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Gálosi R, Szalay C, Aradi M, Perlaki G, Pál J, Steier R, Lénárd L, Karádi Z. Identifying non-toxic doses of manganese for manganese-enhanced magnetic resonance imaging to map brain areas activated by operant behavior in trained rats. Magn Reson Imaging 2016; 37:122-133. [PMID: 27889621 DOI: 10.1016/j.mri.2016.11.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 11/21/2016] [Accepted: 11/22/2016] [Indexed: 12/13/2022]
Abstract
Manganese-enhanced magnetic resonance imaging (MEMRI) offers unique advantages such as studying brain activation in freely moving rats, but its usefulness has not been previously evaluated during operant behavior training. Manganese in a form of MnCl2, at a dose of 20mg/kg, was intraperitoneally infused. The administration was repeated and separated by 24h to reach the dose of 40mg/kg or 60mg/kg, respectively. Hepatotoxicity of the MnCl2 was evaluated by determining serum aspartate aminotransferase, alanine aminotransferase, total bilirubin, albumin and protein levels. Neurological examination was also carried out. The animals were tested in visual cue discriminated operant task. Imaging was performed using a 3T clinical MR scanner. T1 values were determined before and after MnCl2 administrations. Manganese-enhanced images of each animal were subtracted from their baseline images to calculate decrease in the T1 value (ΔT1) voxel by voxel. The subtracted T1 maps of trained animals performing visual cue discriminated operant task, and those of naive rats were compared. The dose of 60mg/kg MnCl2 showed hepatotoxic effect, but even these animals did not exhibit neurological symptoms. The dose of 20 and 40mg/kg MnCl2 increased the number of omissions and did not affect the accuracy of performing the visual cue discriminated operant task. Using the accumulated dose of 40mg/kg, voxels with a significant enhanced ΔT1 value were detected in the following brain areas of the visual cue discriminated operant behavior performed animals compared to those in the controls: the visual, somatosensory, motor and premotor cortices, the insula, cingulate, ectorhinal, entorhinal, perirhinal and piriform cortices, hippocampus, amygdala with amygdalohippocampal areas, dorsal striatum, nucleus accumbens core, substantia nigra, and retrorubral field. In conclusion, the MEMRI proved to be a reliable method to accomplish brain activity mapping in correlation with the operant behavior of freely moving rodents.
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Affiliation(s)
- Rita Gálosi
- Institute of Physiology, Medical School of University of Pécs, Pécs, Hungary.
| | - Csaba Szalay
- Institute of Physiology, Medical School of University of Pécs, Pécs, Hungary.
| | | | - Gábor Perlaki
- Neurosurgery Clinic, Medical School of University of Pécs, Pécs, Hungary; Pécs Diagnostic Center, Pécs, Hungary
| | - József Pál
- Neurosurgery Clinic, Medical School of University of Pécs, Pécs, Hungary
| | - Roy Steier
- Neurosurgery Clinic, Medical School of University of Pécs, Pécs, Hungary.
