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排序方式: 共有217条查询结果,搜索用时 0 毫秒
1.
Clémence Jacquin Emilie Landais Céline Poirsier Alexandra Afenjar Ahmad Akhavi Nathalie Bednarek Caroline Bénech Adeline Bonnard Damien Bosquet Lydie Burglen Patrick Callier Sandra Chantot-Bastaraud Christine Coubes Charles Coutton Bruno Delobel Margaux Descharmes Jean-Michel Dupont Vincent Gatinois Nicolas Gruchy Sarah Guterman Abdelkader Heddar Lucas Herissant Delphine Heron Bertrand Isidor Pauline Jaeger Guillaume Jouret Boris Keren Paul Kuentz Cedric Le Caignec Jonathan Levy Nathalie Lopez Zoe Manssens Dominique Martin-Coignard Isabelle Marey Cyril Mignot Chantal Missirian Céline Pebrel-Richard Lucile Pinson Jacques Puechberty Sylvia Redon Damien Sanlaville Marta Spodenkiewicz Anne-Claude Tabet Alain Verloes Gaelle Vieville Catherine Yardin François Vialard Martine Doco-Fenzy 《American journal of medical genetics. Part A》2023,191(2):445-458
Chromosome 1p36 deletion syndrome (1p36DS) is one of the most common terminal deletion syndromes (incidence between 1/5000 and 1/10,000 live births in the American population), due to a heterozygous deletion of part of the short arm of chromosome 1. The 1p36DS is characterized by typical craniofacial features, developmental delay/intellectual disability, hypotonia, epilepsy, cardiomyopathy/congenital heart defect, brain abnormalities, hearing loss, eyes/vision problem, and short stature. The aim of our study was to (1) evaluate the incidence of the 1p36DS in the French population compared to 22q11.2 deletion syndrome and trisomy 21; (2) review the postnatal phenotype related to microarray data, compared to previously publish prenatal data. Thanks to a collaboration with the ACLF (Association des Cytogénéticiens de Langue Française), we have collected data of 86 patients constituting, to the best of our knowledge, the second-largest cohort of 1p36DS patients in the literature. We estimated an average of at least 10 cases per year in France. 1p36DS seems to be much less frequent than 22q11.2 deletion syndrome and trisomy 21. Patients presented mainly dysmorphism, microcephaly, developmental delay/intellectual disability, hypotonia, epilepsy, brain malformations, behavioral disorders, cardiomyopathy, or cardiovascular malformations and, pre and/or postnatal growth retardation. Cardiac abnormalities, brain malformations, and epilepsy were more frequent in distal deletions, whereas microcephaly was more common in proximal deletions. Mapping and genotype–phenotype correlation allowed us to identify four critical regions responsible for intellectual disability. This study highlights some phenotypic variability, according to the deletion position, and helps to refine the phenotype of 1p36DS, allowing improved management and follow-up of patients. 相似文献
2.
Genomic aberrations of the CACNA2D1 gene in three patients with epilepsy and intellectual disability
Sarah Vergult Annelies Dheedene Alfred Meurs Fran Faes Bertrand Isidor Sandra Janssens Agnès Gautier Cédric Le Caignec Bj?rn Menten 《European journal of human genetics : EJHG》2015,23(5):628-632
Voltage-gated calcium channels have an important role in neurotransmission. Aberrations affecting genes encoding the alpha subunit of these channels have been associated with epilepsy and neuropsychiatric disorders such as autism or schizophrenia. Here we report three patients with a genomic aberration affecting the CACNA2D1 gene encoding the α2δ subunit of these voltage-gated calcium channels. All three patients present with epilepsy and intellectual disability pinpointing the CACNA2D1 gene as an interesting candidate gene for these clinical features. Besides these characteristics, patient 2 also presents with obesity with hyperinsulinism, which is very likely to be caused by deletion of the CD36 gene. 相似文献
3.
