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Caudal F, Roullier C, Rodrigues S, Dufour A, Artigaud S, Le Blay G, Bazire A, Petek S. Anti-Biofilm Extracts and Molecules from the Marine Environment. Mar Drugs 2024; 22:313. [PMID: 39057422 PMCID: PMC11278325 DOI: 10.3390/md22070313] [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: 05/28/2024] [Revised: 07/02/2024] [Accepted: 07/06/2024] [Indexed: 07/28/2024] Open
Abstract
Pathogenic bacteria and their biofilms are involved in many diseases and represent a major public health problem, including the development of antibiotic resistance. These biofilms are known to cause chronic infections for which conventional antibiotic treatments are often ineffective. The search for new molecules and innovative solutions to combat these pathogens and their biofilms has therefore become an urgent need. The use of molecules with anti-biofilm activity would be a potential solution to these problems. The marine world is rich in micro- and macro-organisms capable of producing secondary metabolites with original skeletons. An interest in the chemical strategies used by some of these organisms to regulate and/or protect themselves against pathogenic bacteria and their biofilms could lead to the development of bioinspired, eco-responsible solutions. Through this original review, we listed and sorted the various molecules and extracts from marine organisms that have been described in the literature as having strictly anti-biofilm activity, without bactericidal activity.
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Affiliation(s)
- Flore Caudal
- Laboratoire de Biotechnologie et Chimie Marines, Université Bretagne Sud, EMR CNRS 6076, IUEM, 56100 Lorient, France; (F.C.); (S.R.); (A.D.)
- IRD, Univ Brest, CNRS, Ifremer, LEMAR, IUEM, 29280 Plouzane, France; (S.A.); (G.L.B.)
| | - Catherine Roullier
- Institut des Substances et Organismes de la Mer, Nantes Université, ISOMER, UR 2160, 40000 Nantes, France;
| | - Sophie Rodrigues
- Laboratoire de Biotechnologie et Chimie Marines, Université Bretagne Sud, EMR CNRS 6076, IUEM, 56100 Lorient, France; (F.C.); (S.R.); (A.D.)
| | - Alain Dufour
- Laboratoire de Biotechnologie et Chimie Marines, Université Bretagne Sud, EMR CNRS 6076, IUEM, 56100 Lorient, France; (F.C.); (S.R.); (A.D.)
| | - Sébastien Artigaud
- IRD, Univ Brest, CNRS, Ifremer, LEMAR, IUEM, 29280 Plouzane, France; (S.A.); (G.L.B.)
| | - Gwenaelle Le Blay
- IRD, Univ Brest, CNRS, Ifremer, LEMAR, IUEM, 29280 Plouzane, France; (S.A.); (G.L.B.)
| | - Alexis Bazire
- Laboratoire de Biotechnologie et Chimie Marines, Université Bretagne Sud, EMR CNRS 6076, IUEM, 56100 Lorient, France; (F.C.); (S.R.); (A.D.)
| | - Sylvain Petek
- IRD, Univ Brest, CNRS, Ifremer, LEMAR, IUEM, 29280 Plouzane, France; (S.A.); (G.L.B.)
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Liu W, Wang Y, Sun Y, Xia W, Qian X, Bo R, Huang Y, Ruan X. Baicalein inhibits biofilm formation of avian pathogenic Escherichia coli in vitro mainly by affecting adhesion. Res Vet Sci 2024; 174:105291. [PMID: 38729095 DOI: 10.1016/j.rvsc.2024.105291] [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: 03/10/2024] [Revised: 04/20/2024] [Accepted: 05/05/2024] [Indexed: 05/12/2024]
Abstract
Avian pathogenic Escherichia coli (APEC) is a widespread bacterium that causes significant economic losses to the poultry industry. APEC biofilm formation may result in chronic, persistent, and recurrent infections in clinics, making treatment challenging. Baicalein is a natural product that exhibits antimicrobial and antibiofilm activities. This study investigates the inhibitory effect of baicalein on APEC biofilm formation at different stages. The minimum inhibitory concentration (MIC) of baicalein on APEC was determined, and the growth curve of APEC biofilm formation was determined. The effects of baicalein on APEC biofilm adhesion, accumulation, and maturation were observed using optical microscopy, confocal laser scanning microscopy, and scanning electron microscopy. The biofilm inhibition rate of baicalein was calculated at different stages. The MIC of baicalein against APEC was 256 μg/mL. The process of APEC biofilm maturation takes approximately 48 h after incubation, with initial adhesion completed at 12 h, and cell accumulation finished at 24 h. Baicalein had a significant inhibitory effect on APEC biofilm formation at concentrations above 1 μg/mL (p < 0.01). Notably, baicalein had the highest rate of biofilm formation inhibition when added at the adhesion stage. Therefore, it can be concluded that baicalein is a potent inhibitor of APEC biofilm formation in vitro and acts, primarily by inhibiting cell adhesion. These findings suggests that baicalein has a potential application for inhibiting APEC biofilm formation and provides a novel approach for the prevention and control APEC-related diseases.
