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DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).

PAMAM G-3 actually prevents activation of the process that leads to thrombosis

A compound that mops up debris of damaged cells from the bloodstream may be the first in a new class of drugs designed to address one of medicine's most difficult challenges -- stopping the formation of blood clots without triggering equally threatening bleeding.

24 Jul 2012

Scientists demonstrate link between cancer and faulty differentiation of stem cells

Stem cells hold great promise for the medicine of the future, but they can also be a cause of disease. When these self-renewing, unspecialized cells fail to differentiate into diverse cell types, they can start dividing uncontrollably, leading to cancer. Already several decades ago, Weizmann Institute scientists were among the first to demonstrate the link between cancer and the faulty differentiation of stem cells. Now a new Weizmann Institute-led study, published in Molecular Cell, reveals a potential molecular mechanism behind this link.

24 Jul 2012

Illumina sues IBS and Qiagen for infringement of three patents

Illumina, Inc. today announced that the company has sought leave to file counterclaims against Intelligent Bio-Systems, Inc. and Qiagen NV, which recently acquired IBS, in response to the patent lawsuit brought by Columbia University and IBS on March 26, 2012 in U.S. District Court in Wilmington, Delaware.

From Illumina, Inc. 23 Jul 2012

Protein associated with Huntington’s and other neurodegenerative diseases has several brain-specific forms

A protein essential for metabolism and recently associated with neurodegenerative diseases also occurs in several brain-specific forms. This discovery emerged in the course of a research project funded by the Austrian Science Fund FWF, the findings of which have now been published in the journal Human Molecular Genetics.

23 Jul 2012

Researchers identify several gene mutations responsible for medulloblastoma

Researchers at the Stanford University School of Medicine and Lucile Packard Children's Hospital have identified several gene mutations responsible for the most common childhood brain tumor, called medulloblastoma, adding evidence to the theory that the diagnosis is a group of genetically distinct cancers with different prognoses. These and accompanying findings are likely to lead to less-toxic, better-targeted treatment approaches over the next two years, the researchers said.

23 Jul 2012

Study: HIV-infected women less likely to develop cervical cancer

HIV-infected and uninfected women with normal cervical cytology (Pap test) and a negative test result for oncogenic (tumor inducing) human papillomavirus DNA at study enrollment had a similar risk of cervical precancer and cancer after 5 years of follow-up, according to a study in the July 25 issue of JAMA, a theme issue on HIV/AIDS.

23 Jul 2012

International Congress on Natural Products Research to be held in New York City

The urgent need to evaluate nature's repository of chemicals in plants, microbes, and marine organisms for their potential value in health care will be a major theme of a five-day scientific conference in New York that is expected to draw some 1,200 natural products researchers from around the world.

21 Jul 2012

Study identifies genetic markers that influence protein involved in regulating oestrogen, testosterone levels

A research study led by the Peninsula College of Medicine and Dentistry, University of Exeter, and Boston University School of Medicine, in collaboration with a global consortium, has identified genetic markers that influence a protein involved in regulating oestrogen and testosterone levels in the bloodstream.

21 Jul 2012

Janssen-Cilag receives positive opinion from EMA CHMP for DACOGEN

Janssen-Cilag International NV announced today that the Committee for Medical Products for Human Use (CHMP) of the European Medicines Agency (EMA) has granted a positive opinion recommending approval of DACOGEN (decitabine) for Injection.

21 Jul 2012

Study identifies genetic markers that influence sex hormone-binding globulin

A research study led by Boston University School of Medicine (BUSM) and the University of Exeter in the United Kingdom, in collaboration with a global consortium, has identified genetic markers that influence a protein involved in regulating estrogen and testosterone levels in the bloodstream.

21 Jul 2012

Scientists develop simple assay to diagnose 'superparasites'

Belgian scientists of the Institute of Tropical Medicine (ITM) in Antwerp, Belgium made a breakthrough in bridging high tech molecular biology research on microbial pathogens and the needs of the poorest of the poor. After sequencing the complete genome of Leishmania donovani (a parasite causing one of the most important tropical diseases after malaria) in hundreds of clinical isolates, they identified a series of mutations specific of 'superparasites' and developed a simple assay that should allow tracking them anywhere.

20 Jul 2012

Researchers identify six genes with driving mutations in melanoma

It's been a burning question in melanoma research: Tumor cells are full of ultraviolet (UV)-induced genetic damage caused by sunlight exposure, but which mutations drive this cancer? None have been conclusively tied to melanoma. The sheer abundance of these passenger mutations has obscured the search for genetic driver mutations that actually matter in melanoma development and progression.

20 Jul 2012

Internal clock of human skin responsible for time-based steering of repair and regeneration

A research team at Charité - Universitätsmedizin Berlin together with scientists at a company in Hamburg has now discovered that human skin has an internal clock responsible for the time-based steering of its repair and regeneration, among other things. The team published its first results from their basic research in the current issue of Proceedings of the Academy of Science (PNAS).

20 Jul 2012

Study helps explain why leukemia occurs more frequently as people age

Hundreds of mutations exist in leukemia cells at the time of diagnosis, but nearly all occur randomly as a part of normal aging and are not related to cancer, new research shows.

20 Jul 2012

IMDx HSV-1/2 for Abbott m2000 assay receives CE-marking

IntelligentMDx (IMDx) announced today that it has obtained CE-marking for its fourth automated, high-throughput molecular test designed and developed for the Abbott m2000 System.

20 Jul 2012

Longer looks: Physicians and assisted suicide; Avoid getting sick in July

Peggy Sutherland was ready to die. The morphine oozing from a pump in her spine was no match for the pain of lung cancer, which had evaded treatment and invaded her ribs. … Sutherland, 68, decided to use Oregon's "Death With Dignity Act," which allows terminally-ill residents to end their lives after a 15-day requisite waiting period by self-administering a lethal prescription drug. ... But not all doctors are on board with the law.

20 Jul 2012

Statistical method uses evolutionary information to enhance identification of disease-associated alleles

A book containing misprints may cause annoyance for the reader, but typos in an individual's genetic blueprint (DNA) can mean serious disease or even death. The search for genetic correlates for the wide range of diseases plaguing humankind has inspired a wealth of research falling under the heading of genome-wide association studies (GWAS).

19 Jul 2012

New research sheds light on pluripotency

New research at the Hebrew University of Jerusalem sheds light on pluripotency-the ability of embryonic stem cells to renew themselves indefinitely and to differentiate into all types of mature cells.

19 Jul 2012

Blog examines potential repercussions of CIA's fake vaccination campaign in Pakistan

In this post on her blog, "The Garrett Update," Laurie Garrett, senior fellow for global health at the Council on Foreign Relations (CFR), examines the potential implications of a fake hepatitis vaccine campaign carried out by the CIA in Pakistan last year in an attempt to gather DNA from Osama bin Laden's family.

19 Jul 2012

High vitamin E intake associated with reduced risk of liver cancer

High consumption of vitamin E either from diet or vitamin supplements may lower the risk of liver cancer, according to a study published July 17 in the Journal of the National Cancer Institute.

19 Jul 2012