Search results for "Pulmonary Surfactant-Associated Proteins"

showing 3 items of 3 documents

Proteomics of Galápagos Marine Iguanas Links Function of Femoral Gland Proteins to the Immune System

2020

Femoral glands secrete a wax-like substance on the inner side of lizard hind legs, which is thought to function as a mode of chemical communication. Though the minor volatile fraction is well studied, the major protein fraction remains enigmatic. Here, we use proteomics to analyze proteins in femoral gland secretions of the Galápagos marine iguana. Although we found no evidence for proteins and peptides involved in chemical communication, we found several immune-regulatory proteins which also demonstrate anti-microbial functions. Accordingly, we show that femoral gland proteins and peptides function as a barrier against microbial infection and may prevent the rapid degradation of volatile s…

ProteomicsProteomeProteomicsBiochemistryAnalytical ChemistryAnti-Infective AgentsTandem Mass Spectrometrydatabase designprotease inhibitor protein identificationLungSkin0303 health sciencesMuscles030302 biochemistry & molecular biologyBrainHigh-Throughput Nucleotide SequencingHeartBlood proteinsanimal modelsmarine iguanaBiochemistryOrgan SpecificityProteomeEcuadorBacillus subtilisPulmonary Surfactant-Associated ProteinsGalectinsAntileukoproteinaseBiologyprotease inhibitor03 medical and health sciencesproteomicsImmune systemfemoral glandsevolutionEndopeptidasesEscherichia coliAnimalsHumanstissuesMolecular Biology030304 developmental biologyGalectinInnate immune systemChemotactic FactorsResearchMyocardiumImmunity Innateimmune systemIguanasMuramidaseApoproteinsTranscriptomeFunction (biology)Molecular & Cellular Proteomics
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Humoral autoreactivity directed against surfactant protein-A (SP-A) in rheumatoid arthritis synovial fluids.

2000

SUMMARY SP-A is found principally in the lung, and has been associated with lamellar bodies also found in the synovial joint. Both SP-A and C1q contain collagen-like regions, and SP-A and C1q have some structural similarities, both having a globular head region and a collagen-like tail. Here we are able to show that (i) autoreactivity to SP-A, as expressed by IgG and IgM autoantibodies, is present in synovial fluid (SF) isolated from patients with rheumatoid arthritis (RA); (ii) in absorption experiments only a limited degree of cross-reactivity between autoantibodies reactive with C1q and SP-A is observed; (iii) there is no cross-reactivity between autoantibodies reactive with type II coll…

Pulmonary Surfactant-Associated ProteinsKnee JointProteolipidsImmunologyType II collagenchemical and pharmacologic phenomenamedicine.disease_causeAutoantigensImmunoglobulin GAutoimmunityArthritis RheumatoidRheumatic DiseaseAntigenSynovial jointSynovial FluidmedicineImmunology and AllergySynovial fluidAnimalsHumansskin and connective tissue diseasesAutoantibodiesbiologyPulmonary Surfactant-Associated Protein AChemistryComplement C1qAutoantibodyPulmonary Surfactantsmedicine.anatomical_structureImmunoglobulin MImmunoglobulin MImmunoglobulin GImmunologybiology.proteinBinding Sites AntibodyCollagenPeptidesChickensDimerizationClinical and experimental immunology
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Size influences the effect of hydrophobic nanoparticles on lung surfactant model systems

2013

Item does not contain fulltext The alveolar lung surfactant (LS) is a complex lipid protein mixture that forms an interfacial monolayer reducing the surface tension to near zero values and thus preventing the lungs from collapse. Due to the expanding field of nanotechnology and the corresponding unavoidable exposure of human beings from the air, it is crucial to study the potential effects of nanoparticles (NPs) on the structural organization of the lung surfactant system. In the present study, we investigated both, the domain structure in pure DPPC monolayers as well as in lung surfactant model systems. In the pure lipid system we found that two different sized hydrophobic polymeric nanopa…

Systems BiophysicsPhase transitionPulmonary Surfactant-Associated ProteinsMaterials science12-DipalmitoylphosphatidylcholineSwineVesicleBiophysicstechnology industry and agricultureNanoparticleMembranes ArtificialNanotechnologyBiological membraneModels BiologicalPhase TransitionSurface tensionPulmonary surfactantChemical engineeringPhase (matter)MonolayerAnimalsNanoparticlesHydrophobic and Hydrophilic InteractionsNanomedicine Radboud Institute for Molecular Life Sciences [Radboudumc 19]
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