Purpose:To explore the effects of stem cell factor(SCF) in combination with erythropoietin (EPO) on erythropoiesis in patients with anemia associated with non-Hodgkin's lymphoma (NHL). Methods:Bone marrow (BM) mononuclear cells (MNC) from NHL patients and normal simples were cultured for 7 consecutives days in the presence or absence of SCF, EPO, and SCF+EPO in liquid medium. Erythropoiesis was analyzed by calculating the fraction of recovered erythroid cells and by flow cytometry. Results:Cultures stimulated with SCF+EPO contained a marked increased fractions of recovered erythroid cells compared to cells cultured in EPO alone in NHL simples (P

Aim To investigate the effect of selective cyclooxygenase-2 inhibitor, NS-398, on cell apoptosis in leukemia cell line K562 cells and its underlying mechanism. Methods Apoptotic cell percentage was examined by flow cytometry(FCM). The protein expression of Bcl-2 and Caspase-3 was detected by Western blot, and the activity of Caspase-3 was checked by FCM. Results NS-398 induced the cell apoptosis in K562 cells in a dose-dependent manner. After NS-398 treatment, the expression of Bcl-2 protein was downregulated, whereas the expression of Caspase-3 protein was upregulated. Moreover,the activity of Caspase-3 was increased in a dose-dependent way after NS-398 treatment. Conclusion Selective cyclooxygenase-2 inhibitor,NS-398,significantly induced apoptosis in K562 cells. The underlying mechanism might be related to the downregulation of Bcl-2 and the activation of Caspase-3.

Diabetic nephropathy (DN) is one of the chronic diabetic complications,which often leads to chronic renal failure.The diagnosis of DN involves a comprehensive assessment of clinical,pathological and other manifestations.Early diagnosis is rather important for the prevention of DN.

PBL is a modern model of classroom teaching. We have introduced it into the teaching of Microbiology. As a result, the students’ learning abilities have been raised to a higher level, and their learning autonomy and achievement have been improved. The combination of PBL method with traditional teaching methods achieved a good effect.

Objective To analyze the etiology of diabetes ketoacidosis(DKA) in children with type 1 diabetes.Methods Totally 850 person-time of type 1 diabetes children in recent 20 years in our hospital were selected as studied subjects. Two hundred and twenty-five person-time of them were hospitalized because of DKA.Fifty-six cases (131 person-time) were due to recurrent DKA.These patients were classified into 2 groups according to onset time: group 1(diagnosed from 1982 to 1991) and group 2(diagnosed from 1992 to 2001).Results The analysis of recurrent DKA suggested that 71.8 % of them was due to infection, 20.4 % of them did not obey diabetic diet and 9.2 % of them discontinued insulin injection. The etiology of DKA showed no difference in two groups. The number of recurrent DKA in two groups was significantly different (P

【Objective】To observe the hemorrheological changes in lacunar cerebral infarction(LCI) patients with arteriopathy of middle and small arteries.【Methods】The hemorrheological changes of cerebral arteries in 85 LCI patients without arteriopathy of large artery confirmed by cervical vessels color ultrasonography and magnetic resonance image(MRI)were observed by transcranial Doppler ultrasonography(TCD).The correlation of the hemorrheological changes with age and blood pressure(BP) of arteries was investigated.The above indexes were compared with those in 25 healthy volunteers confirmed by encephalography in the same age group.【Results】The mean blood flow rates of cerebral middle,anterior and posterior artery in LCI patients were(62.09?16.90)cm?s~(-1),(50.42?13.11)(cm?s~(-1),)and(32.33?7.55)cm?s~(-1) respectively,lower than(69.65?19.20)cm?s~(-1),(57.75?16.75)cm?s~(-1),and(38.75?8.81)cm?s~(1) respectively in the healthy volunteers(P0.05).【Conclusion】The arteriopathy of small artery in LCI patients can cause the mild decrease of blood flow rate and the increase of pulsating index.There exists a correlation of pulsating index with age and arterial blood pressure.

Humans ; Male ; Osteosarcoma ; complications ; diagnostic imaging ; surgery ; Ultrasonography ; Wounds and Injuries ; complications ; Young Adult

Covered in the paper are the overseas practice to formulate DRGs-PPS payment standards,as well as domestic study on expense-based payment standard and on cost-based payment standard.Comparative studies found problems in formulating the present DRGs-PPS payment standard,and recommended to better the clinical diagnosis and treatment norms based on cost data,and explore to develop a normalized DRGs cost accounting method system.

Aim To study the role of TNF-α/NF-κB signaling in matrix metalloproteinase ( MMP)-9 expres-sion induced by lipopolysaccharide ( LPS ) in airway epithelial cells, and to investigate the effects of lenti-virus mediated RNAi targeting a disintegrin and metal-loproteinase 17 ( ADAM17 ) gene on MMP-9 expression induced by LPS. Methods The ADAM17 siRNA ex-pression vector was constructed, and packaged to re-combinant lentivirus in 293T cells. The HBE4-E6/E7 cells were pretreated for 30 min by NF-κB inhibitor ( PDTC) and a recombinant human TNFR p75-Fc fu-sion protein ( Etanercept) , or infected by the recombi-nant lentivirus for 72 h, and then stimulated for 24 h by LPS or TNF-α. The release of TNF-α was detected by ELISA. The mRNA and protein levels of MMP-9 were analyzed respectively by RT-PCR and Western blot. NF-κB activity was detected by electrophoretic mobility shift assay. Results LPS and TNF-α signifi-cantly increased MMP-9 mRNA and protein expressions and the activation of NF-κB in HBE4-E6/E7 cells ( P<0. 05 ) . Etanercept and PDTC significantly inhibited MMP-9 expression and the activation of NF-κB induced by LPS ( P<0. 05 ) . Lentivirus mediated RNAi targe-ting ADAM17 significantly decreased TNF-α produc-tion, inhibited MMP-9 mRNA and protein expressions and the activation of NF-κB induced by LPS in HBE4-E6/E7 cells ( P <0. 05 ) . Lentivirus mediated RNAi targeting ADAM17 did not inhibit MMP-9 mRNA and protein expressions and the activation of NF-κB in-duced by TNF-α ( P>0. 05 ) . And PDTC significantly inhibited MMP-9 mRNA and protein expressions and the activation of NF-κB induced by TNF-α ( P <0. 05 ) . Conclusions TNF-α/NF-κB signaling partic-ipates in the regulation of MMP-9 expression induced by LPS in airway epithelial cells, and lentivirus-media-ted RNAi targeting ADAM17 plays an important role in that signaling pathway upstream by regulating TNF-αrelease.

China ; epidemiology ; Humans ; Pneumoconiosis ; epidemiology