Perinatal cerebral hypoxia represents a major cause of obstetric complications and the resulting transient oxygen deficiency might belong to early risk factors for schizophrenia. The aim of this study was to evaluate possible long-term behavioral changes induced by one hour of continuous bilateral common carotid artery occlusion in 12-day-old male rats. Post-ischemic behavioral disturbances were evaluated in social (play) behavior on postnatal day 22 (PND 22), open field test (PND 35 and 50) and prepulse inhibition of the acoustic startle reflex (PND 50). Transient ischemia in neonatal rats was not significantly altered in social dyadic interactions evaluated in pre-weaning pups, but resulted in enhanced locomotor activity in pubertal rats (PND 35) and impaired prepulse inhibition of the startle reflex in post- pubertal males (PND 50). These behavioral alterations suggest that perinatal hypoxic/ischemic insults may represent a risk factor for later manifestation of specific features relevant to schizophrenia in predisposed individuals., F. Tejkalová, M. Kaiser, J. Klaschka, F. Šťastný., and Obsahuje bibliografii a bibliografické odkazy
Large, ball rolling dung beetles (Coleoptera: Scarabaeidae: Scarabaeinae) are competitively dominant and can strongly influence community succession in dung pads. Ball production by Scarabaeus sacer Linnaeus was recorded in the Kizilirmak Delta on the Black Sea coast of Turkey by using artificial dung pads from 125 g to 2,000 g. Utilisation of pads across the 16-fold range of pad sizes demonstrated behavioural variation that may reduce intraspecies competition. Ball production was highly concentrated, with 66 balls (61%) produced from 8 pads of the 3 largest pad sizes, which may be related to chemical attraction between males and females. Ball size increased with increasing pad size (P < 0.05) but the number of balls produced per 100 g of dung decreased with increasing pad size (P < 0.01). Pad size for maximum ball production and ball size were 1,371 g and 1,260 g, respectively. The highest and lowest percentage of dung used for ball production was 43% of 125 g pads and 13% of 2,000 g pads, respectively. Ball production and time of day were significantly related (P < 0.01); S. sacer was almost exclusively nocturnal, with 59% of all balls produced between 21.00 and 22.00. This optimum period for ball production early in the night may be a compromise between reduced risk of predation and the increased energy costs of ball production as the temperature falls., Gregory T. Sullivan, Sebahat K. Ozman-Sullivan, Jean-Pierre Lumaret, Myron P. Zalucki, Greg Baxter., and Obsahuje bibliografii
In view of the high anti-oxidative potential oftocotrienol, the role of the tocotrienol-rich fraction (TRF) of palm oil in preventing pregnancy induced hypertension (PIH) was explored in a randomized double-blind placebo-controlled clinical trial in an urban teaching hospital. Healthy primigravidae were randomized to receive either oral TRF 100 mg daily or placebo, from early second trimester until delivery. Out of 299 women, 151 were randomized into the TRF arm and 148 into the placebo arm. A total of 15 (5.0%) developed PIH. Although there was no statistically significant difference in the incidence of PIH (4/151 or 2.6% in the TRF arm vs. 11/148 or 7.4% in the placebo arm, p = 0.058) between the two arms, there was a tendency towards a lower incidence of PIH in the TRF arm compared to the placebo arm. With TRF supplementation, the relative risk (RR) of PIH was 0.36 (95% CI 0.12-1.09). In conclusion, although TRF from palm oil does not statistically significantly reduce the risk of development of PIH in the population studied, the 64% reduction in incidence of PIH is substantial. The findings warrant further clinical trials, particularly in high risk populations. and ZA. Mahdy, HH. Siraj, H. Khaza'ai, MS. Mutalib, MH. Azwar, MA. Wahab, AZ. Dali, R. Jaafar, NA. Ismail, MA. Jamil, N. Adeeb
