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Gum health and brain health: surprising link found in Parkinson's study

NCT ID NCT07272564

Knowledge-focused Sponsor: Medipol University Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at whether gum disease (periodontitis) and Parkinson's disease are connected through inflammation. Researchers collected saliva and blood samples from 60 people—some with both conditions, some with only gum disease, and some healthy. They found that certain substances related to tryptophan, a natural amino acid, were higher in people with both diseases. This suggests a biological link between gum health and brain health, which could lead to new ways to diagnose or treat these conditions in the future.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

60 people

The number who actually took part.

Started

May 2022

Finished

Jun 2023

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 75 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * systemically healthy * clinical diagnosis of periodontitis * clinical diagnosis of periodontal health Exclusion Criteria: * history of regular use of systemic antibiotics anti-inflammatory, or antioxidant drugs (previous 3 months) * nonsurgical periodontal treatment (previous 6 months) * surgical periodontal treatment (previous 12 months) * presence of\<10 teeth * current medications affecting gingival health (calcium channel blockers, phenytoin, cyclosporine, and hormone replacement therapy) * diabetes * diagnosis of rheumatoid arthritis * pregnancy * lactating * smoking * excessive alcohol consumption.

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Conditions

The condition(s) this trial relates to.

Inflammation inflammatory disease Parkinson disease periodontal disorder periodontitis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Inflammation Periodontal diseases

Contacts and locations

Locations

  • Istanbul Medipol University, School of Dentistry

    Istanbul, Fatih, Turkey (Türkiye)

More trials for these conditions

Other studies related to the condition(s) this trial covers.