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Journal articles on the topic 'Erythrée'

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Published: 4 June 2021
Last updated: 19 February 2022

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1

D'Argent, Pierre. "La Commission des réclamations Erythrée/Ethiopie : suite et fin." Annuaire français de droit international 55, no. 1 (2009): 279–97. http://dx.doi.org/10.3406/afdi.2009.4072.

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2

Rougé, Jean. "Le Périple de la mer Erythrée, à propos d'un livre récent." Archaeonautica 10, no. 1 (1990): 265–69. http://dx.doi.org/10.3406/nauti.1990.907.

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3

ROBIN, Ch. "L'Arabie du sud et la date duPériple de la mer Erythrée(nouvelles données)." Journal Asiatique 279, no. 1 (January 1, 1991): 1–30. http://dx.doi.org/10.2143/ja.279.1.2011206.

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4

Miller, Catherine. "Fabienne Le Houérou, Ethiopie-Erythrée. Frères ennemis de la corne de l’Afrique, Paris, l’Harmattan, Les Nouvelles d’Adis, 2000, 160 p." Revue des mondes musulmans et de la Méditerranée, no. 95-98 (April 15, 2002): 498–501. http://dx.doi.org/10.4000/remmm.2467.

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5

Blanáriková-Hlobilová, Iva, Lubor Fišera, Naďa Prónayová, and Marian Koman. "1,3-Dipolar Cycloadditions of D-Erythrose- and D-Threose-Derived Alkenes with Nitrones." Collection of Czechoslovak Chemical Communications 68, no. 5 (2003): 951–64. http://dx.doi.org/10.1135/cccc20030951.

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The new chiral terminal alkenes derived from cyclic acetals of D-erythrose 1-3 and D-threose 5, 6 were prepared. The alkenes 1, 2 and 5 react with chiral nitrones to afford the corresponding diastereomeric isoxazolidines 19-21. The stereoselectivity was dependent on the steric hindrance of the nitrone. In all cases the cycloadditions are endo-selective. The major products were found to have the C-3/C-4 erythro- and C-3/C-3a cis-configuration. Its formation can be rationalized by a less hindered endo-attack of the (Z)-nitrone in an antiperiplanar manner with respect to the largest group of the cyclic acetal.
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6

Sugimoto, T., T. Akiyama, Y. Matsumoto, and G. Meshitsuka. "The Erythro/Threo Ratio of β-O-4 Structures as an Important Structural Characteristic of Lignin. Part 2. Changes in Erythro/Threo (E/T) Ratio of β-O-4 Structures during Delignification Reactions." Holzforschung 56, no. 4 (June 27, 2002): 416–21. http://dx.doi.org/10.1515/hf.2002.064.

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Summary The ozonation method was applied to an analysis of the changes in erythro and threo (E/T) ratio of arylglycerol-β-aryl ether (β-O-4) structures in the residual lignins of delignified wood samples. When delignified by alkali cook, not only the total yield of erythronic and threonic acids per lignin decreased, but also the E/T ratio decreased with the progress of delignification. These results indicate that residual lignin of alkali-delignified wood contain only a small amount of arylglycerol-β-aryl ether structures and/or glycerol side chains, which are relatively rich in the threo form. A suggested reason for this, in addition to the stereo-preferential degradation of the erythroβ-O-4 structure, is the increasing contribution of topologically-inert lignin and/or chemically-inert lignin structures with a low original E/T ratio. In contrast, when the wood samples are delignified by NaClO2 treatment, no significant change is observed in the E/T ratio. This confirms that the NaClO2 delignification proceeds without the residual lignin retaining special configurational characteristics in its side chains.
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7

Mangeon, Anthony. "Opoku-Agyemang (Naana), Lovejoy (Paul E.), Trotman (David V.), eds., Africa and Trans-atlantic Memories. Literary and Aesthetic Manifestations of Diaspora and History. Trenton (New Jersey), Asmara (Erythrée) : Africa World Press Inc., 2008, vii-477 p. – ISBN 1-59221-633-1." Études littéraires africaines, no. 28 (2009): 98. http://dx.doi.org/10.7202/1028813ar.

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8

Cerda, L., M. A. Beeche, and C. Jana-Saen. "ASPECTOS BIOLOGICOS DE Automeris erythraea (LEPIDOPTERA: SATURNIIDAE)." Bosque 6, no. 2 (1985): 113–15. http://dx.doi.org/10.4206/bosque.1985.v6n2-06.

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9

Wildner, Manfred, Gerald Giester, Christian L. Lengauer, and Catherine A. Mccammon. "Structure and crystal chemistry of vivianite-type compounds: Crystal structures of erythrite and annabergite with a Mössbauer study of erythrite." European Journal of Mineralogy 8, no. 1 (February 22, 1996): 187–92. http://dx.doi.org/10.1127/ejm/8/1/0187.

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10

Ciesielczuk, Justyna, Mateusz Dulski, Janusz Janeczek, Tomasz Krzykawski, Joachim Kusz, and Eligiusz Szełęg. "Crystal Chemistry of an Erythrite-Köttigite Solid Solution (Co3–xZnx) (AsO4)2·8H2O." Minerals 10, no. 6 (June 17, 2020): 548. http://dx.doi.org/10.3390/min10060548.

