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Platelet-Rich Plasma Composition and Clinical Effects in Knee Osteoarthritis

26. april 2026 opdateret af: Viorela Mihaela Ciortea, Iuliu Hatieganu University of Medicine and Pharmacy

Study of the Composition of Platelet-rich Plasma and Its Clinical and Molecular Effect in the Biological Treatment of Knee Arthrosis

This is a prospective, observational cohort study involving 40 patients with primary knee osteoarthritis hospitalized in a rehabilitation hospital in Cluj-Napoca. All participants will receive intra-articular platelet-rich plasma (PRP) injections. The study aims to analyze PRP composition and inflammatory biomarkers to better understand disease mechanisms and evaluate treatment effectiveness.

Studieoversigt

Detaljeret beskrivelse

The study is designed as an observational, longitudinal, prospective cohort investigation focused on patients with primary degenerative pathology of the knee joint, specifically primary gonarthrosis. The target population includes individuals diagnosed with knee osteoarthritis, while the accessible population consists of patients admitted to the Clinical Rehabilitation Hospital in Cluj-Napoca.

A total of 40 consecutive patients meeting inclusion criteria will be enrolled. Each participant will undergo treatment consisting of an intra-articular injection of platelet-rich plasma (PRP) at the knee level. The consecutive inclusion approach reduces selection bias and reflects routine clinical practice.

A central component of the study is the biological characterization of PRP. The investigators will analyze its composition, particularly focusing on growth factors such as platelet-derived growth factor (PDGF), transforming growth factor beta 1 (TGF-β1), and insulin-like growth factor 1 (IGF-1). This analysis is intended to contribute to the standardization of PRP therapy in knee osteoarthritis.

In parallel, the study will assess systemic inflammatory status by measuring circulating biomarkers, including interleukins (IL-1β, IL-8, IL-18) and tumor necrosis factor alpha (TNF-α). Monitoring these biomarkers allows evaluation of the inflammatory response and provides insight into the biological effects of PRP on the intra-articular environment.

Overall, the study seeks to clarify both the pathophysiological mechanisms underlying knee osteoarthritis and the therapeutic mechanisms of PRP, while also assessing its clinical effectiveness through changes in inflammatory markers.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

40

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • Cluj
      • Cluj-Napoca, Cluj, Rumænien, 400347
        • " Iuliu Hatieganu" University of medicine and Pharmacy

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  1. Age between 40 and 80 years
  2. Diagnosis of unilateral or bilateral gonarthrosis radiological grade 2-3 Kellgren-Lawrence
  3. Knee joint pain greater than 4 on the VAS scale
  4. History of knee joint pain for at least 6 months
  5. Patients who are to receive an inpatient PRP injection

Exclusion Criteria:

  1. Diagnosis of secondary gonarthrosis
  2. History of inflammatory rheumatological disease or gout
  3. History of recent minor (1 month) or major (2 years) trauma to the knee joint
  4. History of knee surgery or arthroscopy
  5. Infiltrations, physiotherapy or other knee treatments in the last 3 months
  6. Diagnosis of neoplasia, hematological or immunological diseases
  7. Clinical or biological signs of acute infection
  8. Coagulation disorders

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Andet: 40 patients with knee arthrosis receiving an infiltration with plasma rich in platelets
intra-articular administration of plasma rich in platelets (PRP)
intraarticular injection

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Pain intensity
Tidsramme: Baseline and at 4 weeks
Pain intensity assessed using the Visual Analogue Scale (VAS)
Baseline and at 4 weeks
Functional status and symptom severity
Tidsramme: Basline and at 4 weeks
Functional status and symptom severity measured by the WOMAC (Western Ontario and McMaster Universities Osteoarthritis Index) questionnaire Health-related quality of life evaluated with the SF-36 questionnaire
Basline and at 4 weeks
Systemic inflammatory markers
Tidsramme: Baseline and at 4 weeks
Systemic inflammatory markers: IL-1β, IL-8, IL-18, TNF-α
Baseline and at 4 weeks
General inflammatory indicators
Tidsramme: Baseline and at 4 weeks
General inflammatory indicators: erythrocyte sedimentation rate (ESR)
Baseline and at 4 weeks
General inflammatory indicators 2
Tidsramme: Baseline and at 4 weeks
General inflammatory indicators: C-reactive protein (CRP)
Baseline and at 4 weeks
Growth factor profile of PRP
Tidsramme: Baseline
transforming growth factor beta (TGF-β), platelet-derived growth factor (PDGF), insulin-like growth factor 1 (IGF-1), and vascular endothelial growth factor (VEGF)
Baseline

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

15. oktober 2025

Primær færdiggørelse (Faktiske)

20. november 2025

Studieafslutning (Faktiske)

20. december 2025

Datoer for studieregistrering

Først indsendt

11. februar 2026

Først indsendt, der opfyldte QC-kriterier

26. april 2026

Først opslået (Faktiske)

30. april 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

30. april 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

26. april 2026

Sidst verificeret

1. april 2026

Mere information

Begreber relateret til denne undersøgelse

Plan for individuelle deltagerdata (IPD)

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UBESLUTET

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