dendrite arborization
Definition
Target type: biologicalprocess
The process in which the anatomical structures of a dendritic tree are generated and organized into dendritic branches. [GOC:aruk, GOC:bc, PMID:23270857]
Dendrite arborization is a complex and crucial developmental process that shapes the intricate structure of neurons, enabling them to receive and integrate a vast array of signals. This process involves the generation, elongation, and branching of dendrites, the tree-like extensions of neurons that receive input from other nerve cells. The elaborate branching patterns of dendrites play a fundamental role in neuronal communication and information processing.
During development, dendrite arborization is driven by a precise orchestration of molecular and cellular events. These events include:
1. **Gene expression and protein synthesis:** Specific genes are activated, leading to the production of proteins that are essential for dendrite formation and growth. These proteins include cytoskeletal elements, signaling molecules, and transcription factors.
2. **Cytoskeletal dynamics:** The intricate network of microtubules and actin filaments that constitute the cytoskeleton provides structural support and facilitates the transport of molecules within the dendrite. Microtubules, long, rigid polymers of tubulin, extend along the dendrite, guiding its growth and providing tracks for the movement of vesicles and organelles. Actin filaments, shorter and more flexible polymers of actin, are involved in dendritic branching and the formation of dendritic spines, small protrusions that receive synaptic input.
3. **Signaling pathways:** A complex interplay of signaling pathways regulates dendrite development. These pathways involve a variety of molecules, such as growth factors, neurotrophins, and intracellular signaling cascades. Signaling pathways can influence the initiation and termination of dendrite growth, the formation of branches, and the differentiation of dendritic spines.
4. **Synaptic plasticity:** Dendrite arborization is not static; it can be modulated by experience and activity. Synaptic plasticity, the ability of synapses to strengthen or weaken in response to activity, can influence dendritic growth and branching. For example, increased activity at a synapse can lead to the formation of new dendritic spines, increasing the receiving surface area for synaptic input.
Dendrite arborization is essential for neuronal function and is critical for a wide range of brain processes, including learning, memory, and sensory processing. Defects in dendrite arborization can lead to neurological disorders, highlighting the importance of this developmental process.
In conclusion, dendrite arborization is a fundamental biological process that shapes the intricate structure of neurons, enabling them to receive and process information efficiently. This process is regulated by a complex interplay of molecular and cellular events, and it plays a crucial role in brain development and function.'
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Proteins (1)
| Protein | Definition | Taxonomy |
|---|---|---|
| Neuronal acetylcholine receptor subunit alpha-7 | A neuronal acetylcholine receptor subunit alpha-7 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P36544] | Homo sapiens (human) |
Compounds (60)
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| nornicotine | nornicotine: agricultural or horticultural insecticide; RN given refers to (+-)-isomer; structure | ||
| bupropion | bupropion : An aromatic ketone that is propiophenone carrying a tert-butylamino group at position 2 and a chloro substituent at position 3 on the phenyl ring. Bupropion: A propiophenone-derived antidepressant and antismoking agent that inhibits the uptake of DOPAMINE. | aromatic ketone; monochlorobenzenes; secondary amino compound | antidepressant; environmental contaminant; xenobiotic |
| 3-(1-methylpyrrolidin-2-yl)pyridine | 3-(1-methylpyrrolidin-2-yl)pyridine : An N-alkylpyrrolidine that consists of N-methylpyrrolidine bearing a pyridin-3-yl substituent at position 2. | N-alkylpyrrolidine; pyridine alkaloid; pyrrolidine alkaloid | |
| epibatidine | alkaloid | ||
| dimethylphenylpiperazinium iodide | piperazines | ||
| 1,3-dipropyl-8-(4-sulfophenyl)xanthine | 1,3-dipropyl-8-(4-sulfophenyl)xanthine: adenosine receptor antagonist | ||
| anabasine | piperidine alkaloid; pyridine alkaloid | nicotinic acetylcholine receptor agonist; plant metabolite; teratogenic agent | |
| carbamylcholine | |||
