دورية أكاديمية
Estimating Young's modulus of zona pellucida by micropipette aspiration in combination with theoretical models of ovum.
| العنوان: | Estimating Young's modulus of zona pellucida by micropipette aspiration in combination with theoretical models of ovum. |
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| المؤلفون: | Khalilian M; Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran., Navidbakhsh M, Valojerdi MR, Chizari M, Yazdi PE |
| المصدر: | Journal of the Royal Society, Interface [J R Soc Interface] 2010 Apr 06; Vol. 7 (45), pp. 687-94. Date of Electronic Publication: 2009 Oct 14. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Royal Society Country of Publication: England NLM ID: 101217269 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1742-5662 (Electronic) Linking ISSN: 17425662 NLM ISO Abbreviation: J R Soc Interface Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: London : Royal Society, [2004]- |
| مواضيع طبية MeSH: | Models, Theoretical*, Ovum/*physiology , Zona Pellucida/*physiology, Animals ; Elasticity ; Fertilization ; Hardness ; Humans ; Mammals ; Mice ; Oocytes |
| مستخلص: | The zona pellucida (ZP) is the spherical layer that surrounds the mammalian oocyte. The physical hardness of this layer plays a crucial role in fertilization and is largely unknown because of the lack of appropriate measuring and modelling methods. The aim of this study is to measure the biomechanical properties of the ZP of human/mouse ovum and to test the hypothesis that Young's modulus of the ZP varies with fertilization. Young's moduli of ZP are determined before and after fertilization by using the micropipette aspiration technique, coupled with theoretical models of the oocyte as an elastic incompressible half-space (half-space model), an elastic compressible bilayer (layered model) or an elastic compressible shell (shell model). Comparison of the models shows that incorporation of the layered geometry of the ovum and the compressibility of the ZP in the layered and shell models may provide a means of more accurately characterizing ZP elasticity. Evaluation of results shows that although the results of the models are different, all confirm that the hardening of ZP will increase following fertilization. As can be seen, different choices of models and experimental parameters can affect the interpretation of experimental data and lead to differing mechanical properties. |
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| تواريخ الأحداث: | Date Created: 20091016 Date Completed: 20100520 Latest Revision: 20240326 |
| رمز التحديث: | 20240326 |
| مُعرف محوري في PubMed: | PMC2842786 |
| DOI: | 10.1098/rsif.2009.0380 |
| PMID: | 19828504 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1742-5662 |
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| DOI: | 10.1098/rsif.2009.0380 |