Wyniki wyszukiwania

1

Neurobiology of infant attachment: unique role of the locus coeruleus and amygdala supporting learning

100%

Sullivan R. M.

Acta Neurobiologiae Experimentalis

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2005

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tom 65

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nr 5

2

A morphometric study of the amygdala in the guinea pig

100%

Rowniak M., Robak A., Szteyn S., Bogus-Nowakowska K., Wasilewska B., Najdzion J.

Folia Morphologica

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2005

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tom 64

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nr 3

151-160

The characteristic features of guinea pig amygdala (CA), as shown by volumetric comparisons of the individual nuclei, are the poor development of the basolateral (BL) and lateral olfactory tract (NLOT) nuclei as well as the strong formation of the lateral (LA) and basomedial (BM) nuclei. The central (CE), cortical (CO) and medial (ME) nuclei also appear to be well represented in this species. All these features are even more pronounced when the total number of neurons in the nuclei referred to was taken into consideration. A comparison of the densities of neurons in the individual nuclei with the mean numerical density of cells in the guinea pig CA indicates that the densities of neurons in LA, BL, BM, CE and CO are significantly lower than the mean (p < 0.05), whereas in the ME and NLOT these values are significantly higher than the mean (p < 0.05). It is noteworthy, that the densities of the neurons in CE and CO do not differ statistically from each other (p > 0.05) and are significantly higher than the respective values in LA, BL and BM (p < 0.05). Furthermore, a similar division of the guinea pig CA may to some extent be made using the size parameters of the amygdaloid neurons as a marker. Interestingly, the large neurons populate organised CA areas like LA, BL and BM less densely, whereas the small cells create ME and NLOT, where the neurons are densely arranged. CE and CO occupy intermediate positions, with the neurons similar in size to the mean for the guinea pig CA.

3

A morphometric study of the amygdala in the common shrew

100%

Rowniak M., Szteyn S., Robak A.

Folia Morphologica

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2004

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tom 63

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nr 4

The characteristic features of the common shrew amygdala (CA), as shown by volumetric comparisons of the individual nuclei, are the poor development of the lateral (LA) and basomedial (BM) nuclei as well as the particularly strong formation of the basolateral (BL) and lateral olfactory tract (NLOT) nuclei. The central (CE), cortical (CO) and medial (ME) nuclei are also well organised in this species. All these features are even more distinctly visible when the total number of neurons in the nuclei referred to are compared. A comparison of the densities of neurons in the individual nuclei with the mean numerical density of cells in the CA indicates that there are the 3 different regions within the common shrew’s CA. The densities of neurons in the LA, BL, and BM are significantly lower than the mean density of cells in the CA (p < 0.05). In the CE this value does not differ from the mean (p > 0.05). In the CO, ME and NLOT the density values are significantly higher than the mean (p < 0.05). Furthermore, a similar division of the shrew’s CA can, to some extent, be performed using the size parameters of the amygdaloid neurons as a marker. Interestingly, the large neurons populate less densely organised CA areas like the LA, BL and BM, whereas the small cells populate the ME and NLOT, where the neurons are densely arranged. The CE and CO occupy intermediate positions, with the neurons similar in size to the mean for the shrew’s CA.

4

Somatostatin-like immunoreactivity in the amygdala of the pig

86%

Rowniak M., Robak A., Bogus-Nowakowska K., Kolenkiewicz M., Bossowska A., Wojtkiewicz J., Skobowiat C., Majewski M.

Folia Histochemica et Cytobiologica

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2008

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tom 46

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nr 2

229-238

5

Convergence of differentially processed inputs in the primate amygdala

86%

Gothard K.

Acta Neurobiologiae Experimentalis

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2005

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tom 65

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nr 5

6

Developmental changes of morphology in the basolateral complex of the rabbit amygdala

86%

Jagalska-Majewska H., Luczynska A., Wojcik S., Dziewiatkowski J., Kurlapska R., Morys J.

Folia Morphologica

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2003

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tom 62

|

nr 3

227-230

The aim of the present study is to follow topographical and morphological changes in the development of the amygdaloid basolateral complex (BLC) in the rabbit. The material consists of 35 brains of New Zealand rabbits of both sexes, divided into 7 age groups (P2–P90). In cresyl violet preparations BLC is already well visible on P2 and is composed of the lateral (divided into dorsolateral and ventromedial divisions), basolateral and homogenous basomedial nuclei. On about the 7th postnatal day it is possible to divide the basomedial nucleus (BM) into dorsal (Bmd) and ventral (BMv) divisions. The topography and subdivisions set on P7 are maintained in further periods of life. The morphology of neurons (shape, dendrites, staining) changes significantly until P21 in all BLC nuclei. Our results indicate that BLC achieves morphological maturity relatively late, which is probably connected with a long creation of emotional memory and regulation of emotional behaviour.