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A wide compositional range, covering about 90% of an expected erythrite-köttigite substitutional solid solution with extreme compositions of (Co2.84Mg0.14Zn0.02) (AsO4)2·8H2O and (Zn2.74Co0.27) (AsO4)2·8H2O, was revealed in a suite of samples from a polymetallic ore deposit in Miedzianka, SW Poland. Members of the solid solution series were examined by means of Electron Probe Microanalysis (EPMA), Scanning Electron Microscopy (SEM)/Energy-Dispersive Spectrometer (EDS), X-ray single-crystal and powder diffraction, and Raman spectroscopy. Metal cations were randomly distributed between two special octahedral sites in the erythrite–köttigite structure. In response to Co ↔ Zn substitutions, small but significant changes in bond distances (particularly in [AsO4] tetrahedra), rotation, and distortion of co-ordination polyhedra were observed. Two sub-series of dominant cationic substitutions (Co-Mg-Ni and Co-Fe-Zn) were noted within the arsenate series of vivianite-group minerals linked by erythrite. The paragenetic sequence erythrite → Zn-rich erythrite → Co-rich köttigite → köttigite reflects the evolution of the solution’s pH towards increased acidity and a relative increase in the concentration of Zn ions following precipitation of erythrite.
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11

Martens, Wayde, Ray L. Frost, and J. Theo Kloprogge. "Raman spectroscopy of synthetic erythrite, partially dehydrated erythrite and hydrothermally synthesized dehydrated erythrite." Journal of Raman Spectroscopy 34, no. 1 (January 2003): 90–95. http://dx.doi.org/10.1002/jrs.958.

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12

Lee, Jung-Kul, Sang-Yong Kim, Yeon-Woo Ryu, Jin-Ho Seo, and Jung-Hoe Kim. "Purification and Characterization of a Novel Erythrose Reductase from Candida magnoliae." Applied and Environmental Microbiology 69, no. 7 (July 2003): 3710–18. http://dx.doi.org/10.1128/aem.69.7.3710-3718.2003.

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ABSTRACT Erythritol biosynthesis is catalyzed by erythrose reductase, which converts erythrose to erythritol. Erythrose reductase, however, has never been characterized in terms of amino acid sequence and kinetics. In this study, NAD(P)H-dependent erythrose reductase was purified to homogeneity from Candida magnoliae KFCC 11023 by ion exchange, gel filtration, affinity chromatography, and preparative electrophoresis. The molecular weights of erythrose reductase determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and gel filtration chromatography were 38,800 and 79,000, respectively, suggesting that the enzyme is homodimeric. Partial amino acid sequence analysis indicates that the enzyme is closely related to other yeast aldose reductases. C. magnoliae erythrose reductase catalyzes the reduction of various aldehydes. Among aldoses, erythrose was the preferred substrate (K m = 7.9 mM; k cat/K m = 0.73 mM−1 s−1). This enzyme had a dual coenzyme specificity with greater catalytic efficiency with NADH (k cat/K m = 450 mM−1 s−1) than with NADPH (k cat/K m = 5.5 mM−1 s−1), unlike previously characterized aldose reductases, and is specific for transferring the 4-pro-R hydrogen of NADH, which is typical of members of the aldo/keto reductase superfamily. Initial velocity and product inhibition studies are consistent with the hypothesis that the reduction proceeds via a sequential ordered mechanism. The enzyme required sulfhydryl compounds for optimal activity and was strongly inhibited by Cu2+ and quercetin, a strong aldose reductase inhibitor, but was not inhibited by aldehyde reductase inhibitors and did not catalyze the reduction of the substrates for carbonyl reductase. These data indicate that the C. magnoliae erythrose reductase is an NAD(P)H-dependent homodimeric aldose reductase with an unusual dual coenzyme specificity.
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13

Brunner, B., U. Neubert, M. J. Flaig, and C. A. Sander. "Multiple Erytheme." Der Hautarzt 54, no. 6 (March 25, 2003): 544–46. http://dx.doi.org/10.1007/s00105-003-0492-7.

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14

Gubar, Svitlana, Anna Materiienko, Liudas Ivanauskas, Volodymyr Mishchenko, Olha Vasylieva, and Victoriya Georgiyants. "A novel comparative chromatographic research of secoiridoid glycosides in two species of centaury herb." ScienceRise: Pharmaceutical Science, no. 3(31) (June 30, 2021): 28–33. http://dx.doi.org/10.15587/2519-4852.2021.235774.

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The aim: A novel comparative analysis of the secoiridoid glycosides composition in Centaurium erythraea Rafn. and Cеntaurium pulchellum (Sw.) Druce has being described. Swertiamarin has been chosen as an active marker and its comparative quantitative estimation in two species of the raw material has been carried out by HPLC method. Materials and methods: The quantitative HPLC analysis of swertiamarin was conducted using a chromatographic column ACE 5 C18. Methanol and 0,5 % acetic acid aqueous solution were used as mobile phases; the chromatographic procedure was carried out in a gradient mode. Results: The content of swertiamarin in the C. pulchellum herb ranges from 2.51 to 3.07 mg/100 mg. In that time swertiamarin content in C. erythraea herb varies and depends from 3.83 to 8.94 mg/100 mg. The content of swertiamarin in C. pulchellum herb is much lower than in C. erythraea herb. Taking into account this fact the possibility of using of C. pulchellum herb for medicine instead of C. erythraea herb must be proven additionally by biological experiments. Also it could be preliminary concluded that the most appropriate climate for swertiamarin accumulation in C. erythraea herb is located in Central and Eastern parts of Ukraine. Conclusions: It was discovered that the main representative of secoiridoid glycosides in C. erythraea is swertiamarin when in C. pulchellum Druce that are represented by both sweroside and swertiamarin. A more perspective raw material – C. erythraea herb, according to the content of swertiamarin, was chosen
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15

Hřebabecký, Hubert, and Antonín Holý. "Synthesis of 1-(3-Azido-2,3-dideoxy-β-D-ribo-hexofuranosyl)-, 1-(2,3-Dideoxy-β-D-erythro-hexofuranosyl)- and 1-(2,3-Dideoxy-β-D-erythro-hex-2-enofuranosyl)pyrimidine Nucleosides." Collection of Czechoslovak Chemical Communications 59, no. 2 (1994): 412–20. http://dx.doi.org/10.1135/cccc19940412.

