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  1. 14 Journal of Animal and Feed Sciences

  2. 7 Bromatologia i Chemia Toksykologiczna

  3. 5 Annals of Animal Science. Supplement

  4. 4 Annals of Animal Science

  5. 4 Journal of Animal and Feed Sciences. Supplement

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  1. 10 Czauderna M.

  2. 10 Kowalczyk J.

  3. 9 Pieszka M.

  4. 7 Barowicz T.

  5. 6 Migdal W.

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  1. 2 2019

  2. 3 2012

  3. 2 2011

  4. 5 2010

  5. 6 2009

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1

Conjugated linoleic acid (CLA) and trans isomers of C18:1 and C18:2 acids in mould cheeses

100%
Paszczyk B., Borejszo Z., Luczynska J.
Polish Journal of Natural Sciences
|
2012
|
tom 27
|
nr 1
This study was aimed at determining the content of cis9transll C18:2 (CLA) acid and of trans isomers of C18:l and C18:2 acids in fat of mould cheeses originating from various producers (from different countries) available on the market in the city of Olsztyn. Analyses were carried out for 20 types of mould cheeses originating from different EU Member States, i.e. Poland (8 types) as well as Denmark, Germany, France and Italy (3 types from each country). The content of cis9transll C18:2 acid in fat of the analyzed mould cheese originating from Polish producers ranged from 0.25 to 0.64% and did not differ significantly (p>0.05) from that noted in fat extracted from cheeses originating from the other EU Member States. The content of this acid in cheeses from Denmark ranged from 0.50 to 0.54%, in those from Germany - from 0.44 to 0.81%, in those from Italy - from 0.48 to 0.51%, and in those from France - from 0.41 to 0.54% of the total fatty acid composition. Contents of trans isomers of C18:l acid in cheeses from Poland accounted for 1.94 to 2.64% of the total fatty acid composition. A similar content of those isomers was reported in the French cheeses. In turn, in the cheeses originating from Denmark, Germany and Italy the total content of C18:l trans isomers was found to be significantly (p≤0.05) higher. Trans isomers of C18:2 acid analyzed in the Polish cheeses constituted from 0.57 to 0.73%. In the cheeses from Denmark and France they were at a similar level, whereas in the cheeses from Germany and Italy the total content of those isomers was significantly (p ≤ 0.05) higher than in the Polish cheeses. The study demonstrated that the investigated mould cheeses originating from various producers and from various countries, and available on the Olsztyn market, were characterized by similar contents of CLA and diversified contents of trans isomers of C18:1 and C18:2 acids.
2

Effects of conjugated linoleic acid (CLA) on fatty acid composition, lipid oxidation and quality of pork meat

86%
Szymczyk B.
Annals of Animal Science
|
2005
|
tom 05
|
nr 1
3

Effect of conjugated linoleic acid (CLA) on pig performance, carcass quality, chemical composition of meat and serum lipid profile

86%
Szymczyk B.
Annals of Animal Science
|
2005
|
tom 05
|
nr 1
4

Effect of protected CLA and linseed on fatty acid profile and cholesterol level in some tissues of fattened lambs

86%
Borowiec F., Furgal K.
Polish Journal of Natural Sciences. Supplement
|
2006
|
tom 03
165-170
5

The effect of different levels of dietary conjugated linoleic acid (CLA) supplementation on the fattening results of Large White pigs

86%
Pieszka M., Pasciak P., Wojtysiak D., Barowicz T., Migdal W.
Annals of Animal Science. Supplement
|
2005
|
nr 1
6

An HPLC method for determining desirable or undesirable conjugated linoleic acid

86%
Czauderna M., Kowalczyk J., Potkanski A., Szumacher-Strabel M., Chojecki G.
Journal of Animal and Feed Sciences. Supplement
|
2001
|
tom 10
|
nr 2
7

Improvement of fatty acid profiles in sheep milk

86%
Szumacher-Strabel M., Potkanski A., Kowalczyk J., Cieslak A., Czauderna M.
Annals of Animal Science. Supplement
|
2003
|
nr 2
8

Determination of conjugated linoleic acid isomers by liquid chromatography and photodiode array detection

