Effect and safety of Liqing granules in assisting to reduce serum uric acid in rats / 上海预防医学

ObjectiveTo establish a rat model of hyperuricemia （HUA）， to study the effect of Liqing granules on lowering serum uric acid， and to evaluate its safety . MethodsMale SD rats were randomly divided into solvent control group and model group according to their body weight. For the model group， serum uric acid （SUA） was determined after 7 days of intra-gastric administration of potassium oxyazinate. The model group were randomly divided into model control group， positive control group， and low， medium， high dose group based on SUA level. Each group from the model group continued to receive potassium oxyazinate in the morning. The animals in the model groups received 0.5% CMC-Na， 10 mg·kg-1 benzbromarone （Doses by body weight） and Liqing granules 0.6， 1.2， 2.4 g·kg-1 （Doses by body weight）， respectively in the afternoon. 0.5% CMC-Na suspension with the same volume was given both in the morning and afternoon for the solvent control group. Levels of SUA， creatinine （CREA）， alanine aminotransferase （ALT） and aspartate transaminase （AST） were determined after 32 and 45 days administration of the test substance. ResultsSUA of the model group was （218±23） μmol·L-1 after 7 days of modeling， which was significantly higher than that of the solvent control group （P<0.001）. After 32 days administration of the test substance， SUA didn’t significantly decrease in each dose group （P>0.05）. CREA in the medium and high dose groups significantly decreased （P<0.05）. After 45 days administration of the test substance， SUA in each dose group was significantly decreased （P<0.001）， but CREA， ALT， and AST were not significantly different in each dose group in comparison with the model control group （P>0.05）. ConclusionLiqing granules can assist in lowering blood serum uric acid in the rat HUA model， and no damage to liver and kidney function is found.

Experiences in surgical treatment of pelvic retroperitoneal neoplasms / 中华普通外科杂志

Objective:To summarize the experience of surgical treatment of pelvic retroperitoneal neoplasms.Methods:A total of 107 patients with pelvic retroperitoneal neoplasms underwent surgical treatment from Apr 2015 to Sep 2020. According to the neoplasm location, size, and the relationship with the surrounding tissues, individualize the surgical plan, analyze the patient's basic condition, bleeding volume, tumor size, whether it is the first operation,or combined organ resection, etc.to find out the relevant factors affecting the surgical complications.Results:The surgical route included anterior approach in 67 cases , sacrococcygeal approach in 21 cases, combined abdominal-sacral approach in 13 cases, and laparoscopy in 5 cases. Twenty-nine patients underwent combined organ resection, postoperative complications occurred in 27 patients including colorectal anastomotic leakage in 6 cases, urinary fistula in 6 cases, delayed pelvic floor healing in 6 cases, rectovaginal fistula in 3 cases, and postoperative bleeding in 2 cases. The statistical analysis show whether or not first operation is related to the occurrence of complications ( χ2=4.79, P<0.05) Conclusion:Pelvic retroperitoneal neoplasms need to be fully prepared before surgery and individualized design. Intraoperative combined bleeding control measures and combined organ resection can effectively increase the resection rate and ensure the safety of surgery.

Clinical analysis of solitary fibrous tumors of the abdomen and pelvis / 中华普通外科杂志

Objective:To investigate the pathogeny, diagnosis and treatment of solitary fibrous tumors of the abdomen and pelvis.Methods:Retrospective analysis was made on the clinical data of 12 SFT patients undergoing surgical resection in Peking University International Hospital from Jul 2015 to Jul 2019.Results:All patients underwent radical resection. After operation, complications in clued pelvic hemorrhage in 1 case and ureteral fistula in 1 case, all improved after conservative treatment.According to pathological and immunohistochemical results, 7 cases were MSFT and 5 cases were SFT. All patients were followed up for 2-53 months. 5 cases were recurrent, among which 1 case died of intestinal obstruction caused by tumor compression.Conclusion:The clinical manifestations of solitary fibrous tumors are mostly nonspecific.Imaging examination and puncture pathology are of great significance for preoperative diagnosis. Radical resection is an important means to improve the prognosis of patients.

Expression of ASPH protein in retroperitoneal liposarcoma and its clinical significances / 中华普通外科杂志

Objective To investigate the expression of Aspartate Beta-Hydroxylase (ASPH) in retroperitoneal liposarcoma (RL)and evaluate its clinical significances.Methods Relevant clinical data of 69 RL cases after surgical resection were collected.The expression of ASPH in tumor tissues was detected by immunohistochemistry.The CTL epitopes of ASPH protein HLA-A2 were predicted by SYFPEITHI and NetMHCpan software.Results The overall positive rate of ASPH expression for the whole group was 81％,that for well-differentiated liposarcoma was 73％,dedifferentiated liposarcoma was 87％ (P ＜ 0.05).ASPH expression was positively correlated with the postoperative recurrence free survival rate (P ＜ 0.05).Five HLA-A2 restricted CTL epitopes (9 peptides) were screened with the method of motif prediction.Conclusions ASPH expression is positively correlated with the degree of malignancy of RL,and the ASPH expression is an independent risk factor for postoperative recurrence free survival rate of RL.Moreover,ASPH was found to have 5 HLA-A2 restricted CTL epitopes,which are expected to be used for the immunotherapy of RL.

