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排序方式: 共有1856条查询结果,搜索用时 15 毫秒
41.
Allogeneic peripheral blood stem cell transplantation in patients with advanced hematologic malignancies: a retrospective comparison with marrow transplantation 总被引:16,自引:10,他引:16
Bensinger WI; Clift R; Martin P; Appelbaum FR; Demirer T; Gooley T; Lilleby K; Rowley S; Sanders J; Storb R; Buckner CD 《Blood》1996,88(7):2794-2800
Allogeneic peripheral blood stem cell (PBSC) transplants from HLA- identical siblings were performed in 37 patients with advanced hematologic malignancies. Outcomes were compared to a historical group of 37 similar patients with advanced hematologic malignancies receiving bone marrow (BM) transplants from HLA-identical donors. The PBSC group and historical BM group were well matched for diagnosis, disease stage, age, and graft-versus-host disease (GVHD) prophylaxis. Patients received PBSC transplants between 1993 to 1995 while BM patients were treated between 1989 to 1994. Engraftment, measured by the time to reach a peripheral neutrophil count > 500/L and platelet count > 20,000/microL without transfusions, occurred on days 14 and 11 in the patients transplanted with PBSC compared to days 16 and 15 in the patients receiving BM (P = .00063, .00014). The PBSC group required a median of 8 U of red blood cells and 24 U of platelets compared to 17 U of red blood cells and 118 U of platelets for BM transplant recipients (P = .0005, .0001). The estimated risks of developing grades 2 to 4 acute GVHD were 37% for the PBSC group and 56% for the BM group (P = .18), while the estimated risks of grades 3 to 4 acute GVHD were 14% for the PBSC group and 33% for the BM group, P = .05). Chronic GVHD occurred in 7 of 18 evaluable patients receiving PBSC and 6 of 23 evaluable patients receiving BM, P = .5. The estimated risks of transplant-related mortality at 200 days were 27% versus 45% (P = .33) relapse were 70% versus 53% (P = .27) and of overall survival were 50% and 41% (P = .39) for patients transplanted with PBSC or BM, respectively. This retrospective comparison suggests that compared to marrow transplantation from HLA-identical donors, allogeneic PBSC transplantation from HLA-identical donors is associated with faster engraftment, fewer transfusions, and no greater incidence of acute or chronic GVHD. 相似文献
42.
MacDonald I; Wang H; Grand R; Armitage RJ; Fanslow WC; Gregory CD; Gordon J 《Blood》1996,87(3):1147-1154
Group I Burkitt lymphoma (BL) cell lines, which retain the original biopsy phenotype, have been shown to enter apoptosis in response to a number of external stimuli including serum deprivation, thermal shock, addition of calcium ionophore, and ligation of surface immunoglobulin (Ig) by antibody. Transforming growth factor-beta 1 (TGF beta 1) is known to cause growth arrest in BL lines. Here we show that while it is by itself capable of promoting some degree of apoptosis in group IBL cells, TGF beta 1 cooperates with anti-immunoglobulin to this end. Trimeric soluble recombinant human CD40 ligand (sCD40L) was able to inhibit apoptosis induced by the combination of agonists to some degree, but such rescue proved to be short-lived. Both TGF beta 1 and anti-Ig individually caused BL cells to undergo growth arrest at the G1 phase of cell cycle before their entry into apoptosis: the consequence of sCD40L addition was to maintain the cells in cycle for longer. No induction of the apoptosis-protecting gene, bcl-2, occurred in the presence of sCD40L. These findings are discussed, particularly highlighting the relationship existing between survival and the cell cycle. The strong cooperative effects observed between anti-Ig and TGF beta 1 in promoting apoptosis and the inability of CD40 to signal for long-term rescue raise the potential for a novel therapeutic attack on B-cell lymphoma. 相似文献
43.
Anuradha Chowdhary Pradeep Kumar Singh Shallu Kathuria Ferry Hagen Jacques F. Meis 《Antimicrobial agents and chemotherapy》2015,59(12):7882-7887
We compared EUCAST and CLSI antifungal susceptibility testing (AFST) methods for triazoles and amphotericin B against 124 clinical Mucorales isolates. The EUCAST method yielded MIC values 1- to 3-fold dilutions higher than those of the CLSI method for amphotericin B. The essential agreements between the two methods for triazoles were high, i.e., 99.1% (voriconazole), 98.3% (isavuconazole), and 87% (posaconazole), whereas it was significantly lower for amphotericin B (66.1%). Strategies for harmonization of the two methods for Mucorales AFST are warranted. 相似文献
44.
Genetic and non‐genetic factors that increase the risk of non‐syndromic cleft lip and/or palate development 下载免费PDF全文
45.
46.
Mitochondria organize themselves as dynamic populations within a cell, by undergoing continuous cycles of fission and fusion. The spatio-temporal distribution and abundance of mitochondria determines the cell’s energy budget and is thus intimately linked to the cell’s response to environmental stimuli during aging. The dynamic balance of mitochondrial fission and fusion can be studied in terms of antagonistic subpopulations that regulate the mitochondrial responses in space and time. The dynamic nature of these processes motivates mathematical modelling and the simulation of such complex process. In several neurodegenerative and metabolic diseases the dynamic balance of fission and fusion is disturbed. However, how this dynamics plays a role in the progression of diseases is largely unclear. Fission and fusion help mitochondria to regulate cellular energy (ATP) levels, and minimize accumulation of harmful oxidized material called reactive oxygen species which accelerate mutations in mitochondrial DNA (mtDNA) during aging. We discuss how systems biology approaches can be used to investigate the mechanisms controlling the fission–fusion dynamics under two categories: dissecting the design of its molecular regulatory motifs, and understanding complex mitochondrial responses through their population level interactions. This will help us to understand how different regulatory mechanisms regulate the ATP and mutation (mtDNA) landscape of mitochondria to a variety of environmental stimuli in order to maintain their function during aging. 相似文献
47.
48.
Roessler S Long EL Budhu A Chen Y Zhao X Ji J Walker R Jia HL Ye QH Qin LX Tang ZY He P Hunter KW Thorgeirsson SS Meltzer PS Wang XW 《Gastroenterology》2012,142(4):957-966.e12
49.
Anuradha PRAKKI Renato CILLI Ian Matos VIEIRA Kristina DUDUMAS José Carlos PEREIRA 《Journal of applied oral science : revista FOB》2012,20(4):472-477
Objectives
To evaluate the effect of additives on the water sorption characteristics of Bis-GMA based copolymers and composites containing TEGDMA, CH3Bis-GMA or CF3Bis-GMA.Material and methods
Fifteen experimental copolymers and corresponding composites were prepared combining Bis-GMA and TEGDMA, CH3Bis-GMA or CF3Bis-GMA, with aldehyde or diketone (24 and 32 mol%) totaling 30 groups. For composites, barium aluminosilicate glass and pyrogenic silica was added to comonomer mixtures. Photopolymerization was effected by 0.2 wt% each of camphorquinone and N,N-dimethyl-p-toluidine. Specimen densities in dry and water saturated conditions were obtained by Archimedes'' method. Water sorption and desorption were evaluated in a desorption-sorption-desorption cycle. Water uptake (%WU), water desorption (%WD), equilibrium solubility (ES; µg/mm3), swelling (f) and volume increase (%V) were calculated using appropriate equations.Results
All resins with additives had increased %WU and ES. TEGDMA-containing systems presented higher %WU, %WD, ES, f and %V values, followed by resins based on CH3Bis-GMA and CF3Bis-GMA.Conclusions
Aldehyde and diketone led to increases in the water sorption characteristics of experimental resins. 相似文献50.