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The effects of sulodexide on both clinical and molecular parameters in patients with mixed arterial and venous ulcers of lower limbs

Authors Serra R, Gallelli L, Conti A, De Caridi G, Massara M, Spinelli F, Buffone G, Caliò FG, Amato B, Ceglia S, Spaziano G, Scaramuzzino L, Ferrarese AG, Grande R, de Franciscis S

Received 2 February 2014

Accepted for publication 6 March 2014

Published 13 May 2014 Volume 2014:8 Pages 519—527

DOI https://doi.org/10.2147/DDDT.S61770

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Raffaele Serra,1,2,* Luca Gallelli,3,* Angela Conti,1 Giovanni De Caridi,4 Mafalda Massara,4 Francesco Spinelli,4 Gianluca Buffone,1 Francesco Giuseppe Caliò,5 Bruno Amato,6 Simona Ceglia,7 Giuseppe Spaziano,8 Luca Scaramuzzino,9 Alessia Giovanna Ferrarese,10 Raffaele Grande,1 Stefano de Franciscis1,2

1Interuniversity Center of Phlebolymphology (CIFL), International Research and Educational Program in Clinical and Experimental Biotechnology, University Magna Graecia of Catanzaro, Catanzaro, Italy; 2Department of Medical and Surgical Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy; 3Department of Health Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy; 4Cardiovascular and Thoracic Department, University of Messina, Messina, Italy; 5Unit of Vascular Surgery, S Anna Hospital, Catanzaro, Italy; 6Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy; 7Department of Experimental and Clinical Medicine, University Magna Graecia of Catanzaro, Catanzaro, Italy; 8Department of Experimental Medicine, Second University of Naples, Naples, Italy; 9University Campus BioMedico of Rome, Rome, Italy; 10Department of General Surgery, University of Turin, Turin, Italy

*These authors contributed equally to this work

Background: Mixed venous and arterial ulcers account for approximately 15%–30% of all venous leg ulcerations. Several studies have shown that matrix metalloproteinases (MMPs) and neutrophil gelatinase-associated lipocalin (NGAL) play a central role in the pathophysiology of venous and arterial diseases. Some studies have shown the efficacy of glycosaminoglycans, such as sulodexide (SDX), in treating patients with leg ulcers. The aim of this study was to evaluate clinical effects of SDX and its correlation with MMPs and NGAL expression in patients with mixed arterial and venous leg ulcers.
Methods: Patients eligible for this study were of both sexes, older than 20 years, and with a clinical and instrumental diagnosis of mixed ulcer.
Results: Fifty-three patients of both sexes were enrolled and divided into two groups by means of randomization tables. Group A (treated group) comprised 18 females and ten males (median age: 68.7 years) treated with standard treatment (compression therapy and surgery) + SDX (600 lipoprotein lipase-releasing units/day intramuscularly) for 15 days followed by SDX 250 lipase-releasing units every 12 hours day orally for 6 months as adjunctive treatment. Group B (control group) comprised 17 females and eight males (median age: 64.2 years) treated with standard treatment only (compression therapy and surgery). The type of surgery was chosen according to anatomical level of vein incompetence: superficial venous open surgery and/or subfascial endoscopic perforating surgery. In all enrolled patients, blood samples were collected in order to evaluate the plasma levels of MMPs and NGAL through enzyme-linked immunosorbent assay. These results were compared to another control group (Group C) of healthy individuals. Moreover, biopsies of ulcers were taken to evaluate the tissue expression of MMPs and NGAL through Western blot analysis. Our results revealed that SDX treatment is able to reduce both plasma levels and tissue expression of MMPs improving the clinical conditions in patients with mixed ulcers.
Conclusion: Inhibition of MMPs could represent a possible therapeutic intervention to limit the progression of leg ulceration. In particular, our findings demonstrate the efficacy of SDX in patients with mixed arterial and venous chronic ulcers of the lower limbs.

Keywords:
mixed ulcer, arterial ulcer, metalloproteinases, neutrophil gelatinase-associated lipocalin


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