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Molecular Aspects of Medicine

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https://www.readbyqxmd.com/read/28400119/bile-acids-and-colon-cancer-is-fxr-the-solution-of-the-conundrum
#1
REVIEW
Raffaella Maria Gadaleta, Oihane Garcia-Irigoyen, Antonio Moschetta
Diet and lifestyle habits have a profound impact on the pathophysiology of many diseases. Colorectal cancer (CRC) is the third most common cancer worldwide and its etiology is strongly influenced by nutrition and high fat/high carbohydrate Western-style diet. Human epidemiological and animal studies have shown that colonic cancer risk is also related to faecal bile acid concentration. Abnormally high levels of bile acids (BA) trigger the colonic mucosa with a plethora of detrimental effects such as DNA oxidative damage, inflammation and hyperproliferation that highly promote CRC progression in post-initiation phase...
April 8, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28366638/the-role-of-pro-resolving-lipid-mediators-in-ocular-diseases
#2
REVIEW
Jessica Wei, Karsten Gronert
No abstract text is available yet for this article.
April 6, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28390813/bile-acids-and-bariatric-surgery
#3
REVIEW
Vance L Albaugh, Babak Banan, Hana Ajouz, Naji N Abumrad, Charles R Flynn
Bariatric surgery, specifically Roux-en-Y gastric bypass (RYGB) and vertical sleeve gastrectomy (VSG), are the most effective and durable treatments for morbid obesity and potentially a viable treatment for type 2 diabetes (T2D). The resolution rate of T2D following these procedures is between 40 and 80% and far surpasses that achieved by medical management alone. The molecular basis for this improvement is not entirely understood, but has been attributed in part to the altered enterohepatic circulation of bile acids...
April 5, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28365269/does-promoting-resolution-instead-of-inhibiting-inflammation-represent-the-new-paradigm-in-treating-infections
#4
REVIEW
Jesmond Dalli
Infections arise when the host response is overwhelmed by pathogens leading to organ dysfunction. In some instances patients progress to more severe conditions, including septic shock, that are associated with increased mortality. Current strategies in treating infections aim at either blocking inflammation using inhibitors to pro-inflammatory molecules and/or inhibiting bacterial growth using antibiotics. These approaches find their origins in studies conducted by Joseph Lister who demonstrated that applying carbolic acid to wounds promoted wound healing without suppuration, reducing both the necessity of amputation and mortality...
April 5, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28336292/structural-elucidation-and-physiologic-functions-of-specialized-pro-resolving-mediators-and-their-receptors
#5
REVIEW
Nan Chiang, Charles N Serhan
The acute inflammatory response is host-protective to contain foreign invaders. Many of today's pharmacopeia that block pro-inflammatory chemical mediators can cause serious unwanted side effects such as immune suppression. Uncontrolled inflammation is now considered a pathophysiologic basis associated with many widely occurring diseases such as cardiovascular disease, neurodegenerative diseases, diabetes, obesity and asthma, as well as the classic inflammatory diseases, e.g. arthritis, periodontal diseases...
March 31, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28341541/pro-resolving-actions-of-spm-in-adipose-tissue-biology
#6
REVIEW
Joan Clària, Cristina López-Vicario, Bibiana Rius, Esther Titos
White adipose tissue plays an important endocrine role in balancing metabolic homeostasis. During conditions of nutrient excess, as occurs in obesity, there is an expansion of adipose tissue mass associated with a state of "low-grade" inflammation in this tissue. This chronic, unresolved inflammation of adipose tissue is deleterious and leads to many pathological sequelae associated with obesity including insulin resistance, type 2 diabetes and non-alcoholic fatty liver disease. Recently, a novel genus of anti-inflammatory and pro-resolving lipid mediators endogenously generated from membrane phospholipid-derived polyunsaturated fatty acids has been identified during the resolution phase of acute inflammation...
March 24, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28302491/bile-acids-and-their-receptors-during-liver-regeneration-dangerous-protectors
#7
REVIEW
Grégory Merlen, José Ursic-Bedoya, Valeska Jourdainne, Nicolas Kahale, Mathilde Glenisson, Isabelle Doignon, Dominique Rainteau, Thierry Tordjmann
Tissue repair is orchestrated by a finely tuned interplay between processes of regeneration, inflammation and cell protection, allowing organisms to restore their integrity after partial loss of cells or organs. An important, although largely unexplored feature is that after injury and during liver repair, liver functions have to be maintained to fulfill the peripheral demand. This is particularly critical for bile secretion, which has to be finely modulated in order to preserve liver parenchyma from bile-induced injury...
