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Thiyagarajan G, Muthukumaran P, Prabhu D, Balasubramanyam M, Baddireddi LS. Syzygium cumini ameliorates high fat diet induced glucose intolerance, insulin resistance, weight gain, hepatic injury and nephrotoxicity through modulation of PTP1B and PPARγ signaling. Environ Toxicol 2024; 39:1086-1098. [PMID: 37815491 DOI: 10.1002/tox.23989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/04/2023] [Accepted: 09/21/2023] [Indexed: 10/11/2023]
Abstract
Metabolic disorders are majorly associated with insulin resistance and an impaired glucose tolerance. Since, many of the currently available drugs exhibit adverse effects and are resistant to therapies, natural products are a promising alternate in the alleviation of complex metabolic disorders. In the current study, Syzygium cumini methanolic extract (SCE) was investigated for its anti-diabetic and anti-adipogenic potential using C57BL/6 mice fed on high fat diet (HFD). The HFD fed obese mice were treated with 200 mg/kg SCE and compared with positive controls Metformin, Pioglitazone and Sodium Orthovanadate. The biometabolites in SCE were characterized using Fourier transform infrared and gas chromatography and mass spectroscopy. A reduction in blood glucose levels with improved insulin sensitivity and glucose tolerance was observed in SCE-treated HFD obese mice. Histopathological and biochemical investigations showed a reduction in hepatic injury and nephrotoxicity in SCE-administered HFD mice. Results showed inhibition of PTP1B and an upregulation of IRS1 and PKB-mediated signaling in skeletal muscle. A significant decrease in lipid markers such as TC, TG, LDL-c and VLDL-c levels were observed with increased HDL-c in SCE-treated HFD mice. A significant decrease in weight and adiposity was observed in SCE-administered HFD mice in comparison to controls. This decrease could be due to the partial agonism of PPARγ and an increased expression of adiponectin, an insulin sensitizer. Hence, the dual-modulatory effect of SCE, partly due to the presence of 26% Pyrogallol, could be useful in the management of diabetes and its associated maladies.
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Affiliation(s)
- Gopal Thiyagarajan
- Tissue Culture and Drug Discovery Laboratory, Centre for Food Technology, Department of Biotechnology, Anna University, Chennai, India
- Centre for Laboratory Animal Technology and Research, Sathyabama Institute of Science and Technology, Chennai, India
| | - Padmanaban Muthukumaran
- Tissue Culture and Drug Discovery Laboratory, Centre for Food Technology, Department of Biotechnology, Anna University, Chennai, India
| | - Durai Prabhu
- Department of Cell and Molecular Biology, Madras Diabetes Research Foundation, Chennai, India
| | | | - Lakshmi Subhadra Baddireddi
- Tissue Culture and Drug Discovery Laboratory, Centre for Food Technology, Department of Biotechnology, Anna University, Chennai, India
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2
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Muthukumaran P, Suresh Babu P, Shyamalagowri S, Aravind J, Kamaraj M, Govarthanan M. Polymeric biomolecules based nanomaterials: Production strategies and pollutant mitigation as an emerging tool for environmental application. Chemosphere 2022; 307:136008. [PMID: 35985386 DOI: 10.1016/j.chemosphere.2022.136008] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/19/2022] [Accepted: 08/07/2022] [Indexed: 06/15/2023]
Abstract
The ever-exploding global population coupled with its anthropogenic impact has imparted unparalleled detrimental effects on the environment and mitigating them has emerged as the prime challenge and focus of the current century. The niche of nanotechnology empowered by composites of biopolymers in the handling of xenobiotics and environmental clean-up has an unlimited scope. The appositeness of biopolymer-nanoparticles (Bp-NPs) for environmental contaminant mitigation has received unique consideration due to its exclusive combination of physicochemical characteristics and other attributes. The current review furnishes exhaustive scrutiny of the current accomplishments in the development of Bp-NPs and biopolymer nanomaterials (Bp-NMs) from various polymeric biomolecules. Special attention was provided for polymeric biomolecules such as cellulose, lignin, starch, chitin, and chitosan, whereas limited consideration on gelatin, alginate, and gum for the development of Bp-NPs and Bp-NMs; together with coverage of literature. Promising applications of tailored biopolymer hybrids such as Bp-NPs and Bp-NMs on environmentally hazardous xenobiotics handling and pollution management are discussed as to their notable environmental applications.
