Traveler said...
I have used this resource to learn about the bands reported on the Western Blot for quite a few years now, because it's the best I have found. It's based on the PubMed articles that have been located for each band - although it can get a little confusing as most of the articles are talking about more than one band in each article: www.reocities.com/HotSprings/Oasis/6455/western-blot.txt
The author (Doherty) begins by summarizing all the WB bands mentioned in "medical literature"; I'll take his word for it. He lists the following as Bb specific. In other words, you should assume that if these bands show in your WB bands, you have (or at least had) Lyme disease, no questions asked. This is a lengthier list of "Bb specific" bands than I'm used to seeing. Notice that 23 is missing.
14-kDa internal flagellin fragment [specific for Bb]
*21-kDa OspC [specific for Bb]
22-kDa OspC [specific for Bb]
25-kDa OspC [specific for Bb]
*28-kDa OspD, Oms28 [specific for Bb]
31-kDa OspA [specific for Bb]
34-kDa OspB [specific for Bb]
35-kDa OspB [specific for Bb]
37-kDa P37, FlaA gene product, [specific for Bb]
*39-kDa BmpA [specific for Bb]
47-kDa P47 fibronectin-binding protein [specific for Bb]
50-kDa [specific for Bb]
83-kDa p83 high molecular mass protein [specific for Bb]
*93-kDa an immunodominant protoplasmic cylinder antigen, associated with the flagellum [specific for Bb]
94-kDa PBP [specific for Bb]
Let's take a look at the links he provides.
LINK 1: https://www.ncbi.nlm.nih.gov/pubmed/10638032?dopt=Abstract
States that in the blood of 18 Bb-infected dogs, "17 of 18 of the dog sera reacted with immunodominant antigens at 20-22 kDa (protein C, pC), 31 kDa (outer surface protein A, OspA), 34 kDa (outer surface protein B, OspB), 41 kDa (flagellin), 60 kDa ("common antigen"), and/or 100 kDa (presumably p100)."
LINK 2: https://www.ncbi.nlm.nih.gov/pubmed/9920119?dopt=Abstract
Mentions "three recombinant borrelial proteins: the 14-kDa flagellin fragment, the outer surface protein C (22 kDa) and the high molecular mass protein p83 (83 kDa)."
LINK 3: https://www.ncbi.nlm.nih.gov/pubmed/1556546?dopt=Abstract
"Tryptic cleavage of recombinant B. burgdorferi 41 kDa flagellin, expressed in E. coli, produced a peptide fragment which was recognized exclusively by antisera to Borrelia species. This peptide was designated as the 14 kDa fragment due to its migratory behaviour
in SDS-PAGE."
LINK 4: https://www.ncbi.nlm.nih.gov/pubmed/9440203?dopt=Abstract
"With the intention to evaluate the frequency of asymptomatic infections with TBE virus and B. burgdorferi clinical data and serum specimens were collected from 393 individuals living in an area endemic for both agents (Freiburg, southern Germany). Sera were examined by ELISA. Borderline and positive results were checked by immunoblotting. Only specific antibodies detected by immunoblotting (B. burgdorferi: 22 kDa, 31 kDa, 34 kDa, 39 kDa, 83 kDa; TBE: glycoprotein E) were assessed as positive findings. Specific antibodies to B. burgdorferi were detected in 17/105 individuals with possible symptoms of borreliosis (16%) and in 36/288 individuals without current or previous symptoms of borreliosis (12.5%)."
Note that the authors started out with the assumption that 22, 31, 34, 39, and 83 were Bb-specific; this essay does not show why they believe that. Also note that while 17 test subjects tested "positive" and showed possible symptoms of Lyme, more than twice this number of subjects (36)
tested "positive" but did not show any past or present symptoms of LD illness.LINK 5: https://www.ncbi.nlm.nih.gov/pubmed/9175831?dopt=Abstract
"p35 and p37 are Borrelia burgdorferi genes encoding 35 and 37 kDa proteins. The gene products were identified by differential screening of a B. burgdorferi expression library with sera from B. burgdorferi infected- and B. burgdorferi-hyperimmunized mice."
LINK 6: https://www.ncbi.nlm.nih.gov/pubmed/7791177?dopt=Abstract
"Sera from 20 children with Lyme arthritis from an endemic area were assayed, and the results compared with those obtained in 162 control sera from the same area. Eighty-seven percent of control sera revealed no bands on immunoblot, and all had < or = 4 bands. All Lyme arthritis sera revealed > or = 5 bands (mean 8.4, range 5-13 bands). Bands of molecular weight 25, 28, 39, 47, 50, and 93 kDa were seen in patients and not in controls. There was no correlation between duration of arthritis or activity of arthritis at presentation and number of bands present."
Very interesting...all blood samples from the Lyme-positive children had
5 or more bands reactive! And apparently bands 25, 28, 39, 47, 50 and 93 were only seen in the 20 children, not in the 162 control sera, although the abstract does not provide more specific details than that.
LINK 7: https://www.ncbi.nlm.nih.gov/pubmed/8223404?dopt=Abstract
"The most important immunodominant proteins of Borrelia burgdorferi are the 94 kDa, 60 kDa, 41 kDa (flagellin), 34 kDa (Osp B), 31 kDa (Osp A), 30 kDa, 21 kDa (Osp C), and 17/18 kDa proteins. Whereas the 60 kDa, 41 kDa, and 34 kDa constituents reveal a marked cross-antigenicity with other spirochetes and even more distantly related bacteria, antibodies against the 94 kDa, 31 kDa and 21 kDa proteins are largely species-specific...In the diagnosis of late-stage infection, blot positivity relies on the presence of the 94 kDa, 39 kDa, 31 kDa, 30 kDa and 21 kDa bands."
Doherty then goes on to address the cross-reactivity of certain bands with other bacteria.
So after all his research, he claims that these bands are specific for Bb:
14-kDa ?
21-kDa
22-kDa OspC
25-kDa OspC
28-kDa OspD
31-kDa OspA
34-kDa OspB
35-kDa
37-kDa
39-kDa
47-kDa
50-kDa
83-kDa
93-kDa
94-kDa
$64,000 question: so why aren't all the above "double-starred bands" with IGeneX? They have only chosen these ones:
23-25
31
34
39
41
83-93
Post Edited (DougFresh) : 2/4/2017 8:01:02 PM (GMT-7)