Transgenic Detection
Mostrando 25-36 de 82 artigos, teses e dissertações.
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25. Three cadherin alleles associated with resistance to Bacillus thuringiensis in pink bollworm
Evolution of resistance by pests is the main threat to long-term insect control by transgenic crops that produce Bacillus thuringiensis (Bt) toxins. Because inheritance of resistance to the Bt toxins in transgenic crops is typically recessive, DNA-based screening for resistance alleles in heterozygotes is potentially much more efficient than detection of res
The National Academy of Sciences.
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26. Autoantibody production in hepatitis B e antigen transgenic mice elicited with a self T-cell peptide and inhibited with nonself peptides.
Studies in hepatitis B e antigen (HBeAg)-expressing transgenic mice indicate that self tolerance to two T-cell determinants on the same transgenic self molecule can differ markedly. The dominant T-cell site on HBeAg is tolerogenic, whereas a proportion of T cells recognizing a second T-cell site evade tolerance induction, persist in the periphery, and can be
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27. The tsA58 simian virus 40 large tumor antigen disrupts megakaryocyte differentiation in transgenic mice.
Thrombocytopenia is a condition of multiple etiologies affecting the megakaryocyte lineage. To perturb this lineage in transgenic mice, the tsA58 mutation of the simian virus 40 large tumor antigen was targeted to megakaryocytes using the platelet factor 4 promoter. Ten of 17 transgenic lines generated exhibited low platelet levels, each line displaying a di
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28. Two amyloid precursor protein transgenic mouse models with Alzheimer disease-like pathology
Mutations in the amyloid precursor protein (APP) gene cause early-onset familial Alzheimer disease (AD) by affecting the formation of the amyloid β (Aβ) peptide, the major constituent of AD plaques. We expressed human APP751 containing these mutations in the brains of transgenic mice. Two transgenic mouse lines develop pathological features reminiscent of
The National Academy of Sciences of the USA.
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29. Simple and Efficient Method for Measuring Anti-Toxoplasma Immunoglobulin Antibodies in Human Sera Using Complement-Mediated Lysis of Transgenic Tachyzoites Expressing β-Galactosidase
A simple and efficient method using transgenic Toxoplasma gondii tachyzoites expressing β-galactosidase was developed for detection of specific antibodies against the parasite in sera of patients. The titers obtained with the new test were similar to those obtained with the Sabin-Feldman dye test run in parallel. Although significant changes in endpoint tit
American Society for Microbiology.
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30. Fecal PCR assay for diagnosis of Helicobacter infection in laboratory rodents.
A fecal PCR assay for detection of Helicobacter infections in laboratory rodents was developed. DNA was isolated from murine fecal pellets, and a region of the 16S rRNA gene conserved among murine Helicobacter species was amplified. The fecal PCR was sensitive and specific. This assay does not require euthanasia of rodents, which is especially important for
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31. A novel multiplex quantitative DNA array based PCR (MQDA-PCR) for quantification of transgenic maize in food and feed
We have developed a novel multiplex quantitative DNA array based PCR method (MQDA-PCR). The MQDA-PCR is general and may be used in all areas of biological science where simultaneous quantification of multiple gene targets is desired. We used quantification of transgenic maize in food and feed as a model system to show the applicability of the method. The met
Oxford University Press.
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32. Germ line-specific expression of intracisternal A-particle retrotransposons in transgenic mice.
Intracisternal A-particle (IAP) sequences are endogenous retrovirus-like mobile elements, or retrotransposons, present at 1,000 copies in the mouse genome. These elements transpose in a replicative manner via an RNA intermediate and its reverse transcription, and their transposition should therefore be tightly controlled by their transcription level. To anal
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33. Retrograde trans-synaptic transfer of green fluorescent protein allows the genetic mapping of neuronal circuits in transgenic mice
The function of the nervous system is a consequence of the intricate synaptic connectivity of its neurons. Our understanding of these highly complex networks has profited enormously from methods used over the past two decades that are based on the mechanical injection of tracer molecules into brain regions. We have developed a genetic system for the mapping
The National Academy of Sciences.
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34. Activity of an S Locus Gene Promoter in Pistils and Anthers of Transgenic Brassica.
The pollen-stigma interaction of self-incompatibility in crucifers is correlated with glycoproteins localized in the cell wall of the stigmatic papillae that are encoded by the S locus glycoprotein (SLG) gene. When fused to the [beta]-glucuronidase (GUS) reporter gene, the 5[prime] upstream regulatory region of SLG directed high level expression in the papil
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35. Analysis of Escherichia coli beta-galactosidase expression in transgenic mice by flow cytometry of sperm.
Alterations to the mammalian genome that occur during the development of germ cells, in particular during meiosis, can be introduced into the population upon fertilization. These alterations can occur through homologous recombination, genome rearrangement, or mutagenesis. Such events usually occur infrequently for any particular sequence. Because of the diff
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36. Effects of Feeding a Probiotic Preparation (SIM) Containing Inulin on the Severity of Colitis and on the Composition of the Intestinal Microflora in HLA-B27 Transgenic Rats
An overly aggressive immune response to the intestinal microflora in a genetically susceptible host background has been implicated in the pathogenesis of inflammatory bowel diseases. We measured the impact of a probiotic preparation (SIM) containing inulin on the severity of colitis and on intestinal microflora profiles of HLA-B27-β2-microglobulin transgeni
American Society for Microbiology.