Primary hyperaldosteronism (PH) is frequently considered to be a secondary form of diabetes mellitus (DM). In our previous study we attempted to evaluate the prevalence of DM among patients with PH compared to control subjects with essential hypertension (EH). We have noted a relatively high prevalence of DM and impaired glucose tolerance in PH, but the differences between the PH and EH groups did not reach statistical significance. We performed this study to assess whether the effective treatment of PH (surgical and conservative) would improve the glucose tolerance. We have studied 24 patients with PH of the following two subtypes: aldosterone-producing adenoma (APA) treated with adrenalectomy and idiopathic hyperaldosteronism (IHA) treated with spironolactone. No significant changes of glucose levels were found in the 60th and 120th min of the oral glucose tolerance test (OGTT) in the APA group. On the other hand, fasting glucose levels were decreased significantly after adrenalectomy. Plasma glucose levels were significantly increased in the 60th min, but no differences were found in fasting values and in the 120th min in the IHA group. There was a significantly higher incidence of impaired glucose tolerance (36 % before, 45 % after treatment) and DM (9 %, 18 %) in the IHA group compared to the APA group (8 %, 32 %; DM 0 %, 0 %). In conclusion, the treatment of PH does not improve glucose tolerance. Mild worsening of glucose tolerance after treatment could be explained by an increase of the body mass index. These data, in accordance with our previous study, do not support the idea that PH is a secondary form of diabetes mellitus., B. Štrauch, J. Widimsky Jr., G. Šindelka, J. Škrha., and Obsahuje bibliografii
Anticonvulsant action of vigabatrin (300, 600, 900 and/or 1200 mg/kg i.p.), an inhibitor of GABA-transaminase, was studied in a model of motor sezures elicited by pentylenetetrazol. Five age groups of rats (7, 12, 18, 25 and 90 days old) received a s.c. injection of pentylenetetrazol 4, 6 and/or 24 hours after vigabatrin administration. The incidence of minimal, predominantly clonic seizures was not changed in any age group, but their latencies were prolonged in 18- and 25-day-old rats. Generalized tonic-clonic seizures were influenced in a more complex manner. Incidence of these seizures was decreased in 7-day-old rat pups 24 hours after vigabatrin administration. Higher doses of vigabatrin exhibited a similar effect in adult rats at all intervals studied. Specific suppression or at least restriction of the tonic phase was observed in all groups of immature rats, the effect was more marked 24 hours after vigabatrin than at shorter intervals. The anticonvulsant action of vigabatrin, which could be demonstrated mainly against generalized tonic-clonic seizures, varies markedly during development., R. Haugvicová, H. Kubová, P. Mareš., and Obsahuje bibliografii
Domácí nutriční podpora zahrnuje aplikaci enterální a parenterální výživy v domácím prostředí při selhání přirozeného způsobu výživy. Domácí enterální výživa používá různé modality a přístupové cesty při zachování funkce střeva. Chronické intestinální selhání indikuje závislost na domácí parenterální výživě, která je podávána dlouhodobými centrálními žilními vstupy. Domácí nutriční péče zlepšuje kvalitu života pacienta a je ekonomicky výhodnější ve srovnání s hospitalizační péčí., Home artificial nutrition includes application of enteral and parenteral nutrition in home environment, in cases of natural nutrition access failure. Home enteral nutrition uses various modality and ways, when persist the functional bowel. Chronic intestinal failure indicates dependence of home parenteral nutrition and is aplicated with central venous accesses. Home artificial nutrition improves patient´s quality of life and is more economical compared with hospital care., and Michal Šenkyřík
