Objective To study on the effectiveness of endoscopic ultrasonography(EUS)in detec- ting insulinoma preoperatively.Methods Fifteen patients with clinical and biochemical signs of insulinoma were examined by EUS using a radial-scanning ultrasound endoscope and abdominal ultrasonography,CT, DSA prior to surgery.The outcome was evaluated on the basis of surgery and examination of the resected specimens.Results Fifteen patients with 16 lesions of insulinoma were identified by surgery and pathology. The aceuraey of diagnosis with EUS was 13/15(86.7%),and that with B-US,CT,DSA was 3/15(20%), 5/15(33.3%),9/14(64.3%)respectively.In the 14 lesions identified by EUS,10 lesions were depicted to be hypoechogenic,1 lesion was isoechogenic and 3 lesions were hyperechogenie.All 14 lesions were well demarcated and surrounded by normal pancreatic tissue.The minimum size of the lesion visualized by EUS was 0.5cm.Ten lesions were correctly detected by EUS with size of 0.5～2.0cm.EUS missed diagnosis in 2 lesions not for their small size.EUS falsely indicated a 10mm lesion from two lesions inside the head of pancreas.One lesion outside the pancreatic tail and one lesion in the pancreatic head were missed by EUS in another case.Conclusion EUS is superior in assessing the location of pancreatic insulinoma than other ima- ging methods such as B-US,CT,DSA.

Objective To investigate the impact of reduced glutathione(GSH) on the prolifera- tion,oxidative stress and transforming growth factor?1(TGF-?1) expression of human hepatocytes and hepatic stellate cells(HSCs)(LX-2 cell line).Methods Human hepatocytes and HSCs were incubated with various concentrations of GSH(0.5—50 mmol/L or 0.5—10 mmol/L).The effects of GSH on the proliferation of hepatocytes and HSCs were studied by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphennyhera- zolium bromide colorimetric assay.Human hepatocytes and HSCs were co-cultured with GSH and ferric nitrilotriacetic acid,superoxide dismutase (SOD) activity and malondialdehyde (MDA) contents were detected.HSCs were incubated with high(5.0 mmol/L),media(2.5 mmol/L) and low (0.5 mmol/L) concentrations of GSH,the expressions of TGF-?1 mRNA and protein were detected by ELISA and real- time PCR.Results In concentration ranged from 2.5 to 10 mmol/L,the GSH could promote the pro- liferation of hepatocytes but no HSCs,significantly increased the activity of SOD and decrease the con- tents of MDA in hepatocytes and HSCs,and inhibited the expression of TGF-?1 in HSCs.Conclusions GSH can not only promote the proliferation of hepatocytes,but also protect hepatocytes and HSCs from oxidative stress,and inhibit the secretion of TGF-?1 in HSCs.GSH may play a role in hepatocellular protection,antioxidation and anti-fibrosis.

Salvia miltiorrhiza is a highly valued traditional chinese medicine for the treatment of atherosclerosis-related disorders in china, such as cardiovascular and cerebrovascular diseases in China. The wilt disease is serious in the culture of S. miltiorrhiza. Wilt disease cause biomass of plant shoots and roots is lessened, active components are decreased. To solve these problems, we research the pathogen causing wilt disease of S. miltiorrhiza. The suspected pathogen is identified by morphology and etiological test. The identification was further confirmed by alignment the sequences of internal transcribed spacer (ITS) amplified by PCR. Our result show the wilt disease of S. miltiorrhiza mostly occurred in July and August, which is hot and wetter. The wilt disease rate of S. miltiorrhiza continuous cropping for one year in S. miltiorrhiz stubble is 10%, but the wilt disease rate of S. miltiorrhiza continuous cropping for three years in S. miltiorrhiz stubble is 60%-70%. The root rot of S. miltiorrhiz caused by the wilt disease, so the wilt disease was mistaken for the rot root in production. Morphological characteristics show the pathogen is Fusarium oxysporum. The sequence of ITS wes determined and found by BLAST shared 99% identity to that of F. oxysporum f. sp. cucumerinum. So it comes to the conclusion that the causing agent of wilt disease on S. miltiorrhiza belongs to F. oxysporum.
DNA, Intergenic ; genetics ; Fusarium ; genetics ; isolation & purification ; physiology ; Plant Diseases ; microbiology ; Polymerase Chain Reaction ; Salvia miltiorrhiza ; microbiology ; Seasons

Animals ; Behavior, Animal ; drug effects ; Depressive Disorder ; drug therapy ; psychology ; Eleutherococcus ; Male ; Plant Extracts ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Stress, Psychological

