scholarly journals LOWERING URIC ACID EFFICACY TEST OF THE COMBINED EXTRACT OF UNCARIA GAMBIR (HUNTER) ROXB. AND CAESALPINIA SAPPAN L. IN VIVO AND IN VITRO

2018 ◽  
Vol 11 (8) ◽  
pp. 166
Author(s):  
Sri Ningsih ◽  
Fahri Fahrudin
Keyword(s):  
Antioxidant Activity ◽  
Uric Acid ◽  
Inhibitory Activity ◽  
Positive Control ◽  
Polyphenol Content ◽  
Caesalpinia Sappan ◽  
In Vivo Experiments ◽  
A Value

 Objective: Hyperuricemia (high uric acid levels) prevalence increased year by year. This study was aimed to elaborate the in vitro xanthine oxidase (XO) inhibitory activity and in vivo lowering hyperuricemic effect of Uncaria gambir (Hunter) Roxb) (gambir), Caesalpinia sappan L. (secang) and the combined extract of secang and gambir (formulae extract [FE]).Methods: Gambir and secang extracts were prepared by maceration with ethanol and FE was the proportioned combination of these two extracts. XO inhibitory activity was determined by measuring the formation of uric acid in the xanthine/XO system in vitro using allopurinol as a positive control at 100 ug/mL. Antioxidant activity was by 1,1-diphenyl-2-picrylhydrazyl radical reducing methods. The in vivo experiments were conducted in the oxonate-induced hyperuricemia rat model, in which FE was gavaged p.o. at the arrange dose of 75, 150, and 300 mg/kg bw for 2 weeks. Polyphenol content was measured using Folin–Ciocalteu reagent spectrophotometrically.Results: The XO inhibitory activity of FE was 80% of allopurinol, while secang and gambir were 98% and 50%, respectively. The strength was appropriate to the total polyphenol content, in which it decreased in the order of secang (99%) > FE (86%) > gambir (46%). Furthermore, FE at all tested doses was able to decrease uric acid levels. FE also demonstrated antioxidant activity with a value of 74% relative to Vitamin C at 4 ug/mL.Conclusion: These studies could be concluded that FE exhibited the ability to decrease uric acid level so that it was potential to be developed further as a uric acid-lowering agent.

scholarly journals EVALUASI AKTIVITAS INHIBISI XANTIN OKSIDASE DAN KANDUNGAN SENYAWA POLIFENOL DARI EKSTRAK SAPPAN

2018 ◽  
Vol 5 (2) ◽  
pp. 157
Author(s):  
Sri Ningsih ◽  
. Churiyah
Keyword(s):  
Uric Acid ◽  
Xanthine Oxidase ◽  
Inhibitory Activity ◽  
Ethanolic Extract ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Caesalpinia Sappan ◽  
Total Polyphenol Content

