Lifeboat Foundation

The novel coronavirus SARS-CoV2 has been observed to cause a higher incidence and greater severity of disease in males, as seen in multiple cohorts across the globe. The reasons for gender disparity in disease severity is unclear and can be due to host factors. To determine whether males have delayed viral clearance after infection, we evaluated the time to clearance in symptomatic patients tested by serial oropharyngeal/nasopharyngeal swabs followed by RT-PCR at a reference lab in Mumbai, India. A total of 68 subjects with median age of 37 years (3−75 range) were examined and included 48 (71%) males and 20 (29%) females. We observed that females were able to achieve viral clearance significantly earlier than males, with a median difference of 2 days in achieving a negative PCR result (P value = 0.038). Furthermore, examination of 3 families with both male and female patients followed serially, demonstrated that female members of the same household cleared the SARS-CoV2 infection earlier in each family. To determine reasons for delayed clearance in males, we examined the expression patterns of the SARS-CoV2 receptor, Angiotensin-converting enzyme 2 (ACE2), in tissue specific repositories. We observed that the testes was one of the highest sites of ACE2 expression in 3 independent RNA expression databases (Human Protein Atlas, FAMTOM5 and GETx). ACE2 was also determined to be highly expressed in testicular cells at the protein levels. Interestingly, very little expression of ACE2 was seen in ovarian tissue. Taken together, these observations demonstrate for the first time that male subjects have delayed viral clearance of SARS-CoV2. High expression of ACE2 in testes raises the possibility that testicular viral reservoirs may play a role in viral persistence in males and should be further investigated.

The authors have declared no competing interest.

Patent describes system that rewards users with digital currency every time they view an advertisement or use a certain internet service.

Provention Bio is on track to complete submission of a BLA for its T1D drug Teplizumab by the end of 2020.

This will revolutionise treatment of at-risk T1D patients. The company received the Breakthrough Therapy Designation from FDA.

The company is significantly undervalued on this indication alone — but has enormous potential in other indications.

Scientists typically use a method known as polymerase chain reaction (PCR), but it requires bulky and expensive equipment and considerable expertise to perform correctly. That means DNA samples collected in the field normally have to be sent to dedicated laboratories for testing, which makes it hard to detect diseases or harmful pathogens quickly.

A new testing system developed by researchers at the Army Medical University in China may help to fill that gap by allowing on-the-spot DNA tests in as quick as 80 minutes. According to the researchers, their test achieves 97 percent accuracy using simple 3D printed parts that attach to a standard smartphone and weigh less than 100 g rams (0.22 pounds).

At the heart of the system is an “i-chip” just four centimeters long that includes integrated sample preparation, DNA amplification, and signal detection modules. The various reagents required to carry out the test can be pre-loaded in the device, and the researchers showed that these could be kept for up to ten weeks at room temperature without loss of performance.

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An exhibition at the Science Gallery Dublin explores how humans are preparing to live in the harsh conditions of outer space — and how microorganisms might help us do so.

Space traveling is closer than many of us think. NASA has plans to send humans to Mars in the 2030s, and Elon Musk seems to have taken on a personal challenge of establishing a city on the red planet. He says the Martian city should reach a million inhabitants within 40 to 100 years.

However, the human body is not adapted to life in space. In zero gravity, muscles lose force, bones lose density, vision becomes blurry, and the immune system grows weaker. A study that sent astronaut Scott Kelly to space for a year showed that the regulation of his DNA — but not its actual sequence — changed as compared to his twin brother, who stayed on Earth.

It sounds like magic, but Bar-Ilan University researchers say the environmentally friendly disinfectant may be used daily to kill bacteria and viruses on all kinds of surfaces.

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Hate is hate. It is not limited by a political belief system or race.

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In his book Something Deeply Hidden, the physicist explores the idea of Many Worlds, which holds that the universe continually splits into new branches.