A. Choukèr, M. Thiel, V. Baranov, D. Meshkov, A. Kotov, K. Peter, K. Messmer, F. Christ, (2001), "Simulated microgravity, psychic stress, and immune cells in men: observations during 120-day 6 degrees HDT", Journal of Applied Physiology, 90 (5), pp. 1736-1743.
F. Christ, J. Gamble, V. Baranov, A. Kotov, A. Chouker, M. Thiel, et al., (2001), "Changes in microvascular fluid filtration capacity during 120 days of 6 degrees head-down tilt", Journal of Applied Physiology, 91 (6), pp. 2517-2522.
A. Choukèr, L. Smith, F. Christ, I. Larina, I. Nichiporuk, V. Baranov, et al., (2002), "Effects of confinement (110 and 240 days) on neuroendocrine stress response and changes of immune cells in men", Journal of Applied Physiology (Bethesda, Md.: 1985), 92 (4), pp. 1619-27, doi:10.1152/japplphysiol.00732.2001.
A. Choukèr, I. Kaufmann, S. Kreth, D. Hauer, M. Feuerecker, D. Thieme, M. Vogeser, M. Thiel, G. Schelling, (2010) "Motion Sickness, Stress and the Endocannabinoid System", PLoS One, 5 (5), pp. e10752., doi: 10.1371/journal.pone.0010752, ed. Alejandro Lucia.
C. Strewe, M. Feuerecker, I. Nichiporuk, I. Kaufmann, D. Hauer, B. Morukov, G. Schelling, A. Chouker, (2012), "Effects of parabolic flight and spaceflight on the endocannabinoid system in humans", Nature Reviews Neuroscience, 23 (5-6), pp. 673-80.
M. Feuerecker, W. Mayer, I. Kaufmann, M. Gruber, F. Muckenthaler, Yi B., A.P. Salam, J. Briegel, G. Schelling, M. Thiel, A. Chouker, (2013), "A corticoid-sensitive cytokine release assay for monitoring stress-mediated immune modulation", Clinical & Experimental Immunology, 172, pp. 290-299.
B. Yi, M. Rykova, M. Feuerecker, B. Jäger, C. Ladinig, M. Basner, M. Hörl, S. Matzel, I. Kaufmann, C. Strewe, I. Nichiporuk, G. Vassilieva, K. Rinas, S. Baatout, G. Schelling, M. Thiel, D.F. Dinges, B. Morukov, A. Choukèr, (2014), "520-d Isolation and confinement simulating a flight to Mars reveals heightened immune responses and alterations of leukocyte phenotype", Brain, Behaviour, and Immunity, 40, pp. 203-210, doi: 10.1016/j.bbi.2014.03.018.
Neuroendocinology: e. g psychic stress tests, stress hormones.Our routine methodology will be extended by parameters developed in our laboratory to determine cellular energy metabolism (purines) and cell signalling. These applications are focused to achieve:
Immunology: e.g. numerical and functional analysis of unspecific (polymorphonuclear leukocytes, PMNL: expression of ß2-integrins, oxygen radicals) and specific immunity (lymphocytes-subpopulation and specific cytokine production, in vitro delayed type hypersensitivity reaction towards recall antigens, mRNA expressions).
BACKGROUND and JUSTIFICATION for the need of space environment:
Space flight can affect every organ system and may lead to several physiological changes (immune function, muscle atrophy, demineralisation of bones, changes in the circulation). Alterations in immune responses during and after space flight have been reported for humans, which could be a consequence of microgravity and radiation. In addition environmental stress factors (confinement, artificial circadian rhythm) occur and altogether affect neuroendocrine stress and immune responses.
In studies precluding the initiation of Russian, European and American space agencies to establish the long-term presence of people in Space (ISS-International Space Station, mission to Mars), ground-based simulation studies have allowed to investigate possible unfavourable changes of health under standardised conditions. Hence, ground based studies are carried out to mimic the conditions which may occur during space flight to a certain extent: the effects of low gravitation can be simulated during long-term hypokinesia in Head Down Tilt at 6° (HDT 6°) or water immersion.
Confinement can be induced operationally in submarines, polar stations, deep sea laboratories as well as during expeditions in the Antarctica. Ground-based investigations in normal pressurised space modules were also used to investigate neuroendocrine and immunological alterations which do occur during and/or after space flight. Even though these studies allow investigation of physiological adaptation to space related environmental conditions and are very useful in the development of „tools“ and methods for a subsequent use in space, „real-space-flight“ conditions remain the „golden standard.
