Abstract：
:Juvenile hormone (JH) titers must be modulated to permit the normal progress of development and reproduction in mosquitoes. In adult female Aedes aegypti, JH levels are low at adult eclosion, elevated in sugar-fed females and low again after a blood meal. Although degradation plays a role, JH titer is fundamentally determined by the rate of biosynthesis in the corpora allata gland (CA). CA from newly eclosed females (0-1 h after emergence) exhibit a very low basal JH biosynthetic activity, Aedes-allatotropin stimulates the CA in newly emerged females to produce JH. There is a correlation between nutritional reserves at adult emergence (teneral reserves) and CA activity. JH synthesis is significantly reduced in teneral females that emerge with low nutritional reserves. Taking a blood meal results in a reduction of CA activity. The biosynthetic activity of Ae. aegypti CA is significantly inhibited by factors present in the head, as well as by Anopheles gambiae PISCF-allatostatin. Nutritional signals affect the release of allatotropin and allatostatins by the brain resulting in the activation or inhibition of JH synthesis. JH is therefore an important part of a transduction mechanism that connects changes in the nutritional status with activation of specific physiological events during reproduction.
journal_name
Insect Biochem Mol Bioljournal_title
Insect biochemistry and molecular biologyauthors
Noriega FGdoi
10.1016/j.ibmb.2004.03.021subject
Has Abstractpub_date
2004-07-01 00:00:00pages
687-93issue
7eissn
0965-1748issn
1879-0240pii
S0965174804000724journal_volume
34pub_type
杂志文章,评审abstract：:A defense mechanism in the hemocytes and cuticle of developing Ceratitis capitata has been demonstrated (Marmaras and Charalambidis, 1992; Marmaras et al., 1993a; Marmaras et al., 1993b). To elucidate further the mechanism and the regulation of defense reactions, we studied this process in relation to melanization in ...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/0965-1748(94)90052-3
更新日期：1994-07-01 00:00:00
abstract：:Glutamine synthetase (GS) in the mosquito, Aedes aegypti, is induced in the midgut following a blood meal. Mosquito GS message is detected as soon as 1 h post-blood feeding and remains stable for 18 h. Using a PCR product encoding mosquito GS, a lambda gt10 adult female mosquito cDNA library was screened. A cDNA clone...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/s0965-1748(98)00073-3
更新日期：1998-12-01 00:00:00
abstract：:The present paper describes the effect of juvenile hormone III (JH III) upon vitellogenin (Vg) gene expression in cardioallatectomized females of Blattella germanica. Northern blot analyses of time course studies showed that Vg mRNA can be detected 2 h after the treatment with 1 microgram of JH III. Western blot analy...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/s0965-1748(99)00058-2
更新日期：1999-09-01 00:00:00
abstract：:Protein digestion in the lesser grain borer, Rhyzopertha dominica (F.) (Coleoptera: Bostrichidae), results from the action of a complex of serine proteinases present in the midgut. In this study we partially characterized trypsin-like enzyme activity against N-alpha-benzoyl-L-arginine p-nitroanilide (BApNA) in midgut ...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/s0965-1748(99)00081-8
更新日期：1999-12-01 00:00:00
abstract：:Olfaction is one of the main sensory modalities that allow insects to interpret their environment. Several proteins, including odorant-binding proteins (OBPs) and odorant receptors (ORs), are involved in this process. Odorant receptors are ion channels formed by a binding unit OR and an odorant receptor co-receptor (O...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2015.02.012
更新日期：2016-02-01 00:00:00
abstract：:A cDNA clone containing a 921 bp open-reading frame (307 amino acids; 34 kDa) homologous to the TATA-binding protein (TBP) was isolated and sequenced from a Spodoptera frugiperda cell line that is commonly used in the baculovirus expression system. Analysis of the S. frugiperda TBP (SfTBP) sequence showed that the ami...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/0965-1748(94)90057-4
更新日期：1994-07-01 00:00:00
abstract：:The chorion of Aedes aegypti eggs undergoes a hardening process following oviposition and individual chorion proteins become insoluble thereafter. Our previous studies determined that peroxidase-catalyzed chorion protein crosslinking and phenoloxidase-mediated chorion melanization are primarily responsible for the for...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2006.09.006
