Gelsolin, an 82 kDa actin-binding protein, has potent actin filament-severing activity in vitro. To investigate the in vivo function of gelsolin, transgenic gelsolin-null (Gsn-) mice were generated and found to have normal embryonic development and longevity. However, platelet shape changes are decreased in Gsn- mice, causing prolonged bleeding times. Neutrophil migration in vivo into peritonea...

The abilities of normal mouse peritoneal exudate cells and fluids to mediate in vitro cell adherence reactions to Ascaris suum juveniles were investigated. Exudates were induced by intraperitoneal injection of Sephadex G-25 or by infection with A. suum and changes in the peritoneal cell populations were determined. The presence of a heat-labile component, probably complement, and a heat-stable ...

Neutrophils are professional phagocytes that migrate early, in high number, to the infection sites. Our study has analyzed how neutrophils cross-present antigens and influence CD8+ T-cell responses. By using highly purified neutrophils from peritoneal exudates and bone marrow, we have shown that neutrophils cross-present ovalbumin to a CD8+ T-cell hybridoma and to naive CD8+ T cells from OT1 tr...

abstract: introduction & objective: ferula gummosa boiss (apiaceae) is a perennial plant native to iran and afghanistan. like many plants, this species contains active biological compounds including monoterpenes, alfa pinene and alkaloids which have been demonstrated in phytochemical analysis of different extract of this species. in iranian traditional medicine ferula gummosa has been used in i...

in a preliminary experiment. the protective effects of ' peritoneal macrophages was shown by transferring macroph. ages fr-om adult mice to newborn and to 7 and 14 days old mice. it suckling mice from intraperitoneal infection with mcmv by reducing the mortality rate from 100% to 27%.was demontrated that such transplentatton protect

BACKGROUND Accumulation of pleural and peritoneal fluid is seen in some diseases. In order to diagnose the disease and start the treatment, one of the most important actions will be to differentiate between exudates and transudates. The objective of this study was to determine the diagnostic value of measuring the specific gravity of the fluid through refractometer and strip in differentiation ...

The ability of vitamin A deficient rats to resist infection with P. berghei was investigated. When 10 X 10°erythrocytes bearing the parasite/100 g body weight were given to the vitamin A protein energy undernourished rats, parasitemia developed in these animals at a faster pace than the controls. A high number (60% to 95% ) of red blood cells (RBC) carrying the parasite were noticeable within ...

The role of macrophages in tumor metastasis was examined by using migration of a cloned metastatic Lewis lung carcinoma (LLC) variant, LLC-C4, out of glass capillary tubes as an in vitro model for dissemination of tumor cells from a primary tumor mass. Macrophages, derived from LLC tumors of C57BL/6 mice or from peritoneal exudates of mice given injections of complete Freund's adjuvant, enhance...

background: the water-soluble extract of ganoderma lucidum (reishi) has been used as an immunomodulator to stimulate spleen cells proliferation and cytokine expression. objective: to investigate the effect of ganoderma lucidum (g. lucidum) on cytokine production by mice peritoneal macrophages. methods: mice peritoneal macrophages were prepared by intra-peritoneal injection of 5 ml cold pbs. per...

Classically activated macrophages (CAMphi) have been described as a major effector cell on the host's innate immunities. However, CAMphi are not generated in immunocompromised hosts whose alternatively activated macrophages (AAMphi) predominate. In this study, the mechanism by which AAMphi suppress the ability of resident macrophages (RMphi) to generate CAMphi was investigated. AAMphi were isol...