reply to her post with resources
Julie Brown
Discussion Week 1 – Main Post
Ion Channels and G Proteins in Signal Transduction and Pharmacologic Targets
Ion channels and G proteins both play important roles in signal transduction, the process by which cells respond to chemical signals such as neurotransmitters and medications (Luo, Sun, & Peng, 2025). Ion channels allow ions such as sodium and potassium to move within the cell membrane (Dai, 2023). When a neurotransmitter binds to a receptor that is attached to an ion channel, the channel opens or closes to produce a response within the cell (Dai, 2023). Ion channels are responsible for responses within the nervous system (Dai, 2023). Medications such as benzodiazepines enhance inhibitory signaling in the brain (Goldschen-Ohm, 2022).
G proteins are involved in cell signaling as well, but they use a different process than ion channels. A neurotransmitter binds to a G-protein receptor and activates the cell (Cho et al., 2025). This process is slower than the Ion process but allows for a longer effect on the cell (Senese, Rasenick, & Traynor, 2018). Psychotropic medications, including antidepressants and antipsychotics, utilize the G-protein signaling pathways (Senese, Rasenick, & Traynor, 2018).
Genetics and the Risk of Mental Illness
If a patient inquired if they would develop the same mental illness as their grandmother, it would be in the best interest to understand that while genetics can increase risk, it does not always mean the individual will develop the ailment. Mental illnesses can be caused by a combination of factors such as genetic, environmental, and lifestyle factors (Stoewen, 2022). Family members may not develop any signs of mental illness. Being able to be aware of declining mental health allows for a better understanding and improved outcomes (Kirkbride et al., 2024).
References
Cho, Y. Y., Kim, S., Kim, P., Jo, M. J., Park, S. E., Choi, Y., Jung, S. M., & Kang, H. J. (2025). G-protein-coupled receptor (GPCR) signaling and pharmacology in metabolism: Physiology, mechanisms, and therapeutic potential. Biomolecules, 15(2), 291.
Dai, G. (2023). Signaling by ion channels: Pathways, dynamics and channelopathies. Missouri Medicine, 120(5), 367373.
Goldschen-Ohm, M. P. (2022). Benzodiazepine modulation of GABA receptors: A mechanistic perspective. Biomolecules, 12(12), 1784.
Kirkbride, J. B., Anglin, D. M., Colman, I., Dykxhoorn, J., Jones, P. B., Patalay, P., Pitman, A., Soneson, E., Steare, T., Wright, T., & Griffiths, S. L. (2024). The social determinants of mental health and disorder: Evidence, prevention and recommendations. World Psychiatry, 23(1), 5890.
Luo, Y., Sun, L., & Peng, Y. (2025). The structural basis of the G protein-coupled receptor and ion channel axis. Current Research in Structural Biology, 9, 100165.
Senese, N. B., Rasenick, M. M., & Traynor, J. R. (2018). The role of G-proteins and G-protein regulating proteins in depressive disorders. Frontiers in Pharmacology, 9, 1289.
Stoewen, D. L. (2022). Nature, nurture, and mental health: Part 1The influence of genetics, psychology, and biology. The Canadian Veterinary Journal, 63(4), 427430.
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