Objective To develop a method for the determination of berberine hydrochloride,palmatine hydrochloride and jatrorrhizine hydrochloride in Yiqi Zhixue Granules. Methods The samples were extracted by ultrasonication with methanol for 30 min,and an ion pair RP-HPLC method was applied to determine three kinds of alkaloids.The column of C18 with temperature at 30 ℃ was used to separate the target components,the mobile phase consisted of the mixed solution of 0.01 mol/L sodium-heptanesulfonate solution and equal volume of 0.01 mol/L potassium dihydrogen phosphate solution(pH being adjusted at 3.1 with phosphoric acid) combined with acetonitrile(70 ∶ 30),the flow rate was 1.0 mL/min,and the detection wavelength was at 345 nm. Results Three kinds of alkaloids were separated perfectly,the average recoveries(n=6)were 100.95 %(RSD=2.10 % ) for berberine chloride,102.14 %(RSD=2.29 % ) for palmatine chloride,and 100.71 %(RSD=2.65 % ) for jatrorrhizine chloride. Conclusion The developed method is demonstrated to be simple,specific and accurate,which can be used to determine the contents of berberine chloride,palmatine chloride and jatrorrhizine chloride in Yiqi Zhixue Granula,and to control the quality of Folium Mahoniae in Yiqi Zhixue Granules.

ObjectiveToinvestigatetheroleofpsoriasininthepathogenesisofpsoriasis.MethodsImmunohistochemicaltechnique(SABC)andflowcytometrywereemployedtodetecttheexpressionofpsoriasinin14patientswithpsoriasis.ResultsTheexpressionofpsoriasinwasup-regulatedinpsoriatickeratinocytesandtheamountofitsexpressionwas23.38%?4.49%.Thepresenceofpsoriasinwaslocatedinthebasalandsuprabasallayersofpsoriaticlesions.Theepidermisinnormalcontrolsdidnotexpresspsoriasin.ConclusionTheoverexpressionofpsoriasininpsoriaticepidermissuggeststhatpsoriasinbeoneofthefactorsleadingtotheinfiltrationofinflammatorycellsinpsoriaticepidermisandberelatedtothehyperproliferationofpsoriatickera-tinocytes.

Objective To determine the gene polymorphism and serum concentration of mannose-binding lectin (MBL) in patients with psoriasis,and to analyze the relationship between MBL and psoriasis.Methods Totally,67 patients with psoriasis vulgaris and 69 healthy human controls were enrolled in this study.Venous blood samples were obtained from all the subjects.Genomic DNA was extracted,and PCR-restriction fragment length polymorphism (PCR-RELP) analysis was conducted to determine the polymorphism at codon 54 of the MBL gene.Enzyme-linked immunosorbent assay was performed to measure the serum level of MBL.A chi-square goodness-of-fit test was carried out to evaluate Hardy-Weinberg equilibrium,t test to compare the serum concentration of MBL,and chi-square test to compare the frequency of genotypes and alleles of MBL gene codon 54.Results The patients with psoriasis showed higher frequency of GGC/GAC heterozygote but lower frequency of GGC/GGC homozygote (x2 =10.36,P ＜ 0.05),together with increased frequency of GAC allele but decreased frequency of GGC allele (x2 =8.31,P ＜ 0.05),at codon 54 of the MBL gene compared with the healthy controls.The variant allele GAC at codon 54 of the MBL gene was markedly associated with psoriasis (OR =3.383,95％ CI 1.585-7.211,P ＜ 0.05).The serum concentration of MBL was (2.193 7 ± 0.816 3) mg/L in patients with psoriasis,significantly lower than that in the healthy controls ((3.269 5±1.205 8) mg/L,t=6.11,P＜ 0.05).Conclusion MBL might be associated with the pathogenesis of psoriasis to some degree.

OBJECTIVETo observe the expressions of Calbindin(CB) and Parvalbumin (PV), the two calcium-binding protein, in auditory pathway in mice of wild type C57BL/6J and kit⁺/kitW⁻ ²Bao, a kit gene mutant.

