Відмінності між версіями «Incredible Lucrative Power Of CASK»

Поточна версія на 08:02, 2 травня 2017

Hypercapnia, which is widely used experimentally to increase CBFv (Hutchinson et al., 2006), was chosen as an intervention to compare the ��ODT responses without and with Intralipid enhancement. Mild hypercapnia was induced by switching the anesthetic incubator from 100% O2 to a mixture of 95% O2 and 5% CO2. The left panels (a, d) and the right panels (e, h) in Fig.?5 are the CASK en-face and side-view 3D ��ODT images (FOV: 1.2?��?0.5?��?1?mm3) obtained to assess hypercapnia-induced CBFv increases (i.e., ��CBFv?=?CBFvhypercapnia???CBFvnormocapnia) without and with Intralipid injection, respectively. We measured the quantitative CBFv changes within individual capillaries (from randomly selected 27 ROIs) in each image groups as plotted in panels (i, k) together with their statistical ��CBFv results in panels (j, l). A comparison in panels (j, l) indicates that despite the higher baseline CBFv with Intralipid (l), hypercapnia further increased CBFv from 0.49?��?0.13?mm/s to 0.65?��?0.13?mm/s whereas without Intralipid (j) it changed from 0.27?��?0.08?mm/s to 0.35?��?0.10?mm/s. Interestingly, the relative change of ��CBFv was similar with (32.1%) and without (30.8%) Intralipid (p?=?0.51, rank sum test). This result indicates that contrast-enhanced ��ODT with Intralipid preserves quantitative detection of further increases in CBFv even when baseline flows are much higher than without Intralipid, CPI-637 chemical structure which indicates that they are not saturated. Note also that while the relative ��CBFv was equivalent without and with Intralipid, the absolute CBFv increases were significantly (p?www.selleckchem.com/products/oicr-9429.html responses). In parallel to ��CBFv quantification, the dramatically enhanced sensitivity of c-��ODT (approaching ��OCA as shown in Fig.?4) allowed us to evaluate vessel dilation (e.g. vessel P) from side projections (panels g, h), in which ��OCA tends to show serious artifacts (i.e., shadows of large vessels). In vivo imaging of brain tumor microenvironments is of relevance for studying tumor angiogenesis (Das and Marsden, 2013) and as a potential tool for improving early tumor detection and for monitoring responses to treatment (Vakoc et al., 2009). ��ODT is highly suitable for this type of in vivo imaging, owing to its high resolution, large FOV and quantitative flow measurement. To illustrate this, a xenograft tumor model was used, based on implantation of HT1080-GFP cells in the brain cortex of immunodeficient mice. The ��OCA and ��ODT images of a tumor on day 16 after tumor cell implantation are shown in Fig.?6.