Persistent Pain in Pharmacologically or Surgical Treated Osteoarthritis: Role of Mu-Limpho Marker
RecruitingNCT06637709
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This study has no listed site in Canada in this snapshot. It is included as part of the worldwide chronic pain corpus.
Brief summary (from the registry)
The goal of this prospective observational study is to analyze the percentage of expression of B and NK cells expressing Mu opioid receptor on their surface, named Mu-Lympho-Marker (MLM), to measure pain progression in Osteoarthritis patients and its association with specific rehabilitation programs. In particular, we want to analyze the role of MLM as diagnostic biomarker of pain chronicization. The main aims are: * to explore the relationship between Mu+ B and NK cells percentage and pain progression in OA patients, also investigating whether this characteristic is associated to particular outcome of pharmacological and/or surgery interventions and rehabilitation * to characterize Mu+ B and NK cells in terms of maturation states, activation/inhibition and functional properties, as well as their ability to respond to Mu stimulation, in order to understand whether these cells can have a role in the pathogenesis of OA associated CP * to investigate the potential confounding effect of other biological and psychological elements in the relationship between the MLM and OA pain progression Researchers will compare two study groups: 1. Experimental group: subjects suffering from symptomatic knee OA. 1S)surgical subgroup: OA patients from the experimental group requiring primary TKA due to the failure of conservative treatment, thus undergoing surgical intervention; 2. Control group: subjects without any chronic pain, undergoing occupational health surveillance matched by age, sex and psychological profile with the experimental group patients Participants will be asked to do blood sample collections at specific time points to evaluate MLM stability over time and its modulation according to pharmacological/surgical and rehabilitation interventions. Subjects in the control group will undergo 2 blood sample collections. Pain assessment will be performed at all scheduled time points to correlate pain severity with Mu expression in B and NK cells.
Study details
- Official title
- Persistent Pain in Pharmacologically or Surgical Treated Osteoarthritis: the Role of the Mu-Lympho Marker As a Candidate Innovative Diagnostic Tool
- Conditions
- Sponsor
- IRCCS San Raffaele Roma
- Start date
- 2023-11-07
- Primary completion
- 2025-06-30
- Sex
- All
- Age range
- from 18 Years to 99 Years
- Healthy volunteers
- true
- Results posted
- No results posted in this snapshot
- Countries
- Italy
- Total sites listed
- 1
Eligibility criteria
Show eligibility criteria (verbatim from the registry)
Inclusion Criteria: * primary osteoarthritis with disabling pain, age older than 18 years at the time of surgery, capability tocommunicate with healthcare professionals and give valid informed consent, and a willingness to participate in a 24-month follow-up. Exclusion Criteria: * (1) patients who underwent: surgical knee joint procedures; intra-articular knee injection in the last 3 months; (2) patients with: severe psychiatric disorder \[excluding mild depression\] or mental/cognitive impairment; a history \[in the last 3 months\] of fracture or trauma; (3) patients with a history in the last 6 months or currently suffering from: immunodeficiency diseases; connective tissue disease; infections; (4) pregnancy (5) patients ongoing opioids.
Source: ClinicalTrials.gov (US National Library of Medicine), snapshot October 2026. Check the registry for current recruiting status. Record: https://clinicaltrials.gov/study/NCT06637709