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A Cotroneo

Publications and source records attributed to A Cotroneo.

10 recordsLinked to original sources
PubMed2005

Comprehensive two-dimensional liquid chromatography combined with mass spectrometric detection in the analyses of triacylglycerols in natural lipidic matrixes.

Triacylglycerols (TAGs), the major components in fats and oils, are a good example of natural complex mixtures. The best technique for the separation of such samples is certainly high performance liquid chromatography (HPLC). Monodimensional HPLC separations are often not sufficient to resolve all the components of interest. The present investigation reports the employment of a comprehensive LC system, based on the different separation mechanisms of silver ion (Ag) and non-aqueous reversed phase (RP) HPLC, used respectively in the first and second dimension, and applied to the analysis of plant-derived natural lipidic matrixes. The results obtained show that the approach enables both the separation of a high number of components and the attainment of structural information due to the formation of group-type patterns on the bidimensional (2D) plane. The employment of atmospheric pressure chemical ionisation (APCI) mass spectrometry as detection system was of substantial support for reliable TAG assignment, thus increasing the identification power of this comprehensive chromatographic approach.

Automation↗
PubMed2004

Use of zolpidem in over 75-year-old patients with sleep disorders and comorbidities.

The aim of the present study was to evaluate the efficacy and safety of zolpidem in elderly subjects with disorders of sleep and comorbidities. The patients of this study had to present the following requirements: age over 70 years, reported disorders of sleep such as insomnia, and they had to be affected with diabetes and arterial hypertension. Patients presenting diseases that could interfere with sleep, i.e., anxiety, depression, panic attacks,alcohol abuse, some drugs were excluded from the study. All the jobs potentially causing insomnia carried out in the past from the patients were considered, too. A questionnaire of sleep was administered to all the patients (World Psychiatric Association: WPA, 1971).Insomnia, whenever present, was classified according to the criteria of the American Sleep Disorders (ASD) Society and the American Professional Sleep Society (APSS). The following scales were also administered: instrumental activities of daily living scale (IADL),activities of daily living (ADL), geriatric depression scale (GDS), cumulative illness rating scale (CIRS), short portable mental status questionnaire (SPMSQ), mini nutritional assessment (MNA), disease medical index (DMI), sleep questionnaire, social and environmental status. Two groups of patients were evaluated. Group A: 50 patients, 35 women and 15 men, mean age 78.9 years, with a history of insomnia, and Group B 30 patients, 20 women and 10 men, mean age 78.4 years, with onset of insomnia in the last three weeks. The two groups were further divided into three subgroups, diabetic, hypertensive and healthy patients. Zolpidem showed to be effective and well tolerated in both groups of patients.

Aged↗
PubMed2004

Comparison of the efficacy of new and conventional antipsychotic drugs in the treatment of behavioral and psychological symptoms of dementia (BPSD).

This double-blind study evaluated the efficacy and safety of risperidone or olanzapine vs. promazine in the treatment of behavioral and psychological symptoms in dementia(BPSD). Patients were required to be 65 years or older, to have DSM-IV diagnoses of Alzheimer's disease (AD), vascular dementia (VD) or a combination of both. A brain computerized tomography (CT) was performed for all the patients; 60 demented patients,27 men (45 %) and 33 women (55 %) were selected for this study. The University of California Los Angeles neuropsychiatric inventory (NPI) was administered at baseline, then after 4 and 8 weeks. Patients had at least a score of 24 or more. The Hoehn and Yahr scale was used for evaluating parkinsonism. The scales were administered by an examinator who was not aware of the kind of treatment of the patients. After a wash-out period of 10 days,20 patients, 9 men and 11 women, mean age 76.6 +/- 6.0 years, were randomly assigned torisperidone 1 mg daily in divided doses (morning and bedtime) (Group A); 20 patients, 9 men and 11 women, mean age 82.5 +/- 9.3 years were randomly assigned to olanzapine 5mg at bedtime (Group B), and 20 patients, 9 men and 11 women, mean age 77.6 +/- 4.6 years, were randomly assigned to promazine 50 mg daily (morning and bedtime) (Group C). In case of lack of clinical response, after 4 weeks, the dose could be increased to 2 mg/day of risperidone, 10 mg/day of olanzapine, and to 100 mg/day of promazine in the respective groups. Repeated measures ANOVA was used for the statistical analysis of rating scales over time (baseline, 4 and 8 weeks). At the end of the 8th week, a global improvement was obtained in 80% of patients treated with risperidone and olanzapine, vs. 65 % of patients treated with promazine (p < 0.01). The results show that risperidone in doses of 1-2 mg/day and olanzapine in doses of 5-10 mg/day are effective and safe in the treatment of BPSD. Risperidone presents a major and dose-dependent antidopaminergic action and seems to be preferable when hallucinations and delusions are prevailing symptoms, even if it gives good results on aggression and wandering. Olanzapine seems to be faster in its sedative effect, probably for H1 receptor blockade. Moreover, 5-HT6 antagonism may favor acetylcholine release and this explains why these patients have not presented a cognitive worsening. However, both drugs are comparable or even superior to promazine, with significantly fewer side effects of both anticholinergic and extrapyramidal character.

Aged↗
PubMed2000

Determination of anthocyanins in blood orange juices by HPLC analysis.

Determination of anthocyanins in fresh and concentrated juices can be a parameter for the assessment of authenticity and quality of blood orange juices. This work reports an HPLC/UV-Vis method developed for quantitative determination of anthocyanins in blood orange juices, by using a calibration curve obtained for standard cyanidin-3-glucoside. Samples analysed have been obtained from fruits of different trees (one for each of the varieties: 'Moro', 'Tarocco', 'Sanguinello' and 'Sanguinello nocellare') harvested about every 15 days during the 1998 productive season. Seasonal variation has been also evaluated. HPLC results were compared with spectrophotometric measurements, using a calibration curve obtained for cyanidin-3-glucoside solutions. The two methods showed good agreement, but the results obtained greatly differed with the data reported in the literature.

Anthocyanins↗
PubMed2000

Uruguayan essential oil. 12. Composition of Nova and Satsuma mandarin oils.

The composition of the laboratory-prepared essential oils from Uruguayan Nova and Satsuma mandarins has been studied. The volatile fraction was analyzed by HRGC and HRGC/MS (quadrupole); 79 and 73 components were identified in Nova and Satsuma mandarin oils, respectively. The linear retention indices were calculated for almost all identified components on two different stationary phases. The enantiomeric distribution of beta-pinene, sabinene, limonene, linalool, and alpha-terpineol was studied by multidimensional gaschromatography (MDGC). Polymethoxylated flavones, present in the nonvolatile residue, were analyzed by normal-phase HPLC.

Chromatography, Gas↗
PubMedDate not supplied

Polymeric glues in intestinal surgery.

Authors reports the results of an experimental study on the usefulness of n-butyl-2-cyanoacrylate in abdominal surgery. The research, performed on Wistar rats and Landrace pigs, is constituted by an early phase, to verify the tissue reaction to the n-butyl-2-cyano-acrylate and its adhesive properties, and a main phase, in which it was evaluated the efficacy of n-butyl-2-cyano-acrylate as the only support or as an adjunct to the usual methods in intestinal synthesis. histological and angiographic examination of the surgical specimens demonstrated the tissue autotoxicity and the good adhesive effect of the tissue glue. Because of these characteristic, authors propose its employment to reinforce intestinal sutures performed with the usual methods in high risk condition.

Animals↗