Nitric oxide (NO) is a molecule required for many physiological functions, produced from L-arginine by NO synthases (NOS). It is a free radical, producing many reactive intermediates that account for its bioactivity. Sustained induction of the inducible form of NOS (iNOS) in chronic inflammation may be mutagenic, through NO-mediated DNA damage or hindrance to DNA repair, and thus potentially ca...

abstract background leukemia is one of the most common tumors in children and it is divided up into two main groups acute and chronic leukemia. the acute leukemia is more prevalent than chronic in children. generally acute type is included acute lymphoid leukemia (all) and acute myeloid leukemia (aml). in this study, patients with leukemia who were admitted in talghani hospital of gorgan were e...

Acute myelogenous leukemia (AML) is a hematological malignancy, which accounts for about 15-25% of childhood's leukemia. Genetic factor is one of the most important predisposing elements in childhood acute leukemia, especially AML. In this case report, a rare presentation of familial AML is presented in three monozygotic triplets. Two were 10 months old, and the other one was 16 months old at p...

tlte usual manifestation of acute promyelocyte leukemia is hemorrliagic tendency hut thrombotic manifestations may dominate the clinical picture. we report a patient with promyelocyte leukemia which presented as thrombotic cerebrovascular accident and responded to all-transretionic acid and chemotherapy.

T-cell acute lymphoblastic leukemia is an aggressive hematologic malignancy which is usuallyassociated with unfavorable prognosis particularly in patients with refractory/relapsed disease.Therefore, development of novel therapeutic strategies is highly required for improving theoutcome of these patients. Although there are several studies evaluating the efficacy of proteasome<...

Background: Acute leukemia is one of the most common types of childhood malignancies and one fourth of malignancies in this age group is acute leukemia. Acute leukemia may be myeloid or lymphoid. Acute lymphoblastic leukemia is characterized with abnormal proliferation of lymphoid cells and symptoms related to this are acute and if disease is not treated appropriately, it progresses rapidly and...

Introduction and aims: Leukemia is a heterogeneous group of hematological disorders that made up several diverse biologically distinct subgroups. the eleventh tenth most common cause cancer morbidity mortality worldwide, respectively. There are insufficient data on parameters counts leukemia in Yemen. This cross-sectional study aims to determine for children with leukemia.

purpose: to report an unusual ocular presentation of a relapse of acute lymphoblastic leukemia. case report: a 9-year-old girl presented with a subconjunctival mass and ipsilateral preauricular lymphadenopathy. she had history of acute lymphoblastic leukemia (all) in remission but had a normal blood cell profile. because of corneal dellen formation and enlargement of the mass over a 2-week peri...