Objective To observe the effect of resveratrol on cognitive impairment in rats after chronic cerebral hypoperfusion,and to explore the underlying antioxidant mechanism of resveratrol.Methods The chronic cerebral hypoperfusion model was induced by permanent occlusion of bilateral common carotid arteries (2VO) in rats.Healthy male Wistar rats were randomly divided into 3 groups:sham-operated group,2VO group and 2VO+resveratrol group.Spatial learning and memory were assessed using the Morris water maze at 4 weeks after the occlusion.The levels of 4-Hydroxynonenal (4-HNE) and 8-Hydroxy-2′-deoxyguanosine (8-OHdG) in the cortex and hippocampal CA1 areas were detected using immunohistochemistry staining,for reflecting the lipid peroxidation and oxidative DNA damage.Results The escape latencies from the third day to the fifth day were longer in 2VO group than in sham-operated group[(42.1+5.4)s vs.(25.1±3.3)s,(36.4±4.4)s vs.(12.4±3.3) s,(30.4±4.0)s vs.(8.1±3.4)s,q=10.91、14.54 and 14.07,all P ＜0.01],while the time spent in the object square was shorter in 2VO group than in sham-operated group[(12.9+2.5)s vs.(18.9+2.2)s,q=6.47,P＜0.01].Compared with 2VO group,the escape latencies in 2VO+resveratrol group from the third day to the fifth day were shorter[(29.5+4.0)s,(25.6±4.3)s and (19.8±4.2)s,q=7.71,6.22 and 6.37,all P＜0.01],while the time spent in the object square was longer[(16.5±1.8)s,q=3.83,P＜0.05].Compared with the shamoperated group,the mean integral optical density (IOD) of 4-HNE and 8-OHdG in the cortex and hippocampus CA1 area were increased in 2VO group (265.1 + 9.0 vs.168.2 + 6.0,37.8 + 5.0 vs.24.0+4.0,q=31.89 and 7.48,both P＜0.01).And in the 2VO+resveratrol group,the mean IOD of 4-HNE and 8-OHdG in the cortex and 8-OHdG in hippocampus CA1 area were lower than in 2VO group (195.1±7.0,26.0±4.3,q=23.03 and 6.49,both P＜0.01).Conclusions Resveratrol can improve the cognitive impairment in rats after chronic cerebral hypoperfusion,which may be related to preventing oxidative damage.

Objective To evaluate the consistency of estradiol kits between E2-Ⅲ and the upgraded Enhanced Estradiol(eE2)kit with chemiluminescence immunoassay analyzer Siemens ADVIA Centaur.Methods Used duplicate samples and removed outliers to test the two reagents′stability;document EP9-A2 were used as reference to do the methodological comparison and bias estimation. Results There was good correlation between the two reagents with different concentrations,the correlation coefficients were grea-ter than 0.975;the percentage of bias was varied among different groups.Conclusion It is effective to reduce the interference of up-dated estradiol kits on the assisted reproduction treatment cycles by assessing the bias through comparison tests of the two kits in advance.

Objective To investigate fluorescence intensity of lipid ultrasound microbubbles constructed in vitro and targeted to leukaemia inhibitory factor receptor (LIFR) with a monoclonal antibody.MethodsThe LIFR-targeted ultrasound mierobubbles (MB-BSB-LIFR-AB) were constructed using a technology of biotin-avidin bridge.FITC labeled Avidin was incubated with lipid ultrasound microbubbles (MB) and biotinylated lipid microbubbles (MB-B).Two dilutions (1:4 and 1:16) of DTAF second antibody were incubated with four types of ultrasound microbubbles,including MB,MB-B,biotinavidin-MB (MB-BS),MB-BSB-LIFR-AB.The fluorescence intensity of microhubbles were graded as 0,1,2to 3.ResultsAfter incubating with FITC-avidin,MB-B displayed bright green fluorescence ( grade 3),but MB had no fluorescence ( grade 0).After incubating with two dilutions of DTAF second antibody (1:4 and 1:16),MB-BSB-LIFR-AB displayed brightest green fluorescence (grade 3) in both concentration,while MB-BS and MB-B only displayed dim green fluorescence (grade 1 ) at the dilution of 1:4,with MB displaying no fluorescence at either dilution (grade 0).Conclusions LIFR monoclonal antibody can be effectively conjugated to MB-B with biotin-avidin bridge.Fluorescence detection is a simple method for investigating the conjugation reliability of targeted lipid ultrasound microbubbles.