Evaluation of xanthine oxidase inhibitory activity and polyphenolic content of sappan extractABSTRACTHyperuricemia is a disease that is characterized by a high uric acid level, in which the number of patients tends to increase every year. This research was intended to evaluate the xanthine oxidase (XO) inhibitory activity and determinate the total polyphenol content of heartwood sappan (Caesalpinia sappan L.) extract. The extract was prepared by macerating the dry powder wood using 70% ethanol at room temperature. The quality of ethanolic extract obtained was evaluated based on BPOM guideline. XO inhibitory power was determined by measuring uric acid produced in the xanthine/XO system in vitro. The polyphenol content of the extract was measured using Folin-Ciocalteu reagent spectrophotometrically. The results showed that the quality of sappan semisolid extract fulfilled the required standard. Sappan extract inhibited XO activity by 98% relative to the positive control, allopurinol, at the final extract concentration of 100 µg/mL. The total polyphenol content was 26% of the crude extract. It could be concluded that sappan ethanolic extract has the potential to be developed as an ingredient for hyperuricemia treatment.Keywords: hyperuricemia, sappan, total polyphenol, xanthine, xanthine oxidase ABSTRAKHiperurisemia adalah penyakit yang dicirikan dengan kadar asam urat tinggi dimana prevalensi penderita cenderung meningkat. Penelitian ini bertujuan untuk mempelajari aktivitas esktrak kayu sappan (Caesalpinia sappan L.) dalam menginhibisi enzim XO (xantin oksidase) secara in vitro dan penentuan kadar senyawa polifenol total yang terkandung di dalamnya. Ekstrak dibuat dengan cara maserasi serbuk kayu menggunakan pelarut etanol 70% pada suhu kamar. Kualitas ekstrak dievaluasi mengacu pada parameter karakterisasi ekstrak yang ditetapkan oleh BPOM. Aktivitas inhibisi XO ditetapkan dengan mengukur kadar asam urat yang terbentuk pada sistem xantin/XO in vitro. Kadar polifenol ekstrak diukur menggunakan pereaksi Folin-Ciocalteu secara spektrofotometri. Hasil analisis menyatakan bahwa kualitas ekstrak kental sappan memenuhi persyaratan yang ada. Pengujian inhibisi XO dengan pembanding positif allopurinol pada konsentrasi akhir ekstrak sebesar 100 µg/mL menunjukkan bahwa ekstrak mempunyai kekuatan menginhibisi XO sebesar 98% relatif terhadap pembanding positif allopurinol. Kadar senyawa polifenol total dalam ekstrak sappan sebesar 26% dari ekstrak kasar. Dari penelitian ini dapat disimpulkan bahwa ekstrak sappan mempunyai potensi untuk dikembangkan sebagai bahan untuk mengatasi hiperurisemia.Kata Kunci: hiperurisemia, polifenol total, sappan, xantin, xantin oksidase

scholarly journals IN VITRO AND IN VIVO STUDIES OF ANTIHYPERURICEMIC AND ANTIOXIDANT ACTIVITY FROM BULBS OF BAWANG TIWAI (ELEUTHERINE PALMIFOLIA (L.) MERR.) FROM INDONESIA

2019 ◽  
Vol 12 (1) ◽  
pp. 497
Author(s):  
Dian Ratih Laksmitawati ◽  
Rininta Firdaus ◽  
Mediana Astika Zein
Keyword(s):  
Antioxidant Activity ◽  
Body Weight ◽  
Uric Acid ◽  
Ethanol Extract ◽  
Positive Control ◽  
In Vivo Studies ◽  
Inhibit Lipid Peroxidation ◽  
Plasma Malondialdehyde

Objectives: This study would like to investigate the in vitro antioxidant activity through 2,2-diphenyl-1-picrylhydrazyl assay and in vitro xanthine oxidase activity of the bulbs. This study performs in vivo assays to study the antihyperuricemic activity and antioxidant in the hyperuricemic rat through plasma malondialdehyde measurement. Method: The study was conducted by testing the fresh bulbs of bawang tiwai (Eleutherine palmifolia (L.) Merr. with chemical solvent of ethanol 70% to extract the bulbs. Allopurinol and Vitamin C were used as positive control for the antihyperuricemic assay and antioxidant assay, respectively. Other chemical substances were also used in this study. This study used chicken extract (Brands) 20 ml/kg/body weight to induce the level of uric acid in the blood serum, and potassium oxonate (Sigma 156124) to inhibit the uricase in rats. Results: The results show that the levels of uric acid were measured using spectrophotometer with dichloro-hydroxybenzen sulfonate (Biolabo) a as reagent. The ethanol extract of bawang tiwai (EBT) (E. palmifolia (L.) Merr) was potential to reduce uric acid level at 140, 280, and 560 mg/kg body weight, but possibly without inhibition against xanthine oxydase activity. Conclusion: All doses of EBT could inhibit lipid peroxidation in hyperuricemic condition caused by high purine diet in 14 days.

scholarly journals A Simple and a Reliable Method to Quantify Antioxidant Activity In Vivo

