scholarly journals Does Modern Lifestyle Favor Neuroimmunometabolic Changes? A Path to Obesity

2021 ◽  
Vol 8 ◽  
Author(s):  
Camila Guazzelli Marques ◽  
Marcus V. L. dos Santos Quaresma ◽  
Fernanda Patti Nakamoto ◽  
Ana Carolina Oumatu Magalhães ◽  
Glaice Aparecida Lucin ◽  
...  
Keyword(s):  
Systemic Inflammation ◽  
Energy Homeostasis ◽  
Western Diet ◽  
Positive Energy ◽  
Poor Sleep ◽  
Low Grade ◽  
Metabolic Dysfunction ◽  
Obesity Prevalence ◽  
Hypothalamic Inflammation ◽  
Positive Energy Balance

Factors linked to modern lifestyles, such as physical inactivity, Western diet, and poor sleep quality have been identified as key contributors to the positive energy balance (PEB). PEB rises adipose tissue hypertrophy and dysfunction over the years, affecting cells and tissues that are metabolically critical for energy homeostasis regulation, especially skeletal muscle, hypothalamic-pituitary-adrenal axis, and gut microbiota. It is known that the interaction among lifestyle factors and tissue metabolic dysfunction increases low-grade chronic systemic inflammation, leading to insulin resistance and other adverse metabolic disorders. Although immunometabolic mechanisms are widely discussed in obesity, neuroimmunoendocrine pathways have gained notoriety, as a link to neuroinflammation and central nervous system disorders. Hypothalamic inflammation has been associated with food intake dysregulation, which comprises homeostatic and non-homeostatic mechanisms, promoting eating behavior changes related to the obesity prevalence. The purpose of this review is to provide an updated and integrated perspective on the effects of Western diet, sleep debt, and physical exercise on the regulation of energy homeostasis and low-grade chronic systemic inflammation. Subsequently, we discuss the intersection between systemic inflammation and neuroinflammation and how it can contribute to energy imbalance, favoring obesity. Finally, we propose a model of interactions between systemic inflammation and neuroinflammation, providing new insights into preventive and therapeutic targets for obesity.

scholarly journals Problems of Pathogenesis and Pathogenetic Therapy of COVID-19 from the Perspective of the General Theory of Pathological Systems (General Pathological Processes)

2021 ◽  
Vol 22 (14) ◽  
pp. 7582
Author(s):  
Evgenii Gusev ◽  
Alexey Sarapultsev ◽  
Desheng Hu ◽  
Valeriy Chereshnev
Keyword(s):  
Systemic Inflammation ◽  
Pathological Process ◽  
The State ◽  
The Other ◽  
Low Grade ◽  
Metabolic Dysfunction ◽  
The Metabolic Syndrome ◽  
Other Hand ◽  
Pathogenetic Therapy ◽  
Fundamental Medicine

The COVID-19 pandemic examines not only the state of actual health care but also the state of fundamental medicine in various countries. Pro-inflammatory processes extend far beyond the classical concepts of inflammation. They manifest themselves in a variety of ways, beginning with extreme physiology, then allostasis at low-grade inflammation, and finally the shockogenic phenomenon of “inflammatory systemic microcirculation”. The pathogenetic core of critical situations, including COVID-19, is this phenomenon. Microcirculatory abnormalities, on the other hand, lie at the heart of a specific type of general pathological process known as systemic inflammation (SI). Systemic inflammatory response, cytokine release, cytokine storm, and thrombo-inflammatory syndrome are all terms that refer to different aspects of SI. As a result, the metabolic syndrome model does not adequately reflect the pathophysiology of persistent low-grade systemic inflammation (ChSLGI). Diseases associated with ChSLGI, on the other hand, are risk factors for a severe COVID-19 course. The review examines the role of hypoxia, metabolic dysfunction, scavenger receptors, and pattern-recognition receptors, as well as the processes of the hemophagocytic syndrome, in the systemic alteration and development of SI in COVID-19.

scholarly journals Neural Underpinnings of Obesity: The Role of Oxidative Stress and Inflammation in the Brain

Antioxidants ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1018
Author(s):  
Caitlyn A. Mullins ◽  
Ritchel B. Gannaban ◽  
Md Shahjalal Khan ◽  
Harsh Shah ◽  
Md Abu B. Siddik ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Energy Homeostasis ◽  
Dorsal Striatum ◽  
Brain Regions ◽  
Therapeutic Interventions ◽  
Low Grade ◽  
Obesity Prevalence ◽  
Beneficial Effects ◽  
The Brain

