Researchers used new techniques to study HDL particles, verifying the lipid bilayer structure and confirming a key finding about protein orientation. The study resolves a long-standing controversy over the structure of HDL, shedding light on its role in cardiovascular health.
The AAPS International Workshop on Individual Bioequivalence aims to review available criteria, discuss their pros and cons, and explore various points in drug development and approval. The workshop will focus on evidence for/against a Subject by Formulation interaction, statistical issues, and FDA strategy.
Researchers at UT Southwestern Medical Center have discovered a nuclear receptor, FXR, that controls bile acids and cholesterol production. The finding has important implications for developing drugs to control dietary cholesterol in humans.
Researchers have created living nerve cell colonies on silicon chips that can be used to study the brain's functions and potentially develop new prosthetic devices. The colonies, grown from rat hippocampal neurons, can live for extended periods and communicate with each other through a matrix of electrodes.
Researchers at UT Southwestern Medical Center have developed a novel method to turn off genes involved in telomerase activation, which enables continuous cell division in cancer cells. The study used peptide nucleic acid (PNA) molecules to block telomerase activity, showing significant promise for developing new cancer drugs.
Researchers find that while smoking may lower risk of pre-eclampsia and uterine cancer, it can lead to reproductive problems such as miscarriage and infertility. Stopping smoking during pregnancy is advised, with nicotine alternatives like gum recommended to minimize harm.
A new report reveals that many heroin overdose deaths can be prevented with prompt medical attention and treatment. The study highlights the effectiveness of methadone maintenance programs in reducing overdose-related deaths. By increasing access to these programs, the US can combat its heroin epidemic.
Researchers have identified a receptor protein in rodents and humans that can detect temperatures above 120 degrees Fahrenheit, expanding the range of temperatures for which nerve receptors are known. The discovery holds promise for better understanding pain and developing drugs to block pain.
Scientists discovered that p-glycoprotein and a similar protein collaborate to limit drug traffic through the brain. This finding could lead to improved treatment of diseases like AIDS, depression, cancer, and more.
Researchers reveal that the Type III TGF-beta receptor plays a crucial role in transforming heart cells and forming valves, providing new insights into congenital heart defects. The discovery could lead to improved treatments for children with heart defects.
Researchers have successfully tested a new gene therapy approach to block certain pain responses in mice. The treatment uses a herpes virus containing a gene that triggers production of a pain-blocking protein, providing long-term potential for pain relief.
Scientists at Oregon Health & Science University have identified a key brain peptide, orphanin, that regulates the body's inner clock and controls the circadian rhythm. The discovery opens new avenues for understanding sleep disorders and natural light cycles.
A study suggests that an imbalance in genes expressed on the X chromosome may lead to ovarian cancer development. The research found nonrandom X-chromosome inactivation in over 50% of women with invasive ovarian cancer, particularly those with BRCA1 mutations.
A low-protein diet can safely delay dialysis treatment for up to a year in patients with severe chronic renal failure. The diet, rich in fruits and vegetables, provides essential nutrients without side effects.
Researchers at Vanderbilt University Medical Center discovered that mice lacking the EP2 receptor exhibit salt-sensitive hypertension and reduced fertility. The study found that PGE2 excretion increased in response to high salt diets, leading to unmasked constrictor receptors and development of hypertension.
The Institute for Coffee Studies will investigate the effects of coffee on the brain, depression, and alcohol dependency. Researchers aim to identify potential medicinal compounds in coffee that could benefit human health, with a focus on chlorogenic acids and their impact on neurotransmitter systems.
Dr. Craig Stevens, a leading pain researcher, has developed an alternative model using northern grass frogs to investigate the effects of morphine and other opioid drugs on humans. His research shows significant similarities between amphibians and mammals in terms of pain response.
Researchers found that COX-2 inhibitors suppress prostacyclin, a hormone-like substance produced in blood vessels, which can lead to increased thrombosis risk. This discovery raises concerns about the potential cardiovascular risks of these new pain relievers.
A new study reveals that alpha V beta 5-integrins on cell surfaces facilitate the entry of genetically engineered AAV viruses into cells, allowing for efficient gene delivery. This understanding can lead to improved gene therapy methods and enhanced chances of successful treatment outcomes.
The National Institute on Alcoholism and Alcohol Abuse has awarded a $7 million grant to Wake Forest University Baptist Medical Center to study the causes of alcohol addiction. The studies will provide insights into brain processes that lead to alcoholism, with a focus on understanding the fundamental actions of alcohol on the brain.
