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Start Over Creator Svoboda, J.

2. Changes of extracellular space volume and tortuosity in the spinal cord of lewis rats with experimental autoimmune encephalomyelitis

Creator:
Šimonová, Z., Svoboda, J., Orkand, P., Bernard, C. C. A., Lassmann, H., and Syková, E.
Type:
article, model:article, and TEXT
Subject:
astrogliosis, diffusion analysis, oedema, experimental autoimmune encephalomyelitis, and ion-selective microelectrodes
Language:
English
Description:
Three diffusion parameters of nervous tissue, extracellular space (ECS) volume fraction (λ), tortuosity (α) and non-specific uptake (k’) of tetramethylammonium (TMA + ), were studied in the spinal cord of rats during experimental autoimmune encephalomyelitis (EAE). The three parameters were determined in vivo from concentration-time profiles of TMA+ using ion-selective microelectrodes. EAE was induced by injection of guinea-pig myelin basic protein (MBP), which resulted in typical morphological changes in the CNS tissue, namely inflammatory reaction, astrogliosis, blood-brain barrier (BBB) damage and paralysis. EAE was accompanied by a statistically significant increase of a (mean±S.E.M.) in the dorsal horn from 0.21±0.01 to 0.28±0.02, in the intermediate region from 0.22±0.01 to 0.33±0.02, in the ventral horn from 0.23±0.01 to 0.47±0.02 and in white matter from 0.18±0.03 to 0.30±0.03. There were significant decreases in tortuosity in the dorsal horn and in the intermediate region and decreases in non-specific uptake in the intermediate region and in the ventral horn. Although the inflammatory reaction and the astrogliosis preceded and greatly outlasted the neurological symptoms, the BBB damage had a similar time course. Moreover, there was a close correlation between the changes in extracellular space diffusion parameters and the manifestation of neurological signs. We suggest that the expansion of the extracellular space alters the diffusion properties in the spinal cord. This may affect synaptic as well as non-synaptic transmission, intercellular communication and recovery from acute EAE, and may contribute to the manifestation of neurological signs in EAE rats.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Comparison of male and female rats in avoidance of a moving object: more thigmotaxis, hypolocomotion and fear-like reactions in females

Creator:
Svoboda, J., Telenský, P., Karel Blahna, Jan Bureš, and Aleš Stuchlík
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, fyziologie člověka, human physiology, gender differences, enemy avoidance task, strategies, anxiety, thigmotaxis, 14, and 612
Language:
English
Description:
Although male rats generally outperform females in many spatial tasks, sometimes gender differences are not present. This preliminary study examined gender effects in the Enemy avoidance task, in which a rat on a stable circular arena avoids approaching a small mobile robot while collecting randomly dispersed small pellets. Whenever distance between robot and the rat dropped below 25 cm, animal was punished by a mild footshock. Female rats showed thigmotaxis, hypolocomotion and avoidance of robot in the habituation phase, when approaches were not punished. No statistically significant differences in avoidance learning under reinforcement training sessions were observed; but females still spent significantly more time at periphery of the arena and foraged less than males. We conclude that females were able to perform at the same level as males under reinforcement despite different behavioral strategy. The thigmotaxic behavior appears to function as innate escape strategy in female rats triggered by the stressing effect of the moving robot rather then the presence of shocks., J. Svoboda, ... [et al.]., and Obsahuje seznam literatury
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6. Profil nemocných s akutním srdečním selháním léčených v přednemocniční péči