| | - László Lénárd
- Institute of Physiology, Medical School of University of Pécs, Pécs, Hungary; Molecular Neuroendocrinology and Neurophysiology Research Group, Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Zoltán Karádi
- Institute of Physiology, Medical School of University of Pécs, Pécs, Hungary; Molecular Neuroendocrinology and Neurophysiology Research Group, Szentágothai Research Center, University of Pécs, Pécs, Hungary
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Szalay C, Erdelyi K, Kökény G, Pacher P, Hamar P. SP320OXIDATIVE/NITRATIVE STRESS AND INFLAMMATION DRIVE PROGRESSION OF DOXORUBICIN-INDUCED RENAL FIBROSIS IN RATS AS REVEALED BY COMPARING A NORMAL AND A FIBROSIS-RESISTANT RAT STRAIN. Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv191.40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Wasik AA, Koskelainen S, Hyvönen ME, Musante L, Lehtonen E, Koskenniemi K, Tienari J, Vaheri A, Kerjaschki D, Szalay C, Révész C, Varmanen P, Nyman TA, Hamar P, Holthöfer H, Lehtonen S. Ezrin Is Down-Regulated in Diabetic Kidney Glomeruli and Regulates Actin Reorganization and Glucose Uptake via GLUT1 in Cultured Podocytes. The American Journal of Pathology 2014; 184:1727-39. [DOI: 10.1016/j.ajpath.2014.03.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 02/28/2014] [Accepted: 03/05/2014] [Indexed: 01/27/2023]
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Kaucsár T, Bodor C, Godó M, Szalay C, Révész C, Németh Z, Mózes M, Szénási G, Rosivall L, Sőti C, Hamar P. LPS-induced delayed preconditioning is mediated by Hsp90 and involves the heat shock response in mouse kidney. PLoS One 2014; 9:e92004. [PMID: 24646925 PMCID: PMC3960147 DOI: 10.1371/journal.pone.0092004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Accepted: 02/15/2014] [Indexed: 11/18/2022] Open
Abstract
Introduction We and others demonstrated previously that preconditioning with endotoxin (LPS) protected from a subsequent lethal LPS challenge or from renal ischemia-reperfusion injury (IRI). LPS is effective in evoking the heat shock response, an ancient and essential cellular defense mechanism, which plays a role in resistance to, and recovery from diseases. Here, by using the pharmacological Hsp90 inhibitor novobiocin (NB), we investigated the role of Hsp90 and the heat shock response in LPS-induced delayed renal preconditioning. Methods Male C57BL/6 mice were treated with preconditioning (P: 2 mg/kg, ip.) and subsequent lethal (L: 10 mg/kg, ip.) doses of LPS alone or in combination with NB (100 mg/kg, ip.). Controls received saline (C) or NB. Results Preconditioning LPS conferred protection from a subsequent lethal LPS treatment. Importantly, the protective effect of LPS preconditioning was completely abolished by a concomitant treatment with NB. LPS induced a marked heat shock protein increase as demonstrated by Western blots of Hsp70 and Hsp90. NB alone also stimulated Hsp70 and Hsp90 mRNA but not protein expression. However, Hsp70 and Hsp90 protein induction in LPS-treated mice was abolished by a concomitant NB treatment, demonstrating a NB-induced impairment of the heat shock response to LPS preconditioning. Conclusion LPS-induced heat shock protein induction and tolerance to a subsequent lethal LPS treatment was prevented by the Hsp90 inhibitor, novobiocin. Our findings demonstrate a critical role of Hsp90 in LPS signaling, and a potential involvement of the heat shock response in LPS-induced preconditioning.
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Affiliation(s)
- Tamás Kaucsár
- Institute of Pathophysiology, Semmelweis University, Budapest, Hungary
| | - Csaba Bodor
- Institute of Pathophysiology, Semmelweis University, Budapest, Hungary
| | - Mária Godó
- Institute of Pathophysiology, Semmelweis University, Budapest, Hungary
| | - Csaba Szalay
- Institute of Pathophysiology, Semmelweis University, Budapest, Hungary
| | - Csaba Révész
- Institute of Pathophysiology, Semmelweis University, Budapest, Hungary
| | - Zalán Németh
- Institute of Pathophysiology, Semmelweis University, Budapest, Hungary
| | - Miklós Mózes
- Institute of Pathophysiology, Semmelweis University, Budapest, Hungary
| | - Gábor Szénási
- Institute of Pathophysiology, Semmelweis University, Budapest, Hungary
| | - László Rosivall
- Institute of Pathophysiology, Semmelweis University, Budapest, Hungary
- Hungarian Academy of Sciences-Semmelweis University, Nephrology Research Group, Budapest, Hungary
| | - Csaba Sőti
