Behavioural switching during oscillations of intracellular Ca2+ concentration in free-swimming human sperm
| Autor: | Elis Torrezan-Nitao, Héctor Alejandro Guidobaldi, Christopher L.R. Barratt, Laura Cecilia Giojalas, Stephen J. Publicover |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
endocrine system
lcsh:QH471-489 Hyperactivation urogenital system chemistry.chemical_element Free swimming HUMAN General Medicine Calcium lcsh:Gynecology and obstetrics Sperm CALCIUM purl.org/becyt/ford/1 [https] chemistry HYPERACTIVATION Ca2 concentration Biophysics lcsh:Reproduction purl.org/becyt/ford/1.6 [https] human activities lcsh:RG1-991 reproductive and urinary physiology Intracellular SPERM |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET Reproduction and Fertility, Vol 2, Iss 1, Pp L5-L7 (2021) |
| Popis: | A human sperm must swim to the egg to fertilise it. To do this the sperm uses different types of swimming (behaviours) as they are needed. When we watch sperm swimming we see that they regularly change behaviour, sometimes repeatedly switching between two different types. Calcium ions inside cells are crucial in controlling many cell functions and in sperm they play a key role in regulating their behaviour. Here we have measured the concentration of calcium ions inside swimming human sperm. We found that in 12/35 (34%) of the cells we assessed, the concentration of calcium changed repeatedly, averaging more than one cycle of rise and fall per minute. These changes in the concentration of calcium ions occurred as the sperm switched swimming stroke, suggesting that oscillation of calcium concentration is involved in controlling the switching of sperm behaviour. Impaired sperm motility is an important cause of subfertility in men. Understanding how sperm behaviour is controlled will allow the development of treatments that can rescue the fertility of sperm with impaired motility. Fil: Torrezan Nitao, Elis. University of Birmingham; Reino Unido Fil: Guidobaldi, Héctor Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Biología Celular y Molecular; Argentina Fil: Giojalas, Laura Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Biología Celular y Molecular; Argentina Fil: Barratt, Christopher. University of Dundee; Reino Unido Fil: Publicover, Stephen. University of Birmingham; Reino Unido |
| Databáze: | OpenAIRE |
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