Objective To evaluate the efficacy and safety of tiotropium bromide in treating stable mild and moderate chronic obstructive pulmonary diseases. Methods A randomized,double-blind,parallel comparison clinical trial was conducted in 40 patients with COPD. Twenty patients in tiotropium bromide group were treated by tiotropium bromide powder,and another twenty patients in controll group were given ipratropium,in contrast. The spirometry of both groups was conducted. 4 weeks after treatment. Results The forced expiratory volume in one second ( FEV1 ) and forced vital capacity(FVC) in two groups were significantly increased after treatment( P<0.01 ). The increase of FEV1 in tiotropium bromide group was higher than that in controll group after 4-week. There was no significant differ-ence in rescue medication consumptions. The incidence of adverse effects has no statistical difference between two groups. Conclusion Tiotropium bromide is an effective and safe bronchodilator in treating patients with COPD.

Objective To investigate artemin and its receptors GFRα3 expression in human pancreatic ductal adenocarcinoma and its significance. Methods Expression and distribution of artemin and GFRα3 in 100 cases of human pancreatic ductal adenocarcinoma(PDAC) and 40 cases of normal pancreatic tissue were detected by immunohistochemistry and RT-PCR, quantitative RT PCR. Relations of artemin and GFRα3 with clinicopathological characteristics, especially nerve invasion were analyzed. Results Nerve invasion was detected in 64 out of 100 cases of PDAC, and the rate of nerve invasion was 64%. The ratio of expression of Artemin, GFRα3 protein in PDAC/normal pancreatic tissue was 2.697 ± 0.231 and 2.599 ± 0.588; the ratio of expression of Artemin, GFRα3 mRNA was 7.01 and 4.63. Artemin and GFRα3 expression were associated with tumor location, differentiation degree, TNM staging, nerve invasion node metastasis, but it was not associated with age, sex and tumor size. Artemin and GFRα3 expression was more positively expressed in cancer cells close to nerve tissue than cells far from nerve tissue. Conclusions Artemin and GFRα3 were involved in the development of pancreatic cancer and their high expression was closely related to perineural invasion.

Objective To investigate nerve growth factor (β-NGF) and its receptors expression in human pancreatic ductal adenocarcinoma. Methods Expression and distribution of β-NGF, tyrosine kinase A (TrKA) and P75NGFR were detected in operation tissue specimens of pancreatic ductal adenocarcinoma with immunohistochemistry and real-time PCR. Relations of β-NGF and its receptors with clinicalpathological characters, especially nerve invasion were analyzed. Results β-NGF and TrKA expression are higher in pancreatic adenocarcinoma than normal pancreas, and the differences are significant (P < 0. 01). Β-NGF and TrKA expression are associated with the differentiation grades(DG), lymphatic node metastasis, nerve invasion and surgical pathological stages. Poorer of DG and later stages, more expression of β-NGF and TrKA. Β-NGF and TrKA expression have positive correlations. Β-NGF, TrKA and P75NGFR mRNA expression have significantly increased 3.84,4. 23 and 2. 41 times than normal tissues by real-time PCR, respectively. Conclusions β-NGF and TrKA might play potential rules in carcinogenesis for pancreatic cancer,have affinity with clinicopathological characters of pancreatic cancer. Β-NGF and TrKA may have mutual effect in signal transduction leading to perineural invasion of pancreatic carcinoma.

Dizziness or vertigo is a common clinical symptom, and its underlying etiology is complex. Many clinicians are confused about its diagnosis and treatment. This article presents a case about chronic vestibular syndrome. And case appreciation and academic discussion are conducted by well-known domestic neurologists and otologists, so as to provide a good thinking model and basic ideas for the diagnosis and treatment of dizziness or vertigo, hoping to further improve the diagnosis and treatment level among clinicians.
Humans ; Dizziness/therapy* ; Vertigo/etiology* ; Vestibular Diseases/complications* ; Otolaryngologists

This study sought to producte alginate sodium microsphere for controlled release bovine serum albumin(BSA) and to investigate the protein release profile of the BSA-alginate sodium microsphere in vitro, which threw some light on the angiogenesis of tissue engineering bone with vascular endothelial growth factor (VEGF) controlled release under stress. The BSA-alginate sodium microsphere was fabricated with W/O emulsification and ion cross-linking method using alginate sodium. The appearance, microsphere diameter and envelopment rate were detected, and the release characteristics of the BSA-alginate sodium microsphere in vitro was investigated. The alginate microsphere was found to be spherical in shape and evenly distributed. Its mean grain diameter was determined to be 230 +/- 60 microm, carrying capacity 80.3 microg/mg and envelopment rate 61%. Smooth controlled release in BSA-alginate sodium microsphere was shown to last more than 2 weeks. Alginate sodium proved an excellent biodegradable material for protein or polypeptide controlled release. The emulsification and ion cross-linking method was noted to be simple; it was propitious to the structural and functional stablility of protein or polypeptide, thus leading to the prolonged efficacious time of the microsphere.
Alginates ; administration & dosage ; chemistry ; Animals ; Cattle ; Delayed-Action Preparations ; chemical synthesis ; Drug Carriers ; Glucuronic Acid ; administration & dosage ; chemistry ; Hexuronic Acids ; administration & dosage ; chemistry ; Microspheres ; Serum Albumin, Bovine ; administration & dosage