scholarly journals Dynamic observation of 5‑fluorouracil‑induced myocardial injury and mitochondrial autophagy in aging rats

2021 ◽  
Vol 22 (6) ◽  
Author(s):  
Yuanyang Li ◽  
Yufan Zhang ◽  
Xiangzhong Zhou ◽  
Xianghong Lei ◽  
Xinhang Li ◽  
...  
Keyword(s):  
Myocardial Injury ◽  
Aging Rats ◽  
Dynamic Observation

Electron Microscopic Study of the Epithelium of the Seminal Vesicle of Aging Rats

1974 ◽  
Vol 32 ◽  
pp. 138-139
Author(s):  
V. F. Allison ◽  
G. C. Fink ◽  
G. W. Cearley
Keyword(s):  
Cell Growth ◽  
Epithelial Cell ◽  
Epithelial Cells ◽  
Seminal Vesicle ◽  
Seminal Vesicles ◽  
Epithelial Layer ◽  
Epithelial Hyperplasia ◽  
Electron Microscopic ◽  
Aging Rats ◽  
Pseudostratified Epithelium

It is well known that epithelial hyperplasia (benign hypertrophy) is common in the aging prostate of dogs and man. In contrast, little evidence is available for abnormal epithelial cell growth in seminal vesicles of aging animals. Recently, enlarged seminal vesicles were reported in senescent mice, however, that enlargement resulted from increased storage of secretion in the lumen and occurred concomitant to epithelial hypoplasia in that species.The present study is concerned with electron microscopic observations of changes occurring in the pseudostratified epithelium of the seminal vescles of aging rats. Special attention is given to certain non-epithelial cells which have entered the epithelial layer.

Performance and applications of the holography electron microscope

1993 ◽  
Vol 51 ◽  
pp. 1078-1079
Author(s):  
Akira Tonomura
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Phase Measurement ◽  
Electron Holography ◽  
Imaging Method ◽  
High Contrast ◽  
Magnetic Lens ◽  
High Brightness ◽  
Holographic Imaging ◽  
Dynamic Observation

Electron holography is a two-step imaging method. However, the ultimate performance of holographic imaging is mainly determined by the brightness of the electron beam used in the hologram-formation process. In our 350kV holography electron microscope (see Fig. 1), the decrease in the inherently high brightness of field-emitted electrons is minimized by superposing a magnetic lens in the gun, for a resulting value of 2 × 109 A/cm2 sr. This high brightness has lead to the following distinguished features. The minimum spacing (d) of carrier fringes is d = 0.09 Å, thus allowing a reconstructed image with a resolution, at least in principle, as high as 3d=0.3 Å. The precision in phase measurement can be as high as 2π/100, since the position of fringes can be known precisely from a high-contrast hologram formed under highly collimated illumination. Dynamic observation becomes possible because the current density is high.

Genipin, the UCP2 Inhibitor, Depresses Heart Function of Aging Rats

2010 ◽  
Vol 1 (2) ◽  
pp. 95-101
Author(s):  
Yulia V. Goshovska ◽  
Tatiana V. Shimanskaya ◽  
Vadym F. Sagach
Keyword(s):  
Heart Function ◽  
Aging Rats

Dynamic observation of high speed laser-arc combination welding of thick steel plates

1997 ◽  
Author(s):  
Nobuyuki Abe ◽  
Yasushi Kunugita ◽  
Masakazu Hayashi ◽  
Yoshiaki Tsuchitani
Keyword(s):  
High Speed ◽  
Steel Plates ◽  
Dynamic Observation ◽  
Thick Steel

Surgical resection of the sclera is a non-penetrating operation for the treatment of patients with primary open-angle and secondary glaucoma

GlaucomaNews ◽  
2020 ◽  
pp. 62-65
Author(s):  
А.Y. Kazantseva ◽  
◽  
O.A. Rumyantseva ◽  
Keyword(s):  
Surgical Resection ◽  
Primary Open Angle Glaucoma ◽  
Open Angle Glaucoma ◽  
Secondary Glaucoma ◽  
Ophthalmological Examination ◽  
Open Angle ◽  
Visual Functions ◽  
Dynamic Observation ◽  
Uveoscleral Outflow ◽  
Outflow Pathway

Purpose. To evaluate the effectiveness of surgical resection of the sclera in patients with primary open-angle and secondary glaucoma. Materials and methods. The study included 84 patients with POAG and SG stages III-IV and decompensated IOP level (not higher than 32 mm Hg). In order to normalize the increased ophthalmotonus, a non - penetrating operation was performed-surgical resection of the sclera (SRS). The patients underwent complex ophthalmological examination and dynamic observation. Result. In the studied groups of patients after surgical treatment there was a decrease in elevated IOP levels by 33.42%, an improvement in the coefficient of ease of outflow and a weakening of the hypotensive regime. Stabilization of visual functions was observed in all patients. Summary. The proposed new SRS technique provides a smooth decrease in IOP, preservation of visual functions and is not accompanied by intra-and postoperative complications. Key words: primary open-angle glaucoma, surgical resection of sclera, secondary glaucoma, uveoscleral outflow pathway (USPO), intraocular pressure, EO coefficient .

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