BACKGROUND:Previous studies demonstrated that ischemia can be compensated by establishing collateral circulation and microangiogenesis,and exercise training can ameliorate blood supply of ischemic lower limb.However,whether exercise training accelerate establishment of collateral circulation remains poorly understood.OBJECTIVE:To explore the mechanism of exercise training on accelerating microangiogenesis of rat ischemic lower limb.METHODS:Sprague-Dawley rats were randomly divided into the exercise training,model and sham-surgery groups.All animals were established left lower limb ischemia models except those in the sham-surgery group.Rats in the exercise training group were forced running 30 minutes per day at 1 week after model preparation and those in other groups were performed daily activities.The adductor of ischemic lower limb was obtained for the examination of microvessel density and the expressions of vascular endothelial growth factor and basic fibroblast growth factor.Simultaneously,bone marrow-derived endothelial progenitor cells were harvested for detection of microangiogenesis.RESULTS AND CONCLUSION:Number of endothelial progenitor calls,expressions of vascular endothelial growth factor and basic fibroblast growth factor,as well as microvessel density of the exercise training group was obviously greater than those in the model and sham-surgery groups(P<0.01).Compared with the model and sham-surgery groups,in vitro vasculogenesisof bone marrow-derived endothelial progenitor cells in the exercise training group was increased(P<0.05).These findings demonstrated that lower limb ischemia increases microangiogenesis,and exercise training enhances this effect.

Objective To investigate the clinical value of bone scintigraphy for the diagnosis of synovitis, acne, pustulosis, hyperostosis and osteitis (SAPHO) syndrome. Methods The characteristics of SAPHO syndrome on 99Tcm-MDP imaging of 8 cases were retrospectively analyzed. Results The 99TcmMDP bone scan was positive for all patients. Seven cases were found lesions in the costoclavicular region, 3cases involved with unilateral sacroiliac joint, 2 cases involved with spine and 1 patient with extremity. Four lesions were found without relevant clinical symptoms. Conclusion Bone scintigraphy is useful for the diagnosis of SAPHO syndrome, especially for those lesions with no clinical symptoms.

Objective To design an experiment for method-comparison and bias estimation of multi tests on multi instruments.Methods According to the procedure described by the NCCLS approved guideline EP9-A and improving the method of sample collection,we took 8 patient mixing samples each day to analyze all comparison tests on 11 auto-chemistry analyzer within following 5 days.The duplicates were assessed within the same run.The coefficient of correlation and average bias% were calculated,and the system errors at medical decided levels were assessed.Results Taking ALT as an example,the coefficients of correlation were between 0.994-1.000,and the average bias% were between-0.460%-4.927%,SE at 40U/L was-1.510-1.834 and SE at 300 U/L was-3.101-9.188.Conclusion In all tests that joined the comparison among the different instruments,28 tests were acceptable,2 tests were acceptable after modifying the coefficients,and AMY and LIP were not acceptable.

OBJECTIVETo explore the imaging characteristics and operation outcomes of intramedullary schwannoma in thoracolumbar spine.

METHODSFrom June 2005 to December 2012,17 patients with intramedullary schwannoma in thoracolumbar spine were operated through posterior approach, including 11 males and 6 females with an average age of 53 years old ranging from 46 to 67 years old. The courses of disease ranged from 3 to 5 years (averaged 3.3 years). Thoracic patients manifested chest and back pain,numbness and inability on lower limb gradually, unsteady gait. Lumbar patients manifested low back pain,radiating pain and numbness on lower limb, intermittent claudication. Preoperative VAS score was 5 to 8 with an average of 6.12. Eleven patients suffered from never injury, 4 cases were grade C, 5 cases were grade D and 2 cases were grade E according to Frankel classification. Three patients were injured on thoracic segments, 5 patients were on thoracolumbar segments, 3 patients on lumbar segments and 6 patients on lumbosacral segment confirmed by CT and MRI. Five patients were epidural, 12 were intradural extramedullary. Six patients underwent spinal decompression and tumor resection simply, eleven patients underwent spinal decompression, tumor resection, internal fixation and bone graft fusion.

RESULTSNo injury of blood vessel or spinal cord occurred during operation, cutting healed well. All patients were followed up from 12 to 60 months with an average of 32 months. Chest and back pain, low back pain, radiating pain and numbness on lower limb were improved significantly. VAS score at final follow-up was 0 to 3 (averaged 1.5). According to Frankel classification, 5 cases were grade D, and 6 cases were grade E at final follow-up.

