BACKGROUND:Studies have shown that methylation modification using CARM1-catalyzed histone H3R17/R26 can maintain the stemness of embryonic stem cel s. However, mechanism underlying CARM1 effect on the stemness of amniotic fluid-derived stem cel s is stil unclear.
OBJECTIVE:To investigate the function and underlying molecular mechanism of CARM1 to maintain stemness in the amniotic fluid-derived stem cel s.
METHODS:Amniotic fluid-derived stem cel s from term pregnancy were isolated and cultured. RT-PCR was used to identify the stem cel mark and CARM1 gene expression. CARM1 expression in amniotic fluid-derived stem cel s was knocked down by using two shRNA. RT-qPCR was used to detect the silencing efficiency, and western blot employed to examine the methylation level of Arginines 17 at N terminus of histone 3 (H3mR17). Moreover, the expression of embryonic stem cel markers, including OCT4, SOX2 and NANOG, were detected.
RESULTS AND CONCLUSION:Amniotic fluid-derived stem cel s from term pregnancy could express CARM1 and stem cel markers, including OCT4, SOX2, Nanog and KLF4. Both of the shRNAs could knock down the expression of CARM1 efficiently. When CARM1 was knocked down, the H3mR17 level was decreased and OCT4, SOX2 expression was also reduced, but NANOG expression had no change. Al these indicate that CARM1 is required for amniotic fluid-derived stem cel s to maintain stemness through regulating OCT4 and SOX2 expression.

ObjectiveTo evaluate the effect of lifestyle intervention on high-risk individuals for hypertension. MethodsOne hundred and four prehypertensive adults who received physical examination during October 2005 and October 2007 and showed at least 2 hypertension risk factors were randomly assigned to the experimental or control group.A muhicomponent behavioral intervention,including health education(e.g.awareness of disease),metary gmdance,physical.exercise,and psychologtcat improvement,Was conducted for 2 years.The awareness of disease,blood pressure,bedy weight,and the change of risk factors were compared.ResultsAt 2 years,the awareness of disease in the experimental group wag significantly improved,and the blood pressure,body weight,and risk factors were obviously reduced.Although the awareness of disease and the risk factors in the control group were improved,the blood pressure and body weight were increased.The difference in average systolic blood pressure,average diastolic blood pressure,body weight,and the awareness of disease between the two groups were 13 mm Hg(1 mm Hg=0.133 kPa),7.9 nlnl Hg,3.7 kg,and 37.6%,respectively(all P<0.05).ConclusionThe lifestyle intervention among high-risk individuals for hypertension could effectively reduce blood pressure and body weight. Improved lifestyle would result in less risk factors.

Objective To analyse the clinical features of community-acquired pneumonia(CAP)in out-patients.Methods A retrospective study was performed on 179 consecutive patients with CAP in fever clinic of Xuanwu Hospital during two months.Results Most of CAP patients were young(aged 14 to 30 years,accounting for 58.1%)and had no-existing diseases(72.6%).Within 2 to 4 days after onset of fever,50%~80% of patients were diagnosed as CAP.About 1/3 of patients had no respiratory symptoms except for fever.Cough and sputum production was seen in 52.5% of patients.WBC was normal in 63.1%.Unilateral pneumonia often occurred(accounting for 82.1%).After treatment with antibiotics,fever in 80%(42/52)of cases disappeared within 3 days in follow-up patients.Conclusion In fever clinic,most patients are young and have no-existing diseases.They can be identified as CAP quickly and have good outcomes.

OBJECTIVE:To prepare Qingyang tea bag and establish the standard of quality control.METHODS:The Flos Lonicera and Radix Glycyrrhize were identified by TLC.The content of chlorogenic acid,the main active component in the tea derived from Flos Lonicera,was determined by TLCs.RESULTS:Linearity was found in the range from1.2?g～4.8?g of chlorogenic acid,r=0.9993;the average recovery was99.50%and RSD=2.39%.CONCLUSION:The method was found to be simple,precise and may be used for the quality control of the preparation.

OBJECTIVE:To improve the quality of GSP certification and accelerate the proceedings of certification in China.METHODS:This paper introduces the current situation in the certification,also points out the existing prob?lems.RESULTS&CONCLUSION:Goverment concerned should strength the GSP training and the leaders in the drug busi?ness enterprises must attach importance to GSP certification and value the training inside the enterprises to raise the quality of staff,also they must keep the same level after passing GSP certification.

