摘要:

The synovial intima from the antebrachiocarpal joint of 4-month-old calves was between 1 and 3 cells in thickness and did not have a basal lamina. Numerous areas of the intimal matrix were in direct contact with the joint lumen. The synovial membrane was comprised mainly of A-type synoviocytes usually located adjacent to the joint lumen. These cells were characterized by numerous filopodia (or lamellipodia), large, empty-appearing vacuoles, numerous lysosomes, large vacuoles containing granular material separated from the vacuolar membrane by a radiolucent band, and coated micropinocytotic vesicles. Smooth micropinocytotic vesicles were seen only rarely in these cells. In contrast, B-type cells had few filopodia, numerous smooth micropinocytotic vesicles, few coated micropinocytotic vesicles, a well-developed Golgi apparatus and rough endoplasmic reticulum, mitochondria that were longer and had a denser matrix than that of A cell mitochondria, and surprisingly, only few maturing or fully formed secretory granules. A distinct intermediate (C or AB) type synoviocyte could not be unequivocally identified. Desmosome-like structures were present between synoviocytes, although it was considered questionable if these were true intercellular junctions. No other junctions were present.

ISSN:1422-6405    

DOI:10.1159/000146646

出版商:S. Karger AG    

年代:1988

数据来源: Karger

摘要:

The appearance of intranuclear crystalloid formations in tendon fibroblasts is described during enhanced protein synthesis. The enhanced protein synthesis was induced by an anabolic steroid hormone. One type of these crystalloids consists of closely packed bundles of filaments, 8–10 mm in diameter arranged in parallel.The other type of intranuclear crystalloids possesses an architecture similar to honeycomb pattern. Both of these paracrystalloid nuclear inclusions seem to be an indicator for an extremely enhanced protein synthesis in these cells after the administration of anabolic steroid hormones.Their numerous descriptions in the literature on hypertrophic or precancerously modified tissues and their increased occurrence under pathological influences both point to this explanation. In this way we now possess for the first time a model for experimentation on intranuclear crystalloids of tendon fibroblast

ISSN:1422-6405    

DOI:10.1159/000146647

出版商:S. Karger AG    

年代:1988

数据来源: Karger

摘要:

Excess formaldehyde was extracted from embalmed animal cadavers by vascular perfusion or combined perfusion and percolation with 20% ethanol. The perfusion was undertaken through a carotid artery and the percolation through the serous body cavities for 1–2 h. Nineteen goats were perfused once and one goat and three cows were perfused and percolated twice a day for 3 days. The extracted cadavers were stored in 20% ethanol or in a freezer at –20°C.The mean value of the atmospheric concentration of formaldehyde after extraction was 0.27 ± 0.05 mg/m3 for goats and 0.39 ± 0.12 mg/m3 fo

ISSN:1422-6405    

DOI:10.1159/000146648

出版商:S. Karger AG    

年代:1988

数据来源: Karger

摘要:

We studied the ureter of guinea pigs to ascertain whether there are ganglia and ganglion neurons directly associated with this structure. We consistently observed ureteric ganglia and individual neurons in the adventitia of the ureter or very close to it. There were on average 87 neurons per ureter, and they were scattered over the entire length of the tube.

ISSN:1422-6405    

DOI:10.1159/000146649

出版商:S. Karger AG    

年代:1988

数据来源: Karger

摘要:

In 20 dissections of scoliotic cadavers, the changes of the structures in the posterior mediastinum in relation to the spine were found to be as follows. The aorta persistently followed and adhered to the abnormal curves of the spine. The azygos vein and the thoracic duct followed the aorta closely in its changes. The sympathetic trunk and the greater splanchnic nerves likewise followed the changes in the curvature of the scoliotic spine, but they were often disturbed in their course by vertebral osteophytes and by hyperostoses due to arthritis of the costovertebral joints. The esophagus preserved its normal straight course, unaffected by the scoliotic curves.

ISSN:1422-6405    

DOI:10.1159/000146650

出版商:S. Karger AG    

年代:1988

数据来源: Karger