Final Blog Post

As my last neuroscience course in undergraduate I have learned a lot more about how to apply the knowledge I have learned to practical things in life. During the semester, in this course we were able to learn the material the first few weeks and then apply our knowledge about the different neuro-pathways to the different research papers we would dive into each week. These research papers were typically about certain conditions and our last research papers was on Nootropics. Below are how Concordia’s goals transitioned into the neurochemistry course.

  1. Instill a love for learning

From this course, I learned more about the enjoyment of looking into certain questions to gain more knowledge on a question. In the age of the internet, almost any question can be answered, but it is a matter of getting to think of those questions that fosters more learning. In preparation for Wednesdays, we would gather questions we thought while reading and discussing the paper together to look into further and discuss with our classmates what we found. This helped me to get that spark for learning again.

2.  Develop foundational skills and transferable intellectual capacities

In this course I learned how to communicate a more interesting story as it relates to science compared to just saying “and this is how this happens” with a lot of scientific jargon. One method that we used in this course was ABT, which formats the story as And, But, and Therefore. Which I found to be more affective at having someone who is unfamiliar with the science be able to understand it.

3.  Develop an understanding of disciplinary, interdisciplinary and intercultural perspectives and their connections

In neurochemistry I was able to learn how to effectively write science in the form of a blog post and have good references/citations throughout. This overall will help to foster better communication as it relates to explaining “the science” especially since in the future I hope to become a registered dietitian. There is a lot of science talk in the field and acquiring this skill will help in my future career.

4.  Cultivate an examined cultural, ethical, physical and spiritual self-understanding

I loved how this course related back to nutrition in unique ways, along with other disciplinary. Almost every topic we could relate it back to nutrition, which especially sparked my interest as a double major in both nutrition and neuroscience.

5.  Encourage responsible participation in the world

The last goal goal Concordia has for liberal learning is to encourage responsible participation in the world and we did just that in this course. In our big group discussions on Fridays we were able to talk about the topic that week and tie it to what is going on in the world. While we did not take action with our discussions about certain things we brought more awareness to the subject and it was fun to hear everyone’s side on certain issues.

 

Overall, I am really going to miss my undergraduate curriculum and am going to miss this course. I am so happy that I got to end with neurochemistry as being one of my last classes, I have really enjoyed it. 🙂

#RollCobbs Baby

Concordia has shown me and taught me so much more than I could ever imagine. I can’t put into words how grateful I am to all the people who has led me through the last four years of my life. All I have to say is don’t let it go by so fast, and trust me it really does. Everyone always says that, but no one believes that it’s true until it all happens.  Get involved as much as you can, make as many friends as you can, make great memories, and make the best out of your college experience. Live your best life, I know I sure did!

Concordia Learning

Learning is a key part of every college institution; it helps us grow and share ideas with those around us. Learning is especially important at Concordia College, a liberal arts school that has five goals for learning. (1) Instill a love for learning. The four years I have attended Concordia have shown me that learning can be fun, and it isn’t just about memorizing and filling in the correct answer on an exam. (2) Develop foundational skills and transferable intellectual capacities. The skills that are taught at Concordia will help its students to go out and share with the world. I have become much more confident when sharing my thoughts and ideas because Concordia has taught me that everyone’s thoughts are important, and they’re all worth sharing. (3) Develop an understanding of disciplinary, interdisciplinary, and intercultural perspectives and their connections. Coming from a predominantly white high school, my eyes were opened to different cultures, religions, and lifestyles. I’ve been able to learn about many different cultures and religions while at Concordia, not just in my classes but also in my everyday life. (4) Cultivate an examined cultural, ethical, physical, and spiritual self-understanding. This fourth goal is one of the most important goals from the five that Concordia introduces, I think. Concordia expresses that everyone should be themselves and not be afraid to express what they believe in. This is taught during class sessions, outside of class during cultural events, and many professors believe everyone should show their identity. (5) Encourage responsible participation in the world. This final goal has been taught through participation in class, participation outside of the classroom, and attending events outside from the college. I’ve started to become more responsibly engaged in the world by interacting with people from different cultures, listening to others who I disagree with, and allowing for everyone to express themselves no matter what.

Freshman year soccer.

My College Journey

I started off my freshman year at Concordia as a Biology major, hoping to take the Premed route, but that quickly changed after taking a few biology and chemistry classes. I was always interested in how the body worked and why it did the things that it did, but college classes are hard. I was minoring in psychology as the time, as well. About halfway through my sophomore year, I switched to a double major in neuroscience and psychology. I’ve been enjoying this much more, mostly because there’s less biology and chemistry involved. Don’t get me wrong, there’s still a bit of the two topics but nothing I can’t handle. I had never taken a chemistry class before coming to college, and I really struggled through the few chemistry courses I did take. Neurochemistry has been, by far, my favorite chemistry course. The main reason is because of how the class is structured. I loved that every Monday, Wednesday, and Friday there was a set schedule. For Monday class I had to read an article, complete a worksheet based on that article, and discuss in class on Monday. For Wednesday, we would each be assigned a topic and would have to research and report on the topic to the class. And on Friday, we would split up into two different groups and students would lead a discussion. I have never been in a class that was structured the way Neurochemistry with Dr. Mach is. I was worried that I wouldn’t understand this class, but I did, and I enjoyed the entire semester of it.

