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https://www.readbyqxmd.com/read/29155493/the-crystal-structure-and-catalytic-mechanism-of-hydroxynitrile-lyase-from-passion-fruit-passiflora-edulis
#1
Fumihiro Motojima, Aem Nuylert, Yasuhisa Asano
Hydroxynitrile lyases (HNLs) are enzymes used in the synthesis of chiral cyanohydrins. The HNL from Passiflora edulis (PeHNL) is R-selective and is the smallest HNL known to date. The crystal structures of PeHNL and its C-terminal peptide depleted derivative were determined by molecular replacement method using the template structure of a heat stable protein, SP1, from Populus tremula at 2.8 Å and 1.8 Å resolution, respectively. PeHNL belongs to dimeric α+β barrel superfamily consisting of a central β-barrel in the middle of a dimer...
November 20, 2017: FEBS Journal
https://www.readbyqxmd.com/read/29136029/a-structural-review-of-foliar-glands-in-passiflora-l-passifloraceae
#2
Renata Cristina Cassimiro de Lemos, Delmira da Costa Silva, Gladys Flavia de Albuquerque Melo-de-Pinna
Extrafloral glands in Passifloraceae species have aroused the interest of many researchers because of their wide morphological diversity. The present work analyzed the foliar glands on 34 species of Passiflora from samples containing glands in the petiole and foliar blade fixed in 50% solution of formaldehyde-ethanol-acetic acid and stored in a 70% ethanol solution. For anatomical analyses, part of the material was embedded in Paraplast, longitudinally sectioned and double stained with safranin and astra blue...
2017: PloS One
https://www.readbyqxmd.com/read/29129002/histological-characterization-of-passiflora-pohlii-mast-root-tips-cryopreserved-using-the-v-cryo-plate-technique
#3
Mariela J Simão, Myriam Collin, Renata O Garcia, Elisabeth Mansur, Georgia Pacheco, Florent Engelmann
Cryopreservation stands out as the main strategy to ensure safe and cost efficient long-term conservation of plant germplasm, especially for biotechnological materials. However, the injuries associated with the procedure may result in structural damage and low recovery rates after cooling. Histological analysis provides useful information on the effects of osmotic dehydration, LN exposure, and recovery conditions on cellular integrity and tissue organization, allowing the determination of the critical steps of the cryopreservation protocol and, thus, the use of optimized treatments...
November 12, 2017: Protoplasma
https://www.readbyqxmd.com/read/29091859/vitexin-inhibits-inflammation-in-murine-ovalbumin-induced-allergic-asthma
#4
Cláudio Luís Venturini, Antonio Macho, Karuppusamy Arunachalam, Danielle Ayr Tavares de Almeida, Suellen Iara Guirra Rosa, Eduarda Pavan, Sikiru Olaitan Balogun, Amílcar Sabino Damazo, Domingos Tabajara de Oliveira Martins
Vitexin is an important component of various medicinal plants frequently used to treat asthma, such as Crataegus spp., Vitex spp., Passiflora spp., and Echinodorus spp. However, there is no information about the vitexin potential as anti-asthmatic. The aim of the present work was to evaluate the anti-hypersensitive activity of vitexin in a murine ovalbumin (OVA)-induced allergic asthma model. Mice were sensitized to OVA by i.p. injection on days 1st and 10th, followed by a daily challenge with OVA using a nebulizer, from days 19th to 24th...
October 25, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29057795/the-effect-of-piceatannol-from-passion-fruit-passiflora-edulis-seeds-on-metabolic-health-in-humans
#5
Munehiro Kitada, Yoshio Ogura, Hiroko Maruki-Uchida, Masahiko Sai, Taeko Suzuki, Keizo Kanasaki, Yuna Hara, Hiromi Seto, Yuka Kuroshima, Itaru Monno, Daisuke Koya
Animal studies have shown the beneficial effects of piceatannol on metabolic health; however, there is a lack of human studies designed to examine these effects. The objective of this study was to investigate the effects of piceatannol on metabolic health in humans. This randomized, placebo-controlled study was conducted on 39 subjects, including 10 overweight men and 9 overweight women (BMI ≥ 25), as well as 10 non-overweight men and 10 non-overweight women (BMI < 25). Subjects received piceatannol (20 mg/day) or placebo capsules for eight weeks in a random order...