CONCLUSIONMRI is an effective method in diagnosis of intramedullary schwannoma in thoracolumbar spine. Operative method is choosed by imaging expression, and the aim is effectively decompression of spine, reconstruction of stability of spine.

Aged ; Female ; Humans ; Lumbar Vertebrae ; surgery ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Neurilemmoma ; pathology ; surgery ; Spinal Neoplasms ; pathology ; surgery ; Thoracic Vertebrae ; surgery

Objective To investigate the clinical value of 99Tcm-MIBI gated G-MPI in detecting the myocardial damage in sarcoglycanopathy.Methods 99 Tcm - MIBI G - MPI was performed in 8 patients (3 males,5 females,age ranged from 10 to 30 y) with sarcoglycanopathy confirmed by clinical results and molecular pathology and 4 healthy persons as control group.Quantitative gated SPECT (QGS) software was used for processing and interpretation.Myocardium of left ventricle was divided into 7 segments and 20 subsegments.A five-point scoring system was used to evaluate the myocardial damage.Results Seven patients showed positive results in G-MPI (7/8).Fifty-nine sub-segments of injured myocardium were detected in the 140 sub-segments of 7 abnormal patients.One abnormal segment was observed in 1 patient,two abnormal segments were detected in 2 patients,and ≥3 abnormal segments were observed in 4 patients.Enlarged left ventricles were detected in 5 patients (5/8),and the LVEF of 3 patients among them decreased to (43.1 ±2.8)％.Conclusion 99Tcm-MIBI G-MPI can detect myocardial damage in sarcoglycanopathy as a direct and non-invasive method,and can be used in the early diagnosis and long-term follow-up in sarcoglycanopathy.

OBJECTIVETo investigate a novel method for the reconstruction of large vermilion defects.

METHODSBased on the size and shape of the defects, a buccinator myomucosal flap pedicled with the junction of buccinator and orbicularis oris in the oral commisure was designed and rotated to reconstruct the large vermilion defects. The upper bound of the flap is at least 1 cm away from the stensen's duct. The width is about 2.5-3.0 cm, and the length is as far as to arrive the raphe pterygomancibularis. The donate site is directly closed primarily. There is no need for secondary pedicle division.

RESULTSFrom July 2003 to April 2013, 14 cases with large vermilion defects was reconstructed with this method. No flap necrosis occurred with primary healing. 5 cases were followed up with an average follow up period of 1 year (0.5-3 years). The apprearance and function of the reconstructed vermilion were satisfactory without any apparent donor site defect. The patients were satisfied with both the functional and cosmetic results.

CONCLUSIONThe buccinator myomucosal flap is a simple and ideal method for reconstruction of large vermilion defects, especially for the defects closed to the commisure.

Adolescent ; Adult ; Child ; Facial Muscles ; surgery ; Female ; Follow-Up Studies ; Humans ; Lip ; surgery ; Male ; Mouth Mucosa ; surgery ; Surgical Flaps ; Young Adult

A study was performed to validate 3 FMDV 3ABC-I-ELISA kits developed in China for the differentiation of FMDV infected and vaccinated animals.Sets of sera from naive and vaccinated cattle as well as from cattle that had been infected were tested for antibodies against nonstructural proteins (NSPs) of FMDV by commercial diagnosis kits,Ceditest(R)FMDV-NS (Ceditest(R) kit),UBI(R) FMDV NONSTRUCTURAL PROTEIN ELISA DIRECTION INSERT (UBI(R) kit) and a FMDV 3ABC-I-ELISA kitdeveloped at the Lanzhou Veterinary Research Institute.The test parameters (sensitivity and specificity) of the three kits were determined,and the result obtained from FMD 3ABC-I-ELISA kit was compared with that obtained from two foreign kits.The results indicated that the coincidence rate between the FMDV 3ABC-I-ELISA and Ceditest(R) kits was 98.05%,and the coincidence rate between the FMDV 3ABC-I-ELISA and UBI(R) kits was 94.4%; the sensitivity of both Ceditest(R) and FMDV 3ABC-I-ELISA kit was 100%.However,the sensitivity of the UBI(R) kit was only 81.8%.With sera from naive or vaccinated non-infected animals,the specificity of all tests exceeded 90%.

