Objective:To investigate the predictive value of enhanced computed tomography (CT) combined with magnetic resonance imaging (MRI) examination on prognosis of clear cell renal cell carcinoma (ccRCC) and its correlation with clinical features. Methods:The postoperative follow-up data of enhanced CT and MRI of 80 patients with suspected (ccRCC) who admitted to Bozhou People's Hospital from March 2019 to May 2023 were selected,and they were divided into disease progression group (24 cases) and disease progression-free group (56 cases) according to the condition of disease progression. The disease progression of them were diagnosed through relevant examinations (collection of disease history,physical examination,enhanced CT,MRI,laboratory examination,pathological examination and so on). According to the information of clinical imaging,the age,gender,tumor diameter,with or without tumor thrombus,the location of tumor and surgical method were used to conduct single factor logistic regression analysis,so as to confirm independent predictors. Receiver operating characteristic (ROC) curve was used to analyze the predictive value of enhanced CT combined with MRI to the prognosis of ccRCC. The Pearson linear correlation was adopted to analyze the correlation between the results of enhanced CT combined with MRI and prognosis. Results:Based on the results of the follow-up study,CT value of cortex phase,CT value of medullary phase and apparent dispersion coefficient (ADC) in the disease progression group were significantly smaller than those in the disease progression-free group,and the differences of them between two groups were statistically significant (t=10.610,4.697,2.901,P<0.05),respectively. The diffusion coefficient (K value) of disease progression group was significantly larger than that of disease progression-free group,and there was significant difference between the two groups (t=6.375,P<0.05),while there was no significant in diffusion rate (D) between the two groups (P>0.05). The area under curve (AUC) values of ROC curve of single enhanced CT examination,single MRI examination and the combined examination of them were larger than 0.5 in predicting the prognosis of ccRCC,which indicated that both the two examinations had a certain value in predicting the prognosis of ccRCC,and the AUC value of combined examination was the highest (0.940),which indicated the value of combined examination was the highest in predicting the prognosis of ccRCC. There were not significant differences in gender,surgical method,tumor thrombus and tumor location between the two groups (P>0.05). The age and tumor diameter of the disease progression group were significantly larger than those of the disease progression-free group (t=4.292,3.219,P<0.05),respectively. The results of the logistic regression analysis showed that the age and tumor diameter were respectively independent influencing factor on the prognosis of ccRCC (HR=2.167,0.689,P<0.05). The results of Pearson correlation analysis indicated that there was negative correlation between enhanced CT examination and prognosis (r=-0.65,P<0.05),and there was positive correlation between MRI examination and prognosis (r=0.72,P<0.05). In addition,there was a negative correlation in the results between enhanced CT examination and MRI examination (r=-0.58,P<0.05). Conclusion:The prediction of enhanced CT combined with MRI examination is higher than that of each single examination of them for the prognosis of ccRCC,and there is a certain correlation between that and clinical features,but it is still necessary to conduct comprehensive judgement after combines other influence factors in clinical practice.

