Retinal distribution of Disabled-1 in a diurnal murine rodent, the Nile grass rat Arvicanthis niloticus

2014 ◽  
Vol 125 ◽  
pp. 236-243 ◽  
Author(s):  
Frédéric Gaillard ◽  
Sharee Kuny ◽  
Yves Sauvé
Keyword(s):  
Murine Rodent ◽  
Retinal Distribution ◽  
Arvicanthis Niloticus

Comparison of human and murine isolates of Schistosoma mansoni from Richard-Toll, Senegal, by isoelectric focusing

1997 ◽  
Vol 71 (2) ◽  
pp. 175-181 ◽  
Author(s):  
M. Sène ◽  
P. Brémond ◽  
J.P. Hervé ◽  
V.R. Southgate ◽  
B. Sellin ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Acid Phosphatase ◽  
Lactate Dehydrogenase ◽  
Schistosoma Mansoni ◽  
Isoelectric Focusing ◽  
Glucose Phosphate Isomerase ◽  
Glucose Phosphate ◽  
Enzyme Systems ◽  
Glucose 6 Phosphate Dehydrogenase ◽  
Arvicanthis Niloticus

AbstractStudies on human and murine isolates of Schistosoma mansoni, from Richard-Toll, Senegal, were carried out by isoelectric focusing in polyacrylamide gels. Seven enzyme systems; lactate dehydrogenase (LDH), malate dehydrogenase (MDH), glucose-6-phosphate dehydrogenase (G6PD), acid phosphatase (AcP), hexokinase (HK), glucose phosphate isomerase (GPI), and phosphoglucomutase (PGM), were used to compare the two isolates. All systems tested, apart from LDH, were found to be polymorphic for both isolates. Interestingly, one phenotype is more frequent than the remainder. The results show that there is no significant genetic variation between the S. mansoni isolates from man and the rodents, Arvicanthis niloticus and Mastomys huberti.

Nocturnal and Diurnal Rhythms in the Unstriped Nile Rat,Arvicanthis niloticus

1999 ◽  
Vol 14 (5) ◽  
pp. 364-377 ◽  
Author(s):  
J. A. Blanchong ◽  
T. L. McElhinny ◽  
M. M. Mahoney ◽  
L. Smale
Keyword(s):  
Diurnal Rhythms ◽  
Arvicanthis Niloticus

scholarly journals Survey of Animal Fauna in Gohayna District at Sohag Governorate, Egypt

2021 ◽  
pp. 1-2
Author(s):  
Abd El-Aleem S.S. Desoky ◽  
◽  
Mohamed M. Abd-Allah ◽  
Keyword(s):  
Rattus Norvegicus ◽  
Dominant Species ◽  
Effective Strategy ◽  
Future Plan ◽  
Arvicanthis Niloticus

The present work was aimed to identify of animal fauna in Gohayna District, Sohag Governorate, Egypt during 2020/2021 season. The results were revealed the presence of four species of rats included the white bellied rat, Rattus frugivorus the dominant species from, Rattus alexandrines, the Nile grass rat, Arvicanthis niloticus. Rattus norvegicus and Gerbillus sp. Also, found that Mustela sp., and long-eared hedgehog, Hemiechinus auritus. These results to be used in the development of a future plan in effective strategy for implementation of animal pests management programs in cultivated in Sohag Governorate.

Morphological evolution of the murine rodent Paraethomys in response to climatic variations (Mio-Pleistocene of North Africa)

Paleobiology ◽  
1999 ◽  
Vol 25 (3) ◽  
pp. 369-382 ◽  
Author(s):  
Sabrina Renaud ◽  
Mouloud Benammi ◽  
Jean-Jacques Jaeger
Keyword(s):  
North Africa ◽  
Environmental Conditions ◽  
Morphological Evolution ◽  
Middle Pleistocene ◽  
Metabolic Adaptation ◽  
Subsequent Increase ◽  
Evolutionary Patterns ◽  
The North ◽  
Murine Rodent ◽  
Evolutionary Response

The North African murine rodent Paraethomys evolved as an anagenetic lineage from the late Miocene until its extinction in the late—middle Pleistocene. A Fourier analysis of the outlines of the first upper and lower molars of this rodent was used to quantify the evolutionary patterns of this lineage and to compare evolutionary patterns to the climatic record. Morphological evolution and long-term environmental variations are strongly correlated. A change in molar shape, which may be related to the development of a more grass-eating diet, corresponds to the global cooling beginning around 3 Ma and the subsequent increase in aridity in North Africa. Concurrently, size increased, which may be related to increased masticatory efficiency or to metabolic adaptation to the cooler environmental conditions according to Bergmann's rule. This adaptive response to changing environmental conditions corresponds to an acceleration of evolutionary rates in the lineage. The modalities of the evolutionary response in size and shape are probably controlled by intrinsic factors such as different genetic determinisms for both characters.

