scholarly journals Antioxidative, Anti-Inflammatory, and Anticancer Effects of Purified Flavonol Glycosides and Aglycones in Green Tea

Antioxidants ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 278 ◽  
Author(s):  
Chan-Su Rha ◽  
Hyun Woo Jeong ◽  
Saitbyul Park ◽  
Siyoung Lee ◽  
Young Sung Jung ◽  
...  
Keyword(s):  
Cell Line ◽  
Green Tea ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Cancer Cell Line ◽  
Flavonol Glycosides ◽  
Dependent Manner ◽  
Anticancer Effects ◽  
Anti Inflammatory

(1) Background: Extensive research has focused on flavan-3-ols, but information about the bioactivities of green tea flavonols is limited. (2) Methods: In this study, we investigated the antioxidative, anti-inflammatory, and anticancer effects of flavonol glycosides and aglycones from green tea using in vitro cell models. The fractions rich in flavonol glycoside (FLG) and flavonol aglycone (FLA) were obtained from green tea extract after treatment with tannase and cellulase, respectively. (3) Results: FLG and FLA contained 16 and 13 derivatives, respectively, including apigenin, kaempferol, myricetin, and quercetin, determined by mass spectrometry. FLA exhibited higher radical-scavenging activity than that of FLG. FLG and FLA attenuated the levels of intracellular oxidative stress in neuron-like PC-12 cells. The treatment of RAW 264.7 murine macrophages with FLG and FLA significantly reduced the mRNA expression of inflammation-related genes in a dose-dependent manner. Furthermore, FLG and FLA treatments decreased the viability of the colon adenoma cell line DLD-1 and breast cancer cell line E0771. Moreover, the treatment with FLG or FLA combined with paclitaxel had synergistic anticancer effects on the DLD-1 cell line. (4) Conclusions: Flavonols from green tea exerted beneficial effects on health and may be superior to flavan-3-ols.

scholarly journals In Vitro Toxicity, Antioxidant, Anti-Inflammatory, and Antidiabetic Potential of Sphaerostephanos unitus (L.) Holttum

Antibiotics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 333 ◽  
Author(s):  
Marimuthu Alias Antonisamy Johnson ◽  
C. Xavier Madona ◽  
Ray S. Almeida ◽  
Natália Martins ◽  
Henrique D. M. Coutinho
Keyword(s):  
Petroleum Ether ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
In Vitro Toxicity ◽  
Dependent Manner ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Anti Inflammatory ◽  
Dpph Radical Scavenging

Pteridophytes have been widely used in several systems of medicine. Several reports have increasingly assessed their bioactive effects, but for Sphaerostephanos unitus (L.) Holttum, only its antibacterial potential has been assessed. In this sense, the present study was carried out to reveal the phytochemical profile and to determine the toxicity, antioxidant, antidiabetic, and anti-inflammatory potential of S. unitus. Brine shrimp lethality, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, phosphomolybdenum assay, superoxide radical scavenging activity, 2,2-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) assay (ABTS), and in vitro α-amylase inhibitory and membrane stabilization assays were applied. S. unitus extract toxicity showed variable mortality percentages, with LC50 values ranging from 4 to 30 mg/mL. DPPH radical scavenging effects of S. unitus extracts were as follows: methanol > acetone > petroleum ether > chloroform. S. unitus acetone extract displayed the strongest phosphomolybdenum reduction (10 ± 2 mg Ascorbic Acid Equivalent/g). The studied extracts also revealed efficient, superoxide scavenging effects in a dose-dependent manner. In S. unitus, the highest ABTS radical scavenging rate was observed in the chloroform extract (3000 ± 40 µmol/g). The S. unitus anti-inflammatory effect was as follows: petroleum ether > chloroform > methanol > acetone. In S. unitus extract, the highest percentage of α-amylase activity (80%) was observed for the petroleum ether extract (25 µg/mL). Faced with these findings, further studies should be performed to isolate and identify the S. unitus compounds responsible for their antioxidant, antidiabetic and anti-inflammatory effects.

scholarly journals Monocyte Infiltration and Differentiation in 3D Multicellular Spheroid Cancer Models

