Objective To investigate the influence of Schizandrain B(Sch B)preconditioning in myocardial cells of neonatal rats with hypoxia/reoxygenation (H/R)inj ury, and to explore its possible mechanism.Methods The cultured myocardial cells were divided into control group, model group and 10, 50, 250 mg · L-1 SchB preconditioning groups.All the cells in various groups except control group were cultured in 2 mmol·L-1 Na2 S2 O4 for 2 h,then cultured in normal medium for 18 h to induce myocardial H/R injury.The morphological changes of myocardial cells in various groups were observed under inverted microscope. The survival rates of the myocardial cells in each group were examined by MTT. The activities of lactic dehydrogenase (LDH ), creatine (CK ), superoxide ismutase(SOD),and the (MDA)levels in the cells in various groupswere examined by detection kits. Results Compared with control group,the cells in model group were retracted,arrest or float,the survival rate was decreased significantly (P<0.01),the activities of LDH,CK and MDA level were increased (P<0.01),and the SOD activity was decreased (P<0.01);compared with model group,the cells in Sch B preconditioning groups remained beating,retraction was light,the cell survival rates were significantly increased (P<0.01),the activities of LDH,CK and MDA levels were decreased (P<0.01),and the SOD activities were increased (P<0.05 or P<0.01).Conclusion Sch B has protective effect on myocardial cells with H/R injury in the neonatal rats,which may be associated with anti-oxidative damage.

Objective To explore the relationship between some single nucleotide polymorphisms (SNP)loci of interferon regulatory factor 6(IRF6)gene,transforming growth faetor-?(TGFA)gene and nonsyndromic cleft lip with or without cleft palate(NSCL/P)in nuclear families consisting of fathers, mothers and affected offspring with NSCL/P from southeast China.Methods Some SNloci of IRF6 and TGFA were detected by applying microarray technology in nuclear families,and then haplotype relative risk (HRR)and transmission disequilibrium test(TDT)were performed.Results There were no significant difference in genotypes and alleles distribution between patients and their parents.The SNP locus——V274I of IRF6 was associated with NSCL/P(HRR:?~2=4.5816,P

Objective To observe whether the expression of interferon-regulatory factor genes are re- lated to systemic lupus erythematosus (SLE).Methods The clinical data of 45 SLE patients and 37 normal controls were collected.Total RNA of peripheral blood was extracted and transcripted into cDNA.Sybr green dye based real-time quantitative PCR method was used to compare the expression (indicated as-??Ct value) of IRFI,IRF4,IRF8 in patients with SLE and those in the controls.Results The levels of IRF1,IRF4 and IRF8 mRNA were-3.90?0.19,-8.04?0.25 and 3.60?0.15 respectively in normal controls.In SLE patients, IRF4 mRNA expression was -8.82?0.18,higher than that in normal (P=0.011).But IRF8 mRNA expression was 3.09?0.13,lower than that in normal (P=0.012).Conclusion Abnormal IRF mRNA expression is found in the peripheral blood of SLE patients.IRFs may play roles in the pathogenesis of SLE by affecting the differen- tiation of Th cells.

Objective To observe the protein and mRNA expression of thyroid-stimulating hormone receptor (TSHR) in mammary gland tissue of lactating rats,and to explore iodine uptake mechanism.Methods Eighty adult Wistar rats (60 female and 20 male),weighting 210-250 g were selected.All female Wistar rats were randomly divided into 6 groups according to their body mass:normal non-pregnant group,lactating for 5-,10-,15-and 20-day groups and weaning for 5 days group,10 rats in each group.All rats were fed with conventional fodder and tap water freely.In addition to the normal non-pregnant group,other five groups of female and male rats were mated at 3 ∶ 1,respectively.Then the rats in all groups were killed on the 5th,10th,15th and 20th day after lactation and on the 5th day after weaning to get the mammary gland tissue.The protein and mRNA expression of TSHR were determined by immunohistochemical staining and real-time quantitative PCR.Results TSHR protein was expressed in mammary acinar and ductal epithelial cytoplasm.The expression of TSHR in mammary gland showed significant differences between groups (x2 =14.612,P ＜ 0.05),the staining intensity of mammary gland tissue in normal non-pregnant rats(weak,n =4; moderate,n =6) was weaker than that of lactating for 5 days(weak,n =2; moderate,n =3; strong,n =5) and 10 days groups(barely detectable,n =1;moderate,n =4; strong,n =5; x2 =4.113,5.250,all P＜ 0.05).The expression of TSHR mRNA in mammary gland showed significant differences between groups(F=20.488,P ＜ 0.05); the expression of TSHR mRNA in lactating for 10 days group(0.31 ± 0.06) was higher than that of lactating for 5 days group(0.22 ± 0.04,P ＜ 0.01),and the expression of lactating for 15 days group (0.16 ± 0.08) was significantly lower than that of lactating for 5 days group (P ＜ 0.05).Conclusions TSHR is widely expressed in mammary gland of lactating rats.The iodine uptake of mammary gland is enhanced in early lactation period when the body may be more susceptible to iodine deficiency,therefore iodine should be supplemented reasonably.

