NCT05423470

Brief Summary

The objective of the present study is to determine whether intermittent hypoxia protects against ischemia-reperfusion injury in young and older healthy individuals. The investigators hypothesize that intermittent hypoxia will attenuate the reduction in flow-mediated dilation following ischemia-reperfusion injury.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
41

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started May 2019

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 30, 2019

Completed
2.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 30, 2021

Completed
5 months until next milestone

First Submitted

Initial submission to the registry

June 9, 2022

Completed
12 days until next milestone

First Posted

Study publicly available on registry

June 21, 2022

Completed
10 days until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2022

Completed
Last Updated

December 7, 2022

Status Verified

December 1, 2022

Enrollment Period

2.6 years

First QC Date

June 9, 2022

Last Update Submit

December 5, 2022

Conditions

Intermittent Hypoxia

Outcome Measures

Primary Outcomes (1)

  • Change in endothelial-dependent vasodilation of the brachial artery will be assessed by flow-mediated dilation using an ultrasound machine

    Indicator of nitric oxide-dependent endothelial function

    Measured before and 15 minutes after an ischemia-reperfusion injury.

Study Arms (2)

Intermittent hypoxia

EXPERIMENTAL

The intermittent hypoxia protocol will consist of three 4-minute hypoxic cycles (arterial oxygen saturation of 80%) interspersed with 4-minute normoxic cycles.

Behavioral: Intermittent hypoxia

Intermittent normoxia

SHAM COMPARATOR

The intermittent normoxia protocol will consist of three 4-minute normoxic cycles (compressed air) interspersed with 4-minute normoxic cycles (room air).

Behavioral: Intermittent normoxia

Interventions

Intermittent hypoxiaBEHAVIORAL

The intermittent hypoxia protocol will consist of three 4-minute hypoxic cycles (arterial oxygen saturation of 80%) interspersed with 4-minute normoxic cycles.

Intermittent hypoxia
Intermittent normoxiaBEHAVIORAL

The intermittent normoxia protocol will consist of three 4-minute normoxic cycles (compressed air) interspersed with 4-minute normoxic cycles (room air).

Intermittent normoxia

Eligibility Criteria

Age18 Years - 80 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Men and women aged 18 to 80 years old

You may not qualify if:

  • Have high blood pressure (above 130/80 mmHg)
  • Are smokers
  • Are pregnant
  • Have a history of cardiovascular disease, diabetes or lung disease
  • Are taking medication affecting the cardiovascular system
  • Carpal tunnel syndrome

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

The Unviersity of Texas at Austin

Austin, Texas, 78712, United States

Location

Related Publications (25)

  • Kvietys PR, Granger DN. Endothelial cell monolayers as a tool for studying microvascular pathophysiology. Am J Physiol. 1997 Dec;273(6):G1189-99. doi: 10.1152/ajpgi.1997.273.6.G1189.

    PMID: 9435543BACKGROUND

  • Csiszar A, Wang M, Lakatta EG, Ungvari Z. Inflammation and endothelial dysfunction during aging: role of NF-kappaB. J Appl Physiol (1985). 2008 Oct;105(4):1333-41. doi: 10.1152/japplphysiol.90470.2008. Epub 2008 Jul 3.

    PMID: 18599677BACKGROUND

  • Grisham MB, Granger DN, Lefer DJ. Modulation of leukocyte-endothelial interactions by reactive metabolites of oxygen and nitrogen: relevance to ischemic heart disease. Free Radic Biol Med. 1998 Sep;25(4-5):404-33. doi: 10.1016/s0891-5849(98)00094-x.

    PMID: 9741579BACKGROUND

  • Honda HM, Korge P, Weiss JN. Mitochondria and ischemia/reperfusion injury. Ann N Y Acad Sci. 2005 Jun;1047:248-58. doi: 10.1196/annals.1341.022.

    PMID: 16093501BACKGROUND

  • Powers SK, Murlasits Z, Wu M, Kavazis AN. Ischemia-reperfusion-induced cardiac injury: a brief review. Med Sci Sports Exerc. 2007 Sep;39(9):1529-36. doi: 10.1249/mss.0b013e3180d099c1.

