Researchers found that estrogen significantly reduces MMP-9 enzyme activity in male rat aortas, leading to smaller aneurysms and less damage. The study suggests that host environment is the critical factor in aneurysm formation, with male rats more prone to AAA development.
Facial aging is attributed to the loss of facial fat and skin changes, rather than gravitational forces. Plastic surgeons must balance tightening tissue with replacing lost facial fat using wrinkle fillers.
The American Society of Plastic Surgeons (ASPS) is addressing concerns about unethical medical expert witnesses. The society has created a document that calls for expert witnesses to affirm their expertise and provide truthful testimony based on industry standards.
A new hydrogel sealant, made from biocompatible dendritic macromolecules and poly(ethylene glycol), seals corneal incisions more effectively than suturing or self-sealing, preventing infection and trauma.
Researchers at St. Jude Children's Research Hospital developed a gene vector that allows hematopoietic stem cells to produce fetal hemoglobin, reversing beta-thalassemia in mice. The technique uses a new vector with added regulatory elements to improve the expression of the gamma-globin gene.
A study found that diet counseling was provided in less than 45% of visits and exercise counseling in under 30% with patients at risk of heart disease. The lack of counseling is attributed to physicians' perceived lack of training and tools, as well as reimbursement constraints.
The study reveals a highly complex maize genome with approximately 59,000 genes, twice as many as the human genome. This complexity is due to positional instability and genetic history, allowing maize genes to move around the genome in a way not seen in other species.
A new study on smallpox in monkeys reveals how the virus subverts host defenses, providing targets for developing countermeasures to lessen or block disease. This knowledge can speed up development of protective measures against bioterror attacks.
A US policy shift to inactivated poliovirus vaccine (IPV) reduced vaccine-associated paralytic poliomyelitis (VAPP) cases, with no reported cases after 2000. The elimination of VAPP marks an important public health accomplishment, but ongoing high vaccination coverage and surveillance remain crucial.
Researchers suggest genetic factors favoring male homosexuality could increase female fecundity, resolving the Darwinian paradox. This study provides evidence for inherited factors in homosexuality, exploring its implications on population dynamics.
Decreasing length of stay (LOS) for patients receiving inpatient medical rehabilitation has been associated with increased mortality rates, despite improved efficiency and functional status. The study found that LOS decreased by 42% from 1994 to 2001, while mortality rates increased from less than 1% to 4.7% during the same period.
A pilot study dubbed STAND UP! aims to monitor food intake and physical activity in schools to reduce risk factors for type 2 diabetes among sixth-graders. The program's results will be used to improve the intervention before expanding it to middle schools nationwide.
A study by Grant Butterbaugh and colleagues found that adult patients with left temporal lobe epilepsy were more likely to experience learning disabilities. The researchers suggest that medically treated but uncontrolled seizures in the language-dominant side of the brain may contribute to these findings.
Researchers found complete pain relief in 76% of patients treated with low-dose ketamine infusions, with some experiencing relief lasting over three years. The study's findings suggest a novel approach to treating complex regional pain syndrome (CRPS).
A review of 136 studies found bariatric surgery to be effective in achieving significant weight loss, with an average percentage of excess weight loss of 61.2%. The procedure also showed promise in resolving or improving four obesity-related disorders: diabetes, hyperlipidemia, hypertension, and obstructive sleep apnea.
Researchers at Purdue University developed a method to trace documents to specific printers, enabling law enforcement to investigate counterfeiting and homeland security matters. The technique uses unique printer characteristics and embedded features to identify the printer used to create documents.
A team of biomedical engineers is using $11.5 million grant from the National Institutes of Health to understand how mechanical forces govern white blood cells' behavior. The research aims to develop new treatments for diseases caused by inappropriate immune responses, such as diabetes and heart disease.
Researchers found that Alpha-4Beta-1 is activated by CD47, causing sickle red blood cells to stick to blood vessel walls. This discovery may lead to new therapies for sickle cell disease and other anemias.
A recent study suggests that climate warming in the arctic tundra may cause the release of more carbon dioxide into the atmosphere than previously expected. The research, led by Michelle Mack and Edward Schuur, found that increased nitrogen levels accelerated the breakdown of soil organic matter, leading to a net loss of carbon.
Researchers developed an image translation system to bridge the gap between advanced diagnostic techniques and radiation treatment planning systems. The system facilitates biological optimization planning, using information about cancer cell location and density to deliver escalated doses of radiation.
A study by Ann H. Partridge et al highlights the need for better patient-physician communication about fertility in young breast cancer patients. Fifty-seven percent of patients reported being very concerned about becoming infertile, with 29% influencing their treatment decisions.
Researchers analyzed VAERS data for adverse events following pneumococcal conjugate vaccine (PCV) vaccination in children. The study found that 13.2 reports of events were submitted per 100,000 doses distributed.
Patients' travel distances for angioplasty care remain largely unchanged even if they're directed to high-volume hospitals meeting minimum procedure standards. Most patients with longer travel distances only face minimal increases, typically up to 25 miles.
A recent study published in Epilepsia found that selective amygdalohippocampectomy (SAH) surgery can lead to verbal memory loss in patients, especially those who underwent left temporal lobe surgery. The study revealed that 30% to 50% of patients who underwent SAH on the left side showed no recovery of verbal memory after 12 months.
A multi-center randomized controlled study found that 45 minutes of weekly self-treatment with RESPeRATE significantly reduces systolic blood pressure, with greater reductions in medicated and non-medicated patients. The device's effectiveness was correlated with slow breathing time, making it easy to use at home.
Researchers discovered mitochondria can fuse without additional proteins, revealing new insights into the aging process and potential treatments for age-related diseases. This understanding is crucial for developing new therapies for optic atrophy, Charcot-Marie-Tooth disease, and neurodegenerative disorders.
Research by FSU scientist Cathy Levenson reveals that dietary iron imbalances trigger a chain of cellular events increasing the risk of developing Parkinson's disease. Excessive iron levels precipitate symptoms in healthy mice, while low levels delay onset and slow disease progression in those already infected.