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Apr 18, 2020

When Damaged, the Adult Brain Repairs Itself

Posted by in categories: biotech/medical, neuroscience

“In corticospinal injuries using a mouse model, adult neurons begin a natural regeneration by revertiprocessng back to an embryonic state and that regeneration is sustained by a surprising gene.”

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When adult brain cells are injured, they revert to an embryonic state, according to new findings published in the April 15, 2020 issue of Nature by researchers at University of California San Diego School of Medicine, with colleagues elsewhere. The scientists report that in their newly adopted immature state, the cells become capable of re-growing new connections that, under the right conditions, can help to restore lost function.

Continue reading “When Damaged, the Adult Brain Repairs Itself” »

Apr 17, 2020

Analysis of the mutation dynamics of SARS-CoV-2 reveals the spread history and emergence of RBD mutant with lower ACE2 binding affinity

Posted by in categories: biotech/medical, evolution, genetics

Via Harvard David A. Sinclair “The coronavirus is part bat & part human virus. A new study says the Frankenstein event happened well before its transmission to humans. Wait, what? Humans first infected bats?

The intermediate Frankenstein coronavirus has part human/part bat versions of the spike protein (the knobs on the outside of the virus & what COVID-19 vaccines target). Coronafrankenstein is formally called RaTG13, the name, rank & serial # of a horseshoe bat sample. If we gave bats coronavirus first, then people, including scientists, should stay away from bats especially if they don’t feel well. That’s why, as much as I like cats, I don’t like how they can catch it from us. It’s a potentially vicious cycle.

The new study says a mutation has changed the spike protein of an Indian strain of coronavirus that likely reduces its ability to transmit, but “raises the alarm that the ongoing vaccine development may become futile in future epidemics” like seasonal flu.”


Monitoring the mutation dynamics of SARS-CoV-2 is critical for the development of effective approaches to contain the pathogen. By analyzing 106 SARS-CoV-2 and 39 SARS genome sequences, we provided direct genetic evidence that SARS-CoV-2 has a much lower mutation rate than SARS. Minimum Evolution phylogeny analysis revealed the putative original status of SARS-CoV-2 and the early-stage spread history. The discrepant phylogenies for the spike protein and its receptor binding domain proved a previously reported structural rearrangement prior to the emergence of SARS-CoV-2. Despite that we found the spike glycoprotein of SARS-CoV-2 is particularly more conserved, we identified a mutation that leads to weaker receptor binding capability, which concerns a SARS-CoV-2 sample collected on 27th January 2020 from India. This represents the first report of a significant SARS-CoV-2 mutant, and raises the alarm that the ongoing vaccine development may become futile in future epidemic if more mutations were identified.

Apr 16, 2020

Report: Covid-19 patients recovering quickly after getting experimental drug

Posted by in category: biotech/medical

Covid-19 patients who are getting an experimental drug called remdesivir have been recovering quickly, with most going home in days, STAT News reported Thursday after it obtained a video of a conversation about the trial.

The patients taking part in a clinical trial of the drug have all had severe respiratory symptoms and fever, but were able to leave the hospital after less than a week of treatment, STAT quoted the doctor leading the trial as saying.

“The best news is that most of our patients have already been discharged, which is great. We’ve only had two patients perish,” Dr. Kathleen Mullane, an infectious disease specialist at the University of Chicago who is leading the clinical trial, said in the video.

Apr 15, 2020

‘Cough chamber’ shows six feet not far enough

Posted by in category: biotech/medical

A recent Western-led study says two meters might not be far enough away if someone lets an uncovered cough loose in your direction—meaning sneeze and cough etiquette is more than a simple social nicety, but a key to stopping the spread of diseases like COVID-19.

“It’s pretty hard to avoid a ,” said Mechanical and Materials Engineering professor Eric Savory. “By the time you react, it’s reached you.”

Continue reading “‘Cough chamber’ shows six feet not far enough” »

Apr 14, 2020

Source for non-doctors and doctors

Posted by in category: biotech/medical

https://buff.ly/2V85tZv

Apr 13, 2020

Virology lab finds drug originally meant for Ebola is effective against a key enzyme of coronavirus that causes COVID-19

Posted by in categories: biotech/medical, chemistry

Scientists at the University of Alberta have shown that the drug remdesivir is highly effective in stopping the replication mechanism of the coronavirus that causes COVID-19, according to new research published today in the Journal of Biological Chemistry.

The paper follows closely on research published by the same lab in late February that demonstrated how the drug worked against the Middle East Respiratory Syndrome (MERS) virus, a related coronavirus.

“We were optimistic that we would see the same results against the SARS-CoV-2 virus,” said Matthias Götte, chair of medical microbiology and immunology at U of A.

Apr 13, 2020

Clinical presentation and virological assessment of hospitalized cases of coronavirus disease 2019 in a travel-associated transmission cluster

Posted by in category: biotech/medical

Can you be reinfected with Covid-19?

I’m skeptical as to whether reinfection is possible or not from Covid-19. However studies have shown that the virus lasts longer than 2 weeks within the human body:

10 days: https://doi.org/10.1101/2020.03.05.

More than 2 weeks: https://jamanetwork.com/journals/jama/fullarticle/2762452

Continue reading “Clinical presentation and virological assessment of hospitalized cases of coronavirus disease 2019 in a travel-associated transmission cluster” »

Apr 12, 2020

For First Time in History, AI Learns to Translate Silent Human Brain Activity into Text for Locked-In Syndrome Patients

Posted by in categories: biotech/medical, information science, robotics/AI

Neuroscientists have just created an artificially intelligent algorithm that detects human brain activity and translates it into English sentences—and they said it was the first time such translations could be done on a 1:1 speed with natural human speech; faster-than-light.

Apr 12, 2020

Remdesivir Improves COVID-19 Symptoms in 68% of Patients in Early Study

Posted by in category: biotech/medical

An early analysis of remdesivir, a drug developed by pharmaceutical firm Gilead, has shown that it may have improved severe symptoms of COVID-19 in 68% of patients after 18 days.

For the Gilead-funded study, doctors recruited 61 patients hospitalized with COVID-19 with oxygen saturation of 94% or less while breathing ambient air or receiving oxygen support. To receve remdesivir on a compassionate use basis (a program allowing the use of unapproved medicines when no other treatment options are available), on the first day of treatment, patients were administered 200mg of remesdevir, and then 100 mg daily on the remaining 9 days of treatment.

Continue reading “Remdesivir Improves COVID-19 Symptoms in 68% of Patients in Early Study” »

Apr 12, 2020

Neurologic Manifestations of Hospitalized Patients With Coronavirus Disease 2019 in Wuhan, China

Posted by in categories: biotech/medical, neuroscience

Findings In a case series of 214 patients with coronavirus disease 2019, neurologic symptoms were seen in 36.4% of patients and were more common in patients with severe infection (45.5%) according to their respiratory status, which included acute cerebrovascular events, impaired consciousness, and muscle injury.


Published Online: April 10, 2020. doi: 10.1001/jamaneurol.2020.1127

Author Contributions: Dr B. Hu had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Drs Mao, Jin, M. Wang, Y. Hu, Chen, He, and Chang contributed equally and share first authorship.

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