Experimental evaluation of anti-inflammatory effect of ethanolic extract of Vanilla planifolia seeds in Wistar rats

Background: Inflammation is a protective response of the body to the harmful stimuli. Inflammation can be either acute or chronic, always associated pain, redness and loss of function. Vanilla planifolia (VP) is the aromatic plant, as per literature, it has anti-inflammatory activity, which has not been tested as per modern medicinal parameters. Non-steroidal anti-inflammatory drugs are commonly used for the treatment but have many adverse effects such as gastritis, hepatitis etc. Therefore, there is always a search for new safe drug. Aim and Objectives: The aim of the study is to evaluate the anti-inflammatory activity of VP seeds in acute and chronic animal model of inflammation. Materials and Methods: Rats weighing 150–200 g of either sex were included in the study. Acute Anti-inflammatory activity tested with carrageenan-induced paw edema and chronic with cotton pellet-induced granuloma model. Animals were divided into five groups – Gr-I Control, Gr-II Vehicle control, Gr-III Diclofenac sodium, Gr-IV (VPLD), Gr-V (VPHD). Drug treatment was given 1 h before carrageenan injection. Paw volume measured at different time interval with plethysmometer. In chronic model, drug treatment was given for 7 days after pellet implantation. On 8th day, pellets removed and dried in oven. Weight of wet and dry pellets from all the groups compared with vehicle control. Data obtained was analyzed with Graph pad prism 6. Results: Reduction in paw volume started in all drug treated groups after 1 h of treatment. Paw volume was significantly reduced (P < 0.001) in group III, IV & V in 5 h. reached to near normal. In chronic model, VPLD showed decrease in wet pellet (P < 0.01) and dry pellet weight (P < 0.05) significantly. VPHD was more effective in reducing wet pellet (P < 0.001) and dry Pellet weight (P < 0.01). Similar results were seen on the left side. Conclusion: VP seed extract showed promising anti-inflammatory effect in both models of inflammation.

Phytochemical Profiling, Free-Radical Scavenging And Anti-Inflammatory Activities Of Meliosma Simplicifolia (L.)

Objective: In the current research, to determine the stem extract of Meliosma simplicifolia (L.) for total phenol, tannin, total flavonoid, antioxidant activity, anti-inflammatory and identify the phytoconstituents utilizing GC-MS and FT-IR. Methods: The ability of the plant extract to act as hydrogen/electrons donor or scavenger of radicals was determined by in vitro antioxidant assays using 2,2-diphenyl-2-picryl-hydrazyl free radical (DPPH) scavenging, reducing power assay, superoxide radical (O2•) scavenging activity. The anti-inflammatory activity was evaluated using carrageenan and formalin-induced paw edema models using Wistar albino rats. The GC-MS and FT-IR analysis of the methanolic stem extract of M. simplicifolia was revealed the presence of phytochemicals. Results: Quantitative studies of estimated phenol, flavonoid and tannin, as for the methanol extract of stem showed the highest content of phenolic compounds (39.83±3.62GAE mg/100). Antioxidant activities were concluded the estimation M. simplicifolia stem for as followed the studies. In stem the methanol extract showed the highest DPPH scavenging activity (124.3µg/ml). The anti-inflammatory activity has shown in high doses of methanolic extract 250 mg/kg of significant value (p<0.05) inhibition of paw edema, on 6th hour, respectively. The FT-IR analysis has confirmed their characteristic peak values and functional groups. Conclusion: M. simplicifolia has an effective of anti-inflammatory activity and constitutes a potential source for the development of new treatments.

Study on anti-inflammation mechanism of Radix et Rhizome Sophorae Tonkinensisin rat based on profile of pharmacokinetic parameters / 中国药理学通报

