Polyvinyl sponges were implanted subcutaneously on both sides of young female rats. One sponge was infected with 10(8) of either Escherichia coli K-12 F-, Staphylococcus aureus ATCC 25923, or Pseudomonas aeruginosa CDC 7725. P. aeruginosa remained at the inoculum level and S. aureus declined by 1 log, whereas E. coli was reduced 1,000-fold. Only P. aeruginosa was recovered from the blood in 36% of the animals in 24 h and in 20% of the rats in 48 h. The nutrient potential of rat inflammatory fluid was compared to nutrient broth by growth of each bacterium in untreated and heat-inactivated sponge fluids and Trypticase soy broth.
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http://dx.doi.org/10.1128/iai.14.2.483-489.1976 | DOI Listing |
Int J Pharm
January 2025
Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada. Electronic address:
The objective of this study is to address the unanswered question whether sustained supersaturation generated from amorphous solid dispersions (ASDs) formulated in insoluble hydrogel carriers will result in better bioavailability over that of spring-and-parachute type of dissolution profiles of ASDs formulated in water-soluble carriers. This was achieved by investigating the effects of supersaturation generation rates and doses on the extent of absorption (i.e.
View Article and Find Full Text PDFMater Today Bio
February 2025
Department of Urology, Jiangnan University Affiliated Hospital, Medical College of Jiangnan University, Wuxi 214125, China.
Currently, most peripheral nerve injuries are incurable mainly due to excessive reactive oxygen species (ROS) generation in inflammatory tissues, which can further exacerbate localized tissue injury and cause chronic diseases. Although promising for promoting nerve regeneration, stem cell therapy still suffers from abundant intrinsic limitations, mainly including excessive ROS in lesions and inefficient production of growth factors (GFs). Biomaterials that scavenge endogenous ROS and promote GFs secretion might overcome such limitations and thus are being increasingly investigated.
View Article and Find Full Text PDFRegen Biomater
November 2024
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Prince of Songkla University, Hatyai 90110, Thailand.
Alveolar ridge loss presents difficulties for implant placement and stability. To address this, alveolar ridge preservation (ARP) is required to maintain bone and avoid the need for ridge augmentation using socket grafting. In this study, a scaffold for ARP was created by fabricating a 3D porous dense microfiber silk fibroin (mSF) embedded in poly(vinyl alcohol) (PVA), which mimics the osteoid template.
View Article and Find Full Text PDFACS Omega
December 2024
Department of Pharmaceutical Technology, Gazi University, Ankara 06560, Turkey.
Lidocaine (LID), frequently used in dermal applications, is a nonpolar local anesthetic agent that is practically insoluble in water. The main aim of this study is to develop the nanosuspension formulation of LID using the design of experiments (DoE). The improved solubility and dissolution rate provided by nanosizing are expected to result in enhanced dermal bioavailability.
View Article and Find Full Text PDFStress
December 2025
Laboratory of Functional and Structural Biology, Biological Sciences Institute, Federal University of Pará, Belém, Brazil.
Stress occurs as a reaction to mental and emotional pressure, anxiety, or scarring. Chronic stress is defined as constant submission to these moments. It can affect several body systems, increase blood pressure, and weaken immunity, thereby interfering with physiological health processes.
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