LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 121

Search options

  1. Article ; Online: Peptidomic analysis of the host-defense peptides in skin secretions of the Amazon River frog Lithobates palmipes (Ranidae).

    Mechkarska, Milena / Barran, Gervonne / Kolodziejek, Jolanta / Coquet, Laurent / Leprince, Jérôme / Jouenne, Thierry / Nowotny, Norbert / Conlon, J Michael

    Comparative biochemistry and physiology. Part D, Genomics & proteomics

    2023  Volume 46, Page(s) 101069

    Abstract: Skin secretions of certain frog species represent a source of host-defense peptides (HDPs) with therapeutic potential and their primary structures provide insight into taxonomic and phylogenetic relationships. Peptidomic analysis was used to characterize ...

    Abstract Skin secretions of certain frog species represent a source of host-defense peptides (HDPs) with therapeutic potential and their primary structures provide insight into taxonomic and phylogenetic relationships. Peptidomic analysis was used to characterize the HDPs in norepinephrine-stimulated skin secretions from the Amazon River frog Lithobates palmipes (Ranidae) collected in Trinidad. A total of ten peptides were purified and identified on the basis of amino acid similarity as belonging to the ranatuerin-2 family (ranatuerin-2PMa, -2PMb, -2PMc, and-2PMd), the brevinin-1 family (brevinin-1PMa, -1PMb, -1PMc and des(8-14)brevinin-1PMa) and the temporin family (temporin-PMa in C-terminally amidated and non-amidated forms). Deletion of the sequence VAAKVLP from brevinin-1PMa (FLPLIAGVAAKVLPKIFCAISKKC) in des[(8-14)brevinin-1PMa resulted in a 10-fold decrease in potency against Staphylococcus aureus (MIC = 31 μM compared with 3 μM) and a > 50-fold decrease in hemolytic activity but potency against Echerichia coli was maintained (MIC = 62.5 μM compared with 50 μM). Temporin-PMa (FLPFLGKLLSGIF.NH
    MeSH term(s) Animals ; Amino Acid Sequence ; Phylogeny ; Staphylococcus aureus/metabolism ; Ranidae/metabolism ; Amphibian Proteins/metabolism ; Skin/metabolism
    Chemical Substances Amphibian Proteins
    Language English
    Publishing date 2023-02-24
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2212119-5
    ISSN 1878-0407 ; 1744-117X
    ISSN (online) 1878-0407
    ISSN 1744-117X
    DOI 10.1016/j.cbd.2023.101069
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Targeted surveillance reveals native and invasive mosquito species infected with Usutu virus.

    Camp, Jeremy V / Kolodziejek, Jolanta / Nowotny, Norbert

    Parasites & vectors

    2019  Volume 12, Issue 1, Page(s) 46

    Abstract: Background: The emergence of Usutu virus (USUV) in Europe was first reported in Austria, 2001, and the virus has since spread to many European countries. Initial outbreaks are marked by a mass die-off of European blackbirds (Turdus merula) and other ... ...

    Abstract Background: The emergence of Usutu virus (USUV) in Europe was first reported in Austria, 2001, and the virus has since spread to many European countries. Initial outbreaks are marked by a mass die-off of European blackbirds (Turdus merula) and other bird species. During outbreaks, the virus has been detected in pools of Culex pipiens mosquitoes, and these mosquitoes are probably the most important enzootic vectors. Beginning in 2017, a second wave of blackbird deaths associated with USUV was observed in eastern Austria; the affected areas expanded to the Austrian federal states of Styria in the south and to Upper Austria in the west in 2018. We sampled the potential vector population at selected sites of bird deaths in 2018 in order to identify infected mosquitoes.
    Results: We detected USUV RNA in 16 out of 19 pools of Cx. pipiens/Cx. torrentium mosquitoes at sites of USUV-linked blackbird mortality in Linz and Graz, Austria. A disseminated virus infection was detected in individuals from selected pools, suggesting that Cx. pipiens form pipiens was the principal vector. In addition to a high rate of infected Cx. pipiens collected from Graz, a disseminated virus infection was detected in a pool of Aedes japonicus japonicus.
    Conclusions: We show herein that naturally-infected mosquitoes at foci of USUV activity are primarily Cx. pipiens form pipiens. In addition, we report the first natural infection of Ae. j. japonicus with USUV, suggesting that it may be involved in the epizootic transmission of USUV in Europe. Ae. j. japonicus is an invasive mosquito whose range is expanding in Europe.
    MeSH term(s) Aedes/virology ; Animals ; Culex/virology ; Epidemiological Monitoring ; Female ; Flavivirus/physiology ; Flavivirus Infections/epidemiology ; Flavivirus Infections/transmission ; Flavivirus Infections/virology ; Humans ; Introduced Species ; Mosquito Vectors/virology
    Language English
    Publishing date 2019-01-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 2409480-8
    ISSN 1756-3305 ; 1756-3305
    ISSN (online) 1756-3305
    ISSN 1756-3305
    DOI 10.1186/s13071-019-3316-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Potentially Zoonotic Viruses in Wild Rodents, United Arab Emirates, 2019-A Pilot Study.

