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Planta Medica

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https://www.readbyqxmd.com/read/29791931/effectiveness-of-a-crocus-sativus-extract-on-burn-wounds-in-rats
#1
Esmat Alemzadeh, Ahmad Oryan
Crocus sativus is a spice with various pharmacological properties. Crocin, picrocrocin, and safranal are the main compositions of saffron that have recently been considered in the therapy of many diseases. High-performance liquid chromatography analysis revealed presence of these compounds in our saffron extract. This study was carried out to evaluate the effect of saffron on burn wound healing at an in vivo model. Saffron was topically applied on burn wounds in rats; the percentage of wound closure, wound contraction, and the levels of main cytokines and growth factors were measured...
May 23, 2018: Planta Medica
https://www.readbyqxmd.com/read/29775970/anti-inflammatory-flavanones-and-flavanols-from-the-roots-of-pongamia-pinnata
#2
Ran Wen, Haining Lv, Yong Jiang, Pengfei Tu
A phytochemical study of the roots of Pongamia pinnata afforded 29 flavanones and flavanols, including 7 previously undescribed compounds. The structures of the isolated compounds were determined by 1D and 2D NMR and mass spectroscopy data. The absolute configurations of the compounds were assigned via analysis of the specific rotations and electronic circular dichroism spectra, application of Mosher's method, and by comparing the calculated and experimental electronic circular dichroism spectra. The isolates were evaluated for their inhibitory effects on nitric oxide production in lipopolysaccharide-stimulated BV-2 microglial cells...
May 18, 2018: Planta Medica
https://www.readbyqxmd.com/read/29772587/anti-inflammatory-effects-of-cardamonin-in-ovarian-cancer-cells-are-mediated-via-mtor-suppression
#3
Huajiao Chen, Daohua Shi, Peiguang Niu, Yanting Zhu, Jintuo Zhou
Cardamonin exhibits a variety of pharmacological activities including anti-inflammatory and antitumor, which are correlated with the inhibition of nuclear factor-kappaB and the mammalian target of rapamycin, respectively. However, whether the anti-inflammatory effects of cardamonin are mediated by the mammalian target of rapamycin remains unknown. In this study, ovarian cancer SKOV3 cells were cultured with lipopolysaccharide to induce inflammation, and the inhibitory effects and underlying molecular mechanisms of cardamonin were investigated using specific inhibitors of the mammalian target of rapamycin and the nuclear factor-kappaB pathway (rapamycin and pyrrolidine dithiocarbamate, respectively)...
May 17, 2018: Planta Medica
https://www.readbyqxmd.com/read/29763945/leishmanicidal-effects-of-piperlongumine-piplartine-and-its-putative-metabolites
#4
Fernanda de Lima Moreira, Thalita Bachelli Riul, Marcela de Lima Moreira, Alan Cesar Pilon, Marcelo Dias-Baruffi, Márcio S S Araújo, Norberto Peporine Lopes, Anderson R M de Oliveira
Piperlongumine is an amide alkaloid found in Piperaceae species that shows a broad spectrum of biological properties, including antitumor and antiparasitic activities. Herein, the leishmanicidal effect of piperlongumine and its derivatives produced by a biomimetic model using metalloporphyrins was investigated. The results showed that IC50 values of piperlongumine in promastigote forms of Leishmania infantum and Leishmania amazonensis were 7.9 and 3.3 µM, respectively. The IC50 value of piperlongumine in the intracellular amastigote form of L...
May 15, 2018: Planta Medica
https://www.readbyqxmd.com/read/29763944/baicalin-ameliorates-imiquimod-induced-psoriasis-like-inflammation-in-mice
#5
Chien-Hui Hung, Chien-Neng Wang, Huei-Hsuan Cheng, Jiunn-Wang Liao, Yi-Ting Chen, Ya-Wen Chao, Jia Liang Jiang, Chen-Chen Lee
Baicalin is the main flavonoid from the roots of an important medicinal plant, Scutellaria baicalensis , which shows a variety biological activities. Psoriasis is a chronic immune-mediated inflammatory disease that affects the skin. The unmet need of psoriasis is that many patients do not respond adequately to available clinical treatment. In this study, we found that baicalin showed inhibited dermal inflammation in a murine model of psoriasis via topical application of imiquimod. After a 5-day topical imiquimod application, baicalin or the control vehicle cream was to applied to the lesions of BALB/c mice for a further 4 days...
