central nervous system

γ-Aminobutyric acid (4-Aminobutyric acid) is the predominant inhibitory neurotransmitter in the central nervous system.

Cafedrine (Cafedrin) is found in tea and coffee and has a central nervous system stimulant effect.Cafedrine is often used in a 20:1 combination with a fixed dose of cortisone in the study of acute hypotension.

L-DOPA (Levodopa) is an orally active metabolic precursor of the neurotransmitter dopamine. It can cross the blood-brain barrier and be converted into dopamine in the brain. L-DOPA exhibits anti-hyperalgesic effects and holds potential in Parkinson’s disease research, and it can also be used to induce Parkinson’s disease models.

2-Hydroxy-3-methylbutyric acid is a structural analog of GHB, a naturally occurring substance found in the central nervous system, and a nootropic.

Histamine dihydrochloride (Ceplene) is the dihydrochloride salt form of histamine, an endogenous metabolic product. Histamine is an organic nitrogen-containing compound with diverse biological activities. It acts as a potent stimulator of gastric acid secretion, a bronchial smooth muscle constrictor, and a vasodilator, as well as a neurotransmitter with central nervous system activity. It is commonly used to induce gastric ulcer models in research.

Acetylcholine iodide (Acetylcolina) is a neurotransmitter found at neuromuscular junctions, autonomic ganglia, parasympathetic effector junctions, a subset of sympathetic effector junctions, and at many sites in the central nervous system.

(-)-Agelastatin A is a member of the pyrrole-aminoimidazole marine alkaloid (PAI) family, capable of inhibiting β-catenin, GSK-3β, and osteopontin (OPN), exhibiting antiproliferative activity against various cancers such as leukaemia and breast cancer, and possessing a certain ability to penetrate the central nervous system (CNS).

Reserpinine, a natural product, is a kind of indole alkaloid, which can reduce blood pressure and slow down heart rate. Its effect is slow, mild and long-lasting, and it has a long-lasting calming effect on the central nervous system.

In the central nervous system, 2-Arachidonoylglycerol is a second endogenous cannabinoid ligand

Anandamide ((5Z,8Z,11Z,14Z)-N-(2-Hydroxyethyl)icosa-5,8,11,14-tetraenamide), an immune modulator, acts via not only cannabinoid receptors (CB1 and CB2) but also other targets (e.g., GPR18/GPR55) in the central nervous system.

Estetrol(Donesta) is an orally available, selective modulator of the estrogen receptor, a naturally occurring estrogen synthesized by the human fetal liver during pregnancy.Estetrol has effects on the endometrium or central nervous system, but is antagonistic to the breast.Estetrol may help to reduce thrombosis at low concentrations. Estetrol may be used to relieve menopausal symptoms.

Kainic acid is an excitatory amino acid receptor agonist (EC50=16.2 μM). Kainic acid is an effective excitatory toxic agent. Kainic acid induces epileptic seizures.

Scopolamine hydrobromide is a tropane alkaloid derived from the Solanaceae family. It is a high-affinity (nanomolar level) muscarinic receptor antagonist and can also reversibly inhibit 5-HT₃ receptor responses (IC₅₀ = 2.09 μM). It is commonly used to induce animal models of Alzheimer's disease or memory impairment.

Glycine (Standard) is a reference standard for research and analysis in studies involving glycine. Glycine is an inhibitory neurotransmitter in the central nervous system and a co-agonist of glutamate, enhancing NMDA receptor excitability. It is found in gelatin and silk fibroin and is used as a nutrient in medical treatments.

Thiocolchicoside (Thiocolchicine 2-glucoside analog) (Muscoril, Myoril, Neoflax) is a muscle relaxant with anti-inflammatory and analgesic effects. It acts as a competitive GABAA receptor antagonist and also glycine receptor antagonist with similar potency and nicotinic acetylcholine receptors to a much lesser extent. It has powerful convulsant activity and should not be used in seizure-prone individuals.

Phosphatidylserine is a naturally occurring phospholipid that comprises 2-10% of total phospholipids in mammals and is enriched in the central nervous system, particularly the retina. It is anionic and found mainly on the inner leaflet of the cell membrane. It is biosynthesized from phosphatidylcholine or phosphatidylethanolamine by phosphatidyl synthase 1 (PSS1) or PSS2, respectively, in the endoplasmic reticulum and can be reversibly converted back by the same enzymes. It can also be irreversibly converted to phosphatidylethanolamine by phosphatidylserine decarboxylase in the mitochondria. Phosphatidylserine binds to T cell immunoglobulin mucin type 1 (TIM-1) and TIM-4 receptors as well as brain-specific angiogenesis inhibitor 1 (BAI1), leading to anti-inflammatory and anti-atherosclerotic effects. It is also a cofactor involved in the activation of various signaling pathways through activation of protein kinase C, neutral sphingomyelinase, and c-Raf-1 protein kinase among others. Phosphatidylserine is externalized during apoptosis by scramblases in the plasma membrane as a signal for phagocytes to engulf the cell. Phosphatidylserines (bovine) is a mixture of bovine phosphatidylserines containing fatty acids with variable chain lengths at the sn-1 and sn-2 positions.

1. Resibufogenin (Bufogenin) is a cytotoxic steroid isolated from the Chinese drug ChanSu. 2. Resibufogenin can inhibit rectifier potassium current ( I K ) and transient potassium current ( I A ), it has pathological effects on central nervous system. 3. Resibufogenin corrects hypertension in a rat model of human preeclampsia, it not only prevents the advent of hypertension and proteinuria, but also the development of intrauterine growth restriction.4. Resibufogenina's major metabolic pathway in the human liver is CYP3A4 dominantly mediated 5β-hydroxylation .

Wilforine, a sesquiterpene pyridine alkaloid, is an important bioactive compound in T. wilfordii plants and is effective in treating idiopathic pulmonary fibrosis. Wilforine exhibits an anti-inflammatory effect, which might be mediated by the down-regulation of inflammatory factors TNF-α, IL-6, and NO. Additionally, it has insecticidal activity by inhibiting the Na+-K+-ATPase in the central nervous system.

Ganglioside GM1 is one of the major sphingolipids (GSLs) on the cell surface of the central nervous system (CNS), which is protective of the CNS and is used in the study of neurological disorders.Ganglioside GM1 exerts protection against glutamate excitotoxicity through its oligosaccharides in wild-type and amyotrophic lateral sclerosis motor neurons.

2-Hydroxy-3-methylbutyric acid is a structural analog of GHB, a naturally occurring substance found in the central nervous system, and a nootropic.

Cnidicin has anti-allergic and anti-inflammatory activity, it inhibits the degranulation of mast cell and the NO generation in RAW 264.7 cells(IC50 value, 7.5 microM). Cnidicin exhibits a significant inhibition on the proliferation of cultured human tumor

Strictosidinic acid has an antiradical action against DPPH, it has a promising effect in the central nervous system.

Yangambin is a selective antagonist of the cardiovascular effects of platelet activating factor (PAF); it has hypotensive effect, which is probably due to a peripheral vasodilatation that involves, at least, the inhibition the Ca2+ influx through voltage-gated Ca2+ channels. Yangambin also has central nervous system activity.

3-Methoxy-4-hydroxyphenylglycol (HMPG), a metabolite of norepinephrine degradation in the brain, serves as an indicator of central nervous system noradrenergic activity and is useful for research on depression, chronic schizophrenia, and other conditions [1].