OBJECTIVE The role of myeloid cell cyclooxygenase-2 (COX-2) in the progression of atherosclerosis has not been clearly defined. METHODS AND RESULTS We investigated the role of COX-2 expressed in the myeloid lineage in the development of atherosclerosis using a myeloid-specific COX-2(-/-) (COX-2(-M/-M)) mouse on a hyperlipidemic apolipoprotein (apo) E(-/-) background (COX-2(-M/-M)/apoE(-/-)). ...

Myeloid-derived suppressor cells (MDSCs) are frequently defined as a heterogeneous population of immature cells belonging to the myeloid lineage which possess strong immunosuppressive activities. These cells ultimately derive from myeloid progenitors mainly present in the bone marrow that undergo a dysregulated differentiation pathway, ending up with the systemic mobilization of MDSCs of “monoc...

the significance of immunophenotyping is growing day by day. it provides basic information in regard to classification and prognosis of acute leukemia which helps the management of patients. this study was conducted to identify cd markers in leukemic patients admitted to tabriz, in northwestern iran. immunophenotyping of 60 patients with acute leukemia was determined. patients with acute myelog...

We investigated the NPM1 mutation status or subcellular expression of NPM protein (nuclear vs. aberrant cytoplasmic) at diagnosis and relapse in 125 patients with acute myeloid leukemia from Italy and Germany. All 52 patients with acute myeloidleukemia carrying at diagnosis mutated or cytoplasmic NPM (NPMc(+) acute myeloid leukemia) retained this feature at relapse. Notably, cytoplasmic mutated...

Malignant gliomas are lethal cancers in the brain and heavily infiltrated by myeloid cells. Interleukin-4 receptor-α (IL-4Rα) mediates the immunosuppressive functions of myeloid cells, and polymorphisms in the IL-4Rα gene are associated with altered glioma risk and prognosis. In this study, we sought to evaluate a hypothesized causal role for IL-4Rα and myeloid suppressor cells in glioma develo...

The function of human myeloid derived suppressor cells (MDSCs) cannot be precisely measured without the proper identification of homogeneous populations. Indeed, many published accounts of human MDSCs are really describing multiple distinct populations confused either by sample processing, poor gating strategies, and/or lack of appropriate cell surface markers. To improve the standardization of...

Although central nervous system-resident microglia are believed to be ineffective at phagocytosing and clearing amyloid-β (Aβ), a major pathological hallmark of Alzheimer's disease (AD), it has been suggested that peripheral myeloid cells constitute a heterogeneous cell population with greater Aβ-clearing capabilities. Here, we demonstrate that the conditional ablation of resident microglia in ...

Vascularization is an important factor that affects diabetic wound healing. There is increasing evidence that myeloid cell lineages play a role in neovascularization. In this study, the efficiency of Gr-1+CD11b+ myeloid cells to home to the site of injury and enhance diabetic wound healing by neoangiogenesis after intravenous administration was investigated. Gr-1+CD11b+ myeloid cells were injec...

Since the first description of dendritic cells (DCs) by Steinman and Cohn (1973), the myeloid lineage of leukocytes was investigated intensively. Nowadays it is obvious that myeloid cells, especially DCs, are crucial for the adaptive and innate immune response against intracellular pathogens such as Leishmania major parasites. Based on the overlapping expression of molecules that were commonly ...

background: leptin has been implicated in the differentiation and proliferation of hematopoietic cells. leukemia inhibitory factor (lif) may play an important role, along with interleukin-6 (il-6) and granulocyte colony stimulating factor (g- csf), in the regulation of early hematopoietic stem cells. the aim of the study was to evaluate serum level of leptin, lif, and il-6 in myeloid leukemia p...