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The retrogenesis model states that the progression of brain aging and Alzheimer's disease (AD) deterioration proceeds inversely to human ontogenic acquisition patterns. Our aim was to assess if the progressive decline of cognitive abilities and functional capacity in AD follows an inverse sequence of acquisition compared to normal developmental patterns. One hundred eighty one children ranging in age from 4 to 12 years and 148 adults (cognitively normal, subjects with mild cognitive impairment, and mild-moderately severe AD) were assessed with the same cognitive and functional tools. The statistical analyses showed a progressive and inverse distribution on cognitive, functional, and mental age scores when comparing results of children classified by chronological age and patients by dementia staging. The pattern of cognitive acquisition in children showed a progressive development of overall cognitive function along all age ranges, in addition to a simultaneous acquisition of instrumental and basic daily living activities in the functional domain. AD patients showed a progressive decline in cognitive and functional domains, which concurs with the sequence of impairment reported in this dementia. Our findings provide support to the inverse and progressive pattern of functional and cognitive decline observed in AD patients compared to the developmental acquisition of these capacities in children, as stated by the retrogenesis model. Nonetheless, certain differences should be considered when comparing the sequence of acquisition during ontogenic development with that of progressive loss during the course of AD. Retrogenesis may account for the progressive loss of neocortical-related functions in AD.

Anorectal malformations (ARMS) are one of those challenging topics of pediatric surgery. The developments in assessing and approaching patients with these anomalies have been made in the last decades and the methods described in older textbooks functioned as a guide in planning these attempts (Kiely and Peña in Pediatric surgery, Mosby, Missouri, pp 1425-1449, 1998; Grosfeld in Anorectal malformations in children, Springer-Verlag, Berlin, pp 3-15, 2006). The aim of this study is to present the attitude of a surgeon of eighteenth century to the treatment of anorectal malformations, and the evolution in the history of the anomaly. The part about imperforate anus in a textbook of surgery, found in a second-hand bookstore, was translated. The description and the classification of the anomaly, the methods of approaching these cases together with some case reports were presented and compared with today's practice. The historical background of the anomaly was evaluated not only with regard to the book of Heister specifically but also to the other data obtained in the literature. The anomaly was reported to be "not rarely" observed. The obstetricians were warned to examine a newborn baby completely for early diagnosis. The classification of the anomaly was made according to the properties of the membrane covering the anus but prompt treatment, initiating with its simple excision, was suggested in all types. Better results in cases whose anus was covered with a thin, delicate membrane were reported. The results show that routine neonatal examination for all babies was recommended in this Textbook of Surgery which had been published 260 years ago. The physical deterioration due to delay was well described. A broad classification of imperforate anus was made and successful outcome in low-type anomalies of today was reported with some case samples. It is clear that all the efforts starting from Soranus until today improved the understanding of the anomaly. Combining previous information with today's practice in the meetings focused totally on anorectal malformations, where the leading surgeons shared their experiences and re-evaluated the problems encountered, enlightened the future status of this interesting topic of pediatric surgery.