Objective To investigate the relation between the balloon occlusion test ( BOT) and the anatomy of the circle of Willis ( CW) , and to explore the role of balloon occlusion test in the treatment of internal carotid artery permanent occlusion. Methods Selected the clinical data of 49 patients (52 sides) who had BOT in our hospital from October 2009 to June 2015,and analyzed the relationship be-tween the occurrence rate of anterior communicating artery ( AcoA) / posterior communicating artery ( PcoA) and the positive rate of BOT retrospectively. Results The occurrence rate of the AcoA was 97. 9%, and the occurrence rate of PcoA in one side was 82. 7%. Negative rate BOT accounted for 92. 3% and AcoA occurred in all, while the positive rate accounted for 7. 7%, including 2 cases of right superior ar-teria cerebri anterior combined with ipsilateral PcoAs absence, 1 case of left superior arteria cerebri anterior combined with ipsilateral PcoAs absence, and 1 case of AcoA and PcoAs absence. Conclusion Before the permanent occlusion of the internal carotid artery, it’ s necessary to clarify the redistribution of the compensatory way of blood flow in the AcoA-absent cases. Implementing permanent occlusion for cases with complete circle of Willis would cause less ischemic risk.

Objective:To investigate the serum levels, diagnosis and prognosis value of endothelin-1(ET-1) in children suffering from lung metastasis of osteosarcoma.Methods:A total of 84 children with osteosarcoma, 67 children with lung metastasis of osteosarcoma and 35 healthy people from January 1, 2013 to January 1, 2018 in Second People′s Hospital of Nanyang were retrospectively included.The serum level of ET-1 was measured by performing enzyme linked immunosorbent assay(ELISA) methods and the influencing factors of serum ET-1 levels in children with lung metastasis of osteosarcoma were conducted by Logistic regression analysis.The clinical value of ET-1 in the prediction of the incidence of lung metastasis in children with osteosarcoma was analyzed by receiver operating characteristic (ROC) curve.Forty-five children with lung metastasis of osteosarcoma were followed up for 18 months and the prognosis value of serum ET-1 levels in children with lung metastasis of osteosarcoma was evaluated by Kaplan-Meier survival analysis. Results:The serum ET-1 level in children with lung metastasis of osteosarcoma was 97.23 (65.13, 134.98) ng/L and significantly higher than osteosarcoma group 60.21 (43.12, 74.63) ng/L and healthy control group 34.45 (12.01, 63.03) ng/L, respectively ( Z=-5.671, -4.92, all P<0.05), with significant differences. Logistic regression analysis proved that lung bilateral involvement ( OR=3.449), numbers of lung metastases (more than 3)( OR=3.449), average diameter of lung metastases (more than 5 cm) ( OR=6.501) and extrapulmonary metastasis ( OR=4.369) were independent risk factors for elevated serum ET-1 levels in children developing lung metastasis of osteosarcoma.The predictive value of ET-1 in the incidence of lung metastasis in children with osteosarcoma was significant (area under ROC curve: 0.841). When the cut-off value was 94.27 ng/L, the sensitivity and specificity were 88.5% and 92.6%, respectively.Survival analysis revealed that higher levels of ET-1 was correlated with poor prognosis ( OR=3.287, 95% CI: 1.119-9.547). Conclusions:The serum levels of ET-1 in children with lung metastasis of osteosarcoma are significantly elevated.ET-1 is a serological marker for the differential diagnosis of lung metastasis of osteosarcoma.Moreover, the higher levels of ET-1 are correlated with poor prognosis in children with lung metastasis of osteosarcoma.

