Plasma immunoglobulin levels of humans under high altitude stress

Abstract

Studies have been carried out on plasma IgG, IgA, IgM and IgD levels of 20 male Indian sea level dwellers at sea level and at a high altitude (3658 m). An increase in plasma IgG, IgA and IgD levels with no change in IgM were observed under high altitude stress in comparison to the sea level base data. On return of the subjects from high to sea level, IgA and IgD levels, but not the IgG, reverted to the values observed at the initial sea level conditions.