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Showing 11 - 20 of 605359 pathways
SMPDB ID Pathway Name and Description Pathway Class Chemical Compounds Proteins

SMP0175153

Pw176840 View Pathway

Zuclopenthixol H1-Antihistamine Immune Response Action Pathway

Zuclopenthixol is a weak H1-antihistamine. H1-antihistamines interfere with the agonist action of histamine at the H1 receptor and are administered to attenuate inflammatory process in order to treat conditions such as allergic rhinitis, allergic conjunctivitis, and urticaria. H1-antihistamines act on H1 receptors in T-cells to inhibit the immune response, in blood vessels to constrict dilated blood vessels, and in smooth muscles of lungs and intestines to relax those muscles. H1-antihistamines interfere with the agonist action of histamine at the H1 receptor and are administered to attenuate inflammatory process in order to treat conditions such as allergic rhinitis, allergic conjunctivitis, and urticaria. Reducing the activity of the NF-κB immune response transcription factor through the phospholipase C and the phosphatidylinositol (PIP2) signalling pathways also decreases antigen presentation and the expression of pro-inflammatory cytokines, cell adhesion molecules, and chemotactic factors. Furthermore, lowering calcium ion concentration leads to increased mast cell stability which reduces further histamine release. First-generation antihistamines readily cross the blood-brain barrier and cause sedation and other adverse central nervous system (CNS) effects (e.g. nervousness and insomnia). Second-generation antihistamines are more selective for H1-receptors of the peripheral nervous system (PNS) and do not cross the blood-brain barrier. Consequently, these newer drugs elicit fewer adverse drug reactions.
Drug Action

SMP0175061

Pw176748 View Pathway

Zuclopenthixol H1-Antihistamine Blood Vessel Constriction Action Pathway

Zuclopenthixol is a weak H1-antihistamine. H1-antihistamines interfere with the agonist action of histamine at the H1 receptor and are administered to attenuate inflammatory process in order to treat conditions such as allergic rhinitis, allergic conjunctivitis, and urticaria. H1-antihistamines act on H1 receptors in T-cells to inhibit the immune response, in blood vessels to constrict dilated blood vessels, and in smooth muscles of lungs and intestines to relax those muscles. Allergies causes blood vessel dilation which causes swelling (edema) and fluid leakage. Zuclopenthixol inhibits the H1 histamine receptor on blood vessel endothelial cells. This normally activates the Gq signalling cascade which activates phospholipase C which catalyzes the production of Inositol 1,4,5-trisphosphate (IP3) and Diacylglycerol (DAG). Because of the inhibition, IP3 doesn't activate the release of calcium from the sarcoplasmic reticulum, and DAG doesn't activate the release of calcium into the cytosol of the endothelial cell. This causes a low concentration of calcium in the cytosol, and it, therefore, cannot bind to calmodulin. Calcium bound calmodulin is required for the activation of the calmodulin-binding domain of nitric oxide synthase. The inhibition of nitric oxide synthesis prevents the activation of myosin light chain phosphatase. This causes an accumulation of myosin light chain-phosphate which causes the muscle to contract and the blood vessel to constrict, decreasing the swelling and fluid leakage from the blood vessels caused by allergens.
Drug Action

SMP0174969

Pw176655 View Pathway

Zuclopenthixol H1 Antihistamine Smooth Muscle Relaxation Action Pathway

Zuclopenthixol is a weak H1-antihistamine. H1-antihistamines interfere with the agonist action of histamine at the H1 receptor and are administered to attenuate inflammatory process in order to treat conditions such as allergic rhinitis, allergic conjunctivitis, and urticaria. H1-antihistamines act on H1 receptors in T-cells to inhibit the immune response, in blood vessels to constrict dilated blood vessels, and in smooth muscles of lungs and intestines to relax those muscles. H1-antihistamines interfere with the agonist action of histamine at the H1 receptor and are administered to attenuate inflammatory process in order to treat conditions such as allergic rhinitis, allergic conjunctivitis, and urticaria. H1-antihistamines act on H1 receptors in T-cells to inhibit the immune response, in blood vessels to constrict dilated blood vessels, and in smooth muscles of lungs and intestines to relax those muscles. Allergies causes blood vessel dilation which causes swelling (edema) and fluid leakage. Zuclopenthixol also inhibits the H1 histamine receptor on bronchiole smooth muscle myocytes. This normally activates the Gq signalling cascade which activates phospholipase C which catalyzes the production of Inositol 1,4,5-trisphosphate (IP3) and Diacylglycerol (DAG). Because of the inhibition, IP3 doesn't activate the release of calcium from the sarcoplasmic reticulum, and DAG doesn't activate the release of calcium into the cytosol of the endothelial cell. This causes a low concentration of calcium in the cytosol, and it, therefore, cannot bind to calmodulin.Calcium bound calmodulin is required for the activation of myosin light chain kinase. This prevents the phosphorylation of myosin light chain 3, causing an accumulation of myosin light chain 3. This causes muscle relaxation, opening up the bronchioles in the lungs, making breathing easier.
Drug Action

