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Planta Medica

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https://www.readbyqxmd.com/read/28938496/icaritin-improves-antibody-induced-thrombocytopenia-in-a-mouse-model-by-regulating-t-cell-polarization
#1
Chenghong Sun, Jian Yang, Mingzhi Wang, Lihong Pan, Jingchun Yao, Shenglan Wang, Na Guo, Chunyan Li, Guimin Zhang
Previous studies have shown that icaritin (ICT) has significant protective effects on immune thrombocytopenia (ITP), and the present study aimed to discuss the mechanism of this protective effect from the aspect of regulating T-cell polarization by an antibody-induced ITP mice model. Mice were given rat anti-mouse CD41 antibody (MWReg30) by intraperitoneal injection for 7 d to produce ITP model. At the same time, ICT was administrated at 10 mg/kg/d orally for 9 d. Peripheral blood platelets were counted by hematology analyzer...
September 22, 2017: Planta Medica
https://www.readbyqxmd.com/read/28938495/polyphenol-enriched-fractions-of-cyclopia-intermedia-selectively-affect-lipogenesis-and-lipolysis-in-3t3-l1-adipocytes
#2
Babalwa U Jack, Christiaan J Malherbe, Elize L Willenburg, Dalene de Beer, Barbara Huisamen, Elizabeth Joubert, Christo J F Muller, Johan Louw, Carmen Pheiffer
Cyclopia species are increasingly investigated as sources of phenolic compounds with potential as therapeutic agents. Recently, we demonstrated that a crude polyphenol-enriched organic fraction (CPEF) of Cyclopia intermedia, currently forming the bulk of commercial production, decreased lipid content in 3T3-L1 adipocytes and inhibited body weight gain in obese db/db mice. The aim of the present study was to determine whether a more effective product and/or one with higher specificity could be obtained by fractionation of the CPEF by purposely increasing xanthone and benzophenone levels...
September 22, 2017: Planta Medica
https://www.readbyqxmd.com/read/28938494/supercritical-fluid-chromatography-in-natural-product-analysis-an-update
#3
Nora Gibitz Eisath, Sonja Sturm, Hermann Stuppner
The wide chemical diversity of natural products has challenged analysts all over the world and has been a driving force for the development of innovative technologies since decades. In the last years, supercritical fluid chromatography (SFC) has finally emerged from the shadow of liquid chromatography (LC) and gas chromatography (GC) and has become a powerful tool in modern natural product analysis. Whereas in the past the technique had mainly been restricted to a small group of nonpolar compounds, it has largely expanded its suitability in the last years and has demonstrated possibilities without boundaries...
September 22, 2017: Planta Medica
https://www.readbyqxmd.com/read/28926863/evaluation-of-cannabinoid-and-terpenoid-content-cannabis-flower-compared-to-supercritical-co2-concentrate
#4
Michelle Sexton, Kyle Shelton, Pam Haley, Mike West
A recent cannabis use survey revealed that 60% of cannabis users rely on smelling the flower to select their cannabis. Olfactory indicators in plants include volatile compounds, principally represented by the terpenoid fraction. Currently, medicinal- and adult-use cannabis is marketed in the United States with relatively little differentiation between products other than by a common name, association with a species type, and Δ-9 tetrahydrocannabinol/cannabidiol potency. Because of this practice, how terpenoid compositions may change during an extraction process is widely overlooked...
September 19, 2017: Planta Medica
https://www.readbyqxmd.com/read/28926862/comparison-of-the-morphology-anatomy-and-chemical-profile-of-mikania-glomerata-and-mikania-laevigata
#5
Vanessa Cruz de Oliveira Costa, Alexandre Augusto Borghi, Juliana Lischka Sampaio Mayer, Alexandra Christine Helena Frankland Sawaya
Mikania glomerata and Mikania laevigata are medicinal plants popularly used in Brazil for colds and asthma. Although several studies report differences in their composition, they are frequently used indistinctly, which may be due to misidentification of the species or the plant part used. Herein, the chemical, anatomical, and morphological profiles of both species were evaluated, seeking to differentiate them. Due to the pattern of secondary metabolites found in M. glomerata and M. laevigata, the chemical profile of the leaves was the characteristic that best differentiated the two species...
