Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound   Target Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound

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Query: EC:1.16.3.1 (ceruloplasmin)
5,074 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Effects of feeding free chitosan to rats at graded levels up to 15 percent of the diet for eight weeks was investigated. Animals receiving diets containing 5 percent or less of chitosan grew well at comparable rates. Progressive growth reduction occurred when chitosan was increased to 10 and 15 percent of the diet and enlargement of liver and kidneys was observed only in animals receiving the highest level of dietary chitosan. Liver moisture, protein, lipid, ash, and nucleic acids; blood hemoglobin and packed cell volume; and serum total protein, albumin, ceruloplasmin and transferrin were determined. Values for these components of liver and blood were altered significantly in the animals receiving the highest level of chitosan when compared to control animals. However, in animals receiving 5 percent or less of dietary chitosan none of these measures of tissue composition was different from controls, except for liver protein concentration of rats fed the 5 percent of chitosan diet. Animal feeds containing coagulated by-products are not expected to contain over 0.2% chitosan in the total diet. No adverse effects have been observed at this level in rat feeding studies. Therefore the tolerance level for dietary chitosan appears to be well above the levels expected to be in animal feeds containing by-products recovered from food processing wastes by coagulation with chitosan.
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PMID:Effects of chitosan--a coagulating agent for food processing wastes--in the diets of rats on growth and liver and blood composition. 126 62

Haptoglobin, transferrin, alpha-1-feto-protein (AFP), alpha-1-acid glycoprotein (AAGP) and caeruloplasmin levels were estimated in 14 "small for dates" (SFD) and 31 "appropriate for dates" (AFD) babies by the single radial immunodiffusion method. The mean caeruloplasmin levels was observed to be significantly reduced in the SFD babies when compared with the AFD babies (t = 3.4582, P < 0.02). None of the other 4 acute phase proteins showed any significant differences in mean concentration between the SFD babies and the controls. The diminished caeruloplasmin levels observed in SFD babies agrees with previous reports in post-natal undernutrition. Our findings of no significant differences in the other 4 acute phase proteins between SFD and AFD babies are however at variance with previous observations of elevated levels of AFP, haptoglobin and AAGP and reduced levels of transferrin in malnourished infants.
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PMID:Acute phase proteins in "small for dates" babies. II. Haptoglobin, transferrin, alpha-1-feto protein, alpha-1-acid glycoprotein and caeruloplasmin levels. 128 8

In proliferative diseases of the homeopathic system before starting and at the end of treatment, the values of 8 acute phase factors were studied simultaneously, that is: seromucoid, sialic acid, alpha 1 acid glycoprotein, alpha 1 antitrypsin, haptoglobin, ceruloplasmin, transferrin, and fibrinogen. In chronic myeloid and lymphatic leukaemia no constant increase nor decrease of the concentration of any of the factors was found. In non-Hodgkin lymphoma the concentration of one factor -ceruloplasmin was constantly increased, and that of two factors--sialic acid and fibrinogen was decreased, while in plasmocytoma the concentration of two factors--haptoglobin and ceruloplasmin was constantly increased. At the end of treatment the concentration of certain factors was changing. In chronic myeloid leukaemia the concentration of ceruloplasmin, fibrinogen, and seromucoid was decreasing, while in non-Hodgkin lymphoma the concentration of haptoglobin and fibrinogen was increasing, in chronic lymphatic leukaemia the concentration of haptoglobin and increasing, in chronic lymphatic leukaemia the concentration of haptoglobin and transferrin was increasing, and in plasmocytoma the concentration was increasing of haptoglobin, sialic acid, and transferrin. The result of treatment in chronic myeloid leukaemia was good, in non-Hodgkin lymphoma and chronic lymphatic leukaemia--moderate, and in plasmocytoma it was least beneficial.
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PMID:[Factors of the "acute phase" in proliferative diseases of the hemopoietic system]. 129 50

In the serum of 41 children with trisomy 21 (Down syndrome) the concentration was determined of 10 proteins by the radial immunodiffusion method. It was found that the concentration of prealbumin and alpha 2-macroglobulin was lower than in healthy children. The concentration of acid alpha 1-glycoprotein, alpha 1-antitrypsin, haptoglobin, C4 complement component, and hemopexin was higher than in healthy children. The concentration of ceruloplasmin, C3 complement component, and transferrin was similar as in healthy children.
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PMID:[Concentration of serum proteins in children with down syndrome]. 129 55

