Recurrent brain tumors are extremely difficult to treat because they often return after surgery, radiation, and chemotherapy, leaving patients with few options and limited time. Many tumors grow in locations that cannot be safely reached through open surgery, and repeat operations are often too taxing for patients who have already undergone extensive treatment. Researchers at Washington University School of Medicine in St. Louis evaluated a minimally invasive laser‑based therapy that uses heat to destroy tumor tissue and may extend survival for people facing aggressive, recurrent disease. The approach, known as laser interstitial thermal therapy, uses a thin probe inserted through…

Opioid overdoses often become fatal because they occur without a bystander present to administer naloxone, the medication that rapidly reverses opioid effects. Synthetic opioids such as fentanyl act quickly and powerfully, leaving individuals unconscious before they can seek help. Researchers at Virginia Tech developed a wearable microneedle patch that detects fentanyl in the body and automatically releases naloxone, offering a potential safeguard for people at high risk of unwitnessed overdose. The device is designed to intervene autonomously, providing protection even when no one else is present. The patch, called the “iNal” patch, uses an array of 121 microscopic needles that…

Many chronic conditions require frequent monitoring of biomarkers that cannot be measured easily with conventional wearables. Sweat‑based sensors often struggle with low fluid volume, while blood‑based tests require needles and clinical visits. Researchers at the Hong Kong Polytechnic University developed a wearable microneedle patch that collects interstitial fluid beneath the skin and uses ultrasound to enhance both fluid extraction and biomarker detection. This combination enables continuous, painless monitoring of multiple health indicators and offers an alternative to traditional sampling methods for conditions such as diabetes, cardiovascular disease, and metabolic disorders. The patch uses an array of microscopic needles that penetrate…

Many neurological disorders are treated with electrical stimulation delivered through surgically implanted electrodes. These devices can help manage severe epilepsy, Parkinson’s disease, essential tremor, and other conditions when medications fail, but they require invasive brain surgery and place rigid metal components deep within neural tissue. Researchers at Skolkovo Institute of Science and Technology (Skoltech) in Russia and collaborating institutions developed a new approach that uses biocompatible magnetic microparticles to stimulate nerves remotely, offering a potential alternative that is far less invasive. The team demonstrated the concept by modulating the breathing and heart rate of a mouse through wireless stimulation of…

Glioblastoma remains one of the most difficult cancers to treat because its cells infiltrate healthy brain tissue, making complete surgical removal nearly impossible. Even when surgeons remove all visible tumor tissue, microscopic clusters often remain and lead to recurrence. The blood‑brain barrier further complicates treatment by limiting how well drugs and radiation reach the tumor site. Researchers at the University of Technology Sydney and collaborating institutions developed a multifunctional nanozyme platform designed to address both challenges using a single material activated by near‑infrared light. The platform is built from an ultrathin two‑dimensional sheet engineered with isolated platinum atoms placed individually…

Many medical devices that rely on light, such as pulse oximeters and wearable health sensors, struggle to perform consistently across different skin tones. Darker skin contains more melanin, which absorbs and scatters light, making it harder for optical devices to detect blood‑related signals accurately. This can lead to measurement errors that disproportionately affect people with darker skin, raising concerns about equity and patient safety. Researchers at the VTT Technical Research Centre of Finland developed new multilayer skin‑like test models designed to help engineers evaluate and improve optical devices before they reach patients. These models aim to provide a controlled, repeatable…

Ovarian cancer is difficult to treat because it often spreads throughout the peritoneal cavity, making it challenging to deliver therapy precisely where it is needed. Standard approaches rely on surgery and systemic treatments that struggle to reach microscopic disease and cannot be easily repeated without invasive procedures. Researchers at the University of Galway and collaborating institutions designed a replenishable implant that sits inside the peritoneal cavity and delivers therapy directly to the tumor environment while also monitoring how the disease responds. The implant is made from a flexible, porous biomaterial that conforms naturally to the body’s internal contours. It connects…

Gum disease often progresses because harmful bacteria disrupt the balance of the oral microbiome, leading to inflammation, bone loss, and long‑term damage to teeth. Conventional treatments such as antibiotics and antimicrobial photodynamic therapy remove both harmful and beneficial bacteria, which can destabilize the oral environment and trigger additional inflammation. Researchers at Nagoya University developed a targeted therapy that eliminates the key pathogen responsible for periodontitis while preserving the beneficial microbes that support oral health. The therapy adapts a near‑infrared photoimmunotherapy method originally used in cancer treatment. It uses an antibody linked to a dye that binds specifically to the gum‑disease…

Many wearable health sensors struggle to maintain reliable contact with the skin, especially when sweat, hair, bending, or stretching interfere with the electrode interface. These interruptions can distort biological signals and reduce the accuracy of devices used for monitoring chronic conditions. Researchers at Drexel University and Penn State University developed a new graphene‑reinforced hydrogel designed to solve this problem by creating a soft, breathable, adhesive interface that stays attached even under demanding real‑world conditions. The hydrogel is engineered to be ultrasoft, highly stretchable, and conformal. It incorporates porous laser‑induced graphene and reduced graphene oxide flakes, which form an internal network…

People living with Parkinson’s disease often face the challenge of maintaining consistent medication levels throughout the day. The effectiveness of treatment depends on how well the body absorbs and metabolizes each dose, yet traditional monitoring methods require blood samples or lab tests that are inconvenient and infrequent. A research team at the University of California San Diego has developed a fingertip patch that uses sweat to track medication levels continuously, offering a noninvasive way to personalize treatment. The patch is powered by the wearer’s own sweat. It contains a flexible sensor that detects chemical markers associated with Parkinson’s medication as…