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Silva Pereira RL, Campina FF, Costa MDS, Pereira da Cruz R, Sampaio de Freitas T, Lucas Dos Santos AT, Cruz BG, Maciel de Sena Júnior D, Campos Lima IK, Xavier MR, Rodrigues Teixeira AM, Alencar de Menezes IR, Quintans-Júnior LJ, Araújo AADS, Melo Coutinho HD. Antibacterial and modulatory activities of β-cyclodextrin complexed with (+)-β-citronellol against multidrug-resistant strains. Microb Pathog 2021; 156:104928. [PMID: 33957243 DOI: 10.1016/j.micpath.2021.104928] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 04/12/2021] [Accepted: 04/13/2021] [Indexed: 12/14/2022]
Abstract
The present study aimed to investigate the antibacterial and modulatory activities of (+)-β-citronellol (βCT), β-cyclodextrin (β-CD), and their complex βCT/β-CD and characterize them using infrared spectroscopy. Infrared spectra were recorded in the 750-4000 cm-1 region. The antibacterial effects of these compounds and their modulatory-antibiotic activities were determined using the minimum inhibitory concentration (MIC) test. Signatures of these pure compounds were detected in the infrared spectrum of the βCT/β-CD complex. The MIC of the βCT/β-CD complex against the tested strains was found to be 1024 μg/mL. The antagonistic and synergistic effects of these compounds were also observed using the modulation tests. βCT or β-CD alone did not exhibit any direct antibacterial activity. However, the βCT/β-CD complex in combination with gentamicin showed a synergistic effect against E. coli.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Alexandre Magno Rodrigues Teixeira
- Department of Biological Chemistry, Regional University of Cariri, Crato, CE, Brazil; Department of Physics, Regional University of Cariri, Juazeiro do Norte, CE, Brazil
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Andrade TA, Freitas TS, Araújo FO, Menezes PP, Dória GAA, Rabelo AS, Quintans-Júnior LJ, Santos MRV, Bezerra DP, Serafini MR, Menezes IRA, Nunes PS, Araújo AAS, Costa MS, Campina FF, Santos ATL, Silva ARP, Coutinho HDM. Physico-chemical characterization and antibacterial activity of inclusion complexes of Hyptis martiusii Benth essential oil in β-cyclodextrin. Biomed Pharmacother 2017; 89:201-207. [PMID: 28226293 DOI: 10.1016/j.biopha.2017.01.158] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 01/19/2017] [Accepted: 01/28/2017] [Indexed: 11/25/2022] Open
Abstract
Cyclodextrins (CDs) have been used as important pharmaceutical excipients for improve the physicochemical properties of the drugs of low solubility as the essential oil of Hyptis martiusii. This oil is important therapeutically, but the low solubility and bioavailability compromises your use. Therein, the aim of this study was to obtain and to characterize physico-chemically the samples obtained by physical mixture (PM), paste complexation (PC) and slurry complexation (SC) of the essential oil Hyptis martiusii (EOHM) in β-CD, and to compare the antibacterial and modulatory-antibiotic activity of products obtained and oil free. The physicochemical characterization was performed by differential scanning calorimetry (DSC), thermogravimetry/derivative thermogravimetry (TG/DTG), scanning electron microscopy (SEM), X-ray diffraction (XRD) and Karl Fischer titration. Additionally, the antibacterial tests were performed by microdilution technique. Thus, it was observed that the PM method showed low complexing capacity, unlike PC and SC in which it was observed the formation of inclusion complexes. In addition, the second stage of the TG/DTG curves showed that SC was the best method inclusion with mass loss of 6.9% over the PC that was 6.0%. The XRD results corroborate with the results above suggesting the formation of new solid phase and the SEM photomicrographs showed the porous surface of the samples PC and SC. The essential oil alone demonstrated an antibacterial and modulatory effect against the S. aureus and the Gram negative strain, respectively. However, the β-CD and the inclusion complex did not demonstrate any biological activity in the performed antibacterial assays.
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Affiliation(s)
| | - Thiago S Freitas
- Department of Biological Chemistry, Regional University of Cariri, Crato, Ceará, Brazil
| | | | - Paula P Menezes
- Pharmacy Department, Federal University of Sergipe, Sergipe, Brazil
| | | | | | | | - Márcio R V Santos
- Physiology Department, Federal University of Sergipe, Sergipe, Brazil
| | - Daniel P Bezerra
- Gonçalo Muniz Research Center, Oswaldo Cruz Foundation, Bahia, Brazil
| | | | - Irwin Rose A Menezes
- Department of Mineralogy and Geotectonics, Institute of Geosciences, University of SãoPaulo-SP, Brazil
| | | | | | - Maria S Costa
- Department of Biological Chemistry, Regional University of Cariri, Crato, Ceará, Brazil
| | - Fábia F Campina
- Department of Biological Chemistry, Regional University of Cariri, Crato, Ceará, Brazil
| | - Antonia T L Santos
- Department of Biological Chemistry, Regional University of Cariri, Crato, Ceará, Brazil
| | - Ana R P Silva
- Department of Biological Chemistry, Regional University of Cariri, Crato, Ceará, Brazil
| | - Henrique D M Coutinho
- Department of Biological Chemistry, Regional University of Cariri, Crato, Ceará, Brazil.
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Ledowski T. Sugammadex: What do we Know and What do we Still Need to Know? A Review of the Recent (2013 to 2014) Literature. Anaesth Intensive Care 2015; 43:14-22. [DOI: 10.1177/0310057x1504300104] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Since its launch in 2008, sugammadex has been considered one of the most significant developments in anaesthesia-related pharmacology. With almost 500 sugammadex-related publications and over nine million patient exposures worldwide, user experience and scientific data have grown exponentially. However, several important questions are yet to be answered. This article reviews the sugammadex-related literature in 2013 and 2014 to determine which of these questions have been answered more fully over the last 18 months and which questions require more information and research.
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Affiliation(s)
- T. Ledowski
- School of Medicine and Pharmacology, University of Western Australia, Crawley, Western Australia
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