Removal of anti-porcine natural antibodies from human and nonhuman primate plasma in vitro and in vivo by a Galalpha1-3Galbeta1-4betaGlc-X immunoaffinity column.

Abstract:

BACKGROUND:Natural antibodies (NAbs) against a terminal alpha1-3 galactosyl (alphaGal) epitope have been identified as the major human anti-pig NAbs. METHODS AND RESULTS:We used two synthetic alphaGal trisaccharides--type 6 (alphaGal6) and type 2(alphaGal2)--linked to an inert matrix to remove NAbs from human plasma in vitro. Flow cytometry indicated that an average of 85% of the NAb binding activity was depleted by adsorption with alphaGal6. By measuring the binding of NAbs to pig peripheral blood mononuclear cells and bone marrow cells, we demonstrated that alphaGal6 was more effective than alphaGal2 in removing NAbs, and the combination of alphaGal6 + alphaGal2 did not further increase removal of NAbs. The specificity of the removal of NAbs (IgM and IgG) reactive with the alphaGal epitope by alphaGal6 matrix was shown by enzyme-linked immunosorbent assay. In vivo studies in nonhuman primates compared plasma perfusion through a alphaGal6 immunoaffinity column with hemoperfusion through a pig liver for changes in blood pressure, hematocrit, platelets, and NAb adsorption. CONCLUSIONS:Both methods reduced the level of anti-pig IgM and IgG xenoreactive antibodies to nearly background, but column perfusion caused less hypotension and reduction in platelets than liver perfusion. Four pig kidneys transplanted into monkeys after column perfusion did not undergo hyperacute rejection, remaining functional for 2-10 days, with a mean functional period of 7 days, demonstrating that a pig kidney can support renal function in a primate.

journal_name

Transplantation

journal_title

Transplantation

authors

Xu Y,Lorf T,Sablinski T,Gianello P,Bailin M,Monroy R,Kozlowski T,Awwad M,Cooper DK,Sachs DH

doi

10.1097/00007890-199801270-00005

subject

Has Abstract

pub_date

1998-01-27 00:00:00

pages

172-9

issue

2

eissn

0041-1337

issn

1534-6080

journal_volume

65

pub_type

杂志文章
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    doi:10.1097/TP.0000000000000252

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  • Nitric oxide synthase activity in renal ischemia-reperfusion injury in the rat: implications for renal transplantation.

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  • Rimonabant affects cyclosporine a, but not tacrolimus pharmacokinetics in renal transplant recipients.

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    pub_type: 杂志文章

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    authors: Amundsen R,Asberg A,Robertsen I,Vethe NT,Bergan S,Hartmann A,Midtvedt K

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  • Corneal Stromal Transplantation With Human-derived Acellular Dermal Matrix for Pellucid Marginal Corneal Degeneration: A Nonrandomized Clinical Trial.

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    pub_type: 杂志文章

    doi:10.1097/00007890-198811000-00025

    authors: Ager A,Fajumi J,Sparshott SM,Ford WL,Butcher GW

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    pub_type: 杂志文章

    doi:10.1097/00007890-199309000-00038

    authors: Schreiber KL,Forman J

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  • Long-term Outcomes After Liver Transplantation Among Human Immunodeficiency Virus-Infected Recipients.

    abstract:BACKGROUND:Early outcomes after human immunodeficiency virus (HIV) + liver transplantation (LT) are encouraging, but data are lacking regarding long-term outcomes and comparisons with matched HIV- patients. METHODS:We examined outcomes among 180 HIV+ LT, and compared outcomes to matched HIV- counterfactuals (Scientifi...

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    doi:10.1097/TP.0000000000000829

    authors: Locke JE,Durand C,Reed RD,MacLennan PA,Mehta S,Massie A,Nellore A,DuBay D,Segev DL

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