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Affiliation(s)
- P Muthukumaran
- Department of Biotechnology, Kumaraguru College of Technology, Coimbatore, 641049, Tamil Nadu, India
| | - P Suresh Babu
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam, Chennai, 602105, Tamil Nadu, India
| | - S Shyamalagowri
- PG and Research Department of Botany, Pachaiyappa's College, Chennai, 600030, TamilNadu, India
| | - J Aravind
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam, Chennai, 602105, Tamil Nadu, India
| | - M Kamaraj
- Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology -Ramapuram Campus, Chennai, 600089, Tamil Nadu, India.
| | - M Govarthanan
- Department of Environmental Engineering, Kyungpook National University, Daegu, 41566, South Korea; Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, 600 077, India.
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3
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Muthukumaran P, Kamble NL, Mishra T, Yadav R, Srinivas D, Pal PK. Comparison of Pre-Deep Brain Stimulation Clinical Profiles of Patients with Young and Late-Onset Parkinson's Disease. Ann Indian Acad Neurol 2022; 25:1214-1216. [PMID: 36911461 PMCID: PMC9996482 DOI: 10.4103/aian.aian_245_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 05/09/2022] [Accepted: 05/09/2022] [Indexed: 11/22/2022] Open
Affiliation(s)
- P Muthukumaran
- Department of Neurology, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bangalore, Karnataka, India
| | - Nitish L Kamble
- Department of Neurology, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bangalore, Karnataka, India
| | - Tanaya Mishra
- Department of Neurology, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bangalore, Karnataka, India
| | - Ravi Yadav
- Department of Neurology, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bangalore, Karnataka, India
| | - Dwarakanath Srinivas
- Department of Neurosurgery, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bangalore, Karnataka, India
| | - Pramod K Pal
- Department of Neurology, National Institute of Mental Health and Neuro Sciences (NIMHANS), Bangalore, Karnataka, India
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Mamarelis I, Mamareli CHR, Mylonas E, Mamareli V, Spilopoulos K, Kotoulas S, Kolovou P, Subramaniyan P, Muthukumaran P, Badilescu S, Koui M, Theophanides T, Kotoulas CHR, Anastassopoulou J. Infrared study and computational simulations of coronary arteries atherosclerotic lesions for early diagnosis of disease progression. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Coronary artery atherosclerotic disease is the most common cardiovascular disease and bypass grafting surgery (CABG) is an effective treatment. However, the pathogenic mechanism of coronary arteries atherosclerosis and disease progression is not yet clear.
Purpose
The use of FT-IR spectroscopy, hyperspectral microscope and mathematical simulation models are some of the tools to predict the morphological and elasticity disorders in the vessel wall due to molecular structure changes.
Methods
Biopsies of atherosclerotic native coronary arteries from 54 patients (44–85 years), who underwent coronary endarterectomy during bypass grafting surgery (CABG), were examined ex vivo. The FT-IR-spectra were recorded with a Nicolet-6700 spectrometer. Morphological changes of atheromatic plaques were performed with SEM-EDX, Fei-Co. CytoVita-Olympus hyperspectral microscope was used to obtain the cells.
Results
FT-IR spectroscopy (Figure 1A) showed that the disease affects the protein folding, leading to amyloid formation (beta-sheets), lipid peroxidation and AGEs (Advanced Glycation end products) production. The detection of amorphous CaCO3 (1415 and 872 cm–1) deposits in high lipophilic regions was of high importance. Increased mineral concentration leads to increased formation of crystalline deposits, consisting of CaCO3, CaHPO4, Ca3(PO4)2 and inorganic hydroxyapatite, resulting in arterial stenosis. Hyperspectral images confirmed the formation of micelles (1) due to amyloidosis and calcified cells (2), in agreement with FT-IR, ImageJ analysis data. Mathematical simulation model based on finite element method (Figure 1E) showed that arterial wall damage and elasticity changes were not homogenous. This model provides the time of crystallization of the calcium salts, which play crucial role to stenosis.
