Polymerase Chain Reaction News and Research

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Polymerase chain reaction (PCR) is a revolutionary laboratory technique that enables the replication of a specific DNA sequence. Using PCR, millions of copies of a target DNA can be easily synthesized within a short period of time.

Assay aids ALK fusion detection in lung adenonocarcinoma

A fully automated immunochemistry assay is highly sensitive and specific for detecting anaplastic lymphoma kinase fusion in primary lung adenocarcinomas, Chinese researchers report.

6 Sep 2013

New method to detect genetic variations that initiate colon cancer

A new, highly sensitive method to detect genetic variations that initiate colon cancer could be readily used for noninvasive colon cancer screening, according to a study published in Cancer Prevention Research, a journal of the American Association for Cancer Research.

4 Sep 2013

Scientists estimate minimum of 320,000 viruses in mammals

Scientists estimate that there is a minimum of 320,000 viruses in mammals awaiting discovery. Collecting evidence of these viruses, or even a majority of them, they say, could provide information critical to early detection and mitigation of disease outbreaks in humans.

3 Sep 2013

Researchers discover 100% genetic match for MERS in insect-eating bat in Saudi Arabia

A 100% genetic match for Middle East Respiratory Syndrome (MERS) has been discovered in an insect-eating bat in close proximity to the first known case of the disease in Saudi Arabia. The discovery points to the likely animal origin for the disease, although researchers say that an intermediary animal is likely also involved.

22 Aug 2013

EGFR mutation testing dropped once funding from pharmaceutical industry discontinued

Significant advances have taken place in the management of patients with advanced and metastatic non-small-cell lung cancer over the last 5 years. Traditionally, all advanced NSCLC patients were treated in a similar manner.

26 Jul 2013

Digital versions of standard molecular biology tool to detect common tumor-associated mutation in CSF

Massachusetts General Hospital (MGH) researchers and their colleagues have used digital versions of a standard molecular biology tool to detect a common tumor-associated mutation in the cerebrospinal fluid (CSF) of patients with brain tumors. In their report being published in the open-access journal Molecular Therapy - Nucleic Acids, the investigators describe using advanced forms of the gene-amplification technology polymerase chain reaction (PCR) to analyze bits of RNA carried in membrane-covered sacs called extracellular vesicles for the presence of a tumor-associated mutation in a gene called IDH1.

24 Jul 2013

Plague detection through anti-carbohydrate antibodies could lead to rapid diagnosis

Even today, the lives of humans and animals are claimed by plague. A new antibody-based detection method can be used to reliably and sensitively identify plague in patient serum and other biological samples.

18 Jul 2013

New method to identify pathogenic strains that cause pneumonia

Researchers from Boston University School of Medicine (BUSM) and George Washington University (GWU) have developed a method to rapidly identify pathogenic species and strains causing illnesses, such as pneumonia, that could help lead to earlier detection of disease outbreaks and pinpoint effective treatments more quickly.

11 Jul 2013

Advanced genetics technologies may help predict patient outcomes in people with ALL

New evidence suggests that using advanced genetics technologies to monitor for remaining cancer cells after treatment may soon become an effective tool to inform treatment decisions and ultimately predict patient outcomes for patients with a particularly aggressive form of acute lymphocytic leukemia (ALL).

10 Jul 2013

Genetic elements from plants entering into eater's bloodstream turn out to be 'false positive'

In 2011 and 2012, research from China's Nanjing University made international headlines with reports that after mice ate, bits of genetic material from the plants they'd ingested could make it into their bloodstreams intact and turn the animals' own genes off.

27 Jun 2013

Research may lead to new screening method for oral cancer and HPV

Research being carried out at the University of Notre Dame and its affiliated Harper Cancer Research Institute may lead to the development of a rapid, cost-effective means of screening for oral cancers and the human papillomavirus.

25 Jun 2013

New technique for identifying mice in breeding colonies

Immunocompromised mice, created by inactivating the genes that would allow them to recognize and attack donor cells or organs, are critical for studies of bone marrow reconstitution.

10 Jun 2013

Viral load: A new technique that helps doctors diagnose chronic viral diseases

To test the severity of a viral infection, clinicians try to gauge how many viruses are packed into a certain volume of blood or other bodily fluid. This measurement, called viral load, helps doctors diagnose or monitor chronic viral diseases such as HIV/AIDS and hepatitis.

31 May 2013

New LAMP malaria test to improve diagnosis for imported UK cases

A new, highly sensitive blood test that quickly detects even the lowest levels of malaria parasites in the body could make a dramatic difference in efforts to tackle the disease in the UK and across the world, according to new research published in the Journal of Infectious Diseases.

17 May 2013

Researchers urge doctors to consider Lyme disease as cause when presented with skin lesions

When a person contracts Lyme disease, quick diagnosis and treatment are essential to avoiding long term complications. But the diagnostic process may be delayed if a physician does not recognize a skin rash caused by Lyme disease because it does not have the bull's-eye appearance that is best known to physicians and the public.

23 Apr 2013

DNAzymes, gold nanoparticles and disease detection: an interview with Dr Chan and Kyryl Zagorovsky, University of Toronto

Gold nanoparticles are tiny spherical particles made out of gold atoms with sizes on nanometre scale. This is around 1,000 times smaller than the thickness of human hair.

23 Apr 2013

New assays are effective in managing patients with influenza virus infection

Over 40,000 people die each year in the United States from influenza-related diseases. In patients whose immune systems are compromised, antiviral therapy may be life-saving, but it needs to be initiated quickly. It is therefore crucial to diagnose and type the influenza rapidly.

18 Apr 2013

Researchers diagnose genetic disease in embryonic DNA without biopsy

Preimplantation genetic diagnosis (PGD) technologies allow identification of genetic disorders in human preimplantation embryos after in vitro fertilization (IVF) and before the embryo is transferred back to the patient.

3 Apr 2013

New screening procedure determines animal, plant, and microbial substances in foodstuffs

Scientists at the Institute of Molecular Genetics, Genetic Security Research and Consulting at Johannes Gutenberg University Mainz (JGU) have developed a novel screening procedure that provides for highly sensitive, quantifiable analysis of animal, plant, and microbial substances present in foodstuffs.

28 Mar 2013

Researchers develop single molecule test for detecting methylated DNA

Collaborators from Mayo-Illinois Alliance for Technology Based Healthcare have developed a new, single molecule test for detecting methylated DNA. Methylation -- the addition of a methyl group of molecules to a DNA strand -- is one of the ways gene expression is regulated.

15 Mar 2013