First report of frequencies of Y chromosome microdeletions at a reproductive medicine center in Peru.

Objective: Y chromosome Microdeletions are the second genetic cause of infertility in men. Despite its importance for infertility treatment, there is no previous research in Peru. The aim of this study was to determine the frequencies and characteristics of Y chromosome microdeletions in a group of men who sought infertility consultation at a specialized reproductive medicine center in Peru.

In-hospital mortality risk factors for patients with cerebral vascular events in infectious endocarditis. A correlative study of clinical, echocardiographic, microbiologic and neuroimaging findings.

Objective: Cardiac complications in infectious endocarditis (IE) are seen in nearly 50% of cases, and systemic complications may occur. The aim of the present study was to determine the characteristics of inpatients with IE who suffered acute neurologic complications and the factors associated with early mortality.

Methods: From January 2004 to May 2010, we reviewed clinical and imaging charts of all of the patients diagnosed with IE who presented a deficit suggesting a neurologic complication evaluated with Computed Tomography or Magnetic Resonance within the first week.

Comparative allele distribution at 16 STR loci between the Andean and coastal population from Peru.

In the present study, we analysed the allelic distribution of 16 autosomal short tandem repeats (STRs) performed on unrelated individuals from seven different Peruvian cities, three highland Andean cities and four coastal ones. The loci investigated were F13A01, FESFPS, vWA, CSF1PO, TPOX, TH01, D16S539, D7S820, D13S317, D5S818, D19S253, F13B, D21S11, LPL and D8S1179 y D3S1358. The allele frequency, statistical parameters, Hardy-Weinberg equilibrium and population pair comparison across all loci were determinate.

Rotating-disk sorptive extraction of nonylphenol from water samples.

In this study the sorption of nonylphenol was implemented on a rotating Teflon disk coated with a PDMS film on one of its surfaces. In this way, the disk, which has a high surface area, contacts only the liquid sample, which can be stirred at higher velocity than with the stir bar used in stir-bar sorptive extraction (SBSE), without damaging the phase while at the same time facilitating analyte mass transfer to the PDMS surface. We refer to the procedure as rotating-disk sorptive extraction (RDSE).