PubMed Health⌕ Search

Biomedical subjects

L Ferrara

Publications and source records attributed to L Ferrara.

At least 109 records · Page 6Linked to original sources
PubMed1986

Nuclear magnetic resonance of protamines. A 1H-NMR study of the interaction of clupeine fractions with mononucleotides.

The interaction of the three clupeine fractions, YI, YII, Z, and salmine fraction AI with mononucleotides has been examined by means of 1H nuclear magnetic resonance. The results obtained are interpreted in terms of electrostatic interactions between positive arginine guanidinyl groups and negative nucleotide phosphates. In addition, clupeine fraction YI and salmine fraction AI exhibit with guanine and adenine nucleotides a more specific interaction that leads to the formation of large aggregates in solution. The experimental data presented in this work demonstrate that the strength of interaction between clupeine YI and salmine AI with mononucleotides follows the order: 5'-dTMP approximately equal to 5'-dCMP much less than 5'-dAMP less than 5'-dGMP approximately equal to 5'-GMP.

Adamantane↗
PubMed1985

Treatment decisions in a skilled-nursing facility: discordance with nurses' preferences.

Hospitalization transfers from a skilled-nursing facility were studied. A hierarchically arranged questionnaire on acute medical deterioration and treatment aggressiveness was used to study the degree of discordance between the transfers actually made and the preferences of nursing home head nurses. According to the nurses, 37 per cent of the patients involved should not have been hospitalized even under the most compelling circumstances; however, 76 per cent of this subgroup had in fact been hospitalized under physician's orders. The nurses would have refrained from instituting any new treatment in 14 per cent of the cases, all of which involved chronic neurological impairments; 36 per cent of this subgroup had nevertheless been hospitalized in the 12 months prior to the study.

Aged↗
PubMed1984

[Determination by capillary gas liquid chromatography of nitrosamine in partially altered food].

The nitrosamines have been extensively studied for their toxicity. Their formation in the foods containing nitrous and nitric derivatives is favoured by the presence of suitable substrata. In the present work have been used column and capillari GL Chromatography for the determination of some nitrosamines in altered foods. The results obtained by applying the suggested procedure to a number of altered samples have been very encouraging.

Chromatography, Gas↗
PubMed1984

Modified calmodulin calcium binding domain III. Solid phase synthesis, purification and 1H n.m.r. characterization.

The dodecapeptide Ac-Asp-Lys-Asp-Gly-Asn-Gly-Tyr-Ile-Ser-Ala-Ala-Gaba-OH is a modified calmodulin calcium binding domain III. The synthesis of the peptide by the solid phase method with a total protection scheme using PAM-resin is reported. The purified compound has been characterized by 1H n.m.r. spectroscopy, both in the presence and in the absence of calcium ions, at various pHs. No strong specific interaction seems to occur between the peptide and Ca++ ions in water solutions.

Binding Sites↗
PubMed1983

Studies on gliadin related peptides. I. Synthesis, purification and 1H n.m.r. characterization of the pentapeptide H-Tyr-(Gln)3-Pro-OH.

The pentapeptide H-Tyr-(Gln)3-Pro-OH has been recently postulated to be the basic repetitive unit of a sequential polypeptide contained in wheat bread alpha-gliadins, which are believed to be toxic factors in coeliac disease, gluten-dependent enteropathy. Solid-phase synthesis, purification and 1H n.m.r. characterization in water solution of this peptide are described.

Chromatography, High Pressure Liquid↗
PubMed1982

[The use of Eichornia crassipes for the improvement of some characteristics of water].

Some plants of Eichornia Crassipes were studied in September-January period for the absorption of some cations from wastewaters. In this note was studied the lead, zinc and copper in relation the depurative potential of this plants to 18 degrees C. These metals have identified in the water and in the ashes by atomic absorption. Nowadays our researches, are intented at to study the depurative potential of Eichornia Crassipes and others aquatic plants in presence of multiple cations.

Absorption↗