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The Pfizer document pertaining to bio-distribution and accumulation of lipids
Radioactive rats are telling stories
I have been taking my time diving into the 6 pages of documents dumped as part of the Pfizer data ‘revelations’. The ‘data’ in these documents are elusive, to say the least, and some of the documents are (in some cases) still redacted in places and others are inexplicably difficult to extract data from. The focus of this Substack article will be the ‘Final Report’ entitled “A Tissue Distribution Study of a [3H]-Labelled Lipid NanoParticle-mRNA Formulation Containing ALC-0315 and ALC-0159 Following Intramuscular Administration in Wistar Han Rats” in Test Facility Study No. 185350 [FDA-CBER-2021-5683-0013962]. This study was sponsored by Acuitas Therapeutics Inc., 6190 Agronomy Road, Suite 402, Vancouver, British Columbia, V6T 1Z3 Canada (Sponsor Reference No. ALC-NC-0552).
The tables of interest to me are on pages 23-27. They summarize the data gathered in exploration of the mean (sexes-combined/separate) concentration and recovery of total radioactivity in whole blood, plasma and tissues following single intramuscular (IM) administration of [3H]-08-A01-C01 to Wistar Han Rats. The target dose level was 50 ug mRNA per animal with 1.29 mg total lipid per animal. But I am also interested in the tables for the original dose data. I will get to those at the end.
It is noteworthy that the original dose was meant to be 100 ug, but this did bad things to the rats. They referred to these bad things as ‘adverse clinical signs’. What, like death?1
Initially, 21 male rats were dosed at 100 ug mRNA/animal. Some adverse clinical signs were observed after approximately 24 hours post-dose and a subsequent review of the data showed concentrations were well detected in tissues. After discussions with the Sponsor, the target dose level was lowered to 50 ug mRNA/animal by amendment for the remainder of the study.
The results are expressed as total lipid concentration (ug lipid equiv/g (mL)) and percentage of administered dose in tabular form. To be clear, they labeled lipids akin to the lipids used as delivery vehicles for the mRNA in the COVID-mRNA injectable products2 with a radioactive isotope that can be measured on-site. 3H or Tritium, a rare and radioactive isotope of hydrogen, is a commonly-used as a label for a variety of probes and substrates used in in vitro assays. The rats are typical ‘lab models’ for various assays. Poor little guys. Thank you for your unwilling sacrifice.
First interesting result: This is a summary of the concentrations of the IM-injected 50 ug dose in the rats. The following plot does not separate by gender. 18.05% of the 50 ug dose accumulates in the liver after just 8 hours and remains at this concentration up to the 48-hour mark. It is unknown if this plateau trend continued or if the increase in percentage injected amount continued. The target dose level is 50 ug mRNA per animal with 1.29 mg total lipid per animal. So this means that the liver cells that contained the lipids had accumulations of 9 ug of mRNA and 0.23 mg of total lipid after just 8 hours. It is notable that the dose given in a typical Pfizer mRNA shot is 30 ug of modRNA in a 0.3 ml dose so the dose of mRNA to the rats is higher than for the human but we don’t really know how much Lipid NanoParticle is delivered to the human based on this data. I would make an educated guess that it would be about 0.8 mg. But that’s just a guess.
Second interesting result: I chose the liver, spleen and adrenals (and ovaries) and subsequent accumulation by gender for plotting. The female accumulation appears to be higher and increasing at the 48-hour mark. I wonder if it continues to increase? Accumulation in the spleen? And the adrenals? What effects would this have? The adrenals play a critical role in the Renin Angiotensin Aldosterone System (RAAS) pathway to regulate blood pressure and electrolyte levels. The accumulations are almost 1/3 of the original dose in the case of the female accumulation following 48 hours.
Third interesting result: Accumulation in the ovaries. Perhaps even more disturbing than the mean concentration of lipids (12.3) in the ovaries at the 48-hour mark is the slope of the trajectory. I am not promoting leaving the poor rats alive to suffer the effects of the radiolabeled-lipid bio-accumulation, but I do wonder what would have happened had they extended the post-dose sacrifice times beyond 48 hours. What would the concentrations be at hour 72 or 96 or 168, etc…? I am not saying that I know the accumulation rate is exponential, but considering what this study is a model for, I think it is vital to investigate this and to answer the question, ‘do the LNPs continue to bioaccumulate in the ovaries and what effect is this having on this organ?’
