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The influence of suppression of the expression of the Drosophila insulin-like receptor gene (InR) in corpus allatum (the gland-synthesizing juvenile hormone) on octopamine (OA) and juvenile hormone metabolism and on the development of the stress-reaction in Drosophila melanogaster females was studied. It was demonstrated that the suppression of InR gene(More)
dFOXO transcription factor is a component of the insulin/insulin-like growth factor signaling pathway in Drosophila. Juvenile hormone negatively regulates dFOXO gene expression. In the present work, the effect of hypomorphic dFOXO mutation on juvenile hormone metabolism under normal and stressing conditions and on D. melanogaster female resistance to(More)
263 It has long been established that the hormones that control insect development—juvenile hormone (JH) and 200hydroxyecdysone (20E)—play a gonadotropic role in the reproduction of adult insects (for review, see [1]). According to the model that is commonly accepted for Drosophila, JH synthesized de novo in a specialized endocrine gland, corpus allatum(More)
The effect of a decreased availability of the D1-like dopamine receptor (DopR) in Drosophila (caused by DopR antagonist added into food) on the juvenile hormone (JH) synthesis rate in young female D. melanogaster has been studied. The JH degradation rate and the alkaline phosphatase (ALP) and tyrosine decarboxylase (TDC) activities were used as indicators(More)
Desulfurispirillum indicum strain S5(T) is a strictly anaerobic bacterium isolated from river sediment in Chennai, India. D. indicum belongs to the deep branching phylum of Chrysiogenetes, which currently only includes three other cultured species. Strain S5(T) is the type strain of the species and it is capable of growth using selenate, selenite, arsenate,(More)
264 It has long been known that, in adult insects, including Drosophila, juvenile hormone (JH) performs the function of gonadotropic hormone: it induces the synthesis of ecdysteroids in the ovaries and controls their development, the process of vitellogenesis, and oviposition [1, 2]. It was also shown that JH is a comm ponent of the neuroendocrine stress(More)
The insulin/insulin-like growth factor signaling pathway is involved in the regulation of the synthesis of insect gonadotropic hormones, juvenile (JH) and 20-hydroxyecdysone (20E). We carried out the immunohistochemical analysis of the insulin receptor (InR) expression in the corpus allatum (the JH-producing gland) and in the ovarian follicular cells (a(More)
It is shown for the first time that the insulin receptor substrate gene chico controls the functioning of the systems of metabolism of dopamine and juvenile hormone in Drosophila melanogaster females under normal conditions and in thermal stress.
The effect of strong hypomorphic mutation of the insulin-like protein gene (dilp6) on metabolism of octopamine (one of the main biogenic amines in insects) was studied in Drosophila melanogaster males and females. The activity of tyrosine decarboxylase (the key enzyme of octopamine synthesis) and the activity of octopamine-dependent N-acetyltransferase (the(More)
Hemolymph filtration in insects is performed by nephrocytes, additional cells of the circulatory system that are not connected to Malpighian vessels. Drosophila has two types of nephrocytes: the ventral (“garland”), which are situated around the connection site of the esophagus and proventriculus, and the pericardial, which are localized around the heart.(More)