Medicine

A new technique allows researchers to map how the cellular “skeleton” adapts to external stress.

Researchers from Osaka University have found that, after chronic social isolation, one form of ketamine—(R)-ketamine—is effective for restoring neuronal activation in a brain region known as the anterior insular cortex. This restored activation leads to improvements in social impairments in a mouse model of depression. Together, these findings indicate that (R)-ketamine is a promising treatment for social symptoms of depression and may lead to better quality of life for millions of people worldwide.

Regenerative therapy to treat heart failure is more effective when the mitochondria of the regenerative cells are activated prior to treatment.

Researchers at Osaka Metropolitan University assess why post-operative symptoms such as pins and needles, sudden cold, burning, itching, and numbness in the limbs remain in patients suffering from cervical spondylotic myelopathy, even after surgery. The researchers also evaluated the patients’ satisfaction with postoperative treatment. They found that it was lower for those who still had paresthesia in their hands and feet, regardless of whether their motor symptoms had improved or not.

In a step forward for breast cancer treatment, researchers at Tohoku University have developed a novel monoclonal antibody which specifically targets a certain type of breast cancer cell.

Vaccines and therapies based on messenger RNA could be more readily delivered due to a non-toxic polymer that protects RNA and controls its release inside cells.

Researchers from Osaka University found that the oral bacterium Streptococcus gordonii activates another bacterial species, Fusobacterium nucleatum, to produce large quantities of methyl mercaptan, a compound responsible for bad breath. Disrupting this interaction could therefore help treat halitosis, and possibly also help prevent the development of more serious tooth and gum disease.

Researchers from Osaka University have found that gargling with an antiseptic mouthwash can reduce so-called ‘bad’ bacteria in the mouths of patients with type 2 diabetes. Notably, this reduction in bacteria was accompanied by improved blood-sugar control in some patients. Given that the oral diseases caused by these bacteria have been linked to many other serious inflammation-associated diseases, such as cardiovascular disease and Alzheimer’s disease, this simple treatment may have widespread effects.

A new coating for tiny vaccine carriers allows vaccines to remain in the body for longer.

A team of researchers from Osaka Metropolitan University assessed the feasibility of conducting cardiopulmonary exercise testing with the upper limbs as an alternative to the conventional method that uses the lower limbs. The researchers investigated the relationship between heart rate and oxygen uptake during exercise stress tests using a cycle ergometer and an arm crank ergometer, and estimated maximal oxygen uptake. The study participants were 17 male collegiate athletes from rowing and cycling clubs. The results showed that the estimated maximal oxygen uptake for both rowing and cycling groups was lower on the arm crank ergometer than on the cycle ergometer. Additionally, this study showed that exercise testing using an upper extremity ergometer underestimates cardiopulmonary function, regardless of upper limb training status.

Asia Research News monitors the latest research news in Asia. Some highlights that caught our attention this week are how exercising to music can help cognitive function, a material inspired by a mythological creature, and choking cancer cells using calcium.

A study led by Duke-NUS Medical School has found an important connection between cancer, stem cells and the building blocks of cholesterol. Specifically, the research reveals how the enzyme FAXDC2 influences cancer cell growth and differentiation through its role in cholesterol synthesis, suggesting possible new approaches to cancer treatment.

A new technology to increase visibility of cancer cells to the immune system using CRISPR has been developed, and could lead to a new way to treat cancer.

Asia Research News monitors the latest research news in Asia. Some highlights that caught our attention this week are a closer step towards artificial spider silk, rocks made from plastic, and why a flightless dinosaur developed small wings.

Taiwan: Researchers from National Chung-Hsing University, Taiwan, have made a discovery in the fight against Zika virus. Their study, published in the journal “Communication Biology,” reveals that people who have previously been exposed to dengue virus and Japanese encephalitis virus may have acquired immunity against Zika virus. This finding may shed new light on vaccine strategies in countries where these viruses are common.

A water-soluble, luminescent europium complex enables evaluation of malignancy grade in model glioma tumor cells.

