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Cai D, Wang X, Wang Q, Tong P, Niu W, Guo X, Yu J, Chen X, Liu X, Zhou D, Yin F. β-cyclodextrin inclusion complexes with short-chain phenolipids: An effective formulation for the dual sustained-release of phenolic compounds. Food Res Int 2024; 187:114423. [PMID: 38763674 DOI: 10.1016/j.foodres.2024.114423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/21/2024] [Accepted: 04/22/2024] [Indexed: 05/21/2024]
Abstract
The β-cyclodextrin and short-chain alkyl gallates (A-GAs), which are representative of phenolipids, such as butyl, propyl, ethyl, and methyl gallates, were chosen to form inclusion complexes by the use of the freeze-drying process. In the everted rat gut sac model, HPLC-UV analysis demonstrated that the released A-GAs from inclusion complexes were degraded to yield free gallic acid (GA) (sustained-release function 1). The small intestine membrane may be crossed by both the GA and the A-GAs. A-GAs may also undergo hydrolysis to provide GA (sustained-release function 2) following transmembrane transfer. Clearly, a helpful technique for the dual sustained-release of phenolic compounds is to produce β-cyclodextrin inclusion complexes with short-chain phenolipids. This will increase the bioactivities of phenolic compounds and prolong their in vivo residence length. Moreover, changing the carbon-chain length of these β-cyclodextrin inclusion complexes would readily modify the dual sustained-release behavior of the phenolic compounds. Thus, our work effectively established a theoretical foundation for the use of β-cyclodextrin inclusion complexes containing short-chain phenolipids as new source of functional food components to provide the body with phenolic compounds more efficiently.
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Affiliation(s)
- Dong Cai
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Xinmiao Wang
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Qian Wang
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Peiyong Tong
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Weiyuan Niu
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Xu Guo
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Jinghan Yu
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Xuan Chen
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, People's Republic of China
| | - Xiaoyang Liu
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Dayong Zhou
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Fawen Yin
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China.
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2
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Das S, Malik M, Dastidar DG, Roy R, Paul P, Sarkar S, Chakraborty P, Maity A, Dasgupta M, Gupta AD, Chatterjee S, Sarker RK, Maiti D, Tribedi P. Piperine, a phytochemical prevents the biofilm city of methicillin-resistant Staphylococcus aureus: A biochemical approach to understand the underlying mechanism. Microb Pathog 2024; 189:106601. [PMID: 38423404 DOI: 10.1016/j.micpath.2024.106601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 02/21/2024] [Indexed: 03/02/2024]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA), a drug-resistant human pathogen causes several nosocomial as well as community-acquired infections involving biofilm machinery. Hence, it has gained a wide interest within the scientific community to impede biofilm-induced MRSA-associated health complications. The current study focuses on the utilization of a natural bioactive compound called piperine to control the biofilm development of MRSA. Quantitative assessments like crystal violet, total protein recovery, and fluorescein-di-acetate (FDA) hydrolysis assays, demonstrated that piperine (8 and 16 μg/mL) could effectively compromise the biofilm formation of MRSA. Light and scanning electron microscopic image analysis confirmed the same. Further investigation revealed that piperine could reduce extracellular polysaccharide production by down-regulating the expression of icaA gene. Besides, piperine could reduce the cell-surface hydrophobicity of MRSA, a crucial factor of biofilm formation. Moreover, the introduction of piperine could interfere with microbial motility indicating the interaction of piperine with the quorum-sensing components. A molecular dynamics study showed a stable binding between piperine and AgrA protein (regulator of quorum sensing) suggesting the possible meddling of piperine in quorum-sensing of MRSA. Additionally, the exposure to piperine led to the accumulation of intracellular reactive oxygen species (ROS) and potentially heightened cell membrane permeability in inhibiting microbial biofilm formation. Besides, piperine could reduce the secretion of diverse virulence factors from MRSA. Further exploration revealed that piperine interacted with extracellular DNA (e-DNA), causing disintegration by weakening the biofilm architecture. Conclusively, this study suggests that piperine could be a potential antibiofilm molecule against MRSA-associated biofilm infections.
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Affiliation(s)
- Sharmistha Das
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Moumita Malik
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Debabrata Ghosh Dastidar
- Guru Nanak Institute of Pharmaceutical Science and Technology, 157/F Nilgunj Road, Panihati, Kolkata, West Bengal, 700114, India.
| | - Ritwik Roy
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Payel Paul
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Sarita Sarkar
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Poulomi Chakraborty
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Alakesh Maity
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Monikankana Dasgupta
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Anirban Das Gupta
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Sudipta Chatterjee
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Ranojit Kumar Sarker
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
| | - Debasish Maiti
- Department of Human Physiology, Tripura University, Suryamaninagar, Agartala, Tripura, 799022, India.
| | - Prosun Tribedi
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
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3
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Das S, Roy R, Paul P, Chakraborty P, Chatterjee S, Malik M, Sarkar S, Das Gupta A, Maiti D, Tribedi P. Piperine, a Plant Alkaloid, Exhibits Efficient Disintegration of the Pre-existing Biofilm of Staphylococcus aureus: a Step Towards Effective Management of Biofilm Threats. Appl Biochem Biotechnol 2024; 196:1272-1291. [PMID: 37389724 DOI: 10.1007/s12010-023-04610-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/19/2023] [Indexed: 07/01/2023]
Abstract
Staphylococcus aureus causes a range of chronic infections in humans by exploiting its biofilm machinery and drug-tolerance property. Although several strategies have been proposed to eradicate biofilm-linked issues, here, we have explored whether piperine, a bioactive plant alkaloid, can disintegrate an already existing Staphylococcal biofilm. Towards this direction, the cells of S. aureus were allowed to develop biofilm first followed by treatment with the test concentrations (8 and 16 µg/mL) of piperine. In this connection, several assays such as total protein recovery assay, crystal violet assay, extracellular polymeric substances (EPS) measurement assay, fluorescein diacetate hydrolysis assay, and fluorescence microscopic image analysis confirmed the biofilm-disintegrating property of piperine against S. aureus. Piperine reduced the cellular auto-aggregation by decreasing the cell surface hydrophobicity. On further investigation, we observed that piperine could down regulate the dltA gene expression that might reduce the cell surface hydrophobicity of S. aureus. It was also observed that the piperine-induced accumulation of reactive oxygen species (ROS) could enhance biofilm disintegration by decreasing the cell surface hydrophobicity of the test organism. Together, all the observations suggested that piperine could be used as a potential molecule for the effective management of the pre-existing biofilm of S. aureus.
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Affiliation(s)
- Sharmistha Das
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Ritwik Roy
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Payel Paul
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Poulomi Chakraborty
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Sudipta Chatterjee
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Moumita Malik
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Sarita Sarkar
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Anirban Das Gupta
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Debasish Maiti
- Department of Human Physiology, Tripura University, Suryamaninagar, Agartala, Tripura, 799022, India
| | - Prosun Tribedi
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
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4
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Ghosh C, Das MC, Acharjee S, Bhattacharjee S, Sandhu P, Kumari M, Bhowmik J, Ghosh R, Banerjee B, De UC, Akhter Y, Bhattacharjee S. Combating Staphylococcus aureus biofilm formation: the inhibitory potential of tormentic acid and 23-hydroxycorosolic acid. Arch Microbiol 2023; 206:25. [PMID: 38108905 DOI: 10.1007/s00203-023-03762-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 11/07/2023] [Accepted: 11/19/2023] [Indexed: 12/19/2023]
Abstract
Plant extracts have been used to treat microbiological diseases for centuries. This study examined plant triterpenoids tormentic acid (TA) and 23-hydroxycorosolic acid (HCA) for their antibiofilm effects on Staphylococcus aureus strains (MTCC-96 and MTCC-7405). Biofilms are bacterial colonies bound by a matrix of polysaccharides, proteins, and DNA, primarily impacting healthcare. As a result, ongoing research is being conducted worldwide to control and prevent biofilm formation. Our research showed that TA and HCA inhibit S. aureus planktonic growth by depolarizing the bacterial membrane. In addition, zone of inhibition studies confirmed their effectiveness, and crystal violet staining and biofilm protein quantification confirmed their ability to prevent biofilm formation. TA and HCA exhibited substantial reductions in biofilm formation for S. aureus (MTCC-96) by 54.85% and 48.6% and for S. aureus (MTCC-7405) by 47.07% and 56.01%, respectively. Exopolysaccharide levels in S. aureus biofilm reduced significantly by TA (25 μg/mL) and HCA (20 μg/mL). Microscopy, bacterial motility, and protease quantification studies revealed their ability to reduce motility and pathogenicity. Furthermore, TA and HCA treatment reduced the mRNA expression of S. aureus virulence genes. In silico analysis depicted a high binding affinity of triterpenoids for biofilm and quorum-sensing associated proteins in S. aureus, with TA having the strongest affinity for TarO (- 7.8 kcal/mol) and HCA for AgrA (- 7.6 kcal/mol). TA and HCA treatment reduced bacterial load in S. aureus-infected peritoneal macrophages and RAW264.7 cells. Our research indicates that TA and HCA can effectively combat S. aureus by inhibiting its growth and suppressing biofilm formation.
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Affiliation(s)
- Chinmoy Ghosh
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, Tripura, 799022, India
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, 751024, India
| | - Manash C Das
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, Tripura, 799022, India
| | - Shukdeb Acharjee
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, Tripura, 799022, India
| | - Samadrita Bhattacharjee
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, Tripura, 799022, India
| | - Padmani Sandhu
- Centre for Computational Biology and Bioinformatics, School of Life Sciences, Central University of Himachal Pradesh, Shahpur, Kangra, Himachal Pradesh, 176206, India
| | - Monika Kumari
- Centre for Computational Biology and Bioinformatics, School of Life Sciences, Central University of Himachal Pradesh, Shahpur, Kangra, Himachal Pradesh, 176206, India
| | - Joyanta Bhowmik
- Department of Chemistry, Tripura University (A Central University), Suryamaninagar, Tripura, 799022, India
| | - Ranjit Ghosh
- Department of Chemistry, Tripura University (A Central University), Suryamaninagar, Tripura, 799022, India
| | | | - Utpal Chandra De
- Department of Chemistry, Tripura University (A Central University), Suryamaninagar, Tripura, 799022, India
| | - Yusuf Akhter
- Department of Biotechnology, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, Uttar Pradesh, India
| | - Surajit Bhattacharjee
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, Tripura, 799022, India.
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5
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Paul P, Sarkar S, Dastidar DG, Shukla A, Das S, Chatterjee S, Chakraborty P, Tribedi P. 1, 4-naphthoquinone efficiently facilitates the disintegration of pre-existing biofilm of Staphylococcus aureus through eDNA intercalation. Folia Microbiol (Praha) 2023; 68:843-854. [PMID: 37142893 DOI: 10.1007/s12223-023-01053-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 04/04/2023] [Indexed: 05/06/2023]
Abstract
1, 4-naphthoquinone, a plant-based quinone derivative, has gained much attention for its effectiveness against several biofilm-linked diseases. The biofilm inhibitory effect of 1, 4-naphthoquinone against Staphylococcus aureus has already been reported in our previous study. We observed that the extracellular DNA (eDNA) could play an important role in holding the structural integrity of the biofilm. Hence, in this study, efforts have been directed to examine the possible interactions between 1, 4-naphthoquinone and DNA. An in silico analysis indicated that 1, 4-naphthoquinone could interact with DNA through intercalation. To validate the same, UV-Vis spectrophotometric analysis was performed in which a hypochromic shift was observed when the said molecule was titrated with calf-thymus DNA (CT-DNA). Thermal denaturation studies revealed a change of 8℃ in the melting temperature (Tm) of CT-DNA when complexed with 1, 4-naphthoquinone. The isothermal calorimetric titration (ITC) assay revealed a spontaneous intercalation between CT-DNA and 1, 4-naphthoquinone with a binding constant of 0.95 ± 0.12 × 108. Furthermore, DNA was run through an agarose gel electrophoresis with a fixed concentration of ethidium bromide and increasing concentrations of 1, 4-naphthoquinone. The result showed that the intensity of ethidium bromide-stained DNA got reduced concomitantly with the gradual increase of 1, 4-naphthoquinone suggesting its intercalating nature. To gain further confidence, the pre-existing biofilm was challenged with ethidium bromide wherein we observed that it could also show biofilm disintegration. Therefore, the results suggested that 1, 4-naphthoquinone could exhibit disintegration of the pre-existing biofilm of Staphylococcus aureus through eDNA intercalation.
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Affiliation(s)
- Payel Paul
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Sarita Sarkar
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Debabrata Ghosh Dastidar
- Guru Nanak Institute of Pharmaceutical Science and Technology, 157/F Nilgunj Road, Panihati, Kolkata, West Bengal, 700114, India
| | - Aditya Shukla
- Department of Microbiology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India
| | - Sharmistha Das
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Sudipta Chatterjee
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Poulomi Chakraborty
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Prosun Tribedi
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
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6
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Waly DA, Zeid AHA, Attia HN, Ahmed KA, El-Kashoury ESA, El Halawany AM, Mohammed RS. Comprehensive phytochemical characterization of Persea americana Mill. fruit via UPLC/HR-ESI-MS/MS and anti-arthritic evaluation using adjuvant-induced arthritis model. Inflammopharmacology 2023; 31:3243-3262. [PMID: 37936023 PMCID: PMC10692038 DOI: 10.1007/s10787-023-01365-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 10/06/2023] [Indexed: 11/09/2023]
Abstract
Persea americana Mill. (avocado fruit) has many health benefits when added to our diet due to various pharmacological activities, such as preventing bone loss and inflammation, modulating immune response and acting as an antioxidant. In the current study, the total ethanol extract (TEE) of the fruit was investigated for in vitro antioxidant and anti-inflammatory activity via DPPH and cyclooxygenase enzyme inhibition. Biological evaluation of the antiarthritic effect of the fruit extract was further investigated in vivo using Complete Freund's Adjuvant (CFA) arthritis model, where the average percentages of body weight change, inhibition of paw edema, basal paw diameter/weight and spleen index were estimated for all animal groups. Inflammatory mediators such as serum IL-6 and TNF-α were also determined, in addition to histopathological examination of the dissected limbs isolated from all experimental animals. Eighty-one metabolites belonging to different chemical classes were detected in the TEE of P. americana fruit via UPLC/HR-ESI-MS/MS. Two classes of lyso-glycerophospholipids; lyso-glycerophosphoethanolamines and lysoglycerophosphocholines were detected for the first time in avocado fruit in the positive mode. The TEE of fruit exhibited significant antioxidant and anti-inflammatory activity in vitro. In vivo anti-arthritic activity of the fruit TEE improved paw parameters, inflammatory mediators and spleen index. Histopathological findings showed marked improvements in the arthritic condition of the excised limbs. Therefore, avocado fruit could be proposed to be a powerful antioxidant and antiarthritic natural product.
