NCT06294756

Brief Summary

The goal of this double-blind, interventional, randomized case-control, pilot trial is to evaluate the effects of active sulfurous (STW) versus placebo (SDW) inhalations on blood test parameters, serum inflammatory cytokines, spirometry data, as well as qualitative and quantitative changes in the nasal microbiome of subjects affected by long Covid. The main questions it aims to answer are:

  • if STW inhalations are effective on respiratory issues due to long covid compared to the placebo inhalation (SDW)
  • if STW inhalations are effective on long covid related fatigue issues compared to the placebo inhalation (SDW)
  • if H2S inhaled with STW is effective in modulating (decreasing) cytokines which are related to long covid cytokine storm compared to placebo inhalation with no H2S (SDW)
  • if STW inhalation modify nasal microbiome both from a qualitative and quantitative point of view respect to placebo inhalation (SDW) Participants will be randomly assigned to active inhalations (STW) or placebo inhalations (SDW) arm and subjected to 12 consecutive sessions of 20 minutes. Both arms will be tested for:
  • cytokines and inflammatory markers concentration (IL1b, IL6, ACE, GSS, S100B, Hs-CRP)
  • spirometry (resting, forced, DLCO)
  • exertion response (6 minutes walking test)
  • nasal microbiome sampling at visit 1 (enrolment), at visit 2(right after the inhalation treatment) and at visit 3 (3 months after treatment). Researchers will compare results reported by STW to those of SDW group to see if significative differences are detectable.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
30

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started May 2023

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 30, 2023

Completed
2 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 1, 2023

Completed
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

September 30, 2023

Completed
4 months until next milestone

First Submitted

Initial submission to the registry

February 9, 2024

Completed
26 days until next milestone

First Posted

Study publicly available on registry

March 6, 2024

Completed
Last Updated

March 6, 2024

Status Verified

March 1, 2024

Enrollment Period

2 months

First QC Date

February 9, 2024

Last Update Submit

March 2, 2024

Conditions

Keywords

LONG-COVIDspaInhalation therapySulfurous thermal waterH2SNasal microbiome

Outcome Measures

Primary Outcomes (6)

  • To determine whether Sulfurous Thermal water (STW) inhalations may have effects on post covid-pulmonary sequelae assessing changes in pulmonar functionality through spirometric parameters.

    To assess the prior treatment whole pulmonary functionality by spirometry and DLCO spirometry

    Day1

  • To determine whether Sulfurous Thermal water (STW) inhalations may have effects on post covid-pulmonary sequelae assessing changes in pulmonar functionality through spirometric parameters.

    To assess the whole pulmonary functionality at 14 days since inhalations start by spirometry and DLCO spirometry

    Day 14

  • To determine whether Sulfurous Thermal water (STW) inhalations may have effects on post covid-pulmonary sequelae assessing changes in pulmonar functionality through spirometric parameters

    To assess the whole pulmonary functionality at 90 days since inhalations start by spirometry and DLCO spirometry.

    Day 90

  • To determine whether Sulfurous Thermal water (STW) inhalations can improve the cardiopulmonary response to physical exertion measured as SpO2, Heart rate, Borg score and traversed meters in patients affected by long COVID

    To assess the cardiopulmonary response to physical exertion prior inhalations therapy with the six minutes walking test (6MWT)

    Day 1

  • To determine whether Sulfurous Thermal water (STW) inhalations can improve the cardiopulmonary response to physical exertion measured as SpO2, Heart rate, Borg score and traversed meters in patients affected by long COVID

    To assess the cardiopulmonary response involved during physical exertion at 14 days since inhalations start with the six minutes walking test (6MWT)

    Day 14

  • To determine whether Sulfurous Thermal water (STW) inhalations can improve the cardiopulmonary response to physical exertion measured as SpO2, Heart rate, Borg score and traversed meters in patients affected by long COVID

    To assess the cardiopulmonary response to physical exertion at 90 days since inhalations start with the six minutes walking test (6MWT)

    Day 90

Secondary Outcomes (6)

  • To assess if H2S present in STW can interfere with concentration of inflammatory markers ( as IL1B, IL-6, ACE, S100B, GSS, Hs-CRP) typically alterated in long covid patients.

    Day 1

  • To assess if H2S present in STW can interfere with concentration of inflammatory markers ( as IL1B, IL-6, ACE, S100B, GSS, Hs-CRP) typically alterated in long covid patients.

    Day 14

  • To assess if H2S present in STW can interfere with concentration of inflammatory markers ( as IL1B, IL-6, ACE, S100B, GSS, Hs-CRP) typically alterated in long covid patients.

