Résumé
Radiation-induced lung injury (RILI) is a common complication after radiotherapy for thoracic tumors.It is one of the most urgent problems to explore the optimal animal model and evaluate the effect for basic research and drug intervention along with the extensive studies of radiation pneumonia.By reviewing the literatures published in recent 10 years,the selection of irradiation site,determination of irradiation dosage,irradiation method and effect evaluation were statistically compared among different RILI animal models,aiming to explore a stable method of establishing the animal model with RILI and identify a definite effect mechanism.It provides a reliable approach for basic research and drug development to prevent and mitigate the incidence and development of RILI.
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OBJECTIVE To study the influence of focused ultrasound on the morphology of nasal mucosa in sheep. METHODS A model CZB ultrasound therapeutic system for rhinitis, developed and produced by Chongqing Haifu(HIFU)Technology Co.,Ltd.,Chongqing China,was used in this study. Linear scans were performed on bovine liver in vitro under different scan parameters, and the biologic focal field(BFF)was detected to evaluate if it met the requirements of designed. The nasal mucosa of inferior turbinate of sheep was exposed with the same scan parameters under the observation of nasal endoscope, and morphological changes of the nasal mucosa were observed by gross examination, light and electron microscopes. RESULTS This study revealed that the designed biological focal field in bovine liver in vitro could be obtained under the scan parameters mentioned above. Linear scan with the same condition,there was no obvious change in appearance and color of the treated nasal mucosa in the inferior turbinate of the sheep. However,3 days after treatment,there was an increased secretion in the nasal cavity,which recovered 7 days post-treatment. Light microscopic examination 3 days after exposure showed that the epithelia of the nasal mucosa was intact and there was diffused distribution of spot coagulated necroses in the subepithelia layer of treated nasal mucosa. Degeneration of vascular endothelial cells and thrombosis of blood vessels were found in the coagulated necrosis region. Besides,degeneration or necrosis of nerve cells was induced,and glandular cells werepartially or completely damaged. The structure of epithelial goblet cells and ciliated cells in the treated nasal mucosa appeared to be normal under the observation of electronic microscope. At the seventh day after treatment,signs of tissue regeneration such as hyperplasia of collagen fiber were found in the coagulated region,and the necrosis tissue began to dissolve and was absorbed at the 14th day post-treatment. CONCLUSION Under the above scan parameters,the energy of focused ultrasound could be deposited specifically at the subepithelia layer,and to ablate the targeted nasal mucous tissues which are rich in blood vessels,nerves and glands. There were no damage to the non-target area such as epithelial layer,which could maintain the normal structure and biological function of mucociliary of nasal mucosa.
Résumé
<p><b>OBJECTIVE</b>To observe the therapeutic efficacy of Qingxue Granules (QX) in treating postnephrotransplant erythrocytosis (PNTE).</p><p><b>METHODS</b>Twenty patients were randomly divided into two groups according to the randomized table. QX was given to patients in the TCM treated group (QX group) and Enalapril given to patients in the Western medicine treated group (WM group), and the clinical efficacy in the two groups was observed. Results In the QX group, 3 patients got markedly effective, 2 effective, 2 improved, 1 ineffective, 1 dropped from the treatment, 1 absconded, with the total effective rate of 77.78%. The corresponding numbers in the WM group were 4, 2, 2, 1, 1 and 66.67%. There was no significant difference in comparison of the efficacies between the two groups (P > 0.05). There was no difference between the Intent-to-Treat population and Per-protocol Pouplation after statistical management of lost cases.</p><p><b>CONCLUSION</b>It has proved that QX has the same therapeutic effects as classic Western medical treatment in treating PNTE. The reliability and scientificity of QX was proved by Intent-to-Treat analysis.</p>