1.Technical improvement in rapid sectioning of paraffin-embedded tissue blocks.
Xiao-ping ZHENG ; Wen-xing XU ; Li-kang LUO ; Yan-fei XU
Chinese Journal of Pathology 2009;38(1):57-58
Humans
;
Leiomyoma
;
pathology
;
Microtomy
;
methods
;
Microwaves
;
Paraffin Embedding
;
methods
;
Specimen Handling
;
methods
;
Thyroid Neoplasms
;
pathology
2.Professor GAO Yuchun's experience of acupuncture for headache.
Linhua CUI ; Xiao XING ; Weihua XUE ; Yanjun WANG ; Cejun XU ; Jun XUC ; Yuchun GAO ; Suobin KANG
Chinese Acupuncture & Moxibustion 2015;35(12):1285-1287
As one of the important founders of GAO's acupuncture academic school in YanZhao area, Professor GAO Yuchun 's experience of acupuncture for headache is summarized in this paper. In the opinion of Professor GAO, the treatment of headache should focus on eliminating evil and relieving pain, and the syndrome differentiation should be based on meridian differentiation, especially on three yang meridians of foot as well as liver meridian and kidney meridian. In the acupoint prescription, attention should be placed on strengthening the spleen and stomach. The midnight-midday ebb flow acupuncture is advocated. The combination between acupuncture order and movement of qi is emphasized. In the manipulation, the role of pressing hand, the stimulation during reinforcing and reducing methods, and needle-retention time are important. The breathing reinforcing and reducing method of acupuncture are also advocated.
Acupuncture Points
;
Acupuncture Therapy
;
methods
;
Female
;
Headache
;
therapy
;
Humans
;
Meridians
;
Middle Aged
3.Changes of Natural Killer Cells and T Lymphocyte Subpopulations in Neonates with Hypoxic-Ischemic Encephalopathy and Its Correlation Factors
xiao-yan, ZHANG ; li-xing, LIN ; jie, WANG ; xi-guang, KANG
Journal of Applied Clinical Pediatrics 2006;0(14):-
Objective To investigate the changes and correlative factors of natural killer(NK)cells and T lymphocyte subpopulations levels in neonates with hypoxic-ischemic encephalopathy(HIE).Methods Peripheral blood samples were collected from 50 neonates with HIE.The percentages of NK cell(CD3~-CD_(16)~+CD_(56)~+) and T lymphocyte subpopulations including CD3~+,CD4~+,CD8~+ and CD4~+/CD8~+ ratio were determined by Flow Cytometr(FCM).Meanwhile,20 healthy neonates were served as controls.Results (Le)-vels of NK cell,CD3~+,CD4~+,CD8~+ and CD4~+/CD8~+ ratio in neonates with HIE were significantly lower than those in control group(all P0.05).Spearman correlation analysis showed that there were negative correlation between the NK cell,CD3~+,CD4~+,CD4~+/CD8~+ ratio and stages of HIE(all P0.05). Linearregression analysis showed that there was a positive correlation between NK cell and gestationalages((P
4.Identification and renaming of one strain used for tracheitis vaccine production
Jichun SHI ; Huijing DU ; Li LIANG ; Kang LI ; Xiao XU ; Yuhua XING ; Cuiping CHENG ; Qiang YE
Chinese Journal of Microbiology and Immunology 2016;36(6):448-452
Objective To identify and rename one strain stored in National Center for Medicine Culture Collections ( CMCC) and used for tracheitis vaccine production. Methods The test strain CMCC (B)29108 and the type strain DSM30007T were cultured on NA medium. Characteristics in morphology, physiology, biochemistry and fatty acid profile were compared between the two strains. Phylogenetic analysis was based on 16S rRNA and rpoB gene sequences, together with the DNA-DNA hybridization assay. Results A Comparative analysis of a partial sequence of the 16S rRNA gene sequence revealed that the CMCC( B) 29108 strain was closed to the Acinetobacter species and showed the highest similarity with the type strain Acinetobacter baumannii DSM30007T. Moreover, the CMCC(B)29108 strain was highly similar to type strain DSM30007T in morphology, physiology, biochemistry and fatty acid profile. On the phylogenetic tree based on 16S rRNA and rpoB gene of all Acinetobacter members, the CMCC(B)29108 strain steadily clustered into one independent branch only with the DSM30007 T strain with a DNA-DNA hybridization value of 100%. Conclusion The CMCC(B)29108 strain that is one of the strains used for the production of tracheitis vac-cine should be assigned to the species of Acinetobacter baumannii based on its phenotypic, phylogenetic and chemotaxonomic characteristics.
