Risk factors of urinary sepsis after mPCNL in patients with negative preoperative urine culture / 现代泌尿外科杂志

【Objective】 To determine the risk factors of urinary sepsis secondary to minimally invasive percutaneous nephrolithotomy (mPCNL) in patients with negative preoperative urine culture (UC). 【Methods】 A total of 274 patients with negative preoperative UC treated with mPCNL during Jan.2016 and Jun. 2021 were retrospectively analyzed. The incidence of urinary sepsis was observed, and the general data of patients with or without urinary sepsis after mPCNL were compared. logistic regression model was used to analyze the risk factors of urinary sepsis after mPCNL. 【Results】 Urinary sepsis occurred in 11 cases (4.01%). Univariate analysis showed that urinary sepsis was associated with gender, body mass index, stone load, diabetes, urine WBC ≥2+, urinary nitrite, procalcitonin, and operation time. Multivariate logistic regression analysis showed that the independent risk factors of urinary sepsis after mPCNL included diabetes (OR=2.34, 95%CI=1.051-5.43, P=0.037), stone load (OR=7.51, 95%CI=3.17-7.38, P=0.045), urine WBC≥2+ (OR=4.57, 95%CI=6.75-11.38, P=0.032), urinary nitrite positive (OR=6.45, 95%CI=0.93-26.87, P=0.028) and operation time≥120 min (OR=3.53, 95%CI=1.41-8.85, P=0.042). 【Conclusion】 Diabetes, stone load, urinary WBC ≥2+, positive urinary nitrite and operation time ≥120 minutes are the risk factors of urinary sepsis after mPCNL in patients with negative urine culture.

Construction and application of a field-scale rapid prediction system for wind field and pollutant dispersion / 中国辐射卫生

Objective To construct a rapid prediction system to improve the accuracy and efficiency of evaluation of the consequences of nuclear accidents at a field scale. Methods Base on a diagnostic wind field model and Lagrangian particle diffusion, we established a rapid prediction method for wind field and pollutant dispersion around complex underlying surfaces within a field scale, in a way of visual discrimination of buildings and vegetation distribution. With data simulation and the use of a real urban field example, the simulated results were compared with wind tunnel test measurements and computational fluid dynamics results to study the influence of complex underlying surfaces on wind field and pollutant transport in the region. Results The rapid prediction system could clearly simulate the high-resolution wind field and pollutant concentration distribution of the region in about five minutes. It could interface with geographic information software and couple with a mesoscale weather prediction model. In terms of accuracy, the system performed well in wind field simulation, with the fractional deviations of wind speed and wind direction being 0.33 and −0.08, respectively. Concentration field simulation was greatly affected by the wind field, and the ratios of simulated concentrations to observed concentrations were between 0.05 and 3.4, except for a few low concentration points. Conclusion The rapid prediction system can effectively simulate the distribution characteristics of the flow field and improve calculation efficiency when ensuring calculation accuracy, which provides an important reference for emergency response to nuclear accidents.

Prevalence of colorectal cancer in 2020: a comparative analysis between China and the world / 中华肿瘤杂志

Objective: To demonstrate the disease burden and epidemiological characteristics of colorectal cancer in different regions by analyzing the incidence and mortality data in China and worldwide in 2020. Methods: Estimation of the incidence and mortality data of colorectal cancer were obtained from the GLOBOCAN 2020 database. The incidence, death, age standardized incidence rate (ASIR) and age standardized mortality rate (ASMR) of colorectal cancer in China and 20 regions in the world were compared. The correlation between the Human Development Index (HDI) and ASIR/ASMR was analyzed. Results: In 2020, the number of new cases of colorectal cancer in the world reached 1 931 600, and the number of deaths reached 935 200. The incidence and mortality in all regions of the world continued to rise in the age group above 50 years old. The morbidity and mortality in male were higher than those in female. East Asia ranked the highest number of incidence cases and deaths in the world, which were 740 000 and 360 100 respectively. There were significant differences in incidence and mortality among regions in the world. The highest ASIR and ASMR were observed in Northern Europe (33.61/100 000) and Eastern Europe (14.53/100 000), whereas the lowest ASIR and ASMR were both observed in South-Central Asia (5.46/100 000 and 3.16/100 000). HDI had significant exponential relationship with ASIR (r(2)=0.59, P<0.001) and ASMR (r(2)=0.38, P<0.001). There were 555 500 new cases and 286 200 death cases of colorectal cancer in China, accounting for about 30% of the world and more than 75% of East Asia. The ASIR of China was 24.07/100 000, ranking at the medium level, while the ASMR was 12.07/100 000, ranking at the high level of world. Conclusion: The incidence and mortality of colorectal cancer are highly correlated with HDI. China is one of the countries with the heaviest disease burden of colorectal cancer in the world.

