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Lactoferrin

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https://www.readbyqxmd.com/read/28231073/gene-expression-profiles-suggest-iron-transport-pathway-in-the-lactating-human-epithelial-cell
#1
Chenxi Cai, Peter Eck, James K Friel
OBJECTIVES: The molecular background of iron excretion into breast milk has not been determined in humans. We determined the expression of known iron transporters in mRNA extracted from human milk fat globules to deduce which known transporters are responsible for iron excretion into human milk. METHODS: The expression of iron transporters in mRNA from human milk fat globules and mouse mammary epithelial cell lines was determined by quantitative real-time polymerase chain reaction...
March 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28228969/prevention-and-treatment-of-neonatal-nosocomial-infections
#2
REVIEW
Jayashree Ramasethu
Nosocomial or hospital acquired infections threaten the survival and neurodevelopmental outcomes of infants admitted to the neonatal intensive care unit, and increase cost of care. Premature infants are particularly vulnerable since they often undergo invasive procedures and are dependent on central catheters to deliver nutrition and on ventilators for respiratory support. Prevention of nosocomial infection is a critical patient safety imperative, and invariably requires a multidisciplinary approach. There are no short cuts...
2017: Maternal Health, Neonatology and Perinatology
https://www.readbyqxmd.com/read/28220120/neutrophil-extracellular-traps-and-its-implications-in-inflammation-an-overview
#3
REVIEW
Vidal Delgado-Rizo, Marco A Martínez-Guzmán, Liliana Iñiguez-Gutierrez, Alejandra García-Orozco, Anabell Alvarado-Navarro, Mary Fafutis-Morris
In addition to physical barriers, neutrophils are considered a part of the first line of immune defense. They can be found in the bloodstream, with a lifespan of 6-8 h, and in tissue, where they can last up to 7 days. The mechanisms that neutrophils utilize for host defense are phagocytosis, degranulation, cytokine production, and, the most recently described, neutrophil extracellular trap (NET) production. NETs are DNA structures released due to chromatin decondensation and spreading, and they thus occupy three to five times the volume of condensed chromatin...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28217556/group-b-streptococcus-induces-neutrophil-recruitment-to-gestational-tissues-and-elaboration-of-extracellular-traps-and-nutritional-immunity
#4
Vishesh Kothary, Ryan S Doster, Lisa M Rogers, Leslie A Kirk, Kelli L Boyd, Joann Romano-Keeler, Kathryn P Haley, Shannon D Manning, David M Aronoff, Jennifer A Gaddy
Streptococcus agalactiae, or Group B Streptococcus (GBS), is a gram-positive bacterial pathogen associated with infection during pregnancy and is a major cause of morbidity and mortality in neonates. Infection of the extraplacental membranes surrounding the developing fetus, a condition known as chorioamnionitis, is characterized histopathologically by profound infiltration of polymorphonuclear cells (PMNs, neutrophils) and greatly increases the risk for preterm labor, stillbirth, or neonatal GBS infection...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28217373/update-on-clinical-and-research-application-of-fecal-biomarkers-for-gastrointestinal-diseases
#5
REVIEW
Imran Siddiqui, Hafsa Majid, Shahab Abid
Gastrointestinal (GI) diseases comprise a large spectrum of clinical conditions ranging from indigestion to inflammatory bowel diseases (IBDs) and carcinomas. Endoscopy is the usual method employed to diagnose these condition. Another noninvasive way to assess and diagnose GI conditions are fecal biomarkers. Fecal biomarkers provide information regarding a specific disease process and are perhaps more acceptable to clinicians and patients alike because of their non-invasivity compared to endoscopy. Aim of this review was to evaluate the current status of the fecal biomarkers in clinical and research for in GI diseases...
February 6, 2017: World Journal of Gastrointestinal Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28216085/occurrence-of-clostridium-difficile-ribotype-027-in-hospitals-of-silesia-poland
#6
Małgorzata Aptekorz, Anna Szczegielniak, Barbara Wiechuła, Celine Harmanus, Ed Kuijper, Gayane Martirosian
Clostridium difficile is an important healthcare-associated pathogen, responsible for a broad spectrum of diarrheal diseases. The aim of this prospective study was to determine the occurrence of C. difficile infection (CDI), to characterize cultured C. difficile strains and to investigate the association of fecal lactoferrin with CDI. Between January 2013 and June 2014, 148 stool samples were obtained from adult diarrheal patients (C. difficile as a suspected pathogen) hospitalized in different healthcare facilities of 15 Silesian hospitals...
February 12, 2017: Anaerobe
https://www.readbyqxmd.com/read/28204812/the-lactoferricin-b-derived-peptide-lfb17-34-induces-melanogenesis-in-b16f10-cells
#7
Hsiu-Chin Huang, Hsuan Lin, Min-Chuan Huang
Lactoferricin B (LfcinB), a peptide of bovine lactoferrin (LfB), exhibits multiple biological functions, including antimicrobial, antiviral, antioxidant and immunomodulatory activities. However, the role of LfcinB-related peptides in melanogenesis remains unclear. In this study, a set of five LfcinB-related peptides was examined. We found that LfB17‑34, an 18-mer LfcinB-derived peptide, increased melanogenesis in B16F10 melanoma cells without significantly affecting cell viability. LfB17‑34 increased in vitro tyrosinase activity and melanin content in a dose-dependent manner...