Aim To study the anti-inflammation effect of Radix et Rhizome Sophorae Tonkinensis (short for " RRST") in rat paw edema induced by carrageenan based on pharmacokinetic parameters and its mechanism. Methods Male SD rats were divided into four groups: control group, hydrocortisone group(40 mg · kg-1), water extract powder of RRST high-dose group (0. 6 g · kg-1) and low-dose group (0.3 g · kg-1) (short for "RRST-H" and "RRST-L"). The rat paw volume was measured before and 0. 5, 1,2 and 3 h after model establishment, and the contents of TNF-α, IL-1β and IL-6 in the inflammatory tissues were tested after the last measurement of paw volume, and plasma was collected from the posterior orbital venous plexus to explore the profile pharmacokinetic parameters of matrine and oxymatrine. Results Compared with control group, the swelling rate significantly decreased in hydrocortisone group after model establishment (P < 0. 01), and the swelling rate significantly decreased as the same points as hydrocortisone group in RRST-treated group (P <0. 05). There was dose-dependent relationship of RRST total exposure in plasma, which proportionally increased with the dose increasing. The AUC value of matrine was about twice that of the lowdose group, which was consistent with the strongest anti-inflammation point. The content of inflammatory factors in the inflammatory tissues were markedly downregulated in RRST-treated groups in a dose-dependent manner(P < 0. 01). Conclusions RRST shows antiinflammation effect in a dose-dependent manner, which is positively related to the total exposure of matrine in plasma, and the anti-inflammatory mechanism is related to the inhibition of the expression of inflammatory factors.

Mucus from different fish species alleviates carrageenan-induced inflammatory paw edema in rats

Objective: To determine the anti-inflammatory effects of mucus obtained from different fish species on the carrageenan-induced acute paw edema in rats. Methods: Forty-two rats were randomly divided into seven groups. Acute paw edema was induced by 0.1 mL of 1％ carrageenan, and a single dose of diclofenac and lyophilized mucus (25 mg/kg) of rainbow trout, brook trout, European sea bass, and gilthead sea bream were administered to rats through gastric gavage 1 h before carrageenan treatment. Rat paws were measured before and 1-4 h after carrageenan treatment. The mRNA expressions of cytokines (TNF-α, IL-1β, IL-6, IL-10, and TGF-β), antioxidant markers (catalase and superoxide dismutase), and COX-2 were investigated using quantitative polymerase chain reaction. The histopathological changes were evaluated by hematoxylin and eosin staining. Results: The inhibition percentage of carrageenan-induced paw edema by different fish mucus ranged from 52.46％ to 74.86％ at 4 h. Histopathological evaluation showed that all fish mucus diminished carrageenan-induced edema and inflammatory cell infiltration. The upregulation of IL-1β mRNA induced by carrageenan was decreased by the mucus of rainbow trout and gilthead sea bream while an increase in the expression of IL-6 mRNA was reduced by the mucus of rainbow trout, brook trout, and gilthead sea bream. In addition, the mRNA expression of superoxide dismutase was higher in the rainbow trout mucus group than the carrageenan group. Conclusions: Mucus obtained from different fish species may have anti-inflammatory effects.

Mucus from different fish species alleviates carrageenan-induced inflammatory paw edema in rats

Objective: To determine the anti-inflammatory effects of mucus obtained from different fish species on the carrageenan-induced acute paw edema in rats. Methods: Forty-two rats were randomly divided into seven groups. Acute paw edema was induced by 0.1 mL of 1% carrageenan, and a single dose of diclofenac and lyophilized mucus (25 mg/kg) of rainbow trout, brook trout, European sea bass, and gilthead sea bream were administered to rats through gastric gavage 1 h before carrageenan treatment. Rat paws were measured before and 1-4 h after carrageenan treatment. The mRNA expressions of cytokines (TNF-α, IL-1β, IL-6, IL-10, and TGF-β), antioxidant markers (catalase and superoxide dismutase), and COX-2 were investigated using quantitative polymerase chain reaction. The histopathological changes were evaluated by hematoxylin and eosin staining. Results: The inhibition percentage of carrageenan-induced paw edema by different fish mucus ranged from 52.46% to 74.86% at 4 h. Histopathological evaluation showed that all fish mucus diminished carrageenan-induced edema and inflammatory cell infiltration. The upregulation of IL-1β mRNA induced by carrageenan was decreased by the mucus of rainbow trout and gilthead sea bream while an increase in the expression of IL-6 mRNA was reduced by the mucus of rainbow trout, brook trout, and gilthead sea bream. In addition, the mRNA expression of superoxide dismutase was higher in the rainbow trout mucus group than the carrageenan group. Conclusions: Mucus obtained from different fish species may have anti-inflammatory effects.

