Objective To analyze the expressions and clinical significance of human epidermal growth factor receptor-2 (C-erbB-2) protein in sinonasal squamous cell cancer cells.Method Immunohistochemical and RT-PCR methods were used to detect the expression of C-erbB-2 in 62 cases of sinonasal squamous carcinoma tissues,30 cases of nasal polyps and 25 cases with normal nasal mucosa.The relationships between the expression of C-erbB-2 in sinonasal squamous carcinoma tissues and clinical pathological characteristics were analyzed.Results There was significant difference in the expression of C-erbB-2 in sinonasal squamous carcinoma tissues, nasal polyps and normal nasal mucosa tissues(P <0.05).The expression of C-erbB-2 was positively correlated with the clinicopathologic stage, tumor classification and lymph node involvement(P<0.05).Conclusion The expression of C-erbB-2 is correlated with tumorigenesis,invasion and metastasis of sinonasal squamous cell carcinoma.It can be used as an auxiliary diagnostic and prediction maker as well as a new therapeutic target of sinonasal squamous cell cancer.

Objective To investigate the expression changes of paxillin and focal adhesion kinase(FAK) in scar tissues at different periods.Methods The expressions of paxillin and FAK of scar tissue samples from 30 babies at age of 3-12 months were detected by means of immunohistochemistry.Results The expressions of paxillin and FAK in the scar tissues at the 3th and 6th months were increased more significantly than that in normal skin tissues.Whereas,there was no significant difference upon the expressions of paxillin and FAK in the scar tissues at the 12th week compared with normal skin tissues.Conclusion Focal adhesion varies with change of composition,structures and mechanical properties of extracellular matrix(ECM) and with different intracellular framework.Different signal transmissions of ECM,integrin and focal adhesion compound may result in different changes of cellular function.

The clinical laboratory equipment on hospital ship was introduced, whose status and common faults were analyzed during Philippines humanitarian medical rescue mission and 3 times of Mission of Harmony. The experience was summarized for the maintenance of the clinical laboratory equipment. The problems and countermeasures were proposed for the clinical laboratory equipment.

Objective To evaluate the efficacy and safety of long pulsed Nd:YAG laser in the treatment of onychomycosis.Methods Thirty-five patients with onychomycosis were treated by long pulsed Nd:YAG laser with a wavelength of 1064 nm,power of 30-40 J/cm2,pulse width of 35 milliseconds,diameter of light spot of 4 mm.One treatment session included 4 times of irradiation at an interval of 2 minutes.Patients were treated once a week for 4 weeks followed by once a month for 6 months.Clinical and mycological efficacy was evaluated 9 months after the beginning of treatment.Side effects were recorded and analyzed.Nails were divided into various groups according to causative fungal species,clinical phenotypes,and distribution of affected nails.Data were processed by using SPSS 17.0 software.Chi-square test was performed to compare the response and recurrence rate between these groups.Results A total of 79 nails were treated by long pulsed Nd:YAG laser in this study.At 9 months after the first treatment,clinical response was observed in 67.1％ of these nails,mycological response in 73.4％,and recurrence in 19.0％.The Trichophyton rubrum group showed a better clinical (x2 =10.913,P ＜ 0.05) and mycological response (x2=13.532,P ＜ 0.05),but a lower recurrence/reinfection rate (x2 =10.980,P ＜ 0.05) compared with the other-species group.No significant difference was observed between the Trichophyton rubrum group and Candida albicans group in the clinical and mycological response rate or recurrence/reinfection rate.The clinical response in the distal lateral subungual onychomycosis (DLSO) group was significantly poorer than that in the white superficial onychomycosis (WSO) group (x2 =11.935,P ＜ 0.05),but better than that in the proximal subungual onychomycosis (PSO)/total dystrophic onychomycosis (TDO) group (x2 =17.515,P ＜ 0.05).Increased clinical response rate was observed in the second-fifth finger nail group compared with the thumb nail/second-fifth toe nail group (x2 =13.437,P ＜ 0.05)and hallux nail group (x2 =10.595,P＜ 0.05),while no statistical difference was observed in clinical response rate between the hallux nail group and thumb nail/second-fifth toe nail group (x2 =3.030,P＞ 0.05),or in mycological response rate or recurrence/reinfection rate among the second-fifth finger nail group,thumb nail/second-fifth toe nail group and hallux nail group.There was no obvious adverse reaction but pain during the treatment.Conclusions Long pulsed Nd:YAG laser appears to be an effective and safe approach to the treatment of onychomycosis,and the treatment outcome is affected by clinical types,location,and causative fungal species of onychomycosis.

