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1

The structure of the jejunum in rabbit during prenatal development; LM and SEM study

100%

Jackowiak H., Glowacka M., Godynicki S.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2000

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tom 42

|

nr 1

2

The myoelectric activity of ileum in fasted and fed young pigs

88%

Romanski K. W., Rudnicki J., Slawuta P.

Journal of Physiology and Pharmacology

|

2001

|

tom 52

|

nr 4,2

To precise the character of myoelectric activity of distal small intestine, in 8 young pigs 1 bipolar electrode was attached at the serosal side of the jejunum and 7 electrodes were sutured at terminal ileum. After the recovery, the animals were fed twice daily during at least 2 weeks and were fasted 24 h before each experiment. Myoelectric activity was recorded with electroencephalograph throughout the experiment lasting 3—5 h. After control recording the standard food was given during the end of ileal phase 1 of migrating myoelectric complex (MMC) and registration of myoelectric activity was continued. Ileal propagated or non-propagated minute rhythm was observed in 64% of the experiments performed, during phase 2b of MMC. In most animals studied, the long isolated spike burst series lasting 1—6 min and short isolated spike burst series lasting 15—25 s were observed. Feeding induced myoelectric activity in the jejunum usually after 1—2 min and, in the ileum, during most episodes, after 2—9 min, for 4—10 min. During and after feeding, the short-lasting “transient fed pattern“ was observed. Mean propagation velocity of phase 3 MMC was 4.4 ± 0.8 and 8.1 ± 0.6 cm/min (mean ± S.E.M., p > 0.05) before and after feeding, respectively. Phase 3 MMC was preceded by 2—3 spike burst series lasting 40—70 s each before feeding and 1—3 min after feeding. Single propagated spike bursts arrived more frequently after feeding. Two types of minute rhythm, propagated and stationary, were observed. Giant spike bursts, propagated contractions and ultrarapid spike rushes were recorded occasionally. In conclusion, the myoelectric activity of terminal ileum in swine is eventful, exhibits wide range of irregularity and its response to feeding is relatively weak and delayed as compared to the upper small intestine.

3

Australian Hymenolepididae parasitizing birds. VI. Sobolevicanthus dobsoni sp. n. found in the wood duck Chenonetta jubata (Latham)

75%

Czaplinski B.

Bulletin of the Polish Academy of Sciences. Biological Sciences

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1989

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tom 37

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nr 4-6

4

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Effects of Se deficiency on serum histamine concentration and the expression of histamine H2 receptor in the jejunum of chickens

63%

Wang G., Wang H., Wang H.

Polish Journal of Veterinary Sciences

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2012

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tom 15

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nr 3

The present study was designed to investigate the influence of Se deficiency on serum histamine concentration and the expression of histamine receptor in the jejunum of chickens. Forty neonatal chickens were randomly divided into two groups. Experimental chickens were fed a low-Se diet (0.034 mg/kg), whereas chickens in the control group were fed a diet with a Se level of 0.229 mg/kg. Ten chickens were sacrificed on days 30, 45, 60 and 75. Blood and jejunum samples were collected. Histamine concentration in the jejunum was measured by ELISA, the jejunal mast cell (MC) ultrastructure was studied by transmission electron microscopy, and the expression level of histamine H2 receptor (H2R) mRNA in the jejunum was examined using real-time PCR. Results: The jejunal histamine concentration in chickens fed the low-Se diet was significantly higher than that in the control group (P<0.01). Se deficiency induced degranulation of MC in the jejunum of chickens in the low-Se diet group; their cytoplasm was filled with fused granules and vacuoles. The expression level of jejunal H2R mRNA in chickens fed the low-Se diet was also significantly higher than that in the control group (P<0.01). The results obtained suggest that Se deficiency stimulates MC degranulation and release of histamine, binding H2R promotes both regulation of digestion and cell proliferation while protects the jejunum from injury induced by Se deficiency.

5

Effect of fundectomy, antrectomy and gastrectomy on pancreatic and brush border enzyme activity in rats

63%

Kapica M., Puzio I.

