Wyniki wyszukiwania

1

Polyamines as regulators of cell activation

100%

Kaminska B.

Acta Biochimica Polonica

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1993

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tom 40

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nr 3

2

Polyamines and phenolic compounds in lupin response to Pleiochaeta setosa

100%

Rybus-Zajac M., Kozlowska M., Kubis J.

Phytopathologia Polonica

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2002

|

tom 23

3

Role of polyamines in cytokinin-regulated physiological processes

100%

Legocka J., Zarnowska A.

Polish Journal of Natural Sciences. Supplement

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2003

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tom 01

4

Differential role of polyamines in hyperplasia and hypertrophy

100%

Manteuffel-Cymborowska M.

Acta Biochimica Polonica

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1993

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tom 40

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nr 3

5

Investigations about N-aminopropyl transferases probably involved in biomineralization

75%

Romer P., Faltermeier A., Mertins V., Gedrange T., Mai R., Proff P.

Journal of Physiology and Pharmacology. Supplement

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2008

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tom 59

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nr 5

27-37

6

Synergistic effect of DFMO and 2,4-D on regeneration of Tabernaemontana persicariaefolia Jacq in vitro

75%

Kodja H., Robene-Soustrade I., Figier J.

Acta Physiologiae Plantarum

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1997

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tom 19

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nr 3

Callus cultures of Tabernaemontana persicariaefolia, (Apocynaceae), an endangered species endemic to the Mascarene Islands, were established from leaf explants on MS medium containing either 5 mg·l⁻¹ 2,4-D and 0.5 mg·l⁻¹ BA or 5 mg·l⁻¹ 2,4-D, 0.5 mg·l⁻¹ BA and 200 mg·l⁻¹ DFMO. Histological studies showed regenerating nodules resembling globular embryos in calli after 4 weeks on the DFMO medium. Green shoot formation was achieved by sequential subculture of the induced calli on media with gradually decreasing 2,4-D concentrations (5→1→0 mg·l⁻¹). Regeneration was greatly stimulated in the presence of DFMO. The first emergence of shoots occured 3 weeks earlier than in untreated callus cultures.

7

The effect of spermidine on lipid peroxidation in wheat leaves during water stress

75%

Floryszak-Wieczorek J., Grabikowski E., Kubis J., Krzywanski Z.

Acta Physiologiae Plantarum

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1992

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tom 14

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nr 1

8

A spermine-resistant mutant of Arabidopsis thaliana displays precocious germination

75%

Mirza J. I., Rehman A.

Acta Physiologiae Plantarum

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1998

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tom 20

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nr 3

From an ethylmethane sulphonate-mutagenized M₂ population of Arabidopsis thaliana L. var Landsberg erecta, a mutant was isolated on the basis of its ability to germinate in the presence of a germination inhibitory concentration (0.35 mM) of spermine. The mutant produced yellowish green seeds that lacked a mucilaginous sheath, exhibited reduced dormancy and were generally viviparous under ambient conditions. Dose-response assays indicated increased resistance of the mutant to spermine but normal sensitivity to spermidine, putrescine and abscisic acid. The spermine resistance and the associated phenotype of the mutant was inherited as a single recessive nuclear mutation. Following the genetic analysis, spermine-resistant mutant has been designated as spr2. The results suggest a role for spermine in seed dormancy.

9

Fluctuation in free and conjugated polyamines in Scots pine seedlings after changes in temperature and daylength

75%

Sarjala T., Taulavuori K.

Acta Physiologiae Plantarum

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2004

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tom 26

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nr 3

10

Influence of polyamines on growth and formation of secondary metabolites in hairy root cultures of Beta vulgaris and Tagetes patula

75%

Bais H. P., Madhusudhan R., Bhagyalakshmi N., Rajasekaran T., Ramesh B. S., Ravishankar G. A.

