Haruka Sakai studies how people process sounds, particularly focusing on why some individuals hear better from their right ear, especially when listening to speech while distracted. She uses advanced brain imaging techniques to explore the connection between our brain’s structural makeup and our attention during sound tasks. Additionally, she investigates the impact of oral health on surgical outcomes, particularly in patients undergoing joint replacement surgeries. Her work looks at how infections in the mouth, like those from tooth extractions, might influence the risk of developing infections after such surgeries.
Key findings
In the study on auditory processing, increased brain activity in the left auditory region predicted better speech understanding when participants listened primarily with their left ear.
The multi-institutional study found that among nearly 4,000 patients, the overall surgical infection rate was 2%, but pre-surgery tooth extractions led to a lower infection rate of 2.7% compared to 6.2% for those who did not have extractions.
The research emphasizes that right-ear advantage is not merely anatomical but involves dynamic interactions with attention.
Frequently asked questions
Does Dr. Sakai study hearing issues?
Yes, she researches how people hear sounds, especially focusing on the differences between ears and how attention affects this.
What are the implications of Dr. Sakai's research for patients undergoing surgery?
Her findings suggest that addressing oral infections and considering tooth extractions may be important to lower the risk of infections after joint surgeries.
Has Dr. Sakai explored the impact of oral health on surgeries?
Yes, she has studied how oral infections can influence the risk of developing infections following artificial joint surgeries.
Publications in plain English
Role of Medullary AKT and p38 MAPK in Regulating Feeding of Broiler Chicks.
2026
The journal of poultry science
Saneyasu T, Kaihatsu M, Nagata K, Kitayama A, Sakai H +3 more
Plain English This study looked at how certain proteins in the brains of broiler chicks influence their eating habits. Researchers found that after the chicks fasted for 24 hours, specific proteins called AKT and p38 MAPK were more active when they were refed, but another protein, ERK, was not. This matters because understanding how these proteins work can help improve feeding efficiency and growth in broiler chicks, which are raised for meat production.
Who this helps: This helps poultry farmers and those involved in the poultry industry.
Transport evidence of current-induced nematic Dirac valleys in a parity-time-symmetric antiferromagnet.
2026
Nature communications
Sakai H, Miyamoto Y, Kimata M, Watanabe H, Yanase Y +4 more
Plain English Researchers studied a special type of material called antiferromagnet that has unique electronic properties. They found that when an electric current is applied, this material shows a significant change in its electrical resistance related to the direction of the current, specifically a two-fold response, which highlights the material's interesting behavior. This discovery could lead to new technologies in electronics that use these unique properties for better performance in electronic devices.
Who this helps: This helps researchers and engineers developing advanced electronic devices.
Hemothorax as the Initial Manifestation ofPositive Pulmonary Pleomorphic Carcinoma: A Case Report.
2026
Respirology case reports
Ikeda T, Matsumoto H, Iwagaki S, Ogawa R, Shimamura Y +3 more
Plain English This study looked at a rare form of lung cancer called pulmonary pleomorphic carcinoma (PPC), which typically progresses quickly and is difficult to treat. They presented a case where the cancer led to a severe internal bleeding event called hemothorax, which had not been documented before as an initial symptom of PPC. Instead of a typical diagnosis, the cancer’s rapid growth and the presence of a specific gene mutation (KRAS G12D) contributed to this unusual scenario, highlighting the need for immediate treatment to improve patient outcomes.
Who this helps: This helps doctors understand the potential symptoms of PPC and improves care for lung cancer patients.
Caldiplasma sukawensis gen. nov., sp. nov., and Cuniculiplasma thermophilum sp. nov., mesophilic, acidophilic, cell-wall-less, archaea of the order Thermoplasmatales, isolated from extremely acidic hot spring.
2026
Systematic and applied microbiology
Tsukamoto Y, Sakai HD, Takano Y, Koga T, Nishihara A +3 more
Plain English Researchers studied four new types of single-celled organisms called archaea found in a very acidic hot spring. These organisms can grow at temperatures between 15°C and 55°C and thrive in low pH conditions (as acidic as 1.5), and the study identified characteristics that distinguish them from each other, such as size and growth conditions. Specifically, they named two of the new species Caldiplasma sukawensis and Cuniculiplasma thermophilum, which may help us understand how life can survive in extreme environments and the diversity of microbial life.
Who this helps: This research benefits scientists studying extremophiles and microbial biology.
Identification and characterization of low-sulfur-inducible genes and pathways in roots of upland and lowland rice grown under hydroponic and soil conditions.
