6‐shogaol improves behavior and memory in Wistar rats prenatally exposed to lipopolysaccharide

2021 ◽  
Author(s):  
Naiana Rosa ◽  
Fabiana Durante Medeiros ◽  
Juliana Oliveira ◽  
Ana Olívia Martins Laurentino ◽  
Eduardo Medeiros Peretti ◽  
...  
Keyword(s):  
Wistar Rats ◽  
Prenatally Exposed

scholarly journals Histological Changes of Wistar Rats' Hippocampus and Entorhinal Cortex After Prenatal Exposure to Mosquito Coil Smoke

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Shehu K ◽  
Sirajo MU ◽  
Saleh MS
Keyword(s):  
Entorhinal Cortex ◽  
Prenatal Exposure ◽  
Wistar Rats ◽  
Structural Integrity ◽  
Neuronal Degeneration ◽  
Prenatally Exposed ◽  
Mosquito Coil ◽  
Histological Changes ◽  
Group I ◽  
Women And Children

Background: The structural integrity of the hippocampus and the entorhinal cortex appears to be a prerequisite for normal acquisition of information about relational and contextual representation. Increased exposures to pyrethroids by pregnant women and children have raised concerns over their potentials as developmental neurotoxicants. Objectives: We studied the histological changes on the hippocampus and entorhinal cortex of adolescent Wistar rats prenatally exposed to mosquito coil smoke (MCS). Methods: 30 adult Wistar rats (20 females, 10 males) were used for the study. Mating was induced, and pregnancy was confirmed. Pregnant animals were grouped into four, 3 animals per group. Group I was exposed to fresh air. Groups II, III, and IV were exposed to mosquito coil smoke for 4, 6 and 8 hours daily respectively throughout gestation period. On Post-natal day (PND) 29, experimental animals were humanely sacrificed and regions of the hippocampus and entorhinal cortex were processed for histological studies using H & E stain. Results and Conclusion: Our results showed that prenatal exposure to mosquito coil smoke caused neuronal degeneration, distortion in cytoarchitecture of cellular layers and vacuolations in the hippocampus and entorhinal cortex of prenatally exposed groups.

Effects of ω-3 fatty acids on stereotypical behavior and social interactions in Wistar rats prenatally exposed to lipopolysaccarides

Nutrition ◽  
2017 ◽  
Vol 35 ◽  
pp. 119-127 ◽  
Author(s):  
Jucélia Jeremias Fortunato ◽  
Naiana da Rosa ◽  
Ana Olívia Martins Laurentino ◽  
Marina Goulart ◽  
Camila Michalak ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Social Interactions ◽  
Wistar Rats ◽  
Prenatally Exposed ◽  
Stereotypical Behavior

Neocortical neurodegeneration in young adult Wistar rats prenatally exposed to ethanol

2006 ◽  
Vol 28 (2) ◽  
pp. 229-237 ◽  
Author(s):  
Francis Adelade Fakoya ◽  
Ezekiel Ademola Caxton-Martins
Keyword(s):  
Young Adult ◽  
Wistar Rats ◽  
Prenatally Exposed

scholarly journals Gestational exposure to the cannabinoid WIN 55,212-2 and its effect on the innate intestinal immune response

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Rosalía Hernández-Cervantes ◽  
Armando Pérez-Torres ◽  
Óscar Prospéro-García ◽  
Jorge Morales Montor
Keyword(s):  
Immune System ◽  
Wistar Rats ◽  
Trichinella Spiralis ◽  
Intestinal Parasites ◽  
Control Group ◽  
Prenatally Exposed ◽  
Mucus Production ◽  
Gestational Exposure ◽  
Male Wistar Rats ◽  
Marijuana Consumption

AbstractThe consequences of marijuana consumption during pregnancy and its effects on the function of the immune system have been little studied. Marijuana is one of the most consumed recreational drugs among pregnant women, and it is known that gestational exposure to marijuana can have serious effects on the offspring after birth. In this study, we challenged the immune system of Wistar rats by infecting them with the parasitic nematode Trichinella spiralis. A treatment group of these animals was prenatally exposed to the cannabinoid WIN 55,212-2; a control group was not exposed. At 5 days of infection, the treated animals were less effective in eliminating intestinal parasites; moreover, this effect was correlated with a deficiency in mucus production, lower recruitment of eosinophils in the duodenum, and a reduced percentage of Tγδ and NK cells. In conclusion, the gestational administration of the synthetic cannabinoid WIN 55,212-2 induces lasting changes to the function of the immune system against infection with T. spiralis in male Wistar rats, making them more susceptible to infection.

