Treatment of platelet concentrates and plasma with riboflavin and UV light: Impact in bacterial reduction.
Transfus Clin Biol
; 25(3): 197-203, 2018 Sep.
Article
en En
| MEDLINE
| ID: mdl-29656962
ABSTRACT
OBJECTIVES:
Transfusion of hemocomponents is essential for clinical and surgical procedures and therefore their safety has increased. An option for pathogen reduction includes the combination of riboflavin and UV light. To our knowledge, there are no studies in Latin America that demonstrate the effectiveness of the pathogen reduction in hemocomponents. The objective of this work was to evaluate the efficiency of a pathogens reduction system in platelets concentrates (PC) and plasma. MATERIALS ANDMETHODS:
PC and plasma were contaminated with Escherichia coli, Klebsiella pneumoniae, Streptococcus pyogenes and Staphylococcus epidermidis at 104 to 106 CFU and subjected to bacterial reduction. After bacterial reduction, hemocomponents were subjected to cultivation of surviving bacteria by automated method and classical colonies quantification. Additionally, quality control testing was performed in order to confirm the integrity of platelets and coagulation laboratory values in plasma before and after bacterial reduction.RESULTS:
The bacterial death in PC/plasma was expressed by Logarithmic Reduction Value as follows for both strains (E. coli and S. pyogenes) 4/4, 5/5 and 6/6; for K. pneumoniae 2.54/2.23, 2.94/2.22 and 3.44/2.98, for S. epidermidis 4/4, 3.11/5 and 3.23/4.19, for 104, 105 and 106 CFU, respectively. In PC and plasma, platelet count, pH (at 22°C), activated partial thromboplastin time (aPTT), prothrombin time (PT), fibrinogen, factor VIII and total proteins (TP) were slightly modified.CONCLUSIONS:
UV light with riboflavin is able to reduce an important number of pathogens in hemocomponents; however, the bacterial reduction is influenced by the nature and quantity of the pathogen.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Plasma
/
Riboflavina
/
Bacterias
/
Rayos Ultravioleta
/
Plaquetas
/
Fármacos Fotosensibilizantes
/
Transfusión de Plaquetas
/
Seguridad de la Sangre
Límite:
Humans
Idioma:
En
Revista:
Transfus Clin Biol
Asunto de la revista:
HEMATOLOGIA
Año:
2018
Tipo del documento:
Article