scholarly journals Antioxidant and Hepatoprotective Activities of Polysaccharides from Spent Mushroom Substrates (Laetiporus sulphureus) in Acute Alcohol-Induced Mice

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Huajie Zhao ◽  
Yufei Lan ◽  
Hui Liu ◽  
Yongfa Zhu ◽  
Weiru Liu ◽  
...  
Keyword(s):  
Functional Foods ◽  
Reducing Power ◽  
Monosaccharide Composition ◽  
Vital Role ◽  
Hot Water ◽  
Composition Analysis ◽  
Laetiporus Sulphureus ◽  
Exploitation And Utilization ◽  
Natural Drugs

In order to contribute to the exploitation and utilization of spent mushroom substrates (SMS) of Laetiporus sulphureus, hot-water-extractable polysaccharides (H-SMPS) and enzymatic-extractable polysaccharides (E-SMPS) were successfully isolated from SMS of L. sulphureus. Both H-SMPS and E-SMPS were found to have high reducing power and potential scavenging activities against hydroxyl, DPPH, and superoxide anion radicals. In vivo assays showed that the administration of H-SMPS and E-SMPS has potential hepatoprotective effects against alcohol-induced alcoholic liver disease (ALD), possibly brought about by improving liver function, increasing antioxidant status, and reducing lipid peroxidation. Furthermore, monosaccharide composition analysis showed that fucose may play a vital role in guaranteeing stronger hepatoprotection. These results may provide references for the exploitation of the SMS of L. sulphureus as a source of H-SMPS and E-SMPS, which in turn can be used as functional foods or natural drugs for the prevention of ALD and other liver diseases.

scholarly journals Polysaccharides study of three mushrooms growing in Mongolia

2018 ◽  
pp. 47-52
Author(s):  
Naranmandakh Sh ◽  
V V Golovchenko ◽  
О А Patova ◽  
Degiimaa T ◽  
Soninkhuu Sh
Keyword(s):  
Molecular Mass ◽  
Monosaccharide Composition ◽  
Water Soluble ◽  
Hot Water ◽  
Inonotus Obliquus ◽  
Average Molecular Mass ◽  
Medicinal Mushrooms ◽  
Laetiporus Sulphureus ◽  
Soluble Polysaccharide ◽  
Mushroom Sample

