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Gianfranco Sebastio Ornella Castiglione Barbara Incerti Donatello Salvatore Francesca Santamaria 《Human genetics》1990,85(4):430-431
Summary Fifty one independent cystic fibrosis (CF) families originating from a restricted area of Southern Italy (Campania) have been
analyzed for KM19 and XV2c haplotypes and the ΔF508 mutation: 54% of the total CF chromosomes show the ΔF508 mutation. No
significative correlations were obtained when clinical score, radiological score,Pseudomonas colonization, or clinical symptoms at presentation were matched with the presence or absence of the ΔF508 mutation. 相似文献
3.
Journal of Ethology - Expelling indigestible objectives through the cloaca is an important cleansing behaviour for several species of higher vertebrates. Although intestinal eversions are short in... 相似文献
4.
Vincenzo Pavone Angelina Lombardi Michele Saviano Benedetto Di Blasio Flavia Nastri Roberto Fattorusso Ornella Maglio Carla Isernia 《Biopolymers》1994,34(11):1505-1515
In the present paper we describe the synthesis, purification, single crystal x-ray analysis, and solution structural characterization by nmr spectroscopy, combined with restrained molecular dynamic simulations, of the cyclic hexapeptide cyclo-(Pro-Phe-β-Ala-Phe-Phe-β-Ala). The peptide was synthesized by classical solution methods and the cyclization of the free hexapeptide was accomplished in good yields in diluted methylenechloride solution using N, N-dicyclohexyl-carbodiimide. The compound crystallizes in the monoclinic space group P21 from methanol/ethyl acetate. The molecule adopts in the solid state a conformation characterized by cis β-Ala6-Pro1 peptide bond. The α-amino acid residues are at the corner positions of turned structures. The Pro1-Phe2 segment is incorporated in a pseudo type I β-turn, while Phe4-Phe5 is in a typical type I β-turn. Assignment of all 1H and 13C resonances was achieved by homo- and heteronuclear two-dimensional techniques in dimethylsulfoxide (DMSO) solutions. The conformational analysis was based on inter-proton distances derived from rotating frame nuclear Overhauser effect spectroscopy spectra and homonuclear coupling constants. Restrained molecular dynamic simulation in vacuo was also performed to built refined molecular models. The molecule is present in DMSO solution as two slowly interconverting conformers, characterized by a cis-tran isomerism around the β-Ala6-Pro1 peptide bond. This work confirms our expectations on the low propensity of β-alanyl residues to be positioned at the corners of turned structure. © 1994 John Wiley & Sons, Inc. 相似文献
5.
Riccardo Danielli Roberto Patuzzo Anna Maria Di Giacomo Gianfranco Gallino Andrea Maurichi Annabella Di Florio Ornella Cutaia Andrea Lazzeri Carolina Fazio Clelia Miracco Leonardo Giovannoni Giuliano Elia Dario Neri Michele Maio Mario Santinami 《Cancer immunology, immunotherapy : CII》2015,64(8):999-1009
6.
Identification of proteins capable of metal reduction from the proteome of the Gram‐positive bacterium Desulfotomaculum reducens MI‐1 using an NADH‐based activity assay 下载免费PDF全文
Anne Elyse Otwell Robert W. Sherwood Sheng Zhang Ornella D. Nelson Zhi Li Hening Lin Stephen J. Callister Ruth E. Richardson 《Environmental microbiology》2015,17(6):1977-1990
Understanding of microbial metal reduction is based almost solely on studies of Gram‐negative organisms. In this study, we focus on Desulfotomaculum reducens MI‐1, a Gram‐positive metal reducer whose genome lacks genes with similarity to any characterized metal reductase. Using non‐denaturing separations and mass spectrometry identification, in combination with a colorimetric screen for chelated Fe(III)‐NTA reduction with NADH as electron donor, we have identified proteins from the D. reducens proteome not previously characterized as iron reductases. Their function was confirmed by heterologous expression in Escherichia coli. Furthermore, we show that these proteins have the capability to reduce soluble Cr(VI) and U(VI) with NADH as electron donor. The proteins identified are NADH : flavin oxidoreductase (Dred_2421) and a protein complex composed of oxidoreductase flavin adenine dinucleotide/NAD(P)‐binding subunit (Dred_1685) and dihydroorotate dehydrogenase 1B (Dred_1686). Dred_2421 was identified in the soluble proteome and is predicted to be a cytoplasmic protein. Dred_1685 and Dred_1686 were identified in both the soluble as well as the insoluble protein fraction, suggesting a type of membrane association, although PSORTb predicts both proteins are cytoplasmic. This study is the first functional proteomic analysis of D. reducens and one of the first analyses of metal and radionuclide reduction in an environmentally relevant Gram‐positive bacterium. 相似文献
7.
