

Nutrition in Neuroscience Part 2 | Mastering Nutrition #41
01:39:04
Glutamate Is Made In The Brain
- Glutamate is the primary excitatory neurotransmitter used by most CNS excitatory neurons.
- Brain glutamate is largely synthesized inside the brain rather than imported from the diet.
Glucose Fuels New Glutamate
- De novo brain glutamate is produced from glucose via the citric acid cycle and alpha-ketoglutarate.
- Ketones don't supply oxaloacetate so ketogenic states reduce new glutamate synthesis without glucose or amino acid precursors.
Hyperglycemia May Spike Brain Glutamate
- Hyperglycemic spikes could drive brain glutamate spikes and potentially trigger excitatory events.
- This connection may help explain why low-glycemic diets or ketosis can reduce seizures in some epilepsy cases.
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Introduction
00:00 • 4min
Neuropeptides and Small Molecule Neurotransmitters
04:15 • 5min
Keeping Glutamate Exceptionally Low in the Brain
09:14 • 3min
The Importance of Glutamate in the Central Nervous System
12:01 • 6min
The Ketogenic Diet Effect on Epilepsy
18:03 • 6min
Metabotropic Glutamate Receptors
23:41 • 3min
The NMDA Receptor and Its Mechanism of Action
26:36 • 3min
What's Unique About the NMDA Receptor?
29:54 • 3min
The NMDA Receptor and Long-Term Potentiation
32:43 • 3min
How Long-Term Memory Is Important to Your Memory
35:43 • 4min
How GABA and Glycine Work Together?
40:07 • 5min
Is the Keto Diet Effective for Epilepsy?
44:43 • 5min
GABA in Foods Is Relevant if GABA in Supplements Is Relevant
49:49 • 4min
GABA and the Synaptic Cleft
53:26 • 5min
What Is the Best Diet for Collagen?
58:22 • 2min
Is There a Role for Collagen Supplementation?
01:00:29 • 5min
Is Alpha Glycerophosphocholine a Choline Supplement?
01:05:27 • 2min
The Biogenic Amino Acids
01:07:14 • 4min
Dopamine Signals Parkinson's Disease
01:10:46 • 3min
How Does Dopamine Affect Your Mental Stability?
01:13:50 • 3min
How Does Methylation Clear Histamine?
01:16:27 • 4min
Serotonin in the Synaptic Cleft Can Cause Depression
01:20:33 • 2min
ATP, the Primary Energy Currency of the Gout Diet
01:22:50 • 4min
What Are Peptide Neurotransmitters?
01:26:20 • 2min
What Are Peptide Neurotransmitters?
01:28:18 • 3min
Is Your Vitamin C Deficient?
01:31:32 • 3min
The Endocannabinoids That Are Found in Fish
01:34:22 • 4min
Part 2 of how NUTRITION has a HUGE impact on your BRAIN! Everything in your brain is something you ate, something you made from something you ate, or, in a few cases, something your mother ate. Nutrition impacts your mental and emotional health, the function of your five senses, and your conscious and unconscious control over your body movements. Join me as I lead you in a safari through the textbook, “Neuroscience,” pointing out along the way all the interesting connections to nutrition. Listen in for part 2 on the NEUROTRANSMITTERS!
- 0:00:37 Cliff Notes
- 0:04:15 Overview of neurotransmitters
- 0:06:55 Glutamate is the primary excitatory neurotransmitter.
- 0:14:08 De novo glutamate in the central nervous system is overwhelmingly made from glucose.
- 0:16:55 Ketogenic diet for epilepsy
- 0:20:12 Glutamate metabolism
- 0:23:42 There are two classes of glutamate receptors: ionotropic and metabotropic.
- 0:24:45 There are three classes of metabotropic glutamate receptors, their actions are complex and variable, and they can be excitatory or inhibitory.
- 0:25:05 The ionotropic glutamate receptors include AMPA receptors, NMDA receptors, and kainite receptors, all of which have a depolarizing effect by allowing sodium and potassium to flow freely through them.
- 0:27:47 Four unique things about the NMDA receptor: magnesium is required to block its ion channel, it’s important for coincidence detection, it allows calcium to come into the cell, and it has a glycine-binding site.
- 0:33:16 Long-term potentiation (LTP) and long-term depression (LTD) are important for forming memories, and glutamate receptors play an important role.
- 0:40:48 GABA and glycine are the two primary inhibitory neurotransmitters of the central nervous system.
- 0:44:04 GABA and presumably glycine can be stimulatory if there is more chloride on the inside of the neuron than the outside.
- 0:48:53 Evidence that GABA might cross the blood-brain barrier
- 0:51:44 GABA in foods
- 0:54:14 GABA metabolism in the nervous system
- 0:56:08 Glycine
- 1:02:02 Acetylcholine
- 1:07:50 The biogenic amines include histamine, serotonin, and the catecholamines (dopamine, norepinephrine, and epinephrine).
- 1:08:30 Synthesis of the catecholamines
- 1:10:46 Dopamine
- 1:14:08 Norepinephrine
- 1:16:32 Histamine
- 1:20:15 Serotonin
- 1:23:10 ATP and adenosine
- 1:26:38 Peptide neurotransmitters
- 1:27:00 Hypothalamic releasing hormones include thyrotropin-releasing hormone (TRH), corticotropin-releasing hormone (CRH), and gonadotropin-releasing hormone (GnRH).
- 1:29:15 Melanocyte-stimulating hormone (MSH)
- 1:29:32 Oxytocin
- 1:30:18 Vasopressin
- 1:30:57 Synthesis of the neuropeptides Substance P, MSH, oxytocin, and vasopressin requires glycine, zinc, copper, and vitamin C.
- 1:34:24 Endocannabinoids and the importance of arachidonic acid, EPA, and DHA
Access the show notes, transcript, and comments here:
https://chrismasterjohnphd.substack.com/p/054-nutrition-in-neuroscience-part