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Suryawanshi VR, Pawar A, Purandare B, Vijayvargiya N, Sancheti S, Philip S, Nagare P. Microbial Profile, Antimicrobial Susceptibility, and Prevalence of MDR/XDR Pathogens Causing Medical Device Associated Infections: A Single Center Study. Indian J Crit Care Med 2024; 28:152-164. [PMID: 38323246 PMCID: PMC10839921 DOI: 10.5005/jp-journals-10071-24623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 12/04/2023] [Indexed: 02/08/2024] Open
Abstract
Background There is a scarcity of studies evaluating the microbial profile, antimicrobial susceptibility, and prevalence of MDR/XDR pathogens causing medical device-associated infections (MDAIs). The present study was sought in this regard. Materials and methods An ambispective-observational, site-specific, surveillance-based study was performed for a period of 2 years in the intensive care unit (ICU) and high dependency unit (HDU) (medicine/surgery) of a Tertiary-care University Hospital. Three commonly encountered MDAIs including central-line-associated bloodstream infections (CLABSI), catheter-associated urinary tract infections (CAUTI), and ventilator-associated pneumonia (VAP), were targeted. Results and conclusion Of the total 90 patients, 46 (51.1%) were admitted to the ICU (medicine/surgery), and the remaining 44 (48.8%) were admitted to the HDU (medicine/surgery). The median (P25-P75) age of the total patients was 55 (43.1-62.3) years. Male 61 (67.8%) preponderance was observed. Sixty-two of 90 (68.9%) were immunocompromised. A total of 104 pathogens causing MDAIs were isolated. Staphylococcus epidermidis (CoNS), and Staphylococcus capitis were commonly isolated multi-drug resistant (MDR) gram-positive pathogens causing MDAIs. Similarly, carba-resistant Klebsiella pneumoniae, Stenotrophomonas maltophilia, and carba-resistant Acinetobacter baumanni were commonly isolated MDR gram-negative pathogens causing MDAIs. Five of 9 (55.5%) K. pneumoniae and three of 9 (33.3%) S. maltophilia isolates were found to be extensively drug resistant. Among Candida, C. parapsilosis was the most prevalent fungal pathogen causing CLABSI and CAUTI in patients admitted to ICU/HDU. How to cite this article Suryawanshi VR, Pawar A, Purandare B, Vijayvargiya N, Sancheti S, Philip S, et al. Microbial Profile, Antimicrobial Susceptibility, and Prevalence of MDR/XDR Pathogens Causing Medical Device Associated Infections: A Single Center Study. Indian J Crit Care Med 2024;28(2):152-164.
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Affiliation(s)
- Vaibhav R Suryawanshi
- Department of Pharmacy Practice, Bharati Vidyapeeth (Deemed to be University), Poona College of Pharmacy, BVDU Katraj Campus, Pune, Maharashtra, India
| | - Atmaram Pawar
- Department of Pharmaceutics, Bharati Vidyapeeth (Deemed to be University), Poona College of Pharmacy, Pune, Maharashtra, India
| | - Bharat Purandare
- Department of Infectious Diseases, Bharati Vidyapeeth (Deemed to be University) Medical College, Pune, Maharashtra, India
| | - Niveda Vijayvargiya
- Department of Pharmacy Practice, Bharati Vidyapeeth (Deemed to be University), Poona College of Pharmacy, BVDU Katraj Campus, Pune, Maharashtra, India
| | - Sandesh Sancheti
- Department of Pharmacy Practice, Bharati Vidyapeeth (Deemed to be University), Poona College of Pharmacy, BVDU Katraj Campus, Pune, Maharashtra, India
| | - Susan Philip
- Department of Pharmacy Practice, Bharati Vidyapeeth (Deemed to be University), Poona College of Pharmacy, BVDU Katraj Campus, Pune, Maharashtra, India
| | - Prasad Nagare
- Department of Pharmacy Practice, Bharati Vidyapeeth (Deemed to be University), Poona College of Pharmacy, BVDU Katraj Campus, Pune, Maharashtra, India
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Prevalence of multidrug-resistant strains in device associated nosocomial infection and their in vitro killing by nanocomposites. Ann Med Surg (Lond) 2022; 78:103687. [PMID: 35734711 PMCID: PMC9207053 DOI: 10.1016/j.amsu.2022.103687] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 04/25/2022] [Indexed: 11/24/2022] Open
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Kamli MR, Malik MA, Lone SA, Sabir JSM, Mattar EH, Ahmad A. Beta vulgaris Assisted Fabrication of Novel Ag-Cu Bimetallic Nanoparticles for Growth Inhibition and Virulence in Candida albicans. Pharmaceutics 2021; 13:1957. [PMID: 34834372 PMCID: PMC8621205 DOI: 10.3390/pharmaceutics13111957] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/12/2021] [Accepted: 11/15/2021] [Indexed: 01/03/2023] Open
