Protective and therapeutic effects of the flavonoid “pinocembrin” in indomethacin-induced acute gastric ulcer in rats: impact of anti-oxidant, anti-inflammatory, and anti-apoptotic mechanisms

Author(s):  
Aya A. El-Demerdash ◽  
Esther T. Menze ◽  
Ahmed Esmat ◽  
Mariane G. Tadros ◽  
Doaa A. Elsherbiny
2019 ◽  
Vol 20 (23) ◽  
pp. 6084 ◽  
Author(s):  
Mailin Gan ◽  
Linyuan Shen ◽  
Yuan Fan ◽  
Ya Tan ◽  
Ting Zheng ◽  
...  

Effective, targeted therapy for chronic liver disease nonalcoholic steatohepatitis (NASH) is imminent. MicroRNAs (miRNAs) are a potential therapeutic target, and natural products that regulate miRNA expression may be a safe and effective treatment strategy for liver disease. Here, we investigated the functional role of miR-451 and the therapeutic effects of genistein in the NASH mouse model. MiR-451 was downregulated in various types of liver inflammation, and subsequent experiments showed that miR-451 regulates liver inflammation via IL1β. Genistein is a phytoestrogen with anti-inflammatory and anti-oxidant effects. Interestingly, we found that the anti-inflammatory effects of genistein were related to miR-451 and was partially antagonized by the miR-451 inhibitor. MiR-451 overexpression or genistein treatment inhibited IL1β expression and inflammation. Taken together, this study shows that miR-451 has a protective effect on hepatic inflammation, and genistein can be used as a natural promoter of miR-451 to ameliorate NASH.


2013 ◽  
Vol 45 (2) ◽  
pp. 195-203 ◽  
Author(s):  
Mehmet Ziya Yilmaz ◽  
Aygul Guzel ◽  
Aysun Caglar Torun ◽  
Ali Okuyucu ◽  
Osman Salis ◽  
...  

2016 ◽  
Vol 7 (1) ◽  
pp. 398-408 ◽  
Author(s):  
Paulrayer Antonisamy ◽  
Mariadhas Valan Arasu ◽  
Muniappan Dhanasekaran ◽  
Ki Choon Choi ◽  
Adithan Aravinthan ◽  
...  

The gastroprotective activity of trigonelline against indomethacin-induced ulcer and the role of anti-oxidant, anti-inflammatory and anti-apoptotic mechanisms have been explored.


Author(s):  
Sineenat Kuadkaew ◽  
Suwipa Ungphaiboon ◽  
Narubodee Phdoongsombut ◽  
Sireewan Kaewsuwan ◽  
Sirima Mahattanadul

Background: Curcumin is claimed as a potent protectant against gastric ulcer (GU) induced by strong necrotizing agents including NSAIDs through its antioxidant, anti-inflammatory and gastroprotective activities. However, it was found to exert opposite effects to either delay ulcer healing or exacerbate ulcer inflammation through some curative mechanisms differently modified by curcumin dosage. Its ability in inhibiting the expression of COX-2 may also delay the healing of NSAIDs-induced GU. Recently, a topical chitosan-curcumin solution has been found to be a safe and potential alternative agent in treating oral ulcer. Therefore, an oral chitosan-curcumin mixture was developed and determined for its efficacy in treating NSAIDs-induced GU in rat. Methods: A chitosan (150 mg)-curcumin (20 mg) mixture with optimal gastric pH was developed. Indomethacin (30 mg/kg) was given orally to the rat and test preparations were administered orally at 5 h later and then every 24 h for two consecutive days. The sum of all gastric ulcerated areas (mm2) for each stomach was used as ulcer index. Gastric pro-inflammatory mediators and cytoprotective factors were determined. Results: An oral administration of a chitosan-curcumin mixture exerted a superior efficacy than curcumin, chitosan or lansoprazole (a standard antiulcer agent) in healing indomethacin-induced GU. It was revealed that the mixture exhibited the highest anti-oxidant, anti-inflammatory and gastric mucus producing activities including the high potency in down-regulating pro-inflammatory COX-2 and iNOS expression but up-regulating cytoprotective COX-1, nNOS and eNOS expression. Conclusion: The present findings indicated the benefit of a chitosan-curcumin mixture as a potential alternative agent in treating NSAIDs-induced gastric ulcer.