METHODSSix mutated kit gene kit⁺/kitW⁻ ²Bao mice and 6 wild type C57BL/6J (B6) mice were anaesthetized i. p. with chloral hydrate. After the mice were fixed by heart perfusion, the brains were removed and coronal sections were cut with a freezing microtome.

RESULTSWe found that wild type mice had significant expressions of PV on ventral cochlear nucleus, anterior part (AVCN), ventral cochlear nucleus, posterior part (PVCN), inferior colliculus (IC) and auditory cortex (AC). CB was expressed in wild type mice on PVCN and nucleus of the trapezoid body (Tz). The mutant of kit gene induced the less expression of PV on PVCN, IC and AC (P < 0.01), but increased the expression of Tz (P < 0.01). CB could not be observed on PVCN in mutant mice, and the expression of AC was increased( P < 0.01).

CONCLUSIONCB and PV has differential expression level in auditory pathway. Since mutated kit gene can affect expression of PV on PVCN, IC, Tz and AC, as well as CB on PVCN and AC, it suggests that the mutation of kit gene can affect the advanced function of central nervous system in auditory pathway.

Animals ; Auditory Cortex ; metabolism ; Auditory Pathways ; metabolism ; Calbindins ; metabolism ; Inferior Colliculi ; metabolism ; Mice ; Mice, Inbred C57BL ; Mutation ; Parvalbumins ; metabolism ; Pons ; metabolism ; Proto-Oncogene Proteins c-kit ; genetics

Epidemiological surveys show that folic acid can prevent prostate cancer, but fortified folic acid may increase the risk of the malignancy. The physician data queries from the National Cancer Institute of the USA describe folate as protective against prostate cancer, whereas its synthetic analog, folic acid, is considered to increase prostate cancer risk when taken at levels easily achievable by eating fortified food or taking over-the-counter supplements. We review the current literature to examine the effects of folate and folic acid on prostate cancer, help interpret previous epidemiologic data, and provide a clarification regarding the apparently opposing roles of folate for patients with prostate cancer. A literature search was conducted in Medline to identify studies investigating the effect of nutrition and specifically folate and folic acid on prostate carcinogenesis and progression. In addition, the National Health and Nutrition Examination Survey database was analyzed for the trends in serum folate levels before and after mandatory fortification. Folate likely plays a dual role in prostate carcinogenesis. There remains some conflicting epidemiologic evidence regarding folate and prostate cancer risk. However, there is growing experimental evidence that higher circulating folate levels can contribute to prostate cancer progression. Further research is needed to clarify these complex relationships.
Dietary Supplements ; adverse effects ; Disease Progression ; Folic Acid ; analogs & derivatives ; blood ; pharmacology ; Food, Fortified ; Humans ; Male ; Nutrition Surveys ; Nutritional Status ; Prostatic Neoplasms ; blood ; chemically induced

Objective To explore the consistency of knee articular cartilage defect area by magnetic resonance imaging (MRI)and arthroscopy.Methods Thirty-six patients (36 knees)with knee cartilage lesions were collected in our study.The defect area meas-urement of knee articular cartilage by MRI and arthroscopy was compared.Results A total of 92 lesions were detected by both MRI and arthroscopy with an average of 2.6 defects per knee.Preoperative MRI resultes demonstrated the mean defect area per knee was (1.9±1.5)cm2 ,while arthroscopic measurement after debridement indicated the mean defect area per knee was (2.9±2.6)cm2 , which had significant difference(P <0.001).The area measured by MRI was less than that by arthroscopy,and the mean difference was (1.7 ± 1.1)cm2 .The mean area measured by MRI was 70.1% of that by arthroscopy.Conclusion Arthroscopy and MR have good consistency in the number of articular cartilage defect lesions .MRI can reflect the knee articular cartilage defect area directly or indirectly,and be capable of accurate positioning and qualitative diagnosis.

The research capacity in post-graduate education process is an important content,also an important indicator of educational outcomes.School of Medicine and Health Management of Hangzhou Normal University has done a bold exploration at this area,making the integration and innovation,from the management system to the practical operation,from the school management to the society support.Considering the compound characteristics of Social Medicine and Health Service Management specialty,the school has designed the "ladder" training research capacity programs by playing the school system,teacher roles and social support,and many other forces,in order to ensure and enhance the research capability of post-graduates.

