Treatment with Trichilia catigua ethyl-acetate fraction improves healing and reduces oxidative stress in TNBS-induced colitis in rats

2018 ◽  
Vol 107 ◽  
pp. 194-202 ◽  
Author(s):  
Fernando Augusto Vicentini ◽  
Maiara Morselli Coelho Barbosa ◽  
Maísa Carla Fortunato ◽  
Ciomar Aparecida Bersani Amado ◽  
Jurandir Fernando Comar ◽  
...  
2016 ◽  
Vol 41 (5) ◽  
pp. 1170-1184 ◽  
Author(s):  
Larissa Finger Schaffer ◽  
Catiuscia Molz de Freitas ◽  
Ana Paula Chiapinotto Ceretta ◽  
Luis Ricardo Peroza ◽  
Elizete de Moraes Reis ◽  
...  

2020 ◽  
Vol 8 (A) ◽  
pp. 962-969
Author(s):  
Jekson Martiar Siahaan ◽  
Syaffruddin Illyas ◽  
Dharma Lindarto ◽  
Marline Nainggolan

BACKGROUND: Oxidative stress in type 2 diabetes mellitus (T2D) causes insulin resistance and disordered insulin secretion. Pathomechanisms of T2D consist of dysfunctional pancreatic β-cell and insulin resistance caused by free radical (reactive oxygen species and reactive nitrogen species) that produced from the glucose metabolism pathway. Insulin resistance can be measured using the homeostatic model assessment of insulin resistance (HOMA-IR). Oxidative stress can measure through the activities of malondialdehyde (MDA) and superoxide dismutase (SOD). AIM: This research aims to study the potential of chayote (Sechium edule Jacq. Swartz) to be used as antihyperglycemic in T2D. MATERIALS AND METHODS: This research was conducted with a post-test randomized controlled group design. Eleven groups with four male rats each were used. Normal untreated rats were treated under ad libitum feeding and drinking condition. Meanwhile, the rat models were induced with the combination of 45 mg/kg b.w. streptozotocin, 110 mg/kg b.w. nicotinamide, 40.5 mg/kg b.w. metformin, high-fat diet, and/or chayote extract. The chayote extract was orally administered to the rat in the form of ethanol extract and/or ethyl acetate fraction, with three dosages of 45 mg/kg b.w., 100 mg/kg b.w., and 150 mg/kg b.w. for each extract type. The body weight, glucose level, insulin level, MDA, and SOD activities were measured. The HOMA-IR was used. RESULTS: The lowest body weight of the rat model in week 0 was 145 ± 25.31, founded in Group H that was treated with ethyl acetate fraction of chayote extract (45 mg/kg b.w.). The lowest blood sugar level in the group with 2 h glucose load was 112.5 ± 27.00 on average, found in Group G that was treated with chayote ethanolic extract (150 mg/kg b.w.). The highest SOD in the group treated with chayote extract was 1.27 ± 0.20, founded in Group H treated with ethyl acetate 45 mg/kg b.w. The lowest level of MDA was 0.86 ± 0.70 in Group H treated with ethyl acetate 45 mg/kg b.w. The lowest fasting blood sugar spectrophotometer level was 150.54 ± 17.24 mg/dl in Group K with metformin treatment, followed by 155.16 ± 31.92 mg/dl in Group K treated 45 mg/kg b.w. ethanol treatment. The highest insulin level was 6.14 ± 0.71, founded in Group F that was treated with chayote ethanolic extract 100 mg/kg b.w. The lowest measurement of HOMA-IR was 0.16 ± 0.80 in Group E treated with ethanol extract of chayote 45 mg/kg b.w. CONCLUSION: Ethanol extract and fractionation of chayote work as an antioxidant and anti-insulin resistance.


2018 ◽  
Vol 337 ◽  
pp. 173-182 ◽  
Author(s):  
Jacqueline Godinho ◽  
Rúbia Maria Weffort de Oliveira ◽  
Anacharis Babeto de Sa-Nakanishi ◽  
Cristiano Correia Bacarin ◽  
Claudia Hitomi Huzita ◽  
...  

