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Hypoxic ventilatory profile in the anesthetized rat

100%

Marczak M., Kolesnikova E. E., Pokorski M.

Journal of Physiology and Pharmacology. Supplement

2004

tom 55

nr 3

89-94

In the present study we investigated whether hypocapnia that accompanies hypoxic hyperventilation might affect the biphasic, stimulatory/depressant, ventilatory response to hypoxia. The experiments were carried out in anesthetized, vagotomized, spontaneously breathing, and poikilocapnic rats. The animals were subjected to acute steady-state hypoxia consisting of 12% O2 in N2 in inspiratory mixture. Ventilation and its frequency and volume components were assessed from the integrated electromyographic activity of the diaphragm. We found that despite the development of significant hypocapnia, the hypoxic ventilatory response consisted of rapid stimulation followed by a gradual decline. The frequency component contributed more to the ventilatory increase than that of volume. The results indicate that the hypoxic ventilatory profile in the anesthetized poikilocapnic rat resembles that known to be present during isocapnia. We conclude that hypocapnia neither hampers the hypoxic ventilatory reactivity nor alters the biphasic hypoxic ventilatory profile. These observations may aid planning experimental rat model studies.

Hyperventilation assists proarrhythmia development during delayed repolarization in clofilium-treated, anaesthetized, mechanically ventilated rabbits

84%

Papp H., Sarusi A., Farkas A. S., Takacs H., Kui P., Vincze D., Ivany E., Varro A., Papp J. G., Forster T., Farkas A.

Journal of Physiology and Pharmacology

2016

tom 67

nr 5

Activity of oxidative enzymes in neurolgia in vitro after hyperthermia

84%

Renkawek K., Majkowska J.

Folia Histochemica et Cytobiologica

1984

tom 22

nr 3-4

Ograniczanie wyników

1 Folia Histochemica et Cytobiologica

1 Journal of Physiology and Pharmacology

1 Journal of Physiology and Pharmacology. Supplement

1 Farkas A.

1 Farkas A. S.

1 Forster T.

1 Ivany E.

1 Kolesnikova E. E.

1 Kui P.

1 Majkowska J.

1 Marczak M.

1 Papp H.

1 Papp J. G.

1 Pokorski M.

1 Renkawek K.

1 Sarusi A.

1 Takacs H.

1 Varro A.

1 Vincze D.

1 2016

1 2004

1 1984

Wyniki wyszukiwania

Hypoxic ventilatory profile in the anesthetized rat

Hyperventilation assists proarrhythmia development during delayed repolarization in clofilium-treated, anaesthetized, mechanically ventilated rabbits

Activity of oxidative enzymes in neurolgia in vitro after hyperthermia