Nestled at the base of the diencephalon, the arcuate nucleus represents one of the central nervous system's most sophisticated integration centers, bridging systemic endocrinology with complex neurobehavioral networks. Positioned adjacent to the median eminence where the blood-brain barrier displays specialized fenestrations, this compact hypothalamic structure constantly surveys circulating hormones and metabolic substrates to dictate appetite, autonomic tone, and neuroendocrine output. Unraveling the cellular heterogeneity and neurocircuitry of the arcuate nucleus has redefined modern understanding of metabolic disease, reproductive endocrinology, and therapeutic pharmacology.
Arcuate Nucleus
1. Concise Definition
The arcuate nucleus (often abbreviated as ARC, and historically termed the infundibular nucleus in humans) is an aggregation of specialized neuroendocrine and neuromodulatory neurons situated in the mediobasal hypothalamus flanking the ventrolateral margins of the third ventricle. Functioning as the primary sensory organ of the central melanocortin system, it integrates peripheral afferent cues of energy availability—including leptin, insulin, and ghrelin—to modulate somatic growth, reproductive maturation, feeding behavior, and systemic energy expenditure.
Beyond its classical role as an appetite thermostat, the arcuate nucleus houses distinct sub-populations of neurosecretory cells that orchestrate pituitary hormone release via the hypophyseal portal system. Its primary neurochemical divisions consist of orexigenic neuropeptide Y (NPY) and agouti-related peptide (AgRP) co-expressing neurons, anorexigenic pro-opiomelanocortin (POMC) and cocaine- and amphetamine-regulated transcript (CART) neurons, tuberoinfundibular dopamine (TIDA) neurons controlling prolactin, growth hormone-releasing hormone (GHRH) cells, and kisspeptin, neurokinin B, and dynorphin (KNDy) neurons essential for reproductive pulsatility.
2. Etymology & Linguistic Origin
The term arcuate originates from the Classical Latin adjective arcuatus (or arquatus), meaning "bent like a bow," "curved," or "arched," derived from the noun arcus ("a bow" or "an arch"). Classical neuroanatomists assigned this descriptor due to the crescentic, bow-like anatomical conformation the cellular cluster adopts as it wraps around the floor of the third ventricle and skirts the hypophyseal stalk.
The word nucleus derives from the Latin nux (meaning "nut"), through its diminutive nucleus ("kernel" or "inner core"). In neuroanatomy, the designation reflects a functionally unified cytoarchitectonic grouping of neuronal cell bodies within the central nervous system. In human anatomical nomenclature codified by the Terminologia Anatomica, this nucleus is frequently referred to as the nucleus infundibularis (infundibular nucleus), tracing from the Latin infundibulum ("funnel"), corresponding to the funnel-shaped stalk linking the hypothalamus to the neurohypophysis.
3. Pronunciation & Grammatical Form
Pronunciation: Phonetically transcribed in the International Phonetic Alphabet (IPA) as /ˈɑːr.kju.ət ˈnjuː.kli.əs/ in British English and /ˈɑːr.kju.eɪt ˈnuː.kli.əs/ in American English.
Grammatical Category: Compound noun (neuter anatomical substantive). The plural form is arcuate nuclei (IPA: /ˈɑːr.kju.ət ˈnuː.kli.aɪ/). The adjectival form is arcuate, frequently deployed in syntactic constructions such as "arcuate circuit," "arcuate microenvironment," or "arcuate neurogenesis." In neuroendocrinology literature, the abbreviation ARC is conventionally used as a mass or proper noun denoting this specific hypothalamic structure.
4. Detailed Conceptual Explanation
The arcuate nucleus operates as an essential neurovascular metabolic interface within the mammalian central nervous system. Anatomically situated within the mediobasal hypothalamus, its ventral boundary abuts the median eminence, a classic circumventricular organ lacking the classic tight junctions characteristic of the blood-brain barrier. Specialized ependymal cells known as tanycytes line the ventrolateral wall of the third ventricle, deploying long basal processes that reach into the arcuate parenchyma and fenestrated capillary loops. This unique microvascular architecture provides arcuate perikarya with privileged, semi-direct exposure to systemic macromolecular signals—such as gut-derived peptides and adipokines—that are ordinarily restricted from entry into deeper cerebral regions.