- Department of Medical Chemistry, Semmelweis University, Budapest, Hungary
- * E-mail: (CS); (PH)
| | - Péter Hamar
- Institute of Pathophysiology, Semmelweis University, Budapest, Hungary
- * E-mail: (CS); (PH)
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Szalay C, Aradi M, Schwarcz A, Orsi G, Perlaki G, Németh L, Hanna S, Takács G, Szabó I, Bajnok L, Vereczkei A, Dóczi T, Janszky J, Komoly S, Örs Horváth P, Lénárd L, Karadi Z. Gustatory perception alterations in obesity: an fMRI study. Brain Res 2012; 1473:131-40. [PMID: 22885291 DOI: 10.1016/j.brainres.2012.07.051] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 07/24/2012] [Accepted: 07/25/2012] [Indexed: 12/27/2022]
Abstract
The background of feeding associated and metabolic diseases is not sufficiently understood yet. Since gustatory alterations may be of particular significance in the above illnesses, in the present experiments, cerebral activation was detected by fMRI in twelve obese patients and twelve, age and gender matched healthy subjects. The gustatory stimulus solutions were delivered via intraorally positioned polyvinyl tubes. Each session consisted of three runs. Sucrose was used as a pleasant; quinine HCl as an aversive; and a high-calorie, vanilla flavored nourishment solution as a complex taste of high palatability. In each run, only one taste was used as a stimulus. During all runs, distilled water served as a neutral stimulus. Group analysis was made by using the FSL software package. The taste stimuli elicited characteristic and distinct activity changes of the two groups. In contrast to the controls, in the obese patients, stronger activation was detected in various cortical (anterior cingulate cortex, insular and opercular cortices, orbitofrontal cortex) and subcortical (amygdala, nucleus accumbens, putamen and pallidum) structures in case of all three stimuli. The present examinations elucidated differential activation of various brain structures to pleasant and unpleasant gustatory stimuli in obese patients compared to control subjects. These taste alterations are supposed to be of particular significance in obesity, and our findings may contribute to develop better strategies for prevention and effective therapies in the future.
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Affiliation(s)
- Csaba Szalay
- Institute of Physiology and Neurophysiology Research Group of the Hungarian Academy of Sciences, Pécs University, Medical School, Hungary.
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Nagy B, Szabó I, Papp S, Takács G, Szalay C, Karádi Z. Glucose-monitoring neurons in the mediodorsal prefrontal cortex. Brain Res 2012; 1444:38-44. [PMID: 22330723 DOI: 10.1016/j.brainres.2012.01.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 12/21/2011] [Accepted: 01/11/2012] [Indexed: 11/18/2022]
Abstract
The mediodorsal prefrontal cortex (mdPFC), a key structure of the limbic neural circuitry, plays important roles in the central regulation of feeding. As an integrant part of the forebrain dopamine (DA) system, it performs complex roles via interconnections with various brain areas where glucose-monitoring (GM) neurons have been identified. The main goal of the present experiments was to examine whether similar GM neurons exist in the mediodorsal prefrontal cortex. To search for such chemosensory cells here, and to estimate their involvement in the DA circuitry, extracellular single neuron activity of the mediodorsal prefrontal cortex of anesthetized Wistar and Sprague-Dawley rats was recorded by means of tungsten wire multibarreled glass microelectrodes during microelectrophoretic administration of d-glucose and DA. One fourth of the neurons tested changed in firing rate in response to glucose, thus, proved to be elements of the forebrain GM neural network. DA responsive neurons in the mdPFC were found to represent similar proportion of all cells; the glucose-excited units were shown to display excitatory whereas the glucose-inhibited neurons were demonstrated to exert mainly inhibitory responses to dopamine. The glucose-monitoring neurons of the mdPFC and their distinct DA sensitivity are suggested to be of particular significance in adaptive processes of the central feeding control.
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Affiliation(s)
- Bernadett Nagy
- Pécs University, Medical School, Institute of Physiology and Neurophysiology Research Group of the Hungarian Academy of Sciences,Pécs, Hungary.
