Pathogens and Immunity最新文献

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Historical Highlight: The Luria-Delbrück Fluctuation Test - A Study of the Nature of Bacterial Mutations Conferring Resistance to Infection by Bacteriophage. 历史亮点:卢里亚-德尔布吕克波动试验--噬菌体抗感染细菌突变性质的研究。
Pathogens and Immunity Pub Date : 2024-10-17 eCollection Date: 2024-01-01 DOI: 10.20411/pai.v10i1.763
Neil S Greenspan, Emily N Kukan
{"title":"Historical Highlight: The Luria-Delbrück Fluctuation Test - A Study of the Nature of Bacterial Mutations Conferring Resistance to Infection by Bacteriophage.","authors":"Neil S Greenspan, Emily N Kukan","doi":"10.20411/pai.v10i1.763","DOIUrl":"https://doi.org/10.20411/pai.v10i1.763","url":null,"abstract":"","PeriodicalId":36419,"journal":{"name":"Pathogens and Immunity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11495157/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142509687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Escape of SARS-CoV-2 Variants KP.1.1, LB.1, and KP3.3 From Approved Monoclonal Antibodies. SARS-CoV-2变体KP.1.1、LB.1和KP3.3从获批的单克隆抗体中逃逸。
Pathogens and Immunity Pub Date : 2024-09-30 eCollection Date: 2024-01-01 DOI: 10.20411/pai.v10i1.752
Delphine Planas, Isabelle Staropoli, Cyril Planchais, Emilie Yab, Banujaa Jeyarajah, Yannis Rahou, Matthieu Prot, Florence Guivel-Benhassine, Frederic Lemoine, Vincent Enouf, Etienne Simon-Loriere, Hugo Mouquet, Marie-Anne Rameix-Welti, Olivier Schwartz
{"title":"Escape of SARS-CoV-2 Variants KP.1.1, LB.1, and KP3.3 From Approved Monoclonal Antibodies.","authors":"Delphine Planas, Isabelle Staropoli, Cyril Planchais, Emilie Yab, Banujaa Jeyarajah, Yannis Rahou, Matthieu Prot, Florence Guivel-Benhassine, Frederic Lemoine, Vincent Enouf, Etienne Simon-Loriere, Hugo Mouquet, Marie-Anne Rameix-Welti, Olivier Schwartz","doi":"10.20411/pai.v10i1.752","DOIUrl":"10.20411/pai.v10i1.752","url":null,"abstract":"<p><strong>Background: </strong>First-generation anti-SARS-CoV-2 monoclonal antibodies (mAbs) used for prophylaxis or therapeutic purposes in immunocompromised patients have been withdrawn because of the emergence of resistant Omicron variants. In 2024, 2 novel mAbs, VYD222/Pemivibart and AZD3152/Sipavibart, were approved by health authorities, but their activity against contemporary JN.1 sublineages is poorly characterized.</p><p><strong>Methods: </strong>We isolated authentic JN.1.1, KP.1.1, LB.1, and KP.3.3 viruses and evaluated their sensitivity to neutralization by these mAbs in 2 target cell lines.</p><p><strong>Results: </strong>Compared to ancestral strains, VYD222/Pemivibart remained moderately active against JN.1 subvariants, with a strong increase of 50% Inhibitory Concentration (IC50), reaching up to 3 to 15 µg/mL for KP3.3. AZD3152/Sipavibart neutralized JN.1.1 but lost antiviral efficacy against KP.1.1, LB.1, and KP3.3.</p><p><strong>Conclusions: </strong>Our results highlight the need for a close clinical monitoring of VYD222/Pemivibart and raise concerns about the clinical efficacy of AZD3152/Sipavibart.</p>","PeriodicalId":36419,"journal":{"name":"Pathogens and Immunity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11464000/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142401550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Jonathan Yewdell Discusses Viral Immunology, Vaccine Development, Navigating a Scientific Career, and Offers Perspectives on Transforming Scientific Publishing and Research Education. 乔纳森-尤德尔(Jonathan Yewdell)讨论病毒免疫学、疫苗开发、科学职业生涯导航,并对科学出版和研究教育的变革提出看法。
Pathogens and Immunity Pub Date : 2024-09-27 eCollection Date: 2024-01-01 DOI: 10.20411/pai.v9i2.753