2026
Journal of experimental botany
Maruyama K, Tsujimoto Y, Kishimoto M, Yoshiwara K, Sakai H +4 more
Plain English This study looked at how two types of rice, upland and lowland varieties, respond to low-sulfur conditions, which are increasingly affecting how well crops grow. Researchers found specific genes that help rice plants deal with low-sulfur environments, with one key gene promoting longer root growth when sulfur is scarce. Understanding these mechanisms is important because it can lead to improved rice varieties that thrive in low-sulfur soils, which is crucial for agricultural productivity.
Who this helps: This helps farmers and agricultural scientists looking to improve rice crops in low-sulfur areas.
Improved Messenger RNA Stability and Biocompatibility Through Self-Gelatinizable Nucleic Acids.
2026
Biotechnology and bioengineering
Tanifuji T, Kusamori K, Tanaka C, Sakai H, Itakura S +1 more
Plain English This study focused on improving the stability and safety of messenger RNA (mRNA) to make it more effective for medical treatments. Researchers created a DNA hydrogel that holds the mRNA and keeps it stable in the body. They found that this hydrogel allowed for consistent protein production with minimal side effects, significantly increasing the mRNA's shelf life and resistance to breakdown.
Who this helps: This helps patients who may benefit from mRNA-based therapies, as well as healthcare providers using these treatments.
Synthesis and characterization of lithium- and strontium-releasing smart bioactive glasses for direct pulp capping application.
2026
Dental materials : official publication of the Academy of Dental Materials
Sakai H, Sasaki JI, Kitagawa H, Funayama N, Inubushi T +4 more
Plain English This study explored new materials for treating damaged tooth pulp by developing special glasses that release lithium and strontium over time. The researchers found that these materials not only reduced inflammation but also helped tooth cells regenerate dentin, with notable success in a rat model; they prevented tissue death after 3 days and promoted healing by day 28. This is important because it offers a better way to treat tooth injuries without the inflammation that current methods often cause.
Who this helps: Patients needing dental pulp treatment.
Comparison of tofacitinib, baricitinib, upadacitinib and filgotinib: a 2-year observational study from FIRST registry.
2026
RMD open
Sonomoto K, Nakayamada S, Sakai H, Ueno M, Tanaka H +5 more
Plain English This study looked at the effectiveness of four medications for treating rheumatoid arthritis over two years: tofacitinib, baricitinib, upadacitinib, and filgotinib. It found that all four medications had similar overall effectiveness, but nearly 79% of patients continued their treatment after two years. However, issues like lack of effectiveness and side effects led to some patients stopping their medication, with the most common reason being that the drugs weren't working well enough for them.
Who this helps: This research benefits patients with rheumatoid arthritis by providing insights into the long-term effectiveness of these treatments.
Predicting the progression of difficult-to-treat rheumatoid arthritis by a machine learning scoring system, from the FIRST registry.
2026
RMD open
Ueno M, Sonomoto K, Tanaka H, Nagayasu A, Aritomi T +9 more
Plain English This study looked at how to predict the worsening of hard-to-treat rheumatoid arthritis in patients starting certain medications. Researchers analyzed data from 1,221 patients and found that 15.8% of them progressed to the more severe form of the disease after about 54 months. They created a scoring system based on key factors like pain levels and existing lung issues, which helps doctors identify patients at high risk and shows that treatment with specific drugs can significantly lower the risk of the disease worsening.
Who this helps: This helps patients with rheumatoid arthritis and their doctors find the best treatment options.
Response to "Excessive Visceral Adipose Tissue Accumulation Increases the Risk of Recurrence and Mortality After Curative Treatment for Metabolic Dysfunction-Associated Steatotic Liver Disease-Associated Hepatocellular Carcinoma".
2026
Hepatology research : the official journal of the Japan Society of Hepatology
Pivotal contribution of super-enhancer-driven KLF6 expression to the adipogenesis of human adipose-derived stem cells.
2026
Inflammation and regeneration
Nguyen MP, Yamagata K, Nguyen AP, Zhang T, Sakai H +9 more
Plain English This study looked at how a specific enhancer, known as a super-enhancer, influences the production of fat cells from human stem cells. Researchers found that when they activated a gene called KLF6 using a specialized medium, KLF6 levels went up, leading to more fat cell formation. Specifically, treatments that blocked this enhancer reduced KLF6 expression and fat cell development by about 50% in lab tests. Understanding this process can help develop new treatments for obesity by targeting these genetic pathways.
Who this helps: This research benefits patients struggling with obesity.
