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Alginate-modifying enzymes: biological roles and biotechnological uses.

Frontiers in microbiology

Ertesvåg H.
PMID: 26074905
Front Microbiol. 2015 May 27;6:523. doi: 10.3389/fmicb.2015.00523. eCollection 2015.

Alginate denotes a group of industrially important 1-4-linked biopolymers composed of the C-5-epimers β-D-mannuronic acid (M) and α-L-guluronic acid (G). The polysaccharide is manufactured from brown algae where it constitutes the main structural cell wall polymer. The physical properties...

Analysis of nucleotide diphosphate sugar dehydrogenases reveals family and group-specific relationships.

FEBS open bio

Freas N, Newton P, Perozich J.
PMID: 27047744
FEBS Open Bio. 2016 Jan 11;6(1):77-89. doi: 10.1002/2211-5463.12022. eCollection 2016 Jan.

UNLABELLED: UDP-glucose dehydrogenase (UDPGDH), UDP-N-acetyl-mannosamine dehydrogenase (UDPNAMDH) and GDP-mannose dehydrogenase (GDPMDH) belong to a family of NAD (+)-linked 4-electron-transfering oxidoreductases called nucleotide diphosphate sugar dehydrogenases (NDP-SDHs). UDPGDH is an enzyme responsible for converting UDP-d-glucose to UDP-d-glucuronic acid, a product...

Protein release from alginate matrices.

Advanced drug delivery reviews

Wee S, Gombotz WR.
PMID: 10837629
Adv Drug Deliv Rev. 1998 May 04;31(3):267-285. doi: 10.1016/s0169-409x(97)00124-5.

There are a variety of both natural and synthetic polymeric systems that have been investigated for the controlled release of proteins. Many of the procedures employed to incorporate proteins into a polymeric matrix can be harsh and often cause...

On the nature of the cell wall constituents of Laminaria spp. Mannuronic acid.

The Biochemical journal

Bird GM, Haas P.
PMID: 16744600
Biochem J. 1931;25(2):403-11. doi: 10.1042/bj0250403.

No abstract available.

Application of diffusion-edited NMR spectroscopy for selective suppression of water signal in the determination of monomer composition in alginates.

Magnetic resonance in chemistry : MRC

Vilén EM, Klinger M, Sandström C.
PMID: 21815213
Magn Reson Chem. 2011 Sep;49(9):584-91. doi: 10.1002/mrc.2789. Epub 2011 Aug 04.

Alginate is a linear copolymer of 1-4 linked β-D-mannuronic acid (M) and 1-4 linked α-L-guluronic acid (G). The physical properties of these polysaccharides such as gel properties and viscosity are largely correlated to the monomer composition (M/G ratio), the...

Production of M2000 (β-d-mannuronic acid) and its therapeutic effect on experimental nephritis.

Environmental toxicology and pharmacology

Mirshafiey A, Rehm B, Abhari RS, Borzooy Z, Sotoude M, Razavi A.
PMID: 21783790
Environ Toxicol Pharmacol. 2007 Jul;24(1):60-6. doi: 10.1016/j.etap.2007.02.002. Epub 2007 Feb 16.

UNLABELLED: The present research introduces the method of Production of M2000 (β-d-mannuronic acid) and its therapeutic effect on experimental model of nephritis. M2000 was produced using enzymatic and chemical procedure on prepared alginate from Pseudomonas fluorescens. The experimental glomerulonephritis...

Nano- and microstructural evolution of alginate beads in simulated gastrointestinal fluids. Impact of M/G ratio, molecular weight and pH.

Carbohydrate polymers

G Gómez-Mascaraque L, Martínez-Sanz M, Hogan SA, López-Rubio A, Brodkorb A.
PMID: 31427011
Carbohydr Polym. 2019 Nov 01;223:115121. doi: 10.1016/j.carbpol.2019.115121. Epub 2019 Jul 26.

Alginate microcapsules were prepared using three different alginate grades and incubated under simulated digestion conditions. Their micro- and nanostructural changes were studied using microscopy, laser diffraction and small angle X-ray scattering. Both the molecular weight and M/G ratio affected...

Identification of a Pivotal Residue for Determining the Block Structure-Forming Properties of Alginate C-5 Epimerases.

ACS omega

Stanisci A, Tøndervik A, Gaardløs M, Lervik A, Skjåk-Bræk G, Sletta H, Aachmann FL.
PMID: 32149266
ACS Omega. 2020 Feb 24;5(8):4352-4361. doi: 10.1021/acsomega.9b04490. eCollection 2020 Mar 03.

Alginate is a linear copolymer composed of 1→4 linked β-d-mannuronic acid (M) and its epimer α-l-guluronic acid (G). The polysaccharide is first produced as homopolymeric mannuronan and subsequently, at the polymer level, C-5 epimerases convert M residues to G...

Tau and amyloid beta differentially affect the innate immune genes expression in Drosophila models of Alzheimer's disease and β- D Mannuronic acid (M2000) modulates the dysregulation.

Gene

Barati A, Masoudi R, Yousefi R, Monsefi M, Mirshafiey A.
PMID: 34600048
Gene. 2022 Jan 15;808:145972. doi: 10.1016/j.gene.2021.145972. Epub 2021 Sep 30.

Alzheimer's disease (AD) is the most common cause of dementia and neuroinflammation is considered as one of the main culprits. The aim of this study was to evaluate the independent role of Aβ42 and tau on the inflammatory pathway...

Assessment of Biochemical Determinants in Multiple Sclerosis Patients Following the Oral Administration of β-D-Mannuronic Acid (M2000).

Current drug discovery technologies

Nikouei Moghaddam MR, Movahedi M, Bananej M, Najafi S, Moghadam NB, Saadat P, Mokhtarian F, Mirshafiey A.
PMID: 32964823
Curr Drug Discov Technol. 2021;18(5):e17092020186049. doi: 10.2174/1570163817999200918104333.

BACKGROUND: Multiple sclerosis is an autoimmune chronic inflammatory disease of the central nervous system that can lead to some serious disabilities. Despite using various immunomodulatory and anti-inflammatory drugs that have therapeutic effects, they cannot reduce its progression completely and...

Structure and dynamics of sodium alginate as elucidated by chemical shift anisotropy and site-specific spin-lattice relaxation time measurements.

European biophysics journal : EBJ

Dey KK, Gayen S, Ghosh M.
PMID: 34254174
Eur Biophys J. 2021 Oct;50(7):963-977. doi: 10.1007/s00249-021-01559-9. Epub 2021 Jul 12.

The biocompatible, biodegradable, linear copolymer sodium alginate is fabricated from [Formula: see text] linked [Formula: see text]-D-mannuronic acid (M block) and [Formula: see text]-L-guluronic acid (G-block). It has wide applications in drug delivery, cell encapsulation, and commercial application in...

Influence of β-D-mannuronic Acid, as a New Member of Non-steroidal Anti- Inflammatory Drugs Family, on the Expression Pattern of Chemokines and their Receptors in Rheumatoid Arthritis.

Current drug discovery technologies

Aslani M, Ahmadzadeh A, Aghazadeh Z, Zaki-Dizaji M, Sharifi L, Hosseini M, Mirshafiey A.
PMID: 31657689
Curr Drug Discov Technol. 2021;18(1):65-74. doi: 10.2174/1570163816666191023103118.

BACKGROUND: Based on the encouraging results of phase III clinical trial of β-Dmannuronic acid (M2000) (as a new anti-inflammatory drug) in patients with RA, in this study, we aimed to evaluate the effects of this drug on the expression...

Showing 1 to 12 of 52 entries