The last point of interest I think that is noteworthy are the very rapid accumulations in the organs when the dose was higher at 100 ug.
This chart is perhaps the most striking of them all. The charts above already reveal accumulation in the liver, spleen, adrenals and ovaries, but what Figure 4 reveals is that a higher injected dose results in higher concentrations of lipids after just 24 hours. The concentrations hit the ~30, 25 and 15 marks after about 6 hours for the liver, spleen and adrenals, respectively. I remarked previously on the relevance of knowing if the accumulation continues post hour 48 and it appears as though when the dose is higher, the accumulation peaks at ~50 and then suddenly drops. It would be equally interesting to know if this drop in concentration continues. I mean, it’s kind of irrelevant to ask since the rats started to die. But, this data is only for males. You’ll notice in Figure 2 that the accumulation/concentration trends are consistently different for males and females subjects: the females appear to keep accumulating post 48 hours.
Figure 5 shows both doses (50 and 100 ug) superimposed and the effects of accumulation in the liver, spleen and adrenals of males rat subjects. It is clear that the higher dose (red) results in faster and higher peak concentration of lipids in these organs. What is not known, is whether or not the drop in concentration following hour 24 occurs in both females and males. I suspect based on the trends observed in the females that we would not see this drop in concentration.
I wrote this data up for two main reasons:
Some people still aren’t aware of the FOIA requested Japanese study data that showed biodistribution and accumulation of LNPs.
Some people might need a better explanation of what biodistribution and accumulation means in the context of these COVID-19 injections.
In order for this article to be complete, I would need to do a comprehensive write-up of the functions of the organs listed here. But, my bandwidth is short. So in short form, the adrenal glands are endocrine glands that produce a variety of hormones including adrenaline, aldosterone and cortisol. The spleen is essential for filtering blood and the liver is essential for maintaining waste removal and in regulating blood sugar levels. These organs, of course, comprise parts of the system of the human body and work in complex harmony.
Ultimately, the effects of high concentrations of Lipid NanoParticles (LNPs) in these organs is known. Also unknown, is the effect of the production of massive amounts of spike protein using the modRNA templates carried by these LNPs.
I think, if this study’s results had been presented in a balanced way, the conclusions would not simply have been that most of the LNPs were found at the site injection. Rather, a more truthful and balanced conclusion may have been something like this:
Although greatest mean tissue concentration remained at the injection site, biodistribution was clearly demonstrated and lipids were found in high concentrations in the liver, spleen, adrenals and ovaries following a short time period of 48 hours. Whether or not the accumulation continued following this time period is unknown. More research is required before trials on humans are initiated.
In the 100 μg mRNA male group, approximately 24 h following administration, animal 021M was noted to have decreased activity, ungroomed, brown staining on muzzle and irregular respiration. A decrease in bodyweight was noted in all remaining animals (approximately 16 g, equivalent to ca. 7% reduction of bodyweight) and food hoppers appeared untouched. By approximately 30 hours post-dose, animal 021M was also piloerect, hunched, and was hypersensitive to noise stimulus. Animal 021M was humanely killed and the diagnostic necropsy carried out showed one finding in the liver (prominent lobular architecture). Additionally, animals 019M and 020M were hunched and piloerect from approximately 30 h post-dose onwards.
“The test item, 08-A01-C01, is an aqueous dispersion of lipid nanoparticles (LNP), comprised of a proprietary mixture of lipid components (including ALC-0315, ALC-0159, distearoylphosphatidylcholine, and cholesterol) and mRNA. The test item contains trace amounts of radiolabelled [Cholesteryl-1,2-3H(N)]-Cholesteryl Hexadecyl Ether ([3H]-CHE), a non-exchangeable, non-metabolisable lipid marker used to monitor the disposition of the lipid nanoparticles (containing encapsulated mRNA). Once intracellular, the [3H]-CHE does not recirculate and therefore allows assessment of distribution of the particles.”