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  1. Article ; Online: Resveratrol as a Promising Nutraceutical: Implications in Gut Microbiota Modulation, Inflammatory Disorders, and Colorectal Cancer.

    Prakash, Vidhya / Bose, Chinchu / Sunilkumar, Damu / Cherian, Robin Mathew / Thomas, Shwetha Susan / Nair, Bipin G

    International journal of molecular sciences

    2024  Volume 25, Issue 6

    Abstract: Natural products have been a long-standing source for exploring health-beneficial components from time immemorial. Modern science has had a renewed interest in natural-products-based drug discovery. The quest for new potential secondary metabolites or ... ...

    Abstract Natural products have been a long-standing source for exploring health-beneficial components from time immemorial. Modern science has had a renewed interest in natural-products-based drug discovery. The quest for new potential secondary metabolites or exploring enhanced activities for existing molecules remains a pertinent topic for research. Resveratrol belongs to the stilbenoid polyphenols group that encompasses two phenol rings linked by ethylene bonds. Several plant species and foods, including grape skin and seeds, are the primary source of this compound. Resveratrol is known to possess potent anti-inflammatory, antiproliferative, and immunoregulatory properties. Among the notable bioactivities associated with resveratrol, its pivotal role in safeguarding the intestinal barrier is highlighted for its capacity to prevent intestinal inflammation and regulate the gut microbiome. A better understanding of how oxidative stress can be controlled using resveratrol and its capability to protect the intestinal barrier from a gut microbiome perspective can shed more light on associated physiological conditions. Additionally, resveratrol exhibits antitumor activity, proving its potential for cancer treatment and prevention. Moreover, cardioprotective, vasorelaxant, phytoestrogenic, and neuroprotective benefits have also been reported. The pharmaceutical industry continues to encounter difficulties administering resveratrol owing to its inadequate bioavailability and poor solubility, which must be addressed simultaneously. This report summarizes the currently available literature unveiling the pharmacological effects of resveratrol.
    MeSH term(s) Humans ; Resveratrol/pharmacology ; Resveratrol/therapeutic use ; Gastrointestinal Microbiome ; Polyphenols/pharmacology ; Dietary Supplements ; Colorectal Neoplasms/drug therapy
    Chemical Substances Resveratrol (Q369O8926L) ; Polyphenols
    Language English
    Publishing date 2024-03-16
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms25063370
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Synergistic Effects of Limosilactobacillus fermentum ASBT-2 with Oxyresveratrol Isolated from Coconut Shell Waste

    Prakash, Vidhya / Krishnan, Akshaya S / Ramesh, Reshma / Bose, Chinchu / Pillai, Girinath G. / Nair, Bipin G. / Pal, Sanjay

    Foods. 2021 Oct. 22, v. 10, no. 11

    2021  

    Abstract: Value-added phytochemicals from food by-products and waste materials have gained much interest and among them, dietary polyphenolic compounds with potential biological properties extend a promising sustainable approach. Oxyresveratrol (Oxy), a stilbenoid ...

    Abstract Value-added phytochemicals from food by-products and waste materials have gained much interest and among them, dietary polyphenolic compounds with potential biological properties extend a promising sustainable approach. Oxyresveratrol (Oxy), a stilbenoid polyphenol, possesses great therapeutic potential, though its pharmacokinetic issues need attention. A good source of oxyresveratrol was found in underutilized coconut shells and the synbiotic applications of the compound in combination with a potential probiotic isolate Limosilactobacillus fermentum ASBT-2 was investigated. The compound showed lower inhibitory effects on the strain with minimum inhibitory concentration (MIC) of 1000 µg/mL. Oxyresveratrol at sub-MIC concentrations (500 µg/mL and 250 µg/mL) enhanced the probiotic properties without exerting any inhibitory effects on the strain. The combination at sub- MIC concentration of the compound inhibited Salmonella enterica and in silico approaches were employed to elucidate the possible mode of action of oxy on the pathogen. Thus, the combination could target pathogens in the gut without exerting negative impacts on growth of beneficial strains. This approach could be a novel perspective to address the poor pharmacokinetic properties of the compound.
    Keywords Salmonella enterica ; coconuts ; computer simulation ; digestive system ; mechanism of action ; minimum inhibitory concentration ; pathogens ; pharmacokinetics ; phytochemicals ; polyphenols ; probiotics ; therapeutics ; value added
    Language English
    Dates of publication 2021-1022
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2704223-6
    ISSN 2304-8158
    ISSN 2304-8158
    DOI 10.3390/foods10112548
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: Synergistic Effects of

