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Gál K, Asbóth G, Vass M, Bíró A, Markovich A, Homoki J, Fidler G, Paholcsek M, Cziáky Z, Németh N, Remenyik J, Soltész P. Monitoring and recovery of hyperglycaemia-induced endothelial dysfunction with rheopheresis in diabetic lower extremity ulceration with hyperviscosity. Diab Vasc Dis Res 2022; 19:14791641221131788. [PMID: 36357361 PMCID: PMC9661626 DOI: 10.1177/14791641221131788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIMS Rheopheresis is an extracorporeal haematotherapy that improves haemorheological status by filtering proteins that enhance blood viscosity. It also has anti-inflammatory effects by removing inflammatory cytokines. Our study aims to examine the effects of rheopheresis on the endothelial status in diabetic lower extremity ulceration. METHODS In vitro experiments were performed in a HUVEC model to mimic hyperglycaemic stress. We determined the changes in gene expression levels of IL-6, IL-8, TNF-alpha, endothelin convertase enzyme, ET-1, and NO synthase, as well as the ROS and intracellular GSH levels upon hyperglycaemia. In in vivo studies, two rheopheresis procedures were performed on seven patients with diabetic lower extremity ulceration with hyperviscosity, and we measured the changes in plasma concentrations of ET-1, TXB2, SOD enzyme activity, and extracellular components of the glutathione pool depending on treatments. RESULTS Our results showed that hyperglycaemia increases endothelial expression of inflammatory cytokines, ET-1, and endothelin convertase enzyme, while NO synthase was decreased. As a result of rheopheresis, we observed decreased ET-1 and TXB2 concentrations in the plasma and beneficial changes in the parameters of the glutathione pool. CONCLUSION To summarize our results, hyperglycaemia-induced oxidative stress and endothelial inflammation can be moderated by rheopheresis in diabetic lower extremity ulceration with hyperviscosity.
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Affiliation(s)
- Kristóf Gál
- Division of Angiology, Department of Internal Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Georgina Asbóth
- Department of Food Technology, Faculty of Agricultural and Food Sciences and Environmental Management University of Debrecen, Debrecen, Hungary
| | - Melinda Vass
- Division of Angiology, Department of Internal Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Attila Bíró
- Department of Food Technology, Faculty of Agricultural and Food Sciences and Environmental Management University of Debrecen, Debrecen, Hungary
| | - Arnold Markovich
- Department of Food Technology, Faculty of Agricultural and Food Sciences and Environmental Management University of Debrecen, Debrecen, Hungary
| | - Judit Homoki
- Department of Food Technology, Faculty of Agricultural and Food Sciences and Environmental Management University of Debrecen, Debrecen, Hungary
| | - Gábor Fidler
- Department of Food Technology, Faculty of Agricultural and Food Sciences and Environmental Management University of Debrecen, Debrecen, Hungary
| | - Melinda Paholcsek
- Department of Food Technology, Faculty of Agricultural and Food Sciences and Environmental Management University of Debrecen, Debrecen, Hungary
| | - Zoltán Cziáky
- Agricultural and Molecular Research and Service Group, University of Nyíregyháza, Nyíregyháza, Hungary
| | - Norbert Németh
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Judit Remenyik
- Department of Food Technology, Faculty of Agricultural and Food Sciences and Environmental Management University of Debrecen, Debrecen, Hungary
| | - Pál Soltész
- Division of Angiology, Department of Internal Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- Pál Soltész, Division of Angiology, Department of Internal Medicine, Faculty of Medicine, University of Debrecen, Móricz Zsigmond krt. 22, Debrecen 4032, Hungary.
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Abstract
The original definition of Eisenmenger syndrome refers to an unrestrictive post-tricuspid valve congenital systemic-to-pulmonary shunt. When the pulmonary arterial systolic pressure becomes equal to the systemic arterial systolic pressure, the direction of the shunt becomes pulmonary-to-systemic. The latter leads to progressive cyanosis, and exercise intolerance is initially proportional to the degree of hypoxaemia. Later, congestive heart failure may occur . The management principle is to avoid any factors that destabilise this delicately balanced physiology. Until recently, this could only be achieved by symptomatic therapy; however, when patients are severely incapacitated, transplantation is needed. At present, new drugs, which are more selective pulmonary vasodilators, are available to interfere with the ongoing disease process to improve functional capacity and delay the decision for transplantation.
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Affiliation(s)
- Werner Budts
- Department of Cardiology, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium.
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Limsuwan A, Platoshyn O, Yu Y, Rubin LJ, Rothman A, Yuan JX. Inhibition of K(+) channel activity in human pulmonary artery smooth muscle cells by serum from patients with pulmonary hypertension secondary to congenital heart disease. Pediatr Res 2001; 50:23-8. [PMID: 11420414 DOI: 10.1203/00006450-200107000-00007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Activity of K(+) channels regulates cytosolic free Ca(2+) concentration by controlling membrane potential. A rise in cytosolic free Ca(2+) concentration in pulmonary artery smooth muscle cells (PASMC) triggers pulmonary vasoconstriction and stimulates PASMC proliferation. Whether serum from children with pulmonary hypertension (PH) secondary to congenital cardiopulmonary diseases contains a factor(s) that inhibits K(+) channel function in PASMC was investigated using patch clamp techniques. PASMC isolated from normal subjects were cultured in media containing 5% serum from normotensive (NPH) or PH patients. Cell growth rate and the currents through voltage-gated K(+) channels were determined and compared between the cells treated with serum from NPH and PH patients. In the absence of growth factors, incubation of PASMC in media containing NPH serum for 48 h increased cell numbers by 2.5-fold, whereas incubation of the cells in media containing PH serum increased cell numbers by 4.5-fold (p < 0.001). Amplitude of whole-cell voltage-gated K(+) currents in NPH serum-treated cells (1119 +/- 222 pA at +80 mV, n = 43) was 3.5-fold greater than in PH serum-treated cells (323 +/- 34 pA, n = 43, p < 0.001). Consistently, membrane potential was much more depolarized in PASMC treated with PH serum (-28 +/- 2 mV, n = 29) than cells treated with NPH-serum (-47 +/- 2 mV, n = 28; p < 0.001). These results suggest that a circulating mitogenic agonist, which induces membrane depolarization by inhibiting voltage-gated K(+) channel activity in PASMC, may be produced or up-regulated in pediatric patients with secondary PH.
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Affiliation(s)
- A Limsuwan
- Division of Pulmonary and Critical Care Medicine, University of California School of Medicine, San Diego, California 92103-8382, USA
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