March 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28203278/efficacy-of-granulocyte-and-monocyte-apheresis-for-antibiotic-refractory-pouchitis-after-proctocolectomy-for-ulcerative-colitis-an-open-label-prospective-multicentre-study
#8
Takayuki Yamamoto, Toshiaki Tanaka, Tadashi Yokoyama, Takahiro Shimoyama, Hiroki Ikeuchi, Motoi Uchino, Toshiaki Watanabe
BACKGROUND: Granulocyte and monocyte apheresis (GMA) has shown therapeutic efficacy in active ulcerative colitis (UC). We thought that in patients with pouchitis after proctocolectomy for UC, GMA might produce immunological effects in the intestinal mucosa, and improve clinical symptoms. This prospective study was to evaluate the efficacy of GMA for antibiotic-refractory pouchitis after proctocolectomy for UC. METHODS: A total of 13 patients with pouchitis disease activity index (PDAI) > 7 unresponsive to 2 weeks of antibiotic therapy were included...
February 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/28186858/lactoferrin-researchers-descend-on-nagoya-castle
#9
David B Alexander, Hans J Vogel, Hiroyuki Tsuda
No abstract text is available yet for this article.
February 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28185076/prebiotic-effects-of-bovine-lactoferrin-on-specific-probiotic-bacteria
#10
Po-Wen Chen, Zhen-Shu Liu, Tai-Chen Kuo, Min-Chi Hsieh, Zhe-Wei Li
Bovine lactoferrin (bLf) is a natural iron-binding protein and it has been suggested to be a prebiotic agent, but this finding remains inconclusive. This study explores the prebiotic potential of bLf in 14 probiotics. Initially, bLf (1-32 mg/mL) treatment showed occasional and slight prebiotic activity in several probiotics only during the late experimental period (48, 78 h) at 37 °C. We subsequently supposed that bLf exerts stronger prebiotic effects when probiotic growth has been temperately retarded...
February 9, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28183165/evaluation-of-microbiological-cellular-and-risk-factors-associated-with-subclinical-mastitis-in-female-buffaloes
#11
Emmanuella Oliveira Moura, Adriano Henrique do Nascimento Rangel, Maria Celeste Nunes de Melo, Luiz Henrique Fernandes Borba, Dorgival Morais de Lima Júnior, Luciano Patto Novaes, Stela Antas Urbano, Júlio César de Andrade Neto
Objective: This study aimed to evaluate the microbiological and cellular milk profile for the diagnosis of subclinical mastitis in female buffaloes and to assess risk factors for predisposition of the disease. Methods: Analyses were carried out by standard plate count (SPC), identification of species and antibiotic resistance, somatic cell count (SCC), electrical conductivity of milk (ECM), and Lactoferrin content in milk (Lfe). Teat cups were swabbed to evaluate risk factors, observing hyperkeratosis, milking vacuum pressure and cleanliness of the site...
February 1, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28178997/effect-of-oxidative-stress-induced-by-intracranial-iron-overload-on-central-pain-after-spinal-cord-injury
#12
Fan Xing Meng, Jing Ming Hou, Tian Sheng Sun
BACKGROUND: Central pain (CP) is a common clinical problem in patients with spinal cord injury (SCI). Recent studies found the pathogenesis of CP was related to the remodeling of the brain. We investigate the roles of iron overload and subsequent oxidative stress in the remodeling of the brain after SCI. METHODS: We established a rat model of central pain after SCI. Rats were divided randomly into four groups: SCI, sham operation, SCI plus deferoxamine (DFX) intervention, and SCI plus nitric oxide synthase (NOS) inhibitor treatment...
February 8, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28178421/lactoferrin-interacts-with-splunc1-to-attenuate-lipopolysaccharide-induced-inflammation-of-human-nasal-epithelial-cells-via-down-regulated-mek1-2-mapk-signaling
#13
Yung-An Tsou, Yu-Tong Tung, Tsu-Fang Wu, Gary Ro-Lin Chang, Han-Chien Chen, Chia-Der Lin, Chih-Ho Lai, Hsiao-Ling Chen, Chuan-Mu Chen
The short palate, lung, and nasal epithelium clone 1 (SPLUNC1) protein is an important innate material in the upper airway, and lactoferrin (LF) aids the innate functions in humans. In this study, an nasal epithelial model was used to investigate how LF modulates SPLUNC1 to reduce the inflammatory process mediated by lipopolysaccharide (LPS). The inflammation of human RPMI-2650 cells was induced by LPS to evaluate SPLUNC1 expression after treating the cells with bovine LF (bLF). The interaction pathway between LF and SPLUNC1 in LPS-induced inflammation was further investigated...