In vivo methods for the evaluation of anti-inflammatory and antinoceptive potential / Métodos in vivo para avaliação do potencial anti-inflamatório e antinociceptivo

ABSTRACT BACKGROUND AND OBJECTIVES: The constant search for bioactive compounds with anti-inflammatory and antinociceptive activities are of interest to research centers. For the characterization of these activities, trials on guinea pigs are necessary. Therefore, the purpose of this study was to demonstrate some methods to evaluate the anti-inflammatory and antinociceptive potential of natural products. CONTENTS: A stimulus is required to evaluate these activities, and the induction of inflammatory or nociceptive process can be by chemical inducers like formaldehyde, carrageenan, among others, or electronic equipment such as the hot plate. For all assays, the baseline and post-dose measurement of the studied compound is always compared with a control group. The planning of the experiment, as well as its conduct in accordance with well-established protocols, are important tools in the success of the work. The tests presented evaluated the antinociceptive and anti-inflammatory activity as well as the mechanisms involved. CONCLUSION: It was possible to evaluate that the tests present in the literature today meet the researcher's need for the elucidation of the anti-inflammatory and antinociceptive activity of new compounds.

RESUMO JUSTIFICATIVA E OBJETIVOS: A busca constante por compostos bioativos com atividade anti-inflamatória e antinociceptiva são de interesse dos centros de pesquisas. Para a caracterização dessas atividades são necessários ensaios em cobaias. Frente a isso, o objetivo deste estudo foi demonstrar alguns métodos para a avaliação do potencial anti-inflamatório e antinociceptivo de produtos naturais. CONTEÚDO: Para a avaliação dessas atividades é necessário um estímulo, sendo que a indução de processo inflamatório ou nociceptivo pode ser por indutores químicos como formol, carragenina, entre outros, ou ainda, equipamentos eletrônicos como placa quente. Para todos os ensaios, sempre é realizada a mensuração basal e posterior à administração do composto que está sendo estudado em comparação com um grupo controle. O planejamento do experimento, assim como toda a condução conforme protocolos já bem ilustrados, são ferramentas importantes no êxito do trabalho. Os testes apresentados avaliaram atividade antinociceptiva e anti-inflamatória assim como mecanismos envolvidos. CONCLUSÃO: Foi possível avaliar que os testes presentes na literatura hoje, atendem a necessidade do pesquisador na elucidação da atividade anti-inflamatória e atividade antinociceptiva de novos compostos.

Evaluation of anti-inflammatory activity of ethanolic extract of Gmelina arborea in experimental acute and sub-acute inflammatory models in wistar rats

Background: Inflammation is a complex reaction to various injurious agents such as infections, trauma, foreign bodies, tissue necrosis, physical and chemical agents, that consists of vascular responses, migration and activation of leukocytes and systemic reactions. Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) are currently the most commonly prescribed drugs for treating pain and inflammation. The traditional NSAIDs usually cause various adverse effects on long term use. Gmelina arborea Linn (Gambhari) belongs to family Verbenaceae. The roots, leaves, flowers, fruits and bark are used for treating different ailments as anthelmintic, analgesic, anti-pyretic, antidiabetic, antimicrobial, diuretic and other common disorders.Methods: The study was carried out by using inflammatory models in wistar rats. The anti-inflammatory activity of G. arborea was compared with standard drug aspirin. The study parameters for acute inflammation was assessment of reduction in inflammation & the percentage inhibition of the paw edema. The parameter for the sub-acute inflammation was percentage inhibition of the dry granuloma weight.Results: The low and high dose of G. arborea root extract significantly showed the anti-inflammatory activity when compared to control group. The high dose of G. arborea extract showed comparable results in parameters like reducing inflammation, percentage inhibition of paw edema and dry granuloma weight in acute carrageenan paw edema and sub-acute inflammation cotton pellet granuloma models with standard aspirin treated group.Conclusions: Since G. arborea root extract was having all the qualities required for anti-inflammatory drug. However, no clear inference can be drawn at this stage and hence we consider the work for further extensive research.

Comparative evaluation of various analgesic drugs in Wistar rats used as a teaching tool to teach animal experiments to post graduate MD Pharmacology students