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Affiliation(s)
- Dina Atef Waly
- Department of Pharmacognosy, National Research Centre (ID: 60014618), 33-Elbohouth St (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Egypt.
| | - Aisha Hussein Abou Zeid
- Department of Pharmacognosy, National Research Centre (ID: 60014618), 33-Elbohouth St (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Egypt
| | - Hanan Naeim Attia
- Medicinal and Pharmaceutical Chemistry Department (Pharmacology Group), National Research Centre (ID: 60014618), 33-Elbohouth St (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Egypt
| | - Kawkab A Ahmed
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, P.O. 12211, Giza, Egypt
| | | | - Ali Mahmoud El Halawany
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr-El Ainy Street, Cairo, 11562, Egypt
| | - Reda Sayed Mohammed
- Department of Pharmacognosy, National Research Centre (ID: 60014618), 33-Elbohouth St (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Egypt.
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7
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Getahun M, Nesru Y, Ahmed M, Satapathy S, Shenkute K, Gupta N, Naimuddin M. Phytochemical Composition, Antioxidant, Antimicrobial, Antibiofilm, and Antiquorum Sensing Potential of Methanol Extract and Essential Oil from Acanthus polystachyus Delile (Acanthaceae). ACS OMEGA 2023; 8:43024-43036. [PMID: 38024770 PMCID: PMC10653062 DOI: 10.1021/acsomega.3c06246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/20/2023] [Accepted: 10/12/2023] [Indexed: 12/01/2023]
Abstract
The evolution of microbes in response to conventional antimicrobials leads to antimicrobial resistance (AMR) and multidrug resistance (MDR), and it is a global threat to public health. Natural products are possible solutions to this massive challenge. In this study, the potential of Acanthus polystachyus extracts was investigated for phytochemical composition and biological properties as antimicrobials. Gas chromatography-mass spectra (GC-MS) analysis of methanol extract (ME) and essential oil (EO) detected 79 and 20 compounds, respectively. The major compounds identified in ME and their abundance were β-sitosterol acetate (16.06%), cholest-5-en-3-yl (9Z)-9-octadecenoate (9.54%), 1-dodecanol (7.57%), (S)-(E)-(-)-4-acetoxy-1-phenyl-2-dodecen-1-one (6.03%), neophytadiene (5.7%), (E)-2-nonadecene (3.9%), hexanol-4-D2 (2.92%), and decane (2.4%). Most compounds have known bioactive functions. In EO, the major compounds were stearyl alcohol (25.38%); cis-9-tetradecenoic acid, isobutyl ester (22.95%); butyl 9-tetradecenoate (10.62%); 11,13-dimethyl-12-tetradecen-1-ol acetate (10.14%); ginsenol (3.48%); and diisooctyl phthalate (2.54%). All compounds are known to be bioactive. The antioxidant activity of ME and EO ranged from 48.3 to 84.2% radical scavenging activity (RSA) and 45.6 to 82% RSA, respectively, with dose dependency. The disc diffusion assay for the antimicrobial activity of ME revealed high inhibition against Acenetobacter baumannii (130.2%), Pseudomonas aeruginosa (100.3%), and Staphylococcus aureus (87.7%). The MIC, MBC/MFC, and MBIC values for ME were 0.5-1.0, 2-4, and 0.5-1.0 mg/mL and for EO were 0.31-0.62, 1.25-2.5, and 0.31-0.62 μL/mL, respectively, indicating inhibition potential as well as inhibition of biofilm formation. The tolerance test values indicated bactericidal activity against most strains and bacteriostatic/fungistatic activity against A. baumannii, E. faecalis, and C. albicans. The antiquorum sensing activity of ME achieved by pyocyanin inhibition assay on P. aeruginosa showed a 51.6% inhibition at 500 μg/mL. These results suggest that ME and EO derived from A. polystachyus leaves are potent, valuable, cost-effective antioxidants and antimicrobials. Both extracts may effectively combat pathogenic and resistant microbes.
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Affiliation(s)
- Meron Getahun
- Department
of Applied Biology, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888 Adama, Ethiopia
| | - Yonatan Nesru
- Department
of Applied Biology, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888 Adama, Ethiopia
| | - Muktar Ahmed
- Institute
of Pharmaceutical Sciences, Adama Science
and Technology University, P.O. Box 1888 Adama, Ethiopia
| | - Sunita Satapathy
- Department
of Zoology, School of Applied Science, Centurion
University of Technology & Management, Bhubaneswar 752050, Odisha, India
| | - Kebede Shenkute
- Department
of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888 Adama, Ethiopia
| | - Neeraj Gupta
- Department
of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888 Adama, Ethiopia
| | - Mohammed Naimuddin
- Department
of Applied Biology, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888 Adama, Ethiopia
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8
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Paul P, Roy R, Das S, Sarkar S, Chatterjee S, Mallik M, Shukla A, Chakraborty P, Tribedi P. The combinatorial applications of 1,4-naphthoquinone and tryptophan inhibit the biofilm formation of Staphylococcus aureus. Folia Microbiol (Praha) 2023; 68:801-811. [PMID: 37097592 DOI: 10.1007/s12223-023-01054-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 04/04/2023] [Indexed: 04/26/2023]
Abstract
Microorganisms embedded within an extracellular polymeric matrix are known as biofilm. The extensive use of antibiotics to overcome the biofilm-linked challenges has led to the emergence of multidrug-resistant strains. Staphylococcus aureus is one such nosocomial pathogen that is known to cause biofilm-linked infections. Thus, novel strategies have been adopted in this study to inhibit the biofilm formation of S. aureus. Two natural compounds, namely, 1,4-naphthoquinone (a quinone derivative) and tryptophan (aromatic amino acid), have been chosen as they could independently show efficient antibiofilm activity. To enhance the antibiofilm potential, the two compounds were combined and tested against the same organism. Several experiments like crystal violet (CV) assay, protein estimation, extracellular polymeric substance (EPS) extraction, and estimation of metabolic activity confirmed that the combination of the two compounds could significantly inhibit the biofilm formation of S. aureus. To comprehend the underlying mechanism, efforts were further directed to understand whether the two compounds could inhibit biofilm formation by compromising the cell surface hydrophobicity of the bacteria. The results revealed that the cell surface hydrophobicity got reduced by ~ 49% when the compounds were applied together. Thus, the combinations could show enhanced antibiofilm activity by attenuating cell surface hydrophobicity. Further studies revealed that the selected concentrations of the compounds could disintegrate (~ 70%) the pre-existing biofilm of the test bacteria without showing any antimicrobial activity. Hence, the combined application of tryptophan and 1,4-naphthoquinone could be used to inhibit the biofilm threats of S. aureus.
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Affiliation(s)
- Payel Paul
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Ritwik Roy
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Sharmistha Das
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Sarita Sarkar
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Sudipta Chatterjee
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Moumita Mallik
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Aditya Shukla
- Department of Microbiology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India
| | - Poulomi Chakraborty
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Prosun Tribedi
- Microbial Ecology Research Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
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9
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Rajan PP, Kumar P, Mini M, Jayakumar D, Vaikkathillam P, Asha S, Mohan A, S M. Antibiofilm potential of gallic acid against Klebsiella pneumoniae and Enterobacter hormaechei: in-vitro and in-silico analysis. BIOFOULING 2023; 39:948-961. [PMID: 37975308 DOI: 10.1080/08927014.2023.2279996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 10/27/2023] [Indexed: 11/19/2023]
Abstract
Biofilm refers to a community of microorganisms that adhere to a substrate and play a crucial role in microbial pathogenesis and developing infections associated with medical devices. Enterobacter hormaechei and Klebsiella pneumoniae are classified as significant nosocomial pathogens within the ESKAPE category and cause diverse infections. In addition to their reputation as prolific biofilm formers, these pathogens are increasingly becoming drug-resistant and pose a substantial threat to the healthcare setting. Due to the inherent resistance of biofilms to conventional therapies, novel strategies are imperative for effectively controlling E. hormaechei and K. pneumoniae biofilms. This study aimed to assess the anti-biofilm activity of gallic acid (GA) against E. hormaechei and K. pneumoniae. The results of biofilm quantification assays demonstrated that GA exhibited significant antibiofilm activity against E. hormaechei and K. pneumoniae at concentrations of 4 mg mL-1, 2 mg mL-1, 1 mg mL-1, and 0.5 mg mL-1. Similarly, GA exhibited a dose-dependent reduction in violacein production, a QS-regulated purple pigment, indicating its ability to suppress violacein production and disrupt QS mechanisms in Chromobacterium violaceum. Additionally, computational tools were utilized to identify the potential target involved in the biofilm formation pathway. The computational analysis further indicated the strong binding affinity of GA to essential biofilm regulators, MrkH and LuxS, suggesting its potential in targeting the c-di-GMP and quorum sensing (QS) pathways to hinder biofilm formation in K. pneumoniae. These compelling findings strongly advocate GA as a promising drug candidate against biofilm-associated infections caused by E. hormaechei and K. pneumoniae.
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Affiliation(s)
- Pooja P Rajan
- Department of Zoology, Government College for Women, Thiruvananthapuram, Kerala, India
| | - Praveen Kumar
- Department of Zoology, Government College for Women, Thiruvananthapuram, Kerala, India
| | - Minsa Mini
- Department of Zoology, Government College for Women, Thiruvananthapuram, Kerala, India
| | - Devi Jayakumar
- Department of Zoology, Government College for Women, Thiruvananthapuram, Kerala, India
| | | | - Sneha Asha
- Department of Zoology, Government College for Women, Thiruvananthapuram, Kerala, India
| | - Aparna Mohan
- Department of Zoology, Government College for Women, Thiruvananthapuram, Kerala, India
| | - Manjusree S
- Department of Microbiology, Government Medical College, Thiruvananthapuram, Kerala, India
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10
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Mini M, Jayakumar D, Kumar P. In-silico and in-vitro assessment of the antibiofilm potential of azo dye, carmoisine against Pseudomonas aeruginosa. J Biomol Struct Dyn 2023:1-11. [PMID: 37485898 DOI: 10.1080/07391102.2023.2237579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 07/07/2023] [Indexed: 07/25/2023]
Abstract
Biofilm is a community of microorganisms attached to the substrate and plays a significant role in microbial pathogenesis and medical device-related infection. Pseudomonas aeruginosa (PA) is a highly infectious gram-negative opportunistic biofilm-forming bacterium with high antibiotic resistance. Several reports underscore the antimicrobial activity of natural and synthetic food coloring agents, including carmoisine, turmeric dye, red amaranth dye, and phloxine B. However, their ability to suppress the PA biofilm is not clearly understood. Carmoisine is a red-colored synthetic azo dye containing naphthalene subunits and sulfonic groups and is widely used as a food coloring agent. This study investigated the antibiofilm potential and possible mechanism of biofilm inhibition by carmoisine against PA. Computational studies through molecular docking revealed that carmoisine strongly binds to QS regulator LasR (-12.7) and relatively less strongly but significantly with WspR (-6.9). Further analysis of the docked LasR-carmoisine complex using 100 ns MD simulation (Desmond, Schrödinger) validated the bonding strength and stability. Crystal violet assay, triphenyl tetrazolium chloride salt assay, and confocal microscopic studies were adopted for biofilm quantification, and the results indicated the dose-dependent antibiofilm activity of carmoisine against PA. We hypothesise that the carmoisine-mediated reduction of biofilm in PA is due to its interaction with LasR and interference with the QS system. The computational and biochemical analysis of another compound, 1,2-naphthoquinone-4-sulphonic acid, reiterated the role of the naphthalene ring in biofilm inhibition. Hence, this work will pave the way for the future discovery of antibiofilm drugs based on naphthalene ring-based lead compounds.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Minsa Mini
- Department of Zoology, Government College for Women, Thiruvananthapuram, Kerala, India
| | - Devi Jayakumar
- Department of Zoology, Government College for Women, Thiruvananthapuram, Kerala, India
| | - Praveen Kumar
- Department of Zoology, Government College for Women, Thiruvananthapuram, Kerala, India
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11
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Masuku M, Mozirandi W, Mukanganyama S. Evaluation of the Antibacterial and Antibiofilm Effects of Ethyl Acetate Root Extracts from Vernonia adoensis (Asteraceae) against Pseudomonas aeruginosa. ScientificWorldJournal 2023; 2023:5782656. [PMID: 37324654 PMCID: PMC10264714 DOI: 10.1155/2023/5782656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/28/2023] [Accepted: 05/31/2023] [Indexed: 06/17/2023] Open
Abstract
There is an increase in mortality and morbidity in the health facilities due to nosocomial infections caused by multidrug-resistant nosocomial bacteria; hence, there is a need for new antibacterial agents. Vernonia adoensis has been found to possess medicinal value. Plant phytochemicals may have antimicrobial activity against some resistant pathogens. The antibacterial efficacy of root extracts against Staphylococcus aureus and Pseudomonas aeruginosa was investigated using the microbroth dilution method. All extracts from the roots had an inhibitory effect on the growth of both bacteria, with the most susceptible being P. aeruginosa. The most potent extract was the ethyl acetate extract which caused a percentage inhibition of 86% against P. aeruginosa. The toxicity of the extract was determined on sheep erythrocytes, and its effect on membrane integrity was determined by quantifying the amount of protein and nucleic acid leakage from the bacteria. The lowest concentration of extract used, which was 100 µg/ml, did not cause haemolysis of the erythrocytes, while at 1 mg/ml of the extract, 21% haemolysis was observed. The ethyl acetate extract caused membrane impairment of P. aeruginosa, leading to protein leakage. The effect of the extract on the biofilms of P. aeruginosa was determined in 96-microwell plates using crystal violet. In the concentration range of 0-100 µg/ml, the extract inhibited the formation of biofilms and decreased the attachment efficiency. The phytochemical constituents of the extract were determined using gas chromatography-mass spectrometry. Results of analysis showed the presence of 3-methylene-15-methoxy pentadecanol, 2-acetyl-6-(t-butyl)-4-methylphenol, 2-(2,2,3,3-tetrafluoropropanoyl) cyclohexane-1,4-dione, E,E,Z-1,3,12-nonadecatriene-5,14-diol, and stigmasta-5,22-dien-3-ol. Fractionation and purification will elucidate the potential antimicrobial compounds which are present in the roots of V. adoensis.