Neil S Greenspan
{"title":"Jonathan Yewdell Discusses Viral Immunology, Vaccine Development, Navigating a Scientific Career, and Offers Perspectives on Transforming Scientific Publishing and Research Education.","authors":"Neil S Greenspan","doi":"10.20411/pai.v9i2.753","DOIUrl":"https://doi.org/10.20411/pai.v9i2.753","url":null,"abstract":"<p><p>In this interview, Jonathan Yewdell talks with <i>Pathogens and Immunity</i> senior editor Neil Green-span about the evolution of viral immunology, highlighting his work and the contributions of other influential scientists. He emphasizes the importance of passion and collaboration in scientific research, illustrating the potential for groundbreaking discoveries through networking. He provides advice on navigating a scientific career, stressing the significance of strong mentorship. And he shares his perspective on transforming the scientific publishing industry and research education.</p>","PeriodicalId":36419,"journal":{"name":"Pathogens and Immunity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11460944/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142393991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Ceftaroline, Ceftazidime/Avibactam, Ceftolozane/Tazobactam, and Meropenem/Vaborbactam on Establishment of Colonization by Vancomycin-Resistant Enterococci and Klebsiella pneumoniae in Mice. 头孢他啶、头孢唑肟/阿维巴坦、头孢洛赞/他唑巴坦和美罗培南/伐巴坦对耐万古霉素肠球菌和肺炎克雷伯菌在小鼠体内定植的影响
Pathogens and Immunity Pub Date : 2024-09-24 eCollection Date: 2024-01-01 DOI: 10.20411/pai.v9i2.711
Bryan S Hausman, Samir Memic, Jennifer L Cadnum, Elizabeth G Zink, Brigid M Wilson, Curtis J Donskey
{"title":"Effect of Ceftaroline, Ceftazidime/Avibactam, Ceftolozane/Tazobactam, and Meropenem/Vaborbactam on Establishment of Colonization by Vancomycin-Resistant Enterococci and <i>Klebsiella pneumoniae</i> in Mice.","authors":"Bryan S Hausman, Samir Memic, Jennifer L Cadnum, Elizabeth G Zink, Brigid M Wilson, Curtis J Donskey","doi":"10.20411/pai.v9i2.711","DOIUrl":"https://doi.org/10.20411/pai.v9i2.711","url":null,"abstract":"<p><strong>Background: </strong>The potential for promotion of intestinal colonization with healthcare-associated pathogens by new antibiotics used to treat infections due to multidrug-resistant Gram-negative bacilli is unclear.</p><p><strong>Methods: </strong>Mice treated for 3 days with daily subcutaneous phosphate-buffered saline (control), ceftazidime/avibactam, ceftolozane/tazobactam, ceftaroline, and meropenem/vaborbactam were challenged with 10,000 colony-forming units (CFU) of vancomycin-resistant <i>Enterococcus</i> (VRE) resistant to each of the antibioics or carbapenemase-producing <i>Klebsiella pneumoniae</i> 1 day after the final treatment dose. The concentrations of VRE or <i>K. pneumoniae</i> in stool were measured on days 1, 3, 6, and 15 after challenge.</p><p><strong>Results: </strong>Control mice had transient low levels of VRE or <i>K. pneumoniae</i> (<3 log<sub>10</sub> CFU/g) detected in stool with negative cultures on days 6 and 15 after challenge. In comparison to control mice, each of the antibiotics promoted establishment of high-density colonization with VRE (mean concentration, >8 log<sub>10</sub> CFU/g of stool on day 1 after challenge) that persisted at >4 log<sub>10</sub> CFU/g of stool through day 15 (<i>P</i><0.01). In comparison to control mice, meropenem/vaborbactam and ceftaroline promoted high-density colonization with <i>K. pneumoniae</i> (peak concentration, >8 log<sub>10</sub> CFU/g of stool) (<i>P</i><0.01), ceftolozane/tazobactam promoted colonization to a lesser degree (peak concentration, >5 log<sub>10</sub> CFU/g of stool), and ceftazidime/avibactam did not promote colonization (<i>P</i>>0.05).