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Variation of Bioactive Compounds in Hypericum perforatum Growing in Turkey During Its Phenological Cycle

Journal of Integrative Plant Biology 2007年第5期49卷 615-620页

作者： Cüneyt Cirak Jolita Radusiěne Birsen (Saglam) Karabük Valdimaras Janulis Liudas Ivanauskas Faculty of Agriculture Department of Agronomy University of Ondokuz Mayis Samsun 55139 Turkey Institute of Botany Zaliuju ezeru Vilnius LT-08406 Lithuania Kaunas University of Medicine Kaunas LT-44307 Lithuania

The present study was conducted to determine phenologic and morphogeneUc variation of hyperlcln, chlorogenlc acid and flavonoids, as rutin, hyperoside, apigenin-7-O-glucoside, quercitrin, quercetin content of Hypericum perforatum L. growing in Turkey. Wild growing plants were harvested at vegetative, floral budding, full flowering, fresh frulUng and mature fruiting stages and dissected into stem, leaf and reproductive tissues and assayed for bioacUve compounds by the High performance liquid chromatography （HPLC） method. Hypericin concentration ranged between 0 and 2.73 mg/g DW, chlorogenic acid 0.00-3.64 mg/g DW, rutin 0.00-3.36 mg/g DW, hyperoside 0.04- 22.42 mg/g DW, quercitrin 0.03-3.46 mg/g DW and quercetin 0.04-1.02 mg/g DW depending on ontogenetic and morphogenetic sampling. Leaves were found to be superior to stems and reproductive parts with regard to phenolic accumulation for all compounds tested while flowers accumulated the highest levels of hypericln. Quercltrln, quercetln and hypericin content in all tissues increased with advancing of developmental stages and reached their highest level during flower ontogenesis. Similarly, chlorogenic acid, hyperoside and apigenin-7-O-glucoside content in different plant parts increased during plant development, however, the highest level was observed at different stages of plant phenology for each tissue. Chlorogenic acid was not detected in stems, leaves and reproductive parts in several stages of plant phenology and its variation during plant growth showed inconsistent ma.ner. In contrast to the other compounds examined, rutin content of stems and leaves decreased with advanc- ing of plant development and the highest level for both tissues was observed at the vegetative stage. However, content of the same compound in reproductive parts was the highest at mature fruiting. The present findings might be useful to obtain increased concentration of these natural compounds.

关键词： chiorogenic acid flavonoids hypericin Hypericum perforatum morphogenetic variation phenologic variation.

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Chemical characterization of essential oil from the leaves of Callistemon viminalis(D.R.) and Melaleuca leucadendron(Linn.)

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Asian Pacific Journal of Tropical Biomedicine 2017年第4期7卷 347-351页

作者： Rokhaya Fall Saliou Ngom Dienaba Sall Mbacke Sembène Abdoulaye Samb Laboratory of Natural Products Department of ChemistryFaculty of Science and TechnologyCheikh Anta Diop University Center for the Development of Horticulture Senegalese Institute of Agricultural Research Laboratory of Entomology Department of Animal BiologyFaculty of Science and TechnologyCheikh Anta Diop University

Objective: To isolate and identify the compounds in the essential oils from the leaves of Callistemon viminalis(D.R.) and Melaleuca leucadendron(Linn.) collected in Dakar,***: The essential oils from the leaves of these two myrtaceaes were extracted by steam distillation and analyzed by gas chromatograph and gas chromatography–mass ***: A total of 34 constituents were identified in the oil of Callistemon viminalis and the major compounds were 1.8-cineole(58.12%), limonene(9.72%), a-terpineol(9.56%),geranial(6.02%), d-elemene(3.53%), myrcene(2.96%) and a-pinene(2.49%).For the essential oil of Melaleuca leucadendron, 43 constituents were identified, and 1.8-cineole(28.87%), epiglobulol(23.06%), a-pinene(12.22%), limonene(11.65%) and a-terpineol(7.06%) were major ***: Considering properties of the identified major compounds, essential oils of both studied myrtaceae could be used in the medicine field including the food, pharmaceutical and cosmetic industry.

