Lymphocyte peroxiredoxin-2 levels are depleted one week after ultra-endurance exercise

J.E. Turner, S.J. Bennett, J.A. Bosch, S. Aldred, H.R. Griffiths

Research output: Contribution to journalMeeting abstract

Abstract

Peroxiredoxin-2 (PRDX-2) belongs to a family of thiol containing proteins and is important for antioxidant defense, redox signaling and cell function. This study examined whether lymphocyte PRDX-2 levels are altered over one month following ultra-endurance exercise. Nine middle-aged men participated in a 145 mile ultra-endurance running race event. Blood drawing was undertaken immediately before, upon completion/retirement, and at one, seven and twenty eight-days following the race. PRDX-2 levels were examined at each time-point, for all participants (n=9) by reducing SDS-PAGE and western blotting. Further analysis using non-reducing SDS-PAGE and western blotting was undertaken in a sub-group of men who completed the race (n = 4) to investigate PRDX-2 oligomeric state (indicative of oxidation state). Ultra-endurance exercise caused a significant alteration in lymphocyte PRDX-2 levels (F(4,32) 3.409, p=0.020, η2 =0.299): seven-days after the race PRDX-2 levels fell by 70% (p=0.013) and at twenty eight-days after the race returned to near-normal levels. PRDX-2 dimers (intracellular reduced PRDX-2 monomers) in three of the four participants, who finished the race, were increased upon race completion. Furthermore, PRDX-2 monomers (intracellular over-oxidized PRDX-2 monomers) in two of these four participants were present upon race completion, but absent seven-days after the race. This study found that PRDX-2 levels in lymphocytes were reduced below normal levels seven-days after an ultra-endurance running race. We suggest that excessive reactive oxygen species production, induced by ultra-endurance exercise may, in part, explain the depletion of lymphocyte PRDX-2 by triggering its turnover after oxidation.
Original languageEnglish
Article numberPP90
Pages (from-to)S56
Number of pages1
JournalFree Radical Biology and Medicine
Volume65
Issue numberSuppl.1
DOIs
Publication statusPublished - 20 Sep 2013
EventSFRR - Europe 2013 meeting - Athens, Greece
Duration: 23 Sep 201325 Sep 2013

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Peroxiredoxins
Lymphocytes
Durability
Exercise
Monomers
Running
Polyacrylamide Gel Electrophoresis
Western Blotting
Lymphocyte Depletion
Oxidation
Retirement
Sulfhydryl Compounds
Dimers
Oxidation-Reduction
Reactive Oxygen Species

Bibliographical note

SFRR - Europe 2013 Meeting "The new era of -omics in Free Radicals in Biology and Medicine", 23 - 25 Sep 2013, Athens, Greece.

Cite this

Turner, J. E., Bennett, S. J., Bosch, J. A., Aldred, S., & Griffiths, H. R. (2013). Lymphocyte peroxiredoxin-2 levels are depleted one week after ultra-endurance exercise. Free Radical Biology and Medicine, 65(Suppl.1), S56. [PP90]. https://doi.org/10.1016/j.freeradbiomed.2013.08.099
Turner, J.E. ; Bennett, S.J. ; Bosch, J.A. ; Aldred, S. ; Griffiths, H.R. / Lymphocyte peroxiredoxin-2 levels are depleted one week after ultra-endurance exercise. In: Free Radical Biology and Medicine. 2013 ; Vol. 65, No. Suppl.1. pp. S56.
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abstract = "Peroxiredoxin-2 (PRDX-2) belongs to a family of thiol containing proteins and is important for antioxidant defense, redox signaling and cell function. This study examined whether lymphocyte PRDX-2 levels are altered over one month following ultra-endurance exercise. Nine middle-aged men participated in a 145 mile ultra-endurance running race event. Blood drawing was undertaken immediately before, upon completion/retirement, and at one, seven and twenty eight-days following the race. PRDX-2 levels were examined at each time-point, for all participants (n=9) by reducing SDS-PAGE and western blotting. Further analysis using non-reducing SDS-PAGE and western blotting was undertaken in a sub-group of men who completed the race (n = 4) to investigate PRDX-2 oligomeric state (indicative of oxidation state). Ultra-endurance exercise caused a significant alteration in lymphocyte PRDX-2 levels (F(4,32) 3.409, p=0.020, η2 =0.299): seven-days after the race PRDX-2 levels fell by 70{\%} (p=0.013) and at twenty eight-days after the race returned to near-normal levels. PRDX-2 dimers (intracellular reduced PRDX-2 monomers) in three of the four participants, who finished the race, were increased upon race completion. Furthermore, PRDX-2 monomers (intracellular over-oxidized PRDX-2 monomers) in two of these four participants were present upon race completion, but absent seven-days after the race. This study found that PRDX-2 levels in lymphocytes were reduced below normal levels seven-days after an ultra-endurance running race. We suggest that excessive reactive oxygen species production, induced by ultra-endurance exercise may, in part, explain the depletion of lymphocyte PRDX-2 by triggering its turnover after oxidation.",
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Lymphocyte peroxiredoxin-2 levels are depleted one week after ultra-endurance exercise. / Turner, J.E.; Bennett, S.J.; Bosch, J.A.; Aldred, S.; Griffiths, H.R.