September 19, 2017: Planta Medica
https://www.readbyqxmd.com/read/28902374/bupleurum-chinense-roots-a-bioactivity-guided-approach-toward-saponin-type-nf-%C3%AE%C2%BAb-inhibitors
#6
Xin Liu, Simone Latkolik, Atanas G Atanasov, Olaf Kunert, Eva-Maria Pferschy-Wenzig, Elke H Heiss, Clemens Malainer, Andreas Schinkovitz, Manfred Kollroser, Verena M Dirsch, Rudolf Bauer
The roots of Bupleurum chinense have a long history in traditional medicine to treat infectious diseases and inflammatory disorders. Two major compounds, saikosaponins A and D, were reported to exert potent anti-inflammatory activity by inhibiting NF-κB. In the present study, we isolated new saikosaponin analogues from the roots of B. chinese interfering with NF-κB activity in vitro. The methanol-soluble fraction of the dichloromethane extract of Radix Bupleuri was subjected to activity-guided isolation yielding 18 compounds, including triterpenoids and polyacetylenes...
September 8, 2017: Planta Medica
https://www.readbyqxmd.com/read/28877539/liquid-and-vapor-phase-activity-of-artemisia-annua-essential-oil-against-pathogenic-malassezia-spp
#7
Francesca Santomauro, Rosa Donato, Gabriella Pini, Cristiana Sacco, Roberta Ascrizzi, Anna Rita Bilia
Artemisia annua essential oil has given us many encouraging results for its numerous antimicrobial properties. In this study, the essential oil, both in liquid and in vapor phases, was tested against various Malassezia species closely related to many skin disorders in humans and animals. Malassezia treatment and eradication are mainly based on old azole drugs, which are characterized by poor compliance, unpredictable clinical efficacy, emerging resistance, and several side effects. Monoterpenes (ca. 88%) represent the most abundant group of compounds in the essential oil, mainly the oxygenated derivatives (ca...
September 6, 2017: Planta Medica
https://www.readbyqxmd.com/read/28859216/evaluating-the-multitarget-effects-of-combinations-through-multistep-clustering-of-pharmacological-data-the-example-of-the-commercial-preparation-iberogast
#8
Heba Abdel-Aziz, Olaf Kelber, Gerhard Lorkowski, Martin Storr
Herbal combination preparations are widely used in traditional herbal medicine and are even established as modern evidence-based herbal medicinal products. The rationale behind such combinations is often questioned and assessing the contribution of each of the combination partners to overall activity is challenging. STW 5 (Iberogast) is such a combination with confirmed clinical efficacy in functional gastrointestinal disorders. It consists of nine plant extracts responsible for its multitarget function in these multifactorial diseases with their heterogeneous and overlapping pathomechanisms...
August 31, 2017: Planta Medica
https://www.readbyqxmd.com/read/28859215/1-acetoxychavicol-acetate-increases-proteasome-activity-by-activating-camp-pka-signaling
#9
Keisuke Yaku, Isao Matsui-Yuasa, Akiko Kojima-Yuasa
Protein degradation systems are critical pathways for the maintenance of protein homeostasis. The age-dependent attenuation of the proteasome activity contributes to age-related neurodegenerative processes. The molecule 1'-acetoxychavicol acetate (ACA) is naturally obtained from the rhizomes and seeds of Zingiberaceae plants, such as Languas galangal and Alpinia galangal, and exhibits anti-carcinogenic effects. Recently, we have shown that ACA protected the age-related learning and memory impairments in senescence-accelerated mice and maintained cognitive performance...
August 31, 2017: Planta Medica
https://www.readbyqxmd.com/read/28850958/quality-standards-for-herbal-drugs-and-herbal-drug-preparations-appropriate-or-improvements-necessary
#10
Reinhard Länger, Erich Stöger, Wolfgang Kubelka, Keith Helliwell
Standards for quality control as defined in the European Pharmacopoeia contribute significantly to a consistent and high quality of herbal drugs, herbal drug preparations, and herbal medicinal products. The minimum content of single plant constituents is considered of high relevance. Therefore, nearly all monographs on herbal drugs or herbal drug preparations contain an obligatory assay.However, a critical evaluation of the data published for such assayed constituents reveals that in most cases these constituents have to be considered as purely analytical markers without correlation to quality or efficacy...