February 8, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28177763/lactoferrin-potentially-facilitates-glucose-regulation-and-enhances-the-incretin-effect
#14
Yuta Maekawa, Akihiko Sugiyama, Takashi Takeuchi
Lactoferrin (Lf) is known for its physiologically pleiotropic properties. In this study, we investigated whether Lf affects glycemic regulation, including glucose absorption from the small intestine. Bovine Lf (bLf, 100 mg/kg body mass) was administered to rats by intraperitoneal injection before intravenous (intravenous glucose tolerance test, IVGTT) or oral glucose administration (oral glucose tolerance test, OGTT). With IVGTT, bLf pretreatment had no significant effect on plasma levels of glucose or insulin...
February 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28177760/ceruloplasmin-derived-peptide-is-the-strongest-regulator-of-oxidative-stress-and-leukotriene-synthesis-in-neutrophils
#15
Ekaterina Golenkina, Alexey Livenskyi, Galina Viryasova, Yulia Romanova, Galina Sud'ina, Alexey Sokolov
Ceruloplasmin, an acute-phase protein, can affect the activity of leukocytes through its various enzymatic activities and protein-protein interactions (with lactoferrin, myeloperoxidase, eosinophil peroxidase, serprocidins, and 5-lipoxygenase (5-LOX), among others). However, the molecular mechanisms of ceruloplasmin activity are not clearly understood. In this study, we tested the ability of two synthetic peptides, RPYLKVFNPR (883-892) (P1) and RRPYLKVFNPRR (882-893) (P2), corresponding to the indicated fragments of the ceruloplasmin sequence, to affect neutrophil activation...
January 10, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28172842/p307-fecal-lactoferrin-levels-are-stable-during-pregnancy
#16
B Koslowsky, D M Livovsky, E Goldin, A Bar-Gil Shitrit
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28170415/characterization-of-recombinant-human-lactoferrin-n-glycans-expressed-in-the-milk-of-transgenic-cows
#17
Annabelle Le Parc, Sercan Karav, Camille Rouquié, Elizabeth A Maga, Apichaya Bunyatratchata, Daniela Barile
Lactoferrin (LF) is one of the most abundant bioactive glycoproteins in human milk. Glycans attached through N-glycosidic bonds may contribute to Lactoferrin functional activities. In contrast, LF is present in trace amounts in bovine milk. Efforts to increase LF concentration in bovine milk led to alternative approaches using transgenic cows to express human lactoferrin (hLF). This study investigated and compared N-glycans in recombinant human lactoferrin (rhLF), bovine lactoferrin (bLF) and human lactoferrin by Nano-LC-Chip-Q-TOF Mass Spectrometry...
2017: PloS One
https://www.readbyqxmd.com/read/28169560/bovine-lactoferrin-and-lactoferricin-exert-antitumor-activities-on-human-colorectal-cancer-cells-ht-29-by-activating-various-signaling-pathways
#18
Rulan Jiang, Bo Lönnerdal
Lactoferrin (Lf) is an iron-binding glycoprotein that is present at high concentrations in milk. Bovine lactoferricin (LfcinB) is a peptide fragment generated by pepsin proteolysis of bovine lactoferrin (bLf). LfcinB consists of amino acid residues 17-41 proximal to the N-terminus of bLf and a disulfide bond between residues 19 and 36, forming a loop. Both bLf and LfcinB have been demonstrated to have antitumor activities. Colorectal cancer is the second most common cause of cancer death in developed countries...
February 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28169552/lactoferrin-and-the-lactoferrin-sophorolipids-assembly-can-be-internalized-by-dermal-fibroblasts-and-regulate-gene-expression
#19
Rulan Jiang, Yasushi A Suzuki, Xiaogu Du, Bo Lönnerdal
Lactoferrin (Lf) is an iron-binding multifunctional protein, mainly present in external secretions. Lf is known to penetrate skin and may thus exert its multiple functions in skin. Sophorolipids (SLs) are glycolipid biosurfactants, which have been shown to enhance absorption of commercial bovine Lf (CbLf) in model skin via forming an assembly with CbLf. In this study, uptake and post-internalization localization of bovine Lf (bLf), CbLf, and human Lf (hLf) with or without forming assemblies with SLs in human dermal fibroblasts (HDFn) were determined using (125)I-labeled Lfs and confocal microscopy, respectively...
February 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28169551/advances-in-lactoferrin-research-concerning-bovine-mastitis
#20
Kei-Ichi Shimazaki, Kazuhiro Kawai
Lactoferrin is a multifunctional, iron-binding glycoprotein found in milk and other exocrine secretions. Lactoferrin in milk plays vital roles in the healthy development of newborn mammals, and is also an innate resistance factor involved in the prevention of mammary gland infection by microorganisms. Inflammation of the udder because of bacterial infection is referred to as mastitis. There have been many investigations into the relationships between lactoferrin and mastitis, which fall into several categories...
February 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
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