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Asiatic acid

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https://www.readbyqxmd.com/read/28381084/retraction-of-antioxidative-and-antiinflammatory-activities-of-asiatic-acid-glycyrrhizic-acid-and-oleanolic-acid-in-human-bronchial-epithelial-cells
#1
Shih-Ming Tsao, Mei-Chin Yin
No abstract text is available yet for this article.
April 6, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28320097/asiatic-acid-ameliorates-pulmonary-fibrosis-induced-by-bleomycin-blm-via-suppressing-pro-fibrotic-and-inflammatory-signaling-pathways
#2
Shu-Hong Dong, Yan-Wei Liu, Feng Wei, Hui-Zhen Tan, Zhi-Dong Han
Idiopathic pulmonary fibrosis is known as a life-threatening disease with high mortality and limited therapeutic strategies. In addition, the molecular mechanism by which pulmonary fibrosis developed is not fully understood. Asiatic acid (AA) is a triterpenoid, isolated from Centella asiatica, exhibiting efficient anti-inflammatory and anti-oxidative activities. In our study, we attempted to explore the effect of Asiatic acid on bleomycin (BLM)-induced pulmonary fibrosis in mice. The findings indicated that pre-treatment with Asiatic acid inhibited BLM-induced lung injury and fibrosis progression in mice...
March 17, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28251074/the-anti-inflammatory-effects-of-asiatic-acid-in-lipopolysaccharide-stimulated-human-corneal-epithelial-cells
#3
Hao Chen, Xiao-Min Hua, Bai-Chen Ze, Bin Wang, Li Wei
AIM: To investigate the anti-inflammatory effects of asiatic acid (AA) on lipopolysaccharide (LPS)-induced inflammatory response in human corneal epithelial cells (HCECs). METHODS: Cell viability was measured using a cell counting kit-8 (CCK-8) assay. Quantitative real-time polymerase chain reaction (qRT-PCR) was used to determine the mRNA expression of interleukin-8 (IL-8), interleukin-6 (IL-6), interleukin-1β (IL-1β), tumor necrosis factor-alpha (TNF-α), and transforming growth factor-β (TGF-β) in HCECs...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28205096/pharmacological-effects-of-asiatic-acid-in-glioblastoma-cells-under-hypoxia
#4
Flourina Kumar Thakor, Ka-Wai Wan, Philip John Welsby, Gail Welsby
Glioblastoma multiforme is the most common and malignant primary brain tumor in adults. Despite current treatment options including surgery followed by radiation and chemotherapy with temozolomide and cisplatin, the median survival rate remains low (<16 months). Combined with increasing drug resistance and the inability of some compounds to cross the blood-brain barrier, novel compounds are being sought for the treatment of this disease. Here, we aimed to examine the pharmacological effect of Asiatic acid (AA) in glioblastoma under hypoxia...
February 15, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28181071/neurotrophic-effect-of-asiatic-acid-a-triterpene-of-centella-asiatica-against-chronic-1-methyl-4-phenyl-1-2-3-6-tetrahydropyridine-hydrochloride-probenecid-mouse-model-of-parkinson-s-disease-the-role-of-mapk-pi3k-akt-gsk3%C3%AE-and-mtor-signalling-pathways
#5
Jagatheesan Nataraj, Thamilarasan Manivasagam, Arokiasamy Justin Thenmozhi, Musthafa Mohamed Essa
Regulation of various signalling (Ras-MAPK, PI3K and AKT) pathways by augmented activity of neurotrophic factors (NTFs) could prevent or halt the progress of dopaminergic loss in Parkinson's disease (PD). Various in vitro and in vivo experimental studies indicated anti-parkinsonic potential of asiatic acid (AA), a pentacyclic triterpene obtained from Centella asiatica. So the present study is designed to determine the neurotrophic effect of AA against 1-methyl 4-phenyl 1, 2, 3, 6-tetrahydropyridine hydrochloride/probenecid (MPTP/p) neurotoxicity in mice model of PD...
February 8, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28119810/asiatic-acid-inhibits-lung-cancer-cell-growth-in-vitro-and-in-vivo-by-destroying-mitochondria
#6
Tiancong Wu, Ji Geng, Wenjie Guo, Jing Gao, Xixu Zhu
Asiatic acid (AA), a pentacyclic triterpene found in Centella asiatica, displays significant anti-proliferative effects on cancer cells in vitro although the underlying mechanism of this effect remains unknown. This study investigated the efficacy and mechanism of action of AA against lung cancer both in vivo and in vitro. Using the MTT assay, AA was found to induce apoptosis in a dose- and time-dependent manner, an effect enhanced by pretreatment with an autophagy inhibitor. It also elevated expression of microtubule-associated protein 1 light chain 3 (LC3) and decreased the expression of p62...
