Abstract: Device for simultaneous and rapid determination of the fertility hormones estradiol, progesterone, luteinizing hormone and prolactin in saliva comprising a biosensor (10) provided with four working electrodes (12, 13, 14, 15), an auxiliary electrode (11) and a reference electrode (16) and a single potentiostatic circuit (2) having a single channel, which shares the auxiliary and reference electrodes, a multiplexer (3) to multiplex the signals from the four working electrodes, a transimpedance amplifier (4), an analog-digital signal converter (5) and a controller (6).

Abstract: The present invention relates to a method for the detection and/or quantification of Streptococcus pneumoniae, a Gram-positive bacteria that is an important human pathogen, in an isolated biological sample, through magneto-amperometric biosensors, comprising detecting fragments of lytA gene of the microorganism, amplified through PCR, preferably asymmetric PCR or direct asymmetric PCR, by hybridization thereof to a specific probe fully complementary to a region of the amplified fragment. Furthermore, the present invention also relates to the use of primers SEQ ID NO: 3 and 4 together with probes SEQ ID NO: 1 and/or SEQ ID NO: 2 to perform the detection. The biosensor developed to detect S. pneumoniae can be applied to different types of clinical samples from patients infected with this bacterium or other related bacteria. Preferably the clinical sample is an isolated biological fluid such as blood, cerebrospinal fluid, saliva or urine.

Abstract: The present invention relates to a method for the detection and/or quantification of Streptococcus pneumoniae, a Gram-positive bacteria that is an important human pathogen, in an isolated biological sample, through magneto-amperometric biosensors, comprising detecting fragments of lytA gene of said microorganism, amplified through PCR, preferably asymmetric PCR or direct asymmetric PCR, by means of the hybridization thereof to a specific probe fully complementary to a region of said amplified fragment. Furthermore, the present invention also relates to the use of primers SEQ ID NO: 3 and 4 together with probes SEQ ID NO: 1 and/or SEQ ID NO: 2 to perform said detection. The biosensor developed to detect S. pneumoniae can be applied to different types of clinical samples from patients infected with this bacterium or other related bacteria. Preferably the clinical sample is an isolated biological fluid such as blood, cerebrospinal fluid, saliva or urine.