Obesity prevalence is increasing at an unprecedented rate throughout the world, and is a strong risk factor for metabolic, cardiovascular, and neurological/neurodegenerative disorders. While low-grade systemic inflammation triggered primarily by adipose tissue dysfunction is closely linked to obesity, inflammation is also observed in the brain or the central nervous system (CNS). Considering that the hypothalamus, a classical homeostatic center, and other higher cortical areas (e.g. prefrontal cortex, dorsal striatum, hippocampus, etc.) also actively participate in regulating energy homeostasis by engaging in inhibitory control, reward calculation, and memory retrieval, understanding the role of CNS oxidative stress and inflammation in obesity and their underlying mechanisms would greatly help develop novel therapeutic interventions to correct obesity and related comorbidities. Here we review accumulating evidence for the association between ER stress and mitochondrial dysfunction, the main culprits responsible for oxidative stress and inflammation in various brain regions, and energy imbalance that leads to the development of obesity. Potential beneficial effects of natural antioxidant and anti-inflammatory compounds on CNS health and obesity are also discussed.

scholarly journals Hyperleptinemia is associated with parameters of low-grade systemic inflammation and metabolic dysfunction in obese human beings

2013 ◽  
Vol 7 ◽  
Author(s):  
Sonia Leon-Cabrera ◽  
Lourdes Solís-Lozano ◽  
Karina Suárez-Álvarez ◽  
Antonio González-Chávez ◽  
Yadira L. Béjar ◽  
...  
Keyword(s):  
Systemic Inflammation ◽  
Low Grade ◽  
Metabolic Dysfunction ◽  
Human Beings ◽  
Obese Human

scholarly journals Meta-fibrosis links positive energy balance and mitochondrial metabolism to insulin resistance

F1000Research ◽  
2017 ◽  
Vol 6 ◽  
pp. 1758 ◽  
Author(s):  
Daniel S. Lark ◽  
David H. Wasserman
Keyword(s):  
Insulin Resistance ◽  
Extracellular Matrix ◽  
Energy Balance ◽  
Positive Energy ◽  
Extracellular Matrix Remodeling ◽  
Low Grade ◽  
Matrix Remodeling ◽  
Matrix Expansion ◽  
Positive Energy Balance ◽  
Low Grade Inflammation

Obesity and insulin resistance often emerge from positive energy balance and generally are linked to low-grade inflammation. This low-grade inflammation has been called “meta-inflammation” because it is a consequence of the metabolic dysregulation that can accompany overnutrition. One means by which meta-inflammation is linked to insulin resistance is extracellular matrix expansion secondary to meta-inflammation, which we define here as “meta-fibrosis”. The significance of meta-fibrosis is that it reflects a situation in which the extracellular matrix functions as a multi-level integrator of local (for example, mitochondrial reactive oxygen species production) and systemic (for example, inflammation) inputs that couple to cellular processes creating insulin resistance. While adipose tissue extracellular matrix remodeling has received considerable attention, it is becoming increasingly apparent that liver and skeletal muscle extracellular matrix remodeling also contributes to insulin resistance. In this review, we address recent advances in our understanding of energy balance, mitochondrial energetics, meta-inflammation, and meta-fibrosis in the development of insulin resistance.

scholarly journals Central Modulation of Neuroinflammation by Neuropeptides and Energy-Sensing Hormones during Obesity

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Roger Maldonado-Ruiz ◽  
Lizeth Fuentes-Mera ◽  
Alberto Camacho
Keyword(s):  
Immune Response ◽  
Energy Balance ◽  
T Lymphocytes ◽  
Energy Homeostasis ◽  
Inflammatory Responses ◽  
Saturated Fatty Acids ◽  
Positive Energy ◽  
Proinflammatory Response ◽  
Positive Energy Balance ◽  
B And T Lymphocytes

Central nervous system (CNS) senses energy homeostasis by integrating both peripheral and autonomic signals and responding to them by neurotransmitters and neuropeptides release. Although it is previously considered an immunologically privileged organ, we now know that this is not so. Cells belonging to the immune system, such as B and T lymphocytes, can be recruited into the CNS to face damage or infection, in addition to possessing resident immunological cells, called microglia. In this way, positive energy balance during obesity promotes an inflammatory state in the CNS. Saturated fatty acids from the diet have been pointed out as powerful candidates to trigger immune response in peripheral system and in the CNS. However, how central immunity communicates to peripheral immune response remains to be clarified. Recently there has been a great interest in the neuropeptides, POMC derived peptides, ghrelin, and leptin, due to their capacity to suppress or induce inflammatory responses in the brain, respectively. These may be potential candidates to treat different pathologies associated with autoimmunity and inflammation. In this review, we will discuss the role of lipotoxicity associated with positive energy balance during obesity in proinflammatory response in microglia, B and T lymphocytes, and its modulation by neuropeptides.