Acta Physiologiae Plantarum

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2000

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tom 22

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nr 2

11

The effect of putrescine and spermine on the biochemical activity of Wolffia arrhiza [L.] Wimm. [Lemnaceae]

75%

Czerpak R., Piotrowska A., Kuklo E. S.

Polish Journal of Natural Sciences. Supplement

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2003

|

tom 01

12

The influence of polyamines on polymerase chain reaction [PCR]

75%

Fiedorow P., Szweykowska-Kulinska Z.

Acta Biochimica Polonica

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1997

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tom 44

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nr 1

Twelve different polyamines from three functional groups have been tested for their influence on polymerase chain reaction (PCR). Using crude total DNA from the liverwort Pellia borealis we have found that tri- and tetra mines can strongly improve the efficiency of PCR.

13

Roles of cellular polyamines in mucosal healing in the gastrointestinal tract

63%

Gao J.-H., Guo L.-J., Huang Z.-Y., Rao J. N., Tang C.-W.

Journal of Physiology and Pharmacology

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2013

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tom 64

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nr 6

14

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Comparison of nutrient content in fruit of commercial cultivars of eggplant (Solanum melongena L.)

63%

Ayaz F. A., Colak N., Topuz M., Tarkowski P., Jaworek P., Seiler G., Inceer H.

Polish Journal of Food and Nutrition Sciences

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2015

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tom 65

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nr 4

Eggplant (Solanum melongena L.) is one of the most popular common major vegetable crops worldwide. This study evaluated the nutritional content of seven commercial eggplant fruits in terms of fatty acid, mineral, sugar, organic acid, amino acid and polyamine contents. The most abundant fatty acid was linoleic acid (range, 39.14-53.81%, ave. 45%), and the most abundant mineral was K (range, 1556.2-3171.6 mg/kg fw, ave. 2331.9). The major organic acid was malic acid (range, 129.87-387.01 mg/g fw, ave. 157.49), and the major sugar was fructose (range, 1242.811379.77 mg/100 g fw, ave. 1350.88). The major polyamine was putrescine (11.54 and 25.70 nmol/g fw, ave. 17.86), and the major amino acid was glutamine (148.4 and 298.75 mg/100 g fw, ave. 219.74). Overall, taking into account the export potential of eggplants, these results may contribute to further studies aiming to improve other nutrient-rich varieties of eggplant in breeding programs.

15

Role of polyamines in gastroprotection induced by epidermal growth factor

63%

Brzozowski T., Drozdowicz D., Majka J., Polonczyk-Pytko J., Konturek S. J.

Journal of Physiology and Pharmacology

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1991

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tom 42

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nr 2

Polyamines have been shown to stimulate cellular growth and differentiation, though their role in the prevention of acute gastric lesion induced by various noxious agents has been little studied. Epidermal growth factor (EGF) exhibits gastroprotective and ulcer healing properties due to its potent mitogenic and growth promoting action. This study was designed to compare the gastroprotective effects of spermine and EGF against gastric damage induced by absolute ethanol, acidified aspirin and stress and to determine the role of endogenous polyamines in EGF-induced gast- troprotection. Spermine and EGF significantly reduced the lesions induced by all three ulcerogens. Oral administration of spermine or subcutaneous infusion of EGF in 24 h fasted rats with chronic gastric fistula resulted in similar inhibition of gastric acid and pepsin secretion. Pretreatment with difluoromethylornithine (DFMO), an irreversible inhibitor of ornithine decarboxylase (ODC), a hey enzyme in the biosynthesis of polyamines, did not affect ethanol lesions, but reversed the protective effect EGF but not spermine, against ethanol. This finding indicates that polyamines mediate, at least in part, EGF-induced gastroprotection. In tests with oral administration of aminoguanidine that is known to suppress the activity of diamino-oxidase (DAO) and to inhibit the degradation of polyamines, EGF showed a markedly enhanced gastroprotective activity against ethanol damage. Since indomethacin failed to affect the gastroprotective effects of spermine and EOF and neither of these agents influenced the mucosal generation of PGE₂ in intact or injured gastric mucosa, we conclude that prostaglandins are not the major factors in spermine- and EGF-induced gastroprotection. This study demonstrates that polyamines are highly effective against gastric lesions induced by various ulcerogens and that they act as primary mediators of EGF-induced gastroprotection.

