UNIDEF   23986
UNIDAD DE INVESTIGACION Y DESARROLLO ESTRATEGICO PARA LA DEFENSA
Unidad Ejecutora - UE
artículos
Título:
Influence of the formulations in removing eggs of Pediculus humanus capitis (Phthiraptera: Pediculidae)
Autor/es:
ISABEL ORTEGA-INSAURRALDE; ARIEL C. TOLOZA; MARIA INES PICOLLO; CLAUDIA VASSENA
Revista:
PARASITOLOGY RESEARCH
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2014 vol. 113 p. 3439 - 3444
ISSN:
0932-0113
Resumen:
Abstract Head lice lay eggs in human head hairs in order toreproduce. There is a difficulty associated to the process ofdetaching these eggs: they are tightly gripped to the hair by asecretion produced by female head lice. The physical removalof eggs has become an important part of treatment of louseinfestations. The finding of new products to loosen the eggs isnecessary to avoid mistaken diagnosis or reinfestations. Thiswork aimed to compare different kinds of pediculicide formulationsin order to find if their presentations represented differencesin the egg remover effect. We also wanted to presenta new device to test the efficacy of the egg remover formulations.Products with creamy presentations (Bio infant lice andegg remover® and hair conditioner) and one containingdimethicone (Nyda®) showed the lower mean forces comparedwith the control (lower mean forces represented bestremoval activity). Whereas, the Biferdil egg remover® (gel)and Nopucid Tribit® (hydroalcoholic lotion) had no egg removaleffect, presenting the highest mean forces (177.82 and189.99 mN, respectively) compared with the control.Additionally, we proposed a removal index (RI) to comparethe efficacy of different products on the egg removal activity(RI>0, good performance). The higher index values were forBio infant lice and egg remover® (0.72) and Biferdil hairconditioner® (0.58). The lowest index values were forBiferdil egg remover® (−0.26) and Nopucid Tribit®(−0.35).The formulation of over the counter pediculicides inthe egg remover effect was discussed.