Search results for "PLASMA"

Genetic polymorphism of human complement factor I (C3b inactivator) in the Chinese Han population.

1999

The human complement factor I (IF) polymorphism has been analysed by polyacrylamide gel isoelectric focusing electrophoresis of neuraminidase-treated EDTA plasma samples followed by immunoblotting and enzymatic detection. In a population study among 121 random individuals from Chengdu, PR China, three different common phenotypes were observed. The results show that IF is polymorphic in the Chinese population. The allele frequencies were as follows: FI*A = 0.153, FI*B = 0.847. The distribution of observed phenotypes was in accordance with the Hardy-Weinberg equilibrium. In comparison to other Asian population studies, the frequency of the IF*A allele was the highest in the Chinese population…

Corrigendum to “Genetic characterization of Anaplasma phagocytophilum strains from goats (Capra aegagrus hircus) and water buffalo (Bubalus bubalis) …

2021

Invasion biology and host specificity of the grapevine yellows disease vector Hyalesthes obsoletus in Europe

2008

Within the past 10 years, the yellows disease ‘bois noir’ (BN) has become one of the commercially most important diseases of grapevine [ Vitis vinifera L. (Vitaceae)] in Europe. Infection pressure is caused by phytoplasmas of the stolbur 16SrXII-A group that are transmitted by a planthopper vector, Hyalesthes obsoletus Signoret (Homoptera: Auchenorrhyncha). Infestation happens as an accidental side-effect of the feeding behaviour of the vector, as vector and pathogen proliferation is dependent on other plants. In Germany, the increase of BN is correlated with the use of a new host plant by the vector, increase in abundance of the vector on the new host plant, and dissemination of host plant…

Survival relative to new and ancestral host plants, phytoplasma infection, and genetic constitution in host races of a polyphagous insect disease vec…

2014

Dissemination of vectorborne diseases depends strongly on the vector's host range and the pathogen's reservoir range. Because vectors interact with pathogens, the direction and strength of a vector's host shift is vital for understanding epidemiology and is embedded in the framework of ecological specialization. This study investigates survival in host-race evolution of a polyphagous insect disease vector, Hyalesthes obsoletus, whether survival is related to the direction of the host shift (from field bindweed to stinging nettle), the interaction with plant-specific strains of obligate vectored pathogens/symbionts (stolbur phytoplasma), and whether survival is related to genetic differentia…

An innovative multi-analytical approach based on spectroscopic and electrochemical techniques to study a complex Roman amphorae collection

2020

Abstract An innovative multi-analytical approach for the classification of ancient pottery sherds was tested. Twenty Roman amphorae fragments belonging to different known typologies and twenty-seven unclassified ones from a complex Sagunto Archaeological Museum (Spain) collection were studied by multielement analysis (X-ray fluorescence spectroscopy and inductively coupled plasma mass spectrometry), Fourier-transform near infrared spectroscopy and voltammetry of immobilized microparticles employing a minimal amount of sample. Chemometric analysis based on principal component analysis allowed the identification of most of the unclassified samples, proving the importance and reliability of th…

The determination of certain major and minor elements in geological samples by inductively coupled plasma atomic emission spectrometry. Some interfer…

2000

Direct ICP-AES measurements of the digested geological standard reference material samples yielded the wrong information about their composition. The differences between certified and measured concentrations of the samples were due to the complicated sample matrix. The measured concentrations can be successfully corrected by using a multiple linear regression technique. The correction is based on the multiple regression line calculated from the analytical results at synthetic mixtures of matrix elements, where concentrations varied on five levels. There were no significant (P = 0.05) differences between certified and measured concentrations in standard reference materials after the correcti…

Aspetti colturali e valorizzazione di officinali per impieghi agro-industiali

2009

L’uso delle piante officinali in Sicilia è stato rilevante sin da epoche remote. Ciò, oltre ad essere documentato dalla molteplicità di conoscenze tramandate dalla tradizione popolare, è desumibile dall’importanza che in passato hanno assunto alcune colture come frassino da manna, sommacco, mirto, ecc. Tale interesse è ampiamente giustificato dalla cospicua presenza di specie officinali, ricche di principi attivi, nella flora nativa locale. La Sicilia, quindi, possiede un potenziale serbatoio finora utilizzato in modo parziale, imperfetto ed empirico. Dalla coltivazione dei biotipi locali è possibile ottenere un prodotto di alta qualità e omogeneità. Per le coltivazioni specializzate si pon…

Prove di coltivazione di Camomilla comune (Chamomilla recutita Rausch.) nell’ambiente semiarido mediterraneo.

2009

La Camomilla comune (Chamomilla recutita (L.) Rausch) è una pianta erbacea annuale originaria del sud-est asiatico, che oggi, grazie alle sue riconosciute proprietà calmanti e sedative, è largamente diffusa e coltivata in tutto il mondo. In tempi recenti, un forte interesse verso la specie deriva anche dalla sua possibilità di utilizzazione in svariate branche dell’industria, dalla farmaceutica (che ne sfrutta le proprietà sedative e antinfiammatorie), alla cosmetica (che la utilizza per la preparazione di creme, detergenti, profumi e shampoo), all’alimentare (che ne fa uso per bevande, dolci, gelati, liquori e vermouth). La larga diffusione della specie fa sì che in larga parte la sua tecn…

Oxidative stress is associated with an increased antioxidant defense in elderly subjects: a multilevel approach.

2014

© 2014 Fonseca et al. Background: Studies of associations between plasma GSH-Px activity and cardiovascular risk factors have been done in humans, and contradictory results have been reported. The aim of our study was to assess the association between the scavenger antioxidant enzyme glutathione peroxidase (GSH-Px) activity in plasma and the presence of novel and classical cardiovascular risk factors in elderly patients. Copyright: Methods: We performed a cross-sectional study with baseline data from a subsample of the PREDIMED (PREvención con DIeta MEDiterránea) study in Spain. Participants were 1,060 asymptomatic subjects at high risk for cardiovascular disease (CVD), aged 55 to 80, selec…

Oxidative stress is related to frailty, not to age or sex, in a geriatric population: lipid and protein oxidation as biomarkers of frailty.

2014

Objectives: To ascertain whether indicators of oxidative damage to lipids (malondialdehyde (MDA)) and proteins (protein carbonylation) are biomarkers of frailty, after adjusting for age, sex, and other possible confounders. Design: Cross-sectional cohort study. Setting: Community. Participants: Toledo Study for Healthy Aging participants (N = 742, aged 65–95), classified as frail (n = 54), prefrail (n = 278) and nonfrail (n = 410) according to the Fried criteria. Measurements: Blood plasma was obtained using centrifugation (1,500 G, 15 minutes) and immediately frozen at −80°C. Plasma lipid peroxidation was determined by measuring the MDA formed from lipoperoxides using high-performance liqu…