Objective To evaluate the significance of fiberoptic bronchoscopic brush cytology in the diagnosis and histological classification of lung carcinoma.Methods Data of 309 patients with lung carcinoma were retrospectively analyzed.Both bronchoscopic cytology and histology diagnosis were available.The positive rate of bronchoscopic cytology and tissue biopsy were calculated respectively.The classification accuracy of cytological diagnosis for lung carcinoma was evaluated.In tissue biopsy standard,evaluated the significance of bronchoscopic cytology in diagnosis and histological diagnosis.Results The positive rate of bronchoscopic cytology and tissue biopsy were 86.1％ (266/309) and 83.8％ (259/309),respectively.Bronchoscopic cytology combined with bronchial biopsy could obviously improve the positive rate to 94.2％ (291/309) in lung carcinoma diagnosis.Taking the tissue biopsy histological type as a standard,the cytotyping accuracy for brush method was 85.1％(74/87) in squamous carcinoma,82.4％(108/131) in adenocarcinoma and 100％(11/11) in small cell carcinoma for higher.However,the accuracy in diagnosing poorly differentiated carcinomas was only 12.2％ (5/ 41).Conclusion Fiberoptic bronchoscopic brush cytology plays an stable and important role in diagnosing lung carcinomas and histological type determination.However,it has limited use in diagnosing poorly differentiated carcinomas.

Objective To investigate the expression of mannose-binding lectin (MBL) in lesions of patients with psoriasis vulgaris,and to explore the relationship between MBL and psoriasis pathogenesis.Methods Immunohistochemistry and Western blot were performed to detect the expression of MBL in lesional and normalappearing perilesional skin of 30 patients with progressive psoriasis vulgaris,as well as in normal skin of 30 healthy human controls.Statistical analysis was carried out by t test using SPSS13.0 software.Results Immunohistochemistry showed that MBL was expressed in lesional psoriatic skin,but weakly expressed or absent in normalappearing perilesional skin and normal control skin,with the relative expression level of MBL in lesional skin significantly higher than that in perilesional skin and normal control skin (0.636 7 ± 0.515 1 vs.0.416 3 ± 0.160 1 and 0.381 6 ± 0.310 9,t =2.24,2.32,respectively,both P ＜ 0.05).Western blot revealed a positive expression of MBL protein in all the skin specimens,and the expression intensity of MBL protein in lesional psoriatic skin was significandy increased compared with perilesional psoriatic skin and normal control skin (0.273 1 ± 0.129 4 vs.0.186 3 ± 0.193 1 and 0.149 2 ± 0.268 7,t =2.05,2.28,respectively,both P＜ 0.05).No significant difference was shown in the expression of MBL protein between perilesional psoriatic skin and normal control skin by immunohistochemistry (t =1.51,P ＞ 0.05) or Western blot (t =0.61,P ＞ 0.05).Conclusion There is a high expression of MBL protein in lesions of patients with psoriasis vulgaris,which may be somewhat associated with the pathogenesis of psoriasis.

Objective To study the expression and significance of Ki-67 in gastrointestinal stromal tumors(GIST) with CD117 immunoreactive. Methods The expression of Ki-67 was detected by SP method in 25 cases of high risk GISTS, 18 cases of moderate GISTS and 33 cases of extremely low and low risk GISTS,which were compared with the follow-up results. The relationship between Ki-67 index (LI) and risk degree was analyzed. Results Forty patients with moderate and high risk GIST were followed-up, including 26 alive,12 die of GIST and 2 die of other causes. Compared with patients of extremely low and low risk GIST, Ki-67 LI＞5 % was correlated with moderate and high risk cases (P ＜0.01), meanwhile Ki-67 LI was positively correlated with tumor sizes of ＞5 cm and tumor mitotic cell count ＞5/50 HPF, but was not with locations(P ＞0.05). Conclusion Ki-67 LI＞5 %, tumor size＞5 cm and tumor mitotic cell count＞5/50 HPF are risk indicator for GIST with CD117 immunoreactive.