All posts by admin

Archie Cochrane speaking

I did not expect what a new Cochrane writes on the prevention of nutritional rickets in term born children — Cochrane Database Syst Rev. 2007 concludes

There a only few studies on the prevention of nutritional rickets in term born children. Until new data become available, it appears sound to offer preventive measures (vitamin D or calcium) to groups of high risk, like infants and toddlers; children living in Africa, Asia or the Middle East or migrated children from these regions into areas where rickets is not frequent. Due to a marked clinical heterogeneity and the scarcity of data, the main and adverse effects of preventive measures against nutritional rickets should be investigated in different countries, different age groups and in children of different ethnic origin.

May I summarize: 1. only a few studies; 2. vitamin D OR calcium and 3. to high risk kids only. This looks different to what Nestlé manufactures at the moment.

Original research in blogs

It does not seem very unusual to have original research in blog posts. Evolgen is doing that by currently publishing a series exploring the evolution of a duplicated gene in the genus Drosophila. So finally science is more than knowing which is a high impact journal – peer review may be replaced comments below.

What’s in your genome?

My latest idea is to create a wiki like annotation server that lets everybody create rules how to analyze an individual genome – we could use the CV dataset as a testbed.
Maybe we should start with SNPs only and develop some ground rules first at which threshold any predictive rule may be applied?
Otherwise these personal genomes will be quite useless, yea, yea.

Auto desensitization

Blackley found already in 1873 an interesting explanation of the “no allergy in farming children” effect by referring to some kind of auto desensitization in this particular environment – e.g. the high pollen and LPS exposure.
Do you know that a commercial allergen preparation used for desensitization already includes a LPS derivate, 3-o-desacyl-4′ monophosphoryl lipid A as an adjuvant? It is believed to push the pollen reaction into a IL12 – IFNg – Th1 pathway. This therapeutic approach already perfectly fits the early explanation of Blackley.
When will the allergy farming lobby ultimately close their files?

Henryk Goldszmit (Janusz Korczak)

moblog – When being in Warsaw for the first time I wanted to honour Henryk Goldszmit / Janusz Korczak by visiting the orphanage. This was a home for Jewish children in the Jaktorowska (former Krochmalna) Street. Henryk, born 1878 or 1879, a physician, writer and outstanding pedagogue was the director of the orphanage since 1913. Continue reading Henryk Goldszmit (Janusz Korczak)

Contrary or Contradictory

A forthcoming “Perspectives in asthma” paper in “JACI” by Litonjua and Weiss will be about the vitamin D hypothesis. Although the authors find that

Evidence exists that vitamin D induces a shift in the balance between TH1 and TH2-rype cytokines toward TH2 dominance

they make a largely unexpected turn by saying that vitamin DEFICIENCY may be to blame for the asthma epidemic. The basic argumentation is

We hypothesize that as populations grow more prosperous and more Westernized, more time is spent indoors and there is less exposure to sunlight leading to vitamin D deficiency…

Given the immediate and effective vitamin D production in skin and its longterm availability by fat stores I cannot follow their last conclusion. Continue reading Contrary or Contradictory

The history of vitamin D discovery, industrial production and marketing

There is a new German dissertation about Vigantol (R) excellently written by Jochen Haas and just published at Wissenschaftliche Verlagsgesellschaft “Vigantol, Adolf Windaus und die Geschichte des Vitamin D”. Altogether 425 pages, it contains a biographical sketch of Windaus (p 32-83), a detailed summary of the juristical questions about irradiating ergosterin (p 96-154), a detailed history of the pharmaceutical production (p 155-238) and finally a chapter about marketing of different brands by Merck (p 238-281). Continue reading The history of vitamin D discovery, industrial production and marketing

Science skills

Theodor Fontane is characterizing Adolf Menzel:

Gaben, wer hätte sie nicht.
Talent, Spielzeug für Kinder.
Erst der Ernst macht den Mann,
Erst der Fleiß das Genie.

Skills, everyone has quids.
Talents, toys of the kids.
Seriousness makes a man,
dilligence the genius span.

sorry for my translation ;-)

Historical research on hayfever

It seems that Google has several interesting books that may be downloaded if you are using a proxy located somewhere in the U.S. A. It is quite interesting to see that there are many more books out there than I thought before:

g1.png g2.png g3.png g4.png

Most interesting is certainly the 1880 2nd edition of Blackley’s “Hay fever” Continue reading Historical research on hayfever

Why the allergy epidemic did not already start 1935 in Germany

moblog – I have now spent another day at the Berlin Document Center browsing through hundreds of RKI pages – manuscripts, correspondence, bills and personal files. My goal was to find out why the allergy epidemic did not already start off 1935 in Germany when vitamin D synthesis was already possible on a large scale.
Indeed, I found evidence that at least 3 companies radiated at that time yeast derived ergosterin by UV quartz lamps – I.G. Farben, Nordmark-Werke and Deutsche Vitamin Gesellschaft. The number of companies in this field Continue reading Why the allergy epidemic did not already start 1935 in Germany

The first slide please

Thousands and millions of talks start with the “first slide please” although there is no “slide” at all. This post, however, is more about my problems to manage the 300 slide shows here while making a new one. I found some nice software, that can re-index my old PP slides, and let me drag and drop to a new slide show. Costs for Slide Executive are ~79€. Is there any alternative? Continue reading The first slide please

DNA to heal asthma?

A new nature medicine review has listed clinical trials targeting toll-like receptors. These including 3 preclinical studies using cpG-ODNs against TLR9 by Dynavax Astra-Zeneca, Coley / Sanofi-Aventis and Idera / Novartis. Lets wait and see…