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Shih SY, Huang YS, Chou KR, Wu HY, Tsai H. Isolation and genome characterization of Paenibacillus polymyxa 188, a potential biocontrol agent against fungi. J Appl Microbiol 2024; 135:lxae075. [PMID: 38509027 DOI: 10.1093/jambio/lxae075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 03/04/2024] [Accepted: 03/19/2024] [Indexed: 03/22/2024]
Abstract
AIMS In this work, we aimed to isolate marine bacteria that produce metabolites with antifungal properties. METHODS AND RESULTS Paenibacillus polymyxa 188 was isolated from a marine sediment sample, and it showed excellent antifungal activity against many fungi pathogenic to plants (Fusarium tricinctum, Pestalotiopsis clavispora, Fusarium oxysporum, F. oxysporum f. sp. Cubense (Foc), Curvularia plantarum, and Talaromyces pinophilus) and to humans (Aspergillus terreus, Penicillium oxalicum, and Microsphaeropsis arundinis). The antifungal compounds produced by P. polymyxa 188 were extracted and analyzed using matrix-assisted laser desorption ionization time-of-flight mass spectrometry. The complete genome sequence and biosynthetic gene clusters of P. polymyxa 188 were characterized and compared with those of other strains. A total of 238 carbohydrate-active enzymes (CAZymes) were identified in P. polymyxa 188. Two antibiotic gene clusters, fusaricidin and tridecaptin, exist in P. polymyxa 188, which is different from other strains that typically have multiple antibiotic gene clusters. CONCLUSIONS Paenibacilluspolymyxa 188 was identified with numerous biosynthetic gene clusters, and its antifungal ability against pathogenic fungi was verified.
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Affiliation(s)
- Sra-Yh Shih
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung City, 804, Taiwan
| | - You-Syu Huang
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung City, 804, Taiwan
- Eastern Marine Biology Research Center, Taitung City, 950, Taiwan
| | - Ker-Rui Chou
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung City, 804, Taiwan
| | - Hung-Yi Wu
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung City, 804, Taiwan
| | - HsinYuan Tsai
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung City, 804, Taiwan
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Yao D, Wang X, Ma L, Wu M, Xu L, Yu Q, Zhang L, Zheng X. Impact of Weissella cibaria BYL4.2 and its supernatants on Penicillium chrysogenum metabolism. Front Microbiol 2022; 13:983613. [PMID: 36274712 PMCID: PMC9581191 DOI: 10.3389/fmicb.2022.983613] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/20/2022] [Indexed: 11/21/2022] Open
Abstract
Lactic acid bacteria (LAB) can produce a vast spectrum of antifungal metabolites to inhibit fungal growth. The purpose of this study was to elucidate the antifungal effect of isolated Weissella cibaria BYL4.2 on Penicillium chrysogenum, the antifungal activity of W. cibaria BYL4.2 against P. chrysogenum was evaluated by the superposition method, results showed that it had obviously antifungal activity against P. chrysogenum. Studying the probiotic properties of BYL4.2 and determining it as beneficial bacteria. Furtherly, different treatments were carried out to characterize the antifungal activity of cell-free supernatant (CFS) produced by W. cibaria BYL4.2, and it was shown that the CFS was pH-dependent, partly heat-sensitive, and was not influenced by proteinaceous treatment. The CFS of W. cibaria BYL4.2 was analyzed by high-performance liquid chromatography (HPLC) and found the highest content of lactic acid. Screening of metabolic markers by a non-targeted metabolomics approach based liquid chromatography-mass spectrometry (LC-MS). The results speculated that organic acid especially detected D-tartaric acid was the main antifungal substance of CFS, which could cause the down-regulation of metabolites in the ABC transporters pathway, thereby inhibiting the growth of P. chrysogenum. Therefore, this study may provide important information for the inhibitory mechanism of W. cibaria BYL4.2 on P. chrysogenum, and provide a basis for further research on the antifungal effect of Weissella.
