全文获取类型
收费全文 | 437篇 |
免费 | 28篇 |
国内免费 | 5篇 |
专业分类
儿科学 | 18篇 |
妇产科学 | 9篇 |
基础医学 | 101篇 |
口腔科学 | 10篇 |
临床医学 | 46篇 |
内科学 | 115篇 |
皮肤病学 | 7篇 |
神经病学 | 48篇 |
特种医学 | 3篇 |
外科学 | 32篇 |
综合类 | 5篇 |
预防医学 | 30篇 |
眼科学 | 7篇 |
药学 | 18篇 |
中国医学 | 2篇 |
肿瘤学 | 19篇 |
出版年
2023年 | 5篇 |
2022年 | 4篇 |
2021年 | 11篇 |
2020年 | 10篇 |
2019年 | 9篇 |
2018年 | 14篇 |
2017年 | 8篇 |
2016年 | 16篇 |
2015年 | 15篇 |
2014年 | 15篇 |
2013年 | 16篇 |
2012年 | 36篇 |
2011年 | 43篇 |
2010年 | 10篇 |
2009年 | 20篇 |
2008年 | 22篇 |
2007年 | 31篇 |
2006年 | 28篇 |
2005年 | 10篇 |
2004年 | 13篇 |
2003年 | 21篇 |
2002年 | 14篇 |
2001年 | 13篇 |
2000年 | 7篇 |
1999年 | 11篇 |
1998年 | 4篇 |
1997年 | 2篇 |
1996年 | 2篇 |
1995年 | 3篇 |
1994年 | 1篇 |
1993年 | 5篇 |
1992年 | 8篇 |
1991年 | 5篇 |
1989年 | 5篇 |
1988年 | 9篇 |
1987年 | 6篇 |
1986年 | 3篇 |
1985年 | 6篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1978年 | 1篇 |
1977年 | 2篇 |
1969年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有470条查询结果,搜索用时 31 毫秒
11.
12.
Emilia Modolo Pinto Sheila A. C. Siqueira Priscilla Cukier Maria C. B. V. Fragoso Chin Jia Lin Berenice Bilharinho de Mendonca 《Pituitary》2011,14(4):400-404
Nelson’s syndrome (NS) is characterized by the appearance and/or progression of ACTH-secreting pituitary macroadenomas in
patients who had previously undergone bilateral adrenalectomy for the treatment of Cushing’s disease. Such corticotroph macroadenomas
respond poorly to currently available therapeutic options which include surgery, radiotherapy and chemotherapy. P53 protein
accumulation may be detected by immunohistochemistry in pituitary corticotroph adenomas and it has been suggested that it
might be causally related to tumor development. Wild type P53 protein plays an important role in the cellular response to
ionizing radiation and other DNA damaging agents and is mutated in many human tumors. In this study we report an adult male
patient with NS who underwent both transsphenoidal and transcranial pituitary surgeries, conventional and stereotaxic radiotherapy
and brachytherapy. Despite of the efforts to control tumor mass and growth, this macroadenoma displayed relentless growth
and aggressive behavior. DNA extracted from the first two surgical samples, as well as DNA from peripheral blood leukocytes
disclosed normal p53 sequence. DNA extracted from tumor samples obtained at surgeries performed after pituitary irradiation carried a somatic
heterozygous mutation, consisting of a deletion of four cytosines between nucleotides 12,144–12,149 in exon 4 of the p53 gene. This frameshift mutation creates a stop codon in exon 4 excluding the expression of a functional protein from the defective
allele. These data demonstrate a possible association between the P53 protein loss of function induced by radiotherapy and
the aggressive course of the disease in this patient. 相似文献
13.
Livia M. Mermejo Leticia F. Leal Leandro M. Colli Maria C.B.V. Fragoso Ana C. Latronico Luiz G. Tone Carlos A. Scrideli Silvio Tucci Carlos E. Martinelli Jose A. Yunes Maria J. Mastellaro Ana L. Seidinger Silvia R. Brandalise Ayrton C. Moreira Leandra N. Ramalho Sonir R. Antonini Margaret Castro 《Clinical endocrinology》2014,81(4):503-510
14.
15.
16.
