Thunb. (PMT) has shown promise in exerting cerebrovascular protective effects, and its potential for treating ischemic stroke (IS) has garnered attention. However, the lack of clarity regarding its chemical constituents and mechanisms has significantly hindered its clinical application.
View Article and Find Full Text PDFResearchers have always been interested in polysaccharide degradation because of the increased biological activity and usability following degradation. In this work, low molecular weight galactomannan (LMW-GM) was produced through the degradation of galactomannan by HO and oxalic acid (OA). The optimal reaction conditions were found by conducting the response surface optimization experiment based on single-factor experiment and kinetics analysis.
View Article and Find Full Text PDFGlabridin is a natural isoflavone with estrogen receptor agonism and significant anti-tumor activity. Additionally, glabridin has a regulation effect on PI3K/AKT/mTOR pathway, but its exact target remains unclear. In this study, we evaluated the antitumor activity of glabridin against breast cancer and prostate cancer cells, and further clarified its targeting to PI3K.
View Article and Find Full Text PDFCancer is a major disease threatening human health worldwide, among which non-small-cell lung cancer (NSCLC) is the most deadly. Clinically, almost all anticancer drugs eventually fail to consistently benefit patients due to serious drug resistance. AKT is a key effector of the PI3K/AKT/mTOR pathway, which is closely related to the occurrence, development, and drug resistance of tumors.
View Article and Find Full Text PDFLow-molecular-weight-galactomannan (LMW-GM) is an edible polysaccharide with various biological activities. However, it is used in the field of neuroprotection. In this study, two types of LMW-GMs from Sesbania cannabina were obtained by gluconic acid extraction (GA-LMW-GM) and enzymatic hydrolysis (GMOS).
View Article and Find Full Text PDFFactors causing differences in immune activities between pectin and pectin-derived oligosaccharides have not been fully studied. In this article, four samples with different molecular weights and monosaccharide compositions, including polygalacturonic acid (poly-GA) and its oligosaccharide (oligo-GA), navel orange peel pectin (NP) and its oligosaccharide (oligo-NP), were used to compare their immunomodulatory properties on RAW264.7 cells.
View Article and Find Full Text PDFPlants use cell-surface immune receptors to recognize pathogen-specific patterns to evoke basal immunity. ENHANCED DISEASE SUSCEPTIBILITY (EDS1) is known to be crucial for plant basal immunity, whereas its activation mechanism by pattern recognition remains enigmatic. Here, we show that the fungal pattern chitin induced the plasma membrane-anchored receptor-like cytoplasmic kinase PBS1-LIKE 19 (PBL19) to undergo nuclear translocation in Arabidopsis.
View Article and Find Full Text PDFAppl Biochem Biotechnol
October 2022
Cold plasma pretreatment has the potential of anti-aging. However, its molecular mechanism is still not clear. Here, cold plasma pretreatment was firstly used to investigate the anti-aging effects of Caenorhabditis elegans using transcriptomic technique.
View Article and Find Full Text PDFEnzymatic hydrolysis using β-mannanase and α-galactosidase is necessary to produce low molecular weight galactomannan (LMW-GM) from galactomannans (GM) in the leguminous seeds. In this study, different ratios of avicel and melibiose were used as the inductors (carbon sources) for Trichoderma reesei to metabolize the enzyme cocktail containing β-mannanase and α-galactosidase using one-pot fermentation technology. The obtained enzyme cocktail was used to efficiently produce LMW-GM from GM in Sesbania cannabina seeds.
View Article and Find Full Text PDFGalactomannan and its degradation products have been gaining attention based on their possible means for improving the natural defense of the host through modulation of the bacterial population in the gut. Herein, incomplete degradation products of galactomannan (IDPG) was supplemented into the diet of aged laying hens to investigate the efficacy of IDPG on the gut microbiome. Four treatments with six replicates of twelve 68-wk-old laying hens (Hy-Line variety brown) each were fed a basal diet supplemented with 0%, 0.
View Article and Find Full Text PDFThe present study evaluated the rheological properties of galactomannan from Sesbania cannabina. The intrinsic viscosity of galactomannan was determined to be 8.63 ± 0.
View Article and Find Full Text PDFGalactomannan (GM) is widely recognized as an immune enhancer; however, the underlying molecular mechanism is still unknown. Herein, four products with molecular weights in descending order, namely GM40, GM50, GM65, and GMOS, were separated from incomplete degradation products of Sesbania cannabina GM by ethanol precipitation, followed by their immunomodulatory activity. Through FTIR and XPS spectra, the amount of free hydroxyl groups was shown to decrease in the following order: GM > GM50 > GMOS > GM40 > GM65.
View Article and Find Full Text PDFThere is an increasing emphasis on the transformation of lignocellulosic biomass into versatile products. The feasibility of preparing xylooligosaccharides (XOS) by hydrolysis of sorghum stalk (SS) using organic and inorganic acids was studied. The influences of different acids (gluconic acid, acetic acid, sulfuric acid, and oxalic acid), process time and temperature on the hydrolysis of SS were explored.
