This study compared the different leucocyte populations in milk from udders infected with different mastitic pathogens and in different stages of infection. Milk samples were collected from quarters free of intramammary infection, acutely infected with Escherichia coli or Staphylococcus aureus and chronically infected with S. aureus, coagulase-negative staphylococci (CNS) or Streptococcus dysga...

Coculture of resting human B cells with T cells stimulated with immobilized mAb to the CD3 molecular complex induces polyclonal activation and the production of Ig of all isotypes. The current experiments were carried out to determine the nature of the signals provided to B cells by the anti-CD3-activated T cells. For these experiments, fresh T cells or T cell clones were activated with immobil...

To investigate the requirements for adhesion molecules in neutrophil emigration during peritonitis, mice received intraperitoneal injections of Streptococcus pneumoniae while the functions of multiple adhesion molecules were blocked. Emigration after 4 h was compromised by antibodies against ICAM-1 or genetic deficiency of ICAM-1. Anti-CD11a/CD18 antibodies decreased emigration in ICAM-1 mutant...

BACKGROUND Efalizumab is a recombinant humanized IgG1-kappa isotype monoclonal antibody that binds to CD11a, inhibiting T-cell activation. It has been approved for the treatment of moderate to severe plaque psoriasis. Efalizumab has been associated with the development of skin eruptions during the administration period, and this probably represents the potential psoriasis events observed during...

Psoriasis is a recurrent, chronic inflammatory disorder that mainly affects the skin and joints1. In view of the scarcity of studies on peripheral lymphocyte subpopulations in Brazilian psoriasis patients, we performed cytofluorometric analysis of peripheral blood mononuclear cells (PBMC) in psoriatic patients and healthy controls in order to characterize the lymphocyte subpopulations and certa...

Asthma is a prevalent inflammatory disorder of the airway, characterized by immune cell infiltration, epithelial barrier defects, mucous hypersecretion, and obstruction of airflow [1]. In allergic asthma, patients are sensitized to inhaled allergens in a Th2-driven process of allergen-specific IgE production. Subsequent exposures to inhaled allergens result in inflammatory mediator release from...