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Ronald Lechan

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Karel Pacak; Josef T Prchal; Tamara Prodanov; Arthur S Tischler; Chunzhang Yang; Tito Fojo; Ivana Jochmanova; Ronald M Lechan; Maria J Merino; Zhengping Zhuang
New syndrome of paraganglioma and somatostatinoma associated with polycythemia.
Tatiana L Fonseca; Balázs Gereben; Ronald M Lechan; Magda Mora-Garzon; Cintia Bagne Ueta; Joao P Werneck-de-Castro; Gabor Wittmann; Alejandro Caicedo; Maira P O Campos; Mayrin Correa-Medina; Csaba Fekete; Rafael Arrojo e Drigo; Antonio C Bianco
Coordination of hypothalamic and pituitary T3 production regulates TSH expression.
Anna Sárvári; Györgyi Zséli; Erzsébet Farkas; Tamás Füzesi; Andrea Kádár; Ronald M Lechan; Csaba Fekete
Thyrotropin-releasing hormone-containing axons innervate histaminergic neurons in the tuberomammillary nucleus.

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2013: Karel Pacak; Josef T Prchal; Tamara Prodanov; Arthur S Tischler; Chunzhang Yang; Tito Fojo; Ivana Jochmanova; Ronald M Lechan; Maria J Merino; Zhengping Zhuang
New syndrome of paraganglioma and somatostatinoma associated with polycythemia.
Journal of clinical oncology : official journal of the American Society of Clinical Oncology 2013;31(13):1690-8.
2013: Tatiana L Fonseca; Balázs Gereben; Ronald M Lechan; Magda Mora-Garzon; Cintia Bagne Ueta; Joao P Werneck-de-Castro; Gabor Wittmann; Alejandro Caicedo; Maira P O Campos; Mayrin Correa-Medina; Csaba Fekete; Rafael Arrojo e Drigo; Antonio C Bianco
Coordination of hypothalamic and pituitary T3 production regulates TSH expression.
The Journal of clinical investigation 2013;123(4):1492-500.
2012: Anna Sárvári; Györgyi Zséli; Erzsébet Farkas; Tamás Füzesi; Andrea Kádár; Ronald M Lechan; Csaba Fekete
Thyrotropin-releasing hormone-containing axons innervate histaminergic neurons in the tuberomammillary nucleus.
Brain research 2012;1488():72-80.
2012: Csaba Fekete; T Füzesi; A Kádár; Praful Singru; Gábor Wittmann; G Zséli; W El-Bermani; Ronald M Lechan
Activation of anorexigenic pro-opiomelanocortin neurones during refeeding is independent of vagal and brainstem inputs.
Journal of neuroendocrinology 2012;24(11):1423-31.
2012: Praful Singru; Gábor Wittmann; Györgyi Zséli; Erzsébet Farkas; Csaba Fekete; Ronald M Lechan
Refeeding-activated glutamatergic neurons in the hypothalamic paraventricular nucleus (PVN) mediate effects of melanocortin signaling in the nucleus tractus solitarius (NTS).
Endocrinology 2012;153(8):3804-14.
2012: Imre Kalló; Ronald M Lechan; Zsolt Liposits; Petra Mohácsik; Miklós Palkovits; Barbara Vida; Ann Marie Zavacki; Anikó Zeöld; Rafael Arrojo E Drigo; Zsuzsanna Bardóczi; László Barna; Antonio Bianco; Beáta A Borsay; Liping Dong; Erzsébet Farkas; Csaba Fekete; László Herczeg; Erik Hrabovszky; Andrea Kádár; Balázs Gereben
A novel pathway regulates thyroid hormone availability in rat and human hypothalamic neurosecretory neurons.
PloS one 2012;7(6):e37860.
2011: Alessandro Marsili; Edith Sanchez; Praful Singru; Ann Marie Zavacki; John W Harney; Ronald M Lechan; P Reed Larsen
Thyroxine-induced expression of pyroglutamyl peptidase II and inhibition of TSH release precedes suppression of TRH mRNA and requires type 2 deiodinase.
The Journal of endocrinology 2011;211(1):73-8.
2010: Matthew L Rosene; Gábor Wittmann; Rafael Arrojo e Drigo; Praful S Singru; Ronald M Lechan; Antonio Bianco
Inhibition of the type 2 iodothyronine deiodinase underlies the elevated plasma TSH associated with amiodarone treatment.
Endocrinology 2010;151(12):5961-70.
2010: Andrea Kádár; Edith Sánchez; Gábor Wittmann; Praful Singru; Tamás Füzesi; Alessandro Marsili; P Reed Larsen; Zsolt Liposits; Ronald M Lechan; Csaba Fekete
Distribution of hypophysiotropic thyrotropin-releasing hormone (TRH)-synthesizing neurons in the hypothalamic paraventricular nucleus of the mouse.
The Journal of comparative neurology 2010;518(19):3948-61.
2010: Edith Sánchez; Praful Singru; Gábor Wittmann; Shira S Nouriel; Perry Barrett; Csaba Fekete; Ronald M Lechan
Contribution of TNF-alpha and nuclear factor-kappaB signaling to type 2 iodothyronine deiodinase activation in the mediobasal hypothalamus after lipopolysaccharide administration.