AIM: To study the clinical efficacy and safety of intravenous immunoglobulin (IVIG) for infant with severe pneumonia.　METHODS: Seventy patients of infant with severe pneumonia were divided into 2 groups. Patinets (n=50) of the trea- tment group (M 30, F 20; age 6 mo± s 5 mo) were treated with IVIG and conventional drugs, IVIG 400 mg*kg-1*d-1 for 3 d. Patinets (n=20) of the control group (M 12, F 8; age 7 mo±7 mo) were treated with conventional drugs.　RESULTS: The duration of fever, tachypnea, high heart rate shortened. The gasp and rales disappeared earlier. The cardiac failure recovered faster than the control group. There was significantly diffference statistically (P<0.05). The level of IgG, IgA raised after treatment. There was significantly difference statistically (P<0.01). The level of CD+3, CD+4, CD+8 after treatment also raised significantly compared with that before treatment (P<0.05). IL-6 and IL-8 after treatment reduced. There was significantly difference statistically (P<0.05).　CONCLUSION: IVIG is safe and effective drug in adjuvant treating severe pneumonia of infant, specially RSV pneumonia.

Objective To investigate the relationship between the expression of the survivin gene and CpC methylation in exon 1 of the survivin gene in CA tissue, and to study the expression of survivin protein in CA tissue and its modulation mechanism. Methods Tissue samples were obtained from the CA lesions of 30 patients, normal cervix of 10 female controls, and normal foreskin of 10 male controls. Immunohistochemistry was carried out to detect the expression of survivin protein in these specimens, RT-PCR to measure the mRNA expression of survivin, and methylation specific PCR (MSP) to analyze the methylation status of CpG island in the survivin gene exon 1. Results The positivity rate of survivin protein and mRNA was 90% (27/30) and 93.3% (28/30) in CA tissue specimens, respectively, 5% (1/20) and 5% (1/20) in control tissue specimens, respectively; there was a significant difference between the two groups of specimens in both the parameters (x2 = 35.187, 38.437, both P < 0.01). The demethylation of CpG island in the survivin gene exon 1 was observed in 86.7% (26/30) of the CA tissue specimens and in 15% (3/20) of the control tissue specimens (x2 = 10.865, P < 0.01). There was a positive correlation between the demethylation status of CpG island in exon 1 and the mRNA expression of survivin gene (x2 = 13.929, P = 0.014). Conclusions The expression of survivin protein in CA tissues might be associated with the demethylation of CpG island in exon 1 of the survivin gene, and may play a certain role in the development of CA.

Objective To compare the therapeutic effect of two Methodsof in vitro oocyte maturation (IVM) technology with polycystic ovary syndrome (PCOS) patients in infertility treatment.MethodsRetrospective analysis was performed on patients with PCOS infertility who were stimulated with two different kinds of stimulating method of the IVM cycle in our center during April 2010 and August 2010.There were 20 patients in the temporary FSH stimulating group (group A) and 31 patients in the HCG stimulating group (group B).The number of oocytes maturation rate,fertilization rate,cleavage rate,excellent embryo rate,implantation rate,pregnancy rate per oocyte recycle,pregnancy rate per transfer and abortion rate of transfer were compared.ResultsThere was no significant difference between the two groups of age,duration of infertility,body mass index,based sex hormone levels by t test(P＞0.05).There was no significant difference between the two groups of the number of oocytes retrieved,oocyte maturation rate,cleavage rate,and abortion rate of transfer(P＞0.05).In group B,the fertilization rate was 80.3%,good-quality-embryo rate was 49.8%,implantation rate was 31.5%,pregnancy rate per oocyte recycle was 54.8%,which was significantly higher than in group A (73.9%,35.4%,12.5% and 25.0%,respectively).ConclusionsIf IVM was used to treat PCOS patients with infertility,HCG stimulating will be better than FSH stimulating,and it could result in a higher clinical pregnancy rate.

Objective To compare the efficacy of and adverse reactions to a fractional micro-plasma radio-frequency technology versus fractional ultrapulsed CO2 laser in the treatment of atrophic acne scars.Methods Twenty-one patients with atrophic acne scars were enrolled in this study.Half of each subject's face was treated with micro-plasma,and the other half with fractional ultrapulsed CO2 laser,for one session.Treatments were randomly administered in a split-face manner.The efficacy and adverse effects were evaluated 6 months after the treatment by using the following outcome parameters:ECCA grading scale (échelle d' évaluation clinique des cicatrices d'acné),degrees of post-treatment pain and edema,time taken for crusting and durations of inflammatory erythema,patients' subjective rating of improvement in scar by using a quartile grading scale.A non-parametric rank test was conducted to compare the efficacy and adverse effects between the two treatments.A scar model was established on both ears of a New Zealand big ear rabbit,and treated with the CO2 laser and micro-plasma respectively,immediately followed by the resection of scar tissue for the observation of histological changes.Results A decrease of ECCAscore was observed in 90.5％ (19/21) of the patients after micro-plasma treatment,and in 86.7％ (18/21) after CO2 laser treatment; no significant difference was observed in the response rate (P ＞ 0.05).In detail,ECCA score decreased by 31.5％ (from 50.71 to 34.76 ) after micro-plasma treatment,compared to 29.9％ (from 53.57 to 38.10) after CO2 laser treatmet.Mild edema was observed after micro-plasma treatment,with the duration of erythema and crusting being 13.95 days and 6.95 days,respectively,compared to 45.81 days and 10.10 days respectively,after CO2 laser treatment.Pigmentation occurred in none of the patients after micro-plasma treatment,but in 19％ after CO2 laser treatment.Animal experiment showed that microscopic ablation zones were broad and shallow after micro-plasma treatment,but narrow and deep after CO2 laser treatment.Conclusions Fractional micro-plasma and CO2 laser are both effective for the treatment of atrophic acne scars,but the former seems to have less side effects with a lower incidence of pigmentation.

