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Nunes M, Vlok M, Proal A, Kell DB, Pretorius E. Data-independent LC-MS/MS analysis of ME/CFS plasma reveals a dysregulated coagulation system, endothelial dysfunction, downregulation of complement machinery. Cardiovasc Diabetol 2024; 23:254. [PMID: 39014464 PMCID: PMC11253362 DOI: 10.1186/s12933-024-02315-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 06/16/2024] [Indexed: 07/18/2024] Open
Abstract
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a debilitating chronic condition that is characterized by unresolved fatigue, post-exertion symptom exacerbation (PESE), cognitive dysfunction, orthostatic intolerance, and other symptoms. ME/CFS lacks established clinical biomarkers and requires further elucidation of disease mechanisms. A growing number of studies demonstrate signs of hematological and cardiovascular pathology in ME/CFS cohorts, including hyperactivated platelets, endothelial dysfunction, vascular dysregulation, and anomalous clotting processes. To build on these findings, and to identify potential biomarkers that can be related to pathophysiology, we measured differences in protein expression in platelet-poor plasma (PPP) samples from 15 ME/CFS study participants and 10 controls not previously infected with SARS-CoV-2, using DIA LC-MS/MS. We identified 24 proteins that are significantly increased in the ME/CFS group compared to the controls, and 21 proteins that are significantly downregulated. Proteins related to clotting processes - thrombospondin-1 (important in platelet activation), platelet factor 4, and protein S - were differentially expressed in the ME/CFS group, suggestive of a dysregulated coagulation system and abnormal endothelial function. Complement machinery was also significantly downregulated, including C9 which forms part of the membrane attack complex. Additionally, we identified a significant upregulation of lactotransferrin, protein S100-A9, and an immunoglobulin variant. The findings from this experiment further implicate the coagulation and immune system in ME/CFS, and bring to attention the pathology of or imposed on the endothelium. This study highlights potential systems and proteins that require further research with regards to their contribution to the pathogenesis of ME/CFS, symptom manifestation, and biomarker potential, and also gives insight into the hematological and cardiovascular risk for ME/CFS individuals affected by diabetes mellitus.
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Affiliation(s)
- Massimo Nunes
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 Matieland, Stellenbosch, 7602, South Africa
| | - Mare Vlok
- Central Analytical Facility: Mass Spectrometry, Stellenbosch University, Tygerberg Campus, Room 6054, Clinical Building, Francie Van Zijl Drive Tygerberg, Cape Town, 7505, South Africa
| | - Amy Proal
- PolyBio Research Foundation, 7900 SE 28th ST, Suite 412, Mercer Island, DC, 98040, USA
| | - Douglas B Kell
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 Matieland, Stellenbosch, 7602, South Africa.
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, Faculty of Health and Life Sciences, University of Liverpool, Crown St, Liverpool, L69 7ZB, UK.
- The Novo Nordisk Foundation Centre for Biosustainability, Technical University of Denmark, Building 220, Chemitorvet 200, 2800, Kongens Lyngby, Denmark.
| | - Etheresia Pretorius
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1 Matieland, Stellenbosch, 7602, South Africa.
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, Faculty of Health and Life Sciences, University of Liverpool, Crown St, Liverpool, L69 7ZB, UK.
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Wei M, Liu J, Wang X, Liu X, Jiang L, Jiang Y, Ma Y, Wang J, Yuan H, An X, Song Y, Zhang L. Multi-omics analysis of kidney tissue metabolome and proteome reveals the protective effect of sheep milk against adenine-induced chronic kidney disease in mice. Food Funct 2024; 15:7046-7062. [PMID: 38864415 DOI: 10.1039/d4fo00619d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Chronic kidney disease (CKD) is characterized by impaired renal function and is associated with inflammation, oxidative stress, and fibrosis. Sheep milk contains several bioactive molecules with protective effects against inflammation and oxidative stress. In the current study, we investigated the potential renoprotective effects of sheep milk and the associated mechanisms of action in an adenine-induced CKD murine model. Sheep milk delayed renal chronic inflammation (e.g., significant reduction in levels of inflammatory factors Vcam1, Icam1, Il6, and Tnfa), fibrosis (significant reduction in levels of fibrosis factors Col1a1, Fn1, and Tgfb), oxidative stress (significant increase in levels of antioxidants and decrease in oxidative markers), mineral disorders, and renal injury in adenine-treated mice (e.g. reduced levels of kidney injury markers NGAL and KIM-1). The combined proteomics and metabolomics analyses showed that sheep milk may affect the metabolic processes of several compounds, including proteins, lipids, minerals, and hormones in mice with adenine-induced chronic kidney disease. In addition, it may regulate the expression of fibrosis-related factors and inflammatory factors through the JAK1/STAT3/HIF-1α signaling pathway, thus exerting its renoprotective effects. Therefore, sheep milk may be beneficial for patients with CKD and should be evaluated in preclinical and clinical studies.
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Affiliation(s)
- Mengyao Wei
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shannxi 712100, China.
| | - Jiaxin Liu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shannxi 712100, China.
| | - Xiaofei Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shannxi 712100, China.
| | - Xiaorui Liu
- Division of Laboratory Safety and Services, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Luyao Jiang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shannxi 712100, China.
| | - Yue Jiang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shannxi 712100, China.
| | - Yingtian Ma
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shannxi 712100, China.
| | - Jiangang Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shannxi 712100, China.
| | - Hao Yuan
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shannxi 712100, China.
| | - Xiaopeng An
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shannxi 712100, China.
| | - Yuxuan Song
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shannxi 712100, China.
| | - Lei Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shannxi 712100, China.
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Eker F, Akdaşçi E, Duman H, Yalçıntaş YM, Canbolat AA, Kalkan AE, Karav S, Šamec D. Antimicrobial Properties of Colostrum and Milk. Antibiotics (Basel) 2024; 13:251. [PMID: 38534686 DOI: 10.3390/antibiotics13030251] [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: 01/31/2024] [Revised: 03/07/2024] [Accepted: 03/08/2024] [Indexed: 03/28/2024] Open
Abstract
The growing number of antibiotic resistance genes is putting a strain on the ecosystem and harming human health. In addition, consumers have developed a cautious attitude towards chemical preservatives. Colostrum and milk are excellent sources of antibacterial components that help to strengthen the immunity of the offspring and accelerate the maturation of the immune system. It is possible to study these important defenses of milk and colostrum, such as lactoferrin, lysozyme, immunoglobulins, oligosaccharides, etc., as biotherapeutic agents for the prevention and treatment of numerous infections caused by microbes. Each of these components has different mechanisms and interactions in various places. The compound's mechanisms of action determine where the antibacterial activity appears. The activation of the antibacterial activity of milk and colostrum compounds can start in the infant's mouth during lactation and continue in the gastrointestinal regions. These antibacterial properties possess potential for therapeutic uses. In order to discover new perspectives and methods for the treatment of bacterial infections, additional investigations of the mechanisms of action and potential complexes are required.
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Affiliation(s)
- Furkan Eker
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale 17000, Turkey
| | - Emir Akdaşçi
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale 17000, Turkey
| | - Hatice Duman
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale 17000, Turkey
| | - Yalçın Mert Yalçıntaş
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale 17000, Turkey
| | - Ahmet Alperen Canbolat
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale 17000, Turkey
| | - Arda Erkan Kalkan
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale 17000, Turkey
| | - Sercan Karav
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale 17000, Turkey
| | - Dunja Šamec
- Department of Food Technology, University North, Trg Dr. Žarka Dolinara 1, 48000 Koprivnica, Croatia
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Yew WC, Young GR, Nelson A, Cheung W, Stewart CJ, Bridge SH, Granger C, Berrington JE, Embleton ND, Smith DL. The core phageome and its interrelationship with preterm human milk lipids. Cell Rep 2023; 42:113373. [PMID: 37967008 DOI: 10.1016/j.celrep.2023.113373] [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: 03/24/2023] [Revised: 08/09/2023] [Accepted: 10/18/2023] [Indexed: 11/17/2023] Open
Abstract
Phages and lipids in human milk (HM) may benefit preterm infant health by preventing gastrointestinal pathobiont overgrowth and microbiome modulation. Lipid association may promote vertical transmission of phages to the infant. Despite this, interrelationships between lipids and phages are poorly characterized in preterm HM. Shotgun metagenomics and untargeted lipidomics of phage and lipid profiles from 99 preterm HM samples reveals that phages are abundant and prevalent from the first week and throughout the first 100 days of lactation. Phage-host richness of preterm HM increases longitudinally. Core phage communities characterized by Staphylococcus- and Propionibacterium-infecting phages are significantly correlated with long-chain fatty acid abundances over lactational age. We report here a phage-lipid interaction in preterm HM, highlighting the potential importance of phage carriage in preterm HM. These results reveal possible strategies for phage carriage in HM and their importance in early-life microbiota development.
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Affiliation(s)
- Wen C Yew
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK
| | - Gregory R Young
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK; Hub for Biotechnology in the Built Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK
| | - Andrew Nelson
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK
| | - William Cheung
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK
| | - Christopher J Stewart
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
| | - Simon H Bridge
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK; Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
| | - Claire Granger
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; Neonatal Medicine, Newcastle upon Tyne Hospitals National Health Service Foundation Trust, Newcastle upon Tyne NE7 7DN, UK
| | - Janet E Berrington
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; Neonatal Medicine, Newcastle upon Tyne Hospitals National Health Service Foundation Trust, Newcastle upon Tyne NE7 7DN, UK
| | - Nicholas D Embleton
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK; Population Health Sciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
| | - Darren L Smith
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK; Hub for Biotechnology in the Built Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK.
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Nadi WG, Taher EM, Awad AAN, Ahmed LI. Lactoferrin's potential application in enhancing yoghurt's microbial and sensory qualities, with emphasis on the starter culture activity. J DAIRY RES 2023; 90:403-408. [PMID: 38186209 DOI: 10.1017/s0022029923000675] [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] [Indexed: 01/09/2024]
Abstract
This research paper aimed to examine the antibacterial activity of lactoferrin (LF) as a potential natural alternative in the dairy sector, by measuring its minimum inhibitory concentration (MIC) against a number of common food-borne pathogens as well as Pseudomonas aeruginosa, one of the major dairy product spoiling microorganisms. Additionally, a viability experiment was applied to laboratory-manufactured set yoghurt to assess its impact on the activity of starter culture, sensory properties and STEC survivability. The findings demonstrated that LF exhibited significant antimicrobial activity, particularly against E. coli and S. typhimurium with MIC values of 0.0001 and 0.01 mg/ml, respectively. However, P. aeruginosa and B. cereus were quite resistant to LF requiring higher concentrations for MIC (2.5 mg/ml). By the third day of storage, LF at 0.0001 and 0.001 mg/ml significantly reduced the survivability of Shiga toxin-producing E. coli STEC by 70 and 91.6%, respectively, in the lab-manufactured yoghurt. Furthermore, LF enhanced the sensory properties of fortified yoghurt with a statistically significant difference in comparison to the control yoghurt group. There was no interference with the activity of the starter culture throughout the manufacturing process and the storage period. In conclusion, the potent antimicrobial effect of LF opens a new avenue for the dairy industry's potential applications of LF as a natural preservative without negatively influencing the sensory properties and starter culture activity of fermented products.
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Affiliation(s)
- Walaa G Nadi
- Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Cairo University, 12211, Giza, Egypt
| | - Eman M Taher
- Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Cairo University, 12211, Giza, Egypt
| | - Abeer Abdel Nasser Awad
- Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Cairo University, 12211, Giza, Egypt
| | - Lamiaa Ibrahim Ahmed
- Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Cairo University, 12211, Giza, Egypt
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6
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Abdelnour SA, Ghazanfar S, Abdel-Hamid M, Abdel-Latif HMR, Zhang Z, Naiel MAE. Therapeutic uses and applications of bovine lactoferrin in aquatic animal medicine: an overview. Vet Res Commun 2023; 47:1015-1029. [PMID: 36658448 PMCID: PMC10485086 DOI: 10.1007/s11259-022-10060-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 12/19/2022] [Indexed: 01/21/2023]
Abstract
Aquaculture is an important food sector throughout the globe because of its importance in ensuring the availability of nutritious and safe food for human beings. In recent years, this sector has been challenged with several obstacles especially the emergence of infectious disease outbreaks. Various treatment and control aspects, including antibiotics, antiseptics, and other anti-microbial agents, have been used to treat farmed fish and shrimp against diseases. Nonetheless, these medications have been prohibited and banned in many countries because of the development of antimicrobial-resistant bacterial strains, the accumulation of residues in the flesh of farmed fish and shrimp, and their environmental threats to aquatic ecosystems. Therefore, scientists and researchers have concentrated their research on finding natural and safe products to control disease outbreaks. From these natural products, bovine lactoferrin can be utilized as a functional feed supplement. Bovine lactoferrin is a multi-functional glycoprotein applied in various industries, like food preservation, and numerous medications, due to its non-toxic and ecological features. Recent research has proposed multiple advantages and benefits of using bovine lactoferrin in aquaculture. Reports showed its potential ability to enhance growth, reduce mortalities, regulate iron metabolism, decrease disease outbreaks, stimulate the antioxidant defense system, and recuperate the overall health conditions of the treated fish and shrimp. Besides, bovine lactoferrin can be considered as a safe antibiotic alternative and a unique therapeutic agent to decrease the negative impacts of infectious diseases. These features can be attributed to its well-known antibacterial, anti-parasitic, anti-inflammatory, immunostimulatory, and antioxidant capabilities. This literature review will highlight the implications of bovine lactoferrin in aquaculture, particularly highlighting its therapeutic features and ability to promote immunological defensive pathways in fish. The information included in this article would be valuable for further research studies to improve aquaculture's sustainability and the functionality of aquafeeds.
