7 research outputs found
170426_dataset_EWTEC
This dataset contains the research materials suporting the paper with title "Hydrodynamic response of a jacket-frame mounted WEC sub-system of a novel hybrid wind-wave energy converter", published in the proceedings of the 12th European Wave and Tidal Energy Conference (EWTEC) 2017
Reversing cortical porosity: Cortical pore infilling in preclinical models of chronic kidney disease
Purpose
Chronic kidney disease (CKD) patients have a high incidence of fracture due in part to cortical porosity. The goal of this study was to study cortical pore infilling utilizing two rodent models of progressive CKD.
Methods
Exp 1: Female C57Bl/6J mice (16-week-old) were given dietary adenine (0.2%) to induce CKD for 10 weeks after which calcium water supplementation (Ca-H2O; 1.5% and 3%) was given to suppress PTH for another 4 weeks. Exp 2: Male Cy/+ rats were aged to ~30 weeks with baseline porosity assessed using in vivo μCT. A second in vivo scan followed 5-weeks of Ca-H2O (3%) supplementation.
Results
Exp 1: Untreated adenine mice had elevated blood urea nitrogen (BUN), parathyroid hormone (PTH), and cortical porosity (~2.6% porosity) while Ca-H2O lowered PTH and cortical porosity (0.5–0.8% porosity). Exp 2: Male Cy/+ rats at baseline had variable porosity (0.5%–10%), but after PTH suppression via Ca-H2O, cortical porosity in all rats was lower than 0.5%. Individual pore dynamics measured via a custom MATLAB code demonstrated that 85% of pores infilled while 12% contracted in size.
Conclusion
Ca-H2O supplementation causes net cortical pore infilling over time and imparted mechanical benefits. While calcium supplementation is not a viable clinical treatment for CKD, these data demonstrate pore infilling is possible and further research is required to examine clinically relevant therapeutics that may cause net pore infilling in CKD
Multi-region exome sequencing reveals genomic evolution from preneoplasia to lung adenocarcinoma
There has been a dramatic increase in the detection of lung nodules, many of which are
preneoplasia atypical adenomatous hyperplasia (AAH), adenocarcinoma in situ (AIS), minimally
invasive adenocarcinoma (MIA) or invasive adenocarcinoma (ADC). The molecular landscape
and the evolutionary trajectory of lung preneoplasia have not been well defined. Here, we
perform multi-region exome sequencing of 116 resected lung nodules including AAH (n = 22),
AIS (n = 27), MIA (n = 54) and synchronous ADC (n = 13). Comparing AAH to AIS, MIA and
ADC, we observe progressive genomic evolution at the single nucleotide level and demarcated
evolution at the chromosomal level supporting the early lung carcinogenesis model from AAH
to AIS, MIA and ADC. Subclonal analyses reveal a higher proportion of clonal mutations in
AIS/MIA/ADC than AAH suggesting neoplastic transformation of lung preneoplasia is
predominantly associated with a selective sweep of unfit subclones. Analysis of multifocal
pulmonary nodules from the same patients reveal evidence of convergent evolution