Objective: To design HBV DNA proficiency testing and system comparison samples with different concentration gradients, analyze their detection results in PCR detection systems, evaluate the nucleic acid detection capabilities of laboratories and differences between detection systems, and put forward suggestions for continuous quality improvement to participating laboratories. Methods: Three groups of randomly numbered proficiency testing samples (with HBV DNA reference concentrations of <2, 7.5, and 30 IU/mL respectively) were taken as the detection objects. Using nucleic acid test data from 11 provincial blood station laboratories as the source, the samples were grouped by detection system and laboratory successively, and statistical analysis was conducted. Results: Statistical analysis of the detection data of the three groups of samples based on detection systems and laboratories showed that from low to high concentration, the coincidence rate between the detection results of different detection systems and laboratories and the expected results showed an increasing trend: 38.89%, 85.90%, and 100.00%; the same system exhibited certain differences in performance among different laboratories. Conclusion: Through this proficiency testing and system comparison, it is found that there are certain differences in the detection capabilities of different laboratories and different nucleic acid test systems. Blood station laboratories should standardize processes, strengthen quality management and data analysis on the basis of being familiar with the detection performance of their detection systems, and at the same time strengthen the control of laboratory interference factors to continuously improve the nucleic acid detection capabilities of blood station laboratories.

BACKGROUND:Indolepropionic acid has been shown to reduce diabetes-induced central nervous system inflammation.However,there is a lack of research on whether to inhibit microglia M1 polarization for the treatment of spinal cord injury. OBJECTIVE:To investigate the mechanism of indolepropionic acid inhibition of microglial cell M1 polarization for the treatment of spinal cord injury through cell and animal experiments. METHODS:(1)In vitro experiments:BV2 cell viability was assessed using the CCK-8 assay to determine optimal concentrations of indolepropionic acid.Subsequently,BV2 cells were categorized into control group,administration group(50 μmol/L indolepropionic acid),lipopolysaccharide group(100 ng/mL lipopolysaccharide),and treatment group(100 ng/mL lipopolysaccharide + 50 μmol/L indolepropionic acid).Nitric oxide content was quantified using the Griess method.Real-time quantitative PCR and western blot assay were employed to measure mRNA and protein levels of pro-inflammatory factors.Cell immunofluorescence staining was conducted to assess inducible nitric oxide synthase expression.The Seahorse assay was employed to assess glycolytic stress levels in BV2 cells.(2)In vivo experiments:30 SD rats were randomly divided into three groups:sham surgery group,spinal cord injury group,and indolepropionic acid group.Motor function recovery in rats after spinal cord injury was assessed using BBB scoring and the inclined plane test.Immunofluorescence staining of spinal cord tissue was conducted to evaluate the expression of inducible nitric oxide synthase in microglial cells.ELISA was employed to measure protein expression levels of the pro-inflammatory cytokines interleukin-1β and tumor necrosis factor-α in spinal cord tissue. RESULTS AND CONCLUSION:(1)In vitro experiments:Indolepropionic acid exhibited significant suppression of BV2 cell viability when its concentration exceeded 50 μmol/L.Indolepropionic acid achieved this by inhibiting the activation of the nuclear factor κB signaling pathway,thereby suppressing the mRNA and protein expression levels of pro-inflammatory cytokines(interleukin-1β and tumor necrosis factor-α),as well as the M1 polarization marker,inducible nitric oxide synthase,in BV2 cells.Additionally,indolepropionic acid notably reduced the glycolytic level in BV2 cells induced by lipopolysaccharides.(2)In vivo experiments:Following indolepropionic acid intervention in spinal cord injury rats,there was a noticeable increase in BBB scores and the inclined plane test angle.There was also a significant decrease in the number of M1-polarized microglial cells in spinal cord tissue,accompanied by a marked reduction in the protein expression levels of pro-inflammatory cytokines(interleukin-1β and tumor necrosis factor-α).(3)These results conclude that indolepropionic acid promotes functional recovery after spinal cord injury by improving the inflammatory microenvironment through inhibition of microglia M1 polarization.