Abstract
Beta vulgaris extract contains water-soluble red pigment betanin and is used as a food colorant. In this study, the biogenic Ag-Cu bimetallic nanoparticles were synthesized and characterized by different spectroscopic and microscopic techniques, including UV-Visible, FTIR, TEM. SEM-EDX, XRD, and TGA. Further, Ag-Cu bimetallic nanoparticles capped with Beta vulgaris biomolecules were evaluated for their antifungal activity against Candida albicans via targeting its major virulence factors, including adherence, yeast to hyphae transition, extracellular enzyme secretion, biofilm formation, and the expression of genes related to these pathogenic traits by using standard methods. C. albicans is an opportunistic human fungal pathogen that causes significant morbidity and mortality, mainly in immunocompromised patients. The current antifungal therapy is limited with various shortcomings such as host toxicity and developing multidrug resistance. Therefore, the development of novel antifungal agents is urgently required. Furthermore, NPs were screened for cell viability and cytotoxicity effect. Antifungal susceptibility testing showed potent antifungal activity of the Ag-Cu bimetallic NPs with a significant inhibitory effect on adherence, yeast to hyphae transition, extracellular enzymes secretion, and formation of biofilms in C. albicans at sub-inhibitory and inhibitory concentrations. The RT-qPCR results at an MIC value of the NPs exhibited a varying degree of downregulation in expression levels of virulence genes. Results also revealed the dose-dependent effect of NPs on cellular viability (up to 100%) using MUSE cell analyzer. Moreover, the low cytotoxicity effect of bimetallic NPs has been observed using haemolytic assay. The overall results indicated that the newly synthesized Ag-Cu bimetallic NPs capped with Beta vulgaris are proven to possess a potent anticandidal activity, by affecting the vital pathogenic factors of C. albicans.
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Affiliation(s)
- Majid Rasool Kamli
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (J.S.M.S.); (E.H.M.)
- Center of Excellence in Bionanoscience Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Maqsood Ahmad Malik
- Chemistry Department, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Shabir Ahmad Lone
- Clinical Microbiology and Infectious Diseases, Faculty of Health Sciences, School of Pathology, University of the Witwatersrand, Johannesburg 2193, South Africa; (S.A.L.); (A.A.)
| | - Jamal S. M. Sabir
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (J.S.M.S.); (E.H.M.)
- Center of Excellence in Bionanoscience Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Ehab H. Mattar
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (J.S.M.S.); (E.H.M.)
| | - Aijaz Ahmad
- Clinical Microbiology and Infectious Diseases, Faculty of Health Sciences, School of Pathology, University of the Witwatersrand, Johannesburg 2193, South Africa; (S.A.L.); (A.A.)
- Infection Control Unit, Charlotte Maxeke Johannesburg Academic Hospital, National Health Laboratory Service, Johannesburg 2193, South Africa
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Jalal M, Ansari MA, Alzohairy MA, Ali SG, Khan HM, Almatroudi A, Siddiqui MI. Anticandidal activity of biosynthesized silver nanoparticles: effect on growth, cell morphology, and key virulence attributes of Candida species. Int J Nanomedicine 2019; 14:4667-4679. [PMID: 31308652 PMCID: PMC6612830 DOI: 10.2147/ijn.s210449] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 05/10/2019] [Indexed: 12/13/2022] Open
Abstract
Purpose: The pathogenicity in Candida spp was attributed by several virulence factors such as production of tissue damaging extracellular enzymes, germ tube formation, hyphal morphogenesis and establishment of drug resistant biofilm. The objective of present study was to investigate the effects of silver nanoparticles (AgNPs) on growth, cell morphology and key virulence attributes of Candida species. Methods: AgNPs were synthesized by the using seed extract of Syzygium cumini (Sc), and were characterized by UV-Vis spectrophotometer, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), and transmission electron microscopy (TEM). ScAgNPs were used to evaluate their antifungal and antibacterial activity as well as their potent inhibitory effects on germ tube and biofilm formation and extracellular