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Affiliation(s)
- Sameh A Abdelnour
- Department of Animal Production, Faculty of Agriculture, Zagazig University, 44519, Zagazig, Egypt
| | - Shakira Ghazanfar
- National Institute for Genomics Advanced and Biotechnology (NIGAB), National Agricultural Research Centre, Park Road, 45500, Islamabad, Pakistan
| | - Mahmoud Abdel-Hamid
- Dairy Science Department, Faculty of Agriculture, Cairo University, 12613, Giza, Egypt
| | - Hany M R Abdel-Latif
- Department of Poultry and Fish Diseases, Faculty of Veterinary Medicine, Alexandria University, 22758, Alexandria, Egypt
| | - Zhaowei Zhang
- National Reference Laboratory for Agricultural Testing (Biotoxin), Key Laboratory of Biology and Genetic Improvement of Oil Crops, Key Laboratory of Detection for Mycotoxins, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, 430062, Wuhan, PR China
| | - Mohammed A E Naiel
- Department of Animal Production, Faculty of Agriculture, Zagazig University, 44519, Zagazig, Egypt.
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Liu ZS, Chen PW. Featured Prebiotic Agent: The Roles and Mechanisms of Direct and Indirect Prebiotic Activities of Lactoferrin and Its Application in Disease Control. Nutrients 2023; 15:2759. [PMID: 37375663 DOI: 10.3390/nu15122759] [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: 05/10/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Lactoferrin (LF) is a glycoprotein found in mammalian milk, and lactoferricin is a peptide derived from LF hydrolysate. Both LF and lactoferricin (LFcin) have diverse functions that could benefit mammals. Bovine LF (BLF) and BLFcin exhibit a wide range of antimicrobial activities, but most probiotic strains are relatively resistant to their antibacterial effects. BLF and BLF hydrolysate can promote the growth of specific probiotics depending on the culture conditions, the dose of BLF or BLF-related peptides, and the probiotic strains used. BLF supplementation has been shown to modulate several central molecular pathways or genes in Lacticaseibacillus rhamnosus GG under cold conditions, which may explain the prebiotic roles of BLF. LF alone or in combination with selected probiotics can help control bacterial infections or metabolic disorders, both in animal studies and in human clinical trials. Various LF-expressing probiotics, including those expressing BLF, human LF, or porcine LF, have been developed to facilitate the combination of LFs with specific probiotics. Supplementation with LF-expressing probiotics has positive effects in animal studies. Interestingly, inactivated LF-expressing probiotics significantly improved diet-induced nonalcoholic fatty liver disease (NAFLD) in a mouse model. This review highlights the accumulated evidence supporting the use of LF in combination with selected LF-resistant probiotics or LF-expressing probiotics in the field.
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Affiliation(s)
- Zhen-Shu Liu
- Chronic Diseases and Health Promotion Research Center, Chang Gung University of Science and Technology, Chiayi 61363, Taiwan
- Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Po-Wen Chen
- Department of Veterinary Medicine, National Chung Hsing University, Taichung 40249, Taiwan
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Mottola S, Viscusi G, Iannone G, Belvedere R, Petrella A, De Marco I, Gorrasi G. Supercritical Impregnation of Mesoglycan and Lactoferrin on Polyurethane Electrospun Fibers for Wound Healing Applications. Int J Mol Sci 2023; 24:ijms24119269. [PMID: 37298221 DOI: 10.3390/ijms24119269] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 05/19/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
Fibrous membranes of thermoplastic polyurethane (TPU) were fabricated through a uni-axial electrospinning process. Fibers were then separately charged with two pharmacological agents, mesoglycan (MSG) and lactoferrin (LF), by supercritical CO2 impregnation. Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS) analysis proved the formation of a micrometric structure with a homogeneous distribution of mesoglycan and lactoferrin. Besides, the degree of retention is calculated in four liquid media with different pHs. At the same time, angle contact analysis proved the formation of a hydrophobic membrane loaded with MSG and a hydrophilic LF-loaded one. The impregnation kinetics demonstrated a maximum loaded amount equal to 0.18 ± 0.20% and 0.07 ± 0.05% for MSG and LT, respectively. In vitro tests were performed using a Franz diffusion cell to simulate the contact with the human skin. The release of MSG reaches a plateau after about 28 h while LF release leveled off after 15 h. The in vitro compatibility of electrospun membranes has been evaluated on HaCaT and BJ cell lines, as human keratinocytes and fibroblasts, respectively. The reported data proved the potential application of fabricated membranes for wound healing.
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Affiliation(s)
- Stefania Mottola
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
| | - Gianluca Viscusi
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
| | - Giovanna Iannone
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
| | - Raffaella Belvedere
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
| | - Antonello Petrella
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
| | - Iolanda De Marco
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
- Research Centre for Biomaterials BIONAM, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
| | - Giuliana Gorrasi
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
- Research Centre for Biomaterials BIONAM, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
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Pall E, Roman A, Olah D, Beteg FI, Cenariu M, Spînu M. Enhanced Bioactive Potential of Functionalized Injectable Platelet-Rich Plasma. Molecules 2023; 28:molecules28041943. [PMID: 36838930 PMCID: PMC9967773 DOI: 10.3390/molecules28041943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/13/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
Injectable platelet-rich fibrin (iPRF) is a frequently used platelet concentrate used for various medical purposes both in veterinary and human medicine due to the regenerative potential of hard and soft tissues, and also because of its antimicrobial effectiveness. This in vitro study was carried out to assess the cumulative antimicrobial and antibiofilm effect of iPRF functionalized with a multifunctional glycoprotein, human lactoferrin (Lf). Thus, the ability to potentiate cell proliferation was tested on keratinocytes and evaluated by the CCK8 test. The combinations of iPRF and Lf induced an increase in the proliferation rate after 24 h. The average cell viability of treated cultures (all nine variants) was 102.87% ± 1.00, and the growth tendency was maintained even at 48 h. The highest proliferation rate was observed in cultures treated with 7% iPRF in combination with 50 µg/mL of Lf, with an average viability of 102.40% ± 0.80. The antibacterial and antibiofilm activity of iPRF, of human lactoferrin and their combination were tested by agar-well diffusion (Kirby-Bauer assay), broth microdilution, and crystal violet assay against five reference bacterial strains. iPRF showed antimicrobial and antibiofilm potential, but with variations depending on the tested bacterial strain. The global analysis of the results indicates an increased antimicrobial potential at the highest concentration of Lf mixed with iPRF. The study findings confirmed the hypothesized enhanced bioactive properties of functionalized iPRF against both Gram-positive and Gram-negative biofilm-producing bacteria. These findings could be further applied, but additional studies are needed to evaluate the mechanisms that are involved in these specific bioactive properties.
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Affiliation(s)
- Emoke Pall
- Department of Clinical Sciences, University of Agricultural Sciences and Veterinary Medicine, 400374 Cluj-Napoca, Romania
- Correspondence: (E.P.); (M.C.)
| | - Alexandra Roman
- Department of Periodontology, Faculty of Dental Medicine, Iuliu Haţieganu University of Medicine and Pharmacy, 400347 Cluj-Napoca, Romania
| | - Diana Olah
- Department of Clinical Sciences, University of Agricultural Sciences and Veterinary Medicine, 400374 Cluj-Napoca, Romania
| | - Florin Ioan Beteg
- Department of Clinical Sciences, University of Agricultural Sciences and Veterinary Medicine, 400374 Cluj-Napoca, Romania
| | - Mihai Cenariu
- Department of Clinical Sciences, University of Agricultural Sciences and Veterinary Medicine, 400374 Cluj-Napoca, Romania
- Correspondence: (E.P.); (M.C.)
| | - Marina Spînu
- Department of Clinical Sciences, University of Agricultural Sciences and Veterinary Medicine, 400374 Cluj-Napoca, Romania
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Embleton ND, Berrington JE. Milk-Based Bionutrient Trials to Improve Outcomes in Preterm Infants: Challenges and Opportunities. Am J Perinatol 2022; 39:S68-S72. [PMID: 36470294 DOI: 10.1055/s-0042-1758857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Bionutrients (or immunonutrients) are dietary components present in milk, or supplements that could be added to milk diets, that impact health and disease. With few exceptions, most of these are present in human breastmilk and the majority are also present in amniotic fluid. STUDY DESIGN Bionutrients can be proteins and peptides including enzymes, hormones, immunoglobulins, and growth factors and can also be molecules such as human milk oligosaccharides, amino acids, or lipids such as docosahexaenoic acid. Many of these have ancient origins, are found in other species, and existed before mammalian lactation evolved. Bionutrients may act in diverse ways when administered enterally: they may impact gut bacterial communities or epithelial cell metabolism, or they may pass into the lamina propria where they interact with the gut and systemic immune systems. Clinical trials have often used bovine analogs such as lactoferrin or may use artificially synthesized or recombinant compounds including insulin, bile salt stimulated lipase, or oligosaccharides. RESULTS Challenges arise because the bioactivity of proteins, such as lactoferrin, may be affected by processing and pasteurization meaning that the impacts of commercial products may differ. The challenge of determining the optimal bioactivity of any single preparation may be even greater in complex compounds such as milk fat globule membrane. It is also possible that bioactivity is affected by the milk matrix, that is, may differ between formula and human milk. CONCLUSION Finally, it is important to appreciate that nutrients do not function in isolation, and most will not act like drugs, that is, they may take several days or longer to exert an affect. KEY POINTS · Breastmilk contains high concentrations of bionutrients and provides more than macro- and micronutrients.. · Bionutrients can be proteins (e.g. enzymes, hormones, or immunoglobulins) or molecules (e.g. human milk oligosaccharides or amino acids).. · Bionutrients can be added to milk feeds but high quality trials are needed..
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Affiliation(s)
- Nicholas D Embleton
- Newcastle Hospitals National Health Service Trust, Newcastle upon Tyne, United Kingdom.,Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Janet E Berrington
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom.,Translational Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
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Bolat E, Eker F, Kaplan M, Duman H, Arslan A, Saritaş S, Şahutoğlu AS, Karav S. Lactoferrin for COVID-19 prevention, treatment, and recovery. Front Nutr 2022; 9:992733. [PMID: 36419551 PMCID: PMC9676636 DOI: 10.3389/fnut.2022.992733] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 09/07/2022] [Indexed: 09/22/2023] Open
Abstract
Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2), a unique beta-coronavirus, has caused the most serious outbreak of the last century at the global level. SARS-CoV-2 infections were firstly reported in the city of Wuhan in China in 2019 and this new disease was named COVID-19 by World Health Organization (WHO). As this novel disease can easily be transmitted from one individual to another via respiratory droplets, many nations around the world have taken several precautions regarding the reduction in social activities and quarantine for the limitation of the COVID-19 transmission. SARS-CoV-2 is known to cause complications that may include pneumonia, acute respiratory distress syndrome (ARDS), multi-organ failure, septic shock, and death. To prevent and treat COVID-19, some significant studies have been conducted since the outbreak. One of the most noticeable therapeutic approaches is related to a multifunctional protein, lactoferrin. Lactoferrin (Lf) is an 80 kDa cationic glycoprotein that has a great range of benefits from improving the immunity to antiviral effects due to its unique characteristics such as the iron-binding ability. This review summarizes the characteristics of SARS-CoV-2 and the potential applications of Lf for the prevention, treatment, and recovery of COVID-19.
