Green with envy

Flick the lighter. Burn. Inhale. Ahh…that’s the good stuff.

It appears that this routine is becoming more and more common in the daily lives of many Americans. Medical marijuana is on the rise, and multiple states have now legalized it. A lot of people criticize this new trend, while many others are green with envy of the availability of medical marijuana. Why such a discrepancy in opinion? When most people think of weed, the only thing that comes to mind is burnt out hippies and junkies. Weed has a bad rap, and carries a stigma with it. But why?

        This week’s article, Endogenous cannabinoids revisited: A biochemistry perspective, introduced us to a pretty fascinating system within the body. The endocannabinoid signaling system is a family of receptors in the brain that bind the endogenous cannabinoids, 2-AG and AEA, that our body makes naturally. These endocannabinoids (eCBs) play a role in pain relief, appetite stimulation, and motor control. It also just so happens that these eCBs are extremely similar to THC, the active ingredient in marijuana (incredulous gasp!). This means that there are actually specialized receptors in our brains that are made to bind things like THC. This brings me back to the above question: Why does medical marijuana get such a bad rap? Ignorance, mainly.

        It has been supported by scientific studies, like the paper we read this week, that THC as a cannibanoid binds the eCB receptors in the brain and has beneficial therapeutic effects. So why not make medical marijuana legal everywhere? One of the biggest arguments against the use of medical marijuana is it’s addictive qualities. Now yes, marijuana might be addictive, but what isn’t? It isn’t any more addictive that the pain meds that people take everyday. It seems silly to me that people would rather keep using chemically synthesized pills that have who knows what side effects, over this natural alternative. One of the coolest things about medical marijuana (besides the pain relief, and other awesome benefits) is that there are essentially no negative side effects (with proper use of course).

        I think that steps need to be taken towards universal legalization of medical marijuana. The biggest thing that needs to be done is raising awareness of the benefits. People opposed most likely don’t know that medical marijuana actually does have positive effects on the user. Maybe if everyone knew that THC is basically the same as the endocannabinoids already found in the body they would be less opposed to using it as a therapeutic drug. This would be a huge step in medicine, and would help countless individuals suffering from chronic pain, eating disorders and many other diseases.

Dopa what?

Typical conversation before reading the proceeding blog post:

Average Joe: “What’s dopamine?”

Neurochem student: “Well, it’s one of the most common neurotransmitters in the human brain.”

Joe: “Isn’t that some drug that athletes use?”

N.S. : “Not exactly, that’s just called “doping,” and isn’t actually related to dopamine.”

Joe: “Dopamine..like, cocaine, right?”

N.S. : “No, no, Dopamine itself isn’t an illegal drug. It does, however, play a role in drug addiction.”

Joe: “So basically Breaking Bad then..yeah?”

N.S. : …….Oy vey

So what exactly is dopamine, you ask? This is a relatively new area of study for me, but I’ll do my best to get across the important stuff…without putting you to sleep. Let’s start with the basics: first and foremost, dopamine is a neurotransmitter. That is, a chemical compound in the brain that sends a signal from one neuron to another. Neurotransmitters are key players in neural pathways and are essential for executing all of our basic actions and functions. This week in class we looked at a more specific facet of dopamine: the Akt/GSK-3 pathway. I know what you’re thinking, probably something along the lines of “Ak-wha? I’m over this blog.” Don’t let it scare you! The Akt/GSK pathway is actually really nifty and is prevalent in many common neurological disorders. The bare bones explanation of the pathway is as follows:

1. Dopamine binds to the D2 receptor

2. Binding causes the -arrestin complex to form

3. arr deactivates Akt

4. Deactivated Akt allows GSK to remain active

5. GSK gets to do all sorts of fun things in the cell!

Now you’re probably thinking “Why should I care about any of this?” The simple answer is that, whether you realize it or not, your life is filled with topics revolving around this pathway. This is the mechanism of many antipsychotics, is directly related with the treatment of bipolar disorder, and plays a huge role in addiction and substance abuse. Pretty neat, right? While learning about the nitty gritty details of the dopamine pathway or the Akt/GSK cascade may not be as entertaining as watching the latest episode of Breaking Bad, it is far more relevant to our everyday lives. Don’t worry if you don’t understand everything about it–I don’t either!

