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Leng BF, Qiu JZ, Dai XH, Dong J, Wang JF, Luo MJ, Li HE, Niu XD, Zhang Y, Ai YX, Deng XM. Allicin reduces the production of α-toxin by Staphylococcus aureus. Molecules 2011; 16:7958-68. [PMID: 21921868 PMCID: PMC6264299 DOI: 10.3390/molecules16097958] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Revised: 09/01/2011] [Accepted: 09/07/2011] [Indexed: 01/07/2023]
Abstract
Staphylococcus aureus causes a broad range of life-threatening diseases in humans. The pathogenicity of this micro-organism is largely dependent upon its virulence factors. One of the most extensively studied virulence factors is the extracellular protein α-toxin. In this study, we show that allicin, an organosulfur compound, was active against S. aureus with MICs ranged from 32 to 64 μg/mL. Haemolysis, Western blot and real-time RT-PCR assays were used to evaluate the effects of allicin on S. aureus α-toxin production and on the levels of gene expression, respectively. The results of our study indicated that sub-inhibitory concentrations of allicin decreased the production of α-toxin in both methicillin-sensitive S. aureus (MSSA) and methicillin-resistant S. aureus (MRSA) in a dose-dependent manner. Furthermore, the transcriptional levels of agr (accessory gene regulator) in S. aureus were inhibited by allicin. Therefore, allicin may be useful in the treatment of α-toxin-producing S. aureus infections.
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Affiliation(s)
- Bing-Feng Leng
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China; (B.-F.L.); (J.-Z.Q.); (X.-H.D.); (J.D.); (J.-F.W.); (M.-J.L.); (H.-E.L.); (Y.Z.)
| | - Jia-Zhang Qiu
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China; (B.-F.L.); (J.-Z.Q.); (X.-H.D.); (J.D.); (J.-F.W.); (M.-J.L.); (H.-E.L.); (Y.Z.)
| | - Xiao-Han Dai
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China; (B.-F.L.); (J.-Z.Q.); (X.-H.D.); (J.D.); (J.-F.W.); (M.-J.L.); (H.-E.L.); (Y.Z.)
| | - Jing Dong
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China; (B.-F.L.); (J.-Z.Q.); (X.-H.D.); (J.D.); (J.-F.W.); (M.-J.L.); (H.-E.L.); (Y.Z.)
| | - Jian-Feng Wang
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China; (B.-F.L.); (J.-Z.Q.); (X.-H.D.); (J.D.); (J.-F.W.); (M.-J.L.); (H.-E.L.); (Y.Z.)
| | - Ming-Jing Luo
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China; (B.-F.L.); (J.-Z.Q.); (X.-H.D.); (J.D.); (J.-F.W.); (M.-J.L.); (H.-E.L.); (Y.Z.)
| | - Hong-En Li
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China; (B.-F.L.); (J.-Z.Q.); (X.-H.D.); (J.D.); (J.-F.W.); (M.-J.L.); (H.-E.L.); (Y.Z.)
| | - Xiao-Di Niu
- College of Quartermaster Technology, Jilin University, Changchun 130062, China;
| | - Yu Zhang
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China; (B.-F.L.); (J.-Z.Q.); (X.-H.D.); (J.D.); (J.-F.W.); (M.-J.L.); (H.-E.L.); (Y.Z.)
| | - Yong-Xing Ai
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China; (B.-F.L.); (J.-Z.Q.); (X.-H.D.); (J.D.); (J.-F.W.); (M.-J.L.); (H.-E.L.); (Y.Z.)
- Authors to whom correspondence should be addressed; (X.-M.D.); (Y.-X.A.); Tel.: +86-431-87836161; Fax: +86-431-87836160
| | - Xu-Ming Deng
- Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China; (B.-F.L.); (J.-Z.Q.); (X.-H.D.); (J.D.); (J.-F.W.); (M.-J.L.); (H.-E.L.); (Y.Z.)
- Authors to whom correspondence should be addressed; (X.-M.D.); (Y.-X.A.); Tel.: +86-431-87836161; Fax: +86-431-87836160
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Wang XL, Zhao GH, Zhang J, Shi QY, Guo WX, Tian XL, Qiu JZ, Yin LZ, Deng XM, Song Y. Immunomodulatory effects of cinobufagin isolated from Chan Su on activation and cytokines secretion of immunocyte in vitro. J Asian Nat Prod Res 2011; 13:383-392. [PMID: 21534035 DOI: 10.1080/10286020.2011.565746] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The objective of this study was to evaluate the immunomodulatory effects of cinobufagin (CBG) isolated from Chan Su (Venenum Bufonis) in vitro. In this paper, our results show that CBG significantly stimulated cell proliferation of splenocytes and peritoneal macrophages (PMΦ) and markedly enhanced the phagocytic activation of PMΦ. CBG also significantly increased CD4(+)CD8(+) double-positive T-cell populations and the percentage of S-phase cells of splenic lymphocytes. The levels of several Th1 cytokines, including interferon-γ and tumor necrosis factor-α, are significantly increased after CBG treatment, whereas the levels of the Th2 cytokine interleukin-4 and interleukin-10 are significantly decreased. As a result, the ratio of Th1/Th2 also increased. Taken together, these results indicated that CBG had potential immune system regulatory effects and suggested that this compound could be developed as a novel immunotherapeutic agent to treat immune-mediated diseases such as cancer.
