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Sophie Erhardt

Rådsforskare

Besöksadress : Nanna Svartz Väg 2 171 77 Stockholm
Postadress : Institutionen för fysiologi och farmakologi (FYFA), C3, Erhardt Sophie grupp - Neuropsykoimmunologi, 171 77 Stockholm
Leveransadress : Nanna Svartz Väg 2 171 77 Stockholm

Om mig

Professor i Experimentell Psykiatri samt forskargruppsledare för Neuropsykoimmunologi på institutionen för fysiologi och farmakologi. 

Länkar

Publikationer

CSF GABA is reduced in first-episode psychosis and associates to symptom severity
Orhan F, Fatouros-bergman H, Goiny M, Malmqvist A, Piehl F, Karolinska Schizophrenia Project (kasp) Consortium, et al
Molecular psychiatry 2017;():-

Decreased levels of kynurenic acid in prefrontal cortex in a genetic animal model of depression
Liu Xc, Erhardt S, Goiny M, Engberg G, Mathé Aa
Acta neuropsychiatrica 2017;29(1):54-58

Kynurenic acid and psychotic symptoms and personality traits in twins with psychiatric morbidity
Kegel Me, Johansson V, Wetterberg L, Bhat M, Schwieler L, Cannon Td, et al
Psychiatry research 2017;247():105-112

Lower levels of the glial cell marker TSPO in drug-naive first-episode psychosis patients as measured using PET and [C]PBR28
Collste K, Plavén-sigray P, Fatouros-bergman H, Victorsson P, Schain M, Forsberg A, et al
Molecular psychiatry 2017;22(6):850-856

Positive symptoms associate with cortical thinning in the superior temporal gyrus via the ENIGMA Schizophrenia consortium
Walton E, Hibar Dp, Van Erp Tg, Potkin Sg, Roiz-santiañez R, Crespo-facorro B, et al
Acta psychiatrica Scandinavica 2017;135(5):439-447

The kynurenine pathway in schizophrenia and bipolar disorder
Erhardt S, Schwieler L, Imbeault S, Engberg G
Neuropharmacology 2017;112(Pt B):297-306

Twelve-week physical exercise does not have a long-lasting effect on kynurenines in plasma of depressed patients
Millischer V, Erhardt S, Ekblom Ö, Forsell Y, Lavebratt C
Neuropsychiatric disease and treatment 2017;13():967-972

Adaptive and Behavioral Changes in Kynurenine 3-Monooxygenase Knockout Mice: Relevance to Psychotic Disorders
Erhardt S, Pocivavsek A, Repici M, Liu Xc, Imbeault S, Maddison Dc, et al
Biological psychiatry 2016;():-

A genome-wide association study of kynurenic acid in cerebrospinal fluid: implications for psychosis and cognitive impairment in bipolar disorder
Sellgren Cm, Kegel Me, Bergen Se, Ekman Cj, Olsson S, Larsson M, et al
Molecular psychiatry 2016;21(10):1342-50

An enzyme in the kynurenine pathway that governs vulnerability to suicidal behavior by regulating excitotoxicity and neuroinflammation
Brundin L, Sellgren Cm, Lim Ck, Grit J, Pålsson E, Landén M, et al
Translational psychiatry 2016;6(8):e865-

Cerebrospinal fluid kynurenines in multiple sclerosis; relation to disease course and neurocognitive symptoms
Aeinehband S, Brenner P, Ståhl S, Bhat M, Fidock Md, Khademi M, et al
Brain, behavior, and immunity 2016;51():47-55

Direct effects of exercise on kynurenine metabolism in people with normal glucose tolerance or type 2 diabetes
Mudry Jm, Alm Ps, Erhardt S, Goiny M, Fritz T, Caidahl K, et al
Diabetes/metabolism research and reviews 2016;32(7):754-761

Electroconvulsive therapy suppresses the neurotoxic branch of the kynurenine pathway in treatment-resistant depressed patients
Schwieler L, Samuelsson M, Frye Ma, Bhat M, Schuppe-koistinen I, Jungholm O, et al
Journal of neuroinflammation 2016;13(1):51-

Endurance exercise increases skeletal muscle kynurenine aminotransferases and plasma kynurenic acid in humans
Schlittler M, Goiny M, Agudelo Lz, Venckunas T, Brazaitis M, Skurvydas A, et al
American journal of physiology. Cell physiology 2016;310(10):C836-40

