Objective: To establish a cephalometric norms of Downs analysis for Korean population in China. Methods: 72 Korean adults in Yanbian with normal occlusion and harmonious face were selected. Lateral cephalometric radiographs were taken and analyzed with Downs analysis. The data was compared with the norms of the Korean in Seoul, Republic of Korea, which reported by Park. Results: Means, standard deviation of Downs polygon of our samples were presented. Differences between males and females were found in our samples: Facial angle in males group was smaller than that in females group. Angle of Yaix, L1 to mandibular plane, L1 to occlusal plane and U1 to AP plane in male group were larger than female group(P<0.05). Statistically significant differences were detected between our samples and Park's: Facial angle in Yanbian group was smaller than Soul group, while, Yaxis and occlusal plane was larger in Yanbian group. Angles of convexity of Yanbian males were larger than Soul males(P<0.05). Statistically significant differences were detected between our sample and Han group in Northeast China: Facial angle and AB-NP angle were larger than Han group. Angle of mandibular plane, angle of Yaix, L1 to mandibular plane, L1 to occlusal plane, angle of U1 to L1were smaller than Han group (P<0.05). Conclusion: Korean males in Yanbian district tend to have more convex profiles than females. Compared with Korean population in Seoul, Korean in Yanbian have more convex facial profile. Facial characteristics of Korean in Yanbian are between Korean population in Soul and Han population in Northeast China.

The recently successful cloning of extracellular calcium sensing receptor (CaR) has revealed its vital role in adjusting and maintaining the homeostasis calcium or even other mineral ion in the body. CaR belongs to the big family of G-protein coupled receptors, and has 1079 amino acids in its structure. CaR is broadly distributed in a variety of tissues, including parathyroid, thyroid C cells, kidney, intestine and bone. So far, three disorders of extracellular calcium homeostasis have been linked with abnormalities of CaR function. Agonists and antagonists of CaR may be proved useful in the treatment of the diseases due to calcium metabolic disorders.

Objective To study the effect of ATRA and IFN? on growth and differentiation of SH-SY5Y cell line and the possible molecular mechanisms.Methods The expression of TrkA mRNA was detected by RT-PCR.Trypan blue exclusion was used to detect the antiproliferative effect of ATRA,IFN?and ATRA +IFN? on SY5Y cells.Morphologic changes were observed using phase-contrast microscopy.Results TrkA mRNA was upregulated by ATRA and IFN?.ATRA and IFN? could induce morphological differentiation and inhibit growth of SY5Y cells.The combination of ATRA+IFN? enhanced the induced differentiation and growth inhibition of SY5Y cells.Conclusion Synergistic effects of ATRA and IFN? on growth inhibition and inducing differentiation in SY5Y cells are observed and this may result from upregulating the expression of TrkA mRNA.

Objective To study the consistency in the diagnosis of preoperative TNM rectal cancer staging using high resolution magnetic resonance imaging (MRI) and transrectal ultrasound (TRUS) combined with carcinoembryonic antigen (CEA) and postoperative pathological TNM.Methods 156 cases pathologically proven were retrospectively analyzed and divided into 4 groups including preoperative MRI group (39 cases),TRUS group (39 cases),MRI and TRUS group (39 cases),MRI and TRUS combined with CEA group (39 cases).The differences between preoperative T,N staging and postoperative pathologic T,N staging were analyzed.Results There were statistically significant differences in the diagnosis of preoperative T and postoperative pathological T in 4 groups (T: Kappa =0.685,P =0.000; N: Kappa =0.544,P =0.000),but there were no significant differences in preoperative N and postoperative pathological N staging in preoperative MRI group,TRUS group,MRI and TRUS group (Kappa =0.142,P =0.329; Kappa =0.154,P =0.645; Kappa =0.154,P=0.229),and significant difference was observed in MRI and TRUS combined with CEA group (Kappa =0.544,P =0.000).There were no significant differences in the accuracy of T staging among the 4 groups (x2 =0.326,P =0.574; x2 =0.562,P =0.719; x2 =0.287,P =0.986),but significant difference in the accuracy of N staging were showed among the 4 groups (x2 =4.643,P =0.026; x2 =6.643,P =0.026; x2 =5.243,P =0.019).Conclusion Preoperative evaluation by the MRI add TRUS combined with CEA can improve the accuracy of preoperative staging,which can provide more reliable basis for decision-making and improve the coincidence rate of operative procedures in line with the estimate.It also provides the basis fur the accurate preoperative diagnosis and individualized treatment.

Store operated calcium channels (SOCCs) are referred to as plasma membrane calcium channels that are opened in response to a depletion of intracellular calcium stores. SOCCs are broadly distributed in excitable and non excitable cells, and may play important roles in conducting intracellular calcium signals, modulations of cell functions and gene expression. Although the current understanding of SOCCs related mechanism is still limited, the physiological significance of SOCCs and their possible links to certain diseases have been suggested. Future study of highly selective SOCCs modulating agents may promote not only related research, but also the development of novel therapeutic drugs.