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Affiliation(s)
- Xiao-Liang Wang
- College of Animal Science and Veterinary Medicine, Jilin University, Changchun, China
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Li J, Dong J, Qiu JZ, Wang JF, Luo MJ, Li HE, Leng BF, Ren WZ, Deng XM. Peppermint oil decreases the production of virulence-associated exoproteins by Staphylococcus aureus. Molecules 2011; 16:1642-54. [PMID: 21326141 PMCID: PMC6259925 DOI: 10.3390/molecules16021642] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 02/08/2011] [Accepted: 02/10/2011] [Indexed: 11/28/2022] Open
Abstract
The present study aimed to evaluate the antimicrobial activity of peppermint oil against Staphylococcus aureus, and further investigate the influence of peppermint oil on S. aureus virulence-related exoprotein production. The data show that peppermint oil, which contained high contents of menthone, isomenthone, neomenthol, menthol, and menthyl acetate, was active against S. aureus with minimal inhibitory concentrations (MICs) ranging from 64-256 µg/mL, and the production of S. aureus exotoxins was decreased by subinhibitory concentrations of peppermint oil in a dose-dependent manner. The findings suggest that peppermint oil may potentially be used to aid in the treatment of S. aureus infections.
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Affiliation(s)
| | | | | | | | | | | | | | - Wen-Zhi Ren
- Authors to whom correspondence should be addressed; E-Mails: (X.-M.D.); (W.-Z.R.); Tel.: +86 431 87836161; Fax: +86 431 87836160
| | - Xu-Ming Deng
- Authors to whom correspondence should be addressed; E-Mails: (X.-M.D.); (W.-Z.R.); Tel.: +86 431 87836161; Fax: +86 431 87836160
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Xiang H, Qiu JZ, Wang DC, Jiang YS, Xia LJ, Deng XM. Influence of magnolol on the secretion of alpha-toxin by Staphylococcus aureus. Molecules 2010; 15:1679-89. [PMID: 20336007 PMCID: PMC6257330 DOI: 10.3390/molecules15031679] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2010] [Revised: 02/08/2010] [Accepted: 03/02/2010] [Indexed: 11/16/2022] Open
Abstract
In this study we investigated the antimicrobial activity of magnolol on Staphylococcus aureus. The minimal inhibitory concentrations of magnolol against 31 S. aureus strains ranged from 4–32 μg/mL. In addition, hemolysin assays, Western blotting, and real-time RT-PCR were performed to investigate the effect of magnolol on α-toxin secretion by both methicillin-sensitive S. aureus (MSSA) and methicillin-resistant S. aureus (MRSA). The results indicated that sub-inhibitory concentrations of magnolol dose-dependently inhibited the transcription of hla (the gene encoding α-toxin) in S. aureus, resulting in a reduction of α-toxin secretion and, thus, hemolytic activities.
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Affiliation(s)
- Hua Xiang
- Institute of Zoonoses, College of Animal Sciences and Veterinary Medicine, Jilin University, Changchun, Jilin 130062, China; E-Mails: (H.X.); (J.-Z.Q.)
| | - Jia-Zhang Qiu
- Institute of Zoonoses, College of Animal Sciences and Veterinary Medicine, Jilin University, Changchun, Jilin 130062, China; E-Mails: (H.X.); (J.-Z.Q.)
| | - Da-Cheng Wang
- Institute of Zoonoses, College of Animal Sciences and Veterinary Medicine, Jilin University, Changchun, Jilin 130062, China; E-Mails: (H.X.); (J.-Z.Q.)
| | - You-Shuai Jiang
- College of Life Science and Technology, Heilongjiang August First Agricultural University, Daqing, Heilongjiang 163319, China; E-Mail: (Y.-S.J.)
| | - Li-Jie Xia
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangshu 225009, China; E-Mail: (L.-J.X.)
| | - Xu-Ming Deng
- Institute of Zoonoses, College of Animal Sciences and Veterinary Medicine, Jilin University, Changchun, Jilin 130062, China; E-Mails: (H.X.); (J.-Z.Q.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86 431 87836161; Fax: +86 431 87836160
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Yi L, Guo JM, Zhang JH, Qiu JZ, Wang WQ, Gu RP. [Repair of cleft palate in 16 infants: Clinical outcomes]. Shanghai Kou Qiang Yi Xue 1996; 5:181. [PMID: 15160020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- L Yi
- Department of Dentistry, Qingdao Astyclinic. Qingdao 266003, China
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