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Affiliation(s)
- Wanru Liu
- Laboratory of Veterinary Pharmacology and Toxicology, College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui Province 230036, China
| | - Yufang Wang
- Laboratory of Veterinary Pharmacology and Toxicology, College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui Province 230036, China
| | - Ying Sun
- Laboratory of Veterinary Pharmacology and Toxicology, College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui Province 230036, China
| | - Wenjie Xia
- Laboratory of Veterinary Pharmacology and Toxicology, College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui Province 230036, China
| | - Xiaoyue Qian
- Laboratory of Veterinary Pharmacology and Toxicology, College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui Province 230036, China
| | - Ruihong Bo
- Laboratory of Veterinary Pharmacology and Toxicology, College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui Province 230036, China
| | - Yuanyuan Huang
- Laboratory of Veterinary Pharmacology and Toxicology, College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui Province 230036, China
| | - Xiangchun Ruan
- Laboratory of Veterinary Pharmacology and Toxicology, College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, Hefei, Anhui Province 230036, China.
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Hang S, Lu H, Jiang Y. Marine-Derived Metabolites Act as Promising Antifungal Agents. Mar Drugs 2024; 22:180. [PMID: 38667797 PMCID: PMC11051449 DOI: 10.3390/md22040180] [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: 03/20/2024] [Revised: 04/11/2024] [Accepted: 04/13/2024] [Indexed: 04/28/2024] Open
Abstract
The incidence of invasive fungal diseases (IFDs) is on the rise globally, particularly among immunocompromised patients, leading to significant morbidity and mortality. Current clinical antifungal agents, such as polyenes, azoles, and echinocandins, face increasing resistance from pathogenic fungi. Therefore, there is a pressing need for the development of novel antifungal drugs. Marine-derived secondary metabolites represent valuable resources that are characterized by varied chemical structures and pharmacological activities. While numerous compounds exhibiting promising antifungal activity have been identified, a comprehensive review elucidating their specific underlying mechanisms remains lacking. In this review, we have compiled a summary of antifungal compounds derived from marine organisms, highlighting their diverse mechanisms of action targeting various fungal cellular components, including the cell wall, cell membrane, mitochondria, chromosomes, drug efflux pumps, and several biological processes, including vesicular trafficking and the growth of hyphae and biofilms. This review is helpful for the subsequent development of antifungal drugs due to its summary of the antifungal mechanisms of secondary metabolites from marine organisms.
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Affiliation(s)
| | - Hui Lu
- Department of Pharmacy, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, 200092 Shanghai, China
| | - Yuanying Jiang
- Department of Pharmacy, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, 200092 Shanghai, China
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Guo W, Xu Y, Yang Y, Xiang J, Chen J, Luo D, Xie Q. Antibiofilm Effects of Oleuropein against Staphylococcus aureus: An In Vitro Study. Foods 2023; 12:4301. [PMID: 38231779 DOI: 10.3390/foods12234301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 11/23/2023] [Accepted: 11/27/2023] [Indexed: 01/19/2024] Open
Abstract
Staphylococcus aureus has posed a huge threat to human health and the economy. Oleuropein has antibacterial activities against various microorganisms but research on its effect on the S. aureus biofilm is limited. This research aimed to estimate the antibiofilm activities of oleuropein against S. aureus. The results suggest that the minimum inhibitory concentration of oleuropein against S. aureus ATCC 25923 was 3 mg/mL. The biomass of biofilms formed on the microplates and coverslips and the viability of bacteria were significantly reduced after the treatment with oleuropein. The scanning electron microscopy observation results indicated that the stacking thickness and density of the biofilm decreased when S. aureus was exposed to oleuropein. It had a bactericidal effect on biofilm bacteria and removed polysaccharides and proteins from mature biofilms. The effects of oleuropein on the biofilm could be explained by a reduction in bacterial secretion of extracellular polymeric substances and a change in bacterial surface hydrophobicity. Based on the above findings, oleuropein has the potential to be used against food pollution caused by S. aureus biofilms.
