Chen Y, Sun Y, Du Y, Wang X, Ding P, Jia R, Wang Y, Zhang G (2021) Development of a colloidal gold-based immunochromatographic strip for rapid detection of severe acute respiratory syndrome coronavirus 2 spike protein. Front Immunol 12: 635677.
Li H, Yang J, Bao D, Hou J, Zhi Y, Yang Y, Ji P, Zhou E, Qiao S, Zhang G (2017) Development of an immunochromatographic strip for detection of antibodies against porcine reproductive and respiratory syndrome virus. J Vet Sci 18: 307-316.
Liu C, Feng H, Liu Y, Chen Y, Yang S, Deng R, Zhang G (2020) Soluble FMDV VP1 proteins fused with calreticulin expressed in Escherichia coli under the assist of trigger factor16 (Tf16) formed into high immunogenic polymers. Int J Biol Macromol 155: 1532-1540.
Liu G, Qiao X, Chang C, Hua T, Wang J, Tang B, Zhang D (2020) Reduction of postweaning multisystemic wasting syndrome-associated clinical symptoms by virus-like particle vaccine against porcine parvovirus and porcine circovirus type 2. Viral Immunol 33: 444-456.
Liu X, Yang J, Li Q, Wang Y, Wang Y, Li G, Shi J, Ding P, Guo J, Deng R, Zhang G (2020) A strip test for the optical determination of influenza virus H3 subtype using gold nanoparticle coated polystyrene latex microspheres. Mikrochim Acta 187: 306.
Ma Y, Ni C, Dzakah EE, Wang HY, Kang K, Tang SX, Wang JH, Wang JF (2016) Development of monoclonal antibodies against HIV-1 p24 protein and its application in colloidal gold immunochromatographic assay for HIV-1 detection. Biomed Res Int 2016: 6743904.
Meyers C, Mo XB, Li XD, Yin B, Deng JH, Tian KG, Yuan A (2019) Structural roles of PCV2 capsid protein N-terminus in PCV2 particle assembly and identification of PCV2 type-specific neutralizing epitope. PLoS Pathog 15: e1007562.
Montagnese C, Barattini P, Giusti A, Balka G, Bruno U, Bossis I, Gelasakis A, Bonasso M, Philmis P, Dénes L, Peransi S, Rodrigo M, Simón S, Griol A, Wozniakowski G, Podgorska K, Pugliese C, Nannucci L, D’Auria S, Varriale A (2019) A diagnostic device for in-situ detection of swine viral diseases: the SWINOSTICS project. Sensors (Basel) 19: 407.
Na G, Hu X, Yang J, Sun Y, Kwee S, Tang L, Xing G, Xing Y, Zhang G (2020) Colloidal gold-based immunochromatographic strip assay for the rapid detection of bacitracin zinc in milk. Food Chem 327: 126879.
Nannucci L, Barattini P, Bossis I, Woźniakowski G, Balka G, Pugliese C (2020) Point-of-service diagnostic technology for detection of swine viral diseases. J Vet Res 64: 15-23.
Shang SB, Jin YL, Jiang XT, Zhou JY, Zhang X, Xing G, He JL, Yan Y (2009) Fine mapping of antigenic epitopes on capsid proteins of porcine circovirus, and antigenic phenotype of porcine circovirus type 2. Mol Immunol 46: 327-334.
Wang Y, Guo J, Qiao S, Li Q, Yang J, Jin Q, Zhang G (2016) GP5 protein-based ELISA for the detection of PRRSV antibodies. Pol J Vet Sci 19: 495-501.
Warren AD, Kwong GA, Wood DK, Lin KY, Bhatia SN (2014) Point-of-care diagnostics for noncommunicable diseases using synthetic urinary biomarkers and paper microfluidics. Proc Natl Acad Sci U S A 111: 3671-3676.
Yang X, Yang J, Wang Y, Li L, Sun Z, Yue Z, Tian F, He L, Hu X (2018) A lateral flow immunochromatographic strip test for rapid detection of oseltamivir phosphate in egg and chicken meat. Sci Rep 8: 16680.
Zhang G, Guo J, Wang X (2009) Immunochromatographic lateral flow strip tests. Methods Mol Biol 504: 169-183.
Zhang G, Wang X, Yang J, Yang Y, Xing G, Li Q, Zhao D, Chai S, Guo J (2006) Development of an immunochromatographic lateral flow test strip for detection of beta-adrenergic agonist Clenbuterol residues. J Immunol Methods 312: 27-33.
Go to article

Authors and Affiliations

Q.Y. Jin
1
L.L. Feng
2
Y.B. Wang
3
P. Li
4
J.F. Yang
1
M. Teng
1
S.J. Chai
1
G.X. Xing
1
G.P. Zhang
1

  1. Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou 450002, PR China
  2. Institute of Agricultural Economics and Information, Henan Academy of Agricultural Sciences, Zhengzhou 450002, PR China
  3. School of Public Health, Xinxiang Medical University, Xinxiang 453003, PR China
  4. School of Life Sciences and Basic Medicine, Xinxiang University, Xinxiang 453003, PR China
Download PDF Download RIS Download Bibtex

Abstract

In this paper, we present the electrical and electro-optical characterizations of an InAs/GaSb type-2 superlattice barrier photodetector operating in the full longwave infrared spectral domain. The fabricated detectors exhibited a 50% cut-off wavelength around 14 μm at 80 K and a quantum efficiency slightly above 20%. The dark current density was of 4.6 × 10 2 A/cm2 at 80 K and a minority carrier lateral diffusion was evaluated through dark current measurements on different detector sizes. In addition, detector spectral response, its dark current-voltage characteristics and capacitance-voltage curve accompanied by electric field simulations were analyzed in order to determine the operating bias and the dark current regimes at different biases. Finally, dark current simulations were also performed to estimate a minority carrier lifetime by comparing experimental curves with simulated ones.