EWS-FLI1 impairs aryl hydrocarbon receptor activation by blocking tryptophan breakdown via the kynurenine pathway
Mutz Cn, Schwentner R, Kauer Mo, Katschnig Am, Kromp F, Aryee Dn, et al
FEBS letters 2016;590(14):2063-75

Inhibition of kynurenine aminotransferase II reduces activity of midbrain dopamine neurons
Linderholm Kr, Alm Mt, Larsson Mk, Olsson Sk, Goiny M, Hajos M, et al
Neuropharmacology 2016;102():42-7

Repeated LPS Injection Induces Distinct Changes in the Kynurenine Pathway in Mice
Larsson Mk, Faka A, Bhat M, Imbeault S, Goiny M, Orhan F, et al
Neurochemical research 2016;41(9):2243-55

The CD44 ligand hyaluronic acid is elevated in the cerebrospinal fluid of suicide attempters and is associated with increased blood-brain barrier permeability
Ventorp F, Barzilay R, Erhardt S, Samuelsson M, Träskman-bendz L, Janelidze S, et al
Journal of affective disorders 2016;193():349-54

Tryptophan, kynurenine, and kynurenine metabolites: Relationship to lifetime aggression and inflammatory markers in human subjects
Coccaro Ef, Lee R, Fanning Jr, Fuchs D, Goiny M, Erhardt S, et al
Psychoneuroendocrinology 2016;71():189-96

Tryptophan Metabolism Along the Kynurenine Pathway Downstream of Toll-like Receptor Stimulation in Peripheral Monocytes
Orhan F, Bhat M, Sandberg K, Ståhl S, Piehl F, Karolinska Schizophrenia Project (kasp) Consortium, et al
Scandinavian journal of immunology 2016;84(5):262-271

A role for inflammatory metabolites as modulators of the glutamate N-methyl-D-aspartate receptor in depression and suicidality
Bay-richter C, Linderholm Kr, Lim Ck, Samuelsson M, Träskman-bendz L, Guillemin Gj, et al
Brain, behavior, and immunity 2015;43():110-7

Chronic Antipsychotic Treatment in the Rat - Effects on Brain Interleukin-8 and Kynurenic Acid
Larsson Mk, Schwieler L, Goiny M, Erhardt S, Engberg G
International journal of tryptophan research : IJTR 2015;8():49-52

Increased levels of IL-6 in the cerebrospinal fluid of patients with chronic schizophrenia--significance for activation of the kynurenine pathway
Schwieler L, Larsson Mk, Skogh E, Kegel Me, Orhan F, Abdelmoaty S, et al
Journal of psychiatry & neuroscience : JPN 2015;40(2):126-33

Low IL-8 is associated with anxiety in suicidal patients: genetic variation and decreased protein levels
Janelidze S, Suchankova P, Ekman A, Erhardt S, Sellgren C, Samuelsson M, et al
Acta psychiatrica Scandinavica 2015;131(4):269-78

[New findings about schizophrenia can provide new diagnostics and treatment]
Schalling M, Engberg G, Andreassen O, Erhardt S, Cunningham J, Agartz I, et al
Lakartidningen 2015;112():-

The role of inflammation in suicidal behaviour
Brundin L, Erhardt S, Bryleva Ey, Achtyes Ed, Postolache Tt
Acta psychiatrica Scandinavica 2015;132(3):192-203

Behavioral disturbances in adult mice following neonatal virus infection or kynurenine treatment--role of brain kynurenic acid
Liu Xc, Holtze M, Powell Sb, Terrando N, Larsson Mk, Persson A, et al
Brain, behavior, and immunity 2014;36():80-9

Imbalanced kynurenine pathway in schizophrenia
Kegel Me, Bhat M, Skogh E, Samuelsson M, Lundberg K, Dahl Ml, et al
International journal of tryptophan research : IJTR 2014;7():15-22

Kynurenic Acid levels in cerebrospinal fluid from patients with Alzheimer's disease or dementia with lewy bodies
Wennström M, Nielsen Hm, Orhan F, Londos E, Minthon L, Erhardt S
International journal of tryptophan research : IJTR 2014;7():1-7

Skeletal muscle PGC-1α1 modulates kynurenine metabolism and mediates resilience to stress-induced depression
Agudelo Lz, Femenía T, Orhan F, Porsmyr-palmertz M, Goiny M, Martinez-redondo V, et al
Cell 2014;159(1):33-45