scholarly journals Metabolic Disturbances in Rat Sublines with Constitutionally Altered Serotonin Homeostasis

2021 ◽  
Vol 22 (10) ◽  
pp. 5400
Author(s):  
Maja Kesić ◽  
Petra Baković ◽  
Ranko Stojković ◽  
Jasminka Štefulj ◽  
Lipa Čičin-Šain
Keyword(s):  
Energy Balance ◽  
Energy Homeostasis ◽  
Whole Body ◽  
Positive Energy ◽  
Net Energy ◽  
Metabolic Disturbances ◽  
Metabolic Genes ◽  
Insulin Tolerance ◽  
Functional Classes ◽  
Positive Energy Balance

Central and peripheral serotonin (5HT) have opposing functions in the regulation of energy homeostasis. Both increasing 5HT signaling in the brain and decreasing 5HT signaling in the periphery have been proposed as potential treatments for obesity. This study investigates the relationship between constitutionally high or low 5HT activity and systemic net energy balance. Two sublines of rats with high and low whole-body 5HT tone, obtained by selective breeding for platelet 5HT parameters, were examined for fat accumulation in different white adipose tissue (WAT) depots, glucose/insulin tolerance, blood metabolic parameters, and expression of various metabolic genes. High-5HT animals, unlike their low-5HT counterparts, developed widespread intra-abdominal obesity associated with glucose and insulin intolerance, which worsened with age. They also had elevated blood glucose and lipid parameters but showed no significant changes in circulating leptin, resistin, and adipsin levels. Surprisingly, adiponectin levels were increased in plasma but reduced in the WAT of high-5HT rats. A limited number of metabolic genes belonging to different functional classes showed differential expression in WAT of high-5HT compared to low-5HT rats. Overall, a constitutive increase in 5HT tone is associated with a positive energy balance acting through subtle dysregulation of a broad spectrum of metabolic pathways.

Hypothalamic regulation of energy homeostasis when consuming diets of different energy concentrations: Comparison between Tibetan and Small-tailed Han sheep

2021 ◽  
pp. 1-25
Author(s):  
Xiaoping Jing ◽  
Yamin Guo ◽  
Allan Degen ◽  
Wenji Wang ◽  
Jingpeng Kang ◽  
...  
Keyword(s):  
Body Weight ◽  
Energy Balance ◽  
Energy Intake ◽  
Energy Homeostasis ◽  
Negative Energy ◽  
Negative Energy Balance ◽  
Positive Energy ◽  
Tibetan Sheep ◽  
Protein Expressions ◽  
Positive Energy Balance

Abstract Seasonal energy intake of Tibetan sheep on the harsh Qinghai-Tibetan Plateau (QTP) fluctuates greatly and is often well below maintenance requirements. The aim of this study was to gain insight into how the hypothalamus regulates energy homeostasis in Tibetan and Small-tailed Han sheep. We compared Tibetan and Small-tailed Han sheep (n=24 of each breed), which were offered one of four diets that differed in digestible energy (DE) densities: 8.21, 9.33, 10.45 and 11.57 MJ/kg dry matter. Sheep were weighed every two weeks, and it was assumed that the change in body weight reflected the change in energy balance. The arcuate nucleus of the hypothalamus in Tibetan sheep had greater protein expressions of neuropeptide Y (NPY) and agouti-related peptide (AgRP) when in negative energy balance, but lesser protein expressions of proopiomelanocortin (POMC) and cocaine and amphetamine-regulated transcript (CART) when in positive energy balance than Small-tailed Han sheep. As a result, Tibetan sheep had a lesser body weight (BW) loss when in negative energy balance and stored more energy and gained more BW when in positive energy balance than Small-tailed Han sheep with the same dietary intake. Moreover, in the hypothalamic AMPK regulation pathway, Tibetan sheep had greater AMPKα2 protein expression than Small-tailed Han sheep, which supported the premise of a better ability to regulate energy homeostasis and better growth performance. These differences in the hypothalamic NPY/AgRP, POMC/CART and AMPK pathways between breeds conferred an advantage to the Tibetan over Small-tailed Han sheep to cope with low energy intake on the harsh QTP.

scholarly journals The Role of the Gut Microbiota in the Gut–Brain Axis in Obesity: Mechanisms and Future Implications

