Animals ; Evoked Potentials, Motor ; physiology ; Male ; Rats ; Rats, Sprague-Dawley ; Signal Transduction ; Spinal Cord ; physiology

Since haemoplasmodium is not detected for screening in blood donor,morbidity of transfusion-associated malaria increased rapidly in China recently and became an important problem of public health.It is necessary to emphasize donor screening for malaria.Hematology analyzer with MAPSS is recommended to screen malaria.Flow cytometry and immunochromatography test(ICT)can also screen malaria effectively.For the suspicious samples with haemoplasmodium,it is necessary to be reexamined by standard microscopic examination or polymerase chain reaction(PCR).

Objective To study the time the liver injuries appeared,the different level of liver injury induced by injecting Cisplatin and Carboplatin in mice and the possible mechanisms of the liver injury.Methods Mice were intravenously given,Cisplatin(17 mg/kg),Carboplatin(67 mg/kg) respectively.In the 3th,7th,11 th and 14th day after injecting the medicines,the serum biochemistry parameters,oxidation and antioxidation parameters of liver and histopathologic change in hepatic tissue were observed.Results HE stain showed that fatty degeneration of hepatocyte in the two experiment groups in the 3th day after injecting medicines,and hepatocellular spotty necrosis,and infiltration of inflammatory cells arroud the necrotic liver were found in,Cisplatin group.The level of aspartate aminotransferase and alkaline phosphatase in the two experiment groups increased significantly compared with those in the control (group P＜0.01),and alanine aminotransferase in Cisplatin group increased significantly(P＜0.01),compared with that in the control group and Carboplatin group.Conclusion Hepatic injury was observed in the 3th day after injecting medicines,the level of liver injury in Cisplatin group was heavier than that in Carboplatin group.

Objective:To assess the surgical outcome of patients with mesenchymal chondrosarcoma (MCS) treated in our insti-tute. This study was also designed to describe the clinical characteristics, treatment, and outcome of MCS to provide a better understand-ing of its clinical management. Methods:A total of 27 patients with MCS were treated in Peking University People's Hospital, Beijing, China from October 1997 to March 2011. Demographic information and follow-up data were obtained and statistically analyzed. Re-sults:Among the 27 patients, 9 were males and 18 were females with a mean age of 30.4 years (ranging from 14 years to 51 years). The median follow-up time was 42.6 months (ranging from 6 months to 104 months). Among the total number of tumor cases, 22 and 5 were detected in bone tissues and extra-skeletal sites, respectively. A total of 25 patients underwent surgery, but only 17 achieved the standard surgical margin of wide excision. Among these patients, 16 and 13 were subjected to chemotherapy and irradiation. The three-and five-year survival rates were 65%and 49.5%, respectively. Conclusion:MCS is a rare tumor resulting in morbidity with local recur-rences and long-term metastases. In this study, standard multimodal regimens were proposed to treat MCS. The results recommended wide resection with suitable surgical margins as the preferred treatment. However, further studies should be conducted because the infor-mation about the benefits of chemotherapy and radiotherapy for the control of local or systemic symptoms of MCS remains insufficient.

0.05). The mean ADC value obtained in poor group was significantly lower than that obtained in satisfactory group (t = 4.81,P

Whether or not an abormal expression of IL-6 mRNA in PBMNCs from IDDM patientswas examined using a hihgly sensitive,specific and semiquantitative protocal,i.e.reverse tran-scription and polymerase chain reaction (RT-PCR).The relative levels of IL-6mRNA in PBM-NCs from 12 early IDDMpatients (8.20?3.85yr),29 newly diagnosed NIDDM patients(54.85?9.12yr)23 normal childrens (8.20?3.26yr) and 12 normal adults (31.92?11.22yr)weredetermined.Significantly high expresion levels of IL-6 mRNA were found in PBMNCs from pa-tients with IDDM (P