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1-(3-Azido-2,3-dideoxy-β-D-ribo-hexofuranosyl)uracil (XXII) and 1-(2,3-dideoxy-β-D-erythro-hex-2-enofuranosyl)uracil (VIII) were prepared starting from 1-(2-O-acetyl-3,5,6-tri-O-benzoyl-β-D-glucofuranosyl)uracil (I) by a procedure described previously for thymine analogs. 1-(2,3-Dideoxy-β-D-erythro-hexofuranosyl)uracil (XIII) was obtained by catalytic hydrogenation of 1-(5,6-di-O-benzoyl-2,3-dideoxy-β-D-erythro-hex-2-enofuranosyl)uracil (VII) and subsequent methanolysis. Reaction of dibenzoyl derivative VII, 1-(5,6-di-O-benzoyl-2,3-dideoxy-β-D-erythro-hexofuranosyl)uracil (XII) and the diacetate prepared by acetylation of azido derivative XXII with Lawesson's reagent, followed by methanolysis, afforded 1-(2,3-dideoxy-β-D-erythro-hex-2-enofuranosyl)-4-thiouracil (X), 1-(2,3-dideoxy-β-D-erythro-hexofuranosyl)-4-thiouracil (XV) and 1-(3-azido-2,3-dideoxy-β-D-ribo-hexofuranosyl)-4-thiouracil (XXIII), respectively. Heating of thio derivatives X, XV and XXIII with methanolic ammonia at 100 °C gave 1-(2,3-dideoxy-β-D-erythro-hex-2-enofuranosyl)cytosine (XI), 1-(2,3-dideoxy-β-D-erythro-hexofuranosyl)cytosine (XVI) and 1-(3-azido-2,3-dideoxy-β-D-ribo-hexofuranosyl)cytosine (XXIV).
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16

Muturi, Ephantus J., William T. Hay, Kenneth M. Doll, Jose L. Ramirez, and Gordon Selling. "Insecticidal Activity of Commiphora erythraea Essential Oil and Its Emulsions Against Larvae of Three Mosquito Species." Journal of Medical Entomology 57, no. 6 (May 30, 2020): 1835–42. http://dx.doi.org/10.1093/jme/tjaa097.

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Abstract The use of essential oils as ecofriendly tools for vector management is one of the mainstreams for biopesticide research. We evaluated the larvicidal properties of Commiphora erythraea (opoponax) essential oil and its fractions against Culex restuans Theobald, Culex pipiens L., and Aedes aegypti L. The use of bio-based amylose–N-1-hexadecylammonium chloride inclusion complex (Hex-Am) and amylose–sodium palmitate inclusion complex (Na-Palm) as emulsifiers for C. erythraea essential oil was also investigated. Bisabolene was the most abundant chemical constituent in the whole essential oil (33.9%), fraction 2 (62.5%), and fraction 4 (23.8%) while curzerene (32.6%) and α-santalene (30.1%) were the dominant chemical constituents in fractions 1 and 3, respectively. LC50 values for the whole essential oil were 19.05 ppm for Cx. restuans, 22.61 ppm for Cx. pipiens, and 29.83 ppm for Ae. aegypti and differed significantly. None of the four C. erythraea essential oil fractions were active against mosquito larvae. Two CYP450 genes (CYP6M11 and CYP6N12) and one GST gene (GST-2) were significantly upregulated in Ae. aegypti larvae exposed to C. erythraea essential oil suggesting their potential involvement in metabolic pathways for C. erythraea essential oil. Essential oil emulsions produced with Hex-Am were more toxic than the whole essential oil while those produced with Na-Palm had similar toxicity as the whole essential oil. These findings demonstrate that C. erythraea essential oil is a promising source of mosquito larvicide and that the use of Hex-Am as an emulsifier can enhance the insecticidal properties of C. erythraea essential oil.
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17

Akiyama, Takuya, Hitoshi Goto, Deded S. Nawawi, Wasrin Syafii, Yuji Matsumoto, and Gyosuke Meshitsuka. "Erythro/threo ratio of β-O-4-5 structures as an important structural characteristic of lignin. Part 4: Variation in the erythro/threo ratio in softwood and hardwood lignins and its relation to syringyl/guaiacyl ratio." Holzforschung 59, no. 3 (May 1, 2005): 276–81. http://dx.doi.org/10.1515/hf.2005.045.

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Abstract The proportion of erythro- and threo-forms of β-O-4-structures in lignin was elucidated by ozonation analysis of 21 wood species, and the relationship to the syringyl and guaiacyl composition was investigated. For all hardwood species, the erythro-form of β-O-4-structures predominated, although the extent varied widely, depending on wood species. In contrast, the proportion and amount of erythro- and threo-forms were very similar in all softwood species. The proportion of the erythro-form was greater in species with a higher methoxyl content in the lignin (correlation coefficient, R2=0.83). The S/V ratio (molar ratio of syringaldehyde and syringic acid to that of vanillin and vanillic acid) obtained by nitrobenzene oxidation was also strongly correlated with the proportion of the erythro-form (R2=0.99). Accordingly, the syringyl/guaiacyl ratio is closely related to the erythro/threo ratio. This stereochemical characteristic of β-O-4-structures is discussed in relation to the process of lignin formation.
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18

Lee, Jung-Kul, Bong-Seong Koo, and Sang-Yong Kim. "Fumarate-Mediated Inhibition of Erythrose Reductase, a Key Enzyme for Erythritol Production by Torula corallina." Applied and Environmental Microbiology 68, no. 9 (September 2002): 4534–38. http://dx.doi.org/10.1128/aem.68.9.4534-4538.2002.