Clinical study on the subchondral screw compression technique assisted reduction of residual or secondary collapse of lateral tibial plateau / 中国修复重建外科杂志

OBJECTIVE@#To explore the reduction and support effect of the subchondral screw compression technique for residual or secondary collapse of the lateral tibial plateau during operation.@*METHODS@#Between January 2020 and June 2021, 11 patients with residual or secondary collapse of the lateral tibial plateau during operation were treated with the subchondral screw compression technique. There were 6 males and 5 females, aged 52.3 years old (range, 27-64 years). The fractures were caused by traffic accident in 10 cases and falling from height in 1 case and located at the left knee in 6 cases and the right knee in 5 cases. According to Schatzker classification, there were 5 cases of type Ⅱ fractures, 4 cases of type Ⅲ fractures, and 2 cases of type Ⅴfractures. According to the three columns classification, there were 5 cases of lateral column, 4 cases of lateral column and posterior column, and 2 cases of three columns. The time from injury to operation was 4.5 days (range, 3-7 days). During the follow-up, X-ray films were obtained and the Rasmussen standard was used to evaluate the quality of fracture reduction, meanwhile fracture healing was observed. The medial proximal tibial angle (mPTA), posterior tibial slope angle (pTSA), and articular surface collapse were measured at immediate and 12 months after operation. The knee joint range of motion was evaluated at last follow-up, and the knee joint function was evaluated using the Hospital for Special Surgery (HSS) score.@*RESULTS@#All operations were successfully completed, with a mean operation time of 71.4 minutes (range, 55-120 minutes), and a mean hospital stay of 8.0 days (range, 5-13 days). The incisions all healed by first intention, without complications such as infection, flap necrosis, or vascular and nerve injury. All patients were followed up 16.5 months on average (range, 12-24 months). X-ray films showed that the fracture reduction score was 14-18 (mean, 16.7) according to Rasmussen score criteria; and 5 cases were rated as excellent and 6 as good. All fractures healed clinically with a mean clinical healing time of 14.9 weeks (range, 12-16 weeks), and there was no complications such as plate or screw loosening. At 12 months after operation, the mPTA and pTSA were (87.5±1.7)° and (6.2±3.1)°, respectively; there was no significant difference when compared to the values at immediate after operation [(87.6±1.8)° and (6.5±3.1)°] ( P>0.05). The articular surface of the tibial plateaus was effectively supported, and it collapsed again by 0-1.0 mm at 12 months, with an average of 0.4 mm. At last follow-up, the knee joint range of motion was 115°-135° (mean, 126.8°) and the HSS score for knee joint function was 87-98 (mean, 93.9). Five patients underwent secondary operation to remove the internal fixator at 12-18 months after operation.@*CONCLUSION@#The subchondral screw compression technique is helpful for the reduction of residual or secondary collapse of the lateral tibial plateau during operation, and can provide good support for osteochondral blocks.

Effect of acrylic bone cement mixed with calcium sulfate combined with percutaneous kyphoplasty in the treatment of osteoporotic fractures / 中国骨伤

OBJECTIVE@#To investigate the clinical efficacy of acrylic cement (PMMA) mixed with calcium sulfate combined with percutaneous kyphoplasty (PKP) in the treatment of osteoporotic fracture (OVCF).@*METHODS@#The clinical data of 191 patients with OVCF treated with PKP from January 2020 to March 2021 were retrospectively analyzed. Among them, 82 patients with 94 vertebral bodies were treated with PMMA mixed with calcium sulfate as the observation group, and 109 patients with 125 vertebral bodies were treated with pure PMMA as the control group. Among the 82 patients in the observation group, there were 16 males and 66 females, with a mean age of (75.35±11.22) years old, including 36 thoracic vertebrae and 58 lumbar vertebrae. In the control group, there were 109 patients, 22 males and 87 females, with an average age of (74.51±9.21) years old, including 63 thoracic vertebrae and 62 lumbar vertebrae. The visual analog scale (VAS) before operation and 1 day, 3 months and 1 year after operation were calculated. The Oswestry disability index (ODI), Cobb's angle, vertebral body height and the probability of postoperative bone cement leakage were used to analyze the efficacy of the two groups.@*RESULTS@#All the patients were followed up for more than one year. Compared with the control group, there was no significant difference in operation time, bleeding volume and bone cement injection volume between the two groups(P>0.05), while the leakage rate of bone cement was significantly lower in the observation group (P<0.05). In addition, there was no significant difference in VAS, ODI, Cobb angle, and vertebral body height between the two groups before operation, and 1 day, 3 months, and 1 year after operation (P>0.05), but each index was improved compared with that before operation (P<0.05).@*CONCLUSION@#PMMA mixed with calcium sulfate has equivalent efficacy in treating OVCF than PMMA alone, but can effectively reduce the probability of cement leakage.