Conclusions
FT-IR spectra showed that the formation of amorphous CaCO3 in the presence of Mg2+, in reach of oxidized lipids regions, inhibit the development of coronary artery stenosis. Excessive of Ca2+ efflux promotes the crystallinity of CaCO3 and Ca3(PO4)2 deposits, leading to the development of atherosclerotic plaques and coronary artery stenosis. Mathematical models approach in a much better way the progression of arterial atherosclerosis.
Funding Acknowledgement
Type of funding sources: None. Figure 1
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Affiliation(s)
- I Mamarelis
- 401 Army General Hospital of Athens, Athens, Greece
| | - C H R Mamareli
- International Institute for Anticancer Research, Kapandriti Attiki, Greece
| | - E Mylonas
- National Technical University, Department of Structural Engineering, Athens, Greece
| | - V Mamareli
- International Institute for Anticancer Research, Kapandriti Attiki, Greece
| | - K Spilopoulos
- National Technical University, Department of Structural Engineering, Athens, Greece
| | - S Kotoulas
- International Institute for Anticancer Research, Kapandriti Attiki, Greece
| | - P Kolovou
- High Resolution Echo Diagnostic Center, Karditsa, Greece
| | - P Subramaniyan
- Concordia University, Optical Bio-Microsystems Laboratory, Montreal (Quebec) H3G 1M8, Canada
| | - P Muthukumaran
- Concordia University, Optical Bio-Microsystems Laboratory, Montreal (Quebec) H3G 1M8, Canada
| | - S Badilescu
- Concordia University, Optical Bio-Microsystems Laboratory, Montreal (Quebec) H3G 1M8, Canada
| | - M Koui
- National Technical University of Athens, Chemical Engineering Department, Radiation Chemistry & Biospectroscopy, Athens, Greece
| | - T Theophanides
- National Technical University of Athens, Chemical Engineering Department, Radiation Chemistry & Biospectroscopy, Athens, Greece
| | - C H R Kotoulas
- 401 General Army Hospital of Athens, Cardiac Surgery Department, Athens, Greece
| | - J Anastassopoulou
- International Institute for Anticancer Research, Kapandriti Attiki, Greece
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Muthukumaran P, Ramya R, Thivya P, Wilson J, Ravi G. Nanocomposite based on restacked crystallites of β-NiS and Ppy for the determination of theophylline and uric acid on screen-printed electrodes. NEW J CHEM 2019. [DOI: 10.1039/c9nj04246f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We synthesized calcinated β-NiS with a highly crystalline porous nature and mixed it with Ppy to prepare a nanocomposite, which exhibited high electrocatalytic activity and this was then used to detect theophylline and uric acid with high sensitivity and stability.
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Affiliation(s)
- P. Muthukumaran
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - R. Ramya
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - P. Thivya
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - J. Wilson
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - G. Ravi
- Photonic Crystals Lab
- Department of Physics
- Alagappa University
- Karaikudi-630004
- India
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Ramya R, Muthukumaran P, Wilson J. Electron beam-irradiated polypyrrole decorated with Bovine serum albumin pores: Simultaneous determination of epinephrine and L-tyrosine. Biosens Bioelectron 2018; 108:53-61. [PMID: 29499559 DOI: 10.1016/j.bios.2018.02.044] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 01/24/2018] [Accepted: 02/19/2018] [Indexed: 10/18/2022]
Abstract
In current work highly sensitive and stable electrochemical sensor for simultaneous non-enzymatic detection of epinephrine (EP), L-tyrosine (L-Tyr) is constructed based on Electron beam irradiated Polypyrrole (EB-Ppy) nanospheres (Zeta potential 33.69 mV at pH 7) embedded over bovine serum albumin (BSA) (Zeta potential - 11.54 mV at pH 7) porous structure, fabricated by simple chemical routes. The BSA structure has the advantages of large surface area, excellent structure stability, rich pore channels and redox mediator role. The constructed sensor exhibited excellent sensor performances by the combination of protein with NH group and recorded the linear response of EP, L-Tyr individual in the concentration range of 100 nM-1 mM, 100 nM-800 μM, with detection limit 7.1 nM, 8.8 nM (S/N = 3σ/b). The EB-Ppy-BSA/GCE electrochemical sensor manifests intriguing application with good sensitivity, selectivity and reproducibility towards the EP, L-Tyr detection. The practical analytical utility provides great promise by selective measurements in tea, and chicken extract which has a promising future for biological and healthcare applications.