Living with ALS

 

I was not very familiar with ALS before this week. I had an idea of what it was, but I was not aware of how a person got it, or what was done after they were diagnosed. That being said, I feel that I have learned a lot this past week. I was informed that it is hard to determine when someone has ALS, and when a person in diagnosed, there is very little that can be done to help. There are a few medicines that help prolong the disease, and I also found that by having a larger fat reserve, people with ALS live longer. However, people who are diagnosed with this awful disease will live a very difficult life that will end too quickly.

Not only does this disease take over the individual’s life, but it also requires help from others. Many patients depend on their families or care givers to help them with simple tasks, and hopefully they have a strong support system to help the patient feel as comfortable as possible while facing this devastating illness. I believe that an individual’s attitude towards life, whether he/she is sick or healthy, depends on the people that surround them; this is true for ALS patients as well. The main thing that can really be done for ALS patients is to make their life as comfortable as possible. It would be the hardest thing in the world to watch someone I love lose a battle with a disease after fighting so hard, but I would do everything in my power to help.
There are still a lot of questions I have about this disease like: how can we improve the lives of these patient and make their time on this earth better? There is so much unknown about the brain and why things happen the ways they do, and how can we fix one problem without creating another one? Scientists in this field have a lot of work ahead of them, but I feel we are headed in some sort of direction; whether or not it is the right one will be discovered soon enough, but for now I am thankful that there is research being done to understand the basics of many diseases that have ruined the lives of many.

A Glass of Milk A Day Keeps ALS Away?

Amyotrophic lateral sclerosis, better known as ALS or Lou Gehrig’s Disease, is a rapidly progressing neurodegenerative disorder. The symptoms of the disease usually start between 40-60 years of age. Initial symptoms include mild muscle weakness, cramps, muscle spasms, or muscle stiffness. Although the symptoms are often overlooked at first, symptoms progress until a patient is no longer able to care for himself, eat unassisted, or breathe unassisted. The symptoms of ALS can be attributed to loss of motor neurons; however, like many neurodegenerative disorders, the cause of the degeneration of motor neurons is still unclear.
One possible cause of motor neuron loss is protein misfolding and cellular response to misfolded proteins. The article “Calcium-dependent protein folding in amyotrophic lateral sclerosis,” suggests that changes in the normal calcium levels or signaling causes stress in the cell, which causes the cell to not function properly. The first issue is protein folding. Basically, the cell requires proteins for transport, structure, enzymes to assist reactions in the cell and many other functions. Not only must the building blocks (amino acids) be strung in the right order, but the proteins must also be folded into the correct three-dimensional structure in order for it to function properly. This is where the endoplasmic reticulum (ER) comes into play. When proteins are made, they travel through the ER and are folded along the way. Chaperone proteins, found in the ER, are responsible for folding other proteins into the right shapes. Ca2+ levels in the ER regulate the chaperone proteins’ activity.
When calcium levels in ER deviate from homeostasis, the cell attempts to continue folding proteins correctly. One way to do this is to activate the unfolded protein response (UPR). The UPR tags a protein to tell the ER not to allow the protein to leave until it is properly folded. Without the proper UPR, the cell will experience ER stress for accumulation of proteins, which ultimately results in cell death. Both ER stress and UPR are thought be implicated in ALS pathogenesis. Further research is needed to develop treatments that target the ER and UPR to improve ALS symptoms and survival time. Currently, the average survival time for ALS patients is 3-5 years. By better understanding the progression of this disease, advances could be made in treatment to slow the progression or even cure ALS. Investigating calcium and calcium-dependent folding proteins appears to be a promising direction for ALS research.

The Capstone Experience

There is a heavy emphasis on liberal learning at Concorida College. Even as a chemistry major, I have taken courses in art, history, sociology, & other areas of study that are much different than what I’m used to in chemistry. Overall, I feel this has been a very positive experience for me. One of the hallmarks of Concorida’s liberal arts education is the capstone course that most students take either their junior or senior year.