Correlation between preoperative MRI measurement of cross-sectional area of hamstring tendon and graft in anterior cruciate ligament reconstruction / 中国骨伤

OBJECTIVE@#To study the corretation between the cross-sectional area of hamstring tenden measured by MRI and gragt in anterior cruciate ligament rexonstruction.@*METHODS@#MRI data of 50 patients who planned to undergo anterior cruciate ligament reconstruction from November 2021 to March 2022 were collected, including 32 males and 18 females, aged from 19 to 48 years old with an average of(31.1±8.7) years. Before the operation, the semitendinosus and gracilis tendons were measured and recorded by MRI, and then the anterior cruciate ligament was reconstructed under arthroscope. During the operation, gracilis and semitendinosus tendons were taken to prepare the final tendon to be transplanted, and the diameter of the prepared final graft was measured during the operation. Finally, the data were analyzed by statistical software.@*RESULTS@#The cross sectional areas of semitendinosus tendon, gracilis tendon, semitendinosus tendon and gracilis tendon measured by MRI were significantly and positively correlated with the diameter of grafts required in anterior cruciate ligament surgery, the r values were 0.858, 0.728, 0.842(P<0.001), respectively. The area under curre (AUC), sensitivity, and specificity of the sum of the cross sectional areas of semitendinosus tendon and gracilis tendon were 0.925, 90.48%, and 85.71%, respectively.@*CONCLUSION@#In patients undergoing anterior cruciate ligament reconstruction, preoperative MRI measurement has a strong statistical correlation with the diameter of hamstring muscle transplantation during operation. The sum of the cross sectional areas of semitendinosus tendon and gracilis tendon has a high predictive value for the diameter of grafts during anterior cruciate ligament reconstruction, and can predict the size of grafts during operation.

Clinical application of nutritional risk scale in pediatric cancer patients:a review / 中国实用护理杂志

The basic information and clinical application of nutritional risk scales for children with cancer were reviewed, and the strengths and weaknesses of each scale were analyzed. After systematic search and reading, the scales with more clinical applications included universal scales: Pediatric Malnutrition Assessment Screening Tool (STAMP), Nutritional Risk and Stunting Malnutrition Screening Tool (STRONG kids), Pediatric Yorkhill Malnutrition Score (PYMS), Pediatric Subjective Global Nutritional Risk Assessment (SGNA); specific scales: Nutritional Screening Tool for Childhood Cancer (SCAN), Nutritional Risk Screening for Childhood Cancer (NRS-PC). In order to effectively manage the nutritional risk of pediatric cancer patients, we should selectively use and further actively Chinese or develop specific nutritional risk measurement tools adapted to our national conditions.

Cannabidiol prevents depressive-like behaviors through the modulation of neural stem cell differentiation / 医学前沿

Chronic stress impairs radial neural stem cell (rNSC) differentiation and adult hippocampal neurogenesis (AHN), whereas promoting AHN can increase stress resilience against depression. Therefore, investigating the mechanism of neural differentiation and AHN is of great importance for developing antidepressant drugs. The nonpsychoactive phytocannabinoid cannabidiol (CBD) has been shown to be effective against depression. However, whether CBD can modulate rNSC differentiation and hippocampal neurogenesis is unknown. Here, by using the chronic restraint stress (CRS) mouse model, we showed that hippocampal rNSCs mostly differentiated into astrocytes under stress conditions. Moreover, transcriptome analysis revealed that the FoxO signaling pathway was involved in the regulation of this process. The administration of CBD rescued depressive-like symptoms in CRS mice and prevented rNSCs overactivation and differentiation into astrocyte, which was partly mediated by the modulation of the FoxO signaling pathway. These results revealed a previously unknown neural mechanism for neural differentiation and AHN in depression and provided mechanistic insights into the antidepressive effects of CBD.

