scholarly journals Mini-Review Article – Current Opinion on Salivary Biomarkers as a Measurement for Stress and Fatigue

2013 ◽  
Vol 6 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Ting Chun Yi ◽  
Shabbir Moochhala
Keyword(s):  
Salivary Cortisol ◽  
Immunoglobulin A ◽  
Individual Variability ◽  
Review Article ◽  
Salivary Amylase ◽  
Non Invasive ◽  
Salivary Peptide ◽  
Stress Research ◽  
Salivary Biomarkers ◽  
Salivary Immunoglobulin A

Salivary biomarkers have been increasingly popular in stress research as saliva is easily produced and collection is non-invasive and not limited by geographical distance or lack of infrastructure. Several salivary biomarkers have been utilized in stress research, for instance, salivary cortisol, salivary amylase and salivary immunoglobulin A. Despite being sensitive to changes in fatigue, they have limitations such as inter-individual variability, and interactions with other constituents that may confound the results. Recently, Hyperion Biotechnology has developed the Fatigue Biomarker Index (FBI), which is a measurement of the changes in concentration of salivary peptides with fatigue. The FBI has been shown to be an accurate and objective biomarker of fatigue, and has huge potential for use in various fields and industries. This article will review some of the previous and current salivary biomarkers of stress, as well as critically appraise the new salivary peptide test in terms of its accuracy, application and access.

scholarly journals Salivary Biomarkers of Stress, Anxiety and Depression

2021 ◽  
Vol 10 (3) ◽  
pp. 517
Author(s):  
Sylwia Chojnowska ◽  
Iwona Ptaszyńska-Sarosiek ◽  
Alina Kępka ◽  
Małgorzata Knaś ◽  
Napoleon Waszkiewicz
Keyword(s):  
Salivary Cortisol ◽  
Depressive Disorders ◽  
Immunoglobulin A ◽  
Strong Relationship ◽  
Fibroblast Growth Factor 2 ◽  
Stress Axis ◽  
Anxiety And Depression ◽  
Salivary Biomarkers ◽  
Appropriate Treatment ◽  
As Stress

Stress, anxiety and depressive disorders are often characterized by the activation of the stress axis, which results in similar symptoms at some point in these disorders. These disorders are closely related to each other—they occur simultaneously or follow one another. The diagnosis of stress, anxiety and depression is not a perfect procedure currently—it is based on patient observation and an interview with the patient and their family. There are no laboratory tests that would dispel the doubts of the doctor making the diagnosis and allow the appropriate treatment to be implemented as soon as possible. Therefore, this study will review the components of saliva that could be helpful in the quick diagnosis of stress, anxiety and/or depression. Such potential salivary biomarkers could also be useful in monitoring the effectiveness of pharmacological treatment prescribed by a psychiatrist. The following are promising salivary biomarkers of stress, anxiety or depression: cortisol, immunoglobulin A (sIgA), lysozyme, melatonin, α-amylase (sAA), chromogranin A (CgA) and fibroblast growth factor 2 (FGF-2). To the best valuable potential salivary markers of stress, we can include cortisol, lysozyme, sAA and CgA. To differentiate depression from stress, salivary cortisol and melatonin can be helpful. Fluctuations in the concentrations of the above-mentioned substances in saliva indicate a particularly strong relationship with typical human psychological problems, such as stress, depression or anxiety.

scholarly journals Salivary Biomarkers in COVID-19 Patients: Towards a Wide-Scale Test for Monitoring Disease Activity

2021 ◽  
Vol 11 (5) ◽  
pp. 385
Author(s):  
Cecilia Napodano ◽  
Cinzia Callà ◽  
Antonella Fiorita ◽  
Mariapaola Marino ◽  
Eleonora Taddei ◽  
...  
Keyword(s):  
Real Time ◽  
Immunoglobulin A ◽  
Free Light Chains ◽  
Non Invasive ◽  
Salivary Biomarkers ◽  
Wide Scale ◽  
Scale Test ◽  
Control Disease ◽  
Rapid Laboratory ◽  
Operator Curve

