AIM: To investigate the effects of ?-mercaptoethanol (?-ME) and all-trans rentinal acid (RA) on glial fibrillary acidic protein (GFAP) expression in mesenchymal cells derived from mouse fetal liver in vitro. METHODS: Cells suspension from 14.5-days-old mouse fetal liver were cultured in DMEM/HEPES/F12 supplemented with 20% FCS and mesenchymal cells were acquired after discarding nonadherent cells. The 5th passage cells were induced by ?-ME and RA. The characteristics of treated cells were assayed by immunocytochemistry staining at 5 hours and 5 days after induction. ?-actin as an internal control, GFAP gene expression of mesenchyal cells was detected with semi-quantitative RT-PCR. RESULTS: After being inducted by ?-ME and RA, 80% approximately of the cells exhibited typical neural morphology and about 85% expressed GFAP phenotype. Semi-quantitative RT-PCR showed that mRNA expression of GFAP increased in treated cells versus untreated cells (P

Objective To investigate clinical application of critical value of platelet count and its threshold adjustment . Methods Theincidence rate and regularities of distribution of critical value of platelet count were retrospectively analyzed in pa‐tients ,whose platelet count was ≤50 × 109/L from Jan .2012 to Dec .2013 .And the suitable critical values of platelet count for dif‐ferent clinic units were set through clinical coordination .Results The platelet count were detected in 193 776 samples ,and detection results of 1 602 samples reached the critical value of platelet count (detection rate was 0 .83% ) .The critical value of platelet for he‐matology unit was adjusted to ≤10 × 109/L ,for surgical unit was adjusted to ≤50 × 109/L ,and for other units the critical value was still ≤20 × 109/L .Meanwhile ,cases were regarded as reaching the critical value when detection results of platelet count were differ by 50% in short time .Conclusion The adjustment of critical value of platelet count for different units could improve efficiency of clinic and laboratory ,and enhance safety of patients .

BACKGROUND:Nowadays treatment of osteoarthritis with drugs is not ideal. In recent years, more and more scientists try to use stem cells to treat osteoarthritis.
OBJECTIVE:To explore the stem celltreatment for osteoarthritis in order to promote its clinical application and find out its difficulties.
METHODS:A computer-based online search of PubMed database and CNKI database between March 1998 and October 2013 was performed to search related articles with the key words of“stem cell, osteoarthritis, bone metabolism, bone marrow mesenchymal stem cells”in English or in Chinese, respectively. The word“AND”was used for the connection between the word retrieval. Literatures related to stem cells treatment for osteoarthritis were selected;in the same field, the articles published lately in authoritative journals were preferred.
RESULTS AND CONCLUSION:A total of 79 literatures were primarily selected, and 50 documents were involved for summary according to inclusion criteria. The stem celltreatment for osteoarthritis is realized mainly by promoting the repair of cartilage tissue. Commonly used methods are stem celltransplantation and induced differentiation of stem cells. Stem celltreatment has broad application prospects for the treatment of osteoarthritis.

The monosialic acid ganglioside GM1 is rich in brain, which participates in the development process of the nerve system and plays wide neuroprotective roles. This article reviews recent reports about six neuroprotective mechanisms including: activating tyrosine kinase receptor——Trk receptor, modulating Ca 2+ homeostasis in cells, reducing the deposition of A? and its toxic roles in brain, inhibiting the production of reactive oxygen species, enhancing the activity of Na+,K+-ATPase.

[Objective]To observe the effect of Chinese herbs for activating blood stasis on the shape and function of the endothelial cells in rat aorta.[Method]Rat models of PCOS have been established according to Poresky,randomized into animal model and Chinese medicine group(TCM group),normal rats were control group.Measure the serum level of FSH,LH,T,INS and plasma ET PAI-1,and observe the endothelial cell morph.[Results] In the model group,the endothelia cells of the aorta were contracted,with discontinuous basement membrane,inflated chondriosome,the middle layer smooth muscles tending to move inside and out of the normal shape of intraendothelial junction.In the TCM group,the endothelial cells appeared flat,arranging along the long axis of the blood vessels,normal endothelial cell integrity with scanty cytoplasm and the microscopic appearance shows highly developed golgiosome rough endoplasmic reticulum and smooth endoplasmic reticulum.The model group had a more increased serum level of PAI-I and ET than those of the control group,and showed the significant difference(P0.05).The TCM group had more decreased level of ET than those of the normal group(P

Objective To observe the clinical effect of recombinant human growth hormone(rhGH) in the treatment of Turner syndrome(TS).Methods The clinical data of 40 children with TS who were treated with rhGH were retrospectively analyzed.Results After treatment for 6 months,the GV,IGF-1 levels [(9.4 ± 2.7) cm/a,(433.9 ± 164.9)μg/L] were significantly higher than those before treatment [(2.5 ± 0.4)cm/a,(186.7 ± 7.33) μg/L],the differences were statistically significant(t =45.562 5,5.061 0,all P ＜ 0.05).The treatment dose of rhGH,initial treatment age had no significant relationship with GV,the GH peak before treatment had no significant correlation with GV.There was no obvious adverse reactions in the treatment process.Conclusion For children with TS,rhGH can improve the height,improve the therapeutic effect,reduce the burden of family and society.Low dose of rhGH in the treatment of TS can achieve better curative effect,the initial treatment age and growth rate in children had no obvious relationship,the insulin growth factor is an important index during the treatment,and the changes of insulin growth should be closely monitored,and adjusting the dosage of the drug in order to achieve the best therapeutic effect.

