The purpose of this study was to investigate the role of neutrophils in ischemic tissue injury and the possible inhibition by pretreatment with FK506, a neutrophilic modulating agent. A dorsal caudally based skin flap (3 x 9 cm) was used as an ischemic injury model in experimental groups. Prior to flap elevation, FK506 at doses of 0.3 mg per kilogram (group 2), 0.5 mg per kilogram (group 3), and 1.0 mg per kilogram (group 4) was given for 3 days intramuscularly. The relationship among neutrophil accumulation (histopathologically), myeloperoxidase (MPO) activity, malondialdehyde (MDA) content (biochemically) of the flap tissue, and flap survival were studied. Skin flaps showed reduced necrosis in the FK506-treated groups (p < 0.08, p < 0.0001, and p < 0.0001 respectively). The increase in accumulation of neutrophils, and MDA and MPO levels (which were induced by ischemia) observed 1 and 24 hours after flap elevation was diminished by FK506 pretreatment. The increased neutrophilic infiltration, and raised tissue MDA content and MPO activity revealed involvement of both free radical production and neutrophils in ischemia. This injury was decreased by FK506, probably by inhibition of neutrophilic chemotaxis, infiltration, and releasing factors.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/00000637-199711000-00011 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Association of Obesity and Skeletal Muscle with Postoperative Survival in Non-Small Cell Lung Cancer.
Radiology
January 2025
From the Department of Radiology (J.H.L.) and Department of Thoracic and Cardiovascular Surgery (J.L., Y.J.J., S.Y.P., J.H.C., Y.S.C., J.K., Y.M.S., H.K.K.), Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea; Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, 115 Irwon-ro, Gangnam-gu, Seoul 06355, Korea (D.K., J.L., S.Y.P., S.K., J.C.); Center for Clinical Epidemiology, Sungkyunkwan University, Samsung Medical Center, Seoul, Korea (D.K., J.C.); Patient-Centered Outcomes Research Institute, Samsung Medical Center, Seoul, Korea (J.L., Y.M.S., S.K., H.K.K., J.C.); and Department of Epidemiology and Medicine, Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Md (J.C.).
Background A comprehensive assessment of skeletal muscle health is crucial to understanding the association between improved clinical outcomes and obesity as defined by body mass index (BMI; calculated as weight in kilograms divided by height in meters squared) in lung cancer, but limited studies have been conducted on this topic. Purpose To investigate the association between BMI-defined obesity and survival in patients with non-small cell lung cancer who underwent curative resection, with a specific focus on the status of skeletal muscle assessed at CT. Materials and Methods This retrospective study investigated Korean patients with non-small cell lung cancer who underwent curative resection between January 2008 and December 2019.
View Article and Find Full Text PDFVat photopolymerization (VPP) is an additive manufacturing method that requires the design of photocurable resins to act as feedstock and binder for the printing of parts, both monolithic and composite. The design of a suitable photoresin is costly and time-consuming. The development of one formulation requires the consumption of kilograms of costly materials, weeks of printing and performance testing, as well as the need to have developers with the expertise and knowledge of the materials used, making the development process cost thousands.
View Article and Find Full Text PDFUrinary Incontinence and Care Seeking Among Wisconsin Women.
Urogynecology (Phila)
February 2025
Department of Population Health Sciences, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI.
Importance: Women who identify as Black or African American are underrepresented in research about pelvic floor disorders.
Objectives: The objectives of this study were to describe the prevalence of and factors associated with urinary incontinence (UI) and UI care-seeking among adult women in a Wisconsin household survey.
Study Design: This was a cross-sectional analysis of data collected by the Survey of the Health of Wisconsin (SHOW).
Standing or Very Low-Intensity Cycling as Sedentary Breaks: Does Physical Activity Level Matter?
J Phys Act Health
January 2025
Laboratory of the Metabolic Adaptations to Exercise under Physiological and Pathological Conditions (AME2P), UE3533, Clermont Auvergne University, Aubiere, France.
Background: Active breaks and very low- to low-intensity exercises such as walking or cycling at an active desk have been shown to significantly counteract the negative effect of prolonged sedentary behaviors. The objective was to investigate the effect of physical activity level (PAL) on changes in energy expenditure (EE), heart rate, and substrate oxidation from sit-to-stand and sit-to-light cycling.
Methods: Fifty healthy young males and females (age: 23.
Evaluation of using grip strength and hand muscle cross-sectional area to predict secondary fractures post distal radius fracture.
Arch Osteoporos
January 2025
Department of Orthopaedics and Traumatology, Queen Mary Hospital The University of Hong Kong, 102 Pok Fu Lam Road, Hong Kong, China.
Unlabelled: Grip strength measurement, as a surrogate of sarcopenia diagnosis, effectively predicts secondary fracture risk in distal radius fracture patients. This simple tool enhances clinical practice by identifying high-risk patients for targeted interventions, potentially preventing or reversing functional decline and recurrent fractures.
Purpose: To evaluate grip strength and hand muscle cross-sectional area as predictors of secondary fracture risk in patients with a history of distal radius fracture (DRF), serving as surrogates of the diagnosis of sarcopenia.
Want 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!