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排序方式: 共有233条查询结果,搜索用时 15 毫秒
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A phase I study of bolus versus continuous infusion of the anti-CD19 immunotoxin, IgG-HD37-dgA, in patients with B-cell lymphoma 总被引:2,自引:1,他引:2
Stone MJ; Sausville EA; Fay JW; Headlee D; Collins RH; Figg WD; Stetler- Stevenson M; Jain V; Jaffe ES; Solomon D; Lush RM; Senderowicz A; Ghetie V; Schindler J; Uhr JW; Vitetta ES 《Blood》1996,88(4):1188-1197
IgG-HD37-SMPT-dgA is a deglycosylated ricin A chain (dgA)-containing immunotoxin (IT) prepared by conjugating the monoclonal murine (MoAb) anti-CD19 antibody, HD37, to dgA using the heterobifunctional hindered disulfide linker, N-succinimidyl-oxycarbonyl-alpha-methyl-alpha-(2- pyridyldithio) toluene (SMPT). In this report, we have used two regimens for the administration of IgG-HD37-SMPT-dgA to patients with non-Hodgkin's lymphoma (NHL) in two concomitant phase I trials. One trial examined four intermittent bolus infusions administered at 48- hour intervals. The other studied a continuous infusion (CI) administered over the same 8-day period. In the intermittent bolus regimen, the maximum tolerated dose (MTD) was 16 mg/m2/8 d and the dose- limiting toxicity (DLT) consisted of vascular leak syndrome (VLS), aphasia, and evidence of rhabdomyolysis encountered at 24 mg/m2/8 d. Using the CI regimen, the MTD was defined by VLS at 19.2 mg/m2/8 d. At the MTD of both regimens, a novel toxicity, consisting of acrocyanosis with reversible superficial distal digital skin necrosis in the absence of overt evidence of systemic vasculitis, occurred in 3 patients. Of 23 evaluable patients on the bolus schedule, there was 1 persisting complete response (CR; > 40 months) and 1 partial response (PR). Of 9 evaluable patients on the continuous infusion regimen, there was 1 PR. Pharmacokinetic parameters for the bolus regimen at the MTD showed a mean maximum serum concentration (Cmax) of 1,209 +/- 430 ng/mL, with a median T1/2 beta for all courses of 18.2 hours (range, 10.0 to 80.0 hours), a volume of distribution (Vd) of 10.9 L (range, 3.1 to 34.5 L), and a clearance (CL) of 0.45 L/h (range, 0.13 to 2.3 L/h). For the CI regimen at MTD, the mean Cmax was 963 +/- 473 ng/mL, with a median T1/2 beta for all courses of 22.8 hours (range, 24.1 to 30.6 hours), a Vd of 9.4 L (range, 4.4 to 19.5 L), and a CL of 0.32 L/h (range, 0.12 to 0.55 L/h). Twenty-five percent of the patients on the bolus infusion regimen and 30% on the CI regimen made antibody against mouse Ig (HAMA) and/or ricin A chain antibody (HARA). We conclude that this IT can be administered safely and that both regimens achieve comparable peak serum concentrations at the MTD; these concentrations are similar to those achieved previously using other regimens with IgG-dgA ITs at their respective MTDs. Thus, toxicity is related to the serum level of the IT and does not differ with different targeting MoAbs. 相似文献
77.
Characterization of 13 novel band 3 gene defects in hereditary spherocytosis with band 3 deficiency 总被引:8,自引:3,他引:8
Jarolim P; Murray JL; Rubin HL; Taylor WM; Prchal JT; Ballas SK; Snyder LM; Chrobak L; Melrose WD; Brabec V; Palek J 《Blood》1996,88(11):4366-4374
Hereditary spherocytosis (HS) is a common hemolytic anemia of variable clinical expression. Pathogenesis of HS has been associated with defects of several red cell membrane proteins including erythroid band 3. We have studied erythrocyte membrane proteins in 166 families with autosomal dominant HS. We have detected relative deficiency of band 3 in 38 kindred (23%). Band 3 deficiency was invariably associated with mild autosomal dominant spherocytosis and with the presence of pincered red cells in the peripheral blood smears of unsplenectomized patients. We hypothesized that this phenotype is caused by band 3 gene defects. Therefore, we screened band 3 DNA from these 38 kindred for single strand conformational polymorphisms (SSCP). In addition to five mutations detected previously by SSCP screening of cDNA, we detected 13 new band 3 gene mutations in 14 kindred coinherited with HS. These novel mutations consisted of two distinct subsets. The first subset included seven nonsense and frameshift mutations that were all associated with the absence of the mutant mRNA allele from reticulocyte RNA, implicating decreased production and/or stability of mutant mRNA as the cause of decreased band 3 synthesis. The second group included five substitutions of highly conserved amino acids and one in-frame deletion. These six mutations were associated with the presence of comparable levels of normal and mutant band 3 mRNA. We suggest that these mutations interfere with band 3 biosynthesis leading thus to the decreased accumulation of the mutant band 3 allele in the plasma membrane. 相似文献
78.
MJ Welck P Vetpillai V Balaji R Jennings WD Goodier 《Annals of the Royal College of Surgeons of England》2013,95(1):e5-e6
We detail the unusual occurrence of successive episodes of diabetic myonecrosis in both lower and upper limbs in a young woman with diabetic end organ dysfunction. We highlight the importance of recognising this as a differential diagnosis for acute limb pain in diabetic patients and advocate conservative measures for successful treatment and return to function. 相似文献
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涤纶补片在颈动脉内膜剥脱术中的常规应用 总被引:1,自引:0,他引:1
目的:颈动脉内膜剥脱术是防治颅外颈动脉硬化生度狭窄致缺血性脑中风的标准方法,如何预防术后颈动态再狭窄的发生是该手术的关键。本拟对术中常规应用Hema Carotid涤纶补片对内膜剥脱后颈动脉行成形关闭作一些探讨。方法:将58例德国患行标准的颈动脉内膜剥脱术,对术中及术后近期并发症作一总结。结果:围手术期患死亡率及中风率是0%,术后发生一过性脑缺血的患人数是2例(3.45%),但未发现急性颈动脉闭塞,与手术操作有关的并发症是2例(3.45%)。结论:术中常规应用涤纶补片是颈动脉内膜剥脱术手术成功防止术后颈动脉再狭窄的关键步骤,对于国内开展该手术有一定借鉴。 相似文献