Evolution News and Research

RSS

Melanopsin plays a key role in the inner workings of the eye

A Brown University team has found that a protein called melanopsin plays a key role in the inner workings of mysterious, spidery cells in the eye called intrinsically photosensitive retinal ganglion cells, or ipRGCs.

26 Jan 2005

Biochip for detection of inflammatory bowel disease

At the III International Symposium on Advanced Therapy for Chronic Inflammatory Bowel Disease, held in Madrid, the biotechnological company, Progenika, presented a DNA-chip the purpose of which is the optimisation of the diagnosis, prognosis and treatment of patients with inflammatory bowel disease (Crohn’s disease and Ulcerous Colitis).

26 Jan 2005

Theory on evolution of essential genes is overturned

A gene passed on by fathers that plays a vital role in helping fertilised eggs to develop into adults has helped scientists overturn the idea that essential genes have always been part of the genetic makeup of a species.

26 Jan 2005

Evolutionarily ancient enzyme-repair system used to identify type of DNA damage responsible for the onset of skin-tumor development

In a finding that broadens our insight into the cause of certain kinds of UV-induced skin cancer, researchers at Erasmus University Medical Center (Rotterdam, The Netherlands) have employed an evolutionarily ancient enzyme-repair system to identify the principal type of DNA damage responsible for the onset of skin-tumor development.

26 Jan 2005

Researchers have uncovered evidence of sexual reproduction in a single-celled organism long thought to reproduce asexually

The finding by John M. Logsdon, Jr., assistant professor in the UI College of Liberal Arts and Sciences Department of Biological Sciences and the Roy J. Carver Center for Comparative Genomics, and colleagues from the UI and Roanoke College (Virginia), provides the first clear evidence that meiosis arose very early in eukaryotic evolution, bringing science one step closer to understanding the mystery of sexual evolution.

26 Jan 2005

Modern humans have sloppy gene control mechanisms which can make us susceptible to diseases

Our evolutionary ancestors’ lack of choice in the mating game has left modern humans exposed to disease, according to new research published in the journal PLOS Biology today.

25 Jan 2005

Psychiatric disorders detected using blood test

ChondroGene Limited reported today that a paper entitled "Assessing the Validity of Blood- Based Gene Expression Profiles for the Classification of Schizophrenia and Bipolar Disorder: A preliminary Report" is available online on the American Journal of Medical Genetics Part B: Neuropsychiatric Genetics' website.

19 Jan 2005

Missing sequence of the human Y chromosome may contain genes controlling stature and tumor development

Scientists have reported in the journal Genome Research that they have successfully cloned and characterized a previously intractable DNA sequence: a 554-kilobase-pair genomic segment near the centromere of the human Y chromosome. This sequence contains eight putatively active genes that could be implicated in sex-associated height differences and gonadal tumor development.

16 Jan 2005

Book explores impact of viruses on evolution

Although viruses technically may not be alive, their contribution to the dynamic web of life is undeniable. A new book, published by ASM Press, focuses on the role that viruses have played and continue to play in the evolution of life.

12 Jan 2005

What makes an allergen an allergen?

An enduring mystery for allergy researchers has been the unpredictable distribution of allergens in plants. For example, being allergic to birch pollen can predispose a person to allergy from distantly related plant foods such as celery, apple or soy.

12 Jan 2005

Serono announces the availability of Saizen for adult growth hormone deficiency

Serono announced today the availability of Saizen [somatropin (rDNA origin) for injection] for use in the treatment of patients with adult growth hormone deficiency (AGHD), following its FDA approval.

10 Jan 2005

Core promoter mutants of Hepatitis B Virus e Antigen associated with development of fulminant hepatitis and liver cancer

Scientists in Brown Medical School, Providence, USA, have found that core promoter mutants of Hepatitis B Virus e Antigen replicate at up to 10-fold higher levels in transfected human hepatoma cells than the wild-type virus.

9 Jan 2005

Link between fast food, weight gain, and insulin resistance

Researchers have shown a correlation between fast food, weight gain, and insulin resistance in what appears to be the first long-term study on this subject.

3 Jan 2005

Evolution has been working very hard to produce us humans

The genes that regulate brain development and function evolved much more rapidly in humans than in nonhuman primates and other mammals because of natural selection processes unique to the human lineage. Researchers reported their findings in the cover article of the Dec. 29, 2004, issue of the journal Cell.

28 Dec 2004

Somatic hypermutation (SHM) should prove to be extremely useful in directed protein evolution

Fascinated by the efficient way the human immune system generates a rapid response to create a near-infinite variety of antibodies, researchers have "hijacked" that machinery and used it to evolve a new type of fluorescent protein.

23 Dec 2004

Wireless technology does not affect pacemakers and defibrillators

With the dynamic evolution of wireless technology, Mayo Clinic researchers have been concerned about the potential effects of electromagnetic interference on heart pacemakers and implantable cardioverter-defibrillators.

22 Dec 2004

Permanent resistance to antibiotics cannot be prevented

Dutch research has shown that the development of permanent resistance by bacteria and fungi against antibiotics cannot be prevented in the longer-term. The only solution is to reduce the dependence on antibiotics by using these less.

20 Dec 2004

Ethical challenges ahead for neuroscience and society

Are we ready for a future where brain scans invade our private thoughts? Will we have to alter our brains chemically to keep competitive at our jobs? Could science determine that "souls" do not exist, and, if so, what does that mean for how we think of ourselves as human beings?

20 Dec 2004

The regulation of physical activity in young children

The evidence at present suggests that neither better facilities, nor an increase in the amount of time allocated to PE to four hours a week, will improve physical activity levels in children as a whole and thereby impact on the rising tide of obesity.

16 Dec 2004

New theory driving evolutionary changes

Researchers at UT Southwestern Medical Center at Dallas have used canine DNA to identify a genetic mutation mechanism they believe is responsible for rapid evolutionary changes in the physical appearance of many species.

14 Dec 2004