Background: Postgraduates when join Pharmacology department, they don’t have much idea about guidelines and methods to do animal experiments. This study was designed to sensitize postgraduate students to animal experiments by evaluating the anti-inflammatory effects and the efficacy of diclofenac, tramadol and etoricoxib in reducing paw edema in wistar rats.Methods: The wistar rats of 225-250gram were divided into four groups (n=10 each). In all the groups the paw edema on right paw was created using 0.1ml of 1% formalin subcutaneously. Group 1 rats (control), group 2 were given diclofenac, group 3 were given tramadol and group 4 were given etoricoxib orally. The parameters assessed were water displacement in plethysmography after 2, 4, 24, 48 hours of giving the drug. The circumference of edematous paws after 4 hours, licking of paw was observed over 30minutes of giving the drug and was compared. Pre and post study feedback were obtained from the students by using a preformed questionnaire to assess the knowledge gained by the students.Results: The test showed that all the drugs were effective in reducing inflammation, circumference of edema and the licking duration significantly (p<0.05). The post study answering of questions by postgraduate was 100% in comparison to pre-study answering which was 33%.Conclusions: A short animal study conducted as a teaching tool to postgraduate students was able to teach the guidelines of animal experiments and handling of animals effectively.

Anti-inflammatory activity and chemical analysis of extracts from Trifolium riograndense

Abstract Aiming to investigate new therapeutic agents with fewer side effects, the number of studies about natural products has increased. Phenolic compounds comprise a well-studied class of abundant plant-derived compounds, whose anti-inflammatory activity has been described. Isoflavones are phenolic compounds that occur mainly in the Leguminosae family, and can be found in many species, such as Trifolium riograndense Burkart, Leguminosae (clover). In this study an HPLC method was used to determine and quantify four isoflavones (genistein, daidzein, formononetin, and biochanin A) in hydrolyzed leaf, flower, stolon, and root extracts of T. riograndense. In vivo anti-inflammatory activity was investigated using the rat paw edema method and in vitro chemotaxis model with a dry extract from the leaves, which had the highest amount of isoflavones. The major isoflavone found in all parts of the plant was formononetin. The chemotaxis assay revealed that the different concentrations (0.2-50 µg/ml) of the dry extract significantly inhibited neutrophil migration in a concentration-dependent manner (more than 90%). In the rat paw edema test, oral administration of clover extract 100 mg/kg was able to significantly inhibit the edema formation induced by carrageenan. In conclusion, chemical analyses showed that Trifolium riograndense is a plant rich in isoflavones and a new interesting option as isoflavone source. The results of the biological tests taken together show that the extract of T. riograndense has anti-inflammatory effect in rodents.

Estudo comparativo da ação anti-inflamatória do óleo-resina da Copaifera reticulata em modelos farmacológicos experimentais em camundongos / Comparative study of oleoresin of copaiba species Copaifera reticulata as antiinflammatory in experimental models in mice

Na Região Amazônica o uso do óleo das árvores copaibeiras é tão extenso, que a copaíba se destaca como a planta medicinal mais utilizada e conhecida pela população amazônica. Existem diversas indicações para a utilização do óleo-resina de copaíba com pouco respaldo científico. Avaliar a ação do óleo-resina de copaíba da espécie Copaifera reticulata como antiinflamatório em modelos experimentais de reação inflamatória aguda foi o objetivo desta pesquisa. Para isso, foram utilizados 4 grupos de 7 camundongos da linhagem Swiss Webster, que receberam tratamento veiculado com o ultrassom, e o óleo-resina extraído de árvore da espécie Copaífera reticulata. O modelo de inflamação aguda bolsa de ar (air pouch) induzida por carragenina foi utilizado para avaliar o efeito anti-inflamatório do óleo-resina de copaíba (in natura). As análises ocorreram no exsudato que foi avaliado quanto ao conteúdo total de proteínas, número total de leucócitos e análise celular. Para análise estatística foi eleito o teste de Kruskal-Wallis com nível de significância alfa = 0,05. As células totais e as mononucleares não mostraram diferenças estatisticamente significantes entre si nem em relação ao grupo copaíba. A comparação do nível de proteínas apresentou diferença significativa (p-valor < 0,01) entre o grupo controle (0,2608 ± 0,1557) e o grupo tratado por carragenina (0,597 ± 0,152). Foi observada diferença real (1,4 neutrófilos) entre os grupos carragenina (2,0079 ± 1,5231) e o grupo copaíba (0,6063 ± 0,32). Conclui-se que a atividade anti-inflamatória do óleo-resina é potencialmente importante como fonte de princípios ativos e que o ultrassom proporcionou a facilitação e aceleração da penetração transcutânea do óleo-resina de copaíba, favorecendo o seu uso tópico. (AU)

