Apolipoprotein E4 enhances attachment of Chlamydophila (Chlamydia) pneumoniae elementary bodies to host cells.
Department of Immunology and Microbiology, Wayne State University School of Medicine, Wayne State University School of Medicine, Gordon H. Scott Hall, Detroit, MI 48201, USA.
Chlamydophila (Chlamydia) pneumoniae is an intracellulari respiratory pathogen known to cause community-acquired pneumonia. Infection with this organism has been associated with atherosclerosis, inflammatory arthritis, and other chronic diseasesi, many of which also have been associated with possession of the epsilon4 allele at the APOE locus on (human) chromosome 19. An earlier study from this laboratory suggested that some relationship exists between apolipoprotein E4 (apoE4), the product of the epsilon4 allele, and the pathobiology of C. pneumoniae. A standard attachment assay and real time PCRi targeting a sequence on the C. pneumoniae chromosome were used to monitor host cell binding of elementary bodies (EBi) of that organism. Our data indicate that 3-fold more EB of strain AR-39 attach to an epsilon3 homozygous human cell line transfected with a plasmid expressing the epsilon4 coding sequence than to the same cell line harboring empty vector, vector containing an irrelevant insert sequence, or vector containing the DNA sequence encoding apoE3. The quantitative real time data were confirmed by immunolabeling of chlamydial inclusions in parallel attachment and infection assays. Experiments using Chlamydophila trachomatis EB showed no enhancement of attachment in the presence of the epsilon4 allele in any assays. These observations indicate that apoE4 enhances attachment of C. pneumoniae EB, but not those of C. trachomatis, to target host cells.
PMID: 17997273 [PubMed - indexed for MEDLINE]
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Nelly (France-neuroLyme and ????)

Nelly- Thanks for finding
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CAPi for Cpni 11/04. Dx: 25yrs CFSi & FMSi. Currently: 150mg BID Roxithromycin, Doxycycline 100mg BID, Tinii 1000mg/day pulses; Vit D2000 units, T4 & T3
I'm one of those who are
I'm one of those who are having a harder time getting rid of Cpni. I also have mercury issues (also thought to be associated with APOE4). I was sure that I would be one of those with this genetic mutation, so I got tested. Turns out I am E3/E3 - i.e. I am a total "norm" at least as far as APOE is concerned.
I think there are a whole heap of genetic factors out there which determine predisposition to chronic illness, the vast majority of which we are totally unaware of. I think the importance of any single gene - e.g. APOE is probably overstated.
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Hunter: Don't think - experiment
Yes, Jim, and Garcia, I am
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Nelly (France-neuroLyme and ????)
Nelly- Have you had a trial
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CAPi for Cpni 11/04. Dx: 25yrs CFSi & FMSi. Currently: 150mg BID Roxithromycin, Doxycycline 100mg BID, Tinii 1000mg/day pulses; Vit D2000 units, T4 & T3
Jim, I have taken nearly
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Nelly (France-neuroLyme and ????)
Nelly - My husband has been
Nelly -
My husband has been on Rifampin 600mg once daily since November. I think it has had a very positive effect for him and has been well tolerated once we got past the first herx. The only downside I can really say is that it stirs up the porphyriai dragon.
Since you also have lyme - double bonus - Rifampin is good for the TBI's.
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Daisy - Husband on CAPi 5/07. "When Going Thru Hell, Just Keep Going", Winston Churchill
Thanks Daisy, I'm not
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Nelly (France-neuroLyme and ????)
See this paper for a
Thanks Norman, I will be
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Nelly (France-neuroLyme and ????)
NellyP, from what I have
NellyP, from what I have read on this site, it may be kinder to you experience to start with the Doxyi and macrolide then after several months progress to the nitroidazole pulses doing this for for about 6 months and then if it seems like the right thing for you go on to replace doxy with Rifampin. Just my humble opinion (JMHO).
Louise
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Louise-CFSi, CPN+/Bb+ Wheldon CAPi 6/07, Cholestyramine1-2pksHSforPorphoria& Endotoxinsi, Doxy100daily,Roxi300BID,Tini500mgBIDpulses,VitD3-4000IU,MagnascentIodine,{S.O.D.3TID[KAL Brand],+Pyruvate3.75G+SAM-eForEnergy}
Nelly- I echo Louise's
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CAPi for Cpni 11/04. Dx: 25yrs CFSi & FMSi. Currently: 150mg BID Roxithromycin, Doxycycline 100mg BID, Tinii 1000mg/day pulses; Vit D2000 units, T4 & T3
Jim and Louise, As you may
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Nelly (France-neuroLyme and ????)
Nelly- I know whereof you
Nelly- I know whereof you speak, as you were part of the old infectious/immunei yahoo group that I was part of, along with Rich Von Kronenberg, Bleu and others, when I discovered I had Cpni and then started Cpnhelp! A long time ago. That's why I've always been glad to see your contributions here. I also know what you mean about how long it took to tolerate full regimens. Whether it is the poly-microbial aspect of our problem for some of us, or the multi-system extent of our infection, or other factors, some of us in the CFSi/ME range appear to require a slower course of treatment because of the severity of our initial reactions. Like you I feel clearly that antibiotic treatment saved my life. I actually have a life now! Even though I hover at 70-80% improvement and still react (mildly) to the CAPi meds. I still suspect that Rifampin would be the addition that could take me the next step.
By the way, one of the things that made a big difference was the use of INHi for at least 2 years. Even at 150mg a day, half the general 300mg dose, it made a big difference in my immune functioning and brought me from 50% improvement to 70%. In the original Stratton/Mitchell patent work INH was the fastest in clearing macrophages of Cpn. You might try pulsing it with the flagyli, as Dr. Stratton has suggested.
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CAPi for Cpni 11/04. Dx: 25yrs CFSi & FMSi. Currently: 150mg BID Roxithromycin, Doxycycline 100mg BID, Tinii 1000mg/day pulses; Vit D2000 units, T4 & T3
Jim, I remember you well
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Nelly (France-neuroLyme and ????)
Hello NellyP, I do not know
Hello NellyP, I do not know you not from you past treatments and communications here or elsewhere. When in doubt I err on the side of conservative progress for folks asking for feedback on CAPi. Overly agressive treatment needs to be weighted well and judiciously taken for many of us CFSi/ME, Bb to avoid being so overwhelmed that treatment is ended.
I've been reading these posts for the better part of a year and have seen your name several times, you could have been touching base rarely and thinking on starting for a good long time before doing anything about it for all I could tell.
Wishing you a lack of "fun" on Rifampin, just a managable healing journey.
Louise
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Louise-CFSi, CPN+/Bb+ Wheldon CAPi 6/07, Cholestyramine1-2pksHSforPorphoria& Endotoxinsi, Doxy100daily,Roxi300BID,Tini500mgBIDpulses,VitD3-4000IU,MagnascentIodine,{S.O.D.3TID[KAL Brand],+Pyruvate3.75G+SAM-eForEnergy}
Jim, Is there anyway to
Jim, Is there anyway to expand the size of the signature that is allowed? I would do well with about 2 more lines to say what I want to communicate?
Louise
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Louise-CFSi, CPN+/Bb+ Wheldon CAPi 6/07, Cholestyramine1-2pksHSforPorphoria& Endotoxinsi, Doxy100daily,Roxi300BID,Tini500mgBIDpulses,VitD3-4000IU,MagnascentIodine,{S.O.D.3TID[KAL Brand],+Pyruvate3.75G+SAM-eForEnergy}