Saratov JOURNAL of Medical and Scientific Research

Kozadayev M.N.

Scientific Research Institute of Traumatology, Orthopedics and Neurosurgery of Saratov State Medical University n.a. V.I. Razumovsky, Department of Fundamental, Clinical and Experimental Studies, Junior Research Assistant, Candidate of Medical Sciences

Hemostasis test parameters in patients requiring revision knee arthroplasty

Year: 2018, volume 14 Issue: №2 Pages: 266-271
Heading: Traumatology and Orthopedics Article type: Original article
Authors: Girkalo M.V., Shakhmartova S.G., Shpinyak S.P., Mandrov A.V., Kozadaev M.N., Puchinyan D.M.
Organization:
Summary:

Objective: comparative analysis of the blood coagulation system in patients requiring revision arthroplasty of the knee joint in connection with the developed infectious and aseptic complications after total arthroplasty. Material and Methods. 37 patients with complications of total knee replacement were examined. Patients were divided into 2 groups: 1st — with signs of suppuration (n=19); 2nd — withsigns of aseptic instability of the endoprosthesis components (n=18). The control group consisted of 22 conditionally healthy people. Studied screening coagulation: activated partial thromboplastin time, prothrombin time, fbrinogen concentration, thrombin time, antithrombin III, protein C, the content of soluble fbrin-monomer complexes and D-dimers. Results. There was an increase in activated partial thromboplastin time in patients of group 2, prothrombin time — in patients of groups 1 and 2 compared with the data obtained in the control group (p<0.001). An increase in the content of soluble fbrin- monomer complexes and D-dimers was recorded in the blood plasma of patients of the 1st and 2nd groups compared to their level in the control group (p<0.001). Conclusion. The data of local coagulogram tests in patients requiring revision arthroplasty of the knee joint refect the signs of maladaptation in the hemostatic system at the preoperative stage of examination. It is worth noting the lack of information content of the screening coagulogram, as its basic tests do not refect changes in the whole system of homeostasis, the search for new informative research methods remains relevant today.

Keywords: -
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The estimation of biocompatibility of polycaprolactone matrices mineralized by vat-erite in subcutaneous implantation tests in white rats

Year: 2018, volume 14 Issue: №3 Pages: 451-456
Heading: Physiology and Pathophysiology Article type: Original article
Authors: Ivanov A.N., Kurtukova М.О., Kozadaev M.N., Tyapkina D.A., Kustodov S.V., Saveleva M.S., Bugaeva I.O., Parakhonsky B.V., Galashina E.A., Gladkova E.V., Norkin I.A.
Organization: Saratov National Research University n.a. N. G. Chernyshevsky
Summary:

Aim: to estimate biocompatibility of matrices produced from polycaprolactone (PCL) and mineralized by vaterite (CaC03) by studying local and systemic manifestations of inflammatory reaction in subcutaneous implantation tests in white rats. Material and Methods. The experiment was conducted on 40 rats divided into four equal groups: control, comparison (rats with imitation of implantation), negative control (rats with implanted non-biocompatible matrices) and experimental group, comprised of animals with implanted PCL/CaC03-matrices. Local inflammatory manifestations were analyzed by morphological assay of implantation area tissues. Systemic inflammatory manifestations were estimated by TNF-a concentration and interleukin-lp (IL-1) in blood serum by ELISA. Results. The changes in cellular population content demonstrate that a PCL/CaC03-matriceonthe21 day after the implantation to rats is evenly colonizing by fibroblast cells and vascularizing. This type of matrices does not provoke intense inflammatory reaction seen in negative control animals and accompanied by systemic manifestations such as statistically significant rise in TNF-a and IL-1 concentrations. Conclusion. The data obtained in the study proving the biocompatibility of PLC/CaC03-scaffolds experimentally substantiate the potential for their use in tissue engineering.

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