- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT07802106
Systemic Biochemical Signature and Functional Quality Index of Calcaneal Bone Marrow Aspirate in Adults Undergoing Foot or Ankle Surgery (IQF-BMA)
Systemic Biochemical Signature in Adults Undergoing Foot or Ankle Surgery: Integrating Routine Laboratory Markers to Assess the Functional Quality of Calcaneal Bone Marrow Aspirate Mesenchymal Stem Cells in a Prospective Cohort
This observational prospective cohort study will evaluate whether routine blood tests are associated with the functional quality of calcaneal bone marrow aspirate mesenchymal stem cells in adults undergoing clinically indicated foot or ankle surgery at a university hospital in Brazil. Participants aged 40 to 80 years, with or without comorbidities, including type 2 diabetes mellitus and, when present, active Wagner grade 2-4 diabetic foot ulcers, will be eligible for inclusion.
Before surgery, participants will undergo routine blood tests, including complete blood count, glucose and lipid profile, mineral-renal markers, and tissue damage markers. During the clinically indicated surgery, calcaneal bone marrow aspirate will be collected from the same operative field. Mesenchymal stem cells will be isolated and evaluated in the laboratory for clonogenic capacity, osteogenic and adipogenic differentiation, cellular senescence, and secretion of inflammatory and anti-inflammatory cytokines.
A composite Functional Quality Index of Bone Marrow Aspirate (IQF-BMA) will be constructed from routine laboratory markers to characterize inflammatory, metabolic, mineral-renal, and tissue-damage burden. The primary objective is to examine the association between the IQF-BMA and mesenchymal stem cell functional outcomes, particularly clonogenic capacity. This exploratory study will not be used to guide individual treatment decisions.
Aperçu de l'étude
Statut
Description détaillée
This is a single-center, observational, prospective cohort study conducted at a university hospital in Brazil. The study will enroll 40 adults aged 40 to 80 years who are undergoing clinically indicated foot or ankle surgery. Participants may present with or without comorbidities, including type 2 diabetes mellitus and, when present, active Wagner grade 2-4 diabetic foot ulcers. These clinical characteristics will be recorded as observational variables and will not define intervention assignments or separate study arms. All participants will provide written informed consent before any study procedures.
Before surgery, participants will undergo a panel of routine laboratory tests covering four domains: inflammatory burden, including complete blood count, derived inflammatory indices, and albumin; glycometabolic burden, including fasting glucose, oral glucose tolerance test when clinically feasible, HbA1c, triglycerides, and cholesterol profile; mineral-renal burden, including creatinine, urea, ionized calcium, phosphorus, magnesium, alkaline phosphatase, parathyroid hormone, and 25-OH vitamin D; and tissue-energetic damage, including lactate dehydrogenase, AST, and ALT.
During the clinically indicated orthopedic surgery, calcaneal bone marrow aspirate will be collected from the same operative field. Mesenchymal stem cells will be isolated, cultured, and evaluated using standardized functional assays, including clonogenic capacity, osteogenic differentiation, adipogenic differentiation, cellular senescence, cytokine secretion, and cellular viability.
The Functional Quality Index of Bone Marrow Aspirate (IQF-BMA) will be constructed from standardized routine laboratory variables representing inflammatory, glycometabolic, mineral-renal, and tissue-energetic domains. The primary analysis will examine the association between the IQF-BMA and the clonogenic capacity of calcaneal bone marrow mesenchymal stem cells. Secondary analyses will examine associations between laboratory markers or the composite index and other cellular functional outcomes. Results will be reported primarily as effect estimates and 95% confidence intervals to support the planning of future, larger studies.
Type d'étude
Inscription (Estimé)
Contacts et emplacements
Coordonnées de l'étude
- Nom: Leonardo H Dalcheco Messias, PhD
- Numéro de téléphone: +5519998118989
- E-mail: leonardo.messias@usf.edu.br
Sauvegarde des contacts de l'étude
- Nom: Leonardo H Dalcheco Messias, PhD
- Numéro de téléphone: 19998118989
- E-mail: leonardo.messias@usf.edu.br
Lieux d'étude
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São Paulo
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Bragança Paulista, São Paulo, Brésil, 12916900
- Leonardo H Dalcheco Messias
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Contact:
- Leonardo Dalcheco Messias
- Numéro de téléphone: 19998118989
- E-mail: leonardo.messias@usf.edu.br
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria
- Age 40 to 80 years.
- Scheduled for clinically indicated foot or ankle surgery at the participating university hospital.
- Ability to understand the study procedures and provide written informed consent.
- Willingness to provide preoperative blood samples and intraoperative calcaneal bone marrow aspirate according to the study protocol.
- Participants may have comorbidities, including type 2 diabetes mellitus and, when present, active Wagner grade 2-4 diabetic foot ulcers. These clinical characteristics will be recorded for observational analyses and do not define separate study groups.
Exclusion Criteria
- Critical limb ischemia without revascularization options or hemodynamic instability.
- Active systemic infection or sepsis at the time of enrollment.
- End-stage renal disease requiring dialysis.
- Current use of high-dose systemic corticosteroids or other immunosuppressive drugs.
- Current or recent malignancy within the last 5 years, except adequately treated non-melanoma skin cancer.
- Significant cognitive impairment or psychiatric condition that, in the opinion of the investigator, precludes informed consent or adherence to study procedures.
- Pregnancy or breastfeeding.
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
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Foot/Ankle Surgery Cohort
Adults undergoing clinically indicated foot or ankle surgery at a university hospital in Brazil, with or without comorbidities, including type 2 diabetes mellitus and, when present, active Wagner grade 2-4 diabetic foot ulcers.
Blood samples and calcaneal bone marrow aspirate will be collected for systemic laboratory tests and mesenchymal stem cell functional assays.
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Clonogenic capacity of calcaneal bone marrow mesenchymal stem cells (CFU-F)
Délai: Up to 14 days after bone marrow aspirate collection.
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Number of colony-forming unit fibroblasts (CFU-F) per milliliter of calcaneal bone marrow aspirate, quantified in primary culture under standardized conditions.
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Up to 14 days after bone marrow aspirate collection.
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Osteogenic and adipogenic differentiation of mesenchymal stem cells
Délai: Up to 28 days after bone marrow aspirate collection.
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Osteogenic and adipogenic differentiation capacity of calcaneal bone marrow mesenchymal stem cells, assessed by alkaline phosphatase activity and semi-quantitative scoring of Alizarin Red and Oil Red O staining.
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Up to 28 days after bone marrow aspirate collection.
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Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: Vanessa Bertolucci, PhD Candidate, Universidade Sao Francisco
Publications et liens utiles
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Estimé)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
- Maladies du système endocrinien
- Maladies vasculaires
- Maladies cardiovasculaires
- Processus pathologiques
- Maladies métaboliques
- Troubles du métabolisme du glucose
- Diabète sucré
- Angiopathies diabétiques
- Complications du diabète
- Maladies de la peau
- Ulcère de la peau
- Ulcère de jambe
- Neuropathies diabétiques
- Ulcère du pied
- Conditions pathologiques, signes et symptômes
- Maladies nutritionnelles et métaboliques
- Maladies de la peau et du tissu conjonctif
- Diabète sucré, Type 2
- Inflammation
- Pied diabétique
Autres numéros d'identification d'étude
- USF-IQF-BMA-DFU-001
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
Informations sur les médicaments et les dispositifs, documents d'étude
Étudie un produit pharmaceutique réglementé par la FDA américaine
Étudie un produit d'appareil réglementé par la FDA américaine
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