scholarly journals Role of Polyphenols and Other Phytochemicals on Molecular Signaling

2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
Swapna Upadhyay ◽  
Madhulika Dixit
Keyword(s):  
Chronic Diseases ◽  
Molecular Signaling ◽  
Beneficial Effects ◽  
Profound Knowledge ◽  
Anti Inflammatory ◽  
Voltage Gated Ion Channels ◽  
Circulating Levels ◽  
And Oxidative Stress ◽  
Significant Attention

Optimized nutrition through supplementation of diet with plant derived phytochemicals has attracted significant attention to prevent the onset of many chronic diseases including cardiovascular impairments, cancer, and metabolic disorder. These phytonutrients alone or in combination with others are believed to impart beneficial effects and play pivotal role in metabolic abnormalities such as dyslipidemia, insulin resistance, hypertension, glucose intolerance, systemic inflammation, and oxidative stress. Epidemiological and preclinical studies demonstrated that fruits, vegetables, and beverages rich in carotenoids, isoflavones, phytoestrogens, and phytosterols delay the onset of atherosclerosis or act as a chemoprotective agent by interacting with the underlying pathomechanisms. Phytochemicals exert their beneficial effects either by reducing the circulating levels of cholesterol or by inhibiting lipid oxidation, while others exhibit anti-inflammatory and antiplatelet activities. Additionally, they reduce neointimal thickening by inhibiting proliferation of smooth muscle cells and also improve endothelium dependent vasorelaxation by modulating bioavailability of nitric-oxide and voltage-gated ion channels. However, detailed and profound knowledge on specific molecular targets of each phytochemical is very important to ensure safe use of these active compounds as a therapeutic agent. Thus, this paper reviews the active antioxidative, antiproliferative, anti-inflammatory, or antiangiogenesis role of various phytochemicals for prevention of chronic diseases.

scholarly journals Role of Thioredoxin-Interacting Protein in Diseases and Its Therapeutic Outlook

2021 ◽  
Vol 22 (5) ◽  
pp. 2754
Author(s):  
Naila Qayyum ◽  
Muhammad Haseeb ◽  
Moon Suk Kim ◽  
Sangdun Choi
Keyword(s):  
Interacting Protein ◽  
Thioredoxin Interacting Protein ◽  
Signaling Complex ◽  
Current Review ◽  
Wide Range ◽  
Range Of Functions ◽  
Species Production ◽  
And Oxidative Stress ◽  
Significant Attention

Thioredoxin-interacting protein (TXNIP), widely known as thioredoxin-binding protein 2 (TBP2), is a major binding mediator in the thioredoxin (TXN) antioxidant system, which involves a reduction-oxidation (redox) signaling complex and is pivotal for the pathophysiology of some diseases. TXNIP increases reactive oxygen species production and oxidative stress and thereby contributes to apoptosis. Recent studies indicate an evolving role of TXNIP in the pathogenesis of complex diseases such as metabolic disorders, neurological disorders, and inflammatory illnesses. In addition, TXNIP has gained significant attention due to its wide range of functions in energy metabolism, insulin sensitivity, improved insulin secretion, and also in the regulation of glucose and tumor suppressor activities in various cancers. This review aims to highlight the roles of TXNIP in the field of diabetology, neurodegenerative diseases, and inflammation. TXNIP is found to be a promising novel therapeutic target in the current review, not only in the aforementioned diseases but also in prolonged microvascular and macrovascular diseases. Therefore, TXNIP inhibitors hold promise for preventing the growing incidence of complications in relevant diseases.

scholarly journals Multiple Disruptions of Glial-Neuronal Networks in Epileptogenesis That Follows Prolonged Febrile Seizures

2021 ◽  
Vol 12 ◽  
Author(s):  
Gary P. Brennan ◽  
Megan M. Garcia-Curran ◽  
Katelin P. Patterson ◽  
Renhao Luo ◽  
Tallie Z. Baram
Keyword(s):  
Neuronal Networks ◽  
Day Treatment ◽  
High Mobility ◽  
Febrile Seizures ◽  
Experimental Models ◽  
Normal Brain ◽  
Molecular Signaling ◽  
Rat Pups ◽  
Anti Inflammatory