enzymes viz. phospholipases, proteinases, lipases and hemolysin secreted by Candida spp. Results: The MICs values of ScAgNPs were ranged from 0.125-0.250 mg/ml, whereas the MBCs and MFCs were 0.250 and 0.500 mg/ml, respectively. ScAgNPs significantly inhibit the production of phospholipases by 82.2, 75.7, 78.7, 62.5, and 65.8%; proteinases by 82.0, 72.0, 77.5, 67.0, and 83.7%; lipase by 69.4, 58.8, 60.0, 42.9, and 65.0%; and hemolysin by 62.8, 69.7, 67.2, 73.1, and 70.2% in C. albicans, C. tropicalis, C. dubliniensis, C. parapsilosis and C. krusei, respectively, at 500 μg/ml. ScAgNPs inhibit germ tube formation in C. albicans up to 97.1% at 0.25 mg/ml. LIVE/DEAD staining results showed that ScAgNPs almost completely inhibit biofilm formation in C. albicans. TEM analysis shows that ScAgNPs not only anchored onto the cell surface but also penetrated and accumulated in the cytoplasm that causes severe damage to the cell wall and cytoplasmic membrane. Conclusion: To summarize, the biosynthesized ScAgNPs strongly suppressed the multiplication, germ tube and biofilm formation and most importantly secretion of hydrolytic enzymes (viz. phospholipases, proteinases, lipases and hemolysin) by Candia spp. The present research work open several avenues of further study, such as to explore the molecular mechanism of inhibition of germ tubes and biofilm formation and suppression of production of various hydrolytic enzymes by Candida spp.
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Affiliation(s)
- Mohammad Jalal
- Department of Microbiology, Jawaharlal Nehru Medical College and Hospital, Aligarh Muslim University, Aligarh202002, India
| | - Mohammad Azam Ansari
- Department of Epidemic Disease Research, Institutes for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam31441, Saudi Arabia
| | - Mohammad A Alzohairy
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Qassim51431, Saudi Arabia
| | - Syed Ghazanfar Ali
- Department of Microbiology, Jawaharlal Nehru Medical College and Hospital, Aligarh Muslim University, Aligarh202002, India
| | - Haris M Khan
- Department of Microbiology, Jawaharlal Nehru Medical College and Hospital, Aligarh Muslim University, Aligarh202002, India
| | - Ahmad Almatroudi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Qassim51431, Saudi Arabia
| | - Mohammad Imran Siddiqui
- Department of Environmental Engineering, Zakir Husain College of Engineering and Technology, Aligarh Muslim University, Aligarh202202, India
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Bie X, Zhang S, Luo X, Qi RQ. Candida albicans cell wall mannoprotein synergizes with lipopolysaccharide to affect RAW264.7 proliferation, phagocytosis and apoptosis. Microb Pathog 2019; 131:98-105. [PMID: 30953745 DOI: 10.1016/j.micpath.2019.03.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 03/27/2019] [Accepted: 03/28/2019] [Indexed: 02/07/2023]
Abstract
With the widespread use of invasive surgery, immunosuppressive therapy and broad-spectrum antibiotics, there has resulted a corresponding increase in severe systemic infections as produced by Candida albicans (C.albicans), as it combines with bacterial infections. Such infections often result in high rates of mortality. In this report, we examined the effects of the C. albicans cell wall mannoprotein (MP) on macrophage immunity. The MTS assay was used to detect cell proliferation activity and neutral red staining to observe cell phagocytosis. The Griess method was used to detect NO secretion in culture supernatants and apoptosis of macrophages were determined with use of FITC-Annexin V and PI staining. mRNA and protein expressions of JAK2, STAT3, IL-1β, IL-6, TNF-α and iNOS in RAW264.7 cells were determined with use of RT-PCR and western blot. MP significantly promoted the proliferation of RAW264.7 cells, inhibited their phagocytic capacity, but exerted no significant effects on apoptosis of macrophages. In addition, MP not only up-regulated the expression of cytokines, but also the expressions of p-stat3 and p-jak2. Interestingly, when MP was combined with lipopolysaccharide (LPS) a markedly accentuated release of inflammatory cytokines was observed. MP promotes macrophage inflammation induced by LPS and participates in the inflammatory response. One of the potential mechanisms of this effect involves MP activation of the JAK2/STAT3 signaling pathway in RAW264.7 cells, which enables macrophages to transform from M0 to M1 and promote the occurrence of inflammation.