October 18, 2017: Nutrients
https://www.readbyqxmd.com/read/29051650/optimization-of-the-antioxidant-polyphenolic-compounds-extraction-of-yellow-passion-fruit-seeds-passiflora-edulis-sims-by-response-surface-methodology
#6
Fernanda Carvalho de Santana, Lucillia Rabelo de Oliveira Torres, Fernanda Branco Shinagawa, Ana Mara de Oliveira E Silva, Luciana Tedesco Yoshime, Illana Louise Pereira de Melo, Paulo Sergio Marcellini, Jorge Mancini-Filho
The conditions for the solid-liquid extraction of the antioxidant polyphenol compounds from yellow passion fruit seeds were optimized by response surface methodology with the following variables as the extraction parameters: extraction time (12.8-147.2 min), ethanol concentration (13-97%), and temperature (16.4-83.6 °C). The polyphenol content and antioxidant capacity, which were assessed by the 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity, oxygen radical absorbance capacity, β-carotene bleaching assay, and ferric reducing antioxidant power assay, were considered dependent variables...
October 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29044321/comparative-pollen-morphological-analysis-in-the-subgenera-passiflora-and-decaloba
#7
Taliane L Soares, Onildo N Jesus, Everton H Souza, Mônica L Rossi, Eder J Oliveira
The genus Passiflora is the most diversified of the Passifloraceae, and its palynology presents wide morphological variability. The objective of the study was to evaluate the pollen morphology of 18 Passiflora species in order to identify informative pollinic characteristics to contribute to the taxonomic classification of the genus. The morphology of the pollen grains and the exine structure were investigated using light microscopy and scanning electron microscopy. Differences in the pollen morphology were found in the studied species, mainly in terms of shape, pollen aperture and ornamentation pattern of the exine...
October 16, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/29020753/erratum-to-morphometric-analysis-of-passiflora-leaves-the-relationship-between-landmarks-of-the-vasculature-and-elliptical-fourier-descriptors-of-the-blade
#8
Daniel H Chitwood, Wagner C Otoni
Background: Leaf shape among Passiflora species is spectacularly diverse. Underlying this diversity in leaf shape are profound changes in the patterning of the primary vasculature and laminar outgrowth. Each of these aspects of leaf morphology-vasculature and blade-provides different insights into leaf patterning. Results: Here, we morphometrically analyze >3300 leaves from 40 different Passiflora species collected sequentially across the vine. Each leaf is measured in two different ways: using 1) 15 homologous Procrustes-adjusted landmarks of the vasculature, sinuses, and lobes; and 2) Elliptical Fourier Descriptors (EFDs), which quantify the outline of the leaf...
October 1, 2017: GigaScience
https://www.readbyqxmd.com/read/28991455/pyrazinoic-acid-inhibits-mycobacterial-coenzyme-a-biosynthesis-by-binding-to-aspartate-decarboxylase-pand
#9
Pooja Gopal, Wilson Nartey, Priya Ragunathan, Jansy Sarathy, Firat Kaya, Michelle Yee, Claudia Setzer, Malathy Sony Subramanian Manimekalai, Véronique Dartois, Gerhard Grüber, Thomas Dick
Previously, we showed that a major in vitro and in vivo mechanism of resistance to pyrazinoic acid (POA), the bioactive component of the critical tuberculosis (TB) prodrug pyrazinamide (PZA), involves missense mutations in the aspartate decarboxylase PanD, an enzyme required for coenzyme A biosynthesis. What is the mechanism of action of POA? Upon demonstrating that treatment of M. bovis BCG with POA resulted in a depletion of intracellular coenzyme A and confirming that this POA-mediated depletion is prevented by either missense mutations in PanD or exogenous supplementation of pantothenate, we hypothesized that POA binds to PanD and that this binding blocks the biosynthetic pathway...
October 18, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/28920038/comparing-the-effect-of-preoperative-administration-of-melatonin-and-passiflora-incarnata-on-postoperative-cognitive-disorders-in-adult-patients-undergoing-elective-surgery
#10
Faranak Rokhtabnak, Mohammad Reza Ghodraty, Alireza Kholdebarin, Ali Khatibi, Seyedeh Somayeh Seyed Alizadeh, Zahra Sadat Koleini, Mohammad Mahdi Zamani, Alireza Pournajafian
BACKGROUND: Anxiety is a preoperative complication, which most patients encounter. The use of a premedication to reduce preoperative anxiety with minimal cognitive impairment is crucial. OBJECTIVES: This study was conducted to compare the sedative effect of preoperative melatonin and Passiflora incarnata in patients undergoing elective surgery regarding their potential for postoperative cognitive disorders. METHODS: In this clinical trial, 52 patients American society of anesthesiologists grade (ASA) I and II of both genders were selected to receive either Passiflora incarnata (1000 mg nature made) (n = 26) or melatonin (6 mg) (n = 26) as premedication one hour before surgery...
