Erythropoietin prevents lymphoid apoptosis but has no effect on survival in experimental sepsis
| Autor: | Huseyin Baskin, Tolga F Koroglu, Osman Yilmaz, Mehtap Yuksel Egrilmez, Necati Gokmen, Kazim Tugyan |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
animal diseases
Apoptosis Thymus Gland digestive system Sepsis hemic and lymphatic diseases In Situ Nick-End Labeling Intestine Small medicine Animals Rats Wistar Cecum Erythropoietin business.industry bacterial infections and mycoses medicine.disease Rats Pediatrics Perinatology and Child Health Immunology business Spleen medicine.drug |
| Zdroj: | Pediatric Research. 74:148-153 |
| ISSN: | 1530-0447 0031-3998 |
| DOI: | 10.1038/pr.2013.86 |
| Popis: | Lymphoid apoptosis in sepsis is associated with poor outcome, and prevention of apoptosis frequently improves survival in experimental models of sepsis. Recently, erythropoietin (EPO) was shown to protect against lipopolysaccharide (LPS)-induced mortality. As cecal ligation and puncture (CLP) is a clinically more relevant model of sepsis, we evaluated the effect of EPO on CLP-induced lymphoid tissue apoptosis and mortality.Young Wistar rats were subjected to polymicrobial sepsis by CLP. EPO (5,000 U/kg intraperitoneal) was administered 30 min before CLP and then 1 and 4 h after CLP. Spleen, thymus, and small intestine were harvested at 24 h and assessed for apoptosis by terminal deoxynucleotidyl transferase nick-end labeling (TUNEL) and caspase-3 staining. A separate group of animals was followed up for mortality.Splenic, thymic, and intestinal apoptosis was increased after CLP; administration of EPO significantly decreased apoptosis as determined by TUNEL and caspase-3 staining. Final survival in the CLP mortality study was 30% in both saline and EPO groups.Our results provide the first evidence that EPO attenuates lymphoid apoptosis in the CLP model of sepsis. However, EPO is not associated with a survival benefit in the CLP model of sepsis. |
| Databáze: | OpenAIRE |
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