</p><p><strong>Conclusions: </strong>Our results suggest that several beta-lactam antibiotics recently developed for treatment of infections with resistant Gram-negative bacilli have the potential to promote colonization by healthcare-associated pathogens. Additional studies are needed to examine the impact of these agents in patients.</p>","PeriodicalId":36419,"journal":{"name":"Pathogens and Immunity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11432534/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
People Living With HIV Have More Intact HIV DNA in Circulating CD4+ T Cells if They Have History of Pulmonary Tuberculosis. 有肺结核病史的艾滋病病毒感染者,其循环 CD4+ T 细胞中的完整 HIV DNA 更多。
Pathogens and Immunity Pub Date : 2024-09-23 eCollection Date: 2024-01-01 DOI: 10.20411/pai.v9i2.722
Marc Antoine Jean Juste, Yvetot Joseph, Dominique Lespinasse, Alexandra Apollon, Parmida Jamshidi, Myung Hee Lee, Maureen Ward, Esther Brill, Yanique Duffus, Uche Chukwukere, Ali Danesh, Winiffer Conce Alberto, Daniel W Fitzgerald, Jean W Pape, R Brad Jones, Kathryn Dupnik
{"title":"People Living With HIV Have More Intact HIV DNA in Circulating CD4+ T Cells if They Have History of Pulmonary Tuberculosis.","authors":"Marc Antoine Jean Juste, Yvetot Joseph, Dominique Lespinasse, Alexandra Apollon, Parmida Jamshidi, Myung Hee Lee, Maureen Ward, Esther Brill, Yanique Duffus, Uche Chukwukere, Ali Danesh, Winiffer Conce Alberto, Daniel W Fitzgerald, Jean W Pape, R Brad Jones, Kathryn Dupnik","doi":"10.20411/pai.v9i2.722","DOIUrl":"10.20411/pai.v9i2.722","url":null,"abstract":"<p><strong>Background: </strong>A primary barrier to curing HIV is the HIV reservoir. The leading infectious cause of death worldwide for people living with HIV is tuberculosis (TB), but we do not know how TB impacts the HIV reservoir.</p><p><strong>Methods: </strong>Participants in identification and validation cohorts were selected from previously enrolled studies at Groupe Haïtien d'Étude du Sarcome de Kaposi et des Infections Opportunistes (GHESKIO) in Port au Prince, Haiti. Intact and non-intact proviral DNA were quantified using droplet digital PCR of peripheral blood mononuclear cell (PBMC)-derived CD4+ T cells. Kruskal-Wallis tests were used to compare medians with tobit regression for censoring.</p><p><strong>Results: </strong>In the identification cohort, we found that people living with HIV with a history of active pulmonary TB (n=19) had higher levels of intact provirus than people living with HIV without a history of active TB (n=47) (median 762; IQR, 183-1173 vs 117; IQR, 24-279 intact provirus per million CD4, respectively; <i>P</i>=0.0001). This difference also was seen in the validation cohort (n=31), (median 102; IQR, 0-737 vs 0; IQR, 0-24.5 intact provirus per million CD4, <i>P</i>=0.03) for TB vs no-TB history groups, respectively. The frequencies of CD4+ T cells with any detectable proviral fragment was directly proportional to the levels of interleukin-1 beta (r=0.524, <i>P</i>= 0.0025) and interleukin-2 (r=0.622, <i>P</i>=0.0002).</p><p><strong>Conclusions: </strong>People living with HIV with a history of active pulmonary TB have more HIV pro-virus in their circulating CD4+ T cells, even years after TB cure. We need to characterize which CD4+ T cells are harboring intact provirus to consider the impact of T cell-targeting HIV cure interventions for people living in TB-endemic areas.</p>","PeriodicalId":36419,"journal":{"name":"Pathogens and Immunity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11432494/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dr. Anthony Fauci Shares Insights on His Career and Leadership of the NIAID. 安东尼-福奇博士分享他的职业生涯和领导美国国立卫生研究院的心得。
