Sarcocystis campestrisFrom Naturally Infected 13-Lined Ground Squirrels,Spermophilus tridecemlineatus tridecemlineatus, From Nebraska
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Sarcocystis campestris from naturally infected 13-lined ground squirrels, Spermophilus tridecemlineatus tridecemlineatus, from Nebraska.
Grossly visible sarcocysts were seen in the skeletal muscles of 1 of 12 13-lined ground squirrels, Spermophilus tridecemlineatus tridecemlineatus, collected in Nebraska. The tissue cyst wall was up to 5.0 microm thick and contained spikelike projections. Transmission electron microscopy of tissue cysts revealed they were similar to Sarcocystis campestris Cawthorn, Wobeser, and Gajadhar, 1983, p...
متن کاملTranscriptional Activation of p53 during Cold Induced Torpor in the 13-Lined Ground Squirrel Ictidomys tridecemlineatus
The transcription factor p53 is located at the centre of multiple pathways relating the cellular response to stress. Commonly known as a tumor suppressor, it is responsible for initiating diverse actions to protect the integrity of the genome, ranging from cell cycle arrest to apoptosis. This study investigated the regulation of p53 protein in hibernating 13-lined ground squirrel Ictidomys trid...
متن کاملA seasonal study of pinealocytes in the 13-lined ground squirrel, Spermophilus tridecemlineatus.
A quantitative histological study of pinealocytes in the 13-lined ground squirrel, Spermophilus tridecemlineatus, was conducted over a period of one year. Consistent and statistically significant seasonal differences were found in nuclear and nucleolar dimensions suggesting a circannual rhythm in the metabolism of these cells. Annual peaks occurred during hibernation, whereas the nadirs occurre...
متن کاملMetabolism of brain cortex and cardiac muscle mitochondria in hibernating 13-lined ground squirrels Ictidomys tridecemlineatus.
During bouts of torpor, mitochondrial metabolism is known to be suppressed in the liver and skeletal muscle of hibernating mammals. This suppression is rapidly reversed during interbout euthermic (IBE) phases, when whole-animal metabolic rate and body temperature (T(b)) return spontaneously to euthermic levels. Such mitochondrial suppression may contribute significantly to energy savings, but t...
متن کاملPotential of kidney cell cultures from nonhibernating thirteen-lined ground squirrels (Citellus tridecemlineatus) for virus propagation.
Kidney cells were cultured in vitro from nonhibernating thirteen-lined ground squirrels (Citellus tridecemlineatus). These primary ground squirrel kidney cultures were tested for the ability to support the replication of 13 viruses representing nine virus groups. The cultures were shown to be susceptible to every virus tested, either by an increase in infectious virus or by the cytopathic effec...
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ژورنال
عنوان ژورنال: Journal of Parasitology
سال: 2000
ISSN: 0022-3395,1937-2345
DOI: 10.1645/0022-3395(2000)086[1159:scfnil]2.0.co;2