    Prakash, Vidhya / Krishnan, Akshaya S / Ramesh, Reshma / Bose, Chinchu / Pillai, Girinath G / Nair, Bipin G / Pal, Sanjay

    Foods (Basel, Switzerland)

    2021  Volume 10, Issue 11

    Abstract: Value-added phytochemicals from food by-products and waste materials have gained much interest and among them, dietary polyphenolic compounds with potential biological properties extend a promising sustainable approach. Oxyresveratrol (Oxy), a stilbenoid ...

    Abstract Value-added phytochemicals from food by-products and waste materials have gained much interest and among them, dietary polyphenolic compounds with potential biological properties extend a promising sustainable approach. Oxyresveratrol (Oxy), a stilbenoid polyphenol, possesses great therapeutic potential, though its pharmacokinetic issues need attention. A good source of oxyresveratrol was found in underutilized coconut shells and the synbiotic applications of the compound in combination with a potential probiotic isolate
    Language English
    Publishing date 2021-10-22
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2704223-6
    ISSN 2304-8158
    ISSN 2304-8158
    DOI 10.3390/foods10112548
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Plumbagin induces paraptosis in cancer cells by disrupting the sulfhydryl homeostasis and proteasomal function.

    Binoy, Anupama / Nedungadi, Divya / Katiyar, Neeraj / Bose, Chinchu / Shankarappa, Sahadev A / Nair, Bipin G / Mishra, Nandita

    Chemico-biological interactions

    2019  Volume 310, Page(s) 108733

    Abstract: Plumbagin (PLB) is an active secondary metabolite extracted from the roots of Plumbago rosea. In this study, we report that plumbagin effectively induces paraptosis by triggering extensive cytoplasmic vacuolation followed by cell death in triple negative ...

    Abstract Plumbagin (PLB) is an active secondary metabolite extracted from the roots of Plumbago rosea. In this study, we report that plumbagin effectively induces paraptosis by triggering extensive cytoplasmic vacuolation followed by cell death in triple negative breast cancer cells (MDA-MB-231), cervical cancer cells (HeLa) and non-small lung cancer cells (A549) but not in normal lung fibroblast cells (WI-38). The vacuoles originated from the dilation of the endoplasmic reticulum (ER) and were found to be empty. The cell death induced by plumbagin was neither apoptotic nor autophagic. Plumbagin induced ER stress mainly by inhibiting the chymotrypsin-like activity of 26S proteasome as also evident from the accumulation of polyubiquitinated proteins. The vacuolation and cell death were found to be independent of reactive oxygen species generation but was effectively inhibited by thiol antioxidant suggesting that plumbagin could modify the sulfur homeostasis in the cellular milieu. Plumbagin also resulted in a decrease in mitochondrial membrane potential eventually decreasing the ATP production. This is the first study to show that Plumbagin induces paraptosis through proteasome inhibition and disruption of sulfhydryl homeostasis and thus further opens up the lead molecule to potential therapeutic strategies for apoptosis-resistant cancers.
    MeSH term(s) Cell Death/drug effects ; Cell Line ; Cell Line, Tumor ; Endoplasmic Reticulum Stress/drug effects ; Homeostasis ; Humans ; Membrane Potential, Mitochondrial/drug effects ; Naphthoquinones/pharmacology ; Naphthoquinones/therapeutic use ; Neoplasms/drug therapy ; Neoplasms/pathology ; Proteasome Inhibitors/pharmacology ; Sulfhydryl Compounds/metabolism ; Vacuoles/metabolism
    Chemical Substances Naphthoquinones ; Proteasome Inhibitors ; Sulfhydryl Compounds ; plumbagin (YAS4TBQ4OQ)
    Language English
    Publishing date 2019-07-02
    Publishing country Ireland
    Document type Journal Article
    ZDB-ID 218799-1
    ISSN 1872-7786 ; 0009-2797
    ISSN (online) 1872-7786
    ISSN 0009-2797
    DOI 10.1016/j.cbi.2019.108733
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Corrigendum to "Plumbagin induces paraptosis in cancer cells by disrupting the sulfhydryl homeostasis and proteasomal function" [Chem. Biol. Interact. 310 (2019) 108733].

