Objective To study the expression of a new drug resistance-related gene cDNA fragment from human lung adenocarcinoma cell line in several types of lung cancer and their adjacent normal tissues. Methods The in situ hybridization histochemistry (ISHH) and Northern blot were employed to study the location and expression of the cDNA fragment in lung cancer cells. Results The results of ISHH and Northern blot showed that the expression of the fragment was discovered in 6 cases of 12 patients with lung adenocarcinoma, but not observed in the lung cancer tissues of other types and normal tissues(P

Residency training is the mainstream model of doctor training around the world. Radiol-ogy teaching is an important part of the resident practice training. The purpose is improving and upgrading the quality of the residency training by establishing rigorous management system, intensifying the teachers disposition, setting tutorial system and reforming the examination and supervisor system, the residents.

Objective To evaluate the role of real-time three-dimensional transesophageal echocardiography(RT3D-TEE) in non-valvular atrial fibrillation with left atrial appendage(LAA) stunning after catheter ablation.Methods Clinical and echocardiographic variables were analyzed by univariate regression in order to investigate the relationship between the group of LAA stunning and others in 28 patients after catheter ablation.Results Univariate analysis revealed difference in persisting time of atrial fibrillation[(16.4 ± 11.6)weeks vs (21.3 ± 18.6) weeks,P ＜0.05],left atrial diameter[(43.4 ± 8.3) mm vs (47.6 ± 5.9) mm,P ＜0.05 ],left atrial emptying fraction (0.38 ± 0.04 vs 0.30 ± 0.09,P ＜0.05).LAA emptying fraction based on three-dimensional volume measurements had significant difference (0.20 ± 0.03 vs 0.12 ± 0.02,P ＜ 0.001) between the group of LAA stunning and other cases.Conclusions LAA ejection fraction calculation by RT3D-TEE is feasible and more accurate than by clinical and other echocardiographic in LAA stunning after ablaton of atrial fibrillation.

Objective To discuss clinical value of 64-slice spiral CT scanning in fast evaluation of severe multiple trauma.Methods A retrospective study was carried out on data of 72 multiple trauma patients diagnosed with systemic 64-slice spiral CT scanning in our hospital from January 2006 to June 2008.Of all,28 patients with traffic injuries,24 with falling injuries,10 with blunt injuries,6 with stab injuries and 4 with explosive injuries.Results There were 72 multiple trauma patients with mean scanning time of 10.2 seconds.The CT scanning showed both craniocerebral and thoracic injuries in 30 patients,brain injuries in 16,thoracoabdominal injuries plus pelvic injuries in 10,extremity and brain injuries in 14 and systemic soft tissue injuries in 2.Isotropic characteristics and postprocessing function of 64-slice spiral CT scanning could accurately diagnose and evaluate injury severity of multiple trauma.Conclusions 64-slice spiral CT scanning is a fast and effective method for fast evaluating injury severity of multiple trauma,for it can not only shorten checking time,reduce movements of the patients and relieve the pain of the patients,but also can avoid defects induced by respiratory movement and provide fairly integrated imaging materials by its isotropic characteristics and pestprecessing function.

Objective To observe the characteristics of electro-neurophysiology in diabetic patients with early peripheral neuropathy. Method The nerve conduction velocity ( NCV ) and quantitative sensory test (QST) were examined in 175 diabetic patients without clinical peripheral neuropathy and in 50 normal subjects, and their results were compared. Results In 175 diabetic patients, the abnormal ratio of NCV was 7% (13/175).While using QST,the abnormal ratio was 45% (79/175). There was significant difference between two methods (P< 0.01). Compared diabetic patients with normal subjects,there was no significant difference between motor conduction velocity and sensory conduction velocity (P > 0.05 ).While using QST, the threshold values of cold sensation, warm sensation, and thermalgesia showed significant difference between diabetic patients and normal subjects (P< 0.01). Conclusion QST is more sensitive than NCV in diagnosing diabetic peripheral neuropathy, which suggests that small nerve fibers are more likely to be damaged than large fibers in early stage.