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Affiliation(s)
- Ecem Bolat
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Furkan Eker
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Merve Kaplan
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Hatice Duman
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Ayşenur Arslan
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Sümeyye Saritaş
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | | | - Sercan Karav
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
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12
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R. M. Metawea O, Teleb M, Haiba NS, Elzoghby AO, Khafaga AF, Noreldin AE, Khattab SN, Khalil HH. Folic acid-poly(N-isopropylacrylamide-maltodextrin) nanohydrogels a novel thermo-/pH-responsive polymer for resveratrol breast cancer targeted therapy. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Campos de Paula HM, Coelho YL, Benhame de Castro AS, Marques IA, Hudson EA, de Paula Rezende J, Dos Santos Pires AC, Mendes da Silva LH. Dynamics and energetics of bovine lactoferrin and phenylmethane dyes interaction followed by surface plasmon resonance. Colloids Surf B Biointerfaces 2022; 219:112794. [PMID: 36162180 DOI: 10.1016/j.colsurfb.2022.112794] [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: 03/21/2022] [Revised: 08/10/2022] [Accepted: 08/21/2022] [Indexed: 10/31/2022]
Abstract
Although toxic and dangerous, Phenylmethane (PhM) dyes have a variety of medicinal functions. To optimize the use of these dyes, it is essential to understand their interaction mechanism with proteins. Through surface plasmon resonance, we investigated the kinetics and thermodynamics of interaction between bovine lactoferrin (BLF) and PhM dyes at pH 7.4, which allowed elucidate the effect of the dyes' functional groups on the binding process. Negative ΔG° revealed that at thermodynamic equilibrium the formed [BLF-PhM]° complex was more stable than the free BLF and PhM molecules. The increase in the number of methyl groups in the PhM structure led to an increase in the rates of association (ka) and dissociation (kd) and the binding constant (Kb). A similar effect was observed when comparing methyl violet B (MVB) and methyl violet 6 B (MV6B), in which the charged MV6B structure promoted an increase in the ka, kd, and Kb values. By contrast, an increase in the number of phenyl groups (2-3 rings) led to a decrease in the Kb values. The [BLF-PhM]° formation was entropically driven, indicating that hydrophobic interactions are critical for stabilizing these complexes These results are beneficial for understanding the molecular dynamics of protein-dye interactions.
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Affiliation(s)
| | - Yara Luiza Coelho
- Colloidal, Macromolecular and Green Chemistry (QUIVECOM), Chemistry Department, Brazil; Chemistry Institute, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, n° 700, Alfenas, MG 37130000, Brazil
| | | | | | - Eliara Acipreste Hudson
- Applied Molecular Thermodynamic (THERMA), Food Technology Department, Federal University of Viçosa, Av. PH Rolfs, s/n, Viçosa, MG 36570-900, Brazil
| | - Jaqueline de Paula Rezende
- Applied Molecular Thermodynamic (THERMA), Food Technology Department, Federal University of Viçosa, Av. PH Rolfs, s/n, Viçosa, MG 36570-900, Brazil; Food Science Department, Federal University of Lavras, Campus Universitario, Lavras, MG 37200000, Brazil
| | - Ana Clarissa Dos Santos Pires
- Applied Molecular Thermodynamic (THERMA), Food Technology Department, Federal University of Viçosa, Av. PH Rolfs, s/n, Viçosa, MG 36570-900, Brazil
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14
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The role of lactoferrin in atherosclerosis. Biometals 2022; 36:509-519. [PMID: 36053470 DOI: 10.1007/s10534-022-00441-1] [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: 06/22/2022] [Accepted: 08/24/2022] [Indexed: 11/02/2022]
Abstract
Atherosclerosis (AS) is a common pathological basis for many cardiovascular diseases (CVDs) and result in high mortality and immense health and economic burdens worldwide. Early prevention, diagnosis, and treatment are promising approaches for stemming the development and progression of AS. Lactoferrin (Lf) is an iron-binding glycoprotein belonging to the transferrin family. It is widely found in body fluids such as digestive tract fluids, tears, and milk. Lf possesses anti-inflammatory, antibacterial, immunoregulatory, antioxidant and many other physiological functions. The serum Lf level is reportedly associated with the risk of AS and AS-related CVDs. Lf administration is closely involved in several mechanisms, including cholesterol metabolism, foam cell formation, ICAM-1 expression, homocysteine and leptin levels, anti-inflammatory and antioxidant function. Moreover, Lf has also been applied in the sythesis of magnetic resonance imaging (MRI) contrast agents to detect AS. Lf plays an important role in AS and may therefore be used in its diagnosis and treatment. Thus, this article aims to review the association between Lf and the risk of AS and AS-related CVDs, the mechanisms of Lf administration on AS, and its potential application in AS diagnosis.
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15
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Lactoferrin network with MC3T3-E1 cell proliferation, auxiliary mineralization, antibacterial functions: A multifunctional coating for biofunctionalization of implant surfaces. Colloids Surf B Biointerfaces 2022; 216:112598. [PMID: 35636326 DOI: 10.1016/j.colsurfb.2022.112598] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 04/27/2022] [Accepted: 05/22/2022] [Indexed: 12/24/2022]
Abstract
Developing biocompatible, low-immunoreactive, and antibacterial implants are challenging yet fundamental to osteosynthesis. In this study, mineralization-stimulative and antibacterial networking nanostructures are assembled via amyloid-like aggregation of lactoferrin (LF) triggered by reducing the intramolecular disulfide bonds. Due to the adhesive property of their rich β-sheet architecture, the LF networks are amenable to the deposition upon the surface of various implant materials, functionalizing the implants with cell-proliferative, mineralization-stimulative, and antibacterial properties. Specifically, the abundant functional groups and amino acids exposed on the surface of LF networks provide abundant functional microdomains for subsequent mineralization of different forms of calcium ions and promote the formation of hydroxyapatite (HAp) crystals in simulated body fluids. We further demonstrate that the LF network inherits the innate antibacterial properties of LF and exerts a synergistic antibacterial ability with surface-enriched positively charged and hydrophobic amino acid residues, disrupting bacterial biofilm formation, enhancing microbial cell wall perturbation, and ultimately leading to microbial death. The results underscore the feasibility of the LF network as a multifunctional coating on bioscaffold surfaces, which may provide insight into its future applications in next-generation artificial bone implants with bacterial/biofilm clearance and bone tissue remodeling capabilities.
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16
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Protective effect of bovine lactoferrin against Cronobacter sakazakii in human intestinal Caco-2/TC7 cells. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2022.105428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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17
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Recombinant Enterococcus faecium Expressing Porcine Lactoferricin Exerts Bactericidal Effects and Protects Against Enterotoxigenic Escherichia coli in Mice. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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Zeinali LI, Giuliano S, Lakshminrusimha S, Underwood MA. Intestinal Dysbiosis in the Infant and the Future of Lacto-Engineering to Shape the Developing Intestinal Microbiome. Clin Ther 2021; 44:193-214.e1. [PMID: 34922744 DOI: 10.1016/j.clinthera.2021.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 11/06/2021] [Accepted: 11/12/2021] [Indexed: 12/16/2022]
Abstract
PURPOSE The goal of this study was to review the role of human milk in shaping the infant intestinal microbiota and the potential of human milk bioactive molecules to reverse trends of increasing intestinal dysbiosis and dysbiosis-associated diseases. METHODS This narrative review was based on recent and historic literature. FINDINGS Human milk immunoglobulins, oligosaccharides, lactoferrin, lysozyme, milk fat globule membranes, and bile salt-stimulating lipase are complex multifunctional bioactive molecules that, among other important functions, shape the composition of the infant intestinal microbiota. IMPLICATIONS The co-evolution of human milk components and human milk-consuming commensal anaerobes many thousands of years ago resulted in a stable low-diversity infant microbiota. Over the past century, the introduction of antibiotics and modern hygiene practices plus changes in the care of newborns have led to significant alterations in the intestinal microbiota, with associated increases in risk of dysbiosis-associated disease. A better understanding of mechanisms by which human milk shapes the intestinal microbiota of the infant during a vulnerable period of development of the immune system is needed to alter the current trajectory and decrease intestinal dysbiosis and associated diseases.
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Affiliation(s)
- Lida I Zeinali
- Department of Pediatrics, UC Davis School of Medicine, Sacramento, CA, USA
| | | | | | - Mark A Underwood
- Department of Pediatrics, UC Davis School of Medicine, Sacramento, CA, USA.
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Verduci E, Salvatore S, Bresesti I, Di Profio E, Pendezza E, Bosetti A, Agosti M, Zuccotti GV, D’Auria E. Semi-Elemental and Elemental Formulas for Enteral Nutrition in Infants and Children with Medical Complexity-Thinking about Cow's Milk Allergy and Beyond. Nutrients 2021; 13:4230. [PMID: 34959782 PMCID: PMC8707725 DOI: 10.3390/nu13124230] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 11/18/2021] [Accepted: 11/24/2021] [Indexed: 01/24/2023] Open
Abstract
Children with medical complexities, such as multi-system disorders and/or neurological impairments, often experience feeding difficulties and need enteral nutrition. They frequently have impaired motility and digestive-absorbing functions related to their underlying condition. If a cow's milk allergy (CMA) occurs as a comorbidity, it is often misdiagnosed, due to the symptoms' overlap. Many of the commercialized mixtures intended for enteral nutrition are composed of partially hydrolyzed cow's milk proteins, which are not suitable for the treatment of CMA; thus, the exclusion of a concomitant CMA is mandatory in these patients for obtaining symptoms relief. In this review, we focus on the use of elemental and semi-elemental formulas in children with neurological diseases and in preterm infants as clinical "models" of medical complexity. In children with neurodisabilities, when gastrointestinal symptoms persist despite the use of specific enteral formula, or in cases of respiratory and/or dermatological symptoms, CMA should always be considered. If diagnosis is confirmed, only an extensively hydrolyzed or amino-acid based formula, or, as an alternative, extensively hydrolyzed nutritionally adequate formulas derived from rice or soy, should be used. Currently, enteral formulas tailored to the specific needs of preterm infants and children with neurological impairment presenting concomitant CMA have not been marketed yet. For the proper monitoring of the health status of patients with medical complexity, multidisciplinary evaluation and involvement of the nutritional team should be promoted.
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Affiliation(s)
- Elvira Verduci
- Department of Health Sciences, University of Milan, 20146 Milan, Italy
- Department of Pediatrics, Vittore Buzzi Children’s Hospital, 20154 Milan, Italy; (E.D.P.); (E.P.); (A.B.); (G.V.Z.); (E.D.)
| | - Silvia Salvatore
- Department of Medicine and Surgery, Pediatric and Neonatology Units, Hospital “F. Del Ponte”, University of Insubria, 21100 Varese, Italy; (S.S.); (I.B.); (M.A.)
| | - Ilia Bresesti
- Department of Medicine and Surgery, Pediatric and Neonatology Units, Hospital “F. Del Ponte”, University of Insubria, 21100 Varese, Italy; (S.S.); (I.B.); (M.A.)
| | - Elisabetta Di Profio
- Department of Pediatrics, Vittore Buzzi Children’s Hospital, 20154 Milan, Italy; (E.D.P.); (E.P.); (A.B.); (G.V.Z.); (E.D.)
- Department of Animal Sciences for Health, Animal Production and Food Safety, University of Milan, 20133 Milan, Italy
| | - Erica Pendezza
- Department of Pediatrics, Vittore Buzzi Children’s Hospital, 20154 Milan, Italy; (E.D.P.); (E.P.); (A.B.); (G.V.Z.); (E.D.)
| | - Alessandra Bosetti
- Department of Pediatrics, Vittore Buzzi Children’s Hospital, 20154 Milan, Italy; (E.D.P.); (E.P.); (A.B.); (G.V.Z.); (E.D.)
| | - Massimo Agosti
- Department of Medicine and Surgery, Pediatric and Neonatology Units, Hospital “F. Del Ponte”, University of Insubria, 21100 Varese, Italy; (S.S.); (I.B.); (M.A.)
| | - Gian Vincenzo Zuccotti
- Department of Pediatrics, Vittore Buzzi Children’s Hospital, 20154 Milan, Italy; (E.D.P.); (E.P.); (A.B.); (G.V.Z.); (E.D.)
- Department of Biomedical and Clinical Sciences “L. Sacco”, University of Milan, 20157 Milan, Italy
- Pediatric Clinical Research Center Fondazione Romeo ed EnricaInvernizzi, University of Milan, 20157 Milan, Italy
| | - Enza D’Auria
- Department of Pediatrics, Vittore Buzzi Children’s Hospital, 20154 Milan, Italy; (E.D.P.); (E.P.); (A.B.); (G.V.Z.); (E.D.)
