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Linde KJ, Wouters IM, Kluytmans JAJW, Kluytmans-van den Bergh MFQ, Pas SD, GeurtsvanKessel CH, Koopmans MPG, Meier M, Meijer P, Raben CR, Spithoven J, Tersteeg-Zijderveld MHG, Heederik DJJ, Dohmen W. Detection of SARS-CoV-2 in Air and on Surfaces in Rooms of Infected Nursing Home Residents. Ann Work Expo Health 2022; 67:129-140. [PMID: 36068657 PMCID: PMC9834894 DOI: 10.1093/annweh/wxac056] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 07/12/2022] [Accepted: 07/29/2022] [Indexed: 01/14/2023] Open
Abstract
There is an ongoing debate on airborne transmission of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) as a risk factor for infection. In this study, the level of SARS-CoV-2 in air and on surfaces of SARS-CoV-2 infected nursing home residents was assessed to gain insight in potential transmission routes. During outbreaks, air samples were collected using three different active and one passive air sampling technique in rooms of infected patients. Oropharyngeal swabs (OPS) of the residents and dry surface swabs were collected. Additionally, longitudinal passive air samples were collected during a period of 4 months in common areas of the wards. Presence of SARS-CoV-2 RNA was determined using RT-qPCR, targeting the RdRp- and E-genes. OPS, samples of two active air samplers and surface swabs with Ct-value ≤35 were tested for the presence of infectious virus by cell culture. In total, 360 air and 319 surface samples from patient rooms and common areas were collected. In rooms of 10 residents with detected SARS-CoV-2 RNA in OPS, SARS-CoV-2 RNA was detected in 93 of 184 collected environmental samples (50.5%) (lowest Ct 29.5), substantially more than in the rooms of residents with negative OPS on the day of environmental sampling (n = 2) (3.6%). SARS-CoV-2 RNA was most frequently present in the larger particle size fractions [>4 μm 60% (6/10); 1-4 μm 50% (5/10); <1 μm 20% (2/10)] (Fischer exact test P = 0.076). The highest proportion of RNA-positive air samples on room level was found with a filtration-based sampler 80% (8/10) and the cyclone-based sampler 70% (7/10), and impingement-based sampler 50% (5/10). SARS-CoV-2 RNA was detected in 10 out of 12 (83%) passive air samples in patient rooms. Both high-touch and low-touch surfaces contained SARS-CoV-2 genome in rooms of residents with positive OPS [high 38% (21/55); low 50% (22/44)]. In one active air sample, infectious virus in vitro was detected. In conclusion, SARS-CoV-2 is frequently detected in air and on surfaces in the immediate surroundings of room-isolated COVID-19 patients, providing evidence of environmental contamination. The environmental contamination of SARS-CoV-2 and infectious aerosols confirm the potential for transmission via air up to several meters.
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Affiliation(s)
- Kimberly J Linde
- Author to whom correspondence should be addressed. Tel: +31302535358; e-mail:
| | - Inge M Wouters
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Jan A J W Kluytmans
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Marjolein F Q Kluytmans-van den Bergh
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands,Department of Infection Control, Amphia Hospital, Breda, The Netherlands
| | - Suzan D Pas
- Microvida Location Amphia/Bravis, Breda/Roosendaal, The Netherlands
| | | | | | | | - Patrick Meijer
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Ceder R Raben
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Jack Spithoven
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | | | - Dick J J Heederik
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Wietske Dohmen
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
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2
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Van Gompel L, Dohmen W, Luiken REC, Bouwknegt M, Heres L, van Heijnsbergen E, Jongerius-Gortemaker BGM, Scherpenisse P, Greve GD, Tersteeg-Zijderveld MHG, Wadepohl K, Ribeiro Duarte AS, Muñoz-Gómez V, Fischer J, Skarżyńska M, Wasyl D, Wagenaar JA, Urlings BAP, Dorado-García A, Wouters IM, Heederik DJJ, Schmitt H, Smit LAM. Occupational Exposure and Carriage of Antimicrobial Resistance Genes (tetW, ermB) in Pig Slaughterhouse Workers. Ann Work Expo Health 2021; 64:125-137. [PMID: 31883001 PMCID: PMC9194797 DOI: 10.1093/annweh/wxz098] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 11/30/2019] [Accepted: 12/13/2019] [Indexed: 01/05/2023] Open
Abstract