7

Lesions of the central nucleus of the amygdala only impair flavor aversion learning in the absence of olfactory information

86%

Aguera A. D. R., Puerto A.

Acta Neurobiologiae Experimentalis

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2015

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tom 75

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nr 4

The amygdala is considered a crucial brain nucleus in different modalities of aversive conditioning, including flavor aversion learning (FAL). The importance attributed to the amygdala and its subnuclei has frequently depended on the different stimuli and procedures used in FAL tasks. In this study, FAL was impaired only in animals that had lesions in the central nucleus of the amygdala (CeA) area and also had their olfactory bulbs removed. However, this task was learned by neurologically intact animals, bulbectomized animals, and rats with lesions exclusively centered in the CeA area alone. These results suggest that the CeA area may be relevant in gustatory-gut associative learning but not in FAL, in which the olfactory system may counteract the deficit produced in taste-visceral convergence.

8

Anatomic heterogeneity of the rat amygdaloid complex

86%

Pitkanen A., Jolkkonen E., Kemppainen S.

Folia Morphologica

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2000

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tom 59

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nr 1

The amygdala is a nuclear complex composed of 13 nuclei and cortical areas and their subdivisions. Tract-tracing studies performed over the past 20 years demonstrate that each nucleus is uniquely connected with other brain areas. Consistent with anatomic heterogeneity, the functions of the amygdala vary from attention to memory to formation of emotional responses to sensory stimuli. Here, we briefly review the principles of amygdaloid neuronal wiring that underlie the computations necessary to perform such complex behavioural functions.

9

The influence of open field exposure on neurons containing nitric oxide synthase in the basolateral complex and paracapsular intercalated nerve cells of the rat amygdala

86%

Ludkiewicz B., Klejbor I., Domaradzka-Pytel B., Wojcik S., Luczynska A., Badowska-Szalewska E., Dziewiatkowski J., Morys J.

Folia Morphologica

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2004

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tom 63

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nr 4

Our intention in the present study was to ascertain whether NO-producing cells in the basolateral complex (BLC) and paracapsular intercalated nerve cell groups (Ip) of the amygdala are activated in the open field (OF) test. The material consisted of 8 adult rat brains. The OF test was applied throughout 10 min and 90 min before the death of the animals. The brain sections were double stained using the antibodies against c-Fos (marker of neuronal activation) and against nitric oxide synthase (NOS — marker of NO-producing cells). The neurons containing NOS and those revealing c-Fos activity constituted distinct populations within both the BLC and Ip but NOS-immunoreactive fibres often surrounded the c-Fos-immunoreactive neurons. Our results suggest that (1) neurons of the basolateral complex of the amygdala and paracapsular intercalated islands are involved but probably not crucial for the open field stress response and (2) NOS-immunoreactive cells in the BLC and Ip are not activated after OF exposure.

10

Corticotropin releasing factor receptor 1 antagonist differentially inhibits freezing behavior and changes gamma-aminobutyric acid-ergic activity in the amygdala in low- and high-anxiety rats

72%

Skorzewska A., Wislowska-Stanek A., Lehner M., Turzynska D., Sobolewska A., Krzascik P., Plaznik A.

Journal of Physiology and Pharmacology

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2017

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tom 68

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nr 1

11

Effects of intra-amygdaloid TRH injections on motor activity and dominant-submissive behavior in rats competing for water

72%

Pucilowski O., Trzaskowska E., Jankowska E., Kostowski W., Kupryszewski G.

Acta Physiologica Polonica

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1990

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tom 41

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nr 1-3

Puciłowski O., Trzaskowska E., Jankowska E., Kostowski W., Kupryszewski G.: Effects of intra-amygdaloid TRH injections on motor activity and dominant-submissive behavior in rats competing for water. Acta Physiol. Pol. 1990, 41(1-3); 71-77. The effect of thyrotropin releasing hormone (TRH) microinjections into the central amygdala (10 g in 0.5 1 into each side) on locomotor activity, water intake and dominance behavior in a water competition test was investigated in male Wistar rats. TRH increased the general motility without altering the number of rearings. Intra-amygdaloid TRH injection to submissive rats resulted in a loss ol subordinate position in these animals in the water competition test. A tendency to decrease dominance followed the injection оf the peptide to the dominant animals. The effect of TRH in the dominance test does not appear to involve influence on the thirst drive as microinjection of the peptide did not change significantly the water consumption in thirsty rats.

