Key words: g-radiation, hesperidin, paraquat, lung, dorsal aorta, blood cells.
Lung and dorsal aorta were rapidly excised and a 10% weight/volume (w/v) tissue homogenates were prepared in 0.1 M phosphate buffer (pH 7.4) using Teflon homogenizer Glas-Col, Terre Haute, Ind., USA.
A 50 cm long PE 50 tubing (Clay Adams PE 50 tubing, Parsippany, NJ, USA) with a bubble of about 5 to 6 cm on one end was used for the dorsal aorta cannula after it was flushed with the heparinized Cortland saline solution (Houston, 1990).
Thirty five dorsal aorta cannulated rainbow trout were randomly distributed into seven groups including five fish per group and intubated with one of the seven experimental diets per group.
Ltd., Daejon, Korea) for 72 h until the fish recovered from the operation of dorsal aorta cannulation.
Dorsal aorta cannulation and intubation (force-feeding)
(2004), who investigated the nature of the mechanisms of vasodilatation of the dorsal aorta
artery of Rhinobatus typus, found neural synthesis of nitric oxide in fibers of the perivascular nerves in the aorta and in other arteries and veins.
The initial capillary plexus that supplies the upper limb from the dorsal aorta
undergoes an enlargement and differentiation of selected parts in a proximal to distal sequence.
Between the 6th and the 9th week, the kidney ascends to the lumbar region, along the dorsal aorta
. The exact mechanism is unknown.
Then, a plexiform venous collar develops, encircling the dorsal aorta
and drains the permanent kidney.
In an 18 mm fetus, the developing mesonephros, metanephros, suprarenal glands and gonads are supplied by nine pairs of lateral mesonephric arteries arising from the dorsal aorta
. Felix divided these pairs of arteries into three groups as follows: the 1st and 2nd arteries as the cranial group, the 3rd to 5th arteries as the middle group and 6th to 9th arteries as the caudal group.
Congenital coarctation has been thought to be due to incomplete fusion or overfusion of embryonic dorsal aortas
during 4th week of gestation.6-8 Another hypothesis implicates intra-uterine injury or infection, particularly rubella as the risk factor that precipitates aortic hypoplasia.2 Acquired MAS is associated with neurofibromatosis, William's syndrome, Alagille syndrome, fibromuscular dysplasia, retroperitoneal fibrosis (Ormond disease), mucopolysaccharidosis, foetal alcohol syndrome and giant cell arteritides including temporal (cranial) and Takayasu arteritis.1,9