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Li M, Li Z, Deng M, Liu D, Sun B, Liu J, Guo J, Guo Y. Overview of Bovine Mastitis: Application of Metabolomics in Screening Its Predictive and Diagnostic Biomarkers. Animals (Basel) 2024; 14:2264. [PMID: 39123790 PMCID: PMC11311089 DOI: 10.3390/ani14152264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 07/27/2024] [Accepted: 08/02/2024] [Indexed: 08/12/2024] Open
Abstract
Bovine mastitis is an inflammatory disease of the mammary glands, and its pathogenesis and diagnosis are complicated. Through qualitative and quantitative analysis of small-molecule metabolites, the metabolomics technique plays an important role in finding biomarkers and studying the metabolic mechanism of bovine mastitis. Therefore, this paper reviews the predictive and diagnostic biomarkers of bovine mastitis that have been identified using metabolomics techniques and that are present in samples such as milk, blood, urine, rumen fluid, feces, and mammary tissue. In addition, the metabolic pathways of mastitis-related biomarkers in milk and blood were analyzed; it was found that the tricarboxylic acid (TCA) cycle was the most significant (FDR = 0.0015767) pathway in milk fluid, and glyoxylate and dicarboxylate metabolism was the most significant (FDR = 0.0081994) pathway in blood. The purpose of this review is to provide useful information for the prediction and early diagnosis of bovine mastitis.
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Affiliation(s)
- Muyang Li
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.L.); (Z.L.); (M.D.); (D.L.); (B.S.)
| | - Zhongjie Li
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.L.); (Z.L.); (M.D.); (D.L.); (B.S.)
| | - Ming Deng
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.L.); (Z.L.); (M.D.); (D.L.); (B.S.)
| | - Dewu Liu
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.L.); (Z.L.); (M.D.); (D.L.); (B.S.)
| | - Baoli Sun
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.L.); (Z.L.); (M.D.); (D.L.); (B.S.)
| | - Jianying Liu
- Agro-Tech Center of Guangdong Province, Guangzhou 510500, China;
| | - Jianchao Guo
- Agro-Tech Center of Guangdong Province, Guangzhou 510500, China;
| | - Yongqing Guo
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (M.L.); (Z.L.); (M.D.); (D.L.); (B.S.)
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2
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Bisutti V, Vanzin A, Pegolo S, Toscano A, Gianesella M, Sturaro E, Schiavon S, Gallo L, Tagliapietra F, Giannuzzi D, Cecchinato A. Effect of intramammary infection and inflammation on milk protein profile assessed at the quarter level in Holstein cows. J Dairy Sci 2024; 107:1413-1426. [PMID: 37863294 DOI: 10.3168/jds.2023-23818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 09/21/2023] [Indexed: 10/22/2023]
Abstract
In this study we wanted to investigate the associations between naturally occurring subclinical intramammary infection (IMI) caused by different etiological agents (i.e., Staphylococcus aureus, Streptococcus agalactiae, Streptococcus uberis, and Prototheca spp.), in combination with somatic cell count (SCC), on the detailed milk protein profile measured at the individual mammary gland quarter. An initial bacteriological screening (time 0; T0) conducted on individual composite milk from 450 Holstein cows reared in 3 herds, was performed to identify cows with subclinical IMI. We identified 78 infected animals which were followed up at the quarter level at 2 different sampling times: T1 and T2, 2 and 6 wk after T0, respectively. A total of 529 quarter samples belonging to the previously selected animals were collected at the 2 sampling points and analyzed with a reversed phase HPLC (RP-HPLC) validated method. Specifically, we identified and quantified 4 caseins (CN), namely αS1-CN, αS2-CN, κ-CN, and β-CN, and 3 whey protein fractions, namely β-lactoglobulin, α-lactalbumin, and lactoferrin (LF), which were later expressed both quantitatively (g/L) and qualitatively (as a percentage of the total milk nitrogen content, % N). Data were analyzed with a hierarchical linear mixed model with the following fixed effects: days in milk (DIM), parity, herd, SCC, bacteriological status (BACT), and the SCC × BACT interaction. The random effect of individual cow, nested within herd, DIM and parity was used as the error term for the latter effects. Both IMI (i.e., BACT) and SCC significantly reduced the proportion of β-CN and αS1-CN, ascribed to the increased activity of both milk endogenous and microbial proteases. Less evident alterations were found for whey proteins, except for LF, which being a glycoprotein with direct and undirect antimicrobial activity, increased both with IMI and SCC, suggesting its involvement in the modulation of both the innate and adaptive immune response. Finally, increasing SCC in the positive samples was associated with a more marked reduction of total caseins at T1, and αS1-CN at T2, suggesting a synergic effect of infection and inflammation, more evident at high SCC. In conclusion, our work helps clarify the behavior of protein fractions at quarter level in animals having subclinical IMI. The inflammation status driven by the increase in SCC, rather the infection, was associated with the most significant changes, suggesting that the activity of endogenous proteolytic enzymes related to the onset of inflammation might have a pivotal role in directing the alteration of the milk protein profile.