Objectives Slaughterhouse staff is occupationally exposed to antimicrobial resistant bacteria. Studies reported high antimicrobial resistance gene (ARG) abundances in slaughter pigs. This cross-sectional study investigated occupational exposure to tetracycline (tetW) and macrolide (ermB) resistance genes and assessed determinants for faecal tetW and ermB carriage among pig slaughterhouse workers. Methods During 2015–2016, 483 faecal samples and personal questionnaires were collected from workers in a Dutch pig abattoir, together with 60 pig faecal samples. Human dermal and respiratory exposure was assessed by examining 198 carcass, 326 gloves, and 33 air samples along the line, next to 198 packed pork chops to indicate potential consumer exposure. Samples were analyzed by qPCR (tetW, ermB). A job exposure matrix was created by calculating the percentage of tetW and ermB positive carcasses or gloves for each job position. Multiple linear regression models were used to link exposure to tetW and ermB carriage. Results Workers are exposed to tetracycline and macrolide resistance genes along the slaughter line. Tetw and ermB gradients were found for carcasses, gloves, and air filters. One packed pork chop contained tetW, ermB was non-detectable. Human faecal tetW and ermB concentrations were lower than in pig faeces. Associations were found between occupational tetW exposure and human faecal tetW carriage, yet, not after model adjustments. Sampling round, nationality, and smoking were determinants for ARG carriage. Conclusion We demonstrated clear environmental tetracycline and macrolide resistance gene exposure gradients along the slaughter line. No robust link was found between ARG exposure and human faecal ARG carriage.
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Affiliation(s)
- Liese Van Gompel
- Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Wietske Dohmen
- Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Roosmarijn E C Luiken
- Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | | | | | - Eri van Heijnsbergen
- Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Betty G M Jongerius-Gortemaker
- Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Peter Scherpenisse
- Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Gerdit D Greve
- Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | | | - Katharina Wadepohl
- Field Station for Epidemiology, University of Veterinary Medicine Hannover Foundation, Bakum, Germany
| | - Ana Sofia Ribeiro Duarte
- Section for Genomic Epidemiology, National Food Institute, Technical University of Denmark, Lyngby, Denmark
| | | | - Jennie Fischer
- German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Straße, Berlin, Germany
| | | | - Dariusz Wasyl
- National Veterinary Research Institute (PIWet), Puławy, Poland
| | - Jaap A Wagenaar
- Wageningen, Bioveterinary Research, Lelystad, The Netherlands.,Department of Infectious Diseases and Immunology (I&I), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | | | - Alejandro Dorado-García
- Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Inge M Wouters
- Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Dick J J Heederik
- Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Heike Schmitt
- Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.,Centre for Infectious Disease Control (RIVM), National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Lidwien A M Smit
- Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
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3
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Van Gompel L, Luiken REC, Hansen RB, Munk P, Bouwknegt M, Heres L, Greve GD, Scherpenisse P, Jongerius-Gortemaker BGM, Tersteeg-Zijderveld MHG, García-Cobos S, Dohmen W, Dorado-García A, Wagenaar JA, Urlings BAP, Aarestrup FM, Mevius DJ, Heederik DJJ, Schmitt H, Bossers A, Smit LAM. Description and determinants of the faecal resistome and microbiome of farmers and slaughterhouse workers: A metagenome-wide cross-sectional study. Environ Int 2020; 143:105939. [PMID: 32679392 DOI: 10.1016/j.envint.2020.105939] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/29/2020] [Accepted: 06/30/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND By studying the entire human faecal resistome and associated microbiome, the diversity and abundance of faecal antimicrobial resistance genes (ARGs) can be comprehensively characterized. Prior culture-based studies have shown associations between occupational exposure to livestock and carriage of specific antimicrobial resistant bacteria. Using shotgun metagenomics, the present study investigated 194 faecal resistomes and bacteriomes from humans occupationally exposed to ARGs in livestock (i.e. pig and poultry farmers, employees and family members and pig slaughterhouse workers) and a control population (Lifelines cohort) in the Netherlands. In addition, we sought to identify determinants for the human resistome and bacteriome composition by applying a combination of multivariate (NMDS, PERMANOVA, SIMPER and DESeq2 analysis) and multivariable regression analysis techniques. RESULTS Pig slaughterhouse workers and pig farmers carried higher total ARG abundances in their stools compared to