The ongoing outbreak of coronavirus disease 2019 (COVID-19), which impairs the functionality of several organs, represents a major threat to human health. One of the hardest challenges in the fight against COVID-19 is the development of wide-scale, effective, and rapid laboratory tests to control disease severity, progression, and possible sudden worsening. Monitoring patients in real-time is highly demanded in this pandemic era when physicians need reliable and quantitative tools to prioritize patients’ access to intensive care departments. In this regard, salivary biomarkers are extremely promising, as they allow for the fast and non-invasive collection of specimens and can be repeated multiple times. Methods: We compare salivary levels of immunoglobulin A subclasses (IgA1 and IgA2) and free light chains (kFLC and λFLC) in a cohort of 29 SARS-CoV-2 patients and 21 healthy subjects. Results: We found that each biomarker differs significantly between the two groups, with p-values ranging from 10−8 to 10−4. A Receiving Operator Curve analysis shows that λFLC level is the best-suited candidate to discriminate the two groups (AUC = 0.96), with an accuracy of 0.94 (0.87–1.00 95% CI), a precision of 0.91 (0.81–1.00 95% CI), a sensitivity of 1.00 (0.96–1.00 95% CI), and a specificity of 0.86 (0.70–1.00 95% CI). Conclusion: These results suggest λFLC as an ideal indicator of patient conditions. This hypothesis is strengthened by the consideration that the λFLC half-life (approximately 6 h) is significantly shorter than the IgA one (21 days), thus confirming the potential of λFLC for effectively monitoring patients’ fluctuation in real-time.

Relaxation Increases Salivary Immunoglobulin a

1987 ◽  
Vol 61 (2) ◽  
pp. 623-629 ◽  
Author(s):  
Ronald G. Green ◽  
Marsha L. Green
Keyword(s):  
Immune System ◽  
Salivary Cortisol ◽  
Immunoglobulin A ◽  
High Stress ◽  
Relaxation Response ◽  
Control Group ◽  
Coping Skill ◽  
Relaxation Methods ◽  
Eyes Closed ◽  
Salivary Immunoglobulin A

While research indicates that high stress may be immunosuppressive, little is known about the effects of relaxation on the immune system. To determine whether relaxation is immunoenhancing, 50 volunteer college students were randomly assigned to one of four relaxation methods (Benson's relaxation response, guided visualization, massage, lying quietly with eyes closed, or a touching-control group). Salivary immunoglobulin A (S-IgA) and salivary Cortisol levels were recorded before and after one 20-min. relaxation session. Subjects in the relaxation response, visualization, and massage groups showed a significant increase in S-IgA concentrations from the before to the after relaxation samples. Also, post-relaxation S-IgA concentrations were significantly higher in the relaxation response, visualization, and massage groups than in the touching-control group. Salivary Cortisol did not change significantly. These data suggest that one component of the immune system, S-IgA, may be enhanced by the practice of a coping skill such as relaxation.

scholarly journals Salivary Biomarkers and Training Load During Training and Competition in Paralympic Swimmers

2018 ◽  
Vol 13 (7) ◽  
pp. 839-843 ◽  
Author(s):  
Ciara Sinnott-O’Connor ◽  
Thomas M. Comyns ◽  
Alan M. Nevill ◽  
Giles D. Warrington
Keyword(s):  
Stress Response ◽  
Stress Responses ◽  
Salivary Cortisol ◽  
Perceived Exertion ◽  
Immunoglobulin A ◽  
Training Load ◽  
Rating Of Perceived Exertion ◽  
Alpha Amylase ◽  
Salivary Biomarkers ◽  
Paralympic Games

