The current classification methods for traditional Chinese medicine （TCM） visceral syndrome differentiation suffer from excessive generalization， which hinders their clinical application. Based on the analysis of the pattern of "one syndrome corresponding to multiple formulas"， this paper focused on the principle of syndrome-formula correspondence， and proposed that formula-syndromes are the smallest units for refining visceral syndromes. By establishing the correspondence between formula-syndromes and visceral syndromes， this study aims to further clarify the refined categories of syndromes and their treatment patterns， providing a new perspective for the standardization and objectification of TCM syndromes.

OBJECTIVE To explore the clinical effect of meropenem combined with cefotaxime sodium on treatment of interstitial pneumonia(IP)patients complicated with pulmonary infection and observe the influence on vascular endothelial growth factor(VEGF),Toll-like receptor 2(TLR2)and transforming growth factor β1(TGF-β1)so as to provide guidance for treatment of the IP patients complicated with pulmonary infection and assessment of curative effect.METHODS A total of 102 IP patients complicated with pulmonary infection who were treated in Guiyang Second People's Hospital from Feb,2022 to Feb,2024 were recruited as the research subjects and were randomly divided into the CTX group and the combination group,with 51 cases in each group.The CTX group was treated with cefotaxime sodium,and the combination group was given meropenem combined with cefotaxime sodium.The curative effect,lung function indexes,blood gas indexes,T lymphocyte subsets,peripheral blood VEGF,TLR2 and TGF-β1 were observed and compared between the two groups.RESULTS There was significant difference in the effective rate of treatment between the combination group and the CTX group(Z=7.229,P=0.007).The lung function of the combination group was better than that of the CTX group after the treatment for 7 days(P＜0.05);the levels of helper T cell type 1(Th1),Th1/Th2 and CD4+Foxp3+Treg of the combination group were higher than those of the CTX group(P＜0.05),while the Th2 level of the combination group was low-er than that of the CTX group(P＜0.05).The levels of VEGF,TLR2 mRNA and TGF-β1 of the combination group were respectively(32.14±8.77)pg/ml,(1.23±0.30)mRNA and(17.25±4.56)pg/ml,lower than those of the CTX group(P＜0.05).There were no significant differences in the drug-induced adverse reactions between the two groups of patients.CONCLUSIONS Meropenem combined with cefotaxime sodium can boost the curative effect on IP patients complicated with pulmonary infection,improve the lung function and blood gas indexes,reg-ulate the immune response,intensify the immune function,reduce the expression levels of VEGF,TLR2 mRNA and TGF-β1,and promote the rehabilitation of the patients.

OBJECTIVE To explore the clinical effect of meropenem combined with cefotaxime sodium on treatment of interstitial pneumonia(IP)patients complicated with pulmonary infection and observe the influence on vascular endothelial growth factor(VEGF),Toll-like receptor 2(TLR2)and transforming growth factor β1(TGF-β1)so as to provide guidance for treatment of the IP patients complicated with pulmonary infection and assessment of curative effect.METHODS A total of 102 IP patients complicated with pulmonary infection who were treated in Guiyang Second People's Hospital from Feb,2022 to Feb,2024 were recruited as the research subjects and were randomly divided into the CTX group and the combination group,with 51 cases in each group.The CTX group was treated with cefotaxime sodium,and the combination group was given meropenem combined with cefotaxime sodium.The curative effect,lung function indexes,blood gas indexes,T lymphocyte subsets,peripheral blood VEGF,TLR2 and TGF-β1 were observed and compared between the two groups.RESULTS There was significant difference in the effective rate of treatment between the combination group and the CTX group(Z=7.229,P=0.007).The lung function of the combination group was better than that of the CTX group after the treatment for 7 days(P＜0.05);the levels of helper T cell type 1(Th1),Th1/Th2 and CD4+Foxp3+Treg of the combination group were higher than those of the CTX group(P＜0.05),while the Th2 level of the combination group was low-er than that of the CTX group(P＜0.05).The levels of VEGF,TLR2 mRNA and TGF-β1 of the combination group were respectively(32.14±8.77)pg/ml,(1.23±0.30)mRNA and(17.25±4.56)pg/ml,lower than those of the CTX group(P＜0.05).There were no significant differences in the drug-induced adverse reactions between the two groups of patients.CONCLUSIONS Meropenem combined with cefotaxime sodium can boost the curative effect on IP patients complicated with pulmonary infection,improve the lung function and blood gas indexes,reg-ulate the immune response,intensify the immune function,reduce the expression levels of VEGF,TLR2 mRNA and TGF-β1,and promote the rehabilitation of the patients.

