American journal of reproductive immunology (New York, N.Y. : 1989) · 2003
Pre-conceptional natural killer cell activity and percentage as predictors of biochemical pregnancy and spontaneous abortion with normal chromosome karyotype.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Yamada Hideto, Morikawa Mamoru, Kato Emi H, Shimada Shigeki, Kobashi Gen, Minakami Hisanori
Аннотация
PROBLEM: The aim of the present study was to determine whether pre-conceptional natural killer (NK) cell activity and percentage are predictive of subsequent spontaneous abortion in women with recurrent spontaneous abortion (RSA).
METHOD OF STUDY: Pre-conceptional NK cell activity and percentage in peripheral blood of women who had a history of two or more RSA was prospectively assessed. The 51Cr release assay and flow cytometric analysis were performed. A total of 113 RSA women were recruited, and 85 conceived later.
RESULTS: Pre-conceptional NK cell activity/percentage values in women whose next pregnancies ended in biochemical pregnancy and spontaneous abortion with normal fetal karyotype (n = 17, median 47%/17.1%), but spontaneous abortion with abnormal karyotype (n = 9, 27%/15.7%), were higher than those in live births (n = 59, 33%/13.1%). High values of pre-conceptional NK cell activity (> 46%; relative risk 3.6, 95%CI 1.6-8.0) and percentage (> 16.4%; 4.9, 1.7-13.8) were found to predict biochemical pregnancy and spontaneous abortion with normal karyotype in the next pregnancy.
CONCLUSION: Pre-conceptional NK cell abnormalities were predictive of spontaneous abortion with normal fetal karyotype.
METHOD OF STUDY: Pre-conceptional NK cell activity and percentage in peripheral blood of women who had a history of two or more RSA was prospectively assessed. The 51Cr release assay and flow cytometric analysis were performed. A total of 113 RSA women were recruited, and 85 conceived later.
RESULTS: Pre-conceptional NK cell activity/percentage values in women whose next pregnancies ended in biochemical pregnancy and spontaneous abortion with normal fetal karyotype (n = 17, median 47%/17.1%), but spontaneous abortion with abnormal karyotype (n = 9, 27%/15.7%), were higher than those in live births (n = 59, 33%/13.1%). High values of pre-conceptional NK cell activity (> 46%; relative risk 3.6, 95%CI 1.6-8.0) and percentage (> 16.4%; 4.9, 1.7-13.8) were found to predict biochemical pregnancy and spontaneous abortion with normal karyotype in the next pregnancy.
CONCLUSION: Pre-conceptional NK cell abnormalities were predictive of spontaneous abortion with normal fetal karyotype.