broiler farmers and control subjects. Tetracycline, β-lactam and macrolide resistance gene clusters dominated the resistome of all studied groups. No significant resistome alpha diversity differences were found among the four populations. However, the resistome beta diversity showed a separation of the mean resistome composition of pig and pork exposed workers from broiler farmers and controls, independent of their antimicrobial use. We demonstrated differences in resistome composition between slaughter line positions, pig versus poultry exposed workers, as well as differences between farmers and employees versus family members. In addition, we found a significant correlation between the bacteriome and resistome, and significant differences in the bacteriome composition between and within the studied subpopulations. Finally, an in-depth analysis of pig and poultry farms - of which also farm livestock resistomes were analysed - showed positive associations between the number of on-farm working hours and human faecal AMR loads. CONCLUSION We found that the total normalized faecal ARG carriage was larger in persons working in the Dutch pork production chain compared to poultry farmers and controls. Additionally, we showed significant differences in resistome and bacteriome composition of pig and pork exposed workers compared to a control group, as well as within-population (farms, slaughterhouse) compositional differences. The number of on-farm working hours and the farm type (pig or broiler) that persons live or work on are determinants for the human faecal resistome. Overall, our results may suggest direct or indirect livestock contact as a determinant for human ARG carriage. Future studies should further focus on the connection between the human and livestock resistome (i.e. transmission routes) to substantiate the evidence for livestock-associated resistome acquisition.
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Affiliation(s)
- Liese Van Gompel
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands.
| | - Roosmarijn E C Luiken
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands
| | - Rasmus B Hansen
- Intomics A/S, Lottenborgvej 26, 2800 Kongens Lyngby, Denmark
| | - Patrick Munk
- Section for Genomic Epidemiology, National Food Institute, Technical University of Denmark, Kemitorvet 204, 2800 Kongens Lyngby, Denmark
| | | | - Lourens Heres
- Vion Food Group, Boseind 15, 5281 RM Boxtel, the Netherlands
| | - Gerdit D Greve
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands
| | - Peter Scherpenisse
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands
| | - Betty G M Jongerius-Gortemaker
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands
| | - Monique H G Tersteeg-Zijderveld
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands
| | - Silvia García-Cobos
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology and Infection Prevention, 9713 GZ Groningen, the Netherlands
| | - Wietske Dohmen
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands
| | - Alejandro Dorado-García
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands
| | - Jaap A Wagenaar
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL Utrecht, the Netherlands; Wageningen Bioveterinary Research, Houtribweg 39, 8221 RA Lelystad, the Netherlands
| | | | - Frank M Aarestrup
- Section for Genomic Epidemiology, National Food Institute, Technical University of Denmark, Kemitorvet 204, 2800 Kongens Lyngby, Denmark
| | - Dik J Mevius
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL Utrecht, the Netherlands; Wageningen Bioveterinary Research, Houtribweg 39, 8221 RA Lelystad, the Netherlands
| | - Dick J J Heederik
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands
| | - Heike Schmitt
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands; Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Antonie van Leeuwenhoeklaan 9, 3721MA Bilthoven, the Netherlands
| | - Alex Bossers
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands; Wageningen Bioveterinary Research, Houtribweg 39, 8221 RA Lelystad, the Netherlands
| | - Lidwien A M Smit
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands
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4
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Yang D, Van Gompel L, Luiken REC, Sanders P, Joosten P, van Heijnsbergen E, Wouters IM, Scherpenisse P, Chauvin C, Wadepohl K, Greve GD, Jongerius-Gortemaker BGM, Tersteeg-Zijderveld MHG, Soumet C, Skarżyńska M, Juraschek K, Fischer J, Wasyl D, Wagenaar JA, Dewulf J, Schmitt H, Mevius DJ, Heederik DJJ, Smit LAM. Association of antimicrobial usage with faecal abundance of aph(3')-III, ermB, sul2 and tetW resistance genes in veal calves in three European countries. Int J Antimicrob Agents 2020; 56:106131. [PMID: 32763373 DOI: 10.1016/j.ijantimicag.2020.106131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 05/21/2020] [Accepted: 07/29/2020] [Indexed: 01/09/2023]