Creator:
Svoboda, J., Felšöci, Marián, Littnerová, Simona, Pařenica, Jiří, Pavlušová, Marie, Jarkovský, Jiří, and Špinar, Jindřich
Format:
print, text, and regular print
Type:
model:article, article, Text, práce podpořená grantem, and TEXT
Subject:
lidé, lidé středního věku, mužské pohlaví, staří, staří nad 80 let, ženské pohlaví, akutní nemoc, syndrom, srdeční selhání--diagnóza--mortalita--terapie, urgentní zdravotnické služby--statistika a číselné údaje, registrace, hospitalizace--statistika a číselné údaje, komorbidita, hypertenze--epidemiologie--komplikace, plicní edém--epidemiologie--komplikace, furosemid--terapeutické užití, dusičnany--terapeutické užití, stupeň závažnosti nemoci, statistika jako téma, ambulantní péče--statistika a číselné údaje, and databáze faktografické
Language:
Czech
Description:
Cíl: Popsat profil nemocných s akutním srdečním selháním (ASS) z pohledu přednemocniční péče v České republice. Metodika: Data pochází z registru Zdravotnické záchranné služby (ZZS) Jihomoravského kraje z období leden 2010–prosinec 2011. Byl proveden konsekutivní sběr nemocných s podezřením na ASS. Vyloučeni byli nemocní po kardiopulmonální resuscitaci nebo zemřelí před příjezdem ZZS nebo pacienti s dominantně extrakardiální příčinou dušnosti. Srovnáni jsou nemocní transportovaní do nemocnice oproti pacientům léčeným ambulantně. Cílovým parametrem je 30denní celková mortalita. Výsledky: Z celkového počtu 131 798 nemocných bylo podezření na ASS vysloveno ve 1 964 (1,5 %) případech. Konečná diagnóza ASS byla nakonec stanovena u 1 310 pacientů, kteří byli transportováni do nemocnice s předpokladem hospitalizace. Ambulantně bylo ošetřeno 35 nemocných. Průměrný věk celé populace byl 78 let, nejčastější komorbiditou byla hypertenze (67,0 %), u téměř poloviny jsou do doby předání do nemocnice přítomny známky plicního edému (46,4 %). Ambulantně léčení nemocní jsou častěji muži (71,4 % vs 49,1 %), mají menší výskyt komorbidit a nevykazují známky těžší respirační insuficience (kyslíková saturace 96 % oproti 87 %, žádné známky plicního edému). Nejčastěji aplikovaným lékem v přednemocniční péči u pacientů s podezřením na ASS je furosemid (74,0 %). Jednoměsíční mortalita souboru dosahovala 20,7 %. Závěr: ASS představuje 1,5 % všech volání ZZS pro akutní potíže, většina nemocných je transportována do nemocnice s předpokladem hospitalizace. Časná mortalita nemocných je vysoká. Klíčové slova: akutní – srdeční selhání – úmrtnost – zdravotnická záchranná služba, Purpose: To describe the profile and management of patients with acute heart failure (AHF) in pre‑hospital care in the Czech Republic. Methods: Registry data of the Emergency Medical System (EMS) of the South Moravian region of Czech Republic were used. Patients with suspected AHF were enrolled consecutively during the period of January 2010–December 2011. Excluded were patients who died or had cardiac arrest before the arrival of EMS and those who presented with dyspnea of dominantly extra-cardiac etiology. We compared patients who were transported to the hospital with those treated in an outpatient setting. Overall mortality within the first 30 days after the initial EMS contact was assessed as a main endpoint. Results: From the 131,798 of patients who called EMS, 1,964 (1.5%) of cases were suspected of having AHF. The diagnosis of AHF was determined in 1,310 patients who were transported to the hospital; 35 were treated in Outpatients. The mean age of the study population was 78 years, the most common comorbidity was hypertension (67.0%) and almost one half of the study population had signs of pulmonary edema before being admitted to hospital (46.4%). Patients not transported to hospital were more frequently of male gender (71.4% vs. 49.1%), with lower incidence of comorbid conditions and did not have signs of respiratory distress (oxygen saturation 96% vs. 87% in those transported to the hospital; no signs of pulmonary edema). The most common drug used in pre‑hospital care in patients with suspected AHF was furosemide (74.0% patients). The 30-day mortality rate of the whole study population reached 20.7%. Conclusion: AHF represents 1.5% of all emergency calls due to acute symptoms. The vast majority of the patients are transported to the hospital with the assumption of hospitalization. Early mortality rates of these patients are high. Keywords: acute – heart failure – survival – emergency medical system, and Svoboda J., Felšöci M., Littnerová S., Pařenica J., Pavlušová M., Jarkovský J., Špinar J.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public