Bupleurum polysaccharides ameliorated renal injury in diabetic mice associated with suppression of HMGB1-TLR4 signaling.
10.1016/S1875-5364(19)30078-0
- Author:
Zhen-Zhen LIU
1
;
Hong-Bo WENG
1
;
Li-Jie ZHANG
1
;
Ling-Yu PAN
1
;
Wei SUN
1
;
Hai-Xia CHEN
1
;
Mei-Yu CHEN
1
;
Tao ZENG
2
;
Yun-Yi ZHANG
1
;
Dao-Feng CHEN
3
;
Hong LI
4
Author Information
1. Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China.
2. Clinical trial institution, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 201203, China.
3. Department of Pharmacognosy, School of Pharmacy, Fudan University, Shanghai 201203, China. Electronic address: dfchen@shmu.edu.cn.
4. Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China. Electronic address: lxzhang@shmu.edu.cn.
- Publication Type:Journal Article
- Keywords:
Bupleurum;
High-mobility group box;
Inflammation;
Polysaccharides;
Renal fibrosis;
Renal injury;
Toll-like receptor 4
- From:
Chinese Journal of Natural Medicines (English Ed.)
2019;17(9):641-649
- CountryChina
- Language:English
-
Abstract:
Bupleurum polysaccharides (BPs) is isolated from Bupleurum smithii var. parvifolium, a key traditional Chinese medicine. The study was to investigate the effects of BPs on diabetic kidney injury. After two intraperitoneal injections of streptozotozin (STZ) 100 mg·kg, renal injury in diabetic mice was induced and BPs was orally administrated at dosages of 30 and 60 mg·kg·d. The STZ injected mice developed renal function damage, renal inflammation and fibrosis known as diabetic kidney disease (DKD). BPs significantly reduced serum creatinine level and urinary albumin excretion rate, with the attenuated swelling of kidneys. BPs treatment obviously alleviated the pathological damage of renal tissue. The progression of renal injury in BPs treated mice was inhibited with less expression of type IV collagen (Col IV), fibronectin (FN) and α-smooth muscle actin (α-SMA). The inhibition of inflammation in kidney was associated with the reduced level of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6). BPs administration suppressed the over-expression of toll like receptor 4 (TLR4) and high-mobility group box 1 (HMGB1) with lowered activity of nuclear factor kappa B (NF-κB) in renal tissue of diabetic mice. Oral administration of BPs effectively prevented the development ofrenal injury in diabetic mice. This study suggested that the protection provided by BPs might affect through the interruption of HMGB1-TLR4 pathway, leading to the inhibition of renal inflammation and fibrotic process.
