Depletion of sex hormone production by surgical removal of the ovaries significantly lessened activation of microglia — the brain’s immune cells —as well as neuroinflammation and nerve cell damage in female mice with induced neuromyelitis optica spectrum disorder (NMOSD)-like disease, a study shows. Similar effects were found in castrated…
Causes
Low vitamin D levels, certain infections, and specific dietary habits may increase the risk of developing neuromyelitis optica spectrum disorder (NMOSD). That’s according to the findings of a systematic review that analyzed data from 50 studies involving more than 21,000 people worldwide. Certain modifiable factors, such as diets high…
The gut hormone GLP-1 may contribute to brain inflammation in people with neuromyelitis optica spectrum disorder (NMOSD), leading to episodes of uncontrollable nausea, vomiting, or hiccups — a condition known as area postrema syndrome (APS), a new study suggests. These findings raise a crucial question about the use of…
Shingles is caused by an infection of the varicella-zoster virus (VZV), but in rare cases, it may trigger neuromyelitis optica spectrum disorder (NMOSD), a new study reports. The study’s researchers said clinicians should look for possible signs of NMOSD in patients being treated for shingles, even though developing NMOSD…
Children with neuromyelitis optica spectrum disorder (NMOSD) who live in disadvantaged socioeconomic neighborhoods are more likely to have more severe disease-related disabilities, a study in the U.S. indicates. Two years after a diagnosis, Black pediatric patients had significantly more severe disability, as assessed with the standard Expanded Disability Status…
The composition of bacteria in the gut is altered in neuromyelitis optica spectrum disorder (NMOSD) patients experiencing disease relapses compared with healthy people in the same household, a study reports. Following treatment, however, the gut bacterial profiles of NMOSD patients in remission resembled those of healthy people. “The…
The risk of losing income increases dramatically within a few years after the onset of neuromyelitis optica spectrum disorder (NMOSD) in patients positive for antibodies against aquaporin-4 (AQP4), compared with the general population. That’s according to a nationwide study in Denmark that also showed AQP4-related NMOSD was strongly associated…
Women with elevated blood levels of the sex hormone progesterone have an increased risk of developing neuromyelitis optica spectrum disorder (NMOSD), according to a study that analyzed genetic variants associated with sex hormone levels. In a reverse analysis, having NMOSD appeared to lower testosterone and increase the sex hormone-binding…
People with neuromyelitis optica spectrum disorder (NMOSD) have significantly lower vitamin D levels in their blood than do healthy individuals, according to a meta-analysis of data from studies covering more than 900 people in Asia. While the findings don’t prove that vitamin D deficiency causes NMOSD, they call attention…
International research has uncovered a series of immune-related events that might contribute to the abnormal immune responses against the aquaporin-4 protein (AQP4), which drives neuroinflammation in cases of neuromyelitis optica spectrum disorder (NMOSD). Among the implicated immune cell types are natural killer T-cells (NKT), which seem to be first…
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