August 29, 2017: Planta Medica
https://www.readbyqxmd.com/read/28847019/metabolomic-guided-isolation-of-bioactive-natural-products-from-curvularia-sp-an-endophytic-fungus-of-terminalia-laxiflora
#11
Ahmed F Tawfike, Grainne Abbott, Louise Young, RuAngelie Edrada-Ebel
Endophytic fungi associated with medicinal plants are a potential source of novel chemistry and biology. Metabolomic tools were successfully employed to compare the metabolite fingerprints of solid and liquid culture extracts of endophyte Curvularia sp. isolated from the leaves of Terminalia laxiflora. Natural product databases were used to dereplicate metabolites in order to determine known compounds and the presence of new natural products. Multivariate analysis highlighted the putative metabolites responsible for the bioactivity of the fungal extract and its fractions on NF-κB and the myelogenous leukemia cell line K562...
August 28, 2017: Planta Medica
https://www.readbyqxmd.com/read/28847018/erratum-terpenoids-from-the-oleo-gum-resin-of-boswellia-serrata-and-their-antiplasmodial-effects-in-vitro
#12
Hippolyt L Greve, Marcel Kaiser, Reto Brun, Thomas J Schmidt
No abstract text is available yet for this article.
August 28, 2017: Planta Medica
https://www.readbyqxmd.com/read/28841738/aucubin-protects-against-tgf%C3%AE-1-induced-cardiac-fibroblasts-activation-by-mediating-the-ampk%C3%AE-mtor-signaling-pathway
#13
Yang Xiao, Wei Chang, Qing-Qing Wu, Xiao-Han Jiang, Ming-Xia Duan, Ya-Ge Jin, Qi-Zhu Tang
Fibrosis is a key feature of various cardiovascular diseases and compromises cardiac systolic and diastolic performance. The lack of effective anti-fibrosis drugs is a major contributor to the increasing prevalence of heart failure. The present study was performed to investigate whether the iridoid aucubin alleviates cardiac fibroblast activation and its underlying mechanisms. Neonatal rat cardiac fibroblasts were incubated with aucubin (1, 10, 20, 50 µM) followed by transforming growth factor β1 (TGFβ1, 10 ng/mL) stimulation for 24 h...
August 25, 2017: Planta Medica
https://www.readbyqxmd.com/read/28837995/microscopic-and-phytochemical-comparison-of-the-three-leonurus-species-l-%C3%A2-cardiaca-l-%C3%A2-japonicus-and-l-%C3%A2-sibiricus
#14
Anna Pitschmann, Christine Waschulin, Christina Sykora, Sodnomtseren Purevsuren, Sabine Glasl
At least three Leonurus species, Leonurus cardiaca, Leonurus japonicus, and Leonurus sibiricus, are used in various traditional medicinal systems for different therapeutic purposes. The plant names "L. sibiricus" and "L. japonicus" are often used as synonyms, which causes confusion in literature and implies that several studies may be based on improperly identified plant material. To avoid further confusion, the current status of the identification of these three species is illustrated. Characteristics for their unequivocal identification are presented using stereo and light microscopy as well as HPTLC...
August 24, 2017: Planta Medica
https://www.readbyqxmd.com/read/28817840/nuciferine-relaxes-tracheal-rings-via-the-blockade-of-vdlcc-and-nscc-channels
#15
Xiao Yang, Meng-Fei Yu, Jun Lei, Yong-Bo Peng, Ping Zhao, Lu Xue, Weiwei Chen, Li-Qun Ma, Qing-Hua Liu, Jinhua Shen
This study aimed to elucidate the mechanisms of nuciferine (a main aporphine alkaloid of lotus leaf extract), which can induce relaxation in contracted tracheal rings. Under Ca(2+)-free and 2 mM Ca(2+) conditions, we found that nuciferine had no effect on the resting muscle tone of tracheal rings. In contrast, nuciferine relaxed high K(+)-contracted mouse tracheal rings in a dose-dependent manner and inhibited both Ca(2+) influx and voltage-dependent L-type Ca(2+) channel currents induced by high K(+). Similarly, nuciferine also inhibited acetylcholine-induced contractions in mouse tracheal rings in a dose-dependent manner...