CoSi-500 Study - Confinement for 500 days - Evaluation of Stress and Immunity
Mars105 - 2009
Mars500 - 2010
Immunological changes during bed-rest: the role of countermeasures
BRAG - Bed Rest with Artificial Gravity - 2011
number of subjects desired: 8
number of subjects required: 6
IMMUNO pre-flight measurements:
1 pre-flight mesurement will be performed at L-30 to L-7days. The following test and samplings will be performed:
IMMUNO in-flight measurements:
2 in-flight measurements will be performed:
The following test and samplings will be performed :
IMMUNO post-flight measurements:
2 post flight measures will be performed at R+1, R+7, R+20 days. The BDC program will be the same than the one performed during pre-flight measures.
The reference time for the R+1 session will be ISS time and for R+7 days session, the reference time will be either Moscow or Houston time, whatever is applicable depending on the country of return.
planned DATA ANALYSES
1.) Psycho-neuroendocrine regulation:
a) Current stress test (CST-paper or computerized test):
The current-stress-test does not induce stress but evaluates the stress and (un-) comfort perceived on space flight as determined by a score.
b) Prolactin and Corticotropin Releasing Hormone (CRH) (EDTA-plasma): Determined by Enzyme Linked Immuno Assay
c) Catecholamines (urine): Determination of dopamine, norepinephrine and epinephrine in urine collected within 24 hours (subsequent 12hrs + 12hrs). Measurement of concentration by High Performance Liquid Chromatography (HPLC) on earth.
d) Cortisol – Amylase (saliva-samples): Enzyme Linked Immuno Assay
e) Anandamine, (endogenous cannabinoid) (EDTA blood) is determined by Fluorescence detection from whole blood.
2. Immune Monitoring:
a) Relative Cell-Counts:
One drop of EDTA anti-coagulated whole blood (see 1 b) is placed on a blood smear glass device and a blood smear is conducted. The sample is dried thereafter at room air and stored in box at ambient room temperature until it is stained and analysed back on earth.
b) Cytokines and C-reactive protein (EDTA-Plasma). Multiplex-Analyses (up to 25 Pro and Anti-Inflammatory Cytokines), ELISA
3.) Energy metabolism and tissue perfusion (EDTA): 2ml
a) Plasma concentrations of purines (xanthine and hypoxanthine):
Because adenosine and inosine measurement require the presence of a stopping solution which is has not been possible on orbit, the metabolites of adenosine, xanthine and hypoxanthine, are quantified from EDTA plasma without the need of “stopping solution using reverse phase HPLC.
b) Lactate: Colorimetric assay.
Long-duration spaceflight triggered a sustained stress dependent release of endocannabinoids combined with an aberrant immune activation mimicking features of people at risk for inflammation related diseases. These effects persisted in part 30 days after return to Earth. The currently available repertoire of in-flight testing as well as the post-flight observation periods need to be expanded to tackle the underlying mechanism for and consequences of these immune changes in order to develop corresponding mitigation strategies based on a personalized approach for future interplanetary space explorations.
The following preliminary results can be stated, considering that not all analyses are completed, especially from in-flight ISS samples:
A) The biological markers of stress showed a significantly increased psycho-neuroendocrine stress response.
B) The host defence against bacterial and fungal challenges was increased.
C) The Host defence against virus infection indicated a reduced antiviral, adaptive immune responses.
These findings are indicating a differentially “alerted” innate immune responses.
11 Russian cosmonauts and one ESA astronaut completed the IMMUNO experiment. A ground control of 5 healthy subjects living under normal conditions on earth has been conducted in parallel.
BENEFITS FOR TERRESTRIAL RESEARCH / SPIN-OFF APPLICATIONS
At this stage (as of April 2014) it is too early to indicate benefits for terrestrial research as the analyses is not yet completed and could hence not compare to clinical setting and the results from other extreme but Earth-bound conditions (“space analogues”). However, the methodological needs and evolution of new methods to get advantage of a maximal data extraction of minimal amounts of blood which has led already to improvement in clinical research.
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B.V. Morukov, M.P. Rykova, E. Antropova, T. Berendeeva, S. Ponomaryov, I. Larina, (2011), "T-cell immunity and cytokine production in cosmonauts after long-duration space flights", Acta Astronautica, 68, 7-8, http://dx.doi.org/10.1016/j.actaastro.2010.08.036, pp. 739-746.
B.V. Morukov, M.P. Rykova, E.N. Antropova, T.A. Berendeeva, I.B. Morukov, S.A. Ponomarev, (2013), "Immunological aspects of a space flight to Mars", Human Physiology, 39, 2, pp. 126-135.
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M. Thiel, A. Choukèr, A. Ohta, E. Jackson, C. Caldwell, P. Smith, D. Lukashev, I. Bittmann, M.V. Sitkovsky, (2005), "Oxygenation inhibits the physiological tissue-protecting mechanism and thereby exacerbates acute inflammatory lung injury", PLoS Biology, 3, 6, DOI: 10.1371/journal.pbio.0030174, pp. e174.
