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|Titolo:||Resistance to activated protein C, associated with oral contraceptives use; effect of formulations, duration of assumption, and doses of oestro-progestins|
|Autori interni:||OLIVIERI, Oliviero|
|Data di pubblicazione:||1996|
|Abstract:||Resistance to activated protein C (APC-R) is at present considered the most frequent laboratory abnormality in patients with deep vein thrombosis. An increased risk for venous thrombosis is associated with the use of oral contraceptives (OCs). We recently described a statistically significant association between APC-R status and oral contraceptives use in a healthy group of women. We re-evaluated 50 healthy women taking low-dose combination OCs in order to consider a possible correlation between the APC sensitivity ratio (APC-SR) and different oral contraceptive formulations. Seven women showed an APC ratio ltoreq 2 (APC-resistant). Only one of the seven women was found to be heterozygous for Leiden factor V mutation. We observed no significant differences between normally sensitive and APC-resistant women in terms of duration of OC use, amount of estrogenic or progestogenic dose, or type of formulation. We conclude that APC-resistance associated with oral contraceptives use seems to occur only in predisposed subjects (in our results, about 12% of the healthy population).|
|Appare nelle tipologie:||01.01 Articolo in Rivista|
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