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Zhang Y, Yang L, Xue S, Zhang Y, Li Z, Zhang M, Kai G, Li J. Effect of Curcuma longa extract on reproduction function in mice and testosterone production in Leydig cells. J Cell Mol Med 2024; 28:e18303. [PMID: 38613362 PMCID: PMC11015391 DOI: 10.1111/jcmm.18303] [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: 11/23/2023] [Revised: 02/23/2024] [Accepted: 03/13/2024] [Indexed: 04/14/2024] Open
Abstract
Curcuma longa, best known for its culinary application as the main constituent of curry powder, has shown potential impact on the reproductive system. This study aimed to investigate the efficacy of Curcuma longa extract (CLE) on Kidney-Yang deficiency mice induced by hydrocortisone and the possible roles in testosterone secretion in Leydig cells. We evaluated male sexual behaviour, reproductive organ weight, testosterone levels, and histological tissue changes in hydrocortisone-induced mice. CLE effectively reversed hydrocortisone-induced Kidney-Yang deficiency syndrome by improving sexual behaviour, testis and epididymis weight, testosterone levels and reducing pathological damage. Our in vitro study further indicated that CLE stimulated testosterone production via upregulating the mRNA and protein expression of steroidogenic enzymes in Leydig cells. It significantly improved H89-inhibited protein expression of StAR and cAMP-response element-binding (CREB), as well as melatonin-suppressed StAR protein expression. The data obtained from this study suggest that CLE could alleviate Kidney-Yang deficiency symptoms and stimulate testosterone production by upregulating the steroidogenic pathway. This research identifies CLE as a potential nutraceutical option for addressing testosterone deficiency diseases.
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Affiliation(s)
- Yisheng Zhang
- Department of PharmacyWuhan Hospital of Traditional Chinese MedicineWuhanHubeiChina
| | - Liu Yang
- Department of PharmacyWuhan Hospital of Traditional Chinese MedicineWuhanHubeiChina
- Hubei Province Key Laboratory of Traditional Chinese Medicine Resource and Chemistry, Hubei Shizhen Laboratory, Hubei University of Chinese MedicineWuhanHubeiChina
| | - Shan Xue
- Hubei Province Key Laboratory of Traditional Chinese Medicine Resource and Chemistry, Hubei Shizhen Laboratory, Hubei University of Chinese MedicineWuhanHubeiChina
| | - Yichang Zhang
- Hubei Province Key Laboratory of Traditional Chinese Medicine Resource and Chemistry, Hubei Shizhen Laboratory, Hubei University of Chinese MedicineWuhanHubeiChina
| | - Zihan Li
- Hubei Province Key Laboratory of Traditional Chinese Medicine Resource and Chemistry, Hubei Shizhen Laboratory, Hubei University of Chinese MedicineWuhanHubeiChina
| | - Min Zhang
- Hubei Province Key Laboratory of Traditional Chinese Medicine Resource and Chemistry, Hubei Shizhen Laboratory, Hubei University of Chinese MedicineWuhanHubeiChina
| | - Guoyin Kai
- College of pharmacyZhejiang Chinese Medical UniversityHangzhouZhejiangChina
| | - Juan Li
- Hubei Province Key Laboratory of Traditional Chinese Medicine Resource and Chemistry, Hubei Shizhen Laboratory, Hubei University of Chinese MedicineWuhanHubeiChina
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Confessor MVA, Agreles MAA, Campos LADA, Silva Neto AF, Borges JC, Martins RM, Scavuzzi AML, Lopes ACS, Kretzschmar EADM, Cavalcanti IMF. Olive oil nanoemulsion containing curcumin: antimicrobial agent against multidrug-resistant bacteria. Appl Microbiol Biotechnol 2024; 108:241. [PMID: 38413482 PMCID: PMC10899360 DOI: 10.1007/s00253-024-13057-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] [Received: 07/22/2023] [Revised: 01/21/2024] [Accepted: 02/06/2024] [Indexed: 02/29/2024]
Abstract
