The CT features of 50 cases of primary bronchogenic carcinoma of different histologic types, including 34 cases of squamous carcinoma (SC) of which 26 of the central trpe, 8 of peripheral; 4 cases of undiffcrentiated small cell carcionma(USCC)which were all of the central type, and 12 cases of adeno-carcionma of the peripheral type, were reviewed in the attempt to find out the relationship between the histologicatypes and clinical behaviors of the carcinomas. The central squamous carcinomas usually show a transbronchial growth to form masses in the lung parenchmas; when it extends along the bronchial wall, a branching mass in the pattern similar to the bronchial branches can be seen; when it extends along the vascular sheath, there will be accentuation of the vascular markings around the mass; and it can also spread via the lymphatics to the mediastinum or to the pleura retrogradely. The primary lesion of USCC usually is relatively small in size, but its metastatic lesions can fuse together to form a huge mediastihal mass. Consequently its diagnosis ran only be made on the findings of bronchial stenosis or obstruction. Bronchogenic carcinoma of the peripheral type usually arises from the wall of small air passages to form a solid mass in the parenchyma. Lobulations or protuberances of the mass with brushy margin and pleural indentation suggest the diagnosis. Deep lobulations with long brushy projections of the mass and bronchovascular convergence are characteristic features of an adenocarcinoma.

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.

The major progress on the study of etiology of the Hirschsprung's disease is the genetic factots and the aherations of microenvironment in primarily embryogenic period.The genetic factors comprise of RETGDNF system.EDNRB.EDN3 system,and many other genes involving in the formulation of the tormer two svstems.such as SOX10,NRG-1, FoxD3,PHOX2B,HOXB5,ZFHXIB,all of which file essencial for the migration and differentiation of neural crest cells(NCC).The alterations of microenvironment in primarily embryogenic period include interstitial ceLls of cajal(ICC),cell adhesion molecules(CAMLl),Ca2+ and so on.Definitely,CAML1 plays as the basis of NCC's migration and differentiation,and the decline of the Ca2+dependent channel's expression brings about the anolnaloug contraction of smooth muscle.

Objective To investigate the protective effects of Hypericum attenuatum Choisy. extract on experimental myocardial ischemia injury in mice. Methods The myocardial ischemia injury model was induced by isoproterenol in mice. The survival time of mice,the activities of LDH and CK in serum,the activity of SOD and level of MDA in myocardium were all measured. Results Compared with model group,Hypericum attenuatum Choisy. extract can prolong the survival time of mice after injured by isoproterenol in the close normobaric hypoxia,and decrease the activities of LDH and CK in serum. It can also increase the activity of SOD and decrease the level of MDA in myocardium. Conclusion Hypericum attenuatum Choisy. extract has protective effects on myocardial ischemia induced by isoproterenol in mice.

Objective To establish a quantitative method for Astraloside in Xingnao Zaizao Capsules by HPLC-ELSD. Methods HPLC-ELSD separation was achieved on Phenomenex Gemini C18 column (250 mm?4.60 mm, 5 ?m) and mobile phase consisted of acetonitrile-water (36∶64). The flow rate was 1.0 mL/min, drift tube temperature was 105 ℃, and gas flow rate was 2.7 L/min. Results The calibration curve was linear in the range of 0.486～2.43 ?g (r=0.999 7). The average recovery rate was 100.5% (n=6), RSD was 0.3%. Conclusion The method is rapid, accurate and reliable, and the method can be used as the quality standard for Xingnao Zaizao Capsules.

Aim To study the anti-tumor activity of PQEP and it s immunomodulation effect.Methods The pharmacological activity of PQS was measured using mice transplanted H22 and MFC tumor. Tumor-inhibiting a ctivities, weight of immune organ, nature killer cells activity and lymphocyte p roliferation ratio were investigated.Results PQEP showed antitumo r and immunomodulation activities in different degrees.Conclusion The anti-tumor activity and immunomodulation are closely linked. The anti- tumor effect of PQEP due to activation of the immunocompetence of the body.

Aim This research was performed to study the anticancer effects of Panax quinquefolium effective parts (PQEP) in human chronic myeloid leukemia (K562). Method After K562 cells were routinely cultured,MTT assay was performed for cytotoxicity test. Cytotoxicity of PQEP (6.25～400 mg?L -1) in K562 cells was increased in a dose-and time-dependent manner. To explore the mechanism of cytotoxicity, we used several measures of apoptosis to determine whether these processes were involved in PQEP-induced leukemic cell death.Results PQEP induced the cell shrinkage, cell membrane blebbing, chromosomes condensation and DNA fragment. In addition, the flow cytometric analysis revealed PQEP (10～400 mg?L -1) dose-dependently increased apoptotic cells with hypodiploid DNA contents. Conclusion These results indicate that PQEP can control leukemic K562 cells through apoptosis and may have a possibility of potential anticancer activities.

Glycogen storage disease (GSD) is a rela-tively rare inherited metabolic disease. However, its relative rarity implies that no metabolic centre has experience of large numbers of patients and experience with long-term manage-ment is limited. In addition, there is wide variation in meth-ods of medical treatment. With the development of medical care, life-expectancy in glycogen storage disease (GSD) has improved considerably. With ageing liver adenoma may de-velop which will bring about several complications-compres-sion, hemorrhage, or even transformation into carcinomas-and needs immediate intervention. In this paper, reviews for the mechanism and surgical intervention of GSD are presented.

Objective To explore the change of function of adrenal cortex in patients with hyperthyroidism to provide theoretical evidence for clinical practice. Methods The reaction of adrenal cortex to small dosage of ACTH was detected and compared with each other in normal controls,in patients with mild hyperthyroidism,and patients with severe hyperthyroidism. Results The reaction to small dosage of ACTH was statistically different among the three groups \[F=278.3(15 min), 274.2(30 min), 469.8 (60 min), 273.3(min),866.2(AUC),P

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