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Hormone that inhibits hunger
Leptin (from Greek λεπτός leptos, "thin" or "light" or "small"), also known as obese protein, is a protein hormone predominantly made by adipocytes (cells
Leptin
Type I cytokine receptor
Leptin receptor, also known as LEP-R or OB-R, is a type I cytokine receptor, a protein that in humans is encoded by the LEPR gene. LEP-R functions as a
Leptin_receptor
Loose connective tissue composed mostly by adipocytes
recognized as a major endocrine organ, as it produces hormones such as leptin, estrogen, resistin, and cytokines (especially TNFα). In obesity, adipose
Adipose_tissue
Obesity caused by a mutation in a single gene
condition. Known mutations leading to monogenetic obesity include: Leptin deficiency Leptin receptor deficiency Melanocortin-4 receptor (MC4R) Proopiomelanocortin
Monogenic_obesity
German developmental biologist and immunologist (born 1954)
Maria Leptin (born 15 September 1954) is a German developmental biologist and immunologist, and the current president of the European Research Council
Maria_Leptin
Physical transition from a child to an adult
Leptin might be the cause of the GnRH rise. Leptin has receptors in the hypothalamus which synthesizes GnRH. Individuals who are deficient in leptin fail
Puberty
Protein family
Teleost leptins are a family of peptide hormones found in fish (teleostei) that are orthologs of the mammalian hormone leptin. The teleost and mammalian
Teleost_leptins
Laboratory technique to study physiology
to the discovery of leptin, she analyzed leptin concentrations of the mice in the parabiotic experiments. After injecting leptin into each pair's obese
Parabiosis
Desire to eat food
and leptin are released from the stomach and adipose cells, respectively, into the blood stream. Ghrelin stimulates feelings of hunger, whereas leptin stimulates
Appetite
Drug that reduces appetite
mechanisms, ranging from hormonal regulation to neural signaling. Ghrelin, leptin, and peptide YY are among the hormones involved in appetite control. Additionally
Anorectic
Abnormally strong sensation of hunger or desire to eat
symptom of Kleine–Levin syndrome, it is sometimes termed megaphagia. Impaired leptin signaling in vagal nerve receptors has been shown to cause hyperphagia.
Polyphagia
Sensation experienced when one feels the physiological need to eat food
the discovery, in 1994, of leptin, a hormone produced by the adipose tissue that appeared to provide negative feedback. Leptin is a peptide hormone that
Hunger_(physiology)
Mutant mouse that eats excessively and becomes profoundly obese
excessively due to mutations in the gene responsible for the production of leptin and becomes profoundly obese. It is an animal model of type II diabetes
Ob/ob_mouse
Relationship between biological organs
through multiple mechanisms. While GnRH neurons do not express leptin receptors directly, leptin influences GnRH neuronal activity indirectly via regulation
Hypothalamic–pituitary–gonadal axis
Hypothalamic–pituitary–gonadal_axis
Theory in human biology
functional leptin or who produce leptin but are insensitive to it are prone to develop obesity. This has been confirmed by experimental "knockdown" of leptin receptors
Set_point_theory
Inability to produce or maintain healthy fat tissue
the face). This condition is also characterized by a lack of circulating leptin which may lead to osteosclerosis. The absence of fat tissue is associated
Lipodystrophy
Medical condition
leptin has been observed as a growth factor in breast tissue. Increased leptin levels have been observed in some cases of PT. The increase in leptin levels
Premature_thelarche
Convergence of pathology with physiology
to find any leptin gene mutations in humans with obesity. Instead, they observed increased leptin expression, indicating potential leptin resistance in
Pathophysiology
American geneticist (born 1954)
Investigator of the Howard Hughes Medical Institute. His discovery of the hormone leptin and its role in regulating body weight has had a major role in the area
Jeffrey_M._Friedman
Area of the brain below the thalamus
tract.[citation needed] Autonomic inputs Blood-borne stimuli, including leptin, ghrelin, angiotensin, insulin, pituitary hormones, cytokines, plasma concentrations