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Vereczkei A, Szalay C, Aradi M, Schwarcz A, Orsi G, Perlaki G, Karádi Z, Németh L, Hanna S, Takács G, Szabó I, Bajnok L, Mohos E, Lénárd L, Dóczi T, Janszky J, Komoly S, Horváth OP. [Functional MRI investigation of brain activity triggered by taste stimulation]. Magy Seb 2011; 64:289-293. [PMID: 22169342 DOI: 10.1556/maseb.64.2011.6.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
INTRODUCTION Many factors contribute to the pathogenesis of morbid obesity, and the central nervous system - as one of those - also has an important role. Numerous studies focus on the central regulation of eating and metabolism, since associated problems like obesity, anorexia, diabetes or metabolic syndrome put an increasing burden on the health system of modern societies. Neither the pathophysiologic changes, nor the normal regulation of these systems are known adequately. Functional MR (fMRI) imaging, which has certainly gained popularity recently, aims to better understand these mechanisms. In this series we studied the brain fMRI activity changes of normal and obese persons, triggered by gustatory stimulation. METHODS 10 obese and 10 normal weight healthy volunteers took part in the study, with comparable age and sex distribution. Gustatory stimulation was performed by 0.1 M sucrose (pleasant), 0.5 mM quinine HCl (unpleasant) and complex vanilla flavored (Nutridrink) solutions, which were administered through 0.5 mm PVC tubes, in 5-5 ml portions. For rinsing distilled water with neutral flavor was used. Imaging was performed in a 3T MRI, applying standard EPI sequences. Post processing of data was accomplished by FSL software package. RESULTS Brain activation for gustatory stimuli was characteristically different between the two groups. There were high intensity activations in more cortical and subcortical regions of the obese volunteers compared to the normal ones. CONCLUSIONS Our current fMRI investigations revealed different activations of numerous brain regions of normal and obese individuals, triggered by pleasant and unpleasant gustatory stimulation. Based on these results this method can help to recognize the role of the central nervous system in obesity, and may contribute to develop new therapies for weight loss.
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Horváth RA, Schwarcz A, Aradi M, Auer T, Fehér N, Kovács N, Tényi T, Szalay C, Perlaki G, Orsi G, Komoly S, Dóczi T, Woermann FG, Gyimesi C, Janszky J. Lateralisation of non-metric rhythm. Laterality 2011; 16:620-35. [PMID: 21424982 DOI: 10.1080/1357650x.2010.515990] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
There are contradictory results on lateralisation and localisation of rhythm processing. Our aim was to test whether there is a hemispheric dissociation of metric and non-metric rhythm processing. We created a non-metric rhythm stimulus without a sense of metre and we measured brain activities during passive rhythm perception. A total of 11 healthy, right-handed, native female Hungarian speakers aged 21.3 ± 1.1 were investigated by functional magnetic resonance imaging (fMRI) using a 3T MR scanner. The experimental acoustic stimulus consisted of comprehensive sentences transformed to Morse code, which represent a non-metric rhythm with irregular perceptual accent structure. Activations were found in the right hemisphere, in the posterior parts of the right-sided superior and middle temporal gyri and temporal pole as well as in the orbital part of the right inferior frontal gyrus. Additional activation appeared in the left-sided superior temporal region. Our study suggests that non-metric rhythm with irregular perceptual accents structure is confined to the right hemisphere. Furthermore, a right-lateralised fronto-temporal network extracts the continuously altering temporal structure of the non-metric rhythm.
