1
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Morin CR, Baeva ME, Hollenberg MD, Brain MC. Milk and multiple sclerosis: A possible link? Mult Scler Relat Disord 2024; 83:105477. [PMID: 38308914 DOI: 10.1016/j.msard.2024.105477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 01/07/2024] [Accepted: 01/26/2024] [Indexed: 02/05/2024]
Abstract
Despite having been formally defined over 150 years ago, the etiology of multiple sclerosis (MS) is still relatively unknown. However, it is now recognized as a multifactorial disease in which genetics, infection, immune function, and environment play a role. We propose an additional piece to the puzzle: milk. In this review, milk is highlighted as a potential risk factor for MS. We examine the overall correlation between bovine milk consumption and the incidence of MS. We then discuss possible mechanisms that may explain the positive association between milk consumption and the development of MS. For instance, butyrophilin (BTN), a milk glycoprotein, can provide molecular mimicry of myelin oligodendrocyte glycoprotein and induce an autoinflammatory response against myelin. Other milk components such as casein, gangliosides, xanthine oxidase, and saturated fats are also analyzed for their potential involvement in the pathophysiology of MS. Finally, we fit milk alongside other well known risk factors of MS: vitamin D levels, Epstein Barr virus infection, and gut dysbiosis. In conclusion, this review summarizes potential mechanisms linking milk as an underappreciated potential risk factor for the development of MS.
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Affiliation(s)
- Caleb R Morin
- University of Calgary Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
| | | | - Morley D Hollenberg
- Department of Physiology & Pharmacology, University of Calgary Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
| | - Michael C Brain
- Department of Biochemistry and Molecular Biology, University of Calgary Cumming School of Medicine, Calgary, AB T2N 4N1, Canada
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2
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Zhao H, Li M, Zhu Q, Liu A, Bi J, Quan Z, Luo X, Zheng Y, Yang N, Yue X, Cao X. Label-free quantitative proteomic analysis of milk fat globule membrane proteins in porcine colostrum and mature milk. Food Chem 2023; 426:136447. [PMID: 37301041 DOI: 10.1016/j.foodchem.2023.136447] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/09/2023] [Accepted: 05/21/2023] [Indexed: 06/12/2023]
Abstract
Milk fat globule membrane (MFGM) proteins are nutritional components with various biological functions. This study aimed to analyze and compare MFGM proteins in porcine colostrum (PC) and porcine mature milk (PM), via label-free quantitative proteomics. In total, 3917 and 3966 MFGM proteins were identified in PC and PM milk, respectively. A total of 3807 common MFGM proteins were found in both groups, including 303 significant differentially expressed MFGM proteins. Gene Ontology (GO) analysis revealed that the differentially expressed MFGM proteins were mainly related to the cellular process, cell, and binding. The dominant pathway of the differentially expressed MFGM proteins was related to the phagosome according to Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis. These results reveal crucial insights into the functional diversity of MFGM proteins in porcine milk during lactation and provide theoretical guidance for the development of MFGM proteins in the future.
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Affiliation(s)
- Huiwen Zhao
- College of Food Science, Shenyang Agricultural University, Shenyang 11086, China
| | - Mohan Li
- College of Food Science, Shenyang Agricultural University, Shenyang 11086, China
| | - Qing Zhu
- College of Food Science, Shenyang Agricultural University, Shenyang 11086, China
| | - Aicheng Liu
- College of Food Science, Shenyang Agricultural University, Shenyang 11086, China
| | - Jiayang Bi
- College of Food Science, Shenyang Agricultural University, Shenyang 11086, China
| | - Zhizhong Quan
- Liaoning Complete Biotechnology Co., Ltd., Tieling 112600, China
| | - Xue Luo
- College of Food Science, Shenyang Agricultural University, Shenyang 11086, China
| | - Yan Zheng
- College of Food Science, Shenyang Agricultural University, Shenyang 11086, China
| | - Ning Yang
- Liaoning Complete Biotechnology Co., Ltd., Tieling 112600, China
| | - Xiqing Yue
- College of Food Science, Shenyang Agricultural University, Shenyang 11086, China.
| | - Xueyan Cao
- College of Food Science, Shenyang Agricultural University, Shenyang 11086, China.
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3
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Balázs O, Dombi Á, Zsidó BZ, Hetényi C, Vida RG, Poór M. Probing the Interactions of 31 Mycotoxins with Xanthine Oxidase: Alternariol, Alternariol-3-Sulfate, and α-Zearalenol Are Allosteric Inhibitors of the Enzyme. Toxins (Basel) 2023; 15:250. [PMID: 37104188 PMCID: PMC10143053 DOI: 10.3390/toxins15040250] [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: 02/24/2023] [Revised: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 04/28/2023] Open
Abstract
Mycotoxins are frequent toxic contaminants in foods and beverages, causing a significant health threat. Interactions of mycotoxins with biotransformation enzymes (e.g., cytochrome P450 enzymes, sulfotransferases, and uridine 5'-diphospho-glucuronosyltransferases) may be important due to their possible detoxification or toxic activation during enzymatic processes. Furthermore, mycotoxin-induced enzyme inhibition may affect the biotransformation of other molecules. A recent study described the strong inhibitory effects of alternariol and alternariol-9-methylether on the xanthine oxidase (XO) enzyme. Therefore, we aimed to test the impacts of 31 mycotoxins (including the masked/modified derivatives of alternariol and alternariol-9-methylether) on XO-catalyzed uric acid formation. Besides the in vitro enzyme incubation assays, mycotoxin depletion experiments and modeling studies were performed. Among the mycotoxins tested, alternariol, alternariol-3-sulfate, and α-zearalenol showed moderate inhibitory actions on the enzyme, representing more than tenfold weaker impacts compared with the positive control inhibitor allopurinol. In mycotoxin depletion assays, XO did not affect the concentrations of alternariol, alternariol-3-sulfate, and α-zearalenol in the incubates; thus, these compounds are inhibitors but not substrates of the enzyme. Experimental data and modeling studies suggest the reversible, allosteric inhibition of XO by these three mycotoxins. Our results help the better understanding of the toxicokinetic interactions of mycotoxins.
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Affiliation(s)
- Orsolya Balázs
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624 Pécs, Hungary
- Department of Pharmaceutics and Central Clinical Pharmacy, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary
| | - Ágnes Dombi
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624 Pécs, Hungary
| | - Balázs Zoltán Zsidó
- Unit of Pharmacoinformatics, Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Szigeti út 12, H-7624 Pécs, Hungary
| | - Csaba Hetényi
- Unit of Pharmacoinformatics, Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Szigeti út 12, H-7624 Pécs, Hungary
| | - Róbert György Vida
- Department of Pharmaceutics and Central Clinical Pharmacy, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary
| | - Miklós Poór
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624 Pécs, Hungary
- Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary
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4
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Han B, Zhang L, Zhou P. Comparison of milk fat globule membrane protein profile among bovine, goat and camel milk based on label free proteomic techniques. Food Res Int 2022; 162:112097. [DOI: 10.1016/j.foodres.2022.112097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/22/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022]
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5
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Zhang J, Duley JA, Cowley DM, Shaw PN, Zhou P, Koorts P, Bansal N. The Results of Different Heating Temperatures on Activities of Bioactive Proteins in Human Milk. J Hum Lact 2022; 39:300-307. [PMID: 36176243 DOI: 10.1177/08903344221124870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND The most utilized pasteurization method in donor human milk banks is Holder pasteurization (heating 62.5 °C for 30 min). However, many bioactive proteins are heat sensitive and are inactivated. RESEARCH AIM To determine the results of a range of heating regimes on the activities of xanthine oxidase, lactoperoxidase and lysozyme, the concentrations of immunoglobulin A and lactoferrin, as well as bacterial inactivation. METHOD This prospective, cross-sectional, intervention study was designed to measure the influence of heating temperatures on bioactive components in donor human milk. Milk samples were processed at 40, 50, 55, 62.5, 75, 127 °C and the activities of the enzymes, and the concentration of immune proteins, were measured. RESULTS No bacterial colonies were detectable, using standard culture methods, after heating above 50 ºC. All proteins studied retained over 60% concentrations or activities when the pasteurization temperature was 50 ºC or lower, while their concentrations or activities were lost at higher temperatures. For lactoferrin, the residual concentration was above 80% when heating temperature was under 55 °C, while only 20% remained after Holder pasteurization. Both xanthine oxidase and lactoperoxidase had little residual activity when temperatures were above Holder pasteurization. Lysozyme retained a greater proportion of residual activity than other proteins, following heating at all temperatures. CONCLUSIONS The concentrations or activities of immune proteins and bioactive enzymes decreased when heated above 50 °C. The results of this study can be used to design temperature control guidance during alternative methods of pasteurization.