Paola Perucca Sabrina Sommatis Roberto Mocchi Ennio Prosperi Lucia Anna Stivala Ornella Cazzalini 《Cell cycle (Georgetown, Tex.)》2015,14(24):3920-3928
DNA damage binding protein 2 (DDB2) is a protein involved in the early step of DNA damage recognition of the nucleotide excision repair (NER) process. Recently, it has been suggested that DDB2 may play a role in DNA replication, based on its ability to promote cell proliferation. We have previously shown that DDB2 binds PCNA during NER, but also in the absence of DNA damage; however, whether and how this interaction influences cell proliferation is not known. In this study, we have addressed this question by using HEK293 cell clones stably expressing DDB2Wt protein, or a mutant form (DDB2Mut) unable to interact with PCNA. We report that overexpression of the DDB2Mut protein provides a proliferative advantage over the wild type form, by influencing cell cycle progression. In particular, an increase in the number of S-phase cells, together with a reduction in p21CDKN1A protein level, and a shorter cell cycle length, has been observed in the DDB2Mut cells. These results suggest that DDB2 influences cell cycle progression thanks to its interaction with PCNA. 相似文献
8.
?ivind ?rstavik Ornella Manfra Kjetil Wessel Andressen Geir ?ystein Andersen Tor Skomedal Jan-Bj?rn Osnes Finn Olav Levy Kurt Allen Krobert 《PloS one》2015,10(3)
Aims
We recently published that the positive inotropic response (PIR) to levosimendan can be fully accounted for by phosphodiesterase (PDE) inhibition in both failing human heart and normal rat heart. To determine if the PIR of the active metabolite OR-1896, an important mediator of the long-term clinical effects of levosimendan, also results from PDE3 inhibition, we compared the effects of OR-1896, a representative Ca2+ sensitizer EMD57033 (EMD), levosimendan and other PDE inhibitors.Methods
Contractile force was measured in rat ventricular strips. PDE assay was conducted on rat ventricular homogenate. cAMP was measured using RII_epac FRET-based sensors.Results
OR-1896 evoked a maximum PIR of 33±10% above basal at 1 μM. This response was amplified in the presence of the PDE4 inhibitor rolipram (89±14%) and absent in the presence of the PDE3 inhibitors cilostamide (0.5±5.3%) or milrinone (3.2±4.4%). The PIR was accompanied by a lusitropic response, and both were reversed by muscarinic receptor stimulation with carbachol and absent in the presence of β-AR blockade with timolol. OR-1896 inhibited PDE activity and increased cAMP levels at concentrations giving PIRs. OR-1896 did not sensitize the concentration-response relationship to extracellular Ca2+. Levosimendan, OR-1896 and EMD all increased the sensitivity to β-AR stimulation. The combination of either EMD and levosimendan or EMD and OR-1896 further sensitized the response, indicating at least two different mechanisms responsible for the sensitization. Only EMD sensitized the α1-AR response.Conclusion
The observed PIR to OR-1896 in rat ventricular strips is mediated through PDE3 inhibition, enhancing cAMP-mediated effects. These results further reinforce our previous finding that Ca2+ sensitization does not play a significant role in the inotropic (and lusitropic) effect of levosimendan, nor of its main metabolite OR-1896. 相似文献9.
