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Effects of forskolin on the longitudinal internal resistance (ri)in rabbit sinus node strips

100%

Tuganowski W., Korczynska I., Wasik K., Wojcik B., Bukowski M.

Acta Physiologica Polonica

1989

tom 40

nr 2

Tuganowski, W., Korczyńska, I., Wąsik, K., Wójcik В. and Bukowski, M.; Effects of forskolin on the longitudinal internal resistance (ri) in rabbit sinus node strips. Aclta physiol. pod., 1989, 40 (2): 164-170. The effect of several concentrations of 7-0-hemisucoinyl, 7-deacetyl forskolin on n was studied by means of microelectrode and single sucrose gap techniques. Twenity µmol·1⁻¹ of forskolin added ifco to the sucrose gap lowered ri 15% below the control value. The drug applied at 50 µmol·l⁻¹ initially decreased ri by 31%, and then it increased the resistance by 43% above the control, value. The possible mechanisms underlying these effects are discussed in terms of cAMP and Ca action on the cell coupling.

Matrix metalloproteinases activity in distal stumps of rat sciatic nerves 1-7 days following transection

86%

Pietrucha-Dutczak M., Lewin-Kowalik J., Gorka D., Korczynska I., Matuszek I., Wolwender K., Larysz-Brysz M.

Acta Neurobiologiae Experimentalis

2001

tom 61

nr 3

The effect of biogenic amines serotonin, dopamine, octopamine and tyramine on aggressive behaviour of workers of the red wood ant Formica polyctena

72%

Szczuka A., Wnuk A., Korczynska I., Symonowicz B., Gonzalez Szwacka A., Mazurkiewicz P., Francikowski J., Mirecka A., Kostowski W., Godzinska E. J.

Acta Neurobiologiae Experimentalis

2009

tom 69

nr 3

We investigated the effect of abdominal injections of 4 biogenic amines – serotonin (5-HT), dopamine (DA), octopamine (OA) and tyramine (TA) – on behaviour of workers of the red wood ant Formica polyctena in 4 types of aggression tests. The ants were observed during a 10 min encounter with a nestmate, a conspecifi c ant from an alien colony, a worker of another ant species (Formica fusca), and a small larva of the house cricket (Acheta domesticus). DA administration had the most important effect on ant aggressive behaviour. DA injections exerted a stimulatory effect on threats directed to F. fusca and to larvae of A. domesticus and on biting behaviour directed to larvae of A. domesticus. TA suppressed the frequency and the duration of biting behaviour directed to these larvae, although that effect was signifi cant only when the effects of TA were compared with those of DA and 5-HT. TA also reduced self-grooming behaviour, but only in tests with alien conspecifi cs. Other effects of biogenic amine administration included a stimulatory effect of OA on other active behaviour displayed by the ants during the tests with A. domesticus, inhibitory effects of 5-HT, OA and TA on allogrooming of a nestmate, and lenghtening of the latency to the fi rst antennal contact with a nestmate observed in TA and 5-HT-treated ants. The most important effects of biogenic amine administration were observed in the case of interactions of the ants with crickets. Support: grant MNiSW N N303 3075 33.

Ograniczanie wyników

2 Acta Neurobiologiae Experimentalis

1 Acta Physiologica Polonica

3 Korczynska I.

1 Bukowski M.

1 Francikowski J.

1 Godzinska E. J.

1 Gonzalez Szwacka A.

1 Gorka D.

1 Kostowski W.

1 Larysz-Brysz M.

1 Lewin-Kowalik J.

1 Matuszek I.

1 Mazurkiewicz P.

1 Mirecka A.

1 Pietrucha-Dutczak M.

1 Symonowicz B.

1 Szczuka A.

1 Tuganowski W.

1 Wasik K.

1 Wnuk A.

1 Wojcik B.

1 Wolwender K.

1 2009

1 2001

1 1989

Wyniki wyszukiwania

Effects of forskolin on the longitudinal internal resistance (ri)in rabbit sinus node strips

Matrix metalloproteinases activity in distal stumps of rat sciatic nerves 1-7 days following transection

The effect of biogenic amines serotonin, dopamine, octopamine and tyramine on aggressive behaviour of workers of the red wood ant Formica polyctena