Objective To investigate the expression level of CRIF1 in human leukemic Jurkat T-cell line cocultured with primary leukemic bone marrow stromal cells.Methods RT-PCR was used to study the expression level of CRIF1 in human leukemic Jurkat T-cell line cocultured with primary leukemic bone marrow stromal cells in vitro. Results After coculture with leukemic bone marrow stromal cells, the expressions of CRIF1 and Gadd45 mRNA in Jurkat cells were significantly higher than the control.Conclusion High mRNA levels of CRIF1 might be associated with the G0/G1 phage arrest in human leukemic Jurkat T-cell line cocultured with primary leukemic bone marrow stromal cells.

Objective To investigate the effect of on serum and urine MCP -1 secretion in patients with Stage IV Type 2 diabetic nephropathy treated by lipoic acid .Methods We enrolled 76 diabetic nephropathy patients ,who were randomly divided into two groups . Patients in group T (24 males and 14 females) were treated by lipoic acid 0.6 gram per day.Those in group C (22 males and 16 fe-males) were treated by routine drugs.The serum creatinine (Scr), urea nitrogen (BUN), fasting blood sugar(FBS) and 24h urinary pro-tein,serum and urine MCP -1 secretion were measured at the experiment onset and 3 weeks later.Results There was no significant difference in the serum creatinine , urea nitrogen, fasting blood sugar, HbA1c between the two groups neither at the experiment onset nor after 3 weeks.Compared to experiment onset , 24h urine protein (Tp/24h), serum and urine MCP-1 secretion were all significantly de-creased (P<0.05) in group T after 3 weeks.Compared to group C (2.41 ±0.91g/24h, 91.45 ±33.41pg/ml, 114.78 ±36.35pg/ml), all the levers in group T (1.89 ±0.72g/24h, 39.50 ±13.68pg/ml, 63.41 ±19.57pg/ml) was significantly decreased (P<0.05) after 3 weeks.There was a positive correlation between the serum , urine MCP-1 levels and Tp/24h (r=0.572, P<0.05;r=0.697,P<0.05).Conclusion Lipoic acid can reduce urine protein excretion in diabetic nephropathy patients , maybe by decreasing serum and u-rine MCP-1 secretion .

Objective:To observe the effect of emotional resilience training on compassion fatigue and psychological resilience of intensive care unit nurses.Methods:A total of 70 intensive care unit nurses were randomly divided into experiment group and control group, each of 35 cases. Control group nurses were given routine psychological guidance intervention, in addition, the experiment group was carried out 8 weeks of emotional resilience training. The effect of intervention was assessed by Chinese version of the compassion fatigue scale and Connor-Davidson resilience scale before and after intervention.Results:After intervention, the average scores of compassion satisfaction, secondary traumatic stress and total compassion fatigue scores were (26.46±4.99)pionts, (17.80±4.05)pionts and (69.14±5.70)pionts, significantly lower than in the control group (28.86±4.14)pionts, (20.11±4.38)pionts and (75.51±10.32)pionts, the difference was statistically significant ( t value was 2.190, 2.296, 3.197, P<0.05). After intervention, the average scores of tenacity, power, optimism and total resilience scores were (34.23±6.06)pionts, (25.77±5.01)pionts, (14.31±3.22)pionts and (74.31±9.55)pionts, significantly higher than in the control group (30.86±6.23)pionts, (23.31±3.29)pionts, (12.11±2.04)pionts and (66.29±7.28)pionts, the difference was statistically significant ( t value was 2.295-3.956, P<0.05). Conclusion:Emotional resilience training can effectively reduce the compassion fatigue and improve psychological resilience of intensive care unit nurses.

Objective To screen and analyze the differentially expressed genes of Jurkat cells cocultured with bone marrow stromal cells(BMSCs) from leukemia patients.Methods Suppression subtractive hybridization(SSH) was employed to establish subtracted cDNA library of differentially expressed genes in Jurkat cells cocultured with BMSCs from leukemia patients in vitro.The cDNA fragments were sequenced and analyzed.Results The differentially expressed gene cDNA library of Jurkat cells cocultured with BMSCs from leukemia patients in vitro was developed by SSH.Primary screening was done by reverse northern hybridization.Thirty up-regulated and 22 down-regulated cDNA fragments were isolated and sequenced,and sequence homology was performed by BLAST in GenBank.These genes were related to cell cycle regulation,cellular apoptosis and energy metabolism.The information of differentially expressed genes in Jurkat cells implied that their secretion function,cell cycle and apoptosis were affected by BMSCs from leukemia patients.Conclusion BMSCs from leukemia patients might influence gene expression of Jurkat cells.The differentially expressed genes might be significantly associated with the protection of BMSCs from leukemia patients on Jurkat cells during Daunorubicin exposure.