更新日期：2006-12-01 00:00:00
abstract：:FGLamide-related ASTs (FGLa/ASTs) are a family of brain/gut peptides with numerous physiological roles, including inhibition of juvenile hormone (JH) biosynthesis by the corpora allata and inhibition of visceral muscle contraction. FGLa/ASTs mediate their effects by binding to a rhodopsin-like G-protein coupled recept...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2014.12.001
更新日期：2015-02-01 00:00:00
abstract：:cAMP-dependent-protein kinase (PKA) is a central player of the adipokinetic signal that controls the mobilization of stored lipids in the fat body. Previous studies showed that adipokinetic hormone (AKH) rapidly activates PKA from the fat body of Manduca sexta (Arrese et al. (J. Lipid. Res. 40(3): 556)). As a part of ...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2004.08.008
更新日期：2004-12-01 00:00:00
abstract：:Juvenile hormone (JH) regulates reproductive maturation in insects; therefore interruption of JH biosynthesis has been considered as a strategy for the development of target-specific insecticides. The corpora allata (CA) from mosquitoes is highly specialized to supply variable levels of JH, which are linked to ovarian...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2014.05.001
更新日期：2014-08-01 00:00:00
abstract：:Insects taste nonvolatile chemicals through gustatory receptors (Grs) and make choices for feeding, mating, and oviposition. To date, genome projects have identified 69 Gr genes in the silkworm, Bombyx mori; however, the expression sites of these Grs remain to be explored. In this study, we used reverse transcription ...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2015.12.008
更新日期：2016-03-01 00:00:00
abstract：:The study of hemolymph melanization in Lepidoptera has contributed greatly to our understanding of its role in insect immunity. Manduca sexta in particular has been an excellent model for identifying the myriad components of the phenoloxidase (PO) cascade and their activation through exposure to pathogen-associated mo...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2015.01.002
更新日期：2015-03-01 00:00:00
abstract：:Uridine diphosphate (UDP)-glycosyltransferases (UGTs) catalyze the addition of UDP-sugars to small hydrophobic molecules, turning them into more water-soluble metabolites. While their role in detoxification is well documented for vertebrates, arthropod UGTs have only recently been linked to the detoxification and sequ...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2019.04.010
更新日期：2019-06-01 00:00:00
abstract：:Juvenile hormone (JH) induces termination of diapause and initiation of reproductive maturation in the adult female bean bug, Riportus clavatus. Applying PCR-based differential display, we have identified four novel JH-responsive cDNAS, that is, three repressible (JR-1, 2 and 3) and one inducible (JI-1). These DNA fra...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/s0965-1748(97)00116-1
更新日期：1998-03-01 00:00:00
abstract：:Nicotinic acetylcholine receptors (nAChRs) are targets for insect-selective neonicotinoid insecticides exemplified by imidacloprid (IMI) and mammalian-selective nicotinoids including nicotine and epibatidine (EPI). Despite their importance, insect nAChRs are poorly understood compared with their vertebrate counterpart...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2005.08.006
更新日期：2005-12-01 00:00:00
abstract：:This study was designed to identify one of the main components of venomous secretions of the endoparasitic wasp Asobara tabida. By using electrophoretic methods, partial amino acid sequencing and immunostaining, we demonstrated the presence of an aspartylglucosaminidase (AGA)-like protein in the venom of this insect. ...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2004.03.001
更新日期：2004-05-01 00:00:00
abstract：:Voltage-gated sodium channels are essential for the generation and propagation of action potentials in most excitable cells. They are the target sites of several classes of insecticides and acaricides. Isolation of full-length sodium channel cDNA is a critical and often difficult step toward an understanding of insect...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/s0965-1748(03)00068-7
更新日期：2003-07-01 00:00:00
abstract：:Methylfarnesoate (MF), an analogue of the insect juvenile hormone III, has been implicated to play a vital role in the regulation of the growth and reproductive development in crustaceans. Farnesoic acid O-methyltransferase (FAMeT) is the key enzyme involved in catalyzing the final step in the MF biosynthetic pathway....