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21
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Pereshein AV, Kuznetsova SV, Shevantaeva ON. On the Nonspecific Resistance in Burn Injury: Pathophysiological Aspects (Review). Sovrem Tekhnologii Med 2021; 12:84-93. [PMID: 34795984 PMCID: PMC8596251 DOI: 10.17691/stm2020.12.3.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Indexed: 11/14/2022] Open
Abstract
An analysis of nonspecific resistance in burn patients is conducted. The role of subpopulations of neutrophils and monocytes/ macrophages in severe burn injury is discussed. The significance of blood cells for the burn-induced immune dysfunction, susceptibility to sepsis and multiple organ failure is underscored. The involvement of secondary complications in the development of morbidity and mortality in patients with burn injury is shown. New approaches to identifying individuals with a risk of adverse outcome are considered.
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Affiliation(s)
- A V Pereshein
- Assistant, Department of Pathological Physiology; Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod, 603005, Russia
| | - S V Kuznetsova
- Associate Professor, Department of Pathological Physiology; Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod, 603005, Russia
| | - O N Shevantaeva
- Professor, Department of Pathological Physiology Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod, 603005, Russia
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22
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El-Asheer OM, Ahmed AG, Hafez ZAA, Dahpy MA, Soliman AA. Lactoferrin Efficacy versus Ferrous Sulfate in Treatment of Children with Iron Deficiency Anemia. JOURNAL OF CHILD SCIENCE 2021. [DOI: 10.1055/s-0041-1731073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractLactoferrin (LF) is an iron-binding globular glycoprotein that is structurally and chemically similar to serum transferrin. Many studies have been done to evaluate the effect of oral LF administration on iron deficiency anemia (IDA) with controversial results. This study was designed to compare the efficacy of LF versus oral ferrous sulfate (OFS) therapy in the treatment of children with IDA. A significant increase in mean hemoglobin and serum iron concentrations was noted in the group that received oral bovine LF (11.06 ± 0.96 and 42.79 ± 6.14, respectively) versus the group that received OFS (10.24 ± 0.57 and 28.94 ± 5.05, respectively, with p < 0.001 for each) after 30 days of the treatment with fewer side effects (9.3 vs. 33.3% with p = 0.043). Oral bovine LF is a more effective and safer alternative in treating iron deficiency and IDA compared with OFS with clinical benefits of fewer side effects and better patient compliance.
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Affiliation(s)
| | - Ahmed Gaber Ahmed
- Pediatric Department, Faculty of Medicine, Assiut University, Asyut, Egypt
| | | | - Marwa AbdelHafiz Dahpy
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Assiut University, Asyut, Egypt
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23
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Belvedere R, Pessolano E, Novizio N, Tosco A, Eletto D, Porta A, Filippelli A, Petrella F, Petrella A. The promising pro-healing role of the association of mesoglycan and lactoferrin on skin lesions. Eur J Pharm Sci 2021; 163:105886. [PMID: 34022411 DOI: 10.1016/j.ejps.2021.105886] [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: 03/19/2021] [Revised: 05/10/2021] [Accepted: 05/14/2021] [Indexed: 11/26/2022]
Abstract
Skin wound repair represents an important topic for the therapeutic challenges. Many molecules are commonly used as active principles of topical devices to induce the correct tissue regeneration. Among these molecules, mesoglycan, a mixture of glycosaminoglycans, and the lactoferrin have recently aroused interest. Here, for the first time, we used mesoglycan/lactoferrin to treat the cell populations mainly involved in wound healing. We showed that human keratinocytes, fibroblasts and endothelial cells migrate and invade more rapidly when treated with the association. Moreover, we found that mesoglycan/lactoferrin, are able to trigger the differentiation process of keratinocytes, the switch of the fibroblasts into myofibroblasts, the acquisition of a mesenchymal phenotype for the endothelial cells which, in this way, start to form the capillary-like structures. Additionally, we proved that the well known antimicrobial behavior of lactoferrin encourages the inhibition of S. aureus and P. aeruginosa biofilm formation by the whole association, providing an appealing feature for this formulation. Finally, by the in vivo analysis, we showed that the mesoglycan/lactoferrin favors the closure of skin wounds performed on the mice back. Beside the decrease of the lesion diameters, by a confocal analysis of mice biopsies we found that the use of the association strongly promote cell activation underlying the correct tissue regeneration. These results encourage to further investigation aiming the development of a new topical patch that includes this association.
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Affiliation(s)
| | | | - Nunzia Novizio
- Department of Pharmacy, University of Salerno, Fisciano (SA) Italy
| | - Alessandra Tosco
- Department of Pharmacy, University of Salerno, Fisciano (SA) Italy
| | - Daniela Eletto
- Department of Pharmacy, University of Salerno, Fisciano (SA) Italy
| | - Amalia Porta
- Department of Pharmacy, University of Salerno, Fisciano (SA) Italy
| | - Amelia Filippelli
- Department of Medicine, Surgery and Dentistry, University of Salerno, Baronissi (SA), Italy
| | - Francesco Petrella
- Primary Care - Wound Care Service, Health Local Agency Naples 3 South, Via Libertà 42, 80055 Portici (Napoli), Italy
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He X, Yuan T, Jiang X, Yang H, Zheng CL. Effects of contaminated surface water and groundwater from a rare earth mining area on the biology and the physiology of Sprague-Dawley rats. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 761:144123. [PMID: 33360126 DOI: 10.1016/j.scitotenv.2020.144123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 11/21/2020] [Accepted: 11/21/2020] [Indexed: 06/12/2023]
Abstract
Previous studies have shown that an effective damage detection method for model rats from macro individual to micro cellular, was applied to assess the groundwater quality from rare earth metals tailings seepage. To determine whether it is universal method for measuring the toxicological damage caused by contaminated water around other mining areas to organisms at the organ-tissue-cell-chromosome-gene level. In this study, a rare earth mining area in North China was used as research base. Firstly, the core pollution factors in surface water and groundwater from five different sites were analyzed. Then, the degree of toxicological damage to Sprague-Dawley (SD) rats caused by contaminated water were systematically assessed using biological methods. Finally, the possible molecular mechanism of toxicological damage was further discussed. The synthesis results showed that the main pollution factors were some metal elements (Mn, Zn, Co, Ni) and rare earth elements (Sc, Nb, La, Ce, Pr, Dy and Y), which might cause significant DNA genetic damage to SD rats. Further, differential gene expression profile showed that DNA damage-inducible genes (Gadd45g and Ddit4), immunity-related genes (Mpo, Slpi and Elane) and two cancer-related genes (Mmp8 and Ltf) were used as a new prognostic and predictive biomarker for biosafety assessment. Therefore, this study provides a possible molecular mechanism for the toxicological damage, and also it provides a universal method to scientifically and effectively evaluate the water pollution risk for other mining areas.
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Affiliation(s)
- Xiaoying He
- School of Life Science and Technology, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Ting Yuan
- School of Energy and Environment, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Xinying Jiang
- School of Life Science and Technology, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Hui Yang
- School of Life Science and Technology, Inner Mongolia University of Science & Technology, Baotou 014010, China
| | - Chun Li Zheng
- School of Energy and Environment, Inner Mongolia University of Science & Technology, Baotou 014010, China.
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A novel 'smart' PNIPAM-based copolymer for breast cancer targeted therapy: Synthesis, and characterization of dual pH/temperature-responsive lactoferrin-targeted PNIPAM-co-AA. Colloids Surf B Biointerfaces 2021; 202:111694. [PMID: 33740633 DOI: 10.1016/j.colsurfb.2021.111694] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 03/02/2021] [Accepted: 03/09/2021] [Indexed: 12/12/2022]
Abstract
Despite the active research towards introducing novel anticancer agents, the long-term sequelae and side effects of chemotherapy remain the major obstacle to achieving clinical success. Recent cancer research is now utilizing the medicinal chemistry toolbox to tailor novel 'smart' carrier systems that can reduce the major limitations of chemotherapy ranging from non-specificity and ubiquitous biodistribution to systemic toxicity. In this aspect, various stimuli-responsive polymers have gained considerable interest due to their intrinsic tumor targeting properties. Among these polymers, poly(N-isopropylacrylamide (PNIPAM) has been chemically modified to tune its thermoresponsivity or even copolymerized to endow new stimulus responsiveness for enhancing tumor targeting. Herein, we set our design rationale to impart additional active targeting entity to pH/temperature-responsive PNIPAM-based polymer for more efficient controlled payloads accumulation at the tumor through cellular internalization via synthesizing novel "super intelligent" lactoferrin conjugated PNIPAM-acrylic acid (LF-PNIPAM-co-AA) copolymer. The synthesized copolymer was physicochemically characterized and evaluated as a smart nanocarrier for targeting breast cancer. In this regard, Honokiol (HK) was utilized as a model anticancer drug and encapsulated in the nanoparticles to overcome its lipophilic nature and allow its parenteral administration, for achieving sustainable drug release with targeting action. Results showed that the developed HK-loaded LF-PNIPAM-co-AA nanohydrogels displayed high drug loading capacity reaching to 18.65 wt.% with excellent physical and serum stability. Moreover, the prepared HK-loaded nanohydrogels exhibited efficient in vitro and in vivo antitumor activities. In vivo, HK-loaded nanohydrogels demonstrated suppression of VEGF-1 and Ki-67 expression levels, besides inducing apoptosis through upregulating the expression level of active caspase-3 in breast cancer-bearing mice. Overall, the developed nanohydrogels (NGs) with pH and temperature responsivity provide a promising nanocarrier for anticancer treatment.
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26
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Sienkiewicz M, Jaśkiewicz A, Tarasiuk A, Fichna J. Lactoferrin: an overview of its main functions, immunomodulatory and antimicrobial role, and clinical significance. Crit Rev Food Sci Nutr 2021; 62:6016-6033. [PMID: 33685299 DOI: 10.1080/10408398.2021.1895063] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Lactoferrin (LF), a glycoprotein found in mucosal secretions, is characterized by a wide range of functions, including immunomodulatory and anti-inflammatory activities. Moreover, several investigations confirmed that LF displays high effectiveness against multiple bacteria and viruses and may be regarded as a potential inhibitor of enveloped viruses, such as presently prevailing SARS-CoV-2. In our review, we discuss available studies about LF functions and bioavailability of different LF forms in in vitro and in vivo models. Moreover, we characterize the potential benefits and side effects of LF use; we also briefly summarize the latest clinical trials examining LF application. Finally, we point potential role of LF in inflammatory bowel disease and indicate its use as a marker for disease severity.
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Affiliation(s)
- Michał Sienkiewicz
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - Andrzej Jaśkiewicz
- Institute of Food Technology and Analysis, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Lodz, Poland
| | - Aleksandra Tarasiuk
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - Jakub Fichna
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
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27
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Razak A, Hussain A. Lactoferrin Supplementation to Prevent Late-Onset Sepsis in Preterm Infants: A Meta-Analysis. Am J Perinatol 2021; 38:283-290. [PMID: 31529448 DOI: 10.1055/s-0039-1696676] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVE This study aimed to systematically review and meta-analyze the role of lactoferrin supplementation to prevent late-onset sepsis (LOS) in preterm infants. STUDY DESIGN Database search include PubMed, Web of Science, and Cochrane central for randomized clinical trial (RCTs). The Cochrane Grading of Recommendations Assessment, Development, and Evaluation methodology was used for summarizing the results. RESULTS Ten RCTs involving 3,679 infants were included. Lactoferrin supplementation with or without probiotics decreased all LOS (relative risk [RR]: 0.56; 95% confidence interval [CI]: 0.36-0.86; I 2 = 58%; 10 studies; 3,470 subjects; level of evidence [LOE]: low) significantly. Similarly, lactoferrin supplementation without probiotics decreased all LOS (RR: 0.43; 95% CI: 0.29-0.62; I 2 = 0%; 8 studies; 1,209 subjects; LOE: moderate) significantly. Lactoferrin supplementation did not significantly reduce necrotizing enterocolitis (RR: 0.62; 95% CI: 0.29-1.33; I 2 = 43%; 6 studies; 3,079 subjects; LOE: low), all-cause mortality (RR: 0.74; 95% CI: 0.36-1.53; I 2 = 53%; 8 studies; 3,395 subjects; LOE: very low), bronchopulmonary dysplasia (RR: 1; 95% CI: 0.90-1.13; I 2 = 0%; 4 studies; 2,570 subjects; LOE: moderate), and threshold retinopathy of prematurity eligible for surgical treatment (RR: 0.61; 95% CI: 0.25-1.51; I 2 = 74%; 2 studies; 2,481 subjects; LOE: very low). CONCLUSION Low to moderate quality evidence suggests that lactoferrin supplementation reduces LOS in preterm infants. Further research is needed to improve the certainty in the evidence.
