scholarly journals Potential Therapeutic Targets of Epigallocatechin Gallate (EGCG), the Most Abundant Catechin in Green Tea, and Its Role in the Therapy of Various Types of Cancer

Molecules ◽  
2020 ◽  
Vol 25 (14) ◽  
pp. 3146 ◽  
Author(s):  
Saleh A. Almatroodi ◽  
Ahmad Almatroudi ◽  
Amjad Ali Khan ◽  
Fahad A. Alhumaydhi ◽  
Mohammed A. Alsahli ◽  
...  
Keyword(s):  
Clinical Trials ◽  
Green Tea ◽  
Epigallocatechin Gallate ◽  
Mechanisms Of Action ◽  
Chemopreventive Agents ◽  
Cancer Management ◽  
Anti Cancer ◽  
Chemopreventive Effect ◽  
Cell Signaling Pathways

Epigallocatechin-3-gallate (EGCG), an active compound of green tea and its role in diseases cure and prevention has been proven. Its role in diseases management can be attributed to its antioxidant and anti-inflammatory properties. The anti-cancer role of this green tea compound has been confirmed in various types of cancer and is still being under explored. EGCG has been proven to possess a chemopreventive effect through inhibition of carcinogenesis process such as initiation, promotion, and progression. In addition, this catechin has proven its role in cancer management through modulating various cell signaling pathways such as regulating proliferation, apoptosis, angiogenesis and killing of various types of cancer cells. The additive or synergistic effect of epigallocatechin with chemopreventive agents has been verified as it reduces the toxicities and enhances the anti-cancerous effects. Despite its effectiveness and safety, the implications of EGCG in cancer prevention is certainly still discussed due to a poor bioavailability. Several studies have shown the ability to overcome poor bioavailability through nanotechnology-based strategies such as encapsulation, liposome, micelles, nanoparticles and various other formulation. In this review, we encapsulate therapeutic implication of EGCG in cancer management and the mechanisms of action are discussed with an emphasis on human clinical trials.

scholarly journals ANALYSIS OF IFN- CONCENTRATION IN WISTAR RAT BLOOD AFTER ORAL ADMINISTRATION OF STANDARDIZED GREEN TEA WATER EXTRACT

2010 ◽  
Vol 10 (3) ◽  
pp. 390-395
Author(s):  
Djoko Agus Purwanto ◽  
Retno Pudji Rahayu ◽  
A. Toto Purnomo
Keyword(s):  
Oral Administration ◽  
Green Tea ◽  
Blood Concentration ◽  
Inhibitory Action ◽  
Epigallocatechin Gallate ◽  
Water Extract ◽  
Wistar Rat ◽  
Mechanisms Of Action ◽  
Chemopreventive Agents ◽  
Male And Female

Green tea and its polyphenols have been studied extensively as cancer chemopreventive agents in recent years. However, the mechanisms of action are still not clearly understood. Some researchers suggest that immune system plays important role to destroy cancer cells. Because of that reason, the present study was designed to analyse the effects of oral administration standardized green tea water extract on increasing of IFN-g blood concentration and to elucidate possible mechanisms involved in the inhibitory action of the cancer development. Two groups (male and female) of 5 rats have given p.o. administration 1.25% of standardized green tea water extract and got 300 mg of (-)-epigallocatechin gallate (EGCG)/kg body weight, while two groups others (male and female) were used as control. We found that IFN-g blood concentration on male and female Wistar rat are significantly increase with 13.11% and 17.59%, respectively (p

scholarly journals Implications of Green Tea and Its Constituents in the Prevention of Cancer via the Modulation of Cell Signalling Pathway

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Arshad H. Rahmani ◽  
Fahad M. Al shabrmi ◽  
Khaled S. Allemailem ◽  
Salah M. Aly ◽  
Masood A. Khan
Keyword(s):  
Green Tea ◽  
Biological Activities ◽  
Cell Signalling ◽  
Epigallocatechin Gallate ◽  
Chemopreventive Agents ◽  
Beneficial Effects ◽  
Prevention And Treatment ◽  
Prevention Of Cancer ◽  
Cell Signalling Pathway ◽  
Cell Signaling Pathways

Green tea is commonly used as a beverage worldwide, especially in China, Japan, Morocco, and Saudi Arabia. Green tea and its constituents have been considered very effective in the prevention and treatment of various diseases. It contains a variety of catechins, which show a pivotal role in the modulation of biological activities and also act as chemopreventive agents. Earlier studies have confirmed that green tea and its chief constituent epigallocatechin gallate (EGCG) have a potential role in the management of cancer through the modulation of cell signaling pathways. In this review, we focused on the beneficial effects of green tea and its constituents in the cancer prevention and treatment and its impact on modulation of molecular pathways.

