Wyniki wyszukiwania

1

A functional study of the dexamethasone-induced steroid receptor in Tetrahymena

100%

Kohidai L., Csaba G.

Acta Protozoologica

|

1990

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tom 29

|

nr 1

2

Ultrastructural studies on diurnal variations in mitochondria in various regions of the hepatic lobule

100%

Cieciura L., Okroj W., Krakowski G., Godlewski W.

Folia Histochemica et Cytobiologica

|

1985

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tom 23

|

nr 3

3

Influence of body carbohydrate store modification on catecholamine and lactate responses to graded exercise in sedentary and physically active subjects

100%

Mikulski T., Ziemba A., Nazar K.

Journal of Physiology and Pharmacology

|

2008

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tom 59

|

nr 3

603-616

Aim of this study was to elucidate the influence of carbohydrate store modification on exercise capacity and catecholamine thresholds. Nine sedentary students and 10 endurance athletes volunteered for the study consisting of four sessions in one-week intervals. During control session (C) subjects performed graded exercise till exhaustion with workload increasing by 50 Watts every 3 min after an overnight fast. Blood lactate and catecholamines were determined at rest, after each workload and at exhaustion. In the evening preceding each of the remaining three sessions subjects performed glycogen reducing exercise lasting 1.5 hrs at 70% HRmax. Till next morning they did not eat any meal but drank water. Two hours before exercise subjects were given either a high-carbohydrate (H-CHO) or a low-carbohydrate (L-CHO) meal of approx. 1000 kcal or remained fasted (F). Depletion of carbohydrate stores enhanced contribution of fat-derived energy substrates at submaximal workloads, but did not influence either maximal oxygen consumption, workload and lactate concentration or lactate threshold. Low carbohydrate availability resulted in elevated concentration of catecholamines only in untrained subjects. Ingestion of a meal either high or low in carbohydrates diminished those changes. Catecholamine thresholds were similar in all sessions and higher in athletes’ group.

4

Glycogen and glucose-6-phosphatase in liver during prenatal development in swine

100%

Bielanska-Osuchowska Z., Krzynowek-Wojciechowska J., Lakus D.

Folia Morphologica

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1990

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tom 49

|

nr 3-4

5

Activity of glycogen phosphorylase and level of glycogen during development of Ascaris suum [Nematoda] eggs

100%

Zoltowska K., Dmitryjuk M., Demianowicz W.

Acta Biologica Cracoviensia. Series Botanica et Zoologia. Supplement

|

1997

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tom 39

|

nr 1

6

Histological and histochemical studies on the olfactory rosette of Mugil parsia [Hamilton]

84%

Chakrabarti P.

Folia Morphologica

|

2005

|

tom 64

|

nr 1

41-46

The structure and functions of the olfactory organs in Mugil parsia (Ham.) has been described. Histologically each lamella consists of supporting, olfactory receptor, basal, labyrinth and mast cells. The distribution and localization of acid and neutral mucins in the various cells of olfactory epithelium in M. parsia has been studied histochemically. Variations in the localization of glycogen in the different cells of the olfactory epithelium have been correlated with the functional significance of the region concerned in the fish studied.

7

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Effect of exercise on energy substrates metabolism in tissues of adrenalectomized rats

84%

Gorski J., Nowacka M., Namiot Z., Kiryluk T.

Acta Physiologica Polonica

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1987

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tom 38

|

nr 4

8

Cytochemical and ultrastructural study on vitellogenesis in caryophyllidean cestode Khawia armeniaca [Cholodkovski, 1915]

84%

Swiderski Z., Brunanska M., Poddubnaya L. G., Mackiewicz J. S.

