PubMed Health⌕ Search

Biomedical subjects

T Brito

Publications and source records attributed to T Brito.

5 recordsLinked to original sources
PubMed2003

Congenital chylothorax: a case report.

A case of unilateral congenital hydrothorax diagnosed at 21 weeks and treated with a pleuro-amniotic shunt at 23 weeks' gestation is presented. The rapid production of pleural fluid led to the development of polyhydramnios which was treated with a selective Cox inhibitor. Due to worsening of the hydrothorax, a third thoracocentesis was performed at 30 weeks' gestation prior to a Cesarean section. The neonate responded well to mechanical ventilation, a thoracic drainer that was inserted between days 5 and 14, fluid and protein replacement and gradual transition from parenteral to intestinal nutrition. Early diagnosis of chylothorax should be treated by thoraco-amniotic drainage to prevent fetal pulmonary hypoplasia and congestive cardiac failure. Polyhydramnios is a complication of this therapy and may require treatment with a Cox inhibitor.

Adult↗
PubMed1997

Glycosylation properties of the Pichia pastoris-expressed recombinant kringle 2 domain of tissue-type plasminogen activator.

The oligosaccharide structures present on Asn5 of the Pichia pastoris-expressed recombinant kringle 2 domain of tissue-type plasminogen activator [(r)-[K2tPA]] have been determined by a combination of techniques, including HPLC, FPLC, gel filtration, endoglycosidase digestions and mass spectrometry. The major oligosaccharides identified after their liberation by either hydrazinolysis or by the enzyme peptide:N4-(N-acetyl-beta-glucosaminyl)asparaginyl amidase, were in the oligomer range of (mannose)8(N-acetylglucosamine)2 (Man8GN2) to Man18GN2. The preponderance of these glycans spanned Man9GN2 to Man12GN2, and the major overall product was Man10GN2. An additional (less than 5%) amount of the polypeptide was hyperglycosylated. In contrast with glycoproteins produced in Saccharomyces cerevisiae, our results with specific mannosidase digestions were consistent with previous studies showing that (alpha 1,3)-linked mannose residues were not present in extensions of the core Man8GN2 unit. The results show that the N-linked glycosylation pathways in P. pastoris are substantially different from those found in S. cerevisiae, with shorter Man(alpha 1,6) extensions to the core Man8GN2 and the apparent lack of significant Man(alpha 1,3) additions representing the major processing modality of N-linked glycans in P. pastoris.

Chromatography, Gel↗
PubMed1997

[Solid-phase immunoenzyme ass for detecting Giardia lamblia antigens].

An ELISA sandwich for the detection of Giardia lamblia antigens in human faeces was standardized. 175 samples were studied: 77 positive, 61 negative to cysts and/or trophozoites by direct faeces test, and 19 positive to other parasite different from G. lamblia. The sensitivity of the technique was 94.8% and the specificity 98.3%. The method detects an antigen concentration of 31 ng. The procedure is simple, sensitive and specific so, it may be useful for diagnosis and in epidemiological studies.

Animals↗
PubMed1978

Bovine experimental paracoccidioidomycosis intradermic test standardization.

Three intratesticulary inoculated bovines revealed to be susceptible to experimental paracoccidioidomycosis. The experimental infection was self limited with no tendency to dissemination during a follow up period of five months. The histopathologic lesions characterized by granulomatous inflammatory foci, associated or not to necrosis, were found in the testicles, spermatic cords and testicular tunicae. In some of both lesions types the yeast cells of P. brasiliensis were present. The experimental infection did not cure in a follow up period of five months. The immunological response either cellular or humoral were delayed in relation to what happens in other animal species. The three experimentally infected bovines were utilized for some standardization of the paracoccidioidin intradermic test. A type and dose of an antigen which gives a clear reading for the positive tests was determined. The humoral responses were detected mainly by the complement fixation reaction. It was not possible to demonstrate humoral antibodies by the agar immunodiffusion test.

Animals↗