Pathogens and Immunity Pub Date : 2024-09-16 eCollection Date: 2024-01-01 DOI: 10.20411/pai.v9i2.754
Michael M Lederman, Neil S Greenspan
{"title":"Dr. Anthony Fauci Shares Insights on His Career and Leadership of the NIAID.","authors":"Michael M Lederman, Neil S Greenspan","doi":"10.20411/pai.v9i2.754","DOIUrl":"10.20411/pai.v9i2.754","url":null,"abstract":"","PeriodicalId":36419,"journal":{"name":"Pathogens and Immunity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11418601/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142308696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sensitivity Analysis of C. auris, S. cerevisiae, and C. cladosporioides by Irradiation with Far-UVC, UVC, and UVB. 用远紫外线、紫外线和紫外线辐照 C. auris、S. cerevisiae 和 C. cladosporioides 的敏感性分析。
Pathogens and Immunity Pub Date : 2024-08-21 eCollection Date: 2024-01-01 DOI: 10.20411/pai.v9i2.723
Anna-Maria Gierke, Martin Hessling
{"title":"Sensitivity Analysis of <i>C. auris, S. cerevisiae</i>, and <i>C. cladosporioides</i> by Irradiation with Far-UVC, UVC, and UVB.","authors":"Anna-Maria Gierke, Martin Hessling","doi":"10.20411/pai.v9i2.723","DOIUrl":"10.20411/pai.v9i2.723","url":null,"abstract":"<p><strong>Background: </strong>The World Health Organization has published a list of pathogenic fungi with prior-itizing groups and calls for research and development of antifungal measures, with <i>Candida auris</i> belonging to the group with high priority.</p><p><strong>Methods: </strong>The photosensitivity towards short wavelength ultraviolet irradiation (Far-UVC, UVC, and UVB) was investigated and compared to other yeasts (<i>Saccharomyces cerevisiae</i>) and a mold (<i>Cladosporium cladosporioides</i>). The observed 1-log reduction doses were compared to literature values of other representatives of the genus <i>Candida</i>, but also with <i>S. cerevisiae, Aspergillus niger,</i> and <i>A. fumigatus</i>.</p><p><strong>Results: </strong>For the determined 1-log reduction doses, an increase with higher wavelengths was observed. A 1-log reduction dose of 4.3 mJ/cm<sup>2</sup> was determined for <i>C. auris</i> when irradiated at 222 nm, a dose of 6.1 mJ/cm<sup>2</sup> at 254 nm and a 1-log reduction dose of 51.3 mJ/cm<sup>2</sup> was required when irradiated with UVB.</p><p><strong>Conclusions: </strong>It was observed that <i>S. cerevisiae</i> is a possible surrogate for <i>C. auris</i> for irradiation with Far-UVC and UVB due to close 1-log reduction doses. No surrogate suitability was verified for <i>C. cladosporioides</i> in relation to <i>A. niger</i> and <i>A. fumigatus</i> for irradiation with a wavelength of 254 nm and for <i>A. niger</i> at 222 nm.</p>","PeriodicalId":36419,"journal":{"name":"Pathogens and Immunity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11378758/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142156238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of SARS-CoV-2 Resistance to Antiviral Monoclonal Antibody Therapy on Neutralizing Antibody Response. SARS-CoV-2 对抗病毒单克隆抗体疗法的耐药性对中和抗体反应的影响。
Pathogens and Immunity Pub Date : 2024-08-21 eCollection Date: 2024-01-01 DOI: 10.20411/pai.v9i2.718
Marc-Kendy Paul, Manish C Choudhary, Amy L Heaps, Rinki Deo, Daniela Moisi, Kelley C Gordon, John W Mellors, Carlee Moser, Paul Klekotka, Alan Landay, Judith S Currier, Joseph J Eron, Kara W Chew, Davey M Smith, Scott F Sieg, Urvi M Parikh, Jonathan Z Li