The present work aimed to develop, characterize, and evaluate the antibacterial and antibiofilm activity of two nanoemulsions (NEs) containing 500 µg/mL of curcumin from Curcuma longa (CUR). These NEs, produced with heating, contain olive oil (5%) and the surfactants tween 80 (5%) and span 80 (2.5%), water q.s. 100 mL, and were stable for 120 days. NE-2-CUR presented Ø of 165.40 ± 2.56 nm, PDI of 0.254, ζ of - 33.20 ± 1.35 mV, pH of 6.49, and Entrapment Drug Efficiency (EE) of 99%. The NE-4-CUR showed a Ø of 105.70 ± 4.13 nm, PDI of 0.459, ζ of - 32.10 ± 1.45 mV, pH of 6.40 and EE of 99.29%. Structural characterization was performed using DRX and FTIR, thermal characterization using DSC and TG, and morphological characterization using SEM, suggesting that there is no significant change in the CUR present in the NEs and that they remain stable. The MIC was performed by the broth microdilution method for nine gram-positive and gram-negative bacteria, as well as Klebsiella pneumoniae clinical isolates resistant to antibiotics and biofilm and efflux pump producers. The NEs mostly showed a bacteriostatic profile. The MIC varied between 125 and 250 µg/mL. The most sensitive bacteria were Staphylococcus aureus and Enterococcus faecalis, for which NE-2-CUR showed a MIC of 125 µg/mL. The NEs and ceftazidime (CAZ) interaction was also evaluated against the K. pneumoniae resistant clinical isolates using the Checkerboard method. NE-2-CUR and NE-4-CUR showed a synergistic or additive profile; there was a reduction in CAZ MICs between 256 times (K26-A2) and 2 times (K29-A2). Furthermore, the NEs inhibited these isolates biofilms formation. The NEs showed a MBIC ranging from 15.625 to 250 µg/mL. Thus, the NEs showed physicochemical characteristics suitable for future clinical trials, enhancing the CAZ antibacterial and antibiofilm activity, thus becoming a promising strategy for the treatment of bacterial infections caused by multidrug-resistant K. pneumoniae. KEY POINTS: • The NEs showed physicochemical characteristics suitable for future clinical trials. • The NEs showed a synergistic/additive profile, when associated with ceftazidime. • The NEs inhibited biofilm formation of clinical isolates.
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Affiliation(s)
- Maine Virgínia Alves Confessor
- Keizo Asami Institute (iLIKA), Federal University of Pernambuco (UFPE), Prof. Moraes Rego Avenue, 1235, Cidade Universitária, CEP, Recife, Pernambuco, 50670-901, Brazil.
- University Center UNIFACISA, Manoel Cardoso Palhano, 124-152, Itararé, CEP, Campina Grande, Paraiba, 58408-326, Brazil.
| | - Maria Anndressa Alves Agreles
- Keizo Asami Institute (iLIKA), Federal University of Pernambuco (UFPE), Prof. Moraes Rego Avenue, 1235, Cidade Universitária, CEP, Recife, Pernambuco, 50670-901, Brazil
| | - Luís André de Almeida Campos
- Keizo Asami Institute (iLIKA), Federal University of Pernambuco (UFPE), Prof. Moraes Rego Avenue, 1235, Cidade Universitária, CEP, Recife, Pernambuco, 50670-901, Brazil
| | - Azael Francisco Silva Neto
- Keizo Asami Institute (iLIKA), Federal University of Pernambuco (UFPE), Prof. Moraes Rego Avenue, 1235, Cidade Universitária, CEP, Recife, Pernambuco, 50670-901, Brazil
| | - Joyce Cordeiro Borges
- Keizo Asami Institute (iLIKA), Federal University of Pernambuco (UFPE), Prof. Moraes Rego Avenue, 1235, Cidade Universitária, CEP, Recife, Pernambuco, 50670-901, Brazil
| | - Rodrigo Molina Martins
- University Center UNIFACISA, Manoel Cardoso Palhano, 124-152, Itararé, CEP, Campina Grande, Paraiba, 58408-326, Brazil
| | | | - Ana Catarina Souza Lopes
- Department of Tropical Medicine, Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil
| | | | - Isabella Macário Ferro Cavalcanti
- Keizo Asami Institute (iLIKA), Federal University of Pernambuco (UFPE), Prof. Moraes Rego Avenue, 1235, Cidade Universitária, CEP, Recife, Pernambuco, 50670-901, Brazil
- Laboratory of Microbiology and Immunology, Academic Center of Vitória (CAV), Federal University of Pernambuco (UFPE), Vitória de Santo Antão, Pernambuco, Brazil
