Objective To investigate the suppression effect and mechanism of Astilbin on lung allograft rejection in rats, in order to know the function of Astilbin on rats’ lung acute rejection. Methods The model of rat left lung transplantation was set up. Sixty lung transplanted rats were divided into two groups randomly, control group: rats were fed with normal saline 1ml per day, experimental group: rats were fed with Astilbin 1mg/kg per day. Survival time, transforming rate of T cells in spleen, activity of interleukin 2 (IL-2) in spleen lymph cells and apoptosis of T cells were observed. Changes in ultrastructure of pulmonary arteries were observed by electron microscope. Results The survival time in experimental group was prolonged than that in control group (25.4±2.1 d vs. 13.4±1.2 d;t=2.042, Plt;0.05）. Transforming rate of T cells of spleen in experimental group was significant lower than that in control group (23 465.8±8 783.4 cpm vs. 74 567.3±12 874.6 cpm; t=2.284，Plt;0.05）.Activity of IL-2 of spleen lymph cells in experimental group was significant lower than that in control group (425±2.65U/ml vs. 23.46±1.82U/ml; t=3.165, Plt;0.01).Effectively derive apoptosis of activated T cells in acute rejection were observed in experimental group, the ultrastructure of pulmonary arteries showed attenuated injury in experimental group. Conclusion Astilbin decreased the IL-2 concentration in plasma and induced the apoptosis in activated T cells, then suppressed the acute rejection of lung allograft and prolonged the survival period of lung transplantation rats.
Objective To investigate the clinical features of polypoidal choroidal vasculopathy (PCV) in Chinese patients.Methods The clinical data of 71 continuous patients (142 eyes) who were diagnosed with PCV by fundus photography, fundus fluorescein angiography (FFA), indocyanine green angiography (ICGA) and optical coherence tomography (OCT) were analyzed retrospectively.Results Eleven patients (11 eyes) of 71 patients (142 eyes) were diagnosed with PCV to make up 15.49% and 7.75% of the numbers of patients and affected eyes respectivery. The patients included 7 males (63.6%)and 4 females (36.4%). The predominant location for these lesions was the macular region in 10 eyes (90.9%). Fundus examination demonstrated the reddish-orange nodular elevations in 6 eyes. ICGA revealed umbrellalike or twiglike branching vascular networks and polypoidal dilations at the vascular terminals of the branches in all patients, and feeder vassels within choroidal vascular networks were found in 8 eyes. OCT images of retinochoroidal structures showed prominent anterior protrusion of the orange subretinal mass corresponding to the polypoidal structure in the indocyanine green angiogram. An apparent discontinuity was observed in the highly reflective layer which delineates the polypoidal structure.Conclusions PCV mainly affects the male over 50 years and the eyes involved were mostly unilateral. Most of polypoidal vascular lesions are present in the macul ar area. (Chin J Ocul Fundus Dis，2003，19：269-332)
Objective To observe the clinical and pathological characteristics of choroidal metastatic carcinoma from lung carcinoma.Methods The clinical and pathological data of 6 patients with choroidal metastatic carcinoma from lung carcinima were analysed retrospectively.Results All the 6 patients had severe visual impairment, including 3 with severe ophthalmalgia. Flat neoplasm were seen in the posterior pole of the eyes in all the 6 patients and retinal detachment were found in 5 patients. Fundus fluorescein angiography (FFA) examination had been performed on 1 patient and blocked fluorescence and hyperfluorescence were seen in the lesion with pinpoint fluorescein leakage loop around it. CT examination had been performed on 3 patients and the shadow of flat homogenous tumor was seen. MRI examination had been performed on 1 patient and high signal intensit ies on T1W and low signal intensities on T2W were found. In all the 6 patients with primary lung carcinoma, 5 were diagnosed with adenocarcinoma and 1 with cellule carcinoma through pathological examination, and 5 patients were diagnosed with choroidal metastatic carcinoma from adenocarcinoma and 1 with choroidal metastatic carcinoma from cellule carcinoma through pathological examination.Conclusion Rapid visual acuity decrease, severe ophthalmalgia, flat neoplasm in ocular fundus and secondary retinal detachment are the main clinical characteristics of the choroidal metastatic carcinoma from lung carcinoma. Most histopathologica l manifestations of the metastatic carcinoma like that of the primary focus, and adenocarninoma is the most common histoclassification. (Chin J Ocul Fundus Dis，2003，19：333-404)