Objective To explore the related factors of nosocomial infection in children with leukemia and its character.Methods Retrospective analyzed 96 leukemia children with nosocomial infection who were come from 220 patients with acute leukemia.The information of the infection rate at different chemotherapy stages,different hospitalization time,site of infection and strain condition were recorded.Results (1) The infection rate of leukemia children at induction and consohdation stage were 85.7％ (24/28) and 76.7％ (23/30) respectively.(2) The infection rate increased with the duration of hospitalization periods.The infection rate was 8.6％ (3/35) at 0-7 d hospitalization periods and 62.7％ (42/67) at 15-30 d hospitalization periods.(3) The infection was prone to occurring at respiratory tract (58.3％,56/96),followed by gastrointestinal tract (17.7％ (17/96)),blood (13.5％ (13/96)),skin (8.3％ (8/96)) and other parts (2.1％ (2/96)).(4) The most frequency stain listed as Escherichia coli(21.8％ (26/96)),and Citrobacter (16.8％ (20/96)).The lower detection rates of the bacteria listed as Candida albicans (2.5％ (3/96)),Aspergillus(1.7％ (2/96)) and yeast (0.8％ (1/96)).Condusion Even though the survival rates of leukemia children is increasing due to technology development,nosocomial infection frequently occur.The high infection rates occur at chemotherapy induction and consolidation phase.Therefore intervention should be taken based on nosocomial infection in children leukemia such improving the environment of ward,enhancing the immune ability of children in order to decrease the incidence of hospital infection.

Objective To evaluate the relationship between serum C‐P levels and microvascular complications in patients with T 2DM. Methods The clinical data of 434 patients with T2DM were retrospectively analyzed. All subjects were divided into three groups based on ΔC‐P (2 hC‐P - FC‐P) tertiles :ΔC‐P1(≤2.2 ng/ml) ,ΔC‐P2(2.3~4.0 ng/ml) and ΔC‐P3(≥4.1 ng/ml). Results The levels of BMI ,TG ,FC‐P were lower ,and the course and HbAl c were higher in ΔC‐P1 group. ΔC‐P level was positively associated with BMI and TG (P< 0.05) ,and negatively associated with prevalence of DR and chronic kidney disease (CKD)in diabetes ,course and HbA1 c.ΔC‐P levels decreased gradually with the progression of DR and CKD. Logistic regression analysis showed that lower ΔC‐P level was the independent risk factor for microvascular complications after adjustment for related risk factors. Conclusion Serum ΔC‐P level is an independent factor for the development of diabetic microvasculr complications in T 2DM.

Long non-coding RNA (lncRNA) widely exists in living organisms.It,whose length is more than 200 bp,can regulate the genic expression in the epigenetic,transcriptional and post-transcriptional level.Therefore,it can influence cell proliferation,apoptosis,vitality,immune response and oxidative stress.In recent years,the study of lncRNA is developing rapidly in the ophthalmic research,and this article reviews the latest research progress on mechanism of lncRNA in the ophthalmology disease.

Objective To measure the parameters of mitral valve leaflets and mitral annulus in patientswithmildmitralregurgitation( MR )byreal timethree-dimensionaltransesophagealechocardiography (RT-3D-TEE),and explored the mechanism of MR.MethodsFifty-seven MR subjects were selected and twenty-eight subjects without mitral regurgitation were served as control group,all subjects were examined by RT-3D-TEE and acquired image,mitral valve quantification (MVQ) software was used for post-processing.Mitral annulus parameters (H/DAIPm,E2D,θAv-Mv,mitral annulus θnpa) and mitral valve leaflets parameters(A3DE,L2DAIPm,VA1-3tentVp1-3tentVtentHtentθnpa ) at the end of systolic were measured.The results of two groups were compared,and the most affected parameters to mild mitralregurgitation were selected.Results Compared with control group,VA3tent was decreased,mitral annulus θnpa and L2DAIPm increased,and the mitral valve leaflets θnpa was independently correlation factor of mild mitral regurgitation.ConclusionsThe mitral annulus geometry to flat in subjects with mild MR,the mitral valve local area is increased in subjects with mild MR,the mitral valve leaflets θnpa is independently correlation factor of mild mitral regurgitation.

Objective To investigate the effects and mechanism of hypoxia on the growth and invasion of human cervical cancer Hela cells. Methods Hypoxia microenvironment was mimicked by cobalt chloride (CoCl2), in which the growth of Hela cells were determined by MTT method, the migration ability was detected by scratch test, and the expressions of HIF-1αand Vimentin protein were measured by immunofluorescence. Results The growth of Hela cells treated with 150 μmol/L of CoCl2 for 6 h was promoted. The migration ability in hypoxia group at 48 h was significantly higher than that in ordinary oxygen group. The expressions of HIF-lαand Vimentin in Hela cells in hypoxia group were significantly higher than those in ordinary oxygen group. There was significantly positive correlation between the expressions of HIF-1α and Vimentin (P < 0.05). Conclusion Hypoxia could promote the expression of HIF-lα, which then could up-regulate the expression of Vimentin , and finally enhanced the ability of invasion and metastasis of Hela cells.