This study was aimed to analyze of polysaccharides from fruiting bodies of Fomitopsis officinalis (Vill.ex.Fr.), Laetipo-rus sulphureus (Bull.ex.Fr.) and Inonotus obliquus (Pers.ex.Fr.) medicinal mushrooms, growing in Mongolia. As a result of “step by step” extraction method we have obtained 4 fractions of polysaccharide (water-soluble: HWE50 and HWE100; cold alkali-soluble CA; hot alkali-soluble HA) form the each mushroom sample. Polysaccharide fraction’s yields extracted by hot water from Fomitopsis officinalis (Vill.ex.Fr.), Laetiporus sulphureus (Bull.ex.Fr.) and Inonotus obliquus (Pers.ex.Fr.) were 3.68%, 8.82% and 12.84%. Yields of alkali-soluble polysaccharides were 18.64%, 68.03% and 28.75%, respectively, which results more than water fractions. The main monosaccharide composition in all polysaccharide fractions were glucose, and a content of glucose was varied 30%-100%. Therefore, they can be considered glucans. Water-soluble polysaccharide fractions contain fucose (until 12%), man-nose (until 18%) and galactose (until 30%). An average molecular mass of water-soluble polysaccharides were calculated Mw 100–150kDa or it can be considered a low, while an average molecular mass of alkali-soluble polysaccharides was a bit high 300–750кDа. All polysaccharides were heterogenic. Монгол орны гурван зүйл мөөгний полисахаридын судалгааны дүн Хураангуй: Монгол оронд ургадаг агил мөөг Fomitopsis officinalis (Vill.ex.Fr.), туруудай мөөг Laetiporus sulphureus (Bull.ex.Fr.) ба чага мөөг Inonotus obliquus (Pers.ex.Fr.) гэсэн гурван зүйлийн эмийн мөөгний полисахаридын найрлагыг судлав. Мөөгийг шат дараалан хандлах аргаар мөөг тус бүрээс 4 төрлийн полисахарид (усанд хандлагддаг: HWE50 ба HWE100; хүйтэн шүлтэнд хандлагддаг CA; халуун шүлтэнд хандлагддаг HA)-ыг ялган авав. Усанд хандлагддаг полисахаридуудын гарц агил Fomitopsis officinalis (Vill.ex.Fr.), туруудай Laetiporus sulphureus (Bull.ex.Fr.) ба чага Inonotus obliquus (Pers.ex.Fr.) мөөг бүрт тус тус 3.68%, 8.82% ба 12.84% байв. Харин шүлтэнд хандлагддаг полисахаридын гарц нь усанд хандлагддаг полисахаридтай харьцуулахад их буюу тус тус 18.64%, 68.03% ба 28.75% байв. Бүх полисахаридын хувьд үндсэн мономер нь глюкоз ба түүний агууламж 30%-100%-д хүрч байв. Иймд тэдгээр нь глюкан полисахаридууд болно. Мөн усанд хандлагддаг полисахаридуудын найрлаганд фукоз (12% хүртэл), манноз (18% хүртэл) галактоз (30% хүртэл) агуулагдаж байв. Усаар хандлагддаг глюканууд нь бага дундаж молекул масстай (Mw 100–150кДа) байсан бол натрийн гидроксидоор хандлагддаг глюкануудын молекул масс 300–750кДа харьцангуй их байв. Бүх глюкан нь гетероген чанартай байна. ЦСР-ын аргын дүнд ялган авсан полисахаридууд ойролцоо бүтэцтэй салбарласан хэлхээтэй [бета]- глюканууд болох нь батлагдав. Түлхүүр үгс: агил, туруудай, чага, полисахаридын бүтэц, дундаж молекулын масс

scholarly journals The Effect of Hemicellulose and Lignin on Properties of Polysaccharides in Lentinus edodes and Their Antioxidant Evaluation

Molecules ◽  
2019 ◽  
Vol 24 (9) ◽  
pp. 1834 ◽  
Author(s):  
Feifei Wu ◽  
Xin Jia ◽  
Lijun Yin ◽  
Yongqiang Cheng ◽  
Yuxin Miao ◽  
...  
Keyword(s):  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Monosaccharide Composition ◽  
Control Group ◽  
Composition Analysis ◽  
Lentinus Edodes ◽  
Polysaccharide Biosynthesis ◽  
C Elegans

Lentinus edodes, whose polysaccharides possess diverse bioactivities, commonly grows on hardwood sawdust composed of hemicellulose, lignin and cellulose. In this study the effect of hemicellulose and lignin on the growth of mycelia, as well as the physicochemical properties of polysaccharides from L. edodes mycelia (LEPs) were investigated. The antioxidant properties of LEPs were evaluated through radical scavenging assays in vitro and through the Caenorhabditis elegans model in vivo. The results showed that hemicellulose at a concentration of 4% increased the yield of the mycelia biomass to twice that of the control group. Meanwhile, when cultured with 4.0% hemicellulose, the polysaccharide content of the mycelia was raised by 112.2%. In addition, the appropriate concentration of lignin could stimulate mycelia growth and polysaccharide biosynthesis in L. edodes. Monosaccharide composition analysis showed that a higher content of xylose was found when mycelia were cultured with higher concentrations of hemicellulose. The molecular structure, including the molecular weight distribution and configuration type, was affected by hemicellulose and lignin. Antioxidant assays indicated that LEPs supplemented with hemicellulose and/or lignin possessed higher radical scavenging abilities in vitro and exhibited a thermal resistance effect on C. elegans, implying that the antioxidant effect is potent in vivo. In summary, the addition of hemicellulose and lignin improved the biosynthesis and bioactivity of LEPs.