Pathogens ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 969
Author(s):  
Natasha Helleberg Madsen ◽  
Boye Schnack Nielsen ◽  
Son Ly Nhat ◽  
Søren Skov ◽  
Monika Gad ◽  
...  
Keyword(s):  
Cell Line ◽  
Cancer Cell ◽  
Cancer Cell Line ◽  
Dependent Manner ◽  
Multicellular Spheroid ◽  
Tumor Associated Macrophages ◽  
Cancer Models ◽  
Ht 29 ◽  
Mcf 7

Tumor-associated macrophages often correlate with tumor progression, and therapies targeting immune cells in tumors have emerged as promising treatments. To select effective therapies, we established an in vitro 3D multicellular spheroid model including cancer cells, fibroblasts, and monocytes. We analyzed monocyte infiltration and differentiation in spheroids generated from fibroblasts and either of the cancer cell lines MCF-7, HT-29, PANC-1, or MIA PaCa-2. Monocytes rapidly infiltrated spheroids and differentiated into mature macrophages with diverse phenotypes in a cancer cell line-dependent manner. MIA PaCa-2 spheroids polarized infiltrating monocytes to M2-like macrophages with high CD206 and CD14 expression, whereas monocytes polarized by MCF-7 spheroids displayed an M1-like phenotype. Monocytes in HT-29 and PANC-1 primarily obtained an M2-like phenotype but also showed upregulation of M1 markers. Analysis of the secretion of 43 soluble factors demonstrated that the cytokine profile between spheroid cultures differed considerably depending on the cancer cell line. Secretion of most of the cytokines increased upon the addition of monocytes resulting in a more inflammatory and pro-tumorigenic environment. These multicellular spheroids can be used to recapitulate the tumor microenvironment and the phenotype of tumor-associated macrophages in vitro and provide more realistic 3D cancer models allowing the in vitro screening of immunotherapeutic compounds.

Strong antihemolytic and antioxidant properties of aqueous extract from Algerian Hammada elegans (Bge.) Botsch (Chenopodiaceae)

2021 ◽  
Vol 17 ◽  
Author(s):  
Brahim Asseli ◽  
Reguia Mahfoudi ◽  
Amar Djeridane ◽  
Mohamed Yousfi
Keyword(s):  
Free Radical ◽  
Aqueous Extract ◽  
Radical Scavenging Activity ◽  
Condensed Tannin ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Dependent Manner ◽  
Vitro Assay

Background: Research on medicinal plant antioxidants has emerged as a potential therapeutic to prevent free radical generated damage in the human body. Hammada elegans Botsch (popularly known as “Ajram”) is a xerophytic plant widely found in Laghouat region, but there are only a few reports about the biological or chemical properties of these species. Hence, the aim of this study is to investigate the antioxidant and the antihemolytic activities of hexanic, acetonic, methanolic and aqueous extracts of aerial parts of Algerian Hammada elegans Botsch by employing different in vitro assay systems. Methods: The total phenolic content, the flavonoid content and the condensed tannin amount were analyzed using Folin-Ciocalteu, aluminum chloride and vanillin assays, respectively. The in vitro antioxidant capacity of extracts was assessed by CUPRAC, iron chelating, ABTS•+and antihemolytic assays, and was expressed as EC50 values. Results: Among the analyzed extracts, the aqueous extract had the highest phenolic, flavonoid and tannin contents. Also, this extract displayed the highest antioxidant capacities compared to the other extracts and standards. Its EC50 value for ABTS radical-scavenging activity was 0.265 ± 0.003 mg/L. Moreover, this extract showed high iron (II) chelating ability (EC50 = 0.958 ± 0.001 mg/L), and good antioxidant activity in the cupric ion reducing activity (CUPRAC) in a concentration dependent manner (EC50 were 0.709 ± 0.002 mg/L). Additionally, this extract had the best antihemolytic activity against AAPH-induced hemolysis (EC50=0.090 ± 0.004 mg/L). Conclusion: Our study revealed that the aqueous extract of Hammada elegans Botsch, is a potential source of antioxidants which possess a high protective effect of membrane against free radical.

