Effects of hypocholesterolaemic agents on the expression and activity of 3-hydroxy-3-methylglutaryl-CoA reductase in the fat body of the German cockroach

2002 ◽  
Vol 49 (4) ◽  
pp. 177-186 ◽  
Author(s):  
Rafael Zapata ◽  
David Martín ◽  
Maria-Dolors Piulachs ◽  
Xavier Bellés
2008 ◽  
Vol 283 (22) ◽  
pp. 15479-15490 ◽  
Author(s):  
Dana Schiefelbein ◽  
Itamar Goren ◽  
Beate Fisslthaler ◽  
Helmut Schmidt ◽  
Gerd Geisslinger ◽  
...  

1997 ◽  
Vol 22 (1) ◽  
pp. 6-12 ◽  
Author(s):  
NURIA CASALS ◽  
DAVID MARTÍN ◽  
CARLOS BUESA ◽  
MARIA-DOLORS PIULACHS ◽  
FAUSTO G. HEGARDT ◽  
...  

Author(s):  
M. Locke ◽  
J. T. McMahon

The fat body of insects has always been compared functionally to the liver of vertebrates. Both synthesize and store glycogen and lipid and are concerned with the formation of blood proteins. The comparison becomes even more apt with the discovery of microbodies and the localization of urate oxidase and catalase in insect fat body.The microbodies are oval to spherical bodies about 1μ across with a depression and dense core on one side. The core is made of coiled tubules together with dense material close to the depressed membrane. The tubules may appear loose or densely packed but always intertwined like liquid crystals, never straight as in solid crystals (Fig. 1). When fat body is reacted with diaminobenzidine free base and H2O2 at pH 9.0 to determine the distribution of catalase, electron microscopy shows the enzyme in the matrix of the microbodies (Fig. 2). The reaction is abolished by 3-amino-1, 2, 4-triazole, a competitive inhibitor of catalase. The fat body is the only tissue which consistantly reacts positively for urate oxidase. The reaction product is sharply localized in granules of about the same size and distribution as the microbodies. The reaction is inhibited by 2, 6, 8-trichloropurine, a competitive inhibitor of urate oxidase.


2005 ◽  
Vol 173 (4S) ◽  
pp. 287-288
Author(s):  
Dolores Vemet ◽  
Thomas R. Magee ◽  
Ansha Qian ◽  
Gaby Nolazco ◽  
Jacob Rajfer ◽  
...  

2008 ◽  
Vol 7 ◽  
pp. 202-203
Author(s):  
A RIAD ◽  
S BIEN ◽  
F ESCHER ◽  
D WESTERMANN ◽  
U LANDMESSER ◽  
...  

2014 ◽  
Vol 84 (1-2) ◽  
pp. 5-11 ◽  
Author(s):  
Eun Y. Jung ◽  
Sung C. Jun ◽  
Un J. Chang ◽  
Hyung J. Suh

Previously, we have found that the addition of L-ascorbic acid to chitosan enhanced the reduction in body weight gain in guinea pigs fed a high-fat diet. We hypothesized that the addition of L-ascorbic acid to chitosan would accelerate the reduction of body weight in humans, similar to the animal model. Overweight subjects administered chitosan with or without L-ascorbic acid for 8 weeks, were assigned to three groups: Control group (N = 26, placebo, vehicle only), Chito group (N = 27, 3 g/day chitosan), and Chito-vita group (N = 27, 3 g/day chitosan plus 2 g/day L-ascorbic acid). The body weights and body mass index (BMI) of the Chito and Chito-vita groups decreased significantly (p < 0.05) compared to the Control group. The BMI of the Chito-vita group decreased significantly compared to the Chito group (Chito: -1.0 kg/m2 vs. Chito-vita: -1.6 kg/m2, p < 0.05). The results showed that the chitosan enhanced reduction of body weight and BMI was accentuated by the addition of L-ascorbic acid. The fat mass, percentage body fat, body circumference, and skinfold thickness in the Chito and Chito-vita groups decreased more than the Control group; however, these parameters were not significantly different between the three groups. Chitosan combined with L-ascorbic acid may be useful for controlling body weight.


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