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Affiliation(s)
- Jie Zhang
- School of Agriculture and Food Science, The University of Queensland, Saint Lucia, QLD, Australia
| | - John A Duley
- School of Pharmacy, The University of Queensland, Saint Lucia, QLD, Australia
| | - David M Cowley
- Mater Research Institute, The University of Queensland, Saint Lucia, QLD, Australia
| | - Paul N Shaw
- School of Pharmacy, The University of Queensland, Saint Lucia, QLD, Australia
| | - Peng Zhou
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, PR China
| | - Pieter Koorts
- Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
| | - Nidhi Bansal
- School of Agriculture and Food Science, The University of Queensland, Saint Lucia, QLD, Australia.,School of Pharmacy, The University of Queensland, Saint Lucia, QLD, Australia
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6
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Goulart DB, Mellata M. Escherichia coli Mastitis in Dairy Cattle: Etiology, Diagnosis, and Treatment Challenges. Front Microbiol 2022; 13:928346. [PMID: 35875575 PMCID: PMC9301288 DOI: 10.3389/fmicb.2022.928346] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 06/13/2022] [Indexed: 11/13/2022] Open
Abstract
Bovine mastitis is an inflammation of the udder tissue parenchyma that causes pathological changes in the glandular tissue and abnormalities in milk leading to significant economic losses to the dairy industry across the world. Mammary pathogenic Escherichia (E.) coli (MPEC) is one of the main etiologic agents of acute clinical mastitis in dairy cattle. MPEC strains have virulence attributes to resist the host innate defenses and thrive in the mammary gland environment. The association between specific virulence factors of MPEC with the severity of mastitis in cattle is not fully understood. Furthermore, the indiscriminate use of antibiotics to treat mastitis has resulted in antimicrobial resistance to all major antibiotic classes in MPEC. A thorough understanding of MPEC’s pathogenesis and antimicrobial susceptibility pattern is required to develop better interventions to reduce mastitis incidence and prevalence in cattle and the environment. This review compiles important information on mastitis caused by MPEC (e.g., types of mastitis, host immune response, diagnosis, treatment, and control of the disease) as well as the current knowledge on MPEC virulence factors, antimicrobial resistance, and the dilemma of MPEC as a new pathotype. The information provided in this review is critical to identifying gaps in knowledge that will guide future studies to better design diagnostic, prevent, and develop therapeutic interventions for this significant dairy disease.
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Affiliation(s)
- Débora Brito Goulart
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, United States
- *Correspondence: Débora Brito Goulart,
| | - Melha Mellata
- Department of Food Science and Human Nutrition, Iowa State University, Ames, IA, United States
- Interdepartmental Microbiology Graduate Program, Iowa State University, Ames, IA, United States
- Melha Mellata,
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7
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Fantuz F, Ferraro S, Todini L, Spurio R, Fatica A, Marcantoni F, Salimei E. Distribution of selected trace elements in the major fractions of donkey milk. J Dairy Sci 2022; 105:6422-6430. [PMID: 35691748 DOI: 10.3168/jds.2022-21901] [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: 01/30/2022] [Accepted: 04/13/2022] [Indexed: 02/01/2023]
Abstract
The aim of this study was to evaluate the concentrations of Zn, Cu, Mn, Se, Mo, Co, Li, B, Ti, Cr, Rb, Sr, Cd, and Pb in donkey milk and their distribution in major milk fractions (i.e., fat, casein, whey proteins, and aqueous phase). Individual milk samples were provided by 16 clinically healthy lactating donkeys. Subsequent centrifugation, ultracentrifugation, and ultrafiltration were carried out to remove fat, casein, and whey proteins to obtain skim milk, a supernatant whey fraction, and the aqueous phase of milk, respectively. Concentrations of the elements were measured in whole milk and fractions by inductively coupled plasma-mass spectrometry, and the concentrations associated with fat, casein, and whey proteins were then calculated. The effect of removal of fat, casein, and whey proteins was determined by repeated-measures ANOVA. The fat fraction of donkey milk carried a small (∼4.5% to 13.5%) but significant proportion of Mo, Co, Ti, Cr, and Sr. The casein fraction in donkey milk carried almost all milk Zn, a majority of Cu and Mn, and most of Mo, Ti, and Sr. Relevant proportions, between 20% and 36%, of Se, Co, and Cr were also associated with caseins. The majority of Se, Co, Li, B, Cr, and Rb, and relevant proportions of Mn, Mo, Ti, and Sr were found in soluble form (ultracentrifuged samples) and distributed between whey proteins and the aqueous phase of milk (ultrafiltered samples). Whey proteins in donkey milk carried the majority of milk Se and Co. All Li and B was present in the aqueous phase of milk, which also contained most Rb and Cr, and 17% to 42% of Mn, Se, Mo, Co, Ti, and Sr.
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Affiliation(s)
- F Fantuz
- Scuola di Bioscienze e Medicina Veterinaria, Università degli Studi di Camerino, 62032 Camerino, Italy
| | - S Ferraro
- Scuola di Scienze e Tecnologie, Università degli Studi di Camerino, 62032 Camerino, Italy.
| | - L Todini
- Scuola di Bioscienze e Medicina Veterinaria, Università degli Studi di Camerino, 62032 Camerino, Italy
| | - R Spurio
- Scuola di Bioscienze e Medicina Veterinaria, Università degli Studi di Camerino, 62032 Camerino, Italy
| | - A Fatica
- Dipartimento di Agricoltura, Ambiente, Alimenti, Università degli Studi del Molise, 86100 Campobasso, Italy
| | - F Marcantoni
- Scuola di Scienze e Tecnologie, Università degli Studi di Camerino, 62032 Camerino, Italy
| | - E Salimei
- Dipartimento di Agricoltura, Ambiente, Alimenti, Università degli Studi del Molise, 86100 Campobasso, Italy
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8
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Blinov AV, Siddiqui SA, Blinova AA, Khramtsov AG, Oboturova NP, Nagdalian АА, Simonov AN, Ibrahim SA. Analysis of the dispersed composition of milk using photon correlation spectroscopy. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104414] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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9
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Glycoproteomic and Lipidomic Characterization of Industrially Produced Whey Protein Phospholipid Concentrate with Emphasis on Antimicrobial Xanthine Oxidase, Oxylipins and Small Milk Fat Globules. DAIRY 2022. [DOI: 10.3390/dairy3020022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This work investigates the composition of whey protein phospholipid concentrate (WPPC), an underutilized dairy stream, and reveals that it is a source of many bioactive compounds that can benefit the immune system and gut health. Our glycoproteomics approach uncovered that proteins derived from the milk fat globule membrane (MFGM) represent 23% of the total protein relative abundance and identified 85 N-glycans. Released sialic acid, an additional marker of glycosylation, ranged from 1.2 to 2% of the total weight. Xanthine oxidase, a glycosylated marker of MFG bioactivity, was found in high abundance and displayed higher antimicrobial activity than bovine milk, despite its similar fat and solids content. An average MFG diameter of 2.64 ± 0.01 µm was found in liquid WPPC, compared to 4.78 ± 0.13 µm in bovine milk, which likely explains the unusually high presence of glycosylated membrane-bound proteins and phospholipids, whose total fatty acids accounted for 20% of the WPPC total fatty acid pool. Free and bound oxylipins (mainly derived from linoleic acid) were also identified, together with other less abundant anti-inflammatory lipid mediators derived from eicosapentaenoic acid and docosahexaenoic acid. Our study demonstrates that WPPC represents a promising starting material for bioactive compound extraction and a functional vehicle for the delivery of small MFGs.