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Affiliation(s)
- Weiping Guo
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Yunfeng Xu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Yangyang Yang
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Jinle Xiang
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Junliang Chen
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Denglin Luo
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Qinggang Xie
- Heilongjiang Feihe Dairy Co., Ltd., Beijing 100015, China
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Spiliopoulou A, Lekkou A, Vrioni G, Leonidou L, Cogliati M, Christofidou M, Marangos M, Kolonitsiou F, Paliogianni F. Fungemia due to rare non-Candida yeasts between 2018 and 2021 in a Greek tertiary care university hospital. J Mycol Med 2023; 33:101386. [PMID: 37031651 DOI: 10.1016/j.mycmed.2023.101386] [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: 11/27/2022] [Revised: 04/01/2023] [Accepted: 04/02/2023] [Indexed: 04/05/2023]
Abstract
INTRODUCTION Non-Candida yeasts, although rare, are increasingly encountered and recognized as a growing threat. METHODS Cases of bloodstream infections (BSIs) due to non-Candida yeasts (NCYs) during the last four years (2018-2021) are presented. RESULTS During the study period, 16 cases caused by non-Candida yeasts out of 400 cases of yeast BSIs were recorded, corresponding to an incidence of 4%. Yeasts that were isolated included Cryptococcus spp (4 isolates-25%), Rhodotorula mucilaginosa (2 isolates-12.5%), Trichosporon asahii (7 isolates-43.75%) and Saccharomyces cerevisiae (3 isolates-18.75%). Predisposing factors involved mostly hematological malignancies, long term hospitalization or major surgical interventions. Most isolates, 15 out of 16 were susceptible to amphotericin B. Voriconazole was the most active azole in vitro. All isolates, except Saccharomyces spp., were resistant to echinocandins. DISCUSSION Early recognition of rare yeasts as causative agents of BSIs and prompt initiation of appropriate treatment based on current guidelines and expertise remain crucial in efficient patient management.
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Affiliation(s)
| | - Alexandra Lekkou
- Dept of Infectious Diseases, University Hospital of Patras, Patras, Greece
| | - Georgia Vrioni
- Dept of Microbiology, National and Kapodistrian University of Athens, Athens, Greece
| | - Lydia Leonidou
- Dept of Infectious Diseases, University Hospital of Patras, Patras, Greece
| | - Massimo Cogliati
- Dip. Scienze Biomediche per la Salute, Università degli Studi di Milano, Milano, Italy
| | | | - Markos Marangos
- Dept of Infectious Diseases, University Hospital of Patras, Patras, Greece
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Spiliopoulou A, Kolonitsiou F, Vrioni G, Tsoupra S, Lekkou A, Paliogianni F. Invasive Candida kefyr infection presenting as pyelonephritis in an ICU hospitalized COVID-19 patient: Case report and review of the literature. J Mycol Med 2021; 32:101236. [PMID: 34974339 PMCID: PMC8694783 DOI: 10.1016/j.mycmed.2021.101236] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 12/19/2021] [Accepted: 12/20/2021] [Indexed: 11/29/2022]
Abstract
Candida kefyr (Kluyveromyces marxianus), an ascomycetous environmental yeast, occasionally isolated from dairy products, represents an uncommon but emerging pathogen in immunocompromised patients. Herein, we present a case of C. kefyr pyelonephritis in a 41-year-old, previously immunocompetent, patient who was hospitalized in an COVID-19 ICU. Pyelonephritis was associated with caliectasis and obstruction due to possible fungus ball formation. Predisposing factors included ICU stay, use of broad spectrum antibiotics and steroids, central venous catheterization, mechanical ventilation and urologic manipulation. Susceptibility testing revealed high MIC values to amphotericin B. Infection was effectively controlled by prolonged administration of fluconazole without further surgical intervention. COVID-19 complicated with invasive candidiasis is an increasingly observed clinical situation that warrants high suspicion index and careful evaluation of laboratory data.
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Affiliation(s)
| | | | - Georgia Vrioni
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Stamatia Tsoupra
- Department of Internal Medicine, University Hospital of Patras, Greece
| | - Alexandra Lekkou
- Department of Internal Medicine, Division of Infectious Diseases, University Hospital of Patras, Greece
| | - Fotini Paliogianni
- Department of Microbiology, University Hospital of Patras, Patras, Greece
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