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Affiliation(s)
- Xingxing Bie
- Thoracic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Shuguang Zhang
- Thoracic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Xue Luo
- Pathology Department, The 202 Hospital of the People's Liberation Army, China
| | - Rui-Qun Qi
- NHC/Ministry of Education/Liaoning Province Key Laboratory of Immunodermatology(China Medical University), The First Hospital of China Medical University, China.
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Muthamil S, Balasubramaniam B, Balamurugan K, Pandian SK. Synergistic Effect of Quinic Acid Derived From Syzygium cumini and Undecanoic Acid Against Candida spp. Biofilm and Virulence. Front Microbiol 2018; 9:2835. [PMID: 30534118 PMCID: PMC6275436 DOI: 10.3389/fmicb.2018.02835] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 11/05/2018] [Indexed: 12/14/2022] Open
Abstract
In recent decades, fungal infections have incredibly increased with Candida genus as the major cause of morbidity and mortality in hospitalized and immunocompromised patients. Most of the Candida species are proficient in biofilm formation on implanted medical devices as well as human tissues. Biofilm related Candida infections are very difficult to treat using common antifungal agents owing to their increased drug resistance. To address these issues, the present study investigated the antibiofilm and antivirulent properties of Syzygium cumini derived quinic acid in combination with known antifungal compound undecanoic acid. Initially, antibiofilm potential of S. cumini leaf extract was assessed and the active principles were identified through gas chromatography and mass spectrometry analysis. Among the compounds identified, quinic acid was one of the major compounds. The interaction between quinic acid and undecanoic acid was found to be synergistic in the Fractional inhibitory concentration index (≤0.5). Results of in vitro assays and gene expression analysis suggested that the synergistic combinations of quinic acid and undecanoic acid significantly inhibited virulence traits of Candida spp. such as the biofilm formation, yeast-to-hyphal transition, extracellular polymeric substances production, filamentation, secreted hydrolases production and ergosterol biosynthesis. In addition, result of in vivo studies using Caenorhabditis elegans demonstrated the non-toxic nature of QA-UDA combination and antivirulence effect against Candida spp. For the first time, synergistic antivirulence ability of quinic acid and undecanoic acid was explored against Candida spp. Thus, results obtained from the present study suggest that combination of phytochemicals might be used an alternate therapeutic strategy for the prevention and treatment of biofilm associated Candida infection.
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Cataldi V, Di Campli E, Fazii P, Traini T, Cellini L, Di Giulio M. Candida species isolated from different body sites and their antifungal susceptibility pattern: Cross-analysis of Candida albicans and Candida glabrata biofilms. Med Mycol 2018; 55:624-634. [PMID: 27915303 DOI: 10.1093/mmy/myw126] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 09/23/2016] [Indexed: 12/27/2022] Open
Abstract
Candida species are regular commensal in humans, but-especially in immunocompromised patients-they represent opportunistic pathogens giving rise to systemic infection. The aim of the present work was to isolate and characterize for their antifungal profile Candida species from different body sites and to analyze the biofilms produced by C. albicans and C. glabrata isolates. Eighty-one strains of Candida species from 77 patients were identified. Epidemiological study showed that the most isolated species were C. albicans (44), C. glabrata (13) and C. parapsilosis (13) mainly from Hematology, Infectious Diseases, Medicine, Neonatology and Oncology Divisions, the majority of the biological samples were swabs (44) and blood cultures (16). The analysis of the biofilm formation was performed at 24 and 48-hours comparing resistant and susceptible strains of C. albicans to resistant and susceptible strains of C. glabrata. Candida albicans has a greater ability to form biofilm compared to C. glabrata, both in the susceptible and resistant strains reaching maturity after 24 hours with a complex structure composed of blastospores, pseudohyphae, and hyphae embedded in a matrix. On the contrary, C. glabrata biofilm was composed exclusively of blastospores that in the resistant strain, after 24 hours, were organized in a compact multilayer different to the discontinuous structure observed in the susceptible analyzed strains. In conclusion, the increasing of the incidence of Candida species infection together with their emerging drug resistance also related to the biofilm forming capability underline the need to monitor their distribution and susceptibility patterns for improving the surveillance and for a correct management of the infection.
