Kisucka A.,Slovak Academy of Sciences |
Hricova .,Slovak Academy of Sciences |
Pavel J.,Slovak Academy of Sciences |
Strosznajder J.B.,Polish Academy of Sciences |
And 7 more authors.
Spine Journal | Year: 2015
Background context The loss of descending control after spinal cord injury (SCI) and incessant stimulation of Ia monosynaptic pathway, carrying proprioceptive impulses from the muscles and tendons into the spinal cord, evoke exaggerated α-motoneuron activity leading to increased reflex response. Previous results from our laboratory have shown that Ia monosynaptic pathway is nitrergic. Purpose The aim of this study was to find out whether nitric oxide produced by neuronal nitric oxide synthase (nNOS) plays a role in setting the excitability of α-motoneurons after thoracic spinal cord transection. Study design We tested the hypothesis that the inhibition of nNOS in α-motoneurons after SCI could have a neuroprotective effect on reflex response. Methods Rats underwent spinal cord transection at Th10 level followed by 7, 10, and 14 days of survival. The animals were treated with Baclofen (a gamma aminobutyric acid B receptor agonist, 3 μg/two times per day/intrathecally) applied for 3 days from the seventh day after transection; N-nitro-l-arginine (NNLA) (nNOS blocator) applied for the first 3 days after injury (20 mg/kg per day, intramuscularly); NNLA and Baclofen; or NNLA (60 mg/kg/day, single dose) applied on the 10th day after transection. We detected the changes in the level of nNOS protein, nNOS messenger RNA, and nNOS immunoreactivity. To investigate the reflex response to heat-induced stimulus, tail-flick test was monitored in treated animals up to 16 days after SCI. Results Our data indicate that Baclofen therapy is more effective than the combined treatment with NNLA and Baclofen therapy. The single dose of NNLA (60 mg/kg) applied on the 10th day after SCI or Baclofen therapy reduced nNOS expression in α-motoneurons and suppressed symptoms of increased reflex activity. Conclusions The results clearly show that increased nNOS expression in α-motoneurons after SCI may be pharmacologically modifiable with Baclofen or bolus dose of nNOS blocker. © 2015 Published by Elsevier Inc. Source
Katuchova J.,University Hospital and Safarik University |
Baumohlova H.,University Hospital and Safarik University |
Harbulak P.,University Hospital and Safarik University |
Stofcikova M.,Diagnostic Center |
And 3 more authors.
Journal of the Pancreas | Year: 2013
Context Accessory spleen is a congenital focus of healthy splenic tissue that is separated from the main body of spleen. Although an accessory spleen usually appears as an isolated asymptomatic abnormality, it may have clinical significance in some situations. Case report We report the case of 53-year-old woman with a 2-year history of upper abdominal discomfort after meals and weight loss. The pathologic lesion was diagnosed by the abdominal sonography and the magnetic resonance tomography in the pancreatic tail. The patient was operated with suspicion of a solid pseudopapillary neoplasm or a nonfunctioning islet cell tumor. Histopathological examination found an intrapancreatic accessory spleen, which is a congenital abnormality consisting of normal splenic tissue in ectopic sites. Conclusion We present possibilities of differential diagnosis of this entity. Source