Lipid rafts can form in the inner and outer membranes of Borrelia burgdorferi and have different properties and associated proteins

This article is protected by copyright. All rights reserved. The presence of cholesterol glycolipids in the membranes of Borrelia burgdorferi was detected and characterized by biophysical and biochemical approaches.  Cholesterol glycolipids are present in both the outer and inner membranes, but are different in composition and their ability to form lipid rafts and in their associated proteins.
Source: Molecular Microbiology - Category: Microbiology Authors: Tags: Research Article Source Type: research

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Authors: Figoni J, Chirouze C, Hansmann Y, Lemogne C, Hentgen V, Saunier A, Bouiller K, Gehanno JF, Rabaud C, Perrot S, Caumes E, Eldin C, de Broucker T, Jaulhac B, Roblot F, Toubiana J, Sellal F, Vuillemet F, Sordet C, Fantin B, Lina G, Gocko X, Dieudonné M, Bodaghi B, Gangneux JP, Degeilh B, Partouche H, Lenormand C, Sotto A, Raffetin A, Monsuez JJ, Michel C, Boulanger N, Cathebras P, Tattevin P, endorsed by scientific societies Abstract Lyme borreliosis is transmitted en France by the tick Ixodes ricinus, endemic in metropolitan France. In the absence of vaccine licensed for use in humans, primary prevent...
Source: Medecine et Maladies Infectieuses - Category: Infectious Diseases Tags: Med Mal Infect Source Type: research
This study concludes that prior treatment of succinylated starch by ultra-sonication is an efficient way to improve the resistant starch content and principally in vitro cholesterol and bile acid/salts binding ability.
Source: Food Chemistry - Category: Food Science Source Type: research
Publication date: Available online 16 April 2019Source: Ticks and Tick-borne DiseasesAuthor(s): Karla Dayane Gruhn, Maria Ogrzewalska, Tatiana Rozental, Itacir Olivio Farikoski, Carolina Blanco, Lucas de Souza Freitas, Elba Regina Sampaio de Lemos, Vânia Maria França RibeiroAbstractCapybaras (Hydrochoerus hydrochaeris Linnaeus, 1766) (Rodentia: Caviidae) are important hosts of Amblyomma ticks (Acari: Ixodidae), which in turn can transmit rickettsiae to humans and animals. However, there is a scarcity of studies about the tick fauna and rickettsial infection in the Amazon region. The present study evaluated ric...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
In this study, we characterized proteome profiles in HDL subclasses and established their functional connection. Mouse plasma was fractionized by fast protein liquid chromatography, examined for protein, cholesterial, phospholipid and trigliceride content. Small, medium and large (S/M/L)-HDL subclasseses were collected for proteomic analysis by mass spectrometry. Fifty-one HDL proteins (39 in S-HDL, 27 in M-HDL and 29 in L-HDL) were identified and grouped into 4 functional categories (lipid metabolism, immune response, coagulation, and others). Eleven HDL common proteins were identified in all HDL subclasses. Sixteen, 3 an...
Source: Redox Biology - Category: Biology Source Type: research
Horm Metab Res 2019; 51: 326-329 DOI: 10.1055/a-0885-7169Dyslipidemia and dyslipoproteinemia are common causes of metabolic and cardiovascular diseases. On the other hand, intracellular bacteria, such as Borrelia burgdorferi, utilize host lipids to survive and disseminate within the host. Recent data suggest that elevated lipids are a contributing factor to the maintenance and severity of Lyme disease and its complications. Here we review and discuss the role of lipids in Borreliosis and report on a pilot trial to examine the potential roles of circulating lipids and lipoproteins in patients with Borrelia infection. In thi...
Source: Hormone and Metabolic Research - Category: Endocrinology Authors: Tags: Endocrine Care Source Type: research
Abstract Co-existing disordered and ordered (raft) membrane domains exist in Borrelia burgdorferi, the causative agent of Lyme disease. However, although B. burgdorferi contains cholesterol lipids, it lacks sphingolipids-a crucial component of rafts in eukaryotes. To define the principles of ordered lipid domain formation in Borrelia, the domain forming properties of vesicles composed of its three major lipids, acylated cholesteryl galactoside (ACGal), monogalactosyl diacyglycerol (MGalD), and phosphatidylcholine (PC) and/or their mixtures were studied. Anisotropy and fluorescence resonance energy transfer me...
Source: Biophysical Journal - Category: Physics Authors: Tags: Biophys J Source Type: research
Hey, Sugar, pay no attention to the man behind the curtain. Today, the Journal of the American Medical Association dropped an alleged bombshell when it disclosed that the sugar industry lobby influenced research on coronary heart disease by effectively bribing Harvard researchers to promote the theory that dietary fat, and not sugar, causes heart disease. The story is trending on Facebook at this very moment, and the JAMA Facebook post states that "Policymaking committees should consider giving less weight to food industry-funded studies, and include mechanistic and animal studies as well as studies appraising the ...
Source: Healthy Living - The Huffington Post - Category: Consumer Health News Source Type: news
Publication date: Available online 16 March 2016 Source:Microbes and Infection Author(s): Tricia A. Van Laar, Camaron Hole, S.L. Rajasekhar Karna, Christine L. Miller, Robert Reddick, Floyd L. Wormley, J. Seshu Lyme disease (LD) is a systemic disorder caused by Borrelia burgdorferi. Lyme spirochetes encode for a functional 3-hydroxy-3-methyl-glutaryl-coenzyme A reductase (HMGR EC 1.1.1.88) serving as a rate limiting enzyme of the mevalonate pathway that contribute to components critical for cell wall biogenesis. Statins have been shown to inhibit B. burgdorferi in vitro. Using a mouse model of Lyme disease, we fou...
Source: Microbes and Infection - Category: Infectious Diseases Source Type: research
In this study, the bacterial CAP domain structure was analyzed and compared with the previously solved crystal structures of representative CAPs, and the function of BB0689 was examined. To determine the potential function of BB0689 and ascertain whether the functions that have been attributed to the CAP domain proteins are conserved, the binding of previously reported CAP domain interaction partners was analyzed, and the results suggested that BB0689 has a unique function that is yet to be discovered.
Source: Journal of Structural Biology - Category: Biology Source Type: research
This study provides the first analysis of a prokaryotic lipid raft and has relevance for the biology of Borrelia, other pathogenic bacteria, as well as for the evolution of these structures. This article is protected by copyright. All rights reserved
Source: Proteomics - Category: Biochemistry Authors: Tags: Research Article Source Type: research
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