| regional studies of brain serotonin and norepinephrine in the hibernating, awakening or active european hamster, cricetus cricetus, during winter. | | 1977 | 20276 |
| comparative studies on sindbis virus strains isolated in slovakia. | two variants of sindbis virus strains were distinguished according to the dextran sulphate (ds) marker. large-plague strains freshly isolated from cricetus cricetus and rana ridibunda produced exclusively small plaques after ds treatment. the prototype sindbis virus strain produced both large and small plaques after ds treatment. kinetic haemagglutination-inhibition tests revealed a higher reactivity of freshly isolated strains than of the prototype strain. for differentiation of newly isolated ... | 1978 | 26202 |
| studies on sex chromosomes of four hamster species: cricetus cricetus, cricetulus griseus, mesocricetus auratus, and phodopus sungorus. | in this paper, we present an analysis of the sex chromosomes of four hamster species after application of different staining techniques. the mitotic x chromosomes show a striking similarity in g-banding pattern but rather great differences in their c-banding patterns. a presumably homologous euchromatic segment that exhibits two distinct g-bands appears in the x chromosome of each species. the y chromosome of cricetus cricetus is in contrast to those of the other species, because it reveals a re ... | 1977 | 67011 |
| early x-ray detection of colonic and rectal tumours in european hamsters. | three groups of european hamster (eh) (cricetus cricetus l.) were treated subcutaneously every two weeks for life with 1/10 or 1/20 ld50 dmh, while two other groups served as controls. twelve weeks after commencement of treatment, radiological examinations of the colon and rectum were begun. the double contrast method was used. in this way it was possible to detect the earliest neoplastic alteration to take place in the above sites. this occurred in the 26th treatment week and was diagnosed as a ... | 1976 | 138278 |
| [modification of the deep pineal after ablation of the superficial epiphysis in the golden hamster]. | in various species (among rodents: mesocricetus auratus, cricetus cricetus, mus musculus, meriones libycus, m. shawi et m. crassus; among cheiroptera: artibeus jamaicensis etc), the pineal complex is formed by two different portions one superficial situated under the cerebral dura and one deep portion situated between the habenular and posterior commissures. superficial and deep portions are separated by a tractus of fibers and some pineal cells. superficial epiphysectomy in the mesocricetus aur ... | 1979 | 160816 |
| clinical, epidemiological and therapeutical experience with human tularaemia: the role of hamster hunters. | fifty patients suffering from tularaemia were treated in our department. the most frequent occupation of the tularaemia patients was hamster hunter. the most important source of the tularaemic infection (90%) was the hamster (cricetus cricetus). we observed the cutano-glandular form in 90% of the patients and internal tularaemia in 10%. the antibiotics used (streptomycin i. m., oxytetracycline and doxycycline per os) were effective. | 1979 | 437894 |
| bronchoscopy in the european hamster (cricetus cricetus). | a pediatric bronchoscope was modified for use in the european hamster (cricetus cricetus) and has been used successfully to obtain biopsy specimens from these animals. biopsy specimens were obtained by means of small forceps with visual control given by the modified bronchoscope. | 1979 | 439853 |
| anatomy of the nasal cavity of the european hamster (cricetus cricetus). | | 1979 | 549379 |
| biological values of the european hamster (cricetus cricetus). | | 1977 | 592718 |
| studies of the ovaries of hibernating and non-hibernating european hamsters (cricetus cricetus). | | 1977 | 612081 |
| the carcinogenic effect of dimethylnitrosamine in laboratory bred european hamsters (cricetus cricetus). | the carcinogenic effect of dimethylnitrosamine (dmn) s.c. injected at two different dose levels was studied in laboratory bred european hamsters (eh) and data compared to findings for captured eh. malignant haemangioendotheliomas of the liver and kidney, hepatocellular carcinomas and cholangiocarcinomas were induced. in contrast to the results obtained with wild eh, a large number of the laboratory bred females additionally developed ovarian granulosa cell tumors. | 1978 | 624110 |
| [tularémia epidemic in humans in the region of east slovakia in 1972--connection with hamster (cricetus cricetus l.) overmultiplication (author's transl)]. | | 1978 | 630568 |
