Text mining provides a new approach for drug repositioning, and the emerging databases and their corresponding tools provide more and more convenience for drug repositioning by text mining.The methods and tools for studying drug repositioning by text mining and their successful application examples were thus described in this paper in order to provide reference for the researchers interested in this field.

Objective To study the effects of interferon gamma (IFN-?) on pulmonary fibrosis induced by bleomycin in rats and the related mechanisms. Methods A total of 90 rats were randomly divided into 3 groups (n=30 in each group): normal control group, pulmonary fibrosis group, and IFN-? treated group. On days 1, 3, 7, 14, and 28 after bolemycin treatment, 6 rats in each group were sacrificed. PO 2 was determined. The lungs and serum were collected for histopathological and electron microscopic examinations. The contents of transforming growth factor ? 1 (TGF-? 1) and fibronectin (FN) were determined by immunohistochemistry, and the contents of IL-4 and surfactant protein A (SP-A) were detected by ELISA and Western blotting, respectively. Results PO 2 level increased significantly (P

Co-occurrence network of major MeSH terms and all MeSH terms was constructed respectively with MEDLINE-covered pharmacological literature as its example.The degree, closeness and betweenness of centrality in different nodes of the two co-occurrence networks were analyzed , the distribution of scale-free properties in the two co-occurrence networks was tested, the small-world effect of the two co-occurrence networks was identified by comparing their overall properties ( average distance and clustering coefficient ) , which showed the scale-free properties and small-world effect of the two co-occurrence networks.The co-occurrence network of all MeSh terms could thus be used in analysis of network properties while that of major MeSH terms could thus be used in analysis of subject contents.

After the basic properties of literature-related citation network, co-authorship network and co-words network were analyzed and the advances in their application research were summarized in aspects of their construc-tion methods, size and research depth, it was pointed out that article similarity networks could be constructed using the article similarity algorithm, and their basic properties and features were analyzed.

Olfaction is one of the ancient sensing capabilities and plays an important role in monitoring environment. Although olfactory loss is common, it's obviously underappretiated by medical community generally. In order to help patients with those problems, the author gives an brief review about the characters of common etiologies, treatment and prognosis of Olfactory Dysfunction. It's concluded that most usual causes resulting in dysos- mia are upper-respiratory-tract infections, trauma, and chronic rhinosinusitis; and our understanding of the olfaction mechanism grows, but frustratingly, aside from the possible therapeutic potential of systemic steroids, no method has been proved to have solid evidence for curing olfactory loss; so we need more new basic and clinic research to develop effective therapeutic intervention.
Chronic Disease ; Humans ; Olfaction Disorders ; etiology ; therapy ; Prognosis ; Respiratory Tract Infections ; Sinusitis ; Smell

Objective To study the expression of HIF-1αand and its correlation with gastric cancer recurrence, and to identify its prog-nosis evaluation in gastric cancer recurrence. Methods 80 patients with gastric cancer recurrence after radical surgery were selected as the observation group, and 50 patients without gastric cancer recurrence 5 or more than 5 years after surgery were selected as the control group. The immunohistochemical situation and expression of VEGF of the two groups were compared, and the correlation of HIF-1αand VEGF and gastric cancer recurrence were analyzed. Results The positive expression rate of HIF-1αand VEGF were 77. 50% and 73. 75% respectively in the observation group, which were significantly higher than 12. 00% and 10. 00% in the control group. Univariate analysis showed that the related indices such as degree of differentiation, depth of invasion, lymph node metastasis, vascular invasion, and TNM clinical stage were associated with VEGF expression and positive expression of HIF-1α. The Spearman correlation analysis showed that HIF-1α and VEGF was positively correlated (r=0. 458,P=0. 000). 1-year survival rate of HIF-1α-positive group was 45. 16%, and the average survival time was (8. 62 ± 2. 32) months, which was significantly lower than 77. 77% and (18. 96 ± 3. 14) months respectively in the negative group. Cox risk model analysis showed that HIF-1αand VEGF expression were high risk factors for gastric cancer recurrence. Conclusion HIF-1αand VEGF expression have a very colse correlation with gastric cancer recurrence, and it can be used as evaluation of gastric cancer recurrence and prognosis.