A. Choukèr, L. Smith, F. Christ, I. Larina, I. Nichiporuk, V. Baranov, E. Bobrovnik, L. Pastushkova, K. Messmer, K. Peter, M. Thiel, (2002), "Effects of confinement (110 and 240 days) on neuroendocrine stress response and changes of immune cells in men", Journal of Applied Physiology, 92, 4, DOI: 10.1152/japplphysiol.00732.2001, pp. 1619-1627.
F. Christ, J. Gamble, V. Baranov, A. Kotov, A. Choukèr, M. Thiel, I.B. Gartside, C.M. Moser, J. Abicht, K. Messmer, (2001), "Changes in microvascular fluid filtration capacity during 120 days of 6 degrees head-down tilt", Journal of Applied Physiology, 91, 6, pp. 2517-2522.
A. Choukèr, M. Thiel, V. Baranov, D. Meshkov, A. Kotov, K. Peter, K. Messmer, F. Christ, (2001), "Simulated microgravity, psychic stress, and immune cells in men: observations during 120-day 6 degrees HDT", Journal of Applied Physiology, 90, 5, DOI: 10.1152/jappl.2001.90.5.1736, pp. 1736-1743.
M. Thiel, J.D. Chambers, A. Choukèr, S. Fischer, C. Zourelidis, H.J. Bardenheuer, K.E. Arfors, K. Peter, (1996), "Effect of adenosine on the expression of beta(2) integrins and L-selectin of human polymorphonuclear leukocytes in vitro", Journal of Leukocyte Biology, 59, 5, pp. 671-682.
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C. Strewe, M. Feuerecker, I. Nichiporuk, I. Kaufmann, D. Hauer, B. Morukov, G. Schelling, A. Choukèr, (2012), "Effects of parabolic flight and spaceflight on the endocannabinoid system in humans", Nature Reviews Neuroscience, 23, 5-6, pp. 673-680.
M. Feuerecker, W. Mayer, I. Kaufmann, M. Gruber, F. Muckenthaler, B. Yi, A.P. Salam, J. Briegel, G. Schelling, M. Thiel, A. Choukèr, (2013), "A corticoid-sensitive cytokine release assay for monitoring stress-mediated immune modulation", Clinical & Experimental Immunology, 172, 2, DOI: 10.1111/cei.12049, pp. 290-299.
A. Choukèr, F. Demetz, A. Martignoni, L. Smith, F. Setzer, A. Bauer, J. Holzl, K. Peter, F. Christ, M. Thiel, (2005), "Strenuous physical exercise inhibits granulocyte activation induced by high altitude", Journal of Applied Physiology, 98, 2, DOI: 10.1152/japplphysiol.00036.2004, pp. 640-647.
J.I. Buchheim, S. Matzel, M. Rykova, G. Vassilieva, S. Ponomarev, I. Nichiporuk, M. Hörl, D. Moser, K. Biere, M. Feuerecker, G. Schelling, D. Thieme, I. Kaufmann, M. Thiel, A. Choukèr, (2019), "Stress Related Shift Toward Inflammaging in Cosmonauts After Long-Duration Space Flight", Frontiers in Physiology, 10, DOI: 10.3389/fphys.2019.00085 ISSN=1664-042X, pp. 85.
click on items to display
Figure 1: Experiment Concept - Operational Overview
Figure 2: Experiment Concept - Operational Scenario Overview
Figure 3: Blood sample showing white blood cells: Lymphocytes (L) and Granulocytes (G).
ISS030-E-257690 (26 April 2012) European Space Agency astronaut Andre Kuipers, Expedition 30 flight engineer, prepares for IMMUNO venous blood sample draws in the Columbus laboratory of the International Space Station. Following the blood draws, the samples were temporarily stowed in the Minus Eighty Laboratory Freezer for ISS 1 (MELFI-1) and later packed together with saliva samples on the Soyuz TMA-22 for return to Earth for analysis. Credit: NASA/ESA
Reference Document  J.I. Buchheim, S. Matzel, M. Rykova, G. Vassilieva, S. Ponomarev, I. Nichiporuk, M. Hörl, D. Moser, K. Biere, M. Feuerecker, G. Schelling, D. Thieme, I. Kaufmann, M. Thiel, A. Choukèr, (2019), "Stress Related Shift Toward Inflammaging in Cosmonauts After Long-Duration Space Flight", Frontiers in Physiology, 10, DOI: 10.3389/fphys.2019.00085 ISSN=1664-042X, pp. 85.