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排序方式: 共有92条查询结果,搜索用时 15 毫秒
21.
Roberto Giorda M. Clara Bonaglia Silvana Beri Francesca Novara Jill Urquhart Claudio Zucca Susan Marelli Daniela Di Benedetto Girolamo A. Vitello Santina Reitano Francesca Bisulli Massimo Mastrangelo Luigina Spaccini Elena Fontana Jill Clayton-Smith Philippe Jonveaux Marco Seri Bernardo dalla Bernardina 《American journal of human genetics》2009,85(3):394-400
Submicroscopic copy-number variations make a considerable contribution to the genetic etiology of human disease. We have analyzed subjects with idiopathic mental retardation (MR) by using whole-genome oligonucleotide-based array comparative genomic hybridization (aCGH) and identified familial and de novo recurrent Xp11.22-p11.23 duplications in males and females with MR, speech delay, and a peculiar electroencephalographic (EEG) pattern in childhood. The size of the duplications ranges from 0.8–9.2 Mb. Most affected females show preferential activation of the duplicated X chromosome. Carriers of the smallest duplication show X-linked recessive inheritance. All other affected individuals present dominant expression and comparable clinical phenotypes irrespective of sex, duplication size, and X-inactivation pattern. The majority of the rearrangements are mediated by recombination between flanking complex segmental duplications. The identification of common clinical features, including the typical EEG pattern, predisposing genomic structure, and peculiar X-inactivation pattern, suggests that duplication of Xp11.22-p11.23 constitutes a previously undescribed syndrome. 相似文献
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Discovery and structure–activity relationship of a novel spirocarbamate series of NPY Y5 antagonists
Colin P. Leslie Jonathan Bentley Matteo Biagetti Stefania Contini Romano Di Fabio Daniele Donati Thorsten Genski Sebastien Guery Angelica Mazzali Giancarlo Merlo Domenica A. Pizzi Fabiola Sacco Catia Seri Michela Tessari Laura Zonzini Laura Caberlotto 《Bioorganic & medicinal chemistry letters》2010,20(20):6103-6107
A novel series of trans-8-aminomethyl-1-oxa-3-azaspiro[4.5]decan-2-one derivatives was identified with potent NPY Y5 antagonist activity. Optimization of the original lead furnished compounds 23p and 23u, which combine sub-nanomolar Y5 activity with metabolic stability, oral bioavailability, brain penetration and strong preclinical profile for development. Both compounds significantly inhibited the food intake induced by a Y5 selective agonist with minimal effective doses of 3 mg/kg po. 相似文献
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Matteo Biagetti Colin Philip Leslie Angelica Mazzali Catia Seri Domenica Antonia Pizzi Jonathan Bentley Thorsten Genski Romano Di Fabio Laura Zonzini Laura Caberlotto 《Bioorganic & medicinal chemistry letters》2010,20(16):4741-4744
A novel class of small molecule NPY Y5 antagonists based around an azabicyclo[3.1.0]hexane scaffold was identified through modification of a screening hit. Structure–activity relationships and efforts undertaken to achieve a favourable pharmacokinetic profile in rat are described. 相似文献
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A short-lasting hypoglycemic effect was observed when S(-)-hydroxyhexamide (S-HH), a major metabolite of acetohexamide, and its enantiomer R(+)-hydroxyhexamide (R-HH), were administered orally to rats. Since the reductive metabolism of acetohexamide is known to be reversible in rats, oral administration of R-HH may exhibit the hypoglycemic effect through the generation of acetohexamide. However, oral administration of R-HH to rabbits, in spite of their inability to oxidize R-HH to acetohexamide, caused a significant decrease and increase, respectively, of plasma glucose and insulin levels. Furthermore, both S-HH and R-HH were found to stimulate the secretion of insulin from hamster HIT T15 cells (pancreatic beta-cells). These results provide further evidence that both R-HH and S-HH exhibit a significant hypoglycemic effect. 相似文献
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Alessandra Renieri Marco Seri Jeanne C. Myers Taina Pihlajaniemi Adalberto Sessa Gianfranco Rizzoni Mario De Marchi 《Human genetics》1992,89(1):120-121
Summary Fourteen Italian patients affected with X-linked Alport syndrome were analyzed by Southern blotting, using cDNA probes of the COL4A5 gene. One proband was shown to carry a large deletion (> 38 kb) that included the 5 part of the gene. 相似文献
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Pippucci T Savoia A Perrotta S Pujol-Moix N Noris P Castegnaro G Pecci A Gnan C Punzo F Marconi C Gherardi S Loffredo G De Rocco D Scianguetta S Barozzi S Magini P Bozzi V Dezzani L Di Stazio M Ferraro M Perini G Seri M Balduini CL 《American journal of human genetics》2011,(1):690-120
THC2, an autosomal-dominant thrombocytopenia described so far in only two families, has been ascribed to mutations in MASTL or ACBD5. Here, we show that ANKRD26, another gene within the THC2 locus, and neither MASTL nor ACBD5, is mutated in eight unrelated families. ANKRD26 was also found to be mutated in the family previously reported to have an ACBD5 mutation. We identified six different ANKRD26 mutations, which were clustered in a highly conserved 19 bp sequence located in the 5′ untranslated region. Mutations were not detected in 500 controls and are absent from the 1000 Genomes database. Available data from an animal model and Dr. Watson''s genome give evidence against haploinsufficiency as the pathogenetic mechanism for ANKRD26-mediated thrombocytopenia. The luciferase reporter assay suggests that these 5′ UTR mutations might enhance ANKRD26 expression. ANKRD26 is the ancestor of a family of primate-specific genes termed POTE, which have been recently identified as a family of proapoptotic proteins. Dysregulation of apoptosis might therefore be the pathogenetic mechanism, as demonstrated for another thrombocytopenia, THC4. Further investigation is needed to provide evidence supporting this hypothesis. 相似文献