0.05). ③All of the OSAHS patients suffered seri-ous lipid metabolic disorders. CONCLUSION ① Fatty infiltration in the pharyngeal tissue may lead to collapse of the pharyngeal airway during sleep. ②The epithelial cells of mucosa,endothelial cells of small vessels and glandular cells of minor salivary glands can potentially produce leptin. Leptin existing with Ob-Rb shows the peripheral action of leptin. The positive ex-pression of leptin and Ob-Rb had no significant differ-ence between the two groups, which may explain theectopic accumulation of lipid. ③ Disordered lipid me-tabolism may not be the determinant factor in the patho-genesis of OSAHS. ④ Endogenous hyperleptinemia may be the protective response to respiratory distur-bance and disordered lipid metabolism, and is also as-sociated with the continuous hypersympathetic activity. The level of leptin in plasma has a positive correlation with the severity of OSAHS.

OBJECTIVE To investigate the location and degree of pharyngeal narrowing in patients with ob-structive sleep apnea-hypopnea syndrome(OSAHS). METHODS Fifty patients with OSAHS were divided into two groups. The first group was examined with single layer helix CT at an awaken state. The second group was examined with single and 16 layer helix CT at an asleep state. Control group was 225 healthy adults. RESULTS The average minimum diameter of pharynx at soft palate level was 5.85 mm and the aver-age minimum section proportion was 50.3 mm2 in the first group. The average minimum diameter and the av-erage minimum section proportion of pharynx at soft palate level were 2.88 mm and 31.5 mm2, and 1.62 mm and 6.3 mm2 as examined with single layer and 16 lay-ers helix CT scan respectively in the second group. CONCLUSION CT can be used as a method for esti-mating the degree of pharyngeal narrowing in patients with OSAHS. 16 layer helix CT scan can reflect the actual pharyngeal narrowing in OSAHS patients while sleeping more accurately.

OBJECTIVE To observe the expres-sion of interleukin-12 and eosinophils in the nasal mu-cosa of allergic rhinitis mice. METHODS Thirty nine male BALB/c mice,6～8 weeks old,were randomly divided into three groups: control group,allergic rhinitis (AR)group, and Budesonide treatment group. Al-lergic rhinitis model in mice were established by using ovalbumin intraperitoneal immunization and nasal anti-gen challenge. The nasal mucosa obtained from mice of three groups were stained routinely by HE and im-munohistochemical method to observe the distribu-tion and expression of interleukin-12 and eosinophils. RESULTS The expression of eosinophils in the nasal mucosa of AR group was significantly higher than con-trol group(P

0.05). The total serum IgE lev-els in allergic rhinitis patients were compared with those of the controls. The total serum IgE levels of the pa-tients were much higher than those of the controls (geometric mean of the patients and the controls were 224 IU/ml and 50 IU/ml respectively,P

0.05). Ac-cording to the classification criteria of ARIA in 2001, 26 children suffered from intermittent A(R22 mild cases,4 moderate-severe cases),while 22 suf-fered from persistent AR(10 mild cases,12 mod-erate-severe cases). Forty percent patients with AR also had bronchial asthma. Domestic decora-tion was an important factor in the induction of AR and 27.1% of the children with AR had inher-ent predisposition. CONCLUSION The prevalence rate of AR in children aged from 9 to 10 in Nanjing is 5.1 %. Strategy of prevention and treatment of AR should beworked out according to the epidemic feature of AR.

OBJECTIVE To study the relationship between allergic rhinitis and asthma. METHODS A total of 1526 cases of allergic rhinitis were investigated to elucidate the relationship between allergic rhinitis (A R )a n d b r o n c h i a l a s t h m a (B A ). T h e allergopharma allergic abstraction was used to detect the allergens with the skin prick test. RESULTS Among the AR patients , 43.8 % were complicated with BA. In patients with AR and BA, 52.3 % suffered from AR initially and 36.5 % suffered from BA initially. 42.4 % of the AR cases and 61.7 % of the AR with BA cases had a positive family history. In addition,30.7 % of the AR cases were complicated with allergic dermatitis. CONCLUSION The results suggested that atopic individuals with asthma or rhinitis had a tendency to develop total airway inflammation. Allergic rhinitis was also related to other allergic diseases. The skin prick test showed that the Dermatophagoides pteronyssinus was the commonest allergen in AR patients.