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Affiliation(s)
- V Bisutti
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - A Vanzin
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - S Pegolo
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy.
| | - A Toscano
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - M Gianesella
- Department of Animal Medicine, Productions and Health, University of Padua, 35020, Legnaro (PD), Italy
| | - E Sturaro
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - S Schiavon
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - L Gallo
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - F Tagliapietra
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - D Giannuzzi
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
| | - A Cecchinato
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020, Legnaro (PD), Italy
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3
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Yan R, Ji Z, Fan J, Li J, Ren Y. Evaluation of the Efficacy of a Lactobacilli-Based Teat Detergents for the Microbiota of Cows Teats Using an Untargeted Metabolomics Approach. J Microbiol Biotechnol 2024; 34:103-115. [PMID: 37957117 PMCID: PMC10840472 DOI: 10.4014/jmb.2305.05016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/26/2023] [Accepted: 09/08/2023] [Indexed: 11/15/2023]
Abstract
Teat cleaning pre- and post-milking is important for the overall health and hygiene of dairy cows. The purpose of this research was to evaluate the effectiveness of a teat detergents based on lactic acid bacteria according to changes in somatic cell count and cow-milk metabolites. Sixty-nine raw milk samples were collected from 11 Holstein-Friesian cows in China during 12 days of teat cleaning. An ultra-performance liquid chromatography-quadrupole-time of flight mass spectrometry-based untargeted metabolomic approach was applied to detect metabolomic differences after treatment with lactic acid bacteria and chemical teat detergents in cows with subclinical mastitis. The results suggest that the lactobacilli-based teat detergents could reduce somatic cell count and improve microhabitat of cow teat apex by adjusting the composition of metabolites. Furthermore, the somatic cell count could be decreased significantly within 10 days following the cleaning protocol. Lactic acid bacteria have the potential to be applied as a substitution to teat chemical detergents before and after milking for maintenance of healthy teats and breasts. Further, larger scale validation work is required to support the findings of the current study.
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Affiliation(s)
- Rui Yan
- Inner Mongolia Key Laboratory for Biomass-Energy Conversion, Inner Mongolia University of Science and Technology, Baotou 014010, P.R. China
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, P.R. China
| | - Zhongqing Ji
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, P.R. China
| | - Jiaqi Fan
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, P.R. China
| | - Jiang Li
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, P.R. China
| | - Yan Ren
- Inner Mongolia Key Laboratory for Biomass-Energy Conversion, Inner Mongolia University of Science and Technology, Baotou 014010, P.R. China
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, 014010, P.R. China
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4
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Vanzin A, Franchin C, Arrigoni G, Battisti I, Masi A, Squartini A, Bisutti V, Giannuzzi D, Gallo L, Cecchinato A, Pegolo S. Subclinical Mastitis from Streptococcus agalactiae and Prototheca spp. Induces Changes in Milk Peptidome in Holstein Cattle. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:16827-16839. [PMID: 37890871 PMCID: PMC10636762 DOI: 10.1021/acs.jafc.3c03065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 10/29/2023]
Abstract
Early detection of bovine subclinical mastitis may improve treatment strategies and reduce the use of antibiotics. Herein, individual milk samples from Holstein cows affected by subclinical mastitis induced by S. agalactiae and Prototheca spp. were analyzed by untargeted and targeted mass spectrometry approaches to assess changes in their peptidome profiles and identify new potential biomarkers of the pathological condition. Results showed a higher amount of peptides in milk positive on the bacteriological examination when compared with the negative control. However, the different pathogens seemed not to trigger specific effects on the milk peptidome. The peptides that best distinguish positive from negative samples are mainly derived from the most abundant milk proteins, especially from β- and αs1-casein, but also include the antimicrobial peptide casecidin 17. These results provide new insights into the physiopathology of mastitis. Upon further validation, the panel of potential discriminant peptides could help the development of new diagnostic and therapeutic tools.
