Objective To explore a simple and suitable method for stretch preparation of subcutaneous loose connective tissue in rabbits . Methods Three rabbits were continuously performed with 10-12ml of trypan blue saline solution(10g /L) by intraperitoneal injection once a day .The subcutaneous loose connective tissue was collected for stretch prepararation on the fourth day and fixed with a formalin-alcohol salution for 6 hours.The tissue was put into aldehyde fuchsin, nuclear fast red and eosin for staining .Washing with tap water was taken after every step .Finally, conventional dehydration , clearing and mounting were applied .Results Macrophages were irregular in sharp and distributed among fibers.Many engulfed blue granules were observed within the cytoplasms .The nuclei were stained in red .The color of elastic fibers showed purple or blue-violet at the time point of aldehyde fuchsin staining between 30-40 minutes.The color of collagen fibers was light red .Conclusion The present method is simple , stable and reliable for stretch preparation of subcutaneous loose connective tissue in rabbits .

OBJECTIVE:To study the content and feature of licensed pharmacist qualification examination abroad in order to provide the evidence for the reform of licensed pharmacist qualification examination in China.METHODS:The relevant literature was referred to and a comprehensive analysis was made.RESULTS &CONCLUSION:Strict control over the inclusion criteria in the examination should be strengthened in China.The content and the types of questions should be adjusted to test the real competency of the examinees.The targeting role of the examination should be reinforced,and monitoring as well evaluating system should be established to upgrade the degree of openness.Foreign graduated pharmacological students and pharmacists should be allowed for licensed pharmacist qualification examination in China and registered.The association of licensed pharmacists should play its full potentials.

OBJECTIVE: To study the anti-inflammatory effect of the aqueous extracts of Sophorae tonkinensison. METHODS: The auricle edema was induced by xylene in the mice to measure the swelling of ear; the experimental peritonitis of mice and scytitis of rats were induced to measure the absorbability of the effusion. The ear swelling and capillary permeab-ility in drug-treated group was compared with those in the normal control group and hydrocortisone-intervented model group.RESULTS: Mice's swelling induced by xylene was lessened by aqueous extracts of Sophorae tonkinensison(high or med-ium dose), which also showed remarkable inhibitory effects on the experimental peritonitis of mice and scytitis of rats (P

To explore the spatiotemporal patterns of the neuronal excitatory propagation in vestibular nucleus, brainstem sections were prepared from postnatal 1～5 day mice, and stained with RH155, which was an light absorbent voltage sensitive dye, for 20 minutes. A multiple site optical recording system was used for optical imaging of the evoked responses after electrical stimulation of the vestibular nerve. After stimulation of the vestibular nerve, optical responses were revealed in the vestibular nucleus. There was propagation of excitation in both ipsilateral vestibular nucleus and contralateral vestibular nucleus after ipsilateral vestibular nerve stimulation. These optical signals were wave length dependent. The optical signals consisted of two components: the spike like fast signal and long duration slow signal. All the responses were abolished by 20?mol/L tetrodotoxin (TTX). The effect of TTX was irreversible. The slow signals were entirely eliminated after the application of Ca 2+ free solution. The effect of Ca 2+ free solution was reversible. These results suggested that the slow signal might be postsynaptic excitation potential. The present study indicated that the use of optical recording to reveal visually the synaptic transmission of afferent input in vestibular nucleus in the brainstem was feasible.

Objective To explore the spatiotemporal patterns of the glutamatergic transmission in vestibular nucleus. Methods The brainstem slices were prepared from postnatal 1-5-day mice. The slices were stained with RH155, which was a light-absorbent voltage-sensitive dye, for 20 min. A multiple-site optical recording system was used for optical imaging of the evoked responses after electrical stimulation to the vestibular nerve. Results The spatiotemporal patterns of excitatory propagation in VN were illustrated. The effects of glutamate antagonist in VN after being bathed in APV (100mol/L, NMDA receptor antagonist) or CNQX (10mol/L, non-NMDA receptor antagonist) were observed in the postnatal 1 to 3 day-mouse brainstem slices. Our data showed that the percentage of APV sensitivity ranged from 50% to 84.2%, with a mean of 64.9%?9.06% (n=18). The percentage of CNQX sensitivity ranged from 15.8% to 50%, with a mean of 35.1%?9.06% (n=18). Conclusion The study indicated that the use of optical recording for revealing visually the synaptic transmission of afferent input in VN in brainstem was feasible. Both NMDA and non-NMDA receptor were sensitive to the neuronal transmission of EPSP in VN, but the NMDA sensibility to EPSP was higher than that of non-NMDA in newborn mice.