The KMO allele encoding Arg452 is associated with psychotic features in bipolar disorder type 1, and with increased CSF KYNA level and reduced KMO expression
Lavebratt C, Olsson S, Backlund L, Frisén L, Sellgren C, Priebe L, et al
Molecular psychiatry 2014;19(3):334-41

Altered chemokine levels in the cerebrospinal fluid and plasma of suicide attempters
Janelidze S, Ventorp F, Erhardt S, Hansson O, Minthon L, Flax J, et al
Psychoneuroendocrinology 2013;38(6):853-62

Connecting inflammation with glutamate agonism in suicidality
Erhardt S, Lim Ck, Linderholm Kr, Janelidze S, Lindqvist D, Samuelsson M, et al
Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology 2013;38(5):743-52

CSF kynurenic acid and suicide risk in schizophrenia spectrum psychosis
Carlborg A, Jokinen J, Jönsson Eg, Erhardt S, Nordström P
Psychiatry research 2013;205(1-2):165-7

Cerebrospinal fluid kynurenic acid is associated with manic and psychotic features in patients with bipolar I disorder
Olsson Sk, Sellgren C, Engberg G, Landén M, Erhardt S
Bipolar disorders 2012;14(7):719-26

Increased levels of kynurenine and kynurenic acid in the CSF of patients with schizophrenia
Linderholm Kr, Skogh E, Olsson Sk, Dahl Ml, Holtze M, Engberg G, et al
Schizophrenia bulletin 2012;38(3):426-32

Kynurenine 3-monooxygenase polymorphisms: relevance for kynurenic acid synthesis in patients with schizophrenia and healthy controls
Holtze M, Saetre P, Engberg G, Schwieler L, Werge T, Andreassen Oa, et al
Journal of psychiatry & neuroscience : JPN 2012;37(1):53-7

Subchronic elevation of brain kynurenic acid augments amphetamine-induced locomotor response in mice
Olsson Sk, Larsson Mk, Erhardt S
Journal of neural transmission (Vienna, Austria : 1996) 2012;119(2):155-63

CSF biomarkers in suicide attempters--a principal component analysis
Lindqvist D, Janelidze S, Erhardt S, Träskman-bendz L, Engström G, Brundin L
Acta psychiatrica Scandinavica 2011;124(1):52-61

Elevation of cerebrospinal fluid interleukin-1ß in bipolar disorder
Söderlund J, Olsson Sk, Samuelsson M, Walther-jallow L, Johansson C, Erhardt S, et al
Journal of psychiatry & neuroscience : JPN 2011;36(2):114-8

Kynurenine 3-monooxygenase (KMO) polymorphisms in schizophrenia: An association study
Holtze M, Saetre P, Erhardt S, Schwieler L, Werge T, Hansen T, et al
SCHIZOPHRENIA RESEARCH 2011;127(1-3):270-2

Acyclovir inhibition of IDO to decrease Tregs as a glioblastoma treatment adjunct
Söderlund J, Erhardt S, Kast Re
Journal of neuroinflammation 2010;7():44-

Elevated levels of kynurenic acid in the cerebrospinal fluid of patients with bipolar disorder
Olsson Sk, Samuelsson M, Saetre P, Lindstrom L, Jonsson Eg, Nordin C, et al
JOURNAL OF PSYCHIATRY & NEUROSCIENCE 2010;35(3):195-9

Neonatal infection with neurotropic influenza A virus induces the kynurenine pathway in early life and disrupts sensorimotor gating in adult Tap1(-/-) mice
Asp L, Holtze M, Powell Sb, Karlsson H, Erhardt S
INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY 2010;13(4):475-85

Neonatal influenza A infection potentiates amphetamine induced increase in locomotor activity in the adult mouse
Holtze M, Asp L, Karlsson H, Erhardt S
EUROPEAN NEUROPSYCHOPHARMACOLOGY 2010;:S40-S40

Role of the NMDA-receptor in Prepulse Inhibition in the Rat
Linderholm K, Powell S, Olsson E, Holtze M, Snodgrass R, Erhardt S
International journal of tryptophan research : IJTR 2010;3():1-12

Activation of brain interleukin-1 beta in schizophrenia
Soderlund J, Schroder J, Nordin C, Samuelsson M, Walther-jallow L, Karlsson H, et al
MOLECULAR PSYCHIATRY 2009;14(12):1069-71