    Binoy, Anupama / Nedungadi, Divya / Katiyar, Neeraj / Bose, Chinchu / Shankarappa, Sahadev / Nair, Bipin G / Mishra, Nandita

    Chemico-biological interactions

    2019  Volume 311, Page(s) 108791

    Language English
    Publishing date 2019-08-20
    Publishing country Ireland
    Document type Published Erratum
    ZDB-ID 218799-1
    ISSN 1872-7786 ; 0009-2797
    ISSN (online) 1872-7786
    ISSN 0009-2797
    DOI 10.1016/j.cbi.2019.108791
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Anacardic acid induces apoptosis-like cell death in the rice blast fungus Magnaporthe oryzae.

    Muzaffar, Suhail / Bose, Chinchu / Banerji, Ashok / Nair, Bipin G / Chattoo, Bharat B

    Applied microbiology and biotechnology

    2016  Volume 100, Issue 1, Page(s) 323–335

    Abstract: Anacardic acid (6-pentadecylsalicylic acid), extracted from cashew nut shell liquid, is a natural phenolic lipid well known for its strong antibacterial, antioxidant, and anticancer activities. Its effect has been well studied in bacterial and mammalian ... ...

    Abstract Anacardic acid (6-pentadecylsalicylic acid), extracted from cashew nut shell liquid, is a natural phenolic lipid well known for its strong antibacterial, antioxidant, and anticancer activities. Its effect has been well studied in bacterial and mammalian systems but remains largely unexplored in fungi. The present study identifies antifungal, cytotoxic, and antioxidant activities of anacardic acid in the rice blast fungus Magnaporthe oryzae. It was found that anacardic acid causes inhibition of conidial germination and mycelial growth in this ascomycetous fungus. Phosphatidylserine externalization, chromatin condensation, DNA degradation, and loss of mitochondrial membrane potential suggest that growth inhibition of fungus is mainly caused by apoptosis-like cell death. Broad-spectrum caspase inhibitor Z-VAD-FMK treatment indicated that anacardic acid induces caspase-independent apoptosis in M. oryzae. Expression of a predicted ortholog of apoptosis-inducing factor (AIF) was upregulated during the process of apoptosis, suggesting the possibility of mitochondria dependent apoptosis via activation of apoptosis-inducing factor. Anacardic acid treatment leads to decrease in reactive oxygen species rather than increase in reactive oxygen species (ROS) accumulation normally observed during apoptosis, confirming the antioxidant properties of anacardic acid as suggested by earlier reports. Our study also shows that anacardic acid renders the fungus highly sensitive to DNA damaging agents like ethyl methanesulfonate (EMS). Treatment of rice leaves with anacardic acid prevents M. oryzae from infecting the plant without affecting the leaf, suggesting that anacardic acid can be an effective antifungal agent.
    MeSH term(s) Anacardic Acids/isolation & purification ; Anacardic Acids/toxicity ; Anacardium/chemistry ; Antifungal Agents/isolation & purification ; Antifungal Agents/toxicity ; Apoptosis ; Cell Death ; Magnaporthe/drug effects ; Magnaporthe/growth & development ; Magnaporthe/physiology ; Mycelium/growth & development ; Oryza/microbiology ; Plant Diseases/microbiology ; Plant Diseases/prevention & control ; Plant Leaves/microbiology
    Chemical Substances Anacardic Acids ; Antifungal Agents ; anacardic acid (18654-18-7)
    Language English
    Publishing date 2016-01
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 392453-1
    ISSN 1432-0614 ; 0171-1741 ; 0175-7598
    ISSN (online) 1432-0614
    ISSN 0171-1741 ; 0175-7598
    DOI 10.1007/s00253-015-6915-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Nitric Oxide and ERK mediates regulation of cellular processes by Ecdysterone.

    Omanakuttan, Athira / Bose, Chinchu / Pandurangan, Nanjan / Kumar, Geetha B / Banerji, Asoke / Nair, Bipin G

    Experimental cell research

    2016  Volume 346, Issue 2, Page(s) 167–175

    Abstract: The complex process of wound healing is a major problem associated with diabetes, venous or arterial disease, old age and infection. A wide range of pharmacological effects including anabolic, anti-diabetic and hepato-protective activities have been ... ...

