[Objective]To evaluate the efficacy of ureteral dilation versus ureteral reimplantation in treating pediatric primary obstructive megaureter(POM).[Methods]A retrospective analysis was conducted on clinical data of 53 pediatric patients with POM treated in the Department of Urology,Anhui Provincial Children's Hospital from April 2019 to September 2023.The cohort included 37 boys and 16 girls with 5 bilateral and 48 unilateral cases.The age ranged from 1 to 157 months,with a median age of 17.00(5.50-48.00)months.Patients were assigned to 3 groups based on the management of the ureteral stricture segment:dilation group(18 cases,19 sides),Cohen group(20 cases,24 sides),and Lich-Gregoir group(15 cases,15 sides).The duration of the operations,postoperative hospital stays,postoperative indwelling catheters,postoperative D-J stents;changes in renal pelvis anteroposterior diameter and ureteral diameter;and postoperative complications were compared to evaluate the therapeutic effects.[Results]All 53 patients successfully underwent surgery.The dilation group showed significantly shorter operative time,postoperative hospital stay,and postoperative catheterization duration compared to the Cohen and Lich-Gregoir groups(P＜0.05).However,the postoperative D-J stent time was longer in the dilation group than in the other 2 groups(P＜0.05).Upon follow-ups for 6-12 months after stent removal,all groups demonstrated statistically significant reductions in renal pelvis anteroposterior diameter and ureteral diameter compared to preoperative values(P＜0.05).No significant differences were observed among the 3 groups in hydronephrosis resolution rates(P＞0.05).Additionally,the incidence of postoperative complications(urinary tract infection,vesicoureteral reflux,and reoperation for restenosis)did not differ significantly among the groups(P＞0.05).[Conclusions]Ureteral dilation demonstrated non-inferior short-term clinical efficacy compared to ureteral reimplantation in managing POM in pediatric patients.With reduced operative time,minimal invasiveness,and technical simplicity,ureteral dilation may be considered a preferential treatment option for children with POM.

Purpose To explore the role of translesion synthesis-related gene NmrA like redox sensor 1(NMRAL1)in the development of papillary thyroid carcinoma(PTC).Methods Bioinformatics analysis was em-ployed to investigate the expression of the NMRAL1 gene across various cancer types and its correlation with prognosis.Immunohistochemistry was utilized to analyze the expression pattern of NMRAL1 in PTC and conduct clinicopathological correlation analysis.Additionally,stable cell lines overexpressing NMRAL1 were established in TPC-1 cells.The effects of NMRAL1 overexpression on cell proliferation,migration,and invasion of TPC-1 and Nthy-ori 3-1 cells were assessed using CCK-8 assay,clonogenic assay,Transwell assay,and scratch assay,respectively.Furthermore,RT-qPCR experiments were conducted to investigate the regulatory effect of NMRAL1 on the expression of genes associated with translesion DNA synthesis.Results Bioinformatics analysis revealed that NMRAL1 was highly expressed in all 26 types of tumors compared to normal tissues in the TCGA x GTEx dataset.Patients with high expression of NMRAL1 in thyroid cancer had significantly lower survival rates than those with low expression(P＜0.05).In the immunohisto-chemical validation of 30 PTC samples,NMRAL1 had a positive rate of 73.33％,in PTC tissues,while it was not ex-pressed in adjacent normal thyroid tissues.The staining intensity scores of NMRAL1 in PTC and adjacent tissues exhib-it significant differences(P＜0.000 1).High expression of NMRAL1 was associated with the size of the tumor(P=0.027 4)and lymph node metastasis(P=0.044 1).In vitro functional experiments revealed a significant enhance-ment in both cell proliferation and migration/invasion capacities upon overexpression of NMRAL1(P＜0.05).Moreo-ver,mRNA and protein expression levels of translesion synthesis-related genes were upregulated(P＜0.001).Con-clusion NMRAL1 promotes proliferation and migration of thyroid carcinoma cells,suggesting that this function may be achieved by enhancing DNA damage repair capacity,thereby improving the survival of damaged cells.

