LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 288

Search options

  1. Article ; Online: Next-Generation Sequencing for the Detection of Microbial Agents in Avian Clinical Samples.

    Afonso, Claudio L / Afonso, Anna M

    Veterinary sciences

    2023  Volume 10, Issue 12

    Abstract: Direct-targeted next-generation sequencing (tNGS), with its undoubtedly superior diagnostic capacity over real-time PCR (RT-PCR), and direct-non-targeted NGS (ntNGS), with its higher capacity to identify and characterize multiple agents, are both likely ... ...

    Abstract Direct-targeted next-generation sequencing (tNGS), with its undoubtedly superior diagnostic capacity over real-time PCR (RT-PCR), and direct-non-targeted NGS (ntNGS), with its higher capacity to identify and characterize multiple agents, are both likely to become diagnostic methods of choice in the future. tNGS is a rapid and sensitive method for precise characterization of suspected agents. ntNGS, also known as agnostic diagnosis, does not require a hypothesis and has been used to identify unsuspected infections in clinical samples. Implemented in the form of multiplexed total DNA metagenomics or as total RNA sequencing, the approach produces comprehensive and actionable reports that allow semi-quantitative identification of most of the agents present in respiratory, cloacal, and tissue samples. The diagnostic benefits of the use of direct tNGS and ntNGS are high specificity, compatibility with different types of clinical samples (fresh, frozen, FTA cards, and paraffin-embedded), production of nearly complete infection profiles (viruses, bacteria, fungus, and parasites), production of "semi-quantitative" information, direct agent genotyping, and infectious agent mutational information. The achievements of NGS in terms of diagnosing poultry problems are described here, along with future applications. Multiplexing, development of standard operating procedures, robotics, sequencing kits, automated bioinformatics, cloud computing, and artificial intelligence (AI) are disciplines converging toward the use of this technology for active surveillance in poultry farms. Other advances in human and veterinary NGS sequencing are likely to be adaptable to avian species in the future.
    Language English
    Publishing date 2023-12-04
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2768971-2
    ISSN 2306-7381 ; 2306-7381
    ISSN (online) 2306-7381
    ISSN 2306-7381
    DOI 10.3390/vetsci10120690
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Virulence during Newcastle Disease Viruses Cross Species Adaptation.

    Afonso, Claudio L

    Viruses

    2021  Volume 13, Issue 1

    Abstract: The hypothesis that host adaptation in virulent Newcastle disease viruses (NDV) has been accompanied by virulence modulation is reviewed here. Historical records, experimental data, and phylogenetic analyses from available GenBank sequences suggest that ... ...

    Abstract The hypothesis that host adaptation in virulent Newcastle disease viruses (NDV) has been accompanied by virulence modulation is reviewed here. Historical records, experimental data, and phylogenetic analyses from available GenBank sequences suggest that currently circulating NDVs emerged in the 1920-1940's from low virulence viruses by mutation at the fusion protein cleavage site. These viruses later gave rise to multiple virulent genotypes by modulating virulence in opposite directions. Phylogenetic and pathotyping studies demonstrate that older virulent NDVs further evolved into chicken-adapted genotypes by increasing virulence (velogenic-viscerotropic pathotypes with intracerebral pathogenicity indexes [ICPIs] of 1.6 to 2), or into cormorant-adapted NDVs by moderating virulence (velogenic-neurotropic pathotypes with ICPIs of 1.4 to 1.6), or into pigeon-adapted viruses by further attenuating virulence (mesogenic pathotypes with ICPIs of 0.9 to 1.4). Pathogenesis and transmission experiments on adult chickens demonstrate that chicken-adapted velogenic-viscerotropic viruses are more capable of causing disease than older velogenic-neurotropic viruses. Currently circulating velogenic-viscerotropic viruses are also more capable of replicating and of being transmitted in naïve chickens than viruses from cormorants and pigeons. These evolutionary virulence changes are consistent with theories that predict that virulence may evolve in many directions in order to achieve maximum fitness, as determined by genetic and ecologic constraints.
    MeSH term(s) Animals ; Biological Evolution ; Genetic Variation ; Genome, Viral ; Genomics/methods ; Host Adaptation ; Host Specificity ; Newcastle Disease/virology ; Newcastle disease virus/classification ; Newcastle disease virus/physiology ; Phylogeny ; Virulence ; Virus Replication
    Language English
    Publishing date 2021-01-15
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v13010110
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Next-Generation Sequencing for the Detection of Microbial Agents in Avian Clinical Samples