Do virus infections cause schizophrenia?
Karlsson H, Asp L, Ogren So, Erhardt S, Holtze M, Kristensson K, et al
EUROPEAN NEUROPSYCHOPHARMACOLOGY 2009;:S178-S178

Elevated levels of kynurenic acid change the dopaminergic response to amphetamine: implications for schizophrenia
Olsson Sk, Andersson As, Linderholm Kr, Holtze M, Nilsson-todd Lk, Schwieler L, et al
INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY 2009;12(4):501-12

Interleukin-6 Is Elevated in the Cerebrospinal Fluid of Suicide Attempters and Related to Symptom Severity
Lindqvist D, Janelidze S, Hagell P, Erhardt S, Samuelsson M, Minthon L, et al
BIOLOGICAL PSYCHIATRY 2009;66(3):287-92

Pharmacological Manipulation of Kynurenic Acid Potential in the Treatment of Psychiatric Disorders
Erhardt S, Olsson Sk, Engberg G
CNS DRUGS 2009;23(2):91-101

Clozapine interacts with the glycine site of the NMDA receptor: Electrophysiological studies of dopamine neurons in the rat ventral tegmental area
Schwieler L, Linderholm Kr, Nilsson-todd Lk, Erhardt S, Engberg G
LIFE SCIENCES 2008;83(5-6):170-5

Prenatal Dexamethasone Impairs Behavior and the Activation of the BDNF Exon IV Promoter in the Paraventricular Nucleus in Adult Offspring
Hossain A, Hajman K, Charitidi K, Erhardt S, Zimmermann U, Knipper M, et al
ENDOCRINOLOGY 2008;149(12):6356-65

Activation of rat ventral tegmental area dopamine neurons by endogenous kynurenic acid: A pharmacological analysis
Linderholm Kr, Andersson A, Olsson S, Olsson E, Snodgrass R, Engberg G, et al
NEUROPHARMACOLOGY 2007;53(8):918-24

Cerebrospinal fluid kynurenic acid in male and female controls - Correlation with monoamine metabolites and influences of confounding factors
Nilsson Lk, Nordin C, Jonsson Eg, Engberg G, Linderholm Kr, Erhardt S
JOURNAL OF PSYCHIATRIC RESEARCH 2007;41(1-2):144-51

Cerebrospinal fluid kynurenic acid in male patients with schizophrenia - correlation with monoamine metabolites
Nilsson-todd Lk, Nordin C, Jonsson Eg, Skogh E, Erhardt S
ACTA NEUROPSYCHIATRICA 2007;19(1):45-52

The kynurenic acid hypothesis of schizophrenia
Erhardt S, Schwieler L, Nilsson L, Linderholm K, Engberg G
PHYSIOLOGY & BEHAVIOR 2007;92(1-2):203-9

Changes in brain kynurenic acid levels alter the response of clozapine on midbrain dopamine neurons
Engberg G, Erhardt S, Linderholm K, Nilsson L, Schwieler L
NEUROPSYCHOPHARMACOLOGY 2006;:S126-S126

Changes in brain kynurenic acid levels alter the response of clozapine on midbrain dopamine neurons
Linderholm Kr, Erhardt S, Nilsson Lk, Schwieler L, Engberg G
NORDIC JOURNAL OF PSYCHIATRY 2006;60(4):334-334

Correlations between cerebrospinal fluid kynurenic acid and monoamine metabolites in male patients with schizophrenia
Erhardt S, Nordin C, Skogh E, Jonsson Eg, Nilsson Lk
EUROPEAN NEUROPSYCHOPHARMACOLOGY 2006;:S377-S377

Effects of COX-1 and COX-2 inhibitors on the firing of rat midbrain dopaminergic neurons - Possible involvement of endogenous kynurenic acid
Schwieler L, Erhardt S, Nilsson L, Linderholm K, Engberg G
SYNAPSE 2006;59(5):290-8

In situ produced 7-chlorokynurenic acid increase phasic activity of dopaminergic neurons in the rat ventral tegmental area
Andersson La, Linderholm Kr, Eggertson Cj, Schwarcz R, Engberg G, Erhardt S
NORDIC JOURNAL OF PSYCHIATRY 2006;60(4):328-329

Kynurenic acid in schizophrenia
Erhardt S
NORDIC JOURNAL OF PSYCHIATRY 2006;60(4):321-321

Role of endogenous kynurenic acid in the control of dopaminergic neurotransmission
Erhardt S, Schwieler L, Linderholm K, Nilsson L, Engberg G
NEUROPSYCHOPHARMACOLOGY 2006;:S45-S45