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ABSTRACT Torula corallina, a strain presently being used for the industrial production of erythritol, has the highest erythritol yield ever reported for an erythritol-producing microorganism. The increased production of erythritol by Torula corallina with trace elements such as Cu2+ has been thoroughly reported, but the mechanism by which Cu2+ increases the production of erythritol has not been studied. This study demonstrated that supplemental Cu2+ enhanced the production of erythritol, while it significantly decreased the production of a major by-product that accumulates during erythritol fermentation, which was identified as fumarate by instrumental analyses. Erythrose reductase, a key enzyme that converts erythrose to erythritol in T. corallina, was purified to homogeneity by chromatographic methods, including ion-exchange and affinity chromatography. In vitro, purified erythrose reductase was significantly inhibited noncompetitively by increasing the fumarate concentration. In contrast, the enzyme activity remained almost constant regardless of Cu2+ concentration. This suggests that supplemental Cu2+ reduced the production of fumarate, a strong inhibitor of erythrose reductase, which led to less inhibition of erythrose reductase and a high yield of erythritol. This is the first report that suggests catabolite repression by a tricarboxylic acid cycle intermediate in T. corallina.
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19

Ohi, Hiroshi, and Masanori Kishino. "Acid hydrolysis kinetics and identification of erythro and threo α-ethyl ether derivatives of non-phenolic arylglycerol-β-syringyl ether lignin model compounds." Holzforschung 59, no. 5 (September 1, 2005): 497–502. http://dx.doi.org/10.1515/hf.2005.082.

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Abstract Based on their hydrolysis behavior, NMR spectra of the erythro and threo forms of 3-(3,4-dimethoxy-phenyl)-2-(2,6-dimethoxyphenoxy)-3-ethoxypropan-1-ol (named VSE, i.e., α-ethyl ether derivative of veratrylglycerol-β-syringylether) were successfully assigned. A mixture of erythro and threo VSEs was treated at 90°C in pH 1.2 nitric acid solution. In order to assign them, the molar ratios of erythro and threo forms of 1-(3,4-dimethoxyphenyl)-2-(2,6-dimethoxy-phenoxy)propane-1,3-diol (named VS, i.e., veratrylglycerol-β-syringyl) ether given by each VSE were kinetically determined during the treatment. It was found that the inversion ratio at which the first VSE isomer gave erythro-VS was 0.73. Therefore, this isomer was identified as threo-VSE. In addition, from calculations using the least-squares method, the inversion ratio at which the other VSE isomer gave threo-VS was found to be >0.73. These values mean that threo-VSE yields 73% erythro- and 27% threo-VS, while erythro-VSE yields mainly threo-VS.
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20

Hansen, Ove. "On the archaic constitution of Erythrae." L'antiquité classique 55, no. 1 (1986): 323. http://dx.doi.org/10.3406/antiq.1986.2187.

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21

Marcotullio, Maria Carla, Claudio Santi, Gildas Norbert Oball-Mond Mwankie, and Massimo Curini. "Chemical Composition of the Essential Oil of Commiphora erythraea." Natural Product Communications 4, no. 12 (December 2009): 1934578X0900401. http://dx.doi.org/10.1177/1934578x0900401227.

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The essential oil composition of Commiphora erythraea (Ehrenb) Engl. is reported for the first time. The oil is rich in sesquiterpenes, particularly furanosesquiterpenes (50.3%). GC-MS analysis of the oil permitted differentiation between C. erythraea and C. kataf, two often confused species.
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22

Choi, Seo Yeol, Min Ho Seo, and Ho Young Soh. "Short-term variation in abundance of four Acartia species (Copepoda, Calanoida) in a eutrophic bay." PeerJ 9 (March 10, 2021): e10835. http://dx.doi.org/10.7717/peerj.10835.

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The short-term variation in the abundance of Acartia copepods in the eutrophic Gamak Bay of South Korea was investigated with weekly measurements from October 2007 to September 2008. During this period, four Acartia species (A. erythraea, A. ohtsukai, A. omorii, and A. sinjiensis) were recorded as showing seasonally different peak abundance. The abundance of A. erythraea and A. sinjiensis was high in autumn, whereas that of A. omorii was high from winter to spring. In summer, A. erythraea, A. ohtsukai, and A. sinjiensis coexisted at peak abundance significantly related to water temperature and salinity. Results from the response curves of the four Acartia species to water temperature and salinity suggest that A. erythraea and A. sinjiensis increased in abundance at water temperatures >18 °C, whereas A. ohtsukai increased in abundance at water temperatures >27 °C. The occurrence of A. erythraea, A. ohtsukai, and A. sinjiensis decreased with increasing salinity, but chlorophyll-a concentration showed no effect on occurrence. Despite these findings, the coexistence of the three ecologically similar species may be due to prey abundance in summer and autumn (chlorophyll-a concentration >10 µg L−1). Notably, the wide range of the response curve of A. omorii indicates its occurrence at higher salinity levels than other species.
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23

Rudiyansyah, Rudiyansyah, Lynette K. Lambert, and Mary J. Garson. "CONFORMATIONAL STUDIES OF LIGNANS FROM Durio oxleyanus Griff. ()." Indonesian Journal of Chemistry 10, no. 1 (June 21, 2010): 116–21. http://dx.doi.org/10.22146/ijc.21490.

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Searching for secondary metabolites from the wood bark of Durio oxleyanus has afforded two new lignans, namely threo-carolignan Y (1) and erythro-carolignan Y (2) together with three other known lignans erythro-carolignan X (3), boehmenan X (4) and boehmenan (5). The relative configurations of compounds 1 and 2 were established by J-based configurational analysis and 2D NOESY studies. Keywords: carolignan, threo, erythro, Durio, Bombacaceae
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24

Bermudez, Luiz E., Clark B. Inderlied, Peter Kolonoski, Christopher B. Chee, Priscilla Aralar, Mary Petrofsky, Toufan Parman, et al. "Identification of (+)-Erythro-Mefloquine as an Active Enantiomer with Greater Efficacy than Mefloquine against Mycobacterium avium Infection in Mice." Antimicrobial Agents and Chemotherapy 56, no. 8 (May 21, 2012): 4202–6. http://dx.doi.org/10.1128/aac.00320-12.

