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1

Immunolocalisation of α and β oestrogen receptors in basolateral amygdala of rabbit males

100%
Lonc G.
Bulletin of the Veterinary Institute in Puławy
|
2012
|
tom 56
|
nr 1
Expression of a (ER-α) and ß (ER-ß) oestrogen receptors in neurons of basolateral complex of the amygdala was studied in rabbit males. The examinations were carried out on brains of 12 sexualh mature rabbit males weighing 3-4 kg. An immunohistochemical method (IHC) with priman Er-α antibodies, NCL-L6F11 and Er-ß: NCL-ERbeta clone EMR02 was applied. The percentage of immunoreactive neurons was determined. Morphometric and statistical analysis of immunoreactive (ER+) neurons was carried out including the localisation of IHC reaction within the examined neurons. The main place of IHC-ER-α reaction was the cytoplasm of nervous cells, whereas in the examination of IHC-ER-ß, the reaction was observed mainly within cell nucleus. The nuclei of basolateral complex are a region of relatively high percentage of ER-ß+ neurons and lower percentage of ER-α+ neurons in comparison with other nuclei of the amygdala. Basolateral nucleus was characterised by a higher percentage of ER- ß+ neurons in which the reaction was observed in the cytoplasm.
2

Expression of progesterone receptors in hippocampal neurons in rabbit males

63%
Krakowska I., Lonc G.
Bulletin of the Veterinary Institute in Puławy
|
2012
|
tom 56
|
nr 2
The aim of this study was to investigate the presence of progesterone receptors in hippocampal neurons of male rabbits and the distribution of these receptors in different areas of the hippocampus. The examinations were carried out on brains of five males, New Zealand breed, age of 2 years, weighing 2-3 kg. Immunohistochemical detection of receptors was performed using DAKO LSAB + Kit Peroxidase method. The sections were incubated with priman monoclonal antibody for progesterone receptor NCL-L- PGR-AB. The obtained results have shown the presence of progesterone receptors in neurons of CAI, CA3, and CA4 regions of the hippocampus. The reaction also occurred in the region of granular cells of the dental gyrus. The reaction was seen in the cytoplasm and nuclei of neurons simultaneously, whereas some neurons did not show any reaction in the nucleus and cytoplasm. Occurrence of progesterone receptors in most neurons of the hippocampus confirms a direct influence of progesterone on the hippocampus and its functions in rabbit males.
3

Struktura i topografia jader ciala migdalowatego u samic szynszyli

63%
Lonc G., Krakowska I.
Medycyna Weterynaryjna
|
2009
|
tom 65
|
nr 07
498-502
The aim of this study was to describe the structures and topography of the nuclei of the amygdaloid complex in chinchillas. The material for the study consisted of five chinchilla brains. The brains were fixed in formalin, dehydrated in ethyl alcohol and embedded in paraffin blocks. Next, the blocks were cut in the transversal plane into 12 µm-thick slices. The slices were coloured according to Klüver and Barrer's method and examined under a light microscope (OLYMPUS BX 40) equipped with the camera Color View IIIu Soft Imaging System. For the morphometric measurements, the program Cell^D Soft Imaging System (SIS) was used. One can distinguish three parts of the amygdala: corticomedial amygdaloid complex (CMC), basolateral complex (BLC) and other amygdaloid areas.( OA). The BLC is divided into three nuclei: lateral amygdaloid nucleus (LA), basolateral amygdaloid nucleus (BL) and basomedial amygdaloid nucleus (BM). The chinchilla's lateral amygdale (LA) is well developed and situated above the BL; laterally, it is bordered by the external capsule; the caudal pole of this nucleus constitutes at the same time the caudal pole of the amygdaloid complex. The basolateral amygdaloid nucleus in chinchillas is situated between the LA and BM. The basomedial amygdaloid nucleus is located ventromedially to the BM and dorsally to the cortical nucleus (CO). The corticomedial amygdaloid complex consists of the following: cortical nucleus (CO), medial nucleus (Me), central nucleus (CE), amygdalohippocampal area (AHA), the nucleus of the lateral olfactory tract (NLOT) and bed nucleus of the olfactory tract (BOAT). The nucleus of the lateral olfactory tract in chinchillas begins at the rostral part of the amygdala. It is bordered medially and dorsally by the anterior amygdaloid area (AAA) and laterally by the anterior part of the cortical nucleus. The chinchilla's bed nucleus of the olfactory tract is situated behind the NLOT. Dorsally, it borders on the ME, laterally on the CO. The central nucleus constitutes the dorsomedial part of the amygdala. The amygdalohippocampal area in chinchillas is located in the caudal part of the amygdala between the inferior horn of the lateral ventricle and CO. The chinchilla's cortical nucleus is a long band of neurons which constitutes the ventral part of the amygdala. The other amygdaloid areas include the anterior amygdaloid area (AAA) and intercalated nucleus (I) The intercalated nucleus consists of the group of neurons between the amygdala nuclei. The AAA constitutes the anterior pole of the chinchilla's amygdala.
4