May 15, 2018: Planta Medica
https://www.readbyqxmd.com/read/29763943/limonoids-from-aphanamixis-polystachya-leaves-and-their-interaction-with-hsp90
#6
César Muñoz Camero, Antonio Vassallo, Marinella De Leo, Abeer Temraz, Nunziatina De Tommasi, Alessandra Braca
A phytochemical study of n -hexane, CHCl3 , and CHCl3 -MeOH extracts of Aphanamixis polystachya leaves led to the isolation of 10 compounds. Five of them turned out to be new natural compounds, including two mexicanolide-type (1, 2: ) and three polyoxyphragmalin-type (3: -5: ) limonoids, together with two known andirobin-type limonoids (6, 7: ) and three phenolic derivatives. The structures of the new compounds were established on the basis of spectroscopic methods to be 8-hydro-14,15-en-cabralin (1: ), 3-deacetyl-8-hydro-cabralin-14,15-en-3-one (2: ), 20,22-dihydroxy-21,23-dimethoxytetrahydrofuran khayanolide A (3: ), 1-deacetyl-3-dehydroxy-3-oxokhaysenelide E (4: ), and meliaphanamixin A (5: )...
May 15, 2018: Planta Medica
https://www.readbyqxmd.com/read/29742762/advantages-of-molecular-weight-identification-during-native-ms-screening
#7
Ahad Khan, Anne Bresnick, Sean Cahill, Mark Girvin, Steve Almo, Ronald Quinn
Native mass spectrometry detection of ligand-protein complexes allowed rapid detection of natural product binders of apo and calcium-bound S100A4 (a member of the metal binding protein S100 family), T cell/transmembrane, immunoglobulin (Ig), and mucin protein 3, and T cell immunoreceptor with Ig and ITIM (immunoreceptor tyrosine-based inhibitory motif) domains precursor protein from extracts and fractions. Based on molecular weight common hits were detected binding to all four proteins. Seven common hits were identified as apigenin 6- C - β - D -glucoside 8- C - α - L -arabinoside, sweroside, 4',5-dihydroxy-7-methoxyflavanone-6- C -rutinoside, loganin acid, 6- C -glucosylnaringenin, biochanin A 7- O -rutinoside and quercetin 3- O -rutinoside...
May 9, 2018: Planta Medica
https://www.readbyqxmd.com/read/29734446/ombuoside-from-gynostemma-pentaphyllum-protects-pc12-cells-from-l-dopa-induced-neurotoxicity
#8
Uchralsaikhan Davaasambuu, Hyun Jin Park, Keun Hong Park, Chong Kil Lee, Bang Yeon Hwang, Myung Koo Lee
This study investigated the effects of ombuoside on L-3,4-dihydroxyphenylalanine (L-DOPA)-induced neurotoxicity in PC12 cells. Ombuoside did not affect cell viability at concentrations of up to 50 µM for 24 h, and ombuoside (1, 5, and 10 µM) significantly inhibited L-DOPA-induced (100 and 200 µM) decreases in cell viability. L-DOPA (100 and 200 µM) induced sustained phosphorylation of extracellular signal-regulated kinases (ERK1/2) for 6 h, which were significantly decreased by cotreatments with ombuoside (1, 5, and 10 µM)...
May 7, 2018: Planta Medica
https://www.readbyqxmd.com/read/29727864/preventive-effects-of-an-uplc-dad-ms-ms-fingerprinted-hydroalcoholic-extract-of-citrus-aurantium-in-a-mouse-model-of-ulcerative-colitis
#9
Youn-Hwan Hwang, Jin Yeul Ma
Although traditionally used to improve indigestion, diarrhea, dysentery, and constipation, the therapeutic effects of Citrus aurantium on intestinal inflammation remain unclear. The aim of this study was to evaluate the beneficial effects and to identify the active components of a hydroalcoholic extract of C. aurantium (HECA) on ulcerative colitis. HECA was prepared with 70% ethanol solution in water and extracted at 37 °C for 12 h in triplicate, filtered through a sieve, and lyophilized. Phytochemical identification of HECA was performed by ultra-performance liquid chromatography-diode array detector-tandem mass spectrometry (UPLC-DAD-MS/MS)...
May 4, 2018: Planta Medica
https://www.readbyqxmd.com/read/29719882/differences-in-neuritogenic-activity-and-signaling-activation-of-madecassoside-asiaticoside-and-their-aglycones-in-neuro-2a-cells
#10
Nonthaneth Nalinratana, Duangdeun Meksuriyen, Boonsri Ongpipattanakul
Madecassoside (MS) and asiaticoside (AS) along with their aglycones, madecassic acid (MA) and asiatic acid (AA), are considered the major neuroactive triterpenoid constituents of Centella asiatica . In this study, we aimed to compare MS, AS, MA, and AA for their neurite outgrowth activities and mechanisms in Neuro-2a cells. Immunofluorescent cell staining showed MS and AS significantly increased the percentage of neurite-bearing cells (%NBC) and the neurite length with higher potency than MA and AA. The triterpenoid glycosides induced sustained extracellular signal-regulated protein kinases 1 and 2 (ERK1/2) phosphorylation, while their aglycones activated only transient signaling of ERK1/2...