Purpose To explore the role of translesion synthesis-related gene NmrA like redox sensor 1(NMRAL1)in the development of papillary thyroid carcinoma(PTC).Methods Bioinformatics analysis was em-ployed to investigate the expression of the NMRAL1 gene across various cancer types and its correlation with prognosis.Immunohistochemistry was utilized to analyze the expression pattern of NMRAL1 in PTC and conduct clinicopathological correlation analysis.Additionally,stable cell lines overexpressing NMRAL1 were established in TPC-1 cells.The effects of NMRAL1 overexpression on cell proliferation,migration,and invasion of TPC-1 and Nthy-ori 3-1 cells were assessed using CCK-8 assay,clonogenic assay,Transwell assay,and scratch assay,respectively.Furthermore,RT-qPCR experiments were conducted to investigate the regulatory effect of NMRAL1 on the expression of genes associated with translesion DNA synthesis.Results Bioinformatics analysis revealed that NMRAL1 was highly expressed in all 26 types of tumors compared to normal tissues in the TCGA x GTEx dataset.Patients with high expression of NMRAL1 in thyroid cancer had significantly lower survival rates than those with low expression(P＜0.05).In the immunohisto-chemical validation of 30 PTC samples,NMRAL1 had a positive rate of 73.33％,in PTC tissues,while it was not ex-pressed in adjacent normal thyroid tissues.The staining intensity scores of NMRAL1 in PTC and adjacent tissues exhib-it significant differences(P＜0.000 1).High expression of NMRAL1 was associated with the size of the tumor(P=0.027 4)and lymph node metastasis(P=0.044 1).In vitro functional experiments revealed a significant enhance-ment in both cell proliferation and migration/invasion capacities upon overexpression of NMRAL1(P＜0.05).Moreo-ver,mRNA and protein expression levels of translesion synthesis-related genes were upregulated(P＜0.001).Con-clusion NMRAL1 promotes proliferation and migration of thyroid carcinoma cells,suggesting that this function may be achieved by enhancing DNA damage repair capacity,thereby improving the survival of damaged cells.

[Objective]To evaluate the efficacy of ureteral dilation versus ureteral reimplantation in treating pediatric primary obstructive megaureter(POM).[Methods]A retrospective analysis was conducted on clinical data of 53 pediatric patients with POM treated in the Department of Urology,Anhui Provincial Children's Hospital from April 2019 to September 2023.The cohort included 37 boys and 16 girls with 5 bilateral and 48 unilateral cases.The age ranged from 1 to 157 months,with a median age of 17.00(5.50-48.00)months.Patients were assigned to 3 groups based on the management of the ureteral stricture segment:dilation group(18 cases,19 sides),Cohen group(20 cases,24 sides),and Lich-Gregoir group(15 cases,15 sides).The duration of the operations,postoperative hospital stays,postoperative indwelling catheters,postoperative D-J stents;changes in renal pelvis anteroposterior diameter and ureteral diameter;and postoperative complications were compared to evaluate the therapeutic effects.[Results]All 53 patients successfully underwent surgery.The dilation group showed significantly shorter operative time,postoperative hospital stay,and postoperative catheterization duration compared to the Cohen and Lich-Gregoir groups(P＜0.05).However,the postoperative D-J stent time was longer in the dilation group than in the other 2 groups(P＜0.05).Upon follow-ups for 6-12 months after stent removal,all groups demonstrated statistically significant reductions in renal pelvis anteroposterior diameter and ureteral diameter compared to preoperative values(P＜0.05).No significant differences were observed among the 3 groups in hydronephrosis resolution rates(P＞0.05).Additionally,the incidence of postoperative complications(urinary tract infection,vesicoureteral reflux,and reoperation for restenosis)did not differ significantly among the groups(P＞0.05).[Conclusions]Ureteral dilation demonstrated non-inferior short-term clinical efficacy compared to ureteral reimplantation in managing POM in pediatric patients.With reduced operative time,minimal invasiveness,and technical simplicity,ureteral dilation may be considered a preferential treatment option for children with POM.