View Article and Find Full Text PDFHerein, we assessed the impact of dietary addition of mannanoligosaccharide (MOS) on the growth, intestinal morphology, serum immune status, and oxidative status in Partridge Shank chickens. For the experiment, one-day-old chicks (=192) were randomized into six replicates (=8/replicate) and fed four different diets: a basal diet containing 0 (Control group), 0.5, 1, or 1.
View Article and Find Full Text PDFSesbania cannabina galactomannan (2%) solutions added with strongly hydrated ions (NaCO, NaHPO, NaCl) and weakly hydrated ions (NaNO) at different ionic strengths were rheologically characterized. The four selected salts dramatically decreased the intrinsic viscosity of galactomannan solution in the following order of effectiveness: NaCO < NaHPO < NaCl < NaNO. This conforms effectively to the Hofmeister anion series.
View Article and Find Full Text PDFBiological activity of incomplete degradation products of polygalacturonic acid (IDPP) is closely related to its molecular weight and molecular weight distribution. Therefore, it is necessary to provide a reliable quantitative characterization method for evaluating these types of bioproducts. A novel method was established in this work for the quantitative characterization of IDPP based upon ethanol fractional precipitation.
View Article and Find Full Text PDFThis study was conducted to investigate the efficacy of incomplete degradation products of galactomannan (IDPG) on the production performance, egg quality, plasma parameters, and lipid metabolites of laying hens. A total of 288 laying hens were allocated into 4 treatments and fed diets supplemented with 0%, 0.01%, 0.
View Article and Find Full Text PDFFront Bioeng Biotechnol
June 2021
The utilization of lignin from different lignocellulosic biomass is the hot topic for the biorefinery of biomass. In this paper, magnetic lignin nanoparticles (MLN) were prepared by kraft lignin from bamboo residue and FeO with different ratios via Mannich reaction. The surface morphology and structure of magnetic lignin were characterized and analyzed by X-ray powder diffraction, Fourier transform infrared spectroscopy, and transmission electron microscopy, which confirmed that the MLN were successfully prepared.
View Article and Find Full Text PDFAs known, the nutritional status affects antioxidant capacity and immunity, ultimately affecting the body's health. Recently, hemicellulosic polysaccharides of galactomannan in different biomass and their degradation products are gaining more attention due to excellent antioxidant enhancement and immunomodulatory activity. Herein, incomplete degradation products of galactomannan (IDPG) were prepared from the enzymatic hydrolysis of seeds, followed by the and experiments.
View Article and Find Full Text PDFSeleno-polysaccharides have become a major topic for research owing to their high anti-oxidative capacity and immune-enhancing activities. In this study, galactomannan (GM) was isolated from Sesbania cannabina, and next modified using HNO-NaSeO method to obtain six varieties of seleno-galactomannans (SeGMs). FT-IR and GPC results showed the changes in chemical structure of SeGMs, indicating successful combination of selenium and GM.
View Article and Find Full Text PDFA novel method for the quantitative characterization of incomplete degradation products of galactomannan (IDPG) was developed by ethanol fractional precipitation. In this work, IDPG in the enzymatic hydrolyzate of Sesbania cannabina galactomannan was fractionated into several fractions with high recovery (>96 %) by ethanol fractional precipitation. The average molecular weights of obtained fractions were in descending order with varied corresponding contents of galactomannan degradation products.
View Article and Find Full Text PDFAn integrated process to increase the yield of incomplete degradation products of galactomannan (GalM) especially for galactomanno-oligosaccharides (GalMOS) was suggested. Trichoderma reesei employed Avicel or GalMOS as a carbon source to produce β-mannanase or α-galactosidase independently, with a result of 3.78 ± 0.
View Article and Find Full Text PDFWith the great demand for high-strength integrated materials in various industries, products from renewable resources were expected to replace petroleum-based materials. Inspired by the hierarchical structure of nacre, in this work, bentonite and graphene oxide (GO) were incorporated into the galactomannan (GM) matrix to prepare a ternary nanocomposite, which was further cross-linked and strengthened with borate. The chemical structure of the composite was analyzed with SEM, FTIR, XPS and XRD, revealing a co-assembly reaction between GO, bentonite and GM, accompanied by the borate crosslinking.
View Article and Find Full Text PDFZhong Nan Da Xue Xue Bao Yi Xue Ban
February 2020
Objectives: To observe the short-term efficacy of EX-PRESS filtration shunt implantation in the treatment of open angle glaucoma, and to analyze the safety and effectiveness of the surgical method.
Methods: From April 2017 to January 2018, a total of 28 eyes of 17 open angle glaucoma patients in Xiangya Hospital of Central South University were screened. Among them, 16 eyes in the experimental group were treated with EX-PRESS filtration shunt (P200)implantation, and 12 eyes in the control group underwent trabeculectomy.