Researchers from Osaka University have discovered a novel treatment to relieve cytokine release syndrome (CRS), a life-threatening inflammation triggered by a serious infection or severe burn. Treatment with a short-acting antibody reduces the inflammatory effects of interleukin-6, a key cytokine in CRS while avoiding the side effects associated with previous longer-acting therapies.

Unleashing stem cells from dog urine, Electronic Tongue, Tapping into human motion energy, How neurons network, and A radical use for plastic bags. Plus Communicating science two decades on. Read all in the latest Editor's Choice.

Much is known about the added complication to pregnancy when it comes to the age of the mother, but recent studies show that the age of the father can also heighten the risk of neurodevelopmental disorders. A team of researchers has explored the impacts of paternal aging on microRNAs, the molecules that play a crucial role in regulating gene expression.

Asia Research News monitors the latest research news in Asia. Some highlights that caught our attention this week are self-sacrificing cancer cells, tiny new drones that kill cancer cells and a living “skin” that covers the Great Wall of China.

In a phase 2 trial, researchers from Osaka University have found that erythromycin, a commonly used antibiotic, has acceptable safety and tolerability profiles in patients with myotonic dystrophy type 1. This common form of muscular dystrophy currently has no cure, and the research team is hopeful that phase 2b and 3 trials will further reveal the efficacy of erythromycin as a treatment—at least in some patients.

Kavli IPMU researchers are part of a team that has shown it is possible to image small animal tissue clearly to several hundred micrometers using multi-probe imaging.

A research group led by Osaka University and University of Hawaii Manoa found that in female fruit flies, microorganisms enhance reproductive function, boosting the number of cells that form eggs and the number of mature eggs. This is done by controlling the release of hormones to speed up cell division in the ovaries, and limiting programmed cell death. These findings could improve reproductive medicine and could aid the development of new methods to enhance fertility.

Researchers from Osaka University have shown that the rare D-form of the amino acid alanine shows a clear circadian rhythm, and is able to affect the circadian clock and regulate gluconeogenesis, a method of glucose release, in the kidney. D-alanine upregulates genes linked to both gluconeogenesis and the circadian rhythm through the circadian transcriptional network. D-alanine is linked to many metabolic and immunological diseases, and this mechanistic insight could potentially lead to novel therapeutic approaches.

Researchers from Osaka University have discovered how amino acids activate a key cell, TORC1, which is a master regulator in living organisms that controls whether cells grow or recycle their contents in yeast. Notably, the team found that the amino acid cysteine is sensed by a protein called Pib2 and that the two bind together to trigger TORC1. This is important because faulty TORC1 has been linked to disease such as cancer.

We’re all familiar with our body’s internal clock: it gives us cues on when to wake and when to rest, but it also can determine the rate and time of day at which your body most effectively heals wounds.

A previously mysterious small RNA molecule in mice is found to play a crucial role in gene expression, and may be the first identified member of a new class of regulatory RNAs.

"Amaterasu" particle: a new cosmic mystery, Geckos inspire robotic device, Targeting cancer while protecting healthy cells, Honey, I shrunk the bear, Two species lost to science spotted again. Plus New Science Communication Resources. Read all in the latest Editor's Choice.

Researchers from Osaka University created an online space for conversation, collaboration and knowledge sharing among patients with rare diseases, their families, researchers and policymakers. A series of workshops generated evidence that could contribute to new policies in the field of rare diseases and explore ways that stakeholders could be involved in the process.

A research team led by Osaka Metropolitan University focused on generative AI as an information-gathering tool in the medical field. The results showed that one of the generative AIs suggested mostly fictitious references, while the other suggested multiple references with the same level of accuracy as the researchers. The use of generative AI in literature search suggests the possibility of efficiently collecting a vast amount of medical information, provided that users are well aware that the performance of generative AI is still in its infancy and that not all information presented is necessarily reliable. It is advised to use different generative AIs depending on the type of information needed.