OBJECTIVETo observe the effect of Xuebijing injection on serum protein level in the early phase of septic rats and explain the mechanism from the perspective of molecular biology.

METHODFifty-four healthy wistar rats were randomly divided into control group, sepsis group and Xuebijing treatment group. The rat model of sepsis was established with injecting lipopolysaccharide (LPS) through caudal vein. Serum total protein (TP) and albumin (ALB) were measured at the point of 6, 12 and 24 h with the established model. The expression of AMPK, eEF2 protein in liver in the three groups were detected by Western blot analysis.

RESULTCompared with control gruop, the concentrations of TP and ALB of sepsis group and Xuebijing group were no significant difference with 6, 12 h treatment TP and ALB in sepsis group was lower (P<0.01) than control group after 24 h, and the expression of phos-AMPK, pho-eEF2 protein in livers was increased (P<0.01) simultaneously. All measured indexes in Xuebijing group has no difference with control group. Compared with sepsis group, TP and ALB of Xuebijing group was significantly higher (P<0.05), but litle lower than control group, the expression of phos-AMPK, pho-eEF2 protein in livers was decreased (P<0.05) simultaneously.

CONCLUSIONThese data suggest that Xuebijing injection prohibits catabolising serum albumin and inhibit liver protein catabolism by method of AMPK way.

Animals ; Blood Proteins ; metabolism ; Disease Models, Animal ; Drugs, Chinese Herbal ; administration & dosage ; Humans ; Injections ; Male ; Random Allocation ; Rats ; Rats, Wistar ; Sepsis ; blood ; drug therapy ; pathology

Objective To investigate the influence of the Janus kinase-signal transducer and transcription activator(JAK-STAT)signaling pathway mediated by Kruppel-like factor 14(KLF14)on the prognosis of non-small cell lung cancer(NSCLC).Methods From January 2018 to September 2019,NSCLC tissues from 80 patients and malignancy-free paracancerous tissues from 25 patients were collected.Medical follow-up ended in April 2023.Immunohistochemistry was used to detect the expression of KLF14 in tissues,and the patients were divided into a high-expression group and a low-expression group according to the median level of KLF14 expression.Over-expres-sion or knock-down of KLF14 and JAK1 was achieved by transfection of KLF14 and JAK1 overexpression plasmid in A549 cells and transfection of KLF14 and JAK1 specific short hairpin RNA(shKLF14 and shJAK1)in HCC827 cells.The proliferation activity of cells was analyzed by cell clone formation test.Transwell analyzed the migration and invasion of cells.Results As compared with the normal paracancerous tissues,the expression of KLF14 in NSCLC tissue decreased(P<0.001).The low expression of KLF14 was significantly correlated with tumor diameter of>3 cm,lymph node metastasis and clinical stage Ⅲ(P<0.05).There was a significant difference in the overall survival rate between the high KLF14 expression group and the low KLF14 expression group,and the patients with low KLF14 expression had poor prognosis(P = 0.039).After overexpression of KLF14,the proliferation ability of A549 cells and the number of migration and invasion of these cells decreased significantly(P<0.05);while after knock-down of KLF14,the proliferation ability of HCC827 cells and the number of migration,and invasion of these cells increased significantly(P<0.05).As compared with Vector + KLF14 group,the number of colonies,migration and invasion of A549 cells in JAK1 + KLF14 group increased significantly(P<0.05).As compared with shNC + shKLF14 group,the number of colonies,migration and invasion of HCC827 cells in shJAK1 + shKLF14 group decreased significantly(P<0.05).Conclusions Low expression of KLF14 is associated with poor overall survival in NSCLC patients.Up-regulation of KLF14 significantly inhibits the proliferation and metastasis of lung cancer cells in vitro,and its mechanism may be related to inhibition of the JAK-STAT signaling pathway.

Objective:To compare the effect for establishing rat model of chronic obstructive pulmonary disease(COPD)be-tween two methods,inhalation of PM2.5 and intratracheal instillation of PM2.5 suspension.Methods:A total of 30 adult rats were randomly divided into control group(group A),group fumigated with PM2.5(group B),and group instilled intratracheal-ly with PM2.5 suspension(group C).Then the lung function of rats,the counts of inflammatory cells in bronchoalveolar lavage fluid(BALF),and the pathological sections of lung tissues,were observed on different phases.Results:Compared with that in group A,the body mass in group B or group C decreased.And the tidal volume(VT)and the peak expiratory flow(PEF)de-creased.Furthermore,total cell count,lymphocyte count(L),neutrophil count(N),lymphocyte proportion(L%),and neutro-phil proportion(N%)in BALF increased.All the differences showed statistical significance(all P <0.05).Morphological de-tection showed enlarged alveolar space,disruption of alveolar septa,fusion of alveoli,and formation of emphysema in group B. And it also showed disordered arrangement of airways epithelial cells,partial airway epithelial hyperplasia,inflammatory cell infiltration and proliferation of smooth muscle in group B.Furthermore,mean linear intercept (MLI)and mean alveolar num-ber (MAN)in group B increased,while compared with that in group A.The pathological changes in group C were similar to those in group B.However,the degrees of pathological changes in group C were more severe,and most of them were acute in-juries.Conclusions:Rat model of COPD established by inhalation of PM2.5 was more reasonable than that established by intra-tracheal instillation of PM2.5 suspension.