A study was made of the interaction of plasma ascorbate and ascorbate free radical (AFR) with exogenously added iron. The quantitative determination of AFR has the advantage that transient increases in ascorbate oxidation can be directly monitored by e.p.r. spectroscopy. An AFR signal was found in the plasma of all donors and was unaffected by superoxide dismutase, catalase and the strong iron chelator deferoxamine. These findings and the rapid decrease in AFR under a nitrogen atmosphere suggest that plasma AFR is probably a result of air auto-oxidation. Iron loading of plasma did not affect the intensity of the AFR signal until the iron concentration approached or exceeded the plasma latent iron-binding capacity. In iron-overloaded plasma, the intensity of the AFR signal increased to about 10 times the normal level before decreasing rapidly to undetectable levels after 15-20 min. Determination of plasma ascorbate showed that the disappearance of AFR was due to a complete loss of the vitamin. When 50 microM-ascorbate was loaded with iron in iso-osmotic phosphate buffer there was an increase in the AFR signal, independent of the iron concentration, which was stable at least for 15 min. Thus the rate of ascorbate loss in the iso-osmotic phosphate buffer was considerably lower than in iron-overloaded plasma. The addition of different iron chelators produced comparable effects on the intensity of the AFR signal in both iron-overloaded plasma and ascorbate solution. These results suggest that the characteristic behaviour of plasma AFR after iron loading is due to its specific iron-binding capacity and to plasma ferroxidase activity. The ferroxidase activity of plasma is important to promote the transfer of Fe2+ into transferrin without a transient ascorbate oxidation. Spin-trapping studies with 5,5-dimethyl-1-pyrroline N-oxide and N-t-butyl-alpha-phenylnitrone revealed that iron-overloaded plasma was unable to produce spin-trap adducts even in the presence of 50-300 microM-hydrogen peroxide or 100 microM-azide. Evidence of OH. radical formation was obtained only after the addition of EDTA. Therefore, iron-overloaded plasma itself does not produce a Fenton reaction and, if ascorbate does indeed have a free-radical-mediated pro-oxidant role, it is not detectable in plasma by spin-trapping experiments.
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PMID:Iron-induced ascorbate oxidation in plasma as monitored by ascorbate free radical formation. No spin-trapping evidence for the hydroxyl radical in iron-overloaded plasma. 131 30

The respiratory burst of neutrophils generates oxygen radicals that can result in lipid peroxidation and may contribute to acute lung injury in the adult respiratory distress syndrome (ARDS). Because ceruloplasmin and transferrin are inhibitors of lipid peroxidation and may play a role in regulating tissue injury, antigen levels of ceruloplasmin and transferrin and ceruloplasmin oxidase levels were measured in the serum and bronchoalveolar lavage fluid (BALF) of ARDS patients (n = 28), patients at risk for ARDS (n = 22), and normal control subjects (n = 45). Serum ceruloplasmin levels were similar in ARDS (mean +/- SEM) (3.8 +/- 0.3 microM) and at-risk (3.3 +/- 0.4 microM) patients compared with control subjects (3.2 +/- 0.2 microM). Serum transferrin levels were decreased in ARDS (14.9 +/- 1.7 microM) and at-risk (20.4 +/- 1.7 microM) patients compared with normal control subjects (32.9 +/- 1.2 microM), and serum transferrin levels correlated with serum unsaturated iron binding capacity (UIBC). Ceruloplasmin was detected in only one of 38 normal BALF samples (0.002 +/- 0.002 microM) and two of 13 at-risk BALF samples (0.15 +/- 0.1 microM), yet it was present in 17 of 23 ARDS BALF samples (0.9 +/- 0.2 microM). Transferrin was also increased in ARDS BALF (5.4 +/- 1.1 microM) compared with at-risk (0.7 +/- 0.5 microM) and normal (0.4 +/- 0.1 microM) samples. Ceruloplasmin that was present in the BALF and serum samples had functional oxidase activity, and purified human ceruloplasmin inhibited hydroxyl radical formation by phorbol myristate acetate (PMA)-stimulated neutrophils.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Ceruloplasmin and transferrin levels are altered in serum and bronchoalveolar lavage fluid of patients with the adult respiratory distress syndrome. 131 27