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Affiliation(s)
- Mercy Masuku
- Department of Biotechnology and Biochemistry, University of Zimbabwe, Mt. Pleasant, Harare, Zimbabwe
| | - Winnie Mozirandi
- Department of Biotechnology and Biochemistry, University of Zimbabwe, Mt. Pleasant, Harare, Zimbabwe
| | - Stanley Mukanganyama
- Department of Biotechnology and Biochemistry, University of Zimbabwe, Mt. Pleasant, Harare, Zimbabwe
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12
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Ferreira JA, Ramos JA, Dutra DRCS, Di Lella B, Helmick EE, Queiroz SCN, Bahder BW. Identification of Green-Leaf Volatiles Released from Cabbage Palms ( Sabal palmetto) Infected with the Lethal Bronzing Phytoplasma. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12112164. [PMID: 37299142 DOI: 10.3390/plants12112164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/15/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023]
Abstract
Lethal bronzing (LB) is a fatal infection that affects over 20 species of palms (Arecaceae) and is caused by the phytoplasma 'Candidatus Phytoplasma aculeata'. This pathogen causes significant economic losses to landscape and nursery companies in Florida, USA. Recently, the vector was determined to be the planthopper Haplaxius crudus, which was more abundant on LB-infected palms. Herein, the volatile chemicals emitted from LB-infected palms were characterized using headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry (HS-SPME/GC-MS). Infected Sabal palmetto were identified and confirmed as positive for LB via quantitative PCR. Healthy controls of each species were selected for comparison. All infected palms exhibited elevated levels of hexanal and E-2-hexenal. Threatened palms showed high releasing concentrations of 3-hexenal and Z-3-hexen-1-ol. The volatiles characterized herein are common green-leaf volatiles (GLVs) emitted by plants under stress. This study considers the first documented case of GLVs in palms attributed to phytoplasma infection. Due to the apparent attraction of LB-infected palms to the vector, one or several of the GLVs identified in this study could serve as a lure for the vector and supplement management programs.
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Affiliation(s)
- Jordana A Ferreira
- Laboratory of Residues and Contaminants, Embrapa Environment, Rodovia SP 340, km 127.5, Jaguariúna 13918-110, SP, Brazil
| | - José A Ramos
- College of Computing and Engineering, Nova Southeastern University, 3301 College Avenue, Fort Lauderdale, FL 33314-7719, USA
| | - Debora R C S Dutra
- Laboratory of Residues and Contaminants, Embrapa Environment, Rodovia SP 340, km 127.5, Jaguariúna 13918-110, SP, Brazil
| | - Brandon Di Lella
- Department of Entomology and Nematology, University of Florida-Fort Lauderdale Research and Education Center, 3205 College Ave., Davie, FL 33314-7719, USA
| | - Ericka E Helmick
- Department of Entomology and Nematology, University of Florida-Fort Lauderdale Research and Education Center, 3205 College Ave., Davie, FL 33314-7719, USA
| | - Sonia C N Queiroz
- Laboratory of Residues and Contaminants, Embrapa Environment, Rodovia SP 340, km 127.5, Jaguariúna 13918-110, SP, Brazil
| | - Brian W Bahder
- Department of Entomology and Nematology, University of Florida-Fort Lauderdale Research and Education Center, 3205 College Ave., Davie, FL 33314-7719, USA
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13
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Dymond MK. A Membrane Biophysics Perspective on the Mechanism of Alcohol Toxicity. Chem Res Toxicol 2023. [PMID: 37186813 DOI: 10.1021/acs.chemrestox.3c00039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Motivations for understanding the underlying mechanisms of alcohol toxicity range from economical to toxicological and clinical. On the one hand, acute alcohol toxicity limits biofuel yields, and on the other hand, acute alcohol toxicity provides a vital defense mechanism to prevent the spread of disease. Herein the role that stored curvature elastic energy (SCE) in biological membranes might play in alcohol toxicity is discussed, for both short and long-chain alcohols. Structure-toxicity relationships for alcohols ranging from methanol to hexadecanol are collated, and estimates of alcohol toxicity per alcohol molecule in the cell membrane are made. The latter reveal a minimum toxicity value per molecule around butanol before alcohol toxicity per molecule increases to a maximum around decanol and subsequently decreases again. The impact of alcohol molecules on the lamellar to inverse hexagonal phase transition temperature (TH) is then presented and used as a metric to assess the impact of alcohol molecules on SCE. This approach suggests the nonmonotonic relationship between alcohol toxicity and chain length is consistent with SCE being a target of alcohol toxicity. Finally, in vivo evidence for SCE-driven adaptations to alcohol toxicity in the literature are discussed.
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Affiliation(s)
- Marcus K Dymond
- Chemistry Research and Enterprise Group, University of Brighton, Huxley Building, Lewes Road, Brighton BN2 4GJ, United Kingdom
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14
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Yu D, Wang W, Huo J, Zhuang Y, Chen Y, Du X. Study on molecular mechanism of volatiles variation during Bupleurum scorzonerifolium root development based on metabolome and transcriptome analysis. FRONTIERS IN PLANT SCIENCE 2023; 14:1159511. [PMID: 37035038 PMCID: PMC10079991 DOI: 10.3389/fpls.2023.1159511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 02/27/2023] [Indexed: 06/19/2023]
Abstract
Bupleurum scorzonerifolium Willd. is a medicinal herb. Its root has a high content of volatile oil (BSVO), which shows a variety of biological activities. Currently, BSVO in the injectable form is used for treating fever in humans and livestock. The yield and quality of volatile oils depends on the developmental stages of plants. However, the changes in BSVO yield and quality during root development in Bupleurum scorzonerifolium and the underlying molecular regulatory mechanisms remain unclear. This knowledge gap is limiting the improvement in the quality of BSVO. In the present study, B. scorzonerifolium root was collected at germinative, vegetative, florescence, fruiting and defoliating stages. The yield of BSVO, metabolic profile of volatile components and transcriptome of root samples at various developmental stages were comprehensively determined and compared. BSVO continuously accumulated from the germinative to fruiting stages, and its level slightly decreased from the fruiting to defoliating stages. A total of 82 volatile components were detected from B. scorzonerifolium root, of which 22 volatiles were identified as differentially accumulated metabolites (DAMs) during the root development. Of these volatiles, fatty acids and their derivatives accounted for the largest proportion. The contents of most major volatiles were highest at the fruiting stage. A large number of differentially expressed genes (DEGs) were detected during B. scorzonerifolium root development, of which 65 DEGs encoded various enzymes and transcription factors regulating the biosynthesis of fatty acids and their derivatives. In further analysis, 42 DEGs were identified to be significantly correlated with DAMs, and these DEGs may be the key genes for the biosynthesis of volatiles. To the best of our knowledge, this is the first study to comprehensively report the changes in the composition and content of volatiles and underlying mechanism during B. scorzonerifolium root development. This study provided important reference for future studies to determine the harvest time of B. scorzonerifolium roots and improve the quality of BSVO.
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Affiliation(s)
- Dan Yu
- Key Laboratory of Chinese Materia Medica, Ministry of Education, Pharmaceutical College, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Wenxue Wang
- Key Laboratory of Chinese Materia Medica, Ministry of Education, Pharmaceutical College, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Jinhai Huo
- Institute of Chinese Materia Medica, Heilongjiang Academy of Chinese Medicine Sciences, Harbin, China
| | - Yan Zhuang
- Institute of Chinese Materia Medica, Heilongjiang Academy of Chinese Medicine Sciences, Harbin, China
| | - Yiyang Chen
- Key Laboratory of Chinese Materia Medica, Ministry of Education, Pharmaceutical College, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Xiaowei Du
- Key Laboratory of Chinese Materia Medica, Ministry of Education, Pharmaceutical College, Heilongjiang University of Chinese Medicine, Harbin, China
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15
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Das S, Paul P, Dastidar DG, Chakraborty P, Chatterjee S, Sarkar S, Maiti D, Tribedi P. Piperine Exhibits Potential Antibiofilm Activity Against Pseudomonas aeruginosa by Accumulating Reactive Oxygen Species, Affecting Cell Surface Hydrophobicity and Quorum Sensing. Appl Biochem Biotechnol 2022; 195:3229-3256. [PMID: 36580259 DOI: 10.1007/s12010-022-04280-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2022] [Indexed: 12/30/2022]
Abstract
Gram-positive and Gram-negative bacteria often develop biofilm through different mechanisms in promoting pathogenicity. Hence, the antibiofilm molecule needs to be examined separately on both organisms to manage the biofilm threat. Since the antibiofilm activity of piperine against Staphylococcus aureus was already reported; here, we aimed to examine the antibiofilm activity of it against Pseudomonas aeruginosa. P. aeruginosa is an opportunistic Gram-negative pathogen that can cause several healthcare-associated infections by exploiting biofilm. Several experiments like crystal violet assay, estimation of total protein, measurement of extracellular polymeric substance, and microscopic analysis confirmed that lower concentrations (8 and 16 µg/mL) of piperine could inhibit the microbial biofilm formation considerably. Besides, it could also reduce the secretion of virulence factors from P. aeruginosa. Further investigation showed that the cell surface hydrophobicity and microbial motility of the test organism got reduced under the influence of piperine. Piperine exposure was found to increase the accumulation of reactive oxygen species (ROS) that resulted in the inhibition of biofilm formation. Furthermore, the molecular simulation studies suggested that piperine could affect the quorum sensing network of P. aeruginosa. Towards this direction, we noticed that piperine treatment could decrease the expression of the quorum sensing gene (lasI) that resulted in the inhibition of biofilm formation. Besides biofilm inhibition, piperine was also found to disintegrate the pre-existing biofilm of P. aeruginosa without showing any antimicrobial property to the test organism. Thus, piperine could be used for the sustainable protection of public-healthcare by compromising the biofilm assembly of P. aeruginosa.
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Affiliation(s)
- Sharmistha Das
- Department of Biotechnology, The Neotia University, Sarisha, West, Bengal-743368, India
| | - Payel Paul
- Department of Biotechnology, The Neotia University, Sarisha, West, Bengal-743368, India
| | - Debabrata Ghosh Dastidar
- Guru Nanak Institute of Pharmaceutical Science and Technology, 157/F Nilgunj Road, Panihati, Kolkata, West Bengal, 700114, India
| | - Poulomi Chakraborty
- Department of Biotechnology, The Neotia University, Sarisha, West, Bengal-743368, India
| | - Sudipta Chatterjee
- Department of Biotechnology, The Neotia University, Sarisha, West, Bengal-743368, India
| | - Sarita Sarkar
- Department of Biotechnology, The Neotia University, Sarisha, West, Bengal-743368, India
| | - Debasish Maiti
- Department of Human Physiology, Tripura University, Suryamaninagar, Agartala, Tripura, 799022, India
| | - Prosun Tribedi
- Department of Biotechnology, The Neotia University, Sarisha, West, Bengal-743368, India.
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16
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Wang X, Wang Q, Hu Y, Yin F, Liu X, Zhou D. Gastrointestinal Digestion and Microbial Hydrolysis of Alkyl Gallates: Potential Sustained Release of Gallic Acid. Foods 2022; 11:foods11233936. [PMID: 36496745 PMCID: PMC9737867 DOI: 10.3390/foods11233936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022] Open
Abstract
Phenolipids such as alkyl gallates (A-GAs) have been approved by the food industry as non-toxic antioxidant additives, which are also regarded as an emerging source of functional food ingredients. However, comprehensive understanding of their digestive absorption is needed. Thus, the models of live mice and anaerobic fermentation were used to clarify the distribution and microbial hydrolysis characteristics of A-GAs in the gastrointestinal tract. HPLC-UV results demonstrated that A-GAs could be hydrolyzed by intestinal lipases and gut microorganisms including Lactobacillus to produce free gallic acid (GA). Through regulating the chain length of the lipid part in A-GAs, the sustained and controllable release of the GA can be easily achieved. Furthermore, A-GAs were also able to reach the colon and the cecum, which would lead to potential gastrointestinal protective effects. Therefore, A-GAs may be applied as possible ingredient for functional foods.
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Affiliation(s)
- Xinmiao Wang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Qian Wang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Yuanyuan Hu
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China
- Development of Food Industry, Shenzhen University, Shenzhen 518060, China
| | - Fawen Yin
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
- Correspondence: ; Tel.: +86-0411-86323453
| | - Xiaoyang Liu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Dayong Zhou
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
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17
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Pais JP, Policarpo M, Pires D, Francisco AP, Madureira AM, Testa B, Anes E, Constantino L. Fluoroquinolone Derivatives in the Treatment of Mycobacterium tuberculosis Infection. Pharmaceuticals (Basel) 2022; 15:ph15101213. [PMID: 36297325 PMCID: PMC9609866 DOI: 10.3390/ph15101213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 12/01/2022] Open
Abstract
Tuberculosis (TB) is currently one of the leading causes of death due to infective agents, and the growing rate of multidrug-resistant tuberculosis (MDR TB) cases poses an emergent public health threat. Fluoroquinolones are commonly used in the treatment of both MDR TB and drug-sensitive tuberculosis patients who are intolerant to first-line antitubercular agents. Unfortunately, these drugs have mild side effects, relevant to the prolonged treatment regimens and diminished bioavailability due to binding of metal ions. Moreover, the resistance to fluoroquinolones is also on the rise, a characteristic of extensively drug-resistant TB (XDR TB). Here, we developed esters as prodrugs of the fluoroquinolones levofloxacin and ciprofloxacin, with long-chain fatty alcohols. Both the alcohols and the quinolone have previously shown antimycobacterial activity and the aim was to develop esters with improved lipophilicity and capable of delivering the free acid inside mycobacterial cells. The carboxylic acid group of fluoroquinolones is essential to the mode of action but is also responsible for many of its side effects and metal-chelating properties. The synthesis, stability in biological media, and antibacterial activity were evaluated, the latter not only against Mycobacterium tuberculosis but also against other clinically relevant bacterial species, since the parent compounds display a broad spectrum of activity. The biological results show a reduction in the antitubercular activity of the synthesized derivatives, probably due to deficient activation of the ester prodrug. Despite this, it was found that the derivatives exhibit bioactivity against other fluoroquinolone-resistant bacteria, indicating a different mode of action and suggesting that it may be worthwhile to research further modifications to the carboxylic acid group. This might lead to new compounds that are efficient against resistant strains. This idea that the compounds may act by a different mechanism of action was further supported by a brief computer investigation that demonstrated the potential lack of selectivity of the esters to the fluoroquinolone target.
