The effect of exercise on gastric mucosal energy status has not been fully elucidated. The aim of this study was to evaluate the impact of submaximal cycling on gastric mucosal energy balance and its relationship to changes in systemic energy status. Ten healthy volunteers (age 20-40 years) were investigated at rest (BL), during 30 min of submaximal exercise (E) on bicycle ergometry and during the 30 min after the completion of cycling. Gastric mucosal PCO(2) ( P(gm)CO(2)) was measured by air tonometry at 10-min intervals and the gastric mucosal-arterial PCO(2) difference ( PCO(2)gap) was calculated. Hemodynamics, arterial blood gases, lactate and pyruvate were also measured. PCO(2)gap significantly increased throughout exercise [BL: 0.2 kPa (median), -0.1-0.6 kPa (25th-75th percentiles); E(10 min): 1.0 kPa, 0.8-1.7 kPa; E(20 min): 1.35 kPa, 0.8-1.8 kPa; E(30 min): 1.5 kPa, 0.9-2.0 kPa]. The early changes in PCO(2)gap ( PCO(2)gap at E(10 min) minus PCO(2)gap at BL) correlated significantly and positively with corresponding changes in arterial lactate ( r(2)=0.58, P<0.05) and lactate-to-pyruvate ratio ( r(2)=0.72, P<0.05). On recovery, all metabolic parameters normalized within 30 min. We conclude that submaximal cycling in volunteers leads to the early derangement of gastric mucosal energy balance. The time course of PCO(2)gap parallels changes in systemic energy status.

• MeSH
• cvičení fyziologie   MeSH
• dospělí MeSH
• energetický metabolismus fyziologie   MeSH
• krevní tlak fyziologie   MeSH
• kyselina mléčná metabolismus   MeSH
• kyselina pyrohroznová metabolismus   MeSH
• lidé MeSH
• oxid uhličitý krev   MeSH
• splanchnický oběh fyziologie   MeSH
• srdeční frekvence fyziologie   MeSH
• žaludeční sliznice krevní zásobení   metabolismus   MeSH
• zátěžový test MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mužské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• kyselina mléčná MeSH
• kyselina pyrohroznová MeSH
• oxid uhličitý MeSH

Thermoregulation in control subjects and cold-adapted winter swimmers was examined during 1 h of cold water immersion (13 C). It was found that the thermoregulatory functions of winter swimmers differ from those of non-cold-adapted subjects. As evident from the relationship between rectal temperature and the magnitude of cold thermogenesis, in controls a significant part of cold thermogenesis during the early phase of cooling was induced by changes in peripheral temperature input, while in the late phase of cooling it was the central temperature input which was mainly engaged in induction of cold thermogenesis. In winter swimmers the magnitude of cold thermogenesis was solely related to changes in rectal temperature, indicating the predominance of the central temperature input in activation of heat production mechanisms. The thermoregulatory threshold for induction of cold thermogenesis was lowered (by 0.34 C), but the apparent hypothalamic thermosensitivity was the same as in non-cold-adapted subjects. These differences are indicative of adaptation of thermoregulatory control centres. Additionally, the activity of thermoregulatory effectors was also changed. Shivering was induced later during cooling (after 40 min) in winter swimmers than in controls, which suggests an important participation of non-shivering thermogenesis in the early thermogenic response. Winter swimmers also showed bradycardia and a greater reduction in plasma volume during cooling. The data indirectly indicate restriction of heat loss from the body. Only a non-significant increase in quantity of subcutaneous fat was observed in winter swimmers. Thus, winter swimmers were able to survive a significantly greater temperature gradient between body and environment than non-cold-adapted subjects by modifying the sensory functions of hypothalamic thermoregulatory centres to lower heat loss and produce less heat during cold exposure. Additionally, the capacity of the total cold thermogenesis due to potentiation of non-shivering heat production was also increased. Heat produced due to thermogenic action of adrenaline may represent more than a quarter of the total cold thermogenesis. In conclusion, the data suggest that winter swimmers exhibit metabolic, hypothermic and insulative types of cold adaptation.