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Affiliation(s)
- Alice Vanzin
- Department
of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, viale dell’Università 16, Legnaro
(PD) 35020, Italy
| | - Cinzia Franchin
- Department
of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, viale dell’Università 16, Legnaro
(PD) 35020, Italy
| | - Giorgio Arrigoni
- Department
of Biomedical Sciences, University of Padova, via U. Bassi 58/B, Padova 35131, Italy
| | - Ilaria Battisti
- Department
of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, viale dell’Università 16, Legnaro
(PD) 35020, Italy
| | - Antonio Masi
- Department
of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, viale dell’Università 16, Legnaro
(PD) 35020, Italy
| | - Andrea Squartini
- Department
of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, viale dell’Università 16, Legnaro
(PD) 35020, Italy
| | - Vittoria Bisutti
- Department
of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, viale dell’Università 16, Legnaro
(PD) 35020, Italy
| | - Diana Giannuzzi
- Department
of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, viale dell’Università 16, Legnaro
(PD) 35020, Italy
| | - Luigi Gallo
- Department
of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, viale dell’Università 16, Legnaro
(PD) 35020, Italy
| | - Alessio Cecchinato
- Department
of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, viale dell’Università 16, Legnaro
(PD) 35020, Italy
| | - Sara Pegolo
- Department
of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, viale dell’Università 16, Legnaro
(PD) 35020, Italy
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5
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Zhang S, Li H, Hu Q, Wang Z, Chen X. Discrimination of thermal treated bovine milk using MALDI-TOF MS coupled with machine learning. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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6
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Sunds AV, Sundekilde UK, Poulsen NA, Larsen LB. Association between udder inflammation and glycosidase activities and free sugar levels in bovine milk. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2021.105093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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7
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Wang Y, Chen T, Gan Z, Li H, Li Y, Zhang Y, Zhao X. Metabolomic analysis of untargeted bovine uterine secretions in dairy cows with endometritis using ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry. Res Vet Sci 2021; 139:51-58. [PMID: 34252702 DOI: 10.1016/j.rvsc.2021.07.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/26/2021] [Accepted: 07/01/2021] [Indexed: 10/20/2022]
Abstract
Endometritis is among the most common bovine uterine diseases; as a cause of infertility, it affects the progress of the cattle industry. In this study, we used a novel technique based on ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry for comparative metabolomics of uterine secretions in healthy cows and cows with endometritis, classified based on clinical symptoms. Univariate and multivariate statistical analyses revealed significant differences between the two groups (n = 12). Compared with healthy uterine secretion samples, in the clinical endometritis samples, coumaric acid, benzoic acid, and equol were downregulated. However, l-phenylalanine, glutamine, succinic acid, linoleate, arachidonic acid, and other metabolites were upregulated, revealing variations between healthy cows and cows with endometritis (p < 0.05). This metabolomic approach may provide an in-depth understanding of endometritis pathobiology, along with a theoretical framework for the diagnosis and treatment of this bovine disease.
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Affiliation(s)
- Yuanyuan Wang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Tingting Chen
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Ze Gan
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
| | - Haijiang Li
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Yina Li
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Yong Zhang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
| | - Xingxu Zhao
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China.
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8
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Comparison of Quality Changes in Eurasian Perch ( Perca fluviatilis L.) Fillets Originated from Two Different Rearing Systems during Frozen and Refrigerated Storage. Foods 2021; 10:foods10061405. [PMID: 34204538 PMCID: PMC8233806 DOI: 10.3390/foods10061405] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 06/10/2021] [Accepted: 06/10/2021] [Indexed: 01/23/2023] Open
Abstract
The current knowledge on how different Eurasian perch rearing systems impact the final fillet quality is scant. Therefore, two domestic storage conditions were investigated-10 months frozen (-20 °C) and 12 days refrigerated (+4 °C) storage conditions-in order to determine (i) how the choice of rearing system affects fillets quality during different processing conditions and (ii) if oxidative changes and other quality parameters were interactive. For the proposed idea, proteome analysis, oxidative changes, and some quality parameters were considered in this study. Sodium dodecyl-sulfate polyacrylamide gel electrophoresis (SDS-PAGE) indicated a higher loss of protein in the frozen fillets from ponds (PF) than the fillets from recirculating aquaculture systems (RAS) (RF). Western blot showed a higher protein carbonyls level in RF compared to PF, which was confirmed by the total protein carbonyls during frozen storage. PF indicated less liquid loss, hardness, and oxidation progress than RF in both storage conditions. The biogenic amines index (BAI) in the fillets from either origin showed acceptable levels during storage at +4 °C. Furthermore, the n-3/n-6 ratio was similar for both fillets. The deterioration of fillets during frozen storage was mainly caused by formation of ice crystals followed by protein oxidation, while protein oxidation was the main concern during refrigerated storage confirmed by principal component analysis (PCA) analysis.