The functional architecture of the ARC is organized around two mutually antagonistic neuronal ensembles that establish the "first-order" sensory tier of energy homeostasis. The first ensemble comprises neurons expressing Neuropeptide Y (NPY) and Agouti-Related Peptide (AgRP), which also synthesize the inhibitory neurotransmitter gamma-aminobutyric acid (GABA). Activation of NPY/AgRP neurons exerts an intense orexigenic drive, evoking voracious feeding behaviors while simultaneously suppressing energy expenditure through down-regulation of thermogenesis and metabolic rate. AgRP serves as an endogenous competitive antagonist and inverse agonist of melanocortin 3 and 4 receptors (MC3R/MC4R), directly counteracting satiety signaling.
Counterbalancing this drive is the adjacent population of anorexigenic neurons expressing Pro-opiomelanocortin (POMC) and Cocaine- and Amphetamine-Regulated Transcript (CART). Upon depolarization, POMC is enzymatically cleaved into alpha-melanocyte-stimulating hormone (α-MSH), a potent agonist at downstream MC4R and MC3R targets. Binding of α-MSH promotes satiety, activates the sympathetic nervous system, and elevates basal energy consumption. Intriguingly, NPY/AgRP neurons establish direct local monosynaptic inhibitory GABAergic inputs onto neighboring POMC perikarya, establishing an asymmetric local circuit wherein hunger signals intrinsically override satiety circuits during states of energy deprivation.
Beyond macronutrient and energy balancing, the arcuate nucleus contains multiple neuroendocrine ensembles vital for somatic maintenance and survival. Tuberoinfundibular dopamine (TIDA) neurons in the dorsomedial ARC project to the external zone of the median eminence, secreting dopamine into the hypophyseal portal vasculature to constitutively suppress the release of prolactin from anterior pituitary lactotrophs. Growth hormone-releasing hormone (GHRH) neurons located within the ventrolateral ARC regulate somatic cellular growth, protein synthesis, and lipid mobilization. Furthermore, kisspeptin-expressing neurons within the ARC (co-expressing neurokinin B and dynorphin, termed KNDy neurons) act as the definitive central pulse generator driving the episodic discharge of Gonadotropin-Releasing Hormone (GnRH), thereby coupling reproductive viability directly to baseline somatic energy reserves.
5. Historical Development
The morphological identification of the arcuate nucleus dates back to late nineteenth- and early twentieth-century German neuroanatomy. Pioneers including Franz Nissl, Alois Alzheimer, and later Christfried Jakob categorized the distinct cytoarchitectonic divisions of the human diencephalon, identifying a distinct crescent-shaped cluster of small- to medium-sized perikarya closely hugging the third ventricle. Early functional paradigms, dominated by lesions and transections, viewed the region primarily as an undifferentiated vegetative relay station coordinating autonomic reflexes.
A transformative leap occurred during the mid-twentieth century with the formulation of the neurosecretory hypothesis by Ernst and Berta Scharrer, and the subsequent characterization of hypothalamic hypophysiotropic hormones by Roger Guillemin and Andrew Schally in the late 1960s and 1970s. During this era, Geoffrey Harris established that the median eminence and infundibular region coordinate pituitary secretions through humoral delivery rather than direct synaptic innervation. Researchers demonstrated that the arcuate nucleus was the principal origin of hypothalamic dopamine reaching the anterior pituitary, resolving the identity of the elusive prolactin-inhibiting factor.
The molecular era of arcuate physiology was inaugurated in 1994 with the landmark cloning of the ob gene and the discovery of leptin by Jeffrey M. Friedman and colleagues at Rockefeller University. Subsequent mapping of the leptin receptor (LepRb) confirmed its densest central expression within the arcuate nucleus. Over the ensuing decade, investigators such as Michael Schwartz, Joel Elmquist, and Richard Palmiter dissected the primary components of the melanocortin signaling cascade, establishing the dual-pathway model of NPY/AgRP and POMC/CART neurons. The advent of optogenetics and chemogenetics in the 2010s (led by Scott Sternson and Bradford Lowell) allowed millisecond-scale interrogation of these neurons, conclusively proving that AgRP neuron firing evokes rapid, motivated food consumption even in satiated subjects.
6. Theoretical Foundations
Contemporary arcuate neurobiology is grounded in Claude Bernard's classic doctrine of the milieu intérieur, formalized into modern cybernetics by Walter Cannon as homeostasis. According to negative feedback control theory, physiological systems maintain essential variables (such as adiposity, blood glucose levels, and hydration status) within narrow operational bands via closed-loop feedback mechanisms. The arcuate nucleus serves as the primary comparative comparator and error-detection nexus within this homeostatic architecture, comparing peripheral hormonal inputs against an internal somatic set-point.
