Dopaminergic Pathways in Obesity-Associated Inflammation. 2020

Fernanda Leite, and Laura Ribeiro
Department of Clinical Haematology, Centro Hospitalar Universitário of Porto, Largo Professor Abel Salazar, 4099-001, Porto, Portugal. fernandajtleite@hotmail.com.

The overwhelming prevalence of obesity is a priority for public health compromising human lifespan and representing important economic burden worldwide. Obesity is characterized by a state of chronic low-grade inflammation associated to metabolic dysfunction. Although the efforts for unravelling the complex immunometabolic signaling pathways to explain the association of obesity with type 2 diabetes, cardiovascular diseases, cancer, neurodegenerative diseases and psychiatric disorders, we still do not have all the picture to design effective therapeutic to fight these immunometabolic disease clusters. Dopaminergic pathways apart from having a major role in the regulation of appetite and feeding behaviors are important immunoregulators in inflammation; thus, dopaminergic regulation is suggested to impact obesity- associated inflammation. Dopamine (DA) has been reported to modulate immune function and immune cells themselves produce endogenous DA. DA-induced immunomodulation is currently the focus of intense experimental research and dopaminergic pathways are increasingly considered a target for drug development in immune diseases. While the role of dopaminergic pathways in immune-mediated diseases has been intensively investigated in neurodegenerative diseases, dopaminergic immunomodulation in obesity-associated inflammation is largely unknown. This review will integrate the actual knowledge about dopaminergic pathways involved in obesity-associated inflammation with special focus on immune innate key cell players. We present an explanatory hypothesis with a model that integrate central and peripheral dopaminergic circuits in the relationship between neuroimmune and metabolic systems in obesity-associated inflammation. A perspective on the potential role of dopaminergic drugs in the context of obesity will be given. Graphical Abstract Graphical representation of central and peripheral dopaminergic pathways in obesity-associated inflammation.

UI MeSH Term Description Entries
D007249 Inflammation A pathological process characterized by injury or destruction of tissues caused by a variety of cytologic and chemical reactions. It is usually manifested by typical signs of pain, heat, redness, swelling, and loss of function. Innate Inflammatory Response,Inflammations,Inflammatory Response, Innate,Innate Inflammatory Responses
D009000 Monocytes Large, phagocytic mononuclear leukocytes produced in the vertebrate BONE MARROW and released into the BLOOD; contain a large, oval or somewhat indented nucleus surrounded by voluminous cytoplasm and numerous organelles. Monocyte
D009765 Obesity A status with BODY WEIGHT that is grossly above the recommended standards, usually due to accumulation of excess FATS in the body. The standards may vary with age, sex, genetic or cultural background. In the BODY MASS INDEX, a BMI greater than 30.0 kg/m2 is considered obese, and a BMI greater than 40.0 kg/m2 is considered morbidly obese (MORBID OBESITY).
D011954 Receptors, Dopamine Cell-surface proteins that bind dopamine with high affinity and trigger intracellular changes influencing the behavior of cells. Dopamine Receptors,Dopamine Receptor,Receptor, Dopamine
D001921 Brain The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM. Encephalon
D004298 Dopamine One of the catecholamine NEUROTRANSMITTERS in the brain. It is derived from TYROSINE and is the precursor to NOREPINEPHRINE and EPINEPHRINE. Dopamine is a major transmitter in the extrapyramidal system of the brain, and important in regulating movement. A family of receptors (RECEPTORS, DOPAMINE) mediate its action. Hydroxytyramine,3,4-Dihydroxyphenethylamine,4-(2-Aminoethyl)-1,2-benzenediol,Dopamine Hydrochloride,Intropin,3,4 Dihydroxyphenethylamine,Hydrochloride, Dopamine
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000069196 Gastrointestinal Microbiome All of the microbial organisms that naturally exist within the GASTROINTESTINAL TRACT. Enteric Bacteria,Gastric Microbiome,Gastrointestinal Flora,Gastrointestinal Microbial Community,Gastrointestinal Microbiota,Gastrointestinal Microflora,Gut Flora,Gut Microbiome,Gut Microbiota,Gut Microflora,Intestinal Flora,Intestinal Microbiome,Intestinal Microbiota,Intestinal Microflora,Bacteria, Enteric,Flora, Gastrointestinal,Flora, Gut,Flora, Intestinal,Gastric Microbiomes,Gastrointestinal Microbial Communities,Gastrointestinal Microbiomes,Gastrointestinal Microbiotas,Gut Microbiomes,Gut Microbiotas,Intestinal Microbiomes,Intestinal Microbiotas,Microbial Community, Gastrointestinal,Microbiome, Gastric,Microbiome, Gastrointestinal,Microbiome, Gut,Microbiome, Intestinal,Microbiota, Gastrointestinal,Microbiota, Gut,Microbiota, Intestinal,Microflora, Gastrointestinal,Microflora, Gut,Microflora, Intestinal
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D015259 Dopamine Agents Any drugs that are used for their effects on dopamine receptors, on the life cycle of dopamine, or on the survival of dopaminergic neurons. Dopamine Drugs,Dopamine Effect,Dopamine Effects,Dopaminergic Agents,Dopaminergic Drugs,Dopaminergic Effect,Dopaminergic Effects,Agents, Dopamine,Agents, Dopaminergic,Drugs, Dopamine,Drugs, Dopaminergic,Effect, Dopamine,Effect, Dopaminergic,Effects, Dopamine,Effects, Dopaminergic

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