Preliminary study on the prognostic value of baseline CT in patients with metastatic far-advanced gastric cancer / 中华放射学杂志

Objective:To investigate the prognosis value of baseline contrast-enhanced CT in predicting progression-free survival (PFS) and overall survival (OS) for clinically diagnosed as metastatic far-advanced gastric cancer patients.Methods:Between January 2019 and May 2020, 85 pathologically confirmed gastric adenocarcinoma patients with peritoneal or hepatic metastasis at Shanghai Ruijin Hospital with complete preoperative clinical, image and follow-up data were enrolled in this retrospective study. Clinical factors included performance status (PS) score, tumor location, and tumor serological indicators. Imaging factors included the longest diameter and maximum cross-sectional area of the tumor, CT value, enhancement uniformity, CT extramural venous invasion (ctEMVI), the largest short diameter of the metastatic lymph nodes, confluent lymph nodes, lymph nodes necrosis, fused bulk lymph nodes, the maximum cross-sectional area and CT value of the liver metastases, peritoneal metastasis score, longest diameter of nodules with peritoneal metastasis. Kaplan-Meier survival curve and log-rank test were used to analyze the prognostic differences between groups. Univariate and multivariate Cox proportional hazards regression models were used to identify independent risk factors for PFS and OS.Results:There were significant differences in the maximum cross-sectional area of the tumor, non-contrast CT value, delayed-phase CT value, and delayed-phase CT ratio value between the high- and low-risk groups in PFS ( P<0.05). There were significant differences between the high- and low-risk groups with the maximum cross-sectional area of the tumor in PFS and OS ( P<0.05). In the univariate analysis, the maximum cross-sectional area of tumor, plain-scan CT value, delayed-phase CT value, delayed-phase CT ratio value and the largest short diameter of metastatic lymph nodes were risk factors for PFS ( P<0.05). PS score, CA724, maximum cross-sectional area of the tumor, maximum cross-sectional area of liver metastases, and peritoneal metastasis score were shown as risk factors for OS ( P<0.05). In the multivariate analysis, the maximum cross-sectional area of the tumor and non-contrast CT value were independent risk factors for PFS (HR=0.41, 2.50, P<0.05, 0.006). PS score, CA724 and peritoneal metastasis score were independent risk factors for OS (HR=46.78, 6.26, 92.92, P=0.026, 0.009, 0.007). Conclusions:Tumor size, CT attenuations, and peritoneal metastasis score on baseline CT can be used as independent risk factors for survival in patients with far-advanced gastric cancer with peritoneal or hepatic metastasis. Baseline CT is potentially useful in prediction of the survival status for patients with metastatic far-advanced gastric cancer.

Ilizarov technique combined with vancomycin bone cement for treatment of posttraumatic tibial bone infection combined with bone and soft tissue defects / 中华创伤杂志

Objective:To investigate the effect of Ilizarov bone transport technique combined with vancomycin bone cement for treatment of posttraumatic tibial bone infection combined with bone and soft tissue defects.Methods:A retrospective case series study was performed on 11 patients with posttraumatic tibial bone infection combined with bone and soft tissue defects admitted to First Affiliated Hospital of Anhui Medical University from June 2016 to June 2019.There were 7 males and 4 females, with age of 21-56 years [(41.5±12.1)years]. After debridement, the length of bone defect was 4-13.2 cm [(8.1±2.6)cm], and the area of soft tissue defect was 6.5-23.4 cm 2 [(16.2±4.7)cm 2]. All patients were treated firstly with debridement of bone infection and vancomycin loaded bone cement pad filling, followed by Ilizarov technique to repair bone and soft tissue defects. The soft tissue docking time, fracture docking time, external fixation time and external fixation index were recorded. At the last follow-up, Johner wruhs score was used to evaluate the curative effect and American Orthopedic Foot and Ankle Society (AOFAS) ankle hindfoot score to evaluate the ankle joint function. The postoperative complications were observed. Results:All patients were followed up for 17-23 months [(17.9±4.5)months]. The soft tissue docking time was 48-155 days [(101.7±29.0)days] and fracture docking time was 55-167 days [(111.6±29.5)days]. The external fixation time was 154-450 days [(322.9±86.3)days] with an external fixation index of 31.1-61.5 cm/day [(40.8+ 7.5)cm/day]. At the last follow-up, the results were excellent in 2 patients, good in 4 and fair in 5 based on Johner-Wruhs score. At the last follow-up, the AOFAS ankle hindfoot score was 61-94 points [(76.6±12.7)points], with excellent results in 3 patients, good in 2 and fair in 6. Four patients were treated with secondary operation, and two of them bad docking site nonunion which healed after secondary bone grafting. No free or local transposition flap repair was performed in regardless of soft tissue defect. During the follow-up, there were no complications such as fever, wound weeping, soft tissue necrosis or neurovascular injury.Conclusion:For posttraumatic tibial bone infection combined with bone and soft tissue defects, the Ilizarov bone transport technique combined with vancomycin-loaded bone cement has advantage of shorter operation time, trauma and complications, and can achieve bone lengthening and soft tissue healing simultaneously.

