scholarly journals Effects of Hyperoxia on Oxygen-Related Inflammation with a Focus on Obesity

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Pedro González-Muniesa ◽  
Laura Garcia-Gerique ◽  
Pablo Quintero ◽  
Suyen Arriaza ◽  
Amaya Lopez-Pascual ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Biological Response ◽  
Modern Medicine ◽  
Low Oxygen ◽  
Beneficial Effects ◽  
Low Degree ◽  
Hyperoxia Exposure ◽  
Inflammatory Processes ◽  
Obese Subjects ◽  
Oxygen Concentrations

Several studies have shown a pathological oxygenation (hypoxia/hyperoxia) on the adipose tissue in obese subjects. Additionally, the excess of body weight is often accompanied by a state of chronic low-degree inflammation. The inflammation phenomenon is a complex biological response mounted by tissues to combat injurious stimuli in order to maintain cell homeostasis. Furthermore, it is believed that the abnormal oxygen partial pressure occurring in adipose tissue is involved in triggering inflammatory processes. In this context, oxygen is used in modern medicine as a treatment for several diseases with inflammatory components. Thus, hyperbaric oxygenation has demonstrated beneficial effects, apart from improving local tissue oxygenation, on promoting angiogenesis, wound healing, providing neuroprotection, facilitating glucose uptake, appetite, and others. Nevertheless, an excessive hyperoxia exposure can lead to deleterious effects such as oxidative stress, pulmonary edema, and maybe inflammation. Interestingly, some of these favorable outcomes occur under high and low oxygen concentrations. Hereby, we review a potential therapeutic approach to the management of obesity as well as the oxygen-related inflammation accompanying expanded adipose tissue, based on elevated oxygen concentrations. To conclude, we highlight at the end of this review some areas that need further clarification.

Effects of oxygen concentration on the metabolism of

1989 ◽  
Vol 1 (2) ◽  
pp. 99 ◽  
Author(s):  
NK Khurana ◽  
RG Wales
Keyword(s):  
Carbon Dioxide ◽  
Oxygen Concentration ◽  
Glycogen Content ◽  
Carbon Dioxide Production ◽  
Morphological Development ◽  
Low Oxygen ◽  
Beneficial Effects ◽  
Low Oxygen Concentration ◽  
Oxygen Concentrations

The utilization of the acid-soluble glycogen pool in pulse-labelled embryos was significantly enhanced during 24- and 48-h chase culture under low oxygen concentrations of 5, 2.5 and 1%. The lower the oxygen tension the greater was the turnover in the pool. The morphological development of embryos was equally as good at very low oxygen concentrations as when embryos were cultured in 5-20% oxygen. Reduction in oxygen concentration enhanced the oxidative utilization of substrate, as measured by rate of carbon dioxide production. The present study could provide an explanation for the discrepancy in glycogen content between mouse blastocysts developing in utero and in vitro and for the reported beneficial effects of low oxygen concentration during development of embryos in culture.

scholarly journals The Action of Vitamin D in Adipose Tissue: Is There the Link between Vitamin D Deficiency and Adipose Tissue-Related Metabolic Disorders?

2022 ◽  
Vol 23 (2) ◽  
pp. 956
Author(s):  
Izabela Szymczak-Pajor ◽  
Krystian Miazek ◽  
Anna Selmi ◽  
Aneta Balcerczyk ◽  
Agnieszka Śliwińska
Keyword(s):  
Vitamin D ◽  
Adipose Tissue ◽  
Metabolic Disorders ◽  
Regulation Of Gene Expression ◽  
Experimental Studies ◽  
Molecular Response ◽  
Inflammatory Cytokine Production ◽  
Beneficial Effects ◽  
Obese Subjects ◽  
And Oxidative Stress

Adipose tissue plays an important role in systemic metabolism via the secretion of adipocytokines and storing and releasing energy. In obesity, adipose tissue becomes dysfunctional and characterized by hypertrophied adipocytes, increased inflammation, hypoxia, and decreased angiogenesis. Although adipose tissue is one of the major stores of vitamin D, its deficiency is detective in obese subjects. In the presented review, we show how vitamin D regulates numerous processes in adipose tissue and how their dysregulation leads to metabolic disorders. The molecular response to vitamin D in adipose tissue affects not only energy metabolism and adipokine and anti-inflammatory cytokine production via the regulation of gene expression but also genes participating in antioxidant defense, adipocytes differentiation, and apoptosis. Thus, its deficiency disturbs adipocytokines secretion, metabolism, lipid storage, adipogenesis, thermogenesis, the regulation of inflammation, and oxidative stress balance. Restoring the proper functionality of adipose tissue in overweight or obese subjects is of particular importance in order to reduce the risk of developing obesity-related complications, such as cardiovascular diseases and diabetes. Taking into account the results of experimental studies, it seemed that vitamin D may be a remedy for adipose tissue dysfunction, but the results of the clinical trials are not consistent, as some of them show improvement and others no effect of this vitamin on metabolic and insulin resistance parameters. Therefore, further studies are required to evaluate the beneficial effects of vitamin D, especially in overweight and obese subjects, due to the presence of a volumetric dilution of this vitamin among them.