Eimeria arvicanthi van den Berghe & Chardome 1956 and Eimeria mehlhorni nov.sp, Infecting the Field Rat Arvicanthis niloticus niloticus in Egypt

1991 ◽  
Vol 140 (2-3) ◽  
pp. 185-190 ◽  
Author(s):  
F. Abdel-Ghaffar ◽  
A.-R. Bashtar ◽  
A.M. Mustafa ◽  
A. El-Toukhy
Keyword(s):  
Arvicanthis Niloticus

scholarly journals Ocular Formulation Based on Palmitoylethanolamide-Loaded Nanostructured Lipid Carriers: Technological and Pharmacological Profile

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 287 ◽  
Author(s):  
Carmelo Puglia ◽  
Debora Santonocito ◽  
Carmine Ostacolo ◽  
Eduardo Maria Sommella ◽  
Pietro Campiglia ◽  
...  
Keyword(s):  
Physical Stability ◽  
Topical Administration ◽  
Diabetic Rats ◽  
Nanostructured Lipid Carrier ◽  
The Novel ◽  
Tnf Α ◽  
Mean Size ◽  
Retinal Distribution ◽  
Factor Α ◽  
Ophthalmic Formulation

The present work was aimed for the preparation of a stable nanostructured lipid carrier (NLC) system for the delivery of N-palmitoylethanolamide (PEA) to the back of the eye. PEA is an interesting natural compound showing anti-inflammatory and neuroprotective activities. The limits of PEA (poor solubility and high instability) justify its nanoencapsulation into drug delivery systems. Two different well-known techniques were compared to formulate NLC: the high shear homogenization technique (HSH) and the method based on a combination of HSH technique and ultrasonication (HSH/US). Nanoparticles were evaluated in relation to mean size, homogeneity, surface charge, and physical stability by Turbiscan technology. Retinal distribution of PEA was carried out in a rat eye after single instillation of PEA-NLC ophthalmic formulation. The novel formulation delivered remarkable levels of PEA to the retina. Lastly, topical administration of PEA-NLC ophthalmic formulation was able to significantly inhibits retinal tumor necrosis factor-α (TNF-α) levels in streptozotocin-induced diabetic rats. The present findings suggest that the novel ophthalmic formulation may be useful for the treatment of retinal diseases such as diabetic retinopathy. Clinical studies are in progress to evaluate this possibility.

Sperm morphology of the Rattini – are the interspecific differences due to variation in intensity of intermale sperm competition?

2018 ◽  
Vol 30 (11) ◽  
pp. 1434 ◽  
Author(s):  
Tessa Pahl ◽  
Hanna J. McLennan ◽  
Yun Wang ◽  
Anang S. Achmadi ◽  
Kevin C. Rowe ◽  
...  
Keyword(s):  
Sexual Selection ◽  
Sperm Competition ◽  
Sperm Morphology ◽  
Tail Length ◽  
Sperm Head ◽  
Apical Hook ◽  
Interspecific Differences ◽  
Murine Rodent ◽  
Murine Rodents ◽  
Sperm Size

It is widely accepted that in mammals a causal relationship exists between postcopulatory sexual selection and relative testes mass of the species concerned, but how much it determines sperm size and shape is debatable. Here we detailed for the largest murine rodent tribe, the Rattini, the interspecific differences in relative testes mass and sperm form. We found that residual testes mass correlates with sperm head apical hook length as well as its angle, together with tail length, and that within several lineages a few species have evolved highly divergent sperm morphology with a reduced or absent apical hook and shorter tail. Although most species have a relative testes mass of 1–4%, these derived sperm traits invariably co-occur in species with much smaller relative testes mass. We therefore suggest that high levels of intermale sperm competition maintain a sperm head with a long apical hook and long tail, whereas low levels of intermale sperm competition generally result in divergent sperm heads with a short or non-existent apical hook and shorter tail. We thus conclude that sexual selection is a major selective force in driving sperm head form and tail length in this large tribe of murine rodents.

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