Abstract
BACKGROUND High antimicrobial use (AMU) and antimicrobial resistance (AMR) in veal calves remain a source of concern. As part of the EFFORT project, the association between AMU and the abundance of faecal antimicrobial resistance genes (ARGs) in veal calves in three European countries was determined. METHODS In 2015, faecal samples of veal calves close to slaughter were collected from farms located in France, Germany and the Netherlands (20 farms in France, 20 farms in the Netherlands and 21 farms in Germany; 25 calves per farm). Standardized questionnaires were used to record AMU and farm characteristics. In total, 405 faecal samples were selected for DNA extraction and quantitative polymerase chain reaction to quantify the abundance (16S normalized concentration) of four ARGs [aph(3')-III, ermB, sul2 and tetW] encoding for resistance to frequently used antimicrobials in veal calves. Multiple linear mixed models with random effects for country and farm were used to relate ARGs to AMU and farm characteristics. RESULTS A significant positive association was found between the use of trimethoprim/sulfonamides and the concentration of sul2 in faeces from veal calves. A higher weight of calves on arrival at the farm was negatively associated with aph(3')-III and ermB. Lower concentrations of aph(3')-III were found at farms with non-commercial animals present. Furthermore, farms using only water for the cleaning of stables had a significantly lower abundance of faecal ermB and tetW compared with other farms. CONCLUSION A positive association was found between the use of trimethoprim/sulfonamides and the abundance of sul2 in faeces in veal calves. Additionally, other relevant risk factors associated with ARGs in veal calves were identified, such as weight on arrival at the farm and cleaning practices.
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Affiliation(s)
- Dongsheng Yang
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.
| | - Liese Van Gompel
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Roosmarijn E C Luiken
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Pim Sanders
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Philip Joosten
- Veterinary Epidemiology Unit, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Eri van Heijnsbergen
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Inge M Wouters
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Peter Scherpenisse
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Claire Chauvin
- ANSES, Epidemiology, Health and Welfare Unit, Paris, France
| | - Katharina Wadepohl
- Außenstelle für Epidemiologie, Tierärztliche Hochschule Hannover, Hannover, Germany
| | - Gerdit D Greve
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | | | | | | | - Magdalena Skarżyńska
- Department of Microbiology, National Veterinary Research Institute, Pulawy, Poland
| | - Katharina Juraschek
- Department of Biological Safety, German Federal Institute for Risk Assessment, Berlin, Germany
| | - Jennie Fischer
- Department of Biological Safety, German Federal Institute for Risk Assessment, Berlin, Germany
| | - Dariusz Wasyl
- Department of Microbiology, National Veterinary Research Institute, Pulawy, Poland
| | - Jaap A Wagenaar
- Department of Infectious Diseases and Immunology, Utrecht University, Utrecht, The Netherlands; Department of Bacteriology and Epidemiology, Wageningen Bioveterinary Research, Lelystad, The Netherlands
| | - Jeroen Dewulf
- Veterinary Epidemiology Unit, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Heike Schmitt
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands; National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Dik J Mevius
- Department of Infectious Diseases and Immunology, Utrecht University, Utrecht, The Netherlands; Department of Bacteriology and Epidemiology, Wageningen Bioveterinary Research, Lelystad, The Netherlands
| | - Dick J J Heederik
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Lidwien A M Smit
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
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5