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Tsai SH, Chen YT, Yang YL, Lee BY, Huang CJ, Chen CY. The Potential Biocontrol Agent Paenibacillus polymyxa TP3 Produces Fusaricidin-Type Compounds Involved in the Antagonism Against Gray Mold Pathogen Botrytis cinerea. Phytopathology 2022; 112:775-783. [PMID: 34587815 DOI: 10.1094/phyto-04-21-0178-r] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Paenibacillus polymyxa is a beneficial bacterium for plant health. P. polymyxa TP3 exhibits antagonistic activity toward Botrytis cinerea and alleviates gray mold symptoms on the leaves of strawberry plants. Moreover, suppression of gray mold on the flowers and fruits of strawberry plants in field trials, including vegetative cells and endospores, was demonstrated, indicating the potential of strain TP3 as a biological control agent. To examine the anti-B. cinerea compounds produced by P. polymyxa TP3, we performed matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, and fusaricidin-corresponding mass spectra were detected. Moreover, fusaricidin-related signals appeared in imaging mass spectrometry of TP3 when confronted with B. cinerea. By using liquid chromatography mass spectrometry-based molecular networking approach, we identified several fusaricidins including a new variant of mass/charge ratio 917.5455 with serine in the first position of the hexapeptide. Via advanced mass spectrometry and network analysis, fusaricidin-type compounds produced by P. polymyxa TP3 were efficiently disclosed and were presumed to play roles in the antagonism against gray mold pathogen B. cinerea.
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Affiliation(s)
- Shuen-Huang Tsai
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei 10617, Taiwan, Republic of China
| | - Yu-Ting Chen
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei 10617, Taiwan, Republic of China
| | - Yu-Liang Yang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei 11529, Taiwan, Republic of China
| | - Bo-Yi Lee
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei 10617, Taiwan, Republic of China
| | - Chien-Jui Huang
- Department of Plant Medicine, National Chiayi University, Chiayi 60004, Taiwan, Republic of China
| | - Chao-Ying Chen
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei 10617, Taiwan, Republic of China
- Master Program for Plant Medicine, National Taiwan University, Taipei 10617, Taiwan, Republic of China
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Jiang A, Zou C, Xu X, Ke Z, Hou J, Jiang G, Fan C, Gong J, Wei J. Complete genome sequence of biocontrol strain Paenibacillus peoriae HJ-2 and further analysis of its biocontrol mechanism. BMC Genomics 2022; 23:161. [PMID: 35209846 PMCID: PMC8876185 DOI: 10.1186/s12864-022-08330-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 01/19/2022] [Indexed: 01/25/2023] Open
Abstract
Background Paris polyphylla is a herb widely used in traditional Chinese medicine to treat various diseases. Stem rot diseases seriously affected the yield of P. polyphylla in subtropical areas of China. Therefore, cost-effective, chemical-free, eco-friendly strategies to control stem rot on P. polyphylla are valuable and urgently needed. Results In this paper, we reported the biocontrol efficiency of Paenibacillus peoriae HJ-2 and its complete genome sequence. Strain HJ-2 could serve as a potential biocontrol agent against stem rot on P. polyphylla in the greenhouse and field. The genome of HJ-2 consists of a single 6,001,192 bp chromosome with an average GC content of 45% and 5,237 predicted protein coding genes, 39 rRNAs and 108 tRNAs. The phylogenetic tree indicated that HJ-2 is most closely related to P. peoriae IBSD35. Functional analysis of genome revealed numerous genes/gene clusters involved in plant colonization, biofilm formation, plant growth promotion, antibiotic and resistance inducers synthesis. Moreover, metabolic pathways that potentially contribute to biocontrol mechanisms were identified. Conclusions This study revealed that P. peoriae HJ-2 could serve as a potential BCA against stem rot on P. polyphylla. Based on genome analysis, the genome of HJ-2 contains more than 70 genes and 12 putative gene clusters related to secondary metabolites, which have previously been described as being involved in chemotaxis motility, biofilm formation, growth promotion, antifungal activity and resistance inducers biosynthesis. Compared with other strains, variation in the genes/gene clusters may lead to different antimicrobial spectra and biocontrol efficacies. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-022-08330-0.
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Affiliation(s)
- Aiming Jiang
- College of Agriculture, Guangxi University, Nanning, 530004, China.,College of Chemistry and Environmental Engineering, Hanjiang Normal University, Shiyan, 442000, China
| | - Chengwu Zou
- College of Agriculture, Guangxi University, Nanning, 530004, China
| | - Xiang Xu
- Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, 442000, China
| | - Zunwei Ke
- College of Chemistry and Environmental Engineering, Hanjiang Normal University, Shiyan, 442000, China
| | - Jiangan Hou
- College of Agriculture, Guangxi University, Nanning, 530004, China
| | - Guihe Jiang
- College of Agriculture, Guangxi University, Nanning, 530004, China
| | - Chunli Fan
- College of Agriculture, Guangxi University, Nanning, 530004, China
| | - Jianhua Gong
- College of Chemistry and Environmental Engineering, Hanjiang Normal University, Shiyan, 442000, China
| | - Jiguang Wei
- College of Agriculture, Guangxi University, Nanning, 530004, China.