• MeSH
• adrenalin krev   MeSH
• dospělí MeSH
• fyziologická adaptace fyziologie   MeSH
• hemodynamika fyziologie   MeSH
• katecholaminy fyziologie   MeSH
• krevní tlak fyziologie   MeSH
• lidé MeSH
• nízká teplota MeSH
• noradrenalin krev   MeSH
• objem plazmy fyziologie   MeSH
• plavání fyziologie   MeSH
• srdeční frekvence fyziologie   MeSH
• tělesná teplota fyziologie   MeSH
• termoregulace fyziologie   MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• klinické zkoušky MeSH
• práce podpořená grantem MeSH
• Názvy látek
• adrenalin MeSH
• katecholaminy MeSH
• noradrenalin MeSH

Based on their own experience with a large group of patients with thyroid cancers, the authors confirm the higher prevalence of differentiated thyroid cancers both papillary and follicular (1 : 3,5) in females, while the differences in anaplastic and medullary cancers are much less prominent. Survival of females in univariate studies is much higher in both papillary and follicular cancers compared to males, in multivariate studies these differences lose their significance and only in papillary cancers under the age of 40 years at diagnosis and in a subgroup of papillofollicular cancers the differences retain their significance. The authors therefore deduce that differences found in univariate studies are significantly influenced by other factors such as age at the diagnosis and the spread of disease at the diagnosis.

• MeSH
• dospělí MeSH
• folikulární adenokarcinom epidemiologie   mortalita   MeSH
• karcinom epidemiologie   mortalita   MeSH
• lidé MeSH
• medulární karcinom epidemiologie   mortalita   MeSH
• míra přežití MeSH
• nádory štítné žlázy epidemiologie   mortalita   MeSH
• papilární karcinom epidemiologie   mortalita   MeSH
• prevalence MeSH
• sexuální faktory MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• anglický abstrakt MeSH
• časopisecké články MeSH
• Geografické názvy
• Česká republika epidemiologie   MeSH

The aim of this study was to investigate whether or not the human immune system can be activated by a noninfectious stimulus, thereby improving the physiological status of the individual. The effect of a single cold water immersion (14 degrees C for 1 h) on the immune system of athletic young men, monitored immediately after immersion, was minimal. With the continuation of the cold water immersions (three times a week for a duration of 6 weeks) a small, but significant, increase in the proportions of monocytes, lymphocytes with expressed IL2 receptors (CD25) and in plasma tumour necrosis factor alpha content was induced. An increase in the plasma concentrations of some acute phase proteins, such as haptoglobin and haemopexin, was also observed. After 6 weeks of repeated immersions a trend towards an increase in the plasma concentrations of IL6 and the amount of total T lymphocytes (CD3), T helper cells (CD4), T suppressor cells (CD8), activated T and B lymphocytes (HLA-DR) and a decrease in the plasma concentration of alpha 1-antitrypsin was observed. Concentrations of IL1 beta, neopterin, C-reactive protein, orosomucoid, ceruloplasmin, macroglobulin, immunoglobulins (IgG, IgM, IgA) and C3, C4 components of the complement, as well as the total number of erythrocytes, leucocytes, granulocytes and neutrophils showed no significant changes after the repeated cold water immersions. It was concluded that the stress-inducing noninfectious stimuli, such as repeated cold water immersions, which increased metabolic rate due to shivering the elevated blood concentrations of catecholamines, activated the immune system to a slight extent. The biological significance of the changes observed remains to be elucidated.

