| borrelia infection in small mammals in west africa and its relationship with tick occurrence inside burrows. | tick-borne relapsing fever (tbrf) is a zoonotic disease caused by several borrelia species transmitted to humans by ornithodoros tick vectors. in west africa, borrelia crocidurae is a common cause of disease in many rural populations. small mammals act as reservoirs of infection. we report here the results of surveys that investigated the occurrence of b. crocidurae infection in rodents and insectivores from eight countries of west and central africa. animals were identified at the species level ... | 2015 | 26327444 |
| distribution of osmoregulatory peptides and neuronal-glial configuration in the hypothalamic magnocellular nuclei of desert rodents. | the desert rodents psammomys obesus and gerbillus tarabuli live under extreme conditions and overcome food and water shortage by modes of food and fluid intake specific to each species. using immunohistochemistry and electron microscopy, we found that the hypothalamic magnocellular nuclei, and in particular, their vasopressinergic component, is highly and similarly developed in psammomys and gerbillus. in comparison to other rodents, the hypothalamus in both species contains more magnocellular v ... | 2011 | 22123087 |
| seasonal changes in plasma testosterone and cortisol suggest an androgen mediated regulation of the pituitary adrenal axis in the tarabul's gerbil gerbillus tarabuli (thomas, 1902). | in the desert gerbil gerbillus tarabuli (thomas, 1902), cortisol is the main glucocorticosteroid produced by the adrenal glands. plasma cortisol concentrations show highest values when testosterone is reduced and lowest values during the breeding season which occurs from early winter to late spring. in order to specify the implication of testicular androgens in these corticosteroid seasonal variations we investigated the effects induced by gonadectomy performed during the breeding season on the ... | 2017 | 28811197 |
| the light/dark cycle disruption affects hepatic function both in metabolic parameters and tissue structure in a nocturnal desert rodent: gerbillus tarabuli. | biological rhythms, such as light/dark (ld) cycles, are an integral component of virtually all aspects of life. these rhythms are controlled in large part by circadian clocks, allowing the organism to adapt its internal rhythmic metabolism to changes in the external environment created by daily fluctuations in the ld cycle. therefore, changes in the daily duration of the lighting could lead to adverse health consequences. the aim of the study was to investigate, in a nocturnal desert rodent, ger ... | 2020 | 32960973 |
| anatomical, histological and biochemical studies of desert rodent gerbillus tarabuli (thomas, 1902) kidney. | the present work aimed to study the anatomy, histology, cytology and some biochemical parameters (urea, osmolality, haematocrit, serum natrium, serum kalium) of the kidney of gerbillus tarabuli. the investigated animals (n = 16) were collected from the desert, weighed and transferred alive to the laboratory in separate cages. a blood sample was taken by puncture at the retro-orbital sinus of each animal using a pasteur-type capillary pipette capillary. they were anaesthetized with urethane injec ... | 2020 | 32363629 |
| high-carbohydrate diet-induced metabolic disorders in gerbillus tarabuli (a new model of non-alcoholic fatty-liver disease). protective effects of 20-hydroxyecdysone. | the aim of our study was to reveal the effects of long-term consumption of a high-carbohydrate diet (hcd) on metabolic dysfunctions and histopathological liver alterations in gerbillus tarabuli, as well as to assess the preventive effects of 20-hydroxyecdysone (20e) in the same animals. contrary to control diet, hcd induces several metabolic disorders including increased adiposity, dyslipidemia, ectopic fat deposition in the liver, associated with higher levels of plasma ast and alt. these gerbi ... | 2019 | 31190566 |
| immunolocalization of rfamide-related peptide 3 in a desert rodent gerbillus tarabuli during seminiferous epithelium cycle. | gerbillus tarabuli is a nocturnal seasonal breeder desert rodent with a main breeding season in spring and summer, and sexual quiescence in winter. this species is an interesting model for studying testis function in rodents. therefore, the present study was performed firstly to investigate the stages of seminiferous epithelium cycle of gerbillus tarabuli with a histological, morphometric and statistical study. and secondly to investigate the expression and possible variations in cellular distri ... | 2018 | 30503055 |
| implication of regional brain serotonergic neurons in dorsal and median raphé nuclei in adaptation to water lacking in gerbillus tarabuli. | the objective of this work was to investigate the implication of serotonin (5-ht) produced in the dorsal and medial raphé nuclei (drn and mrn) in water homeostasis in desert animal gerbillus tarabuli. for that, we measured the density of 5-ht immunolabeled neurons in hydrated and dehydrated animals (over 1 and six months). in this work, 5-ht positive neurons showed some change in shape and colour intensity in dehydrated gerbils comparing with hydrated gerbils. furthermore a differential increase ... | 2018 | 29530792 |
| effect of a water-rich diet on adrenal zona glomerulosa in gerbillus tarabuli. | the objective of this work is to evaluate the aldosterone level and to study the gerbil adrenal zona glomerulosa morphology in the presence of an important water diet content during seven days. thirty adult gerbils, gerbilus tarabuli, were randomly assigned to two watering regimes, with fifteen gerbils per group. the first group was the control and the second group was exposed to a water-rich diet during seven days. thin sections of the adrenal glands were observed in photonic and electron micro ... | 2012 | 22325562 |
| light and electron microscopic studies of the gerbillus tarabuli (thomas, 1902) harderian gland. | the purpose of this investigation was to study the morphological aspects of the harderian gland in gerbillus tarabuli. tissues were obtained from both male and female adult gerbillus tarabuli and processed for light and electron microscopy. the harderian gland in gerbil is large and well developed, covered by a thin capsule, from which thin septae extend, subdividing the gland into lobes and lobules. the endpieces of the gland are tubuloalveolar, which produce a secretion of lipid character. the ... | 2013 | 23317366 |
| seasonal morphophysiological variations in the prostatic complex of the tarabul's gerbil (gerbillus tarabuli). | gerbillus tarabuli is a nocturnal saharan rodent which has an annual reproductive cycle characterized by the reproductive activity in spring and a long phase of sexual quiescence in other seasons. we describe the morphology and hormonal regulation of the prostatic complex of this rodent in the two periods, based on anatomical, histological, morphometric, and immunohistochemical analyses. the organisation of this prostatic complex is similar to that reported for meriones unguiculatus, but differe ... | 2017 | 28162243 |