Archiv der Kategorie: medicine

Höhere Ausbildung schützt vor Alzheimer, aber…

… die Krankheit schreitet dafür rascher voran, wenn sie denn mal voll ausgebrochen ist. Das meldet das „Journal of Neurology, Neurosurgery, and Psychiatry“ (Communiqué bei Eurekalert) auf der Basis einer 5 Jahre dauernden Studie an 312 über 65 Jahre alten New YorkerInnen. Die Hypothese: Besser Ausgebildete haben mehr Nervenverbindungen und mehr Synapsen. Damit könnte ev. das Gehirn länger besser umgehen mit den Verheerungen, die Alzheimer anrichtet. Ab einem gewissen Punkt aber sind die verbleibenden Reserven rascher aufgebraucht…

Werbeanzeigen

Ciba, Hitler, Sandoz, LSD, Glycoramin

1924 entwickelt Ciba Coramin und verkauft es als Kreislaufstimulans. 1938 versucht Albert Hofmann, das Ciba-Erfolgsprodukt Coramin (Nikotinsäure Diäthylamid) nachzubauen für seinen Arbeitgeber Sandoz unter Verwendung von Lysergsäure und stösst dabei auf das Lysergsäurediäthylamid, besser bekannt als LSD. Coramin verkauft sich gut und ist weitherum bekannt; sogar Hitlers Leibarzt Theodor Morell verschreibt es seinem Klienten. Gute 6 Jahrzehnte später ist Coramin, a.k.a. Nikethamid, immer noch in Gebrauch: 125 mg davon sind in Glycoramin zu finden, welches zu Beginn des 21. Jahrhunderts rückläufige Umsatzzahlen aufweist, weshalb Novartis 2006 das Produkt neu positionieren will, was aber etwas schräg rauskommt

Das „chronische déjà vu Syndrom“

Aus der Abteilung „Das kenn ich doch von irgendwo…“

(The Reporter – University of Leeds Newsletter) Many of us have experienced déjà vu – the unsettling sensation of knowing that a situation could not have been experienced, combined with the feeling that it has. It is usually so fleeting that psychologists have until recently thought it impossible to study. But for some people, the feeling of having been there before is a persistent sensation, making every day a ‘Groundhog Day’. Psychologists from Leeds’ memory group are working with sufferers of chronic déjà vu on the world’s first study of the condition.
Dr Chris Moulin first encountered chronic déjà vu sufferers at a memory clinic. “We had a peculiar referral from a man who said there was no point visiting the clinic because he’d already been there, although this would have been impossible.” The patient not only genuinely believed he had met Dr Moulin before, he gave specific details about the times and places of these ‘remembered’ meetings.
Déjà vu has developed to such an extent that he had stopped watching TV – even the news – because it seemed to be a repeat, and even believed he could hear the same bird singing the same song in the same tree every time he went out. Chronic déjà vu sufferers are not only overwhelmed by a sense of familiarity for new experiences, they can provide plausible and complex justifications to support this. “When this particular patient’s wife asked what was going to happen next on a TV programme he’d claimed to have already seen, he said ‘how should I know? I have a memory problem!’” Dr Moulin said.

Moulin führt übrigens auch einen Blog.

Impfstoff gegen Vogelgrippevirus H5N1 für Hühner und Mäuse

(eurekalert) University of Pittsburgh researchers announced they have genetically engineered an avian flu vaccine from the critical components of the deadly H5N1 virus that completely protected mice and chickens from infection. Avian flu has devastated bird populations in Southeast Asia and Europe and so far has killed more than 80 people. Because this vaccine contains a live virus, it may be more immune-activating than avian flu vaccines prepared by traditional methods, say the researchers. Furthermore, because it is grown in cells, it can be produced much more quickly than traditional vaccines, making it an extremely attractive candidate for preventing the spread of the virus in domestic livestock populations and, potentially, in humans, according to the study, published in the Feb 15 issue of the Journal of Virology and made available early online. (…) Interestingly, all of the chickens that were immunized subcutaneously survived exposure to H5N1, developed strong HA-specific antibody responses and showed no clinical signs of disease. In contrast, half of the chickens immunized intranasally died and half survived. All of the chickens immunized with the empty vector (intranasally and subcutaneously) died within two days of H5N1 exposure. The researchers are still not yet sure why the subcutaneous delivery is more effective than the intranasal delivery of the vaccine, but they suggested it may be because the adenovirus vector they used has limited infectivity via the nose and respiratory tract.

Kaiserschnitt und Männer

Wie Männer sich fühlen und benehmen während eines Kaiserschnitts bei der Frau, die ihr gemeinsames Kind am Gebären ist, hat einen Einfluss auf Schmerzempfinden und Wohlbefinden der Mutter.
(University of Bath) Fathers who are anxious during a caesarean operation may increase the pain experienced by the mother after the delivery of their baby, according to new research published in the journal Psychosomatic Medicine. In a study involving 65 women scheduled for an elective caesarean, researchers found that the way their birth partners felt during the operation was related to the woman’s own levels of fear and anxiety about the operation. This increased the amount of pain the woman felt immediately after the operation, which could affect her immediate recovery as well as potentially influence other related factors such as breast feeding and parent-child bonding.

Banknoten und Epidemien

Am Mittwoch um 19 Uhr läuft die Sperrfrist für einen Artikel im kommenden „Nature“ ab, der einen Zusammenhang beschreibt zwischen den geographischen Bewegungen von Banknoten und der Ausbreitung von Epidemien. Aus dem Communiqué: „Die Wissenschaftler entdeckten in den Bewegungsdaten universelle Skalierungsgesetze, die dem menschlichen Reiseverhalten zugrunde liegen.“ Klingt interessant. Werde ich mir erklären lassen.

UPDATE 27.1.: Die Sperrfrist ist abgelaufen. Hier ist die Medienmitteilung.