Tag Archives: Biology-General

Circadian rhythm chaos: a new breast cancer marker.

Posted on 2011/03/08 by Leslie Carol Botha

PubMed.gov Int J Fertil Womens Med. 2001 Sep-Oct;46(5):238-47. Keith LG, Oleszczuk JJ, Laguens M. Department of Obstetrics and Gynecology, Northwestern University Medical School, Chicago, Illinois, USA. Abstract The most disappointing aspect of breast cancer treatment as a public health issue … Continue reading →

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You Are Controlled By Circadian ‘Believe It or Not’

Posted on 2010/11/25 by Leslie Carol Botha

Creative Health Blog Health Education At Creative Health Institute It is now known that the molecular circadian clock can function within a single cell. At the same time, different cells may communicate with each other resulting in a synchronised output … Continue reading →

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Get Some Sleep: When shift work disrupts your rest

Posted on 2010/11/24 by Leslie Carol Botha

CNN Health November 23, 2010 An estimated 20 percent of the American workforce does some type of shift work. This doesn’t have to mean working the graveyard shift.  It can mean any work done between 7 p.m. and 7 a.m. … Continue reading →

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Transbiology

Posted on 2010/10/26 by Leslie Carol Botha

911weknow.com What do the next few years hold?  DARPA (the research department of the military) is about to sink millions into a program called BioDesign, aiming to eliminate “the randomness of natural evolutionary advancement.” Look at that again and think.  … Continue reading →

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Light At Night Linked To Weight Gain Perhaps Due To Shift In Eating Times

Posted on 2010/10/13 by Leslie Carol Botha

Medical News Today October 11, 2010 Researchers from Israel and the USA believe they have found evidence that demonstrates a link between obesity and metabolic disorders and exposure to LAN (light at night) in animal studies. In an article published … Continue reading →

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Tick Tock: Rods Help Set Internal Clocks, Johns Hopkins Biologist Says

Posted on 2010/09/24 by Leslie Carol Botha

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BALTIMORE, Sept. 16 (AScribe Newswire) — We run our modern lives largely by the clock, from the alarms that startle us out of our slumbers and herald each new workday to the watches and clocks that remind us when it’s time for meals, after-school pick-up and the like.

In addition to those ubiquitous timekeepers, though, we have internal “clocks” that are part of our biological machinery and which help set our circadian rhythms, regulating everything from our sleep-wake cycles to our appetites and hormone levels. Light coming into our brains via our eyes set those clocks, though no one is sure exactly how this happens. Continue reading →

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Photoperiodic diapause under the control of circadian clock genes in an insect

Posted on 2010/09/04 by Leslie Carol Botha

7th Space

Most organisms have evolved a circadian clock in order to anticipate daily environmental changes and many of these organisms are also capable of sophisticated measurement of daylength (photoperiodism) that is used to regulate seasonal events such as diapause, migration and polymorphism. It has been generally accepted that the same elements are involved in both circadian (daily) and seasonal (annual) rhythms because both rely upon daily light-dark cycles.

However, as reasonable as this sounds, there remains no conclusive evidence of such a molecular machinery in insects. We have approached this issue by using RNA interference (RNAi) in Riptortus pedestris. Continue reading →

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Women’s cholesterol levels vary with phase of menstrual cycle

Posted on 2010/08/11 by Leslie Carol Botha

NIH News
National Institutes of Health
August 10, 2010
NIH findings suggest a need to consider phase of cycle when measuring cholesterol

National Institutes of Health researchers have shown that women’s cholesterol levels correspond with monthly changes in estrogen levels. This natural variation, they suggest, might indicate a need to take into account the phases of a woman’s monthly cycle before evaluating her cholesterol measures Continue reading →

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Menstrual Cycle Affects Hemodynamic Response to Tracheal Intubation

Posted on 2010/08/04 by Leslie Carol Botha

Released: 8/2/2010 11:00 AM EDT
Source: International Anesthesia Research Society (IARS)

Hormone Levels Affect Response to Intubation
Led by Dr. Volkan Hancı of Zonguldak Karaelmas University, Turkey, the researchers designed a study to determine the effect of the menstrual cycle on the hemodynamic response to tracheal intubation in 62 healthy women. Continue reading →

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Effect of the Menstrual Cycle and Hormonal Contraceptives on Human Papillomavirus Detection in Young, Unscreened Women

Posted on 2010/07/30 by Leslie Carol Botha

American College of Obstetrics and Gynecology
July 2010

OBJECTIVE: To estimate the effect of the menstrual cycle
and oral contraceptive pill (OCP) use on the prevalence,
incidence, and persistence of human papillomavirus. Continue reading →

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