Objective:To analyze the correlation between elastic modulus of shear wave elastography of periurethral prostatic tissue and serum prostate-specific antigen(PSA)in patients with benign prostatic hyperplasia(BPH).Methods:A total of 200 BPH patients who received treatment in the Second People's Hospital of Hefei from October 2019 to October 2022 were collected by convenient sampling method,and all patients were subjected to ultrasound shear wave elastography and serum PSA examination,and the elastic modulus of periurethral prostate tissue was measured by shear wave elastography,and the mean of them was obtained.They were divided into mild group(96 cases),moderate group(59 cases)and severe group(45 cases)according to the results of the International Prostate Symptom Score(IPSS).At the same time,the related information of 30 cases without prostatic lesions who were selected from the prostate examination population were included into healthy control groups.The correlation between the elastic modulus of periurethral prostatic tissue and serum PSA was analyzed and compared.Results:Statistical analysis showed that there was significant difference in the elastic modulus value of prostate among various groups(F=190.914,P<0.05).Compared with the healthy control group,the elastic modulus values of prostate of the mild,moderate and severe groups were significantly increased,and the differences were significant(t=6.572,14.172,18.441,P<0.05),respectively.Compared with the mild group,the elastic modulus values of prostate of the moderate and severe groups were significantly increased(t=7.853,18.274,P<0.05),respectively.Compared with the moderate group,the elasticity modulus value of prostate of the severe group significantly increased(t=11.371,P<0.05).There was significant difference in serum PSA among BPH patients with different degrees(F=126.143,P<0.05).Compared with the healthy control group,the serum PSA values of the mild,moderate and severe groups significantly increased(t=10.694,14.368,13.804,P<0.001),respectively.Compared with the mild group,the serum PSA values of the moderate and severe group significantly increased(t=6.401,13.047,P<0.05),respectively.Compared with the moderate group,the serum PSA value of the patients in the severe group significantly increased(t=7.293,P<0.001).There was no significant correlation between serum PSA and the elastic modulus of periurethral tissues in the healthy control group(P>0.05).There were significant positive correlation between serum PSA and the elastic modulus of periurethral tissues in the mild,moderate and severe groups(r=0.314,0.296,0.354,P<0.05),respectively.Conclusion:Both serum PSA level and elastic modulus value of periurethral prostate tissue of BPH patients significantly increase,and there is a positive correlation between them.

Objective:To investigate the predictors of the efficacy of extracorporeal shock wave lithotripsy (ESWL) in the treatment of ureteral calculi, and to evaluate the predictive value of the maximum ureteral wall thickness (UWT) in the treatment of ureteral calculi with ESWL.Methods:The clinical data of 138 patients with ureteral calculi treated with ESWL in the Second People's Hospital of Hefei from January 2020 to December 2020 were retrospectively analyzed. There were 91 males and 47 females. The age was (50.9±14.8) years old. The body mass index was (25.3±3.6) kg/m 2. The stones of 73 cases were located on the left side and 65 cases were on the right side. 70 cases had upper ureteral stones, 18 cases had middle ureteral stones, and 50 cases had lower ureteral stones. The median length of the stone was 8.5 (7.5, 10.5) mm. The CT value of the stone was 509 (343, 783) HU. The anteroposterior diameter of the renal pelvis was 12.0 (10.1, 16.0) mm, and UWT was (2.8 ± 0.8) mm. All patients underwent urinary non-contrast CT before lithotripsy, and the UWT of the stone bed was measured on the CT images. According to the stone removal situation 2 weeks after the operation, the patients were divided into a successful lithotripsy group and a failed lithotripsy group. Univariate analysis was used to compare the differences of various indicators between the two groups, and multivariate logistic regression was used to analyze the independent predictors of ESWL in the treatment of ureteral calculi for the indicators. The receiver operating characteristic (ROC) curve was used to calculate the area under the curve (AUC) of each independent predictor, and the cut-off value, sensitivity and specificity were analyzed. Results:All operations were successfully completed, and the success rate of the first-stage lithotripsy was 71.7% (99/138). The results of univariate analysis showed that the stone length diameter, stone CT value, anteroposterior diameter of renal pelvis, stone skin distance, and UWT were significantly different between the successful lithotripsy group and the failure group ( P<0.05). There was no significant difference in age, gender, body mass index, stone side and stone location ( P>0.05). The results of multivariate logistic analysis showed that stone length ( OR=1.393, P=0.015), stone CT value ( OR=1.002, P=0.043) and UWT ( OR=17.997, P<0.001) were all for the efficacy of ESWL in the treatment of ureteral stones. The ROC curve was used to compare the three independent predictors. The area under the UWT curve was the largest (AUC=0.898, P<0.001), followed by the length of the stone (AUC=0.744, P<0.001), and the CT value of the stone (AUC=0.672, P= 0.002). The cut-off value for UWT was 3.19 mm, which had a sensitivity of 91.9% and a specificity of 71.8% for predicting the success of ESWL lithotripsy. When dividing the patients into thin wall group (UWT ≤3.19 mm) and thick wall group (UWT>3.19 mm) according to the cut-off value, the success rates of one-stage lithotripsy in the two groups were 89.2% (91 / 102) and 22.2% (8/36), respectively ( P<0.05). Conclusions:UWT, calculus length and calculus CT value are independent predictors of the efficacy of ESWL in the treatment of ureteral calculi, and UWT has the best predictive value. When UWT≤3.19 mm, the success rate of ESWL in the treatment of ureteral calculi is higher.

