mucopolysaccharide/hypoxia

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Hypoxia in fibroblast cultures. 4. Cell density, glucose utilization and acid mucopolysaccharides in 1% O2 concentration.

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Secondary cultures of embryonic rat fibroblasts incubated in Eagle medium with Hepes buffer at pH 6.6 and 7.4 were maintained in hypoxia of 1% O2 for 48 hours. The acid mucopolysaccharides were isolated from medium plus cells and fractionated on cellulose microcolumns according to SVEJCAR and

Hypoxia in fibroblast cultures. 3. 35S-sulfate incorporation into acid mucopolysaccharides as influenced by 5% O2 hypoxia with simultaneous changes in the lactate-and H-ion concentrations.

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The influence of 5% O2 hypoxia on the 35S-sulfate incorporation into different mucopolysaccharide fractions was studied in monolayer cultures of embryonic rat fibroblasts before reaching the stationary phase. Besides the O2 concentration also the pH value and lactate concentration were varied in the

Hypoxia in fibroblast cultures. 2. Influence of pH on the distribution pattern of acid mucopolysaccharides.

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Secondary cultures of embryonic rat fibroblasts [NEUPERT et al., Exp. Path. 7, 19-28 (1972)] were cultured in 21% and 5% O2 concentration at pH 6.6 and 7.4 for 6 or 8 days. The acid mucopolysaccharides were isolated and fractionated by alcohol precipitation, papain digestion, CPC-precipitation and

Arteriosclerosis and hypoxia. 2. Biochemical changes in mucopolysaccharides and collagen of rabbit aorta induced by systemic hypoxia.

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[Histochemical contributions to the metabolism of glycogen and mucopolysaccharides in experimental cerebral edema induced by hypoxia-hypercapnia].

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ADAPTATIVE SHIFT OF TISSUE METABOLISM IN LOCAL HYPOXIA RESULTING IN HIGHER MUCOPOLYSACCHARIDE CONTENT.

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Effect of age on the cardiovascular remodelling induced by chronic intermittent hypoxia as a murine model of sleep apnoea.

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Chronic intermittent hypoxia (CIH) is a major determinant of the cardiovascular morbidity associated with obstructive sleep apnoea (OSA), and the magnitude of CIH impact may be influenced by ageing. Here, we assessed the role of ageing in the early cardiovascular structural remodelling

Hypoxia in fibroblast cultures. I. Changes in glucose consumption by 5 vol.-% oxygen concentration and reduced pH.

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In secondary cultures of rat embryonic fibroblasts the glucose consumption and lactate concentration were comparatively investigated in 5 and 21 Vol.-% O2 environment at pH 6.6 and pH 7.4 (HEPES-buffer). The results were correlated with cell density. The following observations were made: 1. At pH

[Histochemical characteristics of the secretory elements of the vermiform appendix following surgical trauma, circulatory hypoxia and immunization].

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Histochemical methods were applied to determination of salomycin, dermatansulfate, keratosulfate and neutral mucopolysaccharides in the goblet cells of rabbit appendix. Sialomycin and neutral mucopolysaccharides were found in the glands. Immunization with human gamma globulin was followed in the

Central sleep apnea in hypothyroidism.

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This is a report of a 45-yr-old male patient who developed central sleep apnea syndrome because of hypothyroidism. In response to L-thyroxine therapy, the patient became euthyroid, and the apneic phenomenon disappeared. Previous reports have suggested that hypothyroidism can produce obstructive

Sleep apnoea in Scheie's syndrome.

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An 18-year-old student presented with a two-year history of daytime sleepiness and noisy breathing during sleep. Both he and his brother, aged 25 years, had Scheie's syndrome, a mucopolysaccharidosis characterised by small stature, micrognathia, corneal clouding, hepatosplenomegaly, raised urinary

The effect of increased pulmonary blood flow on the pulmonary vascular bed in pigs.

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Increased pulmonary blood flow was produced in 1-month-old piglets by means of left pneumonectomy, arteriovenous fistulas in the neck, and a combination of both. Physiologic and histologic studies of the pulmonary vascular bed were done 1-9 months after operation. A progressive, moderate increase in

Regional changes in kynurenic acid, quinolinic acid, and glial fibrillary acidic protein concentrations in the fetal sheep brain after experimentally induced placental insufficiency.

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OBJECTIVE This study was undertaken to examine the effects of chronic embolization of the umbilical circulation during late gestation on regional concentrations of quinolinic acid and kynurenic acid (neuroactive products of tryptophan catabolism) and of the astrocyte-associated glial fibrillary

Oxygen diffusion: an enzyme-controlled variable parameter.

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Previous oxygen microelectrode studies have shown that the oxygen diffusion coefficient (DO₂) increases during extracellular PO₂ decreases, while intracellular PO₂ remained unchanged and thus cell function (spike activity of neurons). Oxygen dependency of complex multicellular organisms requires a

Intestinal mucosal changes in thalassaemia major.

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Ten infants and children suffering from Thalassaemia major, proven by clinical, hematological and biochemical criteria, were subjected to intestinal biopsy. Specimens were studied for histological and histochemical patterns. The histological picture showed shortening and fusion of villi with

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