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Orsi G, Perlaki G, Kovacs N, Aradi M, Papp Z, Karadi K, Szalay C, Karadi Z, Lenard L, Tenyi T, Plozer E, Gabriel R, Nagy F, Doczi T, Komoly S, Jokeit H, Schwarcz A, Janszky J. Body weight and the reward system: the volume of the right amygdala may be associated with body mass index in young overweight men. Brain Imaging Behav 2011; 5:149-57. [DOI: 10.1007/s11682-011-9119-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Abstract
AIM Anorexia nervosa is a complex psychiatric disorder posing a rapidly increasing burden on modern societies. Our purpose was to clarify perceptual-motivational aspects of gustatory disturbances in the disease. METHODS A taste reactivity test, with the use of all five primary qualities in two concentrations, was performed in restrictive-type anorexic patients, and their hedonic evaluations were compared to those of age-matched healthy control subjects. RESULTS The patients gave significantly lower pleasantness scores for pleasant taste stimuli compared with controls. The differences were the greatest for the lower concentration sucrose, umami and sodium chloride. Ratings given for the aversive taste stimuli were similar in both experimental groups. CONCLUSION Our findings contribute to a better understanding of complex symptoms of anorexia nervosa, and may also help to develop more effective cognitive-behavioral therapies.
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Affiliation(s)
- Csaba Szalay
- Institute of Physiology and Neurophysiology Research Group of the Hungarian Academy of Sciences, Pécs University Medical School, Pécs, Hungary.
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Takács G, Papp S, Lukáts B, Szalay C, Nagy B, Fotakos D, Karádi Z. Homeostatic alterations after IL-1beta microinjection into the nucleus accumbens of the rat. Appetite 2010; 54:354-62. [PMID: 20060862 DOI: 10.1016/j.appet.2010.01.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Revised: 12/29/2009] [Accepted: 01/05/2010] [Indexed: 10/20/2022]
Abstract
The present study investigates the effects of direct administration of interleukin-1beta (IL-1beta) into the nucleus accumbens (NAcc) on homeostatic regulation. Short- and long-term food intakes (FI), water intakes (WI) and body temperature (BT) were measured before and after bilateral microinjection of IL-1beta (with or without paracetamol pretreatment) into the NAcc of Wistar rats, and the effects were compared with those found in vehicle treated control animals. In addition, blood glucose levels, along with a glucose tolerance test (GTT), and plasma concentrations of metabolic parameters, such as total cholesterol, triglycerides, HDL, LDL and uric acid were determined in cytokine treated and control rats. Short-term FI and WI were suppressed after intraaccumbens application of IL-1beta. A significant increase of BT was also observed after the cytokine microinjection. Pretreatment with paracetamol failed to influence the anorexigenic, adipsogenic, and pyrogenic effects of IL-1beta. A definite glucose intolerance of the cytokine treated animals and their pathologically elevated blood glucose levels became obvious in the acute GTT. Following IL-1beta microinjection, plasma levels of triglycerides, total cholesterol and LDL were found increased. Our present findings show that the NAcc is an important site of action of IL-1beta mediated processes in central homeostatic regulation.
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Affiliation(s)
- Gábor Takács
- Institute of Physiology and Neurophysiology Research Group of the Hungarian Academy of Sciences, Pécs University, Medical School, Szigeti str. 12, H-7624 Pécs, Hungary.