    Claudio L. Afonso / Anna M. Afonso

    Veterinary Sciences, Vol 10, Iss 12, p

    2023  Volume 690

    Abstract: Direct-targeted next-generation sequencing (tNGS), with its undoubtedly superior diagnostic capacity over real-time PCR (RT-PCR), and direct-non-targeted NGS (ntNGS), with its higher capacity to identify and characterize multiple agents, are both likely ... ...

    Abstract Direct-targeted next-generation sequencing (tNGS), with its undoubtedly superior diagnostic capacity over real-time PCR (RT-PCR), and direct-non-targeted NGS (ntNGS), with its higher capacity to identify and characterize multiple agents, are both likely to become diagnostic methods of choice in the future. tNGS is a rapid and sensitive method for precise characterization of suspected agents. ntNGS, also known as agnostic diagnosis, does not require a hypothesis and has been used to identify unsuspected infections in clinical samples. Implemented in the form of multiplexed total DNA metagenomics or as total RNA sequencing, the approach produces comprehensive and actionable reports that allow semi-quantitative identification of most of the agents present in respiratory, cloacal, and tissue samples. The diagnostic benefits of the use of direct tNGS and ntNGS are high specificity, compatibility with different types of clinical samples (fresh, frozen, FTA cards, and paraffin-embedded), production of nearly complete infection profiles (viruses, bacteria, fungus, and parasites), production of “semi-quantitative” information, direct agent genotyping, and infectious agent mutational information. The achievements of NGS in terms of diagnosing poultry problems are described here, along with future applications. Multiplexing, development of standard operating procedures, robotics, sequencing kits, automated bioinformatics, cloud computing, and artificial intelligence (AI) are disciplines converging toward the use of this technology for active surveillance in poultry farms. Other advances in human and veterinary NGS sequencing are likely to be adaptable to avian species in the future.
    Keywords NGS ; diagnostics ; avian ; chicken ; surveillance ; random sequencing ; Veterinary medicine ; SF600-1100
    Subject code 630
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  4. Article ; Online: Complete genome sequence of seven virulent Newcastle disease virus isolates of sub-genotype XIII.1.1 from Tanzania.

    Goraichuk, Iryna V / Msoffe, Peter L M / Chiwanga, Gaspar H / Dimitrov, Kiril M / Afonso, Claudio L / Suarez, David L

    Microbiology resource announcements

    2023  Volume 12, Issue 10, Page(s) e0040523

    Abstract: We report the complete genome sequences of seven virulent Newcastle disease viruses (NDVs) that were isolated from chickens from live bird markets in the Arusha, Iringa, Mbeya, and Tanga regions of Tanzania in 2012. Phylogenetic analysis revealed that ... ...

    Abstract We report the complete genome sequences of seven virulent Newcastle disease viruses (NDVs) that were isolated from chickens from live bird markets in the Arusha, Iringa, Mbeya, and Tanga regions of Tanzania in 2012. Phylogenetic analysis revealed that all isolates belong to sub-genotype XIII.1.1.
    Language English
    Publishing date 2023-09-26
    Publishing country United States
    Document type Journal Article
    ISSN 2576-098X
    ISSN (online) 2576-098X
    DOI 10.1128/MRA.00405-23
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Whole-Genome Sequence of

    Goraichuk, Iryna V / Davis, James F / Kulkarni, Arun B / Afonso, Claudio L / Suarez, David L

    Microbiology resource announcements

    2021  Volume 10, Issue 15

    Abstract: Here, we report the complete genome sequence of ... ...

    Abstract Here, we report the complete genome sequence of an
    Language English
    Publishing date 2021-04-15
    Publishing country United States
    Document type Journal Article
    ISSN 2576-098X
    ISSN (online) 2576-098X
    DOI 10.1128/MRA.01460-20
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Complete Coding Sequences of Three Chicken Parvovirus Isolates from the United States.