    Weidinger, Pia / Kolodziejek, Jolanta / Khafaga, Tamer / Loney, Tom / Howarth, Brigitte / Sher Shah, Moayyed / Abou Tayoun, Ahmad / Alsheikh-Ali, Alawi / Camp, Jeremy V / Nowotny, Norbert

    Viruses

    2023  Volume 15, Issue 3

    Abstract: The majority of emerging viral infectious diseases in humans originate from wildlife reservoirs, such as rodents and bats. We investigated a possible reservoir, namely wild gerbils and mice trapped in a desert reserve within the emirate of Dubai, United ... ...

    Abstract The majority of emerging viral infectious diseases in humans originate from wildlife reservoirs, such as rodents and bats. We investigated a possible reservoir, namely wild gerbils and mice trapped in a desert reserve within the emirate of Dubai, United Arab Emirates (UAE). In total, 52 gerbils and 1 jird (Gerbillinae), 10 house mice (
    MeSH term(s) Humans ; Animals ; Mice ; Pilot Projects ; United Arab Emirates/epidemiology ; Phylogeny ; Gerbillinae ; Middle East Respiratory Syndrome Coronavirus ; Hemorrhagic Fever Virus, Crimean-Congo ; Hemorrhagic Fever, Crimean
    Language English
    Publishing date 2023-03-07
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v15030695
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Vaccination against Borna Disease: Overview, Vaccine Virus Characterization and Investigation of Live and Inactivated Vaccines.

    Dürrwald, Ralf / Kolodziejek, Jolanta / Oh, Djin-Ye / Herzog, Sibylle / Liebermann, Heinrich / Osterrieder, Nikolaus / Nowotny, Norbert

    Viruses

    2022  Volume 14, Issue 12

    Abstract: 1) Background: Vaccination of horses and sheep against Borna disease (BD) was common in endemic areas of Germany in the 20th century but was abandoned in the early 1990s. The recent occurrence of fatal cases of human encephalitis due to Borna disease ... ...

    Abstract (1) Background: Vaccination of horses and sheep against Borna disease (BD) was common in endemic areas of Germany in the 20th century but was abandoned in the early 1990s. The recent occurrence of fatal cases of human encephalitis due to Borna disease virus 1 (BoDV-1) has rekindled the interest in vaccination. (2) Methods: The full genomes of the BD live vaccine viruses "Dessau" and "Giessen" were sequenced and analyzed for the first time. All vaccination experiments followed a proof-of-concept approach. Dose-titration infection experiments were performed in rabbits, based on both cell culture- and brain-derived viruses at various doses. Inactivated vaccines against BD were produced from concentrated cell culture supernatants and investigated in rabbits and horses. The BoDV-1 live vaccine "Dessau" was administered to horses and antibody profiles were determined. (3) Results: The BD live vaccine viruses "Dessau" and "Giessen" belong to clusters 3 and 4 of BoDV-1. Whereas the "Giessen" virus does not differ substantially from field viruses, the "Dessau" virus shows striking differences in the M gene and the N-terminal part of the G gene. Rabbits infected with high doses of cell-cultured virus developed neutralizing antibodies and were protected from disease, whereas rabbits infected with low doses of cell-cultured virus, or with brain-derived virus did not. Inactivated vaccines were administered to rabbits and horses, following pre-defined vaccination schemes consisting of three vaccine doses of either adjuvanted or nonadjuvanted inactivated virus. Their immunogenicity and protective efficacy were compared to the BD live vaccine "Dessau". Seventy per cent of horses vaccinated with the BD live vaccine "Dessau" developed neutralizing antibodies after vaccination. (4) Conclusion: Despite a complex evasion of immunological responses by bornaviruses, some vaccination approaches can protect against clinical disease. For optimal effectiveness, vaccines should be administered at high doses, following vaccination schemes consisting of three vaccine doses as basic immunization. Further investigations are necessary in order to investigate and improve protection against infection and to avoid side effects.
    MeSH term(s) Animals ; Humans ; Rabbits ; Horses ; Sheep ; Vaccines, Inactivated ; Borna Disease ; Antibodies, Neutralizing ; Vaccination/veterinary ; Encephalitis ; Antibodies, Viral
    Chemical Substances Vaccines, Inactivated ; Antibodies, Neutralizing ; Antibodies, Viral
    Language English
    Publishing date 2022-12-02
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v14122706
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article: Peptidomic Analysis of Skin Secretions of the Caribbean Frogs

