Search PubMed⌕ Search

Biomedical subjects

H Baba

Publications and source records attributed to H Baba.

At least 469 records · Page 26Linked to original sources
PubMed1984

Quantitative determination of human aqueous proteins by crossed immunoelectrophoresis.

Crossed immunoelectrophoresis having high resolving power and sensitivity was applied to the human aqueous humor, in an attempt to determine which of the following is the most appropriate parameter for detecting the concentration of protein components: 1) the height of the precipitation line, 2) the length of the line itself or 3) the area under the precipitation line. Furthermore, the concentrations of several proteins were determined in the aqueous humor from normal subjects. Although it has been reported that the area under the precipitation line was proportional to the concentration of the protein, the present study showed that both the height and the length of the precipitation line are also equally valid for concentration determinations. The amount of protein antigens in 100 ml of the normal human aqueous humor were prealbumin 0.31-0.41 mg, albumin 5.4-6.5 mg, alpha 1-acid glycoprotein 0.05-0.17 mg and transferrin 1.3-1.7 mg.

Adult↗
PubMed1983

Histochemical and polarization optical investigation for glycosaminoglycans in exfoliation syndrome.

The iris of patients with exfoliation syndrome and senile cataracts were studied with a polarization microscope as well as histochemically. Amorphous substance stained by pH 1.0 alcian blue was observed in exfoliation syndrome on the posterior surface of the iris. This layer was thicker in exfoliation syndrome than in senile cataracts. The major component of this layer was verified as chondroitin sulphate and the minor one as hyaluronic acid. Polarization microscopic study demonstrated the presence of more sulphated glycosaminoglycans in exfoliation syndrome than in senile cataracts. Abnormal metabolism of glycosaminoglycans is indicated in the iris of exfoliation syndrome.

Aged↗
PubMed1983

Probability of the presence of glycosaminoglycans in aqueous humor.

The crossed immunoelectrophoretic pattern of 62 eyes was reexamined, and 6 cases were selected for their abnormal patterns that demonstrated the presence of glycosaminoglycans in aqueous humor. Three of these cases were exfoliation syndrome, one was pigment liberation syndrome, and the other two were rhegmatogeneous retinal detachment. The abnormal electrophoretic patterns showed peculiar tailing and a biphasic pattern in albumin. Similar patterns could be reproduced in vitro by adding chondroitin sulfate to normal aqueous humor. Abnormal overproduction of glycosaminoglycans in exfoliation syndrome was indicated. Similar tailing of albumin was also noticed in 2 of 3 cases of rhegmatogeneous retinal detachment. It is supposed that the glycosaminoglycans produced by visual cells pass through the retinal break and vitreous cavity on the way to the anterior chamber. The Schwartz syndrome may be explained by this mechanism.

Adult↗
PubMed1983

Studies of human tear proteins--2. Analysis by crossed immunoelectrophoresis of tears from diseased eyes.

By filter paper strips, tears were collected from patients with diseases in the anterior ocular segment and analysed by crossed immunoelectrophoresis. Their crossed immunoelectrophoretic patterns were compared with those of normal subjects. Tear proteins from Sjögren's syndrome. Mikulicz's disease and tumor of the lacrimal gland showed abnormal patterns by crossed immunoelectrophoresis. Tears were collected from patients with lacrimal gland tumor after resection of the tumors. Ten tear-specific proteins were more decreased in these patients than in normal subjects. Serum proteins in the tears of these patients were increased, but secretory IgA (s-IgA) showed no change. A patient with symblepharon showed a marked decrease of both tear-specific proteins and s-IgA. Tears from patients wit epidemic keratoconjunctivitis (EKC), vernal conjunctivitis, herpes simplex keratitis (HSK) and adult inclusion conjunctivitis were analyzed. No remarkable change in tear-specific proteins could be noticed between tears from a case with an early stage of EKC or slight inflammation of the conjunctivitis and tears from the fellow unaffected eye. However, an increase was noted in serum proteins of the diseased eye. The tears collected from a case with severe EKC showed a decrease of tear-specific proteins, but an increase of serum proteins; especially s-IgA showed a significant increase. Tears from patients with EKC, HSK, vernal conjunctivitis and adult inclusion conjunctivitis showed differences in the immunoelectrophoretic patterns of tear proteins according to the severity and duration of the inflammation, as well as the amount of tears secreted. After due consideration of the analysis of tear proteins from some diseases of the anterior ocular segment, the following secretory sites of tear proteins under normal conditions were projected. The 10 tear-specific proteins reported in the previous paper are thought to be largely secreted from the main lacrimal gland. s-IgA is mainly secreted through the excretory ducts of the main lacrimal gland. Serum proteins in the tears are thought to come through the conjunctiva.

Adolescent↗