Morfologia neuronow i topografia tworu hipokampa u szynszyli

51%
Szalak R., Eustachiewicz R., Lonc G., Luszczewska-Sierakowska I.
Medycyna Weterynaryjna
|
2006
|
tom 62
|
nr 04
444-447
The aim the study was to discover the structure and topography of formatio hippocampi in chinchillas (Chinchilla brevicaudata). Investigations were carried out on the brains of 5 chinchillas. The material was preserved in buffered 10% formalin, and then dehydrated in ethyl alcohol of rising concentrations, embedded in paraffin blocks and cut transversally into 12 micrometer-thick sections. The sections were then stained according to Klüver and Barreras method. The formatio hippocampi, classified as a part of the rhinencephalon, are located in the medial part of the cerebral hemisphere, and indents in an arch into the light of the lateral ventricle. In the case of chinchillas the fomatio hippocampus consists of the hippocampus and dentate areas and the following cortical nervous structure: subiculum and four areas from CA1 to CA4. Formatio hippocampi as a cortical structure has a laminar build. The following layers may be distinguished in the subiculum: the marginal layer and cellular layer I and II. The structure of CA1, CA2, CA3, CA4 areas contains the following layers: stratum oriens, stratum pyramidal, stratum radiatum, and stratum molecular. The dentate area is a part of the formatio hippocampi formed by the gyrus dentatus and hilus fasciae dentate. Gyrus dentatus as a cortical structure has a laminar build. It is made up of two layers: molecular stratum and granular stratum.
5

Comparison of localisation of Alpha - and Beta -oestrogen receptors in posterior part of the piriform cortex in rabbit males

51%
Krakowska I., Lonc G., Matysek M., Kupczynska M.
Bulletin of the Veterinary Institute in Puławy
|
2013
|
tom 57
|
nr 3
The aim of the study was to compare the immunoreactivity and distribution of two kinds of oestrogen receptors within the nerve tissue of the posterior part of the piriform cortex, as well as their localisation within nerve cells. The studied material consisted of 12 brains of sexually mature rabbit males weighing 3-4 kg. In order to prove the presence of α and ß receptors, Er-α and Er-ß antibodies were used. The examinations showed the presence of Er-α and E-rß receptors in all layers of the piriform cortex, however, mainly in the IInd and IIIrn layer. The reaction occurred in the nucleus and cytoplasm of neurons. The obtained results can imply the influence of oestrogen on the functions of the examined brain area in rabbits, which in human is responsible for perception and categorisation of odour.
6

