Payment & Shipping Terms:
|Product Name:||DSIP||Cas No.:||62568-57-4|
|Policy:||Re-Shipping Policy||Usage:||Pharmaceutical Material|
|Appearance:||White Lyophilized Powder||Spe:||2mg/Vial, 10vial/Box|
|HS Code:||300120002||Store At:||Cool Dry Place|
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Health Care Product DSIP for Well Sleep / Delta sleep-inducing peptide
Product Name: DSIP
Synonyms: SLEEP INDUCING PEPTIDE;WAGGDASGE;TRP-ALA-GLY-GLY-ASN-ALA-SER-GLY-GLU;TRP-ALA-GLY-GLY-ASP-ALA-SER-GLY-GLU;TRP-ALA-GLY-GLY-ASP-ALA-SER-GLY-GLU 4H2O;DELTA SLEEP INDUCING PEPTIDE;DELTA SLEEP-INDUCING PEPTIDE 4H2O;DSIP
Delta sleep-inducing peptide, abbreviated DSIP, is a neuropeptide that when infused into the mesodiencephalic ventricle of recipient rabbits induces spindle and delta EEG activity and reduced motor activities.
Many roles for DSIP have been suggested following research carried out using peptide analogues with a greater molecular stability and through measuring DSIP-like immunological (DSIP-LI) response by injecting DSIP antiserum and antibodies.
Background And Objective:
Delta sleep-inducing peptide (DSIP) is an endogenous peptide that crosses the blood-brain barrier, named after its association with natural sleep and enhanced electroencephalogram (EEG) delta rhythm. The objective of this study was to determine whether DSIP could be used as an adjunct to volatile anaesthesia in humans, our hypothesis being that DSIP is a natural hypnotic that would increase anaesthetic depth. The aims were to assess depth of anaesthesia using bispectral index (BIS), the EEG and heart rate variability (HRV), and to determine whether DSIP altered the symmetry of EEG between the left and right cerebral hemispheres.
Twenty-four female ASA I or II patients gave written, informed consent to a protocol approved by our local research ethics committee. Twelve were randomly assigned as controls to receive saline. The other 12 were randomly allocated to receive one of three intravenous bolus doses of DSIP (Clinalfa) at 25, 50 or 100 nmol kg(-1). The first administration of DSIP was while awake and the second after induction of anaesthesia with propofol and maintenance with isoflurane. BIS and EEG parameters were measured continuously using a bilateral electrode montage.
DSIP significantly increased heart rate, decreased HRV and, paradoxically, significantly reduced delta rhythm along with reducing burst suppression and increasing BIS at 25 nmol kg(-1) during isoflurane anaesthesia. DSIP also significantly altered bilateral symmetry of EEG.
DSIP probably reduced parasympathetic tone and decreased (lightened) the depth of anaesthesia measured using BIS.
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