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Affiliation(s)
- João Pedro Pais
- Research Institute for Medicines and Pharmaceutical Sciences (iMed.UL), Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Margarida Policarpo
- Research Institute for Medicines and Pharmaceutical Sciences (iMed.UL), Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - David Pires
- Research Institute for Medicines and Pharmaceutical Sciences (iMed.UL), Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Ana Paula Francisco
- Research Institute for Medicines and Pharmaceutical Sciences (iMed.UL), Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Faculty of Pharmacy, University of Lisbon, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Ana Margarida Madureira
- Research Institute for Medicines and Pharmaceutical Sciences (iMed.UL), Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Faculty of Pharmacy, University of Lisbon, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | | | - Elsa Anes
- Research Institute for Medicines and Pharmaceutical Sciences (iMed.UL), Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Faculty of Pharmacy, University of Lisbon, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Luís Constantino
- Research Institute for Medicines and Pharmaceutical Sciences (iMed.UL), Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Faculty of Pharmacy, University of Lisbon, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Correspondence: ; Tel.: +35-19-6548-8519
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Lipophilic Compounds and Antibacterial Activity of Opuntia ficus-indica Root Extracts from Algeria. Int J Mol Sci 2022; 23:ijms231911161. [PMID: 36232458 PMCID: PMC9569945 DOI: 10.3390/ijms231911161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/08/2022] [Accepted: 09/16/2022] [Indexed: 11/21/2022] Open
Abstract
The chemical composition, investigated by gas chromatography-mass spectrometry, and antibacterial activity of lipophilic extractives of three varieties of Opuntia ficus-indica roots from Algeria are reported in this paper for the first time. The results obtained revealed a total of 55 compounds, including fatty acids, sterols, monoglycerides and long chain aliphatic alcohols that were identified and quantified. β-Sitosterol was found as the major compound of the roots of the three varieties. Furthermore, considerable amounts of essential fatty acids (ω3, ω6, and ω9) such as oleic, linoleic, and linolenic acids were also identified. The green variety was the richest among the three studied varieties. The antibacterial activity, evaluated with disc diffusion method, revealed that lipophilic extracts were effective mainly against Gram-positive Staphylococcus aureus and methicillin-resistant Staphylococcus aureus (MRSA) (19~23 mm). Gram-negative strains mainly Pseudomonas aeruginosa gave an inhibition zone of 18 mm, which is considered high antibacterial activity. The minimal inhibitory concentrations of the tested bacteria revealed interesting values against the majority of bacteria tested: 75–100 µg mL−1 for Bacillus sp., 250–350 µg/mL for the two Staphylococcus strains, 550–600 µg mL−1 for E. coli, and 750–950 µg mL−1 obtained with Pseudomonas sp. This study allows us to conclude that the lipophilic fractions of cactus roots possess interesting phytochemicals such as steroids, some fatty acids and long chain alcohols that acted as antibiotic-like compounds countering pathogenic strains.
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Matsumoto A, Adachi H, Terashima I, Uesono Y. Escaping from the Cutoff Paradox by Accumulating Long-Chain Alcohols in the Cell Membrane. J Med Chem 2022; 65:10471-10480. [PMID: 35857416 DOI: 10.1021/acs.jmedchem.2c00629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The mechanism for the cutoff, an activity cliff at which long-chain alcohols lose their biological effects, has not been elucidated. Highly hydrophobic oleyl alcohol (C18:1) exists as a mixture of monomers and aggregated droplets in water. C18:1 did not inhibit the yeast growth but inhibited the growth of the slime mold without a cell wall. C18:1 exhibited toxicity to the yeast protoplast, which was enhanced by polyethylene glycol, a fusogen. Therefore, direct interactions of C18:1 with the membrane are crucial for the toxicity. The cutoff alcohols, C14 and C16, also exhibited strong toxicity obeying the Meyer-Overton correlation, in intact yeast cells whose membrane growth was suppressed in water. Taken together, the cutoff is avoidable by securing sufficient accumulation of the wall-permeable monomers in the membrane, which supports the lipid theory. It would be important to distinguish the effective drug structure localizing in the membrane and deal with the amount in the membrane.
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Affiliation(s)
- Atsushi Matsumoto
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.,Department of Biology, Faculty of Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hiroyuki Adachi
- Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Ichiro Terashima
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yukifumi Uesono
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Das MC, Samaddar S, Jawed JJ, Ghosh C, Acharjee S, Sandhu P, Das A, Daware AV, De UC, Majumdar S, Das Gupta SK, Akhter Y, Bhattacharjee S. Vitexin alters Staphylococcus aureus surface hydrophobicity to obstruct biofilm formation. Microbiol Res 2022; 263:127126. [PMID: 35914415 DOI: 10.1016/j.micres.2022.127126] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 03/21/2022] [Accepted: 07/10/2022] [Indexed: 10/17/2022]
Abstract
Cell Surface hydrophobicity is one of the determinant biophysical parameters of bacterial aggregation for being networked to form a biofilm. Phytoconstituent, like vitexin, has long been in use for their antibacterial effect. The present work demonstrates the role of vitexin in modulating Staphylococcus aureus surface hydrophobicity while aggregating to form biofilm and pathogenesis in a host. In planktonic form, vitexin shows minimum inhibitory concentration at 252 µg/ml against S. aureus. Sub-MIC doses of vitexin and antibiotics (26 µg/ml of vitexin, 55 µg/ml of azithromycin, and 2.5 µg/ml of gentamicin) were selected to treat S. aureus. Dead cell counts after treatment were studied through flow cytometry. As dead cell counts were minimal (<5 %), these doses were considered for all subsequent experiments. While studying aggregating cells, it was observed that vitexin reduces S. aureus surface hydrophobicity and membrane permeability at the sub-MIC dose of 26 µg/ml. The in silico binding analysis showed a higher binding affinity of vitexin with surface proteins (IcaA, DltA, and SasG) of S. aureus. Down-regulation of dltA and icaAB expression, along with the reduction in membrane potential with a sub-MIC dose of vitexin, explains reduced S. aureus surface hydrophobicity. Vitexin was found to interfere with S. aureus biofilm-associated protein biomass, EPS production, and swarming movement. Subsequently, the suppression of proteases production and down-regulation of icaAB and agrAC gene expression with a sub-MIC dose of vitexin explained the inhibition of S. aureus virulence in vitro. Besides, vitexin was also found to potentiate the antibiofilm activity of sub-MIC doses of gentamicin and azithromycin. Treatment with vitexin exhibits a protective response in S. aureus infected macrophages through modulation of expression of cytokines like IL-10 and IL-12p40 at protein and mRNA levels. Furthermore, CFU count and histological examination of infected mouse tissue (liver and spleen) justify the in vivo protective effect of vitexin from S. aureus biofilm-associated infection. From this study, it can be inferred that vitexin can reduce S. aureus surface hydrophobicity, leading to interference with aggregation at the time of biofilm formation and subsequent pathogenesis in a host.
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Affiliation(s)
- Manash C Das
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, Tripura 799022, India; Department of Medical Laboratory Technology, Women's Polytechnic, Hapania, Tripura 799130, India
| | - Sourabh Samaddar
- Department of Microbiology, Centenary Campus, Bose Institute, CIT Road, Kolkata 700054, India
| | - Junaid Jibran Jawed
- Department of Molecular Medicine, Centenary Campus, Bose Institute, CIT Road, Kolkata 700054, India
| | - Chinmoy Ghosh
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, Tripura 799022, India; Molecular Stress and Stem Cell Biology Group, School of Biotechnology, KIIT University, Bhubaneswar, Odissa 751024, India
| | - Shukdeb Acharjee
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, Tripura 799022, India
| | - Padmani Sandhu
- Centre for Computational Biology and Bioinformatics, School of Life Sciences, Central University of Himachal Pradesh, Shahpur, District-Kangra, Himachal Pradesh 176206, India
| | - Antu Das
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, Tripura 799022, India
| | - Akshay Vishnu Daware
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, Tripura 799022, India
| | - Utpal C De
- Department of Chemistry, Tripura University, Suryamaninagar, Tripura 799022, India
| | - Subrata Majumdar
- Department of Molecular Medicine, Centenary Campus, Bose Institute, CIT Road, Kolkata 700054, India
| | - Sujoy K Das Gupta
- Department of Microbiology, Centenary Campus, Bose Institute, CIT Road, Kolkata 700054, India
| | - Yusuf Akhter
- Department of Biotechnology, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, Uttar Pradesh, India
| | - Surajit Bhattacharjee
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, Tripura 799022, India.
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Maela MP, van der Walt H, Serepa-Dlamini MH. The Antibacterial, Antitumor Activities, and Bioactive Constituents’ Identification of Alectra sessiliflora Bacterial Endophytes. Front Microbiol 2022; 13:870821. [PMID: 35865925 PMCID: PMC9294510 DOI: 10.3389/fmicb.2022.870821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 06/02/2022] [Indexed: 11/13/2022] Open
Abstract
Due to increased antimicrobial resistance against current drugs, new alternatives are sought. Endophytic bacteria associated with medicinal plants are recognized as valuable sources of novel secondary metabolites possessing antimicrobial, antitumor, insecticidal, and antiviral activities. In this study, five bacterial endophytes were isolated and identified from the medicinal plant, Alectra sessiliflora, and their antibacterial and antitumor activities were investigated. In addition, the crude extracts of the endophytes were analyzed using gas chromatography (GC) coupled with time-of-flight mass spectrometry (TOF-MS). The identified bacterial endophytes belong to three genera viz Lysinibacillus, Peribacillus, and Bacillus, with the latter as the dominant genus with three species. Ethyl acetate extracts from the endophytes were used for antimicrobial activity against eleven pathogenic strains through minimum inhibitory concentration (MIC). The antitumor activity against the Hela cervical, Hek 293 kidney, and A549 lung carcinoma cells was determined by the MTS [3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxy-phenyl)-2-(4-sulfophenyl)-2H-tetrazolium] assay. Lysinibacillus sp. strain AS_1 exhibited broad antibacterial activity against the pathogenic strains with MIC values ranging from 4 to 8 mg/ml, while Bacillus sp. strain AS_3 displayed MIC of 0.25 mg/ml. Crude extracts of Lysinibacillus sp. strain AS_1, Peribacillus sp. strain AS_2, and Bacillus sp. strain AS_3 showed growth inhibition of more than 90% against all the cancer cell lines at a concentration of 1,000 μg/ml. Untargeted secondary metabolite profiling of the crude extracts revealed the presence of compounds with reported biological activity, such as antimicrobial, antioxidant, anti-inflammatory, antitumor, and antidiabetic properties. This study reported for the first time, bacterial endophytes associated with A. sessiliflora with antibacterial and antitumor activities.
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Affiliation(s)
- Mehabo Penistacia Maela
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | | | - Mahloro Hope Serepa-Dlamini
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
- *Correspondence: Mahloro Hope Serepa-Dlamini,
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22
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Zazouli S, Chigr M, Ramos PAB, Rosa D, Castro MM, Jouaiti A, Duarte MF, Santos SAO, Silvestre AJD. Chemical Profile of Lipophilic Fractions of Different Parts of Zizyphus lotus L. by GC-MS and Evaluation of Their Antiproliferative and Antibacterial Activities. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27020483. [PMID: 35056798 PMCID: PMC8778616 DOI: 10.3390/molecules27020483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/28/2021] [Accepted: 01/07/2022] [Indexed: 11/16/2022]
Abstract
Zizyphus lotus L. is a perennial shrub particularly used in Algerian folk medicine, but little is known concerning the lipophilic compounds in the most frequently used parts, namely, root bark, pulp, leaves and seeds, which are associated with health benefits. In this vein, the lipophilic fractions of these morphological parts of Z. lotus from Morocco were studied by gas chromatography-mass spectrometry (GC-MS), and their antiproliferative and antimicrobial activities were evaluated. GC-MS analysis allowed the identification and quantification of 99 lipophilic compounds, including fatty acids, long-chain aliphatic alcohols, pentacyclic triterpenic compounds, sterols, monoglycerides, aromatic compounds and other minor components. Lipophilic extracts of pulp, leaves and seeds were revealed to be mainly composed of fatty acids, representing 54.3-88.6% of the total compounds detected. The leaves and seeds were particularly rich in unsaturated fatty acids, namely, (9Z,12Z)-octadeca-9,12-dienoic acid (2431 mg kg-1 of dry weight) and (9Z)-octadec-9-enoic acid (6255 mg kg-1 of dry weight). In contrast, root bark contained a high content of pentacyclic triterpenic compounds, particularly betulinic acid, accounting for 9838 mg kg-1 of dry weight. Root bark extract showed promising antiproliferative activity against a triple-negative breast cancer cell line, MDA-MB-231, with a half-maximal inhibitory concentration (IC50) = 4.23 ± 0.18 µg mL-1 of extract. Leaf extract displayed interesting antimicrobial activity against Escherichia coli, methicillin-sensitive Staphylococcus aureus and Staphylococcus epidermis, presenting minimum inhibitory concentration (MIC) values from 1024 to 2048 µg mL-1 of extract. Our results demonstrate that Zizyphus lotus L. is a source of promising bioactive components, which can be exploited as natural ingredients in pharmaceutical formulations.
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Affiliation(s)
- Sofia Zazouli
- Laboratory of Sustainable Development, Faculty of Science and Technology, University Sultan Moulay Slimane, Beni-Mellal 23000, Morocco; (S.Z.); (A.J.)
- Laboratory of Bio-Organic an Analytical Chemistry, Faculty of Science and Technology, University Sultan Moulay Slimane, Beni-Mellal 23000, Morocco;
| | - Mohammed Chigr
- Laboratory of Bio-Organic an Analytical Chemistry, Faculty of Science and Technology, University Sultan Moulay Slimane, Beni-Mellal 23000, Morocco;
| | - Patrícia A. B. Ramos
- CICECO-Aveiro Institute of Materials, Department of Chemistry, Campus de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal; (P.A.B.R.); (A.J.D.S.)
- LAQV-REQUIMTE, Department of Chemistry, Campus de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Daniela Rosa
- Alentejo Biotechnology Center for Agriculture and Agro-Food (CEBAL), Polytechnic Institute of Beja (IPBeja), 7801-908 Beja, Portugal; (D.R.); (M.M.C.)
