
handle: 10261/175614
[ES] La presente invención se refiere a un método para la detección y/o cuantificación de Streptococcus pneumoniae, una bacteria Gram-positiva que es un importante patógeno humano, en una muestra biológica aislada, mediante biosensores magneto-amperométricos, que comprende detectar un fragmento del gen lytA de dicho microorganismo, amplificado por PCR, preferiblemente PCR asimétrica o PCR asimétrica directa, mediante su hibridación a una sonda específica totalmente complementaria de una región de dicho fragmento amplificado. Asimismo, la presente invención también se refiere al uso de los cebadores SEQ ID NO: 3 y 4 así como de las sondas SEQ ID NO: 1 y/o SEQ ID NO: 2 para llevar a cabo dicha detección. El biosensor desarrollado para detectar S. pneumoniae hace que sea aplicable a distintos tipos de muestras clínicas procedentes de pacientes infectados con esta bacteria u otras relacionadas. Preferiblemente la muestra clinica es un fluido biológico aislado como sangre, líquido cefalorraquídeo, saliva u orina.
[EN] The present invention relates to a method for the detection and/or quantification of Streptococcus pneumoniae, a Gram-positive bacteria being an important human pathogen, in an isolated biological sample, through magneto-amperometric biosensors, comprising detecting fragments of the lytA gene of said microorganism, amplified through PCR, preferably asymmetric PCR or direct asymmetric PCR, by means of the hybridisation thereof to a specific probe fully complementary to a region of said amplified fragmento Furthermore, the present invention additionally refers to the use of primers SEQ ID NO: 3 and 4 together with probes SEQ ID NO: 1 and/or SEQ ID NO: 2 for the purpose of carrying out said detection. The biosensor developed to detect S. pneumoniae renders it applicable to different types of clinical samples proceeding from patients infected with this bacteria or other related bacteria. Preferably the clinical sample is an isolated biological fluid such as blood, cephalorachidian liquid, saliva or urine.
Consejo Superior de Investigaciones Científicas (España), Universidad Complutense de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Respiratorias
T3 Traducción de patente europea
Peer reviewed
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