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Aggregatibacter actinomycetemcomitans is a well-studied Gram-negative bacterium that can often be found in the oral cavity of young individuals. It has several virulence factors and a large genetic diversity, which results in both harmless and highly virulent genotypes. To determine the virulence potential of the isolated bacteria, genetic profiling is recommended. Advanced knowledge of the virulence mechanisms induced by this bacterium is important for the development of future personalized preventive and treatment strategies. The fifteen papers in this book provide a strong and relevant background that can contribute to the improvement of future diagnosis and research strategies.

Research & information: general --- Biology, life sciences --- Aggregatibacter actinomycetemcomitans --- cagE --- virB1 --- virB4 --- genotype --- virulence --- mRNA assay --- quantitative ELISA --- cell lysis assay --- leukotoxin --- JP2 genotype --- cytolethal distending toxin --- lipopolysaccharides --- cytokine binding factors --- horizontal gene transfer --- outer membrane vesicles --- biofilm --- proteomic --- adherence --- endocarditis --- fimbriae --- JP2 --- periodontitis --- taxonomy --- core and accessory genes --- average nucleotide identity --- principal component analysis --- keratins --- organotypic gingival mucosa --- A. actinomycetemcomitans --- RNA-Seq --- genomic islands --- core genes --- accessory genes --- stress --- nutrient limitation --- differentially expressed genes. --- lymphocytes --- apoptosis --- RTX toxin --- localized aggressive periodontitis --- LFA-1 --- leukotoxin (LtxA) --- endocytosis --- n/a --- JP2 clone of Aggregatibacter actinomycetemcomitans --- JP2 in Caucasian --- microbiological diagnosis --- adjunctive antibiotics --- localized aggressive periodontitis: animal studies: human studies --- landscape ecology --- damage/response framework --- bacteremia --- horseshoe crab --- Origanum vulgare --- essential oil --- antimicrobial activity --- minimum inhibitory concentration --- minimal bactericidal concentration --- cytotoxicity --- leukotoxin neutralization --- inflammasome --- immune response --- periodontal disease --- proteomics

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This reprint combines recent original manuscripts and reviews covering the multiple functions of peroxisome proliferator-activated receptors in physiology and pathophysiology. Potential applications and limitations of PPAR agonists and antagonists are discussed. All original contributions were published in Cells.

peroxisome-proliferator activated receptors --- tumor angiogenesis --- tumor progression --- metastasis formation --- endothelial cells --- RNA sequencing --- PPARs --- toxicology --- pharmacology --- ligand --- vascular --- coronary artery --- lipidomics --- eicosanoids --- inflammation --- CYP450 --- peroxisome proliferator-activated receptor --- angiogenesis --- proliferation --- metastasis --- immortality --- resistance to cell death --- growth suppressors --- immune system --- cellular metabolism --- PPAR --- nuclear receptors --- addiction --- alcohol --- nicotine --- opioids --- psychostimulants --- animal models --- human studies --- Alzheimer’s --- risk factors --- PPARα --- lipids --- fatty acids --- modulators --- cognition --- sex --- therapy --- hypertrophic adipocytes --- PPARG isoforms --- PPARG splicing --- dominant-negative isoform --- in vitro adipocytes --- adipogenesis --- hypertrophic obesity --- insulin-resistance --- peroxisome proliferator-activated receptors (PPARs) --- synthetic agonists --- non-alcoholic fatty liver disease (NAFLD) --- non-alcoholic steatohepatitis (NASH) --- fibrosis --- Sirtuin1 --- peroxisome proliferator-activated receptor-γ coactivator-1α --- peroxisome proliferator activated receptors --- obesity --- metabolic syndrome --- vitamin B12 --- folate --- fetal programming --- inherited metabolic disorders --- PGC-1α, disease --- kidney --- cancer --- AKI --- CKD --- nephron --- PKD --- cilia --- cystogenesis --- ligands --- Alzheimer’s disease (AD)

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Aggregatibacter actinomycetemcomitans is a well-studied Gram-negative bacterium that can often be found in the oral cavity of young individuals. It has several virulence factors and a large genetic diversity, which results in both harmless and highly virulent genotypes. To determine the virulence potential of the isolated bacteria, genetic profiling is recommended. Advanced knowledge of the virulence mechanisms induced by this bacterium is important for the development of future personalized preventive and treatment strategies. The fifteen papers in this book provide a strong and relevant background that can contribute to the improvement of future diagnosis and research strategies.