- Mediterranean Institute for Agriculture, Environment and Development—MED, CEBAL, 7081-908 Beja, Portugal
| | - Maria M. Castro
- Alentejo Biotechnology Center for Agriculture and Agro-Food (CEBAL), Polytechnic Institute of Beja (IPBeja), 7801-908 Beja, Portugal; (D.R.); (M.M.C.)
| | - Ahmed Jouaiti
- Laboratory of Sustainable Development, Faculty of Science and Technology, University Sultan Moulay Slimane, Beni-Mellal 23000, Morocco; (S.Z.); (A.J.)
| | - Maria F. Duarte
- Alentejo Biotechnology Center for Agriculture and Agro-Food (CEBAL), Polytechnic Institute of Beja (IPBeja), 7801-908 Beja, Portugal; (D.R.); (M.M.C.)
- Mediterranean Institute for Agriculture, Environment and Development—MED, CEBAL, 7081-908 Beja, Portugal
- Correspondence: (M.F.D.); (S.A.O.S.)
| | - Sónia A. O. Santos
- CICECO-Aveiro Institute of Materials, Department of Chemistry, Campus de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal; (P.A.B.R.); (A.J.D.S.)
- Correspondence: (M.F.D.); (S.A.O.S.)
| | - Armando J. D. Silvestre
- CICECO-Aveiro Institute of Materials, Department of Chemistry, Campus de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal; (P.A.B.R.); (A.J.D.S.)
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Das S, Paul P, Chatterjee S, Chakraborty P, Sarker RK, Das A, Maiti D, Tribedi P. Piperine exhibits promising antibiofilm activity against Staphylococcus aureus by accumulating reactive oxygen species (ROS). Arch Microbiol 2021; 204:59. [DOI: 10.1007/s00203-021-02642-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 10/23/2021] [Accepted: 11/04/2021] [Indexed: 11/28/2022]
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Cuminaldehyde exhibits potential antibiofilm activity against Pseudomonas aeruginosa involving reactive oxygen species (ROS) accumulation: a way forward towards sustainable biofilm management. 3 Biotech 2021; 11:485. [PMID: 34790509 DOI: 10.1007/s13205-021-03013-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 10/01/2021] [Indexed: 10/19/2022] Open
Abstract
Pseudomonas aeruginosa often causes various acute and chronic infections in humans exploiting biofilm. Molecules interfering with microbial biofilm formation could be explored for the sustainable management of infections linked to biofilm. Towards this direction, the antimicrobial and antibiofilm activity of cuminaldehyde, an active ingredient of the essential oil of Cuminum cyminum was tested against Pseudomonas aeruginosa. In this regard, the minimum inhibitory concentration (MIC) of cuminaldehyde was found to be 150 μg/mL against the test organism. Experiments such as crystal violet assay, estimation of total biofilm protein, fluorescence microscopy and measurement of extracellular polymeric substances (EPS) indicated that the sub-MIC doses (up to 60 µg/mL) of cuminaldehyde demonstrated considerable antibiofilm activity without showing any antimicrobial activity to the test organism. Moreover, cuminaldehyde treatment resulted in substantial accumulation of cellular reactive oxygen species (ROS) that led to the inhibition of microbial biofilm formation. To this end, the exposure of ascorbic acid was found to restore the biofilm-forming ability of the cuminaldehyde-treated cells. Besides, a noticeable reduction in proteolytic activity was also observed when the organism was treated with cuminaldehyde. Taken together, the results demonstrated that cuminaldehyde could be used as a promising molecule to inhibit the biofilm formation of Pseudomonas aeruginosa.
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Wang X, Chen K, Zhang X, Hu Y, Wang Z, Yin F, Liu X, Zhang J, Qin L, Zhou D. Effect of carbon chain length on the hydrolysis and transport characteristics of alkyl gallates in rat intestine. Food Funct 2021; 12:10581-10588. [PMID: 34614054 DOI: 10.1039/d1fo01732b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phenolipids such as alkyl gallates (A-GAs) have been approved by food industry as non-toxic antioxidant additives. However, their digestion and absorption mechanisms in the intestine have not yet been clarified. In this research, the hydrolysis and transport characteristics of A-GAs with fatty alcohols of various chain lengths (C1:0, C2:0, C3:0, C4:0, C8:0, C12:0 and C16:0) were estimated by the everted-rat-gut-sac model (ERGSM) for the first time. High-performance liquid chromatography measurements proved that measurable peaks corresponding to methyl gallate (G-C1:0), ethyl gallate (G-C2:0), propyl gallate (G-C3:0) and butyl gallate (G-C4:0) were discovered in the serosal fluids, which showed the short-chain alkyl gallates can cross the membrane in the form of esters. Besides, all A-GAs were hydrolyzed to GA in the mucosal solution, which contributed evidently to the transport of GA across the membrane of the small intestine. Meanwhile, the hydrolysis rate of A-GAs and transport rate of GA initially increased and then decreased with the chain length, exhibiting a maximum for octyl gallate (G-C8:0). In general, all A-GAs have the behavior of sustained-release. In consequence, the production of A-GAs should be an effective method to extend action time and further increases biological activities of GA.
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Affiliation(s)
- Xinmiao Wang
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Kefan Chen
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Xiumin Zhang
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Yuanyuan Hu
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Zixu Wang
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Fawen Yin
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China. .,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| | - Xiaoyang Liu
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China. .,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| | - Jianghua Zhang
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Lei Qin
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China. .,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| | - Dayong Zhou
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China. .,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
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Antifungal mechanism of 1-nonanol against Aspergillus flavus growth revealed by metabolomic analyses. Appl Microbiol Biotechnol 2021; 105:7871-7888. [PMID: 34550439 DOI: 10.1007/s00253-021-11581-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 09/05/2021] [Accepted: 09/08/2021] [Indexed: 12/27/2022]
Abstract
Chemical control of fungal spoilage of postharvest cereal grains is an important strategy for the management of grain storage. Here, the potential antifungal activity of 1-nonanol, a main component of cereal volatiles, against Aspergillus flavus was studied. The growth of A. flavus was completely inhibited by 0.11 and 0.20 μL/mL 1-nonanol at vapor and liquid contact phases, respectively. Metabolomic analysis identified 135 metabolites whose expression was significantly different between 1-nonanol-treated and untreated A. flavus. These metabolites were involved in the tricarboxylic acid cycle, amino acid biosynthesis, protein degradation and absorption, aminoacyl-tRNA biosynthesis, mineral absorption, and in interactions with ABC transporters. Biochemical validation confirmed the disruptive effect of 1-nonanol on A. flavus growth, as indicated by the leakage of intracellular electrolytes, decreased succinate dehydrogenase, mitochondrial dehydrogenase, and ATPase activity, and the accumulation of reactive oxygen species. We speculated that 1-nonanol could disrupt cell membrane integrity and mitochondrial function and might induce apoptosis of A. flavus mycelia. Simulated grain storage experiments showed that 1-nonanol vapor, at a concentration of 264 μL/L, completely inhibited A. flavus growth in wheat, corn, and paddy grain with an 18% moisture content. This study provides new insights into the antifungal mechanism of 1-nonanol against A. flavus, indicating that it has a promising potential as a bio-preservative to prevent fungal spoilage of postharvest grains. KEY POINTS: • 1-Nonanol showed higher antifungal activity against A. flavus. • The antifungal mechanisms of 1-nonanol against A. flavus were revealed. • 1-Nonanol could damage cell membrane integrity and mitochondrial function.
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Paul P, Chakraborty P, Sarker RK, Chatterjee A, Maiti D, Das A, Mandal S, Bhattacharjee S, Dastidar DG, Tribedi P. Tryptophan interferes with the quorum sensing and cell surface hydrophobicity of Staphylococcus aureus: a promising approach to inhibit the biofilm development. 3 Biotech 2021; 11:376. [PMID: 34367868 PMCID: PMC8295431 DOI: 10.1007/s13205-021-02924-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 07/13/2021] [Indexed: 12/14/2022] Open
Abstract
Staphylococcus aureus, a Gram-positive bacterium has been implicated in a plethora of human infections by virtue of its biofilm-forming ability. Inhibition in microbial biofilm formation has been found to be a promising approach towards compromising microbial pathogenesis. In this regard, various natural and synthetic molecules have been explored to attenuate microbial biofilm. In this study, the role of an amino acid, L-tryptophan was examined against the biofilm-forming ability of S. aureus. The compound did not execute any antimicrobial characteristics, instead, showed strong antibiofilm activity with the highest biofilm inhibition at a concentration of 50 µg/mL. Towards understanding the underlying mechanism of the same, efforts were given to examine whether tryptophan could inhibit biofilm formation by interfering with the quorum-sensing property of S. aureus. A molecular docking analysis revealed an efficient binding between the quorum-sensing protein, AgrA, and tryptophan. Moreover, the expression of the quorum-sensing gene (agrA) got significantly reduced under the influence of the test compound. These results indicated that tryptophan could interfere with the quorum-sensing property of the organism thereby inhibiting its biofilm formation. Further study revealed that tryptophan could also reduce the cell surface hydrophobicity of S. aureus by downregulating the expression of dltA. Moreover, the tested concentrations of tryptophan did not show any significant cytotoxicity. Hence, tryptophan could be recommended as a potential antibiofilm agent to manage the biofilm-associated infections caused by S. aureus. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-021-02924-3.
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Affiliation(s)
- Payel Paul
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal 743368 India
| | - Poulomi Chakraborty
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal 743368 India
| | - Ranojit K. Sarker
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal 743368 India
| | - Ahana Chatterjee
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal 743368 India
| | - Debasish Maiti
- Department of Human Physiology, Tripura University, Suryamaninagar, Agartala, Tripura 799022 India
| | - Amlan Das
- Department of Chemistry, NIT Sikkim, Ravangla Campus, Barfung Block, Ravangla, Sikkim 737139 India
| | - Sukhendu Mandal
- Department of Microbiology, University of Calcutta, West Bengal, 700019 India
| | - Surajit Bhattacharjee
- Department of Molecular Biology and Bioinformatics, Tripura University, Suryamaninagar, Agartala, Tripura 799022 India
| | - Debabrata Ghosh Dastidar
- Guru Nanak Institute of Pharmaceutical Science and Technology, 157/F Nilgunj Road, Panihati, Kolkata, West Bengal 700114 India
| | - Prosun Tribedi
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal 743368 India
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Ortiz-Ardila AE, Díez B, Celis C, Jenicek P, Labatut R. Microaerobic conditions in anaerobic sludge promote changes in bacterial composition favouring biodegradation of polymeric siloxanes. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2021; 23:1182-1197. [PMID: 34302159 DOI: 10.1039/d1em00143d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Volatile organic silicon compounds (VOSiC) are harmful pollutants to the biota and ecological dynamics as well as biogas-based energy conversion systems. However, there is a lack of understanding regarding the source of VOSiCs in biogas, especially arising from the biochemical conversion of siloxane polymers such as polydimethylsiloxanes (PDMS). The biodegradation of PDMS was evaluated under anaerobic/microaerobic conditions (PO2 = 0, 1, 3, 5%), using wastewater treatment plant (WWTP) sludge as an inoculum and PDMS as a co-substrate (0, 50, 100, 500 ppm). On average, strictly anaerobic treatments produced significantly less methane than the 3 and 5% microaerated ones, which show the highest PMDS biodegradation at 50 ppm. Thauera sp. and Rhodococcus sp. related phylotypes were identified as the most abundant bacterial groups in microaerated treatments, and siloxane-related molecules were identified as remnants of PDMS catabolism. Our study demonstrates that microaeration promotes changes to the native bacterial community which favour the biological degradation of PDMS. This confirms that the presence of VOSiC (e.g., D4-D6) in biogas is not only due to its direct input in wastewaters, but also to the PDMS microbial catabolism. Microaerobic conditions enhance both PDMS and (subsequent) VOSiC degradation in the liquid phase, increasing the concentrations of D4 and D5 in biogas, and the production of less toxic siloxane-based derivatives in the liquid phase. This study suggests that microaeration of the anaerobic sludge can significantly decrease the concentration of PDMSs in the WWTP effluent. However, for WWTPs to become effective barriers for the emission of these ecotoxic contaminants to the environment, such a strategy needs to be coupled with an efficient biodegradation of VOSiCs from the biogas.
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Affiliation(s)
- A E Ortiz-Ardila
- Department of Hydraulic and Environmental Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile.
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Paul P, Das S, Chatterjee S, Shukla A, Chakraborty P, Sarkar S, Maiti D, Das A, Tribedi P. 1,4-Naphthoquinone disintegrates the pre-existing biofilm of Staphylococcus aureus by accumulating reactive oxygen species. Arch Microbiol 2021; 203:4981-4992. [PMID: 34272991 DOI: 10.1007/s00203-021-02485-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/07/2021] [Accepted: 07/08/2021] [Indexed: 12/01/2022]
Abstract
Staphylococcus aureus causes several nosocomial and community-acquired infections in human host involving biofilm. Thus, strategies need to be explored to curb biofilm threats by either inhibiting the formation of biofilm or disintegrating the pre-existing biofilm. Towards this direction, we had already revealed the biofilm inhibiting properties of 1,4-naphthoquinone against S. aureus. In this study, we have investigated whether this compound can act on pre-existing biofilm. Hence, biofilm of S. aureus was developed first and challenged further with 1,4-naphthoquinone. Experiments such as crystal violet assay, fluorescence microscopy, and estimation of total biofilm protein were performed to confirm the biofilm disintegration properties of 1,4-naphthoquinone. The disintegration of pre-existing biofilm could be attributed to the generation of reactive oxygen species (ROS). To investigate further, we observed that extracellular DNA (eDNA) was found to play an important role in holding the biofilm network as DNaseI treatment could cause an efficient disintegration of the same. To examine the effect of ROS on the eDNA, we exposed pre-existing biofilm to either 1,4-naphthoquinone or a combination of both 1,4-naphthoquinone and ascorbic acid for different length of time. Post-incubation, ROS generation and the amount of eDNA associated with the biofilm were determined wherein an inversely proportional relationship was observed between them. The result indicated that with the increase of ROS generation, the amount of eDNA associated with biofilm got decreased substantially. Thus, the results indicated that the generation of ROS could degrade the eDNA thereby compromising the integrity of biofilm which lead to the disintegration of pre-existing biofilm.