Background and Rationale: Bi-directional neuronal-glial communication is a critical mediator of normal brain function and is disrupted in the epileptic brain. The potential role of aberrant microglia and astrocyte function during epileptogenesis is important because the mediators involved provide tangible targets for intervention and prevention of epilepsy. Glial activation is intrinsically involved in the generation of childhood febrile seizures (FS), and prolonged FS (febrile status epilepticus, FSE) antecede a proportion of adult temporal lobe epilepsy (TLE). Because TLE is often refractory to treatment and accompanied by significant memory and emotional difficulties, we probed the role of disruptions of glial-neuronal networks in the epileptogenesis that follows experimental FSE (eFSE).Methods: We performed a multi-pronged examination of neuronal-glia communication and the resulting activation of molecular signaling cascades in these cell types following eFSE in immature mice and rats. Specifically, we examined pathways involving cytokines, microRNAs, high mobility group B-1 (HMGB1) and the prostaglandin E2 signaling. We aimed to block epileptogenesis using network-specific interventions as well as via a global anti-inflammatory approach using dexamethasone.Results: (A) eFSE elicited a strong inflammatory response with rapid and sustained upregulation of pro-inflammatory cytokines. (B) Within minutes of the end of the eFSE, HMGB1 translocated from neuronal nuclei to dendrites, en route to the extracellular space and glial Toll-like receptors. Administration of an HMGB1 blocker to eFSE rat pups did not decrease expression of downstream inflammatory cascades and led to unacceptable side effects. (C) Prolonged seizure-like activity caused overall microRNA-124 (miR-124) levels to plunge in hippocampus and release of this microRNA from neurons via extra-cellular vesicles. (D) Within hours of eFSE, structural astrocyte and microglia activation was associated not only with cytokine production, but also with activation of the PGE2 cascade. However, administration of TG6-10-1, a blocker of the PGE2 receptor EP2 had little effect on spike-series provoked by eFSE. (E) In contrast to the failure of selective interventions, a 3-day treatment of eFSE–experiencing rat pups with the broad anti-inflammatory drug dexamethasone attenuated eFSE-provoked pro-epileptogenic EEG changes.Conclusions: eFSE, a provoker of TLE-like epilepsy in rodents leads to multiple and rapid disruptions of interconnected glial-neuronal networks, with a likely important role in epileptogenesis. The intricate, cell-specific and homeostatic interplays among these networks constitute a serious challenge to effective selective interventions that aim to prevent epilepsy. In contrast, a broad suppression of glial-neuronal dysfunction holds promise for mitigating FSE-induced hyperexcitability and epileptogenesis in experimental models and in humans.

In Inflamation Dietary Inflammatory Index and the Role of Different Diet Types

2020 ◽  
pp. 169-201
Author(s):  
Ramazan Mert Atan ◽  
Uğur Günşen
Keyword(s):  
Chronic Diseases ◽  
Inflammatory Cytokines ◽  
Scientific Evidence ◽  
Inflammatory Biomarkers ◽  
Dietary Inflammatory Index ◽  
Food Groups ◽  
Negative Effects ◽  
Inflammatory Index ◽  
Anti Inflammatory

Inflammation usually occurs as a result of imbalances between pro-inflammatory and anti-inflammatory cytokines. Diet is one of the factors that play a role in their development and prevent them from developing. Therefore, it is important to determine the pro- and anti-inflammatory properties of foods. Diet is an important and modifiable determinant of chronic diseases. There is a lot of scientific evidence to support the fact that foods consumed have positive and negative effects on individuals' health. In addition to being effective whole of diet, it is seen that the food groups contained in the diet affect the inflammatory biomarkers separately. This section provides information about dietary inflammatory index (DII) and diets that are effective on inflammation.

