Experimental evidence for an anti-inflammatory action of STW 5 in the lower gastrointestinal tract in vivo

2007 ◽  
Vol 45 (08) ◽  
Author(s):  
H Abdel-Aziz ◽  
W Wadie ◽  
MT Khayyal ◽  
SN Okpanyi ◽  
O Kelber ◽  
...  
2019 ◽  
Vol 25 (37) ◽  
pp. 4946-4967 ◽  
Author(s):  
Anna K. Kiss ◽  
Jakub P. Piwowarski

The popularity of food products and medicinal plant materials containing hydrolysable tannins (HT) is nowadays rapidly increasing. Among various health effects attributable to the products of plant origin rich in gallotannins and/or ellagitannins the most often underlined is the beneficial influence on diseases possessing inflammatory background. Results of clinical, interventional and animal in vivo studies clearly indicate the antiinflammatory potential of HT-containing products, as well as pure ellagitannins and gallotannins. In recent years a great emphasis has been put on the consideration of metabolism and bioavailability of natural products during examination of their biological effects. Conducted in vivo and in vitro studies of polyphenols metabolism put a new light on this issue and indicate the gut microbiota to play a crucial role in the health effects following their oral administration. The aim of the review is to summarize the knowledge about HT-containing products’ phytochemistry and their anti-inflammatory effects together with discussion of the data about observed biological activities with regards to the current concepts on the HTs’ bioavailability and metabolism. Orally administered HT-containing products due to the limited bioavailability of ellagitannins and gallotannins can influence immune response at the level of gastrointestinal tract as well as express modulating effects on the gut microbiota composition. However, due to the chemical changes being a result of their transit through gastrointestinal tract, comprising of hydrolysis and gut microbiota metabolism, the activity of produced metabolites has to be taken into consideration. Studies regarding biological effects of the HTs’ metabolites, in particular urolithins, indicate their strong and structure-dependent anti-inflammatory activities, being observed at the concentrations, which fit the range of their established bioavailability. The impact of HTs on inflammatory processes has been well established on various in vivo and in vitro models, while influence of microbiota metabolites on silencing the immune response gives a new perspective on understanding anti-inflammatory effects attributed to HT containing products, especially their postulated effectiveness in inflammatory bowel diseases (IBD) and cardiovascular diseases.


2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Deok-Sang Hwang ◽  
Hyo Geun Kim ◽  
Jun-Bock Jang ◽  
Myung Sook Oh

Dangguijakyak-san (DJS), a famous traditional Korean multiherbal medicine, has been used to treat gynecological and neuro-associated disease. Recent studies demonstrated that DJS has multiple bioactivities including neuroprotection. In the present study, we were to investigate the effect of DJS and its mechanism in anin vitroandin vivomodel of Parkinson’s disease (PD). In primary mesencephalic culture system, DJS attenuated the dopaminergic cell damage induced by 1-methyl-4-phenylpyridine toxicity, and it inhibited production of inflammatory factors such as tumor necrosis factorα(TNF-α), nitric oxide (NO), and activation of microglial cells. Then, we confirmed the effect of DJS in a mouse PD model induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). In the pole test, DJS at 50 mg/kg/day for 5 days showed increase of motor activity showing shortened time to turn and locomotor activity compared with the MPTP only treated mice. In addition, DJS significantly protected nigrostriatal dopaminergic neuron from MPTP stress. Moreover, DJS showed inhibition of gliosis in the substantia nigra pars compacta. These results have therapeutic implications for DJS in the treatment of PD via anti-inflammatory effects.


2007 ◽  
Vol 59 (1) ◽  
pp. 123-130 ◽  
Author(s):  
Mu Hong Lee ◽  
Jeong Min Lee ◽  
Sung Hoon Jun ◽  
Chul Gyu Ha ◽  
Seung-Ha Lee ◽  
...  