Normal human plasma contains numerous high- and low-molecular-mass redox-active molecules that are able to react rapidly with organic and inorganic oxygen radicals. The ability of such plasma molecules to substantially inhibit, or delay, free-radical mediated oxidation of added substrates has led to their classification as important biological antioxidants. Using phospholipids to detect organic oxygen radicals and deoxyribose to detect inorganic oxygen radicals, we here show that the primary antioxidants of normal human plasma reside mainly in two plasma proteins representing no more than 4% of the total proteins present. The iron-binding properties of transferrin and the iron-oxidising properties of caeruloplasmin, at a reaction dilution of 1:50, offer considerable protection against organic and inorganic oxygen radicals generated by iron and ascorbate. Plasma thiol-group-containing molecules, at concentrations well below those that would be required to compete with the detector molecule (based on known second-order rate constants for reaction with hydroxyl radicals) inhibited damage to deoxyribose, but stimulated damage to phospholipids.
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PMID:Antioxidant protection against organic and inorganic oxygen radicals by normal human plasma: the important primary role for iron-binding and iron-oxidising proteins. 132 59

The study deals with the mechanism of organism's adaptive responses to the effect of radiation in widely ranging dose. Post-irradiation metabolic changes were evaluated in canine blood as well as in murine blood, spleen, bone marrow and liver using the EPR spectroscopy. It was shown that the dynamics of changes in transferrin and ceruloplasmin pools and ribonucleotide reductase activity were phase-dependent with the maxima at the 2nd, 6th and 10-12th days after irradiation. Such dynamics was observed at various irradiation doses applied. The data allow us to suggest that the nonspecific compensatory--adaptive reactions of organisms develop as the response to irradiation. The dose-response function of the reaction intensity was found to be linear. The shape of the dose-response curve indicates that the minimum response of organism depends on the dose linearly up to 3.2 Gy (for dogs) as well as the maximum one. However, in the case of low-dose irradiation (0.25 or 0.5 Gy) there were deviations of maximum responses from the linearity, i.e. the amplification of the amplitude of compensatory adaptive reactions. These effect were shown to be dependent upon initial individual characteristics of animal blood and to be related to the "depressed" or "activated" state of organism prior to irradiation. The ribonucleotide reductase activity was measured in bone marrow and spleen of animals by the EPR method. The nature of non-repairable DNA damage is discussed in view of the inactivation of ribonucleotide reductase.
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PMID:[The dose dependence of the development of compensatory-restorative body reactions to irradiation. The EPR method]. 133 Dec 16

1. During pathological states of iron-overload or oxidant stress, low-molecular-mass iron can become available within extracellular fluids. 2. This iron would be converted to the ferrous state were it not for the protective anti-oxidant protein caeruloplasmin. 3. The ferrous-ion-oxidizing activity of caeruloplasmin rapidly converts ferrous ions back to the less reactive ferric state so that they can bind to available binding sites on transferrin. 4. Cerebrospinal fluids, however, often appear to contain low-molecular-mass iron, high levels of ascorbate and low levels of ferroxidase activity with little or no iron-binding capacity. 5. When iron ions are present in cerebrospinal fluid they are therefore likely to be in the ferrous state. 6. The development and application of an assay to speciate and measure ferrous ions in simple aqueous solution and their redox cycling activity in biological fluids is described.
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PMID:Ferrous ions detected in cerebrospinal fluid by using bleomycin and DNA damage. 137

Exocoelomic and amniotic fluids were obtained by selective puncture under ultrasound guidance in normal human pregnancies between 5 and 13 weeks of gestation. Evaluation of the protein patterns in the exocoelomic fluid showed qualitative and quantitative changes with advancing gestation. During the second month of gestation, three electrophoretic bands were found with mobility compatible with albumin, alpha 1-globulin and beta-globulin and composed of at least eight proteins including: pre-albumin, albumin, alpha-fetoprotein (alpha-FP), alpha 1-protease inhibitor, haptoglobin, ceruloplasmin, transferrin and immunoglobulin-G, as revealed by immunoblotting. Protein patterns obtained between 9 and 13 weeks were comparable in exocoelomic fluid and in maternal serum except for the presence of alpha-FP in the alpha 1-globulin band. At the same gestational age, protein electrophoresis of amniotic fluid revealed four bands corresponding to albumin, alpha-FP, haptoglobin and transferrin. Creatinine levels were significantly lower (P less than 0.01) in amniotic fluid than in exocoelomic fluid, and alpha-FP levels were similar in both exocoelomic and amniotic fluids. These results suggest that the exocoelomic fluid is a transudate of the maternal serum except for the presence of high levels of alpha-FP, that amniotic and exocoelomic cavities are separated by a non-permeable membrane and that the secondary yolk sac plays an important role in early protein synthesis and transfer.
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PMID:Determination of protein pattern in embryonic cavities of human early pregnancies: a means to understand materno-embryonic exchanges. 138 5


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