Category Archives: Health

Hyperactivity in Brain May Explain Multiple Symptoms of Depression

*Electrical signals can’t shut off, suggest UCLA researchers*

Most of us know what it means when it’s said that someone is depressed. But commonly, true clinical depression brings with it a number of other symptoms. These can include anxiety, poor attention and concentration, memory issues, and sleep disturbances.

Traditionally, depression researchers have sought to identify the individual brain areas responsible for causing these symptoms. But the combination of so many symptoms suggested to UCLA researchers that the multiple symptoms of depression may be linked to a malfunction involving brain networks — the connections that link different brain regions.   (more…)

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Project Aims To Improve HIV/AIDS Prevention Materials For African-American Women

African-American women make up a disproportionate number of HIV/AIDS cases in the United States. Researchers from North Carolina State University are trying to change that, leading a National Science Foundation project aimed at developing HIV/AIDS prevention materials that resonate with African-American female college students.

African-Americans represent approximately 14 percent of the U.S. population, but accounted for an estimated 44 percent of new HIV infections in 2009. The estimated rate of new HIV infections among African-American women was 15 times that of white women and over three times that of Latina women. (more…)

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How Good Cholesterol Turns Bad

Berkeley Lab Researchers Find New Evidence on How Cholesterol Gets Moved from HDLs to LDLs

Researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) have found new evidence to explain how cholesteryl ester transfer protein (CETP) mediates the transfer of cholesterol from “good” high density lipoproteins (HDLs) to “bad” low density lipoproteins (LDLs). These findings point the way to the design of safer, more effective next generation CETP inhibitors that could help prevent the development of heart disease. (more…)

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In The Mouth, Smoking Zaps Healthy Bacteria, Welcomes Pathogens

COLUMBUS, Ohio — According to a new study, smoking causes the body to turn against its own helpful bacteria, leaving smokers more vulnerable to disease.

Despite the daily disturbance of brushing and flossing, the mouth of a healthy person contains a stable ecosystem of healthy bacteria. New research shows that the mouth of a smoker is a much more chaotic, diverse ecosystem—and is much more susceptible to invasion by harmful bacteria. (more…)

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Radiation Generates Cancer Stem Cells From Less Aggressive Breast Cancer Cells

Breast cancer stem cells, thought to be the sole source of tumor recurrence, are known to be resistant to radiation therapy and don’t respond well to chemotherapy.

Now, researchers with the UCLA Department of Radiation Oncology at UCLA’s Jonsson Comprehensive Cancer Center report for the first time that radiation treatment, despite killing half of all tumor cells during every treatment, transforms other cancer cells into treatment-resistant breast cancer stem cells. (more…)

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