2018 ◽  
Vol 221 ◽  
pp. 109-118 ◽  
Author(s):  
Jacqueline Godinho ◽  
Anacharis Babeto de Sa-Nakanishi ◽  
Lucas Stafuza Moreira ◽  
Rúbia Maria Weffort de Oliveira ◽  
Claudia Hitomi Huzita ◽  
...  

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Jing Wang ◽  
Dongmei Hu ◽  
Jing Hou ◽  
Shushu Li ◽  
Weiping Wang ◽  
...  

The main purposes of this study were to screen the antioxidant activities of various fractions of Hemerocallis citrina Baroni and test their hepatoprotective effects in vitro. Antioxidant assays (2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and reducing power experiments) and tert-butyl hydroperoxide- (t-BHP-) induced BRL-3A oxidative damage experiments were performed in vitro. The H. citrina ethyl acetate fraction (HCEA) was determined to have strong antioxidant activity because of its high flavonoid and polyphenol content. Ultraperformance liquid chromatography- (UPLC-) photodiode array (PDA)/mass spectrometry (MS) analysis showed that the main components of the HCEA were flavonoids and caffeic acid derivatives. A total of 17 compounds were identified. HCEA also effectively protected the liver against t-BHP-induced oxidative stress injury and significantly reduced reactive oxygen (ROS) accumulation. Moreover, HCEA significantly reduced levels of alanine aminotransferase (ALT), aspartate transaminase (AST), and lactate dehydrogenase (LDH). Further studies have shown that HCEA inhibits t-BHP-induced apoptosis by increasing B-cell lymphoma-2 (BCL-2) activity and decreasing caspase-3 and caspase-9 activity. Moreover, HCEA enhanced the activity of antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT), as well as the total antioxidant capacity (T-AOC), and increased the antioxidant level of glutathione (GSH) in BRL-3A cells. HCEA increased the antioxidant capacity of cells by increasing the gene expression of AMP-activated protein kinase (AMPK), extracellular signal-regulated kinase (ERK), P38, nuclear factor, erythroid 2 like 2 (Nrf2), SOD, glutamate-cysteine ligase catalytic subunit (GCLC), glutamate-cysteine ligase modifier subunit (GCLM), and heme oxygenase 1 (HO-1), which are associated with antioxidant pathways to protect against oxidative stress. In conclusion, HCEA protected BRL-3A cells against t-BHP-induced oxidative stress damage via antioxidant and antiapoptosis pathways. Therefore, H. citrina Baroni may serve as a potential hepatoprotective drug.


2015 ◽  
Vol 87 (2) ◽  
pp. 753-763 ◽  
Author(s):  
KATLIN S. RECH ◽  
CRISTIANE B. SILVA ◽  
JULIANA D. KULIK ◽  
JOSIANE F.G. DIAS ◽  
SANDRA M.W. ZANIN ◽  
...  

Senna ocidentalis is a weed, native to Brazil, considered to infest crops and plantations, and is responsible for yield losses of several crops, particularly soybean. The aim of this work was to evaluate if theCroton argenteus extract and fractions possess phytotoxic activity on S. ocidentalis. The crude ethanolic extract (CEE) and its hexanic (HF), chloroformic (CLF) and ethyl acetate (EAF) fractions were tested in germination, growth, oxidative stress increase, Adenosine triphosphate, L-malate and succinate synthesis. The crude extract and its fractions slowed down the germination of S. ocidentalis and decreased the final percentage of germination. Oxidative stress was also increased in the seedlings, by an increase of catalase, peroxidase, superoxide dismutase, glutathione reductase and lipid peroxidation; and it became clear that the ethyl acetate fraction was more phytotoxic. The results indicate that the crude extract and fractions of C. argenteus compromise the mitochondrial energy metabolism, by the inhibition of mitochondrial ATP production, with a decrease in the production of L-malate and succinate. The ethyl acetate fraction of C. argenteus showed high activity on germination and growth, and these effects take place by means of mitochondrial metabolism alterations and increase the oxidative stress, leading the seedling death.


2014 ◽  
Vol 23 (4) ◽  
pp. 1247-1252 ◽  
Author(s):  
Moon Seok Lee ◽  
In Il Lee ◽  
Yongeun Kim ◽  
Young Jun Kim ◽  
Ho Jin Heo ◽  
...  

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