Background: Tarantula cubensis (theranekron), obtained from the poison of Cuban Tarantula, is a homeopathic drug frequently used in animal health. Objectives: The effect theranekron on reproductive parameters male animals unknown. In this study, was investigated. Methods: Three different groups rats were created: control (n=8) (no application), I (subcuteneous injection 0.3 mg/kg days 0, 5, and...

Molecular dynamics simulations of smooth and striated muscle myosin regulatory light chain (RLC) N-terminal extension (NTE) showed that diphosphorylation induces a disorder-to-order transition. Our goal here was to further explore the effects of mono- and diphosphorylation on the straightening and rigidification of the tarantula myosin RLC NTE. For that we used MD simulations followed by persis...

Phylogenetic threats such as spiders evoke our deepest primitive fears. When close or looming, such threats engage evolutionarily conserved monitoring systems and defense reactions that promote self-preservation. With the use of a modified behavioral approach task within functional MRI, we show that, as a tarantula was placed closer to a subject's foot, increased experiences of fear coincided w...

Although all species of the Brachypelma genus are protected under CITES, few studies have been performed on the genetic structure of the populations of these endangered tarantulas. Here we propose, for the first time in spiders, to use ISSR (Inter Simple Sequence Repeat) technique to study the genetic variability of Mexican populations of Brachypelma vagans (Ausserer 1875). We used a nonlethal ...

R 144 is the visually brightest WR star in Large Magellanic Cloud (LMC). was reported to be a binary, making it potentially most massive binary thus observed. We perform comprehensive spectral, photometric, orbital, and polarimetric analysis of 144. an eccentric (e=0.51) 74.2-d comprising two relatively evolved (age~2 Myr), H-rich stars. The hotter primary (WN5/6h, T=50 kK) cooler secondary (WN...

Despite the well-documented gender effect in anxiety, less is known about contributing factors to women's greater risk for anxiety and fears. The present study examined the relationship between gender, gender role orientation (i.e., expressivity/instrumentality) and fear of harmless insects (tarantula), using a multimodal approach of self-report measures, a Behavioral Approach Test (BAT), and p...