[HTML][HTML] Frequency-domain techniques for cerebral and functional near-infrared spectroscopy

S Fantini, A Sassaroli - Frontiers in neuroscience, 2020 - frontiersin.org
This article reviews the basic principles of frequency-domain near-infrared spectroscopy (FD-
NIRS), which relies on intensity-modulated light sources and phase-sensitive optical …

Advances in fluorescence microscopy techniques to study kidney function

S Ranjit, L Lanzanò, AE Libby, E Gratton… - Nature Reviews …, 2021 - nature.com
Fluorescence microscopy, in particular immunofluorescence microscopy, has been used
extensively for the assessment of kidney function and pathology for both research and …

Fit-free analysis of fluorescence lifetime imaging data using the phasor approach

S Ranjit, L Malacrida, DM Jameson, E Gratton - Nature protocols, 2018 - nature.com
Fluorescence lifetime imaging microscopy (FLIM) is used in diverse disciplines, including
biology, chemistry and biophysics, but its use has been limited by the complexity of the data …

[HTML][HTML] An autism spectrum disorder-related de novo mutation hotspot discovered in the GEF1 domain of Trio

A Sadybekov, C Tian, C Arnesano, V Katritch… - Nature …, 2017 - nature.com
The Rho guanine nucleotide exchange factor (RhoGEF) Trio promotes actin polymerization
by directly activating the small GTPase Rac1. Recent studies suggest that autism spectrum …

[HTML][HTML] Structural and functional characterization of human stem-cell-derived retinal organoids by live imaging

AW Browne, C Arnesano… - … & visual science, 2017 - iovs.arvojournals.org
Purpose: Human pluripotent stem cell (hPSC)-derived retinal organoids are a platform for
investigating retinal development, pathophysiology, and cellular therapies. In contrast to …

[HTML][HTML] Imaging fibrosis and separating collagens using second harmonic generation and phasor approach to fluorescence lifetime imaging

S Ranjit, A Dvornikov, M Stakic, SH Hong, M Levi… - Scientific reports, 2015 - nature.com
In this paper we have used second harmonic generation (SHG) and phasor approach to
auto fluorescence lifetime imaging (FLIM) to obtain fingerprints of different collagens and …

[HTML][HTML] Recent advances in high speed diffuse optical imaging in biomedicine

MB Applegate, RE Istfan, S Spink, A Tank, D Roblyer - APL Photonics, 2020 - pubs.aip.org
Diffuse optical imaging (DOI) is a label-free, safe, inexpensive, and quantitative imaging
modality that provides metabolic and molecular contrast in tissue using visible or near …

[HTML][HTML] Label-free fluorescence lifetime and second harmonic generation imaging microscopy improves quantification of experimental renal fibrosis

S Ranjit, E Dobrinskikh, J Montford, A Dvornikov… - Kidney international, 2016 - Elsevier
All forms of progressive renal diseases develop a final pathway of tubulointerstitial fibrosis
and glomerulosclerosis. Renal fibrosis is usually quantified using histological staining, a …

Multicomponent analysis of phasor plot in a single pixel to calculate changes of metabolic trajectory in biological systems

S Ranjit, R Datta, A Dvornikov… - The journal of physical …, 2019 - ACS Publications
Phasor FLIM in cells undergoing oxidative stress and in mice liver sections have shown the
presence of a third autofluorescent component indicative of lipid droplets along with free and …

Measuring the effect of a Western diet on liver tissue architecture by FLIM autofluorescence and harmonic generation microscopy

S Ranjit, A Dvornikov, E Dobrinskikh… - Biomedical optics …, 2017 - opg.optica.org
The phasor approach to auto-fluorescence lifetime imaging was used to identify and
characterize a long lifetime species (LLS)(~ 7.8 ns) in livers of mice fed with a Western diet …