Endocrinology 2010;151(8):3827-35.
2010: Beatriz C G Freitas; Balázs Gereben; Melany Castillo; Imre Kalló; Anikó Zeöld; Péter Egri; Zsolt Liposits; Ann Marie Zavacki; Rui M B Maciel; Sungro Jo; Praful Singru; Edith Sanchez; Ronald M Lechan; Antonio Bianco
Paracrine signaling by glial cell-derived triiodothyronine activates neuronal gene expression in the rodent brain and human cells.
The Journal of clinical investigation 2010;120(6):2206-17.
2009: Gábor Wittmann; Tamás Füzesi; Zsolt Liposits; Ronald M Lechan; Csaba Fekete
Distribution and axonal projections of neurons coexpressing thyrotropin-releasing hormone and urocortin 3 in the rat brain.
The Journal of comparative neurology 2009;517(6):825-40.
2009: Olga V Danilova; Albert K Tai; Deanna A Mele; Martin Beinborn; Andrew B Leiter; Andrew S Greenberg; James W Perfield; Jason Defuria; Praful Singru; Ronald M Lechan; Brigitte T Huber
Neurogenin 3-specific dipeptidyl peptidase-2 deficiency causes impaired glucose tolerance, insulin resistance, and visceral obesity.
Endocrinology 2009;150(12):5240-8.
2009: Tamás Füzesi; Gábor Wittmann; Ronald M Lechan; Zsolt Liposits; Csaba Fekete
Noradrenergic innervation of hypophysiotropic thyrotropin-releasing hormone-synthesizing neurons in rats.
Brain research 2009;1294():38-44.
2009: Gábor Wittmann; Tamás Füzesi; Praful Singru; Zsolt Liposits; Ronald M Lechan; Csaba Fekete
Efferent projections of thyrotropin-releasing hormone-synthesizing neurons residing in the anterior parvocellular subdivision of the hypothalamic paraventricular nucleus.
The Journal of comparative neurology 2009;515(3):313-30.
2009: Edith Sánchez; Miguel Angel Vargas; Praful S Singru; Isel Pascual; Fidelia Romero; Csaba Fekete; Jean-Louis Charli; Ronald M Lechan
Tanycyte pyroglutamyl peptidase II contributes to regulation of the hypothalamic-pituitary-thyroid axis through glial-axonal associations in the median eminence.
Endocrinology 2009;150(5):2283-91.
2009: Levente Deli; Gábor Wittmann; Imre Kalló; Ronald M Lechan; Masahiko Watanabe; Zsolt Liposits; Csaba Fekete
Type 1 cannabinoid receptor-containing axons innervate hypophysiotropic thyrotropin-releasing hormone-synthesizing neurons.
Endocrinology 2009;150(1):98-103.
2008: Ronald M Lechan
The dilemma of the nonthyroidal illness syndrome.
Acta bio-medica : Atenei Parmensis 2008;79(3):165-71.
2008: Praful Singru; Minakshi Mazumdar; Vikas Barsagade; Ronald M Lechan; Lars Thim; Jes Thorn Clausen; Nishikant K Subhedar
Association of cocaine- and amphetamine-regulated transcript and neuropeptide Y in the forebrain and pituitary of the catfish, Clarias batrachus: a double immunofluorescent labeling study.
Journal of chemical neuroanatomy 2008;36(3-4):239-50.
2008: T Füzesi; E Sánchez; Gábor Wittmann; Praful Singru; Csaba Fekete; Ronald M Lechan
Regulation of cocaine- and amphetamine-regulated transcript-synthesising neurons of the hypothalamic paraventricular nucleus by endotoxin; implications for lipopolysaccharide-induced regulation of energy homeostasis.
Journal of neuroendocrinology 2008;20(9):1058-66.
2008: Edith Sánchez; Praful Singru; Runa Acharya; Monica Bodria; Csaba Fekete; Ann Marie Zavacki; Antonio Bianco; Ronald M Lechan
Differential effects of refeeding on melanocortin-responsive neurons in the hypothalamic paraventricular nucleus.
Endocrinology 2008;149(9):4329-35.
2008: Edith Sánchez; Praful Singru; Csaba Fekete; Ronald M Lechan
Induction of type 2 iodothyronine deiodinase in the mediobasal hypothalamus by bacterial lipopolysaccharide: role of corticosterone.
Endocrinology 2008;149(5):2484-93.
2008: Praful Singru; Edith Sánchez; Runa Acharya; Csaba Fekete; Ronald M Lechan
Mitogen-activated protein kinase contributes to lipopolysaccharide-induced activation of corticotropin-releasing hormone synthesizing neurons in the hypothalamic paraventricular nucleus.
Endocrinology 2008;149(5):2283-92.
2008: Manoj P Dandekar; Praful Singru; Dadasaheb M Kokare; Ronald M Lechan; Lars Thim; Jes Thorn Clausen; Nishikant K Subhedar
Importance of cocaine- and amphetamine-regulated transcript peptide in the central nucleus of amygdala in anxiogenic responses induced by ethanol withdrawal.
Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology 2008;33(5):1127-36.
2007: Tamás Füzesi; Gábor Wittmann; Zsolt Liposits; Ronald M Lechan; Csaba Fekete
Contribution of noradrenergic and adrenergic cell groups of the brainstem and agouti-related protein-synthesizing neurons of the arcuate nucleus to neuropeptide-y innervation of corticotropin-releasing hormone neurons in hypothalamic paraventricular nucleus of the rat.
Endocrinology 2007;148(11):5442-50.
2007: Csaba Fekete; Beatriz C G Freitas; Anikó Zeöld; Gábor Wittmann; Andrea Kádár; Zsolt Liposits; Marcelo A Christoffolete; Praful Singru; Ronald M Lechan; Antonio Bianco; Balázs Gereben
Expression patterns of WSB-1 and USP-33 underlie cell-specific posttranslational control of type 2 deiodinase in the rat brain.
Endocrinology 2007;148(10):4865-74.
2007: Judit Menyhért; Gábor Wittmann; Ronald M Lechan; Eva Keller; Zsolt Liposits; Csaba Fekete
Cocaine- and amphetamine-regulated transcript (CART) is colocalized with the orexigenic neuropeptide Y and agouti-related protein and absent from the anorexigenic alpha-melanocyte-stimulating hormone neurons in the infundibular nucleus of the human hypothalamus.
Endocrinology 2007;148(9):4276-81.
2007: Csaba Fekete; Ronald M Lechan
Negative feedback regulation of hypophysiotropic thyrotropin-releasing hormone (TRH) synthesizing neurons: role of neuronal afferents and type 2 deiodinase.
Frontiers in neuroendocrinology 2007;28(2-3):97-114.
2007: Simone Magagnin Wajner; Márcia dos Santos Wagner; Rossana C N Melo; Gleydes G Parreira; Hélio Chiarini-Garcia; Antonio Bianco; Csaba Fekete; Edith Sanchez; Ronald M Lechan; Ana Luiza Maia
Type 2 iodothyronine deiodinase is highly expressed in germ cells of adult rat testis.
The Journal of endocrinology 2007;194(1):47-54.
2007: Praful Singru; Minakshi Mazumdar; Amul J. Sakharkar; Ronald M Lechan; Lars Thim; Jes Thorn Clausen; Nishikant K Subhedar
Immunohistochemical localization of cocaine- and amphetamine-regulated transcript peptide in the brain of the catfish, Clarias batrachus (Linn.).
The Journal of comparative neurology 2007;502(2):215-35.
2007: Edith Sánchez; Csaba Fekete; Ronald M Lechan; Patricia Joseph-Bravo
Cocaine- and amphetamine-regulated transcript (CART) expression is differentially regulated in the hypothalamic paraventricular nucleus of lactating rats exposed to suckling or cold stimulation.
Brain research 2007;1132(1):120-8.
2007: Praful Singru; Edith Sánchez; Csaba Fekete; Ronald M Lechan
Importance of melanocortin signaling in refeeding-induced neuronal activation and satiety.
Endocrinology 2007;148(2):638-46.
2007: Ronald M Lechan; Csaba Fekete
Infundibular tanycytes as modulators of neuroendocrine function: hypothetical role in the regulation of the thyroid and gonadal axis.
Acta bio-medica : Atenei Parmensis 2007;78 Suppl 1():84-98.
2007: Lisa M Neff; Michelle Weil; Alan Cole; Thomas R Hedges; William Shucart; Donald Lawrence; Jay-Jiguang Zhu; Arthur S Tischler; Ronald M Lechan
Temozolomide in the treatment of an invasive prolactinoma resistant to dopamine agonists.
Pituitary 2007;10(1):81-6.
2006: Ronald M Lechan; Csaba Fekete
Central mechanisms for thyroid hormone regulation.
The American journal of psychiatry 2006;163(9):1492.
2006: Csaba Fekete; Ronald M Lechan
Neuroendocrine implications for the association between cocaine- and amphetamine regulated transcript (CART) and hypophysiotropic thyrotropin-releasing hormone (TRH).
Peptides 2006;27(8):2012-8.
2006: Marcelo A Christoffolete; Rogério Ribeiro; Praful Singru; Csaba Fekete; Wagner S da-Silva; David F Gordon; Stephen A Huang; Alessandra Crescenzi; John W Harney; E Chester Ridgway; P Reed Larsen; Ronald M Lechan; Antonio Bianco
Atypical expression of type 2 iodothyronine deiodinase in thyrotrophs explains the thyroxine-mediated pituitary thyrotropin feedback mechanism.
Endocrinology 2006;147(4):1735-43.
2006: Ronald M Lechan; Csaba Fekete
Role of melanocortin signaling in the regulation of the hypothalamic-pituitary-thyroid (HPT) axis.
Peptides 2006;27(2):310-25.
2006: Ronald M Lechan; Csaba Fekete
The TRH neuron: a hypothalamic integrator of energy metabolism.
Progress in brain research 2006;153():209-35.