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Affiliation(s)
- Abdul Razak
- Division of Neonatology, Department of Pediatrics, King Abdullah bin Abdulaziz University Hospital, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia.,Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Asif Hussain
- Department of Orthopedics, Bhimrao Ambedkar University, Agra, India
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Rascón-Cruz Q, Espinoza-Sánchez EA, Siqueiros-Cendón TS, Nakamura-Bencomo SI, Arévalo-Gallegos S, Iglesias-Figueroa BF. Lactoferrin: A Glycoprotein Involved in Immunomodulation, Anticancer, and Antimicrobial Processes. Molecules 2021; 26:molecules26010205. [PMID: 33401580 PMCID: PMC7795860 DOI: 10.3390/molecules26010205] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/02/2020] [Accepted: 11/12/2020] [Indexed: 12/15/2022] Open
Abstract
Lactoferrin is an iron binding glycoprotein with multiple roles in the body. Its participation in apoptotic processes in cancer cells, its ability to modulate various reactions of the immune system, and its activity against a broad spectrum of pathogenic microorganisms, including respiratory viruses, have made it a protein of broad interest in pharmaceutical and food research and industry. In this review, we have focused on describing the most important functions of lactoferrin and the possible mechanisms of action that lead to its function.
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Young L, McGuire W. Immunologic Properties of Human Milk and Clinical Implications in the Neonatal Population. Neoreviews 2020; 21:e809-e816. [PMID: 33262207 DOI: 10.1542/neo.21-12-e809] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Human milk contains various bioactive substances including hormones, immunoglobulins, enzymes, and growth factors in addition to its macro- and micronutrients. It has been suggested that human milk is a vehicle of communication between the maternal and infant immune systems, providing passive protection as well as direct active immunomodulation. Human milk protects newborns against pathogens by acting directly on multiple physiologic systems. Bioactive and immunologic factors regulate the infant's immune, metabolic, and microbiome systems. Breastfeeding protects infants in all socioeconomic groups, showing a pattern of protective dose/duration-response effects. This review summarizes the immune components and immunologic properties of human milk and provides an update of their potential implications in the neonatal population.
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Affiliation(s)
- Lauren Young
- Neonatal Medicine, Trevor Mann Baby Unit, Brighton and Sussex University Hospitals, Brighton, UK
| | - William McGuire
- Centre for Reviews and Dissemination and Hull York Medical School, University of York, York, UK
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Saettone V, Biasato I, Radice E, Schiavone A, Bergero D, Meineri G. State-of-the-Art of the Nutritional Alternatives to the Use of Antibiotics in Humans and Monogastric Animals. Animals (Basel) 2020; 10:ani10122199. [PMID: 33255356 PMCID: PMC7759783 DOI: 10.3390/ani10122199] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 11/19/2020] [Accepted: 11/20/2020] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Antibiotic resistance represents a worldwide recognized issue affecting both human and veterinary medicine, with a particular focus being directed towards monogastric animals destined for human consumption. This scenario is the result of frequent utilization of the antibiotics either for therapeutic purposes (humans and animals) or as growth promoters (farmed animals). Therefore, the search for nutritional alternatives has progressively been the object of significant efforts by the scientific community. So far, probiotics, prebiotics and postbiotics are considered the most promising products, as they are capable of preventing or treating gastrointestinal diseases as well as restoring a eubiosis condition after antibiotic-induced dysbiosis development. This review provides an updated state-of-the-art of these nutritional alternatives in both humans and monogastric animals. Abstract In recent years, the indiscriminate use of antibiotics has been perpetrated across human medicine, animals destined for zootechnical productions and companion animals. Apart from increasing the resistance rate of numerous microorganisms and generating multi-drug resistance (MDR), the nonrational administration of antibiotics causes sudden changes in the structure of the intestinal microbiota such as dysbiotic phenomena that can have a great clinical significance for both humans and animals. The aim of this review is to describe the state-of-the-art of alternative therapies to the use of antibiotics and their effectiveness in humans and monogastric animals (poultry, pigs, fish, rabbits, dogs and cats). In particular, those molecules (probiotics, prebiotics and postbiotics) which have a direct function on the gastrointestinal health are herein critically analysed in the prevention or treatment of gastrointestinal diseases or dysbiosis induced by the consumption of antibiotics.
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Affiliation(s)
- Vittorio Saettone
- Department of Veterinary Sciences, School of Agriculture and Veterinary Medicine, University of Turin, Grugliasco, Largo Braccini 2, 10095 Torino, Italy; (V.S.); (A.S.); (D.B.); (G.M.)
| | - Ilaria Biasato
- Department of Agricultural, Forestry and Food Sciences, School of Agriculture and Veterinary Medicine, University of Turin, Grugliasco, Largo Braccini 2, 10095 Torino, Italy
- Correspondence:
| | - Elisabetta Radice
- Department of Surgical Sciences, Medical School, University of Turin, Corso Dogliotti 14, 10126 Torino, Italy;
| | - Achille Schiavone
- Department of Veterinary Sciences, School of Agriculture and Veterinary Medicine, University of Turin, Grugliasco, Largo Braccini 2, 10095 Torino, Italy; (V.S.); (A.S.); (D.B.); (G.M.)
| | - Domenico Bergero
- Department of Veterinary Sciences, School of Agriculture and Veterinary Medicine, University of Turin, Grugliasco, Largo Braccini 2, 10095 Torino, Italy; (V.S.); (A.S.); (D.B.); (G.M.)
| | - Giorgia Meineri
- Department of Veterinary Sciences, School of Agriculture and Veterinary Medicine, University of Turin, Grugliasco, Largo Braccini 2, 10095 Torino, Italy; (V.S.); (A.S.); (D.B.); (G.M.)
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Ostertag F, Schmidt CM, Berensmeier S, Hinrichs J. Development and validation of an RP-HPLC DAD method for the simultaneous quantification of minor and major whey proteins. Food Chem 2020; 342:128176. [PMID: 33046286 DOI: 10.1016/j.foodchem.2020.128176] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/21/2020] [Accepted: 09/21/2020] [Indexed: 12/11/2022]
Abstract
Whey represents a valuable protein source for human nutrition. Whey composition varies with respect to process characteristics during milk processing. For efficient exploitation of this dairy side stream, reliable analytical methods are essential. The aim of this study was to develop and validate an RP-HPLC-DAD method for the simultaneous quantification of the minor (lactoferrin, lactoperoxidase, bovine serum albumin) and major (α-lactalbumin, β-lactoglobulin) whey proteins. Seven RP-columns were compared and the composition of the mobile phase was optimized to achieve baseline separation. In validation experiments the limits of detection (LOD < 8 mg/L) and quantification (LOQ < 24 mg/L) were determined. Validity was proofed by precision (>96%), accuracy (95% - 103%) and recovery (96% - 102%) measurements. Peak homogeneity was confirmed by SDS-PAGE. The individual working ranges were adjusted to the estimated protein concentrations in whey, allowing direct analysis without sample preparation at a method runtime of 23 min.
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Affiliation(s)
- Fabian Ostertag
- University of Hohenheim, Institute of Food Science and Biotechnology, Department of Soft Matter Science and Dairy Technology, Garbenstrasse 21, 70599 Stuttgart, Germany.
| | - Christian M Schmidt
- University of Hohenheim, Institute of Food Science and Biotechnology, Department of Soft Matter Science and Dairy Technology, Garbenstrasse 21, 70599 Stuttgart, Germany
| | - Sonja Berensmeier
- Technical University of Munich, Department of Mechanical Engineering, Bioseparation Engineering Group, Germany
| | - Jörg Hinrichs
- University of Hohenheim, Institute of Food Science and Biotechnology, Department of Soft Matter Science and Dairy Technology, Garbenstrasse 21, 70599 Stuttgart, Germany
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Abstract
Over the past decade, the use of bovine colostrum and its bioactive components as the basis of functional food and dietary supplements for humans has substantially increased. However, for developing new products enriched with probiotics and bovine colostrum, the influence of colostrum composition on the growth promotion of bacteria still needs to be tested. Therefore, we decided to study the influence of bovine colostrum chemical and mineral composition as well as the content of bioactive compounds (immunoglobulins, lactoferrin, lactoperoxidase) on the growth of ten selected strains from genera Lactobacillus, Lacticaseibacillus, Bifidobacterium, and Enterococcus. After 24 h of fermentation, the growth was assessed based on lactic and acetic acids production evaluated using isotachophoresis, bacterial counts determined by the agar plate method, and change of pH. The production of acids and bacterial counts were significantly (P<0.05) different between selected genera. The change of bacterial counts was correlated with pH, but the correlation between growth and bovine colostrum composition was not proven. The highest growth and production of lactic acid was observed after the fermentation of bovine colostrum by the strains Enterococcus faecium CCDM 922A and CCDM 945.
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Ochoa T, Loli S, Mendoza K, Carcamo C, Bellomo S, Cam L, Castaneda A, Campos M, Jacobs J, Cossey V, Zegarra J. Effect of bovine lactoferrin on prevention of late-onset sepsis in infants <1500 g: a pooled analysis of individual patient data from two randomized controlled trials. Biochem Cell Biol 2020; 99:14-19. [PMID: 32931708 DOI: 10.1139/bcb-2020-0046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We previously conducted two randomized controlled trials with bovine lactoferrin (bLF) for the prevention of late-onset sepsis (LOS) in infants with a birth weight <2500 g (Study 1) and <2000 g (Study 2). The aim of this study was to determine the preventative effects of bLF on culture-proven or probable LOS in infants with a birth weight <1500 g from both studies, and to determine the effect of bLF in relation to intake of human milk. Both trial designs had similar inclusion and exclusion criteria, the same dose of bLF [200 mg·(kg body mass)-1·day-1], and used the same control (maltodextrin). We fitted multivariate Cox regression models to estimate the effect of bLF on the risk of development of the composite outcome, adjusting for covariates. We included 335 neonates with a mean birth weight of 1162 ± 244 g; 27.5% were <1000 g. There were 33 first episodes of LOS in the bLF treatment group and 48 in the control group (19.5% vs. 28.9%). bLF had a protective effect on the risk of development of LOS [hazard ratio (HR) = 0.64; %95 CI = 0.41-0.99; p = 0.048]; particularly among infants weighing <1000 g [HR = 0.46; %95 CI = 0.22-0.96; p = 0.039] and infants with a low intake of human milk [HR = 0.40; %95 CI = 0.19-0.84; p = 0.015]. Therefore, bLF supplementation protects infants <1500 g from LOS, particularly those infants not receiving human milk.
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Affiliation(s)
- Theresa Ochoa
- Facultad de Medicina, Universidad Peruana Cayetano Heredia, Lima, Peru.,School of Public Health, University of Texas Health Science Center at Houston, Houston, Texas, USA.,Doctoral School of Biomedial Sciences, KU Leuven, Belgium
| | - Sebastian Loli
- Facultad de Salud Pública y Administración, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Karina Mendoza
- Facultad de Salud Pública y Administración, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Cesar Carcamo
- Facultad de Salud Pública y Administración, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Sicilia Bellomo
- Facultad de Medicina, Universidad Peruana Cayetano Heredia, Lima, Peru.,Hospital Cayetano Heredia, Lima, Peru
| | - Luis Cam
- Hospital Nacional Alberto Sabogal, Lima, Peru
| | | | - Miguel Campos
- Facultad de Ciencias y Filosofia, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Jan Jacobs
- Department of Microbiology and Immunology, KU Leuven, Belgium.,Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - Veerle Cossey
- Department of Development and Regeneration, KU Leuven, Belgium
| | - Jaime Zegarra
- Facultad de Medicina, Universidad Peruana Cayetano Heredia, Lima, Peru.,Hospital Cayetano Heredia, Lima, Peru
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Pall E, Roman A. Lactoferrin Functionalized Biomaterials: Tools for Prevention of Implant-Associated Infections. Antibiotics (Basel) 2020; 9:E522. [PMID: 32824241 PMCID: PMC7459815 DOI: 10.3390/antibiotics9080522] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/12/2020] [Accepted: 08/13/2020] [Indexed: 12/15/2022] Open
Abstract
Tissue engineering is one of the most important biotechnologies in the biomedical field. It requires the application of the principles of scientific engineering in order to design and build natural or synthetic biomaterials feasible for the maintenance of tissues and organs. Depending on the specific applications, the selection of the proper material remains a significant clinical concern. Implant-associated infection is one of the most severe complications in orthopedic implant surgeries. The treatment of these infections is difficult because the surface of the implant serves not only as a substrate for the formation of the biofilm, but also for the selection of multidrug-resistant bacterial strains. Therefore, a promising new approach for prevention of implant-related infection involves development of new implantable, non-antibiotic-based biomaterials. This review provides a brief overview of antimicrobial peptide-based biomaterials-especially those coated with lactoferrin.
