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https://www.readbyqxmd.com/read/27925008/ros-induced-oxidative-stress-in-nobile-type-dendrobium-protocorm-like-bodies-plbs-during-vitrification
#1
M Jia, W Di, Yan Liu, Yin Shi, Y Xie
BACKGROUND: Oxidative stress involved in cryopreservation protocols may be responsible for the poor survival of tissues after cryopreservation. OBJECTIVE: In the current study, we aimed to clarify the role of oxidative stress and its relationship with survival rate during cryopreservation of PLBs from nobile-type Dendrobium. MATERIALS AND METHODS: ROS, antioxidants and oxidative products and the survival rate in PLBs from Dendrobium Hamanal Lake Dream were determined during vitrification...
July 2016: Cryo Letters
https://www.readbyqxmd.com/read/27877182/insights-from-the-cold-transcriptome-and-metabolome-of-dendrobium-officinale-global-reprogramming-of-metabolic-and-gene-regulation-networks-during-cold-acclimation
#2
Zhi-Gang Wu, Wu Jiang, Song-Lin Chen, Nitin Mantri, Zheng-Ming Tao, Cheng-Xi Jiang
Plant cold acclimation (CA) is a genetically complex phenomenon involving gene regulation and expression. Little is known about the cascading pattern of gene regulatroy network and the link between genes and metabolites during CA. Dendrobium officinale (DOKM) is an important medicinal and ornamental plant and hypersensitive to low temperature. Here, we used the large scale metabolomic and transcriptomic technologies to reveal the response to CA in DOKM seedlings based on the physiological profile analyses. Lowering temperature from 4 to -2°C resulted in significant increase (P < 0...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27837285/dendrobium-protoplast-co-culture-promotes-phytochemical-assemblage-in-vitro
#3
Abitha Thomas, Ipsita Pujari, Vasudeep Shetty, Manjunath B Joshi, Padmalatha S Rai, Kapaettu Satyamoorthy, Vidhu Sankar Babu
The present study is intended to analyze the occurrence of potent, low produce, naturally occurring stilbenes in protoplasts of wild species and hybrids of Dendrobium. The wild species selected for the study was Dendrobium ovatum, endemic to Western Ghats of India. Protoplasts were isolated from leaves and tepal tissues of all the species and were cultured purely to generate homofusants and cross-cultured to raise heterofusants. Phytochemical composition of protoplast culture with atypical and pure microcolonies was performed using mass spectrometry...
November 11, 2016: Protoplasma
https://www.readbyqxmd.com/read/27814359/whole-transcriptome-selection-and-evaluation-of-internal-reference-genes-for-expression-analysis-in-protocorm-development-of-dendrobium-officinale-kimura-et-migo
#4
Hongqiang An, Qiankun Zhu, Wei Pei, Jing Fan, Yi Liang, Yihui Cui, Nan Lv, Wanjun Wang
Dendrobium officinale Kimu et Migo has increased many researchers' interest for its high medical and horticultural values and the molecular mechanism of its protocorm development remains unclear. In this study, 19 genes from 26 most stably expressed genes in whole transcriptome of protocorms and 5 housekeeping genes were used as candidate reference genes and screened with 4 application softwares (geNorm, NormFinder, BestKeeper and RefFinder). The results showed that a few reference genes could effectively normalize expression level of specific genes in protocorm development and the optimal top 2 reference genes were ASS and APH1L...
2016: PloS One
https://www.readbyqxmd.com/read/27812785/evaluation-of-the-chemical-quality-of-sekkoku-in-current-japanese-commercial-crude-drugs-constituents-of-flickingeria-xantholeuca-rchb-f-a-d-hawkes
#5
Mei Muto, Haruka Asahina, Tatsufumi Yoshioka, Kazuo Ozaki, Makio Shibano
In our investigation, most Shihu (; Japanese name, Sekkoku) in current Japanese commercial crude drugs were from Flickingeria xantholeuca (Orchidaceae). As the index compounds, three new ent-pimarane-type diterpenes, flickinxthanthosides A-C (1-3), one known analogue (7), and three new ent-kaurane-type diterpenes, flickinxanthosides D (4) and E (5) and flickinxanthol A (6) were isolated from the stem of F. xantholeuca. The structures of the new compounds were elucidated on the basis of spectroscopic analyses and chemical methods...
