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Peritoneal Cell-free DNA: an innovative method for determining acute cell damage in peritoneal membrane and for monitoring the recovery process after peritonitis.

Abstract：

BACKGROUND:Cell-free DNA (cfDNA) is present in the peritoneal effluent of stable peritoneal dialysis (PD) patients, but there are no data on cfDNA in PD patients with peritonitis. We investigated the variation of peritoneal cfDNA levels subsequent to peritonitis in PD patients. METHODS:We enrolled 53 PD patients: 30 without any history of systemic inflammation or peritonitis in the last 3 months (group A) and 23 with acute peritonitis (group B). CfDNA was quantified in the peritoneal effluent. Peritoneal samples on days 1, 3, 10, 30 and until day 120 from the start of peritonitis were collected for white blood cells (WBC) count and cfDNA evaluation in group B. RESULTS:Quantitative analysis of cfDNA showed significantly higher levels in group B on day 1, 3, 10 and 30 compared with group A (p < 0.05). A significant positive correlation was observed between cfDNA concentration and WBC on day 1 (rho = 0.89) and day 3 (rho = 0.5) (both, p < 0.05). However, no significant correlation was observed between cfDNA and WBC on days 10 and 30. In group B, peritoneal cfDNA levels tended to progressively decline during follow-up of peritonitis. From this decreasing curve, we estimated that 49 days are necessary to reach the value of 51 genome equivalents (GE)/ml (75th percentile in controls) and 63 days to reach 31 GE/ml (median). CONCLUSION:Our results demonstrate that cfDNA increases in peritoneal effluent of PD patients with peritonitis and tends to progressively decline in step with peritonitis resolution and membrane repair process. Peritoneal cfDNA quantification could be an innovative method to determine acute damage and an inverse index of the repair process.

journal_name

J Nephrol

journal_title

Journal of nephrology

authors

Virzì GM,Milan Manani S,Brocca A,Cantaluppi V,de Cal M,Pastori S,Tantillo I,Zambon R,Crepaldi C,Ronco C

doi

10.1007/s40620-015-0212-2

subject

Has Abstract

pub_date

2016-02-01 00:00:00

pages

111-8

issue

1

eissn

1121-8428

issn

1724-6059

pii

10.1007/s40620-015-0212-2

journal_volume

29

pub_type

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