This study is to investigate the protective effect of mangiferin on NF-kappaB (P65) and IkappaBalpha expression in peripheral blood mononuclear cell (PBMC) in rats with cigarette smoke induced chronic bronchitis. The rat model with chronic bronchitis was established by cigarette smoke. Real-time fluorescence RT-PCR was executed for evaluating the NF-kappaB (P65) and IKkappaBalpha gene expression in mononuclear cell, and flow cytometry for their protein expression. The serum hs-CRP (high-sensitivity C-reactive proteins) and TNF-alpha (tumor necrosis factor-alpha) were detected by enzyme-linked immunosorbent assay. The histopathological score was obtained from lung tissue HE staining slides of lung tissue. The results showed that mangiferin could markedly suppress the NF-kappaB (P65) mRNA and protein expression in mononuclear cell, while promote the IkappaBalpha mRNA and protein expression. Furthermore, mangiferin could lower serum hs-CRP and TNF-alpha level, and reduce the chronic inflammatory damage of bronchiole. These results suggested that mangiferin could notably ameliorate chronic bronchiole inflammation induced by cigarette smoke, and this protective effect might be linked to the regulation of NF-kappaB (P65) and IkappaBalpha expression in mononuclear cell.
Animals ; Bronchi ; pathology ; Bronchitis, Chronic ; blood ; etiology ; metabolism ; pathology ; C-Reactive Protein ; metabolism ; I-kappa B Kinase ; genetics ; metabolism ; Leukocytes, Mononuclear ; metabolism ; pathology ; Male ; Mangifera ; chemistry ; Plants, Medicinal ; chemistry ; RNA, Messenger ; metabolism ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Tobacco Smoke Pollution ; Transcription Factor RelA ; genetics ; metabolism ; Tumor Necrosis Factor-alpha ; blood ; Xanthones ; isolation & purification ; pharmacology

Objective To develop the human colon carcinoma(HT-29) liver metastasis model in nude mice,and to detect the expression of human telomerase reverse transcriptases(hTERT) mRNA in liver of nude mice. Methods Liver metastases were established in 30 Balb/c nude mice by intrasplenic injection of colonic cancer cells(HT-29),and the spleens were resected.After being sacrificed,the tumor growth was observed,and the pathological examinations were performed.The expression of hTERT mRNA in the livers of nude mice was detected by RT-PCR technique. ResultsHuman colon carcinoma(HT-29) liver metastasis model was developed in all the 30 nude mice,with the liver metastasis rate of 100%.The pathological results revealed the occurrence of liver metastases,and the expression of hTERT mRNA was positive in the liver tissues. Conclusion Intrasplenic injection of HT-29 cell is a reliable way for producing colonic cancer liver metastasis model,and the positive expression of hTERT mRNA in liver tissues indicates the significance of hTERT in the early diagnosis and treatment of colon carcinoma liver metastasis.

?AlM: To evaluate the relationship of early-life and childhood exposures and age-related cataract ( ARC ) , and provide a scientific evidence for early preventing, treating and detecting ARC.
?METHODS: A hospital-based case control study was conducted from April 2011 to October 2012. A total of 360 cases ( 360 eyes ) aged 41 ~ 60 years old for cataract extraction and 360 frequency-matched controls in the same hospital for various not related to ARC were included in the study. A structured interviewer -administrated questionnaire that included information on sociodemographic characteristics, early - life and childhood exposures was used. The risk factors of ARC were estimated with unconditioned logistic regression models.
?RESULTS:Early gestational age at birth sooner and lower birth weight was significantly associated with the risk of ARC(OR=1. 152,95%CI:1. 029~2. 235,P=0. 024;OR=1. 374, 95%CI:1. 156 ~2. 581,P=0. 037,respectively). The maternal pre-pregnancy diabetes ( OR=1. 587, 95%CI:1. 177~2. 915,P=0. 019),gestational diabetes (OR=1. 763, 95%CI:1. 375 ~ 2. 367,P= 0. 004), preeclampsia(OR=1. 581, 95%CI: 1. 139 ~1. 996,P=0. 021), and pregnancy induced hypertension (OR=1. 517, 95%CI:1. 032~1. 963,P=0. 024) could make the risk of ARC increased. Of the factors affecting the period of children, only shorter height relative to peers and overweight at age 10 were significantly associated with the risk of ARC( OR=1. 329, 95%CI:1. 072~2. 351,P=0. 038;OR=2. 302, 95%CI:1. 323~3. 196,P=0. 011, respectively).
?CONCLUSlON:Early gestational age at birth, low birth weight, the maternal pre - pregnancy diabetes, gestational diabetes, preeclampsia, and gestational hypertension, and shorter height and overweight relative to peers, at age 10 were risk factors of ARC. But lasted long large and prospective studies are needed to insure early risk factors for ARC in the Chinese population.

