BACKGROUND: Acellular dermalmatrix (ADM), as a new material, is generally applied to tissue repair after head and neck tumorectomy. However, hypopharyngeal carcinoma surgery always involves in repair and functional reconstruction of defected tissue; therefore, the application effect of ADM needs to be further studied for repairing laryngopharynx defect. OBJECTIVE: To evaluate the clinical effect of ADM in repairing laryngopharynx defect following tumorectomy. DESIGN, TIME AND SETTING: A retrospective case analysis was performed at the Department of Otolaryngology-Head and Neck Surgery, Institute of Battle Surgery, Daping Hospital, the Third Military Medical University of Chinese PLA from May 2005 to June 2006.PATICIPANTS: A total of 25 male cases aged 45-68 years including 22 patients with tumor in the lateral wall of the unilateral piriform fossa and 3 patients with in the posterior wall of laryngopharynxat were finally diagnosed as squamous cell carcinoma. METHODS: According to clinical stages, patients underwent partial or complete laryngopharyngectomy. ADM was used to repair oropharynx mucosa following the laryngopharyngectomy. However, ADM alone was used to repair piece-shaped oropharynx mucosa, limiting by being unable to complete reconstruction of spatial structure. Therefore, myocutaneous flap or other materials combined with ADM was beneficial for reconstruction of laryngopharyngeal cavity following complete laryngopharyngectomy. MAIN OUTCOME MEASURES: The effect of ADM on functional reconstruction of swallowing, breathing, and pronouncing. RESULTS: A total of 25 patients were included in the final analysis. No patients suffered with the pharyngeal fistula. Only one case encountered the subcutaneous infection at day 20 after surgery, but recovering after regular change of dressing and treatment of antibiotics. About 15 patients who accepted the surgery of partial laryngopharyngectomy suffered with bucking, but after 30-60 days, the symptom relieved, even disappeared, in spite of 3 cases still bucking when they swallowed liquid diet. Breathing function was recovered, and tracheal cannula was removed 6-12 months after surgery. Ten of them who accepted total laryngopharyngectomy had resumption of normal oral diet after 20 days. The follow-up periods after the surgery lasted 12-30 months. The allograft became normal mucosa finally, without rejection or scar formation. The follow-up of 10 patients lasted more than 24 months, one case had relapse of tumor, still alive after the second surgery. CONCLUSION: ADM with perfect histocompatibility and easy operability, can be applied to repair deletion of laryngeal or pharyngeal tissue and recover functions of pronouncing, breathing, and swallowing after tumorectomy. The combined use of ADM and musculo-cutaneous flap was effective and satisfactory.

Objective To evaluate the efficacy and safety of desloratadine for the treatment of allergic rhinitis. Methods A total of 50 cases of chronic or acute allergic rhinitis confirmed clinically were randomized into control and experimental groups for double blind study. Scoring of clinical symptoms, examinations of the nasal cavity, blood and urine routine examination, functions of liver and kidney and electrocardiogram (ECG) were conducted on day 14 before and after the experiment. The collected data were analyzed statistically. Results The clinical data of the two groups were comparable. The effective rate of desloratadine was significant in allergic rhinitis, being 95.45%. No remarkable adverse effect was noted in this experiment. Conclusion Desloratadine is more effective and safe than loratadine in the treatment of allergic rhinitis and it may be feasible for clinical application.

There has always been no lack of discussion on Biaoben and Genjie theory in traditional Chinese medical acupuncture circles, but many questions still exist. This article expounds the original meaning of Biaoben and Genjie, traces the origin of the theory and sorts out the questions in Biaoben and Genjie theory, e.g. the difference in the position between Biaoben and Genjie, no record of the location of Genjie of six hand meridians, regularities in meridional qi circulation, understanding and valuing, and application and development to confirm the importance of Biaoben and Genjie theory and to give reference.

Objective To investigate expression and promoter methylation status of BRCA1 in sporadic breast cancer .Meth-ods The expression of BRCA1 mRNA and protein were detected in 60 cases of sporadic breast cancer ,the adjacent breast tissues , and 30 cases of breast benign lesion tissue by RT-PCR and and immunohistochemical staining respectively .The methylation status of BRCA1 promoter in those tissues were detected using bisulfite genomic sequencing PCR (BSP) combined with TA clone for se-quencing .The relation between BRCA1 expression in sporadic breast cancer and promoter methylation status was analyzed .Results The expression level of BRCA1 mRNA and protein were down-regulated in sporadic breast cancer tissues compared to the corre-sponding adjacent breast tissues and breast benign lesion tissue(P<0 .001) .The positive rates of BRCA1 protein was 51 .7% (31/60)in sporadic breast tissue ,which were significantly lower than those of in the adjacent breast tissues 71 .7% (43/60)and breast benign lesion tissue 66 .7% (20/30)(P< 0 .001) .The methylation rate of BRCA1 promoter CpG was 31 .7% (19/60)in sporadic breast ,while it wasn′t found in adjacent breast tissues and breast benign lesion tissue(P=0 .000) .The statistical analysis showed the expression of BRCA1 had significant negative correlation with promoter methylation(r= -0 .345 ,P=0 .007) .Conclusion The hypermethylation of BRCA1 promoter could induce BRCA1 down-regulating ,which may be involved in the occurrence and develop-ment of sporadic breast cancer .

Objective To establish a HPLC method for simultaneous determination of oleanolic acid and ursolic acid and provide the basis for quality control of Hawthorn extract .Methods Chromatographic separation was performed on Agilent Zorbax SB C18 column(250 mm × 4 .6 mm ,5 μm) with mobile phase of methanol (A)-0 .06 mol/L ammonium acetate solution (B) (85∶15 ,V/V ) under isocratic elution for 30 min .The flow rate was set at 0 .8 ml/min and the detection was set at the wavelength of 210 nm .Results Oleanolic acid and ursolic acid showed good linearity (r> 0 .999 5) in the ranges of 0 .496-2.480 g and 0 .498-9 .960 g ,respectively .Repeatability ,precision ,recovery and stability were conform to the method valida-tion requirements of China Pharmacopoeia .Conclusion The method could provide the basis for the quality control of Hawthorn extract and its preparation .