Chinese scientists have reported findings recently in their latest experiments aboard the Tiangong space station: while brain cells migrates faster, muscle repair process is more slowly, and medicines for lipid metabolism disorders show a pronounced boost in potency in weightless environment.
The discoveries could reshape approaches to Alzheimer's therapy, muscle-atrophy prevention and next-generation drug research and development.
"Currently, our in-orbit observations show that neurons in organ-on-a-chip move faster in space than on the ground. This may indicate that the unique environment of space promotes cell movement in our brain tissue," said Jin Xuena, principal designer of life sciences of the Space Application Engineering and Technology Center under the Chinese Academy of Sciences.
A parallel experiment tracking skeletal-muscle precursor cells shows the opposite trend.
In the weightless environment, the cells' migration rate drops sharply and the overall timeline for muscle regeneration is delayed.
The finding underscores the difficulty of repairing damaged muscle in space.
A third study examined how lipid-nanoparticles ferry nucleic-acid drugs into cells.
On-orbit data reveal that cellular uptake of the drug is markedly higher in microgravity, and levels of disease-related proteins decline more rapidly.
"In a space environment, the therapeutic effects of drugs for lipid metabolism disorders are significantly enhanced. Therefore, the microgravity environment in space may serve as a new approach for future drug intervention or drug development," said Jin.
Experiments in China's space station create new path for treating brain disorders
Confirmed Ebola cases in the Democratic Republic of the Congo (DRC) and Uganda have surpassed 600 as response efforts face operational constraints, the Africa Centers for Disease Control and Prevention (Africa CDC) said Tuesday.
In its latest outbreak update, the African Union's specialized continental public health agency said confirmed Ebola cases in the DRC and Uganda have reached 608, with the death toll climbing to 102 as of Monday.
Uganda has reported no new confirmed cases in the last 24 hours. In the DRC, 45 new confirmed cases were reported during the past 24 hours, bringing the total there to 589, according to the Africa CDC.
The Africa CDC warned that ongoing response efforts are "facing significant operational constraints," noting that health facilities in several affected areas are in poor condition and often lack potable water, incinerators, personal protective equipment, and decontamination supplies.
Insecurity, a shortage of ambulances, growing staffing pressures with some health workers unpaid or without incentives, and poor roads are further slowing access and response operations, it said, while highlighting the existing lack of community trust as "a critical challenge" jeopardizing ongoing response efforts.
The agency also expressed concern over the negative impacts of travel restrictions imposed on affected and at-risk African countries despite guidance from the World Health Organization and the Africa CDC.
The Africa CDC outlined several "immediate priorities," including strengthening community engagement and risk communication, fast-tracking multidisciplinary rapid response teams to high-risk areas, addressing gaps in infection prevention and safe burial, as well as enhancing surveillance and contact follow-up.
Ebola cases in DR Congo, Uganda surpass 600 amid operational constraints: Africa CDC