The zinc-regulated transporters (ZRT), iron-regulated transporter (IRT)-like protein (ZIP) plays an important role in the growth and development of plant. In this study, a full length cDNA of ZIP encoding gene, designed as DoZIP1 (GenBank accession KJ946203), was identified from Dendrobium officinale using RT-PCR and RACE. Bioinformatics analysis showed that DoZIP1 consisted of a 1,056 bp open reading frame (ORF) encoded a 351-aa protein with a molecular weight of 37.57 kDa and an isoelectric point (pI) of 6.09. The deduced DoZIP1 protein contained the conserved ZIP domain, and its secondary structure was composed of 50.71% alpha helix, 11.11% extended strand, 36.18% random coil, and beta turn 1.99%. DoZIP1 protein exhibited a signal peptide and eight transmembrane domains, presumably locating in cell membrane. The amino acid sequence had high homology with ZIP proteins from Arabidopsis, alfalfa and rice. A phylogenetic tree analysis demonstrated that DoZIP1 was closely related to AtZIP10 and OsZIP3, and they were clustered into one clade. Real time quantitative PCR analysis demonstrated that the transcription level of DoZIP1 in D. officinale roots was the highest (4.19 fold higher than that of stems), followed by that of leaves (1.12 fold). Molecular characters of DoZIP1 will be useful for further functional determination of the gene involving in the growth and development of D. officinale.
Amino Acid Sequence ; Cloning, Molecular ; Dendrobium ; chemistry ; classification ; genetics ; metabolism ; Gene Expression Regulation, Plant ; Iron ; metabolism ; Membrane Transport Proteins ; chemistry ; genetics ; metabolism ; Molecular Sequence Data ; Phylogeny ; Plant Proteins ; chemistry ; genetics ; metabolism ; Plants ; chemistry ; classification ; genetics ; Sequence Alignment ; Zinc ; metabolism

Organophosphate chemicals are widely used as agricultural pesticides and war reagents, their biodegradation is emphasized on the theoretical and practical aspects. Organophosphate hydrolases play important roles in the biodegradation of organophosphate chemicals. Great advancement was achieved recently in the determination of crystal structure and catalytic mechanisms of the hydrolase. This paper reviewed the research progresses in the enzymology, protein structure, catalytic mechanisms and application of the organophosphate hydrolase, and predicted the future research in this field.