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ABSTRACTInfection caused byMycobacterium aviumis common in AIDS patients who do not receive treatment with highly active antiretroviral therapy (HAART) or who develop resistance to anti-HIV therapy. Mefloquine, a racemic mixture used for malaria prophylaxis and treatment, is bactericidal againstM. aviumin mice. MICs of (+)-erythro-, (−)-erythro-, (+)-threo-, and (−)-threo-mefloquine were 32 μg/ml, 32 μg/ml, 64 μg/ml, and 64 μg/ml, respectively. The postantibiotic effect for (+)-erythro-mefloquine was 36 h (MIC) and 41 h for a concentration of 4× MIC. The mefloquine postantibiotic effect was 25 h (MIC and 4× MIC). After baseline infection was established (7 days), the (+)- and (−)-isomers of the diastereomeric threo- and erythro-α-(2-piperidyl)-2,8-bis(trifluoromethyl)-4-quinolinemethanol were individually used to orally treat C57BL/6 bg+/bg+beige mice that were infected intravenously withM. avium. Mice were also treated with commercial mefloquine and diluent as controls. After 4 weeks of treatment, the mice were harvested, and the number of bacteria in spleen and liver was determined. Mice receiving (+)- or (−)-threo-mefloquine or (−)-erythro-mefloquine had numbers of bacterial load in tissues similar to those of untreated control mice at 4 weeks. Commercial mefloquine had a bactericidal effect. However, mice given the (+)-erythro-enantiomer for 4 weeks had a significantly greater reduction of bacterial load than those given mefloquine. Thus, (+)-erythro-mefloquine is the active enantiomer of mefloquine againstM. aviumand perhaps other mycobacteria.
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25

Meffert, H., H. Piazena, and G. Kolde. "Die Infrarot-Erytheme." Aktuelle Dermatologie 34, no. 4 (April 2008): 119–23. http://dx.doi.org/10.1055/s-2007-995682.

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26

Schirra, Astrid, Wolfgang Hartschuh, Mindaugas Andrulis, Alexander Enk, and Ferdinand Toberer. "Perianale hämorrhagische Erytheme." JDDG: Journal der Deutschen Dermatologischen Gesellschaft 13, no. 7 (June 25, 2015): 707–9. http://dx.doi.org/10.1111/ddg.90_12666.

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27

Pavlova, V., N. Mamylina, A. Semchenko, Yu Kamskova, and D. Saraykin. "THE PERIPHERAL COMPONENT OF ERYTHRON AND CYTOKINE PROFILE IN STUDENTS IN RESPONSE TO EXAMINATION STRESS." Human Sport Medicine 20, no. 1 (June 1, 2020): 36–42. http://dx.doi.org/10.14529/hsm200105.

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Aim. The article deals with studying the features of the peripheral component of erythron and cytokine profile in the blood of students with different modes of physical activity during psycho-emotional stress associated with exams in distance education. Materials and methods. The study involved 48 students aged 26.13 ± 0.48 years. To assess the concentration of erythron elements, the Cell-Dyne 3700 automated analyzer was used. The content of cytokines in blood serum was determined with the help of the Multiscane Biotech analyzer using reagent kits of the Cytokine company (St. Petersburg). Results. The features of the peripheral component of erythron and the cytokine profile were established in the peripheral blood of distant students. The severity of changes in anti- and pro-inflammatory cytokines was determined. The revealed changes can be partially eliminated when aerobic training is included in e-learning programs. Conclusion. The results of the study made it possible to identify dysfunctions of the erythron and cytokine profile in distant students and to show the high efficiency of aerobic training in terms of increasing the hematological and neuroimmune reserve of the body under stress. The effects of aerobic training are considered as an adaptive resource that indirectly affects an optimal balance between the content of pro-inflammatory and anti-inflammatory cytokines and elements of the erythron in peripheral blood in distant students.
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28

Gaudreau, Luc R., Dominique Boucher, Jean M. Lavoie, Ryszard Brzezinski, and Claude V. Déry. "Use of phage JHJ-1 to assess restriction in the genus Saccharopolyspora." Canadian Journal of Microbiology 38, no. 9 (September 1, 1992): 989–92. http://dx.doi.org/10.1139/m92-160.

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Restriction of phage growth occurred when phage JHJ-1 propagated in one member of the genus Saccharopolyspora (S. hirsuta, S. taberi, S. rectivirgula, or the erythromycin-producing S. erythraea) was used to infect a different member. Of several S. erythraea strains tested, S. erythraea NRRL 2359 exhibited the weakest restriction. Phage SE-3 did not appear to be strongly restricted in Saccharopolyspora strains, whereas restriction of phages FRb-P and FRa-C was confined mainly to S. hirsuta NRRL B-5792. There was no correlation between the restriction of phage growth and the presence of exocytoplasmic DNAse. Key words: Saccharopolyspora, restriction, host range, bacteriophage JHJ-1, bacteriophage SE-3, bacteriophage FRa-C, bacteriophage FRb-P.
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29

Trendafilova, Natasha, Ivelina Georgieva, and George St Nikolov. "Platinum (II) Compounds With Antitumor Activity Studied by Molecular Mechanics." Metal-Based Drugs 5, no. 2 (January 1, 1998): 91–102. http://dx.doi.org/10.1155/mbd.1998.91.

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A series of Pt(ll) complexes with antitumor properties: [1,2-bis(2,6-dichloro-4-hydroxyphenyl)ethylenediamine]PtL2 (meso-1-PtL2) and [erythro-1-(2,6-dichloro-4-hydroxyphenyl)-2-(2-halo-4-hydroxyphenyl)ethylenediamine]PtL2, [2L=2Cl−,2I−,SO42−; halo = F (erythro-8-PtL2), halo = Cl (erythro-9-PtL2)] has been modelled by molecular mechanics (MM). The MM calculations were carried out for different isomers and ligand conformations meso-δ, meso-λ, d,l-δ, d,I-λ. The compounds with the lowest MM energies have the same geometries as those obtained by X-ray analysis. The calculated MMX energy orders: meso-1-PtL2 < erythro-9-PtL2 < erythro-8-PtL2 for L=I−, Cl− and SO42− are reverse to the known antitumor activity order - the lowest energy complex (the most stable one)is the one with the highest estrogen activity (meso-1-PtL2). The type of the leaving group (L) does not alter the energy order, which is in agreement with the biological experiments that show a slight dependence of the estrogen properties on the leaving group type.
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30

Criss, Dexter L., Thomas Elder, Thomas H. Fisher, and Tor P. Schultz. "Effect of the α- and γ-Hydroxyls on the Alkaline Hydrolysis Rate of Nonphenolic β-0-4 Lignin Diastereomers." Holzforschung 56, no. 1 (February 6, 2002): 67–72. http://dx.doi.org/10.1515/hf.2002.011.