Objective:To compare the diagnostic efficacy of MR elastography (MRE), Gd-EOB-DTPA dynamic contrast-enhanced MRI (DCE-MRI) in early quantitative evaluation of liver fibrosis (LF) staging of experimental rabbits.Methods:From April to December 2019, 200 healthy rabbits were randomly divided into LF group ( n=160) and control group ( n=40). LF group were injected subcutaneously with 50% CCl 4 oil solution, while control group were injected with normal saline solution. The LF group ( n=40) and control group ( n=10) were randomly selected at the end of the 4th, 8th, 12th and 16th weeks respectively to undergo axial MRI scan including MRE and Gd-EOB-DTPA DCE-MRI. The quantitative parameter values were obtained, including liver stiffness (LS), volume transfer constant (K trans), reflux rate constant (K ep), volume fraction of extravascular extracellular space (V e) and volume fraction of plasma (V p). Histopathological LF staging was based on Scheuer staging. One-way ANOVA analysis was used to evaluate the differences of LS, K trans, K ep, V e and V p among different LF stages. The Spearman correlation analysis was used to evaluate the correlations between pathological LF staging and quantitative parameter values. The ROC curve was used to compare the diagnositic performance of all quantitative parameter values. Results:Among the final qualified 150 rabbits, there were 32 in F0, 32 in F1, 35 in F2, 30 in F3, 21 in F4. Significant differences of LS, K trans, K ep, V e and V p were found among different LF stages. There was correlation between LS, K trans, K ep and LF stages ( r=0.832, 0.730, -0.617, all P<0.001), respectively. However, no statistically correlation was found between V e, V p and LF stages ( r=-0.074, P=0.367; r=-0.078, P=0.342). The area under the ROC curve (AUCs) of LS were the greatest (0.920 for F0 vs F1-F4, 0.900 for F0 vs F1-F2, 0.945 for F0 vs F3-F4, 0.926 for F1-F2 vs F3-F4), while the AUCs of K trans were 0.897, 0.863, 0.942, 0.809, respectively. Conclusion:The early quantitative diagnostic efficacy for LF staging by MRE was superior to Gd-EOB-DTPA DCE-MRI in rabbits.

Objective To observe the changes in the expression of RANK/RANKL in rat kidney treated by tripterygium wilfordii polyglucosides (TWP) in STZ induced type 2 diabetic kidney disease (DKD) and to explore its possible renoprotective mechanism.Methods T2DM animal model was established by high glucose and high fat diet plus intraperitoneal injection of STZ.The modeled rats were randomly divided into DKD group(DKD,n=8) and TWP treatment group(DT,n=8).Normal rats were taken as control group(NC,n=8).DT rats were lavaged with TWP in a dose of 50 mg/kg · d,while the NC group and DKD group were lavaged with equal volume of normal saline every day.The indicators of FPG,FIns,UAlb,BUN,Scr,and Ucr were measured before and after 12-week intervention.PAS staining was used to evaluate the pathological change of the kidney.Immunohistochemistry and Western-blot were used to observe the protein expressions of RANK,RANKL,and nephrin.Results Compared with NC group,kidney pathological changes of DN group were aggravated with higher levels of FPG,UAlb,Ccr and BUN at 12th week.The expressions of RANK[(0.27±0.05) vs (0.68±0.11)] and RANKL[(0.23± 0.07) vs (0.62±0.08)] were prominently increased in kidney in DN group than those in NC group,while the expressions of nephrin were decreased(P＜0.01).Compared with DKD group,the above indexes and renal pathological changes were improved in DT group.The expressions of RANK[(0.45 ± 0.09) vs (0.68±0.11)],and RANKL[(0.39±0.06) vs(0.62±0.08)],were markedly inhibited in DT group,while nephrin expressions were increased(P＜0.01).Conclusion TWP can protect the kidney in rats with DKD by inhibiting the expression of RANK/RANKL.