Comparison RNA with DNA detection assay in diagnosis of Mycoplasma pneumoniae infection / 中华实用儿科临床杂志

Objective:To evaluate the rapid nucleic acid amplification detection of Mycoplasma pneumoniae (MP)-DNA and MP-RNA in the diagnosis of MP infection and therapeutic values in children. Methods:Patients who were diagnosed with pneumonia were enrolled from the Department of Respiration, Children′s Hospital of Capital Institute of Pediatrics from January 2018 to December 2018.Specimens were detected using the MP and Macrolide-Resistant isolates Diagnostic Kit (PCR Fluorescence Probing, Jiangsu Mole Bioscience Co., Ltd.) and MP Diagnostic Kit (Isothermal RNA amplification, Shanghai Rendu Biotechnology Co., Ltd.).Results:Among them, 42.1%(840 cases) of the 1 994 cases were positive for MP-DNA, and the macrolide associated gene mutations were detected in 96.0% (806/840 cases) of them, while 33.9% (551 cases) of 1 624 cases were positive for MP-RNA.Seven hundred and fifty-eight specimens were simultaneously detected by adopting MP-DNA and MP-RNA, and the positive rate was 43.1% (327/758 cases) and 36.7% (278/758 cases), accordingly, which were inconsistent (Kappa=0.604) in 613 (80.9%, 613/758 cases) cases, with significant differences ( χ2=6.60, P=0.01). Part of the specimens were rechecked with the interval of 7 days: MP-RNA was negative in 70.1% (47/67 cases) specimens and MP-DNA was negative in 36.1% (22/91 cases) specimens ( χ2=33.20, P<0.01). Conclusions:The positive detection rate of MP was at a high level in 2018, in Beijing, China.The results of MP-DNA and MP-RNA are consistant.But RNA detection can help to diagnose MP in the early stage, and monitor the survival of MP and its efficiency.

Implementation strategy of enhanced recovery after surgery in perioperative management of gastric cancer / 中华胃肠外科杂志

Enhanced recovery after surgery (ERAS) has deeply influenced the clinical practice of surgery, anesthesia and nursing since its inception in 1997. The successful implementation of perioperative ERAS in gastric cancer depends on continually boosting the awareness and acceptance of ERAS among medical staff, carrying out multidisciplinary collaboration, improving patients' compliance and combining key items to the clinical pathways. Future efforts should be made to explore the most appropriate implementation strategy of perioperative ERAS in gastric cancer.

Cerebellar ataxia, areflexia, pes cavus, optic atrophy and sensorineural hearing loss syndrome: a case report and literature review / 中华神经科杂志

Objective To summarize the clinical characteristics of a patient with cerebellar ataxia,areflexia,pes cavus,optic atrophy and sensorineural hearing loss (CAPOS) syndrome,followed by relative literature review.Methods The medical history,physical examination and results of relative auxiliary examinations were collected from a CAPOS syndrome patient,who was definitely diagnosed by gene detection.Results The patient was a 20-year-old male,complaining of poor coordination for 19 years,impaired vision for 15 years and hearing loss for 13 years.When he was eleven months old,weakness of four limbs happened after diarrhea but recovered spontaneously a few days later.Then his poor coordination was discovered.His vision has decreased progressively since the age of five and he began to suffer from bilateral hearing loss after fever at the age of seven.Anti-infectious and immunoregulatory treatment was ineffective at that time.Physical examination showed that bilateral visual acuity decreased.Transient horizontal gaze-evoked nystagmus and bilateral hearing loss were detected.Obvious shaking was observed with closed eyes and toes together.Finger-to-nose,finger tracking,heel-knee-tibia and alternate motion tests were slightly inaccurate.Deep tendon reflexes disappeared and no pes cavus was observed.Pure tone audiometry revealed bilateral sensorineural hearing loss.Cranial magnetic resonance imaging indicated bilateral optic atrophy.ATP1A3 gene detection in the patient showed c.2452G＞A (p.Glu818Lys) heterozygous mutation while his parents were detected no such mutation in the same locus.Conclusions As for young patients who suffer from acute cerebellar ataxia after fever,disappeared tendon reflexes,atrophy of optic nerves or sensorineural hearing loss,they should be alerted to CAPOS syndrome when immunomodulating or anti-inflammatory therapy has been proved to be useless.Positive family history and ATP1A3 gene mutation would be beneficial to definite diagnosis.

