ArticleBrazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica2013
Evidence for the involvement of peripheral β-adrenoceptors in delayed liquid gastric emptying induced by dipyrone, 4-aminoantipyrine, and antipyrine in rats.
Article in Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 5 citations in OpenAlex.
- Effects of dipyrone on the digestive tract.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2019Review
- Dipyrone in association with atropine inhibits the effect on gastric emptying induced by hypoglycemia in rats.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2017Article
- Effect of selective β-adrenoceptor blockade and surgical resection of the celiac-superior mesenteric ganglion complex on delayed liquid gastric emptying induced by dipyrone, 4-aminoantipyrine, and antipyrine in rats.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2016Article
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2 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Dipyrone (Dp), 4-aminoantipyrine (AA), and antipyrine (At) delay liquid gastric emptying (GE) in rats. We evaluated adrenergic participation in this phenomenon in a study in male Wistar rats (250-300 g) pretreated subcutaneously with guanethidine (GUA), 100 mg·kg-1·day-1, or vehicle (V) for 2 days before experimental treatments. Other groups of animals were pretreated intravenously (iv) 15 min before treatment with V, prazosin (PRA; 1 mg/kg), yohimbine (YOH; 3 mg/kg), or propranolol (PRO; 4 mg/kg), or with intracerebroventricular (icv) administration of 25 µg PRO or V. The groups were treated iv with saline or with 240 µmol/kg Dp, AA, or At. GE was determined 10 min later by measuring the percentage of gastric retention (%GR) of saline labeled with phenol red 10 min after gavage. %GR (mean ± SE, n=8) indicated that GUA abolished the effect of Dp (GUA vs V=31.7 ± 1.6 vs 47.1 ± 2.3%) and of At (33.2 ± 2.3 vs 54.7 ± 3.6%) on GE and significantly reduced the effect of AA (48.1 ± 3.2 vs 67.2 ± 3.1%). PRA and YOH did not modify the effect of the drugs. %GR (mean ± SE, n=8) indicated that iv, but not icv, PRO abolished the effect of Dp (PRO vs V=29.1 ± 1.7 vs 46.9 ± 2.7%) and At (30.5 ± 1.7 vs 49 ± 3.2%) and significantly reduced the effect of AA (48.4 ± 2.6 vs 59.5 ± 3.1%). These data suggest activation of peripheral β-adrenoceptors in the delayed GE induced by phenylpyrazolone derivatives.
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