2006: Csaba Fekete; Praful Singru; Edith Sanchez; Sumit Sarkar; Marcelo A Christoffolete; Rogerio S Riberio; William M Rand; Charles H Emerson; Antonio Bianco; Ronald M Lechan
Differential effects of central leptin, insulin, or glucose administration during fasting on the hypothalamic-pituitary-thyroid axis and feeding-related neurons in the arcuate nucleus.
Endocrinology 2006;147(1):520-9.
2005: Praful Singru; Csaba Fekete; Ronald M Lechan
Neuroanatomical evidence for participation of the hypothalamic dorsomedial nucleus (DMN) in regulation of the hypothalamic paraventricular nucleus (PVN) by alpha-melanocyte stimulating hormone.
Brain research 2005;1064(1-2):42-51.
2005: Csaba Fekete; Sumit Sarkar; Marcelo A Christoffolete; Charles H Emerson; Antonio Bianco; Ronald M Lechan
Bacterial lipopolysaccharide (LPS)-induced type 2 iodothyronine deiodinase (D2) activation in the mediobasal hypothalamus (MBH) is independent of the LPS-induced fall in serum thyroid hormone levels.
Brain research 2005;1056(1):97-9.
2005: Ronald M Lechan; Csaba Fekete
Role of thyroid hormone deiodination in the hypothalamus.
Thyroid : official journal of the American Thyroid Association 2005;15(8):883-97.
2005: Gábor Wittmann; Zsolt Liposits; Ronald M Lechan; Csaba Fekete
Origin of cocaine- and amphetamine-regulated transcript-containing axons innervating hypophysiotropic corticotropin-releasing hormone-synthesizing neurons in the rat.
Endocrinology 2005;146(7):2985-91.
2005: Gábor Wittmann; Ronald M Lechan; Zsolt Liposits; Csaba Fekete
Glutamatergic innervation of corticotropin-releasing hormone- and thyrotropin-releasing hormone-synthesizing neurons in the hypothalamic paraventricular nucleus of the rat.
Brain research 2005;1039(1-2):53-62.
2005: Csaba Fekete; Praful Singru; Sumit Sarkar; William M Rand; Ronald M Lechan
Ascending brainstem pathways are not involved in lipopolysaccharide-induced suppression of thyrotropin-releasing hormone gene expression in the hypothalamic paraventricular nucleus.
Endocrinology 2005;146(3):1357-63.
2005: Csaba Fekete; Sumit Sarkar; Ronald M Lechan
Relative contribution of brainstem afferents to the cocaine- and amphetamine-regulated transcript (CART) innervation of thyrotropin-releasing hormone synthesizing neurons in the hypothalamic paraventricular nucleus (PVN).
Brain research 2005;1032(1-2):171-5.
2004: Csaba Fekete; Daniel L Marks; Sumit Sarkar; Charles H Emerson; William M Rand; Roger D Cone; Ronald M Lechan
Effect of Agouti-related protein in regulation of the hypothalamic-pituitary-thyroid axis in the melanocortin 4 receptor knockout mouse.
Endocrinology 2004;145(11):4816-21.
2004: Gábor Wittmann; Zsolt Liposits; Ronald M Lechan; Csaba Fekete
Medullary adrenergic neurons contribute to the cocaine- and amphetamine-regulated transcript-immunoreactive innervation of thyrotropin-releasing hormone synthesizing neurons in the hypothalamic paraventricular nucleus.
Brain research 2004;1006(1):1-7.
2004: Stefanos Raptis; Csaba Fekete; Sumit Sarkar; William M Rand; Charles H Emerson; György Nagy; Ronald M Lechan
Cocaine- and amphetamine-regulated transcript co-contained in thyrotropin-releasing hormone (TRH) neurons of the hypothalamic paraventricular nucleus modulates TRH-induced prolactin secretion.
Endocrinology 2004;145(4):1695-9.
2004: Csaba Fekete; Balázs Gereben; Marton Doleschall; John W Harney; José Miguel Dora; Antonio Bianco; Sumit Sarkar; Zsolt Liposits; William Rand; Charles Emerson; Imre Kacskovics; P Reed Larsen; Ronald M Lechan
Lipopolysaccharide induces type 2 iodothyronine deiodinase in the mediobasal hypothalamus: implications for the nonthyroidal illness syndrome.
Endocrinology 2004;145(4):1649-55.
2004: Gábor Wittmann; Sumit Sarkar; Erik Hrabovszky; Zsolt Liposits; Ronald M Lechan; Csaba Fekete
Galanin- but not galanin-like peptide-containing axon terminals innervate hypophysiotropic TRH-synthesizing neurons in the hypothalamic paraventricular nucleus.
Brain research 2004;1002(1-2):43-50.
2004: Sumit Sarkar; Gábor Wittmann; Csaba Fekete; Ronald M Lechan
Central administration of cocaine- and amphetamine-regulated transcript increases phosphorylation of cAMP response element binding protein in corticotropin-releasing hormone-producing neurons but not in prothyrotropin-releasing hormone-producing neurons in the hypothalamic paraventricular nucleus.
Brain research 2004;999(2):181-92.