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The aphrodisiac potential of β-cyclodextrin-curcumin via stimulating cAMP-PKA pathway in testicular Leydig cells. Sci Rep 2022; 12:14263. [PMID: 35995927 PMCID: PMC9395524 DOI: 10.1038/s41598-022-18065-3] [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: 02/02/2022] [Accepted: 08/04/2022] [Indexed: 12/04/2022] Open
Abstract
The water-soluble β-cyclodextrin–curcumin (CDC) is used in pharmaceutical applications and as a natural food colorant. The previous study revealed that curcumin potentially impacted the reproductive system. The present study investigated the possible roles of the CDC in testosterone secretion in Leydig cells and mice. Primary Leydig cells were treated with the CDC to determine their effect on cell proliferation, testosterone levels, the protein and mRNA expression of the transcription factor, and steroidogenic enzymes. Our data showed that CDC stimulated testosterone production via upregulating transcription factor steroidogenic factor-1 (NR5A1), cAMP-response element-binding protein (CREB), and steroidogenic enzymes steroidogenic acute regulatory protein (StAR), cholesterol side-chain cleavage enzyme (CYP11A1), 17-alpha-hydroxylase/17,20-lyase (CYP17A1), 3β-/17β-hydroxysteroid dehydrogenase type 1 (3β/17β-HSD, HSD3b1/HSD17b1). CDC could significantly stimulate H89-suppressed StAR and CREB expression but not reverse melatonin-suppressed StAR expression. We further detected the hormonal activity with transgenic yeast, and CDC showed potential androgenic antagonistic activity. Meanwhile, we investigated its aphrodisiac effect on hydrocortisone-induced mice. Exposure to hydrocortisone decreased the mating ability, reproductive organs, and testosterone level and disrupted testicular histology. However, all of these effects were significantly improved by CDC treatment. In conclusion, these results indicated that mechanisms of CDC in stimulating testosterone production involve upregulating the cAMP-PKA pathway.
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Sohn SI, Priya A, Balasubramaniam B, Muthuramalingam P, Sivasankar C, Selvaraj A, Valliammai A, Jothi R, Pandian S. Biomedical Applications and Bioavailability of Curcumin-An Updated Overview. Pharmaceutics 2021; 13:2102. [PMID: 34959384 PMCID: PMC8703330 DOI: 10.3390/pharmaceutics13122102] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 11/25/2021] [Accepted: 12/03/2021] [Indexed: 02/07/2023] Open
Abstract
Curcumin, a yellow-colored molecule derived from the rhizome of Curcuma longa, has been identified as the bioactive compound responsible for numerous pharmacological activities of turmeric, including anticancer, antimicrobial, anti-inflammatory, antioxidant, antidiabetic, etc. Nevertheless, the clinical application of curcumin is inadequate due to its low solubility, poor absorption, rapid metabolism and elimination. Advancements in recent research have shown several components and techniques to increase the bioavailability of curcumin. Combining with adjuvants, encapsulating in carriers and formulating in nanoforms, in combination with other bioactive agents, synthetic derivatives and structural analogs of curcumin, have shown increased efficiency and bioavailability, thereby augmenting the range of applications of curcumin. The scope for incorporating biotechnology and nanotechnology in amending the current drawbacks would help in expanding the biomedical applications and clinical efficacy of curcumin. Therefore, in this review, we provide a comprehensive overview of the plethora of therapeutic potentials of curcumin, their drawbacks in efficient clinical applications and the recent advancements in improving curcumin's bioavailability for effective use in various biomedical applications.
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Affiliation(s)
- Soo-In Sohn
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Korea
| | - Arumugam Priya
- Department of Biotechnology, Alagappa University, Karaikudi 630003, India; (A.P.); (P.M.); (R.J.)
| | | | - Pandiyan Muthuramalingam
- Department of Biotechnology, Alagappa University, Karaikudi 630003, India; (A.P.); (P.M.); (R.J.)
