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Lactoferrin

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https://www.readbyqxmd.com/read/29042449/peptide-yy-mediates-the-satiety-effects-of-diets-enriched-with-whey-protein-fractions-in-male-rats
#1
Rizaldy C Zapata, Arashdeep Singh, Prasanth K Chelikani
Dairy proteins-whey protein, in particular-are satiating and often recommended for weight control; however, little is known about the mechanisms by which whey protein and its components promote satiety and weight loss. We used diet-induced obese rats to determine whether the hypophagic effects of diets that are enriched with whey and its fractions, lactalbumin and lactoferrin, are mediated by the gut hormone, peptide YY (PYY). We demonstrate that high protein diets that contain whey, lactalbumin, and lactoferrin decreased food intake and body weight with a concurrent increase in PYY mRNA abundance in the colon and/or plasma PYY concentrations...
October 17, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29023467/dietary-lactoferrin-supplementation-to-gilts-during-gestation-and-lactation-improves-pig-production-and-immunity
#2
Marefa Jahan, Susie Kracht, Yen Ho, Ziaul Haque, Birendra N Bhattachatyya, Peter C Wynn, Bing Wang
Lactoferrin (LF), a sialylated iron-binding glycoprotein, performs multiple beneficial functions including modulating immunity and improves neurodevelopment, health and growth performance. Maternal LF intervention for gilts (first parity sows) on the performance of gilts and their offspring remains unknown. In the current study gilts were fed with a commercial pig feed supplemented with 1g LF /day (treatment group) or 1g milk casein/day (control group) from day 1 post mating throughout pregnancy and lactation for about 135 days...
2017: PloS One
https://www.readbyqxmd.com/read/28994180/a-conjugate-of-an-anti-egfr-vhh-and-a-cell-penetrating-peptide-drives-receptor-internalization-and-blocks-egfr-activation
#3
Sanne van Lith, Dirk van den Brand, Rike Wallbrecher, Sander van Duijnhoven, Roland Brock, William Leenders
Overexpression of (mutated) receptor tyrosine kinases is a characteristic of many aggressive tumors and induction of receptor uptake has long been recognized as a therapeutic modality. A conjugate of a synthetically produced cell penetrating peptide, corresponding to amino acids 38-59 of human lactoferrin, and the recombinant llama single-domain antibody (VHH) 7D12 that binds the human epidermal growth factor receptor (EGFR), was generated via sortase A-mediated transpeptidation. The conjugate blocks EGF-mediated EGFR activation with higher efficacy than both modalities alone, a phenomenon that is caused by both effective receptor blockade and internalization...
October 10, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28988537/comparison-of-interaction-between-ceruloplasmin-and-lactoferrin-transferrin-to-bind-or-not-to-bind
#4
A V Sokolov, I V Voynova, V A Kostevich, A Yu Vlasenko, E T Zakharova, V B Vasilyev
The year 2016 marked the 50th anniversary of the discovery by S. Osaki who first showed that ceruloplasmin (CP, ferro:O2-oxidoreductase or ferroxidase) is capable of oxidizing Fe(II) to Fe(III) and favors the incorporation of the latter into transferrin (TF). However, much debate remains in the literature concerning the existence of a complex between the enzyme oxidizing iron and the protein facilitating its transport in plasma. We studied CP in exocrine fluids and demonstrated its high-affinity interaction with transferrin found in breast milk and in lacrimal fluid, i...
September 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28986203/inhaled-nebulised-unfractionated-heparin-improves-lung-function-in-moderate-to-very-severe-copd-a-pilot-study
#5
Janis K Shute, Luigino Calzetta, Vittorio Cardaci, Stefania di Toro, Clive P Page, Mario Cazzola
BACKGROUND: COPD is an inflammatory airway disease characterised by progressive airflow limitation and air trapping, leading to lung hyperinflation and exercise limitation. Acute worsening of symptoms, including dyspnea, cough and sputum production, occurs during exacerbations which are associated with significantly reduced health related quality of life, and increased morbidity and mortality. Chronic bronchial mucus production and productive cough are risk factors for exacerbations. Medicines targeting bronchoconstriction and airway inflammation are the current mainstays of COPD therapy...