2004: Csaba Fekete; Gábor Wittmann; Zsolt Liposits; Ronald M Lechan
Origin of cocaine- and amphetamine-regulated transcript (CART)-immunoreactive innervation of the hypothalamic paraventricular nucleus.
The Journal of comparative neurology 2004;469(3):340-50.
2004: Ronald M Lechan; Csaba Fekete
Feedback regulation of thyrotropin-releasing hormone (TRH): mechanisms for the non-thyroidal illness syndrome.
Journal of endocrinological investigation 2004;27(6 Suppl):105-19.
2003: Roman Schumann; Nandini Joseph; Luis Zabala; Steven D Schwaitzberg; Ronald M Lechan
Hypertensive crisis inducing rhabdomyolysis during laparoscopic resection of a large pheochromocytoma: a case report.
Journal of clinical anesthesia 2003;15(7):540-4.
2003: Sumit Sarkar; Csaba Fekete; Gábor Légrádi; Ronald M Lechan
Glucagon like peptide-1 (7-36) amide (GLP-1) nerve terminals densely innervate corticotropin-releasing hormone neurons in the hypothalamic paraventricular nucleus.
Brain research 2003;985(2):163-8.
2003: Sumit Sarkar; Ronald M Lechan
Central administration of neuropeptide Y reduces alpha-melanocyte-stimulating hormone-induced cyclic adenosine 5'-monophosphate response element binding protein (CREB) phosphorylation in pro-thyrotropin-releasing hormone neurons and increases CREB phosphorylation in corticotropin-releasing hormone neurons in the hypothalamic paraventricular nucleus.
Endocrinology 2003;144(1):281-91.
2002: Csaba Fekete; Gábor Wittmann; Zsolt Liposits; Ronald M Lechan
GABA-ergic innervation of thyrotropin-releasing hormone-synthesizing neurons in the hypothalamic paraventricular nucleus of the rat.
Brain research 2002;957(2):251-8.
2002: Csaba Fekete; Sumit Sarkar; William M Rand; John W Harney; Charles H Emerson; Antonio Bianco; Annette G Beck-Sickinger; Ronald M Lechan
Neuropeptide Y1 and Y5 receptors mediate the effects of neuropeptide Y on the hypothalamic-pituitary-thyroid axis.
Endocrinology 2002;143(12):4513-9.
2002: Csaba Fekete; Sumit Sarkar; William M Rand; John W Harney; Charles H Emerson; Antonio Bianco; Ronald M Lechan
Agouti-related protein (AGRP) has a central inhibitory action on the hypothalamic-pituitary-thyroid (HPT) axis; comparisons between the effect of AGRP and neuropeptide Y on energy homeostasis and the HPT axis.
Endocrinology 2002;143(10):3846-53.
2002: Seung Hahm; Csaba Fekete; Tooru M Mizuno; Joan Windsor; Hai Yan; Carol N Boozer; Charlotte Lee; Joel K Elmquist; Ronald M Lechan; Charles V Mobbs; Stephen R J Salton
VGF is required for obesity induced by diet, gold thioglucose treatment, and agouti and is differentially regulated in pro-opiomelanocortin- and neuropeptide Y-containing arcuate neurons in response to fasting.
The Journal of neuroscience : the official journal of the Society for Neuroscience 2002;22(16):6929-38.
2002: Sumit Sarkar; Gábor Légrádi; Ronald M Lechan
Intracerebroventricular administration of alpha-melanocyte stimulating hormone increases phosphorylation of CREB in TRH- and CRH-producing neurons of the hypothalamic paraventricular nucleus.
Brain research 2002;945(1):50-9.
2002: Gábor Wittmann; Zsolt Liposits; Ronald M Lechan; Csaba Fekete
Medullary adrenergic neurons contribute to the neuropeptide Y-ergic innervation of hypophysiotropic thyrotropin-releasing hormone-synthesizing neurons in the rat.
Neuroscience letters 2002;324(1):69-73.
2002: Emese Mihály; Csaba Fekete; Ronald M Lechan; Zsolt Liposits
Corticotropin-releasing hormone-synthesizing neurons of the human hypothalamus receive neuropeptide Y-immunoreactive innervation from neurons residing primarily outside the infundibular nucleus.
The Journal of comparative neurology 2002;446(3):235-43.
2002: Eduardo A Nillni; Alison Lee; Gabor Legradi; Ronald M Lechan
Effect of precipitated morphine withdrawal on post-translational processing of prothyrotropin releasing hormone (proTRH) in the ventrolateral column of the midbrain periaqueductal gray.
Journal of neurochemistry 2002;80(5):874-84.
2001: E Mihaly; Gabor Legradi; C Fekete; Ronald M Lechan
Efferent projections of ProTRH neurons in the ventrolateral periaqueductal gray.
Brain research 2001;919(2):185-97.
2001: Ronald M Lechan; Jeffrey B Tatro
Hypothalamic melanocortin signaling in cachexia.
Endocrinology 2001;142(8):3288-91.
