1 March 2011 Quantitative microscopy and nanoscopy of sickle red blood cells performed by wide field digital interferometry
Author Affiliations +
J. of Biomedical Optics, 16(3), 030506 (2011). doi:10.1117/1.3556717
Abstract
We have applied wide-field digital interferometry (WFDI) to examine the morphology and dynamics of live red blood cells (RBCs) from individuals who suffer from sickle cell anemia (SCA), a genetic disorder that affects the structure and mechanical properties of RBCs. WFDI is a noncontact, label-free optical microscopy approach that can yield quantitative thickness profiles of RBCs and measurements of their membrane fluctuations at the nanometer scale reflecting their stiffness. We find that RBCs from individuals with SCA are significantly stiffer than those from a healthy control. Moreover, we show that the technique is sensitive enough to distinguish classes of RBCs in SCA, including sickle RBCs with apparently normal morphology, compared to the stiffer crescent-shaped sickle RBCs. We expect that this approach will be useful for diagnosis of SCA and for determining efficacy of therapeutic agents.
Natan T. Shaked, Lisa L. Satterwhite, George A. Truskey, Adam P. Wax, Marilyn J. Telen, "Quantitative microscopy and nanoscopy of sickle red blood cells performed by wide field digital interferometry," Journal of Biomedical Optics 16(3), 030506 (1 March 2011). http://dx.doi.org/10.1117/1.3556717
Submission: Received ; Accepted
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KEYWORDS
Blood

Interferometry

Microscopy

Video

Super resolution microscopy

Refractive index

Therapeutic agents

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