Vitellogenin
Mostrando 1-12 de 174 artigos, teses e dissertações.
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1. Ploidy influences on metabolic substrate deposition of rainbow trout
ABSTRACT. Triploid fish are usually sterile. Thus, the energy and nutrients intended for sexual maturation may be available to enhance flesh quality and physical growth. The present study aimed to investigate differences in the metabolic substrates, lipids and proteins, between storage tissues from diploid and triploid female rainbow trout. Monthly, metaboli
Acta Sci., Anim. Sci.. Publicado em: 24/10/2019
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2. Características biológicas e moleculares na ovogênese de Anopheles darlingi Root, 1926 (Diptera, Culicidae)
The mosquito Anopheles darlingi is the main vector of human malaria in Brazil. Nevertheless, little information exists on the gonotrophic cycle of this important vector, whose knowledge is important for an effecient control strategy. Therefore, this work studied the oogenesis in this mosquito species. Molecular, biologic and morphological aspects of oogenesi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/04/2011
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3. Ovary Development and Maturation in Nezara viridula (L.) (Hemiptera: Pentatomidae)
Ovary development and maturation of Nezara viridula (L.) were evaluated by examining ovariole morphology and the alterations in the biochemical (protein synthesis related to reproduction) composition of the hemolymph. Quantitative and qualitative protein analyses were performed and ovary structural alterations for the pre-reproductive and reproductive stages
Neotropical Entomology. Publicado em: 2011-02
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4. Endocrinologia e controle da vitelogênese em carrapatos = Endocrinology and control of tick vitellogenesis / Endocrinology and control of tick vitellogenesis
Background: Ticks are distributed worldwide, with impacts on human and animal health. The cattle tick Rhipicephalus (Boophilus) microplus is the main parasite that affects livestock in tropical and subtropical regions of the world, causing large economical losses. Tick control methods are based on the application of chemical acaricides, which has resulted in
Publicado em: 2011
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5. Endocrinologia e controle de vitelogênese em carrapatos / Endocrinology and control of tick vitellogenesis
Background: Ticks are distributed worldwide, with impacts on human and animal health. The cattle tick Rhipicephalus (Boophilus) microplus is the main parasite that affects livestock in tropical and subtropical regions of the world, causing large economical losses. Tick control methods are based on the application of chemical acaricides, which has resulted in
Publicado em: 2011
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6. Culex quinquefasciatus vitellogenesis: morphological and biochemical aspects
The vitellogenic process in Culex quinquefasciatus, which is triggered by a blood meal, involves the synthesis, distribution and storage of the nutrients necessary for embryo development. The fat body of an adult female Cx. quinquefasciatus revealed two cell types: large trophocytes and small, eosinophilic, "oenocyte-like" cells, which show no morphological
Memórias do Instituto Oswaldo Cruz. Publicado em: 2010-05
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7. Culex quinquefasciatus vitellogenesis / Vitelogênese do mosquito Culex quinquefasciatus
Como em outros mosquitos, os trofócitos do corpo gorduroso de Cx. quinquefasciatus sintetizam vitelogenina (Vg), principal proteína armazenada pelo ovócito, formada por duas subunidades de 200 e 86 kDa. A ultraestrutura dos trofócitos revela o rápido desenvolvimento da maquinaria biossintética após a alimentação com sangue (aa) e a consecutiva degra
Publicado em: 2010
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8. Structural and functional analysis of VT1 and YP170B vitellins from the Rhabditid nematodes Oscheius tipulae and Caenorhabditis elegans. / Estudo das vitelinas VT1 e YP170B dos nematoides rabditídeos Oscheius tipulae e Caenorhabditis elegans: aspectos estruturais e funcionais.
The N-terminal region of OTI-VIT-1 was expressed and the recombinant polypeptides were purified. OTI-VIT-1 may be homologous to the vitellin YP170B from C. elegans. We identified an intron in the 5 region and two in 3region from Oti-vit-1. Monospecific antisera to PVIT1HisC confirmed that the gene Oti-vit-1 encodes VT1. The recombinant polypeptide P40-H, cor
Publicado em: 2009
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9. Functional redundancy in the post-translational processing of the vitellogenin VIT-6 precursor by Caenorhabditis elegans proprotein convertases. / Evidências de redundância funcional entre as pró-hormônio convertases no processamento pós-traducional do precursor da vitelogenina VIT-6 do nematóide Caenorhabditis elegans.
Caenorhabditis elegans possui quatro genes de kpcs (kex2/subtilisin-like proprotein convertases): kpc-1, kpc-2/egl-3, kpc-3/aex-5, kpc-4/bli-4. Em C. elegans, dois dos quatro polipeptídeos de vitelogenina encontrados dentro dos ovócitos, YP115 e YP88, se originam a partir de um precursor polipeptídico (VIT-6) clivado pós-traducionalmente após o motivo R
Publicado em: 2009
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10. Hormônios estrógenos no rio do Monjolinho, São Carlos - SP: uma avaliação da problemática dos desreguladores endócrinos ambientais / Estrogen hormones in Monjolinho river, São Carlos - SP: an assessment of environmental endocrine disruptors problems
A desregulação endócrina induzida por contaminação ambiental está entre os principais problemas criados pela sociedade moderna de consumo, responsável pela inserção no ambiente de uma série de substâncias interferentes nos sistemas hormonais dos mais diversos organismos, incluindo o próprio homem. A ação destes compostos acarreta, entre outros
Publicado em: 2008
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11. RNAs de fita dupla oferecidos na dieta de larvas causam alterações fisiológicas no desenvolvimento das castas de Apis mellifera / Double-stranded RNA ingested by Apis mellifera larvae promotes phisiological disturbs in caste development
Abelhas adultas produzem vitelogenina, a principal proteína da hemolinfa. Ela está envolvida na reprodução, comportamento, imunidade, longevidade e regulação da organização social. A interferência por RNA interference é a mais promissora ferramenta para estudos de função gênica, baseada na introdução de duplex de RNA (dsRNA) que induz a degrad
Publicado em: 2007
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12. Protein content and electrophoretic profile of fat body and ovary extracts from workers of Melipona quadrifasciata anthidioides (Hymenoptera, Meliponini)
Workers of Melipona quadrifasciata anthidioides (Lepeletier, 1836) develop their ovaries and lay eggs, therefore the production of vitellogenin is expected. In electrophoretic profiles only fat body extracts from nurse workers and ovary extracts from newly-emerged workers show protein with molecular mass similar to vitellogenin. However, an increase in the p
Iheringia. Série Zoologia. Publicado em: 30/12/2004