Saratov JOURNAL of Medical and Scientific Research

biomolecular markers

Biomarkers of renal damage and immunohistochemical detection of oncogenesis in the surgical treatment of renal cell carcinoma

Year: 2018, volume 14 Issue: №3 Pages: 420-426
Heading: Urology Article type: Original article
Authors: Tarasenko A.l., Rossolovsky A.N., Berezinets O.L., Ponukalin A.N., Medvedeva A.M., Zakharova N.B., Popkov V.M., Maslyakova G.N.
Organization: Saratov State Medical University, I.M. Sechenov First Moscow State Medical University
Summary:

Objective: to assess the possibility of using markers of renal injury and carcinogenesis as additional criteria for the choice of the method of surgical treatment of RCC and to minimize the risk of development and progression of kidney injury. Material and Methods. 60 patients with morphologically confirmed RCC T1-3M0N0 operated on in the volume of open nephrectomy or laparoscopic nephrectomy or laparoscopic resection and the kidney were examined. Patients were divided into 3 groups: group 1: patients after nephrectomy performed for kidney cancer using traditional surgical technique, group 2: patients after laparoscopic nephrectomy and group 3: after laparoscopic resection of kidney tumor. Before surgical operation, on the 5-7 day and after 1 month, all patients were examined by concentrations of urinary excreted lipocalin 2 (NGAL), and serum concentrations of IL-18, MMP-9 and IGF-1. Renal function was estimated using the calculated GFR equation (CKD-EPI 2009) based on serum creatinine level. Immunohistochemical study of histological preparations of distant tumors on proliferation antibodies (Ki-67, PCNA), apoptosis (BAX, Bcl-2) was performed. Differences in clinical data and clinical variables were compared using Spearman rank correlations and t-test. Results. The studied indices of renal damage of IL-18, NGAL, MMP-9 and IGF-1 both in the early (5-7 days) and later (1 month) postoperative period showed a correlation between the surgical intervention method and the degree of tumor cell differentiation. Conclusion. The levels of biomolecular markers of renal damage (IL-18, NGAL, MMP-9 and IGF-1) correlate with the degree of differentiation in thetumoral cells and functional activity of the remaining renal parenchyma in the postoperative period, but also depend on the individual characteristics of the patient's body. A certain level of expression of MMP-9 and IL-18 with a small tumor size can be a guide to determine the indications for the choice of organ-preserving surgery in patients.

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Biomolecular assessment of renal function in various types of surgical treatment of renal cell carcinoma

Year: 2017, volume 13 Issue: №1 Pages: 73-77
Heading: Traumatology and Orthopedics Article type: Original article
Authors: Popkov V.M., Tarasenko A.l., Maslyakova G.N., Rossolovsky A.N., Zakharova N.B., Berezinets O.L., Lomakin D.V.
Organization: First Moscow State Medical University n.a. I.M. Sechenov, Saratov State Medical University
Summary:

Objective: to assess the possibility of using the markers of acute kidney injury to predict the preoperative risk for the subsequent decline in glomerular filtration rate in different types of surgical treatment of renal cell carcinoma (RCC). Material and methods. 60 patients with histologically confirmed RCC T1-3M0N0 operated in the clinic of urology of Saratov State Medical University n.a. V. I. Razumovsky in the volume of nephrectomy or partial nephrectomy. Before surgery all patients underwent standard examination intended for patients with kidney tumors: ultrasound, MRI, excretory urography and dynamic renoscintigraphy, the perioperative values of serum creatinine and glomerular filtration rate were determined. Using the method of immuno-enzymatic analysis the concentrations of excreted with the urine NGAL and IL-18 in serum samples at the preoperative stage, after 5 days and after 1 month of postoperative follow-up were investigated. Differences in clinical data and clinical variables were compared by using Spearman rank correlations and t-test. Results. The determined parameters of acute kidney injury markers IL-18 and NGAL in the early postoperative period were increased in patients after open nephrectomy. Moreover, the correlation analysis according to the Spearman method revealed a strong significant correlation between the preoperative levels of IL-18 and GFR after surgery (r=1; p<0.05). Conclusion. Laparoscopic resection of RCC is the method of choice for surgical treatment of RCC. As a predictor of adverse prognosis, the level of IL-18 in serum may be used. Its increase correlates with a decline in renal function in the postoperative period, and according to some reports, IL-18 also is an independent predictor of adverse prognosis in patients with a localized RCC.

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