scholarly journals Inflammation of the adipose tissue (part 7). Non-medicamental treatment

2012 ◽  
Vol 58 (2) ◽  
pp. 62-70
Author(s):  
V Ia Shvarts
Keyword(s):  
Physical Activity ◽  
Adipose Tissue ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Low Calorie ◽  
Beneficial Effects ◽  
Low Calorie Diet ◽  
Calorie Diet ◽  
Inflammatory Processes ◽  
Stimulation Of

This review contains experimental and clinical data on the suppression of inflammatory processes in the adipose tissue under effect of regular physical activity and low-calorie diet. An important role in the suppression of the inflammatory processes is played by the reduction of the degree of obesity, stimulation of glucocorticoid secretion, improvement of glucose tolerance, and activation of hormesis. The beneficial effects of low-calorie fat mimetics, such as omega-3-fatty acids and resveratol, naringenin, hesperidin, curcumin, and Mediterranian diet, are discussed.

Short Dietary Intervention with Olive Oil Increases Brown Adipose Tissue Activity in Lean But Not Overweight/Obese Subjects

2020 ◽  
Author(s):  
Milena Monfort-Pires ◽  
Muuez U-Din ◽  
Guilherme A. Nogueira ◽  
Juliana de Almeida-Faria ◽  
Davi Sidarta-Oliveira ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Brown Adipose Tissue ◽  
Olive Oil ◽  
Dietary Intervention ◽  
Brown Adipose ◽  
Obese Subjects ◽  
Brown Adipose Tissue Activity

Targeting AMPK in Diabetes and Diabetic Complications: Energy Homeostasis, Autophagy and Mitochondrial Health

2019 ◽  
Vol 26 (27) ◽  
pp. 5207-5229 ◽  
Author(s):  
Y.V. Madhavi ◽  
Nikhil Gaikwad ◽  
Veera Ganesh Yerra ◽  
Anil Kumar Kalvala ◽  
Srinivas Nanduri ◽  
...  
Keyword(s):  
Diabetic Complications ◽  
Energy Homeostasis ◽  
Cardiovascular Complications ◽  
Living System ◽  
Animal Models Of Disease ◽  
Beneficial Effects ◽  
Inflammatory Processes ◽  
Energy Sensing ◽  
Healthy Functioning ◽  
Models Of Disease

Adenosine 5′-monophosphate activated protein kinase (AMPK) is a key enzymatic protein involved in linking the energy sensing to the metabolic manipulation. It is a serine/threonine kinase activated by several upstream kinases. AMPK is a heterotrimeric protein complex regulated by AMP, ADP, and ATP allosterically. AMPK is ubiquitously expressed in various tissues of the living system such as heart, kidney, liver, brain and skeletal muscles. Thus malfunctioning of AMPK is expected to harbor several human pathologies especially diseases associated with metabolic and mitochondrial dysfunction. AMPK activators including synthetic derivatives and several natural products that have been found to show therapeutic relief in several animal models of disease. AMP, 5-Aminoimidazole-4-carboxamide riboside (AICA riboside) and A769662 are important activators of AMPK which have potential therapeutic importance in diabetes and diabetic complications. AMPK modulation has shown beneficial effects against diabetes, cardiovascular complications and diabetic neuropathy. The major impact of AMPK modulation ensures healthy functioning of mitochondria and energy homeostasis in addition to maintaining a strict check on inflammatory processes, autophagy and apoptosis. Structural studies on AMP and AICAR suggest that the free amino group is imperative for AMPK stimulation. A769662, a non-nucleoside thienopyridone compound which resulted from the lead optimization studies on A-592107 and several other related compound is reported to exhibit a promising effect on diabetes and its complications through activation of AMPK. Subsequent to the discovery of A769662, several thienopyridones, hydroxybiphenyls pyrrolopyridones have been reported as AMPK modulators. The review will explore the structure-function relationships of these analogues and the prospect of targeting AMPK in diabetes and diabetic complications.