Biological role of AKT, and regulation of AKT signaling pathway by thymoquinone: perspectives in cancer therapeutics

2020 ◽  
Vol 20 ◽  
Author(s):  
Md. Junaid ◽  
Yeasmin Akter ◽  
Syeda Samira Afrose ◽  
Mousumi Tania ◽  
Md. Asaduzzaman Khan
Keyword(s):  
Clinical Trials ◽  
Signaling Pathways ◽  
Signaling Pathway ◽  
Inhibitory Effect ◽  
Akt Signaling ◽  
Review Article ◽  
Therapeutic Drug ◽  
Akt Signaling Pathway ◽  
Anti Cancer

Background: AKT/PKB is an important enzyme with numerous biological functions, and its overexpression is related to the carcinogenesis. AKT stimulates different signaling pathways that are downstream of activated tyrosine kinases and phosphatidylinositol 3-kinase, hence functions as an important target for anti-cancer drugs. Objective: In this review article, we have interpreted the role of AKT signaling pathways in cancer and natural inhibitory effect of Thymoquinone (TQ) in AKT and its possible mechanism. Method: We have collected the updated information and data on AKT, their role in cancer and inhibitory effect of TQ in AKT signaling pathway from google scholar, PubMed, Web of Science, Elsevier, Scopus and many more. Results: There are many drugs already developed, which can target AKT, but very few among them have passed clinical trials. TQ is a natural compound, mainly found in black cumin, which has been found to have potential anti-cancer activities. TQ targets numerous signaling pathways, including AKT, in different cancers. In fact, many studies revealed that AKT is one of the major targets of TQ. The preclinical success of TQ suggests its clinical studies on cancer. Conclusion: This review article summarizes the role of AKT in carcinogenesis, its potent inhibitors in clinical trials, and how TQ acts as an inhibitor of AKT and TQ’s future as a cancer therapeutic drug.

Potential Therapeutic Targets of Curcumin, Most Abundant Active Compound of Turmeric Spice: Role in the Management of Various Types of Cancer

2020 ◽  
Vol 15 ◽  
Author(s):  
Saleh A. Almatroodi ◽  
Mansoor Ali Syed ◽  
Arshad Husain Rahmani
Keyword(s):  
Clinical Trials ◽  
Cancer Cells ◽  
Active Compound ◽  
Molecular Mechanisms ◽  
Human Subjects ◽  
Cell Signalling ◽  
Chemopreventive Agents ◽  
Signalling Molecules ◽  
Cancer Management ◽  
Induced Apoptosis

Background:: Curcumin, an active compound of turmeric spice is one of the most-studies natural compounds and have been widely recognized as chemopreventive agents. Several molecular mechanisms have been proven, curcumin and its analogs play a role in cancer prevention through modulating various cell signaling pathways as well as inhibition of carcinogenesis process. Objective:: To study the potential role of curcumin in the management of various types of cancer through modulating cell signalling molecules based on available literature and recent patents. Methods:: A wide-ranging literature survey was performed based on Scopus, PubMed, PubMed central and Google scholar for the implication of curcumin in cancer management along with special emphasis on human clinical trials. Moreover, patents were searched through www.google.com/patents, www.freepatentsonline.com and www.freshpatents.com. Result:: Recent studies based on cancer cells have proven that curcumin have potential effects against cancer cells, prevent the growth of cancer and act as cancer therapeutic agents. Besides, curcumin exerted anticancer effects through inducing apoptosis, activating tumor suppressor genes, cell cycle arrest, inhibiting tumor angiogenesis, initiation, promotion and progression stages of tumor. It was established that co-treatment of curcumin and anti-cancer drugs could induce apoptosis and also play a significant role in the suppression of the invasion and metastasis of cancer cells. Conclusion:: Accumulating evidences suggest that curcumin has potentiality to inhibit cancer growth, induced apoptosis and modulate various cell signalling pathways molecules. Well-designed clinical trials of curcumin based on human subjects are still needed to establish the bioavailability, mechanism of action, efficacy and safe dose in the management of various cancers.

scholarly journals Mechanisms of Colorectal Cancer Prevention by Aspirin—A Literature Review and Perspective on the Role of COX-Dependent and -Independent Pathways