关键词： Callistemon viminalis Melaleuca leucadendron Essential oil Chemical composition

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Quantifying post logging biomass loss using satellite images and ground measurements in Southeast Cameroon

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Journal of Forestry Research 2016年第6期27卷 1415-1426页

作者： Richard Sufo Kankeu Denis Jean Sonwa ichard Eba’a Atyi Noelle Marlène Moankang Nkal Center for International Forestry Research (CIFOR) PO Box 2008 Messa Yaounde Cameroon University of Ma.ne-Lemans Avenue Olivier Messiaen72085 Le Mans France FASA University of Dschang PO Box 222 DschangCameroon

Forest logging in the Congo Basin has led to forest fragmentation due to logging infrastructures and felling gaps. In the same vein, forest concessions in the Congo Basin have increasing interest in the REDD＋ mechanism. However, there is little information or field data on carbon emissions from forest degradation caused by logging. To help fill this gap, Landsat 7 and 8 and SPOT 4 images of the East Region of Cameroon were processed and combined with field measurements （measurement of forest roads widths, felling gaps and log yards） to assess all disturbed areas. Also, measurements of different types of forest infrastructures helped to highlight emission factors. Forest contributes to 5.18 % of the degradation of the annual allowable cut （AAC）（84.53 ha） corresponding to 4.09 % of forest carbon stock （6.92 t ha^-1）. Felling gaps constitute the primary source of degradation, represented an estimated area of 32.41 ha （2 % of the cutting area） far ahead of primary roads （18.44ha） and skid trails （16.36 ha）. Assessment of the impact of degradation under the canopy requires the use of high resolution satellite images and field surveys.

关键词： Forest logging Eastern Cameroon Carbon Satellite images REDD+

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Myxomycetes from Papua.new Guinea and new Caledonia

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Fungal Diversity 2013年第2期59卷 33-44页

作者： Henrik Kylin David W.Mitchell El-Hacène Seraoui Bart Buyck Department of Water and Environmental Studies Linköping UniversitySE-58183 LinköpingSweden Walton Cottage Upper HartfieldEast SussexTN74ANEnglandUK 11 rue Louis Armand74100 AmbillyFrance Department of Systematics and Evolution CP39 UMR7205Muséum national d’Histoire naturelle75005 ParisFrance

We present a compilation of all myxomycetes recorded from Papua.new Guinea(PNG)and new Caledonia(NC).Specimens were collected during field trips in September 1983–January 1984 to both territories and in August 1991,October 2007,and April 2009 to *** and dung samples for moist chamber cultures were collected during the field trips in September 1983–January 1984(PNG and NC)and in August 1991 and October 2007(NC).In addition,information from previous publications and unpublished specimens in the herbarium at the Plant Protection Instituted in Port Moresby,PNG,are included.A total of 180 species are *** the 63 species from PNG 51 are new to the country,and 123 of the 149 species from NC are new to the territory.

关键词： Mycetozoa Myxomycota Amoebozoa Slime moulds Southwest Pacific

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Prevalence of hepatitis B surface antiginaemia among newly employed staff of University of Calabar Teaching Hospital

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Asian Pacific Journal of Tropical Medicine 2009年第3期2卷 74-76页

作者： Gyuse AN Udonwa.ne Okokon IB Ibanga I Ogbonna UK Department of Family Medicine University of Calabar Teaching HospitalCalabarCross River StateNigeria Department of Haematology University of Calabar Teaching HospitalCalabarCross River StateNigeria

Objective:This study aimed to determine the prevalence of Hepatitis B antigen among newly employed staff in a Tertiary Hospital in South-South ***:The medical records of a total of 238 newly employed members of staff of the University of Calabar Teaching Hospital between 2000 and 2006 were *** socio-demographic data and Hepatitis B Surface Antigen(HBSAg) results were ***:The overall prevalence of Hepatitis B Surface Antiginaemia was found to be 5.04%.The prevalence was 7.30%in males and statistically significant compared to 3.50%in ***:There is a reasonably high prevalence of HBSAg among adults prior to employment into Health Care *** poses a danger to clients seeking care in these health care facilities and other health care *** Institutions must have clear policies on engagement of new staff relating to such communicable diseases based on existing Nigerian labour laws including the Workman Compensation *** must also implement policies on universal precautions to safeguard the health workers and clients in their *** enlightenment on the National Program on Immunization(NPI) must be intensified as a strategy to reduce the prevalence of HBSAg and its attendant consequences.