Acta Parasitologica

|

2004

|

tom 49

|

nr 1

Vitellogenesis in Khaxvia armeniaca was examined by means of transmission electron microscopy (TEM) and cytochemical staining with periodic acid-thiosemicarbazide-silver proteinate (PA-TSC-SP) for specific detection of glycogen at the ultrastructural level. Mature vitelline follicles consist of cells in various stages of development, progressing from immature cells of gonial type near the periphery to mature vitellocytes towards the centre. Maturation of vitelline cells is characterized by: (1) increase in cell volume; (2) increase in nuclear surface area restoring the N/C ratio; (3) nucleolar transformation; (4) extensive development of large parallel cisternae of GER, the shell-protein producing units; (5) development of Golgi complexes engaged in shell-granule/shell-globule vitelline material formation and package; (6) formation and storage of glycogen in the cytoplasm; (7) simultaneous, independent formation and storage of intranuclear glycogen; (8) continuous fusion of small shell-granules into larger shell-globules that fuse into large shell-globule clusters with a progressive increase in the number and size of the latter; and (9) degeneration of GER in the medial layer of vitellocyte cytoplasm with degenerative changes and accumulation of glycogen and shell-globule clusters within the cytoplasm, associated with a massive accumulation of glycogen in the nucleus. The functional significance of the large amount of nuclear and cytoplasmic glycogen and numerous shell-globule clusters is analysed. The ultrastructural aspect of vitellogenesis is compared with that in other monozoic and polyzoic cestodes. Conclusions concerning the interrelationships of vitellogenesis patterns and ultrastructural cytochemistry of mature vitellocytes to the various types of embryogenesis, are drawn and discussed.

9

Activity of glycogen depolymerizing enzymes in extracts from brain tumor tissue [anaplastic astrocytoma and glioblastoma multiforme]

84%

Kotonski B., Wilczek J., Madej J., Zarzycki A., Hutny J.

Acta Biochimica Polonica

|

2001

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tom 48

|

nr 4

An approximately threefold increase in glycogenolytic activity of the neutral a-1,4-glucosidase and a twofold increase in the same activity of the acid isoform have been found in extracts of anaplastic astrocytoma and glioblastoma multiforme tumors of brain tissue. "Maltase activity" of the respective enzymes increased by 60-80% in both kinds of tumor extracts. However a significant decrease in a-amylase and almost complete disappearance of phosphorylase activities have also been found in both kinds of tumors.

10

Glycogen is metabolized in organelles-glycosomes

83%

Kielan Rybicka K.

Wiadomości Parazytologiczne

|

1998

|

tom 44

|

nr 3

11

Seasonal changes in cryoprotectants concentrations in Helix pomatia snails

67%

Nowakowska A., Caputa M., Rogalska J.

Journal of Physiology and Pharmacology. Supplement

|

2006

|

tom 57

|

nr 8

93-105

Terrestrial snails are often exposed to freezing. Therefore, we investigated seasonal shifts in hemolymph concentrations of cryoprotectants such as glycerol and glucose. We also investigated whether summer acclimation to cold and short-day photoperiod induced synthesis of cryoprotectants in Helix pomatia snails. Concentrations of the both cryoprotectants were elevated in winter and reduced in summer. These changes, however, were not correlated with shifts in liver glycogen content. Summer acclimation to cold (5°C) and short-day photoperiod evoked a selective increase in glycerol concentration. In conclusion, glycerol may play a role in adaptation of the snails to winter cold and glucose is rather unlikely to provide the cryoprotection.

12

Spermatological characters of Acanthobothrium crassicolle Wedl, 1855 (Tetraphyllidea, Onchobothriidae), a parasite of the common stingray Dasyatis pastinaca

67%

Marigo A. M., Eira C., Ba C. T., Miquel J.

Acta Parasitologica

|

2011

|

tom 56

|

nr 2

We describe the spermiogenesis process and the ultrastructural characters of the spermatozoon of Acanthobothrium crassicolle by means of transmission electron microscopy, including cytochemical analysis for glycogen. Spermiogenesis in A. crassicolle begins with the formation of the differentiation zone that contains two centrioles associated with striated rootlets and an intercentriolar body. The latter is formed by one electron-dense layer. The centrioles develop into two free flagella that first grow orthogonally to a median cytoplasmic process and then undergo flagellar rotation becoming parallel to that median cytoplasmic process. After flagellar rotation only one of the flagella completes its growth and both short and long flagella undergo proximodistal fusion with the median cytoplasmic process. In the final stages of spermiogenesis, the nucleus becomes filiform and migrates into the spermatid body. Later, the ring of arched membranes constricts and the spermatozoon is liberated from the residual cytoplasm. The ultrastructural organization of the spermatozoon of A. crassicolle follows the general pattern of spermatozoa of the other Tetraphyllidea-Onchobothriidae species, but exhibits some differences. It is filiform, tapered at both extremities and lacks mitochondrion. It contains two axonemes of unequal length showing the 9 + “1“ pattern of Trepaxonemata, a nucleus, parallel cortical microtubules and electron-dense granules of glycogen. The anterior extremity of the male gamete contains a single crested body surrounding a thin and long apical cone. This type of apical cone has never been described in a tetraphyllidean spermatozoon. Another particularity is the presence of a single electron-dense microtubule at the vertex of the crested body.

