The dynamic changes of 64 cases of primary bronchogenic carcinoma were reviewed with their serial chest films.Obstructive pneumonitis was found in 26 cases,of which 17 showed a dense and/or enlarged hilar shadow on the first chest film.Inflammation could be minimized after treatment but the hilar shadow remained dense and/or enlarged.Hilar masses could appear after total absorption of inflammation.Thus increased density and/or enlargement of the hilar shadow could be considered as an important sign of obstructive pneumonitis.Solitary pulmonary nodule(SPN)was found in 36 cases.The nodules with a diameter smaller than 2 cm on the first chest film usually showed a high incidence of vacuolization and could be taken as an early sign of lung carcinoma.The nodules with a diameter larger than 2 cm usually suggested the malignant nature of the lesion if they exhibited an increased tendency to have spicule sign.tabulation sign,or linear shadows in lung parenchyma which might be clearly or blurrily demarcated and connected the nodule with the pleura.No vacuolization was seen in those nodules larger than 3 cm in diameter.The appearance of pleural indentation showed no relation to the size of the nodule.The dynamic changes of the nodulessmaller than 2 cm in diameter were emphatically observed and they usually appeared as a small piece of thin cloudiness,a small nodule,or a reticu-lonodular shadow on the first chest film.The measures to increase the detection of the nodular lesion smaller than 2 cm in diagmeter on a chest film were discussed.In addition,a rare early feature of lung adenocarcinoma,which showed a large piece of interstitial changes,was presented.

Objective To study the relationship between gastric mucosa associated lymphoid tissue (MALT) lymphoma and Helicobacter pylori (H.pyori) infection retrospectively. Methods The paraffin embedded samples of the tumors in gastric intestinal tract and its corresponding normal tissues from 35 patients with non Hondgkin's lymphomas in gastric intestinal tract were sectioned. The slides, except routine histopathologic study, were submitted to immuno histochemical staining (CD 3,CD 5,CD 10 ,CD 20 ,C 23 ,CD 45 RO, kappa, lamda, cyclin, Ki67, TUNEL) and to HE staining for the detection of H. pylori infection. Results ①Twenty one cases were identified to be MALT lymphomas according to the results of immunohistochemical staining, of them 16 cases were gastric MALT lymphomas, 1 case of intestinal MALT lymphoma, and 4 cases of colonic MALT lymphomas. ② H. pylori infection in gastric MALT lymphoma was 100% except in 3 cases who had only tumor tissues, which could not be evaluated. ③ Two cases were stage Ⅰ 1 gastric MALT lymphomas, 5 were stage Ⅱ 1,and 9 were stage Ⅱ E. ④ Only 6 cases had recognized as gastric MALT lymphomas by endoscopy and biopsy. Three patients were misdiagnosed as gastric cancer, 1 as M?n?trier disease, 1 as atrophic gastritis, and 5 as chronic gastritis endoscopiclly. ⑤ One patient got a complete regression after 3 courses of anti H. pylori therapy and was in good health after 3 years of the treatment. Conclusions ① A close relation was present between H.pyloi infection and gastric MALT lymphoma. ② Early gastric MALT lymphoma may regress after eradication of H.pylori.

Objective Evaluate the immunotoxicity of Ginenoside Compound K Injection.Methods Active Systemic Anaphylaxis (ASA)tests and Passive Cutaneous Anaphylaxis (PCA)tests were used to evaluate Ginenoside Compound K Injection.Results In the ASA tests,positive control group showed pole-strength anapbylaxis,both the high-dose group and the low-dose group of Ginenoside Compound K Injection didn't produce allergic reaction and the body weights of all groups showed no significant differences.In the PCA tests,all rats of positive control group caused blue spots with their diameters bigger than 5 mm (diameters on the left side of blue spots was (10.1± 3.34) mm and diameters on the right side of blue spots was(7.57± 1.94)mm.Serum IgE was significantly increased.While both high dose and low dose of Ginenoside Compound K Injection group didn't show blue spots with their diameters greater than 5 mm and their IgE levels showed no significant differences compared with negative control group.Conclusion Ginenoside Compound K Injection showed no immunotoxicity under these experimental conditions.

