In this study, we demonstrate that human NK cells, human NK clones, the human NK cell line (NK3.3), and a population of murine NK cells can produce the type 2 cytokine IL-13 in response to IL-2 or phorbol myristate acetate plus ionomycin. IL-2 rapidly induced new IL-13 mRNA and protein synthesis in the NK3.3 cell line. Six of 12 human NK clones tested produced IL-13 protein in response to IL-2 ...

Human interleukin 13 (IL-13) is a cytokine that has a profound effect on primary immune cells by inducing immunoglobulin production, proliferation of B cells, and the differentiation of cells of the monocytic lineage. IL-13 can inhibit the production of inflammatory cytokines by both macrophages and monocytes. Previously, IL-13 expression has been reported only in cells of the T-cell lineage an...

Objectives: In previous studies the therapeutic effects of Nigella sativa have been demonstrated on asthmatic animals. In the present study, the preventive effect of single dose of alpha-hederin, its active constituent, has been evaluated on lung inflammation and some inflammatory mediators in lungs of ovalbumin sensitized rat in order to elicit its mechanism. Materials and methods: Forty rats ...

CCL11/eotaxin-1 is a potent eosinophilic CC chemokine expressed by primary human fibroblasts. The combination of TGF-β1 and IL-13 synergistically increases CCL11 expression, but the mechanisms behind the synergy are unclear. To address this, human airway fibroblast cultures from normal and asthmatic subjects were exposed to IL-13 alone or TGF-β1 plus IL-13. Transcriptional (nuclear run-on) and ...

Background: The overexpression of interferon (IFN)c or interleukin (IL)-13 in the adult murine lung induces the development of changes that mirror human lung emphysema. Methods: IL-13 and IFNc expression was determined in lung samples from five groups of patients: severe emphysema without a1-antitrypsin deficiency (SE+, n = 10); severe emphysema with a1-antitrypsin deficiency (SE2, n = 5); mild...

BACKGROUND The overexpression of interferon (IFN)gamma or interleukin (IL)-13 in the adult murine lung induces the development of changes that mirror human lung emphysema. METHODS IL-13 and IFNgamma expression was determined in lung samples from five groups of PATIENTS severe emphysema without alpha(1)-antitrypsin deficiency (SE+, n = 10); severe emphysema with alpha(1)-antitrypsin deficien...

Interleukin (IL)-1 b stimulates the release of granulocyte macrophage colony-stimulating factor (GM-CSF) from lung epithelial cells. To investigate the molecular mechanisms underlying GM-CSF regulation, we studied GM-CSF production, messenger RNA (mRNA) expression levels, and GM-CSF promoter activity in A549 human alveolar carcinoma cells stimulated with IL-1 b . Coincubation with IL-4 or IL-13...

PURPOSE To investigate the effects of tumor necrosis factor (TNF)-alpha, interleukin (IL)4, and IL-13 on expression of the chemokine eotaxin by cultured human keratocytes. METHODS Cultured human keratocytes were incubated with various combinations and concentrations of TNF-alpha, IL-4, and IL-13. The concentration of eotaxin in the culture supernatant was subsequently measured by enzyme-linke...

Today, the use of oak as a replacement feed in poultry diets is well documented. However, oak contains polyphenol compounds (tannins) as antinutrient factors resulted in limited usage in the poultry rations. Generally, consumption of feeds containing tannin could affect gene expression level of immune system. Therefore, the aim of this study was to investigate the effect of different levels of ...

IL-13 and IL-4 are key contributors to the asthmatic phenotype. The temporal role of these cytokines in airway function, inflammation, and remodeling were assessed in a chronic murine model of Asperigillus fumigatus-induced allergic asthma. IL-13 and IL-4 protein levels were significantly elevated by 30 days after conidia challenge in A. fumigatus-sensitized mice. Furthermore, IL-13Ralpha1 mRNA...