ObjectiveTo observe the effect of enema with Chinese medicine Changduqing combined with plasma exchange for treatment of endotoxemia in patients with acute-on-chronic liver failure.Methods A prospective randomized controlled trial was conducted, and 68 patients with acute-on-chronic hepatic failure who were hospitalized from January 2009 to June 2012 in the First Affiliated Hospital of Henan University of Traditional Chinese Medicine were randomly divided into treatment and control groups, 34 cases in each group. The patients in control group were treated with plasma exchange combined with western medicine comprehensive treatment such as protecting liver, reducing enzyme, removing jaundice, and in cases with hepatitis B, antiviral therapy was added. The treatment in patients of treatment group was the same as that in the control group, but additionally Changduqing enema of TCM decoction was given(ingredients: radix et rhizoma ginseng 10 g, flos magnolia officinalis 6 g, radix et rhizoma rhei 6 g, fructus aurantii immaturus 6 g, radix paeoniae rubra 10 g),twice a day combined with 3-4 times of plasma exchange treatment, once every 72 hours. The course of treatment of both groups was 4 weeks. The changes of total bilirubin (TBil), alanine aminotransferase(ALT), albumin(ALB), prothrombin activity(PTA), endotoxin, the improvement of clinical symptoms and signs such as lacking in strength, poor appetite, abdominal distension, oliguria, bleeding tendency, hepatic encephalopathy, infection and ascites were observed before and after treatment, and the survival rate in 24 weeks of follow-up was also investigated.Results Before treatment, the comparisons of TBil,ALT, ALB and PTA between the two groups were of no statistically significant differences(allP>0.05); compared with those before treatment, the levels of TBil and ALT were obviously decreased, and PTA was markedly increased after treatment in both groups, the degree of change being more prominent in treatment group〔TBil(μmol/L): 89.6±52.3 vs. 124.6±64.4, ALT(U/L):52.4±32.1 vs. 98.3±42.5, PTA:(53.8±11.5)% vs.(41.2±10.2)%, allP<0.05〕. The ALB levelsbefore and after treatment of both groups showed no significant difference(bothP>0.05). After treatment, the endotoxin(kU/L) in both groups were decreased in inchoate, developing and fully-developed stages and the descent being more significant in treatment group(inchoate stage: 0.094±0.015 vs. 0.109±0.032, developingstage: 0.102±0.019 vs. 0.146±0.062, fully-developed stage: 0.124±0.022 vs. 0.196±0.074, allP<0.05). The 24-week survival rates of developing and fully-developed stages in patients of both groups were lower than the rate in patients of inchoate stage, and the rates of treatment group in inchoate and developing stages were remarkably higher than the rate in control group〔inchoate stage: 94.1%(16/17) vs. 83.3%(15/18), developed stage: 85.7%(12/14) vs. 42.9%(6/14),bothP<0.01〕.ConclusionEnema with TCM Changduqing combined with plasma exchange for treatment of patients with acute-on-chronic liver failure can remove bilirubin, ameliorate endotoxemia, elevate PTA level and increase the survival rate of patients in 24 weeks of follow-up.

BACKGROUND:Human embryonic stem cels are able to self-renew indefinitely and have the capacity to differentiate into al three germ layers (ectoderm, endoderm and mesoderm). These properties imply great potential in the basic research and clinical application, including regenerative medicine, drug screening and toxins, early human embryo, cel transplantation, gene therapy,etc. However, it is a substantial chalenge to develop efficient techniques for their large-scale culture under defined conditions, and for controling and directing their differentiation. For therapeutic purposes, many scholars are trying to establish methods for maintaining pluripotency in defined xeno-free conditions and scalable culture systems. OBJECTIVE:To discuss the progress of serum-free culture systems in human embryonic stem cel research reported in recent years and to highlight the chalenges and advances being made towards the development of serum-free and xeno-free culture systems suitable for therapeutic applications. METHODS:A computer-based search of CNKI and PubMed academic database was performed for articles addressing serum-free culture systems of human embryonic stem cels published from 2008 to 2015. Repetitive and old articles were excluded. Finaly, 58 articles were summarized. RESULTS AND CONCLUSION:Several groups have attempted to exclude individual animal components by using feeder-free matrices, feeder cels of human origin, or defined xeno-free media, aiming to select a suitable matrix and medium that can minimize or not use heterologous components, in order to obtain cel lines at clinical level. However, the current cel products are far from clinical application. There are stil many problems to be solved, such as standardization, normalization and individualization of cel products. With the normative development of stem cel research and industry, human embryonic stem cel products are expected to be widely used in clinic.