[Development of a PCR for the detection and quantification of parasitism by Demodex folliculorum infestation in biopsies of skin neoplasms periocular area].
OBJECTIVE
To standardize the relative quantification by mass of tissue parasitism by Demodex folliculorum infestation from neoplastic skin biopsies periocular using molecular amplification to study the possible relationship of the appearance of eyelid basal cell carcinoma with the presence and density of the mite in later works.


METHODS
A quantitative PCR was developed real-time probes TaqMan. PCR was tested in a pilot 46 actual biopsy samples nodular basal cell carcinoma series.


RESULTS
The sensitivity was placed with a detection limit of between 1 and 10 copies / μl. 50% (23/46) of the biopsies were positive for D. folliculorum. The specificity was 100% confirmed by sequencing.


CONCLUSIONS
The technique shows good results for sensitivity and specificity that can make it useful as a tool for studies of cause and effect D. folliculorum and basal cell carcinoma.
Alberto Tenorio Abreu, Hospital Juan Ramón Jiménez, Ronda Exterior Norte s/n 21005 Huelva, Spain. albeteno@hotmail.com.
A
A
Tenorio-Abreu
J C
JC
Sánchez-España
L E
LE
Naranjo-González
M C
MC
González-Gallego
C
C
Hidalgo-Grass
C
C
Ruíz-Frutos
D000818:Animals; D001706:Biopsy / Q000379:methods; D002280:Basal Cell Carcinoma / Q000150:complications / Q000469:parasitology*; D006801:Humans; D008924:Mite Infestations / Q000469:parasitology*; D008925:Mites / Q000235:genetics*; D016133:Polymerase Chain Reaction / Q000379:methods*; D012680:Sensitivity and Specificity; D012867:Skin / Q000469:parasitology; D012878:Skin Neoplasms / Q000150:complications / Q000469:parasitology*