Hyaluronic acid reduces inflammation and crevicular fluid IL-1β concentrations in peri-implantitis: a randomized controlled clinical trial

Sanchez-Fernandez, Elena,Magan-Fernandez, Antonio,O'Valle, Francisco,Bravo, Manuel,Mesa, Francisco Korean Academy of Periodontology 2020 Journal of Periodontal & Implant Science Vol.50 No.-

Purpose: This study investigated the effects of hyaluronic acid (HA) on peri-implant clinical variables and crevicular concentrations of the proinflammatory biomarkers interleukin (IL)-1β and tumor necrosis factor (TNF)-α in patients with peri-implantitis. Methods: A randomized controlled trial was conducted in peri-implantitis patients. Patients were randomized to receive a 0.8% HA gel (test group), an excipient-based gel (control group 1), or no gel (control group 2). Clinical periodontal variables and marginal bone loss after 0, 45, and 90 days of treatment were assessed. IL-1β and TNF-α levels in crevicular fluid were measured by enzyme-linked immunosorbent assays at baseline and after 45 days of treatment. Clustering analysis was performed, considering the possibility of multiple implants in a single patient. Results: Sixty-one patients with 100 dental implants were assigned to the test group, control group 1, or control group 2. Probing pocket depth (PPD) was significantly lower in the test group than in both control groups at 45 days (control 1: 95% CI, -1.66, -0.40 mm; control 2: 95% CI, -1.07, -0.01 mm) and 90 days (control 1: 95% CI, -1.72, -0.54 mm; control 2: 95% CI, -1.13, -0.15 mm). There was a trend towards less bleeding on probing in the test group than in control group 2 at 90 days (P=0.07). Implants with a PPD ≥5 mm showed higher levels of IL-1β in the control group 2 at 45 days than in the test group (P=0.04). Conclusions: This study demonstrates for the first time that the topical application of a HA gel in the peri-implant pocket and around implants with peri-implantitis may reduce inflammation and crevicular fluid IL-1β levels.

Un siglo de humor en La columna periodistica de autores gallegos: hacia una columna Ludica de autor y personaje

( Carlos Fernandez Gonzalez ) 한국스페인어문학회(구 한국서어서문학회) 2011 스페인어문학 Vol.0 No.61

El proposito de este articulo es analizar el humor como recurso estilistico, retorico y narrativo (es decir, literario) en la columna periodistica. Para ello, se ha seleccionado a cuatro autores gallegos que cubren un periodo temporal cercano a un siglo, el transcurrido desde principios del siglo XX hasta la actualidad: Julio Camba, Ricardo Outeirino, Wenceslao Fernandez Florez y Manuel Jabois. Mas en concreto, el presente trabajo pretende examinar los resortes empleados por estos autores para presentar a sus lectores informacion, analisis y opinion en clave humoristica, asi como los diferentes grados de protagonismo del autor como personaje. Se procura definir, al mismo tiempo, la evolucion general experimentada por el genero proteico denominado columna (desde un esquema basico facilmente reconocible: informacion-opinion-humor) y su tendencia actual hacia lo que se propone denominar columna ludica, que otorga al humor relevancia definitiva y encuentra especificidad, ademas, en la presentacion indisimulada de su autor como personaje protagonista. Para todo ello, se opta por una aproximacion teorica transversal y eclectica, integradora, articulada en torno a ideas, conceptos y propuestas para el analisis proporcionados por la teoria de los generos literarios y de los generos periodisticos, la narratologia, la retorica y el analisis del discurso.

Identification of duck IL-4 and its inhibitory effect on IL-17A expression in <i>R. anatipestifer-</i>stimulated splenic lymphocytes

Fernandez, Cherry P.,Afrin, Fahmida,Flores, Rochelle A.,Kim, Woo H.,Jeong, Jipseol,Kim, Suk,Lillehoj, Hyun S.,Min, Wongi Elsevier 2018 Molecular immunology Vol.95 No.-

<P>As the dysregulation of IL-17 is implicated in the pathogenesis of various autoimmune and inflammatory diseases, the suppression of IL-17 production by Th2 cytokines could alleviate the development of these diseases. Previously, we confirmed that inflammatory cytokines including IL-17A are strongly associated with R. anatipestifer infection, which is one of the most important bacterial pathogens in the duck industry. Here, we found that IL-4 treatment downregulated the expression of IL-17A and IL-17F transcripts in splenic lymphocytes stimulated with R. anatipestifer. Moreover, duck IL-4 (duIL-4) treatment in R. anatipestifer-stimulated lymphocytes suppressed the expression of IL-23p19 and IL-12p40 transcripts compared to untreated and stimulated lymphocytes. Conversely, dulL-4 increased levels of IFN-gamma and IL-10. We identified a full-length dulL-4 cDNA encoding 136 amino acids from ConA-activated splenic lymphocytes that shares 49.3-50% amino acid sequence identity with chicken and quail IL-4 and 21-29.7% with mammalian and piscine homologues. Low or moderate levels of dulL-4 transcript were observed in healthy tissues, including the spleen, bursa, and thymus, whereas dulL-4 expression was higher in the kidney and lung. Levels of dulL-4 were generally upregulated in mitogen-activated splenic lymphocytes but lower in the liver and spleen of R. anatipestifer-infected ducks compared to those of infected chickens. Recombinant dulL-4 promoted nitric oxide synthesis in duck macrophages stimulated by It anatipestifer compared to untreated and stimulated control macrophages. These results demonstrate that IL-4 is an important Th2 cytokine that inhibits inflammatory responses in splenic lymphocytes stimulated with R. anatipestifer.</P>

