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Validation of Procedures for Monitoring Crewmember Immune Function

By Crucian, Brian

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Book Id: WPLBN0004308396
Format Type: PDF eBook :
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Reproduction Date: 2008-02-04

Title: Validation of Procedures for Monitoring Crewmember Immune Function  
Author: Crucian, Brian
Volume:
Language: English
Subject: Communication Equipment, Communication Networks, Engine Control
Collections: Government Library Collection, Government Library Collection
Historic
Publication Date:
2008
Publisher:

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Peter, U. (2008). Validation of Procedures for Monitoring Crewmember Immune Function. Retrieved from http://www.worldebookfair.com/


Description
Description: There is ample evidence to suggest that space flight leads to immune system dysregulation. This may be a result of microgravity, confinement, physiological stress, radiation, environment or other mission-associated factors. The clinical risk (if any) from prolonged immune dysregulation during exploration-class space flight has not yet been determined, but may include increased incidence of infection, allergy, hypersensitivity, hematological malignancy or altered wound healing. Each of the clinical events resulting from immune dysfunction has the potential to impact mission critical objectives during exploration-class missions. To date, precious little in-flight immune data has been generated to assess this phenomenon. The majority of recent flight immune studies have been post-flight assessments, which may not accurately reflect the in-flight status of immunity as it resolves over prolonged flight. There are no procedures currently in place to monitor immune function or its effect on crew health. The objective of this Supplemental Medical Objective (SMO) is to develop and validate an immune monitoring strategy consistent with operational flight requirements and constraints. This SMO will assess immunity, latent viral reactivation and physiological stress during both short and long duration flights. Upon completion, it is expected that any clinical risks resulting from the adverse effects of space flight on the human immune system will have been determined. In addition, a flight-compatible immune monitoring strategy will have been developed with which countermeasures validation could be performed. This study will determine, to the best level allowed by current technology, the in-flight status of crewmembers' immune systems. The in-flight samples will allow a distinction between legitimate in-flight alterations and the physiological stresses of landing and readaptation which are believed to alter R0 assessments. The overall status of the immune system during flight (activation, deficiency, dysregulation) and the response of the immune system to specific latent virus reactivation (known to occur during space flight) will be thoroughly assessed. The first in-flight activity for integrated immunity very recently occurred during the STS-120 Space Shuttle mission. The protocols functioned well from a technical perspective, and accurate in-flight data was obtained from 1 Shuttle and 2 ISS crewmembers. Crew participation rates for the study continue to be robust.; CASI; Nasa Publication Center: Johnson Space Center; Unclassified; No Copyright; Unlimited; Publicly available


 

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