Objective:To explore the feasibility of artificial intelligence ultrasound to diagnose of biliary atresia (BA) based on deep learning.Methods:A total of 531 gallbladder ultrasound images in 177 cases of BA patients (BA group) and 585 gallbladder ultrasound images in 195 cases of Non-BA patients (Non-BA group) were collected in Hunan Children′s Hospital from September 2018 to October 2020. For the BA and Non-BA groups, all images were divided into training set and test set according to the ratio of 2∶1. The Mask R-CNN model was trained by training samples, and then the model was tested, according to patient and image as a unit respectively, to evaluate the gallbladder organ detection rate and the diagnostic accuracy of BA. In addition, the images of the test set were randomly numbered.Four sonographers were invited to interpret the images to calculate the diagnostic accuracy individually. Last, the diagnostic accuracy of the Mask R-CNN model was compared with that of sonographers.Results:In terms of the automatic detection of gallbladder organs, the detection rate in both BA and Non-BA group reached 100%, but there were 17 false alarms in 372 test images, with a false alarm rate of 4.57%. In terms of the diagnostic rate of gallbladders, when taking patient as a unit, the total diagnostic accuracy of the model in the test set was 95.97%, which was higher than that of the sonographers in other hospitals and the sonographer with intermediate professional title in our hospital, and the difference was statistically significant ( P<0.005). It was slightly higher than that of sonographer with senior professional title in our hospital (91.94%), but the difference was not statistically significant ( P=0.183). When taking picture as a unit, the total diagnostic accuracy of the model was 97.04%, which was higher than that of the sonographers in other hospitals and the sonographer with intermediate professional title in our hospital, and the difference was statistically significant ( P<0.001). It was slightly higher than that of sonographer with senior professional title in our hospital (94.09%), but the difference was not statistically significant ( P=0.05). Conclusions:The artificial intelligence technology based on Mask R-CNN can automatically and accurately detect gallbladder organs and diagnose BA, which is worthy of further study.

Objective To study the influence of overactive bladder (OAB) on the symptoms and quality of life (QoL) in patients after Transvaginal Tape-Obturator (TVT-O) treatment for stress urinary incontinence (SUI).Methods Eighty-two SUI women underwent TVT-O were included in this study.The perioperative ICI-Q-SF scores,including frequency of leakage,volume of leakage,and QOL scores,were collected to study the perioperative OAB prevalence and the influence of OAB on the improvement on the symptoms and QOL after TVT-O.Results The total efficacy of TVT-O was 95%.The average symptom and QOL scores in all patients decrease from (8.17±2.29)and (7.95±2.16)to (1.84±2.34)and(1.32±2.24)after TVT-O,P＜0.05.The prevalence of OAB decreased from 46% to 24% after TVT-O,P＜0.05.The average post-operation symptom and QOL scores of the pre-operation non-OAB group were (1.09±1.60)and(0.82±1.45),while those of the OAB group were (2.71±2.75) and (1.89±2.82),P＜0.05.The average post-operation symptom and QOL scores of the post-operation non-OAB group were (1.06±1.68) and (0.56±1.15),while those of the OAB group were (4.25±2.49) and (3.65±3.10),P＜0.05.Conclusions TVT-O is effective for female stress urinary incontinence and contributes to the significant improvement of symptoms and QOL in patients with OAB.The treatment will not raise the prevalence of OAB in itself.