Objective:To compare the DNA character with in cholesteatoma tissues with that in normal skin.Method:DNA content within 25 cholesteatoma tissues and 10 normal postauricular skin was measured with flow cytometry.Result:The content of cholesteatoma tissues and postauricular skin specimens are a normal euploid.The cell number during S phase of cholesteatoma(10.9±2.32)% was higher than that in normal skin(7.31±2.82)%.Conclusion:Although the cholesteatoma has a very high proliferating character,the result suggest it isn′t a malignant tumor.

The pharmacodynamics of prostaglandin E1 (PGE1) administered by different routes to rats was investigated in this paper. The hypotensive effect of PGE1 was used as an index of drug efficacy, pharmacodynamic parameters such as time to reach peak effect (Tmax), maximal percentage of blood pressure decrease (Emax, %), duration of effect (Td), and the area determined after PGE1 given to rats intranasally, sublingually, intraperitoneally (ip),and intramuscularly (im), separately, and compared with those obtained from intravenous (iv) administration. Similar to iv route, the pharmacodynamic parameters of PGE1 from the other administration routes, Emax, Td and in particular AUC values were all increased with increasing doses, showing dose-efficacy relationship. Tmax was found to be approximately 3-4 min for nasal route, 3-8 min for im, 6-8 min for ip and 12-30 min for sublingual route, separately. Thus, the order of magnitude of absorption rate of the drug was as follows: nasal≈im＞ip＞sublingual. If the pharmacological bioavailability (PF) for each administration route was used as a tentative measure of drug absorption extent, the order of magnitude of absolute bioavailability appeared as follows: nasal＞im≈ip＞sublingual. Furthermore, the interindividual difference was found to be larger for im and ip route than that for nasal and sublingual route. These results indicate nasal and sublingual routes are two promising routes for the systemic delivery of PGE1 in clinical applications.

The expression of proliferating cell nuclear antigen (PCNA) and B-cell lymphoma/leukemia-2 gene (Bcl-2) was detected in 25 cases of cholesteatoma tissues and 10 cases of normal skin by using immunohistochemical technique. The results showed that the PCNA index of cholesteatoma tissues was higher than that of normal skin, but Bcl-2 was not expressed in cholesteatoma tissues and normal skin. The PCNA index was correlated with the aggressiveness of cholesteatoma. It was suggested that PCNA could be considered to be a prognostic marker and an indicator of aggressive behavior in cholesteatoma. Although the cholesteatoma had a very high proliferating character, it wasn't a malignant tumor.

ObjectiveTo study the transcript atlas of cell immunity-associated genes in 8 liver cell types including hepatocytes, bile duct epithelial cells, oval cells, hepatic stellate cells, sinus endothelial cells, Kupffer cells, pit cells and dendritic cells from the rat regenerating liver. Methods Isolation of rat 8 liver cell types, detection of their genes expression change and the prediction physiological activities were accorded to cluster program, and the methods of bioinformation and systematic biology, and their gene expression patterns were analyzed by Microsoft Excel software. Results A total of 40 blood coagulation-associated genes yielded the meaningful expression changes in liver regeneration. Serpine1, a2m in eight liver cell types, vwf, klkb1 in seven liver cell types other than Kupffer cells, and other genes in the two or more liver cell types yielded the meaningful expression changes. It suggested that the synthesis of kallikrein and prothrombin、the formation of thrombin were enhanced at the priming and progressing phases of liver regeneration. The biological activities, such as fibrin monomer aggregated into fibrin polymers, were elevated at termination phase.Conclusion The rat liver regeneration is closely associated with the blood coagulation.