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https://www.readbyqxmd.com/read/28224196/calcium-and-oxidative-stress-mediate-perillaldehyde-induced-apoptosis-in-candida-albicans
#1
Hui Tian, Su Qu, Yanzhen Wang, Zhaoqun Lu, Man Zhang, Yeyun Gan, Peng Zhang, Jun Tian
New anti-Candida albicans drugs are needed due to the emergence of resistant cases in recent years. Perillaldehyde (PAE) is a natural monoterpenoid compound derived from Perilla frutescens. The minimum inhibitory concentration of PAE against C. albicans was 0.4 μL/mL. We aimed to elucidate the antifungal mode of action of PAE against C. albicans. The antifungal activity of PAE against C. albicans was found to correlate with an elevation in intracellular Ca(2+) and accumulation of ROS. Several downstream apoptosis events such as the disruption of mitochondrial membrane potential, phosphatidylserine externalization, cytochrome c release, and metacaspase activation were observed in PAE-treated cells...
February 21, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28218690/comparison-of-the-anti-inflammatory-activities-of-supercritical-carbon-dioxide-versus-ethanol-extracts-from-leaves-of-perilla-frutescens-britt-radiation-mutant
#2
Chang Hyun Jin, Han Chul Park, Yangkang So, Bomi Nam, Sung Nim Han, Jin-Baek Kim
In this study, we aimed to compare supercritical carbon dioxide extraction and ethanol extraction for isoegomaketone (IK) content in perilla leaf extracts and to identify the optimal method. We measured the IK concentration using HPLC and inflammatory mediators in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells from the extracts. The IK concentration was 10-fold higher in perilla leaf extracts by supercritical carbon dioxide extraction (SFE) compared with that in perilla leaf extracts by ethanol extraction (EE)...
February 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28208640/rapid-high-performance-liquid-chromatography-determination-and-optimization-of-extraction-parameters-of-the-%C3%AE-asarone-isolated-from-perilla-frutescens-l
#3
Seung Hwan Hwang, Shin Hwa Kwon, Young-Hee Kang, Jae-Yong Lee, Soon Sung Lim
Response surface methodology (RSM), based on a central composite design, was used to determine the best liquid-to-raw material ratio (10:3-15 mL/g), extraction time (1-3 h), and ethanol concentration (50%-100%) for maximum content of α-asarone from Perilla frutescens (PF) extract. Experimental values of α-asarone were 9.51-46.36 mg/g; the results fitted a second-order quadratic polynomial model and correlated with the proposed model (R2 > 0.9354). The best conditions were obtained with extraction time of 1...
February 10, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28192760/competitive-binding-experiments-can-reduce-the-false-positive-results-of-affinity-based-ultrafiltration-hplc-a-case-study-for-identification-of-potent-xanthine-oxidase-inhibitors-from-perilla-frutescens-extract
#4
Zhiqiang Wang, Shin Hwa Kwon, Seung Hwan Hwang, Young-Hee Kang, Jae-Yong Lee, Soon Sung Lim
The purpose of this study was to assess the possibility of using competitive binding experiments with ultrafiltration-HPLC analysis to identify potent xanthine oxidase (XO) inhibitors from the Perilla frutescens extract as an attempt to reduce the number of false positive results. To isolate the enzyme-ligand complex from unbound compounds, the P. frutescens extract was either incubated in the absence of XO, in the presence of XO, or with the active site blocked XO before the ultrafiltration was performed. Allopurinaol was used as the XO active site blocker...
February 6, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28181439/cryoem-structure-refinement-by-integrating-nmr-chemical-shifts-with-molecular-dynamics-simulations
#5
Juan R Perilla, Gongpu Zhao, Manman Lu, Jiying Ning, Guangjin Hou, In-Ja L Byeon, Angela M Gronenborn, Tatyana Polenova, Peijun Zhang
Single particle cryoEM has emerged as a powerful method for structure determination of proteins and complexes, complementing X-ray crystallography and NMR spectroscopy. Yet, for many systems, the resolution of cryoEM density map has been limited to 4-6 Å, which only allows for resolving bulky amino acids side chains, thus hindering accurate model building from the density map. On the other hand, experimental chemical shifts (CS) from solution and solid state MAS NMR spectra provide atomic level data for each amino acid within a molecule or a complex; however, structure determination of large complexes and assemblies based on NMR data alone remains challenging...
