LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 85

Search options

  1. Article ; Online: Reduced T-cell densities in cranial nerves of patients who died with SARS-CoV-2 infection.

    Bremer, Juliane / Friemann, Johannes / von Stillfried, Saskia / Boor, Peter / Weis, Joachim

    Acta neuropathologica communications

    2023  Volume 11, Issue 1, Page(s) 10

    MeSH term(s) Humans ; COVID-19 ; T-Lymphocytes ; SARS-CoV-2 ; Cranial Nerves ; Cell Count
    Language English
    Publishing date 2023-01-14
    Publishing country England
    Document type Letter ; Research Support, Non-U.S. Gov't
    ZDB-ID 2715589-4
    ISSN 2051-5960 ; 2051-5960
    ISSN (online) 2051-5960
    ISSN 2051-5960
    DOI 10.1186/s40478-022-01502-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Nachweismethoden von SARS-CoV-2 in Gewebe.

    von Stillfried, Saskia / Boor, Peter

    Der Pathologe

    2021  Volume 42, Issue 2, Page(s) 208–215

    Abstract: Background: Analyses for the presence of SARS-CoV‑2 in the tissues of COVID-19 patients is important in order to improve our understanding of the disease pathophysiology for interpretation of diagnostic histopathological findings in autopsies, biopsies, ...

    Title translation Methods of SARS-CoV-2 detection in tissue.
    Abstract Background: Analyses for the presence of SARS-CoV‑2 in the tissues of COVID-19 patients is important in order to improve our understanding of the disease pathophysiology for interpretation of diagnostic histopathological findings in autopsies, biopsies, or surgical specimens and to assess the potential for occupational infectious hazard.
    Material and methods: In this review we identified 136 published studies in PubMed's curated literature database LitCovid on SARS-CoV‑2 detection methods in tissues and evaluated them regarding sources of error, specificity, and sensitivity of the methods, taking into account our own experience.
    Results: Currently, no sufficiently specific histomorphological alterations or diagnostic features for COVID-19 are known. Therefore, three approaches for SARS-CoV‑2 detection are used: RNA, proteins/antigens, or morphological detection by electron microscopy. In the preanalytical phase, the dominant source of error is tissue quality, especially the different intervals between sample collection and processing or fixation (and its duration) and specifically the interval between death and sample collection in autopsies. However, this information is found in less than half of the studies (e.g., in only 42% of autopsy studies). Our own experience and first studies prove the significantly higher sensitivity and specificity of RNA-based detection methods compared to antigen or protein detection by immunohistochemistry or immunofluorescence. Detection by electron microscopy is time consuming and difficult to interpret.
    Conclusions: Different methods are available for the detection of SARS-CoV‑2 in tissue. Currently, RNA detection by RT-PCR is the method of choice. However, extensive validation studies and method harmonization are not available and are absolutely necessary.
    MeSH term(s) COVID-19 ; Humans ; RNA, Viral ; SARS-CoV-2 ; Sensitivity and Specificity
    Chemical Substances RNA, Viral
    Language German
    Publishing date 2021-03-01
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 135954-x
    ISSN 1432-1963 ; 0172-8113
    ISSN (online) 1432-1963
    ISSN 0172-8113
    DOI 10.1007/s00292-021-00919-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Detection methods for SARS-CoV-2 in tissue.

    von Stillfried, Saskia / Boor, Peter

    Der Pathologe

    2021  Volume 42, Issue Suppl 1, Page(s) 81–88

    Abstract: Background: Analyses for the presence of SARS-CoV‑2 in the tissues of COVID-19 patients is important in order to improve our understanding of the disease pathophysiology for interpretation of diagnostic histopathological findings in autopsies, biopsies, ...