Objective To construct the bFGF/Math1 f usion gene expression vector and to investigate its expression in the cochlea of rat. Methods Using the recombinant DNA technique to construct the bFGF/Math1 gene expression vector and the restriction enzyme analysis to ide ntify the correct construction. The mRNA expression was detected by the RT-PCR m ethod after being transfected into the cochlea of rat using lipofectin reagent. Results The recombinant was correct and the bFGF/Math1 wa s expressed in the cochlea of rat.Conclusion The PRK5-bFGF-Math1 eukaryotic expression plas mid was successfully constructed and the bFGF/Math1 was expressed in the mammali an cochlea.

BACKGROUND: The sensorineural deafness occurs as a result of loss of inner ear hair cells in the cochlea or of their primary afferent the spiral ganglion neurons. Stem cells to restore hearing following inner ear cell death has become a focus in recent years.OBJECTIVE: To summarize research progress in stem cells differentiating into inner ear cells in vitro and in vivo and to review the achievement in stem cells replacing inner ear cells in treating sensorineural deafness.METHODS: With "inner ear, stem cells" as key words, a computer-based online search of Pubmed and CNKI was performed for articles published from January 2000 to August 2009. RESULTS AND CONCLUSION: A total of 170 articles were collected, and experimental studies and review articles on stem cells in sensorineural deafness were included, while repetitive articles were excluded. Finally, 32 articles were summarized and analyzed. Different types of stem cells have the capacity to differentiate into inner ear cells. They can differentiate into neural cell types. Stem cells can live and migrate, differentiating into cell types of the sites of injury. It provides a therapy strategy to restore hearing following sensorineural deafness by he capacity of stem cells differentiating into inner ear cells. However, it remains further investigation how to function following cell differentiation and how to form the appropriate neural pathways by stem cell transplantation in sensorineural deafness.

The resistance mechanism of gliomas to chemotherapy and radiotherapy is a complex network of many signaling pathways. It remains unclearhow the pathways interact with each other and how they were regulated. Recent studies have shown that DNA damage checkpoint pathway ( ATM、 ATR、 Chk1、 Chk2、 Rad17、 Radl 、Rad9、Hus1 et al. ) plays an important role in cell proliferation、genomic stability、tumorigenesis and the resistance to chemoradiotherapy of tumors. Inhibiting DNA damage checkpoint can increase tumor sensitivity to chemoradiotherapy and therefore improve the therapeutic effect. We review here the role of ATM in chemoradiotherapy resistance of gliomas and its associated mechanisms.

Objective To investigate and analyze the state of injury and treatment for the patients with maxillofacial injuries in Wenchuan earthquake, and search for more effective methods for treating maxillofacial injury. Methods One hundred and sixty-five patients wounded in Wenchuan earthquake were admitted to authors' hospital, and they received specialized diagnosis and treatment. In this paper, the emphasis was put on those patients with severe ear-nose-throat and maxillofacial injuries. Based on the analysis of the state of injuries, the patients were treated with debridement and suture, reshaping and suture, reduction and fixation of fracture, or local or systematic anti-infection therapy. All the treated patients were followed up 2 weeks after treatment. Results Thirty-three of the 165 admitted patients suffered from various degrees of maxillofacial injury (20.0%), including 10 cases of ear injuries (6.1%), 8 cases of nasal trauma (4.8%) and 2 cases of lip laceration (1.2%). All the wounds healed by primary intention after the treatment with no disfiguration. 8 cases of nasal sinus and zygomatic fractures (4.8%) and 5 cases of mandibular fracture (3.0%) recovered nicely after the treatment. No trauma was found in throat, neck, trachea and esophagus. 6 patients (3.6%) were complicated with infection after injury (onset of infection outside of hospital). There was no death. Conclusion Patients with maxillofacial injury should receive early and appropriate treatment. Besides restoration of function, it is also important to restore the physiognomy

Objective To investigate the expression of Smad5 gene in the cochlea and to identify its location. Methods Reverse transcription polymerase chain reaction (RT-PCR) was employed to detect the expression of Smad5, the in situ hybridization and the immunohistochemical technique were used to localize the Smad5 messenger RNA and the Smad5 protein in mouse cochlea. Results Smad5 gene expressed in cochlea at a high level. Smad5 expression was concentrated in supporting cell, hair cell, spiral ganglion, epithelium of stria vascularis and basilar membrane. Conclusion The Smad5 proteins exist in the mouse cochlea and it may be involved in the cochlear formation and the differentiation of hair cell. Smad5 might be an essential factor for the development of normal cochlea.