As a senior, I chose to take a capstone in my major, and that course turned out to be neurochemistry.  Prior to taking neurochemistry, I had little to no neuroscience experience. This was frightening as well as exciting. I was worried I would just be lost in the content due to jumping into an upper level class with no prior experience, but I was also excited at the idea that I could get some insight on a whole new field of chemistry.
To be honest, the learning curve was steep. I had no idea what what going on for the first month or so. But after that, things started to click. I started to make connections just like any other class I’ve taken and since then I’ve grown to enjoy it. The most intriguing part of this class was how we brought the topics we were dealing with in class to a broader, more universally applicable level, instead of just focusing on what happens in a textbook or in a lab. The class essentially looked at a review article focusing on one neurological topic (usually a neurological-related disease/condition), worked as a class to understand the topic, and then discussed the relevant issues pertaining to the topic. We talked a lot about how the topic applied to society and how it will affect future generations. We talked about the politics, beliefs, and habits of our society and how they pertained to the topic. It was unlike any other science class I had taken before, and I really enjoyed it .
The bottom line is that most classes I have taken are lecture based and, for the most part, are pretty contained to themselves. The topics are discussed in a very limited scope and there usually isn’t a drive to take the information we have learned outside of the classroom or lab. With my capstone class, I was almost doing the exact opposite. We figured out how things were working as a class and then looked at how we could bring that information out into the non-scientific community. As a scientist, I know this is what I’m eventually going to have to do from time to time, and this class has been a huge benefit in showing me how to do that. I think it’s important for any subject to be able to communicate it’s issues to other areas of study, and science is no exception. Overall, I feel my capstone experience demonstrated the goals of a liberal education, and I am glad I took the course.

My Capstone Experience

This semester I took my capstone course in chemistry – neurochemistry. This course was unlike any other chemistry course I have enrolled in. It was not the normal class where you sit, take notes, listen to a lecture and then have an exam covering the material. Instead, this course required much more individual involvement and research. Each week a topic was covered and current research was read on the subject. Most of the time, these articles were very overwhelming to read and our understanding after reading the article was very limited for the first day of class each week. The next day in class, each person had a topic that they covered individually and they told the class what they found out about the topic through their individual research. The third day of class each week we had a discussion day, and discussed what we still did not understand about the topic covered or what we thought was particularly interesting. These discussion days were my favorite days – we simply talked about what we had learned in the last week of classes and connected it to other knowledge we already knew. Having very little neurochemistry background when I enrolled in the course, I can say that I have learned a lot about neurotransmitter signaling and how this signaling can relate to diseases. The amount of knowledge I have gained within the last couple of months has far surpassed my expectations. I have learned so much about various diseases and how they can relate to so many different things in the body. I do believe that my speaking skills have greatly improved this semester also. Every week we had to present to the class a topic that we researched on our own. At the beginning of the semester, these were the days that I dreaded. I used to dread the days when I had to stand in front of my peers and speak. I would get so nervous and shaky, I would rush through my presentation and forget to say half of the things I had learned about my topic. By the end of the semester, I was much more comfortable standing up in front of others and sharing what knowledge I had acquired through my individual research. Overall, this capstone experience has been a great one. I have enjoyed this class very much and have improved my speaking skills, my ability to research, and my ability to summarize things and make them easy to understand for others.

ALS – A Sad Disease

Our final topic of the year is ALS – a disease that when diagnosed with, will be fatal within 3-5 years. There are very few medications for the treatment of this disease, only one has been approved by the FDA in 1995. The cause of this disease is not yet found, but the latest research seems to believe that ALS is linked to abnormal calcium levels in the cell. These abnormal calcium levels in cells are believed to cause misfolding of proteins and stress on the endoplasmic reticulum (ER) of cells. Because the ER is a site for protein packaging and folding, when the ER is under stress, the mechanisms that are normally used to repair these misfolded proteins begin to malfunction. These malfunctions lead to accumulations of misfolded proteins in the cell and eventual diseases, such as ALS. This disease is a very sad disease. Symptoms of ALS are first muscle spasms, and eventually when so many motor neurons are lost, paralysis. People that develop ALS can take medications to help them feel better, or the one drug that is approved for the treatment of ALS. However, the one drug approved for treatment causes heavy liver damage, and cannot be taken for extended periods of time. This drug does not stop the disease from happening, but it does slow the progression. Once a person is diagnosed with ALS, it seems that they are faced with eventual death. ALS is a fatal disease that moves quickly, killing a person in approximately 3-5 years. Research needs to be done to further understand the mechanisms in which this disease affects the body so that further treatments can be developed as well as an eventual cure.

Alzheimer's Disease: the good, the bad, and The Big Mac

Alzheimer’s disease (AD) is a neurodegenerative disease that has been increasingly making its way to the forefront of devastating diseases in our society. It’s likely that many of us know someone who is affected by AD, yet the exact mechanisms are not well understood and there is no current effective cure. Alzheimer’s disease exhibits severe dementia as a result of the degradation of neurons and synapses in the brain. AD is a disease that not only harshly affects those who have the disease, but also those who are left to care for and look after those who have it.