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/s0965-1748(01)00060-1
更新日期：2001-10-01 00:00:00
abstract：:G protein-coupled receptors (GPCRs) are membrane-bound receptors that are considered prime candidates for the development of novel insect pest management strategies. However, the molecular signaling properties of insect GPCRs remain poorly understood. In fact, most studies on insect GPCR signaling are limited to analy...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2020.103392
更新日期：2020-07-01 00:00:00
abstract：:This analysis considers the structural evidence of a ligand-binding function of the nuclear receptor ultraspiracle (USP). The positions and nature of residues in the ligand-binding domain of USP from six higher insects is evaluated in comparison to the function of conserved residues vertebrate receptors that have been...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章,评审
doi：10.1016/s0965-1748(00)00038-2
更新日期：2000-08-01 00:00:00
abstract：:After female mosquitoes ingest blood from vertebrate hosts, exopeptidases and endopeptidases are required for digesting blood proteins in the midgut into amino acids, which female mosquitoes use to build yolk proteins. These proteases are not always present in the midgut, and their diverse expression patterns suggest ...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2007.10.008
更新日期：2008-02-01 00:00:00
abstract：:The majority of proteins is modified with carbohydrate structures. This modification, called glycosylation, was shown to be crucial for protein folding, stability and subcellular location, as well as protein-protein interactions, recognition and signaling. Protein glycosylation is involved in multiple physiological pr...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章,评审
doi：10.1016/j.ibmb.2017.02.005
更新日期：2017-04-01 00:00:00
abstract：:Using in vitro methods, we investigated the transfer of cholesterol from larval Manduca sexta midgut to the hemolymph lipoprotein, lipophorin, and the transfer of cholesterol from lipophorin to larval fat body. In the midgut, transfer of free cholesterol shows saturation kinetics, but the apparent Km is higher than th...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/s0965-1748(02)00051-6
更新日期：2002-09-01 00:00:00
abstract：:The swallowtail butterfly, Papilio xuthus L., feeds exclusively on members of the plant family, Rutaceae. Female butterflies lay eggs in response to specific chemicals contained in their host plants. They perceive a variety of polar compounds as oviposition stimulants through the tarsal chemosensilla of the foreleg by...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2005.03.013
更新日期：2005-08-01 00:00:00
abstract：:Normal silkworms (Bombyx mori) have opaque larval skin due to uric acid accumulation in the epidermis while a mutant, og, is translucent owing to a deficiency in xanthine dehydrogenase (XDH), which synthesizes uric acid. Molybdenum cofactor (MoCo) sulfurase is responsible for XDH activation in various organisms. A sil...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/s0965-1748(03)00006-7
更新日期：2003-04-01 00:00:00
abstract：:Sex-pheromone production in the night flying female moth, Helicoverpa armigera is under neuroendocrine control due to the timely release of Pheromone Biosynthesis-Activating Neuropeptide (PBAN). Males orient to the females by upwind anemotaxis which usually leads to a successful mating. During copulation insect males ...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/j.ibmb.2011.03.004
更新日期：2011-08-01 00:00:00
abstract：:Specific binding to midgut membrane proteins is required for the toxicity of insecticidal crystal proteins (ICP) from Bacillus thuringiensis. A direct relationship between toxicity and binding has been proposed. It has been hypothesized that sharing of a single receptor by more than one ICP could lead to the occurrenc...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/s0965-1748(97)00039-8
更新日期：1997-07-01 00:00:00
abstract：:The juvenile hormone analog (JHA) methoprene was used to induce the synthesis of the yolk protein precursor vitellogenin (Vg) in adult females and males of the cockroach Leucophaea maderae. The female- and male-produced vitellogenin (VgF and VgM, respectively) contained polypeptides of 112, 95, 92, and 54 kDa. Also pr...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/s0965-1748(97)00071-4
更新日期：1997-11-01 00:00:00
abstract：:Activation with 2-propanol and other organic compounds of prophenoloxidase purified from pupae of Drosophila melanogaster was analyzed. A1, one of the two isozymes of the prophenoloxidase, could be activated with both an endogenous activating system and artificial organic compounds including alcohols. A1 was activated...
journal_title：Insect biochemistry and molecular biology
pub_type： 杂志文章
doi：10.1016/0965-1748(93)90060-6
更新日期：1993-06-01 00:00:00
abstract：:The first aggregation pheromone components from bark beetles were identified in 1966 as a mixture of ipsdienol, ipsenol and verbenol. Since then, a number of additional components have been identified as both aggregation and anti-aggregation pheromones, with many of them being monoterpenoids or derived from monoterpen...
journal_title：Insect biochemistry and molecular biology
pub_type： 历史文章,杂志文章,评审
doi：10.1016/j.ibmb.2010.07.013
更新日期：2010-10-01 00:00:00
