A new treatment approach blocks liver tumor angiogenesis by manipulating the Tie2 receptor. In mice with colon cancer metastasis to the liver, this approach shrinks tumors and extends survival. The mean survival time increased significantly compared to control mice and endostatin-treated mice.
A new theory on aging, proposed by Ronald D. Lee, suggests that natural selection favors animals capable of devoting energy to insure survival of the next generation. This theory attempts to fill in gaps of previous ideas on aging and its relationship with nurturing behavior.
Researchers used RNA interference to impair cancer cells' ability to produce telomerase, resulting in a 85% shortening of telomeres over 75 days. The technique reduces but doesn't fully block telomerase production, paving the way for potential therapy against most cancers.
A study found that only 10% of sore throat cases are caused by bacteria, making antibiotic treatment without diagnosis ineffective. The traditional culture method was the most effective and least expensive way to diagnose strep throat, despite its limitations.
Women who developed Alzheimer's disease between ages 79 and 88 were significantly more likely to have been overweight at age 70. A moderate, healthy weight seems to be best according to the study.
A large-scale study will test three weight-maintenance strategies: self-directed/usual care, personal contact, and interactive technology. Participants who lose 9 or more pounds in the initial phase will be eligible to enroll in phase II.
Atrium Health Wake Forest Baptist has received a five-year federal grant to develop a model tobacco intervention curriculum, covering smoking and smokeless tobacco use. The program aims to integrate the curriculum into all four years of medical school curricula and will incorporate culturally sensitive strategies.
Pediatricians are urging parents to limit their child's exposure to smoking in movies to reduce the chances of starting to smoke and drink. Research suggests that adolescents see thousands of depictions of smoking by movie stars, influencing their attitude and behavior.
CYC202 demonstrates significant cancer cell death, with 54% of patients testing positive for apoptosis following single agent treatment. Seven patients experienced long-lasting tumour stabilisation in Phase I trials, showcasing potential for selective treatment based on genetic profiles.
A randomized pilot study found that alternating two triple-drug regimens every three months significantly reduced drug failure and kept the viral load suppressed. However, a cost-effectiveness study identified four strategies to determine if a sore throat is caused by bacterial infection, reducing inappropriate antibiotic use.
A study found a strong correlation between genetic polymorphisms in two genes and lung cancer risk in smokers. Mutations in both XPD and cyclin D1 (CCND1) occurred more often in lung cancer patients, increasing the risk of lung cancer among individuals with a smoking history.
A study has identified three chromosomal regions that appear to hold genes affecting low response to alcohol. This research may lead to a better understanding of how genes contribute to alcohol dependence and help develop new treatments.
Scientists at Duke University Medical Center discovered that age-related stem cell loss prevents artery repair and leads to atherosclerosis. The researchers found that bone marrow-derived vascular progenitor cells play a critical role in determining the onset and progression of atherosclerosis.
A new study reveals that Katie Couric's on-air colonoscopy led to a significant increase in colon cancer screenings nationwide. Colonoscopy rates jumped over 20% in the days and months following Couric's test, sustained for nearly a year. The 'Katie Couric Effect' also showed an increase in screenings among women and people under age 50.
Researchers Jody O'Sullivan and Pierre Moulin have developed a theory that sets fundamental limits on the amount of information that can be reliably hidden in various data types. This breakthrough has significant implications for security applications, including detecting forgery and intercepting terrorist messages.
A Penn State sociologist analyzed five NBC sitcoms from 1997-98, finding a high rate of gender harassment and a lower but still troubling rate of sexual harassment. The researcher argues that these incidents perpetuate a hostile work environment and minimize the seriousness of sexual harassment.
Researchers have developed molecular markers that can predict radiation-induced late toxicity and disease recurrence in prostate cancer. The study used apoptosis assays to evaluate cell death induced by radiation, revealing correlations between lymphocyte apoptosis and toxicities.
A study published in Molecular Psychiatry has identified a sex-specific gene variant associated with an increased risk of developing severe depression in women. Over 80% of women who inherited the CREB1 variant developed depressive disorders, highlighting the importance of considering sex-specific factors in depression research.
Researchers at Johns Hopkins Medicine found that focusing on step-by-step goals for patients during daily rounds improves patient safety and satisfaction. The study involved 112 patients in the ICU and showed a significant decrease in hospital stays and an increase in staff understanding of recovery goals.
