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This results in a major risk of methemoglobinemia caused by nitrates ingested in drinking water, [13] dehydration (usually caused by gastroenteritis with diarrhea), sepsis, or topical anesthetics containing benzocaine or prilocaine resulting in blue baby syndrome. Nitrates used in agricultural fertilizers may leak into the ground and may ...
For example, a methemoglobin concentration of 1.5 g/dL may represent a percentage of 10% in an otherwise healthy patient with a baseline hemoglobin of 15 mg/dL, whereas the presence of the same concentration of 1.5 g/dL of methemoglobin in an anemic patient with a baseline hemoglobin of 8 g/dL would represent a percentage of 18.75%.
Dimethyl fumarate (DMF) is the methyl ester of fumaric acid and is named after the earth smoke plant (Fumaria officinalis). [8] Dimethyl fumarate combined with three other fumaric acid esters (FAEs) is solely licensed in Germany as an oral therapy for psoriasis (brand name Fumaderm ). [ 9 ]
Hemoglobinemia can be caused by intrinsic or extrinsic factors. When hemoglobinemia is internally caused, it is a result of recessive genetic defects that cause the red blood cells to lyse, letting the hemoglobin spill out of the cell into the blood plasma. In intravascular hemolysis, hemoglobin is released and binds with haptoglobin. This ...
Methemoglobinemia is a condition caused by elevated levels of methemoglobin in the blood. Methaemoglobin is a form of hemoglobin that contains the ferric [Fe 3+] form of iron, instead of the ferrous [Fe 2+] form . Methemoglobin cannot bind oxygen, which means it cannot carry oxygen to tissues.
One of the core advantages of digital microfluidics, and of microfluidics in general, is the use and actuation of picoliter to microliter scale volumes. Workflows adapted from the bench to a DMF system are miniaturized, meaning working volumes are reduced to fractions of what is normally required for conventional methods.
In cyanide poisoning, sodium nitrite creates methemoglobinemia, which removes cyanide from the mitochondria. [6] Sodium thiosulfate then binds with cyanide, creating the nontoxic thiocyanate. [6] Sodium thiosulfate came into medical use for cyanide poisoning in the 1930s. [8] It is on the World Health Organization's List of Essential Medicines. [9]
The principal biological role of cytochrome b 5 is reduction of methemoglobin, so cytochrome b 5 deficiency can also result in elevated methemoglobin levels and/or methemoglobinemia, similarly to deficiency of cytochrome b 5 reductase (methemoglobin reductase). [1]