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9
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Verhegghe M, De Block J, Heyndrickx M, Van Coillie E, Van Poucke C, Duquenne B. Application of LC‐HRMS identified marker peptides in an LC‐MS/MS method for detection and quantification of heat‐resistant proteolytic activity in raw milk. INT J DAIRY TECHNOL 2020. [DOI: 10.1111/1471-0307.12754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Marijke Verhegghe
- Technology and Food Science Unit Flanders Research Institute for Agriculture, Fisheries and Food (ILVO) Brusselsesteenweg 370 Melle9090Belgium
| | - Jan De Block
- Technology and Food Science Unit Flanders Research Institute for Agriculture, Fisheries and Food (ILVO) Brusselsesteenweg 370 Melle9090Belgium
| | - Marc Heyndrickx
- Technology and Food Science Unit Flanders Research Institute for Agriculture, Fisheries and Food (ILVO) Brusselsesteenweg 370 Melle9090Belgium
- Department of Pathology, Bacteriology and Avian Diseases Faculty of Veterinary Medicine Ghent University Salisburylaan 133 Merelbeke9820Belgium
| | - Els Van Coillie
- Technology and Food Science Unit Flanders Research Institute for Agriculture, Fisheries and Food (ILVO) Brusselsesteenweg 370 Melle9090Belgium
| | - Christof Van Poucke
- Technology and Food Science Unit Flanders Research Institute for Agriculture, Fisheries and Food (ILVO) Brusselsesteenweg 370 Melle9090Belgium
| | - Barbara Duquenne
- Technology and Food Science Unit Flanders Research Institute for Agriculture, Fisheries and Food (ILVO) Brusselsesteenweg 370 Melle9090Belgium
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10
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Dalabasmaz S, Dittrich D, Kellner I, Drewello T, Pischetsrieder M. Identification of peptides reflecting the storage of UHT milk by MALDI-TOF-MS peptide profiling. J Proteomics 2019; 207:103444. [PMID: 31323422 DOI: 10.1016/j.jprot.2019.103444] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 05/16/2019] [Accepted: 07/11/2019] [Indexed: 10/26/2022]
Abstract
Proteolysis during the storage of UHT milk is associated with major technological problems, particularly bitter off-flavors and age gelation limiting the shelf life of milk. In this study, untargeted peptide profiling by MALDI-TOF-MS identified peptides that were formed by proteolysis and reflected the storage of UHT milk. Analysis of nine different commercial UHT samples recorded peptide profiles during and at the end of their shelf life. Relative quantification and sequencing of the peptides revealed that the concentrations of 22 peptides increased significantly during the storage of UHT milk due to the activity of endogenous milk proteases and microbial proteases as well as other unidentified proteolytic mechanisms. Based on highly discriminative AUC values from receiver operator characteristic (ROC) curve analysis, we selected ten peptides as marker candidates. Among those, the peptide β-casein192-206 (m/z 1668.9) was the most suitable marker differentiating expired-UHT from regular-UHT samples with 100% accuracy. Additionally, β-casein191-206 (m/z 1782.0) showed 100% specificity and β-casein139-161 (m/z 2696.4) 100% sensitivity. Thus, β-casein192-206, either by itself or in combination with β-casein191-206 and β-casein139-161, presents a reliable marker to monitor the storage of UHT milk based on proteolytic mechanisms. SIGNIFICANCE: Enzymatic hydrolysis is the main reason why processed milk spoils during storage. The present study recorded peptide profiles to monitor the release or degradation of peptides in stored UHT milk. Among the detected peptides, statistical analysis revealed that the relative concentration of β-casein192-206 reflected those proteolytic processes most precisely. Food authorities can now refer to β-casein192-206 as a reliable marker to differentiate between freshly processed milk and products at the end of their shelf life. Furthermore, the food industry can use this marker peptide to improve production processes by monitoring the proteolysis during storage. The recorded peptide profile helps to explain the basic mechanisms leading to storage-induced proteolysis.
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Affiliation(s)
- Sevim Dalabasmaz
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
| | - Daniel Dittrich
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
| | - Ina Kellner
- Physical Chemistry I, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058 Erlangen, Germany
| | - Thomas Drewello
- Physical Chemistry I, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058 Erlangen, Germany
| | - Monika Pischetsrieder
- Food Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany.
