Estradiol prevents ozone-induced increases in brain lipid peroxidation and impaired social recognition memory in female rats.

There is increasing concern about the neurodegenerative and behavioral consequences of ozone pollution in industrialized urban centers throughout the world and that women may be more susceptible to brain neurodegenerative disorders. In the present study we have investigated the effects of chronic (30 or 60 days) exposure to ozone on olfactory perception and memory and on levels of lipid peroxidation, alpha and beta estrogen receptors and dopamine beta-hydroxylase in the olfactory bulb in ovariectomized female rats. The ability of 17beta-estradiol to prevent these effects was then assessed. Results showed that ozone exposure for 30 or 60 days impaired formation/retention of a selective olfactory recognition memory 120 min after exposure to a juvenile stimulus animal with the effect at 60 days being significantly greater than at 30 days. They also showed impaired speed in locating a buried chocolate reward after 60 days of ozone exposure indicating some loss of olfactory perception. These functional impairments could all be prevented by coincident estradiol treatment. In the olfactory bulb, levels of lipid peroxidation were increased at both 30- and 60-day time-points and numbers of cells with immunohistochemical staining for alpha and beta estrogen receptors, and dopamine beta-hydroxylase were reduced as were alpha and beta estrogen receptor protein levels. These effects were prevented by estradiol treatment. Oxidative stress damage caused by chronic exposure to ozone does therefore impair olfactory perception and social recognition memory and may do so by reducing noradrenergic and estrogen receptor activity in the olfactory bulb. That these effects can be prevented by estradiol treatment suggests increased susceptibility to neurodegenerative disorders in aging women may be contributed to by reduced estrogen levels post-menopause.

[Bilateral ovary massive edema. Unusual gynecologic pathology. Report of 2 cases]. / Edema masivo de ovario bilateral. Patología ginecológica poco frecuente. Informe de dos casos.

We report two cases of bilateral massive ovarian edema occurred in a concentration hospital in the last five years. This condition was first described by Kalstone et al. in 1969. It may be uni or bilateral, the last one is very uncommon, until the moment of this work there have been reported only ten cases in the world literature. The main symptoms are: abdominal pain or distention, menstrual irregularity and infertility. Two features are characteristic of this pathology: 1) Fast growing in size and volume of the ovary, and 2) Abscense of neoplastic changes with extensive edema of the stroma particularly in the medulla. The current treatment is oophorectomy. In bilateral cases may be intended a conservative management with wedge resection and fixation of the ovaries to the uterus in order to prevent further torsion. We conclude that massive ovarian edema is an uncommon pathology more frequent as a cause of abdominal pain and fast growing anexial mass in young women.

[Para-tubal cysts: frequency and clinical, ultrasonographic and histological correlations]. / Quistes paratubarios: Frecuencia y correlación clínica, ultrasonográfica e histológica.

We Reviewed 5,100 biopsies, between November 1994 to November 1995 We found 100 paratubval cysts. The 80% of the cases were surgical findings. The 40% of the cases had pain. The 3% of the patients had acute pain, that made necessary an urgent surgery. The ultrasonogram revealed an ovarian cyst in 38% of the cases and it couldn't detect them in 63% of the cases. The cysts sizes were: 6 cm. (84%) *12% 9 between 6-12 cm. and 43% between 12-18 cm. The histopathology report was: 57% of serous cyst and 43% simple cyst.