November 3, 2016: Journal of Natural Medicines
https://www.readbyqxmd.com/read/27802903/dendrobium-officinale-kimura-et-migo-attenuates-diabetic-cardiomyopathy-through-inhibiting-oxidative-stress-inflammation-and-fibrosis-in-streptozotocin-induced-mice
#6
Zhihao Zhang, Duoduo Zhang, Mengmeng Dou, Zhubo Li, Jie Zhang, Xiaoyan Zhao
Dendrobium officinale Kimura et Migo (Dendrobium catenatum Lindley), a prized traditional Chinese Medicine, has been used in China and Southeast Asian countries for centuries. The present study was aimed to investigate the effects and the possible mechanisms of the Dendrobium officinale extracts (DOE) on diabetic cardiomyopathy in mice. The diabetic model was induced by intraperitoneal injection of streptozotocin at the dose of 50mg/kg body weight for 5 consecutive days. After 8 weeks treatment of DOE, mice were sacrificed, blood sample and heart tissues were collected...
October 29, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27798974/four-new-glycosides-from-the-stems-of-dendrobium-fimbriatum-hook
#7
Feng-Qing Xu, Wei-Wei Fan, Cheng-Ting Zi, Fa-Wu Dong, Dan Yang, Jun Zhou, Jiang-Miao Hu
Four new glucosides, named as gigantol-5-O-β-d-glucopyranoside (1), 9,10-dihydro-aphyllone A-5-O-β-d-glucopyranoside (2), ficusal-4-O-β-d-glucopyranoside (3), botrydiol-15-O-β-d-glucopyranoside (4), together with eight known compounds (5-12) were isolated from the n-BuOH extract of the stems of Dendrobium fimbriatum Hook. Their structures were elucidated by the analyses of spectroscopic data.
October 31, 2016: Natural Product Research
https://www.readbyqxmd.com/read/27795255/complete-chloroplast-genome-sequence-of-dendrobium-nobile-from-northeastern-india
#8
Ruchishree Konhar, Devendra Kumar Biswal, Manish Debnath, Sriram Parameswaran, Durai Sundar, Pramod Tandon
The orchid species Dendrobium nobile belonging to the family Orchidaceae and genus Dendrobium (a vast genus that encompasses nearly 1,200 species) has an herbal medicinal history of about 2000 years in east and south Asian countries. Here, we report the complete chloroplast genome sequence of D. nobile from northeastern India for the first time.
October 6, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27748908/cardioprotective-potential-of-dendrobium%C3%A2-officinale-kimura-et-migo-against-myocardial-ischemia-in-mice
#9
Meng-Meng Dou, Zhi-Hao Zhang, Zhu-Bo Li, Jie Zhang, Xiao-Yan Zhao
Dendrobium officinale Kimura et Migo has been used for thousands of years to promote body fluid production; however, little is currently known regarding its effects on the heart. The present study aimed to explore the cardioprotective potential of the water extract of Dendrobium officinale Kimura et Migo (DOE) on myocardial ischemia in mice. A mouse model of myocardial ischemia was induced following ligation of the left anterior descending coronary artery. Prior to the operation, mice were administered a vehicle or DOE for 2 weeks...
September 26, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27729930/acute-toxicity-and-cytotoxicity-evaluation-of-dendrobium-moniliforme-aqueous-extract-in-vivo-and-in-vitro
#10
Mu-Jin Lee, Ho-Kyung Jung, Min-Suk Kim, Ji-Hun Jang, Mi-Ok Sim, Tea-Mook Kim, Ho Park, Byung-Kwan Ahn, Hyun-Woo Cho, Jung-Hee Cho, Won-Seok Jung, Jong-Choon Kim
Dendrobium moniliforme (L.) Sw., an herb of the Orchidaceae family, has long been used in traditional medicine to strengthen bones, nourish the stomach, and promote the production of bodily fluid. Recently, polysaccharides isolated from Dendrobium have been used in functional foods and nutraceutical products. A traditional method to process Dendrobium is to soak fresh stems in an ethanol solution, which is the most important factor to ensure high yields of aqueous-extractable polysaccharides. The present study was carried out to investigate the potential acute toxicity of D...