Preparation of multilayer alginate chitosan microspheres loading VEGF and vancomycin / 吉林大学学报(医学版)

Objective:To prepare the multilayer alginate chitosan microspheres loading vascular endothelial growth factor (VEGF) and vancomycin (VAN), and to study in vitro release characteristics.Methods:The microspheres were prepared by emulsion cross-linking and self-assembly techniques.The effects of sodium alginate concentration, calcium chloride concentration, oil/water ratio and span80 concentration on the entrapment efficiency(EE) and drug loading(DL) of VEGF and VAN were investigated by orthogonal experimental design to optimize the preparation process.The surface morphology and particle size of microspheres were observed by scanning electron microscope (SEM).Self-assembly was detected by Fourier transform infrared spectroscope (FTIR).The EE, DL and in vitro release of VEGF and VAN were detected by ELISA double antibody sandwich method and ultraviolet spectrophotometry,and the cumulative release curve was drawn.Results:The prepared microspheres were yellowish brown powder.The SEM results showed that the microspheres were spherical, the surface was smoothy, and the dispersity was better.The average particle size was about 50 μm.Sodium alginate concentration of 1.0 g·mL-1, CaCl2 concentration of 8 g·mL-1, oil to water ratio of 3∶1, and span80 concentration of 2% were the best formula.The EE of VEGF and VAN were 49.63% and 16.67%, respectively.In vitro, the cumulative release last 16.5 d and 12.5 d respectively and the amount reached up to 95%.Conclusion:The multilayer alginate chitosan microspheres loading VEGF and VAN present several advantages, such as smaller particle size, higher EE and better controlled release.

Construction of deep flexor tendon transection models:peritenon transplantation prevents tendon adhesions / 中国组织工程研究

BACKGROUND:The adhesion between muscle tendon and surrounding tissue after tendon restoration is one hot topic in clinic. OBJECTIVE:To construct a deep flexor tendon transection model in the third toe of female Leghorn chicken and to explore the effect of peritenon transplantation on the prevention of tendon adhesions. METHODS:After the transection models were successful y established, the third toe of left claw was taken as experimental group A. The transected tendon was sutured, the tendon anastomosis end was wrapped with the peritenon of the deep flexor tendon from the ipsilateral fourth toe (experimental group B). The third toe of right claw served as control group A, the transfected tendon was sutured and restored with the peritenon. The fourth toe of right claw was taken as control group B. Gross observation and histological observation of the tendon were performed. RESULTS AND CONCLUSION:At 28 days postoperatively, gross observation and histological observation of Leghorn chicken were performed and compared using the Kruskal-Wal isH and Nemenyi test, respectively. The results showed that, the therapeutic effect was better in experimental group A than in control group A (P0.05). The flexor function was evaluated and compared with the least significant difference t-test. The results showed that the postoperative effect was better in experimental group A than in control group A (P0.05). Peritenon transplantation can effectively prevent tendon adhesions and has little impact on normal tendon sliding.

Intubation treatment of acute laryngeal obstruction: a case report / 临床耳鼻咽喉头颈外科杂志

Acute laryngeal obstruction is one of the most common diseases in Department of ENT, and it can cause suffocation without prompt treatment. Methods by using Nasopharyngofiberoscope guided tracheal intubation treatment of a case of acute laryngeal obstruction patients in a timely manner. This method is well tolerated, less trauma, high success rate, in the shortest time to improve the patient's ventilation, for the next step of the treatment to win the time.

Tendon adhesion prevention：status and progress / 中国组织工程研究

BACKGROUND:Tendon adhesions after tendon repair have been one of the problems difficult to solve in clinical practice. OBJECTIVE:To introduce the current situation and progress of the prevention of postoperative tendon adhesions. METHODS: A computer-based search of CNKI, Wanfang, PubMed databases for articles related to prevention of tendon adhesions published from January 1971 to May 2014 using the keywords of “tendon injury; tendon adhesions; progress” in Chinese and English, respectively. Repetitive content and irrelevant articles were excluded, and finaly 40 articles were included in result analysis. RESULTS AND CONCLUSION: In this paper, we analyze the characteristics of tendons and causes of tendon adhesions, summarize the methods for prevention of tendon adhesions and the therapeutic effects, and thereby analyze the pros and cons of various methods and materials for prevention of tendon adhesions. Prevention of tendon adhesions after tendon repair involves various aspects: thorough debridement, better surgical approach, microsurgical repair of tendon tissues, applications of drugs and barrier materials, physical therapy as wel as appropriate functional exercise after tendon repair. The integrated use of these means can be done to prevent the occurrence of postoperative tendon adhesions.