Objective To study the expression and significance of indoleamine-2,3-dioxygenase(IDO)in non-small-cell lung cancer(NSCLC).Methods Thirty-eight cases of lung cancer tissues and 10 cases of paracancerous normal lung tissue were collected.The semiquantitative immunohistochemistry was used to detect the positive rate of IDO and fluorescent quantitative PCR to detect the level of IDO mRNA in the lung tissues respectively.Results The positive rate of IDO and the level of IDO mRNA in NSCLC group were significantly higher than in paracancerous normal lung tissues(P＜0.05).There was no significant difference in the positive rate of IDO and the level of IDO mRNA between the adenocarcinoma group and the squamous cell carcinoma group(P＞0.05).Statistically,there was significant difference in positive rate of IDO and the level of IDO mRNA among low,middle and high differentiation groups(P＜0.05).There was significant difference in positive rate of IDO and the level of IDO mRNA between the lymph node metastasis and non-metastasis groups(P＜0.05).Conclusion The high expression of IDO in NSCLC is correlated with the degree of differentiation and the metastasis of lymph nodes,but not with the pathological types.

Objective To investigate the necessity to test the hearing of patients whose initial symptom is tinnitus with pure tone audiometer. Methods To analyze the results of pure tone audiometer of 218 tinnitus patients.Results Among 218 cases of tinnitus patients,a total of 123 patients with abnormal hearing,among 95 cases of patients with normal hearing, except for 50 cases of tinnitus, no other cause of disease. Conclusion Among the normal hearing tinnitus patients, we should do further hearing test for them if they are not identified a clear cause of disease,such as auditory brainstem response,otoacoustic emission and other necessary checks to clear the reasons for tinnitus or the position of the unusual auditory system. It is important for early diagnosis and treatment of tinnitus. But the pure-tone audiometer should be a routine examination when tinnitus patients come for the first visit.

Objective To observe the influence degree of morphology after treating the rabbit's nasal muco-sa with focused ultrasound technology.Methods By using the High Intensity Focused Ultrasound,a straight line scan for a rabbit's turbinate under the certain dose parametem had been done.And then the rabbit's turbinate was treated with low temperature plasma radiofrequency ablation.A comparison test after one month and three months was carried out.A comparison between the changes of rabbit mucosa morphological of the two kinds of treatment methods through general morphology and light microscopy observation had been taken.Results The experimental results showed that there were no significant changes in appearance and color between the use of focused ultrasound treatment of rabbit's inferior turbinate and scan the rabbit's inferior turbinate under certain dose parametem after one month and three months later.Under the lisht microscope showed a complete rabbit nasal epithelium.And after the treatment by using low-temperature plasma mdiofrequeney ablation instrument,the rabbit's turbinate became narrow,gray in color and there were some secretions compared witk normal rabbit's turbinate.Under the light microscopy,the rabbit nasal epi-thelium showed broken and part of the conical slices completely disappeared.Conclusion Under certain parameters,the focused ultrasonic energy could not undermine the nasal epithelium;thereby the function of mucociliary system is fully retained