Objective To evaluate the effectiveness of multiple spiral CT angiography in diagnosis of pulmonary embolism.Methods 16 patients clinically suspected of pulmonary embolism underwent multiple spiral CT angiography.Emboli were found in the 8 patients of all on multiple spiral CT angiography.5 of the patients were reexamined with this method 20 to 30 days after thrombolysis. Results In 8 patients with pulmonary embolism,43 vessels were involved with pulmonary embolism.The presence of pulmonary embolism on CT was seen as a total occlusion,partial filling defect,mural filling defect et al;dilated of pulmonary artery trunk;all signs with deceleration of pulmonary blood or “mosaic sign”. 5 patients were reexamined with this method.The emboli dissoved partly or entirely.Conclusion Multiple spiral CT angiography is a noninvasive and effective method for examining pulmonary embolism.

Objective To analyze the correlation between white matter injury and cognitive dysfunction using diffusion tensor imaging (DTI).Methods Seventeen subjects with TBI hospitalized from October 2012 to September 2013 had Glasgow coma scale (GCS) score of ≥ 13 (mild injury group, 10 cases) and ≤ 12 (moderate-severe injury group, 7 cases).Another 17 healthy subjects were used as controls.All were submitted to DTI examination.Fractional anisotropy (FA) and apparent diffusion coefficient(ADC) values in genu corpus callosum, splenium corpus callosum, posterior internal capsule, anterior internal capsule, and cerebral peduncle were calculated using the Neuro 3D software.Correlations between FA and ADC with the mini-mental state examination (MMSE) score were evaluated.Results Moderate-severe injury group demonstrated significantly reduced FA values in genu corpus callosum and splenium corpus callosum, and significantly increased ADC values of genu corpus callosum, splenium corpus callosum, posterior internal capsule and cerebral peduncle when compared to control group (P ＜0.05 or 0.01).FA and ADC values in the regions of interest did not differ significantly between mild injury group and control group (P ＞ 0.05).In the genu corpus callosum and splenium corpus callosum, FA values were positively correlated with MMSE score (r =0.636, 0.601), while ADC values were negatively correlated with MMSE score (r =0.552, 0.660).Conclusions DTI reveals the cerebral white matter lesion that is undetectable using CT and conventional MRI.DTI is a helpful tool to evaluate the degree of cognitive function in patients with TBI, which provides the basic reference for the clinical treatment and prognosis.

OBJECTIVE:To investigate the effects of Astragalus injection combined with Salmeterol propionate powder inhala-tion on pulmonary function,cytokines and blood rheology indexes of Chronic obsrnctine pulmonary disease (COPD) patients. METHODS:104 COPD patients were divided into observation group and control group according to the randorn number table meth-od,with 52 cases in each group. Control group was given routine symptomatic treatment+Salmeterol propionate powder inhalation 1 dose,bid;observation group was additionally given Astragalus injection 30 ml added into 5% Glucose injection 250 ml,ivgtt, qd,on the basis of control group. Treatment course of 2 groups lasted for 2 weeks. Clinical efficacy,pulmonary function indexes [forced expiratory volume in one second(FEV1),forced vital capacity(FVC),FEV1/FVC],CRP,cytokine [IL-6,IL-8,TNF-α] levels,blood rheology indexes (whole blood high-shear viscosity,whole blood low-shear viscosity,fibrinogen,hematokrit and plasma viscosity),and the occurrence of ADR were observed in 2 groups. RESULTS:The total effective rate of observation group (94.23%)was significantly higher than that of control group(75.00%);compared with before treatment,FEV1,FVC and FEV1/FVC of 2 groups were significantly increased after treatment,and those of observation group were significantly higher than those of control group;CRP,IL-6,IL-8 and TNF-α of 2 groups were significantly decreased,and those of observation group were signifi-cantly lower than those of control group. The whole blood high-shear viscosity,whole blood low-shear viscosity,fibrinogen,hema-tocrit and plasma viscosity of observation group were decreased significantly after treatment,and the observation group was signifi-cantly lower than the control group,with statistical significance(P<0.05). No significant ADR was found in 2 groups. CONCLU-SIONS:Astragalus injection combined with Salmeterol propionate powder inhalation is significantly effective for COPD,improves pulmonary function of patients,improves micro inflammatory state and decreases blood rheology indexes with good safety.

