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Methodenartikel

Determining a Test Growth Hormone Effect on Kisspeptin Neurons using a Whole-Cell Patch Clamp

708 weergaven

8 juli 2025

In dit artikel

Samenvatting

Source: Silva, J. d. N., et al., Hypothalamic Kisspeptin Neurons as a Target for Whole-Cell Patch-Clamp Recordings. J. Vis. Exp. (2023)

This video demonstrates the use of the whole-cell patch-clamp technique to measure responses in kisspeptin neurons from transfected mouse hypothalamic slices. The process involves achieving whole-cell configuration and recording membrane potential changes induced by the test hormone using current-clamp mode.

Protocol

All procedures involving animal samples have been reviewed and approved by the appropriate animal ethical review committee.

1. Cell sealing for recording

  1. Ensure that all the pieces of equipment (microscope, amplifier, digitizer, micromanipulator, and others) are turned on before starting the recording.
  2. Fill the recording chamber, from a commercial brand (Table of Materials), attach to the microscope with the aCSF solution for recordings. Use a perfusion pump to constantly perfuse the aCSF at a rate of 2 mL/min.
  3. Transfer a brain slice of interest (one at a time) to the recordi....

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Resultaten

Hypothalamic neuron pathways diagram; GnRH and kisspeptin roles in hormone regulation processes.
Figure 1: Schematic diagram summarizing the whole-cell patch-clamp technique's contribution to the knowledge of the kisspeptin neurons' activity. Kisspeptin neurons (shown in green) are located in the anteroventral periventricular and rostr.......

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Openbaarmakingen

No conflicts of interest declared.

Materialen

Lijst van materialen gebruikt in dit artikel
NaamBedrijfCatalogusnummerOpmerkingen
Compounds for aCSF, internal and slicing solutions
ATPSigma Aldrich/variousA9187
Calcium chlorideSigma Aldrich/variousC7902
D-(+)-GlucoseSigma Aldrich/variousG7021
EGTASigma Aldrich/variousO3777
HEPESSigma Aldrich/variousH3375
KClSigma Aldrich/variousP5405
K-gluconateSigma Aldrich/variousG4500
KOHSigma Aldrich/variousP5958
Magnesium chlorideSigma Aldrich/variousM9272
Magnesium SulfateSigma Aldrich/various230391
NaClSigma Aldrich/variousS5886
Monosodium phosphate Sigma Aldrich/variousS5011
Sodium bicarbonateSigma Aldrich/variousS5761
Equipments
AmplifierMolecular DevicesMulticlamp 700B
DIGIDATA 1440 LOW-NOISE DATA ACQUISITION SYSTEMMolecular DevicesDD1440
Digital peristaltic pumpIsmatecISM833C
Faraday cageTMC81-333-03
Imaging CameraLeicaDFC 365 FX
MicromanipulatorSutter InstrumentsRoe-200
Micropipette PullerNarishigePC-10
MicroscopeLeicaDM6000 FS
Recovery chamberWarner Instruments/Harvard apparatus-
Recording chamberWarner Instruments640277
SpatulaFisher Scientific /variousFISH-14-375-10; FISH-21-401-20
Software and systems
AxoScope 10 softwareMolecular Devices-Commander Software
LAS X wide field systemLeica-Image acquisition and analysis
MultiClamp 700BMolecular DevicesMULTICLAMP 700BCommander Software
PCLAMP 10 SOFTWARE FOR WINDOWSMolecular DevicesPclamp 10 Standard
Tools
Ag/AgCl electrode, pellet, 1.0 mmWarner Instruments64-1309
Slice AnchorWarner Instruments64-0246

Trefwoorden

Registratie van membraanpotentiaalCurrent Clamp modusVoltage Clamp modusfluorescentie identificatie van neuronenpreparatie van hypothalamus coupesvorming van micropipet afdichtingmonitoring van cellevensvatbaarheid