50%) in the objective findings and/or subjective symptoms in both patients.In case 1 and case 2,the frequency of daily urination decreased by 7.3% and 34.3%,the volume of urination increased by 118.2% and 65.7%,the degree of urgent urination declined by 72.0% and 68.1%,respectively.Then they received permanent electrode and neurostimulator implantation and the improvement remained significant.They were followed up for 26 and 17 months,respectively,and no significant complications were found. Conclusions SNN is a micro-invasive,effective,and safe therapy for chronic voiding dysfunction.It may also be effective for some neurogenic dysfunctions of the bladder and urethra.

Objective To study the surgical repair mode of skin cancer in facies in aged patients. Methods The modes of surgical repair in 216 cases of aged patients with skin cancer in facies were analyzed. Results The special characteristics of physiology and pathology and the facies anatomy in the elderly determined the complexity of surgical repair. The surgical mode of excision and suture was the safest and the most efficacious. Skin flap transfer could mostly satisfy the function requirements of facies for the wound that was not able to be sutured after excision. Free skingrafting was applicable to the case that the deep tissue was not invaded by the tumor and the general condition of the patients was not much good. Conclusion The order of surgical repair modes for skin cancer in the facies in the elderly is excision and suture, skin flap transfer, and free skingrafting. Local skin flap must be the primary source as the selection of the skin flap is concerned. The suitable axial pattern skin flap or musculo-cutaneous flap can be selected according to the different section of the facies while there is no suitable local tissue.

Objective To analyze proliferating cell nuclear antigen(PCNA) index in invasive, proliferative,aged parts of keloid to explore the mechanism of keloid invasive growth characteristics. Methods PCNA in 10 cases of keloid and 10 cases of normal skin was detected by immunohistochemical staining, and the PCNA index of different parts in keloid and normal skin was compared. Results The PCNA index of invasive part in keloid was obviously higher than that of proliferative,aged parts of keloid and normal skin (P

Objective To study the MTHFR gene (677 gene loci and 1298 gene loci) mutations in Chinese patients with keloid. Methods The tissue DNA was extracted from 20 samples of keloids. and peripheral blood samples from the same patients were employed as the control. Polymerase chain reaction(PCR) was used to amplify the Mthfr 677 gene loci and Mthfr 1298 gene loci from the keloid tissue DNA and peripheral blood DNA. and the PCR products were sequenced directly and then compared with the GenBank data. Results Mutations were detected in 17 out of 20 keloids on Mthfr 677 gene loci, the mutation incidence was 85.0 %. Mutations were detected in 13 out of 20 keloids on Mthfr 1298 gene loci, and the mutation incidence was 65.0 %. The mutation involved point mutation, deletion and insetion as well as multisite and multitype. No MTHFR gene mutation was detected in all peripheral blood samples . Conclusion There is a strong correlation between the MTHFR gene (677 gene loci and 1298 gene loci) mutation and keloid.

Objective Nonsyndromic cleft lip with or without cleft palate(NSCL/P)is a common craniofacial birth defect which results in lifelong medical and social consequences.Although Asians have the highest birth prevalence of oral-facial clefts,the majority of gene mapping studies of cleft lip with or without cleft palate(CL/P)have been in European or Ameriean Caucasians.Therefore,the obiective of this study was to evaluate association between transforming growth factor alpha(TGF-α)gene BamH Ⅰ polymorphism and NSCL/P in Chinese.Methods 107 patients with NSCL/P and 136 healthy controls were examined for TGF-α/BamH Ⅰ genotypes.TGF-α/BamH Ⅰ typing was carried out by digesting the locus specific polymerase chain reaction amplified products with alleles specific BamH Ⅰ restriction enzyme(PCR-RELP).Resuits A1 allele frequency was 0.06 and A2 allele frequency was 0.94 in the controls.A1 allele frequency was 0.14 and A2 allele frequency was 0.86 in patients with NSCL/P(x2=8.27,df=1,P＜0.05).A1 allele frequency was 0.17 and A2 allele frequency was 0.83 in the bilateral cleft lip with or without cleft palate.A1 allele frequency was 0.13 and A2 allele frequency was 0.87 in the unilateral cleft lip with or without cleft palate(x2=0.36,df=1,P＞0.05).There was no statistically significant between the case with family history and the case without family history(x2=0.34,df=1,P＞0.05).Conclusions The above data demonstrate that there is evidence for the association of TGF-α polymorphism with development of NSCL/P in Chinese.