2019 ◽  
Author(s):  
Chem Int

Coumarin and its derivatives are widely spread in nature. Coumarin goes to agroup as benzopyrones, which consists of a benzene ring connected to a pyronemoiety. Coumarins displayed a broad range of pharmacologically useful profile.Coumarins are considered as a promising group of bioactive compounds thatexhibited a wide range of biological activities like anti-microbial, anti-viral,antiparasitic, anti-helmintic, analgesic, anti-inflammatory, anti-diabetic, anticancer,anti-oxidant, anti-proliferative, anti-convulsant, and antihypertensiveactivities etc. The coumarin compounds have immense interest due to theirdiverse pharmacological properties. In particular, these biological activities makecoumarin compounds more attractive and testing as novel therapeuticcompounds.


2019 ◽  
Vol 26 (24) ◽  
pp. 4506-4536 ◽  
Author(s):  
Iris E. Allijn ◽  
René P. Brinkhuis ◽  
Gert Storm ◽  
Raymond M. Schiffelers

Traditionally, natural medicines have been administered as plant extracts, which are composed of a mixture of molecules. The individual molecular species in this mixture may or may not contribute to the overall medicinal effects and some may even oppose the beneficial activity of others. To better control therapeutic effects, studies that characterized specific molecules and describe their individual activity that have been performed over the past decades. These studies appear to underline that natural products are particularly effective as antioxidants and anti-inflammatory agents. In this systematic review we aimed to identify potent anti-inflammatory natural products and relate their efficacy to their chemical structure and physicochemical properties. To identify these compounds, we performed a comprehensive literature search to find those studies, in which a dose-response description and a positive control reference compound was used to benchmark the observed activity. Of the analyzed papers, 7% of initially selected studies met these requirements and were subjected to further analysis. This analysis revealed that most selected natural products indeed appeared to possess anti-inflammatory activities, in particular anti-oxidative properties. In addition, 14% of the natural products outperformed the remaining natural products in all tested assays and are attractive candidates as new anti-inflammatory agents.


2020 ◽  
Vol 28 (2) ◽  
pp. 360-376 ◽  
Author(s):  
Atefeh Amiri ◽  
Maryam Mahjoubin-Tehran ◽  
Zatollah Asemi ◽  
Alimohammad Shafiee ◽  
Sarah Hajighadimi ◽  
...  

: Cancer and inflammatory disorders are two important public health issues worldwide with significant socio.economic impacts. Despite several efforts, the current therapeutic platforms are associated with severe limitations. Therefore, developing new therapeutic strategies for the treatment of these diseases is a top priority. Besides current therapies, the utilization of natural compounds has emerged as a new horizon for the treatment of cancer and inflammatory disorders as well. Such natural compounds could be used either alone or in combination with the standard cancer therapeutic modalities such as chemotherapy, radiotherapy, and immunotherapy. Resveratrol is a polyphenolic compound that is found in grapes as well as other foods. It has been found that this medicinal agent displays a wide pharmacological spectrum, including anti-cancer, anti-inflammatory, anti-microbial, and antioxidant activities. Recently, clinical and pre-clinical studies have highlighted the anti-cancer and anti-inflammatory effects of resveratrol. Increasing evidence revealed that resveratrol exerts its therapeutic effects by targeting various cellular and molecular mechanisms. Among cellular and molecular targets that are modulated by resveratrol, microRNAs (miRNAs) have appeared as key targets. MiRNAs are short non-coding RNAs that act as epigenetic regulators. These molecules are involved in many processes that are involved in the initiation and progression of cancer and inflammatory disorders. Herein, we summarized various miRNAs that are directly/indirectly influenced by resveratrol in cancer and inflammatory disorders.