5.Effects of baicalin and other Chinese herbal monomer on androgen receptor mRNA expression in SZ95 sebocytes.
Qiang JU ; Xing-Ping YIN ; Ji-Hai SHI ; Xiao-Jing KANG ; Yan XIN ; Long-Qing XIA
Acta Academiae Medicinae Sinicae 2007;29(2):167-170
OBJECTIVETo determine the effects of Chinese herbal monomers such as baicalin, berberine, and matrine on the androgen receptor (AR) mRNA expression in SZ95 sebocytes in vitro and to explore the possible mechanism of using traditional Chinese medicines to treat acne.
METHODSSZ95 sebocytes were cultured and then treated with berberine, baicalin, matrine, and 13-cis-retinoic acid for 24 hours. Reverse transcription polymerase chain reaction was applied to detect the changes of AR.
RESULTAR mRNA was downregulated by 13-cis-retinoic acid of 1 x 10(-5) mol/L and 1 x 10(-6) mol/L, and by baicalin of 1 x 10(-4) mol/L (P < 0.05).
CONCLUSION13-cis-retinoic acid and baicalin may exert antiandrogenitic action by inhibiting AR mRNA expression in human sebocytes.
Androgen Antagonists ; pharmacology ; Cell Line ; Down-Regulation ; Drugs, Chinese Herbal ; pharmacology ; Flavonoids ; pharmacology ; Humans ; RNA, Messenger ; biosynthesis ; Receptors, Androgen ; biosynthesis ; genetics ; Skin ; cytology
7.Study on ribotyping of Lyme borreliosis spirochete in Guizhou province.
Ding-ming WANG ; Qin HAO ; Xing-he CAI ; Kang-lin WAN ; Zhao-xiao WANG ; Jian CHEN
Chinese Journal of Epidemiology 2003;24(12):1129-1131
OBJECTIVETo define the main genotypes in Guizhou agricultural areas by molecular epidemiologic investigation of 21 Borrelia burgdorferi sensu lato of Lyme disease spirochetes and to provide the scientific bases for formulating a preventive policy.
METHODSPolymerase chain reaction (PCR) technique was used to amplify the 23S(rrl)-5S(rrf) intergenic spacer, and amplified products were analyzed by restriction fragment length polymorphism (RFLP) and nucleotide sequencing.
RESULTSThere were two genospecies in the strains: 20 strains belong to Borrelia valaisiana, 1 strain is Borelia sp.
CONCLUSIONBorrelia valaisiana was the main genotype in Guizhou agricultural areas. The harmness of B. valaisiana to human being has been confirmed. In order to efficiently prevent the harmness of agent to the people in Guizhou agriculture areas, we should study the risk further.
Base Sequence ; Borrelia burgdorferi ; classification ; genetics ; China ; DNA, Bacterial ; chemistry ; genetics ; DNA, Ribosomal Spacer ; genetics ; Humans ; Lyme Disease ; microbiology ; Molecular Sequence Data ; Polymerase Chain Reaction ; Polymorphism, Restriction Fragment Length ; RNA, Ribosomal, 23S ; genetics ; RNA, Ribosomal, 5S ; genetics ; Ribotyping ; Sequence Analysis, DNA
8.Alteration of mi-RNA expression profile after interferon treatment in HCV-infected Huh7.5.1 cells.
Yan LU ; Xiao-kang XING ; Guang-zhong SONG ; Zhi CHEN
Journal of Zhejiang University. Medical sciences 2011;40(6):598-602
OBJECTIVETo screen the mi-RNA expression profile after interferon treatment in cells infected with hepatitis C virus (HCV).
METHODSHuh-7.5.1 cells was infected with HCV by in vitro transcription and cultured with interferon. The mi-RNA microarray was used to measure the mi-RNA expression in the control group, HCV transcription group and interference group. Intra-group differences were analyzed by the 2 ((-delt delt CT)) method.
RESULTSWith mi-RNA expressed in normal Huh-7.5.1 cells as a benchmark, expressions of 13 kinds of mi-RNAs were up-regulated after HCV infection and then down-regulated following interferon treatment; 7 were down-regulated after HCV infection and then up-regulated following interferon treatment.