    Barran, Gervonne / Kolodziejek, Jolanta / Coquet, Laurent / Leprince, Jérôme / Jouenne, Thierry / Nowotny, Norbert / Conlon, J Michael / Mechkarska, Milena

    Antibiotics (Basel, Switzerland)

    2020  Volume 9, Issue 10

    Abstract: Ocellatins are peptides produced in the skins of frogs belonging to the ... ...

    Abstract Ocellatins are peptides produced in the skins of frogs belonging to the genus
    Language English
    Publishing date 2020-10-20
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2681345-2
    ISSN 2079-6382
    ISSN 2079-6382
    DOI 10.3390/antibiotics9100718
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Capillaria hepatica (syn. Calodium hepaticum) as a Cause of Asymptomatic Liver Mass.

    Manor, Uri / Doviner, Victoria / Kolodziejek, Jolanta / Weidinger, Pia / Dagan, Amir / Ben-Haim, Menahem / Rokah, Merav / Nowotny, Norbert / Boleslavsky, Daniel

    The American journal of tropical medicine and hygiene

    2021  Volume 105, Issue 1, Page(s) 204–206

    Abstract: Capillaria hepatica (syn. Calodium hepaticum) is a parasitic nematode of rodents, rarely infecting humans. An asymptomatic Israeli adult male with extensive travel history was diagnosed with a liver mass on routine post-thymectomy follow-up. Imaging and ... ...

    Abstract Capillaria hepatica (syn. Calodium hepaticum) is a parasitic nematode of rodents, rarely infecting humans. An asymptomatic Israeli adult male with extensive travel history was diagnosed with a liver mass on routine post-thymectomy follow-up. Imaging and computer tomography (CT) guided biopsy were inconclusive. Surgical excision revealed an eosinophilic granuloma with fragments of a nematode suspected to be C. hepatica. Molecular methods verified the diagnosis, and the patient was treated empirically. This is the first case of hepatic capillariasis described in Israel, and the first to be diagnosed using molecular methods.
    MeSH term(s) Animals ; Asymptomatic Diseases/therapy ; Enoplida/isolation & purification ; Enoplida Infections/diagnosis ; Granuloma/diagnosis ; Granuloma/diagnostic imaging ; Granuloma/surgery ; Humans ; Israel ; Liver Diseases, Parasitic/diagnosis ; Male ; Middle Aged ; Treatment Outcome
    Language English
    Publishing date 2021-05-17
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 2942-7
    ISSN 1476-1645 ; 0002-9637
    ISSN (online) 1476-1645
    ISSN 0002-9637
    DOI 10.4269/ajtmh.21-0120
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: MERS-CoV Found in

    Weidinger, Pia / Kolodziejek, Jolanta / Loney, Tom / Kannan, Dafalla O / Osman, Babiker Mohammed / Khafaga, Tamer / Howarth, Brigitte / Sher Shah, Moayyed / Mazrooei, Hessa / Wolf, Nadine / Karuvantevida, Noushad / Abou Tayoun, Ahmad / Alsheikh-Ali, Alawi / Camp, Jeremy V / Nowotny, Norbert

    Viruses

    2023  Volume 15, Issue 6

    Abstract: The main mode of transmission of Middle East respiratory syndrome-related coronavirus (MERS-CoV) between dromedaries is likely via the respiratory route. However, there must be other modes to explain how the infection is brought to MERS-CoV-negative ... ...