    PMID: 17805085BACKGROUND

  • Rodriguez-Manas L, El-Assar M, Vallejo S, Lopez-Doriga P, Solis J, Petidier R, Montes M, Nevado J, Castro M, Gomez-Guerrero C, Peiro C, Sanchez-Ferrer CF. Endothelial dysfunction in aged humans is related with oxidative stress and vascular inflammation. Aging Cell. 2009 Jun;8(3):226-38. doi: 10.1111/j.1474-9726.2009.00466.x. Epub 2009 Feb 26.

    PMID: 19245678BACKGROUND

  • Anderson TJ, Uehata A, Gerhard MD, Meredith IT, Knab S, Delagrange D, Lieberman EH, Ganz P, Creager MA, Yeung AC, et al. Close relation of endothelial function in the human coronary and peripheral circulations. J Am Coll Cardiol. 1995 Nov 1;26(5):1235-41. doi: 10.1016/0735-1097(95)00327-4.

    PMID: 7594037BACKGROUND

  • Harris RA, Nishiyama SK, Wray DW, Richardson RS. Ultrasound assessment of flow-mediated dilation. Hypertension. 2010 May;55(5):1075-85. doi: 10.1161/HYPERTENSIONAHA.110.150821. Epub 2010 Mar 29.

    PMID: 20351340BACKGROUND

  • Aboo Bakkar Z, Fulford J, Gates PE, Jackman SR, Jones AM, Bond B, Bowtell JL. Prolonged forearm ischemia attenuates endothelium-dependent vasodilatation and plasma nitric oxide metabolites in overweight middle-aged men. Eur J Appl Physiol. 2018 Aug;118(8):1565-1572. doi: 10.1007/s00421-018-3886-z. Epub 2018 May 21.

    PMID: 29785503BACKGROUND

  • Brunt VE, Jeckell AT, Ely BR, Howard MJ, Thijssen DH, Minson CT. Acute hot water immersion is protective against impaired vascular function following forearm ischemia-reperfusion in young healthy humans. Am J Physiol Regul Integr Comp Physiol. 2016 Dec 1;311(6):R1060-R1067. doi: 10.1152/ajpregu.00301.2016. Epub 2016 Oct 5.

    PMID: 27707723BACKGROUND

  • Devan AE, Umpierre D, Harrison ML, Lin HF, Tarumi T, Renzi CP, Dhindsa M, Hunter SD, Tanaka H. Endothelial ischemia-reperfusion injury in humans: association with age and habitual exercise. Am J Physiol Heart Circ Physiol. 2011 Mar;300(3):H813-9. doi: 10.1152/ajpheart.00845.2010. Epub 2011 Jan 14.

    PMID: 21239631BACKGROUND

  • DeVan AE, Umpierre D, Lin HF, Harrison ML, Tarumi T, Dhindsa M, Hunter SD, Sommerlad SM, Tanaka H. Habitual resistance exercise and endothelial ischemia-reperfusion injury in young adults. Atherosclerosis. 2011 Nov;219(1):191-3. doi: 10.1016/j.atherosclerosis.2011.07.099. Epub 2011 Jul 26.

    PMID: 21840524BACKGROUND

  • Loukogeorgakis SP, Williams R, Panagiotidou AT, Kolvekar SK, Donald A, Cole TJ, Yellon DM, Deanfield JE, MacAllister RJ. Transient limb ischemia induces remote preconditioning and remote postconditioning in humans by a K(ATP)-channel dependent mechanism. Circulation. 2007 Sep 18;116(12):1386-95. doi: 10.1161/CIRCULATIONAHA.106.653782. Epub 2007 Aug 27.

    PMID: 17724264BACKGROUND

  • Carden DL, Granger DN. Pathophysiology of ischaemia-reperfusion injury. J Pathol. 2000 Feb;190(3):255-66. doi: 10.1002/(SICI)1096-9896(200002)190:33.0.CO;2-6.

    PMID: 10685060BACKGROUND

  • Gross GJ, Auchampach JA. Blockade of ATP-sensitive potassium channels prevents myocardial preconditioning in dogs. Circ Res. 1992 Feb;70(2):223-33. doi: 10.1161/01.res.70.2.223.

    PMID: 1310443BACKGROUND

  • Chang HR, Lien CF, Jeng JR, Hsieh JC, Chang CW, Lin JH, Yang KT. Intermittent Hypoxia Inhibits Na+-H+ Exchange-Mediated Acid Extrusion Via Intracellular Na+ Accumulation in Cardiomyocytes. Cell Physiol Biochem. 2018;46(3):1252-1262. doi: 10.1159/000489076. Epub 2018 Apr 16.