March 23, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28322867/bile-acid-analysis-in-human-disorders-of-bile-acid-biosynthesis
#8
REVIEW
Frédéric M Vaz, Sacha Ferdinandusse
Bile acids facilitate the absorption of lipids in the gut, but are also needed to maintain cholesterol homeostasis, induce bile flow, excrete toxic substances and regulate energy metabolism by acting as signaling molecules. Bile acid biosynthesis is a complex process distributed across many cellular organelles and requires at least 17 enzymes in addition to different metabolite transport proteins to synthesize the two primary bile acids, cholic acid and chenodeoxycholic acid. Disorders of bile acid synthesis can present from the neonatal period to adulthood and have very diverse clinical symptoms ranging from cholestatic liver disease to neuropsychiatric symptoms and spastic paraplegias...
March 22, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28263773/discovery-of-specialized-pro-resolving-mediators-marks-the-dawn-of-resolution-physiology-and-pharmacology
#9
REVIEW
Charles N Serhan
It is with great pleasure that I write this foreword and introduction to this Special Issue dedicated to the protective actions of the pro-resolving mediators and edited by my colleague Dr. Jesmond Dalli. Many of my collaborators and colleagues that helped to uncover the actions and clinical potential of the resolvins and other specialized proresolving mediators (SPM), namely, the superfamily of pro-resolving mediators that includes the resolvin (E-series, D-series and DPA-derived), protectin and maresin families, as well as the arachidonic acid-derived lipoxins, join me in this special issue...
March 3, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28257820/specialized-pro-resolving-mediators-in-cardiovascular-diseases
#10
REVIEW
Gabrielle Fredman, Matthew Spite
The resolution of inflammation is a highly regulated process enacted by endogenous mediators including specialized pro-resolving lipid mediators (SPMs): the lipoxins, resolvins, protectins and maresins. SPMs activate specific cellular receptors to temper the production of pro-inflammatory mediators, diminish the recruitment of neutrophils, and promote the clearance of dead cells by macrophages. These mediators also enhance host-defense and couple resolution of inflammation to subsequent phases of tissue repair...
February 28, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28232096/special-pro-resolving-mediator-spm-actions-in-regulating-gastro-intestinal-inflammation-and-gut-mucosal-immune-responses
#11
REVIEW
Ruth X Wang, Sean P Colgan
Surfaces covered by epithelial cells, termed mucosal surfaces, serve special functions as selectively permeable barriers that partition the host and the outside world. Given its close association to microbial antigens, the intestinal mucosa has evolved creative mechanisms to maintain homeostasis, to prevent excessive inflammatory responses, and to promote rapid and full inflammatory resolution. In recent years, an active role for the epithelium has been attributed to the local generation of specialized pro-resolving mediators (SPMs) in the maintenance of immunological homeostasis...
February 21, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28223127/multidrug-resistance-in-glioblastoma-stem-like-cells-role-of-the-hypoxic-microenvironment-and-adenosine-signaling
#12
REVIEW
Daniel Uribe, Ángelo Torres, José Dellis Rocha, Ignacio Niechi, Carlos Oyarzún, Luis Sobrevia, Rody San Martín, Claudia Quezada
Glioblastoma multiforme (GBM) is considered the most common and aggressive tumour of the central nervous system and is characterized for being highly chemoresistant. This property is mainly due to the activation of Multiple Drug Resistance (MDR) mechanisms that protect cancer cells from structurally and morphologically different drugs. Overexpression and increased ABC transporters activity is one of the most important MDR mechanisms at the clinical level, and both its expression and activity are elevated in GBM cells...
February 20, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28202385/long-term-consequences-of-disrupting-adenosine-signaling-during-embryonic-development
#13
REVIEW
Scott A Rivkees, Christopher C Wendler
There is growing evidence that disruption in the prenatal environment can have long-lasting effects on an individual's health in adulthood. Research on the fetal programming of adult diseases, including cardiovascular disease, focuses on epi-mutations, which alter the normal pattern of epigenetic factors such as DNA methylation, miRNA expression, or chromatin modification, rather than traditional genetic alteration. Thus, understanding how in utero chemical exposures alter epigenetics and lead to adult disease is of considerable public health concern...
February 13, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28159546/leishmania-infections-molecular-targets-and-diagnosis
#14
REVIEW
Mohammad Akhoundi, Tim Downing, Jan Votýpka, Katrin Kuhls, Julius Lukeš, Arnaud Cannet, Christophe Ravel, Pierre Marty, Pascal Delaunay, Mohamed Kasbari, Bruno Granouillac, Luigi Gradoni, Denis Sereno
Progress in the diagnosis of leishmaniases depends on the development of effective methods and the discovery of suitable biomarkers. We propose firstly an update classification of Leishmania species and their synonymies. We demonstrate a global map highlighting the geography of known endemic Leishmania species pathogenic to humans. We summarize a complete list of techniques currently in use and discuss their advantages and limitations. The available data highlights the benefits of molecular markers in terms of their sensitivity and specificity to quantify variation from the subgeneric level to species complexes, (sub) species within complexes, and individual populations and infection foci...
