[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100620397":3},{"organization":4,"armGroups":7,"interventions":18,"overallOfficials":24,"centralContacts":29,"locations":39,"responsibleParty":57,"collaborators":23,"id":61,"slug":62,"hasResults":63,"nctId":64,"briefTitle":65,"officialTitle":66,"acronym":67,"eligibilityCriteria":68,"healthyVolunteers":69,"sex":70,"minAge":71,"maxAge":72,"enrollmentInfo":73,"targetDuration":23,"studyType":76,"phases":77,"briefSummary":79,"conditions":80,"keywords":84,"overallStatus":41,"whyStopped":23,"lastUpdateSubmitDate":86,"lastUpdatePostDateStruct":87,"startDateStruct":90,"completionDateStruct":92,"leadSponsor":94,"locationsCount":95},{"fullName":5,"class":6},"The Mind Research Network","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Individuals with TBI","EXPERIMENTAL","A counter-balanced, cross-over design (AB\u002FBA), in which individuals with TBI (aged 18-82 years) may be dosed to achieve 5 or 10 mmHG changes in ETCO2 across multiple visits.",[13],"Other: Hypercapnia task performed during fMRI",{"label":15,"type":10,"description":16,"interventionNames":17},"Healthy Subjects","A counter-balanced, cross-over design (AB\u002FBA), in which individuals without a history of TBI (healthy subjects, aged 18-82 years) may be dosed to achieve 5 or 10 mmHG changes in ETCO2 across multiple visits.",[13],[19],{"type":6,"name":20,"description":21,"armGroupLabels":22,"otherNames":23},"Hypercapnia task performed during fMRI","This study looks at different levels of carbon dioxide (CO2) exposure (changes of approximately 5 or 10 mmHg) on the brain and proteins in blood, in response to a hypercapnia task while participants undergo MRI. This sequence will dynamically mix gases to target an increase of 5 or 10 mmHg in ETCO2 (increase of \\~5-7% CO2 and equal decrease in nitrogen) while keeping O2 constant.",[15,9],null,[25],{"name":26,"affiliation":27,"role":28},"Andrew R Mayer, Phd","Mind Research Network","PRINCIPAL_INVESTIGATOR",[30,35],{"name":31,"role":32,"phone":33,"phoneExt":23,"email":34},"Jody Roberts, MS","CONTACT","505-272-5028","jroberts@mrn.org",{"name":36,"role":32,"phone":37,"phoneExt":23,"email":38},"Andrew Mayer R The Mind Research Network, PhD","505-272-0769","amayer@mrn.org",[40],{"facility":5,"status":41,"city":42,"state":43,"zip":44,"country":45,"countryCode":46,"cosmosGeoPoint":47,"geoPoint":52,"contacts":53},"RECRUITING","Albuquerque","New Mexico","87106","United States","US",{"type":48,"coordinates":49},"Point",[50,51],-106.65114,35.08449,{"lat":51,"lon":50},[54,55],{"name":31,"role":32,"phone":33,"phoneExt":23,"email":34},{"name":56,"role":28,"phone":23,"phoneExt":23,"email":23},"Andrew Mayer, Phd",{"type":58,"investigatorFullName":59,"investigatorTitle":60,"investigatorAffiliation":5,"oldNameTitle":23,"oldOrganization":23},"SPONSOR_INVESTIGATOR","Andrew Mayer","Professor of Translational Research","100620397","carbon-dioxide-administration-and-brain-waste-clearance-100620397",false,"NCT07357090","Carbon Dioxide Administration and Brain Waste Clearance","Mechanisms Underlying Carbon Dioxide Induced Protein Efflux in Health and Traumatic Brain Injury","COPETBI","Inclusion criteria for TBI cohort: 1) Able to give valid informed consent, 2) 18-82 years old, 3) history of TBI of any severity level (mild, moderate or severe) that was sustained in adulthood (age 18 and older), which will be confirmed using a semi-structured identification method (includes asking about loss of consciousness, posttraumatic amnesia, and feeling dazed\u002Fconfused).\n\nInclusion criteria for Healthy Subjects cohort: 1) Able to give valid informed consent and 2) 18-82 years old years old.\n\nExclusion criteria for TBI cohort: 1) contraindications to MRI scanning including pregnancy or claustrophobia, 2) unable to give valid informed consent, incarcerated, 3) diagnosed with Alzheimer's, ADRD or mild cognitive impairment, 4) pre-existing history of autism spectrum disorders, intellectual disability, serious neurological (e.g., epilepsy, tumors, other conditions requiring neurosurgery) or psychiatric disorders (requiring hospitalization) prior to TBI onset, 5) current or previous diagnosis of a psychosis spectrum disorder or bipolar disorder, 6) respiratory diseases or pulmonary conditions that may increase the risk of study procedures (e.g., severe asthma, chronic obstructive pulmonary disease or other significant respiratory disorders), 7) a history of cardiac arrythmias 8) history of a current substance use disorder, 9) non-English fluency (based on screener), 10) Weigh under 110 pounds for blood draw.\n\nExclusion criteria for Healthy Subjects cohort: 1) contraindications to MRI scanning including pregnancy or claustrophobia, 2) unable to give valid informed consent, incarcerated, 3) diagnosed with Alzheimer's, ADRD or mild cognitive impairment, 4) history of developmental, neurological, or psychiatric disorders requiring hospitalization, 5) regular use of any substance in the past six months (i.e., no current use confirmed with urine screening), 6) previous head injury with greater than 30 minutes loss of consciousness, 7) respiratory diseases or pulmonary conditions that may increase the risk of study procedures (e.g., severe asthma, chronic obstructive pulmonary disease or other significant respiratory disorders), 8) a history of cardiac arrythmias, 9) non-English fluency (based on screener), 10) Weigh under 110 pounds for blood draw.",true,"ALL","18 Years","82 Years",{"count":74,"type":75},200,"ESTIMATED","INTERVENTIONAL",[78],"NA","The current study tests whether different exposures to carbon dioxide (CO2) can safely result in the increased movement of proteins from the brain into the blood. The investigators believe that this would be a proxy for the brain clearing waste products more effectively. The current study will use a counter-balanced design, in which individuals with and without a history of traumatic brain injury (TBI) will receive different levels of CO2 (targeted changes of approximately 5 or 10 mmHG in end-tidal CO2) approximately one week apart. The counter-balanced design means that each participant receives a single dose of CO2 at each visit, and different doses of CO2 at each visit. The order in which participants receive the dose is randomized, and the participant will not be informed of the dose.",[81,82,83],"Traumatic Brain Injury","Aging Disorder","Magnetic Resonance Imaging (MRI)",[81,85],"Magnetic Resonance Imaging","2026-02-19",{"date":88,"type":89},"2026-02-23","ACTUAL",{"date":91,"type":75},"2026-04",{"date":93,"type":75},"2032-02",{"name":59,"class":6},1]