Flexible graphene photodetectors for wearable fitness monitoring.

Wearable health and wellness trackers based on optical detection are promising candidates for public health uses due to their noninvasive tracking of vital health signs. However, so far, the use of rigid technologies hindered the ultimate performance and form factor of the wearable. Here, we demonstrate a new class of flexible and transparent wearables based on graphene sensitized with semiconducting quantum dots (GQD).

Label-free electrochemical DNA sensor using "click"-functionalized PEDOT electrodes.

Here we describe a label-free electrochemical DNA sensor based on poly(3,4-ethylenedioxythiophene)-modified (PEDOT-modified) electrodes. An acetylene-terminated DNA probe, complementary to a specific "Hepatitis C" virus sequence, was immobilized onto azido-derivatized conducting PEDOT electrodes using "click" chemistry. DNA hybridization was then detected by differential pulse voltammetry, evaluating the changes in the electrochemical properties of the polymer produced by the recognition event.

Nanoprobes for enhanced electrochemical DNA sensors.

Biosensors, small devices enabling selective bioanalysis because of properly assembled biological recognition molecules, represent the fortuitous results of years of interdisciplinary and complementary investigations in different fields of science. The ultimate role of a biosensor is to provide coupling between the recognition element and the analyte of interest, bringing a quantitative value of its concentrations into a complex sample matrix. They offer many advantages.

[Penoscrotal aggressive angiomyxoma].

Aggressive angiomyxoma denotes an extremely infrequent mesenchymal tumour. In virtually every case it involves genital, pelvic or perineal female structures. Cases involving male patients are extremely rare.

[Primary mucinous adenocarcinoma of the renal pelvis--adicional case report].

Mucinous adenocarcinoma of the renal pelvis may be classified as among the rarest neoplasms of the genitourinary tract. Until the present moment just a few dozen cases have been reported previously. Despite the known association with chronic inflammatory conditions of the upper urinary tract, the exact pathogenesis remains unknown.