| the fine structure of ependyma in the hypothalamus of the hamster (cricetus cricetus). | the ciliated ependyma of the hypothalamus of the hanster (cricetus cricetus) consists of a sheet of cells, the luminal surface of which is reflected over cilia and numerous microvilli. the lateral portions of the plasmalemma of contiguous cells are fused at some sites to from junctions of five layers, the zonula occludens. these fusions occur usually in continuity with other intercellular junctions, the zonula adhaerens. in the apical regions of the ependyma these fusions are almost spiralled. t ... | 1978 | 697048 |
| tumors of the heart and stomach induced in european hamsters by intravenous administration of n-methyl-n-nitrosourea. | one hundred twenty captured european hamsters (cricetus cricetus l.) were inoculated iv with 1/5, 1/10, or 1/20 the median lethal dose of n-methyl-n-nitrosourea (mnu) once weekly for 18 weeks. mnu induced mainly sarcomas in the heart and squamous cell carcinomas and sarcomas in the stomach. the highest incidence of such tumors was demonstrated by the lowest-dosage group. they were more frequent in males than in females. the effect of mnu was also localized at the site of administration and resul ... | 1977 | 864748 |
| [experimental carcinogenesis in the respiratory tract using the european field hamster (cricetus cricetus l.) as a model]. | subcutaneous treatment of european hamsters with aliphatic (diethyl-, diisopropanol-,dibutylnitrosamine) and cyclic nitroso compounds (nitrosopiperidine, morpholine, and heptamethyleneimine) led to the development of respiratory tract tumors. most of the neoplasms were seen in the nasal cavity and lungs, although tumors were also found in the larynx and trachea. histologically, the tumors were diagnosed as papillary polyps, papillomas, adenomas, adenocarcinomas, squamous cell carcinomas and mixe ... | 1977 | 914221 |
| [effects of temperature and light variations, and of radiothyroidectomy on body weight regulation in the european hamster (cricetus cricetus) (author's transl)]. | regain of body weight in european hamsters after fasting was investigated at various periods of the year and under different ambient conditions (fig. 1) with and without radiothyroidectomy. 1. weight gain after food deprivation proceeds at rates which vary with the season. it is faster in spring and summer than in winter. 2. variations in ambient temperature and in light conditions do not influence the daily weight gain and the relative rate of weight increase (fig. 2,3). 3. radiothroidectomy de ... | 1976 | 1011174 |
| differences in blood values depending on age in laboratory-bred european hampsters (cricetus cricetus l.). | no significant differences in blood parameters were found between males and females aged 13-900 days. a comparison of the various age groups showed significant differences in the number of erythrocytes, leucocytes, thrombocytes and in the diameter of red blood cells. the number of erythrocytes and leucocytes was lowest, and the erythrocytes had the largest diameteres in young animals. the number of thrombocytes was lowest in older animals. | 1975 | 1117694 |
| comparative studies of blood from hibernating and nonhibernating european hamsters (cricetus cricetus l). | the blood of 6 male and 6 female european hamsters (cricetus cricetus l) was examined in summer, in winter before hibernation, and 1 da after awaking from hibernation. blood was drawn from a sublingual vein under ether anesthesia in nonhibernating animals. no influence of hibernation upon the number of erythrocytes and the differentials was found, whereas the number of thrombocytes and leukocytes were reduced to a minimum. from the unchanged numbers of thrombocytes and leukocytes in nonhibernati ... | 1975 | 1134037 |
| [effect of brain stem lesions on hibernation of the hamster (cricetus cricetus l.)]. | small lesions in the brain stem (including the hypothalamus) of the european hamster were effective with respect to food intake, hibernatory disposition and thermogenic power (oxygen consumption) as well. hyperphagia was accompanied by depression of hibernation mostly. moreover, hibernation was hindered by impairment of the thermogenic capacity. entrance into hibernation depended on the integrity of the middle and caudal hypothalamic areas and the rostral portions of the pons and midbrain. hyper ... | 1975 | 1199640 |