Research & information: general --- Biology, life sciences --- Aggregatibacter actinomycetemcomitans --- cagE --- virB1 --- virB4 --- genotype --- virulence --- mRNA assay --- quantitative ELISA --- cell lysis assay --- leukotoxin --- JP2 genotype --- cytolethal distending toxin --- lipopolysaccharides --- cytokine binding factors --- horizontal gene transfer --- outer membrane vesicles --- biofilm --- proteomic --- adherence --- endocarditis --- fimbriae --- JP2 --- periodontitis --- taxonomy --- core and accessory genes --- average nucleotide identity --- principal component analysis --- keratins --- organotypic gingival mucosa --- A. actinomycetemcomitans --- RNA-Seq --- genomic islands --- core genes --- accessory genes --- stress --- nutrient limitation --- differentially expressed genes. --- lymphocytes --- apoptosis --- RTX toxin --- localized aggressive periodontitis --- LFA-1 --- leukotoxin (LtxA) --- endocytosis --- JP2 clone of Aggregatibacter actinomycetemcomitans --- JP2 in Caucasian --- microbiological diagnosis --- adjunctive antibiotics --- localized aggressive periodontitis: animal studies: human studies --- landscape ecology --- damage/response framework --- bacteremia --- horseshoe crab --- Origanum vulgare --- essential oil --- antimicrobial activity --- minimum inhibitory concentration --- minimal bactericidal concentration --- cytotoxicity --- leukotoxin neutralization --- inflammasome --- immune response --- periodontal disease --- proteomics --- Aggregatibacter actinomycetemcomitans --- cagE --- virB1 --- virB4 --- genotype --- virulence --- mRNA assay --- quantitative ELISA --- cell lysis assay --- leukotoxin --- JP2 genotype --- cytolethal distending toxin --- lipopolysaccharides --- cytokine binding factors --- horizontal gene transfer --- outer membrane vesicles --- biofilm --- proteomic --- adherence --- endocarditis --- fimbriae --- JP2 --- periodontitis --- taxonomy --- core and accessory genes --- average nucleotide identity --- principal component analysis --- keratins --- organotypic gingival mucosa --- A. actinomycetemcomitans --- RNA-Seq --- genomic islands --- core genes --- accessory genes --- stress --- nutrient limitation --- differentially expressed genes. --- lymphocytes --- apoptosis --- RTX toxin --- localized aggressive periodontitis --- LFA-1 --- leukotoxin (LtxA) --- endocytosis --- JP2 clone of Aggregatibacter actinomycetemcomitans --- JP2 in Caucasian --- microbiological diagnosis --- adjunctive antibiotics --- localized aggressive periodontitis: animal studies: human studies --- landscape ecology --- damage/response framework --- bacteremia --- horseshoe crab --- Origanum vulgare --- essential oil --- antimicrobial activity --- minimum inhibitory concentration --- minimal bactericidal concentration --- cytotoxicity --- leukotoxin neutralization --- inflammasome --- immune response --- periodontal disease --- proteomics

