Maira J Orozco

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A 55-year-old woman with a unique form of chronic hypertrophic pachymeningitis involving the posterior fossa and upper cervical spine is reported. Unlike other cases previously described, the clinical picture was dominated by signs of increased intracranial pressure, lower cranial nerve disorders, and a progressive cervical radiculomyelopathy. The diagnosis(More)
A new model for cerebrospinal fluid (CSF) circulation is proposed. Specific activity/time curves for CSF kinetics determined after intraventricular injection of a radiotracer were produced by fitting a biexponential function to data points and developing a two-compartmental model. Calculation of kinetic parameters of the model provides quantitative data(More)
Spontaneous extradural haemorrhage may be due to neighbourhood infections, vascular malformations of the dura mater, and disorders of blood coagulation. Two cases are described here: in one, infection was present; in the other, there was a berry aneurysm of the middle meningeal artery with a small parietal dural angioma. Operation was successful in both(More)
A case of an aneurysm of the middle cerebral artery in a 17-month-old child has been presented and the literature on the problem reviewed. A total of 27 aneurysms in young children (under two years of age) has been found. The characteristics that define this group of patients are: a greater proportion of aneurysms of the middle cerebral artery and its(More)
BACKGROUND Extradural hematoma has been classically considered to be an acute complication of head injury whose maximum development takes place in the minutes following trauma. Delayed extradural hematoma (DEH) is defined on the basis of an exclusively radiologic criterion: epidural hematoma that is not present in the first neuroradiologic examination made(More)
Oral administration of rapanone to a group of female mice at doses of 60 and 120 mg/kg, reduced the percentage of pregnancies compared to control group, suggesting an anovulatory effect. Postcoital administration induced uterine alteration in both the first and second gestation periods. These results seem to indicate inhibition of trophoblast implantation(More)
A new case of MURCS association (mullerian duct aplasia, renal aplasia and cervicothoracic somite dysplasia) in an 18 year old patient is reported. In addition to other minor phenotypical features, hypothalamic chronic anovulation was documented. Basal concentrations of PRL, TSH, GH, F and E were within reference values for adult women. Challenges with TRH(More)
There is increasing evidence that exercise overload induces changes in skeletal muscle structure and function. Recent studies suggest that muscle mitochondria could be involved either as the result or the origin of these changes. This study describes a case of a patient with marked air flow obstruction related to chronic obstructive pulmonary disease, in(More)
The present study evaluated the effect of progesterone supplementation during a double PGF2α injection synchronization protocol on pregnancy per artificial insemination (P/AI) and on the incidence of twin births. Seven hundred and eighty three dairy cows were synchronized with two injections of PGF2α 14 days apart, starting on day 35 postpartum for their(More)