 

Why Liberal Arts?

A liberal arts college has a goal to help students learn about everything and gain knowledge in many different places. I learned this through taking many different required and elective courses. As a student at Concordia, we are required to take two religion courses, PEAK courses, and a language course. At first, I wasn’t a fan of taking so many required courses that I thought wouldn’t have anything to do with my future. But I’ve enjoyed being emersed in the many different courses that Concordia has provided. If I were to highlight something on my resume that I have improved upon during my time at Concordia, I would be sure to mention that I have learned how to talk with others who I don’t agree with. Attending classes that were required to graduate introduced me to a lot of people who I would never have met. I enjoyed chatting with those who I disagreed with because it opens so many different possibilities.

The famous Concordia ring day!

What Now?

The last four years have gone by faster I could have imagined, but I enjoyed every minute of it. Being involved in college athletics is hard to balance with schoolwork but that was one of my favorite parts about these four years. I will be back for an extra semester, but that doesn’t mean I won’t miss what the past four years have provided for me. I want to use all the skills that Concordia has provided to me in the future. I want to be able to communicate effectively with others, share my thoughts, and fight for what I believe in. I hope to go into the medical field, work with children, and do something that has to do with neuroscience and psychology combined. I know Concordia has prepared me for whatever I decide to do, and I sure am going to miss all the connections and memories I made. #RollCobbs

 

Goodbye, Concordia: Reflecting On Four Years of Growth and How Neurochemistry Tied it All Together

My four years at Concordia have been nothing short of amazing. I have grown so much personally, emotionally, and academically, and I know that is all thanks to Concordia’s focus on liberal learning.

My Unexpected Chemistry Journey

Dr. Wyllie, Olivia, and I spent the greatest summer ever together in organic chemistry

I came to Concordia with an undecided major, but knew I wanted to be on the pre-med track. I felt my science experience in high school was not as good as every other pre-med my age, so I had no confidence in myself majoring in any STEM discipline starting out. My chemistry class in high school consisted of watching Bill Nye or doing homework for other classes because we had a long-term sub who did not know chemistry. Basically, Chem 127 was my first chemistry class ever. I fell into the pre-med default of a biology major early on, very much disliked it (I am not much of a plant girl – ecology was my last straw), and after taking organic chemistry I knew chemistry was where I wanted to be. I love math and I love puzzles, and that is what chemistry is! The beauty of my journey, though, is that as much as I disliked biology, I could not have enjoyed chemistry without it because my biology courses taught me how to study and how to piece things together. This is just one example of interdisciplinary perspectives coinciding in my liberal arts education.

Neurochemistry was everything I have ever wanted in a class. I love chemistry, but I also love the human body and I have been dreaming of the day when these two subjects would come together somehow. I lived that dream my final semester at Concordia! I found that neurochemistry easily checked all five boxes of Concordia’s liberal learning goals, but there are three very prominent goals that this class fulfilled the most for me as a graduating student.

  • Neurochemistry instilled a love for learning.                                                      The material in this class was something that made me excited to read the research articles each week, because of the various topics’ prevalence, recency, and relatability. I found that the things we were learning about diseases or drugs would somehow arise in my everyday life allowing me to apply my knowledge and educate those around me! This is something that has always made subjects like anatomy and organic chemistry more enjoyable for me because I could always find something in the real world to utilize my new knowledge and quiz myself with! I found myself doing research for fun in this class and developing a fascination for signaling cascades which was something I despised prior to this semester.
  • Neurochemistry helped to develop foundational skills.                                  From this semester alone, I did more primary article reading, public speaking and science communication, critical thinking, and interdisciplinary connection than all seven of my previous semesters combined. These skills are so incredibly important, and I will carry them with me throughout my further education in medical school (let’s hope I make it there). The thing I loved the most about organic chemistry was how everything could be pieced together like a puzzle, and I found that neurochemistry was very similar in that way too! This was especially highlighted on our exams which I found to be very fun. As a doctor one day (hopefully), this skill of piecing bits of information together will also be  important along with the many other skills gained from this course.
  • Neurochemistry cultivated an examined physical, and spiritual self-understanding.                                                                                                                The last three semesters have been tough for me. I have never been so burned out and so exhausted in my entire life. With medical school applications and the MCAT getting closer, I have questioned my future plans so much feeling as though I will never be good enough to live my dream of being a doctor. Imposter syndrome at it’s finest! With this burn out, I lost my enjoyment and love for learning. Neurochemistry was my saving grace. This course reminded me about how much I love problem solving, listening to other people’s inputs and ideas regarding an issue, and how much I just love science. Having the ability to discuss medical issues using  anatomy, physiology, and chemistry was the refresher I needed academically, and it kept me going on my medical journey! Neurochemistry is one of my favorite classes I have ever taken for this reason.
Toni, Kiley, and I happily receiving our bumper stickers at the end of PChem!

