Adult ; Female ; Food Industry ; manpower ; Humans ; Male ; Middle Aged ; Smoking ; epidemiology ; Thiocyanates ; urine

Objective To investigate the curative effect of allogeneic hematopoietic stem cell transplantation (allo-HSCT) and the method of the pretreatment choice on myelodysplastic syndrome (MDS).Methods 13 cases who were undergoing allo-HSCT including 10 HLA-matched, 2 HLA partially matched,and one umbilical cord blood transplanted patients were enrolled in this study. The infusion number of MNC and CD+34 cells is 6.92 (2.65-21.33)×108/kg and 4.47 (1.49-10.22) ×106/kg, respectively. Of the 13 cases,5 adopted TBI, fludarabine(Flud), and cyclophosphamide(Cy) pretreatment, 3 chose BU/Cy pretreatment, and 3 chose TBI and Cy pretreatment, 2 chose Ara-C+BU+Cy+VM26 pretreatment. In order to prevent GVHD, 2cases of HLA partially matched were treated with ATG, cyclosporin A (CsA), MTX and MMF aftertransplantation, while the others were treated with CsA and MTX only. Results 9 out of 13 cases achieved hematopoietic reconstruction completely. 4 died of complications. Conclusion The allogeneic hematopoietic stem cell transplantation is an efficient regimen to cure MDS. The pretreatment should adopt the individuation.

Air ; analysis ; Chromatography, Gas ; methods ; Ethylene Oxide ; analysis ; Furans ; analysis ; Methylene Chloride ; analysis ; Workplace

The purpose of this study was to evaluate the roles of different housing environments in neurological function,cerebral metabolism,cerebral infarction and neuron apoptosis after focal cerebral ischemia.Twenty-eight Sprague-Dawley rats were divided into control group (CG) and cerebral ischemia group,and the latter was further divided into subgroups of different housing conditions:standard environment (SE) subgroup,individual living environment (IE) subgroup,and enriched environment (EE) subgroup.Focal cerebral ischemia was induced by the middle cerebral artery occlusion (MCAO).Beam walking test was used to quantify the changes of overall motor function.Cerebral infarction and cerebral metabolism were studied by in vivo magnetic resonance imaging and 1H-magnetic resonance spectra,respectively.Neuron necrosis and apoptosis were detected by hematoxylin-eosin and TUNEL staining methods,respectively.The results showed that performance on the beam-walk test was improved in EE subgroup when compared to SE subgroup and IE subgroup.Cerebral infarct volume in IE subgroup was significantly larger than that in SE subgroup (P＜0.05) and EE subgroup (P＜0.05) on day 14 after MCAO.NAA/Cr and Cho/Cr ratios were lower in MCAO groups under different housing conditions as compared to those in CG (P＜0.05).NAA/Cr ratio was lower in IE subgroup (P＜0.05) and higher in EE subgroup (P＜0.05) than that in SE subgroup.NAA/Cr ratio in EE was significantly higher than that in IE subgroup (P＜0.05).Cho/Cr ratio was decreased in MCAO groups as compared to that in CG (P＜0.05).A significant decrease in normal neurons in cerebral cortex was observed in MCAO groups as compared to CG (P＜0.05).The amount of normal neurons was less in IE subgroup (P＜0.05),and more in EE subgroup (P＜0.05) than that in SE subgroup after MCAO.The amount of normal neurons in EE subgroup was significantly more than that in IE subgroup after MCAO (P＜0.05).The ratio of TUNEL-positive neurons in EE was significantly lower than that in SE subgroup (P＜0.05) and IE subgroup (P＜0.05).Correlation analysis showed that the beam walking test was negatively correlated with NAA/Cr ratio (P＜0.05).Cerebral infarct volume was negatively correlated with both NAA/Cr ratio (P＜0.01) and Cho/Cr ratio (P＜0.01).The amount of normal cortical neurons was positively correlated with both NAA/Cr ratio (P＜0.01) and Cho/Cr ratio (P＜0.05).The TUNEL-positive neurons showed a negative correlation with both NAA/Cr ratio (P＜0.01) and Cho/Cr ratio (P＜0.01).This study goes further to show that EE may improve neurological functional deficit and cerebral metabolism,decrease cerebral infarct volume,neuron necrosis and apoptosis,while IE may aggravate brain damage after MCAO.

Objective To assessed the expression of inducible costimulator(ICOS)on peripheral blood and joint fluid CD4,CDS,CD45RO T cells and B cells in rheumatoid arthritis(RA).Methods Expression of ICOS and ICOS/CD45RO on peripheral blood and joint fluid CD4~+CD8~+T cells and ICOS ligand(ICOSL)on CD19 B cells from RA patients and healthy volunteers were determind by three-color flow cytometry.Compar- ision with active and inactive RA,initial and relapsed RA had been done.Results Joint fluid CD4 and CD8 T cells expressing ICOS,ICOS/CD45RO were significantly increased than peripheral blood in RA patients and healthy subjects.Joint fluid B cells expressing ICOSL were significantly reduced than peripheral blood in RA patients.Meanwhile,peripheral blood B cells expressing ICOSL were significantly reduced in active RA than inactive RA patients.Conclusion Hyperexpression of ICOS and ICOS/CD45RO on joint fluid CD4 and CD8 T cells and lowexpression of ICOSL in B cells from RA patients,expecially in active RA may contribute to the local immunopathological roles and joint destructions in the pathogenesis of RA.