Carbohydrate Metabolism Regulated by Antisense vicR RNA in Cariogenicity

2019 ◽  
Vol 99 (2) ◽  
pp. 204-213 ◽  
Author(s):  
L. Lei ◽  
B. Zhang ◽  
M. Mao ◽  
H. Chen ◽  
S. Wu ◽  
...  
Keyword(s):  
Carbohydrate Metabolism ◽  
Messenger Rna ◽  
High Performance ◽  
Response Regulator ◽  
Gel Permeation Chromatography ◽  
Monosaccharide Composition ◽  
Composition Analysis ◽  
Rnase Iii ◽  
Bacterial Gene

Streptococcus mutans is a major cariogenic pathogen that resides in multispecies oral microbial biofilms. The VicRK 2-component system is crucial for bacterial adaptation, virulence, and biofilm organization and contains a global and vital response regulator, VicR. Notably, we identified an antisense vicR RNA (AS vicR) associated with an adjacent RNase III–encoding ( rnc) gene that was relevant to microRNA-size small RNAs (msRNAs). Here, we report that ASvicR overexpression significantly impeded bacterial growth, biofilm exopolysaccharide synthesis, and cariogenicity in vivo. Transcriptome analysis revealed that the AS vicR RNA mainly regulated carbohydrate metabolism. In particular, overproducing AS vicR demonstrated a reduction in galactose and glucose metabolism by monosaccharide composition analysis. The results of high-performance gel permeation chromatography revealed that the water-insoluble glucans isolated from AS vicR presented much lower molecular weights. Furthermore, direct evidence showed that total RNAs were disrupted by rnc-encoded RNase III. With the coexpression of T4 RNA ligase, putative msRNA1657, which is an rnc-related messenger RNA, was verified to bind to the 5′-UTR regions of the vicR gene. Furthermore, AS vicR regulation revealed a sponge regulatory-mediated network for msRNA associated with adjacent RNase III–encoding genes. There was an increase in AS vicR transcript levels in clinical S. mutans strains from caries-free children, while the expression of AS vicR was decreased in early childhood caries patients; this outcome may be explored as a potential strategy contributing to the management of dental caries. Taken together, our findings suggest an important role of AS vicR-mediated sponge regulation in S. mutans, indicating the characterization of lactose metabolism by a vital response regulator in cariogenicity. These findings have a number of implications and have reshaped our understanding of bacterial gene regulation from its transcriptional conception to the key roles of regulatory RNAs.

Antioxidant Activity, Phenolic Content and Hematoprotective Effects of Cleome arabica Polyphenolic Leaf Extract

2019 ◽  
Author(s):  
C. Tigrine ◽  
A. Kameli
Keyword(s):  
Antioxidant Activity ◽  
Biological Effects ◽  
Reducing Power ◽  
Hematological Toxicity ◽  
Protective Effects ◽  
Ferrous Ions ◽  
Polyphenolic Extract ◽  
Cleome Arabica

In this study a polyphenolic extract from Cleome arabica leaves (CALE) was investigated for its antioxidant activity in vitro using DPPH•, metal chelating and reducing power methods and for its protective effects against AraC-induced hematological toxicity in vivo using Balb C mice. Results indicated that CALE exhibited a strong and dose-dependent scavenging activity against the DPPH• free radical (IC50 = 4.88 μg/ml) and a high reducing power activity (EC50 = 4.85 μg/ml). Furthermore, it showed a good chelating effects against ferrous ions (IC50 = 377.75 μg/ml). The analysis of blood showed that subcutaneous injection of AraC (50 mg/kg) to mice during three consecutive days caused a significant myelosupression (P < 0.05). The combination of CALE and AraC protected blood cells from a veritable toxicity. Where, the number of the red cells, the amount of hemoglobin and the percentage of the hematocrite were significantly high. On the other hand, AraC cause an elevation of body temperature (39 °C) in mice. However, the temperature of the group treated with CALE and AraC remained normal and did not exceed 37.5 °C. The observed biological effects of CALE, in vitro as well as in vivo, could be due to the high polyphenol and flavonoid contents. In addition, the antioxidant activity of CALE suggested to be responsible for its hematoprotective effect.

