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- BookSylvia L. Asa, Stefano La Rosa, Ozgur Mete, editors.Summary: Neuroendocrine neoplasms comprise a large family of proliferative lesions that involve almost every part of the body. Our understanding of their cells of origin as well as the pathology, pathophysiology and genetics of these neoplasms has made tremendous advances in the last few decades. While they are often discussed as separate entities in textbooks of gastroenteropancreatic pathology and pulmonary pathology, their scope is much broader. The book conveys the similarities and differences of these fascinating tumors that may be found from the hypothalamus and pituitary to the rectum, and in soft tissue as well as in many organs. Written by experts in the field, the authors emphasize their structural, functional, predictive and prognostic features and attempt to provide the clinical context that allows improved diagnosis and therapy while building on the genetics that clarifies patterns of inheritance and predisposition to tumor development through precursor lesions. The Spectrum of Neuroendocrine Neoplasia provides a broad overview of neuroendocrine neoplasms using a practical approach to diagnosis, histological classification and therapy, and presents the most important and significant developments of the technologies used to diagnose, classify and treat them.
- ArticleLivshits VA, Shakulov RS, Zaigraeva GG, Gusiatiner MM, Zhdanova NI.Genetika. 1978 Jun;14(6):947-56.The substitution of the relA gene mutant allele with wild type allele of this gene in strictly auxotrophic strain of Escherichia coli K-12 GT25, carrying thr B1007 mitation, results in the appearance of the partial dependence of the bacterial growth upon threonine. On the other hand, the introduction of relA mutation into genome of incomplete threonine auxotroph, which was isolated as pseudorevertant from the strict threonine auxotroph CP78, recovered the strict dependency of the growth on the presence of threonine in the medium. The introduction of relA mutation into genome of partial isoleucine auxotroph, carrying a mutation in ilvA gene, reduces the residual activity of threonine deaminase under the conditions of derepression and results in the appearance of strict dependency of bacterial growth on the presence of isoleucine. These data indicate that operons, which control the biosynthesis of threonine and isoleucine, are positively regulated by the product of relA gene. The possibility of using leaky mutations, which lead to incomplete block of these amino acids synthesis, for testing allelic state of relA gene is discussed.
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