1-Alkyl-2-acetylglycerophosphocholine Esterase ; blood ; genetics ; Adolescent ; Asthma ; blood ; enzymology ; genetics ; Child ; Child, Preschool ; Female ; Gene Expression Regulation, Enzymologic ; Genotype ; Humans ; Infant ; Male ; Mutation ; Polymerase Chain Reaction

Objective To investigate the effect of high iodine traditional Chinese medicine in the treatment of subclinical hypothyroidism in serum VB12,Hcy and thyroid function.Methods 84 patients of subclinical hypothyroidism from August 2014 to May 2016 in our hospital randomly divided into two groups,the control group of 42 cases were treated with levothyroxine sodium tablets treatment,42 cases in the experimental group received more with high iodine traditional Chinese medicine.The changes of serum VB12,Hcy and thyroid function were observed before and after treatment in two groups. Results Compared with before treatment, levels of blood lipid,Hcy and TSH in two groups significantly decreased,levels of VB12 increased(P<0.05);compared with the control group after treatment,levels of blood lipid,Hcy and TSH in experimental group were significantly lower than the control group, the level of VB12 was higher than the control group,the differences were statistically significant (P <0.05).Conclusion High iodine can effectively reduce blood lipids in patients with subclinical hypothyroidism,levels of Hcy and TSH in pregnancy,increased the levels of VB12,which has good clinical curative effect.

Semisupervisedmakesfulluseoflargeamountsofunlabeledsamplestomakeuptheinsufficiency of labeled samples. Since it is difficult to obtain a large number of accurate labeled samples and it is a good way for modeling by using a small amount of labeled samples or a large number of inaccurate samples, we proposed a new method named as semi-supervised partial least squares ( SS-PLS) to optimize model based on semi supervised learning. We used 211 samples of tobacco near infrared spectrum and sensory evaluation for modeling and used SS-PLS method to optimize tobacco sensory evaluation model. In the optimized model, the coefficient of determination ( R2 ) can reach up to 90%, the ratio of performance to deviation ( RPD) can reach up to 3 . 0 , and the standard error of cross validation and the standard error of prediction ( SECV and SEP) are below 1. 0. We divided the original sensory evaluation and SS-PLS optimized data into three grades of excellent, medium and poor in accordance with the fixed threshold, the result using projection model of based on principal component and Fisher criterion ( PPF ) shows that the classification of SS-PLS optimized data is better than the original sensory evaluation data. The SS-PLS method can solve the data representation problem of using small sample set for modeling and provides a new chemometrics method for near infrared spectroscopy modeling in case of obtaining a large number of accurately labeled samples is difficult.

Objective Platelet activating factor(PAF),which has been implicated in the pathophysiology of inflammation in asthma,is degraded and inactivated by PAF acetlhydrolase(PAF AH).To investigate the association of PAF AH activity with genotype in asthmatic children.Methods We studied 57 asthmatic children and 30 normal controls. The plasma PAF AH genotype was detected as representative case with 3 different genotypes (Val/Val,Val/Phe and Phe/Phe) by allele specific polymerase chain reaction(AS PCR).The PAF AH activity in plasam was examined by the changes of substrate assay.Results In severe asthmatic individuals plasma PAF AH activities were lower than those of mild or moderate groups and control group,and plasma PAF AH activition was absent 15.4 %.In another three groups plasma PAF AH activation were absent 2 %-3 %.There was significant difference of plasma PAF AH activity among 3 groups of genotype(Val/Val,Val/Phe and Phe/Phe).In the similar genotype, there was no significant difference of plasma PAF AH activity between the groups of control and asthma.Conclusions There was imbalace of PAF/PAF AH in asthmatic children. In severe asthmatic individuals plasma PAF AH activities were lower than those of mild or moderate groups and control group. PAF AH(Val279Phe) gene mutation was related with plasma PAF AH activity.

Objective:To choose the best vector for the expression of CS3 fimbriae. Methods: The CS3 operon was cloned into different plasmid vectors such as pUC19 and pTrc99A. The expression of CS3 was monitored by whole-cell ELISA and SDS-PAGE analysis. The assembly of CS3 fimbriae was detected with electron microscopy. Results:The expression level of CS3 fimbriae using plasmid pUC19 as carrying vector was the highest, and the insertion orientation of CS3 gene into the plasmid has a little effect on its expression level. The expression of CS3 fimbriae was confirmed by SDS-PAGE analysis and electron microscopy.Conclusions:The promotor of CS3 itself played the key role in the expression of CS3 fimbriae and the copy number of plasmid was the main factor to affect the expression level.