CONCLUSIONmi-RNA10a, mi-RNA21, mi-RNA149, mi-RNA152 and mi-RNA210 may be related to hepatitis C virus replication and transcription.
Cell Line, Tumor ; Gene Expression Profiling ; Hepacivirus ; genetics ; Humans ; Interferon-alpha ; pharmacology ; Interferons ; pharmacology ; MicroRNAs ; drug effects ; genetics ; RNA, Viral ; genetics ; Transfection
9.Inhibition of hepatitis C virus replication by small interfering RNA in cells infected by HCV.
Xiao-kang XING ; Ji-liang HE ; Zhi CHEN
Journal of Zhejiang University. Medical sciences 2011;40(6):582-587
OBJECTIVETo investigate the inhibitive effects of small interfering RNA (siRNA) on hepatitis C virus (HCV) replication in cells infected by HCV in vitro.
METHODSThe HCV RNA transcripts prepared by pFL-JC1 were transfected into Huh-7.5.1 cells. Na ve Huh-7.5.1 cells were incubated with the supernatants of transfected cells and the expression of HCV core protein in infected cells was detected by indirect immunofluorescence. The infected cells were transfected with 4, 40 and 200 nmol/L of NS5B siRNA for 24 h, 48 h and 72 h, respectively. The normal Huh-7.5.1 cells were transfected with 4, 40 and 200 nmol/L of NS5B siRNA. Group of blank, lipofectamine 2000, unrelated siRNA and IFNα-2b (1000 IU/ml) served as controls. The HCV RNA and PKR mRNA levels were examined by quantitative RT-PCR.
RESULTSThe HCV core protein in HCV infected cells was detected. Compared with control groups, the HCV RNA levels in infected cells significantly decreased when transfected with 40 and 200 nmol/L of siRNA for 24 h; 4, 40 and 200 nmol/L of siRNA for 48 h and 72 h (P<0.05). The HCV RNA levels in infected cells treated with IFNα-2b (1000 IU/ml) for 24 h, 48 h and 72 h were significantly lower than those in control groups (P<0.05 or P<0.01). The PKR mRNA levels in Huh-7.5.1 cells transfected with siRNA of three concentrations did not have significant difference, as compared with control groups (P>0.05).
CONCLUSIONsiRNA against HCV NS5B region can effectively inhibit HCV replication in HCV infected cells, but can not activate the dsRNA-dependent protein kinase (PKR).
Cell Line, Tumor ; Hepacivirus ; drug effects ; genetics ; physiology ; Humans ; RNA, Small Interfering ; pharmacology ; Transfection ; Viral Nonstructural Proteins ; genetics ; Virus Replication ; drug effects
10.Levels of hemoglobin concentration and anemia during pregnancy in Lhasa
Yuan XING ; Hong YAN ; Shao-Nong DANG ; Bianbazhuoma ; Yi-Jun KANG ; Xiao-Yan ZHOU
Chinese Journal of Epidemiology 2008;29(7):668-671
Objective To investigate the distribution of hemoglobin(Hb)and prevalence of anemia in pregnant women living in the Tibetan Plateau area.Methods Random sampling method was used and fingertip blood sample was tested.Related sociodemographic information was collected.We adjusted the hemoglobin measurements based on the different levles of altitude,using three different methods from CDC.Dirren's and Dallman's to estimate the prevalence rates of anemia.Results Three hundred and eighty pregnant women were included.The mean Hb was 127.6 g/L.Tibetan had a lower Hb (126.6 g/L)than people from other ethnicities(134.6 g/L)with rural pregnant women having a higher Hb(130.4 g/L)than that of urban ones(125.9 g/L).After controlling the gestational age,results remained the same.Different method used for correction of hemoglobin would cause different prevalence rates of anemia which were all higher than the pre-adjusted prevalence rates:70.0% for CDC method,77.9% for Dirren's method and 41.3% for Dallman's method respectively.After analyzing the erythrocyte arameters,we could not conclude that population in our study was under the early stage of the iron deficiency anemia.Conclusion Higher altitude could affect the levels of hemoglobin concentration significantly.Currently adopted hemoglobin correction methods might not be suitable for Tibetan pregnant women.We suggested that it was imperative to establish a relationship between altitude and hemoglobin of Tibetan women during pregnancy in order to correctly evaluate the prevalence of anemia.