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11
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Katsafadou AI, Tsangaris GT, Anagnostopoulos AK, Billinis C, Barbagianni MS, Vasileiou NGC, Spanos SA, Mavrogianni VS, Fthenakis GC. Differential quantitative proteomics study of experimental Mannheimia haemolytica mastitis in sheep. J Proteomics 2019; 205:103393. [PMID: 31154024 DOI: 10.1016/j.jprot.2019.103393] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 05/12/2019] [Accepted: 05/14/2019] [Indexed: 02/08/2023]
Abstract
Objective was the differential quantitative proteomics study of ovine mastitis induced by Mannheimia haemolytica; clinical, microbiological, cytological and histopathological methods were employed for confirmation and monitoring. Proteins were separated by two-dimensional gel electrophoresis (2-DE) for all samples and differentially abundant proteins were identified by mass spectrometry; comparisons were performed with pre- (blood, milk) and post- (milk of contralateral gland) inoculation findings. Animals developed mastitis, confirmed by isolation of challenge strain and increase of neutrophils in milk and by histopathological evidence. In blood plasma, 33 differentially abundant proteins (compared to findings before challenge) were identified: 6 with decrease, 13 with new appearance and 14 with varying abundance. In a post-challenge milk whey protein reference map, 65 proteins were identified; actin cytoplasmic-1, beta-lactoglobulin-1/B, cathelicidin-1 predominated. Further, 89 differentially abundant proteins (compared to findings before challenge) were identified: 18 with decrease, 53 with new appearance, 3 with increase and 15 with varying abundance; 15 proteins showed status changes in blood plasma and milk whey. Differential abundance from inoculated and contralateral glands revealed 74 proteins only from the inoculated gland. Most differentially abundant proteins in milk whey were involved in cell organisation and biogenesis (n = 17) or in inflammatory and defence response (n = 13). SIGNIFICANCE: The proteomes of blood and milk from ewes with experimental mastitis caused by Mannheimia haemolytica and the differential proteomics in sequential samples after challenge are presented for the first time. This is the first detailed proteomics study in M. haemolytica-associated mastitis in ewes. An experimental model fully simulating natural mastitis has been used. Use of experimentally induced mastitis minimised potential variations and allowed consistency of results. The study included evaluation of changes in blood plasma and milk whey. Protein patterns have been studied, indicating with great accuracy changes that had occurred as part of the disease process and development, during the acute phase of infection. Relevant protein-protein interactions were studied. The entirety of proteomics findings has suggested that affected ewes had mounted a defence response that had been regulated by many proteins (e.g., cathelicidins, haptoglobin, serum amyloid A) and through various pathways (e.g., acute phase response, binding and transporting significant ions and molecules); these were interdependent at various points. Potential biomarkers have been indicated for use in diagnostic assays of mastitis.
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Affiliation(s)
- Angeliki I Katsafadou
- Veterinary Faculty, University of Thessaly, 43100 Karditsa, Greece; Proteomics Research Unit, Biomedical Research Foundation of Academy of Athens, 11527 Athens, Greece
| | - George Th Tsangaris
- Proteomics Research Unit, Biomedical Research Foundation of Academy of Athens, 11527 Athens, Greece
| | | | | | | | | | - Stavros A Spanos
- Veterinary Faculty, University of Thessaly, 43100 Karditsa, Greece
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12
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Dalabasmaz S, Pischetsrieder M. Design of a Prediction Model for the Differentiation of Pasteurized Milk from Heated ESL Milk by Peptide Profiling. Proteomics 2019; 19:e1800292. [DOI: 10.1002/pmic.201800292] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 02/12/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Sevim Dalabasmaz
- Friedrich Emil Fischer CenterFood ChemistryDepartment of Chemistry and PharmacyAlexander UniversitätErlangen‐Nürnberg 91058 Erlangen Germany
| | - Monika Pischetsrieder
- Friedrich Emil Fischer CenterFood ChemistryDepartment of Chemistry and PharmacyAlexander UniversitätErlangen‐Nürnberg 91058 Erlangen Germany
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13
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Dalabasmaz S, Ebner J, Pischetsrieder M. Identification of the Peptide PyroQ-βCasein 194-209 as a Highly Specific and Sensitive Marker to Differentiate between Ultrahigh-Temperature Processed (UHT) Milk and Mildly Heated Milk. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:10781-10791. [PMID: 29148742 DOI: 10.1021/acs.jafc.7b03801] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, a new approach was introduced to identify marker peptides that reflect the thermal treatment of commercial milk samples and differentiate ultrahigh-temperature processed (UHT) milk from mildly heated milk. Peptide profiles of training set samples, pasteurized (n = 20), extended shelf life (n = 29), and UHT (n = 29) milk, were recorded by MALDI-TOF-MS after StageTip microextraction. As marker candidates, 13 peptides were selected, and their cutoff levels were defined. The quality of the cutoff levels was then tested with a blind test set. Thus, the peptide m/z 1701.0, which was identified as pyroQ-βcasein194-209, could ideally differentiate UHT milk from mildly heated milk with an accuracy of 100%. Due to its high reliability and sensitivity, this peptide may be applied in routine analysis to monitor thermal processing of milk. An additional heating experiment showed that the marker peptide candidates are formed during milk processing by endogenous enzymes and selective thermal cleavage.