13

Ultrastructural and cytochemical studies of GER-bodies in the intrauterine eggs of Wenyonia virilis Woodland, 1923 (Cestoda, Caryophyllidea)

67%

Mlocicki D., Swiderski Z., Mackiewicz J. S., Ibraheem M. H.

Acta Parasitologica

|

2011

|

tom 56

|

nr 1

Ultrastructural and cytochemical characteristics of GER-bodies observed in the vitellocyte cytoplasm of the intrauterine eggs of the caryophyllidean cestode Wenyonia virilis are described. In this species GER-bodies were observed only in the cytoplasm of vitellocytes, surrounded by a newly formed egg-shell. They are composed of spherical areas of condensed, electron-dense cytoplasm which contains concentrically arranged parallel lamellae of granular endoplasmic reticulum (GER), forming characteristic balls of different sizes. Each GER-body is surrounded by numerous free ribosomes, polyribosomes, α-glycogen rosettes and large mitochondria. Results of cytochemical analysis by means of PATSC-SP test for polysaccharides indicated that glycogen is absent within the GER-bodies, however, a strongly positive reaction was observed only in large aggregations of α-glycogen rosettes and β-glycogen particles, localised usually near GER-bodies.

14

The relationship between emotional state and the consumption of foods rich in carbohydrates by young adults

67%

Jaworski M., Szatanska M. I., Sawicka S.

Health Problems of Civilization

|

2016

|

tom 10

|

nr 2

Background. High intake of carbohydrates, especially simple sugars, by young adults is associated with the consumption of highly processed foods. This leads to the development of overweight, obesity and various somatic diseases. Identification of factors contributing to the increased consumption of this product group is a very important area of research in the field of public health. Emotional state may be one of such factors. This research aims at analyzing the relationship between consumption of selected groups of foods rich in carbohydrates and actual affective states on the one hand, and relatively constant emotional features on the other hand, in case of young adults. Material and methods. The study was conducted among 120 young adults aged between 18 and to 38 years old. The questionnaire research method, combined with prospective evaluation of diets technique, was used in the study. Two research instruments were used in the research: the scale of positive and negative feelings and food intake frequency questionnaire FQQ. Results. Our research confirmed the relationship between both affective state and relatively constant emotional features with consumption of selected products groups containing carbohydrates, especially simple sugars and glycogen, both in case of women and men. The said relationship has been demonstrated both in case of positive and negative emotions. The study did not confirm the relationship between affective state and consumption of chocolate. Conclusions. The observed relations can be used in the prevention of first degree, taking into account gender differences. It can also be used in potential therapeutic interactions, especially in the field of proper nutrition.

15

Metabolic and hormonal responses to body carbohydrate store depletion followed by high or low carbohydrate meal in sedentary and physically active subjects

67%

Mikulski T., Ziemba A., Nazar K.

Journal of Physiology and Pharmacology

|

2010

|

tom 61

|

nr 2

The study was designed to determine metabolic and hormonal responses to acute modification of body carbohydrate stores by exercise and subsequent meals and to find out whether the responses depend on the training status of subjects. Nine sedentary students and 10 endurance athletes took part in four experimental sessions. During control session, after overnight fast oxygen uptake and CO2 production were measured and blood glucose, free fatty acids (FFA), insulin (I), leptin (L), growth hormone (GH), testosterone (T), catecholamines, ACTH and cortisol were determined. The remaining sessions were preceded by 1.5 h exercise at 70% HRmax in the evening followed by 12-16 hrs fast till morning when subjects ate either high-carbohydrate (H-CHO) or low-carbohydrate (L-CHO) meal or fasted. Respiratory gases and blood samples were collected before and 2 hours after meal. In glycogen depleted subjects respiratory quotient (RQ), I, norepinephrine (NE) and L decreased, whilst other variables were unaltered. Changes in I and NE were greater in athletes than in sedentary subjects. After H-CHO RQ, blood glucose, I and NE increased and FFA, GH and T decreased. The latter effect was greater in athletes than in untrained subjects. After L-CHO, RQ was at the fasting level and FFA increased only in sedentary group. In both groups I increased and GH and T decreased. Neither meal affected L concentration. In conclusion, hormonal and metabolic changes observed after depleting carbohydrate stores resemble those occurring during starvation. Composition of the ingested meal affects postprandial metabolism, which additionally depends on the subjects’ training status.