OBJECTIVETo investigate the variation of serum thyroid transcription factor-1 (TTF-1) in different patients and explore its significance in the diagnosis of lung carcinoma.

METHODSDot-enzyme linked immunosorbent assay (dot-ELISA) and Leica Q500 MC image analysis system were used to quantitatively detect TTF-1 protein in the serum samples from normal healthy adults and from patients with benign lung disease, lung cancer, thyroid carcinoma and non-thyroid carcinoma.

RESULTSThe sensitivity, specificity, standardized positive predicative value, standardized negative predicative value, standardized accuracy and standardized wrong diagnostic rate of the method were 90.91%, 82.22%, 83.64%, 90.04%, 86.57% and 13.43%, respectively. The cutoff value of serum TTF-1 in healthy normal adults was 36.39, with a ROC value of 0.95. Serum TTF-1 PU was significantly higher in patients with lung adenocarcinoma, squamous cell lung carcinoma and thyroid carcinoma than in healthy adults and patients with benign lung diseases and non-thyroid carcinoma (P=0.000). Serum TTF-1 PU was similar in lung adenocarcinoma, squamous cell lung carcinoma, small cell lung carcinoma, large cell lung carcinoma and thyroid carcinoma (P=0.744, 0.677, and 0.333, respectively). Serum TTF-1 PU was greater than the PU in the corresponding homogenate of lung adenocarcinoma, squamous cell lung carcinoma, small cell lung carcinoma, large cell lung carcinoma and thyroid carcinoma (P=0.000). Serum and homogenate TTF-1 PU was correlated to TNM stage of lung cancer patients (P=0.000) but not to gender, tumor types, differentiation or lymph node metastasis.

CONCLUSIONSLung adenocarcinoma, squamous cell lung carcinoma and thyroid carcinoma are suspected when serum TTF-1 PU is higher than 36.39. Serum TTF-1 is not helpful in differentiating the types of lung carcinomas and thyroid carcinoma. After exclusion of thyroid carcinoma, detection of serum TTF-1 can be helpful in the diagnosis of lung cancer. In different lung carcinomas and thyroid carcinomas, the serum TTF-1 is higher than the corresponding homogenate TTF-1 level. Serum TTF-1 increases with the progression of TNM stage of lung carcinoma.

Case-Control Studies ; Humans ; Lung Neoplasms ; blood ; classification ; diagnosis ; Nuclear Proteins ; blood ; Predictive Value of Tests ; Sensitivity and Specificity ; Thyroid Nuclear Factor 1 ; Transcription Factors ; blood

The metabolomic analysis of three Cimicifuga species was performed using H-NMR spectroscopy and pattern recognition (PR) techniques. A broad range of metabolites could be detected by 'H-NMR spectroscopy without any chromatographic separation. The analysis using principal component analysis (PCA) and discriminant partial least square (DPLS) of the 1H-NMR spectrum showed a clear discrimination between C. foetida and the other two species. The major metabolites responsible for the discrimination were triterpenoid saponins and saccharides. These results indicated that the combination of 1H-NMR and PR provides a useful tool for chemotaxonomic analysis and authentification of Cimicifuga species, and could used for the quality control of plant materials.
Cimicifuga ; classification ; Discriminant Analysis ; Drugs, Chinese Herbal ; classification ; standards ; Magnetic Resonance Spectroscopy ; methods ; Metabolomics ; methods ; Pattern Recognition, Automated ; Principal Component Analysis ; Protons ; Saponins ; isolation & purification ; Triterpenes ; isolation & purification