Nonanzit Pérez-Hernández Gilberto Vargas-Alarcón Rocio Arellano-Zapoteco Nancy Martínez-Rodríguez José Manuel Fragoso Gad Aptilon-Duque Rosalinda Posadas-Sánchez Carlos Posadas-Romero Teresa Juárez-Cedillo María Lilia Domínguez-López José Manuel Rodríguez-Pérez 《Experimental and molecular pathology》2014
The purpose of the present study was to establish the role of DDAH gene polymorphisms in the risk of developing myocardial infarction (MI) in a clinical cohort of Mexican patients. One polymorphism (rs1498373) in the DDAH1 and three in the DDAH2 (rs805304, rs3131383, and rs805305) genes were performed by TaqMan genotyping assays in 473 patients with MI and 447 healthy unrelated controls. Similar distribution of DDAH1 and DDAH2 polymorphisms was observed in MI patients and healthy controls. Under a recessive model adjusted for age, gender, and obesity, the rs805304 C allele was associated with decreased risk of MI (OR = 0.70, 95% CI = 0.51–0.96, P = 0.030). The effect of the polymorphisms on various cardiovascular risk factors was analyzed. Under a recessive model adjusted for age and gender, the DDAH2 rs805304 C allele was associated with decreased risk of obesity (OR = 0.35, 95% CI = 0.22–0.57, P = 0.001). The three DDAH2 polymorphisms were in strong linkage disequilibrium. Our results suggest that the rs805304 C allele was associated with decreased risk of MI and decreased risk of obesity. 相似文献
17.
Carlos A. Vaz Fragoso MD Daniel P. Beavers PhD John L. Hankinson MD Gail Flynn RCP Kathy Berra MSN Stephen B. Kritchevsky PhD Christine K. Liu MD Mary M. McDermott MD Todd M. Manini PhD W. Jack Rejeski PhD Thomas M. Gill MD Lifestyle Interventions Independence for Elders Study Investigators 《Journal of the American Geriatrics Society》2014,62(4):622-628
18.
Belczak SQ Sincos IR Teivelis MP de Oliveira CA Fragoso H Aun R 《Revista do Instituto de Medicina Tropical de S?o Paulo》2012,54(3):171-174
Infrapopliteal mycotic aneurysm resulting from endocarditis is rare, with only a few reported cases. We describe the case of a 28-year-old male patient who was suffering with pain and edema in the right leg. The ultrasound revealed an aneurysm of the right tibioperoneal trunk and a deep vein thrombosis (DVT). The patient was admitted and developed acute congestive heart failure, being diagnosed with possible endocarditis. A pseudo-aneurysm was revealed by arteriography. Aggressive antibiotic treatment was initiated, and open surgery confirmed a mycotic pseudo-aneurysm of the tibioperoneal trunk. To our knowledge, this is the 8th case reported of an infected aneurysm in this particular location. 相似文献
19.
Vaz Fragoso CA Enright PL McAvay G Van Ness PH Gill TM 《The American journal of medicine》2012,125(1):79-86
BackgroundAmong older persons, the association between frailty and spirometry-confirmed respiratory impairment has not been evaluated yet.MethodsBy using data on white participants aged 65 to 80 years (Cardiovascular Health Study, N = 3578), we evaluated cross-sectional and longitudinal associations between frailty and respiratory impairment, including their combined effect on mortality. Baseline assessments included frailty status (Fried phenotype: non-frail, pre-frail, and frail) and spirometry. Outcomes included development of frailty features (pre-frail or frail) at year 3 and respiratory impairment (airflow limitation or restrictive pattern) at year 4, and death (median follow-up, 13.2 years).ResultsAt baseline, 48.3% of participants were pre-frail, 5.8% of participants were frail, 13.8% of participants had airflow limitation, and 9.3% of participants had restrictive pattern; 46.1% of participants subsequently died. At baseline, pre-frail and frail were cross-sectionally associated with airflow limitation (adjusted odds ratio [OR], 1.62; 95% confidence interval [CI], 1.29-2.04 and adjusted OR 1.88; 95% CI, 1.15-3.09) and restrictive pattern (adjusted OR, 1.80; 95% CI, 1.37-2.36 and adjusted OR, 3.05; 95% CI, 1.91-4.88), respectively. Longitudinally, participants with baseline frailty features had an increased likelihood of developing respiratory impairment (adjusted OR, 1.42; 95% CI, 1.11-1.82). Conversely, participants with baseline respiratory impairment had an increased likelihood of developing frailty features (adjusted OR, 1.58; 95% CI, 1.17-2.13). Mortality was highest among participants who were frail and had respiratory impairment (adjusted hazard ratio, 3.91; 95% CI, 2.93-5.22), compared with those who were non-frail and had no respiratory impairment.ConclusionFrailty and respiratory impairment are strongly associated with one another and substantially increase the risk of death when both are present. Establishing these associations may inform interventions designed to reverse or prevent the progression of either condition and to reduce adverse outcomes. 相似文献
20.
Ana Carolina Fragoso Motta Cristiane Aparecida Nogueira Bataglion Maria Cristina Foss-Freitas Milton Cesar Foss Marilena Chinali Komesu 《Clinics (S?o Paulo, Brazil)》2013,68(3):427-430