关键词： Hepatitis B Antigen newly employed

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Edouard Manet

Edouard Manet

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作者： Gilles ne?ret [translation Chris Miller].

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Enhancing optical absorption in visible light of ZnO co-doped with europium and promethium by first-principles study through modified Becke and Johnson potential scheme

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Journal of Rare Earths 2019年第4期37卷 416-421页

作者： A.G.El Hachimi M.L.Ould ne A.El Yousfi A.Benyoussef A.El Kenz Laboratory of Condensed Matter and Interdisciplinary Sciences (LaMCScI) Associé Au CNRST (URAC 12) Département de Physique B.P.1014 Faculté des SciencesUniversité Mohammed V Hassan Ⅱ Academy of Science and Technology

By using first-principles calculations we studied the electronic, optical and ma.netic properties of ZnO co-doped with Eu and Pm. In this calculation, we used Wien2 k code based on full potential linearized augmented plane waves(FP-LAPW) method with the modified Becke-Johnson(mBJ) approximation. This correction gives good band gap compared to experimental band gap. The introduction of Eu and Pm codoping leads to an increase in the band gap. Electrons can transit easily from the valence band to the conduction band, which results in an enhancement of visible light absorption in a wider absorption range. Absorption spectra reach a high value in visible and infrared light regions. With the significance of the obta.ned results, the studied compounds may potentially find spintronic and optoelectronic applications.

关键词： Zinc oxide Rare earth Density functional theory Modified Becke-Johnson Ma.netic properties Spintronics

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Unraveling the morphological patterns of a subantarctic eelpout:a geometric morphometric approach

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Integrative Zoology 2023年第2期18卷 372-384页

作者： Fernanda S.ORREGO Mathias HÜne Hugo A.BENÍTEZ Mauricio F.LANDAETA Laboratorio de Ictiología e Interacciones Biofísicas(LABITI) Instituto de BiologíaFacultad de CienciasUniversidad de ValparaísoValparaísoChile Centro de Investigación para la Conservación de los Ecosistemas Australes(ICEA) Punta ArenasChile Laboratorio de Ecología y Morfometría Evolutiva Centro de Investigación de Estudios Avanzados del MauleUniversidad Católica del MauleTalcaChile Centro de Observación Marino para Estudios de Riesgos del Ambiente Costero(COSTA-R) Universidad de ValparaísoViña del MarChile Millennium Nucleus for Ecology and Conservation of Temperate Mesophotic Reef Ecosystems(NUTME) Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems(BASE) SantiagoChile

Phenotypic variation in organisms depends on the genotype and the environmental constraints of the habitat that they ***,for marine species inhabiting contrasting aquatic conditions,it is expected toﬁnd covari-ation between the shape and its spatial *** studied the morphology of the head and cephalic sensory canals of the eelpout Austrolycus depressiceps(4.5–22.5 cm TL)across its latitudinal distribution in South Paciﬁc(45°S–55°S).Geometric morphometric analyses show that the shape varied from individuals with larger snout and an extended suborbital canal to individuals with shorter snouts and frontally compressed suborbital *** was size variation across the sampled populations,but that size does not have a clear latitudinal *** 8%of the shape variation relates to this size variation(allometry),represented by a decrease in the relative size of the eye,and a depression of the posterior margin of the *** were spatial differences in the shape of the head,but these differences were probably caused by allometric ***,2 of the canals of the cephalic lateralis pores and the head shape showed modularity in its *** study shows that the morphology of marineﬁsh with a shallow distribution varies across distances of hundreds of kilometers(i.e.,phenotypic modulation).

