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1.
Rev. argent. endocrinol. metab ; Rev. argent. endocrinol. metab;51(4): 205-212, dic. 2014.
Artigo em Espanhol | LILACS | ID: lil-750592

RESUMO

El descubrimiento de los microRNAs (miRNAs) ha demostrado que estos se comportan como una poderosa clase de reguladores de la expresión génica. Al actuar a nivel postranscripcional, los miRNAs son capaces de modular la expresión de al menos un tercio de los RNA mensajeros codificados por el genoma. Aquí resumimos las principales alteraciones en la expresión de los genes para miRNAs identificados en el carcinoma papilar de tiroides. Se discuten también los mecanismos por los cuales la desregulación de estos miRNAs podrían estar involucrados en la transformación de las células foliculares tiroideas. Rev Argent Endocrinol Metab 51:205-212, 2014 Los autores declaran no poseer conflictos de interés.


MicroRNAs (miRNAs) small (~22 nt) single-stranded RNA molecules that are not further translated into proteins. They can act as negative regulators of the protein-coding gene expression and may impact cell differentiation, proliferation and survival. They have been implicated in carcinogenesis. The purpose of this review is to summarize the main alterations of miRNA expression identified in thyroid papillary carcinomas, and discuss the mechanisms by which miRNA deregulation might be involved in thyroid cell transformation. Rev Argent Endocrinol Metab 51:205-212, 2014 No financial conflicts of interest exist.

2.
J Parasitol ; 64(2): 239-44, 1978 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-641665

RESUMO

Spirocamallanus cricotus sp. n. (= S. pereirai, in part) and S. halitrophus sp. n. are described from marine fishes of the northern Gulf of Mexico. Spirocamallanus cricotus has a ledge anterior to the basal ring in the buccal capsule, similar spicules with a ratio of 1:1.4 to 2.1, 3 pre- and 5 postcloacal papillae, and 8 rectal glands in the female; S. halitrophus lacks the ledge and possesses dissimilar spicules with a ratio of 1:1.3 to 1.8, 3 pre- and 6 postcloacal papillae, and 4 rectal glands in the female.


Assuntos
Peixes/parasitologia , Nematoides/classificação , Animais , Feminino , Florida , Masculino , Mississippi , Nematoides/anatomia & histologia
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