February 9, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28167258/protective-effect-of-nrf2-are-activator-isolated-from-green-perilla-leaves-on-dopaminergic-neuronal-loss-in-a-parkinson-s-disease-model
#6
Yuta Masaki, Yasuhiko Izumi, Atsuko Matsumura, Akinori Akaike, Toshiaki Kume
Parkinson's disease (PD) is a neurodegenerative disorder characterized by a selective loss of dopaminergic neurons in the substantia nigra (SN), and oxidative stress is thought to contribute to the pathogenesis. The nuclear factor erythroid 2-related factor 2 (Nrf2)-antioxidant response element (ARE) pathway, which is a cellular defense system against oxidative stress, is a promising target for therapeutics aimed at reducing neuronal death in PD. Previously, we have isolated 2',3'-dihydroxy-4',6'-dimethoxychalcone (DDC) from green perilla leaves as an activator of the Nrf2-ARE pathway...
February 4, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28149172/yield-size-nutritional-value-and-antioxidant-activity-of-oyster-mushrooms-grown-on-perilla-stalks
#7
Huizhen Li, Zhijun Zhang, Mengxue Li, Xiaojun Li, Ziwen Sun
Perilla is an edible medical plant with rapidly increasing acreage in China. In this study, we investigated the potential of perilla stalks (PSs) as an alternative substrate for the cultivation of oyster mushrooms (Pleurotus ostreatus). P. ostreatus was cultivated on cottonseed hulls (CSH) alone or mixed with PSs in different ratios. The production parameters, physical characteristics, nutritional values, and antioxidant activity of mushrooms cultivated on different substrate mixtures were determined. The addition of PSs to CSH significantly improved the growth rate, yield, biological efficiency, and proximate composition and shortened the cultivation cycle...
February 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28124802/the-interventional-relationship-between-frequent-fish-consumption-and-depression-symptoms-in-aging-adults-a-randomized-controlled-trial
#8
Payam Sharifan, Motahare-Sadat Hosseini, Anoosheh Sharifan
OBJECTIVE: The present investigation was intended to test the hypothesis that the elderly provided with the frequent consumption of fishes marinated in essential oil of Perilla frutescens (EOPF) or not would experience fewer depressive symptoms after 6 months. METHODS: A total of 180 participants were recruited from Sina Hospital, Mashhad, Iran, who were diagnosed with depression based on Diagnostic and Statistical Manual of Mental Disorders, 4th edition, Text Revision and Beck Depression Inventory...
January 26, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28111448/effects-of-simultaneous-supplementation-of-laying-hen-with-%C3%AE-linolenic-acid-and-eicosapentaenoic-acid-docosahexaenoic-acid-resources-on-egg-quality-and-n-3-fatty-acid-profile
#9
Pingping Zhang, Chuanqiu Tang, Hui Huang, Zongqing Ding, Yong Sun
Objective: The aim of this study was to investigate the effects of simultaneous supplementation of laying hen with a-linolenic acid (ALA) resources (flax, perilla and Eucommia ulmoides seeds) and eicosapentaenoic acid/docosahexaenoic acid (EPA/DHA) resources (Schizochytrium sp.) on egg quality and n-3 polyunsaturated fatty acids (PUFA) profile. Methods: Dietary treatments were as follows: i) diet C (control diet); ii) diet F( diet C+ 10% flaxseeds ); ⅲ) diet P, (diet C + 10% perilla seeds); ⅳ) diet E (diet C+ 10% Eucommia ulmoides seeds); ⅴ) diet A (diet C + 1...
