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Biomedical subjects

G Ricci

Publications and source records attributed to G Ricci.

At least 343 records · Page 19Linked to original sources
PubMed1978

Oxidation of hypotaurine to taurine by ultraviolet irradiation.

Oxidation of hypotaurine to taurine is known to occur in vivo. Search for an enzyme performing that oxidation has been unsuccessful. However, fast and quantitative oxidation of hypotaurine (and other sulfinates) by ultraviolet irradiation has now been observed. The reaction is first order and pH-dependent, and its rate depends strongly on the kind of sulfinate irradiated. Only the corresponding sulfonate is recovered as the product under the relatively mild conditions used. Catalase or superoxide dismutase does not affect the oxidation, which is oxygen-dependent. A simple reaction scheme is proposed to account for the findings.

Cysteine↗
PubMed1977

[Site of 1st appearance of pain in primary arthrosis. Clinico-statistical studies in a thermal bath environment].

An investigation of the first site of joint pain in 3,419 subjects with primary arthrosis is reported. In both sexes, the lumbar region was by far the most common, followed by the neck, the knee, and other joints; marked and significant differences between males and females were noted. While the data do not clearly show that the first pain site and the first site of involvement are the same, it is felt that this is a fairly constant occurrence. Since bearing joints are concerned in the lumbar region and a psychosomatic site in that of the neck--this, in fact, is twice as frequent in women as in men, this constancy serves to bring into discussion the primary and secondary nature of arthrosis, at least in a certain number of cases.

Baths↗
PubMed1975

Detection of anti-HBs in two groups of institutionalized people by solid-phase radioimmunoassay using human labelled antibody.

A modification of Ausria II-125 solid-phase radio-immunoassay has been performed for the detection of anti-HGs in sera from 217 subjects living in two institutions. 129 subjects were mentally retarded and belonged to an institution; the other 88 were healthy people living in another institution, 74 of whom were residents and 14 members of the assistance staff. These 88 subjects were tested again three months later. Contemporaneously HBsAg was tested by Ausria II-125. Out of 129 mentally retarded subjects, 18 (13.9%) were positive for anti-HBs and 6 (4.6%1 for HBsAg. Out of 88 apparently healthy residents and members of the assistance staff, anti-HBs was detected in 24 (27.3%) and in 25 (28.4%), in the first and second bleeding, respectively; the distribution of anti-HBs carriers between residents and staff was quite similar. The screening of anti-HBs by rHA, performed in the same 88 subjects, showed a greater sensitivity than RIA modified in detecting anti-HBs carriers. Our findings outline the importance of the detection of anti-HBs as a marker of the virus B infection.

Adolescent↗
PubMed1975

[Detection of anti-HBAg by solid phase radioimmunoassay using labeled human antibody].

A new solid-phase radioimmunoassay technique for the detection of anti-HBAg is described. The test is characterized by a neutralization step of guinea-pig anti-HBAg by means of HBAg-RIA positive pooled sera. The first results obtained using this technique gave 21 anti-HBAg positive sera (26.9%) among 78 institutionalized subjects. One of these sera was HBAg positive at the same time.

Adolescent↗