Development of Mucoadhesive Buccal Drug Delivery System of Propranolol Hydrochloride Using Aster ericoides Mucilage

2020 ◽  
Vol 10 (2) ◽  
pp. 133-148
Author(s):  
Ankaj Kaundal ◽  
Pravin Kumar ◽  
Rajendra Awasthi ◽  
Giriraj T. Kulkarni
Keyword(s):  
Buccal Cavity ◽  
Three Dimensional ◽  
Hot Water ◽  
Fickian Diffusion ◽  
Aster Ericoides ◽  
Dimensional Network ◽  
Buccal Tablet ◽  
Significant Difference ◽  
Volunteer Group

Aim: The study was aimed to develop mucoadhesive buccal tablets using Aster ericoides leaves mucilage. Background : Mucilages are naturally occurring high-molecular-weight polyuronides, which have been extensively studied for their application in different pharmaceutical dosage forms. Objective: The objective of the present research was to establish the mucilage isolated from the leaves of Aster ericoides as an excipient for the formulation of the mucoadhesive buccal tablet. Method: The mucilage was isolated from the leaves of Aster ericoides by maceration, precipitated with acetone and characterized. Tablets were prepared using wet granulation technique and evaluated for various official tests. Results: The mucilage was found to be non-toxic on A-431 and Vero cell lines. It was insoluble but swellable in cold and hot water. The results indicate that mucilage can form a three-dimensional network. The pH of the mucilage (6.82 ± 0.13) indicated that it might be non-irritant to the buccal cavity. The mucilage was found to be free from microbes. The release of drug was by Fickian diffusion. The in vivo buccal tablet acceptance was 80%. No significant difference between the diastolic blood pressure of standard and Aster tablets treated volunteer group was recorded. Conclusion: The mucilage was found to be non-toxic on A-431 and Vero cell lines. It was insoluble but swellable in cold and hot water. The results indicate that mucilage can form a three-dimensional network. The pH of the mucilage (6.82 ± 0.13) indicated that it might be non-irritant to the buccal cavity. The mucilage was found to be free from microbes. The release of drug was by Fickian diffusion. The in vivo buccal tablet acceptance was 80%. No significant difference between the diastolic blood pressure of standard and Aster tablets treated volunteer group was recorded. Other: However, to prove the potency of the polymer, in vivo bioavailability studies in human volunteers are needed along with chronic toxicity studies in suitable animal models.

scholarly journals PPM1G promotes the progression of hepatocellular carcinoma via phosphorylation regulation of alternative splicing protein SRSF3

2021 ◽  
Vol 12 (8) ◽  
Author(s):  
Dawei Chen ◽  
Zhenguo Zhao ◽  
Lu Chen ◽  
Qinghua Li ◽  
Jixue Zou ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Alternative Splicing ◽  
Protein Function ◽  
Vital Role ◽  
Normal Tissues ◽  
Mechanistic Analysis ◽  
Highly Correlated ◽  
Splicing Patterns

AbstractEmerging evidence has demonstrated that alternative splicing has a vital role in regulating protein function, but how alternative splicing factors can be regulated remains unclear. We showed that the PPM1G, a protein phosphatase, regulated the phosphorylation of SRSF3 in hepatocellular carcinoma (HCC) and contributed to the proliferation, invasion, and metastasis of HCC. PPM1G was highly expressed in HCC tissues compared to adjacent normal tissues, and higher levels of PPM1G were observed in adverse staged HCCs. The higher levels of PPM1G were highly correlated with poor prognosis, which was further validated in the TCGA cohort. The knockdown of PPM1G inhibited the cell growth and invasion of HCC cell lines. Further studies showed that the knockdown of PPM1G inhibited tumor growth in vivo. The mechanistic analysis showed that the PPM1G interacted with proteins related to alternative splicing, including SRSF3. Overexpression of PPM1G promoted the dephosphorylation of SRSF3 and changed the alternative splicing patterns of genes related to the cell cycle, the transcriptional regulation in HCC cells. In addition, we also demonstrated that the promoter of PPM1G was activated by multiple transcription factors and co-activators, including MYC/MAX and EP300, MED1, and ELF1. Our study highlighted the essential role of PPM1G in HCC and shed new light on unveiling the regulation of alternative splicing in malignant transformation.