October 3, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28971586/dietary-n-glycans-from-bovine-lactoferrin-and-tlr-modulation
#6
Susana Figueroa-Lozano, Rivca L Valk-Weeber, Sander S van Leeuwen, Lubbert Dijkhuizen, Paul de Vos
SCOPE: Bovine lactoferrin (bLF) is an ingredient of food supplements and infant formulas given its antimicrobial and antiviral properties. We modified bLF enzymatically to alter its N-glycosylation and to isolate the glycan chains. The aims of this study were 1) to evaluate whether such derivates induce responses via Pattern Recognition Receptors (PRRs) namely Toll-like receptors (TLRs) and 2) to relate those responses to their different glycosylation profiles. METHODS AND RESULTS: The unmodified and modified bLF fractions were incubated with reporter cell lines expressing PRRs...
October 3, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28965518/in-vitro-and-in-vivo-antioxidant-potential-of-milks-yoghurts-fermented-milks-and-cheeses-a-narrative-review-of-evidence
#7
Anthony Fardet, Edmond Rock
The antioxidant potential (AP) is an important nutritional property of foods, as increased oxidative stress is involved in most diet-related chronic diseases. In dairy products, the protein fraction contains antioxidant activity, especially casein. Other antioxidants include: antioxidant enzymes; lactoferrin; conjugated linoleic acid; coenzyme Q10; vitamins C, E, A and D3; equol; uric acid; carotenoids; and mineral activators of antioxidant enzymes. The AP of dairy products has been extensively studied in vitro, with few studies in animals and human subjects...
October 2, 2017: Nutrition Research Reviews
https://www.readbyqxmd.com/read/28964519/inhibiting-prolactin-by-cabergoline-accelerates-mammary-gland-remodeling-during-the-early-dry-period-in-dairy-cows
#8
M Boutinaud, N Isaka, E Gandemer, P Lamberton, S Wiart, A I De Prado Taranilla, L M Sordillo, V Lollivier
The inhibition of prolactin release using cabergoline, a dopamine agonist, is an effective strategy to accelerate the changes in mammary secretion composition after drying-off. The objective of this study was to determine how cabergoline may affect mammary tissue remodeling during early involution. Holstein dairy cows were treated with either a single i.m. administration of 5.6 mg of cabergoline (Velactis, Ceva Santé Animale, Libourne, France, n = 7) or placebo (n = 7) at the time of drying-off. Mammary biopsy samples were collected 1 wk before drying-off (d -6), after 30 h of milk accumulation (d 1), and again 8 d following drying-off (d 8) to determine changes in gene expression, lactoferrin content, and cell turnover...
September 27, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28959181/bacterial-biota-of-women-with-bacterial-vaginosis-treated-with-lactoferrin-an-open-prospective-randomized-trial
#9
Alessandra Pino, Giuliana Giunta, Cinzia L Randazzo, Salvatore Caruso, Cinzia Caggia, Antonio Cianci
Background: Bacterial vaginosis is the most frequent condition associated to the vaginal microbiota imbalance, affecting about the 40-50% of women in the world. Even if antibiotics are effcetive for bacterial vaginosis treatment a long-term recurrence rates, higher than 70%, is recorded. Lactoferrin is an iron-binding glycoprotein with bacteriostatic and bactericidal properties. It owns the ability to protect the host against infection, by binding and regulating the iron needed for the bacterial proliferation...
2017: Microbial Ecology in Health and Disease
https://www.readbyqxmd.com/read/28947363/role-of-capsule-endoscopy-and-fecal-biomarkers-in-small-bowel-crohn-s-disease-to-assess-remission-and-predict-relapse
#10
Vipul Aggarwal, Andrew S Day, Susan Connor, Steven T Leach, Gregor Brown, Rajvinder Singh, Antony Friedman, Amany Zekry, Philip I Craig
BACKGROUND AND AIMS: Capsule endoscopy (CE) is the most sensitive test to diagnose small-bowel Crohn's disease (CD). Conventional parameters poorly assess CD remission and although fecal biomarkers assess colonic activity, their role in assessing remission is uncertain. We report CE findings in small-bowel CD patients in clinical remission compared with fecal biomarkers and standard clinical tools to determine mucosal remission and predict relapses. METHODS: 43 adult small-bowel CD patients in clinical remission (Crohn's disease activity index [CDAI] <150) were prospectively enrolled at 4 academic centers and followed clinically for 12 months...