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Santos RR, Awati A, Roubos-van den Hil PJ, van Kempen TATG, Tersteeg-Zijderveld MHG, Koolmees PA, Smits C, Fink-Gremmels J. Effects of a feed additive blend on broilers challenged with heat stress. Avian Pathol 2019; 48:582-601. [PMID: 31389714 DOI: 10.1080/03079457.2019.1648750] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We evaluated a blend of medium-chain fatty acids (MCFA), organic acids, and a polyphenol antioxidant on gut integrity. Eighty Ross Broilers were exposed to 20-22°C (control - normothermic) or to 35-39.5°C (heat stress) for eight hours a day for a period of 1 or 5 days. Birds were fed a standard diet, or a diet supplemented with the test blend. Thereafter, birds were euthanized, and intestinal sections were excised for morphological, morphometric and gene expression analyses. Blood samples were collected for glucose-6-phosphate dehydrogenase (G6PD), glutathione peroxidase (GSH-Px) activity and trolox equivalent antioxidant capacity (TEAC) determination. Heart and liver tissues were used to quantify the expression of heat shock proteins 60 and 70 (HSP60 and HSP70, respectively) and inhibitor of kappa light chain gene enhancer in B cells alpha (IKBA). The jejunum was the most sensitive intestinal section, where heat stress modulated the expression of HSP70, of the inflammatory markers IKBA, interleukin 8 (IL-8), interferon gamma (IFNγ), and toll-like receptor 4 (TLR4). Moreover, expression of tight junctions (CLDN1, ZO1 and ZO2) and nutrient transporters (PEPT1 and EAAT3) was modulated especially in the jejunum. In conclusion, the feed additive blend protected intestines during heat stress from the decrease in villus height and crypt depth, and from the increase in villus width. Especially in the jejunum, heat stress played an important role by modulating oxidative stress and inflammation, impairing gut integrity and nutrient transport, and such deleterious effects were alleviated by the feed additive blend. RESEARCH HIGHLIGHTS Jejunum is the most sensitive intestinal segment during heat stress. Heat stress affects the expression of tight junctions and nutrient transporters. Feed management helps to alleviate the disturbances caused by heat stress. A blend of MCFA, organic acids and a polyphenol protects broilers under heat stress.
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Affiliation(s)
- Regiane R Santos
- Institute for Risk Assessment Sciences, Division of Veterinary Pharmacy, Pharmacotherapy and Toxicology, Faculty of Veterinary Medicine, Utrecht University , Utrecht , Netherlands.,Animal Sciences Post-graduation Program, Federal University of Pará , Belém , Pará , Brazil
| | - Ajay Awati
- Trouw Nutrition R&D , Boxmeer , Netherlands
| | | | - Theo A T G van Kempen
- Trouw Nutrition R&D , Boxmeer , Netherlands.,Department of Animal Science, North Carolina State University , Raleigh , NC , USA
| | - Monique H G Tersteeg-Zijderveld
- Institute for Risk Assessment Sciences, Division of Veterinary Pharmacy, Pharmacotherapy and Toxicology, Faculty of Veterinary Medicine, Utrecht University , Utrecht , Netherlands
| | - Peter A Koolmees
- Institute for Risk Assessment Sciences, Division of Veterinary Pharmacy, Pharmacotherapy and Toxicology, Faculty of Veterinary Medicine, Utrecht University , Utrecht , Netherlands
| | - Coen Smits
- Trouw Nutrition R&D , Boxmeer , Netherlands
| | - Johanna Fink-Gremmels
- Institute for Risk Assessment Sciences, Division of Veterinary Pharmacy, Pharmacotherapy and Toxicology, Faculty of Veterinary Medicine, Utrecht University , Utrecht , Netherlands
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Burt SA, Adolfse SJM, Ahad DSA, Tersteeg-Zijderveld MHG, Jongerius-Gortemaker BGM, Post JA, Brüggemann H, Santos RR. Cinnamaldehyde, Carvacrol and Organic Acids Affect Gene Expression of Selected Oxidative Stress and Inflammation Markers in IPEC-J2 Cells Exposed to Salmonella typhimurium. Phytother Res 2016; 30:1988-2000. [PMID: 27561686 PMCID: PMC5157771 DOI: 10.1002/ptr.5705] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 07/29/2016] [Accepted: 08/02/2016] [Indexed: 12/12/2022]
Abstract
Essential oils and organic acids are used as feed additives to improve health status and reduce colonization with pathogens. Although bactericidal in vitro, concentrations achieved in the animal gut are probably not lethal to pathogens. The aim of this study was to investigate the effects of cinnamaldehyde, carvacrol and cinnamic, lactic and propionic acids on the ability of Salmonella typhimurium ATCC 14028 (ST) to invade intestinal epithelial cells (IPEC-J2) and on the expression levels of immune related genes in the cells. The minimum inhibitory concentration (MIC) and non-inhibitory concentration (NIC) were determined and influence on the invasion capacity of ST was investigated. The structure of fimbriae and flagella was analysed by electron microscopy, and expression levels of HSP70, IkBa, IL-8 and IL-10 in the IPEC-J2 cells were carried out by q-PCR. Cinnamaldehyde, carvacrol and cinnamic and propionic acids inhibited ST invasion but not cell viability, bacterial viability and motility or the development of flagella. Propionic acid and cinnamaldehyde in combination with cinnamic acid caused structural impairment of fimbriae. Cinnamaldehyde up-regulated expression of HSP70 irrespective of the presence of organic acids or ST; exposure to carvacrol induced HSP70 only in the presence of propionic acid and ST. © 2016 The Authors. Phytotherapy Research published by John Wiley & Sons Ltd.
