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Ostap-Chec M, Bajorek D, Antoł W, Stec D, Miler K. Occasional and constant exposure to dietary ethanol shortens the lifespan of worker honey bees. J Comp Physiol B 2024; 194:403-410. [PMID: 38880794 DOI: 10.1007/s00360-024-01571-3] [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: 04/02/2024] [Accepted: 06/05/2024] [Indexed: 06/18/2024]
Abstract
Honey bees (Apis mellifera) are one of the most crucial pollinators, providing vital ecosystem services. Their development and functioning depend on essential nutrients and substances found in the environment. While collecting nectar as a vital carbohydrate source, bees routinely encounter low doses of ethanol from yeast fermentation. Yet, the effects of repeated ethanol exposure on bees' survival and physiology remain poorly understood. Here, we investigate the impacts of constant and occasional consumption of food spiked with 1% ethanol on honey bee mortality and alcohol dehydrogenase (ADH) activity. This ethanol concentration might be tentatively judged close to that in natural conditions. We conducted an experiment in which bees were exposed to three types of long-term diets: constant sugar solution (control group that simulated conditions of no access to ethanol), sugar solution spiked with ethanol every third day (that simulated occasional, infrequent exposure to ethanol) and daily ethanol consumption (simulating constant, routine exposure to ethanol). The results revealed that both constant and occasional ethanol consumption increased the mortality of bees, but only after several days. These mortality rates rose with the frequency of ethanol intake. The ADH activity remained similar in bees from all groups. Our findings indicate that exposure of bees to ethanol carries harmful effects that accumulate over time. Further research is needed to pinpoint the exact ethanol doses ingested with food and exposure frequency in bees in natural conditions.
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Affiliation(s)
- Monika Ostap-Chec
- Doctoral School of Exact and Natural Sciences, Jagiellonian University, Prof. St. Łojasiewicza 11 St., 30-348, Kraków, Poland.
- Institute of Environmental Sciences, Faculty of Biology, Jagiellonian University, Gronostajowa 7 St., 30-387 , Kraków, Poland.
| | - Daniel Bajorek
- Institute of Systematics and Evolution of Animals of the Polish Academy of Sciences, Sławkowska 17 St., 31-016, Kraków, Poland
| | - Weronika Antoł
- Institute of Systematics and Evolution of Animals of the Polish Academy of Sciences, Sławkowska 17 St., 31-016, Kraków, Poland
| | - Daniel Stec
- Institute of Systematics and Evolution of Animals of the Polish Academy of Sciences, Sławkowska 17 St., 31-016, Kraków, Poland
| | - Krzysztof Miler
- Institute of Systematics and Evolution of Animals of the Polish Academy of Sciences, Sławkowska 17 St., 31-016, Kraków, Poland.
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Ayad AS, Benchaabane S, Daas T, Smagghe G, Loucif-Ayad W. Assessment of Efficacy of Algerian Propolis against the Parasitic Mite Varroa destructor and Safety for Honey Bees by Spray Treatment. INSECTS 2024; 15:75. [PMID: 38276824 PMCID: PMC10816108 DOI: 10.3390/insects15010075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/11/2024] [Accepted: 01/19/2024] [Indexed: 01/27/2024]
Abstract
Varroa destructor is an ectoparasitic mite and is considered one of the most important causes of honey bee population loss. In the last years, substances of botanical origin have emerged as natural alternatives to diminish the mite population levels. Propolis is a natural product and is used by honey bees for multiple tasks, including protection from pathogens and parasites, and varroacidal activity of propolis extracts has been shown. In this study, we investigated the potential of propolis, collected by native Algerian honey bee subspecies (Apis mellifera intermissa and A. m. sahariensis) in different locations in Algeria and extracted by ultrasound, to control mites of V. destructor and tested the safety for the honey bees. The most important results were that the best propolis extracts at 10% killed 100% of the Varroa mites within 3-4 h in a Petri dish assay. In addition, when we sprayed A. m. intermissa bees infested with Varroa mites with a 10% concentration in a mini-hive setup, we scored a high mite mortality of 85-87% with the best propolis extracts, and importantly, there was no mortality in the bees. Our data demonstrated that propolis extracts in Algeria could be used in honey bee colonies by spraying against Varroa mite infestations, which may develop as an easy method for local beekeepers to control Varroa in their hives. Further research should investigate the mechanism of action.