January 31, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28153453/bile-acids-and-their-receptors
#15
REVIEW
Emmanuelle Martinot, Lauriane Sèdes, Marine Baptissart, Jean-Marc Lobaccaro, Françoise Caira, Claude Beaudoin, David H Volle
Primary bile acids are synthetized from cholesterol within the liver and then transformed by the bacteria in the intestine to secondary bile acids. In addition to their involvement in digestion and fat solubilization, bile acids also act as signaling molecules. Several receptors are sensors of bile acids. Among these receptors, this review focuses on the nuclear receptor FXRα and the G-protein-coupled receptor TGR5. This review briefly presents the potential links between bile acids and cancers that are discussed in more details in the other articles of this special issue of Molecular Aspects of Medicine focused on "Bile acids, roles in integrative physiology and physiopathology"...
January 30, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28153452/adenosine-receptors-modulators-of-lipid-availability-that-are-controlled-by-lipid-levels
#16
REVIEW
Andrea Leiva, Enrique Guzmán-Gutiérrez, Susana Contreras-Duarte, Bárbara Fuenzalida, Claudette Cantin, Lorena Carvajal, Rocío Salsoso, Jaime Gutiérrez, Fabián Pardo, Luis Sobrevia
Adenosine as well as agonists and antagonists for the four adenosine receptor subtypes (A1R, A2AR, A2BR and A3R) play a role in several key physiological and pathophysiological processes, including the regulation of vascular tone, thrombosis, immune response, inflammation, and angiogenesis. This review focuses on the adenosine-mediated regulation of lipid availability in the cell and in the systemic circulation as well in humans and animal models. Therefore, adenosine, mainly by acting on A1R, inhibits lipolysis activity, leading to reduction of the circulating fatty acid levels...
January 30, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28216432/epigenetic-modification-by-dietary-factors-implications-in-metabolic-syndrome
#17
REVIEW
Jae-Ho Park, Soon-Hee Kim, Myeong Soo Lee, Myung-Sunny Kim
Dietary factors play a role in normal biological processes and are involved in the regulation of pathological progression over a lifetime. Evidence has emerged indicating that dietary factor-dependent epigenetic modifications can significantly affect genome stability and the expression of mRNA and proteins, which are involved in metabolic dysfunction. Since metabolic syndrome is a progressive phenotype characterized by insulin resistance, obesity, hypertension, dyslipidemia, or type 2 diabetes, gene-diet interactions are important processes involved in the initiation of particular symptoms of metabolic syndrome and their progression...
April 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/27889327/epigenetics-in-non-alcoholic-fatty-liver-disease
#18
REVIEW
Jooho Lee, Yuri Kim, Simonetta Friso, Sang-Woon Choi
Non-alcoholic fatty liver disease (NAFLD), a common hepatic disorder ranging from simple steatosis through steatohepatitis to fibrosis and cirrhosis, is an emerging health concern. NAFLD is a pathologic condition characterized by the buildup of extra fat in liver cells that is not caused by alcohol consumption. Excess hepatic fat accumulation results from increased delivery of triglycerides (TG) to the liver or conversion of surplus carbohydrates to TG. Importantly, a subgroup of NAFLD results in hepatocellular injury and inflammation, which is referred to as non-alcoholic steatohepatitis (NASH), and may progress to irreversible cirrhosis and hepatocellular carcinoma (HCC)...
April 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/27825817/influence-of-maternal-obesity-diet-and-exercise-on-epigenetic-regulation-of-adipocytes
#19
REVIEW
Archana Dhasarathy, James N Roemmich, Kate J Claycombe
No abstract text is available yet for this article.
April 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/27670623/the-microbial-epigenome-in-metabolic-syndrome
#20
REVIEW
Marlene Remely, Alexander G Haslberger
Dietary habits, lifestyle, medication, and food additives affect the composition and functions of the GI microbiota. Metabolic syndrome is already known to be associated with an aberrant gut microbiota affecting systemic low-grade inflammation, which is also outlined by differing epigenetic patterns. Thus, structural changes and compositional evaluation of gut microbial differences affecting epigenetic patterns in metabolic syndrome are of research interest. In the present review we focus on the disparities in the gut microbiota composition of metabolic syndrome and the resulting aberrant profile of bioactive microbial metabolites known to affect epigenetic modifications such as G-protein coupled receptors and inflammatory pathways...
April 2017: Molecular Aspects of Medicine
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