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Science News Archive December 2000 - Page 4


Page 4 of 6

Bad marriages exacerbate high blood pressure

A study published in Archives of Internal Medicine found that unhappy marriages increase blood pressure in people with mild hypertension, while good marriages are protective. Participants who experienced marital discord had a statistically significant thickening of the heart's left ventricle after three years.

SourceUniversity of Toronto·JournalArchives of Internal Medicine·DateDec 13, 2000

I love you, but you're making me sick

A new study found that people in unhappy relationships with mild high blood pressure experience sustained increases in blood pressure, while those in loving relationships show a decrease. The research suggests that marital distress may be a significant factor in raising blood pressure in vulnerable individuals.

SourceHeart and Stroke Foundation of Ontario·JournalArchives of Internal Medicine·DateDec 12, 2000

Neptune's ears

Researchers aim to understand how sonar affects marine creatures by creating a sea sound simulator. The ESME project will analyze data from various organizations and develop mathematical models to predict environmental effects of different sonar types.

First plant genome completed

A team of scientists has successfully completed the sequencing of the Arabidopsis thaliana genome, paving the way for accelerated research in plant biology. The comprehensive analysis provides valuable insights into gene annotation, functional categories, chromosomal architecture, and transposable elements.

Tissue proteolysis and male infertility

The targeted disruption of the PCI gene in mice leads to profound defects in sperm development and fertility. Human male infertility is also associated with a lack of PCI in seminal fluid, disrupting the balance of proteinases and proteinase inhibitors.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateDec 12, 2000

British men favour beer and fast food diet

A study of British adults found that most men follow a beer and fast food diet, while women prefer the traditional British diet. The research also revealed significant regional and socioeconomic differences in dietary patterns, with those on low incomes and smokers consuming less healthy diets.

SourceBMJ Specialty Journals·JournalJournal of Epidemiology and Community Health·DateDec 12, 2000

Takin' care of business - the Navy way

The Navy's BMP program has significantly reduced disparities in quality, cost, and reliability of acquired goods and services. More than 120 surveys have been conducted, 5,000 best practices documented, and an Internet site established to share knowledge and expertise with the business community.

Nanonurses

Researchers at Cornell University have successfully demonstrated hybrid nanodevices that can administer drugs and treatments using biomolecules and tiny nickel propellers. The devices are powered by ATP and can be assembled, maintained, and repaired using life's physiology.

SourceOffice of Naval Research·JournalScience·DateDec 12, 2000

Researchers sequence first plant genome

The team sequenced the genome of Arabidopsis thaliana, a flowering mustard, enabling scientists to study genes controlling basic plant functions. The knowledge gained will aid in improving crops like wheat, corn, and soybeans, as well as identifying genes in the human sequence.

SourceWashU Medicine·JournalNature·DateDec 12, 2000

Elephant seals - looking good

Scientists have developed a unique way to study elephant seals using tiny sensing devices attached to their coats. These devices provide valuable information on sea temperatures and pressure, even at depths not normally reached by research ships or satellite sensing.

Extended drug therapy and pneumatic compression key to avoiding blood clots after hip replacement surgery

A study found that pneumatic compression and extended anticoagulant drug therapy lower the risk of developing symptomatic blood clots after hip replacement surgery, with overweight patients most at risk. Pneumatic compression was effective in normal-weight patients, while warfarin therapy benefited all patients.

SourceUniversity of California - Davis Health·JournalNew England Journal of Medicine·DateDec 12, 2000

Blocking enzyme imprisons malaria parasites

Researchers found a way to prevent infectious malaria particles from bursting out of their protective sacs by blocking the activity of a protein-snipping enzyme called protease. This discovery suggests that protease inhibitors could be used to treat malaria infection and keep the infectious particles imprisoned until they deteriorate.

SourceHoward Hughes Medical Institute·JournalProceedings of the National Academy of Sciences·DateDec 11, 2000

HIV research takes promising new direction

Researchers have discovered a new family of anti-viral compounds, guanidinoglycosides, that target the genetic structure of HIV essential to its replication. These compounds aim to prevent HIV from forming and spreading throughout the body by targeting the 'Rev' protein responsible for producing and spreading infected cells.

Lifting the pressure on holiday party perfectionists

Perfectionists experience anxiety and depression when minor hassles pile up during the holidays. To mitigate this, Blankstein suggests planning ahead, involving others in tasks, and accepting help from loved ones. His study based on 443 university students provides valuable insights into perfectionism's impact on mental health.

SourceUniversity of Toronto·JournalJournal of Counseling Psychology·DateDec 11, 2000

Difficult mood disorder successfully treated

A large-scale study has found lamotrigine to be safe and effective in preventing episodes of mood swings in patients with rapid-cycling bipolar disorder. The study, published in Journal of Clinical Psychiatry, showed that 41% of patients who received lamotrigine remained stable without relapse for six months, compared to 26% on placebo.

SourceUniversity Hospitals of Cleveland·JournalJournal of Clinical Psychiatry·DateDec 11, 2000

Scientists discover new stage in malarial infection

Researchers identified a two-step process by which malaria parasites break out of red blood cells, paving the way for developing clinically useful inhibitors. The discovery may lead to promising targets for drug development and improved understanding of the disease.

SourceWashU Medicine·JournalProceedings of the National Academy of Sciences·DateDec 10, 2000

MRI-guided catheter ablation

Researchers developed a new MRI-guided catheter ablation technique to treat arrhythmia, reducing radiation exposure and improving procedure accuracy. The novel method uses MRI to guide radio frequency energy, creating precise lesions that block abnormal electrical pathways in heart muscle.