12

In search of memory's trace:the case of visual imprinting

72%

Horn G.

Acta Neurobiologiae Experimentalis

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2005

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tom 65

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nr 5

13

The immunoreactivity of c-Fos, NGF and its receptor TrkA after open-field exposure in the central and medial nuclei of the rat amygdala

72%

Badowska-Szalewska E., Ludkiewicz B., Domaradzka-Pytel B., Dziewiatkowski J., Spodnik J. H., Morys J.

Folia Morphologica

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2006

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tom 65

|

nr 2

145-151

The amygdala is a critical component of the neuroanatomical stress circuit. It plays a role in the generation of responses to emotional stimuli. The central (CeA) and medial (MeA) amygdaloid nuclei are implicated in activation of the hypothalamic-pituitary-adrenocortical (HPA) axis. The immunoreactivity (-ir) of c-Fos, NGF and its receptor, TrkA, following acute and chronic open-field stress were studied in the CeA and MeA nuclei of the amygdala. The material consisted of 21 male adult rats divided into three groups: non-stressed (control) animals, rats exposed to acute (once only lasting 15 min) and chronic (15 min daily over 21 days) aversive stimulation (open-field exposure). The brains were stained with the use of immunohistochemical methods for c-Fos, NGF or TrkA. In the control rats c-Fos-, TrkA- and NGF-ir cells were observed in the nuclei studied, but the quantity varied, being moderate or high (immunoreactive to TrkA and NGF) or low (immunoreactive to c-Fos). In the animals exposed to acute open-field stress the number of c-Fos-ir, NGF-ir and TrkA-ir cells in the nuclei under examination was differentiated but higher than that in the control animals. In the animals exposed to chronic open-field stress the number of c-Fos-ir cells in the nuclei studied was similar and was smaller than those in animals exposed to acute stress. The number of TrkA-ir neurons was also lower in comparison to that in animals exposed to acute stress. However, no significant differences in the number of NGF-ir cells were observed between the groups exposed to acute and chronic stress. Diverse expression of c-Fos protein following both acute and chronic stress stimulation may prove the functional heterogeneity of the amygdaloid nuclei investigated. The decrease observed in both c-Fos- and TrkA-ir in MeA (only TrkA in CeA) of animals exposed to chronic stress may indicate the phenomenon of habituation.

14

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Bioelectrical activity of the amygdala of rats under conditions of chronic alcoholism and imbalance of nitric oxide

72%

Severynovska O., Babicheva V., Galinskiiy A., Rudenko A., Bogatyreva O., Boyko M.

International Letters of Natural Sciences

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2015

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tom 49

Evaluation of biopotentials in the region of the amygdala of rats in the combined influence of alcohol and drugs, causing an imbalance of nitric oxide is described in this paper. Chronic alcoholism leads to structural morphological changes in the liver. A study of the amplitude of electrical activity showed that the electrical potential in the amygdala after 8 weeks chronic alcoholism was lower compared with normal rats. The frequency spectrum analysis showed decreased in the 2 times or more absolute spectral powers of all components. The relative spectral powers of its components: δ: θ: α: β was as a 2: 2: 2: 4. The use of sodium nitroprusside (donator of NO) together with the chronic consumption of ethanol reduces the effect of ethanol on low and high-frequence portion the performance of the bioelectrical activities spectrum in the amygdala. The use of non-selective blocker of NO-synthase – nitroarginine aggravated by the braking action of alcohol. The important role of nitric oxide in the development of adaptive-compensatory reactions of the damaged body is described. Our results may be useful to assess the contribution of NO in operation amygdala, conditions of chronic pathologies, and treatment of neuropsychiatric conditions, including diseases caused by alcohol abuse.

15

A search for colocalization of mGlu 1a receptors with CRF or NPY in the rat brain amygdala

72%

Smialowska M., Wieronska J. M., Wedzony K.

Folia Histochemica et Cytobiologica

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2002

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tom 40

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nr 2

16

Effects of the anterior temporal lobe lesions, separate or combined with hippocampal damage, on spatial delayed responses guided by auditory stimulus

72%

Kowalska D. M.