Hypothalamus
Hormones secreted by adipose tissue
is an endocrine organ that secretes numerous protein hormones, including leptin, adiponectin, and resistin. These hormones generally influence energy metabolism
Adipose-derived_hormones
Branch of medicine pertaining to the endocrine system
All hormones secreted by the pituitary gland are peptide hormones, as are leptin from adipocytes, ghrelin from the stomach, and insulin from the pancreas
Endocrinology
Hormone whose molecules are peptides
Follicle-stimulating hormone (FSH) Human chorionic gonadotropin (hCG) Insulin Leptin Luteinizing hormone (LH) Melanocyte-stimulating hormone (MSH) Orexin/Hypocretin
Peptide_hormone
Medical condition of excess body fat
part by leptin. Leptin inhibits the NPY/AgRP group while stimulating the POMC/CART group. Thus a deficiency in leptin signaling, either via leptin deficiency
Obesity
Relation between obesity and genetic factors
obesity. Studies have identified mutations in genes such as LEP (leptin), LEPR(leptin receptor), MC4R (melanocortin 4 receptor), and POMC (pro-opiomelanocortin)
Genetics_of_obesity
Hormone-producing glands of a body
– sex hormones CRH – ACTH – cortisol Renin – angiotensin – aldosterone Leptin vs. ghrelin Endocrine glands are glands of the endocrine system that secrete
Endocrine_system
portion aids in production of thyroid releasing hormone, somatostatin, leptin, gastrin, and neuropeptide Y. In humans and primates it also produces GnRH
Periventricular_nucleus
American fertility researcher (1918–2015)
fertility and human development whose work was instrumental in the discovery of leptin. She researched infertility and discovered that low body fat is a contributing
Rose_Frisch
Canadian-American physiologist and biochemist
and their research teams at Rockefeller University, which Friedman named leptin. Coleman was born in Stratford, Ontario, Canada in 1931. He was the first
Douglas_L._Coleman
Peptide hormone involved in appetite regulation
protein (AgRP) neurons. Ghrelin-responsiveness of these neurons is both leptin- and insulin-sensitive. Ghrelin reduces the sensitivity of gastric vagal
Ghrelin
Pharmaceutical drug
the brand name Myalept among others, is a synthetic analog of the hormone leptin used to treat various forms of dyslipidemia. It has been approved in Japan
Metreleptin
Breed of pig
intake and propensity to obesity, compatible with high values of serum leptin. The Iberian pig can be either red or dark in colour, if black ranging from
Black_Iberian_pig
American medical researcher (born 1942)
co-discovery at Rockefeller University of the hormone leptin, and cloning of the leptin and leptin receptor genes, has had a major role in the area of understanding
Rudolph_Leibel
Recurrent period shorter than 24 hours, in chronobiology
Leptin circadian cycle, interfered by three meals. One can see that leptin goes high during the day, then it falls off, before starting the cycle again
Ultradian_rhythm
Ingestion of food
fat stored in adipose tissue. Adipose tissue secretes the hormone leptin, and leptin suppresses appetite. Long-term satiety signals from adipose tissue
Eating
Excessive vomitings during pregnancy
accepted theories suggests that levels of β-hCG are associated with it. Leptin, a hormone that inhibits hunger, may also play a role. Possible pathophysiological
Hyperemesis_gravidarum
Portuguese neuroscientist
Firstly, her laboratory discovered that a hormone produced by fat, called leptin, interacts with the sympathetic nerves to control fat breakdown. Sympathetic
Ana_Domingos
Process of heat production within organisms
thought to directly stimulate BAT thermogenesis, the mechanism by which leptin increases thermogenesis is through inhibiting torpor, which raises the body
Thermogenesis
Peptides derived from pro-opiomelanocortin
the other hand, when AgRP neurons release AgRP, appetite is stimulated. Leptin, the energy surfeit hormone, and Ghrelin, the hunger hormone, are upstream
Melanocortin
Fatty tissue composed of white adipocytes
1995.269.6.E1059. PMID 8572197. Zhou Y, Rui L (June 2013). "Leptin signaling and leptin resistance". Frontiers of Medicine. 7 (2): 207–22. doi:10