May 2, 2018: Planta Medica
https://www.readbyqxmd.com/read/29702722/phosphodiesterase-5-inhibitors-from-derris-scandens
#11
Nattiya Chaichamnong, Prapapan Temkitthawon, Nantaka Khorana, Prompan Pitpakdeeanan, Pornnarin Taepavarapruk, Nitra Nuengchamnong, Yuthana Siriwattanasathien, Apichart Suksamrarn, Kornkanok Ingkaninan
Phosphodiesterase 5 inhibitors have been used as a first-line medicine for the treatment of erectile dysfunction. In the search for new phosphodiesterase 5 inhibitors from natural sources, we found that the 95% ethanol extract of Derris scandens stem showed phosphodiesterase 5 inhibitory activity with an IC50 value of about 7 µg/mL. Seven isoflavones and a coumarin constituent isolated from this plant were investigated for phosphodiesterase 5 inhibitory activity. The results showed that osajin (8: ), 4',5,7-trihydroxybiprenylisoflavone (4: ), and derrisisoflavone A (2: ) had the ability to inhibit phosphodiesterase 5 with IC50 values of 4, 8, and 9 µM, respectively...
April 27, 2018: Planta Medica
https://www.readbyqxmd.com/read/29698984/antiprotozoal-diterpenes-from-perovskia-abrotanoides
#12
Marzieh Tabefam, Mahdi Moridi Farimani, Ombeline Danton, Justine Ramseyer, Marcel Kaiser, Samad N Ebrahimi, Peyman Salehi, Hossien Batooli, Olivier Potterat, Matthias Hamburger
As part of a screening for new antiparasitic natural products from Iranian plants, n -hexane and ethyl acetate extracts from the aerial parts of Perovskia abrotanoides were found to exhibit strong inhibitory activity against Trypanosoma brucei rhodesiense and Leishmania donovani . The activity was tracked by high-performance liquid chromatography (HPLC)-based activity profiling. Preparative isolation by a combination of silica gel column chromatography and HPLC afforded 17 diterpenoids (1: -17: ), including 14 abietane-, two icetexane-, and one isopimarane-type derivatives...
April 26, 2018: Planta Medica
https://www.readbyqxmd.com/read/29689587/three-new-cytotoxic-monoterpenoid-bisindole-alkaloids-from-tabernaemontana-bufalina
#13
Si-Yuan Zhou, Ting-Lan Zhou, Guofu Qiu, Xiajuan Huan, Ze-Hong Miao, Sheng-Ping Yang, Shugeng Cao, Fengkai Fan, You-Sheng Cai
Three new bisindole alkaloids, 3'-(2-oxopropyl)-19,20-dihydrotabernamine (1: ), 3'-(2-oxopropyl)-ervahanine B (2: ), 19,20-dihydrovobparicine (3: ), and 20 known compounds were isolated from the aerial parts of Tabernaemontana bufalina . The structures of these alkaloids were elucidated using spectroscopic methods. The absolute configurations of 1: -3: were determined by the circular dichroic exciton chirality method. Compounds 1: -23: were screened for their cytotoxicity against two human cancer cell lines, A-549 and MCF-7...
April 24, 2018: Planta Medica
https://www.readbyqxmd.com/read/29689586/enhanced-solubility-and-permeability-of-salicis-cortex-extract-by-formulating-as-a-microemulsion
#14
Vieri Piazzini, Elisabetta Bigagli, Cristina Luceri, Anna Rita Bilia, Maria Camilla Bergonzi
A microemulsion system was developed and investigated as a novel oral formulation to increase the solubility and absorption of Salicis cortex extract. This extract possesses many pharmacological activities, in particular, it is beneficial for back pain and osteoarthritic and rheumatic complaints. In this work, after qualitative and quantitative characterization of the extract and the validation of an HPLC/diode array detector analytical method, solubility studies were performed to choose the best components for microemulsion formulation...
April 24, 2018: Planta Medica
https://www.readbyqxmd.com/read/29689585/is-low-field-nmr-a-complementary-tool-to-gc-ms-in-quality-control-of-essential-oils-a-case-study-patchouli-essential-oil
#15
Andre Krause, Yu Wu, Runtao Tian, Teris A van Beek
High-field NMR is an expensive and important quality control technique. In recent years, cheaper and simpler low-field NMR has become available as a new quality control technique. In this study, 60 MHz 1 H-NMR was compared with GC-MS and refractometry for the detection of adulteration of essential oils, taking patchouli essential oil as a test case. Patchouli essential oil is frequently adulterated, even today. In total, 75 genuine patchouli essential oils, 10 commercial patchouli essential oils, 10 other essential oils, 17 adulterants, and 1 patchouli essential oil, spiked at 20% with those adulterants, were measured...
