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Biomedical subjects

L Ribeiro

Publications and source records attributed to L Ribeiro.

10 recordsLinked to original sources
PubMed1991

Omphaloplasty.

Two different omphaloplasty procedures are presented. The first procedure, resulting in a four-point, star-shaped navel and indicated for patients with classic abdominoplasties, aims at preventing widening of the navel, as well as stenosis, later on, postoperatively. The second procedure, based on the rotation of the remaining navel and indicated for both patients with midi or mini abdominoplasties and patients with secondary omphaloplasty, also aims at preventing stenosis and widening of the umbilical scar; however, no external scars remain after this procedure.

Bandages↗
PubMed1990

Degradation of crystallins from a psoriatic patient undergoing PUVA therapy.

Comparative physico-chemical and spectroscopic analyses were carried out in human lens proteins obtained from extracts of normal, senile and PUVA cataracts. Mass recovery analysis reveals a large protein concentration loss in the PUVA cataract relative to the normal lens and senile cataract. This protein loss parallels an increase in the degraded polypeptide chains. However, the tryptophan content (2.1 mol/mol of 20 kDa protein subunit) and the apparent fluorescence quantum yield (phi f = 0.056) of the tryptophan residues which are believed to be involved in the development of UV-induced cataracts are unchanged after age-related alterations and/or in vivo photochemistry associated with psoralen (8MOP) photosensitized reactions.

Aging↗
PubMed1990

[Cor triatriatum. Echo/Doppler diagnosis followed by immediate surgical correction. Report of a clinical case].

As Cor Triatriatum is a rare congenital cardiopathy and benign after corrective surgery, decisive means of diagnosis are essential. The AA review some descriptive theoretical concepts and make reference to the difficulties, present at times, in diagnosis by cardiac catheterization. They consider Eco-Doppler to be the means of excellence for its recognition describing all aspects that point to the diagnosis of this pathology. Described is the case of a 12 month old baby, in whom some semiological findings had lead to a wrong diagnosis. In the discussion, additional diagnosis is eliminated due to some anatomic characteristics defined by echocardiography.

Cor Triatriatum↗
PubMed1989

Revising the nasal tip: a new approach.

After a very cautious dissection, the crossing of cartilages is going to produce a "spring effect" which, in pushing them to the right position, will consequently correct the pinch. This is a simple procedure, indicated only for nose tips or, if associated with other techniques, to correct secondary rhinoplasty patients.

Female↗
PubMedDate not supplied

IgE and complement in allergic children.

The following measurements were made using radial immunodiffusion with commercial M-Partigen plaques (Behringwerke, Marburg): Global-IgE in the serum of 29 children (17 atopic asthmas, 3 non atopic asthmas and 9 acute urticarias); C3 and C4 complement fractions in 56 patients (27 atopic asthmas, 11 non atopic asthmas and 18 acute urticarias); C3PA complement fraction in 41 patients (18 atopic asthmas, 9 non atopic asthmas and 14 acute urticarias). High IgE serum levels were observed chiefly in the cases of atopic asthma with polysensitization and in urticarias. The anomaly of the complement system most often found in children was an increase of C4 (23,2% of the cases), not related to the clinical form or duration of the disease. An increase of the C3 fraction (14,6% of the cases) was also observed together with an increase of these two fractions in all the cases where an increase of C3PA was observed. Only in 11,1% of atopic asthmas was a decrease of the serum concentration values of C3 observed.

Age Factors↗