Cerebellar ataxia, areflexia, pes cavus, optic atrophy and sensorineural hearing loss syndrome: a case report and literature review / 中华神经科杂志

Objective@#To summarize the clinical characteristics of a patient with cerebellar ataxia, areflexia, pes cavus, optic atrophy and sensorineural hearing loss (CAPOS) syndrome, followed by relative literature review.@*Methods@#The medical history, physical examination and results of relative auxiliary examinations were collected from a CAPOS syndrome patient, who was definitely diagnosed by gene detection.@*Results@#The patient was a 20-year-old male, complaining of poor coordination for 19 years, impaired vision for 15 years and hearing loss for 13 years. When he was eleven months old, weakness of four limbs happened after diarrhea but recovered spontaneously a few days later. Then his poor coordination was discovered. His vision has decreased progressively since the age of five and he began to suffer from bilateral hearing loss after fever at the age of seven. Anti-infectious and immunoregulatory treatment was ineffective at that time. Physical examination showed that bilateral visual acuity decreased. Transient horizontal gaze-evoked nystagmus and bilateral hearing loss were detected. Obvious shaking was observed with closed eyes and toes together. Finger-to-nose, finger tracking, heel-knee-tibia and alternate motion tests were slightly inaccurate. Deep tendon reflexes disappeared and no pes cavus was observed. Pure tone audiometry revealed bilateral sensorineural hearing loss. Cranial magnetic resonance imaging indicated bilateral optic atrophy. ATP1A3 gene detection in the patient showed c. 2452G>A (p. Glu818Lys) heterozygous mutation while his parents were detected no such mutation in the same locus.@*Conclusions@#As for young patients who suffer from acute cerebellar ataxia after fever, disappeared tendon reflexes, atrophy of optic nerves or sensorineural hearing loss, they should be alerted to CAPOS syndrome when immunomodulating or anti-inflammatory therapy has been proved to be useless. Positive family history and ATP1A3 gene mutation would be beneficial to definite diagnosis.

Out-of-hospital management strategies for gastric cancer patients during the COVID-19 outbreak / 中华消化外科杂志

Since the outbreak of Corona Virus Disease 2019 occurred in December 2019, the reduction of population mobility has curbed the spread of the epidemic to some extent but also prolonged the waiting time for the treatment of patients with gastric cancer. Based on fully understanding the different staging characteristics of gastric cancer, clinical departments should develop reasonable out-of-hospital management strategies. On one hand, reasonable communication channels should be established to allow patients to receive adequate guidance out of the hospital. On the other hand, shared decisions with patients should be made to adjust treatment strategies, and education on viral prevention should be implemented to minimize the impact of the epidemic on tumor treatment.

Preparation and Properties of Rapamycin Sustained-release Film / 中山大学学报(医学科学版)

@#【Objective】To prepare rapamycin（RAPA）sustained-release film and to evaluate its dissolution.【Methods】RAPA sustained- release film was created by using polymer polyactioglyconic acid （PLGA），copolymer of polyactic acid（PLA）and polyglycolic acid（PGA）. Drug content of the sustained-release film was determined using specificity test，recovery，relative standard deviation（RSD）and stability test. Then，the dissolution of the sustained- release film was analyzed.【Results】The concentration of RAPA had a linear relationship with peak area，which ranged between 0.408 μg/mL and 40.8 μg/mL through the standard curve. The specificity test of the drug content determination indicated the excipient of the film and the solution with 0.3% sodium dodecyl sulfate（SDS）did not affect in determining the RAPA content. The recovery and RSD were excellent through drug content determination in blank films，which had three different levels of RAPA concentrations. The mean RAPA content of the sustained-release films was（112.6±10.1）μg（RSD 8.99%）through the drug content determination of the films，and the stability of RAPA with 0.3% SDS was good within 15 days. In addition，dissolution test of the sustained- release film indicated that the amount of drug release reached a high level and sustained up to 15 days.【Conclusion】 The RAPA sustained-release film with certain behavioral characteristic parameters had a stable drug content and favorable sustained-release property，and it may have certain application potential in anti-proliferation after glaucoma filtering surgery.

