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Biomedical subjects

V Pellegrino

Publications and source records attributed to V Pellegrino.

9 recordsLinked to original sources

Successful use of ECMO in adults with life-threatening infections.

Two cases of critically ill patients who received extracorporeal membrane oxygenation (ECMO) using different forms of circuitry and for different indications are presented. Both patients had life-threatening infections with septic shock and were not able to be supported by conventional means. The first patient had staphylococcal septicaemia and received venoarterial ECMO for circulatory failure. The second patient had psittacosis and received venovenous ECMO for respiratory failure. We discuss the expanding indications for this technology and the role it has to play in adult intensive care.

Adult↗

Determination of presence of fungicides by their common metabolite, 3,5-DCA, in compost.

This paper describes the determination of 3,5-DCA in commercial composts, a common metabolite in a class of fungicides, and dicarboximides (Vinclozolin, Chlozolinate, Iprodione, Procymidone) which are commonly used in agriculture. The extracts, obtained in acetonitrile by sonication, are analysed by HPLC/DAD without clean-up. This method has shown several advantages: reduced manipulation of samples, good recovery (80-90%) and good reproducibility (RSD% <7). The limit of detection (DL) of the analytical method has been estimated as 15 microg/kg for the common metabolite, and 35-145 microg/kg for the four fungicides in the matrices.

Agrochemicals↗

Use of a rapid and simple method to extract proviral DNA in the identification of HIV-1 by PCR.

DNA extraction is a critical step in PCR analysis and is closely related to its sensitivity. Traditional methods, based on phenol-chloroform extraction, require more time and the use of toxic reagents. GeneReleaser (Bio Ventures Inc.) is a commercial product which releases DNA from whole blood, cell cultures, bacterial colonies and the like. Cells lysis and DNA extraction are accomplished directly in the amplification tube on a thermocycler. We used GeneReleaser in the identification of HIV-1 proviral DNA by PCR on whole blood samples. All samples arrived at our laboratory for HIV-1 detection were treated with two different procedures. The classical one was based on the lysis of separated lymphocytes by proteinase K, while the other consisted in DNA extraction by GeneReleaser from 5 microliters of whole blood in sodium citrate. All samples were amplified for HIV-1 GAG region; to prevent carry-over contamination Uracil N-glycosylase (UNG) sterilization was performed. Amplified sequences were revealed using the DEIA commercial system (Sorin Biomedica, Italy). To verify the suitability both of cell lysates and GeneReleaser DNA-extracted samples for PCR, we amplified a specific sequence of HLA-DQ-alpha gene. Initial data indicate that this new method might reduce the performance time of PCR (DNA extraction time was around 15 minutes) and improve PCR sensitivity.

Adult↗

[Splenic trauma. Conservative treatment].

The spleen performs a wide range of important life functional at an hematological, immunological and hormonal level. The frequency of immediate and late complications following splenectomy suggest that the most conservative treatment possible must be adopted in cases of splenic trauma. The paper reports 180 cases observed during the period from January 1982 to August 1987. Conservative treatment was used to treat 92 patients. The real advantages of this methods are reviewed in relation to the stability of clinical conditions, the absence of associated abdominal lesions, and the availability of diagnostic equipment and intensive therapy units.

Emergencies↗

Leucocyte identification and analysis in human semen.

The analysis of leucocyte population in human semen could be useful in the diagnosis and therapeutic monitoring of male genital infections, but it is difficult due the low percentage of leucocytes, often not easily recognizable from immature cells of spermatogenesis. A method was developed for the isolation and identification of different leucocyte populations in human semen in healthy subjects using anti-CD45-covered magnetic beads. The seminal fluid was incubated with anti-CD45-covered magnetic beads and the samples were placed in contact with a magnet. The CD45-positive cells recovered were analyzed by light microscopy. The leucocyte formula was compared with a leucocyte formula performed on seminal fluid sediment. The method, even if laborious, eliminates all spermatozoa and most of cells of spermatogenetic lineage, thus permitting phenotyping and functional analysis on isolated leucocytes.

Cell Separation↗