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Human cathelicidin LL-37 rapidly disrupted colonic epithelial integrity.
Biochim Biophys Acta Biomembr
January 2025
Faculty of Veterinary Medicine, University of Calgary, Canada. Electronic address:
The intestinal barrier, held together by epithelial cells and intercellular tight junction (TJ) proteins, prevents the penetration of microbial pathogens. Concurrently, intestinal epithelial cells secrete antimicrobial peptides, including cathelicidin. Cathelicidin has direct antibacterial and immunomodulatory functions, although its role in intestinal integrity remains elusive.
View Article and Find Full Text PDFUnderstanding Predictors of Crohn's Disease: Determinants of Altered Barrier Function in Pre-Disease Phase of Crohn's Disease.
J Can Assoc Gastroenterol
February 2024
Department of Medicine, Division of Gastroenterology, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada.
The pathogenesis of Crohn's disease (CD) remains unknown. The current working theory is that genetic susceptibility influences host-microbe interactions, resulting in chronic inflammation. Case-control studies fail to explain the triggers or pathogenesis of the disease, notably due to confounding factors in patients with established disease.
View Article and Find Full Text PDFChromatin enables precise and scalable gene regulation with factors of limited specificity.
Proc Natl Acad Sci U S A
January 2025
Institute of Science and Technology Austria, AT-3400 Klosterneuburg, Austria.
Biophysical constraints limit the specificity with which transcription factors (TFs) can target regulatory DNA. While individual nontarget binding events may be low affinity, the sheer number of such interactions could present a challenge for gene regulation by degrading its precision or possibly leading to an erroneous induction state. Chromatin can prevent nontarget binding by rendering DNA physically inaccessible to TFs, at the cost of energy-consuming remodeling orchestrated by pioneer factors (PFs).
View Article and Find Full Text PDFAnti-Syndecan 2 Antibody Treatment Reduces Edema Formation and Inflammation of Murine Laser-Induced CNV.
Transl Vis Sci Technol
January 2025
Yale Cardiovascular Research Center, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA.
Purpose: Alteration of visual acuity in wet age-related macular degeneration (AMD) is mostly driven by vascular endothelial growth factor A (VEGF-A)-induced edema from leaky newly forming blood vessels below the retina layers. To date, all therapies aimed at alleviation of this process have relied on inhibition of VEGF-A activity. Although effective in preventing vascular leak and edema, this approach also leads to the loss of normal vasculature and multiple related side effects.
View Article and Find Full Text PDFTaurine prevents mitochondrial dysfunction and protects mitochondria from reactive oxygen species and deuterium toxicity.
Amino Acids
January 2025
Laboratory of Molecular Biology and Immunology, Department of Pharmacy, University of Patras, 26500, Rio-Patras, Greece.
Taurine, although not a coding amino acid, is the most common free amino acid in the body. Taurine has multiple and complex functions in protecting mitochondria against oxidative-nitrosative stress. In this comprehensive review paper, we introduce a novel potential role for taurine in protecting from deuterium (heavy hydrogen) toxicity.
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