scholarly journals Vitellogenin synthesis in the fat body of the marine crustacean Isopoda, Idotea balthica basteri, during vitellogenesis

1981 ◽  
Vol 21 (1) ◽  
pp. 95-101 ◽  
Author(s):  
Catherine SOUTY ◽  
J. L. PICAUD
Keyword(s):  
Fat Body ◽  
Marine Crustacean ◽  
Vitellogenin Synthesis ◽  
Idotea Balthica

Hymenolepis diminuta: metacestode-induced reduction in the synthesis of the yolk protein, vitellogenin, in the fat body of Tenebrio molitor

Parasitology ◽  
1996 ◽  
Vol 112 (4) ◽  
pp. 429-436 ◽  
Author(s):  
T. J. Webb ◽  
H. Hurd
Keyword(s):  
Post Infection ◽  
Fat Body ◽  
Potent Inhibitor ◽  
Tenebrio Molitor ◽  
Hymenolepis Diminuta ◽  
Vitellogenin Synthesis ◽  
Specific Stage ◽  
Fat Bodies ◽  
Do So

SUMMARYVitellogenin synthesis by the fat body has been monitored using in vitro culture and immunoprecipitation. This system was found to be efficient for measuring vitellogenin production in both non-infected Tenebrio molitor and those infected with Hymenolepis diminuta. In fat bodies from infected beetles, vitellogenin production was decreased by up to 75% (day 24 post-infection) and, at all times investigated, vitellogenin synthesis was significantly below control levels (days 3–30 post-infection). Incubating fat bodies from control insects with isolated metacestodes indicated that this may be a direct effect by the parasite which is developmental stage-specific. Stage II, but not stage III–IV, nor heat-killed parasites could bring about this decrease in vitellogenin. In addition, these effects may be density dependent within the range of 2–20 parasites per fat body; only 2 metacestodes were necessary to cause a significant decrease. Since metacestodes do not take up vitellogenin, nor limit the amount of [14C] leucine available to the fat body for vitellogenin production, it is conceivable that the parasite produces a potent inhibitor of vitellogenin synthesis, or a molecule which induces cells within the fat body to do so.

Vitellogenin synthesis by the fat body of the mosquito Aedes aegypti

1973 ◽  
Vol 31 (2) ◽  
pp. 285-294 ◽  
Author(s):  
H.H. Hagedorn ◽  
Ann Marie Fallon ◽  
Hans Laufer
Keyword(s):  
Aedes Aegypti ◽  
Fat Body ◽  
Vitellogenin Synthesis

Juvenile hormone-controlled vitellogenin synthesis in Locusta migratoria fat body

1979 ◽  
Vol 69 (1) ◽  
pp. 59-72 ◽  
Author(s):  
Thomas T. Chen ◽  
Pierre Couble ◽  
Randa Abu-Hakima ◽  
Gerard R. Wyatt
Keyword(s):  
Juvenile Hormone ◽  
Fat Body ◽  
Locusta Migratoria ◽  
Vitellogenin Synthesis
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