Wyniki wyszukiwania - AGRO

1

Molecular basis for the functional diversity of enzyme forms of the LMW [Mr 38000] acid phosphatase of the frog liver

100%

Kubicz A.

Acta Biochimica Polonica

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1992

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tom 39

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nr 2

Recent studies on the structure and function of the tartrate-resistant acid phosphatase (Mr 38 000) of the frog liver arc reviewed. The nature of the enzyme heterogeneity is elucidated on a molecular and physiological basis. The following structure-activity relationship is proposed: the enzyme protein is modified by glycosylation processes leading to formation of the different enzyme forms. The oligosaccharide chain stabilizes the final structure of the enzyme forms with altered conformation causing different exposure of the essential functional groups (e.g. sulfliydryl residues, antigen determinants). This leads to different physiological events necessary for fulfillment of metabolic requirements of the cell.

2

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Selection of calling sites by Pelophylax porosus porosus (Anura: Ranidae)

88%

Takahashi K., Takeuchi H.

Acta Biologica

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2021

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tom 28

3

The effect of cholinergic receptors on ionic transport in the skin of a frog Rana esculenta L.

88%

Kosik-Bogacka D., Tyrakowski T.

Zoologica Poloniae

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2001

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tom 46

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nr 1-4

4

The effect of adrenergic receptors on ionic transport in the skin of a frog Rana esculenta L.

88%

Kosik-Bogacka D., Tyrakowski T.

Zoologica Poloniae

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2001

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tom 46

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nr 1-4

5

Competition between tadpoles of water frogs of the Rana esculenta complex

88%

Berger L., Rybacki M.

Zoologica Poloniae

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1997

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tom 42

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nr 1-4

6

Immunolocalization of the TASK2 potassium channel in frog kidney

75%

Nesovic-Ostojic J., Markovic-Lipkovski J., Todorovic J., Cirovic S., Kovacevic S., Paunovic A., Cemerikic D., Milovanovic A.

Folia Biologica

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2016

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tom 64

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nr 3

7

Melanophores inside frogs

75%

Pshennikova E. S., Voronina A. S.

International Letters of Natural Sciences

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2018

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tom 71

Melanocytes/melanophores were known for some decades as pigment cells in skin. The origin of these cells in embryogenesis from neural crest cells is actively investigated now. Some melanocytes/melanophores were described inside adult vertebrates. Historically, these internal melanocytes have been largely ignored, until recently. In frogs, the melanophores populate not only the skin, but all the inner connective tissues: epineurium, peritoneum, mesentery, outer vascular layer and skin underside. In adult avian, melanocytes were also found in visceral connective tissues, periostea, muscles, ovaries and the peritoneum. In mammals and humans, melanocytes are also revealed in eyes, ears, heart and brain. A black-brownish pigment, which can be found in brains of humans and some mammals, was called neuromelanin. Currently, attempts are being made to treat neurodegenerative diseases and various nerve injuries with medications containing melanin. In this micro-review, we wanted to remind again about the inner melanophores on visceral organs and lining blood vessels and nerves, their importance in organisms resistance to adverse environmental factors.

8

General remarks on the study of water frogs

75%

Tunner H. G.

Zoologica Poloniae

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1994

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tom 39

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nr 3-4

9

Modulatory effect of divalent metal cations on the phosphotyrosine activity of the frog liver acid phosphatase

75%

Szalewicz A., Strzelczyk B., Kubicz A.

Acta Biochimica Polonica

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1999

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tom 46

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nr 1

Frog liver acid phosphatase hydrolyzes phosphotyrosine at acidic pH optimum. Mn2+, Ca2+ and Mg2+ (but not Zn2+) ions modulate this activity by shifting its pH optimum to physiological pH. This effect is not observed when p-nitrophenylphos-phate is used as a substrate. Phosphoserine and phosphothreonine are not hydrolyzed under the same conditions.

10

Do pesticides affect the thermal behaviour in Amphibia?

75%

Grajpel B., Tegowska E.

Pestycydy

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2004

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nr 3-4

11

Is the pool of oocytes in the grass frog, Rana temporaria, established in the juvenile ovary?

75%

Doruch A., Ogielska M.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2000

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tom 42

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nr 1

12

Mitotic activity of oogonia in juvenile frog ovaries

75%

Doruch A., Ogielska M.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2000

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tom 42

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nr 1

13

Parasite fauna of alimentary tracts of frogs of the family Ranidae from Polish Western Pomerania

75%

Pilecka-Rapacz M.

Wiadomości Parazytologiczne

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1998

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tom 44

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nr 3

14

A new helmeted frog of the genus Thaumastosaurus from the Eocene of England

75%

Holman J. A., Harrison D. L.

Acta Palaeontologica Polonica

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2003

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tom 48

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nr 1

Helmeted frogs with co−ossified skulls (Thaumastosaurus) were previously known in Europe only in the Eocene on the basis of Thaumastosaurus bottii from southwestern France and Thaumastosaurus wardi from coastal southern England. We describe Thaumastosaurus sulcatus, that differs from these species in having a different dermal sculpture pattern and tooth morphology. We suggest that the auburn colored tooth crown tips in T. sulcatus, as in some other vertebrates, reflect extra hardness for protection against tooth wear. Autochthonous Thaumastosaurus species in southern England support the concept that southern England and southwestern France were distinct faunal provinces in the Late Eocene.

15

Spontaneous heterosis in larval life-history traits of hemiclonal water frog hybrids

75%

Gutmann E., Hotz H., Semlitsch R. D., Guex G. D., Beerli P., Berger L., Uzzell T.

Zoologica Poloniae

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1994

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tom 39

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nr 3-4

16

Sulfurtransferase activity and sulfur compound content in Rana temporaria brain following hibernation

75%

Wrobel M.

Acta Neurobiologiae Experimentalis

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2001

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tom 61

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nr 1

17

Electrophysiological effect of ruthenium red and pH on the skin of the edible frog, Rana esculenta L.

75%

Kosik-Bogacka D. I., Tyrakowski T.

Folia Biologica

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2001

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tom 49

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nr 3-4

18

Population structure of water frogs in a floodplain of the River Danube [Szigetkoz] in Hungary

75%

Gubanyi A., Creemers R.

Zoologica Poloniae

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1994

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tom 39

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nr 3-4

19

Effect of capsaicin and dimethyl sulphoxide [DMSO] on ion transport in isolated skin of frog [Rana esculenta L.]

75%

Kosik- Bogacka D. I., Tyrakowski T.

Folia Biologica

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2003

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tom 51

|

nr 1-2

20

Inheritance patterns of water frog males from the environments of Nature Reserve Steckby, Germany

75%

Berger L., Gunther R.

Zoologica Poloniae

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1991-1992

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tom 37

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nr 1-4

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