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Affiliation(s)
- Ahmed Sabri Ayad
- Laboratory of Applied Animal Biology, Faculty of Sciences, Badji Mokhtar University, Annaba 23000, Algeria; (A.S.A.); (T.D.)
| | - Samia Benchaabane
- Laboratory of Applied Animal Biology, Faculty of Sciences, Badji Mokhtar University, Annaba 23000, Algeria; (A.S.A.); (T.D.)
| | - Tarek Daas
- Laboratory of Applied Animal Biology, Faculty of Sciences, Badji Mokhtar University, Annaba 23000, Algeria; (A.S.A.); (T.D.)
| | - Guy Smagghe
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium
- Institute of Entomology, Guizhou University, Guiyang 550025, China
- Department of Biology, Vrije Universiteit Brussel (VUB), 1050 Brussels, Belgium
| | - Wahida Loucif-Ayad
- Laboratory of Applied Animal Biology, Faculty of Sciences, Badji Mokhtar University, Annaba 23000, Algeria; (A.S.A.); (T.D.)
- Faculty of Medicine, Badji Mokhtar University, Annaba 23000, Algeria
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3
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Mair KS, Irrgeher J, Haluza D. Elucidating the Role of Honey Bees as Biomonitors in Environmental Health Research. INSECTS 2023; 14:874. [PMID: 37999073 PMCID: PMC10671894 DOI: 10.3390/insects14110874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/07/2023] [Accepted: 11/10/2023] [Indexed: 11/25/2023]
Abstract
Recently, the One Health concept, which recognizes the interconnectedness of environmental, animal, and human health, has gained popularity. To collect data on environmental pollutants potentially harmful to human health over time, researchers often turn to natural organisms known as biomonitors. Honey bees, in particular, prove to be exceptionally valuable biomonitors due to their capacity to accumulate pollutants from the air, soil, and water within a specific radius during their foraging trips. This systematic literature review summarizes the previous application of the bee species Apis mellifera in pollutant monitoring in articles published during the period of 2010-2020. Nineteen studies were included in this systematic literature review. Of these studies, the majority (n = 15) focused on the detection of heavy metals in honey bees and beehive products, while 4 studies focused on air pollution by polycyclic aromatic hydrocarbons or particulate matter. The matrix most often applied was the whole honey bee. The included studies demonstrated that honey bees and hive products deliver quantitative and qualitative information about specific pollutants. In this regard, the whole honey bee was found to be the most reliable biomonitor. We found that the included studies differed in design and the methods used. Standardized studies could foster a more consistent interpretation of the levels detected in beehive matrices from an environmental health perspective.
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Affiliation(s)
- Katharina Sophia Mair
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric Pulmonology, Allergology and Endocrinology, Medical University of Vienna, 1090 Vienna, Austria
- Center for Public Health, Department of Environmental Health, Medical University of Vienna, 1090 Vienna, Austria
| | - Johanna Irrgeher
- Department of General, Analytical and Physical Chemistry, Chair of General and Analytical Chemistry, Montanuniversität Leoben, 8700 Leoben, Austria
| | - Daniela Haluza
- Center for Public Health, Department of Environmental Health, Medical University of Vienna, 1090 Vienna, Austria
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Astija A, Wardani E, Febriani VI, Dhafir F. Effect of Jackfruit Leaf Extract ( Artocarpus heterophyllus) on Sitophilus oryzae Mortality and Rice Quality. SCIENTIFICA 2023; 2023:1579432. [PMID: 37876982 PMCID: PMC10593549 DOI: 10.1155/2023/1579432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/28/2023] [Accepted: 09/20/2023] [Indexed: 10/26/2023]
Abstract
Sitophilus oryzae is an insect pest known for its destructive impact on rice crops. Chemical pesticides continue to be employed for the prevention of Sitophilus oryzae. The aforementioned phenomenon exerts adverse effects, notably in the form of human intoxication. Hence, one alternate approach to address the issue involves utilizing a preparation derived from the leaves of the jackfruit tree. The leaves of the jackfruit tree are known to possess many bioactive compounds such as flavonoids, saponins, and tannins, which have insecticidal properties. Hence, the objectives of this study are to investigate the impact of jackfruit leaf extract on the mortality rate of rice insects and to evaluate the quality of rice. The study was carried out in the Biology Laboratory of the Faculty of Education and Teacher Training at the Tadulako University. The study employed a research strategy known as a completely randomized design (CRD), which included five treatments. Each treatment was repeated in four biological and ten technical replicates. The treatments were as follows: treatment A served as the control and involved the use of Bestrin forte, treatment B involved the application of a 10% jackfruit leaf extract, treatment C involved the application of a 20% jackfruit leaf extract, treatment D involved the application of a 30% jackfruit leaf extract, and treatment E involved the application of a 40% jackfruit leaf extract. Every treatment was administered through spraying to all ten insects and that was repeated four times. The data collected were subjected to analysis using analysis of variance (ANOVA) and supported by the SPSS-25 software. The findings of the study indicated that the application of jackfruit leaf extract (Artocarpus heterophyllus) at specific time intervals (20th, 40th, and 60th minutes) resulted in a noteworthy impact on the death rate of rice beetles. Furthermore, the extracts successfully preserved the olfactory attributes of the rice, ensuring its quality. Nevertheless, their ability to uphold the standard of the rice in relation to its color and flavor was inadequate. The efficacy of the jackfruit leaf extract in eradicating rice bugs was found to be highest when applied at a concentration of 40%.
