Objective:To explore the clinical effectiveness of a self-designed robot reduction system for femoral intertrochanteric fractures.Methods:A retrospective study was conducted to analyze the 57 patients with intertrochanteric fracture who had been treated at Department of Orthopedics, The Fourth Affiliated Central Hospital of Tianjin Medical University from June 2022 to February 2023. The patients were divided into a robot group (using the self-designed robot reduction system to assist intramedullary nailing) and a traction bed group (using a traction bed to assist intramedullary nailing) based on their fracture reduction method. The robot group: 31 patients, 11 males and 20 females, with an age of (78.7±9.3) years; 16 left and 15 right sides; 17 cases of type 31-A1, 12 cases of type 31-A2 and 2 cases of type 31-A3 by the AO/OTA classification. The traction bed group: 26 patients, 12 males and 14 females, with an age of (78.7±7.7) years; 13 left and 13 right sides; 16 cases of type 31-A1, 9 cases of type 31-A2 and 1 cases of type 31-A3 by the AO/OTA classification. The 2 groups were compared in terms of reduction and operation time, intraoperative blood loss, fluoroscopy frequency, reduction quality, and VAS and Harris score at preoperation, 1 week and 6 months postoperation.Results:The 2 groups were comparable due to insignificant differences in their preoperative general data ( P>0.05). The robot group was significantly better than the traction bed group in reduction time [(4.4±2.2) min versus (9.4±3.2) min], operation time [(29.0±13.5) min versus (49.3±13.3) min], intraoperative blood loss [(76.5±30.5) mL versus (115.0±38.4) mL], fluoroscopy frequency [(10.2±2.6) times versus (14.8±3.2) times], and good/excellent rate of reduction [80.6% (25/31) versus 50.0% (13/26)] ( P<0.05). All patients were followed up for (6.8±0.3) months. Respectively, the VAS scores at preoperation and 6 months postoperation was (6.2±1.3) and (2.4±0.8) points for the robot group, and (6.3±1.3) and (2.7±0.8) points for the traction bed group, showing no statistically significant differences between the 2 groups ( P>0.05). However, the VAS score was (3.3±1.2) points for the robotic group and (4.8±1.5) points for the traction bed group at 1 week postoperation, showing a statistically significant difference between the 2 groups ( P<0.001). Respectively, the Harris scores at preoperation and 6 months postoperation were (35.3±3.0) and (88.7±3.4) points for the robot group, and (35.6±2.9) and (87.2±3.5) points for the traction bed group, showing no statistically significant differences between the 2 groups ( P>0.05). However, the Harris score was (57.3±3.7) points for the robotic group and (46.7±2.8) points for the traction bed group at 1 week postoperation, showing a statistically significant difference between the 2 groups ( P<0.05). The patient satisfaction rates in the robot and traction bed groups were 96.8% (30/31) and 92.3% (24/26), respectively, showing no statistically significant difference ( P>0.05). Conclusion:Our self-designed robot reduction for femoral intertrochanteric fractures can effectively shorten reduction and operation time, reduce bleeding and fluoroscopy frequency, and enhance anatomical reduction.

Objective:To investigate the clinical and pathological characteristics of primary mucinous gland lesions of the fallopian tubes.Methods:The clinical data, pathomorphological characteristics and immunophenotype of 14 cases of primary mucinous gland lesions of the fallopian tube diagnosed at Obstetrics and Gynecology Hospital of Fudan University from 2015 to 2023 were analyzed retrospectively. In addition, a comprehensive review of relevant literature was conducted.Results:The age of 14 patients ranged from 53 to 83 years, with an average of 65 years. Among them, 13 cases exhibited unilateral involvement while one case showed bilateral presentation. Nine cases were mucinous metaplasia of the fallopian tube, four cases were invasive mucinous adenocarcinoma and one case was mucinous carcinoma in situ. Morphologically, mucinous metaplasia of the fallopian tube was focal, with or without inflammation. The cells of mucinous adenocarcinoma or mucinous carcinoma in situ exhibited characteristics indicative of gastrointestinal differentiation. Immunohistochemical analysis revealed diffuse positive expression of CK7, and negative expression of SATB2. CDX2 demonstrated positive staining in two cases. One case exhibited diffuse and strongly positive mutant expression of p53, whereas the remaining cases displayed wild-type expression. MUC6 showed diffuse or focally positive staining in mucinous gland lesions characterized by gastric differentiation. Some cases of mucinous adenocarcinoma of fallopian tube were subject to AB-PAS staining, resulting in red to purple cytoplasmic staining.Conclusions:Primary mucinous lesions of the fallopian tube are exceedingly uncommon. All cases of mucinous adenocarcinoma of fallopian tubes in this study exhibit the morphology and immunohistochemical characteristics of gastrointestinal differentiation. Mucinous metaplasia of the fallopian tube is a benign lesion of incidental finding, which is closely related to inflammation or gastric differentiation. Mucinous lesions of cervix, ovary and digestive tract are excluded in all patients, confirming the independent existence of mucinous lesions within fallopian tubes.