Biomechanical study on the treatment of intertrochanteric fracture of A3.3 type with medial sustainable nail and proximal femoral anti-rotation nail / 中国骨伤

OBJECTIVE@#A3 intertrochanteric fracture is an extremely unstable fracture, which is often treated with intramedullary nail, but the implant failure is common due to the posterior medial fragment cannot be reconstructed. A new medial sustainable nail (MSN-Ⅱ) which can reconstruct the femoral medial support by sustainable screw was introduced in this study. The mechanical effect was verified by biomechanical experiment.@*METHODS@#The loss medial support model of intertrochanteric fracture (A3) was made by artificial Sawbones model, fixed with MSN-Ⅱ and PFNA-Ⅱ, underwent axial loading and axial failure tests. The axial stiffness, yield load, displacement of head-neck fragment and torsional angle of fracture site of these nails were recorded and compared for biomechanical differences. The effect of early reconstruction of medial support with MSN-Ⅱ was determined.@*RESULTS@#The axial stiffness, yield load, the displacement of head and neck fragment when the axial load was 1 800 N and torsional angle of the fracture site after the axial failure test of MSN-Ⅱ were (222.76 ±62.46) N /mm, (4 241.71 ±847.42) N, (11.51 ±0.62) mm, (1.71 ±0.10)° respectively, while the PFNA -Ⅱ was (184.58±40.59) N /mm, (3 058.76±379.63) N, (16.15±1.36) mm, (2.52±0.26)°respectively. The difference between the two groups was statistically significant.@*CONCLUSION@#The axial stiffness of MSN-Ⅱ is better than that of PFNA-Ⅱ. The MSN-Ⅱ can bear more loads when fixed A3.3 intertrochanteric fracture and has greater axial and rotational stability. It is an effective means to reconstruct the medial support of A3 intertrochanteric fracture.

Effect of Indirubin and Sheng-Xue-Xiao-Ban Capsule (SXXBC) on Promoting Peripheral Platelet in ITP Model Mice / 中国实验血液学杂志

OBJECTIVE@#To compare the effect of Sheng-Xue-Xiao-Ban Capsule (SXXBC) and indirubin to the peripheral platelets of the Idiopathic thrombocytopenic purpura (ITP) model mouse.@*METHODS@#The ITP mouse model was established by the method of passive immunization. SXXBC and indirubin were used for intervention treatment. Then the hemorrhagic phenomena of ITP mice were observed and the numbers of peripheral platelets, hemoglobin and white blood cells, bone marrow megakaryocytes and their classification and coagulation function were detected and compared.@*RESULTS@#The improvement rate of hemorrhage in SXXBC group was 40% for small dose, 60% for medium dose and 80% for high dose, while the improvement rate of hemorrhage in indirubin group was 30% for small dose, 50% for medium dose and 60% for high dose. There was no statistically significant difference in the improvement rate of hemorrhage between the two groups (P＞0.05). Compared with the model control group, PLT and Hb increased in different doses of SXXBC and indirubin group 4th-8th day after drug intervention (P＜0.05, 0.01). However, there was no significant difference between the different doses of SXXBC group and indirubin group (P＞0.05). Compared with the model control group, the WBC in each group was significantly lower (P＜0.05, 0.01) on the 4th-8th day after drug intervention; However, there was no statistical significance between the two groups of SXXBC and indirubin (P＞0.05). Compared with the model control group, the total number of megakaryocytes in each treatment group were decreased (P＜0.05, P＜0.01), in which the number of primary megakaryocytes in the large and medium dose groups of SXXBC and indirubin were decreased (P＜0.05, 0.01), and the number of juvenile megakaryocytes in the large dose group of SXXBC and indirubin were also decreased (P＜0.05). The number of granular megakaryocytes were decreased in each intervention groups (P＜0.05, 0.01), and the number of thromocytogenic megakaryocyte was increased in the high and medium dose groups of SXXBC and indirubin (P＜0.01). The time of prothrombin was shortened in the high and medium dose groups of SXXBC and indirubin (P＜0.05), and the fibrinogen (FIB) content in the high and medium dose groups of SXXBC was close to that of the normal control group.@*CONCLUSION@#Both of the SXXBC and the indirubin standard all show good hemostatic effects. Indirubin shows a positive effect on increasing the peripheral platelet and hemoglobin in ITP model mice, regulating the immune response, reducing the total number of bone marrow megakaryocytes, increasing the thromocytogenic megakaryocyte, and increasing coagulation function.