AlM:To investigate the effect of teaching mode of problem- based learning ( PBL ) in the teaching of medical students' clinical ophthalmology.
METHODS: Five classes ( total 148 students ) were randomly selected as experimental group, using PBL method, at the same time another 5 classes ( total 151 students) were also randomly selected as control group, using lecture-based learning ( LBL) mode in 2010 grade. The scores of the experimental group were compared with control at the end of term. ln addition, students and teachers were respectively interviewed using self -administered questionnaire to obtain their evaluation for PBL practice.
RESULTS:The mean scores of PBL group (78. 35±7. 63) were significantly higher than control group (71. 68±6. 37) (P<0. 001). Most of students thought that their ability of referring, synthesizing and analyzing information was enhanced by PBL, and their skills both in written and oral were also improved. PBL made it easier to understand the contexts of course. lt was the best way to improve the effect of teaching in ophthalmology based on the increase of quality in novitiate that gives more chance to students of contacting with practice, developing the ability of clinical thinking and verifying the theory in clinical novitiate. Lots of teachers considered that the classroom atmosphere was more active, students were becoming more and more proactive on their classes and the relationship between students and teachers were more harmonious when PBL was used.
CONCLUSlON:Using PBL teaching mode can highly improve the teaching effectiveness of clinical epidemiology, which is worth popularizing.

Bronchoscopy ; Child ; Congenital Abnormalities ; pathology ; Humans ; Respiratory System ; pathology

Bronchoscopy ; Child ; Congenital Abnormalities ; pathology ; Humans ; Respiratory Tract Diseases ; complications ; pathology

Objective To investigate the proliferation and identification of dendritic cells(DC)de- rived from peripheral blood of patients with bladder cancer in vitro.Methods The mononuclear cells were prepared from peripheral blood of patients with bladder cancer by Ficoll-Hypaque centrifugation method,and were induced by the recombinant cytokines hGM-CSF(50 ng/ml),hlL-4(10 ng/ml)and hTNF-?(50 ng/ ml)for 2 weeks.The growth and morphology of DC were observed through the phase contrast or electron mi- croscope,and their pheuotypes were determined by flow cytometry.The capacity of DC to activate T cell-de- pendent anti-tumor immune responses was tested by MTT method.Results The DC cultured in vitro turned into suspensive growth from adhesive situation on the 6th day,then the number of DC increased con- tinuously and the cells showed the irregular morphologic appearance of DC with veiled edges on the 8th day. Flow cytometry showed that the mature DC expressed high levels of specific markers such as CD_(1a),CD_(83), CD_(86)and HLA-DR.T cells activated by DC showed strong cytotoxicity to bladder cancer cell line BIU87 with a killing rate of(48.8?3.7)%,while the killing rate of T cells which were not activated by DC was(25.7?1.5)%;the difference of the rate between them was significant(P＜0.01). Conclusions The DC can be cultured from peripheral blood of patients with bladder cancer by induction of rhGM-CSF,rhIL-4 and hT- NF-?in vitro.This may lay an experimental foundation for further research on DC vaccine.

Objective To study the effects of salt sensitivity on evolution of blood pressure and develope- ment to hypertension from adolescents to youth.Methods A baseline survey was carried out in 4623 adolescents aged 6-15 years old in Hanzhong rural area in 1987,310 of them were recruited for determination of salt sensitiv- ity using the tests of oral saline load and furosemide sodium-volume depletion.Salt sensitivity (SS) were diag- nosed in 101 while 209 subjects as no-sah sensitivity (NSS).This cohort of adolescents were followed up for av- erage 18 years.Results The response rate for this cohort of adolescents was 71.9%.At the end of follow up period,BP in subjects with baseline SS was higher in youth than that in NSS (SBP:122.9?13.1 vs 117.3?12.4, P

This research was a part of the investigation of traditional Chinese medicine resources survey in Markam. The medicinal plants in natural reserve were studied for the first in this paper. There were 300 species in 202 genera of 54 families, among them there were 7 species of ferns in 5 genera of 5 families, 6 species of gymnosperms in 4 genera of 3 families, and 287 species of angiosperms in 194 genera of 61 families. There were 166 species Tibetan medicinal plants in 102 genera of 47 families. Quantitative analysis was carried out in 6 aspects of family and genus composition, medicinal parts, drug properties, flavour of a drug, Tibetan medicine, toxicity and new plants. The concrete suggestions of protection and exploitation were put forward, which provided scientific basis for the sustainable utilization of medicinal plants in this area.
Biodiversity ; Conservation of Natural Resources ; Medicine, Tibetan Traditional ; Plants, Medicinal ; Tibet

Objective To observe the changes of antithrombin activity(AT) and D-dimer in acute leukemia(AL)children complicated with disseminated intravascular coagulation(DIC) and to explore the changes of blood coagulation and fibrinolysis function.Methods Twenty-seven AL children without DIC were selected as AL group and 25 childern complicated with DIC were selected as observe group,36 health children were as control group.Plasma level of AT,D-dimer,fibrinogen,activated partial thromboplastin time and prothrombin time were tested by color substrate,immuno-latex turbidimetry,and coagulation method.And the rusults of AL group were compared with observe group and control group by SPSS 10.0 software.Results PT was significantly prolonged and the D-dimer in AL group and observation group were significantly higher than those in control group(Pa