    Day 90

  • to assess whether thermal water inhalation with sulfurous water may determine qualitative and quantitative changes of the nasal microbiome by assessing alpha and beta diversity after nasal sample collection

    Day 1

  • to assess whether thermal water inhalation with sulfurous water may determine qualitative and quantitative changes of the nasal microbiome by assessing alpha and beta diversity after nasal sample collection

    Day 14

  • +1 more secondary outcomes

Other Outcomes (2)

  • to assess whether thermal water inhalation determine changes in the perceived impact of respiratory related impairment on the quality of life (Qol) through a validate Saint George respiratory questionnaire

    Day 1

  • to assess whether thermal water inhalation determine changes in the perceived impact of respiratory related impairment on the quality of life (Qol) through a validate Saint George respiratory questionnaire

    Day 90

Study Arms (2)

Long covid patients undergoing inhalations with sulfurous thermal water (STW)

ACTIVE COMPARATOR

Adult Outpatients aged 18-75, presenting to the spa facility with an independent prescription of inhalation therapy with sulfurous water for post-COVID respiratory issues. Active arm treatment consisted of 12 consecutive sessions of sulfurous thermal water (STW) from Visit 1 for 12 days. Re-assessment of study analyses was performed on Visit 2 after, 14 days from Visit 1. The follow-up (Visit 3) was 90 days after Visit 1.

Other: Inhalation of Sulfurous Thermal Water

Long covid patients undergoing inhalations with Sterile Distilled non-pyrogenic Water (SDW)

PLACEBO COMPARATOR

Adult Outpatients aged 18-75, presenting to the spa facility with an independent prescription of inhalation therapy with sulfurous water for post-COVID respiratory issues. Placebo arm treatment consisted of 12 consecutive sessions of Sterile Distilled non-pyrogenic Water (SDW) from Visit 1 for 12 days. Re-assessment of study analyses was performed on Visit 2 after, 14 days from Visit 1. The follow-up (Visit 3) was 90 days after Visit 1.

Other: Inhalation of Sterile Distilled non-pyrogenic Water

Interventions

Active Inhalation protocol based on 12 consecutive sessions, 20 minutes each, once a day from Visit 1 through a conventional thermal water aerosolization Faset™system (Faset Spa, Trezzano sul Naviglio, Milan, Italy) delivering particles of TW with a diameter between 0.6 µm \<MMAD \< 5 µm. Treatment consisted of 10 minutes of warm steam and 10 minutes of aerosol inhalation with nasal prongs.

Also known as: STW aerosol, STW steam inhalation
Long covid patients undergoing inhalations with sulfurous thermal water (STW)

Placebo Inhalation protocol based on 12 consecutive sessions, 20 minutes each, once a day from Visit 1 through a modified thermal water aerosolization Faset™system, previously disconnected from the hydraulic circuit that supplied TW and connected to non-pyrogenic sterile water reservoirs (Highly depurated water- Pharmaceutical grade FU-for external and internal use, Makeitlab, Canosa di Puglia, BT, Italy). Treatment consisted of 10 minutes of warm steam and 10 minutes of aerosol inhalation with nasal prongs delivering particles of SDW with a diameter between 0.6 µm \<MMAD \< 5 µm.

Also known as: SDW aerosol, SDW steam inhalation
Long covid patients undergoing inhalations with Sterile Distilled non-pyrogenic Water (SDW)

Eligibility Criteria

Age18 Years - 75 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • · Adults aged from 18 to 75.
  • Willing and capable of giving informed consent.
  • Participants with smoking habits or not
  • Participants with COVID vaccination or not
  • Negative to Sars-Cov2 rapid swabs at screening visit
  • Certified previous Sars Cov2 infection (Regional Public Health Service archives of Sars Cov2 infection)
  • Certified diagnosis of long COVID (post-infective onset symptoms only, lasting more than 4 months since swab negativisation).
  • Any severity of Covid symptoms during acute infection (Home care, ICU admission, ventilation)
  • Participants treated with inhaled bronchodilators or not.
  • Willing and able to comply with scheduled visits, laboratory tests, and other study procedures.

You may not qualify if:

  • · Obesity (BMI\>32).
  • Walking impairment.
  • Pre-existing other comorbidities affecting the airways (e.g., asthma, rhinitis, etc.).
  • Therapy with inhaled, IV, or IM steroids.
  • Pre-existing diagnosis of depression, psychological or psychiatric disorders.
  • Patients currently recruited to other clinical trials.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Acque Albule, Terme di Roma

Tivoli, Rome, 00019, Italy

Location

Related Publications (9)

  • Fowora MA, Aiyedogbon A, Omolopo I, Tajudeen AO, Olanlege A-L, Abioye A, Akintunde GB, Salako BL. Effect of nasal carriage of Bacillus species on COVID-19 severity: a cross-sectional study. Microbiol Spectr. 2024 Feb 6;12(2):e0184323. doi: 10.1128/spectrum.01843-23. Epub 2024 Jan 9.

