Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 17

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:  interakcje zywiciel-pasozyt
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
Nowadays the developmental process of parasitism within the nematodes of animals and plants also takes place. Rhabditida group coming from the soil saprophytic forms is an example of such evolutionary process in statu nascendi. The conditions and ways towards the close relationships between two organisms, leading from the commensalism and facultative parasitism to the obligatory one have been presented.
5
75%
The mechanism of intracellular killing of pathogens which involves both oxygen and reactive nitrogen intermediates have been discussed. The attention is focused on inducible nitric oxide synthase which produces NO, a soluble free radical. The role of nitric synthase in the pathogenesis of many parasitic infections has recently been emphasised. The participation of enzymatic and non-enzymatic antioxidants in the pathogenesis of many infections and the role of proteasomes in the process of repair of the oxidetively damaged proteins are also discussed.
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Wplyw metali ciezkich na uklad pasozyt-zywiciel

75%
Now in the time especially intensive development of industry the question of environment pollution became very important. According to review of the problem heavy metals are one of the most hazardous constituents of xenobiotics. Their toxic effects, among other, are manifested directly on the elements of the immune system as well on the modification of the immune response. The influence of heavy metals on the host-parasite system is rather poorly recognized and here we are discused about it, according to literature and own experience. Special attention is paying to their impact on the immune response of infected and treated with lead, cadmium or mercury host and on the parasite. The definitive host eg. fishes and their some parasite can be used as potential accumulation indicators of aquatic environment of heavy metal pollution.
A review of the literature concerning recent investigations on the phagocytosis is presented, special attention being paid to the role of macrophages and granulocytes as effector cells in infection caused by some protozoans and helminths.
9
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Inwazje przywr a uklad obronny slimaka

63%
This is a review article concerning an influence of trematodes infections on a defence system of snails. Changes in: snails' plasma composition, a number of hemocytes, size of a hemo-poietic organ, molecules secreted by hemocytes and defence cells activities caused by the infections are discussed in detail. The differences in humoral and cellular response between susceptible and resistant strains of snails as well as between young and old snails are also presented in the article. Finally, the problem of an existence of the specific immunological memory in snails is analyzed.
This is a review article based on about 100 papers from leading world newspapers. The main features and the way of action of the snail's immune system are described. The mechanisms of discrimination between self and non-self are presented in detail, including characterization of interacting components of host (cellular and humoral factors) and parasite (a sporocyst surface) origin. The phenomena of molecular disguise and molecular mimicry are discussed in the context of the compatibility betweeen a host and a parasite. The possible ways of killing parasite are indicated, with special regard to production of reactive oxygen intermediates by hemocytes during the process of killing.
12
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Uklad Giardia - zywiciel: zmiennosc obrazu inwazji

63%
In man, as well as in many species of vertebrates there exist several populations of Giardia duodenalis group which, though morphologically indistinguishable, show different level of heterogenicity in several characteristics, a. o. in surface antigens, isoenzyme make-up, RFLP, invasiveness for different hosts or pattern of experimental infection. Also the clinical observations in man distinctly suggested that G. intestinalis comprises several different populations. In the course of giardiosis apparent variability in clinical manifestations can be observed. In many patients the infection is symptomless and resolves spontaneously and in some others – variable intensity of symptoms is observed. Most likely both the parasit's characteristics and the host's feature will determine the clinical character of infection. It is well known that in some cases it is the host that responsible for the symptoms of the infection. Thus, for instance, clinical giardiosis links with immunodeficiency, malnutrition or young age. There are also evidences that some Giardia isolates have enhanced potency to provoke the disease of the host. It is considered that the variable pattern of the infection may be related to three different factors in host-parasite relationship: extra- and intrapopulation variability of Giardia isolates, the microenvironmental factors of the host's intestine, and the variable immune response of the host. The author describes data on the two first factors.
13
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Teoria chaosu w parazytologii

63%
The chaos theory in parasitology. Fundamental ideas of the chaotic non-linear dynamical systems and their application in parasitology (e.g. Cephalomyia populations, Trichomonas vaginalis invasions, Homo-Plasmodium systems) are discussed.
Tick research in the Czech Republic started developing rapidly after World War II and was directed to the faunistics and taxonomy, biology, ecology and behaviour, physiology and genetics, disease transmission, host-parasite relationships and control. Altogether 15 tick species were reported from the territory of the Czech Republic. Most studies in biology, ecology and virus transmission were dedicated to Ixodes ricinus, but biology and ecology of Dermacentor reticulatus, I. laguri and I. hexagonus were also studied. Many studies were done on argasid ticks, mostly on pheromonal communication of Argas persicus and immunology of feeding of A. polonicus. Population variability of both these species was also studied. The present research on ticks is mostly directed to study of interaction among hosts, ticks and pathogens on the humoral, cellular and molecular level.
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.