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Özkan H, Keçeli HH, Kaya U, Dalkiran S, Yüksel M, Tek E, Yakan A. Considering potential roles of selected MicroRNAs in evaluating subclinical mastitis and Milk quality in California mastitis test (+) and infected bovine milk. Anim Sci J 2024; 95:e13959. [PMID: 38769761 DOI: 10.1111/asj.13959] [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: 11/07/2023] [Revised: 04/13/2024] [Accepted: 04/25/2024] [Indexed: 05/22/2024]
Abstract
This study investigates the relationships between subclinical mastitis and milk quality with selected microRNAs in cow milk. California Mastitis Test (CMT)-positive (n = 20) and negative (n = 20) samples were compared (Experiment I). Additionally, samples with CMT-positive but microbiological-negative, as well as positive for only Staphylococcus subspecies (Staph spp.) and only Streptococcus subspecies (Strep spp.) were examined (Experiment II). Four groups were formed in Experiment II: Group I (CMT and microbiological-negative) (n = 20), Group II (CMT-positive but microbiological-negative) (n = 10), Group III (Staph spp.) (n = 5), Group IV (Strep spp.) (n = 5). While electrical conductivity, somatic cell count (SCC), malondialdehyde (MDA) increased, miR-27a-3p and miR-223 upregulated and miR-125b downregulated in the CMT-positive group in Experiment I. SCC and MDA were higher in CMT-positive groups. miR-27a-3p and miR-223 upregulated in Groups III and IV. While miR-155 is upregulated, miR-125b downregulated in Group IV. Milk fat is positively correlated with miR-148a and miR-223. As miR-27a-3p positively correlated with SCC and MDA, miR-125b negatively correlated with electrical conductivity and SCC. miR-148a and MDA were positively correlated. miR-155 was correlated with fat-free dry matter, protein, lactose, and freezing point. miR-223 was positively correlated with SCC and miR-148a. Results particularly highlight miR-27a-3p and miR-223 as potential biomarkers in subclinical mastitis, especially those caused by Staph spp. and Strep spp., while miR-148a, miR-155, and miR-223 stand out in determining milk quality.
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Affiliation(s)
- Hüseyin Özkan
- Faculty of Veterinary Medicine, Department of Genetics, Hatay Mustafa Kemal University, Hatay, Turkiye
| | - Hasan Hüseyin Keçeli
- Faculty of Veterinary Medicine, Department of Genetics, Hatay Mustafa Kemal University, Hatay, Turkiye
| | - Ufuk Kaya
- Faculty of Veterinary Medicine, Department of Biostatistics, Hatay Mustafa Kemal University, Hatay, Turkiye
| | - Sevda Dalkiran
- Institute of Health Sciences, Department of Molecular Biochemistry and Genetics, Hatay Mustafa Kemal University, Hatay, Turkiye
| | - Murat Yüksel
- Faculty of Veterinary Medicine, Department of Veterinary Obstetrics and Gynecology, Hatay Mustafa Kemal University, Hatay, Turkiye
| | - Erhan Tek
- Faculty of Veterinary Medicine, Department of Microbiology, Hatay Mustafa Kemal University, Hatay, Turkiye
| | - Akın Yakan
- Faculty of Veterinary Medicine, Department of Genetics, Hatay Mustafa Kemal University, Hatay, Turkiye
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Kour S, Sharma N, N B, Kumar P, Soodan JS, Santos MVD, Son YO. Advances in Diagnostic Approaches and Therapeutic Management in Bovine Mastitis. Vet Sci 2023; 10:449. [PMID: 37505854 PMCID: PMC10384116 DOI: 10.3390/vetsci10070449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/30/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023] Open
Abstract
Mastitis causes huge economic losses to dairy farmers worldwide, which largely negatively affects the quality and quantity of milk. Mastitis decreases overall milk production, degrades milk quality, increases milk losses because of milk being discarded, and increases overall production costs due to higher treatment and labour costs and premature culling. This review article discusses mastitis with respect to its clinical epidemiology, the pathogens involved, economic losses, and basic and advanced diagnostic tools that have been used in recent times to diagnose mastitis effectively. There is an increasing focus on the application of novel therapeutic approaches as an alternative to conventional antibiotic therapy because of the decreasing effectiveness of antibiotics, emergence of antibiotic-resistant bacteria, issue of antibiotic residues in the food chain, food safety issues, and environmental impacts. This article also discussed nanoparticles'/chitosan's roles in antibiotic-resistant strains and ethno-veterinary practices for mastitis treatment in dairy cattle.
