Objective To investigate the reason of persisting positive rapid plasma reagin (RPR) in serofast syphilis patients, and to provide reference for clinical treatment and prognosis.Methods A total of 33 serofast patients and 23 healthy controls were enrolled in this study.The percentages and absolute counts of CD3+, CD4+, CD8+ T lymphocytes and natural killer (NK) cells were detected by flow cytometry.The comparison of two groups was analyzed by independent sample t test, and the correlation between change of lymphocyte subgroups and RPR titer in serofast syphilis patients was analyzed by bivariate linear correlation method.Results Compared with healthy controls, the percentages of CD3+, CD8+ T lymphocytes in serofast syphilis group were both increased significantly (75.75±5.76)% vs (68.37±5.80)%, (t=4.69, P<0.01);(27.34±7.02)% vs (24.33±1.95)%, (t=2.34, P=0.025), while both the percentage and absolute count of NK cells were significantly decreased (7.32±4.48)% vs (14.87±6.26)%, (t=5.269, P<0.01);(136.2±83.4)/μL vs (298.8±166.9)/μL, (t=4.311, P<0.01).RPR titer of the patients was negatively correlated with both percentage and absolute count of CD4+ T lymphocytes (r=-0.476 and-0.515, respectively, both P<0.01), and it was positively correlated of CD8+ lymphocytes (r=0.588 and 0.305, P<0.01 and P=0.804).Conclusion The imbalance of immune response of lymphocyte subsets observed in serofast syphilis may explain the RPR titers change.

Objective To investigate the clinical value of the probe melting curve analysis‐based PCR assay for the detection of three types of αT .Methods A total of 149 blood and prenatal archival DNA samples (6 of which were amniotic fluid samples)with three knownαT genes ,which included 63 carriers with Hb CS ,22 cases with Hb QS ,43 individuals with Hb WS and 1 double heter‐ozygote with Hb CS and Hb WS) as well as 20 samples with normalα‐globin gene sequence that had been confirmed by RBD com‐bined with DNA sequencing were selected to test the specificity of probe melting curve analysis by blind analysis .Results The probe melting curve analysis accurately detected 100 of the DNA samples previously characterized by S RBD combined with DNA sequencing .Conclusion Probe melting curve analysis‐based PCR assay for the detection ofαT is featured with rapidity and accuracy and can be applied to clinical and prenatal diagnosis .

Arthritis, Gouty ; therapy ; Humans ; Integrative Medicine ; Medicine, Chinese Traditional

Objective:To prepare and optimize the formula of metoclopramide orally disintegrating tablets, and investigate the in vitro drug dissolution behavior. Methods:The formula was optimized by full-factorial experiment design, the ratio of mannotil to micro-crystalline cellulose ( X1 ) and the amount of disintegrating agent ( X2 ,%) were selected as the independent variables, and the friabili-ty ( Y1 ,%) , disintegration time ( Y2 , s) and metoclopramide dissolution ( Y3 ,%) were used as the dependent variables. The release rate of metoclopramide orally disintegrating tablets in different dissolution media was studied. Results:The optimum formula of meto-clopramide orally disintegrating tablets was as follows:the ratio of mannotil to microcrystalline cellulose was 2. 5∶ 1, and the amount of disintegrating agent was 6. 5%. The dissolution of metoclopramide orally disintegrating tablets in the different dissolution media was o-ver 80%. Conclusion:The formula design is reasonable, the preparation process is feasible and the quality can be controlled.

Usage of reverse genetic techniques in the research area of the fundamental etiology of foot-and-mouth disease virus (FMDV), has resolved the issue about the function of viral gene of FMDV on genomic integer level. At present, a further recognition and apprehension for the molecular etiology of FMDV based on the development in reverse genetics was made. Combined with the research work in our labs, we reviewed international advances about the molecular pathogenic mechanism, the relationship be-tween virulence and variation in the genomes, influencing factors for the viral replication, and the develop-ment of new-type gene vaccine of FMD in this article, and propose the potential research aspects in reverse genetics of FMDV in the future.