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Neurodegenerative diseases, including Alzheimer’s, Parkinson’s, Huntington’s, and amyotrophic lateral sclerosis, are the most common pathologies of the central nervous system currently without a cure. They share common molecular and cellular characteristics, including protein misfolding, mitochondrial dysfunction, glutamate toxicity, dysregulation of calcium homeostasis, oxidative stress, inflammation, and ageing, which contribute to neuronal death. Efforts to treat these diseases are often limited by their multifactorial etiology. Natural products, thanks to their multitarget activities, are considered promising alternatives for the treatment of neurodegeneration. This book deals with two different forms of natural products: extracts and isolated compounds. The study of the bioactivity of the extracts is extremely important as many studies have demonstrated the synergistic effect of the combination of different natural products. On the other hand, the investigation of the activity of specifically isolated natural products can be also important to understand their cellular and molecular mechanisms and to define the specific bioactive components in extracts or foods. This book can be considered an important contribution to knowledge of the neuroprotective effect of natural products and presents a great deal of information, related to both the benefits but also the limitations of their use in counteracting neurodegeneration.

Research & information: general --- Biology, life sciences --- Vitamin D --- Multiple Sclerosis --- symptom --- neurodegeneration --- oxidative injury --- Parkinson's disease --- terpenes, rotenone --- thymol --- Alzheimer's disease --- Centella asiatica --- hippocampus --- protein poshophatase 2 --- glycogen synthase kinase 3 --- B-cell lymphoma 2 --- neuroprotection --- nutraceuticals --- bioavailability --- stress response --- neurodegenerative disease --- bioactive compound --- natural extract --- β-amyloid peptide --- tau protein --- clinical trial --- human studies --- animal studies --- in vitro studies --- curcumin --- free radicals --- heme oxygenase --- safety profile --- type 2 diabetes --- inflammation --- vascular damage --- learning --- memory --- natural compound --- oxidative stress --- cognitive dysfunction --- cell death --- synapse loss --- protein aggregation --- neuroinflammation --- algae --- seaweeds --- neurodegenerative diseases --- auraptene --- dopamine neuron --- antioxidant --- mitochondria --- Chionanthus retusus --- flavonoid --- flower --- HO-1 --- NO --- Lippia citriodora --- VEE --- Vs --- relaxation --- depression --- cyclic AMP --- calcium --- blood-brain barrier --- catechin --- cognition --- epigallocatechin gallate --- green tea --- microbiota --- 5-(3,5-dihydroxyphenyl)-γ-valerolactone --- ascaroside pheromone --- C. elegans --- dauer --- neuronal signaling --- sexual behavior --- survival signals --- proteostasis --- chaperones --- autophagy --- ubiquitin-proteasome --- unfolded protein response --- natural compounds --- natural products --- ethics --- patients' autonomy --- beneficence --- nonmaleficence --- medical liability --- Parkinson's disease (PD) --- mitochondrial dysfunction --- dynamics --- hormesis --- ubiquitin‒proteasome system (UPS) --- mitophagy --- Vitamin D --- Multiple Sclerosis --- symptom --- neurodegeneration --- oxidative injury --- Parkinson's disease --- terpenes, rotenone --- thymol --- Alzheimer's disease --- Centella asiatica --- hippocampus --- protein poshophatase 2 --- glycogen synthase kinase 3 --- B-cell lymphoma 2 --- neuroprotection --- nutraceuticals --- bioavailability --- stress response --- neurodegenerative disease --- bioactive compound --- natural extract --- β-amyloid peptide --- tau protein --- clinical trial --- human studies --- animal studies --- in vitro studies --- curcumin --- free radicals --- heme oxygenase --- safety profile --- type 2 diabetes --- inflammation --- vascular damage --- learning --- memory --- natural compound --- oxidative stress --- cognitive dysfunction --- cell death --- synapse loss --- protein aggregation --- neuroinflammation --- algae --- seaweeds --- neurodegenerative diseases --- auraptene --- dopamine neuron --- antioxidant --- mitochondria --- Chionanthus retusus --- flavonoid --- flower --- HO-1 --- NO --- Lippia citriodora --- VEE --- Vs --- relaxation --- depression --- cyclic AMP --- calcium --- blood-brain barrier --- catechin --- cognition --- epigallocatechin gallate --- green tea --- microbiota --- 5-(3,5-dihydroxyphenyl)-γ-valerolactone --- ascaroside pheromone --- C. elegans --- dauer --- neuronal signaling --- sexual behavior --- survival signals --- proteostasis --- chaperones --- autophagy --- ubiquitin-proteasome --- unfolded protein response --- natural compounds --- natural products --- ethics --- patients' autonomy --- beneficence --- nonmaleficence --- medical liability --- Parkinson's disease (PD) --- mitochondrial dysfunction --- dynamics --- hormesis --- ubiquitin‒proteasome system (UPS) --- mitophagy