2021 ◽  
Vol 22 (6) ◽  
pp. 2993
Author(s):  
Jamie van Son ◽  
Laura L. Koekkoek ◽  
Susanne E. La Fleur ◽  
Mireille J. Serlie ◽  
Max Nieuwdorp
Keyword(s):  
Gut Microbiota ◽  
Energy Homeostasis ◽  
Positive Energy ◽  
Global Epidemic ◽  
Microbial Dysbiosis ◽  
Socioeconomic System ◽  
Positive Energy Balance ◽  
Brain And Behavior ◽  
Treatment Of Obesity ◽  
And Behavior

Interaction between the gut and the brain is essential for energy homeostasis. In obesity, this homeostasis is disrupted, leading to a positive energy balance and weight gain. Obesity is a global epidemic that affects individual health and strains the socioeconomic system. Microbial dysbiosis has long been reported in obesity and obesity-related disorders. More recent literature has focused on the interaction of the gut microbiota and its metabolites on human brain and behavior. Developing strategies that target the gut microbiota could be a future approach for the treatment of obesity. Here, we review the microbiota–gut–brain axis and possible therapeutic options.

scholarly journals Adipokine inflammation and insulin resistance: the role of glucose, lipids and endotoxin

2012 ◽  
Vol 216 (1) ◽  
pp. T1-T15 ◽  
Author(s):  
M K Piya ◽  
P G McTernan ◽  
S Kumar
Keyword(s):  
Insulin Resistance ◽  
Adipose Tissue ◽  
Human Adipose Tissue ◽  
Dietary Factors ◽  
Positive Energy ◽  
Low Grade ◽  
Positive Energy Balance ◽  
Secretory Tissue ◽  
The Impact ◽  
Low Grade Inflammation

Adipose tissue is an active endocrine organ, and our knowledge of this secretory tissue, in recent years, has led us to completely rethink how our body functions and becomes dysregulated with weight gain. Human adipose tissue appears to act as a multifunctional secretory organ with the capacity to control energy homoeostasis through peripheral and central regulation of energy homoeostasis. It also plays an important role in innate immunity. However, the capability to more than double its original mass to cope with positive energy balance in obesity leads to many pathogenic changes. These changes arise within the adipose tissue as well as inducing secondary detrimental effects on other organs like muscle and liver, including chronic low-grade inflammation mediated by adipocytokines (adipokine inflammation). This inflammation is modulated by dietary factors and nutrients including glucose and lipids, as well as gut bacteria in the form of endotoxin or LPS. The aim of this current review is to consider the impact of nutrients such as glucose and lipids on inflammatory pathways, specifically within adipose tissue. Furthermore, how nutrients such as these can influence adipokine inflammation and consequently insulin resistance directly through their effects on secretion of adipocytokines (TNFα, IL6 and resistin) as well as indirectly through increases in endotoxin is discussed.

STUDY OF HS-CRP AND TNF-A LEVELS IN COPD PATIENTS ACCOMPANIED WITH CORONARY ARTERY DISEASE

2014 ◽  
pp. 48-56
Author(s):  
Van Thi Tran ◽  
Van Bang Le ◽  
Thị Thu Huong Hoang
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Systemic Inflammation ◽  
Chronic Obstructive ◽  
Low Grade ◽  
Cross Sectional ◽  
Copd Patients ◽  
Coronary Artery Angiography ◽  
Hs Crp ◽  
Artery Disease

Aim: Some studies have linked the present of chronic obstructive oulmonary disease (COPD) to coronary artery disease (CAD). Low grade systemic inflammation occurs in patients with COPD as well as patients with CAD. This study was designed to find out the concentration differences of hs-CRP and TNF-a in patients having both chronic obstructive pulmonary and coronary artery diseases with those having either. Methods: A cross - sectional descriptive study was conducted in 200 patients undergoing a coronary artery angiography in the Heart Institute, Thong Nhat Hospital and 115 People Hospital. COPD was diagnosed using GOLD classification. Result: Our study had shown that the levels of hs-CRP and TNF-a were statistically increased in patients with COPD, CAD as well as in patients who had COPD with CAD (p<0,05). The levels of hs-CRP were higher in CAD than in COPD nad the levels of TNF-a were higher in COPD than in CAD. In patients with COPD and CAD, there were increased the levels of both hs-CRP and TNF-a in serum. Conclusion: Systemic inflammation presents in both COPD and CAD. Key words: hs-CRP, TNF-a, coronary artery disease (CAD).

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