2020 ◽  
Vol 21 (23) ◽  
pp. 9018
Author(s):  
Ranjini Sankaranarayanan ◽  
D. Ramesh Kumar ◽  
Meric A. Altinoz ◽  
G. Jayarama Bhat
Keyword(s):  
Salicylic Acid ◽  
Cancer Prevention ◽  
Protective Actions ◽  
Direct Exposure ◽  
Anti Cancer ◽  
Chemopreventive Effect ◽  
Colorectal Cancer Prevention ◽  
Preclinical And Clinical Studies ◽  
Shed Light

Aspirin, synthesized and marketed in 1897 by Bayer, is one of the most widely used drugs in the world. It has a well-recognized role in decreasing inflammation, pain and fever, and in the prevention of thrombotic cardiovascular diseases. Its anti-inflammatory and cardio-protective actions have been well studied and occur through inhibition of cyclooxygenases (COX). Interestingly, a vast amount of epidemiological, preclinical and clinical studies have revealed aspirin as a promising chemopreventive agent, particularly against colorectal cancers (CRC); however, the primary mechanism by which it decreases the occurrences of CRC has still not been established. Numerous mechanisms have been proposed for aspirin’s chemopreventive properties among which the inhibition of COX enzymes has been widely discussed. Despite the wide attention COX-inhibition has received as the most probable mechanism of cancer prevention by aspirin, it is clear that aspirin targets many other proteins and pathways, suggesting that these extra-COX targets may also be equally important in preventing CRC. In this review, we discuss the COX-dependent and -independent pathways described in literature for aspirin’s anti-cancer effects and highlight the strengths and limitations of the proposed mechanisms. Additionally, we emphasize the potential role of the metabolites of aspirin and salicylic acid (generated in the gut through microbial biotransformation) in contributing to aspirin’s chemopreventive actions. We suggest that the preferential chemopreventive effect of aspirin against CRC may be related to direct exposure of aspirin/salicylic acid or its metabolites to the colorectal tissues. Future investigations should shed light on the role of aspirin, its metabolites and the role of the gut microbiota in cancer prevention against CRC.

Potential role of green tea extract and epigallocatechin gallate in preventing bisphenol A-induced metabolic disorders in rats: Biochemical and molecular evidence

Phytomedicine ◽  
2021 ◽  
pp. 153754
Author(s):  
Mahdieh Sadat Mohsenzadeh ◽  
Bibi Marjan Razavi ◽  
Mohsen Imenshahidi ◽  
Seyed Abbas Tabatabaee Yazdi ◽  
Seyed Ahmad Mohajeri ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Green Tea ◽  
Metabolic Disorders ◽  
Potential Role ◽  
Epigallocatechin Gallate ◽  
Green Tea Extract ◽  
Molecular Evidence ◽  
Tea Extract

Combinational Therapy Using Chemotherapeutic Agents and Dietary Bioactive Compounds

2021 ◽  
pp. 188-214
Author(s):  
Madhumitha Kedhari Sundaram ◽  
Shefina Silas ◽  
Arif Hussain
Keyword(s):  
Bioactive Compounds ◽  
Molecular Targets ◽  
Chemotherapeutic Agents ◽  
Chemopreventive Agents ◽  
Cancer Management ◽  
Combinational Therapy ◽  
Synergistic Response ◽  
Dietary Bioactive Compounds ◽  
Dietary Agents ◽  
Cell Signaling Pathways

Diet-derived phytochemicals find prominent use in traditional medicine and have been credited with lowering cancer risk significantly. Dietary agents demonstrate anticancer activity by modulating various molecular targets and cell signaling pathways. Several studies have focused on combinations of dietary bioactive compounds and conventional chemotherapeutic agents to augment their therapeutic response and mitigate the side effects of conventional chemotherapy. The observed synergistic response heralds promise for successful future chemopreventive and chemotherapeutic strategies in cancer management. Animal models and pre-clinical trials of the effective combinations must be undertaken to clearly understand the mechanism of action. This chapter catalogues recent studies that have used dietary bioactive compounds (sulforaphane, EGCG, curcumin, genistein, resveratrol, eugenol) in combination with conventional chemopreventive agents and with other phytochemicals.

scholarly journals On the Anti-Cancer Effect of Cold Atmospheric Plasma and the Possible Role of Catalase-Dependent Apoptotic Pathways

Cells ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 2330
Author(s):  
Charlotta Bengtson ◽  
Annemie Bogaerts
Keyword(s):  
Mathematical Model ◽  
Cell Death ◽  
Apoptotic Cell ◽  
Atmospheric Plasma ◽  
Cold Atmospheric Plasma ◽  
Cancer Cell Death ◽  
Anti Cancer ◽  
Apoptotic Pathways ◽  
Cell Signaling Pathways

