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An investigation of food poisoning cases caused in our country by Salmonella spp has been carried out by the Sanitary and Epidemiological Station, in recent years. It has show that the majority of foci of this disease is related to the consumption of foods containing hen eggs which had not undergone heat treatment, such as mayonnaise, creams, ice cream and other products. The world egg production...
Since serum is a source of hormones, growth factors, cytokines and antioxidants being a survival factor for cell culture its withdrawal from the culture medium induces apoptosis in a variety of cell types. In the present study the effect of FCS - deprivation on Bcl-2 protein level, Bax transcript and apoptosis of L1210 leukaemic cells was examined. The possibility of the existence of cellular origin...
Local counter current transfer of substances between venous and arterial vessels has been found in the perihypophyseal vascular complex after administration into the supraorbital vein. The present experiments investigate whether similar transfer could be found after nasal administration of testosterone. Experiments were conducted on the model of isolated pig's head perfused with autologous blood through...
The broad ligament and .'paraovarian sac tissuek in various areas of the paraovarian lymphatic plexus after administration of carbon particles and latex bieads were examined for absorption from peritoneal and sac cavities in pigs during the estrous cycle. 30 min after the introduction of carbon particles, lymphatic pathways were stained black through all phases of the estrous cycle, however, near...
Severe burn injury is associated with damage of tissues and organs distant to the area of injury. Although different agents are suggested to play an important role in pathogenesis of the burn disease, disturbed balance between the development of reactive oxygen forms and activity of antioxidants can play a pivotal role. Therefore, the aim of our study was to examine the intensity of lipid peroxidation...
Spontaneous infection of horses with Equine Arteritis Virus can occur either through the respiratory or the reproductive system. In case of infection through the reproductive system, the semen of the convalescent stallion is the source of virus and the infection takes place during natural mating or artificial insemination. The main purpose of serological and virological investigations thus is to detect...
This study investigates the effect of superoxide anion radical (02); hydrogen peroxide (H202), nitric oxide (NO) and peroxynitrite (ONOO), which often accompany inflamed, endotoxic or exercised muscle on insulin action in DTsatellite cells. In order to induce quiescence, rat L6 myoblasts were subjected to transition from G2/M to Gl phase by the application of serum-reduced medium. Insulin stimulating...
The aim of the study was to determine the degree of phagocytic activity of neutrophils, lymphocyte histogenesis and total immunoglobulin level in six bitches with glandular cystic hyperplasia - pyometra complex (GCH - PC) before and after ovariohysterectomy in comparison to healthy dogs. Haematological study showed significant increases (P<0.005) in the white blood cell count and neutrophilia....
The first Aujeszky's disease (AD) vaccination - eradication programme in Poland was introduced in two different in size farrow-to-finish farms with a high percentage of latently infected pigs. All the pigs were vaccinated with gE- and TK-negative vaccine Nobi-Porvac Aujeszky Live Begonia (Intervet, Holland) according to the following schedule: breeding stock twice with a 4-week interval and then 3...
Melatonin secretion is not regulated via simple negative feedback inhibition. However some results show that melatonin may influence its own synthesis and secretion as well as other processes in the pineal gland. The present study was undertaken to check the effects of melatonin administered at different times of day on the ultrastructure of pig pinealocytes. The study was performed in summer under...
The study was carried out on three groups of cows kept in the systems: I - indoor and pasture, II - indoor with a run, III - indoor. The experiment lasted one year and involved summer and winter feeding. Contents of vitamin A and E in blood serum were determined. The highest serum levels of vitamin E were determined in animals kept in both indoor + pasture and indoor + run systems. The system of keeping...
The aim of the studies was the use of Haemophilus somnus vaccine in the immunization of chickens to protect them against Salmonella infections by increasing the local cross-immunity of the alimentary tract. Broilers were immunized with a live vaccine administered in drinking water on the 1st and the 14,h day of life. The groups were as follows: H. somnus (24h broth culture, 109 cfu/ml); Salmonella...
This study investigated an influence of oestradiol and progesterone on expression of LH/hCG receptors in the porcine uterine broad ligament. The tissues were obtained from nineteen ovariectomized crossbred gilts. The animals received i.m. injections of 2 ml of corn oil (control; n=4), 25 μg kg-1 of oestradiol benzoate (n=5), 500 μg kg-1 of progesterone (n=5) or 25 μg kg-1 of oestradiol benzoate with...
Single-, double- and triple-labelling immunohistochemistry were applied to study the distribution and neurochemical properties of cholinergic nerve fibres supplying the vas deferens in juvenile and adult pigs. Cholinergic nerves were identified using an antibody against choline acetyltransferase. Immunoblotting was applied to verify the specificity of choline acetyltransferase immunostaining. Western...
This study investigated the influence of active immunisation against Gn-RH on adrenergic innervation of the porcine testis, epididymis and vas deferens. Seven groups of the boars were used including three control groups (n=9) Gl, G2 and G3 consisting of non-immunised animals aged 10,18 and 26 weeks, respectively, and four groups of immunised pigs (7-9 animals in each group). All the experimental boars...
The aim of this study was to determine histotopography and age-related changes of immunoreactive substance P (SP-IR) nerve plexus in dog cornea. In this research corneas of three groups of dogs of different age were used: young (2-3 months), adult (1-3 years) and old (8 and more years). Immunohistochemical demonstration of SP was performed on 40 um serial free-floating corneal sections cut parallel...
The aim of this study was an assessment of the immune response of cats experimentally infected with M. canis and a determination of the extent of immunity acquired after recovery. Studies were carried out on 24 domestic, short-haired cats, aged 3-4 months. The resistance of the animals was assessed by reinfection, and the degree of immune response. It has been found that after recovery from an experimental...
The aim of this study was to determine the influence of unilateral, intraovarian infusions of Escherichia coli endotoxin (LPS, lipopolysaccharide, serotyp 055:B5) on the concentration of progesterone (P4), testosterone (T), estradiol-17ß (E2) and luteinizing hormone (LH) in peripheral and ovarian blood plasma of gilts. The morphology of ovaries was also estimated. Fourteen sexually matured gilts with...
The in vitro effects of iridovirus isolated from catfish on head kidney lymphocyte activity were examined in carp, rainbow trout and sheatfish. Mitogenic proliferative assay was used to demonstrate an immunosuppressive effect of iridovirus on the proliferative response of head kidney lymphocytes stimulated by ConA and LPS. The production of IL-2-like protein by head kidney lymphocytes stimulated by...
Four groups of turkeys were fed mixtures containing fat of different peroxide values, 5, 50, 100 and 150 mEq O2/kg, respectively, for four months; the fat content over successive months was 2, 3, 4 and 5%. Every month blood samples were collected from 12 birds randomly selected from each group. Moreover, six turkeys from each group were slaughtered to collect samples of the liver, breast muscles and...
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