2001: R Peeters; C Fekete; Carla Goncalves; Gabor Legradi; HM Tu; John W Harney; Antonio Bianco; Ronald M Lechan; P Reed Larsen
Regional physiological adaptation of the central nervous system deiodinases to iodine deficiency.
American journal of physiology. Endocrinology and metabolism 2001;281(1):E54-61.
2001: LG Luo; S L Lee; Ronald M Lechan; IM Jackson
Effect of preproTRH antisense on thyrotropin-releasing hormone synthesis and viability of cultured rat diencephalic neurons.
Endocrine 2001;15(1):79-85.
2001: Csaba Fekete; J Kelly; Emese Mihály; Sumit Sarkar; William M Rand; Gábor Légrádi; Charles H Emerson; Ronald M Lechan
Neuropeptide Y has a central inhibitory action on the hypothalamic-pituitary-thyroid axis.
Endocrinology 2001;142(6):2606-13.
2001: Emese Mihály; Csaba Fekete; Gábor Légrádi; Ronald M Lechan
Hypothalamic dorsomedial nucleus neurons innervate thyrotropin-releasing hormone-synthesizing neurons in the paraventricular nucleus.
Brain research 2001;891(1-2):20-31.
2000: Csaba Fekete; Emese Mihály; LG Luo; J Kelly; Jes Thorn Clausen; Q Mao; William M Rand; L G Moss; Michael J Kuhar; Charles H Emerson; IM Jackson; Ronald M Lechan
Association of cocaine- and amphetamine-regulated transcript-immunoreactive elements with thyrotropin-releasing hormone-synthesizing neurons in the hypothalamic paraventricular nucleus and its role in the regulation of the hypothalamic-pituitary-thyroid axis during fasting.
The Journal of neuroscience : the official journal of the Society for Neuroscience 2000;20(24):9224-34.
2000: Csaba Fekete; Gábor Légrádi; Emese Mihály; Jeffrey B Tatro; William M Rand; Ronald M Lechan
alpha-Melanocyte stimulating hormone prevents fasting-induced suppression of corticotropin-releasing hormone gene expression in the rat hypothalamic paraventricular nucleus.
Neuroscience letters 2000;289(2):152-6.
2000: Emese Mihály; Csaba Fekete; Jeffrey B Tatro; Zsolt Liposits; Edward G Stopa; Ronald M Lechan
Hypophysiotropic thyrotropin-releasing hormone-synthesizing neurons in the human hypothalamus are innervated by neuropeptide Y, agouti-related protein, and alpha-melanocyte-stimulating hormone.
The Journal of clinical endocrinology and metabolism 2000;85(7):2596-603.
2000: Csaba Fekete; Emese Mihály; S Herscovici; J Salas; H Tu; P Reed Larsen; Ronald M Lechan
DARPP-32 and CREB are present in type 2 iodothyronine deiodinase-producing tanycytes: implications for the regulation of type 2 deiodinase activity.
Brain research 2000;862(1-2):154-61.
2000: Csaba Fekete; Gábor Légrádi; Emese Mihály; QH Huang; Jeffrey B Tatro; William M Rand; Charles H Emerson; Ronald M Lechan
alpha-Melanocyte-stimulating hormone is contained in nerve terminals innervating thyrotropin-releasing hormone-synthesizing neurons in the hypothalamic paraventricular nucleus and prevents fasting-induced suppression of prothyrotropin-releasing hormone gene expression.
The Journal of neuroscience : the official journal of the Society for Neuroscience 2000;20(4):1550-8.
1999: Gábor Légrádi; Ronald M Lechan
Agouti-related protein containing nerve terminals innervate thyrotropin-releasing hormone neurons in the hypothalamic paraventricular nucleus.
Endocrinology 1999;140(8):3643-52.
1999: HM Tu; Gabor Legradi; T Bartha; Domenico Salvatore; Ronald M Lechan; P Reed Larsen
Regional expression of the type 3 iodothyronine deiodinase messenger ribonucleic acid in the rat central nervous system and its regulation by thyroid hormone.
Endocrinology 1999;140(2):784-90.
1998: Gabor Legradi; C H Emerson; Rexford S Ahima; W M Rand; Jeffrey S Flier; Ronald M Lechan
Arcuate nucleus ablation prevents fasting-induced suppression of ProTRH mRNA in the hypothalamic paraventricular nucleus.
Neuroendocrinology 1998;68(2):89-97.
1998: Gábor Légrádi; Ronald M Lechan
The arcuate nucleus is the major source for neuropeptide Y-innervation of thyrotropin-releasing hormone neurons in the hypothalamic paraventricular nucleus.
Endocrinology 1998;139(7):3262-70.
1998: Gábor Légrádi; Jens Hannibal; Ronald M Lechan
Pituitary adenylate cyclase-activating polypeptide-nerve terminals densely innervate corticotropin-releasing hormone-neurons in the hypothalamic paraventricular nucleus of the rat.
Neuroscience letters 1998;246(3):145-8.
1997: Gábor Légrádi; Jens Hannibal; Ronald M Lechan
Association between pituitary adenylate cyclase-activating polypeptide and thyrotropin-releasing hormone in the rat hypothalamus.
Journal of chemical neuroanatomy 1997;13(4):265-79.