16

Solcoseryl in prevention of stress-induced gastric lesions and healing of chronic ulcers

63%

Konturek S. J., Drozdowicz D., Pytko-Polonczyk J., Brzozowski T., Bielanski W.

Journal of Physiology and Pharmacology

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1991

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tom 42

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nr 1

Solcoseryl, a deproteinized extract of calf blood, protects the gastric mucosa against various topical irritants and enhances the healing of chronic gastric ulcerations but the mechanisms of these effects have been little studied. This study was designed to elucidate the active principle in Solcoseryl and to determine the role of prostaglandisn (PG) and polyamines in the antiulcer properties of this agent. Using both, the radioimmunoassay and radioreceptor assay, EGF-like material was detected in Solcoseryl preparation. Solcoseryl given s. c. prevented the formation of stress-indused gastric lesions and this was accompanied by an increase in the generation of PGE2 in the gastric mucosa. Similar effects were obtained with EGF. Pre treatment with indomethacin, to suppress mucosal generation of prostaglandins (PG), greatly augmented stress- induced gastric ulcerations and antagonized the protection exerted by both Solcoseryl and EGF. Solcoseryl, like EGF, enhanced the healing of chronic gastroduodenal ulcerations. This effect was abolished by the pretreatment with difluoro- methylomithine, an inhibitor of ornithine decarboxylas, the key enzyme in the biosynthesis of polyamines. The healing effects of Solcoseryl and EGF was also reduced by prednisolone which decreased the angiogenesis in the granulation tissue in the ulcer area. These results indicate that Solcoseryl 1. contains EGF-like material, 2. displays the protective and ulcer healing effects similar to those of EGF and involving both PG and polyamines and 3. acts via similar mechanism as does EGF.

17

ROS and RNS are required for polyamines-dependent germination of apple (Malus domestica Borkh.) embryos

63%

Budnicka K., Krasuska U., Bogatek R., Gniazdowska A.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 2

18

Mass spectrometry-based identification of transglutaminase protein substrates in senescing chloroplasts of barley leaves

63%

Sobieszczuk-Nowicka E., Luczak M., Legocka J.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 3

19

Role of polyamines in the cytokinin-dependent physiological processes. II. Modulation of polyamine levels during cytokinin-stimulated expansion of cucumber cotyledons

63%

Legocka J., Zarnowska A.

Acta Physiologiae Plantarum

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2000

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tom 22

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nr 4

20

Polyamines and cell migration

63%

McCormack S. A., Johnson L. R.

Journal of Physiology and Pharmacology

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2001

|

tom 52

|

nr 3

Ograniczanie wyników

Polyamines as regulators of cell activation

Polyamines and phenolic compounds in lupin response to Pleiochaeta setosa

Role of polyamines in cytokinin-regulated physiological processes

Differential role of polyamines in hyperplasia and hypertrophy

Investigations about N-aminopropyl transferases probably involved in biomineralization

Synergistic effect of DFMO and 2,4-D on regeneration of Tabernaemontana persicariaefolia Jacq in vitro

The effect of spermidine on lipid peroxidation in wheat leaves during water stress

A spermine-resistant mutant of Arabidopsis thaliana displays precocious germination

Fluctuation in free and conjugated polyamines in Scots pine seedlings after changes in temperature and daylength

Influence of polyamines on growth and formation of secondary metabolites in hairy root cultures of Beta vulgaris and Tagetes patula

The effect of putrescine and spermine on the biochemical activity of Wolffia arrhiza [L.] Wimm. [Lemnaceae]

The influence of polyamines on polymerase chain reaction [PCR]