| isoflurane | Isoflurane: A stable, non-explosive inhalation anesthetic, relatively free from significant side effects. | organofluorine compound | inhalation anaesthetic |
| kynurenic acid | kynurenic acid : A quinolinemonocarboxylic acid that is quinoline-2-carboxylic acid substituted by a hydroxy group at C-4. Kynurenic Acid: A broad-spectrum excitatory amino acid antagonist used as a research tool. | monohydroxyquinoline; quinolinemonocarboxylic acid | G-protein-coupled receptor agonist; human metabolite; neuroprotective agent; nicotinic antagonist; NMDA receptor antagonist; Saccharomyces cerevisiae metabolite |
| mecamylamine | Mecamylamine: A nicotinic antagonist that is well absorbed from the gastrointestinal tract and crosses the blood-brain barrier. Mecamylamine has been used as a ganglionic blocker in treating hypertension, but, like most ganglionic blockers, is more often used now as a research tool. | primary aliphatic amine | |
| n-methylcarbamylcholine | N-methylcarbamylcholine: structure given in first source | ||
| sb 206553 | SB 206553: a high-affinity 5-HT(2C/2B) antagonist; structure given in first source | pyrroloindole | |
| tilorone | tilorone : A member of the class of fluoren-9-ones that is 9H-fluoren-9-one which is substituted by a 2-(diethylamino)ethoxy group at positions 2 and 7. It is an interferon inducer and a selective alpha7 nicotinic acetylcholine receptor (alpha7 nAChR) agonist. Its hydrochloride salt is used as an antiviral drug. Tilorone: An antiviral agent used as its hydrochloride. It is the first recognized synthetic, low-molecular-weight compound that is an orally active interferon inducer, and is also reported to have antineoplastic and anti-inflammatory actions. | aromatic ether; diether; fluoren-9-ones; tertiary amino compound | anti-inflammatory agent; antineoplastic agent; antiviral agent; interferon inducer; nicotinic acetylcholine receptor agonist |
| tetramethylammonium | tetramethylammonium : The simplest quaternary ammonium cation, comprising a central nitrogen linked to four methyl groups. tetramethylammonium: RN given refers to parent cpd | quaternary ammonium ion | |
| boldine | aporphine alkaloid | ||
| cytisine | alkaloid; bridged compound; lactam; organic heterotricyclic compound; secondary amino compound | nicotinic acetylcholine receptor agonist; phytotoxin; plant metabolite | |
| anatabine | anatabine: alkaloid found in tobacco; structure | bipyridines | |
| laudanosine | laudanosine: opium alkaloid | isoquinolines | |
| 5-hydroxyindole | hydroxyindoles | human metabolite | |
| dihydro-beta-erythroidine | dihydro-beta-erythroidine : An organic heterotetracyclic compound resulting from the partial hydrogenation of the 1,3-diene moiety of beta-erythroidine to give the corresponding 2-ene. Dihydro-beta-Erythroidine: Dihydro analog of beta-erythroidine, which is isolated from the seeds and other plant parts of Erythrina sp. Leguminosae. It is an alkaloid with curarimimetic properties. | delta-lactone; organic heterotetracyclic compound; tertiary amino compound | nicotinic antagonist |
| polygodial | aldehyde | ||
| nicotine | (S)-nicotine : A 3-(1-methylpyrrolidin-2-yl)pyridine in which the chiral centre has S-configuration. The naturally occurring and most active enantiomer of nicotine, isolated from Nicotiana tabacum. | 3-(1-methylpyrrolidin-2-yl)pyridine | anxiolytic drug; biomarker; immunomodulator; mitogen; neurotoxin; nicotinic acetylcholine receptor agonist; peripheral nervous system drug; phytogenic insecticide; plant metabolite; psychotropic drug; teratogenic agent; xenobiotic |
| lobeline | (-)-lobeline : An optically active piperidine alkaloid having a 2-oxo-2-phenylethyl substituent at the 2-position and a 2-hydroxy-2-phenylethyl group at the 6-position. | aromatic ketone; piperidine alkaloid; tertiary amine | nicotinic acetylcholine receptor agonist |
| thiacloprid | (Z)-thiacloprid : The (Z)-stereoisomer of thiacloprid. thiacloprid : A nitrile that is cyanamide in which the hydrogens are replaced by a 1,3-thiazolidin-2-ylidene group which in turn is substituted by a (6-chloropyridin-3-yl)methyl group at the ring nitrogen. thiacloprid: structure in first source | monochloropyridine; nitrile; thiazolidines | environmental contaminant; neonicotinoid insectide; xenobiotic |
| 3-methyl-5-(1-methyl-2-pyrrolidinyl)isoxazole | 3-methyl-5-(1-methyl-2-pyrrolidinyl)isoxazole: structure in first source | ||