Objective lt;brgt;To investigate the morphological features of choroidal neovascularization (CNV) in central exudative chorioretinopathy (CEC) using optical coherence tomography（OCT）. lt;brgt; lt;brgt;Methods lt;brgt;OCT and fundus fluorescein angiography (FFA) were performed in 41 cases (43 eyes) of CEC,and the course of CEC disease was from 1 week to 10 months. Twenty-seven of 43 eyes were also examined by indocyanine green angiography (ICGA). lt;brgt; lt;brgt;Results lt;brgt;OCT images revealed 5 kinds of morphological features of CEC: well-defined CNV（41.86 %）,poorly-defined CNV(30.23 %),hemorrhagic pigment epithelium detachment （PED）(16.28 %), CNV companied with serous (6.98 %) or hemorrhagic neurosensory retina detachment (4.65 %). CNV mainly showed well-defined and poorly-defined CNV (72.09 %).In those eyes that could clear define the CNV boundary,there were 12 eyes on FFA examination and 20 eyes on ICGA examination which defined the boundary from retinal horizontal plane, while there were 23 eyes on OCT examination which defined the boundary from retinal vertical section. Classic CNV on FFA consistently presented with well-defined boundaries on OCT, whereas non-classic CNV had a variable cross-sectional appearance. lt;brgt; lt;brgt;Conclusions lt;brgt;The OCT morphological features of CNV in CEC is mainly well-defined CNV and poorly-defined CNV; OCT examination can precisely observe the retinal and choriocapillaries pathological anatomy of CEC from retinal vertical section, in making the CEC diagnosis as an important complementary examination of FFA and ICGA which observe the focus from retinal horizontal plane. lt;brgt; lt;brgt;(Chin J Ocul Fundus Dis, 2002, 18: 121-124)
ObjectiveTo summarize the surgical learning curve and evaluate the effectiveness, safety and feasibility of the robotic-assisted thoracoscopic surgery (RATS) by comparing with the conventional vedio-assisted thoracoscopic surgery (VATS).MethodsThe clinical data of 40 patients receiving robotic assisted thoracoscopic anatomic lung resection from March to June 2016 in our department were reviewed. There were 29 males and 11 females with the age of 54-78 (60.2±12.7) years in the RATS group, and 27 males and 10 females with the age of 52-76 (58.7±11.5) years in the VATS group. Lung space-occupying lesions were comfirmed by preoperative diagnosis. The operative time, blood loss, chest tube retention time, postoperative hospital stay and perioperative morbidity and mortality were analyzed. The safety and feasibility were evaluated, and the learning curve was summed up.ResultsOperative time, postoperative ventilation time, intraoperative blood loss, chest tube retention time, postoperative pain, average hospital stay, postoperative complication rate between two groups were not statistically significant. In the RATS group preoperative preparation time was longer than that of the VATS group (24.5 min vs. 15.6 min, P=0.003), and the rate of conversion to thoracotomy of the RATS group was lower than that of the VATS group (0 vs. 10.8%). There was no perioperative death in two groups.ConclusionRobotic-assisted thoracic surgery is safe and effective in the early learning process, and the learning curve can be entered into the standard stage from the learning stage after initial 10 operations.
Objective To explore composition of volatile organic compounds (VOCs) in exhaled breath of low-dose radiation-damaged Sprague-Dawely (SD) rats by thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS), and search for the differential metabolites of VOCs in the series of rats after radiation damage, and establish a noninvasive radiation damage detection method. Methods SD rats were randomly divided into five groups (a blank group, a 0.5-Gy group, a 1-Gy group, a 2-Gy group, and a 3-Gy group), with 8 rats in each group. A low-dose radiation injury model was established in rats. After the cobalt source radiation damage was performed, the body weight of rats was recorded, peripheral blood hematology was analyzed, and the exhaled breath of rats was collected on the 1st, 5th, 9th and 13th day. The composition of VOCs in the exhaled breath was analyzed by using the TD30-GC-MS technique, and multivariate statistical analyses were carried out to explore and obtain the differentiated metabolites after the radiation damage. Results After radiation damage, the rats showed a short-term decrease in body weight, peripheral blood and lung tissue sections were different, and the content of VOCs components in the exhaled breath of the damaged rats was significantly different from that of the rats in the blank group. Among them, four VOCs, acetophenone, nonanal, decanal and tetradecane increased, while heptane, chlorobenzene, paraxylene and m-dichlorobenzene decreased. Conclusions Through the GC-MS analysis of the exhaled breath of rats, eight components of VOCs in the exhaled breath of rats can be used as differential metabolites of radiation damage. This study lays a foundation for the establishment of a GC-MS analysis method for the components of VOCs in the exhaled breath of rats, as well as for the development of a nondestructive analytical assay for biological radiation damage.