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Affiliation(s)
- Valentina Cataldi
- Departments of Pharmacy and Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio," Chieti-Pescara, Chieti, Italy
| | - Emanuela Di Campli
- Departments of Pharmacy and Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio," Chieti-Pescara, Chieti, Italy
| | - Paolo Fazii
- Clinical Microbiology and Virology, Spirito Santo Hospital, Pescara, Italy
| | - Tonino Traini
- Medical, Oral and Biotechnological Sciences, University "G.d'Annunzio", Chieti-Pescara, Chieti, Italy
| | - Luigina Cellini
- Departments of Pharmacy and Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio," Chieti-Pescara, Chieti, Italy
| | - Mara Di Giulio
- Departments of Pharmacy and Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio," Chieti-Pescara, Chieti, Italy
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Madhavan P, Jamal F, Pei CP, Othman F, Karunanidhi A, Ng KP. Comparative Study of the Effects of Fluconazole and Voriconazole on Candida glabrata, Candida parapsilosis and Candida rugosa Biofilms. Mycopathologia 2018; 183:499-511. [PMID: 29380188 DOI: 10.1007/s11046-018-0243-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 01/03/2018] [Indexed: 12/30/2022]
Abstract
Infections by non-albicans Candida species are a life-threatening condition, and formation of biofilms can lead to treatment failure in a clinical setting. This study was aimed to demonstrate the in vitro antibiofilm activity of fluconazole (FLU) and voriconazole (VOR) against C. glabrata, C. parapsilosis and C. rugosa with diverse antifungal susceptibilities to FLU and VOR. The antibiofilm activities of FLU and VOR in the form of suspension as well as pre-coatings were assessed by XTT [2,3-bis-(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide] reduction assay. Morphological and intracellular changes exerted by the antifungal drugs on Candida cells were examined by scanning electron microscope (SEM) and transmission electron microscope (TEM). The results of the antibiofilm activities showed that FLU drug suspension was capable of killing C. parapsilosis and C. rugosa at minimum inhibitory concentrations (MICs) of 4× MIC FLU and 256× MIC FLU, respectively. While VOR MICs ranging from 2× to 32× were capable of killing the biofilms of all Candida spp tested. The antibiofilm activities of pre-coated FLU were able to kill the biofilms at ¼× MIC FLU and ½× MIC FLU for C. parapsilosis and C. rugosa strains, respectively. While pre-coated VOR was able to kill the biofilms, all three Candida sp at ½× MIC VOR. SEM and TEM examinations showed that FLU and VOR treatments exerted significant impact on Candida cell with various degrees of morphological changes. In conclusion, a fourfold reduction in MIC50 of FLU and VOR towards ATCC strains of C. glabrata, C. rugosa and C. rugosa clinical strain was observed in this study.
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Affiliation(s)
- Priya Madhavan
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Lakeside Campus, No. 1, Jalan Taylor's, 47500, Subang Jaya, Selangor Darul Ehsan, Malaysia. .,Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor Darul Ehsan, Malaysia.
| | - Farida Jamal
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor Darul Ehsan, Malaysia
| | - Chong Pei Pei
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor Darul Ehsan, Malaysia
| | - Fauziah Othman
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor Darul Ehsan, Malaysia
| | - Arunkumar Karunanidhi
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor Darul Ehsan, Malaysia.,Department of Pharmacology and Chemistry, Faculty of Pharmacy, Universiti Teknologi MARA, 42300, Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
| | - Kee Peng Ng
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603, Lembah Pantai, Kuala Lumpur, Malaysia
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Paulone S, Ardizzoni A, Tavanti A, Piccinelli S, Rizzato C, Lupetti A, Colombari B, Pericolini E, Polonelli L, Magliani W, Conti S, Posteraro B, Cermelli C, Blasi E, Peppoloni S. The synthetic killer peptide KP impairs Candida albicans biofilm in vitro. PLoS One 2017; 12:e0181278. [PMID: 28704490 PMCID: PMC5509322 DOI: 10.1371/journal.pone.0181278] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 06/28/2017] [Indexed: 01/04/2023] Open
Abstract
Candida albicans is a commensal organism, commonly inhabiting mucosal surfaces of healthy individuals, as a part of the resident microbiota. However, in susceptible hosts, especially hospitalized and/or immunocompromised patients, it may cause a wide range of infections. The presence of abiotic substrates, such as central venous or urinary catheters, provides an additional niche for Candida attachment and persistence, particularly via biofilm development. Furthermore, Candida biofilm is poorly susceptible to most antifungals, including azoles. Here we investigated the effects of a synthetic killer peptide (KP), known to be active in vitro, ex vivo and/or in vivo against different pathogens, on C. albicans biofilm. Together with a scrambled peptide used as a negative control, KP was tested against Candida biofilm at different stages of development. A reference strain, two fluconazole-resistant and two fluconazole-susceptible C. albicans clinical isolates were used. KP-induced C. albicans oxidative stress response and membrane permeability were also analysed. Moreover, the effect of KP on transcriptional profiles of C. albicans genes involved in different stages of biofilm development, such as cell adhesion, hyphal development and extracellular matrix production, was evaluated. Our results clearly show that the treatment with KP strongly affected the capacity of C. albicans to form biofilm and significantly impairs preformed mature biofilm. KP treatment resulted in an increase in C. albicans oxidative stress response and membrane permeability; also, biofilm-related genes expression was significantly reduced. Comparable inhibitory effects were observed in all the strains employed, irrespective of their resistance or susceptibility to fluconazole. Finally, KP-mediated inhibitory effects were observed also against a catheter-associated C. albicans biofilm. This study provides the first evidence on the KP effectiveness against C. albicans biofilm, suggesting that KP may be considered as a potential novel tool for treatment and prevention of biofilm-related C. albicans infections.
