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Higher salivary cytokines correspond with more significant gum inflammation: PLOS ONE

Dr. Kamal Kant KohliWritten by Dr. Kamal Kant Kohli Published On 2023-02-17T20:00:33+05:30  |  Updated On 17 Feb 2023 2:30 PM GMT
Higher salivary cytokines correspond with more significant gum inflammation: PLOS ONE
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USA: A single score describing cytokine level in the saliva developed by researchers at NYU College of Dentistry is linked with the severity of clinical gum infection. The findings of the study were described in the journal PLOS ONE.

The "cytokine score" score holds promise for measuring how well a patient responds to treatment for gum disease, detecting ongoing inflammation related to systemic diseases, or predicting gum disease recurrence. However, more research is needed to test the score.

While more research is needed to test the “cytokine score,” it could hold promise for measuring how well a patient responds to treatment for gum disease, predicting gum disease recurrence, or detecting ongoing inflammation related to systemic diseases.

“Periodontal inflammation is not just apparent upon examination, but is reflected in the patient’s saliva,” said Angela Kamer, DMD, MS, PhD, associate professor of the Ashman Department of Periodontology & Implant Dentistry at NYU Dentistry and the study’s senior author.

Periodontal (or gum) disease is a chronic, inflammatory condition that affects roughly half of the adults. Marked by inflamed gums, which can bleed and detach from the tooth, periodontal disease results from the complex interaction between an imbalance of healthy and unhealthy bacteria under the gumline and the immune system’s response. This response produces high levels of cytokines-small proteins that signal the immune system in the inflamed gums, especially pro-inflammatory cytokines such as IL-8, IL-1β, IL-6 and TNFα.

Periodontal disease is also associated with systemic conditions including cardiovascular disease, diabetes, and Alzheimer’s. Scientists believe that gum inflammation contributes to these conditions through both indirect pathways (cytokines boosting systemic inflammation) and direct pathways (cytokines traveling to a specific organ like the heart or brain), but studying this is difficult due to the challenge of measuring cytokines in the fluid found deep in the pockets in the gums.

Fortunately, cytokines are also found in the saliva, which is easier to collect. In the PLOS ONE study, the researchers wanted to know if clinically detected gum inflammation could predict the level of cytokines found in saliva.

“Salivary cytokines are a window into the molecular make-up of the oral environment,” said Vera Tang, DDS, MS, clinical assistant professor of the Ashman Department of Periodontology & Implant Dentistry at NYU Dentistry and the study’s first author.

The researchers evaluated the gums and saliva of 67 adults, ages 45 and older, who had some degree of periodontal disease but were otherwise healthy. To measure their clinical periodontal inflammation, the researchers used a formula called the Periodontal Inflamed Surface Area (PISA), which is calculated using measurements of the depth of pockets in the gums and bleeding upon probing. PISA provides a single measure of periodontal inflammation; a higher PISA score indicates worse inflammation.

Participants were also asked to spit into sterile tubes to capture saliva samples, which were then analyzed to measure a range of both pro- and anti-inflammatory cytokines: IL-1β, IL-6, IL-8, IL-13, TNF-α, and IL-10. Led by statistician Malvin Janal, PhD, the researchers used two different ways (the Cytokine Component Index and Composite Inflammatory Index) to combine these cytokines into a single score.

They found that PISA scores were significantly associated with the new cytokine scores, independent of other factors including age, gender, smoking, and body mass index (BMI). The higher a cytokine score, the greater the periodontal inflammation.

“This demonstrates that a single score encompassing several salivary cytokines correlates with the severity of periodontal inflammation,” said Leena Palomo, DDS, MSD, professor and chair of the Ashman Department of Periodontology & Implant Dentistry at NYU Dentistry, and a study coauthor.

The researchers caution that more research is needed to validate the cytokine score in patients with different health conditions and those with all levels of periodontal disease, including healthy gums and early-stage gum disease. However, suppose the cytokine score is validated in larger and more diverse patient populations. In that case, it could be used to better understand periodontal disease progression and recurrence and the potential connection to other systemic conditions.

“With treatment for gum disease, such as scaling and planing, we know that the PISA score goes down. It would be interesting to see if the cytokine score also drops-or, if it persists, look into what that means,” added Kamer. “Is it picking up an underlying cause, like ongoing inflammation from systemic disease? Or if someone has a hyperinflammatory response, which we’d know from a high cytokine score, can it predict if periodontitis will recur or progress in the future? We hope to look into these questions in future research.”

Reference:

Vera Tang, Bubak Hamidi, Malvin N. Janal, Cheryl A. Barber, Benjamin Godder, Leena Palomo, Angela R. Kamer Published: February 15, 2023 https://doi.org/10.1371/journal.pone.0280333

PLoS ONEGum inflammationcytokinegum diseasePeriodontal diseasediabetes
Source : PLoS ONE
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Before Joining Medical Dialogues, he has served at important positions in the medical industry in India including as the Hony. Secretary of the Delhi Medical Association as well as the chairman of Anti-Quackery Committee in Delhi and worked with other Medical Councils in India. Email: editorial@medicaldialogues.in. Contact no. 011-43720751

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