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Affiliation(s)
- Savleen Kour
- Division of Veterinary Medicine, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu, R.S. Pura, Jammu 181102, India
| | - Neelesh Sharma
- Division of Veterinary Medicine, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu, R.S. Pura, Jammu 181102, India
| | - Balaji N
- Division of Veterinary Medicine, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu, R.S. Pura, Jammu 181102, India
| | - Pavan Kumar
- Department of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141004, India
| | - Jasvinder Singh Soodan
- Division of Veterinary Clinical Complex, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu, R.S. Pura, Jammu 181102, India
| | - Marcos Veiga Dos Santos
- Department of Animal Sciences, School of Veterinary Medicine and Animal Sciences, University of São Paulo, Pirassununga 13635-900, São Paulo, Brazil
| | - Young-Ok Son
- Department of Animal Biotechnology, Faculty of Biotechnology, College of Applied Life Sciences and Interdisciplinary Graduate Program in Advanced Convergence Technology and Science, Jeju National University, Jeju 690756, Republic of Korea
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Sharifi A, Sobhani K, Mahmoudi P. A systematic review and meta-analysis revealed a high-level antibiotic resistance of bovine mastitis Staphylococcus aureus in Iran. Res Vet Sci 2023; 161:23-30. [PMID: 37302281 DOI: 10.1016/j.rvsc.2023.05.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/28/2023] [Accepted: 05/31/2023] [Indexed: 06/13/2023]
Abstract
Staphylococcus aureus (S. aureus) is a frequent and major etiological agent of bacterial bovine mastitis, leading to high economic losses. This pathogen readily becomes resistant to many antibiotics, resulting in persistent noncurable intramammary infection (IMI) in animals and the development of multidrug-resistant (MDR) strains. The objectives of this study were to evaluate the prevalence of antimicrobial resistance (AMR) of S. aureus strains causing bovine mastitis in Iran according to published data from 2000 to 2021. As there is still a dearth of information on the AMR of S. aureus from Iranian bovine mastitis, the primary focus and subgroup analysis of the present study was performed on Iranian isolates. A systematic review was done according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Based on the initial search, 1006 article were identified. According to inclusion and exclusion criteria and removing duplications, 55 English articles and 13 Persian articles (a total of 68 articles) were finally analyzed. The highest overall prevalence of resistance was reported against penicillin G (p-estimate = 0.568 for all isolates, and p-estimate = 0.838 for Iranian isolates), followed by ampicillin (p-estimate = 0.554, and p-estimate = 0.670 for all isolates and Iranian isolates, respectively) and amoxicillin (p-estimate = 0.391, and p-estimate = 0.695 for all isolates and Iranian isolates, respectively). Besides, the lowest prevalence of resistant isolates was related to trimethoprim-sulfamethoxazole (p-estimate = 0.108 and 0.118 for all isolates and Iranian isolates, respectively) and gentamycin (p-estimate = 0.163 and 0.190, for all isolates and Iranian isolates, respectively). Our analysis showed that the Iranian isolates were more resistant to all antibiotics than those of all isolates. This difference was significant in the case of penicillin G, ampicillin, and erythromycin at 5%. To the best of our knowledge, except for ampicillin, AMR has increased over time for all the studied antibiotics in Iranian isolates. This increased rate was significant for penicillin G, amoxicillin, and tetracycline (p < 0.1). No differences in AMR were detected regarding the mastitis types (clinical vs. subclinical mastitis) for almost evaluated antibiotics. In conclusion, the prevalence of AMR S. aureus isolated from IMI was high particularly for bovine mastitis used antibiotics like penicillin G and ampicillin. Additionally, according to the increasing rate of AMR S. aureus in recent years in Iran, control strategies should be reinforced to avoid the spread of this pathogen and drug resistance.
