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Título del libro: 2014 36th Annual International Conference Of The Ieee Engineering In Medicine And Biology Society, Embc 2014
Título del capítulo: Imaging of the 3D dynamics of flagellar beating in human sperm

Autores UNAM:
JAIME ARTURO PIMENTEL CABRERA; ALBERTO DARSZON ISRAEL; GABRIEL ISAAC CORKIDI BLANCO;

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Autores externos:

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Idioma:
Inglés

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Año de publicación:
2014

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Palabras clave:

human; male; movement (physiology); physiology; procedures; spermatozoon motility; spermatozoon tail; three dimensional imaging; Humans; Imaging, Three-Dimensional; Male; Movement; Sperm Motility; Sperm Tail

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Resumen:

The study of the mechanical and environmental factors that regulate a fundamental event such as fertilization have been subject of multiple studies. Nevertheless, the microscopical size of the spermatozoa and the high beating frequency of their flagella (up to 20 Hz) impose a series of technological challenges for the study of the mechanical factors implicated. Traditionally, due to the inherent characteristics of the rapid sperm movement, and to the technological limitations of microscopes (optical or confocal) to follow in three dimensions (3D) their movement, the analysis of their dynamics has been studied in two dimensions, when the head is confined to a surface. Flagella propel sperm and while their head can be confined to a surface, flagellar movement is not restricted to 2D, always displaying 3D components. In this work, we present a highly novel and useful tool to analyze sperm flagella dynamics in 3D. The basis of the method is a 100 Hz oscillating objective mounted on a bright field optical microscope covering a 16 microns depth space at a rate of ~ 5000 images per second. The best flagellum focused subregions were associated to their respective Z real 3D position. Unprecedented graphical results making evident the 3D movement of the flagella are shown in this work and supplemental material illustrating a 3D animation using the obtained experimental results is also included. © 2014 IEEE.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
9781424479290
Editorial:
Institute of Electrical and Electronics Engineers Inc.

Tipo de producto:
Conference Paper

DOI:
10.1109/EMBC.2014.6943561