Tags

Type your tag names separated by a space and hit enter

Antiphospholipid antibody tests: spreading the net.
Ann Rheum Dis. 2005 Nov; 64(11):1639-43.AR

Abstract

OBJECTIVE

To examine the hypothesis that testing for new antiphospholipid antibody specificities may help to identify the antiphospholipid syndrome (APS) in patients with systemic lupus erythematosus (SLE) with thrombosis who are repeatedly negative for anticardiolipin antibodies (aCL) and/or lupus anticoagulant (LA).

METHODS

Three groups of patients with SLE were studied: (a) SLE/APS (n = 56): 51 female, mean (SD) age 46 (11) years, fulfilling 1999 Sapporo criteria for the APS; (b) SLE/thrombosis (n = 56): 53 female, age 42.6 (12) years, all with a history of thrombosis and persistently negative for aCL and/or LA; (c) SLE only (n = 56): 53 female, age 40 (11) years, without a history of thrombotic events. aCL and LA were retested in all samples. All patients were tested for anti-beta(2)-glycoprotein I (anti-beta(2)GPI) and antiprothrombin antibodies (aPT) by coating prothrombin on irradiated plates or using phosphatidylserine-prothrombin complex as the antigen (aPS-PT).

RESULTS

Anti-beta(2)GPI were only present in patients from the SLE/APS group, all of whom were also positive for aCL. aPT and aPS-PT were also more commonly found in SLE/APS than in SLE/thrombosis or SLE only groups (54% v 5%, p<0.0001 or v 16%, p<0.0001 for aPT and 63% v 2%, p<0.0001 or v 11%, p<0.0001 for aPS-PT, respectively). No differences were found between SLE/thrombosis and SLE only groups (p = 1.5 for beta(2)GPI, p = 0.1 for aPT, and p = 0.1 for aPS-PT).

CONCLUSION

Testing for aPT in patients with SLE with thrombosis, but persistently negative for aCL and LA, may be helpful in some selected cases. Anti-beta(2)GPI are not present in patients who are negative for aCL.

Authors+Show Affiliations

Lupus Research Unit, The Rayne Institute, St Thomas' Hospital, London SE1 7EH, UK. maria.bertolaccini@kcl.ac.ukNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

15817655

Citation

Bertolaccini, M L., et al. "Antiphospholipid Antibody Tests: Spreading the Net." Annals of the Rheumatic Diseases, vol. 64, no. 11, 2005, pp. 1639-43.
Bertolaccini ML, Gomez S, Pareja JF, et al. Antiphospholipid antibody tests: spreading the net. Ann Rheum Dis. 2005;64(11):1639-43.
Bertolaccini, M. L., Gomez, S., Pareja, J. F., Theodoridou, A., Sanna, G., Hughes, G. R., & Khamashta, M. A. (2005). Antiphospholipid antibody tests: spreading the net. Annals of the Rheumatic Diseases, 64(11), 1639-43.
Bertolaccini ML, et al. Antiphospholipid Antibody Tests: Spreading the Net. Ann Rheum Dis. 2005;64(11):1639-43. PubMed PMID: 15817655.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antiphospholipid antibody tests: spreading the net. AU - Bertolaccini,M L, AU - Gomez,S, AU - Pareja,J F P, AU - Theodoridou,A, AU - Sanna,G, AU - Hughes,G R V, AU - Khamashta,M A, Y1 - 2005/04/07/ PY - 2005/4/9/pubmed PY - 2005/12/13/medline PY - 2005/4/9/entrez SP - 1639 EP - 43 JF - Annals of the rheumatic diseases JO - Ann Rheum Dis VL - 64 IS - 11 N2 - OBJECTIVE: To examine the hypothesis that testing for new antiphospholipid antibody specificities may help to identify the antiphospholipid syndrome (APS) in patients with systemic lupus erythematosus (SLE) with thrombosis who are repeatedly negative for anticardiolipin antibodies (aCL) and/or lupus anticoagulant (LA). METHODS: Three groups of patients with SLE were studied: (a) SLE/APS (n = 56): 51 female, mean (SD) age 46 (11) years, fulfilling 1999 Sapporo criteria for the APS; (b) SLE/thrombosis (n = 56): 53 female, age 42.6 (12) years, all with a history of thrombosis and persistently negative for aCL and/or LA; (c) SLE only (n = 56): 53 female, age 40 (11) years, without a history of thrombotic events. aCL and LA were retested in all samples. All patients were tested for anti-beta(2)-glycoprotein I (anti-beta(2)GPI) and antiprothrombin antibodies (aPT) by coating prothrombin on irradiated plates or using phosphatidylserine-prothrombin complex as the antigen (aPS-PT). RESULTS: Anti-beta(2)GPI were only present in patients from the SLE/APS group, all of whom were also positive for aCL. aPT and aPS-PT were also more commonly found in SLE/APS than in SLE/thrombosis or SLE only groups (54% v 5%, p<0.0001 or v 16%, p<0.0001 for aPT and 63% v 2%, p<0.0001 or v 11%, p<0.0001 for aPS-PT, respectively). No differences were found between SLE/thrombosis and SLE only groups (p = 1.5 for beta(2)GPI, p = 0.1 for aPT, and p = 0.1 for aPS-PT). CONCLUSION: Testing for aPT in patients with SLE with thrombosis, but persistently negative for aCL and LA, may be helpful in some selected cases. Anti-beta(2)GPI are not present in patients who are negative for aCL. SN - 0003-4967 UR - https://www.unboundmedicine.com/medline/citation/15817655/Antiphospholipid_antibody_tests:_spreading_the_net_ L2 - https://ard.bmj.com/lookup/pmidlookup?view=long&amp;pmid=15817655 DB - PRIME DP - Unbound Medicine ER -