Objective To evaluate the effect of anterolateral approach in treating thoracolumbar disc protrusion. Methods From May 2004 to May 2008, 11 patients with thoracolumbar disc protrusion (T10-L3) underwent discectomy, autologous il iac bone graft, and internal fixation via anterolateral approach. There were 9 males and 2 females aged 26-57 years old (average 42.8 years old). The course of disease was 1 week-11 years (average 2.7 years). Nine patients showed the lower l imbs weakness, 8 had sensory disturbance, 6 presented with lumbodorsal pain, 5 had the lower l imb pain, 4 presentedwith sphincter muscle disturbance, 3 suffered from foot drop, and 5 had a history of lower back injury. X-ray, CT, and MRI test showed that 9 cases had the single-segmental protrusion, 2 cases had double-segmental protrusion, 2 cases were accompanied with ossification of the thoracic vertebra yellow l igament, 2 cases were combined with ossification of the vertebra posterior longitudinal l igament, and 1 was compl icated with Scheuermann disease. Preoperatively, the intervertebral height was (7.2 ± 1.3) mm and JOA score was 6.4 ± 2.8. Results The time of operation was 2.5-5.5 hours (average 3.5 hours); the blood loss during operation was 500-1 200 mL (average 750 mL). During operation, intraoperative pleural tear occurred in 1 patient, peritoneal tear in 1 patient, and dural laceration in 1 patient. Repairing was performed intraoperative and preventive suction drainage was used for 3-5 days. No postoperative hydropneumothorax and cerebrospinal fluid leakage occurred. All incisions healed by first intention. No postoperative compl ications of nerve system occurred. All the patients were followed up for 1-4 years (average 2.4 years). X-ray films showed that all the patients achieved bony fusion without the occurrence breakage and loosening of titanium plate and screw 6-9 months after operation. Three cases displayed subtle scol iosis (10-15°) without influence on spinal equil ibration. The intervertebral height increased to (12.3 ± 1.5) mm 2 weeks after operation, indicating there was a significant difference compared with preoperative value (P lt; 0.05). The intervertebral height 1 year after operation when the bony fusion was reached decreased to (7.5 ± 1.2) mm, indicating there was no significant difference compared to the preoperative value (P gt; 0.05). The JOA score increased to 7.6 ± 3.2 at 1 year after operation, indicating there was a significant difference compared with preoperative value (P lt; 0.05). The symptoms and signs of all the patients were improved to various degrees after operation. According to improvement rate evaluation system proposed by Hirabayashi t al., 4 cases were graded as excellent, 6 as good, 1 as fair, and the excellent and good rate was 90.9%. Conclusion Treating thoracolumbar disc protrusion via anterolateral approach is safe and effective.
ObjectiveTo improve the understanding of psittacosis, the clinical data of 8 cases are reviewed. The application of pathogen metagenomics next-generation sequencing (mNGS) in the diagnosis of nocardiosis is also investigated.MethodsThe clinical data of eight patients with psittacosis diagnosed by mNGS in Nanjing Drum Tower Hospital from January 2018 to May 2020 were reviewed. The clinical characteristics, laboratory examination characteristics and imaging changes were analyzed, and the treatment outcome was followed-up.ResultsAmong the eight cases, there were six males and two females, aged 43～83 years old, with an average age of 64±12 years old. Six of them had a clear history of poultry exposure. The major clinical manifestations were fever, cough, dyspnea, etc. Chest high-resolution computed tomography (HRCT) may have solid shadow, ground glass like shadow. Chlamydia psittaci was detected by mNGS in eight patients’ bronchoalveolar lavage fluid. Minocycline or moxifloxacin were administrated, six patients were discharged after their condition improved, and two patients died.ConclusionsThe incidence of psittacosis is low, and its clinical manifestations lack specificity. In the course of the disease, there may be different degrees of fever, cough, sputum, dyspnea and other symptoms. The lungs can be heard with wet rales, chest HRCT can be seen ground glass shadow, consolidation shadow, accompanied by air bronchogram. Chlamydia psittaci can be detected in alveolar lavage fluid by mNGS. The patients need to be treated for a long time, lasting at least 10 to 14 days. Tetracycline drugs should be the first choice, and can be combined with other antibiotics with activity against gram-positive and gram-negative bacteria in critical patients.
Objective To investigate short-term outcomes of robot-assisted Heller-Dor myotomy (RAHM-Dor) for achalasia of cardia and our learning curve experience. Methods The clinical data and recent follow-up results of 42 patients who received RAHM-Dor from November 2015 to January 2020 in the Department of Thoracic Surgery of the First Affiliated Hospital of Nanchang University were retrospectively analyzed, including 20 males and 22 females with a mean age of 40.8±18.4 years. ResultsDysphagia was the most common symptom, followed by heartburn and regurgitation. The mean operation time was 122.8±23.9 min. The mean blood loss was 47.5±32.7 mL. Two patients suffered mucosal injury, and successfully repaired by suturing during surgery. There was no esophageal fistula, conversion to an open operation or perioperative death in this series. The median length of hospital stay was 8 (6, 9) d. In all patients, the Stooler and Eckardt scores of postoperative 1, 6 and 12 months decreased compared to those of pre-operation (P<0.001). Conclusion RAHM-Dor is a safe and feasible avenue for the treatment of achalasia of cardia, and can achieve a satisfying short-term results. The learning curve shows a transition to the standard stage from the learning stage after 16-18 operations.