Enhanced Epileptogenic Susceptibility in a Genetic Model of Reactive Synaptogenesis: The Spastic Han-Wistar Rat

2002 ◽  
Vol 24 (4) ◽  
pp. 262-271 ◽  
Author(s):  
Carlos Cepeda ◽  
Cynthia A. Crawford ◽  
Jody E. Margulies ◽  
Joseph B. Watson ◽  
Michael S. Levine ◽  
...  
Keyword(s):  
Genetic Model ◽  
Wistar Rat ◽  
Reactive Synaptogenesis

Surface epithelial ultrastructure of the polycystic ovary in the BB wistar rat

1986 ◽  
Vol 44 ◽  
pp. 252-253
Author(s):  
R. C. Kaufmann ◽  
F. K. Khosho ◽  
K. S. Amankwah
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Wistar Rats ◽  
Polycystic Ovary ◽  
Wistar Rat ◽  
Polycystic Ovaries ◽  
Chemical Diabetes ◽  
Scanning Electron

Diabetes decreases the fertility of females, but the mechanisms are not completely understood. In our investigations, we have found that 13% of the female BB Wistar rats that spontaneously developed chemical diabetes had persistent estrous. In this study the ovaries of these rats were examined by scanning electron microscopy(SEM) and compared to normal-cycling controls as well as to rats that had developed polycystic ovaries(PCO) by exposure to constant 1ight.

Ultrastructural and immunocytochemical studies of the rat hypothalamo-neurohypophysial system processed by rapid freezing and freeze-substitution fixation

1990 ◽  
Vol 48 (3) ◽  
pp. 884-885
Author(s):  
Seiji Shioda ◽  
Yasumitsu Nakai ◽  
Atsushi Ichikawa ◽  
Hidehiko Ochiai ◽  
Nobuko Naito
Keyword(s):  
Osmium Tetroxide ◽  
Freeze Substitution ◽  
Ultrastructural Localization ◽  
Wistar Rat ◽  
Neurosecretory Cells ◽  
Rapid Freezing ◽  
Sodium Metaperiodate ◽  
Tissue Sections ◽  
Ultrathin Sections ◽  
Electron Microscopes

The ultrastructure of neurosecretory cells and glia cells in the supraoptic nucleus (SON) of the hypothalamus and the neurohypophysis (PN) was studied after rapid freezing followed by substituion fixation. Also, the ultrastructural localization of vasopressin (VP) or its carrier protein neurophys in II (NPII) in the SON and PN was demonstrated by using a post-embedding immunoco1loidal gold staining method on the tissue sections processed by rapid freezing and freeze-substitution fixation.Adult male Wistar rat hypothalamus and pituitary gland were quenched by smashing against a copper block surface precooled with liquid helium and freeze-substituted in 3% osmium tetroxide-acetone solutions kept at -80°C for 36-48h. After substituion fixation, the tissue blocks were warmed up to room temperature, washed in acetone and then embedded in an Epon-Araldite mixture. Ultrathin sections mounted on 200 mesh nickel grids were immersed in saturated sodium metaperiodate and then incubated in each of the following solutions: 1 % egg albumin in phosphate buffer, VP or NPII (1/1000-1/5000) antiserum 24h at 4°C, 3) colloidal gold solution (1/20) 1h at 20°C. The sections were washed with distilled waterand dried, then stained with uranylacetate and lead citrate and examined with Hitachi HU-12A and H-800 electron microscopes.

Evaluation of the biochemical and anti-snake venom effects of Calliandra portoricensis extract fractions in wistar rat models

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
PE Ebong ◽  
HP Onyeama ◽  
MU Eteng ◽  
GO Igile ◽  
GE Egbung
Keyword(s):  
Snake Venom ◽  
Wistar Rat ◽  
Rat Models

Reversible impairment of glucose-induced insulin secretion in SHR/N-cp rats. Genetic model of type II diabetes

Diabetes ◽  
1988 ◽  
Vol 37 (4) ◽  
pp. 398-404 ◽  
Author(s):  
N. R. Voyles ◽  
A. M. Powell ◽  
K. I. Timmers ◽  
S. D. Wilkins ◽  
S. J. Bhathena ◽  
...  
Keyword(s):  
Insulin Secretion ◽  
Type Ii Diabetes ◽  
Genetic Model ◽  
Type Ii

GEJLOGICAL GENETIC MODEL OF TORCHYNSKE APATITE-ILMENITE DEPOSIT (KOROSTEN PLUTON)

2016 ◽  
Vol 9 (0) ◽  
pp. 167-173
Author(s):  
Olga V. Yaremenko ◽  
Olena O. Remezova ◽  
Mykolay M. Komsky ◽  
Tetiana V. Okholina ◽  
Svitlana P. Vasylenko
Keyword(s):  
Genetic Model
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