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Affiliation(s)
- Sara A Burt
- Institute for Risk Assessment Sciences, Division of Veterinary Public Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Simone J M Adolfse
- Institute for Risk Assessment Sciences, Division of Veterinary Public Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Dina S A Ahad
- Institute for Risk Assessment Sciences, Division of Veterinary Public Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Monique H G Tersteeg-Zijderveld
- Institute for Risk Assessment Sciences, Division of Veterinary Public Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Betty G M Jongerius-Gortemaker
- Institute for Risk Assessment Sciences, Division of Veterinary Public Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Jan A Post
- Biology Department, Faculty of Science, Utrecht University, Utrecht, The Netherlands
| | | | - Regiane R Santos
- Institute for Risk Assessment Sciences, Division of Veterinary Pharmacy, Pharmacotherapy and Toxicology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.,Animal Sciences Post-graduation Program, Federal University of Pará, Belém, Pará, Brazil
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7
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Santos RR, Awati A, Roubos-van den Hil PJ, Tersteeg-Zijderveld MHG, Koolmees PA, Fink-Gremmels J. Quantitative histo-morphometric analysis of heat-stress-related damage in the small intestines of broiler chickens. Avian Pathol 2014; 44:19-22. [PMID: 25410755 DOI: 10.1080/03079457.2014.988122] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The aim of the current research was to present a methodological approach allowing reproducible morphometric and morphological (Chiu/Park scale) analyses of the alterations in the intestines of broilers exposed to heat stress. Ross broilers were exposed over four consecutive days to a high-temperature regime in controlled climate rooms, with a day temperature of 39°C (±1°C) and a night temperature of 25°C (±1°C), respectively. A control group was kept at an ambient temperature of 25°C (±1°C) during the entire experimental period. At the end of the exposure period, the birds were sacrificed and specimens were taken of the duodenum, jejunum and ileum for histology. Blood was collected for oxidative stress analysis. Histo-morphological and morphometric analyses of the intestines indicated that the duodenum and jejunum showed more damage than the ileum. The major alterations in the control intestines were limited to the villus tips, while heat stress led to villus denudation and crypt damage. When compared with morphologically normal villi, heat-stress-associated alterations were also observed in villus height (decreased), villus breadth at base (increased) and epithelial cell area (decreased). Birds exposed to heat stress presented with an increase in glutathione peroxidase activity and a decreased antioxidant capacity. It can be concluded that the chosen model allows a reproducible quantification of heat stress effects, which is suitable for the evaluation of dietary intervention strategies to combat heat stress conditions.