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Affiliation(s)
- Aram Sharifi
- Department of Animal Science, Faculty of Agriculture, University of Kurdistan, P.O. Box 416, Sanandaj, Kurdistan, Iran.
| | - Keyvan Sobhani
- Department of Animal Science, Faculty of Agriculture, University of Kurdistan, P.O. Box 416, Sanandaj, Kurdistan, Iran
| | - Peyman Mahmoudi
- Department of Animal Science, Faculty of Agriculture, University of Kurdistan, P.O. Box 416, Sanandaj, Kurdistan, Iran
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Advances in biosensor development for the determination of antibiotics in cow's milk - A review. TALANTA OPEN 2022. [DOI: 10.1016/j.talo.2022.100145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Badawy B, Elafify M, Farag AMM, Moustafa SM, Sayed-Ahmed MZ, Moawad AA, Algammal AM, Ramadan H, Eltholth M. Ecological Distribution of Virulent Multidrug-Resistant Staphylococcus aureus in Livestock, Environment, and Dairy Products. Antibiotics (Basel) 2022; 11:antibiotics11111651. [PMID: 36421295 PMCID: PMC9686664 DOI: 10.3390/antibiotics11111651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/13/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
Staphylococcus aureus is one of the most common causes of mastitis, leading to severe economic losses in the dairy industry. It is also zoonotic, with potential risks to public health. This study aimed to detect the occurrence of S. aureus-resistant strains isolated from cattle, buffalo, their environment, milk and dairy products; and to investigate the extent of animal, ecological, and food contamination by methicillin-resistant (MRSA) or enterotoxigenic S. aureus. Samples (n = 350) were collected from four animal (two cattle and two buffalo) farms, i.e., their environment. Thirty Karish cheese samples were collected from 10 markets in Mansoura, Egypt. S. aureus was detected in 17.9%, 17.6%, and 16.7% of samples collected from cattle, buffalo and Karish cheese, respectively. About 19% of isolated S. aureus strains carried the mecA gene. The distribution of the mecA gene was high in isolates from Karish cheese (60%), followed by samples collected from buffalo (16.2%) and cattle (16%). More than 34% of isolated S. aureus strains were enterotoxigenic, and the presence of enterotoxin genes was higher in isolates from Karish cheese (80%) than those from cattle (48%) and buffalo (18.9%). The most predominant enterotoxin gene among isolated S. aureus strains was the sea gene (26.9%), followed by sec (4.5%) and sed (3%) genes. Isolated strains were resistant to clindamycin (100%), kanamycin (97%), nalidixic acid (86.6%), cefotaxime (73.1%) sulphamethazole—trimethoprim (65.6%). Meanwhile, 95.5%, 94%, 86.6% and 77.7% of S. aureus strains were sensitive to ciprofloxacin, amikacin, imipenem and both cefoxitin and gentamycin, respectively. In conclusion, the presence of enterotoxigenic- and methicillin-resistant S. aureus strains in animals, their environment, and dairy products represents a public health concern, particularly in small-scale dairy farms in Egypt. To reduce the risk of infection of livestock and humans with resistant strains, strict regulations and guidelines for antimicrobial use in such a system are urgently required.
