1000 resultados para Spurzheim, J. G. (Johann Gaspar), 1776-1832.
Resumo:
During a scientific field expedition to the Alai-Pamir range five specimens of the genus Gloydius have been collected in the larger Alai. A morphological and genetical examination of the specimens has shown that they are part of the G. halys complex, but represent a new taxon which is characterized by the following unique character combination: It is a slender and moderately stout small snake, up to 479 mm total length. The head has nine symmetrical plates on the upper head, 7 supralabial and 8-9 infralabial scales. Body scales in 20-22 rows around midbody, 143-156 ventral and 35-45 usually paired subcaudal scales. The cloacal plate not divided. The general coloration consists of various different tones of olive, tan and brown, having a distinct head, but an indistinct body pattern with, excluding the tail, 26-29 transverse crossbands, which are not extending to the sides of the body. The haplotype network shows the new species within the G. halys complex and close related to both, G. h. halys and G. h. caraganus. So far the new described species is only known from the Alai range. However, various Gloydius specimens are found in Kyrgyzstan and because of the complicated taxonomy those specimens have to re-identified to clarify their status and the status of the new species.
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Soitinnus: Urut
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Soitinnus : Viulu, piano
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Soitinnus: jousiorkesteri, cembalo.
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Soitinnus: viulu, huilut (2), jousiorkesteri.
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Soitinnus: urut.
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Soitinnus: viulu.
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Soitinnus: huilut (2), continuo (cembalo, viola da gamba).
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The aim of the present study was to characterize the interactions of antagonist G (H-Arg-D-Trp-NmePhe-D-Trp-Leu-Met-NH 2)-targeted sterically stabilized liposomes with the human variant small cell lung cancer (SCLC) H82 cell line and to evaluate the antiproliferative activity of encapsulated doxorubicin against this cell line. Variant SCLC tumors are known to be more resistant to chemotherapy than classic SCLC tumors. The cellular association of antagonist G-targeted (radiolabeled) liposomes was 20-30-fold higher than that of non-targeted liposomes. Our data suggest that a maximum of 12,000 antagonist G-targeted liposomes were internalized/cell during 1-h incubation at 37ºC. Confocal microscopy experiments using pyranine-containing liposomes further confirmed that receptor-mediated endocytosis occurred, specifically in the case of targeted liposomes. In any of the previously mentioned experiments, the binding and endocytosis of non-targeted liposomes have revealed to be negligible. The improved cellular association of antagonist G-targeted liposomes, relative to non-targeted liposomes, resulted in an enhanced nuclear delivery (evaluated by fluorimetry) and cytotoxicity of encapsulated doxorubicin for incubation periods as short as 2 h. For an incubation of 2 h, we report IC50 values for targeted and non-targeted liposomes containing doxorubicin of 5.7 ± 3.7 and higher than 200 µM doxorubicin, respectively. Based on the present data, we may infer that receptors for antagonist G were present in H82 tumor cells and could mediate the internalization of antagonist G-targeted liposomes and the intracellular delivery of their content. Antagonist G covalently coupled to liposomal drugs may be promising for the treatment of this aggressive and highly heterogeneous disease.
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Pallonpuoliskot halkaisijaltaan n. 26 cm.
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1928/08 (A62,N8,T95).
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1922/06/15 (A56,T89,N12)-1922/06/30.