Rheological Properties of Hemoglobin-Based Physical and Chemical Gels, and Their Hybrid.
2026
ACS omega
Matsuhira T, Sakai H
Plain English This study looked at different types of gels made from hemoglobin, a protein found in blood, to understand how they behave and can be used as materials. Researchers compared gels made with regular hemoglobin to those with a modified version called XLHb, finding that the regular hemoglobin-based gels were more liquid-like and could heal themselves, while the XLHb gels were solid and stable. The transition between these two states occurred when the XLHb content reached between 80% and 90%, which helps in creating gels tailored for specific uses in medicine.
Who this helps: This benefits medical researchers and developers creating advanced materials for treatments or medical devices.
Haemoglobin vesicles as artificial red blood cells developed for use as a transfusion alternative: an open-label, single-centre phase Ib study protocol in Japan.
2026
BMJ open
Sakai K, Asada K, Watanabe Y, Azuma H, Sakai H +2 more
Plain English This study is looking at new artificial red blood cells made from haemoglobin vesicles (HbVs), which could be used instead of blood transfusions in emergencies. The researchers will test the safety of these HbVs in 16 healthy adults, administering doses ranging from 100 to 400 mL and monitoring for any side effects or changes in health for 14 days after treatment. Understanding how safe these artificial red blood cells are is important because it could lead to a new option for patients who need blood urgently.
Who this helps: This helps patients who require blood transfusions, especially in emergency situations.
Immediate Effect of Digital Game Use and Verbal Encouragement on Lower Limb Activity and Psychological Enjoyment During Motor Task in Children with Motor Disorders.
2026
Physical & occupational therapy in pediatrics
Asano D, Sakai H, Monden H, Shimazaki Y, Nakamura K +1 more
Plain English This study looked at how digital games and verbal encouragement affect the physical activity and enjoyment of children with motor disorders during foot-stomping exercises. Researchers found that using a game increased the children’s foot-stomping activity and made the activity more enjoyable. Specifically, younger children and those with more severe motor impairments showed the greatest increase in activity when playing the game.
Who this helps: This benefits children with motor disorders and their therapists.
Gate-opening cooperative methanol binding to multi-bladed benzenes bearing 1,2-diboryl functionality.
2026
Chemical communications (Cambridge, England)
Song Y, Yokoyama H, Shoji Y, Sakai H, Hasobe T +1 more
Plain English This study explored how a new chemical compound, made of multiple connected benzene rings, binds with methanol molecules. The researchers found that the compound can capture more than three methanol molecules at once, which shows a strong and effective interaction. This finding is important because it could lead to better methods for using methanol in various chemical processes.
Who this helps: This benefits researchers and industries working with methanol in energy and chemical production.
Practice and impact of selection and centralization for oral cancer services: a scenario analysis.
2026
BMC cancer
Sakai H, Shibata A, Miyamoto K, Matsuzawa K, Otagiri H +1 more
Plain English This study looked at how organizing and centralizing care for oral cancer could improve patient outcomes in Japan. Researchers found that while early-stage cases could be treated in any hospital, advanced cases (Stage III and IV) had better survival rates when treated at specialized cancer centers. Specifically, survival rates improved for patients with advanced cancer after implementing these care scenarios.
Who this helps: This benefits patients with oral cancer, ensuring they receive the best possible treatment based on their disease stage.
Methotrexate-Associated Lymphoproliferative Disorders Characterized by a T-Cell Phenotype With Lung and Psoas Involvement: A Case Report.
2026
Case reports in medicine
Arai K, Tokuyasu H, Sueda Y, Sakai H, Watase H +4 more
Plain English This study focuses on a rare condition linked to the medication methotrexate, which is often used to treat rheumatoid arthritis. Researchers reported a case of a 66-year-old man who developed a type of cancer called peripheral T-cell lymphoma that affected his lungs and muscle after taking methotrexate for eight years. After stopping the medication, his condition improved rapidly, highlighting the potential risks of long-term methotrexate use.
Who this helps: This information benefits patients using methotrexate and doctors managing their treatment.
Potential involvement of the endoplasmic reticulum stress response in the development of cisplatin-induced muscle atrophy.
2026
The Journal of toxicological sciences
Soga S, Nanri H, Sakai H, Ichikawa R, Chigusa Y +8 more
Plain English This study looked at how the chemotherapy drug cisplatin causes muscle loss in mice and whether a specific stress response in cells, called endoplasmic reticulum (ER) stress, plays a role. Researchers found that while all treated mice lost weight, those given cisplatin lost significantly more muscle. Specifically, they noticed an increase in certain proteins that break down muscle and a decrease in a protein that helps build it, indicating that cisplatin may lead to muscle loss through triggering ER stress.