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10
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Han B, Zhang L, Luo B, Ni Y, Bansal N, Zhou P. Comparison of milk fat globule membrane and whey proteome between Dromedary and Bactrian camel. Food Chem 2021; 367:130658. [PMID: 34343808 DOI: 10.1016/j.foodchem.2021.130658] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 06/22/2021] [Accepted: 07/19/2021] [Indexed: 12/20/2022]
Abstract
Camel milk is rich in nutrients and its impact on human medicine and nutrition cannot be ignored. We conducted an in-depth analysis of milk proteins obtained from two camel breed (Camelus bactrianus, CB and Camelus dromedarius, CD). Label-free proteomic technology was performed to analysis the MFGM and whey proteomes of CB and CD milk. In total, 1133 MFGM proteins and 627 whey proteins were identified from camel milk. Results revealed that 216 MFGM proteins and 109 whey proteins were significantly different between them. In addition, the cellular process, cell and binding were the predominately GO annotations of milk proteins. KEGG analysis shown that most proteins were involved in metabolic pathways. Furthermore, many proteins were found to be involved in PI3K/AKT signaling pathway, which could be the possible reason for hypoglycemic effect of camel milk. These results could provide a further understanding for unique biological characteristics of camel milk proteins.
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Affiliation(s)
- Binsong Han
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Lina Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Baolong Luo
- School of Food Science and Technology, Shihezi University, Shihezi 832000, China
| | - Yongqing Ni
- School of Food Science and Technology, Shihezi University, Shihezi 832000, China
| | - Nidhi Bansal
- School of Agriculture and Food Science, Faculty of Science, The University of Queensland, St Lucia 4072, Australia
| | - Peng Zhou
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
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11
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Mukhamejanova A, Alikulov Z, Shapekova N, Aubakirova K, Mukhtarov A. The effect of antioxidants on xanthine oxidase activity in fresh ovine milk. POTRAVINARSTVO 2021. [DOI: 10.5219/1662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In the present, the consequences of nitrate pollution of the environment are very pronounced. In humans and animals, microorganisms can reduce nitrates to nitrites, which cause cancer. Purified and homogeneous xanthine oxidase (XO) of cow's milk can restore these compounds, which makes the article extremely relevant. The purpose of the article is to determine the effect of antioxidants on the activity of xanthine oxidase in fresh ovine milk. Various natural and artificial antioxidants were examined for the detection of xanthine oxidase (XO) activity in ovine milk. Among the natural antioxidants, L-cysteine was more effective in the stabilization of XO in heated milk. XO of sheep milk activated by heat treatment in the presence of cysteine and molybdenum became able to convert nitrate and nitrite to nitric oxide (NO). Therefore, L-cysteine was used for double purposes: as the protector of enzyme active center against the oxidation during heat treatment of milk and as a reagent for S-nitrosothiol formation. Hypoxanthine, as a natural substrate of XO, is an effective electron donor for nitrate reductase (NR) and nitrite reductase (NiR) activities. Heat treatment of the milk in the presence of exogenous lecithin increased the activity of NR and NiR of XO and CysNO formation. Thus, during the heat treatment: a) excess of exogenous phospholipids disintegrates the structure of milk fat globule membrane (MFGM) and b) enzyme molecules denatured partially and their active center became available for exogenous cysteine, molybdenum, hypoxanthine, and nitrate or nitrite.
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12
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Mukhamejanova A, Alikulov Z, Tuganova B, Adamzhanova Z. The xanthine oxidase and its associated activities in the ovine milk and liver: distinctive in impact of in vivo molybdenum. POTRAVINARSTVO 2021. [DOI: 10.5219/1665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Xanthine oxidase is molybdenum and iron-containing flavoprotein, catalyzing the final oxidation stage of purines and oxidative transformation of pterins and some aliphatic and aromatic aldehydes. Despite the importance of this enzyme, the distribution of xanthine oxidase in traditional household animal’s milk and tissues is unknown. Formerly, we have found most of the xanthine oxidase molecules in animal milk are inactive because of a lack of molybdenum. Ovine milk was processed by inserting in vivo molybdenum (tungsten) into drinking water. We gave opposite dates in the presence of tungsten too. Heating the milk of animals at 80 °C for 5 minutes in the presence of molybdenum and cysteine led to a sharp increase of xanthine oxidase and its associated – nitrate reductase and nitrite reductase activities. The change of xanthine oxidase and its associated activities were examined by spectrophotometry after treatment. It was established that metal ions added in drinking water for animals have an impact on enzyme activities. The activity is formed in the ovine liver even in the absence of exogenous molybdenum in drinking water. The associated activities of liver enzymes in the presence of molybdenum in drinking water had slightly increased. Tungsten-containing water led to the loss of all activities of liver xanthine oxidase. It is proposed that the liver contains a special protein involving in the incorporation of molybdenum (or tungsten) into xanthine oxidase molecule, however, the milk or mammary gland compounds lack this protein.
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13
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Kobayashi J. Nitrite in breast milk: roles in neonatal pathophysiology. Pediatr Res 2021; 90:30-36. [PMID: 33173179 DOI: 10.1038/s41390-020-01247-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 10/03/2020] [Accepted: 10/13/2020] [Indexed: 11/09/2022]
Abstract
Dietary nitrate has beneficial effects on health maintenance and prevention of lifestyle-related diseases in adulthood by serving as an alternative source of nitric oxide (NO) through the enterosalivary nitrate-nitrite-NO pathway, particularly when endogenous NO generation is lacking due to vascular endothelial dysfunction. However, this pathway is not developed in the early postnatal period due to a lack of oral commensal nitrate-reducing bacteria and less saliva production than in adults. To compensate for the decrease in nitrite during this period, colostrum contains the highest amount of nitrite compared with transitional, mature, and even artificial milk, suggesting that colostrum plays an important role in tentatively replenishing nitrite, in addition to involving a nutritional aspect, until the enterosalivary nitrate-nitrite-NO pathway is established. Increasing evidence demonstrates that breast milk rich in nitrite can be effective in the prevention of neonatal infections and gastrointestinal diseases such as infantile hypertrophic pyloric stenosis and necrotizing enterocolitis, suggesting that breastfeeding is advantageous for newborns at risk, given the physiological role of nitrite in the early postnatal period. IMPACT: The aim of this review is to discuss the physiological roles of nitrite in breast milk and its implications for neonates. Nitrite in breast milk may compensate for the decrease in nitrite during the early neonatal period until the enterosalivary nitrate-nitrite-nitric oxide pathway is established. Breast milk rich in nitrite may be effective in the prevention of neonatal infections and gastrointestinal diseases by providing nitric oxide bioavailability.
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Affiliation(s)
- Jun Kobayashi
- Department of Clinical Dietetics and Human Nutrition, Faculty of Pharmacy and Pharmaceutical Science, Josai University, Saitama, Japan.
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14
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Thum C, Roy NC, Everett DW, McNabb WC. Variation in milk fat globule size and composition: A source of bioactives for human health. Crit Rev Food Sci Nutr 2021; 63:87-113. [PMID: 34190660 DOI: 10.1080/10408398.2021.1944049] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Milk fat globules (MFGs) are secreted from the mammalian gland and are composed of a triacylglycerol core surrounded by a triple membrane structure, the milk fat globule membrane (MFGM). The MFGM contains complex lipids and proteins reported to have nutritional, immunological, neurological and digestive functions. Human and ruminant milk are shown to share a similar MFG structure but with different size, profile and abundance of protein and polar lipids. This review summarizes the reported data on human, bovine, caprine and ovine MFG composition and concentration of bioactive components in different MFG-size fractions. A comprehensive understanding of compositional variations between milk from different species and MFG size fractions may help promote various milk sources as targeted supplements to improve human development and health. MFG size and MFGM composition are species-specific and affected by lactation, diet and breed (or maternal origin). Purification and enrichment methods for some bioactive proteins and lipids present in the MFGM have yet to be established or are not scaled sufficiently to be used to supplement human diets. To overcome this problem, MFG size selection through fractionation or herd selection may provide a convenient way to pre-enrich the MFG fraction with specific protein and lipid components to fulfill human dietary and health requirements.