Objective To investigate Hysterothylacium aduncum (Anisakidae) infection in marine fishes from Bohai Sea and Yellow Sea. Methods Nematodes were collected from the digestive tract of fishes, fixed with hot 4% formalin and preserved in 70% ethanol for study. The specimens were cleared in lactophenol for light microscopical examination, and properly treated for scanning electron microscopy (SEM). Results Among the fishes examined, 14 out of 93 species (15.1%) were found infected by H.aduncum, with a higher prevalence in the fish of Lophius litulon(66.7%), Scomber-omorus niphonius(47.5%), and Gadus macrocephalus(33.3%). H.aduncum infection was first recorded in elasmobranch-Raja smirnovi. Morphological differences of H.aduncum were observed, including the width of lateral alae and the length of intestinal caecum. Conclusion H.aduncum in fishes of Bohai Sea and Yellow Sea in China may be a complex species, and its high prevalence in some fishes reminds the risk of anisakiasis by eating raw fishes.

Objective To explore the efficiency,safety and suitable dosage of the non-invasive treatment of malignant gliomas with high intensity focused ultrasound(HIFU).Methods An extracorporeal HIFU with 9.7 MHz transducer(focal length: 4.5 mm,focal intensity: 2 500 W/cm~(2)) was used.Fifteen resected human malignant gliomas were randomly assigned to receive HIFU ablation for 10,20,30 s.After the treatment,the exposure coverage and marginal zone were collected and examined by HE staining and electron microscope.Results Exposure coverage and margin was safe in 10 s group.Typical coagulation necrosis was detected at exposure coverage with no detectable change at margin in 20 s group.Typical coagulation necrosis was seen at both exposure coverage and margin in 30 s group.Conclusion Under the parameters used in this study,20 s is a beneficial therapeutic dosage.HIFU is an accurate method for malignant gliomas ablation.

Objective To study the correlation between the ADC value and Fenh value,Senh value based on DWI and DCE-MRI, by measuring them in sacroiliac joint bone marrow of healthy volunteers.Methods 21 healthy volunteers performing the sacroiliac joint MR were involved.ADC value based on DWI,and TIC based on DCE-MRI were measured.The relationship of ADC values with Fenh,Senh values and peak to time,Tmax values were analyzed.Results The differences of the measured ADC values on both sides of the sacroiliac joint bone marrow region were not statistically significant (P>0.05).There were three types of TIC curve,8.3% (7/84)Ⅰ type,8.3% (7/84)Ⅱ type,83.3% (70/84)Ⅲtype;Fenh,Senh average values were within 20% 0.05).There was a positive correlation between ADC value and Fenh value in bone marrow region of sacroiliac joint.Conclusion This study determined the average value of ADC and Fenh,Senh in normal sacroiliac joint bone marrow area,the positive correlation between ADC value and Fenh value is a new thought and may be a new method of diagnosising the early disease of sacroiliac joint.

Objective To investigate expression changes of Tau protein in retinal ganglion cells (RGCs) and oligodendrocytes (Ols) after stretch injury in rats and explore the relationship of Tau protein with pathological changes after axonal injury. Methods Morphological changes of optic nerves, RGCs and OLs after stretch injury were examined under light microscope in control group, stretch only group, heat stress only group and heat stress pretreatment plus stretch group. The expressions of Tau protein in RGCs and OLs after heat stress and/or stretch injury were observed by using immunohistechemical stai-ning. Results Pathological changes of axons, RGCs and OLs were identified morphologically or quan-titatively after stretch injury to the optic nerves, which was significantly ameliorated through pretreatment with heat stress plus stretch injury. The expressions of Tau protein in RGCs and OLs were increased in stretch only group. There was no significant expression change of Tau protein in heat stress only group. Expression of Tan protein was obviously decreased in heat stress pretreatment plus stretch group. Con-clusions Both neurons and glial cells are involved in pathological process after axonal injury. The ex-pression changes of Tau protein are probably related to delayed axotomy and neuron apoptosis. Heat stress can relieve the impairment of cystoskeleton through decreasing and delaying the expression of Tau protein.

