Wolfram-silicone implants as effective radiation shielding for ocular brachytherapy: dosimetric features and in vivo animal study on biocompatibility.

Objective: To evaluate wolfram as a photon and beta absorber in the management of uveal melanoma with radiotherapy, examining its potential ocular adverse effects and physiologic tolerance using an in vivo rabbit ocular model.

Methods: A method of manufacturing implants from mixtures of wolfram and silicone was developed. Their shielding effect on the radiation of sources used in ocular brachytherapy was investigated by dosimetric measurement in an eye phantom as well as numerical simulations.

Effects of castration and sterilization on baseline and response levels of cortisol-A case study in male guinea pigs.

An uncontrolled reproduction of animals in human hands should be avoided. To meet this goal, animals are widely castrated, i.e.

cAMP and the Fibrous Sheath Protein CABYR (Ca-Binding Tyrosine-Phosphorylation-Regulated Protein) Is Required for 4D Sperm Movement.

A new life starts with successful fertilization whereby one sperm from a pool of millions fertilizes the oocyte. Sperm motility is one key factor for this selection process, which depends on a coordinated flagellar movement. The flagellar beat cycle is regulated by Ca entry via CatSper, cAMP, Mg, ADP and ATP.

Clinical Development of Sphingosine as Anti-Bacterial Drug: Inhalation of Sphingosine in Mini Pigs has no Adverse Side Effects.

Background/aims: Pulmonary infections with Pseudomonas aeruginosa (P. aeruginosa) or Staphylococcus aureus (S. aureus) are of utmost clinical relevance in patients with cystic fibrosis, chronic obstructive pulmonary disease, after trauma and burn, upon ventilation or in immuno-compromised patients.

Spontaneous Spongiform Brainstem Degeneration in a Young Mouse Lemur () with Conspicuous Behavioral, Motor, Growth, and Ocular Pathologies.

Here we report a case of severe growth retardation and neurologic abnormalities in a female gray mouse lemur (), a small NHP species for which the genomic sequence recently became available. The female lemur we present here died on postnatal day 125. This lemur had impaired development of motor skills and showed severe ataxia and tremors.

A review on ocular findings in mouse lemurs: potential links to age and genetic background.

Mouse lemurs, the world's smallest primates, inhabit forests in Madagascar. They are nocturnal, arboreal and dependent on vision for their everyday lives. In the last decades, the grey mouse lemur became increasingly important for biomedical research, in particular aging research.

Spontaneous listeriosis in grey mouse lemurs (Microcebus murinus), but not in Goodman's mouse lemurs (Microcebus lehilahytsara) of the same colony.

Listeriosis is a zoonotic infection with the gram positive, facultative intracellular bacterium Listeria (L.) monocytogenes. Infections mainly occur in ruminants, but also in other species, including humans.

Photoperiodic regime influences onset of lens opacities in a non-human primate.

Background: Opacities of the lens are typical age-related phenomena which have a high influence on photoreception and consequently circadian rhythm. In mouse lemurs, a small bodied non-human primate, a high incidence (more than 50% when >seven years) of cataracts has been previously described during aging. Previous studies showed that photoperiodically induced accelerated annual rhythms alter some of mouse lemurs' life history traits.

Intraocular pressure in the smallest primate aging model: the gray mouse lemur.

Objective: The aim of this study was to assess the practicability of common tonometers used in veterinary medicine for rapid intraocular pressure (IOP) screening, to calibrate IOP values gained by the tonometers, and to define a reference IOP value for the healthy eye in a new primate model for aging research, the gray mouse lemur.

Studied Animals And Procedures: TonoVet and the TonoPen measurements were calibrated manometrically in healthy enucleated eyes of mouse lemurs euthanized for veterinary reasons. For comparison of the practicability of both tonometers as a rapid IOP assessment tool for living mouse lemurs, the IOP of 24 eyes of 12 animals held in the hand was measured.