0.05) while that in groups A and C differed from group B ( P

Objective To investigate the optimal condition for culturing human umbilical cord blood-derived stromal cells(hUCBDSCs),and to observe their biological behaviors.Methods The umbilical cord blood was obtained from the Department of Obstetrics of the authors' hospital.The influence on the growth of hUCBDSCs was determined by the isolation method,the medium and the time of renewal of first medium were analyzed.The status of cell growth was observed under inverted microscope and the morphological characters were studied with the cells stained by Wright's staining.The hUCBDSCs were identified by cytochemistry and immunocytochemistry methods.Results The gelatin precipitation was better than other techniques for isolation.The optimal time for first medium renewal was the fourth day of culturing,and the improved Dexter-type cultural system was better than the classical Dexter-type cultural system in primary culture.The colonies of adherent cells began to form in 9-14 days(with a median of 12.1 days),and the number of colonies reached it maximum in 15-21 days(mean 19.4 days).On day 28,adherent cells spread all over the bottom of dish.On day 28 of culturing,these cells were found under light microscopy to have differentiated into three kinds of cells: fibroblast-like cells,macrophage-like cells and small-round cells.Cytochemistry assay revealed that the positive rate reached 100% with non-specific esterase(NSE) and saccharogen(PAS) staining.26% of the hUCBDSCs were positive with alkaline phosphatase(ALP) staining,but negative with peroxydase(POX) staining.Immunocytochemistry staining revealed that the positive rates of hUCBDSCs for CD31,CD68 and Fn were 96% and 95%,and 94% respectively,and for CD45 was 0%.Conclusion The hUCBDSCs could be successfully cultured in vitro,and it sets a foundation for further study on the clinical application of hUCBDSCs.

Objective To investigate the effects of thrombopoietin (TPO) on the proliferation of megakaryocytic line-HEL cells co-cultured with human umbilical cord blood-derived stromal cells (hUCBDSCs), which is supposed to further elucidate the mechanism of TPO-mediated functions. Methods HEL cells were co-cultured with hUCBDSCs, and with human bone marrow stromal cells (hBMSCs), and suspended HEL was used as control. HEL The concentration of TPO in supernatant of hUCBDSCs and hBMSCs was detected by ELISA assay. The expression of c-Mpl membrane-bound protein of HEL cells was detected by laser scanning confocal microscopy and flow cytometry, and the expression of c-Mpl mRNA was detected by RT-PCR. Results It was revealed by ELISA assay that the concentration of TPO secreted by hUCBDSCs was higher than that by hBMSCs, even though the passage was done. The secretion peak in hUCBDSCs group appeared at the 8th day of culturing, somewhat delayed to that in hBMSCs group which the peak appeared at the 6th day. The expression of C-mpl protein displayed uniform green fluorescence on the surface of HEL cell line as determined by laser confocal microscopy, and mean fluorescence intensity detected by flow cytometry was 22.19?2.15, 29.65?0.82 and 37.43?1.69 in HEL suspended culture group, HEL/hBMSCs co-culture group and HEL/ hUCBDSCs co-culture group, respectively. The expression of C-mpl protein in HEL/ hUCBDSCs co-culture group was higher than that in the two other groups (P0.05). Conclusion TPO-pathway might be the important intermediate process for hUCBDSCs to promote megakaryocyte proliferation. The promotion as such may be realized by up-regulating the c-Mpl expression in translation or post-translational modification phase.

Objective To explore the robe of interleukin-6 in the apoptosis of multiple myeloma (MM) cell lines KM_3 induced by melphalan and its molecular mechanism. Methods Apoptosis was confirmed by flow cytometry, DNA fragmentation rate and TUNEL. The expression of caspase-3, caspase-8 proteins in KM_3 cell, which was assessed by Western blot analysis, after melphalan treatment and cultured with or without interleukin-6. Results KM3 cells in the presence of interleukin-6 showed lower rate of apoptosis compared with that in the absence of interleukin-6 (P

Objective To observe biological character iistcs of cultivated cornea limbal epithelial cells of rabbit.Methods Cultivated cornea limbal epithelial cells with tissue inoculation were observed by inverted microscope every two days; ultrastructure of cell was observated by electron microscope; Proliferative ability of cell was examined by flow cytometry; the cell growth curve was examined by monotetrazolium(MTT) colorimetry.Results Cultivated limbal cornea epithelial cells formed monolayer at six day,the cultivated conea limbal epithelial cells had high metabolism and proliferative ability, growth of cornea limbal epithelial cells reached climax after 4 days by passage culture. Conclusion Cultivated limbal epithelial cells during the first and second growth generation can keep cornea epitheliam property and high proliferative ability.

Objective To study the influence of bone marrow microenvironment on leukemic cells during chemotherapy and the influence on leukemic cells' drug-resistance and anti-apoptosis. Methods Normal bone marrow stromal cells were isolated using Percoll, and then were cocultured with human acute lymphocyte leukemic cell line Jurkat cells in vitro. Apoptosis percentage of Jurkat cells labelled with Annexin V/PI were detected by FCM. Results Apoptosis percentage of Jurkat cells cocultured with bone marrow stromal cells for 24 hours was lower than those maintained in suspension (P