Using Glialia for Treating Persistent Perceptual Postural Dizziness

Phase 4

Recruiting

• Conditions: Persistent Postural Perceptual Dizziness

• Registration Number: NCT06741358
• Lead Sponsor: I.R.C.C.S. Fondazione Santa Lucia

Brief Summary

This pilot study will involve 30 participants recruited from the Santa Lucia Foundation IRCCS, including 20 patients diagnosed with Persistent Perceptual Postural Dizziness (PPPD), and might or might not have previously contracted Sars Cov2 infection. They who will be randomly assigned to receive either the Glialia supplement or placebo. Additionally, 10 control participants who have recovered from COVID-19 will receive Glialia to help assess the influence of previous COVID-19 infection on neuroinflammation levels. The study aims to compare baseline neuroinflammation levels between PPPD patients and controls, measure changes in neuroinflammation in all groups after treatment and to determine if the reduction in neuroinflammation is more significant in the Glialia group compared to the placebo group. The trial will be conducted in a triple-blind manner, ensuring that neither participants nor researchers know the treatment assignments. Each participant will receive sachets to be taken daily for 60 days, with the study providing both the Glialia supplement and placebo at no cost.

Detailed Description

Not available

Study Timeline

• Study Start: 2024-10-11
• Status Verified: 2024-11
• Study First Submitted: 2024-12-11
• Study First Submitted QC: 2024-12-16
• Last Update Submitted: 2024-12-16
• Study First Posted: 2024-12-18
• Last Update Posted: 2024-12-18
• Primary Completion: 2025-10-10
• Study Completion: 2026-10-10

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Neuroinflammation Assessment	T0 (Baseline); T1 (60 days)	The neuroinflammation assessment will evaluate serum neurofilament light chain (NfL) levels as a biomarker for neuroinflammation in participants with PPPD and controls. Blood samples will be collected via venipuncture at the Foundation Santa Lucia IRCCS. The analysis will utilize a sensitive enzyme-linked immunosorbent assay (ELISA) method to quantify NfL levels. The Simoa NF-Light advantage kit will enable accurate detection of low concentrations. This assessment aims to compare neuroinflammation levels at baseline (T0) and after treatment (T1) across the study groups.

Secondary Outcome Measures

Name	Time	Method
Video Head Impulse Test (vHIT)	T0 (Baseline).	The Video Head Impulse Test (vHIT) is performed to assess the vestibulo-ocular reflex (VOR). Conducted before T0, this test ensures that participants do not have underlying VOR dysfunction prior to inclusion in the study.
Dizziness Handicap Inventory (DHI)	T0 (Baseline); T1 (60 days)	The Dizziness Handicap Inventory (DHI) measures the impact of dizziness on an individual's daily life and activities. Participants will complete this questionnaire at T0 and T1 to assess any changes in disability related to dizziness. The DHI provides insights into the physical, emotional, and functional limitations experienced by patients, facilitating a comprehensive evaluation of the treatment's effectiveness in improving quality of life. The maximum score for the DHI ranges from 0 to 100, with higher scores indicating greater instability.
Niigata Questionnaire	T0 (Baseline); T1 (60 days)	The Niigata questionnaire assesses subjective symptoms related to PPPD. It is administered to participants at both T0 and T1 to evaluate changes in symptom perception over the treatment period. The questionnaire consists of various items that help quantify the intensity and frequency of PPPD symptoms, allowing for a comparative analysis of symptom improvement in the PPPD-glialia and PPPD-placebo groups. The maximum score is 72, with higher scores reflecting greater instability. Each of its three domains (upright posture/walking, movement, and visual stimulation) has a maximum score of 24.
Brain Fog Scale (BFS)	T0 (Baseline); T1 (60 days)	The Brain Fog Scale (BFS) is designed to evaluate cognitive clarity and mental processing in participants. Administered at both T0 and T1, this scale focuses on self-reported cognitive difficulties, such as concentration, memory, and mental fatigue. Changes in BFS scores will help determine the cognitive effects of the treatment, particularly in the context of PPPD-related cognitive symptoms.
Personality Traits Assessment (NEO-P-I-3)	T0 (Baseline)	The NEO-P-I-3 questionnaire will be administered at T0 to evaluate personality traits, particularly focusing on neuroticism, which is relevant for understanding the psychological aspects of PPPD. This assessment will provide baseline data on individual personality profiles and allow for exploration of potential correlations between personality traits and treatment outcomes in PPPD patients. A statistical analysis will be conducted to evaluate specific areas of personality traits.
Gait Quality Assessment	T0 (Baseline); T1 (60 days)	Gait quality will be assessed using inertial sensors. Set of magneto-inertial sensors (Opal, APDM Inc., Portland, Oregon, USA) will be used during the execution of walking motor tasks. Changes of continuous accelerometer signals will be recorded.

Trial Locations

Locations (1)

Fondazione Santa Lucia IRCCS; 🇮🇹 Rome, RM, Italy