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Affiliation(s)
- Astija Astija
- Biology Education Study Program, Faculty of Teacher Training and Education, Tadulako University, Jl. Soekarno Hatta Km. 9, Palu, Central Sulawesi 94119, Indonesia
| | - Evi Wardani
- Biology Education Study Program, Faculty of Teacher Training and Education, Tadulako University, Jl. Soekarno Hatta Km. 9, Palu, Central Sulawesi 94119, Indonesia
| | - Vita Indri Febriani
- Biology Education Study Program, Faculty of Teacher Training and Education, Tadulako University, Jl. Soekarno Hatta Km. 9, Palu, Central Sulawesi 94119, Indonesia
| | - Fatma Dhafir
- Biology Education Study Program, Faculty of Teacher Training and Education, Tadulako University, Jl. Soekarno Hatta Km. 9, Palu, Central Sulawesi 94119, Indonesia
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Zanni V, Frizzera D, Marroni F, Seffin E, Annoscia D, Nazzi F. Age-related response to mite parasitization and viral infection in the honey bee suggests a trade-off between growth and immunity. PLoS One 2023; 18:e0288821. [PMID: 37459342 PMCID: PMC10351714 DOI: 10.1371/journal.pone.0288821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 07/04/2023] [Indexed: 07/20/2023] Open
Abstract
Host age at parasites' exposure is often neglected in studies on host-parasite interactions despite the important implications for epidemiology. Here we compared the impact of the parasitic mite Varroa destructor, and the associated pathogenic virus DWV on different life stages of their host, the western honey bee Apis mellifera. The pre-imaginal stages of the honey bee proved to be more susceptible to mite parasitization and viral infection than adults. The higher viral load in mite-infested bees and DWV genotype do not appear to be the drivers of the observed difference which, instead, seems to be related to the immune-competence of the host. These results support the existence of a trade-off between immunity and growth, making the pupa, which is involved in the highly energy-demanding process of metamorphosis, more susceptible to parasites and pathogens. This may have important implications for the evolution of the parasite's virulence and in turn for honey bee health. Our results highlight the important role of host's age and life stage at exposure in epidemiological modelling. Furthermore, our study could unravel new aspects of the complex honey bee-Varroa relationship to be addressed for a sustainable management of this parasite.
