Changes in serum immunoglobulins in subjects with acute myocardial infarct and essential hypertension

20 (12 men and 8 women) acute myocardial infarction (AMI) patients and 17 (14 men and 3 women) patients with arterial hypertension (II degrees stage according to OMS) in comparison to controls age and sex matched, were studied, serum IgA, IgG, IgM were evaluated with radial immunodiffusion and serum IgE with RIA. Ho significant changes ef immunoglobulins were observed between hypertensive patients and controls; whereas a significant increase of IgM, IgG and IgE, with out changes of IgA, were shown in AMI patients. Serum Ig and IgM were significantly augmented in AMI patients in comparison to hypertensive patients.     

Instaneous changes in the radial artery blood flow under different physiological conditions

Using a Doppler pulse flowmeter we measured the blood flow in the radial artery at rest and during physical exercise and various other stimuli (arithmetical calculations, electrical stimulation, deep inspiration). The mean resting flow in the radial artery was 0.66 ml/s. Every stimulus was instantaneously followed by a drop in the blood flow to a minimum value; there was no significant differences between these values. The results demonstrate that the new, non-invasive apparatus can be used to study quick changes in the blood flow not detected by routine non-invasive methods.     

Über Vorkommen silberimprägnierbarer Zellen im Magen-Darmtrakt von Säugetieren

Zusammenfassung Bei normalen Schlachthofsowie Laboratoriumtieren wird das zahlenmäßige Verhalten der argyrophilen und argentaffinen Zellen in Magenfundus und -antrum, Dünn und Dickdarm, sowie deren gegenseitiges Verhältnis festgestellt (s. Tabelle 1 und 2).Argyrophile Zellen sind bei allen untersuchten Tieren in allen Abschnitten des Magen-Darmtraktes zu finden. Argentaffine Zellen sind ebenfalls bei allen Tieren vorhanden, allerdings in einigen Abschnitten spärlich oder ganz fehlend, wie z. B. im Dickdarm.Die Verteilung der beiden Zellarten sowie ihr zahlenmäßiges Verhältnis zueinander weist sehr starke Schwankungen auf, so daß sich keine Gesetzmäßigkeiten feststellen lassen.In wenigen Fällen konnte das Vorkommen rein argentaffiner, d. h. nicht gleichzeitig auch argyrophiler Zellen erwiesen werden.     

The role of humans in the diversification of a threatened island raptor

Background  

Anthropogenic habitat modifications have led to the extinction of many species and have favoured the expansion of others. Nonetheless, the possible role of humans as a diversifying force in vertebrate evolution has rarely been considered, especially for species with long generation times. We examine the influence that humans have had on the colonization and phenotypic and genetic differentiation of an insular population of a long-lived raptor species, the Egyptian vulture (Neophron percnopterus).