16

Biosynthesis of starch

67%

Erlander S. R.

Żywność Technologia Jakość. Suplement

|

1998

|

tom 05

|

nr 4

112-123

17

Turning down lipid oxidation during heavy exercise - what is the mechanism?

67%

Sahlin K., Sallsttedt E.-K., Bishop D., Tonkonogi M.

Journal of Physiology and Pharmacology. Supplement

|

2008

|

tom 59

|

nr 7

18

Ultrastructural and cytochemical study on vitellogenesis in the diphyllidean cestode Echinobothrium euterpes (Echinobothriidae) and its phylogenetical implications

67%

Swiderski Z., Mackiewicz J. S., Eira C., Miquel J.

Acta Parasitologica

|

2011

|

tom 56

|

nr 2

The first description of vitellogenesis in the Diphyllidea is presented in this paper. Though the type of vitellogenesis and mature vitellocyte in Echinobothrium euterpes appear to be unique among the Eucestoda, however, they somewhat resemble that observed in the two orders of the lower cestodes, Tetraphyllidea and Proteocephalidea. Vitellocyte maturation is characterized by: (1) an increase in cell volume; (2) extensive development of short, parallel, frequently concentric cisternae of GER that produce dense proteinaceous granules; (3) development of Golgi complexes engaged in packaging this material; (4) progressive formation of saturated lipid droplets; their continuous enlargement and fusion; (5) formation of small accumulations of glycogen particles scattered between and among lipid droplets in the cytoplasm of maturing vitellocytes; (6) concentration of dense proteinaceous granules in the peripheral layer of cytoplasm, around the cell plasma membrane; and (7) vacuolization of cytoplasm of mature vitellocytes accompanied by a rapid increase in its volume. A new, unreported type of dense proteinaceous granules, situated around the limiting plasma membranes of mature vitellocytes, is described. Vitellogenesis evidently differs from that with typical shell-globules and shell-globule clusters previously reported in other taxa of lower cestodes. Cytochemical staining with periodic acidthiosemicarbazide-silver proteinate for glycogen indicates a strongly positive reaction for glycogen particles between and around large unsaturated lipid droplets of the maturing and mature vitellocytes. Some hypotheses concerning the interrelationship between this pattern of vitellogenesis, possible mode of egg formation, embryonic development and diphyllidean life cycle, and their phylogenetic implications are drawn and discussed.

19

The survival Ascaris suum in medium with different concentrations of sugars

67%

Zoltowska K., Lopienska E., Leszczynska K., Dmitryjuk M.

Wiadomości Parazytologiczne

|

1998

|

tom 44

|

nr 3

20

Sublethal effects of Danitol [Fenpropathrin], a synthetic pyrethroid, on Chinese grass carp, [Ctenopharyngodon idella]

67%

Ahmad F., Ali S. S., Shakoori A. R.

Folia Biologica

|

1995

|

tom 43

|

nr 3-4

Ograniczanie wyników

A functional study of the dexamethasone-induced steroid receptor in Tetrahymena

Ultrastructural studies on diurnal variations in mitochondria in various regions of the hepatic lobule

Influence of body carbohydrate store modification on catecholamine and lactate responses to graded exercise in sedentary and physically active subjects

Glycogen and glucose-6-phosphatase in liver during prenatal development in swine

Activity of glycogen phosphorylase and level of glycogen during development of Ascaris suum [Nematoda] eggs

Histological and histochemical studies on the olfactory rosette of Mugil parsia [Hamilton]

Effect of exercise on energy substrates metabolism in tissues of adrenalectomized rats

Cytochemical and ultrastructural study on vitellogenesis in caryophyllidean cestode Khawia armeniaca [Cholodkovski, 1915]

Activity of glycogen depolymerizing enzymes in extracts from brain tumor tissue [anaplastic astrocytoma and glioblastoma multiforme]

Glycogen is metabolized in organelles-glycosomes

Seasonal changes in cryoprotectants concentrations in Helix pomatia snails

Spermatological characters of Acanthobothrium crassicolle Wedl, 1855 (Tetraphyllidea, Onchobothriidae), a parasite of the common stingray Dasyatis pastinaca

Ultrastructural and cytochemical studies of GER-bodies in the intrauterine eggs of Wenyonia virilis Woodland, 1923 (Cestoda, Caryophyllidea)