Subchronic treatment with kynurenine and probenecid: effects on prepulse inhibition and firing of midbrain dopamine neurons
Nilsson Lk, Linderholm Kr, Erhardt S
JOURNAL OF NEURAL TRANSMISSION 2006;113(5):557-71

The response of clozapine on midbrain dopamine neurons depends on endogenous concentration of kynurenic acid
Schwieler L, Linderholm Kr, Nilsson Lk, Engberg G, Erhardt S
EUROPEAN NEUROPSYCHOPHARMACOLOGY 2006;:S435-S436

Activation of noradrenergic locus coeruleus neurons by clozapine and haloperidol: involvement of glutamatergic mechanisms
Nilsson Lk, Schwieler L, Engberg G, Linderholm Kr, Erhardt S
INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY 2005;8(3):329-39

Elevated levels of kynurenic acid in the cerebrospinal fluid of male patients with schizophrenia
Nilsson Lk, Linderholm Kr, Engberg G, Paulson L, Blennow K, Lindstrom Lh, et al
SCHIZOPHRENIA RESEARCH 2005;80(2-3):315-22

Increased kynurenate in the brain of rats reared in social isolation.
Linderholm Kr, Erhardt S, Powell Sb, Nilsson Lk, Swerdlow N, Geyer Ma
NORDIC JOURNAL OF PSYCHIATRY 2005;59(5):414-414

Kynurenate tonically modulates midbrain dopamine neurons
Erhardt S, Schwieler L, Linderholm Kr, Nilsson Lk, Engberg G
NORDIC JOURNAL OF PSYCHIATRY 2005;59(5):409-409

Kynurenic acid levels in cerebrospinal fluid from schizophrenic patients.
Nilsson Lk, Linderholm Kr, Sedvall G, Engberg G, Erhardt S
NORDIC JOURNAL OF PSYCHIATRY 2005;59(5):416-417

Prostaglandin-mediated control of rat brain kynurenic acid synthesis - opposite actions by COX-1 and COX-2 isoforms
Schwieler L, Erhardt S, Erhardt C, Engberg G
JOURNAL OF NEURAL TRANSMISSION 2005;112(7):863-72

Rats reared in social isolation display disrupted ppi and elevated levels of kynurenic acid in the hippocampus
Erhardt S, Powell Sb, Nilsson Lk, Linderholm Kr, Swerdlow Nr, Geyer Ma
EUROPEAN NEUROPSYCHOPHARMACOLOGY 2005;:S34-S35

Rats reared in social isolation display disrupted PPI and elevated levels of kynurenic acid in the hippocampus
Erhardt S, Swerdlow Nr, Powell Sb, Nilsson Lk, Linderholm Kr, Geyer Ma
EUROPEAN NEUROPSYCHOPHARMACOLOGY 2005;:S320-S320

Clozapine affects noradrenergic locus coerulcus neurons via interactions with the NMDA receptor
Erhardt S, Nilsson Lk, Schwieler L, Engberg G
NORDIC JOURNAL OF PSYCHIATRY 2004;58(2):102-102

Clozapine modulates midbrain dopamine neuron firing via interaction with the NMDA receptor complex
Schwieler L, Engberg G, Erhardt S
SYNAPSE 2004;52(2):114-22

Elevation of the endogenous NMDA-receptor antagonist kynurenic acid disrupts prepulse inhibition
Erhardt S, Schwieler L, Geyer M
NORDIC JOURNAL OF PSYCHIATRY 2004;58(2):94-94

Endogenous kynurenic acid disrupts prepulse inhibition
Erhardt S, Schwieler L, Emanuelsson C, Geyer M
BIOLOGICAL PSYCHIATRY 2004;56(4):255-60

Prostaglandin-mediated control of rat brain kynurenic acid synthesis - opposite actions by COX-1 and COX-2 isoforms
Schwieler L, Erhardt S, Engberg G
NORDIC JOURNAL OF PSYCHIATRY 2004;58(2):106-107

Inhibitory action of clozapine on rat ventral tegmental area dopamine neurons following increased levels of endogenous kynurenic acid
Schwieler L, Erhardt S
NEUROPSYCHOPHARMACOLOGY 2003;28(10):1770-7

Kynurenic acid and schizophrenia
Erhardt S, Schwieler L, Engberg G
DEVELOPMENTS IN TRYPTOPHAN AND SEROTONIN METABOLISM 2003;:155-65