Context: Stress responses in athletes can be attributed to training and competition, where increased physiological and psychological stress may negatively affect performance and recovery. Purpose: To examine the relationship between training load (TL) and salivary biomarkers immunoglobulin A (IgA), alpha-amylase (AA), and cortisol across a 16-wk preparation phase and 10-d competition phase in Paralympic swimmers. Methods: Four Paralympic swimmers provided biweekly saliva samples during 3 training phases—(1) normal training, (2) intensified training, and (3) taper—as well as daily saliva samples in the 10-d Paralympic competition (2016 Paralympic Games). TL was measured using session rating of perceived exertion. Results: Multilevel analysis identified a significant increase in salivary immunoglobulin A (sIgA: 94.98 [27.69] μg·mL−1), salivary alpha-amylase (sAA: 45.78 [19.07] μg·mL−1), and salivary cortisol (7.92 [2.17] nM) during intensified training concurrent with a 38.3% increase in TL. During the taper phase, a 49.5% decrease in TL from the intensified training phase resulted in a decrease in sIgA, sAA, and salivary cortisol; however, all 3 remained higher than baseline levels. A further significant increase was observed during competition in sIgA (168.69 [24.19] μg·mL−1), sAA (35.86 [16.67] μg·mL−1), and salivary cortisol (10.49 [1.89] nM) despite a continued decrease (77.8%) in TL from the taper phase. Conclusions: Results demonstrate that performance in major competition such as Paralympic games, despite a noticeable reduction in TL, induces a stress response in athletes. Because of the elevated stress response observed, modifications to individual postrace recovery protocols may be required to enable athletes to maximize performance across all 10 d of competition.

Investigation of the Relationship Between Occupational Stress and Temporomandibular Joint Disorders by Measuring Salivary Cortisol and Immunoglobulin a Levels in Students of Qom Dental School

2021 ◽  
Author(s):  
Yasamin Barakian ◽  
Samira Hajisadeghi ◽  
Elham Keykha ◽  
Abolfazl Mohammadbeigi ◽  
Alireza Karimi
Keyword(s):  
Temporomandibular Joint ◽  
Occupational Stress ◽  
Salivary Cortisol ◽  
Immunoglobulin A ◽  
Temporomandibular Joint Disorders ◽  
Dental School ◽  
P Value ◽  
Salivary Biomarkers ◽  
The Mean ◽  
The Relationship

Abstract Objectives Occupational stress is defined as a lack of coordination between job requirements and individual abilities. This stress relates to several salivary biomarkers. Stress plays an important role in creating temporomandibular disorder (TMD). In this study we aimed to investigate the relationship between stress and TMD by examining the occupational stress using dental environment stress (DES) questionnaire and measuring the stress markers in saliva including cortisol and immunoglobulin A in fourth to sixth year students of Qom Dental School. Methods In present study, 60 students participated. At first, a clinical examination was performed based on the RDC/TMD method to determine the temporomandibular joint status, then a DES questionnaire was completed to determine the occupational stress level and finally a sample of saliva was taken from the students and the amounts of salivary cortisol and IgA were measured by enzyme-linked immunosorbent assay (ELISA). Results The mean cortisol and IgA levels were 4.74 ± 2.80 ng/ml and 220.26 ± 121.22 µg/ml, respectively and the mean score of the DES questionnaire was 2.48 ± 0.58. In this study, 24 patients (40%) suffered from TMD. There was no correlation between cortisol and IgA levels with the DES score (p value > 0.05). There was no significant relationship between TMD and three variables of cortisol, IgA and DES scores (p value > 0.05). Conclusion Stress is one of the most important causes of TMD. Salivary biomarkers can be useful markers for determining stress in people with TMD but this issue was not confirmed in our study. Clinical relevance: In this study, no relationship was observed between TMD and occupational stress.

scholarly journals Salivary Biomarkers in COVID-19 Patients: The Rabbit out of the Hat!

2021 ◽  
Author(s):  
Cecilia Napodano ◽  
Cinzia Callà ◽  
Antonella Fiorita ◽  
Mariapaola Marino ◽  
Eleonora Taddei ◽  
...  
Keyword(s):  
Real Time ◽  
Immunoglobulin A ◽  
Free Light Chains ◽  
P Values ◽  
Non Invasive ◽  
Salivary Biomarkers ◽  
Wide Scale ◽  
Control Disease ◽  
Rapid Laboratory ◽  
Performance Ranking