Objective To study the influence of Captopril preconditioning on apoptosis and the expression of gp 130 in rats of acute myocardial injured. Method Wistar rats were randomly divided into three groups:control group, Iso group and Cap preconditioning group. Cardiomyocytes apoptosis was detected with TUNEL method. The expressions of Bcl-2 and Bax proteins in myocardium were tested by immunohistochemistry. The expression of gp 130 was tested with Western blot method. Results The index of cardiomyocytes apoptosis was decreased, the expressions of Bax proteins and gp 130 were decreased and the expression of Bcl-2 proteins was increased in Cap preconditioning group compared with Iso group (P<0.01 or P<0.05). Conclusion The expression of gp 130 could be decreased through Cap preconditioning, which can reduce the cardiomyocytes apoptosis.

Objective To investigate the effect of Shugan-Yishen formula on Tamoxifen-resistant MCF-7 cell line(LCC9) through HER2-ERK/MAPK-ERα pathway. Methods Four serums were prepared with the method of serum pharmacology:the serum of Shugan-Yishen formula, Shugan-Yishen formula plus Tamoxifen(TAM), blank and TAM alone. After LCC-9 cells were affected in the above-mentioed serums in vitro, the inhibition rate and the level of mRNA as well as the protein expression of HER2, ERα, ERK/MAPK, p-ERK/MAPK were detected. Results MTT showed that TAM alone group、Shugan-Yishen formula group and the Shugan-Yishen formula plus TAM group had higher inhibition rates at 48th hour, the inhibition rates was(6.61±0.129)%, (47.43±2.24)%, (54.19±3.364)%, compared to the blank group, Shugan-Yishen formula group and the Shugan-Yishen formula plus TAM group had a stronger inhibition on LCC9 at 48th hour (P<0.05), and the combination group was better than Shugan-Yishen formula alone(P<0.05), there was no difference between TAM group compared to the blank group(P>0.05). RT-PCR result showed that compared to the blank group, the expression levels of ESR1 mRNA of group of Shugan Yishen formula plus TAM werehigher by and large at 48th hour (P<0.05), the expression of ESR1 mRNA was(2.282±0.185);and the levels of ERBB2, MAPK3 mRNAwere lower(P<0.05), which levels were(0.71±0.095), (0.336±0.058). Western blotting result showed that Shugan-Yishen Formula plus TAM group could markedly decrease the expression of HER2, p-ERK/MAPK of LCC9 at 48th hour (P<0.05), which the expressions were(0.708± 0.072), (0.228±0.034), and the expression of ER-αelevated(P<0.05). There was no significant difference on ERK/MAPK(P>0.05). Conclusions ①The combination of Shugan-Yishen formula with tamoxifen can inhibit the LCC9 cells. The inhibition effect reaches the peak at 48th hour. ②The mechanism of Shugan-Yishen formula plus TAM combination effects on human breast cancer TAM-resistant cell line LCC9 may improve the sensitivity of ERαby inhibiting the expression of HER2, ERK/MAPK.

Objective To know the situation of the hepatitis C virus(HCV)infection in blood donors of Maoming City,and pro-vide the basic data for recruiting volunteer blood donors and preventing of HCV infection.Methods Blood samples were collected in Maoming blood center,and were detected by using HCV antibodies of different manufacturers and operated by different people.Du-plicate test was used to reexamine the specimens which were reactive in the initial test.Statistical analysis was performed.Results HCV prevalence of blood donors from Maoming was 0.74%.The prevalence of female was slightly higher than the male,but the difference was not statistically significant(P >0.05).The HCV prevalence of civil servant and medical personnel was relatively low-er.HCV prevalence of repeat blood donors was obviously lower than blood donors for the first time(P <0.05).Conclusion HCV prevalence of blood donors in Maoming City was in a relative low level.The risk of HCV infection in people who is younger than 35 years old and at the same time qualified to donate blood is quite low.Establish a stable volunteer blood donor group is beneficial to blood safety.It's necessary to strength the propaganda and prevention of HCV knowledge to population besides civil servant and medical personnel,which would be helpful for the control of HCV infection.

An investigation on lipid composition of cow milk in shanghai has been successively made on the day 1,5,8(colostrum) and 45(mature milk) after parturition. The results were as follows; 1. The contents of total lipid, fatty acid, triglyceride, cholesterol and fat soluble vitamin A,E,D3 and (3 -carotene were highest on the 1st day, signinificantly different from the 45th d-ay(p

Objective To evaluate the relationship between femoral artery intima-media thickness (FA-IMT), stiffness, hemodynamics factors of femoral artery and peripheral vascular disease (PVD) in type 2 diabetes mellitus. Methods According to the presence of PVD, 151 patients with type 2 diabetes were divided into PVD group and non-PVD group. FA-IMT was tested with 2D ultrasound. Ds, Dd, PSV, EDV were observed with color flow rate and volume quantitative technology. FA-IMT, FA-stiffness β, peak systolic velocity (PSV) and end diastolic velocity (EDV) were compared between the two groups. Results Compared with non-PVD group, FA-IMT and FA-stiffness β increased in PVD group (P＜0.01), whereas PSV and EDV decreased in PVD group (P＜0.01). There was no relationship between FA-stiffness β and FA-IMT in PVD group (P=0.01). Multiple Logistic regression indicated the presence of PVD symptoms associated closely with FA-stiffness β, PSV, EDV and duration of diabetes. Conclusion Stiffness β plays an important role in the clinical evaluation of type 2 diabetes mellitus.