Concordia’s liberal arts education provided me such perfectly interconnected knowledge the last four years. Each semester, without fail, I found ways in which all my courses were lining up in some way (even the one semester that I had PChem, Biochem, and Religion), and I was constantly reminded that many concepts, especially the ones you dislike, always come back for reiteration and application because they are actually important. To this day, I am still using the concepts I learned as a freshman! Neurochemistry was truly the icing on the cake that was my time at Concordia. This class utilized my primary article reading skills, research skills, communication skills, anatomy and physiology knowledge, biochemistry and organic chemistry knowledge, and psychology knowledge that I have developed over the last four years. While reviewing a lot of material that I had forgotten from previous years, I also learned so much from this course and gained a tremendous understanding of what it means to be a Cobber and have the privilege of receiving a liberal arts education. Not to mention that I had some of my most favorite people ever in this class who have helped make my chemistry experience even more amazing. They even made suffering through PChem enjoyable which is impossible. I love my “What In the H Hat” group (it’s a PChem joke) so much! I truly could not imagine a better course than neurochemistry to end my time at Concordia with!

Thank you Concordia and the Concordia Chemistry Department. I will miss you!

The Truth of Psychopathy

What is Psychopathy

The term psychopathy gets thrown around quite a bit to describe someone’s behavior that demonstrates a lack of empathy, but what really is it? When referring to the DSM-5 psychopathy is not going to be found, since it is actually classified as an extreme form of antisocial personality disorder (ASPD). The characteristics are hostility, aggression, impulsivity, callousness, manipulation, and deceitfulness. Therefore, psychopathy is commonly associated with violent offenders, which is true, but not in all cases: psychopathy is present in 1-3% of the general population and 10-30% of incarcerated offenders.

What Makes a Psychopath

Individuals diagnosed with extreme ASPD experience dysregulation in glucose metabolism, opioidergic neurotransmission, and gene specific dysregulation. Research has found a decrease in opioid receptor expression which explains the impulsive behavior as individuals act out to stimulate the receptor through rewarding effects. The abnormal glucose metabolism is under functioning leading to hypoglycemia in individuals. Long terms hypoglycemia could explain the aggressive behavior displayed by diagnosed individuals. Major genes associated with psychopathy are: RPL109, ZNF132, CDH5, and OPRD1. RPL109 and ZNF132 are upregulated and CDH5 and OPRD1 are downregulated. ZNF132 is expressed in the cerebellum, which regulates social behavior through dopamine release. Research has found that the neuronal expression of RPL109 and ZNF132 is abnormal. ORPD1 encodes for the opioid receptor, therefore the downregulation of this gene would explain the decrease of opioid receptors. All of these genes except ORPD1 have also been linked to Autism.

Nature vs Nurture

Psychopathy has been linked to father to son inheritance. Although not all diagnosed psychopaths had a psychopathic father. Studies have explored environmental factors but there has not been a statistical significance in diagnosed psychopaths and environmental influences. However, it is speculated that environmental factors could exacerbate genetic factors. Additionally, it is known that early childhood stress alters gene methylation and expression and childhood maltreatment and abuse increase reactive aggression. These factors could increase psychopathic symptoms but have not been linked to cause psychopathy. Therefore, psychopathy is viewed to be most influenced by nature and not nurture.

Treatment

There is currently no cure for psychopathy but there are treatments to make the condition manageable. The major treatments are therapy and medication. Cognitive Behavioral Therapy (CBT) works to correlate existing thought patterns to positive outcomes. The different medications being explored are mood stabilizers, antipsychotics, and naloxone. Mood stabilizers are used to reduce agitation and potentially violent acts. Antipsychotics are used to reduce violence and aggression and lessen the urge to harm others. Naloxone as a partial opioid receptor agonist may upregulate the opioid receptor rate in diagnosed psychopaths and counteract the symptom of low opioid receptors. Using treatments in combination would provide the most effective outcome.

Conclusion

The changes in gene expression account for the upregulation of RPL109 and ZNF132 and the downregulation of OPRD1 and CDH5. The dysregulation of these genes results in abnormal glucose metabolism and a decrease in opioid receptors in psychopathic individuals. Research has explored if psychopathy is brought on by genetics or environmental factors and has found that psychopathy is most likely genetic but can be exacerbated by environmental influences.

References

[1] Tiihonen, J., Koskuvi, M., Lähteenvuo, M. et al. Neurobiological roots of psychopathy. Mol Psychiatry 25, 3432–3441 (2020). https://doi.org/10.1038/s41380-019-0488-z.

[2] Therapist.com. What is a psychopath? Signs, causes, treatments. (2022). https://therapist.com/disorders/psychopathy/.