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Affiliation(s)
- Basma Badawy
- Department of Hygiene and Zoonoses, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
- Correspondence: (B.B.); (H.R.)
| | - Mahmoud Elafify
- Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Alshimaa M. M. Farag
- Department of Internal Medicine, Infectious and Fish Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Samar M. Moustafa
- Department of Zoonoses, Faculty of Veterinary Medicine, Benha University, Benha 13511, Egypt
| | - Mohamed Z. Sayed-Ahmed
- Department of Pharmacy Practice, College of Pharmacy, Jazan University, Jazan 82722, Saudi Arabia
| | - Amira A. Moawad
- Friedrich-Loeffler-Institut Institute of Bacterial Infections and Zoonoses, Naumburger Str. 96a, 07743 Jena, Germany
- Animal Health Research Institute, Agriculture Research Center (ARC), Giza 12618, Egypt
| | - Abdelazeem M. Algammal
- Department of Bacteriology, Immunology and Mycology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt
| | - Hazem Ramadan
- Department of Hygiene and Zoonoses, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
- Correspondence: (B.B.); (H.R.)
| | - Mahmoud Eltholth
- Global Academy of Agriculture and Food Systems, The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Campus, Midlothian, Edinburgh EH25 9RG, UK
- Department of Animal Medicine, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
- Department of Health Studies, Royal Holloway University of London, Egham TW20 0EX, UK
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Subclinical mastitis in dairy cows in south-Asian countries: a review of risk factors and etiology to prioritize control measures. Vet Res Commun 2022; 46:621-640. [PMID: 35701569 DOI: 10.1007/s11259-022-09948-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 05/30/2022] [Indexed: 10/18/2022]
Abstract
Mastitis is a major production disease, causing significant economic losses for dairy farmers in South-Asian countries, as well as other parts of the world. Udder health control programs (UHCP) have been established in developed countries as an effective strategy for mastitis control but have not yet been introduced in South-Asian low-income countries like Bangladesh, India, Pakistan, and Sri Lanka. To launch UHCP successfully in dairy herds in South-Asia, it is important to know the current prevalence and risk factors for subclinical mastitis (SCM). Therefore, a narrative literature review was conducted with the aim to describe the dairy sector, the prevalence of SCM and its causal agents, risk factors for mastitis occurrence and the control measures suggested by different studies conducted in the selected countries. The literature revealed that India had the highest cattle population. Milking was mainly done by hand in all of the studied countries. Stall feeding was done in Bangladesh and Sri Lanka and limited access to grazing was also reported in some farms in India and Pakistan. There was substantial variation in the prevalence of SCM between studies in all 4 countries, ranging from about 20% to about 80%, but the average prevalence across all studies was high (50%). The most common causal agents for SCM were non-aureus staphylococci (NAS), Staphylococcus (S.) aureus, Streptococcus spp. and Escherichia (E.) coli. The management related risk factors reported for SCM were stall feeding of cows, a higher stock density, cracked floors, open drains, the presence of flies, poor drainage, peri-parturient diseases, infrequent dung removal and earth floors. The control measures suggested in these studies were to improve the hygiene and sanitation of cows, to improve the cleanliness of farms and milker's hands, to apply dry cow therapy, supplementing micronutrients and routine screening for SCM combined with taking intervention measures like isolation of cows or milking infected cows last, and proper treatment. Also, full hand milking, complete milking, machine milking, and providing feed and water immediately after milking have been recommended. Finally, we show that current literature often studies the same set of (non-manageable) risk factors, so more research is needed to obtain a comprehensive picture of the determinants of SCM. Randomized controlled trials are needed to truly quantify the effect of intervention under field conditions. Altogether, our work gives an overview of the udder health situation in South-Asia and provides the basis for the design of UHCP in this region.
