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Seizer L, Löchner J. The influence of everyday emotions on mucosal immunity: An intensive longitudinal modeling approach. Psychophysiology 2024; 61:e14577. [PMID: 38549447 DOI: 10.1111/psyp.14577] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 03/14/2024] [Accepted: 03/15/2024] [Indexed: 07/07/2024]
Abstract
Mucosal immunity is a multifaceted system of immunological responses that provides a barrier against pathogenic invasion and can be regulated by psychosocial and neuroendocrine factors. The present study aims to elucidate the association between everyday emotional states, emotion regulation skills, and mucosal immunity by utilizing an ambulatory assessment approach. 30 healthy subjects (61% male; M = 30.18 years old) completed an emotion questionnaire (PANAS) and collected saliva samples via passive drool to determine salivary immunoglobulin-A (S-IgA) excretion rate three times a day over a period of 1 week. In a multi-level model, the influence of emotions on S-IgA, both on a within-subject and between-subject level, was estimated. We found that most of the variation in S-IgA (74%) was accounted for by within-subject changes rather than stable between-subject differences. On a within-subject level, negative emotions had a significant positive effect on S-IgA levels (b = 1.87, p = .015), while positive emotions had no effect. This effect of negative emotions was moderated by the individual emotion regulation skills, with higher regulation skills corresponding to smaller effects (b = -2.67, p = .046). Furthermore, S-IgA levels decreased over the course of a day, indicating circadian rhythmicity (b = -0.13, p = .034). These results highlight the possibilities of intensive longitudinal data to investigate the covariance between psychological and immunological states over time.
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Affiliation(s)
- Lennart Seizer
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Tübingen, Tübingen, Germany
- German Center for Mental Health (DZPG), Tübingen, Germany
| | - Johanna Löchner
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Tübingen, Tübingen, Germany
- German Center for Mental Health (DZPG), Tübingen, Germany
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2
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Seizer L, Stasielowicz L, Löchner J. Timing matters: A meta-analysis on the dynamic effect of stress on salivary immunoglobulin. Brain Behav Immun 2024; 119:734-740. [PMID: 38701886 DOI: 10.1016/j.bbi.2024.04.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 04/04/2024] [Accepted: 04/23/2024] [Indexed: 05/05/2024] Open
Abstract
The impact of psychological stress on physiological systems has been a focus of extensive research, particularly in understanding its diverse effects on immune system activity and disease risk. This meta-analysis explores the dynamic effect of acute stress on salivary immunoglobulin-A (S-IgA) levels, a key biomarker for secretory immunity within the oral environment. Analyzing data from 34 samples comprising 87 effect sizes and a total of 1,025 subjects, a multi-level approach is employed to account for the temporal variability in measuring the stress response. The results reveal a significant increase in S-IgA levels peaking around 10 min after stress exposure, followed by a return to baseline levels approximately 30 min later. In addition, the meta-analysis identified several research gaps of the extant literature, such as limitations in the considered time lag after stress. In conclusion, the findings emphasize the temporal nuances of the S-IgA response to stress, which can help to infer potential biological pathways and guide sampling designs in future studies. Further, we highlight the use of a multi-level meta-analysis approach to investigate the temporal dependencies of the interplay between stress and immune functioning.
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Affiliation(s)
- Lennart Seizer
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Tübingen, Germany; German Center for Mental Health (DZPG), Germany.
| | | | - Johanna Löchner
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital of Tübingen, Germany; German Center for Mental Health (DZPG), Germany
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3
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Dunbar SA. Multiplexed suspension array immunoassays for detection of antibodies to pneumococcal polysaccharide and conjugate vaccines. Front Cell Infect Microbiol 2023; 13:1296665. [PMID: 38035336 PMCID: PMC10684963 DOI: 10.3389/fcimb.2023.1296665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 10/30/2023] [Indexed: 12/02/2023] Open
Abstract
Combination and polyvalent vaccines not only provide protection against several different pathogens at the same time but can also increase vaccine protection against pathogens that have closely related pathogenic strains or serotypes. Multiplexed serological testing is a preferred method for determining the efficacy of combination and polyvalent vaccines, as it reduces the need for conducting multiple individual assays to confirm immune responses and cross-reactivity, uses less sample, and can be faster, more reliable, and more cost-effective. Bead-based suspension array technologies, such as the Luminex® xMAP® Technology, are often used for development of multiplexed serological assays for various vaccine trials and for routine testing in clinical laboratories to determine immune status of vaccinated individuals. This article reviews publications describing the development and implementation of bead-based multiplexed serological assays for detection of immune responses to polyvalent polysaccharide and conjugate vaccines against Streptococcus pneumoniae. Many of these serological assays on the bead array platform have been further optimized and expanded over time and are still widely used today.
