Objective To investigate the effect of lysostaphin on golden staphylococcal bacteria in vitro and on acestoma tissue.Methods Effects of lysostaphin on golden staphylococcal bacteria,Candida albicans and P.aeruginosa were detected by drug sensitivity test.Quantitative analysis of bacteria was used to detect the effect of lysostaphin on golden staphylococcal bacteria in 29 cases of 10%-30% TBSA.Results Most golden staphylococcal bacteria,as well as Candida albicans could be killed by lysostaphin.Lysostaphin had little effect on P.aeruginosa.Eighty-nine percent bacteria could be killed by lysostaphin after gauze with lysostaphin had been used for over 3 d,indicating lysostaphin may control bacteria quantity and improve survival rate of skin graft on granulation tissue.Gauze with lysostaphin contained biological enzymes and it had no systemic side effects.Conclusion Gauze with lysostaphin may be available on controlling golden staphylococcal bacteria as well as Candida albicans in burnt patients.Lysostaphin is effective in controlling residual trauma infected by golden staphylococcal bacteria.

Objective To analyze the allele frequencies of 5 short tandem repeat(STR)loci(D12S313,D12S304,D12S1640,D12S1708 and D12S1583)on chromosome 12 among Kashin-Beck disease(KBD)patients and the control population living in the area suffered from KBD.Methods Fifty KBD patient8 and 50 non-KBD patients were chosen in endemic afea of Shaanxi Province,5 STR loci on chromosome 12 were genotyped by the technology of polymerase chain reacfion(PCR)and capillary electmphoresis.The pelymorphisms of STR in these popIllations were analyzed.The allele and genotype frequencies of each STR in the corresponding groups were caleulated and compared. Results In KBD group,the 5 STR loci had 8,6,7,5 and 11 types ofalleles and 17,11,15,8 and 28 genotypes, respectively;while in the control group,the number of aUele types of 5 STR loci were 6,8,6,4 and 10,the number of genotype of those loci were 13,21,14,8 and 23,respectively The allele frequence of D12S304 locus was statiBtically significant between KBD patients and controls(P<0.05),especially for the 319 bp allele(P<0.006 25). Conclusion There is an association between D12S304 locus and KBD.The 319 bp allele might play the key role.

Objective To investigate two techniques and outcome in repairing facial concave deficits.Methods Eleven patients with facial concave deformity were included in this study:nine were treated with autologous fat granule injection,1,3 and 5 patients were given fat granules injection fourth,twice and once,respectivly.The other 2 patients were repaired with homolateral temporal fascia flap.Results The implantation by using autologous fat granules in all 9 patients showed excellent results.Homolateral temporal fascia flaps were used in 2 cases,one of which was formed hematoma after operation and scavenged thereafter.All the patients had satisfactory results.Conclusion Both approaches well rehabilitate patients' facial contour,and thus are capable of repairing moderate or minimal facial concave deficit and worth recommendation.

Objective To explore the mechanism of long chain noncoding RNA RORin regulating prolifer-ation and apoptosis of pancreatic cancer cell. Methods Pancreatic cancer cell line BxPC-3 was selected. The RNA level of lncRNA ROR and notch1 was detected by RT-PCR.Notch1 protein level was detected by Western blot. The regulating relationship between lncRNA ROR and notch1 was analyzedby RNAhybird and luciferase re-porter assay. At last ,CCK-8 and TUNEL were applied to detectthe proliferation and apoptosis of cell line. Re-sults lncRNA ROR and notch1 were highly expressed in pancreatic cancer tissue ,compared with normal tis-sues. There was positive correlation between them. lncRNA ROR was over-expressed in BxPC-3,cell proliferation activity was increased and the percentagesof DNA damaged positive cells was decreased ,accompanied by in-creased levels of notch1 mRNA and protein. Luciferase assay confirmed that ROR could bind to notch1and inhibit its activity by miR-137. Compared with control group ,the proliferation of pcDNA-ROR + si-notch1 cells reduced and the proportion of TUNEL positive cells increased. The differences were statistically significant. Conclusionl ncRNA ROR regulated the proliferation and apoptosis of pancreatic cancer cells by promoting the expression of notch1.