In the Amazon region the use of oil of copaibeira trees is so extensive that the copal stands out as the most known medicinal plant used by Amazonian population. There are several indications for the use oleoresin of copaiba with little scientific backing. The aim of this study was to evaluate the effects of oleoresin of copaiba species Copaifera reticulata as antiinflammatory in experimental models of acute inflammatory reaction. For this, we used 28 mice of Swiss Webster strain, who received treatment with ultrasound aired, and oleoresin extracted from Copaifera reticulata. The model of acute inflammation air pouch induced by carrageenan was used to evaluate the anti-inflammatory effect of oleoresin of copaiba (fresh). The analysis occurred in the exudate analyzed for total protein content, total number of leukocytes and cell analysis. For statistical analysis was elected the Kruskal-Wallis test with significance level alpha = 0.05. Total cells and mononuclear cells showed no statistically significant differences among themselves or in relation to the group copal. The comparison of protein level showed a significant difference (p-value < 0.01 *), saline was lower (0.2608 ± 0.1557) than carrageenan (0.597 ± 0.152). Real difference was observed (1.4 neutrophils) between groups carrageenan (2.0079 ± 1.5231) and the group copaíba (0.6063 ± 0:32). We concluded that the antiinflammatory activity of the oleoresin is potentially important as a source of active ingredients and provided that ultrasound facilitation and acceleration of transcutaneous penetration of the copaiba oil, favoring its topical use. (AU)

Antinociceptive and Anti-inflammatory Effects of Combined Administration of a-tocopherol and Diclofenac.

Background: Nonsteroidal anti-inflammatory drugs such as diclofenac are used for relief of pain and inflammation, but frequently cause gastrointestinal complications. This study aimed to explore that combination of diclofenac and α-tocopherol (αT) are better analgesic as well as anti-inflammatory agent than that of diclofenac alone. Objective: To assess the effects of combination of diclofenac with α-tocopherol on pain and inflammation. Methods: This prospective experimental study was conducted in the Department of Physiology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Shahbag, Dhaka between January to December 2013. For this purpose, 15 male Long Evans rats were studied. On the basis of vitamin and drug administrations, the rats were divided into three (3) groups (5 rats in each). Control group received normal saline, one experimental group received diclofenac sodium (DS) at a dose of 10 mg/kg/body weight, and another experimental group received combination of DS with αT at a dose of 10 mg/kg/body weight and 500mg/kg/body weight, respectively. All the groups received single dose and equal volume (1 ml) through intraperitoneal route 1 hour before the test. Just one hour after administrations, they were subjected to formalin test followed by formalin induced paw edema test. The data were statistically analyzed by ANOVA followed by Bonferroni Post Hoc test. Results: Combined administration of DS and αT significantly (p<0.001) lowered the variables for nociceptive pain, central analgesic activity, inflammatory pain and inflammation than individual intervention of DS. Conclusion: From this study it may be concluded that, combined administration of diclofenac sodium and ±-tocopherol were more effective in lowering pain and inflammation than individual administration of diclofenac.

Phytochemical Analysis and Anti-Inflammatory Effect of Kenaf and Roselle Seeds

Introduction: Both kenaf (Hibiscus cannabinus) and roselle (Hibiscus sabdariffa) belong to the Malvaceae family. Method: In this study, the phytochemical analysis and anti-inflammatory activity of kenaf seed oil (KSO), kenaf seed extract (KSE), roselle seed oil (RSO) and roselle seed extract (RSE) were investigated. Results:The flavonoids content present in the roselle seed oil (RSO), roselle seed extract (RSE), kenaf seed oil (KSO) and kenaf seed extract (KSE) ranged from 52.94±7.31 mg catechin/100g of sample (KSE) to 290.05±12.04 mg catechin/100 g of (RSE); phenolic content ranged from 108.46±6.40mg GAE/ 100g of sample (RSO) to 229.65±7.91 mg GAE/ 100g of sample (RSE); saponin content ranged from 68.14±3.46 mg saponin/ 100 g of sample (KSO) to 98.50±2.44 mg saponin/ 100g of sample (RSE); terpenoid content ranged from 148.76±9.69 mg linaloo1/100g of sample (KSO) to 294.74±16.14 mg linaloo1/100g of sample (RSE); and alkaloid content ranged from 17.40±1.346%/g (KSO) to 46.95±1.792%/g (RSE). The results showed that KSE, RSO and RSE significantly inhibited (p<0.05) inflammation compared to the control. Conclusion: The present study demonstrates that KSE, RSO and RSE exhibit potent anti-inflammatory property and offer potential for use as a therapeutic regiment in managing inflammatory conditions.