Sleep is learning

Introduction

Many college students find themselves asking this question. Students wrestle with the thought of whether their exam scores will be better if they stay up all night studying or if they get 8 hours of sleep. Research has found that learning occurs during sleep and is therefore more beneficial to go to sleep than stay up and study. While asleep memory consolidation occurs in the hippocampus by the activation of CRE-mediated transcriptional pathway through REM sleep. Disruption of the circadian oscillations by lack of sleep leads to impaired memory formation.

Sleep stages

While asleep the brain goes through four different stages of sleep each ranging in time and is characterized by different waves and stages of wakefulness. A complete cycle of all stage’s averages about 90 minutes where the cycle repeats all night getting progressively longer through the night. NREM is made up of stages 1-3 and stage 4 is REM sleep.

Stage 1

Stage one is a non-REM stage that makes up 1-7 minutes out of a 90-minute cycle. This stage is characterized by the person falling asleep, slowing brain activity, and relaxing of the body. During this time the brain is experiencing alpha waves. Without any disturbances the quicker an individual can enter stage 2.

Stage 2

Similar to stage 1, stage 2 is also classified as non-REM but can last between 10-25 minutes. Unlike stage 1 that gradually shortens through the night, stage 2 becomes longer and accounts for half the amount of sleep time that night. Brain waves also shift from alpha to theta waves allowing the body to become relaxed, slowing of breathing and heart rate, and a drop of temperature. The brain also starts experiencing bursts of activity, sleep spindles and k complexes, that help the brain block out external stimulation to prevent being awakened.

Stage 3

Stage 3 or slow wave sleep is characterized by delta waves and is still non-REM sleep. At the beginning of the night this stage can last from 20-40 minutes but decreases through the night to allow more time to be spent in REM sleep. During this stage individuals are harder to wake up and are experiencing deep relaxation, a decrease in muscle tone, breathing rate, and pulse. The benefits of slow wave sleep are that it allows the body to grow and recover while strengthening the immune system.

Stage 4

The final stage of a complete sleep cycle is REM sleep. REM sleep occurs 90 minutes into the sleep cycle and time spent in this stage increases throughout the night. While in REM sleep the individual experiences muscle atonia, temporary paralysis, rapid eye movement, fast breathing, and an increased pulse. The brain waves during this stage mimic the brain waves of when the individual is awake, resulting in dreams and memory consolidation.

Memory Consolidation and Learning

The memory consolidation pathway activation has been linked to REM sleep. During REM sleep the brain experiences an influx of calcium ions through NMDA receptor activation. Calcium and cAMP signals activate the MAPK pathway, which activates the Calcium, cAMP, Response Element (CRE) mediate-transcription pathway. The cAMP/MAPK/CRE pathway undergoes a circadian oscillation in REM sleep. When disruption occurs to this oscillation memory persistence is impaired. Therefore, consistent and quality sleep is imperative to allow for memory formation to occur and to solidify concepts while asleep.

Conclusion

To solidify memories and gain a better understanding of a topic it is best to sleep on it. By going to sleep the body enters REM sleep where the cAMP/MAPK/CRE pathway is activated. The continuous activation of this pathway allows for the consolidation of memories. Therefore, instead of studying all night and trying to memorize information it is better to read it over and go to sleep and let your brain consolidate the information for you, allowing you to remember information for the exam and not suffer from sleep deprivation.

References

[1] Saini, R., Jaskolski, M. & Davis, S.J. Circadian oscillator proteins across the kingdoms of life: structural aspects. BMC Biol 17, 13 (2019). https://doi.org/10.1186/s12915-018-0623-3

[2] Suni, Eric. Stages of sleep. Sleep Foundation (2023). https://www.sleepfoundation.org/stages-of-sleep

[3] Xia, Z.; Storm, D. (2017). Role of circadian Rhythm and REM sleep for memory consolidation. Neuroscience Research 118, 13-20. https://doi.org/10.1016/j.neures.2017.04.011

The Endocannabinoid System: Impacted for Centuries

What is the endocannabinoid system?

The endocannabinoid system is a neuromodulatory system that is important in the central nervous system for the role it plays in maintaining synaptic plasticity and homeostasis in the brain. This system controls mood, pain, perception, learning and memory, along with other things as well. It also has a neuroprotective role during traumatic brain injuries. An important part of the endocannabinoid system includes the cannabinoid receptors CB1 and CB2 along with a few others. The CB1 receptor has been connected to pathophysiological events ranging from memory deficits to neurodegenerative disorders. The CB1 receptor, therefore, is very important in maintaining well-being. But what is the CB1 receptor exactly that makes it so important for human health? It is one of the most commonly found G protein coupled receptors in the central nervous system, specifically in the neocortex, hippocampus, basal ganglia, cerebellum, and brainstem. A receptor found in such high quantities is bound to play a very impactful role in brain homeostasis. They specifically bind to cannabis sativa, more commonly known as marijuana and THC. On the other hand, CB2 receptors have a more defined pattern of expression and are primarily found in cells and tissues of the immune system. CB2 receptors are associated with inflammation and are localized to microglia.