Objective Todetecttheexpressionofvascularendothelialgrowthfactor(VEGF)andmigrationinhibitoryfactor (MIF) in colorectal cancer .Methods The immunohistochemical staining (SP method) was used to measure the expression of VEGF and MIF in 80 samples of colorectal cancer and 80 samples of normal colorectal tissues at 5 cm apart from the tumor edge . The relationship between VEGF and MIF with the clinical pathologic characteristics of colorectal cancer was anlyzed .Results The positive rates of VEGF and MIF in the colorectal cancer tissues were 77 .50% and 82 .50% respectively ,but which in the normal colorectal tissues were 22 .50% and 27 .50% respectively ,the positive rate of VEGF and MIF expression in the colorectal cancer tis‐sues were higher than that in the normal colorectal tissue with statistical difference (P<0 .05) .The expression of VEGF and MIF had correlation with the tumor infiltration depth ,lymph node metastasis ,and clinical stage ,but no correlation with gender ,age and histodifferentiation .Conclusion VEGF and MIF are highly expressed in the colorectal cancer tissues .

Objective:To observe the protective effect of Yulangsan polysaccharide ( YLSP) on liver injury induced by cyclophos-phamide(CTX) in mice. Methods:Liver injury induced by CTX in mice was used as the animal model and the mice were randomly di-vided into the normal group, CTX model group, biphenyldicarboxylate ( BPDC) group, YLSP group respectively with high, medium and low dose. Except the normal group, the other groups were injected with CTX, i. p. , for 7 days to make the model. Then the ani-mals in the YLSP groups were intragastrically administered with YLSP for 7 days. The activities of alanine aminotransferase( ALT) , as-partate aminotransferase( AST) in serum, malondialdehyde( MDA) , superoxide dismutase( SOD) , glutathione( GSH) and glutathione peroxidase ( GSH-Px) in liver tissue were investigated. Hematoxylin and eosin ( HE) stain was used to study the changes in hepatic tissue of the pathological mice. Results:Compared with the model group, YLSP could obviously reduce the activities of ALT, AST and the content of MDA, and increase the content of GSH, SOD and GSH-Px (P<0. 05 or P<0. 01). HE staining showed that YLSP had significant protective effect on liver injury induced by CTX. Conclusion:YLSP has protective effect on liver injury induced by CTX.

Objective To investigate the relationship between platelet-activating factor acetylhydrolase gene Arg92His(4, 275; G→A), Ile198Thr(7, 593; T→C) and Val279Phe(9, 994; G→T) mutation and cerebral artery athero-sclerosis stenosis. Methods Six hundred forty-twopatients with cerebral infarction underwent cerebral digital subtrac-tion angiography (DSA).The patients were then divided into cerebral artery atherosclerosis stenosis (CAAS) group(n=477) and control group(n=81) accroding to the site and severity of their cerebral artery stenosis. Furthermore, the CAAS group were divided into intracranial artery stenosis(ICAS) subgroup(n=251), extracranial artery stenosis(ECAS) subgroup (n=115) and extracranial-intracerebral artery stenosis(ECAS) subgroup(n=111). The distributions of genotype and allele frequencies of Arg92His,Ile198Thr and Val279Phe mutation of platelet-activating factor acetylhydrolase gene were ex-amined and comparied in different groups. Results There were significant differences in the distributions of genotype and allele of Arg92His mutation between ICAS subgroup and control group(42.6% vs. 30.3%;23.3% vs. 16.4%, P <0.05). These associations were not detected in ECAS and IECAS subgroups. There was no significant association be-tween Ile198Thr and Val279Phe and stenosis at any site(P>0.05). The distributions of genotype and allele of Arg92His, Ile198Thr and Val279Phe mutation were no significantly difference between CAAS group and control group (P >0.05). Conclusions Arg92His mutation may be associated with intracranial artery atherosclerotic stenosis.