Angelo Campanozzi Sonia Avallone Antonio Barbato Roberto Iacone Ornella Russo Gianpaolo De Filippo Giuseppina D’Angelo Licia Pensabene Basilio Malamisura Gaetano Cecere Maria Micillo Ruggiero Francavilla Anna Tetro Giuliano Lombardi Lisa Tonelli Giuseppe Castellucci Luigi Ferraro Rita Di Biase Antonella Lezo Silvia Salvatore Silvia Paoletti Alfonso Siani Daniela Galeone Pasquale Strazzullo MINISAL-GIRCSI Program Study Group 《PloS one》2015,10(4)
Background
Hypertension is the leading cause of death in developed countries and reduction of salt intake is recommended as a key preventive measure.Objective
To assess the dietary sodium and potassium intakes in a national sample of Italian children and adolescents and to examine their relationships with BMI and blood pressure (BP) in the framework of the MINISAL survey, a program supported by the Italian Ministry of Health.Population and Methods
The study population included 1424 healthy subjects (766 boys, 658 girls) aged 6-18 years (mean age: 10.1±2.9) who were consecutively recruited in participating National Health Service centers in 10 Italian regions. Electrolyte intake was estimated from 24 hour urine collections tested for completeness by the concomitant measurement of creatinine content. Anthropometric indices and BP were measured with standardized procedures.Results
The average estimated sodium intake was 129 mmol (7.4 g of salt) per day among boys and 117 mmol (6.7 g of salt) among girls. Ninety-three percent of the boys and 89% of the girls had a consumption higher than the recommended age-specific standard dietary target. The estimated average daily potassium intakes were 39 mmol (1.53 g) and 36 mmol (1.40 g), respectively, over 96% of the boys and 98% of the girls having a potassium intake lower than the recommended adequate intake. The mean sodium/potassium ratio was similar among boys and girls (3.5 and 3.4, respectively) and over 3-fold greater than the desirable level. Sodium intake was directly related to age, body mass and BP in the whole population.Conclusions
The Italian pediatric population is characterized by excessive sodium and deficient potassium intake. These data suggest that future campaigns should focus on children and adolescents as a major target in the framework of a population strategy of cardiovascular prevention. 相似文献10.
Adriano Sofo Antonio Scopa Michele Manfra Mauro De Nisco Giancarlo Tenore Jacopo Troisi Raffaele Di Fiori Ettore Novellino 《Plant Growth Regulation》2011,65(2):421-425
The aim of this research was to explain the direct plant growth-promoting activity of Trichoderma harzianum strain T-22 (T22), hypothesizing the involvement of different classes of plant growth regulators. Seven days after the transfer
to root-inducing medium, in vitro-cultured shoots of GiSeLa6? (Prunus cerasus × P. canescens) were inoculated with T22. Root and shoot growth were significantly affected by T22 (+76 and +61%, respectively). Ten days
after inoculation, the levels of indole-3-acetic acid (IAA), trans-zeatin riboside (t-ZR), dihydrozeatin riboside (DHZR), gibberellic acid (GA3) and abscisic acid (ABA) were analyzed by high performance liquid
chromatography coupled with mass spectrometry. The results showed that after T22-inoculation, IAA and GA3 significantly increased
in both leaves (+49 and +71%, respectively) and roots (+40 and +143%, respectively) whereas t-ZR decreased (−51% in leaves and −37% in roots). Changes in DHZR were observed in T22-inoculated roots (−32%) but not in
leaves, whereas the levels of ABA did not differ between the two treatments. The extraction method allowed the simultaneous
extraction of phytohormones. There is evidence that the change in phytohormone levels is one of the direct mechanism by which
T22 promotes rooting and shoot growth, with notable advantages for rootstock production during nursery processes. 相似文献