Abduljalil, Hafsa and Alshanta, Om Alkhir and Chougule, Safa and Butcher, Mark and Short, Bryn and Mclean, William and Parry, Neil and O'Keeffe, Joanne and Ramage, Gordon (2025) Lactams exhibit potent antifungal activity against monospecies and multispecies interkingdom biofilms on a novel hydrogel skin model. APMIS: Journal of Pathology, Microbiology and Immunology, 133 (1): e13510. ISSN 0903-4641

Abstract

Infections of intact and damaged skin barriers and keratin are frequently associated with complex biofilm communities containing bacteria and fungi, yet there are limited options for successful management. This study intended to focus on the utility of some novel proprietary lactam molecules, quorum sensing (QS)–derived halogenated furanones, which act to block the QS pathway, against key fungal pathogens of the skin (Candida albicans, Malassezia furfur and Microsporum gypseum). Moreover, we aimed to assess how these actives performed against complex interkingdom biofilms in a clinically relevant model. Two lactam derivatives were tested against a panel of important fungal pathogens and then quantitatively assessed against simple and increasingly complex interkingdom biofilm models on polystyrene coverslips and a novel keratin hydrogel system. The lactams were shown to be effective against a wide range of fungal species in the planktonic and biofilm forms, with no ability to regrow. The fungal component of the multispecies biofilm models was significantly reduced with lactam treatment. Lactam treatment was also comparably effective compared to the non-prescription topical antifungal ‘Lamisil’ against C. albicans early and late biofilms. This study highlights the effectiveness of lactams as a novel antimicrobial for the management of the polymicrobial and interkingdom multispecies biofilms.

People
Abduljalil, Hafsa
Author

Abduljalil, Hafsa and Alshanta, Om Alkhir and Chougule, Safa and Butcher, Mark and Short, Bryn and Mclean, William and Parry, Neil and O'Keeffe, Joanne and Ramage, Gordon (2025) Lactams exhibit potent antifungal activity against monospecies and multispecies interkingdom biofilms on a novel hydrogel skin model. APMIS: Journal of Pathology, Microbiology and Immunology, 133 (1): e13510. ISSN 0903-4641

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Alshanta, Om Alkhir
Author

Abduljalil, Hafsa and Alshanta, Om Alkhir and Chougule, Safa and Butcher, Mark and Short, Bryn and Mclean, William and Parry, Neil and O'Keeffe, Joanne and Ramage, Gordon (2025) Lactams exhibit potent antifungal activity against monospecies and multispecies interkingdom biofilms on a novel hydrogel skin model. APMIS: Journal of Pathology, Microbiology and Immunology, 133 (1): e13510. ISSN 0903-4641

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Chougule, Safa
Author

Abduljalil, Hafsa and Alshanta, Om Alkhir and Chougule, Safa and Butcher, Mark and Short, Bryn and Mclean, William and Parry, Neil and O'Keeffe, Joanne and Ramage, Gordon (2025) Lactams exhibit potent antifungal activity against monospecies and multispecies interkingdom biofilms on a novel hydrogel skin model. APMIS: Journal of Pathology, Microbiology and Immunology, 133 (1): e13510. ISSN 0903-4641

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Butcher, Mark
Author

Abduljalil, Hafsa and Alshanta, Om Alkhir and Chougule, Safa and Butcher, Mark and Short, Bryn and Mclean, William and Parry, Neil and O'Keeffe, Joanne and Ramage, Gordon (2025) Lactams exhibit potent antifungal activity against monospecies and multispecies interkingdom biofilms on a novel hydrogel skin model. APMIS: Journal of Pathology, Microbiology and Immunology, 133 (1): e13510. ISSN 0903-4641

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Short, Bryn
Author

Allkja, Jontana and Bakri, Ahmed and Short, Bryn and Gilmour, Andrew and Brown, Jason L. and Bal, Abhijit M. and Newby, Kelly J.M. and Jenkins, Toby and Short, Rob D. and Williams, Craig and Ramage, Gordon (2025) Investigating the prevalence of fungi in diabetic ulcers: an under-recognised contributor to polymicrobial biofilms. APMIS: Journal of Pathology, Microbiology and Immunology, 133 (4): e70025. ISSN 0903-4641