• MeSH
• dospělí MeSH
• imunitní systém fyziologie   MeSH
• lidé MeSH
• nízká teplota * MeSH
• tělesná teplota fyziologie   MeSH
• termoregulace fyziologie   MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH

BACKGROUND: Differentiated carcinoma of the thyroid gland is globally changing its character and occurrence frequency. METHODS: Retrospective analysis of patients sent to the Clinic of Nuclear Medicine in Prague, Motole in order to undergo the radioactive iodine therapy during the period from 1960 to 1993 in comparison to the set of patients of the 1950-1959 period. MAIN RESULTS: A conspicuous change took place in the proportion of papillary and follicular carcinomas. The previous predominance of follicular carcinoma has turned to the predominance of papillary carcinoma, the occurrence of which is increasing. The authors see the causes not only in introduction of iodidation which decreases the occurrence of more aggressive forms of differentiated carcinoma, but also in radioactive fall, as well as in the change of diagnostic procedures. CONCLUSIONS: The occurrence of differentiated carcinoma is so far increasing, but in the recent years the increase of more aggressive forms of the disease (follicular carcinoma) has ceased and an expressive increase of less aggressive papillary carcinoma is continuing. (Tab. 1, Ref. 14.).

• MeSH
• folikulární adenokarcinom epidemiologie   MeSH
• lidé MeSH
• nádory štítné žlázy epidemiologie   MeSH
• papilární karcinom epidemiologie   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• anglický abstrakt MeSH
• časopisecké články MeSH
• Geografické názvy
• Česká republika epidemiologie   MeSH

BACKGROUND: Repeated exposure to cold leads to a decline in the intensity of physiological defence reactions. In the complex of adaptational responses metabolic, thermogenic and insulation reactions predominate. The objective of the present investigation was to provide evidence of the predominating type of response of sportsmen exposed repeatedly to cold in an aqueous environment and to elucidate metabolic processes which serve to meet the energy demands of a certain type of adaptation to cold. METHODS AND RESULTS: The examination was made in a group of volunteers (men, mean age 21.0 +/- 1.8 years, height 1.80 +/- 0.04 m, body weight 77.0 +/- 3.1 kg, body fat 13.2 +/- 1.7%, anaerobic capacity expressed as maximum oxygen consumption 4.5 +/- 0.43 l.min-1). The cold acclimation programme involved immersion of the body into water 14 +/- 1 degree C 3 times a week for 1 month. During cold exposure the median body temperature before the acclimation programme dropped by 3.9 degrees C, after the acclimation programme by 4.1 degrees C. The total metabolic turnover after the programme declined by a 0.23 multiple of the metabolism at rest, at the end of the programme merely by a multiple of 0.07. During immersion the oxygen consumption doubled regardless of the stage of adaptation and an insignificant rise of non-esterified fatty acids occurred before the onset of the programme as well as after its termination. After the first exposure to cold a significant drop of the blood sugar was observed, while after the acclimation programme it increased insignificantly. The serum level of the thyroid stimulating hormone and triiodothyronine were affected only insignificantly by exposure to cold, the thyroxine level only at the borderline of significance before the onset of the acclimation programme. CONCLUSIONS: From values of the blood sugar level, respiratory quotient RQ, the non-esterified fatty acid level and body temperature at the periphery we may conclude that there is a restriction of the carbohydrate component as regards meeting energy demands of cold exposure before adaptation and a mixed type of meeting energy demands after termination of the cold acclimation programme.

• MeSH
• dospělí MeSH
• energetický metabolismus MeSH
• fyziologická adaptace fyziologie   MeSH
• krevní glukóza analýza   MeSH
• kyseliny mastné neesterifikované krev   MeSH
• lidé MeSH
• nízká teplota * MeSH
• spotřeba kyslíku MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mužské pohlaví MeSH
• Publikační typ
• anglický abstrakt MeSH
• časopisecké články MeSH
• Názvy látek
• krevní glukóza MeSH
• kyseliny mastné neesterifikované MeSH

The primary metastatic melanoblastoma presented with macroscopic haematuria as a first sign is described. So far it is our first experience with such a type of tumor in lower urinary tract in ageing man. The references in literature are scarce on this subject.