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Affiliation(s)
- Caroline Thum
- AgResearch, Grasslands Research Centre, Palmerston North, New Zealand.,Riddet Institute, Palmerston North, New Zealand
| | - Nicole C Roy
- AgResearch, Grasslands Research Centre, Palmerston North, New Zealand.,Riddet Institute, Palmerston North, New Zealand.,High-Value Nutrition National Science Challenge, The University of Auckland, Auckland, New Zealand.,Department of Human Nutrition, University of Otago, Dunedin, New Zealand
| | - David W Everett
- AgResearch, Grasslands Research Centre, Palmerston North, New Zealand.,Riddet Institute, Palmerston North, New Zealand
| | - Warren C McNabb
- Riddet Institute, Palmerston North, New Zealand.,High-Value Nutrition National Science Challenge, The University of Auckland, Auckland, New Zealand
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15
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Wang M, Cao C, Wang Y, Li H, Li H, Yu J. Comparison of bovine milk fat globule membrane protein retention by different ultrafiltration membranes using a label-free proteomic approach. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Meng F, Uniacke-Lowe T, Ryan AC, Kelly AL. The composition and physico-chemical properties of human milk: A review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.03.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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17
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Vora B, Brackman DJ, Zou L, Garcia-Cremades M, Sirota M, Savic RM, Giacomini KM. Oxypurinol pharmacokinetics and pharmacodynamics in healthy volunteers: Influence of BCRP Q141K polymorphism and patient characteristics. Clin Transl Sci 2021; 14:1431-1443. [PMID: 33931953 PMCID: PMC8301548 DOI: 10.1111/cts.12992] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/23/2020] [Accepted: 01/14/2021] [Indexed: 12/30/2022] Open
Abstract
The missense variant, breast cancer resistance protein (BCRP) p.Q141K, which encodes a reduced function BCRP, has been linked to poor response to allopurinol. Using a multifaceted approach, we aimed to characterize the relationship(s) between BCRP p.Q141K, the pharmacokinetics (PK) and pharmacodynamics (PD) of oxypurinol (the active metabolite of allopurinol), and serum uric acid (SUA) levels. A prospective clinical study (NCT02956278) was conducted in which healthy volunteers were given a single oral dose of 300 mg allopurinol followed by intensive blood sampling. Data were analyzed using noncompartmental analysis and population PK/PD modeling. Additionally, electronic health records were analyzed to investigate whether clinical inhibitors of BCRP phenocopied the effects of the p.Q141K variant with respect to SUA. Subjects homozygous for p.Q141K had a longer half‐life (34.2 ± 12.2 h vs. 19.1 ± 1.42 h) of oxypurinol. The PK/PD model showed that women had a 24.8% lower volume of distribution. Baseline SUA was affected by p.Q141K genotype and renal function; that is, it changed by 48.8% for every 1 mg/dl difference in serum creatinine. Real‐world data analyses showed that patients prescribed clinical inhibitors of BCRP have higher SUA levels than those that have not been prescribed inhibitors of BCRP, consistent with the idea that BCRP inhibitors phenocopy the effects of p.Q141K on uric acid levels. This study identified important covariates of oxypurinol PK/PD that could affect its efficacy for the treatment of gout as well as a potential side effect of BCRP inhibitors on increasing uric acid levels, which has not been described previously.
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Affiliation(s)
- Bianca Vora
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Deanna J Brackman
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Ling Zou
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Maria Garcia-Cremades
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Marina Sirota
- Bakar Computational Health Sciences Institute, University of California San Francisco, San Francisco, CA, USA
| | - Radojka M Savic
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Kathleen M Giacomini
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA.,Institute for Human Genetics, University of California San Francisco, San Francisco, CA, USA
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18
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Different processed milk with residual xanthine oxidase activity and risk of increasing serum uric acid level. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.100892] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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19
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Changes in bioactive proteins and serum proteome of human milk under different frozen storage. Food Chem 2021; 352:129436. [PMID: 33691214 DOI: 10.1016/j.foodchem.2021.129436] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 02/18/2021] [Accepted: 02/21/2021] [Indexed: 11/20/2022]
Abstract
This study aimed to investigate changes in macronutrients, total bacterial count, and serum proteome of human milk (HM) under different frozen storage (-18°C and -60°C, 60 d and 180 d) by using IBT Labeling proteomics techniques and ELISA kit. The results indicated that total protein concentrations and total aerobic bacterial counts were significantly decreased at -18°C, while no difference at -60°C. A total of 1617 proteins were identified and quantified, and 173 proteins were significantly different. The -18°C storage had much higher influence on HM serum protein profiles than that of -60°C. Increased milk fat globule membrane (MFGM) proteins at -18°C are highly related to the damage of MFGM and transfer of MFGM proteins. The reduction of bioactive proteins is probably related to the ice-induced denaturation. In conclusion, fast cooling and ultra-low constant temperature are more suitable for the cryopreservation of human milk.
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20
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Vezina B, Al-Harbi H, Ramay HR, Soust M, Moore RJ, Olchowy TWJ, Alawneh JI. Sequence characterisation and novel insights into bovine mastitis-associated Streptococcus uberis in dairy herds. Sci Rep 2021; 11:3046. [PMID: 33542314 PMCID: PMC7862697 DOI: 10.1038/s41598-021-82357-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 01/20/2021] [Indexed: 12/16/2022] Open
Abstract
Streptococcus uberis is one of the most frequent mastitis-causing pathogens isolated from dairy cows. Further understanding of S. uberis genetics may help elucidate the disease pathogenesis. We compared the genomes of S. uberis isolates cultured from dairy cows located in distinctly different geographic regions of Australia. All isolates had novel multi locus sequence types (MLST) indicating a highly diverse population of S. uberis. Global clonal complexes (GCC) were more conserved. GCC ST86 and GCC ST143 represented 30% of the total isolates (n = 27) and were clustered within different geographic regions. Core genome phylogeny revealed low phylogenetic clustering by region, isolation source, and MLST. Identification of putative sortase (srtA) substrates and generation of a custom putative virulence factor database revealed genes which may explain the affinity of S. uberis for mammary tissue, evasion of antimicrobial efforts and disease pathogenesis. Of 27 isolates, four contained antibiotic resistance genes including an antimicrobial resistance cluster containing mel/mef(A), mrsE, vatD, lnuD, and transposon-mediated lnuC was also identified. These are novel genes for S. uberis, which suggests interspecies lateral gene transfer. The presence of resistance genes across the two geographic regions tested within one country supports the need for a careful, tailored, implementation and monitoring of antimicrobial stewardship.
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Affiliation(s)
- Ben Vezina
- Good Clinical Practice Research Group (GCPRG), The University of Queensland, School of Veterinary Science, Gatton, QLD, 4343, Australia.,Centre for Cell Factories and Biopolymers, Griffith Institute for Drug Discovery, Griffith University, Nathan, Australia
| | - Hulayyil Al-Harbi
- The University of Queensland, School of Veterinary Science, Gatton, QLD, 4343, Australia
| | - Hena R Ramay
- International Microbiome Centre, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Martin Soust
- Terragen Biotech Pty Ltd., Coolum Beach, QLD, 4573, Australia
| | - Robert J Moore
- School of Science, RMIT University, Bundoora, Melbourne, 3083, Australia
| | - Timothy W J Olchowy
- Good Clinical Practice Research Group (GCPRG), The University of Queensland, School of Veterinary Science, Gatton, QLD, 4343, Australia.,Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, T3R 1J3, Canada
| | - John I Alawneh
- Good Clinical Practice Research Group (GCPRG), The University of Queensland, School of Veterinary Science, Gatton, QLD, 4343, Australia. .,The University of Queensland, School of Veterinary Science, Gatton, QLD, 4343, Australia.