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Summary Nonphenolic β-0-4 erythro and threo lignin model diastereomers with various γ-groups (CH3, CH2-O-CH3, and CH2OH) and Cα-substituents (OH, OCH3) were synthesized, and the alkaline hydrolysis rates and activation parameters determined. In addition, two of the diastereomer pairs were computationally modeled and the thermodynamic values for the ionization of the α- or γ-hydroxyl, and subsequent displacement of the phenolate group to form an epoxide intermediate, were determined. The results suggest that the erythro γ-hydroxyl may participate in the hydrolysis to a significant extent, which results in a relatively high erythro/threo rate ratio for the α,γ-di-OH isomers. The influence of the erythro γ-hydroxyl on the hydrolysis rate may be due to the relatively favorable stability of the erythro γ-oxyanion. The electronic effect of the g-substituent appears to influence how fast the α-hydroxyl displaces the phenoxyl. We had previously suggested that the γ-substituent sterically inhibits hydrolysis of the threo isomer, and computational modeling confirmed this.
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31

Milne, Jacqueline E., Krzysztof Jarowicki, Philip J. Kocienski, and Jorge Alonso. "Synthesis of d-erythro-sphingosine and d-erythro-ceramide." Chemical Communications, no. 5 (February 1, 2002): 426–27. http://dx.doi.org/10.1039/b111071n.

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32

Budniak, Liliia, Liudmyla Slobodianiuk, Svitlana Marchyshyn, Olha Demydiak, and Iryna Dakhym. "Determination of amino acids of some plants from Gentianaceae family." Pharmacia 68, no. 2 (May 20, 2021): 441–48. http://dx.doi.org/10.3897/pharmacia.68.e67052.

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Medicines from plants are widely used in the complex treatment of different diseases every day. Therefore, theoretical and practical interest is the in-depth study of the herb of perspective plants like Centaurium erythraea Rafn. and Gentiana cruciata L. These plants have a long history of usage and interest of people. The aim of the study was to determine the content of amino acids in these plants. The amino acids composition and content in the herb of study species of the family Gentianaceae determined by the HPLC method. The results of the research revealed that the raw material of Centaurium erythraea Rafn. and Gentiana cruciata L. contains free and bound amino acids. Sixteen free and seventeen bound amino acids were identified in the herb of Centaurium erythraea Rafn. The herb of Gentiana cruciata L. contained thirteen free and fifteen bound amino acids. L-glutamic acid, L-arginine, L-aspartic acid, and L-cystine were predominant of Centaurium erythraea Rafn. herb. Amino acids L-lysine, L-serine, L-aspartic acid, and L-phenylalanine were present in the herb of Gentiana cruciata L. in the greatest amount. The metabolic processes in which these amino acids are involved connected to the medicinal properties of the study plants according to their use in official or nontraditional medicine.
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33

Morris, S. A., W. P. Revill, J. Staunton, and P. F. Leadlay. "Purification and separation of holo- and apo-forms of Saccharopolyspora erythraea acyl-carrier protein released from recombinant Escherichia coli by freezing and thawing." Biochemical Journal 294, no. 2 (September 1, 1993): 521–27. http://dx.doi.org/10.1042/bj2940521.

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Saccharopolyspora erythraea acyl-carrier protein, highly expressed from a T7-based expression plasmid in Escherichia coli, can be selectively released from the cells in near-quantitative yield by a single cycle of freezing and thawing in a neutral buffer. Electrospray mass spectrometry was used to confirm that the recombinant S. erythraea acyl-carrier protein over-expressed in E. coli is present predominantly as the holo-form, with variable amounts of apo-acyl-carrier protein, holo-acyl-carrier protein dimer and holo-acyl-carrier protein glutathione adduct. The holo- and apo-acyl-carrier proteins are both readily purified on a large scale from the freeze-thaw extracts and can be separated from one another by octyl-Sepharose chromatography. The holo-acyl-carrier protein obtained in this way was fully active in supporting the synthesis of acyl-acyl-carrier protein by extracts of S. erythraea.
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34

Kirwan, L. P., and Lionel Casson. "The Periplus Maris Erythraei." Geographical Journal 156, no. 1 (March 1990): 96. http://dx.doi.org/10.2307/635468.

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35

Hansen, Ove. "Hestia Boulaia at Erythrai." L'antiquité classique 54, no. 1 (1985): 274–76. http://dx.doi.org/10.3406/antiq.1985.2159.

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36

Cook, Robert B. "Erythrite Bou Azzer, Morocco." Rocks & Minerals 82, no. 5 (January 2007): 402–8. http://dx.doi.org/10.3200/rmin.82.5.402-408.

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37

jpf. "Neues Molekül gegen Erytheme." Der Deutsche Dermatologe 63, no. 2 (February 2015): 145. http://dx.doi.org/10.1007/s15011-015-0089-3.

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38

Casson, Lionel. "Periplus Maris Erythraei 60." Classical Quarterly 37, no. 1 (May 1987): 233–35. http://dx.doi.org/10.1017/s0009838800031840.