This figure illustrates the differences in the roles of the CB1 and CB2 receptors. (3)

Cannabis

THC and CBD (cannabidiol) are both cannabinoids that are derived from cannabis plants. While CBD does not produce the high sensation often associated with cannabis, THC absolutely does. THC is a cannabis that has over 60 ligands for CBs, so exposure to it can cause paradoxical effects in humans like relaxation, dysphoria, tolerance, and dependence. However, these effects are blocked with a selective blocker of CB1 receptors. This is because THC must bind with the CB1 receptors to produce a sense of euphoria. Furthermore, THC has positive effects on spasms and pain associated with MS. THC may show improvement in those with multiple sclerosis due to the link between CB1 and CB2 receptors and anti-inflammation effects in CNS. For other common medical purposes, THC has benefits to reduce pain, insomnia, low appetite, nausea, anxiety, etc. However, people might prefer CBD over THC because of the lack of side effects that can occur with THC. CBD has also been shown to help with conditions like seizures, inflammation, pain, mental disorders, migraines, depression, and anxiety.

A long history

Cannabis has been around for quite a long time in different cultures across the world. Cannabis was officially attested to nearly 12,000 years ago near the Altai Mountains in Central Asia. South-East Asia has also been proposed as an alternative region for the primary domestication of cannabis where it was used for fibers for ropes and nets, food, and seeds for oil. However, as for medical purposes, the earliest records point to usage in China. The discovery of the curative
properties of these plants was said to be made by Shén Nóng, a mythical emperor whose name means the Divine Farmer in the 20th century BC. Later, Europe rediscovered the medicinal and psychoactive properties of cannabis through the translation of Arabic books and manuscripts followed by the scientific observations made by physicians of their time. Eventually, Western medicine became quite popular in the late 19th and early 20th century. During this popularization, Queen Victoria took cannabis for cramps, while Empress Elisabeth of Austria took it for cough and appetite stimulation. While it was used often in the past, it is sort of a taboo in our current American society. Today, telling a friend you took cannabis for cramps may raise some eyebrows. Nevertheless, it is still making a comeback for its medical purposes in the healthcare system today.

A handy timeline of the history of cannabinoids. (2)

Conclusion

The endocannabinoid system, composed of two primary receptors CB1 and CB2, is important in brain homeostasis. Cannabis has been around for centuries and while research on it has not been done in depth, there is enough proof of the effects that it can have on human health and well-being. For years, cannabis has been medically used in different regions of the world. Today, it is making a medical use comeback, although it also has negative side effects that make people hesitant on relying on it for medicine.

Citations

  1. Kendall, D. A., & Yudowski, G. A. (2017). Cannabinoid receptors in the central nervous system: Their signaling and roles in disease. Frontiers in Cellular Neuroscience, 10. https://doi.org/10.3389/fncel.2016.00294
  2. Hiding in plain sight: The discovery of the endocannabinoid system // International League Against Epilepsy. (n.d.). Retrieved May 2, 2023, from https://www.ilae.org/journals/epigraph/epigraph-vol-21-issue-1-winter-2019/hiding-in-plain-sight-the-discovery-of-the-endocannabinoid-system
  3. The endocannabinoid system: How cannabinoids take effect. (2019, November 15). https://www.encore-labs.com/the-endocannabinoid-system-how-cannabinoids-take-effect
  4. Holland, K. (2020, July 20). CBD vs. THC: What’s the difference? Healthline Media. https://www.healthline.com/health/cbd-vs-thc
  5. Crocq, M.-A. (2020). History of cannabis and the endocannabinoid system. Dialogues in Clinical Neuroscience, 22(3), 223–228. https://doi.org/10.31887/DCNS.2020.22.3/mcrocq

Nootropics or Just Cut Out Stress?

If when reading this, is your first-time hearing about Nootropics. Don’t invest too much into it. Nootropics are often referred to “Smart Drugs” or “Cognitive Enhancers.” Advertising according to a 2021 polars market research report valued the nootropic market at 10.69 billion dollars. It event predicted to have a strong increase. Why am I telling you this? Well, the effects of certain drugs are all a bit blurred. Certain natural supplements have showed support in increasing cognitive function.  Yet it should not be expected to increase you IQ score. Yet that is how some advertising makes them seem. I personally like to think of them as something to aid in the brain’s resilience.

So many things factor into our cognitive function like genetics and environment. Taking a gummy supplement should not be the only thing you do in hope of protecting it. Creating stimulation environment, adding thing of value to you day to day life greeting effects your overall health. I’d like to think of it as the classic saying “use it or lose it.” Environment enrichment has been shown to increase BDNF and strengthen the communication between neurons. In animal’s studies enriching an environment was done by giving them bigger enclosures or things where they can explore. One study added a running wheel. Another way was social settings. This study reported by changing these environmental factors, change the rate of neuronal cell death and inflammatory elements in the brain.

How does this exactly happen?