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Affiliation(s)
- Payel Paul
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, 743368, West Bengal, India
| | - Sharmistha Das
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, 743368, West Bengal, India
| | - Sudipta Chatterjee
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, 743368, West Bengal, India
| | - Aditya Shukla
- Department of Microbiology, University of Calcutta, 35 Ballygunge Circular Road, Calcutta, 700019, India
| | - Poulomi Chakraborty
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, 743368, West Bengal, India
| | - Sarita Sarkar
- Division of Molecular Medicine, Bose Institute, P-1/12, CIT Road Scheme VIIM, Calcutta, 700 054, India
| | - Debasish Maiti
- Department of Human Physiology, Tripura University, Agartala, Tripura, India
| | - Amlan Das
- National Institute of Biomedical Genomics, Kalyani, 741251, West Bengal, India
| | - Prosun Tribedi
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, 743368, West Bengal, India.
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Devi TS, Vijay K, Vidhyavathi RM, Kumar P, Govarthanan M, Kavitha T. Antifungal activity and molecular docking of phenol, 2,4-bis(1,1-dimethylethyl) produced by plant growth-promoting actinobacterium Kutzneria sp. strain TSII from mangrove sediments. Arch Microbiol 2021; 203:4051-4064. [PMID: 34046705 DOI: 10.1007/s00203-021-02397-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/14/2021] [Accepted: 05/20/2021] [Indexed: 10/21/2022]
Abstract
The present study reveals the plant growth-promoting (PGP) potentials and characterizes the antifungal metabolites of Kutzneria sp. strain TSII isolated from mangrove sediment soil through in vitro and in silico studies. In this study, Kutzneria sp. strain TSII was screened for PGP activities and the antifungal activities against Pithomyces atro-olivaceous, a leaf spot-associated pathogen in groundnut plants. The ethyl acetate extract of Kutzneria sp. strain TSII was purified using column chromatography, and the presence of various antimicrobial compounds was studied by gas chromatography-mass spectrometry (GC-MS) analysis. In silico modeling and docking were carried out to evaluate the antifungal potent of bioactive compound. Kutzneria sp. strain TSII produced proteases, phosphatases, ammonia, siderophores, cellulases, indole acetic acid (IAA), lipases, and amylases, indicating its ability to enhance the growth of plants. The ethyl acetate extract of Kutzneria sp strain TSII was found to be a potent inhibitor of fungal mycelial growth in the potato dextrose agar (PDA) plates. The GC-MS spectral study showed 24 antimicrobial compounds belonging to five chemical groups: phenolics, phthalates, fatty acid methyl esters (FAME), spiro, and fatty alcohols. In silico docking studies showed that phenol, 2,4-bis(1,1-dimethylethyl)-effectively attaches with the active site of mitochondrial F1F0 Adenosine triphosphate synthase enzymes of Pithomyces atro-olivaceous. Hence, it is clear that these antifungal compounds shall be formulated shortly to treat many plant fungal diseases in an eco-friendly manner.
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Affiliation(s)
- Thangarasu Suganya Devi
- Department of Microbiology, Science Campus, Alagappa University, Karaikudi, Tamilnadu, India
| | - Karuppiah Vijay
- Department of Microbiology, Science Campus, Alagappa University, Karaikudi, Tamilnadu, India
| | - R M Vidhyavathi
- Department of Bioinformatics Science Campus, Alagappa University, Karaikudi, Tamilnadu, India
| | - Ponnuchamy Kumar
- Department of Animal Health and Management, Science Campus, Alagappa University, Karaikudi, Tamilnadu, India
| | - Muthusamy Govarthanan
- Department of Environmental Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Thangavel Kavitha
- Department of Microbiology, Science Campus, Alagappa University, Karaikudi, Tamilnadu, India.
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Antimicrobials from Medicinal Plants: An Emergent Strategy to Control Oral Biofilms. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11094020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Oral microbial biofilms, directly related to oral diseases, particularly caries and periodontitis, exhibit virulence factors that include acidification of the oral microenvironment and the formation of biofilm enriched with exopolysaccharides, characteristics and common mechanisms that, ultimately, justify the increase in antibiotics resistance. In this line, the search for natural products, mainly obtained through plants, and derived compounds with bioactive potential, endorse unique biological properties in the prevention of colonization, adhesion, and growth of oral bacteria. The present review aims to provide a critical and comprehensive view of the in vitro antibiofilm activity of various medicinal plants, revealing numerous species with antimicrobial properties, among which, twenty-four with biofilm inhibition/reduction percentages greater than 95%. In particular, the essential oils of Cymbopogon citratus (DC.) Stapf and Lippia alba (Mill.) seem to be the most promising in fighting microbial biofilm in Streptococcus mutans, given their high capacity to reduce biofilm at low concentrations.
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GC-MS analysis and molecular docking of bioactive compounds of Camellia sinensis and Camellia assamica. Arch Microbiol 2021; 203:2501-2510. [PMID: 33677633 DOI: 10.1007/s00203-021-02209-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/22/2020] [Accepted: 02/09/2021] [Indexed: 10/22/2022]
Abstract
The methanol extract of Camellia sinensis (MES) and acetone extract of Camellia assamica (AEA) were subjected to the thin layer chromatography to separate the bioactive compounds. The antimicrobial activity of all the fractions was carried out against pathogenic microorganisms by the agar-well diffusion method. The most effective bioactive fraction of each plant species was analysed by GC-MS. Fraction L of methanol extract of C. sinensis (MES) and fraction 5 of acetone extract of C. assamica (AEA) were found very effective against selected pathogenic strains. GC-MS analysis of this fraction showed the presence of n-heptadecanol-1 (68.63%) in MES and 2',6'dihydroxyacetophenone, bis(trimethylsilyl) (17.58%) in AEA with the highest area. The compounds n-heptadecanol-1 and 2',6'dihydroxyacetophenone, bis(trimethylsilyl) ether were used for docking to analyse its therapeutic potential. The ligand compound n-heptadecanol-1 (HEP) from MES of C. sinensis and 2',6'dihydroxyacetophenone, bis(trimethylsilyl) ether from AEA of C. assamica were docked with the target protein dihydropteoate synthase (DHPS) active sites of Escherichia coli and Staphylococcus aureus active sites via Auto Dock Vina, thereby forecasting the finest binding position of ligands. AutoDock Vina docked results revealed the involvement of binding energy for the establishment of the protein-ligand structure complex, besides generating an interpretation of all apparent molecular interactions accountable for its activity. Further, the protein-ligand complex of MES, EcDHPS + HEP and SaDHPS + HEP exhibiting the best binding affinity were - 4.8 kcal/mol and - 3.6 kcal/mol. The protein-ligand complex of AEA, i.e., EcDHPS + DHA and SaDHPS + DHA exhibited the best binding affinity of - 4.8 kcal/mol and - 4.8 kcal/mol.
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Brugnera MF, Miyata M, Zocolo GJ, Gonçalves Tessaro LL, Fujimura Leite CQ, Boldrin Zanoni MV. A promising technology based on photoelectrocatalysis against Mycobacterium tuberculosis in water disinfection. ENVIRONMENTAL TECHNOLOGY 2021; 42:743-752. [PMID: 31311444 DOI: 10.1080/09593330.2019.1645213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Mycobacterium tuberculosis is highly infectious, persistent and has been detected in more than one quarter of the world's population. It is notoriously resistant to sterilization and disinfection procedures, largely due to an unusual hydrophobic cell wall and effective defense mechanisms against oxidative stress. This work shows an effective method to reduce M. tuberculosis quantity in water by using Ti/TiO2 nanotubes electrodes bare and coated with Ag nanoparticles by using photoelectrocatalytic oxidation process. The results have indicated 99.999% of inactivation of a solution spiked with standard and resistant strains of 1×104 CFU mL-1 M. tuberculosis after 5 min of treatment at Ti/TiO2 photoanode in 0.05 mol L-1 Na2SO4 (pH 6) under applied potential of + 1.5 V versus Ag/AgCl and UV irradiation. The mycobacteria degradation was monitored by dissolved total organic carbon (TOC) removal, carbohydrate release, chromatography coupled to mass spectroscopy measurements and it is slightly superior to photocatalysis and photolysis processes. All the results corroborated with the complete inactivation and degradation of the byproducts generated during cell lysis.
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Affiliation(s)
| | - Marcelo Miyata
- Department of Biological Science, Faculty of Pharmaceutical Science of Araraquara, UNESP, Araraquara, Brazil
| | - Guilherme Julião Zocolo
- Department of Analytical Chemistry, Institute of Chemistry of Araraquara, UNESP, Araraquara, Brazil
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Sarkar S, Tribedi P, Bhadra K. Structure-activity insights of harmine targeting DNA, ROS inducing cytotoxicity with PARP mediated apoptosis against cervical cancer, anti-biofilm formation and in vivo therapeutic study. J Biomol Struct Dyn 2021; 40:5880-5902. [PMID: 33480316 DOI: 10.1080/07391102.2021.1874533] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Harmine exhibits pH dependent structural equilibrium and possesses numerous biological and pharmacological activities. Mode and mechanism of DNA binding and its cytotoxicity were studied by multiple spectroscopic, calorimetric, molecular docking and in vitro apoptotic as well as in vivo biochemical and histological studies. It exists as cationic (structure I) and decationic form (structure II) in the pH range 3.0-7.8 and 8.5-12.4, respectively, with a pKa of 8.0. Structure I at pH 6.8 binds strongly to DNA with a cooperative mode of binding of Kiω 1.03 × 106 M-1and stoichiometry of 5.0 nucleotide phosphates. Structure I stabilized DNA by 10 °C, showed85%quenching of fluorescence intensity, perturbation in circular dichroism, partial intercalation and enthalpy driven exothermic binding. While, structure II at pH 8.5 has very weak interaction with CT DNA. Cytotoxic potencies of structure I was tested on four different cancer cell lines along with normal embryonic cell. It showed maximum cytotoxicity with GI50of 20 µM, against HeLa causing several apoptotic induction abilities. Harmine exhibited G2M arrest with ROS induced effective role in PARP mediated apoptosis as well as anti-inflammatory action on HeLa cells. Harmine further presented MIC and antibiofilm activity against Staphylococcus aureus in presence of <160 and 30 µg/ml, respectively. Mice with post harmine treatment (30 mg/kg b.w., I.P.) showed maximum recovery from damaged to near normal architecture of cervical epithelial cells. This study may be of prospective use in a framework to design novel beta carboline compounds for improved therapeutic applications in future against cervical cancer. HighlightsHarmine exists in structure I and structure II forms in the pH 6.8 and 8.5with a pKa of 8.0.Structure I at pH 6.8 binds strongly to DNA compared to structure II.Structure I showed maximum cytotoxicity with GI50 of 20 µM against HeLa.ROS mediated cytotoxicitywithG2M arrest with PARP mediated apoptosis was studied.Harmine (30µg/ml) exhibited antibiofilm activity against Staphylococcus aureus.Post harmine dose (30 mg/kg b.w., I.P.) in mice showed recovery of cervical epithelial cells.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sarita Sarkar
- Department of Zoology, University of Kalyani, Nadia, West Bengal, India
| | - Prosun Tribedi
- Department of Biotechnology, The Neotia University, Sarisha, West Bengal, India
| | - Kakali Bhadra
- Department of Zoology, University of Kalyani, Nadia, West Bengal, India
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Chakraborty P, Paul P, Kumari M, Bhattacharjee S, Singh M, Maiti D, Dastidar DG, Akhter Y, Kundu T, Das A, Tribedi P. Attenuation of Pseudomonas aeruginosa biofilm by thymoquinone: an individual and combinatorial study with tetrazine-capped silver nanoparticles and tryptophan. Folia Microbiol (Praha) 2021; 66:255-271. [PMID: 33411249 DOI: 10.1007/s12223-020-00841-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 11/27/2020] [Indexed: 02/06/2023]
Abstract
Microbial biofilm indicates a cluster of microorganisms having the capability to display drug resistance property, thereby increasing its proficiency in spreading diseases. In the present study, the antibiofilm potential of thymoquinone, a black seed-producing natural molecule, was contemplated against the biofilm formation by Pseudomonas aeruginosa. Substantial antimicrobial activity was exhibited by thymoquinone against the test organism wherein the minimum inhibitory concentration of the compound was found to be 20 μg/mL. Thereafter, an array of experiments (crystal violet staining, protein count, and microscopic observation, etc.) were carried out by considering the sub-MIC doses of thymoquinone (5 and 10 μg/mL), each of which confirmed the biofilm attenuating capacity of thymoquinone. However, these concentrations did not show any antimicrobial activity. Further explorations on understanding the underlying mechanism of the same revealed that thymoquinone accumulated reactive oxygen species (ROS) and also inhibited the expression of the quorum sensing gene (lasI) in Pseudomonas aeruginosa. Furthermore, by taking up a combinatorial approach with two other reported antibiofilm agents (tetrazine-capped silver nanoparticles and tryptophan), the antibiofilm efficiency of thymoquinone was expanded. In this regard, the highest antibiofilm activity was observed when thymoquinone, tryptophan, and tetrazine-capped silver nanoparticles were applied together against Pseudomonas aeruginosa. These combinatorial applications of antibiofilm molecules were found to accumulate ROS in cells that resulted in the inhibition of biofilm formation. Thus, the combinatorial study of these antibiofilm molecules could be applied to control biofilm threats as the tested antibiofilm molecules alone or in combinations showed negligible or very little cytotoxicity.