Objective To study the changes of the symptoms and quality of life (QOL) in patients after the Transvaginal tape-obturator (TVT-O) treatment and weather would this treatment lead to bladder outlet obstruction (BOO) and bladder function change. Methods A total of 82 stress urinary incontinence (SUI) women who had underwent TVT-O were included, age from 39-82 years, 3-60 months after operation. All patients were divided into 5 groups by the time post-operation. The ICI-Q-SF scores were collected to study the change of the symptoms and QOL of each group perioperation. Qmax, PVR, bladder weight, wall thickness of each group were collected to study whether would TVT-O lead to BOO and bladder function change. Results Forty-five (55%) patients were cured and 33(40 %) improved after TVT-O. Total cure rate was 95 %. There was a significant improvement of average symptom and QOL in all of the 5 groups (3-month, 6-month, 1-year, 2-year, above-2-year) (P＜0. 05). Qmax changed from (32. 17±10.74), (25.64±6.05), (25.68±11.36), (25.70±10. 28), (25.29±15. 10)ml/s pre-operation to (28.30±15.21), (25.64±10. 48), (24. 49±7.96),(25.43±11.92), (25. 92± 10. 17)ml/s post-operation in 5 groups(P＞0. 05). PVR changed from (0.04±0.20), (0. 00±0.00), (0. 17±0. 39), (2.70±6.01), (1. 96±5.10)ml pre-operation to (1. 79±6.16), (0.00±0.00), (12. 50±29.89), (5.00±15. 54), (33. 70±92.10)ml post-operation in 5 groups(P＞0.05). The bladder weight changed from (43. 62±7.81), (41. 57±8. 63), (46.11±8.12), (42. 50±3. 85), (44. 52±4. 38)g pre-operation to (45. 62±5.32), (47.21±5. 47),(44.89±4. 65), (45. 14±4. 13), (46. 70±5.84)g post-operation, which differed significantly in 6-month, 2-year, above-2-year groups (P＜0. 05). The bladder wall thickness changed from (2.23±0.51), (2.22±0.47), (2.04±0.38), (2. 19±0. 43), (2. 19±0. 38)mm pre-operation to (2.25±0. 40), (2. 18±0.47), (2. 07±0.47), (2.22±0. 47), (2. 20±0. 44)mm post-operation(P＞0. 05).Conclusions TVT-O has a high cure rate for SUI and there was a significant improvement of average symptom and QOL of all patients after the treatment. But TVT-O may lead to BOO and bladder function change since bladder weight increases significantly in some patients.

Objective To observe the clinical efficacy ofQishen Erlian Decoction combined with entecavir for patients with liver fibrosis of hepatitis B.MethodsTotally 74 patients were divided into treatment group (38 cases) and control group (36 cases). The control group was given entecavir, while treatment group was given Qishen Erlian Decoction combined with entecavir, 48 weeks for 1 course. Entecavir was given to both groups after treatment, and two groups were followed up for 24 weeks. The liver function, DNA-HBV, serum TGF-β1, BMP-7, liver fibrosis indexes and clinical symptom changes of the two groups were observed.Results 3 cases were excluded and 3 cases were lost during follow-up in treatment group; 6 cases were lost during follow-up in the control group. Liver function and HBV-DNA in 12, 24, 36, 48 weeks and 24 weeks in follow-up were significantly lower than those pre-treatment (P<0.01) in the treatment group, and were significantly better than those in the control group (P<0.01). TGF-β1 decreased (P<0.05), BMP-7 increased (P<0.01), and the ratio of TGF-β1/BMP-7 decreased (P<0.01) in both groups after treatment. There was significant difference between the two groups (P<0.05). HA, LN, PCⅢ,Ⅳ-C, and FS decreased significantly in treatment group after treatment and in the follow-up (P<0.01), fatigue, discomfort in liver region, disgust oil and anorexia were improved (P<0.05), the difference was significant compared with control group (P<0.05).Conclusion Qishen Erlian Decoction combined with entecavir can not only protect liver and reduce aminotransferase, but also be antiviral and reverse liver fibrosis.