Within this framework, Gordon Kennedy's "Lipostatic Hypothesis" (posited in 1953) provides the foundational theoretical scaffold for arcuate energy surveillance. Kennedy predicted that adipose tissue releases a blood-borne factor in direct proportion to systemic lipid stores, which acts centrally on hypothalamic circuits to diminish appetite and restore baseline body mass. The molecular discovery of leptin confirmed this formulation: leptin acts directly on arcuate POMC and AgRP neurons as an affirmative indicator of peripheral energy abundance, while its absence or fall signals starvation.
In modern cognitive and behavioral neuroscience, the arcuate nucleus is interpreted through the theoretical framework of allostasis and predictive homeostatic regulation (allostatic load theory developed by Peter Sterling and Bruce McEwen). Rather than operating merely as a passive, reactive thermostat, the ARC operates anticipatorily. Contemporary calcium-imaging and fiber-photometry studies demonstrate that AgRP neurons diminish their firing rates within seconds of an animal merely smelling, viewing, or cue-associating calorie-dense food—far before nutrient absorption takes place in the gastrointestinal tract. This reveals that the arcuate nucleus integrates exteroceptive sensory data with interoceptive state cues, shifting its regulatory outputs to prepare the organism for incoming metabolic fluxes.
7. Key Components, Types & Dimensions
The arcuate nucleus is cytochemically and topographically heterogeneous, containing specialized sub-populations defined by distinct transcriptional profiles, receptor expressions, and projection targets:
- NPY/AgRP/GABA Neurons (Orexigenic): Located predominantly in the ventromedial aspect of the ARC, these cells express the long-form leptin receptor (LepRb), insulin receptors, and the growth hormone secretagogue receptor (GHSR-1a) for ghrelin. Activation triggers feeding, inhibits brown adipose tissue thermogenesis, reduces peripheral glucose disposal, and directly inhibits POMC neurons via localized GABA release.
- POMC/CART Neurons (Anorexigenic): Concentrated in the lateral and ventrolateral divisions of the ARC, these neurons synthesize pro-opiomelanocortin, which undergoes post-translational processing by prohormone convertases (PC1/3 and PC2) into α-MSH, β-endorphin, and ACTH. Activation triggers satiety, stimulates metabolic rate, and potentiates sympathetic outflow via projections to the paraventricular nucleus of the hypothalamus (PVN).
- Tuberoinfundibular Dopamine (TIDA) Neurons: Neuroendocrine cells that release dopamine into the hypophyseal portal plexus to constitutively repress prolactin synthesis and secretion from pituitary lactotroph cells, regulating lactation, maternal behavior, and gonadal function.
- KNDy Neurons (Kisspeptin / Neurokinin B / Dynorphin): Co-express the three eponymic peptides and coordinate synchronized, pulsatile discharges that drive gonadotropin-releasing hormone (GnRH) release in the preoptic area, establishing the regulatory clockwork of the hypothalamic-pituitary-gonadal (HPG) axis.
- GHRH Neurons: Peptidergic neurons that synthesize and discharge Growth Hormone-Releasing Hormone into the hypophyseal portal system, thereby promoting pulsatile somatotropin release from anterior pituitary somatotrophs.
- Ependymal Tanycytes: Specialized radial glial cells forming the ventricular floor that actively regulate nutrient transport, sense glucose variations, form selective tanycytic barrier interfaces, and harbor neurogenic progenitor properties capable of replenishing arcuate neurons across adulthood.
8. Examples & Illustrative Cases
A prime clinical manifestation of arcuate nucleus dysfunction is congenital leptin deficiency or severe leptin receptor mutations. In pediatric patients harboring these autosomal recessive mutations, the arcuate nucleus is blind to circulating adipose signals. Because NPY/AgRP neurons never receive inhibitory leptin binding and POMC neurons remain unstimulated, the arcuate circuit permanently signals acute starvation. Patients exhibit intractable hyperphagia, intense food-seeking behavior, rapid-onset morbid obesity in infancy, and neuroendocrine sequelae including hypogonadotropic hypogonadism, because the reproductive KNDy axis detects insufficient metabolic fuel to support reproduction.