Objective : To explore the effects of Blonanserin on hippocampal neurons damage and PI3K / AKT / GSK3 β signaling pathways in rats with MK-801 induced schizophrenia． Methods : The schizophrenia models were induced by one-time intraperitoneal injection of MK-801．A total of 48 SD rats were randomly divided into normal group，model group，Blonanserin group ( 1 mg / kg Blonanserin) and risperidone group (0. 54 mg / kg risperidone) ， with 12 cases in each group．The behaviors of rats were observed by stereotyped behavior assay，open field test and Morris water maze．The pathological damage of hippocampus was observed by HE staining，which was scored．The levels of serum glucose-lipid metabolism indexes were detected．The mRNA and proteins of phosphatidylinositol 3- kinase (PI3K) ，protein kinase B (AKT) and glycogen synthase kinase 3 β ( GSK3 β) in hippocampal tissues were detected by real-time fluorescent quantitative PCR and Western blot. Results : Compared with model group，scores of stereotyped behaviors，total distance in open field test，escape latency and score of pathological damage in hippo- campus decreased in Blonanserin group and risperidone group，while times of crossing platform original site，levels of PI3K，AKT and GSK3 β mRNA，and phosphorylation levels of PI3K，AKT and GSK3 increased (P ＜0. 05) . However，there was no significant difference in the above indexes between Blonanserin group and risperidone group．The differences in levels of fasting blood glucose ( FPG) ，glycosylated hemoglobin ( HbA1c) ，triglyceride (TG) ，total cholesterol (TC) ，high-density lipoprotein (HDL) and low-density lipoprotein (LDL) among normal group，model group and Blonanserin group was not statistically significant．However，levels of FPG，HbA1c，TG and TC in risperidone group were higher than those in the other three groups (P＜0. 05) ，and there was no signifi- cant change in HDL or LDL． Conclusion Blonanserin may protect schizophrenia rats from hippocampal neurons damage，improve cognitive function，learning and memory ability by activating PI3K / AKT / GSK3 β signaling path- ways.

Objective: To investigation the situation of cold chain on vaccine in parts of Zhejiang Province and to provide recommendations for the management. Methods: From October to December, 2016, we each selected an immunization clinic in Cangnan County of Wenzhou, Yongkang City of Jinhua, Jianggan District of Hangzhou. Temperature recorder and vaccine viral monitor (VVM) labels were used to monitor the cold chain during all the storage and transportation process. In Jianggan District, we use optical density sensor to detected 20 VVM labels every time when the vaccine was stock in and out. Results: In total, 54 958 records were collected by temperature recording devices in all the three immunization clinic. 275 records exceeded the temperature limit required for store and transportation, of which 270 (98.2%) were above 8 ℃ and 5 (1.9%) were under 2 ℃. Excessive temperature exposure mainly occurred during the transportation (38.2%, n=105), followed by storage process in CDCs at different levels (26.2%, n=72), stock in and out (20.7%, n=50) and storage in the refrigerators in immunization clinics (14.9%, n=41). The average optical density difference between VVM labels and the reference circular decreased from 0.404 to 0.344 when the vaccines were delivered from the Zhejiang provincial CDC to immunization clinics. The color of VVMs did not significantly changed before use. Conclusions The potential risk of vaccine cold chain in the monitoring sites is over-temperature. The weak links of cold chain management include the transportation, storage process, and stock in and out.

Objective:To optimize the clinical dosage regimen of amoxicillin and clavulanate potassium extended release ( ER) tablets based on the PK/PD parameters. Methods:Totally 30 healthy subjects ( half male and half female) were randomly divided into three groups, and orally administered the ER tablets respectively under fasting condition, before the meal and after the meal, and the optimal administration time was determined by comparing the pharmacokinetic characteristics. The subjects in the three groups were ad-ministered the ER tablets respectively at low, medium and high dosage, and the optimal dosage and dosing interval were determined based on the PK/PD parameters. Results:Under fasting condition, the AUC of amoxicillin [(32.2 ±15.0) μg·h·ml-1] was sig-nificantly lower than that before the meal [(41.7 ±1.92) μg·h·ml-1] and that after the meal [(42.6 ±17.7) μg·h·ml-1]. In contrast, the AUC of clavulanate acid after the meal [(1.89 ±0.54) μg·h·ml-1] was significantly lower than that under fasting condition [(2.55 ±0.76) μg·h·ml-1] and that before the meal [(2.58 ±0.76) μg·h·ml-1] (P<0.05). Amoxicillin and clavulanic acid displayed linear pharmacokinetics within the range of 1000-4000 mg and 62. 5-250 mg, respectively. After a single o-ral administration of amoxicillin and clavulanate potassium ER tablets at low, medium and high dose, the duration of blood concentra-tion above the minimum inhibitory concentration (MIC, 2. 0 μg·ml-1) (T> MIC) in 12 h was 5. 5, 7 and 10 h, and the percentage was 46%, 58% and 83%, respectively, and T> MIC in 12 h was 4. 5, 6 and 8 h, and the percentage was 38%, 50% and 67%, re-spectively when MIC was 4. 0μg·ml-1 . Conclusion:It is suggested that amoxicillin and clavulanate potassium ER tablets be taken at the start of a standard meal, 2 tablets per time, twice daily, which is sufficient to achieve T> MIC of 40% -50%.