Objective To explore the influence of rs1360780 T risk allele of FK506-binding protein 5 (FKBP5) gene on the brain function under resting-state and its association with clinical symptoms as well as immune function in patients with major depressive disorder (MDD).Methods Totally 147 MDD patients and 61 gender-,age-,and education-matched healthy controls were scanned with 3.0T MRI Scanner and genotyped.The peripheral serum immunoglobulin and complement were measured.The main effect of the disease,the genotype and their interaction effects were analyzed using regional homogeneity (ReHo) by two-way ANOVA.Abnormal brain activity was identified in T risk allele carriers of rs1360780 and non-risk CC individuals in MDD using post hoc analyses.Correlation analyses were performed between ReHo values of significant brain regions and the total score,five-factor scores of Hamilton rating scale for depression (HAMD-17),serum levels of immunoglobulin and plasma complement component in MDD patients.Results (1) The results of 2x 2 ANOVA showed the interaction effects located in the left opercular part of inferior frontal gyrus (MNI:x,y,z =-42,6,9;F=10.83),right opercular part of inferior frontal gyrus (MNI:x,y,z =30,6,33;F=15.05),left medial superior frontal gyrus (MNI:x,y,z=-9,54,0;F=9.17) and left pallidum (MNI:x,y,z =-12,6,-6;F=11.37) (Alphasim corrected,P＜ 0.05).(2) In post-hoc analyses for the main effect of genotype,T+ carriers with MDD showed increased ReHo values in the right opercular part of inferior frontal gyrus (MNI:x,y,z=60,12,6;t=2.88) compared with CC carriers;for the effect of diseaseby-genotype interaction,T+ carriers with MDD showed increased ReHo values in the right opercular part of inferior frontal gyrus (MNI:x,y,z=30,6,33;t=2.96) and decreased ReHo values in the left orbital part of inferior frontal gyrus (MNI:x,y,z =-21,9,-18;t =-3.21) (Alphasim corrected,P＜ 0.05) in contrast to CC carriers.(3)Pearson's correlation showed that the average ReHo values of the right opercular part of inferior frontal gyrus negatively correlated with the content of immunoglobulin G (r=-0.528,P=O.0016,Bonferroni corrected) and positively correlated with anxiety/somatization factor score (r=0.421,P＜0.001,Bonferroni corrected) in T + carrìers with MDD.Conclusion The results of this study suggest that rs1360780 T-risk allele of FKBP5 gene is involved in the changes of local neural activity in the right opercular part of inferior frontal gyrus of depressed patients and could potentially indicate a neuropathological mechanism of anxiety somatic symptoms and immune dysfunction in depression.

Objective To investigate the expression levels of HBV pregenomic RNA (pgRNA) and hepatitis B core-related antigen (HBcrAg) in circulating serum of chronic hepatitis B (CHB) patients after withdrawal from nucleos(t)ide analogues (NUC), as well as the correlation of HBV pgRNA and HBcrAg levels in circulating blood in different periods of time with recurrence in CHB patients after drug withdrawal. Methods Among the patients who attended the outpatient service of Affiliated Hospital of North Sichuan Medical College from December 2019 to July 2022, a total of 108 CHB patients who received anti-HBV therapy for at least 5 years and met the criteria for drug withdrawal in 2017 EASL Guidelines were enrolled. According to the time of drug withdrawal, the patients were divided into 4-, 12-, and 24-week groups after drug withdrawal, and according to the presence or absence of recurrence, they were divided into recurrence group and non-recurrence group. Quantitative real-time PCR was used to measure the level of HBV pgRNA in circulating serum of CHB patients; ELISA was used to measure the expression level of HBcrAg in peripheral venous blood; quantitative real-time PCR was used to measure HBV DNA load with high accuracy. The t -test was used for comparison of continuous data between two groups. A one-way analysis of variance was used for comparison of continuous data between multiple groups, and the least significant difference t -test was used for further comparison between two groups. The Pearson correlation test was used to investigate the correlation between the indices in circulating blood. Results For the CHB patients after drug withdrawal, the recurrence rate was 17.1% at 4-12 weeks, cumulative recurrence rate reached 29.3% after 24 weeks of follow-up, the patients with positive HBV DNA alone accounted for 64.3% and 60.0%, respectively, those with positive HBeAg alone accounted for 28.5% and 20.0%, respectively, and those with positive HBV DNA and HBeAg accounted for 7.1% and 20.0%, respectively. The expression levels of HBV pgRNA, HBcrAg, and HBV DNA in circulating serum of CHB patients at 24 weeks after drug withdrawal were significantly higher than those at the time of drug withdrawal and at 4 weeks after drug withdrawal, and there was a significant difference between groups at different time points (all P < 0.05). Compared with the non-recurrence group, the recurrence group had significantly higher expression levels of HBV pgRNA, HBcrAg, and HBV DNA in circulating serum ( t =2.549, 8.654, and 27.429, all P < 0.05), and further analysis of the recurrence group showed that the levels of HBV pgRNA, HBcrAg, and HBV DNA in circulating serum at 12-24 weeks were significantly higher than those at 4-12 weeks (all P < 0.05). At the time of drug withdrawal, the recurrence group had significantly higher expression levels of HBV pgRNA and HBcrAg in circulating serum than the non-recurrence group ( t =18.561 and 6.152, both P < 0.001). The Pearson correlation analysis showed that in the recurrence group after drug withdrawal, HBV pgRNA and HBcrAg were positively correlated with HBV DNA in circulating serum ( r =0.82 and 0.66, both P < 0.001), while no such correlation was observed in the non-recurrence group ( r =0.14 and 0.04, both P > 0.05). Conclusion The recurrence group had significantly higher expression levels of HBV pgRNA and HBcrAg than the non-recurrence group at the time of drug withdrawal, suggesting that the levels of HBV pgRNA and HBcrAg in the CHB patients of the non-recurrence group at the time of drug withdrawal may be used as the reference thresholds for safe drug withdrawal in CHB patients, and measurement of HBV pgRNA and HBcrAg may be one of the potential reference indicators for the selection of anti-HBV treatment endpoints in the future.