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Affiliation(s)
- Sherry A. Dunbar
- Scientific Affairs, Luminex, A DiaSorin Company, Austin, TX, United States
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4
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Karthikeyan S, Mata-Miranda MM, Martinez-Cuazitl A, Delgado-Macuil RJ, Garibay-Gonzalez F, Sanchez-Monroy V, Lopez-Reyes A, Rojas-Lopez M, Rivera-Alatorre DE, Vazquez-Zapien GJ. Dynamic response antibodies SARS-CoV-2 human saliva studied using two-dimensional correlation (2DCOS) infrared spectral analysis coupled with receiver operation characteristics analysis. Biochim Biophys Acta Mol Basis Dis 2023:166799. [PMID: 37400001 DOI: 10.1016/j.bbadis.2023.166799] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 06/12/2023] [Accepted: 06/26/2023] [Indexed: 07/05/2023]
Abstract
COVID-19 has affected the entire world due to the rapid spread of SARS-CoV-2, mainly through airborne particles from saliva, which, being easily obtained, help monitor the progression of the disease. Fourier transform infrared (FTIR) spectra combined with chemometric analysis could increase the diagnostic efficiency of the disease. However, two-dimensional correlation spectroscopy (2DCOS) is superior to conventional spectra as it helps to resolve the minute overlapped peaks. In this work, we aimed to use 2DCOS and receiver operating characteristic (ROC) analyses to compare the immune response in saliva associated with COVID-19, which could be important in biomedical diagnosis. FTIR spectra of human saliva samples from male (575) and female (366) patients ranging from 20 to 82 ± 2 years of age were used for the study. Age groups were segregated as G1 (25-40 ± 2 years), G2 (45-60 ± 2 years), and G3 (65-80 ± 2 years). The results of the 2DCOS analysis showed biomolecular changes in response to SARS-CoV-2. 2DCOS analyses of the male G1 + (1579,1644) and -(1531,1598) crossover peaks evidenced changes such as amide I > IgG. Female G1 crossover peaks -(1504,1645), (1504,1545) and -(1391,1645) resulted in amide I > IgG > IgM. The asynchronous spectra in 1300-900 cm-1 of the G2 male group showed that IgM is more important in diagnosing infections than IgA. Female G2 asynchronous spectra -(1027,1242) and + (1068,1176) showed that IgA > IgM is produced against SARS-CoV-2. The G3 male group evidenced antibody changes in IgG > IgM. The absence of IgM in the female G3 population diagnoses a specifically targeted immunoglobulin associated with sex. Moreover, ROC analysis showed sensitivity (85-89 % men; 81-88 % women) and specificity (90-93 % men; 78-92 % women) for the samples studied. The general classification performance (F1 score) of the studied samples is high for the male (88-91 %) and female (80-90 %) populations. This high PPV (positive predictive value) and NPV (negative predictive value) verify our segregation of COVID-19 positive and negative sample groups. Therefore, 2DCOS with ROC analysis using FTIR spectra have the potential for a non-invasive approach to monitoring COVID-19.
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Affiliation(s)
- Sivakumaran Karthikeyan
- Department of Physics, Dr. Ambedkar Government Arts College, Chennai 600039, Tamil Nadu, India.
| | - Monica Maribel Mata-Miranda
- Escuela Militar de Medicina, Centro Militar de Ciencias de la Salud, Secretaría de la Defensa Nacional, Mexico City 11200, Mexico
| | - Adriana Martinez-Cuazitl
- Escuela Militar de Medicina, Centro Militar de Ciencias de la Salud, Secretaría de la Defensa Nacional, Mexico City 11200, Mexico; Escuela Nacional de Medicina y Homeopatía, Instituto Politécnico Nacional, Mexico City 07320, Mexico
| | - Raul Jacobo Delgado-Macuil
- Centro de Investigación en Biotecnología Aplicada, Instituto Politécnico Nacional, Tlaxcala, 90700, Mexico
| | - Francisco Garibay-Gonzalez
- Escuela Militar de Medicina, Centro Militar de Ciencias de la Salud, Secretaría de la Defensa Nacional, Mexico City 11200, Mexico
| | | | - Alberto Lopez-Reyes
- Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Mexico City, 14389, Mexico
| | - Marlon Rojas-Lopez
- Centro de Investigación en Biotecnología Aplicada, Instituto Politécnico Nacional, Tlaxcala, 90700, Mexico
| | - Daniel Enrique Rivera-Alatorre
- Centro de Investigación y Desarrollo del Ejército y Fuerza Aérea Mexicanos, Secretaría de la Defensa Nacional, Mexico City, 11400, Mexico
| | - Gustavo Jesus Vazquez-Zapien
- Escuela Militar de Medicina, Centro Militar de Ciencias de la Salud, Secretaría de la Defensa Nacional, Mexico City 11200, Mexico; Centro de Investigación y Desarrollo del Ejército y Fuerza Aérea Mexicanos, Secretaría de la Defensa Nacional, Mexico City, 11400, Mexico.
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Elias SC, Muthumbi E, Mwanzu A, Wanjiku P, Mutiso A, Simon R, MacLennan CA. Complementary measurement of nontyphoidal Salmonella-specific IgG and IgA antibodies in oral fluid and serum. Heliyon 2023; 9:e12071. [PMID: 36704288 PMCID: PMC9871079 DOI: 10.1016/j.heliyon.2022.e12071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 10/07/2022] [Accepted: 11/25/2022] [Indexed: 12/23/2022] Open
Abstract
Objectives Immuno-epidemiological studies of orally acquired, enteric pathogens such as nontyphoidal Salmonella (NTS) often focus on serological measures of immunity, ignoring potentially relevant oral mucosal responses. In this study we sought to assess the levels and detectability of both oral fluid and serum IgG and IgA to NTS antigens, in endemic and non-endemic populations. Methods IgG and IgA antibodies specific for Salmonella Typhimurium and Salmonella Enteritidis O antigen and phase 1 flagellin were assessed using Enzyme Linked Immunosorbent Assay (ELISA). Paired oral fluid and serum samples were collected from groups of 50 UK adults, Kenyan adults and Kenyan infants. Additionally, oral fluid alone was collected from 304 Kenyan individuals across a range of ages. Results Antigen-specific IgG and IgA was detectable in the oral fluid of both adults and infants. Oral fluid antibody increased with age, peaking in adulthood for both IgG and IgA but a separate peak was also observed for IgA in infants. Oral fluid and serum responses correlated for IgG but not IgA. Despite standardised collection the relationship between oral fluid volume and antibody levels varied with age and country of origin. Conclusions Measurement of NTS-specific oral fluid antibody can be used to complement measurement of serum antibody. For IgA in particular, oral fluid may offer insights into how protective immunity to NTS changes as individuals transition with age, from maternal to acquired systemic and mucosal immunity. This may prove useful in helping to guide future vaccine design.