February 2017: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/28901723/the-arms-race-between-heliconiine-butterflies-and-passiflora-plants-new-insights-on-an-ancient-subject
#11
Érika C P de Castro, Mika Zagrobelny, Márcio Z Cardoso, Søren Bak
Heliconiines are called passion vine butterflies because they feed exclusively on Passiflora plants during the larval stage. Many features of Passiflora and heliconiines indicate that they have radiated and speciated in association with each other, and therefore this model system was one of the first examples used to exemplify coevolution theory. Three major adaptations of Passiflora plants supported arguments in favour of their coevolution with heliconiines: unusual variation of leaf shape within the genus; the occurrence of yellow structures mimicking heliconiine eggs; and their extensive diversity of defence compounds called cyanogenic glucosides...
September 13, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28893593/monoaminergic-neurotransmission-is-mediating-the-antidepressant-like-effects-of-passiflora-edulis-sims-fo-edulis
#12
Adriana S F S J Ayres, Wilton B Santos, Décio D Junqueira-Ayres, Geison M Costa, Freddy A Ramos, Leonardo Castellanos, Jovelina S F Alves, Laila Asth, Iris U de Medeiros, Silvana M Zucolotto, Elaine C Gavioli
The genus Passiflora is popularly used to treat anxiety. Recent studies showed antidepressant-like effects of two varieties of P. edulis (edulis and flavicarpa) in mice. However, the mechanisms of antidepressant actions are still unknown. Here, the effects of P. edulis fo. edulis aqueous extract (AE, 100-300mg/kg, po), and ethyl acetate (AcOEt, 25-50mg/kg, po), butanol (BuOH, 25-50mg/kg, po) and residual aqueous (25-100mg/kg, po) fractions were investigated in the mouse forced swimming test. In addition, the involvement of monoamines in the P...
November 1, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28874179/report-on-the-development-of-putative-functional-ssr-and-snp-markers-in-passion-fruits
#13
Zirlane Portugal da Costa, Carla de Freitas Munhoz, Maria Lucia Carneiro Vieira
BACKGROUND: Passionflowers Passiflora edulis and Passiflora alata are diploid, outcrossing and understudied fruit bearing species. In Brazil, passion fruit cultivation began relatively recently and has earned the country an outstanding position as the world's top producer of passion fruit. The fruit's main economic value lies in the production of juice, an essential exotic ingredient in juice blends. Currently, crop improvement strategies, including those for underexploited tropical species, tend to incorporate molecular genetic approaches...
September 6, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28835767/passiflora-cincinnata-extract-delays-the-development-of-motor-signs-and-prevents-dopaminergic-loss-in-a-mice-model-of-parkinson-s-disease
#14
Luiz Eduardo Mateus Brandão, Diana Aline Morais Ferreira Nôga, Aline Lima Dierschnabel, Clarissa Loureiro das Chagas Campêlo, Ywlliane da Silva Rodrigues Meurer, Ramón Hypolito Lima, Rovena Clara Galvão Januário Engelberth, Jeferson Souza Cavalcante, Clésio Andrade Lima, Murilo Marchioro, Charles Dos Santos Estevam, José Ronaldo Santos, Regina Helena Silva, Alessandra Mussi Ribeiro
Passiflora cincinnata Masters is a Brazilian native species of passionflower. This genus is known in the American continent folk medicine for its diuretic and analgesic properties. Nevertheless, few studies investigated possible biological effects of P. cincinnata extracts. Further, evidence of antioxidant actions encourages the investigation of possible neuroprotective effects in animal models of neurodegenerative diseases. This study investigates the effect of the P. cincinnata ethanolic extract (PAS) on mice submitted to a progressive model of Parkinson's disease (PD) induced by reserpine...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28756918/xanthine-oxidase-inhibitors-from-archidendron-clypearia-jack-i-c-nielsen-results-from-systematic-screening-of-vietnamese-medicinal-plants
#15
Nguyen Thuy Duong, Pham Duc Vinh, Phuong Thien Thuong, Nguyen Thi Hoai, Le Nguyen Thanh, Tran The Bach, Nguyen Hai Nam, Nguyen Hoang Anh
OBJECTIVE: To screen Vietnamese medicinal plants for xanthine oxidase (XO) inhibitory activity and to isolate XO inhibitor(s) from the most active plant. METHODS: The plants materials were extracted by methanol. The active plant materials were fractionated using different organic solvents, including n-hexane, ethyl acetate, and n-butanol. Bioassay-guided fractionation and column chromatography were used to isolate compounds. The compounds structures were elucidated by analysis of spectroscopic data, including IR, MS, and NMR...
