Mercury in oceanic upper trophic level sharks and bony fishes - A systematic review.

Anthropogenic activities contribute to nearly half of current Hg emissions to the atmosphere. In the marine habitat, oceanic predator fishes bioaccumulate Hg throughout their lives, making their consumption the main route of Hg exposure in humans. In this context, several publications, between 1973 and 2022, were selected, analyzed, and duly compiled, with the objective to investigate Hg contamination in nine species of bony fish: Thunnus thynnus (8 publications), Thunnus albacares (19), Thunnus obesus (7), Thunnus atlanticus (5), Thunnus alalunga (4), Katsuwonus pelamis (8), Xiphias gladius (18), Coryphaena hippurus (7) and Euthynnus alletteratus (4), as well as two species of cartilaginous fishes Prionace glauca (13 publications) and Isurus oxyrinchus (8).

Mercury Concentrations in Tuna (Thunnus albacares and Thunnus obesus) from the Brazilian Equatorial Atlantic Ocean.

Average total Hg concentrations measured in muscle of two species of tuna (Thunnus obesus and T. albacares) captured in the Brazilian Equatorial Atlantic Ocean varied from 95 to 1748 ng.g wet weight in T.

Coinfection by HTLV-I/II is associated with an increased risk of strongyloidiasis and delay in starting antiretroviral therapy for AIDS patients.

Objective: To compare the clinical characteristics and outcomes of HIV-1-HTLV-1 coinfected patients, in Bahia, Brazil.

Methods: Retrospective, comparative study.

Results: Among a total of 123 consecutive HIV infected patients, 20 men (20.

[Trans-sphenoidal meningoencephaloventriculocele in an asymptomatic adult: case report].

We report a casual finding of a sphenoethmoidal meningoencephaloventriculocele in an adult patient that the tomography finding was misinterpreted as an expansive neoplastic lesion with malignant features. We alert for the rare site of localization of this malformative pathology.

[Neurosarcoidosis: case report].

We report a case of sarcoidosis in a 21 years old male with history of headache since he was three years old, with absence of abnormalities in a brain computerized tomography (CT). Brain magnetic resonance (MRI) disclosed a meningeal involvement with intense and homogeneous enhancement of the right fronto-temporal convexity and anterior third of the interhemispheric fissure. The brain MRI is more sensitive than brain CT and is the most appropriate method for the evaluation of meningeal and parenchymatous lesions, as well as monitoring the response to therapy and patients follow up.

[EPI-FLAIR sequence in the evaluation of mesial temporal sclerosis].

The purpose of this study is to evaluate morphological and signal intensity changes in the hippocampus in patients with medically intractable temporal lobe epilepsy. We studied 8 patients with mesial temporal sclerosis using a 1.5 -T MR and the following sequences Spin Eco- SE, Fast Spin Echo- FSE, Fluid Attenuation Inversion Recovery Echo Planar Imaging--FLAIR-EPI.

[Dilatation of Virchow-Robin spaces in patients with migraine].

The Virchow-Robin spaces (VRS) are subpial invaginations making a tubular revestment scabbard that contains a vase between the subarachnoid and subpial spaces. The magnetic resonance imaging (MRI) is the only imaging method able for evaluate this anatomic detail. We studied the possible association between dilated VRS and migraine.