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Affiliation(s)
- Sean C. Elias
- Jenner Institute, Nuffield Department of Medicine, University of Oxford, UK
- Corresponding author.
| | - Esther Muthumbi
- KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
- London School of Hygiene & Tropical Medicine, UK
| | - Alfred Mwanzu
- KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | | | - Agnes Mutiso
- KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
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6
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Thomas SN, Karger AB, Altawallbeh G, Nelson KM, Jacobs DR, Gorlin J, Barcelo H, Thyagarajan B. Ultrasensitive detection of salivary SARS-CoV-2 IgG antibodies in individuals with natural and COVID-19 vaccine-induced immunity. Sci Rep 2022; 12:8890. [PMID: 35614113 PMCID: PMC9132168 DOI: 10.1038/s41598-022-12869-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 05/06/2022] [Indexed: 11/23/2022] Open
Abstract
We assessed the feasibility of a highly sensitive immunoassay method based on single molecule array (Simoa) technology to detect IgG and IgA antibodies against SARS-CoV-2 spike protein receptor binding domain (RBD) in saliva from individuals with natural or vaccine-induced COVID-19 immunity. The performance of the method was compared to a laboratory-developed SARS-CoV-2 RBD total antibody enzyme-linked immunosorbent assay (ELISA). Paired serum and saliva specimens were collected from individuals (n = 40) prior to and 2 weeks after receiving an initial prime COVID-19 vaccine dose (Pfizer/BioNTech BNT162b2 or Moderna mRNA-1273). Saliva was collected using a commercially available collection device (OraSure Inc.) and SARS-CoV-2 RBD IgG antibodies were measured by an indirect ELISA using concentrated saliva samples and a Simoa immunoassay using unconcentrated saliva samples. The IgG results were compared with paired serum specimens that were analyzed for total RBD antibodies using the ELISA method. The analytical sensitivity of the saliva-based Simoa immunoassay was five orders of magnitude higher than the ELISA assay: 0.24 pg/mL compared to 15 ng/mL. The diagnostic sensitivity of the saliva ELISA method was 90% (95% CI 76.3-97.2%) compared to 91.7% (95% CI 77.5-98.2%) for the Simoa immunoassay without total IgG-normalization and 100% (95% CI 90.3-100%) for the Simoa immunoassay after total IgG-normalization when compared to the serum ELISA assay. When analyzed using the SARS-CoV-2 RBD IgG antibody ELISA, the average relative increase in antibody index (AI) between the saliva of the post- and pre-vaccinated individuals was 8.7 (AIpost/pre). An average relative increase of 431 pg/mL was observed when the unconcentrated saliva specimens were analyzed using the Simoa immunoassay (SARS-CoV-2 RBD IgGpost/pre). These findings support the suitability of concentrated saliva specimens for the measurement of SARS-CoV-2 RBD IgG antibodies via ELISA, and unconcentrated saliva specimens for the measurement of SARS-CoV-2 RBD IgG and IgA using an ultrasensitive Simoa immunoassay.
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Affiliation(s)
- Stefani N Thomas
- Department of Laboratory Medicine and Pathology, School of Medicine, University of Minnesota, 420 Delaware St. SE MMC 609, Minneapolis, MN, 55455, USA
| | - Amy B Karger
- Department of Laboratory Medicine and Pathology, School of Medicine, University of Minnesota, 420 Delaware St. SE MMC 609, Minneapolis, MN, 55455, USA
| | - Ghaith Altawallbeh
- Department of Laboratory Medicine and Pathology, School of Medicine, University of Minnesota, 420 Delaware St. SE MMC 609, Minneapolis, MN, 55455, USA
- Intermountain Central Laboratory, Murray, UT, USA
| | - Kathryn M Nelson
- Institute for Therapeutics Discovery and Development, College of Pharmacy, University of Minnesota, Minneapolis, MN, USA
| | - David R Jacobs
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Jed Gorlin
- Memorial Blood Centers-A Division of New York Blood Center Enterprises, St. Paul, MN, USA
| | - Helene Barcelo
- Department of Laboratory Medicine and Pathology, School of Medicine, University of Minnesota, 420 Delaware St. SE MMC 609, Minneapolis, MN, 55455, USA
| | - Bharat Thyagarajan
- Department of Laboratory Medicine and Pathology, School of Medicine, University of Minnesota, 420 Delaware St. SE MMC 609, Minneapolis, MN, 55455, USA.