Objective To report a ileal ureteric replacement surgery for bilateral long segment ureter injury.Methods Data from a patient suffered bilateral long segment uretercic stenosis was reviewed.A 32-year-old female,who underwent radical surgery of cervical cancer and postoperative radiotherapy 1 year ago,complained intermittent low back pain for 11 months and was found renal function abnormality for 3 months.Ultrasound showed bilateral hydronephrosis,and the CT urography showed bilateral middle-lower ureteral stenosis.Preoperative diagnosis was bilateral hydronephrosis with bilateral ureteral obstruction.The patient underwent bilateral ileal ureteric replacement under general anesthesia.Results The surgical procedure was successful and the postoperative recovery was favorable.The operation time was 180 min,and blood loss was 100 ml.The abdominal cavity drainage tube was removed 8 days and the urinary catheter was removed 9 days postoperatively.During 8 months' follow up,the patient showed resolved flank pain with stable serum creatinine.No complication was reported.The CTU 2 months postoperatively showed the hydronephrosis was relieved with normal functioning kidneys.Conclusion Bilateral ileal ureteric replacement surgery might be an effective procedure and viable option for bilateral long segment ureteric injuries.

Objective:To investigate the effect of microbubbles combined with gentamicin on the clearance of bacterial biofilms and the healing of diabetic foot ulcers under low-frequency ultrasound.Methods:From July 2021 to June 2022, 27 patients with chronic diabetic foot ulcers complicated with infection were prospectively selected from the Trauma Center of the Second Affiliated Hospital of Chongqing Medical University. The patients were divided into low-frequency ultrasound + microbubbles + gentamicin ointment group, low-frequency ultrasound + microbubbles group, and gentamicin ointment group by using a random number table, with 9 patients in each group. The three groups were all treated with simple debridement by the same surgeon.Afterward, in the low-frequency ultrasound+ microbubbles+ gentamicin ointment group, the wounds covered by 4% microbubble suspension were firstly irradiated with low-intensity focused ultrasound for 5 min, and then evenly applied with gentamicin ointment. In the low-frequency ultrasound + microbubbles group, the wounds covered by 4% microbubble suspension were irradiated with low-intensity focused ultrasound for 5 min. The gentamicin ointment group was treated with gentamicin ointment evenly. The treatment lasted for 2 weeks, and secretions and tissue specimens were collected during and 2 weeks after the treatment, respectively. The general indexes of wound surface (including ulcer depth score, secretion exudation score, fresh granulation tissue growth score, and total index score), ulcer area, ulcer healing rate, as well as negative rate of secretion culture were compared among the three groups after treatment. Additionally, the structural changes in bacterial biofilms under a scanning electron microscope and colony count under a laser confocal scanning microscope were compared among the three groups after treatment.Results:No significant differences were found in the general datas among the three groups (all P>0.05). After treatment for 2 weeks, the overall general indexes showed statistically and significant differences among the three groups (all P<0.05). Each index score in the low-frequency ultrasound + microbubbles + gentamicin ointment group was lower than that in the low-frequency ultrasound + microbubbles group and the gentamicin ointment group (all P<0.05). There were no significant differences in overall ulcer area among the three groups ( P>0.05). The overall ulcer healing rate presented significant differences among the three groups ( P<0.05). The healing rate in the low-frequency ultrasound + microbubbles + gentamicin ointment group was higher than that in the low-frequency ultrasound + microbubbles group and the gentamicin ointment group (all P<0.05). The overall negative rates of secretion culture among the three groups were significantly different ( P<0.05), the negative rate in the low-frequency ultrasound + microbubbles + gentamicin ointment group was higher than that in the low-frequency ultrasound + microbubbles group and the gentamicin ointment group (all P<0.05). Scanning electron microscopy confirmed bacterial biofilm infection in the three groups before treatment. After treatment for 2 weeks, the biofilm formation in the low-frequency ultrasound + microbubbles + gentamicin ointment group reduced significantly, while the low-frequency ultrasound + microbubbles group and the gentamicin ointment group had little change compared with that before treatment. Significant differences were detected in total colony count among the three groups under the confocal microscope ( P<0.05). The colony count in the low-frequency ultrasound + microbubbles + gentamicin ointment group was lower than that in the low-frequency ultrasound + microbubbles group and the gentamicin ointment group (both P<0.05). Conclusions:Ultrasound microbubbles combined with gentamicin can clear bacterial biofilms and promote the healing of diabetic foot ulcers.