Cold atmospheric plasma (CAP) is a promising new agent for (selective) cancer treatment, but the underlying cause of the anti-cancer effect of CAP is not well understood yet. Among different theories and observations, one theory in particular has been postulated in great detail and consists of a very complex network of reactions that are claimed to account for the anti-cancer effect of CAP. Here, the key concept is a reactivation of two specific apoptotic cell signaling pathways through catalase inactivation caused by CAP. Thus, it is postulated that the anti-cancer effect of CAP is due to its ability to inactivate catalase, either directly or indirectly. A theoretical investigation of the proposed theory, especially the role of catalase inactivation, can contribute to the understanding of the underlying cause of the anti-cancer effect of CAP. In the present study, we develop a mathematical model to analyze the proposed catalase-dependent anti-cancer effect of CAP. Our results show that a catalase-dependent reactivation of the two apoptotic pathways of interest is unlikely to contribute to the observed anti-cancer effect of CAP. Thus, we believe that other theories of the underlying cause should be considered and evaluated to gain knowledge about the principles of CAP-induced cancer cell death.

scholarly journals The Role of Histone Acetylation and the Microbiome in Phytochemical Efficacy for Cardiovascular Diseases

2020 ◽  
Vol 21 (11) ◽  
pp. 4006
Author(s):  
Levi W. Evans ◽  
Maheshi Athukorala ◽  
Kristina Martinez-Guryn ◽  
Bradley S. Ferguson
Keyword(s):  
Cardiovascular Diseases ◽  
Histone Acetylation ◽  
Fruits And Vegetables ◽  
Financial Burden ◽  
Epigallocatechin Gallate ◽  
Mechanisms Of Action ◽  
Global Changes ◽  
Treatment And Prevention ◽  
The Impact

Cardiovascular diseases (CVD) are the main cause of death worldwide and create a substantial financial burden. Emerging studies have begun to focus on epigenetic targets and re-establishing healthy gut microbes as therapeutic options for the treatment and prevention of CVD. Phytochemicals, commonly found in fruits and vegetables, have been shown to exert a protective effect against CVD, though their mechanisms of action remain incompletely understood. Of interest, phytochemicals such as curcumin, resveratrol and epigallocatechin gallate (EGCG) have been shown to regulate both histone acetylation and microbiome re-composition. The purpose of this review is to highlight the microbiome–epigenome axis as a therapeutic target for food bioactives in the prevention and/or treatment of CVD. Specifically, we will discuss studies that highlight how the three phytochemicals above alter histone acetylation leading to global changes in gene expression and CVD protection. Then, we will expand upon these phytochemicals to discuss the impact of phytochemical–microbiome–histone acetylation interaction in CVD.

scholarly journals Green Tea, A medicinal food with promising neurological benefits

2020 ◽  
Vol 18 ◽  
Author(s):  
Hossein Akbarialiabad ◽  
Mohammad Dahri Dahroud ◽  
Mohammad M. Khazaei ◽  
Saeed Razmeh ◽  
Mohammad M. Zarshenas
Keyword(s):  
Clinical Trials ◽  
Green Tea ◽  
Neurological Disorders ◽  
Mechanisms Of Action ◽  
Pharmacokinetic Studies ◽  
Effective Agent ◽  
Neuroprotective Effects ◽  
Lead Compounds ◽  
Current Review ◽  
Medicinal Food

: Neurological disorders and their sequelae, as of the widespread and critical humans complications, affect the body's nervous systems, organ functions, and behaviors. According to WHO, neurological disorders are currently predicted to affect more than one billion people globally. It is well-established that complementary medicine is one of the high accepted interventions that could have been considered for the management of neurological ailments. The current review aimed to compile a frame from all the crucial data reporting the investigation on the conspicuous intervention of green tea (made of Camellia sinensis) and related lead compounds (especially l-theanine, epigallocatechin-3-gallate, epicatechin-3-gallate, epicatechin, and epigallocatechin) for their neurological activities, mechanisms of action, and clinical properties. According to the documents, green tea exhibits antidepressant, anti-neurodegenerative (e.g., anti-Parkinson and anti-Alzheimer), as well as neuroprotective effects. Chief among them, for offering novel work, it is worth focusing on several related assessments with great attention to more extensive standardized clinical trials, and subsequently more in-depth pharmacokinetic studies to safely introduce this beneficial medicinal food as a neuro-effective agent.

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