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Objective To investigate the effects of Qishen Erlian Decoction on serum MMP-1 and TIMP-1 levels in thioacetamide (TAA) induced liver fibrosis rats; To discuss its mechanism of action. Methods Liver fibrosis model was created by the TAA gavage method. 120 SD male rats were randomly assigned to control group, model group, colchicine group, Qishen Erlian Decoction low-, medium- and high-dose group (20 in each group). Each medication group was given relevant medicine for gavage. Control group and model group were given the same amount of normal saline for gavage, once a day for 5 weeks. HE staining and Masson trichrome staining were used to observe the pathological changes in liver tissue and liver tissue damage. Biochemistry, radioimmunoassay, and ELISA were used to detect the serum liver function, hepatic fibrosis index, MMP-1 and TIMP-1 levels. Results Compared with the model group, serum ALT, AST, TBIL, γ-GGT, HA, LN, Ⅳ-C and PCⅢ levels, MMP-1 and the ratio of MMP-1/TIMP-1 increased significantly and level of TIMP-1 decreased significantly in Qishen Erlian Decoction groups, with statistical significance (P<0.05, P<0.01). And there is a certain dose-effect relationship, with Qishen Erlian Decoction high-dose group the best effect. Conclusion Qishen Erlian Decoction can improve the liver function and liver fibrosis indexes, regulate the level of MMP-1 and TIMP-1, and prevent the progression of liver fibrosis.

Objective To explore the relationship between the clinical features,serological markers and European League Against Rheumatism SS Disease Activity Index (ESSDAI) scores of primary Sj(o)gren's syndrome (SS).Methods We enrolled 106 patients,who fulfilled the 2002 classification criteria for primary SS from December 2008 to January 2015,to evaluate the relationship among the clinical characteristics,laboratory features,serological variables and ESSDAI scores.According to serological variables,the prognosis was subdivided into three distinct groups:favourable (no serological markers),intermediate (one serological marker) and poor (two or more serological markers).These data were analyzed by Chi-square test and variance analysis.Results The mean ESSDAI score of 106 pSS patients was (11±7).ESSDAI score was categorized according to the EULAR-SS recommendations as low activity,moderate activity and high activity (scores of 0-4,5-13 and ≥14,respectively),and the positive rate of antinuclear antibody (ANA) 1:100 (6 cases,37.5％;37 cases,66.1％;32 cases,94.1％) in three different ESSDAI levels was statistically different (x2＝18.110,P＜0.01).Those with positive ANA 1:100[positive (13±7) and negative (7±4)],anti-SSA antibody postive (12±7) and negative (9±7),anti-RNP antibody (positive 16±9 and negative 10±6) had higher ESSDAI scores than those with negative ones (F=8.812,P=0.0001;F=3.862,P=0.024;F=5.786,P=0.004).No statistical difference in ESSDAI means were found between patients with positive anti-SSB antibody,rheumatoid factor (RF),FS level,dry mouth,Raynoud's phenomenon and psychosomatic diseases.The ESSDAI scores of favourable group,intermediate group and poor group were significantly different (8±5,10±7,14±7,F=8.715,P=0.000 1).In comparison with the other two groups,the poor pSS patients had a higher frequency of positive ANA 1:100 (15 cases,55.6％;20 cases,57.1％;40 cases,90.9％),anti-SSA antibody(11 cases,0.7％;23 cases,41.1％;36 cases,81.8％),anti-SSB antibody (6 cases,2 2.2％;13 cases,37.1％;23 cases,52.3％),anti-RNP antibody (0 case,0;2 cases,5.7％;9 cases,20.5％) (x2=17.408,P=0.002;x2=14.306,P=0.006;x2=12.330,P=0.015;x2=1 1.482,P=0.022).Conclusion Patients with two or more serological markers may have higher ESSDAI score,and which in turn may associate with poor prognosis.