scholarly journals Enhanced circulating levels of CD3 cells-derived extracellular vesicles in different forms of pulmonary hypertension

2019 ◽  
Vol 9 (3) ◽  
pp. 204589401986435 ◽  
Author(s):  
Djuro Kosanovic ◽  
Ujjwal Deo ◽  
Henning Gall ◽  
Balachandar Selvakumar ◽  
Susanne Herold ◽  
...  
Keyword(s):  
T Cells ◽  
Endothelial Cells ◽  
Pulmonary Hypertension ◽  
Extracellular Vesicles ◽  
Inflammatory Cells ◽  
Circulating Endothelial Cells ◽  
Profound Knowledge ◽  
Life Threatening ◽  
Circulating Levels

It has been shown previously that increased circulating endothelial cells-derived extracellular vesicles represent an important pathological attribute of pulmonary hypertension. Although it is a well-known fact that inflammatory cells may also release extracellular vesicles, and pulmonary hypertension is a disease associated with abnormal inflammation, there is no profound knowledge with regard to the role of inflammatory cells-derived extracellular vesicles. Therefore, our study demonstrated that circulating levels of extracellular vesicles derived from T-cells are enhanced in various pulmonary hypertension forms and that endothelial cells-derived extracellular vesicles may have distinctive profiles in different clinical subgroups of pulmonary hypertension, which still remains as a poorly treatable and life-threatening disorder.

scholarly journals Dietary Melatonin Supplementation Could Be a Promising Preventing/Therapeutic Approach for a Variety of Liver Diseases

Nutrients ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1135 ◽  
Author(s):  
Francesca Bonomini ◽  
Elisa Borsani ◽  
Gaia Favero ◽  
Luigi Rodella ◽  
Rita Rezzani
Keyword(s):  
Liver Diseases ◽  
Molecular Mechanisms ◽  
Antioxidant Properties ◽  
Therapeutic Strategies ◽  
Beneficial Effects ◽  
Pathological Conditions ◽  
Positive Effect ◽  
And Oxidative Stress

In the therapeutic strategies, the role of diet is a well-established factor that can also have an important role in liver diseases. Melatonin, identified in animals, has many antioxidant properties and it was after discovered also in plants, named phytomelatonin. These substances have a positive effect during aging and in pathological conditions too. In particular, it is important to underline that the amount of melatonin produced by pineal gland in human decreases during lifetime and its reduction in blood could be related to pathological conditions in which mitochondria and oxidative stress play a pivotal role. Moreover, it has been indicated that melatonin/phytomelatonin containing foods may provide dietary melatonin, so their ingestion through balanced diets could be sufficient to confer health benefits. In this review, the classification of liver diseases and an overview of the most important aspects of melatonin/phytomelatonin, concerning the differences among their synthesis, their presence in foods and their role in health and diseases, are summarized. The findings suggest that melatonin/phytomelatonin supplementation with diet should be considered important in preventing different disease settings, in particular in liver. Currently, more studies are needed to strengthen the potential beneficial effects of melatonin/phytomelatonin in liver diseases and to better clarify the molecular mechanisms of action.

scholarly journals Inflammatory Mechanisms Associated with Skeletal Muscle Sequelae after Stroke: Role of Physical Exercise

2016 ◽  
Vol 2016 ◽  
pp. 1-19 ◽  
Author(s):  
Hélio José Coelho Junior ◽  
Bruno Bavaresco Gambassi ◽  
Tiego Aparecido Diniz ◽  
Isabela Maia da Cruz Fernandes ◽  
Érico Chagas Caperuto ◽  
...  
Keyword(s):  
Risk Factors ◽  
Skeletal Muscle ◽  
Physical Exercise ◽  
Muscle Atrophy ◽  
Inflammatory Markers ◽  
The Other ◽  
Stroke Patients ◽  
Beneficial Effects ◽  
Anti Inflammatory

