Bovine vitreous body and aorta contain extractable leukocyte elastase inhibitors, which were purified by gel filtration and affinity chromatography on agarose-pancreatic elastase. The purified inhibitor preparation from aorta was resolved by polyacrylamide gel electrophoresis into a main band migrating slightly faster than commercial Trasylol and a more weakly stained band migrating close to chymotrypsinogen. The purified inhibitor preparation from both sources inhibited, in a competitive fashion, purified human leukocyte elastase and was ineffective against bovine trypsin and leukocyte cathepsin G or collagenase. These inhibitors from vitreous body and aorta were distinguishable by several criteria from serum inhibitors.
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http://dx.doi.org/10.3109/02713688808995738 | DOI Listing |
Narra J
December 2024
Department of Medicine, Faculty of Medicine, Universitas Sebelas Maret, Surakarta, Indonesia.
Skin aging is one of the degenerative processes influenced by tyrosinase, elastase, collagenase, hyaluronidase, and matrix metalloproteinase-9 (MMP9) activity. One promising avenue for discovering antiaging therapeutics is the peptides from the spine. The aim of this study was to explore the potential of peptides from spine as a multitarget inhibitor for recombinant antiaging therapies through in silico approaches.
View Article and Find Full Text PDFCurr Vasc Pharmacol
January 2025
Department of Pharmacy, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.
Neutrophil elastase (NE), a major protease in neutrophils, is important in promoting inflammation and multiple pathological processes. While NE is released abundantly in ischemiareperfusion (I/R) injury, the intricate relationship between NE and I/R injury remains unclear. We examine several aspects of how NE is involved in I/R injury.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, Yunnan, China. Electronic address:
Most Kunitz inhibitors exhibit serine protease inhibitory activity, but limited information is available on the regulation of platelet function. Herein, we report the purification and characterization of a novel single Kunitz domain inhibitor (Sibanin) from the salivary glands of the black fly Simulium bannaense. Recombinant Sibanin prolonged activated partial thromboplastin time and prothrombin time, and exhibited high-affinity binding to FXa and elastase with a KD of 5.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Shaanxi Key Laboratory of Research and Utilization of Resource Plants on the Loess Plateau, College of Life Sciences, Yan'an University, Yan'an 716000, China.
As the antibiotic resistance of pathogens becomes increasingly severe, it is becoming more feasible to use methods that suppress the virulence of pathogens rather than exerting selective pressure on their growth. , a dangerous opportunistic pathogen, infects hosts by producing multiple virulence factors, which are regulated by quorum-sensing (QS) systems, including the systems, systems, and systems. This study used the chromosome transcription fusion reporter model to screen the traditional Chinese medicine monomer library and found that bakuchiol can effectively inhibit the system and related virulence phenotypes of , including the production of virulence factors (pyocyanin, hydrogen cyanide, elastase, and lectin) and motility (swarming, swimming, and twitching motility) without affecting its growth.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
Neutrophil extracellular traps (NETs) formation is a key process in inflammatory diseases like gout, but the underlying molecular mechanisms remain incompletely understood. This study aimed to establish a model to examine the formation of NETs induced by monosodium urate (MSU) and phorbol 12-myristate 13-acetate (PMA) and to elucidate their molecular pathways. Laser confocal microscopy was used to visualize NET formation, while flow cytometry was employed to detect reactive oxygen species (ROS) production.
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