December 27, 2016: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28088783/%C3%AE-asarone-blocks-7%C3%AE-hydroxycholesterol-exposed-macrophage-injury-through-blocking-elf2%C3%AE-phosphorylation-and-prompting-beclin-1-dependent-autophagy
#10
Sin-Hye Park, Min-Kyung Kang, Yean-Jung Choi, Yun-Ho Kim, Lucia Dwi Antika, Dong Yeon Kim, Eun-Jung Lee, Soon Sung Lim, Young-Hee Kang
Macrophage apoptosis is salient in advanced atherosclerotic lesions and is induced by several stimuli including endoplasmic reticulum (ER) stress. This study examined that α-asarone present in purple perilla abrogated macrophage injury caused by oxysterols via ER stress- and autophagy-mediated mechanisms. Nontoxic α-asarone at 1-20 μM attenuated 7β-hydroxycholesterol-induced activation of eukaryotic initiation factor 2α in macrophages leading to C/EBP homologous protein (CHOP) expression and apoptosis due to sustained ER stress...
January 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28073960/ligand-characterization-of-cyp4b1-isoforms-modified-for-high-level-expression-in-escherichia-coli-and-hepg2-cells
#11
Katharina Roellecke, Vera D Jäger, Veselin H Gyurov, John P Kowalski, Stephanie Mielke, Allan E Rettie, Helmut Hanenberg, Constanze Wiek, Marco Girhard
Human CYP4B1, a cytochrome P450 monooxygenase predominantly expressed in the lung, inefficiently metabolizes classical CYP4B1 substrates, such as the naturally occurring furan pro-toxin 4-ipomeanol (4-IPO). Highly active animal forms of the enzyme convert 4-IPO to reactive alkylating metabolite(s) that bind(s) to cellular macromolecules. By substitution of 13 amino acids, we restored the enzymatic activity of human CYP4B1 toward 4-IPO and this modified cDNA is potentially valuable as a suicide gene for adoptive T-cell therapies...
January 10, 2017: Protein Engineering, Design & Selection: PEDS
https://www.readbyqxmd.com/read/27986566/a-flavanone-derivative-from-the-asian-medicinal-herb-perilla-frutescens-potently-suppresses-ige-mediated-immediate-hypersensitivity-reactions
#12
Rikiya Kamei, Takashi Fujimura, Miki Matsuda, Kotaro Kakihara, Noriko Hirakawa, Kenji Baba, Kazuhisa Ono, Kenji Arakawa, Seiji Kawamoto
Perilla frutescens is a dietary leafy herb consumed as a traditional Japanese condiment as well as used for Chinese medicine with anti-inflammatory activity. Here we report a hitherto-unrecognized P. frutescens phytochemical that potently suppresses IgE-mediated type I hypersensitivity reactions. Structural analysis reveals that the purified anti-allergic compound (Perilla-derived methoxyflavanone, PDMF) is identified as 8-hydroxy-5,7-dimethoxyflavanone. PDMF significantly inhibits IgE-mediated histamine release from RBL-2H3 rat basophilic leukemia cells as compared with those seen in known P...
January 29, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27976251/determination-of-fatty-acids-from-perilla-cultivars-and-edible-oils-by-gc-fid
#13
J Lee, S Cho, J P Rodriguez, K H Lee, T Jin, M H Lee, E J Cho, S Lee
No abstract text is available yet for this article.
December 2016: Planta Medica
https://www.readbyqxmd.com/read/27975746/neuroprotective-effect-of-perilla-extracts-on-pc12-cells
#14
P Senavong, S Kongkham, S Saelim, V Suangkavathin
No abstract text is available yet for this article.
December 2016: Planta Medica
https://www.readbyqxmd.com/read/27975407/simultaneous-determination-of-phytochemicals-from-the-seeds-of-perilla-cultivars
#15
J Lee, S Cho, J P Rodriguez, K H Lee, T Jin, M H Lee, E J Cho, S Lee
No abstract text is available yet for this article.
