About: Roles of osmolality, calcium - Potassium antagonist and calcium in activation and flagellar beating pattern of sturgeon sperm

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About: Roles of osmolality, calcium - Potassium antagonist and calcium in activation and flagellar beating pattern of sturgeon sperm Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The present study shows the roles of osmolality, Ca2+- K+ antagonist and Ca2+ in sperm activation and flagellar beating of sturgeon. Sperm motility was activated at hypoosmolality and suppressed at 175 mOsmol kg?1. Sperm activation was suppressed by 0.35mM K+, but Ca2+ could reverse K+ inhibitory effect at Ca2+: K+ ratio of 0.25. Neither EGTA (a chelator of Ca2+) nor nifedipine (a Ca2+ channel blocker) prevented sperm activation. But, sperm motility and velocity were decreased by EGTA, nifedipine and an inhibitor for Ca2+/calmodulin protein (w-7); suggesting role of Ca2+ signaling after triggering sperm activation through hypoosmolality. Symmetric flagellar beating was turned to asymmetric after activation in w-7; evidence for modulation of Ca2+-binding proteins activity. Sturgeon sperm, similar to salmonids, is immotile in seminal plasma due to high K+ , but the mechanism of sperm activation seems to be closer to freshwater teleosts, where osmolality prohibits sperm activation in seminal plasma. The present study shows the roles of osmolality, Ca2+- K+ antagonist and Ca2+ in sperm activation and flagellar beating of sturgeon. Sperm motility was activated at hypoosmolality and suppressed at 175 mOsmol kg?1. Sperm activation was suppressed by 0.35mM K+, but Ca2+ could reverse K+ inhibitory effect at Ca2+: K+ ratio of 0.25. Neither EGTA (a chelator of Ca2+) nor nifedipine (a Ca2+ channel blocker) prevented sperm activation. But, sperm motility and velocity were decreased by EGTA, nifedipine and an inhibitor for Ca2+/calmodulin protein (w-7); suggesting role of Ca2+ signaling after triggering sperm activation through hypoosmolality. Symmetric flagellar beating was turned to asymmetric after activation in w-7; evidence for modulation of Ca2+-binding proteins activity. Sturgeon sperm, similar to salmonids, is immotile in seminal plasma due to high K+ , but the mechanism of sperm activation seems to be closer to freshwater teleosts, where osmolality prohibits sperm activation in seminal plasma. (en)
Title	Roles of osmolality, calcium - Potassium antagonist and calcium in activation and flagellar beating pattern of sturgeon sperm Roles of osmolality, calcium - Potassium antagonist and calcium in activation and flagellar beating pattern of sturgeon sperm (en)
skos:prefLabel	Roles of osmolality, calcium - Potassium antagonist and calcium in activation and flagellar beating pattern of sturgeon sperm Roles of osmolality, calcium - Potassium antagonist and calcium in activation and flagellar beating pattern of sturgeon sperm (en)
skos:notation	RIV/60076658:12520/11:43876864!RIV12-GA0-12520___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(ED2.1.00/01.0024), P(GA523/09/1793), P(GAP502/11/0090), P(IAA608030801), P(ME10015), S
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Alavi, Sayyed Mohammad Hadi Linhart, Otomar Gela, David Rodina, Marek
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Jihočeská univerzita v Českých Budějovicích / Fakulta rybářství a ochrany vod
http://linked.open...dnocenehoVysledku	227570
http://linked.open...ai/riv/idVysledku	RIV/60076658:12520/11:43876864
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Sturgeon sperm; Nifedipine; K+-Ca2+ antagonist; EGTA; Ca2+ signalling; Asymmetric flagellar beating (en)
http://linked.open.../riv/klicoveSlovo	Asymmetric flagellar beating Ca2+ signalling EGTA K+-Ca2+ antagonist Nifedipine Sturgeon sperm
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[88A0B35D546F]
http://linked.open...i/riv/nazevZdroje	Comparative Biochemistry and Physiology A-Molecular & Integrative Physiology
http://linked.open...in/vavai/riv/obor	GL
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Effect of endocrine disruptors on reproductive parameters and expression of selected genes in mouse gonads. Maturation and Ageing of Fish Spermatozoa: A Comparative Study Between Teleostean and Chondrostean Fish Species as Taxonomically Distant Models. South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses Diversity of Bioenergetics Pathways, Membrane Functions, Signaling Mechanisms and Proteomics of Cryopreserved Sperm of Evolutionary Different Fish Species Application of Paddlefish Sex-reversal and Proteomics in Its Cryopreserved Sperm for Caviar Production
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	160
http://linked.open...iv/tvurceVysledku	Alavi, Sayyed Mohammad Hadi Gela, David Linhart, Otomar Rodina, Marek
http://linked.open...ain/vavai/riv/wos	000293936800009
issn	1095-6433
number of pages	9 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.cbpa.2011.05.026
http://localhost/t...ganizacniJednotka	12520

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