Objective:To investigate the predictive value of enhanced computed tomography (CT) combined with magnetic resonance imaging (MRI) examination on prognosis of clear cell renal cell carcinoma (ccRCC) and its correlation with clinical features. Methods:The postoperative follow-up data of enhanced CT and MRI of 80 patients with suspected (ccRCC) who admitted to Bozhou People's Hospital from March 2019 to May 2023 were selected,and they were divided into disease progression group (24 cases) and disease progression-free group (56 cases) according to the condition of disease progression. The disease progression of them were diagnosed through relevant examinations (collection of disease history,physical examination,enhanced CT,MRI,laboratory examination,pathological examination and so on). According to the information of clinical imaging,the age,gender,tumor diameter,with or without tumor thrombus,the location of tumor and surgical method were used to conduct single factor logistic regression analysis,so as to confirm independent predictors. Receiver operating characteristic (ROC) curve was used to analyze the predictive value of enhanced CT combined with MRI to the prognosis of ccRCC. The Pearson linear correlation was adopted to analyze the correlation between the results of enhanced CT combined with MRI and prognosis. Results:Based on the results of the follow-up study,CT value of cortex phase,CT value of medullary phase and apparent dispersion coefficient (ADC) in the disease progression group were significantly smaller than those in the disease progression-free group,and the differences of them between two groups were statistically significant (t=10.610,4.697,2.901,P<0.05),respectively. The diffusion coefficient (K value) of disease progression group was significantly larger than that of disease progression-free group,and there was significant difference between the two groups (t=6.375,P<0.05),while there was no significant in diffusion rate (D) between the two groups (P>0.05). The area under curve (AUC) values of ROC curve of single enhanced CT examination,single MRI examination and the combined examination of them were larger than 0.5 in predicting the prognosis of ccRCC,which indicated that both the two examinations had a certain value in predicting the prognosis of ccRCC,and the AUC value of combined examination was the highest (0.940),which indicated the value of combined examination was the highest in predicting the prognosis of ccRCC. There were not significant differences in gender,surgical method,tumor thrombus and tumor location between the two groups (P>0.05). The age and tumor diameter of the disease progression group were significantly larger than those of the disease progression-free group (t=4.292,3.219,P<0.05),respectively. The results of the logistic regression analysis showed that the age and tumor diameter were respectively independent influencing factor on the prognosis of ccRCC (HR=2.167,0.689,P<0.05). The results of Pearson correlation analysis indicated that there was negative correlation between enhanced CT examination and prognosis (r=-0.65,P<0.05),and there was positive correlation between MRI examination and prognosis (r=0.72,P<0.05). In addition,there was a negative correlation in the results between enhanced CT examination and MRI examination (r=-0.58,P<0.05). Conclusion:The prediction of enhanced CT combined with MRI examination is higher than that of each single examination of them for the prognosis of ccRCC,and there is a certain correlation between that and clinical features,but it is still necessary to conduct comprehensive judgement after combines other influence factors in clinical practice.

Objective To investigate the relationship of alcohol exposure during pregnancy and non-compaction cardiomyopathy (NCC) in offspring mice.Methods Pregnant mice of ED3.5-ED18.5 were given 56％ alcohol by gavage at a dose of 5 mL/kg.The ED19.5 mice were sacrificed,and the heart of the fetal mice was harvested.Transmission electron microscopy (filaments,mitochondria and sarcoplasmic reticulum) and HE staining were used to verify the changes of structure and ultrastructure of the obtained myocardial tissues.Echocardiography was used to evaluate the cardiac function and ventricular myometrium of the offspring mice after growing up.Results Alcohol exposure during pregnancy caused the disorganized and dissolved myofilaments in the fetal mice.Some offspring mice (31.25％,5/16) had NCC.The ratio of non-compacted myocardium to compact myocardium at the end of systole (N/C) was 2.49 ± 0.6 in the offspring mice of the alcohol exposure group,significantly higher than that in the control offspring mice (0.62 ± 0.23,t =10.397,P =0.000).The volume of heart was decreased in the offspring mice of the alcohol exposure group while the left ventricule was enlarged.Echocardiography showed cardiac dysfunction and thickened ventricular septal/left ventricular posterior walls in the grown-up mice of the exposure group.Conclusion Large dose of alcohol exposure during pregnancy cause trabeculations and non-compaction in ventricular myocardium,and it might be one of causers for NCC in the offspring.

In order to study the relationship between Staphylococcal nuclease(SNase) and diabetes mellitus,genetic engineering bacteria E.coli BL21/pET28a-His-SNase was constructed,the expression of soluble extracellular protein SNase was induced and the a preliminary research was made on it.An expression vector pET28a-His-SNase plasmid containing the His-SNase gene was constructed and transformed into E.coli BL21 (DE3) competent cells.The protein was induced by lactose and purified by ultrasound destruction and Ni-affinity chromatography,respectively.It was then analyzed by SDS-PAGE and Western blot.The enzymatic properties for SNase has been preliminary studied as well.Results indicated that the purity of the correctly expressed fusion protein HisSNase was over 85％.SNase showed good activity within a wide range of pH and good heat resistance.This experiment might be a foundation work for the further study on the relationship between SNase and with diabetes.