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Affiliation(s)
- Poulomi Chakraborty
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Payel Paul
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Monika Kumari
- Centre for Computational Biology and Bioinformatics, Central University of Himachal Pradesh, Shahpur, Kangra, Himachal Pradesh, 176206, India
| | - Surajit Bhattacharjee
- Department of Molecular Biology and Bioinformatics, Tripura University, Suryamaninagar, Agartala, Tripura, 799022, India
| | - Mukesh Singh
- Department of Biotechnology, Haldia Institute of Technology, ICARE Complex, HIT Campus, PO-HIT, Dist. Purba Medinipur, Haldia, West Bengal, 721657, India
| | - Debasish Maiti
- Department of Human Physiology, Tripura University, Suryamaninagar, Agartala, Tripura, 799022, India
| | - Debabrata Ghosh Dastidar
- Guru Nanak Institute of Pharmaceutical Science and Technology, 157/F Nilgunj Road, Panihati, Kolkata, 700114, India
| | - Yusuf Akhter
- Department of Biotechnology, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, Uttar Pradesh, 226025, India
| | - Taraknath Kundu
- Department of Chemistry, NIT Sikkim, Ravangla Campus, Barfung Block, Ravangla, Sikkim, 737139, India
| | - Amlan Das
- Department of Biotechnology, NIT Sikkim, Ravangla Campus, Barfung Block, Ravangla, Sikkim, 737139, India.
| | - Prosun Tribedi
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
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Morphological transition of M. tuberculosis and modulation of intestinal permeation by food grade cationic nanoemulsion: In vitro-ex vivo-in silico GastroPlus™ studies. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101971] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Paul P, Chakraborty P, Chatterjee A, Sarker RK, Dastidar DG, Kundu T, Sarkar N, Das A, Tribedi P. 1,4-Naphthoquinone accumulates reactive oxygen species in Staphylococcus aureus: a promising approach towards effective management of biofilm threat. Arch Microbiol 2020; 203:1183-1193. [PMID: 33230594 DOI: 10.1007/s00203-020-02117-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 10/28/2020] [Accepted: 11/08/2020] [Indexed: 12/13/2022]
Abstract
Staphylococcus aureus, a Gram-positive opportunistic microorganism, promotes pathogenicity in the human host through biofilm formation. Microorganisms associated with biofilm often exhibit drug-resistance property that poses a major threat to public healthcare. Thus, the exploration of new therapeutic approaches is the need of the hour to manage biofilm-borne infections. In the present study, efforts are put together to test the antimicrobial as well as antibiofilm activity of 1,4-naphthoquinone against Staphylococcus aureus. The result showed that the minimum bactericidal concentration (MBC) of this compound was found to be 100 µg/mL against Staphylococcus aureus. In this regard, an array of experiments (crystal violet, biofilm protein measurement, and microscopic analysis) related to biofilm assay were conducted with the sub-MBC concentrations (1/20 and 1/10 MBC) of 1,4-naphthoquinone. All the results of biofilm assay demonstrated that these tested concentrations (1/20 and 1/10 MBC) of the compound (1,4-naphthoquinone) showed a significant reduction in biofilm development by Staphylococcus aureus. Moreover, the tested concentrations (1/20 and 1/10 MBC) of the compound (1,4-naphthoquinone) were able to reduce the microbial motility of Staphylococcus aureus that might affect the development of biofilm. Further studies revealed that the treatment of 1,4-naphthoquinone to the organism was found to increase the cellular accumulation of reactive oxygen species (ROS) that resulted in the inhibition of biofilm formation by Staphylococcus aureus. Hence, it can be concluded that 1,4-naphthoquinone might be considered as a promising compound towards biofilm inhibition caused by Staphylococcus aureus.
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Affiliation(s)
- Payel Paul
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Poulomi Chakraborty
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Ahana Chatterjee
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Ranojit K Sarker
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Debabrata Ghosh Dastidar
- Guru Nanak Institute of Pharmaceutical Science and Technology, 157/F Nilgunj Road, Panihati, Kolkata, West Bengal, 700114, India
| | - Taraknath Kundu
- Department of Chemistry, NIT Sikkim, Ravangla Campus, Barfung Block, Ravangla, Sikkim, 737139, India
| | - Niloy Sarkar
- School of Life Sciences, The Neotia University, Sarisha, West Bengal, 743368, India
| | - Amlan Das
- Department of Chemistry, NIT Sikkim, Ravangla Campus, Barfung Block, Ravangla, Sikkim, 737139, India.
| | - Prosun Tribedi
- Microbial Ecology Laboratory, Department of Biotechnology, The Neotia University, Sarisha, West Bengal, 743368, India.
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Njeru SN, Muema JM. Antimicrobial activity, phytochemical characterization and gas chromatography-mass spectrometry analysis of Aspilia pluriseta Schweinf. extracts. Heliyon 2020; 6:e05195. [PMID: 33083626 PMCID: PMC7551365 DOI: 10.1016/j.heliyon.2020.e05195] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 10/03/2020] [Accepted: 10/05/2020] [Indexed: 01/17/2023] Open
Abstract
Aspilia pluriseta is associated with various bioactivities, although with limited scientific justification. In this study, we evaluated the antimicrobial activity, and characterized the phytochemicals of root extracts of A. pluriseta aimed at validating its therapeutic potential. We used BACTEC MGIT™ 960 system to test for antitubercular activity, disc-diffusion together with the microdilution method to evaluate antimicrobial activities and qualitative phytochemical tests together with gas chromatography-mass spectrometry (GC-MS) analysis to determine the phytochemicals that associated with A. pluriseta extracts activity. We show that methanolic crude extract (at 1 g/mL) had high Mycobacterium tuberculosis (MTB) inhibitory activity (0 growth unit) and considerable potency against Escherichia coli (11.7 mm), Staphylococcus aureus (9.0 mm), and Candida albicans (7.7 mm). All the extract fractions exerted remarkable antimycobacterial activities with minimum inhibitory activity of between 6.26 – 25 μg/mL. The highest antimicrobial activity of petroleum ether and dichloromethane fraction was against E. coli at inhibition zone diameters of 8.3 mm, and 8.0 mm, respectively, while ethyl acetate fraction was against S. aureus with an inhibition zone of 8.7 mm. Methanolic fraction exhibited broad-spectrum activity against 87.5% of the tested microbes (inhibition zones 6.3–8.3 mm). Furthermore, we qualitatively detected terpenoids, alkaloids, and phenolics such as flavonoids, and anthraquinones in extract fractions. GC-MS analysis detected an abundance of fatty acid esters, 2-hydroxy-1-(hydroxymethyl) ethyl ester-hexadecanoic acid, and 2,3-dihydroxy propyl ester-octadecanoic acid and four alkanes. Taken together, we show that A. pluriseta extract fractions (especially ethyl acetate and methanolic fractions) have strong selective antitubercular activity, and thus, we scientifically validate the use of A. pluriseta as a potential source for the discovery of novel antitubercular agents.
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Affiliation(s)
- Sospeter N Njeru
- Department of Biochemistry, School of Health Sciences, Kisii University, PO Box 408-40200, Kisii, Kenya
| | - Jackson M Muema
- Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology (JKUAT), PO Box 62000-00200, Nairobi, Kenya
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Molecular Docking and Chemical Analysis of Alcohol Compounds (C16-C20) Bound to InhA Receptors as Mycobactericidal Candidates. JURNAL KIMIA SAINS DAN APLIKASI 2020. [DOI: 10.14710/jksa.23.5.135-141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Tuberculosis (TB) is an infectious disease caused by a bacterium called Mycobacterium tuberculosis. TB infection spreads through the air and is more likely when using inappropriate disinfectants in medical and laboratory equipment related to TB research. Appropriate disinfectants used for laboratory equipment can reduce the risk of TB disease transmission. Alcohol compound is a common disinfectant with broad-spectrum activity against microbes, viruses, and fungi. Molecular Docking can be applied to support virtual receptor-ligand screening in finding the right mycobactericidal agent as a disinfectant candidate from the alcohol group. Based on docking analysis, octadecanol (C18) has potential as a mycobactericidal agent with InhA as its specific receptor. Gibbs (ΔG) free energy obtained by octadecanol (C18) and InhA is -4.9 kcal/mol.
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Bacteria Affect Plant-Mite Interactions Via Altered Scent Emissions. J Chem Ecol 2020; 46:782-792. [DOI: 10.1007/s10886-020-01147-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 12/18/2019] [Accepted: 01/08/2020] [Indexed: 12/16/2022]
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Ghosh C, Bhowmik J, Ghosh R, Das MC, Sandhu P, Kumari M, Acharjee S, Daware AV, Akhter Y, Banerjee B, De UC, Bhattacharjee S. The anti-biofilm potential of triterpenoids isolated from Sarcochlamys pulcherrima (Roxb.) Gaud. Microb Pathog 2019; 139:103901. [PMID: 31790796 DOI: 10.1016/j.micpath.2019.103901] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 11/23/2019] [Accepted: 11/28/2019] [Indexed: 10/25/2022]
Abstract
Formation of biofilm is the major cause of Pseudomonas aeruginosa associated pathological manifestations in the urinary tract, respiratory system, gastrointestinal tract, skin, soft tissues etc. Triterpenoid group of compounds have shown their potential in reducing planktonic and biofilm form of bacteria. Sarcochlamys pulcherrima (Roxb.) Gaud. is an ethnomedicinal plant traditionally used for its anti-microbial and anti-inflammatory property. In the present study two triterpenoids, have been isolated from this plant, characterised and evaluated for their antibacterial and antibiofilm potential against P. aeruginosa. Compounds were characterised as 2α, 3β, 19α-trihydroxy-urs-12-ene-28-oic acid (Tormentic acid) and 2α, 3β, 23-trihydroxyurs-12-ene-28-oic acid (23-hydroxycorosolic acid) through spectroscopic studies viz. infrared (IR), nuclear magnetic resonance (NMR) and mass spectroscopy (MS). Depolarization of bacterial membrane and zone of inhibition studies revealed that both the compounds inhibited the growth of planktonic bacteria. Compounds were also found to inhibit the formation of P. aeruginosa biofilm. Inhibition of biofilm found to be mediated through suppressed secretion of pyoverdin, protease and swarming motility of P. aeruginosa. Gene expression study, in silico binding analysis, in vivo bacterial load and tissue histology observations also supported the antibiofilm activity of both the compounds. In vitro and in vivo study showed that both compounds were non-toxic. The study has explored the antibacterial and antibiofilm effect of two triterpenes isolated for the first time from S. pulcherrima.
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Affiliation(s)
- Chinmoy Ghosh
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, 799022, Tripura, India; Molecular Stress and Stem Cell Biology Lab, School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, 751024, Odisha, India
| | - Joyanta Bhowmik
- Department of Chemistry, Tripura University, Suryamaninagar, 799022, Tripura, India
| | - Ranjit Ghosh
- Department of Chemistry, Tripura University, Suryamaninagar, 799022, Tripura, India
| | - Manash C Das
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, 799022, Tripura, India
| | - Padmani Sandhu
- Centre for Computational Biology and Bioinformatics, School of Life Sciences, Central University of Himachal Pradesh, Shahpur, District-Kangra, Himachal Pradesh, 176206, India
| | - Monika Kumari
- Centre for Computational Biology and Bioinformatics, School of Life Sciences, Central University of Himachal Pradesh, Shahpur, District-Kangra, Himachal Pradesh, 176206, India
| | - Shukdeb Acharjee
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, 799022, Tripura, India
| | - Akshay Vishnu Daware
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, 799022, Tripura, India
| | - Yusuf Akhter
- Department of Biotechnology, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, Uttar Pradesh, 226025, India
| | - Birendranath Banerjee
- Molecular Stress and Stem Cell Biology Lab, School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar, 751024, Odisha, India
| | - Utpal Chandra De
- Department of Chemistry, Tripura University, Suryamaninagar, 799022, Tripura, India.
| | - Surajit Bhattacharjee
- Department of Molecular Biology & Bioinformatics, Tripura University, Suryamaninagar, 799022, Tripura, India.
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Inhibition of biofilm formation of Pseudomonas aeruginosa by caffeine: a potential approach for sustainable management of biofilm. Arch Microbiol 2019; 202:623-635. [PMID: 31773197 DOI: 10.1007/s00203-019-01775-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 11/03/2019] [Accepted: 11/13/2019] [Indexed: 01/25/2023]
Abstract
Pseudomonas aeruginosa is a potent biofilm forming organism causing several diseases on host involving biofilm. Several natural and synthetic molecules have been explored towards inhibiting the biofilm formation of Pseudomonas aeruginosa. In the current report, the role of a natural molecule namely caffeine was examined against the biofilm forming ability of P. aeruginosa. We have observed that caffeine shows substantial antimicrobial activity against P. aeruginosa wherein the minimum inhibitory concentration (MIC) of caffeine was found to be 200 μg/mL. The antibiofilm activity of caffeine was determined by performing a series of experiments using its sub-MIC concentrations (40 and 80 μg/mL). The results revealed that caffeine can significantly inhibit the biofilm development of P. aeruginosa. Caffeine has been found to interfere with the quorum sensing of P. aeruginosa by targeting the swarming motility. Molecular docking analysis further indicated that caffeine can interact with the quorum sensing proteins namely LasR and LasI. Thus, the result indicated that caffeine could inhibit the formation of biofilm by interfering with the quorum sensing of the organism. Apart from biofilm inhibition, caffeine has also been found to reduce the secretion of virulence factors from Pseudomonas aeruginosa. Taken together, the results revealed that in addition to biofilm inhibition, caffeine can also decrease the spreading of virulence factors from Pseudomonas aeruginosa.
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Braun MS, Sporer F, Zimmermann S, Wink M. Birds, feather-degrading bacteria and preen glands: the antimicrobial activity of preen gland secretions from turkeys (Meleagris gallopavo) is amplified by keratinase. FEMS Microbiol Ecol 2019; 94:5036518. [PMID: 29901706 DOI: 10.1093/femsec/fiy117] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Accepted: 06/11/2018] [Indexed: 01/27/2023] Open
Abstract
The function of uropygial glands (preen glands) has been subject to controversial debates. In this study, we evaluated the antimicrobial potential of preen gland secretions of turkeys (Meleagris gallopavo) against 18 microbial strains by means of diffusion tests, broth microdilutions, checkerboard assays and time-kill curves. Furthermore, we tested the hypothesis that lipids exert direct antimicrobial effects on pathogens. Moreover, we checked for mutualistic relationships between the preen gland bacterium Corynebacterium uropygiale with its hosts. We found that preen gland secretions significantly inhibited the growth of a broad spectrum of bacteria and fungi, particularly when combined with keratinase. Combinations effectively killed multidrug resistant microorganisms in a strongly synergistic manner. Since feather-degrading microorganisms (FDM) express keratinase and thereby disrupt the integrity of the plumage, our data suggests that preen gland secretions of turkeys are specifically activated in the presence of FDM, and specifically eliminate FDM from feathers. However, antimicrobial effects did not originate from lipids, but were mediated by highly polar compounds which might be antimicrobial peptides (AMPs). Finally, C. uropygiale is apparently not involved in the antimicrobial activity of preen gland secretions of turkeys. In conclusion, our results suggest that turkeys can antagonize FDM by amplifying the antimicrobial properties of their preen gland secretions.