The phytase gene phyA(m) from Aspergillus niger N25 was recombined into E. coli expression vector pET-30b(+). Recombined at expression vectors pET30b-FphyA(m) was served as a template to amplify phytase gene, and the PCR product named elongation mutation gene phyA(e) was expanded with a 13 amino acid sequence from pET-30b-FphyA(m) vector at C-terminal of phytase gene phyA(m). Furthermore, phyA(e) gene was recombined into expression vector pPIC9k and expressed in Pichia pastoris. The comparison experiment of mutant phytase PP-NP0 with wild-type phytase PP-NP(m)-8 showed that: the optimum temperature of PP-NPe was increased by 3 degrees C, and its thermostability was increased by 21% when it was exposed to 10 min at 75 degrees C. Its effective reaction pH range with catalysis efficiency above 70% was pH 4.6 - pH 6.6, and wider 0.4 pH value than that of wild-type phytase.
6-Phytase ; biosynthesis ; genetics ; Amino Acid Sequence ; Aspergillus niger ; enzymology ; genetics ; Enzyme Stability ; genetics ; Escherichia coli ; enzymology ; genetics ; Fungal Proteins ; biosynthesis ; genetics ; Hot Temperature ; Molecular Sequence Data ; Mutation

ObjectiveTo study the mRNA expression of rat Insulin-like growth factors- Ⅰ (IGF- Ⅰ ) and Transforming growth factor-β1 (TGF-β1) in thyroid and placenta with different iodine intakes during pregnancy.MethodsOne hundred and fifty female Wistar rats,weighting 80 - 100 g,were randomly divided into five groups according to body weight,30 rats in each group.Each group was given deionized water containing different concentrations of iodine,50 μg/L(control group,NI),0 μg/L(iodine deficiency 1 group,LI1 ),5 μg/L(iodine deficiency 2 group,LI2),3000 μg/L(iodine excess 1 group,HI1 ),and 10 000 μg/L(iodine excess 2 group,HI2),respectively.After feeding for 12 weeks,the female rats were mated with male rats.The female rats were sacrificed at first(6,7 days),trimester( 12,13 days),and third trimesters( 19,20 days),respectively,then their thyroid and placenta were collected.The mRNA expressions of IGF- Ⅰ and TGF-1 in thyroid and placenta were detected by real-time quantitative PCR.Results①The actual thyroid weights of LI1 and LI2 groups[ (12.17 ± 5.41 ) × 10-2 g,(3.54 ± 1.21) × 10-2 g] were significantly higher than that of NI group[ (2.05 ± 0.50) × 10-2 g,all P ＜ 0.05] ;actual weights of HI1 and HI 2 groups[ (1.64 ± 0.27) × 10-2 g,(1.66 ± 0.29) × 10-2 g] were compared with that of NI group,the difference was not statistically significant(all P ＞ 0.05).②The mRNA expression of IGF- Ⅰ: at the first trimester,LI1 and LI2 groups(l.98 ± 0.35,1.47 ± 0.22) were all higher than that of NI group(1.01 ± 0.18,all P＜ 0.01 ),HI1 and HI2 groups(0.68 ± 0.16,0.75 ± 0.09) were lower than that of NI group(all P ＜ 0.01 );at the second trimester,HI2 group( 1.14 ± 0.17) was lower than that of NI group( 1.58 ± 0.33,P ＜ 0.01 ) ; at the third trimester,LI2 and HI2 groups(1.47 ± 0.20,1.45 ± 0.35) were lower than that of NI group(2.20 ± 0.37,all P＜0.01).The mRNA expression of IGF- I level in NI group at the first,second,and third trimesters(1.01 ±0.18,1.58 ±0.33,2.20 ± 0.37) was up regulated gradually,pairwise comparisons were statistically significant(all P ＜ 0,01 ).③The mRNA expression of TGF-β1: at the first trimester,LI1 group (1.37 ± 0.13) was higher than NI group (1.05 ±0.18,P ＜ 0.01 ),HI1 and HI2 groups(0.50 ± 0.09,0.44 ± 0.11) were lower than NI group(all P＜ 0.01); at the second trimester,LI1 and HI2 groups(1.39 ± 0.28,1.17 ± 0.12) were higher than NI group(0.63 ± 0.22,all P ＜0.01 ) ; at the third trimester,LI1 and LI2 groups ( 1.57 ± 0.30,1.23 ± 0.20) were higher than NI group ( 0.68 ± 0.17,all P＜ 0.01).TGF-β1 mRNA expressions of NI group at the second (0.63 ± 0.22) and third trimesters(0.68 ± 0.17) were lower than that of the first trimester (1.05 ± 0.18,all P ＜ 0.01).④ Rats' IGF-Ⅰ mRNA expression in placental: at the second trimester HI1 group,HI2 group( 1.48 ± 0.16,1.45 ± 0.25) were all higher than the NI group ( 1.00 ± 0.10,all P ＜ 0.01 ) ; at third trimester,HI1 group ( 1.75 ± 0.15 ) were higher than the NI group ( 1.54 ± 0.29,P＜ 0.05),HI2 group(l.94 ± 0.31) were higher than the NI group(P ＜ 0.01 ).IGF- Ⅰ mRNA expression in placental of NI group at the third trimester was higher than the second trimester(P＜ 0.01).⑤ Rats' TGF-β1 mRNA expression in the placenta: at the second trimester and the third trimester of pregnancy there were no significant difference between the five groups(all P ＞ 0.05) ; NI group at the third trimester(0.83 ± 0.16) was lower than the second trimester(0.98 ± 0.20,P ＜ 0.05).Conclusions During pregnancy,IGF- I mRNA expression increases in thyroid under the conditions of iodine deficiency,and this effect is particularly significant in the first trimester; at the same time,TGF-β1 mRNA expression is increased,and this inhibition becomes clear with the deepening of iodine deficiency.Under the condition of iodine excess,the functions of IGF- Ⅰ and TGF-β1 in thyroid above-mentioned were relatively weak.With the development of gestational period,promoting tissues growth and differentiation effect of placenta's IGF- Ⅰ was more significant gradually,but,inhibited effect of TGF-β1 was weaken.