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Cui B, Sun Y, Wang K, Liu Y, Fu H, Wang Y, Wang Y. Pasteurization mechanism on the cellular level of radio frequency heating and its possible non-thermal effect. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103026] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Premaratne A, Zhang H, Wang R, Chinivasagam N, Billington C. Phage Biotechnology to Mitigate Antimicrobial Resistance in Agriculture. SUSTAINABLE AGRICULTURE REVIEWS 2021. [DOI: 10.1007/978-3-030-58259-3_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Roldan-Montes V, Cardoso DF, Hurtado-Lugo NA, do Nascimento AV, Santos DJDA, Scalez DCB, de Freitas AC, Herrera AC, Albuquerque LG, de Camargo GMF, Tonhati H. Polymorphisms in TLR4 Gene Associated With Somatic Cell Score in Water Buffaloes ( Bubalus bubalis). Front Vet Sci 2020; 7:568249. [PMID: 33251259 PMCID: PMC7676892 DOI: 10.3389/fvets.2020.568249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 10/14/2020] [Indexed: 11/16/2022] Open
Abstract
Considering the importance of the diseases affecting the productive performance of animals in the dairy industry worldwide, it is necessary to implement tools that help to control and limit the occurrence of such diseases. As the increased somatic cell counts (SCC) are a direct expression of the inflammatory process, they are candidates to become the usual parameter for assessing udder health regarding milk quality and for monitoring mastitis incidences. Toll-Like Receptors are membrane proteins that play a key role in immunity, recognizing pathogens and, subsequently, activating immune responses. The present study was conducted to identify single nucleotide polymorphisms in the TLR4 gene of buffaloes and to analyze its associations with somatic cell counts. DNA samples of 120 Murrah buffaloes were used. The whole coding region of the TLR4 gene was amplified by polymerase chain reaction reactions and sequenced for polymorphism scanning. A total of 13 polymorphisms were identified for the sequenced regions of the TLR4, most of which are in the coding region. The association with the somatic cell score was highly significant (p < 0.001) for all identified polymorphisms of TLR4 gene (g.54621T>A, g.54429G>T, g.54407T>A, g.46616C>A, g.46613T>G, g.46612A>G, g.46611C>A, g.46609T>G, g.46541C>G, g.46526C>A, g.46516T>C, g.46376C>T, g.46372T>C). Therefore, it is suggested that the markers of the TLR4 gene can be used as molecular markers for mastitis resistance in buffaloes, due to their association with somatic cell counts.
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Affiliation(s)
- Valentina Roldan-Montes
- Department of Animal Science, School of Agricultural and Veterinarian Science, São Paulo State University (UNESP), Jaboticabal, Brazil
| | - Diercles Francisco Cardoso
- Department of Animal Science, School of Agricultural and Veterinarian Science, São Paulo State University (UNESP), Jaboticabal, Brazil.,Department of Animal Biosciences, Centre for Genetic Improvement of Livestock, University of Guelph, Guelph, ON, Canada
| | | | - André Vieira do Nascimento
- Department of Animal Science, School of Agricultural and Veterinarian Science, São Paulo State University (UNESP), Jaboticabal, Brazil
| | - Daniel Jordan de Abreu Santos
- Department of Animal Science, School of Agricultural and Veterinarian Science, São Paulo State University (UNESP), Jaboticabal, Brazil.,Department of Animal and Avian Sciences, University of Maryland, College Park, MD, United States
| | - Daiane Cristina Becker Scalez
- Department of Animal Science, School of Agricultural and Veterinarian Science, São Paulo State University (UNESP), Jaboticabal, Brazil.,Department of Animal Biosciences, Centre for Genetic Improvement of Livestock, University of Guelph, Guelph, ON, Canada
| | - Ana Cláudia de Freitas
- Department of Animal Science, School of Agricultural and Veterinarian Science, São Paulo State University (UNESP), Jaboticabal, Brazil
| | - Ana Cristina Herrera
- Department of Animal Science, School of Agricultural and Veterinarian Science, São Paulo State University (UNESP), Jaboticabal, Brazil
| | - Lucia Galvão Albuquerque
- Department of Animal Science, School of Agricultural and Veterinarian Science, São Paulo State University (UNESP), Jaboticabal, Brazil
| | | | - Humberto Tonhati
- Department of Animal Science, School of Agricultural and Veterinarian Science, São Paulo State University (UNESP), Jaboticabal, Brazil
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Xie Z, Peng Y, Li C, Luo X, Wei Z, Li X, Yao Y, Fang T, Huang L. Growth kinetics of Staphylococcus aureus and background microorganisms in camel milk. J Dairy Sci 2020; 103:9958-9968. [PMID: 32981731 DOI: 10.3168/jds.2020-18616] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 07/02/2020] [Indexed: 11/19/2022]
Abstract