White_adipose_tissue
Mammalian protein found in humans
weight-reduction effects via the brain. This is similar to the action of leptin; adiponectin and leptin can act synergistically. Adiponectin promoted synaptic and memory
Adiponectin
Medical tubes inserted in the body to extract or administer substances
hypothalamic open flow micro-perfusion reveals normal leptin transport across the blood–brain barrier in leptin resistant mice" [Molecular Metabolism 13 (2018)
Catheter
Type of intestinal cell
salts. Enterocytes also have an endocrine role, secreting hormones such as leptin. The major functions of enterocytes include: Ion uptake, including sodium
Enterocyte
Private medical school in New York, US
and Rudolph Leibel whose co-discovery of the hormone leptin, and cloning of the leptin and leptin receptor genes, has had a major role in the area of understanding
Columbia University College of Physicians and Surgeons
Columbia_University_College_of_Physicians_and_Surgeons
Suborder of mammals
Nikolas (ed.). "Phocid seal leptin: Tertiary structure and hydrophobic receptor binding site preservation during distinct leptin gene evolution". PLOS ONE
Caniformia
Cells that primarily compose adipose tissue, specialized in storing energy as fat
secrete many proteins acting as adipokines such as resistin, adiponectin, leptin and apelin. An average human adult has 30 billion fat cells with a weight
Adipocyte
State of being filled or satisfied
Sudar-Milovanovic E, Soskic S, Essack M, Arya S, Stewart AJ, et al. (2021). "Leptin and Obesity: Role and Clinical Implication". Frontiers in Endocrinology
Satiety
Medical condition
the level of leptin in the body is proportional to the amount of adipose tissue present, AGL patients also have a deficiency of leptin which contributes
Acquired generalized lipodystrophy
Acquired_generalized_lipodystrophy
associated with insulin resistance. Leptin is a satiety adipokine released from adipocytes. Normally, leptin interacts with leptin receptors (LEPRs) in the brain
Obesity_and_fertility
Organization of researchers in the life science
Directors Raymond Appleyard, John Tooze, Frank Gannon, Hermann Bujard and Maria Leptin. In 2011, EMBO established a Policy Programme which interacts with policymakers
European Molecular Biology Organization
European_Molecular_Biology_Organization
Hormones produced in the GI
Hany A.; AL-Biati, Haedar A (2022). "The Role of Leptin Hormone, Neuropeptide Y, Ghrelin and Leptin/Ghrelin ratio in Obesogenesis". Medical and Pharmaceutical
Gastrointestinal_hormone
Low-carbohydrate fad diet
low-carbohydrate fad diet based on the ideas of Ron Rosedale about how leptin affects the human body. The diet is marketed with questionable claims about
Rosedale_diet
Endocrinological condition
about the body's energy state. They may be stimulated by signals such as leptin, alpha-MSH, and catecholamines; and inhibited by glucocorticoids, neuropeptide
Euthyroid_sick_syndrome
Biological system of neurotransmitters
produced is inversely correlated with the amount of leptin in the blood. For example, mice without leptin not only become massively obese but express abnormally
Endocannabinoid_system
Puberty occurring at an unusually early age
Mutations in genes such as LIN28, and LEP and LEPR, which encode leptin and the leptin receptor, have been associated with precocious puberty. The association
Precocious_puberty
Type of cytokines secreted by adipose tissue
adipokine to be discovered was leptin in 1994. Since that time, hundreds of adipokines have been discovered. Members include: Leptin Adiponectin Apelin chemerin
Adipokine
Peptide hormone that plays a role in glycemic regulation
for weight loss with leptin and amylin coadministration in diet-induced obese rats by restoring hypothalamic sensitivity to leptin. However, in clinical
Amylin
Physiological processes in obese people
mutations in the leptin gene in humans with obesity. On the contrary, leptin expression was increased, proposing the possibility of leptin-resistance in
Pathophysiology_of_obesity
American-Australian psychiatrist
thyrotropin (TSH) and leptin concentrations in healthy adults and leptin-deficient subjects: evidence for possible partial TSH regulation by leptin in humans".
