Objective To study exogenous expression and subcellular localization of wild type (WT ) and mu-tant PAX3 proteins in vitro by generating their expression plasmids for further study of pathogenesis of Waarden-burg syndrome (WS) .Methods The plasmids pECE-PAX3 and pcDNA3 .0-HA were ligased after they were cut by double enzyme digestion using molecular cloning technique to generate recombinant eukaryotic expression plasmid pcDNA3 .0-PAX3-HA ,which was as a template to generate expression plasmids pcDNA 3 .0 -H80D -HA and pcDNA3 .0-H186fs-HA of novel mutations H80D and H186fs of PAX3 gene .All constructs were verified by di-rect nucleotide sequencing .NIH3T3 cells were transfected transiently with the expression plasmids of PAX3 ,H80D and H186fs respectively .The exogenous expression of WT PAX3 protein and mutant H80D ,H186fs proteins were analysed using Western blot assay ,while their subcellular distribution were observed using immunofluorescence as-say .Results The DNA sequences of expression plasmids of PAX3 and its mutant H80D ,H186fs were correct . Both WT and mutant PAX3 proteins were detected at the expected size .WT PAX3 and H80D proteins were only lo-calized in the nucleus ,whereas H186fs protein showed aberrant localization in both cytoplasm and nucleus .Conclu-sion We successfully generated the recombinant eukaryotic expression plasmids of PAX 3 gene and its mutants and drew preliminary conlusion of gene mutation having effect on subcellular distribution of WT PAX 3 proteins in vitro , which lays experimental basis for further study of the moceluar mechanism of WS caused by PAX3 gene mutations in China .

As the elderly increase in age, functions of various organs of the body is weakened, which easily leads to impaired mobility. Researches have found that effective nursing measures can slow mobility impairment in the elderly. This article summarizes and analyzes the relevant nursing measures at home and abroad, which aims to provide a reference for further researches on clinical nursing interventions for the mobility of the elderly.

The inhibitory effect of hydroxyapatite ultrofine powder (HAUFP) on tumor and the effect on the immunity function of body were investigated. The levels of IL-2 in the spleen cells and serum TNF levels in the tumor-bearing mice at the 7th day and 14th after peritoneal injection of HAUFP were detected by using the methods of colorimetric analysis of MTT and crystal purple decoration, respectively. The disappearance of the ascites of the mice was observed. The results showed that the levels of IL-2 and TNF in the tumor-bearing mice were higher obviously in the drug-treated group than in the control group (P<0.01), the ascites growth was inhibited. It was suggested that HAUFP could increase the levels of IL-2 and TNF of the tumor-bearing mice and improve the immune function of body.

The inhibitory effect of hydroxyapatite ultrofine powder (HAUFP) on tumor and the effect on the immunity function of body were investigated. The levels of IL-2 in the spleen cells and serum TNF levels in the tumor-bearing mice at the 7th day and 14th after peritoneal injection of HAUFP were detected by using the methods of colorimetric analysis of MTT and crystal purple decoration, respectively. The disappearance of the ascites of the mice was observed. The results showed that the levels of IL-2 and TNF in the tumor-bearing mice were higher obviously in the drug-treated group than in the control group (P<0.01), the ascites growth was inhibited. It was suggested that HAUFP could increase the levels of IL-2 and TNF of the tumor-bearing mice and improve the immune function of body.

Objective To observe serum interferon regulatory factor-5(IRF5)and suppressors of cytokine signaling-3(SOCS-3)levels in patients with colorectal cancer,and investigate predictive value of their levels on the occurrence of postoperative intestinal obstruction in patients.Methods A total of 100 colorectal cancer patients who attended the Cangzhou People's Hospital from January 2022 to March 2023 were selected as the study subjects.According to whether the patient experienced intestinal obstruction after surgery,they were divided into the intestinal obstruction group(n=14)and the control group(n=86).Preoperative serum levels of IRF5 and SOCS-3 were detected by enzyme-linked immunosorbent assay(ELISA).Factors influencing the occurrence of postoperative intestinal obstruction in colorectal cancer patients were analyzed by Logistic regression.Receiver operating characteristic(ROC)curve was used to analyze the diagnostic value of serum IRF5 and SOCS-3 levels on the occurrence of postoperative intestinal obstruction in colorectal cancer patients.Results Serum IRF5 levels in the intestinal infarction group(0.68±0.09ng/ml)were lower,but serum SOCS-3 levels in the intestinal infarction group(97.23±15.94pg/ml)were higher than in the control group(0.89±0.12ng/ml,75.03±12.46pg/ml),with significant differences(t=6.257,5.937,all P＜0.05).SOCS-3 was an independent risk factor(OR=2.197,95％CI:1.167～4.138,P＜0.05),and 1RF5 was an independent protective factor(OR=0.823,95％CI:0.705～0.961,P＜0.05)affecting the occurrence of postoperative bowel obstruction in patients with colorectal cancer.The areas under the curve(AUC)of serum IRF5,SOCS-3,and the combination of the two for the diagnosis of postoperative intestinal obstruction in colorectal cancer patients were 0.852(95％CI:0.767～0.915),0.817(95％CI:0.727～0.887)and 0.953(95％CI:0.891～0.985),respectively.The combined diagnostic efficacy of the serum IRF5,SOCS-3 was higher than the efficacy of the test alone,with significant differences(Z=1.967,2.034,P=0.049,0.042).Conclusion Serum IRF5 levels are reduced,but SOCS-3 levels are increased in patients with colorectal cancer.Both have a predictive value for the development of postoperative bowel obstruction in patients with colorectal cancer.