- Department of Biotechnology, Sri Shakthi Institute of Engineering and Technology, Coimbatore 641062, India
| | - Chandran Sivasankar
- Department of Food Science and Technology, Pondicherry University, Pondicherry 605014, India;
| | - Anthonymuthu Selvaraj
- Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA;
| | - Alaguvel Valliammai
- Department of Environmental Hydrology and Microbiology, Ben-Gurion University of the Negev, Beersheba 84990, Israel;
| | - Ravi Jothi
- Department of Biotechnology, Alagappa University, Karaikudi 630003, India; (A.P.); (P.M.); (R.J.)
| | - Subramani Pandian
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Korea
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Zhang C, Qin K, Zheng X, Luo Q, Zhang Q, Ji X, Wei Y. Synthesis of carbon dots with antiphage activity using caffeic acid. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:5165-5172. [PMID: 34677564 DOI: 10.1039/d1ay01380g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Recent studies on preservation properties in the field of materials science suggest that a newly synthesized material can retain the biological properties of the raw material. Still, further study is necessary since these features critically influence research at the intersection of materials science and biology, and could provide a unique research direction for the synthesis of new materials. Thus, caffeic acid (CA) is used as a raw material to synthesize novel carbon quantum dots (CA-CDs) using a simple and rapid hydrothermal method. CA-CDs exhibit antiphage and antibacterial activities. Using three types of phages as models, it is confirmed that CA-CDs inhibit phage proliferation. The viral titres decline by 4, 5, or 6 orders of magnitude, and CA-CDs display potential universal antiphage ability; the mechanism suggests that the CA-CDs could change the protein structure of these phages and impact the phage adsorption stage leading to loss of infectivity. Meanwhile, the antibacterial activity is retained in CA-CDs, significantly inhibiting the growth of Gram-positive bacteria; this also reveals the preservation properties of CA-CDs. CA-CDs synthesized from CA, does not only expand the range of antiviral activity but also increases its many unique optical properties as a carbon dot material. This finding is meaningful in order to promote the development of new CDs with remarkable biological activity and acts as a basis for future scientific research on novel and alternative antiviral treatments.
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Affiliation(s)
- Chunting Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China.
| | - Kunhao Qin
- Shenzhen Institute of Respiratory Diseases, The Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen 518020, China
| | - Xiaodan Zheng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China.
| | - Qian Luo
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China.
| | - Qi Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China.
| | - Xiuling Ji
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China.
| | - Yunlin Wei
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China.
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Latest Innovations and Nanotechnologies with Curcumin as a Nature-Inspired Photosensitizer Applied in the Photodynamic Therapy of Cancer. Pharmaceutics 2021; 13:pharmaceutics13101562. [PMID: 34683855 PMCID: PMC8539945 DOI: 10.3390/pharmaceutics13101562] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 09/15/2021] [Accepted: 09/22/2021] [Indexed: 12/27/2022] Open
Abstract
In the context of the high incidence of cancer worldwide, state-of-the-art photodynamic therapy (PDT) has entered as a usual protocol of attempting to eradicate cancer as a minimally invasive procedure, along with pharmacological resources and radiation therapy. The photosensitizer (PS) excited at certain wavelengths of the applied light source, in the presence of oxygen releases several free radicals and various oxidation products with high cytotoxic potential, which will lead to cell death in irradiated cancerous tissues. Current research focuses on the potential of natural products as a superior generation of photosensitizers, which through the latest nanotechnologies target tumors better, are less toxic to neighboring tissues, but at the same time, have improved light absorption for the more aggressive and widespread forms of cancer. Curcumin incorporated into nanotechnologies has a higher intracellular absorption, a higher targeting rate, increased toxicity to tumor cells, accelerates the activity of caspases and DNA cleavage, decreases the mitochondrial activity of cancer cells, decreases their viability and proliferation, decreases angiogenesis, and finally induces apoptosis. It reduces the size of the primary tumor, reverses multidrug resistance in chemotherapy and decreases resistance to radiation therapy in neoplasms. Current research has shown that the use of PDT and nanoformulations of curcumin has a modulating effect on ROS generation, so light or laser irradiation will lead to excessive ROS growth, while nanocurcumin will reduce the activation of ROS-producing enzymes or will determine the quick removal of ROS, seemingly opposite but synergistic phenomena by inducing neoplasm apoptosis, but at the same time, accelerating the repair of nearby tissue. The latest curcumin nanoformulations have a huge potential to optimize PDT, to overcome major side effects, resistance to chemotherapy, relapses and metastases. All the studies reviewed and presented revealed great potential for the applicability of nanoformulations of curcumin and PDT in cancer therapy.