January 2017: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/28110191/asiatic-acid-enhances-nrf2-signaling-to-protect-hepg2-cells-from-oxidative-damage-through-akt-and-erk-activation
#7
Zhimin Qi, Xinxin Ci, Jingbo Huang, Qinmei Liu, Qinlei Yu, Junfeng Zhou, Xuming Deng
Asiatic acid (AA), a natural triterpene isolated from the plant Centella asiatica, have antioxidative potential, but the molecular mechanism of AA against oxidative stress remains unclear. Our study was performed to investigate the antioxidative effect of AA against oxidative stress and the antioxidative mechanism in tert-butyl hydroperoxide (t-BHP) -stimulated the HepG2 cells. The results showed that AA suppressed t-BHP-induced cytotoxicity, apoptosis, and reactive oxygen species (ROS) generation. Additionally, AA activated the nuclear factor erythroid 2-related factor 2 (Nrf2) signal, which was closely related to induction Nrf2 nuclear translocation, reduction the expression of Keap1 and up-regulation the activity of the antioxidant response element (ARE)...
April 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28053540/a-novel-synthetic-asiatic-acid-derivative-induces-apoptosis-and-inhibits-proliferation-and-mobility-of-gastric-cancer-cells-by-suppressing-stat3-signaling-pathway
#8
Gang Wang, Yue Jing, Lingsen Cao, Changchang Gong, Zhunan Gong, Xiangrong Cao
Activation of the transcription factor, signal transducers and activators of transcription 3 (STAT3), has been linked to the proliferation and migration of a variety of human cancer cells. These actions occur via the upregulation or downregulation of cell survival and tumor suppressor genes, respectively. Importantly, agents that can suppress STAT3 activation have the potential for use in the prevention and treatment of various cancers. In this study, an Asiatic acid (AA) derivative, N-(2α,3β,23-acetoxyurs-12-en-28-oyl)-l-proline methyl ester (AA-PMe), is reported to dose dependently suppress constitutive STAT3 activation in gastric cancer cells...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28004603/asiatic-acid-attenuates-pre-neoplastic-lesions-oxidative-stress-biotransforming-enzymes-and-histopathological-alterations-in-1-2-dimethylhydrazine-induced-experimental-rat-colon-carcinogenesis
#9
Aktarul Islam Siddique, Vijay Mani, Sivaranjani Arivalagan, Nisha Susan Thomas, Nalini Namasivayam
Asiatic acid (AA), a pentacyclic triterpenoid, derived from the tropical medicinal plant Centella asiatica is known to exhibit numerous pharmacological properties. We hypothesized that AA will have chemopreventive potential against 1,2-dimethylhydrazine (DMH)-induced experimental colon carcinogenesis in male Wistar rats. Rats were arbitrarily divided into six groups. Group I rats were processed as control. Group II rats received AA (8 mg/kg b.w., p.o.) and groups III-VI rats received subcutaneous injections of DMH (20 mg/kg b...
February 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/28003581/triterpenes-suppress-octanoylated-ghrelin-production-in-ghrelin-expressing-human-gastric-carcinoma-cells
#10
Kensuke Nakajima, Shigeru Oiso, Takuhiro Uto, Osamu Morinaga, Yukihiro Shoyama, Hiroko Kariyazono
Ghrelin is an appetite-stimulating peptide hormone with an octanoyl modification at serine 3 that is essential for its orexigenic effect. Ghrelin O-acyltransferase (GOAT) is the enzyme that catalyzes ghrelin acylation using fatty acyl-coenzyme A as a substrate. We previously developed an assay system based on the AGS-GHRL8 cell line that produces octanoylated ghrelin in the presence of octanoic acid, and demonstrated that some fatty acids suppressed octanoylated ghrelin production. Recent studies have reported that triterpenes have anti-obesity effect...