Antioxidants ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 142 ◽  
Author(s):  
María Pilar de Torre ◽  
Rita Yolanda Cavero ◽  
María Isabel Calvo ◽  
José Luis Vizmanos
Keyword(s):  
Antioxidant Activity ◽  
Green Tea ◽  
Reliable Method ◽  
Positive Control ◽  
Negative Control ◽  
In Vivo Model ◽  
In Vivo Experiments ◽  
Age Related

The characterization of compounds with antioxidant activity is of great interest due to their ability to reduce reactive oxygen species production and, therefore, prevent some age-related diseases. Its antioxidant capacity can be analyzed by different methods both in vitro and in vivo. Caenorhabditis elegans is an in vivo model widely used in ageing research. Until now, available tests analyze functional effects in the worms, so the antioxidant activity of the compound is indirectly monitored. We have developed a simple and a reliable method to quantify internal antioxidant activity in vivo. To validate this method, we analyzed an aqueous green tea extract and two other compounds with a well-known antioxidant activity and without this activity. The results obtained (EC50 green tea = 21.76 ± 1.28 µg/mL; EC50 positive control = 8.50 ± 0.33 µg/mL; negative control EC50 > 500 µg/mL) can help in the design of further in vivo experiments. Thus, our method can be used as a previous screening capable of reducing the gap between in vitro and in vivo assays.

scholarly journals IN VITRO AND IN VIVO STUDIES OF ANTIHYPERURICEMIC AND ANTIOXIDANT ACTIVITY FROM BULBS OF BAWANG TIWAI (ELEUTHERINE PALMIFOLIA (L.) MERR.) FROM INDONESIA

2019 ◽  
Vol 12 (1) ◽  
pp. 497
Author(s):  
Dian Ratih Laksmitawati ◽  
Rininta Firdaus ◽  
Mediana Astika Zein
Keyword(s):  
Antioxidant Activity ◽  
Body Weight ◽  
Uric Acid ◽  
Ethanol Extract ◽  
Positive Control ◽  
In Vivo Studies ◽  
Inhibit Lipid Peroxidation ◽  
Plasma Malondialdehyde

Objectives: This study would like to investigate the in vitro antioxidant activity through 2,2-diphenyl-1-picrylhydrazyl assay and in vitro xanthine oxidase activity of the bulbs. This study performs in vivo assays to study the antihyperuricemic activity and antioxidant in the hyperuricemic rat through plasma malondialdehyde measurement. Method: The study was conducted by testing the fresh bulbs of bawang tiwai (Eleutherine palmifolia (L.) Merr. with chemical solvent of ethanol 70% to extract the bulbs. Allopurinol and Vitamin C were used as positive control for the antihyperuricemic assay and antioxidant assay, respectively. Other chemical substances were also used in this study. This study used chicken extract (Brands) 20 ml/kg/body weight to induce the level of uric acid in the blood serum, and potassium oxonate (Sigma 156124) to inhibit the uricase in rats. Results: The results show that the levels of uric acid were measured using spectrophotometer with dichloro-hydroxybenzen sulfonate (Biolabo) a as reagent. The ethanol extract of bawang tiwai (EBT) (E. palmifolia (L.) Merr) was potential to reduce uric acid level at 140, 280, and 560 mg/kg body weight, but possibly without inhibition against xanthine oxydase activity. Conclusion: All doses of EBT could inhibit lipid peroxidation in hyperuricemic condition caused by high purine diet in 14 days.

scholarly journals In vivo hypotensive effect and in vitro inhibitory activity of some Cyperaceae species

2013 ◽  
Vol 49 (4) ◽  
pp. 803-809
Author(s):  
Monica Lacerda Lopes Martins ◽  
Henrique Poltronieri Pacheco ◽  
Iara Giuberti Perini ◽  
Dominik Lenz ◽  
Tadeu Uggere de Andrade ◽  
...  
Keyword(s):  
Inhibitory Activity ◽  
Colorimetric Assay ◽  
Hypotensive Effect ◽  
Ace Inhibition ◽  
Inhibitory Effect ◽  
Positive Control ◽  
Total Phenolic ◽  
Before And After