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Trigo-Gutierrez JK, Vega-Chacón Y, Soares AB, Mima EGDO. Antimicrobial Activity of Curcumin in Nanoformulations: A Comprehensive Review. Int J Mol Sci 2021; 22:7130. [PMID: 34281181 PMCID: PMC8267827 DOI: 10.3390/ijms22137130] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/21/2021] [Accepted: 06/28/2021] [Indexed: 01/10/2023] Open
Abstract
Curcumin (CUR) is a natural substance extracted from turmeric that has antimicrobial properties. Due to its ability to absorb light in the blue spectrum, CUR is also used as a photosensitizer (PS) in antimicrobial Photodynamic Therapy (aPDT). However, CUR is hydrophobic, unstable in solutions, and has low bioavailability, which hinders its clinical use. To circumvent these drawbacks, drug delivery systems (DDSs) have been used. In this review, we summarize the DDSs used to carry CUR and their antimicrobial effect against viruses, bacteria, and fungi, including drug-resistant strains and emergent pathogens such as SARS-CoV-2. The reviewed DDSs include colloidal (micelles, liposomes, nanoemulsions, cyclodextrins, chitosan, and other polymeric nanoparticles), metallic, and mesoporous particles, as well as graphene, quantum dots, and hybrid nanosystems such as films and hydrogels. Free (non-encapsulated) CUR and CUR loaded in DDSs have a broad-spectrum antimicrobial action when used alone or as a PS in aPDT. They also show low cytotoxicity, in vivo biocompatibility, and improved wound healing. Although there are several in vitro and some in vivo investigations describing the nanotechnological aspects and the potential antimicrobial application of CUR-loaded DDSs, clinical trials are not reported and further studies should translate this evidence to the clinical scenarios of infections.
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Affiliation(s)
| | | | | | - Ewerton Garcia de Oliveira Mima
- Laboratory of Applied Microbiology, Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (Unesp), Araraquara 14800-000, Brazil; (J.K.T.-G.); (Y.V.-C.); (A.B.S.)
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Reddy DNK, Huang FY, Wang SP, Kumar R. Synergistic Antioxidant and Antibacterial Activity of Curcumin-C3 Encapsulated Chitosan Nanoparticles. Curr Pharm Des 2021; 26:5021-5029. [PMID: 32516096 DOI: 10.2174/1381612826666200609164830] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 05/14/2020] [Indexed: 01/01/2023]
Abstract
BACKGROUND Recent studies have focused on the nanoformulations of curcumin to enhance its solubility and bioavailability. The medicinal properties of curcumin-C3 complex, which is a combination of three curcuminoids (curcumin, demethoxycurcumin and bisdemethoxycurcumin) is less explored. OBJECTIVE The aim of this study was to prepare curcumin-C3 encapsulated in chitosan nanoparticles, characterize and evaluate their antioxidant and antibacterial potential. METHODS Ionic gelation method was used to prepare curcumin-C3 nanoparticles and was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy and nanoparticle tracking analysis. In vitro assays were performed to assess drug release, antioxidant and antibacterial activities. RESULTS Curcumin-C3-chitosan nanoparticle showed an increased entrapment efficiency of >90%, drug release and improved antioxidant potential. Moreover, curcumin-C3-chitosan nanoparticle showed stronger inhibition of Escherichia coli and Staphylococcus aureus. CONCLUSION Chitosan is a suitable carrier for curcumin-C3 nanoparticle and can be used as a drug delivery system in the treatment of inflammatory and bacterial diseases.
