RGD Reference Report - A long-acting prostacyclin agonist with thromboxane inhibitory activity for pulmonary hypertension. - Rat Genome Database

Send us a Message



Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   

A long-acting prostacyclin agonist with thromboxane inhibitory activity for pulmonary hypertension.

Authors: Kataoka, M  Nagaya, N  Satoh, T  Itoh, T  Murakami, S  Iwase, T  Miyahara, Y  Kyotani, S  Sakai, Y  Kangawa, K  Ogawa, S 
Citation: Kataoka M, etal., Am J Respir Crit Care Med. 2005 Dec 15;172(12):1575-80. Epub 2005 Sep 28.
RGD ID: 1601439
Pubmed: PMID:16192456   (View Abstract at PubMed)
DOI: DOI:10.1164/rccm.200501-102OC   (Journal Full-text)

RATIONALE: The balance between prostacyclin and thromboxane plays an important role in the regulation of pulmonary vascular tone. Recently, we developed ONO-1301, a novel, long-acting prostacyclin agonist with thromboxane synthase inhibitory activity. OBJECTIVES: We investigated whether modulation of prostacyclin/thromboxane balance by ONO-1301 ameliorates monocrotaline-induced pulmonary hypertension in rats. METHODS: After subcutaneous injection of monocrotaline or vehicle, rats were randomized to receive repeated subcutaneous administration of ONO-1301 or vehicle twice per day for 3 wk. MEASUREMENTS AND MAIN RESULTS: There was significant development of pulmonary hypertension 3 wk after monocrotaline injection. Treatment with ONO-1301 significantly attenuated the increases in right ventricular systolic pressure and ratio of right ventricular weight to body weight in monocrotaline rats. Furthermore, ONO-1301 significantly attenuated the increase in medial wall thickness of peripheral pulmonary arteries in monocrotaline rats. The half-life of plasma ONO-1301 concentration after a single subcutaneous administration was approximately 5.6 h. A single administration of ONO-1301 increased plasma cyclic adenosine 3', 5'-monophosphate level, which lasted at least up to 8 h. Treatment with ONO-1301 significantly decreased plasma 11-dehydro-thromboxane B2, a metabolite of thromboxane, in monocrotaline rats. Finally, Kaplan-Meier survival curves demonstrated that repeated administration of ONO-1301 improved survival rate in monocrotaline rats compared with vehicle administration (80 vs. 30% in 6-wk survival). CONCLUSIONS: Subcutaneous administration of a novel prostacyclin agonist (ONO-1301) markedly attenuated monocrotaline-induced pulmonary hypertension and improved survival in rats. The beneficial effects of ONO-1301 may occur through its long-lasting stimulation of cyclic adenosine 3', 5'-monophosphate and inhibition of thromboxane synthase.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
hypertension  ISOTbxas1 (Rattus norvegicus)1601439; 1601439 RGD 
hypertension  IDA 1601439 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Tbxas1  (thromboxane A synthase 1)

Genes (Mus musculus)
Tbxas1  (thromboxane A synthase 1, platelet)

Genes (Homo sapiens)
TBXAS1  (thromboxane A synthase 1)


Additional Information