The anaesthetic agent propofol interacts with GABA(B)-receptors: an electrophysiological study in rat
Schwieler L, Delbro Ds, Engberg G, Erhardt S
LIFE SCIENCES 2003;72(24):2793-801

Excitatory and inhibitory responses of dopamine neurons in the ventral tegmental area to nicotine
Erhardt S, Schwieler L, Engberg L
SYNAPSE 2002;43(4):227-37

GABA(B) receptor-mediated modulation of the firing pattern of ventral tegmental area dopamine neurons in vivo
Erhardt S, Mathe Jm, Chergui K, Engberg G, Svensson Th
NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY 2002;365(3):173-80

Increased phasic activity of dopaminergic neurones in the rat ventral tegmental area following pharmacologically elevated levels of endogenous kynurenic acid
Erhardt S, Engberg G
ACTA PHYSIOLOGICA SCANDINAVICA 2002;175(1):45-53

Excitatory and inhibitory effects of nicotine on neuronal firing of A10 dopamine neurons are mediated via glutamate-and GABA-release, respectively
Erhardt S, Schwieler Lh, Engberg G
NORDIC JOURNAL OF PSYCHIATRY 2001;55(2):90-90

Kynurenic acid levels are elevated in the cerebrospinal fluid of patients with schizophrenia
Erhardt S, Blennow K, Nordin C, Skogh E, Lindstrom Lh, Engberg G
NEUROSCIENCE LETTERS 2001;313(1-2):96-8

Pharmacological elevation of endogenous kynurenic acid levels activates nigral dopamine neurons
Erhardt S, Oberg H, Mathe Jm, Engberg G
AMINO ACIDS 2001;20(4):353-62

Pharmacologically elevated levels of endogenous kynurenic acid prevent nicotine-induced activation of nigral dopamine neurons
Erhardt S, Oberg H, Engberg G
NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY 2001;363(1):21-7

The intravenous anesthetic agent propofol induces regularization of the firing pattern and prevents burst activity of nigral dopamine neurons via a GABAB-receptor agonistic action
Engberg G, Erhardt S, Schwieler Lh
NORDIC JOURNAL OF PSYCHIATRY 2001;55(2):89-89

Endogenous kynurenic acid blocks nicotine-induced activation of brain dopaminergic and noradrenergic neurons
Erhardt S, Engberg G
NORDIC JOURNAL OF PSYCHIATRY 2000;54(2):93-93

Excitation of nigral dopamine neurons by the GABA(A) receptor agonist muscimol is mediated via release of glutamate
Erhardt S, Engberg G
LIFE SCIENCES 2000;67(15):1901-11

Nicotine-induced excitation of locus coeruleus neurons is blocked by elevated levels of endogenous kynurenic acid
Erhardt S, Hajos M, Lindberg A, Engberg G
SYNAPSE 2000;37(2):104-8

Nicotine inhibits firing activity of dorsal raphe 5-HT neurones in vivo
Engberg G, Erhardt S, Sharp T, Hajos M
NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY 2000;362(1):41-5

Activation of nigral dopamine neurons by the selective GABA(B)-receptor antagonist SCH 50911
Erhardt S, Nissbrandt H, Engberg G
JOURNAL OF NEURAL TRANSMISSION 1999;106(5-6):383-94

Increased tiring rate and burst activity of nigral dopamine neurons by the gamma-butyric acid receptor antagonist SCH 50911
Erhardt S, Engberg G
NORDIC JOURNAL OF PSYCHIATRY 1999;53(2):110-110

gamma-hydroxybutyric acid inhibits firing rate and regularizes firing pattern of nigral dopamine neurons specifically by activation of gamma-aminobutyric acid beta-receptors
Erhardt S, Engberg G
NORDIC JOURNAL OF PSYCHIATRY 1998;52(2):135-135

Inhibition of firing rate and changes in the firing pattern of nigral dopamine neurons by gamma-hydroxybutyric acid (GHBA) are specifically induced by activation of GABA(B) receptors
Erhardt S, Andersson B, Nissbrandt H, Engberg G
NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY 1998;357(6):611-9

Oxytocin increases locus coeruleus alpha 2-adrenoreceptor responsiveness in rats
Petersson M, Uvnas-moberg K, Erhardt S, Engberg G
NEUROSCIENCE LETTERS 1998;255(2):115-8

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