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Affiliation(s)
- Emoke Pall
- Life Science Institute, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca 400372, Romania
| | - Alexandra Roman
- Department of Periodontology, Faculty of Dental Medicine, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca 400012, Romania;
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Gao Y, Hou L, Lu C, Wang Q, Pan B, Wang Q, Tian J, Ge L. Enteral Lactoferrin Supplementation for Preventing Sepsis and Necrotizing Enterocolitis in Preterm Infants: A Meta‑Analysis With Trial Sequential Analysis of Randomized Controlled Trials. Front Pharmacol 2020; 11:1186. [PMID: 32848789 PMCID: PMC7426497 DOI: 10.3389/fphar.2020.01186] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 07/21/2020] [Indexed: 12/21/2022] Open
Abstract
Background Several clinical trials investigated the effects of enteral lactoferrin supplementation on the prevention of sepsis and necrotizing enterocolitis (NEC) in preterm infants, but the efficacy and safety remain disputed. Therefore, we systematically evaluated the effect of enteral lactoferrin supplementation in preterm infants through a meta‑analysis with trial sequential analysis (TSA). Methods We searched six databases to identify randomized controlled trials (RCTs) that evaluated the effects of lactoferrin supplementation compared with placebo or no intervention in preterm infants. RevMan version 5.3 software was used to estimate pooled relative risks (RRs) with the random-effects model. TSA, subgroup analyses, and meta-regression analyses were also performed. Results Nine RCTs with 3515 samples were included. With low to moderate quality of evidence, compared with placebo, enteral lactoferrin supplementation did not significantly decrease the incidences of late-onset sepsis (RR = 0.63, 95% CI: 0.38 to 1.02, P = 0.06), NEC stage II or III (RR = 0.68, 95% CI: 0.30 to 1.52, P = 0.35), all-cause mortality (RR = 0.89, 95% CI: 0.51 to 1.57, P = 0.69), bronchopulmonary dysplasia (RR = 1.01, 95% CI: 0.90 to 1.13, P = 0.92), retinopathy of prematurity (RR = 0.80, 95% CI: 0.49 to 1.32, P = 0.38), invasive fungal infection (RR = 0.27, 95% CI: 0.02 to 3.94, P = 0.34), intraventricular hemorrhage (RR = 1.40, 95% CI: 0.39 to 5.08, P = 0.61), and urinary tract infection (RR = 0.35, 95% CI: 0.11 to 1.06, P = 0.06). Subgroup analysis revealed that lactoferrin significantly reduced the incidence of sepsis in infants with a birth weight below 1500 g (RR = 0.43, 95% CI: 0.22 to 0.84, P = 0.01). TSAs of the primary outcomes showed that the evidence is insufficient and further data is required. Conclusions Limited evidence suggested that enteral lactoferrin supplementation was associated with a reduction of late-onset sepsis in infants with a birth weight below 1500g, however, did not decrease the incidence of NEC stage II or III, all-cause mortality, and other adverse events in preterm infants. The present evidence was insufficient to inform clinical practice.
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Affiliation(s)
- Ya Gao
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Key Laboratory of Evidence-Based Medicine and Knowledge Translation of Gansu Province, Lanzhou, China
| | - Liangying Hou
- Evidence-Based Social Science Research Center, School of Public Health, Lanzhou University, Lanzhou, China
| | - Cuncun Lu
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Key Laboratory of Evidence-Based Medicine and Knowledge Translation of Gansu Province, Lanzhou, China
| | - Qi Wang
- Evidence-Based Social Science Research Center, School of Public Health, Lanzhou University, Lanzhou, China
| | - Bei Pan
- Gansu Provincial Hospital, Lanzhou, China
| | - Quan Wang
- Department of Gastrointestinal Surgery & Laboratory of Surgical Oncology, Peking University People's Hospital, Peking University, Beijing, China
| | - Jinhui Tian
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Key Laboratory of Evidence-Based Medicine and Knowledge Translation of Gansu Province, Lanzhou, China
| | - Long Ge
- Evidence-Based Social Science Research Center, School of Public Health, Lanzhou University, Lanzhou, China.,Department of Social Medicine and Health Management, School of Public Health, Lanzhou University, Lanzhou, China
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Bovine Lactoferrin Supplementation Does Not Disrupt Microbiota Development in Preterm Infants Receiving Probiotics. J Pediatr Gastroenterol Nutr 2020; 71:216-222. [PMID: 32404742 DOI: 10.1097/mpg.0000000000002734] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
OBJECTIVE The aim of the study was to assess whether bovine lactoferrin (bLf) supplementation disrupts intestinal microbiota development in preterm infants less than 31 weeks gestational age receiving prophylactic probiotic administration. METHODS Subjects were recruited from the LACUNA trial (ISRCTN66482337), designed to assess bLf safety. These subjects were randomized to daily receive either probiotic supplements or probiotics supplemented with 100 mg bLf mixed with their feeds (human milk or formula). Stools were collected weekly from enrolled infants for 1 month and the microbiota characterized using V6-16S rRNA gene amplicon profiling. RESULTS Infants' microbiomes did not increase in alpha diversity over time in both feeding interventions. Infants receiving bLf supplementation had overall higher species richness as compared with those not receiving these supplements and lactoferrin supplementation had differing effects on infant microbiota species richness depending on the infant's gestational age. Principal co-ordinate analysis revealed that the infant microbiotas did not separate by intervention group, gestational age bracket at birth or sampling time and the main factor dictating sample clustering was infant identity. There were very few detectable differences in taxa relative abundance or functional gene content between the microbiotas in the 2 study groups. CONCLUSIONS Bovine lactoferrin supplementation has minimal impact on microbiota composition/function in preterm infants receiving probiotics, and therefore, is unlikely to disrupt microbiota development.
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Comparative study of antimicrobial activity between some medicine plants and recombinant Lactoferrin peptide against some pathogens of cultivated button mushroom. Arch Microbiol 2020; 202:2525-2532. [PMID: 32653933 DOI: 10.1007/s00203-020-01964-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 06/19/2020] [Accepted: 06/24/2020] [Indexed: 12/16/2022]
Abstract
The adverse effects of chemical pesticides on human health and environment cannot be ignored, hence it seems that novel alternative compounds should be applied to control plant pathogens. Among various alternative sources, natural compounds such as plant essential oils, plant extracts and recombinant antimicrobial peptides are of significance. The aim of the present study was to investigate antimicrobial activity of plants essential oils and plant extracts of six medicinal plants (Lippia citriodora, Ferula gummosa, Bunium persicum, Mentha piperita, Plantago major and Salvadora persica) along with a chimera peptide of camel lactoferrin, which is the most important antimicrobial component of camel milk, against Pseudomonas tolaasii and Trichoderma harzianum as pathogens of white button mushroom. The antibacterial activity test was conducted under in vitro conditions through disc diffusion method. The results showed that chimera camel lactoferrin peptide, with the highest amount of inhibitory zone (14.63 mm in 20 μg/mL concentration), has a significant difference in antibacterial activity compared to other treatments. Ferula gummosa conferred no antibacterial activity. Also, the results of antifungal effects indicated that plant essential oils and extracts have more antifungal activity than recombinant peptide. Generally, L. citriodora, B. persicum, M. piperita treatments could completely prevent growth of fungal in in vitro conditions. Therefore, using the mentioned plants can be a good replacement for reducing the chemical pesticides against pathogenic agents of button mushroom, without any adverse effects on environment and human health.
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Influence of thermal treatment on physical, structural characteristics and stability of lactoferrin, EGCG and high methoxylated pectin aggregates. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109221] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Tsukahara T, Fujimori A, Misawa Y, Oda H, Yamauchi K, Abe F, Nomiyama T. The Preventive Effect of Lactoferrin-Containing Yogurt on Gastroenteritis in Nursery School Children-Intervention Study for 15 Weeks. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17072534. [PMID: 32272777 PMCID: PMC7177863 DOI: 10.3390/ijerph17072534] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/03/2020] [Accepted: 04/04/2020] [Indexed: 12/17/2022]
Abstract
To evaluate the effects of bovine lactoferrin (LF)-containing yogurt on gastroenteritis in nursery school children during the winter season, we conducted a randomized prospective study. A total of 1296 children were randomized into a group in which LF was provided in yogurt (LF group, n = 661) and a non-LF consumption group (control group, n = 635). The LF group was given LF-containing yogurt (100 mg/day) on all 5 weekdays for approximately 15 weeks, and the control group consumed fruit jelly instead of the yogurt. The final totals of 578 children as the LF group and 584 as the control group were analyzed. The total number of children who were absent from school due to vomiting was significantly lower in the LF group compared to the control, accounting for ≥3 days in any week: 10/234 (4.3%) vs. 49/584 (8.4%), respectively; p = 0.04. Regarding the relationship between absences due to vomiting and the consumption of the LF-containing yogurt, the adjusted odds ratio for absence due to vomiting was 2.48 (95% CI: 1.19–5.14) in the LF children who consumed LF-containing yogurt ≤2 days/week compared to the LF children who consumed the yogurt ≥ 3 days/week. The consumption of LF-containing yogurt (100 mg/day) for ≥3 days/week might help alleviate the symptom of vomiting in nursery school children during the winter.
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Affiliation(s)
- Teruomi Tsukahara
- Department of Occupational Medicine, School of Medicine, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan;
- Department of Preventive Medicine and Public Health, School of Medicine, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan; (A.F.); (Y.M.)
- Correspondence: ; Tel.: +81-263-37-2622; Fax: +81-263-37-3449
| | - Anri Fujimori
- Department of Preventive Medicine and Public Health, School of Medicine, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan; (A.F.); (Y.M.)
| | - Yuka Misawa
- Department of Preventive Medicine and Public Health, School of Medicine, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan; (A.F.); (Y.M.)
| | - Hirotsugu Oda
- Food Ingredients and Technology Institute, R&D Division, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa 252-8583, Japan; (H.O.); (K.Y.); (F.A.)
| | - Koji Yamauchi
- Food Ingredients and Technology Institute, R&D Division, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa 252-8583, Japan; (H.O.); (K.Y.); (F.A.)
| | - Fumiaki Abe
- Food Ingredients and Technology Institute, R&D Division, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa 252-8583, Japan; (H.O.); (K.Y.); (F.A.)
| | - Tetsuo Nomiyama
- Department of Occupational Medicine, School of Medicine, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan;
- Department of Preventive Medicine and Public Health, School of Medicine, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan; (A.F.); (Y.M.)
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Ochoa TJ, Zegarra J, Bellomo S, Carcamo CP, Cam L, Castañeda A, Villavicencio A, Gonzales J, Rueda MS, Turin CG, Zea-Vera A, Guillen D, Campos M, Ewing-Cobbs L. Randomized Controlled Trial of Bovine Lactoferrin for Prevention of Sepsis and Neurodevelopment Impairment in Infants Weighing Less Than 2000 Grams. J Pediatr 2020; 219:118-125.e5. [PMID: 32037149 PMCID: PMC7096260 DOI: 10.1016/j.jpeds.2019.12.038] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 11/25/2019] [Accepted: 12/17/2019] [Indexed: 12/15/2022]
Abstract
OBJECTIVES To determine the effect of bovine lactoferrin on prevention of late-onset sepsis (LOS) and neurodevelopment delay. STUDY DESIGN Randomized, double-blind, controlled trial in neonates with a birth weight of 500-2000 g in 3 neonatal units in Lima, Peru, comparing bovine lactoferrin 200 mg/kg/day with placebo administered for 8 weeks. The primary outcome was the first episode of culture-proven LOS or sepsis-associated death. Neurodevelopment delay was assessed by the Mullen Scales at 24 months corrected age. RESULTS Of the 414 infants enrolled, 209 received bovine lactoferrin and 205 received placebo. LOS or sepsis-associated death occurred in 22 infants (10.5%) in the bovine lactoferrin group vs 30 (14.6%) in the placebo group; there was no difference after adjusting for hospital and birth weight; hazard ratio 0.73 (95% CI, 0.42-1.26). For infants with birth weights of <1500 g the hazard ratio was 0.69 (95% CI, 0.39-1.25). The mean age-adjusted normalized Mullen composite score at 24 months was 83.3 ± 13.6 in the bovine lactoferrin group vs 82.6 ± 13.1 in the placebo group. Growth outcomes and rehospitalization rates during the 2-year follow-up were similar in both groups, except for significantly less bronchiolitis in the bovine lactoferrin group (rate ratio, 0.34; 95% CI, 0.14-0.86). CONCLUSIONS Supplementation with bovine lactoferrin did not decrease the incidence of sepsis in infants with birth weights of <2000 g. Growth and neurodevelopment outcomes at 24 months of age were similar. Neonatal bovine lactoferrin supplementation had no adverse effects. TRIAL REGISTRATION ClinicalTrials.gov: NCT01525316.