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Affiliation(s)
- R Ramya
- Polymer Electronics Lab, Department of Bioelectronics and Biosensors, Alagappa University, Karaikudi 630004, Tamilnadu, India
| | - P Muthukumaran
- Polymer Electronics Lab, Department of Bioelectronics and Biosensors, Alagappa University, Karaikudi 630004, Tamilnadu, India
| | - J Wilson
- Polymer Electronics Lab, Department of Bioelectronics and Biosensors, Alagappa University, Karaikudi 630004, Tamilnadu, India.
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Muthukumaran P, Sathishkumar T, Alamelumangai M, Dhanalakshmi J, Mathumitha M, Renganayaki S. Extraction and Antioxidant Activity of Flavonoids from Seed Coat of Borassus flabellifer Linn using Orthogonal Array (L16(4^4)). Indian J Pharm Sci 2018. [DOI: 10.4172/pharmaceutical-sciences.1000329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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8
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Nachimuthu S, Sadhasivam B, Veerichetty V, Ponnusamy R, Muthukumaran P, T S, priya D. In Situ Synthesis of Silk Fibroin Mediated Silver Nanoparticles in Chitosan-Peo Film and Studies on Release Kinetics for Wound Dressing Application. ACTA ACUST UNITED AC 2018. [DOI: 10.30558/jchps.20181101007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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9
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Thiyagarajan G, Muthukumaran P, Sarath Kumar B, Muthusamy VS, Lakshmi BS. Selective Inhibition of PTP1B by Vitalboside A from Syzygium cumini Enhances Insulin Sensitivity and Attenuates Lipid Accumulation Via Partial Agonism to PPARγ: In Vitro and In Silico Investigation. Chem Biol Drug Des 2016; 88:302-12. [PMID: 26989847 DOI: 10.1111/cbdd.12757] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 02/24/2016] [Accepted: 03/01/2016] [Indexed: 12/23/2022]
Abstract
Although antidiabetic drugs show good insulin-sensitizing property for T2DM, they also exhibit undesirable side-effects. Partial peroxisome proliferator-activated receptor γ agonism with protein tyrosine phosphatase 1B inhibition is considered as an alternative therapeutic approach toward the development of a safe insulin sensitizer. Bioactivity-based fractionation and purification of Syzygium cumini seeds led to the isolation and identification of bifunctional Vitalboside A, which showed antidiabetic and anti-adipogenic activities, as measured by glucose uptake in L6 and 3T3-L1 adipocytes and Nile red assay. A non-competitive allosteric inhibition of protein tyrosine phosphatase 1B by Vitalboside A was observed, which was confirmed by docking studies. Inhibitor studies with wortmannin and genistein showed an IRTK- and PI3K-dependent glucose uptake. A PI3K/AKT-dependent activation of GLUT4 translocation and an inactivation of GSK3β were observed, confirming its insulin-sensitizing potential. Vitalboside A exhibited partial transactivation of peroxisome proliferator-activated receptor γ with an increase in adiponectin secretion, which was confirmed using docking analysis. Vitalboside A is a bifunctional molecule derived from edible plant showing inhibition of PTP1B and partial agonism to peroxisome proliferator-activated receptor γ which could be a promising therapeutic agent in the management of obesity and diabetes.