    Abstract The complex process of wound healing is a major problem associated with diabetes, venous or arterial disease, old age and infection. A wide range of pharmacological effects including anabolic, anti-diabetic and hepato-protective activities have been attributed to Ecdysterone. In earlier studies, Ecdysterone has been shown to modulate eNOS and iNOS expression in diabetic animals and activate osteogenic differentiation through the Extracellular-signal-Regulated Kinase (ERK) pathway in periodontal ligament stem cells. However, in the wound healing process, Ecdysterone has only been shown to enhance granulation tissue formation in rabbits. There have been no studies to date, which elucidate the molecular mechanism underlying the complex cellular process involved in wound healing. The present study, demonstrates a novel interaction between the phytosteroid Ecdysterone and Nitric Oxide Synthase (NOS), in an Epidermal Growth Factor Receptor (EGFR)-dependent manner, thereby promoting cell proliferation, cell spreading and cell migration. These observations were further supported by the 4-amino-5-methylamino- 2' ,7' -difluorofluorescein diacetate (DAF FM) fluorescence assay which indicated that Ecdysterone activates NOS resulting in increased Nitric Oxide (NO) production. Additionally, studies with inhibitors of both the EGFR and ERK, demonstrated that Ecdysterone activates NOS through modulation of EGFR and ERK. These results clearly demonstrate, for the first time, that Ecdysterone enhances Nitric Oxide production and modulates complex cellular processes by activating ERK1/2 through the EGF pathway.
    MeSH term(s) 3T3-L1 Cells ; Aizoaceae/chemistry ; Animals ; Cell Migration Assays ; Cell Movement/drug effects ; Cell Proliferation/drug effects ; Ecdysterone/chemistry ; Ecdysterone/isolation & purification ; Ecdysterone/pharmacology ; Enzyme Activation/drug effects ; Extracellular Signal-Regulated MAP Kinases/metabolism ; Flavonoids/pharmacology ; Mice ; Nitric Oxide/metabolism ; Quinazolines/pharmacology ; Receptor, Epidermal Growth Factor/metabolism ; Signal Transduction/drug effects ; Tyrphostins/pharmacology
    Chemical Substances Flavonoids ; Quinazolines ; Tyrphostins ; tyrphostin AG 1478 (170449-18-0) ; Nitric Oxide (31C4KY9ESH) ; Ecdysterone (5289-74-7) ; Receptor, Epidermal Growth Factor (EC 2.7.10.1) ; Extracellular Signal-Regulated MAP Kinases (EC 2.7.11.24) ; 2-(2-amino-3-methoxyphenyl)-4H-1-benzopyran-4-one (SJE1IO5E3I)
    Language English
    Publishing date 2016-07-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1493-x
    ISSN 1090-2422 ; 0014-4827
    ISSN (online) 1090-2422
    ISSN 0014-4827
    DOI 10.1016/j.yexcr.2016.07.019
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  8. Article: Synthesis and antioxygenic activities of seabuckthorn flavone-3-ols and analogs

    Pandurangan, N / Bose, Chinchu / Banerji, A

    Bioorganic & medicinal chemistry letters. 2011 Sept. 15, v. 21, no. 18

    2011  

    Abstract: A practical synthesis of polyhydroxy- and regiospecifically methylated flavone-3-ols which are components of commercial ‘seabuckthorn flavone’ has been achieved by modified Algar–Flynn–Oyamada method. Antioxidant activities of seabuckthorn extracts, ... ...

    Abstract A practical synthesis of polyhydroxy- and regiospecifically methylated flavone-3-ols which are components of commercial ‘seabuckthorn flavone’ has been achieved by modified Algar–Flynn–Oyamada method. Antioxidant activities of seabuckthorn extracts, isolated products and a number of flavone-3-ols have been determined. Structure–activity relationships have been discussed. Amongst the compounds tested, gallic acid, which is also present in seabuckthorn, was found to be the most effective antioxidant and radioprotectant.
    Keywords antioxidant activity ; antioxidants ; gallic acid ; structure-activity relationships
    Language English
    Dates of publication 2011-0915
    Size p. 5328-5330.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 1063195-1
    ISSN 1464-3405 ; 0960-894X
    ISSN (online) 1464-3405
    ISSN 0960-894X
    DOI 10.1016/j.bmcl.2011.07.008
    Database NAL-Catalogue (AGRICOLA)

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  9. Article ; Online: Synthesis and antioxygenic activities of seabuckthorn flavone-3-ols and analogs.