1997: Gábor Légrádi; D Holzer; L P Kapcala; Ronald M Lechan
Glucocorticoids inhibit stress-induced phosphorylation of CREB in corticotropin-releasing hormone neurons of the hypothalamic paraventricular nucleus.
Neuroendocrinology 1997;66(2):86-97.
1997: HM Tu; S W Kim; Domenico Salvatore; T Bartha; Gabor Legradi; P Reed Larsen; Ronald M Lechan
Regional distribution of type 2 thyroxine deiodinase messenger ribonucleic acid in rat hypothalamus and pituitary and its regulation by thyroid hormone.
Endocrinology 1997;138(8):3359-68.
1997: Gábor Légrádi; Charles H Emerson; Rexford S Ahima; J S Flier; Ronald M Lechan
Leptin prevents fasting-induced suppression of prothyrotropin-releasing hormone messenger ribonucleic acid in neurons of the hypothalamic paraventricular nucleus.
Endocrinology 1997;138(6):2569-76.
1997: Naibedya Chattopadhyay; Gabor Legradi; Mei Bai; Olga Kifor; C Ye; Peter M Vassilev; Edward M Brown; Ronald M Lechan
Calcium-sensing receptor in the rat hippocampus: a developmental study.
Brain research. Developmental brain research 1997;100(1):13-21.
1997: S Brady; Ronald M Lechan; Steven D Schwaitzberg; Yogeshwar Dayal; J Ziar; Arthur S Tischler
Composite pheochromocytoma/ganglioneuroma of the adrenal gland associated with multiple endocrine neoplasia 2A: case report with immunohistochemical analysis.
The American journal of surgical pathology 1997;21(1):102-8.
1996: Gábor Légrádi; W M Rand; S Hitz; E A Nillni; I M Jackson; Ronald M Lechan
Opiate withdrawal increases ProTRH gene expression in the ventrolateral column of the midbrain periaqueductal gray.
Brain research 1996;729(1):10-19.
1996: L I Romero; I Kakucska; Ronald M Lechan; S Reichlin
Interleukin-6 (IL-6) is secreted from the brain after intracerebroventricular injection of IL-1 beta in rats.
The American journal of physiology 1996;270(3 Pt 2):R518-24.
1995: I Kakucska; Y Qi; Ronald M Lechan
Changes in adrenal status affect hypothalamic thyrotropin-releasing hormone gene expression in parallel with corticotropin-releasing hormone.
Endocrinology 1995;136(7):2795-802.
1995: Roberto Toni; S Mosca; F Ruggeri; Aurelio Valmori; G Orlandi; G Toni; Ronald M Lechan; P Vezzadini
Effect of hypothyroidism on vasoactive intestinal polypeptide-immunoreactive neurons in forebrain-neurohypophysial nuclei of the rat brain.
Brain research 1995;682(1-2):101-15.
1995: A Sugawara; Paul M Yen; Y Qi; Ronald M Lechan; William W Chin
Isoform-specific retinoid-X receptor (RXR) antibodies detect differential expression of RXR proteins in the pituitary gland.
Endocrinology 1995;136(4):1766-74.
1994: I Kakucska; L I Romero; B D Clark; Jan Rondeel; Y Qi; S Alex; C H Emerson; Ronald M Lechan
Suppression of thyrotropin-releasing hormone gene expression by interleukin-1-beta in the rat: implications for nonthyroidal illness.
Neuroendocrinology 1994;59(2):129-37.
1993: Roberto Toni; Ronald M Lechan
Neuroendocrine regulation of thyrotropin-releasing hormone (TRH) in the tuberoinfundibular system.
Journal of endocrinological investigation 1993;16(9):715-53.
1993: I Kakucska; Y Qi; B D Clark; Ronald M Lechan
Endotoxin-induced corticotropin-releasing hormone gene expression in the hypothalamic paraventricular nucleus is mediated centrally by interleukin-1.
Endocrinology 1993;133(2):815-21.
1993: L I Romero; G Schettini; Ronald M Lechan; C A Dinarello; S Reichlin
Bacterial lipopolysaccharide induction of IL-6 in rat telencephalic cells is mediated in part by IL-1.
Neuroendocrinology 1993;57(5):892-7.
1992: Roberto Toni; I Kakucska; S Mosca; P Marrama; Ronald M Lechan
Hypothyroidism increases vasoactive intestinal polypeptide (VIP) immunoreactivity and gene expression in the rat hypothalamic paraventricular nucleus.
Endocrinology 1992;131(2):976-8.
1992: I Kakucska; W Rand; Ronald M Lechan
Thyrotropin-releasing hormone gene expression in the hypothalamic paraventricular nucleus is dependent upon feedback regulation by both triiodothyronine and thyroxine.
Endocrinology 1992;130(5):2845-50.
1992: C B Cook; I Kakucska; Ronald M Lechan; Ronald J Koenig
Expression of thyroid hormone receptor beta 2 in rat hypothalamus.
Endocrinology 1992;130(2):1077-9.
