The immune system has two complementary arms: one is older and seemingly more primitive, called the innate immune system, found in both plants and animals. The second (already many millions of years old!) is the adaptive or antigen-specific immune system, limited to vertebrate animals. The human innate immune system has many cellular elements that include granulocytes, monocytes, macrophages, n...

BACKGROUND The influence of tobacco smoking on the immune system of HIV infected individuals is largely unknown. We investigated the impact of tobacco smoking on immune activation, microbial translocation, immune exhaustion and T-cell function in HIV infected individuals. METHOD HIV infected smokers and non-smokers (n = 25 each) with documented viral suppression on combination antiretroviral ...

Staphylococcus aureus can cause severe life threatening invasive diseases. The principal immune effector mechanism by which humans are protected from Gram positive bacteria such as S. aureus is antigen specific antibody- and complement-dependent opsonophagocytosis. This process can be measured in vitro using the opsonophagocytic antibody assay (OPA), which is a complex assay composed of live S....

The vertebrate innate immune system consists of inflammatory cells and soluble mediators that comprise the first line of defense against microbial infection and, importantly, trigger antigen-specific T and B cell responses that lead to lasting immunity. The molecular mechanisms responsible for microbial non-self recognition by the innate immune system have been elucidated for a large number of ...

aids (acquired immune deficiency syndrome), a result of human hiv (human immunodeficinency virus) infection, is one of the most troublesome world's health problems. extensive researches to find effective drugs for its treatment are running fast in huge capacities. imod (immuno-modulator drug) is the name of an herbal drug that has modulatory effects of immune system. as a goal of this research,...

The role of maternal immune cells in early implantation sites has received special attention from reproductive biologists because immune cells participate in tissue transplant rejection. During normal pregnancy, endometrial immune cells differ from those in blood by subset distribution and appear to be activated but non-destructive of conceptuses. The immune system evolved well before placental...

Background: Pseudomonas aeruginosa, an opportunistic pathogen, is a common cause of healthcare-associated infections in immunocompromised individuals. The rapid emergence of multidrug-resistant strains has made P. aeruginosa infections progressively difficult to treat. In this study we evaluated the effect of a chimeric protein containing a P. aeruginosa PilQ fragment and the PilA disulfide loo...

AIDS (Acquired Immune Deficiency Syndrome), a result of human HIV (Human Immunodeficinency Virus) infection, is one of the most troublesome world's health problems. Extensive researches to find effective drugs for its treatment are running fast in huge capacities. IMOD (Immuno-Modulator Drug) is the name of an herbal drug that has modulatory effects of immune system. As a goal of this research,...