Medycyna Weterynaryjna

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2018

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tom 74

|

nr 10

The aim of our study was to investigate the possible effects of the removal of different parts of the stomach (fundectomy, antrectomy, gastrectomy) on the total protein content and enzyme activity in the pancreas and the brush border of the intestinal mucosa. Twenty-four 2.5-month-old male Wistar rats were divided into four groups: sham-operated animals (SHO) and those subjected to gastrectomy (Gx), fundectomy (Fx), and antrectomy (ANT). After a six-week experiment, the rats were sacrificed, and blood was collected for further gastrin analysis in serum. Samples of the pancreas, duodenum, and jejunum (proximal part in 25% of length, middle part in 50% of length, and distal part in 75% of length) were collected to determine the total protein content and enzyme activity. The rats subjected to fundectomy, antrectomy and gastrectomy showed an increased total protein content and enzyme activity (amylase, trypsin) in pancreatic tissue. They exhibited an increase in the total protein content in the homogenates of the mucosa of the proximal, middle and distal jejunum, compared to the control, and a statistical increase in maltase activity. Compared with the control group, the rats subjected to Fx and ANT showed a decreased sucrase activity in the homogenates of the mucosa of the duodenum and of the proximal, middle and distal jejunum. In the gastrectomized rats, there was a statistically significant increase in the total protein content in the homogenates of the mucosa of the jejunum, compared to the control, while the activities of lactase and sucrase were decreased. There was a statistically significant increase in the gastrin level in all experimental groups (Fx, ANT, Gx). We suggest that surgical removal of a part of the stomach radically changes the level of hormones that determine many functions of the organism. Hormonal changes may have an impact on the pancreas and the activity of brush border enzymes.

6

Hymenolepis diminuta - caused inflammation via the increased expression and activity of COX-1 and COX-2 in the rat jejunum and colon

63%

Kosik-Bogacka D., Baranowska-Bosiacka I., Kolasa-Wolosiuk A., Lanocha-Arendarczyk N., Gutowska I., Korbecki J., Namieta H., Rotter I.

Annals of Parasitology

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2016

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tom 62

|

nr Suppl.

7

Does different approach during pancreatoduodenectomy influence intestinal migrating myoelectrical complex recovery? Study in experimental pig model

63%

Borycka-Kiciak K., Kiciak A., Zabielski R., Romanowicz-Barcikowska K., Tarnowski W., Bielecki K.

Journal of Physiology and Pharmacology

|

2013

|

tom 64

|

nr 3

8

Electron microscopy of jejunum of rats infected experimentally with Giardia muris

63%

Majewska A. C., Kasprzak W., Blotna-Filipiak M.

Acta Protozoologica

|

1990

|

tom 29

|

nr 1

9

Opioid agonist-antagonist effect of naloxone in modulating rabbit jejunum contractility in vitro

63%

Cosola C., Albrizio M., Guaricci A. C., De Salvia M. A., Zarrilli A., Sciorsci R. L., Minoia R.

Journal of Physiology and Pharmacology

|

2006

|

tom 57

|

nr 3

Opioid peptides are the most effective drugs in controlling pain; their action is elicited by binding to specific membrane receptors. The gastrointestinal tract represents, after the nervous system, the site in which the opioid receptors are expressed at high levels. The opioid agonist morphine has a significant inhibitory effect on intestinal motility, this action is blocked by naloxone an opioid antagonist mainly active at mu and kappa receptors. In this study the presence of mu opioid receptor on rabbit jejunum was investigated by western blot. The effects of beta-endorphin, the endogenous opioid peptide with the highest affinity to the mu opioid receptor and those of naloxone on spontaneous rabbit jejunum contractions were evaluated. Beta-endorphin (10-6M) showed a relaxant effect on jejunum contractility while naloxone showed a dual effect inducing an increase of spontaneous contractility at low concentrations (10-6M, 10-7M, 10-8M) and a decrease when high concentrations (10-3M, 10-4M, 10-5M) were utilized. The obtained results demonstrate that mu opioid receptor is expressed in rabbit jejunum and suggest that this receptor may be involved in mediating the effects of both opioid agonist and antagonist on jejunum contractions.

10

The role of Ca2plus in the contractility of rabbit small intestine in vitro

63%

Grasa L., Rebollar E., Arruebo M. P., Plaza M. A., Murillo M. D.