Aggressive fibromatosis(AF)is a rare soft tissue tumor clinically that presents with local aggressive growth, are prone to relapse, but rarely metastasize to distant sites. It occurs in the limbs, trunk, mesentery, etc., but is rare in the pelvis or around the urinary system. This article reported a case of ureteral stenosis secondary to pelvic AF. The surgical treatment was effective.

Objective To explore the predictive value of different CT signs in surgical treatment in patients with acute closed intestinal and mesenteric injury.Methods The CT data and follow-up results of 120 patients with acute closed intestinal and mesenteric injury(including 58 cases of surgical treatment and 62 cases of conservative treatment)were analyzed retrospectively.The diagnostic value and prognostic value in surgical treatment of different CT signs were analyzed.Results There were significant differences between the operation group and the conservative treatment group in mesenteric vascular amputation,mesenteric hematoma,vascular contrast agent extravasation, intestinal wall defect,pneumoperitoneum and peritoneal effusion (χ2＝4.69,P＝0.03;χ2＝21.40,P＜0.001;χ2＝13.95,P＜0.001 ;χ2＝11.34,P＝0.001;χ2＝80.65,P＜0.001).The CT signs of intraperitoneal effusion had the highest sensitivity for intestinal and mesenteric injury,and vascular contrast agent extravasation and intestinal wall defect had the highest specificity for surgical predictability of intestinal and mesenteric injury.ROC curves showed that abdominal gas accumulation had the highest predictive value for intestinal and mesenteric injuries (AUC＝0.92,95%CI:0.87－0.97),followed by mesenteric hematoma (AUC＝0.73,95%CI:0.64－0.82).Conclusion Intraperitoneal effusion has the highest sensitivity for intestinal and mesenteric inj ury,and vascular contrast agent extravasation and intestinal wall defect have the highest specificity for surgical predictability of intestinal and mesenteric injury.The overall value of intraperitoneal gas in predicting intestinal and mesenteric injury is highest.Combining different CT signs can improve the accuracy of clinical intervention for acute closed intestinal and mesenteric injury.

