Objective To investigate the effects of decoction, ethanol extract, and formulated granules of different processed products of Polygonum multiflorum in conventional doses on kidney injury, renal cell apoptosis and expression of related protein in SD rats. Methods Half male and half female SD rats were randomly divided into 7 groups according to their body weight:normal control group, traditional water extract of raw Polygonum multiflorum group(SW group),traditional water extract of prepared Polygonum multiflorum group(ZW group), 70% alcohol extract of raw Polygonum multiflorum group(SA group),70% alcohol extract of prepared Polygonum multiflorum group(ZA group), raw Polygonum multiflorum granules without water decocting extraction group(SK group)and prepared Polygonum multiflorum granules without water decocting extraction group(ZK group). Among them,the rats in the normal group were intragastrically given distilled water,and the other groups were treated with the corresponding drug liquids[6 g/(kg·d)of crude drug]for consecutive 30 days. At the end of the experiment,changes in the levels of blood urea nitrogen(BUN), creatinine(Crea), uric acid(UA)and β2-microglobulin(β2-MG)were measured by a semiautomatic biochemical analyzer. In addition,the histopathological changes of kidney tissues were examined,renal cell apoptosis was detected by TUNEL assay, and the expression of Bcl-2 and BAX was determined by immunohistochemical analysis. Results Compared with the normal control group,the levels of BUN in each drug administration group were significantly lower(P<0.05,P < 0.01). The levels of Crea, UA, and β2-MG in each drug administration group all showed an increasing tendency compared with the normal control group, especially, the level of β2-MG in the ZA group was significantly increased(P< 0.05). The result of TUNEL assay showed that the average optical density in each drug administration group was significantly higher than that in the normal control group(P< 0.01). In addition,the expression level of BAX in the SA group was significantly increased(P < 0.01), but expression of Bcl-2 showed no significant difference among the groups(P> 0.05). Conclusions Our findings indicate that the long-term administration of Polygonum multiflorum with a daily dose of 6 g/kg of crude drug can cause some damages to the kidneys, and the degrees of kidney injuries are ranked as alcohol extract > formulated granules > water extract. We would suggest that for patients with impaired renal fuction,Polygonum multiflorum should be used with caution, and do not used for patients with severely impaired renal function. For people long-term using Polygonum multiflorum for health care purposes, it is recommended only to use its water extract,and to control renal function,especially,β2-microglobulin,at regular intervals,to avoid irreversible kidney injury.

OBJECTIVE: To observe the effects of Modified Rhizoma Alismatis decoction on the expression of aquaporin 8 (AQP8) in liver tissue of hyperlipemia model rats, and to investigate the mechanism of preventing and treating hyperlipemia.METHODS: Total of 60 rats were randomly divided into blank control group (distilled water), model group, positive control group (simvastatin 1. 89 mg/kg) and modified Rhizoma Alismatis decoction high-dose, medium-dose and low-dose groups (29. 56, 14. 78, 7. 39 g/kg, calculated by crude drug), with 10 rats in each group. Those groups were given high-fat diet to induce hyperlipemia model and given relevant medicine intragastrically once a day for consecutive 5 weeks except that blank control group was given normal diet. After administration, the serum contents of TG, TC, HDL-C and LDL-C in rats were detected, and the pathomorphology changes of liver tissue were observed; the mRNA and protein expression of AQP8 in liver tissue were detected. RESULTS: Compared blank control group, the serum contents of TG, TC and LDL-C in model group were increased significantly (P<0. 05 or P<0. 01),while the serum content of HDL-C was decreased significantly (P<0. 01); pathological changes were found in liver tissue, such as irregular cell arrangement and hepatic sinusoidal hyperemia and edema; mRNA and protein expression of AQP8 in liver tissue were increased significantly (P<0. 01). Compared with model group, above indexes of treatment groups were improved significantly (P<0. 05 or P<0. 01); the structure of liver tissue tended to be normal and the fatty degeneration was obviously alleviated. CONCLUSIONS: Modified Rhizoma Alismatis decoction can regulate the mRNA and protein expression of AQP8 in liver tissue so as to play the effects on the prevention and treatment of hyperlipidemia.