    Abstract The main mode of transmission of Middle East respiratory syndrome-related coronavirus (MERS-CoV) between dromedaries is likely via the respiratory route. However, there must be other modes to explain how the infection is brought to MERS-CoV-negative closed herds, such as transmission by ticks. Here, we present a study performed at three different locations in the United Arab Emirates (UAE) involving 215 dromedary camels (
    MeSH term(s) Animals ; Middle East Respiratory Syndrome Coronavirus/genetics ; Camelus ; Livestock ; Coronavirus Infections/epidemiology ; Coronavirus Infections/veterinary ; Ticks ; United Arab Emirates/epidemiology ; Ixodidae ; RNA
    Chemical Substances RNA (63231-63-0)
    Language English
    Publishing date 2023-05-30
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v15061288
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: West Nile Virus and Tick-Borne Encephalitis Virus Are Endemic in Equids in Eastern Austria.

    de Heus, Phebe / Kolodziejek, Jolanta / Hubálek, Zdenĕk / Dimmel, Katharina / Racher, Victoria / Nowotny, Norbert / Cavalleri, Jessika-M V

    Viruses

    2021  Volume 13, Issue 9

    Abstract: The emergence of West Nile virus (WNV) and Usutu virus (USUV) in addition to the autochthonous tick-borne encephalitis virus (TBEV) in Europe causes rising concern for public and animal health. The first equine case of West Nile neuroinvasive disease in ... ...

    Abstract The emergence of West Nile virus (WNV) and Usutu virus (USUV) in addition to the autochthonous tick-borne encephalitis virus (TBEV) in Europe causes rising concern for public and animal health. The first equine case of West Nile neuroinvasive disease in Austria was diagnosed in 2016. As a consequence, a cross-sectional seroprevalence study was conducted in 2017, including 348 equids from eastern Austria. Serum samples reactive by ELISA for either flavivirus immunoglobulin G or M were further analyzed with the plaque reduction neutralization test (PRNT-80) to identify the specific etiologic agent. Neutralizing antibody prevalences excluding vaccinated equids were found to be 5.3% for WNV, 15.5% for TBEV, 0% for USUV, and 1.2% for WNV from autochthonous origin. Additionally, reverse transcription quantitative polymerase chain reaction (RT-qPCR) was performed to detect WNV nucleic acid in horse sera and was found to be negative in all cases. Risk factor analysis did not identify any factors significantly associated with seropositivity.
    MeSH term(s) Animals ; Antibodies, Viral/blood ; Austria/epidemiology ; Cross-Sectional Studies ; Encephalitis Viruses, Tick-Borne/immunology ; Encephalitis, Tick-Borne/epidemiology ; Encephalitis, Tick-Borne/veterinary ; Endemic Diseases/veterinary ; Equidae/virology ; Female ; Flavivirus/immunology ; Flavivirus Infections/epidemiology ; Flavivirus Infections/veterinary ; Horse Diseases/epidemiology ; Horses ; Male ; Risk Factors ; Seroepidemiologic Studies ; West Nile Fever/epidemiology ; West Nile Fever/veterinary ; West Nile virus/immunology
    Chemical Substances Antibodies, Viral
    Language English
    Publishing date 2021-09-19
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v13091873
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article: Targeted surveillance reveals native and invasive mosquito species infected with Usutu virus

    Camp, Jeremy V / Kolodziejek, Jolanta / Nowotny, Norbert

    Parasites & vectors. 2019 Dec., v. 12, no. 1

    2019  

    Abstract: BACKGROUND: The emergence of Usutu virus (USUV) in Europe was first reported in Austria, 2001, and the virus has since spread to many European countries. Initial outbreaks are marked by a mass die-off of European blackbirds (Turdus merula) and other bird ...

    Abstract BACKGROUND: The emergence of Usutu virus (USUV) in Europe was first reported in Austria, 2001, and the virus has since spread to many European countries. Initial outbreaks are marked by a mass die-off of European blackbirds (Turdus merula) and other bird species. During outbreaks, the virus has been detected in pools of Culex pipiens mosquitoes, and these mosquitoes are probably the most important enzootic vectors. Beginning in 2017, a second wave of blackbird deaths associated with USUV was observed in eastern Austria; the affected areas expanded to the Austrian federal states of Styria in the south and to Upper Austria in the west in 2018. We sampled the potential vector population at selected sites of bird deaths in 2018 in order to identify infected mosquitoes. RESULTS: We detected USUV RNA in 16 out of 19 pools of Cx. pipiens/Cx. torrentium mosquitoes at sites of USUV-linked blackbird mortality in Linz and Graz, Austria. A disseminated virus infection was detected in individuals from selected pools, suggesting that Cx. pipiens form pipiens was the principal vector. In addition to a high rate of infected Cx. pipiens collected from Graz, a disseminated virus infection was detected in a pool of Aedes japonicus japonicus. CONCLUSIONS: We show herein that naturally-infected mosquitoes at foci of USUV activity are primarily Cx. pipiens form pipiens. In addition, we report the first natural infection of Ae. j. japonicus with USUV, suggesting that it may be involved in the epizootic transmission of USUV in Europe. Ae. j. japonicus is an invasive mosquito whose range is expanding in Europe.
    Keywords Culex pipiens ; Ochlerotatus japonicus japonicus ; RNA ; Turdus merula ; Usutu virus ; birds ; die-off ; enzootic diseases ; epizootic diseases ; indigenous species ; invasive species ; monitoring ; viruses ; Austria
    Language English
    Dates of publication 2019-12
    Size p. 46.
    Publishing place BioMed Central
    Document type Article
    ZDB-ID 2409480-8
    ISSN 1756-3305
    ISSN 1756-3305
    DOI 10.1186/s13071-019-3316-z
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  10. Article ; Online: MERS-CoV in sheep, goats, and cattle, United Arab Emirates, 2019: Virological and serological investigations reveal an accidental spillover from dromedaries.