    Goraichuk, Iryna V / Davis, James F / Afonso, Claudio L / Suarez, David L

    Microbiology resource announcements

    2020  Volume 9, Issue 39

    Abstract: Parvoviruses are commonly found in U.S. poultry and are associated with clinical disease. Here, we report the complete coding sequences of three chicken parvoviruses from broiler chickens from commercial farms in the state of Georgia. ...

    Abstract Parvoviruses are commonly found in U.S. poultry and are associated with clinical disease. Here, we report the complete coding sequences of three chicken parvoviruses from broiler chickens from commercial farms in the state of Georgia.
    Language English
    Publishing date 2020-09-24
    Publishing country United States
    Document type Journal Article
    ISSN 2576-098X
    ISSN (online) 2576-098X
    DOI 10.1128/MRA.00735-20
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: A 24-Year-Old Sample Contributes the Complete Genome Sequence of Fowl Aviadenovirus D from the United States.

    Goraichuk, Iryna V / Davis, James F / Kulkarni, Arun B / Afonso, Claudio L / Suarez, David L

    Microbiology resource announcements

    2021  Volume 10, Issue 1

    Abstract: Here, we report the complete genome sequence of fowl aviadenovirus D (FAdV-D) isolated from a preserved 24-year-old pancreas sample of a broiler chicken embryo. The results of the sequence showed that the viral genome is 44,079 bp long. ...

    Abstract Here, we report the complete genome sequence of fowl aviadenovirus D (FAdV-D) isolated from a preserved 24-year-old pancreas sample of a broiler chicken embryo. The results of the sequence showed that the viral genome is 44,079 bp long.
    Language English
    Publishing date 2021-01-07
    Publishing country United States
    Document type Journal Article
    ISSN 2576-098X
    ISSN (online) 2576-098X
    DOI 10.1128/MRA.01211-20
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Unique Variants of Avian Coronaviruses from Indigenous Chickens in Kenya.

    Kariithi, Henry M / Volkening, Jeremy D / Goraichuk, Iryna V / Ateya, Leonard O / Williams-Coplin, Dawn / Olivier, Tim L / Binepal, Yatinder S / Afonso, Claudio L / Suarez, David L

    Viruses

    2023  Volume 15, Issue 2

    Abstract: The avian gamma-coronavirus infectious bronchitis virus (AvCoV, IBV; ...

    Abstract The avian gamma-coronavirus infectious bronchitis virus (AvCoV, IBV;
    MeSH term(s) Animals ; Humans ; Gammacoronavirus ; Kenya/epidemiology ; Chickens ; Africa, Eastern ; Infectious bronchitis virus/genetics
    Language English
    Publishing date 2023-01-17
    Publishing country Switzerland
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v15020264
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article: Genome Sequence Variations of Infectious Bronchitis Virus Serotypes From Commercial Chickens in Mexico.

    Kariithi, Henry M / Volkening, Jeremy D / Leyson, Christina M / Afonso, Claudio L / Christy, Nancy / Decanini, Eduardo Lucio / Lemiere, Stéphane / Suarez, David L

    Frontiers in veterinary science

    2022  Volume 9, Page(s) 931272

    Abstract: New variants of infectious bronchitis viruses (IBVs; ...

    Abstract New variants of infectious bronchitis viruses (IBVs;
    Language English
    Publishing date 2022-07-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2834243-4
    ISSN 2297-1769
    ISSN 2297-1769
    DOI 10.3389/fvets.2022.931272
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Complete Genome Sequence of

    Goraichuk, Iryna V / Davis, James F / Kulkarni, Arun B / Afonso, Claudio L / Suarez, David L

    Microbiology resource announcements

    2020  Volume 9, Issue 9

    Abstract: ... Avian ... ...

    Abstract Avian coronavirus
    Keywords covid19
    Language English
    Publishing date 2020-02-27
    Publishing country United States
    Document type Journal Article
    ISSN 2576-098X
    ISSN (online) 2576-098X
    DOI 10.1128/MRA.00068-20
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top