A second illustrative example occurs in functional hypothalamic amenorrhea (FHA), commonly observed in elite athletes, dancers, or individuals suffering from anorexia nervosa. Marked energy deprivation, high physical exertion, and chronic psychological stress reduce circulating leptin and elevate ghrelin and cortisol. Within the arcuate nucleus, the prolonged deficit in energy availability suppresses the regular pulse-generating cadence of KNDy neurons. Consequently, the downstream GnRH pulses slow or cease entirely, halting luteinizing hormone (LH) and follicle-stimulating hormone (FSH) secretion from the pituitary, ultimately culminating in anovulation and secondary amenorrhea.
A third scenario involves pharmacological exploitation of arcuate circuitry in managing metabolic disorders. The treatment of monogenic obesity with setmelanotide (an artificial melanocortin-4 receptor agonist) directly bypasses upstream defects in POMC synthesis, leptin receptor processing, or proprotein convertase activity. By directly stimulating the downstream target of arcuate α-MSH, setmelanotide restores satiety signaling, curbing intractable hunger in individuals afflicted with rare genetic disruptions of the arcuate-melanocortin pathway.
9. Measurement & Assessment
Investigating and assessing the arcuate nucleus spans pre-clinical neurobiological techniques and clinical diagnostic methodologies:
- Functional and Structural Neuroimaging (fMRI / Ultra-High Field MRI): In human clinical research, high-field (7-Tesla and above) magnetic resonance imaging permits structural segmentation of the mediobasal hypothalamus. Functional blood-oxygen-level-dependent (BOLD) sequences track arcuate reactivity in response to visual food cues, oral glucose loading, or systemic peptide infusions.
- In Vivo Fiber Photometry and Calcium Imaging: In animal models, genetically encoded calcium indicators (such as GCaMP6/7/8) expressed selectively under the control of Agrp or Pomc promoters allow real-time observation of population-level neuronal firing while freely moving animals forage, feed, or encounter stressors.
- Single-Cell RNA Sequencing (scRNA-seq): Transcriptomic profiling of dissociated hypothalamic tissues has redefined arcuate cytoarchitecture, characterizing distinct molecular clusters within seemingly homogeneous cell groups (e.g., separating POMC neurons into discrete sub-classes expressing distinct combinations of GPCRs and ion channels).
- Neuroendocrine Biomarker Assays: In clinical practice, arcuate health is indirectly assessed by measuring systemic endocrine output via chemiluminescent immunoassays for prolactin (reflecting TIDA dopaminergic tone), pulsatile LH/FSH profiles, and circulating ratios of metabolic markers such as leptin, insulin, and total-to-active acyl-ghrelin.
- Optogenetic and Chemogenetic Perturbation: Pre-clinical validation utilizes channelrhodopsins (ChR2) or Designer Receptors Exclusively Activated by Designer Drugs (DREADDs) to selectively evoke or silence specific arcuate cell populations with spatial and temporal precision.
10. Applications & Practical Significance
The arcuate nucleus is the central therapeutic target in modern pharmacology directed at obesity, diabetes, and metabolic syndrome. The development of long-acting glucagon-like peptide-1 (GLP-1 receptor agonists) and dual/triple co-agonists (such as semaglutide, tirzepatide, and retatrutide) relies in substantial part on their ability to recruit arcuate POMC neurons, directly and indirectly suppress AgRP activity, and reset autonomic energy homeostatic setpoints, driving reductions in food intake and substantial body weight loss.
In reproductive medicine, discoveries surrounding arcuate KNDy neurons have yielded modern therapeutics for reproductive and vasomotor disorders. Neurokinin-3 receptor (NK3R) antagonists, such as fezolinetant, act specifically on arcuate KNDy neurons to stabilize temperature-regulation circuits in the adjacent preoptic area. This mechanistically resolves moderate-to-severe vasomotor symptoms (hot flashes) associated with menopause without relying on exogenous estrogen replacement therapy.
Within oncology, neurosurgery, and neuroendocrinology, the arcuate nucleus plays an important role in interpreting complications associated with craniopharyngiomas, suprasellar germ cell tumors, and hypothalamic damage following radiation therapy. "Hypothalamic obesity," an intractable form of weight gain that often follows the surgical resection of sellar and parasellar tumors, stems from mechanical or ischemic disruption of the arcuate nucleus and its pathways to the paraventricular nucleus, eliminating natural satiety feedback.