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Mishra B, Mishra AK, Kumar S, Mandal SK, NSV L, Kumar V, Baek KH, Mohanta YK. Antifungal Metabolites as Food Bio-Preservative: Innovation, Outlook, and Challenges. Metabolites 2021; 12:12. [PMID: 35050134 PMCID: PMC8778586 DOI: 10.3390/metabo12010012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 12/21/2021] [Accepted: 12/21/2021] [Indexed: 12/18/2022] Open
Abstract
Perishable food spoilage caused by fungi is a major cause of discomfort for food producers. Food sensory abnormalities range from aesthetic degeneration to significant aroma, color, or consistency alterations due to this spoilage. Bio-preservation is the use of natural or controlled bacteria or antimicrobials to enhance the quality and safety of food. It has the ability to harmonize and rationalize the required safety requirements with conventional preservation methods and food production safety and quality demands. Even though synthetic preservatives could fix such issues, there is indeed a significant social need for "clean label" foods. As a result, consumers are now seeking foods that are healthier, less processed, and safer. The implementation of antifungal compounds has gotten a lot of attention in recent decades. As a result, the identification and characterization of such antifungal agents has made promising advances. The present state of information on antifungal molecules, their modes of activity, connections with specific target fungi varieties, and uses in food production systems are summarized in this review.
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Affiliation(s)
- Bishwambhar Mishra
- Department of Biotechnology, Chaitanya Bharathi Institute of Technology, Hyderabad 500075, India; (B.M.); (S.K.M.); (L.N.)
| | - Awdhesh Kumar Mishra
- Department of Biotechnology, Yeungnam University, Gyeongsan 38541, Gyeongsangbuk-do, Korea; (A.K.M.); (V.K.)
| | - Sanjay Kumar
- Department of Biotechnology, National Institute of Technology, Tadepalligudem, Andhra Pradesh 534101, India;
| | - Sanjeeb Kumar Mandal
- Department of Biotechnology, Chaitanya Bharathi Institute of Technology, Hyderabad 500075, India; (B.M.); (S.K.M.); (L.N.)
| | - Lakshmayya NSV
- Department of Biotechnology, Chaitanya Bharathi Institute of Technology, Hyderabad 500075, India; (B.M.); (S.K.M.); (L.N.)
| | - Vijay Kumar
- Department of Biotechnology, Yeungnam University, Gyeongsan 38541, Gyeongsangbuk-do, Korea; (A.K.M.); (V.K.)
- Department of Orthopedics Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Kwang-Hyun Baek
- Department of Biotechnology, Yeungnam University, Gyeongsan 38541, Gyeongsangbuk-do, Korea; (A.K.M.); (V.K.)
| | - Yugal Kishore Mohanta
- Department of Applied Biology, University of Science and Technology Meghalaya, Ri-Bhoi 793101, India
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Mülner P, Schwarz E, Dietel K, Herfort S, Jähne J, Lasch P, Cernava T, Berg G, Vater J. Fusaricidins, Polymyxins and Volatiles Produced by Paenibacillus polymyxa Strains DSM 32871 and M1. Pathogens 2021; 10:pathogens10111485. [PMID: 34832640 PMCID: PMC8621861 DOI: 10.3390/pathogens10111485] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/09/2021] [Accepted: 11/09/2021] [Indexed: 01/18/2023] Open
Abstract
Paenibacilli are efficient producers of potent agents against bacterial and fungal pathogens, which are of great interest both for therapeutic applications in medicine as well as in agrobiotechnology. Lipopeptides produced by such organisms play a major role in their potential to inactivate pathogens. In this work we investigated two lipopeptide complexes, the fusaricidins and the polymyxins, produced by Paenibacillus polymyxa strains DSM 32871 and M1 by MALDI-TOF mass spectrometry. The fusaricidins show potent antifungal activities and are distinguished by an unusual variability. For strain DSM 32871 we identified numerous yet unknown variants mass spectrometrically. DSM 32871 produces polymyxins of type E (colistins), while M1 forms polymyxins P. For both strains, novel but not yet completely characterized polymyxin species were detected, which possibly are glycosylated. These compounds may be of interest therapeutically, because polymyxins have gained increasing attention as last-resort antibiotics against multiresistant pathogenic Gram-negative bacteria. In addition, the volatilomes of DSM 32781 and M1 were investigated with a GC–MS approach using different cultivation media. Production of volatile organic compounds (VOCs) was strain and medium dependent. In particular, strain M1 manifested as an efficient VOC-producer that exhibited formation of 25 volatiles in total. A characteristic feature of Paenibacilli is the formation of volatile pyrazine derivatives.