September 2016: Laboratory Animal Research
https://www.readbyqxmd.com/read/27720924/five-new-lactone-derivatives-from-the-stems-of-dendrobium-nobile
#11
Xue-Ming Zhou, Cai-Juan Zheng, Jia-Ting Wu, Guang-Ying Chen, Jun Chen, Chong-Ge Sun
Five new lactone derivatives decumbic acids A and B (1 and 2), (-)-decumbic acid (3a), (-)- and (+)-dendrolactone (4a and 4b) together with four known compounds (3b and 5-7) were isolated from the stems of Dendrobium nobile. Their structures were elucidated using comprehensive spectroscopic methods. Compounds 3a and 3b, 4a and 4b were isolated as two pair of enantiomers by chiral HPLC. The absolute configurations of 1, 2, 3a, 4a and 4b were determined by optical rotation and X-ray crystallographic analysis...
October 6, 2016: Fitoterapia
https://www.readbyqxmd.com/read/27710025/identification-and-characterization-of-a-chloroplast-targeted-obg-gtpase-in-dendrobium-officinale
#12
Ji Chen, Feng Deng, Mengsheng Deng, Jincheng Han, Jianbin Chen, Li Wang, Shen Yan, Kai Tong, Fan Liu, Mengliang Tian
Bacterial homologous chloroplast-targeted Obg GTPases (ObgCs) belong to the plant-typical Obg group, which is involved in diverse physiological processes during chloroplast development. However, the evolutionarily conserved function of ObgC in plants remains elusive and requires further investigation. In this study, we identified DoObgC from an epiphytic plant Dendrobium officinale and demonstrated the characteristics of DoObgC. Sequence analysis indicated that DoObgC is highly conserved with other plant ObgCs, which contain the chloroplast transit peptide (cTP), Obg fold, G domain, and OCT regions...
December 2016: DNA and Cell Biology
https://www.readbyqxmd.com/read/27702510/the-core-structure-of-a-dendrobium-huoshanense-polysaccharide-required-for-the-inhibition-of-human-lens-epithelial-cell-apoptosis
#13
Xue-Qiang Zha, Yuan-Yuan Deng, Xiao-Long Li, Jing-Fei Wang, Li-Hua Pan, Jian-Ping Luo
The aim of this work was to investigate the core structure of a Dendrobium huoshanense polysaccharide DHPD1 required for the inhibition of lens epithelial cell apoptosis. In order to obtain the fragments containing the core domain, pectinase was employed to hydrolyze DHPD1. After 24h reaction, it is interesting that the hydrolyzation seemed to be stopped, leading to a final enzymatic fragment DHPD1-24 with molecular weight about 1552Da. Compared to DHPD1, although the bioactivity is decreased, DHPD1-24 remained the ability to inhibit the H2O2-induced apoptosis of human lens epithelial (HLE) cells via suppressing the MAPK signaling pathways...
January 2, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/27678303/erianin-inhibits-high-glucose-induced-retinal-angiogenesis-via-blocking-erk1-2-regulated-hif-1%C3%AE-vegf-vegfr2-signaling-pathway
#14
Zengyang Yu, Tianyu Zhang, Chenyuan Gong, Yuchen Sheng, Bin Lu, Lingyu Zhou, Lili Ji, Zhengtao Wang
Erianin is a natural compound found in Dendrobium chrysotoxum Lindl. Diabetic retinopathy (DR) is a serious and common microvascular complication of diabetes. This study aims to investigate the inhibitory mechanism of erianin on retinal neoangiogenesis and its contribution to the amelioration of DR. Erianin blocked high glucose (HG)-induced tube formation and migration in choroid-retinal endothelial RF/6A cells. Erianin inhibited HG-induced vascular endothelial growth factor (VEGF) expression, hypoxia-inducible factor 1-alpha (HIF-1α) translocation into nucleus and ERK1/2 activation in RF/6A and microglia BV-2 cells...
