scholarly journals A New Approach to Three-dimensional Reconstructed Imaging of Hormone-secreting Cells and Their Microvessel Environments in Rat Pituitary Glands by Confocal Laser Scanning Microscopy

2000 ◽  
Vol 48 (4) ◽  
pp. 569-577 ◽  
Author(s):  
J. Itoh ◽  
K. Kawai ◽  
A. Serizawa ◽  
K. Yasumura ◽  
K. Ogawa ◽  
...  

There has been considerable interest in the relationship between hormone-secreting endocrine cells and their microvessels in human pituitary gland. However, microcirculatory networks have rarely been studied in three dimensions (3D). This study was designed to visualize and to reveal the relationship between hormone-secreting endocrine cells and their microvessel environment in 3D, using rat pituitary glands under various (hyper/hypo) experimental conditions by confocal laser scanning microscopy (CLSM). Female adult Wistar rats were used after bilateral adrenalectomy or ACTH administration for 2 weeks. Clear 3D reconstructed images of ACTH cells, the microvessel network and counterstained nuclei were obtained at a maximal focus depth of 1 mm by CLSM without any background noise. In the hyperfunctional state, slender cytoplasmic processes of hypertrophic stellate ACTH cells frequently extended to the microvessels. In the hypofunctional state, ACTH cells appeared atrophic and round with scanty cytoplasm, and cytoplasmic adhesions to microvessel network patterns were inconspicuous. Therefore, 3D reconstructed imaging by CLSM is a useful technique with which to investigate the microvessel environment of hormone-secreting cells and has the potential to reveal dynamic hormone-secreting pathways.

IAWA Journal ◽  
2007 ◽  
Vol 28 (1) ◽  
pp. 29-37 ◽  
Author(s):  
Hiroki Sakagami ◽  
Junji Matsumura ◽  
Kazuyuki Oda

Confocal laser scanning microscopy (CLSM) was applied as a new method of visualizing the shrinkage of wood and its anisotropy. Control of relative humidity and temperature in a specialized environment chamber made it possible to acquire transverse images of tracheids of Akamatsu (Pinus densiflora) from the saturated condition to the dried condition. The shrinkage of tracheid cells was also determined by measuring the tangential diameter of tracheid and lumen, the radial diameter of tracheid and lumen, and the thickness of tangential and radial walls. Moreover, this technique makes it possible to discuss the relationship between moisture content and tracheid cell shape. We found the CLSM technique to be an effective method for visualizing shrinkage of tracheid cells with desorption.


2020 ◽  
Vol 40 (2) ◽  
pp. 162-171
Author(s):  
Rachata Maneein ◽  
Camille Martinand-Mari ◽  
Julien Claude ◽  
Jirarach Kitana ◽  
Noppadon Kitana

Abstract We investigated the embryological development of Esanthelphusa nani (Naiyanetr, 1984), a common rice-field crab in northern Thailand, using confocal laser scanning microscopy. The development of E. nani can be completed in eggs within 12 d resulting in a hatchling stage corresponding to the megalopa stage. Pre-organogenetic stages were characterized by a superficial cleavage, including egg cleavage, egg blastula, and egg gastrula. Organogenesis stages were identified by the appearances of appendages and was divided into egg nauplius, egg zoea, and egg megalopa. Crabs metamorphose to juveniles after hatching. By providing new comparative data, our study shed some new light on the relationship between environment, phylogeny, and development, opening a potential area of research from the perspective of ecological, evolutionary, and developmental biology.


2012 ◽  
Vol 11 (3) ◽  
pp. 669-674 ◽  
Author(s):  
Szabolcs Szilveszter ◽  
Botond Raduly ◽  
Szilard Bucs ◽  
Beata Abraham ◽  
Szabolcs Lanyi ◽  
...  

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