{"title":"Impact of SARS-CoV-2 Resistance to Antiviral Monoclonal Antibody Therapy on Neutralizing Antibody Response.","authors":"Marc-Kendy Paul, Manish C Choudhary, Amy L Heaps, Rinki Deo, Daniela Moisi, Kelley C Gordon, John W Mellors, Carlee Moser, Paul Klekotka, Alan Landay, Judith S Currier, Joseph J Eron, Kara W Chew, Davey M Smith, Scott F Sieg, Urvi M Parikh, Jonathan Z Li","doi":"10.20411/pai.v9i2.718","DOIUrl":"10.20411/pai.v9i2.718","url":null,"abstract":"<p><strong>Background: </strong>Anti-SARS-CoV-2 monoclonal antibodies (mAbs) have played a key role as an anti-viral against SARS-CoV-2, but there is a potential for resistance to develop. The interplay between host antibody responses and the development of monoclonal antibody (mAb) resistance is a critical area of investigation. In this study, we assessed host neutralizing antibody (nAb) responses against both ancestral virus and those with treatment-emergent E484K bamlanivimab resistance mutations.</p><p><strong>Methods: </strong>Study participants were enrolled in the ACTIV-2/Advancing Clinical Therapeutics Globally (ACTG) A5401 phase 2 randomized, placebo-controlled trial of bamlanivimab 700 mg mAb therapy (NCT04518410). Anterior nasal and nasopharyngeal swabs were collected for SARS-CoV-2 RNA testing and S gene next-generation sequencing to identify the E484K bamlanivimab resistance mutation. Serum nAb titers were assessed by pseudovirus neutralization assays.</p><p><strong>Results: </strong>Higher baseline (pre-treatment) nAb titers against either ancestral or E484K virus was associated with lower baseline viral load. Participants with emerging resistance had low levels of nAb titers against either ancestral or E484K nAb at the time of study entry. Participants with emergent E484K resistance developed significantly higher levels of E484K-specific nAb titers compared to mAb-treated individuals who did not develop resistance. All participants who developed the E484K mAb resistance mutation were eventually able to clear the virus.</p><p><strong>Conclusion: </strong>Emerging drug resistance after SARS-CoV-2-specific mAb therapy led to a heightened host neutralizing antibody response to the mAb-resistant variant that was associated with eventual viral clearance. This demonstrates the interplay between the antiviral treatment-directed viral evolution and subsequent host immune response in viral clearance.</p>","PeriodicalId":36419,"journal":{"name":"Pathogens and Immunity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11378757/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142156237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison Study of the Bio-Plex and Meso Scale Multiplexed SARS-CoV-2 Serology Assays Reveals Evidence of Diminished Host Antibody Responses to SARS-CoV-2 after Monoclonal Antibody Treatment. Bio-Plex 和 Meso Scale 多路复用 SARS-CoV-2 血清学测定的比较研究显示,单克隆抗体治疗后宿主对 SARS-CoV-2 的抗体反应减弱。
Pathogens and Immunity Pub Date : 2024-08-15 eCollection Date: 2024-01-01 DOI: 10.20411/pai.v9i2.715
Urvi M Parikh, Amy L Heaps, Daniela Moisi, Kelley C Gordon, John W Mellors, Manish C Choudhary, Rinki Deo, Carlee Moser, Paul Klekotka, Alan L Landay, Judith S Currier, Joseph J Eron, Kara W Chew, Davey M Smith, Jonathan Z Li, Scott F Sieg