Who this helps: This research benefits cancer patients receiving chemotherapy by highlighting a new approach to prevent muscle wasting during treatment.
Successful treatment of synchronous double lung and colon cancers using immune checkpoint inhibitors.
2026
Internal medicine (Tokyo, Japan)
Matsuoka S, Tokuyasu H, Arai K, Sakai H, Esumi C +1 more
Plain English This study looked at a patient with both advanced lung and colon cancers and found that a combination treatment using immune checkpoint inhibitors—anti-PD-L1 and anti-CTLA-4 antibodies—along with chemotherapy was successful in treating both cancers. The lung cancer was initially targeted, and tests showed high-frequency microsatellite instability in the colon cancer. This is important because it demonstrates that these treatment strategies can be effective for certain types of cancers that are typically difficult to treat.
Who this helps: This benefits patients with advanced lung and colorectal cancers.
Evaluation of the composite materials mixed with calcium phosphate cement and β-tricalcium phosphate granules.
2026
International journal of implant dentistry
Yumoto E, Sakai H, Liu Y, Liu J, Okaniwa R +3 more
Plain English This study looked at a combination of materials used for bone repair, specifically calcium phosphate cement mixed with different amounts of beta-tricalcium phosphate granules. The researchers found that the mix containing 30% beta-tricalcium phosphate had a compressive strength of 1.5 MPa, allowed for good penetration into bone, and showed improved bone growth after 4 and 8 weeks of implantation. This is important because it means the new material could work better for healing broken bones, despite being weaker than other options.
Who this helps: This benefits patients needing bone repair.
Observation of Photophysical Processes of a Heptacene Derivative: Monomeric Behavior in Homogeneous Solution and Singlet Fission in Thin Film.
2026
Journal of the American Chemical Society
Suzuki S, Sakai H, Yamauchi M, Hayashi H, Mizuhata Y +4 more
Plain English This study focused on a specific compound derived from heptacene, examining how it behaves when exposed to light in both liquid and solid forms. The researchers found that in a diluted liquid solution, the compound does not efficiently undergo a process called "singlet fission," where one excited state splits into two; instead, it primarily forms triplet states, with a creation rate of triplets at about 2% and a longer triplet lifespan of 19 microseconds. However, in solid thin films, the compound shows a much higher success rate of forming triplet pairs, with efficiencies reaching 75%. These findings are important because they enhance our understanding of how certain materials behave under light, which can inform the development of better solar cells and other light-harvesting technologies.
Who this helps: This research benefits scientists and engineers working on advanced solar energy technologies.
Real-world effectiveness of b/tsDMARD switching in low-inflammatory difficult-to-treat rheumatoid arthritis: insights from the FIRST registry.
2026
RMD open
Sakai H, Sonomoto K, Nakayamada S, Ueno M, Nagayasu A +9 more
Plain English This study looked at how effective it is for patients with hard-to-treat rheumatoid arthritis, who have low inflammation, to switch their medications to different biological or targeted drugs. Out of 173 patients with this condition, those who switched medications saw a significant improvement in their overall disease activity scores after six months, with scores dropping by an average of 6.6 points compared to just 2.2 points for those who did not switch. This finding is important because it shows that even patients with lower inflammation can still benefit from changing their treatment, suggesting that doctors shouldn't shy away from trying stronger medications for these patients.
Who this helps: Patients with low-inflammatory rheumatoid arthritis.
Clinical Characteristics of Patients With Advanced Hepatocellular Carcinoma Who Transitioned to Subsequent Therapies Following Systemic Therapy.
2026
Cancer medicine
Imai K, Takai K, Aiba M, Unome S, Miwa T +5 more
Plain English This study examined the characteristics of 136 patients with advanced liver cancer (hepatocellular carcinoma) who either continued with additional treatments after their initial therapy or did not. The researchers found that those who switched to further treatments had a much longer average survival time of 29.3 months compared to just 10.7 months for those who didn’t. Important factors that helped patients move to subsequent therapies included having a favorable liver function score and receiving certain immune treatments.
Who this helps: This research benefits patients with advanced liver cancer and their doctors.
Large Language Models for Health Care Text Classification: Systematic Review.