Background: The ongoing outbreak of Coronavirus Disease 2019 (COVID-19) represents a major threat to human health, which impairs the functionality of several organs. One of the hardest challenges in the fight against COVID-19 is the development of wide-scale, effective, and rapid laboratory tests to control disease severity, progression, and possible sudden worsening. Monitoring patients in real-time is indeed highly demanded in this pandemic era when physicians need reliable and quantitative tools to prioritize patients’ access to intensive care departments. In this regard, salivary biomarkers are extremely promising, as they allow for a fast and non-invasive specimens’ collection, which can be repeated multiple times. Methods: We compare salivary levels of immunoglobulin A subclasses (IgA1 and IgA2) and free-light chains (FLC k and λ) in a cohort of 29 SARS-CoV-2 patients and 21 healthy subjects. Results: We found that each biomarkers differs significantly between the two groups, with p-values ranging from 10-8 to 10-4. The performance ranking of these markers, shows that λFLC level (p=1.4e-8) is the best-suited candidate to discriminate the two groups, with an accuracy of 0.94 (0.87-1.00 95% CI), a precision of 0.91 (0.81-1.00 95% CI), a sensitivity of 1.00 (0.96-1.00 95% CI) and a specificity of 0.86 (0.70-1.00 95% CI). Conclusion: These results suggest λFLC as an ideal indicator of patient conditions. This is more strengthened in consideration that λFLC half-life (approximately 6 hours) is significantly shorter than the IgA one (21 days): thus λFLC appears displaying the potential to effectively monitor patients fluctuation in real-time.

scholarly journals Circadian Rhythm of Salivary Immunoglobulin A and Associations with Cortisol as A Stress Biomarker in Captive Asian Elephants (Elephas maximus)

Animals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 157 ◽  
Author(s):  
Tithipong Plangsangmas ◽  
Janine L. Brown ◽  
Chatchote Thitaram ◽  
Ayona Silva-Fletcher ◽  
Katie L. Edwards ◽  
...  
Keyword(s):  
Circadian Rhythm ◽  
Salivary Cortisol ◽  
Least Squares Method ◽  
Linear Trend ◽  
Immunoglobulin A ◽  
Generalized Least Squares ◽  
Asian Elephants ◽  
Generalized Least Squares Method ◽  
Cortisol Responses ◽  
Salivary Immunoglobulin A

Salivary immunoglobulin A (sIgA) has been proposed as a potential indicator of welfare for various species, including Asian elephants, and may be related to adrenal cortisol responses. This study aimed to distinguish circadian rhythm effects on sIgA in male and female Asian elephants and compare patterns to those of salivary cortisol, information that could potentially have welfare implications. Subjects were captive elephants at an elephant camp in Chiang Mai province, Thailand (n = 5 males, 5 females). Salivette® kits were used to collect saliva from each elephant every 4 h from 06:00 to 22:00 h for 3 consecutive days (n = 15 samples/elephant). Enzyme immunoassays were used to quantify concentrations of IgA and cortisol in unextracted saliva. Circadian rhythm patterns were determined using a generalized least-squares method. Both sIgA and cortisol followed a circadian rhythm, although the patterns differed. sIgA displayed a daily quartic trend, whereas cortisol concentrations demonstrated a decreasing linear trend in concentrations throughout the day. There was no clear relationship between patterns of sIgA and salivary cortisol, implying that mechanisms of control and secretion differ. Results demonstrate for the first time that circadian rhythms affect sIgA, and concentrations follow a daily quartic pattern in Asian elephants, so standardizing time of collection is necessary.

Methods for the Quantification of Salivary Cortisol and of a-amylase in Biosensors and Portable Devices

2018 ◽  
Vol 68 (12) ◽  
pp. 2857-2859
Author(s):  
Cristina Mihaela Ghiciuc ◽  
Andreea Silvana Szalontay ◽  
Luminita Radulescu ◽  
Sebastian Cozma ◽  
Catalina Elena Lupusoru ◽  
...  
Keyword(s):  
Real Time ◽  
Medical Practice ◽  
Salivary Cortisol ◽  
Clinical Studies ◽  
Large Scale ◽  
Psychological Research ◽  
Portable Devices ◽  
Salivary Amylase ◽  
Specificity And Sensitivity

There is an increasing interest in the analysis of salivary biomarkers for medical practice. The objective of this article was to identify the specificity and sensitivity of quantification methods used in biosensors or portable devices for the determination of salivary cortisol and salivary a-amylase. There are no biosensors and portable devices for salivary amylase and cortisol that are used on a large scale in clinical studies. These devices would be useful in assessing more real-time psychological research in the future.

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