Objective To study the effects of different iodine intakes on rat iodine metabolism during pregnancy.Methods One hundred and fifty female Wistar rats (body weight 80-100 g) were randomly divided into five groups:control group(NI),lower iodine 1 and 2 groups(LI1 and LI2),High iodine 1 and 2 groups(HI1 and HI2) by weight,30 rats in each group.These rats were given deionized water containing different concentrations of iodine,50(NI),0 (LI1),5(LI2),3000(HI1) and 10000 μg/L(HI2),respectively.After 12 weeks,urine samples were collected before copulation.The rats were sacrificed at the first(6-7 days),second (12-13 days) and third trimesters(19-20 days),respectively,serum and amniotic fluid samples were collected.Urinary iodine and iodine level in the fetal amniotic fluid were measured by As3+-Ce4+ catalytic spectrophotometry.Serum iodine was measured by mild acid digestion method.Results The baseline medians of urinary iodine of LI1 and LI2 groups(5.96,15.92 μg/L) were significantly lower than that of the NI group(43.75 μg/L,all P ＜ 0.01),and the values of HI and HI2 groups(5263.96,20389.64 μg/L) were significantly higher than that of the NI group (all P ＜ 0.01).The median of urinary iodine during pregnancy was significantly lower than that of the baseline of no pregnancy(all P ＜ 0.01).The medians of urinary iodine of the NI group at the first and the second trimesters (28.97,34.34 μg/L) were significantly lower than that of the third trimester(42.31 μg/L,all P ＜ 0.01).The means of serum iodine of LI1 and LI2 groups[(3.68 ± 1.69),(10.45 ± 4.16) μg/L] were significantly lower than that of the NI group [(23.68 ± 3.85)μg/L,all P ＜ 0.05],and the means of serum iodine of HI1 and HT2 groups [(502.67 ± 97.03),(822.15 ± 139.45)μg/L] were significantly higher than that of the NI group (all P ＜ 0.01).Although the mean of serum iodine of HI group gradually decreased with the progression of gestation,the difference was not statistically significant(all P ＞ 0.05).The iodine levels in amniotic fluid of fetal rats at the second and the third trimesters in LI1 group(0.85,3.00 μg/L) were significantly lower than that of the NI group(3.56,7.91 μg/L,all P ＜ 0.01),but the difference was not statistically significant between the iodine level in amniotic fluid of fetal rats of the LI2 and the NI groups at the second and the third trimesters(all P ＞ 0.05).The iodine levels in amniotic fluid of fetal rats at the second and the third trimesters in the HI1 group(49.59,171.21 μg/L) were significantly higher than that of the NI group(all P ＜ 0.01).The iodine levels in amniotic fluid of fetal rats at the second and the third trimesters in HI2 group (98.76,544.77 μg/L) were significantly higher than that of the NI group(all P ＜ 0.01).The iodine level in amniotic fluid of fetal rats in the third trimester was significantly higher than that of the second trimester in all the groups (all P ＜ 0.01).The ratios of serum iodine and urinary iodine of the LI1 and the LI2 groups (1.29 ± 1.14,1.70 ± 1.01) were significantly higher than that of the NI group(0.51 ± 0.37,all P ＜0.01),and that of the HI1 and the HI2 groups(0.21 ± 0.07,0.11 ± 0.07) were significantly lower than that of the NI group (all P ＜ 0.01).The ratios of amniotic fluid iodine and serum iodine of the LI and the LI2 groups (0.19 ± 0.15,0.32 ± 0.17) were significantly higher than that of the NI group(0.13 ± 0.05,P ＜ 0.01),but the difference was not statistically significant between HI1 and HI2 groups(0.09 ± 0.03,0.11 ± 0.04) and NI group(all P ＞ 0.05).The ratio of amniotic fluid iodine and serum iodine of the third trimester was significantly higher than that of the second trimester(all P ＜ 0.05).Conclusions Different iodine intake leads to changes in the levels of maternal iodine metabolism in rats during pregnancy.There probably is a protection mechanism in the mother's body,which protects the mother and the fetal from injury by iodine excess or iodine deficiency.

