Sunday, June 20, 2010

New quick and quality Lyme Test

An antibody is made up of two heavy chains and...Image via Wikipedia



From the June 16th Journal of  Clinical and Vaccine Immunology


In the spirit of qualifying for some karma,  I wish to thank Lyme Disease News for inspiring me to look this up  this abstract. 
Instances in bold were added by me for significance. The explanations in italics were also added by me from Wikipedia.

Rapid, simple, quantitative, and highly sensitive antibody detection for lyme disease.

Burbelo PD, Issa AT, Ching KH, Cohen JI, Iadarola MJ, Marques A.

Neurobiology and Pain Therapeutics Section, 49 Convent Drive, Building 49, Room 1C20, NIDCR, NIH, Bethesda, MD 20892-4410, USA. burbelop@nidcr.nih.gov

Abstract
There is currently a need for improved serological tests for the diagnosis and monitoring of Lyme disease, an infection caused by Borrelia burgdorferi. In the present study, we evaluated luciferase (Luciferase is a generic term for the class of oxidative enzymes used in bioluminescence and is distinct from a photoprotein)  immunoprecipitation systems (LIPSs) for use for profiling of the antibody responses to a panel of B. burgdorferi proteins for the diagnosis of Lyme disease.

 Initially, serum samples from a cohort of patients and controls (n = 46) were used for training and were profiled by the use of 15 different B. burgdorferi antigen (a molecule recognized by the immune system) constructs. For the patient sera, the antibody (antibodies [also known as immunoglobulins, abbreviated Ig] are gamma globulin proteins that are found in blood or other bodily fluids of vertebrates, and are used by the immune system to identify and neutralize foreign objects, such as bacteria and viruses) responses to several B. burgdorferi antigens, including VlsE, flagellin (FlaB), BmpA, DbpA, and DbpB, indicated that the antigens had high levels of immunoreactivity. However, the best diagnostic performance was achieved with a synthetic protein, designated VOVO, consisting of a repeated antigenic peptide sequence, VlsE-OspC-VlsE-OspC,

Analysis of an independent set of serum samples (n = 139) used for validation showed that the VOVO LIPS test had 98% sensitivity (95% confidence interval [CI], 93% to 100%; P < 0.0001) and 100% specificity (95% CI, 94% to 100%; P < 0.0001). Similarly, the C6 peptide enzyme-linked immunosorbent assay (ELISA) also had 98% sensitivity (95% CI, 93% to 100%; P < 0.0001) and 98% specificity (95% CI, 90% to 100%; P < 0.0001).

Receiver operating characteristic analysis revealed that the rates of detection of Lyme disease by the LIPS test and the C6 ELISA were not statistically different. However, the VOVO LIPS test displayed a wide dynamic range of antibody detection spanning over 10,000-fold without the need for serum dilution.

These results suggest that screening by the LIPS test with VOVO and other B. burgdorferi antigens offers an efficient quantitative approach for evaluation of the antibody responses in patients with Lyme disease.
PMID: 20392886 [PubMed - in process]

No word on availability or price as yet.


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Tampa, FL, United States
I thought that my "troubles" began in 1989 when I was rear-ended by a druggie going 60 miles an hour while I was stopped at a city red light. Two years later, Fibromyalgia was diagnosed. Since I had all the symptoms, it seemed like a valid diagnosis and I was grateful to finally be diagnosed with something! Subsequently, I spent many years immobilized with widespread pain secondary to only being treated with a series of SSRI's. In 1994 I had to retire early and lost my new husband who, like my former employer, just couldn't understand my sudden change in behavior and decrease in mental faculties. To be somewhat fair, those were the "Dark Ages" in Fibromyalgia treatment. I didn't know until 2001 that my "troubles" had started on a beautiful day in 1985 when walking on the Mohawk Trail in NY I was bitten by a microscopic tick and developed Lyme Disease that was misdiagnosed as psychiatric problems, FM then CFS for the next 15 years. If my story sounds like yours, please, PLEASE get tested for Lyme by a reputable laboratory and interpreted by what we call a LLMD (Lyme-literate MD).Both the lab and the MD are equally important to your quality of life.