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Biomedical subjects

J Sanz Ortega

Publications and source records attributed to J Sanz Ortega.

18 recordsLinked to original sources
PubMed2001

[Incidence of IgE-mediated allergy to cow's milk proteins in the first year of life].

OBJECTIVE: To study the incidence of IgE-mediated allergy to cow's milk proteins during the first year of life. METHODS: A multicenter, prospective study of newborns selected from different health centers was performed. The newborn infants were followed-up during the first year of life. Newborns with suspected adverse reaction to cow's milk were sent to the referral hospital for diagnostic study. This study was based on clinical history, skin tests (skin prick test) and on determination of specific IgE in serum (Pharmacia CAP system) against cow's milk and its protein fractions. Diagnosis was confirmed by open challenge. RESULTS: A total of 1,663 newborns were followed-up during the first year of life. Adverse reaction was suspected in 56 infants (3.3%). Allergy to cow's milk proteins was confirmed in 6 infants (0.36 %). Eighty-three percent of (5/6) children with cow's milk allergy had first-degree relatives with atopic disease compared with 19 % of children (329/1657) without cow's milk allergy. Among the entire sample, 26 infants had first-degree relatives with atopic disease and one of these infants (3.8%) developed cow milk allergy. The six children with cow's milk allergy were exclusively breast-fed, and clinical reaction developed within 1 week of the introduction of artificial feeding. CONCLUSION: The incidence of IgE-mediated allergy to cow's milk was 0.36 %. In infants with two first-degree family members with atopic disease, the probability of developing allergy to cow's milk proteins during the first year of life was 3.8%.

Animals↗
PubMed2000

Vascular enumeration as a prognosticator for colorectal carcinoma.

Vascular enumeration is thought to be an independent prognosticator for several human tumours, including breast, bladder and colorectal carcinomas. There have been 12 reports on the prognostic influence of vascular enumeration in colorectal carcinoma with different results. To test the prognostic influence of this factor in our patients, we have selected 126 patients with colorectal carcinoma Dukes' stages A to C treated only with curative surgery with no further adjuvant therapy. The minimal follow-up time was 5 years (60 months). After immunostaining with CD34, we performed a manual count of the vessels following Gasparini's criteria. In our series vascular enumeration showed significant association with the histological grade (P = 0.03) with a cut-off point at 77 vessels/200x, but not with tumour staging and vascular and neural invasion (P > 0.05). Vascular enumeration was a prognosticator for RFS (relapse-free survival) (P = 0.009) and OS (overall survival) (P = 0.01) in all Dukes' stages in the univariate analysis, but this prognostic influence was lost in the multivariate analysis, in which only stage, histological differentiation, location and vascular and neural invasion behaved as significant independent prognosticators.

Adult↗
PubMed1997

Triton tumor of the parotid area. Case report.

A 27-year-old woman with a Malignant Triton Tumor (MTT), or malignant schwannoma with rhabdomyoblastic differentiation, located in the parotid cell and infiltrating the nasal sinuses and the left orbit is described. The initially resected tumor showed three recurrences within a 2 years follow-up period. During successive recurrences an increase in cellular density, number of mitoses and necrosis was noticed. Immunohistochemical analysis showed that the tumor was composed of a mixed population of cells. Some of them showed positivity for actin, desmin and myoglobin, while others were positive for S-100 protein, glial fibrillary acid protein, and IV-collagen. Cytokeratin stainings were negative. Up to now, 8 benign triton tumors and another 45 cases of MTT have been described. None of them was primarily located in the parotid gland, and infiltration to the orbital cavity has not been previously described.

Actins↗
PubMed1993

[Bronchial hyperreactivity in infancy].

Airway responsiveness may be defined as the case with which airways narrow upon exposure to physical and chemical stimuli and drugs. Bronchial hyperresponsiveness reflects an excessive bronchoconstricting response to these stimuli. Although in part it may be genetically mediated, a number of environmental factors (allergens, viruses and contaminants) are also involved in increasing bronchial responsiveness through airway inflammation. We review the concept, etiology, pathogeny, clinical expression, diagnosis, preventative measures and treatment of bronchial hyperresponsiveness in pediatrics.

Age Factors↗
PubMed1990

[Epidemiologic study of risk factors associated with the development of respiratory pathology in children].

A total of 1,566 children the area of Valencia (Spain), of both sexes and aged 7 to 14 received an epidemiological questionnaire recommended by the American Thoracic Society. Antecedents of asthma were recorded in 79 cases (5%), with a predominance among males; 73.3% of these children presented their first crisis before age three. Eighty-seven children were habitual smokers (5.6%), again with a predominance among males-most of these children being between 13 and 14 years old. A family history of smoking was observed in 82.8% of the children who were habitual smokers. A greater predominance of smoking mothers was observed at higher socio-economical levels--with no significant differences between parents. The incidence of respiratory pathology (cough and antecedents of bronchitis) was higher among children whose mothers (or both parents) were smokers. On comparing the two areas of the city with the greatest difference in air pollution level, no significant differences were observed in respiratory morbidity among the child population.

