Consistent with other reports, our data demonstrate the PSV in successfully stented SMAs remains higher than the PSV threshold of 275 cm/s used for the diagnosis of high-grade native SMA stenosis. In addition, in-stent SMA PSVs did not significantly change over DUS surveillance for patients who did not undergo reintervention. Thus, obtaining a baseline DUS early after mesenteric stenting should be considered to compare future surveillance DUS. An increase above this baseline or an in-stent SMA PSV approaching 500 cm/s should be considered suspicious for ISS, but larger prospective studies will be required to validate these preliminary findings.
Objectives: Female gender has been shown to negatively affect the outcomes of surgical bypass for peripheral arterial disease (PAD). We examined gender-related disparities in outcomes of endovascular PAD procedures in a large population-based study. Methods: We used discharge data from California hospitals to identify patients who had PAD interventions during 2005 to 2009. Logistic regression was used for 12-month reintervention, and Cox proportional hazard regression was used for amputation-free survival comparisons. Results: A total of 25 635 patients had endovascular procedures (11 389 [44.4%] women). Women were more likely than men (34.5% vs 30.1%, P < .0001) to have critical limb ischemia (CLI). Twelve-month reintervention rate in women was similar to men. Amputation-free survival was better among women than men (hazard ratio 0.84, 95% confidence interval [CI] 0.76-0.93, P ¼ .0006). Conclusion: Despite presenting more frequently with CLI, women had better amputation-free survival than men following endovascular procedures. Future research should determine whether findings favor one type of PAD treatment modality over another for women.
Glucocorticoids serve as important therapeutic agents in diseases of inflammation, but clinical use, especially in advanced septic shock, remains controversial because of the unpredictable response. Prior studies correlate human glucocorticoid receptor (hGR) isoforms with a decreased response to steroid therapy. Further analysis of additional hGR isoforms may improve the understanding of the steroid response. Ninety-seven human volunteers' blood samples were surveyed for hGR isoforms. An isoform matching National Center for Biotechnology Informatics (NCBI) hGRα (hGR NCBI) served as a reference. Two isoforms were of particular interest-one isoform had three nonsynonymous single-nucleotide polymorphisms (SNPs) (hGR NS-1), and the second had a single-nucleotide deletion (hGR DL-1) resulting in a truncated protein. Transactivation potentials were measured using a luciferase reporter assay. Human glucocorticoid receptor NS-1 had activity more than twice of hGR NCBI, whereas hGR DL-1 demonstrated less than 10% of the activity of hGR NCBI. Cotransfection of two isoforms revealed that the presence of hGR NS-1 increased transactivation potential, whereas hGR DL-1 decreased activity. Synthetic constructs isolating individual and paired SNPs of hGR NS-1 were created to identify the SNP responsible for hyperactivity. Transactivation studies revealed a SNP within the ligand-binding domain exerted the greatest influence over hyperactivity. In evaluating the response to hydrocortisone, hGR NCBI and hGR NS-1 displayed an increased dose-dependent response, but hGR NS-1 had a response more than twice hGR NCBI. Characterization of the novel hyperactive hGR NS-1 provides insight into a possible mechanism underlying the unpredictable response to steroid treatment.
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