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• W3012302012 abstract "Qian Yang Yu Yin Granule (QYYY) is a Chinese herbal formulation. It is used to treat hypertensive nephropathy for decades in China, but it is unknown that the exact mechanism of QYYY on hypertensive nephropathy. The present study was to elucidate its epigenetic mechanism of QYYY on hypertensive nephropathy. In the current study, HEK293T cells’ proliferation induced by Ang II was chosen to observe epigenetic mechanisms of QYYY on renal damage. The cell proliferation was examined by MTT assays and ethynyldeoxyuridine analysis. Cell cycle analysis was performed. After treatment with QYYY, expression of Nicotinamide N-methyltransferase (NNMT), sirtuin1(SIRT1), S-adenosylhomocysteine(SAH), histone H3K4 methylation, and cortactin acetylation(acetyl-cortactin,ac-cortactin) were further investigated by western-blotting and real time PCR. DNA methylation was detected by ELISA. The study also observed the changes of SIRT1, SAH, H3K4 methylation, acetyl-cortactin when NNMT over-expressed by lentivirus transfection. Angiotensin II(Ang II) induced renal damage in spontaneously hypertensive rats(SHR). After eight weeks treatment of QYYY, blood pressure, serum and urine creatinine, and urinary microalbumin(mAlb) were assessed. The concentration of N1 -methylnicotinamide were detected by liquid chromatography with tandem mass spectrometry. The protein of NNMT, ac-cortactin, H3K3me3 were also assessed in vivo. QYYY inhibited HEK293T cells’ proliferation, down-regulated the expression of NNMT, SAH, acetyl-cortactin and DNA methylation, up-regulated the expression of SIRT1, histone H3K4 trimethylation(H3K4me3). Over-expression of NNMT increased the expression of SAH and acetyl-cortactin, and reduced the expression of SIRT1 and H3K4me3. The study also demonstrated that QYYY promoted urinary creatinine excretion and reduced serum creatinine and urinary mAlb in SHR. QYYY decreased the concentration of N1 -methylnicotinamide in Ang II group. QYYY decreased the protein of NNMT, ac-cortactin and increased H3K4me3 in vivo. The results showed that QYYY alleviated renal impairment of SHR and inhibited HEK293T cells’ proliferation induced by Ang II through the pathway of epigenetic mechanism linked to Nicotinamide N-Methyltransferase (NNMT) expression, including histone methylation, DNA methylation and acetyl-cortactin. This study unveiled a novel molecular mechanism by which QYYY controlled the progression of hypertensive nephropathy." @default.
• W3012302012 created "2020-03-23" @default.
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• W3012302012 date "2020-06-01" @default.
• W3012302012 modified "2023-09-27" @default.
• W3012302012 title "Qian Yang Yu Yin Granule protects against hypertension-induced renal injury by epigenetic mechanism linked to Nicotinamide N-Methyltransferase (NNMT) expression" @default.
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• W3012302012 doi "https://doi.org/10.1016/j.jep.2020.112738" @default.
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