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Elisa Colombo ◽  
Enrico Sangiovanni ◽  
Mario Dell'Agli

Several biological activities of pomegranate have been widely described in the literature, but the anti-inflammatory effect in the gastrointestinal tract has not been reviewed till now. The aim of the present paper is to summarize the evidence for or against the efficacy of pomegranate for coping with inflammatory conditions of the gastro-intestinal tract. The paper has been organized in three parts: (1) the first one is devoted to the modifications of pomegranate active compounds in the gastro-intestinal tract; (2) the second one considering the literature regarding the anti-inflammatory effect of pomegranate at gastric level; (3) the third part considers the anti-inflammatory effect of pomegranate in the gut.In vivostudies performed on the whole fruit or juice, peel, and flowers demonstrate antiulcer effect in a variety of animal models. Ellagic acid was the main responsible for this effect, although other individual ellagitannins could contribute to the biological activity of the mixture. Different preparations of pomegranate, including extracts from peels, flowers, seeds, and juice, show a significant anti-inflammatory activity in the gut. No clinical studies have been found, thus suggesting that future clinical studies are necessary to clarify the beneficial effects of pomegranate in the gastrointestinal tract.


2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Olumayokun A. Olajide ◽  
Mutalib A. Aderogba ◽  
Uchechukwu P. Okorji ◽  
Bernd L. Fiebich

Bridelia ferrugineais commonly used in traditional African medicine (TAM) for treating various inflammatory conditions. Extracts from the plant have been shown to exhibit anti-inflammatory property in a number ofin vivomodels. In this study the influence ofB. ferruginea(BFE) on the production of PGE2, nitrite, and proinflammatory cytokines from LPS-stimulated BV-2 microglia was investigated. The effects of BFE on cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) protein expressions were evaluated in LPS-activated rat primary microglia. The roles of NF-κB and MAPK signalling in the actions of BFE were also investigated. BFE (25–200 μg) inhibited the production of PGE2, nitrite, tumour necrosis factor-α(TNFα), and interleukin-6 (IL-6) as well as COX-2 and iNOS protein expressions in LPS-activated microglial cells. Further studies to elucidate the mechanism of anti-inflammatory action of BFE revealed interference with nuclear translocation of NF-κBp65 through mechanisms involving inhibition of IκB degradation. BFE prevented phosphorylation of p38, but not p42/44 or JNK MAPK. It is suggested thatBridelia ferrugineaproduces anti-inflammatory action through mechanisms involving p38 MAPK and NF-κB signalling.


2016 ◽  
Vol 46 ◽  
pp. 15-15
Author(s):  
Michiko Mori ◽  
Prajakta Jogdand ◽  
Caroline Sanden ◽  
Jimmie Jönsson ◽  
Ravi Krishnan ◽  
...  

2018 ◽  
Vol 29 (6) ◽  
pp. 659-669 ◽  
Author(s):  
Newman Osafo ◽  
David D. Obiri ◽  
Aaron O. Antwi ◽  
Oduro K. Yeboah

AbstractBackgroundOur earlier studies had given evidence of the traditional application ofXylopia aethiopicain the management of inflammation. The principal constituent obtained from its bio-fractionation is xylopic acid. It is a crystalline diterpene that belongs to the class of kauranes. This work sets out to investigate the anti-inflammatory potential of the xylopic acid isolated from the dried fruit ofX. aethiopica.MethodsA preliminary anti-inflammatory study, using the protein denaturation model, andin vivoanti-inflammatory assay were employed in the investigation of acute inflammation. The modulation of the effect of the pro-inflammatory markers histamine, serotonin, bradykinin, and prostaglandin E2by xylopic acid was investigated byin vivomice paw oedema models.ResultsXylopic acid showed a concentration-dependent inhibition of albumen denaturation with an IC50of 15.55 μg mL−1. Xylopic acid (10, 30, 100 mg kg−1) inhibited the maximal oedema and the average paw thickness (oedema) over the period of each study considerably for all phlogistic agents employed (i.e. carrageenan, histamine, serotonin, bradykinin, and prostaglandin E2) in the inflammation induction for both prophylactic and therapeutic protocols.ConclusionThis study establishes that xylopic acid has anti-inflammatory action in acute inflammation.


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