Inflammatory markers are increased systematically and locally (e.g., skeletal muscle) in stroke patients. Besides being associated with cardiovascular risk factors, proinflammatory cytokines seem to play a key role in muscle atrophy by regulating the pathways involved in this condition. As such, they may cause severe decrease in muscle strength and power, as well as impairment in cardiorespiratory fitness. On the other hand, physical exercise (PE) has been widely suggested as a powerful tool for treating stroke patients, since PE is able to regenerate, even if partially, physical and cognitive functions. However, the mechanisms underlying the beneficial effects of physical exercise in poststroke patients remain poorly understood. Thus, in this study we analyze the candidate mechanisms associated with muscle atrophy in stroke patients, as well as the modulatory effect of inflammation in this condition. Later, we suggest the two strongest anti-inflammatory candidate mechanisms, myokines and the cholinergic anti-inflammatory pathway, which may be activated by physical exercise and may contribute to a decrease in proinflammatory markers of poststroke patients.

scholarly journals Efficient and Divergent Enantioselective Syntheses of DHPVs and Anti-Inflammatory Effect on IEC-6 Cells

Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2215
Author(s):  
Hyun Su Kim ◽  
Sungkyun Chung ◽  
Moon-Young Song ◽  
Changjin Lim ◽  
Hyeyoung Shin ◽  
...  
Keyword(s):  
Beneficial Effects ◽  
Asymmetric Dihydroxylation ◽  
Cross Metathesis ◽  
Molecular Therapeutics ◽  
Inflammatory Bowel ◽  
Anti Inflammatory ◽  
Enantioselective Syntheses ◽  
Precise Molecular Mechanism ◽  
Significant Attention ◽  
Inflammatory Effect

Despite numerous reports on the beneficial effects of catechin or epicatechin contained in tea and cacao extract on human health, a conclusive and precise molecular mechanism has not been elucidated. Metabolism of chemical compounds in gut microbiota recently gained significant attention, and extensive studies have been devoted in this field. In conjunction with these results, our group focused on the anti-inflammatory effects of both enantiomers of DHPV (5-(3′,4′-dihydroxyphenyl)-γ-valerolactone), produced in the intestine by microbiota metabolism, on IEC-6 cells. Divergent and efficient enantioselective synthesis of (S)- and (R)-DHPV was efficiently achieved by cross-metathesis and Sharpless asymmetric dihydroxylation as a key reaction for four steps in 16% and 14% overall yields, respectively. The anti-inflammatory effects of two enantiomers were tested on IEC-6 cells, and we found that (S)-DHPV was more active than (R)-DHPV. This result implicates that the metabolite produced in the gut has beneficial effects on IEC-6 cells of rat intestines, and the chirality of the metabolite is important for its anti-inflammatory activity. This also provided information for the future discovery of novel small molecular therapeutics for the treatment of inflammatory bowel disease.

scholarly journals Inflammation and Oxidative Stress in Chronic Kidney Disease—Potential Therapeutic Role of Minerals, Vitamins and Plant-Derived Metabolites

2019 ◽  
Vol 21 (1) ◽  
pp. 263 ◽  
Author(s):  
Shara Francesca Rapa ◽  
Biagio Raffaele Di Iorio ◽  
Pietro Campiglia ◽  
August Heidland ◽  
Stefania Marzocco
Keyword(s):  
Oxidative Stress ◽  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Antioxidant Properties ◽  
Small Sample ◽  
Beneficial Effects ◽  
Antioxidant Agents ◽  
Antioxidative Agents ◽  
Anti Inflammatory ◽  
And Oxidative Stress

Chronic kidney disease (CKD) is a debilitating pathology with various causal factors, culminating in end stage renal disease (ESRD) requiring dialysis or kidney transplantation. The progression of CKD is closely associated with systemic inflammation and oxidative stress, which are responsible for the manifestation of numerous complications such as malnutrition, atherosclerosis, coronary artery calcification, heart failure, anemia and mineral and bone disorders, as well as enhanced cardiovascular mortality. In addition to conventional therapy with anti-inflammatory and antioxidative agents, growing evidence has indicated that certain minerals, vitamins and plant-derived metabolites exhibit beneficial effects in these disturbances. In the current work, we review the anti-inflammatory and antioxidant properties of various agents which could be of potential benefit in CKD/ESRD. However, the related studies were limited due to small sample sizes and short-term follow-up in many trials. Therefore, studies of several anti-inflammatory and antioxidant agents with long-term follow-ups are necessary.