Analysis and comparison of the clinical features and prognosis between extra - gastrointestinal stromal tumors and duodenal gastrointestinal stromal tumors / 中华胃肠外科杂志

Objective@#To investigate the differences of clinicopathological features, diagnosis, treatment and prognosis between patients with extra-gastrointestinal stromal tumors (EGIST) and duodenal gastrointestinal stromal tumors (DGIST).@*Methods@#A retrospective case - control study was performed. Case inclusion criteria: (1) tumor confirmed by histology and pathology; (2) primary tumor locating in the extra - gastrointestinal tract or duodenum; (3) without other synchronous tumors; (4) complete clinical and pathological data. Clinical data of 20 EGIST patients and 32 DGIST patients from March 2011 to September 2016 at Department of Gastrointestinal Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine were retrospectively collected and analyzed. The observational parameters included clinicopathological characteristics, treatment and prognosis conditions. Continuous data of abnormal distribution were expressed as median (range) and compared using the Mann-Whitney U-test. Survival curves were drawn by the Kaplan-Meier method and compared with the Log-rank test.@*Results@#Of the 20 EGIST patients, 8 were males and 12 were females with age of 61.0 (30.0 to 86.0) years and of the 32 DGIST patients, 12 were males and 20 were females with age of 55.5 (27.0 to 70.0) years. Compared with DGIST patients, EGIST patients were older (U=188.000, P=0.012], had larger tumor size [10.0 (3.0 to 29.0) cm vs. 4.0 (1.5 to 10.0) cm, U=98.500, P<0.001] and higher ratio of high risk classification [85.0% (17/20) vs. 12.5% (4/32), χ2=26.870, P<0.001]. Among the 20 EGIST patients, 5 were diagnosed with distal metastasis and received imatinib (400 mg/d), and the other 15 patients underwent radical resection who were included in survival analysis. All the 32 DGIST patients underwent radical resection. The median follow-up of whole group was 43 (14 to 76) months. The 3-year recurrence/metastasis-free survival rate of 15 cases undergoing radical resection in the EGIST group was 85.6%, which was lower than that of the DGIST group (88.6%), and the difference was not statistically significant (P=0.745). There was no significant difference in the 3-year overall survival rate between the EGIST group (92.9%) and the DGIST group (100%) (P=0.271).@*Conclusions@#As compared to DGIST, EGIST mostly occurs in those with older age, larger tumor size and higher risk grade. The prognosis of EGIST patients after radical resection is similar to that of DGIST patients.

Protective Effect of Phenolic Compound of Osmundae Rhizoma on Systemic Inflammatory Response Syndrome in Mice / 中国实验方剂学杂志

Objective: To investigate the protective effect of phenolic compounds 4-hydroxybenzylideneacetone and (HBAc)3,4-dihydroxybenzylideneacetone (DHBAc) of Osmundae Rhizoma on the systemic inflammatory response syndrome (SIRS) in mice by establishing the mice model of SIRS.Method: BALB/c mice were randomly divided into the normal group,the SIRS model group and the different doses of HBAC and DHBAc group (25,50,100 μg·kg-3).Lipopolysaccharides (LPS) was injected intraperitoneally after 7 days of prophylactic administration.After 5 hours of modeling,the anus temperature,respiratory rate,the number of white blood cell (WBC) and platelets (PLT),WBC classification,glycolipid metabolism,inflammatory factor and signal transducing phosphorylated protein of lung were measured.Result: Intraperitoneal injection with LPS (6 mg·kg-1) in mice can significantly reduce the respiratory rate (PPPPPβ(PPPPPPPPPβ(PConclusion: The SIRS model can be established through intraperitoneal injection of LPS.HBAc and DHBAc have protective effects on endotoxin-induced SIRS in mice,and may exert anti-inflammatory effects through IκB and c-JUN pathways.