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Affiliation(s)
- Desu N K Reddy
- Department of Chemistry, College of Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Fu-Yung Huang
- Department of Chemistry, College of Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Shao-Pin Wang
- Department of Chemistry, College of Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Ramya Kumar
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
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Luo Q, Qin K, Liu F, Zheng X, Ding Y, Zhang C, Xu M, Liu X, Wei Y. Carbon dots derived from kanamycin sulfate with antibacterial activity and selectivity for Cr 6+ detection. Analyst 2021; 146:1965-1972. [PMID: 33496685 DOI: 10.1039/d0an02352c] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Among antibacterial nanomaterials, carbon dots (CDs) have attracted much attention because of their unique physical and chemical properties and good biosafety. In this study, kanamycin sulfate (Kan), a broad-spectrum antibiotic, was used to synthesize novel carbon dots (CDs-Kan) by a one-step hydrothermal method. CDs-Kan showed good inhibitory effects on Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus. Further, scanning electron microscopy revealed that treatment with CDs-Kan and Kan resulted in the same phenomena. In particular, the morphologies of S. aureus cells treated with CDs-Kan and Kan became smaller and irregular, whereas the surfaces of E. coli cells protruded and formed vesicles. These results indicated that CDs-Kan was shown to retain the good antibacterial activity of Kan as well as its main bactericidal functional groups, namely, the amino sugar and amino cyclic alcohol, We refer to this phenomenon as the "preservation property". We also found that CDs-Kan has good biocompatibility and nontoxic properties. Moreover, CDs-Kan was successfully applied to the biological imaging of fungi and plant cells. In addition, CDs-Kan could be used as a fluorescent probe for the quick, sensitive, and selective detection of Cr6+. Therefore, CDs-Kan not only retained the good bacteriostatic properties of Kan but also expanded its application in bioimaging and biosensors.
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Affiliation(s)
- Qian Luo
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China.
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Inoue Y, Suzuki R, Murata I, Nomura H, Isshiki Y, Kanamoto I. Evaluation of Antibacterial Activity Expression of the Hinokitiol/Cyclodextrin Complex Against Bacteria. ACS OMEGA 2020; 5:27180-27187. [PMID: 33134678 PMCID: PMC7594135 DOI: 10.1021/acsomega.0c03222] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 10/06/2020] [Indexed: 05/12/2023]
Abstract
The purpose of this study was to assess the antimicrobial activity of a solid dispersion prepared by mixing and grinding hinokitiol (HT) with α-cyclodextrin (αCD), β-cyclodextrin (βCD), or γ-cyclodextrin (γCD). Antimicrobial activity was evaluated by calculating the minimum inhibitory concentration (MIC) and evaluating the change in the number of bacteria over time. The test microbes used were two Gram-positive bacteria (Bacillus subtilis and Staphylococcus aureus), two Gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa), and two fungi (Candida albicans and Aspergillus brasiliensis). Calculation of the MIC value of HT using the agar dilution method revealed that the MIC of HT/CD inclusion complexes was lower than that of HT alone. HT irreversibly inhibited the growth of microorganisms in a short amount of time. HT/CD complexes retained the antimicrobial activity of HT as a result of including HT in a CD complex. These results suggest that inclusion of HT, an antimicrobial component, using CDs could lead to appropriate control of the drug release rate and efficient display of antimicrobial activity.
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Affiliation(s)
- Yutaka Inoue
- Laboratory
of Drug Safety Management, Faculty of Pharmacy and Pharmaceutical
Sciences, Josai University, 1-1 Keyakidai, Sakado-shi, Saitama 3500295, Japan
- . Tel: +81-49-271-7317. Fax: +81-49-271-7317
| | - Rina Suzuki
- Laboratory
of Drug Safety Management, Faculty of Pharmacy and Pharmaceutical
Sciences, Josai University, 1-1 Keyakidai, Sakado-shi, Saitama 3500295, Japan
| | - Isamu Murata
- Laboratory
of Drug Safety Management, Faculty of Pharmacy and Pharmaceutical
Sciences, Josai University, 1-1 Keyakidai, Sakado-shi, Saitama 3500295, Japan
| | - Harue Nomura
- Department
of Microbiology, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado-shi, Saitama 3500295, Japan
| | - Yasunori Isshiki
- Department
of Microbiology, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado-shi, Saitama 3500295, Japan
| | - Ikuo Kanamoto
- Laboratory
of Drug Safety Management, Faculty of Pharmacy and Pharmaceutical
Sciences, Josai University, 1-1 Keyakidai, Sakado-shi, Saitama 3500295, Japan
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