Adult ; Bone Marrow Transplantation ; Fractures, Ununited ; therapy ; Humans ; Male ; Transplantation, Autologous

There are similarities between magnetotactic bacteria and Acidithiobacillus ferrooxidans (A. ferrooxidans) which isolated from Acid mine drainage(AMD). The weak magnetotaxis of some bioleaching bacteria isolated were found by microscope. A magnetophoresis apparatus was designed based on these weak magnetotaxis and be used to analysis the movement of these strains. The physiological properties of the anear magnetic field strain and removed magnetic field strain which isolated successfully by magnetophoresis apparatus have large difference. The nanometer magnetic particles was extract from the Acidithiobacillus ferrooxidans which purified by spread plate method from AMFS and its main elements are Fe and O by energy spectrum analysis. The results show that A. ferrooxidans have weak magnetotaxis and can be isolated by magnetophoresis. With the development of this new isolating method, the research of magnetotactic bacteria and bioleaching will get more benefit from it.

Hemorrhoids ; Humans ; Male ; Mucous Membrane

OBJECTIVETo study the effects of musk ketone at different concentrations on in vivo migration of exogenous rat bone marrow mesenchymal stem cells (rBMSCs), thus screening out the optimal therapeutic dose.

METHODSForty SD rats were randomly divided into 4 groups, 10 in each group. The rat model of skull defect was established using dental surgery. The primary rBMSCs were cultured by adherence screening method. The third passage cells were labeled by 10 micromol/L BrdU, and the labeled cells were injected into skull defect rats from the tail vein. Rats were administered with musk ketone at high, moderate and low concentration, respectively by gastrogavage, while equal volume of normal saline was administered to those in the blank control group by gastrogavage. Their skulls were taken out 14 days later, fixed, and decalcified. BrdU positive cells were counted under fluorescence microscope.

RESULTSAfter immunohistochemical processing, the gray scale analysis was preformed. There was statistical difference in the BrdU positive cell number between the blank control group and the low and moderate concentration musk ketone groups (P < 0.01). There was no statistical difference in the BrdU positive cell number between the blank control group and the high concentration musk ketone group (P > 0.05).

CONCLUSIONMusk ketone could accelerate the in vivo migration of exogenous stem cells, with the optimal effects obtained at moderate and low concentrations.

Animals ; Bone Marrow Cells ; cytology ; Bone Marrow Transplantation ; Cell Movement ; drug effects ; Cells, Cultured ; Female ; Male ; Mesenchymal Stem Cell Transplantation ; Mesenchymal Stromal Cells ; cytology ; Rats ; Rats, Sprague-Dawley ; Xylenes ; administration & dosage ; pharmacology

Objective To find out the current thyroid volume of school children and its influencing factors in Chongqing.Methods Probability sampling method(PPS) was used to select 30 counties in Chongqing in 2011.Forty children aged 8-10of 1 randomly selected school from every county chosen were enrolled in the study.Thyroid volume of children was examined by B-ultrasonograghy.Body height and body weight were measured.The relationship between gender,age,height and weight and thyroid volume was analyzed,respectively.Results One thousand three hundred and twenty-two children aged 8-10 were investigated.The median of thyroid volume was 3.53 ml.The goiter rate was 5.52％ (73/1322).Thyroid volume of female and male was 3.55 and 3.51 ml,respectively.There was no significant difference of thyroid volume between female and male (H =0.68,P ＞ 0.05).Thyroid volume of children aged 8,9 and 10 was 3.30,3.53 and 3.76 ml,respectively.There was a significant difference of thyroid volume among different age groups(H =52.49,P ＜ 0.01).Thyroid volume of children height (110-,120-,130-and ≥140 cm,respectively) was 2.96,3.22,3.59 and 4.13 ml.There was a significant difference of thyroid volume among different height groups (H =149.23,P ＜ 0.01).Thyroid volume of children weight(17-,20-,30-and ≥40 kg,respectively) was 2.71,3.31,3.91 and 4.74 ml.There was a significant difference of thyroid volume among different weight groups(H =138.44,P ＜ 0.01).For the coefficients of simple and partial correlation,there was a significant correlation between thyroid volume and age,height and weight (P ＜ 0.05).The Spearman coefficient was 0.2411,0.3950 and 0.4285,respectively.The partial correlation coefficient was 0.0640,0.1154 and 0.2319,respectively.The standard partial coefficient of age,height and weight was 0.640,0.1154 and 0.3410,respectively.The proportion of the standard partial coefficients was 1 ∶ 1.8 ∶ 5.3.The function of body weight to thyroid volume was 5.3 times that of age and 3.0 times that of body height.Conclusions The goiter rate of schoolchildren in Chongqing is relatively high.Thyroid volume is affected by age,body height and body weight.The relationship between thyroid volume and iodine nutrition needs further study.