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Costantini VP, Nguyen K, Lyski Z, Novosad S, Bardossy AC, Lyons AK, Gable P, Kutty PK, Lutgring JD, Brunton A, Thornburg NJ, Brown AC, McDonald LC, Messer W, Vinjé J. Development and Validation of an Enzyme Immunoassay for Detection and Quantification of SARS-CoV-2 Salivary IgA and IgG. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 208:1500-1508. [PMID: 35228262 PMCID: PMC8916996 DOI: 10.4049/jimmunol.2100934] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 01/04/2022] [Indexed: 12/14/2022]
Abstract
Oral fluids offer a noninvasive sampling method for the detection of Abs. Quantification of IgA and IgG Abs in saliva allows studies of the mucosal and systemic immune response after natural infection or vaccination. We developed and validated an enzyme immunoassay (EIA) to detect and quantify salivary IgA and IgG Abs against the prefusion-stabilized form of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike protein expressed in suspension-adapted HEK-293 cells. Normalization against total Ab isotype was performed to account for specimen differences, such as collection time and sample volume. Saliva samples collected from 187 SARS-CoV-2 confirmed cases enrolled in 2 cohorts and 373 prepandemic saliva samples were tested. The sensitivity of both EIAs was high (IgA, 95.5%; IgG, 89.7%) without compromising specificity (IgA, 99%; IgG, 97%). No cross-reactivity with endemic coronaviruses was observed. The limit of detection for SARS-CoV-2 salivary IgA and IgG assays were 1.98 ng/ml and 0.30 ng/ml, respectively. Salivary IgA and IgG Abs were detected earlier in patients with mild COVID-19 symptoms than in severe cases. However, severe cases showed higher salivary Ab titers than those with a mild infection. Salivary IgA titers quickly decreased after 6 wk in mild cases but remained detectable until at least week 10 in severe cases. Salivary IgG titers remained high for all patients, regardless of disease severity. In conclusion, EIAs for both IgA and IgG had high specificity and sensitivity for the confirmation of current or recent SARS-CoV-2 infections and evaluation of the IgA and IgG immune response.
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Affiliation(s)
- Veronica P Costantini
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA;
| | - Kenny Nguyen
- Oak Ridge Institute for Science and Education, Oak Ridge, TN
| | - Zoe Lyski
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR
| | - Shannon Novosad
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA
| | - Ana C Bardossy
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA
| | - Amanda K Lyons
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA
| | - Paige Gable
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA
| | - Preeta K Kutty
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA
| | - Joseph D Lutgring
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA
| | - Amanda Brunton
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR
| | - Natalie J Thornburg
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA
| | - Allison C Brown
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA
| | - L Clifford McDonald
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA
| | - William Messer
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR.,School of Public Health, Oregon Health & Science University, Portland, OR; and.,Division of Infectious Diseases, Department of Medicine, Oregon Health & Science University, Portland, OR
| | - Jan Vinjé
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA
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de Koff EM, van Houten MA, de Heij F, Berbers GAM, Bogaert D, Sanders EAM. Salivary antibody responses to ten-valent pneumococcal conjugate vaccination following two different immunization schedules in a healthy birth cohort. Vaccine 2021; 40:408-413. [PMID: 34961634 DOI: 10.1016/j.vaccine.2021.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 12/01/2021] [Accepted: 12/06/2021] [Indexed: 11/18/2022]
Abstract
Pneumococcal conjugate vaccines reduce pneumococcal colonization via serotype-specific immunoglobulin G (IgG) at mucosal surfaces. The infant immunization schedule with the ten-valent pneumococcal conjugate vaccine (PCV10) changed from a 3 + 1 schedule (2-3-4-11 months) to a 2 + 1 schedule (2-4-11 months) in The Netherlands in 2013. We compared anti-pneumococcal IgG concentrations in saliva between the schedules. IgG was measured using a fluorescent bead-based multiplex immunoassay at the ages of 6 (post-primary) and 12 (post-booster) months in 51 infants receiving the 3 + 1 schedule and 68 infants receiving the 2 + 1 schedule. Post-primary IgG geometric mean concentrations (GMCs) were comparable between schedules for all vaccine serotypes. Post-booster IgG GMCs were significantly lower after the 2 + 1 schedule for serotypes 4 (p = 0.035), 7F (p = 0.048) and 23F (p = 0.0056). This study shows small differences in mucosal IgG responses between a 3 + 1 and a 2 + 1 PCV10 schedule. Future studies should establish correlates of protection against pneumococcal colonization for mucosal antibodies.
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Affiliation(s)
- Emma M de Koff
- Spaarne Academy, Spaarne Gasthuis, Hoofddorp and Haarlem, Netherlands; Department of Paediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital and University Medical Centre Utrecht, Utrecht, Netherlands
| | - Marlies A van Houten
- Spaarne Academy, Spaarne Gasthuis, Hoofddorp and Haarlem, Netherlands; Department of Paediatrics, Spaarne Gasthuis, Hoofddorp and Haarlem, Netherlands
| | - Femke de Heij
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, Netherlands
| | - Guy A M Berbers
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, Netherlands
| | - Debby Bogaert
- Department of Paediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital and University Medical Centre Utrecht, Utrecht, Netherlands; Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, Netherlands; Medical Research Council and University of Edinburgh Centre for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK.
| | - Elisabeth A M Sanders
- Department of Paediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital and University Medical Centre Utrecht, Utrecht, Netherlands; Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, Netherlands
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9
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Costantini VP, Nguyen K, Lyski Z, Novosad S, Bardossy AC, Lyons AK, Gable P, Kutty PK, Lutgring JD, Brunton A, Thornburg N, Brown AC, McDonald LC, Messer W, Vinjé J. Development and validation of an enzyme immunoassay for detection and quantification of SARS-CoV-2 salivary IgA and IgG. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2021:2021.09.03.21263078. [PMID: 34518840 PMCID: PMC8437314 DOI: 10.1101/2021.09.03.21263078] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Oral fluids offer a non-invasive sampling method for the detection of antibodies. Quantification of IgA and IgG antibodies in saliva allows studies of the mucosal and systemic immune response after natural infection or vaccination. We developed and validated an enzyme immunoassay (EIA) to detect and quantify salivary IgA and IgG antibodies against the prefusion-stabilized form of the SARS-CoV-2 spike protein. Normalization against total antibody isotype was performed to account for specimen differences, such as collection time and sample volume. Saliva samples collected from 187 SARS-CoV-2 confirmed cases enrolled in 2 cohorts and 373 pre-pandemic saliva samples were tested. The sensitivity of both EIAs was high (IgA: 95.5%; IgG: 89.7%) without compromising specificity (IgA: 99%; IgG: 97%). No cross reactivity with seasonal coronaviruses was observed. The limit of detection for SARS-CoV-2 salivary IgA and IgG assays were 1.98 ng/mL and 0.30 ng/mL, respectively. Salivary IgA and IgG antibodies were detected earlier in patients with mild COVID-19 symptoms than in severe cases. However, severe cases showed higher salivary antibody titers than those with a mild infection. Salivary IgA titers quickly decreased after 6 weeks in mild cases but remained detectable until at least week 10 in severe cases. Salivary IgG titers remained high for all patients, regardless of disease severity. In conclusion, EIAs for both IgA and IgG had high specificity and sensitivity for the confirmation of current or recent SARS-CoV-2 infections and evaluation of the IgA and IgG immune response.
