-
Je něco špatně v tomto záznamu ?
Depression and/or potentiation of cortical responses after status epilepticus in immature rats
G. Tsenov, P. Mareš
Jazyk angličtina Země Česko
E-zdroje NLK Online
Directory of Open Access Journals od 1991Free Medical Journals od 1998
ProQuest Central od 2005-01-01
Medline Complete (EBSCOhost) od 2006-01-01
Nursing & Allied Health Database (ProQuest) od 2005-01-01
Health & Medicine (ProQuest) od 2005-01-01
ROAD: Directory of Open Access Scholarly Resources od 1998
- MeSH
- deprese etiologie patofyziologie MeSH
- epilepsie enzymologie etiologie patofyziologie MeSH
- evokované potenciály účinky léků MeSH
- financování organizované MeSH
- implantované elektrody virologie MeSH
- interpretace statistických dat MeSH
- pilokarpin škodlivé účinky MeSH
- potkani Wistar MeSH
- vývojová biologie metody MeSH
Lithium-pilocarpine status epilepticus (SE) resulted in delayed changes of single cortical interhemisperic (transcallosal) responses in immature rats. Low-frequency stimulation inducing depression and/or potentiation was studied to analyze possible dynamic changes in cortical responses. Status was elicited in 12-day-old (SE12) or 25-day-old (SE25) rats. Control siblings received saline instead of pilocarpine. Interhemispheric responses were elicited by stimulation of the sensorimotor region of the cerebral cortex 3, 6, 9, 13, or 26 days after status. A series of 5 biphasic pulses with intensity equal to twofold threshold were used for stimulation. The interval between pulses was 100, 125, 160, 200 or 300 ms, eight responses were always averaged. Peak amplitude of the first positive, first negative and second positive waves was measured and responses to the second, third, fourth and fifth pulse were compared with the first one. Animals after status epilepticus as well as lithium-paraldehyde controls exhibit a frequency depression at nearly all the intervals studied. An outlined increase of responses in SE rats in comparison with the controls three days after SE stayed just below the level of statistical significance. In addition, animals in the SE12 group exhibited potentiation of responses at this interval after SE. With longer intervals after SE, the relation between SE and control animals changed twice resulting in a tendency to lower amplitude of responses in SE than in control rats 26 days after SE. Rats in the SE25 group exhibited higher responses than controls 13 days after status, but this difference was not present at the longest interval after SE. Low-frequency stimulation did not reveal increased cortical excitability as a long-lasting consequence of status epilepticus induced in immature rats. In addition, the outlined differences between SE and control rats changed with the time after SE.
Lit.: 31
- 000
- 03732naa 2200409 a 4500
- 001
- bmc07509156
- 003
- CZ-PrNML
- 005
- 20111210123426.0
- 008
- 080922s2007 xr e eng||
- 009
- AR
- 040 __
- $a ABA008 $b cze $c ABA008 $d ABA008 $e AACR2
- 041 0_
- $a eng
- 044 __
- $a xr
- 100 1_
- $a Tsenov, Grigorij, $d 1980- $7 xx0103054
- 245 10
- $a Depression and/or potentiation of cortical responses after status epilepticus in immature rats / $c G. Tsenov, P. Mareš
- 314 __
- $a Department of Developmental Epileptology, Institute of Physiology, Academy of Sciences of the Czech Republic, Prague
- 504 __
- $a Lit.: 31
- 520 9_
- $a Lithium-pilocarpine status epilepticus (SE) resulted in delayed changes of single cortical interhemisperic (transcallosal) responses in immature rats. Low-frequency stimulation inducing depression and/or potentiation was studied to analyze possible dynamic changes in cortical responses. Status was elicited in 12-day-old (SE12) or 25-day-old (SE25) rats. Control siblings received saline instead of pilocarpine. Interhemispheric responses were elicited by stimulation of the sensorimotor region of the cerebral cortex 3, 6, 9, 13, or 26 days after status. A series of 5 biphasic pulses with intensity equal to twofold threshold were used for stimulation. The interval between pulses was 100, 125, 160, 200 or 300 ms, eight responses were always averaged. Peak amplitude of the first positive, first negative and second positive waves was measured and responses to the second, third, fourth and fifth pulse were compared with the first one. Animals after status epilepticus as well as lithium-paraldehyde controls exhibit a frequency depression at nearly all the intervals studied. An outlined increase of responses in SE rats in comparison with the controls three days after SE stayed just below the level of statistical significance. In addition, animals in the SE12 group exhibited potentiation of responses at this interval after SE. With longer intervals after SE, the relation between SE and control animals changed twice resulting in a tendency to lower amplitude of responses in SE than in control rats 26 days after SE. Rats in the SE25 group exhibited higher responses than controls 13 days after status, but this difference was not present at the longest interval after SE. Low-frequency stimulation did not reveal increased cortical excitability as a long-lasting consequence of status epilepticus induced in immature rats. In addition, the outlined differences between SE and control rats changed with the time after SE.
- 650 _2
- $a epilepsie $x enzymologie $x etiologie $x patofyziologie $7 D004827
- 650 _2
- $a potkani Wistar $7 D017208
- 650 _2
- $a pilokarpin $x škodlivé účinky $7 D010862
- 650 _2
- $a vývojová biologie $x metody $7 D015509
- 650 _2
- $a evokované potenciály $x účinky léků $7 D005071
- 650 _2
- $a deprese $x etiologie $x patofyziologie $7 D003863
- 650 _2
- $a implantované elektrody $x virologie $7 D004567
- 650 _2
- $a interpretace statistických dat $7 D003627
- 650 _2
- $a financování organizované $7 D005381
- 700 1_
- $a Mareš, Pavel, $d 1937- $7 jo20000074131
- 773 0_
- $w MED00003824 $t Physiological research $g Roč. 56, č. 4 (2007), s. 485-491 $x 0862-8408
- 856 41
- $u http://www.biomed.cas.cz/physiolres/pdf/56/56_485.pdf $y plný text volně přístupný
- 910 __
- $a ABA008 $b A 4120 $c 266 $y 1
- 990 __
- $a 20080919102413 $b ABA008
- 991 __
- $a 20080922095339 $b ABA008
- 999 __
- $a ok $b bmc $g 624750 $s 477185
- BAS __
- $a 3
- BMC __
- $a 2007 $b 56 $c 4 $d 485-491 $i 0862-8408 $m Physiological research $x MED00003824
- LZP __
- $a 2008-21/dkal