WANG Jingbo,YANG Jinghang,GUO Wanyi,et al.Effect of Aqueous Extract of Sophorae Tonkinensis Radix et Rhizoma on Bone Destruction and PI3K/Akt Signaling Pathway in Rheumatoid Arthritis[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(23):30-37.
WANG Jingbo,YANG Jinghang,GUO Wanyi,et al.Effect of Aqueous Extract of Sophorae Tonkinensis Radix et Rhizoma on Bone Destruction and PI3K/Akt Signaling Pathway in Rheumatoid Arthritis[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(23):30-37. DOI: 10.13422/j.cnki.syfjx.20221801.
Effect of Aqueous Extract of Sophorae Tonkinensis Radix et Rhizoma on Bone Destruction and PI3K/Akt Signaling Pathway in Rheumatoid Arthritis
To observe the effect of aqueous extract of Sophorae Tonkinensis Radix et Rhizoma (STRR) on rheumatoid arthritis (RA) and to explore the anti-bone destruction mechanism based on phosphatidylinositol 3-kinase (PI3K)/serine/threonine-protein kinase (Akt) pathway.
Method
2
High-performance liquid chromatography (HPLC) was used to determine the content of main active components in aqueous extract of STRR, and type Ⅱ collagen to induce RA (CIA) in mice. The blank group, model group, methotrexate (MTX) group (0.5 mg·kg
-1
), and low-dose (100 mg·kg
-1
) and high-dose (200 mg·kg
-1
) STRR aqueous extract groups were designed. Joint swelling was observed and clinical scores of CIA mice were calculated. Pathological changes of mouse joints were observed based on hematoxylin and eosin (HE) staining, and Micro-CT was performed to monitor joint destruction. TRAP staining was used to observe osteoclast formation in mouse joint, and Western blot to detect the expression of key proteins in PI3K/Akt signaling pathway in mouse joint tissue.
Result
2
The model group demonstrated higher degree of joint swelling, clinical scores of CIA, and degrees of synovial hyperplasia, inflammatory cell infiltration (
P
<
0.01), and joint destruction, more osteoclasts, and higher levels of matrix metallopeptidase-9 (MMP-9), cathepsin K (CTSK), nuclear factor of activated T-cells cytoplasmic 1 (NFATc1), PI3K, and phosphorylated-Akt (p-Akt) proteins than the blank group (
P
<
0.01). Compared with the model group, the low-dose and high-dose aqueous extract of STRR alleviated joint swelling, reduced the clinical scores of CIA mice (
P
<
0.05,
P
<
0.01), relieved the pathological changes of joint tissue (
P
<
0.01) and joint destruction, decreased osteoclasts (
P
<
0.05,
P
<
0.01), and lowered the levels of PI3K/Akt signaling pathway-related proteins in joint tissue of mice (
P
<
0.01).
Conclusion
2
The aqueous extract of STRR can significantly delay the inflammatory response of RA and especially inhibit bone destruction by down-regulating the PI3K/Akt signaling pathway.
关键词
Keywords
references
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