| the spiny dogfish (squalus cubensis/megalops group): the envenoming of a fisherman, with taxonomic and toxinological comments on the squalus genus. | the authors report a spiny dogfish (squalus cubensis/megalops group) sting of a professional fisherman. he was injured on the left hand by the spine anterior to the fish's dorsal fin and manifested local edema, erythema, and excruciating pain for 6 h. sharks of the genus squalus megalops/cubensis and squalus acanthias are found throughout the world; they have two spines in front of their dorsal fins and channels with a whitish mass containing large vacuolated cells which secrete venom. the squal ... | 2005 | 16323262 |
| vasoactivity and immunoreactivity of fish tachykinins in the vascular system of the spiny dogfish. | tachykinin control of gut blood flow (measured by pulsed doppler technique), dorsal aortic pressure, and heart rate were studied in unrestrained spiny dogfish squalus acanthias injected with the elasmobranch tachykinins scyliorhinin i and ii (scy i and scy ii), the trout tachykinins substance p (sp), and neurokinin a (nka). effects on somatic vasculature were measured by in vitro perfusion of the isolated tail. scy i and trout sp produced hypotension due to a general vasodilation. this caused a ... | 1996 | 8780224 |
| selection of cholera toxin specific ignar single-domain antibodies from a naïve shark library. | shark immunoglobulin new antigen receptor (ignar, also referred to as nar) variable domains (vs) are single-domain antibody (sdab) fragments containing only two hypervariable loop structures forming 3d topologies for a wide range of antigen recognition and binding. their small size ( approximately 12kda) and high solubility, thermostability and binding specificity make ignars an exceptional alternative source of engineered antibodies for sensor applications. here, two new shark nar v display lib ... | 2007 | 17007931 |
| resolution of apical from basolateral membrane of shark rectal gland. | membrane fractions were isolated from the rectal gland of squalus acanthias using differential centrifugation and a sucrose gradient run in the presence of 1 m kbr. using the basolateral membrane marker na+-k+-atpase, we obtained a sixfold purification with the most highly purified fraction from the gradient (sp act = 336 +/- 37 mumol x mg protein-1 x h-1). electrogenic br- transport was used as a marker activity of the apical membrane, which enabled the identification and purification of a memb ... | 1986 | 3022592 |
| [species characteristics of the diurnal periodicity of rest and activity in black sea fish]. | in 6 species of the black sea teleosts differing in habitats and other ecological peculiarities, behavioural and electrophysiological experiments revealed 3 types of the diurnal periodism of motor activity and rest. the first type was most evident in the grey mullet mugil sp., being characterized by the decrease of the level of the activity at night time. in the second type, motor activity was observed at any time; this type of periodism was typical of the dogfish squalus acanthias and the hunch ... | 2006 | 988697 |