Expression of α and β oestrogen receptors within the claustrum in rabbit males

51%
Matysek M., Krakowska I., Lonc G., Lalak R.
Bulletin of the Veterinary Institute in Puławy
|
2014
|
tom 58
|
nr 1
The aim of the study was to investigate the presence of a (Erα) and ß (Erß) oestrogen receptors in rabbit male's claustrum, and thus to examine whether oestrogens may influence nerve cells' functions of this structure, llie material for the study was obtained from the brains of seven rabbits. To detect the presence of Erα and Erß, specific monoclonal antibodies were used. T"he expression of Erα and Erß was demonstrated in proper claustrum, as well as in the nucleus endopiriformis. For Erß, the reaction occurred mainly in the cell nucleus, whereas Erα was localised predominantly in the neuron cytoplasm. For both Erα and Erß, the nuclear and cytoplasmic localisation was observed in a small percentage of the examined cells. The obtained results may indicate oestrogen influence on the brain area and also suggest a further research on oestrogen-dependent pathways in males, which still remain greatly unexplored.
7

Rola antagonistów glutaminianergicznych receptorów metabotropowych w eksperymentalnym bólu neuropatycznym u zwierząt

51%
Kania B. F., Bracha U., Lonc G., Wojnar T.
Medycyna Weterynaryjna
|
2020
|
tom 76
|
nr 10
8

Ultrastructure of renal tubular epithelial cells of rat’s kidneys after administration of L-arginine

45%
Perdycz A., Boratynski Z., Siermontowski P., Kaczerska D., Lonc G.
Bulletin of the Veterinary Institute in Puławy
|
2013
|
tom 57
|
nr 1
Sixteen white Wistar female rats were divided into two equal groups. Experimental group received per os 40 mg/kg b.w. of L-arginine, even other day for 2 weeks and were decapitated after 3 weeks of the experiment. Control rats received in the same manner 2 ml of distilled water and were decapitated after 3 weeks of the experiment. The renal lesions observed under electron microscope were of focal character and concerned only the experimental group. The tubules with necrotic cells were observed among normal tubules or single normal epithelial cells of the tubular wall. The boundaries between epithelial cells of the tubule wall were blurred. The mitochondria indicated abnormal structure. Numerous hsosomes and peroxisomes with dark, homogenous content were observed. The rough endoplasmic reticulum had widened channels and was focally completely destroyed. The nucleus of damaged cells was most commonly located in one of the cell poles; its shape was changed and visibly smaller than the nuclei of normal cells. Condensation and peripherally located chromatin were noticed. The lesions observed were characteristic for apoptotic cells.
9

Expression of alpha estrogen receptors in the neurons of the hippocampus in male rabbits

45%
Krakowska I., Jaworska-Adamu J., Lonc G., Matysek M., Badzian B.
Medycyna Weterynaryjna
|
2015
|
tom 71
|
nr 07
The subject of the present paper was to show presence of α estrogen receptors in neurons of hippocampal formation in adult male rabbits. Estrogen hormones perform a crucial role in sex differentiation and reproduction, but also influence a number of brain functions not connected with reproduction. Clinical examinations prove estrogens’ influence on cognitive processes, memory, mood, emotional behavior, pain sensation, mobility, state of balance. Estrogens have a neuroprotecting action, they influence neurons’ length of life and as a result of that, degenerative diseases of the nervous system connected with age. The examinations prove that estrogen substitutive therapy decreases the development rate of Alzheimer and Parkinson’s disease, multiple sclerosis, osteoporosis, depression and migraines. It is thought that estrogen administration in the case of these diseases diminishes intensification of symptoms. In relation to this, it is crucial to learn the mechanisms of hormones’ activity and determine the localization of their receptors. The obtained results indicate that estrogen hormones can influence cognitive processes, learning and memory. Learning the mechanisms of estrogens’ activity and determining which brain structures they influence can be helpful in treating neurodegenerative diseases. In adult rabbit males α estrogen receptors occur in neurons of the hippocampus in cytoplasm as well as cell nucleus. In the examined regions cytoplasmic and cytoplasmic-nuclear reaction predominates.
10

Morphometric analysis of cerebellum nuclei (nucleus dentatus et nucleus fastigii) in fetal life of cattle

45%
Krakowska I., Matysek M., Lonc G., Boratynski Z., Lopuszynski W.
Electronic Journal of Polish Agricultural Universities. Series Veterinary Medicine
|
2004
|
tom 07
|
nr 2
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