    Title translation Nachweismethoden von SARS-CoV-2 in Gewebe. Englische Version.
    Abstract Background: Analyses for the presence of SARS-CoV‑2 in the tissues of COVID-19 patients is important in order to improve our understanding of the disease pathophysiology for interpretation of diagnostic histopathological findings in autopsies, biopsies, or surgical specimens and to assess the potential for occupational infectious hazard.
    Material and methods: In this review we identified 136 published studies in PubMed's curated literature database LitCovid on SARS-CoV‑2 detection methods in tissues and evaluated them regarding sources of error, specificity, and sensitivity of the methods, taking into account our own experience.
    Results: Currently, no sufficiently specific histomorphological alterations or diagnostic features for COVID-19 are known. Therefore, three approaches for SARS-CoV‑2 detection are used: RNA, proteins/antigens, or morphological detection by electron microscopy. In the preanalytical phase, the dominant source of error is tissue quality, especially the different intervals between sample collection and processing or fixation (and its duration) and specifically the interval between death and sample collection in autopsies. However, this information is found in less than half of the studies (e.g., in only 42% of autopsy studies). Our own experience and first studies prove the significantly higher sensitivity and specificity of RNA-based detection methods compared to antigen or protein detection by immunohistochemistry or immunofluorescence. Detection by electron microscopy is time consuming and difficult to interpret.
    Conclusions: Different methods are available for the detection of SARS-CoV‑2 in tissue. Currently, RNA detection by RT-PCR is the method of choice. However, extensive validation studies and method harmonization are not available and are absolutely necessary.
    MeSH term(s) Autopsy ; COVID-19 ; Humans ; RNA, Viral ; SARS-CoV-2 ; Sensitivity and Specificity
    Chemical Substances RNA, Viral
    Language English
    Publishing date 2021-03-26
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 135954-x
    ISSN 1432-1963 ; 0172-8113
    ISSN (online) 1432-1963
    ISSN 0172-8113
    DOI 10.1007/s00292-021-00920-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Entwicklung eines kooperativen Obduktionsnetzwerks aus Pathologie, Neuropathologie und Rechtsmedizin.

    von Stillfried, Saskia / Boor, Peter

    Der Pathologe

    2021  Volume 42, Issue Suppl 2, Page(s) 129–134

    Abstract: Background: Autopsies are an important tool for understanding novel diseases, including COVID-19.: Materials and methods: The German Registry of COVID-19 Autopsies (DeRegCOVID) was established and launched in April 2020. DeRegCOVID acts as the ... ...

    Title translation Development of a cooperative autopsy network of pathology, neuropathology and forensic medicine.
    Abstract Background: Autopsies are an important tool for understanding novel diseases, including COVID-19.
    Materials and methods: The German Registry of COVID-19 Autopsies (DeRegCOVID) was established and launched in April 2020. DeRegCOVID acts as the electronic backbone of the German Network for Autopsies in Pandemics (DEFEAT PANDEMIcs), which started in September 2020.
    Results: The results of DeRegCOVID and DEFEAT PANDEMIcs are characterized by an unprecedented collaboration of more than 35 university and non-university autopsy centers linking pathological, neuropathological, and forensic medicine institutes. DeRegCOVID has evolved, adapted to new challenges, and currently contains the largest international autopsy dataset. After only a short period of operation, more than 80 publications have been produced, which have contributed to the understanding of the pathogenesis of COVID-19, e.g., through the discovery of thromboembolic events, multiorgan tropism, and NeuroCovid-19. The autopsy centers have carried out extensive educational work and, beyond the scientific gain in knowledge, have explained to politicians and the general public the essential role of autopsies in pandemic management. To further develop autopsy-driven research, a continuation of DEFEAT PANDEMIcs was conceived, the National Autopsy Network (NATON).
    Conclusions: The registry and network, in which all interested centers can participate, have demonstrated the value of networked medical research and the high value of autopsy for medicine.
    MeSH term(s) Autopsy ; COVID-19 ; Forensic Medicine ; Humans ; Pandemics ; SARS-CoV-2
    Language German
    Publishing date 2021-10-29
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 135954-x
    ISSN 1432-1963 ; 0172-8113
    ISSN (online) 1432-1963
    ISSN 0172-8113
    DOI 10.1007/s00292-021-01004-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Entwicklung und Fortschritte des Nationalen Obduktionsnetzwerks (NATON).

