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.
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Detaillierte Beschreibung
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.
Studientyp
Studientyp
Einschreibung (Geschätzt)
Einschreibung
Kontakte und Standorte
Studienkontakt
Studienkontakt
- Name: Leonardo H Dalcheco Messias, PhD
- Telefonnummer: +5519998118989
- E-Mail: leonardo.messias@usf.edu.br
Studieren Sie die Kontaktsicherung
- Name: Leonardo H Dalcheco Messias, PhD
- Telefonnummer: 19998118989
- E-Mail: leonardo.messias@usf.edu.br
Studienorte
-
-
São Paulo
-
Bragança Paulista, São Paulo, Brasilien, 12916900
- Leonardo H Dalcheco Messias
-
Kontakt:
- Leonardo Dalcheco Messias
- Telefonnummer: 19998118989
- E-Mail: leonardo.messias@usf.edu.br
-
-
Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
- Erwachsene
- Älterer Erwachsener
Akzeptiert gesunde Freiwillige
Probenahmeverfahren
Studienpopulation
Beschreibung
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.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
Anzahl der Gruppen / Kohorten
Kohorten und Interventionen
Gruppe / KohorteGruppe / Kohorte |
|---|
|
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.
|
Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Clonogenic capacity of calcaneal bone marrow mesenchymal stem cells (CFU-F)
Zeitfenster: Up to 14 days after bone marrow aspirate collection.
|
Number of colony-forming unit fibroblasts (CFU-F) per milliliter of calcaneal bone marrow aspirate, quantified in primary culture under standardized conditions.
|
Up to 14 days after bone marrow aspirate collection.
|
Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Osteogenic and adipogenic differentiation of mesenchymal stem cells
Zeitfenster: Up to 28 days after bone marrow aspirate collection.
|
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.
|
Up to 28 days after bone marrow aspirate collection.
|
Mitarbeiter und Ermittler
Sponsor
Sponsor
Ermittler
Ermittler
- Hauptermittler: Vanessa Bertolucci, PhD Candidate, Universidade Sao Francisco
Publikationen und hilfreiche Links
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Geschätzt)
Studienbeginn
Primärer Abschluss (Geschätzt)
Primärer Abschluss
Studienabschluss (Geschätzt)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Erkrankungen des endokrinen Systems
- Gefäßerkrankungen
- Herz-Kreislauf-Erkrankungen
- Pathologische Prozesse
- Stoffwechselerkrankungen
- Störungen des Glukosestoffwechsels
- Diabetes Mellitus
- Diabetische Angiopathien
- Diabetes-Komplikationen
- Hautkrankheiten
- Hautgeschwür
- Beingeschwür
- Diabetische Neuropathien
- Fußgeschwür
- Pathologische Zustände, Anzeichen und Symptome
- Ernährungs- und Stoffwechselerkrankungen
- Haut- und Bindegewebserkrankungen
- Diabetes mellitus, Typ 2
- Entzündung
- Diabetischer Fuß
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- USF-IQF-BMA-DFU-001
Plan für individuelle Teilnehmerdaten (IPD)
Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?
Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .