Paeonol is an nerb which has been used us an anodyne. The analgesic action of Paeonol has been shown in this paper by using the following methods: Mice licking hind paw on hot plate (55℃); mice wring evoked by ip 0. 7% acetic acid 10 ml ? kg-1; continuous pain stimuli elicited by sc 2. 5% formaldehyde 0. 03 ml in fore paw of mice.No tolerance of analgesic effect was found after daily sc of Paeonol 100 mg ? kg-1for 7 d in mice assayed with hot plate method. In naloxone-challenge test, no jumping response was observed in mice treated with Paeonol 690mg ? kg-1, the maximal tolerance dose. The results indicate that Paeonol induced no morphine-like tolerance norphysical dependence.The analgesic action of Paeonol was not an-tagonizd by naloxone, but was eliminated by in-traperitoneal injection reserpine 3 mg ? kg-1 3 h prior to Paeonol. These results demonstrate that Paeonol belongs to the non-narcotic analgesic, and suggested that the analgesic action of Paeonol may be related to the monoamine level in brain.

Objective To investigate the localization,zone and activation intensity of olfactory center in young versus elderly healthy volunteers by functional magnetic resonance imaging (BOLD-fMRI),so as to elucidate the effect of age on olfactory center in healthy population.Methods Thirteen right-handed healthy adult volunteers were recruited and divided into two groups:young group (5 males and 3 females,mean aged 23 years) and elderly group (2 males and 3 females,mean aged 69.2 years).The olfactory stimulus was r-undecalactone,and it was given according to a block design.The fMRI detection was performed on Philips Achieva 3.0 T MR scanner,and data of BOLE-fMRI was processed and analyzed to get cerebration image by using SPM2.Results In groupaveraged maps,both young and elderly group showed significant olfactory activation in right parahippocampal gyrus,left hippocampal sulcus,right and left superior temporal gyrus,etc,subcortical activation in right thalamus,dorsal pons,and cerebellum activation in cerebellar vermis.Activations in right inferior frontal gyrus,right middle frontal gyrus,right medial occipito-temporal gyrus and right fimbria of hippocampus were observed only in young group,while activation in bilateral middle temporal gyrus was observed only in elderly group.Activation area was apparently smaller and activation degree was lower in elderly group than in young group.Activation intensity in right superior parietal lobule and bilateral superior temporal gyri was higher in male group than in female group (t=13.7,6.08,5.36,respectively,all P＜0.001).Conclusions The intensity of activation in olfactory center is lower in the elderly than in the young,and absence of part of the active regions is found in the elderly,which demonstrates the regression of olfactory center in the elderly.The olfactory center shows right-predominant activation,and olfactory activation intensity in some cortical regions is higher in males than in females.

Objective To analyze the clinical manifestations and treatment of acquired syphilis in children.Methods A retrospective analysis was conducted.The clinical data on 14 patients with acquired syphilis collected from July 2007 to December 2010 were assessed.Results Among the 14 cases,10 were secondary syphilis,2 early latent syphilis,and 2 late latent syphilis.Seven of the patients had been misdiagnosed as other diseases.All the patients had a history of close contact with syphilis patients or having mouth-to-mouth feeding history after chewing food by adult patients with syphilis.Both rapid plasma reagin (RPR) test and Treponema pallidum haemagglutination assay (TPHA) were positive in all the patients.The skin lesions were mainly located in the oral cavity mucosa and rarely in the trunk,which included leukoplakia,mucosal wet papules,and pustules.Conclusions Acquired syphilis in children is often clinically misdiagnosed or ignored.For children presenting with atypical skin rashes,especially for those having close contact with active syphilis patients,acquired syphilis should be suspected.

OBJECTIVE To discuss the operative plan for nasal cavity abnormality and evaluate the effect of revision FESS. METHODS A retrospective study of 36 revision FESS performed during 2002.3-2005.5 (age from 17 to 55 years old) is presented. Patients were evaluated with endoscopic examination of the nasal cavities and computed tomography of the sinuses and nasal cavities. Information was also collected during the revision surgery. The plan was designed according to nasal cavity abnormality. RESULTS The reasons of revision FESS: Among 36 cases there are 24 ethmoid sinusitis, 16 cases with recurrence of polyps,13 middle meatal stenosis, 11 middle turbinate adhesion, 10 septal deviation, 5 frontal recess stenosis, 5 sphenoid sisusitis, 3 maxillary ostium obstruction,3 inferior turbinate hypertrophy. Follow up for 6 month～43 month after revision FESS, 22 cases were successful, 10 satisfied and 4 inefficacy. CONCLUSION The primary FESS failure was associated with nasal cavity structure diseases. Meticulous attention in these areas and correcting it during surgery may reduce recurrence and ensure operative effect after revision FESS.

ObjectiveTo investigate the application value of negative pressure sucking technique in the elderly after nasal septal reconstruction. MethodsForty elderly patients after nasal septal reconstruction were divided into two groups randomly, with twenty patients in each. The cases in observing group received negative pressure sucking technique while those in controlling group received nasal packing with vaseline gauze following the surgery. The amount of bleeding of the first 24 hours after operation, the comfort degrees evaluated by using visual analogue scale (VAS),hematoma of nasal septum, edema in nasal cavity and duration of hospitalization after operation were compared between the two groups. ResultsThe amount of bleeding of the first 24 hours afteroperation was more in observing group than in controlling group[(14.2±8.1)ml vs. (7.2±4.1)ml, P<0.05]. The VAS score and the number of cases who felt discomfortable moderately or severely were significantly less in observing group than in controlling group at 6 h, 12 h and 24 h after operation(all P<0.05). The nasal cavity gap were significantly wider in observing group at the 3rd day after operation(P=0.001), and the duration of hospitalization after operation was significantly shorter in observing group [(4.5±0.9) d] than in controlling group [(5.42±0.9) d](P=0.042)Conclusions Negative pressure sucking technique applied in the elderly after nasal septal reconstruction can significantly relieve the distress of patients, reduce the edema in nasal cavity and shorten the duration of hospitalization, but does not increase the risk of hemorrhage.