Wyniki wyszukiwania

1

Carbon monoxide and cyanide poisonings of fire victims in medicolegal aspect

100%

Klys M., Klementowicz W., Duda U.

Acta Poloniae Toxicologica

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2000

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tom 08

|

nr 1

2

Determination of cyanide in coking plants waste waters using flow injection with spectrophotometric detection

75%

Michalski R., Glowala K.

Archiwum Ochrony Środowiska

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2006

|

tom 32

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nr 2

3

Nitric oxide and HCN reduce deep dormancy of apple seeds

75%

Bogatek R., Gniazdowska A.

Acta Physiologiae Plantarum

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2006

|

tom 28

|

nr 3

Nitric oxide (NO) and cyanide (HCN) are small gaseous molecules that have been intensively studied to explain their role in plant development, metabolism and reaction to stresses. Cyanide and NO are known to be produced endogenously during early phase of seed germination or are present in the environment. Both molecules regulate breakage of seed dormancy and accelerate seed germination. Regulatory role of cyanide in breaking of dormancy seems to be understood to some extend, while the NO mode of action is much less explained. However, some similarities could be suggested. The mechanisms involved in HCN-dependent dormancy breakage in apple embryos are summarized in relation to NO-donor mediated stimulation of germination.

4

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Respiratory surveillance and Ca2+-ATPase enzyme activity studies of Clarias gariepinus exposed to acute toxicity of cyanide

63%

Oseni K.

International Letters of Natural Sciences

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2016

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tom 50

Potassium cyanide, a highly contaminating and toxic aquatic ecosystems pollutant was investigated for acute toxicity on the freshwater fish Clarias gariepinus. Its effect on the Ca2+ - ATPase activities in the liver, gills, muscle and intestinal tissues and oxygen consumption index was studied. Short-term toxicity test was carried out by static renewal bioassay test over a 96 h period using a lethal concentration (LC50) value of 0.361mg/mL. Potassium cyanide was highly toxic to the animal tested. Results reveal that normal respiratory activity (O2 consumption) of the fish was significantly affected and there was significant decreased in the Ca2+ - ATPase activities at the end of exposure periods (24, 48, 72 and 96 h). Correlation analysis reveals a strong relationship between oxygen consumption index and ATPase enzyme activity of Clarias gariepinus exposed to the toxicant. This study reflects the toxic effect of potassium cyanide to the freshwater fish, Clarias gariepinus and suggestion on the possible application of Ca2+ -ATPase activities and oxygen consumption index as possible biomarkers for early detection of cyanide poisoning in aquatic bodies.

5

Cyanide-induced activation of the glutathione system in dormant apple embryos

63%

Dobrzynska U., Lata B., Bogatek R.

Biological Letters

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2005

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tom 42

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nr 2 Spec.Vol.

6

Cyanide and nitric oxide as regulatory factors of seed germination

63%

Dobrzynska U., Gniazdowska A., Babanczyk T., Bogatek R.

Biological Letters

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2005

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tom 42

|

nr 2 Spec.Vol.

7

Występowanie i oznaczanie cyjanków w ściekach

51%

Dozanska W.

Roczniki Państwowego Zakładu Higieny

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1957

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tom 08

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nr 6

8

Energetic coupling in mitochondria of a slime mould Dictyostelium discoideum

51%

Michejda J., Budzinska M., Marcinkowska A., Hryniewiecka L.

Biological Bulletin of Poznań

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1997

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tom 34

9

Water stress affects the beta-cyanoalanine synthase activity in flax seedlings

51%

Niedzwiedz-Siegien I., Niewiarowska A.

Biological Letters

|

2005

|

tom 42

|

nr 2 Spec.Vol.

10

Cyanide action in plants - from toxic to regulatory

51%

Siegien I., Bogatek R.

Acta Physiologiae Plantarum

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2006

|

tom 28

|

nr 5

Recent biochemical and genetic studies on hydrogen cyanide (HCN) metabolism and function in plants were reviewed. The potential sources of endogenous cyanide and the pathways of its detoxification are outlined and the possible signaling routes by which cyanide exerts its physiological effects are discussed. Cyanide is produced in plant tissues as the result of hydrolysis of cyanogenic compounds and is also released as a co-product of ethylene biosynthesis. Most cyanide produced in plants is detoxified primarily by the key enzyme P-cyanoalanine synthase. The remaining HCN at non-toxic concentration may play a role of signaling molecule involved in the control of some metabolic processes in plants. So, HCN may play a dual role in plants, depending on its concentration. It may be used in defense against herbivores at high toxic concentration and may have a regulatory function at lower concentration. Special attention is given to the action of HCN during biotic and abiotic stresses, nitrate assimilation and seed germination. Intracellular signaling responses to HCN involve enhancement of reactive oxygen species (ROS) generation and the expression of cyanide-insensitive alternative oxidase (AOX) and ACC synthase (ACS) genes. The biochemical and cellular mechanisms of these responses are, however, not completely understood.

11

Badania nad wpływem cyjanków na biocenozę wodną przy zastosowaniu Daphnia magna jako wskaźnika

45%

Cebejszek I., Just J.

Roczniki Państwowego Zakładu Higieny

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1959

|

tom 10

|

nr 5

12

Polifenole w moszczach i winach wisniowych

38%

Czyzowska A., Pogorzelski E.

Przemysł Fermentacyjny i Owocowo-Warzywny

|

2003

|

tom 47

|

nr 07-08

56-58

Badano związki polifenolowe w moszczach i winach wiśniowych. Zawartość polifenoli ogółem w winach wiśniowych kształtowała się na poziomie 850-1300 mg/dm3 w zależności od sposobu obróbki miazgi. W moszczach i winach, niezależnie od sposobu obróbki, stwierdzono występowanie antocyjanów, pochodnych cyjanidyny, flawanoli oraz pochodnych kwasu hydroksy cynamonowego. W moszczach i winach po obróbce pektyno litycznej zaobserwowano pojawienie się aglikonu - cyjanidyny.

Ograniczanie wyników

Carbon monoxide and cyanide poisonings of fire victims in medicolegal aspect

Determination of cyanide in coking plants waste waters using flow injection with spectrophotometric detection

Nitric oxide and HCN reduce deep dormancy of apple seeds

Respiratory surveillance and Ca2+-ATPase enzyme activity studies of Clarias gariepinus exposed to acute toxicity of cyanide

Cyanide-induced activation of the glutathione system in dormant apple embryos

Cyanide and nitric oxide as regulatory factors of seed germination

Występowanie i oznaczanie cyjanków w ściekach

Energetic coupling in mitochondria of a slime mould Dictyostelium discoideum

Water stress affects the beta-cyanoalanine synthase activity in flax seedlings

Cyanide action in plants - from toxic to regulatory

Badania nad wpływem cyjanków na biocenozę wodną przy zastosowaniu Daphnia magna jako wskaźnika

Polifenole w moszczach i winach wisniowych