Health
New Drug Shows Promise in Treating Alzheimer’s Symptoms in Mice
A compound derived from common herbs has shown promising results in improving memory and reducing harmful brain protein build-ups in mice, potentially paving the way for new Alzheimer’s treatments.
Breakthrough Study on Memory Enhancement
Researchers from The Scripps Research Institute in the United States have successfully tested a derivative of carnosic acid, a molecule found in rosemary and sage, for its potential in treating Alzheimer’s disease. Their findings, published in the journal Antioxidants, suggest that the compound, called diAcCA, could play a crucial role in combating cognitive decline.
In their study, mice genetically modified to exhibit Alzheimer’s-like symptoms were treated with diAcCA for three months. The results were striking: the mice demonstrated significant improvements in learning and memory, along with an increase in synapses—the vital junctions where neurons communicate. Since synapse loss is strongly linked to cognitive decline, these findings indicate a potential breakthrough in Alzheimer’s research.
Reduction of Alzheimer’s Hallmarks
Beyond cognitive improvements, the treated mice exhibited a reduction in amyloid plaques and tau tangles—two harmful proteins associated with Alzheimer’s. These protein accumulations are key indicators of the disease in humans and contribute to the progressive cognitive deterioration seen in patients.
Professor Stuart Lipton, a senior author of the study, highlighted the dual benefits of diAcCA, stating, “By combating inflammation and oxidative stress, we actually increased the number of synapses in the brain. We also reduced the levels of misfolded or aggregated proteins such as phosphorylated tau and amyloid-β, which are known biomarkers of Alzheimer’s disease.”
An Innovative Approach with Antioxidant Properties
Carnosic acid, the parent molecule of diAcCA, is known for its antioxidant and anti-inflammatory properties. However, it degrades rapidly, making it difficult to use in medical applications. The researchers overcame this limitation by developing diAcCA, a more stable form of the compound that can be taken orally and converted into carnosic acid in the stomach before entering the bloodstream.
According to the study, the amount of the active compound in the blood of treated mice was 20% higher compared to traditional carnosic acid ingestion, suggesting greater efficacy. “We did multiple different tests of memory, and they were all improved with the drug,” Lipton noted. “It didn’t just slow down the decline; it improved virtually back to normal.”
Potential Implications for Alzheimer’s Treatment
Alzheimer’s disease is the most common form of dementia, accounting for 70% of cases. Currently affecting around 7 million people across Europe, this number is expected to double to 14 million by 2030 due to the ageing population.
With promising preclinical results, researchers hope that diAcCA could lead to a viable treatment for Alzheimer’s in humans. The next steps will involve further studies to confirm its effectiveness and safety before progressing to human trials. If successful, this research could mark a significant milestone in the fight against neurodegenerative diseases.
Health
Global Mental Health Cases Near 1.2 Billion as Anxiety and Depression Drive Sharp Worldwide Rise
A major global analysis has found that mental health conditions have surged to an estimated 1.2 billion people worldwide, driven largely by steep increases in anxiety and depression over the past three decades.
The findings, published in The Lancet as part of the Global Burden of Disease Study 2023, show that the number of people living with mental disorders has almost doubled since 1990, marking a 95% rise. Researchers say major depressive disorder and anxiety disorders have seen even sharper growth, increasing by 131% and 158% respectively, making them the most prevalent mental health conditions globally.
The report describes mental illnesses as widespread conditions that create long-term disability and significant human suffering. It also highlights broader consequences for economies and public services, including reduced productivity, lower workforce participation and increasing pressure on health and welfare systems.
Researchers estimate that in 2023 alone, around 620 million females and 552 million males were affected by mental health conditions. While the overall burden is rising across both sexes, the study points to notable differences in the types and prevalence of disorders.
Among women, depression and anxiety were the most commonly reported conditions, alongside higher rates of eating disorders such as anorexia nervosa and bulimia nervosa. The report links this disparity to a mix of biological, social and structural factors, including exposure to domestic violence, sexual abuse, gender inequality and reproductive health-related changes.
In contrast, neurodevelopmental and behavioural disorders, including attention deficit hyperactivity disorder (ADHD), conduct disorder and autism spectrum conditions, were more frequently diagnosed in men.
Teenagers aged 15 to 19 were identified as the group experiencing the highest mental health burden globally, raising concerns about early onset of conditions and insufficient preventive care for young people.
The study identifies several key risk factors associated with mental illness, including childhood sexual violence, bullying and intimate partner violence. These factors are strongly linked to conditions such as depression, schizophrenia, bipolar disorder and anxiety disorders. However, researchers note that such exposures have remained relatively stable over time and account for only a portion of the overall rise.
According to the authors, broader drivers are likely contributing to the increasing prevalence of mental disorders. These include genetic and biological influences, poverty, inequality, and the growing impact of global crises such as armed conflict, pandemics, natural disasters and climate-related stress.
While mental health conditions have long been a leading cause of disability worldwide, the report warns that the situation is worsening. At the same time, health systems have not expanded services at a pace matching demand.
The authors caution that the gap between rising need and limited access to care is becoming more pronounced, leaving millions without adequate treatment or support.
Health
Europe Records Sharp Rise in Sexually Transmitted Infections, ECDC Warns
Health
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