Objective:To preliminarily discuss the mechanism of Salvia miltiorrhiza and Rrhizoma alismatis in the prevention and treatment of lipid metabolism through regulating the imbalance of fibrinolytic system in rats with non-alcoholic fatty liver. Methods:The model of non-alcoholic fatty liver in rats was duplicated by high-fat diet feeding. Totally 60 adult Wistar rats were randomly divided into 6 groups (n=10 per group), namely the control group, the model group, Salvia miltiorrhiza group, Rrhizoma alismatis group, Salvia miltiorrhiza and Rrhizoma alismatis group,and Dongbaogantai group. The control group and the model group were given distilled water,and the other group was given Salvia miltiorrhiza,Rrhizoma alismatis,Salvia miltiorrhiza combined with Rrhizoma alismatis and Dongbaogantai,respectively. Rhizoma Alismatis decoction at high dose and low dose as well as Dongbaogantai was respectively adminis-trated in the designed groups,and the corresponding indices were detected 4 weeks later. Results:In the model control group,the con-tents of TC、TG、FFA in serum and the expression of PAI-1 were significantly elevated(P<0.05 or P<0.01),while the expression of t-PA was significantly reduced(P<0.01).After treatment,the contents of TC、TG、FFA in serum and the expression of PAI-1 in every treatment groups were reduced(P<0.01),while the expression of t-PA was elevated(P<0.01).Conclusion: Increasing the expres-sion of t-PA and reducing the expression of PAI-1 might be viewed as the mechanisms of Salvia miltiorrhiza and Rrhizoma alismatis in the prevention and treatment of non-alcoholic fatty liver disease.

Objective To summarize the experiences of diagnosis and treatment for blunt tracheobronchial injuries ( BTI) . Methods From January 1993 to December 2013, 15 patients were diagnosed with BTI and underwent surgical treatment at our hospital.Mean age of the 15 patients (11 men and 4 women) was 26.4 ±4.5 years.All the patients had a history of trauma, which included crushing injury in 8 cases, deceleration injury in 4, fall injury in 2, and traction-type injury in 1.BTI loca-tion: right main bronchus in eight cases, left main bronchus in four cases, upper trachea in one case, lower trachea with the right main bronchus in one case, and cervico-thoracic trachea with left main bronchus in one case .Thoracic computerized tomo-graphy was performed in 15 patients, which showed pneumothorax, subcutaneous emphysema, pneumomediastinum or falling lung sign of Kumpe.Preoperative fiberoptic bronchoscopy examination was performed in 15 cases, which included bronchial atresia in 9 cases, bronchial transection in 3 cases, laceration of trachea in 2 cases, and tracheal transection in 1 case.An e-lective surgical procedure after BTI was performed in 10 cases, and emergency surgery was performed in 5 cases.Tracheo-bron-chial laceration repair were performed in 2 cases, tracheal end-to-end reanastomosis in 1 case, and bronchial end-to-end re-anastomosis in 12 cases.Results There was no operative death, and one case was complicated with anastomotic stenosis.The average operation time was 205.7 ±41.3 minutes, and the average blood loss was 268.4 ±109 ml.The postoperative hospi-tal stay was 11.6 ±3.7 days on average.Follow-up was completed in 15 patients (mean, 29.3 months), and 15 patients were all symptomatic improvement .Conclusion The most common site of BTI was the right main bronchus near Carina parts .Al-though the diagnosis and treatment are often delayed , our findings indicate that chest CT and endoscopic findings could be used for the diagnosis of BTI.Surgical resection and reconstruction are effective methods to repair BTI successfully even many months after they occur.Often they do not require the resection of pulmonary parenchyma .

