ABSTRACT
Objective To stuy the clinical value of combined DWI and PWI in diagnosis of cerebral infarction (CI) at different stages.Methods One hundred and sixty-eight elderly CI patients were divided into hyperacute phase group (n =32),acute phase group (n =64),subacute phase group (n=45) and chronic phase group (n=27).Their DWI and PWI parameters and abnormal brain regions were compared.Results The ADC on DWI for injured lateral brain tissue was significantly lower than that on DWI for unjured lateral brain tissue in hyperacute phase group and acute phase group (0.39±0.08 vs 0.83±0.03;0.32±0.07 vs 0.91±0.05,P＜0.01).However,the ADC on DWI for the injured lateral brain tissue was significantly higher than that on DWI for the uninjured lateral brain tissue in subacute phase group and chronic phase group (1.54±0.34 vs 0.85±0.07,2.01±1.29 vs 0.90±0.05,P＜0.01).The PWI showed that the CBV was smaller and the CBF was slower while the MTT and TTP were longer in CI patients at different stages.DWI＜PWI,DWI＞PWI,and DWI=PWI in abnormal signal region were more frequently detected in hyperacute phase,acute phase subacute phase and chronic phase respectively.Conclusion PWI can show ischemic penumbra while DWI can highlight infarct foci in CI patients.Combined PWI and DWI can display the CBF in CI patients at different stages,and can thus provide reference for the clinical treatment of CI.
ABSTRACT
Objective To explore the mechanisms of synergic action of commonly-used herb pair of Radix Sophorae Flavescentis (Kushen, KS) and Fructus Cnidii (Shechuangzi, SCZ) for the treatment of pruritus. Methods We predicted and analyzed the potential targets of KS and SCZ based on network pharmacology method, and then established Chinese herbs-compound skeletons-targets networks to reveal anti-pruritus targets, predicting targets, and the interaction of KS and SCZ, as well as the components of the herb pair. The RAW264.7 inflammatory cell model was established to observe the synergistic anti-inflammatory activity of KS and SCZ. Results KS and SCZ had possible synergic action on the pruritus-related targets such as histamine receptors, cannabinoid receptors and proteinase-activated receptor 2. Additionally, KS and SCZ probably had synergic regulation of inflammation-related pathway (Toll -like receptor signaling pathway , chemokine signaling and Fc epsilon RI signaling pathway) and nerve-related pathway(neurotrophin signaling pathway) during the treatment of pruritus. Flavones from KS and coumarin of SCZ had various synergistic anti-inflammatory activities(P<0.05), indicating that they played an important role in inhibiting pruritus induced by inflammation. Conclusion The method may reveal the molecular mechanism of KS and SCZ in inhibiting pruritus, which is important for the modernization of Chinese medicine and new drug development.