Biomarkers.

Background: Apolipoprotein ε4 allele (APOE4) is the strongest genetic risk factor for late-onset Alzheimer's disease (AD) with females having higher risk than males. Compared with non-carriers, cognitively normal, middle-aged APOE4 carriers have lower cerebral blood flow (CBF) decades before clinical symptoms appear. Early intervention to protect CBF would be critical for APOE4 carriers to mitigate AD progression.

Biomarkers.

Background: Apolipoprotein ε4 allele (APOE4) is the strongest genetic risk factor for late-onset Alzheimer's disease (AD). Compared with non-carriers, cognitively normal APOE4 individuals have shown brain atrophy and lower cerebral blood flow (CBF) decades before AD pathological and clinical symptoms appear. The goal of the study is to determine if using Sirolimus, an FDA-approved mTOR inhibitor, could restore the brain volumes in structures related to cognitive functions and global CBF (gCBF) for asymptomatic APOE4 carriers compared with non-carriers.

Alzheimer's Imaging Consortium.

Background: Apolipoprotein e4 allele (APOE4) is the strongest genetic risk factor for late-onset Alzheimer's disease (AD) with females having higher risk than males. Compared with non-carriers, cognitively normal, middle-aged APOE4 carriers have lower cerebral blood flow (CBF) decades before clinical symptoms appear. Early intervention to protect CBF would be critical for APOE4 carriers to mitigate AD progression.

Alzheimer's Imaging Consortium.

Background: Apolipoprotein e4 allele (APOE4) is the strongest genetic risk factor for late-onset Alzheimer's disease (AD). Compared with non-carriers, cognitively normal APOE4 individuals have shown brain atrophy and lower cerebral blood flow (CBF) decades before AD pathological and clinical symptoms appear. The goal of the study is to determine if using Sirolimus, an FDA-approved mTOR inhibitor, could restore the brain volumes in structures related to cognitive functions and global CBF (gCBF) for asymptomatic APOE4 carriers compared with non-carriers.

Predicting operative mortality in patients who undergo elective open thoracoabdominal aortic aneurysm repair.

Background: We have developed a model aimed at identifying preoperative predictors of operative mortality in patients who undergo elective, open thoracoabdominal aortic aneurysm (TAAA) repair. We converted this model into an intuitive nomogram to aid preoperative counseling.

Methods: We retrospectively analyzed data from 2884 elective, open TAAA repairs performed between 1986 and 2023 in a single practice.