We have reported that hypoxia increases the activation of 15-lipoxygenase (15-LO), which converts arachidonic acid (AA) into 15-hydroxyeicosatetraenoic acid (15-HETE) in small pulmonary arteries (PAs). Through inhibition of Kv channels, 15-HETE causes more robust concentration-dependent contraction of PA rings from the hypoxic compared to the normoxic controls. However, the subtypes of Kv channels inhibited by 15-HETE are incompletely understood. The aim of the present study was to identify the contribution of Kv3.4 channel in the process of pulmonary vasoconstriction induced by 15-HETE using the tension studies of PA rings from rat with Kv3.4 channel blocker in tissue bath; to explore the role of vascular endothelium in15-HETE-induced pulmonary vasoconstriction through denuded endothelia of PA rings; and to define the downregulation of 15-HETE on the expression of Kv3.4 channel in cultured pulmonary artery smooth muscle cells (PASMCs) with RT-PCR and Western blot. In the present study, healthy Wistar rats were divided randomly into two groups: Group A with normal oxygen supply and group B with hypoxia. Six days later, the rats were killed. Pulmonary artery rings were prepared for organ bath experiments. Firstly, different concentrations of 15-HETE (10~1 000 nmol/L) were added to the Krebs solution. The isometric tension was recorded using a four-channel force-displacement transducer. Then Kv3.4 channel blocker, 100 nmol/L BDS-I, was added, followed by adding 1 mumol/L 15-HETE, and the isometric tension was recorded. Furthermore, RT-PCR and Western blot were employed to identify the influence of 15-HETE on the expression of Kv3.4 channel in cultured rat PASMCs.The results showed the PA tension was significantly increased both in groups A and B by 15-HETE in a concentration-dependent manner (P<0.05), especially in group B (P<0.05 compared to control); denuded endothelia enhanced 15-HETE concentration-related constrictions in rat PA rings; Kv3.4 channel blocker, BDS-I, significantly decreased the PA ring constriction induced by 15-HETE (P<0.05); the expressions of Kv3.4 mRNA and protein in rat PASMCs were significantly downregulated by 15-HETE (P<0.05). Based on all the information above, we conclude that Kv3.4 channel is involved in vasoconstriction induced by 15-HETE in rat PAs.
Animals ; Cells, Cultured ; Female ; Hydroxyeicosatetraenoic Acids ; pharmacology ; Hypertension, Pulmonary ; physiopathology ; Hypoxia ; physiopathology ; Male ; Muscle, Smooth, Vascular ; cytology ; pathology ; Pulmonary Artery ; cytology ; physiopathology ; RNA, Messenger ; genetics ; metabolism ; Rats ; Rats, Wistar ; Shaw Potassium Channels ; antagonists & inhibitors ; genetics ; metabolism ; Vasoconstriction ; drug effects

ObjectiveTo study the effect of menbranous milkvetch root parenteral solution on insulin resistance of gerontism cerebral infarction in recovery stage.Methods66 patients with gerontism cerebral infarction were randomly divided into therapy group(33 cases) which received membranous milkvetch root parenteral solution and control group(33 cases).Both groups adopted routine treatment at the same time, the period was 20 days. Insulin(Ins), free blood sugar(FBS), total cholesterol(CH), triglyceride(TG), hemorheology and insulin resistance(indicating by index of insulin sensitive) of blood on empty stomach were evalutated before and after treatment. ResultsAfter treatment there was decrease in CH, FBS, FINS in therapy group than in control group(P<0.01 or P<0.05); the clinical effect in therapy group was better than in control group(P<0.01).ConclusionMembranous milkvetch root parenteral solution can significantly decrease insulin resistance, blood lipin, blood viscosity in recovery stage of gerontism cerebral infarction, and improve clinical efficiency.

OBJECTIVETo investigate the myocardial electrophysiological effect and its underlying mechanisms of atorvastatin (Ator) on isolated rat hearts injured by ischemia/reperfusion (I/R).

METHODSIsolated SD rat hearts were mounted on Langendorff system, and a local I/R was induced by ligation (30 min) and release (15 min) of the left anterior descending artery. During the reperfusion period, the effect of Ator on diastolic excitation threshold (DET), effective refractory period (ERP) and ventricular fibrillation threshold (VFT) on rat heart were measured.

RESULTCompared with the control group, medium concentration of Ator prolonged the ERP in normal rat hearts; low, medium and high concentration of Ator significantly inhibited the decrease of DET, ERP and VFT induced by I/R. However, pretreatment with L-NAME cancelled these cardiac electrophysiological effects of Ator.

CONCLUSIONAtor reduced electrophysiological alteration induced by I/R in isolated rat hearts, which may be mediated by activating nitric oxide pathway to enhance the myocardial electrophysiological stability.

