Prostanoid release after lung transplantation
(1996) In The Journal of Heart and Lung Transplantation 15(10). p.999-1004- Abstract
- BACKGROUND: Increased pulmonary vascular resistance is frequently seen after lung transplantation. Thromboxane A2 is a potent vasoconstrictor of pulmonary arteries. Thromboxane-elicited vasoconstriction can ben counteracted by prostacyclin. The effects of lung transplantation on the biosynthesis of these substances were investigated. METHODS: Pulmonary artery flush perfusion with a low-potassium dextran glucose solution was performed in six donor pigs. After a 24-hour storage period, the left lung was transplanted into a recipient, followed by right pneumonectomy, making the recipient's survival entirely dependent on the transplanted lung. A sham operation (bilateral thoracotomy, right pneumonectomy) ws done in six pigs. the urine contents... (More)
- BACKGROUND: Increased pulmonary vascular resistance is frequently seen after lung transplantation. Thromboxane A2 is a potent vasoconstrictor of pulmonary arteries. Thromboxane-elicited vasoconstriction can ben counteracted by prostacyclin. The effects of lung transplantation on the biosynthesis of these substances were investigated. METHODS: Pulmonary artery flush perfusion with a low-potassium dextran glucose solution was performed in six donor pigs. After a 24-hour storage period, the left lung was transplanted into a recipient, followed by right pneumonectomy, making the recipient's survival entirely dependent on the transplanted lung. A sham operation (bilateral thoracotomy, right pneumonectomy) ws done in six pigs. the urine contents of the stable thromboxane A2 metabolite 2,3-dinor-thromboxane B2 and the stable prostacyclin metabolite 2,3-dinor-6-keto-protaglandin F1 alpha were measured with a gas chromatography-mass spectrometry method. RESULTS: One to four hours after reperfusion, thromboxane A2 production reached its maximum in both groups: it ws fivefold the basal value in the transplanted group, but only twofold in the sham-operated group, the difference being significant (p < 0.005). Twenty to twenty-four hours after reperfusion, thromboxane A2 production had stabilized at about twofold the basal value in both the transplanted and in the sham-operated group. Four to eight hours after reperfusion, prostacyclin production reached 15 times the basal value in the transplanted group and twofold in the sham-operated group, the difference being significant (p < 0.05). Twenty to twenty-four hours after reperfusion, prostacyclin production was 18-fold the basal value in the transplanted group and sevenfold in the sham-operated group. No correlation was found between the thromboxane or prostacyclin production and the pulmonary vascular resistance or the mean pulmonary arterial pressure. CONCLUSIONS: The thromboxane A2 production increased fivefold after lung transplantation, with a concomitant 15-fold increase in prostacyclin synthesis, which might have counteracted the vasoconstrictor effect of thromboxane. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1111047
- author
- Kimblad, P O ; Green, K ; Sjöberg, Trygve LU and Steen, Stig LU
- organization
- publishing date
- 1996
- type
- Contribution to journal
- publication status
- published
- subject
- in
- The Journal of Heart and Lung Transplantation
- volume
- 15
- issue
- 10
- pages
- 999 - 1004
- publisher
- Elsevier
- external identifiers
-
- pmid:8913917
- scopus:0029917404
- ISSN
- 1557-3117
- language
- English
- LU publication?
- yes
- id
- abfe2306-b6f8-4844-be7a-c0d6ad15fcb3 (old id 1111047)
- date added to LUP
- 2016-04-01 11:44:02
- date last changed
- 2022-01-26 17:23:20
@article{abfe2306-b6f8-4844-be7a-c0d6ad15fcb3, abstract = {{BACKGROUND: Increased pulmonary vascular resistance is frequently seen after lung transplantation. Thromboxane A2 is a potent vasoconstrictor of pulmonary arteries. Thromboxane-elicited vasoconstriction can ben counteracted by prostacyclin. The effects of lung transplantation on the biosynthesis of these substances were investigated. METHODS: Pulmonary artery flush perfusion with a low-potassium dextran glucose solution was performed in six donor pigs. After a 24-hour storage period, the left lung was transplanted into a recipient, followed by right pneumonectomy, making the recipient's survival entirely dependent on the transplanted lung. A sham operation (bilateral thoracotomy, right pneumonectomy) ws done in six pigs. the urine contents of the stable thromboxane A2 metabolite 2,3-dinor-thromboxane B2 and the stable prostacyclin metabolite 2,3-dinor-6-keto-protaglandin F1 alpha were measured with a gas chromatography-mass spectrometry method. RESULTS: One to four hours after reperfusion, thromboxane A2 production reached its maximum in both groups: it ws fivefold the basal value in the transplanted group, but only twofold in the sham-operated group, the difference being significant (p < 0.005). Twenty to twenty-four hours after reperfusion, thromboxane A2 production had stabilized at about twofold the basal value in both the transplanted and in the sham-operated group. Four to eight hours after reperfusion, prostacyclin production reached 15 times the basal value in the transplanted group and twofold in the sham-operated group, the difference being significant (p < 0.05). Twenty to twenty-four hours after reperfusion, prostacyclin production was 18-fold the basal value in the transplanted group and sevenfold in the sham-operated group. No correlation was found between the thromboxane or prostacyclin production and the pulmonary vascular resistance or the mean pulmonary arterial pressure. CONCLUSIONS: The thromboxane A2 production increased fivefold after lung transplantation, with a concomitant 15-fold increase in prostacyclin synthesis, which might have counteracted the vasoconstrictor effect of thromboxane.}}, author = {{Kimblad, P O and Green, K and Sjöberg, Trygve and Steen, Stig}}, issn = {{1557-3117}}, language = {{eng}}, number = {{10}}, pages = {{999--1004}}, publisher = {{Elsevier}}, series = {{The Journal of Heart and Lung Transplantation}}, title = {{Prostanoid release after lung transplantation}}, volume = {{15}}, year = {{1996}}, }