IN-SILICO AND IN VITRO ASSESSMENT OF SYNTHESIZED DIAZENYLSULFONAMIDES AS APOPTOSIS INDUCERS AND RADICAL SCAVENGERS

INDIAN DRUGS ◽  
2020 ◽  
Vol 57 (06) ◽  
pp. 49-59
Author(s):  
Priyambada Kshiroda Nandini Sarangi ◽  
Jyotirmaya Sahoo ◽  
Chita Ranjan Sahoo ◽  
Sudhir Kumar Paidesetty ◽  
Guru Prasad Mohanta
Keyword(s):  
Cell Line ◽  
Cancer Cell ◽  
Radical Scavenging ◽  
Cancer Cell Line ◽  
Scavenging Effect ◽  
Ic50 Values ◽  
Radical Scavenging Effect ◽  
The Individual ◽  
Mcf 7

A series of eight quinoline-thiazole hybrid-bearing diazenylsulfonamides, 4a-4h, were synthesized and characterized by UV-Vis, FT/IR, 1H NMR and lC-MS. These compounds were formed when two prepared intermediate precursors of Schiff-base compounds, (E)-N-((2-chloroquinolin-3-yl)methylene)-4phenylthiazol-2-amine (3a) and (E)-N-((2-chloroquinolin-3-yl)methylene)-4-chlorophenylthiazol-2-amine (3b) were converted to the corresponding diazenyl compounds 4a-4h by treating and coupling with the individual diazonium salts of sulfa-drugs. The results of in vitro cytotoxic activity of the synthesized compounds in two cancer cell lines MCF 7 (human breast cancer cell line) and K562 (myelogenousleukemia cell line) have shown the IC50 values as given: 4b against MCF 7 19.52 and against K562 20.55µM; 4d against MCF 7 15.96 and against K562 13.05µM. Moreover, the compound 4-(((Z)-(2-chloroquinolin-3yl)(4-phenylthiazol-2-ylimino)methyl)diazenyl)benzenesulfonic acid (4d) induced maximum percentage of apoptosis. Furthermore, the in vitro antioxidant activity study revealed that among all the synthesized compounds, compound 4d has an excellent radical scavenging effect. Molecular docking was additionally performed to investigate the binding affinity of H-bonding interaction of synthesized compounds with a targeted enzyme and to compare it with the anticancer drugs, dasatinib, bosutinib and dacarbazine.

Evaluation of Anti-oxidant and Anti-pyretic activity of fruits of Garcinia pedunculata

2021 ◽  
pp. 2635-2638
Author(s):  
Mrinmoy Basak ◽  
Moksood Ahmed Laskar ◽  
Priyanka Goswami
Keyword(s):  
Methanol Extract ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Traditional Use ◽  
Synthetic Drugs ◽  
Long Time ◽  
Anti Oxidant ◽  
Anti Inflammatory ◽  
Dpph Radical Scavenging

Most of the synthetic drugs used at present as analgesic and anti-inflammatory agents cause many side effects and toxic effects. Many medicines of plant origin with analgesic and anti-inflammatory activity have been used since long time without adverse effects. The purpose of the study was to explore the anti-pyretic and anti-oxidant activity of fruits of Garcinia pedunculata. The fruit of G. pedunculata was collected from Shillong, Meghalaya and extraction is done by using methanol as a solvent. The methanol extract shows the presence of carbohydrate, glycoside, alkaloids, phenol and flavonoids. Acute anti-pyretic activity for the extract was investigated in pyrexia rat. Temperature level was determined after 1hours, 4 hours, 8 hours and 12 hours after giving the extract dose of 100mg/kg and 200mg/kg body weight, and it was found to produce a significant reduce in fever. DPPH radical scavenging activity (In-vitro anti-oxidant activity of G. pedunculata) of methanolic extract shows 38.31 as IC50 (µg/ml) whereas Ascorbic acid as standard in the same concentration shows 34.81 IC50 (µg/ml). The obtained result justified the traditional use of G. pedunculata as anti-pyretic and antioxidant purpose.

scholarly journals Antioxidant and Anti-Inflammatory Activities of Six Flavonoids from Smilax glabra Roxb

Molecules ◽  
2020 ◽  
Vol 25 (22) ◽  
pp. 5295
Author(s):  
Xinyu Zhao ◽  
Ruyi Chen ◽  
Yueyue Shi ◽  
Xiaoxi Zhang ◽  
Chongmei Tian ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Raw264.7 Cells ◽  
Enzyme Linked Immunosorbent Assay ◽  
Preparative Hplc ◽  
Antioxidant Power ◽  
Ferric Reducing Antioxidant Power ◽  
Anti Inflammatory

