@article {1877, title = {A real-time polymerase chain reaction-based protocol for low/medium-throughput Y-chromosome microdeletions analysis.}, journal = {Genet Test Mol Biomarkers}, volume = {16}, year = {2012}, month = {2012 Dec}, pages = {1349-55}, abstract = {

PURPOSE: We describe a real-time polymerase chain reaction (PCR) protocol based on the fluorescent molecule SYBR Green chemistry, for a low- to medium-throughput analysis of Y-chromosome microdeletions, optimized according to the European guidelines and aimed at making the protocol faster, avoiding post-PCR processing, and simplifying the results interpretation.

METHODS: We screened 156 men from the Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Institute for Maternal and Child Health IRCCS Burlo Garofolo (Trieste, Italy), 150 not presenting Y-chromosome microdeletion, and 6 with microdeletions in different azoospermic factor (AZF) regions. For each sample, the Zinc finger Y-chromosomal protein (ZFY), sex-determining region Y (SRY), sY84, sY86, sY127, sY134, sY254, and sY255 loci were analyzed by performing one reaction for each locus.

RESULTS: AZF microdeletions were successfully detected in six individuals, confirming the results obtained with commercial kits.

CONCLUSION: Our real-time PCR protocol proved to be a rapid, safe, and relatively cheap method that was suitable for a low- to medium-throughput diagnosis of Y-chromosome microdeletion, which allows an analysis of approximately 10 samples (with the addition of positive and negative controls) in a 96-well plate format, or approximately 46 samples in a 384-well plate for all markers simultaneously, in less than 2 h without the need of post-PCR manipulation.

}, keywords = {Azoospermia, Chromosome Deletion, Chromosomes, Human, Y, Female, Humans, Kruppel-Like Transcription Factors, Male, Real-Time Polymerase Chain Reaction, Sex Chromosome Aberrations, Sex Chromosome Disorders of Sex Development}, issn = {1945-0257}, doi = {10.1089/gtmb.2012.0220}, author = {Segat, Ludovica and Padovan, Lara and Doc, Darja and Petix, Vincenzo and Morgutti, Marcello and Crovella, Sergio and Ricci, Giuseppe} } @article {1748, title = {Role of DC-SIGN and L-SIGN receptors in HIV-1 vertical transmission.}, journal = {Hum Immunol}, volume = {72}, year = {2011}, month = {2011 Apr}, pages = {305-11}, abstract = {

The innate immune system acts in the first line of host defense against pathogens. One of the mechanisms used involves the early recognition and uptake of microbes by host professional phagocytes, through pattern recognition receptors (PRRs). These PRRs bind to conserved microbial ligands expressed by pathogens and initiate both innate and adaptative immune responses. Some PRRs located on the surface of dendritic cells (DCs) and other cells seem to play an important role in human immunodeficiency virus type 1 (HIV-1) transmission. Dendritic cell-specific intercellular adhesion molecule-3 grabbing non-integrin, CD209 (DC-SIGN) and its homolog, DC-SIGN-related (DC-SIGNR or L-SIGN) receptors are PPRs able to bind the HIV-1 gp120 envelope protein and, because alterations in their expression patterns also occur, they might play a role in both horizontal and vertical transmission as well as in disseminating the virus within the host. This review aims to explore the involvement of the DC-SIGN and L-SIGN receptors in HIV-1 transmission from mother to child.

}, keywords = {Cell Adhesion Molecules, HIV Infections, HIV-1, Humans, Immunity, Innate, Infectious Disease Transmission, Vertical, Lectins, C-Type, Polymorphism, Genetic, Receptors, Cell Surface}, issn = {1879-1166}, doi = {10.1016/j.humimm.2011.01.012}, author = {da Silva, Ronaldo Celerino and Segat, Ludovica and Crovella, Sergio} }