Interleukin 16

From MEpedia, a crowd-sourced encyclopedia of ME and CFS science and history

Interleukin 16 is a cytokine released by a variety of cells including lymphocytes and epithelial cells expressing the cell surface molecule CD4.

Function[edit | edit source]

It recruits and activates other cells expressing CD4, including lymphocytes, monocytes, and eosinophils.[1]

ME/CFS[edit | edit source]

Landi et al. (2016) found IL-16 to be significantly reduced (downregulated) in long term CFS patients.[2] It is a pro-inflammatory cytokine and the reduction shown may indicate immunodeficiency.
In mice studies low IL-16 is correlated with impaired development of B cells. Most studies into human disease seem to show increases in IL-16 not a decrease (asthma, rheumatoid arthritis, Lupus, MS). The other condition which shows a decrease is HIV and IL-16 may repress HIV-1 replication (Indinavir used in HIV patients increases circulating IL-16). IL-16 has a developmental role in the human immune system. It is also related to neuronal development and may account for brain fog symptoms.

Notable studies[edit | edit source]

  • 2016, Reductions in circulating levels of IL-16, IL-7 and VEGF-A in myalgic encephalomyelitis/chronic fatigue syndrome[2] - (Full text)

See also[edit | edit source]

Learn more[edit | edit source]

References[edit | edit source]