Cortisol is a major factor. Cortisol is a hormonal steroid produce due to stress. After adrenaline is produced in your body the hypothalamic pituitary adrenal (HPA) axis. This system gives humans their flight or fight instincts. I am sure you have heard the crazy stories people have done while experiencing this. This walked of a major crash, felt no pain at the time. Yet have you ever thought of the impact of the neurochemistry that needs to happen to allow this. The HPA axis plays roles in the metabolic, immunity, cardiovascular and cognitive systems.

https://www.healthdirect.gov.au/the-role-of-cortisol-in-the-body#:~:text=Cortisol%20is%20a%20steroid%20hormone,cortisol%20can%20cause%20health%20problems.

Well car accidents are not the only thing that triggers this cascade. Stressful events such as arguments, unsafe interactions, poverty, and childhood trauma. There are endless studies done about the effects of being raised in an abusive home or poverty and how it effects cognitive health.

Exposure to stressors in early life and triggering this pathway causes a tolerance to build up. In a study baseline cortisol level of kids didn’t not rise as much to “stressful images” then for kids who did not experience as many stressful evets. Their baseline was actually reported to be higher in general.  One study did mention if having a very severe traumatic experience, but not common. Showed to be more sensitive to stress later on in life. Another study looked at poverty, at ages 6-10 nightly cortisol levels had a clear correlation to be higher if their parents had a lower reported income. In the ages of 10 to 16 not only the cortisol levels, but BMI, and blood pressure had a correlation as well.

Wouldn’t it be good to have a lower tolerance to stress?

I mean certain aspects to this question; most people would say yes. Not to panic over little things seems nice. Yet in the HPA axis to create this tolerance, overall, just creates a constant higher baseline. That thickens myelination of neurons slowing down communication between cells and lower neuron plasticity. Cushing disease is the result of having too much cortisol produced. According to Mayo Clinic symptoms include:

  • weight gain in the trunk, with thin arms and legs.
  • Weight gain in the face. This is sometimes called moon face.
  • A fatty lump between the shoulders. This may be referred to as a buffalo hump.
  • Pink or purple stretch marks on the stomach, hips, thighs, breasts and underarms.
  • Thin, frail skin that bruises easily.
  • Slow wound healing.

I want to make it clear that a stressful childhood doesn’t cause Cushing syndrome, but its symptoms are similar to those reported in the articles I mentioned above. It would be nice to take a supplement or 2 to try and prevent things like this or to insure we don’t lose cognitive function with age. There is just so much more that play a role in that. It can’t be that easy. Enriching your environment, making safe joyful spaces, surrounding yourself with people that you enjoy, going for walks and trying new things all can help though. Trying to eliminate stress in life is huge.

 

How To Enhance Your Brain

Nootropics

Nootropics are defined as molecules that aim to improve cognitive functions. You may have heard of them being referred to brain supplements or enhancers. There are several natural and synthetic molecules on the market that claim to have brain enhancing effects. But in order to talk about these nootropics we first need to understand what cognition is, and what it means to have enhanced cognition.

What Is Cognitive Function?

Cognitive function is a term used to describe someone’s ability to perform a variety of social and intellectual functions. There are 6 neurocognitive domains that the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) defines (1):

  1. Perceptual and Motor Function: one’s ability to coordinate their bodies movements in response to their environment, and ability to interact with the environment.
  2. Language: the ability to communicate through writing or speaking, our grasp on grammar and appropriate speech patterns.
  3. Learning and Memory: the ability to record and recall information from the past. This involves many subdomains like working memory, and short term and long term memory.

    The neurocognitive domains, artstract by Toni Baynes
  4. Social Cognition: the ability to processes, remember, and use information in social contexts to explain our own behavior; or to predict the behavior of others. Recognizing social cues and understanding facial expressions are good examples.
  5. Attention: ability to focus on multiple things at once, as well as the ability to prioritize what to pay attention to.
  6. Executive Function: higher level functions that allow us to plan and organize tasks, as well as make decisions and respond to our environment.

Many intellectual disabilities are characterized by a reduced ability to perform some or all of these cognitive functions. Research into nootropics to enhance these functions could potentially be used as as a way to combat intellectual disabilities.

Natural Nootropics

L-Theanine

 

Structure of L-Theanine

L-theanine is an amino acid that is found in green tea but can also be bought in capsule or pill form as a supplement. L-theanine when taken on its own has been shown to improve self-reported relaxation, and induce a state of calmness with a dosage of 200mg (2).

Caffeine

Caffeine in the form of coffee

Caffeine has long been known to decrease drowsiness, due to its ability to bind to adenosine receptors in the body. However it’s also been shown that caffeine can improve performance during long lasting cognitive tasks at doses of 40mg (2).

 

 

When taken together L-theanine and caffeine improved performance in attention-switching tasks and in alertness (3). However these are ‘moment of’ improvements, as I like to call them. They will improve function when taking them, but there aren’t any long term effects these compounds have in the body that will improve cognitive function in the long run or permanently.

Synthetic Nootropics

Ampakines

 

4 common ampakine structures

Ampakines are a group of drugs that increase excitatory synaptic responses in the brain. Because of this effect they facilitate long-term potentiation (learning), and induce the production of a family of molecules called neurotrophic factors, which help improve various brain functions and growth (4).