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21
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Soltanzadeh M, Peighambardoust SH, Gullon P, Hesari J, Gullón B, Alirezalu K, Lorenzo J. Quality aspects and safety of pulsed electric field (PEF) processing on dairy products: a comprehensive review. FOOD REVIEWS INTERNATIONAL 2020. [DOI: 10.1080/87559129.2020.1849273] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Maral Soltanzadeh
- Department of Food Science, College of Agriculture, University of Tabriz, Tabriz, I.R. Iran
| | | | - Patricia Gullon
- Department of Chemical Engineering, Faculty of Science, University of Vigo (Campus Ourense), Ourense, Spain
| | - Javad Hesari
- Department of Chemical Engineering, Faculty of Science, University of Vigo (Campus Ourense), Ourense, Spain
| | - Beatriz Gullón
- Department of Chemical Engineering, Faculty of Science, University of Vigo (Campus Ourense), Ourense, Spain
| | - Kazem Alirezalu
- Department of Food Science and Technology, Ahar Faculty of Agriculture and Natural Resources, University of Tabriz, Tabriz, I.R. Iran
| | - Jose Lorenzo
- Centro Tecnológico de la Carne de Galicia, Rúa Galicia No. 4, Parque Tecnológico de Galicia, San Cibrao das Viñas, Ourense, Spain
- Área de Tecnología de los Alimentos, Facultad de Ciencias de Ourense, Universidad de Vigo, Ourense, Spain
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22
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Al-Shehri SS. Reactive oxygen and nitrogen species and innate immune response. Biochimie 2020; 181:52-64. [PMID: 33278558 DOI: 10.1016/j.biochi.2020.11.022] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 11/21/2020] [Accepted: 11/30/2020] [Indexed: 12/30/2022]
Abstract
The innate immune system is the first line of defense against pathogens and is characterized by its fast but nonspecific response. One important mechanism of this system is the production of the biocidal reactive oxygen and nitrogen species, which are widely distributed within biological systems, including phagocytes and secretions. Reactive oxygen and nitrogen species are short-lived intermediates that are biochemically synthesized by various enzymatic reactions in aerobic organisms and are regulated by antioxidants. The physiological levels of reactive species play important roles in cellular signaling and proliferation. However, higher concentrations and prolonged exposure can fight infections by damaging important microbial biomolecules. One feature of the reactive species generation system is the interaction between its components to produce more biocidal agents. For example, the phagocytic NADPH oxidase complex generates superoxide, which functions as a precursor for antimicrobial hydrogen peroxide synthesis. Peroxide is then used by myeloperoxidase in the same cells to generate hypochlorous acid, a highly microbicidal agent. Studies on animal models and microorganisms have shown that deficiency of these antimicrobial agents is associated with severe recurrent infections and immunocompromised diseases, such as chronic granulomatous disease. There is accumulating evidence that reactive species have important positive aspects on human health and immunity; however, some important promising features of this system remain obscure.
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Affiliation(s)
- Saad S Al-Shehri
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P. O. Box 11099, Taif, 21944, Saudi Arabia.
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23
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Changes in bovine milk fat globule membrane protein components of cream caused by different extent of churning using a label-free proteomic approach. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.110058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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24
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Zou Z, Bouchereau-De Pury C, Hewavitharana AK, Al-Shehri SS, Duley JA, Cowley DM, Koorts P, Shaw PN, Bansal N. A sensitive and high-throughput fluorescent method for determination of oxidase activities in human, bovine, goat and camel milk. Food Chem 2020; 336:127689. [PMID: 32763736 DOI: 10.1016/j.foodchem.2020.127689] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/20/2020] [Accepted: 07/26/2020] [Indexed: 01/16/2023]
Abstract
Milk oxidases are an integral part of milk immune system, and good indicators for milk thermal history. Current assay methods for milk oxidases are either insensitive, tedious or not cost-effective. In this study, a high-throughput fluorescence assay method for determination of xanthine oxidase (XO) and polyamine oxidase (PAO) activities in milk samples was developed. The hydrogen peroxide generated by XO catalysed oxidation of hypoxanthine, and PAO catalysed oxidation of spermine, was coupled to horseradish peroxidase conversion of Amplex® Red (1-(3,7-dihydroxyphenoxazin-10-yl)ethanone) to the fluorescent product resorufin. The assay was highly sensitive, with limits of detection of activity in milk being 3 × 10-7 and 7 × 10-7 U/mL for XO and PAO, respectively. Intra-run and inter-run results showed good assay repeatability and reproducibility. The assay was successfully applied to survey the XO and PAO activities in human, bovine, goat and camel milk samples, and it can be readily adapted for measurements of other oxidase activities.
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Affiliation(s)
- Zhengzheng Zou
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD, Australia
| | - Claire Bouchereau-De Pury
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD, Australia; Laïta, Brest Cedex, France
| | | | - Saad S Al-Shehri
- College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - John A Duley
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD, Australia
| | - David M Cowley
- Mater Research Institute, The University of Queensland, Woolloongabba, QLD, Australia
| | - Pieter Koorts
- Department of Neonatology, Royal Brisbane and Women's Hospital, Herston, QLD, Australia
| | - Paul N Shaw
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD, Australia
| | - Nidhi Bansal
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD, Australia; School of Pharmacy, The University of Queensland, Woolloongabba, QLD, Australia.
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25
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Al-Shehri SS, Duley JA, Bansal N. Xanthine oxidase-lactoperoxidase system and innate immunity: Biochemical actions and physiological roles. Redox Biol 2020; 34:101524. [PMID: 32334145 PMCID: PMC7183230 DOI: 10.1016/j.redox.2020.101524] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 03/22/2020] [Accepted: 03/24/2020] [Indexed: 02/01/2023] Open
Abstract
The innate immune system in mammals is the first-line defense that plays an important protective role against a wide spectrum of pathogens, especially during early life before the adaptive immune system develops. The enzymes xanthine oxidase (XO) and lactoperoxidase (LPO) are widely distributed in mammalian tissues and secretions, and have a variety of biological functions including in innate immunity, provoking much interest for both in vitro and in vivo applications. The enzymes are characterized by their generation of reactive oxygen and nitrogen species, including hydrogen peroxide, hypothiocyanite, nitric oxide, and peroxynitrite. XO is a major generator of hydrogen peroxide and superoxide that subsequently trigger a cascade of oxidative radical pathways, including those produced by LPO, which have bactericidal and bacteriostatic effects against pathogens including opportunistic bacteria. In addition to their role in host microbial defense, reactive oxygen and nitrogen species play important physiological roles as second messenger cell signaling molecules, including cellular proliferation, differentiation and gene expression. There are several indications that the reactive species generated by peroxide have positive effects on human health, particularly in neonates; however, some important in vivo aspects of this system remain obscure. The primary dependence of the system on hydrogen peroxide has led us to propose it is particularly relevant to neonate mammals during milk feeding.
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Affiliation(s)
- Saad S Al-Shehri
- College of Applied Medical Sciences, Taif University, Taif, 21944, Saudi Arabia.
| | - John A Duley
- School of Pharmacy, The University of Queensland, St Lucia, 4102, Australia
| | - Nidhi Bansal
- School of Pharmacy, The University of Queensland, St Lucia, 4102, Australia; School of Agriculture and Food Science, The University of Queensland, St Lucia, 4102, Australia
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26
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Macronutrients, total aerobic bacteria counts and serum proteome of human milk during refrigerated storage. FOOD BIOSCI 2020. [DOI: 10.1016/j.fbio.2020.100562] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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27
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Fontecha J, Brink L, Wu S, Pouliot Y, Visioli F, Jiménez-Flores R. Sources, Production, and Clinical Treatments of Milk Fat Globule Membrane for Infant Nutrition and Well-Being. Nutrients 2020; 12:E1607. [PMID: 32486129 PMCID: PMC7352329 DOI: 10.3390/nu12061607] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 05/26/2020] [Accepted: 05/28/2020] [Indexed: 12/18/2022] Open
Abstract
Research on milk fat globule membrane (MFGM) is gaining traction. The interest is two-fold; on the one hand, it is a unique trilayer structure with specific secretory function. On the other hand, it is the basis for ingredients with the presence of phospho- and sphingolipids and glycoproteins, which are being used as food ingredients with valuable functionality, in particular, for use as a supplement in infant nutrition. This last application is at the center of this Review, which aims to contribute to understanding MFGM's function in the proper development of immunity, cognition, and intestinal trophism, in addition to other potential effects such as prevention of diseases including cardiovascular disease, impaired bone turnover and inflammation, skin conditions, and infections as well as age-associated cognitive decline and muscle loss. The phospholipid composition of MFGM from bovine milk is quite like human milk and, although there are some differences due to dairy processing, these do not result in a chemical change. The MFGM ingredients, as used to improve the formulation in different clinical studies, have indeed increased the presence of phospholipids, sphingolipids, glycolipids, and glycoproteins with the resulting benefits of different outcomes (especially immune and cognitive outcomes) with no reported adverse effects. Nevertheless, the precise mechanism(s) of action of MFGM remain to be elucidated and further basic investigation is warranted.