Objective To investigate the status of the disease of the fluorosis and arsenism caused by coal-burning in Ankang city of Shaanxi. Methods Nine survey spots were chosen to carry out the epidemiological investigation of adult skeletal fluorosis and arsenism in the coal-polluted areas of Ankang, respectively using Determination of Fluorine in Coal (GB/T 4633-1997) to determine the coal fluorine and using hydride generation atomic fluorescence spectrophotometry(HCAFS) to determine coal arsenic. The diagnose of the adult skeletal fluorosis followed the Diagnosis of Clinical Classification for Endemic Skeletal Fluorosis Standard(GB 16396-1996), that of arsenism using Standard of Diagnosis for Endemic Arsensim (WS/T 211-2001). Results Totally 569 adults were investigated over the age of 16, among which 121 cases were skeletal fluorosis, with a total detection rate of 21.27%. Four cases of II degree and higher skeletal fluorosis patients were identified, accounting for 0.70% of the number of subjects. One hundred and thirty-two cases of arsenic poisonin were detected, in a rate of 23.20%. Ninety-five patients were identified with moderate or severe arsenic poisoning, accounting for 16.69% of subjects. A positive correlation was found between the detection rates of the skeletal fluorosis and the arsenism(r = 0.816, P < 0.01), as well as between the detection rate of skeletal fluorosis and fluoride content of coal(r = 0.775, P < 0.05). The detection rate of arsenism and arsenic content of coal also had close relationship (r = 0.761, P < 0.05). The detection rate of skeletal fluorosis in the group aged 40 - ,50 - , and 60 - [27.20%(34/125) ,29.27%(36/123), 28.13%(36/128)] was increased, compared the group of less than 40 years age[7.77%( 15/193), X~2 = 21.969,25.648,23.856,P<0.01].For the detection rate of arsenism,male[33.67%(99/294)]was obviously higher than female[12.00%(33/275),)(X~2=37.162,P<0.01].Conclusions A high detection rate of fhorosis is correlated with arsenic poisoning,but the probability of the two diseases simultaneously occurred in a person is not high.In this polluted area.when fluoride accumulates to a certain level as in aduh,the detection rates no longer varies obviously;however,that of arsenism increases along with the age.

Objective To know the condition and feature of water-born endemic arsenism in Shaanxi province, and to provide scientific evidences for prevention and treatment of the disease. Methods In 2009, 8 villages of Duhe, Miaogou, Sanhe, Caiyuan in Shanyang county and Shuanglong, Guangming, Donghekou in Zhen'an county and Guojiawan in Mian county as monitoring sites from both the found water-born arsenic poisoning areas and potential ones of drinking water arsenic ＞ 0.15 mg/L were selected. The disease conditions of residents who lived for more than six months of continuous residence, were investigated according to "Endemic Arsenism Diagnostic Criteria" (WS/T 211-2001 ) and arsenic level in the drinking water were determined. Results Seven thousand six hundred and ninety-three individuals were investigated and 612 cases of arsenism were diagnosed in the 8 villages, the prevalence rate was 7.96%(612/7693). Mild patients accounted for 33.17%(203/612), moderate patients accounted for 50.16%(307/612), and severe patients accounted for 16.67%(102/612). The detection rate for male was 9.99%(408/4085), for female was 5.65%(204/3608), the former was higher than the latter(x2 = 49.138,P ＜ 0.01 ). The older the age was, the higher the rate was(x2 = 770.708, P ＜ 0.01 ). Main clinical manifestation of the patients was depigmentation and pigmentation in skin. Patients with one symptom accounted for 43.30% (265/612), with two symptoms accounted for 56.70% (347/612). Three hundred and seventy drinking water samples were detected, the median of arsenism content was 0.005 mg/L, ranged 0 - 1.660 mg/L. The over-limit rate of arsenic level in the drinking water were 11.62% (43/370). Conclusion Water-born endemic arsenism is mildly prevailing in Shaanxi province, however, great attention should be given to control and monitoring of the disease.

Objective To investigate the current situation of endemic fluorosis associated with drinking water in Shaanxi province in 2008, providing prevention and control work with scientific evidence. Methods According to data of drinking water endemic fluorosis in Shaanxi, 15 counties in Yulin, Weinan and Xianyang city were divided into mild, moderate and severe diseased areas according to fuoride level in the drinking water or the fluorosis severity, and 12,39,45 endemic fluorosis villages were selected respectively from each area. Dental fluorosis for all the children aged 8 - 12 years old and clinical skeletal fluorosis for the people over the age of 16 were examined. In mild, moderate and severe areas, 30% of the survey villages received X-ray to examine skeletal fuorosis. Five water samples were collected from villages with unimproved water respectively from the east, the west, the south, the north, the middle; if there was less than 5 that could be sampled, then all were collected, moreover 3 peripheral and 1 central water samples were collected from villages with improved water. Also in mild, moderate and severe illness areas, 50% of the surveyed villages were selected; in each village, 30 urine samples of the children aged 8 - 12 were collected, 6 portions in each age group. If Less than 30 children in all the age groups or less than 6 in each age group, all their urine samples were collected to determine fluoride. Results Totally 3652 children aged 8 - 12 years old were examined and 1930 cases of dental fluorosis were diagnosed, the rate was 52.85% and the index was 1.22. The rates in Dinghian, Jingbian and Pucheng village were higher, being 90.43% (170/188) ,82.89%(126/152),80.65% (325/403) respectively. A total of 40 543 adults over the age of 16 were examined and 5935 cases of skeletal fluorosis were diagnosed, in a rate of 14.64%. The rates of the mild, moderate, severe skeletal fluorosis were respectively 9.17%(3717/40 543),4.36%(1769/40 543),1.11%(449/40 543).All 706 adults were taken X-ray films.and 280 cases of positive change were diagnosed,the positive rate was 39.66%. The rates of the mild,moderate,severe change were respectively 17.28%(122/706),17.00%(120/706),5.38%(38/706).All 427 water samples were collected,the fluoride content waS(2.22±1.41)ms/L,and the abnormal rate was 85.01%(363/427).All 1393 portions of urine sample were collected in children and the median of fuoride was 2.37 mg/L Conclusions The endemic fluorosis associated with drinking water is still comparatively serious in Shaanxi.The preventive measures for improving water must be improved.

