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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 PLoS+One
2017 ; 12
(3
): e0173154
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Evaluation of allograft contamination and decontamination at the Treviso Tissue
Bank Foundation: A retrospective study of 11,129 tissues
#MMPMID28267776
Paolin A
; Trojan D
; Petit P
; Coato P
; Rigoli R
PLoS One
2017[]; 12
(3
): e0173154
PMID28267776
show ga
Microbiological contamination of retrieved tissues has become a very important
topic and a critical aspect in the safety of allografts. We have analysed
contamination in 11,129 tissues with a longitudinal contamination profile for
each individual tissue. More specifically, 10,035 musculoskeletal tissues and
1,094 cardiovascular tissues were retrieved from a total of 763 multi-tissue
donors, of whom 105 were heart-beating donors as well as organ donors, while the
remaining 658 were non-heart beating donors and tissue donors only. All tissues
were decontaminated twice, the first time immediately after retrieval and the
second time after processing. Each tissue was submitted to microbiological
culture three times, i.e., upon retrieval (Time 1), after the first
decontamination (Time 2) and after the second decontamination (Time 3). The
contamination rate for musculoskeletal tissues was 52%, 16.2% and 0.5% at Time 1,
2 and 3, respectively. The contamination rate for cardiovascular tissues was 84%,
42% and 6%. More than one strain was simultaneously present in 10.8% of
musculoskeletal tissues and 44.6% of cardiovascular tissues. Out of 8,560
non-heart-beating donor musculoskeletal tissues, 4,689 (54.8%), 1,383 (16.2%) and
42 (0.5%) were contaminated at Time 1, Time 2 and Time 3, respectively. Out of
1,475 heart-beating donor musculoskeletal tissues, 522 (35.4%) 113 (7.7%) and 2
(0.1%) tissues were found to be contaminated at Time 1, 2 and 3, respectively.
Out of 984 non-heart beating donor cardiovascular tissues, 869 (88.3%), 449
(45.6%) and 69 (7%) proved positive at Time 1, 2 and 3 respectively, while 50
(45.5%) and 10 (9.1%) heart-beating donor cardiovascular tissues were
contaminated at Time 1 and 2. No tissue was contaminated at Time 3. Based on our
methods, the two-step decontamination approach is mandatory in order to
drastically reduce the number of tissues found to be positive at the end of the
process.