Prevalence of red ear syndrome in juvenile primary headaches.

BACKGROUND: Previous studies have suggested a relationship between 'red ear syndrome' (RES) and pediatric migraine. Aims of this study were (i) to assess the frequency, specificity and sensitivity of RES in a population of pediatric migraineurs and (ii) to establish the pathophysiological mechanisms of RES associated with migraine. METHODS AND RESULTS: A total of 226 children suffering from headache (aged 4-17 years) were enrolled. One hundred and seventy-two (76.4%) were affected by migraine, the remaining 54 (23.6%) by other primary headaches. RES was followed significantly more frequently by migraine (23.3%; p < .0001), and was characterized by high specificity and positive predictive value (96.3 and 95.3%, respectively). According to the univariate statistical analysis, RES showed a statistically significant association with male gender, throbbing quality of the pain, vomiting and phonophobia. It was confirmed by a multivariate stepwise logistic regression model only for the throbbing quality of the pain, vomiting and male gender. CONCLUSIONS: Our study showed that (i) in children, RES is a highly specific sign for migraine. In addition, the evidence of an association of RES with some migraine features partially provoked by the parasympathetic system supports the hypothesis of a shared pathophysiological background (e.g. via the activation of the trigeminal-autonomic reflex).

A short-term longitudinal study of the early development of self-regulation.

A short-term longitudinal study was conducted to determine whether self-regulation at 4 years could be predicted from child and maternal measures obtained when the children were age 24 months. The subjects were 69 children and their mothers drawn from the general community. Criterion behaviors assessed at 4 years were those suggestive of attention-deficit hyperactivity disorder. Of the 24-month child measures, maternal ratings of the child's impulsivity and attention span, plus an objective measure of delay ability, were the most effective predictors. Maternal negativity, as assessed in mother-child interaction, predicted the criterion behaviors, even after the child's behavior as an elicitor of maternal behavior was controlled. Maternal child-rearing attitudes on the dimensions of warmth and aggravation were also effective predictors, even after controlling for the child's emotionality as a possible determinant of maternal attitudes. It is argued that the results with the maternal attitude measures provide support for the hypothesis that maternal behavior is a contributor to the development of self-regulation.

Child and maternal correlates of impulse control in 24-month-old children.

In two studies, we assessed the ability of 24-month-old children (N = 82) to delay a response to an attractive stimulus on a series of tasks administered by either the child's mother or a female adult stranger. In both studies, delay performance was consistent across tasks, but findings were inconsistent as to the effect on delay performance of a child's gender or the examiner's relationship to the child. Mothers' ratings of their children's personality predicted delay performance; superior performance was associated with low impulsivity, high attention span/persistence, and low sociability. Superior delay performance was also associated with low maternal directiveness as assessed on compliance tasks, and with mothers' encouragement of independence as assessed on a child-rearing attitude questionnaire.

Alpha-1-antitrypsin MZ phenotype and cryptogenic chronic liver disease in adults.

Intrahepatocytic inclusions of alpha-1-antitrypsin as markers of Z allele were searched by histochemical and immunohistochemical (peroxidase-antiperoxidase) methods in needle biopsy specimens from 80 consecutive cases of cryptogenic cirrhosis and chronic active hepatitis - HBsAg-negative - in adults. All positive cases and 26% of the negative ones were phenotyped in order to determine the frequency of heterozygous (MZ) deficiency. At variance with previous studies, no prevalence of heterozygous (MZ) deficiency could be demonstrated. This result indicates that further investigations are mandatory to establish if heterozygous (MZ) subjects are predisposed to chronic liver disease.

Characterization of alpha-1-antitrypsin by isoelectric focusing on an ultrathin polyacrylamide gel layer. An economic high-resolution system for determining PiM subtypes.

Through the use of ultrathin layer polyacrylamide gel isoelectric focusing it is possible to obtain a resolution of the bands of alpha 1AT so as to be able to easily recognize all six PiM subtypes. The optimal resolution of the PiM subtypes is obtained without deforming the pattern of the Pi phenotypes. In addition to high resolution, ultrathin layer polyacrylamide gel isoelectric focusing permits a notable reduction of fees to 1/5 of the usual.