Hyaluronic acid was the only glysosaminoglycan detected in the pulmonary secretions of healthy adult rats exposed to inhalation to methylene chloride, but not of control animals. The compound migrated as a single spot with the mobility of standard hyaluronic acid on cellulose acetate electrophoresis and disappeared after digestion with testicular hyaluronidase. Its identification was confirmed by finding hexuronate/hexosamine in a molar ratio of approx. 1. Glucosamine represented over 97% of the total hexosamine, the remaining 3% being galactosamine. No hexose or sulfate could be detected. Sodium dodecyl sulfate--polyacrylamide gel electrophoresis showed no protein associated with this glycosaminoglycan. It appears that the secretion of hyaluronic acid into the airways may be the result of pulmonary inflammation induced by the toxic effects of methylene chloride.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0378-4274(80)90074-0 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A ROS-responsive hydrogel encapsulated with matrix metalloproteinase-13 siRNA nanocarriers to attenuate osteoarthritis progression.
J Nanobiotechnology
January 2025
State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, 210008, People's Republic of China.
RNA interference (RNAi) and oxidative stress inhibition therapeutic strategies have been extensively utilized in the treatment of osteoarthritis (OA), the most prevalent degenerative joint disease. However, the synergistic effects of these approaches on attenuating OA progression remain largely unexplored. In this study, matrix metalloproteinase-13 siRNA (siMMP-13) was incorporated onto polyethylenimine (PEI)-polyethylene glycol (PEG) modified FeO nanoparticles, forming a nucleic acid nanocarrier termed si-Fe NPs.
View Article and Find Full Text PDFHyaluronic Acid Myomodulation in the Treatment of Gummy Smile.
Aesthetic Plast Surg
January 2025
University of Passo Fundo, Passo Fundo, RS, Brazil.
Level of Evidence IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.
View Article and Find Full Text PDFTowards a comprehensive definition of the human fascial system.
J Anat
January 2025
Department of Pathology, New York University Grossman School of Medicine, New York, New York, USA.
The absence of a clear consensus on the definition and significance of fascia and the indiscriminate use of the term throughout the clinical and scientific literature has led to skepticism regarding its importance in the human body. To address this challenge, we propose that: (1) fasciae, and the fascial interstitia within them, constitute an anatomical system, defined as a layered body-wide multiscale network of connective tissue that allows tensional loading and shearing mobility along its interfaces; (2) the fascial system comprises four anatomical organs: the superficial fascia, musculoskeletal (deep) fascia, visceral fascia, and neural fascia; (3) these organs are further composed of anatomical structures, some of which are eponymous; (4) all these fascial organs and their structural components contain variable combinations and arrangements of the four classically defined tissues: epithelial, connective, muscle, and neural; (5) the overarching functions of the fascial system arise from the contrasting biomechanical properties of the two basic types of layers distributed throughout the system: one predominantly collagenous and relatively stiff, the other rich in hyaluronic acid and viscous, allowing for the free flow of fluid; (6) the topographical organization of these layers in different locations is related to local variations in function (e.g.
View Article and Find Full Text PDFConductive hyaluronic acid/phytanic acid hydrogel to deliver recombinant human amelogenin for diabetic wound repair.
Int J Biol Macromol
January 2025
Department of Anatomy, Hunan University of Chinese Medicine, Changsha 410208, China.
Diabetic wounds present a considerable challenge in modern medicine due to their prolonged healing process, driven by sustained inflammation and impaired vascular regeneration. This study introduces a novel hydrogel network through osmosis, utilizing hyaluronic acid (HA) and phytic acid (PA) for their anti-inflammatory and antioxidant properties, respectively. By incorporating recombinant Human Amelogenin (rhAM), known for its angiogenic potential, we aimed to develop the HA-PA-rhAM hydrogel to enhance wound healing in diabetic rats.
View Article and Find Full Text PDFPolydopamine-assisted ion-mediated hyaluronic acid grafting for effective construction of hemocompatible platform with cancer cell recognition.
Int J Biol Macromol
January 2025
MOE Key Laboratory of Bio-Intelligent Manufacturing, Liaoning Key Laboratory of Molecular Recognition and Imaging, School of Bioengineering, Dalian University of Technology, Dalian 116023, PR China. Electronic address:
Surfaces capable of specific biomolecule recognition are essential for cancer theranostics, biosensing, and tissue engineering. However, current grafting methods, critical for dictating the recognition efficiency and biocompatibility of biomaterials, especially hydrophilic polymers, struggle to balance high grafting density with ease of implementation. In pursuit of a simple, effective, and versatile solution, we introduced a polydopamine (PDA)-assisted Ca-mediated grafting strategy using hyaluronic acid (HA) as a model material.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!