Objective To investigate the value of real-time elastography (RTE) in evaluating the characteristics and elasticity index (E-index) changes at different echo level of uterine fibroids before and after radiofrequency ablation (RFA).Methods A total of 43 patients (with 55 lesions) accepted RFA under ultrasound guidance in the Fourth Affiliated Hospital of Harbin Medical University from September 2013 to January 2015.All lesions were confirmed to have no perfusion through ultrasonography 1 h after RFA.The diameter of lesions ranging from 1.0 cm to 3.0 cm (with an average of 1.9± 1.2 cm).Preoperative lesions were classified into 3 groups for comparison based on ultrasonic echo type,group A:hypo echo (n=30);group B:hyper echo (n=12);and group C:mixed echo (n=12).Measured elasticity index E-index and internal uniformity (△ E) were analyzed.Comparisons of E value and△ E value were performed with repeated measures.RTE images features using x2 test of Fisher inspection comparison at the same time differences between groups.Results (1) Before RFA,RTE images showed blue alternating with green with green being dominated accounting for 70％ (21/30).50％ of RTE images in group B were completely covered in blue (6/12),while group C exhibited 53.9％ blue alternating with green with blue being dominated (7/13).There were statistically significant characteristics of RTE images among 3 groups (P ＜ 0.01).1 h after RFA,74.5％ lesions exhibited with blue being dominated (41/55).However,83.6％ (41/55) exhibited with blue 3 months after RFA.The difference in characteristics of RTE among 3 groups displayed no statistical significance (P ＞ 0.05).(2) The comparison of E-index revealed that before RFA,the E value was the lowest in the group A and the highest in the group B,while the group C was between them.There was significant difference between group A and B (F=19.25,P ＜ 0.01).E-index elevated in all the three groups and significant differences were found 1 h,3 month after RFA in comparison with that before RFA in the group A (F=386.75,294.68,both P ＜ 0.01).In addition,significant differences were also found 1 h,3 month after RFA in comparison with the treatment in the group B (F=29.98,45.88,both P ＜ 0.01).As for the group C,there were significant differences in E-index 1 h,3 month after RFA compared with before RFA (F=120.29,139.64,both P ＜ 0.01).3 months after RFA,E-index further elevated in the three groups and no significant inter-group difference was found at the same time points (P ＞ 0.05).(3)Before RFA,the△ E value was lower in group A and group B,while higher in the group C,group C presenting significant difference from group A and B (F=484.68,344.15,both P ＜ 0.01).At 1 h after RFA,△ E value was higher in group A and group C,while lower in group B,with group B showing significant difference from the low and mixed echo groups (F=53.58,94.79,both P ＜ 0.01).Significant difference was observed 1 h after surgery compared to before RFA in group A (F=154.35,P ＜ 0.01).Significant difference was also found 1 h after RFA compared to 3 month after RFA in group A (F=266.85,P ＜ 0.01).As for group C,there were also significant differences in△ E-index before treatment and 1 h after RFA compared with 3 month after RFA (F=103.24,76.53,both P ＜ 0.01).At 3 months after RFA,△ E-index decreased in all three groups.No significant inter-group difference was found at the same time points (all P ＞ 0.05).Conclusions RTE characteristics and the elasticity index are distinctly different among uterine fibroid at various echo intensities.RTE contributes to judging changes in hardness before and after RFA.The application of RTE for quantitative comparison of lesion hardness and uniformity can be served as the foundation for evaluating therapeutic effects of RFA.

Objective:To explore the prognostic value of PD-L1 expression level in patients with metastatic renal cell carcinoma (mRCC).Methods:The clinicopathological and survival data of patients with mRCC in our hospital from Jan 2014 to Apr 2016 were retrospectively analyzed including 46 males and 15 females. The median age of these patients was 56 years(range: 29-75 years), with 41 patients ≤60 years and 20 patients >60 years. The baseline data before the systemic therapy showed 36 patients(59.0%)had 1 metastatic organ and 25 patients (41.0%) had equal or more than 2 organs to be metastasized. Among them, 17 patients(27.9%)had lung metastasis and 54 patients(88.5%)had liver metastasis. Abnormal baseline LDH occurred in 4 patients and 52 patients had normal LDH. Favorite and intermediate risk patients categorized by MSKCC risk stratification