 

Modafinil

Chemical structure of modafinil

Modafinil is a prescription drug that is often used to treat narcolepsy. Tt has stimulating effects similar to amphetamines, though it has a lower risk of addiction. Modafinil has been shown to improve reaction time, logical reasoning, and short term-memory when compared to a placebo (5). The exact mechanisms of how modafinil enhances these cognitive functions is unknown, however.

 

References
  1. https://altoida.com/blog/defining-the-6-key-domains-of-cognitive-function/#:~:text=Defining%20the%20Six%20Key%20Domains%20of%20Cognitive%20Function,of%20Neurocognitive%20Function%20to%20Improve%20Disease%20Diagnostics%20
  2. Effects of Green Tea Phytochemicals on Mood and Cognition, https://pubmed.ncbi.nlm.nih.gov/28056735/
  3. https://www.healthline.com/nutrition/nootropics#12.-Modafinil-(Provigil)
  4. Ampakines and the Threefold Path to Cognitive Enhancement, https://pubmed.ncbi.nlm.nih.gov/16890999/
  5. Modafinil, D-Amphetamine, and Placebo During 48 Hours of Sustained Mental Work, https://pubmed.ncbi.nlm.nih.gov/16890999/

Nootropics: The New, Trending Drug That Makes You Smarter?

Artstract by Kailee Vigen

Imagine a world where there is a magic pill you could buy at Target or Walmart that helps you focus, boosts your memory, and increases your intelligence.

Well, there is no need to imagine this world, because you are living in it! These “magic pills” are called nootropics. But, just how much do these pills or supplements actually work? 

Nootropics and Intellectual Disability

Current research suggests that a combination of environmental enrichment and nootropics could be a course of treatment for various intellectual disorders (ID’s) by improving memory and learning. Someone living with ID means they have decreased ability to learn, live independently, and problem solve. Common ID’s include:

  • ADHD
  • Autism
  • Down Syndrome
  • Fragile X Syndrome 
  • Tourette’s Syndrome
  • Muscular Dystrophy
  • Cerebral Palsy
  • Vision and hearing impairments

What is environmental enrichment?

Greater environmental enrichment correlates with greater quality of life. It involves stimulating the brain through social and physical surroundings. Basically, enrichment involves things that add value to our lives and make us happy, and this can come in numerous forms: reading, traveling, exercising, buying a new car, doing an activity you enjoy, etc. These things paired with a nootropic can increase cognitive function for those with ID. 

One nootropic of interest are ampakines which are a positive allosteric modulator of the AMPA receptor, an inhibitory receptor. Ampakines bind to this receptor and modulate it in such a way that slows the receptor deactivation and desensitization, prolonging its openness and increasing the amplitude of excitation. Ampakines facilitate learning and memory formation, and prevent neurodegeneration. 

Another nootropic is Ras-ERK inhibitor. In ID, the Ras-ERK pathway is overactive causing excessive dendrite formation. These inhibitors improve attention span and working memory deficits. 

Over-the-Counter Nootropics… the moment of truth

So, can you become more intelligent from the “brain enhancing” pills and supplements you can buy at the store? The answer is … no.

According to Barry Gordon, MD, it is still unsure whether nootropics work and are safe to take regularly. Cognitive pathways are so complicated and much is still unknown, so it does not make much sense for nootropics to suddenly improve these unknown pathways of cognition. If nootropics do work for people, that is due to the placebo effect. Health experts suggest only take prescription nootropics if you have a condition that deems their use as necessary. Nootropics generally do not work and are not needed for healthy individuals. 

However, if you wish to increase focus and learning, there are things that act as a natural nootropic! Sleeping, healthy eating, exercise, managing stress, and even consuming berries and dark chocolate can play a large role in improving overall cognitive function. One nootropic majority of people consume is caffeine! Caffeine is a stimulant that can increase thinking skills, and it increases acetylcholine release which is used for short-term memory formation and learning. As if you needed another reason to crack open a can of Diet Coke or drink even more coffee today! 

References

Brody, B. (2022). “What Are Nootropics?” WebMD. https://www.webmd.com/vitamins-and-supplements/features/nootropics-smart-drugs-overview.

More, L.; Lauterborn, J. C.; Papaleo, F.; Brambilla R. (2020). Enhancing cognition through pharmacological and environmental interventions: examples from preclinical models of neurodevelopmental disorders. Neuroscience and Biobehavioral Reviews, Vol. 110, 28-45. https://doi.org/10.1016/j.neubiorev.2019.02.003.

Singleton, W. (2010). “Human Enrichment: Can I Get Just a Little?” The Enrichment Record. http://enrichmentrecord.com/human-enrichment-can-i-get-just-a-little/#:~:text=The%20birth%20of%20a%20baby,and%20make%20us%20feel%20good.

“What Is an Intellectual or Developmental Disability?” The Arc of Larimer County. https://thearcoflarimercounty.org/about-us/what-is-an-intellectual-or-developmental-disability/.

How Nootropics are Studied

What are Nootropics?