Ultrastructural Investigation of Spontaneous Pituitary Adenomas in Aging Sprague-Dawley Rats

1982 ◽  
Vol 40 ◽  
pp. 216-217
Author(s):  
D. J. McComb ◽  
J. Beri ◽  
F. Zak ◽  
K. Kovacs
Keyword(s):  
Microscopic Study ◽  
Pituitary Adenomas ◽  
Wistar Rats ◽  
Microscopic Level ◽  
Sprague Dawley ◽  
Prolactin Cells ◽  
Light Microscopic Level ◽  
Ultrastructural Investigation ◽  
Sprague Dawley Rats ◽  
Long Evans

Investigation of the spontaneous pituitary adenomas in rat have been limited mainly to light microscopic study. Furth et al. (1973) described them as chromophobic, secreting prolactin. Kovacs et al. (1977) in an ul trastructural investigation of adenomas of old female Long-Evans rats, found that they were composed of prolactin cells. Berkvens et al. (1980) using immunocytochemistry at the light microscopic level, demonstrated that some spontaneous tumors of old Wistar rats could contain GH, TSH or ACTH as well as PRL.

Light and electron microscopic investigation of adenohypophyses of germfree, food-restricted, and germfree-food restricted aging, male lobund-wistar rats

1988 ◽  
Vol 46 ◽  
pp. 352-353
Author(s):  
G. Ilse ◽  
K. Kovacs ◽  
N. Ryan ◽  
T. Sano ◽  
L. Stefaneanu ◽  
...  
Keyword(s):  
Wistar Rats ◽  
Microscopic Investigation ◽  
Electron Microscopic Investigation ◽  
Aging Male ◽  
Sprague Dawley ◽  
Electron Microscopic ◽  
Sprague Dawley Rats ◽  
Old Rats ◽  
Ad Libitum ◽  
Microscopic Findings

Germfree state and food restriction have been shown to increase life span and delay tumor occurrence in rats. We report here the histologic, immunocytochemical and electron microscopic findings of adenohypophyses of aging, male Lobund-Wistar rats raised at Lobund Laboratories. In our previous study, the morphologic changes in the adenohypophyses of old rats have been extensively investigated by histology, immunocytochemistry and electron microscopy. Lactotroph adenomas were frequent in Long-Evans and Sprague-Dawley rats, whereas gonadotroph adenomas were frequent in Sprague-Dawley and Wistar rats.Male Lobund-Wistar rats were divided into four groups: 1) conventional, which were raised under normal non-germfree environment and received food ad libitum; 2) germfree-food ad libitum; 3) conventional environment-food restricted and 4) germfree-food restricted. The adenohypophyses were removed from 6-month-, 18-month- and 30-month-old rats. For light microscopy, adenohypophyses were fixed in formalin and embedded in paraffin.

Reversal of cardiomyopathy resulting from prenatal exposure to ethanol

1984 ◽  
Vol 42 ◽  
pp. 716-717
Author(s):  
C. Uphoff ◽  
C. Nyquist-Battie
Keyword(s):  
Prenatal Exposure ◽  
Heart Development ◽  
Membrane Integrity ◽  
Ethanol Exposure ◽  
Prenatal Ethanol Exposure ◽  
Pathological Changes ◽  
Prenatally Exposed ◽  
Inner Mitochondrial Membrane ◽  
Fetal Alcohol ◽  
Newborn Mice

Fetal Alcohol Syndrone (FAS) is a syndrome with characteristic abnormalities resulting from prenatal exposure to ethanol. In many children with FAS syndrome gross pathological changes in the heart are seen with septal defects the most prevalent abnormality recorded. Few studies in animal models have been performed on the effects of ethanol on heart development. In our laboratory, it has been observed that prenatal ethanol exposure of Swiss albino mice results in abnormal cardiac muscle ultrastructure when mice were examined at birth and compared to pairfed and normal controls. Fig. 1 is an example of the changes that are seen in the ethanol-exposed animals. These changes include enlarged mitochondria with loss of inner mitochondrial membrane integrity and loss of myofibrils. Morphometric analysis substantiated the presence of these alterations from normal cardiac ultrastructure. The present work was undertaken to determine if the pathological changes seen in the newborn mice prenatally exposed to ethanol could be reversed with age and abstinence.

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.

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