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Affiliation(s)
- Theresa J. Ochoa
- Department of Pediatrics, School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru,Instituto de Medicina Tropical “Alexander von Humboldt”, Universidad Peruana Cayetano Heredia, Lima, Peru,Center for Infectious Diseases, School of Public Health, University of Texas Health Science Center at Houston, Houston, Texas, United States
| | - Jaime Zegarra
- Department of Pediatrics, School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru,Hospital Cayetano Heredia, Lima, Peru
| | - Sicilia Bellomo
- Department of Pediatrics, School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru,Hospital Cayetano Heredia, Lima, Peru
| | - Cesar P. Carcamo
- School of Public Health and Administration, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Luis Cam
- Hospital Nacional Alberto Sabogal, Lima, Peru
| | | | - Aasith Villavicencio
- Department of Pediatrics, School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Jorge Gonzales
- Department of Pediatrics, School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Maria S. Rueda
- Department of Pediatrics, School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Christie G. Turin
- Department of Pediatrics, School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Alonso Zea-Vera
- Department of Pediatrics, School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Daniel Guillen
- Department of Pediatrics, School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru,Hospital Cayetano Heredia, Lima, Peru
| | - Miguel Campos
- Department of Mathematics, School of Science and Philosophy, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Linda Ewing-Cobbs
- Department of Pediatrics and Children’s Learning Institute, School of Medicine, University of Texas Health Science Center at Houston, Houston, Texas, United States
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Distribution of Lactoferrin Is Related with Dynamics of Neutrophils in Bacterial Infected Mice Intestine. Molecules 2020; 25:molecules25071496. [PMID: 32218351 PMCID: PMC7180821 DOI: 10.3390/molecules25071496] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 03/22/2020] [Accepted: 03/25/2020] [Indexed: 12/14/2022] Open
Abstract
Lactoferrin (Lf) is a conserved iron-binding glycoprotein with antimicrobial activity, which is present in secretions that recover mucosal sites regarded as portals of invaded pathogens. Although numerous studies have focused on exogenous Lf, little is known about its expression of endogenous Lf upon bacterial infection. In this study, we investigated the distribution of Lf in mice intestine during Escherichia coli (E. coli) K88 infection. PCR and immunohistology staining showed that mRNA levels of Lf significantly increased in duodenum, ileum and colon, but extremely decreased in jejunum at 8 h and 24 h after infection. Meanwhile, endogenous Lf was mostly located in the lamina propria of intestine villi, while Lf receptor (LfR) was in the crypts. It suggested that endogenous Lf-LfR interaction might not be implicated in the antibacterial process. In addition, it was interesting to find that the infiltration of neutrophils into intestine tissues was changed similarly to Lf expression. It indicated that the variations of Lf expression were rather due to an equilibrium between the recruitment of neutrophils and degranulation of activated neutrophils. Thus, this new knowledge will pave the way to a more effective understanding of the role of Lf in intestinal mucosal immunity.
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The Influence of Nutrients on Inflammatory Bowel Diseases. J Nutr Metab 2020; 2020:2894169. [PMID: 32190385 PMCID: PMC7064842 DOI: 10.1155/2020/2894169] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 12/30/2019] [Indexed: 12/14/2022] Open
Abstract
Inflammatory bowel diseases is a group of inflammatory diseases. The pathogenesis of diseases is multifactorial, which may include a Western-type diet. Diseases occur with periods of recurrence and remission. Many factors can have a beneficial effect on reducing the frequency of recurrence and prolonging the remission period. Such ingredients include dietary fibre, mono- and polyunsaturated fatty acids, certain vitamins (D, C, and E), flavonoids, and minerals such as zinc and selenium. Properly selected nutrition might be an integral part of the treatment of patients with Crohn's disease or ulcerative colitis.
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Ochoa TJ, Mendoza K, Carcamo C, Zegarra J, Bellomo S, Jacobs J, Cossey V. Is Mother's Own Milk Lactoferrin Intake Associated with Reduced Neonatal Sepsis, Necrotizing Enterocolitis, and Death? Neonatology 2020; 117:167-174. [PMID: 32053823 PMCID: PMC7381382 DOI: 10.1159/000505663] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 12/28/2019] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Lactoferrin (LF) is a protective protein present in milk with anti-infective and immune-modulating properties. OBJECTIVES The aim of this study was to determine the association of maternal LF intake and mother's own milk intake in the first 10 days of life on the prevention of late-onset sepsis (LOS), necrotizing enterocolitis (NEC), or death in the first 8 weeks of life in newborns with a birth weight <2,000 g. METHODS A retrospective cohort study was conducted, with the exposure being the consumption of mother's own LF and mother's own milk in the first 10 days of life, and the outcome being LOS, NEC, or death during days 11 and 56 of life, analyzed by Cox regression. RESULTS Two hundred and ninety-nine infants were enrolled, including 240 with human LF intake information. The average daily human LF intake over days 4-10 of life was 283 mg/kg/day (IQR 114-606 mg/kg/day). The hazard ratio (HR) of mother's own milk LF intake ≥100 mg/kg/day in days 4-10 for LOS, NEC, or death was 0.297 (95% CI 0.156-0.568, p < 0.001); the adjusted HR was 0.752 (95% CI 0.301-1.877, p = 0.541). The adjusted HR of mother's own milk cumulative intake (days 4-10) of 54-344 mL/kg (25-75 quartiles) for LOS, NEC, or death was 0.414 (95% CI 0.196-0.873, p = 0.02). Infants who developed an event (LOS, NEC, or death) had significantly less median daily human LF intake than those that did not (89 vs. 334 mg/kg/day, respectively, p < 0.0001). CONCLUSION Consumption of higher amounts of mother's own milk in the first days of life is associated with less infection, NEC, and death. Early human milk intake should be strongly encouraged in all newborns.
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Affiliation(s)
- Theresa J Ochoa
- Facultad de Medicina, Universidad Peruana Cayetano Heredia, Lima, Peru, .,School of Public Health, University of Texas Health Science Center at Houston, Houston, Texas, USA, .,Doctoral School of Biomedical Sciences, KU Leuven, Leuven, Belgium,
| | - Karina Mendoza
- Facultad de Salud Pública y Administración, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Cesar Carcamo
- Facultad de Salud Pública y Administración, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Jaime Zegarra
- Facultad de Medicina, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Sicilia Bellomo
- Facultad de Medicina, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Jan Jacobs
- Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium.,Department of Clinical Science, Institute of Tropical Medicine, Antwerp, Belgium
| | - Veerle Cossey
- Department of Development and Regeneration, KU Leuven, Leuven, Belgium
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Wang C, Wang Q, Li R, Qin J, Song L, Zhang Q, Liu M, Chen J, Wang C. LTF, PRTN3, and MNDA in Synovial Fluid as Promising Biomarkers for Periprosthetic Joint Infection: Identification by Quadrupole Orbital-Trap Mass Spectrometry. J Bone Joint Surg Am 2019; 101:2226-2234. [PMID: 31644522 DOI: 10.2106/jbjs.18.01483] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Diagnosing periprosthetic joint infection (PJI) requires various laboratory and clinical criteria. The purpose of this study was to explore novel biomarkers that could rapidly diagnose PJI with high accuracy. METHODS In this retrospective study of prospectively collected samples, 50 synovial fluid aspirates, 20 from the hip and 30 from the knee, were collected before surgery; 25 of the patients were diagnosed as having aseptic loosening (non-PJI) and 25, as having PJI according to the Musculoskeletal Infection Society criteria. A quadrupole orbital-trap mass spectrometry (MS) instrument was used to compare expression of proteins in patients with and without PJI. Proteins that were most efficacious for diagnosis of PJI were then determined using prediction analysis of microarray software and a random forest model. The most promising proteins were selected, and altered expression of these selected proteins was verified by ELISA (enzyme-linked immunosorbent assay) in an extended sample cohort. RESULTS A total of 256 proteins were significantly upregulated (≥3.0-fold) and 14 proteins were downregulated in synovial fluid of patients with PJI compared with patients without PJI. The 3 most promising proteins were lactoferrin (LTF), polymorphonuclear leukocyte serine protease 3 (PRTN3), and myeloid nuclear differentiation antigen (MNDA). When MS was used for diagnosis of PJI, the area under the curve was 0.9888 for LTF, 0.9488 for PRTN3, and 0.9632 for MNDA. ELISA results verified that LTF, MNDA, and PRTN3 were sensitive, while LTF and MNDA were specific, for diagnosis of PJI. CONCLUSIONS This proteomic study identified a previously noted protein and 2 novel candidate proteins as promising synovial fluid biomarkers for PJI diagnosis, and they should be further validated in future clinical trials. LEVEL OF EVIDENCE Diagnostic Level III. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Chi Wang
- Departments of Clinical Laboratory Medicine (Chi Wang, Q.W., Q.Z., and Chengbin Wang) and Orthopedics (Q.W., R.L., and J.C.), People's Liberation Army General Hospital, Beijing, People's Republic of China
| | - Qi Wang
- Departments of Clinical Laboratory Medicine (Chi Wang, Q.W., Q.Z., and Chengbin Wang) and Orthopedics (Q.W., R.L., and J.C.), People's Liberation Army General Hospital, Beijing, People's Republic of China
| | - Rui Li
- Departments of Clinical Laboratory Medicine (Chi Wang, Q.W., Q.Z., and Chengbin Wang) and Orthopedics (Q.W., R.L., and J.C.), People's Liberation Army General Hospital, Beijing, People's Republic of China
| | - Jun Qin
- State Key Laboratory of Proteomics, National Center for Protein Sciences (The PHOENIX Center), Beijing Proteome Research Center, Beijing, People's Republic of China
| | - Lei Song
- State Key Laboratory of Proteomics, National Center for Protein Sciences (The PHOENIX Center), Beijing Proteome Research Center, Beijing, People's Republic of China
| | - Qian Zhang
- Departments of Clinical Laboratory Medicine (Chi Wang, Q.W., Q.Z., and Chengbin Wang) and Orthopedics (Q.W., R.L., and J.C.), People's Liberation Army General Hospital, Beijing, People's Republic of China
| | - Mingwei Liu
- State Key Laboratory of Proteomics, National Center for Protein Sciences (The PHOENIX Center), Beijing Proteome Research Center, Beijing, People's Republic of China
| | - Jiying Chen
- Departments of Clinical Laboratory Medicine (Chi Wang, Q.W., Q.Z., and Chengbin Wang) and Orthopedics (Q.W., R.L., and J.C.), People's Liberation Army General Hospital, Beijing, People's Republic of China
| | - Chengbin Wang
- Departments of Clinical Laboratory Medicine (Chi Wang, Q.W., Q.Z., and Chengbin Wang) and Orthopedics (Q.W., R.L., and J.C.), People's Liberation Army General Hospital, Beijing, People's Republic of China
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Abstract
Proteins are key structural components of all human cells and are also involved in key physiologic processes through their roles as enzymes, hormones and transport proteins. Protein requirements are substantially higher in preterm infants than those born at term, yet inadequate protein intakes are a common problem on many neonatal units. Very preterm infants (VPT, <32 weeks) commonly receive parenteral amino acid solutions which are typically commenced on admission, and increased over the next few days. Several recent studies have explored differing parenteral amino acid intakes in the first few days, and recommendations have recently been updated. Parenteral nutrition intakes are decreased as enteral feeds are tolerated, but human milk alone will not meet protein needs in most VPT and supplementation or fortification will be required. This review paper considers basic protein and amino acid physiology in the newborn period, and the evidence base for current recommendations.