accounted for 59.6%(34 patients)and 40.4%(23 patients), respectively. Six patients(9.8%)experienced distant metastasis at initial diagnosis, with 4 of them undergoing primary site resection, and the other 55 patients undergoing radical nephrectomy. PD-L1 expression was detected by the immunohistochemical staining method. PD-L1 staining rate ≥1% detected on the tumor cell membrane was defined as positive expression. The correlation between PD-L1 expression and clinicopathological characteristics were compared. Kaplan-Meier method and log-rank test were used to compare the differences about DFS and OS under different factors. Cox proportional hazards regression model is used for multivariable analysis of survival data.Results:The detailed pathological types of the 61 patients with renal cell carcinoma were classified as 53 clear cell carcinomas, 3 papillary carcinomas, 1 collecting duct carcinoma, 2 translocation renal cell carcinomas and 2 being unclassified. There were 4, 20, 19 and 9 patients categorized as WHO/ISUP nuclear grade 1, 2, 3 and 4, and 26, 12, 20 and 2 patients were categorized as T 1, T 2, T 3 and T 4 stage, respectively. Five patients had regional lymph node metastasis(N+), and the other 56 patients had no regional lymph node metastasis(N-). The numbers of patients categorized as stage Ⅰ, Ⅱ, Ⅲ and Ⅳ diseases according to TNM staging system were 20, 11, 21 and 8, respectively. The total PD-L1 positive rate was 24.6%(15/61). The corresponding PD-L1 expression rate of patients with WHO/ISUP nuclear grade 1-4 were 0(0 patient), 5.0%(1 patient), 31.6%(6 patients)and 44.4%(4 patients), respectively; With the increasing WHO/ISUP nuclear grade, the positive rate of PD-L1 gradually escalated with a linear correlation ( P=0.006). The PD-L1 expression of the normal and abnormal LDH group were 19.2%(10 patients)and 75.0%(3 patients), respectively, with significant difference( P=0.035). Univariate analysis of disease-free survival time(DFS)showed that the prognostic factors include PD-L1( P=0.045), age group( P=0.014), WHO/ISUP nuclear grade( P<0.001), T stage( P=0.015), N stage( P=0.026)and TNM stage( P=0.005). However multivariate analysis only suggested WHO/ISUP nuclear grade as the independent prognostic factors for DFS( HR=1.8, 95% CI 1.1-2.9, P=0.018). Either in univariate or multivariate analysis, PD-L1 was not a prognostic factor for overall survival (OS)of mRCC patients(univariate analysis: P=0.154; multivariate analysis: P=0.902). The independent prognostic factors of OS include WHO/ISUP nuclear grade( HR=3.0, 95% CI 1.1-8.0, P=0.033)and MSKCC risk stratification( HR=5.9, 95% CI 1.2-29.7, P=0.03). Conclusions:This study showed that the higher the WHO/ISUP nuclear grade of patients with mRCC, the higher the positive rate of PD-L1. PD-L1 expression was not the independent prognostic factor for DFS or OS of mRCC.

[Abstract] Objective: To explore the expression patterns of melanoma lineage antigens and nuclear antigen Ki-67 and their correlations with survival in melanoma patients. Methods: A retrospective analysis was conducted to analyze the pathological data of melanoma patients treated at the Department of Melanoma, Peking University Cancer Hospital from February 2008 to August 2020, mainly including the expression patterns of melanoma lineage antigens (S-100, HMB-45, Melan-A) and Ki-67, demographics, clinical features and survival. The correlation between expression patterns of melanoma lineage antigens, Ki-67 and melanoma-specific survival (MSS) was analyzed. Results: In total, 603 patients were included in this study. The median follow-up time was 47.4 months. The positive rates of S-100, HMB, and Melan-A were 92.8%, 92.1% and 90.0%, respectively. The percentages of patients with melanoma lineage antigen scores (S-100, HMB-45 and Melan-A was scored each, as 1 when positive and 0 when negative) of 0, 1, 2, and 3 were 0.5%, 5.0%, 15.6%, and 78.8%, respectively. The percentages of patients with Ki-67 scores of 0, 1, 2, and 3 were 43.0%, 36.3%, 16.3%, and 4.5%, respectively. Ki-67 was highly expressed in mucosal and progressive melanomas. In a multivariate analysis, Ki-67 expression was an independent prognostic factor for poorer MSS (HR=1.506, 95%CI: 1.248-1.818, P<0.001) as the incidence of MSS event increased by 50% per 25% increase in Ki-67 expression, whereas there was no statistical correlation between melanoma lineage antigen expression and MSS (HR=0.991, 95%CI: 0.759-1.293, P=0.94). Conclusion: High expressions melanoma lineage antigens are ubiquitous in melanoma tissues, and Ki-67 is an independent prognostic factor for MSS.