To assess whether better cardiovascular health is associated with a lower long-term risk of CVD in women with a history of adverse pregnancy outcomes (APOs). Using data from the UK Biobank prospective cohort, we included 2,263 participants with prior APOs and 107,260 participants without prior APOs. Life's Essential 8 (LE8) score was assessed at baseline. Multivariable-adjusted Cox models were used to estimate the associations between LE8 score and CVD events. Over a median 13.5 years of follow-up, 11,134 incident CVD events were documented. Among women with prior APOs, the incidence of total CVD was significantly lower in the top tertile compared to the bottom tertile, with a HR (95% CI) of 0.43 (0.29, 0.65). A similar trend was observed in women without APOs, with an HR (95% CI) of 0.55 (0.53, 0.58). With respect to the individual CVD outcomes, among women with APOs, only the associations with coronary heart disease, HR (95% CI) for T3 vs T1: 0.30 (0.17, 0.55) and atrial fibrillation, 0.47 (0.24, 0.91), achieved statistical significance. Women with high LE8 score and prior APOs had a similar long-term cardiovascular risk compared to women with high LE8 score and no prior APOs, 0.95 (0.63, 1.44). Among women with a history of APOs, better cardiovascular health as assessed using LE8 was associated with a significantly lower incidence of CVD, particularly coronary heart disease and atrial fibrillation. The excess risk associated with APOs appears to be attenuated among those with a high LE8 score.
Background: Women with a history of adverse pregnancy outcomes (APOs) are at increased risk of developing cardiovascular disease (CVD). Whether maintaining higher cardiovascular health is associated with a lower risk of CVD in this population is not known. Aims: To evaluate the association between Life’s Essential 8 (LE8) and incident CVD in women with a history of APOs. Methods: We included 2,263 participants with a prior diagnosis of APOs (including hypertensive disorders of pregnancy, gestational diabetes, placental abruption, small for gestational age, or preterm birth) and 107,260 parous participants without a history of APOs from the UK Biobank, all of whom were free of CVD at baseline. LE8 was calculated at baseline (range 0-100). Multivariable-adjusted Cox models were used to estimate the hazard ratio (HR) and 95% confidence interval (CI) between LE8 score and incident total and subtypes of CVD. We also examined the interaction between LE8 score and incident CVD among individuals with and without a history of APOs. Results: Over a mean 13.5 years of follow-up, 197 incident CVD events were documented in women with a history of APOs. Compared to women in the bottom tertile of LE8 score (<67), those in the top tertile (>76) had a lower incidence of total CVD, HR (95% CI) of 0.43 (0.29, 0.65), CHD [0.31 (0.17, 0.56)] and AF [0.46 (0.23, 0.91)]. We observed a significant interaction between history of APOs, LE8 score, and incident CVD ( Table 1 ). Women with a history of APO who maintained high LE8 score were at similar risk as those without APO with a high LE8 score, 0.95 (0.63-1.43), whereas there was an excess risk observed for those with an intermediate (HR with vs. without APO: 1.73 vs 1.25) and low LE8 scores (HR with vs. without APO: 2.48 vs 1.81). Conclusion: Among women with a history of APOs, better cardiovascular health as assessed using the LE8 score was associated with a significantly lower incidence of incident CVD. Additionally, women with a history of APOs who maintained high LE8 scores had similar risk of CVD as women without a history of APOs.
Abstract B(A) phenotype individuals have normal B antigen and a small amount of A antigen on the RBCs with anti-A in the plasma. Some highly potent monoclonal anti-A reagents are capable of agglutinating B(A) RBCs, which therefore usually results in a discrepancy between RBC and plasma ABO grouping. To date, five B(A) alleles (ABO*B(A)01, B(A)02, B(A)03, B(A)04 , and B(A)05) have been defined by nucleotide sequences. To get a more complete picture of B(A) phenotypes found in the Chinese population and resolve blood donor typing problems caused by B(A) alleles, a serologic and molecular study of nine unrelated Chinese individuals and three families carrying B(A) alleles was conducted. Allele B(A)02 with a 700C>G mutation, allele B(A)04 with a single 640A>G substitution, and allele B(A)05 with a 641T>C mutation were detected in multigenerational families and unrelated blood donors. Neither the B(A)01 nor B(A)03 alleles with 703A>G substitutions were observed in this study. In addition, a polymerase chain reaction with a sequence-specific primer genotyping assay was developed for rapid identification of B(A)02, B(A)04 , and B(A)05 alleles using genomic DNA samples. Immunohematology 2007;23:69–74.
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