    Weidinger, Pia / Kolodziejek, Jolanta / Camp, Jeremy V / Loney, Tom / Kannan, Dafalla O / Ramaswamy, Sathishkumar / Tayoun, Ahmad Abou / Corman, Victor M / Nowotny, Norbert

    Transboundary and emerging diseases

    2021  Volume 69, Issue 5, Page(s) 3066–3072

    Abstract: The recent COVID-19 pandemic has demonstrated again the global threat posed by emerging zoonotic coronaviruses. During the past two decades alone, humans have experienced the emergence of several coronaviruses, such as SARS-CoV in 2003, MERS-CoV in 2012, ...

    Abstract The recent COVID-19 pandemic has demonstrated again the global threat posed by emerging zoonotic coronaviruses. During the past two decades alone, humans have experienced the emergence of several coronaviruses, such as SARS-CoV in 2003, MERS-CoV in 2012, and SARS-CoV-2 in 2019. To date, MERS-CoV has been detected in 27 countries, with a case fatality ratio of approximately 34.5%. Similar to other coronaviruses, MERS-CoV presumably originated from bats; however, the main reservoir and primary source of human infections are dromedary camels. Other species within the Camelidae family, such as Bactrian camels, alpacas, and llamas, seem to be susceptible to the infection as well, although to a lesser extent. In contrast, susceptibility studies on sheep, goats, cattle, pigs, chickens, and horses obtained divergent results. In the present study, we tested nasal swabs and/or sera from 55 sheep, 45 goats, and 52 cattle, collected at the largest livestock market in the United Arab Emirates, where dromedaries are also traded, for the presence of MERS-CoV nucleic acid by RT-qPCR, and for specific antibodies by immunofluorescence assay. All sera were negative for MERS-CoV-reactive antibodies, but the nasal swab of one sheep (1.8%) repeatedly tested positive for MERS-CoV nucleic acid. Next generation sequencing (NGS) of the complete N gene of the sheep-derived MERS-CoV revealed >99% nucleotide identity to MERS-CoV sequences of five dromedaries in nearby pens and to three reference sequences. The NGS sequence of the sheep-derived MERS-CoV was confirmed by conventional RT-PCR of a part of the N gene and subsequent Sanger sequencing. All MERS-CoV sequences clustered within clade B, lineage 5. In conclusion, our study shows that noncamelid livestock, such as sheep, goats, and cattle do not play a major role in MERS-CoV epidemiology. The one sheep that tested positive most likely reflects an accidental viral spillover event from infected dromedaries in nearby pens.
    MeSH term(s) Animals ; COVID-19/veterinary ; Camelids, New World ; Camelus ; Cattle ; Cattle Diseases/epidemiology ; Chickens ; Goat Diseases/epidemiology ; Goats ; Horse Diseases/epidemiology ; Horses ; Humans ; Livestock ; Middle East Respiratory Syndrome Coronavirus/genetics ; Nucleic Acids ; Nucleotides ; Pandemics ; SARS-CoV-2 ; Sheep ; Sheep Diseases/epidemiology ; Swine ; Swine Diseases/epidemiology ; United Arab Emirates/epidemiology
    Chemical Substances Nucleic Acids ; Nucleotides
    Language English
    Publishing date 2021-09-08
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2414822-2
    ISSN 1865-1682 ; 1865-1674
    ISSN (online) 1865-1682
    ISSN 1865-1674
    DOI 10.1111/tbed.14306
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top