Influence of early or late dietary restriction on life span and immunological parameters in MRL/Mp-lpr/lpr mice.

AUTOR(ES)

Kubo, C

RESUMO

Reduced food intake doubles and even triples the life span of (NZB X NZW)F1 (B/W) mice and greatly influences of food intake while keeping vitamin and mineral intake constant in mice of the MRL/Mp-lpr/lpr (MRL/l) strain. Restriction of food intake greatly prolongs life. This influence also was seen when dietary restriction was imposed later in life. Dietary restriction inhibited development of lymphoproliferative disease and greatly decreased the numbers of cells in thymus, lymph nodes, and spleen. It also delayed development of glomerulonephritis and maintained certain immunological responses. Proliferative responses to phytohemagglutinin, pokeweed mitogen, or allogeneic spleen cells were maintained in the mice fed a low-calorie diet from 6 wk. Imposing diet at 12 wk had a lesser influence than earlier restriction. These dietary influences did not depress formation of anti-DNA antibodies or circulating immunocomplexes. MRL/l mice show an apparently extremely low production of interleukin 2, and dietary restriction increased the capacity of lymph node cells but not spleen cells to produce this immunomodulator.

Documentos Relacionados

• Stochastic control of anti-Sm autoantibodies in MRL/Mp-lpr/lpr mice.
• Interferon-gamma is required for lupus-like disease and lymphoaccumulation in MRL-lpr mice.
• Inhibition by restricted-calorie diet of lymphoproliferative disease and renal damage in MRL/lpr mice.
• Correction of accelerated autoimmune disease by early replacement of the mutated lpr gene with the normal Fas apoptosis gene in the T cells of transgenic MRL-lpr/lpr mice.
• Loci predisposing to autoimmunity in MRL-Fas lpr and C57BL/6-Faslpr mice.