This article outlines the arising, the research content, the related ethical issues and the future de-velopment of public health ethics. The related ethical issues contains the ethical issues of disease prevention and control, the ethical issues in group unit, the ethical issues in public health policy-making, the ethical issues un-der the influence of biological science, and ethics review issues related with the thinking methoods namely moderate diversity, avoiding the socialism and in a relationship. The last, the article points out the human subjects in bio-medical researches.

Objective To discuss the influence of hydrotherapy on jaundice of newborn. Methods We divided 400 newborn into the hydrotherapy group and the control group with 200 cases in each group randomly. The newborn in the hydrotherapy group received hydrotherapy from 24 hours to 30 days after born,one time per day and 15 minutes per time.The control group was given pure shower, the time of first defecation ,the time of meconinm turning yellow, jaundice index and incidence of hyperbilirubinemia were compared at the 1st,5th,10th and 30th days after born. Results The time of first defecation and the time of meconium turning yellow were advancer in the observation group than those in the control group(P<0.01 ).The jaundice index at the 5th,10th andf 30th days after born and the incidence of hyperbilirubinemia also decreased in the observation group compared with those of the control group (P<0.01 ). Conclusion Hydrotherapy could decrease the jaundice of newborn and prevent the incidence of kernicterus.

Objective To retrospectively analyze the ultrasonic imaging features and clinical out-comes of biliary complications after percutaneous ablation for hepatic malignant tumors .Methods The cli-nical data of patients with postablation biliary complications who underwent percutaneous ablation for hepatic malignant tumors in the past 7 years in our department were retrospectively analyzed .The ultrasonic imaging features and the clinical outcomes of biliary complications on follow-up of these patients were analyzed .Re-sults Postablation biliary complications occurred in 65 patients , including 34 patients with bile duct dilata-tion and 31 patients with biloma .In patients with bile duct dilatation , the dilated bile ducts were located dis-tal to the ablation lesions in all these patients .Among 30 patients with bile duct dilatation , the dilatation was progressive in 9 patients (9/30, 30.0%) and stable in 20 patients (20/30, 66.7%), while in one patient (1/30, 3.3%) it resolved on follow-up.The radiologic features of bilomas mainly manifested as four types:crescent , interspersed , circumferential and solitary nodular , and the number of patients with the four types were 13 (13/31, 41.9%), 13(13/31, 41.9%), 3(3/31, 9.7%) and 2(2/31, 6.5%), respectively. In 6 patients (6/31, 19.4%) the bilomas were subjected to interventional or surgical therapy while for the remaining 25 patients (6/31, 19.4%) they were treated conservatively .Three (3/25, 12.0%) of the lat-ter 25 patients had spontaneously disappearance of the biloma and 2 (2/25, 8.0%) of the remaining 22 pa-tients appeared to have progressive increase in size .In 17 (17/25, 68.0%) patients the biloma remained stable in size and in the remaining 3 patients (3/25, 12.0%) the bilomas resolved.Conclusions Postab-lation biliary complications of ultrasound-guided percutaneous ablation for hepatic malignant tumors mainly presented as biloma and bile duct dilatation .Dilated bile ducts were located in the distal side of the ablation zones.Crescent type and interspersed type were the most common morphological types of biloma .Although most patients with postablation biliary complications of ultrasound-guided percutaneous ablation remained sta-ble or resolved on follow-up, interventional or surgical therapy was necessary in the minority of patients .

BACKGROUND:In recent years, research on tendinopathy is becoming a hot topic in the sports medicine and rehabilitation, and the extracelular matrix plays a considerable role in the occurrence, development and healing of tendinopathy.
OBJECTIVE: To explore the relationship between tendinopathy and the extracelular matrix.
METHODS: CNKI, VIP, CBM, Wanfang, PubMed and Embase were retrieved for articles related to colagen, protein, glycoprotein and matrix remodeling published since 2000.
RESULTS AND CONCLUSION:After tendinopathy, there are obvious changes in colagen, proteoglycans, glycoprotein and related enzymes; and these changes also affect the reconstruction and repair of tendinopathy. Currently, most of researches focus on the tendon rather than the bone-tendon junction. This means that there are no in-depth studies on the correlation between many important proteins and tendinopathy, and the effects of exercise intervention.

Objective:To establish an HPLC method for the determination of gastrodin in Fufang Zhenma capsules. Methods:A YMC-Pack Pro C18(250 mm ×4.6 mm,5μm)column was used. The mobile phase consisted of acetonitrile-water (2 ∶98). The detec-tion wavelength was 220 nm. The flow rate was 1. 0 ml·min-1 ,the column temperatime was 20℃. the sample size was 25μl. Results:Gastrodin showed a good linear relationship within the range of 3.38-432.80 μg·ml-1(r =0.999 9). The average recovery was 97. 14% (RSD=2. 67%)(n=6). Conclusion:The method is feasible with good specificity and reproducibility, and can be used for the determination of gastrodin in Fufang Zhenma capsules.

