Women diagnosed with breast cancer through physical examination are more likely to undergo chemotherapy and mastectomy compared to those detected by screening mammography. The study found that cancers detected by mammography were smaller and had lower rates of lymph node spread, allowing for less-toxic treatment options.
Researchers engineered mice to lose glucocorticoid receptors, showing an increase in depression-like behaviors and impaired regulation of stress response. This study suggests that genetic makeup may play a role in triggering depression by affecting the brain's ability to regulate adrenal hormones.
A new technique detects lymph node metastases in cancer patients using nanoparticles and MRI, providing unprecedented accuracy and potentially sparing unnecessary surgery. The method involves tracking nodes with magnetic particles, identifying patterns for normal and malignant nodes, and generating a 3D reconstruction of the lymph nodes.
Researchers at UC Santa Cruz have identified a highly conserved RNA structure, known as s2m RNA, in the SARS virus. This unique feature appears to be capable of binding to proteins involved in regulating protein synthesis in cells, leading scientists to hypothesize that it may hijack the host cell's machinery for viral use.
A recent study investigated whether NCI cancer centers have better outcomes due to their designation. The research found that perioperative mortality was lower at these centers for four out of six procedures, but five-year survival rates did not differ significantly between the two types of institutions.
The Life Sciences Research Office has established scientific criteria to assess the impact of non-tobacco additives on cigarette smokers. The criteria focus on identifying potential risks and determining safe levels of additives, while considering inhalation testing within a smoke matrix.
The new guidelines provide a comprehensive review of related studies on the most effective medicines to treat migraine attacks and prevent attacks in children with frequent migraines. However, the authors found insufficient evidence to recommend the use of certain preventive agents, such as cyproheptadine and amitriptyline.
A study by Dr. Kathryn M. Rose found that individuals with migraines or other severe headaches were three times more likely to report chest pain compared to those without such conditions. However, the study did not find a significant association between headaches and coronary heart disease.
Biomedical technologies aim to improve appearance, emotions, and overall well-being through enhancements. However, experts Arthur Caplan and Carl Elliott debate the ethics of these technologies, citing potential side effects and societal consequences.
Researchers analyzed data from Iceland's National Cancer Registry and deCODE genetics database to investigate cancer risk in families. The study found that for 16 out of 27 cancers studied, relatives of patients were at a significantly higher risk of developing the same type of cancer. Lifestyle factors like smoking and diet also contr...
A decentralized, Web-based, community-wide effort called the Tropical Diseases Initiative (TDI) proposes an open-source approach to discovering new drugs for neglected diseases. By adopting this model, scientists from laboratories, universities, and corporations can work together to develop affordable treatments for tropical diseases s...
A new study suggests that MDCT angiography can determine which patients with narrowed carotid arteries are at greater risk of having a stroke. Patients with calcified plaques were found to be 21 times less likely to have had symptoms than those with noncalcified plaques.
A new study links higher MBL protein levels to reduced risk of heart attack, particularly in individuals with diabetes. The protein's role in clearing oxidized cholesterol from arteries may be a key factor.
A study of 295 older men found that those who maintained daily physical activity had less cognitive decline than those who reduced or stopped activity. Physical activities of medium-to-low intensity, such as walking three miles per day, were associated with the least cognitive decline.