Go to article

Authors and Affiliations

R. Alchaar
J. B. Rodriguez
L. Höglund
S. Naureen
E. Costard
P. Christol
Download PDF Download RIS Download Bibtex

Abstract

This research presents an advanced control approach for battery management in Battery Electric Utility Vehicles (BEUV) operating in indoor logistics environments. The proposed approach utilizes a combination of Proportional-Integral (PI), Fuzzy PI, and Interval Type 2 Fuzzy PI (IT2FuzzyPI) control structures to augment the state space model for battery management. The state space model incorporates the voltage and current of each battery cell as state variables and considers the current demand from the electric motor as an input. By integrating fuzzy logic with PI control and considering uncertainty, the IT2FuzzyPI structure offers improved control recital and system robustness in the occurrence of nonlinearities, uncertainties, and turbulences. The outcomes of the simulation validate the effectiveness of the proposed scheme in managing the battery pack system's state of charge and controlling the rates of charging and discharging. The IT2FuzzyPI control significantly improves the overall proficiency and longevity of the battery system, making it suitable for battery electric utility vehicles in logistics environments. This research contributes to the field of battery management systems, providing a valuable tool for designing and evaluating high-performance electric vehicles with enhanced control capabilities.
Go to article

Authors and Affiliations

R. Arun Kumar
R. Sankar Ganesh
Download PDF Download RIS Download Bibtex

Abstract

Intensive hypoglycemic treatment is the strongest preventive strategy against the development of microvascular complications of type 2 diabetes (T2DM), including diabetic nephropathy. However, some antidiabetic drugs, i.e. sodium-glucose cotransporter-2 inhibitors (SGLT-2i) and glucagon-like peptide-1 receptor agonists (GLP1-RA) have an additional renoprotective effect beyond glucose control by itself. Similar, both SGLT-2i and GLP1-RA have been demonstrated to decrease the risk of adverse cardiovascular (CV) events in CV outcome trials. Nevertheless, there are relevant differences in CV and renal effects of SGLT-2i and GLP1-RA. First, SGLT2i reduced the incidence and progression of albuminuria and prevented loss of kidney function, while predominant renal benefits of GLP1-RA were driven by albuminuria outcomes. Second, the risk of heart failure (HF) hospitalizations decreased on SGLT2i but not on GLP1-RA, which gives priority to SGLT2i in T2DM and HF, especially with depressed EF. Third, either GLP1-RA (reducing predominantly atherosclerosis-dependent events) or SGLT-2i, should be used in T2DM and established atherosclerotic CV disease (ASCVD) or other indicators of high CV risk. In this review, we have briefly compared clinical practice guidelines of the American Diabetes Association (2020 and 2021 versions), Polish Diabetes Association (2020) and the European Society of Cardiology/European Association for the Study of Diabetes (2019), with a focus on the choice between SGLT-2i and GLP1-RA in patients with diabetic kidney disease.
Go to article

Bibliography

1. American Diabetes Association: Microvascular complications and foot care: Standards of Medical Care in Diabetes-2021. Standards of Medical Care in Diabetes–2020. Diabetes Care. 2020; 43 (Suppl 1): S135–S151.
2. American Diabetes Association: Pharmacologic approaches to glycemic treatment: Standards of Medical Care in Diabetes-2020. Diabetes Care. 2020; 43 (Suppl 1): S98–S110.
3. American Diabetes Association: Pharmacologic approaches to glycemic treatment: Standards of Medical Care in Diabetes-2021. Diabetes Care. 2021; 44 (Suppl 1): S111–S124.
4. Williams D.M., Nawaz A., Evans M.: Renal outcomes in type 2 diabetes: A review of cardiovascular and renal outcome trials. Diabetes Ther. 2020; 11: 369–386.
5. Heerspink H.J.L., Stefánsson, B.V., Correa-Rotter, et al.: Dapagliflozin in patients with chronic kidney disease. N Engl J Med. 2020; 383: 1436–1446.
6. Jhund P.S., Solomon S.D., Docherty K.F., et al.: Efficacy of dapagliflozin on renal function and outcomes in patients with heart failure with reduced ejection fraction: Results of DAPA-HF. Circulation 2020 Oct 12; doi: 10.1161/CIRCULATIONAHA.120.050391.
7. Packer M., Anker S.D., Butler J., et al.: Cardiovascular and renal outcomes with empagliflozin in heart failure. N Engl J Med. 2020; 383: 1413–1424.
8. American Diabetes Association: Pharmacologic approaches to glycemic treatment: Standards of Medical Care in Diabetes-2019. Diabetes Care. 2019; 42 (Suppl 1): S90–S102.
9. Diabetes Poland (Polish Diabetes Association): 2020 Guidelines on the management of diabetic patients: A position of Diabetes Poland. Clin Diabetol. 2020; 9: 1–101.
10. Cosentino F., Grant P.J., Aboyans V., et al.: 2019 ESC Guidelines on diabetes, pre-diabetes, and cardiovascular diseases developed in collaboration with the EASD. Eur Heart J. 2020; 41: 255–323.
Go to article

Authors and Affiliations

Ewa Wieczorek-Surdacka
1
Andrzej Surdacki
2
Jolanta Świerszcz
3
Bernadeta Chyrchel
4

  1. Chair and Department of Nephrology, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland
  2. Second Department of Cardiology, Institute of Cardiology, Jagiellonian University Medical College, Kraków, Poland
  3. Department of Medical Education, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland
  4. Second Department of Cardiology, Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland

This page uses 'cookies'. Learn more