September 22, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28946224/evaluation-of-non-covalent-ternary-aggregates-of-lactoferrin-high-methylated-pectin-egcg-in-stabilizing-%C3%AE-carotene-emulsions
#11
Jie Yang, Like Mao, Wei Yang, Cuixia Sun, Lei Dai, Yanxiang Gao
The present study explored the potential of ternary aggregates composed of lactoferrin (LF), high methylated pectin (HMP) and EGCG in stabilizing β-carotene emulsions. Different ternary aggregates were fabricated by mixing the three components in different sequences, followed by spray drying. Fluorescence measurement and FTIR analysis indicated that ternary aggregates and LF-HMP binary complex were formed mainly through hydrogen bonding and hydrophobic interactions. The mixing sequences of three components and the spray drying process resulted in different structures of ternary aggregates...
February 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28945281/in-vivo-study-of-the-effect-of-lactoferrin-on-iron-metabolism-and-bioavailability-from-different-iron-chemical-species-for-formula-milk-fortification
#12
Sonia Fernández-Menéndez, María L Fernández-Sánchez, Rafaella Regina Alves Peixoto, Belén Fernández-Colomer, Alfredo Sanz-Medel
Iron fortification in infant formulas is a common practice for providing iron to newborns in order to avoid its deficiency (anemia). Depending on the physicochemical species used, its bioavailability might be insufficient to meet iron requirements. In this vein, the influence of Lactoferrin (Lf) presence on iron bioavailability in 2-week-old wistar rats fed with formula milk fortified with (57) Fe(III)2 -Lf or (57) Fe(II)SO4 (in presence of Lf) using quantitative speciation (by HPLC-ICP-MS) and Isotope Pattern Deconvolution (IPD) is studied here...
September 25, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28933602/lactoferrin-structure-function-denaturation-and-digestion
#13
Bo Wang, Yakindra Prasad Timilsena, Ewan Blanch, Benu Adhikari
Lactoferrin (LF) is a multifunctional protein occurring in many biological secretions including milk. It possesses iron binding/transferring, antibacterial, antiviral, antifungal, anti-inflammatory and anti-carcinogenic properties. These functional properties intimately depend on the structural integrity of LF especially its higher order conformation. LF is primarily extracted from bovine milk and it is subsequently added into many commercial products such as nutritional supplements, infant formula, cosmetics and toothpaste...
September 21, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28931777/antidepressant-like-effect-of-milk-derived-lactoferrin-in-the-repeated-forced-swim-stress-mouse-model
#14
Takashi Takeuchi, Kana Matsunaga, Akihiko Sugiyama
We investigated the antidepressant-like effect of lactoferrin (Lf) in a repeated forced-swim test (FST) stress mouse model. FST was performed on days 1, 2, 7 and 14. Bovine Lf (bLf) or bovine serum albumin (BSA) was supplemented at 1% to the commercial diet after the first FST throughout the experimental period. The FST-control and FST+BSA group showed a marked increase in immobility time on day 2, which remained increased up to the 14th day, while the FST+bLf group showed a significant lower immobility time...
September 21, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28930913/the-effect-of-lactoferrin-and-pepsin-treated-lactoferrin-on-iec-6-cell-damage-induced-by-clostridium-difficile-toxin-b
#15
Kosuke Otake, Norio Sato, Ayako Kitaguchi, Takayuki Irahara, Satoru Murata, Keiichiro Shiraga, Yuichi Ogawa, Takahiro K Fujiwara, Kaoru Koike, Hiroyuki Yokota
Clostridium difficile infections (CDI) have recently increased worldwide. Some CDI progress to fulminant and recurrent CDI and are associated with high mortality and morbidity. CD produces toxins A and B, which cause intestinal mucosal damage, although toxin B exhibits greater cytotoxicity. Pepsin-treated lactoferrin (PLF) is the decomposed product of lactoferrin (LF), a multifunctional glycoprotein with anti-inflammatory properties. Here, we investigate the effects of LF and PLF in toxin B-stimulated rat intestinal epithelial (IEC-6) cells...