In 1820, French naturalist August Saint Hillaire, during a visit in Espírito Santo (ES), a state in southeastern Brazil, reported a popular use of Cyperaceae species as antidote to snake bites. The plant may even have a hypotensive effect, though it was never properly researched. The in vitro inhibitory of the angiotensin converting enzyme (ACE) activity of eigth ethanolic extracts of Cyperaceae was evaluated by colorimetric assay. Total phenolic and flavonoids were determined using colorimetric assay. The hypotensive effect of the active specie (Rhychonospora exaltata, ERE) and the in vivo ACE assay was measured in vivo using male Wistar Kyoto (ERE, 0.01-100mg/kg), with acetylcholine (ACh) as positive control (5 µg/kg, i.v.). The evaluation of ACE in vivo inhibitory effect was performed comparing the mean arterial pressure before and after ERE (10 mg/kg) in animals which received injection of angiotensin I (ANG I; 0,03, 03 and 300 µg/kg, i.v.). Captopril (30 mg/kg) was used as positive control. Bulbostylis capillaris (86.89 ± 15.20%) and ERE (74.89 ± 11.95%, ERE) were considered active in the in vitro ACE inhibition assay, at 100 µg/mL concentration. ACh lead to a hypotensive effect before and after ERE's curve (-40±5% and -41±3%). ERE showed a dose-dependent hypotensive effect and a in vivo ACE inhibitory effect. Cyperaceae species showed an inhibitory activity of ACE, in vitro, as well as high content of total phenolic and flavonoids. ERE exhibited an inhibitory effect on both in vitro and in vivo ACE. The selection of species used in popular medicine as antidotes, along with the in vitro assay of ACE inhibition, might be a biomonitoring method for the screening of new medicinal plants with hypotensive properties.

scholarly journals Total polyphenol content and antioxidant activity of commercial Noni (Morinda citrifolia L.) juice and its components

2010 ◽  
Vol 46 (4) ◽  
pp. 651-656 ◽  
Author(s):  
Adriana Bramorski ◽  
Adriana da Rosa Cherem ◽  
Chaiana Paula Marmentini ◽  
Joseane Torresani ◽  
Tatiana Mezadri ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Capacity ◽  
Grape Juice ◽  
Morinda Citrifolia ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Total Polyphenol Content ◽  
Treatment And Prevention

The plant Morinda citrifolia L. (noni) has been the focus of many recent studies due to its potential effects on treatment and prevention of several diseases. However, there are few in vivo and in vitro studies concerning its composition and antioxidant capacity. The aim of the present study was to determine the total polyphenol content (TPC) and antioxidant capacity of a juice commercialized as noni juice, but containing grape, blueberry and noni fruits. Commercial noni juice was compared against its separate constituents of blueberry and grape juice. Folin-Ciocalteu and DPPH• methods were used to determine the concentration of total polyphenol content and antioxidant activity, respectively. Commercial noni juice presented higher values of TPC (91.90 mg of gallic acid/100 mL juice) and antioxidant activity (5.85 mmol/L) compared to its 5% diluted constituents. Concentrated blueberry juice presented higher TPC and antioxidant activity than the other juices analyzed. Considering that the blueberry and grape juices account for only 10% in the composition of commercial noni juice, it can be inferred that these two components contribute significantly to the antioxidant activity. Therefore, additional studies are necessary in order to elucidate the contribution of the noni juice as an antioxidant.

scholarly journals Antioxidant and Hypoglycemic Properties of Seeds of Cucurbitaceae Family from Western Nepal

2019 ◽  
Vol 9 (2) ◽  
pp. 1-5
Author(s):  
Atisammodavardhana Kaundinnyayana ◽  
Anita G.C ◽  
Asmita Banstola ◽  
Kishwor Poudel ◽  
Nirmal Acharya ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging ◽  
Ethanolic Extract ◽  
Positive Control ◽  
Lagenaria Siceraria ◽  
Benincasa Hispida ◽  
Ic50 Values ◽  
In Vitro Antioxidant Activity

