The production of acute phase cytokines, interleukin 6 (IL-6), tumour necrosis factor (TNFalpha) and interleukin 1 (IL-1beta), was studied in primary cultures of human skin fibroblasts, human monocytic cell line U937 and primary cultures of human umbilical vein endothelial cells (HUVEC) after in vitro infection with vaccinia virus. Significant increase in IL-6 mRNA followed by enhanced protein ...

Numerous studies have demonstrated that pseudolaric acid B (PAB) promotes apoptosis in several cancer cell lines. However, thus far, the effect of PAB on human leukemia cells has not been evaluated. In the present study, the antitumor activity and molecular mechanisms of PAB in human leukemia U937 cells were investigated. It was demonstrated that PAB induced U937 cell apoptosis, which was confi...

The human amniotic membrane known as the innermost single epithelial-covered layer provides many applications such as applicable anti-inflammatory and anti-cancer effects. These immunomodulatory effects belongs to the epithelial cells, a type of epiblast-derived fetal stem cells which currently used for regenerative medicine and transplantation. These cells are collected by author-prepared faci...

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 ...

Background and Aims: Nitric oxide (NO) has an essential role in inflammation and has been related to pathogenesis and the progress of numerous inflammatory-based diseases, including some cancers. Peganum harmala (P. harmala) is a medicinal plant used for the treatment of numerous diseases such as several infections. Also, anti-inflammatory effects of P. harmala extracts and its derivatives (har...

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 ...

The effects of natural and recombinant human gamma-interferon (IFN-gamma) on mouse monoclonal antibody-dependent cellular cytotoxicity (ADCC) mediated by U937 human monocytic-like cells were examined. The efficiency of mouse monoclonal antibody of different isotypes in inducing ADCC was also compared. The number of receptors for the Fc portion of immunoglobulin G (IgG) (FcR) for mouse IgG2a and...

The aimed of this study was to evaluate curcumin as anticancer agent. The apoptogenic and Cytotoxic activity of curcumin were investigated against two human leukemic cell lines-U937 and Molt4. Cytotoxic activity was performed by using [3-[4, 5-dimethylthiazol-2yl] 2, 5 diphenyltetrazolium bromide] MTT assay. Also 4, 6-diamidino-2-phenylindole di-hydrochloride [DAPI] staining was used as a DNA-b...

Chlorogenic acid exists widely in edible and medicinal plants and acts as an antioxidant. It is known to exert antitumor activity via induction of apoptosis in many human cancer cells. However, its signaling pathway in human leukemia cells still remains unclear. Therefore, we investigated the roles of reactive oxygen species (ROS), mitochondria and caspases during chlorogenic acid-induced apopt...