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Affiliation(s)
- Virginia Zanni
- Dipartimento di Scienze AgroAlimentari, Ambientali e Animali (DI4A), Università degli Studi di Udine, Udine, Italy
| | - Davide Frizzera
- Dipartimento di Scienze AgroAlimentari, Ambientali e Animali (DI4A), Università degli Studi di Udine, Udine, Italy
| | - Fabio Marroni
- Dipartimento di Scienze AgroAlimentari, Ambientali e Animali (DI4A), Università degli Studi di Udine, Udine, Italy
| | - Elisa Seffin
- Dipartimento di Scienze AgroAlimentari, Ambientali e Animali (DI4A), Università degli Studi di Udine, Udine, Italy
| | - Desiderato Annoscia
- Dipartimento di Scienze AgroAlimentari, Ambientali e Animali (DI4A), Università degli Studi di Udine, Udine, Italy
| | - Francesco Nazzi
- Dipartimento di Scienze AgroAlimentari, Ambientali e Animali (DI4A), Università degli Studi di Udine, Udine, Italy
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The Activity of Red Nigerian Propolis and Some of Its Components against Trypanosoma brucei and Trypanosoma congolense. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020622. [PMID: 36677679 PMCID: PMC9860874 DOI: 10.3390/molecules28020622] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/01/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023]
Abstract
Propolis is a resin that is gathered by bees from exudates produced by various plants. Its exact chemical composition depends on the plants available near the hive. Bees use propolis to coat the surfaces of the hive, where it acts as an anti-infective. Regardless of the chemical composition of propolis, it is always anti-protozoal, probably because protozoan parasites, particularly Lotmarium passim, are widespread in bee populations. The protozoa Trypanosoma brucei and T. congolense cause disease in humans and/or animals. The existing drugs for treating these diseases are old and resistance is an increasingly severe problem. The many types of propolis present a rich source of anti-trypanosomal compounds-from a material gathered by bees in an environmentally friendly way. In the current work, red Nigerian propolis from Rivers State, Nigeria was tested against T. brucei and T. congolense and found to be highly active (EC50 1.66 and 4.00 µg/mL, respectively). Four isoflavonoids, vestitol, neovestitol, 7-methylvestitol and medicarpin, were isolated from the propolis. The isolated compounds were also tested against T. brucei and T. congolense, and vestitol displayed the highest activity at 3.86 and 4.36 µg/mL, respectively. Activities against drug-resistant forms of T. brucei and T. congolense were similar to those against wild type.
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Wojtacka J. Propolis Contra Pharmacological Interventions in Bees. Molecules 2022; 27:molecules27154914. [PMID: 35956862 PMCID: PMC9370548 DOI: 10.3390/molecules27154914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/29/2022] [Accepted: 07/30/2022] [Indexed: 11/16/2022] Open
Abstract
In addition to wax, propolis is a mixture of resins, terpenes, and etheric and aromatic oils. This composition supports its very strong biochemical activity that affects bee health. Bee colonies are externally exposed to the activity of other different pharmacologically active substances and toxic agents used in beekeeping procedures, veterinary interventions, and the environment. Even if free form common diseases, they may suffer from parasites or toxins. In any such case the abundance and variety of honeyflow, besides proper therapy, is crucial for the maintenance of bee health. Propolis itself cannot be considered as food but can be considered as micro-nutrients for bees. This is due to the fact that some of its compounds may penetrate different bee products, and this way be consumed by bees and their larvae, while stored in the hive. This perspective shows propolis as natural agent reducing the toxicity of pyrethroid acaricides, stimulating production of detoxification enzymes, enhancing the action of antibiotics, and increasing expression of genes that encode proteins responsible for detoxication. The aim of this review is to summarize current data on the possible impact on veterinary public health of the introduction into propolis of residues of pharmacological agents approved in the EU for use in the treatment of bee colonies and their environment.
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Affiliation(s)
- Joanna Wojtacka
- Department of Veterinary Public Health, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-718 Olsztyn, Poland
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Frizzera D, Ray AM, Seffin E, Zanni V, Annoscia D, Grozinger CM, Nazzi F. The Beneficial Effect of Pollen on Varroa Infested Bees Depends on Its Influence on Behavioral Maturation Genes. FRONTIERS IN INSECT SCIENCE 2022; 2:864238. [PMID: 38468781 PMCID: PMC10926424 DOI: 10.3389/finsc.2022.864238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 04/04/2022] [Indexed: 03/13/2024]
Abstract
Honey bees collect nectar and pollen to fulfill their nutritional demands. In particular, pollen can influence longevity, the development of hypopharyngeal glands, and immune-competence of bees. Pollen can also mitigate the deleterious effects caused by the parasitic mite Varroa destructor and related deformed wing virus (DWV) infections. It has been shown that V. destructor accelerates the physiological and behavioral maturation of honey bees by influencing the interaction between two core physiological factors, Vitellogenin and juvenile hormone. In this study, we test the hypothesis that the beneficial effects of pollen on Varroa-infested bees are related to the hormonal control underpinning behavioral maturation. By analyzing the expression of genes associated to behavioral maturation in pollen-fed mite-infested bees, we show that treatment with pollen increases the lifespan of mite-infested bees by reversing the faster maturation induced by the parasite at the gene expression level. As expected, from the different immune-competence of nurse and forager bees, the lifespan extension triggered by pollen is also correlated with a positive influence of antimicrobial peptide gene expression and DWV load, further reinforcing the beneficial effect of pollen. This study lay the groundwork for future analyses of the underlying evolutionary processes and applications to improve bee health.