December 2016: Planta Medica
https://www.readbyqxmd.com/read/27958644/effect-of-perilla-frutescens-extracts-on-porcine-jejunal-epithelial-cells
#16
Christine M Kaufmann, Thomas Letzel, Johanna Grassmann, Michael W Pfaffl
Green-leaved Perilla frutescens extracts were investigated on their effect on cell proliferation of the porcine jejunal epithelial cell line, IPEC-J2, as well as on the gene expression of cell cycle or cancer-related genes. Some extracted compounds were, however, susceptible to degradation in cell culture medium, whereas others were found to be stable during the entire experimental time. Control experiments also included the assessment of H2 O2 generation in cell culture medium caused by oxidation of natural extract compounds, which was proved to be absent at low extract concentrations...
February 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/27890582/molecular-cloning-and-characterization-of-a-perilla-frutescens-cytochrome-p450-enzyme-that-catalyzes-the-later-steps-of-perillaldehyde-biosynthesis
#17
Yumi Fujiwara, Michiho Ito
Perilla produces the cyclohexanoid monoterpene perillaldehyde as a major constituent of an essential oil that is accumulated in its glandular trichomes. Perillaldehyde is a marker compound for quality control of soyo and has biological activities such as antibacterial, sedative, or vasodilatory effects. The predicted perillaldehyde formation involves the cyclization of geranyl diphosphate, hydroxylation, and oxidation, and cytochrome P450 plays a crucial role in perillaldehyde biosynthesis. In this study, a cytochrome P450-type enzyme with perillyl alcohol and perillaldehyde synthase activities was isolated by analyzing an expressed sequence tag library from several oil types of pure lines of perilla...
February 2017: Phytochemistry
https://www.readbyqxmd.com/read/27890564/phytochemical-and-phytopharmacological-review-of-perilla-frutescens-l-labiatae-a-traditional-edible-medicinal-herb-in-china
#18
Hua Yu, Jian-Feng Qiu, Li-Juan Ma, Yuan-Jia Hu, Peng Li, Jian-Bo Wan
Perilla frutescens (L.) Britt., a worldwide distributed plant, is an important economic crop and with a long cultivation history in China as well as some other countries in Asia. Except for the edible applications, the plant of P. frutescens is also traditionally used as a medicinal herb in China for thousands years. The leaves, seeds and stems of P. frutescens are recommended by the Chinese Pharmacopeia as three medicinal materials for various therapeutic applications. In the past decades, amount investigations have been done about different aspects for P...
November 24, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27888134/perilla-frutescens-leaves-extract-ameliorates-ultraviolet-radiation-induced-extracellular-matrix-damage-in-human-dermal-fibroblasts-and-hairless-mice-skin
#19
Jung-Soo Bae, Mira Han, Hee Soon Shin, Min-Kyoung Kim, Chang-Yup Shin, Dong Hun Lee, Jin Ho Chung
ETHNOPHARMACOLOGICAL RELEVANCE: Perilla frutescens (L.) Britt. (Lamiaceae) is a traditional herb that is consumed in East Asian countries as a traditional medicine. This traditional herb has been documented for centuries to treat various diseases such as depression, allergies, inflammation and asthma. However, the effect of Perilla frutescens on skin has not been characterized well. AIM OF THE STUDY: The present study aimed to investigate the effect of Perilla frutescens leaves extract (PLE) on ultraviolet radiation-induced extracellular matrix damage in human dermal fibroblasts and hairless mice skin...
January 4, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27842727/minimization-of-diauxic-growth-lag-phase-for-high-efficiency-biogas-production
#20
Min Jee Kim, Sang Hun Kim
The objective of this study was to develop a minimization method of a diauxic growth lag-phase for the biogas production from agricultural by-products (ABPs). Specifically, the effects of proximate composition on the biogas production and degradation rates of the ABPs were investigated, and a new method based on proximate composition combinations was developed to minimize the diauxic growth lag-phase. Experiments were performed using biogas potential tests at a substrate loading of 2.5 g VS/L and feed to microorganism ratio (F/M) of 0...
February 1, 2017: Journal of Environmental Management
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