Journal of Physiology and Pharmacology

|

2004

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tom 55

|

nr 3

This study evaluated the role of Ca2+ in spontaneous and ACh- and KCl-induced contractions in longitudinal and circular smooth muscle from rabbit small intestine in vitro. In the first experiment, the amplitude, frequency and tone of spontaneous contractions in longitudinal and circular smooth muscle of small intestine were determined and, in the second experiment, the ACh- and KCl-induced responses of longitudinal and circular smooth muscle were measured. Atropine and guanethidine reduced the amplitude and tone of contractions in longitudinal and circular muscle, but reduced the frequency of contractions in circular muscle, only. TTX attenuated the amplitude of contractions and decreased the tone of contractions in longitudinal muscle, but increased the tone in circular muscle. Ca2+-free solutions, verapamil, nifedipine and caffeine diminished the three parameters of spontaneous contractions. Thapsigargin and cyclopiazonic acid increased the amplitude and tone of contractions in ileum longitudinal muscle, only, and cyclopiazonic acid increased the amplitude of contractions in circular muscle. Ca2+-free solutions, verapamil, nifedipine, thapsigargin, cyclopiazonic acid, and caffeine diminished ACh- and KCl-induced contractions. Those results suggest that extracellular Ca2+ plays a role in spontaneous contractions, and extracellular and intracellular Ca2+ participate in the ACh- and KCl-induced contractions of rabbit small intestine.

11

Sources of activator Ca2plus for galanin-induced contractions of rat gastric fundus, jejunum and colon

63%

Korolkiewicz R. P., Konstanski Z., Rekowski P., Ruczynski J., Szyk A., Korolkiewicz K. Z., Petrusewicz J.

Journal of Physiology and Pharmacology

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2000

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tom 51

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nr 4,2

12

Thyme and cinnamon extracts induce anion secretion in piglet small intestine via cholinergic pathways

51%

Boudry G., Perrier C.

Journal of Physiology and Pharmacology

|

2008

|

tom 59

|

nr 3

543-552

Thymol and cinnamaldehyde, extracted from thyme and cinnamon respectively, have multiple effects on mammalian cells. Although the intestinal mucosa is one of the first tissues they are in contact with when ingested, their effect on intestinal epithelial cells and especially ion secretion has not been established yet. The aim of this study was to investigate the effect of those two substances on electrolyte secretion and absorption across the porcine jejunal epithelium in Ussing chambers. Jejunal tissues from piglets were mounted in Ussing chambers and the short circuit current measured (Isc) after addition of thymol or cinnamaldehyde. Thymol and cinnamaldehyde induced a dose-dependent increase is Isc. The effect of thymol was inhibited in low Cl-, HCO3- free or low Cl-/ HCO3- free buffers. It was completely blocked when tissues were previously incubated with tetrodotxin and partially inhibited with hexamethonium. Cinnamaldehyde effect was inhibited when HCO3- free or low Cl-/ HCO3- free buffers were used. It was not affected by tetrodotoxin but reduced by hexamethonium, suggesting direct activation of receptors on epithelial cells. In conclusion, thymol induces Cl- and HCO3- secretion via activation of nervous nicotinic receptors while cinnamaldehyde induces HCO3- secretion probably via direct activation of nicotinic receptors on epithelial cells.

13

Morphology and morphometric analysis of selected elements of digestive tract in great cormorant Phalacrocorax carbo sinensis

51%

Dziala-Szczepanczyk E., Wilczynska I.

Electronic Journal of Polish Agricultural Universities. Series Biology

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2010

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tom 13

|

nr 4

14

Influence of low doses of deoxynivalenol on histopathology of selected organs of pigs

51%

Zielonka L., Wisniewska M., Gajecka M., Obremski K., Gajecki M.