11. Research & Empirical Evidence
Decades of rigorous laboratory experiments have illuminated the operational principles of the arcuate nucleus. Landmark investigations led by Cowley et al. (2001) demonstrated that leptin hyperpolarizes and silences NPY/AgRP neurons while directly depolarizing POMC neurons, providing the cellular basis for leptin-mediated satiety. Conversely, Andrews et al. (2008) established that peripheral ghrelin crossing the median eminence stimulates AMP-activated protein kinase (AMPK) in AgRP neurons, promoting intracellular fatty acid oxidation and triggering acute bursts of action potentials that command search and consumption behaviors.
Seminal optogenetic experiments performed by Aponte, Atasoy, and Sternson (2011) fundamentally revised feeding circuitry concepts. Using cell-type-specific light activation in transgenic mice, the researchers revealed that photo-stimulation of AgRP neurons evokes ravenous food consumption within minutes, driving satiated mice to consume up to an entire day's caloric quota. In contrast, photostimulation of POMC neurons attenuated food consumption over subsequent hours. Further work by Betley et al. (2015) identified that AgRP neurons encode a sustained, negative-valence state—analogous to physiological hunger—that animals are actively motivated to silence, proving that the arcuate nucleus is directly linked into basic behavioral reinforcement loops.
Human genetic mapping studies have continuously supported these rodent paradigms. International genome-wide association studies (GWAS) led by the GIANT consortium have repeatedly linked high-confidence single nucleotide polymorphisms (SNPs) associated with human Body Mass Index (BMI) to genes enriched within the arcuate nucleus and its melanocortin downstream targets, notably POMC, PCSK1, LEPR, and MC4R. These outcomes verify that the fundamental mechanisms governing human body weight variation reside primarily in the central nervous system's metabolic sensing hubs rather than within peripheral metabolic tissues alone.
12. Cultural & Cross-Cultural Considerations
While the anatomical and cytochemical layout of the arcuate nucleus is universally conserved across the human species, its regulatory efficacy exists in dynamic tension with culturally driven nutritional environments. In evolutionary anthropology, the thrifty gene hypothesis (first conceptualized by James Neel) posits that arcuate neurocircuits evolved under intense selective pressure to prioritize AgRP-driven hyperphagia and energy conservation during recurrent periods of food scarcity. In contemporary industrialized settings characterized by ultra-processed foods, these conserved neurocircuits are chronically challenged by environmental conditions that favor excessive energy intake.
Cross-cultural patterns of metabolic diseases—such as type 2 diabetes and obesity—reveal varying degrees of vulnerability across diverse populations facing rapid nutritional transitions. While genetic variations within the melanocortin-leptin axis may explain minor population-level baseline variances, the primary divergence stems from how ultra-processed, hyper-palatable diets bypass homeostatic arcuate controls. Arcuate signaling can be overridden by hedonic, dopamine-driven reward circuits in the ventral tegmental area and nucleus accumbens, demonstrating that cultural shifts toward high-sugar, high-fat environments challenge the evolutionarily ancient homeostatic boundaries maintained by the mediobasal hypothalamus.
13. Criticisms, Debates & Limitations
Despite the dominance of the dual-pathway model (AgRP vs. POMC), several neurobiologists argue that over-simplifying the arcuate nucleus into a simple two-switch "hunger/satiety" rheostat is an incomplete reduction. Detailed transcriptomic studies have revealed significant internal heterogeneity: POMC neurons are not a uniform cohort, but rather segregate into distinct functional subsets exhibiting divergent electrophysiological responses to glucose and insulin, with some subsets expressing alternative transmitters such as acetylcholine or glutamate.
A second persistent controversy centers around the exact nature of the blood-brain barrier at the arcuate-median eminence interface. While historically described as an open window devoid of endothelial tight junctions, recent electron microscopy and tracer studies reveal that arcuate endothelial vessels do express claudin-5 and other barrier proteins, whereas the true fenestrations remain largely confined to the adjacent median eminence. Tanycytic tight junctions fluctuate dynamically in response to systemic nutritional states, indicating that access of systemic macromolecules to the arcuate parenchyma is an actively regulated, plastic physiological process rather than a passive leak.