The causes of AD are not entirely known. There are countless pathways that are thought to contribute to the eventual build up of amyloid plaques and neurofibrillary tangles. The amyloid plaques build ups of the beta amyloid protein and the tangles result from the build up of a wrongly phosphorylated tau protein. Pictured above is a comparison of a healthy human brain and a brain of an individual with severe AD. It is easy to see the damage done to neurons as a result of AD, and one can probably imagine the consequences of such neuronal damage.
So what do we do about this? Shouldn’t science was supposed to have an answer to these problems. Do we all just wait around our whole lives and hope that we don’t get Alzheimer’s and essentially lose our minds? It turns out that there are certain things we can do to help prevent it. In particular, our diets might be a good place to start.
To say that eating your vegetables will protect you from getting AD later in life would be a bit of a stretch. However, there are some significant ties between those who have unhealthy diets and those who develop Alzheimer’s.  A primary result of consistently eating unhealthy food is obesity, which has been on the upshot as of late. In turn, many obese people develop insulin resistance and type-2 diabetes. This has a whole set of consequences in itself, but there have been distinct connections made between those who are insulin resistant and those who develop AD.
Could our diets really have an effect on our health to the extent of Alzheimer’s disease? I feel like we could all admit that we could eat a little better. Sometimes it’s just easier to grab McDonalds on the way home or eat a bag of chips in the car. Our society has a very “go-go-go” attitude about everything, including food. It’s also difficult to see the long term affects that eating a bag of Doritos every other day has on us until it’s basically too late. Personally, I would love to eat healthier food. However, I’m broke college student. When I go to the store it’s much easier to buy a frozen pizza than some organic sugar peas. I think it’s primarily a problem of our society, and our diets seem to play a much larger role in our overall health than we probably realize.

Fat Chance for Reversal: Is obesity a brain disease?

Obesity is without a doubt a prominent and growing concern in our society. To put it bluntly, our society kind of looks like it’s getting fatter and fatter by the day. Childhood obesity is at an all time high and the speculations as to why vary greatly. Is it our diet? Maybe our sedentary lifestyles? Too much time playing video games and not enough time out playing outside like they did in good old days? Regardless, obesity is a troublesome and unhealthy phenomenon.
We recently read a review article on obesity entitled “Is obesity a brain disease?” The title is interesting in itself. Typically, we think of an obese person as simply having a larger than normal body mass. Of being overweight. We maybe associate obesity with the development of type-II diabetes, but for the most part we associate obesity with external physical features and physiological functions. Or at least that’s how I perceived obesity before reading this paper. However, obesity can also cause severe neurological damage as well.
As it turns out, “overnutrition” (just a fancy word for eating too much) can lead to a variety of unfavorable outcomes in the brain. Overnutrition has  been linked to structural and functional changes in the brain. I was extremely taken aback by the fact that your brain will actually start to shrink in size as you continue to acquire more and more body fat. That’s just really a downer. An individual with obesity will also develop abnormalities in metabolic control and balance, which can essentially worsen the conditions if it causes an individual to consume more. Obesity has also been linked to cognitive decline, disruptions in sleep patterns, and inflammation in the brain.
Upon learning this information, I was really surprised. It’s made me more conscious of what I’m eating and how my eating habits now will affect my health down the road. But obesity as a brain disease? Seriously? For me, that brings it to a whole new level. I would hope that this information would encourage people to recognize how beneficial it is to have a healthy diet and exercise. Obesity is something that we should all strive to avoid, and I believe it is something that can be prevented with proper awareness and care.
 
 
 

Endocannabinoid Signalling and Marijuana

Endocannabinoid signaling is the signaling that mediates the affects of cannabis (marijuana). The ethical question here is whether or not marijuana should be legalized as a medical treatment or not. Endocannabinoid signaling occurs throughout the body, and mediates many different types of functions in the body. When this signaling is active, it is known to increase appetite, improve memory, and induce sleep. So why not have marijuana legalized as a medical treatment? Marijuana stimulates the endocannabinoid system and can have all of these positive effects on the body. For example, someone who has had cancer and has lost a significant amount of weight. They are now cancer free and trying to recover. If the stimulation of endocannabinoid signaling can increase their appetite and help them gain weight, wouldn’t it be a good treatment? Medical marijuana can be used to treat all sorts of different diseases/ailments, but it should be legalized for the specific situations it would be helpful in. I know there is a lot of ethical questions surrounding the legalization of marijuana as a medical treatment, but wouldn’t it be helpful to have it legalized as a medical treatment for special cases?

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