2026
JMIR AI
Sakai H, Lam SS
Plain English This study looked at how large language models (LLMs) can be used to classify health care texts, which is important for tasks like analyzing clinical notes and coding diagnoses. It found that LLMs were more effective than traditional methods, with 65 studies reviewed showing that over 80% of them used LLMs, which often performed better in terms of accuracy. This matters because it can improve efficiency and reduce costs in health care by automating text classification while also ensuring patient data privacy.
Who this helps: This benefits patients and healthcare providers by improving the accuracy of medical information processing.
The antitumor mechanism of oclacitinib in canine lymphoma.
2026
Scientific reports
Harada M, Inanaga S, Sakurai M, Shibutani S, Sugasawa T +7 more
Plain English This study explored how oclacitinib, a medication used for skin issues in dogs, works against certain types of cancer called lymphoma. The researchers found that oclacitinib effectively stopped the growth of five lymphoma cell lines and triggered cell death by affecting specific proteins involved in cell signaling, particularly JAK1 and STAT5. This is important because it shows that oclacitinib may be a potential treatment for dogs with various forms of lymphoma, not just skin-related ones.
Who this helps: This benefits dogs diagnosed with lymphoma and their veterinarians.
Role of Periostin in the Development of Nasal Hyperresponsiveness in Mice with Allergic Rhinitis.
2026
International journal of molecular sciences
Adachi Y, Ando Y, Nagaosa K, Maeno M, Yamashita M +5 more
Plain English This study focused on a protein called periostin and its role in increasing nasal sensitivity in mice with allergic rhinitis (AR). The researchers found that when these mice were exposed to pollen, their noses became more reactive to histamine, and this was linked to higher levels of periostin in their nasal tissue. Understanding this connection is important because it could lead to new treatments for allergic rhinitis that target periostin to reduce symptoms.
Who this helps: This helps patients suffering from allergic rhinitis.
Effects of Sasa veitchii extract on intestinal epithelial cells and gut microbiota.
2026
Journal of natural medicines
Kon R, Ohkuma M, Toyonaga M, Tomimoto R, Ikarashi N +4 more
Plain English This study looked at the effects of a plant extract from Sasa veitchii on gut health in mice. The researchers found that after 21 days of treatment, the extract increased important proteins that help seal the intestinal barrier and altered the gut bacteria by reducing some harmful types while increasing beneficial ones. This is significant because it suggests that Sasa veitchii extract could support intestinal health and prevent issues like infections or inflammation.
Who this helps: This helps patients with gut health issues and doctors treating those conditions.
Solitary Hepatic Metastasis of Thymoma: A Case Report.
2026
Surgical case reports
Sakai H, Tominaga Y, Yoshida K, Fukudome I, Mizukami Y +3 more
Plain English This study examines a rare case of a thymoma—a type of tumor—spreading to the liver in a 61-year-old woman. After identifying and removing the original thymoma, doctors found a liver tumor 18 months later and successfully removed it. The patient showed no signs of the disease returning afterward, highlighting the importance of surgery for treating solitary liver metastasis from thymomas, even though there is little research on this area.
Who this helps: This information is valuable for doctors and patients dealing with thymoma and potential liver metastasis.
Shimizu T, Sumiyoshi S, Fujita K, Fujii T, Toba T +2 more
Plain English This study looked at how iguratimod, a drug used to treat rheumatic diseases, affects specific channels in cells (VSOR Clchannels) that help regulate immune responses. Researchers found that iguratimod reduces the activity of these channels when cells are under stress from low water levels, and it does this by increasing the amount of arachidonic acid in the cells. This is important because it helps explain how iguratimod might reduce inflammation in conditions like arthritis.
Who this helps: This benefits patients with rheumatic diseases.
Impact of haemoglobin vesicles on pretransfusion testing and mitigation strategies.
2026
Vox sanguinis
Omae K, Sakai K, Tanaka H, Taniyama A, Hasegawa M +2 more
Plain English This study looked at how a new type of hemoglobin-based product, called hemoglobin vesicles (HbVs), affects blood tests that determine compatibility for transfusions. The researchers found that when blood mixed with HbVs developed a dark-red color, it interfered with accurate test results, but they discovered that manual or automated washing could fix this problem for some tests. This research matters because it helps ensure that patients receive safe blood transfusions even when new products like HbVs are used.
Who this helps: This helps doctors and blood banks ensure safe blood transfusions for patients in emergencies.
Pathophysiological Roles of Two Intracellular P-Type ATPases: The Cancer-Associated Na,K-ATPase α3 Isoform and the Parkinson's Disease-Related ATP13A2.