Objective To observe the effect of different levels of iodine nutrition on rat maternal thyroid function during pregnancy.Methods A total of 225 Wistar rats one month after weaning were involved in the study(female 165,male 60,body mass 80 to 100 g).Female rats were randomly divided into six groups by body mass:control group(NI group),iodine deficiency 1 and 2 groups(LI1,LI2 groups),iodine excess 1 and 2 groups (HI1,HI2 groups),and the control of not pregnant group(NNI group).There were 30 rats in 1-5 groups and 15 rats in group 6.LI1,LI2 groups:low iodine diet + deionized water of no iodine or iodine-containing 5 μg/L; HI1,HI2 groups:normal diet + deionized water of iodine 3000,10 000 μg/L; NI,NNI groups:normal diet + deionized water of iodine-containing 50 μg/L.After 12 weeks,the females(except group 6) mated the male by 2 ∶ 1,and then each pregnant female rat was fed in a single cage.The female mice were sacrificed in the first(5 ± 2)d,the second (12 ± 2)d and the third trimesters of pregnancy (17 ± 2)d,respectively,and there blood samples and thyroid were obtained.Serum total thyroxine(TT4),free thyroxine(FT4),total triiodothyronine (TT3),free triiodothyronine (FT3) and thyroid stimulating hormone(TSH) were determined by radioimmunoassay and serum thyroglobulin(TG) and thyroid-binding globulin (TBG) were determined by enzyme-linked immunosorbent assay.Results ①Thyroid absolute quality and relative quality was compared among groups,and the differences were statistically significant (F =16.55,24.25,F ＜ 0.01 or ＜ 0.05).②At the first,the second and the third trimesters of pregnancy,the differences of maternal serum TT4 and FT4 between groups were statistically significant(F =5.02,13.41,17.39,41.89,23.72,48.64,P ＜ 0.01 or ＜ 0.05).Female rats in NI,HI1 and HI2 groups in different pregnant periods among inner groups were compared,and the differences of serum TT4 and FT4 were statistically significant(F=3.27,6.98,8.22,8.65,29.68,7.90,P ＜ 0.01 or ＜ 0.05).③ In the first and the third trimesters of pregnancy,maternal serum TT3 was compared among groups,and the differences were statistically significant(F=3.59,8.22,P ＜ 0.05 or ＜ 0.01) ; in the second and the third trimesters of pregnancy,maternal serum FT3 was compared among groups,and the difference was statistically significant(F =3.86,4.26,P ＜ 0.05 or ＜ 0.01).Female rats in NI,LI1 and HI1 groups in different pregnant periods among inner groups were compared,and the differences of maternal serum TT3 were statistically significant(F =8.77,7.11,6.28,P ＜ 0.01 or ＜ 0.05).④At the first,the second and the third trimesters of pregnancy,the differences of maternal serum TG and TBG were compared in groups,and the differences were statistically significant(F =5.47,3.62,9.35,4.15,13.16,22.78,P ＜ 0.01 or ＜ 0.05).The differences of maternal serum TG of HI1 group and of serum TBG of NI group in different pregnant periods among inner groups were statistically significant (F =3.18,7.94,P ＜ 0.05).⑤At the first,the second and the third trimesters of pregnancy,the differences of maternal serum TSH in groups were statistically significant(F =4.83,7.08,6.52,P ＜ 0.01); the differences of maternal serum TSH of all the 5 groups in different pregnant periods among inner groups were statistically significant (F =3.26,8.89,11.45,4.04,3.78,P ＜ 0.05).Conclusions Different levels of iodine nutrition can cause changes in thyroid function in rats maternal thyroid function during pregnancy; serum TT4,FT4 level decreases when iodine deficiency,and increase with iodine excess.Serum TT3,FT3 level of does not changed significantly due to compensatory regulation of the body.