Here’s some fun news: After you die, you’re not completely dead. In a new study, scientists from the University of Illinois–Chicago reveal that some genes express more actively in the human brain after death.

How do these“zombie genes” still hang around, exactly? The answer is a combination of common sense and surprise.

To study the postmortem brain, researchers collected brain tissue samples from brain surgery patients. In Scientific Reports, they write:

“Compared to a number of neuropsychiatric disease-associated postmortem transcriptomes, the fresh human brain transcriptome had an entirely unique transcriptional pattern. To understand this difference, we measured genome-wide transcription as a function of time after fresh tissue removal to mimic the postmortem interval.”

The scientists say they were motivated by trying to close the gap between research studies of brain issues and the living human brains we want to eventually treat.“Research in animal models that aim to understand fundamental disease processes and develop new treatments for human disorders often fail to translate back to humans in clinical trials,” they explain.

But available human brain tissue isn’t any better:

“For a majority of neuropsychiatric disorders including Alzheimer’s disease, Autism, and Schizophrenia, only postmortem tissues are available. Given the importance of these studies we examined the fidelity of overall gene expression between fresh and postmortem human brain tissues for a number of brain disorders with a central focus on activity-dependent genes that are likely involved in higher cognitive human brain function.”

Basically, if our only options are these fairly subpar analogs to the living human brain, we’d better understand as well as possible how different the postmortem brain really is. And to do that, the scientists compared the freshest possible brain tissue to traditional postmortem brain tissue.

They found a totally different landscape of expressed genes, with neuronal ones falling in activity while glial genes rose to compensate:

“We found that 1427 genes could be clustered. One cluster of 317 rapidly declining genes was predicted to be neuronal and strongly overlapped with the activity-dependent genes. A second cluster of 474 genes was predicted to be glial, including astrocytes and microglia. Remarkably, as the neuronal cell cluster rapidly fell, there was a reciprocal and dramatic increase in the expression of the glial cell cluster.”

What explains this“zombie gene” activity? In a statement, corresponding author Jeffrey Loeb explains the sensible answer:“That glial cells enlarge after death isn’t too surprising given that they are inflammatory and their job is to clean things up after brain injuries like oxygen deprivation or stroke,” he explains.

In a way, the glial genes represent a cleanup crew that’s only activated after a messy incident—like brain surgery.

While 80 percent of genes stayed stable over time, the neuronal and glial genes represent the other 20 percent. The glial“zombie” genes peaked their increased activity after about 12 hours on average.

Understanding the brain’s chemical signatures is key for scientists who are trying to find ways to cure devastating brain diseases like Huntington’s. This research was boosted by a great resource the study team has: the University of Illinois neurorepository, a collection of samples of brain tissue samples that Loeb chairs. The samples in this study were from patients with epilepsy and other brain diseases.

By Freedom

The editors and writers of Patriots4Freedom are dedicated to searching out threats to American Freedom. Don't stand by while the nanny state takes away your choices, or Big Tech stifles your free speech. Take a stand and fight for your liberty!

70 thoughts on “After You Die, Zombie Genes in Your Brain Come to Life”
  1. This only applies to the brain dead Zombie democrats that we see walking around trying to convince others that the Socialist/Communist way So is the better way of life. Listen you brain dead Democrats for I have something to say about you and your dirty rotten low down way of trying to destroy our great Nation. So, just setup, shut up and pay attention. I’ve been here on God’s green earth for almost eighty-four yeas, served in the military account being called back in by President Kennedy because of the Berlin crises because of my Morris Code abilities to assist in the training of or Army Rangers. To make a long story short, I’ve served under many presidents and Donald Trump is up there in the top three or four I’ve had the please to observe or serve under. I will even go out on that limp and predict he will replace Biden when the truth comes out about the stolen election, and it will. GOD BLESS.

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