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Effect of Systemic Retinoic Acid Use on Micro Ribonucleic Acid (mRNA) Expression

Evaluation of the Effect of Systemic Retinoic Acid Use on Micro Ribonucleic Acid (mRNA) Expression in Saliva and Serum

Status
Not yet recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07142070
Enrollment
25
Registered
2025-08-26
Start date
2025-09-01
Completion date
2026-02-01
Last updated
2025-08-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Inflammation, Periodontal Diseases

Keywords

periodontal disease, miRNA

Brief summary

Ribonucleic acids (RNA) are molecules that transfer genetic information from the nucleus to the cytoplasm for protein translation. A subgroup of non-coding or non-messenger RNAs, known as microRNAs (miRNAs), regulates the expression of complementary mRNAs without coding for proteins. In this study, the investigators aimed to evaluate the effect of systemically administered oral isotretinoin on gingival health in terms of microRNA (miRNA), a molecule of interest in periodontal research, before, during, and after treatment.

Detailed description

Healthy participants (n:25) enrolled for this study. Samples will be collected for each patient at the following time points: immediately before the initiation of retinoic acid treatment, during treatment at week 5 (T1), during treatment at month 5 (T2), and three months after the end of treatment (T3).

Interventions

OTHERSaliva, serum sampling

Saliva were collected to analyze the selected markers as unstimulated samples during the early hours of the day. The saliva was centrifuged and then transferred into Eppendorf tubes. Venous puncture was performed after saliva collection and 10 mL of blood samples were collected by qualified staff from each participant (Periopaper, Oraflow Inc., Plainview, NY, USA). Saliva, serum were then stored at -80 °C until analysis.

oral isotretinoin

Sponsors

Medipol University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE

Intervention model description

Saliva, serum collected for analyzing tnf-a, miRNA

Eligibility

Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
Yes

Inclusion criteria

* systemically healthy * over 18 and under 45 years of age * have at least 20 natural permanent teeth in occlusion excluding third molars, * not be pregnant, * have not used any antimicrobial and/or anti-inflammatory drugs in the past 3 months, * have not received periodontal treatment in the past 6 months, * have not undergone surgical periodontal treatment within the past year.

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) * current medications affecting gingival health (calcium channel blockers, phenytoin, cyclosporine, and hormone replacement therapy) * pregnancy

Design outcomes

Primary

MeasureTime frameDescription
Bleeding on probing6 monthsreferring to bleeding that is induced by gentle manipulation of the tissue at the depth of the gingival sulcus, or interface between the gingiva and a tooth.
Pocket probing depth6 monthsMeasurement of the depth of a sulcus or periodontal pocket determined by measuring distance from a gingival margin to the base of the sulcus or pocket with a calibrated periodontal probe.
Clinical attachment level6 monthsClinical attachment level (or loss, CAL) is a more accurate indicator of the periodontal support around a tooth than probing depth alone. CAL is measured from a fixed point on the tooth that does not change, the CEJ. To calculate CAL, two measurements are needed: distance from the gingival margin to the CEJ and probing depth. In recession: probing depth (+) gingival margin to the CEJ (add). In tissue overgrowth: probing depth (-) gingival margin to the CEJ (subtract)

Secondary

MeasureTime frameDescription
Saliva, serum samples processing and analyses1 monthSaliva, serum samples obtained for each patient were used for cytokine analysis. Prepared samples were analyzed for TNF-a using commercial ELISA kits. RT-qPCR-based miRNA gene expression analyses will be performed using Two-Step qRT-PCR Kits (Thermo Fisher Scientific, MA, USA).

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026