86%
Czauderna M., Kowalczyk J., Wasowska I., Niedzwiedzka K. M.
Journal of Animal and Feed Sciences
|
2003
|
tom 12
|
nr 2
9

The effect of dietary conjugated linoleic acid on the levels of lipids, cholesterol and iodothyronines in the blood of pigs

72%
Sechman A., Pieszka M., Rzasa J., Migdal W., Wojtysiak D., Pustkowiak H., Zivkovic B., Pasciak P.
Journal of Animal and Feed Sciences
|
2007
|
tom 16
|
nr 2
193-204
10

The effect of conjugated linoleic acid [CLA] addition to fodder on fattening effects, composition and quality traits of pigs` meat

72%
Migdal W., Barowicz T., Pieszka M., Pietras M., Kedzior W.
Polish Journal of Natural Sciences
|
2004
|
tom 16
165-172
11

Conjugated linoleic acid decreased serum triacyloglycerol and changed fatty acid composition in rat’s liver

72%
Kostogrys R. B., Pisulewski P. M.
Journal of Animal and Feed Sciences
|
2010
|
tom 19
|
nr 3
Extensive research have indicated that commercial conjugated linoleic acid (CLA), fed to laboratory animals, showed several health-related properties. The objective of this study was to assess the effect of CLA on serum lipid profile, plasma malondialdehyde and liver fatty acids profile in Wistar rats fed for 23 d. The experimental diets were: I-AIN-93G - control (C), II- AIN-93G diet + 1.0% CLA. The CLA oil contained 600 g CLA/kg, with equal representation of cis-9,trans-11 and trans-10,cis-12 CLA isomers. The experimental treatments had no effect on rats body weight, total cholesterol, HDL, LDL+VLDL and malondialdehyde. The triacylglycerol (TG) was significantly decreased after CLA supplementation. Liver weight, fat and histology were unchanged in CLA group. Liver cholesterol was insignificantly decreased in CLA diet. Dietary treatments had significant effects of on proportions of SFA and MUFA and PUFA in liver. In conclusion, CLA decreases serum TG. Additionally, liver fat composition were changed after CLA supplementation
12

The effect of conjugated linoleic acid isomers, selenite and selenized yeast supplemented to the diet on the fatty acid profile in the pancreas of rats

72%
Czauderna M., Kowalczyk J., Krajewska K. A.
Journal of Animal and Feed Sciences
|
2010
|
tom 19
|
nr 3
The influence of dietary conjugated linoleic acid (CLA) isomers (CLAmix) and/or Se as Na2SeO3 (SeIV) or selenized yeast (SeY) on the relative body weight gain (RBWG) of rats, pancreas weight, concentrations of CLA isomers and of other fatty acids (FA) in the pancreas were studied. For 6 weeks, female Wistar rats (aged 8 weeks) were fed ad libitum the Labofeed H diet enriched in 1.5% CLAmix, 0.2 ppm Se (LSe), 0.5 ppm Se (HSe) as SeIV (i.e. LSeIV or HSeIV, respectively), or SeY (i.e. LSeY or HSeY, respectively). Each group contained eight rats. The results documented that dietary LSeIV and CLAmix most effectively increased the RBWG of rats and feed conversion efficiency, while the diet with HSeIV most efficiently increased pancreas weight compared with the control rats. The diets enriched in CLAmix and Se as SeIV or SeY increased the sum of saturated fatty acids (SFA), the atherogenic SFA, A-SFA index, thrombogenic SFA (T-SFA), and the T-SFA index in the pancreas of rats compared with the control group. The diets containing CLAmix and Se as SeIV or SeY stimulated the accumulation of cis9trans11CLA, trans10cis12CLA, as well as the sum of all CLA isomers in the pancreas compared with rats fed the diet enriched in CLAmix. These diets increased the concentration of n-6 polyunsaturated FA (n-6 PUFA) and decreased the level of long-chain n-6 PUFA (Ln-6 PUFA) in the pancreas compared with the control rats and rats fed the diets with SeIV or SeY. The diets containing CLAmix and Se (as SeIV or SeY) increased the concentration of n-3 PUFA and Ln-3 PUFA in the pancreas compared with the control rats. Our study findings documenting that dietary Se and/or CLAmix and Se (as SeIV or SeY) considerably increased the concentration of PUFA, especially n-3 PUFA, improved the n-6 PUFA/n-3 PUFA ratio in the pancreas are valuable information for scientists carrying out research to improve animal and human health.
13
Content available remote