September 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27651818/gigantol-inhibits-epithelial-to-mesenchymal-process-in-human-lung-cancer-cells
#15
Thitita Unahabhokha, Pithi Chanvorachote, Boonchoo Sritularak, Jutarat Kitsongsermthon, Varisa Pongrakhananon
Lung cancer remains a leading public health problem as evidenced by its increasing death rate. The main cause of death in lung cancer patients is cancer metastasis. The metastatic behavior of lung cancer cells becomes enhanced when cancer cells undergo epithelial to mesenchymal transition (EMT). Gigantol, a bibenzyl compound extracted from the Thai orchid, Dendrobium draconis, has been shown to have promising therapeutic potential against cancer cells, which leads to the hypothesis that gigantol may be able to inhibit the fundamental EMT process in cancer cells...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27621524/general-unknown-screening-antioxidant-and-anti-inflammatory-potential-of-dendrobium-macrostachyum-lindl
#16
Nimisha Pulikkal Sukumaran, R Hiranmai Yadav
CONTEXT: D. macrostachyum is an epiphytic orchid abundant in Southern India and is reported for pain relief in folklore. AIMS: The objective of the present study was to determine in vitro free radical scavenging and anti-inflammatory activity of D. macrostachyum and to perform LCMS based metabolic profiling of the plant. SETTINGS AND DESIGN: Sequential stem and leaf extracts were assessed for its antioxidant and anti-inflammatory activity by in vitro methods...
April 2016: Ancient Science of Life
https://www.readbyqxmd.com/read/27612633/moniliformediquinone-as-a-potential-therapeutic-agent-inactivation-of-hepatic-stellate-cell-and-inhibition-of-liver-fibrosis-in-vivo
#17
Tsui-Hwa Tseng, Wea-Lung Lin, Zi-Hui Chen, Yean-Jang Lee, Ming-Shiun Shie, Kam-Fai Lee, Chien-Heng Shen, Hsing-Chun Kuo
BACKGROUND: Moniliformediquinone (MFD), a phenanthradiquinone in Dendrobium moniliforme, was synthesized in our laboratory. Beyond its in vitro inhibitory effects on cancer cells, other biological activity of MFD is unknown. The purpose of the present study was to investigate the effects of MFD on hepatic fibrogenesis in vitro and in vivo. METHODS: Hepatic stellate HSC-T6 was cultured. Cell viability assay and western blot analyses were performed. Male ICR mice were evaluated on CCl4-induced hepatotoxicity using both histological examination and immunohistochemical staining...
September 9, 2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27608952/novel-9-10-dihydrophenanthrene-derivatives-from-eria-bambusifolia-with-cytotoxicity-aganist-human-cancer-cells-in-vitro
#18
Rui Zhan, Zhi-Chong Wang, Ben-Lin Yin, Ying Liu, Ye-Gao Chen
The present study was designed to identify bioactive compounds similar to those isolated from Dendrobium genus from its relative specie Eria bambusifolia. Compounds 1-10 were isolated and purified using silica gel, MCI CHP-20 gel, Sephadex LH-20, and Lichroprep RP-18 chromatography methods. Their structures were elucidated by means of extensive spectroscopic analyses. The cytotoxicity of these compounds against five human cancer cell lines was tested. Erathrins A and B (1 and 2) were new compounds, and compound 1 represented a novel carbon framework having a phenanthrene-phenylpropane unit with a dioxane moiety...
August 2016: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/27461541/effects-of-melatonin-on-colchicine-treated-plbs-of-dendrobium-sonia-28-orchid
#19
M S Lim, J J J Antony, S M Shahinul Islam, Z Suhana, S Sreeramanan
Dendrobium hybrid orchid is popular in orchid commercial industry due to its short life cycle and ability to produce various types of flower colours. This study was conducted to identify the morphological, biochemical and scanning electron microscopy (SEM) analysis in the Dendrobium sonia-28 orchid plants. In this study, 0.05 and 0.075 % of colchicine-treated Dendrobium sonia-28 (4-week-old culture) protocorm-like bodies (PLBs) were treated in different concentrations of melatonin (MEL) posttreatments (0, 0...
July 26, 2016: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/27429889/element-tracing-of-mineral-matters-in-dendrobium-officinale-using-icp-ms-and-multivariate-analysis
#20
Nannan Zhu, Shen Han, Chunning Yang, Jixu Qu, Zhirong Sun, Wenjie Liu, Xiaomin Zhang
Rare studies have been performed to trace the mineral elements in Dendrobium officinale. In this study, we aim to trace the mineral elements in D. officinale collected from ten geographical locations in China. ICP-MS system was used for simultaneous determination of mineral elements. Principal component analysis was performed using the obtained data in the quantification of mineral contents. Cluster analysis was performed using the Ward's method. Several of essential microelments were detected in D. officinale, including ferrum (Fe), manganese (Mn), zinc (Zn), chromium (Cr), nickel (Ni) and vanadium (V)...
2016: SpringerPlus
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