The experiment “Tardigrades in Space – TARDIKISS” investigated the effects of the permanence in space of small animals (tardigrades), as representatives of multicellular organisms (1,2). TARDIKISS was part of a set of multidisciplinary experiments on board of STS-134 space flight, the last of the shuttle Endeavour (3). The responses to flight conditions of two anhydrobiotic species (Paramacrobiotus richtersi and Ramazzottius oberhaeuseri) were compared. The experiment units were hosted into the Biokon (by Kayser Italia), integrated on Middeck Locker of ISS and flown for 16 days at LEA. Other than the Flight samples (F), two sample sets were used as controls: Laboratory Control (LC) maintained in Modena lab, and Temperature Control (TC) a post-Flight control using the flight temperature profile. For both species, the flight animals did not show differences in survival with regard to LT and TC animals, with the exception between F and TC samples of R. oberhaeuseri (3). In lab, females of P. richtersi from F, LC and TC samples laid eggs which were able to hatch and newborns, when adult, exhibit the capability to reproduce. A comparative analysis of the antioxidant defence between F and TC samples showed no differences between the two groups, with the exception of the peroxidase activity for which a significant increase were evidenced in P. richtersi flight sample. Instead, significant differences were recorded in the activities of antioxidant molecules between the two flight species. In conclusion, microgravity did not significantly affect tardigrade survival and oxidative stress, confirming that tardigrades represent a useful animal tool for space research.
|Titolo:||TARDIGRADES: MULTICELLULAR ORGANISMS ON BOARD OF THE INTERNATIONAL SPACE STATION|
|Data di pubblicazione:||set-2013|
|Settore Scientifico Disciplinare:||Settore BIO/10 - Biochimica|
|Citazione:||TARDIGRADES: MULTICELLULAR ORGANISMS ON BOARD OF THE INTERNATIONAL SPACE STATION / L. Rebecchi, T. Altiero, R. Guidetti, G. Montorfano, M. Cesari, R. Bertolani, A.M. Rizzo. ((Intervento presentato al convegno ELGRA BIENNAL SYMPOSIUM tenutosi a Città del Vaticano nel 2013.|
|Appare nelle tipologie:||14 - Intervento a convegno non pubblicato|