Starvation
Mostrando 1-12 de 2156 artigos, teses e dissertações.
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1. A VISITA DE FRITZ HABER AO BRASIL
Fritz Haber was awarded with the Nobel Prize in Chemistry in 1918 for the ammonia synthesis from its gaseous components. This work was fundamental to stop starvation around the world. On the opposite, his engagement to produce chemical weapons during the First World War is also an important fact in the life of this scientist. This polemic scientist visited B
Quím. Nova. Publicado em: 2021-04
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2. Compared activity of agonist molecules towards ecdysone receptor in insect cell-based screening system
RESUMO: O receptor de ecdisona, naturalmente ativado por hormônios esteroidais, é uma proteína-chave nos processos de muda e reprodução de insetos. A ativação artificial desse receptor por meio de pesticidas específicos induz um processo de ecdise anômala, levando o inseto à morte por dessecação e inanição. Neste trabalho, foi estabelecido um p
Arq. Inst. Biol.. Publicado em: 25/11/2019
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3. Do dietary stresses affect the immune system of Periplaneta americana (Blattaria: Blattidae)?
Resumo Os estresses podem ser causados por múltiplos fatores bióticos e abióticos e seus efeitos podem afetar tanto a biologia como o sistema imune dos insetos. A barata-americana – Periplaneta americana (Linnaeus, 1758) (Blattaria: Blattidae) – além de ser uma excelente espécie modelo, tem grande importância médica, pois pode atuar como vetor me
Braz. J. Biol.. Publicado em: 18/04/2019
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4. Stress conditions in the host induce persister cells and influence biofilm formation by Staphylococcus epidermidis RP62A
Abstract INTRODUCTION: Studies have demonstrated that pathogens react to the harsh conditions in human tissues by inducing mechanisms that promote survival. METHODS: Persistence and biofilm-forming ability were evaluated during stress conditions that mimic those in the host. RESULTS: Carbon-source availability had a positive effect on Staphylococcus epide
Rev. Soc. Bras. Med. Trop.. Publicado em: 14/02/2019
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5. Morphological changes of gonad and gene expression patterns during desexualization in Dugesia japonica (Platyhelminthes: Dugesiidae)
ABSTRACT Planarians, the representatives of an ancient bilaterian group with complex reproductive system and high regenerative capabilities, are model system suitable for studying the basic molecular requirements for the development of the reproductive system. To further explore the morphological changes of the gonads during desexualization and the molecular
Zoologia (Curitiba). Publicado em: 13/09/2018
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6. Evidence of the Presence of Thyroid Hormones in Achatina fulica Snails
ABSTRACT The objective of this study was to identify thyroid hormones and to examine their putative site of synthesis in Achatina fulica snails. For this purpose, radioimmunoassays were performed for T3 and T4 before and after long starvation with or without hemolymph deproteinization. Sodium/iodide symporter activity in vivo was analyzed through 125I admini
An. Acad. Bras. Ciênc.. Publicado em: 24/07/2017
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7. Practical Approaches of Inducing Controlled Simulated Resin Starvation Areas into Vacuum Infusion Processed Sandwich Composites Used for Characterisation of the Surface Defects and their Outcomes
Abstract Manufacturing defects in the sandwich structures have significant impact on their ultimate strength performance. It is essential to codify some criteria for the effects of such defects on the performance of the structure in order to investigate the quality of sandwich compo-sites and their load-bearing capabilities. By means of such criteria, one ca
Lat. Am. j. solids struct.. Publicado em: 2017-06
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8. Factors that alter the biochemical biomarkers of environmental contamination in Chironomus sancticaroli (Diptera, Chironomidae)
ABSTRACT Changes in physiology of the nervous system and metabolism can be detected through the activity of acetylcholinesterase (AChE), alpha esterase (EST-a) and beta esterase (EST-ß) in chironomids exposed to pollutants. However, to understand the real effect of xenobiotics on organisms, it is important to investigate how certain factors can interfere wi
Rev. Bras. entomol.. Publicado em: 2016-12
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9. Starvation and refeeding in rats: effect on some parameters of energy metabolism and electrolytes and changes of hepatic tissue
Abstract: Regarding the importance of starvation and refeeding and the occurrence of refeeding syndrome in various conditions, the present study was conducted to investigate the effects of refeeding on some parameters of energy metabolism and electrolytes and changes of hepatic tissue in male Wistar rats. Fifty-seven rats were divided into six groups, having
Pesq. Vet. Bras.. Publicado em: 2016-06
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10. Identification of genes expressed by Cryptococcus gattii during iron deprivation
Cryptococcus neoformans and C. gattii are pathogenic yeasts that cause life-threatening diseases in humans and animals. Iron is an essential nutrient for virtually every organism as it functions as a cofactor in numerous essential enzymatic reactions. In the literature, the competition for iron between microbes and mammalian hosts during infection is well do
Braz. J. Microbiol.. Publicado em: 2014-09
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11. Effect of feeding frequency on the reproductive efficiency of two species of Triatoma with different epidemiological importance
Introduction In Triatominae, reproductive efficiency is an important factor influencing population dynamics, and a useful parameter in measuring a species' epidemiological significance as a vector of Trypanosoma cruzi (Chagas, 1909). The reproductive efficiency of triatomines is affected by food availability; hence, we measured and compared the effects of f
Rev. Soc. Bras. Med. Trop.. Publicado em: 2014-08
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12. Hypokalemia during the early phase of refeeding in patients with cancer
OBJECTIVE: Refeeding syndrome occurs in patients with severe malnutrition when refeeding begins after a long period of starvation. This syndrome increases the risk of clinical complications and mortality. Hypophosphatemia is considered the primary characteristic of the syndrome. The aim of our study was to investigate the presence of other electrolyte alter
Clinics. Publicado em: 2013-11