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The Periplus Maris Erythraeiis a handbook written by an anonymous author in the second half of the first century A.D., for the use of merchants from Roman Egypt who traded with east Africa, Arabia, and India.1 In it the author devotes a good deal of space to the trade with India's west coast. He notes that there were two main commercial centres: one was Barygaza on the northwestern coast (44.15.4–7), and the other the twin ports of Muziris and Nelkynda on the southwestern (53.17.27–8), the area he calls Limyrike, more or less the equivalent of the Malabar coast. He spells out in detail what Barygaza imported and exported(49.16.20–31)and then does the same for Limyrike(56.18.16–28).
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39

Nilles, Nils, Andrea Kneisel, Armin Bender, and Michael Hertl. "Streifenförmige Erytheme unter Polychemotherapie." JDDG: Journal der Deutschen Dermatologischen Gesellschaft 8, no. 10 (September 24, 2010): 849–50. http://dx.doi.org/10.1111/j.1610-0387.2009.07387.x.

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40

Hayfa, D., A. Souissi, I. Chelly, N. Daadaa, N. Kchir, and M. Mokni. "Erythème induré de Bazin." La Revue de Médecine Interne 38 (December 2017): A225—A226. http://dx.doi.org/10.1016/j.revmed.2017.10.238.

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41

Grund, A. D., and C. R. Hutchinson. "Bacteriophages of Saccharopolyspora erythraea." Journal of Bacteriology 169, no. 7 (1987): 3013–22. http://dx.doi.org/10.1128/jb.169.7.3013-3022.1987.

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42

Doll, D. C., and R. B. Weiss. "Neoplasia and the erythron." Journal of Clinical Oncology 3, no. 3 (March 1985): 429–46. http://dx.doi.org/10.1200/jco.1985.3.3.429.

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Neoplasms may affect the erythroid system in a variety of ways. By far the most common abnormality associated with neoplastic disorders is anemia. It is important to recognize that there are multiple causes of anemia associated with neoplasms, because therapy of the anemia varies according to the causative mechanism. Less commonly, the paraneoplastic syndrome of erythrocytosis may occur in some patients with neoplasia. More subtle abnormalities of the erythrocytes associated with malignant disease include modification of the RBC membrane, changes in erythrocyte enzymes, and abnormalities in hemoglobin production. Clinical awareness of the multiple effects of neoplasms on the erythron will lead to better patient management and may also improve our understanding of erythropoiesis.
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43

Weisshaar, E., U. Kallen, N. Klintworth, and J. Zenk. "Pruritus, Erytheme & Co." HNO 59, no. 3 (March 2011): 301–10. http://dx.doi.org/10.1007/s00106-011-2260-9.

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44

Shen, Xinhua, and Adriaan Van Heiningen. "Synthesis of β-O-4 lignin model dimers and their chlorinated derivatives." Canadian Journal of Chemistry 70, no. 6 (June 1, 1992): 1754–61. http://dx.doi.org/10.1139/v92-220.

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The unknown lignin model dimers with hydroxymethyl group at the para position of the phenoxy moiety and their chlorinated derivatives (compounds 1–13, except 8) have been synthesized. During the preparation of 6 from 5, a byproduct was isolated and identified as 9. The compounds 4, 7, and 8 were obtained as a mixture of erythro and threo isomers in the ratio of about 5:4, estimated from their 13C NMR spectra, and the erythro isomer 8a was crystallized from the mixture. Chlorinated derivatives 12a (erythro) and 12b (threo) were also isolated. Their relative configuration was assigned on the basis of both 13C and 1H NMR spectroscopy.
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45

Vidal-Cros, A., M. Gaudry, and A. Marquet. "Interaction of L-threo and L-erythro isomers of 3-fluoroglutamate with glutamate decarboxylase from Escherichia coli." Biochemical Journal 229, no. 3 (August 1, 1985): 675–78. http://dx.doi.org/10.1042/bj2290675.

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L-threo-3-Fluoroglutamate and L-erythro-3-fluoroglutamate were tested with glutamate decarboxylase from Escherichia coli. Both isomers were substrates: the threo isomer was decarboxylated into optically active 4-amino-3-fluorobutyrate, whereas the erythro isomer lost the fluorine atom during the reaction, yielding succinic semialdehyde after hydrolysis of the unstable intermediate enamine. The difference between the two isomers demonstrates that the glutamic acid-pyridoxal phosphate Schiff base is present at the active site under a rigid conformation. Furthermore, although the erythro isomer lost the fluorine atom, yielding a reactive aminoacrylic acid in the active site, no irreversible inactivation of E. coli glutamate decarboxylase was observed.
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46

Guedes, Laura, Pedro B. P. S. Reis, Miguel Machuqueiro, Asma Ressaissi, Rita Pacheco, and Maria Luísa Serralheiro. "Bioactivities of Centaurium erythraea (Gentianaceae) Decoctions: Antioxidant Activity, Enzyme Inhibition and Docking Studies." Molecules 24, no. 20 (October 22, 2019): 3795. http://dx.doi.org/10.3390/molecules24203795.

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Centaurium erythraea is recommended for the treatment of gastrointestinal disorders and to reduce hypercholesterolemia in ethno-medicinal practice. To perform a top-down study that could give some insight into the molecular basis of these bioactivities, decoctions from C. erythraea leaves were prepared and the compounds were identified by liquid chromatography-high resolution tandem mass spectrometry (LC–MS/MS). Secoiridoids glycosides, like gentiopicroside and sweroside, and several xanthones, such as di-hydroxy-dimethoxyxanthone, were identified. Following some of the bioactivities previously ascribed to C. erythraea, we have studied its antioxidant capacity and the ability to inhibit acetylcholinesterase (AChE) and 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR). Significant antioxidant activities were observed, following three assays: free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) reduction; lipoperoxidation; and NO radical scavenging capacity. The AChE and HMGR inhibitory activities for the decoction were also measured (56% at 500 μg/mL and 48% at 10 μg/mL, respectively). Molecular docking studies indicated that xanthones are better AChE inhibitors than gentiopicroside, while this compound exhibits a better shape complementarity with the HMGR active site than xanthones. To the extent of our knowledge, this is the first report on AChE and HMGR activities by C. erythraea decoctions, in a top-down analysis, complemented with in silico molecular docking, which aims to understand, at the molecular level, some of the biological effects ascribed to infusions from this plant.
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47

Sotnikova, L. S., N. M. Shevtsova, V. V. Zhdanov, I. D. Yevtushenko, V. P. Bolotova, and M. M. Sidorova. "Structural and metabolic status of erythrocytes in patients with juvenile uterinebleedings." Bulletin of Siberian Medicine 6, no. 2 (June 30, 2007): 47–52. http://dx.doi.org/10.20538/1682-0363-2007-2-47-52.

