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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1992-5-21
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pubmed:abstractText |
The effects of phenylbiguanide (PBG) on phrenic nerve and pulmonary C-fibers were studied in anesthetized spontaneously breathing rabbits with unilateral vagotomy. Right atrial injections of PBG at low (10 micrograms/kg) and high (100 micrograms/kg) dose resulted in a shallow tachypnea and apneusis followed by tachypnea, respectively, and these effects were blocked by procaine treatment of the vagus nerve. Also, the injection of PBG (100 micrograms/kg) still evoked the rapid shallow breathing preceded by apneusis in carotid chemoreceptor-denervated animals. Vigorous stimulation of pulmonary C-fibers by PBG (100 micrograms/kg) coincided with apneusis and the response was followed by a more modest increase in activity associated with tachypnea. Administration of PBG (10 micrograms/kg) into the right atrium caused an increase in pulmonary C-fiber activity associated with tachypnea. However, a small dose of PBG injected into the aortic circulation had no effect on the C-fiber activity but did inhibit respiration. These results suggest that the stimulation of pulmonary C-fibers via PBG injection can produce both inspiratory apnea and tachypnea.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0034-5687
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
87
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
165-81
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pubmed:dateRevised |
2009-11-11
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pubmed:meshHeading |
pubmed-meshheading:1565890-Administration, Topical,
pubmed-meshheading:1565890-Animals,
pubmed-meshheading:1565890-Biguanides,
pubmed-meshheading:1565890-Bronchi,
pubmed-meshheading:1565890-Female,
pubmed-meshheading:1565890-Heart Atria,
pubmed-meshheading:1565890-Injections,
pubmed-meshheading:1565890-Lung,
pubmed-meshheading:1565890-Male,
pubmed-meshheading:1565890-Nerve Fibers,
pubmed-meshheading:1565890-Procaine,
pubmed-meshheading:1565890-Pulmonary Circulation,
pubmed-meshheading:1565890-Rabbits,
pubmed-meshheading:1565890-Respiration Disorders,
pubmed-meshheading:1565890-Vagus Nerve
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pubmed:year |
1992
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pubmed:articleTitle |
Pulmonary C-fibers elicit both apneusis and tachypnea in the rabbit.
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pubmed:affiliation |
Department of Physiology, Fukushima Medical College, Japan.
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pubmed:publicationType |
Journal Article
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