Downregulation of inflammatory cytokines by berberine attenuates <i>Riemerella anatipestifer</i> infection in ducks

Fernandez, Cherry P.,Afrin, Fahmida,Flores, Rochelle A.,Kim, Woo H.,Jeong, Jipseol,Kim, Suk,Chang, Hong H.,Lillehoj, Hyun S.,Min, Wongi PERGAMON 2017 DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY Vol. No.

<P><B>Abstract</B></P> <P> <I>Riemerella anatipestifer,</I> an important infectious bacterium affecting the duck industry, has 5–75% mortality, depending on strain virulence. We previously demonstrated that proinflammatory cytokines are involved in inflammation during, and regulating susceptibility to, <I>R. anatipestifer</I> infection. We investigated the effects of the anti-inflammatory compound berberine in duck splenic lymphocytes stimulated with killed <I>R. anatipestifer,</I> and in <I>R. anatipestifer-</I>infected ducks. IL-17A, IL-17F, and IL-1β transcripts were downregulated, and IFN-γ and IL-10 transcripts enhanced, in berberine-treated stimulated splenic lymphocytes, compared to stimulated untreated splenic lymphocytes. Similarly, IL-17A, IL-17F, IL-6, and IL-1β expressions were significantly reduced, and IFN-γ and IL-10 expressions significantly upregulated, in spleens and livers of <I>R. anatipestifer-</I>infected berberine-treated ducks, compared to infected untreated birds. Moreover, infected and treated birds showed increased survival rates and significantly decreased bacterial burdens compared to infected untreated birds, confirming that inflammatory cytokines are strongly associated with <I>R. anatipestifer</I> infection in ducks.</P> <P><B>Highlights</B></P> <P> <UL> <LI> <I>R. anatipestifer</I> infection is ameliorated by inflammatory cytokine suppression. </LI> <LI> Expression levels of IL-17A, IL-17F, IL-1β or IL-6 mRNA were significantly reduced by berberine treatment. </LI> <LI> Expression of anti-inflammatory cytokine IL-10 was enhanced <I>in vitro</I> and <I>in vivo.</I> </LI> <LI> Berberine-treated infected ducks had lower mortality rate and bacterial load. </LI> </UL> </P>

코끼리에 관한 硏究

Fernandez, Pedro Villa,김해숙 한국외국어대학 학도호국단 1977 외대 Vol.12 No.1

A Conserved Motif Controls Nuclear Localization of Drosophila Muscleblind

Fernandez-Costa, Juan M.,Artero, Ruben Korean Society for Molecular and Cellular Biology 2010 Molecules and cells Vol.30 No.1

Human Muscleblind-like proteins are alternative splicing regulators that are functionally altered in the RNA-mediated disease myotonic dystrophy. There are different Muscleblind protein isoforms in Drosophila and we previously determined that these have different subcellular localizations in the COS-M6 cell line. Here, we describe the conservation of the sequence motif KRAEK in isoforms C and E and propose a specific function for this motif. Different Muscleblind isoforms localize to the peri-plasma membrane (MblA), cytoplasm (MblB), or show no preference for the nuclear or cytoplasmic compartment (MblC and MblD) in Drosophila S2 cells transiently transfected with Musclebind expression plasmids. Mutation of the KRAEK motif reduces MblC nuclear localization, whereas fusion of a single KRAEK motif to the heterologous protein ${\beta}$-galactosidase is sufficient to target the reporter protein to the nucleus of S2 cells. This motif is not exclusive to Muscleblind proteins and is detected in several other protein types. Taken together, these results suggest that the KRAEK motif regulates nuclear translocation of Muscleblind and may constitute a new class of nuclear localization signal.

NEW RELATIONSHIPS INVOLVING THE MEAN CURVATURE OF SLANT SUBMANIFOLDS IN S-SPACE-FORMS

Fernandez, Luis M.,Hans-Uber, Maria Belen Korean Mathematical Society 2007 대한수학회지 Vol.44 No.3

Relationships between the Ricci curvature and the squared mean curvature and between the shape operator associated with the mean curvature vector and the sectional curvature function for slant submanifolds of an S-space-form are proved, particularizing them to invariant and anti-invariant submanifolds tangent to the structure vector fields.