Anti-inflammatory and Analgesic Activities of Alpinia nigra Fruit Extract in Laboratory Animals.

Aim: This study was aimed to evaluate the possible anti-inflammatory and analgesic properties of the ethanol extract of fruit of Alpinia nigra (Zingiberaceae). Study Design: Assessment of anti-inflammatory and analgesic activity. Place and Duration of Study: Department of Pharmacy, North South University, Dhaka, Bangladesh, between June 2012 and February 2013. Methodology: The crude extract was investigated for anti-inflammatory effect on Long Evans rats using carrageenan induced paw edema method. For anti-inflammatory study, 20 rats were divided into 4 different groups each receiving either distilled water, standard drug or the extract at the doses of 250 and 500 mg/kg body weight. The analgesic activity was evaluated by hot plate; acetic acid induced writhing method in Swiss Albino mice divided into 4 different groups (control, standard diclofenac sodium and extract at two different doses of 250 and 500 mg/kg body weight). Results: The results of preliminary phytochemical analysis revealed the presence of alkaloids, flavonoids, tannins, glycosides in significant amounts. The present study assessed anti-inflammatory activity of its fruit extracts at a dose of 250 mg/kg and 500 mg/kg against carrageenan induced paw edema in long Evans rats. Both the extracts were able to show a dose dependent anti-inflammatory activity as compared to diclofenac sodium used as a standard. The extract elicited a highly significant (p<0.001) analgesic activity in a dose dependent manner on hot plate and acetic acid induced writhing methods. Conclusion: The anti-inflammatory and analgesic effect of the ethanol fruit extract of A. nigra may be due to the presence of various chemical constituents especially flavonoids, tannins, alkaloids or terpenoids. These experimental findings would further establish the scientific basis of the traditional uses of the plant in the management of inflammatory conditions as well as control of pain.

Evaluation of the analgesic and anti-inflammatory activity of fixed dose combination: Non-steroidal anti-inflammatory drugs in experimental animals.

Background: In India, a number of fixed dose drug combinations of non-steroidal anti-inflammatory drugs (NSAID's) are available, often as over-the-counter products. These combinations are being prescribed too. Evidence for efficacy of NSIAD fixed dose combination is lacking. Objectives: The current study was undertaken to assess the analgesic and anti-inflammatory efficacy of these combinations over their individual components. Materials and Methods: The study used three NSAIDs viz; paracetamol, ibuprofen and diclofenac sodium, alone or in combination with paracetamol. Animals were divided into six groups with six animals in each group. Analgesic activity was tested by writhing test and paw edema model was used to assess the anti-inflammatory activity. The test drugs were administered orally 30 min prior to injecting 0.6% solution of glacial acetic acid intraperitoneally for writhing test. For paw edema test, after 30 min of drugs administration, animals were injected with 0.1 ml of 1% carrageenan in subplanter region for inducing inflammation. Paw volume was again measured at baseline and after 3 h of subplanter injection of 1% carrageenan. Results: The analgesic and the anti-inflammatory activity of paracetamol and ibuprofen combination were significantly greater than the individual agents when used alone. However, no significant difference in the analgesic or anti-inflammatory activity was found between diclofenac sodium and its combination with paracetamol. It was observed that diclofenac sodium was the most efficacious of the analgesics tested. Combining paracetamol with diclofenac did not show superior analgesic activity compared to diclofenac alone (P = 0.18). Conclusion: Combining paracetamol with ibuprofen enhances analgesic/anti-inflammatory activity over their individual component but potentiation of analgesic activity of diclofenac was not seen when paracetamol was added to it.

Evaluation of antinociceptive and anti-inflammatory activities of the topical preparation of Cipura paludosa (Iridaceae) / Avaliação das atividades antinociceptiva e anti-inflamatória de preparação tópica de Cipura paludosa (Iridaceae)

Alho do mato (Cipura paludosa, Iridaceae) is a medicinal plant found in the Amazon rain forest, North of Brazil. It has been used to treat algic, inflammatory and infectious processes. The aim of this study was to evaluate the anti-inflammatory and antinociceptive action of the crude Cipura paludosa ethanolic extract at concentrations ranging between 2.0 and 4.0% in Oil and Water cream formulations for topical use. The physical-chemical stability of the formulations was monitored over a six-month period with the use of accelerated stability tests. In order to evaluate the anti-inflammatory and antinociceptive activities, we used a paw edema test induced by carrageenan and a formalin test, respectively. The paw edema test showed that there was a statistical difference in the control group in relation to the treatments. The formalin test did not confirm antinociceptive action of the treatments with the extract in the early phase of the test. However, statistical difference was confirmed for the treatments in relation to the control in the late phase. The antinociceptive and anti-inflammatory activities of Cipura paludosa preparations, as demonstrated in the results, at least partially support the ethno-medical uses of this plant.