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Affiliation(s)
- Veronica P Costantini
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, 30329, USA
| | - Kenny Nguyen
- Oak Ridge Institute for Science and Education, Oak Ridge, TN, 37830
| | - Zoe Lyski
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR, 97239, USA
| | - Shannon Novosad
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, 30329, USA
| | - Ana C Bardossy
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, 30329, USA
| | - Amanda K Lyons
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, 30329, USA
| | - Paige Gable
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, 30329, USA
| | - Preeta K Kutty
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, 30329, USA
| | - Joseph D Lutgring
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, 30329, USA
| | - Amanda Brunton
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR, 97239, USA
| | - Natalie Thornburg
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, 30329, USA
| | - Allison C Brown
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, 30329, USA
| | - L Clifford McDonald
- Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, 30329, USA
| | - William Messer
- Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR, 97239, USA
- School of Public Health, Oregon Health & Science University, Portland, OR 97239, USA
- Department of Medicine, Division of Infectious Diseases, Oregon Health & Science University, Portland, OR 97239, USA
| | - Jan Vinjé
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA, 30329, USA
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10
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Faustini SE, Jossi SE, Perez‐Toledo M, Shields AM, Allen JD, Watanabe Y, Newby ML, Cook A, Willcox CR, Salim M, Goodall M, Heaney JL, Marcial‐Juarez E, Morley GL, Torlinska B, Wraith DC, Veenith TV, Harding S, Jolles S, Ponsford MJ, Plant T, Huissoon A, O'Shea MK, Willcox BE, Drayson MT, Crispin M, Cunningham AF, Richter AG. Development of a high-sensitivity ELISA detecting IgG, IgA and IgM antibodies to the SARS-CoV-2 spike glycoprotein in serum and saliva. Immunology 2021; 164:135-147. [PMID: 33932228 PMCID: PMC8242512 DOI: 10.1111/imm.13349] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 04/13/2021] [Accepted: 04/14/2021] [Indexed: 12/12/2022] Open
Abstract
Detecting antibody responses during and after SARS-CoV-2 infection is essential in determining the seroepidemiology of the virus and the potential role of antibody in disease. Scalable, sensitive and specific serological assays are essential to this process. The detection of antibody in hospitalized patients with severe disease has proven relatively straightforward; detecting responses in subjects with mild disease and asymptomatic infections has proven less reliable. We hypothesized that the suboptimal sensitivity of antibody assays and the compartmentalization of the antibody response may contribute to this effect. We systematically developed an ELISA, optimizing different antigens and amplification steps, in serum and saliva from non-hospitalized SARS-CoV-2-infected subjects. Using trimeric spike glycoprotein, rather than nucleocapsid, enabled detection of responses in individuals with low antibody responses. IgG1 and IgG3 predominate to both antigens, but more anti-spike IgG1 than IgG3 was detectable. All antigens were effective for detecting responses in hospitalized patients. Anti-spike IgG, IgA and IgM antibody responses were readily detectable in saliva from a minority of RT-PCR confirmed, non-hospitalized symptomatic individuals, and these were mostly subjects who had the highest levels of anti-spike serum antibodies. Therefore, detecting antibody responses in both saliva and serum can contribute to determining virus exposure and understanding immune responses after SARS-CoV-2 infection.
