Evaluation of dental state in 6-year-old children from the Skierniewice region.

Introduction: Caries is a social disease and a serious problem, especially in the childhood. The effects of untreated caries can cause not only disorders of the stomatognathic system, but also have a negative impact on the overall health and development of the child

The Aim Of The Study: The aim of this study was to evaluate the state of dentition of 6-year-old children from the Skierniewice region

Materials And Methods: A total of 140 children (6-year-old) were included to the study - 74 from a small town (Skierniewice) and 66 from a village. Caries prevalence, caries intensity (dmf, DMF) and dental treatment index (DTI) were assessed.

Aromatase expression in testes of XY, YY, and XX rainbow trout (Oncorhynchus mykiss).

The main goal of the present study was to show whether testicular cells of rainbow trout (Oncorhynchus mykiss Walbaum) either hormonally manipulated (XX males) or produced by using gamma irradiation and pressure shock (YY males, "supermales") are able to aromatize androgens into estrogens compared with the control (XY males). The expression of aromatase gene at the level of the protein and its presence in testicular tissue was investigated by means of immunohistochemistry and Western blot analysis, respectively. The positive staining for aromatase was detected in testicular cells of all trout and in efferent duct cells of XY and YY males.