Polish Journal of Veterinary Sciences

|

2009

|

tom 12

|

nr 1

Deoxynivalenol is one of mycotoxins that are most frequently determined in animal feed manufactured in Poland. The examination of histopathological lesions concomitant with deoxynivalenol intoxication is difficult because of the common, often synergistic, reaction of this mycotoxin with other toxins, such as zearalenone or ochratoxin A, which has a strong nephrotoxic activity. The possibility of estimating histopathological lesions in the course of intoxication with pure toxin at various doses is therefore of interest. Dosages used in this experiment relate to clinical cases observed in feeding the animals with whole ration feed obtained by processing feedingstuffs contaminated with Fusarium moulds. However, concerning the fact of one-shot administration of clinically pure toxin, the main question was if it was a sufficient dose to cause changes in the histopathological picture of gastrointestinal tract organs. The experiment was carried out on 12 nursery pigs of mixed breed (Polish White Large x Polish White Ear-pendent) with an average body weigh of 35 kg. The experimental nursery pigs were divided into 3 groups: group I (n=4) – control; group II (n=4) – DON administered at a dose of 0.2 mg/kg b.w.; group III (n=4) – DON administered at a dose of 0.4 mg/kg b.w. After slaughter of the animals, macroscopic examination was performed and segments of duodenum, jejunum, ileum, liver and mesenteric lymph nodes were sampled and assigned for histopathological examination. The results obtained equate to the clinically observed signs in swine production involving some nutrient metabolism disturbances in the gastrointestinal tract in the course of deoxynivalenol mycotoxicosis. Histopathological examination of segments of the duodenum, the jejunum, the ileum, the liver and the lymph nodes indicate that the regressive lesions are more expressed in the experimental group treated with the highest concentration of deoxynivalenol.

15

Papaverine should not be used as an indicator for controlling the ability of the gastrointestinal tract muscle to relax in vitro

51%

Chlopecka M., Dziekan N., Bakala A., Wiechetek M., Mendel M.

Medycyna Weterynaryjna

|

2007

|

tom 63

|

nr 11 Supl.

1437-1439

The aim of this research was to study the possibilities of using papaverine as a reference substance to control the ability of isolated gastrointestinal (GI) tract strips to relax. The effects of papaverine hydrochloride (0.001-100 µM) dissolved in distilled water, or in DMSO (0.5%), on the mechanical activity of isolated rat GI strips (stomach fundus and corpus, duodenum and jejunum) were studied. The obtained results show that papaverine provoked various responses of the examined muscle strips dependent on the part of GI tract and papaverine solvents used (water or DMSO). Papaverine applied as water solution caused muscle relaxation of all investigated gastrointestinal strips: the lowest effective (induced relaxation) concentration of papaverine was 10 µM for gastric corpus, jejunum and duodenum and 100 µM for gastric fundus. However, there was no dependence between the concentration of papaverine and the degree of muscle relaxation of the studied GI strips. Moreover, in case of gastric fundus strips, papaverine applied as 0.5% DMSO solution provoked different muscle responses: in the presence of 0.1 and 1 µM papaverine contraction occurred; administering papaverine at higher concentrations (10 and 100 µM) resulted in relaxation. The obtained results clearly indicate that papaverine does not fulfil the criteria set for the reference substance and should not be used as an indicator for controlling of gastrointestinal tract muscle relaxation in vitro.

16

Description of Neolepidapedoides subantarcticus sp. nov. (Digenea, Lepocreadiidae) from sub-Antarctic notothenioid fishes

51%

Jezewski W., Zdzitowiecki K., Laskowski Z.

Acta Parasitologica

|

2011

|

tom 56

|

nr 3

Neolepidapedoides subantarcticus sp. nov. (Digenea, Lepocreadiidae) is reported from the intestine, mainly the jejunum, of fishes in the eastern mouth of the Beagle Channel and in the harbour of Ushuaia in the Beagle Channel (Tierra del Fuego, Argentina) at a depth 7–30 m. The typical host is Patagonotothen longipes, other hosts are P. tessellata, P. brevicauda and Champsocephalus esox. The male terminal genitalia indicates that the new species belongs to the genus Neolepidapedoides (Lepocreadiidae, Lepocreadiinae). The most important taxonomic features are the presence of eye-spots, the spined tegument, the “Opechona-type” cirrus-sac, the external seminal vesicle free in the parenchyma, the gonads arranged in tandem, the vitelline follicles extending from the level of the oesophagus in the forebody to the posterior end of the body and an I-shaped excretory vesicle reaching to the intestinal bifurcation and the absence of a pseudoesophagus. Ten previously described species differ from the N. subantarcticus sp. nov. mainly in the extent of the vitelline fields and length of the excretory vesicle which reaches into forebody.