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Takács G, Lukáts B, Papp S, Szalay C, Karádi Z. Taste reactivity alterations after IL-1β microinjection into the ventromedial hypothalamic nucleus of the rat. Neurosci Res 2008; 62:118-22. [DOI: 10.1016/j.neures.2008.06.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2008] [Revised: 06/24/2008] [Accepted: 06/25/2008] [Indexed: 10/21/2022]
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Auer T, Schwarcz A, Aradi M, Kalmár Z, Pendleton C, Janszky I, Horváth RA, Szalay C, Dóczi T, Komoly S, Janszky J. Right–left discrimination is related to the right hemisphere. Laterality 2008; 13:427-38. [DOI: 10.1080/13576500802114120] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Auer T, Barsi P, Bone B, Angyalosi A, Aradi M, Szalay C, Horvath RA, Kovacs N, Kotek G, Fogarasi A, Komoly S, Janszky I, Schwarcz A, Janszky J. History of simple febrile seizures is associated with hippocampal abnormalities in adults. Epilepsia 2008; 49:1562-9. [PMID: 18503555 DOI: 10.1111/j.1528-1167.2008.01679.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
SUMMARY BACKGROUND It is unclear whether the hippocampal abnormality in temporal lobe epilepsy (TLE) is a consequence or the cause of afebrile or febrile seizures (FSs). We investigated whether hippocampal abnormalities are present in healthy adults>15 years after a simple FS. METHODS Eight healthy subjects (5 men) with a history of simple FS (FS+ group) and eight sex- and aged-matched control subjects (FS- group) were investigated by three MR methods: blinded visual inspection of the MRI pictures; automatic voxel-based volumetry; and T2 relaxation time measurements. RESULTS The mean total volume of the two hippocampi was 5.36 +/- 1.33 cm(3)in the FS+ group and 6.63 +/- 1.46 cm(3)in the FS- group (p = 0.069). The T2 values in the anterior part of the left hippocampus (p = 0.036) and in the middle part of the right hippocampus (p = 0.025) were elevated in the FS+ subjects. The mean volume of the right hippocampus was 3.05 +/- 0.8 cm(3)in the FS+ men and 4.05 +/- 0.48 cm(3)in the FS- men (p = 0.043). The mean total volume of the two hippocampi was 5.38 +/- 1.4 cm(3)in the FS+ men and 7.48 +/- 1.14 cm(3)in the FS- men (p = 0.043). There were three FS+ men in whom hippocampal abnormalities including hippocampal sclerosis (HS) and dysgenesis were observed on visual inspection. CONCLUSIONS A history of simple FS in childhood can be associated with hippocampal abnormalities in adults. These abnormalities are probably more pronounced in men. Simple FS may not be as a benign event as previously thought. Our findings suggest that hippocampal abnormalities associated with FS are not necessarily epileptogenic.
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Affiliation(s)
- Tibor Auer
- Department of Neurology, University of Pécs, Pécs, Hungary
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Abstract
The nucleus accumbens, a key structure of the limbic circuitry, is involved in the regulation of motivated behaviors. The accumbens performs its roles via interconnections with brain areas where glucose-monitoring neurons have been localized. To search for such integrative chemosensory cells here, extracellular single neuron activity was recorded in the nucleus accumbens of Wistar rats by means of multibarreled glass microelectrodes during microelectrophoretic administration of D-glucose and other chemicals. Every fourth neuron tested changed in activity in response to glucose. Accumbens cells also displayed distinct gamma-amino-n-butyric acid type sensitivity. It is suggested that differential distribution of the chemosensory units, demonstrated between subdivisions of the nucleus accumbens, has particular significance with respect to functional dichotomy of the shell and core subregions.
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Affiliation(s)
- Szilárd Papp
- Pécs University, Medical School, Institute of Physiology of the Hungarian Academy of Sciences, Pécs, Hungary.
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Karádi Z, Lukáts B, Papp S, Szalay C, Egyed R, Lénárd L, Takács G. Involvement of Forebrain Glucose-monitoring Neurons in Taste Information Processing: Electrophysiological and Behavioral Studies. Chem Senses 2005; 30 Suppl 1:i168-9. [PMID: 15738095 DOI: 10.1093/chemse/bjh167] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Zoltán Karádi
- Pécs University, Medical School, Institute of Physiology, Neurophysiology Research Group of the Hungarian Academy of Sciences (HAS), H-7601 Pécs, POB 99, Hungary.
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Kiss I, Császár A, Kerkovits L, Takács G, Szalay C, Romics L, Farsang C. GENETIC RISK OF ANGIOTENSIN-CONVERTING ENZYME GENE I/D AND ANGIOTENSIN II RECEPTOR TYPE-. J Hypertens 2000. [DOI: 10.1097/00004872-200006001-00643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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