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Affiliation(s)
- Javier Fontecha
- Food Lipid Biomarkers and Health Group, Institute of Food Science Research (CIAL, CSIC-UAM), 28049 Madrid, Spain
| | - Lauren Brink
- Department of Medical Affairs, Mead Johnson Nutrition, Evansville, IN 47721, USA; (L.B.); (S.W.)
| | - Steven Wu
- Department of Medical Affairs, Mead Johnson Nutrition, Evansville, IN 47721, USA; (L.B.); (S.W.)
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Yves Pouliot
- STELA Dairy Research Center, Institute of Nutrition and Functional Foods (INAF), Department of Food Sciences, Laval University, Québec, QC G1V 0A6, Canada;
| | - Francesco Visioli
- Department of Molecular Medicine, University of Padova, 35121 Padova, Italy;
- IMDEA-Food, CEI UAM + CSIC, 28049 Madrid, Spain
| | - Rafael Jiménez-Flores
- Food Science and Technology Department, The Ohio State University, Columbus, OH 43210, USA
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28
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Ozturk G, Shah IM, Mills DA, German JB, de Moura Bell JMLN. The antimicrobial activity of bovine milk xanthine oxidase. Int Dairy J 2019; 102. [PMID: 32863603 DOI: 10.1016/j.idairyj.2019.104581] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Mammalian milk is a source of antimicrobial compounds such as xanthine oxidase (XO). The interplay of infant saliva, which contains the substrates for XO activity, and human milk containing XO has been recently shown to inhibit the growth of pathogenic bacteria. Based on the complex and protective mechanism observed in human milk, we hypothesized that bovine milk XO operates similarly, thus representing an opportunity to investigate its functionality in broader health implications. We demonstrated that bovine milk-hypoxanthine mixture (0 to 400 μM) inhibited several Gram-negative and -positive bacterial pathogens in a dose-dependent manner. Kinetic experiments revealed that XO catalyzed hypoxanthine reduction (Km, 58.0 μM; Vmax, 5.1 μmol-1 min-1 mg) resulted in the production of antimicrobial hydrogen peroxide. These results demonstrate that the antimicrobial properties of bovine milk XO are similar to those of human milk XO with significant implications for the development of novel products targeting infant health.
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Affiliation(s)
- Gulustan Ozturk
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA, 95616, United States of America
| | - Ishita M Shah
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA, 95616, United States of America.,Foods for Health Institute, University of California, Davis, One Shields Avenue, Davis, CA, 95616, United States of America
| | - David A Mills
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA, 95616, United States of America.,Foods for Health Institute, University of California, Davis, One Shields Avenue, Davis, CA, 95616, United States of America
| | - J Bruce German
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA, 95616, United States of America.,Foods for Health Institute, University of California, Davis, One Shields Avenue, Davis, CA, 95616, United States of America
| | - Juliana M L N de Moura Bell
- Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA, 95616, United States of America.,Biological and Agricultural Engineering, Davis, One Shields Avenue, Davis, CA, 95616, United States of America
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29
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Ma Y, Zhang L, Wu Y, Zhou P. Changes in milk fat globule membrane proteome after pasteurization in human, bovine and caprine species. Food Chem 2019; 279:209-215. [DOI: 10.1016/j.foodchem.2018.12.015] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 11/30/2018] [Accepted: 12/03/2018] [Indexed: 02/07/2023]
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30
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Monika, Sharma NK, Thakur N, Sheetal, Savitri, Bhalla TC. Xanthine oxidase of Acinetobacter calcoaceticus RL2-M4: Production, purification and characterization. Protein Expr Purif 2019; 160:36-44. [PMID: 30926462 DOI: 10.1016/j.pep.2019.03.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 03/19/2019] [Accepted: 03/25/2019] [Indexed: 02/06/2023]
Abstract
Xanthine oxidase (EC 1.17.3.2) is a key enzyme of purine metabolism and has potential applications in food and pharmaceutical industries. In the present study, a new bacterial source of xanthine oxidase i.e. Acinetobacter calcoaceticus RL2-M4 with high oxidase activity was isolated from soil. The culture conditions were optimized with one variable at a time (OVAT) and response surface methodology (RSM) approaches included: a minimal salt medium (MSM) of pH 7.0 supplemented with 0.8% yeast extract, 8.5 mM xanthine and incubation at 30 °C for 24 h. Under these culture conditions 11.57 fold increase in the production of this enzyme was achieved. The enzyme was purified from A. calcoaceticus RL2-M4 using anion exchange chromatography to 8.18 fold with 31% yield and specific activity of 4.58 U/mg protein. SDS-PAGE analysis of the purified enzyme revealed that it was homodimer of 95 kDa and its native molecular mass was estimated to be 190 kDa. This enzyme was found to be stable at 35 °C for 5 h. The purified xanthine oxidase of A. calcoaceticus RL2-M4 had Km 0.3 mM and Vmax 5.8 U/mg protein using xanthine as substrate. The activity and stability characteristic of xanthine oxidase of A. calcoaceticus RL2-M4 makes it a potentially good enzyme for industrial applications.
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Affiliation(s)
- Monika
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, Himachal Pradesh, 171005, India
| | - Nirmal Kant Sharma
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, Himachal Pradesh, 171005, India
| | - Neerja Thakur
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, Himachal Pradesh, 171005, India
| | - Sheetal
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, Himachal Pradesh, 171005, India
| | - Savitri
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, Himachal Pradesh, 171005, India
| | - Tek Chand Bhalla
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, Himachal Pradesh, 171005, India.
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31
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Guerin J, Burgain J, Gomand F, Scher J, Gaiani C. Milk fat globule membrane glycoproteins: Valuable ingredients for lactic acid bacteria encapsulation? Crit Rev Food Sci Nutr 2017; 59:639-651. [PMID: 28976212 DOI: 10.1080/10408398.2017.1386158] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The membrane (Milk Fat Globule Membrane - MFGM) surrounding the milk fat globule is becoming increasingly studied for its use in food applications due to proven nutritional and technological properties. This review focuses first on current researches which have been led on the MFGM structure and composition and also on laboratory and industrial purification and isolation methods developed in the last few years. The nutritional, health benefits and techno-functional properties of the MFGM are then discussed. Finally, new techno-functional opportunities of MFGM glycoproteins as a possible ingredient for Lactic Acid Bacteria (LAB) encapsulation are detailed. The ability of MFGM to form liposomes entrapping bioactive compounds has been already demonstrated. One drawback is that liposomes are too small to be used for bacteria encapsulation. For the first time, this review points out the numerous advantages to use MFGM glycoproteins as a protecting, encapsulating matrix for bacteria and especially for LAB.