2026
International journal of molecular sciences
Fujii T, Shimizu T, Sakai H
Plain English This study looked at two proteins involved in serious health issues: a protein linked to cancer (called Na,K-ATPase α3) and another associated with Parkinson's disease (ATP13A2). Researchers found that the cancer-related protein is often found in high amounts in cancer cells and helps these cells survive even when detached from their original location, making it harder to treat the disease. Meanwhile, loss of the Parkinson's-related protein leads to brain cell degeneration and other cognitive issues as animals age. Understanding how these proteins work is important because they might be targeted for new cancer treatments and therapies for Parkinson's disease.
Who this helps: This research benefits patients dealing with cancer and Parkinson's disease.
Mechanistic machine learning enables interpretable and generalizable prediction of prime editing outcomes.
2026
bioRxiv : the preprint server for biology
Hsu A, Chen PJ, Li AH, Hemez CF, Gao XD +22 more
Plain English This study focused on improving a technology called prime editing, which can make precise changes to DNA. Researchers developed a machine learning model, named OptiPrime, that accurately predicts how effective these DNA edits will be. They found that OptiPrime not only predicts the efficiency of different editing methods but also helps identify better editing strategies, leading to more effective treatments in laboratory settings, including correcting harmful mutations in mice.
Who this helps: This benefits researchers and healthcare providers working on gene therapies for genetic disorders.
Effectiveness of a Physician-Pharmacist Collaborative Protocol for Universal Hepatitis B Virus Screening Prior to Chemotherapy in Cancer Patients.
2026
Anticancer research
Kato-Hayashi H, Imai K, Ishida M, Kobayashi R, Iihara H +4 more
Plain English This study looked at how well a new system that involves both doctors and pharmacists works in making sure cancer patients are tested for hepatitis B virus (HBV) before they begin chemotherapy. After the new system was introduced, testing rates for important HBV-related tests rose from 59.6% to 98%, and no patients experienced HBV reactivation during the study. This improvement is important because it helps ensure that cancer patients are safely managed while getting chemotherapy, reducing the risk of complications.
Who this helps: Cancer patients undergoing chemotherapy.
Association between fundus sex index and hypertension, diabetes mellitus, and smoking in the Kumejima study.
2026
Japanese journal of ophthalmology
Yamashita T, Asaoka R, Iwase A, Sakai H, Terasaki H +2 more
Plain English This study looked at the relationship between a measure of eye health called the fundus sex index (FSI), which indicates masculinity or femininity, and health issues like smoking, high blood pressure (hypertension), and diabetes in people from Kumejima. The researchers found that women with hypertension or diabetes tended to have a more feminine FSI than those without these conditions, while smoking was associated with a lower FSI overall. These findings may help in understanding how these health conditions affect eye characteristics, potentially guiding future health assessments.
Who this helps: This helps doctors and health professionals understand eye health in relation to hypertension and diabetes in women.
β-Nicotinamide mononucleotide preserves muscle strength in septic male mice.
2026
Scientific reports
Saida M, Saeki N, Sakai H, Iwanami J, Yokoyama A +4 more
Plain English This study looked at how sepsis affects muscle strength in mice and found that even after recovering muscle mass, the mice still had weakened muscles due to issues with their cells’ energy factories (mitochondria). Specifically, treatment with a substance called β-nicotinamide mononucleotide (β-NMN) helped improve muscle strength without affecting muscle size. This matters because finding ways to help muscle recovery after critical illness can significantly improve the quality of life for patients who survive severe infections.
Who this helps: Patients recovering from severe infections and their healthcare providers.
Biological/targeted synthetic DMARDs do not arrest bone loss in patients with rheumatoid arthritis: a long-term multicenter observational study.
2026
Arthritis & rheumatology (Hoboken, N.J.)
Aritomi T, Sonomoto K, Nakayamada S, Tanaka H, Nagayasu A +26 more
Plain English This study investigated whether a type of medication for rheumatoid arthritis (RA), known as biologic or targeted synthetic DMARDs, could help prevent bone loss in patients with RA over a long period. The research followed 797 patients for an average of 3.1 years and found that 58% experienced a decrease in bone density despite controlling their RA symptoms; those not receiving additional osteoporosis treatment saw their bone density decline significantly. These findings show that simply treating RA may not be enough to protect against osteoporosis, highlighting the need for dedicated bone health management in these patients.
Who this helps: Patients with rheumatoid arthritis at risk of osteoporosis.
Conformationally Driven Dual Fluorescence Properties of Higher Heteroacenes With Periodically Incorporated Boron Atoms.