June 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28732469/microsatellite-marker-development-by-partial-sequencing-of-the-sour-passion-fruit-genome-passiflora-edulis-sims
#16
Susan Araya, Alexandre M Martins, Nilton T V Junqueira, Ana Maria Costa, Fábio G Faleiro, Márcio E Ferreira
BACKGROUND: The Passiflora genus comprises hundreds of wild and cultivated species of passion fruit used for food, industrial, ornamental and medicinal purposes. Efforts to develop genomic tools for genetic analysis of P. edulis, the most important commercial Passiflora species, are still incipient. In spite of many recognized applications of microsatellite markers in genetics and breeding, their availability for passion fruit research remains restricted. Microsatellite markers in P. edulis are usually limited in number, show reduced polymorphism, and are mostly based on compound or imperfect repeats...
July 21, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28727747/plant-species-dispersed-by-galapagos-tortoises-surf-the-wave-of-habitat-suitability-under-anthropogenic-climate-change
#17
Diego Ellis-Soto, Stephen Blake, Alaaeldin Soultan, Anne Guézou, Fredy Cabrera, Stefan Lötters
Native biodiversity on the Galapagos Archipelago is severely threatened by invasive alien species. On Santa Cruz Island, the abundance of introduced plant species is low in the arid lowlands of the Galapagos National Park, but increases with elevation into unprotected humid highlands. Two common alien plant species, guava (Psidium guajava) and passion fruit (Passiflora edulis) occur at higher elevations yet their seeds are dispersed into the lowlands by migrating Galapagos tortoises (Chelonoidis spp.). Tortoises transport large quantities of seeds over long distances into environments in which they have little or no chance of germination and survival under current climate conditions...
2017: PloS One
https://www.readbyqxmd.com/read/28568647/standardized-passiflora-incarnata-l-extract-reverts-the-analgesia-induced-by-alcohol-withdrawal-in-rats
#18
Rebeca Vargas Antunes Schunck, Isabel Cristina Macedo, Gabriela Laste, Andressa de Souza, Marina Tuerlinckx Costa Valle, Janaína L O Salomón, Ellen Almeida Nunes, Andreia Cristina Wildner Campos, Simone Cristina Baggio Gnoatto, Ana Maria Bergold, Eduardo L Konrath, Eliane Dallegrave, Marcelo Dutra Arbo, Iraci L S Torres, Mirna Bainy Leal
Passiflora incarnata L. (Passifloraceae) has been traditionally used for treatment of anxiety, insomnia, drug addiction, mild infections, and pain. The aim of this study was to investigate the effect of a commercial extract of P. incarnata in the analgesia induced by alcohol withdrawal syndrome in rats. In addition, brain-derived neurotrophic factor and interleukin-10 levels were evaluated in prefrontal cortex, brainstem, and hippocampus. Male adult rats received by oral gavage: (1: water group) water for 19 days, 1 day interval and water (8 days); (2: P...
August 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28556245/physico-chemical-properties-rheology-and-degree-of-esterification-of-passion-fruit-passiflora-edulis-f-flavicarpa-peel-flour
#19
Emanuela M Coelho, Luciana C de Azevêdo, Arão C Viana, Ingrid G Ramos, Raquel G Gomes, Marcos Dos S Lima, Marcelo A Umsza-Guez
BACKGROUND: The peel of yellow passion fruit is as an agro-industrial waste of great environmental impact, representing more than 50% of the total weight of the fruit. For this reason, and also considering its importance as a source of functional components such as pectin, this organic waste is increasingly attracting the attention of researchers. The aim of this study was to investigate the physico-chemical composition and physical properties of this material, which may be of interest to the food industry...
May 27, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28530605/screening-of-passiflora-l-mineral-content-using-principal-component-analysis-and-kohonen-self-organizing-maps
#20
Cleber Galvão Novaes, Ivana Lago da Silva Romão, Berlane Gomes Santos, Jéssica Palhares Ribeiro, Marcos Almeida Bezerra, Erik Galvão Paranhos da Silva
A method using digestion with diluted nitric acid and inductively coupled plasma optical emission spectrometry was applied to determine metal ions in the peel, pulp, and seed of Passiflora edulis f. flavicarpa and Passiflora cincinnata cultivated in the Bahia state, Brazil. Plasma parameters (radio frequency power and argon flow rates) were optimized. The quantification limits (µg g(-1)) were: Ca (43.0); Co (1.3); Cu (10.0); Fe (10.0); K (20.0); Mg (26.6); Mn (0.33); Na (56.6) and Zn (10.0). The accuracy of the method was evaluated by the analysis of certified reference materials (NIST 1567a Wheat Flour and NIST 1577b Bovine Liver)...
October 15, 2017: Food Chemistry
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