Assessing the association of single nucleotide polymorphisms in thyroglobulin gene with age of puberty in bulls

Fernandez, Maria Elena,Goszczynski, Daniel Estanislao,Prando, Alberto Jose,Peral-Garcia, Pilar,Baldo, Andres,Giovambattista, Guillermo,Liron, Juan Pedro Korean Society of Animal Sciences and Technology 2014 한국축산학회지 Vol.56 No.5

Puberty is a stage of sexual development determined by the interaction of many loci and environmental factors. Identification of genes contributing to genetic variation in this character can assist with selection for early pubertal bulls, improving genetic progress in livestock breeding. Thyroid hormones play an important role in sexual development and spermatogenic function. The objective of this study was to evaluate the association between single nucleotide polymorphisms (SNPs) located in thyroglobulin(TG) gene with age of puberty in Angus bulls. Four SNPs were genotyped in 273 animals using SEQUENOM technology and the association between markers and puberty age was analyzed. Results showed a significant association (P < 0.05) between these markers and puberty age estimated at a sperm concentration of 50 million and a progressive motility of 10%. This is the first report of an association of TG polymorphisms with age of puberty in bulls, and results suggest the importance of thyroidal regulation in bovine sexual development and arrival to puberty.

Continuous-wave upconverting nanoparticle microlasers

Fernandez-Bravo, Angel,Yao, Kaiyuan,Barnard, Edward S.,Borys, Nicholas J.,Levy, Elizabeth S.,Tian, Bining,Tajon, Cheryl A.,Moretti, Luca,Altoe, M. Virginia,Aloni, Shaul,Beketayev, Kenes,Scotognella, F Nature Publishing Group UK 2018 Nature nanotechnology Vol.13 No.7

Reducing the size of lasers to microscale dimensions enables new technologies<SUP>1</SUP> that are specifically tailored for operation in confined spaces ranging from ultra-high-speed microprocessors<SUP>2</SUP> to live brain tissue<SUP>3</SUP>. However, reduced cavity sizes increase optical losses and require greater input powers to reach lasing thresholds. Multiphoton-pumped lasers<SUP>4–7</SUP> that have been miniaturized using nanomaterials such as lanthanide-doped upconverting nanoparticles (UCNPs)<SUP>8</SUP> as lasing media require high pump intensities to achieve ultraviolet and visible emission and therefore operate under pulsed excitation schemes. Here, we make use of the recently described energy-looping excitation mechanism in Tm<SUP>3+</SUP>-doped UCNPs<SUP>9</SUP> to achieve continuous-wave upconverted lasing action in stand-alone microcavities at excitation fluences as low as 14 kW cm<SUP>−2</SUP>. Continuous-wave lasing is uninterrupted, maximizing signal and enabling modulation of optical interactions<SUP>10</SUP>. By coupling energy-looping nanoparticles to whispering-gallery modes of polystyrene microspheres, we induce stable lasing for more than 5 h at blue and near-infrared wavelengths simultaneously. These microcavities are excited in the biologically transmissive second near-infrared (NIR-II) window and are small enough to be embedded in organisms, tissues or devices. The ability to produce continuous-wave lasing in microcavities immersed in blood serum highlights practical applications of these microscale lasers for sensing and illumination in complex biological environments.

Expression of the <i>Ciona intestinalis</i> Alternative Oxidase (AOX) in <i>Drosophila</i> Complements Defects in Mitochondrial Oxidative Phosphorylation

Fernandez-Ayala, Daniel J.M.,Sanz, Alberto,Vartiainen, Suvi,Kemppainen, Kia K.,Babusiak, Marek,Mustalahti, Eero,Costa, Rodolfo,Tuomela, Tea,Zeviani, Massimo,Chung, Jongkyeong,O'Dell, Kevin M.C.,Rustin Elsevier 2009 Cell metabolism Vol.9 No.5

<P><B>Summary</B></P><P>Defects in mitochondrial OXPHOS are associated with diverse and mostly intractable human disorders. The single-subunit alternative oxidase (AOX) found in many eukaryotes, but not in arthropods or vertebrates, offers a potential bypass of the OXPHOS cytochrome chain under conditions of pathological OXPHOS inhibition. We have engineered <I>Ciona intestinalis</I> AOX for conditional expression in <I>Drosophila melanogaster.</I> Ubiquitous AOX expression produced no detrimental phenotype in wild-type flies. However, mitochondrial suspensions from AOX-expressing flies exhibited a significant cyanide-resistant substrate oxidation, and the flies were partially resistant to both cyanide and antimycin. AOX expression was able to complement the semilethality of partial knockdown of both <I>cyclope</I> (COXVIc) and the complex IV assembly factor <I>Surf1</I>. It also rescued the locomotor defect and excess mitochondrial ROS production of flies mutated in <I>dj-1</I>β, a <I>Drosophila</I> homolog of the human Parkinson's disease gene <I>DJ1</I>. AOX appears to offer promise as a wide-spectrum therapeutic tool in OXPHOS disorders.</P>