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Affiliation(s)
- Gopal Thiyagarajan
- Tissue culture and Drug Discovery Laboratory, Centre for Food Technology, Department of Biotechnology, Anna University, Sardar Patel Road, Guindy, Chennai-600 025, India
| | - Padmanaban Muthukumaran
- Tissue culture and Drug Discovery Laboratory, Centre for Food Technology, Department of Biotechnology, Anna University, Sardar Patel Road, Guindy, Chennai-600 025, India
| | - Baskaran Sarath Kumar
- Tissue culture and Drug Discovery Laboratory, Centre for Food Technology, Department of Biotechnology, Anna University, Sardar Patel Road, Guindy, Chennai-600 025, India
| | - Velusamy Shanmuganathan Muthusamy
- Tissue culture and Drug Discovery Laboratory, Centre for Food Technology, Department of Biotechnology, Anna University, Sardar Patel Road, Guindy, Chennai-600 025, India
| | - Baddireddi Subhadra Lakshmi
- Tissue culture and Drug Discovery Laboratory, Centre for Food Technology, Department of Biotechnology, Anna University, Sardar Patel Road, Guindy, Chennai-600 025, India
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10
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Muthukumaran P, Sumathi C, Wilson J, Ravi G. Enzymeless biosensor based on β-NiS@rGO/Au nanocomposites for simultaneous detection of ascorbic acid, epinephrine and uric acid. RSC Adv 2016. [DOI: 10.1039/c6ra19921f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, marigold flower-like self-assembled β-NiS (nickel sulfide) nanosheets were grown on rGO (reduced graphene oxide) by a single-step hydrothermal process and then gold nanospheres (AuNS) were electrochemically deposited on the β-NiS@rGO nanostructures.
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Affiliation(s)
- P. Muthukumaran
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - C. Sumathi
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - J. Wilson
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - G. Ravi
- Photonic Crystals Lab
- Department of Physics
- Alagappa University
- Karaikudi-630 004
- India
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11
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Sumathi C, Venkateswara Raju C, Muthukumaran P, Wilson J, Ravi G. Au–Pd bimetallic nanoparticles anchored on α-Fe2O3 nonenzymatic hybrid nanoelectrocatalyst for simultaneous electrochemical detection of dopamine and uric acid in the presence of ascorbic acid. J Mater Chem B 2016; 4:2561-2569. [DOI: 10.1039/c6tb00501b] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We have found that magnetic α-Fe2O3 nanocubes exhibit an intrinsic catalytic activity toward the electrochemical sensing of dopamine (DA) and uric acid (UA) in the presence of ascorbic acid.
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Affiliation(s)
- C. Sumathi
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - C. Venkateswara Raju
- Electrodics and Electrocatalysis Division
- CSIR-Central Electrochemical Research Institute
- Karaikudi 630 003
- India
| | - P. Muthukumaran
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - J. Wilson
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - G. Ravi
- Photonic Crystals Lab
- Department of Physics
- Alagappa University
- Karaikudi-630 004
- India
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12
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Sumathi C, Muthukumaran P, Thivya P, Wilson J, Ravi G. DNA mediated electrocatalytic enhancement of α-Fe2O3–PEDOT–C-MoS2hybrid nanostructures for riboflavin detection on screen printed electrode. RSC Adv 2016. [DOI: 10.1039/c6ra16279g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile synthesis of DNA wrapped iron oxide nanorods and PEDOT (poly(3,4-ethylenedioxythiophene)) nanospheres on carbon supported MoS2(C-MoS2) is reported for riboflavin (RF) sensing.
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Affiliation(s)
- C. Sumathi
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - P. Muthukumaran
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - P. Thivya
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - J. Wilson
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - G. Ravi
- Photonic Crystals Lab
- Department of Physics
- Alagappa University
- Karaikudi-630 004
- India
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13
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Sumathi C, Muthukumaran P, Radhakrishnan S, Ravi G, Wilson J. Riboflavin detection by α-Fe2O3/MWCNT/AuNPs-based composite and a study of the interaction of riboflavin with DNA. RSC Adv 2015. [DOI: 10.1039/c4ra14762f] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The electrochemical behavior of riboflavin (RF) at a glassy carbon electrode modified with α-Fe2O3/MWCNT/AuNPs was investigated by cyclic voltammetry (CV) and square wave voltammetry (SWV).
