CD45 deficiency causes a rare form of T-B+NK+ SCID which has been reported in a small number of patients. Patients typically present with a classic SCID phenotype during infancy (FTT, opportunistic infections, oral candidiasis, and severe viral infections). Laboratory findings include a decreased absolute lymphocyte count and total T cell count.

3 天之前 · CD45 expression is consistently seen in most hematopoietic neoplasms and it is considered a specific marker when investigating neoplasms of unknown primary origin; however, CD45 can be negative in a subset of hematopoietic neoplasms.

分支实质小胶质细胞已证实具有 CD11b+、CD45low 表型 (Ford et al., 1995; Becher & Antel 1996)，而其他中枢神经系统巨噬细胞和外周巨噬细胞表现为 CD11b+、CD45high 表型（图 1 和 2）。 图 1：小胶质细胞表达 CD45。 从 5 日龄新生大鼠中提取的小胶质细胞（mic）表达 CD45，如先前所述 (Kingham et al., 1999; Hooper et al., 2005)。 分离小胶质细胞并培养 24 小时。 随后收集并固定细胞，然后通过流式细胞术并利用抗 CD45 (ab8216) 进行分析。 黑色阴影 …

CD45 (lymphocyte common antigen) is a receptor-linked protein tyrosine phosphatase that is expressed on all leucocytes, and which plays a crucial role in the function of these cells. On T cells the extracellular domain of CD45 is expressed in several different isoforms, and the particular isoform(s) …

2018年3月1日 · Our data suggest an overall pro-phagocytic and protective role for CD11b + CD45 high CNS MPs in neurodegeneration, which if promoted, could be beneficial. We demonstrate that CD11b + CD45 high cells, unlike CD45 low microglia, have a unique high capacity for phagocytosing amyloid β fibrils.

We found four CD45 expression patterns: very low in typical CLL; relatively low in MCL; intermediate intensity in MZL, LPL, and FL; very high expression in HCL. Among the atypical cases, very high CD45 expression was found in one case of CD23-negative CLL, in CD23-positive MCL, and CLL with atypical morphology.

2018年7月9日 · We found that the CD45 + CD33 low CD11b dim MDSCs exhibited a CD66b neutrophilic phenotype, and that increased frequencies correlated with tumor stage and decreased overall survival in GC...

cd45正常值一般小于5个/μL，如果患者的数值偏低，可能是营养不良、药物作用等原因引起的，一般及时就医，积极配合医生治疗，可以达到正常的范围。 2.严重. 如果患者cd45的数值过于低，可能是再生障碍性贫血、系统性红斑狼疮等原因引起的，若不积极治疗，可能还会引发肿瘤、白血病等症状，这种情况一般比较严重，建议及时就医进行治疗，有助于身体恢复。 cd45是一种细胞毒性T淋巴细胞抗原受体，一般情况下，cd45偏低是否严重，需要根据具体情况判断，可能不严 …

Very low levels of CD45 expression were significantly associated with lack of CD38 expression, absence of trisomy 12, and with increased treatment free survival time. Altogether, these results demonstrate that low levels of CD45 expression are specific to CLL cells and reflect cell fragility, suggesting that this is an important intrinsic ...

2023年9月15日 · CD45属于细胞毒性t淋巴细胞抗原受体，如果提示数值偏低，可能存在病毒感染、再生障性贫血、系统性红斑狼疮 、白血病、其他肿瘤等。 1.病毒感染： 例如感染流行性感冒病毒、EB病毒等，均可能会使CD45偏低，白细胞指数偏高，病毒反复刺激机体，会引起全身酸软乏力、发热等。 2.再生障碍性贫血： 是贫血的一种，与骨髓造血功能有关，若体内有出血倾向，未及时治疗，也会间接影响CD45，使指数明显下降，常伴有面色苍白、身体乏累、骨髓抑制等症 …