Objective: To study the effect of levothyroxine replacement therapy on improving diffused left ventricular myocardial lesions and cardiac function in patients with hypothyroidism. Methods: Our research included 2 groups: Hypothyroidism group,n=20 newly diagnosed patients and Control group, n=17 normal healthy subjects. Diffused left ventricular myocardial lesions were quantitatively evaluated by non-invasive cardiac MRI T1 mapping technique. Left ventricular myocardial T1 value and left ventricular function before and after levothyroxine replacement therapy were compared; the relationship between T1 value and thyroid function and the relationship between T1 value and the indicators of left ventricular function were analyzed. Results:①Compared with Control group, Hypothyroidism group had increased left ventricular myocardial T1 value, P<0.01, while decreased cardiac index (CI) and left ventricular peak filling rate (PFR), allP<0.05.②In patients with hypothyroidism, left ventricular myocardial T1 value was negatively related to serum FT3 level (r=-0.52,P=0.0006) and PFR (r=-0.43,P=0.0085).③Compared with pre-therapeutic condition, the patients with recovered normal thyroid function showed obviously decreased left ventricular myocardial T1 value and improved CI, PFR. Conclusion: Levothyroxine replacement therapy may improve diffused left ventricular myocardial lesions in patients with hypothyroidism, and therefore improve the cardiac function.

Objective To investigate the significance of helper T cell 1(Th1)/Th2 cytokines unbalance in children with hepatitis B virus-associated glomerulonephritis(HBV-GN).Methods The serum levels of interferon-gamma(IFN-?),interleukin-2(IL-2) and IL-4 were determined in 22 children with HBV-GN and 18 children with HBV by enzyme-linked immunosorbent assay(ELISA),respectively,and the difference of Th1/Th2 cytokines in the 2 groups.Results Serum levels of IL-2 and IFN-? in children with HBV-GN were decreased(P

0.05),but urine levels of MIF in children HSPN increased significantly than those in normal controls(P

Psathyrostachys juncea is a potential source of useful genes, such as the barley yellow dwarf virus resistance, salt tolerance and drought tolerance, for wheat improvement. Conventional sexual hybridization between wheat and Psathyrostachys juncea is very difficult to occur as the two are sexual incompatible. Somatic hybridization is a promising technique for creating hybrids across the sexual border. Here we report a fusion system for somatic hybridization of wheat using PEG method. Mixed protoplasts of two wheat (Triticum aestivum L. cv. Jinan 177) culture cells (cha9 and 176) were used as the recipients to fuse with the donors, the protoplasts of Psathyrostachys juncea (Fisch.) Nevski irradiated with ultraviolet light (UV) at an intensity of 380 microW/cm2 for 1 min or 2 min. Sixteen clones were generated in the combination I, (wheat 176 + wheat cha9 + P. juncea 1 min UV treatment) and five of the hybrid clones could differentiate to green plants. All the regenerated clones were confirmed as somatic hybrids by cytological, isozyme, chromosome and random amplified polymorphic DNA (RAPD) analysis. Chloroplast genome of the hybrids was analyzed using 7 pairs of wheat-specific chloroplast microsatellite (SSR) primers. Three clones were obtained from the combination II (wheat 176 + wheat cha9 + P. juncea 2 min UV treatment), and all browned slowly and died in 3 months. This result indicated that the mixed wheat cells was helpful to the formation and regeneration of hybrid callus and the dosage of the UV had significant effect on the development of the fusion products.
Chromosomes, Plant ; Hybridization, Genetic ; Poaceae ; genetics ; growth & development ; Random Amplified Polymorphic DNA Technique ; Regeneration ; Triticum ; genetics ; growth & development

Three hundred and twenty-one bacteria strains were obtained from rice leaves,stem,root tissue and paddy field soil,of which the number of strains which can inhibit mycelium of Magnaporthe grisea growth markedly was fifty-seven through fermentation in 2.0 mL Eppendorf tube,and among these fifty-seven strains,five strains were strongly antagonistic to Magnaporthe grisea.These five strains was identified for their morphologic,physiological and biochemical characteristics,and the results showed that one strain(No.156)was bacillus subtilis,two strains(No.171 and No.177)were Bacillus pumillus and two strains(No.192 and No.279)were Bacillus ploymyxa.

Objective To evaluate the effect of the conspecific bone marrow mesenchymal stem cells (MSCs) infusion on the platelets count and the ratio of CD4+ CD25highCD127low regulatory T (Treg) cells in mice with immune thrombocytopenia and the mechanisms.Method ITP mice models were induced by daily intraperitoneal injection of 200 μL phosphate buffer solution [containing 2 μg rat anti-platelet membrane CD41 antibody (MWReg30)] into female Balb/c mice.MSCs were got from male mice.Then different number of MSCs was injected into ITP mice through the tail veins.After 5,7 and 14 days,the number of blood platelets was counted and the ratio of Treg cells was detected by flow cytometry,and compared with those in the healthy mice.Result Twenty-four h after injection of CD41 antibody,platelet counts were reduced sharply to the lowest point,which was about a quarter of the normal level.Then ITP mice models were induced successfully.Platelet counts were increased after the injection of MSCs.On 7th day after injection of MSCs,the platelet counts were significantly higher than those in control mice,and the greater the degree of injection dosage,the greater the elevated platelets (P＜0.05 for all).The ratio of Treg cells in ITP mice models was significantly lower than in the normal mice.The ratio of peripheral blood Treg cells in ITP mice was increased after injection of MSCs and the higher the dose,the greater the effect (P＜0.05 for all) but did not reach the normal level.Conclusion The conspecific bone marrow MSCs infusion can increase the platelet counts in mice with ITP,which may be related to the increase of CD4+ CD25highCD127low Treg cells.

