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in response to kathy's post re: preeclampsia and ana:
some studies say no, others indicate a link.
Yes:
A prospective study on the occurrence of autoantibodies in low-risk pregnancies
Leif S. Matthiesena, *, Göran Berga, Jan Ernerudhb and Thomas Skoghc
a The Division of Obstetrics and Gynecology, The Department of Health and Environment, Faculty of Health Sciences, Linköping University, S-581 85 Linköping, Sweden
b The Division of Transfusion Medicine and Clinical Immunology, The Department of Health and Environment, Faculty of Health Sciences, Linköping University, Linköping, Sweden
c The Division of Rheumatology, The Department of Health and Environment, Faculty of Health Sciences, Linköping University, Linköping, Sweden
Accepted 31 August 1998. Available online 4 March 1999.
Abstract
Objective: This investigation was done to study the prevalence of anti-nuclear antibodies (ANA), anti-cardiolipin antibodies (aCL), and rheumatoid factor (RF), in presumed healthy women during their pregnancies.
Study design: During an 18 month period blood samples were taken in the first, second and third trimester from 1200 pregnant women, representing a low-risk population. Clinical data on the pregnancy outcome were obtained by birth statistics after their deliveries. The diagnoses of preeclampsia, intrauterine growth retardation, fetal death, or abruptio placentae were stated in 57 of these women. An age- and parity-matched control group of 207 women with normal pregnancy outcome was drawn from the same low-risk population (n=1200). A nonpregnant control group consisted of 157 women. The prevalence of ANA (immunofluorescence microscopy on HEp-2 cells), aCL-immunoglobulin G (enzyme-linked immunosorbent a__say), and RF (latex agglutination test) in preeclampsia, intrauterine growth retardation, fetal death, or abruptio placentae were compared to the normal pregnancies, and to the nonpregnant controls.
Results: ANA occurred significantly more often (P<0.05) in pregnancies complicated by preeclampsia when compared to normal pregnancies. aCL occurred sparsely in normal as well as complicated pregnancies. RF was infrequently seen among all women in this study.
Conclusion: An a__sociation was noted between the occurrence of ANA and preeclampsia. However, this a__sociation was too insensitive to use as a clinical tool.
Author Keywords: Anti-nuclear antibodies; Anti-cardiolipin antibodies; Rheumatoid factor; Human pregnancy; Preeclampsia
*Corresponding author.
No:
Antinuclear antibody testing in obstetric patients
Request Article
I E Afman, Medical Student (Current Address: Department of Obstetrics and Gynaecology, University of Groningen, The Netherlands)
H S Cronjé, MMed (O&G), FCOG (SA), MD, Department of Obstetrics and Gynaecology, University of the Free State, Bloemfontein
M G Schoon, MMed (O&G), PhD, Department of Obstetrics and Gynaecology, University of the Free State, Bloemfontein
G Joubert, MSc, Department of Biostatistics, University of the Free State, Bloemfontein
P N Badenhorst, MMed (Haematol), PhD, Department of Haematology and Cell Biology, University of the Free State, Bloemfontein
Abstract
Objectives. To a__sess possible a__sociations between the presence of antinuclear antibodies (ANAs) and pregnancy outcome in order to determine the significance of this test in obstetric practice.
Methods. A case-control study was performed on 408 patients admitted to an obstetric high care unit and on whom ANA testing was consecutively performed. The study group consisted of 46 patients who tested positive for ANAs and a control group of 92 patients who tested negative for ANAs. In addition to demographic data, indications for admission and pregnancy outcome were compared between the two groups.
Results. Of the 46 Patients with a positive ANA result, 28 had an antinuclear pattern, 13 an anticytoplasmic pattern and 5 an antinuclear and an anticytoplasmic pattern. No significant differences were observed between the two groups (ANA-positive and negative) with regard to demographic data, indication for admission, clinical and laboratory data, and pregnancy outcome. The patients were also tested for anticardiolipin antibodies, and significantly more patients were severe pre-eclampsia tested positive (24% versus 4.7%, p = 0.01). No difference in HIV status and presence of autoantibodies was found between the two groups.
Conclusion. The presence of ANAs was not a__sociated with adverse pregnancy outcome. Therefore routine patient testing for ANAs in an obstetric high-care unit is not recommended.
S Afr Med J 2003: 93:932-937
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