hexosamine


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hexosamine

 [hek´sōs-am″in]
a nitrogenous sugar in which an amino group replaces a hydroxyl group.

hex·os·a·mine

(hek-sō-sam'ēn), Although this word is correctly stressed on the second-last syllable, U.S. usage often stresses it on the last syllable.
The amine derivative (NH2 replacing OH) of a hexose, for example, glucosamine.

hex·os·a·mine

(heks-ōs'ă-mēn)
The amine derivative (NH2 replacing OH) of a hexose (e.g., glucosamine).

hex·os·a·mine

(heks-ōs'ă-mēn)
The amine derivative of a hexose.
References in periodicals archive ?
Hexosamine and uronic acid, commonly known as matrix molecules, are involved in the synthesis of new extracellular matrices.
Mancuso et al., "The hexosamine biosynthetic pathway couples growth factor-induced glutamine uptake to glucose metabolism," Genes & Development, vol.
In general, hyperglycemia and possibly elevated free fatty acids (FFA) levels may lead to oxidative stress in diabetic patients, which indirectly results in activate cellular stress-sensitive pathways as signaling molecules including the stress-activated signaling pathways of nuclear factor-[kappa]B (NF-[kappa]B), N[H.sub.2]-terminal Jun kinases/stress-activated protein kinase (JNK/SAPK), p38 mitogen-activated protein (MAP) kinase, and hexosamine [39,40].
(3) nonenzymatic glycation and formation of advanced glycation end products (AGE) [49], (4) activation of protein kinase C (PKC) isoforms [57], (5) epigenetic and chromatin modifications [52], (6) activation of transforming growth factor- (TGF-) [beta]-activated kinase 1 signaling [53], (7) activation of the hexosamine pathway and modification of proteins by N-acetylglucosamine (O-GlcNAc modification) [58], and (8) inhibition of AMP-activated protein kinase (AMPK) [59].
The main components of the stone matrix are proteins (64%), nonamino sugars (9.6%), hexosamine as glucosamine (5%), water (10%), and inorganic ash (10.4%).
Studies have shown that an increase in LDL-cholesterol is directly related to the development of atherosclerosis, the inflammatory process triggered by the oxidation of LDL-cholesterol that occurs due to the release of oxidizing agents during the metabolic pathways (advanced glycation end products, protein kinase C pathway, and hexosamine pathway) activated by hyperglycemia [12,13].
The major metabolic changes occurring at the cellular level are: increased aldose reductase activity (polyol-sorbitol pathway], diacylglycerol--protein kinase C activation [6] (myo-inositol pathway], the hexosamine activation pathway and formation of advanced glycation end products (AGEs].
Hexosamine biosynthesis pathway and O-GlcNAcylation have important functions in pig pre-implantation embryonic development and that inhibition of O-GlcNAcase is fatal for development [7].
Studies show that the endoplasmic reticulum (a type of organelle that plays an important role in transporting sugars and proteins across the cell membrane) and the hexosamine pathway, which I described earlier in this article, are involved in apoptosis.
The colour developed was read spectrophotometrically after 30 mins at 530nm to calculate the hexosamine content of the tissue.
After this process, the next hexosamine addition is critical as it determines which GAG is formed, and the alteration of the progression perhaps leads to protein formation disorders, which could lead to cancer.
Song et al., "Activation of the hexosamine pathway leads to deterioration of pancreatic [beta]-cell function through the induction of oxidative stress," Journal of Biological Chemistry, vol.