• MeSH
• lidé MeSH
• melanom * patologie   sekundární   MeSH
• nádory močového měchýře * patologie   MeSH
• senioři MeSH
• Check Tag
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• Publikační typ
• anglický abstrakt MeSH
• časopisecké články MeSH
• kazuistiky MeSH

To characterize fluid and ion shifts during 5-weeks cold adaptation, 6 nonadapted volunteers underwent cold acclimation programme (CAP), consisted of 1 h head-out immersion in water 14 +/- 1 degrees C 3 times a week. Blood samples were analyzed before/after the immersion and in the first and in the last week of CAP. Urine was collected for 10 h before, during, and after immersion for 4 h. Plasma volume (PV) decreased during first immersion (-18%) and less after CAP (-12). Blood volume reduction was 8.5% before and 5.2% after the CAP. Mean corpuscular volume was not changed either after the cold exposition or after the cold adaptation. The concentration of serum proteins increased by 12.1% after first immersion and by 8.1% after the CAP. The changes in serum concentration of Na+, K+ and Cl- before and after the CAP were not significant. Urine flow increased by 102% after first immersion, and by 165% after CAP. Urinary excretion of Na+ increased by 167% and 283%, excretion of K+ by 222% and 362% during first immersion and after CAP, respectively. Serum concentration of aldosterone increased nonsignificantly (+30%) during immersion before CAP and it did not changed after CAP. After the cold adaptation we observed the reduction of PV decrease, and increased diuresis with higher excretions of cations.

• MeSH
• aklimatizace * MeSH
• dospělí MeSH
• elektrolyty metabolismus   MeSH
• krevní objem * MeSH
• krevní proteiny analýza   MeSH
• lidé MeSH
• moč * MeSH
• nízká teplota * MeSH
• ponoření MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• Publikační typ
• anglický abstrakt MeSH
• časopisecké články MeSH
• Názvy látek
• elektrolyty MeSH
• krevní proteiny MeSH

The authors present the case-history of a patient with a cystic retroperitoneal lymphangioma. Its diagnosis was established only by histological examination of the resected tissue. The authors draw attention to the symptomatology, diagnosis, therapy and discuss contemporary views regarding the cause of this disease.

• MeSH
• lidé středního věku MeSH
• lidé MeSH
• lymfangiom cystický * diagnóza   terapie   MeSH
• retroperitoneální nádory * diagnóza   terapie   MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• Publikační typ
• anglický abstrakt MeSH
• časopisecké články MeSH
• kazuistiky MeSH

Losec (omeprazole) Astra Co. is a blocker of the proton pump of the parietal cell. It inhibits basal and stimulated HCl secretion. It is used for treatment of gastroduodenal ulcers, reflux oesophagitis and Zollinger Ellison's syndrome. In a group of 17 patients with duodenal ulcers the authors investigated the effect of omeprazole on (1) healing of duodenal ulcers and bulbitis after 2-4 weeks of therapy, (2) elimination of Helicobacter pylori in the antrum, (3) chronic antral gastritis. Ad 1. After two weeks of treatment the authors found that 5 of 17 chronic duodenal ulcers were healed in the remainder substantial regression was found. Four-week treatment led to healing of 16 from a total of 17 ulcers (P < 0.001), i. e. 94%. In subjects with ulcers and bulbitis (12 patients) the ulcer healed in 11 instances, in 7 patients residual bulbitis persisted. Ad 2. H. pylori was detected before treatment in 16 of 17 patients, after treatment only in 5 (P < 0.001). Ad 3. Chronic gastritis was recorded before treatment in all patients. Treatment reduced its activity and the presence of H. pylori.

• MeSH
• dvanáctníkové vředy farmakoterapie   mikrobiologie   patologie   MeSH
• gastritida farmakoterapie   mikrobiologie   patologie   MeSH
• Helicobacter pylori * účinky léků   izolace a purifikace   MeSH
• infekce vyvolané Helicobacter pylori farmakoterapie   patologie   MeSH
• lidé středního věku MeSH
• lidé MeSH
• omeprazol terapeutické užití   MeSH
• žaludek mikrobiologie   MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• omeprazol MeSH