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Affiliation(s)
- Justine Guerin
- a LIBio, Laboratoire d'Ingénierie des Biomolécules, Université de Lorraine , 2, av de la Forêt de Haye, BP, Vandœuvre-lès-Nancy , France
| | - Jennifer Burgain
- a LIBio, Laboratoire d'Ingénierie des Biomolécules, Université de Lorraine , 2, av de la Forêt de Haye, BP, Vandœuvre-lès-Nancy , France
| | - Faustine Gomand
- a LIBio, Laboratoire d'Ingénierie des Biomolécules, Université de Lorraine , 2, av de la Forêt de Haye, BP, Vandœuvre-lès-Nancy , France
| | - Joël Scher
- a LIBio, Laboratoire d'Ingénierie des Biomolécules, Université de Lorraine , 2, av de la Forêt de Haye, BP, Vandœuvre-lès-Nancy , France
| | - Claire Gaiani
- a LIBio, Laboratoire d'Ingénierie des Biomolécules, Université de Lorraine , 2, av de la Forêt de Haye, BP, Vandœuvre-lès-Nancy , France
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32
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Nile SH, Keum YS, Nile AS, Kwon YD, Kim DH. Potential cow milk xanthine oxidase inhibitory and antioxidant activity of selected phenolic acid derivatives. J Biochem Mol Toxicol 2017; 32. [DOI: 10.1002/jbt.22005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 09/21/2017] [Accepted: 09/26/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Shivraj Hariram Nile
- Department of Bioresources and Food Science, College of Life and Environmental Sciences; Konkuk University; Seoul 05029 Republic of Korea
- Department of Crop Science, Sanghuh College of Life Sciences; Konkuk University; Seoul 05029 Republic of Korea
| | - Young Soo Keum
- Department of Crop Science, Sanghuh College of Life Sciences; Konkuk University; Seoul 05029 Republic of Korea
| | - Arti Shivraj Nile
- Department of Bioresources and Food Science, College of Life and Environmental Sciences; Konkuk University; Seoul 05029 Republic of Korea
| | - Young Deuk Kwon
- Department of Bioresources and Food Science, College of Life and Environmental Sciences; Konkuk University; Seoul 05029 Republic of Korea
| | - Doo Hwan Kim
- Department of Bioresources and Food Science, College of Life and Environmental Sciences; Konkuk University; Seoul 05029 Republic of Korea
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Benefits of Lactoferrin, Osteopontin and Milk Fat Globule Membranes for Infants. Nutrients 2017; 9:nu9080817. [PMID: 28788066 PMCID: PMC5579611 DOI: 10.3390/nu9080817] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 07/23/2017] [Accepted: 07/24/2017] [Indexed: 12/11/2022] Open
Abstract
The provision of essential and non-essential amino acids for breast-fed infants is the major function of milk proteins. In addition, breast-fed infants might benefit from bioactivities of milk proteins, which are exhibited in the intestine during the digestive phase and by absorption of intact proteins or derived peptides. For lactoferrin, osteopontin and milk fat globule membrane proteins/lipids, which have not until recently been included in substantial amounts in infant formulas, in vitro experiments and animal models provide a convincing base of evidence for bioactivities, which contribute to the protection of the infant from pathogens, improve nutrient absorption, support the development of the immune system and provide components for optimal neurodevelopment. Technologies have become available to obtain these compounds from cow´s milk and the bovine compounds also exhibit bioactivities in humans. Randomized clinical trials with experimental infant formulas incorporating lactoferrin, osteopontin, or milk fat globule membranes have already provided some evidence for clinical benefits. This review aims to compare findings from laboratory and animal experiments with outcomes of clinical studies. There is good justification from basic science and there are promising results from clinical studies for beneficial effects of lactoferrin, osteopontin and the milk fat globule membrane complex of proteins and lipids. Further studies should ideally be adequately powered to investigate effects on clinically relevant endpoints in healthy term infants.
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Douëllou T, Montel M, Thevenot Sergentet D. Invited review: Anti-adhesive properties of bovine oligosaccharides and bovine milk fat globule membrane-associated glycoconjugates against bacterial food enteropathogens. J Dairy Sci 2017; 100:3348-3359. [DOI: 10.3168/jds.2016-11611] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 12/14/2016] [Indexed: 12/11/2022]
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Brijesha N, Aparna HS. Comprehensive characterization of bioactive peptides from Buffalo (Bubalus bubalis) colostrum and milk fat globule membrane proteins. Food Res Int 2017; 97:95-103. [PMID: 28578070 DOI: 10.1016/j.foodres.2017.03.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 03/10/2017] [Accepted: 03/19/2017] [Indexed: 11/19/2022]
Abstract
Milk fat is dispersed in milk as small spherical globules stabilized in the form of emulsion by its surrounding membrane, often referred to as fat globule membrane (FGM). Buffalo, a major milking mammal of Asia and second most milking mammal across the globe presents physicochemical features different from that of other ruminant species containing higher content of lipids and proteins. The present study describes characterization of FGM proteins isolated from both buffalo milk and colostrum. A detailed proteomic analysis of peptides generated by in vitro gastrointestinal simulation digestion of buffalo milk and colostrum FGM fractions was performed by nLC-ESI MS/MS. The peptide based clustering of FGM proteins unravelled association of membrane proteins in fat transport, enzymatic activity, general transport, defence, cell signalling, membrane/protein trafficking protein synthesis/binding/folding including unknown functions. Gene annotation, STRING and YLoc analyses provided putative insights into major secretory pathways in milk and colostrum FGM peptides, interactive protein networks including their sub cellular localization. The peptides of milk and colostrum FGM offered cellular protection as powerful antioxidants indicated their promising perspectives in commercial formulations and nutraceuticals.
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Affiliation(s)
- N Brijesha
- DOS in Biotechnology, University of Mysore, Manasagangotri, Mysore 570 006, India
| | - H S Aparna
- DOS in Biotechnology, University of Mysore, Manasagangotri, Mysore 570 006, India.
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Haddadian Z, Eyres GT, Carne A, Everett DW, Bremer P. Impact of different milk fat globule membrane preparations on protein composition, xanthine oxidase activity, and redox potential. Int Dairy J 2017. [DOI: 10.1016/j.idairyj.2016.09.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Haddadian Z, Bremer P, Eyres GT, Carne A, Everett DW. The impact of cream churning conditions on xanthine oxidase activity and oxidation–reduction potential in model emulsion systems. Int Dairy J 2016. [DOI: 10.1016/j.idairyj.2016.01.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Monks J, Dzieciatkowska M, Bales ES, Orlicky DJ, Wright RM, McManaman JL. Xanthine oxidoreductase mediates membrane docking of milk-fat droplets but is not essential for apocrine lipid secretion. J Physiol 2016; 594:5899-5921. [PMID: 27357166 PMCID: PMC5063925 DOI: 10.1113/jp272390] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 06/14/2016] [Indexed: 12/21/2022] Open
Abstract
KEY POINTS Xanthine oxidoreductase (XOR) modulates milk lipid secretion and lactation initiation. XOR is required for butyrophilin1a1 clustering in the membrane during milk lipid secretion. XOR mediates apical membrane reorganization during milk lipid secretion. Loss of XOR delays milk fat globule secretion. XOR loss alters the proteome of milk fat globules. ABSTRACT Apocrine secretion is utilized by epithelial cells of exocrine glands. These cells bud off membrane-bound particles into the lumen of the gland, losing a portion of the cytoplasm in the secretion product. The lactating mammary gland secretes milk lipid by this mechanism, and xanthine oxidoreductase (XOR) has long been thought to be functionally important. We generated mammary-specific XOR knockout (MGKO) mice, expecting lactation to fail. Histology of the knockout glands showed very large lipid droplets enclosed in the mammary alveolar cells, but milk analysis showed that these large globules were secreted. Butyrophilin, a membrane protein known to bind to XOR, was clustered at the point of contact of the cytoplasmic lipid droplet with the apical plasma membrane, in the wild-type gland but not in the knockout, suggesting that XOR mediates 'docking' to this membrane. Secreted milk fat globules were isolated from mouse milk of wild-type and XOR MGKO dams, and subjected to LC-MS/MS for analysis of protein component. Proteomic results showed that loss of XOR leads to an increase in cytoplasmic, cytoskeletal, Golgi apparatus and lipid metabolism proteins associated with the secreted milk fat globule. Association of XOR with the lipid droplet results in membrane docking and more efficient retention of cytoplasmic components by the secretory cell. Loss of XOR then results in a reversion to a more rudimentary, less efficient, apocrine secretion mechanism, but does not prevent milk fat globule secretion.
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Affiliation(s)
- Jenifer Monks
- Division of Reproductive Sciences, Department of Obstetrics and Gynecology, School of Medicine, University of Colorado Anschutz Medical Center, Aurora, CO, 80045, USA.