Isidor Segal M.R.C.P. Hugh H. Lawson D.Sc. Bernard Rabinowitz F.R.C.S. Donald G. Hamilton M.R.C.Path. 《The American journal of gastroenterology》1982,77(11):867-874
Alcohol-induced chronic pancreatitis involving the head of pancreas may have profound effects on the hepatobiliary system. The natural history, complications, and management of the syndrome are presented, using selected cases to emphasize important features. Chronic pancreatitis can cause mechanical obstruction to both the distal common bile duct and the proximal pancreatic duct. In the common bile duct this will result in proximal dilatation above the stenosis with bile stasis. Possible sequelae are ascending cholangitis, cholecystitis, biliary calculi formation, and secondary biliary cirrhosis. The mechanical effects of stricture of the proximal pancreatic duct may exacerbate pancreatic dysfunction. The clinicopathological spectrum of chronic pancreatitis with biliary obstruction encompasses three clinical types–"transient,""recurrent." and "persistent." The widespread effects of the syndrome are evident from the involvement of pancreas, proximal pancreatic duct, papilla of Vater, liver, peripheral biliary tree, common bile duct, gallbladder, and reticuloendothelial system. Essential to management is surgery which should be considered when there is objective evidence of obstruction to the common bile duct. Choledochoduodenostomy is the preferred type of operation. If dilatation is mild and jaundice transient, conservative therapy with careful observation is advocated. 相似文献
4.
N. Chassaing A. Causse A. Vigouroux A. Delahaye J.‐L. Alessandri O. Boespflug‐Tanguy O. Boute‐Benejean H. Dollfus B. Duban‐Bedu B. Gilbert‐Dussardier F. Giuliano M. Gonzales M. Holder‐Espinasse B. Isidor M.‐L. Jacquemont D. Lacombe D. Martin‐Coignard M. Mathieu‐Dramard S. Odent O. Picone L. Pinson C. Quelin S. Sigaudy A. Toutain C. Thauvin‐Robinet Josseline Kaplan Patrick Calvas 《Clinical genetics》2014,86(4):326-334
Anophthalmia and microphthalmia (AM) are the most severe malformations of the eye, corresponding respectively to reduced size or absent ocular globe. Wide genetic heterogeneity has been reported and different genes have been demonstrated to be causative of syndromic and non‐syndromic forms of AM. We screened seven AM genes [GDF6 (growth differentiation factor 6), FOXE3 (forkhead box E3), OTX2 (orthodenticle protein homolog 2), PAX6 (paired box 6), RAX (retina and anterior neural fold homeobox), SOX2 (SRY sex determining region Y‐box 2), and VSX2 (visual system homeobox 2 gene)] in a cohort of 150 patients with isolated or syndromic AM. The causative genetic defect was identified in 21% of the patients (32/150). Point mutations were identified by direct sequencing of these genes in 25 patients (13 in SOX2, 4 in RAX, 3 in OTX2, 2 in FOXE3, 1 in VSX2, 1 in PAX6, and 1 in GDF6). In addition eight gene deletions (five SOX2, two OTX2 and one RAX) were identified using a semi‐quantitative multiplex polymerase chain reaction (PCR) [quantitative multiplex PCR amplification of short fluorescent fragments (QMPSF)]. The causative genetic defect was identified in 21% of the patients. This result contributes to our knowledge of the molecular basis of AM, and will facilitate accurate genetic counselling. 相似文献
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7.
Blepharophimosis,short humeri,developmental delay and hirschsprung disease: Expanding the phenotypic spectrum of MED12 mutations 下载免费PDF全文
Bertrand Isidor Tiphaine Lefebvre Claudine Le Vaillant Gaëlle Caillaud Laurence Faivre Frédéric Jossic Madeleine Joubert Norbert Winer Cédric Le Caignec Guntram Borck Anna Pelet Jeanne Amiel Annick Toutain Nathalie Ronce Martine Raynaud Alain Verloes Albert David 《American journal of medical genetics. Part A》2014,164(7):1821-1825
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9.
