Preparation, properties, and plasma retention of human hemoglobin derivatives: comparison of uncrosslinked carboxymethylated hemoglobin with crosslinked tetrameric hemoglobin.

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Preparation, properties, and plasma retention of human hemoglobin derivatives: comparison of uncrosslinked carboxymethylated hemoglobin with crosslinked tetrameric hemoglobin.

Human hemoglobin A has been crosslinked by diisothiocyanatobenzenesulfonate to give a limited number of products in a yield of approximately 70%. The predominant product was crosslinked between subunits within a tetramer and had a Mr of 64,000; no higher Mr species were formed. This product had one crosslink per tetramer located between the NH2 termini of its alpha chains, as established by HPL...

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Synthetic genes encoding the human alpha- and beta-globin polypeptides have been expressed from a single operon in Escherichia coli. The alpha- and beta-globin polypeptides associate into soluble tetramers, incorporate heme, and accumulate to greater than 5% of the total cellular protein. Purified recombinant hemoglobin has the correct stoichiometry of alpha- and beta-globin chains and contains...

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This is a report concerning a concurrent case of hemoglobin J Iran (Hb J Iran) and Hemoglobin H (Hb H) disease in an Iranian woman. The patient was coincidentally found during the course of routine pre-marital genetic counselling for her son. The diagnosis of heterozygote Hb J Iran for her son, ultimately led to the diagnosis of concurrent Hb J Iran and Hb H disease. The hematological examinati...

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Given healthy dogs, fed abundant iron and protein-free or low protein diets, with sustained anemia due to bleeding, we can study the capacity of these animals to produce simultaneously new hemoglobin and plasma protein. The reserve stores of blood protein producing materials in this way are very largely depleted, and levels of 6 to 8 gm. per cent for hemoglobin and 4 to 5 gm. per cent for plasm...

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Background: Hemoglobin (Hb) and hematocrit (Hct) have been used routinely in the diagnosis of neonatal anemia and polycythemia. Objective: To measure the cord blood Hb and Hct and to determine their association with maternal Hb and Hct. Methods: 170 healthy neonates born through normal vaginal delivery with gestation age of 37-42 wks and birth weight of 2.5-4 kg, and their mothers were included...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 1991

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.88.8.3329