| [cardiovascular reflex-reactions on the blood volume changes before and after pharmacological elimination of the efferent heart innervation]. | reflex changes in the heart frequency, blood pressure and respiratory frequency induced by slow changes of the blood volume are observed in the aesthetized european hamster (cricetus cricetus l.). tachycardia, hypertension and hyperpnoe occured during intravenous infusion and bradycardia, hypotension and respiratory inhibition during hemorrhages or local distensions of the junction between the superior vena cava and the right atrium. various receptor organs of the heart and the great vessels and ... | 1975 | 1221737 |
| [new data on the genetic structure of dimorphic populations of the common hamster (cricetus cricetus l.)]. | long-term (1965-1974) mendelian crossbreedings of two coloured forms (black and red) of cricetus cricetus, carried out by the author, have shown that dominant melanistic mutation exists in a homozygous state. thus, it is proved experimentally that natural population of c. cricetus consisting of black and red individuals is a dimorphous one by the phenotype and a polymorphous one by the genotype. the structure of the population includes the black homozygotes (genotype aa), black heterozygotes (ge ... | 1975 | 1228058 |
| a comparative analysis of the karyotypes of cricetus cricetus and cricetulus griseus. | this study presents a comparison of the mitotic chromosomes of the two species of hamsters cricetus cricetus (european hamster) and cricetulus griseus (chinese hamster), which have the same chromosome number of 2n=22.--g-banding procedure reveals striking similarities in both karyotypes and gives the possibility to analyse structural changes so that two examples for robertsonian rearrangement can be observed.--a remarkable kind of difference between the two karyotypes becomes obvious after c-ban ... | 1976 | 1269344 |
| expression of myosin heavy and light chains and phosphorylation of the phosphorylatable myosin light chain in the heart ventricle of the european hamster during hibernation and in summer. | we investigated the expression of myosin subunits (myosin heavy chains) as well as light chains and the in vivo phosphorylation of the phosphorylatable myosin light chain in the heart ventricle of the adult male european hamster (cricetus cricetus l.). two myosin heavy chain isoenzymes could be detected under native and denaturing electrophoretic conditions having high (alpha-myosin heavy chain) and low (beta-myosin heavy chain) enzymatic activity. enzymatic activity of alpha- and beta-myosin he ... | 1992 | 1313440 |
| endogenous, photoperiodic and hormonal control of the body weight rhythm in the female european hamster, cricetus cricetus. | 1. body weight and hibernation rhythms were followed on normal and castrated female european hamsters raised in different conditions of photoperiod and ambient temperature. 2. in the normal females, the photoperiod was more effective than the ambient temperature regarding the control of the body weight rhythm. 3. in the castrated females, testosterone was more effective than oestradiol in suppressing both body weight and hibernation rhythms. 4. in short photoperiod conditions, the existence of e ... | 1992 | 1348675 |
| seasonal variations in the daily rhythm of pineal gland and/or circulating melatonin and 5-methoxytryptophol concentrations in the european hamster, cricetus cricetus. | day-night variations in pineal and/or circulating melatonin and 5-methoxytryptophol (5-ml) concentrations were measured monthly throughout the year in female european hamsters, cricetus cricetus, maintained under natural conditions. pronounced seasonal variations in the day-night rhythm of both melatonin and 5-ml were observed. as previously reported for melatonin, the daily rhythm of both methoxyindoles disappeared in spring and early summer, while a clear day-night rhythm occurred in autumn, w ... | 1992 | 1601273 |
| day and nighttime concentrations of 5-methoxytryptophol and melatonin in the retina and pineal gland from different classes of vertebrates. | 5-methoxytryptophol (ml) and melatonin concentrations were determined by radioimmunoassay in the retinae and pineal glands of frogs (rana esculenta), chickens (gallus domesticus), quails (coturnix coturnix), and european hamsters (cricetus cricetus), killed in the afternoon (1500-1700 hr) and around midnight (2400-0200 hr). ml was only detectable in significant amounts in the frog retina. in the pineal gland ml levels showed the opposite profile to retinal ml, with measurable levels in the chick ... | 1991 | 1808021 |
| the modulation of the calcium transport by skeletal muscle sarcoplasmic reticulum in the hibernating european hamster. | calcium transport of skeletal muscle sarcoplasmic reticulum was comparatively studied in hibernating and summer active european hamsters (cricetus cricetus l.). crude homogenates from psoas, soleus and mixed skeletal muscles were used. protein yield was strongly reduced in the muscle homogenates of hibernating hamsters. the calcium concentration in the muscle of hibernating hamsters was increased to a much higher content than in the serum. in the same animals the maximal rate of calcium uptake a ... | 1991 | 1840124 |