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Affiliation(s)
- Sevim Dalabasmaz
- Food Chemistry Unit, Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) , Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
| | - Jennifer Ebner
- Food Chemistry Unit, Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) , Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
| | - Monika Pischetsrieder
- Food Chemistry Unit, Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) , Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
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Xi X, Kwok LY, Wang Y, Ma C, Mi Z, Zhang H. Ultra-performance liquid chromatography-quadrupole-time of flight mass spectrometry MS E-based untargeted milk metabolomics in dairy cows with subclinical or clinical mastitis. J Dairy Sci 2017; 100:4884-4896. [PMID: 28342601 DOI: 10.3168/jds.2016-11939] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 12/16/2016] [Indexed: 12/14/2022]
Abstract
In this study, a novel metabolomics technique based on ultra-performance liquid chromatography-quadrupole-time of flight mass spectrometry in the MSE mode was used to investigate the milk metabolomics of healthy, subclinical, and clinical mastitis cows, which were classified based on somatic cell count and presentation of clinical symptoms. Meanwhile, univariate and multivariate statistical analyses were performed to identify the significant differences across the 3 groups. Compared with healthy milk samples, less glucose, d-glycerol-1-phosphate, 4-hydroxyphenyllactate, l-carnitine, sn-glycero-3-phosphocholine, citrate, and hippurate were detected in the clinical mastitic milk samples, whereas less d-glycerol-1-phosphate, benzoic acid, l-carnitine, and cis-aconitate were found in the subclinical mastitic milk samples. Meanwhile, the milk concentration of arginine and Leu-Leu increased in both the clinical and subclinical mastitis groups. Besides, less 4-hydroxyphenyllactate, cis-aconitate, lactose, and oxoglutarate were detected in the clinical than the subclinical mastitic milk samples, whereas the abundance of some oligopeptides (Leu-Ala, Phe-Pro-Ile, Asn-Arg-Ala-Ile, and Val-Phe-Val-Tyr) increased by over 7.95-fold. Our results suggest that significant variations exist across healthy and mastitis cows. The current metabolomics approach will help in better understanding the pathobiology of mastitis, although clinical validation will be required before field application.
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Affiliation(s)
- Xiaomin Xi
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, 010018, P. R. China
| | - Lai-Yu Kwok
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, 010018, P. R. China
| | - Yuenan Wang
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, 010018, P. R. China
| | - Chen Ma
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, 010018, P. R. China
| | - Zhihui Mi
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, 010018, P. R. China
| | - Heping Zhang
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, 010018, P. R. China.
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Ebner J, Baum F, Pischetsrieder M. Identification of sixteen peptides reflecting heat and/or storage induced processes by profiling of commercial milk samples. J Proteomics 2016; 147:66-75. [PMID: 27016039 DOI: 10.1016/j.jprot.2016.03.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/25/2016] [Accepted: 03/10/2016] [Indexed: 10/22/2022]
Abstract
UNLABELLED Peptide profiles of different drinking milk samples were examined to study how the peptide fingerprint of milk reflects processing conditions. The combination of a simple and fast method for peptide extraction using stage tips and MALDI-TOF-MS enabled the fast and easy generation and relative quantification of peptide fingerprints for high-temperature short-time (HTST), extended shelf life (ESL) and ultra-high temperature (UHT) milk of the same dairies. The relative quantity of 16 peptides changed as a function of increasing heat load. Additional heating experiments showed that among those, the intensity of peptide β-casein 196-209 (m/z 1460.9Da) was most heavily influenced by heat treatment indicating a putative marker peptide for milk processing conditions. Storage experiments with HTST- and UHT milk revealed that the differences between different types of milk samples were not only caused by the heating process. Relevant was also the proteolytic activity of enzymes during storage, which were differently influenced by the heat treatment. These results indicate that the peptide profile may be suitable to monitor processing as well as storage conditions of milk. SIGNIFICANCE In the present study, peptide profiling of different types of milk was carried out by MALDI-TOF-MS after stage-tip extraction and relative quantification using an internal reference peptide. Although MALDI-TOF-MS covers only part of the peptidome, the method is easy and quick and is, therefore, suited for routine analysis to address several aspects of food authenticity. Using this method, 16 native peptides were detected in milk that could be modulated by different industrial processes. Subsequent heating and storage experiments with pasteurized and UHT milk confirmed that these peptides are indeed related to the production or storage conditions of the respective products. Furthermore, the heating experiments revealed one peptide, namely the β-casein-derived sequence β-casein 196-209, which underwent particularly sensitive modulation by heat treatment. The present results indicate that the modulated peptides, and especially β-casein 196-209, may be suitable markers to monitor processing parameters for industrial milk production. Furthermore, the model experiments suggest mechanisms leading to the formation or degradation of peptides, which help to evaluate putative marker peptides.
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Affiliation(s)
- Jennifer Ebner
- Food Chemistry Unit, Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Schuhstr. 19, 91052 Erlangen, Germany
| | - Florian Baum
- Food Chemistry Unit, Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Schuhstr. 19, 91052 Erlangen, Germany
| | - Monika Pischetsrieder
- Food Chemistry Unit, Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Schuhstr. 19, 91052 Erlangen, Germany.
