Scorpion venom toxicity is of major concern due to its influence on human activities and public health. We investigated the in-vitro process of cell death caused by two Iranian scorpions Odontobuthus doriae and Bothutus salceyi venom on human cell lines. The aim of this study was to provide further information about triggering cell death and suggestion of methods for the elimination of unwanted...

Background: Many features of anticancer drugs, including cytotoxicity and/or cytokine induction, are studied using cell lines orhuman blood leukocytes. However, in a disease such as multiple myeloma, most cancerous cells are resided within bone marrowmononuclear cells. In the present study, we investigated the effect of pomalidomide on apoptosis and IL-2 production of bonemarrow mononuclear cel...

Recombinant human tumor necrosis factor (rHTNF) alone had no effect on L929 tumor cells at 100 units/ml for 20 h of continuous exposure. However, under the same conditions, rHTNF markedly enhanced the cytotoxicity of Adriamycin, actinomycin D, 4'-(9-acridinylamino)-methanesulfon-m-anisidide, teniposide (VM 26), and etoposide (VP 16), all targeted at DNA topoisomerase II. The rHTNF had a minimal...

High consumption of dietary flavonoids might contribute to a reduction of cancer risks. Quercetin and its glycosides have PARP inhibitory effects and can induce selective cytotoxicity in BRCA2-deficient cells by synthetic lethality. We hypothesized that common flavonoids in diet naringenin, hesperetin and their glycosides have a similar structure to quercetin, which might have comparable PARP i...

Natural killer cell activity, which represents the spontaneous cytotoxicity of lymphocytes toward tumor cells, has been measured in 173 tumor-bearing patients and 25 healthy volunteers; no significant difference was found in mean natural killer cell activity between the two groups. The parameters of interferon-induced activation of natural killer cells were studied in order to provide a suitabl...

The effect of the antineoplastic agent c/s-diamminedichloroplatinum(ll) (c/s-DDP) on spontaneous cytotoxicity of human mononuclear cells in vitro was assessed. c/s-DDP enhanced spontaneous monocyte-mediated cytotoxicity 300% compared to control values. Further, this spontaneous monocyte killing developed earlier (3 to 4 days) than did that of untreated cells (5 to 7 days). Since monocyte cytoto...

Introduction: The objective of this work was to investigate the therapeutic effect of a combination of hyperthermia at 43oC exposured for 20, 40, 60 min with 6MeV electron beams at different radiation doses (2, 4, 6 Gy) compared to radiation alone.   Materials and Methods: In this in vitro study, HeLa cells were exposed to either: 6MeV electron beams at diffe...

Cytotoxicity assays using cell cultures may be an alternative to assess biological toxicity of plant extracts with potential phytotherapeutic properties. This study compared three methods to prepare culture media for the exposure of Vero cells to plant extracts. Leaves of Glandularia selloi (Spreng.) Tronc. were used to prepare culture medium with aqueous extract, extract in culture medium and ...

Gemtuzumab ozogamicin (GO) is a novel immunoconjugate therapy for acute myeloid leukemia (AML). P-glycoprotein (Pgp) confers resistance to GO and is associated with a worse clinical response. To address whether multidrug resistance protein (MRP) affects GO susceptibility, we characterized Pgp, MRP1, and MRP2 expression in CD33+ cell lines and CD33+ AML samples and analyzed the effect of the Pgp...

Mycophenolic acid (MPA) is the active metabolite of mycophenolate mofetil. This study designed to investigate the mechanism of cytotoxicity of MPA on the genetically engineered PC12 Tet Off (PTO) neuronal cells with p53 gene. Alamar Blue (AB) reduction showed concentration-dependent cytotoxicity of MPA on PTO cells with IC50 value of 32.32 ± 4.61 mM. The reactive oxygen species (ROS) generation...