Allho do mato (Cipura paludosa, Iridaceae) é uma planta medicinal encontrada na floresta Amazônica, norte do Brasil. Essa planta tem sido usada para tratar dores, processos inflamatórios e infecciosos. O objetivo do estudo foi avaliar a ação anti-inflamatória e antinociceptiva do extrato bruto etanólico de Cipura paludosa, nas concentrações que variaram entre 2,0 e 4,0%, em formulações de cremes óleo e água de uso tópico. A estabilidade físico-química das formulações foi monitorada ao longo de um período de seis meses, com a aplicação de ensaios de estabilidade acelerada. A fim de avaliar as atividades anti-inflamatória e antinociceptiva, utilizou-se um teste de edema de pata induzido por carragenina e um teste de formalina, respectivamente. O teste de edema de pata mostrou que houve uma diferença significativa no grupo controle em relação aos tratamentos. O teste da formalina não confirmou efeito antinociceptivo dos tratamentos com o extrato, na primeira fase do ensaio. No entanto, a diferença estatística foi confirmada para os tratamentos em relação ao controle na segunda fase. As atividades antinociceptiva e anti-inflamatória das preparações com Cipura paludosa confirmam de forma parcial o uso etno-médico desta planta.

Effect of different compatibility of Daphnes Giraldii Cortex and Glycyrrhizae Radix et Rhizoma on adjuvant-induced arthritis in rats / 中草药

Objective: To study the therapeutic effects of different compatibility of Daphnes Giraldii Cortex (DGC) and Glycyrrhizae Radix et Rhizoma (GRR) on rat adjuvant-induced arthritis (AA) model, to screen the compatibility ratios, and to explore the possible mechanism. Methods: AA model in SD rats was established, then the arthritic rats were randomly divided into 14 groups such as model, Tripterygium Glycosides Tablet (TGT), low-, mid-, high-dose DGC, low-, mid-, high-dose GRR, low-, mid-, high-dose DGC + GRR (3:1), and low-, mid-, high-dose DGC + GRR (3: 2) groups, and 10 normal rats were as control group. The rats in treatment groups were ig administered 2 d before the model establishment, for 31 d. The body weight changes were observed, the paw edema and arthritis index (AI) were calculated, and the contents of tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) in AA rat serum were detected by ELISA. The expression levels of VEGF and MIF were detected with immunohistochemistry. Results: DGC + GRR, and DGC significantly inhibited the decrease of body weight, also reduced paw swelling, AI, levels of TNF-α and IL-1β in AA rat serum, joint damages of AA rats, and levels of VEGF and MIF in the synovial membrane of AA rats, and the DGC + GRR (3: 2) group had the best effect. The differences were significantly compared with the model group (P < 0.05, 0.01). Conclusion The combined use of DGC and GRR can obviously relieve the arthritis syndrome in AA rats by reducing the expression of serum cytokines as well as inhibiting the joint damage, and its therapeutic effect is better than used separately. Furthermore, the curative effect is the best when the compatibility ratio of DGC and GRR reaches 3: 2. Reducing TNF-α and IL-1β contents in serum and the levels of VEGF and MIF in synovial membrane may be the mechanism of drug treatment of rheumatoid arthritis.

The anti-inflammatory effect of Indonesian Areca catechu leaf extract in vitro and in vivo

