达原饮是治疗瘟疫初起邪伏膜原的要方,也是治疗湿邪内伏膜原证的要方.临床上通过加减化裁,可用于治疗重症急性呼吸综合征(SARS)、新型冠状病毒肺炎(COVID-19)、肝炎、发热等疾病.现代研究表明达原饮具有抗病毒、解热、抗炎等药理作用.本文主要对达原饮临床应用以及药理作用进行综述,为其进一步研究与开发利用提供参考.

龙胆泻肝汤属于传统的中医汤药,包括10味中药,有泻肝但不伤肝、利湿但不伤阴的功效,诸药配伍应用相辅相成,疗效确切.龙胆泻肝汤主要用于治疗皮肤科疾病,具有抗菌、解热、利胆、消炎、安神、利尿等作用.近年来,随着对龙胆泻肝汤的深入研究,其药理作用不断增多,本文就龙胆泻肝汤的药理作用及其临床应用研究进展进行综述.

Objective To study the inhibitory effect and mechanism of dipeptide peptidase inhibitors analogues on LPS -induced inflam-matory response on microglia .Methods Microglia cells were cultured ,isolated and purified from the neonatal Sprague-Dawley rats.Divided them into blank group ,negative control ,LPS group and medicine group ( parallel determination for 3 times each group ) after pharmacological preconditioning for 48 hours.The optimal concentration of microglia proliferation induced by LPS were measured by MTT assay .Observed the role of dipeptide peptidase inhibitors analogues on LPS-induced microglia in different concentrations .The interleukin1β( IL-1β) ,tumor necro-sis factor alpha ( TNF-α) were assayed by enzyme-linked immunorrbent assay ( ELISA ) .The expression of TLR-4 was detected by Western blotting and the expression of NF-κB was detected by RT-PCR.Results LPS induced the proliferation of microglia and significantly in-creased the release of inflammatory cytokines in LPS-stimulated primary microglia .Compared with the blank group ,dipeptide peptidase inhibi-tors analogues could inhibit this effect and the IC 50 values was 1.014 ×10 -2 mol/L to MG after pretreatment for 48 hours.Dipeptide peptidase inhibitors analogues could inhibit the release of TNF-αand IL-1 significantly(P<0.01),and it decreased the expression of TLR4 and NF-κB signif-icantly(P<0.01).Conclusion This research suggests that dipeptide peptidase inhibitors analogues restrain cell proliferation and inflammatory re-sponse of LPS-stimulated microglia,and the possible mechanism may be related to the inhibition of the expression of TLR-4 and NF-κB.