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Affiliation(s)
- Regiane R Santos
- a Faculty of Veterinary Medicine , Utrecht University , Utrecht , the Netherlands
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Burt SA, Tersteeg-Zijderveld MHG, Jongerius-Gortemaker BGM, Vervelde L, Vernooij JCM. In vitro inhibition of Eimeria tenella invasion of epithelial cells by phytochemicals. Vet Parasitol 2012; 191:374-8. [PMID: 23021265 DOI: 10.1016/j.vetpar.2012.09.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Revised: 08/29/2012] [Accepted: 09/02/2012] [Indexed: 11/29/2022]
Abstract
Resistance to coccidiostats and possible future restrictions on their use raise the need for alternative methods of reducing coccidiosis in poultry. The aim of this study was to evaluate the effect of selected phytochemicals on Eimeria tenella sporozoite invasion in vitro. Four phytochemicals were selected on the basis that they reduce the virulence of Eimeria spp. and/or provide immune modulatory benefits to host cells: betaine, carvacrol, curcumin and Echinacea purpurea extract (EP). Madin-Darby bovine kidney (MDBK) cells were covered by medium containing phytochemicals at the highest concentration which was non-toxic to the cells. Salinomycin 50 μg/ml was positive control; negative control was medium only. E. tenella (Houghton strain) sporozoites were added to wells and after incubation for 2, 4 or 20 h at 37°C, cells were fixed and stained with hematoxylin-eosin. Ten evenly spaced fields per well were photographed and the percentage of cells invaded by sporozoites was calculated and normalized to the control. At 2h, carvacrol, curcumin and EP showed a significantly lower percentage of sporozoite invasion than the untreated control; in contrast, betaine treatment represented a significantly higher invasion percentage. Combining carvacrol with EP inhibited E. tenella invasion more effectively than applying the compounds individually, but the further addition of curcumin did not reduce invasion further. In conclusion, this study shows that invasion of MDBK epithelial cells by E. tenella sporozoites is inhibited in the presence of carvacrol, curcumin, or EP and enhanced by betaine. There may be potential for developing these phytochemicals as anti-coccidial feed or water additives for poultry.
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Affiliation(s)
- S A Burt
- Institute for Risk Assessment Sciences, Division of Veterinary Public Health, Utrecht University, Utrecht, The Netherlands.
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van Dijk A, Herrebout M, Tersteeg-Zijderveld MHG, Tjeerdsma-van Bokhoven JLM, Bleumink-Pluym N, Jansman AJM, Veldhuizen EJA, Haagsman HP. Campylobacter jejuni is highly susceptible to killing by chicken host defense peptide cathelicidin-2 and suppresses intestinal cathelicidin-2 expression in young broilers. Vet Microbiol 2012; 160:347-54. [PMID: 22728124 DOI: 10.1016/j.vetmic.2012.05.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Revised: 05/24/2012] [Accepted: 05/25/2012] [Indexed: 01/19/2023]
Abstract
Little is known about the interactions of chicken host defense peptides (HDPs) with Campylobacter jejuni in young chicks. To examine the role of the chicken HDP, cathelicidin-2 (CATH-2) in host-pathogen interactions we challenged 4-day-old Ross 308 broilers with a chicken-derived C. jejuni isolate (WS356) and used the chicken pathogen Salmonella enterica Enteritidis phage type 4 (FGT1) as a reference. Immunohistochemical staining was used to localize CATH-2, C. jejuni and Salmonella enteritidis. Intestinal CATH-2 mRNA expression levels were determined by quantitative PCR. Antibacterial activities of CATH-2 peptide against C. jejuni and S. enteritidis isolates were assessed in colony count assays. In contrast to S. enteritidis, C. jejuni was not seen to attach to intestinal epithelium and C. jejuni challenge did not result in recruitment of CATH-2 containing heterophils to the small intestinal lamina propria. Minimal inhibitory concentrations found for CATH-2 peptide against human- and chicken-derived C. jejuni isolates were similar (0.6-2.5 μM) and much lower than for S. enteritidis (20 μM). Compared to wild-type C. jejuni 81116, the lipooligosaccharide (LOS)-deficient 81116ΔwaaF mutant was much more susceptible to CATH-2. Interestingly, CATH-2 mRNA expression levels in the small intestine were significantly lower 48 h p.i. in C. jejuni-challenged chicks. These findings indicate that human clinical and chicken-derived C. jejuni are equally highly susceptible to chicken CATH-2 peptide and that C. jejuni uses LOS to protect itself to some extent against HDPs. Moreover, suppression of intestinal CATH-2 expression levels may be part of the C. jejuni immune evasion strategy.
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Affiliation(s)
- Albert van Dijk
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, P.O. Box 80.165, 3508 TD Utrecht, The Netherlands
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Dietz MW, van Mourik S, Tøien Ø, Koolmees PA, Tersteeg-Zijderveld MHG. Participation of breast and leg muscles in shivering thermogenesis in young turkeys and guinea fowl. J Comp Physiol B 1997. [DOI: 10.1007/s003600050096] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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