Hi! Back with trying to understand the last, three pages of the article “Progression In Geographic Atrophy in Age-related Macular Degeneration”.
It would appear they are having trouble figuring out exactly how these suspect genes are causing the problems they seem to be causing. Like watching a magic show: you know the magician has something to do with what is happening but you cannot seem to figure out how he is doing it!
They have come up with theories, of course. Some people think ARM2 encodes for a mitochondrial protein. Remember the mitochondria are the powerhouses of the cells. Others believe the ARM2 gene has something to do with our old friendly nemesis, the complement immune system.
While in some cases they believe it makes more sense to believe one mechanism is responsible for several lesion characteristics, in other cases they believe there are separate mechanisms at work. And to make matters even more complex, they are thinking the whole thing may work on the “Goldilocks principle.” In other words, certain genes may not necessarily be bad or good. Like the chairs and the porridge, they may have times they are “just right” and highly beneficial for the cell. Other times? Not so much.
In short? Damned if I know and, more importantly, damned if the researchers know either. However, they are hot on the trail of…something.
Right now at this stage of the game, they are collecting knowledge. It may be quite a while until they connect the dots with all of this stuff, but connect the dots, they will. Then we shall see what the picture is.
So, what did I get out of this article? A lot of questions. Like good investigators, right now the researchers are gathering data. The AREDS2 study has made available to researchers thousands of people with AMD. These people are being poked, prodded and scanned in the name of trying to understand the nature of the beast. No clue what they may find but the hypotheses being generated are intriguing. Which one do you think may prove to be right?
Written September 20th, 2018