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Affiliation(s)
- Pascal Mülner
- ABITEP GmbH, Glienicker Weg 185, 12489 Berlin, Germany; (P.M.); (E.S.); (K.D.)
- Institute of Environmental Biotechnology, Graz University of Technology, Petergasse 12, 8010 Graz, Austria; (T.C.); (G.B.)
| | - Elisa Schwarz
- ABITEP GmbH, Glienicker Weg 185, 12489 Berlin, Germany; (P.M.); (E.S.); (K.D.)
| | - Kristin Dietel
- ABITEP GmbH, Glienicker Weg 185, 12489 Berlin, Germany; (P.M.); (E.S.); (K.D.)
| | - Stefanie Herfort
- Robert Koch-Institut, ZBS6, Proteomics and Spectroscopy, Seestr 10, 13353 Berlin, Germany; (S.H.); (J.J.); (P.L.)
| | - Jennifer Jähne
- Robert Koch-Institut, ZBS6, Proteomics and Spectroscopy, Seestr 10, 13353 Berlin, Germany; (S.H.); (J.J.); (P.L.)
| | - Peter Lasch
- Robert Koch-Institut, ZBS6, Proteomics and Spectroscopy, Seestr 10, 13353 Berlin, Germany; (S.H.); (J.J.); (P.L.)
| | - Tomislav Cernava
- Institute of Environmental Biotechnology, Graz University of Technology, Petergasse 12, 8010 Graz, Austria; (T.C.); (G.B.)
| | - Gabriele Berg
- Institute of Environmental Biotechnology, Graz University of Technology, Petergasse 12, 8010 Graz, Austria; (T.C.); (G.B.)
| | - Joachim Vater
- Robert Koch-Institut, ZBS6, Proteomics and Spectroscopy, Seestr 10, 13353 Berlin, Germany; (S.H.); (J.J.); (P.L.)
- Correspondence:
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Clements T, Rautenbach M, Ndlovu T, Khan S, Khan W. A Metabolomics and Molecular Networking Approach to Elucidate the Structures of Secondary Metabolites Produced by Serratia marcescens Strains. Front Chem 2021; 9:633870. [PMID: 33796505 PMCID: PMC8007976 DOI: 10.3389/fchem.2021.633870] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 01/27/2021] [Indexed: 01/29/2023] Open
Abstract
An integrated approach that combines reverse-phase high-performance liquid chromatography (RP-HPLC), electrospray ionization mass spectrometry, untargeted ultra-performance liquid chromatography coupled to tandem mass spectrometry (UPLC-MSE) and molecular networking (using the Global Natural Products Social molecular network platform) was used to elucidate the metabolic profiles and chemical structures of the secondary metabolites produced by pigmented (P1) and non-pigmented (NP1) Serratia marcescens (S. marcescens) strains. Tandem mass spectrometry-based molecular networking guided the structural elucidation of 18 compounds for the P1 strain (including 6 serratamolides, 10 glucosamine derivatives, prodigiosin and serratiochelin A) and 15 compounds for the NP1 strain (including 8 serratamolides, 6 glucosamine derivatives and serratiochelin A) using the MSE fragmentation profiles. The serratamolide homologues were comprised of a peptide moiety of two L-serine residues (cyclic or open-ring) linked to two fatty acid chains (lengths of C10, C12, or C12:1). Moreover, the putative structure of a novel open-ring serratamolide homologue was described. The glucosamine derivative homologues (i.e., N-butylglucosamine ester derivatives) consisted of four residues, including glucose/hexose, valine, a fatty acid chain (lengths of C13 - C17 and varying from saturated to unsaturated) and butyric acid. The putative structures of seven novel glucosamine derivative homologues and one glucosamine derivative congener (containing an oxo-hexanoic acid residue instead of a butyric acid residue) were described. Moreover, seven fractions collected during RP-HPLC, with major molecular ions corresponding to prodigiosin, serratamolides (A, B, and C), and glucosamine derivatives (A, C, and E), displayed antimicrobial activity against a clinical Enterococcus faecalis S1 strain using the disc diffusion assay. The minimum inhibitory and bactericidal concentration assays however, revealed that prodigiosin exhibited the greatest antimicrobial potency, followed by glucosamine derivative A and then the serratamolides (A, B, and C). These results provide crucial insight into the secondary metabolic profiles of pigmented and non-pigmented S. marcescens strains and confirms that S. marcescens strains are a promising natural source of novel antimicrobial metabolites.