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Affiliation(s)
- Simona Paulone
- Department of Diagnostics, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Modena, Italy
| | - Andrea Ardizzoni
- Department of Diagnostics, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Modena, Italy
| | | | - Serena Piccinelli
- Department of Diagnostics, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Modena, Italy
| | - Cosmeri Rizzato
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Antonella Lupetti
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Bruna Colombari
- Department of Diagnostics, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Modena, Italy
| | - Eva Pericolini
- Department of Diagnostics, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Modena, Italy
| | - Luciano Polonelli
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Walter Magliani
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Stefania Conti
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Brunella Posteraro
- Institute of Public Health, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli, Rome, Italy
| | - Claudio Cermelli
- Department of Diagnostics, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Modena, Italy
| | - Elisabetta Blasi
- Department of Diagnostics, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Modena, Italy
- * E-mail:
| | - Samuele Peppoloni
- Department of Diagnostics, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Modena, Italy
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Hirota K, Yumoto H, Sapaar B, Matsuo T, Ichikawa T, Miyake Y. Pathogenic factors in Candida biofilm-related infectious diseases. J Appl Microbiol 2016; 122:321-330. [PMID: 27770500 DOI: 10.1111/jam.13330] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 10/11/2016] [Accepted: 10/15/2016] [Indexed: 01/07/2023]
Abstract
Candida albicans is a commonly found member of the human microflora and is a major human opportunistic fungal pathogen. A perturbation of the microbiome can lead to infectious diseases caused by various micro-organisms, including C. albicans. Moreover, the interactions between C. albicans and bacteria are considered to play critical roles in human health. The major biological feature of C. albicans, which impacts human health, resides in its ability to form biofilms. In particular, the extracellular matrix (ECM) of Candida biofilm plays a multifaceted role and therefore may be considered as a highly attractive target to combat biofilm-related infectious diseases. In addition, extracellular DNA (eDNA) also plays a crucial role in Candida biofilm formation and its structural integrity and induces the morphological transition from yeast to the hyphal growth form during C. albicans biofilm development. This review focuses on pathogenic factors such as eDNA in Candida biofilm formation and its ECM production and provides meaningful information for future studies to develop a novel strategy to battle infectious diseases elicited by Candida-formed biofilm.
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Affiliation(s)
- K Hirota
- Department of Oral Microbiology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - H Yumoto
- Department of Conservative Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - B Sapaar
- Department of Oral and Maxillofacial Prosthodontics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - T Matsuo
- Department of Conservative Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - T Ichikawa
- Department of Oral and Maxillofacial Prosthodontics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Y Miyake
- Department of Oral Microbiology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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11
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Gupta P, Chanda R, Rai N, Kataria VK, Kumar N. Antihypertensive, Amlodipine Besilate Inhibits Growth and Biofilm of Human Fungal Pathogen Candida. Assay Drug Dev Technol 2016; 14:291-297. [DOI: 10.1089/adt.2016.714] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Payal Gupta
- Department of Biotechnology, Graphic Era University, Dehradun, India
| | - Reshmi Chanda
- Department of Microbiology, Shri Guru Ram Rai Institute of Medical and Health Sciences, Dehradun, India
| | - Nishant Rai
- Department of Biotechnology, Graphic Era University, Dehradun, India
| | - Vijay K. Kataria
- Department of Microbiology, Shri Guru Ram Rai Institute of Medical and Health Sciences, Dehradun, India
| | - Navin Kumar
- Department of Biotechnology, Graphic Era University, Dehradun, India
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