This study aimed to isolate, prepare and identify the main flavonoids from a standardized Smilax glabra flavonoids extract (SGF) using preparative HPLC, MS, 1H NMR and 13C NMR, determine the contents of these flavonoids using UPLC, then compare their pharmacological activities in vitro. We obtained six flavonoids from SGF: astilbin (18.10%), neoastilbin (11.04%), isoastilbin (5.03%), neoisoastilbin (4.09%), engeletin (2.58%) and (−)-epicatechin (1.77%). The antioxidant activity of six flavonoids were evaluated by determining the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and 2,2′-Azinobis (3-ethylbenzothiazoline-6-sulphonic acid) diammonium salt (ABTS+) radical scavenging activity and ferric reducing antioxidant power (FRAP). In addition, the anti-inflammatory activity of six flavonoids were evaluated by determining the production of cytokines (IL-1β, IL-6), nitric oxide (NO) using enzyme linked immunosorbent assay and the NF-κB p65 expression using Western blotting in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. The results showed that (−)-epicatechin, astilbin, neoastilbin, isoastilbin and neoisoastilbin had strong antioxidant activities, not only in DPPH and ABTS+ radicals scavenging capacities, but in FRAP system. Furthermore, all the six flavonoids could significantly inhibit the secretion of IL-1β, IL-6, NO (p < 0.01) and the protein expression of NF-κB p-p65 (p < 0.01) in LPS-stimulated RAW264.7 cells. This study preliminarily verified the antioxidant and anti-inflammatory activities of six flavonoids in S. glabra.

scholarly journals In Vitro Antioxidant Activity of Dibenz[b,f]azepine and its Analogues

2008 ◽  
Vol 5 (s2) ◽  
pp. 1123-1132 ◽  
Author(s):  
H. Vijay Kumar ◽  
C. R. Gnanendra ◽  
Nagaraja Naik ◽  
D. Channe Gowda
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
In Vitro Models ◽  
Antioxidant Compounds ◽  
Dependent Manner ◽  
Concentration Dependent Manner

Dibenz[b,f]azepine and its five derivatives bearing different functional groups were synthesized by known methods. The compounds thus synthesized were evaluated for antioxidant potential through different in vitro models such as (DPPH) free radical scavenging activity,ß-carotene-linoleic acid model system, reducing power assay and phosphomolybdenum method. Under our experimental condition among the synthesized compounds dibenz[b,f]azepine (a) and 10-methoxy-5H-dibenz[b,f]azepine (d) exhibited potent antioxidant activity in concentration dependent manner in all the above four methods. Butylated hydroxyl anisole (BHA) and ascorbic acid (AA) were used as the reference antioxidant compounds. The most active compounds like dibenz[b,f]azepine and its methoxy group substituent have shown more promising antioxidant and radical scavengers compared to the standards like BHA and ascorbic acid. It is conceivable from the studies that the tricyclic amines,i.e. dibenz[b, f]azepine and some of its derivatives are effective in their antioxidant activity properties.

scholarly journals In vitro Cancer Cell Growth Inhibition and Antioxidant Activity of Bombax ceiba (Bombacaceae) Flower Extracts

2014 ◽  
Vol 9 (5) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Rosa Tundis ◽  
Khaled Rashed ◽  
Ataa Said ◽  
Francesco Menichini ◽  
Monica R. Loizzo
Keyword(s):  
Cancer Cell ◽  
Antiproliferative Activity ◽  
Human Cancer ◽  
Radical Scavenging Activity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Dependent Manner ◽  
Bleaching Test ◽  
Β Carotene

The flowers of Bombax ceiba were investigated for their chemical composition, antioxidant effects and antiproliferative activity against seven human cancer cell lines. The antiproliferative responses of diethyl ether (DE) and light petroleum (PE) extracts were evaluated by sulforhodamine B (SRB) assay against MCF-7, HeLa, COR-L23, C32, A375, ACHN, and LNCaP cells in comparison with a human normal cell line, 142BR. Moreover, extracts were characterized by GC-MS analysis and tested for their antioxidant properties by different in vitro systems, namely DPPH, Fe-chelating activity and β-carotene bleaching test. Both PE and DE extracts showed the highest antiproliferative activity against human renal adenocarcinoma (ACHN) in a concentration-dependent manner. PE extract showed the highest radical scavenging activity against the DPPH radical, while DE extract was more active in the β-carotene bleaching test. The presence of β-sitosterol and some fatty acids may contribute to the bioactivity of B. ceiba flower extracts.