Aim To probe the effect of bambuterol on experimental asthma and its pharmacodynamic and pharmacokinetic chracteristics,as well as its mechanism. Methods Experimental asthma model on guinea pigs was induced by histamine and ovalbumin in vivo and their trachea flake and pulmonary bar were emptied to the research in vitro respectively. Results Bambuterol inhibited asthma induced by histamine and ovalbumin in guinea pigs in a dose-dependent manner. Bambuterol gave no relaxation to all trachea flake,but the intragastric gavage(ig) of plasma of the bambuterol-treated guinea pigs relaxed trachea flake and pulmonary bar,and the effect on pulmonary bar was stronger than that on trachea flake. The peak value appeared about 4 h after administration,and the action continued for more than 24 h. Conclusion Bambuterol as pro-drug of terbutaline metabolized in body has a mild and permanent effect on the model of experimental asthma in guinea pigs.

Objective:To investigate the incidence and risk factors of retinopathy of prematurity (ROP) in extremely preterm infants (EPI) before 28 weeks of gestation during 8-years period.Methods:A retrospective study. From January 1, 2011 to December 31, 2018, 300 EPI infants with a gestational age of less than 28 weeks admitted to the neonatal intensive care unit (NICU) of Tianjin Central Hospital of Gynecology Obstetrics were included in the study. EPI birth gestational week (GA), birth weight (BW), gender and other basic information, as well as neonatal respiratory distress syndrome, oxygen (&ge;10 d), bronchopulmonary dysplasia (BPD) and other hospitalizations and complications were recorded. According to ROP international classification standards, ROP was staged. Severe ROP was defined as ROP that requires treatment. The screening start time, screening interval, and intervention time of all children tested were carried out in accordance with the requirements of the "Guidelines for Screening Retinopathy of Prematurity" until the end of follow-up. The most severe ROP during the follow-up of each examined child was recorded as the final screening result of the examined child, and those with asymmetric eyes with the screening results of the severe side of the diseas was recorded. A retrospective analysis of the overall incidence of EPI ROP showed the incidence of severe ROP, and the first and second stages of EPI ROP during the 8 years (from January 1 , 2011 to December 31, 2014, and January 1, 2015 to December 31, 2018), changes in the rate of severe illness. Logistic regression analysis was used to screen independent risk factors for severe ROP.Results:Among 300 EPI infants, the average GA was (26.7±1.8) weeks; the average BW was (993.3±178.7) g. Two hundred and five infants (68.3%) were diagnosed with ROP, 116 (56.6%), 57 (27.8%), and 32 (15.6%) infants of stage Ⅰ, Ⅱ, and Ⅲ disease, respectively. There were no infants of stage IV and V. There were 30 infants (14.6%) with additional lesions and 59 infants (19.7%) with severe ROP requiring treatment. With the increase of GA ( χ2=52.391, 44.521; P=0.000, 0.000) and BW ( χ2=43.772, 26.138; P=0.000, 0.000), the incidence of EPI ROP and the incidence of severe ROP decreased significantly. From 2011 to 2018, the number of people surviving EPI obviously increased, especially those with small GA (26 weeks) and low BW (750 g). The average GA of the second stage EPI was lower than that of the first stage, the difference was statistically significant ( t=2.243, P=0.026); the average BW of the second stage EPI was lower than the first stage, the difference was not statistically significant ( t=1.428, P=0.154). The incidence of ROP in the second stage EPI was slightly higher than that in the first stage, and the incidence of severe ROP was lower than that in the first stage, the difference was not statistically significant ( χ2=1.069, 1.723; P=0.301, 0.189). Multivariate logistic regression analysis showed that GA<27 weeks ( β=-2.584, P=0.032), maternal chorioamnionitis (CA) ( β=-0.935, P=0.038) and BPD ( β=-1.432, P=0.001) was an independent risk factor for severe ROP. Conclusions:The incidence of EPI ROP and severe ROP are 68.3% and 19.7%, respectively. From 2011 to 2018, the number of survivors of EPI obviously increase, and those with small GA and low BW increase significantly; however, the incidence of ROP and severe ROP remaine stable. GA, CA and BPD are independent risk factors for severe ROP.

Adult ; Carcinoma, Renal Cell ; pathology ; surgery ; Cerebellar Neoplasms ; pathology ; surgery ; Cystadenoma, Papillary ; pathology ; surgery ; Diseases in Twins ; pathology ; surgery ; Epididymis ; pathology ; surgery ; Genital Neoplasms, Male ; pathology ; surgery ; Hemangioblastoma ; pathology ; surgery ; Humans ; Kidney Neoplasms ; pathology ; surgery ; Male ; von Hippel-Lindau Disease ; pathology ; surgery