2026
Angewandte Chemie (International ed. in English)
Yokochi T, Yokoyama H, Tsukada T, Sakai H, Hasobe T +2 more
Plain English This study focused on a new type of compounds called heteroacenes, which include boron atoms, specifically examining three examples: hexaboraheptacene (B-hept), tetraborapentacene (B-pent), and diboraanthracene (B-ant). The researchers found that B-hept has unique light-emitting properties that change based on the environment and the way it is excited, showing two different types of light emission, unlike the other two compounds, which showed less or no such behavior. This work is important because it not only introduces new materials that could be used in electronics and catalysis but also helps understand how the arrangement of atoms influences their properties.
Who this helps: This benefits researchers and developers in the fields of optoelectronics and materials science.
Analysis of immune-related alterations in blood and spinal cord of canine degenerative myelopathy, a spontaneous model of amyotrophic lateral sclerosis.
2026
Scientific reports
Yokota S, Kobatake Y, Yoshida K, Kamishina H, Yamato O +7 more
Plain English This study looked at how the immune system is involved in canine degenerative myelopathy (DM), a disease similar to ALS in humans. Researchers found that certain immune markers, such as interleukin-18, were significantly higher in the blood of dogs with DM compared to healthy dogs, indicating increased immune activity. Although some immune cells were found in affected spinal cords, their limited presence suggests they play a small role in the degeneration process of the disease.
Who this helps: This research benefits veterinarians and pet owners dealing with degenerative myelopathy in dogs.
Effectiveness and Safety of Sarilumab in Polymyalgia Rheumatica: a retrospective study of the FIRST Registry.
2026
Modern rheumatology
Ohkubo N, Miyazaki Y, Kubo S, Miyagawa I, Sonomoto K +15 more
Plain English This study looked at the effectiveness and safety of a medication called sarilumab for patients with polymyalgia rheumatica (PMR) who also had rheumatoid arthritis (RA). Out of over 5,600 patients, 67 used sarilumab as their first treatment for PMR, while 76 received standard care. After one year, 77.5% of the sarilumab patients continued the treatment, and they experienced a significant improvement in their disease activity levels compared to those on standard therapy.
Who this helps: This information helps patients with PMR and RA and their doctors in making treatment decisions.
Cisplatin-associated transcriptional changes in ER stress-related genes in skeletal muscle and C2C12 myotubes.
2026
Toxicology mechanisms and methods
Nanri H, Sakai H, Soga S, Chigusa Y, Ichikawa R +4 more
Plain English This study investigated how the chemotherapy drug cisplatin affects muscle tissue in mice and muscle cells grown in the lab. The researchers found that after just four days of treatment with cisplatin, mice lost a notable amount of muscle mass—specifically in their quadriceps—and showed increased activity of genes linked to muscle wasting. This kind of muscle loss and the resulting stress on muscle cells are important to understand as they can significantly impact recovery in cancer patients who receive this drug.
Who this helps: This research benefits patients undergoing chemotherapy, helping doctors better manage muscle health during treatment.
A paradigm shift in genetic predisposition to colorectal cancer: the impact of germline multigene panel testing on diagnosis and management.
2026
International journal of clinical oncology
Fujiyoshi K, Sudo T, Shimamura S, Sugihara R, Hisada K +14 more
Plain English This study looked at how genetic testing affects the diagnosis and treatment of colorectal cancer, which can be partly caused by inherited genes. It found that 3.3 to 15.5% of people with colorectal cancer have harmful genetic variants, and this rate is even higher, over 15%, in younger patients diagnosed before age 50. This shift towards more personalized medicine using genetic information can lead to better management of the disease and emphasizes the need for universal genetic screening, especially for young patients.
Who this helps: This benefits patients with colorectal cancer and their families, as well as healthcare providers managing their care.
Dorsal Hand Reconstruction With Large Superficial Circumflex Iliac Artery Pure Skin Perforator Flap Without High-frequency Doppler Ultrasound.
2026
Plastic and reconstructive surgery. Global open
Sakai H, Sun JM, Machida T, Mishige G, Yanase S +2 more
Plain English This study focused on using a specific type of skin flap for reconstructing a man's hand after a serious injury. The researchers treated a 70-year-old man with a large soft-tissue defect and successfully used a skin flap without high-tech imaging, leading to no complications after six months. This approach is important because it shows that effective hand reconstruction can be done even in situations where advanced ultrasound technology is not available.
Who this helps: This benefits patients needing hand reconstruction who may not have access to advanced medical imaging.
Suppression of Indoleamine 2,3-Dioxygenase Enhances Immune Responses to the Therapeutic Vaccine for Chronic Hepatitis B.