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Affiliation(s)
- Nicholas D Embleton
- Newcastle Neonatal Service, Newcastle Hospitals NHS Trust, Newcastle upon Tyne, UK.
| | - Chris H P van den Akker
- Emma Children's Hospital, Amsterdam UMC, University of Amsterdam and Vrije Universiteit Amsterdam, Pediatrics - Neonatology, Amsterdam, The Netherlands
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Pempek JA, Watkins LR, Bruner CE, Habing GG. A multisite, randomized field trial to evaluate the influence of lactoferrin on the morbidity and mortality of dairy calves with diarrhea. J Dairy Sci 2019; 102:9259-9267. [PMID: 31400894 PMCID: PMC7094274 DOI: 10.3168/jds.2019-16476] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 05/20/2019] [Indexed: 11/25/2022]
Abstract
Diarrhea is one of the most common causes of antimicrobial use and mortality in young calves. To reduce antimicrobial use and resistance on dairy farms, research on alternative therapies for calf diarrhea is necessary. Our laboratory previously conducted a randomized clinical trial investigating the effectiveness of lactoferrin, an iron-binding protein found in colostrum, as a treatment for calf diarrhea. The trial showed significantly reduced calf mortality in diarrheic calves that were administered lactoferrin. Thus, the objective of this study was to corroborate the results of our prior clinical trial across multiple farms and to investigate the effect of lactoferrin on the morbidity and mortality of preweaned calves with naturally occurring cases of diarrhea. This randomized field trial was conducted on 5 commercial dairy farms in Ohio. In total, 485 calves (≤21 d of age) were enrolled at first diarrhea diagnosis (fecal score ≥2 defined as loose to watery) and randomly assigned to receive an oral dose of lactoferrin (3 g of lactoferrin powder dissolved in 30 mL of water) or 30 mL of water (control) once daily for 3 consecutive days. Health assessments were conducted on the day of diarrhea diagnosis (d 0) and 1, 2, 3, 7, 14, 21, 28, and 35 d following diagnosis. Producer records of disease treatment and mortality were collected 120 d following diagnosis. A Poisson regression model was used to test differences between treatments in disease frequency through 35 d post-diarrhea diagnosis and the incidence risk of treatment and mortality risk 120 d post-diarrhea diagnosis; the model controlled for calf age at enrollment, farm, and treatment. Median calf age at enrollment was 11 d and ranged from 1 to 26 d of age. At study enrollment, 51.3% (123/240) and 52.2% (128/245) of calves in the control and lactoferrin treatment groups, respectively, were diagnosed with severe diarrhea (fecal score = 3). The frequency of disease (diarrhea, dehydration, depression, signs of respiratory disease) through 35 d following diarrhea diagnosis was not significantly different for calves in the lactoferrin and control groups. Overall mortality risk for enrolled calves was 9.9%, and 10.7% (22/243) and 9.1% (26/242) of calves in the lactoferrin and control groups, respectively, died or were culled in the 120 d following diarrhea diagnosis. The relative risk of death or culling did not differ between treatment groups, however. Therefore, as performed in this study, lactoferrin as a treatment for calf diarrhea was not beneficial.
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Affiliation(s)
- J A Pempek
- Department of Veterinary Preventive Medicine, The Ohio State University, Columbus 43210
| | - L R Watkins
- Department of Veterinary Preventive Medicine, The Ohio State University, Columbus 43210
| | - C E Bruner
- Department of Veterinary Preventive Medicine, The Ohio State University, Columbus 43210
| | - G G Habing
- Department of Veterinary Preventive Medicine, The Ohio State University, Columbus 43210.
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Niu Z, Loveday SM, Barbe V, Thielen I, He Y, Singh H. Protection of native lactoferrin under gastric conditions through complexation with pectin and chitosan. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2019.02.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Abstract
BACKGROUND When human milk is not available for feeding preterm infants, protein hydrolysate, rather than standard cow's milk formulas (with intact proteins), is often used because it is perceived as being tolerated better and less likely to lead to complications. However, protein hydrolysate formulas are more expensive than standard formulas, and concern exists that their use in practice is not supported by high-quality evidence. OBJECTIVES To assess the effects of feeding preterm infants hydrolysed formula (vs standard cow's milk formula) on risk of feed intolerance, necrotising enterocolitis, and other morbidity and mortality. SEARCH METHODS We used the standard Cochrane Neonatal search strategy including electronic searches of the Cochrane Central Register of Controlled Trials (CENTRAL; 2019, Issue 1), in the Cochrane Library; Ovid MEDLINE (1966 to 28 January 2019); Ovid Embase (1980 to 28 January 2019); and the Cumulative Index to Nursing and Allied Health Literature (CINAHL) (28 January 2019), as well as conference proceedings and previous reviews. SELECTION CRITERIA Randomised and quasi-randomised controlled trials that compared feeding preterm infants protein hydrolysate versus standard (non-hydrolysed) cow's milk formula. DATA COLLECTION AND ANALYSIS Two review authors assessed trial eligibility and risk of bias and extracted data independently. We analysed treatment effects as described in the individual trials and reported risk ratios and risk differences for dichotomous data, and mean differences for continuous data, with respective 95% confidence intervals (CIs). We used a fixed-effect model in meta-analyses and explored potential causes of heterogeneity in sensitivity analyses. We assessed quality of evidence at the outcome level using the GRADE approach. MAIN RESULTS We identified 11 trials for inclusion in the review. All trials were small (total participants 665) and had various methodological limitations including uncertainty about methods to ensure allocation concealment and blinding. Most participants were clinically stable preterm infants of less than about 34 weeks' gestational age or with birth weight less than about 1750 g. Fewer participants were extremely preterm, extremely low birth weight, or growth restricted. Most trials found no effects on feed intolerance, assessed variously as mean pre-feed gastric residual volume, incidence of abdominal distension or other gastrointestinal signs of concern, or time taken to achieve full enteral feeds (meta-analysis was limited because studies used different measures). Meta-analysis showed no effect on the risk of necrotising enterocolitis (typical risk ratio 1.10, 95% CI 0.36 to 3.34; risk difference 0.00, 95% CI -0.03 to 0.04; 5 trials, 385 infants) (low-certainty evidence; downgraded for imprecision and design weaknesses). AUTHORS' CONCLUSIONS The identified trials provide only low-certainty evidence about the effects of feeding preterm infants protein hydrolysate versus standard formula. Existing data do not support conclusions that feeding protein hydrolysate affects the risk of feed intolerance or necrotising enterocolitis. Additional large, pragmatic trials are needed to provide more reliable and precise estimates of effectiveness and cost-effectiveness.
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Affiliation(s)
- Derek Hang Cheong Ng
- Hull York Medical School & Centre for Reviews and Dissemination, University of York, York, UK
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Griffiths J, Jenkins P, Vargova M, Bowler U, Juszczak E, King A, Linsell L, Murray D, Partlett C, Patel M, Berrington J, Embleton N, Dorling J, Heath PT, McGuire W, Oddie S. Enteral lactoferrin to prevent infection for very preterm infants: the ELFIN RCT. Health Technol Assess 2019; 22:1-60. [PMID: 30574860 DOI: 10.3310/hta22740] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Infections acquired in hospital are an important cause of morbidity and mortality in very preterm infants. Several small trials have suggested that supplementing the enteral diet of very preterm infants with lactoferrin, an antimicrobial protein processed from cow's milk, prevents infections and associated complications. OBJECTIVE To determine whether or not enteral supplementation with bovine lactoferrin (The Tatua Cooperative Dairy Company Ltd, Morrinsville, New Zealand) reduces the risk of late-onset infection (acquired > 72 hours after birth) and other morbidity and mortality in very preterm infants. DESIGN Randomised, placebo-controlled, parallel-group trial. Randomisation was via a web-based portal and used an algorithm that minimised for recruitment site, weeks of gestation, sex and single versus multiple births. SETTING UK neonatal units between May 2014 and September 2017. PARTICIPANTS Infants born at < 32 weeks' gestation and aged < 72 hours at trial enrolment. INTERVENTIONS Eligible infants were allocated individually (1 : 1 ratio) to receive enteral bovine lactoferrin (150 mg/kg/day; maximum 300 mg/day) or sucrose (British Sugar, Peterborough, UK) placebo (same dose) once daily from trial entry until a postmenstrual age of 34 weeks. Parents, caregivers and outcome assessors were unaware of group assignment. OUTCOMES Primary outcome - microbiologically confirmed or clinically suspected late-onset infection. Secondary outcomes - microbiologically confirmed infection; all-cause mortality; severe necrotising enterocolitis (NEC); retinopathy of prematurity (ROP); bronchopulmonary dysplasia (BPD); a composite of infection, NEC, ROP, BPD and mortality; days of receipt of antimicrobials until 34 weeks' postmenstrual age; length of stay in hospital; and length of stay in intensive care, high-dependency and special-care settings. RESULTS Of 2203 enrolled infants, primary outcome data were available for 2182 infants (99%). In the intervention group, 316 out of 1093 (28.9%) infants acquired a late-onset infection versus 334 out of 1089 (30.7%) infants in the control group [adjusted risk ratio (RR) 0.95, 95% confidence interval (CI) 0.86 to 1.04]. There were no significant differences in any secondary outcomes: microbiologically confirmed infection (RR 1.05, 99% CI 0.87 to 1.26), mortality (RR 1.05, 99% CI 0.66 to 1.68), NEC (RR 1.13, 99% CI 0.68 to 1.89), ROP (RR 0.89, 99% CI 0.62 to 1.28), BPD (RR 1.01, 99% CI 0.90 to 1.13), or a composite of infection, NEC, ROP, BPD and mortality (RR 1.01, 99% CI 0.94 to 1.08). There were no differences in the number of days of receipt of antimicrobials, length of stay in hospital, or length of stay in intensive care, high-dependency or special-care settings. There were 16 reports of serious adverse events for infants in the lactoferrin group and 10 for infants in the sucrose group. CONCLUSIONS Enteral supplementation with bovine lactoferrin does not reduce the incidence of infection, mortality or other morbidity in very preterm infants. FUTURE WORK Increase the precision of the estimates of effect on rarer secondary outcomes by combining the data in a meta-analysis with data from other trials. A mechanistic study is being conducted in a subgroup of trial participants to explore whether or not lactoferrin supplementation affects the intestinal microbiome and metabolite profile of very preterm infants. TRIAL REGISTRATION Current Controlled Trials ISRCTN88261002. FUNDING This project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 22, No. 74. See the NIHR Journals Library website for further project information. This trial was also sponsored by the University of Oxford, Oxford, UK. The funder provided advice and support and monitored study progress but did not have a role in study design or data collection, analysis and interpretation.
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Affiliation(s)
- James Griffiths
- National Perinatal Epidemiology Unit, University of Oxford, Oxford, UK
| | - Paula Jenkins
- National Perinatal Epidemiology Unit, University of Oxford, Oxford, UK
| | - Monika Vargova
- National Perinatal Epidemiology Unit, University of Oxford, Oxford, UK
| | - Ursula Bowler
- National Perinatal Epidemiology Unit, University of Oxford, Oxford, UK
| | - Edmund Juszczak
- National Perinatal Epidemiology Unit, University of Oxford, Oxford, UK
| | - Andrew King
- National Perinatal Epidemiology Unit, University of Oxford, Oxford, UK
| | - Louise Linsell
- National Perinatal Epidemiology Unit, University of Oxford, Oxford, UK
| | - David Murray
- National Perinatal Epidemiology Unit, University of Oxford, Oxford, UK
| | | | | | - Janet Berrington
- Newcastle Neonatal Service, Royal Victoria Infirmary, Newcastle upon Tyne, UK
| | - Nicholas Embleton
- Newcastle Neonatal Service, Royal Victoria Infirmary, Newcastle upon Tyne, UK
| | | | - Paul T Heath
- St George's, University of London and St George's University Hospitals NHS Trust, London, UK
| | - William McGuire
- Centre for Reviews and Dissemination, University of York, York, UK
| | - Sam Oddie
- Bradford Institute for Health Research, Bradford, UK
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Grzywacz K, Butcher J, Romain G, Li J, Stintzi A. The impact of probiotics and lactoferrin supplementation on piglet gastrointestinal microbial communities. Biometals 2019; 32:533-543. [PMID: 31041632 DOI: 10.1007/s10534-019-00195-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 04/09/2019] [Indexed: 11/26/2022]
Abstract
Probiotics and lactoferrin are currently being used in neonatal intensive care units in the hopes of reducing rates of sepsis and necrotizing enterocolitis (NEC). While studies have shown that these measures can be clinically beneficial to premature babies, and there are ongoing trials to measure their impact on NEC and sepsis rates, little is known about how they may impact microbiota development. We thus employed a newborn piglet model to assess the impact of feeding probiotics or a combination of probiotics and lactoferrin on development of the gastrointestinal microbiota. Healthy full-term piglets were fed either probiotics alone or probiotics and a bovine lactoferrin supplement over the first weeks of life, and their microbiota profiles were compared with unsupplemented controls. We found that both probiotic and probiotic plus lactoferrin treatments impacted the microbial composition within the gastrointestinal tract, with differing impacts on various regions within the gut. In addition, the impact of probiotics was often reversed by the presence of lactoferrin and both feeding interventions altered the microbiota's genetic propensity to use ferric versus ferrous ions. These results suggest that iron availability may be a key factor to consider when designing feeding interventions that target the microbiome.
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Affiliation(s)
- Kelly Grzywacz
- Ottawa Institute of Systems Biology, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
- Department of Pediatric Gastroenterology, Hepatology and Nutrition, CHU Sainte Justine, Montreal, QC, Canada
| | - James Butcher
- Ottawa Institute of Systems Biology, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - Guillaume Romain
- Ottawa Institute of Systems Biology, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - Jennifer Li
- Ottawa Institute of Systems Biology, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - Alain Stintzi
- Ottawa Institute of Systems Biology, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada.
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