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Affiliation(s)
- Sian E. Faustini
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
| | - Sian E. Jossi
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
| | | | - Adrian M. Shields
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
| | - Joel D. Allen
- School of Biological SciencesUniversity of SouthamptonSouthamptonUK
| | - Yasunori Watanabe
- School of Biological SciencesUniversity of SouthamptonSouthamptonUK
- Department of BiochemistryOxford Glycobiology InstituteUniversity of OxfordOxfordUK
| | - Maddy L. Newby
- School of Biological SciencesUniversity of SouthamptonSouthamptonUK
| | | | - Carrie R. Willcox
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
| | - Mahboob Salim
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
| | - Margaret Goodall
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
| | - Jennifer L. Heaney
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
| | | | | | - Barbara Torlinska
- Institute of Applied Health ResearchUniversity of BirminghamBirminghamUK
| | - David C. Wraith
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
| | - Tonny V. Veenith
- Department of Critical Care MedicineUniversity Hospitals Birmingham NHS TrustBirminghamUK
| | | | | | | | - Tim Plant
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
| | - Aarnoud Huissoon
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
- Department of ImmunologyUniversity Hospitals Birmingham NHS Foundation TrustBirminghamUK
| | - Matthew K. O'Shea
- Institute of Microbiology and InfectionUniversity of BirminghamBirminghamUK
| | - Benjamin E. Willcox
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
| | - Mark T. Drayson
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
| | - Max Crispin
- School of Biological SciencesUniversity of SouthamptonSouthamptonUK
| | - Adam F. Cunningham
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
| | - Alex G. Richter
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
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11
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Sagredo-Olivares K, Morales-Gómez C, Aitken-Saavedra J. Evaluation of saliva as a complementary technique to the diagnosis of COVID-19: a systematic review. Med Oral Patol Oral Cir Bucal 2021; 26:e526-e532. [PMID: 33609022 PMCID: PMC8254882 DOI: 10.4317/medoral.24424] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 02/01/2021] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Infectious disease coronavirus 2019 (COVID-19) is caused by the SARS-CoV-2 virus, and it mainly affects the upper respiratory tract. The gold standard for its diagnosis is real-time reverse transcription polymerase chain reaction (RT-qPCR) performed on a nasopharyngeal swab. In contrast, testing saliva has significant advantages as a diagnostic method. MATERIAL AND METHODS We searched for articles evaluating saliva as a diagnostic method for COVID-19 on the PUBMED/MEDLINE, WEB OF SCIENCE, COCHRANE, and SCIELO platforms. We initially found 233 articles and 20 were selected for inclusion following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses protocol: 18 cross-sectional studies and 2 case reports, including 8 from America, 8 from Asia, and 4 from Europe. The studies evaluated the presence of viral RNA, IgG, IgM, and IgA in samples of unstimulated saliva from adults with confirmed or suspected COVID-19. The vast majority of the studies performed RT-qPCR on the saliva samples and compared the results with the gold standard (a nasopharyngeal swab of the same patient). RESULTS Saliva samples analyzed by RT-qPCR, reverse transcription isothermal amplification (RT-LAMP), spectroscopy, and enzyme-linked immunosorbent assay (ELISA) offer high sensitivity to detect SARS-CoV-2 in the early stages of the disease and among asymptomatic patients as compared to nasopharyngeal swab RT-qPCR. In addition, the self-collection of saliva offers the possibility of receiving telemedicine instructions to carry out the test, reducing the risk of contagion. CONCLUSIONS The diagnosis of COVID-19 through saliva is sensitive, non-invasive, and is of low risk for the healthcare professionals. However, further studies are recommended to validate its clinical use.
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12
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Augustine SAJ, Eason TN, Wade T, Griffin SM, Sams E, Simmons K, Ramudit M, Oshima K, Dufour A. Salivary Antibodies against Multiple Environmental Pathogens Found in Individuals Recreating at an Iowa Beach. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18115797. [PMID: 34071402 PMCID: PMC8199218 DOI: 10.3390/ijerph18115797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 05/20/2021] [Accepted: 05/24/2021] [Indexed: 11/26/2022]
Abstract
Detecting environmental exposures and mitigating their impacts are growing global public health challenges. Antibody tests show great promise and have emerged as fundamental tools for large-scale exposure studies. Here, we apply, demonstrate and validate the utility of a salivary antibody multiplex immunoassay in measuring antibody prevalence and immunoconversions to six pathogens commonly found in the environment. The study aimed to assess waterborne infections in consenting beachgoers recreating at an Iowa riverine beach by measuring immunoglobulin G (IgG) antibodies against select pathogens in serially collected saliva samples. Results showed that nearly 80% of beachgoers had prior exposures to at least one of the targeted pathogens at the beginning of the study. Most of these exposures were to norovirus GI.1 (59.41%), norovirus GII.4 (58.79%) and Toxoplasma gondii (22.80%) and over half (56.28%) of beachgoers had evidence of previous exposure to multiple pathogens. Of individuals who returned samples for each collection period, 6.11% immunoconverted to one or more pathogens, largely to noroviruses (GI.1: 3.82% and GII.4: 2.29%) and T. gondii (1.53%). Outcomes of this effort illustrate that the multiplex immunoassay presented here serves as an effective tool for evaluating health risks by providing valuable information on the occurrence of known and emerging pathogens in population surveillance studies.
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Affiliation(s)
- Swinburne A. J. Augustine
- Center for Public Health and Environmental Assessment, United States Environmental Protection Agency, Cincinnati, OH 45268, USA;
- Correspondence: ; Tel.: +1-513-569-7132
| | - Tarsha N. Eason
- Center for Environmental Methods and Measurement, United States Environmental Protection Agency, Athens, GA 30605, USA;
| | - Tim Wade
- Center for Public Health and Environmental Assessment, United States Environmental Protection Agency, Research Triangle Park, NC 27709, USA; (T.W.); (E.S.)
| | - Shannon M. Griffin
- Center for Public Health and Environmental Assessment, United States Environmental Protection Agency, Cincinnati, OH 45268, USA;
| | - Elizabeth Sams
- Center for Public Health and Environmental Assessment, United States Environmental Protection Agency, Research Triangle Park, NC 27709, USA; (T.W.); (E.S.)
| | - Kaneatra Simmons
- Department of Arts and Sciences/Learning Support, Fort Valley State University, Fort Valley, GA 31030, USA;
| | - Malini Ramudit
- Oak Ridge Institute for Science Education, Oak Ridge, TN 37831, USA;
| | - Kevin Oshima
- Center for Environmental Methods and Measurement, United States Environmental Protection Agency, Cincinnati, OH 45268, USA; (K.O.); (A.D.)
| | - Alfred Dufour
- Center for Environmental Methods and Measurement, United States Environmental Protection Agency, Cincinnati, OH 45268, USA; (K.O.); (A.D.)