Introduction: Diabetes mellitus is an endocrine and metabolic disorder characterized by the defect in insulin secretion or insulin action or both. The association between diabetes mellitus and oxidative stress is well established. Cucurbitaceae is the largest family containing 120 genera mostly grown for its sweet and juicy fruit in warm climates all over the world. In the present work ethanolic extracts of the seeds of Trichosanthes cucumerina Linn (Chichinno), Lagenaria siceraria (Lauka), Cucurbita pepo (Pharsi), Luffa aegiptiaca (Ghiraula), and Benincasa hispida (Kubindo) collected from Western Nepal has been evaluated for their in vitro antioxidant activity and in vivo hypoglycemic effects. Methods: In vitro antioxidant activity was assessed by using DPPH free radical scavenging activities and their IC50 values were calculated. In vivo hypoglycemic effect was examined on normoglycemic rats. The clinical significance of ethanolic extract at the doses of 250 and 500 mg/kg body weight was investigated in 0, 30, 60, 120 and 180 minutes of oral administration. Metformin treated group was used as the positive control. Results: For DPPH radical scavenging action, the IC50 values of Trichosanthes cucumerina, Luffa aegiptiaca, Benincasa  hispida, Cucurbita pepo, Lagenaria siceraria were found to be 60.72, 127.73, 49.63, 98.16 and 52.46 µg/ml respectively which were compared to the IC50 value of ascorbic acid (Positive control) which was found to be 38.11 µg/ml. The extracts of Benincasa hispida, and were having higher antioxidant activity and tested for in vivo hypoglycemic activity.In vivo administration of two doses of ethanolic extract of Lagenaria siceraria reduced the level of blood glucose while the best result was obtained at 250 mg/kg. Conclusions: Present study revealed promising antioxidant and hypoglycemic activity of ethanolic extract of Lagenaria siceraria. The further exploration of Lagenaria siceraria for its effective use in the traditional medicinal system is essential.

Design, Synthesis and Pharmacological Evaluation of Gastro- Protective Anti-inflammatory Analgesic Agents based on Dual Oxidative Stress / Cyclooxygenase Inhibition

2020 ◽  
Vol 19 (3) ◽  
pp. 268-290 ◽  
Author(s):  
Monika Gaba ◽  
Sarbjot Singh ◽  
Chander Mohan ◽  
Richa Dhingra ◽  
Monika Chauhan ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Inhibitory Activity ◽  
Frap Assay ◽  
Anti Oxidant ◽  
Cox 2 ◽  
Anti Inflammatory ◽  
Analgesic Activities ◽  
Cox 1

Background: Non-steroidal anti-inflammatory drugs (NSAIDs) derived local generation of reactive oxygen species (ROS) plays a crucial role in the formation of gastric ulceration. Objective: Therefore, anti-inflammatory analgesics with potent antioxidant activity could be a potential therapeutic strategy for the treatment of pain and inflammatory disorders without gastrointestinal (GI) side effects. Methods: In an effort to develop gastroprotective analgesic and anti-inflammatory agents, a series of 2-methylamino-substituted-1H-benzo[d] imidazol-1-yl) (phenyl) methanone derivatives were synthesized and evaluated in vitro for cyclooxygenase (COX) inhibition as well as anti-oxidant potential by the FRAP assay. The compounds with significant in vitro COX-1/COX-2 inhibitory activity and antioxidant activity were further screened in vivo for their anti-inflammatory and analgesic activities. Moreover, the ulcerogenic potential of test compounds was also studied. To gain insight into the plausible mode of interaction of compounds within the active sites of COX-1 and COX-2, molecular docking simulations were performed. Results: Among the various synthesized molecules, most of the compounds showed good cyclooxygenase inhibitory activity and efficient antioxidant activity in FRAP assay. After preliminary and indicative in vitro assays, three compounds exhibited most significant antiinflammatory and analgesic activity with better gastric tolerability during their in vivo evaluation. Ligand interaction studies indicated highest dock score -43.05 of 1,2- disubstituted benzimidazole derivatives in comparison to the reference ligand -30.70. Overall studies provided us (2-((4-methoxyphenylamino) methyl) -1h-benzo [d] imidazol- 1-yl) (phenyl) methanone as a lead with potent gastro-protective anti-inflammatory and analgesic activities that can be used for future research. Conclusion: From the above results, it can be concluded that designing of multifunctional molecules with COX-1/COX-2 inhibitory and anti-oxidant activities could hold a great promise for further development of GI-safer NSAIDs.

