Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 11

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  protozoan
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Response of Acanthamoeba castellanii mitochondria to oxidative stress

100%
Trocha L. K., Stobienia O.
Acta Biochimica Polonica
|
2007
|
tom 54
|
nr 4
797-803
The purpose of this study was to examine the effects of oxidative stress caused by hydroperoxide (H2O2) in the presence of iron ions (Fe2+) on mitochondria of the amoeba Acanthamoeba castellanii. We used isolated mitochondria of A. Castellanii and exposed them to four levels of H2O2 concentration: 0.5, 5, 15, and 25 mM. We measured basic energetics of mitochondria: oxygen consumption in phosphorylation state (state 3) and resting state (state 4), respiratory coefficient rates (RC), ADP/O ratios, membrane potential (ΔΨm), ability to accumulate Ca2+ , and cytochrome crelease. Our results show that the increasing concentrations of H2O2 stimulates respiration in states 3 and 4. The highest concentration of H2O2 caused a 3-fold increase in respiration in state 3 compared to the control. Respiratory coefficients and ADP/O ratios decreased with increasing stress conditions. Membrane potential significantly collapsed with increasing hydroperoxide concentration. The ability to accumulate Ca2+ also decreased with the increasing stress treatment. The lowest stress treatment (0.5 mM H2O2) significantly decreased oxygen consumption in state 3 and 4, RC, and membrane potential. The ADP/O ratio decreased significantly under 5 mM H2O2 treatment, while Ca2+ accumulation rate decreased significantly at 15 mM H2O2. We also observed cytochrome crelease under increasing stress conditions. However, this release was not linear. These results indicate that as low as 0.5 mM H2O2 with Fe2+ damage the basic energetics of mitochondria of the unicellular eukaryotic organism Acanthamoeba castellanii
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The evaluation of Entamoeba gingivalis occurrence in samples from patients with cancer and diabetes

100%
Kolodziej P., Luszczak J., Barczak S., Rzymowska J., Abramek J., Ziaja-Soltys M., Ziobro A., Grzesik D., Bogucka-Kocka A.
Annals of Parasitology
|
2016
|
tom 62
|
nr Suppl.
3

Characterization of the amylolytic properties of the rumen ciliate protozoan Eudiplodinium maggii

100%
Belzecki G., Newbold C. J., McEwan N. R., McIntosh F. M., Michalowski T.
Journal of Animal and Feed Sciences
|
2007
|
tom 16
|
nr 4
590-606
4

First report of Theileria infection of bactrian camels (Camelus bactrianus) in Xinjiang, China

84%
Li Y., Li X., Liu J., Wang J., Jia D., Liu A., He Z., Guan G., Liu Z., Liu G., Luo J., Yin H.
Acta Parasitologica
|
2019
|
tom 64
|
nr 4
5

Changes in the incidence of intestinal giardiosis in Mexican population during five years (2011–2015)

84%
Ibanez-Cervantes G., Leon-Avila G., Bello-Lopez J. M., Perez-Rangal A., Leon-Garcia G., Nogueda-Torres B., Hernandez J. M.
Acta Parasitologica
|
2018
|
tom 63
|
nr 1
6

Parasitic protozoans [Eimeria, Giardia, and Cryptosporidium] in lambs with diarrhoea in the Van province [Turkey]

84%
Ozdal N., Tanritanir P., Goz Y., Deger S., Kozat S.
Bulletin of the Veterinary Institute in Puławy
|
2009
|
tom 53
|
nr 1
47-51
This study was conducted to investigate the prevalence of parasitic protozoan agents in lambs with diarrhoea in the Van province (Eastern Turkey). Faecal samples from 132 diarrhoeic lambs aged from one day to two months old were collected at 12 different herds from January 2005 to May 2005. The faecal samples were examined by using, native-Lugol, Fulleborn's salty water technique, and a Modified Ziehl-Neelsen staining technique for Cryptosporidium. The parasitological examination revealed that 98 (74.24%) of the lambs were infected with one or more of parasitic protozoan agents. Eimeria, Giardia, and Cryptosporidium were detected in 80 (60.60%), 64 (48.48%), and 18 (13.63%) of the lambs, respectively. According to statistical analysis, Eimeria sp. oocysts were significantly higher (P<0.01) in lambs aged between 31 and 60 d (76.81%, 53 of 69) than in those of 16-30 d of age (50%, 21 of 42) and 1-15 d of age (28.57%, 6 of 21). There were significant differences in Giardia prevalance when lambs of 1-15 d of age were compared with those 16-30 d of age (P<0.05). Statistical analysis revealed that Cryptosporidium sp. oocysts were significantly higher (P<0.01) in lambs aged between 1 and 15 d (66.66%, 14 of 21) than in those of 16-30 d of age (4.76%, 2 of 42) and 31-60 d of age (2.89%, 2 of 69). Moreover, Giardia sp. and Eimeria sp. showed significant co-occurrence (34.84%). The results obtained confirmed the fact that protozoan infections are widespread in diarrhoeic lambs in this geographical region.
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The prevalence of Trichomonas vaginalis in the population of the province of Warmia and Mazury

84%
Korycinska J., Dzika E., Wasniewski T.
Annals of Parasitology
|
2016
|
tom 62
|
nr Suppl.
8

Euhyperamoeba fallax Seravin et Goodkov, 1982 (Lobosea, Gymnamoebia) - multinucleate marine limax amoeba - morphology, biological peculiarities and systematic position

84%
Seravin L. N., Goodkov A. V.
Acta Protozoologica
|
1987
|
tom 26
|
nr 4
9

Occurrence of bacteria, protozoans and metazoans in waters from two semi-urbanized areas of Cameroon

84%
Ajeagah G. A.
International Journal of Ecohydrology and Hydrobiology
|
2013
|
tom 13
|
nr 3
10

The intestinal parasites of the selected mammal species, living in zoological gardens and wild animal parks

67%
Bartosik J., Gorski P.
Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego
|
2010
|
tom 06
|
nr 3
11

Prevalence of eugregarines (Apicomplexa: Eugregarinida) parasitizing in ground beetles (Coleoptera, Carabidae) in various habitats

67%
Sienkiewicz P., Lipa J. J.
Polish Journal of Entomology
|
2009
|
tom 78
|
nr 4
Differences in the prevalence of eugregarines parasitisation in epigeic communities of the Carabidae beetles family were studied. Host insects were collected from six sites differing in the level of plant cover and humidity. It was proved that the level to which Carabidae were parasitized by eugregarines was significantly influenced by the plant cover of the land. The Carabidae way of feeding was a less important factor influencing the prevalence. Large size zoophages and hemizoophages were parasitized at higher level than small zoophages.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.