case report of newborn with thrombocytosis born to an opioid-addict mother

Neonatal thrombocytosis is a very rare phenomenon in infants born to addict mothers. It can be due to opioids withdrawal and occurs a few days after delivery. The etiology is unknown and it is eradicated gradually without any complication. The reported neonate was born to a heroin addict mother who has used methadone during pregnancy. The neonate was admitted in 14th day of life in neonatal intensive care unit [NICU] with the diagnosis of withdrawal syndrome and supportive care was administered for him. Thrombocytosis was detected in routine lab tests. There was not any reason for it except his mother's addiction. The platelet count was 1,168,000 in the first day and decreased gradually during 28 days to 739,000. There was not any complication and no special treatment was administered. This case indicates that thrombocytosis may happen as a part of neonatal abstinence syndrome and is eradicated without any complication

[Role of melatonin receptors in spatial learning of rats exposed to continuous light]

During critical period of mammal's CNS development, interaction of genetic and experience driven processes affects almost their all behaviors in adolescence. The aim of this study was to assess interaction of melatonin and its antagonist, Luzindole on the spatial learning and memory of the rats [Morris Water Maze [MWM]] exposed to continuous light. This experimental study included sixty 45-day-old male rats which were randomly allocated in two groups; control group went through cycles of 12 hours in light/12 hours in dark from birth to the end of the study and the light exposed group was reared in light. Each group also, had 3 subgroups: control, receiving melatonin and receiving luzindole [n=10 for every group]. Using MWM, the animals learning and memory was tested for 5 days. Our results indicated that in the learning phase, the light exposed animals spent more time to find the hidden platform than the control group. Luzindole improved the learning ability in light exposed animals. Melatonin also, slackens the spatial learning of the control animals. luzindole improved spatial learning of the light exposed rats. Light exposure and melatonin had no effect on the memory of these animals. Luzindole only caused a disturbance in spatial memory of the rats in the control group. Light exposure and melatonin impair rat's spatial learning. Non of these two interventions influenced spatial learning of the rats