[Change in the electrophysiological parameters of rat oocytes maturing in vivo].
The membrane potential (MP) and input membrane resistance (R) were measured in the immature (1) and mature ovulated (2) rat eggs. The population 1 is homogeneous enough: in 78.3% of all oocytes MP equaled --18 +/- 0.3 mV and R = 3 +/- 0.6 mO; 21.7% of cells had MP = --2 +/- 0.9 MV and R = 3.5 +/- 0.6 mO. The population 2 was divided by the indices under study into 4 groups. The respective values of MP and R in each of 4 groupd 5.5 +/- 0.5 mO, c) --15 +/- 0.6 mV and 7 +/- 1.0 mO, d) --3 +/- 0.4 mV and 9 +/- 0.5 mO. A suggestion is put forward that MP and R of the oocytes change with respect to the maturation stage.
D000818:Animals; D004553:Electric Conductivity; D005260:Female; D008564:Membrane Potentials; D008839:Microelectrodes; D009865:Oocytes / Q000254:growth & development / Q000502:physiology*; D010063:Ovum / Q000502:physiology*; D011247:Pregnancy; D051381:Rats
Izmenenie élektrofiziologicheskikh parametrov ootsitov krys pri sozrevaniia in vivo.