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Affiliation(s)
- Markus Santhosh Braun
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, INF 364, 69120 Heidelberg, Germany
| | - Frank Sporer
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, INF 364, 69120 Heidelberg, Germany
| | - Stefan Zimmermann
- Department of Infectious Diseases, Medical Microbiology and Hygiene, Heidelberg University, INF 324, 69120 Heidelberg, Germany
| | - Michael Wink
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, INF 364, 69120 Heidelberg, Germany
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Karimi S, Lotfipour F, Asnaashari S, Asgharian P, Sarvari Y, Hazrati S. Phytochemical Analysis and Anti-microbial Activity of Some Important Medicinal Plants from North-west of Iran. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2019; 18:1871-1883. [PMID: 32184854 PMCID: PMC7059075 DOI: 10.22037/ijpr.2019.1100817] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Due to the increase of microbial resistance to antibiotics and the occurrence of side effects, use of medicinal plants with anti-microbial properties seems to be rational. Hence, in this study, some plants of the Apiaceae, Asteraceae, Brassicaceae, and Cucurbitaceae families were evaluated for antimicrobial effects. The aerial parts of the plants were extracted by different solvents using a Soxhlet apparatus. Subsequently, the inhibitory effect of the extracts on different microbial species was assessed. Extracts with high growth inhibitory effect were fractionated and their MIC was determined. Furthermore, primary phytochemical and GC-MS analysis were used to identify the chemical compounds of potent samples of n-hexane extracts of Eryngium caerulum (E. caeruleum) and Eryngium thyrsoideum (E. thyrsoideum.) Both plants showed considerable antimicrobial activities against Staphylococcus epidermidis among the fractions, 40% and 60% VLC fractions of n-hex extract of E. caeruleum and 40% VLC fraction of n-hexane extract of E. thyrsoideum illustrated the most growth inhibitory effect. Moreover, the results of preliminary phytochemical and GC-MS analysis confirmed that steroids, fatty acids and terpenoids play an important role to show anti-microbial activity, respectively. Among all samples, the 40% VLC fraction of n-hexane extract of E. thyrsoideum for possessing high amounts of fatty acids and terpenoids indicated the most anti-microbial potency.
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Affiliation(s)
- Samaneh Karimi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Farzaneh Lotfipour
- Department of Pharmaceutical and Food Control, Faculty of Pharmacy, Tabriz University of Medical Sciences Tabriz, Iran.
| | - Solmaz Asnaashari
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Parina Asgharian
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
- Department of Pharmacognosy, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Yaser Sarvari
- Research Institute for Fundamental Sciences (RIFS), University of Tabriz, Tabriz, Iran.
| | - Saeid Hazrati
- Department of Agronomy, Faculty of Agriculture, Azarbaijan Shahid Madani University, Tabriz, Iran.
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Matsumoto A, Uesono Y. Physicochemical Solubility of and Biological Sensitivity to Long-Chain Alcohols Determine the Cutoff Chain Length in Biological Activity. Mol Pharmacol 2018; 94:1312-1320. [DOI: 10.1124/mol.118.112656] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 09/26/2018] [Indexed: 11/22/2022] Open
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3,6-Di(pyridin-2-yl)-1,2,4,5-tetrazine (pytz)-capped silver nanoparticles (TzAgNPs) inhibit biofilm formation of Pseudomonas aeruginosa: a potential approach toward breaking the wall of biofilm through reactive oxygen species (ROS) generation. Folia Microbiol (Praha) 2018; 63:763-772. [PMID: 29855854 DOI: 10.1007/s12223-018-0620-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 05/24/2018] [Indexed: 12/14/2022]
Abstract
Microbial biofilms are factions of surface-colonized cells encompassed in a matrix of extracellular polymeric substances. Profound application of antibiotics in order to treat infections due to microbial biofilm has led to the emergence of several drug-resistant microbial strains. In this context, a novel type of 3,6-di(pyridin-2-yl)-1,2,4,5-tetrazine (pytz)-capped silver nanoparticles (TzAgNPs) was synthesized, and efforts were given to test its antimicrobial and antibiofilm activities against Pseudomonas aeruginosa, a widely used biofilm-forming pathogenic organism. The synthesized TzAgNPs showed considerable antimicrobial activity wherein the MIC value of TzAgNPs was found at 40 μg/mL against Pseudomonas aeruginosa. Antibiofilm activity of TzAgNPs was also tested against Pseudomonas aeruginosa by carrying out an array of experiments like microscopic observation, crystal violet assay, and protein count using the sub-MIC doses of TzAgNPs. Since TzAgNPs showed efficient antibiofilm activity, thus, in the present study, efforts were put together to investigate the underlying cause of biofilm attenuation of Pseudomonas aeruginosa by using TzAgNPs. To this end, we discerned that the sub-MIC doses of TzAgNPs increased ROS level considerably in the bacterial cell. The result showed that the ROS level and microbial biofilm formation are inversely proportional. Thus, the attenuation in microbial biofilm could be attributed to the accumulation of ROS level. Furthermore, it was also duly noted that microorganisms upon treatment with TzAgNPs exhibited considerable diminution in virulence factors (protease and pyocyanin) in contrast to the control where the organisms were not treated with TzAgNPs. Thus, the results indicated that TzAgNPs exhibit considerable reduction in the development of biofilms and spreading of virulence factors. Taken together, all the results indicated that TzAgNPs could be deemed to be a promising agent for the prevention of microbial biofilm development that might assist to fight against infections linked to biofilm.
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Kama-Kama F, Omosa LK, Nganga J, Maina N, Osanjo G, Yaouba S, Ilias M, Midiwo J, Naessens J. Antimycoplasmal Activities of Compounds from Solanum aculeastrum and Piliostigma thonningii against Strains from the Mycoplasma mycoides Cluster. Front Pharmacol 2017; 8:920. [PMID: 29311927 PMCID: PMC5742823 DOI: 10.3389/fphar.2017.00920] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 12/04/2017] [Indexed: 11/22/2022] Open
Abstract
Infections caused by Mycoplasma species belonging to the ‘mycoides cluster’ negatively affect the agricultural sector through losses in livestock productivity. These Mycoplasma strains are resistant to many conventional antibiotics due to the total lack of cell wall. Therefore, there is an urgent need to develop new antimicrobial agents from alternative sources such as medicinal plants to curb the resistance threat. Recent studies on extracts from Solanum aculeastrum and Piliostigma thonningii revealed interesting antimycoplasmal activities hence the motivation to investigate the antimycoplasmal activities of constituent compounds. The CH2Cl2/MeOH extracts from the berries of S. aculeastrum yielded a new β-sitosterol derivative (1) along with six known ones including; lupeol (2), two long-chain fatty alcohols namely undecyl alcohol (3) and lauryl alcohol (4); two long-chain fatty acids namely; myristic acid (5) and nervonic acid (6) as well as a glycosidic steroidal alkaloid; (25R)-3β-O-α-L-rhamnopyranosyl-(1→2)-O-[α-L-rhamnopyranosyl-(1→4)]-β-D-glucopyranosyloxy-22α-N-spirosol-5-ene (7) from the MeOH extracts. A new furan diglycoside, (2,5-D-diglucopyranosyloxy-furan) (8) was also characterized from the CH2Cl2/MeOH extract of stem bark of P. thonningii. The structures of the compounds were determined on the basis of spectroscopic evidence and comparison with literature data. Compounds 1, 3, 4, 7, and 8 isolated in sufficient yields were tested against the growth of two Mycoplasma mycoides subsp. mycoides (Mmm), two M. mycoides. capri (Mmc), and one M. capricolum capricolum (Mcc) using broth dilution methods, while the minimum inhibitory concentration (MIC) was determined by serial dilution. The inhibition of Mycoplasma in vitro growth was determined by the use of both flow cytometry (FCM) and color change units (CCU) methods. Compounds 4 and 7 showed moderate activity against the growth of Mmm and Mmc but were inactive against the growth of Mcc. The lowest MIC value was 50 μg/ml for compound 7 against Mmm. The rest of the compounds showed minimal or no activity against the strains of Mycoplasma mycoides tested. This is the first report on the use of combined FCM and CCU to determine inhibition of in vitro growth of Mycoplasma mycoides. The activity of these compounds against other bacterial strains should be tested and their safety profiles determined.
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Affiliation(s)
- Francisca Kama-Kama
- Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya.,Biosciences Eastern and Central Africa, International Livestock Research Institute, Nairobi, Kenya
| | | | - Joseph Nganga
- Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Naomi Maina
- Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Georges Osanjo
- Department of Pharmacology and Pharmacognosy, School of Pharmacy, University of Nairobi, Nairobi, Kenya
| | - Souaibou Yaouba
- Department of Chemistry, University of Nairobi, Nairobi, Kenya
| | - Muhammad Ilias
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, Oxford, MS, United States
| | - Jacob Midiwo
- Department of Chemistry, University of Nairobi, Nairobi, Kenya
| | - Jan Naessens
- Biosciences Eastern and Central Africa, International Livestock Research Institute, Nairobi, Kenya
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48
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Das A, Das MC, Das N, Bhattacharjee S. Evaluation of the antileishmanial potency, toxicity and phytochemical constituents of methanol bark extract of Sterculia villosa. PHARMACEUTICAL BIOLOGY 2017; 55:998-1009. [PMID: 28173714 PMCID: PMC6130613 DOI: 10.1080/13880209.2017.1285946] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 12/06/2016] [Accepted: 01/19/2017] [Indexed: 06/06/2023]
Abstract
CONTEXT Visceral leishmaniasis is a protozoan disease caused by Leishmania donovani parasite. The genus Sterculia (Malvaceae) possesses ethnobotanical potential against this protozoan infection. OBJECTIVE Determining the potential role of methanol bark extracts from Sterculia villosa Roxb (SVE) and its phytoconstituents against Leishmania donovani promastigotes. MATERIALS AND METHODS SVE was analysed by TLC, UV-Vis, IR spectroscopy and biochemical assays. Antileishmanial potential of SVE (0.5-130 μg/mL for 72 h) was characterized by MTT assay. Fluorescent microscopy was performed to validate the IC50 dose. To determine the effect of SVE on promastigotes, reactive oxygen species (ROS) and superoxide generation, lipid peroxidation and DNA fragmentation assays were performed. Molecular aggregation of compounds was determined by atomic force microscopy (AFM). Extent of cytotoxicity of SVE at IC50 dose was determined against RAW 264.7 macrophages, peritoneal macrophages and murine RBCs. In vivo cytotoxicity of SVE was evaluated in BALB/c mice. RESULT SVE exhibited reverse dose dependent antileishmanial activity when 130-0 μg/mL doses were tested against promastigotes. The IC50 and IC70 values were found to be 17.5 and 10 μg/mL, respectively. SVE at IC50 dose demonstrated elevated level of ROS, superoxide, lipid peroxidation and DNA fragmentation against promastigotes with no cytotoxicity. AFM analysis suggested increasing size of molecular aggregation (31.3 nm < 35.2 nm < 2.93 μm) with increase in concentration (10 μg < 17.5 μg < 130 μg). DISCUSSION AND CONCLUSIONS The study elucidates the antileishmanial potential of SVE against Leishmania donovani promastigotes by exerting oxidative stress and DNA damage. In sum, SVE can be explored as an immunotherapeutic candidate against leishmaniasis and other infectious diseases.
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MESH Headings
- Animals
- Antiprotozoal Agents/isolation & purification
- Antiprotozoal Agents/pharmacology
- Antiprotozoal Agents/toxicity
- Chromatography, Thin Layer
- DNA Fragmentation
- Dose-Response Relationship, Drug
- Leishmania donovani/drug effects
- Leishmania donovani/genetics
- Leishmania donovani/growth & development
- Leishmania donovani/metabolism
- Leishmaniasis, Visceral/drug therapy
- Leishmaniasis, Visceral/metabolism
- Leishmaniasis, Visceral/parasitology
- Lethal Dose 50
- Lipid Peroxidation/drug effects
- Macrophages, Peritoneal/drug effects
- Macrophages, Peritoneal/pathology
- Methanol/chemistry
- Mice
- Mice, Inbred BALB C
- Microscopy, Fluorescence
- Oxidative Stress/drug effects
- Parasitic Sensitivity Tests
- Phytochemicals/isolation & purification
- Phytochemicals/pharmacology
- Phytochemicals/toxicity
- Phytotherapy
- Plant Bark/chemistry
- Plant Extracts/isolation & purification
- Plant Extracts/pharmacology
- Plant Extracts/toxicity
- Plants, Medicinal
- RAW 264.7 Cells
- Solvents/chemistry
- Spectrophotometry, Ultraviolet
- Spectroscopy, Fourier Transform Infrared
- Sterculia/chemistry
- Superoxides/metabolism
- Time Factors
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Affiliation(s)
- Antu Das
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, India
| | - Manash C. Das
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, India
| | - Niranjan Das
- Department of Chemistry, Netaji Shubhas Mahavidyalaya, Udaipur, India
| | - Surajit Bhattacharjee
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, India
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49
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Sen Gupta S, Ghosh M. Octacosanol educes physico-chemical attributes, release and bioavailability as modified nanocrystals. Eur J Pharm Biopharm 2017. [DOI: 10.1016/j.ejpb.2017.06.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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50
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Ghosh R, Das MC, Sarkar A, Das A, Sandhu P, Dinda B, Akhter Y, Bhattacharjee S, De UC. Exploration of Phytoconstituents from Mussaenda roxburghii
and Studies of Their Antibiofilm Effect. Chem Biodivers 2017; 14. [DOI: 10.1002/cbdv.201700165] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 07/05/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Ranjit Ghosh
- Department of Chemistry; Tripura University; Suryamaninagar 799022 Tripura India
| | - Manash C. Das
- Department of Molecular Biology & Bioinformatics; Tripura University; Suryamaninagar 799022 Tripura India
| | - Arpita Sarkar
- Department of Molecular Biology & Bioinformatics; Tripura University; Suryamaninagar 799022 Tripura India
| | - Antu Das
- Department of Molecular Biology & Bioinformatics; Tripura University; Suryamaninagar 799022 Tripura India
| | - Padmani Sandhu
- Centre for Computational Biology and Bioinformatics; School of Life Sciences; Central University of Himachal Pradesh; Shahpur Kangra District 176206 Himachal Pradesh India
| | - Biswanath Dinda
- Department of Chemistry; Tripura University; Suryamaninagar 799022 Tripura India
| | - Yusuf Akhter
- Centre for Computational Biology and Bioinformatics; School of Life Sciences; Central University of Himachal Pradesh; Shahpur Kangra District 176206 Himachal Pradesh India
| | - Surajit Bhattacharjee
- Department of Molecular Biology & Bioinformatics; Tripura University; Suryamaninagar 799022 Tripura India
| | - Utpal Ch. De
- Department of Chemistry; Tripura University; Suryamaninagar 799022 Tripura India
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