Objective To investigate the imaging findings of early heterotopic ossification. Methods The imaging findings of 30 rehabilitation patients with heterotopic ossification were analyzed. Results The early heterotopic ossification performance of X-ray and CT showed articular soft tissue edema, and higher density. MR images showed different signal characteristics at different stages of heterotopic ossification. Immature bone performance the same or long T1 and T2 signal, enhanced scan showed the edge of the lace-like "strengthen". Conclusion Heterotopic ossification at different stages shows different imaging features. Magnetic resonance imaging is the best effective methods for the diagnosis of early ectopic ossification, X-ray and CT can be used for review.

Intracerebral hemorrhage is a disease with high mortality and morbidity. This article discussed the application of magnetic resonance diffusion tensor imaging for intracerebral hemorrhage clinical research, and its limitations and prospect.

ObjectiveTo investigate the imaging findings of Charcot neuroarthropathy. Methods9 cases with Charcot neuroarthropathy determined clinically or pathologically were reviewed. ResultsThe findings of X-ray and CT including: soft tissue swelling in 9 cases, bone absorption in 5, bone proliferation in 7, periosteal reaction in 7, ectopic calcification or ossification in 9, luxation or semiluxation in 4. For MRI: soft tissue swelling, edema of joint capsule in 2, bone marrow dropsy in 1, sclerotin damage in 1. The joint capsule and periarticular soft tissue unevenly enhanced after Gd-DTPA. Nuclear medicine displayed radioactivity aggregation in 1 case. ConclusionX-rays plain film is the first choice for the diagnosis of Charcot neuroarthropathy, while CT, MRI and nuclear medicine may be helpful.

BACKGROUND: Autologous vein transplantation is a common means for clinical treatment of coronary atherosclerotic heart disease. Identification of basic pathological changes of autologous vein transplantation will provide basis for further studies on how to protect transplanted vein and reduce the possibility of restenosis of transplanted vein.OBJECTIVE: This study was designed to investigate effects of hyperlipemia, an independent influential factor, on venous endothelial functions and histomorphology.DESIGN, TIME AND SETTING: This study, a randomized controlled animal experiment, was performed at the key laboratory of Department of Cardiothoracic Surgery, Changhai Hospital, Second Military Medical University of Chinese PLA.MATERIALS: A total of 50 healthy adult male rabbits were randomly and equally divided into a control group and a hyperlipemia group.METHODS: In the control group, rats were daily fed with normal diet 100-120 g. In the hyperlipemia group, rats were daily fed with normal diet 100-120 g plus cholesterol 1g. For all rats, water was freely available.MAIN OUTCOME MEASURES: Prior to and 2,4,8, and 12 weeks after feeding, blood sample and cervical vein specimens were taken for detection of blood lipid levels and observation of endothelial nitricoxide synthase (eNOS)expression, nitric oxide (NO) production, and histomorphologic change. Prior to harvesting vein sample, blood flow of jugular vein and carotid artery was examined using ultrasonic Doppler flowmeter. Simultaneously, histopathological changes including the thickness of intima and media, the diameter of the veins, and the presence of lipid or atherosclerotic plaque were observed.RESULTS: Eight weeks after feeding, blood lipid levels in the hyperlipemia group were significantly higher than those prior to feeding and in the control group (P<0.01), and maintained at this level. Obvious lipid plaques formed in the carotid artery of rabbits in the hyperlipemia group. Eight and twelve weeks after feeding, eNOS expression levels and NO production in the jugular veins were lower than those prior to feeding and in the control group (P<0.05). Simultaneously, endothelial denudation was noticed and the elastic fibers almost disappeared in the hyperlipemia group; there were no foam cells or lipid plaques.CONCLUSION: Hyperlipemia may result in endothelium dysfunction and histomorphological change of venous conduit.Nevertheless, autogenous vein transplanted into artery system, will greatly influence the remodeling of transplanted vein,even lead to restenosis of transplanted vein.

Objective To investigate the feasibility of minimal access valve surgery. Methods The authors performed minimal access valve surgery from January 1997 to January 2003 in 72 cases: 36 cases of mitral valve operations and 9 cases of tricuspid valve operations were performed through right anterolateral thoracotomy; 5 cases of aortic valve operations through mini-sternotomy approach; 5 cases of aortic valve operations and 2 cases of mitral valve operations through para-sternotomy approach; 15 cases of mitral valve operations through “reversed L” mini-sternotomy access. Results In the early course following the surgery (within 1 postoperative month ) 71 patients survived and 1 patient died of acute hepatic and renal failure.Complete follow-up in 64 patients for 6～60 months(mean, 13 months) revealed that all the patients responded symptomatically, with New York Heart Association (NYHA) Class Ⅱ status in 56 patients and Class Ⅲ in 8 patients. Color ultrasonocardiogram revealed normal status of mechanical or biological valves. All the patients were satisfied with cosmetic results. Conclusions Minimal access valve surgery is feasible, and is also associated with a better outcome in terms of sternal stability and postoperative recovery.