Track topics on Twitter Track topics that are important to you
Blood plasma metalloproteins that contain copper (Cu), iron (Fe), zinc (Zn) and/or other metals/metalloids are potential disease biomarkers because the bloodstream is in permanent contact with organs. Their quantification and/or the presence of additional metal-entities or the absence of certain metalloproteins in blood plasma (e.g. in Wilson's disease) may provide insight into the dyshomeostasis of the corresponding metal (s) to gain insight into disease processes. The first step in investigating if the determination of plasma metalloproteins is useful for the diagnosis of diseases is their definitive qualitative identification. To this end, we have added individual highly pure Cu, Fe or Zn-containing metalloproteins to plasma (healthy volunteer) and analyzed this mixture by size-exclusion chromatography (SEC) coupled to an inductively coupled plasma atomic spectrometer (ICP-AES), simultaneously monitoring the emission lines of Cu, Fe and Zn. The results clearly identified ceruloplasmin (Cp), holo-transferrin (hTf), and α-macroglobulin (αM), which verifies our previous assignments. Interestingly, another major Fe-peak in plasma was identified as a haptoglobin (Hp)-hemoglobin (Hb) complex. This Hp-Hb complex is formed after Hb, which is released during the hemolysis of erythrocytes, binds to the plasma protein Hp. The Hp-Hb complex formation is known to be one of the strongest interactions in biochemistry (K≈1pmol/L) and is critical because it prevents kidney toxicity of free Hb. Hence, the simultaneous determination of Cp, hTf, αM and the Hp-Hb complex in plasma in <25min has the potential to provide new insight into disease processes associated with the bioinorganic chemistry of Cu, Fe and Zn.
This article was published in the following journal.
Name: Journal of inorganic biochemistry
Background Intravascular hemolysis and in vitro hemolysis are prevalent contributors to failed blood sample analysis in the routine hospital laboratory. Interferences by hemoglobin in spectrophotometr...
Microparticles are sub-micron vesicles possessing protein and other materials derived from the plasma membrane of their parent cells, and literature suggests that they may have a role in the pathophys...
Delayed ischemic neurological deficit (DIND) is a major driver of adverse outcomes in patients with aneurysmal subarachnoid hemorrhage (aSAH) defining an unmet need for therapeutic development. Cell-f...
Human hemoglobin is an essential protein, whose main function as an oxygen carrier is indispensable for life. Hemoglobin is a cofactor-containing protein with heme as prosthetic group. Same as in huma...
The article contains the literature review on laboratory criteria of detection and monitoring of the progression of the disease in patients with the diagnosis of diabetes mellitus. It also covers the ...
Newborns and children with life-threatening heart and lung failure may require support with ECMO (extracorporeal membrane oxygenation). With ECMO, oxygen and carbon dioxide are exchanged a...
The Haptoglobin (Hp) gene locus at chromosome 16q22 is polymorphic with two alleles denoted 1 and 2 .The gene product exists in three phenotypes: 1-1, 2-1, and 2-2. The Haptoglobin 2 alle...
Patients with major orthopedic surgery will be recruited. Participants will be monitored for delirium after surgery. Participants' blood will be harvested for the determination of haptoglo...
The purpose of this study is to show that a certain protein called haptoglobin protects against preeclampsia which is a common pregnancy complication.
ALT-2074 (BXT-51072) belongs to a class of drugs called "glutathione peroxidase mimics." ALT-2074 works by imitating a substance produced in various tissues in the body, which prevents dam...
Products of non-enzymatic reactions between GLUCOSE and HEMOGLOBIN A, occurring as a minor fraction of the hemoglobin components of human erythrocytes. Hemoglobin A1c is hemoglobin A with glucose covalently bound to the terminal VALINE of the beta chain. Glycated hemoglobin A is used as an index of the average blood sugar level over a lifetime of erythrocytes.
Minor hemoglobin components of human erythrocytes designated A1a, A1b, and A1c. Hemoglobin A1c is most important since its sugar moiety is glucose covalently bound to the terminal amino acid of the beta chain. Since normal glycohemoglobin concentrations exclude marked blood glucose fluctuations over the preceding three to four weeks, the concentration of glycosylated hemoglobin A is a more reliable index of the blood sugar average over a long period of time.
A highly anionic organic phosphate which is present in human red blood cells at about the same molar ratio as hemoglobin. It binds to deoxyhemoglobin but not the oxygenated form, therefore diminishing the oxygen affinity of hemoglobin. This is essential in enabling hemoglobin to unload oxygen in tissue capillaries. It is also an intermediate in the conversion of 3-phosphoglycerate to 2-phosphoglycerate by phosphoglycerate mutase (EC 184.108.40.206). (From Stryer Biochemistry, 4th ed, p160; Enzyme Nomenclature, 1992, p508)
An adult hemoglobin component normally present in hemolysates from human erythrocytes in concentrations of about 3%. The hemoglobin is composed of two alpha chains and two delta chains. The percentage of HbA2 varies in some hematologic disorders, but is about double in beta-thalassemia.
Substances that can carry oxygen to and carbon dioxide away from the tissues when introduced into the blood stream. They are used to replace hemoglobin in severe hemorrhage and also to perfuse isolated organs. The best known are perfluorocarbon emulsions and various hemoglobin solutions.
Blood is a specialized bodily fluid that delivers necessary substances to the body's cells (in animals) – such as nutrients and oxygen – and transports waste products away from those same cells. In vertebrates, it is composed of blo...
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...