Boswellia serrata Oleo-Gum-Resin and its Effect on Memory Functions: A Review

2020 ◽  
Vol 10 (4) ◽  
pp. 355-363
Author(s):  
Mohaddese Mahboubi ◽  
Leila Mohammad Taghizadeh Kashani
Keyword(s):  
Memory Loss ◽  
Modern Medicine ◽  
Waste Materials ◽  
Boswellia Serrata ◽  
Memory Functions ◽  
Beneficial Effects ◽  
Waste Production ◽  
Nursing Mothers ◽  
Traditional Practitioners ◽  
The Brain

Background: In Iranian Traditional Medicine, Boswellia serrata oleo-gum resins were used for the treatment of "Nisyan". "Nisyan" was equivalent to a reduction of memory or forgetfulness. Objective: This review evaluates the traditional believes of B. serrata and memory and its effectiveness on memory loss. Methods: We extracted all traditional and modern information on B. serrata oleo-gum resin preparations and memory from scientific accessible resources (Google Scholar, PubMed, Springer, Science direct, Wiley), non-accessible resources and traditional books. Results: In traditional manuscripts, "Nisyan" is equal to memory loss in modern medicine and was believed to happen as the result of pouring the waste materials into the brain. Traditional practitioners treated "Nisyan" by inhibition of waste production in the brain or cleaning the brain from waste materials. They recommended using the plants with warming effects on the brain. It was believed that B. serrata had beneficial effects on memory functions and its memory enhancing effects have been the subject of pharmacological and clinical trial studies. Conclusion: Despite some documents on the effectiveness of B. serrata oleo-gum-resin on memory functions, there is gap between these investigations, especially in pregnant and nursing mothers. More investigations with large clinical trials are required to complete flaw in order to improve the therapeutic applications of B. serrata on memory functions.

Antidiabetic Properties of Medicinal Mushrooms with Special Reference to Phellinus Species: A Review

2020 ◽  
Vol 10 ◽  
Author(s):  
Thekkuttuparambil A Ajith ◽  
Kynoor K Janardhanan
Keyword(s):  
Nutritional Value ◽  
Modern Medicine ◽  
Lifestyle Changes ◽  
Controlled Clinical Trials ◽  
Chronic Complications ◽  
Medicinal Mushrooms ◽  
Beneficial Effects ◽  
First Line Therapy ◽  
Public Health Challenge ◽  
Microvascular Diseases

: Diabetes remains the major public health challenge to 21st century. It is strongly related to lifestyle changes. Most chronic complications of diabetes are macrovascular and microvascular diseases resulting from the existing hyperglycemic status. Failure of first line therapy which is based on diet modifications and exercise, conventional treatment using antihyperglycemic agents with different mechanisms of action will be implemented for type II diabetes in modern medicine. Higher Basidiomycetes mushrooms are highly praised for their nutritional value and pharmacological properties. They have long been used traditionally for the maintenance of health, prevention and treatment of various human ailments. Reports indicate the beneficial effects of medicinal mushrooms in diabetes treatments. However, scientific evidences are insufficient to make definitive conclusions on the efficacy of individual medicinal mushrooms. Mushrooms belong to the genera Phellinus such as Phellinus linteus, Phellinus ribis, Phellinus rimosus and Phellinus igniarius. They possess significant hypoglycemic effect in experimental diabetic models. However, well-designed controlled clinical trials are needed to establish their safety and bioactivity.

scholarly journals An Overview of Adipose Tissue ACE2 Modulation by Diet and Obesity. Potential Implications in COVID-19 Infection and Severity

2021 ◽  
Vol 22 (15) ◽  
pp. 7975
Author(s):  
Saioa Gómez-Zorita ◽  
Iñaki Milton-Laskibar ◽  
Laura García-Arellano ◽  
Marcela González ◽  
María P. Portillo
Keyword(s):  
Adipose Tissue ◽  
Protective Role ◽  
Inflammatory Factors ◽  
Current Evidence ◽  
Disease Outcomes ◽  
Lower Activation ◽  
Two Factors ◽  
Obese Subjects ◽  
Ace2 Gene

The present review is aimed at analysing the current evidence concerning the potential modulation of obesity and/or diet in adipose tissue ACE2. Additionally, the potential implications of these effects on COVID-19 are also addressed. The results published show that diet and obesity are two factors that effectively influence the expression of Ace2 gene in adipose tissue. However, the shifts in this gene do not always occur in the same direction, nor with the same intensity. Additionally, there is no consensus regarding the implications of increased adipose tissue ACE2 expression in health. Thus, while in some studies a protective role is attributed to ACE2 overexpression, other studies suggest otherwise. Similarly, there is much debate regarding the role played by ACE2 in COVID-19 in terms of degree of infection and disease outcomes. The greater risk of infection that may hypothetically derive from enhanced ACE2 expression is not clear since the functionality of the enzyme seems to be as important as the abundance. Thus, the greater abundance of ACE2 in adipose tissue of obese subjects may be counterbalanced by its lower activation. In addition, a protective role of ACE2 overexpression has also been suggested, associated with the increase in anti-inflammatory factors that it may produce.

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