Objective To evaluate operation and chemotherapy in patients with stage Ⅱ testicular seminoma. Methods Forty-four patients with stage Ⅱ testicular seminoma collected from February 1993 to August 2007 were treated with cisplatin-based chemotherapy with repeated course. The retroperitoneal lymph node in ten patients were resected and two patients operated after chemotherapy. Results Resected tissue in eight patients after chemotherapy were necrosis and fibrosis, two patients were viable cancer. All patients were followed up for two to eight years. Five year survival rate was stage ⅡA 100 %(11/11), stage ⅡB 91.67 % (22124), stage Ⅱc 77.78 %(7/9). Conclusion For raising survival rate and controlling disease development of the patients who suffered from stage Ⅱ testieular seminoma,the repeated courses of chemotherapy should be given as early as possible.

The paper discussed the working platform for medical ethics education,for the purpose of making such education regular,normalized and popular among the staff.Such means as better organization,innovative media,reinforced implementation and repeated examination will encourage hospital staff to develop better medical ethics for better quality of care and elevation of hospital culture and social satisfaction.

Objective To observe the immunologic function of critically ill newborn and the relative function of nuclear factor kappa B(NF-?B).Methods The critically ill group contained 50 cases,and 25 cases from healthy newborns were used as control group.Blood samples were collected in each case,levels of cytokine interleukin(IL)-4,interferon(IFN)-?,tumor necrosis factor(TNF)-? and NF-?B were detected.Result Compared with control group,NF-?B of the critically ill newborn activated and the cytokine were disorder,and IL-4 and TNF-? increased,but IFN-? decreased.Conclusions Critically ill newborn exist immune functional disorder.Furthermore,NF-?B activation may be involved in the process in infants with critically illness.

Objective To observe the granule tissue remodeling under neoepithelium in minitype pigs' full thickness dermal wounds and discuss the relation between the remodeling and possible ulcers or scars. Methods After the establishment of eight full-thickness dermal wound models with the diameter of 4 cm on the back of six minitype pigs, the specimens were collected from wound edge and wound center immediately, 3, 6, 9, 12, 15, 20, 25, 30 and 45 days, respectively after injury for HE staining, immunohistochemical staining and Van Gieson staining and then observed under light microscope to count the cell number, fibroblasts and vascular endothelial cells as well as evaluate the quantity and arrangement of collagens. Results The mean wound healing time was (29.3?1.8) days. After 9-25 days, the granule tissues in the wound center contained more cells, fibroblasts, collagen and vascular endothelial cells than those under neoepithelium of wound edge (P 0.01). Meanwhile, the collagen quantity and arrangement style of granule tissues under neoepithelium during wounds healing (12-30 days) assembled those under neoepithelium 15 days after wound healing. Conclusion Granule tissue remodeling exists during the healing of full thickness dermal wound.

Objective To explore the association between the genetic polymorphism of hypoxia inducible factor 1 α (HIF-1α) G1790A and the radiosensitivity of nasopharyngeal carcinoma.Methods A total of 189 patients with nasopharyngeal carcinoma treated with radical radiotherapy were followed-up for 3 years.The patients were divided into cured group with 135 cases and recurrence group with 54 cases by clinical follow-up results.PCR-RFLP was used to determine the mononucleotide genotypes of HIF-1α G1790A.Results The observed genotype frequencies of HIF-1α gene 1790 (G→A) for GG, GA and AA were 70.04% , 20.74% , 2.22% in cured group and 59.26% , 38.89% , 1.85% in recurrence group, respectively.The allele frequencies for G and A were 87.4% , 13.9% in cured groups and 78.7% ,21.3% in recurrence group, respectively, without significant difference in distribution of allele frequencies between the two groups(x2 =6.919, P =0.077).Conclusions The genetic polymorphisms of HIF-1α G1790A might be related with the radiosensitivity of nasopharyngeal carcinoma.

Objective To determine the effects of hypoxia inducible factor-1α(HIF-1α) expression on postoperative adjuvant radiotherapy in esophageal carcinoma. Methods 95 cases with esophageal carcinoms who received radical operation were analyzed with followed-up data from 1995 to 1998.Expression of HIF-1α in 45 patients with esophageal carcinoma who received radiotherapy after radical operation were deternlined by immunohistochemical method in contrast with 50 patients with esophageal carcinoma received surgery alone.Kaplan-Meier method and COX proportional hazard model were used to analyze.Results The positive expression of HIF-1α in esophageal carcinoma was observed mainly in the nucleus of tumor cells.The positive expression rate of HIF-1α in esophageal carcinoma was 58.9%.The expression of HIF-1α had no relationship with age,sex,histologic subtype and T stage,but had positive relationship with recurrence and distant metastasis.There was significant difference between patients with positive and negative HIF-1α protein expression in surgery alone and postoperation radiotherapy group. COX model analysis showed that HIF-1α had separate and significant impacts on prognosis in surgery group and surgery plus radiotherapy group. Conclusion Over expression of HIF-1α protein suggests a poor prognosis,and has tendency to resist radiotherapy in esophageal carcinoma.