scholarly journals Activation of MAT2A-RIP1 signaling axis reprograms monocytes in gastric cancer

2021 ◽  
Vol 9 (2) ◽  
pp. e001364
Author(s):  
Yan Zhang ◽  
Hui Yang ◽  
Jun Zhao ◽  
Ping Wan ◽  
Ye Hu ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Cell Metabolism ◽  
Vital Role ◽  
Methionine Metabolism ◽  
Promoter Regions ◽  
Normal Tissues ◽  
Methionine Cycle

BackgroundThe activation of tumor-associated macrophages (TAMs) facilitates the progression of gastric cancer (GC). Cell metabolism reprogramming has been shown to play a vital role in the polarization of TAMs. However, the role of methionine metabolism in function of TAMs remains to be explored.MethodsMonocytes/macrophages were isolated from peripheral blood, tumor tissues or normal tissues from healthy donors or patients with GC. The role of methionine metabolism in the activation of TAMs was evaluated with both in vivo analyses and in vitro experiments. Pharmacological inhibition of the methionine cycle and modulation of key metabolic genes was employed, where molecular and biological analyses were performed.ResultsTAMs have increased methionine cycle activity that are mainly attributed to elevated methionine adenosyltransferase II alpha (MAT2A) levels. MAT2A modulates the activation and maintenance of the phenotype of TAMs and mediates the upregulation of RIP1 by increasing the histone H3K4 methylation (H3K4me3) at its promoter regions.ConclusionsOur data cast light on a novel mechanism by which methionine metabolism regulates the anti-inflammatory functions of monocytes in GC. MAT2A might be a potential therapeutic target for cancer cells as well as TAMs in GC.

scholarly journals Hepatoprotective studies on methanolic extract fractions of Lindernia ciliata and development of qualitative analytical profile for the bioactive extract

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Praneetha Pallerla ◽  
Narsimha Reddy Yellu ◽  
Ravi Kumar Bobbala
Keyword(s):  
Methanolic Extract ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Liver Homogenate ◽  
Reducing Power ◽  
Hepatoprotective Activity ◽  
Total Phenolic ◽  
Effective Fraction

Abstract Background The objective of the study is to evaluate the hepatoprotective activity of methanolic extract fractions of Lindernia ciliata (LC) and development of qualitative analytical profile of the bioactive fraction using HPLC fingerprinting analysis. All the fractions of methanolic extract of Lindernia ciliata (LCME) are assessed for their total phenolic, flavonoid contents and in vitro antioxidant properties by using DPPH, superoxide, nitric oxide, hydroxyl radical scavenging activities and reducing power assay. Acute toxicity study was conducted for all the fractions and the two test doses 50 and 100 mg/kg were selected for the hepatoprotective study. Liver damage was induced in different groups of rats by administering 3 g/kg.b.w.p.o. paracetamol and the effect of fractions were tested for hepatoprotective potential by evaluating serum biochemical parameters and histology of liver of rats. The effective fraction was evaluated for its antihepatotoxic activity against D-Galactosamine (400 mg/kg b.w. i.p.) and in vivo antioxidant parameters viz., Glutathione (GSH), Melondialdehyde (MDA) and Catalase (CAT) levels are estimated using liver homogenate. Results Among all the fractions, butanone fraction of LCME, (BNF-LCME) has shown better hepatoprotective activity and hence it is selected to evaluate the antihepatotoxicity against D-GaIN. The activity of BNF-LCME is well supported in in vitro and in vivo antioxidant studies and may be attributed to flavonoidal, phenolic compounds present in the fraction. Hence, BNF-LCME was subjected to the development of qualitative analytical profile using HPLC finger printing analysis. Conclusions All the fractions of LCME exhibited significant hepatoprotective activity and BNF-LCME (50 mg/kg) was identified as the most effective fraction.