Efficient Cellular Automata Method for Heat Transfer in Tumor

2014 ◽  
Vol 136 (7) ◽  
Author(s):  
Wu Jinghua ◽  
Guo Zhendong ◽  
Chen Jian
Keyword(s):  
Cellular Automata ◽  
Numerical Method ◽  
High Efficiency ◽  
Treatment Method ◽  
Bioheat Transfer ◽  
Temperature Model ◽  
In Vivo Experiments ◽  
A Value

Magnetic interstitial hyperthermia is a hopeful treatment method for tumor. Before treatment, the tumor would be embedded with a number of ferromagnetic seeds, which can produce energy under an alternating magnetic field. The tumor cells would be necrosed once the temperature exceeding to a value. However, the normal tissue around the tumor is expected to be under safety. Hence, temperature simulation is necessary to avoid any mistake treatment planning, meanwhile, the calculation is required as quick as possible. We developed an efficient cellular automata (CA) numerical method to solve the bioheat transfer equation. The CA equation is derived from Lattice Boltzmann equation. As a discrete numerical method in space and time, CA can be used to deal with the complicated boundaries, such as the huge vessels incorporated in the tumor, which were not well treated in traditional methods. The model of ferromagnetic seed, which is critical to the numerical results, is treated with a simple numerical temperature model. In order to evaluate the proposed method, in vitro and in vivo experiments are carried out, respectively. After comparison between the numerical and the experimental results, the proposed method shows perfect calculation precision and high efficiency, which is significant for clinical treatment.

scholarly journals Solid Lipid Nanoparticles Loading Idebenone Ester with Pyroglutamic Acid: In Vitro Antioxidant Activity and In Vivo Topical Efficacy

Nanomaterials ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 43 ◽  
Author(s):  
Lucia Montenegro ◽  
Anna Panico ◽  
Ludovica Santagati ◽  
Edy Siciliano ◽  
Sebastiano Intagliata ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Properties ◽  
Pyroglutamic Acid ◽  
Solid Lipid ◽  
In Vivo Experiments ◽  
Physico Chemical ◽  
Human Volunteers ◽  
Lipid Nanocarriers

Idebenone (IDE), a strong antioxidant widely investigated for the treatment of neurodegenerative diseases and skin disorders, shows low oral and topical bioavailability due to its unfavorable physico-chemical properties. In this work, to improve IDE topical effectiveness, we explored a two-steps approach: (1) we synthesized an IDE ester (IDEPCA) with pyroglutamic acid, a molecule whose hydrating effects are well known; (2) we loaded IDEPCA into solid lipid nanocarriers (SLN). We evaluated in vitro antioxidant and anti-glycation activity and in vivo hydrating effects after topical application in human volunteers from gel vehicles of IDEPCA SLN in comparison to IDE SLN. All SLN showed good technological properties (mean particle size < 25 nm, polydispersity index < 0.300, good stability). The oxygen radical absorbance capacity assay showed that IDEPCA SLN and IDE SLN had similar antioxidant activity while IDEPCA SLN were more effective in the in vitro NO scavenging assay. Both IDEPCA and IDE SLN showed the same effectiveness in inhibiting the formation of advanced glycation end products. In vivo experiments pointed out a better hydrating effect of IDEPCA SLN in comparison to IDE SLN. These results suggest that the investigated approach could be a promising strategy to obtain topical formulations with increased hydrating effects.

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