    PMID: 29672298BACKGROUND

  • Mateika JH, El-Chami M, Shaheen D, Ivers B. Intermittent hypoxia: a low-risk research tool with therapeutic value in humans. J Appl Physiol (1985). 2015 Mar 1;118(5):520-32. doi: 10.1152/japplphysiol.00564.2014. Epub 2014 Dec 30.

    PMID: 25549763BACKGROUND

  • Manukhina EB, Belkina LM, Terekhina OL, Abramochkin DV, Smirnova EA, Budanova OP, Mallet RT, Downey HF. Normobaric, intermittent hypoxia conditioning is cardio- and vasoprotective in rats. Exp Biol Med (Maywood). 2013 Dec;238(12):1413-20. doi: 10.1177/1535370213508718. Epub 2013 Nov 4.

    PMID: 24189016BACKGROUND

  • Cai Z, Manalo DJ, Wei G, Rodriguez ER, Fox-Talbot K, Lu H, Zweier JL, Semenza GL. Hearts from rodents exposed to intermittent hypoxia or erythropoietin are protected against ischemia-reperfusion injury. Circulation. 2003 Jul 8;108(1):79-85. doi: 10.1161/01.CIR.0000078635.89229.8A. Epub 2003 Jun 9.

    PMID: 12796124BACKGROUND

  • van den Munckhof I, Riksen N, Seeger JP, Schreuder TH, Borm GF, Eijsvogels TM, Hopman MT, Rongen GA, Thijssen DH. Aging attenuates the protective effect of ischemic preconditioning against endothelial ischemia-reperfusion injury in humans. Am J Physiol Heart Circ Physiol. 2013 Jun 15;304(12):H1727-32. doi: 10.1152/ajpheart.00054.2013. Epub 2013 Apr 19.

    PMID: 23604707BACKGROUND

  • Burtscher M, Haider T, Domej W, Linser T, Gatterer H, Faulhaber M, Pocecco E, Ehrenburg I, Tkatchuk E, Koch R, Bernardi L. Intermittent hypoxia increases exercise tolerance in patients at risk for or with mild COPD. Respir Physiol Neurobiol. 2009 Jan 1;165(1):97-103. doi: 10.1016/j.resp.2008.10.012. Epub 2008 Nov 1.

    PMID: 19013544BACKGROUND

  • Burtscher M, Pachinger O, Ehrenbourg I, Mitterbauer G, Faulhaber M, Puhringer R, Tkatchouk E. Intermittent hypoxia increases exercise tolerance in elderly men with and without coronary artery disease. Int J Cardiol. 2004 Aug;96(2):247-54. doi: 10.1016/j.ijcard.2003.07.021.

    PMID: 15262041BACKGROUND

  • Wesseling KH, Jansen JR, Settels JJ, Schreuder JJ. Computation of aortic flow from pressure in humans using a nonlinear, three-element model. J Appl Physiol (1985). 1993 May;74(5):2566-73. doi: 10.1152/jappl.1993.74.5.2566.

    PMID: 8335593BACKGROUND

  • Seeger JP, Benda NM, Riksen NP, van Dijk AP, Bellersen L, Hopman MT, Cable NT, Thijssen DH. Heart failure is associated with exaggerated endothelial ischaemia-reperfusion injury and attenuated effect of ischaemic preconditioning. Eur J Prev Cardiol. 2016 Jan;23(1):33-40. doi: 10.1177/2047487314558377. Epub 2014 Nov 11.

    PMID: 25389072BACKGROUND

  • Laurie SS, Yang X, Elliott JE, Beasley KM, Lovering AT. Hypoxia-induced intrapulmonary arteriovenous shunting at rest in healthy humans. J Appl Physiol (1985). 2010 Oct;109(4):1072-9. doi: 10.1152/japplphysiol.00150.2010. Epub 2010 Aug 5.

    PMID: 20689088BACKGROUND

Study Officials

  • Sophie Lalande

    UT Austin

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
PREVENTION
Intervention Model
CROSSOVER
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assistant Professor

Study Record Dates

First Submitted

June 9, 2022

First Posted

June 21, 2022

Study Start

May 30, 2019

Primary Completion

December 30, 2021

Study Completion

July 1, 2022

Last Updated

December 7, 2022

Record last verified: 2022-12

Data Sharing

IPD Sharing
Will not share

Locations

US(1)