Researchers at the University of Wisconsin-Madison have identified a gene that protects potatoes from late blight, a fungal pathogen responsible for the Irish potato famine. The discovery holds significant potential to save farmers hundreds of millions of dollars and benefit the environment by reducing toxic chemical applications.
Research identifies factors increasing risk of psychosocial problems among disabled children, including learning and communication difficulties, family stress, and mothers' mental health. The study analyzed data from over 3,300 children aged 6-17 with disabilities, finding that 11% experienced psychosocial issues.
Researchers have developed novel compounds that significantly improve anti-cancer therapy outcomes. The AvastinTM clinical trial shows that bevacizumab, an anti-angiogenesis agent, can slow or stop tumor growth and increase patient survival when combined with chemotherapy.
Researchers have discovered that brain stem cells can be transplanted without being rejected by the immune system, thanks to their unique properties. This breakthrough could lead to new treatments for eye diseases such as blindness.
New lab results show no recombination of porcine and human retroviruses, reducing the risk of PERV transmission to humans. This finding supports Immerge's progress toward clinical xenotransplantation research.
A study by Andrew Steptoe and colleagues found that lower-level civil servants showed higher biological stress responses, including heart rate and cortisol levels, compared to their high-status counterparts. The study suggests that the experience of lower social status may trigger these responses.
Researchers used satellite data and a computer model to study ozone formation, finding that lightning strikes in tropical Atlantic may be a major contributor. The study combined data from multiple NASA satellites and a Canadian computer model to make the surprising discovery.
The updated Guidelines provide practitioners with a list of suggested combination regimens for the initiation of antiretroviral therapy, taking into consideration factors such as potency, toxicities, and dosing frequency. The revised document aims to simplify the process of selecting an effective treatment regimen for HIV/AIDS patients.
A study found that Alzheimer's disease alters a protein called calbindin in brain cells, leading to cognitive deficits. Calbindin levels in granule cells were strongly correlated with cognitive decline in genetically engineered mice and human patients.
Long-term, heavy smoking significantly increases prostate cancer risk in middle-aged men, with double the risk of aggressive forms. Current smokers also face a 40% higher risk compared to nonsmokers.
A recent study found that women with higher plasma cysteine levels had a significantly reduced risk of developing breast cancer. The association was strongest among leaner women, suggesting potential chemopreventive benefits against breast cancer.
Scientists found that the biological clock in mice and rats responds to temperature changes rather than light signals. This discovery has significant implications for understanding jet lag and could lead to new treatments for related conditions.
A study found that doctors and mental-health professionals often fail to address alcohol consumption during visits, even when patients have multiple health or social problems. This missed opportunity can lead to inadequate treatment referrals and counseling.
Pilots who used nicotine gum or donepezil performed better in flight simulator tasks than control groups, while those who consumed alcohol showed impaired skills. The study suggests that nicotine and donepezil may help pilots cope with long flights without cigarettes.
Researchers at the University of Wisconsin-Madison have discovered a mechanism that determines early blood cell fate by interacting with two related proteins, GATA-2 and GATA-1. This finding may help hematologists treat patients with severe cancer or blood disorders by expanding HSC numbers.
Researchers found significant genetic differentiation among Anolis lizard populations on Caribbean islands, revealing unexpected dimensions of biodiversity. The study suggests that multiple species may be present within a single island's ecosystem, and factors such as geography and ecology could be driving the DNA evolution.
UT Southwestern researchers have defined sites in human genes most prone to mutation, which could lead to discovery of genetic bases of many human diseases. The study identified distinctive DNA sequence patterns and rules for predicting mutations.
A study published in Alcoholism: Clinical & Experimental Research found that middle-aged and older alcoholics are at greater risk for suicide than young alcoholic adults. The researchers also discovered an association between increased age, mood disorders, and medically serious suicide attempts.
A Phase III trial found that pemetrexed and cisplatin significantly improved one-year survival rates for mesothelioma patients to 56.5%, compared to 41.9% for those receiving only cisplatin.
Research finds a direct relationship between puffins' breeding success and temperature, with warm waters hindering their ability to catch fish and abandon chicks. The study warns of potential extinctions if warming continues or increases in frequency.