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Jansson T, Jensen HB, Sundekilde UK, Clausen MR, Eggers N, Larsen LB, Ray C, Andersen HJ, Bertram HC. Chemical and proteolysis-derived changes during long-term storage of lactose-hydrolyzed ultrahigh-temperature (UHT) milk. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:11270-11278. [PMID: 25356780 DOI: 10.1021/jf504104q] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Proteolytic activity in milk may release bitter-tasting peptides and generate free amino terminals that react with carbohydrates, which initiate Maillard reaction. Ultrahigh temperature (UHT) heat treatment inactivates the majority of proteolytic enzymes in milk. In lactose-hydrolyzed milk a β-galactosidase preparation is applied to the milk after heat treatment, which has proteolytic side activities that may induce quality deterioration of long-term-stored milk. In the present study proteolysis, glycation, and volatile compound formation were investigated in conventional (100% lactose), filtered (60% lactose), and lactose-hydrolyzed (<1% lactose) UHT milk using reverse phase high-pressure liquid chromatography-mass spectrometry, proton nuclear magnetic resonance, and gas chromatography-mass spectrometry. Proteolysis was observed in all milk types. However, the degree of proteolysis was significantly higher in the lactose-hydrolyzed milk compared to the conventional and filtered milk. The proteins most prone to proteolysis were β-CN and αs1-CN, which were clearly hydrolyzed after approximately 90 days of storage in the lactose-hydrolyzed milk.
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Affiliation(s)
- Therese Jansson
- Department of Food Science, Aarhus University , Kirstinebjergvej 10, DK-5792 Aarslev, Denmark
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Cattaneo S, Stuknytė M, Pellegrino L, De Noni I. Targeted peptides for the quantitative evaluation of casein plasminolysis in drinking milk. Food Chem 2014; 155:179-85. [DOI: 10.1016/j.foodchem.2014.01.053] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 12/09/2013] [Accepted: 01/18/2014] [Indexed: 10/25/2022]
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Christensen B, Sørensen E. Osteopontin is highly susceptible to cleavage in bovine milk and the proteolytic fragments bind the αVβ3-integrin receptor. J Dairy Sci 2014; 97:136-46. [DOI: 10.3168/jds.2013-7223] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 10/06/2013] [Indexed: 11/19/2022]
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Baum F, Fedorova M, Ebner J, Hoffmann R, Pischetsrieder M. Analysis of the Endogenous Peptide Profile of Milk: Identification of 248 Mainly Casein-Derived Peptides. J Proteome Res 2013; 12:5447-62. [DOI: 10.1021/pr4003273] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Florian Baum
- Department
of Chemistry and Pharmacy, Food Chemistry, Emil Fischer Center, University of Erlangen-Nuremberg, Schuhstrasse 19, 91052 Erlangen, Germany
| | - Maria Fedorova
- Center
for Biotechnology and Biomedicine, Universität Leipzig, Deutscher Platz
5, 04103 Leipzig, Germany
| | - Jennifer Ebner
- Department
of Chemistry and Pharmacy, Food Chemistry, Emil Fischer Center, University of Erlangen-Nuremberg, Schuhstrasse 19, 91052 Erlangen, Germany
| | - Ralf Hoffmann
- Center
for Biotechnology and Biomedicine, Universität Leipzig, Deutscher Platz
5, 04103 Leipzig, Germany
| | - Monika Pischetsrieder
- Department
of Chemistry and Pharmacy, Food Chemistry, Emil Fischer Center, University of Erlangen-Nuremberg, Schuhstrasse 19, 91052 Erlangen, Germany
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Effects of duodenal infusion of free α-linolenic acid on the plasma and milk proteome of lactating dairy cows. Animal 2012; 7:293-9. [PMID: 23031206 DOI: 10.1017/s175173111200153x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
This study is an exploratory analysis for understanding the effect of a duodenal infusion of an α-linolenic acid (LNA) on the plasma and milk proteome of lactating dairy cows. Four primiparous Holstein cows were fitted with duodenal cannulas and received 0, 100, 200, 300 and 400 g/day of LNA in a two-treatment crossover design. Blood and milk were collected for determination of protein composition by two-dimensional gel electrophoresis. Alteration of protein spots was detected and identified using matrix-assisted laser desorption/ionization time-of-flight/time-of-flight tandem mass spectrometry (MALDI-TOF-TOF MS). Plasma haptoglobin levels, and milk β-casein A2, αs1-casein variant and albumin, did not differ in cows after infusion of 0, 100, 200 and 300 g/day of LNA, but were increased after the cows received duodenal infusion of 400 g/day of LNA. Western blot analysis of haptoglobin expression in plasma confirmed the alterations in protein expression seen using MS. This study demonstrated that infusion of high doses of LNA by duodenal cannula can result in metabolic stress within the bovine intestine and in changes in milk composition.