April 24, 2018: Planta Medica
https://www.readbyqxmd.com/read/29672820/a-review-of-the-toxicity-of-compounds-found-in-herbal-dietary-supplements
#16
Amy Hudson, Elizabeth Lopez, Ahmad J Almalki, Amy L Roe, Angela I Calderón
Use of herbal dietary supplements by the public is common and has been happening for centuries. In the United States, the Food and Drug Administration has a limited scope of regulation over marketed herbal dietary supplements, which may contain toxic botanical compounds that pose a public health risk. While the Food and Drug Administration has made efforts to prohibit the sale of unsafe herbal dietary supplements, numerous reports have proliferated of adverse events due to these supplements. This literature review investigates bioactive plant compounds commonly used in herbal dietary supplements and their relative toxicities...
April 19, 2018: Planta Medica
https://www.readbyqxmd.com/read/29672819/isolation-and-determination-of-phenolic-glycosides-and-anthraquinones-from-rhizomes-of-various-reynoutria-species
#17
Izabela Nawrot-Hadzik, Sebastian Granica, Krzysztof Domaradzki, Łukasz Pecio, Adam Matkowski
Giant knotweeds of the genus Reynoutria (syn. Fallopia )- Reynoutria japonica, Reynoutria sachalinensis , and a hybrid of them, Reynoutria x bohemica -are noxious invasive plants in Europe and North America. R. japonica is a traditional East Asian (Japan and China) drug ( Polygoni cuspidati rhizoma ). Recently, it has been included in European Pharmacopoeia as one of the traditional Chinese medicinal herbs. In this study, a reversed-phase high performance liquid chromatography method with diode array detector and time-of-flight mass spectrometry was developed and validated for the profiling of rhizomes from European invasive populations and Polygoni cuspidati rhizoma purchased in China...
April 19, 2018: Planta Medica
https://www.readbyqxmd.com/read/29672818/the-in-vitro-and-in-vivo-effects-of-hypoxis-hemerocallidea-on-indinavir-pharmacokinetics-modulation-of-efflux
#18
Kaylee Havenga, Efrem Abay, Lubbe Wiesner, Alvaro Viljoen, Dewald Steyn, Josias Hamman
Hypoxis hemerocallidea (African potato) is a popular medicinal plant that has been used traditionally for the treatment of various disorders. Some HIV/AIDS patients use this traditional medicine together with their antiretroviral therapy. This study aimed to determine the impact of selected H. hemerocallidea materials (i.e., a commercial product, an aqueous extract, and biomass reference plant material) on the bidirectional permeability of indinavir across Caco-2 cell monolayers as well as the bioavailability of indinavir during an acute, single administration study in Sprague-Dawley rats...
April 19, 2018: Planta Medica
https://www.readbyqxmd.com/read/29660753/crataegus-special-extract-ws-1442-effects-on-enos-and-microrna-155
#19
Xinwen Wang, Yan Liang, Jian Shi, Hao-Jie Zhu, Barry E Bleske
Increased expression of microRNA 155 (miR-155) results in a decrease in endothelial nitric oxide synthase (eNOS) expression and impaired endothelial function. Factors that have been shown to increase expression of miR-155 may be mitigated by WS 1442, an extract of hawthorn leaves and flowers ( Crataegus special extract) that contains a range of pharmacologically active substances including oligomeric proanthocyanidins and flavonoids. The purpose of this study is to determine the effect of WS 1442 on the expression of miR-155 and eNOS in the presence of tumor necrosis factor (TNF- α )...
April 16, 2018: Planta Medica
https://www.readbyqxmd.com/read/29653457/difficulties-in-differentiating-natural-from-synthetic-alkaloids-by-isotope-ratio-monitoring-using-13c-nuclear-magnetic-resonance-spectrometry
#20
Richard J Robins, Katarzyna M Romek, Mathilde Grand, Pierrick Nun, Didier Diomande, Maxime Julien, Gérald S Remaud
Within the food and pharmaceutical industries, there is an increasing legislative requirement for the accurate labeling of the product's origin. A key feature of this is to indicate whether the product is of natural or synthetic origin. With reference to this context, we have investigated three alkaloids commonly exploited for human use: nicotine, atropine, and caffeine. We have measured by 13 C nuclear magnetic resonance spectrometry the position-specific distribution of 13 C at natural abundance within several samples of each of these target molecules...
April 13, 2018: Planta Medica
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