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排序方式: 共有123条查询结果,搜索用时 15 毫秒
1.
Beáta Flachner Tünde Tömöri István Hajdú Krisztina Dobi Zsolt Lőrincz Sándor Cseh György Dormán 《Medicinal chemistry research》2014,23(3):1234-1247
Target-focused libraries can be rapidly selected by 2D virtual screening methods from multimillion compounds’ databases if structures of active compounds are available. In the present study, a multi-step virtual and in vitro screening cascade is used to select melanin-concentrating hormone receptor-1 antagonists. The 2D similarity search combined with physico-chemical parameter filtering is suitable for selecting candidates from multimillion compounds’ repository. The seeds of the first round of virtual screening were collected from literature commercial databases, whereas the seeds of the second round were the hits the first round of biological testing In vitro screening underlined the efficiency of our approach, as in the second screening round the hit rate (8.6 %) significantly improved compared to the first round (1.9 %), applying a strict requirement for hit selection, and also this cascade-like screening method was appropriate for selecting several compounds reaching efficacies even below 10 nM. 相似文献
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Submillimolar levels of calcium regulates DNA structure at the dinucleotide repeat (TG/AC)n 下载免费PDF全文
A. Dobi D. v. Agoston 《Proceedings of the National Academy of Sciences of the United States of America》1998,95(11):5981-5986
Submillimolar levels of calcium, similar to the physiological total (bound + free) intranuclear concentration (0.01–1 mM), induced a conformational change within d(TG/AC)n, one of the frequent dinucleotide repeats of the mammalian genome. This change is calcium-specific, because no other tested cation induced it and it was detected as a concentration-dependent transition from B- to a non-B-DNA conformation expanding from 3′ end toward the 5′ of the repeat. Genomic footprinting of various rat brain regions revealed the existence of similar non-B-DNA conformation within a d(TG/AC)28 repeat of the endogenous enkephalin gene only in enkephalin-expressing caudate nucleus and not in the nonexpressing thalamus. Binding assays demonstrated that DNA could bind calcium and can compete with calmodulin for calcium. 相似文献
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According to the authors experiences African indigenous people can fall ill with malaria the same manner as the non-immune Europeans returning home after European residence. If the Africans live for many years in temperate country, their semi-immune status against malaria have gained in childhood dies away because of the mosquito bites do not happen in Europe. Therefore Africans who have lived for many years in temperate zone, need the same chemoprofilaxis and measures against malaria as the Europeans do if they return home. If these Africans fall ill with malaria, the illness can appear in severe form and they need firm antimalaria treatment even in an intensive care unit. 相似文献
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The new atherogenic plasma index (AIP) is a logarithmic transformation of the ratio of the molar triglyceride (TG) concentration and high density lipoprotein cholesterol (HDL-C). AIP correlates closely with the size of LDL particles (r = 0.8) and esterification rate of plasma cholesterol devoid of apo B lipoproteins (FERHDL), r = 0.9 which are considered at present the most sensitive indicators of the atherogenic plasma profile. AIP was recommended by the authors, based on analysis of results of 11 previous studies (1156 subjects) where FERHDL and plasma lipid parameters were investigated in different groups of people who differed as to the atherogenic risk. The AIP index was moreover used for evaluation of a clinical study comprising 609 patients with hyperlipidaemia, who were treated for three months with ciprofibrate (Lipanor). The mean AIP values of non-risk groups (plasma from umbilical blood, children, healthy women etc.) equalled zero or were lower, while with an increasing atherogenic risk (men, women after the menopause) AIP reached positive values, incl. high positive values in risk groups (plasma of diabetic subjects, patients with HLP, patients with positive angiography, myocardial infarction etc.). In all groups women had lower AIP values as compared with males. In patients after Lipanor therapy the AIP declined (from 0.58 +/- 0.17 to 0.33_0.18 in men, from 0.50 +/- 0.18 to 0.21 +/- 0.19 in women). If we consider AIP values from negative ones to 0.15 as "safe" from the aspect of atherogenicity, before Lipanor treatment these "safe" levels were recorded in 1.5% men and in 5.2% women and after treatment in 32% men and 48% women. The results indicate, that AIP which reflects the plasma lipoprotein profile quantifies the relations between TG and HDL-C and thus can be an objective indicator of the atherogenic risk and effectiveness of treatment and it is useful because it can be assessed in any surgery. 相似文献
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Stephen A. Brassell M.D. Albert Dobi Ph.D. Gyorgy Petrovics Ph.D. Shiv Srivastava Ph.D. David McLeod M.D. J.D. 《Urologic oncology》2009,27(5):562-569
This article describes the history, structure, and contributions of the Center for Prostate Disease Research. It divides the organization into the clinical program at Walter Reed Army Medical Center, the basic science program in Rockville, MD, and the multi-center national database. The emphasis of this article is not the achievements of the individual programs but their synergy, establishing a comprehensive multidisciplinary prostate center. 相似文献
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Furusato B Shaheduzzaman S Petrovics G Dobi A Seifert M Ravindranath L Nau ME Werner T Vahey M McLeod DG Srivastava S Sesterhenn IA 《Prostate cancer and prostatic diseases》2008,11(2):194-197
Formalin-fixed paraffin-embedded (FFPE) prostate specimens are rich sources of molecular pathological information. However, FFPE-based microarray analysis of tissue samples may be hampered by the degradation and chemical alteration of RNA molecules due to the preservation procedure. In this report, we employed a probe analyses of Affymetrix oligonucleotide arrays at individual probe level to compensate for the potential loss of gene identifications associated with compromised mRNA quality in FFPE preparations. Furthermore, to increase the sample quality, we utilized laser capture microdissection of prostate tumor and benign epithelial cells. Remarkably, combination of these approaches recapitulated the common prostate cancer-associated gene expression alteration. Identification of prostate cancer associated-gene expression alterations such as AMACR, Kallikrein gene family and genes associated with androgen signaling such as PDEF and STEAP were consistent with previous findings reported in prostate cancer. These data suggest that combination of laser capture dissection with computational enhancement of microarray data may be useful for the assessment of gene expression changes in FFPE prostate cancer specimens. 相似文献
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