共查询到20条相似文献,搜索用时 31 毫秒
1.
Graciela Cárdenas Roger Carrillo-Mezo Helgi Jung Edda Sciutto Jose Luis Soto Hernandez Agnès Fleury 《BMC neurology》2010,10(1):16
Background
Neurocysticercosis (NC) is one of the most frequent parasitic diseases of the central nervous system. Cysticidal drugs, albendazole and praziquantel, are generally effective when parasites localize in the parenchyma. In contrast, parasites lodged in the subarachnoid basal cisterns are less responsive to treatment. 相似文献2.
Robert C Edgar 《BMC bioinformatics》2009,10(1):396
Background
While substitution matrices can readily be computed from reference alignments, it is challenging to compute optimal or approximately optimal gap penalties. It is also not well understood which substitution matrices are the most effective when alignment accuracy is the goal rather than homolog recognition. Here a new parameter optimization procedure, POP, is described and applied to the problems of optimizing gap penalties and selecting substitution matrices for pair-wise global protein alignments. 相似文献3.
Feng Mu Dongsheng Niu Jingsong Mu Bo He Weiguo Han Baoxing Fan Shengyong Huang Yan Qiu Bo You Weijun Chen 《BMC microbiology》2008,8(1):207
Background
In the absence of effective drugs, controlling SARS relies on the rapid identification of cases and appropriate management of the close contacts, or effective vaccines for SARS. Therefore, developing specific and sensitive laboratory tests for SARS as well as effective vaccines are necessary for national authorities. 相似文献4.
Wuming Gong Yongliang Ren Qiqi Xu Yejun Wang Dong Lin Haiyan Zhou Tongbin Li 《BMC bioinformatics》2006,7(1):516-21
Background
Short interfering RNAs have allowed the development of clean and easily regulated methods for disruption of gene expression. However, while these methods continue to grow in popularity, designing effective siRNA experiments can be challenging. The various existing siRNA design guidelines suffer from two problems: they differ considerably from each other, and they produce high levels of false-positive predictions when tested on data of independent origins. 相似文献5.
Background
The estimation of parameter values continues to be the bottleneck of the computational analysis of biological systems. It is therefore necessary to develop improved methods that are effective, fast, and scalable. 相似文献6.
David Honys Sung-Aeong Oh David Reňák Maarten Donders Blanka Šolcová James Andrew Johnson Rita Boudová David Twell 《BMC plant biology》2006,6(1):31-9
Background
The effective functional analysis of male gametophyte development requires new tools enabling the spatially and temporally controlled expression of both marker genes and modified genes of interest. In particular, promoters driving expression at earlier developmental stages including microspores are required. 相似文献7.
Background
Riboswitches are mRNA elements that change conformation when bound to small molecules. They are known to be key regulators of biosynthetic pathways in both prokaryotes and eukaryotes. 相似文献8.
Ivar Aursnes Jan-Bjørn Osnes Ingunn Fride Tvete Jørund Gåsemyr Bent Natvig 《BMC clinical pharmacology》2007,7(1):4
Background
A recent meta-analysis of drug effects in patients with hypertension claims that all β-adrenergic blockers are equally effective but less so than other antihypertensive drugs. Published comparisons of the β-adrenergic blocker atenolol and non-atenolol β-adrenergic blockers indicate different effects on death rates, arrhythmias, peripheral vascular resistance and prognosis post myocardial infarction, all in disfavour of atenolol. In keeping with these findings, the data presented in the meta-analysis indicate that atenolol is less effective than the non-atenolol β-adrenergic blockers both when compared with placebo and with other antihypertensive drugs. These findings were not, however, statistically significant. 相似文献9.
Background
Microarray-based comparative genome hybridization experiments generate data that can be mapped onto the genome. These data are interpreted more easily when represented graphically in a genomic context. 相似文献10.
Background
Intravesical BCG immunotherapy is effective for preventing recurrence and progression in none muscle-invasive bladder cancer but the dosing schedule and duration of treatment remain empirical. The mechanisms by which intravesical BCG treatment mediates antitumor activity are currently poorly understood. 相似文献11.
Vance L Trudeau Gustavo M Somoza Guillermo S Natale Bruce Pauli Jacqui Wignall Paula Jackman Ken Doe Fredrick W Schueler 《Reproductive biology and endocrinology : RB&E》2010,8(1):36
Background
It is well known that many anurans do not reproduce easily in captivity. Some methods are based on administration of mammalian hormones such as human chorionic gonadotropin, which are not effective in many frogs. There is a need for simple, cost-effective alternative techniques to induce spawning. 相似文献12.
Brittany E. Harlow Michael D. Flythe Glen E. Aiken 《Journal of applied microbiology》2018,124(1):58-66
Aims
The objective was to determine the effect of the isoflavone biochanin A (BCA) on rumen cellulolytic bacteria and consequent fermentative activity.Methods and Results
When bovine microbial rumen cell suspensions (n = 3) were incubated (24 h, 39°C) with ground hay, cellulolytic bacteria proliferated, short‐chain fatty acids were produced and pH declined. BCA (30 μg ml?1) had no effect on the number of cellulolytic bacteria or pH, but increased acetate, propionate and total SCFA production. Addition of BCA improved total digestibility when cell suspensions (n = 3) were incubated (48 h, 39°C) with ground hay, Avicel, or filter paper. Fibrobacter succinogenes S85, Ruminococcus flavefaciens 8 and Ruminococcus albus 8 were directly inhibited by BCA. Synergistic antimicrobial activity was observed with BCA and heat killed cultures of cellulolytic bacteria, but the effects were species dependent.Conclusions
These results indicate that BCA improves fibre degradation by influencing cellulolytic bacteria competition and guild composition.Significance and Impact of the Study
BCA could serve as a feed additive to improve cellulosis when cattle are consuming high‐fibre diets. Future research is needed to evaluate the effect of BCA on fibre degradation and utilization in vivo. 相似文献13.
Background
Rice fields are efficient breeding places for malaria vectors in Madagascar. In order to establish as easily as possible if a rice field is an effective larval site for anophelines, we compared classical dipping versus a net as methods of collecting larvae. 相似文献14.
Background
Serine proteases secreted by nematode and insect pathogenic fungi are bio-control agents which have commercial potential for developing into effective bio-pesticides. A thorough understanding of the structural and functional features of these proteases would significantly assist with targeting the design of efficient bio-control agents. 相似文献15.
Rita Gupta Anna Stincone Philipp Antczak Sarah Durant Roy Bicknell Andreas Bikfalvi Francesco Falciani 《BMC systems biology》2011,5(1):52
Background
Reverse engineering in systems biology entails inference of gene regulatory networks from observational data. This data typically include gene expression measurements of wild type and mutant cells in response to a given stimulus. It has been shown that when more than one type of experiment is used in the network inference process the accuracy is higher. Therefore the development of generally applicable and effective methodologies that embed multiple sources of information in a single computational framework is a worthwhile objective. 相似文献16.
Background
Gene/protein recognition and normalization are important preliminary steps for many biological text mining tasks, such as information retrieval, protein-protein interactions, and extraction of semantic information, among others. Despite dedication to these problems and effective solutions being reported, easily integrated tools to perform these tasks are not readily available. 相似文献17.
Background
Comparative sequence analysis is an effective and increasingly common way to identifycis-regulatory regions in animal genomes. 相似文献18.
Background
Porcine rotavirus infection is a significant cause of morbidity and mortality in the swine industry necessitating the development of effective vaccines for the prevention of infection. Immune responses associated with protection are primarily mucosal in nature and induction of mucosal immunity is important for preventing porcine rotavirus infection. 相似文献19.