OBJECTIVE To analyze the incidence of anatomic variations of the temporal bone to provide valuable reference for clinical otology. METHODS Sev-enty six healthy adults (152 ears) and 66 patients(96 ears) with chronic suppurative otitis media confirmed by clinical examination underwent axial and coronal High-resolution Computed Tomography(HRCT) scan. The incidence of high jugular bulb, dehiscent jugu-lar bulb, anterior location of sigmoid sinus, low-lying middle cranial fossa, dehiscent tegmen tympani, mas-toid antrum dysplasia, aberrant internal carotid artery, and large sinus tympani were recorded. RESULTS In normal, abnormal, well and poorly pneumatized groups, the incidence of highly positioned jugular bulb on the right was higher than that on the left. The total inci-dence of high jugular bulb on the left and right was 26.2 % and 46.0 % respectively. The incidence of ante-rior location of sigmoid sinus in the abnormal group (32.3 %) was higher than that in normal group(15.8 %), which was higher in poorly pneumatized group(43.5 %) than that in well pneumatized group(11.3 %). The inci-dence of dehiscent tegmen tympani in well pneuma-tized group(18.0 %) was higher than that in poor pneu-matized group(8.7 %). There was no significant differ-ence in dehiscent jugular bulb, low-lying middle cranial fossa, mastoid antrum dysplasia, aberrant internal ca-rotid artery, and large sinus tympani between the left and right within and among groups. The incidence of these varia-tions was 2.0 %,21.8 %,1.2 %,0.4 %,0.8 %respectively. CONCLUSION HRCT can show ana-tomic variances of temporal bone clearly before opera-tion and has great clinical value for reducing the inci-dence of complications caused by middle ear operation.

OBJECTIVE To investigate the induc-ing factors of Bell’s palsy. METHODS From Febru-ary to May 2005, 262 outpatients of Bell’s palsy were surveyed for 9 inducing factors. RESULTS The mean age of onset was 39?17 years old. The ratio of male to female and of left to right were 48:52. Forty-eight patients denied all inducing factors, while 214 pa-tients (81.7 %) had at least one factor. Cold was found in 53.5 % of the patients, fatigue in 22.5 %, viral infec-tion in 18.7 %, recurrence in 11.8 %, psychological stress in 11.5 %, family history in 7.6 %, puerperal period in 1.5 %, and molar infection of the affected side in 1.5 %. CONCLUSION Bell’s palsy is likely to be a set of disease. Most of patients with Bell’s palsy had inducing factors. Avoid these factors may reduce the incidence of Bell’s palsy. Further investigate will fractionize Bell’s palsy to several diseases includ-ing true idiopathic peripheral facial paralysis and some definite diseases.

OBJECTIVE To study the effect of age on tympanoplasty. METHODS The preoperative pure tone hearing threshold was 55dB in the aged group and 39 dB in the medium aged group. All patients, includ-ing 24 with chronic suppurative otitis media, 29 with cholesteatoma otitis media and 27 with chronic silent otitis media and/or tympanosclerosis, underwent radi-cal mastoidectomy and tympanoplasty (typeⅠfor 25 ears, modified type Ⅱfor 23 ears and modified type Ⅲ for 32 ears) under general anesthesia. RESULTS The average air-conductive hearing threshold was 46dB in the aged group (healing rate was 67 %) and 33dB in the medium aged group (healing rate was 70 %). With aging, the average air-conductive hearing threshold in-creased (P

0.05) before treatment. After treatment, the hearing thresholds were recovered in 21 ears, signifi-cantly improved in 8 ears, improved in 4 ears and not changed in 2 ears in the DM group. In placebo group, the hearing threshold was recovered in 6 ears, signifi-cantly improved in 9 ears, improved in 15ears and not changed in 6 ears after treatment. There was a signifi-cant difference in the level of hearing improvement be-tween the DM group and the placebo group(x2=13.49, P