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Effects of Hypercapnia on Acute Cellular Rejection after Lung Transplantation in Rats.
- Source :
-
Anesthesiology [Anesthesiology] 2018 Jan; Vol. 128 (1), pp. 130-139. - Publication Year :
- 2018
-
Abstract
- Background: Hypercapnia alleviates pulmonary ischemia-reperfusion injury, regulates T lymphocytes, and inhibits immune reaction. This study aimed to evaluate the effect of hypercapnia on acute cellular rejection in a rat lung transplantation model.<br />Methods: Recipient rats in sham-operated (Wistar), isograft (Wistar to Wistar), and allograft (Sprague-Dawley to Wistar) groups were ventilated with 50% oxygen, whereas rats in the hypercapnia (Sprague-Dawley to Wistar) group were administered 50% oxygen and 8% carbon dioxide for 90 min during reperfusion (n = 8). Recipients were euthanized 7 days after transplantation.<br />Results: The hypercapnia group showed a higher oxygenation index (413 ± 78 vs. 223 ± 24), lower wet weight-to-dry weight ratio (4.23 ± 0.54 vs. 7.04 ± 0.80), lower rejection scores (2 ± 1 vs. 4 ± 1), and lower apoptosis index (31 ± 6 vs. 57 ± 4) as compared with the allograft group. The hypercapnia group showed lower CD8 (17 ± 4 vs. 31 ± 3) and CD68 (24 ± 3 vs. 43 ± 2), lower CD8 T cells (12 ± 2 vs. 35 ± 6), and higher CD4/CD8 ratio (2.2 ± 0.6 vs. 1.1 ± 0.4) compared to the allograft group. Tumor necrosis factor-α (208 ± 40 vs. 292 ± 49), interleukin-2 (30.6 ± 6.7 vs. 52.7 ± 8.3), and interferon-γ (28.1 ± 4.9 vs. 62.7 ± 10.1) levels in the hypercapnia group were lower than those in allograft group. CD4, CD4 T cells, and interleukin-10 levels were similar between groups.<br />Conclusions: Hypercapnia ameliorated acute cellular rejection in a rat lung transplantation model.
- Subjects :
- Allografts immunology
Allografts metabolism
Allografts pathology
Animals
Graft Rejection immunology
Graft Rejection pathology
Hypercapnia immunology
Hypercapnia pathology
Lung immunology
Lung pathology
Lung Transplantation trends
Male
Random Allocation
Rats
Rats, Sprague-Dawley
Rats, Wistar
Species Specificity
T-Lymphocytes immunology
Graft Rejection metabolism
Hypercapnia metabolism
Lung metabolism
Lung Transplantation adverse effects
T-Lymphocytes metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1528-1175
- Volume :
- 128
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Anesthesiology
- Publication Type :
- Academic Journal
- Accession number :
- 29023354
- Full Text :
- https://doi.org/10.1097/ALN.0000000000001908