scholarly journals IN VITRO ANTIOXIDANT AND ANTICANCER ACTIVITY OF ULVA LACTUCA L.USING MOLT-3 CELL LINE

2019 ◽  
pp. 75-78 ◽  
Author(s):  
CHIDAMBARARAJAN P ◽  
KEERTHANA V ◽  
PRIYADHARSHINI K, ◽  
SAKTHIVEL B
Keyword(s):  
Anticancer Activity ◽  
Cell Line ◽  
Radical Scavenging ◽  
Cancer Cell Line ◽  
Ethanol Extract ◽  
Maximum Growth ◽  
Ulva Lactuca ◽  
Cell Proliferation Inhibition ◽  
Free Radical Scavenging Assay

Objective: The aim of the present investigation was to determine the in vitro antioxidant and anticancer activity of the ethanol extract of Ulva lactuca L. Methods: The present study was to investigate the antioxidant and anticancer activity of U. lactuca L. The extract of U. lactuca L. was extracted by ethanol and subject to analysis. An in vitro antioxidant activity of the ethanol extract of U. lactuca L. was performed by 1, 1-diphenyl-2-picrylhydrazyl free radical scavenging assay. Simultaneously anticancer activity was also performed using blood cancer (MOLT-3) cell line, and the species showed a strong selective cell proliferation inhibition of the cancer cell line. Results: The scavenging activity was measured and determined to be 78.5%. This might be due to high polyphenolic compounds and flavonoid contents of the extract, which showed maximum growth inhibition of 74.4%. Conclusion: Thus, the study concludes that the constituents of seaweeds can act as potent in treating various diseases and can be used as an alternative for therapeutic treatment.

scholarly journals Phytochemical Profile, Free Radical Scavenging and Anti-Inflammatory Properties of Acalypha Indica Root Extract: Evidence from In Vitro and In Vivo Studies

Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6251
Author(s):  
Ravi Sahukari ◽  
Jyothi Punabaka ◽  
Shanmugam Bhasha ◽  
Venkata Subbaiah Ganjikunta ◽  
Shanmugam Kondeti Ramudu ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
In Vivo Studies ◽  
Root Extract ◽  
Dependent Manner ◽  
Anti Inflammatory ◽  
Acalypha Indica

In our in vitro and in vivo studies, we used Acalypha indica root methanolic extract (AIRME), and investigated their free radical scavenging/antioxidant and anti-inflammatory properties. Primarily, phytochemical analysis showed rich content of phenols (70.92 mg of gallic acid/g) and flavonoids (16.01 mg of rutin/g) in AIRME. We then performed HR-LC-MS and GC-MS analyses, and identified 101 and 14 phytochemical compounds, respectively. Among them, ramipril glucuronide (1.563%), antimycin A (1.324%), swietenine (1.134%), quinone (1.152%), oxprenolol (1.118%), choline (0.847%), bumetanide (0.847%) and fenofibrate (0.711%) are the predominant phytomolecules. Evidence from in vitro studies revealed that AIRME scavenges DPPH and hydroxyl radicals in a concentration dependent manner (10–50 μg/mL). Similarly, hydrogen peroxide and lipid peroxidation were also remarkably inhibited by AIRME as concentration increases (20–100 μg/mL). In vitro antioxidant activity of AIRME was comparable to ascorbic acid treatment. For in vivo studies, carrageenan (1%, sub-plantar) was injected to rats to induce localized inflammation. Acute inflammation was represented by paw-edema, and significantly elevated (p < 0.05) WBC, platelets and C-reactive protein (CRP). However, AIRME pretreatment (150/300 mg/kg bodyweight) significantly (p < 0.05) decreased edema volume. This was accompanied by a significant (p < 0.05) reduction of WBC, platelets and CRP with both doses of AIRME. The decreased activities of superoxide dismutase, catalase, glutathione reductase and glutathione peroxidase in paw tissue were restored (p < 0.05 / p < 0.01) with AIRME in a dose-dependent manner. Furthermore, AIRME attenuated carrageenan-induced neutrophil infiltrations and vascular dilation in paw tissue. For the first time, our findings demonstrated the potent antioxidant and anti-inflammatory properties of AIRME, which could be considered to develop novel anti-inflammatory drugs.

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