| | - Monika Dzieciatkowska
- Biochemistry Department, School of Medicine, University of Colorado Anschutz Medical Center, Aurora, CO, 80045, USA
| | - Elise S Bales
- Division of Reproductive Sciences, Department of Obstetrics and Gynecology, School of Medicine, University of Colorado Anschutz Medical Center, Aurora, CO, 80045, USA
| | - David J Orlicky
- Department of Pathology, School of Medicine, University of Colorado Anschutz Medical Center, Aurora, CO, 80045, USA
| | | | - James L McManaman
- Division of Reproductive Sciences, Department of Obstetrics and Gynecology, School of Medicine, University of Colorado Anschutz Medical Center, Aurora, CO, 80045, USA
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Kamyabi MA, Hajari N. Preparation of mesoporous silica templated metal nanostructure on Ni foam substrate and its application for the determination of hydrogen peroxide. J APPL ELECTROCHEM 2016. [DOI: 10.1007/s10800-016-0986-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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40
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Rashidinejad A, Birch EJ, Everett DW. Green tea catechins suppress xanthine oxidase activity in dairy products: An improved HPLC analysis. J Food Compost Anal 2016. [DOI: 10.1016/j.jfca.2016.03.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Al-Shehri SS, Knox CL, Liley HG, Cowley DM, Wright JR, Henman MG, Hewavitharana AK, Charles BG, Shaw PN, Sweeney EL, Duley JA. Breastmilk-Saliva Interactions Boost Innate Immunity by Regulating the Oral Microbiome in Early Infancy. PLoS One 2015; 10:e0135047. [PMID: 26325665 PMCID: PMC4556682 DOI: 10.1371/journal.pone.0135047] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 07/16/2015] [Indexed: 01/06/2023] Open
Abstract
INTRODUCTION Xanthine oxidase (XO) is distributed in mammals largely in the liver and small intestine, but also is highly active in milk where it generates hydrogen peroxide (H2O2). Adult human saliva is low in hypoxanthine and xanthine, the substrates of XO, and high in the lactoperoxidase substrate thiocyanate, but saliva of neonates has not been examined. RESULTS Median concentrations of hypoxanthine and xanthine in neonatal saliva (27 and 19 μM respectively) were ten-fold higher than in adult saliva (2.1 and 1.7 μM). Fresh breastmilk contained 27.3 ± 12.2 μM H2O2 but mixing baby saliva with breastmilk additionally generated >40 μM H2O2, sufficient to inhibit growth of the opportunistic pathogens Staphylococcus aureus and Salmonella spp. Oral peroxidase activity in neonatal saliva was variable but low (median 7 U/L, range 2-449) compared to adults (620 U/L, 48-1348), while peroxidase substrate thiocyanate in neonatal saliva was surprisingly high. Baby but not adult saliva also contained nucleosides and nucleobases that encouraged growth of the commensal bacteria Lactobacillus, but inhibited opportunistic pathogens; these nucleosides/bases may also promote growth of immature gut cells. Transition from neonatal to adult saliva pattern occurred during the weaning period. A survey of saliva from domesticated mammals revealed wide variation in nucleoside/base patterns. DISCUSSION AND CONCLUSION During breast-feeding, baby saliva reacts with breastmilk to produce reactive oxygen species, while simultaneously providing growth-promoting nucleotide precursors. Milk thus plays more than a simply nutritional role in mammals, interacting with infant saliva to produce a potent combination of stimulatory and inhibitory metabolites that regulate early oral-and hence gut-microbiota. Consequently, milk-saliva mixing appears to represent unique biochemical synergism which boosts early innate immunity.
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Affiliation(s)
- Saad S Al-Shehri
- School of Pharmacy, The University of Queensland, Brisbane, Australia; College of Applied Medical Science, Taif University, Taif, Saudi Arabia
| | - Christine L Knox
- Institute of Health and Biomedical Innovation, Faculty of Health, Queensland University of Technology, Brisbane, Australia
| | - Helen G Liley
- Mater Research Institute, Mater Health Services, Brisbane, Australia
| | - David M Cowley
- Mater Research Institute, Mater Health Services, Brisbane, Australia
| | - John R Wright
- School of Veterinary Science, The University of Queensland, Gatton, Australia
| | - Michael G Henman
- Mater Research Institute, Mater Health Services, Brisbane, Australia
| | | | - Bruce G Charles
- School of Pharmacy, The University of Queensland, Brisbane, Australia
| | - Paul N Shaw
- School of Pharmacy, The University of Queensland, Brisbane, Australia
| | - Emma L Sweeney
- Institute of Health and Biomedical Innovation, Faculty of Health, Queensland University of Technology, Brisbane, Australia
| | - John A Duley
- School of Pharmacy, The University of Queensland, Brisbane, Australia; Mater Research Institute, Mater Health Services, Brisbane, Australia
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Shahwar D, Ahmad N, Yasmeen A, Khan MA, Ullah S, Rahman AU. Bioactive constituents from Croton sparsiflorus Morong. Nat Prod Res 2014; 29:274-6. [PMID: 25115768 DOI: 10.1080/14786419.2014.947484] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Whole plant extracts of Croton sparsiflorus in methanol have shown significant enzyme inhibition and antioxidant activities. Bioassay-guided isolation of chloroform fraction at pH 3 resulted in the identification of crotsparinine (1) and crotsparine (2), while sparsiflorine (3) was purified from the chloroform fraction at pH 9. The structures of the compounds were confirmed through spectral analyses (EI-MS, (1)H and (13)C NMR). The isolated compounds 1-3 exhibited remarkable enzyme inhibition activity with IC50 values 27.01 ± 1.1, 22.26 ± 1.0 and 18.02 ± 1.3 μM in xanthine oxidase and 48.42 ± 1.5, 48.05 ± 1.4 and 7.42 ± 1.0 μM in acetylcholine esterase assays, respectively. These compounds also showed potent radical scavenging and reducing properties in DPPH and FRAP assays, respectively. The present results suggest the validity of the traditional uses of C. sparsiflorus in rheumatism and gout. Furthermore, the isolated noraporphine alkaloids can be useful in the treatment of neurodegenerative diseases.
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Affiliation(s)
- Durre Shahwar
- a Research Lab. II, Department of Chemistry , Government College University , Lahore 54000 , Pakistan
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Beyaztaş S, Arslan O. Purification of xanthine oxidase from bovine milk by affinity chromatography with a novel gel. J Enzyme Inhib Med Chem 2014; 30:442-7. [DOI: 10.3109/14756366.2014.943204] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kathriarachchi K, Leus M, Everett DW. Oxidation of aldehydes by xanthine oxidase located on the surface of emulsions and washed milk fat globules. Int Dairy J 2014. [DOI: 10.1016/j.idairyj.2014.03.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Claeys W, Verraes C, Cardoen S, De Block J, Huyghebaert A, Raes K, Dewettinck K, Herman L. Consumption of raw or heated milk from different species: An evaluation of the nutritional and potential health benefits. Food Control 2014. [DOI: 10.1016/j.foodcont.2014.01.045] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Buckow R, Chandry PS, Ng SY, McAuley CM, Swanson BG. Opportunities and challenges in pulsed electric field processing of dairy products. Int Dairy J 2014. [DOI: 10.1016/j.idairyj.2013.09.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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47
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Le TT, Van Camp J, Dewettinck K. Milk Fat Globule Membrane Material. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2014. [DOI: 10.1016/b978-0-444-63294-4.00012-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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Crane JK, Mongiardo KM. Pro-inflammatory effects of uric acid in the gastrointestinal tract. Immunol Invest 2013; 43:255-66. [PMID: 24377830 DOI: 10.3109/08820139.2013.864667] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Uric acid can be generated in the gastrointestinal (GI) tract from the breakdown of nucleotides ingested in the diet or from purines released from host cells as a result of pathogen-induced cell damage. Xanthine oxidase (XO) is the enzyme that converts hypoxanthine or xanthine into uric acid, a reaction that also generates hydrogen peroxide. It has been assumed that the product of XO responsible for the pro-inflammatory effects of this enzyme is hydrogen peroxide. Recent literature on uric acid, however, has indicated that uric acid itself may have biological effects. We tested whether uric acid itself has detectable pro-inflammatory effects using an in vivo model using ligated rabbit intestinal segments ("loops") as well as in vitro assays using cultured cells. Addition of exogenous uric acid increased the influx of heterophils into rabbit intestinal loops, as measured by myeloperoxidase activity. In addition, white blood cells adhered avidly to uric acid crystals, forming large aggregates of cells. Uric acid acts as a leukocyte chemoattractant in the GI tract. The role of uric acid in enteric infections and in non-infectious disorders of the GI tract deserves more attention.
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Affiliation(s)
- John K Crane
- Deparment of Medicine, Division of Infectious Diseases, University at Buffalo , Buffalo, New York , USA
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49
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Le TT, Debyser G, Gilbert W, Struijs K, Van Camp J, Van de Wiele T, Devreese B, Dewettinck K. Distribution and isolation of milk fat globule membrane proteins during dairy processing as revealed by proteomic analysis. Int Dairy J 2013. [DOI: 10.1016/j.idairyj.2013.05.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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50
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Campbell R, Drake M. Invited review: The effect of native and nonnative enzymes on the flavor of dried dairy ingredients. J Dairy Sci 2013; 96:4773-83. [DOI: 10.3168/jds.2013-6598] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Accepted: 05/05/2013] [Indexed: 12/22/2022]
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