Biomedical subjects

E Lenzi

Publications and source records attributed to E Lenzi.

14 recordsLinked to original sources

PubMed2000

Effects of dietary cadmium and its bioconcentration in tilapia Oreochromis niloticus.

The administration of cadmium, as food supplement, its bioaccumulation, and the effects on the development of tilapia Oreochromis niloticus were investigated. The average size and weight and its behavior compared with controls were investigated during the period January 31, 1997, until March 31, 1999. At intervals of 60 days the measurements of size and weight were performed, and the concentration of cadmium in feces, water, muscular tissue, and viscera were determined by atomic absorption spectroscopy. The initial average cadmium concentration in food was 5 mg small middle dotkg(-1) and only after 6 months a small effect on size and weight could be observed. With increases in cadmium concentration to 50 mg small middle dotkg(-1), beginning after the 7th month, and 100 mg small middle dotkg(-1) after the 16th month, a clear difference in size and weight and also in behavior could be observed. An LC(50) value of 40 mg small middle dotkg(-1) was observed after the 23rd month.

Administration, Oral↗

PubMed1997

Mercury in two fish species from the Paraná river floodplain, Paraná, Brazil.

Total mercury concentrations were measured in dorsal muscle tissue of two edible fish species, Prochilodus scrofa 'curimba' and Pseudoplatystoma corruscans 'pintado', respectively detritivorous and carnivorous. Fish species were sampled monthly between February 1993 and January 1994 and bimonthly between April 1994 and February 1995 in three subsystems of Paraná river' system (Ivinhema River/Lake Patos; Baía River/Lake Guaraná and Paraná River/Cortado Channel), between Paraná and Mato Grosso do Sul. Total mercury was determined by HNO3/H2SO4/V2O5 digestion, SnCl2 reduction, and vapour generation method analysis (CGCH 900), adapted to Atomic Absorption Spectrometer (CGAA 7000 ABC). The mean mercury concentrations varied from 82.0 to 310.5 ng g(-1) and from 68 to 294.4 ng g(-1) in 'curimbas' and 'pintados', respectively. Mercury level increases in sexually mature 'curimbas'. Mercury values detected do not exceed the prevailing criteria for issuance of fish consumption advisories (< 500 ng g(-1)).

Journal Article↗

PubMed1995

[Aneurysm of the hepatic artery. A case report].

The authors describe the case of the sixty-one-year-old man admitted to hospital because of a growing jaundice that after the surgical operation proved to be caused by a compression of the PBV determined by a voluminous aneurysm of the hepatic artery. The integrity of the gastroduodenal artery made it possible to make a simple aneurysmectomy with clinic. The patient was discharged from hospital after fifteen days from the surgical operation; he was surgically healed and with normal enzymatic values. The follow-up two years after discharge confirmed a hematochemical state within normal limits.

Aneurysm↗

PubMed1981