Julio_Licinio
Family of peptide hormones and neuropeptides
arcuate nucleus of the hypothalamus make and secrete α-MSH in response to leptin; α-MSH is also made and secreted in the anterior lobe of the pituitary gland
Melanocyte-stimulating hormone
Melanocyte-stimulating_hormone
Anterior lobe of the pituitary gland
(2007) Leptin and the regulation of the hypothalamic-pituitary-adrenal axis. Int Rev Cytol. 263: 63-102. Sone, M. and Osamura, R.Y. (2001) Leptin and the
Anterior_pituitary
Short chains of 2–50 amino acids
GLP-1 Liver/other Insulin-like growth factor IGF-1 IGF-2 Adipose tissue Leptin Adiponectin Resistin Skeleton Osteocalcin Kidney Renin EPO Calcitriol Prostaglandin
Peptide
Chemical compound
leptin expression and secretion and increased leptin clearance by the kidneys. In obese mice given the drug, the resulting resensitization to leptin levels
JD5037
Intense desire to consume specific foods
very active, increasing the levels of pleasure. Hormones like dopamine, leptin, ghrelin, and cortisol are released, as well as insulin due to this stimulation
Food_craving
Biological process
the action of certain peptide hormones and neuropeptides (e.g., insulin, leptin, ghrelin, and neuropeptide Y, among others) in the hypothalamus. Energy
Energy_homeostasis
Absence of a menstrual period in a woman of reproductive age
hormone (FSH). Low levels of the hormone leptin are also seen in females with low body weight. Like ghrelin, leptin signals energy balance and fat stores
Amenorrhea
Hormones and neuropeptides
GLP-1 Liver/other Insulin-like growth factor IGF-1 IGF-2 Adipose tissue Leptin Adiponectin Resistin Skeleton Osteocalcin Kidney Renin EPO Calcitriol Prostaglandin
Endorphins
Cell cycle regulation pathway
PI3K/AKT pathway including EGF, shh, IGF-1, insulin, and calmodulin. Both leptin and insulin recruit PI3K signalling for metabolic regulation. The pathway
PI3K/AKT/mTOR_pathway
Medical condition
Congenital causes include Prader-Willi syndrome and mutations of LEP (leptin gene), LEPR, POMC, MC4R, and CART. It can also result from injuries to the
Hypothalamic_obesity
Mammalian protein found in Homo sapiens
Smart JL, Rubinstein M, Cerdán MG, Diano S, Horvath TL, et al. (May 2001). "Leptin activates anorexigenic POMC neurons through a neural network in the arcuate
Proopiomelanocortin
Endocrine gland of the brain
(2007) Leptin and the regulation of the hypothalamic-pituitary-adrenal axis. Int Rev Cytol. 263: 63-102. Sone, M. and Osamura, R.Y. (2001) Leptin and the
Pituitary_gland
Indian breatharian monk (1929–2020)
his bladder", he did not pass urine. Based on Jani's reported levels of leptin and ghrelin, two appetite-related hormones, DRDO researchers posited that
Prahlad_Jani
Stage of higher primate sexual development
either fetal or childhood body mass and related signals such as insulin and leptin. Many children born small for gestational age (SGA) because of intrauterine
Adrenarche
Order of amphibians
or not to eat: Ontogeny of hypothalamic feeding controls and a role for leptin in modulating life-history transition in amphibian tadpoles". Proceedings
Frog
These cells have also been shown to produce ghrelin's antagonistic hormone leptin. PD/1 cells are equivalent to A-like cells in rats and X-type cells in dogs
P/D1_cell
Type of gastric gland cell
evidence that the gastric chief cell secretes leptin in response to the presence of food in the stomach. Leptin has been found in the pepsinogen granules
Gastric_chief_cell
American medical society
Rudolph Leibel, MD, professor at Columbia University and discoverer of leptin and leptin receptor Alice H. Lichtenstein, senior scientist and director of Cardiovascular
National_Academy_of_Medicine
Increase in a person's total body mass
weight. Two hormones responsible for regulating hunger and metabolism are leptin, which inhibits appetite and increases energy expenditure, and ghrelin,
Weight_gain
Family of biomolecules
inhibitory factor (LIF), interleukin-6 (IL-6), prolactin, growth hormone, leptin, interferons (i.e., interferon-α, -β, and -γ), and oncostatin M. Ciliary
Neurotrophic_factors
Weight of a human neonate at birth
and it is shown that children with the low birth weights have increased leptin levels after they catch up growth during childhood. Adiponectin levels are
Birth_weight
Locally compact topological group with an invariant averaging operation
Haar measure such that m(U Δ gU)/m(U) is arbitrarily small for g in F. Leptin's condition. For every finite (or compact) subset F of G there is a measurable
Amenable_group
Syndrome causing muscle loss