Objective:To valuate the treatment value and analyse the effect on the cellular immune functions by studying the differences of T-lymphocyte subsets and CD4+CD25+Treg cells in peripheral blood after adoptive immunotherapy ( dendritic cells and cytokine-induced killer cells,DC-CIK) combined with chemotherapy on MM.Methods:50 patients with MM were randomly divided into two groups.24 patients in chemotherapy group were treated by chemotherapy only,26 patients in joint group were treated by adoptive immunotherapy( DC-CIK) combined with chemotherapy,and the clinical outcomes and the levels of T-lymphocyte subsets and CD4+CD25+Treg cells in peripheral blood between two groups were compared.Moreover,the differences of cellular immune indicators (Th1/Th2,the ratio of AgNOR,and TGF-β)between two groups were also compared.Results: After treatment,quality of life,clinical index and survival in joint group were better than in chemotherapy group( P<0.05);the proportion of CD3+CD8+,the ratios of CD4+CD25+,CD4+CD25+/CD4+and the level of TGF-βof joint group wes clearly lower than chemotherapy group(P<0.05),and the ratios of CD3+CD4+/CD3+CD8+, Th1/Th2 and AgNOR of joint group wes clearly higher than chemotherapy group .Conclusion: DC-CIK combined with chemotherapy could be an effective and promising treatment to patients with MM,and it maybe strengthen the anti-tumor action of bodies by regulating the balance between Th1 and Th2 reaction.

Objective Obtaining chemical constituents of Angelica apaensis collected in Qiaojia County of Yunnan Province and detecting their anti-tumor activities in vitro. Methods The MeOH extract of was repeatedly subjected to column chromatography over silica gel, Sephadex LH-20 and/or RP-18 and semipreparative HPLC. Their anti-tumor activities in vitro were measured by MTT colorimetric assay. Results Eight compounds were isolated from the roots of this plant. Conclusion The major type of chemical constituents of in Yunnan is furocoumarin. These separated compounds showed weak anti-tumor activity in vitro.

Objective To explore the effects of mesenchymal stem cells ( MSC ) treatment on platelet counts in mice with immune-mediated thrombocytopenia ( ITP) and the possible mechanism .Meth-ods ITP was induced by daily intraperitoneal injection of anti-platelet membrane CD 41 antibody (MWReg30) into BALB/c mice.The mice were then divided into experiment and control groups with 20 mice in each.Each mouse in experimental group was injected with 2×107 mesenchymal stem cells (MSC) through the tail vein .The numbers of blood platelets in mice from two groups were counted on days 5, 7 and 14 after MSC injection .Reverse transcriptase polymerase chain reaction ( RT-PCR) was performed to meas-ure T-bet and GATA-3 gene expression in peripheral blood mononuclear cells ( PBMCs ) at mRNA level on day 14.The levels of IFN-γ, IL-2, IL-4 and IL-10 in serum were detected by ELISA .Results The platelet counts in experimental group were significantly higher than those in control group on days 7 and 14 after MSC injection [(588.0±81.6)×109/L and (623.0±78.9) ×109/L vs.(317.0±90.1) ×109/L and (288.0± 87.8)×109/L ] (P<0.05).On day 14 after MSC injection, the T-bet expression at mRNA level in PBMCs from mice in experimental group was significantly lower than that in control group [(0.04±0.03) vs.(0.27 ±0.05)] (P<0.05), while the GATA-3 expression at mRNA level was higher than those in control group [ (0.14±0.04) vs.(0.07±0.05)] (P<0.05).Compared with control group, the concentrations of Th1 type cytokines such as IFN-γand IL-2 were remarkably down-regulated in experimental group [(3.1±1.7) pg/ml and (3.2±2.1) pg/ml vs.(10.3±4.8) pg/ml and (16.3±5.7) pg/ml](P<0.05), while the con-centrations of Th2 type cytokines such as IL-4 and IL-10 were up-regulated in experimental group [(88.6± 15.2) pg/ml and (38.3±11.8) pg/ml vs.(32.7±5.7) pg/ml and (22.1±3.4) pg/ml ] (P<0.05). Conclusion MSC treatment can effectively increase platelet counts in mice with immune-mediated thrombo-cytopenia, which may be associated with the suppression of Th 1-dominant response mediated by abnormal ex-pression of T-bet and GATA-3.

The improving effect of electrospun drug-loaded nanofibers on the solubility of poorly water-soluble drug was investigated in the present research. Drug-loaded nanofibers were successfully prepared using electrospinning process with helicid as the poorly water-soluble model drug and polyvinylpyrrolidone K60 (PVP K60) as the filament-forming matrix. Scanning electron microscopy observation demonstrated that the nanofibers had a three-dimensional continuous web structure, and had well smooth surface and a diameter between 400-600 nm. X-ray diffraction results suggested that helicid lost its original crystal structure but highly distributed into the nanofibers in an amorphous state, resulting from the hydrogen bonding interactions between the carboxylic group of PVP K60 and the hydroxyl groups of helicid. The drug-loaded nanofibers obviously improved helicid's solubility, and were able to completely release the whole drug in 60 s. Electrospun drug-loaded nanofibers can improve the solubility and release profiles of poorly water-soluble drug.
Benzaldehydes ; administration & dosage ; chemistry ; Drug Carriers ; Drug Compounding ; Electrochemical Techniques ; methods ; Microscopy, Electron, Scanning ; Nanofibers ; chemistry ; ultrastructure ; Pharmaceutical Preparations ; chemistry ; Povidone ; chemistry ; Solubility ; Spectrophotometry, Ultraviolet ; X-Ray Diffraction