The addition of purified canine or bovine fibrinogen to suspensions of canine erythocytes in Ringer solution caused an increase in viscosity and the formation of aggregates of erythocytes. Both of these effects became increasingly pronounced as the fibrinogen concentration was raised, and they approached plateaus with 1 gram of fibrinogen per 100 milliliters. An increase in shear rate (or shear stress) reduced both the effect on viscosity and the aggregate size. The data suggest that fibrinogen causes an increase in blood viscosity and a departure from Newtonian behavior by interacting with erythrocytes to form cell aggregates which can be dispersed by shear stress.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1126/science.157.3790.829 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Hemorrhagic Stroke in a 24-Year-Old Male With Polycythemia Vera: A Case Report and Literature Review.
Cureus
December 2024
Neurology, St. Luke's Medical Center, Quezon City, PHL.
Stroke is the second leading cause of death worldwide, according to the latest report by the World Health Organization (WHO). Intracerebral hemorrhage comprises 20-25% of the stroke in the young, with incidence rates of three to six in 100,000 people per year. One of the most common and important causes of hemorrhagic stroke in the general population is hypertension.
View Article and Find Full Text PDFEffects of Three Different Distance/Elevation-Gain Ultra-Trail Races on Red Blood Cell Oxidative Stress and Senescence, and Blood Rheology.
Med Sci Sports Exerc
January 2025
University of La Réunion, INSERM, U1188 Diabetes Atherothrombosis Therapies Indian Ocean (DéTROI), Saint Pierre de La Réunion, FRANCE.
Purpose: Red blood cells (RBCs) senescence and blood rheology during ultra-endurance running events appear to be impacted differently depending on the race distance. The physiological mechanisms underlying these differences are poorly understood.
Methods: We investigated the effects of three different ultra-trail running races performed in La Reunion Island (Mascareignes, "the 70 km", 70 km/4,000 m D+; Trail Du Bourbon, "the 100 km", 100 km/6,090 m D+; Diagonale des Fous, "the 170 km", 170 km/10,500 m D+) on RBC oxidative stress, RBC senescence and blood rheology in 66 finishers (18 "70 km", 24 "100 km", 24 "170 km").
Impact of Food Physical Properties on Oral Drug Absorption: A Comprehensive Review.
Drug Des Devel Ther
January 2025
Clinical Pharmacology Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China.
Food-Drug Interaction (FDI) refers to the phenomenon where food affects the pharmacokinetic or pharmacodynamic characteristics of a drug, significantly altering the drug's absorption rate or absorption extent. These Interactions are considered as a primary determinant in influencing the bioavailability of orally administered drugs within the gastrointestinal tract. The impact of food on drug absorption is complex and multifaceted, potentially involving alterations in gastrointestinal physiology, increases in splanchnic blood flow rates, and shifts in the gut microbiota's composition.
View Article and Find Full Text PDFWater triggered injectable polylactic acid hydrogel based on zwitterionic sulfobetaine modification for incompressible bleeding and tissue anti-adhesion.
Mater Today Bio
February 2025
Institution of Disaster and Emergency Medicine, Tianjin University, Tianjin, 300072, China.
Massive blood loss is the main cause of prehospital trauma-related death, the development of rapid and effective hemostatic materials is imminent. Injectable hydrogels have the advantages of covering irregular bleeding sites and quickly closing the wound. However, its inherent viscosity can easily precipitate tissue adhesion and other complications.
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!