BACKGROUND/OBJECTIVES: Overproduction of nitric oxide (NO) by the inducible nitric oxide synthase (iNOS) enzyme can cause inflammation. Cyclooxygenase-2 (COX-2) is also involved in the inflammatory response through regulation of nuclear factor-kappa B (NF-kappaB). Areca catechu is one of the known fruit plants of the Palmaceae family. It has been used for a long time as a source of herbal medicine in Indonesia. In this study, we explored the effect of Indonesian Areca catechu leaf ethanol extract (ACE) in lipopolysaccharide (LPS)-induced inflammation and carrageenan-induced paw edema models. Recently, this natural extract has been in the spotlight because of its efficacy and limited or no toxic side effects. However, the mechanism underlying its anti-inflammatory effect remains to be elucidated. MATERIALS/METHODS: We measured NO production by using the Griess reagent, and determined the expression levels of inflammation-related proteins, such as iNOS, COX2, and NF-kappaB, by western blot. To confirm the effect of ACE in vivo, we used the carrageenan-induced paw edema model. RESULTS: Compared to untreated cells, LPS-stimulated RAW 264.7 cells treated with ACE showed reduced NO generation and reduced iNOS and COX-2 expression. We found that the acute inflammatory response was significantly reduced by ACE in the carrageenan-induced paw edema model. CONCLUSION: Taken together, these results suggest that ACE can inhibit inflammation and modulate NO generation via downregulation of iNOS levels and NF-kappaB signaling in vitro and in vivo. ACE may have a potential medical benefit as an anti-inflammation agent.

Evaluation of anti-inflammatory and antidiabetic activity of ethanolic extracts of Desmodium pulchellum Benth. (Fabaceae) barks on albino wistar rats.

Effects of ethanolic extract of Desmodium pulchellum Benth. (Fabaceae) barks on alloxan-induced diabetic rats were investigated. In diabetic rats, blood glucose levels were reduced by 18.64 – 34.04 % on consumption of the extracts, with greater effect exhibited by the 1000mg/kg extract whereas in Glibenclamide treated diabetic rats, blood glucose levels were reduced upto 73.55%. The results suggested ethanolic extract of barks may contribute to the reduction of blood glucose levels and can be useful in the management of diabetes. The acute oral toxicity showed that the ethanolic extract of D. pulchellum barks was safe until 4000mg/kg body weight and no macroscopical organ abnormalities were observed in acute oral models. The investigations on Albino (Wistar) rats at dosage of 100, 200 and 400 mg/kg of ethanolic extract of D. pulchellum barks were made for anitiinflammatory action by using carrageenan induced paw edema and cotton pellete granuloma technique. The results of the study suggested significant dose dependent activity of extracts as compared to control group for both acute and chronic inflammation.

Evaluation of Analgesic and Anti-Inflammatory Activities of N-Mannich Bases of Substituted 2-Mercapto-1H-Benzimidazoles.

A series of new [1-(N,N-disubstituted)aminomethyl-2-(2,4-dinitrophenyl)sulphanyl]-6-substituted- 1H-benzimidazoles (16a-19f) were synthesized by the Mannich reaction on 2-[(2,4-dinitrophenyl)sulphanyl]-5(6)- substituted-1H-benzimidazoles with appropriate secondary amine and paraformaldehyde in presence of concentrated hydrochloric acid in ethanol. The synthesized compounds have been evaluated for analgesic and antiinflammatory activities. Considerable numbers of them were found to exhibit good activity. 2-(2,4- Dinitrophenylsulphanyl)-6-methoxy-1-pyrrolidin-4-ylmethyl-1H-benzimidazole (18e) was found to be more potent analgesic than standard pentazocine and almost equivalent in its anti-inflammatory activity in comparison with the working standard diclofenac.

Anti-inflammatory activity of Weichang'an Pill / 中草药

Objective: To study the active constituents in the methanol extract of Weichang'an Pill (MEWP) and their anti-inflammatory activity. Methods: The HPLC method was used to anylyze the constituents in MEWP. The anti-inflammatory effects of MEWP were observed on the acute anti-inflammatory models of xylene-induced ear edema, carrageenan-induced paw edema, and acetic acid-induced vascular permeability; Meanwhile the chronic anti-inflammatory model of granuloma was induced by cotton pellet implantation. Results: Twelve active constituents in MEWP were analyzed, including costunolide and dehydro-α-curcumene from Aucklandiae Radix; naringin, hesperedin, and neohesperedin from Aurantii Fructus; magnolol and honokiol from Magnoliae Officinalis Cortex; aloe-emodin, rhein, emodin, chrysophanol, and physcion from Rhei. Radix et Rhizoma. At the dose of 800 mg/kg, the MEWP showed the inhibitory rate of 39.46% on the ear edema and 35.37% on the increasing of capillary permeability induced by acetic acid in mice. It could decrease the paw edema caused by carrageenan after 1 h and inhibit the granuloma induced by cotton pellet implantation. Conclusion: The MEWP could antagonize the reaction of inflammation.