Archivos espanoles de urologia · 2025
Experimental Mechanism of Triptolide Delaying Glomerulosclerosis in Chronic Kidney Disease.
СтатьяНазвание и аннотация: Перевод в очереди
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Deng Zhidan, Chai Lijuan, Wang Jingjing, Wang Fei, Jiang Jian, Zhang Wenjuan
Аннотация
OBJECTIVE: To explore the impact of Tripterygium wilfordii glycosides (TWG) on glomerulosclerosis within a rat model of chronic kidney disease (CKD), as well as the role of the transforming growth factor-β1 (TGF-β1)/Smad signaling pathway in this mechanism.
METHODS: Twenty-four clean Sprague-Dawley rats were divided into Sham group (n = 8), model group (n = 8) and TWG group (n = 8). Adriamycin nephropathy (ADRN) rat model was established by jugular vein injection of adriamycin (ADR). TWG rats were given TWG 50 mg/kg intragastrically once a day for 6 weeks. After 10 weeks, the ratio of total cell number to glomerulus, extracellular matrix (ECM) and collagen (Coll) deposition, a-smooth muscle actin (a-SMA), type I collagen (Col1) expression, TGF-β1, p-Smad2/3mRNA expression and TGF-β1, p-Smad2/3 protein expression were compared in each group.
RESULTS: Masson staining revealed that in the model group, there was an increase in glomerular fibrosis, a heightened deposition of collagen fibers, and an expansion of interstitial spaces; Conversely, in the electroacupuncture group, the deposition of glomerular collagen fibers diminished. The intensity of a-SMA and ColI immunofluorescence staining in the kidney tissue of rats from the model group was markedly higher than that observed in the Sham group (p < 0.0001, < 0.0001 respectively). In contrast, the a-SMA and ColI immunofluorescence staining intensity in the TWG group was reduced compared to the model group (p = 0.009, 0.016 respectively). Furthermore, the expression levels of TGF-β1 and Smad3 messenger RNA (mRNA) in the kidney tissue of rats in the TWG group were lower than those in the model group (p = 0.013, 0.008, respectively), while the Smad7 mRNA was elevated compared to the model group (p = 0.019, 0.011, respectively). Additionally, the protein expression levels of TGF-β1 and p-Smad2/3 in the kidney tissue of rats in the TWG group were diminished compared to those in the model group (p < 0.0001, 0.006 respectively).
CONCLUSIONS: TWG can improve glomerulosclerosis and delay its progression, which may be achieved by down-regulating TGF-β1/Smad signal pathway.
METHODS: Twenty-four clean Sprague-Dawley rats were divided into Sham group (n = 8), model group (n = 8) and TWG group (n = 8). Adriamycin nephropathy (ADRN) rat model was established by jugular vein injection of adriamycin (ADR). TWG rats were given TWG 50 mg/kg intragastrically once a day for 6 weeks. After 10 weeks, the ratio of total cell number to glomerulus, extracellular matrix (ECM) and collagen (Coll) deposition, a-smooth muscle actin (a-SMA), type I collagen (Col1) expression, TGF-β1, p-Smad2/3mRNA expression and TGF-β1, p-Smad2/3 protein expression were compared in each group.
RESULTS: Masson staining revealed that in the model group, there was an increase in glomerular fibrosis, a heightened deposition of collagen fibers, and an expansion of interstitial spaces; Conversely, in the electroacupuncture group, the deposition of glomerular collagen fibers diminished. The intensity of a-SMA and ColI immunofluorescence staining in the kidney tissue of rats from the model group was markedly higher than that observed in the Sham group (p < 0.0001, < 0.0001 respectively). In contrast, the a-SMA and ColI immunofluorescence staining intensity in the TWG group was reduced compared to the model group (p = 0.009, 0.016 respectively). Furthermore, the expression levels of TGF-β1 and Smad3 messenger RNA (mRNA) in the kidney tissue of rats in the TWG group were lower than those in the model group (p = 0.013, 0.008, respectively), while the Smad7 mRNA was elevated compared to the model group (p = 0.019, 0.011, respectively). Additionally, the protein expression levels of TGF-β1 and p-Smad2/3 in the kidney tissue of rats in the TWG group were diminished compared to those in the model group (p < 0.0001, 0.006 respectively).
CONCLUSIONS: TWG can improve glomerulosclerosis and delay its progression, which may be achieved by down-regulating TGF-β1/Smad signal pathway.