Prostaglandin E2 (PGE2) and thromboxane A2 (TXA2) synthesis is regulated by conjugated linoleic acids (CLA) in human macrophages

72%
Stachowska E., Dolegowska B., Dziedziejko V., Rybicka M., Kaczmarczyk M., Bober J., Rac M., Machalinski B., Chlubek D.
Journal of Physiology and Pharmacology
|
2009
|
tom 60
|
nr 1
77-85
Conjugated linoleic acid (CLAs) are positional and geometric isomers of linoleic acid with have a potential anti-atherosclerotic and anti-inflammation properties. Metabolites of arachidonic acid - prostaglandins and thromboxans are endogenous mediators of inflammation. Prostaglandin E2 and thromboxan A2 which are a products of two izoformes of cyclooxygenases (COX-1 and COX-2) in macrophages, play an important role in this process. COX - 1 is a constitutive enzyme, whereas the COX - 2 is inducible and its amount in the cell rapidly increases during inflammation (e.g. via NF B pathway). The aim of the study was to test the effect of CLAs on cyclooxygenases (COX-1 and COX-2) activity, their mRNA expression and protein content in macrophages. Additionally the active form of the kB (NF B) transcription factor was measured. For the experiments monocytes from monocytic cell line (THP-1) and from human venous blood were used. Monocytes were differentiated to macrophages and cultured with 30 µM CLAs or linoleic acid for 48 h. The COX-1 and COX-2 products - PGE2 and TXB2, were measured by ELISA method. The enzymes (COX-s) activity were estimated by spectroscopic method. mRNA expression and protein analysis were analysed by real-time PCR and Western blot technique. In macrophages cultured with CLAs reduction of TXB2 and PGE2 concentration was observed. Significant change in COX-2 expression in cells cultured with trans-10, cis-12 CLA (in macrophages obtained from peripheral blood) was observed. COX-1 inhibition was resulting from competition of CLA and linoleic acid with arachidonic acid.
14

Dietary conjugated linoleic acid and leucine improve pork intramuscular fat and meat quality

72%
Yu I. T., King Y. T., Chen S. L., Wang S. C., Chang Y. H., Yen H. T.
Journal of Animal and Feed Sciences
|
2007
|
tom 16
|
nr 1
65-74
15

Dietary conjugated linoleic acid isomers and selenium affect the profile of conjugated linoleic acid isomers and their metabolites in abdominal fat of rats

72%
Czauderna M., Kowalczyk J., Korniluk K.
Polish Journal of Natural Sciences. Supplement
|
2006
|
tom 03
563-568
16

Content of major isomers of CLA in abdominal fat of broiler chickens

72%
Jaskiewicz T., Sagan A., Zdybel B.
Inżynieria Przetwórstwa Spożywczego
|
2012
|
nr 3
17

Effect of dietary conjugated linoleic acid on laying hen performance, egg yolk fatty acid composition and egg quality during refrigerated storage

72%
Bolukbasi S. C., Erhan M. K.
Journal of Animal and Feed Sciences
|
2005
|
tom 14
|
nr 4
685-693
18

Influence of dietary CLA isomers and selenium compounds on the fatty acid and amino acid profiles in blood plasma of rats

72%
Niedzwiedzka K. M., Korniluk K., Kowalczyk J., Czauderna M.
Journal of Animal and Feed Sciences
|
2007
|
tom 16
|
nr 2
257-273
19
Content available remote

Conjugated linoleic acids diminish glycogen synthase and glycogen synthase kinase-3 expression in muscle cells of C57BL/6J mice - in vitro and in vivo study

72%
Szynkowska A., Siwiec E., Gutowska I., Baranowska-Bosiacka I., Szczuko M., Kotlega D., Marlicz W., Stachowska E.
Journal of Physiology and Pharmacology
|
2019
|
tom 70
|
nr 6
20

Preliminary screening of lactic and propionic acid bacteria for the synthesis of conjugated linoleic acid [CLA]

72%
Adamczak M., Bednarski W.
Polish Journal of Natural Sciences. Supplement
|
2004
|
tom 02
7-12
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