In: Free Radical Biology and Medicine, Vol. 65, No. Suppl.1, PP90, 20.09.2013, p. S56.

Research output: Contribution to journalMeeting abstract

TY - JOUR

T1 - Lymphocyte peroxiredoxin-2 levels are depleted one week after ultra-endurance exercise

AU - Turner, J.E.

AU - Bennett, S.J.

AU - Bosch, J.A.

AU - Aldred, S.

AU - Griffiths, H.R.

N1 - SFRR - Europe 2013 Meeting "The new era of -omics in Free Radicals in Biology and Medicine", 23 - 25 Sep 2013, Athens, Greece.

PY - 2013/9/20

Y1 - 2013/9/20

N2 - Peroxiredoxin-2 (PRDX-2) belongs to a family of thiol containing proteins and is important for antioxidant defense, redox signaling and cell function. This study examined whether lymphocyte PRDX-2 levels are altered over one month following ultra-endurance exercise. Nine middle-aged men participated in a 145 mile ultra-endurance running race event. Blood drawing was undertaken immediately before, upon completion/retirement, and at one, seven and twenty eight-days following the race. PRDX-2 levels were examined at each time-point, for all participants (n=9) by reducing SDS-PAGE and western blotting. Further analysis using non-reducing SDS-PAGE and western blotting was undertaken in a sub-group of men who completed the race (n = 4) to investigate PRDX-2 oligomeric state (indicative of oxidation state). Ultra-endurance exercise caused a significant alteration in lymphocyte PRDX-2 levels (F(4,32) 3.409, p=0.020, η2 =0.299): seven-days after the race PRDX-2 levels fell by 70% (p=0.013) and at twenty eight-days after the race returned to near-normal levels. PRDX-2 dimers (intracellular reduced PRDX-2 monomers) in three of the four participants, who finished the race, were increased upon race completion. Furthermore, PRDX-2 monomers (intracellular over-oxidized PRDX-2 monomers) in two of these four participants were present upon race completion, but absent seven-days after the race. This study found that PRDX-2 levels in lymphocytes were reduced below normal levels seven-days after an ultra-endurance running race. We suggest that excessive reactive oxygen species production, induced by ultra-endurance exercise may, in part, explain the depletion of lymphocyte PRDX-2 by triggering its turnover after oxidation.

AB - Peroxiredoxin-2 (PRDX-2) belongs to a family of thiol containing proteins and is important for antioxidant defense, redox signaling and cell function. This study examined whether lymphocyte PRDX-2 levels are altered over one month following ultra-endurance exercise. Nine middle-aged men participated in a 145 mile ultra-endurance running race event. Blood drawing was undertaken immediately before, upon completion/retirement, and at one, seven and twenty eight-days following the race. PRDX-2 levels were examined at each time-point, for all participants (n=9) by reducing SDS-PAGE and western blotting. Further analysis using non-reducing SDS-PAGE and western blotting was undertaken in a sub-group of men who completed the race (n = 4) to investigate PRDX-2 oligomeric state (indicative of oxidation state). Ultra-endurance exercise caused a significant alteration in lymphocyte PRDX-2 levels (F(4,32) 3.409, p=0.020, η2 =0.299): seven-days after the race PRDX-2 levels fell by 70% (p=0.013) and at twenty eight-days after the race returned to near-normal levels. PRDX-2 dimers (intracellular reduced PRDX-2 monomers) in three of the four participants, who finished the race, were increased upon race completion. Furthermore, PRDX-2 monomers (intracellular over-oxidized PRDX-2 monomers) in two of these four participants were present upon race completion, but absent seven-days after the race. This study found that PRDX-2 levels in lymphocytes were reduced below normal levels seven-days after an ultra-endurance running race. We suggest that excessive reactive oxygen species production, induced by ultra-endurance exercise may, in part, explain the depletion of lymphocyte PRDX-2 by triggering its turnover after oxidation.

U2 - 10.1016/j.freeradbiomed.2013.08.099

DO - 10.1016/j.freeradbiomed.2013.08.099

M3 - Meeting abstract

VL - 65

SP - S56

JO - Free Radical Biology and Medicine

JF - Free Radical Biology and Medicine

SN - 0891-5849

IS - Suppl.1

M1 - PP90

ER -