Four modes of heating endotoxin in plasma and two different times of heating endotoxin in pyrogen-free water were compared. There were no significant differences in standard curves after heating endotoxin in plasma at 100 degrees C for 1 and for 10 min. However, the standard curve after heating for 10 min at 75 degrees C had a significantly less steep slope, and after heating for 10 min at 56 degrees C, it was completely flat. Heating of endotoxin in pyrogen-free water for 1 min also resulted in the flattening of the standard curve, which was even more pronounced after 10 min of heating.
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http://dx.doi.org/10.1139/m86-140 | DOI Listing |
Int J Circumpolar Health
December 2025
Department of Chemistry, Carleton University, Ottawa, ON, Canada.
Rates of respiratory tract infections for children living in remote First Nations communities in the Sioux Lookout Zone in Northwestern Ontario are elevated and associated with poor indoor environmental quality including high exposures to endotoxin and serious dampness and mould damage. The studies also revealed a high prevalence of cigarette smoking and most houses have wood stoves, of variable quality. Depending on structure, polycyclic aromatic hydrocarbons (PAH) are carcinogens, immunotoxins and/or inflammatory mediators that are byproducts of the incomplete combustion of organic materials.
View Article and Find Full Text PDFBioorg Med Chem Lett
March 2025
Institute of Bioorganic Chemistry of National Academy of Sciences of Belarus, 5/2 Kuprevič St., Minsk 220084, the Republic of Belarus.
Paracetamol has antipyretic and analgesic properties and it is widely used for fever and pain. However, paracetamol is partially metabolized to N-acetyl-p-benzoquinoneimine, which in overdose leads to liver necrosis, urging for safer paracetamol analogues. As the latter, new para-aminophenol derivatives containing fragments of acetic acid, saturated fatty acids and monoethanolamine were synthesized.
View Article and Find Full Text PDFJ Dairy Sci
February 2025
Department of Animal and Dairy Science, University of Georgia, Athens, GA 30602. Electronic address:
The assessment of animal behavior serves as a valuable approach to identify illness and animal responses to environmental stimuli. Both heat stress and mastitis are reported to affect the behavioral responses of dairy cattle. However, little is known about the effects of heat stress on the lactating cow's behavioral responses to mastitis.
View Article and Find Full Text PDFMed Sci Sports Exerc
February 2025
National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UNITED KINGDOM.
Purpose: Exertional heat stress can induce systemic endotoxin exposure and a proinflammatory cascade, likely impairing thermoregulation. Cannabidiol (CBD) is protective in preclinical models of tissue ischemia and inflammation. Therefore, this study examined the effects of CBD ingestion on exercise-induced thermoregulatory and inflammatory responses.
View Article and Find Full Text PDFNutrients
August 2024
Neurobiota Research Center, Department of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea.
Soybean alleviates cognitive impairment. In our preparatory experiment, we found that dry-heat (90 °C for 30 min)-processed soybean embryo ethanol extract (hSE) most potently suppressed lipopolysaccharide (LPS)-induced tumor necrosis factor (TNF)-α expression in BV2 cells among dry-heat-, steaming-, and oil exclusion-processed soybean embryo ethanol extracts (SEs). Heat processing increased the absorbable soyasaponin Bb content of SE.
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