scholarly journals Berries as a Treatment for Obesity-Induced Inflammation: Evidence from Preclinical Models

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 334
Author(s):  
Hannah Land Lail ◽  
Rafaela G. Feresin ◽  
Dominique Hicks ◽  
Blakely Stone ◽  
Emily Price ◽  
...  
Keyword(s):  
Chronic Diseases ◽  
Low Grade ◽  
Bioactive Components ◽  
Preclinical Models ◽  
Beneficial Effects ◽  
Increased Risk ◽  
Anti Inflammatory ◽  
Treatment Of Obesity ◽  
Low Grade Inflammation

Inflammation that accompanies obesity is associated with the infiltration of metabolically active tissues by inflammatory immune cells. This propagates a chronic low-grade inflammation associated with increased signaling of common inflammatory pathways such as NF-κB and Toll-like receptor 4 (TLR4). Obesity-associated inflammation is linked to an increased risk of chronic diseases, including type 2 diabetes, cardiovascular disease, and cancer. Preclinical rodent and cell culture studies provide robust evidence that berries and their bioactive components have beneficial effects not only on inflammation, but also on biomarkers of many of these chronic diseases. Berries contain an abundance of bioactive compounds that have been shown to inhibit inflammation and to reduce reactive oxygen species. Therefore, berries represent an intriguing possibility for the treatment of obesity-induced inflammation and associated comorbidities. This review summarizes the anti-inflammatory properties of blackberries, blueberries, strawberries, and raspberries. This review highlights the anti-inflammatory mechanisms of berries and their bioactive components that have been elucidated through the use of preclinical models. The primary mechanisms mediating the anti-inflammatory effects of berries include a reduction in NF-κB signaling that may be secondary to reduced oxidative stress, a down-regulation of TLR4 signaling, and an increase in Nrf2.

scholarly journals Olive Polyphenols: Antioxidant and Anti-Inflammatory Properties

Antioxidants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1044
Author(s):  
Monica Bucciantini ◽  
Manuela Leri ◽  
Pamela Nardiello ◽  
Fiorella Casamenti ◽  
Massimo Stefani
Keyword(s):  
Oxidative Stress ◽  
Chronic Diseases ◽  
Meta Analysis ◽  
Virgin Olive Oil ◽  
Bioactive Molecules ◽  
Therapeutic Effects ◽  
Molecular Signaling ◽  
Anti Inflammatory

Oxidative stress and inflammation triggered by increased oxidative stress are the cause of many chronic diseases. The lack of anti-inflammatory drugs without side-effects has stimulated the search for new active substances. Plant-derived compounds provide new potential anti-inflammatory and antioxidant molecules. Natural products are structurally optimized by evolution to serve particular biological functions, including the regulation of endogenous defense mechanisms and interaction with other organisms. This property explains their relevance for infectious diseases and cancer. Recently, among the various natural substances, polyphenols from extra virgin olive oil (EVOO), an important element of the Mediterranean diet, have aroused growing interest. Extensive studies have shown the potent therapeutic effects of these bioactive molecules against a series of chronic diseases, such as cardiovascular diseases, diabetes, neurodegenerative disorders and cancer. This review begins from the chemical structure, abundance and bioavailability of the main EVOO polyphenols to highlight the effects and the possible molecular mechanism(s) of action of these compounds against inflammation and oxidation, in vitro and in vivo. In addition, the mechanisms of inhibition of molecular signaling pathways activated by oxidative stress by EVOO polyphenols are discussed, together with their possible roles in inflammation-mediated chronic disorders, also taking into account meta-analysis of population studies and clinical trials.

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