1992: Ronald M Lechan; I Kakucska
Feedback regulation of thyrotropin-releasing hormone gene expression by thyroid hormone in the hypothalamic paraventricular nucleus.
Ciba Foundation symposium 1992;168():144-58; discussion 158-64.
1990: Roberto Toni; I M Jackson; Ronald M Lechan
Thyrotropin-releasing-hormone-immunoreactive innervation of thyrotropin-releasing-hormone-tuberoinfundibular neurons in rat hypothalamus: anatomical basis to suggest ultrashort feedback regulation.
Neuroendocrinology 1990;52(5):422-8.
1990: Roberto Toni; Ronald M Lechan
1-naphthol-pyronin B as a novel substrate for silver intensification: application to light and electron microscopic immunocytochemistry of neuroendocrine systems.
The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society 1990;38(8):1209-14.
1990: James I Koenig; K Snow; B D Clark; Roberto Toni; Joseph Cannon; A R Shaw; Charles A Dinarello; S Reichlin; S L Lee; Ronald M Lechan
Intrinsic pituitary interleukin-1 beta is induced by bacterial lipopolysaccharide.
Endocrinology 1990;126(6):3053-8.
1990: N P Sauter; Roberto Toni; C D McLaughlin; E M Dyess; J Kritzman; Ronald M Lechan
Isolated adrenocorticotropin deficiency associated with an autoantibody to a corticotroph antigen that is not adrenocorticotropin or other proopiomelanocortin-derived peptides.
The Journal of clinical endocrinology and metabolism 1990;70(5):1391-7.
1990: Roberto Toni; I M Jackson; Ronald M Lechan
Neuropeptide-Y-immunoreactive innervation of thyrotropin-releasing hormone-synthesizing neurons in the rat hypothalamic paraventricular nucleus.
Endocrinology 1990;126(5):2444-53.
1990: Ronald M Lechan; Roberto Toni; B D Clark; Joseph Cannon; A R Shaw; Charles A Dinarello; S Reichlin
Immunoreactive interleukin-1 beta localization in the rat forebrain.
Brain research 1990;514(1):135-40.
1990: Hyman M Schipper; Ronald M Lechan; S Reichlin
Glial peroxidase activity in the hypothalamic arcuate nucleus: effects of estradiol valerate-induced persistent estrus.
Brain research 1990;507(2):200-7.
1989: T P Segerson; K S Lam; L Cacicedo; N Minamitani; J S Fink; Ronald M Lechan; S Reichlin
Thyroid hormone regulates vasoactive intestinal peptide (VIP) mRNA levels in the rat anterior pituitary gland.
Endocrinology 1989;125(4):2221-3.
1989: K S Lam; Ronald M Lechan; N Minamitani; T P Segerson; S Reichlin
Vasoactive intestinal peptide in the anterior pituitary is increased in hypothyroidism.
Endocrinology 1989;124(2):1077-84.
1989: Ronald M Lechan; T P Segerson
Pro-TRH gene expression and precursor peptides in rat brain. Observations by hybridization analysis and immunocytochemistry.
Annals of the New York Academy of Sciences 1989;553():29-59.
1988: E M Dyess; T P Segerson; Zsolt Liposits; Willis Paull; M M Kaplan; P Wu; I M Jackson; Ronald M Lechan
Triiodothyronine exerts direct cell-specific regulation of thyrotropin-releasing hormone gene expression in the hypothalamic paraventricular nucleus.
Endocrinology 1988;123(5):2291-7.
1988: P Van den Bergh; P Wu; I M Jackson; Ronald M Lechan
Neurons containing a N-terminal sequence of the TRH-prohormone (preproTRH53-74) are present in a unique location of the midbrain periaqueductal gray of the rat.
Brain research 1988;461(1):53-63.
1987: Ronald M Lechan; P Wu; I M Jackson
Immunocytochemical distribution in rat brain of putative peptides derived from thyrotropin-releasing hormone prohormone.
Endocrinology 1987;121(5):1879-91.
1987: T P Segerson; J Kauer; H C Wolfe; H Mobtaker; P Wu; I M Jackson; Ronald M Lechan
Thyroid hormone regulates TRH biosynthesis in the paraventricular nucleus of the rat hypothalamus.
Science (New York, N.Y.) 1987;238(4823):78-80.
1987: T P Segerson; H Hoefler; H Childers; H J Wolfe; P Wu; I M Jackson; Ronald M Lechan
Localization of thyrotropin-releasing hormone prohormone messenger ribonucleic acid in rat brain in situ hybridization.
Endocrinology 1987;121(1):98-107.
1987: N Minamitani; T Minamitani; Ronald M Lechan; J Bollinger-Gruber; S Reichlin
Paraventricular nucleus mediates prolactin secretory responses to restraint stress, ether stress, and 5-hydroxy-L-tryptophan injection in the rat.
Endocrinology 1987;120(3):860-7.
1987: Zsolt Liposits; Willis Paull; P Wu; I M Jackson; Ronald M Lechan
Hypophysiotrophic thyrotropin releasing hormone (TRH) synthesizing neurons. Ultrastructure, adrenergic innervation and putative transmitter action.
Histochemistry 1987;88(1):1-10.