Objective: To explore the direct and/or the enhancing antihypertensive effects of wind-dispelling herbs involvingFangfeng (Saposhnikoviae Radix) and Baizhi (Angelicae dahuricae Radix) using liver-yang hyperactivi...Objective: To explore the direct and/or the enhancing antihypertensive effects of wind-dispelling herbs involvingFangfeng (Saposhnikoviae Radix) and Baizhi (Angelicae dahuricae Radix) using liver-yang hyperactivity renalhypertension rat. Methods: Model rats with hyperactivity of liver-yang hyperactivity were prepared using male SD rats.Once successful, the rats were randomly divided into groups and given medicine by gavage for 4 weeks. Blood wascollected from the abdominal aorta to prepare serum. Serum nitric oxide (NO) concentration was determined bychemical colorimetry. The contents of ET, TXB2 and 6-K-PGF1a were determined by enzyme linked immunosorbentassay (ELISA). Results: Compared with the control model group, the blood pressure, serum ET and TXB2 of rats in thewind dispelling medicine group was not significantly reduced, while those of rats in captopril group, Tianma GoutengDecoction I group (TGD group) decreased significantly (P 〈0.05 for both). Interestingly, the blood pressure, serum ETand TXB2 of rats in the combination group (wind dispelling medicine & TGD) decreased significantly compared withboth wind dispelling medicine group and TGD group. Meanwhile, the levels of serum NO and 6- K-PGF1a in thecombination group was much higher than those in the wind dispelling medicine group or TGD group (P 〈0.05 for both).However, the levels of serum NO and 6- K-PGF1a in the wind dispelling medicine group was not significantly increasedcompared with the model group. Conclusion: There is no direct pressure lowering effects of wind dispelling medicinealone, while wind dispelling medicine could potentiates the antihypertensive effects of Tianma Gouteng Decoction I.Besides, the synergistic effects may be related to decreased ET and TXB2 levels and the increased NO and 6- K-PGF1alevels.展开更多
Objective:To observe the Levels of serum CORT, ACTH and CRH in SHR rats, the expression of GR, MR and CRH mRNA in hypothalamus and GR, MR mRNA in hippocampus of the ADHD model animal SHR rat, and to explore the HPA ax...Objective:To observe the Levels of serum CORT, ACTH and CRH in SHR rats, the expression of GR, MR and CRH mRNA in hypothalamus and GR, MR mRNA in hippocampus of the ADHD model animal SHR rat, and to explore the HPA axis function and related factors in SHR rats.Methods: Junior SHR rats were used as ADHD model group and WKY rats as control group. The levels of CORT, ACTH and CRH in serum were detected by ELISA, and the mRNA expressions of GR, MR, CRH in hypothalamus and GR, MR in hippocampus were detected by RT-PCR.Results:The levels of serum CORT and ACTH in SHR rats were significantly lower than those in WKY rats (P < 0.01), and the levels of serum CRH were significantly higher than those in WKY rats (P < 0.01). GR and MR mRNA expression levels in hypothalamus and hippocampus were significantly higher than those in WKY rats (P < 0.01), while CRH mRNA expression in hypothalamus was significantly lower than that in WKY rats (P < 0.01).Conclusion:The HPA axis of SHR rats showed hyporesponsiveness, which may be related to CRH priming disorder and high expression of GR and MR mRNA in hypothalamus and hippocampus.展开更多
文摘Objective: To explore the direct and/or the enhancing antihypertensive effects of wind-dispelling herbs involvingFangfeng (Saposhnikoviae Radix) and Baizhi (Angelicae dahuricae Radix) using liver-yang hyperactivity renalhypertension rat. Methods: Model rats with hyperactivity of liver-yang hyperactivity were prepared using male SD rats.Once successful, the rats were randomly divided into groups and given medicine by gavage for 4 weeks. Blood wascollected from the abdominal aorta to prepare serum. Serum nitric oxide (NO) concentration was determined bychemical colorimetry. The contents of ET, TXB2 and 6-K-PGF1a were determined by enzyme linked immunosorbentassay (ELISA). Results: Compared with the control model group, the blood pressure, serum ET and TXB2 of rats in thewind dispelling medicine group was not significantly reduced, while those of rats in captopril group, Tianma GoutengDecoction I group (TGD group) decreased significantly (P 〈0.05 for both). Interestingly, the blood pressure, serum ETand TXB2 of rats in the combination group (wind dispelling medicine & TGD) decreased significantly compared withboth wind dispelling medicine group and TGD group. Meanwhile, the levels of serum NO and 6- K-PGF1a in thecombination group was much higher than those in the wind dispelling medicine group or TGD group (P 〈0.05 for both).However, the levels of serum NO and 6- K-PGF1a in the wind dispelling medicine group was not significantly increasedcompared with the model group. Conclusion: There is no direct pressure lowering effects of wind dispelling medicinealone, while wind dispelling medicine could potentiates the antihypertensive effects of Tianma Gouteng Decoction I.Besides, the synergistic effects may be related to decreased ET and TXB2 levels and the increased NO and 6- K-PGF1alevels.
基金1.National Natural Science Foundation of China2.Yunnan Science and Technology Project.Project No:1.817608802.2017FF116-025.
文摘Objective:To observe the Levels of serum CORT, ACTH and CRH in SHR rats, the expression of GR, MR and CRH mRNA in hypothalamus and GR, MR mRNA in hippocampus of the ADHD model animal SHR rat, and to explore the HPA axis function and related factors in SHR rats.Methods: Junior SHR rats were used as ADHD model group and WKY rats as control group. The levels of CORT, ACTH and CRH in serum were detected by ELISA, and the mRNA expressions of GR, MR, CRH in hypothalamus and GR, MR in hippocampus were detected by RT-PCR.Results:The levels of serum CORT and ACTH in SHR rats were significantly lower than those in WKY rats (P < 0.01), and the levels of serum CRH were significantly higher than those in WKY rats (P < 0.01). GR and MR mRNA expression levels in hypothalamus and hippocampus were significantly higher than those in WKY rats (P < 0.01), while CRH mRNA expression in hypothalamus was significantly lower than that in WKY rats (P < 0.01).Conclusion:The HPA axis of SHR rats showed hyporesponsiveness, which may be related to CRH priming disorder and high expression of GR and MR mRNA in hypothalamus and hippocampus.