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Antinociceptive and anti-inflammatory activity of α-d-mannan from Pseudozyma sp.

ABSTRACT: Pseudozyma sp. are yeasts that are commercially important due to their production of glycolipid biosurfactants, squalene, itaconic acid, and exopolysaccharide. The search for other analgesia inducing drugs, such as opiates and non-steroidal anti-inflammatory drugs (NSAIDs), as alternatives is beneficial. In this study, the antinociceptive and anti-inflammatory actions of α-d-mannan were studied using acetic acid-induced writhing, open field test, formalin test, and carrageenan-induced paw oedema tests in mice. The α-d-mannan obtained from Pseudozyma sp. was confirmed by methylation analysis, 1D and 2D NMR spectroscopic analysis, and GC-MS. The results show that α-d-mannan from Pseudozyma sp. has analgesic and anti-inflammatory activities.

Supplementary information

The online version contains supplementary material available at 10.1007/s13205-020-02635-1.

SUBMITTER: Valasques Junior GL

PROVIDER: S-EPMC7806684 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:Lectins are defined as carbohydrate-binding proteins/glycoproteins of none immune origin, they are ubiquitous in nature, exist from bacteria to human cells. And due to their carbohydrate-binding recognition capacity, they have been a useful biological tool for the purification of glycoproteins and their subsequent characterization. Some plant lectins have also been revealed to own antinociceptive, antiulcer, and anti-inflammatory properties, where these features, in many instances, depending on the lectin carbohydrate-binding site. Coronavirus disease of 2019 (COVID-19) is a respiratory disease that struck the entire world leaving millions of people dead and more infected. Although COVID-19 vaccines have been made available, and quite a large number of world populations have already been immunized, the viral infection rates remained in acceleration, which continues to provoke major concern about the vaccines' efficacy. The belief in the ineffectiveness of the vaccine has been attributed in part to the recurrent mutations that occur in the epitope determinant fragments of the virus. Coronavirus envelope surface is extensively glycosylated being covered by more than sixty N-linked oligomannose, composite, and hybrid glycans with a core of Man3GlcNAc2Asn. In addition some O-linked glycans are also detected. Of these glyco-chains, many have also been exposed to several mutations, and a few remained conserved. Therefore, numerous plant lectins with a specificity directed towards these viral envelope sugars have been found to interact preferentially with them and are suggested to be scrutinized as a possible future tool to combat coronaviruses including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) through blocking the viral attachment to the host cells. In this review, we will discuss the possible applications of plant lectins as anti-coronaviruses including SARS-CoV-2, antinociceptive, anti-inflammatory, and antiulcer agents with the proposed mechanism of their actions.

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Antinociceptive and anti-inflammatory activity of α-d-mannan from Pseudozyma sp.

Supplementary information

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