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13
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MacMullan MA, Ibrayeva A, Trettner K, Deming L, Das S, Tran F, Moreno JR, Casian JG, Chellamuthu P, Kraft J, Kozak K, Turner FE, Slepnev VI, Le Page LM. ELISA detection of SARS-CoV-2 antibodies in saliva. Sci Rep 2020; 10:20818. [PMID: 33257702 PMCID: PMC7705674 DOI: 10.1038/s41598-020-77555-4] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 11/10/2020] [Indexed: 12/21/2022] Open
Abstract
To facilitate containment of the COVID-19 pandemic currently active in the United States and across the world, options for easy, non-invasive antibody testing are required. Here we have adapted a commercially available, serum-based enzyme-linked immunosorbent assay (ELISA) for use with saliva samples, achieving 84.2% sensitivity and 100% specificity in a set of 149 clinical samples. This strategy will enable widespread, affordable testing for patients who experienced this disease, whilst minimizing exposure risk for healthcare workers.
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Affiliation(s)
- Melanie A MacMullan
- Curative Inc, 430 S Cataract Ave, San Dimas, CA, 91773, USA
- Mork Family Department of Chemical Engineering and Materials Science, Viterbi School of Engineering, University of Southern California, Los Angeles, USA
| | - Albina Ibrayeva
- Curative Inc, 430 S Cataract Ave, San Dimas, CA, 91773, USA
- Eli and Edythe Broad Center for Regenerative Medicine & Stem Cell Research at USC, Department of Stem Cell Biology and Regenerative Medicine, W.M. Keck School of Medicine, Los Angeles, USA
- Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Kylie Trettner
- Curative Inc, 430 S Cataract Ave, San Dimas, CA, 91773, USA
- Mork Family Department of Chemical Engineering and Materials Science, Viterbi School of Engineering, University of Southern California, Los Angeles, USA
- Bridge Institute, Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, USA
| | - Laura Deming
- Curative Inc, 430 S Cataract Ave, San Dimas, CA, 91773, USA
| | - Sudipta Das
- Curative Inc, 430 S Cataract Ave, San Dimas, CA, 91773, USA
| | - Frances Tran
- Curative Inc, 430 S Cataract Ave, San Dimas, CA, 91773, USA
| | - Jose Ricardo Moreno
- Curative Inc, 430 S Cataract Ave, San Dimas, CA, 91773, USA
- Bridge Institute, Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, USA
| | | | | | - Jeffrey Kraft
- Curative Inc, 430 S Cataract Ave, San Dimas, CA, 91773, USA
| | - Kenneth Kozak
- Curative Inc, 430 S Cataract Ave, San Dimas, CA, 91773, USA
| | - Fred E Turner
- Curative Inc, 430 S Cataract Ave, San Dimas, CA, 91773, USA
| | | | - Lydia M Le Page
- Curative Inc, 430 S Cataract Ave, San Dimas, CA, 91773, USA.
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14
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Riis JL, Ahmadi H, Silke O, Granger SW, Bryce CI, Granger DA. Correspondence Between Cytomegalovirus Immunoglobulin-G Levels Measured in Saliva and Serum. Front Immunol 2020; 11:2095. [PMID: 32983163 PMCID: PMC7484902 DOI: 10.3389/fimmu.2020.02095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 08/03/2020] [Indexed: 12/05/2022] Open
Abstract
Human cytomegalovirus (HCMV) infects more than 80% of the global population. While mostly asymptomatic, HCMV infection can be serious among the immunocompromised, and it is implicated in chronic disease pathophysiology in adulthood. Large-scale minimally invasive HCMV screening could advance research and public health efforts to monitor infection prevalence and prevent or mitigate downstream risks associated with infection. We examine the utility of measuring HCMV immunoglobulin-G (IgG) levels in saliva as an index of serum levels. Matched serum and saliva samples from healthy adults (N = 98; 44% female; 51% white) were assayed for HCMV IgG, total salivary protein, and salivary markers related to oral inflammation, blood, and tissue integrity. We examine the serum-saliva association for HCMV IgG and assess the influence of participant characteristics and factors specific to the oral compartment (e.g., oral inflammation) on HCMV IgG levels and cross-specimen relations. We found a robust serum-saliva association for HCMV IgG with serum antibody levels accounting for >60% of the variance in salivary levels. This relation remained after adjusting for key demographic and oral immune-related variables. Compared to the serum test, the salivary HCMV IgG test had 51% sensitivity and 97% specificity. With improvements in assay performance and sample optimization, HCMV antibody levels in oral fluids may be a useful proxy for serum levels.