{"title":"Comparison Study of the Bio-Plex and Meso Scale Multiplexed SARS-CoV-2 Serology Assays Reveals Evidence of Diminished Host Antibody Responses to SARS-CoV-2 after Monoclonal Antibody Treatment.","authors":"Urvi M Parikh, Amy L Heaps, Daniela Moisi, Kelley C Gordon, John W Mellors, Manish C Choudhary, Rinki Deo, Carlee Moser, Paul Klekotka, Alan L Landay, Judith S Currier, Joseph J Eron, Kara W Chew, Davey M Smith, Jonathan Z Li, Scott F Sieg","doi":"10.20411/pai.v9i2.715","DOIUrl":"10.20411/pai.v9i2.715","url":null,"abstract":"<p><strong>Background: </strong>Assessing the breadth and duration of antigen-specific binding antibodies provides valuable information for evaluating interventions to treat or prevent SARS-CoV-2 infection. Multiplex immunoassays are a convenient method for rapid measurement of antibody responses but can sometimes provide discordant results, and antibody positive percent agreement for COVID-19 diagnosis can vary depending on assay type, disease severity, and population sampled. Therefore, we compared two assays marked for research applications, MSD and Bio-Plex Pro, to evaluate qualitative interpretation of serostatus and quantitative detection of antibodies of varying isotypes (IgG, IgM, and IgA) against receptor binding domain (RBD) and nucleocapsid (N) antigens.</p><p><strong>Methods: </strong>Specimens from ACTIV-2/A5401, a placebo-controlled clinical trial of the SARSCoV-2 monoclonal antibody (mAb) bamlanivimab to prevent COVID-19 disease progression, were used to evaluate the concordance of the Bio-Rad Bio-Plex Pro Human SARS-CoV-2 Serology Assay and the Meso Scale Discovery (MSD) V-PLEX COVID-19 Panel 1 serology assay in detecting and quantifying IgG, IgA, and IgM binding anti-SARS-CoV-2 antibody responses against the RBD and N antigens. Data were disaggregated by study arm, bamlanivimab dose, days post-enrollment, and presence of emerging resistance.</p><p><strong>Results: </strong>We observed 90.5% (412 of 455 tests) concordance for anti-RBD IgG and 87% (396 of 455) concordance for anti-N IgG in classifying samples as negative or positive based on assay-defined cutoffs. Antibody levels converted to the WHO standard BAU/mL were significantly correlated for all isotypes (IgG, IgM, and IgA) and SARS-CoV-2 antigen targets (RBD and N) tested that were common between the two assays (Spearman r 0.65 to 0.92, <i>P</i> < 0.0001). Both assays uncovered evidence of diminished host-derived IgG immune responses in participants treated with bamlanivimab compared to placebo. Assessment of immune responses in the four individuals treated with the 700 mg of bamlanivimab with emerging mAb resistance demonstrated a stronger anti-N IgG response (MSD) at day 28 (median 2.18 log BAU/mL) compared to participants treated with bamlanivimab who did not develop resistance (median 1.55 log BAU/mL).</p><p><strong>Conclusions: </strong>These data demonstrate the utility in using multiplex immunoassays for characterizing the immune responses with and without treatment in a study population and provide evidence that monoclonal antibody treatment in acute COVID-19 may have a modest negative impact on development of host IgG responses.</p>","PeriodicalId":36419,"journal":{"name":"Pathogens and Immunity","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11335343/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142009605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diagnostic Utility of Pre-Genomic Hepatitis B RNA in the Evaluation of HBV/HIV Coinfection. 基因组前乙型肝炎 RNA 在评估 HBV/HIV 合并感染中的诊断作用。
Pathogens and Immunity Pub Date : 2024-07-30 eCollection Date: 2024-01-01 DOI: 10.20411/pai.v9i2.720
Kenneth E Sherman, Susan D Rouster, Heidi Meeds, Marion G Peters, Jason T Blackard, Paul S Horn, Timothy Archampong, Awewura Kwara, Mark Anderson, Michael Stec, Gavin A Cloherty
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