Researchers at Thomas Jefferson University found latent HIV in the semen of seven infected men taking HAART, which may be transmissible. The study suggests that even if detectable virus is not present in blood, individuals should practice safe sex to prevent transmission.
Researchers discovered that green tea's EGCg compound inhibits an enzyme required for cancer cell growth and can kill cultured cancer cells. Drinking more than four cups of green tea a day may provide enough of the active compound to slow and prevent cancer cell growth.
A new study from Northwestern University found that Evista (raloxifene) significantly reduces the risk of invasive breast cancer in postmenopausal women, with a 63% decrease in newly diagnosed cases. The medication has also been shown to lower cholesterol and protect against bone loss and osteoporosis-related fractures.
Free-radical activity was found to be roughly doubled in the frontal and temporal lobes of brains of people who died of Alzheimer's disease. The levels of two biochemical markers of free-radical tissue damage were also elevated in these areas, which are critical for memory and intellectual function.
University of North Carolina researchers have successfully used an antibiotic-like compound to externally regulate a gene implanted in the brain using AAV technology. This breakthrough suggests that gene therapy may eventually be feasible for human brain disorders such as Parkinson's disease and epilepsy.
Researchers at Jefferson Medical College successfully used a gene repair technique to change the color of white albino mice cells to black, restoring melanin production and correcting a genetic mutation. The breakthrough holds promise as a potential treatment for some hereditary diseases by correcting the underlying genetic defect.
Using nebulizers to deliver glucocorticoid medication is effective in treating asthma in children, but long-term use can suppress growth, recommends Dr. Stanley J. Szefler of National Jewish Health. A new study suggests caution when prescribing glucocorticoids for children under 5 years old.
A study by Jane E. Freedman found that purple grape juice inhibits platelet aggregation, reducing blood clotting risk and improving cardiovascular health. The flavonoid quercetin was also shown to have antioxidant properties, preventing the inactivation of nitric oxide.
Researchers found that the thalamus, a key brain region, can remodel its connections after sensory nerves are severed, potentially leading to recovery of function after stroke or nervous system damage. The discovery sheds light on the brain's ability to reorganize and challenges scientific dogma that it is fixed after infancy.
The University of Pittsburgh has been chosen as one of three pioneer sites for biocombinatorial chemistry research, a revolutionary approach to speed up drug discovery. Researchers will create novel chemical compounds and test them in specific assays to learn whether they can interrupt cellular activities that lead to cancer.
Researchers discovered that trace amounts of nicotine can raise blood pressure in an animal model by releasing the neurotransmitter lutenizing hormone-releasing hormone (LHRH). The study suggests that even small doses of nicotine may cause short-term high blood pressure and potentially hypertension in humans.
Researchers at the University of Pennsylvania School of Medicine have found that vitamin E confers potent protection from atherosclerosis in genetically modified mice. The study demonstrates that free radicals play a central role in heart disease, and the antioxidant action of vitamin E significantly reduces atherosclerotic damage.
The UW Medical School team determined the three-dimensional molecular structure of a key enzyme responsible for activating many cell functions. This breakthrough is crucial in developing drugs that can control unchecked cell growth leading to cancer.
Researchers have identified hyperforin as the primary active ingredient in St. John's Wort, leading to significant improvements in mood and cognitive function. Studies have shown that high concentrations of hyperforin produce greater brain wave activity and enhanced neurotransmitter release.
Researchers found that calcium influx into mitochondria triggers neuron death, while changes in cytoplasmic calcium have a more subtle effect on cell health. The study suggests designing drugs to target mitochondria could prevent or intervene in glutamate-induced neuronal damage.
Researchers found that the fen-phen diet drug combination was potentially toxic due to the destruction of serotonin control in blood plasma. This could lead to primary pulmonary hypertension and heart valve lesions in some users. The study highlights the importance of complete and up-to-date drug labels.
Researchers at UCSF have discovered a new molecular mechanism that activates platelets, leading to clot formation. The discovery of protease-activated receptor 4 (PAR4) may lead to new approaches for developing drugs to prevent heart attacks and strokes.
A study by researchers at the University of Pennsylvania School of Medicine has discovered that programmed cell death in the brain continues for weeks after initial trauma. This finding could lead to better treatments for brain injuries and related conditions such as stroke, spinal cord injury, and neurodegenerative diseases.
Scientists have found that a marine snail venom extracts can prevent serotonin from acting on a specific receptor in African toad eggs, which is also found in the human brain. This discovery could provide insight into regulating nerve cell behavior and designing new drugs to control serotonin's actions.
