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Filename: controllers/Detail.php
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Human β-defensin-2 (HBD-2), an antimicrobial peptide produced by epithelial cells, plays an important role in the body's innate and adaptive immunity. High-mobility group N2 (HMGN2), a member of the HMG superfamily, binds to chromatin to modulate gene transcription. Previously, we have shown that HMGN2 acts as a positive modulator of the signal transduction cascade in the process of inducible human β-defensin expression. In our current study, we found that down-regulation of HMGN2 reduces the expression level of murine β-defensin-3 and -4 (mBD-3 and mBD-4), but not mBD-1 upon LPS stimulation in various tissues of pregnant ICR mice, as well as in embryonic and neonatal lungs and livers at different developmental time points. In the control group, murine HMGN2 expression decreased, while mBD-1 and mBD-4 expression increased slightly during development. In the LPS-treated groups, murine HMGN2 and mBD-1 expression did not change significantly, whereas mBD-3 and mBD-4 expression significantly increased in maternal, embryonic, and neonatal tissues, especially the mBD-3 expression. HMGN2 shRNA interference led to decreased mBD-3 and mBD-4 expression, while mBD-1 expression did not significantly change. These results demonstrate that HMGN2 is a component of the LPS-induced mouse β-defensin response.
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http://dx.doi.org/10.1007/s10753-011-9335-3 | DOI Listing |
Exp Mol Pathol
December 2021
Unidad de Investigación Biomédica, Delegación Zacatecas, Instituto Mexicano del Seguro Social, IMSS, Zacatecas, Mexico.. Electronic address:
Unlabelled: The aim of this study was to analyze the expression of mBD4, mBD3 and CRAMP in joint of mice with type II collagen-induced arthritis/CIA and to explore its possible association with IL-10, IL-4, IFN-γ, IL-17, MMP3, RANK/RANKL/OPG and histological parameters.
Methods: CIA was induced in 44 DBA/1 J mice. The joints from mice were classified into the onset, peak and remission phase of CIA.
Peptides
August 2021
CONACYT-Academic Unit of Chemical Sciences, University Autonomous of Zacatecas, Zacatecas, Mexico. Electronic address:
Epidemiological studies have associated long-term exposure to environmental air pollution particulate matter (PM) with the development of diverse health problems. They include infectious respiratory diseases related to the deregulation of some innate immune response mechanisms, such as the host defense peptides' expression. Herein, we evaluated in BALB/c mice the effect of long-standing exposure (60 days) to urban-PM from the south of Mexico City, with aerodynamic diameters below 2.
View Article and Find Full Text PDFInvest Ophthalmol Vis Sci
February 2013
College of Optometry, University of Houston, 505 J. Davis Armistead Building, 4901Calhoun Road, Houston, TX 77204-2020, USA.
Purpose: To investigate the expression and/or function of toll-like receptors (TLRs) and antimicrobial peptides (AMPs) in dry eye inflammation.
Methods: Experimental dry eye (EDE) was induced in C57BL/6 mice and TLR mRNA and protein expression were determined at the ocular surface and lacrimal gland. TLR agonist cocktail was applied to the ocular surface in untreated (UT), corneal scratched, and EDE mice.
Inflammation
April 2012
Research Unit of Infection and Immunity, West China School of Preclinical & Forensic Medicine, Chengdu, Sichuan 610041, China.
Human β-defensin-2 (HBD-2), an antimicrobial peptide produced by epithelial cells, plays an important role in the body's innate and adaptive immunity. High-mobility group N2 (HMGN2), a member of the HMG superfamily, binds to chromatin to modulate gene transcription. Previously, we have shown that HMGN2 acts as a positive modulator of the signal transduction cascade in the process of inducible human β-defensin expression.
View Article and Find Full Text PDFBiol Reprod
January 2003
GERM-INSERM U.435, Campus de Beaulieu, Université de Rennes I, 35042 Rennes Cedex, Bretagne, France.
Defensins are antimicrobial peptides that play a major role in innate immunity. Using reverse transcriptase-polymerase chain reaction, immunochemistry, or both, we performed a search of all presently known defensins in rat testis, epididymis, and isolated testicular cells; in mouse testis and epididymis; and in human testis and ejaculates. In the rat, all alpha- and beta-defensins except RNP-4 were expressed within the testis, whereas alpha-defensins RNP1-2, RNP-4, and beta-defensins RBD-1 and RBD-2 were present within the epididymis.
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