Animals ; Antitussive Agents ; pharmacology ; Drug Evaluation, Preclinical ; methods ; Female ; Male ; Mice

Objective To study the relationship between extraocular muscle thickness and exophthalmos degree in patients with thyroid-associated ophthalmopathy (TAO),so as to provide a scientific basis for guiding clinical treatment.Methods Forty seven patients diagnosed with TAO from May 2005 to May 2011,in the 451 Hospital of the People's Liberation Army were chosen in this study,and divided into TAO group(23 cases) and treatment group (24 cases).Meanwhile,another 32 healthy people were selected as control.Extraocular rectus muscles (including the medial rectus muscle,lateral rectus muscle,superior rectus muscle and inferior rectus muscle) of all participants were measured with B-scan ultrasonography,and exophthalmos degree with Hertel exophthalmometer.Results The thicknesses of medial rectus in control group,TAO group and treatment group were (3.35 ± 0.25),(4.38 ± 0.85),(3.58± 0.52)mm,respectively; the thicknesses of lateral rectus muscle were (2.95 ± 0.61),(4.24 ± 0.75),(3.65 ± 0.42)mm,respectively; the thicknesses of superior rectus muscle were (3.15 ± 0.20),(4.65± 0.68),(4.01 ± 0.15)mm,respectively; the thicknesses of inferior rectus muscle were (3.17 ± 0.72),(4.75 ± 0.52),(3.71 ± 0.91)mm,respectively; the sums of binocular rectus thickness in these three groups were (21.95 ± 0.65),(28.02 ± 1.51),(22.95 ± 0.65)mm,respectively; the difference between the three groups was statistically significant(F=2.32,2.43,2.25,2.17,5.63,all P ＜ 0.05),and TAO group was significantly higher than that in the control group and in the treatment group(all P ＜ 0.05),while there was no statistically significant between the control group and the treatment group(all P ＞ 0.05).The eyes exophthalmos degree in TAO group and treatment group were (16.82 ± 2.46),(14.52 ± 1.83)mm,respectively.The sum of the rectus muscle thickness and eyes exophthalmos was positively correlated(r =0.65,0.58,all P ＜ 0.05).Conclusions Extraocular muscle thickness in patients with TAO is positively correlated with exophthalmos degree,and using B-scan ultrasonography to detect the changes is practical for clinical diagnosis and treatment.

Objective:To explore the histogenesis and differentiation of dermatofibroma (DF) and dermatofibrosarcoma protuberans (DFSP). Methods: Clinical information and microscopic characteristics of 26 cases of DF and 26 cases of DFSP were investigated. The immunohistochemical study was performed on microarray sections by a panel of antibodies including FactorⅩⅢa, HLA-DR, CD34, CD14, S-100, MSA, and Ki67. Probe was labeled by in vitro transcription. The mRNA expression levels of TGF-? and bFGF were investigated by in situ hybridization. Results: All cases showed positive for Factor ⅩⅢa,HLA-DR and CD34 to different extent. The medians of positive rates in DF were FactorⅩⅢa 90%, HLA-DR 70%, and CD34 5%, and in DFSP were FactorⅩⅢa 10%, HLA-DR 5%, and CD34 80%. CD14 was positive in 3 cases of DF and 1 case of DFSP. S-100 was positive in 6 cases of DFSP and 2 cases of DF. MSA was positive in 5 cases of DFSP and 3 cases of DF. In all cases, positive rate of Ki67 was less than 5%. The mRNA expression levels of TGF-? was elevated in DF in comparison with DFSP. Conclusion: Both DF and DFSP can differentiate to dendritic cells (DC) in different degree. Considering the character of microscopic features and immunohistochemical phenotype, cells of DF are much similar to mature DC, while those of DFSP much similar to immature dermal reserve cell (DRC). The differences of cell differentiation between DF and DFSP result in different prognosis. DF is a benign tumor, while DFSP a low grade malignant tumor. The different expression of FactorⅩⅢa and CD34 may be helpful to differential diagnosis of DF and DFSP.