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Hinz K, Larsen L, Wellnitz O, Bruckmaier R, Kelly A. Proteolytic and proteomic changes in milk at quarter level following infusion with Escherichia coli lipopolysaccharide. J Dairy Sci 2012; 95:1655-66. [DOI: 10.3168/jds.2011-4813] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Accepted: 12/05/2011] [Indexed: 01/09/2023]
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Le Maréchal C, Thiéry R, Vautor E, Le Loir Y. Mastitis impact on technological properties of milk and quality of milk products—a review. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s13594-011-0009-6] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Larsen L, Hinz K, Jørgensen A, Møller H, Wellnitz O, Bruckmaier R, Kelly A. Proteomic and peptidomic study of proteolysis in quarter milk after infusion with lipoteichoic acid from Staphylococcus aureus. J Dairy Sci 2010; 93:5613-26. [DOI: 10.3168/jds.2010-3409] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2010] [Accepted: 08/10/2010] [Indexed: 11/19/2022]
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Kamau SM, Lu RR, Chen W, Liu XM, Tian FW, Shen Y, Gao T. Functional Significance of Bioactive Peptides Derived from Milk Proteins. FOOD REVIEWS INTERNATIONAL 2010. [DOI: 10.1080/87559129.2010.496025] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
Our previous studies demonstrated prompt elevation of proteinase activity in mammary secretion of drying-off cows and goats. The current study examined the progressive changes in composition of cow mammary secretion following drying-off and, in parallel, characterized the mode of peptide neogenesis using matrix-assisted laser desorption ionization-time-of-flight mass spectrometry (MALDI-TOF MS) and liquid chromatography-electrospray-ionization (LC-ESI) MS/MS. The results show that the percentage of casein of total milk protein at time of drying-off was 76%, which dropped to 41%, 24%, and 16%, respectively, 1, 2, and 3 weeks after drying-off. Levels of β-lactoglobulin and α-lactoalbumin in mammary secretions of drying-off cows decreased prominently while levels of lactoferrin, BSA, and casein derived-proteins increased concomitantly compared with regular milk. A fractionation procedure was applied to remove molecules larger than 10 kDa before MALDI-TOF MS and LC-ESI MS/MS and the results show that the MALDI-TOF MS peptide profile of mammary secretion ranging from m/z 600 to 4000 was apparently modified after drying-off for 1 week, whereas species 1590 m/z and 2460 m/z were most obviously enriched compared with regular milk. LC-ESI MS/MS results were used to map peptide sequence with Mascot search server and under no post translational modification to reduce database size and 202 novel β-casein-derived peptides were successfully identified in mammary secretion after drying-off for 1 week in contrast to regular milk. Accordingly at least 48 additional cleavage positions were assigned on β-casein for mammary secretion. Among the 202 novel peptides, 5 are homologous with confirmed opioid agonists, angiotensin 1-converting enzyme inhibitors, or immuno-modulators. In conclusion, peptides are released in situ from milk proteins within short intervals following drying-off in cows. They might play roles in the transition of mammary glands from lactating to non-lactating. With specified post-translational modifications and focused functional screening, novel peptides are yet to be discovered in dry cow mammary secretion.
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Kannan A, Hettiarachchy NS, Lay JO, Liyanage R. Human cancer cell proliferation inhibition by a pentapeptide isolated and characterized from rice bran. Peptides 2010; 31:1629-34. [PMID: 20594954 DOI: 10.1016/j.peptides.2010.05.018] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2010] [Revised: 05/21/2010] [Accepted: 05/24/2010] [Indexed: 10/19/2022]
Abstract
Food-derived bioactive peptides promote functional activity against diseases and present as nutraceutical agents. The purpose of our research was to isolate and fully characterize peptide(s) derived from rice bran having anti-cancer properties. Gastrointestinal juices resistant peptide fractions were initially generated from heat stabilized de-fatted rice bran from which <5 kDa fraction was shown to inhibit proliferation of cancer cells. Based on these published findings the <5 kDa peptide fraction was selected for further characterization to obtain single pure peptide(s) with enhanced anti-cancer properties. Purification and characterization from the fraction was done employing chromatography and mass spectrometric techniques. Cancer cell viability was measured using a cell titer assay that uses a tetrazolium dye [3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt; (MTS)] and the electron coupling reagent, phenazine methosulfate. Ion-exchange chromatography elutes that showed anti-cancer properties were further purified to liberate pure peptide. The pure peptide at 600-700 microg/mL dose caused 84% inhibition to colon cancer cells (Caco-2, HCT-116) growth, 80% to breast cancer cells (MCF-7, MDA-MB-231) growth and 84% to liver cancer cells (HepG-2) growth. Mass spectrometry analysis and de novo sequencing revealed the sequence of Glu-Gln-Arg-Pro-Arg for the peptide with a molecular mass of 685.378 Da. A novel pentapeptide was isolated from rice bran to possess cancer growth inhibitory properties on colon, breast, lung and liver cancer cells. This peptide could serve as a nutraceutical agent against cancer.
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Affiliation(s)
- Arvind Kannan
- Department of Food Science, University of Arkansas, 2650 N Young ave, Fayetteville, AR 72703, USA
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Gagnaire V, Jardin J, Jan G, Lortal S. Invited review: Proteomics of milk and bacteria used in fermented dairy products: From qualitative to quantitative advances. J Dairy Sci 2009; 92:811-25. [DOI: 10.3168/jds.2008-1476] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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