Paul Kruszka Tommy Hu Sungkook Hong Rebecca Signer Benjamin Cogné Betrand Isidor Sarah E. Mazzola Jacques C. Giltay Koen L. I. van Gassen Eleina M. England Lynn Pais Charlotte W. Ockeloen Pedro A. Sanchez‐Lara Esther Kinning Darius J. Adams Kayla Treat Wilfredo Torres‐Martinez Maria F. Bedeschi Maria Iascone Stephanie Blaney Oliver Bell Tiong Y. Tan Marie‐Ange Delrue Julie Jurgens Brenda J. Barry Elizabeth C. Engle Sarah K. Savage Nicole Fleischer Julian A. Martinez‐Agosto Kym Boycott Elaine H. Zackai Maximilian Muenke 《American journal of medical genetics. Part A》2019,179(10):2075-2082
Zinc finger protein 462 (ZNF462) is a relatively newly discovered vertebrate specific protein with known critical roles in embryonic development in animal models. Two case reports and a case series study have described the phenotype of 10 individuals with ZNF462 loss of function variants. Herein, we present 14 new individuals with loss of function variants to the previous studies to delineate the syndrome of loss of function in ZNF462. Collectively, these 24 individuals present with recurring phenotypes that define a multiple congenital anomaly syndrome. Most have some form of developmental delay (79%) and a minority has autism spectrum disorder (33%). Characteristic facial features include ptosis (83%), down slanting palpebral fissures (58%), exaggerated Cupid's bow/wide philtrum (54%), and arched eyebrows (50%). Metopic ridging or craniosynostosis was found in a third of study participants and feeding problems in half. Other phenotype characteristics include dysgenesis of the corpus callosum in 25% of individuals, hypotonia in half, and structural heart defects in 21%. Using facial analysis technology, a computer algorithm applying deep learning was able to accurately differentiate individuals with ZNF462 loss of function variants from individuals with Noonan syndrome and healthy controls. In summary, we describe a multiple congenital anomaly syndrome associated with haploinsufficiency of ZNF462 that has distinct clinical characteristics and facial features. 相似文献
10.
Mutations of the Imprinted CDKN1C Gene as a Cause of the Overgrowth Beckwith–Wiedemann Syndrome: Clinical Spectrum and Functional Characterization 下载免费PDF全文
Frederic Brioude Irène Netchine Francoise Praz Marilyne Le Jule Claire Calmel Didier Lacombe Patrick Edery Martin Catala Sylvie Odent Bertrand Isidor Stanislas Lyonnet Sabine Sigaudy Bruno Leheup Séverine Audebert‐Bellanger Lydie Burglen Fabienne Giuliano Jean‐Luc Alessandri Valérie Cormier‐Daire Fanny Laffargue Sophie Blesson Isabelle Coupier James Lespinasse Patricia Blanchet Odile Boute Clarisse Baumann Michel Polak Berenice Doray Alain Verloes Géraldine Viot Yves Le Bouc Sylvie Rossignol 《Human mutation》2015,36(9):894-902
Beckwith–Wiedemann syndrome (BWS) is an imprinting disorder associating macroglossia, abdominal wall defects, visceromegaly, and a high risk of childhood tumor. Molecular anomalies are mostly epigenetic; however, mutations of CDKN1C are implicated in 8% of cases, including both sporadic and familial forms. We aimed to describe the phenotype of BWS patients with CDKN1C mutations and develop a functional test for CDKN1C mutations. For each propositus, we sequenced the three exons and intron–exon boundaries of CDKN1C in patients presenting a BWS phenotype, including abdominal wall defects, without 11p15 methylation defects. We developed a functional test based on flow cytometry. We identified 37 mutations in 38 pedigrees (50 patients and seven fetuses). Analysis of parental samples when available showed that all mutations tested but one was inherited from the mother. The four missense mutations led to a less severe phenotype (lower frequency of exomphalos) than the other 33 mutations. The following four tumors occurred: one neuroblastoma, one ganglioneuroblastoma, one melanoma, and one acute lymphoid leukemia. Cases of BWS caused by CDKN1C mutations are not rare. CDKN1C sequencing should be performed for BWS patients presenting with abdominal wall defects or cleft palate without 11p15 methylation defects or body asymmetry, or in familial cases of BWS. 相似文献