INDIRECT REVASCULARIZATION IN DIABETIC MICROANGIOPATHY – FROM EXPERIMENTAL MODELS TO CLINICAL USE

  • R. S. Vastyanov ODESA NATIONAL MEDICAL UNIVERSITY
  • O. V. Chekhlova ODESA NATIONAL MEDICAL UNIVERSITY
  • M. V. Chekhlov ODESA NATIONAL MEDICAL UNIVERSITY
Keywords: diabetes mellitus, diabetic angiopathy, pentoxifylline, platelet-rich plasma, indirect revascularization, streptozocin, experimental model

Abstract

Introduction. Indirect revascularization in diabetic microangiopathy is considered as a promising direction for the treatment and prevention of complications of diabetes, but the theoretical background of this approach is insufficiently elaborated.

The aim of the study – to evaluate the effectiveness of combined indirect revascularization in rats with microangiopathy of the extremities on the background of experimental streptozocin diabetes.

Research Methods. Experimental studies were carried out in a chronic experiment on 100 Wistar rats wei­ghing 180–250 g. After administration of streptozocin, animals with increased resistance to pancreatotropic toxicity were excluded from the experiment according to the criterion of the absence of hyperglycemia, after which they were bred for 6 weeks 2 animals for morphological studies. At week 7, another 10 animals were removed from the experiment to evaluate the effectiveness of the experimental model. Three experimental groups were formed from the remai­ning animals (n = 60). Group I (control) – rats with streptozotocin-induced angiopathy without treatment (n=10); group 2 – rats with streptozotocin-induced angiopathy, were given pentoxifylline (100 mg/kg ip for 10 days) for therapeutic purposes (n=25); group 3 – rats with streptozotocin-induced angiopathy, which together with the treatment were injected with platelet-rich plasma (in the right hind limb, once, with a volume of 0.2 ml, linearly, retrograde, from two points) and pentoxifylline (100 mg/kg intraperitoneally within 10 days) (n=25). 4 weeks after the start of the experimental therapy, 5 animals were removed from the experiment. The duration of the experiment was 110 days.

Results and Discussion. It was shown that in experimental streptozocin diabetes at 8 weeks in animals, micro­angiopathy of the extremities develops. It is proved that the isolated administration of pentoxifylline in the terms of revascularizing activity is inferior to combination therapy. Combined therapy with pentoxifylline and plasmofilling leads to a decrease in perivascular edema and an increase in effective vascular volume mainly due to a decrease in the intensity of inflammatory manifestations.

Conclusion. The feasibility of the clinical use of a combination of pentoxifylline and plasma enriched with platelets in the treatment of manifestations of diabetic microangiopathy as a means of indirect revascularization is discussed.

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Published
2020-04-30
How to Cite
Vastyanov, R. S., Chekhlova, O. V., & Chekhlov, M. V. (2020). INDIRECT REVASCULARIZATION IN DIABETIC MICROANGIOPATHY – FROM EXPERIMENTAL MODELS TO CLINICAL USE. Medical and Clinical Chemistry, (1), 64-72. https://doi.org/10.11603/mcch.2410-681X.2020.v.i1.11058
Section
ORIGINAL INVESTIGATIONS