Acta Neurobiologiae Experimentalis

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1999

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tom 59

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nr 4

17

6-OHDA bilateral lesions to the central amygdala do not affect vasopressin improvement of recall in rats

72%

Winnicka M. M.

Acta Neurobiologiae Experimentalis

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1996

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tom 56

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nr 4

18

A morphometric study of the amygdala in the rabbit

72%

Rowniak M., Robak A., Szteyn S., Bogus-Nowakowska K., Wasilewska B., Najdzion J.

Folia Morphologica

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2007

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tom 66

|

nr 1

Volumetric measurements of the individual nuclei in the amygdala (CA) of the rabbit reveal poor development of the basolateral (BL) and lateral olfactory tract (NLOT) and medial (ME) nuclei. On the other hand, the volumes of the lateral (LA), basomedial (BM), central (CE) and cortical (CO) nuclei are remarkable in this species. A comparison of the densities of neurons in the individual nuclei with the mean numerical density of cells in the rabbit CA indicates that the densities of neurons in LA, BL and BM are significantly lower than the mean (p < 0.05), whereas in CE, CO, ME and NLOT these values are significantly higher than the mean (p < 0.05). It should be noted, however, that of all the nuclei studied those in CE show the greatest similarity in density to CA as a whole. To some extent a similar division of the rabbit CA may be made using the size parameters of the amygdaloid neurons as a marker. The large neurons populate less densely organised CA areas such as LA, BL and BM, whereas the small cells create ME and NLOT, where the neurons are densely arranged. The CE and CO occupy intermediate positions, with the neurons similar in size to the mean for the total rabbit CA. These morphometric data from CA in the rabbit, when compared with the similar data for the common shrew and guinea pig (see our previous papers), lead to the conclusion that the amygdalae in all three species are very similar with respect to the distribution of neurons in relation to density and size and that, when volumetric measurements are taken into account, CA in the rabbit is much more similar to that of the guinea pig than that of the common shrew.

19

Expression of c-Fos in response to stressogenic stimuli in the amygdala of old vs. young rats - a preliminary study

72%

Boguszewski P., Zagrodzka J.

Acta Neurobiologiae Experimentalis

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2005

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tom 65

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nr 2

20

Development and maturation of parvalbumin and calbindin in intercalated cells of the rat amygdala

72%

Berdel B., Maciejewska B., Domaradzka-Pytel B., Morys J.

Folia Morphologica

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1998

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tom 57

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nr 1

Ograniczanie wyników

Neurobiology of infant attachment: unique role of the locus coeruleus and amygdala supporting learning

A morphometric study of the amygdala in the guinea pig

A morphometric study of the amygdala in the common shrew

Somatostatin-like immunoreactivity in the amygdala of the pig

Convergence of differentially processed inputs in the primate amygdala

Developmental changes of morphology in the basolateral complex of the rabbit amygdala

Lesions of the central nucleus of the amygdala only impair flavor aversion learning in the absence of olfactory information

Anatomic heterogeneity of the rat amygdaloid complex

The influence of open field exposure on neurons containing nitric oxide synthase in the basolateral complex and paracapsular intercalated nerve cells of the rat amygdala

Corticotropin releasing factor receptor 1 antagonist differentially inhibits freezing behavior and changes gamma-aminobutyric acid-ergic activity in the amygdala in low- and high-anxiety rats

Effects of intra-amygdaloid TRH injections on motor activity and dominant-submissive behavior in rats competing for water

In search of memory's trace:the case of visual imprinting

The immunoreactivity of c-Fos, NGF and its receptor TrkA after open-field exposure in the central and medial nuclei of the rat amygdala

Bioelectrical activity of the amygdala of rats under conditions of chronic alcoholism and imbalance of nitric oxide

A search for colocalization of mGlu 1a receptors with CRF or NPY in the rat brain amygdala

Effects of the anterior temporal lobe lesions, separate or combined with hippocampal damage, on spatial delayed responses guided by auditory stimulus

6-OHDA bilateral lesions to the central amygdala do not affect vasopressin improvement of recall in rats

A morphometric study of the amygdala in the rabbit

Expression of c-Fos in response to stressogenic stimuli in the amygdala of old vs. young rats - a preliminary study

Development and maturation of parvalbumin and calbindin in intercalated cells of the rat amygdala