Staphylococcus aureus is a common foodborne pathogen that is ubiquitous in nature. Consumption of contaminated foods, such as dairy products, can lead to food poisoning caused by heat-stable staphylococcal toxins that are not easily destroyed during pasteurization. The objective of this study was to investigate the growth kinetics of S. aureus and background microorganisms in camel milk stored at different temperatures between 8 and 43°C using one-step kinetic analysis to estimate the kinetic parameters from the observed growth curves. The growth of S. aureus showed apparent lag, exponential, and stationary phases, whereas no or negligible lag phase was observed for background microorganisms. Data analysis showed that the estimated minimum, optimum, and maximum growth temperatures were 5.9, 42.0, and 49.2°C for S. aureus, and 3.0, 38.6, and 49.2°C for the background microorganisms, respectively. The estimated optimum specific growth rate was higher for S. aureus (1.24 h-1) than for background microorganisms (0.995 h-1). This study found that camel milk may inhibit the growth of S. aureus, as it exhibits a lower specific growth rate than that in cow milk or cooked potato. It also has a longer lag phase than that in cow milk at comparable temperature ranges. This unique property is probably related to the presence of some antimicrobial compounds naturally occurring in camel milk. Validation of kinetic parameters and models showed that the root mean square error of prediction was only 0.5 log cfu/mL for S. aureus and background microorganisms, suggesting that the models are reasonably accurate. These models can be used for conducting risk assessments of S. aureus and predicting the general microbiological shelf life of camel milk to prevent foodborne staphylococcal poisoning.
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Affiliation(s)
- Zhaopeng Xie
- School of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350001, Fujian Province, China
| | - Yabo Peng
- School of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350001, Fujian Province, China
| | - Changcheng Li
- School of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350001, Fujian Province, China
| | - Xiaojuan Luo
- School of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350001, Fujian Province, China
| | - Zhaoyi Wei
- School of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350001, Fujian Province, China
| | - Xiaoting Li
- School of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350001, Fujian Province, China
| | - Yukun Yao
- School of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350001, Fujian Province, China
| | - Ting Fang
- School of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350001, Fujian Province, China.
| | - Lihan Huang
- Residue Chemistry and Predictive Microbiology Research Unit, Eastern Regional Research Center, USDA Agricultural Research Service, Wyndmoor, PA 19038.
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Ata Z, Buyukcangaz E. A 13-Plex PCR for high-resolution melting-based screening of clinically important Staphylococcus species in animals. J Microbiol Methods 2019; 164:105673. [PMID: 31348952 DOI: 10.1016/j.mimet.2019.105673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 07/15/2019] [Accepted: 07/19/2019] [Indexed: 11/30/2022]
Abstract
A single-tube multiplex real-time PCR targeting the nuclease (nuc) gene and subsequent high-resolution melting analysis (HRMA) were used to identify 13 different Staphylococcus species. The nuc gene was targeted due to its low intraspecies variation and the greater interspecies variation than the 16S rRNA gene in Staphylococcus. We used HRMA software that can store and compare HRMA profiles from different runs as long as the runs contain the same reference reaction. Thus, we reduced the 14 PCRs to 2 different PCRs, one targeting the unknown sequence and the other targeting the reference sequences to screen 13 different Staphylococcus species. The specificity of the developed method was tested on 16 different Staphylococcus reference strains and 115 different field strains that were isolated from the milk of cattle with subclinical mastitis. We conclude that the method can be used to quickly and cost-effectively differentiate Staphylococcus aureus (S. aureus) from other Staphylococcus species (S. epidermidis, S. lugdunensis, S. schleiferi, S. hyicus, S. chromogenes, S. lentus, S. haemolyticus, S. xylosus, S. saprophyticus, S. warneri, S. simulans and S. hominis).
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Affiliation(s)
- Zafer Ata
- (Military Veterinary School and Educational Central Commandership, Gemlik, Bursa, Turkey).
| | - Esra Buyukcangaz
- Bursa Uludag University, Faculty of Veterinary Medicine, Department of Microbiology, Nilufer, 16059, Gorukle, Bursa, Turkey
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