    Windeck, Svenja / Allgoewer, Kristina / von Stillfried, Saskia / Triefenbach, Lucas / Nienaber, Ulrike / Bülow, Roman David / Röhrig, Rainer / Ondruschka, Benjamin / Boor, Peter

    Pathologie (Heidelberg, Germany)

    2024  Volume 45, Issue 3, Page(s) 203–210

    Abstract: Background: Autopsies have long been considered the gold standard for quality assurance in medicine, yet their significance in basic research has been relatively overlooked. The COVID-19 pandemic underscored the potential of autopsies in understanding ... ...

    Title translation Development and progress of the National Autopsy Network (NATON).
    Abstract Background: Autopsies have long been considered the gold standard for quality assurance in medicine, yet their significance in basic research has been relatively overlooked. The COVID-19 pandemic underscored the potential of autopsies in understanding pathophysiology, therapy, and disease management. In response, the German Registry for COVID-19 Autopsies (DeRegCOVID) was established in April 2020, followed by the DEFEAT PANDEMIcs consortium (2020-2021), which evolved into the National Autopsy Network (NATON).
    Deregcovid: DeRegCOVID collected and analyzed autopsy data from COVID-19 deceased in Germany over three years, serving as the largest national multicenter autopsy study. Results identified crucial factors in severe/fatal cases, such as pulmonary vascular thromboemboli and the intricate virus-immune interplay. DeRegCOVID served as a central hub for data analysis, research inquiries, and public communication, playing a vital role in informing policy changes and responding to health authorities.
    Naton: Initiated by the Network University Medicine (NUM), NATON emerged as a sustainable infrastructure for autopsy-based research. NATON aims to provide a data and method platform, fostering collaboration across pathology, neuropathology, and legal medicine. Its structure supports a swift feedback loop between research, patient care, and pandemic management.
    Conclusion: DeRegCOVID has significantly contributed to understanding COVID-19 pathophysiology, leading to the establishment of NATON. The National Autopsy Registry (NAREG), as its successor, embodies a modular and adaptable approach, aiming to enhance autopsy-based research collaboration nationally and, potentially, internationally.
    MeSH term(s) Humans ; COVID-19/epidemiology ; COVID-19/pathology ; Germany/epidemiology ; Autopsy ; Registries ; Pandemics ; SARS-CoV-2
    Language German
    Publishing date 2024-03-01
    Publishing country Germany
    Document type English Abstract ; Journal Article ; Review
    ISSN 2731-7196
    ISSN (online) 2731-7196
    DOI 10.1007/s00292-024-01307-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Update zur kooperativen autopsiebasierten Forschung in der deutschen Pathologie, Neuropathologie und Gerichtsmedizin.

    von Stillfried, Saskia / Freeborn, Benita / Windeck, Svenja / Boor, Peter

    Pathologie (Heidelberg, Germany)

    2022  

    Abstract: Background: Autopsies are a valuable tool for understanding disease, including COVID-19.: Materials and methods: The German Registry of COVID-19 Autopsies (DeRegCOVID), established in April 2020, serves as the electronic backbone of the National ... ...

    Title translation Update on collaborative autopsy-based research in German pathology, neuropathology, and forensic medicine.
    Abstract Background: Autopsies are a valuable tool for understanding disease, including COVID-19.
    Materials and methods: The German Registry of COVID-19 Autopsies (DeRegCOVID), established in April 2020, serves as the electronic backbone of the National Autopsy Network (NATON), launched in early 2022 following DEFEAT PANDEMIcs.
    Results: The NATON consortium's interconnected, collaborative autopsy research is enabled by an unprecedented collaboration of 138 individuals at more than 35 German university and non-university autopsy centers through which pathology, neuropathology, and forensic medicine autopsy data including data on biomaterials are collected in DeRegCOVID and tissue-based research and methods development are conducted. More than 145 publications have now emerged from participating autopsy centers, highlighting various basic science and clinical aspects of COVID-19, such as thromboembolic events, organ tropism, SARS-CoV‑2 detection methods, and infectivity of SARS-CoV-2 at autopsy.
    Conclusions: Participating centers have demonstrated the high value of autopsy and autopsy-derived data and biomaterials to modern medicine. The planned long-term continuation and further development of the registry and network, as well as the open and participatory design, will allow the involvement of all interested partners.
    Language German
    Publishing date 2022-09-16
    Publishing country Germany
    Document type English Abstract ; Journal Article ; Review
    ISSN 2731-7196
    ISSN (online) 2731-7196
    DOI 10.1007/s00292-022-01117-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: First report from the German COVID-19 autopsy registry.

