All posts by admin

Pandemy of vitamin D deficiency

Yes, we know “slow virus is good for your lab as it keeps your lab running” with similiar mechanisms are being found in many research areas. Best of all – declare everybody as diseased (or at least at risk) like seen Continue reading Pandemy of vitamin D deficiency

Funny? Laughable? Ridiculous?

www.cell.com/current-biology shows humour

Human emotional expressions, such as laughter, are argued to have their origins in ancestral nonhuman primate displays. To test this hypothesis, the current work examined the acoustics of tickle-induced vocalizations from infant and juvenile orangutans, gorillas, chimpanzees, and bonobos, as well as tickle-induced laughter produced by human infants.

Clash between our genes & environment

Thenew book by Gibson “It Takes a Genome: How a Clash Between Our Genes and Modern Life Is Making Us Sick” raises some interesting points (from the Amazon review)

Our genome is out of equilibrium, both with itself and its environment. Simply put, our genes aren’t coping well with modern culture. Continue reading Clash between our genes & environment

Ghost in your genes

was an earlier title of a BBC documentation about gene methylation. While running today an analysis of segregating methylation marks, I have major difficulties to find out the status of the human epigenome map. The Sanger site seems to be down for a long time, there aren’t any updates of the AHEAD consortium, the site of the Epigenetics Society is largely uniformative, methDB gives me “information about the research situation in France and why French scientists are in conflict with the current government”, an EU network excellence has only a fashionable website while another EU project is even not fashionable. Or do I miss something??

Neverending story – vitamin D in pregnancy

screenshot1A new study of 5 year old children relates their current allergy symptoms to LOW maternal intake of vitamin D from food (which is strange within the context of current cohort studies that show a INCREASED risk by vitamin D supplement use).

As this is a diabetes study, the sample is highly biased Continue reading Neverending story – vitamin D in pregnancy

Stagnancy at terrific speed or the impact of impact

Besides another critical review of the impact game this month in LJ, I found a ever more devastating paper at the University of Konstanzclick for the Babelfish translation. Continue reading Stagnancy at terrific speed or the impact of impact

What is the best logistic model?

I have never heard a formal lecture answering this question even after many years in epidemiology. It should be parsimonious of course to avoid too many missings but seems largely a subjective approach to keep or drop a variable. It was therefore quite helpful to find now an online lecture that exemplifies a sound approach – check out unc.edu/courses/2006spring. I already used anova to compare models (at least since my move from SAS to R) while using AIC is something that I am adding now to my toolbox. Continue reading What is the best logistic model?

Mac OS X running Sigmaplot

screenshotI haven’t found any replacement yet for Sigmaplot that is offered only as a native Windows application. Even buying a copy of Aabel didn’t bring me back the fast and intuitive plotting capabilities. Running Sigmaplot under Parallels is a pain using too much of the system ressources while Crossover failed to start up even after following these step-by-step instructions. Finally, with Crossover 8, it seems that a win98 bottle can run Sigmaplot 9!

Quick Powerpoint preview on Mac OS X

Macosxhints provides a nice solution that I have only slightly edited here

 1:
 2:
 3:
 4:
 5:
 6:
 7:
 8:
 9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
40:
41:
43:
1. Navigate to /System » Library » QuickLook » Office.qlgenerator. Control-click on the generator and pick Show Package Contents from the pop-up menu. Then navigate to Contents.
2. Create a copy of info.plist to use as a backup.
3. Change write permission of info.plist
4. Open info.plist with TextEdit or your favorite text editor.
5. Scroll down to find the following text:
      <real>800</real>
        <key>QLSupportsConcurrentRequests</key>
        <true/>
        <key>QLThumbnailMinimumSize</key>
        <real>17</real>
      </dict>
      </plist>
6. Replace all of that with this:
      <real>800</real>
        <key>QLSupportsConcurrentRequests</key>
        <true/>
        <key>QLThumbnailMinimumSize</key>
        <real>17</real>
              <key>UTImportedTypeDeclarations</key>
        <array>
          <dict>
            <key>UTTypeConformsTo</key>
            <array>
              <string>com.microsoft.powerpoint.ppt</string>
            </array>
            <key>UTTypeDescription</key>
            <string>Full screen PPT file</string>
            <key>UTTypeIdentifier</key>
            <string>com.microsoft.powerpoint.ppt</string>
            <key>UTTypeTagSpecification</key>
            <dict>
              <key>public.filename-extension</key>
              <array>
                <string>pps</string>
              </array>
            </dict>
          </dict>
        </array>
      </dict>
      </plist>
7. Save the new plist file and quit the editor.
8. Navigate to your user's Library » Preferences folder, and trash com.apple.QuickLookDaemon.plist.

et voilà

screenshot

Fat receptor leading to obesity?

I have recently argued that much of the”obesity epidemic (which even expands now due to the economic crisis) is being due to processed food that fools our sensory system. A new paper (doi:10.1089/omi.2008.0031) now gives me some more support

Taste perception plays a key role in determining individual food preferences and dietary habits. Individual differences in bitter, sweet, umami, sour, or salty taste perception may influence dietary habits, affecting nutritional status and nutrition-related chronic disease risk. In addition to these traditional taste modalities there is growing evidence that “fat taste” may represent a sixth modality. Continue reading Fat receptor leading to obesity?