September 19, 2017: Shock
https://www.readbyqxmd.com/read/28928459/neutrophil-polarization-by-il-27-as-a-therapeutic-target-for-intracerebral-hemorrhage
#16
Xiurong Zhao, Shun-Ming Ting, Chin-Hsuan Liu, Guanghua Sun, Marian Kruzel, Meaghan Roy-O'Reilly, Jaroslaw Aronowski
Shortly after intracerebral hemorrhage, neutrophils infiltrate the intracerebral hemorrhage-injured brain. Once within the brain, neutrophils degranulate, releasing destructive molecules that may exacerbate brain damage. However, neutrophils also release beneficial molecules, including iron-scavenging lactoferrin that may limit hematoma/iron-mediated brain injury after intracerebral hemorrhage. Here, we show that the immunoregulatory cytokine interleukin-27 is upregulated centrally and peripherally after intracerebral hemorrhage...
September 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28926582/selection-of-possible-signature-peptides-for-the-detection-of-bovine-lactoferrin-in-infant-formulas-by-lc-ms-ms
#17
Mingmei Yuan, Cong Feng, Shouyun Wang, Weiwei Zhang, Mo Chen, Hong Jiang, Xuesong Feng
An LC-MS/MS assay based on a signature peptide was developed and fully validated for the quantitation of bovine lactoferrin in infant formulas. Three unreported signature peptides were derived and identified from the tryptic peptides of bovine lactoferrin. The peptide ETTVFENLPEK was used for quantification based on assay performance. The blank matrix camel milk powder and bovine lactoferrin protein standards were mixed and spiked with stable isotope-labeled internal standard to establish a calibration curve...
2017: PloS One
https://www.readbyqxmd.com/read/28922328/minor-salivary-gland-transplantation-for-severe-dry-eyes
#18
Tais Hitomi Wakamatsu, Ana Estela Besteti Pires Ponce SantʼAnna, Priscila Cardoso Cristovam, Venâncio Avancini Ferreira Alves, Alda Wakamatsu, José Alvaro Pereira Gomes
Dry eye is a multifactorial disease comprising a wide spectrum of ocular surface alterations and symptoms of discomfort. In most patients with aqueous-deficient dry eye, pharmaceutical tear substitutes are used to control symptoms and prevent ocular surface damage. However, in severe dry eye conditions caused by cicatricial disorders, such as Stevens-Johnson syndrome and ocular cicatricial mucous membrane pemphigoid, noninvasive treatments are insufficient, and patients are at risk of developing complications that can lead to blindness...
November 2017: Cornea
https://www.readbyqxmd.com/read/28916002/characterization-of-immune-response-in-staphylococcus-aureus-chronically-infected-bovine-mammary-glands-during-active-involution
#19
Carolina S Andreotti, Celina Baravalle, Sofía C Sacco, Melisa Lovato, Elizabet A L Pereyra, María S Renna, Hugo H Ortega, Luis F Calvinho, Bibiana E Dallard
The aim of this study was to characterize the immune response in Staphylococcus aureus chronically infected bovine mammary glands during active involution. Twenty-one Holstein non-pregnant cows in late lactation either uninfected or with chronic naturally acquired S. aureus intramammary infections (IMI) were included in this study. Cows were slaughtered at 7, 14 and 21 d after cessation of milking and samples for immunohistochemical analysis were taken. Protein expression of toll-like receptor 2 (TLR2) and TLR4 was significantly higher in S...
October 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/28914813/lactoferrin-a-natural-glycoprotein-involved-in-iron-and-inflammatory-homeostasis
#20
REVIEW
Luigi Rosa, Antimo Cutone, Maria Stefania Lepanto, Rosalba Paesano, Piera Valenti
Human lactoferrin (hLf), an iron-binding multifunctional cationic glycoprotein secreted by exocrine glands and by neutrophils, is a key element of host defenses. HLf and bovine Lf (bLf), possessing high sequence homology and identical functions, inhibit bacterial growth and biofilm dependently from iron binding ability while, independently, bacterial adhesion to and the entry into cells. In infected/inflamed host cells, bLf exerts an anti-inflammatory activity against interleukin-6 (IL-6), thus up-regulating ferroportin (Fpn) and transferrin receptor 1 (TfR1) and down-regulating ferritin (Ftn), pivotal actors of iron and inflammatory homeostasis (IIH)...
September 15, 2017: International Journal of Molecular Sciences
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