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Affiliation(s)
- Jenna L. Riis
- Institute for Interdisciplinary Salivary Bioscience Research, University of California, Irvine, Irvine, CA, United States
- Department of Psychological Science, University of California, Irvine, Irvine, CA, United States
| | - Hedyeh Ahmadi
- Institute for Interdisciplinary Salivary Bioscience Research, University of California, Irvine, Irvine, CA, United States
| | - Olivia Silke
- Department of Psychological Science, University of California, Irvine, Irvine, CA, United States
| | - Steve W. Granger
- Salimetrics Research and Technology Center, Carlsbad, CA, United States
| | - Crystal I. Bryce
- Institute for Interdisciplinary Salivary Bioscience Research, University of California, Irvine, Irvine, CA, United States
- T. Denny Sanford School of Social and Family Dynamics, Arizona State University, Tempe, AZ, United States
| | - Douglas A. Granger
- Institute for Interdisciplinary Salivary Bioscience Research, University of California, Irvine, Irvine, CA, United States
- Department of Psychological Science, University of California, Irvine, Irvine, CA, United States
- Salimetrics Research and Technology Center, Carlsbad, CA, United States
- Department of Acute and Chronic Care, Johns Hopkins University School of Nursing, Baltimore, MD, United States
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Salivary Bioscience Laboratory, Department of Psychology, University of Nebraska–Lincoln, Lincoln, NE, United States
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15
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Faustini SE, Jossi SE, Perez-Toledo M, Shields AM, Allen JD, Watanabe Y, Newby ML, Cook A, Willcox CR, Salim M, Goodall M, Heaney JL, Marcial-Juarez E, Morley GL, Torlinska B, Wraith DC, Veenith TV, Harding S, Jolles S, Ponsford MJ, Plant T, Huissoon A, O'Shea MK, Willcox BE, Drayson MT, Crispin M, Cunningham AF, Richter AG. Detection of antibodies to the SARS-CoV-2 spike glycoprotein in both serum and saliva enhances detection of infection. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2020:2020.06.16.20133025. [PMID: 32588002 PMCID: PMC7310662 DOI: 10.1101/2020.06.16.20133025] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Detecting antibody responses during and after SARS-CoV-2 infection is essential in determining the seroepidemiology of the virus and the potential role of antibody in disease. Scalable, sensitive and specific serological assays are essential to this process. The detection of antibody in hospitalized patients with severe disease has proven straightforward; detecting responses in subjects with mild disease and asymptomatic infections has proven less reliable. We hypothesized that the suboptimal sensitivity of antibody assays and the compartmentalization of the antibody response may contribute to this effect. METHODS We systemically developed an ELISA assay, optimising different antigens and amplification steps, in serum and saliva from symptomatic and asymptomatic SARS-CoV-2-infected subjects. RESULTS Using trimeric spike glycoprotein, rather than nucleocapsid enabled detection of responses in individuals with low antibody responses. IgG1 and IgG3 predominate to both antigens, but more anti-spike IgG1 than IgG3 was detectable. All antigens were effective for detecting responses in hospitalized patients. Anti-spike, but not nucleocapsid, IgG, IgA and IgM antibody responses were readily detectable in saliva from non-hospitalized symptomatic and asymptomatic individuals. Antibody responses in saliva and serum were largely independent of each other and symptom reporting. CONCLUSIONS Detecting antibody responses in both saliva and serum is optimal for determining virus exposure and understanding immune responses after SARS-CoV-2 infection. FUNDING This work was funded by the University of Birmingham, the National Institute for Health Research (UK), the NIH National Institute for Allergy and Infectious Diseases, the Bill and Melinda Gates Foundation and the University of Southampton.
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Affiliation(s)
- Sian E Faustini
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Sian E Jossi
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Marisol Perez-Toledo
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Adrian M Shields
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Joel D Allen
- School of Biological Sciences, University of Southampton, Southampton SO17 1BJ, U.K
| | - Yasunori Watanabe
- School of Biological Sciences, University of Southampton, Southampton SO17 1BJ, U.K
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, Oxford OX1 3QU, U.K
| | - Maddy L Newby
- School of Biological Sciences, University of Southampton, Southampton SO17 1BJ, U.K
| | - Alex Cook
- Binding Site Group Ltd, Birmingham, U.K
| | - Carrie R Willcox
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Mahboob Salim
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Margaret Goodall
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Jennifer L Heaney
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Edith Marcial-Juarez
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Gabriella L Morley
- Institute of Microbiology and Infection, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Barbara Torlinska
- Institute of Applied Health Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
| | - David C Wraith
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Tonny V Veenith
- Department of Critical Care Medicine, University Hospitals Birmingham NHS Trust, Birmingham, B15 2TH, U.K
| | | | | | | | - Tim Plant
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Aarnoud Huissoon
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
- Department of Immunology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, U.K
| | - Matthew K O'Shea
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Benjamin E Willcox
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Mark T Drayson
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Max Crispin
- School of Biological Sciences, University of Southampton, Southampton SO17 1BJ, U.K
| | - Adam F Cunningham
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
| | - Alex G Richter
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, U.K
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16
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Lee E, Lim ST, Kim WN. Aquatic exercise for improving immune function and mental stress in pre-frailty elderly women. J Women Aging 2020; 33:611-619. [DOI: 10.1080/08952841.2020.1735287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Eunjae Lee
- Center for Sport Science in Incheon, Incheon sports council, Incheon, Republic of Korea
- Waseda Institute for Sport Sciences, Waseda University, Saitama, Japan
- Institute for bio-health integration of medicine and Korean medicine, Nasaret International Hospital, Incheon, Republic of Korea
| | - Seung-Taek Lim
- Waseda Institute for Sport Sciences, Waseda University, Saitama, Japan
- Institute for bio-health integration of medicine and Korean medicine, Nasaret International Hospital, Incheon, Republic of Korea
- Institute of Sport Science, Kangwon National University, Gangwon-do, Republic of Korea
| | - Woo-Nam Kim
- College of Sport Science, Dong-A University, Busan, Republic of Korea
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17
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Abstract
As molecular biology advances, an increasing number of proteins are becoming detectable at very low levels in different biological tissues. In this regard, saliva holds vast promise. Unlike blood, saliva can be sampled 1) non-invasively; 2) across all ages (newborn to elderly); 3) in the field; 4) by study participants; and 5) many times per day. With respect to psychoneuroimmunology (PNI), physiological measures of stress such as cortisol have been well characterized. Alpha amylase provides another physiological index of stress; it is a measure of autonomic nervous system activation and is quantifiable in saliva. Other salivary measures, such as inflammatory biomarkers and immunoglobulin A (IgA), provide valuable information pertaining to the effects of stress on inflammation, mucosal immunity, and oral health. Importantly, due to various methodological issues and a lack of strong correlation between saliva and blood measures, investigators should proceed with caution in drawing conclusions from measures of salivary inflammation that pertain to systemic immunity or generalized health.
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