2019 ◽  
Vol 19 (15) ◽  
pp. 1219-1254 ◽  
Author(s):  
Abhinav Prasoon Mishra ◽  
Ankit Bajpai ◽  
Awani Kumar Rai

: Nowadays, heterocyclic compounds act as a scaffold and are the backbone of medicinal chemistry. Among all of the heterocyclic scaffolds, 1,4-Dihydropyridine (1,4-DHP) is one of the most important heterocyclic rings that possess prominent therapeutic effects in a very versatile manner and plays an important role in synthetic, medicinal, and bioorganic chemistry. The main aim of the study is to review and encompass relevant studies related to 1,4-DHP and excellent therapeutic benefits of its derivatives. An extensive review of Pubmed-Medline, Embase and Lancet’s published articles was done to find all relevant studies on the activity of 1,4-DHP and its derivatives. 1,4-DHP is a potent Voltage-Gated Calcium Channel (VGCC) antagonist derivative which acts as an anti-hypertensive, anti- anginal, anti-tumor, anti-inflammatory, anti-tubercular, anti-cancer, anti-hyperplasia, anti-mutagenic, anti-dyslipidemic, and anti-ulcer agent. From the inferences of the study, it can be concluded that the basic nucleus, 1,4-DHP which is a voltage-gated calcium ion channel blocker, acts as a base for its derivatives that possess different important therapeutic effects. There is a need of further research of this basic nucleus as it is a multifunctional moiety, on which addition of different groups can yield a better drug for its other activities such as anti-convulsant, anti-oxidant, anti-mutagenic, and anti-microbial. This review would be significant for further researches in the development of several kinds of drugs by representing successful matrix for the medicinal agents.


Author(s):  
Mohamad Reza Nikouei Moghaddam ◽  
Monireh Movahedi ◽  
Maryam Bananej ◽  
Soheil Najafi ◽  
Nahid Beladi Moghadam ◽  
...  

Background: Multiple sclerosis is an autoimmune chronic inflammatory disease of the central nervous system that can lead to some serious disabilities. Despite using various immunomodulatory and anti-inflammatory drugs that have therapeutic effects, they cannot reduce its progression completely, and have some unwanted side effects too. The immunomodulatory and anti-inflammatory effects of the β-D-Mannuronic acid [M2000] have been proven in several surveys, and the present research was designed to determine its toxicity and therapeutic effects in MS patients. Methods: This study was performed on 15 MS patients who took 25 mg/kg/day the oral form of the β-D-Mannuronic acid for six months, and 15 healthy people as a control group. Serum levels of Urea, Creatinine, GGT, Vitamin D3, Uric acid, and Anti-Phospholipids were compared to evaluate the therapeutic and possible toxic effects of this drug after this period. Results: Non- toxic effects through the study of Urea, Creatinine, GGT, and non-significant changes in Uric acid and AntiPhospholipids levels, besides a significant rise in Vitamin, D3 levels in the M2000 treated cases were found. Conclusions: Our results suggested that β-D-Mannuronic acid is a safe drug and has no toxicity when administered orally and also has some therapeutic effects in MS patients.


2020 ◽  
Vol 18 ◽  
Author(s):  
Gordana Joksic ◽  
Djordje Radak ◽  
Emina Sudar-Milovanovic ◽  
Milan Obradovic ◽  
Jelena Radovanovic ◽  
...  

Background: Gentiana lutea (GL), commonly known as yellow gentian, bitter root, and bitterwort, belongs to family Gentianaceae. GL belongs to genus Gentiana, which is a rich natural source of iridoids, secoiridoids, xantones, flavonoids, triterpenoids, and carbohydrates. Medicinal plants from Gentiana species have anti-oxidant, anti-inflammatory, anti-mitogenic, anti-proliferative, and lipid-lowering effects, as well as a cardioprotective, hypotensive, vasodilator and anti-platelet activities. Objective: We reviewed the recent literature related to the effects of Gentiana species, and their active components on vascular diseases. Methods: Data used for this review were obtained by searching the electronic database [PUBMED/MEDLINE 1973 - February 2020]. The primary data search terms of interest were: Gentiana lutea, Gentienacea family, phytochemistry, vascular diseases, treatment of vascular diseases, anti-oxidant, anti-inflammatory, anti-atherogenic. Conclusion: Gentiana species and their constituents affect many different factors related to vascular disease development and progression. Therefore, Gentiana-based therapeutics represent potentially useful drugs for the management of vascular diseases.


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