Background Intravitreal injection with triamcinolone acetonide (TA) may cause complications,including increase of intraoculapressure (IOP),cataracand endophthalmitis.Ketorolatromethamine (Ketorolac) inew,lesadverse reactionof non-steroidal anti-inflammatory drug.The action mechanism of Ketorolaisimilato TA.Therefore,Ketorolamay be completely opartly replace Tin the treatmenof retinal edema.Objective The purpose of thistudy wato investigate the effectof Tand Ketorolaon the expressionof aquaporin-4 (AQP4) and vasculaendothelial growth facto(VEGF) in hypoxiretinal Müllecellin vitro and to explore the mechanism of treating retinal edemwith Tand Ketorolac.MethodThe propose of research and use of the animalwere approved by Animal ExperimenResearch Review Committee of Hubei University of Medicine.Twenty eyeof New Zealand albino rabbitwere extracted and the retinal tissue waisolated.The Müllecellwere cultured and passaged using the enzymatidigestion method and Müllecellwere identified using glial fibrillary acidiprotein (GFAP),vimentin and α-smooth muscle actin (α-SMA) by immunofluorescence staining.The hypoxicell modelwere established by culturing the cellin DMEM with 500 μmol/L CoCl2 fo0,6,12,24 hours.The cellof hypoxifo24 hourwere divided into normal control group,hypoxicontrol group,hypoxia+50,100,200 mg/L To50,100,200 mg/L Ketorolagroups.Corresponding drugwere added into the medium in the differengroups.The expressionof AQP4 mRNand VEGF mRNin Müllecellwere detected by semi-quantitative reverse transcription PC(RT-PCR).ResultThe cellgrew well and reached 80％ confluence with the irregulashape and ovoid nuclei 14-15 dayaftecultured.More than 95％ primary cellshowed positive reaction to GFAP,vimentin and α-SMA.The expressing levelof AQP4 mRNand VEGF mRNin Müllecell(values) were significantly differenin varioutime point(AQP4 mRNA:F=18.70,P＜0.01 ; VEGF mRNA:F =53.20,P＜0.01),and those of 6,12 and 24 houraftecultured with CoCl2were increased than those withouCoCl2 (P＜0.05).The expressing levelof AQP4 mRNand VEGF mRNin Müllecell(values) were significandifferenamong the normal control group,hypoxicontrol group,hypoxia+50,100,200 mg/L ToKetorolagroup(AQP4 mRNA:F =27.98,P ＜ 0.01 ; VEGF mRNA:F =10.03,P ＜0.01).Compared with the hypoxicontrol group,the expressing levelof AQP4 mRNand VEGF mRNin the Müllecellwere declined in the hypoxia+ 100,200 mg/L Tgroup and the hypoxia+100,200 mg/L Ketorolagroup (P＜0.05).The expressing levelof AQP4 mRNand VEGF mRNwere found statistically insignificandifference between hypoxia+ 100 mg/L Tgroup and hypoxia+ 100 mg/L Ketorolagroup,obetween hypoxia+ 200 mg/L Tgroup and hypoxi+200 mg/L Ketorolagroup (P＞ 0.05).ConclusionTand Ketorolacan downregulate the expressionof AQP4 and VEGF in Müllecellundehypoxiconditions,inferring thathey have similamechanism in the impacon AQP4 function in retinal edematoueye.

Mitogen-activated protein kinases (MAPKs) are important signaling transduction components well conserved in eukaryotes and play essential roles in various physiological, developmental and hormonal responses in plant. In the present study, a MAPK gene, designated as DoMPK4 (GenBank accession No. JX297597), is identified from a rare endangered medicinal orchid species D. officinale using the reverse transcription polymerase chain reaction (RT-PCR) and rapid amplification of cDNA ends (RACE) methods. The full length cDNA of DoMPK4 is 1 518 bp in length and encoded a 369 aa protein with a molecular weight of 42.42 kD and an isoelectric point of 5.55. DoMPK4 protein contained a serine/threonine protein kinase active site (158-170), a MAP kinase site (71-174), and eight conserved motifs. DoMPK4 had a transmembrane (214-232) but no signal peptide. Multiple sequence alignment showed that DoMPK4 shared high identities (74.9%-80.6%) with MAPK proteins from various plants. Phylogenetic analysis demonstrated that DoMPK4 belonged to group A of the MAPK evolutionary tree, and is closely related to monocots. Real time quantitative PCR (qPCR) analysis revealed that DoMPK4 is differentially expressed among the five organs including leaf, stem, root, seed, and protocorm-like body (PLB). The transcription level of DoMPK4 is the highest in the PLBs with 17.65 fold, followed by seeds, roots, and stems with 5.84, 2.28, and 1.64 fold, respectively. The progressive enhancement of DoMPK4 transcripts in the developing PLBs compared to that in the germinating seeds, suggests a role of DoMPK4 during the development of embryogenic PLBs formation in D. officinale.
Amino Acid Sequence ; DNA, Complementary ; genetics ; DNA, Plant ; genetics ; Dendrobium ; enzymology ; genetics ; Gene Expression Regulation, Plant ; Mitogen-Activated Protein Kinases ; genetics ; metabolism ; Phylogeny ; Plant Leaves ; metabolism ; Plant Proteins ; genetics ; metabolism ; Plant Roots ; metabolism ; Plant Stems ; metabolism ; Seeds ; metabolism ; Sequence Alignment