Air Pollution↗
PubMed1990

[Repercussion of risk factors associated with the development of chronic bronchial pathology on pulmonary function in children].

Of a total of 1,566 children, 1,416 of both sexes and aged 7 to 14 were subjected to functional respiratory exploration with a Vitalograph dry spirometer. The impact of tobacco smoke--as active and/or passive smokers--on the spirometric variables (FVC, FEV1, FEF2572, FEF50) evaluated by variance analysis (ANOVA) revealed no significant reductions. Asthma was the single antecedent of respiratory morbidity showing significant reductions in FEF2575, FEF50 among males alone; no significant reductions were observed for any of the other spirometric variables. No significant decreases were found in the spirometric variables on comparing two areas of the same city with the greatest difference in air pollution level.

Adolescent↗
PubMed1990

[Exercise test in exercise-induced asthma in children: study of delayed response].

In this study we perform the exercise broncho-provocation test according to a protocol and involving 27 children with allergic asthma to study the prevalence and distinctive traits of the late response in exercise-induced asthma (EIA). At the conclusion of the study, 20 patients (74%) were diagnosed of EIA through some of the tests employed (ergometric bicycle, free run). In the cases where both tests were negative, we reproduced in a controlled manner the exercise reported as asthmogenic on the basis of anamnesis; no positivity was observed for the test in any case. Prevalence of late asthmatic response was 40% (8/20); mean beginning time to this response was 4-6 hours, lasting less than 1 hour and with a mean intensity rate of 26.8% (measured as the percentage of PEFR drop according to the preexercise basal value). The results are discussed, comparing them with those of other authors and with the allergen provocation response pattern; in addition the methods used and therapeutic implications in view of the results are dealt with.

Asthma, Exercise-Induced↗
PubMed1990

[Standardization of forced spirometry. Analysis of the basal pulmonary function (PEF, FEF2575, FEF50) in a selected group of children].

This is a study of the ventilatory function (FEF2575, FEF50, PEF) by dry spirometer Vitalograph in 1,566 children of both sexes with ages ranging from 7 to 14 years; 1,156 children (73.6%) were selected as reference population. Height was the biometric parameter with the greatest correlation to the functional variables studied in both sexes, except to PEF in females. Significant differences were observed in functional variables between male and female subjects. Multiple and simple linear regression equations and percentiles tables for each sex are presented.

Adolescent↗
PubMed1990

[Basal pulmonary function studies (FVC, FEV) in a selected child population].

This is a study of the ventilatory function (FVC, FEV1) by dry spirometer Vitalograph in 1566 children of both sexes with ages ranging from 7 to 14; 1156 children (73.6 per 100) were selected as reference population. Height was the biometric parameter with the greatest correlation to the functional variables studied in both sexes. Significant differences were observed in functional variables between male and female subjects. Multiple and simple linear prediction equations and percentiles tables for each sex are presented. The results of the present study are compared with those of previously published of children.

Child↗
PubMed1990

[Prevalence of sensitivity to contact allergens among atopic and non atopic children without dermatitis].

Epicutaneus tests were used to study 168 children without dermatitis (aged 6 months to 14 years) divided into two groups: 88 atopic cases (53 males and 35 females) and 76 non atopic children (44 males and 31 females). Epicutaneous testing proved positive in 22.7 of atopic children, and in 17.3 por 100 of non atopic cases; there were no statistically significant differences between the two groups, and vesicular reactions predomined in both. Nickel was the contact allergen of greatest predominance among the atopic and non atopic children (17 and 9.3% respectively), followed by mercury derivatives (5.5%), neomycin (2.4%) and dichromates (1.8%).

Adolescent↗
PubMed1989

[Contact allergic dermatitis in childhood: 1972-1987].

We have carried out retrospective study of 190 children with dermatitis, aged from 2 to 14 years old. 67 (35%) of these children showed positive patch-test reactions. Nickel sulphate (35%) was the first allergen. Form 1979, once mercury was introduced in the GEIDC standard series, it becomes the more common iatrogenic allergen in childhood in our country. Other allergens also responsible for the dermatitis were mercaptobenzothiazole (12%), cobalt (9%) and p-phenylenediamine (7%).

Adolescent↗
PubMed1986

[Abnormal movements in children. 2 cases of known etiology but infrequent: Sandifer syndrome and a syndrome caused by neuroleptics].

Authors present two cases of children with abnormal movements. One of them described slow and dystonic movements of neck and head due to an important gastroesophageal reflux. These movements were useful to decrease annoyances that reflux causes in the child. Appearance of these movements and reflux is what is named "Sandifer syndrome". The other case presented stereotyped movements of head, like a negation, continuous and produced by a long intake of neuroleptics, which had caused a blockade of central dopaminergic receivers. Suppression neuroleptics of cured the child.

Gastroesophageal Reflux↗