    PMID: 38193730BACKGROUND
  • Davis HE, McCorkell L, Vogel JM, Topol EJ. Long COVID: major findings, mechanisms and recommendations. Nat Rev Microbiol. 2023 Mar;21(3):133-146. doi: 10.1038/s41579-022-00846-2. Epub 2023 Jan 13.

  • Huerne K, Filion KB, Grad R, Ernst P, Gershon AS, Eisenberg MJ. Epidemiological and clinical perspectives of long COVID syndrome. Am J Med Open. 2023 Jun;9:100033. doi: 10.1016/j.ajmo.2023.100033. Epub 2023 Jan 18.

  • Low RN, Low RJ, Akrami A. A review of cytokine-based pathophysiology of Long COVID symptoms. Front Med (Lausanne). 2023 Mar 31;10:1011936. doi: 10.3389/fmed.2023.1011936. eCollection 2023.

  • Ribeiro Carvalho CR, Lamas CA, Chate RC, Salge JM, Sawamura MVY, de Albuquerque ALP, Toufen Junior C, Lima DM, Garcia ML, Scudeller PG, Nomura CH, Gutierrez MA, Baldi BG; HCFMUSP Covid-19 Study Group. Long-term respiratory follow-up of ICU hospitalized COVID-19 patients: Prospective cohort study. PLoS One. 2023 Jan 20;18(1):e0280567. doi: 10.1371/journal.pone.0280567. eCollection 2023.

  • Maccarone MC, Masiero S. Spa therapy interventions for post respiratory rehabilitation in COVID-19 subjects: does the review of recent evidence suggest a role? Environ Sci Pollut Res Int. 2021 Sep;28(33):46063-46066. doi: 10.1007/s11356-021-15443-8. Epub 2021 Jul 17.

  • Bazhanov N, Escaffre O, Freiberg AN, Garofalo RP, Casola A. Broad-Range Antiviral Activity of Hydrogen Sulfide Against Highly Pathogenic RNA Viruses. Sci Rep. 2017 Jan 20;7:41029. doi: 10.1038/srep41029.

  • Antonelli M, Donelli D. Respiratory rehabilitation for post-COVID19 patients in spa centers: first steps from theory to practice. Int J Biometeorol. 2020 Oct;64(10):1811-1813. doi: 10.1007/s00484-020-01962-5. Epub 2020 Jul 24.

  • Merenstein C, Bushman FD, Collman RG. Alterations in the respiratory tract microbiome in COVID-19: current observations and potential significance. Microbiome. 2022 Oct 5;10(1):165. doi: 10.1186/s40168-022-01342-8.

Related Links

MeSH Terms

Conditions

Post-Acute COVID-19 Syndrome

Condition Hierarchy (Ancestors)

COVID-19Pneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract DiseasesPost-Infectious DisordersChronic DiseaseDisease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Study Officials

  • Mario Fontana, Prof, MD

    La Sapienza, University of Rome

    STUDY CHAIR
  • Serena Crucianelli, MD

    La Sapienza, University of Rome

    PRINCIPAL INVESTIGATOR
  • Alessia Mariano, PhD

    La Sapienza, University of Rome

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Neither the participants nor any of the medical researchers or laboratory staff involved in the screening, enrolment, clinical evaluation, monitoring, and laboratory as well as statistics of the participant's analyses were aware of the study intervention received (STW vs SDW). A randomization list (1:1 active vs placebo) was created prior to recruiting. The inhalation assistant randomized the participant according to the list and administered the intervention. Therefore, the inhalation assistant was unblinded to the treatment assigned but blinded to the medical condition of the participants.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: The study is a double-blind, interventional, randomized case-control, pilot trial assessing the efficacy of sulfureous thermal water (STW) inhalations in patients diagnosed with long-COVID. The eligible subjects were randomized in a 1:1 ratio to either: active (STW) or placebo (SDW) group for the inhalation therapy and tested at 3 timepoints: Visit 1 (prior treatment), Visit 2 (just after treatment) , Visit 3 (3 months after treatment).
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Associate Professor of Biochemistry, Resident physician

Study Record Dates

First Submitted

February 9, 2024

First Posted

March 6, 2024

Study Start

May 30, 2023

Primary Completion

August 1, 2023

Study Completion

September 30, 2023

Last Updated

March 6, 2024

Record last verified: 2024-03

Data Sharing

IPD Sharing
Will not share

Locations