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Effects of Transfusion of Older Stored Red Cells

11. august 2016 opdateret af: Steven L. Spitalnik, Columbia University

Harmful Effects of Transfusion of Older Stored Red Cells: Iron and Inflammation

The purpose of this study is to determine the effects of transfusion of fresh and stored blood on patients.

The investigators hope to test:

  • whether a similar effect (older stored blood is associated with worse outcomes) is seen in chronically transfused patients with hemoglobinopathies. This patient population will also allow the investigators to test whether iron- chelation therapy is beneficial in this setting.
  • whether washing or cryopreserving the red blood cells has any effect on this outcome.

These findings may explain the immunomodulatory effects of older stored blood in patients and will help us develop safer transfusion products for patients.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Epidemiologic studies suggest that older stored blood is associated with worse outcomes in certain hospitalized patients. Storage of red cells is associated with a storage lesion and the survival of transfused red cells decreases with increasing storage time, thus older blood is associated with an increased acute delivery of hemoglobin-iron to the reticuloendothelial system. The investigators have preliminary data in healthy human volunteers suggesting that delivery of a significant iron load to the reticuloendothelial system from aged red cells leads to the elaboration of a potentially toxic form of iron known as non-transferrin-bound iron.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

3

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Forenede Stater
    • New York
      • New York, New York, Forenede Stater, 10032
        • Columbia University Medical Center

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

1 år til 65 år (Barn, Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria (Recipient):

  • specific, well-characterized hemoglobinopathy
  • chronic simple transfusion therapy (transfusion episodes < 6 weeks apart in frequency)
  • chronic iron chelation therapy
  • not pregnant by self-report and not planning pregnancy
  • age > 1 year old

Exclusion Criteria (Recipient):

  • clinically unstable
  • treatment for mental illness
  • imprisonment
  • institutionalization

Inclusion Criteria (Donor):

  • 21-65 years of age
  • male weight > 130 lbs, female weight > 150 lbs
  • male height > 5'1", female height > 5'5"
  • hemoglobin > 15.0 g/dL
  • reasonably certain of intention to stay in New York City metropolitan area for study duration
  • previously tolerated red blood cell donation

Exclusion Criteria (Donor):

  • ineligible for donation based on New York Blood Center blood donor screening questionnaire
  • systolic blood pressure < 90 or > 180 mm Hg, diastolic blood pressure < 50 or > 100 mm Hg
  • heart rate < 50 or > 100
  • temperature > 99.5 F prior to donation
  • positive by standard infectious disease testing performed on blood donors

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Ikke-randomiseret
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: Transfusion of Fresh blood
The recipient will receive one or two units of fresh blood <14 days old, as per their chronic transfusion schedule - on or off chelation therapy.
Procedure: Transfusion
A routine medical procedure to transfuse packed red blood cells.
Andre navne:
  • RBC transfusion
Biologisk: Blood

Processing of RBC for transfusion include the following:

  • Fresh
  • Stored
  • Washed
  • Frozen (Cryopreserved)
Andre navne:
  • RBC product
  • Reb Blood Cells
Procedure: Chelation therapy
(non-experimental) A medical procedure that involves the administration of chelating agents to remove heavy metals from the body.
Eksperimentel: Transfusion of Stored blood
The recipient will receive one or two units of old blood >28 days old, as per their chronic transfusion schedule - on or off chelation therapy.
Procedure: Transfusion
A routine medical procedure to transfuse packed red blood cells.
Andre navne:
  • RBC transfusion
Biologisk: Blood

Processing of RBC for transfusion include the following:

  • Fresh
  • Stored
  • Washed
  • Frozen (Cryopreserved)
Andre navne:
  • RBC product
  • Reb Blood Cells
Procedure: Chelation therapy
(non-experimental) A medical procedure that involves the administration of chelating agents to remove heavy metals from the body.
Aktiv komparator: Transfusion of Cryopreserved Blood
The recipient will receive one or two units of cryopreserved (fresh/old) blood, as per their chronic transfusion schedule - off chelation therapy.
Procedure: Transfusion
A routine medical procedure to transfuse packed red blood cells.
Andre navne:
  • RBC transfusion
Biologisk: Blood

Processing of RBC for transfusion include the following:

  • Fresh
  • Stored
  • Washed
  • Frozen (Cryopreserved)
Andre navne:
  • RBC product
  • Reb Blood Cells
Aktiv komparator: Transfusion of Washed Blood
The recipient will receive one or two units of washed (fresh/old) stored blood >28 days old, as per their chronic transfusion schedule - off chelation therapy.
Procedure: Transfusion
A routine medical procedure to transfuse packed red blood cells.
Andre navne:
  • RBC transfusion
Biologisk: Blood

Processing of RBC for transfusion include the following:

  • Fresh
  • Stored
  • Washed
  • Frozen (Cryopreserved)
Andre navne:
  • RBC product
  • Reb Blood Cells

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Non-transferrin-bound Iron Level
Tidsramme: 2 hours after transfusion
2 hours after transfusion

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Columbia University

Samarbejdspartnere

National Heart, Lung, and Blood Institute (NHLBI)

Efterforskere

  • Ledende efterforsker: Steven Spitalnik, MD, Columbia University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. februar 2012

Primær færdiggørelse (Faktiske)

1. marts 2013

Studieafslutning (Faktiske)

1. marts 2013

Datoer for studieregistrering

Først indsendt

14. februar 2012

Først indsendt, der opfyldte QC-kriterier

16. februar 2012

Først opslået (Skøn)

17. februar 2012

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

5. oktober 2016

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

11. august 2016

Sidst verificeret

1. august 2016

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • AAAI1111
  • R01HL098014 (U.S. NIH-bevilling/kontrakt)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

UBESLUTET

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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