Aktywność wysiewania α-synukleiny w błonie śluzowej węchu w COVID-19
Aktywność zasiewania α-synukleiny w błonie śluzowej węchu w COVID-19 – badanie pilotażowe
Loss of the sense of smell is a characteristic feature of COVID-19 and likely related to viral invasion of the olfactory mucosa but is also a prodromal feature of PD. This constellation has kindled concerns that COVID-19 - similar to the Spanish Flu Pandemic in 1918 - might trigger a second wave of post-infectious parkinsonism. The main objective of the study is to probe for the presence of pathological α-synuclein assemblies in the olfactory mucosa of patients with COVID-19.
Przegląd badań
Status
Status
Warunki
Warunki
Interwencja / Leczenie
Interwencja / Leczenie
Szczegółowy opis
Deposits of misfolded proteins are the cause of frequent neurological diseases such as Alzheimer's or Parkinson's disease. In Parkinson's disease, the misfolded protein alpha-synuclein is found in the olfactory mucosa of the nose, which contains nerve cells responsible for smell perception, from which the misfolded alpha-synuclein spreads further into the brain. The mechanisms that lead to this misfolding and the resulting damage to the nervous system are still unclear. One hypothesis is that inflammatory processes such as viral infections trigger the misfolding of alpha-synuclein in Parkinson's disease and can lead to its deposition. Based on this assumption and the striking involvement of the sense of smell in SARS-CoV-2 infection (COVID-19), the aim of this study is to investigate the olfactory epithelium of the nasal mucosa of COVID-19 patients for possible alpha-synuclein deposits by using nasal swabs.
We hypothesize that the invasion of olfactory neurons and subsequent inflammatory responses could trigger α-synuclein misfolding and aggregation. Therefore, we aim to investigate for the presence of α-synuclein seeding activity in the olfactory mucosa of subjects who have recovered from COVID-19 by using Real-time Quaking-Induced Conversion (RT-QuIC).
Typ studiów
Typ studiów
Zapisy (Rzeczywisty)
Zapisy
Kontakty i lokalizacje
Lokalizacje studiów
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Innsbruck, Austria
- Medical University of Innsbruck
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Kryteria uczestnictwa
Kryteria kwalifikacji
Kryteria kwalifikacji
Wiek uprawniający do nauki
Akceptuje zdrowych ochotników
Płeć kwalifikująca się do nauki
Metoda próbkowania
Badana populacja
Person living in the Tirol area
Opis
Inclusion Criteria:
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Participants must be 18 years or older;
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Participants are able to understand the aim of the study and the planned procedures;
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Written informed consent form;
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Participants fulfilling the criteria for one of the following groups:
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COVID-19 patients with OD:
- Prior history of COVID-19 (clinical documentation plus corresponding positive PCR test) at least 3 months ago;
- OD (Sniffin' sticks discrimination and identification both <13/16 items correct) persisting for at least 3 months after SARS-CoV-2 infection;
- Negative antigen test on day of study inclusion;
- No evidence of structural nasal pathologies possibly responsible for OD.
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COVID-19 patients without OD:
- Prior history of COVID-19 (clinical documentation plus corresponding positive PCR test) at least 3 months ago;
- No history of/current OD (Sniffin' sticks discrimination and identification both >12/16 items correct);
- Negative antigen test on day of study inclusion.
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Healthy Controls:
- No history of COVID-19 and negative SARS-CoV-2 antibody test unless subject is vaccinated;
- Negative antigen test on day of study inclusion;
- No history of OD;
- Subjective and objective normal olfactory function (Sniffin' sticks discrimination and identification both >12/16 items correct). 10 Application for Clinical Research
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Patients with Parkinson's disease (n = 50):
- Confirmed diagnosis of PD according to diagnostic criteria.
- No history of COVID-19 and negative SARS-CoV-2 antibody test unless subject is vaccinated;
- Negative antigen test on day of study inclusion;
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Exclusion Criteria:
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Patients:
- History of OD prior to SARS-CoV-2 infection;
- Pre-existent relevant neurological disorder;
- Positive SARS-CoV-2 antigen test on day of study inclusion;
- Patients with OD only: structural pathology possibly responsible for OD.