August 17, 2017: Planta Medica
https://www.readbyqxmd.com/read/28800661/cytotoxic-flavones-from-the-stem-bark-of-bougainvillea-spectabilis-willd
#16
Lien T M Do, Thammarat Aree, Pongpun Siripong, Nga T Vo, Tuyet T A Nguyen, Phung K P Nguyen, Santi Tip-Pyang
Five new flavones possessing a fully substituted A-ring with C-6 and C-8 methyl groups, bougainvinones I - M (1-5), along with three known congeners, 2'-hydroxydemethoxymatteucinol (6), 5,7,3',4'-tetrahydroxy-3-methoxy-6,8-dimethylflavone (7) and 5,7,4'-trihydroxy-3-methoxy-6,8-dimethylflavone (8), were isolated from the EtOAc extract of the stem bark of Bougainvillea spectabilis. Their structures were established by means of spectroscopic data (ultraviolet, infrared, high-resolution electrospray ionization mass spectrometry, and one-dimensional and two-dimensional nuclear magnetic resonance) and single-crystal X-ray crystallographic analysis...
August 11, 2017: Planta Medica
https://www.readbyqxmd.com/read/28793356/potential-anti-inflammatory-sesquiterpene-lactones-from-eupatorium-lindleyanum
#17
Fang Wang, Huanhuan Zhong, Shiqi Fang, Yunfeng Zheng, Cunyu Li, Guoping Peng, Xinchun Shen
Eupatorium lindleyanum has traditionally been used as folk medicine in Asian countries for its therapeutic effects on tracheitis and tonsillitis. Investigation of the anti-inflammatory active constituents from E. lindleyanum led to the isolation of two novel sesquiterpene lactones, named eupalinolide L (1) and eupalinolide M (2), and seven known sesquiterpene lactones (3-9). The structures and configurations of the new compounds were determined on the basis of spectroscopic analysis, especially 2D NMR techniques...
August 9, 2017: Planta Medica
https://www.readbyqxmd.com/read/28793355/effects-of-cannabidiol-on-morphine-conditioned-place-preference-in-mice
#18
James Roland Markos, Hannah M Harris, Waseem Gul, Mahmoud A ElSohly, Kenneth J Sufka
This study sought to determine whether the cannabis constituent cannabidiol attenuates the development of morphine reward in the conditioned place preference paradigm. Separate groups of mice received either saline or morphine in combination with one of four doses of cannabidiol using three sets of drug/no-drug conditioning trials. After drug-place conditioning, morphine mice displayed robust place preference that was attenuated by 10 mg/kg cannabidiol. Further, when administered alone, this dose of cannabidiol was void of rewarding and aversive properties...
August 9, 2017: Planta Medica
https://www.readbyqxmd.com/read/28772334/myocardial-glucose-clearance-by-aspalathin-treatment-in-young-mature-and-obese-insulin-resistant-rats
#19
Sybrand Engelbrecht Smit, Rabia Johnson, Mignon Alberta Van Vuuren, Barbara Huisamen
Rooibos, an indigenous South African plant ingested as herbal tea, is well known for its antioxidant effects. This in vitro study investigated aspalathin (C21H24O11), a dihydrochalcone unique to rooibos, for hypoglycemic effects in the context of age- and obesity-induced insulin resistance and the mechanisms involved. Male Wistar rats were allocated into three groups: 16 - 30 weeks feeding with either standard rat chow or a high-caloric diet, or 6 - 10 weeks feeding with standard rat chow. Ventricular cardiomyocytes were isolated by collagenase perfusion digestion, and glucose uptake was determined by 2-[(3)H]-deoxyglucose accumulation...
August 3, 2017: Planta Medica
https://www.readbyqxmd.com/read/28770552/extracts-of-terminalia-sericea-enhance-cell-migratory-activity-of-endothelial-hybrid-and-fibroblast-cells-in-vitro
#20
Hafiza Parkar, Olayinka Ayobami Aiyegoro, Paul Steenkamp, Vanessa Steenkamp
Terminalia sericea is a plant that has been used amongst others medicinally to treat wounds. The aim of this study was to assess the in vitro wound healing ability of T. sericea. Hot water, methanol, ethyl acetate, and hexane extracts were prepared. Thin layer chromatography (TLC) and ultra-performance liquid chromatography time of flight mass spectrometry (UPLC-TOF-MS) were used to determine the phytochemical classes and genus specific compounds present in the plant. Cytotoxicity was assessed in the SC-1 fibroblast and EA...
August 2, 2017: Planta Medica
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