the mitochondria of fat cells. Leptin is a hormone known to decrease appetite. People with cachexia often have high leptin levels, making them feel less
Cachexia
Gill-bearing non-tetrapod aquatic vertebrates
Suckermouth Swim bladder physoclisti physostome Teeth pharyngeal shark Teleost leptins Digital Library Sensory systems Ampullae of Lorenzini Barbel Hydrodynamic
Fish
Peptide released from cells in the ileum and colon in response to feeding
long-term intake reduction. Leptin also reduces appetite in response to feeding, but obese people develop a resistance to leptin. Obese people secrete less
Peptide_YY
British consultant physician
identified patients with mutations in genes encoding leptin, the leptin receptor and biological targets of leptin action, such as the Melanocortin 4 receptor (MC4R)
Sadaf_Farooqi
Excess fat around the stomach and abdomen
presence of cortisol, a hormone that leads to more belly fat deposits and leptin resistance. In the presence of type 2 diabetes, the physician might instead
Abdominal_obesity
Influence of mother's environment and genotype on offspring's phenotype
epigenetic changes in the leptin gene of newborns leading to a potential increased risk for obesity and heart disease. Leptin is sometimes known as the
Maternal_effect
Biochemical process involving the production of fats
Another hormone that may affect lipogenesis through the SREBP-1 pathway is leptin. It is involved in the process by limiting fat storage through inhibition
Lipogenesis
Branch of biology
mediators that carry information about energy balance, including glucose, leptin, and ghrelin. ... Accordingly, orexin plays a role in the regulation of
Bioenergetics
Instinctive response in humans and many animals
contains growth factors such as epidermal growth factor, VEGF, TGF-β1, leptin, IGF-I, lysophosphatidic acid, hyaluronan and NGF, which all promote healing
Wound_licking
Neuropeptide that regulates arousal, wakefulness, and appetite
intake. Orexin-producing cells have been shown to be inhibited by leptin (through the leptin receptor pathway), but are activated by ghrelin and hypoglycemia
Orexin
Rate of energy expenditure by an endotherm at rest
to seek food. When sufficient food or substrates have been received and leptin is high, then the satiety center is stimulated and sends impulses that inhibit
Basal_metabolic_rate
Factor that stimulates the growth of bone tissue
GLP-1 Liver/other Insulin-like growth factor IGF-1 IGF-2 Adipose tissue Leptin Adiponectin Resistin Skeleton Osteocalcin Kidney Renin EPO Calcitriol Prostaglandin
Bone_growth_factor
Species of fish
Suckermouth Swim bladder physoclisti physostome Teeth pharyngeal shark Teleost leptins Digital Library Sensory systems Ampullae of Lorenzini Barbel Hydrodynamic
Garfish
System involved in the regulation of weight and peripheral tissue such as hair and skin
weight regulation through its role in appetite and energy expenditure via leptin, ghrelin and agouti-related protein. It receives inputs from hormones, nutrients
Central_melanocortin_system
Rat used for scientific research
fatty rat (ZDF rat), which is actually a recessive trait (fa/fa) of the leptin receptor, capable of weighing up to 1 kilogram (2.2 lb) — more than twice
Laboratory_rat
Mammalian protein found in Homo sapiens
GLP-1 Liver/other Insulin-like growth factor IGF-1 IGF-2 Adipose tissue Leptin Adiponectin Resistin Skeleton Osteocalcin Kidney Renin EPO Calcitriol Prostaglandin
Growth hormone–releasing hormone
Growth_hormone–releasing_hormone
Form of amenorrhea and chronic anovulation
and leptin are specifically responsible for alterations in GnRH secretion. GABA and KNDy neurons synapse with GnRH neurons at sites where leptin receptors
Functional hypothalamic amenorrhea
Functional_hypothalamic_amenorrhea
citation needed] There are two hormones, leptin and ghrelin, that are important in appetite control. Leptin, released by adipose tissue, is a hormone
Sleep_and_metabolism
Ellen Ruppel's book
led to the co-discovery of the Leptin gene in 1994. Based on interviews with the parties involved, she reports that Leptin was co-discovered at Rockefeller
The_Hungry_Gene
LEPTIN
LEPTIN
LEPTIN
LEPTIN
Boy/Male
Indian
Master, Gentleman, Companion
Girl/Female
Hindu, Indian, Tamil
A Wise Lady
Boy/Male
Hindu
Boy/Male
Sikh
The exalted bravery and courage
Boy/Male
Tamil
Able, Fit
Boy/Male
Hindu, Indian, Kannada, Marathi, Telugu
Chaste
Boy/Male
American, Australian, British, English
From the Enclosed Pasture Meadow
Boy/Male
Indian, Punjabi, Sikh
Memorable
Boy/Male
Hindu, Indian, Telugu
The Emperor; Name of a King in India
Girl/Female
Arabic, Muslim
Beautiful; Good Looking
LEPTIN
LEPTIN
LEPTIN
LEPTIN
LEPTIN