Objective: To investigate the short term clinical efifcacy of endovascular repair for complicated acute type Stanford B aortic dissection.
Methods: To retrospectively analyze the clinical data of 36 patients with complicated acute type Stanford B aortic dissection who received endovascular repair in our hospital from 2010-01 to 2014-06 including operational procedure and post-operative follow-up of CT angiography. There were 27 male and 9 female patients with the average age of 43.7 years (41-62) years.
Results: Successful operations were conducted in all 36 patients. 22 patients received endovascular repair combined with covering left subclavian artery (LSA),10 received endovascular repair combined with chimney technique, 2 received endovascular repair combined with vascular prosthesis bypass from left common carotid artery to LSA, 2 received endovascular repair combined with vascular prosthesis bypass from right common carotid artery to left common carotid artery, whose proximal parts were ligated. Viscera artery and lower extremity artery supply were restored gradually. No complication of endoleak occurred. There 30/36 (83.33%) patients were followed-up for 1 year, and 10 patients developed thrombus in full false lumen and 20 developed thrombus in partial false lumen after 1 year. Compared with pre-operative values, thoracic aortic true lumen volume increased in either thrombus in full false lumen (190 ± 68.7) ml vs, (125.3 ± 63.4) ml and thrombus in partial false lumen (166.2 ± 71.8) ml vs (110.1 ± 62.7) ml,P<0.001; thoracic aortic false lumen volume decreased (65.0 ± 67.4) ml vs (185.3 ± 66.6) ml and (132.3 ± 62.6) ml vs (224.5 ± 72.3) ml,P<0.001. Compared with pre-operative values, for patients with thrombus in full false lumen, the abdominal aortic true lumen volume increased (55.5 ± 12.4) ml vs (48.6 ± 12.2) ml,P<0.01; for patients with thrombus in partial false lumen, the abdominal aortic false lumen volume also increased (58.2 ± 21.5) ml vs (42.5 ± 18.5) ml,P<0.01.
Conclusion: For endovascular repair of complicated aortic dissection, covering LSA with chimney technique and hybrid operation of small incision could extend anchor zone and expand the range of endovascular repair which may improve the effect and reduce the complication for good short term effect.

Objective To improve early diagnosis of testicular torsion,reduce misdiagnosis and reduce the rate of orchiectomy.Methods The diagnosis and treatment of testicular torsion in 31 cases were retrospectively ana-lyzed.Results 54.8% misdiagnosis rate was in this group,all the 31 cases were diagnosed by color Doppler ultra-sound,including 19 cases of retained testicle and orchiectomy in 12 cases (38.7%).In 19 cases of this group retained testis,testicular torsion time within 5 hours was 2 cases,and postoperative had testicles survival.In the 6 cases of testicular torsion time within 5 hours to 10 hours,5 cases had the testis survival.In the 5 cases of torsion of testis time was 10 hours to 24 hours,3 caseshad the testis survival.In the 6 cases of testicular torsion time more than 24 hours,2 cases of testis survival.After postoperative following-up,19 cases of retained testis had no recurrence,all the 31 cases were found no contralateral testicular torsion and all cases sex hormone levels were in the normal levels. Conclusion Testicular torsion is easily misdiagnosed,color doppler ultrasound should be preferred.Early diagnosis and aggressive surgical exploration,unity and strictly control the orchiectomy surgery indications,means a lot to reduce the rate of orchiectomy.

With the advancement of modernization in traditional Chinese medicine, the application of nanotechnology in traditional Chinese medicine has been paid increasing attention. This article outlines the current status of nanotechnology patents in traditional Chinese medicine, and indicates that the awareness of intellectual property rights protection in the field of traditional Chinese medicine has been weak in China. This article also analyzes the characteristics and directions of development of nanotechnology-related patents in traditional Chinese medicine, and points out that university-industry cooperation should be strengthened to accelerate the industrialization of the patents.

Objective To summarize adverse reactions of common traditional Chinese medicine injection for the treatment of cardiovascular and cerebrovascular diseases,and put forward the countermeasures.Methods Adverse reactions of common traditional Chinese medicine injection for the treatment of cardiovascular and cerebrovascular diseases were arranged,and the reasons were analyzed.Results Adverse reactions were mainly skin and cardiovascular system diseases and so on,and were related with the quality of medicinal material,preparation process,and so on.Conclusion We should strengthen every link of production,from the medicinal plant to clinical use,improve the quality of traditional Chinese medicine injection,and strengthen the supervision to reduce the incidence of adverse reactions and ensure drug safety.