Finally, there is an ongoing scientific debate regarding the relative contributions of homeostatic hypothalamic processing versus hedonic corticolimbic circuitry in human obesity. Critics of hypothalamus-centric models assert that in human eating disorders and obesity, sensory enjoyment, reward learning, emotional stress, and environmental cues frequently decouple feeding from homeostatic caloric demands. Consequently, while the arcuate nucleus remains indispensable for basic physiological energy survival, it functions as one node within an extensive, distributed network spanning the brainstem, mesolimbic reward system, and prefrontal cortex.
14. Related Terms & Distinctions
To prevent neuroanatomical and physiological conflation, the arcuate nucleus must be distinguished from adjacent brain nuclei and related neuroendocrine constructs:
- Paraventricular Nucleus of the Hypothalamus (PVN): A critical "second-order" hypothalamic region located dorsal to the ARC. The PVN receives dense axonal projections from arcuate AgRP and POMC neurons; it expresses MC4Rs and synthesizes corticotropin-releasing hormone (CRH), oxytocin, and thyrotropin-releasing hormone (TRH) to control autonomic tone and pituitary endocrine output.
- Ventromedial Hypothalamic Nucleus (VMH): An anatomical neighbor of the ARC historically designated the "satiety center." The VMH expresses distinct neurochemical markers (e.g., steroidogenic factor 1, SF-1) and governs glucose homeostasis, lipid expenditure, and defensive behaviors, distinct from the primary first-order sensing performed by the ARC.
- Lateral Hypothalamic Area (LHA): Historically designated the "hunger center," the LHA contains orexin/hypocretin and melanin-concentrating hormone (MCH) neurons. It receives input from the arcuate nucleus and bridges homeostatic sensing with motivated motor behaviors and arousal.
- Nucleus of the Solitary Tract (NTS): A critical sensory relay station located in the caudal brainstem. While the NTS also integrates peripheral metabolic cues (especially vagal mechanoreceptive and peptide signals from the gut), it does so via visceral cranial nerves rather than direct exposure to the hypophyseal portal microvasculature.
- Median Eminence (ME): A circumventricular organ immediately ventral to the arcuate nucleus. Unlike the ARC, the ME consists largely of non-neuronal tanycytes, fenestrated capillaries, and passing axonal terminals of neurosecretory cells, serving as the exit portal for hypophysiotropic hormones rather than an integrative neuronal soma hub.
15. Summary / Key Takeaways
The arcuate nucleus stands as a cornerstone of mammalian neuroendocrinology, coordinating physiological energy balance, somatic growth, and reproductive status. By virtue of its privileged vascular position along the floor of the third ventricle, its dual orexigenic (AgRP/NPY) and anorexigenic (POMC/CART) pathways continuously read, interpret, and adjust to the body's shifting energetic state. Far from a simple reflexive relay, the arcuate nucleus dynamically predicts metabolic demand, integrates exteroceptive environmental cues, and projects to broad downstream autonomic and endocrine networks to preserve systemic equilibrium.
In summary, the arcuate nucleus serves as the central control room for systemic homeostasis, orchestrating peripheral metabolic feedback with targeted central and neuroendocrine outputs. Its cellular and receptor dynamics remain foundational to the clinical understanding of metabolic disorders, reproductive dysregulation, and the ongoing design of targeted neuropharmacological interventions.
References
- Aponte, Y., Atasoy, D., & Sternson, S. M. (2011). AGRP neurons are sufficient to orchestrate rapidly hunger-driven behavior. Nature Neuroscience, 14(3), 351–355. https://doi.org/10.1038/nn.2739
- Betley, J. N., Xu, S., Cao, Z. F., Gong, R., Magnus, C. J., & Sternson, S. M. (2015). Neurons for hunger and thirst transmit a negative-valence teaching signal. Nature, 521(7551), 180–185. https://doi.org/10.1038/nature14416
- Cowley, M. A., Smart, J. L., Rubinstein, M., Cerdán, M. G., Diano, S., Horvath, T. L., Cone, R. D., & Low, M. J. (2001). Leptin activates anorexigenic POMC neurons through a POMC-neuronal circuit. Nature, 411(6836), 480–484. https://doi.org/10.1038/35078085
- Friedman, J. M. (2019). Leptin and the endocrine control of energy balance. Nature Metabolism, 1(8), 754–764. https://doi.org/10.1038/s42255-019-0095-y
- Morton, G. J., Cummings, D. E., Baskin, D. G., Barsh, G. S., & Schwartz, M. W. (2006). Central nervous system control of food intake and body weight. Nature, 443(7109), 289–295. https://doi.org/10.1038/nature05026