This study investigated quantitated expression of dopamine 2 receptor (D2R) and somatostatin receptors of the five types (SSTR1-SSTR5) in a large series of clinically non-functioning pituitary adenomas (CNFAs). Co-expression of these receptors in individual adenomas was studied as well as correlation between receptor types. Adenoma tissue from 198 patients who underwent surgery for CNFAs was analyzed by immunohistochemistry and quantitative real-time PCR. D2R and SSTR1-3 mRNA was expressed in all 198 adenomas. SSTR4 and SSTR5 were detectable in 85 % and 61 % of adenomas, respectively. Expression of D2R was significantly higher than that of the somatostatin receptors. The median relative expressions were as follows from highest D2R >> SSTR3 > SSTR2 > SSTR1 > SSTR5 > SSTR4. High relative expression (ratio to β-glucuronidase mRNA > 1) of D2R was found in 60 % of tumors, high expression of SSTR1 in 7.5 %, SSTR2 in 7 %, SSTR3 in 4 % and SSTR5 in 0.5 %. The quantity of D2R correlated positively with expression of SSTR2 and SSTR3, and negatively with SSTR1 and SSTR5. Among histological adenoma types, SSTR1 was significantly higher in null-cell adenomas and SSTR3 was lower in silent corticotroph adenomas. In conclusions, in CNFAs, high expression of somatostatin receptors is much less common than that of D2R, and co-expression of both these receptors is exceptional. D2R and SSTR3 seem to be the most promising targets for pharmacological treatment., F. Gabalec, M. Drastikova, T. Cesak, D. Netuka, V. Masopust, J. Machac, J. marek, J. Cap, M. Beranek., and Obsahuje bibliografii
Stadium III nemalobuněčného karcinomu plic (NSCLC) má nízké 5leté přežití (méně než 30 %). Abychom měli reálnou šanci zlepšit přežití nemocných, je nutné dodržet kvalitní staging a použít kvalitní léčbu. V rámci stagingu je důležité přesně určit postižení regionálních mízních uzlin a vyloučit generalizaci. Pro staging regionálních uzlin je doporučeno použití PET/CT trupu (pozitronové emisní tomografie/výpočetní tomografie). Pozitivní nálezy, měnící stadium, je doporučeno biopticky verifikovat. Indikace léčby je vždy přísně individuální, ideálně v rámci multidisciplinárních týmů; používáme léčbu multimodální, s využitím více léčebných metod (chemoterapie, radioterapie, operace). Nadějným příslibem do budoucna je pro nemocné se stadiem III imunoterapie., Stage III non-small-cell lung cancer (NSCLC) has a low 5-year survival rate (less than 30%). In order to have a real chance of improving patient survival, both staging and treatment must be of appropriate quality. During staging, it is important to precisely determine regional lymph node involvement and rule out generalization. PET/CT (positron emission tomography/computed tomography) of the torso is recommended to be used for regional lymph node staging. Positive findings that alter the stage are to be confirmed bioptically. Treatment is always indicated strictly individually, ideally within multidisciplinary teams; it is multimodal, using multiple therapeutic methods (chemotherapy, radiotherapy, surgery). For stage III patients, immunotherapy is a promising approach for the future., Gabriela Krákorová, and Literatura
V současné době jsou pro prevenci a léčbu tromboembolické nemoci k dispozici nová perorální antikoagulancia (NOAC), která jsou registrována pro vybrané indikace i v ČR. Jedná se o přímé perorální inhibitory trombinu (dabigatran etexilát) a přímé inhibitory faktoru Xa (apixaban a rivaroxaban), jejichž výhodou jsou některé vlastnosti, které nevykazují dosavadní „klasická“ antikoagulancia. I v souvislosti s novými antikoagulancii však řešíme některé problémy, jako jsou laboratorní monitoring v urgentních situacích účinné léčby a u krvácivých komplikací dosavadní absenci specifického antidota. Níže přiložený text předkládá indikace, dávkování, způsob eliminace, sledování účinnosti léčby či rizika krvácení a léčbu krvácivých komplikací., There are presently new oral anticoagulants (NOAC) for prevention and the treatment of thromboembolic diseases and they are registered in CZ. It concerns of orally direct inhibitors of thrombin (dabigatran etexilate), inhibitors of factor Xa (apixaban, rivaroxaban), respectively, with advantage of some properties not being seen in „classical” anticoagulants. In the use of new anticoagulants, however, are some problems – such as laboratory monitoring in urgent situations of effective treatment and the absence of specific antidote – resolved. The text below brings indications, dosage of the drugs, their elimination, follow-up of efficacy of the treatment or risk of the bleeding as well as the therapy of bleeding complications., and Jan Kvasnička, Miroslav Penka, Tomáš Kvasnička, Jana Michalcová, Zuzana Kudrnová, Ivana Malíková