| seasonal change in the temporal organization of wheel-running activity of the european hamster, cricetus cricetus. | | 1991 | 1961252 |
| seasonal changes in vasopressin in the brain of the garden dormouse (eliomys quercinus l.). | the distribution of vasopressin in the brain of the garden dormouse (eliomys quercinus l.) was examined by immunocytochemistry at different times of the year. in spring-summer, sexual dimorphism in the density of vasopressin labeling was observed in several areas of the brain. in these regions, such as the lateral septum and the nucleus of the vertical limb of the diagonal band of broca, male garden dormice showed more vasopressin immunoreactivity than their female counterparts. in autumn-winter ... | 1990 | 2324321 |
| melatonin, serotonin, 5-hydroxyindole-3-acetic acid and n-acetyltransferase in the pineal of the european hamster (cricetus cricetus) kept under natural environmental conditions: lack of a day/night rhythm in melatonin formation in spring and early summer. | in female european hamsters killed in spring and early summer, pineal melatonin content exhibited no day/night rhythm. absolute levels measured were relatively low, being on the order of daytime levels detected in other hamster species. an absence of day/night changes in the activity of n-acetyltransferase was also observed. however, a marked rhythm in pineal serotonin (5-ht) was found, an abrupt large increase being observed at the beginning of the light period. the day/night rhythm of pineal 5 ... | 1989 | 2468756 |
| spontaneous tumours of the european hamster (cricetus cricetus l.). | the incidence and spectrum of spontaneously occurring neoplasms was evaluated in 285 european hamsters (strain mhh:eph) ranging in age between 1 and 5 years. the mean lifespan of the 107 male and 135 female hamsters examined amounted to 122 and 135 weeks, respectively. the overall incidence of tumour-bearing animals was 51.2% (males: 57.9%, females: 47.2%). malignant tumours were more frequent than benign neoplasms and affected more males than females. neoplasms of the haematopoietic/lymphoretic ... | 1989 | 2756800 |
| central vasopressin infusion prevents hibernation in the european hamster (cricetus cricetus). | the amount of immunocytochemically detectable vasopressin in the brain of the european hamster (cricetus cricetus) shows a seasonal variation; i.e., dense vasopressin immunoreactivity is present in the lateral septum during summer but is absent in autumn and winter [buijs, r. m., pévet, p., masson-pévet, m., pool, c. w., de vries, g. j., canguilhem, b. & vivien-roels, b. (1986) brain res. 371, 193-196]. in the winter period the european hamster hibernates. since vasopressin in the lateral septum ... | 1989 | 2762331 |
| characterization of some previously unclassified pasteurellaceae isolated from hamsters. | bacteria isolated from purulent processes on the jaws of european hamsters (cricetus cricetus) and from intestinal inflammatory processes in syrian hamsters (mesocricetus auratus), bred as laboratory animals have been shown to be phenotypically similar but not identical with pasteurella pneumotropica. deoxyribonucleic acid (dna)-dna hybridization studies indicate that with one exception, the strains represent two new species of the family pasteurellaceae. in the absence of a close genomic relate ... | 1989 | 2808184 |
| adaptation of intestinal enzymes to seasonal and dietary changes in a hibernator: the european hamster (cricetus cricetus). | effects of diet, hibernation and seasonal variations on hydrolase activities were determined in mucosa and purified brush border membranes of the small intestine of european hamsters. wild hamsters captured in april and fed for several weeks with an equilibrated laboratory chow (20% protein, 50% carbohydrates) exhibited a rise in disaccharidase activities (sucrase, isomaltase, lactase) but no changes in aminopeptidase n activity. during deep hibernation, in contrast to sucrase and isomaltase act ... | 1988 | 3170822 |
| influence of photoperiod and gonadal steroids on hibernation in the european hamster. | torpor was monitored daily in adult male and female european hamsters (cricetus cricetus) induced to hibernate by exposure to a cold environment (6 degrees c). the effect of photoperiodic manipulations or administration of exogenous gonadal steroids was examined in gonadectomized or intact hamsters. 1. gonadal regression occurred in all short day, but only in some long day, cold-exposed hamsters. entry into hibernation was not observed until reproductive regression had occurred. thus, gonadal at ... | 1988 | 3184005 |