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The prevalence of obesity and its comorbidities, particularly type 2 diabetes, cardiovascular and hepatic disease and certain cancers, continues to rise worldwide. Paradoxically, despite an increasingly obesogenic environment, particularly in Western societies, undernutrition is also extremely common. The application of novel, sophisticated techniques, particularly related to imaging and molecular biology, has substantially advanced our understanding of the mechanisms controlling appetite and energy intake. This has led to a redefinition of many concepts, including the relative importance of central versus peripheral mechanisms, recognising that the gastrointestinal (GI) tract, particularly gut hormones, plays a critical role. Given the major advance in knowledge in the field, this Special Issue provides a comprehensive overview of the GI mechanisms underlying the regulation of appetite and energy intake, as a series of definitive reviews by international authorities. The reviews address gut-related mechanisms, including nutrient sensing, gut hormones and GI motility, gut-brain communication, including the roles of the vagus and the modulation of reward perception, the roles of diet and the microbiota, as well as the abnormalities associated with eating disorders, specifically obesity and anorexia of ageing, and the beneficial effects of bariatric surgery. The reviews cover both preclinical research and studies in humans, and are complemented by a number of important original papers.

Medicine --- lixisenatide --- intragastric meal retention --- energy intake --- type 2 diabetes --- obesity --- amino acid --- isoleucine --- chronic supplementation --- energy expenditure --- oral glucose tolerance test --- glycaemic control --- gastric emptying breath test --- endocannabinoid --- cannabinoid CB1 receptor --- gut–brain --- intestine --- western diet --- preference --- whey protein --- gastric emptying --- appetite --- lifecourse --- gut hormones --- hunger --- protein --- TAS2R5 --- TAS2R39 --- TAS2R14 --- agonist --- food intake --- GLP1 --- CCK --- PYY --- miniature pig --- pig model --- functional brain imaging --- molecular imaging --- vagal afferents --- single fiber recording --- insulin resistance --- GLP-1r --- gastric barostat --- scintigraphy --- meal ingestion --- postprandial responses --- hedonic sensations --- homeostatic sensations --- abdominal wall activity --- abdominal distension --- taste --- fat --- carbohydrate --- bariatric surgery --- GLP-1 --- ghrelin --- Roux-en-Y gastric bypass --- gastric band --- sleeve gastrectomy --- circadian --- gastrointestinal tract --- enteroendocrine cells --- chemosensory --- GIP --- nutrients --- hormones --- food ingestion --- digestion --- satiety --- digestive well-being --- functional gastrointestinal disorders --- postprandial symptoms --- brainstem --- vagus --- feeding --- gastrointestinal --- cue reactivity --- meal anticipation --- motivation --- nutrient preference --- flavor --- aversion --- bile acids --- TGR-5 --- FXR --- gastrointestinal hormones --- body weight --- gastric accommodation --- satiation --- CB1 receptor --- gut-brain --- reward --- aging --- whey --- anorexia --- supplements --- sarcopenia --- nutrient sensing --- enteroendocrine cells (EECs) --- appetite regulation --- G-protein coupled receptors (GPCRs) --- bitter substances --- gastric motor function --- postprandial blood glucose --- preclinical studies --- human studies --- texture --- oro-sensory exposure --- sensory science --- cephalic responses --- brain areas --- brain stem --- weight management --- intestinal brake --- duodenal jejunal and ileal brake --- tastants --- circadian clock --- gastric bypass surgery --- microbiome --- hypothalamus --- n/a