Nootropics are chemicals that are meant to help support the functioning of the brain. These can be either synthetic drugs commonly referred to as “smart drugs” or they can be found in certain foods. These chemicals help activate cognitive functioning and support things such as learning and memory. They also have neuroprotective effects, which means that they help to keep the neurons from dying of either damage or apoptosis. Apoptosis refers to programed cell death that happens when a neuron stops working correctly. These drugs can also help to protect neuronal protein and nucleic acid synthesis, both of which are important for a neuron’s survival (Malik & Tlustos, 2017).

These drugs can be used to enhance the cognitive functioning of healthy individuals and possibly could delay the onset of neurodegenerative disorders. Though more research is still needed to confirm their usefulness in delaying the onset of neurodegenerative diseases. But these drugs could also possibly be used to treat memory and learning disorders. Though the gains that can be achieved via the use of these drugs seems to be dependent on the severity of the disorder (More, Lauterborn,  Papaleo, & Brambilla, 2020).

 

How are Nootropics Studied?

Nootropics are an important thing to be studied as they have the possibility to help a lot of people. But they can’t be studied on human participants until their safety and efficacy as been established in animal models. Animal models are animal subjects that share certain characteristics with humans that allow them to act as stand ins for humans. For instance mice and rats have several neuronal similarities with humans that make them a good model for neuroscience research. But when studying nootropics it is important to establish how measure their cognition in comparisons for humans.

There are six neurocognitive domains that are used to examine cognition in humans: 1) perceptual and motor function, 2) language, 3) learning and memory, 4) social cognition, 5) attention, and 6) executive function. There are certain tests used in rodent models to determine their ability in each of these domains. Here I will go over three of these tests (More, Lauterborn,  Papaleo, & Brambilla, 2020).

The first test is called the Digging Task and this is used to measure their discrimination skills requires adequate perceptual and motor function. For this task the rodents are conditioned to associate a certain sent with a treat. They are then put in a box with two separate cups of sand, with each cup being a different sent. The subject must decide which cup to dig in to get the treat. It was found that subjects with bilateral frontal cortex damage had more difficulty with this task than the control subjects (Dig Task, 2023).

(Dig Task, 2023)

The next task is called the Continuous Performance Test which is used to measure attention. This test was originally designed for humans and then was modified for rodents for preclinical trials. For this task rodents are put in a box with a screen and are shown five black and white stimuli. Before the trials begin the subjects are conditioned to associate one of the pictures with a reward. They have to watch the pictures as they cycle through until they see the one associated with a reward. They then need to interact with that stimulus in order to get their reward. Subjects who struggle with reacting to the appropriate stimulus have deficits in attention (Rodent continuous…).

(Rodent continuous…)

Finally there is the Three Chamber Social Approach Task, which is used to determine if the rodent has any deficits in social functioning. This task involves putting the subject in a three chamber box where it can move freely between all the chambers. In the two side chambers there are wire cages. First there is a stranger rodent put in one of the wire cages. If the subject in socially functional it will spend most of its time interacting with this first stranger rodent. Then a second stranger rodent is put in the cage on the other side. Again if the subject is socially functional it will want to investigate this new rodent and spend most of its time interacting with the new rodent (Maze Engineers, 2018).

(Neural Circuits and behavior core) 

 

References

Dig task. Maze Engineers. (2023, February 10). Retrieved May 2, 2023, from https://conductscience.com/maze/portfolio/dig-task/

Malik, M., & Tlustos , P. (2017). Home – PMC – NCBI. National Center for Biotechnology Information. Retrieved May 2, 2023, from https://www.ncbi.nlm.nih.gov/pmc/

Maze Engineers. (2018). The Sociability Chamber: A Test of Social Approach. Retrieved May 2, 2023, from https://www.google.com/search?q=the%2Bthree%2Bchamber%2Btask&rlz=1C5CHFA_enUS926US931&sxsrf=APwXEdeWCW9JDhzNhRtr60NdnGcoM1VX7w%3A1682473366665&source=lnms&tbm=vid&sa=X&ved=2ahUKEwiAqvTatcb-AhUtjYkEHTtUCqgQ_AUoAnoECAEQBA&biw=1438&bih=690&dpr=2#fpstate=ive&vld=cid:d298c613,vid:HJjanD_Mk9c.

More, L., Lauterborn, J. C., Papaleo, F., & Brambilla, R. (2020). Enhancing cognition through pharmacological and environmental interventions: Examples from preclinical models of neurodevelopmental disorders. Neuroscience and Biobehavioral Reviews 110. 28-45. https://doi.org/10.1016/j.neubiorev.2019.02.003.

Neural Circuits and behavior core. Social Behavior | Neural Circuits and Behavior Core. (n.d.). Retrieved May 2, 2023, from https://ncbc.medicine.uiowa.edu/equipment-fees/equipment/behavior/social-behavior

Rodent continuous performance task: Image (rCPT) for mice. Neuroscience by Lafayette Instrument Company. (n.d.). Retrieved May 2, 2023, from https://lafayetteneuroscience.com/products/image-cpt-mice/

 

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