scholarly journals In vivo imaging of the depth-resolved optic axis of birefringence in human skin

2020 ◽  
Vol 45 (17) ◽  
pp. 4919
Author(s):  
Qingyun Li ◽  
David D. Sampson ◽  
Martin Villiger
Keyword(s):  
Human Skin ◽  
In Vivo Imaging ◽  
Optic Axis

scholarly journals 272 Structural changes in human skin after topical application of glucocorticoids assessed by in vivo imaging technologies

2017 ◽  
Vol 137 (5) ◽  
pp. S46 ◽  
Author(s):  
S. Jung ◽  
J. Lademann ◽  
M. Darvin ◽  
C. Richter ◽  
C.B. Pedersen ◽  
...  
Keyword(s):  
Human Skin ◽  
Topical Application ◽  
In Vivo Imaging ◽  
Structural Changes ◽  
Imaging Technologies

scholarly journals Miniaturized photoacoustic probe for in vivo imaging of subcutaneous microvessels within human skin

2019 ◽  
Vol 9 (5) ◽  
pp. 807-807 ◽  
Author(s):  
Wuyu Zhang ◽  
Haigang Ma ◽  
Zhongwen Cheng ◽  
Zhiyang Wang ◽  
Lan Zhang ◽  
...  
Keyword(s):  
Human Skin ◽  
In Vivo Imaging

In Vivo Imaging of ZnO Nanoparticles from Sunscreen on Human Skin with a Mobile Multiphoton Tomograph

2014 ◽  
Vol 5 (1) ◽  
pp. 42-47 ◽  
Author(s):  
Hans Georg Breunig ◽  
Martin Weinigel ◽  
Karsten König
Keyword(s):  
Human Skin ◽  
Zno Nanoparticles ◽  
In Vivo Imaging

Fluorescent proteins for in vivo imaging, where's the biliverdin?

2020 ◽  
Vol 48 (6) ◽  
pp. 2657-2667
Author(s):  
Felipe Montecinos-Franjola ◽  
John Y. Lin ◽  
Erik A. Rodriguez
Keyword(s):  
Hydrogen Peroxide ◽  
In Vivo Imaging ◽  
Near Infrared ◽  
Fluorescent Protein ◽  
Fluorescent Proteins ◽  
Fluorescent Imaging ◽  
Infrared Light ◽  
Red Fluorescent Protein ◽  
Color Palette

Noninvasive fluorescent imaging requires far-red and near-infrared fluorescent proteins for deeper imaging. Near-infrared light penetrates biological tissue with blood vessels due to low absorbance, scattering, and reflection of light and has a greater signal-to-noise due to less autofluorescence. Far-red and near-infrared fluorescent proteins absorb light >600 nm to expand the color palette for imaging multiple biosensors and noninvasive in vivo imaging. The ideal fluorescent proteins are bright, photobleach minimally, express well in the desired cells, do not oligomerize, and generate or incorporate exogenous fluorophores efficiently. Coral-derived red fluorescent proteins require oxygen for fluorophore formation and release two hydrogen peroxide molecules. New fluorescent proteins based on phytochrome and phycobiliproteins use biliverdin IXα as fluorophores, do not require oxygen for maturation to image anaerobic organisms and tumor core, and do not generate hydrogen peroxide. The small Ultra-Red Fluorescent Protein (smURFP) was evolved from a cyanobacterial phycobiliprotein to covalently attach biliverdin as an exogenous fluorophore. The small Ultra-Red Fluorescent Protein is biophysically as bright as the enhanced green fluorescent protein, is exceptionally photostable, used for biosensor development, and visible in living mice. Novel applications of smURFP include in vitro protein diagnostics with attomolar (10−18 M) sensitivity, encapsulation in viral particles, and fluorescent protein nanoparticles. However, the availability of biliverdin limits the fluorescence of biliverdin-attaching fluorescent proteins; hence, extra biliverdin is needed to enhance brightness. New methods for improved biliverdin bioavailability are necessary to develop improved bright far-red and near-infrared fluorescent proteins for noninvasive imaging in vivo.

Sign in / Sign up

Export Citation Format

Share Document