The diagnostic value of urine heat shock protein 70 and prostatic exosomal protein in chronic prostatitis

Abstract

Objective To explore the diagnostic value of the levels of prostatic exosomal protein (PSEP) and heat shock protein 70 (HSP70) in the urine of patients with chronic prostatitis (CP). Method Urine samples from 210 CP patients (70 cases of the USA National Institutes of Health Category II [NIH‐II], 70 NIH‐IIIa, and 70 NIH‐IIIb patients) and 70 control subjects were collected between May 2018 and February 2020. The levels of PSEP and HSP70 in urine were detected by enzyme‐linked immunosorbent assay. The differences in urine PSEP and HSP70 levels between the groups were analyzed, and receiver operating characteristic (ROC) curves were used to analyze the clinical value of PSEP and HSP70 in the diagnosis of CP. Results The PSEP levels of CP patients were significantly higher than those of the control group (p < 0.001), but there was no difference in PSEP levels among CP subgroups. The level of HSP70 in the urine of the NIH‐II patients was significantly lower than the levels in the NIH‐IIIa and NIH‐IIIb subgroups and the control group, but there was no difference in HSP70 levels between the NIH‐IIIa and NIH‐IIIb subgroups and the control group. ROC curve analysis results showed that the area under the curve (AUC) of PSEP for the NIH‐II, NIH‐IIIa, and NIH‐IIIb patients was 0.751, 0.776, and 0.731, respectively. The AUC of HSP70 in NIH‐II patients was 0.784, and the AUC of combined detection of PSEP and HSP70 in NIH‐II patients was 0.858. Conclusion Urine PSEP can be used as a marker for the diagnosis of CP, but it cannot distinguish between the various types of CP, and HSP70 can be used as a diagnostic index for NIH‐II classification.

Low-Dose Gamma Radiation Fields Decrease Cell Viability, Damage DNA, and Increase the Expression of Hsp70 and p53 Proteins in Human Leukocytes

“…The results showed the presence of the Hsp70 protein in all the samples analyzed. This correlates with other authors who have shown that Hsp are constitutively and ubiquitously expressed in eukaryotic cells, where they participate in the maintenance of cell function [56] [57].…”