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Affiliation(s)
- Davide Frizzera
- Department of Agricultural, Food, Environmental and Animal Sciences (DI4A), University of Udine, Udine, Italy
| | - Allyson M. Ray
- Molecular, Cellular, and Integrative Biosciences Graduate Program, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Elisa Seffin
- Department of Agricultural, Food, Environmental and Animal Sciences (DI4A), University of Udine, Udine, Italy
| | - Virginia Zanni
- Department of Agricultural, Food, Environmental and Animal Sciences (DI4A), University of Udine, Udine, Italy
| | - Desiderato Annoscia
- Department of Agricultural, Food, Environmental and Animal Sciences (DI4A), University of Udine, Udine, Italy
| | - Christina M. Grozinger
- Molecular, Cellular, and Integrative Biosciences Graduate Program, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, United States
| | - Francesco Nazzi
- Department of Agricultural, Food, Environmental and Animal Sciences (DI4A), University of Udine, Udine, Italy
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Alenezi SS, Alenezi ND, Ebiloma GU, Natto MJ, Ungogo MA, Igoli JO, Ferro VA, Gray AI, Fearnley J, de Koning HP, Watson DG. The Antiprotozoal Activity of Papua New Guinea Propolis and Its Triterpenes. Molecules 2022; 27:1622. [PMID: 35268726 PMCID: PMC8911803 DOI: 10.3390/molecules27051622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 02/21/2022] [Accepted: 02/22/2022] [Indexed: 11/17/2022] Open
Abstract
Profiling a propolis sample from Papua New Guinea (PNG) using high-resolution mass spectrometry indicated that it contained several triterpenoids. Further fractionation by column chromatography and medium-pressure liquid chromatography (MPLC) followed by nuclear magnetic resonance spectroscopy (NMR) identified 12 triterpenoids. Five of these were obtained pure and the others as mixtures of two or three compounds. The compounds identified were: mangiferonic acid, ambonic acid, isomangiferolic acid, ambolic acid, 27-hydroxyisomangiferolic acid, cycloartenol, cycloeucalenol, 24-methylenecycloartenol, 20-hydroxybetulin, betulin, betulinic acid and madecassic acid. The fractions from the propolis and the purified compounds were tested in vitro against Crithidia fasciculata, Trypanosoma congolense, drug-resistant Trypanosoma congolense, Trypanosoma b. brucei and multidrug-resistant Trypanosoma b. brucei (B48). They were also assayed for their toxicity against U947 cells. The compounds and fractions displayed moderate to high activity against parasitic protozoa but only low cytotoxicity against the mammalian cells. The most active isolated compound, 20-hydroxybetulin, was found to be trypanostatic when different concentrations were tested against T. b. brucei growth.
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Affiliation(s)
- Samya S. Alenezi
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK; (S.S.A.); (N.D.A.); (V.A.F.); (A.I.G.)
| | - Naif D. Alenezi
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK; (S.S.A.); (N.D.A.); (V.A.F.); (A.I.G.)
| | - Godwin U. Ebiloma
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TA, UK; (G.U.E.); (M.J.N.); (M.A.U.); (J.O.I.)
- School of Health and Life Sciences, Teesside University, Middlesbrough TS1 3BX, UK
| | - Manal J. Natto
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TA, UK; (G.U.E.); (M.J.N.); (M.A.U.); (J.O.I.)
| | - Marzuq A. Ungogo
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TA, UK; (G.U.E.); (M.J.N.); (M.A.U.); (J.O.I.)
| | - John O. Igoli
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TA, UK; (G.U.E.); (M.J.N.); (M.A.U.); (J.O.I.)
- Phytochemistry Research Group, Department of Chemistry, University of Agriculture, Makurdi PMB 2373, Nigeria
| | - Valerie A. Ferro
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK; (S.S.A.); (N.D.A.); (V.A.F.); (A.I.G.)
| | - Alexander I. Gray
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK; (S.S.A.); (N.D.A.); (V.A.F.); (A.I.G.)
| | | | - Harry P. de Koning
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TA, UK; (G.U.E.); (M.J.N.); (M.A.U.); (J.O.I.)
| | - David G. Watson
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK; (S.S.A.); (N.D.A.); (V.A.F.); (A.I.G.)
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