The UT Southwestern pediatric laboratory now has a Time-of-Flight mass spectrometer, allowing for local analysis of chemotherapeutic drugs and other substances. This technology aids in identifying molecular minutiae, potentially resolving side effects such as fatigue and cognitive problems associated with chemotherapy.
Researchers discovered lithium's dual anti-manic/anti-depressive effect by finding it stabilizes glutamate levels in mice brains, bringing them within a stable zone. This results in controlling both extremes of mania and depression in bipolar disorder patients.
Researchers at Oregon Health & Science University have found that treatment with sodium thiosulfate significantly reduces hearing loss in brain tumor patients receiving carboplatin chemotherapy. This breakthrough could help combat the hearing loss associated with platinum-based chemotherapy treatment for other types of cancer.
Researchers found that an enzyme called kinase IV is regulated by another enzyme called phosphatase 2A, which attaches to it and quickly shuts it down. This discovery provides insight into how cells control their activities and offers potential for developing targeted drugs to kill cancer cells or bacteria.
Dr. Masashi Yanagisawa discovered endothelin, a hormone that controls blood vessel tone and plays a crucial role in cardiovascular function. This breakthrough has sparked further research into developing drugs to block its action and is now being tested in clinical trials.
A study published in Nature found that people with a genetic defect that reduces nicotine metabolism are less likely to become smokers and smoke fewer cigarettes. The defect is present in 20% of non-smokers, compared to 10% of smokers.
Researchers found that blocking beta-adrenergic receptor kinase (BARK) can prevent heart failure in mice genetically engineered to develop the disease. The study suggests a fundamental abnormality in the beta-adrenergic receptor system is at the root of causing heart failure.
A Duke University Medical Center pharmacologist finds that maternal smoking causes massive numbers of crib deaths and severe neurological problems in
Scientists identify a common gene family responsible for generating rhythmic electrical impulses in both the brain and heart. This discovery could lead to the development of screening tests and therapeutic applications for cardiac and neurological disorders.
Scientists have discovered a novel form of vancomycin that may be effective against resistant bacteria. The findings suggest a new way for the drug to bind to bacteria, opening an avenue for developing next-generation antibiotics.
Researchers at Washington University School of Medicine have shown that a compound called BAF protects newborn rats from brain damage. The findings suggest that administering BAF after the damaging procedure is just as effective as giving it ahead of time, and that it also protects when injected systemically.
Researchers have generated mice with human apoE3 or apoE4 genes, showing that apoE3 promotes nerve cell outgrowth while apoE4 does not. This study provides new insights into the biological effects of apoE variants and may offer a common mechanism for their adverse effects on neurodegenerative diseases.
Researchers discovered a possible link between elevated blood homocysteine levels and Alzheimer's disease, with lower folate and vitamin B12 levels also observed. Long-term clinical trials are needed to determine if lowering homocysteine levels can prevent or delay the progression of the disease.
Scientists at UNC Chapel Hill and Bern University have developed a new RNA repair technique to block defective processing in cells' messenger RNAs. This method has shown promising results in increasing healthy protein production and could potentially treat or even cure beta thalassemia.
Researchers at Jefferson Medical College have found a way to inhibit the hepatitis B virus by blocking its envelope creation, resulting in a dramatic drop in viral levels. The discovery may provide new leads for treating chronic HBV and HCV infections in humans.
Fetal cells may be linked to an immune system reaction in women with systemic sclerosis, a form of scleroderma. The study found that 46% of women with the condition had male DNA in their blood and skin biopsies.
The National Institute of General Medical Sciences (NIGMS) has awarded $2 million to support 20 grants from the first round of applications. The grants focus on high-impact, high-risk research studies in areas such as cell biology, biophysics, and pharmacology.
Researchers found that when H. pylori attaches to stomach cells with a specific molecule called Leb, it triggers an immune response that can lead to ulcers, inflammation, and increased risk of stomach cancer. The study provides a genetically well-defined model for studying bacterial attachment and its role in disease.
Researchers have developed a new test to measure corrosive free-radical activity in individuals, providing insight into antioxidant effectiveness. The test uses an isoprostane marker, IPF2alpha-I, which can be detected in urine, and has been validated through cross-validation with an older assay.
Scientists at Duke University discovered a genetic switch that governs prostate cancer progression. The switch controls the production of FGF-R2 receptors, which can lead to
A study found that individuals taking nisoldipine had a higher rate of fatal and non-fatal heart attacks compared to those taking enalapril, sparking concerns about the safety of calcium antagonists for certain populations. The American Heart Association advises against panic and emphasizes the need for consultation with physicians.