Objective To observe the effect of buspirone on ataxia symptom after stroke.Methods 30 patients with ataxia after stroke were treated with buspirone,other 30 patients without buspirone as controls.Before and after treatment,they were assessed with ataxia-scale.Results The buspirone can significantly improve the ataxia of patients with stroke compared with the controls(P<0.01).Conclusion Short-term treatment with buspirone can improve the ataxia symtoms after stroke.

Objective Aim to explore the effect of hyperglycemia on the expression of glucose transporter 1 (GLUT-1)in rats at the acute phase of traumatic brain injury.Methods Adult male SD rats were randomly divided into 3 groups: normal control group, traumatic brain injury group and insulin treated group.The blood glucose concentration of the rats was measured before and after injury.The expression of GLUT-1 gene and protein in the injured and uninjured cortex was detected by reverse transcription polymerase chain reaction (RT-PCR) and western-blot.The apoptosis in the injured and uninjured cortex were detected by TUNEL staining.Results The blood glucose concentration increased markedly in traumatic brain injury group.The expression of GLUT-1 gene and protein in the injured cortex decreased in both the traumatic brain injury group and the insulin treated group.In contrast, the expression of GLUT-1 gene and protein significantly increased at 12 h, 24 h, 48 h, 72 h after injury in the insulin treated group compared with control(P＜0.01).The number of apoptotic cells in the insulin treated group were significantly larger than that in the traumatic brain injury group at each time point(P＜0.01).However, The number of apoptotic cell death remained unchange in the uninjured cortex in each group(P＞0.05).Conclusions The hyperglycemia after traumatic brain injury may increase the apoptotic cells in the injured brain through decreasing the expression of GLUT-1.

BACKGROUND: How to solve the source of material substitute for repair of urethral dcfoct and improve the blood supply of new urethra has become a critical problem in the urethral repair and reconstruction.OBJECTIVE: To investigate the effects of endothelial progenitor cells (EPCs) on improving blood circulation in the new urethra following urethral defect repair.DESIGN,TIME AND SETTING: In vivo tissue engineering experiment,performed at the Laboratory of Deparanent of Surgery,First Affiliated Hospital of Zhengzhou University between January 2006 and February 2008.MATERIALS: Thirteen 3-5-month-old male Japanese rabbits were included for this study.Of them,one was used for preparation of bone marrow mononuclear cells,and the remaining twelve rabbits were divided into EPC repair group (n=8) and model group (n=4).METHODS: Under the aseptic condition,bone marrow was taken from the rabbit bilateral anterior superior lilac spine.Mononuclear cells isolated by Percoll method were induced in vitro using medium supplemented with vascular endothelial growth factors (VEGFs) and bovine basic fihroblast growth factors.When covering the whole bottom of culture flask,the mononuclear cells were digested with trypsin for passage.Animal models of urethral defect were developed in the two groups.One piece of aseptic fresh acellular human amnion (1 cm2) was sutured to each defected urethra using 0/6 DG suture for forming urethra.In the EPC repair group,1010/L passage 3 rabbit bone marrow mononuclear cell suspension was injected to two anastomotic stomas of the new urethra,0.1 mL for each stoma.The subcutaneous tissue was interruptedly sutured to the formed urethra using 0/6 DG suture.In addition,0.5 mL bone marrow mononuclear cell suspension was added to the region between each anastomotic stroma and newly repaired urethra.The same procedure was performed in the model group except that bone marrow mononuclear cell suspension was replaced by cell-free medium.At weeks 4 and 12 after surgery,paraffin sections of urethral tissue were made.MAIN OUTCOME MEASURES: Identification of cellular morphology; vascular regeneration of urethral tissue after urethral defect repair.RESULTS: After surgery,rabbit bone marrow mononuclear cells adhesively grew in vitro.Four days later,these cells exhibited rapid clone-like growth.Ten days later,they had typical slabstone-like change,presenting with strip-shaped and bundle-shaped growth.The phenotype of cultured cells gradually turned from CD34+/CD 133+/CD31+ to CD34+/CD 1337CD31+.At weeks 4 and 12 after surgery,the number of regenerate,d blood capillaries in the urethral tissue was significantly greater in the EPC repair group than in the model group (t=-9.034 to 5.985,P ＜ 0.01).CONCLUSION: Rabbit bone marrow mononuclear cells-differentiated EPCs can apparently improve local blood circulation in the urethral defect repair.