    von Stillfried, Saskia / Bülow, Roman David / Röhrig, Rainer / Boor, Peter

    The Lancet regional health. Europe

    2022  Volume 15, Page(s) 100330

    Abstract: Background: Autopsies are an important tool in medicine, dissecting disease pathophysiology and causes of death. In COVID-19, autopsies revealed e.g., the effects on pulmonary (micro)vasculature or the nervous system, systemic viral spread, or the ... ...

    Abstract Background: Autopsies are an important tool in medicine, dissecting disease pathophysiology and causes of death. In COVID-19, autopsies revealed e.g., the effects on pulmonary (micro)vasculature or the nervous system, systemic viral spread, or the interplay with the immune system. To facilitate multicentre autopsy-based studies and provide a central hub supporting autopsy centres, researchers, and data analyses and reporting, in April 2020 the German COVID-19 Autopsy Registry (DeRegCOVID) was launched.
    Methods: The electronic registry uses a web-based electronic case report form. Participation is voluntary and biomaterial remains at the respective site (decentralized biobanking). As of October 2021, the registry included N=1129 autopsy cases, with 69271 single data points including information on 18674 available biospecimens gathered from 29 German sites.
    Findings: In the N=1095 eligible records, the male-to-female ratio was 1·8:1, with peaks at 65-69 and 80-84 years in males and >85 years in females. The analysis of the chain of events directly leading to death revealed COVID-19 as the underlying cause of death in 86% of the autopsy cases, whereas in 14% COVID-19 was a concomitant disease. The most common immediate cause of death was diffuse alveolar damage, followed by multi-organ failure. The registry supports several scientific projects, public outreach and provides reports to the federal health authorities, leading to legislative adaptation of the German Infection Protection Act, facilitating the performance of autopsies during pandemics.
    Interpretation: A national autopsy registry can provide multicentre quantitative information on COVID-19 deaths on a national level, supporting medical research, political decision-making and public discussion.
    Funding: German Federal Ministries of Education and Research and Health.Hintergrund: Obduktionen sind ein wichtiges Instrument in der Medizin, um die Pathophysiologie von Krankheiten und Todesursachen zu untersuchen. Im Rahmen von COVID-19 wurden durch Obduktionen z.B. die Auswirkungen auf die pulmonale Mikrovaskulatur, das Nervensystem, die systemische Virusausbreitung, und das Zusammenspiel mit dem Immunsystem untersucht. Um multizentrische, auf Obduktionen basierende Studien zu erleichtern und eine zentrale Anlaufstelle zu schaffen, die Obduktionszentren, Forscher sowie Datenanalysen und -berichte unterstützt, wurde im April 2020 das deutsche COVID-19-Autopsieregister (DeRegCOVID) ins Leben gerufen.Methoden: Das elektronische Register verwendet ein webbasiertes elektronisches Fallberichtsformular. Die Teilnahme ist freiwillig und das Biomaterial verbleibt am jeweiligen Standort (dezentrales Biobanking). Im Oktober 2021 umfasste das Register N=1129 Obduktionsfälle mit 69271 einzelnen Datenpunkten, die Informationen über 18674 verfügbare Bioproben enthielten, die von 29 deutschen Standorten gesammelt wurden.Ergebnisse: In den N=1095 ausgewerteten Datensätzen betrug das Verhältnis von Männern zu Frauen 1,8:1 mit Spitzenwerten bei 65-69 und 80-84 Jahren bei Männern und >85 Jahren bei Frauen. Die Analyse der Sequenz der unmittelbar zum Tod führenden Ereignisse ergab, dass in 86 % der Obduktionsfälle COVID-19 die zugrunde liegende Todesursache war, während in 14 % der Fälle COVID-19 eine Begleiterkrankung war. Die häufigste unmittelbare Todesursache war der diffuse Alveolarschaden, gefolgt von Multiorganversagen. Das Register unterstützt mehrere wissenschaftliche Projekte, die Öffentlichkeitsarbeit und liefert Berichte an die Bundesgesundheitsbehörden, was zu einer Anpassung des deutschen Infektionsschutzgesetzes führte und die Durchführung von Obduktionen in Pandemien erleichtert.Interpretation: Ein nationales Obduktionsregister kann multizentrische quantitative Informationen über COVID-19-Todesfälle auf nationaler Ebene liefern und damit die medizinische Forschung, die politische Entscheidungsfindung und die öffentliche Diskussion unterstützen.Finanzierung: Bundesministerien für Bildung und Forschung und für Gesundheit.
    Language English
    Publishing date 2022-02-18
    Publishing country England
    Document type Journal Article
    ISSN 2666-7762
    ISSN (online) 2666-7762
    DOI 10.1016/j.lanepe.2022.100330
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Clinical, Imaging, and Histopathological Features of Pulmonary Sequelae after Mild COVID-19.