| photoperiodic regulation of body mass, food intake, hibernation, and reproduction in intact and castrated male european hamsters, cricetus cricetus. | a group of sexually active male european hamsters were raised either in short-photoperiod conditions (sp; ld 8:16) or in long-photoperiod conditions (lp; ld 16:8) from their capture at the end of the hibernation period. another group of hamsters was castrated in april and gonadectomized animals were maintained in sp and cold (7 degrees c) or in a succession of sp and lp plus cold. another group, castrated in may or in september and raised in lp conditions, was transferred in september to sp cond ... | 1988 | 3184012 |
| time-course of blood acid-base state during arousal from hibernation in the european hamster. | 1. arterial blood was sampled at 15 min-intervals in european hamsters cricetus cricetus fitted with indwelling catheters, from deep hibernation to full arousal. temperature-corrected ph and pco2, respectively ph* and p*co2, were directly measured at 37 degrees c. 2. deep hibernation corresponded to a respiratory acidosis: ph* = 7.01 +/- 0.01 (mean +/- se), p*co2 = 160 +/- 4 torr (n = 9 animals). 3. three periods could be distinguished in the arousal: (i) a period of hyperventilation (28 +/- 5 m ... | 1988 | 3220992 |
| inclusion bodies in subpial astrocytes of hamster cerebellum (cricetus cricetus). ultrastructural study. | | 1988 | 3418117 |
| pinealectomy and constant release of melatonin or 5-methoxytryptamine induce testicular atrophy in the european hamster (cricetus cricetus, l.). | the role of the pineal and of photoperiod in the regulation of gonadal activity has been studied in the european hamster, a wild hamster commonly found in the vicinity of strasbourg, france. besides the presence of a probable endogenous circannual rhythm in reproductive capacities, it appears that, as in all other hamster species studied to date, the sexual activity of this animal is directly regulated by changes in the photoperiodic environment. pinealectomy as well as a constant release of mel ... | 1987 | 3470503 |
| effect of pinealectomy and a constant high level of circulating melatonin or of 5-methoxytryptamine on the vasopressinergic innervation in the brain of the european hamster (cricetus cricetus, l). | in the european hamster (cricetus cricetus,l.) pinealectomy as well as a constant high level of either circulating melatonin or 5-methoxytryptamine induced marked changes in the immunocytochemically demonstrable central vasopressinergic innervation. when compared to control animals, a drastic decrease of avp-immunoreaction was observed in the diagonal band of broca, the lateral septum, the medial amygdala and the ventral hypothalamus. the results obtained suggest that part of the central vasopre ... | 1987 | 3479518 |
| [cemento-fibrous dysplasia in the periodontium of the incisors of the european common hamster (cricetus cricetus l.)]. | | 1986 | 3482021 |
| [effect of artificial magnetic fields on the recessus suprapinealis of the hamster, cricetus cricetus. i. ultrastructural investigations]. | | 1986 | 3590936 |
| to the knowledge of the common hamster (cricetus cricetus linné, 1758; rodentia) as host of leptospirosis in czechoslovakia. | a total of 1288 hamsters (cricetus cricetus), coming from two regions of czechoslovakia, were serologically investigated on the presence of leptospirosis. in 1114 hamsters from eastern slovakia, where an outbreak occurred and local populations lived quite atypically, there was 31.8% positivity, in 174 animals from central moravia, where the populations were at higher levels but lived normally, the positivity amounted to 17.2%. the serological positivity increases proportionately to the weight, i ... | 1987 | 3596398 |
| spontaneous pathology of the european hamster (cricetus cricetus). malocclusion, dysplastic and inflammatory processes on the jaws. | | 1987 | 3617970 |
| fluorescence anisotropy of kidney lipids and membranes of a hibernating mammal. | the fluorescence anisotropy of lipids and membranes isolated from kidneys of european hamsters (cricetus cricetus l.) has been estimated using 1,6-diphenyl-1,3,5-hexatriene as a probe. we have compared in this study the results obtained for two critical periods for a hibernator: winter (torpid state), and summer (active state). the differences were of very low magnitude. a slight increase in anisotropy was noticed in the kidney lipids and microsomal membrane preparations from torpid animals. in ... | 1986 | 3698645 |
