摘要:

Cholesteatoma epithelium, squamous epithelium not producing cholesteatoma, and granulation tissue specimens, obtained during radical ear surgery, were subjected to total LDH activity as well as isoenzyme analyses. The isoenzyme pattern of the patients’ serum had the normal marked emphasis on LDH1–3 fractions. The tissue specimens all showed a shift of emphasis towards the slowly mobile LDH4–5 fractions. In total LDH activity analysis actively growing granulation tissue was found to show the largest figures, even if the isoenzyme surface percentages were similar to those of epithelial tissues or non-active granula

ISSN:0301-1569    

DOI:10.1159/000274931

出版商:S. Karger AG    

年代:1970

数据来源: Karger

摘要:

Investigations were performed by light microscope on the surface area of the ampulla of the semicircular canal in the guinea pig. Besides the conventional sections, dissected specimens of the ampulla after silver reaction (silver nitrate staining) were used. The surface view of the sensory epithelium of the crista ampullaris was shown by this method. The sensory epithelium of the crista ampullaris was encircled with cylindrical prismatic cells, which made a gradual transition with the supporting cells of the sensory epithelium on one side, but made an abrupt transition with the dark cell area on both the utricular and canalicular sides and formed the plana semilunata on both lateral sides of the ampulla. The free surface of each planum semilunatum cell was smaller near the sensory epithelium becoming larger towards the roof of the ampulla. The roof cells of the ampulla which were continuous with the planum semilunatum cells without any specific border, became smaller towards the midline at the top of the ampullary dome. This midline of smaller cell area extended in both utricular and canalicular directions.

ISSN:0301-1569    

DOI:10.1159/000274932

出版商:S. Karger AG    

年代:1970

数据来源: Karger

摘要:

The authors studied the effect on microphone potentials of one-minute mechanical manipulation of the conductive apparatus without damage to the stapes and opening of the vestibulum in guinea pigs. A decrease in microphone potentials with a subsequent slow restitution to the initial values was observed. The results of the mechanical manipulation were compared with the effect of white noise, intensity 120 dB. After one-minute manipulation, the decrease in the amplitude of microphone potentials and their restitution simulate the course of changes in microphone potentials after 5-minute deafening with white noise.

ISSN:0301-1569    

DOI:10.1159/000274933

出版商:S. Karger AG    

年代:1970

数据来源: Karger

摘要:

Cholinesterase activity of the human nasal mucosa was demonstrated with a histochemical technique according to Karnovsky and Roots. Rich cholinergic innervation was observed around the arteries and arterioles and a few cholinesterase-positive fibers were detected around the veins. Both serous and mucous glands were encapsulated by many nerve fibers presenting intense cholinesterase activity. The duct of the gland and the epithelial layer failed to show cholinesterase activity. The author’s conclusion is that these positive nerve fibers were peripheral parasympathetic nerve fibers which possibly play a major role in stimulating the secretion of the nasal glands and the dilatation of the blood vessel

ISSN:0301-1569    

DOI:10.1159/000274934

出版商:S. Karger AG    

年代:1970

数据来源: Karger

ISSN:0301-1569    

DOI:10.1159/000274935

出版商:S. Karger AG    

年代:1970

数据来源: Karger

ISSN:0301-1569    

DOI:10.1159/000274936

出版商:S. Karger AG    

年代:1970

数据来源: Karger