OBJECTIVETo study the effect of all-trans retinoic acid (ATRA) on U937 cell growth and its mechanism.

METHODSCell cycle was detected by flow cytometry (FCM), expressions of cell cycle associated protein and the p27 related protein were detected by Western blot. The binding of P27 and Skp2 was detected by immunoprecipitation.

RESULTSFCM displayed that ATRA could inhibit the proliferation of U937 cells. At 72 h on 1 micromol/L ATRA treatment, 72% of the cells were arrested at G0/G1 phase. Western blot displayed that ATRA could decrease the expression of cyclin A, up-regulate the expression of p21 and p27, and down-regulate the expression of p27 related proteins Skp2. p27 could bind with Skp2 in U937 cells as detected by immunoprecipitation.

CONCLUSIONATRA may arrest the proliferation of U937 cells through the reduction of Skp2 expression, and finally the induction of the accumulation of p27.

Cell Cycle ; drug effects ; Cell Proliferation ; drug effects ; Cyclin-Dependent Kinase Inhibitor p27 ; metabolism ; Humans ; S-Phase Kinase-Associated Proteins ; metabolism ; Tretinoin ; pharmacology ; U937 Cells

OBJECTIVETo observe the effect of Bawei Xilei powder on CD3, CD4, CD8 T-lymphocytes in peripheral blood and colonic mucosa of rat with ulcerative colitis.

METHODSixty SD rats were randomly divided into 6 groups, normal group, model group, low, middle and high dosage Bawei Xilei powder group, Sulfasalazine group. Ulcerative colitis was induced by immunization with rabbit 's colonic mucous emulsified with completely Freund's adjuvant in all rats. Rats in low, middle and high dosage Bawei Xilei powder group were administered with 0.05, 0.1, 0.2 mg Bawei Xilei powder for 18 days by enema respectively. While rats in Sulfasalazine group were enema administered with 100 mg Sulfasalazine, and the rats in other group were administered with equal volume of saline enema as control. We analyzed expression of CD3, CD4, CD8 T-lymphocytes in peripheral blood by flow cytometry and in colonic mucous by immunohistochemistry.

RESULTIn peripheral blood, compared with normal group, in model group, the increased of CD4 T-lymphocytes and CD4 /CD8 ratio, the reduced of CD8 T-lymphocytes, these results were significant discrepancy (P < 0.01). Compared with model group, after treatment with Bawei Xilei powder, CD8 T-lymphocytes increased, but only high dosage Bawei Xilei powder group had discrepancy (P < 0.05). But low dosage Bawei Xilei powder group, other treatment groups' rats showed CD4/CD8 ratio were reduced significantly (P < 0.05). In colonic mucous, compared with normal group, in model group, Rats showed that expression of CD3, CD4 T-lymphocytes reduced and CD8 T-lymphocytes increased obviously (P < 0.05, P < 0.01). Compared with model group, expression of CD8 T-lymphocytes reduced significantly in all treatment groups (P < 0.05, P < 0.01).

CONCLUSIONBawei Xilei powder may regulate their balance between T-lymphocytes subgroup, consequently relieve inflammatory injury in favor of ulcer reparation and tissue regeneration.

Animals ; CD3 Complex ; metabolism ; CD4 Antigens ; metabolism ; CD8 Antigens ; metabolism ; Colitis, Ulcerative ; immunology ; metabolism ; Colon ; drug effects ; metabolism ; pathology ; Dose-Response Relationship, Drug ; Drugs, Chinese Herbal ; pharmacology ; Gene Expression Regulation ; drug effects ; Powders ; Rats ; T-Lymphocytes ; drug effects ; metabolism

According to the successful experience of studying on crops, this paper introduced the conception of the core collection of medicinal plants, and analyzed the characteristic and the way to construct it. Studies on the core collection would fulfill the management and utilize the germplasm resources conveniently and provide a new idea and a method to study on the germplasm resources of medicinal plants. It is necessary to study on the core collection for the development of the germplasm resources of medicinal plants.
Chromatography, High Pressure Liquid ; Conservation of Natural Resources ; Culture Techniques ; Ecosystem ; Plants, Medicinal ; chemistry ; genetics ; growth & development ; Polymorphism, Genetic ; Sequence Analysis, DNA