17

Effect of pectin on the changes in the stomach and jejunum bacteria reducing nitrates to nitrites in rats - short report

51%

Wawrzyniak A.

Polish Journal of Food and Nutrition Sciences

|

2000

|

tom 09/50

|

nr 2

The number of microorganisms in the jejunum and stomach of rats on pectin diet was found to be increased. In the case of animals fed diet with potassium nitrate and 10% pectin, methaemoglobin appeared in the blood, what was associated with increased number of the bacteria Enterobacteriaceae responsible for the reduction of nitrates to nitrites.

18

Composed influences of the amphibian cholecystokinin analogue - cerulein administered during various phases of the migrating myoelectric complex on duodenal, jejunal and ileal myoelectric activity in sheep

51%

Romanski K. W.

Bulletin of the Veterinary Institute in Puławy

|

2006

|

tom 50

|

nr 2

19

The influence of extrusion of faba bean seeds and supplementation of sulphur amino acids on performance, pancreatic trypsin activity, and morphological parameters of the jejunum in rats

51%

Leontowicz M., Leontowicz H., Biernat M., Gralak M. A., Kostyra H., Czerwinski J.

Journal of Animal and Feed Sciences. Supplement

|

2001

|

tom 10

|

nr 2

20

The influence of feeding raw vs extruded soyabean supplemented or unsupplemented with sulphur amino acids on performance, pancreatic trypsin activity and morphological parameters of the jejunum in rats

51%

Leontowicz H., Leontowicz M., Biernat M., Gralak M. A., Kostyra H., Czerwinski J.

Journal of Animal and Feed Sciences. Supplement

|

2001

|

tom 10

|

nr 2

Ograniczanie wyników

The structure of the jejunum in rabbit during prenatal development; LM and SEM study

The myoelectric activity of ileum in fasted and fed young pigs

Australian Hymenolepididae parasitizing birds. VI. Sobolevicanthus dobsoni sp. n. found in the wood duck Chenonetta jubata (Latham)

Effects of Se deficiency on serum histamine concentration and the expression of histamine H2 receptor in the jejunum of chickens

Effect of fundectomy, antrectomy and gastrectomy on pancreatic and brush border enzyme activity in rats

Hymenolepis diminuta - caused inflammation via the increased expression and activity of COX-1 and COX-2 in the rat jejunum and colon

Does different approach during pancreatoduodenectomy influence intestinal migrating myoelectrical complex recovery? Study in experimental pig model

Electron microscopy of jejunum of rats infected experimentally with Giardia muris

Opioid agonist-antagonist effect of naloxone in modulating rabbit jejunum contractility in vitro

The role of Ca2plus in the contractility of rabbit small intestine in vitro

Sources of activator Ca2plus for galanin-induced contractions of rat gastric fundus, jejunum and colon

Thyme and cinnamon extracts induce anion secretion in piglet small intestine via cholinergic pathways

Morphology and morphometric analysis of selected elements of digestive tract in great cormorant Phalacrocorax carbo sinensis

Influence of low doses of deoxynivalenol on histopathology of selected organs of pigs

Papaverine should not be used as an indicator for controlling the ability of the gastrointestinal tract muscle to relax in vitro

Description of Neolepidapedoides subantarcticus sp. nov. (Digenea, Lepocreadiidae) from sub-Antarctic notothenioid fishes

Effect of pectin on the changes in the stomach and jejunum bacteria reducing nitrates to nitrites in rats - short report

Composed influences of the amphibian cholecystokinin analogue - cerulein administered during various phases of the migrating myoelectric complex on duodenal, jejunal and ileal myoelectric activity in sheep

The influence of extrusion of faba bean seeds and supplementation of sulphur amino acids on performance, pancreatic trypsin activity, and morphological parameters of the jejunum in rats

The influence of feeding raw vs extruded soyabean supplemented or unsupplemented with sulphur amino acids on performance, pancreatic trypsin activity and morphological parameters of the jejunum in rats