Through introducing mutations into ribosomes by obtaining spontaneous drug resistance of microorganisms, ribosome engineering technology is an effective approach to develop mutant strains that overproduce secondary metabolites. In this study, ribosome engineering was used to improve the yield of butenyl-spinosyns produced by Saccharopolyspora pogona by screening streptomycin resistant mutants. The yields of butenyl-spinosyns were then analyzed and compared with the parent strain. Among the mutants, S13 displayed the greatest increase in the yield of butenyl-spinosyns, which was 1.79 fold higher than that in the parent strain. Further analysis of the metabolite profile of S13 by mass spectrometry lead to the discovery of Spinosyn α1, which was absent from the parent strain. DNA sequencing showed that there existed two point mutations in the conserved regions of rpsL gene which encodes ribosomal protein S12 in S13. The mutations occurred a C to A and a C to T transversion mutations occurred at nucleotide pair 314 and 320 respectively, which resulted in the mutations of Proline (105) to Gultamine and Alanine (107) to Valine. It also demonstrated that S13 exhibited genetic stability even after five passages.
Genetic Engineering ; Macrolides ; metabolism ; Point Mutation ; Ribosomal Proteins ; genetics ; Ribosomes ; metabolism ; Saccharopolyspora ; metabolism

Objective To explore whether the phosphorylation of NF-κB P65 subunit is involved in the cytotoxicity to and inflammation in an immortal human keratinocyte cell line HaCaT during cobalt chloride (CoCl2-induced chemical hypoxia. Methods HaCaT cells were treated with CoCl2 of 2 mmol/L to set up a chemical hypoxia-induced cell model of injury. Then, RNA interference was used to down-regulate the expression of P65 in CoCl2-induced HaCaT cells. After additional culture, cell viability was tested by cell counting kit8 (CCK-8), the levels of interleukin 6 (IL-6) and interleukin 8 (IL-8) were detected by ELISA kits, phosphorylated and total P65 protein was measured by Western blot. Results The exposure of HaCaT cells to 2 mmol/L CoCl2 for 0 to 4 hours enhanced the phosphorylation of P65, which began at 0.5 hour, peaked at 1.5 hours, and restored to the normal level at 4 hours, and the level of P65 phosphorylation was about 6.6 times that in the untreated control group. The CoCl2 of 2 mmol/L decreased the cell viability of HaCaT cells in a time dependent manner, and a significant difference was observed in the viability of HaCaT cells between CoCl2-treated and untreated HaCaT cells at 2, 4, and 6 hours (P ＜ 0.05, 0.01, 0.01 ). The release of IL-6 and IL-8 from HaCaT cells was also promoted by CoCl2 treatment. The knockdown of P65 expression with siRNA markedly suppressed the CoCl2-induced cytotoxicity to and increase in the release of IL-6 and IL-8 from HaCaT cells,despite of an increment in cell viability by about 11%. Conclusion The phosphorylated P65 subunit mediates CoCl2-induced cytotoxicity and inflammatory injury to HaCaT cells.

Aim To explore the effect of survivin in PC12 cells against injuries induced by cobalt chloride(CoCl_2).Methods PC12 cells were exposed to CoCl_2 at different doses in different time to set up the chemical hypoxia induced PC12 cells injuries model.Cell viability was tested by using cell counter kit-8.Dose-effect(200～1 000 μmol·L~(-1))and time-effect(0～48 h)relationship between hypoxia induced by CoCl_2 and the expression of survivin was evaluated by western blot.Results PC12 cells viability was inhibited significantly by CoCl_2 in a dose and time dependent manners;At the concentrations from 200 to 600 μmol·L~(-1) CoCl_2 for 24 h,survivin expression was upregulated in a dose dependent manner,peaking at 600 μmol·L~(-1) CoCl_2 treatment,exceeding this concentration of CoCl_2,with dose increasing,survivin expression decreased.At the dose of CoCl_2 up to 1 000 μmol·L~(-1),survivin did not express basically;Treatment with 600 μmol·L~(-1) CoCl_2 in different time,within the range of 0～36 h,the expression of survivin enhanced in time dependent manner.But with the extension of time,survivin expression was declining; 17-allylamino-17-demethoxygeldanamycin (2 μmol·L~(-1)),an inhibitor of Hsp90,not only decreased survivin overexpression but also obviously enhanced the injuries of PC12 cells induced by CoCl_2,which didn't damage PC12 cells alone.Conclusion Upregulation of survivin expression may be one of the endogenous defense mechanisms for PC12 cells against chemical hypoxia.