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Affiliation(s)
- C. Sumathi
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630003
- India
| | - P. Muthukumaran
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630003
- India
| | - S. Radhakrishnan
- Nanomaterials and System Lab
- Department of Mechanical System Engineering
- Jeju National University
- Republic of Korea
| | - G. Ravi
- Photonic Crystals Lab
- Department of Physics
- Alagappa University
- Karaikudi-630003
- India
| | - J. Wilson
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630003
- India
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14
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Krishnaraj C, Muthukumaran P, Ramachandran R, Balakumaran MD, Kalaichelvan PT. Acalypha indica Linn: Biogenic synthesis of silver and gold nanoparticles and their cytotoxic effects against MDA-MB-231, human breast cancer cells. ACTA ACUST UNITED AC 2014. [PMID: 28626661 PMCID: PMC5466127 DOI: 10.1016/j.btre.2014.08.002] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study reports the in vitro cytotoxic effect of biologically synthesized silver and gold nanoparticles against MDA-MB-231, human breast cancer cells. Formation of silver and gold nanoparticles was observed within 30 min and the various characterization techniques such as UV–vis spectrophotometer, FE-SEM, TEM and XRD studies were confirmed the synthesis of nanoparticles. Further, MTT, acridine orange and ethidium bromide (AO/EB) dual staining, caspase-3 and DNA fragmentation assays were carried out using various concentrations of silver and gold nanoparticles ranging from 1 to 100 μg/ml. At 100 μg/ml concentration, the plant extract derived nanoparticles exhibited significant cytotoxic effects and the apoptotic features were confirmed through caspase-3 activation and DNA fragmentation assays. Thus, the results of the present study indicate that biologically synthesized silver and gold nanoparticles might be used to treat breast cancer; however, it necessitates clinical studies to ascertain their potential as anticancer agents.
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Affiliation(s)
- C Krishnaraj
- Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai 600 025, Tamil Nadu, India
| | - P Muthukumaran
- Centre for Biotechnology, Anna University, Guindy, Chennai 600 025, Tamil Nadu, India
| | - R Ramachandran
- Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai 600 025, Tamil Nadu, India
| | - M D Balakumaran
- Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai 600 025, Tamil Nadu, India
| | - P T Kalaichelvan
- Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai 600 025, Tamil Nadu, India
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15
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Muthukumaran P, Sumathi C, Wilson J, Sekar C, Leonardi SG, Neri G. Fe2O3/Carbon Nanotube-Based Resistive Sensors for the Selective Ammonia Gas Sensing. ACTA ACUST UNITED AC 2014. [DOI: 10.1166/sl.2014.3220] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Sumathi C, Muthukumaran P, Radhakrishnan S, Wilson J, Umar A. Controlled growth of single-crystalline nanostructured dendrites of α-Fe2O3 blended with MWCNT: a systematic investigation of highly selective determination of l-dopa. RSC Adv 2014. [DOI: 10.1039/c4ra01451k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Tharkar S, Kumpatla S, Muthukumaran P, Viswanathan V. High prevalence of metabolic syndrome and cardiovascular risk among police personnel compared to general population in India. J Assoc Physicians India 2008; 56:845-849. [PMID: 19263681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE There is a paucity of data on the prevalence of metabolic syndrome and diabetes in different occupational categories in India. The aim of this study was to determine the prevalence of metabolic syndrome and associated cardiovascular risk factors among police personnel and compare with the general population (GP). METHODS Two populations similar in demography were selected for this study. A total of 719 men aged > or = 30 years from Chennai, were randomly selected (police n = 318, GP n = 401). Fasting blood samples were collected, glucose and lipid profile were estimated. Prevalence of metabolic syndrome was determined using IDF definition. Risk associations for metabolic syndrome and diabetes were analyzed using multiple logistic regression analyses. RESULTS The prevalence of metabolic syndrome (57.3 vs 28.2%; chi2 = 64.5, p < 0.0001) was significantly higher among police compared to GP. Regression analyses showed that age, body mass index, alcohol consumption and smoking were associated with metabolic syndrome while age, family history of diabetes, abdominal adiposity and increased body mass index were associated with diabetes among the policemen. The police had higher prevalence of individual cardio metabolic abnormalities and diabetes in comparison with GP (p < 0.05). CONCLUSION Prevalence of metabolic syndrome and other cardiometabolic abnormalities were significantly higher among the police. Further research is required to determine the causative factors and effective intervention strategies must be planned to keep the police force healthy and vigilant.
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Affiliation(s)
- Shabana Tharkar
- M. V. Hospital for Diabetes and Diabetes Research Centre (WHO Collaborating Centre for Research, Education and Training in diabetes) No-4, Main Road, Royapuram, Chennai, India
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