Objective To observe the effects of pentifylline on hypertrophic scars in the rabbit ears. Methods An animal model for hypertrophic scars was established and treated with pentifylline in different concentrations or saline on day 49. Hypertrophic index, growth of fibroblasts and production of collagen in the section were quantitatively determined with an image analysis system. Results Hypertrophic index was found to be decreased in the pentifylline-treated group (P

Objective To evaluate narrow band imaging (NBI) assisted argon plasma coagulation (APC) in treatment of Barrett's esophagus (BE). Methods Suspected BE lesion was observed under white light, NBI and magnification, biopsies were taken at the site with characteristic pit pattern and capillary architecture of BE. A total of 86 patients with pathologically confirmed BE were randomly divided into NBI group (n= 42) to receive APC under NBI, or control group (n= 44) to receive APC under whit light. For APC procedure, the probe was inserted through biopsy channel to reach 1 cm beyond the endoscope tip, and was located 1-2 cm from the lesion to assure safe use. All patients were followed up with endoscopy and biopsy at 3 and 6 months after APC, respectively. Results There was no significant difference between 2 groups in effective rate of BE mucosal eradication at 3 and 6 months after APC procedure (P > 0.05). Conclusion NBI assisted APC is safe and effective in eradication of BE epithelium, in reducing procedure time and in relieving of functional gastrointestinal symptoms related with BE.

Objective To analyze the radionuclide bone imaging in 343 primary nasopharyngeal carcinoma cases and to know the positive ratio and its prognosis. Methods 343 cases with primary NPC were examined by radionuclide bone imaging in order to find if there was bone metastases and analyze in single and multi factors, and then to know its prognosis. Results The positive ratio of 343 NPC cases was 32.9 %, men 37.5%, women 17.7%. There was significant statistic value in sex, age and staging through Binary Logistic Regress analysis. Men, the more advanced staging, the older people, the earlier to metastases.The overall accumulate survival ratio was 1 year 92.1%, 2 year 83.9 %, 3 year 78.8 %. Conclusion Nasopharyngeal carcinoma is easy to metastases. Radionuclide bone imaging should be performed in the patients with NPC because it is important to evaluate the staging and therapy.

BACKGROUND: Clinical genetics and molecular biology studies have shown that the occurrence and development of the keloid is closely related to the inheritance. However, it remians unclear if the same is ture to the hypertrophic scar. OBJECTIVE: To investigate similadties and differences of genetic alteration between the hyperplastic scar and the keloid, DESIGN, TIME AND SETTING: A contrast observational experiment was performed in Guangdong Medical College between March 2007 and December 2008.MATERIALS: Scar samples were taken from 16 patients (in-patient and out-patient) in the Department of Plastic Surgery, the Affiliated Hospital of Guangdong Medical College, with10 patients with hypertrophic scars (3 males and 7 females, 20-50 years old) and 6 patients with keloids (1 males and 5 females, 19-46 years old). METHODS: The DNA of both hyperplastic scar and keloid tissues was extracted to investigate, using comparative genomic hybridization technique, the genomic imbalance (the lose or amplification of genetic material), so as to make a comparative study on differences of the DNA copy number changes between the two. RESULTS: Neither altofrequent loss nor amplification of DNA copy number was found in any specific DNA region of hyperplastic scar tissues; as for the keloid, special DNA altofrequent loss regions were also not found, but altofrequent DNA copy number loss regions presented in 1, 16, 20 and 22 chromosomes. Comparatively, the keloid presented much higher loss rate of the DNA copy number in 1,16,20 and 22 chromosomes than the hyperplastic scar (P < 0.05).CONCLUSION: The hyperplastic scar has no conspicuous DNA copy number lose or amplification compared with the keloid, which indicates that the occurrence and development of the hyperplastic scar may not have any direct relation with the inheritance.