Objective:Since malignant fibrous histiocytoma (MFH) may be taken as an undifferentia-ted pleomorphic sarcoma (UPS), this study was conducted to reassess 33 previously diagnosed MFH cases in the past 10 years based on the latest WHO concept. And then to search for the clinicopathological features, probably tumorigenesis, and the line of differentiation of the remaining MFH/UPS cases.Methods: Thirty-three cases in tissue microarray were studied by immunohistochemistry with panels of neurogenic, myogenic, and lipogenic antibodies. Three expertise pathologists reevaluated the slides separately. Results: Among the 33 cases, 17 cases (51.5%) of MFH had their diagnoses changed, including 5 leiomyosarcomas, 3 malignant peripheral nerve sheath tumors, 1 fibrosarcoma, 1 inflammatory myofibrosarcoma, 1 giant cell tumor and 1 angiomatoid fibrous histiocytoma. The remaining 16 cases (48.5%) were finally diagnosed as MFH/UPS, among which patients were mainly old adults (median age: 63 years; range: 38 to 76 years). The median tumor size was 6.0 cm (range: 3.0 to 14.0 cm), 8 cases (50%) located in lower limb and 5 cases (31.3%) located in thigh. These tumors had marked cytological and nuclear pleomorphism. Immunohistochemistry showed that Vimentin was strongly positive in all 16 MFH/UPS (100%), Muscle-specific actin was variously positive in 8 cases (50%) and 1 case focally expressed Desmin. Eleven cases (68.8%) variously expressed CD68 (KP1) and 7 cases (43.8%) expressed CD68 (PG-M1), which were much higher than leiomyosarcoma, malignant peripheral nerve sheath tumor and liposarcoma with significant difference. Moreover, Ki67 expression rates were from 10% to 100%, including 14 cases more than 50% and 11 cases more than 70%. However, only 2 cases (12.5%) showed P53 positive. Conclusion: MFH/UPS often show marked histological pleomorphism, and the diagnosis must be made by exclusion of other definitive sarcomas, especially myogenic and neurogenic sarcoma. Only Vimentin was always expressed in MFH/UPS, while some of the tumors were positive for myogenic antigen and CD68. It was suggested that MFH/UPS might arise from primary mesenchymal cells, and some cases exhibited fibroblastic and/or myofibroblastic features. In addition, histiocytic phenotypic marker did have more expression in MFH/UPS than in other sarcomas. MFH/UPS still had certain clinicopathological characteristics.

Objective To investigate the distribution of Malassezia species in lesional and non-lesion-al sites of patients with pityriasis versicolor(PV),species-variation in different anatomic sites and in lesions with different pigmentation,and the relationship between various Malassezia species and severity and age of PV patients.Methods A total of629skin specimens taken by sterile adhesive tape from the lesions and non-lesional skin were inoculated on media containing rapeseed oil in113patients with PV.Isolated colonies were identified to species based on physiological and morphological characteristics.Results The isolation rates of Malassezia spp.were not significantly different from both lesions and corresponding non-lesional skin.Among non-lesional sites,the isolation rate was significantly higher in forehead and trunk than that in upper and lower extremities.Five species were identified out of565strains obtained from the patients,including M.sympodialis(44.78%),M.furfur(32.94%),M.globosa(11.68%),M.obtusa(5.84%)and M.restricta(4.76%).Two dif-ferent species were isolated simultaneously from27sites.There was no obvious difference in species distribu-tion patterns between lesions and non-lesional sites.M.restricta was isolated from forehead exclusively.Species-variation was closely linked to lesions with different pigmentation and the age of patients,not to the severity of disease.Conclusion There is neither statistical difference of Malassezia isolation rate and species distribution between lesions and non-lesional skin,nor correlation between disease severity and species-varia-tion.The anatomic sites,the diversity of pigmentation pattern and the age of patients seem to be associated with different Malassezia species.

Adrenal Glands ; Female ; Hematopoiesis, Extramedullary ; Humans ; Spherocytosis, Hereditary ; complications ; Young Adult