In 31 children with acute leukemia, the proliferative activity of the leukemic marrow cell population as measured by mitotic and labeling indexes varied widely from patient to patient and from one disease stage to another. Leukemic marrow had a small but statistically significant diurnal variation of proliferative activity. Changes in labeling indexes were directly related to changes in the pro...

Ether lipids (EL) and hyperthermia have been shown to possess a relatively selective cytotoxicity to leukemic cells. In this study, the combined effects of EL (ET-18-OCH3, ET-16-NHCOCH3, or BM 41.440) and hyperthermia on the growth of hematopoietic progenitors, myeloid leukemic cell lines, and leukemic cells obtained from patients with acute myeloid leukemia (AML) were examined to determine if ...

Bone marrow specimens from leukemic patients were studied in a 5 year period beginning in 1982 in Children's Medical Center of Teheran,a teaching and referral center for pediatric medicine. The slides were stained by Giemsa-Wright stains, read by at least two persons experienced in bone marrow pathology and classified according to F.A.B. recommendations. Peroxidase or Sudan black-B and P.A...

There are no ideal ways to identify and isolate viable and purified Foxp3(+) regulatory T cells so far. Here we developed a novel procedure for the isolation of highly purified Foxp3(+) cells using flow cytometry. This method relies on an identification and sorting of the lymphoblast cell population identified on a scatter plot using flow cytometry. We confirmed that greater than 98% of the cel...

Nucleic acid hybridization studies were made between 71S-AMV-RNA and DNA from leukemic myeloblasts and from normal chicken cells. There was homology between the viral RNA and chicken cell DNA and to a greater extent between viral RNA and leukemic cell DNA. Leukemic cell DNA hybridized approximately twice as much viral RNA as did normal chicken DNA. Thermal melting studies showed that the viral ...

INTRODUCTION When leukocytes are stimulated by reactive oxygen species (ROS), they release nuclear contents into the extracellular milieu, called by extracellular traps (ET). The nuclear contents are mainly composed of the histone-DNA complex and neutrophil elastase. This study investigated whether leukemic cells could release ET and the released histone could induce endothelial activation, eve...

In B-cell precursor acute lymphoblastic leukemia, the initial leukemic cells share the same antigen receptor gene rearrangements. However, due to ongoing rearrangement processes, leukemic cells with different gene rearrangement patterns can develop, resulting in subclone formation. We studied leukemic subclones and their distribution in the bone marrow and peripheral blood at diagnosis. Antigen...

Different derivatives of imatinib were synthesized by a 3-step reaction method. The structures the new compounds characterized spectroscopic methods. For quantitative evaluation biological activity compounds, MTT assays performed, where four BCR-ABL negative leukemic cell lines (Jurkat, Reh, Nalm-6 and Molt-4), one positive line (K562), non-leukemic (Hek293T) incubated with various concentratio...

Abstract Sesamolin is one of the lignans derived from sesame oil. It has demonstrated significant antioxidant, anti-aging, and anti-mutagenic properties. also reportedly augments natural killer (NK) cell lysis activity. We previously reported that sesamolin exerts anticancer effects in vitro induces enhanced NK cytolytic activity against tumor cells. Herein, we aimed to determine mechanism by w...

Background: Leukemia is a malignant proliferative disorder of the hematopoietic cells. The important role of angiogenesis in leukemia has been reported by several studies. Matrix metalloproteinases (MMPs) are a large group of endopeptidases which degredate the extracellular matrix and play an important role in angiogenesis. Objective: The present study was conducted to evaluate the patterns of ...