Pathology, Venous Disease, and Clinical Correlations (PAVEDI)
Clinical and Pathological Correlations in Chronic Venous Disease
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
Chronic Venous Disease (CVD) of the lower limbs is a widespread chronic condition of the western world. There are several signs and symptoms that affect quality of life of patients with CVD. One of the main signs of this disease are varicose veins that are enlarged, swollen, and twisting superficial veins. Vessel wall of varicose veins shows a significant histopathological phenotype, characterized by a distortion of structural architecture: endothelial damage, disorganization of muscle bundles and alteration of the composition of the extracellular matrix (ECM). Symptoms may be different, according to disease state, progression and local inflammatory processes. To date, there is no study that correlate the type and the intensity of symptoms with histopathological phenotype.
Aim of this study is to correlate histopathological phenotype with clinical manifestations.
A cohort of patients with varicose veins scheduled for open surgical treatment that will undergo to stab avulsion of varicose veins will be recruited. Subsequently, venous tissue from stab avulsion will collected in order to evaluate the following biomarkers: VEGF (Vascular -Endothelial Growth Factor), PGP 9.5 (Protein Gene Product 9.5), Fibronectin and Matrix Metalloproteinase- 9 (MMP-9).
VEGF has a key role as a regulator of angiogenesis; its expression is highly regulated by hypoxia, in this case induced by venous hypertension. In addition to being a marker of neoangiogenesis, it increases vascular permeability in inflammatory disorders. PGP 9.5 is a marker of the innervation of the vessel wall that plays an important role in the regulation of venous tone. Fibronectin and MMP-9 are direct markers of ECM remodeling and impairment and they have also a role in chronic inflammation.
Tipo di studio
Iscrizione (Anticipato)
Contatti e Sedi
Luoghi di studio
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Catanzaro, Italia, 88100
- Reclutamento
- CIFL- Interuniversity Center of Phlebolymphology
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Catanzaro, Italia, 88100
- Reclutamento
- University Magna Graecia of Catanzaro
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Metodo di campionamento
Popolazione di studio
Descrizione
Inclusion Criteria:
- Patients with varicose veins scheduled for surgery
Exclusion Criteria:
- Peripheral artery disease
- Malignancy
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Modelli osservazionali: Coorte
- Prospettive temporali: Trasversale
Coorti e interventi
Gruppo / Coorte |
Intervento / Trattamento |
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Patients with varicose veins
Patients with varicose veins and eligible to receive open surgery (stab avulsion of varicose veins) as routinely care.
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Stab avulsion is a technique to remove varicose veins.
In this procedure, several tiny cuts (incisions) are made in the skin through which the varicosed vein is removed.
Removed varicose veins will be collected and analyzed.
Altri nomi:
Sample obtained from varicose veins of lower limbs of patients will be collected and immediately fixed in formalin.
The tissue fragments will be taken from varicose veins.
Subsequently the tissue will be embedded in paraffin and 3-to-4 mm thick sections will be prepared by a microtome.
The tissue sections will be processed for histological and immunohistochemical studies of VEGF, MM9, PGP 9.5 AND FRIBRONECTIN.
For antibodies the EnVision staining system (Dako EnVision™) will be used.
For the analysis of the positive structures detected by immunohistochemistry, a semiquantitative evaluation method will be used.
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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Expression of Matrix Metalloproteinase-9 (MMP-9)
Lasso di tempo: at 10 month
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EnVision staining system (Dako EnVision™) will be used.
A synthetic peptide from the middle region of human MMP9 will be used with dilutions 1:50 with Ethylenediaminetetraacetic acid (EDTA).
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at 10 month
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Expression of Vascular Endothelial Growth Factor (VEGF)
Lasso di tempo: at 10 month
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EnVision staining system (Dako EnVision™) will be used.
Monoclonal mouse Anti-Human vascular endothelial growth factor, code No. M7273 will be used with dilution 1:50 with Ethylenediaminetetraacetic acid (EDTA).
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at 10 month
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Expression of Fibronectin
Lasso di tempo: at 10 month
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EnVision staining system (Dako EnVision™) will be used.
A synthetic peptide made toward the C-terminal region of the human Fibronectin protein (within residues 2250-2300) will be used with dilution 1:400 citrate buffer.
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at 10 month
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Expression of Protein Gene Product 9.5 (PGP 9.5)
Lasso di tempo: at 10 month
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EnVision staining system (Dako EnVision™) will be used.
Purified PGP 9.5 isolated from bovine brain will be used with dilution 1:200 citrate buffer
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at 10 month
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Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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Correlation of the biomarkers expression with signs and symptoms
Lasso di tempo: At 11 month.
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The expression of the biomarkers that will be studied on venous tissue samples will be correlated with the type of signs and symptoms complained by the patients.
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At 11 month.
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Collaboratori e investigatori
Sponsor
Pubblicazioni e link utili
Pubblicazioni generali
- Birdina J, Pilmane M, Ligers A. The Morphofunctional Changes in the Wall of Varicose Veins. Ann Vasc Surg. 2017 Jul;42:274-284. doi: 10.1016/j.avsg.2016.10.064. Epub 2017 Mar 11.
- Kucukguven A, Khalil RA. Matrix metalloproteinases as potential targets in the venous dilation associated with varicose veins. Curr Drug Targets. 2013 Mar;14(3):287-324.
- Kolano P, Bednarski IA, Lesiak A, Skibinska M, Stasikowska-Kanicka O, Danilewicz M, Narbutt J. Overexpression of cathepsin K and vascular endothelial growth factor in chronic venous ulcerations. Postepy Dermatol Alergol. 2020 Apr;37(2):234-239. doi: 10.5114/ada.2020.94840. Epub 2020 May 6.
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Completamento primario (Anticipato)
Completamento dello studio (Anticipato)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- ER.ALL.2018.11
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