    Pandurangan, N / Bose, Chinchu / Banerji, A

    Bioorganic & medicinal chemistry letters

    2011  Volume 21, Issue 18, Page(s) 5328–5330

    Abstract: A practical synthesis of polyhydroxy- and regiospecifically methylated flavone-3-ols which are components of commercial 'seabuckthorn flavone' has been achieved by modified Algar-Flynn-Oyamada method. Antioxidant activities of seabuckthorn extracts, ... ...

    Abstract A practical synthesis of polyhydroxy- and regiospecifically methylated flavone-3-ols which are components of commercial 'seabuckthorn flavone' has been achieved by modified Algar-Flynn-Oyamada method. Antioxidant activities of seabuckthorn extracts, isolated products and a number of flavone-3-ols have been determined. Structure-activity relationships have been discussed. Amongst the compounds tested, gallic acid, which is also present in seabuckthorn, was found to be the most effective antioxidant and radioprotectant.
    MeSH term(s) Antioxidants/chemical synthesis ; Antioxidants/chemistry ; Antioxidants/isolation & purification ; Chemistry Techniques, Synthetic ; Flavones/chemical synthesis ; Flavones/chemistry ; Flavones/isolation & purification ; Molecular Structure ; Oxygen/chemistry ; Stereoisomerism ; Structure-Activity Relationship
    Chemical Substances Antioxidants ; Flavones ; Oxygen (S88TT14065)
    Language English
    Publishing date 2011-09-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 1063195-1
    ISSN 1464-3405 ; 0960-894X
    ISSN (online) 1464-3405
    ISSN 0960-894X
    DOI 10.1016/j.bmcl.2011.07.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Phlorotannins from Padina tetrastromatica: structural characterisation and functional studies

    Nair, Divya / Anil, Abhishek Nair / Balasubramanian, Akshaya / Bose, Chinchu / Ganesh, Shankar / Iyer, Akshay / Nair, Bipin Gopalakrishnan / Nair, Sudarslal Sadasivan / Pai, Jayashree Gopalakrishna / Pillai, Prasanth / Vanuopadath, Muralidharan / Vikraman, Vijesh

    Journal of applied phycology. 2019 Oct., v. 31, no. 5

    2019  

    Abstract: In this study, LC–MS/MS-based structural characterisation of phlorotannins from Padina tetrastromatica, a marine brown macroalga collected from South-West coastal region of Kerala, and its bioactivities are presented. The tandem mass spectrometric data ... ...

    Abstract In this study, LC–MS/MS-based structural characterisation of phlorotannins from Padina tetrastromatica, a marine brown macroalga collected from South-West coastal region of Kerala, and its bioactivities are presented. The tandem mass spectrometric data revealed a series of phlorotannins with degree of polymerisation ranging from 2 to 18. The characteristic neutral loss of tandem mass spectra further confirmed that these molecules belong to fucophlorethol class of phlorotannins. DPPH assay of the HPLC-purified, phlorotannin-enriched fraction possesses significant free radical-scavenging activity. Cell viability assay indicated that phlorotannin concentration ranging from 1.5 to 50.0 μg mL−1 is non-toxic to THP-1 cell lines. Anti-inflammatory assay performed through gelatin zymography confirmed that phlorotannins ameliorated high-glucose-induced pro-MMP-9 expression in a dose-dependent manner whereas the level of pro-MMP-2 remains unaltered. The antimicrobial assays carried out using both the crude and HPLC-purified phlorotannin fraction showed its anti-MRSA potential.
    Keywords 2,2-diphenyl-1-picrylhydrazyl ; antioxidant activity ; cell lines ; cell viability ; coasts ; dose response ; free radical scavengers ; gelatin ; liquid chromatography ; macroalgae ; mass spectrometry ; Padina ; polymerization ; viability assays ; India
    Language English
    Dates of publication 2019-10
    Size p. 3131-3141.
    Publishing place Springer Netherlands
    Document type Article
    ZDB-ID 1002324-0
    ISSN 1573-5176 ; 0921-8971
    ISSN (online) 1573-5176
    ISSN 0921-8971
    DOI 10.1007/s10811-019-01792-y
    Database NAL-Catalogue (AGRICOLA)

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