2016: Biomedical Research
https://www.readbyqxmd.com/read/28001462/comparative-pharmacokinetics-between-madecassoside-and-asiaticoside-presented-in-a-standardised-extract-of-centella-asiatica-eca-233-and-their-respective-pure-compound-given-separately-in-rats
#11
Patcharaporn Hengjumrut, Tosapol Anukunwithaya, Mayuree H Tantisira, Boonyong Tantisira, Phisit Khemawoot
1. ECa 233, the standardised extract of Centella asiatica, contains not less than 80% triterpenoid glycosides, in a madecassoside:asiaticoside ratio of 1.5 (±0.5):1. 2. The pharmacokinetic comparison of madecassoside and asiaticoside was performed in rats following intravenous and oral administration of ECa 233, or an equivalent dose of the individual compounds. Blood, tissues, urine and faeces were collected after dosing to determine drug and metabolite levels using liquid chromatography-tandem mass spectrometry...
January 18, 2017: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/27992940/pharmacokinetics-of-a-standardized-extract-of-centella-asiatica-eca-233-in-rats
#12
Tosapol Anukunwithaya, Mayuree H Tantisira, Boonyong Tantisira, Phisit Khemawoot
ECa 233, a standardized extract of Centella asiatica, has been found to exhibit various positive neurological effects and to have a good safety profile. The present study aimed to explore the disposition kinetics of ECa 233, containing madecassoside (53.1 %) and asiaticoside (32.3 %), in rats. The extract was intravenously or orally administered at doses from 50 to 200 mg/kg. Plasma, tissues, urine, and feces were collected at time points from 0 to 48 h after dosing. The levels of madecassoside and asiaticoside, as well as their postulated triterpenic metabolites, madecassic acid and asiatic acid, in biological samples, were simultaneously measured by liquid chromatography-tandem mass spectrometry...
December 19, 2016: Planta Medica
https://www.readbyqxmd.com/read/27955745/asiatic-acid-pectin-hydrogel-matrix-patch-transdermal-delivery-system-influences-parasitaemia-suppression-and-inflammation-reduction-in-p-%C3%A2-berghei-murine-malaria-infected-sprague-dawley-rats
#13
Greanious Alfred Alfrd Mavondo, Musabayane Cephas Tagumirwa
OBJECTIVE: To report the influence of transdermal delivery of asiatic acid (AA) in Plasmodium berghei-infected Sprague Dawley rats on physicochemical changes, %parasitaemia and associated pathophysiology. METHODS: A topical once-off AA (5, 10, and 20 mg/kg)- or chloroquine (CHQ)-pectin patch was applied on the shaven dorsal neck region of Plasmodium berghei-infected Sprague Dawley rats (90-120 g) on day 7 after infection. Eating and drinking habits, weight changes, malaria effects and %parasitaemia were compared among animal groups over 21 d...
December 2016: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/27893605/synergistic-combinations-of-five-single-drugs-from-centella-asiatica-for-neuronal-differentiation
#14
Jinjin Lin, Hui Jiang, Xianting Ding
To identify alternatives of nerve growth factor, which could promote NF68 protein expression and contribute toward neuronal differentiation, five compounds namely: asiatic acid, madecassic, madecassoside, quercetin, and isoquercetin, obtained from Centella asiatica, were examined for their neuronal differentiation effects on PC12 cells. C. asiatica has been applied as an effective herbal medicine for the treatment of various diseases, including depression. According to a statistical design of experiments, both single compound and compound combinations were evaluated...
January 1, 2017: Neuroreport
https://www.readbyqxmd.com/read/27852215/transcriptome-analysis-revealed-the-dynamic-oil-accumulation-in-symplocos-paniculata-fruit
#15
Qiang Liu, Youping Sun, Jinzheng Chen, Peiwang Li, Changzhu Li, Genhua Niu, Lijuan Jiang
BACKGROUND: Symplocos paniculata, asiatic sweetleaf or sapphire berry, is a widespread shrub or small tree from Symplocaceae with high oil content and excellent fatty acid composition in fruit. It has been used as feedstocks for biodiesel and cooking oil production in China. Little transcriptome information is available on the regulatory molecular mechanism of oil accumulation at different fruit development stages. RESULTS: The transcriptome at four different stages of fruit development (10, 80,140, and 170 days after flowering) of S...