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Study results of investigation of peripheral erythron component in patients with juvenile uterine bleedings. We found marked changes of metabolic and morphologic status of erythrocytes: decreased mean mass of their dry weight and increased number of their transformed and degenerative forms. Cytochemical studies registered decreased content of sulfa radicals and lipoproteins in cytomembranes of erythrocytes. The most marked change of peripheral erythron component was seen in yuvenile uterine bleedings which are ongoing in the setting of high plasma estrogen level.
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48

Chda, Alae, Mohamed El Kabbaoui, Paula Fresco, Dany Silva, Jorge Gonçalves, Andreia P. Oliveira, Paula B. Andrade, et al. "Centaurium Erythraea Extracts Exert Vascular Effects through Endothelium- and Fibroblast-dependent Pathways." Planta Medica 86, no. 02 (October 23, 2019): 121–31. http://dx.doi.org/10.1055/a-1023-8918.

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Abstract Centaurium erythraea is a plant used in traditional medicine for several cardiovascular disorders, namely hypertension, but there is no scientific evidence able to provide a molecular basis for its claimed antihypertensive effects. After a preliminary screen of extracts obtained from sequential extraction of C. erythraea aerial parts, effects of the methanolic fraction (MFCE) on changes in perfusion pressure of isolated rat mesenteric vascular bed (MVB) and in rat cardiac fibroblasts proliferation were investigated, gathering information on the mechanisms involved in endothelium-dependent effects and their dependence on a pro-proliferative stimulus. The HPLC-DAD determination of the phenolics content of MFCE revealed the presence of 22 phenolic compounds. MFCE reduced (63.3 ± 3.9%; n = 4) perfusion pressure in MVB and almost completely abrogated the Ang II-induced increase in cardiac fibroblasts proliferation. Reduction of the perfusion pressure caused by MFCE was endothelium-dependent and occurred in parallel with an increase in NO release. These effects were inhibited by muscarinic receptor antagonists, by L-NAME (a NO synthase inhibitor), and by ODQ (a soluble guanylate cyclase inhibitor). Experiments revealed that effects required the involvement of K+ channels, being inhibited by tetraethylamonium (TEA; a Ca2+ activated K+ channels inhibitor) and by glibenclamide (an ATP-sensitive K+ channels inhibitor). In conclusion, extracts from C. erythraea, particularly the compounds present in the MFCE, induce endothelium-dependent vasodilation and prevent fibroblast proliferation induced by angiotensin II, which can account for the claimed antihypertensive effects of C. erythraea in traditional medicine.
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49

Lee, Jung-Kul, Hyung-Moo Jung, and Sang-Yong Kim. "1,8-Dihydroxynaphthalene (DHN)-Melanin Biosynthesis Inhibitors Increase Erythritol Production in Torula corallina, and DHN-Melanin Inhibits Erythrose Reductase." Applied and Environmental Microbiology 69, no. 6 (June 2003): 3427–34. http://dx.doi.org/10.1128/aem.69.6.3427-3434.2003.

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ABSTRACT The yeast Torula corallina is a strong erythritol producer that is used in the industrial production of erythritol. However, melanin accumulation during culture represents a serious problem for the purification of erythritol from the fermentation broth. Melanin biosynthesis inhibitors such as 3,4-dihydroxyphenylalanine and 1,8-dihydroxynaphthalene (DHN)-melanin inhibitors were added to the T. corallina cultures. Only the DHN-melanin inhibitors showed an effect on melanin production, which suggests that the melanin formed during the culturing of T. corallina is derived from DHN. This finding was confirmed by the detection of a shunt product of the pentaketide pathway, flaviolin, and elemental analysis. Among the DHN-melanin inhibitors, tricyclazole was the most effective. Supplementation with tricyclazole enhanced the production of erythritol while significantly inhibiting the production of DHN-melanin and DHN-melanin biosynthetic enzymes, such as trihydroxynaphthalene reductase. The erythrose reductase from T. corallina was purified to homogeneity by ion-exchange and affinity chromatography. Purified erythrose reductase was significantly inhibited in vitro in a noncompetitive manner by elevated levels of DHN-melanin. In contrast, the level of erythrose reductase activity was unaffected by increasing concentrations of tricyclazole. These results suggest that supplemental tricyclazole reduces the production of DHN-melanin, which may lead to a reduction in the inhibition of erythrose reductase and a higher yield of erythritol. This is the first report to demonstrate that melanin biosynthesis inhibitors increase the production of a sugar alcohol in T. corallina.
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50

Baudler, Marianne, and Doris Düster. "Beiträge zur Chemie des Phosphors, 174 [1] 1,3-Diaminotriphosphan(5), H2N-PH-PH-PH-NH2, ein neues Produkt der Spaltung von weißem Phosphor mit Natrium in flüssigem Ammoniak / Contributions to the Chemistry of Phosphorus, 174 [1] 1,3-Diaminotriphosphane(5), H2N-PH-PH-PH-NH2, a Novel Product of the Cleavage of White Phosphorus with Sodium in Liquid Ammonia." Zeitschrift für Naturforschung B 42, no. 3 (March 1, 1987): 330–34. http://dx.doi.org/10.1515/znb-1987-0313.

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In the reaction of white phosphorus with sodium in liquid ammonia the hitherto unknown 1,3- diaminotriphosphane(5) (1) is formed besides other products. The composition and the structure of 1, which is only stable in liquid ammonia, have been elucidated by 31P NMR spectroscopy. Of the three possible diastereomers only the erythro,erythro-isomer 1a with transoid-oriented NH2 groups is present
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