    Gagiannis, Daniel / Hackenbroch, Carsten / Bloch, Wilhelm / Zech, Fabian / Kirchhoff, Frank / Djudjaj, Sonja / von Stillfried, Saskia / Bülow, Roman / Boor, Peter / Steinestel, Konrad

    American journal of respiratory and critical care medicine

    2023  Volume 208, Issue 5, Page(s) 618–621

    MeSH term(s) Humans ; COVID-19 ; Diagnostic Imaging
    Language English
    Publishing date 2023-06-14
    Publishing country United States
    Document type Letter ; Research Support, Non-U.S. Gov't
    ZDB-ID 1180953-x
    ISSN 1535-4970 ; 0003-0805 ; 1073-449X
    ISSN (online) 1535-4970
    ISSN 0003-0805 ; 1073-449X
    DOI 10.1164/rccm.202302-0285LE
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Semiautomated pipeline for quantitative analysis of heart histopathology.

    Droste, Patrick / Wong, Dickson W L / Hohl, Mathias / von Stillfried, Saskia / Klinkhammer, Barbara M / Boor, Peter

    Journal of translational medicine

    2023  Volume 21, Issue 1, Page(s) 666

    Abstract: Background: Heart diseases are among the leading causes of death worldwide, many of which lead to pathological cardiomyocyte hypertrophy and capillary rarefaction in both patients and animal models, the quantification of which is both technically ... ...