Abduljalil, Hafsa and Alshanta, Om Alkhir and Chougule, Safa and Butcher, Mark and Short, Bryn and Mclean, William and Parry, Neil and O'Keeffe, Joanne and Ramage, Gordon (2025) Lactams exhibit potent antifungal activity against monospecies and multispecies interkingdom biofilms on a novel hydrogel skin model. APMIS: Journal of Pathology, Microbiology and Immunology, 133 (1): e13510. ISSN 0903-4641

Jatkowska, Aleksandra and Gkikas, Konstantinos and Nichols, Ben and Short, Bryn and Rizou, Vasiliki-Konstantina and Kapranos, Panagiotis and Klein Gunnewiek, Jennier and Christina, Edelyn and Svolos, Vaios and Quince, Christopher and Gerasimidis, Konstantinos (2024) Dose-dependent effects of enteral nutrition on the faecal microbiota and short chain fatty acids. Clinical Nutrition, 43 (5). pp. 1200-1207. ISSN 0261-5614

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Mclean, William
Author

Morgan, Alyn and Youngson, Callum and Mclean, William (2025) Medico-legal considerations in endodontics. British Dental Journal, 238 (7). pp. 573-579. ISSN 0007-0610

Abduljalil, Hafsa and Alshanta, Om Alkhir and Chougule, Safa and Butcher, Mark and Short, Bryn and Mclean, William and Parry, Neil and O'Keeffe, Joanne and Ramage, Gordon (2025) Lactams exhibit potent antifungal activity against monospecies and multispecies interkingdom biofilms on a novel hydrogel skin model. APMIS: Journal of Pathology, Microbiology and Immunology, 133 (1): e13510. ISSN 0903-4641

Mclean, William and Qualtrough, Alison J.E. (2025) Teaching of magnification in the undergraduate curriculum: a position statement from the British Endodontic Society Teachers of Endodontology Group. International Endodontic Journal, 58 (1). pp. 2-5. ISSN 0143-2885

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Parry, Neil
Author

Abduljalil, Hafsa and Alshanta, Om Alkhir and Chougule, Safa and Butcher, Mark and Short, Bryn and Mclean, William and Parry, Neil and O'Keeffe, Joanne and Ramage, Gordon (2025) Lactams exhibit potent antifungal activity against monospecies and multispecies interkingdom biofilms on a novel hydrogel skin model. APMIS: Journal of Pathology, Microbiology and Immunology, 133 (1): e13510. ISSN 0903-4641

See full publications list
O'Keeffe, Joanne
Author

Abduljalil, Hafsa and Alshanta, Om Alkhir and Chougule, Safa and Butcher, Mark and Short, Bryn and Mclean, William and Parry, Neil and O'Keeffe, Joanne and Ramage, Gordon (2025) Lactams exhibit potent antifungal activity against monospecies and multispecies interkingdom biofilms on a novel hydrogel skin model. APMIS: Journal of Pathology, Microbiology and Immunology, 133 (1): e13510. ISSN 0903-4641

See full publications list
Ramage, Gordon
Author

Allkja, Jontana and Bakri, Ahmed and Short, Bryn and Gilmour, Andrew and Brown, Jason L. and Bal, Abhijit M. and Newby, Kelly J.M. and Jenkins, Toby and Short, Rob D. and Williams, Craig and Ramage, Gordon (2025) Investigating the prevalence of fungi in diabetic ulcers: an under-recognised contributor to polymicrobial biofilms. APMIS: Journal of Pathology, Microbiology and Immunology, 133 (4): e70025. ISSN 0903-4641

Ware, Alicia and Johnston, William and Delaney, Christopher and Butcher, Mark C. and Ramage, Gordon and Price, Lesley and Butcher, John and Kean, Ryan (2025) Dry surface biofilm formation by Candida auris facilitates persistence and tolerance to sodium hypochlorite. APMIS: Journal of Pathology, Microbiology and Immunology, 133 (4): e70022. ISSN 0903-4641

Abduljalil, Hafsa and Alshanta, Om Alkhir and Chougule, Safa and Butcher, Mark and Short, Bryn and Mclean, William and Parry, Neil and O'Keeffe, Joanne and Ramage, Gordon (2025) Lactams exhibit potent antifungal activity against monospecies and multispecies interkingdom biofilms on a novel hydrogel skin model. APMIS: Journal of Pathology, Microbiology and Immunology, 133 (1): e13510. ISSN 0903-4641

See full publications list
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