White blood cells in immune system

Stress may alter body’s immune response

In this study at Carnegie Mellon University, they discuss how stress has negative consequences on your immune system and this article explains the scientific reasoning behind this.

Cortisol  helps reduce inflammatory response by binding to the white blood cells. In the people who have undergone longterm stress, they found that there is receptor resistance which leads to unresponsiveness to cortisol-there is enough cortisol, but it won’t bind to receptors of the white blood cells. As a result, not only is the duration for the sickness longer but it seems to be more intense in its symptoms than it would be otherwise. The cytokines are the chemical messengers responsible for producing a response to the inflammation. The people who are stressed and have a lower ablitity of modulating their immune system produce more cytokines, and as a result, they experience greater inflammatory symptoms. The inflammatory  response is not limited to just the flu but  it also plays a role in other infections. However Professor Andrew Lloyd does not want us to draw definitive conclusions from this and says that more studies are necessary in real life situations.

As students, we are almost always undergoing some stress, and I always get some sort of sickness when exams start to approach, so I thought I would share the explanation behind it. Do you guys notice your body becoming extra sensitive to infections when you are the most stressed?

Source: A class blog on science and science journalism

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    May 04, 2011 by haley | Posted in Biology

    Skin cells function primarily in external physical protection, whereas white blood cells function primarily in internal protection, using chemical mechanisms. Nonetheless, both types of cells contain a complete copy of the human genome. Explain how cells can have the same genetic information and yet perform different functions. What prevents skin cells from making all the same proteins of a white blood cell?

    • Simply skin cells work as a sheild or a wall against external harmful micro organism white blood cells are just like warrior they destroy the harmful micro organism present in the body

  • Avatar jake What is the role of macrophages (white blood cells) in the immune system?
    Mar 02, 2009 by jake | Posted in Biology

    • Are derived from monocytes and are phagocytic and there are two types. Macrophages can be divided into normal and inflammatory macrophages. Normal macrophages includes macrophages in connective tissue (histiocytes), l …igen presentation and IL-1 production and nonspecific immunity against bacterial, viral, fungal, and neoplastic pathogens, it is not surprising that macrophages display a range of functional and morphological phenotypes.