What are NK cells in pregnancy?

The key immune cells that predominantly populate the pregnant uterus are natural killer (NK) cells. In normal pregnancy, these cells are not killers, but rather provide a microenvironment that is pregnancy compatible and supports healthy placentation.

How important are NK cells?

NK cells are best known for killing virally infected cells, and detecting and controlling early signs of cancer. As well as protecting against disease, specialized NK cells are also found in the placenta and may play an important role in pregnancy.

What stimulates natural killer cells?

NK cells are either activated by immunoreceptor tyrosine-based activating motifs (ITAMs) or inhibited by immunoreceptor tyrosine-based inhibitory motifs in their cytoplasmic tails. The development of NK cells in requires interaction between both MHC-I and inhibiting receptors.

What is the treatment for NK cells?

There is no specific treatment for NK cell disorders. Children with the disease will usually require more frequent courses of antibiotics, or other medications to fight off viral or fungal infections. There appears to be evidence to suggest other therapies may enhance immune system functioning.

What autoimmune causes miscarriage?

Antiphospholipid syndrome (APS) is an autoimmune disorder in which a person’s immune system mistakenly makes antibodies to certain substances involved in normal blood clotting. APS is associated with repeated miscarriages and fetal deaths.

What is the role of NK cells in miscarriage?

NK cells may function as immunoregulators, controlling other parts of the immune system through the production of cytokines There is a lot of evidence that natural killer cells are elevated in the bloodstream (and uterus) of women with recurrent miscarriages, but not so much evidence that the NK cells themselves are causing these miscarriages.

Are natural killer cells to blame for recurrent miscarriages?

There is a lot of evidence that natural killer cells are elevated in the bloodsteam (and uterus) of women with recurrent miscarriages, but not so much evidence that the NK cells themselves are causing these miscarriages.

Are natural killer lymphocytes immunophenotypic?

The immunophenotypic attributes of NK cells and NK-cell lineage lymphoproliferative disorders Natural killer (NK) cells are a distinct lymphocyte subset that, like cytotoxic T cells, recognize and destroy abnormal self-cells.

Can elevated NK cells kill a pregnancy?

Scientists have fleshed out a few mechanisms in which elevated NK cells could terminate an otherwise viable pregnancy, usually promoting the idea that a disordered immune system causes the cells to attack the pregnancy.