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Affiliation(s)
- Tanya Clements
- Department of Microbiology, Faculty of Science, Stellenbosch University, Stellenbosch, South Africa
| | - Marina Rautenbach
- BioPep™ Peptide Group, Department of Biochemistry, Faculty of Science, Stellenbosch University, Stellenbosch, South Africa
| | - Thando Ndlovu
- Department of Microbiology, Faculty of Science, Stellenbosch University, Stellenbosch, South Africa
| | - Sehaam Khan
- Faculty of Health Sciences, University of Johannesburg, Doornfontein, South Africa
| | - Wesaal Khan
- Department of Microbiology, Faculty of Science, Stellenbosch University, Stellenbosch, South Africa
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Haron MH, Avula B, Shi Q, Li XC, Ashfaq MK, Bae JY, Guan S, Hinchee M, Khan IA, Khan SI. Quantitative determination and pharmacokinetic study of fusaricidin A in mice plasma and tissues using ultra-high performance liquid chromatography-tandem mass spectrometry. J Pharm Biomed Anal 2019; 170:187-192. [PMID: 30927664 DOI: 10.1016/j.jpba.2019.03.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 03/11/2019] [Accepted: 03/18/2019] [Indexed: 11/26/2022]
Abstract
Fusaricidins are a family of cyclic lipodepsipeptides that convey antifungal and antibacterial activity. Fusaricidin A (FA) is one of the Fusaricidins major compounds and it is showing promising activity against fungi and bacteria. In the present study, a fast and sensitive ultra-high performance liquid chromatography coupled to triple quadrupole mass spectrometry (UHPLC-MS/MS) method was developed for the analysis of FA in mice plasma, liver, kidney and brain tissues. The instrument was operated in positive electrospray ionization mode. Multiple reaction monitoring (MRM) mode was performed with ion pairs of m/z: 883.5→256.3, 883.5→197.2 and 883.5→72.1 for FA. The method was validated for linearity, repeatability, accuracy, stability, limits of detection (LOD) and limits of quantification (LOQ). The LOD and LOQ were 0.01 and 0.05 ng/mL for plasma and tissues, respectively. The calibration curve (10-200 ng/mL) was linear ( r2 = 0.99). Precision and accuracy values were found to be < 10% (within acceptable limit). The pharmacokinetic and tissue distribution characteristics of FA were determined in plasma, liver, kidney and brain of CD1 mice after I.V. administration of a single dose of 15 mg/kg body weight. Highest plasma concentration (Cmax) was calculated to be 4169.97 ± 50 ng/mL with a tmax of 0.08 h. The plasma clearance rate of FA was 397.6 ± 203 mL/h with a t1/2 of 2.2 ± 0.5 h and apparent volume of distribution during the terminal phase (Vz) of 979.2 ± 318 mL. The highest tissue concentration (Cmax) was found in the liver (219 ± 14 ng/mg) at a tmax of 0.08 h followed by the kidneys (38.6 ± 16 ng/mg) at tmax of 0.2 h. FA was poorly distributed to the brain with a Cmax of 0.45 ± 0.2 ng/mg and a tmax of 0.08 h. The method for quantitative analysis and pharmacokinetic data provided will support the development of various formulation approaches and therapeutic application for future clinical studies.
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Affiliation(s)
- Mona H Haron
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Bharathi Avula
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Qiu Shi
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Xing-Cong Li
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA; Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Mohammad K Ashfaq
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Ji-Yeong Bae
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Shaohua Guan
- Agricen Science, 801 Hwy 377S, Pilot Point, Texas, 76258, USA
| | - Maud Hinchee
- Agricen Science, 801 Hwy 377S, Pilot Point, Texas, 76258, USA
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA; Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
| | - Shabana I Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, 38677, USA; Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, University, MS, 38677, USA.
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