2026
Hepatology research : the official journal of the Japan Society of Hepatology
Shirakami Y, Ninomiya S, Ideta T, Kanbe A, Maeda T +11 more
Plain English This study looked at how a specific enzyme, IDO, affects the immune system's response to a hepatitis B vaccine called NASVAC. Researchers found that when IDO was blocked or removed in mice, the vaccine worked significantly better, boosting the immune response. In humans, those with lower levels of a substance called kynurenine in their blood before receiving the vaccine were more likely to develop protective antibodies afterward.
Who this helps: This research benefits patients with chronic hepatitis B by improving vaccine effectiveness.
Characteristics of a multigene assay (MammaPrint/Blueprint) to predict early recurrence of hormone receptor-positive, HER2-negative breast cancer: a case‒control study (WJOG16722B).
2026
Breast cancer (Tokyo, Japan)
Watanuki R, Sakai H, Kimura Y, Yoshida A, Ozaki Y +10 more
Plain English This study looked at how well certain tests (MammaPrint and BluePrint) can predict if patients with hormone receptor-positive, HER2-negative breast cancer will have an early return of the disease after surgery. They found that 79% of patients who experienced early recurrence had high-risk MammaPrint results, compared to just 40% of those who did not have a recurrence. Understanding these risks is important since it can help doctors tailor treatments to prevent the cancer from coming back.
Who this helps: Patients with hormone receptor-positive, HER2-negative breast cancer and their doctors.
Oncologic impact of additional pancreaticoduodenectomy for distal margin-positive perihilar cholangiocarcinoma: a multi-decade single-center analysis.
2026
Surgery today
Yasukawa K, Shimizu A, Kubota K, Notake T, Hosoda K +3 more
Plain English This study looked at patients with perihilar cholangiocarcinoma (a type of bile duct cancer) who had a positive cancer margin during surgery, meaning some cancer cells were left behind. Researchers compared two groups: one that had an additional surgery called pancreatoduodenectomy (ad-PD) and another that only had the initial liver surgery. They found that those who had the ad-PD surgery achieved a 100% rate of removing all detectable cancer, while the other group had none, and although more patients in the ad-PD group had major complications, there were no deaths in either group.
Who this helps: This research helps patients with bile duct cancer by providing them with information about a potential surgical option that could improve their chances of survival.
Multi-institutional observational study on the relationship between oral infection focus and surgical site infection in artificial arthroplasty and the clinical significance of tooth extraction: An analysis using propensity score matching.
2026
Journal of dental sciences
Kitamura R, Soutome S, Wada N, Akita D, Hasegawa T +28 more
Plain English This study looked at how infections in the mouth might lead to infections after surgeries to replace hips or knees. Researchers analyzed data from nearly 4,000 patients and found that while overall 2% of patients got infections after surgery, those who had tooth extractions before their surgery seemed to have a slightly higher risk of infection than those who did not, but the difference was not significant. However, among closely matched patients, those who had their tooth removed before surgery had a lower infection rate of 2.7% compared to 6.2% for those without tooth extractions, suggesting that removing infected teeth beforehand may help reduce the risk of surgical site infections.
Who this helps: This information is valuable for patients preparing for artificial joint surgeries.
Dynamic Interaction Between Structural Asymmetry and Attention in the Right-Ear Advantage Revealed by MEG-Based ASSRs.
2026
Brain sciences
Tanaka K, Yamada R, Kanamaru M, Obuchi C, Okamoto H +2 more
Plain English This study used brain imaging to examine why people hear speech better in the right ear during divided listening tasks. When participants focused on the harder-to-process left ear, their left auditory brain region worked harder and its activity directly predicted how well they understood speech. The right-ear advantage is not fixed anatomy but a dynamic interplay between brain structure and active attention.
[A Case of Small Intestinal Metastasis from Small Cell Lung Carcinoma Presenting with Gastrointestinal Bleeding].
2025
Gan to kagaku ryoho. Cancer & chemotherapy
Arai S, Muroya D, Tsuru H, Miyazaki D, Hashimoto K +7 more
Plain English This study examined an 80-year-old woman who had developed a bleeding tumor in her small intestine two years after having surgery for small cell lung cancer. Doctors performed surgery to remove part of her small intestine, and tests confirmed that the tumor had spread from her lung cancer. The patient did not receive further treatment because of her age and health conditions, but she has been cancer-free for seven months since the surgery.
Who this helps: This helps patients with rare cases of cancer spread, as well as their doctors in understanding treatment options.