| seasonal variation in vasopressin innervation in the brain of the european hamster (cricetus cricetus). | using immunocytochemistry, vasopressin innervation was determined in the brain of the european hamster (cricetus cricetus) during different seasons. it was found that the spring period coincides with a dense vasopressin innervation in many brain regions in the male hamster, and lower vasopressin fibre density in some brain regions in the female hamster. in autumn just before hibernation an almost complete disappearance of vasopressin innervation is noted in those brain regions that are sexually ... | 1986 | 3708343 |
| [initial observation in italy of episodes of mange caused by notoedres muris (megnin, 1877) in cricetus cricetus]. | | 1986 | 3752808 |
| circannual variations of gaba content in cytosolic and crude synaptosomal fractions in some brain areas of the european hamster. | in the european hamster, cricetus cricetus, a common hibernator, over a year, the gamma-aminobutyric acid (gaba) content has been followed, in the cytosolic and crude synaptosomal fractions of the olfactory bulbs, hypothalamus and cerebellum. in these 3 areas, the gaba content shows circannual variations of endogenous origin: in this period, in both fractions two peaks can be observed, at the beginning of spring and in autumn. these circannual variations do not follow the circannual variation of ... | 1985 | 4041861 |
| [ultrastructure of the parafollicular cells of the wild hamster (cricetus cricetus)]. | | 1967 | 4169213 |
| [histological studies on the secretory activity of submandibular gland in the field hamster (cricetus cricetus l.) during the summer activity period and during hibernation]. | | 1968 | 4174987 |
| [demonstration of gap junctions or nexus by lanthanum in the brown fat of the european hamster (cricetus cricetus)]. | | 1974 | 4211377 |
| [determination of possible corticosteroids in the brown fat of the european hamster (cricetus cricetus). identification of compounds isolated by gas chromatography and mass spectrum analysis]. | | 1973 | 4211385 |
| [influence of the outside temperature on the elimination of urinary catecholamines in hamsters (cricetus cricetus)]. | | 1966 | 4224550 |
| [suppression of hibernation and modification of thermoregulation by hypothalamic lesions in the european hamster, cricetus cricetus]. | | 1966 | 4225216 |
| [seasonal cycle of urinary elimination of aldosterone in a hibernant, cricetus cricetus. influence of temperature]. | | 1966 | 4225217 |
| [seasonal variations of sodium and potassium excretion in the european hamster (cricetus cricetus)]. | | 1967 | 4234196 |
| [seasonal development of calcium balance in a hibernant, the european hamster (cricetus cricetus)]. | | 1969 | 4238657 |
| [circadian rhythm of thermogenesis in the waking and active european hamster (cricetus cricetus) at the end of summer]. | | 1970 | 4250424 |
| [effects of radiothyroidectomy and to thyroid hormone injections on the beginning of hibernation of the european hamster (cricetus cricetus)]. | | 1970 | 4252377 |
| the carcinogenic effects of dimethylnitrosamine and nitrosomethylurea in european hamsters (cricetus cricetus l.). | | 1974 | 4369271 |
| carcinogenic effect of dibutylnitrosamine in european hamsters (cricetus cricetus). | | 1974 | 4412319 |
| [natural latent infection of the european hamster ("cricetus cricetus", linné) with a papovavirus. i. isolation of virus in golden hamster and new-born mice (author's transl)]. | | 1974 | 4425201 |
| bronchographic studies of the european hamster (cricetus cricetus l.), the syrian golden hamster (mesocricetus auratus w.) and the chinese hamster (cricetulus griseus m.). | | 1974 | 4446850 |
| [effects of photoperiod and ambient temperature on circannual rhythms of body weight and adrenal cortex activity in european hamster (cricetus cricetus)]. | | 1974 | 4469775 |
| [role of the thyroid and gonads in determination of the annual weight cycle of the european hamster (cricetus cricetus)]. | | 1974 | 4470407 |
| [attempted identification, by means of radioactive precursors, of a steroid type compound synthetized and excreted by the brown fat of the european hamster (cricetus cricetus)]. | | 1972 | 4654467 |
| energy requirement and coefficient of utilization of food in the common hamster and water rat. | | 1972 | 4668839 |
| [role of thyroxine in the initiation of hibernation and resistance to cold in eureopean hamsters (cricetus cricetus) thyroidectomized in spring]. | | 1972 | 4675632 |