Objective To establish a simple and high-performance analytical technique for detecting DNA methylation markers and SNPs simultaneously,and obtain the population genetics data of some SNPs in the hypermethylated region upstream of the human H19 gene.Methods The haplotypes of H19FR1 and H19FR2 which located in the promoter region upstream of the human H19 gene were investigated from 232 unrelated Chinese individuals living in Wuhan by means of PCR and subsequent denaturing gradient gel electrophoresis(DGGE).Based on the methylation status of the genomic DNA,selective detection of the parental alleles for H19FRs was examined by using the methylation-sensitive restriction enzyme(msRE) Hpa II or Hha I.Results Five haplotypes and nine phenotypes were observed for H19FR1 in Chinese Han population in Wuhan,and the power of discrimination(DP),polymorphism information content(PIC) and probability of paternity exclusion(PE) were 0.803,0.58 and 0.322 respectively.For the H19FR2,two haplotypes and three phenotyes were detected,and the DP,PIC and PE were 0.626,0.37 and 0.162 respectively.Sequencing results showed that there were 3 SNPs,a7342g,a7357g and g7547a,and one g7351c point mutation in H19FR1.In the H19FR2,there was only one SNP,a8097g.The msRE,HpaⅡ or HhaⅠ,could digest the maternal allele,and only a single band derived from the paternal allele was detected by post-digestion PCR-DGGE(PDP-DGGE) technique.Conclusion PDP-DGGE is a simple,sensitive and effective technique for analyzing DNA methylation status and SNPs simultaneously,and can be used for discriminating the parental origin of alleles.

Objective:To investigate the clinical significance of Th1/Th2 balance of peripheral blood Th cells and of serum high-sensitivity C-Reactive Protein(hs-CRP) in type 2 diabetic patients.Methods:Th1/Th2 cells were determined by using the tri-colored fluorescence labeled flow cytometry serum hs-CRP concentrations were determined by ELISA in type 2 diabetic patients (n=60) and the controls (n=25).Results:(1)Th1 cells and Th1/Th2 ratios were significantly reduced in type 2 diabetic patients than the controls (P 0.05 ). Th1 cells negatively correlated with HbA1c (r=-0.688 P

Background and purpose:Norcantharidin(NCTD)can inhibit the growth of tumors.In this study,we presented the chorioallantoci membrane(CAM)model to evaluate the effect of NTCD on angiogenesis and to study the anti-angiogenesis of NTCD in the chicken embro implant model of human breast carcinoma MCF-7 cells.Methods:The method was based on the implantation of gelatin sponges on top of growing CAM.The sponges were treated with various amounts of NCTD and 0.9% NaCl.Blood vessels surrounding CAM mesenchyme were counted.Then we established the MCF-7 chicken embryo implant model.The chicken embryo CAMs was treated with 0.9% NaCl,Various amounts of NCTD(72,36,18 ?g per 20 ?l)and the inhibition rates were calculated.Results:NCTD can inhibit the new capillary vessels growing into gelatin sponges placed on the CAM in a dose-dependent manner,and the inhibitory rates were 77.7%,62.9%,50.6% and 33.0% respectively.NCTD at the dosages of 72、36、18 ?g were able to inhibit capillary growth regardless of the angiogenic process induced by xenograft tumor and had a significant inhibition as compared with the control group,and the rates were 66.2%,39.3%,22.8% respectively.Conclusions:NCTD has an anti-angiogenic effect for targeting tumor angiogenesis.NCTD may be a potential therapeutic candidate for clinical application.

Objective To evaluate the visual results,surgical technique and safety of secondary intraocular lens (IOL) implantation in aphakic eyes following vitrectomy and lensectomy for complicated ocular trauma or retinal detachment. [WT5”HZ]Methods The clinical records of 32 cases (32 eyes),received these surgeries during November 1996 and December 1999,were reviewed retrospectively.During the secondary operation,intraocular infusion through the pars plana was performend and the type of IOL was chosen based on the integrity of lens capsule. [WT5”HZ]Results The study included 30 eyes suffering from trauma (foreign bodies in 15 eyes,penetrating injury with traumatic endophthalmitis and with vitreous hemorrhage in 6 eyes respectively,blunt trauma with lens dislocation in 3 eyes),and 2 eyes with primary retinal detachment.Those eyes all received vitrectomy,lensectomy,and/or removal of foreign bodies and corneal suture.The interval of two operations ranged from 1 to 16 months with an average of 6.8?3.7 months.Posterior chamber IOL was implanted in the ciliary sulcus in 25 eyes with a whole or 2/3 of lens capsule,trans scleral suture fixation of IOL in 5 eyes,anterior chamber IOL and IOL with artificial iris in one eye respectively.Silicone oil was removed in 5 eyes during the secondary operation.Post operative visual improvement was achieved in 29 eyes.Main complications were corneal edema and low intraocular pressure after operation. [WT5”HZ]Conclusion Intraocular infusion and proper IOL implantation during the secondary operation following vitrectomy can provide selected aphakic eyes with better visual recovery.

Objective To explore the effect of 25% insulin lispro( Mix 75/25) intensive treatment on plasma glucose and pancreatic function in newly diagnosed type 2 diabets. Methods Sixty patients with newly diagnosed type 2 diabetes were treated by 2 months 25% insulin lispro(Mix 75/25) treatment. The level of fasting plasma glucose (FPG) ,2 hours postprandial glucose (2hPG), glycosylated hemoglobin A1c (HbA1c), the fasting insulin and Cpeptide, insulin resistance index (HOMA-A), insulin secretion index (HOMA-B), insulin sensitivity index (ISI) and the ratio of fasting insulin to fasting glucose(FINS/FPG) were compared before and after 25% insulin lispro(Mix 75/25) treatment. Results After the treatment,FPG,2hPG,HbA1c and HOMA-A were significantly decreased( all P＜0. 01 ) ;the fasting insulin and C-peptide,FINS/FPG, HOMA-B and ISI greatly increased( all P＜0. 01 ). Conclusion 25% insulin lispro( Mix 75/25) intensive treatment can effectively improve plasma glucose and pancreatic function in newly diagnosed type 2 diabetes.