| erysodine | erysodine : An erythrina alkaloid with formula C18H21NO3 isolated from several erythrina plant species. It is a competitive antagonist of nicotinic acetylcholine receptors and exhibits antiparasitic and insecticidal activities. erysodine: structure given in first source | aromatic ether; diether; Erythrina alkaloid; organic heterotetracyclic compound; phenols | antiparasitic agent; nicotinic antagonist; phytogenic insecticide |
| varenicline | varenicline : An organic heterotetracyclic compound that acts as a partial agonist for nicotinic cholinergic receptors and is used (in the form of its tartate salt) as an aid to giving up smoking. Varenicline: A benzazepine derivative that functions as an ALPHA4-BETA2 NICOTINIC RECEPTOR partial agonist. It is used for SMOKING CESSATION. | ||
| pozanicline | |||
| pnu 120596 | 1-(5-chloro-2,4-dimethoxyphenyl)-3-(5-methylisoxazol-3-yl)urea: an alpha7nAChR agonist; structure in first source | ureas | |
| harmicine | harmicine: structure in first source | ||
| bisabolol | Kamillosan: drug combination containing chamomile and bisabolol; used to treat dermatitis | sesquiterpenoid | |
| deformylflustrabromine | deformylflustrabromine: has antineoplastic activity; isolated from Flustra folicea; structure in first source | tryptamines | |
| tropacocaine | tropacocaine: RN given refers to (exo)-isomer; structure | ||
| isoliquiritigenin | chalcones | antineoplastic agent; biological pigment; EC 1.14.18.1 (tyrosinase) inhibitor; GABA modulator; geroprotector; metabolite; NMDA receptor antagonist | |
| tropisetron | tropisetron : An indolyl carboxylate ester obtained by formal condensation of the carboxy group of indole-3-carboxylic acid with the hydroxy group of tropine. Tropisetron: An indole derivative and 5-HT3 RECEPTOR antagonist that is used for the prevention of nausea and vomiting. | indolyl carboxylic acid | |
| epibatidine | |||
| anatoxin a | anatoxin I: found mainly in ANABAENA; was indexed to cyanobacterial toxin (MARINE TOXINS). isolated from many salt-tolerant freshwater cyanobacteria | ||
| abt 594 | |||
| 5-(6-chloro-3-pyridinyl)-9-azabicyclo[4.2.1]non-4-ene | azepine | ||
| naringenin chalcone | 2',4,4',6'-tetrahydroxychalcone : A member of the class of chalcones that is trans-chalcone substituted by hydroxy groups at positions 2' ,4, 4', and 6' respectively. naringenin chalcone: RN given refers to cpd with unspecified stereoisomer & from CA Vol 92 Form Index; RN for cpd not in Chemline 7/6/83; structure in first source | chalcones; polyphenol | anti-allergic agent; anti-inflammatory agent; metabolite |
| trans-metanicotine | metanicotine: RN given refers to parent cpd with unspecified isomeric designation | ||
| a 85380 | A 85380: structure given in first source; A-85380 is the S-enantiomer; A-159470 is the R-enantiomer | ||
| ar-r 17779 | AR-R 17779: structure in first source | ||
| 3-(2,4-dimethoxybenzylidene)anabaseine | 3-(2,4-dimethoxybenzylidene)anabaseine: an alpha7nAChR nicotinic receptor agonist | dimethoxybenzene | |
| 2,4,2'-trihydroxychalcone | 2,4,2'-trihydroxychalcone: structure in first source | ||
| mg 624 | triethyl-(beta-4-stilbenoxyethyl)ammonium: inhibits alpha7 nicotinic receptors; structure in first source | ||
| a 84543 | |||
| azd 0328 | spiro(1-azabicyclo(2.2.2)octane-3,2'(3H)-furo(2,3-b)pyridine): AZD-0328 is the (2'R)-isomer and D-tartrate salt; an alpha7 neuronal nicotinic receptor agonist; structure in first source | ||
| pnu-282987 | carbonyl compound; organohalogen compound | ||
| ssr180711 | SSR180711: a selective alpha7 acetylcholine nicotinic receptor (n-AChRs) partial agonist; structure in first source | ||
| ispronicline | ispronicline: a neuronal nicotinic acetylcholine receptor modulator; has antidepressant, neuroprotective, and cognitive effects; structure in first source | ||
| desnitroimidacloprid | desnitroimidacloprid: a nicotinic receptor agonist; structure in first source | ||
| crispine a | crispine A: pyrrolo(2,1-a)isoquinoline alkaloid from Carduus crispus; structure in first source | ||
| amd 070 | mavorixafor: a derivative of AMD3100; a CXCR4 blocker | aminoquinoline | |
| a 867744 | 4-(5-(4-chlorophenyl)-2-methyl-3-propionyl-1H-pyrrol-1-yl)benzenesulfonamide: positive modulator of alpha7 nicotinic acetylcholine receptor; structure in first source | ||
| a-582941 | A-582941: nicotinic acetylcholine receptor (alpha7 nAChR) agonist | ||
| evp-6124 | |||
| imidacloprid | (E)-imidacloprid : The E-isomer of imidacloprid. | imidacloprid; imidazolidines; monochloropyridine | environmental contaminant; genotoxin; neonicotinoid insectide; nicotinic acetylcholine receptor agonist; xenobiotic |
| 3-(4-hydroxy-2-methoxybenzylidene)anabaseine |