| comparative histometric investigations of the testicular function of european hamsters (cricetus cricetus) with and without hibernation. | | 1973 | 4725608 |
| a study of golden hamster (cricetus cricetus) alkaline phosphatase isoenzymes. | | 1973 | 4747103 |
| demonstration of nitrosamine-induced tumours in the respiratory tract of the european hamster (cricetus cricetus l.) by x-ray examination. | | 1973 | 4761819 |
| comparative studies of organs in the european hamster (cricetus cricetus l.), the syrian golden hamster (mesocricetus auratus w.) and the chinese hamster (cricetulus griseus m.). | | 1973 | 4779674 |
| [circannual weight rhythm of the european hamster (cricetus cricetus). respective influence of the photoperiod and external temperature during its course]. | | 1973 | 4780670 |
| [ the european hamster (cricetus cricetus) as a new experimental host of schistosoma mansoni. study of the effects of hibernation]. | | 1973 | 4801916 |
| anatomical investigations of the cranium of the european hamster (cricetus cricetus l.) with particular consideration to the nasal and paranasal cavities. | | 1974 | 4824479 |
| the european hamster (cricetus cricetus l.) as an experimental animal: breeding methods and observations of their behaviour in the laboratory. | | 1974 | 4824484 |
| carcinogenic effects of n-nitrosomorpholine and n-nitrosopiperidine on european hamster (cricetus cricetus). | | 1974 | 4835109 |
| [seasonal development in the excretion of adrenal hormones in a hibernating animal, cricetus cricetus]. | | 1967 | 4862626 |
| does brown adipose tissue of the european hamster (cricetus cricetus) store and synthetesize corticosteroids? the isolation of a corticosteroid-like compound. | | 1972 | 5085218 |
| [study of urinary elimination of catecholamines in the thyroidectomized european hamster (cricetus cricetus) during chronic or brief exposure to cold]. | | 1971 | 5155689 |
| [taxonomy and distribution of the eurasian common hamster (cricetus c. cricetus l., 1758) in slovakia]. | | 1969 | 5393221 |
| [elimination of urinary corticosteroids by european hamster (cricetus cricetus) adrenalectomized and bearing an intratesticular adrenal homograft]. | | 1968 | 5734909 |
| [synthesis of steroids beginning with na-1-14c acetate by wild hamster (cricetus cricetus l.) adrenal cortex and brown fat in organ culture]. | | 1968 | 5753780 |
| [hypothalamic control of thermoregulation and of hibernation in the european hamster cricetus cricetus]. | | 1969 | 5800001 |
| [thermoregulation in ambiant heat of a hibernant, the european hamster (cricetus cricetus). comparison with the white rat]. | | 1969 | 5806365 |
| [experimental infection of the hamster (cricetus cricetus) per os by the vegetative form and the cystic form of toxoplasma gondii]. | | 1965 | 5840745 |
| [effect of temperature on the degree of hydration and na and k content of sections of rat and hamster renal cortex slices. (cricetus cricetus)]. | | 1965 | 5856244 |
| [dna replication pattern of somatic chromosomes of cricetus cricetus (l)]. | | 1966 | 6012391 |
| skin tumor formation in the european hamster (cricetus cricetus l.) after topical initiation with 7,12-dimethylbenz[a]anthracene (dmba) and promotion with 12-o-tetradecanoylphorbol-13-acetate (tpa). | initiation with the carcinogen 7,12-dimethylbenz[a]anthracene followed by promotion with the hyperplasiogenic phorbol ester 12-o-tetradecanoylphorbol-13-acetate carried out on the dorsal skin of european hamsters (cricetus cricetus l.) led to the formation of a broad spectrum of skin tumors in terms of a two-stage principle. tumor formation involved the epidermis and its appendages, the connective tissue, and the vascular and pigmentary system. with regard to the sensitivity to initiation with d ... | 1984 | 6423310 |
| [rabies in the common hamster (cricetus cricetus) in slovakia]. | the trials were conducted within the full-scale research on the ecology of lyssa virus. in a period of the mass outbreak of common hamster population in the east slovakian region, 283 hamsters were examined for rabies. using the direct immunofluorescence method (difm), the rabies antigen was detected in the brain of five hamsters. three virus strains (denoted as 3 o, 7 e, 9 e) were isolated by means of the inoculation test on sucking mice. on the basis of the detection of the nucleo-protein anti ... | 1984 | 6441329 |
| fluorescence polarization study of lipids and membranes prepared from brain hemispheres of a hibernating mammal. | the physical behavior of total lipids, microsomes and microsomal lipids prepared from brain hemispheres of european hamsters (cricetus cricetus) was approached by the measure of the fluorescence polarization of the probe 1,6-diphenyl 1,3,5-hexatriene. we compare in this study the results obtained for two critical periods for a hibernator: winter (torpid state) and summer (active state). an increase in fluidity was noticed in the winter lipid and membrane preparations. the difference was however ... | 1984 | 6704130 |