scholarly journals Research Advances on Health Effects of Edible Artemisia Species and Some Sesquiterpene Lactones Constituents

Foods ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 65
Author(s):  
Antoaneta Trendafilova ◽  
Laila M. Moujir ◽  
Pedro M. C. Sousa ◽  
Ana M. L. Seca
Keyword(s):  
Adverse Effects ◽  
Health Effects ◽  
Functional Foods ◽  
Sesquiterpene Lactones ◽  
Therapeutic Effects ◽  
Nutritional Properties ◽  
Food Industries ◽  
Food Applications ◽  
Artemisia Species

The genus Artemisia, often known collectively as “wormwood”, has aroused great interest in the scientific community, pharmaceutical and food industries, generating many studies on the most varied aspects of these plants. In this review, the most recent evidence on health effects of edible Artemisia species and some of its constituents are presented and discussed, based on studies published until 2020, available in the Scopus, Web of Sciences and PubMed databases, related to food applications, nutritional and sesquiterpene lactones composition, and their therapeutic effects supported by in vivo and clinical studies. The analysis of more than 300 selected articles highlights the beneficial effect on health and the high clinical relevance of several Artemisia species besides some sesquiterpene lactones constituents and their derivatives. From an integrated perspective, as it includes therapeutic and nutritional properties, without ignoring some adverse effects described in the literature, this review shows the great potential of Artemisia plants and some of their constituents as dietary supplements, functional foods and as the source of new, more efficient, and safe medicines. Despite all the benefits demonstrated, some gaps need to be filled, mainly related to the use of raw Artemisia extracts, such as its standardization and clinical trials on adverse effects and its health care efficacy.

scholarly journals Application of standards and models in body composition analysis

2015 ◽  
Vol 75 (2) ◽  
pp. 181-187 ◽  
Author(s):  
Manfred J. Müller ◽  
Wiebke Braun ◽  
Maryam Pourhassan ◽  
Corinna Geisler ◽  
Anja Bosy-Westphal
Keyword(s):  
Body Composition ◽  
Clinical Decision Making ◽  
Compartment Model ◽  
Clinical Decision ◽  
Whole Body ◽  
Composition Analysis ◽  
Body Composition Analysis ◽  
Physical Functions ◽  
Body Components

The aim of this review is to extend present concepts of body composition and to integrate it into physiology. In vivo body composition analysis (BCA) has a sound theoretical and methodological basis. Present methods used for BCA are reliable and valid. Individual data on body components, organs and tissues are included into different models, e.g. a 2-, 3-, 4- or multi-component model. Today the so-called 4-compartment model as well as whole body MRI (or computed tomography) scans are considered as gold standards of BCA. In practice the use of the appropriate method depends on the question of interest and the accuracy needed to address it. Body composition data are descriptive and used for normative analyses (e.g. generating normal values, centiles and cut offs). Advanced models of BCA go beyond description and normative approaches. The concept of functional body composition (FBC) takes into account the relationships between individual body components, organs and tissues and related metabolic and physical functions. FBC can be further extended to the model of healthy body composition (HBC) based on horizontal (i.e. structural) and vertical (e.g. metabolism and its neuroendocrine control) relationships between individual components as well as between component and body functions using mathematical modelling with a hierarchical multi-level multi-scale approach at the software level. HBC integrates into whole body systems of cardiovascular, respiratory, hepatic and renal functions. To conclude BCA is a prerequisite for detailed phenotyping of individuals providing a sound basis for in depth biomedical research and clinical decision making.

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