SMP0145433

Pw147102 View Pathway

Zuclopenthixol H1 Antihistamine Neurological Sleep Action Pathway

Zuclopenthixol is an ethanolamine class H1 antihistamine used to treat insomnia and allergy symptoms such as hay fever and hives. It is also used with pyridoxine in the treatment of nausea and vomiting in pregnancy. H1-antihistamines interfere with the agonist action of histamine at the H1 receptor and are administered to attenuate inflammatory process in order to treat conditions such as allergic rhinitis, allergic conjunctivitis, and urticaria. Wakefulness is regulated by histamine in the tuberomammillary nucleus, a part of the hypothalamus. Histidine is decarboxylated into histamine in the neuron. Histamine is transported into synaptic vesicles by a monoamine transporter then released into the synapse. Normally histamine would activate the H1 histamine receptor on the post-synaptic neuron in the tuberomammillary nucleus. Zuclopenthixol inhibits the H1 histamine receptor, preventing the depolarization of the post-synaptic neuron. This prevents the wakefulness signal from being sent to the major areas of the brain, causing sleepiness.
Drug Action

SMP0143819

Pw145487 View Pathway

Zuclopenthixol Drug Metabolism Action Pathway

Drug Action

SMP0126579

Pw128180 View Pathway

Zuclopenthixol Dopamine Antagonist Action Pathway

Zuclopenthixol, also known as Zuclopentixol or Zuclopenthixolum, is an antipsychotic agent. Zuclopenthixol is a thioxanthene-based neuroleptic with therapeutic actions similar to the phenothiazine antipsychotics. Zuclopenthixol is a typical antipsychotic neuroleptic drug of the thioxanthene class. It mainly acts by antagonism of D1 and D2 dopamine receptors. Zuclopenthixol also has high affinity for alpha1-adrenergic and 5-HT2 receptors. It has weaker histamine H1 receptor blocking activity, and even lower affinity for muscarinic cholinergic and alpha2-adrenergic receptors.
Drug Action

SMP0144324

Pw145992 View Pathway

Zucapsaicin Drug Metabolism Action Pathway

Drug Action
  • Zucapsaicin

SMP0144375

Pw146043 View Pathway

Zotepine Drug Metabolism Action Pathway

Drug Action
  • Zotepine

SMP0143617

Pw145285 View Pathway

Zopiclone Drug Metabolism Action Pathway

Drug Action

SMP0126832

Pw128437 View Pathway

Zopiclone Action Pathway

Zopiclone, a nonbenzodiazepine hypnotic belonging to the pyrazolopyrimidine class, is employed for the short-term management of insomnia. Operating outside the benzodiazepine and barbiturate realms, it interacts with the gamma-aminobutyric acid-benzodiazepine (GABABZ) receptor complex, demonstrating both benzodiazepine-like and some barbiturate-like properties. By selectively binding to the brain alpha subunit of the GABA A omega-1 receptor, zopiclone's action unfolds through engagement with the benzodiazepine receptor complex and modulation of the GABABZ receptor chloride channel macromolecular complex. Its effects align with those of benzodiazepines, acting as full agonists on various GABAA receptor subunits (α1, α2, α3, α5), amplifying GABA's inhibitory actions to produce therapeutic (hypnotic and anxiolytic) and adverse outcomes. Primarily metabolized through processes like decarboxylation, demethylation, and side chain oxidation in the liver, zopiclone undergoes substantial metabolic transformation. This results in the formation of metabolites such as a weakly active N-oxide derivative (constituting around 12% of the dose) and an inactive N-desmethyl metabolite (approximately 16% of the dose). Moreover, nearly 50% of the dose is converted to additional inactive metabolites via decarboxylation, with hepatic microsomal enzymes seemingly playing no significant role in zopiclone clearance. Renowned for its distinct mechanism within the realm of nonbenzodiazepine hypnotics, zopiclone effectively addresses short-term insomnia management.
Drug Action
Showing 11 - 20 of 65006 pathways