Objective To study the effect of growth hormone on serum levels of Ghrelin, leptin(LP), insulin like growth factor-1(IGF-1) and insulin-like growth factor binding protein 3(IGFBP3) in children with idiopathic short stature(ISS).Methods 86 patients of ISS who received therapy from September 2013 to September 2015 were selected.According to random number table,those patients were divided into observation group ( n=43) and the control group (n=43).Control group was treated with routine nutrition therapy, while the observation group was added with recombinant human growth hormone.The Ghrelin, LP, IGF-1, IGFBP3 levels and height pre-and post-treatment were compared.Results After treatment, the level of Ghrelin in observation group [ ( 4.85 ±0.41 ) ng/mL ] was lower than that of control group [ ( 5.63 ±0.62 ) ng/mL ] , the level of LP [ ( 6.53 ± 0.78)mg/L] was higher than that of control group[(5.49 ±0.62)mg/L](all P<0.05); the levels of IGF-1[(387.94 ±47.38)ng/mL] and IGFBP3 [(6.74 ±0.73)μg/mL]in the observation group were higher than that of the control group[(243.54 ±36.82)ng/mL,(4.85 ±0.61)μg/mL](all P<0.05); the height in the observation group[(110.17 ±8.12)cm] was higher than that of control group[(114.58 ±9.40)cm](P<0.05).Conclusion Recombinant human growth hormone is well for ISS, which can effectively improve Ghrelin, LP, promote physical growth IGF-1, IGFBP3 levels, promote growth.

0.05.GFA protein was also detected in skeletal muscle of neonatal and adult mouse by Western blot.The results indicate that the mucsle of adult mouse has the potential to differentiate into glial cells.

Objective To discuss the characteristics of pulmonary function in children patients with positive bronchodilating response using impulse oscillation system(IOS) and provide the evidence for clinical diagnosis and performing IOS.Methods Seventy children patients with bronchodilating response using IOS were recruited randomly for this study.Forty children patients with positive bronchodilating response were regarded as positive group and the other thirty children patients with negative bronchodilating response were regarded as negative group.The IOS parameters,for example,total respiratory impedance (Z5),respiratory resistance at 5 Hz(R5),reactance at 5 Hz(X5),peripheral respiratory resistance(Rp) in the two groups were analyzed.Results Z5,R5,X5 of the positive group [(123.45 ± 24.75)％,(120.09 ± 25.40)％,(138.62 ± 33.48)％] were higher than those of the negative group [(103.89 ± 16.30)％,(102.67 ± 18.16)％,(111.85 ± 14.93)％].There were significantly different between the two groups (P ＜ 0.05).Moreover,Rp ≥ 19.89 cmH2O/ (L·s)(1 cmH2O =0.098 kPa) in the positive group was 50.00％(20/40),which was higher than that in the negative group[23.33％(7/30)].There was significant difference between the two groups(P＜ 0.05).Conclusions The impedance of children patients with positive bronchodilating response using IOS is significantly increased,especially X5.When IOS parameters ≥ 100％,especially X5 ≥ 100％,which suggest that perform the bronchodilation test in order to decrease the rate of missed diagnosis of asthma.

Objective To evaluate the clinical application value of the HC-900 fully automated urine dry chemistry analyzer and its matched test strip (HC-900 analysis system) for detecting urine microalbumin (U-mAlb) .Methods 660 urine samples were collected with the negative urine protein detected by the HC-900 analysis system as the standard ,among them ,159 samples with positive U-mAlb screened by the test strip and 106 samples with the partial negative were performed the quantitative analysis by the Immage 800 fully automatic specific protein analyzer for verifying the results screened by the HC-900 analysis system .The compari-son of the U-mAlb quantitative detection results between the screening positive group and the screening negative group adopted the two samples rank sum test .The comparison between the enumeration data was carried out by Kappa test for consistency .Results Among 660 samples ,159 samples with positive U-mAlb were quantitatively detected by the Immage 800 analyzer and 101 samples were confirmed positive U-mAlb with the real positive rate of 63 .5% .Among 106 samples of negative U-mAlb randomly extracted by the HC-900 analysis system ,9 samples were confirmed to be positive U-mAlb quantitatively detected by the Immage 800 analy-zer .By the consistency test ,the difference between the two methods had statistical significance (Kappa=0 .495 ,P<0 .01) .The U-mAlb level was 18 .02(8 .23-34 .89)mg/L in the screening positive group ,which was significantly higher than 4 .78(2 .51-8 .46) mg/L in the screening negative group ,the difference had statistical significance (Z= -8 .689 ,P<0 .01) .Relative to the detection by the Immage 800 quantitative analyzer ,the sensitivity and specificity of the U-mAlb for the rapid screening by the dry chemistry method was 91 .8% (101/110) and 62 .5% (97/155) respectively .Conclusion The HC-900 analysis system for screening U-mAlb has a certain clinical application value .