Objective To study the influence and dose effect of ultrasound on the contraction of uterine smooth muscle in rats.Methods Estradiol benzoate was injected into rats three days before conducting an in-vitro experiment.Their uteri were resected and irradiated with ultrasound(0.8 MHz,3 W/cm~2,0-40 rain).The contrac- tion frequency and amplitude were recorded using an MS-302 biological experiment system.Results It could be seen that the contraction frequency and amplitude,and general contractile activity were significantly increased during ultrasonic irradiation(P＜0.01).The increased contraction frequency and amplitude lasted for ten minutes,and then the normal contraction pattern resumed.The contraction frequency as well as the percentage change in eontraction fre- quency were highest during the first 15 minutes of ultrasonic irradiation;the contraction amplitude as well as the per- centage change in amplitude were highest during 40 minutes of ultrasonic irradiation.Contraction activity was at its highest for 30 minutes,but the percentage change in activity was highest for 20 minutes.Conclusions Ultrasound can induce uterine smooth muscle contraction in rats.This biological effect is related to the irradiation time.

OBJECTIVETo investigate the spontaneous YMDD mutation rate.

METHODSSerum samples collected from 196 untreated chronic HBV patients were detected by primer-specific real-time PCR.

RESULTSAmong 196 patients, spontaneous YMDD variants were detected in 21 subjects (20 YVDD mutants and 1 YIDD mutant). YMDD variants account for more than 50%, 25% to 50%, 9% to 25% of total virus load in 1, 5 and 15 patients, respectively. Gender, age, HBeAg status, serum viral load, the state of disease and duration of infection were not associated with spontaneous YMDD mutation. Genotype B had higher spontaneous YMDD rate than genotype C (20.00% vs 7.38%, x(2) = 6.28, P < 0.05).

CONCLUSIONSpontaneous YMDD variants exist in chronic hepatitis B patients, Genotype B is associated with higher spontaneous YMDD rate.

Adolescent ; Adult ; Aged ; DNA Primers ; DNA, Viral ; analysis ; blood ; genetics ; Female ; Genotype ; Hepatitis B virus ; genetics ; Hepatitis B, Chronic ; virology ; Humans ; Male ; Middle Aged ; Mutation ; Polymerase Chain Reaction ; methods ; Sensitivity and Specificity ; Viral Load ; Young Adult

Objective To investigate the effect of IL-10 and the methylation of its promoter in acute on chronic liver failure (ACLF). Methods Patients were divided into three groups: 25 with ACLF, 25 with CHB, 10 healthy controls. Respectively detect the serum level of IL-10 via ELISA, and the methylation of 1L-10 promoter via MSP,to analyze the difference among the three groups. Results Both the ACLF group and the CHB group have significant increase in serum level of IL-10 compared with the control group ( P <0.05 ) ; the ACLF group's level is higher than the CHB group, however without statistical significance (P >0.05 ). The serum level of IL-10 in ACLF group has no significant relativity with ALT and HBV-DNA( r = -0. 022, r = 0. 033, respectively; P > 0. 05 ) ; has positive relativity with TBIL and MELD ( r = 0. 566, r =0.443, respectively; P < 0.05); and negative relativity with PTA (r = - 0.581, P < 0.05). The distribution of the methylation of IL-10 promoter in ACLF group is significantly different from the other two.Conclusion The serum level of IL-10 in hepatitis patients is significantly higher and increases with the degree of liver failure. The promoter methylation may be important in the gene inactivation.

OBJECTIVETo compare the sensitivity and practicability of modified Bethesda assay and Nijmegen assay in detecting factor VIII (FVIII) inhibitor.

METHODSModified Bethesda assay and Nijmegen assay were used to screen FVIII inhibitors in 237 patients with hemophilia A. The buffer plus universal coagulation reference plasma (UCRP) was used to establish a standard curve for FVIII: C assay in modified Bethesda method, instead of Nijmegen plasma plus FVIII deficiency plasma in Nijmegen method. The cutoff value for positive FVIII inhibitors is > or = 0.6 BU/ml.

RESULTSThe positive rate of FVIII inhibitors was 5.5% (n = 13) when using modified Bethesda assay and was 8.4% (n = 20) when using Nijmegen assay (P > 0.05).

CONCLUSIONModified standard Bethesda assay is a convenient and feasible method for detecting FVIII inhibitors.

Adolescent ; Adult ; Autoantibodies ; blood ; Blood Coagulation Tests ; methods ; Child ; Child, Preschool ; Factor VIII ; immunology ; Female ; Hemophilia A ; blood ; immunology ; Humans ; Male ; Middle Aged ; Sensitivity and Specificity ; Young Adult