Author Archives: Alexis Llewellyn

Tooth Replacement Patterns in Leopard Geckos

Source: Dr. Theresa Grieco, UBC

As the most important component of eating, teeth are organs that are vital to a wide variety of species, including mammals, reptiles, and insects. Odontogenesis, which is the process of tooth replacement, is something that occurs in humans only once in a lifetime, yet this process varies between organisms. Reptiles, specifically geckos, shed and replace their teeth once a month, which is something that is not commonly known by the general public. It is this characteristic of a gecko that make them the ideal research animal for studying tooth replacement.  The leopard gecko, and its unique features, are discussed in the podcast below, with the help of researcher Dr. Theresa Grieco.

University of British Columbia’s Dr. Theresa Grieco conducted a research study  on odontogensis in leopard geckos, a relatively uncommon study animal. From the study, the main finding was that odontogensis is a process that is predetermined in the embryo, and continues naturally in an adult. The video below describes Dr. Grieco’s study, and its applications to the research community.

Dr. Grieco’s study has contributed a significant amount of information to the field of odontogenesis. The results of this study, which have laid down a foundation for future research, will eventually have valuable interpretations in humans.

In terms of future research, Dr. Grieco plans to perform surgeries that have yet to be  done by researchers, as there are many unanswered questions surrounding tooth replacement. As stated by Dr. Grieco, what the tooth replacement “cycle is actually made up of is still what we are trying to figure out.” From this, researchers can determine the importance that each step holds in the cycle of odontogenesis in geckos.

Source: Dr. Theresa Grieco, UBC

However, more importantly, this research has the potential to enhance understanding of human tooth, and organ regeneration. As mentioned in the study, “there is going to be a bridge at some point” between the findings on geckos, and human teeth. Specifically, Dr. Grieco states that her study serves as a basis to determine whether morphological clues and common tooth patterns (similar to those found in geckos) will be found in humans, and if these can be used to discover a way for humans to re-grow their teeth too.

This aspect of science research is minor, but has many implications and benefits, and as Dr. Grieco states, “I don’t think I’m learning everything about life, but I’m definitely helping.”

A Glass a Day Keeps the Doctor Away!

At the end of a draining week, there is nothing more satisfying than having a long awaited glass of red wine. This may seem like a guilty pleasure, but what if your favourite weekend beverage actually has proven health benefits?

Source: Flickr

History has shown that red wine has been in production for over 6,000 years, and has been used primarily for religious purposes since its origin. However, red wine has been proven to be advantageous for one’s health.

The term wine describes an extensive class of alcoholic beverages, which are the result of grape fermentation. Although wine is a fruit product produced from grapes, the process of fermentation allows it to transform from regular grape juice, into the beverage that we all know as wine!

Ethanol is the alcoholic component in wine, and it has been proven that moderate ethanol consumption can lead to a longer lifespan. A study in Eastern France was conducted, and moderate red wine intake, which was defined as 2-5 glasses per day, was shown to have a 24%-31% reduction in mortality. Now, how exactly does red wine make you live longer?

What makes red wine so unique is the presence of secondary metabolites in grapes, which are called polyphenols. Secondary metabolites are organic molecules that are not directly involved in plant development. Rather, they indirectly aid in defense mechanisms, and keep plants safe.

The skin and seeds of grapes are the source of these polyphenols, and are essential components in the red wine making process. During fermentation of red wine, the skin and seeds are left on, thus allowing humans directly consume the polyphenols. In contrast, before being fermented, white wines are pressed off of the seeds and skins, which also explains why red wine has greater benefits when compared to white wine.

Polyphenols have vital antioxidant properties, which help to lower the overall risk of chronic diseases. They protect our body’s cells from damage, thus helping to lower the possibility of heart conditions, diabetes, and even cancer. Specifically, there is strong evidence that mortality caused by certain types of heart disease is decreased when red wine is consumed. For example, red wine can prevent build-up of fats and other substances in the arteries, ultimately reducing the risk of heart disease.

Source: Flickr

Now it is important to remember that this is all in moderation, and doctors recommend 5 ounces, or 1-2 glasses of red wine a day. With that being said, excess consumption of red wine, and similarly other alcoholic beverages, will not have the same effects, and can even lead to higher mortality. So remember, red wine may in fact have health benefits, but it is only a glass a day that will ultimately keep the doctor away.

Bottoms up!

By Alexis Llewellyn

 

A Glass a Day Keeps the Doctor Away!

At the end of a draining week, there is nothing more satisfying than having that long awaited glass of red wine. This may seem like a guilty pleasure, but what if your favourite weekend beverage actually has proven health benefits?

Source: Flickr

History has shown that red wine has been in production for over 6000 years, and has been used primarily for religious purposes since its origin. However, red wine has been proven to have significant health benefits.

The term wine describes an extensive class of alcoholic beverages, which are the result of grape fermentation. Wine is a fruit product produced from grapes, however the process of fermentation allows it to transform from regular grape juice into the beverage that we all know know as wine!

Ethanol is the alcoholic component in wine, and it has been proven that moderate ethanol consumption can lead to a longer lifespan. A study in eastern France was conducted, and moderate red wine consumption, which was defined as 2-5 glasses per day, was shown to have a 24%-31% reduction in mortality. Now, how exactly does red wine make you live longer?

What makes red wine so special is the content of secondary metabolites in grapes, which are called polyphenols. Secondary metabolites are organic molecules that are not directly involved in plant development. Rather, they indirectly aid in defense mechanisms, and keep plants safe. The skin and stems of grapes (the source of polyphenols) are essential components in the red wine making process. This also explains why red wine has greater benefits when compared to white wine.

These polyphenols have very prominent antioxidant properties, which help to lower the overall risk of chronic diseases. They protect our body’s cells from damage, thus helping to lower the possibility of heart conditions, diabetes, and even cancer. Specifically, there is strong evidence that atherosclerotic cardiovascular disease mortality is decreased through consumption of red wine. This means that red wine prevents build-up of fats and other substances in the arteries, ultimately reducing the risk of heart disease.

Source: Flickr

Now it is important to remember that this is all in moderation, and doctors recommend 5 ounces, or 1-2 glasses of red wine a day. Consequently, excess consumption of red wine, and similarly other alcoholic beverages, will not have the same effects, and can even lead to higher mortality. So remember, red wine may in fact have health benefits, but it is only a glass a day that will ultimately keep the doctor away.

Bottoms up!

By Alexis Llewellyn