    Abstract Background: Heart diseases are among the leading causes of death worldwide, many of which lead to pathological cardiomyocyte hypertrophy and capillary rarefaction in both patients and animal models, the quantification of which is both technically challenging and highly time-consuming. Here we developed a semiautomated pipeline for quantification of the size of cardiomyocytes and capillary density in cardiac histology, termed HeartJ, by generating macros in ImageJ, a broadly used, open-source, Java-based software.
    Methods: We have used modified Gomori silver staining, which is easy to perform and digitize in high throughput, or Fluorescein-labeled lectin staining. The latter can be easily combined with other stainings, allowing additional quantitative analysis on the same section, e.g., the size of cardiomyocyte nuclei, capillary density, or single-cardiomyocyte protein expression. We validated the pipeline in a mouse model of cardiac hypertrophy induced by transverse aortic constriction, and in autopsy samples of patients with and without aortic stenosis.
    Results: In both animals and humans, HeartJ-based histology quantification revealed significant hypertrophy of cardiomyocytes reflecting other parameters of hypertrophy and rarefaction of microvasculature and enabling the analysis of protein expression in individual cardiomyocytes. The analysis also revealed that murine and human cardiomyocytes had similar diameters in health and extent of hypertrophy in disease confirming the translatability of our murine cardiac hypertrophy model. HeartJ enables a rapid analysis that would not be feasible by manual methods. The pipeline has little hardware requirements and is freely available.
    Conclusions: In summary, our analysis pipeline can facilitate effective and objective quantitative histological analyses in preclinical and clinical heart samples.
    MeSH term(s) Humans ; Animals ; Mice ; Myocytes, Cardiac ; Aortic Valve Stenosis ; Cell Nucleus ; Disease Models, Animal ; Cardiomegaly
    Language English
    Publishing date 2023-09-26
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2118570-0
    ISSN 1479-5876 ; 1479-5876
    ISSN (online) 1479-5876
    ISSN 1479-5876
    DOI 10.1186/s12967-023-04544-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Intracranial hemorrhage in COVID-19 patients during extracorporeal membrane oxygenation for acute respiratory failure: a nationwide register study report.

    von Stillfried, Saskia / Bülow, Roman David / Röhrig, Rainer / Meybohm, Patrick / Boor, Peter

    Critical care (London, England)

    2022  Volume 26, Issue 1, Page(s) 83

    Abstract: Background: In severe cases, SARS-CoV-2 infection leads to acute respiratory distress syndrome (ARDS), often treated by extracorporeal membrane oxygenation (ECMO). During ECMO therapy, anticoagulation is crucial to prevent device-associated thrombosis ... ...

    Abstract Background: In severe cases, SARS-CoV-2 infection leads to acute respiratory distress syndrome (ARDS), often treated by extracorporeal membrane oxygenation (ECMO). During ECMO therapy, anticoagulation is crucial to prevent device-associated thrombosis and device failure, however, it is associated with bleeding complications. In COVID-19, additional pathologies, such as endotheliitis, may further increase the risk of bleeding complications. To assess the frequency of bleeding events, we analyzed data from the German COVID-19 autopsy registry (DeRegCOVID).
    Methods: The electronic registry uses a web-based electronic case report form. In November 2021, the registry included N = 1129 confirmed COVID-19 autopsy cases, with data on 63 ECMO autopsy cases and 1066 non-ECMO autopsy cases, contributed from 29 German sites.
    Findings: The registry data showed that ECMO was used in younger male patients and bleeding events occurred much more frequently in ECMO cases compared to non-ECMO cases (56% and 9%, respectively). Similarly, intracranial bleeding (ICB) was documented in 21% of ECMO cases and 3% of non-ECMO cases and was classified as the immediate or underlying cause of death in 78% of ECMO cases and 37% of non-ECMO cases. In ECMO cases, the three most common immediate causes of death were multi-organ failure, ARDS and ICB, and in non-ECMO cases ARDS, multi-organ failure and pulmonary bacterial ± fungal superinfection, ordered by descending frequency.
    Interpretation: Our study suggests the potential value of autopsies and a joint interdisciplinary multicenter (national) approach in addressing fatal complications in COVID-19.
    MeSH term(s) COVID-19/complications ; COVID-19/therapy ; Extracorporeal Membrane Oxygenation/adverse effects ; Humans ; Intracranial Hemorrhages/complications ; Intracranial Hemorrhages/epidemiology ; Male ; Respiratory Distress Syndrome/therapy ; Respiratory Insufficiency/etiology ; Respiratory Insufficiency/therapy ; SARS-CoV-2
    Language English
    Publishing date 2022-03-28
    Publishing country England
    Document type Journal Article ; Multicenter Study ; Research Support, Non-U.S. Gov't
    ZDB-ID 2041406-7
    ISSN 1466-609X ; 1364-8535
    ISSN (online) 1466-609X
    ISSN 1364-8535
    DOI 10.1186/s13054-022-03945-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top