Objective To explore the relationship between the protective effect of hydrogen sulfide (H2 S ) postconditioning against myocardial hypoxia-reoxygenation and the dynamics of actin. Methods Adult rat cardiomyocytes were isolated and the same hatch cells were divided into 4 groups (n =3):normal group (group N),hypoxia-reoxygenation group (group HR),ischemia postconditioning group (group IPTC)and H2 S postconditioning group (group S).The four groups were divided into two sub-groups with or without cytochalasin D (CyD).At the end of reoxygenation,F-actin/G-actin,intracellular calcium ion concentration (Ca2+ )and pH value were detected with laser scanning confocal microscopy, meanwhile the level of p-p38MAPK was detected with Western blot.Results The fluorescence intensity of F-actin/G-actin of group HR,group IPTC and group S were significantly higher than that of group N (P <0.05).The fluorescence intensity of Ca2+ of group HR was higher than that of group N,group IPTC and group S (P <0.05);The intensity of Ca2+ of all group with CyD treatment was higher than those without (P <0.05);The fluorescence intensity of pHi of group N and group HR with CyD treatment was higher than those without;The fluorescence intensity of pHi of group IPTC and group S was lower than those without;The flu-orescence intensity of pHi of group HR was lower than that of group N,group IPTC and group S (P <0.05), respectively;the pHi of group N and group HR sub-group with CyD treatment was higher than those without correspondingly (P <0.05),however,the pHi of IPTC and S sub-groups were lower than their corresponding groups (P <0.05).The level of p-p38MAPK in group HR was significantly higher than those of other groups (P <0.05);there was no difference among groups N,IPTC and S.Conclusion Hydrogen sulfide postcondi-tioning could promote F-actin to remodel and stabilize the cellular environment.Hypoxia-reoxygenation pro-motes the phosphorylation level of p38MAPK,which could be surpressed by H2 S postconditioning.

AIM: To explore the effect of lacrimal duct laser with lacrimal drainage tubes and stents implantation for complexity dacryagogatresia.
METHODS: There were 65 patients ( 82 eyes ) with compound tears nasolacrimal duct obstruction who received lacrimal drainage tubes and stents implantation after laser. The lacrimal duct stents were removed through nasal cavity after 1mo. Lacrimal drainage tubes were removed after 3-6mo. Follow-up periods were 6mo to 1a.
RESULTS: In the 65 patients (82 eyes), 71 eyes were cured, 5 eyes improved, the efficient rate was 93%; there were 6 eyes (7%) with epiphora.
CONCLUSION: Lacrimal duct laser with lacrimal drainage tubes and stents implantation was efficient for complexity dacryagogatresia.

PcoI-PcoR is a quorum-sensing (QS) system influencing the biofilm formation and rhizosphere colonization in Pseudomonas fluorescens 2P24. The expression of the pcoI, a N-acyl-homoserne lactone (AHL) biosynthase gene, is under the regulation of a number of chromosomal factors, such as the GacS-GacA two-component system. In this paper, we investigated the upstream regulators that influence the transcription of pcoI gene using a chromosomal pcoI-lacZ fusion reporter strain PM203. Cosmids containing genomic DNA of the wild-type strain 2P24 were introduced into the reporter strain PM203 (gacA—, pcoI-lacZ) to screen positive transcriptional regulators of pcoI gene. One of them named pP32-24, which contained a 5-kb Pst I functional fragment was selected. Further analysis identified that the pcoI was the gene responsible for the increase of the pcoI-lacZ expression. The expression of pcoI-lacZ reporter was alsoimproved in both PM101 (pcoI-lacZ) and its gacAmutant PM203 after addition of exogenous AHL, indicating that the expression of pcoI is positively regulated by AHL (autoinduction) in strain 2P24. In addition, deletion mutagenesis and complementation experiments demonstrated that the transcriptional regulator PcoR positively controlled the expression of pcoI and the formation of biofilm. These results suggest that, in strain 2P24, the expression of PcoI-PcoR QS system is auto-inducted, and the transcriptional factor PcoR is involved in the regulation of pcoI transcription and the biofilm formation.

Objective To establish the standard for quality control ofQingyan Granule. Methods The chief components of the preparation, Sophora Tonkinensis radix et rhizoma, Adenophorae radix, Lonicera japonica caulis, and Ophiopogonis radix were identified by TLC qualitatively. The contents of licorice glycosides and glycyrrhizic acid were determined by HPLC. The separation was performed on Thermo Syncronis C18 column (4.6 mm×250 mm, 5μm) with mobile phase consisted of acetonitrile with 0.05% phosphoric acid solution (A)-0.05% phosphoric acid solution (B), and gradient elution (0-8 min, 19%A;8-35 min, 19%→50%A). Detection wavelength was 237 nm, and flow rate was 1 mL/min.Results The spots in TLC were clear. There were spots with same color on the corresponding location of reference substance and reference herbal, negative control without interference. The linear range for licorice glycosides was 0.05-0.5μg (r=0.999 9). The average recovery was 99.97%, RSD=1.74% (n=9). The linear range for glycyrrhizic acid was 0.1-2μg (r=0.999 9). The average recovery was 99.74%, RSD=1.28% (n=9). Conclusion The method is simple, accurate, with high reproducibility, which can be used for quality control ofQingyan Granule.