Comprehensive study of dexamethasone on albumin biogenesis during normal and pathological renal conditions. (1st January 2020)

• Record Type: Journal Article
• Authors: Gong, Qin; Yin, Jilei; Wang, Mulan; He, Luling; Lei, Fan; Luo, Yingying; Yang, Shilin; Feng, Yulin; Li, Jun; Du, Lijun
• Is Part Of: Pharmaceutical biology. Volume 58:Number 1(2020)
• Page Start: 1261
• Page End: 1271
• Publication Date: 2020-01-01
• Subjects: Cisplatin -- acute kidney injury -- proteinuria -- gene transcription start site; Pharmacognosy -- Periodicals; Materia medica, Vegetable -- Periodicals; 615.321
• DOI: 10.1080/13880209.2020.1855214
• Languages: English
• ISSNs: 1388-0209

Abstract

Abstract: Context: Dexamethasone (DXM) has an anti-immunoinflammatory effect, and is often used in acute kidney injury (AKI). However, the effects of DXM on albumin (ALB) have not been fully studied. Objective: To investigate the effects of DXM on ALB production and renal function. Materials and methods: Male Wistar rats were divided into normal and DXM groups (0.25, 0.5, 1 mg/kg for 5 days) ( n = 15) for a dose-dependent study. Rats were divided into normal group and DXM groups (0.5 mg/kg for 3, 5, 7 days) ( n = 9) for a time-dependent study. In AKI experiment, rats were divided into normal (saline), cisplatin (CP, 5 mg/kg, i.v.), CP + DXM groups (0.25, 0.5 and 1 mg/kg, i.m.) ( n = 16). The blood and the organs were isolated for analysis. Results: In normal, serum ALB (sALB) and serum total protein (sTP) increased in DXM group with sALB increased 19.8–32.2% (from small to large dosages); and 30.2–32.5.6% (from 3 to 7 days of DXM); sTP 15.7–22.6% and 14.2–24.3%; urine ALB (uALB) 31.5–392.3%, and 1047.2–1390.8%; urine TP (uTP) 0.68–173.1% and 98.0–504.9%, compared with normal groups. DXM increased the mRNA expression of Cebp and Hnf, suppressing podocin. In AKI, DXM decreased serum BUN (53.7%), serum Cre (73.4%), sALB (30.0%), sTP (18.7%), uALB (74.5%), uTP (449.3%), rescuing the suppressed podocin in kidney. Conclusions: DXM acts on Cebp and Hnf and promotes ALB production. This finding helps to evaluate the rationale of DXM for kidney injury.