| [pathogenesis of experimental rabies infection in foxes and cats infected with viruses isolated from hamsters (cricetus cricetus)]. | all the infected foxes (9) contracted the disease and died from rabies the 20th-21st day from infection with the virus isolated from hamster. out of the total number of 9 cats experimentally infected by intramuscular infection, seven showed symptoms of clinical disease on the 18th-34th day from infection. the infected dogs, wolves and rabbits did not show clinical disease. in the post mortem examination of eight foxes the rabies virus or rabies antigen was detected in all parts of the cns and in ... | 1981 | 6791357 |
| [distribution of rabies antigen in the central nervous system of rats and mice experimentally infected with rabies strains isolated from hamsters (cricetus cricetus)]. | the comparative experiments were carried out to study the distribution of the rabies antigen in the central nervous system (cns) of sewer-rats and mice experimentally infected with three "hamster" strains (for comparison also with "fox" strain 1151); it was found out that with microscopical observation of preparations stained by the method of direct immunofluorescence the "hamster" strains produced a blended picture of fluorescing particles characteristic of strains with a reduced virulence and ... | 1981 | 6791359 |
| changes in lipid composition of the brain cellular membranes of an hibernating mammal during its circannual rhythm. | the lipid composition of whole brain hemispheres and subcellular fractions of european hamsters (cricetus cricetus) was investigated at four different periods of the year. 1. no difference was observed in winter between hibernating animals and active animals awake for 24 hr. 2. a slight increase of cholesterol/phospholipid molar ratio was observed in winter. 3. a slight increase of the ratio ethanolamine phosphoglycerides/choline phosphoglycerides was observed in summer and autumn. 4. some chang ... | 1982 | 7067403 |
| [isolation of rabies virus from common hamster (cricetus cricetus) in czechoslovakia]. | | 1980 | 7246383 |
| effects of bulbectomy on hibernation, food intake and body weight in the european hamster, cricetus cricetus. | | 1980 | 7403287 |
| the fine structure of the exocrine pancreas of the european hamster (cricetus cricetus l.): electron microscopic investigations. | | 1980 | 7405424 |
| the neuroendocrine system in hibernating mammals: present knowledge and open questions. | the present review describes the distribution and the function-dependent reactivity pattern of those peptidergic and aminergic components of the neuroendocrine system of hibernating mammals that have been studied by histological, pharmacological and physiological techniques. particular attention has been paid to the intrinsic connectivity of the peptidergic apparatus and its input systems. since the reactivity patterns of the neuroendocrine system show remarkable fluctuations in relation to the ... | 1995 | 7553762 |
| seasonal and daily rhythms of body temperature in the european hamster (cricetus cricetus) under semi-natural conditions. | body temperature of five european hamsters exposed to semi-natural environmental conditions at 47 degrees n in southern germany was recorded over a 1.5-year period using intraperitoneal temperature-sensitive radio transmitters. the animals showed pronounced seasonal changes in body weight and reproductive status. euthermic body temperature changed significantly throughout the year reaching its maximum of 37.9 +/- 0.2 degrees c in april and its minimum of 36.1 +/- 0.4 degrees c in december. betwe ... | 1995 | 7665733 |
| characterization of two metabacterium sp. from the gut of rodents. 1. morphology and histochemical examination of a new metabacterium sp. from the gut of the european hamster (cricetus cricetus) | a new giant gram-negative non-cultivatable symbiotic endospore-forming bacterium was found in the gut of the european hamster. this "metabacterium" sp., provisionally named "metabacterium criceti", sp. n., has a length of approximately 20 microns and thickness of 4 microns. it forms 1 to 2 cylindrical endospores, approximately 9 microns long and 1.4 microns thick. tem-micrographs show a cell wall structure characteristic of gram-negative bacteria. vegetative cells are filled with granules 0.3 mi ... | 1993 | 7690004 |