Animals ; Atorvastatin Calcium ; Electrophysiological Phenomena ; Heart ; drug effects ; physiopathology ; Heptanoic Acids ; pharmacology ; In Vitro Techniques ; Myocardial Reperfusion Injury ; metabolism ; physiopathology ; Myocardium ; metabolism ; Nitric Oxide ; metabolism ; Pyrroles ; pharmacology ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo study the effects of conventional mechanical ventilation (CMV) with low tidal volume on developmental porcine lungs by examining the expression of growth factors and inflammatory mediators.

METHODSTwelve preterm piglets born at 99 days of gestational age, 12 term neonatal piglets and 11 young piglets (4-5-weeks old) were randomly placed on CMV or were not ventilated (control group). The ventilator settings were adjusted to provide a tidal volume of 6-8 mL/kg in order to maintain a normal blood-gas value. After 6 hrs (preterm piglets) or 24 hrs (neonatal and young piglets) of mechanical ventilation, the mRNA expression of growth factors PDGF-B, IGF-I, KGF, HGF, VEGF and TGF-beta1 and proinflammatory cytokines IL-1beta, IL-6, IL-8 and TNF-alpha in the lung tissue was measured using RT-PCR. Growth factor protein expression was measured with immunohistochemistry.

RESULTSIn preterm piglets, the CMV group had increased mRNA expression of PDGF-B (5.11+/-0.10 vs 4.88+/-0.01), IL-1beta (4.95+/-0.27 vs 4.08+/-0.37), IL-6 (4.76+/-0.27 vs 4.00+/-0.28) and IL-8 (5.31+/-0.57 vs 4.15+/-0.46), but decreased IGF-I mRNA expression (3.54+/-0.13 vs 3.80+/-0.11) compared with those in the control group (P<0.05 or 0.01). In term neonatal piglets and young piglets, there were no significant differences in the mRNA expression of growth factors and proinflammatory cytokines between the CMV and control groups.

CONCLUSIONSCMV caused inflammatory injury in immature lungs by increasing the expression of proinflammatory cytokines and PDGF-B and decreasing IGF-I expression. However, CMV had no effects on pulmonary expression of growth factors and inflammatory mediators in term neonatal piglets and young piglets.

Animals ; Bronchoalveolar Lavage Fluid ; chemistry ; Immunohistochemistry ; Inflammation Mediators ; analysis ; Intercellular Signaling Peptides and Proteins ; analysis ; genetics ; Lung ; metabolism ; Peroxidase ; analysis ; Phospholipids ; analysis ; RNA, Messenger ; analysis ; Respiration, Artificial ; Reverse Transcriptase Polymerase Chain Reaction ; Swine ; Tidal Volume ; Vascular Endothelial Growth Factor A ; analysis ; genetics

OBJECTIVETo explore a feasibility of engraftment of systemically transplanted bone marrow stromal cells (BMSCs) and differentiation into lung epithelial cells in lipopolysaccharides (LPS)-injured lungs.

METHODSBMSCs were isolated from bone marrow of transgenic green fluorescent protein (GFP) C57BL/6J mice and systemically administered to bone marrow-suppressed wild-type C57BL/6J mice. A mouse model of lung injury was prepared by intratracheal instillation of LPS. Recipients were assigned to four groups: intratracheal PBS + BMSCs transplantation (CM), intratracheal LPS + BMSCs transplantation (LM), intratracheal PBS + irradiation + BMSCs transplantation (CIM) and intratracheal LPS+ irradiation + BMSCs transplantation (LIM). BMSCs engraftment in recipient lungs was determined by immunofluorescent staining 14 days after BMSCs administration. Alveolar epithelial type II cells were isolated from recipient lungs and the rate of GFP positive cells was measured by flow cytometry. Expression of surfactant protein (SP)-A, SP-C and aquaporin (AQP)-5 mRNA in the lungs was evaluated by real-time PCR.

RESULTSGFP and cytokeratin positive cells were observed in lung parenchyma of the CIM and the LIM groups, but not in the CM and the LM groups. The LIM group had more positive cells than the CIM group. The rates of GFP positive cells were higher in the CIM (11.10+/- 3.19%) and the LIM groups (14.40+/- 2.40%) than those in the CM and the LM groups (2.82+/- 1.03% and 3.81+/- 0.93%, respectively; P< 0.05). The LIM group had higher mRNA expression of SP-C than the CM group (2.09+/- 0.18 vs 1.38+/- 0.30; P< 0.05).

CONCLUSIONSDonor derived BMSCs can engraft in LPS-injured lungs and differentiate into lung epithelial cells, suggesting BMSCs transplantation might contribute to lung repair.

Animals ; Aquaporin 5 ; genetics ; Bone Marrow Cells ; cytology ; Cell Differentiation ; Female ; Lipopolysaccharides ; toxicity ; Lung ; drug effects ; metabolism ; pathology ; Lung Injury ; therapy ; Male ; Mice ; Mice, Inbred C57BL ; Peptides ; genetics ; Pulmonary Surfactant-Associated Protein A ; genetics ; RNA, Messenger ; analysis ; Stromal Cells ; cytology ; transplantation