AIM: To explore the protective effects and mechanism of astragalus injection on asthmatic rats. METHODS: OVA was injected intraperitoneally and inhaled to produce the asthmatic rat models. Forty rats were randomly divided into five groups: control group, asthma group and astragalus groups of high, medium and low dose. The concentration of IL-5 in BALF and the expression of IL-5 mRNA, phospho-p38 MAPK in lung tissue were respectively measured by ELISA, in situ hybridization staining and Western blot. The number of inflammatory cell in BALF was calculated and histopathology changes were observed. RESULTS: The number of inflammatory cell and the concentration of IL-5 in BALF and the expression of IL-5 mRNA, phospho-p38 MAPK in lung tissue were higher in asthmatic rat group than those in normal control(P

Objective To investigate the correlation of extent and pattern of computed tomography ( CT) enhancement of tumor lesions and histological types in advanced gastric carcinoma .Methods A total of 121 ca-ses of advanced gastric carcinoma were included in this study .Tri-phase enchanced 64-slice spiral CT scan-ning was performed before operation for every patient .We judged the extent lesions′of and pattern of enhance-ment using axial images combined with reconstruction of VR ,MPR and MIP.Then the radiographic result of every subject was compared with its corresponding postoperative histological type after operation .Results In the pres-ent study,the correlation of extent of CT enhancement of tumor lesions and histological types were as follows :ade-nocarcinoma patients were mostly with moderate enhancement ( n=57,61.3%),mucinous adenocarcinoma pa-tients were mostly with mild enhancement (n=7,46.7%).While obvious enhancement were mostly observed in patients with signet ring cell carcinoma(n=8,61.5%).The correlation of pattern of CT enhancement of tumor lesions and histological types were as follows:adenocarcinoma patients were mostly with well -distributed en-hancement(n=58,62.4%),while endothecium obvious enhancement were mostly seen in patients with mucinous adenocarcinoma(n=13,86.7%)and signet ring cell carcinoma (n=7,58.3%).Conclusions There are signif-icant correlation between advanced gastric carcinoma′s tri-phases enhancement characteristics with 64-slice spiral CT and its histological types .Judging histological type using 64-slice spiral CT before operation is useful for formulating and optimizing the therapeutic regimen for gastric cancer patients ,and it is significant for observing the tumors′biological behavior and judging the curative effect .

This article was aimed to investigate the effect of theXin-Jiang-Tang(XJT) Granules on activity of hepatic glycometabolic key enzymes and liver function in streptozotocin (STZ)-induced type 2 diabetes mellitus (T2DM) rats. Fifty male SD rats were randomly divided into the normal control group with 8 rats fed with normal diet, and other rats in the model group fed with high-fat diet for 4 weeks. And then, STZ (40 mg·kg-1) was peritoneally injected once to induce T2DM rat model. The model rats were randomly divided into the T2DM model group, metformin (0.15 g·kg-1) group, and high-dose (12.64 g·kg-1) and low-dose (6.32 g·kg-1) XJT Granules group. The intragastric administration was given once a day for 8 weeks. After 8-week intervention, fasting blood glucose (FBG), fasting serum insulin (FINS), glycosylated hemoglobin (HbA1c), hepatic glycogen, serum ALT, AST, ALP,γ-GT and the activity of HK, PFK, PK, and G6PDH were detected. The results showed that comparing with the model group, XJT Granules group can obvious reduce FBG, FINS, HOME-IR, HbA1c and liver function indexes such as ALT, AST, ALP,γ-GT levels (P < 0.05,P < 0.01), increase the content of hepatic glycogen (P < 0.01), and the activity of HK, PFK, PK and G6PDH (P < 0.05,P < 0.01). It was conclude that XJT Granules can remarkably regulate glycometabolism of diabetic model rats and the regulatory mechanism may be associated with the increasing of HK, PFK, PK and G6PDH activity, promoting the synthesis of hepatic glycogen, improving liver function, downregulating FINS level, improving insulin resistance and eventually decreasing the level of FBG and HbA1c of T2DM rats.

Objective:To investigate the protective mechanism of TRPV4 channel inhibitor on blood-brain barrier(BBB)damage after traumatic brain injury(TBI).Methods:The TBI rat model was established.TRPV4 channel inhibitor HC067047 or PKC-δ inhibitor Rottlerin was used to detect changes in BBB permeability,neurological function score,and the expression of microvascular endothelial tight junction proteins ZO-1 and ZO-2 in brain injury areas after TBI.Results:Compared with the Sham group,BBB permeability significantly increased,brain neurological function score significantly decreased,and the expression of ZO-1 and ZO-2 significantly decreased in TBI group(P＜0.05).Compared with the TBI group,after administration of HC067047 or Rottlerin,changes in BBB permeability,brain neurological function score,the expression of ZO-1 and ZO-2 were partially reversed(P＜0.05).Conclusions:TBI-induced BBB injury may be mediated by TRPV4 channel regulating PKC-δ signaling pathway to affect the expression of tight junction proteins ZO-1 and ZO-2.Inhibition of TRPV4 channel function or PKC-δ signal molecule can partially alleviate BBB damage induced by TBI.This study may provide new ideas for the treatment of clinical TBI.