November 16, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27779647/asiatic-acid-inhibits-lactate-induced-cardiomyocyte-apoptosis-through-the-regulation-of-the-lactate-signaling-cascade
#16
Changzheng Gao, Fen Wang, Zhiqiang Wang, Jing Zhang, Xiangjun Yang
The lactate signaling cascade has recently been linked to mitochondrial energy metabolism and cardiomyocyte apoptosis in several cardiovascular diseases. Asiatic acid (AA) exhibits a variety of pharmacological effects, including antioxidant and anti-apoptotic effects. In this study, we investigated the protective effects of AA against the lactate-induced apoptosis of cardiomyocytes, as well as its mechanisms of action. Neonatal rat cardiomyocytes were pre-treated with 20 µM AA for 24 h, followed by exposure to 20 mM lactate for a further 24 h...
December 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27762142/synthesis-structural-studies-and-cytotoxic-evaluation-of-novel-ursolic-acid-hybrids-with-capabilities-to-arrest-breast-cancer-cells-in-mitosis
#17
Banita Pattnaik, Jerripothula K Lakshmi, Rachineni Kavitha, Bharatam Jagadeesh, Debanjan Bhattacharjee, Nishant Jain, Uppuluri V Mallavadhani
Some novel chemically modified frameworks of ursolic acid have been designed and synthesized. The key step was the cycloaddition of azidopropyl-3β-hydroxy-urs-12-en-28-oate with the appropriate C28 propargyl esters of ursolic, corosolic, asiatic, oleanolic, and betulinic acid under Click reaction conditions, and the products were obtained in 74-84% yields. In view of their intriguing structural diversity, they have been subjected to detailed 1D and 2D NMR studies and their structures are thoroughly assigned...
March 2017: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/27725350/cardiorespiratory-effects-of-isoflurane-in-asiatic-black-bears-ursus-thibetanus-anesthetized-with-intramuscular-medetomidine-and-zolazepam-tiletamine
#18
Dong-Hyuk Jeong, Jeong-Jin Yang, Seong-Hoon Seok, Dong-Joo Song, Seong-Chan Yeon
The objective of this study was to determine the dose-dependent effects of isoflurane on various cardiovascular parameters and the stable range of isoflurane concentrations in Asiatic black bears (Ursus thibetanus). Seven Asiatic black bears were intramuscularly injected with medetomidine, zolazepam and tiletamine (MZT) to induce anesthesia, and anesthesia was maintained by administering isoflurane in 100% oxygen (4 l/min) without mechanical ventilation. Several cardiovascular parameters were measured at five end-tidal isoflurane concentrations (0...
January 20, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/27703505/computational-approach-for-predicting-the-conserved-b-cell-epitopes-of-hemagglutinin-h7-subtype-influenza-virus
#19
Xiangyu Wang, Qi Sun, Zhonghua Ye, Ying Hua, Na Shao, Yanli Du, Qiwei Zhang, Chengsong Wan
An avian-origin influenza H7N9 virus epidemic occurred in China in 2013-2014, in which >422 infected people suffered from pneumonia, respiratory distress syndrome and septic shock. H7N9 viruses belong to the H7 subtype of avian-origin influenza viruses (AIV-H7). Hemagglutinin (HA) is a vital membrane protein of AIV that has an important role in host recognition and infection. The epitopes of HA are significant determinants of the regularity of epidemic and viral mutation and recombination mechanisms. The present study aimed to predict the conserved B-cell epitopes of AIV-H7 HA using a bioinformatics approach, including the three most effective epitope prediction softwares available online: Artificial Neural Network based B-cell Epitope Prediction (ABCpred), B-cell Epitope Prediction (BepiPred) and Linear B-cell Epitope Prediction (LBtope)...
October 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27647752/resistance-to-citrus-canker-induced-by-a-variant-of-xanthomonas-citri-ssp-citri-is-associated-with-a-hypersensitive-cell-death-response-involving-autophagy-associated-vacuolar-processes
#20
Roxana A Roeschlin, María A Favaro, María A Chiesa, Sergio Alemano, Adrián A Vojnov, Atilio P Castagnaro, María P Filippone, Frederick G Gmitter, José Gadea, María R Marano
Xanthomonas citri ssp. citri (X. citri) is the causal agent of Asiatic citrus canker, a disease that seriously affects most commercially important Citrus species worldwide. We have identified previously a natural variant, X. citri A(T) , that triggers a host-specific defence response in Citrus limon. However, the mechanisms involved in this canker disease resistance are unknown. In this work, the defence response induced by X. citri A(T) was assessed by transcriptomic, physiological and ultrastructural analyses, and the effects on bacterial biofilm formation were monitored in parallel...
September 20, 2016: Molecular Plant Pathology
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