Biomedical subjects

P Yuste

Publications and source records attributed to P Yuste.

At least 19 recordsLinked to original sources

PubMed1992

The effect of proanthocyanidin-rich hulls and proanthocyanidin extracts from bean (Vicia faba L.) hulls on nutrient digestibility and digestive enzyme activities in young chicks.

Proanthocyanidins were prepared from three bean (Vicia faba L.) varieties by extracting hulls in aqueous acetone. The amounts of freeze-dried extracts recovered were 74, 89 and 97 g/kg hull for the varieties Brunette, Statissa and Minica respectively. Chicks (3 weeks old) were fed on a maize-soya-bean control diet or the same control diet substituted with either 30 g proanthocyanidin extracts/kg or 300 g proanthocyanidin-rich hulls/kg. Chicks were tube-fed diets twice daily for 4 d. Nutrient digestibilities were calculated from amounts present in diets and freeze-dried excreta with the aid of titanium dioxide as a marker. Enzyme activities were measured in digesta removed from the jejunum. Extracts of proanthocyanidins depressed the digestibility of protein by 34%, starch by 3% and had no effect on the digestibility of lipid. Proanthocyanidin-rich hulls depressed the digestibility of protein by 62%, starch by 6% and lipid by 4%. Digestive enzyme activities were depressed to the same extent by extracts and hulls, trypsin (EC 3.4.21.4) by 55 and 62%, alpha-amylase (EC 3.2.1.1) by 75 and 78% and lipase (EC 3.1.1.3) by 31 and 32% for proanthocyanidin-extract and proanthocyanidin-rich-hull diets respectively. The susceptibility of substrates as well as enzymes to the effects of proanthocyanidins is discussed.

Animals↗

PubMed1989

Conservative and bronchoplastic resection for bronchial carcinoid tumours.

From January 1974 to December 1987, 45 cases of bronchial carcinoid were surgically managed at our Unit, 44 of which were evaluated. All patients but 2 were submitted to fiberoptic bronchoscopy prior to surgery. A standard resection was performed in 19 cases (13 lobectomies, 4 bilobectomies and 2 pneumonectomies). In 11 cases, pulmonary resection was complemented with a bronchoplastic technique (6 lobectomies, 2 bilobectomies, 2 pneumonectomies, 1 segmentectomy). Four cases were managed by minimal resections (2 segmental, 1 wedge, 1 enucleation) and 8 others by bronchotomy and local resection without the sacrifice of lung tissue. There were two major postoperative complications and no operative mortality. Mean follow-up has been 53 months and no local bronchial recurrence has been observed although 2 patients have developed distant metastases, with 1 death. The absence of local recurrence in a series in which more than 50% of patients were treated with some form of conservative surgery seems to indicate that resection of lung tissue should be avoided whenever possible.

Adult↗

PubMed1989

Influence of peas (Pisum sativum) as a dietary ingredient and flavomycin supplementation on the performance and intestinal microflora of broiler chicks.

1. Two experiments were carried out to study the effects of diets containing various concentrations of pea meal (Pisum sativum L.), with or without flavomycin supplementation, on the performance and intestinal microflora of broiler chicks. 2. During the 7 to 28-d period, chicks fed on diets containing 300, 600 and 800 g pea meal/kg consumed more food and gained more weight than chicks receiving a maize-isolated soyabean protein control diet. The addition of flavomycin to the diets had similar effects on the performance of both the control and the pea groups. 3. Pea diets, with and without supplemental flavomycin, had little influence on the composition of intestinal microflora. The counts of enterococci in the small intestine and Clostridium perfringens and coliforms in the caeca of pea-fed chicks exceeded those of control chicks.

Aminoglycosides↗

PubMed1987

Regression of left ventricular hypertrophy after renal transplantation. A prospective study.

Explore the source record for details and available documents.

Adolescent↗

PubMed1987

[Echocardiographic aspects of false intraventricular tendons].

A series of 4260 consecutive echocardiographic examinations, performed in 5 Cardiological Centers was examined, identifying 125 intraventricular false tendons (FTs) in 100 cases (55 normals and 45 with heart disease) of whom 31 were female and 69 male, aged 3 to 82 years. An anatomo-morphological study was possible in 9 cases, dead for stroke or heart failure, on autopsy, and in 7, on heart surgery. A phonocardiogram was performed in all normals and in 20 patients. On echocardiography, FTs appeared as an echo-producing string-like structure, straight between the septum and the ventricular free wall, mobile during the cardiac cycle, without systolic thickening and any relation with the atrioventricular valvular apparatus. The prevalence of FTs was 2.3%; it was 3.2% to 5.3% in younger people. FTs were located in the right ventricle (4 cases), left ventricle (95 cases) or in both (1 case). Their site was left apical (45 FTs), right apical (2 FTs), right (3 FTs) and left (20 FTs), upper septum-to-free wall (55 cases). In 1 case hypertrophy of trabeculae of the left ventricle was detected. FTs were single (79 cases), double (19 cases), multiple (2 cases), short (42 cases), long (58 cases), thick (45 cases) and thin (55 cases). They showed a membrane-like motion (thick FTs-45 cases) and a valve-like motion (thin FTs-55 cases). Innocent murmur was detected in 50 of 55 normals and related to thin FTs. Of 16 cases examined anatomically and histologically, FTs were fibrous in their distal portion and fibro-muscular in the proximal one in 12 cases, whereas they were entirely fibrous-muscular in 4 cases. The site and location of FTs detected by echo were confirmed by anatomy in all cases. In 4 cases other 9 FTs, not detected on echocardiography, were found. These data suggest that echocardiography is a useful tool to detect intraventricular FTs and differentiate them from other echo-producing structures. Although a relationship between FTs and heart disease has not been found, their presence could be responsible of innocent murmur in many normal subjects.

Adolescent↗

PubMed1978