关键词： Austrolycus depressiceps geometric morphometrics morphology phenotype spatial distribution

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Advanced gastric cancer achieving major pathologic regression after chemoimmunotherapy combined with hypofractionated radiotherapy: A case report

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World Journal of Gastrointestinal Oncology 2023年第6期15卷 1096-1104页

作者： Meng-Long Zhou Ruo-ne Xu Cong Tan Zhen Zhang Jue-Feng Wan Department of Radiation Oncology Fudan University Shanghai Cancer CenterShanghai 200032China Department of Oncology Shanghai Medical CollegeFudan UniversityShanghai 200032China Shanghai Key Laboratory of Radiation Oncology Fudan UniversityShanghai 200032China Department of Pathology Fudan University Shanghai Cancer CenterShanghai 200032China

BACKGROUND Currently,chemotherapy combined with immunotherapy is the established firstline standard treatment for advanced gastric cancer(GC).In addition,the combination of radiotherapy and immunotherapy is considered a promising treatment *** SUMMARY In this report,we present a case of achieving nearly complete remission of highly advanced GC with comprehensive therapies.A 67-year-old male patient was referred to the hospital because he presented with dyspepsia and melena for several *** on fluorodeoxyglucose positron emission tomography/computed tomography(FDG PET/CT),endoscopic examination and abdominal CT,he was diagnosed with GC with a massive lesion and two distant metastatic *** patient received mFOLFOX6 regimen chemotherapy,nivolumab and a short course of hypofractionated radiotherapy(4 Gy×6 fractions)targeting the primary *** the completion of these therapies,the tumor and the metastatic lesions showed a partial *** having this case discussed by a multidisciplinary team,the patient underwent surgery,including total gastrectomy and D2 lymph node *** pathology showed that major pathological regression of the primary lesion was *** therapy started four weeks after surgery,and examination was performed every three *** surgery,the patient has been stable and healthy with no evidence of *** The combination of radiotherapy and immunotherapy for GC is worthy of further exploration.

关键词： Gastric cancer Oligometastasis Immunotherapy Hypofractionated radiotherapy Gastrectomy Case report

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Genomic prediction of fruit texture and training population optimization towards the application of genomic selection in apple

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Horticulture Research 2020年第1期7卷 889-902页

作者： Morgane Roth Hélène Muranty Mario Di Guardo Walter Guerra Andrea Patocchi Fabrizio Costa Plant Breeding Research Division AgroscopeWädenswilZurichSwitzerland IRHS INRAEAgrocampus-OuestUniversitéd’AngersSFR 4207 QuaSaVBeaucouzéFrance Department of Genomics and Biology of Fruit Crops Research and Innovation CentreFondazione Edmund Mach(FEM)Via E.Mach 138010 San Michele all’AdigeItaly Department of Agriculture Food and Environment(Di3A)University of CataniaCataniaItaly Research Centre Laimburg Laimburg 639040 AuerItaly Center Agriculture Food Environment University of TrentoVia Mach 138010 San Michele all’AdigeItaly Present address:GAFL INRAE84140 MontfavetFrance

Texture is a complex trait and a major component of fruit quality in *** the major effect of MdPG1,a gene controlling firmness,has already been exploited in elite cultivars,the genetic basis of crispness remains poorly *** further improve fruit texture,ha.nessing loci with minor effects via genomic selection is therefore *** this study,we measured acoustic and mechanical features in 537 genotypes to dissect the firmness and crispness components of fruit *** of across-year phenotypic values for these components were calculated using a model calibrated with 8,294 SNP *** best prediction accuracies following cross-validations within the training set of 259 genotypes were obta.ned for the acoustic linear distance(0.64).Predictions for biparental families using the entire training set varied from low to high accuracy,depending on the family *** adding siblings or half-siblings into the training set did not clearly improve predictions,we performed an optimization of the training set size and composition for each validation *** allowed us to increase prediction accuracies by 0.17 on average,with a maximal accuracy of 0.81 when predicting firmness in the‘Gala’×‘Pink Lady’*** results therefore identified key genetic parameters to consider when deploying genomic selection for texture in *** particular,we advise to rely on a large training population,with high phenotypic variability from which a‘tailored training population’can be extracted using a priori information on genetic relatedness,in order to predict a specific target population.

关键词： prediction optimization fir

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