Light-dark shifting

1. Light-dark shifting shortens lifespan in flies (-9.6%).

   “the life span of fruit flies was shortened by 9.6% by photoperiodic shifting”

   Model organismsphotoperiodic shifting

   Influences of light-dark shifting on the immune system, tumor growth and life span of rats, mice and fruit flies as well as on the counteraction of melatonin

   Biological signals·1 Jan 1997

1. Light-dark shifting increases tumor growth in mice.

   “acceleration of tumor growth and depression of the immune system were recorded in the LD-shifted animals”

   Animalsin Ehrlich-carcinoma- or sarcoma-180-injected mice

   Influences of light-dark shifting on the immune system, tumor growth and life span of rats, mice and fruit flies as well as on the counteraction of melatonin

   Biological signals·1 Jan 1997

1. Light-dark shifting decreases blood leukocyte concentration in rats (-48%).

   “decreased the blood leukocyte concentration by 48%”

   Animalsalternating photoperiod of LD 14:10 and DL 10:14 every 3 daysblood

   Influences of light-dark shifting on the immune system, tumor growth and life span of rats, mice and fruit flies as well as on the counteraction of melatonin

   Biological signals·1 Jan 1997

More on Blood leukocyte concentration