Women Age Twice as Fast During Perimenopause
Antibodies are one of the main weapons in our arsenal for the eternal war against pathogens. They are an elaborate tool that can specifically recognise any foreign structure in our body. After binging to a foreign object, antibodies have to activate proper molecular mechanisms to deal with this foreign, non-self, object. If this non-self antigen is a pathogenic virus or a bacterium, it has to be eliminated in the most efficient way. However, if this foreign antigen is a food we eat, dust, or some being antigen in the air, then this antigen should be ignored, and activation of the immune system should be avoided.
A big part of this decision process is executed by the addition of different glycans to antibodies in a process called alternative glycosylation. This enables flexible and dynamic regulation of antibody function and is extensively used to fine-tune our immune system. Dozens of genes work together in this complex process that is also affected by many other factors, including hormones.
By analysing IgG glycome in 1,940 female twins at multiple time points researchers discovered that ageing of the IgG glycome is particularly prominent during the perimenopause when women transition from regular hormonal cycles to menopause. This is just an initial discovery, but it calls for further research in this direction since changes in GlycanAge glycome and consequential increase in low-grade chronic inflammation may be one of the molecular mechanisms behind increased health risks associated with menopause.
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