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Healthy controls:
- Pre-existent relevant neurological disorder;
- History of/presence of olfactory dysfunction (Sniffin' sticks discrimination and identification both <13/16 items correct);
- Positive SARS-CoV-2 antigen test on day of study inclusion;
- Positive SARS-CoV-2 antibody test unless subject is vaccinated.
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Patients with Parkinson's disease:
- History of COVID-19;
- Positive SARS-CoV-2 antigen test on day of study inclusion;
- Positive SARS-CoV-2 antibody test unless subject is vaccinated.
Plan studiów
Jak projektuje się badanie?
Szczegóły projektu
- Modele obserwacyjne: CASE_CONTROL
- Perspektywy czasowe: PROSPECTIVE
Liczba grup / kohort
Kohorty i interwencje
Grupa / KohortaGrupa / Kohorta |
Interwencja / LeczenieInterwencja / Leczenie |
|---|---|
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COVID-19 patients with olfactory dysfunction
COVID-19 patients with olfactory dysfunction |
RT-QuIC is increasingly used as diagnostic tools in synucleinopathies and has shown high sensitivity and specificity for the detection of α-synuclein seeds in CSF and tissue samples, including the olfactory mucosa in different patients' cohorts including Parkinson's patientients, patients with REM sleep behavior disorder (RBD), and patients with dementia with Lewy bodies. |
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COVID-19 patients without olfactory dysfunction
COVID-19 patients without olfactory dysfunction |
RT-QuIC is increasingly used as diagnostic tools in synucleinopathies and has shown high sensitivity and specificity for the detection of α-synuclein seeds in CSF and tissue samples, including the olfactory mucosa in different patients' cohorts including Parkinson's patientients, patients with REM sleep behavior disorder (RBD), and patients with dementia with Lewy bodies. |
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Healthy controls
Healthy controls |
RT-QuIC is increasingly used as diagnostic tools in synucleinopathies and has shown high sensitivity and specificity for the detection of α-synuclein seeds in CSF and tissue samples, including the olfactory mucosa in different patients' cohorts including Parkinson's patientients, patients with REM sleep behavior disorder (RBD), and patients with dementia with Lewy bodies. |
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Patients with Parkinson's disease
Patients with Parkinson's disease |
RT-QuIC is increasingly used as diagnostic tools in synucleinopathies and has shown high sensitivity and specificity for the detection of α-synuclein seeds in CSF and tissue samples, including the olfactory mucosa in different patients' cohorts including Parkinson's patientients, patients with REM sleep behavior disorder (RBD), and patients with dementia with Lewy bodies. |
Co mierzy badanie?
Podstawowe miary wyniku
Podstawowe miary wyniku
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
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Demonstration of ⍺-synuclein seeding activity in the OM (assessed by RT-QuIC) in subjects who recovered from COVID-19 compared to healthy controls.
Ramy czasowe: 2 years
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detection ⍺-synuclein seeding activity in olfactory mucosa of different patient groups |
2 years
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Współpracownicy i badacze
Sponsor
Sponsor
Śledczy
Śledczy
- Krzesło do nauki: Beatrice Heim, MD PhD, Medical University Innsbruck
Daty zapisu na studia
Główne daty studiów
Rozpoczęcie studiów (Rzeczywisty)
Rozpoczęcie studiów
Zakończenie podstawowe (Rzeczywisty)
Zakończenie podstawowe
Ukończenie studiów (Rzeczywisty)
Ukończenie studiów
Daty rejestracji na studia
Pierwszy przesłany
Pierwszy przesłany
Pierwszy przesłany, który spełnia kryteria kontroli jakości
Pierwszy przesłany, który spełnia kryteria kontroli jakości
Pierwszy wysłany (Rzeczywisty)
Pierwszy wysłany
Aktualizacje rekordów badań
Ostatnia wysłana aktualizacja (Rzeczywisty)
Ostatnia wysłana aktualizacja
Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości
Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości
Ostatnia weryfikacja
Ostatnia weryfikacja
Więcej informacji
Terminy związane z tym badaniem
Dodatkowe istotne warunki MeSH
Inne numery identyfikacyjne badania
Inne numery identyfikacyjne badania
- 1448/2020
Informacje o lekach i urządzeniach, dokumenty badawcze
Bada produkt leczniczy regulowany przez amerykańską FDA
Bada produkt urządzenia regulowany przez amerykańską FDA
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