Interplaying Factors That Effect Multiple Sclerosis Causation and Sustenance

  • Calenoff E
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Abstract

The author hypothesized that multiple sclerosis (MS) is a humoral autoimmune disease, caused by faulty interplay between myelin-specific, dimeric IgE, specifically competing non-IgE antibodies and IgE-triggered degranulating mast cells. The principal fault was believed to be insufficient quantity of protective, specific non-IgE antibodies. Also conjectured was the possibility of an unexpected and adverse immune suppression caused by none-MS pharmaceuticals being consumed by patients for their MS or for other conditions. To test both hypotheses, a mimotopic, peptide antigen-based, serum immunoassay was developed to measure dimer-bound IgE excess among MS patients, wherein the IgE specifically complexes with two or more myelin surface epitopes at an interval of 40–100 Angstroms, a separation critical for mast cell degranulation and cell damaging effect. MS test sensitivity and specificity, when analyzing five previously untreated patients for dimeric IgE presence, was 100%. In direct comparison, twenty age- and gender-matched female and male control subjects were test negative. Analysis of 35 multiple sclerosis patients, who were concomitantly being treated with potentially immunosuppressive pharmaceuticals, appeared to show the substances’ negative effect upon MS causation, progression, or specific immunoassay performance. Therefore, MS is likely an autoimmune disease caused by IgE-mediated mast cell degranulation possibly in conjunction with immunosuppressive agents.

Figures

  • Figure 1: Continued.
  • Figure 1: Continued.
  • Figure 1: Check description in Section 2.
  • Figure 2: A schematic illustration of myelin proteolipid protein Isoform 1 is shown. Depicted are: (a) amino acid sequence portions that are net hydrophilic and located on the myelin protein (oligodendrocyte) surface (blue-green highlight); (b) portions that are net hydrophobic and project inwardly within the myelin glycolipid layer (uncolored); and (c) portions that are hydrophilic and intracellular (yellow highlighted).
  • Figure 3: A schematic drawing is shown wherein the location of a myelin-specific epitope, ADARM, is illustrated by performing a pictorially functional readjustment of Figure 1(a), removing rows 1–38, 48-49, 50–116, 155–188, 198-199, and 209–277 to visualize the 3 hydrophilic surface platforms, susceptible to autoantibody binding. The individual platforms encompass amino acids number 39−49, 189–197, and 200– 208. Two intracellular, hydrophilic platforms encompass amino acids number, 117–141 and 145–154. The unique, corresponding amino acid hydrophilic indices, −0.5, 3, −0.5, 3, and −1.3 depicted in column 6.
  • Figure 4: Displayed is the measured distance between two IgE autoantibodies if each was to bind a potential epitopic dimer site (QAPEY and VTLRI) with each site incorporating five, uniquely sequenced, contiguous amino acids flanked on either end by a nonreactive, normally present amino acid thus making a 7 amino acid, antibody binding footprint. Each intervening amino acid between epitopes is estimated to be 10.6 Ångströms in width. When the interfootprint dimer distance analysis is performed, the potential dimer between QAPEY and VTLRI is inadequate for mast cell degranulation because there are 13 intervening amino acids between the two epitopes, and this is equivalent to a distance of 103 Ångströms, which is 3 Ångströms above the mandated upper limit of 100 Ångströms. HI: peptide hydrophilic index.
  • Table 1: Illustrated is the method employed in estimating the average diameter, in Ångströms, of the twenty standard amino acids. The method entails (1) estimating the nanometers diameter of each non-alanine amino acid relative to the known diameter of alanine, 0.69 nanometer, using the formula, amino acid molar mass/alanine molar mass ×0.69 nanometer(s); (2) multiplying each estimated amino acid diameter times 10 in order to convert each amino acid diameter from nanometers to Ångströms; (3) summing the Ångströms diameters and dividing by 20 to yield an average amino acid diameter per amino acid equal to 10.6 Ångströms.
  • Figure 5: A potentially functional dimer site with an interval distance of 95 Ångströms between the epitopes VTLRI andHSYQE is illustrated.

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APA

Calenoff, E. (2012). Interplaying Factors That Effect Multiple Sclerosis Causation and Sustenance. ISRN Neurology, 2012, 1–27. https://doi.org/10.5402/2012/851541

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