Amphiphiles induce hemolysis at a given concentration and that would be dependent on their structure. To know this, we have synthesized anionic surfactants derived from lysine and differing in their chain length and we have studied their hemolytic action. The chain length of the surfactants affects their hemolytic behaviour. Surfactants with two chains of 7 or 9 carbons presented biphasic behaviour at a concentration below or above 50 mg/100 ml. However, only the surfactant with two chains of 7 carbons has a protective effect against hypotonic hemolysis. The maximum protection was exerted when the surfactant was added to a 150 mOsmol/L solution. The surfactant is assumed to intercalate into the membrane in an orientated fashion and prevent the hypotonic hemolysis. For this hemolytic behaviour the presence of two chains of 7 carbons seems to be necessary.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0742-8413(97)00033-9 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Constructing an Organic-Inorganic Hybrid Solid-Electrolyte Interface In Situ via an Organo-Polysulfide Electrolyte Additive for Lithium-Sulfur Batteries.
ACS Appl Mater Interfaces
January 2025
School of Material Science and Engineering, Jiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, Changzhou University, Changzhou 213164, China.
Lithium (Li) metal's extremely high specific energy and low potential make it critical for high-performance batteries. However, uncontrolled dendrite growth and an unstable solid-electrolyte interphase (SEI) during repeated cycling still seriously hinder its practical application in Li metal batteries. Herein, we demonstrate a facile and effective approach to fabricate a flexible and robust hybrid SEI layer using two kinds of organo-polysulfides with different sulfur chain lengths [bis(3-(triethoxysilyl)propyl)disulfide (Si-O-2S) and bis(3-(triethoxysilyl)propyl)tetrasulfide (Si-O-4S)] as the additives in the electrolyte.
View Article and Find Full Text PDFThe diffusible signaling factor family in microbial signaling: a current perspective.
Crit Rev Microbiol
January 2025
Oral Microbiology, Bristol Dental School, University of Bristol, United Kingdom.
This review discusses the chemical properties, synthesis and detection, and biological functions of a molecular group of cis-2-unsaturated fatty acids, containing fatty acid carbon chains of various lengths and cis double-bond configurations, known as the diffusible signaling factor family (DSFF). Early postulation of the conserved nature of the DSFF among Gram-negative bacteria have now been challenged by the latest evidences that unraveled their presence in a various other distinct microorganisms. Over the last decade, a significant depth and breadth of understanding has been made on the multifaceted functions of DSFFs among bacteria, and their interactions with evolutionarily divergent fungi, plants insects and small animals.
View Article and Find Full Text PDFImpact of Glaciers on Trophic Dynamics and Polyunsaturated Fat Accumulation in Southern Greenland Fjord Ecosystems.
Glob Chang Biol
January 2025
Department of Surface Waters-Research and Management, EAWAG, Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum, Switzerland.
The primary production of fjords across the Arctic and Subarctic is undergoing significant transformations due to the climatically driven retreat of glaciers and ice sheets. However, the implications of these changes for upper trophic levels remain largely unknown. In this study, we employ both bulk and compound-specific stable isotope analyses to investigate how shifts at the base of fjord food webs impact the carbon and energy sources of consumers.
View Article and Find Full Text PDFUnderstanding the electron pathway fluidity of Synechocystis in biophotovoltaics.
Plant J
January 2025
Systems Biotechnology Group, Department Microbial Biotechnology, Helmholtz Centre for Environmental Research - UFZ, Leipzig, 04318, Germany.
Biophotovoltaics offers a promising low-carbon footprint approach to utilize solar energy. It aims to couple natural oxygenic photosynthetic electrons to an external electron sink. This lays the foundation for a potentially high light-to-energy efficiency of the Biophotovoltaic process.
View Article and Find Full Text PDFAn integrated strategy for sequential nitrite removal and methane recovery: Sludge fermentation driven by nitrite reduction.
Water Res X
May 2025
National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
Although the treatment of sludge with free nitrous acid can effectively recover short chain fatty acids, the feasibility of sequential nitrite reduction and methane recovery without acidic pH adjustment is still scarcely studied. Therefore, this study aimed to provide insights into the effect of nitrite at different levels on nitrite reduction and methane production. The results showed that the nitrite concentrations of 100, 200, 400 and 800 mg/L were completely reduced in 1, 2, 2 and 4 days, respectively.
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!